projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| b168057a | 1 | /* Copyright (C) 2003-2015 Free Software Foundation, Inc. |
| c881d743 RM |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. | |
| 4 | ||
| 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. | |
| 9 | ||
| 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. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| c881d743 RM |
18 | |
| 19 | #include <setjmp.h> | |
| c07312e9 | 20 | #include <jmpbuf-offsets.h> |
| c881d743 RM |
21 | #include <stdint.h> |
| 22 | #include <unwind.h> | |
| 23 | #include <sysdep.h> | |
| 24 | ||
| b0d5e44d RM |
25 | /* Test if longjmp to JMPBUF would unwind the frame containing a local |
| 26 | variable at ADDRESS. */ | |
| 27 | #define _JMPBUF_UNWINDS(_jmpbuf, _address, _demangle) \ | |
| 28 | ((void *)(_address) < (void *) _demangle ((_jmpbuf)[JB_SP])) | |
| 29 | ||
| c881d743 RM |
30 | #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ |
| 31 | _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj) | |
| 32 | ||
| 33 | static inline uintptr_t __attribute__ ((unused)) | |
| 34 | _jmpbuf_sp (__jmp_buf regs) | |
| 35 | { | |
| 36 | uintptr_t sp = regs[JB_SP]; | |
| 37 | #ifdef PTR_DEMANGLE | |
| 38 | PTR_DEMANGLE (sp); | |
| 39 | #endif | |
| 40 | return sp; | |
| 41 | } | |
| 42 | ||
| 43 | #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ | |
| 44 | ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) | |
| 45 | ||
| 46 | /* We use the normal longjmp for unwinding. */ | |
| 47 | #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) |