diff options
Diffstat (limited to 'ports/sysdeps/ia64/jmpbuf-unwind.h')
| -rw-r--r-- | ports/sysdeps/ia64/jmpbuf-unwind.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/ports/sysdeps/ia64/jmpbuf-unwind.h b/ports/sysdeps/ia64/jmpbuf-unwind.h new file mode 100644 index 0000000000..1a8ff804aa --- /dev/null +++ b/ports/sysdeps/ia64/jmpbuf-unwind.h @@ -0,0 +1,43 @@ +/* Copyright (C) 2003, 2004, 2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. + + 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/>. */ + +#include <setjmp.h> +#include <stdint.h> +#include <unwind.h> + +/* Test if longjmp to JMPBUF would unwind the frame containing a local + variable at ADDRESS. */ +#define _JMPBUF_UNWINDS(_jmpbuf, _address, _demangle) \ + ((void *) (_address) < (void *) (((long int *) _jmpbuf)[0])) + +#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ + ({ uintptr_t _cfa = (uintptr_t) _Unwind_GetCFA (_context) - (_adj); \ + (_cfa < (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj) \ + || (_cfa == (uintptr_t)(((long *)(_jmpbuf))[0]) - (_adj) \ + && (uintptr_t) _Unwind_GetBSP (_context) - (_adj) \ + >= (uintptr_t)(((long *)(_jmpbuf))[17]) - (_adj))); \ + }) + +#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ + ((uintptr_t)(_address) - (_adj) < (uintptr_t)(((long *)_jmpbuf)[0]) - (_adj)) + +/* We use a longjmp() which can cross from the alternate signal-stack + to the normal stack. */ +extern void __libc_unwind_longjmp (sigjmp_buf env, int val) + __attribute__ ((noreturn)); +hidden_proto (__libc_unwind_longjmp) |