Increase version number to 0.3.10

Major blunder. That warrants a new release on its own...

.checkpatch.conf

@@ -67,3 +67,9 @@
 
 # Don't complain when files are modified in 'include/asm'
 --ignore MODIFIED_INCLUDE_ASM
+
+# Don't complain when bools are used in structs
+--ignore BOOL_MEMBER
+
+# Don't complain about initializing statics (this is specific to the kernel)
+--ignore INITIALISED_STATIC

.dockerignore

@@ -0,0 +1,7 @@
+# This file is part of RGBDS.
+#
+# Copyright (c) 2018-2019, Phil Smith and RGBDS contributors.
+#
+# SPDX-License-Identifier: MIT
+.git
+docs

.gitignore

@@ -6,6 +6,6 @@ rgbgfx
 *.exe
 .checkpatch-camelcase.*
 
-test/pokecrystal/*
+test/pokecrystal
-test/pokered/*
+test/pokered
-test/ucity/*
+test/ucity

.travis-checkpatch.sh

@@ -26,9 +26,6 @@ echo "Running checkpatch.pl..."
 fname=$(mktemp)
 rc=0
 
-git remote set-branches --add origin develop
-git fetch
-
 make CHECKPATCH=checkpatchdir/checkpatch.pl checkpatch > $fname
 
 cat $fname

.travis.yml

@@ -2,8 +2,8 @@ language: c
 sudo: required
 install:
   - ./.travis-deps.sh
-  - make
+  - make Q=
-  - sudo make install
+  - sudo make install Q=
 os:
   - linux
   - osx

CONTRIBUTING.rst

@@ -65,9 +65,9 @@ copyright and the reference to the MIT License.
 
 1. Fork this repository.
 
-2. Checkout the ``develop`` branch.
+2. Checkout the ``master`` branch.
 
-3. Create a new branch to work on. You could still work on ``develop``, but it's
+3. Create a new branch to work on. You could still work on ``master``, but it's
    easier that way.
 
 4. Compile your changes with ``make develop`` instead of just ``make``. This
@@ -88,9 +88,9 @@ copyright and the reference to the MIT License.
    code. By default, the Makefile expects the script (and associate files) to be
    located in ``../linux/scripts/``, but you can place them anywhere you like as
    long as you specify it when executing the command:
-   ``CHECKPATCH=../path/to/folder make checkpatch``.
+   ``make checkpatch CHECKPATCH=../path/to/folder``.
 
-8. Create a pull request against the branch ``develop``.
+8. Create a pull request against the branch ``master``.
 
 9. Be prepared to get some comments about your code and to modify it. Tip: Use
-    ``git rebase -i origin/develop`` to modify chains of commits.
+    ``git rebase -i origin/master`` to modify chains of commits.

CONTRIBUTORS.rst

@@ -22,7 +22,7 @@ Main contributors
 Other contributors
 ------------------
 
-- Ben10do
+- Ben Hetherington <dev@ben-h.uk>
 
 - Björn Höhrmann <bjoern@hoehrmann.de>
 
@@ -30,14 +30,22 @@ Other contributors
 
 - David Brotz <dbrotz007@gmail.com>
 
+- Eldred Habert <eldredhabert0@gmail.com>
+
 - The Musl C library <http://www.musl-libc.org>
 
 - obskyr <powpowd@gmail.com>
 
 - The OpenBSD Project <http://www.openbsd.org>
 
+- Quint Guvernator <quint@guvernator.net>
+
 - Sanqui <gsanky@gmail.com>
 
 - YamaArashi <shadow962@live.com>
 
 - yenatch <yenatch@gmail.com>
+
+- phs <phil@philhsmith.com>
+
+- jidoc01 <jidoc01@naver.com>

Dockerfile

@@ -0,0 +1,25 @@
+# This file is part of RGBDS.
+#
+# Copyright (c) 2018-2019, Phil Smith and RGBDS contributors.
+#
+# SPDX-License-Identifier: MIT
+# docker build -t rgbds:vX.X.X-alpine
+FROM alpine:latest
+RUN apk add --update \
+      build-base \
+      byacc \
+      flex \
+      libpng-dev
+COPY . /rgbds
+WORKDIR /rgbds
+RUN make Q='' all
+
+FROM alpine:latest
+RUN apk add --update \
+      libpng
+COPY --from=0 \
+  /rgbds/rgbasm \
+  /rgbds/rgbfix \
+  /rgbds/rgblink \
+  /rgbds/rgbgfx \
+  /bin/

Makefile

@@ -6,6 +6,9 @@
 # SPDX-License-Identifier: MIT
 #
 
+.SUFFIXES:
+.SUFFIXES: .h .l .y .c .o
+
 # User-defined variables
 
 Q		:= @
@@ -33,6 +36,10 @@ CFLAGS		:= -g
 # Non-overridable CFLAGS
 REALCFLAGS	:= ${CFLAGS} ${WARNFLAGS} -std=c99 -D_POSIX_C_SOURCE=200809L \
 		   -Iinclude -DBUILD_VERSION_STRING=\"${VERSION_STRING}\"
+# Overridable LDFLAGS
+LDFLAGS		:=
+# Non-overridable LDFLAGS
+REALLDFLAGS	:= ${LDFLAGS} ${WARNFLAGS}
 
 YFLAGS		:=
 LFLAGS		:= --nounistd
@@ -57,12 +64,12 @@ rgbasm_obj := \
 	src/asm/output.o \
 	src/asm/rpn.o \
 	src/asm/symbol.o \
+	src/asm/util.o \
 	src/extern/err.o \
 	src/extern/utf8decoder.o \
 	src/version.o
 
-src/asm/asmy.h: src/asm/asmy.c
+src/asm/globlex.o src/asm/lexer.o src/asm/constexpr.o: src/asm/asmy.h
-src/asm/locallex.o src/asm/globlex.o src/asm/lexer.o src/asm/constexpr.o: src/asm/asmy.h
 
 rgblink_obj := \
 	src/link/assign.o \
@@ -79,7 +86,6 @@ rgblink_obj := \
 	src/extern/err.o \
 	src/version.o
 
-src/link/parser.h: src/link/parser.c
 src/link/lexer.o: src/link/parser.h
 
 rgbfix_obj := \
@@ -95,27 +101,32 @@ rgbgfx_obj := \
 	src/version.o
 
 rgbasm: ${rgbasm_obj}
-	$Q${CC} ${REALCFLAGS} -o $@ ${rgbasm_obj} -lm
+	$Q${CC} ${REALLDFLAGS} -o $@ ${rgbasm_obj} -lm
 
 rgblink: ${rgblink_obj}
-	$Q${CC} ${REALCFLAGS} -o $@ ${rgblink_obj}
+	$Q${CC} ${REALLDFLAGS} -o $@ ${rgblink_obj}
 
 rgbfix: ${rgbfix_obj}
-	$Q${CC} ${REALCFLAGS} -o $@ ${rgbfix_obj}
+	$Q${CC} ${REALLDFLAGS} -o $@ ${rgbfix_obj}
 
 rgbgfx: ${rgbgfx_obj}
-	$Q${CC} ${REALCFLAGS} ${PNGLDFLAGS} -o $@ ${rgbgfx_obj} ${PNGLDLIBS}
+	$Q${CC} ${REALLDFLAGS} ${PNGLDFLAGS} -o $@ ${rgbgfx_obj} ${PNGLDLIBS}
 
 # Rules to process files
 
+# We want the yacc and lex invocations to pass through our rules
+.y.o:
+.l.o:
+
+# yacc- and lex-generated C files have an accompanying header
+.c.h:
+	$Qtouch $@
+
 .y.c:
 	$Q${YACC} -d ${YFLAGS} -o $@ $<
 
-.l.o:
+.l.c:
-	$Q${RM} $*.c
+	$Q${LEX} ${LFLAGS} -o $@ $<
-	$Q${LEX} ${LFLAGS} -o $*.c $<
-	$Q${CC} ${REALCFLAGS} -c -o $@ $*.c
-	$Q${RM} $*.c
 
 .c.o:
 	$Q${CC} ${REALCFLAGS} ${PNGCFLAGS} -c -o $@ $<
@@ -124,10 +135,11 @@ rgbgfx: ${rgbgfx_obj}
 # for the html documentation.
 
 clean:
-	$Q${RM} rgbasm rgbasm.exe ${rgbasm_obj}
+	$Q${RM} rgbasm rgbasm.exe
-	$Q${RM} rgblink rgblink.exe ${rgblink_obj}
+	$Q${RM} rgblink rgblink.exe
-	$Q${RM} rgbfix rgbfix.exe ${rgbfix_obj}
+	$Q${RM} rgbfix rgbfix.exe
-	$Q${RM} rgbgfx rgbgfx.exe ${rgbgfx_obj}
+	$Q${RM} rgbgfx rgbgfx.exe
+	$Qfind src/ -name "*.o" -exec rm {} \;
 	$Q${RM} src/asm/asmy.c src/asm/asmy.h
 	$Q${RM} src/link/lexer.c src/link/parser.c src/link/parser.h
 
@@ -169,11 +181,11 @@ checkcodebase:
 
 # Target used to check the coding style of the patches from the upstream branch
 # to the HEAD. Runs checkpatch once for each commit between the current HEAD and
-# the first common commit between the HEAD and origin/develop. '.y' and '.l'
+# the first common commit between the HEAD and origin/master. '.y' and '.l'
 # files aren't checked, unfortunately...
 
 checkpatch:
-	$Qeval COMMON_COMMIT=$$(git merge-base HEAD origin/develop);	\
+	$Qeval COMMON_COMMIT=$$(git merge-base HEAD origin/master);	\
 	for commit in `git rev-list $$COMMON_COMMIT..HEAD`; do		\
 		echo "[*] Analyzing commit '$$commit'";			\
 		git format-patch --stdout "$$commit~..$$commit"		\
@@ -202,7 +214,7 @@ wwwman:
 
 develop:
 	$Qenv make -j WARNFLAGS="-Werror -Wall -Wextra -Wpedantic \
-		-Wno-sign-compare -Wchkp -Wformat=2 -Wformat-overflow=2 \
+		-Wno-sign-compare -Wformat=2 -Wformat-overflow=2 \
 		-Wformat-truncation=1 -Wformat-y2k -Wswitch-enum -Wunused \
 		-Wuninitialized -Wunknown-pragmas -Wstrict-overflow=5 \
 		-Wstringop-overflow=4 -Walloc-zero -Wduplicated-cond \

