| /* 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; |
| } |