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Prefer references to _savegpr_14 over __savegpr

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Same for `__restore_gpr`, `__save_fpr` and `__restore_fpr`.
A common issue that can be solved with a little bit
of special-casing.
This commit is contained in:
Luke Street
2024-04-30 18:04:50 -06:00
parent dc7e307c44
commit c1c4373e53
1 changed files with 18 additions and 9 deletions
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27
src/obj/symbols.rs
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@@ -583,15 +583,24 @@ pub fn best_match_for_reloc(
}
symbols.sort_by_key(|&(_, symbol)| {
let mut rank = match symbol.kind {
ObjSymbolKind::Function | ObjSymbolKind::Object => match reloc_kind {
ObjRelocKind::PpcAddr16Hi
| ObjRelocKind::PpcAddr16Ha
| ObjRelocKind::PpcAddr16Lo => 1,
ObjRelocKind::Absolute
| ObjRelocKind::PpcRel24
| ObjRelocKind::PpcRel14
| ObjRelocKind::PpcEmbSda21 => 2,
},
ObjSymbolKind::Function | ObjSymbolKind::Object => {
// HACK: These are generally not referenced directly, so reduce their rank
if matches!(
symbol.name.as_str(),
"__save_gpr" | "__restore_gpr" | "__save_fpr" | "__restore_fpr"
) {
return 0;
}
match reloc_kind {
ObjRelocKind::PpcAddr16Hi
| ObjRelocKind::PpcAddr16Ha
| ObjRelocKind::PpcAddr16Lo => 1,
ObjRelocKind::Absolute
| ObjRelocKind::PpcRel24
| ObjRelocKind::PpcRel14
| ObjRelocKind::PpcEmbSda21 => 2,
}
}
// Label
ObjSymbolKind::Unknown => match reloc_kind {
ObjRelocKind::PpcAddr16Hi