diff options
Diffstat (limited to 'sysdeps/x86/cpu-features.c')
| -rw-r--r-- | sysdeps/x86/cpu-features.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c index 81a170a819..bfb415f05a 100644 --- a/sysdeps/x86/cpu-features.c +++ b/sysdeps/x86/cpu-features.c @@ -466,6 +466,60 @@ init_cpu_features (struct cpu_features *cpu_features) } } } + /* This spells out "CentaurHauls" or " Shanghai ". */ + else if ((ebx == 0x746e6543 && ecx == 0x736c7561 && edx == 0x48727561) + || (ebx == 0x68532020 && ecx == 0x20206961 && edx == 0x68676e61)) + { + unsigned int extended_model, stepping; + + kind = arch_kind_zhaoxin; + + get_common_indices (cpu_features, &family, &model, &extended_model, + &stepping); + + get_extended_indices (cpu_features); + + model += extended_model; + if (family == 0x6) + { + if (model == 0xf || model == 0x19) + { + cpu_features->feature[index_arch_AVX_Usable] + &= (~bit_arch_AVX_Usable + & ~bit_arch_AVX2_Usable); + + cpu_features->feature[index_arch_Slow_SSE4_2] + |= (bit_arch_Slow_SSE4_2); + + cpu_features->feature[index_arch_AVX_Fast_Unaligned_Load] + &= ~bit_arch_AVX_Fast_Unaligned_Load; + } + } + else if (family == 0x7) + { + if (model == 0x1b) + { + cpu_features->feature[index_arch_AVX_Usable] + &= (~bit_arch_AVX_Usable + & ~bit_arch_AVX2_Usable); + + cpu_features->feature[index_arch_Slow_SSE4_2] + |= bit_arch_Slow_SSE4_2; + + cpu_features->feature[index_arch_AVX_Fast_Unaligned_Load] + &= ~bit_arch_AVX_Fast_Unaligned_Load; + } + else if (model == 0x3b) + { + cpu_features->feature[index_arch_AVX_Usable] + &= (~bit_arch_AVX_Usable + & ~bit_arch_AVX2_Usable); + + cpu_features->feature[index_arch_AVX_Fast_Unaligned_Load] + &= ~bit_arch_AVX_Fast_Unaligned_Load; + } + } + } else { kind = arch_kind_other; |