e909c7c133
Nothing here changes what a tool computes; it changes where tools look. - tools/re-capture: 33 censuses globbed /work/sylph_extract, a path that has existed nowhere since /work became a clone, so they matched nothing and printed empty results. They now resolve the disc through a new disc.py from $SYLPHEED_DISC and exit loudly without it (the #44 fix, generalised). Nine scripts that imported siblings from the retired Reborn checkout or an old session scratchpad now import from their own directory. unitgroup.py only needs the variable when --pak is not given. - sylpheed-xex: the loader only ever uses the XEX2 retail key. The dead devkit key and a doc comment claiming a devkit fallback that does not exist are gone; Project Sylpheed is a retail XEX2, so no XEX1 key either. - sylpheed-viewer: real_font_rasterizes looked for /tmp/sylph_extract and so always skipped. It reads $SYLPHEED_DISC now, and passes against the disc. - Comments and docs that named xenia-rs, the Reborn repository or /work/*.pe as places to look now name sylpheed.db, Canary's ppc_context.h and the flat .pe; docs/re/README.md no longer says the native Canary build does not run. Historical records keep their original paths: findings that were measured against /work/xenia-rs/sylpheed.db still say so. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
//! Cross-check our decoder against xenia-canary's authoritative encoding table.
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//!
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//! Canary's `ppc_opcode_table_gen.cc` lists, for every opcode it knows, a
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//! representative instruction word with the operand fields zeroed. Feeding each
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//! word to our decoder must yield the matching opcode — anything else is a hole
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//! or a mis-decode in our tables.
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//!
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//! ```text
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//! cargo run --release -p sylpheed-ppc --example decode_table_check -- <table.txt>
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//! ```
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//! where each line is `0xWORD name`.
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use std::io::BufRead;
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let path = std::env::args()
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.nth(1)
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.ok_or("usage: decode_table_check <table>")?;
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let f = std::io::BufReader::new(std::fs::File::open(path)?);
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let (mut ok, mut bad, mut invalid) = (0u32, 0u32, 0u32);
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for line in f.lines() {
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let line = line?;
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let mut it = line.split_whitespace();
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let (Some(w), Some(name)) = (it.next(), it.next()) else {
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continue;
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};
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let word = u32::from_str_radix(w.trim_start_matches("0x"), 16)?;
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let d = sylpheed_ppc::decoder::decode(word, 0x8200_0000);
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let got = format!("{:?}", d.opcode);
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if got == name {
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ok += 1;
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} else if got == "Invalid" {
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invalid += 1;
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println!("MISSING {w} {name:<14} -> Invalid");
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} else {
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bad += 1;
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println!("MISMATCH {w} {name:<14} -> {got}");
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}
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}
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println!("\nmatched {ok}, mismatched {bad}, missing {invalid}");
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Ok(())
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}
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