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Diffstat (limited to 'contrib/gcc/unwind-libunwind.c')
| -rw-r--r-- | contrib/gcc/unwind-libunwind.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/contrib/gcc/unwind-libunwind.c b/contrib/gcc/unwind-libunwind.c deleted file mode 100644 index 2e53a59..0000000 --- a/contrib/gcc/unwind-libunwind.c +++ /dev/null @@ -1,172 +0,0 @@ -/* Subroutines needed for unwinding stack frames via the libunwind API. - Copyright (C) 2002, 2003 - Free Software Foundation, Inc. - Contributed by David Mosberger-Tang <davidm@hpl.hp.com> - - This file is part of GCC. - - GCC is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GCC is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GCC; see the file COPYING. If not, write to - the Free Software Foundation, 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -/* As a special exception, if you link this library with other files, - some of which are compiled with GCC, to produce an executable, - this library does not by itself cause the resulting executable - to be covered by the GNU General Public License. - This exception does not however invalidate any other reasons why - the executable file might be covered by the GNU General Public License. */ - -#include "tconfig.h" -#include "tsystem.h" -#include "unwind.h" - -#ifndef __USING_SJLJ_EXCEPTIONS__ - -#define UNW_LOCAL_ONLY - -#include <libunwind.h> - -typedef struct { - _Unwind_Personality_Fn personality; -} _Unwind_FrameState; - -struct _Unwind_Context { - unw_cursor_t cursor; -}; - - -/* First come the helper-routines that are needed by unwind.inc. */ - -static _Unwind_Reason_Code -uw_frame_state_for (struct _Unwind_Context *context, _Unwind_FrameState *fs) -{ - unw_proc_info_t pi; - - if (unw_step (&context->cursor) <= 0) - return _URC_END_OF_STACK; - - unw_get_proc_info(&context->cursor, &pi); - fs->personality = (_Unwind_Personality_Fn) pi.handler; - - return _URC_NO_REASON; -} - -#define uw_update_context(context,fs) do { ; } while (0) - -static inline _Unwind_Ptr -uw_identify_context (struct _Unwind_Context *context) -{ - unw_word_t ip; - unw_get_reg (&context->cursor, UNW_REG_IP, &ip); - return (_Unwind_Ptr) ip; -} - -#define uw_init_context(context) \ -do \ - { \ - unw_context_t uc; \ - unw_getcontext (&uc); \ - unw_init_local (&(context)->cursor, &uc); \ - } \ -while (0) - -static inline void __attribute__ ((noreturn)) -uw_install_context (struct _Unwind_Context *current __attribute__ ((unused)), - struct _Unwind_Context *target) -{ - unw_resume (&(target)->cursor); - abort (); -} - - -/* Now come the helper-routines which may be called from an exception - handler. The interface for these routines are defined by the C++ - ABI. See: http://www.codesourcery.com/cxx-abi/abi-eh.html */ - -_Unwind_Word -_Unwind_GetGR (struct _Unwind_Context *context, int index) -{ - unw_word_t ret; - - /* Note: here we depend on the fact that general registers are - expected to start with register number 0! */ - unw_get_reg (&context->cursor, index, &ret); - return ret; -} - -/* Get the value of the CFA as saved in CONTEXT. */ - -_Unwind_Word -_Unwind_GetCFA (struct _Unwind_Context *context) -{ - /* ??? Is there any way to get this information? */ - return NULL; -} - -/* Overwrite the saved value for register REG in CONTEXT with VAL. */ - -void -_Unwind_SetGR (struct _Unwind_Context *context, int index, _Unwind_Word val) -{ - /* Note: here we depend on the fact that general registers are - expected to start with register number 0! */ - unw_set_reg (&context->cursor, index, val); -} - -/* Retrieve the return address for CONTEXT. */ - -inline _Unwind_Ptr -_Unwind_GetIP (struct _Unwind_Context *context) -{ - unw_word_t ret; - - unw_get_reg (&context->cursor, UNW_REG_IP, &ret); - return ret; -} - -/* Overwrite the return address for CONTEXT with VAL. */ - -inline void -_Unwind_SetIP (struct _Unwind_Context *context, _Unwind_Ptr val) -{ - unw_set_reg (&context->cursor, UNW_REG_IP, val); -} - -void * -_Unwind_GetLanguageSpecificData (struct _Unwind_Context *context) -{ - unw_proc_info_t pi; - - unw_get_proc_info(&context->cursor, &pi); - return (void *) pi.lsda; -} - -_Unwind_Ptr -_Unwind_GetRegionStart (struct _Unwind_Context *context) -{ - unw_proc_info_t pi; - - unw_get_proc_info(&context->cursor, &pi); - return (_Unwind_Ptr) pi.start_ip; -} - -void * -_Unwind_FindEnclosingFunction (void *pc) -{ - return NULL; -} - -#include "unwind.inc" - -#endif /* !__USING_SJLJ_EXCEPTIONS__ */ |
