tools.nes/lib/xixanta/src, branch main

xixanta: Add an hint for the ending of data labels

2026-10-09T19:31:33Z

Some raw labels may point at a bunch of data laid out with the .byte family of statements. Add hints for each of these labels so we also have a range for them. This way, tools like 'vnf' might be able to detect bad accesses and these sets of data. Signed-off-by: Miquel Sabaté Solà

Don't error out on conditional .include

2026-10-06T15:33:16Z

The hard requirement that an .include statement cannot be inside of another block was, in the end, a bit short-sighted. Imagine the following block: .ifdef DEBUG .include "debug.s" .endif This is perfectly sound-looking code, and it should not be punished as the developer is doing something that is not bending the assembler in weird ways. Hence, just nuke this check. Signed-off-by: Miquel Sabaté Solà

nasm: warn on labels that point out of bounds

2026-09-29T21:37:48Z

Signed-off-by: Miquel Sabaté Solà

xixanta: simplify evaluate_hexadecimal()

2026-09-15T16:03:36Z

The 'size' variable can be initialized directly from the value we get from the match statement below. I was probably thinking more on the style of C, but the latest Rust stable channel complained about this. Signed-off-by: Miquel Sabaté Solà

Remove the 'affected_on_page' member

2026-09-06T13:47:46Z

It was created a long time ago in the hopes that it would be useful whenever I wanted to create an emulator, but when that happened in the form of 'runrom' I've seen that it's really not needed. Remove it as it just pollutes the source code with hundreds of useless lines. Signed-off-by: Miquel Sabaté Solà

Fix cycle count for the plp instruction

2026-08-27T05:09:07Z

Signed-off-by: Miquel Sabaté Solà

Do not mark some valid identifiers as invalid

2026-08-18T14:44:27Z

Some identifiers like "@aa" were marked as invalid as "aa" is a potentially hexadecimal value, but the "@" symbol actually disambiguates this situation. Hence, if a non-alphanumeric character (that the parser liked) is actually found, ensure it cannot be considered as an hexadecimal value. Provide also a test of is_valid_identifier(). The list is certainly not exhaustive, but it should be good enough coupled with end-to-end tests. Signed-off-by: Miquel Sabaté Solà

Validate labels when walking through the context

2026-08-18T14:41:34Z

The parser does not validate label names completely (it only takes care of validating that it something that makes sense syntactically). The assembler can tell whether the label is actually taking a reserved name, or an invalid hexadecimal constant, etc. Before this commit a user would get a cryptic "invalid identifier" message when referencing an invalid label (e.g. "jmp 1234"). Fix this by validating the identifier there, but also when the label was defined before any of this. Signed-off-by: Miquel Sabaté Solà

Add global labels

2026-08-18T14:39:37Z

These are labels that are declared by prefixing a '#' symbol to the name, and it allows the label to be declared at the global scope instead of the current one. This is a feature which is not to be abused so to not make scopes pointless, but it can be quite handy with some optimizations while not abandoning scopes completely. Signed-off-by: Miquel Sabaté Solà

Fix the opcode for the 'sed' instruction

2026-08-17T21:07:03Z

Signed-off-by: Miquel Sabaté Solà