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Intrin.h: implement __rdtsc and __halt 

llvm-svn: 200343
This commit is contained in:
Hans Wennborg 2014-01-28 22:55:01 +00:00
parent f40ef45c9d
commit 740a4d6e46
1 changed files with 12 additions and 0 deletions
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12
clang/lib/Headers/Intrin.h
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@ -56,6 +56,7 @@ __int64 __emul(int, int);
unsigned __int64 __emulu(unsigned int, unsigned int);
void __cdecl __fastfail(unsigned int);
unsigned int __getcallerseflags(void);
static __inline__
void __halt(void);
unsigned char __inbyte(unsigned short);
void __inbytestring(unsigned short, unsigned char *, unsigned long);
@ -92,6 +93,7 @@ static __inline__
unsigned int __popcnt(unsigned int);
static __inline__
unsigned short __popcnt16(unsigned short);
static __inline__
unsigned __int64 __rdtsc(void);
unsigned __int64 __rdtscp(unsigned int *);
unsigned long __readcr0(void);
@ -889,6 +891,16 @@ _xgetbv(unsigned int __xcr_no) {
__asm__ ("xgetbv" : "=a" (__eax), "=d" (__edx) : "c" (__xcr_no));
return ((unsigned __int64)__edx << 32) | __eax;
}
static __inline__ unsigned __int64 __attribute__((__always_inline__, __nodebug__))
__rdtsc(void) {
unsigned int __eax, __edx;
__asm__ ("rdtsc" : "=a" (__eax), "=d" (__edx));
return ((unsigned __int64)__edx << 32) | __eax;
}
static __inline__ void __attribute__((__always_inline__, __nodebug__))
__halt(void) {
__asm__ volatile ("hlt");
}
#ifdef __cplusplus
}