/* Header file for the ARM EABI unwinder
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/* Header file for the ARM EABI unwinder
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Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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Contributed by Paul Brook
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Contributed by Paul Brook
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This file is free software; you can redistribute it and/or modify it
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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later version.
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In addition to the permissions in the GNU General Public License, the
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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the file, and distribution when not linked into a combine
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executable.)
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executable.)
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This file is distributed in the hope that it will be useful, but
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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Boston, MA 02110-1301, USA. */
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/* Language-independent unwinder header public defines. This contains both
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/* Language-independent unwinder header public defines. This contains both
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ABI defined objects, and GNU support routines. */
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ABI defined objects, and GNU support routines. */
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#ifndef UNWIND_ARM_H
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#ifndef UNWIND_ARM_H
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#define UNWIND_ARM_H
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#define UNWIND_ARM_H
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#define __ARM_EABI_UNWINDER__ 1
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#define __ARM_EABI_UNWINDER__ 1
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#ifdef __cplusplus
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#ifdef __cplusplus
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extern "C" {
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extern "C" {
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#endif
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#endif
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typedef unsigned _Unwind_Word __attribute__((__mode__(__word__)));
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typedef unsigned _Unwind_Word __attribute__((__mode__(__word__)));
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typedef signed _Unwind_Sword __attribute__((__mode__(__word__)));
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typedef signed _Unwind_Sword __attribute__((__mode__(__word__)));
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typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
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typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
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typedef unsigned _Unwind_Internal_Ptr __attribute__((__mode__(__pointer__)));
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typedef unsigned _Unwind_Internal_Ptr __attribute__((__mode__(__pointer__)));
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typedef _Unwind_Word _uw;
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typedef _Unwind_Word _uw;
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typedef unsigned _uw64 __attribute__((mode(__DI__)));
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typedef unsigned _uw64 __attribute__((mode(__DI__)));
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typedef unsigned _uw16 __attribute__((mode(__HI__)));
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typedef unsigned _uw16 __attribute__((mode(__HI__)));
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typedef unsigned _uw8 __attribute__((mode(__QI__)));
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typedef unsigned _uw8 __attribute__((mode(__QI__)));
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typedef enum
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typedef enum
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{
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{
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_URC_OK = 0, /* operation completed successfully */
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_URC_OK = 0, /* operation completed successfully */
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_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
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_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
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_URC_END_OF_STACK = 5,
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_URC_END_OF_STACK = 5,
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_URC_HANDLER_FOUND = 6,
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_URC_HANDLER_FOUND = 6,
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_URC_INSTALL_CONTEXT = 7,
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_URC_INSTALL_CONTEXT = 7,
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_URC_CONTINUE_UNWIND = 8,
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_URC_CONTINUE_UNWIND = 8,
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_URC_FAILURE = 9 /* unspecified failure of some kind */
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_URC_FAILURE = 9 /* unspecified failure of some kind */
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}
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}
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_Unwind_Reason_Code;
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_Unwind_Reason_Code;
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typedef enum
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typedef enum
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{
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{
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_US_VIRTUAL_UNWIND_FRAME = 0,
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_US_VIRTUAL_UNWIND_FRAME = 0,
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_US_UNWIND_FRAME_STARTING = 1,
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_US_UNWIND_FRAME_STARTING = 1,
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_US_UNWIND_FRAME_RESUME = 2,
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_US_UNWIND_FRAME_RESUME = 2,
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_US_ACTION_MASK = 3,
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_US_ACTION_MASK = 3,
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_US_FORCE_UNWIND = 8,
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_US_FORCE_UNWIND = 8,
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_US_END_OF_STACK = 16
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_US_END_OF_STACK = 16
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}
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}
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_Unwind_State;
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_Unwind_State;
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/* Provided only for for compatibility with existing code. */
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/* Provided only for for compatibility with existing code. */
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typedef int _Unwind_Action;
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typedef int _Unwind_Action;
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#define _UA_SEARCH_PHASE 1
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#define _UA_SEARCH_PHASE 1
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#define _UA_CLEANUP_PHASE 2
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#define _UA_CLEANUP_PHASE 2
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#define _UA_HANDLER_FRAME 4
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#define _UA_HANDLER_FRAME 4
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#define _UA_FORCE_UNWIND 8
