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Use mov and xchg instead of movl(q) and xchgl(q)

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Artyom Pavlov 2022-09-04 15:03:18 +00:00 • committed by Amanieu d'Antras
parent ef7ae083b7
commit 23ec6d7dd0
1 changed files with 4 additions and 4 deletions
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8
library/stdarch/crates/core_arch/src/x86/cpuid.rs
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@ -62,9 +62,9 @@ pub unsafe fn __cpuid_count(leaf: u32, sub_leaf: u32) -> CpuidResult {
#[cfg(target_arch = "x86")]
{
asm!(
"movl {0}, ebx",
"mov {0}, ebx",
"cpuid",
"xchgl {0}, ebx",
"xchg {0}, ebx",
out(reg) ebx,
inout("eax") leaf => eax,
inout("ecx") sub_leaf => ecx,
@ -75,9 +75,9 @@ pub unsafe fn __cpuid_count(leaf: u32, sub_leaf: u32) -> CpuidResult {
#[cfg(target_arch = "x86_64")]
{
asm!(
"movq {0:r}, rbx",
"mov {0:r}, rbx",
"cpuid",
"xchgq {0:r}, rbx",
"xchg {0:r}, rbx",
out(reg) ebx,
inout("eax") leaf => eax,
inout("ecx") sub_leaf => ecx,