Handle push/pop %rbx in epi/prologue (this is Win64 SEH thing).

diff --git a/crypto/rc4/asm/rc4-x86_64.pl b/crypto/rc4/asm/rc4-x86_64.pl
index af2093643f40b3dc689f9eee5638e62dd74dfbd3..677be5fe25badfe44a315855a827c65d71543e72 100755 (executable)
--- a/crypto/rc4/asm/rc4-x86_64.pl
+++ b/crypto/rc4/asm/rc4-x86_64.pl
@@ -91,9 +91,9 @@ RC4:  or      $len,$len
        jne     .Lentry
        ret
 .Lentry:
+       push    %rbx
        push    %r12
        push    %r13
-       sub     \$8,%rsp
 .Lprologue:
 
        add     \$8,$dat
@@ -167,7 +167,6 @@ $code.=<<___;
        jz      .Lcloop1
        cmpl    \$0,260($dat)
        jnz     .Lcloop1
-       push    %rbx
        jmp     .Lcloop8
 .align 16
 .Lcloop8:
@@ -222,7 +221,6 @@ $code.=<<___;
 
        test    \$-8,$len
        jnz     .Lcloop8
-       pop     %rbx
        cmp     \$0,$len
        jne     .Lcloop1
        jmp     .Lexit
@@ -254,8 +252,9 @@ $code.=<<___;
        movl    $XX[0]#d,-8($dat)
        movl    $YY#d,-4($dat)
 
-       mov     8(%rsp),%r13
-       mov     16(%rsp),%r12
+       mov     (%rsp),%r13
+       mov     8(%rsp),%r12
+       mov     16(%rsp),%rbx
        add     \$24,%rsp
 .Lepilogue:
        ret
@@ -400,13 +399,15 @@ stream_se_handler:
        mov     152($context),%rax      # pull context->Rsp
 
        lea     .Lepilogue(%rip),%r10
-       cmp     %r10,%rbx               # context->Rip<prologue label
+       cmp     %r10,%rbx               # context->Rip>=epilogue label
        jae     .Lin_prologue
 
        lea     24(%rax),%rax
 
-       mov     -8(%rax),%r12
-       mov     -16(%rax),%r13
+       mov     -8(%rax),%rbx
+       mov     -16(%rax),%r12
+       mov     -24(%rax),%r13
+       mov     %rbx,144($context)      # restore context->Rbx
        mov     %r12,216($context)      # restore context->R12
        mov     %r13,224($context)      # restore context->R13