README.rst

@@ -24,13 +24,16 @@ found in this repository.
 1.1 Windows
 ~~~~~~~~~~~
 
-Windows builds are available in the releases page on GitHub:
+Windows builds are available in the releases page on GitHub
+`here <https://github.com/rednex/rgbds/releases>`__.
+
+Extract the zip and then add the executable directory to the path. For example:
 
 ::
 
-    https://github.com/rednex/rgbds/releases
+    path %PATH%;C:\Programs\rgbds-0.3.8-win64\win64
 
-Copy the ``.exe`` files to ``C:\Windows\`` or similar.
+Alternatively, the RGBDS executables can be simply dropped in the folder of the project they're used in.
 
 If you require the latest version in development, it should be possible to
 compile RGBDS with MinGW or Cygwin by following the instructions to build it on

docs/rgbasm.1.html

@@ -1,13 +1,14 @@
 <!DOCTYPE html>
 <html>
+<!-- This is an automatically generated file.  Do not edit.
+   This file is part of RGBDS.
+  
+   Copyright (c) 2010-2019, Anthony J. Bentley and RGBDS contributors.
+  
+   SPDX-License-Identifier: MIT
+   -->
 <head>
   <meta charset="utf-8"/>
-  <style>
-    table.head, table.foot { width: 100%; }
-    td.head-rtitle, td.foot-os { text-align: right; }
-    td.head-vol { text-align: center; }
-    div.Pp { margin: 1ex 0ex; }
-  </style>
   <link rel="stylesheet" href="mandoc.css" type="text/css" media="all"/>
   <title>RGBASM(1)</title>
 </head>
@@ -20,136 +21,122 @@
   </tr>
 </table>
 <div class="manual-text">
-<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgbasm</b> &#x2014; <span class="Nd" title="Nd">Game
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-  Boy assembler</span>
+<code class="Nm">rgbasm</code> &#x2014;
-<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="selflink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<div class="Nd">Game Boy assembler</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
 <table class="Nm">
   <tr>
-    <td><b class="Nm" title="Nm">rgbasm</b></td>
+    <td><code class="Nm">rgbasm</code></td>
-    <td>[<span class="Op"><b class="Fl" title="Fl">-EhLVvw</b></span>]
+    <td>[<code class="Fl">-EhLVvw</code>] [<code class="Fl">-b</code>
-      [<span class="Op"><b class="Fl" title="Fl">-b</b>
+      <var class="Ar">chars</var>] [<code class="Fl">-D</code>
-      <var class="Ar" title="Ar">chars</var></span>]
+      <var class="Ar">name</var>[=<var class="Ar">value</var>]]
-      [<span class="Op"><b class="Fl" title="Fl">-D</b>
+      [<code class="Fl">-g</code> <var class="Ar">chars</var>]
-      <var class="Ar" title="Ar">name</var>[<span class="Op">=<var class="Ar" title="Ar">value</var></span>]</span>]
+      [<code class="Fl">-i</code> <var class="Ar">path</var>]
-      [<span class="Op"><b class="Fl" title="Fl">-g</b>
+      [<code class="Fl">-M</code> <var class="Ar">dependfile</var>]
-      <var class="Ar" title="Ar">chars</var></span>]
+      [<code class="Fl">-o</code> <var class="Ar">outfile</var>]
-      [<span class="Op"><b class="Fl" title="Fl">-i</b>
+      [<code class="Fl">-p</code> <var class="Ar">pad_value</var>]
-      <var class="Ar" title="Ar">path</var></span>]
+      [<code class="Fl">-r</code> <var class="Ar">recursion_depth</var>]
-      [<span class="Op"><b class="Fl" title="Fl">-M</b>
+      <var class="Ar">file</var></td>
-      <var class="Ar" title="Ar">dependfile</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-o</b>
-      <var class="Ar" title="Ar">outfile</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-p</b>
-      <var class="Ar" title="Ar">pad_value</var></span>]
-      <var class="Ar" title="Ar">file</var></td>
   </tr>
 </table>
-<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+</section>
-The <b class="Nm" title="Nm">rgbasm</b> program creates an object file from an
+<section class="Sh">
-  assembly source file. Its arguments are as follows:
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+The <code class="Nm">rgbasm</code> program creates an object file from an
+  assembly source file. The input <var class="Ar">file</var> can be a file path,
+  or <code class="Cm">-</code> denoting <code class="Cm">stdin</code>. Its
+  arguments are as follows:
 <dl class="Bl-tag">
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#b"><code class="Fl" id="b">-b</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">chars</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#b"><b class="Fl" title="Fl" id="b">-b</b></a>
+  <dd>Change the two characters used for binary constants. The defaults are
-    <var class="Ar" title="Ar">chars</var></dt>
+    01.</dd>
-  <dd class="It-tag">Change the two characters used for binary constants. The
+  <dt><a class="permalink" href="#D"><code class="Fl" id="D">-D</code></a>
-      defaults are 01.</dd>
+    <var class="Ar">name</var>[=<var class="Ar">value</var>]</dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Add string symbol to the compiled source code. This is equivalent to
-  <dd class="It-tag">&#x00A0;</dd>
+      <var class="Ar">name</var> <code class="Cm">EQUS</code>
-  <dt class="It-tag"><a class="selflink" href="#D"><b class="Fl" title="Fl" id="D">-D</b></a>
+      &#x201C;<var class="Ar">value</var>&#x201D; in code. If a value is not
-    <var class="Ar" title="Ar">name</var>[<span class="Op">=<var class="Ar" title="Ar">value</var></span>]</dt>
+      specified, a value of 1 is given.</dd>
-  <dd class="It-tag">Add string symbol to the compiled source code. This is
+  <dt><a class="permalink" href="#E"><code class="Fl" id="E">-E</code></a></dt>
-      equivalent to <var class="Ar" title="Ar">name</var>
+  <dd>Export all labels, including unreferenced and local labels.</dd>
-      <b class="Cm" title="Cm">EQUS</b>
+  <dt><a class="permalink" href="#g"><code class="Fl" id="g">-g</code></a>
-      &#x201C;<var class="Ar" title="Ar">value</var>&#x201D; in code. If a value
+    <var class="Ar">chars</var></dt>
-      is not specified, a value of 1 is given.</dd>
+  <dd>Change the four characters used for binary constants. The defaults are
-  <dt class="It-tag">&#x00A0;</dt>
+      0123.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dt><a class="permalink" href="#h"><code class="Fl" id="h">-h</code></a></dt>
-  <dt class="It-tag"><a class="selflink" href="#E"><b class="Fl" title="Fl" id="E">-E</b></a></dt>
+  <dd>By default, <code class="Nm">rgbasm</code> inserts a &#x2018;nop&#x2019;
-  <dd class="It-tag">Export all labels, including unreferenced and local
+      instruction immediately after any &#x2018;halt&#x2019; instruction. The
-    labels.</dd>
+      <code class="Fl">-h</code> option disables this behavior.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#i"><code class="Fl" id="i">-i</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">path</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#g"><b class="Fl" title="Fl" id="g">-g</b></a>
+  <dd>Add an include path.</dd>
-    <var class="Ar" title="Ar">chars</var></dt>
+  <dt><a class="permalink" href="#L"><code class="Fl" id="L">-L</code></a></dt>
-  <dd class="It-tag">Change the four characters used for binary constants. The
+  <dd>Disable the optimization that turns loads of the form <b class="Sy">LD
-      defaults are 0123.</dd>
+      [$FF00+n8],A</b> into the opcode <b class="Sy">LDH [$FF00+n8],A</b> in
-  <dt class="It-tag">&#x00A0;</dt>
+      order to have full control of the result in the final ROM.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dt><a class="permalink" href="#M"><code class="Fl" id="M">-M</code></a>
-  <dt class="It-tag"><a class="selflink" href="#h"><b class="Fl" title="Fl" id="h">-h</b></a></dt>
+    <var class="Ar">dependfile</var></dt>
-  <dd class="It-tag">By default, <b class="Nm" title="Nm">rgbasm</b> inserts a
+  <dd>Print <a class="Xr">make(1)</a> dependencies to
-      &#x2018;nop&#x2019; instruction immediately after any &#x2018;halt&#x2019;
+      <var class="Ar">dependfile</var>.</dd>
-      instruction. The <b class="Fl" title="Fl">-h</b> option disables this
+  <dt><a class="permalink" href="#o"><code class="Fl" id="o">-o</code></a>
-      behavior.</dd>
+    <var class="Ar">outfile</var></dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Write an object file to the given filename.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dt><a class="permalink" href="#p"><code class="Fl" id="p">-p</code></a>
-  <dt class="It-tag"><a class="selflink" href="#i"><b class="Fl" title="Fl" id="i">-i</b></a>
+    <var class="Ar">pad_value</var></dt>
-    <var class="Ar" title="Ar">path</var></dt>
+  <dd>When padding an image, pad with this value. The default is 0x00.</dd>
-  <dd class="It-tag">Add an include path.</dd>
+  <dt><a class="permalink" href="#r"><code class="Fl" id="r">-r</code></a>
-  <dt class="It-tag">&#x00A0;</dt>
+    <var class="Ar">recursion_depth</var></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Specifies the recursion depth at which RGBASM will assume being in an
-  <dt class="It-tag"><a class="selflink" href="#L"><b class="Fl" title="Fl" id="L">-L</b></a></dt>
+      infinite loop.</dd>
-  <dd class="It-tag">Disable the optimization that turns loads of the form
+  <dt><a class="permalink" href="#V"><code class="Fl" id="V">-V</code></a></dt>
-      <b class="Sy" title="Sy">LD [$FF00+n8],A</b> into the opcode
+  <dd>Print the version of the program and exit.</dd>
-      <b class="Sy" title="Sy">LDH [$FF00+n8],A</b> in order to have full
+  <dt><a class="permalink" href="#v"><code class="Fl" id="v">-v</code></a></dt>
-      control of the result in the final ROM.</dd>
+  <dd>Be verbose.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#w"><code class="Fl" id="w">-w</code></a></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Disable warning output.</dd>
-  <dt class="It-tag"><a class="selflink" href="#M"><b class="Fl" title="Fl" id="M">-M</b></a>
-    <var class="Ar" title="Ar">dependfile</var></dt>
-  <dd class="It-tag">Print <a class="Xr" title="Xr">make(1)</a> dependencies to
-      <var class="Ar" title="Ar">dependfile</var>.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#o"><b class="Fl" title="Fl" id="o">-o</b></a>
-    <var class="Ar" title="Ar">outfile</var></dt>
-  <dd class="It-tag">Write an object file to the given filename.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#p"><b class="Fl" title="Fl" id="p">-p</b></a>
-    <var class="Ar" title="Ar">pad_value</var></dt>
-  <dd class="It-tag">When padding an image, pad with this value. The default is
-      0x00.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#V"><b class="Fl" title="Fl" id="V">-V</b></a></dt>
-  <dd class="It-tag">Print the version of the program and exit.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#v"><b class="Fl" title="Fl" id="v">-v</b></a></dt>
-  <dd class="It-tag">Be verbose.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#w"><b class="Fl" title="Fl" id="w">-w</b></a></dt>
-  <dd class="It-tag">Disable warning output.</dd>
 </dl>
-<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="selflink" href="#EXAMPLES">EXAMPLES</a></h1>
+</section>
-Assembling a basic source file is simple:
+<section class="Sh">
-<div class="Pp"></div>
+<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
-<div class="Bd" style="margin-left: 5.00ex;">
+You can assemble a source file in two ways. Straight forward way:
-<pre class="Li">
+<div class="Bd Pp Bd-indent">
+<pre>
 $ rgbasm -o bar.o foo.asm
 </pre>
 </div>
-<div class="Pp"></div>
+<p class="Pp">Pipes way:</p>
-The resulting object file is not yet a usable ROM image &#x2014; it must first
+<div class="Bd Pp Bd-indent">
-  be run through <a class="Xr" title="Xr">rgblink(1)</a> and
+<pre>
-  <a class="Xr" title="Xr">rgbfix(1)</a>.
+$ cat foo.asm | rgbasm -o bar.o -
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
+$ rgbasm -o bar.o - &lt; foo.asm
+</pre>
+</div>
+<p class="Pp">The resulting object file is not yet a usable ROM image &#x2014;
+    it must first be run through <a class="Xr">rgblink(1)</a> and
+    <a class="Xr">rgbfix(1)</a>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
-<a class="Xr" title="Xr">rgbasm(5)</a>, <a class="Xr" title="Xr">rgbfix(1)</a>,
+<a class="Xr">rgbasm(5)</a>, <a class="Xr">rgbfix(1)</a>,
-  <a class="Xr" title="Xr">rgblink(1)</a>,
+  <a class="Xr">rgblink(1)</a>, <a class="Xr">rgbds(5)</a>,
-  <a class="Xr" title="Xr">rgbds(5)</a>, <a class="Xr" title="Xr">rgbds(7)</a>,
+  <a class="Xr">rgbds(7)</a>, <a class="Xr">gbz80(7)</a>
-  <a class="Xr" title="Xr">gbz80(7)</a>
+</section>
-<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgbasm</b> was originally written by Carsten
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-  S&#x00F8;rensen as part of the ASMotor package, and was later packaged in
+<code class="Nm">rgbasm</code> was originally written by Carsten S&#x00F8;rensen
-  RGBDS by Justin Lloyd. It is now maintained by a number of contributors at
+  as part of the ASMotor package, and was later packaged in RGBDS by Justin
-  <a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</div>
+  Lloyd. It is now maintained by a number of contributors at
+  <a class="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.
+</section>
+</div>
 <table class="foot">
   <tr>
-    <td class="foot-date">February 24, 2018</td>
+    <td class="foot-date">July 8, 2019</td>
     <td class="foot-os">RGBDS Manual</td>
   </tr>
 </table>

docs/rgbds.5.html

@@ -1,13 +1,14 @@
 <!DOCTYPE html>
 <html>
+<!-- This is an automatically generated file.  Do not edit.
+   This file is part of RGBDS.
+  
+   Copyright (c) 2017-2018, Antonio Nino Diaz and RGBDS contributors.
+  
+   SPDX-License-Identifier: MIT
+   -->
 <head>
   <meta charset="utf-8"/>
-  <style>
-    table.head, table.foot { width: 100%; }
-    td.head-rtitle, td.foot-os { text-align: right; }
-    td.head-vol { text-align: center; }
-    div.Pp { margin: 1ex 0ex; }
-  </style>
   <link rel="stylesheet" href="mandoc.css" type="text/css" media="all"/>
   <title>RGBDS(5)</title>
 </head>
@@ -20,27 +21,29 @@
   </tr>
 </table>
 <div class="manual-text">
-<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgbds</b> &#x2014; <span class="Nd" title="Nd">object
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-  file format documentation</span>
+<code class="Nm">rgbds</code> &#x2014;
-<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<div class="Nd">object file format documentation</div>
-This is the description of the object files used by
+</section>
-  <a class="Xr" title="Xr">rgbasm(1)</a> and
+<section class="Sh">
-  <a class="Xr" title="Xr">rgblink(1)</a>. Please, note that the specifications
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-  may change. This toolchain is in development and new features may require
+This is the description of the object files used by <a class="Xr">rgbasm(1)</a>
-  adding more information to the current format, or modifying some fields, which
+  and <a class="Xr">rgblink(1)</a>. Please, note that the specifications may
-  would break compatibility with older versions.
+  change. This toolchain is in development and new features may require adding
-<h1 class="Sh" title="Sh" id="FILE_STRUCTURE"><a class="selflink" href="#FILE_STRUCTURE">FILE
+  more information to the current format, or modifying some fields, which would
+  break compatibility with older versions.
+</section>
+<section class="Sh">
+<h1 class="Sh" id="FILE_STRUCTURE"><a class="permalink" href="#FILE_STRUCTURE">FILE
   STRUCTURE</a></h1>
 The following types are used:
-<div class="Pp"></div>
+<p class="Pp"><var class="Ar">LONG</var> is a 32&#x2010;bit integer stored in
-<var class="Ar" title="Ar">LONG</var> is a 32&#x2010;bit integer stored in
+    little&#x2010;endian format (Intel). <var class="Ar">BYTE</var> is an
-  little&#x2010;endian format (Intel). <var class="Ar" title="Ar">BYTE</var> is
+    8&#x2010;bit integer. <var class="Ar">STRING</var> is a 0&#x2010;terminated
-  an 8&#x2010;bit integer. <var class="Ar" title="Ar">STRING</var> is a
+    string of <var class="Ar">BYTE</var>.</p>
-  0&#x2010;terminated string of <var class="Ar" title="Ar">BYTE</var>.
+<div class="Bd Pp">
-<div class="Pp"></div>
+<pre>
-<div class="Bd" style="margin-left: 0.00ex;">
-<pre class="Li">
 ; Header
 
 BYTE    ID[4]            ; &quot;RGB6&quot;
@@ -55,7 +58,7 @@ REPT    NumberOfSymbols   ; Number of symbols defined in this object file.
                           ; as &quot;Scope.Symbol&quot;.
 
     BYTE    Type          ; 0 = LOCAL symbol only used in this file.
-                          ; 1 = IMPORT this symbol from elsewhere (unused). 
+                          ; 1 = IMPORT this symbol from elsewhere
                           ; 2 = EXPORT this symbol to other objects.
 
     IF      Type != 1     ; If symbol is defined in this object file.
@@ -137,7 +140,8 @@ REPT NumberOfSections
 ENDR
 </pre>
 </div>
-<h2 class="Ss" title="Ss" id="RPN_DATA"><a class="selflink" href="#RPN_DATA">RPN
+<section class="Ss">
+<h2 class="Ss" id="RPN_DATA"><a class="permalink" href="#RPN_DATA">RPN
   DATA</a></h2>
 Expressions in the object file are stored as RPN. This is an expression of the
   form &#x201C;2 5 +&#x201D;. This will first push the value &#x201C;2&#x201D;
@@ -146,159 +150,160 @@ Expressions in the object file are stored as RPN. This is an expression of the
   effectively replacing the two top arguments with their sum. In the RGB format,
   RPN expressions are stored as BYTEs with some bytes being special prefixes for
   integers and symbols.
-<table class="Bl-column" style="margin-left: 6.00ex;">
+<table class="Bl-column Bd-indent">
-  <colgroup>
+  <tr>
-    <col style="width: 15.00ex;"/>
+    <td><b class="Sy">Value</b></td>
-    <col style="min-width: 10.00ex;"/>
+    <td><b class="Sy">Meaning</b></td>
-  </colgroup>
-  <tr class="It-column">
-    <td class="It-column"><b class="Sy" title="Sy">Value</b></td>
-    <td class="It-column"><b class="Sy" title="Sy">Meaning</b></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$00"><code class="Li" id="$00">$00</code></a></td>
+    <td><a class="permalink" href="#$00"><code class="Li" id="$00">$00</code></a></td>
-    <td class="It-column"><a class="selflink" href="#+_operator"><code class="Li" id="+_operator">+
+    <td><a class="permalink" href="#+_operator"><code class="Li" id="+_operator">+
       operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$01"><code class="Li" id="$01">$01</code></a></td>
+    <td><a class="permalink" href="#$01"><code class="Li" id="$01">$01</code></a></td>
-    <td class="It-column"><a class="selflink" href="#-_operator"><code class="Li" id="-_operator">-
+    <td><a class="permalink" href="#-_operator"><code class="Li" id="-_operator">-
       operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$02"><code class="Li" id="$02">$02</code></a></td>
+    <td><a class="permalink" href="#$02"><code class="Li" id="$02">$02</code></a></td>
-    <td class="It-column"><a class="selflink" href="#*_operator"><code class="Li" id="*_operator">*
+    <td><a class="permalink" href="#*_operator"><code class="Li" id="*_operator">*
       operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$03"><code class="Li" id="$03">$03</code></a></td>
+    <td><a class="permalink" href="#$03"><code class="Li" id="$03">$03</code></a></td>
-    <td class="It-column"><a class="selflink" href="#/_operator"><code class="Li" id="/_operator">/
+    <td><a class="permalink" href="#/_operator"><code class="Li" id="/_operator">/
       operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$04"><code class="Li" id="$04">$04</code></a></td>
+    <td><a class="permalink" href="#$04"><code class="Li" id="$04">$04</code></a></td>
-    <td class="It-column"><a class="selflink" href="#%_operator"><code class="Li" id="%_operator">%
+    <td><a class="permalink" href="#__operator"><code class="Li" id="__operator">%
       operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$05"><code class="Li" id="$05">$05</code></a></td>
+    <td><a class="permalink" href="#$05"><code class="Li" id="$05">$05</code></a></td>
-    <td class="It-column"><a class="selflink" href="#unary_-"><code class="Li" id="unary_-">unary
+    <td><a class="permalink" href="#unary_-"><code class="Li" id="unary_-">unary
       -</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$10"><code class="Li" id="$10">$10</code></a></td>
+    <td><a class="permalink" href="#$10"><code class="Li" id="$10">$10</code></a></td>
-    <td class="It-column">|
+    <td>|
-      <a class="selflink" href="#operator"><code class="Li" id="operator">operator</code></a></td>
+      <a class="permalink" href="#operator"><code class="Li" id="operator">operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$11"><code class="Li" id="$11">$11</code></a></td>
+    <td><a class="permalink" href="#$11"><code class="Li" id="$11">$11</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&amp;_operator"><code class="Li" id="&amp;_operator">&amp;
+    <td><a class="permalink" href="#&amp;_operator"><code class="Li" id="&amp;_operator">&amp;
       operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$12"><code class="Li" id="$12">$12</code></a></td>
+    <td><a class="permalink" href="#$12"><code class="Li" id="$12">$12</code></a></td>
-    <td class="It-column"><a class="selflink" href="#^_operator"><code class="Li" id="^_operator">^
+    <td><a class="permalink" href="#__operator_2"><code class="Li" id="__operator_2">^
       operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$13"><code class="Li" id="$13">$13</code></a></td>
+    <td><a class="permalink" href="#$13"><code class="Li" id="$13">$13</code></a></td>
-    <td class="It-column"><a class="selflink" href="#unary_~"><code class="Li" id="unary_~">unary
+    <td><a class="permalink" href="#unary_~"><code class="Li" id="unary_~">unary
       ~</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$21"><code class="Li" id="$21">$21</code></a></td>
+    <td><a class="permalink" href="#$21"><code class="Li" id="$21">$21</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&amp;&amp;_comparison"><code class="Li" id="&amp;&amp;_comparison">&amp;&amp;
+    <td><a class="permalink" href="#&amp;&amp;_comparison"><code class="Li" id="&amp;&amp;_comparison">&amp;&amp;
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$22"><code class="Li" id="$22">$22</code></a></td>
+    <td><a class="permalink" href="#$22"><code class="Li" id="$22">$22</code></a></td>
-    <td class="It-column"><a class="selflink" href="#||_comparison"><code class="Li" id="||_comparison">||
+    <td><a class="permalink" href="#___comparison"><code class="Li" id="___comparison">||
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$23"><code class="Li" id="$23">$23</code></a></td>
+    <td><a class="permalink" href="#$23"><code class="Li" id="$23">$23</code></a></td>
-    <td class="It-column"><a class="selflink" href="#unary"><code class="Li" id="unary">unary</code></a>!</td>
+    <td><a class="permalink" href="#unary"><code class="Li" id="unary">unary</code></a>!</td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$30"><code class="Li" id="$30">$30</code></a></td>
+    <td><a class="permalink" href="#$30"><code class="Li" id="$30">$30</code></a></td>
-    <td class="It-column"><a class="selflink" href="#==_comparison"><code class="Li" id="==_comparison">==
+    <td><a class="permalink" href="#==_comparison"><code class="Li" id="==_comparison">==
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$31"><code class="Li" id="$31">$31</code></a></td>
+    <td><a class="permalink" href="#$31"><code class="Li" id="$31">$31</code></a></td>
-    <td class="It-column"><a class="selflink" href="#!=_comparison"><code class="Li" id="!=_comparison">!=
+    <td><a class="permalink" href="#!=_comparison"><code class="Li" id="!=_comparison">!=
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$32"><code class="Li" id="$32">$32</code></a></td>
+    <td><a class="permalink" href="#$32"><code class="Li" id="$32">$32</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&gt;_comparison"><code class="Li" id="&gt;_comparison">&gt;
+    <td><a class="permalink" href="#__comparison"><code class="Li" id="__comparison">&gt;
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$33"><code class="Li" id="$33">$33</code></a></td>
+    <td><a class="permalink" href="#$33"><code class="Li" id="$33">$33</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&lt;_comparison"><code class="Li" id="&lt;_comparison">&lt;
+    <td><a class="permalink" href="#__comparison_2"><code class="Li" id="__comparison_2">&lt;
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$34"><code class="Li" id="$34">$34</code></a></td>
+    <td><a class="permalink" href="#$34"><code class="Li" id="$34">$34</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&gt;=_comparison"><code class="Li" id="&gt;=_comparison">&gt;=
+    <td><a class="permalink" href="#_=_comparison"><code class="Li" id="_=_comparison">&gt;=
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$35"><code class="Li" id="$35">$35</code></a></td>
+    <td><a class="permalink" href="#$35"><code class="Li" id="$35">$35</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&lt;=_comparison"><code class="Li" id="&lt;=_comparison">&lt;=
+    <td><a class="permalink" href="#_=_comparison_2"><code class="Li" id="_=_comparison_2">&lt;=
       comparison</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$40"><code class="Li" id="$40">$40</code></a></td>
+    <td><a class="permalink" href="#$40"><code class="Li" id="$40">$40</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&lt;&lt;_comparison"><code class="Li" id="&lt;&lt;_comparison">&lt;&lt;
+    <td><a class="permalink" href="#___operator"><code class="Li" id="___operator">&lt;&lt;
-      comparison</code></a></td>
+      operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$41"><code class="Li" id="$41">$41</code></a></td>
+    <td><a class="permalink" href="#$41"><code class="Li" id="$41">$41</code></a></td>
-    <td class="It-column"><a class="selflink" href="#&gt;&gt;_comparison"><code class="Li" id="&gt;&gt;_comparison">&gt;&gt;
+    <td><a class="permalink" href="#___operator_2"><code class="Li" id="___operator_2">&gt;&gt;
-      comparison</code></a></td>
+      operator</code></a></td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$50"><code class="Li" id="$50">$50</code></a></td>
+    <td><a class="permalink" href="#$50"><code class="Li" id="$50">$50</code></a></td>
-    <td class="It-column"><a class="selflink" href="#BANK(symbol),"><code class="Li" id="BANK(symbol),">BANK(symbol),</code></a>
+    <td><a class="permalink" href="#BANK(symbol),"><code class="Li" id="BANK(symbol),">BANK(symbol),</code></a>
-      a <var class="Ar" title="Ar">LONG</var> Symbol ID follows.</td>
+      a <var class="Ar">LONG</var> Symbol ID follows.</td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$51"><code class="Li" id="$51">$51</code></a></td>
+    <td><a class="permalink" href="#$51"><code class="Li" id="$51">$51</code></a></td>
-    <td class="It-column"><a class="selflink" href="#BANK(section_name),"><code class="Li" id="BANK(section_name),">BANK(section_name),</code></a>
+    <td><a class="permalink" href="#BANK(section_name),"><code class="Li" id="BANK(section_name),">BANK(section_name),</code></a>
       a null-terminated string follows.</td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$52"><code class="Li" id="$52">$52</code></a></td>
+    <td><a class="permalink" href="#$52"><code class="Li" id="$52">$52</code></a></td>
-    <td class="It-column"><a class="selflink" href="#Current_BANK()"><code class="Li" id="Current_BANK()">Current
+    <td><a class="permalink" href="#Current_BANK()"><code class="Li" id="Current_BANK()">Current
       BANK()</code></a>.</td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$60"><code class="Li" id="$60">$60</code></a></td>
+    <td><a class="permalink" href="#$60"><code class="Li" id="$60">$60</code></a></td>
-    <td class="It-column"><a class="selflink" href="#HRAMCheck."><code class="Li" id="HRAMCheck.">HRAMCheck.</code></a>
+    <td><a class="permalink" href="#HRAMCheck."><code class="Li" id="HRAMCheck.">HRAMCheck.</code></a>
       Check if the value is in HRAM, AND it with 0xFF.</td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$80"><code class="Li" id="$80">$80</code></a></td>
+    <td><a class="permalink" href="#$80"><code class="Li" id="$80">$80</code></a></td>
-    <td class="It-column"><var class="Ar" title="Ar">LONG</var> integer
+    <td><var class="Ar">LONG</var> integer follows.</td>
-      follows.</td>
   </tr>
-  <tr class="It-column">
+  <tr>
-    <td class="It-column"><a class="selflink" href="#$81"><code class="Li" id="$81">$81</code></a></td>
+    <td><a class="permalink" href="#$81"><code class="Li" id="$81">$81</code></a></td>
-    <td class="It-column"><var class="Ar" title="Ar">LONG</var> Symbol ID
+    <td><var class="Ar">LONG</var> Symbol ID follows.</td>
-      follows.</td>
   </tr>
 </table>
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
+</section>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
-<a class="Xr" title="Xr">rgbasm(1)</a>, <a class="Xr" title="Xr">rgblink(1)</a>,
+<a class="Xr">rgbasm(1)</a>, <a class="Xr">rgblink(1)</a>,
-  <a class="Xr" title="Xr">rgbds(7)</a>, <a class="Xr" title="Xr">gbz80(7)</a>
+  <a class="Xr">rgbds(7)</a>, <a class="Xr">gbz80(7)</a>
-<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
+</section>
-<b class="Nm" title="Nm">rgbds</b> was originally written by Carsten
+<section class="Sh">
-  S&#x00F8;rensen as part of the ASMotor package, and was later packaged in
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-  RGBDS by Justin Lloyd. It is now maintained by a number of contributors at
+<code class="Nm">rgbds</code> was originally written by Carsten S&#x00F8;rensen
-  <a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</div>
+  as part of the ASMotor package, and was later packaged in RGBDS by Justin
+  Lloyd. It is now maintained by a number of contributors at
+  <a class="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.
+</section>
+</div>
 <table class="foot">
   <tr>
     <td class="foot-date">January 26, 2018</td>

docs/rgbds.7.html

@@ -1,13 +1,14 @@
 <!DOCTYPE html>
 <html>
+<!-- This is an automatically generated file.  Do not edit.
+   This file is part of RGBDS.
+  
+   Copyright (c) 2010-2018, Anthony J. Bentley and RGBDS contributors.
+  
+   SPDX-License-Identifier: MIT
+   -->
 <head>
   <meta charset="utf-8"/>
-  <style>
-    table.head, table.foot { width: 100%; }
-    td.head-rtitle, td.foot-os { text-align: right; }
-    td.head-vol { text-align: center; }
-    div.Pp { margin: 1ex 0ex; }
-  </style>
   <link rel="stylesheet" href="mandoc.css" type="text/css" media="all"/>
   <title>RGBDS(7)</title>
 </head>
@@ -20,46 +21,52 @@
   </tr>
 </table>
 <div class="manual-text">
-<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgbds</b> &#x2014; <span class="Nd" title="Nd">Rednex
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-  Game Boy Development System</span>
+<code class="Nm">rgbds</code> &#x2014;
-<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="selflink" href="#EXAMPLES">EXAMPLES</a></h1>
+<div class="Nd">Rednex Game Boy Development System</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
 To get a working ROM image from a single assembly source file:
-<div class="Pp"></div>
+<div class="Bd Pp Bd-indent">
-<div class="Bd" style="margin-left: 5.00ex;">
+<pre>
-<pre class="Li">
 $ rgbasm -o bar.o foo.asm
 $ rgblink -o baz.gb bar.o
 $ rgbfix -v -p 0 baz.gb
 </pre>
 </div>
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
-<a class="Xr" title="Xr">rgbasm(1)</a>, <a class="Xr" title="Xr">rgbfix(1)</a>,
+<a class="Xr">rgbasm(1)</a>, <a class="Xr">rgbfix(1)</a>,
-  <a class="Xr" title="Xr">rgblink(1)</a>,
+  <a class="Xr">rgblink(1)</a>, <a class="Xr">rgbds(5)</a>,
-  <a class="Xr" title="Xr">rgbds(5)</a>, <a class="Xr" title="Xr">gbz80(7)</a>
+  <a class="Xr">gbz80(7)</a>
-<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
 <dl class="Bl-ohang">
-  <dt class="It-ohang"></dt>
+  <dt></dt>
-  <dd class="It-ohang">1997, Carsten S&#x00F8;rensen (AKA SurfSmurf) writes
+  <dd>1997, Carsten S&#x00F8;rensen (AKA SurfSmurf) writes ASMotor as a
-      ASMotor as a general-purpose assembler/linker system for DOS/Win32.</dd>
+      general-purpose assembler/linker system for DOS/Win32.</dd>
-  <dt class="It-ohang"></dt>
+  <dt></dt>
-  <dd class="It-ohang">1999, Justin Lloyd (AKA Otaku no Zoku) adapts ASMotor to
+  <dd>1999, Justin Lloyd (AKA Otaku no Zoku) adapts ASMotor to read and produce
-      read and produce GBZ80 assembly/machine code, and releases this version as
+      GBZ80 assembly/machine code, and releases this version as RGBDS.</dd>
-      RGBDS.</dd>
+  <dt></dt>
-  <dt class="It-ohang"></dt>
+  <dd>2009, Vegard Nossum adapts the code to be more UNIX-like and releases this
-  <dd class="It-ohang">2009, Vegard Nossum adapts the code to be more UNIX-like
+      version as rgbds-linux on GitHub.</dd>
