diff options
Diffstat (limited to 'crypto/x86cpuid.pl')
| -rw-r--r-- | crypto/x86cpuid.pl | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl index e95f6274f5..90ed196c09 100644 --- a/crypto/x86cpuid.pl +++ b/crypto/x86cpuid.pl @@ -20,10 +20,10 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } &pop ("eax"); &xor ("ecx","eax"); &xor ("eax","eax"); + &mov ("esi",&wparam(0)); + &mov (&DWP(8,"esi"),"eax"); # clear extended feature flags &bt ("ecx",21); &jnc (&label("nocpuid")); - &mov ("esi",&wparam(0)); - &mov (&DWP(8,"esi"),"eax"); # clear 3rd word &cpuid (); &mov ("edi","eax"); # max value for standard query level @@ -81,26 +81,16 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } &jmp (&label("generic")); &set_label("intel"); - &cmp ("edi",7); - &jb (&label("cacheinfo")); - - &mov ("esi",&wparam(0)); - &mov ("eax",7); - &xor ("ecx","ecx"); - &cpuid (); - &mov (&DWP(8,"esi"),"ebx"); - -&set_label("cacheinfo"); &cmp ("edi",4); - &mov ("edi",-1); + &mov ("esi",-1); &jb (&label("nocacheinfo")); &mov ("eax",4); &mov ("ecx",0); # query L1D &cpuid (); - &mov ("edi","eax"); - &shr ("edi",14); - &and ("edi",0xfff); # number of cores -1 per L1D + &mov ("esi","eax"); + &shr ("esi",14); + &and ("esi",0xfff); # number of cores -1 per L1D &set_label("nocacheinfo"); &mov ("eax",1); @@ -118,7 +108,7 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } &bt ("edx",28); # test hyper-threading bit &jnc (&label("generic")); &and ("edx",0xefffffff); - &cmp ("edi",0); + &cmp ("esi",0); &je (&label("generic")); &or ("edx",0x10000000); @@ -130,10 +120,19 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } &set_label("generic"); &and ("ebp",1<<11); # isolate AMD XOP flag &and ("ecx",0xfffff7ff); # force 11th bit to 0 - &mov ("esi","edx"); + &mov ("esi","edx"); # %ebp:%esi is copy of %ecx:%edx &or ("ebp","ecx"); # merge AMD XOP flag - &bt ("ecx",27); # check OSXSAVE bit + &cmp ("edi",7); + &mov ("edi",&wparam(0)); + &jb (&label("no_extended_info")); + &mov ("eax",7); + &xor ("ecx","ecx"); + &cpuid (); + &mov (&DWP(8,"edi"),"ebx"); # save extended feature flag +&set_label("no_extended_info"); + + &bt ("ebp",27); # check OSXSAVE bit &jnc (&label("clear_avx")); &xor ("ecx","ecx"); &data_byte(0x0f,0x01,0xd0); # xgetbv @@ -147,7 +146,6 @@ for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); } &and ("esi",0xfeffffff); # clear FXSR &set_label("clear_avx"); &and ("ebp",0xefffe7ff); # clear AVX, FMA and AMD XOP bits - &mov ("edi",&wparam(0)); &and (&DWP(8,"edi"),0xffffffdf); # clear AVX2 &set_label("done"); &mov ("eax","esi"); |