aes-x86_64.pl: remove redundant instructions.
authorAndy Polyakov <appro@openssl.org>
Mon, 26 Jul 2010 21:48:39 +0000 (21:48 +0000)
committerAndy Polyakov <appro@openssl.org>
Mon, 26 Jul 2010 21:48:39 +0000 (21:48 +0000)
crypto/aes/asm/aes-x86_64.pl

index a545e89..f2f62cd 100755 (executable)
@@ -1295,10 +1295,6 @@ AES_set_encrypt_key:
 
        call    _x86_64_AES_set_encrypt_key
 
-       mov     8(%rsp),%r15
-       mov     16(%rsp),%r14
-       mov     24(%rsp),%r13
-       mov     32(%rsp),%r12
        mov     40(%rsp),%rbp
        mov     48(%rsp),%rbx
        add     \$56,%rsp
@@ -1556,8 +1552,8 @@ $code.=<<___;
 AES_set_decrypt_key:
        push    %rbx
        push    %rbp
-       push    %r12
-       push    %r13
+       push    %r12                    # redundant, but allows to share
+       push    %r13                    # exception handler...
        push    %r14
        push    %r15
        push    %rdx                    # save key schedule
@@ -1613,10 +1609,6 @@ $code.=<<___;
 
        xor     %rax,%rax
 .Labort:
-       mov     8(%rsp),%r15
-       mov     16(%rsp),%r14
-       mov     24(%rsp),%r13
-       mov     32(%rsp),%r12
        mov     40(%rsp),%rbp
        mov     48(%rsp),%rbx
        add     \$56,%rsp