aboutsummaryrefslogtreecommitdiff
path: root/REORG.TODO/sysdeps/x86_64/bsd-setjmp.S
diff options
context:
space:
mode:
Diffstat (limited to 'REORG.TODO/sysdeps/x86_64/bsd-setjmp.S')
-rw-r--r--REORG.TODO/sysdeps/x86_64/bsd-setjmp.S36
1 files changed, 36 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/x86_64/bsd-setjmp.S b/REORG.TODO/sysdeps/x86_64/bsd-setjmp.S
new file mode 100644
index 0000000000..45ee1234b9
--- /dev/null
+++ b/REORG.TODO/sysdeps/x86_64/bsd-setjmp.S
@@ -0,0 +1,36 @@
+/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. x86-64 version.
+ Copyright (C) 1994-2017 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
+ We cannot do it in C because it must be a tail-call, so frame-unwinding
+ in setjmp doesn't clobber the state restored by longjmp. */
+
+#include <sysdep.h>
+#define _ASM
+#define _SETJMP_H
+#include <bits/setjmp.h>
+
+ENTRY (setjmp)
+ /* Set up arguments, we only need to set the 2nd arg. */
+ movl $1, %esi
+#ifdef PIC
+ jmp HIDDEN_JUMPTARGET (__sigsetjmp)
+#else
+ jmp __sigsetjmp
+#endif
+END (setjmp)