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Add support for libcalls.

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This commit is contained in:
Nick Lewycky
2020-05-04 20:38:58 -07:00
parent df9e056b5b
commit 72899ccd47
1 changed files with 19 additions and 1 deletions
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20
lib/compiler-llvm/src/translator/code.rs
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@ -375,8 +375,26 @@ impl FuncTranslator {
offset,
addend,
});
} else if target.st_type() == goblin::elf::sym::STT_NOTYPE
&& target.st_shndx == goblin::elf::section_header::SHN_UNDEF as _
{
// Not defined in this .o file implies that it should
// be a libcall.
let name = target.st_name;
let name = elf.strtab.get(name).unwrap().unwrap();
if let Some(libcall) = libcalls.get(name) {
relocations.push(Relocation {
kind,
reloc_target: RelocationTarget::LibCall(*libcall),
offset,
addend,
});
} else {
unimplemented!("reference to unknown libcall {}", name);
}
} else {
unimplemented!("unknown relocation {:?} with target {:?}", reloc, target);
}
// TODO: runtime functions
}
}