diff options
Diffstat (limited to 'app-benchmarks/i7z/files/fix_cpuid_asm.patch')
| -rw-r--r-- | app-benchmarks/i7z/files/fix_cpuid_asm.patch | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/app-benchmarks/i7z/files/fix_cpuid_asm.patch b/app-benchmarks/i7z/files/fix_cpuid_asm.patch new file mode 100644 index 000000000000..27739a64523e --- /dev/null +++ b/app-benchmarks/i7z/files/fix_cpuid_asm.patch @@ -0,0 +1,21 @@ +Author: Andreas Beckmann <anbe@debian.org> +Description: fix cpuid inline assembly + the old code zeroed the upper half of %rbx + +--- a/helper_functions.c ++++ b/helper_functions.c +@@ -101,13 +101,7 @@ static inline void cpuid (unsigned int i + unsigned int *ecx, unsigned int *edx) + { + unsigned int _eax = info, _ebx, _ecx, _edx; +- asm volatile ("mov %%ebx, %%edi;" // save ebx (for PIC) +- "cpuid;" +- "mov %%ebx, %%esi;" // pass to caller +- "mov %%edi, %%ebx;" // restore ebx +- :"+a" (_eax), "=S" (_ebx), "=c" (_ecx), "=d" (_edx) +- : /* inputs: eax is handled above */ +- :"edi" /* clobbers: we hit edi directly */); ++ asm volatile ("cpuid\n\t" : "+a" (_eax), "=b" (_ebx), "=c" (_ecx), "=d" (_edx) : : ); + if (eax) *eax = _eax; + if (ebx) *ebx = _ebx; + if (ecx) *ecx = _ecx; |