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authorEric Andersen <andersen@codepoet.org>2002-01-31 15:49:34 +0000
committerEric Andersen <andersen@codepoet.org>2002-01-31 15:49:34 +0000
commit8dd9c51eb2f6c5dc659b426dc3bd114751adb405 (patch)
tree5eeeb11b1f38660340b91c83128cdb88cad6d65b /libc/sysdeps/linux/arm/bsd-setjmp.S
parent290b06002e9d168438c418c508e6ab5431b05b62 (diff)
Fixup setjmp and longjmp so they behave themselves properly now
on both x86 and arm... -Erik
Diffstat (limited to 'libc/sysdeps/linux/arm/bsd-setjmp.S')
-rw-r--r--libc/sysdeps/linux/arm/bsd-setjmp.S34
1 files changed, 34 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/arm/bsd-setjmp.S b/libc/sysdeps/linux/arm/bsd-setjmp.S
new file mode 100644
index 000000000..16f077a79
--- /dev/null
+++ b/libc/sysdeps/linux/arm/bsd-setjmp.S
@@ -0,0 +1,34 @@
+/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. ARM version.
+ Copyright (C) 1997, 1998 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* 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. */
+
+#define _SETJMP_H
+#define _ASM
+#include <bits/setjmp.h>
+
+.globl setjmp;
+.type setjmp,%function
+.align 4;
+setjmp:
+ mov r1, #1
+ b __sigsetjmp (PLT)
+.size setjmp,.-setjmp;