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x86_64: add missing caller preserved regs

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All allocatable registers have to be either callee preserved or caller
preserved.
This commit is contained in:
Jacob Young
2023-09-25 01:35:44 -04:00
parent 8470652f10
commit c3042cbe12
1 changed files with 2 additions and 2 deletions
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4
src/arch/x86_64/abi.zig
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@@ -444,7 +444,7 @@ pub const SysV = struct {
/// These registers need to be preserved (saved on the stack) and restored by the caller before
/// the caller relinquishes control to a subroutine via call instruction (or similar).
/// In other words, these registers are free to use by the callee.
pub const caller_preserved_regs = [_]Register{ .rax, .rcx, .rdx, .rsi, .rdi, .r8, .r9, .r10, .r11 };
pub const caller_preserved_regs = [_]Register{ .rax, .rcx, .rdx, .rsi, .rdi, .r8, .r9, .r10, .r11 } ++ sse_avx_regs;
pub const c_abi_int_param_regs = [_]Register{ .rdi, .rsi, .rdx, .rcx, .r8, .r9 };
pub const c_abi_int_return_regs = [_]Register{ .rax, .rdx };
@@ -457,7 +457,7 @@ pub const Win64 = struct {
/// These registers need to be preserved (saved on the stack) and restored by the caller before
/// the caller relinquishes control to a subroutine via call instruction (or similar).
/// In other words, these registers are free to use by the callee.
pub const caller_preserved_regs = [_]Register{ .rax, .rcx, .rdx, .r8, .r9, .r10, .r11 };
pub const caller_preserved_regs = [_]Register{ .rax, .rcx, .rdx, .r8, .r9, .r10, .r11 } ++ sse_avx_regs;
pub const c_abi_int_param_regs = [_]Register{ .rcx, .rdx, .r8, .r9 };
pub const c_abi_int_return_regs = [_]Register{.rax};