1 /* Examine __jmp_buf for unwinding frames. m68k version.
2 Copyright (C) 2006-2017 Free Software Foundation, Inc.
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
15 License along with the GNU C Library. If not, see
16 <http://www.gnu.org/licenses/>. */
17
18 #include <setjmp.h>
19
20 /* Test if longjmp to JMPBUF would unwind the frame
21 containing a local variable at ADDRESS. */
22 #define _JMPBUF_UNWINDS(jmpbuf, address) \
23 ((void *) (address) < (void *) (jmpbuf)->__aregs[5])
24
25 #ifdef __UCLIBC_HAS_THREADS_NATIVE__
26 #include <stdint.h>
27 #include <unwind.h>
28
29 #define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
30 _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
31
32 static inline uintptr_t __attribute__ ((unused))
_jmpbuf_sp(__jmp_buf regs)33 _jmpbuf_sp (__jmp_buf regs)
34 {
35 uintptr_t sp = (uintptr_t) regs[0].__sp;
36 return sp;
37 }
38
39 #define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
40 ((uintptr_t) (_address) - (_adj) < _jmpbuf_sp (_jmpbuf) - (_adj))
41 #endif
42