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Added register clobber warning to read_tsc.

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Ben Gras 2007-01-22 15:15:30 +00:00
parent 78fe72e198
commit d954a122f7
1 changed files with 1 additions and 0 deletions
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kernel/arch/i386/klib386.s
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@ -552,6 +552,7 @@ _level0:
!*===========================================================================* !*===========================================================================*
! PUBLIC void read_tsc(unsigned long *high, unsigned long *low); ! PUBLIC void read_tsc(unsigned long *high, unsigned long *low);
! Read the cycle counter of the CPU. Pentium and up. ! Read the cycle counter of the CPU. Pentium and up.
! This function clobbers edx and eax.
.align 16 .align 16
_read_tsc: _read_tsc:
.data1 0x0f ! this is the RDTSC instruction .data1 0x0f ! this is the RDTSC instruction