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cranelift: Add COFF TLS Support (#4546)

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* cranelift: Implement COFF TLS Relocations

* cranelift: Emit SecRel relocations

* cranelift: Handle _tls_index symbol in backend
This commit is contained in:
Afonso Bordado
2022-08-11 17:33:40 +01:00
committed by GitHub
parent a40b253792
commit c5bc368cfe
10 changed files with 153 additions and 29 deletions
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40
cranelift/codegen/src/isa/x64/lower.rs
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@@ -2222,28 +2222,30 @@ fn lower_insn_to_regs<C: LowerCtx<I = Inst>>(
ctx.emit(Inst::gen_move(dst_hi, src.regs()[1], types::I64));
}
Opcode::TlsValue => match flags.tls_model() {
TlsModel::ElfGd => {
let dst = get_output_reg(ctx, outputs[0]).only_reg().unwrap();
let (name, _, _) = ctx.symbol_value(insn).unwrap();
let symbol = name.clone();
ctx.emit(Inst::ElfTlsGetAddr { symbol });
ctx.emit(Inst::gen_move(dst, regs::rax(), types::I64));
}
TlsModel::Macho => {
let dst = get_output_reg(ctx, outputs[0]).only_reg().unwrap();
let (name, _, _) = ctx.symbol_value(insn).unwrap();
let symbol = name.clone();
ctx.emit(Inst::MachOTlsGetAddr { symbol });
ctx.emit(Inst::gen_move(dst, regs::rax(), types::I64));
}
_ => {
todo!(
Opcode::TlsValue => {
let dst = get_output_reg(ctx, outputs[0]).only_reg().unwrap();
let (name, _, _) = ctx.symbol_value(insn).unwrap();
let symbol = name.clone();
match flags.tls_model() {
TlsModel::ElfGd => {
ctx.emit(Inst::ElfTlsGetAddr { symbol });
ctx.emit(Inst::gen_move(dst, regs::rax(), types::I64));
}
TlsModel::Macho => {
ctx.emit(Inst::MachOTlsGetAddr { symbol });
ctx.emit(Inst::gen_move(dst, regs::rax(), types::I64));
}
TlsModel::Coff => {
ctx.emit(Inst::CoffTlsGetAddr { symbol });
ctx.emit(Inst::gen_move(dst, regs::rax(), types::I64));
}
_ => todo!(
"Unimplemented TLS model in x64 backend: {:?}",
flags.tls_model()
);
),
}
},
}
Opcode::SqmulRoundSat => {
// Lane-wise saturating rounding multiplication in Q15 format