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GOT-relative lookups in RC4 code.

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This commit is contained in:
Adam Langley 2014-06-20 12:00:00 -07:00
parent b2ce05839b
commit 520ed0446c
1 changed files with 6 additions and 3 deletions
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9
crypto/rc4/asm/rc4-x86_64.pl
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@ -158,7 +158,8 @@ $code.=<<___;
mov -4($dat),$YY#b
cmpl \$-1,256($dat)
je .LRC4_CHAR
mov OPENSSL_ia32cap_P(%rip),%r8d
mov OPENSSL_ia32cap_P\@GOTPCREL(%rip),%r8
mov (%r8),%r8d
xor $TX[1],$TX[1]
inc $XX[0]#b
sub $XX[0],$TX[1]
@ -443,7 +444,8 @@ RC4_set_key:
xor %r10,%r10
xor %r11,%r11
mov OPENSSL_ia32cap_P(%rip),$idx#d
mov OPENSSL_ia32cap_P\@GOTPCREL(%rip),$idx
mov ($idx),$idx#d
bt \$20,$idx#d # RC4_CHAR?
jc .Lc1stloop
jmp .Lw1stloop
@ -507,7 +509,8 @@ RC4_set_key:
.align 16
RC4_options:
lea .Lopts(%rip),%rax
mov OPENSSL_ia32cap_P(%rip),%edx
mov OPENSSL_ia32cap_P(%rip),%rdx
mov (%rdx),%edx
bt \$20,%edx
jc .L8xchar
bt \$30,%edx