123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354 |
- /* libunwind - a platform-independent unwind library
- Copyright (C) 2001-2002 Hewlett-Packard Co
- Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
- This file is part of libunwind.
- Permission is hereby granted, free of charge, to any person obtaining
- a copy of this software and associated documentation files (the
- "Software"), to deal in the Software without restriction, including
- without limitation the rights to use, copy, modify, merge, publish,
- distribute, sublicense, and/or sell copies of the Software, and to
- permit persons to whom the Software is furnished to do so, subject to
- the following conditions:
- The above copyright notice and this permission notice shall be
- included in all copies or substantial portions of the Software.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
- #include "unwind_i.h"
- PROTECTED int
- unw_is_signal_frame (unw_cursor_t *cursor)
- {
- struct cursor *c = (struct cursor *) cursor;
- struct ia64_state_record sr;
- int ret;
- /* Crude and slow, but we need to peek ahead into the unwind
- descriptors to find out if the current IP is inside the signal
- trampoline. */
- ret = ia64_fetch_proc_info (c, c->ip, 1);
- if (ret < 0)
- return ret;
- ret = ia64_create_state_record (c, &sr);
- if (ret < 0)
- return ret;
- /* For now, we assume that any non-zero abi marker implies a signal frame.
- This should get us pretty far. */
- ret = (sr.abi_marker != 0);
- ia64_free_state_record (&sr);
- Debug (1, "(cursor=%p, ip=0x%016lx) -> %d\n", c, c->ip, ret);
- return ret;
- }
|