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(svn r26219) -Fix: cpuid code still didn't work right in some situations

This commit is contained in:
rubidium 2014-01-03 13:29:12 +00:00
parent a325c33578
commit e6fc55b07b
1 changed files with 4 additions and 13 deletions
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17
src/cpu.cpp
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@ -98,20 +98,11 @@ void ottd_cpuid(int info[4], int type)
{
/* The easy variant would be just cpuid, however... ebx gets clobbered by PIC. */
__asm__ __volatile__ (
#if defined(__x86_64__)
"pushq %%rbx \n\t" // save %rbx
#else
"pushl %%ebx \n\t" // save %ebx
#endif
"cpuid \n\t"
"movl %%ebx, %1 \n\t" // write the result into output var
#if defined(__x86_64__)
"popq %%rbx \n\t" // restore %rbx
#else
"popl %%ebx \n\t" // restore %ebc
#endif
"xchgl %%ebx, %1 \n\t"
"cpuid \n\t"
"xchgl %%ebx, %1 \n\t"
: "=a" (info[0]), "=r" (info[1]), "=c" (info[2]), "=d" (info[3])
: "a" (type)
: "0" (type)
);
}
#else