Mercurial > sdl-ios-xcode
diff src/cpuinfo/SDL_cpuinfo.c @ 3515:d94e331e85fa
Missing pop over a jump
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 03 Dec 2009 04:33:05 +0000 |
| parents | 4cf8a1423d57 |
| children | 3427271a2d75 |
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--- a/src/cpuinfo/SDL_cpuinfo.c Wed Dec 02 07:56:09 2009 +0000 +++ b/src/cpuinfo/SDL_cpuinfo.c Thu Dec 03 04:33:05 2009 +0000 @@ -156,10 +156,12 @@ " xorl %%eax,%%eax # Set up for CPUID instruction \n" " pushl %%ebx \n" " cpuid # Get and save vendor ID \n" +" popl %%ebx \n" " cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n" " jl 1f # We dont have the CPUID instruction\n" " xorl %%eax,%%eax \n" " incl %%eax \n" +" pushl %%ebx \n" " cpuid # Get family/model/stepping/features\n" " popl %%ebx \n" " movl %%edx,%0 \n" @@ -171,14 +173,16 @@ #elif defined(__GNUC__) && defined(__x86_64__) __asm__ ( " xorl %%eax,%%eax # Set up for CPUID instruction \n" -" pushq %%rbx\n" +" pushq %%rbx \n" " cpuid # Get and save vendor ID \n" +" popq %%rbx \n" " cmpl $1,%%eax # Make sure 1 is valid input for CPUID\n" " jl 1f # We dont have the CPUID instruction\n" " xorl %%eax,%%eax \n" " incl %%eax \n" +" pushq %%rbx \n" " cpuid # Get family/model/stepping/features\n" -" popq %%rbx\n" +" popq %%rbx \n" " movl %%edx,%0 \n" "1: \n" : "=m" (features) @@ -190,10 +194,12 @@ xor eax, eax ; Set up for CPUID instruction push ebx cpuid ; Get and save vendor ID + pop ebx cmp eax, 1 ; Make sure 1 is valid input for CPUID jl done ; We dont have the CPUID instruction xor eax, eax inc eax + push ebx cpuid ; Get family/model/stepping/features pop ebx mov features, edx @@ -204,10 +210,12 @@ " xorl %eax,%eax \n" " pushl %ebx \n" " cpuid \n" +" popl %ebx \n" " cmpl $1,%eax \n" " jl 1f \n" " xorl %eax,%eax \n" " incl %eax \n" +" pushl %ebx \n" " cpuid \n" " popl %ebx \n" #ifdef __i386 @@ -231,9 +239,11 @@ " movl $0x80000000,%%eax # Query for extended functions \n" " pushl %%ebx \n" " cpuid # Get extended function limit \n" +" popl %%ebx \n" " cmpl $0x80000001,%%eax \n" " jl 1f # Nope, we dont have function 800000001h\n" " movl $0x80000001,%%eax # Setup extended function 800000001h\n" +" pushl %%ebx \n" " cpuid # and get the information \n" " popl %%ebx \n" " movl %%edx,%0 \n" @@ -247,9 +257,11 @@ " movl $0x80000000,%%eax # Query for extended functions \n" " pushq %%rbx \n" " cpuid # Get extended function limit \n" +" popq %%rbx \n" " cmpl $0x80000001,%%eax \n" " jl 1f # Nope, we dont have function 800000001h\n" " movl $0x80000001,%%eax # Setup extended function 800000001h\n" +" pushq %%rbx \n" " cpuid # and get the information \n" " popq %%rbx \n" " movl %%edx,%0 \n" @@ -263,9 +275,11 @@ mov eax,80000000h ; Query for extended functions push ebx cpuid ; Get extended function limit + pop ebx cmp eax,80000001h jl done ; Nope, we dont have function 800000001h mov eax,80000001h ; Setup extended function 800000001h + push ebx cpuid ; and get the information pop ebx mov features,edx @@ -276,9 +290,11 @@ " movl $0x80000000,%eax \n" " pushl %ebx \n" " cpuid \n" +" popl %ebx \n" " cmpl $0x80000001,%eax \n" " jl 1f \n" " movl $0x80000001,%eax \n" +" pushl %ebx \n" " cpuid \n" " popl %ebx \n" #ifdef __i386