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#define _UA_FORCE_UNWIND 8
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#define _UA_END_OF_STACK 16
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#define _UA_END_OF_STACK 16
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#define _URC_NO_REASON _URC_OK
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#define _URC_NO_REASON _URC_OK
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typedef struct _Unwind_Control_Block _Unwind_Control_Block;
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typedef struct _Unwind_Control_Block _Unwind_Control_Block;
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typedef struct _Unwind_Context _Unwind_Context;
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typedef struct _Unwind_Context _Unwind_Context;
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typedef _uw _Unwind_EHT_Header;
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typedef _uw _Unwind_EHT_Header;
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/* UCB: */
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/* UCB: */
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struct _Unwind_Control_Block
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struct _Unwind_Control_Block
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{
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{
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char exception_class[8];
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char exception_class[8];
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void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block *);
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void (*exception_cleanup)(_Unwind_Reason_Code, _Unwind_Control_Block *);
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/* Unwinder cache, private fields for the unwinder's use */
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/* Unwinder cache, private fields for the unwinder's use */
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struct
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struct
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{
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{
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_uw reserved1; /* Forced unwind stop fn, 0 if not forced */
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_uw reserved1; /* Forced unwind stop fn, 0 if not forced */
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_uw reserved2; /* Personality routine address */
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_uw reserved2; /* Personality routine address */
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_uw reserved3; /* Saved callsite address */
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_uw reserved3; /* Saved callsite address */
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_uw reserved4; /* Forced unwind stop arg */
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_uw reserved4; /* Forced unwind stop arg */
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_uw reserved5;
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_uw reserved5;
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}
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}
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unwinder_cache;
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unwinder_cache;
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/* Propagation barrier cache (valid after phase 1): */
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/* Propagation barrier cache (valid after phase 1): */
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struct
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struct
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{
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{
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_uw sp;
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_uw sp;
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_uw bitpattern[5];
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_uw bitpattern[5];
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}
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}
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barrier_cache;
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barrier_cache;
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/* Cleanup cache (preserved over cleanup): */
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/* Cleanup cache (preserved over cleanup): */
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struct
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struct
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{
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{
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_uw bitpattern[4];
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_uw bitpattern[4];
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}
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}
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cleanup_cache;
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cleanup_cache;
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/* Pr cache (for pr's benefit): */
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/* Pr cache (for pr's benefit): */
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struct
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struct
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{
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{
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_uw fnstart; /* function start address */
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_uw fnstart; /* function start address */
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_Unwind_EHT_Header *ehtp; /* pointer to EHT entry header word */
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_Unwind_EHT_Header *ehtp; /* pointer to EHT entry header word */
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_uw additional; /* additional data */
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_uw additional; /* additional data */
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_uw reserved1;
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_uw reserved1;
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}
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}
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pr_cache;
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pr_cache;
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long long int :0; /* Force alignment to 8-byte boundary */
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long long int :0; /* Force alignment to 8-byte boundary */
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};
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};
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/* Virtual Register Set*/
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/* Virtual Register Set*/
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typedef enum
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typedef enum
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{
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{
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_UVRSC_CORE = 0, /* integer register */
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_UVRSC_CORE = 0, /* integer register */
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_UVRSC_VFP = 1, /* vfp */
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_UVRSC_VFP = 1, /* vfp */
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_UVRSC_FPA = 2, /* fpa */
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_UVRSC_FPA = 2, /* fpa */
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_UVRSC_WMMXD = 3, /* Intel WMMX data register */
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_UVRSC_WMMXD = 3, /* Intel WMMX data register */
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_UVRSC_WMMXC = 4 /* Intel WMMX control register */
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_UVRSC_WMMXC = 4 /* Intel WMMX control register */
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}
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}
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_Unwind_VRS_RegClass;
