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>
Not all occurrences have been replaced, in some cases they have been
left as they were before (like in rgbgfx and when they are in the
interface of a C standard library function).
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
This is useful to generate error messages when there is a symbol that
appears in more than one object file.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
Unions allow multiple memory allocations (using ds, etc.) to share the
same space in memory.
This allows games to use the same memory for different purposes,
depending on their state.
This also adds documentation on how to use the new UNION, NEXTU, and
ENDU keywords.
If the folder where the code is compiled is a valid git repository, the
version string is generated with `git describe`. If it isn't a valid
repository, a string included in the source code is used instead. This
one must be updated regularly as the toolchain is developed.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
In addition, make some formatting changes, and add some extra error handling (for when ELIF, ELSE, or ENDC are encountered without a corresponding IF).
There are two ways in which the assembly process can fail:
1. If there is a really big problem that compromises the whole process,
the assembler has to stop right there and generate an error message.
This happens with unterminated REPT loops, macros, etc.
2. If the problem isn't that big and the process can still continue,
even though the final result is invalid, the assembler can try to
continue and warn the user about all errors it finds in the code.
This patch clarifies the use of each function and replaces the function
used in two places by the correct one.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
Instead of allocating 0x4000 bytes for all sections and resize them as
needed, allocate 0x8000 bytes and don't let them to be resized. This is
the max possible size (ROM0 when ROMX sections aren't present).
Buffers are not needed for RAM sections, this patch changes the code so
that it only allocates buffers for ROM sections.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
rgblink option -w has been restored to its previous behaviour: make WRAM
a continous section instead of spliting it into WRAM0 and WRAMX.
To enable DMG mode, option -d has to be used instead. This option
automatically enables -w.
Update tests.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
