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>
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>
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>
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>
If the next release is going to break compatibility with older object
file formats it doesn't make sense to keep this.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
Files can now be included with the following syntax:
INCLUDE "path.link"
The maximum include depth is 5.
Fixed linkerscript parser and lexer error messages so that they are more
informative (show file and line of the error).
Man page updated.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
This patch isn't used because it's meant to be an optimization for
labels in the memory region 0x2000-0x20FF. That memory region doesn't
have anything special on the Game Boy, and there are no instructions
optimized to read or write from there, so it was probably meant for
another hardware that was supported by ASMotor in the past.
Signed-off-by: AntonioND <antonio_nd@outlook.com>
Even though the bank number was read from the linkerscript and the
linker verified that each section could be mapped in the final rom, the
bank number was never actually set by the linkerscript parser.
Signed-off-by: AntonioND <antonio_nd@outlook.com>
To make the behaviour of the linkerscript consistent, every section read
from an object file must have an unique name. This is needed as the
linkerscript uses the name of sections to place them and it expects
every section to have a different name.
This doesn't break compatibility with the old behaviour that allowed to
continue sections if they had the same name, bank number and starting
address. That's still allowed because `rgbasm` outputs a single section
if this functionality is used, it is transparent to `rgblink`.
Signed-off-by: AntonioND <antonio_nd@outlook.com>
Previously, some instances of the number of banks for each section remained hardcoded. These have been replaced with BANK_COUNT_* constants.
As a side-effect, this could fix a theoretical bug when using BANK(label) when the label is in a high SRAM bank (≥ 4).
Aligned sections can now be created with out_NewAlignedSection(). This information is stored in created object files, and read by the linker.
The names of each section are also included in the object file, enabling potential improvements to error messages in the future.
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()
