1 /* Copyright (C) 2005-2021 Free Software Foundation, Inc. 2 3 This file is part of the GNU C Library. 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 License as 7 published by the Free Software Foundation; either version 2.1 of the 8 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 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #include <setjmp.h> 20 #include <jmpbuf-offsets.h> 21 #include <stdint.h> 22 #include <unwind.h> 23 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_SP])) 28 29 #define _JMPBUF_CFA_UNWINDS_ADJ(jmpbuf, context, adj) \ 30 _JMPBUF_UNWINDS_ADJ (jmpbuf, (void *) (uintptr_t) _Unwind_GetCFA (context), \ 31 adj) 32 33 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \ 34 ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj)) 35 36 /* We use the normal longjmp for unwinding. */ 37 #define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val) 38