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The simple form of "cpuid" should work on 64-bit platforms; on 32-bit platforms it is safer to use the version that does not modify EBX. 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@297 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Maarten ter Huurne 2008-08-24 20:13:49 +00:00
parent 7151ec6f4f
commit 1b1f0ecae9
1 changed files with 8 additions and 9 deletions
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7
Source/Core/Common/Src/CPUDetect.cpp
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@ -23,19 +23,18 @@
//#include <config/i386/cpuid.h> //#include <config/i386/cpuid.h>
#include <xmmintrin.h> #include <xmmintrin.h>
// if you are on linux and this doesn't build, plz fix :)
static inline void do_cpuid(unsigned int *eax, unsigned int *ebx, static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
unsigned int *ecx, unsigned int *edx) unsigned int *ecx, unsigned int *edx)
{ {
#ifdef __linux__ #ifdef _LP64
__asm__("cpuid" __asm__("cpuid"
: "=a" (*eax), : "=a" (*eax),
"=b" (*ebx), "=b" (*ebx),
"=c" (*ecx), "=c" (*ecx),
"=d" (*edx)); "=d" (*edx));
#else #else
// Note: EBX is reserved on Mac OS X, so it has to be restored at the end // Note: EBX is reserved on Mac OS X and in PIC on Linux, so it has to be
// of the asm block. // restored at the end of the asm block.
__asm__( __asm__(
"pushl %%ebx;" "pushl %%ebx;"
"cpuid;" "cpuid;"