Mercurial > sdl-ios-xcode
diff src/cpuinfo/SDL_cpuinfo.c @ 3420:935f36ec1844
Fixed bug #734
Save and restore the PIC register %ebx/%rbx using push/pop instead of %edi/%rdi
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 30 Oct 2009 04:45:01 +0000 |
| parents | 714a352c8869 |
| children | 7bc83a9e09fd |
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--- a/src/cpuinfo/SDL_cpuinfo.c Thu Oct 29 09:20:50 2009 +0000 +++ b/src/cpuinfo/SDL_cpuinfo.c Fri Oct 30 04:45:01 2009 +0000 @@ -153,7 +153,7 @@ /* *INDENT-OFF* */ #if defined(__GNUC__) && defined(i386) __asm__ ( -" movl %%ebx,%%edi\n" +" pushl %%ebx\n" " xorl %%eax,%%eax # Set up for CPUID instruction \n" " cpuid # Get and save vendor ID \n" " cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n" @@ -163,14 +163,14 @@ " cpuid # Get family/model/stepping/features\n" " movl %%edx,%0 \n" "1: \n" -" movl %%edi,%%ebx\n" +" popl %%ebx\n" : "=m" (features) : - : "%eax", "%ecx", "%edx", "%edi" + : "%eax", "%ecx", "%edx", "cc" ); #elif defined(__GNUC__) && defined(__x86_64__) __asm__ ( -" movq %%rbx,%%rdi\n" +" pushq %%rbx\n" " xorl %%eax,%%eax # Set up for CPUID instruction \n" " cpuid # Get and save vendor ID \n" " cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n" @@ -180,10 +180,10 @@ " cpuid # Get family/model/stepping/features\n" " movl %%edx,%0 \n" "1: \n" -" movq %%rdi,%%rbx\n" +" popq %%rbx\n" : "=m" (features) : - : "%rax", "%rbx", "%rcx", "%rdx", "%rdi" + : "%rax", "%rcx", "%rdx", "cc" ); #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) __asm { @@ -226,7 +226,7 @@ /* *INDENT-OFF* */ #if defined(__GNUC__) && defined(i386) __asm__ ( -" movl %%ebx,%%edi\n" +" pushl %%ebx\n" " movl $0x80000000,%%eax # Query for extended functions \n" " cpuid # Get extended function limit \n" " cmpl $0x80000001,%%eax \n" @@ -235,14 +235,14 @@ " cpuid # and get the information \n" " movl %%edx,%0 \n" "1: \n" -" movl %%edi,%%ebx\n" +" popl %%ebx\n" : "=m" (features) : - : "%eax", "%ecx", "%edx", "%edi" + : "%eax", "%ecx", "%edx", "cc" ); #elif defined(__GNUC__) && defined (__x86_64__) __asm__ ( -" movq %%rbx,%%rdi\n" +" pushq %%rbx\n" " movl $0x80000000,%%eax # Query for extended functions \n" " cpuid # Get extended function limit \n" " cmpl $0x80000001,%%eax \n" @@ -251,10 +251,10 @@ " cpuid # and get the information \n" " movl %%edx,%0 \n" "1: \n" -" movq %%rdi,%%rbx\n" +" popq %%rbx\n" : "=m" (features) : - : "%rax", "%rbx", "%rcx", "%rdx", "%rdi" + : "%rax", "%rcx", "%rdx", "cc" ); #elif (defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__) __asm {