Commit 75d448dd authored by Andy Polyakov's avatar Andy Polyakov
Browse files

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

parent e303f55f

crypto/rc4/asm/rc4-x86_64.pl

+9 −8
Original line number Diff line number Diff line
@@ -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