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authorUlrich Drepper <drepper@redhat.com>2001-01-16 23:37:51 +0000
committerUlrich Drepper <drepper@redhat.com>2001-01-16 23:37:51 +0000
commit376c348c9175470e8f48a563311203cbf8bf7e80 (patch)
tree1725ce297747e29ea09e6b324404caf594332e5b /sysdeps/i386/bsd-setjmp.S
parentf806546c561b08d180e6f481a2720bcbbcfb9cda (diff)
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Update.
	* sysdeps/i386/elf/bsd-setjmp.S: Real implementation.
	* sysdeps/i386/elf/bsd-_setjmp.S: Removed.
	* sysdeps/i386/elf/setjmp.S (setjmp): Removed here.
	* sysdeps/i386/bsd-_setjmp.S: Real implementation.
	* sysdeps/i386/bsd-setjmp.S: Real implementation.
	* sysdeps/i386/bits/setjmp.h: Remove PUSH_SIGNAL_MASK definition.
	* sysdeps/i386/setjmp.S: Remove PIC support.  This is the non-ELF
	version.
	* stdio-common/tstscanf.c (main): Add two testcases for '*' modifier.
Diffstat (limited to 'sysdeps/i386/bsd-setjmp.S')
-rw-r--r--sysdeps/i386/bsd-setjmp.S42
1 files changed, 27 insertions, 15 deletions
diff --git a/sysdeps/i386/bsd-setjmp.S b/sysdeps/i386/bsd-setjmp.S
index b26b0e1186..8fd69d6c6a 100644
--- a/sysdeps/i386/bsd-setjmp.S
+++ b/sysdeps/i386/bsd-setjmp.S
@@ -1,5 +1,5 @@
 /* BSD `setjmp' entry point to `sigsetjmp (..., 1)'.  i386 version.
-   Copyright (C) 1994, 1995, 1996, 1997, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1994,1995,1996,1997,2000,2001 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -29,18 +29,30 @@
 #include "bp-asm.h"
 
 ENTRY (BP_SYM (setjmp))
-	PUSH_SIGNAL_MASK (1)
-#ifdef	PIC
-	/* We cannot use the PLT, because it requires that %ebx be set, but
-           we can't save and restore our caller's value.  Instead, we do an
-           indirect jump through the GOT, using for the temporary register
-           %ecx, which is call-clobbered.  */
-	call here
-here:	popl %ecx
-	addl $_GLOBAL_OFFSET_TABLE_+[.-here], %ecx
-	movl C_SYMBOL_NAME (BP_SYM (__sigsetjmp)@GOT)(%ecx), %ecx
-	jmp *%ecx
-#else
-	jmp BP_SYM (__sigsetjmp)
-#endif
+	/* Note that we have to use a non-exported symbol in the next
+	   jump since otherwise gas will emit it as a jump through the
+	   PLT which is what we cannot use here.  */
+	ENTER
+
+	movl JMPBUF(%esp), %eax
+	CHECK_BOUNDS_BOTH_WIDE (%eax, JMPBUF(%esp), $JB_SIZE)
+
+     	/* Save registers.  */
+	movl %ebx, (JB_BX*4)(%eax)
+	movl %esi, (JB_SI*4)(%eax)
+	movl %edi, (JB_DI*4)(%eax)
+	leal JMPBUF(%esp), %ecx	/* Save SP as it will be after we return.  */
+     	movl %ecx, (JB_SP*4)(%eax)
+	movl PCOFF(%esp), %ecx	/* Save PC we are returning to now.  */
+     	movl %ecx, (JB_PC*4)(%eax)
+	LEAVE /* pop frame pointer to prepare for tail-call.  */
+	movl %ebp, (JB_BP*4)(%eax) /* Save caller's frame pointer.  */
+
+	/* Call __sigjmp_save.  */
+	pushl $1
+	pushl 8(%esp)
+	call BP_SYM (__sigjmp_save)
+	popl %ecx
+	popl %edx
+	ret
 END (BP_SYM (setjmp))