-      and releases this version as rgbds-linux on GitHub.</dd>
+  <dt></dt>
-  <dt class="It-ohang"></dt>
+  <dd>2010, Anthony J. Bentley forks that repository. The fork becomes the
-  <dd class="It-ohang">2010, Anthony J. Bentley forks that repository. The fork
+      reference implementation of rgbds.</dd>
-      becomes the reference implementation of rgbds.</dd>
+  <dt></dt>
-  <dt class="It-ohang"></dt>
+  <dd>2017, Bentley's repository is moved to a neutral name. It is now
-  <dd class="It-ohang">2017, Bentley's repository is moved to a neutral name. It
+      maintained by a number of contributors at
-      is now maintained by a number of contributors at
+      <a class="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</dd>
-      <a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</dd>
+  <dt></dt>
-  <dt class="It-ohang"></dt>
+  <dd>2018, codebase relicensed under the MIT license.</dd>
-  <dd class="It-ohang">2018, codebase relicensed under the MIT license.</dd>
 </dl>
+</section>
 </div>
 <table class="foot">
   <tr>

docs/rgbfix.1.html

@@ -1,13 +1,14 @@
 <!DOCTYPE html>
 <html>
+<!-- This is an automatically generated file.  Do not edit.
+   This file is part of RGBDS.
+  
+   Copyright (c) 2010-2017, Anthony J. Bentley and RGBDS contributors.
+  
+   SPDX-License-Identifier: MIT
+   -->
 <head>
   <meta charset="utf-8"/>
-  <style>
-    table.head, table.foot { width: 100%; }
-    td.head-rtitle, td.foot-os { text-align: right; }
-    td.head-vol { text-align: center; }
-    div.Pp { margin: 1ex 0ex; }
-  </style>
   <link rel="stylesheet" href="mandoc.css" type="text/css" media="all"/>
   <title>RGBFIX(1)</title>
 </head>
@@ -20,189 +21,158 @@
   </tr>
 </table>
 <div class="manual-text">
-<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgbfix</b> &#x2014; <span class="Nd" title="Nd">Game
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-  Boy checksum fixer</span>
+<code class="Nm">rgbfix</code> &#x2014;
-<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="selflink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<div class="Nd">Game Boy checksum fixer</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
 <table class="Nm">
   <tr>
-    <td><b class="Nm" title="Nm">rgbfix</b></td>
+    <td><code class="Nm">rgbfix</code></td>
-    <td>[<span class="Op"><b class="Fl" title="Fl">-CcjsVv</b></span>]
+    <td>[<code class="Fl">-CcjsVv</code>] [<code class="Fl">-f</code>
-      [<span class="Op"><b class="Fl" title="Fl">-f</b>
+      <var class="Ar">fix_spec</var>] [<code class="Fl">-i</code>
-      <var class="Ar" title="Ar">fix_spec</var></span>]
+      <var class="Ar">game_id</var>] [<code class="Fl">-k</code>
-      [<span class="Op"><b class="Fl" title="Fl">-i</b>
+      <var class="Ar">licensee_str</var>] [<code class="Fl">-l</code>
-      <var class="Ar" title="Ar">game_id</var></span>]
+      <var class="Ar">licensee_id</var>] [<code class="Fl">-m</code>
-      [<span class="Op"><b class="Fl" title="Fl">-k</b>
+      <var class="Ar">mbc_type</var>] [<code class="Fl">-n</code>
-      <var class="Ar" title="Ar">licensee_str</var></span>]
+      <var class="Ar">rom_version</var>] [<code class="Fl">-p</code>
-      [<span class="Op"><b class="Fl" title="Fl">-l</b>
+      <var class="Ar">pad_value</var>] [<code class="Fl">-r</code>
-      <var class="Ar" title="Ar">licensee_id</var></span>]
+      <var class="Ar">ram_size</var>] [<code class="Fl">-t</code>
-      [<span class="Op"><b class="Fl" title="Fl">-m</b>
+      <var class="Ar">title_str</var>] <var class="Ar">file</var></td>
-      <var class="Ar" title="Ar">mbc_type</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-n</b>
-      <var class="Ar" title="Ar">rom_version</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-p</b>
-      <var class="Ar" title="Ar">pad_value</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-r</b>
-      <var class="Ar" title="Ar">ram_size</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-t</b>
-      <var class="Ar" title="Ar">title_str</var></span>]
-      <var class="Ar" title="Ar">file</var></td>
   </tr>
 </table>
-<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+</section>
-The <b class="Nm" title="Nm">rgbfix</b> program changes headers of Game Boy ROM
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+The <code class="Nm">rgbfix</code> program changes headers of Game Boy ROM
   images. It also performs other filetype operations, such as truncation. The
   arguments are as follows:
 <dl class="Bl-tag">
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#C"><code class="Fl" id="C">-C</code></a></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Set the Game Boy Color&#x2013;only flag: <span class="Ad">0x143</span> =
-  <dt class="It-tag"><a class="selflink" href="#C"><b class="Fl" title="Fl" id="C">-C</b></a></dt>
+      0xC0. If both this and the <code class="Fl">-c</code> flag are set, this
-  <dd class="It-tag">Set the Game Boy Color&#x2013;only flag:
+      takes precedence.</dd>
-      <i class="Ad">0x143</i> = 0xC0. If both this and the
+  <dt><a class="permalink" href="#c"><code class="Fl" id="c">-c</code></a></dt>
-      <b class="Fl" title="Fl">-c</b> flag are set, this takes precedence.</dd>
+  <dd>Set the Game Boy Color&#x2013;compatible flag:
-  <dt class="It-tag">&#x00A0;</dt>
+      <span class="Ad">0x143</span> = 0x80. If both this and the
-  <dd class="It-tag">&#x00A0;</dd>
+      <code class="Fl">-C</code> flag are set, <code class="Fl">-C</code> takes
-  <dt class="It-tag"><a class="selflink" href="#c"><b class="Fl" title="Fl" id="c">-c</b></a></dt>
+      precedence.</dd>
-  <dd class="It-tag">Set the Game Boy Color&#x2013;compatible flag:
+  <dt><a class="permalink" href="#f"><code class="Fl" id="f">-f</code></a>
-      <i class="Ad">0x143</i> = 0x80. If both this and the
+    <var class="Ar">fix_spec</var></dt>
-      <b class="Fl" title="Fl">-C</b> flag are set,
+  <dd>Fix certain header values that the Game Boy checks for correctness.
-      <b class="Fl" title="Fl">-C</b> takes precedence.</dd>
+      Alternatively, intentionally trash these values by writing their binary
-  <dt class="It-tag">&#x00A0;</dt>
+      inverse instead. <var class="Ar">fix_spec</var> is a string containing any
-  <dd class="It-tag">&#x00A0;</dd>
+      combination of the following characters:
-  <dt class="It-tag"><a class="selflink" href="#f"><b class="Fl" title="Fl" id="f">-f</b></a>
+    <p class="Pp"></p>
-    <var class="Ar" title="Ar">fix_spec</var></dt>
+    <dl class="Bl-tag Bl-compact">
-  <dd class="It-tag">Fix certain header values that the Game Boy checks for
+      <dt><a class="permalink" href="#l"><code class="Cm" id="l">l</code></a></dt>
-      correctness. Alternatively, intentionally trash these values by writing
+      <dd>Fix the Nintendo logo
-      their binary inverse instead. <var class="Ar" title="Ar">fix_spec</var> is
+          (<span class="Ad">0x104</span>&#x2013;<span class="Ad">0x133</span>).</dd>
-      a string containing any combination of the following characters:
+      <dt><a class="permalink" href="#L"><code class="Cm" id="L">L</code></a></dt>
-    <div class="Pp"></div>
+      <dd>Trash the Nintendo logo.</dd>
-    <dl class="Bl-tag Bl-compact" style="margin-left: 5.40ex;">
+      <dt><a class="permalink" href="#h"><code class="Cm" id="h">h</code></a></dt>
-      <dt class="It-tag" style="margin-left: -5.40ex;"><a class="selflink" href="#l"><b class="Cm" title="Cm" id="l">l</b></a></dt>
+      <dd>Fix the header checksum (<span class="Ad">0x14D</span>).</dd>
-      <dd class="It-tag">Fix the Nintendo logo
+      <dt><a class="permalink" href="#H"><code class="Cm" id="H">H</code></a></dt>
-          (<i class="Ad">0x104</i>&#x2013;<i class="Ad">0x133</i>).</dd>
+      <dd>Trash the header checksum.</dd>
-      <dt class="It-tag" style="margin-left: -5.40ex;"><a class="selflink" href="#L"><b class="Cm" title="Cm" id="L">L</b></a></dt>
+      <dt><a class="permalink" href="#g"><code class="Cm" id="g">g</code></a></dt>
-      <dd class="It-tag">Trash the Nintendo logo.</dd>
+      <dd>Fix the global checksum
-      <dt class="It-tag" style="margin-left: -5.40ex;"><a class="selflink" href="#h"><b class="Cm" title="Cm" id="h">h</b></a></dt>
+          (<span class="Ad">0x14E</span>&#x2013;<span class="Ad">0x14F</span>).</dd>
-      <dd class="It-tag">Fix the header checksum (<i class="Ad">0x14D</i>).</dd>
+      <dt><a class="permalink" href="#G"><code class="Cm" id="G">G</code></a></dt>
-      <dt class="It-tag" style="margin-left: -5.40ex;"><a class="selflink" href="#H"><b class="Cm" title="Cm" id="H">H</b></a></dt>
+      <dd>Trash the global checksum.</dd>
-      <dd class="It-tag">Trash the header checksum.</dd>
-      <dt class="It-tag" style="margin-left: -5.40ex;"><a class="selflink" href="#g"><b class="Cm" title="Cm" id="g">g</b></a></dt>
-      <dd class="It-tag">Fix the global checksum
-          (<i class="Ad">0x14E</i>&#x2013;<i class="Ad">0x14F</i>).</dd>
-      <dt class="It-tag" style="margin-left: -5.40ex;"><a class="selflink" href="#G"><b class="Cm" title="Cm" id="G">G</b></a></dt>
-      <dd class="It-tag">Trash the global checksum.</dd>
     </dl>
   </dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#i"><code class="Fl" id="i">-i</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">game_id</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#i"><b class="Fl" title="Fl" id="i">-i</b></a>
+  <dd>Set the game ID string
-    <var class="Ar" title="Ar">game_id</var></dt>
+      (<span class="Ad">0x13F</span>&#x2013;<span class="Ad">0x142</span>) to a
-  <dd class="It-tag">Set the game ID string
+      given string of exactly 4 characters. If both this and the title are set,
-      (<i class="Ad">0x13F</i>&#x2013;<i class="Ad">0x142</i>) to a given string
+      the game ID will overwrite the overlapping portion of the title.</dd>
-      of exactly 4 characters. If both this and the title are set, the game ID
+  <dt><a class="permalink" href="#j"><code class="Fl" id="j">-j</code></a></dt>
-      will overwrite the overlapping portion of the title.</dd>
+  <dd>Set the non-Japanese region flag: <span class="Ad">0x14A</span> = 1.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#k"><code class="Fl" id="k">-k</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">licensee_str</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#j"><b class="Fl" title="Fl" id="j">-j</b></a></dt>
+  <dd>Set the new licensee string
-  <dd class="It-tag">Set the non-Japanese region flag: <i class="Ad">0x14A</i> =
+      (<span class="Ad">0x144</span>&#x2013;<span class="Ad">0x145</span>) to a
-      1.</dd>
+      given string, truncated to at most two characters.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#l_2"><code class="Fl" id="l_2">-l</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">licensee_id</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#k"><b class="Fl" title="Fl" id="k">-k</b></a>
+  <dd>Set the old licensee code, <span class="Ad">0x14B</span>, to a given value
-    <var class="Ar" title="Ar">licensee_str</var></dt>
+      from 0 to 0xFF. This value is deprecated and should be set to 0x33 in all
-  <dd class="It-tag">Set the new licensee string
+      new software.</dd>
-      (<i class="Ad">0x144</i>&#x2013;<i class="Ad">0x145</i>) to a given
+  <dt><a class="permalink" href="#m"><code class="Fl" id="m">-m</code></a>
-      string, truncated to at most two characters.</dd>
+    <var class="Ar">mbc_type</var></dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Set the MBC type, <span class="Ad">0x147</span>, to a given value from 0
-  <dd class="It-tag">&#x00A0;</dd>
+      to 0xFF.</dd>
-  <dt class="It-tag"><a class="selflink" href="#l"><b class="Fl" title="Fl" id="l">-l</b></a>
+  <dt><a class="permalink" href="#n"><code class="Fl" id="n">-n</code></a>
-    <var class="Ar" title="Ar">licensee_id</var></dt>
+    <var class="Ar">rom_version</var></dt>
-  <dd class="It-tag">Set the old licensee code, <i class="Ad">0x14B</i>, to a
+  <dd>Set the ROM version, <span class="Ad">0x14C</span>, to a given value from
-      given value from 0 to 0xFF. This value is deprecated and should be set to
+      0 to 0xFF.</dd>
-      0x33 in all new software.</dd>
+  <dt><a class="permalink" href="#p"><code class="Fl" id="p">-p</code></a>
-  <dt class="It-tag">&#x00A0;</dt>
+    <var class="Ar">pad_value</var></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Pad the image to a valid size with a given pad value from 0 to 0xFF.
-  <dt class="It-tag"><a class="selflink" href="#m"><b class="Fl" title="Fl" id="m">-m</b></a>
+      <code class="Nm">rgbfix</code> will automatically pick a size from 32KiB,
-    <var class="Ar" title="Ar">mbc_type</var></dt>
+      64KiB, 128KiB, ..., 8192KiB and give a warning thereafter. The cartridge
-  <dd class="It-tag">Set the MBC type, <i class="Ad">0x147</i>, to a given value
+      size byte (<span class="Ad">0x148</span>) will be changed to reflect this
-      from 0 to 0xFF.</dd>
+      new size.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#r"><code class="Fl" id="r">-r</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">ram_size</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#n"><b class="Fl" title="Fl" id="n">-n</b></a>
+  <dd>Set the RAM size, <span class="Ad">0x149</span>, to a given value from 0
-    <var class="Ar" title="Ar">rom_version</var></dt>
+      to 0xFF.</dd>
-  <dd class="It-tag">Set the ROM version, <i class="Ad">0x14C</i>, to a given
+  <dt><a class="permalink" href="#s"><code class="Fl" id="s">-s</code></a></dt>
-      value from 0 to 0xFF.</dd>
+  <dd>Set the SGB flag: <span class="Ad">0x146</span> = 3.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#t"><code class="Fl" id="t">-t</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">title</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#p"><b class="Fl" title="Fl" id="p">-p</b></a>
+  <dd>Set the title string
-    <var class="Ar" title="Ar">pad_value</var></dt>
+      (<span class="Ad">0x134</span>&#x2013;<span class="Ad">0x143</span>) to a
-  <dd class="It-tag">Pad the image to a valid size with a given pad value from 0
+      given string, truncated to at most 16 characters. It is recommended to use
-      to 0xFF. <b class="Nm" title="Nm">rgbfix</b> will automatically pick a
+      15 characters instead, to avoid clashing with the CGB flag
-      size from 32KiB, 64KiB, 128KiB, ..., 8192KiB and give a warning
+      (<code class="Fl">-c</code> or <code class="Fl">-C</code>). If both this
-      thereafter. The cartridge size byte (<i class="Ad">0x148</i>) will be
+      and the game ID are set, the game ID will overwrite the overlapping
-      changed to reflect this new size.</dd>
+      portion of the title.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#V"><code class="Fl" id="V">-V</code></a></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Print the version of the program and exit.</dd>
-  <dt class="It-tag"><a class="selflink" href="#r"><b class="Fl" title="Fl" id="r">-r</b></a>
+  <dt><a class="permalink" href="#v"><code class="Fl" id="v">-v</code></a></dt>
-    <var class="Ar" title="Ar">ram_size</var></dt>
+  <dd>Equivalent to <code class="Fl">-f</code> <code class="Cm">lhg</code>.</dd>
-  <dd class="It-tag">Set the RAM size, <i class="Ad">0x149</i>, to a given value
-      from 0 to 0xFF.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#s"><b class="Fl" title="Fl" id="s">-s</b></a></dt>
-  <dd class="It-tag">Set the SGB flag: <i class="Ad">0x146</i> = 3.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#t"><b class="Fl" title="Fl" id="t">-t</b></a>
-    <var class="Ar" title="Ar">title</var></dt>
-  <dd class="It-tag">Set the title string
-      (<i class="Ad">0x134</i>&#x2013;<i class="Ad">0x143</i>) to a given
-      string, truncated to at most 16 characters. It is recommended to use 15
-      characters instead, to avoid clashing with the CGB flag
-      (<b class="Fl" title="Fl">-c</b> or <b class="Fl" title="Fl">-C</b>). If
-      both this and the game ID are set, the game ID will overwrite the
-      overlapping portion of the title.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#V"><b class="Fl" title="Fl" id="V">-V</b></a></dt>
-  <dd class="It-tag">Print the version of the program and exit.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#v"><b class="Fl" title="Fl" id="v">-v</b></a></dt>
-  <dd class="It-tag">Equivalent to <b class="Fl" title="Fl">-f</b>
-      <b class="Cm" title="Cm">lhg</b>.</dd>
 </dl>
-<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="selflink" href="#EXAMPLES">EXAMPLES</a></h1>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
 Most values in the ROM header are only cosmetic. The bare minimum requirements
   for a workable image are checksums, the Nintendo logo, and (if needed) the
   CGB/SGB flags. It is a good idea to pad the image to a valid size as well
   (&#x201C;valid&#x201D; meaning a multiple of 32KiB).
-<div class="Pp"></div>
+<p class="Pp">The following will make a plain, no-color Game Boy game without
-The following will make a plain, no-color Game Boy game without checking for a
+    checking for a valid size:</p>
-  valid size:
+<p class="Pp"></p>
-<div class="Pp"></div>
+<div class="Bd Bd-indent">$ rgbfix -v foo.gb</div>
-<div class="D1">$ rgbfix -v foo.gb</div>
+<p class="Pp">The following will make a SGB-enabled, color-enabled game with a
-<div class="Pp"></div>
+    title of &#x201C;foobar&#x201D;, and pad it to a multiple of 32KiB. (The
-The following will make a SGB-enabled, color-enabled game with a title of
+    Game Boy itself does not use the title, but some emulators or ROM managers
-  &#x201C;foobar&#x201D;, and pad it to a multiple of 32KiB. (The Game Boy
+    might.)</p>
-  itself does not use the title, but some emulators or ROM managers might.)
+<p class="Pp"></p>
-<div class="Pp"></div>
+<div class="Bd Bd-indent">$ rgbfix -vcs -l 0x33 -p 0 -t foobar baz.gb</div>
-<div class="D1">$ rgbfix -vcs -l 0x33 -p 0 -t foobar baz.gb</div>
+<p class="Pp">The following will duplicate the header (sans global checksum) of
-<div class="Pp"></div>
+    the game &#x201C;Survival Kids&#x201D;:</p>
-The following will duplicate the header (sans global checksum) of the game
+<p class="Pp"></p>
-  &#x201C;Survival Kids&#x201D;:
+<div class="Bd Bd-indent">$ rgbfix -cjsv -k A4 -l 0x33 -m 0x1B -p 0xFF -r 3 -t
-<div class="Pp"></div>
-<div class="D1">$ rgbfix -cjsv -k A4 -l 0x33 -m 0x1B -p 0xFF -r 3 -t
   SURVIVALKIDAVKE SurvivalKids.gbc</div>
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
-<a class="Xr" title="Xr">rgbasm(1)</a>, <a class="Xr" title="Xr">rgblink(1)</a>,
+<a class="Xr">rgbasm(1)</a>, <a class="Xr">rgblink(1)</a>,
-  <a class="Xr" title="Xr">rgbds(7)</a>
+  <a class="Xr">rgbds(7)</a>
-<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
+</section>
-<b class="Nm" title="Nm">rgbfix</b> was originally released by Carsten
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
+<code class="Nm">rgbfix</code> was originally released by Carsten
   S&#x00F8;rensen as a standalone program called gbfix, and was later packaged
   in RGBDS by Justin Lloyd. It is now maintained by a number of contributors at
-  <a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</div>
+  <a class="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.
+</section>
+</div>
 <table class="foot">
   <tr>
     <td class="foot-date">March 11, 2018</td>

docs/rgbgfx.1.html

@@ -1,13 +1,14 @@
 <!DOCTYPE html>
 <html>
+<!-- This is an automatically generated file.  Do not edit.
+   This file is part of RGBDS.
+  
+   Copyright (c) 2013-2018, stag019 and RGBDS contributors.
+  
+   SPDX-License-Identifier: MIT
+   -->
 <head>
   <meta charset="utf-8"/>
-  <style>
-    table.head, table.foot { width: 100%; }
-    td.head-rtitle, td.foot-os { text-align: right; }
-    td.head-vol { text-align: center; }
-    div.Pp { margin: 1ex 0ex; }
-  </style>
   <link rel="stylesheet" href="mandoc.css" type="text/css" media="all"/>
   <title>RGBGFX(1)</title>
 </head>
@@ -20,151 +21,155 @@
   </tr>
 </table>
 <div class="manual-text">
-<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgbgfx</b> &#x2014; <span class="Nd" title="Nd">Game
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-  Boy graphics converter</span>
+<code class="Nm">rgbgfx</code> &#x2014;
-<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="selflink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<div class="Nd">Game Boy graphics converter</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
 <table class="Nm">
   <tr>
-    <td><b class="Nm" title="Nm">rgbgfx</b></td>
+    <td><code class="Nm">rgbgfx</code></td>
-    <td>[<span class="Op"><b class="Fl" title="Fl">-DfFhPTVv</b></span>]
+    <td>[<code class="Fl">-ADfFhmPTuVv</code>] [<code class="Fl">-o</code>
-      [<span class="Op"><b class="Fl" title="Fl">-o</b>
+      <var class="Ar">outfile</var>] [<code class="Fl">-a</code>
-      <var class="Ar" title="Ar">outfile</var></span>]
+      <var class="Ar">attrmap</var>] [<code class="Fl">-d</code>
-      [<span class="Op"><b class="Fl" title="Fl">-d</b>
+      <var class="Ar">depth</var>] [<code class="Fl">-p</code>
-      <var class="Ar" title="Ar">depth</var></span>]
+      <var class="Ar">palfile</var>] [<code class="Fl">-t</code>
-      [<span class="Op"><b class="Fl" title="Fl">-p</b>
+      <var class="Ar">tilemap</var>] [<code class="Fl">-x</code>
-      <var class="Ar" title="Ar">palfile</var></span>]
+      <var class="Ar">tiles</var>] <var class="Ar">file</var></td>
-      [<span class="Op"><b class="Fl" title="Fl">-t</b>
-      <var class="Ar" title="Ar">mapfile</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-x</b>
-      <var class="Ar" title="Ar">tiles</var></span>]
-      <var class="Ar" title="Ar">file</var></td>
   </tr>
 </table>
-<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+</section>
-The <b class="Nm" title="Nm">rgbgfx</b> program converts PNG images into the
+<section class="Sh">
-  Nintendo Game Boy's planar tile format.
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<div style="height: 1.00em;">&#x00A0;</div>
+The <code class="Nm">rgbgfx</code> program converts PNG images into the Nintendo
-The resulting colors and their palette indices are determined differently
+  Game Boy's planar tile format.
-  depending on the input PNG file:
+<p class="Pp">The resulting colors and their palette indices are determined
+    differently depending on the input PNG file:</p>
 <ul class="Bl-dash">
-  <li class="It-dash">If the file has an embedded palette, that palette's color
+  <li>If the file has an embedded palette, that palette's color and order are
-      and order are used.</li>
+      used.</li>
-  <li class="It-dash">If not, and the image only contains shades of gray, rgbgfx
+  <li>If not, and the image only contains shades of gray, rgbgfx maps them to
-      maps them to the indices appropriate for each shade. Any undetermined
+      the indices appropriate for each shade. Any undetermined indices are set
-      indices are set to respective default shades of gray. For example: if the
+      to respective default shades of gray. For example: if the bit depth is 2
-      bit depth is 2 and the image contains light gray and black, they become
+      and the image contains light gray and black, they become the second and
-      the second and fourth colors - and the first and third colors get set to
+      fourth colors - and the first and third colors get set to default white
-      default white and dark gray. If the image has multiple shades that map to
+      and dark gray. If the image has multiple shades that map to the same
-      the same index, the palette is instead determined as if the image had
+      index, the palette is instead determined as if the image had color.</li>
-      color.</li>
+  <li>If the image has color (or the grayscale method failed), the colors are
-  <li class="It-dash">If the image has color (or the grayscale method failed),
+      sorted from lightest to darkest.</li>
-      the colors are sorted from lightest to darkest.</li>
 </ul>
-<div style="height: 1.00em;">&#x00A0;</div>
+<p class="Pp">The input image may not contain more colors than the selected bit
-The input image may not contain more colors than the selected bit depth allows.
+    depth allows. Transparent pixels are set to palette index 0.</p>
-  Transparent pixels are set to palette index 0.
+</section>
-<h1 class="Sh" title="Sh" id="ARGUMENTS"><a class="selflink" href="#ARGUMENTS">ARGUMENTS</a></h1>
+<section class="Sh">
+<h1 class="Sh" id="ARGUMENTS"><a class="permalink" href="#ARGUMENTS">ARGUMENTS</a></h1>
 <dl class="Bl-tag">
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#a"><code class="Fl" id="a">-a</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">attrmap</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#D"><b class="Fl" title="Fl" id="D">-D</b></a></dt>
+  <dd>Generate a file of tile mirroring attributes for OAM or (CGB-only)
-  <dd class="It-tag">Debug features are enabled.</dd>
+      background tiles. For each tile in the input file, a byte is written
-  <dt class="It-tag">&#x00A0;</dt>
+      representing the dimensions that the associated tile in the output file
-  <dd class="It-tag">&#x00A0;</dd>
+      should be mirrored. Useful in combination with <code class="Fl">-m</code>
-  <dt class="It-tag"><a class="selflink" href="#f"><b class="Fl" title="Fl" id="f">-f</b></a></dt>
+      to keep track the mirror direction of mirrored duplicate tiles.</dd>
-  <dd class="It-tag">Fix the input PNG file to be a correctly indexed
+  <dt><a class="permalink" href="#A"><code class="Fl" id="A">-A</code></a></dt>
-    image.</dd>
+  <dd>Same as <code class="Fl">-a</code>, but the attrmap file output name is
-  <dt class="It-tag">&#x00A0;</dt>
+      made by taking the input filename, removing the file extension, and
-  <dd class="It-tag">&#x00A0;</dd>
+      appending <span class="Pa">.attrmap</span>.</dd>
-  <dt class="It-tag"><a class="selflink" href="#F"><b class="Fl" title="Fl" id="F">-F</b></a></dt>
+  <dt><a class="permalink" href="#C"><code class="Fl" id="C">-C</code></a></dt>
-  <dd class="It-tag">Same as <b class="Fl" title="Fl">-f</b>, but additionally,
+  <dd>Use the color curve of the Game Boy Color when generating palettes.</dd>
-      the supplied command line parameters are saved within the PNG and will be
+  <dt><a class="permalink" href="#D"><code class="Fl" id="D">-D</code></a></dt>
-      loaded and automatically used next time.</dd>
+  <dd>Debug features are enabled.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#f"><code class="Fl" id="f">-f</code></a></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Fix the input PNG file to be a correctly indexed image.</dd>
-  <dt class="It-tag"><a class="selflink" href="#d"><b class="Fl" title="Fl" id="d">-d</b></a>
+  <dt><a class="permalink" href="#F"><code class="Fl" id="F">-F</code></a></dt>
-    <var class="Ar" title="Ar">depth</var></dt>
+  <dd>Same as <code class="Fl">-f</code>, but additionally, the supplied command
-  <dd class="It-tag">The bit depth of the output image (either 1 or 2). By
+      line parameters are saved within the PNG and will be loaded and
-      default, the bit depth is 2 (two bits per pixel).</dd>
+      automatically used next time.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#d"><code class="Fl" id="d">-d</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">depth</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#h"><b class="Fl" title="Fl" id="h">-h</b></a></dt>
+  <dd>The bit depth of the output image (either 1 or 2). By default, the bit
-  <dd class="It-tag">Lay out tiles horizontally rather than vertically.</dd>
+      depth is 2 (two bits per pixel).</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#h"><code class="Fl" id="h">-h</code></a></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Lay out tiles horizontally rather than vertically.</dd>
-  <dt class="It-tag"><a class="selflink" href="#o"><b class="Fl" title="Fl" id="o">-o</b></a>
+  <dt><a class="permalink" href="#m"><code class="Fl" id="m">-m</code></a></dt>
-    <var class="Ar" title="Ar">outfile</var></dt>
+  <dd>Truncate tiles by checking for tiles that are mirrored versions of others
-  <dd class="It-tag">The name of the output file.</dd>
+      and omitting these from the output file. Useful with tilemaps and attrmaps
-  <dt class="It-tag">&#x00A0;</dt>
+      together to keep track of the duplicated tiles and the dimension mirrored.
-  <dd class="It-tag">&#x00A0;</dd>
+      Tiles are checked for horizontal, vertical, and horizontal-vertical
-  <dt class="It-tag"><a class="selflink" href="#p"><b class="Fl" title="Fl" id="p">-p</b></a>
+      mirroring. Implies <code class="Fl">-u</code>.</dd>
-    <var class="Ar" title="Ar">palfile</var></dt>
+  <dt><a class="permalink" href="#o"><code class="Fl" id="o">-o</code></a>
-  <dd class="It-tag">Output the image's palette in standard GBC palette format -
+    <var class="Ar">outfile</var></dt>
-      bytes (8 bytes for two bits per pixel, 4 bytes for one bit per pixel)
+  <dd>The name of the output file.</dd>
-      containing the RGB15 values in little-endian byte order. If the palette
+  <dt><a class="permalink" href="#p"><code class="Fl" id="p">-p</code></a>
-      contains too few colors, the remaining entries are set to black.</dd>
+    <var class="Ar">palfile</var></dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Output the image's palette in standard GBC palette format - bytes (8 bytes
-  <dd class="It-tag">&#x00A0;</dd>
+      for two bits per pixel, 4 bytes for one bit per pixel) containing the
-  <dt class="It-tag"><a class="selflink" href="#P"><b class="Fl" title="Fl" id="P">-P</b></a></dt>
+      RGB15 values in little-endian byte order. If the palette contains too few
-  <dd class="It-tag">Same as <b class="Fl" title="Fl">-p</b>, but the palette
+      colors, the remaining entries are set to black.</dd>
-      file output name is made by taking the input PNG file's filename, removing
+  <dt><a class="permalink" href="#P"><code class="Fl" id="P">-P</code></a></dt>
-      the file extension, and appending <i class="Pa" title="Pa">.pal</i>.</dd>
+  <dd>Same as <code class="Fl">-p</code>, but the palette file output name is
-  <dt class="It-tag">&#x00A0;</dt>
+      made by taking the input PNG file's filename, removing the file extension,
-  <dd class="It-tag">&#x00A0;</dd>
+      and appending <span class="Pa">.pal</span>.</dd>
-  <dt class="It-tag"><a class="selflink" href="#t"><b class="Fl" title="Fl" id="t">-t</b></a>
+  <dt><a class="permalink" href="#t"><code class="Fl" id="t">-t</code></a>
-    <var class="Ar" title="Ar">mapfile</var></dt>
+    <var class="Ar">tilemap</var></dt>
-  <dd class="It-tag">If any tiles are the same, don't place the repeat tiles in
+  <dd>Generate a file of tile indices. For each tile in the input file, a byte
-      the output file, and make a tilemap file.</dd>
+      is written representing the index of the associated tile in the output
-  <dt class="It-tag">&#x00A0;</dt>
+      file. Useful in combination with <code class="Fl">-u</code> or
-  <dd class="It-tag">&#x00A0;</dd>
+      <code class="Fl">-m</code> to keep track of duplicate tiles.</dd>
-  <dt class="It-tag"><a class="selflink" href="#T"><b class="Fl" title="Fl" id="T">-T</b></a></dt>
+  <dt><a class="permalink" href="#T"><code class="Fl" id="T">-T</code></a></dt>
-  <dd class="It-tag">Same as <b class="Fl" title="Fl">-t</b>, but the tilemap
+  <dd>Same as <code class="Fl">-t</code>, but the tilemap file output name is
-      file output name is made by taking the input filename, removing the file
+      made by taking the input filename, removing the file extension, and
-      extension, and appending <i class="Pa" title="Pa">.tilemap</i>.</dd>
+      appending <span class="Pa">.tilemap</span>.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#u"><code class="Fl" id="u">-u</code></a></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Truncate tiles by checking for tiles that are exact duplicates of others
-  <dt class="It-tag"><a class="selflink" href="#u"><b class="Fl" title="Fl" id="u">-u</b></a></dt>
+      and omitting these from the output file. Useful with tilemaps to keep
-  <dd class="It-tag">Truncate repeated tiles. Useful with tilemaps.</dd>
+      track of the duplicated tiles.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#V"><code class="Fl" id="V">-V</code></a></dt>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dd>Print the version of the program and exit.</dd>
-  <dt class="It-tag"><a class="selflink" href="#V"><b class="Fl" title="Fl" id="V">-V</b></a></dt>
+  <dt><a class="permalink" href="#v"><code class="Fl" id="v">-v</code></a></dt>
-  <dd class="It-tag">Print the version of the program and exit.</dd>
+  <dd>Verbose. Print errors when the command line parameters and the parameters
-  <dt class="It-tag">&#x00A0;</dt>
