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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc2/] [gcc/] [config/] [arm/] [unwind-arm.h] - Rev 282
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/* Header file for the ARM EABI unwinder Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. Contributed by Paul Brook This file 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 3, or (at your option) any later version. This file 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. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ /* Language-independent unwinder header public defines. This contains both ABI defined objects, and GNU support routines. */ #ifndef UNWIND_ARM_H #define UNWIND_ARM_H #define __ARM_EABI_UNWINDER__ 1 #ifdef __cplusplus extern "C" { #endif typedef unsigned _Unwind_Word __attribute__((__mode__(__word__))); typedef signed _Unwind_Sword __attribute__((__mode__(__word__))); typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__))); typedef unsigned _Unwind_Internal_Ptr __attribute__((__mode__(__pointer__))); typedef _Unwind_Word _uw; typedef unsigned _uw64 __attribute__((mode(__DI__))); typedef unsigned _uw16 __attribute__((mode(__HI__))); typedef unsigned _uw8 __attribute__((mode(__QI__))); typedef enum { _URC_OK = 0, /* operation completed successfully */ _URC_FOREIGN_EXCEPTION_CAUGHT = 1, _URC_END_OF_STACK = 5, _URC_HANDLER_FOUND = 6, _URC_INSTALL_CONTEXT = 7, _URC_CONTINUE_UNWIND = 8, _URC_FAILURE = 9 /* unspecified failure of some kind */ } _Unwind_Reason_Code; typedef enum { _US_VIRTUAL_UNWIND_FRAME = 0, _US_UNWIND_FRAME_STARTING = 1, _US_UNWIND_FRAME_RESUME = 2, _US_ACTION_MASK = 3, _US_FORCE_UNWIND = 8, _US_END_OF_STACK = 16 } _Unwind_State; /* Provided only for for compatibility with existing code. */ typedef int _Unwind_Action; #define _UA_SEARCH_PHASE 1 #define _UA_CLEANUP_PHASE 2 #define _UA_HANDLER_FRAME 4 #define _UA_FORCE_UNWIND 8 #define _UA_END_OF_STACK 16 #define _URC_NO_REASON _URC_OK typedef struct _Unwind_Control_Block _Unwind_Control_Block; typedef struct _Unwind_Context _Unwind_Context; typedef _uw _Unwind_EHT_Header; /* UCB: */ struct _Unwind_Control_Block { char exception_class[8]; void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block *); /* Unwinder cache, private fields for the unwinder's use */ struct { _uw reserved1; /* Forced unwind stop fn, 0 if not forced */ _uw reserved2; /* Personality routine address */ _uw reserved3; /* Saved callsite address */ _uw reserved4; /* Forced unwind stop arg */ _uw reserved5; } unwinder_cache; /* Propagation barrier cache (valid after phase 1): */ struct { _uw sp; _uw bitpattern[5]; } barrier_cache; /* Cleanup cache (preserved over cleanup): */ struct { _uw bitpattern[4]; } cleanup_cache; /* Pr cache (for pr's benefit): */ struct { _uw fnstart; /* function start address */ _Unwind_EHT_Header *ehtp; /* pointer to EHT entry header word */ _uw additional; /* additional data */ _uw reserved1; } pr_cache; long long int :0; /* Force alignment to 8-byte boundary */ }; /* Virtual Register Set*/ typedef enum { _UVRSC_CORE = 0, /* integer register */ _UVRSC_VFP = 1, /* vfp */ _UVRSC_FPA = 2, /* fpa */ _UVRSC_WMMXD = 3, /* Intel WMMX data register */ _UVRSC_WMMXC = 4 /* Intel WMMX control register */ } _Unwind_VRS_RegClass; typedef enum { _UVRSD_UINT32 = 0, _UVRSD_VFPX = 1, _UVRSD_FPAX = 2, _UVRSD_UINT64 = 3, _UVRSD_FLOAT = 4, _UVRSD_DOUBLE = 5 } _Unwind_VRS_DataRepresentation; typedef enum { _UVRSR_OK = 0, _UVRSR_NOT_IMPLEMENTED = 1, _UVRSR_FAILED = 2 } _Unwind_VRS_Result; /* Frame unwinding state. */ typedef struct { /* The current word (bytes packed msb first). */ _uw data; /* Pointer to the next word of data. */ _uw *next; /* The number of bytes left in this word. */ _uw8 bytes_left; /* The number of words pointed to by ptr. */ _uw8 words_left; } __gnu_unwind_state; typedef _Unwind_Reason_Code (*personality_routine) (_Unwind_State, _Unwind_Control_Block *, _Unwind_Context *); _Unwind_VRS_Result _Unwind_VRS_Set(_Unwind_Context *, _Unwind_VRS_RegClass, _uw, _Unwind_VRS_DataRepresentation, void *); _Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *, _Unwind_VRS_RegClass, _uw, _Unwind_VRS_DataRepresentation, void *); _Unwind_VRS_Result _Unwind_VRS_Pop(_Unwind_Context *, _Unwind_VRS_RegClass, _uw, _Unwind_VRS_DataRepresentation); /* Support functions for the PR. */ #define _Unwind_Exception _Unwind_Control_Block typedef char _Unwind_Exception_Class[8]; void * _Unwind_GetLanguageSpecificData (_Unwind_Context *); _Unwind_Ptr _Unwind_GetRegionStart (_Unwind_Context *); /* These two should never be used. */ _Unwind_Ptr _Unwind_GetDataRelBase (_Unwind_Context *); _Unwind_Ptr _Unwind_GetTextRelBase (_Unwind_Context *); /* Interface functions: */ _Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Control_Block *ucbp); void __attribute__((noreturn)) _Unwind_Resume(_Unwind_Control_Block *ucbp); _Unwind_Reason_Code _Unwind_Resume_or_Rethrow (_Unwind_Control_Block *ucbp); typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn) (int, _Unwind_Action, _Unwind_Exception_Class, _Unwind_Control_Block *, struct _Unwind_Context *, void *); _Unwind_Reason_Code _Unwind_ForcedUnwind (_Unwind_Control_Block *, _Unwind_Stop_Fn, void *); /* @@@ Use unwind data to perform a stack backtrace. The trace callback is called for every stack frame in the call chain, but no cleanup actions are performed. */ typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn) (_Unwind_Context *, void *); _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void*); _Unwind_Word _Unwind_GetCFA (struct _Unwind_Context *); void _Unwind_Complete(_Unwind_Control_Block *ucbp); void _Unwind_DeleteException (_Unwind_Exception *); _Unwind_Reason_Code __gnu_unwind_frame (_Unwind_Control_Block *, _Unwind_Context *); _Unwind_Reason_Code __gnu_unwind_execute (_Unwind_Context *, __gnu_unwind_state *); /* Decode an R_ARM_TARGET2 relocation. */ static inline _Unwind_Word _Unwind_decode_target2 (_Unwind_Word ptr) { _Unwind_Word tmp; tmp = *(_Unwind_Word *) ptr; /* Zero values are always NULL. */ if (!tmp) return 0; #if (defined(linux) && !defined(__uClinux__)) || defined(__NetBSD__) /* Pc-relative indirect. */ tmp += ptr; tmp = *(_Unwind_Word *) tmp; #elif defined(__symbian__) || defined(__uClinux__) /* Absolute pointer. Nothing more to do. */ #else /* Pc-relative pointer. */ tmp += ptr; #endif return tmp; } static inline _Unwind_Word _Unwind_GetGR (_Unwind_Context *context, int regno) { _uw val; _Unwind_VRS_Get (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val); return val; } /* Return the address of the instruction, not the actual IP value. */ #define _Unwind_GetIP(context) \ (_Unwind_GetGR (context, 15) & ~(_Unwind_Word)1) #define _Unwind_GetIPInfo(context, ip_before_insn) \ (*ip_before_insn = 0, _Unwind_GetGR (context, 15) & ~(_Unwind_Word)1) static inline void _Unwind_SetGR (_Unwind_Context *context, int regno, _Unwind_Word val) { _Unwind_VRS_Set (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val); } /* The dwarf unwinder doesn't understand arm/thumb state. We assume the landing pad uses the same instruction set as the call site. */ #define _Unwind_SetIP(context, val) \ _Unwind_SetGR (context, 15, val | (_Unwind_GetGR (context, 15) & 1)) /* leb128 type numbers have a potentially unlimited size. The target of the following definitions of _sleb128_t and _uleb128_t is to have efficient data types large enough to hold the leb128 type numbers used in the unwind code. */ typedef long _sleb128_t; typedef unsigned long _uleb128_t; #ifdef __cplusplus } /* extern "C" */ #endif #endif /* defined UNWIND_ARM_H */
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