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build/elf: handle SHT_RELR sections #744

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fg-scontain
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Hi, I was using the elf builder with a binary from alpine 3.20. Apparently, that binary uses relative relocations (#722). The following changes made the builder accept the binary.

@@ -227,7 +227,7 @@ impl<'data> Builder<'data> {
| elf::SHT_LLVM_DEPENDENT_LIBRARIES => {
SectionData::Data(section.data(endian, data)?.into())
}
elf::SHT_REL | elf::SHT_RELA => relocations,
elf::SHT_REL | elf::SHT_RELA | elf::SHT_RELR => relocations,
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This doesn't seem correct because we don't currently parse SHT_RELR relocations, so relocations will be empty.

@philipc
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philipc commented Nov 21, 2024

I think it's best to add full support for SHT_RELR to the crate instead of trying to do a minimal patch for the build/elf. I've started working on this.

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2 participants