From a1225d2244292daabbb5aeb035f4edeb109450c4 Mon Sep 17 00:00:00 2001
From: cgf <cgf>
Date: Wed, 18 Feb 2004 20:48:37 +0000
Subject: [PATCH] * gendef (stabilize_sig_stack): New function. (setjmp):
 Import, add sig stack handling.  Store sig stack info. (longjmp): Call
 stabilize_sig_stack.  Restore sig stack info. * config/i386/setjmp.c: Remove.

---
 winsup/cygwin/ChangeLog            |  7 +++++
 winsup/cygwin/config/i386/setjmp.c | 48 ------------------------------
 winsup/cygwin/gendef               | 61 ++++++++++++++++++++++++++++++++++----
 3 files changed, 62 insertions(+), 54 deletions(-)
 delete mode 100644 winsup/cygwin/config/i386/setjmp.c

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index b048677cf3..12e69f5ed8 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,10 @@
+2004-02-18  Christopher Faylor  <cgf@redhat.com>
+
+	* gendef (stabilize_sig_stack): New function.
+	(setjmp): Import, add sig stack handling.  Store sig stack info.
+	(longjmp): Call stabilize_sig_stack.  Restore sig stack info.
+	* config/i386/setjmp.c: Remove.
+
 2004-02-17  Corinna Vinschen  <corinna@vinschen.de>
 
 	* fork.cc (fork_child): Move fixup_shms_after_fork so that
diff --git a/winsup/cygwin/config/i386/setjmp.c b/winsup/cygwin/config/i386/setjmp.c
deleted file mode 100644
index 9104c2c83d..0000000000
--- a/winsup/cygwin/config/i386/setjmp.c
+++ /dev/null
@@ -1,48 +0,0 @@
-/* setjmp.c
-
-   Copyright 1996, 1998, 1999, 2000, 2001 Red Hat, Inc.
-
-This file is part of Cygwin.
-
-This software is a copyrighted work licensed under the terms of the
-Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
-details. */
-
-#ifdef __i386__
-
-#if 1
-asm("	.globl	_setjmp			\n"
-"_setjmp:				\n"
-"	pushl	%ebp			\n"
-"	movl	%esp,%ebp		\n"
-"	pushl	%edi			\n"
-"	movl	8(%ebp),%edi		\n"
-"	movl	%eax,0(%edi)		\n"
-"	movl	%ebx,4(%edi)		\n"
-"	movl	%ecx,8(%edi)		\n"
-"	movl	%edx,12(%edi)		\n"
-"	movl	%esi,16(%edi)		\n"
-"	movl	-4(%ebp),%eax		\n"
-"	movl	%eax,20(%edi)		\n"
-"	movl	0(%ebp),%eax		\n"
-"	movl	%eax,24(%edi)		\n"
-"	movl	%esp,%eax		\n"
-"	addl	$12,%eax		\n"
-"	movl	%eax,28(%edi)		\n"
-"	movl	4(%ebp),%eax		\n"
-"	movl	%eax,32(%edi)		\n"
-"	movw	%es, %ax		\n"
-"	movw	%ax, 36(%edi)		\n"
-"	movw	%fs, %ax		\n"
-"	movw	%ax, 38(%edi)		\n"
-"	movw	%gs, %ax		\n"
-"	movw	%ax, 40(%edi)		\n"
-"	movw	%ss, %ax		\n"
-"	movw	%ax, 42(%edi)		\n"
-"	popl	%edi			\n"
-"	movl	$0,%eax			\n"
-"	leave				\n"
-"	ret				\n");
-#endif
-
-#endif /* __i386__ */
diff --git a/winsup/cygwin/gendef b/winsup/cygwin/gendef
index 009c27db14..d46dbb9509 100755
--- a/winsup/cygwin/gendef
+++ b/winsup/cygwin/gendef
@@ -236,9 +236,8 @@ EOF
 sub longjmp {
     return <<EOF;
 
-	.globl	_longjmp
-
-_longjmp:
+	.extern	__ZN7_cygtls19call_signal_handlerEv
+stabilize_sig_stack:
 1:	movl	%fs:4,%edx
 	movl	\$1,%eax
 	lock	xchgl %eax,$tls::stacklock(%edx)
@@ -248,12 +247,63 @@ _longjmp:
 	xorl	%eax,%eax
 	call	_low_priority_sleep
 	jmp	1b
-2:	leal	($tls::stack)(%edx),%eax
-	movl	%eax,($tls::stackptr)(%edx)
+2:	cmpl	\$0,$tls::sig(%edx)
+	jz	3f
+	decl	$tls::stacklock(%edx)
+	movl	%edx,%eax
+	call	__ZN7_cygtls19call_signal_handlerEv
+	jmp	1b
+3:	ret
 
+	.globl	_setjmp
+_setjmp:
 	pushl	%ebp
 	movl	%esp,%ebp
+	pushl	%edi
 	movl	8(%ebp),%edi
+	movl	%eax,0(%edi)
+	movl	%ebx,4(%edi)
+	movl	%ecx,8(%edi)
+	movl	%edx,12(%edi)
+	movl	%esi,16(%edi)
+	movl	-4(%ebp),%eax
+	movl	%eax,20(%edi)
+	movl	0(%ebp),%eax
+	movl	%eax,24(%edi)
+	movl	%esp,%eax
+	addl	\$12,%eax
+	movl	%eax,28(%edi)
+	movl	4(%ebp),%eax
+	movl	%eax,32(%edi)
+	movw	%es,%ax
+	movw	%ax,36(%edi)
+	movw	%fs,%ax
+	movw	%ax,38(%edi)
+	movw	%gs,%ax
+	movw	%ax,40(%edi)
+	movw	%ss,%ax
+	movw	%ax,42(%edi)
+	pushl	%edx
+	call	stabilize_sig_stack
+	movl	$tls::stackptr(%edx),%eax		# save stack pointer contents
+	decl	$tls::stacklock(%edx)
+	popl	%edx
+	movl	%eax,44(%edi)
+	popl	%edi
+	movl	\$0,%eax
+	leave
+	ret
+
+	.globl	_longjmp
+_longjmp:
+	pushl	%ebp
+	movl	%esp,%ebp
+	movl	8(%ebp),%edi				# address of buffer
+	call	stabilize_sig_stack
+	movl	44(%edi),%eax				# get old signal stack
+	movl	%eax,$tls::stackptr(%edx)		# restore
+	decl	$tls::stacklock(%edx)			# relinquish lock
+
 	movl	12(%ebp),%eax
 	testl	%eax,%eax
 	jne	3f
@@ -276,7 +326,6 @@ _longjmp:
 	movl	4(%edi),%ebx
 	movl	8(%edi),%ecx
 	movl	16(%edi),%esi
-	decl	$tls::stacklock(%edx)
 	movl	12(%edi),%edx
 	movl	20(%edi),%edi
 	popfl
-- 
2.11.0