| /* Copyright (C) 2011-2016 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. |
| Based on work 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 <jmpbuf-offsets.h> |
| #include <stdint.h> |
| #include <unwind.h> |
| #include <sysdep.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 *) demangle ((jmpbuf)[JB_SP])) |
| |
| #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ |
| _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) (long) _Unwind_GetCFA (_context), _adj) |
| |
| static inline uintptr_t __attribute__ ((unused)) |
| _jmpbuf_sp (__jmp_buf regs) |
| { |
| uintptr_t sp = regs[JB_SP]; |
| #ifdef PTR_DEMANGLE |
| PTR_DEMANGLE (sp); |
| #endif |
| return sp; |
| } |
| |
| #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ |
| ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) |
| |
| /* We use the normal longjmp for unwinding. */ |
| #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) |