2006-02-20 Roland McGrath <roland@redhat.com>
[glibc-ports.git] / sysdeps / alpha / jmpbuf-unwind.h
blobca5f693d5db793dfa9fe1186eadd4af321bcc70b
1 /* Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <setjmp.h>
21 #include <jmpbuf-offsets.h>
22 #include <stdint.h>
23 #include <unwind.h>
24 #include <sysdep.h>
26 /* Test if longjmp to JMPBUF would unwind the frame containing a local
27 variable at ADDRESS. */
28 #define _JMPBUF_UNWINDS(_jmpbuf, _address, _demangle) \
29 ((void *)(_address) < (void *) _demangle ((_jmpbuf)[JB_SP]))
31 #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
32 _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
34 static inline uintptr_t __attribute__ ((unused))
35 _jmpbuf_sp (__jmp_buf regs)
37 uintptr_t sp = regs[JB_SP];
38 #ifdef PTR_DEMANGLE
39 PTR_DEMANGLE (sp);
40 #endif
41 return sp;
44 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
45 ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj))
47 /* We use the normal longjmp for unwinding. */
48 #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)