+      in the PNG file don't match.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dt><a class="permalink" href="#x"><code class="Fl" id="x">-x</code></a>
-  <dt class="It-tag"><a class="selflink" href="#v"><b class="Fl" title="Fl" id="v">-v</b></a></dt>
+    <var class="Ar">tiles</var></dt>
-  <dd class="It-tag">Verbose. Print errors when the command line parameters and
+  <dd>Trim the end of the output file by this many tiles.</dd>
-      the parameters in the PNG file don't match.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#x"><b class="Fl" title="Fl" id="x">-x</b></a>
-    <var class="Ar" title="Ar">tiles</var></dt>
-  <dd class="It-tag">Trim the end of the output file by this many tiles.</dd>
 </dl>
-<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="selflink" href="#EXAMPLES">EXAMPLES</a></h1>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
 The following will take a PNG file with a bit depth of 1, 2, or 8, and output
   planar 2bpp data:
-<div class="Pp"></div>
+<p class="Pp"></p>
-<div class="D1">$ rgbgfx -o out.2bpp in.png</div>
+<div class="Bd Bd-indent">$ rgbgfx -o out.2bpp in.png</div>
-<div class="Pp"></div>
+<p class="Pp">The following creates a planar 2bpp file with only unique tiles,
-The following creates a planar 2bpp file with only unique tiles, and its tilemap
+    and its tilemap <span class="Pa">out.tilemap</span>:</p>
-  <i class="Pa" title="Pa">out.tilemap</i>:
+<p class="Pp"></p>
-<div class="Pp"></div>
+<div class="Bd Bd-indent">$ rgbgfx -T -u -o out.2bpp in.png</div>
-<div class="D1">$ rgbgfx -T -u -o out.2bpp in.png</div>
+<p class="Pp">The following creates a planar 2bpp file with only unique tiles
-<div class="Pp"></div>
+    (accounting for tile mirroring) and its associated tilemap
-The following will do nothing:
+    <span class="Pa">out.tilemap</span> and attrmap
-<div class="Pp"></div>
+    <span class="Pa">out.attrmap</span>:</p>
-<div class="D1">$ rgbgfx in.png</div>
+<p class="Pp"></p>
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
+<div class="Bd Bd-indent">$ rgbgfx -A -T -m -o out.2bpp in.png</div>
+<p class="Pp">The following will do nothing:</p>
+<p class="Pp"></p>
+<div class="Bd Bd-indent">$ rgbgfx in.png</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
-<a class="Xr" title="Xr">rgbds(7)</a>, <a class="Xr" title="Xr">rgbasm(1)</a>,
+<a class="Xr">rgbds(7)</a>, <a class="Xr">rgbasm(1)</a>,
-  <a class="Xr" title="Xr">rgblink(1)</a>,
+  <a class="Xr">rgblink(1)</a>, <a class="Xr">rgbfix(1)</a>,
-  <a class="Xr" title="Xr">rgbfix(1)</a>, <a class="Xr" title="Xr">gbz80(7)</a>
+  <a class="Xr">gbz80(7)</a>
-<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
+</section>
-<b class="Nm" title="Nm">rgbgfx</b> was created by
+<section class="Sh">
-  <span class="An" title="An">stag019</span> to be included in RGBDS. It is now
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-  maintained by a number of contributors at
+<code class="Nm">rgbgfx</code> was created by <span class="An">stag019</span> to
-  <a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</div>
+  be included in RGBDS. It is now maintained by a number of contributors at
+  <a class="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.
+</section>
+</div>
 <table class="foot">
   <tr>
     <td class="foot-date">January 26, 2018</td>

docs/rgblink.1.html

@@ -1,13 +1,14 @@
 <!DOCTYPE html>
 <html>
+<!-- This is an automatically generated file.  Do not edit.
+   This file is part of RGBDS.
+  
+   Copyright (c) 2010-2018, Anthony J. Bentley and RGBDS contributors.
+  
+   SPDX-License-Identifier: MIT
+   -->
 <head>
   <meta charset="utf-8"/>
-  <style>
-    table.head, table.foot { width: 100%; }
-    td.head-rtitle, td.foot-os { text-align: right; }
-    td.head-vol { text-align: center; }
-    div.Pp { margin: 1ex 0ex; }
-  </style>
   <link rel="stylesheet" href="mandoc.css" type="text/css" media="all"/>
   <title>RGBLINK(1)</title>
 </head>
@@ -20,137 +21,113 @@
   </tr>
 </table>
 <div class="manual-text">
-<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgblink</b> &#x2014; <span class="Nd" title="Nd">Game
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-  Boy linker</span>
+<code class="Nm">rgblink</code> &#x2014;
-<h1 class="Sh" title="Sh" id="SYNOPSIS"><a class="selflink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<div class="Nd">Game Boy linker</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
 <table class="Nm">
   <tr>
-    <td><b class="Nm" title="Nm">rgblink</b></td>
+    <td><code class="Nm">rgblink</code></td>
-    <td>[<span class="Op"><b class="Fl" title="Fl">-dtVw</b></span>]
+    <td>[<code class="Fl">-dtVw</code>] [<code class="Fl">-m</code>
-      [<span class="Op"><b class="Fl" title="Fl">-m</b>
+      <var class="Ar">mapfile</var>] [<code class="Fl">-n</code>
-      <var class="Ar" title="Ar">mapfile</var></span>]
+      <var class="Ar">symfile</var>] [<code class="Fl">-O</code>
-      [<span class="Op"><b class="Fl" title="Fl">-n</b>
+      <var class="Ar">overlayfile</var>] [<code class="Fl">-o</code>
-      <var class="Ar" title="Ar">symfile</var></span>]
+      <var class="Ar">outfile</var>] [<code class="Fl">-p</code>
-      [<span class="Op"><b class="Fl" title="Fl">-O</b>
+      <var class="Ar">pad_value</var>] [<code class="Fl">-s</code>
-      <var class="Ar" title="Ar">overlayfile</var></span>]
+      <var class="Ar">symbol</var>] [<code class="Fl">-l</code>
-      [<span class="Op"><b class="Fl" title="Fl">-o</b>
+      <var class="Ar">linkerscript</var>] <var class="Ar">file ...</var></td>
-      <var class="Ar" title="Ar">outfile</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-p</b>
-      <var class="Ar" title="Ar">pad_value</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-s</b>
-      <var class="Ar" title="Ar">symbol</var></span>]
-      [<span class="Op"><b class="Fl" title="Fl">-l</b>
-      <var class="Ar" title="Ar">linkerscript</var></span>]
-      <var class="Ar" title="Ar">file ...</var></td>
   </tr>
 </table>
-<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+</section>
-The <b class="Nm" title="Nm">rgblink</b> program links objects created by
+<section class="Sh">
-  <a class="Xr" title="Xr">rgbasm(1)</a> into a single Game Boy ROM file.
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<div class="Pp"></div>
+The <code class="Nm">rgblink</code> program links objects created by
-By default, ROM0 sections created by the assembler are placed in the 16KiB bank
+  <a class="Xr">rgbasm(1)</a> into a single Game Boy ROM file.
-  0, and ROMX sections are placed in any bank except bank 0. If your ROM will
+<p class="Pp">By default, ROM0 sections created by the assembler are placed in
-  only be 32KiB, you can use the <b class="Fl" title="Fl">-t</b> option to
+    the 16KiB bank 0, and ROMX sections are placed in any bank except bank 0. If
-  override this.
+    your ROM will only be 32KiB, you can use the <code class="Fl">-t</code>
-<div class="Pp"></div>
+    option to override this.</p>
-Similarly, WRAM0 sections are placed in the first 4KiB of WRAM bank 0 and WRAMX
+<p class="Pp">Similarly, WRAM0 sections are placed in the first 4KiB of WRAM
-  sections are placed in any bank except bank 0. If your ROM doesn't use banked
+    bank 0 and WRAMX sections are placed in any bank except bank 0. If your ROM
-  WRAM you can use option <b class="Fl" title="Fl">-w</b> option to override
+    doesn't use banked WRAM you can use option <code class="Fl">-w</code> option
-  this.
+    to override this.</p>
-<div class="Pp"></div>
+<p class="Pp">Also, if your ROM is designed for DMG, you can make sure that you
-Also, if your ROM is designed for DMG, you can make sure that you don't use any
+    don't use any prohibited section by using the option
-  prohibited section by using the option <b class="Fl" title="Fl">-d</b>, which
+    <code class="Fl">-d</code>, which implies <code class="Fl">-w</code> but
-  implies <b class="Fl" title="Fl">-w</b> but also prohibits the use of VRAM
+    also prohibits the use of VRAM bank 1.</p>
-  bank 1.
+<p class="Pp">The arguments are as follows:</p>
-<div class="Pp"></div>
-The arguments are as follows:
 <dl class="Bl-tag">
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#m"><code class="Fl" id="m">-m</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">mapfile</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#m"><b class="Fl" title="Fl" id="m">-m</b></a>
+  <dd>Write a mapfile to the given filename.</dd>
-    <var class="Ar" title="Ar">mapfile</var></dt>
+  <dt><a class="permalink" href="#n"><code class="Fl" id="n">-n</code></a>
-  <dd class="It-tag">Write a mapfile to the given filename.</dd>
+    <var class="Ar">symfile</var></dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Write a symbol file to the given filename.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dt><a class="permalink" href="#O"><code class="Fl" id="O">-O</code></a>
-  <dt class="It-tag"><a class="selflink" href="#n"><b class="Fl" title="Fl" id="n">-n</b></a>
+    <var class="Ar">overlayfile</var></dt>
-    <var class="Ar" title="Ar">symfile</var></dt>
+  <dd>The ROM image to overlay sections over. When an overlay ROM is provided,
-  <dd class="It-tag">Write a symbol file to the given filename.</dd>
+      all sections must be fixed. This may be used to patch an existing
-  <dt class="It-tag">&#x00A0;</dt>
+    binary.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dt><a class="permalink" href="#o"><code class="Fl" id="o">-o</code></a>
-  <dt class="It-tag"><a class="selflink" href="#O"><b class="Fl" title="Fl" id="O">-O</b></a>
+    <var class="Ar">outfile</var></dt>
-    <var class="Ar" title="Ar">overlayfile</var></dt>
+  <dd>Write ROM image to the given filename.</dd>
-  <dd class="It-tag">The ROM image to overlay sections over. When an overlay ROM
+  <dt><a class="permalink" href="#p"><code class="Fl" id="p">-p</code></a>
-      is provided, all sections must be fixed. This may be used to patch an
+    <var class="Ar">pad_value</var></dt>
-      existing binary.</dd>
+  <dd>When padding an image, pad with this value. The default is 0x00.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dt><a class="permalink" href="#s"><code class="Fl" id="s">-s</code></a>
-  <dd class="It-tag">&#x00A0;</dd>
+    <var class="Ar">symbol</var></dt>
-  <dt class="It-tag"><a class="selflink" href="#o"><b class="Fl" title="Fl" id="o">-o</b></a>
+  <dd>???</dd>
-    <var class="Ar" title="Ar">outfile</var></dt>
+  <dt><a class="permalink" href="#w"><code class="Fl" id="w">-w</code></a></dt>
-  <dd class="It-tag">Write ROM image to the given filename.</dd>
+  <dd>Expand the WRAM0 section size from 4KiB to the full 8KiB assigned to WRAM
-  <dt class="It-tag">&#x00A0;</dt>
+      and prohibit the use of WRAMX sections.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
+  <dt><a class="permalink" href="#d"><code class="Fl" id="d">-d</code></a></dt>
-  <dt class="It-tag"><a class="selflink" href="#p"><b class="Fl" title="Fl" id="p">-p</b></a>
+  <dd>Enable DMG mode. Prohibit the use of sections that doesn't exist on a DMG,
-    <var class="Ar" title="Ar">pad_value</var></dt>
+      such as WRAMX and VRAM bank 1. This option automatically enables
-  <dd class="It-tag">When padding an image, pad with this value. The default is
+      <code class="Fl">-w</code>.</dd>
-      0x00.</dd>
+  <dt><a class="permalink" href="#t"><code class="Fl" id="t">-t</code></a></dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Expand the ROM0 section size from 16KiB to the full 32KiB assigned to ROM
-  <dd class="It-tag">&#x00A0;</dd>
+      and prohibit the use of ROMX sections. Useful for ROMs that fit in 32
-  <dt class="It-tag"><a class="selflink" href="#s"><b class="Fl" title="Fl" id="s">-s</b></a>
+    KiB.</dd>
-    <var class="Ar" title="Ar">symbol</var></dt>
+  <dt><a class="permalink" href="#l"><code class="Fl" id="l">-l</code></a>
-  <dd class="It-tag">???</dd>
+    <var class="Ar">linkerscript</var></dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Specify a linkerscript file that tells the linker how sections must be
-  <dd class="It-tag">&#x00A0;</dd>
+      placed in the ROM. This file has priority over the attributes assigned in
-  <dt class="It-tag"><a class="selflink" href="#w"><b class="Fl" title="Fl" id="w">-w</b></a></dt>
+      the source code, but they have to be consistent. See
-  <dd class="It-tag">Expand the WRAM0 section size from 4KiB to the full 8KiB
+      <a class="Xr">rgblink(5)</a> for more information about its format.</dd>
-      assigned to WRAM and prohibit the use of WRAMX sections.</dd>
+  <dt><a class="permalink" href="#V"><code class="Fl" id="V">-V</code></a></dt>
-  <dt class="It-tag">&#x00A0;</dt>
+  <dd>Print the version of the program and exit.</dd>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#d"><b class="Fl" title="Fl" id="d">-d</b></a></dt>
-  <dd class="It-tag">Enable DMG mode. Prohibit the use of sections that doesn't
-      exist on a DMG, such as WRAMX and VRAM bank 1. This option automatically
-      enables <b class="Fl" title="Fl">-w</b>.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#t"><b class="Fl" title="Fl" id="t">-t</b></a></dt>
-  <dd class="It-tag">Expand the ROM0 section size from 16KiB to the full 32KiB
-      assigned to ROM and prohibit the use of ROMX sections. Useful for ROMs
-      that fit in 32 KiB.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#l"><b class="Fl" title="Fl" id="l">-l</b></a>
-    <var class="Ar" title="Ar">linkerscript</var></dt>
-  <dd class="It-tag">Specify a linkerscript file that tells the linker how
-      sections must be placed in the ROM. This file has priority over the
-      attributes assigned in the source code, but they have to be consistent.
-      See <a class="Xr" title="Xr">rgblink(5)</a> for more information about its
-      format.</dd>
-  <dt class="It-tag">&#x00A0;</dt>
-  <dd class="It-tag">&#x00A0;</dd>
-  <dt class="It-tag"><a class="selflink" href="#V"><b class="Fl" title="Fl" id="V">-V</b></a></dt>
-  <dd class="It-tag">Print the version of the program and exit.</dd>
 </dl>
-<h1 class="Sh" title="Sh" id="EXAMPLES"><a class="selflink" href="#EXAMPLES">EXAMPLES</a></h1>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="EXAMPLES"><a class="permalink" href="#EXAMPLES">EXAMPLES</a></h1>
 All you need for a basic ROM is an object file, which can be made into a ROM
   image like so:
-<div class="Pp"></div>
+<p class="Pp"></p>
-<div class="D1">$ rgblink -o bar.gb foo.o</div>
+<div class="Bd Bd-indent">$ rgblink -o bar.gb foo.o</div>
-<div class="Pp"></div>
+<p class="Pp">The resulting bar.gb will not have correct checksums (unless you
-The resulting bar.gb will not have correct checksums (unless you put them in the
+    put them in the assembly source). You should use <a class="Xr">rgbfix(1)</a>
-  assembly source). You should use <a class="Xr" title="Xr">rgbfix(1)</a> to fix
+    to fix these so that the program will actually run in a Game Boy:</p>
-  these so that the program will actually run in a Game Boy:
+<p class="Pp"></p>
-<div class="Pp"></div>
+<div class="Bd Bd-indent">$ rgbfix -v bar.gb</div>
-<div class="D1">$ rgbfix -v bar.gb</div>
+</section>
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
-<a class="Xr" title="Xr">rgbasm(1)</a>, <a class="Xr" title="Xr">rgblink(5)</a>,
+<a class="Xr">rgbasm(1)</a>, <a class="Xr">rgblink(5)</a>,
-  <a class="Xr" title="Xr">rgbfix(1)</a>, <a class="Xr" title="Xr">rgbds(5)</a>,
+  <a class="Xr">rgbfix(1)</a>, <a class="Xr">rgbds(5)</a>,
-  <a class="Xr" title="Xr">rgbds(7)</a>
+  <a class="Xr">rgbds(7)</a>
-<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
+</section>
-<b class="Nm" title="Nm">rgblink</b> was originally written by Carsten
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
+<code class="Nm">rgblink</code> was originally written by Carsten
   S&#x00F8;rensen as part of the ASMotor package, and was later packaged in
   RGBDS by Justin Lloyd. It is now maintained by a number of contributors at
-  <a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</div>
+  <a class="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.
+</section>
+</div>
 <table class="foot">
   <tr>
     <td class="foot-date">January 26, 2018</td>

docs/rgblink.5.html

@@ -1,13 +1,14 @@
 <!DOCTYPE html>
 <html>
+<!-- This is an automatically generated file.  Do not edit.
+   This file is part of RGBDS.
+  
+   Copyright (c) 2017-2018, Antonio Nino Diaz and RGBDS contributors.
+  
+   SPDX-License-Identifier: MIT
+   -->
 <head>
   <meta charset="utf-8"/>
-  <style>
-    table.head, table.foot { width: 100%; }
-    td.head-rtitle, td.foot-os { text-align: right; }
-    td.head-vol { text-align: center; }
-    div.Pp { margin: 1ex 0ex; }
-  </style>
   <link rel="stylesheet" href="mandoc.css" type="text/css" media="all"/>
   <title>RGBLINK(5)</title>
 </head>
@@ -20,23 +21,24 @@
   </tr>
 </table>
 <div class="manual-text">
-<h1 class="Sh" title="Sh" id="NAME"><a class="selflink" href="#NAME">NAME</a></h1>
+<section class="Sh">
-<b class="Nm" title="Nm">rgblink</b> &#x2014;
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-  <span class="Nd" title="Nd">linkerscript file format</span>
+<code class="Nm">rgblink</code> &#x2014;
-<h1 class="Sh" title="Sh" id="DESCRIPTION"><a class="selflink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<div class="Nd">linkerscript file format</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
 The linkerscript is an external file that allows the user to specify the order
   of sections without the need for doing so before assembling each object file.
-<div class="Pp"></div>
+<p class="Pp">The placement of sections specified in the linkerscript is done
-The placement of sections specified in the linkerscript is done before the
+    before the sections whose placement is defined in the source code.</p>
-  sections whose placement is defined in the source code.
+<p class="Pp">A linkerscript consists on a series of banks followed by a list of
-<div class="Pp"></div>
+    sections and, optionally, commands. They can be lowercase or uppercase, it
-A linkerscript consists on a series of banks followed by a list of sections and,
+    is ignored. Any line can contain a comment starting with
-  optionally, commands. They can be lowercase or uppercase, it is ignored. Any
+    &#x2018;<code class="Li">;</code>&#x2019; that ends at the end of the
-  line can contain a comment starting with
+  line:</p>
-  &#x2018;<code class="Li">;</code>&#x2019; that ends at the end of the line:
+<div class="Bd Pp Bd-indent">
-<div class="Pp"></div>
+<pre>
-<div class="Bd" style="margin-left: 5.00ex;">
-<pre class="Li">
 ROMX $F ; This is a comment
   &quot;Functions to read array&quot;
   ALIGN 8
@@ -46,55 +48,53 @@ WRAMX 2
   &quot;Some variables&quot;
 </pre>
 </div>
-<div class="Pp"></div>
+<p class="Pp">Numbers can be in decimal or hexadecimal format (the prefix is
-Numbers can be in decimal or hexadecimal format (the prefix is
+    &#x2018;<code class="Li">$</code>&#x2019;). It is an error if any section
-  &#x2018;<code class="Li">$</code>&#x2019;). It is an error if any section name
+    name or command are found before setting a bank.</p>
-  or command are found before setting a bank.
+<p class="Pp">Files can be included by using the <var class="Ar">INCLUDE</var>
-<div class="Pp"></div>
-Files can be included by using the <var class="Ar" title="Ar">INCLUDE</var>
     keyword followed by a string with the path of the file that has to be
-  included.
+    included.</p>
-<div class="Pp"></div>
+<p class="Pp">The possible bank types are: <b class="Sy">ROM0</b>,
-The possible bank types are: <b class="Sy" title="Sy">ROM0</b>,
+    <b class="Sy">ROMX</b>, <b class="Sy">VRAM</b>, <b class="Sy">WRAM0</b>,
-  <b class="Sy" title="Sy">ROMX</b>, <b class="Sy" title="Sy">VRAM</b>,
+    <b class="Sy">WRAMX</b>, <b class="Sy">OAM</b> and <b class="Sy">HRAM</b>.
-  <b class="Sy" title="Sy">WRAM0</b>, <b class="Sy" title="Sy">WRAMX</b>,
+    Types <b class="Sy">ROMX</b>, <b class="Sy">VRAM</b>,
-  <b class="Sy" title="Sy">OAM</b> and <b class="Sy" title="Sy">HRAM</b>. Types
+    <b class="Sy">WRAMX</b> and <b class="Sy">SRAM</b> are banked, which means
-  <b class="Sy" title="Sy">ROMX</b>, <b class="Sy" title="Sy">VRAM</b>,
+    that it is needed to specify a bank after the type.</p>
-  <b class="Sy" title="Sy">WRAMX</b> and <b class="Sy" title="Sy">SRAM</b> are
+<p class="Pp">When a new bank statement is found, sections found after it will
-  banked, which means that it is needed to specify a bank after the type.
+    be placed right from the beginning of that bank. If the linkerscript
-<div class="Pp"></div>
+    switches to a different bank and then it comes back to the previous one it
-When a new bank statement is found, sections found after it will be placed right
+    will continue from the last address that was used.</p>
-  from the beginning of that bank. If the linkerscript switches to a different
+<p class="Pp">The only two commands are <var class="Ar">ORG</var> and
-  bank and then it comes back to the previous one it will continue from the last
+    <var class="Ar">ALIGN</var>:</p>
-  address that was used.
-<div class="Pp"></div>
-The only two commands are <var class="Ar" title="Ar">ORG</var> and
-  <var class="Ar" title="Ar">ALIGN</var>:
 <ul class="Bl-bullet">
-  <li class="It-bullet"><var class="Ar" title="Ar">ORG</var> sets the address in
+  <li><var class="Ar">ORG</var> sets the address in which new sections will be
-      which new sections will be placed. It can not be lower than the current
+      placed. It can not be lower than the current address.</li>
-      address.</li>
+  <li><var class="Ar">ALIGN</var> will increase the address until it is aligned
-  <li class="It-bullet"><var class="Ar" title="Ar">ALIGN</var> will increase the
+      to the specified boundary (it tries to set to 0 the number of bits
-      address until it is aligned to the specified boundary (it tries to set to
+      specified after the command: <b class="Sy">ALIGN 8</b> will align to
-      0 the number of bits specified after the command:
+      $100).</li>
-      <b class="Sy" title="Sy">ALIGN 8</b> will align to $100).</li>
 </ul>
-<div class="Pp"></div>
+<p class="Pp">Note: The bank, alignment, address and type of sections can be
-Note: The bank, alignment, address and type of sections can be specified both in
+    specified both in the source code and in the linkerscript. For a section to
-  the source code and in the linkerscript. For a section to be able to be placed
+    be able to be placed with the linkerscript the bank must be left unassigned
-  with the linkerscript the bank must be left unassigned in the source code or
+    in the source code or be the same as the one specified in the linkerscript.
-  be the same as the one specified in the linkerscript. The address and
+    The address and alignment musn't be set.</p>
-  alignment musn't be set.
+</section>
-<h1 class="Sh" title="Sh" id="SEE_ALSO"><a class="selflink" href="#SEE_ALSO">SEE
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
   ALSO</a></h1>
-<a class="Xr" title="Xr">rgbasm(1)</a>, <a class="Xr" title="Xr">rgblink(1)</a>,
+<a class="Xr">rgbasm(1)</a>, <a class="Xr">rgblink(1)</a>,
-  <a class="Xr" title="Xr">rgbfix(1)</a>, <a class="Xr" title="Xr">rgbds(5)</a>,
+  <a class="Xr">rgbfix(1)</a>, <a class="Xr">rgbds(5)</a>,
-  <a class="Xr" title="Xr">rgbds(7)</a>
+  <a class="Xr">rgbds(7)</a>
-<h1 class="Sh" title="Sh" id="HISTORY"><a class="selflink" href="#HISTORY">HISTORY</a></h1>
+</section>
-<b class="Nm" title="Nm">rgblink</b> was originally written by Carsten
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
+<code class="Nm">rgblink</code> was originally written by Carsten
   S&#x00F8;rensen as part of the ASMotor package, and was later packaged in
   RGBDS by Justin Lloyd. It is now maintained by a number of contributors at
-  <a class="Lk" title="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.</div>
+  <a class="Lk" href="https://github.com/rednex/rgbds">https://github.com/rednex/rgbds</a>.
+</section>
+</div>
 <table class="foot">
   <tr>
     <td class="foot-date">January 27, 2018</td>

include/asm/asm.h

@@ -28,7 +28,6 @@
 extern int32_t nLineNo;
 extern uint32_t nTotalLines;
 extern uint32_t nPC;
-extern uint32_t nPass;
 extern uint32_t nIFDepth;
 extern bool skipElif;
 extern uint32_t nUnionDepth;
@@ -40,6 +39,7 @@ extern struct sSymbol *tHashedSymbols[HASHSIZE];
 extern struct sSymbol *pPCSymbol;
 extern bool oDontExpandStrings;
 
-size_t symvaluetostring(char *dest, size_t maxLength, char *sym);
+size_t symvaluetostring(char *dest, size_t maxLength, char *sym,
+			const char *mode);
 
 #endif /* RGBDS_ASM_ASM_H */

include/asm/charmap.h

@@ -13,14 +13,30 @@
 
 #define MAXCHARMAPS	512
 #define CHARMAPLENGTH	16
+#define MAXCHARNODES	(MAXCHARMAPS * CHARMAPLENGTH + 1)
 
-struct Charmap {
+/*
-	int32_t count;
+ * A node for trie structure.
-	char input[MAXCHARMAPS][CHARMAPLENGTH + 1];
+ */
-	char output[MAXCHARMAPS];
+struct Charnode {
+	uint8_t code; /* the value in a key-value pair. */
+	uint8_t isCode; /* has one if it's a code node, not just a bridge node. */
+	struct Charnode *next[256]; /* each index representing the next possible character from its current state. */
 };
 
-int32_t readUTF8Char(char *destination, char *source);
+struct Charmap {
+	char name[MAXSYMLEN + 1];
+	int32_t charCount; /* user-side count. */
+	int32_t nodeCount; /* node-side count. */
+	struct Charnode nodes[MAXCHARNODES]; /* first node is reserved for the root node in charmap. */
+	struct Charmap *next; /* next charmap in hash table bucket */
+};
+
+void charmap_InitMain(void);
+struct Charmap *charmap_New(const char *name, const char *baseName);
+void charmap_Set(const char *name);
+void charmap_Push(void);
+void charmap_Pop(void);
 int32_t charmap_Add(char *input, uint8_t output);
 int32_t charmap_Convert(char **input);
 

include/asm/fstack.h

@@ -33,15 +33,20 @@ struct sContext {
 	char *pREPTBlock;
 	uint32_t nREPTBlockCount;
 	uint32_t nREPTBlockSize;
+	int32_t nREPTBodyFirstLine;
+	int32_t nREPTBodyLastLine;
 };
 
+extern unsigned int nMaxRecursionDepth;
+
 void fstk_RunInclude(char *tzFileName);
 void fstk_RunMacroArg(int32_t s);
 void fstk_Init(char *s);
 void fstk_Dump(void);
+void fstk_DumpStringExpansions(void);
 void fstk_AddIncludePath(char *s);
 uint32_t fstk_RunMacro(char *s);
-void fstk_RunRept(uint32_t count);
+void fstk_RunRept(uint32_t count, int32_t nReptLineNo);
 FILE *fstk_FindFile(char *fname, char **incPathUsed);
 int32_t fstk_GetLine(void);
 

include/asm/lexer.h

@@ -31,7 +31,7 @@ struct yy_buffer_state {
 	/* Address where the data is initially written after a safety margin */
 	char *pBufferStart;
 	char *pBuffer;
-	uint32_t nBufferSize;
+	size_t nBufferSize;
 	uint32_t oAtLineStart;
 };
 
@@ -40,6 +40,13 @@ enum eLexerState {
 	LEX_STATE_MACROARGS
 };
 
+struct sStringExpansionPos {
+	char *tzName;
+	char *pBuffer;
+	char *pBufferPos;
+	struct sStringExpansionPos *pParent;
+};
+
 #define INITIAL		0
 #define macroarg	3
 
@@ -62,14 +69,16 @@ void lex_FloatDeleteSecondRange(uint32_t id, uint16_t start, uint16_t end);
 void lex_Init(void);
 void lex_AddStrings(const struct sLexInitString *lex);
 void lex_SetBuffer(char *buffer, uint32_t len);
+void lex_BeginStringExpansion(const char *tzName);
 int yywrap(void);
-uint32_t yylex(void);
+int yylex(void);
 void yyunput(char c);
-void yyunputstr(char *s);
+void yyunputstr(const char *s);
 void yyskipbytes(uint32_t count);
 void yyunputbytes(uint32_t count);
 
 extern YY_BUFFER_STATE pCurrentBuffer;
+extern struct sStringExpansionPos *pCurrentStringExpansion;
 
 void upperstring(char *s);
 void lowerstring(char *s);

include/asm/main.h

@@ -11,6 +11,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdio.h>
 
 #include "helpers.h"
 

include/asm/output.h

@@ -40,6 +40,7 @@ void out_AbsByteGroup(char *s, int32_t length);
 void out_RelByte(struct Expression *expr);
 void out_RelWord(struct Expression *expr);
 void out_PCRelByte(struct Expression *expr);
+void out_CheckErrors(void);
 void out_WriteObject(void);
 void out_Skip(int32_t skip);
 void out_BinaryFile(char *s);

include/asm/rpn.h

@@ -11,17 +11,19 @@
 
 #include <stdint.h>
 
+#define MAXRPNLEN 1048576
+
 struct Expression {
 	int32_t  nVal;
-	uint8_t  tRPN[256];
+	uint8_t  *tRPN;
+	uint32_t nRPNCapacity;
 	uint32_t nRPNLength;
+	uint32_t nRPNPatchSize;
 	uint32_t nRPNOut;
 	uint32_t isReloc;
-	uint32_t isPCRel;
 };
 
 uint32_t rpn_isReloc(const struct Expression *expr);
-uint32_t rpn_isPCRelative(const struct Expression *expr);
 void rpn_Symbol(struct Expression *expr, char *tzSym);
 void rpn_Number(struct Expression *expr, uint32_t i);
 void rpn_LOGNOT(struct Expression *expr, const struct Expression *src);
@@ -69,7 +71,8 @@ uint16_t rpn_PopByte(struct Expression *expr);
 void rpn_BankSymbol(struct Expression *expr, char *tzSym);
 void rpn_BankSection(struct Expression *expr, char *tzSectionName);
 void rpn_BankSelf(struct Expression *expr);
-void rpn_Reset(struct Expression *expr);
+void rpn_Init(struct Expression *expr);
+void rpn_Free(struct Expression *expr);
 void rpn_CheckHRAM(struct Expression *expr, const struct Expression *src);
 
 #endif /* RGBDS_ASM_RPN_H */

include/asm/symbol.h

@@ -38,8 +38,8 @@ struct sSymbol {
 #define SYMF_SET	0x004
 /* Symbol should be exported */
 #define SYMF_EXPORT	0x008
-/* Symbol is imported, it's value is unknown */
+/* Symbol referenced in RPN expression */
-#define SYMF_IMPORT	0x010
+#define SYMF_REF	0x010
 /* Symbol is a local symbol */
 #define SYMF_LOCAL	0x020
 /* Symbol has been defined, not only referenced */
@@ -51,10 +51,8 @@ struct sSymbol {
 /* Symbol has a constant value, will not be changed during linking */
 #define SYMF_CONST	0x200
 
-uint32_t calchash(char *s);
+uint32_t sym_CalcHash(const char *s);
 void sym_SetExportAll(uint8_t set);
-void sym_PrepPass1(void);
-void sym_PrepPass2(void);
 void sym_AddLocalReloc(char *tzSym);
 void sym_AddReloc(char *tzSym);
 void sym_Export(char *tzSym);
@@ -65,23 +63,21 @@ void sym_AddNewMacroArg(char *s);
 void sym_SaveCurrentMacroArgs(char *save[]);
 void sym_RestoreCurrentMacroArgs(char *save[]);
 void sym_UseNewMacroArgs(void);
-void sym_FreeCurrentMacroArgs(void);
 void sym_AddEqu(char *tzSym, int32_t value);
 void sym_AddSet(char *tzSym, int32_t value);
 void sym_Init(void);
 uint32_t sym_GetConstantValue(char *s);
 uint32_t sym_isConstant(char *s);
 struct sSymbol *sym_FindSymbol(char *tzName);
-void sym_Global(char *tzSym);
 char *sym_FindMacroArg(int32_t i);
 char *sym_GetStringValue(char *tzSym);
 void sym_UseCurrentMacroArgs(void);
 void sym_SetMacroArgID(uint32_t nMacroCount);
 uint32_t sym_isString(char *tzSym);
-void sym_AddMacro(char *tzSym);
+void sym_AddMacro(char *tzSym, int32_t nDefLineNo);
+void sym_Ref(char *tzSym);
 void sym_ShiftCurrentMacroArgs(void);
 void sym_AddString(char *tzSym, char *tzValue);
-uint32_t sym_GetValue(char *s);
 uint32_t sym_GetDefinedValue(char *s);
 uint32_t sym_isDefined(char *tzName);
 void sym_Purge(char *tzName);

include/asm/util.h

@@ -0,0 +1,17 @@
+/*
+ * This file is part of RGBDS.
+ *
+ * Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#ifndef RGBDS_UTIL_H
+#define RGBDS_UTIL_H
+
+#include <stdint.h>
+
+uint32_t calchash(const char *s);
+int32_t readUTF8Char(char *dest, char *src);
+
+#endif /* RGBDS_UTIL_H */

include/gfx/gb.h

@@ -12,14 +12,24 @@
 #include <stdint.h>
 #include "gfx/main.h"
 
+#define XFLIP 0x40
+#define YFLIP 0x20
+
 void raw_to_gb(const struct RawIndexedImage *raw_image, struct GBImage *gb);
 void output_file(const struct Options *opts, const struct GBImage *gb);
 int get_tile_index(uint8_t *tile, uint8_t **tiles, int num_tiles,
 		   int tile_size);
-void create_tilemap(const struct Options *opts, struct GBImage *gb,
+uint8_t reverse_bits(uint8_t b);
-		    struct Tilemap *tilemap);
+void xflip(uint8_t *tile, uint8_t *tile_xflip, int tile_size);
+void yflip(uint8_t *tile, uint8_t *tile_yflip, int tile_size);
+int get_mirrored_tile_index(uint8_t *tile, uint8_t **tiles, int num_tiles,
+			    int tile_size, int *flags);
+void create_mapfiles(const struct Options *opts, struct GBImage *gb,
+		     struct Mapfile *tilemap, struct Mapfile *attrmap);
 void output_tilemap_file(const struct Options *opts,
-			 const struct Tilemap *tilemap);
+			 const struct Mapfile *tilemap);
+void output_attrmap_file(const struct Options *opts,
+			 const struct Mapfile *attrmap);
 void output_palette_file(const struct Options *opts,
 			 const struct RawIndexedImage *raw_image);
 

include/gfx/main.h

@@ -21,10 +21,14 @@ struct Options {
 	bool hardfix;
 	bool fix;
 	bool horizontal;
+	bool mirror;
 	bool unique;
+	bool colorcurve;
 	int trim;
-	char *mapfile;
+	char *tilemapfile;
-	bool mapout;
+	bool tilemapout;
+	char *attrmapfile;
+	bool attrmapout;
 	char *palfile;
 	bool palout;
 	char *outfile;
@@ -40,8 +44,10 @@ struct RGBColor {
 struct ImageOptions {
 	bool horizontal;
 	int trim;
-	char *mapfile;
+	char *tilemapfile;
