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- /* 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. */
- #ifndef UNW_REMOTE_ONLY
- #define UNW_LOCAL_ONLY
- #include <libunwind.h>
- #include <libunwind_i.h>
- #include <string.h>
- /* See glibc manual for a description of this function. */
- static ALWAYS_INLINE int
- slow_backtrace (void **buffer, int size, unw_context_t *uc)
- {
- unw_cursor_t cursor;
- unw_word_t ip;
- int n = 0;
- if (unlikely (unw_init_local (&cursor, uc) < 0))
- return 0;
- while (unw_step (&cursor) > 0)
- {
- if (n >= size)
- return n;
- if (unw_get_reg (&cursor, UNW_REG_IP, &ip) < 0)
- return n;
- buffer[n++] = (void *) (uintptr_t) ip;
- }
- return n;
- }
- int
- unw_backtrace (void **buffer, int size)
- {
- unw_cursor_t cursor;
- unw_context_t uc;
- int n = size;
- tdep_getcontext_trace (&uc);
- if (unlikely (unw_init_local (&cursor, &uc) < 0))
- return 0;
- if (unlikely (tdep_trace (&cursor, buffer, &n) < 0))
- {
- unw_getcontext (&uc);
- return slow_backtrace (buffer, size, &uc);
- }
- return n;
- }
- extern int backtrace (void **buffer, int size)
- __attribute__((weak, alias("unw_backtrace")));
- #endif /* !UNW_REMOTE_ONLY */
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