348a1ba589
Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5236 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
30 lines
491 B
C
30 lines
491 B
C
#ifndef CPU_X86_TSC_H
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#define CPU_X86_TSC_H
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struct tsc_struct {
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unsigned lo;
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unsigned hi;
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};
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typedef struct tsc_struct tsc_t;
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static inline tsc_t rdtsc(void)
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{
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tsc_t res;
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__asm__ __volatile__ (
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"rdtsc"
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: "=a" (res.lo), "=d"(res.hi) /* outputs */
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);
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return res;
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}
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#if !defined( __ROMCC__ ) && !defined (__PRE_RAM__)
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static inline unsigned long long rdtscll(void)
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{
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unsigned long long val;
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asm volatile ("rdtsc" : "=A" (val));
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return val;
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}
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#endif
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#endif /* CPU_X86_TSC_H */
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