libdd-libunwind-sys 1.0.2

Rust bindings for using unwind library inside libdatadog
Documentation 
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/* libunwind - a platform-independent unwind library
   Copyright (C) 2008 CodeSourcery

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 unwind_i_h
#define unwind_i_h

#include <stdint.h>

#include <libunwind-arm.h>

#include "libunwind_i.h"

/* DWARF column numbers for ARM: */
#define R7      7
#define SP      13
#define LR      14
#define PC      15

#define arm_lock                        UNW_OBJ(lock)
#define arm_local_resume                UNW_OBJ(local_resume)
#define arm_local_addr_space_init       UNW_OBJ(local_addr_space_init)

extern void arm_local_addr_space_init (void);
extern int arm_local_resume (unw_addr_space_t as, unw_cursor_t *cursor,
                             void *arg);
#define arm_handle_signal_frame UNW_OBJ(handle_signal_frame)
extern int arm_handle_signal_frame(unw_cursor_t *cursor);

/* By-pass calls to access_mem() when known to be safe. */
#ifdef UNW_LOCAL_ONLY
# undef ACCESS_MEM_FAST
# define ACCESS_MEM_FAST(ret,validate,cur,addr,to)                     \
  do {                                                                 \
    if (unlikely(validate))                                            \
      (ret) = dwarf_get ((cur), DWARF_MEM_LOC ((cur), (addr)), &(to)); \
    else                                                               \
      (ret) = 0, (to) = *(unw_word_t *)(addr);                         \
  } while (0)
#endif

#endif /* unwind_i_h */