-	bool mapout;
+	bool tilemapout;
+	char *attrmapfile;
+	bool attrmapout;
 	char *palfile;
 	bool palout;
 };
@@ -71,7 +77,7 @@ struct GBImage {
 	int trim;
 };
 
-struct Tilemap {
+struct Mapfile {
 	uint8_t *data;
 	int size;
 };

include/link/symbol.h

@@ -15,7 +15,7 @@ void sym_Init(void);
 void sym_CreateSymbol(char *tzName, int32_t nValue, int32_t nBank,
 		      char *tzObjFileName, char *tzFileName,
 		      uint32_t nFileLine);
-int32_t sym_GetValue(char *tzName);
+int32_t sym_GetValue(struct sPatch *pPatch, char *tzName);
-int32_t sym_GetBank(char *tzName);
+int32_t sym_GetBank(struct sPatch *pPatch, char *tzName);
 
 #endif /* RGBDS_LINK_SYMBOL_H */

include/version.h

@@ -11,7 +11,7 @@
 
 #define PACKAGE_VERSION_MAJOR (0)
 #define PACKAGE_VERSION_MINOR (3)
-#define PACKAGE_VERSION_PATCH (8)
+#define PACKAGE_VERSION_PATCH (10)
 
 const char *get_package_version_string(void);
 

src/asm/asmy.y

@@ -1,7 +1,7 @@
 /*
  * This file is part of RGBDS.
  *
- * Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors.
+ * Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
  *
  * SPDX-License-Identifier: MIT
  */
@@ -9,6 +9,7 @@
 %{
 #include <ctype.h>
 #include <errno.h>
+#include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -25,6 +26,9 @@
 #include "asm/output.h"
 #include "asm/rpn.h"
 #include "asm/symbol.h"
+#include "asm/util.h"
+
+#include "extern/utf8decoder.h"
 
 #include "common.h"
 #include "linkdefs.h"
@@ -73,7 +77,8 @@ static void bankrangecheck(char *name, uint32_t secttype, int32_t org,
 	out_NewAbsSection(name, secttype, org, bank);
 }
 
-size_t symvaluetostring(char *dest, size_t maxLength, char *sym)
+size_t symvaluetostring(char *dest, size_t maxLength, char *sym,
+			const char *mode)
 {
 	size_t length;
 
@@ -81,6 +86,9 @@ size_t symvaluetostring(char *dest, size_t maxLength, char *sym)
 		char *src = sym_GetStringValue(sym);
 		size_t i;
 
+		if (mode)
+			yyerror("Print types are only allowed for numbers");
+
 		for (i = 0; src[i] != 0; i++) {
 			if (i >= maxLength)
 				fatalerror("Symbol value too long to fit buffer");
@@ -92,8 +100,25 @@ size_t symvaluetostring(char *dest, size_t maxLength, char *sym)
 
 	} else {
 		uint32_t value = sym_GetConstantValue(sym);
-		int32_t fullLength = snprintf(dest, maxLength + 1, "$%X",
+		int32_t fullLength;
+
+		/* Special cheat for binary */
+		if (mode && !mode[0]) {
+			char binary[33]; /* 32 bits + 1 terminator */
+			char *write_ptr = binary + 32;
+			fullLength = 0;
+			binary[32] = 0;
+			do {
+				*(--write_ptr) = (value & 1) + '0';
+				value >>= 1;
+				fullLength++;
+			} while(value);
+			strncpy(dest, write_ptr, maxLength + 1);
+		} else {
+			fullLength = snprintf(dest, maxLength + 1,
+							  mode ? : "$%X",
 						      value);
+		}
 
 		if (fullLength < 0) {
 			fatalerror("snprintf encoding error");
@@ -249,14 +274,13 @@ static void copymacro(void)
 	src = pCurrentBuffer->pBuffer;
 	ulNewMacroSize = len;
 
-	tzNewMacro = (char *)malloc(ulNewMacroSize+2);
+	tzNewMacro = (char *)malloc(ulNewMacroSize + 1);
 	if (tzNewMacro == NULL)
 		fatalerror("Not enough memory for MACRO definition.");
 
 	uint32_t i;
 
-	tzNewMacro[ulNewMacroSize] = '\n';
+	tzNewMacro[ulNewMacroSize] = 0;
-	tzNewMacro[ulNewMacroSize+1] = 0;
 	for (i = 0; i < ulNewMacroSize; i += 1) {
 		tzNewMacro[i] = src[i];
 		if (src[i] == '\n')
@@ -266,16 +290,21 @@ static void copymacro(void)
 	yyskipbytes(ulNewMacroSize + 4);
 }
 
+static bool endsIf(char c)
+{
+	return isWhiteSpace(c) || c == '(' || c == '{';
+}
+
 static uint32_t isIf(char *s)
 {
 	return (strncasecmp(s, "IF", 2) == 0)
-		&& isWhiteSpace(s[-1]) && isWhiteSpace(s[2]);
+		&& isWhiteSpace(s[-1]) && endsIf(s[2]);
 }
 
 static uint32_t isElif(char *s)
 {
 	return (strncasecmp(s, "ELIF", 4) == 0)
-		&& isWhiteSpace(s[-1]) && isWhiteSpace(s[4]);
+		&& isWhiteSpace(s[-1]) && endsIf(s[4]);
 }
 
 static uint32_t isElse(char *s)
@@ -324,20 +353,14 @@ static void if_skip_to_else(void)
 				src++;
 			}
 		} else {
-			switch (*src) {
+			if (*src == '\"') {
-			case '\\':
-				src += 2;
-				break;
-
-			case '\"':
-				src += 2;
 				inString = false;
-				break;
+			} else if (*src == '\\') {
-
+				/* Escaped quotes don't end the string */
-			default:
+				if (*++src != '\"')
-				src++;
+					src--;
-				break;
 			}
+			src++;
 		}
 	}
 
@@ -375,21 +398,14 @@ static void if_skip_to_endc(void)
 				src++;
 			}
 		} else {
-			switch (*src) {
+			if (*src == '\"') {
-
-			case '\\':
-				src += 2;
-				break;
-
-			case '\"':
-				src++;
 				inString = false;
-				break;
+			} else if (*src == '\\') {
-
+				/* Escaped quotes don't end the string */
-			default:
+				if (*++src != '\"')
-				src++;
+					src--;
-				break;
 			}
+			src++;
 		}
 	}
 
@@ -431,6 +447,85 @@ static void updateUnion(void)
 	pPCSymbol->nValue = unionStart[unionIndex];
 }
 
+static size_t strlenUTF8(const char *s)
+{
+	size_t len = 0;
+	uint32_t state = 0;
+	uint32_t codep = 0;
+
+	while (*s) {
+		switch (decode(&state, &codep, (uint8_t)*s)) {
+		case 1:
+			fatalerror("STRLEN: Invalid UTF-8 character");
+			break;
+		case 0:
+			len++;
+			break;
+		}
+		s++;
+	}
+
+	/* Check for partial code point. */
+	if (state != 0)
+		fatalerror("STRLEN: Invalid UTF-8 character");
+
+	return len;
+}
+
+static void strsubUTF8(char *dest, const char *src, uint32_t pos, uint32_t len)
+{
+	size_t srcIndex = 0;
+	size_t destIndex = 0;
+	uint32_t state = 0;
+	uint32_t codep = 0;
+	uint32_t curPos = 1;
+	uint32_t curLen = 0;
+
+	if (pos < 1) {
+		warning("STRSUB: Position starts at 1");
+		pos = 1;
+	}
+
+	/* Advance to starting position in source string. */
+	while (src[srcIndex] && curPos < pos) {
+		switch (decode(&state, &codep, (uint8_t)src[srcIndex])) {
+		case 1:
+			fatalerror("STRSUB: Invalid UTF-8 character");
+			break;
+		case 0:
+			curPos++;
+			break;
+		}
+		srcIndex++;
+	}
+
+	if (!src[srcIndex])
+		warning("STRSUB: Position %lu is past the end of the string",
+			(unsigned long)pos);
+
+	/* Copy from source to destination. */
+	while (src[srcIndex] && destIndex < MAXSTRLEN && curLen < len) {
+		switch (decode(&state, &codep, (uint8_t)src[srcIndex])) {
+		case 1:
+			fatalerror("STRSUB: Invalid UTF-8 character");
+			break;
+		case 0:
+			curLen++;
+			break;
+		}
+		dest[destIndex++] = src[srcIndex++];
+	}
+
+	if (curLen < len)
+		warning("STRSUB: Length too big: %lu", (unsigned long)len);
+
+	/* Check for partial code point. */
+	if (state != 0)
+		fatalerror("STRSUB: Invalid UTF-8 character");
+
+	dest[destIndex] = 0;
+}
+
 %}
 
 %union
@@ -456,8 +551,8 @@ static void updateUnion(void)
 %token	<tzString>	T_STRING
 
 %left	<nConstValue>	T_OP_LOGICNOT
-%left	<nConstValue>	T_OP_LOGICOR T_OP_LOGICAND T_OP_LOGICEQU
+%left	<nConstValue>	T_OP_LOGICOR T_OP_LOGICAND
-%left	<nConstValue>	T_OP_LOGICGT T_OP_LOGICLT T_OP_LOGICGE T_OP_LOGICLE T_OP_LOGICNE
+%left	<nConstValue>	T_OP_LOGICGT T_OP_LOGICLT T_OP_LOGICGE T_OP_LOGICLE T_OP_LOGICNE T_OP_LOGICEQU
 %left	<nConstValue>	T_OP_ADD T_OP_SUB
 %left	<nConstValue>	T_OP_OR T_OP_XOR T_OP_AND
 %left	<nConstValue>	T_OP_SHL T_OP_SHR
@@ -510,6 +605,10 @@ static void updateUnion(void)
 %token	T_POP_UNION T_POP_NEXTU T_POP_ENDU
 %token	T_POP_INCBIN T_POP_REPT
 %token	T_POP_CHARMAP
+%token	T_POP_NEWCHARMAP
+%token	T_POP_SETCHARMAP
+%token	T_POP_PUSHC
+%token	T_POP_POPC
 %token	T_POP_SHIFT
 %token	T_POP_ENDR
 %token	T_POP_FAIL
@@ -663,6 +762,10 @@ simple_pseudoop : include
 		| endu
 		| incbin
 		| charmap
+		| newcharmap
+		| setcharmap
+		| pushc
+		| popc
 		| rept
 		| shift
 		| fail
@@ -712,15 +815,17 @@ shift		: T_POP_SHIFT		{ sym_ShiftCurrentMacroArgs(); }
 
 rept		: T_POP_REPT uconst
 		{
+			uint32_t nDefinitionLineNo = nLineNo;
 			copyrept();
-			fstk_RunRept($2);
+			fstk_RunRept($2, nDefinitionLineNo);
 		}
 ;
 
 macrodef	: T_LABEL ':' T_POP_MACRO
 		{
+			int32_t nDefinitionLineNo = nLineNo;
 			copymacro();
-			sym_AddMacro($1);
+			sym_AddMacro($1, nDefinitionLineNo);
 		}
 ;
 
@@ -799,7 +904,7 @@ ds		: T_POP_DS uconst
 ;
 
 db		: T_POP_DB constlist_8bit_entry comma constlist_8bit {
-			if ((nPass == 1) && (nListCountEmpty > 0)) {
+			if (nListCountEmpty > 0) {
 				warning("Empty entry in list of 8-bit elements (treated as 0).");
 			}
 		}
@@ -807,7 +912,7 @@ db		: T_POP_DB constlist_8bit_entry comma constlist_8bit {
 ;
 
 dw		: T_POP_DW constlist_16bit_entry comma constlist_16bit {
-			if ((nPass == 1) && (nListCountEmpty > 0)) {
+			if (nListCountEmpty > 0) {
 				warning("Empty entry in list of 16-bit elements (treated as 0).");
 			}
 		}
@@ -815,7 +920,7 @@ dw		: T_POP_DW constlist_16bit_entry comma constlist_16bit {
 ;
 
 dl		: T_POP_DL constlist_32bit_entry comma constlist_32bit {
-			if ((nPass == 1) && (nListCountEmpty > 0)) {
+			if (nListCountEmpty > 0) {
 				warning("Empty entry in list of 32-bit elements (treated as 0).");
 			}
 		}
@@ -852,7 +957,6 @@ import_list_entry : T_ID
 			 * This is done automatically if the label isn't found
 			 * in the list of defined symbols.
 			 */
-			if (nPass == 1)
 			warning("IMPORT is a deprecated keyword with no effect: %s", $1);
 		}
 ;
@@ -879,7 +983,7 @@ global_list	: global_list_entry
 
 global_list_entry : T_ID
 		{
-			sym_Global($1);
+			sym_Export($1);
 		}
 ;
 
@@ -927,30 +1031,48 @@ charmap		: T_POP_CHARMAP string comma string
 		}
 ;
 
+newcharmap	: T_POP_NEWCHARMAP T_ID
+		{
+			charmap_New($2, NULL);
+		}
+		| T_POP_NEWCHARMAP T_ID comma T_ID
+		{
+			charmap_New($2, $4);
+		}
+;
+
+setcharmap	: T_POP_SETCHARMAP T_ID
+		{
+			charmap_Set($2);
+		}
+;
+
+pushc		: T_POP_PUSHC	{ charmap_Push(); }
+;
+
+popc		: T_POP_POPC	{ charmap_Pop(); }
+;
+
 printt		: T_POP_PRINTT string
 		{
-			if (nPass == 1)
 			printf("%s", $2);
 		}
 ;
 
 printv		: T_POP_PRINTV const
 		{
-			if (nPass == 1)
 			printf("$%X", constexpr_GetConstantValue(&$2));
 		}
 ;
 
 printi		: T_POP_PRINTI const
 		{
-			if (nPass == 1)
 			printf("%d", constexpr_GetConstantValue(&$2));
 		}
 ;
 
 printf		: T_POP_PRINTF const
 		{
-			if (nPass == 1)
 			math_Print(constexpr_GetConstantValue(&$2));
 		}
 ;
@@ -1126,20 +1248,17 @@ relocconst	: T_ID
 				struct Expression sTemp, sOffset;
 
 				rpn_Symbol(&sTemp, $1);
-				sTemp.nVal = sym_GetValue($1);
 
 				rpn_Number(&sOffset, nPCOffset);
 
 				rpn_SUB(&$$, &sTemp, &sOffset);
 			} else {
 				rpn_Symbol(&$$, $1);
-				$$.nVal = sym_GetValue($1);
 			}
 		}
 		| T_NUMBER
 		{
 			rpn_Number(&$$, $1);
-			$$.nVal = $1;
 		}
 		| string
 		{
@@ -1149,7 +1268,6 @@ relocconst	: T_ID
 
 			free(s);
 			rpn_Number(&$$, r);
-			$$.nVal = r;
 		}
 		| T_OP_LOGICNOT relocconst %prec NEG	{ rpn_LOGNOT(&$$, &$2); }
 		| relocconst T_OP_LOGICOR relocconst	{ rpn_LOGOR(&$$, &$1, &$3); }
@@ -1179,12 +1297,10 @@ relocconst	: T_ID
 		{
 			/* '@' is also a T_ID, it is handled here. */
 			rpn_BankSymbol(&$$, $3);
-			$$.nVal = 0;
 		}
 		| T_OP_BANK '(' string ')'
 		{
 			rpn_BankSection(&$$, $3);
-			$$.nVal = 0;
 		}
 		| T_OP_DEF {
 				oDontExpandStrings = true;
@@ -1260,7 +1376,7 @@ relocconst	: T_ID
 			else
 				rpn_Number(&$$, 0);
 		}
-		| T_OP_STRLEN '(' string ')'		{ rpn_Number(&$$, strlen($3)); }
+		| T_OP_STRLEN '(' string ')'		{ rpn_Number(&$$, strlenUTF8($3)); }
 		| '(' relocconst ')'			{ $$ = $2; }
 ;
 
@@ -1338,7 +1454,7 @@ const		: T_ID					{ constexpr_Symbol(&$$, $1); }
 			else
 				constexpr_Number(&$$, 0);
 		}
-		| T_OP_STRLEN '(' string ')'		{ constexpr_Number(&$$, strlen($3)); }
+		| T_OP_STRLEN '(' string ')'		{ constexpr_Number(&$$, strlenUTF8($3)); }
 		| '(' const ')'				{ $$ = $2; }
 ;
 
@@ -1349,14 +1465,7 @@ string		: T_STRING
 		}
 		| T_OP_STRSUB '(' string comma uconst comma uconst ')'
 		{
-			uint32_t len = $7;
+			strsubUTF8($$, $3, $5, $7);
-			if (len > MAXSTRLEN) {
-				warning("STRSUB: Length too big: %u", len);
-				len = MAXSTRLEN;
-			}
-
-			if (snprintf($$, len + 1, "%s", $3 + $5 - 1) > MAXSTRLEN)
-				warning("STRSUB: String too long '%s'", $$);
 		}
 		| T_OP_STRCAT '(' string comma string ')'
 		{
@@ -1637,7 +1746,6 @@ z80_jp		: T_Z80_JP const_16bit
 		| T_Z80_JP T_MODE_HL_IND
 		{
 			out_AbsByte(0xE9);
-			if (nPass == 1)
 			warning("'JP [HL]' is obsolete, use 'JP HL' instead.");
 		}
 		| T_Z80_JP T_MODE_HL
@@ -1665,7 +1773,6 @@ z80_ldi		: T_Z80_LDI T_MODE_HL_IND comma T_MODE_A
 		| T_Z80_LDI T_MODE_A comma T_MODE_HL
 		{
 			out_AbsByte(0x0A | (2 << 4));
-			if (nPass == 1)
 			warning("'LDI A,HL' is obsolete, use 'LDI A,[HL]' or 'LD A,[HL+] instead.");
 		}
 		| T_Z80_LDI T_MODE_A comma T_MODE_HL_IND
@@ -1681,7 +1788,6 @@ z80_ldd		: T_Z80_LDD T_MODE_HL_IND comma T_MODE_A
 		| T_Z80_LDD T_MODE_A comma T_MODE_HL
 		{
 			out_AbsByte(0x0A | (3 << 4));
-			if (nPass == 1)
 			warning("'LDD A,HL' is obsolete, use 'LDD A,[HL]' or 'LD A,[HL-] instead.");
 		}
 		| T_Z80_LDD T_MODE_A comma T_MODE_HL_IND
@@ -1772,6 +1878,7 @@ z80_ld_mem	: T_Z80_LD op_mem_ind comma T_MODE_SP
 			    (!rpn_isReloc(&$2)) && ($2.nVal >= 0xFF00)) {
 				out_AbsByte(0xE0);
 				out_AbsByte($2.nVal & 0xFF);
+				rpn_Free(&$2);
 			} else {
 				out_AbsByte(0xEA);
 				out_RelWord(&$2);
@@ -1826,12 +1933,14 @@ z80_ld_a	: T_Z80_LD reg_r comma T_MODE_C_IND
 				    (!rpn_isReloc(&$4)) && ($4.nVal >= 0xFF00)) {
 					out_AbsByte(0xF0);
 					out_AbsByte($4.nVal & 0xFF);
+					rpn_Free(&$4);
 				} else {
 					out_AbsByte(0xFA);
 					out_RelWord(&$4);
 				}
 			} else {
 				yyerror("Destination operand must be A");
+				rpn_Free(&$4);
 			}
 		}
 ;
@@ -1964,6 +2073,7 @@ z80_rst		: T_Z80_RST const_8bit
 				yyerror("Invalid address $%x for RST", $2.nVal);
 			else
 				out_AbsByte(0xC7 | $2.nVal);
+			rpn_Free(&$2);
 		}
 ;
 

src/asm/charmap.c

@@ -6,6 +6,7 @@
  * SPDX-License-Identifier: MIT
  */
 
+#include <stdbool.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -15,134 +16,281 @@
 #include "asm/charmap.h"
 #include "asm/main.h"
 #include "asm/output.h"
+#include "asm/util.h"
 
-#include "extern/utf8decoder.h"
+#define CHARMAP_HASH_SIZE (1 << 9)
 
-struct Charmap globalCharmap = {0};
+struct CharmapStackEntry {
+	struct Charmap *charmap;
+	struct CharmapStackEntry *next;
+};
 
-int32_t readUTF8Char(char *dest, char *src)
+static struct Charmap *tHashedCharmaps[CHARMAP_HASH_SIZE];
+
+static struct Charmap *mainCharmap;
+static struct Charmap *currentCharmap;
+
+struct CharmapStackEntry *charmapStack;
+
+static void warnSectionCharmap(void)
 {
-	uint32_t state;
+	static bool warned = false;
-	uint32_t codep;
-	int32_t i;
 
-	for (i = 0, state = 0;; i++) {
+	if (warned)
-		if (decode(&state, &codep, (uint8_t)src[i]) == 1)
+		return;
-			fatalerror("invalid UTF-8 character");
 
-		dest[i] = src[i];
+	warning("Using 'charmap' within a section when the current charmap is 'main' is deprecated");
-
+	warned = true;
-		if (state == 0) {
-			dest[++i] = '\0';
-			return i;
 }
+
+static uint32_t charmap_CalcHash(const char *s)
+{
+	return calchash(s) % CHARMAP_HASH_SIZE;
 }
+
+static struct Charmap **charmap_Get(const char *name)
+{
+	struct Charmap **ppCharmap = &tHashedCharmaps[charmap_CalcHash(name)];
+
+	while (*ppCharmap != NULL && strcmp((*ppCharmap)->name, name))
+		ppCharmap = &(*ppCharmap)->next;
+
+	return ppCharmap;
+}
+
+static void CopyNode(struct Charmap *dest,
+		     const struct Charmap *src,
+		     int nodeIdx)
+{
+	dest->nodes[nodeIdx].code = src->nodes[nodeIdx].code;
+	dest->nodes[nodeIdx].isCode = src->nodes[nodeIdx].isCode;
+	for (int i = 0; i < 256; i++)
+		if (src->nodes[nodeIdx].next[i])
+			dest->nodes[nodeIdx].next[i] = dest->nodes +
+				(src->nodes[nodeIdx].next[i] - src->nodes);
+}
+
+struct Charmap *charmap_New(const char *name, const char *baseName)
+{
+	struct Charmap *pBase = NULL;
+
+	if (baseName != NULL) {
+		struct Charmap **ppBase = charmap_Get(baseName);
+
+		if (*ppBase == NULL) {
+			yyerror("Base charmap '%s' doesn't exist", baseName);
+			return NULL;
+		}
+
+		pBase = *ppBase;
+	}
+
+	struct Charmap **ppCharmap = charmap_Get(name);
+
+	if (*ppCharmap != NULL) {
+		yyerror("Charmap '%s' already exists", name);
+		return NULL;
+	}
+
+	*ppCharmap = calloc(1, sizeof(struct Charmap));
+
+	if (*ppCharmap == NULL)
+		fatalerror("Not enough memory for charmap");
+
+	struct Charmap *pCharmap = *ppCharmap;
+
+	snprintf(pCharmap->name, sizeof(pCharmap->name), "%s", name);
+
+	if (pBase != NULL) {
+		pCharmap->charCount = pBase->charCount;
+		pCharmap->nodeCount = pBase->nodeCount;
+
+		for (int i = 0; i < MAXCHARNODES; i++)
+			CopyNode(pCharmap, pBase, i);
+	}
+
+	currentCharmap = pCharmap;
+
+	return pCharmap;
+}
+
+void charmap_Set(const char *name)
+{
+	struct Charmap **ppCharmap = charmap_Get(name);
+
+	if (*ppCharmap == NULL) {
+		yyerror("Charmap '%s' doesn't exist", name);
+		return;
+	}
+
+	currentCharmap = *ppCharmap;
+}
+
+void charmap_Push(void)
+{
+	struct CharmapStackEntry *stackEntry;
+
+	stackEntry = malloc(sizeof(struct CharmapStackEntry));
+	if (stackEntry == NULL)
+		fatalerror("No memory for charmap stack");
+
+	stackEntry->charmap = currentCharmap;
+	stackEntry->next = charmapStack;
+
+	charmapStack = stackEntry;
+}
+
+void charmap_Pop(void)
+{
+	if (charmapStack == NULL)
+		fatalerror("No entries in the charmap stack");
+
+	struct CharmapStackEntry *top = charmapStack;
+
+	currentCharmap = top->charmap;
+	charmapStack = top->next;
+	free(top);
+}
+
+void charmap_InitMain(void)
+{
+	mainCharmap = charmap_New("main", NULL);
 }
 
 int32_t charmap_Add(char *input, uint8_t output)
 {
 	int32_t i;
-	size_t input_length;
+	uint8_t v;
-	char temp1i[CHARMAPLENGTH + 1], temp2i[CHARMAPLENGTH + 1];
-	char temp1o = 0, temp2o = 0;
 
 	struct Charmap 	*charmap;
+	struct Charnode	*curr_node, *temp_node;
 
-	if (pCurrentSection) {
+	/*
+	 * If the user tries to define a character mapping inside a section
+	 * and the current global charmap is the "main" one, then a local
+	 * section charmap will be created or modified instead of the global
+	 * one. In other words, the local section charmap can override the
+	 * main global one, but not the others.
+	 */
+	if (pCurrentSection && currentCharmap == mainCharmap) {
+		warnSectionCharmap();
 		if (pCurrentSection->charmap) {
 			charmap = pCurrentSection->charmap;
 		} else {
 			charmap = calloc(1, sizeof(struct Charmap));
 			if (charmap == NULL)
 				fatalerror("Not enough memory for charmap");
-
 			pCurrentSection->charmap = charmap;
 		}
 	} else {
-		charmap = &globalCharmap;
+		charmap = currentCharmap;
 	}
 
-	if (nPass == 2)
+	if (charmap->charCount >= MAXCHARMAPS || strlen(input) > CHARMAPLENGTH)
-		return charmap->count;
-
-	if (charmap->count > MAXCHARMAPS || strlen(input) > CHARMAPLENGTH)
 		return -1;
 
-	input_length = strlen(input);
+	curr_node = &charmap->nodes[0];
-	if (input_length > 1) {
+
-		i = 0;
+	for (i = 0; (v = (uint8_t)input[i]); i++) {
-		while (i < charmap->count + 1) {
+		if (curr_node->next[v]) {
-			if (input_length > strlen(charmap->input[i])) {
+			curr_node = curr_node->next[v];
-				memcpy(temp1i, charmap->input[i],
-				       CHARMAPLENGTH + 1);
-				memcpy(charmap->input[i], input, input_length);
-				temp1o = charmap->output[i];
-				charmap->output[i] = output;
-				i++;
-				break;
-			}
-			i++;
-		}
-		while (i < charmap->count + 1) {
-			memcpy(temp2i, charmap->input[i], CHARMAPLENGTH + 1);
-			memcpy(charmap->input[i], temp1i, CHARMAPLENGTH + 1);
-			memcpy(temp1i, temp2i, CHARMAPLENGTH + 1);
-			temp2o = charmap->output[i];
-			charmap->output[i] = temp1o;
-			temp1o = temp2o;
-			i++;
-		}
-		memcpy(charmap->input[charmap->count + 1], temp1i,
-		       CHARMAPLENGTH + 1);
-		charmap->output[charmap->count + 1] = temp1o;
 		} else {
-		memcpy(charmap->input[charmap->count], input, input_length);
+			temp_node = &charmap->nodes[charmap->nodeCount + 1];
-		charmap->output[charmap->count] = output;
+
+			curr_node->next[v] = temp_node;
+			curr_node = temp_node;
+
+			++charmap->nodeCount;
 		}
-	return ++charmap->count;
+	}
+
+	/* prevent duplicated keys by accepting only first key-value pair.  */
+	if (curr_node->isCode)
+		return charmap->charCount;
+
+	curr_node->code = output;
+	curr_node->isCode = 1;
+
+	return ++charmap->charCount;
 }
 
 int32_t charmap_Convert(char **input)
 {
 	struct Charmap 	*charmap;
+	struct Charnode	*charnode;
 
-	char outchar[CHARMAPLENGTH + 1];
+	char *output;
-	char *buffer;
+	char outchar[8];
-	int32_t i, j, length;
 
-	if (pCurrentSection && pCurrentSection->charmap)
+	int32_t i, match, length;
+	uint8_t v, foundCode;
+
+	/*
+	 * If there is a local section charmap and the current global charmap
+	 * is the "main" one, the local one is used. Otherwise, the global
+	 * one is used. In other words, the local section charmap can override
+	 * the main global one, but not the others.
+	 */
+	if (pCurrentSection &&
+	    pCurrentSection->charmap &&
+	    currentCharmap == mainCharmap)
 		charmap = pCurrentSection->charmap;
 	else
-		charmap = &globalCharmap;
+		charmap = currentCharmap;
 
-	buffer = malloc(strlen(*input));
+	output = malloc(strlen(*input));
-	if (buffer == NULL)
+	if (output == NULL)
 		fatalerror("Not enough memory for buffer");
 
 	length = 0;
+
 	while (**input) {
-		j = 0;
+		charnode = &charmap->nodes[0];
-		for (i = 0; i < charmap->count; i++) {
+
-			j = strlen(charmap->input[i]);
+		/*
-			if (memcmp(*input, charmap->input[i], j) == 0) {
+		 * find the longest valid match which has been registered in charmap.
-				outchar[0] = charmap->output[i];
+		 * note that there could be either multiple matches or no match.
-				outchar[1] = 0;
+		 * and it possibly takes the longest match between them,
+		 * which means that it ignores partial matches shorter than the longest one.
+		*/
+		for (i = match = 0; (v = (*input)[i]);) {
+			if (!charnode->next[v])
 				break;
+
+			charnode = charnode->next[v];
+			i++;
+
+			if (charnode->isCode) {
+				match = i;
+				foundCode = charnode->code;
 			}
-			j = 0;
 		}
 
-		if (!j)
+		if (match) {
-			j = readUTF8Char(outchar, *input);
+			output[length] = foundCode;
 
-		if (!outchar[0]) {
+			length += 1;
-			buffer[length++] = 0;
 		} else {
-			for (i = 0; outchar[i]; i++)
+			/*
-				buffer[length++] = outchar[i];
+			 * put a utf-8 character
+			 * if failed to find a match.
+			 */
+			match = readUTF8Char(outchar, *input);
+
+			if (match) {
+				memcpy(output + length, *input, match);
+			} else {
+				output[length] = 0;
+				match = 1;
 			}
-		*input += j;
+
+			length += match;
 		}
-	*input = buffer;
+
+		*input += match;
+	}
+
+	*input = output;
+
 	return length;
 }

src/asm/constexpr.c

@@ -66,7 +66,7 @@ void constexpr_UnaryOp(struct ConstExpression *expr,
 		result = value;
 		break;
 	case T_OP_SUB:
-		result = -value;
+		result = -(uint32_t)value;
 		break;
 	case T_OP_NOT:
 		result = ~value;
@@ -155,10 +155,10 @@ void constexpr_BinaryOp(struct ConstExpression *expr,
 			result = value1 != value2;
 			break;
 		case T_OP_ADD:
-			result = value1 + value2;
+			result = (uint32_t)value1 + (uint32_t)value2;
 			break;
 		case T_OP_SUB:
-			result = value1 - value2;
+			result = (uint32_t)value1 - (uint32_t)value2;
 			break;
 		case T_OP_XOR:
 			result = value1 ^ value2;
@@ -181,7 +181,7 @@ void constexpr_BinaryOp(struct ConstExpression *expr,
 				fatalerror("Shift by too big value: %d",
 					   value2);
 
-			result = value1 << value2;
+			result = (uint32_t)value1 << value2;
 			break;
 		case T_OP_SHR:
 			if (value2 < 0)
@@ -194,16 +194,24 @@ void constexpr_BinaryOp(struct ConstExpression *expr,
 			result = value1 >> value2;
 			break;
 		case T_OP_MUL:
-			result = value1 * value2;
+			result = (uint32_t)value1 * (uint32_t)value2;
 			break;
 		case T_OP_DIV:
 			if (value2 == 0)
 				fatalerror("Division by zero");
+			if (value1 == INT32_MIN && value2 == -1) {
+				warning("Division of min value by -1");
+				result = INT32_MIN;
+			} else {
 				result = value1 / value2;
+			}
 			break;
 		case T_OP_MOD:
 			if (value2 == 0)
 				fatalerror("Division by zero");
+			if (value1 == INT32_MIN && value2 == -1)
+				result = 0;
+			else
 				result = value1 % value2;
 			break;
 		case T_OP_FDIV:

src/asm/fstack.c

@@ -28,6 +28,8 @@
 #include "types.h"
 
 static struct sContext *pFileStack;
+static unsigned int nFileStackDepth;
+unsigned int nMaxRecursionDepth;
 static struct sSymbol *pCurrentMacro;
 static YY_BUFFER_STATE CurrentFlexHandle;
 static FILE *pCurrentFile;
@@ -40,6 +42,8 @@ static uint32_t nMacroCount;
 static char *pCurrentREPTBlock;
 static uint32_t nCurrentREPTBlockSize;
 static uint32_t nCurrentREPTBlockCount;
+static int32_t nCurrentREPTBodyFirstLine;
+static int32_t nCurrentREPTBodyLastLine;
 
 uint32_t ulMacroReturnValue;
 
@@ -51,6 +55,8 @@ uint32_t ulMacroReturnValue;
 #define STAT_isMacroArg		2
 #define STAT_isREPTBlock	3
 
+/* Max context stack size */
+
 /*
  * Context push and pop
  */
@@ -58,6 +64,9 @@ static void pushcontext(void)
 {
 	struct sContext **ppFileStack;
 
+	if (++nFileStackDepth > nMaxRecursionDepth)
+		fatalerror("Recursion limit (%d) exceeded", nMaxRecursionDepth);
+
 	ppFileStack = &pFileStack;
 	while (*ppFileStack)
 		ppFileStack = &((*ppFileStack)->pNext);
@@ -86,6 +95,8 @@ static void pushcontext(void)
 		(*ppFileStack)->pREPTBlock = pCurrentREPTBlock;
 		(*ppFileStack)->nREPTBlockSize = nCurrentREPTBlockSize;
 		(*ppFileStack)->nREPTBlockCount = nCurrentREPTBlockCount;
+		(*ppFileStack)->nREPTBodyFirstLine = nCurrentREPTBodyFirstLine;
+		(*ppFileStack)->nREPTBodyLastLine = nCurrentREPTBodyLastLine;
 		break;
 	default:
 		fatalerror("%s: Internal error.", __func__);
@@ -100,6 +111,11 @@ static int32_t popcontext(void)
 
 	if (nCurrentStatus == STAT_isREPTBlock) {
 		if (--nCurrentREPTBlockCount) {
+			char *pREPTIterationWritePtr;
+			unsigned long nREPTIterationNo;
+			int nNbCharsWritten;
+			int nNbCharsLeft;
+
 			yy_delete_buffer(CurrentFlexHandle);
 			CurrentFlexHandle =
 				yy_scan_bytes(pCurrentREPTBlock,
@@ -108,6 +124,29 @@ static int32_t popcontext(void)
 			sym_UseCurrentMacroArgs();
 			sym_SetMacroArgID(nMacroCount++);
 			sym_UseNewMacroArgs();
+
+			/* Increment REPT count in file path */
+			pREPTIterationWritePtr =
+				strrchr(tzCurrentFileName, '~') + 1;
+			nREPTIterationNo =
+				strtoul(pREPTIterationWritePtr, NULL, 10);
+			nNbCharsLeft = sizeof(tzCurrentFileName)
+				- (pREPTIterationWritePtr - tzCurrentFileName);
+			nNbCharsWritten = snprintf(pREPTIterationWritePtr,
+						   nNbCharsLeft, "%lu",
+						   nREPTIterationNo + 1);
+			if (nNbCharsWritten >= nNbCharsLeft) {
+				/*
+				 * The string is probably corrupted somehow,
+				 * revert the change to avoid a bad error
+				 * output.
+				 */
+				sprintf(pREPTIterationWritePtr, "%lu",
+					nREPTIterationNo);
+				fatalerror("Cannot write REPT count to file path");
+			}
+
+			nLineNo = nCurrentREPTBodyFirstLine;
 			return 0;
 		}
 	}
@@ -128,13 +167,9 @@ static int32_t popcontext(void)
 	if (nCurrentStatus == STAT_isInclude)
 		fclose(pCurrentFile);
 
-	if (nCurrentStatus == STAT_isMacro) {
+	if (nCurrentStatus == STAT_isMacro
-		sym_FreeCurrentMacroArgs();
+	 || nCurrentStatus == STAT_isREPTBlock)
-		nLineNo += 1;
+		nLineNo++;
-	}
-
-	if (nCurrentStatus == STAT_isREPTBlock)
-		nLineNo += 1;
 
 	CurrentFlexHandle = pLastFile->FlexHandle;
 	strcpy((char *)tzCurrentFileName, (char *)pLastFile->tzFileName);
@@ -153,11 +188,16 @@ static int32_t popcontext(void)
 		pCurrentREPTBlock = pLastFile->pREPTBlock;
 		nCurrentREPTBlockSize = pLastFile->nREPTBlockSize;
 		nCurrentREPTBlockCount = pLastFile->nREPTBlockCount;
+		nCurrentREPTBodyFirstLine = pLastFile->nREPTBodyFirstLine;
+		/* + 1 to account for the `ENDR` line */
+		nLineNo = pLastFile->nREPTBodyLastLine + 1;
 		break;
 	default:
 		fatalerror("%s: Internal error.", __func__);
 	}
 
+	nFileStackDepth--;
+
 	free(*ppLastFile);
 	*ppLastFile = NULL;
 	yy_switch_to_buffer(CurrentFlexHandle);
@@ -222,6 +262,20 @@ void fstk_Dump(void)
 	fprintf(stderr, "%s(%d)", tzCurrentFileName, nLineNo);
 }
 
+/*
+ * Dump the string expansion stack to stderr
+ */
+void fstk_DumpStringExpansions(void)
+{
+	const struct sStringExpansionPos *pExpansion = pCurrentStringExpansion;
+
+	while (pExpansion) {
+		fprintf(stderr, "while expanding symbol \"%s\"\n",
+			pExpansion->tzName);
+		pExpansion = pExpansion->pParent;
+	}
+}
+
 /*
  * Extra includepath stuff
  */
@@ -317,19 +371,23 @@ void fstk_RunInclude(char *tzFileName)
 uint32_t fstk_RunMacro(char *s)
 {
 	struct sSymbol *sym = sym_FindMacro(s);
+	int nPrintedChars;
 
-	if (sym == NULL)
+	if (sym == NULL || sym->pMacro == NULL)
 		return 0;
 
 	pushcontext();
 	sym_SetMacroArgID(nMacroCount++);
-	nLineNo = -1;
+	/* Minus 1 because there is a newline at the beginning of the buffer */
+	nLineNo = sym->nFileLine - 1;
 	sym_UseNewMacroArgs();
 	nCurrentStatus = STAT_isMacro;
-	strcpy(tzCurrentFileName, s);
+	nPrintedChars = snprintf(tzCurrentFileName, _MAX_PATH + 1,
-
+				 "%s::%s", sym->tzFileName, s);
-	if (sym->pMacro == NULL)
+	if (nPrintedChars > _MAX_PATH) {
-		return 0;
+		popcontext();
+		fatalerror("File name + macro name is too large to fit into buffer");
+	}
 
 	pCurrentMacro = sym;
 	CurrentFlexHandle = yy_scan_bytes(pCurrentMacro->pMacro,
@@ -385,17 +443,30 @@ void fstk_RunString(char *s)
 /*
  * Set up a repeat block for parsing
  */
-void fstk_RunRept(uint32_t count)
+void fstk_RunRept(uint32_t count, int32_t nReptLineNo)
 {
 	if (count) {
-		pushcontext();
+		static const char *tzReptStr = "::REPT~1";
+
+		/* For error printing to make sense, fake nLineNo */
+		nCurrentREPTBodyLastLine = nLineNo;
+		nLineNo = nReptLineNo;
 		sym_UseCurrentMacroArgs();
+		pushcontext();
 		sym_SetMacroArgID(nMacroCount++);
 		sym_UseNewMacroArgs();
 		nCurrentREPTBlockCount = count;
 		nCurrentStatus = STAT_isREPTBlock;
 		nCurrentREPTBlockSize = ulNewMacroSize;
 		pCurrentREPTBlock = tzNewMacro;
+		nCurrentREPTBodyFirstLine = nReptLineNo + 1;
+		nLineNo = nReptLineNo;
+
+		if (strlen(tzCurrentFileName) + strlen(tzReptStr) > _MAX_PATH)
+			fatalerror("Cannot append \"%s\" to file path",
+				   tzReptStr);
+		strcat(tzCurrentFileName, tzReptStr);
+
 		CurrentFlexHandle =
 			yy_scan_bytes(pCurrentREPTBlock, nCurrentREPTBlockSize);
 		yy_switch_to_buffer(CurrentFlexHandle);
@@ -405,23 +476,26 @@ void fstk_RunRept(uint32_t count)
 /*
  * Initialize the filestack routines
  */
-void fstk_Init(char *s)
+void fstk_Init(char *pFileName)
 {
-	char tzFileName[_MAX_PATH + 1];
 	char tzSymFileName[_MAX_PATH + 1 + 2];
 
-	snprintf(tzSymFileName, sizeof(tzSymFileName), "\"%s\"", s);
+	snprintf(tzSymFileName, sizeof(tzSymFileName), "\"%s\"", pFileName);
 	sym_AddString("__FILE__", tzSymFileName);
 
-	strcpy(tzFileName, s);
 	pFileStack = NULL;
-	pCurrentFile = fopen(tzFileName, "rb");
+	if (strcmp(pFileName, "-") == 0) {
+		pCurrentFile = stdin;
+	} else {
+		pCurrentFile = fopen(pFileName, "rb");
 		if (pCurrentFile == NULL)
-		err(1, "Unable to open file '%s'", tzFileName);
+			err(1, "Unable to open file '%s'", pFileName);
+	}
+	nFileStackDepth = 0;
 
 	nMacroCount = 0;
 	nCurrentStatus = STAT_isInclude;
-	snprintf(tzCurrentFileName, _MAX_PATH + 1, "%s", tzFileName);
+	snprintf(tzCurrentFileName, _MAX_PATH + 1, "%s", pFileName);
 	CurrentFlexHandle = yy_create_buffer(pCurrentFile);
 	yy_switch_to_buffer(CurrentFlexHandle);
 	nLineNo = 1;

src/asm/globlex.c

@@ -71,8 +71,9 @@ typedef int32_t(*x2bin) (char ch);
 
 static int32_t ascii2bin(char *s)
 {
-	int32_t radix = 10;
+	char *start = s;
-	int32_t result = 0;
+	uint32_t radix = 10;
+	uint32_t result = 0;
 	x2bin convertfunc = char2bin;
 
 	switch (*s) {
@@ -101,6 +102,9 @@ static int32_t ascii2bin(char *s)
 		break;
 	}
 
+	const uint32_t max_q = UINT32_MAX / radix;
+	const uint32_t max_r = UINT32_MAX % radix;
+
 	if (*s == '\0') {
 		/*
 		 * There are no digits after the radix prefix
@@ -108,15 +112,39 @@ static int32_t ascii2bin(char *s)
 		 */
 		yyerror("Invalid integer constant");
 	} else if (radix == 4) {
+		int32_t size = 0;
 		int32_t c;
 
 		while (*s != '\0') {
 			c = convertfunc(*s++);
 			result = result * 2 + ((c & 2) << 7) + (c & 1);
+			size++;
+		}
+
+		/*
+		 * Extending a graphics constant longer than 8 pixels,
+		 * the Game Boy tile width, produces a nonsensical result.
+		 */
+		if (size > 8) {
+			warning("Graphics constant '%s' is too long",
+				start);
 		}
 	} else {
-		while (*s != '\0')
+		bool overflow = false;
-			result = result * radix + convertfunc(*s++);
+
+		while (*s != '\0') {
+			int32_t digit = convertfunc(*s++);
+
+			if (result > max_q
+			 || (result == max_q && digit > max_r)) {
+				overflow = true;
+			}
+			result = result * radix + digit;
+		}
+
+		if (overflow)
+			warning("Integer constant '%s' is too large",
+				start);
 	}
 
 	return result;
@@ -124,19 +152,19 @@ static int32_t ascii2bin(char *s)
 
 uint32_t ParseFixedPoint(char *s, uint32_t size)
 {
-	uint32_t i = 0, dot = 0;
+	uint32_t i;
+	uint32_t dot = 0;
 
-	while (size && dot != 2) {
+	for (i = 0; i < size; i++) {
-		if (s[i] == '.')
+		if (s[i] == '.') {
-			dot += 1;
+			dot++;
 
-		if (dot < 2) {
+			if (dot == 2)
-			size -= 1;
+				break;
-			i += 1;
 		}
 	}
 
-	yyunputbytes(size);
+	yyskipbytes(i);
 
 	yylval.nConstValue = (int32_t)(atof(s) * 65536);
 
@@ -147,66 +175,124 @@ uint32_t ParseNumber(char *s, uint32_t size)
 {
 	char dest[256];
 
