projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 04277e02 | 1 | /* Copyright (C) 2003-2019 Free Software Foundation, Inc. |
| 58e8ec84 UD |
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 | |
| 59ba27a6 | 16 | License along with the GNU C Library; if not, see |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 58e8ec84 UD |
18 | |
| 19 | #include <setjmp.h> | |
| c7699aa5 | 20 | #include <jmpbuf-offsets.h> |
| 675620f7 | 21 | #include <stdint.h> |
| 58e8ec84 | 22 | #include <unwind.h> |
| 6bdd38ba | 23 | #include <bits/wordsize.h> |
| db169ed5 | 24 | #include <sysdep.h> |
| 58e8ec84 | 25 | |
| 0ca13e14 RM |
26 | |
| 27 | /* Test if longjmp to JMPBUF would unwind the frame | |
| 28 | containing a local variable at ADDRESS. */ | |
| 29 | #define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \ | |
| 30 | ((void *) (address) < (void *) demangle ((jmpbuf)->__gregs[__JB_GPR15])) | |
| 31 | ||
| 32 | ||
| 6bdd38ba UD |
33 | /* On s390{,x}, CFA is always 96 (resp. 160) bytes above actual |
| 34 | %r15. */ | |
| 675620f7 | 35 | #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ |
| 6bdd38ba UD |
36 | _JMPBUF_UNWINDS_ADJ (_jmpbuf, \ |
| 37 | (void *) (_Unwind_GetCFA (_context) \ | |
| 38 | - 32 - 2 * __WORDSIZE), _adj) | |
| 675620f7 | 39 | |
| db169ed5 RM |
40 | static inline uintptr_t __attribute__ ((unused)) |
| 41 | _jmpbuf_sp (__jmp_buf regs) | |
| 42 | { | |
| 56e7d3ad | 43 | void *sp = (void *) (uintptr_t) regs[0].__gregs[__JB_GPR15]; |
| db169ed5 RM |
44 | #ifdef PTR_DEMANGLE |
| 45 | PTR_DEMANGLE (sp); | |
| 46 | #endif | |
| 56e7d3ad | 47 | return (uintptr_t) sp; |
| db169ed5 RM |
48 | } |
| 49 | ||
| 50 | #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ | |
| 51 | ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) | |
| f76c8499 | 52 | |
| 6bdd38ba | 53 | /* We use the normal longjmp for unwinding. */ |
| f76c8499 | 54 | #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) |