31,6 → 31,8 |
#include <ll/i386/defs.h> |
BEGIN_DEF |
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#include <ll/sys/ll/time.h> |
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/* TSC */ |
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#define rdtsc(low,high) \ |
57,6 → 59,54 |
: "=A" (val) \ |
:: "ebx","ecx") |
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//Low level time read function |
extern __inline__ void ll_read_timespec(struct timespec *tspec) |
{ |
extern unsigned int clk_per_msec; |
extern unsigned long long *ptr_init_nsec; |
extern unsigned long long *ptr_init_tsc; |
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if (clk_per_msec == 0) { |
NULL_TIMESPEC(tspec); |
return; |
} |
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__asm__("xorl %%eax,%%eax\n\t" |
"cpuid\n\t" |
"rdtsc\n\t" |
"pushl %%eax\n\t" |
"pushl %%edx\n\t" |
"xorl %%eax,%%eax\n\t" |
"cpuid\n\t" |
"popl %%edx\n\t" |
"popl %%eax\n\t" |
"movl %4,%%ebx\n\t" |
"subl (%%edi),%%eax\n\t" |
"sbbl 4(%%edi),%%edx\n\t" |
"movl %%edx,%%ecx\n\t" |
"movl $1000000,%%edi\n\t" |
"mull %%edi\n\t" |
"pushl %%eax\n\t" |
"movl %%ecx,%%eax\n\t" |
"movl %%edx,%%ecx\n\t" |
"mull %%edi\n\t" |
"addl %%ecx,%%eax\n\t" |
"adcl $0,%%edx\n\t" |
"divl %%ebx\n\t" |
"movl %%eax,%%ecx\n\t" |
"popl %%eax\n\t" |
"divl %%ebx\n\t" |
"movl %%ecx,%%edx\n\t" |
"addl (%%esi),%%eax\n\t" |
"adcl 4(%%esi),%%edx\n\t" |
"movl $1000000000,%%edi\n\t" |
"divl %%edi\n\t" |
: "=a" (tspec->tv_sec), "=d" (tspec->tv_nsec) |
: "D" (ptr_init_tsc), "S" (ptr_init_nsec), "m" (clk_per_msec) |
: "ebx", "ecx"); |
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} |
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#define rdmsr(msr,val1,val2) \ |
__asm__ __volatile__("rdmsr" \ |
: "=a" (val1), "=d" (val2) \ |