diff options
Diffstat (limited to 'unix/tclUnixCompat.c')
| -rw-r--r-- | unix/tclUnixCompat.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/unix/tclUnixCompat.c b/unix/tclUnixCompat.c index e201018..2a68f7f 100644 --- a/unix/tclUnixCompat.c +++ b/unix/tclUnixCompat.c @@ -995,12 +995,19 @@ TclWinCPUID( /* See: <http://en.wikipedia.org/wiki/CPUID> */ #if defined(HAVE_CPUID) - __asm__ __volatile__("mov %%ebx, %%edi \n\t" /* save %ebx */ +#if defined(__x86_64__) || defined(_M_AMD64) || defined (_M_X64) + __asm__ __volatile__("movq %%rbx, %%rsi \n\t" /* save %rbx */ "cpuid \n\t" - "mov %%ebx, %%esi \n\t" /* save what cpuid just put in %ebx */ - "mov %%edi, %%ebx \n\t" /* restore the old %ebx */ + "xchgq %%rsi, %%rbx \n\t" /* restore the old %rbx */ : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3]) - : "a"(index) : "edi"); + : "a"(index)); +#else + __asm__ __volatile__("mov %%ebx, %%esi \n\t" /* save %ebx */ + "cpuid \n\t" + "xchg %%esi, %%ebx \n\t" /* restore the old %ebx */ + : "=a"(regsPtr[0]), "=S"(regsPtr[1]), "=c"(regsPtr[2]), "=d"(regsPtr[3]) + : "a"(index)); +#endif status = TCL_OK; #endif return status; |