From 32ac0b988466785d6e3cc1dffc364bb26fc63193 Mon Sep 17 00:00:00 2001 From: mayshao Date: Fri, 24 Apr 2020 12:55:38 +0800 Subject: x86: Add CPU Vendor ID detection support for Zhaoxin processors To recognize Zhaoxin CPU Vendor ID, add a new architecture type arch_kind_zhaoxin for Vendor Zhaoxin detection. --- sysdeps/x86/cpu-features.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++ sysdeps/x86/cpu-features.h | 1 + 2 files changed, 55 insertions(+) (limited to 'sysdeps/x86') 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; diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h index aea83e6e31..f05d5ce158 100644 --- a/sysdeps/x86/cpu-features.h +++ b/sysdeps/x86/cpu-features.h @@ -53,6 +53,7 @@ enum cpu_features_kind arch_kind_unknown = 0, arch_kind_intel, arch_kind_amd, + arch_kind_zhaoxin, arch_kind_other }; -- cgit 1.4.1