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) 2004 Hewlett-Packard Co
        Contributed by David Mosberger-Tang <davidm@hpl.hp.com>

   Modified for x86_64 by Max Asbock <masbock@us.ibm.com>
   Modified for s390x by Michael Munday <mike.munday@ibm.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"

int
unw_get_save_loc (unw_cursor_t *cursor, int reg, unw_save_loc_t *sloc)
{
  struct cursor *c = (struct cursor *) cursor;
  dwarf_loc_t loc;

  loc = DWARF_NULL_LOC;         /* default to "not saved" */

  switch (reg)
    {
    case UNW_S390X_R6:
    case UNW_S390X_R7:
    case UNW_S390X_R8:
    case UNW_S390X_R9:
    case UNW_S390X_R10:
    case UNW_S390X_R11:
    case UNW_S390X_R12:
    case UNW_S390X_R13:
    case UNW_S390X_R15:
    case UNW_S390X_F8:
    case UNW_S390X_F9:
    case UNW_S390X_F10:
    case UNW_S390X_F11:
    case UNW_S390X_F12:
    case UNW_S390X_F13:
    case UNW_S390X_F14:
    case UNW_S390X_F15:
      loc = c->dwarf.loc[reg];
      break;

    default:
      break;
    }

  memset (sloc, 0, sizeof (*sloc));

  if (DWARF_IS_NULL_LOC (loc))
    {
      sloc->type = UNW_SLT_NONE;
      return 0;
    }

#if !defined(UNW_LOCAL_ONLY)
  if (DWARF_IS_REG_LOC (loc))
    {
      sloc->type = UNW_SLT_REG;
      sloc->u.regnum = DWARF_GET_LOC (loc);
    }
  else
#endif
    {
      sloc->type = UNW_SLT_MEMORY;
      sloc->u.addr = DWARF_GET_LOC (loc);
    }
  return 0;
}