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*------------------------------------------------------------------------
*
* TclWinCPUID --
*
* Get CPU ID information on an Intel box under UNIX (either Linux or Cygwin)
*
* Results:
* Returns TCL_OK if successful, TCL_ERROR if CPUID is not supported or
* fails.
*
* Side effects:
* If successful, stores EAX, EBX, ECX and EDX registers after the CPUID
* instruction in the four integers designated by 'regsPtr'
*
*----------------------------------------------------------------------
*/
int
TclWinCPUID(
unsigned int index, /* Which CPUID value to retrieve. */
unsigned int *regsPtr) /* Registers after the CPUID. */
{
int status = TCL_ERROR;
#if defined(HAVE_CPUID) && defined(__CYGWIN__)
__asm__ __volatile__("pushl %%ebx \n\t" /* save %ebx */
"cpuid \n\t"
"movl %%ebx, %1 \n\t" /* save what cpuid just put in %ebx */
"popl %%ebx \n\t" /* restore the old %ebx */
: "=a"(regsPtr[0]), "=r"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3])
: "a"(index)
: "cc");
status = TCL_OK;
#endif
return status;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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*------------------------------------------------------------------------
*
* TclWinCPUID --
*
* Get CPU ID information on an Intel box under UNIX (either Linux or Cygwin)
*
* Results:
* Returns TCL_OK if successful, TCL_ERROR if CPUID is not supported.
*
* Side effects:
* If successful, stores EAX, EBX, ECX and EDX registers after the CPUID
* instruction in the four integers designated by 'regsPtr'
*
*----------------------------------------------------------------------
*/
int
TclWinCPUID(
unsigned int index, /* Which CPUID value to retrieve. */
unsigned int *regsPtr) /* Registers after the CPUID. */
{
int status = TCL_ERROR;
/* See: <http://en.wikipedia.org/wiki/CPUID> */
#if defined(HAVE_CPUID)
__asm__ __volatile__("mov %%ebx, %%edi \n\t" /* save %ebx */
"cpuid \n\t"
"mov %%ebx, %%esi \n\t" /* save what cpuid just put in %ebx */
"mov %%edi, %%ebx \n\t" /* restore the old %ebx */
: "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3])
: "a"(index));
status = TCL_OK;
#endif
return status;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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