+	if (size > 255)
+		fatalerror("Number token too long");
+
 	strncpy(dest, s, size);
 	dest[size] = 0;
 	yylval.nConstValue = ascii2bin(dest);
 
+	yyskipbytes(size);
+
 	return 1;
 }
 
+/*
+ * If the symbol name ends before the end of the macro arg,
+ * return a pointer to the rest of the macro arg.
+ * Otherwise, return NULL.
+ */
+char *AppendMacroArg(char whichArg, char *dest, size_t *destIndex)
+{
+	char *marg;
+
+	if (whichArg == '@')
+		marg = sym_FindMacroArg(-1);
+	else if (whichArg >= '1' && whichArg <= '9')
+		marg = sym_FindMacroArg(whichArg - '0');
+	else
+		fatalerror("Invalid macro argument '\\%c' in symbol", whichArg);
+
+	if (!marg)
+		fatalerror("Macro argument '\\%c' not defined", whichArg);
+
+	char ch;
+
+	while ((ch = *marg) != 0) {
+		if ((ch >= 'a' && ch <= 'z')
+		 || (ch >= 'A' && ch <= 'Z')
+		 || (ch >= '0' && ch <= '9')
+		 || ch == '_'
+		 || ch == '@'
+		 || ch == '#'
+		 || ch == '.') {
+			if (*destIndex >= MAXSYMLEN)
+				fatalerror("Symbol too long");
+
+			dest[*destIndex] = ch;
+			(*destIndex)++;
+		} else {
+			return marg;
+		}
+
+		marg++;
+	}
+
+	return NULL;
+}
+
 uint32_t ParseSymbol(char *src, uint32_t size)
 {
 	char dest[MAXSYMLEN + 1];
-	int32_t copied = 0, size_backup = size;
+	size_t srcIndex = 0;
+	size_t destIndex = 0;
+	char *rest = NULL;
 
-	while (size && copied < MAXSYMLEN) {
+	while (srcIndex < size) {
-		if (*src == '\\') {
+		char ch = src[srcIndex++];
-			char *marg;
 
-			src += 1;
+		if (ch == '\\') {
-			size -= 1;
+			/*
+			 * We don't check if srcIndex is still less than size,
+			 * but that can only fail to be true when the
+			 * following char is neither '@' nor a digit.
+			 * In that case, AppendMacroArg() will catch the error.
+			 */
+			ch = src[srcIndex++];
 
-			if (*src == '@') {
+			rest = AppendMacroArg(ch, dest, &destIndex);
-				marg = sym_FindMacroArg(-1);
+			/* If the symbol's end was in the middle of the token */
-			} else if (*src >= '0' && *src <= '9') {
+			if (rest)
-				marg = sym_FindMacroArg(*src - '0');
+				break;
 		} else {
-				fatalerror("Malformed ID");
+			if (destIndex >= MAXSYMLEN)
-				return 0;
-			}
-
-			src += 1;
-			size -= 1;
-
-			if (marg) {
-				while (*marg)
-					dest[copied++] = *marg++;
-			}
-		} else {
-			dest[copied++] = *src++;
-			size -= 1;
-		}
-	}
-
-	if (copied > MAXSYMLEN)
 				fatalerror("Symbol too long");
+			dest[destIndex++] = ch;
+		}
+	}
 
-	dest[copied] = 0;
+	dest[destIndex] = 0;
 
+	/* Tell the lexer we read all bytes that we did */
+	yyskipbytes(srcIndex);
+
+	/*
+	 * If an escape's expansion left some chars after the symbol's end,
+	 * such as the `::` in a `Backup\1` expanded to `BackupCamX::`,
+	 * put those into the buffer.
+	 * Note that this NEEDS to be done after the `yyskipbytes` above.
+	 */
+	if (rest)
+		yyunputstr(rest);
+
+	/* If the symbol is an EQUS, expand it */
 	if (!oDontExpandStrings && sym_isString(dest)) {
 		char *s;
 
-		yyskipbytes(size_backup);
+		lex_BeginStringExpansion(dest);
+
+		/* Feed the symbol's contents into the buffer */
 		yyunputstr(s = sym_GetStringValue(dest));
 
+		/* Lines inserted this way shall not increase nLineNo */
 		while (*s) {
 			if (*s++ == '\n')
-				nLineNo -= 1;
+				nLineNo--;
 		}
 		return 0;
 	}
 
-	strcpy(yylval.tzString, dest);
+	strcpy(yylval.tzSym, dest);
 	return 1;
 }
 
@@ -221,9 +307,9 @@ uint32_t PutMacroArg(char *src, uint32_t size)
 		if (s != NULL)
 			yyunputstr(s);
 		else
-			yyerror("Macro argument not defined");
+			yyerror("Macro argument '\\%c' not defined", src[1]);
 	} else {
-		yyerror("Invalid macro argument");
+		yyerror("Invalid macro argument '\\%c'", src[1]);
 	}
 	return 0;
 }
@@ -401,6 +487,10 @@ const struct sLexInitString lexer_strings[] = {
 
 	{"incbin", T_POP_INCBIN},
 	{"charmap", T_POP_CHARMAP},
+	{"newcharmap", T_POP_NEWCHARMAP},
+	{"setcharmap", T_POP_SETCHARMAP},
+	{"pushc", T_POP_PUSHC},
+	{"popc", T_POP_POPC},
 
 	{"fail", T_POP_FAIL},
 	{"warn", T_POP_WARN},

src/asm/lexer.c

@@ -1,7 +1,7 @@
 /*
  * This file is part of RGBDS.
  *
- * Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors.
+ * Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
  *
  * SPDX-License-Identifier: MIT
  */
@@ -38,6 +38,8 @@ struct sLexString {
 
 #define SAFETYMARGIN		1024
 
+#define BOM_SIZE 3
+
 struct sLexFloat tLexFloat[32];
 struct sLexString *tLexHash[LEXHASHSIZE];
 YY_BUFFER_STATE pCurrentBuffer;
@@ -49,6 +51,12 @@ uint32_t tFloatingChars[256];
 uint32_t nFloating;
 enum eLexerState lexerstate = LEX_STATE_NORMAL;
 
+struct sStringExpansionPos *pCurrentStringExpansion;
+static unsigned int nNbStringExpansions;
+
+/* UTF-8 byte order mark */
+static const unsigned char bom[BOM_SIZE] = { 0xEF, 0xBB, 0xBF };
+
 void upperstring(char *s)
 {
 	while (*s) {
@@ -83,17 +91,49 @@ void yyunput(char c)
 	*(--pLexBuffer) = c;
 }
 
-void yyunputstr(char *s)
+void yyunputstr(const char *s)
 {
-	int32_t i, len;
+	int32_t len;
 
 	len = strlen(s);
 
-	if (pLexBuffer - len < pLexBufferRealStart)
+	/*
+	 * It would be undefined behavior to subtract `len` from pLexBuffer and
+	 * potentially have it point outside of pLexBufferRealStart's buffer,
+	 * this is why the check is done this way.
+	 * Refer to https://github.com/rednex/rgbds/pull/411#discussion_r319779797
+	 */
+	if (pLexBuffer - pLexBufferRealStart < len)
 		fatalerror("Buffer safety margin exceeded");
 
-	for (i = len - 1; i >= 0; i--)
+	pLexBuffer -= len;
-		*(--pLexBuffer) = s[i];
+
+	memcpy(pLexBuffer, s, len);
+}
+
+/*
+ * Marks that a new string expansion with name `tzName` ends here
+ * Enforces recursion depth
+ */
+void lex_BeginStringExpansion(const char *tzName)
+{
+	if (++nNbStringExpansions > nMaxRecursionDepth)
+		fatalerror("Recursion limit (%d) exceeded", nMaxRecursionDepth);
+
+	struct sStringExpansionPos *pNewStringExpansion =
+		malloc(sizeof(*pNewStringExpansion));
+	char *tzNewExpansionName = strdup(tzName);
+
+	if (!pNewStringExpansion || !tzNewExpansionName)
+		fatalerror("Could not allocate memory to expand '%s'",
+			   tzName);
+
+	pNewStringExpansion->tzName = tzNewExpansionName;
+	pNewStringExpansion->pBuffer = pLexBufferRealStart;
+	pNewStringExpansion->pBufferPos = pLexBuffer;
+	pNewStringExpansion->pParent = pCurrentStringExpansion;
+
+	pCurrentStringExpansion = pNewStringExpansion;
 }
 
 void yy_switch_to_buffer(YY_BUFFER_STATE buf)
@@ -118,13 +158,34 @@ void yy_delete_buffer(YY_BUFFER_STATE buf)
  * 2. The buffer is terminated with 0
  * 3. nBufferSize is the size without the terminator
  */
-static void yy_buffer_append(YY_BUFFER_STATE buf, uint32_t capacity, char c)
+static void yy_buffer_append(YY_BUFFER_STATE buf, size_t capacity, char c)
 {
-	assert(buf->pBuffer[buf->nBufferSize] == 0);
+	assert(buf->pBufferStart[buf->nBufferSize] == 0);
 	assert(buf->nBufferSize + 1 < capacity);
 
-	buf->pBuffer[buf->nBufferSize++] = c;
+	buf->pBufferStart[buf->nBufferSize++] = c;
-	buf->pBuffer[buf->nBufferSize] = 0;
+	buf->pBufferStart[buf->nBufferSize] = 0;
+}
+
+static void yy_buffer_append_newlines(YY_BUFFER_STATE buf, size_t capacity)
+{
+	/* Add newline if file doesn't end with one */
+	if (buf->nBufferSize == 0
+	 || buf->pBufferStart[buf->nBufferSize - 1] != '\n')
+		yy_buffer_append(buf, capacity, '\n');
+
+	/* Add newline if \ will eat the last newline */
+	if (buf->nBufferSize >= 2) {
+		size_t pos = buf->nBufferSize - 2;
+
+		/* Skip spaces and tabs */
+		while (pos > 0 && (buf->pBufferStart[pos] == ' '
+				|| buf->pBufferStart[pos] == '\t'))
+			pos--;
+
+		if (buf->pBufferStart[pos] == '\\')
+			yy_buffer_append(buf, capacity, '\n');
+	}
 }
 
 YY_BUFFER_STATE yy_scan_bytes(char *mem, uint32_t size)
@@ -134,7 +195,9 @@ YY_BUFFER_STATE yy_scan_bytes(char *mem, uint32_t size)
 	if (pBuffer == NULL)
 		fatalerror("%s: Out of memory!", __func__);
 
-	pBuffer->pBufferRealStart = malloc(size + 1 + SAFETYMARGIN);
+	size_t capacity = size + 3; /* space for 2 newlines and terminator */
+
+	pBuffer->pBufferRealStart = malloc(capacity + SAFETYMARGIN);
 
 	if (pBuffer->pBufferRealStart == NULL)
 		fatalerror("%s: Out of memory for buffer!", __func__);
@@ -142,9 +205,10 @@ YY_BUFFER_STATE yy_scan_bytes(char *mem, uint32_t size)
 	pBuffer->pBufferStart = pBuffer->pBufferRealStart + SAFETYMARGIN;
 	pBuffer->pBuffer = pBuffer->pBufferRealStart + SAFETYMARGIN;
 	memcpy(pBuffer->pBuffer, mem, size);
-	pBuffer->nBufferSize = size;
-	pBuffer->oAtLineStart = 1;
 	pBuffer->pBuffer[size] = 0;
+	pBuffer->nBufferSize = size;
+	yy_buffer_append_newlines(pBuffer, capacity);
+	pBuffer->oAtLineStart = 1;
 
 	return pBuffer;
 }
@@ -156,71 +220,119 @@ YY_BUFFER_STATE yy_create_buffer(FILE *f)
 	if (pBuffer == NULL)
 		fatalerror("%s: Out of memory!", __func__);
 
-	uint32_t size;
+	size_t size = 0, capacity = -1;
+	char *buf = NULL;
 
+	/*
+	 * Check if we can get the file size without implementation-defined
+	 * behavior:
+	 *
+	 * From ftell(3p):
+	 * [On error], ftell() and ftello() shall return −1, and set errno to
+	 * indicate the error.
+	 *
+	 * The ftell() and ftello() functions shall fail if: [...]
+	 * ESPIPE The file descriptor underlying stream is associated with a
+	 * pipe, FIFO, or socket.
+	 *
+	 * From fseek(3p):
+	 * The behavior of fseek() on devices which are incapable of seeking
+	 * is implementation-defined.
+	 */
+	if (ftell(f) != -1) {
 		fseek(f, 0, SEEK_END);
-	size = ftell(f);
+		capacity = ftell(f);
-	fseek(f, 0, SEEK_SET);
+		rewind(f);
+	}
 
+	// If ftell errored or the block above wasn't executed
+	if (capacity == -1)
+		capacity = 4096;
+	// Handle 0-byte files gracefully
+	else if (capacity == 0)
+		capacity = 1;
+
+	while (!feof(f)) {
+		if (buf == NULL || size >= capacity) {
+			if (buf)
+				capacity *= 2;
 			/* Give extra room for 2 newlines and terminator */
-	uint32_t capacity = size + 3;
+			buf = realloc(buf, capacity + SAFETYMARGIN + 3);
 
-	pBuffer->pBufferRealStart = malloc(capacity + SAFETYMARGIN);
+			if (buf == NULL)
+				fatalerror("%s: Out of memory for buffer!",
+					   __func__);
+		}
 
-	if (pBuffer->pBufferRealStart == NULL)
+		char *bufpos = buf + SAFETYMARGIN + size;
-		fatalerror("%s: Out of memory for buffer!", __func__);
+		size_t read_count = fread(bufpos, 1, capacity - size, f);
 
-	pBuffer->pBufferStart = pBuffer->pBufferRealStart + SAFETYMARGIN;
+		if (read_count == 0 && !feof(f))
-	pBuffer->pBuffer = pBuffer->pBufferRealStart + SAFETYMARGIN;
+			fatalerror("%s: fread error", __func__);
 
-	size = fread(pBuffer->pBuffer, sizeof(uint8_t), size, f);
+		size += read_count;
+	}
 
+	pBuffer->pBufferRealStart = buf;
+	pBuffer->pBufferStart = buf + SAFETYMARGIN;
+	pBuffer->pBuffer = buf + SAFETYMARGIN;
 	pBuffer->pBuffer[size] = 0;
 	pBuffer->nBufferSize = size;
 
+	/* This is added here to make the buffer scaling above easy to express,
+	 * while taking the newline space into account
+	 * for the yy_buffer_append_newlines() call below.
+	 */
+	capacity += 3;
+
+	/* Skip UTF-8 byte order mark. */
+	if (pBuffer->nBufferSize >= BOM_SIZE
+	 && !memcmp(pBuffer->pBuffer, bom, BOM_SIZE))
+		pBuffer->pBuffer += BOM_SIZE;
+
 	/* Convert all line endings to LF and spaces */
 
 	char *mem = pBuffer->pBuffer;
-	uint32_t instring = 0;
+	int32_t lineCount = 0;
 
 	while (*mem) {
-		if (*mem == '\"')
-			instring = 1 - instring;
-
 		if ((mem[0] == '\\') && (mem[1] == '\"' || mem[1] == '\\')) {
 			mem += 2;
-		} else if (instring) {
-			mem += 1;
 		} else {
 			/* LF CR and CR LF */
-			if (((mem[0] == 10) && (mem[1] == 13))
+			if (((mem[0] == '\n') && (mem[1] == '\r'))
-			 || ((mem[0] == 13) && (mem[1] == 10))) {
+			 || ((mem[0] == '\r') && (mem[1] == '\n'))) {
-				mem[0] = ' ';
+				*mem++ = ' ';
-				mem[1] = '\n';
+				*mem++ = '\n';
-				mem += 2;
+				lineCount++;
 			/* LF and CR */
-			} else if ((mem[0] == 10) || (mem[0] == 13)) {
+			} else if ((mem[0] == '\n') || (mem[0] == '\r')) {
-				mem[0] = '\n';
+				*mem++ = '\n';
-				mem += 1;
+				lineCount++;
 			} else {
-				mem += 1;
+				mem++;
 			}
 		}
 	}
 
+	if (mem != pBuffer->pBuffer + size) {
+		nLineNo = lineCount + 1;
+		fatalerror("Found null character");
+	}
+
 	/* Remove comments */
 
 	mem = pBuffer->pBuffer;
-	instring = 0;
+	bool instring = false;
 
 	while (*mem) {
 		if (*mem == '\"')
-			instring = 1 - instring;
+			instring = !instring;
 
 		if ((mem[0] == '\\') && (mem[1] == '\"' || mem[1] == '\\')) {
 			mem += 2;
 		} else if (instring) {
-			mem += 1;
+			mem++;
 		} else {
 			/* Comments that start with ; anywhere in a line */
 			if (*mem == ';') {
@@ -228,31 +340,16 @@ YY_BUFFER_STATE yy_create_buffer(FILE *f)
 					*mem++ = ' ';
 			/* Comments that start with * at the start of a line */
 			} else if ((mem[0] == '\n') && (mem[1] == '*')) {
-				mem += 1;
+				mem++;
 				while (!((*mem == '\n') || (*mem == '\0')))
 					*mem++ = ' ';
 			} else {
-				mem += 1;
+				mem++;
 			}
 		}
 	}
 
-	/* Add newline if file doesn't end with one */
+	yy_buffer_append_newlines(pBuffer, capacity);
-	if (size == 0 || pBuffer->pBuffer[size - 1] != '\n')
-		yy_buffer_append(pBuffer, capacity, '\n');
-
-	/* Add newline if \ will eat the last newline */
-	if (pBuffer->nBufferSize >= 2) {
-		size_t pos = pBuffer->nBufferSize - 2;
-
-		/* Skip spaces */
-		while (pos > 0 && pBuffer->pBuffer[pos] == ' ')
-			pos--;
-
-		if (pBuffer->pBuffer[pos] == '\\')
-			yy_buffer_append(pBuffer, capacity, '\n');
-	}
-
 	pBuffer->oAtLineStart = 1;
 	return pBuffer;
 }
@@ -376,6 +473,9 @@ void lex_Init(void)
 
 	nLexMaxLength = 0;
 	nFloating = 0;
+
+	pCurrentStringExpansion = NULL;
+	nNbStringExpansions = 0;
 }
 
 void lex_AddStrings(const struct sLexInitString *lex)
@@ -428,17 +528,17 @@ void yylex_GetFloatMaskAndFloatLen(uint32_t *pnFloatMask, uint32_t *pnFloatLen)
 
 	char *s = pLexBuffer;
 	uint32_t nOldFloatMask = 0;
-	uint32_t nFloatMask = tFloatingFirstChar[(int32_t)*s];
+	uint32_t nFloatMask = tFloatingFirstChar[(uint8_t)*s];
 
 	if (nFloatMask != 0) {
 		s++;
 		nOldFloatMask = nFloatMask;
-		nFloatMask &= tFloatingSecondChar[(int32_t)*s];
+		nFloatMask &= tFloatingSecondChar[(uint8_t)*s];
 
 		while (nFloatMask != 0) {
 			s++;
 			nOldFloatMask = nFloatMask;
-			nFloatMask &= tFloatingChars[(int32_t)*s];
+			nFloatMask &= tFloatingChars[(uint8_t)*s];
 		}
 	}
 
@@ -552,6 +652,7 @@ size_t yylex_ReadBracketedSymbol(char *dest, size_t index)
 	char ch;
 	size_t i = 0;
 	size_t length, maxLength;
+	const char *mode = NULL;
 
 	for (ch = *pLexBuffer;
 	     ch != '}' && ch != '"' && ch != '\n';
@@ -565,16 +666,42 @@ size_t yylex_ReadBracketedSymbol(char *dest, size_t index)
 				i += length;
 			else
 				fatalerror("Illegal character escape '%c'", ch);
+		} else if (ch == ':' && !mode) { /* Only grab 1st colon */
+			/* Use a whitelist of modes, which does prevent the
+			 * use of some features such as precision,
+			 * but also avoids a security flaw
+			 */
+			const char *acceptedModes = "bxXd";
+			/* Binary isn't natively supported,
+			 * so it's handled differently
+			 */
+			static const char * const formatSpecifiers[] = {
+				"", "%x", "%X", "%d"
+			};
+			/* Prevent reading out of bounds! */
+			const char *designatedMode;
+
+			if (i != 1)
+				fatalerror("Print types are exactly 1 character long");
+
+			designatedMode = strchr(acceptedModes, sym[i - 1]);
+			if (!designatedMode)
+				fatalerror("Illegal print type '%c'",
+					   sym[i - 1]);
+			mode = formatSpecifiers[designatedMode - acceptedModes];
+			/* Begin writing the symbol again */
+			i = 0;
 		} else {
 			yylex_SymbolWriteChar(sym, i++, ch);
 		}
 	}
 
+	/* Properly terminate the string */
 	yylex_SymbolWriteChar(sym, i, 0);
 
 	/* It's assumed we're writing to a T_STRING */
 	maxLength = MAXSTRLEN - index;
-	length = symvaluetostring(&dest[index], maxLength, sym);
+	length = symvaluetostring(&dest[index], maxLength, sym, mode);
 
 	if (*pLexBuffer == '}')
 		pLexBuffer++;
@@ -681,10 +808,10 @@ scanagain:
 		 * endings: "\r\n" is replaced by " \n" before the lexer has the
 		 * opportunity to see it.
 		 */
-		if (pLexBuffer[1] == ' ') {
+		if (pLexBuffer[1] == ' ' || pLexBuffer[1] == '\t') {
 			pLexBuffer += 2;
 			while (1) {
-				if (*pLexBuffer == ' ') {
+				if (*pLexBuffer == ' ' || *pLexBuffer == '\t') {
 					pLexBuffer++;
 				} else if (*pLexBuffer == '\n') {
 					pLexBuffer++;
@@ -731,7 +858,9 @@ scanagain:
 			return T_STRING;
 		} else if (*pLexBuffer == '{') {
 			pLexBuffer++;
-			yylex_ReadBracketedSymbol(yylval.tzString, 0);
+			size_t len = yylex_ReadBracketedSymbol(yylval.tzString,
+							       0);
+			yylval.tzString[len] = 0;
 			return T_STRING;
 		}
 
@@ -740,10 +869,22 @@ scanagain:
 		 * numeric literal, string, or bracketed symbol, so just return
 		 * the ASCII character.
 		 */
-		if (*pLexBuffer == '\n')
+		unsigned char ch = *pLexBuffer++;
+
+		if (ch == '\n')
 			AtLineStart = 1;
 
-		return *pLexBuffer++;
+		/*
+		 * Check for invalid unprintable characters.
+		 * They may not be readily apparent in a text editor,
+		 * so this is useful for identifying encoding problems.
+		 */
+		if (ch != 0
+		 && ch != '\n'
+		 && !(ch >= 0x20 && ch <= 0x7E))
+			fatalerror("Found garbage character: 0x%02X", ch);
+
+		return ch;
 	}
 
 	if (pLongestFixed == NULL || nFloatLen > pLongestFixed->nNameLength) {
@@ -760,8 +901,6 @@ scanagain:
 				goto scanagain;
 		}
 
-		pLexBuffer += nFloatLen;
-
 		if (token->nToken == T_ID && linestart)
 			return T_LABEL;
 		else
@@ -811,6 +950,7 @@ static uint32_t yylex_MACROARGS(void)
 				ch = '}';
 				break;
 			case ' ':
+			case '\t':
 				/*
 				 * Look for line continuation character after a
 				 * series of spaces. This is also useful for
@@ -819,7 +959,8 @@ static uint32_t yylex_MACROARGS(void)
 				 * opportunity to see it.
 				 */
 				while (1) {
-					if (*pLexBuffer == ' ') {
+					if (*pLexBuffer == ' '
+					 || *pLexBuffer == '\t') {
 						pLexBuffer++;
 					} else if (*pLexBuffer == '\n') {
 						pLexBuffer++;
@@ -879,14 +1020,32 @@ static uint32_t yylex_MACROARGS(void)
 	fatalerror("Internal error in %s", __func__);
 }
 
-uint32_t yylex(void)
+int yylex(void)
 {
+	int returnedChar;
 	switch (lexerstate) {
 	case LEX_STATE_NORMAL:
-		return yylex_NORMAL();
+		returnedChar = yylex_NORMAL();
+		break;
 	case LEX_STATE_MACROARGS:
-		return yylex_MACROARGS();
+		returnedChar = yylex_MACROARGS();
+		break;
 	default:
 		fatalerror("%s: Internal error.", __func__);
 	}
+
+	/* Check if string expansions were fully read */
+	while (pCurrentStringExpansion
+	    && pCurrentStringExpansion->pBuffer == pLexBufferRealStart
+	    && pCurrentStringExpansion->pBufferPos <= pLexBuffer) {
+		struct sStringExpansionPos *pParent =
+			pCurrentStringExpansion->pParent;
+		free(pCurrentStringExpansion->tzName);
+		free(pCurrentStringExpansion);
+
+		pCurrentStringExpansion = pParent;
+		nNbStringExpansions--;
+	}
+
+	return returnedChar;
 }

src/asm/main.c

@@ -21,6 +21,7 @@
 #include "asm/lexer.h"
 #include "asm/output.h"
 #include "asm/main.h"
+#include "asm/charmap.h"
 
 #include "extern/err.h"
 
@@ -37,7 +38,7 @@ char **cldefines;
 
 clock_t nStartClock, nEndClock;
 int32_t nLineNo;
-uint32_t nTotalLines, nPass, nPC, nIFDepth, nUnionDepth, nErrors;
+uint32_t nTotalLines, nPC, nIFDepth, nUnionDepth, nErrors;
 bool skipElif;
 uint32_t unionStart[128], unionSize[128];
 
@@ -238,12 +239,13 @@ static void opt_ParseDefines(void)
  */
 void verror(const char *fmt, va_list args)
 {
-	fprintf(stderr, "ERROR: ");
+	fputs("ERROR: ", stderr);
 	fstk_Dump();
-	fprintf(stderr, ":\n    ");
+	fputs(":\n    ", stderr);
 	vfprintf(stderr, fmt, args);
-	fprintf(stderr, "\n");
+	fputc('\n', stderr);
-	nErrors += 1;
+	fstk_DumpStringExpansions();
+	nErrors++;
 }
 
 void yyerror(const char *fmt, ...)
@@ -275,11 +277,12 @@ void warning(const char *fmt, ...)
 
 	va_start(args, fmt);
 
-	fprintf(stderr, "warning: ");
+	fputs("warning: ", stderr);
 	fstk_Dump();
-	fprintf(stderr, ":\n    ");
+	fputs(":\n    ", stderr);
 	vfprintf(stderr, fmt, args);
-	fprintf(stderr, "\n");
+	fputc('\n', stderr);
+	fstk_DumpStringExpansions();
 
 	va_end(args);
 }
@@ -288,7 +291,8 @@ static void print_usage(void)
 {
 	printf(
 "usage: rgbasm [-EhLVvw] [-b chars] [-Dname[=value]] [-g chars] [-i path]\n"
-"              [-M dependfile] [-o outfile] [-p pad_value] file.asm\n");
+"              [-M dependfile] [-o outfile] [-p pad_value]\n"
+"              [-r recursion_depth] file.asm\n");
 	exit(1);
 }
 
@@ -315,6 +319,8 @@ int main(int argc, char *argv[])
 
 	/* yydebug=1; */
 
+	nMaxRecursionDepth = 64;
+
 	DefaultOptions.gbgfx[0] = '0';
 	DefaultOptions.gbgfx[1] = '1';
 	DefaultOptions.gbgfx[2] = '2';
@@ -332,7 +338,7 @@ int main(int argc, char *argv[])
 
 	newopt = CurrentOptions;
 
-	while ((ch = getopt(argc, argv, "b:D:Eg:hi:LM:o:p:Vvw")) != -1) {
+	while ((ch = getopt(argc, argv, "b:D:Eg:hi:LM:o:p:r:Vvw")) != -1) {
 		switch (ch) {
 		case 'b':
 			if (strlen(optarg) == 2) {
@@ -386,6 +392,12 @@ int main(int argc, char *argv[])
 				errx(1, "Argument for option 'p' must be between 0 and 0xFF");
 
 			break;
+		case 'r':
+			nMaxRecursionDepth = strtoul(optarg, &ep, 0);
+
+			if (optarg[0] == '\0' || *ep != '\0')
+				errx(1, "Invalid argument for option 'r'");
+			break;
 		case 'V':
 			printf("rgbasm %s\n", get_package_version_string());
 			exit(0);
@@ -432,21 +444,18 @@ int main(int argc, char *argv[])
 	skipElif = true;
 	nUnionDepth = 0;
 	nPC = 0;
-	nPass = 1;
 	nErrors = 0;
-	sym_PrepPass1();
+	sym_Init();
 	sym_SetExportAll(CurrentOptions.exportall);
 	fstk_Init(tzMainfile);
 	opt_ParseDefines();
-
+	charmap_InitMain();
-	if (CurrentOptions.verbose)
-		printf("Pass 1...\n");
 
 	yy_set_state(LEX_STATE_NORMAL);
 	opt_SetCurrentOptions(&DefaultOptions);
 
 	if (yyparse() != 0 || nErrors != 0)
-		errx(1, "Assembly aborted in pass 1 (%ld errors)!", nErrors);
+		errx(1, "Assembly aborted (%ld errors)!", nErrors);
 
 	if (nIFDepth != 0)
 		errx(1, "Unterminated IF construct (%ld levels)!", nIFDepth);
@@ -456,27 +465,6 @@ int main(int argc, char *argv[])
 		     nUnionDepth);
 	}
 
-	nTotalLines = 0;
-	nLineNo = 1;
-	nIFDepth = 0;
-	skipElif = true;
-	nUnionDepth = 0;
-	nPC = 0;
-	nPass = 2;
-	nErrors = 0;
-	sym_PrepPass2();
-	out_PrepPass2();
-	fstk_Init(tzMainfile);
-	yy_set_state(LEX_STATE_NORMAL);
-	opt_SetCurrentOptions(&DefaultOptions);
-	opt_ParseDefines();
-
-	if (CurrentOptions.verbose)
-		printf("Pass 2...\n");
-
-	if (yyparse() != 0 || nErrors != 0)
-		errx(1, "Assembly aborted in pass 2 (%ld errors)!", nErrors);
-
 	double timespent;
 
 	nEndClock = clock();
@@ -491,6 +479,10 @@ int main(int argc, char *argv[])
 			printf("(%d lines/minute)\n",
 			       (int)(60 / timespent * nTotalLines));
 	}
+
+	out_CheckErrors();
+	/* If no path specified, don't write file */
+	if (tzObjectname != NULL)
 		out_WriteObject();
 	return 0;
 }

src/asm/output.c

@@ -1,7 +1,7 @@
 /*
  * This file is part of RGBDS.
  *
- * Copyright (c) 1997-2018, Carsten Sorensen and RGBDS contributors.
+ * Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
  *
  * SPDX-License-Identifier: MIT
  */
@@ -10,6 +10,7 @@
  * Outputs an objectfile
  */
 
+#include <assert.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdint.h>
@@ -259,37 +260,37 @@ static void writesection(struct Section *pSect, FILE *f)
  */
 static void writesymbol(struct sSymbol *pSym, FILE *f)
 {
-	char symname[MAXSYMLEN * 2 + 1];
 	uint32_t type;
 	uint32_t offset;
 	int32_t sectid;
 
-	if (pSym->nType & SYMF_IMPORT) {
+	if (!(pSym->nType & SYMF_DEFINED)) {
-		/* Symbol should be imported */
+		type = SYM_IMPORT;
-		strcpy(symname, pSym->tzName);
+	} else if (pSym->nType & SYMF_EXPORT) {
+		type = SYM_EXPORT;
+	} else {
+		type = SYM_LOCAL;
+	}
+
+	switch (type) {
+	case SYM_LOCAL:
+		offset = pSym->nValue;
+		sectid = getsectid(pSym->pSection);
+		break;
+	case SYM_IMPORT:
 		offset = 0;
 		sectid = -1;
-		type = SYM_IMPORT;
+		break;
-	} else {
+	case SYM_EXPORT:
-		strcpy(symname, pSym->tzName);
-
-		if (pSym->nType & SYMF_EXPORT) {
-			/* Symbol should be exported */
-			type = SYM_EXPORT;
 		offset = pSym->nValue;
 		if (pSym->nType & SYMF_CONST)
 			sectid = -1;
 		else
 			sectid = getsectid(pSym->pSection);
-		} else {
+		break;
-			/* Symbol is local to this file */
-			type = SYM_LOCAL;
-			offset = pSym->nValue;
-			sectid = getsectid(pSym->pSection);
-		}
 	}
 
-	fputstring(symname, f);
+	fputstring(pSym->tzName, f);
 	fputc(type, f);
 
 	if (type != SYM_IMPORT) {
@@ -311,7 +312,7 @@ static uint32_t addsymbol(struct sSymbol *pSym)
 	struct PatchSymbol *pPSym, **ppPSym;
 	uint32_t hash;
 
-	hash = calchash(pSym->tzName);
+	hash = sym_CalcHash(pSym->tzName);
 	ppPSym = &(tHashedPatchSymbols[hash]);
 
 	while ((*ppPSym) != NULL) {
@@ -383,10 +384,15 @@ void createpatch(uint32_t type, struct Expression *expr)
 {
 	struct Patch *pPatch;
 	uint16_t rpndata;
-	uint8_t rpnexpr[2048];
+	uint8_t *rpnexpr;
 	char tzSym[512];
 	uint32_t rpnptr = 0, symptr;
 
+	rpnexpr = malloc(expr->nRPNPatchSize);
+
+	if (rpnexpr == NULL)
+		fatalerror("No memory for patch RPN expression");
+
 	pPatch = allocpatch();
 	pPatch->nType = type;
 	strcpy(pPatch->tzFilename, tzCurrentFileName);
@@ -468,12 +474,11 @@ void createpatch(uint32_t type, struct Expression *expr)
 		}
 	}
 
-	pPatch->pRPN = malloc(rpnptr);
+	assert(rpnptr == expr->nRPNPatchSize);
-	if (pPatch->pRPN != NULL) {
+
-		memcpy(pPatch->pRPN, rpnexpr, rpnptr);
+	pPatch->pRPN = rpnexpr;
 	pPatch->nRPNSize = rpnptr;
 }
-}
 
 /*
  * A quick check to see if we have an initialized section
@@ -507,8 +512,9 @@ static void checksectionoverflow(uint32_t delta_size)
 {
 	uint32_t maxsize = getmaxsectionsize(pCurrentSection->nType,
 					  pCurrentSection->pzName);
+	uint32_t new_size = pCurrentSection->nPC + delta_size;
 
-	if (pCurrentSection->nPC + delta_size > maxsize) {
+	if (new_size > maxsize) {
 		/*
 		 * This check is here to trap broken code that generates
 		 * sections that are too big and to prevent the assembler from
@@ -516,8 +522,36 @@ static void checksectionoverflow(uint32_t delta_size)
 		 * memory.
 		 * The real check must be done at the linking stage.
 		 */
-		fatalerror("Section '%s' is too big (max size = 0x%X bytes).",
+		fatalerror("Section '%s' is too big (max size = 0x%X bytes, reached 0x%X).",
-			   pCurrentSection->pzName, maxsize);
+			   pCurrentSection->pzName, maxsize, new_size);
+	}
+}
+
+/*
+ * Check for errors that could happen while writing an object file
+ * This is important as out_WriteObject is skipped entirely when `-o` is omitted
+ * Therefore, errors such as memory allocations still should be handled in
+ * out_WriteObject and not here
+ */
+void out_CheckErrors(void)
+{
+	/* Local symbols cannot be imported from elsewhere */
+	struct PatchSymbol *pSym = pPatchSymbols;
+
+	while (pSym) {
+		struct sSymbol *pSymbol = pSym->pSymbol;
+
+		if (!(pSymbol->nType & SYMF_DEFINED)
+		   && pSymbol->nType & SYMF_LOCAL) {
+			char *name = pSymbol->tzName;
+			char *localPtr = strchr(name, '.');
+
+			if (localPtr)
+				name = localPtr;
+			errx(1, "%s(%u) : '%s' not defined",
+			     pSymbol->tzFileName, pSymbol->nFileLine, name);
+		}
+		pSym = pSym->pNext;
 	}
 }
 
@@ -527,20 +561,15 @@ static void checksectionoverflow(uint32_t delta_size)
 void out_WriteObject(void)
 {
 	FILE *f;
+	struct PatchSymbol *pSym;
+	struct Section *pSect;
 
 	addexports();
 
-	/* If no path specified, don't write file */
-	if (tzObjectname == NULL)
-		return;
-
 	f = fopen(tzObjectname, "wb");
 	if (f == NULL)
 		fatalerror("Couldn't write file '%s'\n", tzObjectname);
 
-	struct PatchSymbol *pSym;
-	struct Section *pSect;
-
 	fwrite(RGBDS_OBJECT_VERSION_STRING, 1,
 	       strlen(RGBDS_OBJECT_VERSION_STRING), f);
 
@@ -562,22 +591,6 @@ void out_WriteObject(void)
 	fclose(f);
 }
 
-/*
- * Prepare for pass #2
- */
-void out_PrepPass2(void)
-{
-	struct Section *pSect;
-
-	pSect = pSectionList;
-	while (pSect) {
-		pSect->nPC = 0;
-		pSect = pSect->pNext;
-	}
-	pCurrentSection = NULL;
-	pSectionStack = NULL;
-}
-
 /*
  * Set the objectfilename
  */
@@ -586,10 +599,6 @@ void out_SetFileName(char *s)
 	tzObjectname = s;
 	if (CurrentOptions.verbose)
 		printf("Output filename %s\n", s);
-
-	pSectionList = NULL;
-	pCurrentSection = NULL;
-	pPatchSymbols = NULL;
 }
 
 /*
@@ -636,7 +645,6 @@ struct Section *out_FindSection(char *pzName, uint32_t secttype, int32_t org,
 	pSect->pNext = NULL;
 	pSect->pPatches = NULL;
 	pSect->charmap = NULL;
-	pPatchSymbols = NULL;
 
 	/* It is only needed to allocate memory for ROM sections. */
 	if (secttype == SECT_ROM0 || secttype == SECT_ROMX) {
@@ -662,7 +670,7 @@ void out_SetCurrentSection(struct Section *pSect)
 		fatalerror("Cannot change the section within a UNION");
 
 	pCurrentSection = pSect;
-	nPC = pSect->nPC;
+	nPC = (pSect != NULL) ? pSect->nPC : 0;
 
 	pPCSymbol->nValue = nPC;
 	pPCSymbol->pSection = pCurrentSection;
@@ -705,9 +713,7 @@ void out_AbsByteBypassCheck(int32_t b)
 {
 	checksectionoverflow(1);
 	b &= 0xFF;
-	if (nPass == 2)
 	pCurrentSection->tData[nPC] = b;
-
 	pCurrentSection->nPC += 1;
 	nPC += 1;
 	pPCSymbol->nValue += 1;
@@ -772,17 +778,15 @@ void out_RelByte(struct Expression *expr)
 	checkcodesection();
 	checksectionoverflow(1);
 	if (rpn_isReloc(expr)) {
-		if (nPass == 2) {
 		pCurrentSection->tData[nPC] = 0;
 		createpatch(PATCH_BYTE, expr);
-		}
 		pCurrentSection->nPC += 1;
 		nPC += 1;
 		pPCSymbol->nValue += 1;
 	} else {
 		out_AbsByte(expr->nVal);
 	}
-	rpn_Reset(expr);
+	rpn_Free(expr);
 }
 
 /*
@@ -793,10 +797,8 @@ void out_AbsWord(int32_t b)
 	checkcodesection();
 	checksectionoverflow(2);
 	b &= 0xFFFF;
-	if (nPass == 2) {
 	pCurrentSection->tData[nPC] = b & 0xFF;
 	pCurrentSection->tData[nPC + 1] = b >> 8;
-	}
 	pCurrentSection->nPC += 2;
 	nPC += 2;
 	pPCSymbol->nValue += 2;
@@ -808,24 +810,19 @@ void out_AbsWord(int32_t b)
  */
 void out_RelWord(struct Expression *expr)
 {
-	uint32_t b;
-
 	checkcodesection();
 	checksectionoverflow(2);
-	b = expr->nVal & 0xFFFF;
 	if (rpn_isReloc(expr)) {
-		if (nPass == 2) {
+		pCurrentSection->tData[nPC] = 0;
-			pCurrentSection->tData[nPC] = b & 0xFF;
+		pCurrentSection->tData[nPC + 1] = 0;
-			pCurrentSection->tData[nPC + 1] = b >> 8;
 		createpatch(PATCH_WORD_L, expr);
-		}
 		pCurrentSection->nPC += 2;
 		nPC += 2;
 		pPCSymbol->nValue += 2;
 	} else {
 		out_AbsWord(expr->nVal);
 	}
-	rpn_Reset(expr);
+	rpn_Free(expr);
 }
 
 /*
@@ -835,12 +832,10 @@ void out_AbsLong(int32_t b)
 {
 	checkcodesection();
 	checksectionoverflow(sizeof(int32_t));
-	if (nPass == 2) {
 	pCurrentSection->tData[nPC] = b & 0xFF;
 	pCurrentSection->tData[nPC + 1] = b >> 8;
 	pCurrentSection->tData[nPC + 2] = b >> 16;
 	pCurrentSection->tData[nPC + 3] = b >> 24;
-	}
 	pCurrentSection->nPC += 4;
 	nPC += 4;
 	pPCSymbol->nValue += 4;
@@ -852,26 +847,21 @@ void out_AbsLong(int32_t b)
  */
 void out_RelLong(struct Expression *expr)
 {
-	int32_t b;
-
 	checkcodesection();
 	checksectionoverflow(4);
-	b = expr->nVal;
 	if (rpn_isReloc(expr)) {
-		if (nPass == 2) {
+		pCurrentSection->tData[nPC] = 0;
-			pCurrentSection->tData[nPC] = b & 0xFF;
+		pCurrentSection->tData[nPC + 1] = 0;
-			pCurrentSection->tData[nPC + 1] = b >> 8;
+		pCurrentSection->tData[nPC + 2] = 0;
-			pCurrentSection->tData[nPC + 2] = b >> 16;
+		pCurrentSection->tData[nPC + 3] = 0;
-			pCurrentSection->tData[nPC + 3] = b >> 24;
 		createpatch(PATCH_LONG_L, expr);
-		}
 		pCurrentSection->nPC += 4;
 		nPC += 4;
 		pPCSymbol->nValue += 4;
 	} else {
 		out_AbsLong(expr->nVal);
 	}
-	rpn_Reset(expr);
+	rpn_Free(expr);
 }
 
 /*
@@ -884,15 +874,13 @@ void out_PCRelByte(struct Expression *expr)
 	checksectionoverflow(1);
 
 	/* Always let the linker calculate the offset. */
-	if (nPass == 2) {
 	pCurrentSection->tData[nPC] = 0;
 	createpatch(PATCH_BYTE_JR, expr);
-	}
 	pCurrentSection->nPC += 1;
 	nPC += 1;
 	pPCSymbol->nValue += 1;
 
-	rpn_Reset(expr);
+	rpn_Free(expr);
 }
 
 /*
@@ -915,13 +903,12 @@ void out_BinaryFile(char *s)
 	checkcodesection();
 	checksectionoverflow(fsize);
 
-	if (nPass == 2) {
 	int32_t dest = nPC;
 	int32_t todo = fsize;
 
 	while (todo--)
 		pCurrentSection->tData[dest++] = fgetc(f);
-	}
+
 	pCurrentSection->nPC += fsize;
 	nPC += fsize;
 	pPCSymbol->nValue += fsize;
@@ -958,13 +945,12 @@ void out_BinaryFileSlice(char *s, int32_t start_pos, int32_t length)
 	checkcodesection();
 	checksectionoverflow(length);
 
-	if (nPass == 2) {
 	int32_t dest = nPC;
 	int32_t todo = length;
 
 	while (todo--)
 		pCurrentSection->tData[dest++] = fgetc(f);
-	}
+
 	pCurrentSection->nPC += length;
 	nPC += length;
 	pPCSymbol->nValue += length;

src/asm/rgbasm.1

@@ -1,11 +1,11 @@
 .\"
 .\" This file is part of RGBDS.
 .\"
-.\" Copyright (c) 2010-2018, Anthony J. Bentley and RGBDS contributors.
+.\" Copyright (c) 2010-2019, Anthony J. Bentley and RGBDS contributors.
 .\"
 .\" SPDX-License-Identifier: MIT
 .\"
-.Dd February 24, 2018
+.Dd July 8, 2019
 .Dt RGBASM 1
 .Os RGBDS Manual
 .Sh NAME
@@ -21,11 +21,18 @@
 .Op Fl M Ar dependfile
 .Op Fl o Ar outfile
 .Op Fl p Ar pad_value
+.Op Fl r Ar recursion_depth
 .Ar file
 .Sh DESCRIPTION
 The
 .Nm
 program creates an object file from an assembly source file.
+The input
+.Ar file
+can be a file path, or
+.Cm \-
+denoting
+.Cm stdin .
 Its arguments are as follows:
 .Bl -tag -width Ds