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_Unwind_VRS_RegClass;
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typedef enum
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typedef enum
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{
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{
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_UVRSD_UINT32 = 0,
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_UVRSD_UINT32 = 0,
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_UVRSD_VFPX = 1,
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_UVRSD_VFPX = 1,
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_UVRSD_FPAX = 2,
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_UVRSD_FPAX = 2,
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_UVRSD_UINT64 = 3,
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_UVRSD_UINT64 = 3,
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_UVRSD_FLOAT = 4,
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_UVRSD_FLOAT = 4,
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_UVRSD_DOUBLE = 5
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_UVRSD_DOUBLE = 5
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}
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}
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_Unwind_VRS_DataRepresentation;
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_Unwind_VRS_DataRepresentation;
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typedef enum
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typedef enum
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{
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{
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_UVRSR_OK = 0,
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_UVRSR_OK = 0,
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_UVRSR_NOT_IMPLEMENTED = 1,
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_UVRSR_NOT_IMPLEMENTED = 1,
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_UVRSR_FAILED = 2
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_UVRSR_FAILED = 2
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}
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}
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_Unwind_VRS_Result;
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_Unwind_VRS_Result;
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/* Frame unwinding state. */
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/* Frame unwinding state. */
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typedef struct
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typedef struct
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{
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{
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/* The current word (bytes packed msb first). */
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/* The current word (bytes packed msb first). */
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_uw data;
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_uw data;
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/* Pointer to the next word of data. */
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/* Pointer to the next word of data. */
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_uw *next;
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_uw *next;
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/* The number of bytes left in this word. */
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/* The number of bytes left in this word. */
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_uw8 bytes_left;
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_uw8 bytes_left;
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/* The number of words pointed to by ptr. */
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/* The number of words pointed to by ptr. */
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_uw8 words_left;
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_uw8 words_left;
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}
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}
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__gnu_unwind_state;
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__gnu_unwind_state;
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typedef _Unwind_Reason_Code (*personality_routine) (_Unwind_State,
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typedef _Unwind_Reason_Code (*personality_routine) (_Unwind_State,
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_Unwind_Control_Block *, _Unwind_Context *);
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_Unwind_Control_Block *, _Unwind_Context *);
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_Unwind_VRS_Result _Unwind_VRS_Set(_Unwind_Context *, _Unwind_VRS_RegClass,
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_Unwind_VRS_Result _Unwind_VRS_Set(_Unwind_Context *, _Unwind_VRS_RegClass,
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_uw, _Unwind_VRS_DataRepresentation,
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_uw, _Unwind_VRS_DataRepresentation,
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void *);
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void *);
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_Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *, _Unwind_VRS_RegClass,
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_Unwind_VRS_Result _Unwind_VRS_Get(_Unwind_Context *, _Unwind_VRS_RegClass,
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_uw, _Unwind_VRS_DataRepresentation,
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_uw, _Unwind_VRS_DataRepresentation,
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void *);
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void *);
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_Unwind_VRS_Result _Unwind_VRS_Pop(_Unwind_Context *, _Unwind_VRS_RegClass,
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_Unwind_VRS_Result _Unwind_VRS_Pop(_Unwind_Context *, _Unwind_VRS_RegClass,
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_uw, _Unwind_VRS_DataRepresentation);
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_uw, _Unwind_VRS_DataRepresentation);
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/* Support functions for the PR. */
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/* Support functions for the PR. */
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#define _Unwind_Exception _Unwind_Control_Block
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#define _Unwind_Exception _Unwind_Control_Block
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typedef char _Unwind_Exception_Class[8];
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typedef char _Unwind_Exception_Class[8];
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void * _Unwind_GetLanguageSpecificData (_Unwind_Context *);
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void * _Unwind_GetLanguageSpecificData (_Unwind_Context *);
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_Unwind_Ptr _Unwind_GetRegionStart (_Unwind_Context *);
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_Unwind_Ptr _Unwind_GetRegionStart (_Unwind_Context *);
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/* These two should never be used. */
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/* These two should never be used. */
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_Unwind_Ptr _Unwind_GetDataRelBase (_Unwind_Context *);
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_Unwind_Ptr _Unwind_GetDataRelBase (_Unwind_Context *);
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_Unwind_Ptr _Unwind_GetTextRelBase (_Unwind_Context *);
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_Unwind_Ptr _Unwind_GetTextRelBase (_Unwind_Context *);
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/* Interface functions: */
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/* Interface functions: */
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_Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Control_Block *ucbp);
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_Unwind_Reason_Code _Unwind_RaiseException(_Unwind_Control_Block *ucbp);
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void __attribute__((noreturn)) _Unwind_Resume(_Unwind_Control_Block *ucbp);
