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Object file support for s390x (#2872)

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Add support for s390x binary format object files.  In particular,
add support for s390x ELF relocation types (currently only
S390xPCRel32Dbl).
This commit is contained in:
Ulrich Weigand
2021-05-03 18:50:00 +02:00
committed by GitHub
parent 7a3791f9e9
commit e1cc1a67d5
7 changed files with 34 additions and 0 deletions
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13
crates/jit/src/link.rs
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@@ -111,6 +111,19 @@ fn apply_reloc(
);
write_unaligned(reloc_address as *mut u32, reloc_delta_u64 as u32);
},
#[cfg(target_pointer_width = "64")]
(RelocationKind::Relative, RelocationEncoding::S390xDbl, 32) => unsafe {
let reloc_address = body.add(offset as usize) as usize;
let reloc_addend = r.addend() as isize;
let reloc_delta_u64 = (target_func_address as u64)
.wrapping_sub(reloc_address as u64)
.wrapping_add(reloc_addend as u64);
assert!(
(reloc_delta_u64 as isize) >> 1 <= i32::max_value() as isize,
"relocation too large to fit in i32"
);
write_unaligned(reloc_address as *mut u32, (reloc_delta_u64 >> 1) as u32);
},
(RelocationKind::Elf(elf::R_AARCH64_CALL26), RelocationEncoding::Generic, 32) => unsafe {
let reloc_address = body.add(offset as usize) as usize;
let reloc_addend = r.addend() as isize;