diff options
| -rw-r--r-- | volk/gen/make_cpuid_c.py | 7 | ||||
| -rw-r--r-- | volk/lib/gcc_x86_cpuid.h | 2 |
2 files changed, 8 insertions, 1 deletions
diff --git a/volk/gen/make_cpuid_c.py b/volk/gen/make_cpuid_c.py index 4bd1ce5b1..c6bb5059e 100644 --- a/volk/gen/make_cpuid_c.py +++ b/volk/gen/make_cpuid_c.py @@ -73,6 +73,13 @@ static inline unsigned int cpuid_edx(unsigned int op) { cpuid_x86 (op, regs); return regs[3]; } + +static inline unsigned int xgetbv(void) { + //check to make sure that xgetbv is enabled in OS + int xgetbv_enabled = cpuid_ecx(1) >> 27 & 0x01; + if(xgetbv_enabled == 0) return 0; + return __xgetbv(); +} #endif """ diff --git a/volk/lib/gcc_x86_cpuid.h b/volk/lib/gcc_x86_cpuid.h index 95a6722f2..2345ed213 100644 --- a/volk/lib/gcc_x86_cpuid.h +++ b/volk/lib/gcc_x86_cpuid.h @@ -182,7 +182,7 @@ __get_cpuid (unsigned int __level, * check for AVX capability before executing. */ static __inline unsigned int -xgetbv(void) +__xgetbv(void) { unsigned int index, __eax, __edx; __asm__ ("xgetbv" : "=a"(__eax), "=d"(__edx) : "c" (index)); |