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openssl/crypto/sha/asm/sha1-x86_64.pl

Index: openssl/crypto/sha/asm/sha1-x86_64.pl
===================================================================
--- openssl/crypto/sha/asm/sha1-x86_64.pl	(revision 105093)
+++ openssl/crypto/sha/asm/sha1-x86_64.pl	(working copy)
@@ -29,14 +29,18 @@
 # Xeon P4	+65%		+0%		9.9
 # Core2		+60%		+10%		7.0
 
-$output=shift;
+$flavour = shift;
+$output  = shift;
+if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
 
+$win64=0; $win64=1 if ($flavour =~ /[nm]asm|mingw64/ || $output =~ /\.asm$/);
+
 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 ( $xlate="${dir}x86_64-xlate.pl" and -f $xlate ) or
 ( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
 die "can't locate x86_64-xlate.pl";
 
-open STDOUT,"| $^X $xlate $output";
+open STDOUT,"| $^X $xlate $flavour $output";
 
 $ctx="%rdi";	# 1st arg
 $inp="%rsi";	# 2nd arg
@@ -69,13 +73,14 @@
 	push	%rbx
 	push	%rbp
 	push	%r12
-	mov	%rsp,%rax
+	mov	%rsp,%r11
 	mov	%rdi,$ctx	# reassigned argument
 	sub	\$`8+16*4`,%rsp
 	mov	%rsi,$inp	# reassigned argument
 	and	\$-64,%rsp
 	mov	%rdx,$num	# reassigned argument
-	mov	%rax,`16*4`(%rsp)
+	mov	%r11,`16*4`(%rsp)
+.Lprologue:
 
 	mov	0($ctx),$A
 	mov	4($ctx),$B
@@ -88,10 +93,12 @@
 sub EPILOGUE {
 my $func=shift;
 $code.=<<___;
-	mov	`16*4`(%rsp),%rsp
-	pop	%r12
-	pop	%rbp
-	pop	%rbx
+	mov	`16*4`(%rsp),%rsi
+	mov	(%rsi),%r12
+	mov	8(%rsi),%rbp
+	mov	16(%rsi),%rbx
+	lea	24(%rsi),%rsp
+.Lepilogue:
 	ret
 .size	$func,.-$func
 ___
@@ -233,8 +240,110 @@
 &EPILOGUE("sha1_block_data_order");
 $code.=<<___;
 .asciz	"SHA1 block transform for x86_64, CRYPTOGAMS by <appro\@openssl.org>"
+.align	16
 ___
 
+# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
+#		CONTEXT *context,DISPATCHER_CONTEXT *disp)
+if ($win64) {
+$rec="%rcx";
+$frame="%rdx";
+$context="%r8";
+$disp="%r9";
+
+$code.=<<___;
+.extern	__imp_RtlVirtualUnwind
+.type	se_handler,\@abi-omnipotent
+.align	16
+se_handler:
+	push	%rsi
+	push	%rdi
+	push	%rbx
+	push	%rbp
+	push	%r12
+	push	%r13
+	push	%r14
+	push	%r15
+	pushfq
+	sub	\$64,%rsp
+
+	mov	120($context),%rax	# pull context->Rax
+	mov	248($context),%rbx	# pull context->Rip
+
+	lea	.Lprologue(%rip),%r10
+	cmp	%r10,%rbx		# context->Rip<.Lprologue
+	jb	.Lin_prologue
+
+	mov	152($context),%rax	# pull context->Rsp
+
+	lea	.Lepilogue(%rip),%r10
+	cmp	%r10,%rbx		# context->Rip>=.Lepilogue
+	jae	.Lin_prologue
+
+	mov	`16*4`(%rax),%rax	# pull saved stack pointer
+	lea	24(%rax),%rax
+
+	mov	-8(%rax),%rbx
+	mov	-16(%rax),%rbp
+	mov	-24(%rax),%r12
+	mov	%rbx,144($context)	# restore context->Rbx
+	mov	%rbp,160($context)	# restore context->Rbp
+	mov	%r12,216($context)	# restore context->R12
+
+.Lin_prologue:
+	mov	8(%rax),%rdi
+	mov	16(%rax),%rsi
+	mov	%rax,152($context)	# restore context->Rsp
+	mov	%rsi,168($context)	# restore context->Rsi
+	mov	%rdi,176($context)	# restore context->Rdi
+
+	mov	40($disp),%rdi		# disp->ContextRecord
+	mov	$context,%rsi		# context
+	mov	\$154,%ecx		# sizeof(CONTEXT)
+	.long	0xa548f3fc		# cld; rep movsq
+
+	mov	$disp,%rsi
+	xor	%rcx,%rcx		# arg1, UNW_FLAG_NHANDLER
+	mov	8(%rsi),%rdx		# arg2, disp->ImageBase
+	mov	0(%rsi),%r8		# arg3, disp->ControlPc
+	mov	16(%rsi),%r9		# arg4, disp->FunctionEntry
+	mov	40(%rsi),%r10		# disp->ContextRecord
+	lea	56(%rsi),%r11		# &disp->HandlerData
+	lea	24(%rsi),%r12		# &disp->EstablisherFrame
+	mov	%r10,32(%rsp)		# arg5
+	mov	%r11,40(%rsp)		# arg6
+	mov	%r12,48(%rsp)		# arg7
+	mov	%rcx,56(%rsp)		# arg8, (NULL)
+	call	*__imp_RtlVirtualUnwind(%rip)
+
+	mov	\$1,%eax		# ExceptionContinueSearch
+	add	\$64,%rsp
+	popfq
+	pop	%r15
+	pop	%r14
+	pop	%r13
+	pop	%r12
+	pop	%rbp
+	pop	%rbx
+	pop	%rdi
+	pop	%rsi
+	ret
+.size	se_handler,.-se_handler
+
+.section	.pdata
+.align	4
+	.rva	.LSEH_begin_sha1_block_data_order
+	.rva	.LSEH_end_sha1_block_data_order
+	.rva	.LSEH_info_sha1_block_data_order
+
+.section	.xdata
+.align	8
+.LSEH_info_sha1_block_data_order:
+	.byte	9,0,0,0
+	.rva	se_handler
+___
+}
+
 ####################################################################
 
 $code =~ s/\`([^\`]*)\`/eval $1/gem;