/* 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 "unwind-internal.h" /* ANDROID support update. */ PROTECTED _Unwind_Reason_Code _Unwind_RaiseException (struct _Unwind_Exception *exception_object) { uint64_t exception_class = exception_object->exception_class; _Unwind_Personality_Fn personality; struct _Unwind_Context context; _Unwind_Reason_Code reason; unw_proc_info_t pi; unw_context_t uc; unw_word_t ip; int ret; int destroy_map = 1; Debug (1, "(exception_object=%p)\n", exception_object); unw_map_local_create (); if (_Unwind_InitContext (&context, &uc) < 0) { ret = _URC_FATAL_PHASE1_ERROR; goto done; } /* Phase 1 (search phase) */ while (1) { if (unw_step (&context.cursor) <= 0) { Debug (1, "no handler found\n"); ret = _URC_END_OF_STACK; goto done; } if (unw_get_proc_info (&context.cursor, &pi) < 0) { ret = _URC_FATAL_PHASE1_ERROR; goto done; } personality = (_Unwind_Personality_Fn) (uintptr_t) pi.handler; if (personality) { reason = (*personality) (_U_VERSION, _UA_SEARCH_PHASE, exception_class, exception_object, &context); if (reason != _URC_CONTINUE_UNWIND) { if (reason == _URC_HANDLER_FOUND) break; else { Debug (1, "personality returned %d\n", reason); ret = _URC_FATAL_PHASE1_ERROR; goto done; } } } } /* Exceptions are associated with IP-ranges. If a given exception is handled at a particular IP, it will _always_ be handled at that IP. If this weren't true, we'd have to track the tuple (IP,SP,BSP) to uniquely identify the stack frame that's handling the exception. */ if (unw_get_reg (&context.cursor, UNW_REG_IP, &ip) < 0) ret = _URC_FATAL_PHASE1_ERROR; else { exception_object->private_1 = 0; /* clear "stop" pointer */ exception_object->private_2 = ip; /* save frame marker */ Debug (1, "found handler for IP=%lx; entering cleanup phase\n", (long) ip); /* Reset the cursor to the first frame: */ if (unw_init_local (&context.cursor, &uc) < 0) ret = _URC_FATAL_PHASE1_ERROR; else ret = _Unwind_Phase2 (exception_object, &context, &destroy_map); } done: if (destroy_map) unw_map_local_destroy (); return ret; } /* End ANDROID support. */ _Unwind_Reason_Code __libunwind_Unwind_RaiseException (struct _Unwind_Exception *) ALIAS (_Unwind_RaiseException);