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- /* Copyright (C) 2003-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- 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 <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)[0].__sp))
- #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
- _JMPBUF_UNWINDS_ADJ (_jmpbuf, \
- (void *) (_Unwind_Ptr) _Unwind_GetCFA (_context), \
- _adj)
- static inline uintptr_t __attribute__ ((unused))
- _jmpbuf_sp (__jmp_buf regs)
- {
- uintptr_t sp = (uintptr_t) regs[0].__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)
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