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Improve MIPS ABI auto-detection

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This commit is contained in:
Luke Street 2024-06-20 19:57:18 -06:00
parent 97981160f4
commit 95615c2ec5
1 changed files with 12 additions and 6 deletions
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18
objdiff-core/src/arch/mips.rs
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@ -27,8 +27,8 @@ pub struct ObjArchMips {
const EF_MIPS_ABI: u32 = 0x0000F000;
const EF_MIPS_MACH: u32 = 0x00FF0000;
const E_MIPS_MACH_ALLEGREX: u32 = 0x00840000;
const E_MIPS_MACH_5900: u32 = 0x00920000;
const EF_MIPS_MACH_ALLEGREX: u32 = 0x00840000;
const EF_MIPS_MACH_5900: u32 = 0x00920000;
impl ObjArchMips {
pub fn new(object: &File) -> Result<Self> {
@ -38,13 +38,19 @@ impl ObjArchMips {
FileFlags::None => {}
FileFlags::Elf { e_flags, .. } => {
abi = match e_flags & EF_MIPS_ABI {
elf::EF_MIPS_ABI_O32 => Abi::O32,
elf::EF_MIPS_ABI_O32 | elf::EF_MIPS_ABI_O64 => Abi::O32,
elf::EF_MIPS_ABI_EABI32 | elf::EF_MIPS_ABI_EABI64 => Abi::N32,
_ => Abi::NUMERIC,
_ => {
if e_flags & elf::EF_MIPS_ABI2 != 0 {
Abi::N32
} else {
Abi::NUMERIC
}
}
};
instr_category = match e_flags & EF_MIPS_MACH {
E_MIPS_MACH_ALLEGREX => InstrCategory::R4000ALLEGREX,
E_MIPS_MACH_5900 => InstrCategory::R5900,
EF_MIPS_MACH_ALLEGREX => InstrCategory::R4000ALLEGREX,
EF_MIPS_MACH_5900 => InstrCategory::R5900,
_ => InstrCategory::CPU,
};
}