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.
This option has been added to all programs of the toolchain, and it
prints the version string of the toolchain.
Manpages and help command line output updated.
Add missing 'w' flag to the command line output of rgbasm. It was
correctly documented in the manpages.
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).
Some commands, such as `DS`, `BANK[n]`, etc, don't allow the use of
negative constants, but there wasn't any check to prohibit the code from
trying to do so.
This patch adds the `uconst` type to the parser to use when a constant
is expected, but it mustn't be negative.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
- Local labels can now be exported.
- Local labels can be declared as Scope.Label in addition of .Label.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
Local symbols can now be referenced outside the scope of their parent, by using the syntax “Parent.Chlid”.
- Local symbol names are now stored internally as “Parent.Child”.
- The symbol’s scope field no longer forms a linked list of the prior local symbols; it will now always contain the parent.
- Add the ability use EXPORT and GLOBAL with local symbols.
- Reduce duplication between findsymbol() and findpsymbol(), as well as between sym_AddLocalReloc() and sym_AddReloc().
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>
This is hard to detect in MACROs, as there are legitimate uses for
MACROs that call themselves recursively.
For an EQUS, the problem is that its value may be modified at different
points in the source code, so the only way to detect a possible problem
is by doing an analysis at each usage of the EQUS.
Also, since an EQUS may expand to the name of a MACRO and a MACRO can
use an EQUS, it becomes even harder to check all possible problems that
come out of it. It's better to let this task to the programmer.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
When allocating a section, allocate only the max possible size for that
type (only applies to ROM0 and ROMX).
When finding an overflow, in any kind of section, output an error with
the location of the line of code that caused the overflow.
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>
Files that weren't found with the absolute path weren't added as
dependencies even if they were found after considering the list of
include directories.
This patch makes rgbasm print the complete path (including the include
directory path) in these cases.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
For some reason, `No` looks weird in the HTML version of the docs.
Some other random fixes.
Tables in src/asm/rgbasm.5 are still broken in the HTML docs.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
`LD HL,n16` and `LD SP,n16` are handled in a different rule as
`LD r16,n16`, but they are also part of that rule.
This patch converts the `LD r16,n16` rule into two rules, one for doing
`LD BC,n16` and other one for `LD DE,n16`.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
Added `__TIMESTAMP_ISO_8601_LOCAL__` and `__TIMESTAMP_ISO_8601_UTC__`,
with the correct ISO 8601 representation of time and date from years to
seconds (including local timezone in the local time string).
Also, if the current time cannot be obtained from the OS, it will output
a warning and the time strings will be filled with '?' instead of
numbers and characters.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
If they don't have quotes when passed to sym_AddString() they can't be
used at all by the assembler. I suppose nobody actually used them, they
seem to have been broken forever.
Added a comment to the function to say how to use it correctly for
strings.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
IMPORT is simply useless, any symbol that isn't found in the current
file is automatically flagged as imported symbol.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
The error message shouldn't specify the name of the binary, that's
supposed to be known by the caller.
Update test reference outputs.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
They work with the 16-bit registers BC, DE and HL, returning the
corresponding 8-bit register. HIGH() works with AF as well, returning A.
They also work with any kind of constant or symbol, generating a RPN
patch in the object file if the value is not defined at assembly time.
They work with macro arguments as well.
Signed-off-by: Antonio Niño Díaz <antonio_nd@outlook.com>
A lot of warnings are being added (and more will come) so it makes sense
to be able to disable them in legacy source that generates warnings but
is otherwise correct.
Signed-off-by: AntonioND <antonio_nd@outlook.com>
Replace spaces by tabs for consistency. The rest of the codebase uses
tabs, so the linkerscript parser has to change.
Removed trailing tabs in all codebase.
Signed-off-by: AntonioND <antonio_nd@outlook.com>
