Comments (1)
In addition, for purposes of comparison, constants like these are treated as undefined, but the opposite case still gets parsed. This is in contrast to real undefined constants, for which the opposite use case is not parsed.
Contrived example:
sanky@warata:~/romhacking/rgbds_$ cat test.asm
SECTION "rst00",HOME[0]
IF !DEF(WHATEVER)
db "_WHATEVER IS NOT DEFINED\n"
ENDC
IF DEF(WHATEVER)
stop
db "_WHATEVER IS DEFINED\n"
ENDC
sanky@warata:~/romhacking/rgbds_$ ./rgbasm -o test_ test.asm
sanky@warata:~/romhacking/rgbds_$ cat test_
RGB2�������_WHATEVER IS NOT DEFINED
sanky@warata:~/romhacking/rgbds_$ gedit test.asm
sanky@warata:~/romhacking/rgbds_$ cat test.asm
SECTION "rst00",HOME[0]
IF !DEF(_Z80)
db "_Z80 IS NOT DEFINED\n"
ENDC
IF DEF(_Z80)
db "_Z80 IS DEFINED\n"
ENDC
sanky@warata:~/romhacking/rgbds_$ ./rgbasm -o test_ test.asm
sanky@warata:~/romhacking/rgbds_$ cat test_
RGB2�������_Z80 IS NOT DEFINED
sanky@warata:~/romhacking/rgbds_$ gedit test.asm
sanky@warata:~/romhacking/rgbds_$ cat test.asm
SECTION "rst00",HOME[0]
IF !DEF(_Z80)
db "_Z80 IS NOT DEFINED\n"
ENDC
IF DEF(_Z80)
stop
db "_Z80 IS DEFINED\n"
ENDC
sanky@warata:~/romhacking/rgbds_$ ./rgbasm -o test_ test.asm
ERROR: test.asm(7) :
STOP is not a Z80 instruction
rgbasm: Assembly aborted in pass 1 (1 errors)!
sanky@warata:~/romhacking/rgbds_$
from rgbds.
Related Issues (20)
- Use libplum for RGBGFX HOT 7
- RGBGFX's `--color-curve` may be incorrect HOT 16
- Add tests to improve code coverage HOT 2
- Check code with `clang-format` and/or `clang-tidy`, not checkpatch.pl
- `-Wtruncation=1` warns on -$100, -$10000, etc.
- Feature request: RGBGFX auto-named output to a different directory than input HOT 2
- Rename the RGBGFX `--output-*` options to `--auto-*` HOT 5
- Allow RGBGFX to output SNES attribute maps HOT 2
- [Feature request] Allow negative alignment offsets HOT 2
- [Feature request] `rgbgfx -r` should encode the reverse image appropriately HOT 2
- Rewrite the linkerscript parser to use Bison HOT 1
- Add generic Linux x86_64 binaries to old releases HOT 6
- Abbreviate `s.begin(), s.end()` with a `RANGE(x)` macro
- Warn or error if linker script `ALIGN` is out of range
- Allow specifying align offsets in a linker script
- Add tests to improve RGBLINK code coverage
- Warning/error function refactoring HOT 2
- Update dates in man pages
- Segfault in RGBGFX given a transparent+3-color PNG HOT 1
- `ALIGN 16` inconsistently works or breaks
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from rgbds.