mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/* Examine __jmp_buf for unwinding frames.
|
|
Copyright (C) 2022 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
|
|
<https://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_GetCFA (_context), _adj)
|
|
|
|
static inline uintptr_t __attribute__ ((unused)) _jmpbuf_sp (__jmp_buf regs)
|
|
{
|
|
uintptr_t sp = 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)
|