Should partially cover #178 and close#270.
This allows printing numbers in different bases and without the dollar prefix
This is especially useful in macros because the dollar isnt a valid character
for symbol names, requiring heavy `STRSUB` usage.
Charmap's previous structure was using brute-force comparison for
converting the strings in source files. It always compared given
strings to all of the strings in charmap, which was very costly
in huge projects.
For its improvement, I changed its structure into trie, which is
being used in many string-processing areas. It's now much faster
than before.
The createpatch() function was using a fixed-size buffer. I've changed it
to be dynamically allocated. I saw that the RPN format used in patches is
slightly different from the one used internally in the assembler, so I
added a new member to the Expression struct to track the patch size.
I've also limited the RPN expression length to 1MB. I realized that the
patch RPN expression could potentially be longer than the internal RPN
expression, so the internal expression would need a limit smaller than
UINT32_MAX. I thought 1MB would be a reasonable limit.
The linker script now allows you to assign a section with the same
attributes as in the source.
To do this, I've removed a check from AssignSectionAddressAndBankByName
that would never be triggered, due to that condition being checked
before. Shouldn't this and IsSectionSameTypeBankAndAttrs be condensed
into a single function?
Added define 'unused_' for '__attribute__((unused))'. The oldest version
of GCC with online docs (GCC 2.95.3, released in March 16, 2001 [1])
already has support for this attribute, so it doesn't make sense to
check the version.
Renamed 'noreturn' to 'noreturn_' for consistency.
[1] https://gcc.gnu.org/onlinedocs/
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
`__attribute__((noreturn))` has been supported since GCC 2.5, that was
released October 22, 1993. It doesn't make sense to check if the version
is at least that one, we are compiling for C99, that is more modern. [1]
Also, remove the MSVC check. This code is never compiled with it so
there may be problems that need to be solved to make it compile. All
releases cross-compiled from linux. If there is an actual need to
support MSVC, the compiler definitions can be added again.
Also, if the compiler is not supported, the compiler helpers default to
nothing, so the code can still compile.
[1] https://gcc.gnu.org/onlinedocs/
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
rgbasm tries to optimize any loads from/to $FF00-$FFFF and generate
LDH 2-byte opcodes instead of regular LD 3-byte opcodes. This is a bit
inconsistent as it only works for constant values. If a load is trying
to access a label in a HRAM floating section, or a section found in a
different object file, this optimization doesn't work.
This means that a simple refactor or code could allow rgbasm to perform
the optimzation or prevent it from doing so. For certain projects, like
disassemblies, this is a problem.
This patch adds flag -L to rgbasm to disable the optimization, and
doesn't change the behaviour of any other existing code.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
Previously, JR was only allowed if the destination label was in the same
section as the JR. This patch removes this restriction. The check to see
if the relative value overflows is now done when linking the ROM.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
By removing this dependency, all of the code of this repository is
licensed under the MIT license.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
There was only one place where `strlcat` was used, and `snprintf`
actually does a better job at what the code was trying to achieve.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
With permission from the main authors [1], most of the code has been
relicensed under the MIT license.
SPDX license identifiers are used so that the license headers in source
code files aren't too large.
Add CONTRIBUTORS.rst file.
[1] https://github.com/rednex/rgbds/issues/128
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
Now, when POPS is executed, it restores the symbol scope of the
corresponding PUSHS. That way, the local symbols previously available
can be used again after the POPS.
This is useful in cases like this one:
```
SECTION "Section 1", ROMX
BigFunction:
...
.loop:
...
PUSHS
SECTION "Section 2", ROMX
DataForBigFunction:
DB 1, 2, 3, 4, 5
POPS
ld a,BANK(DataForBigFunction)
ld hl,DataForBigFunction
...
jr .loop
```
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
The bank of a section can be requested with `BANK("Section Name")`, and
the bank of the current section with `BANK(@)`. In both cases, the bank
number is resolved by the linker.
New commands have been added to the list of RPN commands of object
files, and the rest has been moved so that new additions don't force a
new change in the number of the enumerations.
Increase object file version, as it is now incompatible with the old
format.
Update manpages to reflect the new ways of using `BANK()` and the new
format of the object files.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
It made sense to have them in different files when the toolchain
targeted systems other than the GB. Now, there are no generic and
system-specific keywords because there is only one supported system.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
