diff options
| author | Andy Polyakov <appro@openssl.org> | 2016-07-10 12:05:43 +0200 |
|---|---|---|
| committer | Andy Polyakov <appro@openssl.org> | 2016-07-15 13:20:52 +0200 |
| commit | 9c940446f614d1294fa197ffd4128206296b04da (patch) | |
| tree | d5fe003438949d0fbd62a18a8892fe023f2d082e /crypto/x86cpuid.pl | |
| parent | b1837abd674f62a04f1191c68ca7e5c3101ce5a0 (diff) | |
crypto/x86[_64]cpuid.pl: add OPENSSL_ia32_rd[rand|seed]_bytes.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Diffstat (limited to 'crypto/x86cpuid.pl')
| -rw-r--r-- | crypto/x86cpuid.pl | 53 |
1 files changed, 44 insertions, 9 deletions
diff --git a/crypto/x86cpuid.pl b/crypto/x86cpuid.pl index 99ffa1d2fb..c45b18356b 100644 --- a/crypto/x86cpuid.pl +++ b/crypto/x86cpuid.pl @@ -492,29 +492,64 @@ my $max = "ebp"; &function_end("OPENSSL_instrument_bus2"); } -&function_begin_B("OPENSSL_ia32_rdrand"); +sub gen_random { +my $rdop = shift; +&function_begin_B("OPENSSL_ia32_${rdop}"); &mov ("ecx",8); &set_label("loop"); - &rdrand ("eax"); + &${rdop}("eax"); &jc (&label("break")); &loop (&label("loop")); &set_label("break"); &cmp ("eax",0); &cmove ("eax","ecx"); &ret (); -&function_end_B("OPENSSL_ia32_rdrand"); +&function_end_B("OPENSSL_ia32_${rdop}"); + +&function_begin_B("OPENSSL_ia32_${rdop}_bytes"); + &push ("edi"); + &push ("ebx"); + &xor ("eax","eax"); # return value + &mov ("edi",&wparam(0)); + &mov ("ebx",&wparam(1)); + + &cmp ("ebx",0); + &je (&label("done")); -&function_begin_B("OPENSSL_ia32_rdseed"); &mov ("ecx",8); &set_label("loop"); - &rdseed ("eax"); + &${rdop}("edx"); &jc (&label("break")); &loop (&label("loop")); -&set_label("break"); - &cmp ("eax",0); - &cmove ("eax","ecx"); + &jmp (&label("done")); + +&set_label("break",16); + &cmp ("ebx",4); + &jb (&label("tail")); + &mov (&DWP(0,"edi"),"edx"); + &lea ("edi",&DWP(4,"edi")); + &add ("eax",4); + &sub ("ebx",4); + &jz (&label("done")); + &mov ("ecx",8); + &jmp (&label("loop")); + +&set_label("tail",16); + &mov (&BP(0,"edi"),"dl"); + &lea ("edi",&DWP(1,"edi")); + &inc ("eax"); + &shr ("edx",8); + &dec ("ebx"); + &jnz (&label("tail")); + +&set_label("done"); + &pop ("ebx"); + &pop ("edi"); &ret (); -&function_end_B("OPENSSL_ia32_rdseed"); +&function_end_B("OPENSSL_ia32_${rdop}_bytes"); +} +&gen_random("rdrand"); +&gen_random("rdseed"); &initseg("OPENSSL_cpuid_setup"); |