diff options
Diffstat (limited to 'crypto/x86_64cpuid.pl')
| -rw-r--r-- | crypto/x86_64cpuid.pl | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/crypto/x86_64cpuid.pl b/crypto/x86_64cpuid.pl index d208d02392e9..a3d6f438f91e 100644 --- a/crypto/x86_64cpuid.pl +++ b/crypto/x86_64cpuid.pl @@ -59,7 +59,7 @@ OPENSSL_ia32_cpuid: mov %rbx,%r8 # save %rbx xor %eax,%eax - mov %eax,8(%rdi) # clear 3rd word + mov %eax,8(%rdi) # clear extended feature flags cpuid mov %eax,%r11d # max value for standard query level @@ -127,14 +127,6 @@ OPENSSL_ia32_cpuid: shr \$14,%r10d and \$0xfff,%r10d # number of cores -1 per L1D - cmp \$7,%r11d - jb .Lnocacheinfo - - mov \$7,%eax - xor %ecx,%ecx - cpuid - mov %ebx,8(%rdi) - .Lnocacheinfo: mov \$1,%eax cpuid @@ -164,6 +156,15 @@ OPENSSL_ia32_cpuid: or %ecx,%r9d # merge AMD XOP flag mov %edx,%r10d # %r9d:%r10d is copy of %ecx:%edx + + cmp \$7,%r11d + jb .Lno_extended_info + mov \$7,%eax + xor %ecx,%ecx + cpuid + mov %ebx,8(%rdi) # save extended feature flags +.Lno_extended_info: + bt \$27,%r9d # check OSXSAVE bit jnc .Lclear_avx xor %ecx,%ecx # XCR0 |