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* Allow constants in asan:reserve statementsMiquel Sabaté Solà2025-12-152-0/+21
| | | | | | | | | | | | | | | | This way, if you define a constant like: MY_BUFFER_LEN_IN_BYTES = $10 You can then declare your buffer like so: zp_buffer = $00 ; asan:reserve MY_BUFFER_LEN_IN_BYTES And then further in the code you can rely on just using the constant for bound checking, and then the address sanitizer will check on bound checks via static analysis as well. Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com>
* asan: Add fixes on absolute/indirect addressingMiquel Sabaté Solà2025-09-032-0/+5
| | | | | | The check was not being applied on certain conditions. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Apply asan:ignore also when bundlingMiquel Sabaté Solà2025-09-031-0/+2
| | | | | | | This way instructions which might make use of bare memory numbers can freely ignore the address sanitizer when it actually makes sense. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Add a check for variable namesMiquel Sabaté Solà2025-09-032-0/+29
| | | | | | | This check ensures that asan-friendly names actually match their expected scope. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Validate that memory access is done via variablesMiquel Sabaté Solà2025-09-032-0/+41
| | | | | | | | | | | | | The address sanitizer is now able to detect whenever in an instruction a memory access is done without using variables. This is now detected for all instructions except for branching, which falls outside of this scope. Moreover, simple arithmetics is allowed and bounds are checked for simple cases. That being said, more involved bound checks should be done with other tools (e.g. emulators). Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Add a warning for each unused variableMiquel Sabaté Solà2025-09-023-0/+19
| | | | Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Rebump end-to-end tests to work via git submodulesMiquel Sabaté Solà2025-08-185-0/+62
| | | | | | | | | | This provides a more up-to-date experience, while also allowing to test more cases. Moreover, the latest flags from 'xa65' are being used. All in all, both 'code.nes' and 'aoc2023.nes' appear to be working after the latest fixes. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* nasm: Implement the -D flagMiquel Sabaté Solà2025-01-224-0/+18
| | | | | | | This allows users to define variables directly from the command line, which is useful for testing purposes. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* tests: Add aoc2023.nes to end-to-end testsMiquel Sabaté Solà2025-01-221-0/+0
| | | | Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* tests: Update code.nes so -Werror can be passedMiquel Sabaté Solà2025-01-131-0/+0
| | | | | | | | | Update the underlying code.nes test data so it uses a tighter configuration for NROM which in turn frees nasm from complaining about empty segments. This makes room to allo for -Werror so we catch warnings that might appear in the future. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* tests: Bundle end-to-end tests into a tarballMiquel Sabaté Solà2025-01-1011-1359/+0
| | | | | | | | This way I can simply compress all the examples to traverse with a single file, and thus no longer polluting this repository from code from other repositories. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Add missing binary for end-to-end testsMiquel Sabaté Solà2025-01-091-0/+0
| | | | Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Implement the .include statementMiquel Sabaté Solà2025-01-094-0/+462
| | | | | | | | | | | | | | This needed some heavy lifting when it comes to how files were located. This means that statements like .include/.incbin now take into consideration a new list made out of SourceInfo, which holds enough information to translate from which file a node comes from. This has also been added into errors, so they are more informative on what went wrong. In order to tests this, besides all the regular unit tests, a new e2e test has been added. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Rename to tools.nesMiquel Sabaté Solà2024-12-252-4/+4
| | | | | | | | | | Let's continue with the good ol' tradition of being terrible at naming things. I have also renamed another project which was referenced here, so update all references as well. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Add support for UxROM chipsMiquel Sabaté Solà2024-12-202-0/+279
| | | | | | I have also added an end-to-end test for it. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
* Introduce end-to-end testsMiquel Sabaté Solà2024-12-203-0/+618
For now I have added the most simple example for an NES/Famicom game, which I already had on a private repository (that I plan to open source soonish). Tests simply run `nasm` on known source files and compares the results with an .nes ROM file that has the exact bytes that we expect. Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>