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Minor optimization in AES_set_encryption_key for x86_64.

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This commit is contained in:
Andy Polyakov 2007-07-19 14:59:26 +00:00
parent 8bae7722a2
commit e59f992be6
1 changed files with 22 additions and 37 deletions
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59
crypto/aes/asm/aes-x86_64.pl
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@ -1313,15 +1313,12 @@ AES_set_encrypt_key:
jmp .Lexit
.L10rounds:
mov 0(%rsi),%eax # copy first 4 dwords
mov 4(%rsi),%ebx
mov 8(%rsi),%ecx
mov 12(%rsi),%edx
mov %eax,0(%rdi)
mov %ebx,4(%rdi)
mov %ecx,8(%rdi)
mov %edx,12(%rdi)
mov 0(%rsi),%rax # copy first 4 dwords
mov 8(%rsi),%rdx
mov %rax,0(%rdi)
mov %rdx,8(%rdi)
shr \$32,%rdx
xor %ecx,%ecx
jmp .L10shortcut
.align 4
@ -1349,19 +1346,14 @@ $code.=<<___;
jmp .Lexit
.L12rounds:
mov 0(%rsi),%eax # copy first 6 dwords
mov 4(%rsi),%ebx
mov 8(%rsi),%ecx
mov 12(%rsi),%edx
mov %eax,0(%rdi)
mov %ebx,4(%rdi)
mov %ecx,8(%rdi)
mov %edx,12(%rdi)
mov 16(%rsi),%ecx
mov 20(%rsi),%edx
mov %ecx,16(%rdi)
mov %edx,20(%rdi)
mov 0(%rsi),%rax # copy first 6 dwords
mov 8(%rsi),%rbx
mov 16(%rsi),%rdx
mov %rax,0(%rdi)
mov %rbx,8(%rdi)
mov %rdx,16(%rdi)
shr \$32,%rdx
xor %ecx,%ecx
jmp .L12shortcut
.align 4
@ -1397,30 +1389,23 @@ $code.=<<___;
jmp .Lexit
.L14rounds:
mov 0(%rsi),%eax # copy first 8 dwords
mov 4(%rsi),%ebx
mov 8(%rsi),%ecx
mov 12(%rsi),%edx
mov %eax,0(%rdi)
mov %ebx,4(%rdi)
mov %ecx,8(%rdi)
mov %edx,12(%rdi)
mov 16(%rsi),%eax
mov 20(%rsi),%ebx
mov 24(%rsi),%ecx
mov 28(%rsi),%edx
mov %eax,16(%rdi)
mov %ebx,20(%rdi)
mov %ecx,24(%rdi)
mov %edx,28(%rdi)
mov 0(%rsi),%rax # copy first 8 dwords
mov 8(%rsi),%rbx
mov 16(%rsi),%rcx
mov 24(%rsi),%rdx
mov %rax,0(%rdi)
mov %rbx,8(%rdi)
mov %rcx,16(%rdi)
mov %rdx,24(%rdi)
shr \$32,%rdx
xor %ecx,%ecx
jmp .L14shortcut
.align 4
.L14loop:
mov 0(%rdi),%eax # rk[0]
mov 28(%rdi),%edx # rk[4]
.L14shortcut:
mov 0(%rdi),%eax # rk[0]
___
&enckey ();
$code.=<<___;