Commit Graph
6 Commits
Author SHA1 Message Date
Ben10do 38372c59ed Verify that IFs, REPTs and MACROs are terminated
Ensure that IF constructs, REPT blocks, and MACRO defintions are terminated with ENDC, ENDR, or ENDM respectively. If they are not, print an error and stop assembly.

As well as aiding a forgetful programmer, this reduces the risk of memory problems if the file ends less than four bytes after the block starts.
2017-02-02 16:27:53 +00:00
Ben10do 420ea638a7 Refactor section assignment in linker
Deduplicates and generalises a lot of code in assign.c:

- Replace area_AllocAbs*AnyBank() with area_AllocAbsAnyBank() function
that accepts a section type parameter
- Replace area_Alloc*AnyBank() with area_AllocAnyBank()
- Replace FindLargest*() with FindLargestSection()
- Replace Assign*Sections() with AssignBankedSections()
- Add VerifyAndSetBank(), which enables bank checks (and addition with
BANK_*) to be centralised
- Refactor the initialisation of AssignSections(), removing some magic
numbers and only setting MaxAvail[i] once
- Overhaul the duplicated cases throughout AssignSections()
2017-01-27 08:56:36 +00:00
Ben10do b40c567aee Add ldi a, [hl] and ldd a, [hl] instructions
These are equivalent to ld a, [hl+] and ld a, [hl-] respectively.
2017-01-26 16:55:00 +00:00
Ben10do 06f0472f81 Emit a single error when using BANK incorrectly
Previously, if BANK is used when defining a section that’s not ROMX,
WRMAX, SRAM or VRAM, a second error message would appear, e.g. “(null)
bank value $1 out of range $5d to $0”.

This would appear due to the usage of uninitialised variables. This
change ensures that the uninitialised variables are not accessed when
using an invalid section.

This also silences compiler warnings about usage of uninitialised
variables.
2017-01-24 11:50:18 +00:00
Ben10do defd4f589e Add noreturn attribute to fatalerror()
Should silence compiler warnings that expect fatalerror() to return.
2017-01-24 11:38:26 +00:00
Ben10do e86a70d2cb Fix the name of the GNUmakefile
GNU make actually looks for ‘GNUmakefile’, not ‘GNUMakefile’.

Consequently, GNU make would erroneously attempt to use the standard
makefile, instead of the GNU-specific one. This would cause an error
when attempting to import png.h, due to PNGFLAGS not being correctly
set.
2017-01-23 23:46:44 +00:00