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- /* libunwind - a platform-independent unwind library
- Copyright (C) 2003-2004 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 <libunwind.h>
- #include <setjmp.h>
- #include "jmpbuf.h"
- /* Why use K&R syntax here? setjmp() is often a macro and that
- expands into a call to, say, __setjmp() and we need to define the
- libunwind-version of setjmp() with the name of the actual function.
- Using K&R syntax lets us keep the setjmp() macro while keeping the
- syntax valid... This trick works provided setjmp() doesn't do
- anything other than a function call. */
- int
- setjmp (env)
- jmp_buf env;
- {
- void **wp = (void **) env;
- /* this should work on most platforms, but may not be
- performance-optimal; check the code! */
- wp[JB_SP] = __builtin_frame_address (0);
- wp[JB_RP] = (void *) __builtin_return_address (0);
- return 0;
- }
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