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/x86_64cpuid.pl | |
| parent | Small fixes in unix-Makefile.tmpl (diff) | |
| download | openssl-9c940446f614d1294fa197ffd4128206296b04da.tar.xz openssl-9c940446f614d1294fa197ffd4128206296b04da.zip | |
crypto/x86[_64]cpuid.pl: add OPENSSL_ia32_rd[rand|seed]_bytes.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Diffstat (limited to 'crypto/x86_64cpuid.pl')
| -rw-r--r-- | crypto/x86_64cpuid.pl | 73 |
1 files changed, 52 insertions, 21 deletions
diff --git a/crypto/x86_64cpuid.pl b/crypto/x86_64cpuid.pl index 285ad1ba7d..6cb152148b 100644 --- a/crypto/x86_64cpuid.pl +++ b/crypto/x86_64cpuid.pl @@ -393,36 +393,67 @@ OPENSSL_instrument_bus2: ___ } +sub gen_random { +my $rdop = shift; print<<___; -.globl OPENSSL_ia32_rdrand -.type OPENSSL_ia32_rdrand,\@abi-omnipotent +.globl OPENSSL_ia32_${rdop} +.type OPENSSL_ia32_${rdop},\@abi-omnipotent .align 16 -OPENSSL_ia32_rdrand: +OPENSSL_ia32_${rdop}: mov \$8,%ecx -.Loop_rdrand: - rdrand %rax - jc .Lbreak_rdrand - loop .Loop_rdrand -.Lbreak_rdrand: +.Loop_${rdop}: + ${rdop} %rax + jc .Lbreak_${rdop} + loop .Loop_${rdop} +.Lbreak_${rdop}: cmp \$0,%rax cmove %rcx,%rax ret -.size OPENSSL_ia32_rdrand,.-OPENSSL_ia32_rdrand +.size OPENSSL_ia32_${rdop},.-OPENSSL_ia32_${rdop} -.globl OPENSSL_ia32_rdseed -.type OPENSSL_ia32_rdseed,\@abi-omnipotent +.globl OPENSSL_ia32_${rdop}_bytes +.type OPENSSL_ia32_${rdop}_bytes,\@abi-omnipotent .align 16 -OPENSSL_ia32_rdseed: - mov \$8,%ecx -.Loop_rdseed: - rdseed %rax - jc .Lbreak_rdseed - loop .Loop_rdseed -.Lbreak_rdseed: - cmp \$0,%rax - cmove %rcx,%rax +OPENSSL_ia32_${rdop}_bytes: + xor %rax, %rax # return value + cmp \$0,$arg2 + je .Ldone_${rdop}_bytes + + mov \$8,%r11 +.Loop_${rdop}_bytes: + ${rdop} %r10 + jc .Lbreak_${rdop}_bytes + dec %r11 + jnz .Loop_${rdop}_bytes + jmp .Ldone_${rdop}_bytes + +.align 16 +.Lbreak_${rdop}_bytes: + cmp \$8,$arg2 + jb .Ltail_${rdop}_bytes + mov %r10,($arg1) + lea 8($arg1),$arg1 + add \$8,%rax + sub \$8,$arg2 + jz .Ldone_${rdop}_bytes + mov \$8,%r11 + jmp .Loop_${rdop}_bytes + +.align 16 +.Ltail_${rdop}_bytes: + mov %r10b,($arg1) + lea 1($arg1),$arg1 + inc %rax + shr \$8,%r8 + dec $arg2 + jnz .Ltail_${rdop}_bytes + +.Ldone_${rdop}_bytes: ret -.size OPENSSL_ia32_rdseed,.-OPENSSL_ia32_rdseed +.size OPENSSL_ia32_${rdop}_bytes,.-OPENSSL_ia32_${rdop}_bytes ___ +} +gen_random("rdrand"); +gen_random("rdseed"); close STDOUT; # flush |