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x86_64: seems like we will need to keep track of rax and reserve rax+rdi for TLS

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Jakub Konka 2023-11-12 11:08:27 +01:00 committed by Jacob Young
parent 0dab319e86
commit 412519dd49
1 changed files with 5 additions and 5 deletions
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10
src/arch/x86_64/Lower.zig
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@ -364,14 +364,14 @@ fn emit(lower: *Lower, prefix: Prefix, mnemonic: Mnemonic, ops: []const Operand)
_ = lower.reloc(.{ .linker_tlsld = sym });
lower.result_insts[lower.result_insts_len] =
try Instruction.new(.none, .lea, &[_]Operand{
.{ .reg = ops[0].reg.to64() },
.{ .reg = .rdi },
.{ .mem = Memory.rip(mem_op.sib.ptr_size, 0) },
});
lower.result_insts_len += 1;
if (lower.bin_file.cast(link.File.Elf)) |elf_file| {
_ = lower.reloc(.{ .linker_extern_fn = .{
.atom_index = sym.atom_index,
.sym_index = try elf_file.getGlobalSymbol("__tls_get_address", null),
.sym_index = try elf_file.getGlobalSymbol("__tls_get_addr", null),
} });
}
lower.result_insts[lower.result_insts_len] =
@ -386,8 +386,8 @@ fn emit(lower: *Lower, prefix: Prefix, mnemonic: Mnemonic, ops: []const Operand)
}
emit_mnemonic = .lea;
break :op .{ .mem = Memory.sib(mem_op.sib.ptr_size, .{
.base = .{ .reg = ops[0].reg.to64() },
.disp = undefined,
.base = .{ .reg = .rax },
.disp = std.math.minInt(i32),
}) };
} else {
// Since we are linking statically, we emit LE model directly.
@ -405,7 +405,7 @@ fn emit(lower: *Lower, prefix: Prefix, mnemonic: Mnemonic, ops: []const Operand)
emit_mnemonic = .lea;
break :op .{ .mem = Memory.sib(mem_op.sib.ptr_size, .{
.base = .{ .reg = ops[0].reg.to64() },
.disp = undefined,
.disp = std.math.minInt(i32),
}) };
}
}