add jmpbuf-unwind.h and jmpbuf-offsets.h to avr32,c6x and xtensa

cleanup bits/setjmp.h and avr32's setjmp.S

Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

3 files changed, 47 insertions, 11 deletions

diff --git a/libc/sysdeps/linux/xtensa/bits/setjmp.h b/libc/sysdeps/linux/xtensa/bits/setjmp.h
index 1bc4896c8..5672943b8 100644
--- a/libc/sysdeps/linux/xtensa/bits/setjmp.h
+++ b/libc/sysdeps/linux/xtensa/bits/setjmp.h
@@ -30,17 +30,6 @@
    subsequent alloca in proc moves $sp), and the return address within
    proc.  Everything else is saved on the stack in the normal save areas.  */
 
-#ifndef	_ASM
 typedef int __jmp_buf[17];
-#endif
-
-#define JB_SP	1
-#define JB_PC	16
-
-/* Test if longjmp to JMPBUF would unwind the frame containing a local
-   variable at ADDRESS.  */
-
-#define _JMPBUF_UNWINDS(jmpbuf, address) \
-  ((void *) (address) < (void *) (jmpbuf)[JB_SP])
 
 #endif	/* bits/setjmp.h */
diff --git a/libc/sysdeps/linux/xtensa/jmpbuf-offsets.h b/libc/sysdeps/linux/xtensa/jmpbuf-offsets.h
new file mode 100644
index 000000000..b2876eff9
--- /dev/null
+++ b/libc/sysdeps/linux/xtensa/jmpbuf-offsets.h
@@ -0,0 +1,21 @@
+/* Private macros for accessing __jmp_buf contents.  Xtensa version.
+   Copyright (C) 2006 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.  */
+
+#define JB_SP	1
+#define JB_PC	16
diff --git a/libc/sysdeps/linux/xtensa/jmpbuf-unwind.h b/libc/sysdeps/linux/xtensa/jmpbuf-unwind.h
new file mode 100644
index 000000000..160a70cf2
--- /dev/null
+++ b/libc/sysdeps/linux/xtensa/jmpbuf-unwind.h
@@ -0,0 +1,26 @@
+/* Copyright (C) 1997, 1998, 2007 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., 51 Franklin Street - Fifth Floor,
+   Boston, MA 02110-1301, USA.  */
+
+/* Test if longjmp to JMPBUF would unwind the frame containing a local
+   variable at ADDRESS.  */
+
+#include <setjmp.h>
+#include <jmpbuf-offsets.h>
+
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+  ((void *) (address) < (void *) (jmpbuf)[JB_SP])