4e67e08efd
This switches from a custom list of architectures to use the target-lexicon crate. - "set is_64bit=1; isa x86" is replaced with "target x86_64", and similar for other architectures, and the `is_64bit` flag is removed entirely. - The `is_compressed` flag is removed too; it's no longer being used to control REX prefixes on x86-64, ARM and Thumb are separate architectures in target-lexicon, and we can figure out how to select RISC-V compressed encodings when we're ready.
36 lines
1.2 KiB
Rust
36 lines
1.2 KiB
Rust
//! Utilities for working with Faerie container formats.
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use cretonne_codegen::binemit::Reloc;
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use target_lexicon::BinaryFormat;
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/// An object file format.
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#[derive(Copy, Clone, Debug, Eq, PartialEq)]
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pub enum Format {
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/// The ELF object file format.
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ELF,
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/// The Mach-O object file format.
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MachO,
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}
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/// Translate from a Cretonne `Reloc` to a raw object-file-format-specific
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/// relocation code.
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pub fn raw_relocation(reloc: Reloc, format: BinaryFormat) -> u32 {
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match format {
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BinaryFormat::Elf => {
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use goblin::elf;
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match reloc {
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Reloc::Abs4 => elf::reloc::R_X86_64_32,
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Reloc::Abs8 => elf::reloc::R_X86_64_64,
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Reloc::X86PCRel4 => elf::reloc::R_X86_64_PC32,
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// TODO: Get Cretonne to tell us when we can use
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// R_X86_64_GOTPCRELX/R_X86_64_REX_GOTPCRELX.
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Reloc::X86GOTPCRel4 => elf::reloc::R_X86_64_GOTPCREL,
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Reloc::X86PLTRel4 => elf::reloc::R_X86_64_PLT32,
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_ => unimplemented!(),
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}
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}
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BinaryFormat::Macho => unimplemented!("macho relocations"),
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_ => unimplemented!("unsupported format"),
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}
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}
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