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

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This commit is contained in:
Andy Polyakov 2009-04-26 17:58:01 +00:00
parent e303f55fc7
commit 75d448dde4
1 changed files with 9 additions and 8 deletions
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17
crypto/rc4/asm/rc4-x86_64.pl
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@ -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