 .It Fl b Ar chars
@@ -71,6 +78,8 @@ Write an object file to the given filename.
 .It Fl p Ar pad_value
 When padding an image, pad with this value.
 The default is 0x00.
+.It Fl r Ar recursion_depth
+Specifies the recursion depth at which RGBASM will assume being in an infinite loop.
 .It Fl V
 Print the version of the program and exit.
 .It Fl v
@@ -79,12 +88,20 @@ Be verbose.
 Disable warning output.
 .El
 .Sh EXAMPLES
-Assembling a basic source file is simple:
+You can assemble a source file in two ways.
+Straight forward way:
 .Pp
 .Bd -literal -offset indent
 $ rgbasm -o bar.o foo.asm
 .Ed
 .Pp
+Pipes way:
+.Pp
+.Bd -literal -offset indent
+$ cat foo.asm | rgbasm -o bar.o -
+$ rgbasm -o bar.o - < foo.asm
+.Ed
+.Pp
 The resulting object file is not yet a usable ROM image \(em it must first be
 run through
 .Xr rgblink 1

src/asm/rgbasm.5

@@ -455,8 +455,7 @@ String equates can't be exported or imported.
 .Sy Important note :
 An EQUS can be expanded to a string that contains another EQUS
 and it will be expanded as well.
-This means that, if you aren't careful, you may trap the assembler into an
+If this creates an infinite loop, RGBASM will error out once a certain depth is reached. See the -r command-line option.
-infinite loop if there's a circular dependency in the expansions.
 Also, a MACRO can have inside an EQUS which references the same MACRO, which has
 the same problem.
 .Pp
@@ -584,16 +583,15 @@ If you want to use the rest, you need to use the keyword
 .Ic SHIFT .
 .Pp
 Line continuations work as usual inside macros or lists of arguments of macros.
-Strings, however, are a bit trickier.
+However, some characters need to be escaped, as in the following example:
-The following example shows how to use strings as arguments for a macro:
 .Pp
 .Bd -literal -offset indent
 PrintMacro : MACRO
     PRINTT \[rs]1
 ENDM
 
-    PrintMacro STRCAT(\[rs]"Hello\[rs]"\[rs],  \[rs]
+    PrintMacro STRCAT("Hello"\[rs],  \[rs]
-                      \[rs]" world\[rs]\[rs]n\[rs]")
+                      " world\[rs]\[rs]n")
 .Ed
 .Pp
 .Ic SHIFT
@@ -1079,7 +1077,20 @@ within a string.
 This will examine the type of the symbol and insert its value accordingly.
 If symbol is a string symbol, the symbols value is simply copied.
 If it's a numeric symbol, the value is converted to hexadecimal notation and
-inserted as a string.
+inserted as a string with a dollar prepended.
+.Pp
+It's possible to change the way numeric symbols are converted by specifying
+a print type like so:
+.Sy {d:symbol}
+Valid print types are:
+.Bl -column -offset indent
+.It Sy Print type Ta Sy Format Ta Sy Example
+.It Li d Ta Decimal Ta 42
+.It Li x Ta Lowercase hexadecimal Ta 2a
+.It Li X Ta Uppercase hexadecimal Ta 2A
+.It Li b Ta Binary Ta 101010
+.Pp
+Note that print types should only be used with numeric values, not strings.
 .Pp
 HINT: The
 .Sy {symbol}
@@ -1127,9 +1138,30 @@ CHARMAP "&iacute", 20
 CHARMAP "A", 128
 .Ed
 .Pp
+It is possible to create multiple character maps and then switch between them
+as desired. This can be used to encode debug information in ASCII and use
+a different encoding for other purposes, for example. Initially, there is
+one character map called
+.Sy main
+and it is automatically selected as the current character map from the
+beginning. There is also a character map stack that can be used to save and
+restore which character map is currently active.
+.Bl -column "NEWCHARMAP name, basename"
+.It Sy Command Ta Sy Meaning
+.It Ic NEWCHARMAP Ar name Ta Creates a new, empty character map called
+.Ic name .
+.It Ic NEWCHARMAP Ar name , basename Ta Creates a new character map called
+. Ic name ,
+copied from character map
+.Ic basename .
+.It Ic SETCHARMAP Ar name Ta Switch to character map Ic name .
+.It Ic PUSHC Ta Push the current character map onto the stack.
+.It Ic POPC Ta Pop a character map off the stack and switch to it.
+.El
+.Pp
 .Sy Note:
 Character maps affect all strings in the file from the point in which they are
-defined.
+defined, until switching to a different character map.
 This means that any string that the code may want to print as debug information
 will also be affected by it.
 .Pp

src/asm/rpn.c

@@ -10,6 +10,7 @@
  * Controls RPN expressions for objectfiles
  */
 
+#include <assert.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -24,12 +25,39 @@
 void mergetwoexpressions(struct Expression *expr, const struct Expression *src1,
 			 const struct Expression *src2)
 {
-	*expr = *src1;
+	assert(src1->tRPN != NULL && src2->tRPN != NULL);
-	memcpy(&(expr->tRPN[expr->nRPNLength]), src2->tRPN, src2->nRPNLength);
 
-	expr->nRPNLength += src2->nRPNLength;
+	if (src1->nRPNLength + src2->nRPNLength > MAXRPNLEN)
-	expr->isReloc |= src2->isReloc;
+		fatalerror("RPN expression is too large");
-	expr->isPCRel |= src2->isPCRel;
+
+	uint32_t len = src1->nRPNLength + src2->nRPNLength;
+
+	expr->nVal = 0;
+	expr->tRPN = src1->tRPN;
+
+	if (src1->nRPNCapacity >= len) {
+		expr->nRPNCapacity = src1->nRPNCapacity;
+	} else {
+		uint32_t cap1 = src1->nRPNCapacity;
+		uint32_t cap2 = src2->nRPNCapacity;
+		uint32_t cap = (cap1 > cap2) ? cap1 : cap2;
+
+		if (len > cap)
+			cap = (cap <= MAXRPNLEN / 2) ? cap * 2 : MAXRPNLEN;
+
+		expr->nRPNCapacity = cap;
+		expr->tRPN = realloc(expr->tRPN, expr->nRPNCapacity);
+		if (expr->tRPN == NULL)
+			fatalerror("No memory for RPN expression");
+	}
+
+	memcpy(expr->tRPN + src1->nRPNLength, src2->tRPN, src2->nRPNLength);
+	free(src2->tRPN);
+
+	expr->nRPNLength = len;
+	expr->nRPNPatchSize = src1->nRPNPatchSize + src2->nRPNPatchSize;
+	expr->nRPNOut = 0;
+	expr->isReloc = src1->isReloc || src2->isReloc;
 }
 
 #define joinexpr() mergetwoexpressions(expr, src1, src2)
@@ -37,20 +65,46 @@ void mergetwoexpressions(struct Expression *expr, const struct Expression *src1,
 /*
  * Add a byte to the RPN expression
  */
-void pushbyte(struct Expression *expr, int b)
+void pushbyte(struct Expression *expr, uint8_t b)
 {
-	expr->tRPN[expr->nRPNLength++] = b & 0xFF;
+	if (expr->nRPNLength == expr->nRPNCapacity) {
+		if (expr->nRPNCapacity == 0)
+			expr->nRPNCapacity = 256;
+		else if (expr->nRPNCapacity == MAXRPNLEN)
+			fatalerror("RPN expression is too large");
+		else if (expr->nRPNCapacity > MAXRPNLEN / 2)
+			expr->nRPNCapacity = MAXRPNLEN;
+		else
+			expr->nRPNCapacity *= 2;
+		expr->tRPN = realloc(expr->tRPN, expr->nRPNCapacity);
+
+		if (expr->tRPN == NULL)
+			fatalerror("No memory for RPN expression");
+	}
+
+	expr->tRPN[expr->nRPNLength++] = b;
 }
 
 /*
- * Reset the RPN module
+ * Init the RPN expression
  */
-void rpn_Reset(struct Expression *expr)
+void rpn_Init(struct Expression *expr)
 {
+	expr->tRPN = NULL;
+	expr->nRPNCapacity = 0;
 	expr->nRPNLength = 0;
+	expr->nRPNPatchSize = 0;
 	expr->nRPNOut = 0;
 	expr->isReloc = 0;
-	expr->isPCRel = 0;
+}
+
+/*
+ * Free the RPN expression
+ */
+void rpn_Free(struct Expression *expr)
+{
+	free(expr->tRPN);
+	rpn_Init(expr);
 }
 
 /*
@@ -72,45 +126,32 @@ uint32_t rpn_isReloc(const struct Expression *expr)
 	return expr->isReloc;
 }
 
-/*
- * Determine if the current expression can be pc-relative
- */
-uint32_t rpn_isPCRelative(const struct Expression *expr)
-{
-	return expr->isPCRel;
-}
-
 /*
  * Add symbols, constants and operators to expression
  */
 void rpn_Number(struct Expression *expr, uint32_t i)
 {
-	rpn_Reset(expr);
+	rpn_Init(expr);
 	pushbyte(expr, RPN_CONST);
 	pushbyte(expr, i);
 	pushbyte(expr, i >> 8);
 	pushbyte(expr, i >> 16);
 	pushbyte(expr, i >> 24);
 	expr->nVal = i;
+	expr->nRPNPatchSize += 5;
 }
 
 void rpn_Symbol(struct Expression *expr, char *tzSym)
 {
 	if (!sym_isConstant(tzSym)) {
-		const struct sSymbol *psym;
+		rpn_Init(expr);
-
+		sym_Ref(tzSym);
-		rpn_Reset(expr);
-
-		psym = sym_FindSymbol(tzSym);
-
-		if (psym == NULL || psym->pSection == pCurrentSection
-		    || psym->pSection == NULL)
-			expr->isPCRel = 1;
 		expr->isReloc = 1;
 		pushbyte(expr, RPN_SYM);
 		while (*tzSym)
 			pushbyte(expr, *tzSym++);
 		pushbyte(expr, 0);
+		expr->nRPNPatchSize += 5;
 	} else {
 		rpn_Number(expr, sym_GetConstantValue(tzSym));
 	}
@@ -118,7 +159,7 @@ void rpn_Symbol(struct Expression *expr, char *tzSym)
 
 void rpn_BankSelf(struct Expression *expr)
 {
-	rpn_Reset(expr);
+	rpn_Init(expr);
 
 	/*
 	 * This symbol is not really relocatable, but this makes the assembler
@@ -127,6 +168,7 @@ void rpn_BankSelf(struct Expression *expr)
 	expr->isReloc = 1;
 
 	pushbyte(expr, RPN_BANK_SELF);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_BankSymbol(struct Expression *expr, char *tzSym)
@@ -138,19 +180,14 @@ void rpn_BankSymbol(struct Expression *expr, char *tzSym)
 	}
 
 	if (!sym_isConstant(tzSym)) {
-		rpn_Reset(expr);
+		rpn_Init(expr);
-
+		sym_Ref(tzSym);
-		/*
-		 * Check that the symbol exists by evaluating and discarding the
-		 * value.
-		 */
-		sym_GetValue(tzSym);
-
 		expr->isReloc = 1;
 		pushbyte(expr, RPN_BANK_SYM);
 		while (*tzSym)
 			pushbyte(expr, *tzSym++);
 		pushbyte(expr, 0);
+		expr->nRPNPatchSize += 5;
 	} else {
 		yyerror("BANK argument must be a relocatable identifier");
 	}
@@ -158,7 +195,7 @@ void rpn_BankSymbol(struct Expression *expr, char *tzSym)
 
 void rpn_BankSection(struct Expression *expr, char *tzSectionName)
 {
-	rpn_Reset(expr);
+	rpn_Init(expr);
 
 	/*
 	 * This symbol is not really relocatable, but this makes the assembler
@@ -167,37 +204,48 @@ void rpn_BankSection(struct Expression *expr, char *tzSectionName)
 	expr->isReloc = 1;
 
 	pushbyte(expr, RPN_BANK_SECT);
-	while (*tzSectionName)
+	expr->nRPNPatchSize++;
+
+	while (*tzSectionName) {
 		pushbyte(expr, *tzSectionName++);
+		expr->nRPNPatchSize++;
+	}
+
 	pushbyte(expr, 0);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_CheckHRAM(struct Expression *expr, const struct Expression *src)
 {
 	*expr = *src;
 	pushbyte(expr, RPN_HRAM);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGNOT(struct Expression *expr, const struct Expression *src)
 {
 	*expr = *src;
+	expr->nVal = !expr->nVal;
 	pushbyte(expr, RPN_LOGUNNOT);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGOR(struct Expression *expr, const struct Expression *src1,
 	       const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal || src2->nVal);
+	expr->nVal = (src1->nVal || src2->nVal);
 	pushbyte(expr, RPN_LOGOR);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGAND(struct Expression *expr, const struct Expression *src1,
 		const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal && src2->nVal);
+	expr->nVal = (src1->nVal && src2->nVal);
 	pushbyte(expr, RPN_LOGAND);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_HIGH(struct Expression *expr, const struct Expression *src)
@@ -221,6 +269,8 @@ void rpn_HIGH(struct Expression *expr, const struct Expression *src)
 	pushbyte(expr, 0);
 
 	pushbyte(expr, RPN_AND);
+
+	expr->nRPNPatchSize += 12;
 }
 
 void rpn_LOW(struct Expression *expr, const struct Expression *src)
@@ -236,94 +286,107 @@ void rpn_LOW(struct Expression *expr, const struct Expression *src)
 	pushbyte(expr, 0);
 
 	pushbyte(expr, RPN_AND);
+
+	expr->nRPNPatchSize += 6;
 }
 
 void rpn_LOGEQU(struct Expression *expr, const struct Expression *src1,
 		const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal == src2->nVal);
+	expr->nVal = (src1->nVal == src2->nVal);
 	pushbyte(expr, RPN_LOGEQ);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGGT(struct Expression *expr, const struct Expression *src1,
 	       const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal > src2->nVal);
+	expr->nVal = (src1->nVal > src2->nVal);
 	pushbyte(expr, RPN_LOGGT);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGLT(struct Expression *expr, const struct Expression *src1,
 	       const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal < src2->nVal);
+	expr->nVal = (src1->nVal < src2->nVal);
 	pushbyte(expr, RPN_LOGLT);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGGE(struct Expression *expr, const struct Expression *src1,
 	       const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal >= src2->nVal);
+	expr->nVal = (src1->nVal >= src2->nVal);
 	pushbyte(expr, RPN_LOGGE);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGLE(struct Expression *expr, const struct Expression *src1,
 	       const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal <= src2->nVal);
+	expr->nVal = (src1->nVal <= src2->nVal);
 	pushbyte(expr, RPN_LOGLE);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_LOGNE(struct Expression *expr, const struct Expression *src1,
 	       const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal != src2->nVal);
+	expr->nVal = (src1->nVal != src2->nVal);
 	pushbyte(expr, RPN_LOGNE);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_ADD(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal + src2->nVal);
+	expr->nVal = ((uint32_t)src1->nVal + (uint32_t)src2->nVal);
 	pushbyte(expr, RPN_ADD);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_SUB(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal - src2->nVal);
+	expr->nVal = ((uint32_t)src1->nVal - (uint32_t)src2->nVal);
 	pushbyte(expr, RPN_SUB);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_XOR(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal ^ src2->nVal);
+	expr->nVal = (src1->nVal ^ src2->nVal);
 	pushbyte(expr, RPN_XOR);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_OR(struct Expression *expr, const struct Expression *src1,
 	    const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal | src2->nVal);
+	expr->nVal = (src1->nVal | src2->nVal);
 	pushbyte(expr, RPN_OR);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_AND(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal & src2->nVal);
+	expr->nVal = (src1->nVal & src2->nVal);
 	pushbyte(expr, RPN_AND);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_SHL(struct Expression *expr, const struct Expression *src1,
@@ -331,6 +394,7 @@ void rpn_SHL(struct Expression *expr, const struct Expression *src1,
 {
 	joinexpr();
 
+	if (!expr->isReloc) {
 		if (src1->nVal < 0)
 			warning("Left shift of negative value: %d", src1->nVal);
 
@@ -339,58 +403,86 @@ void rpn_SHL(struct Expression *expr, const struct Expression *src1,
 		else if (src2->nVal >= 32)
 			fatalerror("Shift by too big value: %d", src2->nVal);
 
-	expr->nVal = (expr->nVal << src2->nVal);
+		expr->nVal = ((uint32_t)src1->nVal << src2->nVal);
+	}
+
 	pushbyte(expr, RPN_SHL);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_SHR(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
+
+	if (!expr->isReloc) {
 		if (src2->nVal < 0)
 			fatalerror("Shift by negative value: %d", src2->nVal);
 		else if (src2->nVal >= 32)
 			fatalerror("Shift by too big value: %d", src2->nVal);
 
-	expr->nVal = (expr->nVal >> src2->nVal);
+		expr->nVal = (src1->nVal >> src2->nVal);
+	}
+
 	pushbyte(expr, RPN_SHR);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_MUL(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
-	expr->nVal = (expr->nVal * src2->nVal);
+	expr->nVal = ((uint32_t)src1->nVal * (uint32_t)src2->nVal);
 	pushbyte(expr, RPN_MUL);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_DIV(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
+
+	if (!expr->isReloc) {
 		if (src2->nVal == 0)
 			fatalerror("Division by zero");
 
-	expr->nVal = (expr->nVal / src2->nVal);
+		if (src1->nVal == INT32_MIN && src2->nVal == -1) {
+			warning("Division of min value by -1");
+			expr->nVal = INT32_MIN;
+		} else {
+			expr->nVal = (src1->nVal / src2->nVal);
+		}
+	}
+
 	pushbyte(expr, RPN_DIV);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_MOD(struct Expression *expr, const struct Expression *src1,
 	     const struct Expression *src2)
 {
 	joinexpr();
+
+	if (!expr->isReloc) {
 		if (src2->nVal == 0)
 			fatalerror("Division by zero");
 
-	expr->nVal = (expr->nVal % src2->nVal);
+		if (src1->nVal == INT32_MIN && src2->nVal == -1)
+			expr->nVal = 0;
+		else
+			expr->nVal = (src1->nVal % src2->nVal);
+	}
+
 	pushbyte(expr, RPN_MOD);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_UNNEG(struct Expression *expr, const struct Expression *src)
 {
 	*expr = *src;
-	expr->nVal = -expr->nVal;
+	expr->nVal = -(uint32_t)expr->nVal;
 	pushbyte(expr, RPN_UNSUB);
+	expr->nRPNPatchSize++;
 }
 
 void rpn_UNNOT(struct Expression *expr, const struct Expression *src)
@@ -398,4 +490,5 @@ void rpn_UNNOT(struct Expression *expr, const struct Expression *src)
 	*expr = *src;
 	expr->nVal = ~expr->nVal;
 	pushbyte(expr, RPN_UNNOT);
+	expr->nRPNPatchSize++;
 }

src/asm/symbol.c

@@ -22,6 +22,7 @@
 #include "asm/main.h"
 #include "asm/mymath.h"
 #include "asm/output.h"
+#include "asm/util.h"
 
 #include "extern/err.h"
 
@@ -68,7 +69,7 @@ int32_t Callback_NARG(unused_ struct sSymbol *sym)
 	uint32_t i = 0;
 
 	while (currentmacroargs[i] && i < MAXMACROARGS)
-		i += 1;
+		i++;
 
 	return i;
 }
@@ -90,16 +91,11 @@ static int32_t getvaluefield(struct sSymbol *sym)
 }
 
 /*
- * Calculate the hash value for a string
+ * Calculate the hash value for a symbol name
  */
-uint32_t calchash(char *s)
+uint32_t sym_CalcHash(const char *s)
 {
-	uint32_t hash = 5381;
+	return calchash(s) % HASHSIZE;
-
-	while (*s != 0)
-		hash = (hash * 33) ^ (*s++);
-
-	return hash % HASHSIZE;
 }
 
 /*
@@ -123,7 +119,7 @@ struct sSymbol *createsymbol(char *s)
 	struct sSymbol **ppsym;
 	uint32_t hash;
 
-	hash = calchash(s);
+	hash = sym_CalcHash(s);
 	ppsym = &(tHashedSymbols[hash]);
 
 	while ((*ppsym) != NULL)
@@ -154,12 +150,15 @@ struct sSymbol *createsymbol(char *s)
  * Creates the full name of a local symbol in a given scope, by prepending
  * the name with the parent symbol's name.
  */
-static size_t fullSymbolName(char *output, size_t outputSize, char *localName,
+static void fullSymbolName(char *output, size_t outputSize, char *localName,
 			   const struct sSymbol *scope)
 {
 	const struct sSymbol *parent = scope->pScope ? scope->pScope : scope;
+	int n = snprintf(output, outputSize, "%s%s", parent->tzName, localName);
 
-	return snprintf(output, outputSize, "%s%s", parent->tzName, localName);
+	if (n >= (int)outputSize)
+		fatalerror("Symbol name is too long: '%s%s'",
+			   parent->tzName, localName);
 }
 
 /*
@@ -184,7 +183,7 @@ struct sSymbol **findpsymbol(char *s, struct sSymbol *scope)
 				   s);
 	}
 
-	hash = calchash(s);
+	hash = sym_CalcHash(s);
 	ppsym = &(tHashedSymbols[hash]);
 
 	while ((*ppsym) != NULL) {
@@ -207,7 +206,7 @@ struct sSymbol *findsymbol(char *s, struct sSymbol *scope)
 }
 
 /*
- * Find a symbol by name and scope
+ * Find a symbol by name, with automatically determined scope
  */
 struct sSymbol *sym_FindSymbol(char *tzName)
 {
@@ -256,14 +255,7 @@ void sym_Purge(char *tzName)
  */
 uint32_t sym_isConstDefined(char *tzName)
 {
-	struct sSymbol *psym, *pscope;
+	struct sSymbol *psym = sym_FindSymbol(tzName);
-
-	if (*tzName == '.')
-		pscope = pScope;
-	else
-		pscope = NULL;
-
-	psym = findsymbol(tzName, pscope);
 
 	if (psym && (psym->nType & SYMF_DEFINED)) {
 		uint32_t mask = SYMF_EQU | SYMF_SET | SYMF_MACRO | SYMF_STRING;
@@ -280,19 +272,9 @@ uint32_t sym_isConstDefined(char *tzName)
 
 uint32_t sym_isDefined(char *tzName)
 {
-	struct sSymbol *psym, *pscope;
+	struct sSymbol *psym = sym_FindSymbol(tzName);
 
-	if (*tzName == '.')
+	return (psym && (psym->nType & SYMF_DEFINED));
-		pscope = pScope;
-	else
-		pscope = NULL;
-
-	psym = findsymbol(tzName, pscope);
-
-	if (psym && (psym->nType & SYMF_DEFINED))
-		return 1;
-	else
-		return 0;
 }
 
 /*
@@ -300,21 +282,9 @@ uint32_t sym_isDefined(char *tzName)
  */
 uint32_t sym_isConstant(char *s)
 {
-	struct sSymbol *psym, *pscope;
+	struct sSymbol *psym = sym_FindSymbol(s);
 
-	if (*s == '.')
+	return (psym && (psym->nType & SYMF_CONST));
-		pscope = pScope;
-	else
-		pscope = NULL;
-
-	psym = findsymbol(s, pscope);
-
-	if (psym != NULL) {
-		if (psym->nType & SYMF_CONST)
-			return 1;
-	}
-
-	return 0;
 }
 
 /*
@@ -337,14 +307,7 @@ char *sym_GetStringValue(char *tzSym)
  */
 uint32_t sym_GetConstantValue(char *s)
 {
-	struct sSymbol *psym, *pscope;
+	struct sSymbol *psym = sym_FindSymbol(s);
-
-	if (*s == '.')
-		pscope = pScope;
-	else
-		pscope = NULL;
-
-	psym = findsymbol(s, pscope);
 
 	if (psym != NULL) {
 		if (psym->nType & SYMF_CONST)
@@ -358,63 +321,12 @@ uint32_t sym_GetConstantValue(char *s)
 	return 0;
 }
 
-/*
- * Return a symbols value... "estimated" if not defined yet
- */
-uint32_t sym_GetValue(char *s)
-{
-	struct sSymbol *psym, *pscope;
-
-	if (*s == '.')
-		pscope = pScope;
-	else
-		pscope = NULL;
-
-	psym = findsymbol(s, pscope);
-
-	if (psym != NULL) {
-		if (psym->nType & SYMF_DEFINED) {
-			if (psym->nType & (SYMF_MACRO | SYMF_STRING))
-				yyerror("'%s' is a macro or string symbol", s);
-
-			return getvaluefield(psym);
-		}
-
-		if (nPass == 2) {
-			/*
-			 * Assume undefined symbols are imported from
-			 * somwehere else
-			 */
-			psym->nType |= SYMF_IMPORT;
-		}
-
-		/* 0x80 seems like a good default value... */
-		return 0x80;
-	}
-
-	if (nPass == 1) {
-		createsymbol(s);
-		return 0x80;
-	}
-
-	yyerror("'%s' not defined", s);
-
-	return 0;
-}
-
 /*
  * Return a defined symbols value... aborts if not defined yet
  */
 uint32_t sym_GetDefinedValue(char *s)
 {
-	struct sSymbol *psym, *pscope;
+	struct sSymbol *psym = sym_FindSymbol(s);
-
-	if (*s == '.')
-		pscope = pScope;
-	else
-		pscope = NULL;
-
-	psym = findsymbol(s, pscope);
 
 	if (psym != NULL) {
 		if ((psym->nType & SYMF_DEFINED)) {
@@ -448,7 +360,7 @@ void sym_ShiftCurrentMacroArgs(void)
 	int32_t i;
 
 	free(currentmacroargs[0]);
-	for (i = 0; i < MAXMACROARGS - 1; i += 1)
+	for (i = 0; i < MAXMACROARGS - 1; i++)
 		currentmacroargs[i] = currentmacroargs[i + 1];
 
 	currentmacroargs[MAXMACROARGS - 1] = NULL;
@@ -471,7 +383,8 @@ void sym_UseNewMacroArgs(void)
 {
 	int32_t i;
 
-	for (i = 0; i <= MAXMACROARGS; i += 1) {
+	for (i = 0; i <= MAXMACROARGS; i++) {
+		free(currentmacroargs[i]);
 		currentmacroargs[i] = newmacroargs[i];
 		newmacroargs[i] = NULL;
 	}
@@ -481,25 +394,19 @@ void sym_SaveCurrentMacroArgs(char *save[])
 {
 	int32_t i;
 
-	for (i = 0; i <= MAXMACROARGS; i += 1)
+	for (i = 0; i <= MAXMACROARGS; i++) {
 		save[i] = currentmacroargs[i];
+		currentmacroargs[i] = NULL;
+	}
 }
 
 void sym_RestoreCurrentMacroArgs(char *save[])
 {
 	int32_t i;
 
-	for (i = 0; i <= MAXMACROARGS; i += 1)
+	for (i = 0; i <= MAXMACROARGS; i++) {
-		currentmacroargs[i] = save[i];
-}
-
-void sym_FreeCurrentMacroArgs(void)
-{
-	int32_t i;
-
-	for (i = 0; i <= MAXMACROARGS; i += 1) {
 		free(currentmacroargs[i]);
-		currentmacroargs[i] = NULL;
+		currentmacroargs[i] = save[i];
 	}
 }
 
@@ -508,7 +415,7 @@ void sym_AddNewMacroArg(char *s)
 	int32_t i = 0;
 
 	while (i < MAXMACROARGS && newmacroargs[i] != NULL)
-		i += 1;
+		i++;
 
 	if (i < MAXMACROARGS) {
 		if (s)
@@ -524,7 +431,7 @@ void sym_SetMacroArgID(uint32_t nMacroCount)
 {
 	char s[256];
 
-	snprintf(s, sizeof(s), "_%u", nMacroCount);
+	snprintf(s, sizeof(s) - 1, "_%u", nMacroCount);
 	newmacroargs[MAXMACROARGS] = strdup(s);
 }
 
@@ -532,7 +439,7 @@ void sym_UseCurrentMacroArgs(void)
 {
 	int32_t i;
 
-	for (i = 1; i <= MAXMACROARGS; i += 1)
+	for (i = 1; i <= MAXMACROARGS; i++)
 		sym_AddNewMacroArg(sym_FindMacroArg(i));
 }
 
@@ -545,23 +452,36 @@ struct sSymbol *sym_FindMacro(char *s)
 }
 
 /*
- * Add an equated symbol
+ * Create a symbol that will be non-relocatable and ensure that it
+ * hasn't already been defined or referenced in a context that would
+ * require that it be relocatable
  */
-void sym_AddEqu(char *tzSym, int32_t value)
+static struct sSymbol *createNonrelocSymbol(char *tzSym)
 {
-	if ((nPass == 1) || ((nPass == 2) && (sym_isDefined(tzSym) == 0))) {
-		/* only add equated symbols in pass 1 */
 	struct sSymbol *nsym = findsymbol(tzSym, NULL);
 
 	if (nsym != NULL) {
 		if (nsym->nType & SYMF_DEFINED) {
-				yyerror("'%s' already defined in %s(%d)", tzSym,
+			yyerror("'%s' already defined at %s(%u)",
-					nsym->tzFileName, nsym->nFileLine);
+				tzSym, nsym->tzFileName, nsym->nFileLine);
+		} else if (nsym->nType & SYMF_REF) {
+			yyerror("'%s' already referenced at %s(%u)",
+				tzSym, nsym->tzFileName, nsym->nFileLine);
 		}
 	} else {
 		nsym = createsymbol(tzSym);
 	}
 
+	return nsym;
+}
+
+/*
+ * Add an equated symbol
+ */
+void sym_AddEqu(char *tzSym, int32_t value)
+{
+	struct sSymbol *nsym = createNonrelocSymbol(tzSym);
+
 	if (nsym) {
 		nsym->nValue = value;
 		nsym->nType |= SYMF_EQU | SYMF_DEFINED | SYMF_CONST;
@@ -569,7 +489,6 @@ void sym_AddEqu(char *tzSym, int32_t value)
 		updateSymbolFilename(nsym);
 	}
 }
-}
 
 /*
  * Add a string equated symbol.
@@ -585,16 +504,7 @@ void sym_AddEqu(char *tzSym, int32_t value)
  */
 void sym_AddString(char *tzSym, char *tzValue)
 {
-	struct sSymbol *nsym = findsymbol(tzSym, NULL);
+	struct sSymbol *nsym = createNonrelocSymbol(tzSym);
-
-	if (nsym != NULL) {
-		if (nsym->nType & SYMF_DEFINED) {
-			yyerror("'%s' already defined in %s(%d)",
-				tzSym, nsym->tzFileName, nsym->nFileLine);
-		}
-	} else {
-		nsym = createsymbol(tzSym);
-	}
 
 	if (nsym) {
 		nsym->pMacro = malloc(strlen(tzValue) + 1);
@@ -617,11 +527,7 @@ uint32_t sym_isString(char *tzSym)
 {
 	const struct sSymbol *pSym = findsymbol(tzSym, NULL);
 
-	if (pSym != NULL) {
+	return (pSym && (pSym->nType & SYMF_STRING));
-		if (pSym->nType & SYMF_STRING)
-			return 1;
-	}
-	return 0;
 }
 
 /*
@@ -631,8 +537,25 @@ void sym_AddSet(char *tzSym, int32_t value)
 {
 	struct sSymbol *nsym = findsymbol(tzSym, NULL);
 
-	if (nsym == NULL) {
+	if (nsym != NULL) {
-		/* Symbol hasn been found, create */
+		if (nsym->nType & SYMF_DEFINED) {
+			if (!(nsym->nType & SYMF_CONST))
+				yyerror("'%s' already defined as non-constant at %s(%u)",
+					tzSym,
+					nsym->tzFileName,
+					nsym->nFileLine);
+			else if (!(nsym->nType & SYMF_SET))
+				yyerror("'%s' already defined as constant at %s(%u)",
+					tzSym,
+					nsym->tzFileName,
+					nsym->nFileLine);
+		} else if (nsym->nType & SYMF_REF) {
+			yyerror("'%s' already referenced at %s(%u)",
+				tzSym,
+				nsym->tzFileName,
+				nsym->nFileLine);
+		}
+	} else {
 		nsym = createsymbol(tzSym);
 	}
 
@@ -650,9 +573,6 @@ void sym_AddSet(char *tzSym, int32_t value)
 void sym_AddLocalReloc(char *tzSym)
 {
 	if (pScope) {
-		if (strlen(tzSym) + strlen(pScope->tzName) > MAXSYMLEN)
-			fatalerror("Symbol too long");
-
 		char fullname[MAXSYMLEN + 1];
 
 		fullSymbolName(fullname, sizeof(fullname), tzSym, pScope);
@@ -669,10 +589,6 @@ void sym_AddLocalReloc(char *tzSym)
 void sym_AddReloc(char *tzSym)
 {
 	struct sSymbol *scope = NULL;
-
-	if ((nPass == 1)
-	    || ((nPass == 2) && (sym_isDefined(tzSym) == 0))) {
-		/* only add reloc symbols in pass 1 */
 	struct sSymbol *nsym;
 	char *localPtr = strchr(tzSym, '.');
 
@@ -721,7 +637,7 @@ void sym_AddReloc(char *tzSym)
 
 		updateSymbolFilename(nsym);
 	}
-	}
+
 	pScope = findsymbol(tzSym, scope);
 }
 
@@ -734,10 +650,6 @@ void sym_AddReloc(char *tzSym)
  */
 int32_t sym_IsRelocDiffDefined(char *tzSym1, char *tzSym2)
 {
-	/* Do nothing the first pass. */
-	if (nPass != 2)
-		return 1;
-
 	const struct sSymbol *nsym1 = sym_FindSymbol(tzSym1);
 	const struct sSymbol *nsym2 = sym_FindSymbol(tzSym2);
 
@@ -781,8 +693,6 @@ int32_t sym_IsRelocDiffDefined(char *tzSym1, char *tzSym2)
  */
 void sym_Export(char *tzSym)
 {
-	if (nPass == 1) {
-		/* only export symbols in pass 1 */
 	struct sSymbol *nsym = sym_FindSymbol(tzSym);
 
 	if (nsym == NULL)
@@ -790,139 +700,69 @@ void sym_Export(char *tzSym)
 
 	if (nsym)
 		nsym->nType |= SYMF_EXPORT;
-	} else {
-		const struct sSymbol *nsym = sym_FindSymbol(tzSym);
-
-		if (nsym != NULL) {
-			if (nsym->nType & SYMF_DEFINED)
-				return;
-		}
-		yyerror("'%s' not defined", tzSym);
-	}
-}
-
-/*
- * Globalize a symbol (export if defined, import if not)
- */
-void sym_Global(char *tzSym)
-{
-	if (nPass == 2) {
-		/* only globalize symbols in pass 2 */
-		struct sSymbol *nsym = sym_FindSymbol(tzSym);
-
-		if ((nsym == NULL) || ((nsym->nType & SYMF_DEFINED) == 0)) {
-			if (nsym == NULL)
-				nsym = createsymbol(tzSym);
-
-			if (nsym)
-				nsym->nType |= SYMF_IMPORT;
-		} else {
-			if (nsym)
-				nsym->nType |= SYMF_EXPORT;
-		}
-	}
 }
 
 /*
  * Add a macro definition
  */
-void sym_AddMacro(char *tzSym)
+void sym_AddMacro(char *tzSym, int32_t nDefLineNo)
 {
-	if ((nPass == 1) || ((nPass == 2) && (sym_isDefined(tzSym) == 0))) {
+	struct sSymbol *nsym = createNonrelocSymbol(tzSym);
-		/* only add macros in pass 1 */
-		struct sSymbol *nsym;
-
-		nsym = findsymbol(tzSym, NULL);
-
-		if (nsym != NULL) {
-			if (nsym->nType & SYMF_DEFINED) {
-				yyerror("'%s' already defined in %s(%d)",
-					tzSym, nsym->tzFileName,
-					nsym->nFileLine);
-			}
-		} else {
-			nsym = createsymbol(tzSym);
-		}
 
 	if (nsym) {
-			nsym->nValue = nPC;
 		nsym->nType |= SYMF_MACRO | SYMF_DEFINED;
 		nsym->pScope = NULL;
 		nsym->ulMacroSize = ulNewMacroSize;
 		nsym->pMacro = tzNewMacro;
 		updateSymbolFilename(nsym);
-		}
+		/*
+		 * The symbol is created at the line after the `endm`,
+		 * override this with the actual definition line
+		 */
+		nsym->nFileLine = nDefLineNo;
 	}
 }
 
 /*
- * Set whether to export all relocable symbols by default
+ * Flag that a symbol is referenced in an RPN expression
+ * and create it if it doesn't exist yet
+ */
+void sym_Ref(char *tzSym)
+{
+	struct sSymbol *nsym = sym_FindSymbol(tzSym);
+
+	if (nsym == NULL) {
+		char fullname[MAXSYMLEN + 1];
+		int isLocal = 0;
+
+		if (*tzSym == '.') {
+			if (!pScope)
+				fatalerror("Local label reference '%s' in main scope",
+					   tzSym);
+			fullSymbolName(fullname, sizeof(fullname), tzSym,
+				       pScope);
+			tzSym = fullname;
+			isLocal = 1;
+		}
+
+		nsym = createsymbol(tzSym);
+
+		if (nsym && isLocal)
+			nsym->nType |= SYMF_LOCAL;
+	}
+
+	if (nsym)
+		nsym->nType |= SYMF_REF;
+}
+
+/*
+ * Set whether to export all relocatable symbols by default
  */
 void sym_SetExportAll(uint8_t set)
 {
 	exportall = set;
 }
 
-/*
- * Prepare for pass #1
- */
-void sym_PrepPass1(void)
-{
-	sym_Init();
-}
-
-/*
- * Prepare for pass #2
- */
-void sym_PrepPass2(void)
-{
-	int32_t i;
-
-	for (i = 0; i < HASHSIZE; i += 1) {
-		struct sSymbol **ppSym = &(tHashedSymbols[i]);
-
-		while (*ppSym) {
-			uint32_t mask = SYMF_SET | SYMF_STRING | SYMF_EQU;
-
-			if ((*ppSym)->nType & mask) {
-				struct sSymbol *pTemp;
-
-				pTemp = (*ppSym)->pNext;
-				free(*ppSym);
-				*ppSym = pTemp;
-			} else {
-				ppSym = &((*ppSym)->pNext);
-			}
-		}
-	}
-	pScope = NULL;
-	pPCSymbol->nValue = 0;
-
-	sym_AddString("__TIME__", SavedTIME);
-	sym_AddString("__DATE__", SavedDATE);
-	sym_AddString("__ISO_8601_LOCAL__", SavedTIMESTAMP_ISO8601_LOCAL);
-	sym_AddString("__ISO_8601_UTC__", SavedTIMESTAMP_ISO8601_UTC);
-	sym_AddString("__UTC_DAY__", SavedDAY);
-	sym_AddString("__UTC_MONTH__", SavedMONTH);
-	sym_AddString("__UTC_YEAR__", SavedYEAR);
-	sym_AddString("__UTC_HOUR__", SavedHOUR);
-	sym_AddString("__UTC_MINUTE__", SavedMINUTE);
-	sym_AddString("__UTC_SECOND__", SavedSECOND);
-	sym_AddEqu("__RGBDS_MAJOR__", PACKAGE_VERSION_MAJOR);
-	sym_AddEqu("__RGBDS_MINOR__", PACKAGE_VERSION_MINOR);
-	sym_AddEqu("__RGBDS_PATCH__", PACKAGE_VERSION_PATCH);
-	sym_AddSet("_RS", 0);
-
-	sym_AddEqu("_NARG", 0);
-	p_NARGSymbol = findsymbol("_NARG", NULL);
-	p_NARGSymbol->Callback = Callback_NARG;
-	sym_AddEqu("__LINE__", 0);
-	p__LINE__Symbol = findsymbol("__LINE__", NULL);
-	p__LINE__Symbol->Callback = Callback__LINE__;
-
-	math_DefinePI();
-}
-
 /*
  * Initialize the symboltable
  */
@@ -931,12 +771,12 @@ void sym_Init(void)
 	int32_t i;
 	time_t now;
 
-	for (i = 0; i < MAXMACROARGS; i += 1) {
+	for (i = 0; i < MAXMACROARGS; i++) {
 		currentmacroargs[i] = NULL;
 		newmacroargs[i] = NULL;
 	}
 
-	for (i = 0; i < HASHSIZE; i += 1)
+	for (i = 0; i < HASHSIZE; i++)
 		tHashedSymbols[i] = NULL;
 
 	sym_AddReloc("@");
@@ -948,6 +788,10 @@ void sym_Init(void)
 	p__LINE__Symbol = findsymbol("__LINE__", NULL);
 	p__LINE__Symbol->Callback = Callback__LINE__;
 
+	sym_AddEqu("__RGBDS_MAJOR__", PACKAGE_VERSION_MAJOR);
+	sym_AddEqu("__RGBDS_MINOR__", PACKAGE_VERSION_MINOR);
+	sym_AddEqu("__RGBDS_PATCH__", PACKAGE_VERSION_PATCH);
+
 	sym_AddSet("_RS", 0);
 
 	if (time(&now) != -1) {

src/asm/util.c

@@ -0,0 +1,46 @@
+/*
+ * This file is part of RGBDS.
+ *
+ * Copyright (c) 1997-2019, Carsten Sorensen and RGBDS contributors.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <stdint.h>
+
+#include "asm/main.h"
+#include "asm/util.h"
+
+#include "extern/utf8decoder.h"
+
+/*
+ * Calculate the hash value for a string
+ */
+uint32_t calchash(const char *s)
+{
+	uint32_t hash = 5381;
+
+	while (*s != 0)
+		hash = (hash * 33) ^ (*s++);
+
+	return hash;
+}
+
+int32_t readUTF8Char(char *dest, char *src)
+{
+	uint32_t state;
+	uint32_t codep;
+	int32_t i;
+
+	for (i = 0, state = 0;; i++) {
+		if (decode(&state, &codep, (uint8_t)src[i]) == 1)
+			fatalerror("invalid UTF-8 character");
+
+		dest[i] = src[i];
+
+		if (state == 0) {
+			dest[++i] = '\0';
+			return i;
+		}
+	}
+}

src/fix/main.c

@@ -268,10 +268,7 @@ int main(int argc, char *argv[])
 		 * characters may conflict with the title.
 		 */
 
-		int n = snprintf((char *)header + 0x34, 16, "%s", title);
+		strncpy((char *)header + 0x34, title, 16);
-
