projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 2b778ceb | 1 | /* Copyright (C) 2003-2021 Free Software Foundation, Inc. |
| 58e8ec84 | 2 | This file is part of the GNU C Library. |
| 58e8ec84 UD |
3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Lesser General Public | |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 | 15 | License along with the GNU C Library; if not, see |
| 5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
| 58e8ec84 UD |
17 | |
| 18 | #include <setjmp.h> | |
| a7140723 | 19 | #include <jmpbuf-offsets.h> |
| 675620f7 | 20 | #include <stdint.h> |
| 58e8ec84 | 21 | #include <unwind.h> |
| db169ed5 | 22 | #include <sysdep.h> |
| 58e8ec84 | 23 | |
| 0ca13e14 RM |
24 | /* Test if longjmp to JMPBUF would unwind the frame |
| 25 | containing a local variable at ADDRESS. */ | |
| 26 | #define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \ | |
| 27 | ((void *) (address) < (void *) demangle ((jmpbuf)[JB_RSP])) | |
| 28 | ||
| 675620f7 | 29 | #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \ |
| 56965fd7 L |
30 | _JMPBUF_UNWINDS_ADJ (_jmpbuf, \ |
| 31 | (void *) (_Unwind_Ptr) _Unwind_GetCFA (_context), \ | |
| 32 | _adj) | |
| 675620f7 | 33 | |
| db169ed5 RM |
34 | static inline uintptr_t __attribute__ ((unused)) |
| 35 | _jmpbuf_sp (__jmp_buf regs) | |
| 36 | { | |
| 37 | uintptr_t sp = regs[JB_RSP]; | |
| 38 | #ifdef PTR_DEMANGLE | |
| 39 | PTR_DEMANGLE (sp); | |
| 40 | #endif | |
| 41 | return sp; | |
| 42 | } | |
| 43 | ||
| 675620f7 | 44 | #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ |
| db169ed5 | 45 | ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) |
| f76c8499 | 46 | |
| de59a291 | 47 | /* We use the normal longjmp for unwinding. */ |
| f76c8499 | 48 | #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) |