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Refs #187. Use binary code for xgetbv, which is compatible with old compiler.

This commit is contained in:
Zhang Xianyi 2013-01-22 00:18:21 +08:00
parent 4db6660de4
commit 8cdb795438
2 changed files with 4 additions and 2 deletions
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3
cpuid_x86.c
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@ -116,8 +116,9 @@ static inline int have_excpuid(void){
#ifndef NO_AVX
static inline void xgetbv(int op, int * eax, int * edx){
//Use binary code for xgetbv
__asm__ __volatile__
("xgetbv": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
(".byte 0x0f, 0x01, 0xd0": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
}
#endif

3
driver/others/dynamic.c
View File

@ -78,8 +78,9 @@ extern gotoblas_t gotoblas_SANDYBRIDGE;
#ifndef NO_AVX
static inline void xgetbv(int op, int * eax, int * edx){
//Use binary code for xgetbv
__asm__ __volatile__
("xgetbv": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
(".byte 0x0f, 0x01, 0xd0": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
}
#endif