-		for (int i = 16; i > n; i--)
-			header[0x34 + i] = '\0';
 	}
 
 	if (setid) {

src/gfx/gb.c

@@ -85,8 +85,87 @@ int get_tile_index(uint8_t *tile, uint8_t **tiles, int num_tiles, int tile_size)
 	return -1;
 }
 
-void create_tilemap(const struct Options *opts, struct GBImage *gb,
+uint8_t reverse_bits(uint8_t b)
-		    struct Tilemap *tilemap)
+{
+	uint8_t rev = 0;
+
+	rev |= (b & 0x80) >> 7;
+	rev |= (b & 0x40) >> 5;
+	rev |= (b & 0x20) >> 3;
+	rev |= (b & 0x10) >> 1;
+	rev |= (b & 0x08) << 1;
+	rev |= (b & 0x04) << 3;
+	rev |= (b & 0x02) << 5;
+	rev |= (b & 0x01) << 7;
+	return rev;
+}
+
+void xflip(uint8_t *tile, uint8_t *tile_xflip, int tile_size)
+{
+	int i;
+
+	for (i = 0; i < tile_size; i++)
+		tile_xflip[i] = reverse_bits(tile[i]);
+}
+
+void yflip(uint8_t *tile, uint8_t *tile_yflip, int tile_size)
+{
+	int i;
+
+	for (i = 0; i < tile_size; i++)
+		tile_yflip[i] = tile[(tile_size - i - 1) ^ (depth - 1)];
+}
+
+/*
+ * get_mirrored_tile_index looks for `tile` in tile array `tiles`, also
+ * checking x-, y-, and xy-mirrored versions of `tile`. If one is found,
+ * `*flags` is set according to the type of mirroring and the index of the
+ * matched tile is returned. If no match is found, -1 is returned.
+ */
+int get_mirrored_tile_index(uint8_t *tile, uint8_t **tiles, int num_tiles,
+			    int tile_size, int *flags)
+{
+	int index;
+	uint8_t *tile_xflip;
+	uint8_t *tile_yflip;
+
+	index = get_tile_index(tile, tiles, num_tiles, tile_size);
+	if (index >= 0) {
+		*flags = 0;
+		return index;
+	}
+
+	tile_yflip = malloc(tile_size);
+	yflip(tile, tile_yflip, tile_size);
+	index = get_tile_index(tile_yflip, tiles, num_tiles, tile_size);
+	if (index >= 0) {
+		*flags = YFLIP;
+		free(tile_yflip);
+		return index;
+	}
+
+	tile_xflip = malloc(tile_size);
+	xflip(tile, tile_xflip, tile_size);
+	index = get_tile_index(tile_xflip, tiles, num_tiles, tile_size);
+	if (index >= 0) {
+		*flags = XFLIP;
+		free(tile_yflip);
+		free(tile_xflip);
+		return index;
+	}
+
+	yflip(tile_xflip, tile_yflip, tile_size);
+	index = get_tile_index(tile_yflip, tiles, num_tiles, tile_size);
+	if (index >= 0)
+		*flags = XFLIP | YFLIP;
+
+	free(tile_yflip);
+	free(tile_xflip);
+	return index;
+}
+
+void create_mapfiles(const struct Options *opts, struct GBImage *gb,
+		     struct Mapfile *tilemap, struct Mapfile *attrmap)
 {
 	int i, j;
 	int gb_i;
@@ -94,6 +173,7 @@ void create_tilemap(const struct Options *opts, struct GBImage *gb,
 	int max_tiles;
 	int num_tiles;
 	int index;
+	int flags;
 	int gb_size;
 	uint8_t *tile;
 	uint8_t **tiles;
@@ -109,19 +189,33 @@ void create_tilemap(const struct Options *opts, struct GBImage *gb,
 	tiles = calloc(max_tiles, sizeof(uint8_t *));
 	num_tiles = 0;
 
+	if (*opts->tilemapfile) {
 		tilemap->data = calloc(max_tiles, sizeof(uint8_t));
 		tilemap->size = 0;
+	}
+
+	if (*opts->attrmapfile) {
+		attrmap->data = calloc(max_tiles, sizeof(uint8_t));
+		attrmap->size = 0;
+	}
+
 
 	gb_i = 0;
 	while (gb_i < gb_size) {
+		flags = 0;
 		tile = malloc(tile_size);
 		for (i = 0; i < tile_size; i++) {
 			tile[i] = gb->data[gb_i];
 			gb_i++;
 		}
 		if (opts->unique) {
+			if (opts->mirror) {
+				index = get_mirrored_tile_index(tile, tiles, num_tiles,
+								tile_size, &flags);
+			} else {
 				index = get_tile_index(tile, tiles, num_tiles,
 						       tile_size);
+			}
 			if (index < 0) {
 				index = num_tiles;
 				tiles[num_tiles] = tile;
@@ -132,9 +226,15 @@ void create_tilemap(const struct Options *opts, struct GBImage *gb,
 			tiles[num_tiles] = tile;
 			num_tiles++;
 		}
+		if (*opts->tilemapfile) {
 			tilemap->data[tilemap->size] = index;
 			tilemap->size++;
 		}
+		if (*opts->attrmapfile) {
+			attrmap->data[attrmap->size] = flags;
+			attrmap->size++;
+		}
+	}
 
 	if (opts->unique) {
 		free(gb->data);
@@ -154,21 +254,61 @@ void create_tilemap(const struct Options *opts, struct GBImage *gb,
 }
 
 void output_tilemap_file(const struct Options *opts,
-			 const struct Tilemap *tilemap)
+			 const struct Mapfile *tilemap)
 {
 	FILE *f;
 
-	f = fopen(opts->mapfile, "wb");
+	f = fopen(opts->tilemapfile, "wb");
 	if (!f)
-		err(1, "Opening tilemap file '%s' failed", opts->mapfile);
+		err(1, "Opening tilemap file '%s' failed", opts->tilemapfile);
 
 	fwrite(tilemap->data, 1, tilemap->size, f);
 	fclose(f);
 
-	if (opts->mapout)
+	if (opts->tilemapout)
-		free(opts->mapfile);
+		free(opts->tilemapfile);
 }
 
+void output_attrmap_file(const struct Options *opts,
+			 const struct Mapfile *attrmap)
+{
+	FILE *f;
+
+	f = fopen(opts->attrmapfile, "wb");
+	if (!f)
+		err(1, "Opening attrmap file '%s' failed", opts->attrmapfile);
+
+	fwrite(attrmap->data, 1, attrmap->size, f);
+	fclose(f);
+
+	if (opts->attrmapout)
+		free(opts->attrmapfile);
+}
+
+/*
+ * based on the Gaussian-like curve used by SameBoy since commit
+ * 65dd02cc52f531dbbd3a7e6014e99d5b24e71a4c (Oct 2017)
+ * with ties resolved by comparing the difference of the squares.
+ */
+static int reverse_curve[] = {
+	0,  0,  1,  1,  2,  2,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,
+	5,  5,  5,  5,  5,  5,  6,  6,  6,  6,  6,  6,  6,  6,  7,  7,
+	7,  7,  7,  7,  7,  7,  7,  8,  8,  8,  8,  8,  8,  8,  8,  8,
+	9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  10, 10, 10, 10, 10, 10,
+	10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+	12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
+	13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14,
+	14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+	16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17,
+	17, 17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18,
+	18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19,
+	19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21,
+	21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, 22,
+	22, 23, 23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24,
+	24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26,
+	26, 27, 27, 27, 27, 27, 28, 28, 28, 28, 29, 29, 29, 30, 30, 31,
+};
+
 void output_palette_file(const struct Options *opts,
 			 const struct RawIndexedImage *raw_image)
 {
@@ -181,10 +321,25 @@ void output_palette_file(const struct Options *opts,
 		err(1, "Opening palette file '%s' failed", opts->palfile);
 
 	for (i = 0; i < raw_image->num_colors; i++) {
-		color =
+		int r = raw_image->palette[i].red;
-			raw_image->palette[i].blue  >> 3 << 10 |
+		int g = raw_image->palette[i].green;
-			raw_image->palette[i].green >> 3 <<  5 |
+		int b = raw_image->palette[i].blue;
-			raw_image->palette[i].red   >> 3;
+
+		if (opts->colorcurve) {
+			g = (g * 4 - b) / 3;
+			if (g < 0)
+				g = 0;
+
+			r = reverse_curve[r];
+			g = reverse_curve[g];
+			b = reverse_curve[b];
+		} else {
+			r >>= 3;
+			g >>= 3;
+			b >>= 3;
+		}
+
+		color = b << 10 | g << 5 | r;
 		cur_bytes[0] = color & 0xFF;
 		cur_bytes[1] = color >> 8;
 		fwrite(cur_bytes, 2, 1, f);

src/gfx/main.c

@@ -18,8 +18,8 @@
 static void print_usage(void)
 {
 	printf(
-"usage: rgbgfx [-DFfhPTuVv] [-d #] [-o outfile] [-p palfile] [-t mapfile]\n"
+"usage: rgbgfx [-ADFfhmPTuVv] [-o outfile] [-a attrmap] [-d #] [-p palfile]\n"
-"              [-x #] infile\n");
+"              [-t tilemap] [-x #] infile\n");
 	exit(1);
 }
 
@@ -30,21 +30,32 @@ int main(int argc, char *argv[])
 	struct ImageOptions png_options = {0};
 	struct RawIndexedImage *raw_image;
 	struct GBImage gb = {0};
-	struct Tilemap tilemap = {0};
+	struct Mapfile tilemap = {0};
+	struct Mapfile attrmap = {0};
 	char *ext;
 	const char *errmsg = "Warning: The PNG's %s setting is not the same as the setting defined on the command line.";
 
 	if (argc == 1)
 		print_usage();
 
-	opts.mapfile = "";
+	opts.tilemapfile = "";
+	opts.attrmapfile = "";
 	opts.palfile = "";
 	opts.outfile = "";
 
 	depth = 2;
 
-	while ((ch = getopt(argc, argv, "Dd:Ffho:Tt:uPp:Vvx:")) != -1) {
+	while ((ch = getopt(argc, argv, "Aa:CDd:Ffhmo:Tt:uPp:Vvx:")) != -1) {
 		switch (ch) {
+		case 'A':
+			opts.attrmapout = true;
+			break;
+		case 'a':
+			opts.attrmapfile = optarg;
+			break;
+		case 'C':
+			opts.colorcurve = true;
+			break;
 		case 'D':
 			opts.debug = true;
 			break;
@@ -60,6 +71,10 @@ int main(int argc, char *argv[])
 		case 'h':
 			opts.horizontal = true;
 			break;
+		case 'm':
+			opts.mirror = true;
+			opts.unique = true;
+			break;
 		case 'o':
 			opts.outfile = optarg;
 			break;
@@ -70,10 +85,10 @@ int main(int argc, char *argv[])
 			opts.palfile = optarg;
 			break;
 		case 'T':
-			opts.mapout = true;
+			opts.tilemapout = true;
 			break;
 		case 't':
-			opts.mapfile = optarg;
+			opts.tilemapfile = optarg;
 			break;
 		case 'u':
 			opts.unique = true;
@@ -107,7 +122,8 @@ int main(int argc, char *argv[])
 
 	raw_image = input_png_file(&opts, &png_options);
 
-	png_options.mapfile = "";
+	png_options.tilemapfile = "";
+	png_options.attrmapfile = "";
 	png_options.palfile = "";
 
 	if (png_options.horizontal != opts.horizontal) {
@@ -148,25 +164,45 @@ int main(int argc, char *argv[])
 		     (raw_image->width / 8) * (raw_image->height / 8) - 1);
 	}
 
-	if (strcmp(png_options.mapfile, opts.mapfile) != 0) {
+	if (strcmp(png_options.tilemapfile, opts.tilemapfile) != 0) {
 		if (opts.verbose)
 			warnx(errmsg, "tilemap file");
 
 		if (opts.hardfix)
-			png_options.mapfile = opts.mapfile;
+			png_options.tilemapfile = opts.tilemapfile;
 	}
-	if (!*opts.mapfile)
+	if (!*opts.tilemapfile)
-		opts.mapfile = png_options.mapfile;
+		opts.tilemapfile = png_options.tilemapfile;
 
-	if (png_options.mapout != opts.mapout) {
+	if (png_options.tilemapout != opts.tilemapout) {
 		if (opts.verbose)
 			warnx(errmsg, "tilemap file");
 
 		if (opts.hardfix)
-			png_options.mapout = opts.mapout;
+			png_options.tilemapout = opts.tilemapout;
 	}
-	if (png_options.mapout)
+	if (png_options.tilemapout)
-		opts.mapout = png_options.mapout;
+		opts.tilemapout = png_options.tilemapout;
+
+	if (strcmp(png_options.attrmapfile, opts.attrmapfile) != 0) {
+		if (opts.verbose)
+			warnx(errmsg, "attrmap file");
+
+		if (opts.hardfix)
+			png_options.attrmapfile = opts.attrmapfile;
+	}
+	if (!*opts.attrmapfile)
+		opts.attrmapfile = png_options.attrmapfile;
+
+	if (png_options.attrmapout != opts.attrmapout) {
+		if (opts.verbose)
+			warnx(errmsg, "attrmap file");
+
+		if (opts.hardfix)
+			png_options.attrmapout = opts.attrmapout;
+	}
+	if (png_options.attrmapout)
+		opts.attrmapout = png_options.attrmapout;
 
 	if (strcmp(png_options.palfile, opts.palfile) != 0) {
 		if (opts.verbose)
@@ -189,19 +225,35 @@ int main(int argc, char *argv[])
 	if (png_options.palout)
 		opts.palout = png_options.palout;
 
-	if (!*opts.mapfile && opts.mapout) {
+	if (!*opts.tilemapfile && opts.tilemapout) {
 		ext = strrchr(opts.infile, '.');
 
 		if (ext != NULL) {
 			size = ext - opts.infile + 9;
-			opts.mapfile = malloc(size);
+			opts.tilemapfile = malloc(size);
-			strncpy(opts.mapfile, opts.infile, size);
+			strncpy(opts.tilemapfile, opts.infile, size);
-			*strrchr(opts.mapfile, '.') = '\0';
+			*strrchr(opts.tilemapfile, '.') = '\0';
-			strcat(opts.mapfile, ".tilemap");
+			strcat(opts.tilemapfile, ".tilemap");
 		} else {
-			opts.mapfile = malloc(strlen(opts.infile) + 9);
+			opts.tilemapfile = malloc(strlen(opts.infile) + 9);
-			strcpy(opts.mapfile, opts.infile);
+			strcpy(opts.tilemapfile, opts.infile);
-			strcat(opts.mapfile, ".tilemap");
+			strcat(opts.tilemapfile, ".tilemap");
+		}
+	}
+
+	if (!*opts.attrmapfile && opts.attrmapout) {
+		ext = strrchr(opts.infile, '.');
+
+		if (ext != NULL) {
+			size = ext - opts.infile + 9;
+			opts.attrmapfile = malloc(size);
+			strncpy(opts.attrmapfile, opts.infile, size);
+			*strrchr(opts.attrmapfile, '.') = '\0';
+			strcat(opts.attrmapfile, ".attrmap");
+		} else {
+			opts.attrmapfile = malloc(strlen(opts.infile) + 9);
+			strcpy(opts.attrmapfile, opts.infile);
+			strcat(opts.attrmapfile, ".attrmap");
 		}
 	}
 
@@ -226,17 +278,20 @@ int main(int argc, char *argv[])
 	gb.trim = opts.trim;
 	gb.horizontal = opts.horizontal;
 
-	if (*opts.outfile || *opts.mapfile) {
+	if (*opts.outfile || *opts.tilemapfile || *opts.attrmapfile) {
 		raw_to_gb(raw_image, &gb);
-		create_tilemap(&opts, &gb, &tilemap);
+		create_mapfiles(&opts, &gb, &tilemap, &attrmap);
 	}
 
 	if (*opts.outfile)
 		output_file(&opts, &gb);
 
-	if (*opts.mapfile)
+	if (*opts.tilemapfile)
 		output_tilemap_file(&opts, &tilemap);
 
+	if (*opts.attrmapfile)
+		output_attrmap_file(&opts, &attrmap);
+
 	if (*opts.palfile)
 		output_palette_file(&opts, raw_image);
 

src/gfx/makepng.c

@@ -199,8 +199,8 @@ static struct RawIndexedImage *indexed_png_to_raw(struct PNGImage *img)
 	raw_image = create_raw_image(img->width, img->height, colors);
 
 	/*
-	 * Transparent palette entries are removed, and the palette is collapsed.
+	 * Transparent palette entries are removed, and the palette is
-	 * Transparent pixels are then replaced with palette index 0.
+	 * collapsed. Transparent pixels are then replaced with palette index 0.
 	 * This way, an indexed PNG can contain transparent pixels in *addition*
 	 * to 4 normal colors.
 	 */
@@ -649,10 +649,16 @@ static void get_text(const struct PNGImage *img,
 			png_options->trim = strtoul(text[i].text, NULL, 0);
 			png_free_data(img->png, img->info, PNG_FREE_TEXT, i);
 		} else if (strcmp(text[i].key, "t") == 0) {
-			png_options->mapfile = text[i].text;
+			png_options->tilemapfile = text[i].text;
 			png_free_data(img->png, img->info, PNG_FREE_TEXT, i);
 		} else if (strcmp(text[i].key, "T") == 0 && !*text[i].text) {
-			png_options->mapout = true;
+			png_options->tilemapout = true;
+			png_free_data(img->png, img->info, PNG_FREE_TEXT, i);
+		} else if (strcmp(text[i].key, "a") == 0) {
+			png_options->attrmapfile = text[i].text;
+			png_free_data(img->png, img->info, PNG_FREE_TEXT, i);
+		} else if (strcmp(text[i].key, "A") == 0 && !*text[i].text) {
+			png_options->attrmapout = true;
 			png_free_data(img->png, img->info, PNG_FREE_TEXT, i);
 		} else if (strcmp(text[i].key, "p") == 0) {
 			png_options->palfile = text[i].text;
@@ -699,18 +705,30 @@ static void set_text(const struct PNGImage *img,
 		text[0].compression = PNG_TEXT_COMPRESSION_NONE;
 		png_set_text(img->png, img->info, text, 1);
 	}
-	if (*png_options->mapfile) {
+	if (*png_options->tilemapfile) {
 		text[0].key = "t";
 		text[0].text = "";
 		text[0].compression = PNG_TEXT_COMPRESSION_NONE;
 		png_set_text(img->png, img->info, text, 1);
 	}
-	if (png_options->mapout) {
+	if (png_options->tilemapout) {
 		text[0].key = "T";
 		text[0].text = "";
 		text[0].compression = PNG_TEXT_COMPRESSION_NONE;
 		png_set_text(img->png, img->info, text, 1);
 	}
+	if (*png_options->attrmapfile) {
+		text[0].key = "a";
+		text[0].text = "";
+		text[0].compression = PNG_TEXT_COMPRESSION_NONE;
+		png_set_text(img->png, img->info, text, 1);
+	}
+	if (png_options->attrmapout) {
+		text[0].key = "A";
+		text[0].text = "";
+		text[0].compression = PNG_TEXT_COMPRESSION_NONE;
+		png_set_text(img->png, img->info, text, 1);
+	}
 	if (*png_options->palfile) {
 		text[0].key = "p";
 		text[0].text = "";

src/gfx/rgbgfx.1

@@ -13,11 +13,12 @@
 .Nd Game Boy graphics converter
 .Sh SYNOPSIS
 .Nm rgbgfx
-.Op Fl DfFhPTVv
+.Op Fl ADfFhmPTuVv
 .Op Fl o Ar outfile
+.Op Fl a Ar attrmap
 .Op Fl d Ar depth
 .Op Fl p Ar palfile
-.Op Fl t Ar mapfile
+.Op Fl t Ar tilemap
 .Op Fl x Ar tiles
 .Ar file
 .Sh DESCRIPTION
@@ -47,6 +48,21 @@ The input image may not contain more colors than the selected bit depth
 allows. Transparent pixels are set to palette index 0.
 .Sh ARGUMENTS
 .Bl -tag -width Ds
+.It Fl a Ar attrmap
+Generate a file of tile mirroring attributes for OAM or (CGB-only) background
+tiles. For each tile in the input file, a byte is written representing the
+dimensions that the associated tile in the output file should be mirrored.
+Useful in combination with
+.Fl m
+to keep track the mirror direction of mirrored duplicate tiles.
+.It Fl A
+Same as
+.Fl a ,
+but the attrmap file output name is made by taking the input filename, removing
+the file extension, and appending
+.Pa .attrmap .
+.It Fl C
+Use the color curve of the Game Boy Color when generating palettes.
 .It Fl D
 Debug features are enabled.
 .It Fl f
@@ -61,6 +77,12 @@ The bit depth of the output image (either 1 or 2).
 By default, the bit depth is 2 (two bits per pixel).
 .It Fl h
 Lay out tiles horizontally rather than vertically.
+.It Fl m
+Truncate tiles by checking for tiles that are mirrored versions of others and
+omitting these from the output file. Useful with tilemaps and attrmaps together
+to keep track of the duplicated tiles and the dimension mirrored. Tiles are
+checked for horizontal, vertical, and horizontal-vertical mirroring. Implies
+.Fl u .
 .It Fl o Ar outfile
 The name of the output file.
 .It Fl p Ar palfile
@@ -74,17 +96,24 @@ Same as
 but the palette file output name is made by taking the input PNG file's
 filename, removing the file extension, and appending
 .Pa .pal .
-.It Fl t Ar mapfile
+.It Fl t Ar tilemap
-If any tiles are the same, don't place the repeat tiles in the output file, and
+Generate a file of tile indices. For each tile in the input file, a byte is
-make a tilemap file.
+written representing the index of the associated tile in the output file.
+Useful in combination with
+.Fl u
+or
+.Fl m
+to keep track of duplicate tiles.
 .It Fl T
 Same as
 .Fl t ,
-but the tilemap file output name is made by taking the input filename,
+but the tilemap file output name is made by taking the input filename, removing
-removing the file extension, and appending
+the file extension, and appending
 .Pa .tilemap .
 .It Fl u
-Truncate repeated tiles. Useful with tilemaps.
+Truncate tiles by checking for tiles that are exact duplicates of others and
+omitting these from the output file. Useful with tilemaps to keep track of the
+duplicated tiles.
 .It Fl V
 Print the version of the program and exit.
 .It Fl v
@@ -105,6 +134,14 @@ The following creates a planar 2bpp file with only unique tiles, and its tilemap
 .Pp
 .D1 $ rgbgfx -T -u -o out.2bpp in.png
 .Pp
+The following creates a planar 2bpp file with only unique tiles (accounting for
+tile mirroring) and its associated tilemap
+.Pa out.tilemap
+and attrmap
+.Pa out.attrmap :
+.Pp
+.D1 $ rgbgfx -A -T -m -o out.2bpp in.png
+.Pp
 The following will do nothing:
 .Pp
 .D1 $ rgbgfx in.png

src/link/.gitignore

@@ -1,2 +1,4 @@
 parser.c
 parser.h
+lexer.c
+lexer.h

src/link/assign.c

@@ -155,6 +155,11 @@ int32_t area_Avail(int32_t bank)
 
 int32_t area_doAlloc(struct sFreeArea *pArea, int32_t org, int32_t size)
 {
+	if (size == 0) {
+		/* 0-byte SECTIONs don't take any room, they can go anywhere */
+		return org;
+	}
+
 	if ((org >= pArea->nOrg)
 	    && ((org + size) <= (pArea->nOrg + pArea->nSize))) {
 
@@ -695,24 +700,24 @@ void CreateSymbolTable(void)
 			if ((tSymbol->Type == SYM_EXPORT) &&
 			    ((tSymbol->pSection == pSect) ||
 				(tSymbol->pSection == NULL))) {
-				if (tSymbol->pSection == NULL)
+				if (tSymbol->pSection == NULL) {
-					sym_CreateSymbol(
+					sym_CreateSymbol(tSymbol->pzName,
-						tSymbol->pzName,
 							 tSymbol->nOffset,
 							 -1,
 							 tSymbol->pzObjFileName,
 							 tSymbol->pzFileName,
 							 tSymbol->nFileLine);
-				else
+				} else {
-					sym_CreateSymbol(
+					sym_CreateSymbol(tSymbol->pzName,
-						tSymbol->pzName,
+							 pSect->nOrg +
-						pSect->nOrg + tSymbol->nOffset,
+							   tSymbol->nOffset,
 							 pSect->nBank,
 							 tSymbol->pzObjFileName,
 							 tSymbol->pzFileName,
 							 tSymbol->nFileLine);
 				}
 			}
+		}
 		pSect = pSect->pNext;
 	}
 }

src/link/patch.c

@@ -18,13 +18,18 @@
 #include "link/mylink.h"
 #include "link/symbol.h"
 
+#define RPN_STACK_SIZE 256
+
 static struct sSection *pCurrentSection;
-static int32_t rpnstack[256];
+static int32_t rpnstack[RPN_STACK_SIZE];
 static int32_t rpnp;
 int32_t nPC;
 
 static void rpnpush(int32_t i)
 {
+	if (rpnp >= RPN_STACK_SIZE)
+		errx(1, "RPN stack overflow");
+
 	rpnstack[rpnp] = i;
 	rpnp++;
 }
@@ -35,13 +40,13 @@ static int32_t rpnpop(void)
 	return rpnstack[rpnp];
 }
 
-static int32_t getsymvalue(int32_t symid)
+static int32_t getsymvalue(struct sPatch *pPatch, int32_t symid)
 {
 	const struct sSymbol *tSymbol = pCurrentSection->tSymbols[symid];
 
 	switch (tSymbol->Type) {
 	case SYM_IMPORT:
-		return sym_GetValue(tSymbol->pzName);
+		return sym_GetValue(pPatch, tSymbol->pzName);
 
 	case SYM_EXPORT:
 	case SYM_LOCAL:
@@ -75,14 +80,14 @@ static int32_t getrealbankfrominternalbank(int32_t n)
 	return n;
 }
 
-static int32_t getsymbank(int32_t symid)
+static int32_t getsymbank(struct sPatch *pPatch, int32_t symid)
 {
 	int32_t nBank;
 	const struct sSymbol *tSymbol = pCurrentSection->tSymbols[symid];
 
 	switch (tSymbol->Type) {
 	case SYM_IMPORT:
-		nBank = sym_GetBank(tSymbol->pzName);
+		nBank = sym_GetBank(pPatch, tSymbol->pzName);
 		break;
 	case SYM_EXPORT:
 	case SYM_LOCAL:
@@ -209,8 +214,8 @@ int32_t calcrpn(struct sPatch *pPatch)
 			t |= (*rpn++) << 8;
 			t |= (*rpn++) << 16;
 			t |= (*rpn++) << 24;
-			rpnpush(getsymvalue(t));
+			rpnpush(getsymvalue(pPatch, t));
-			pPatch->oRelocPatch |= (getsymbank(t) != -1);
+			pPatch->oRelocPatch |= (getsymbank(pPatch, t) != -1);
 			size -= 4;
 			break;
 		case RPN_BANK_SYM:
@@ -219,7 +224,7 @@ int32_t calcrpn(struct sPatch *pPatch)
 			t |= (*rpn++) << 8;
 			t |= (*rpn++) << 16;
 			t |= (*rpn++) << 24;
-			rpnpush(getsymbank(t));
+			rpnpush(getsymbank(pPatch, t));
 			size -= 4;
 			break;
 		case RPN_BANK_SECT:
@@ -229,7 +234,9 @@ int32_t calcrpn(struct sPatch *pPatch)
 			struct sSection *pSection = GetSectionByName(name);
 
 			if (pSection == NULL) {
-				errx(1, "Requested BANK() of section \"%s\", which was not found.\n",
+				errx(1,
+				     "%s(%ld) : Requested BANK() of section \"%s\", which was not found.\n",
+				     pPatch->pzFilename, pPatch->nLineNo,
 				     name);
 			}
 

src/link/symbol.c

@@ -15,6 +15,7 @@
 
 #include "link/main.h"
 #include "link/patch.h"
+#include "link/mylink.h"
 
 #include "types.h"
 
@@ -53,7 +54,7 @@ void sym_Init(void)
 		tHash[i] = NULL;
 }
 
-int32_t sym_GetValue(char *tzName)
+int32_t sym_GetValue(struct sPatch *pPatch, char *tzName)
 {
 	if (strcmp(tzName, "@") == 0)
 		return nPC;
@@ -68,10 +69,13 @@ int32_t sym_GetValue(char *tzName)
 			return ((*ppSym)->nValue);
 	}
 
-	errx(1, "Unknown symbol '%s'", tzName);
+	errx(1,
+	     "%s(%ld) : Unknown symbol '%s'",
+	     pPatch->pzFilename, pPatch->nLineNo,
+	     tzName);
 }
 
-int32_t sym_GetBank(char *tzName)
+int32_t sym_GetBank(struct sPatch *pPatch, char *tzName)
 {
 	struct ISymbol **ppSym;
 
@@ -83,7 +87,10 @@ int32_t sym_GetBank(char *tzName)
 			return ((*ppSym)->nBank);
 	}
 
-	errx(1, "Unknown symbol '%s'", tzName);
+	errx(1,
+	     "%s(%ld) : Unknown symbol '%s'",
+	     pPatch->pzFilename, pPatch->nLineNo,
+	     tzName);
 }
 
 void sym_CreateSymbol(char *tzName, int32_t nValue, int32_t nBank,

src/rgbds.5

@@ -47,7 +47,7 @@ REPT    NumberOfSymbols   ; Number of symbols defined in this object file.
                           ; as "Scope.Symbol".
 
     BYTE    Type          ; 0 = LOCAL symbol only used in this file.
-                          ; 1 = IMPORT this symbol from elsewhere (unused).
+                          ; 1 = IMPORT this symbol from elsewhere
                           ; 2 = EXPORT this symbol to other objects.
 
     IF      Type != 1     ; If symbol is defined in this object file.
@@ -164,8 +164,8 @@ special prefixes for integers and symbols.
 .It Li $33 Ta Li < comparison
 .It Li $34 Ta Li >= comparison
 .It Li $35 Ta Li <= comparison
-.It Li $40 Ta Li << comparison
+.It Li $40 Ta Li << operator
-.It Li $41 Ta Li >> comparison
+.It Li $41 Ta Li >> operator
 .It Li $50 Ta Li BANK(symbol),
 a
 .Ar LONG

test/asm/bracketed-symbols.asm

@@ -0,0 +1,20 @@
+X = 42
+PRINTT "{X}\n"
+PRINTT "{x:X}\n"
+PRINTT "{X:X}\n"
+PRINTT "{d:X}\n"
+PRINTT "{b:X}\n"
+
+Y equ 1337
+PRINTT "{b:Y}\n"
+
+rsreset
+R rb 0
+PRINTT "{d:R}\n"
+
+S equs "You can't format me!"
+PRINTT "{X:S}\n"
+
+SECTION "Test", ROM0
+Label:
+PRINTT "{x:Label}\n"

test/asm/bracketed-symbols.out

@@ -0,0 +1,12 @@
+ERROR: bracketed-symbols.asm(16):
+    Print types are only allowed for numbers
+ERROR: bracketed-symbols.asm(20):
+    Expression must have a constant value
+$2A
+2a
+2A
+42
+101010
+10100111001
+0
+You can't format me!

test/asm/correct-line-number.asm

@@ -0,0 +1,11 @@
+IF 0
+	"\
+	"
+ELIF 1
+	WARN "Am I geting ahead of myself?"
+ELSE
+	"\
+	"
+ENDC
+
+WARN "Hopefully not."

test/asm/correct-line-number.out

@@ -0,0 +1,4 @@
+warning: correct-line-number.asm(5):
+    Am I geting ahead of myself?
+warning: correct-line-number.asm(11):
+    Hopefully not.

test/asm/equ-charmap.asm

@@ -1,4 +1,4 @@
-SECTION "sec", ROM0
 	charmap "A", 1
+SECTION "sec", ROM0[0]
 _A_ EQU "A"
 	db _A_

test/asm/equs-recursion.asm

@@ -0,0 +1,2 @@
+recurse EQUS "recurse"
+recurse

test/asm/equs-recursion.out

@@ -0,0 +1,66 @@
+ERROR: equs-recursion.asm(2):
+    Recursion limit (64) exceeded
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"
+while expanding symbol "recurse"

test/asm/garbage_char.asm

@@ -0,0 +1 @@
+x<EFBFBD>

test/asm/garbage_char.out

@@ -0,0 +1,2 @@
+ERROR: garbage_char.asm(1):
+    Found garbage character: 0xFF

test/asm/include-recursion.asm

@@ -0,0 +1 @@
+INCLUDE "include-recursion.asm"

test/asm/include-recursion.out

@@ -0,0 +1,2 @@
+ERROR: include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1) -> include-recursion.asm(1):
+    Recursion limit (64) exceeded

test/asm/label-macro-arg.asm

@@ -0,0 +1,45 @@
+print: MACRO
+	printv \1
+	printt "\n"
+ENDM
+
+
+m1: MACRO
+x\1
+ENDM
+
+S EQUS "y"
+S2 EQUS "yy"
+
+m2: MACRO
+S\1
+ENDM
+
+	m1 = 5
+	m2 = 6
+	m1 x = 7
+	m2 2 = 8
+
+	print x
+	print y
+	print xx
+	print yy
+
+
+test_char: MACRO
+VAR_DEF equs "sizeof_\1something = 0"
+VAR_DEF
+sizeof_\1something = 1
+	PURGE VAR_DEF
+
+VAR_PRINT equs "printt \"sizeof_\1something equals {sizeof_\1something}\\n\""
+	VAR_PRINT
+	PURGE VAR_PRINT
+ENDM
+
+	test_char _
+	test_char @
+	test_char #
+	test_char .
+
+	test_char :

test/asm/label-macro-arg.out

@@ -0,0 +1,10 @@
+ERROR: label-macro-arg.asm(45) -> label-macro-arg.asm::test_char(31):
+    Macro 'something' not defined
+$5
+$6
+$7
+$8
+sizeof__something equals $1
+sizeof_@something equals $1
+sizeof_#something equals $1
+sizeof_.something equals $1

test/asm/label-redefinition.out

@@ -1,3 +1,3 @@
 ERROR: label-redefinition.asm(7):
-    'Sym' already defined in m(6)
+    'Sym' already defined in label-redefinition.asm::m(6)
-error: Assembly aborted in pass 1 (1 errors)!
+error: Assembly aborted (1 errors)!

test/asm/line-continuation-macro.asm

@@ -0,0 +1,7 @@
+m: MACRO
+ENDM
+
+m2: MACRO
+	m \ ENDM
+
+	m2

test/asm/line-continuation-rept.asm

@@ -0,0 +1,8 @@
+m: MACRO
+ENDM
+
+REPT 1
+	m ENDR
+
+REPT 1
+	m \ ENDR

test/asm/line-continuation-whitespace.asm

@@ -0,0 +1,7 @@
+; Test that \ followed by whitespace after a macro invocation at the end of the
+; file doesn't cause a segfault.
+
+bar: MACRO
+ENDM
+
+foo bar baz\		  		  		  

test/asm/line-continuation.asm

@@ -1 +1,7 @@
-foo @bar\
+; Test that \ after a macro invocation at the end of the file doesn't
+; cause a segfault.
+
+bar: MACRO
+ENDM
+
+foo bar baz\

test/asm/line-continuation.out

@@ -1,2 +0,0 @@
-ERROR: line-continuation.asm(2) -> @(-1):
-    Macro '@' not defined

test/asm/local-ref-without-parent.asm

@@ -0,0 +1,3 @@
+SECTION "sec", ROM0
+
+dw .test

test/asm/local-ref-without-parent.out

@@ -0,0 +1,2 @@
+ERROR: local-ref-without-parent.asm(3):
+    Local label reference '.test' in main scope

test/asm/local-without-parent.asm

@@ -0,0 +1,2 @@
+SECTION "Test", ROM0
+.test:

test/asm/local-without-parent.out

@@ -0,0 +1,2 @@
+ERROR: local-without-parent.asm(2):
+    Local label in main scope

test/asm/local-wrong-parent.out

@@ -1,3 +1,3 @@
 ERROR: local-wrong-parent.asm(5):
     Not currently in the scope of 'WrongParent'
-error: Assembly aborted in pass 1 (1 errors)!
+error: Assembly aborted (1 errors)!

test/asm/long-rpn-expression.asm

@@ -0,0 +1,33 @@
+SECTION "sec", ROM0
+
+X0 EQUS "0"
+
+m: MACRO
+\1 EQUS STRCAT("{X\2}", "+0")
+ENDM
+
+n = 0
+
+REPT $7E
+n1 = n + 1
+NSTR EQUS STRSUB("{n}", 2, STRLEN("{n}") - 1)
+N1STR EQUS STRSUB("{n1}", 2, STRLEN("{n1}") - 1)
+XN1 EQUS STRCAT("X", "{N1STR}")
+    m XN1, {NSTR}
+    PURGE NSTR, N1STR, XN1
+n = n + 1
+ENDR
+
+; string of 127 zeros separated by plus signs
+X EQUS "{X7E}"
+
+    db x+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+\
+       X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+\
+       X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+\
+       X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+\
+       X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+\
+       X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+\
+       X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+\
+       X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X+X
+
+x db 0

test/asm/macro-@.out

@@ -1,2 +1,2 @@
-ERROR: macro-@.asm(1) -> @(-1):
+ERROR: macro-@.asm(1):
     Macro '@' not defined

test/asm/macro-recursion.asm

@@ -0,0 +1,4 @@
+recurse: MACRO
+	recurse
+ENDM
+	recurse

test/asm/macro-recursion.out

@@ -0,0 +1,2 @@
+ERROR: macro-recursion.asm(4) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2) -> macro-recursion.asm::recurse(2):
+    Recursion limit (64) exceeded

test/asm/multiple-charmaps.asm

@@ -0,0 +1,104 @@
+new_: MACRO
+	IF _NARG > 1
+	printt "newcharmap \1, \2\n"
+	newcharmap \1, \2
+	ELSE
+	printt "newcharmap \1\n"
+	newcharmap \1
+	ENDC
+ENDM
+
+set_: MACRO
+	printt "setcharmap \1\n"
+	setcharmap \1
+ENDM
+
+push_: MACRO
+	printt "pushc\n"
+	pushc
+ENDM
+
+pop_: MACRO
+	printt "popc\n"
+	popc
+ENDM
+
+print: MACRO
+x = \1
+printt "{x}\n"
+ENDM
+
+printt "main charmap\n"
+
+charmap "ab", $0
+
+	print "ab"
+
+	new_ map1
+
+	print "ab"
+
+	new_ map2, main
+
+	print "ab"
+
+	set_ map1
+
+	print "ab"
+
+	new_ map3
+
+charmap "ab", $1
+
+	print "ab"
+
+	new_ map4, map3
+
+charmap "ab", $1
+charmap "cd", $2
+
+	print "ab"
+	print "cd"
+
+	set_ map3
+
+	print "ab"
+	print "cd"
+
+	set_ main
+
+SECTION "sec0", ROM0
+
+	print "ab"
+
+printt "override main charmap\n"
+charmap "ef", $3
+
+	print "ab"
+	print "ef"
+
+	set_ map1
+
+	push_
+	set_ map2
+	push_
+
+	set_ map3
+
+	print "ab"
+	print "cd"
+	print "ef"
+
+	pop_
+
+	print "ab"
+
+	pop_
+
+	print "ab"
+
+	new_ map1
+
+	set_ map5
+
+	pop_

test/asm/multiple-charmaps.out

@@ -0,0 +1,44 @@
+warning: multiple-charmaps.asm(75):
+    Using 'charmap' within a section when the current charmap is 'main' is deprecated
+ERROR: multiple-charmaps.asm(100) -> multiple-charmaps.asm::new_(7):
+    Charmap 'map1' already exists
+ERROR: multiple-charmaps.asm(102) -> multiple-charmaps.asm::set_(13):
+    Charmap 'map5' doesn't exist
+ERROR: multiple-charmaps.asm(104) -> multiple-charmaps.asm::pop_(23):
+    No entries in the charmap stack
+main charmap
+$0
+newcharmap map1
+$6162
+newcharmap map2, main
+$0
+setcharmap map1
+$6162
+newcharmap map3
+$1
+newcharmap map4, map3
+$1
+$2
+setcharmap map3
+$1
+$6364
+setcharmap main
+$0
+override main charmap
+$6162
+$3
+setcharmap map1
+pushc
+setcharmap map2
+pushc
+setcharmap map3
+$1
+$6364
+$6566
+popc
+$0
+popc
+$6162
+newcharmap map1
+setcharmap map5
+popc

test/asm/narg-decreases-after-shift.asm

@@ -0,0 +1,14 @@
+testing: MACRO
+	db _NARG
+	shift
+	db _NARG
+	shift
+	db _NARG
+	shift
+	db _NARG
+	shift
+	db _NARG
+ENDM
+
+SECTION "Test output", ROM0[0]
+	testing 1, 2, 3

test/asm/nested-if.asm

@@ -0,0 +1,18 @@
+if 0
+	if(1)
+	endc
+	if 1
+	endc
+	if{x}
+	endc
+endc
+
+if 1
+else
+	if(1)
+	endc
+	if 1
+	endc
+	if{x}
+	endc
+endc

test/asm/null-in-macro.out

@@ -1,2 +1,2 @@
-ERROR: null-in-macro.asm(1):
+ERROR: null-in-macro.asm(2):
-    Unterminated MACRO definition.
+    Found null character

test/asm/operator-precedence.asm

@@ -0,0 +1,7 @@
+print: MACRO
+	printv \1
+	printt "\n"
+ENDM
+
+	print 1 == 1 || 1 == 2
+	print (1 == 1) || (1 == 2)

test/asm/operator-precedence.out

@@ -0,0 +1,2 @@
+$1
+$1

test/asm/overflow.asm

@@ -0,0 +1,42 @@
+SECTION "sec", ROM0
+
+print_x: MACRO
+	printv x
+	printt "\n"
+ENDM
+
+x = 2147483647
+x = x + 1
+	dl 2147483647+1
+	print_x
+
+x = -2147483648
+x = x - 1
+	dl -2147483648-1
+	print_x
+
+x = -2147483648
+x = x * -1
+	dl -2147483648 * -1
+	print_x
+
+x = -2147483648
+x = x / -1
+	dl -2147483648 / -1
+	print_x
+
+x = -2147483648
+x = x % -1
+	dl -2147483648 % -1
+	print_x
+
+x = -1
+x = x << 1
+	dl -1 << 1
+	print_x
+
+x = 4294967295
+x = 4294967296
+
+x = `33333333
+x = `333333333

test/asm/overflow.out

@@ -0,0 +1,18 @@
+warning: overflow.asm(24):
+    Division of min value by -1
+warning: overflow.asm(25):
+    Division of min value by -1
+warning: overflow.asm(34):
+    Left shift of negative value: -1
+warning: overflow.asm(35):
+    Left shift of negative value: -1
+warning: overflow.asm(39):
+    Integer constant '4294967296' is too large
+warning: overflow.asm(42):
+    Graphics constant '`333333333' is too long
+$80000000
+$7FFFFFFF
+$80000000
+$80000000
+$0
+$FFFFFFFE

test/asm/pops-no-pushed-sections.asm

@@ -0,0 +1 @@
+POPS