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void __attribute__((noreturn)) _Unwind_Resume(_Unwind_Control_Block *ucbp);
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_Unwind_Reason_Code _Unwind_Resume_or_Rethrow (_Unwind_Control_Block *ucbp);
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_Unwind_Reason_Code _Unwind_Resume_or_Rethrow (_Unwind_Control_Block *ucbp);
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typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
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typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)
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(int, _Unwind_Action, _Unwind_Exception_Class,
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(int, _Unwind_Action, _Unwind_Exception_Class,
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_Unwind_Control_Block *, struct _Unwind_Context *, void *);
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_Unwind_Control_Block *, struct _Unwind_Context *, void *);
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_Unwind_Reason_Code _Unwind_ForcedUnwind (_Unwind_Control_Block *,
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_Unwind_Reason_Code _Unwind_ForcedUnwind (_Unwind_Control_Block *,
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_Unwind_Stop_Fn, void *);
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_Unwind_Stop_Fn, void *);
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_Unwind_Word _Unwind_GetCFA (struct _Unwind_Context *);
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_Unwind_Word _Unwind_GetCFA (struct _Unwind_Context *);
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void _Unwind_Complete(_Unwind_Control_Block *ucbp);
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void _Unwind_Complete(_Unwind_Control_Block *ucbp);
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void _Unwind_DeleteException (_Unwind_Exception *);
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void _Unwind_DeleteException (_Unwind_Exception *);
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_Unwind_Reason_Code __gnu_unwind_frame (_Unwind_Control_Block *,
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_Unwind_Reason_Code __gnu_unwind_frame (_Unwind_Control_Block *,
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_Unwind_Context *);
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_Unwind_Context *);
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_Unwind_Reason_Code __gnu_unwind_execute (_Unwind_Context *,
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_Unwind_Reason_Code __gnu_unwind_execute (_Unwind_Context *,
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__gnu_unwind_state *);
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__gnu_unwind_state *);
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/* Decode an R_ARM_TARGET2 relocation. */
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/* Decode an R_ARM_TARGET2 relocation. */
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static inline _Unwind_Word
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static inline _Unwind_Word
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_Unwind_decode_target2 (_Unwind_Word ptr)
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_Unwind_decode_target2 (_Unwind_Word ptr)
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{
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{
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_Unwind_Word tmp;
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_Unwind_Word tmp;
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tmp = *(_Unwind_Word *) ptr;
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tmp = *(_Unwind_Word *) ptr;
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/* Zero values are always NULL. */
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/* Zero values are always NULL. */
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if (!tmp)
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if (!tmp)
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return 0;
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return 0;
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#if defined(linux) || defined(__NetBSD__)
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#if defined(linux) || defined(__NetBSD__)
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/* Pc-relative indirect. */
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/* Pc-relative indirect. */
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tmp += ptr;
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tmp += ptr;
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tmp = *(_Unwind_Word *) tmp;
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tmp = *(_Unwind_Word *) tmp;
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#elif defined(__symbian__)
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#elif defined(__symbian__)
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/* Absolute pointer. Nothing more to do. */
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/* Absolute pointer. Nothing more to do. */
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#else
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#else
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/* Pc-relative pointer. */
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/* Pc-relative pointer. */
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tmp += ptr;
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tmp += ptr;
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#endif
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#endif
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return tmp;
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return tmp;
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}
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}
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static inline _Unwind_Word
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static inline _Unwind_Word
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_Unwind_GetGR (_Unwind_Context *context, int regno)
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_Unwind_GetGR (_Unwind_Context *context, int regno)
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{
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{
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_uw val;
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_uw val;
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_Unwind_VRS_Get (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val);
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_Unwind_VRS_Get (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val);
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return val;
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return val;
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}
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}
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/* Return the address of the instruction, not the actual IP value. */
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/* Return the address of the instruction, not the actual IP value. */
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#define _Unwind_GetIP(context) \
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#define _Unwind_GetIP(context) \
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(_Unwind_GetGR (context, 15) & ~(_Unwind_Word)1)
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(_Unwind_GetGR (context, 15) & ~(_Unwind_Word)1)
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#define _Unwind_GetIPInfo(context, ip_before_insn) \
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#define _Unwind_GetIPInfo(context, ip_before_insn) \
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(*ip_before_insn = 0, _Unwind_GetGR (context, 15) & ~(_Unwind_Word)1)
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(*ip_before_insn = 0, _Unwind_GetGR (context, 15) & ~(_Unwind_Word)1)
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static inline void
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static inline void
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_Unwind_SetGR (_Unwind_Context *context, int regno, _Unwind_Word val)
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_Unwind_SetGR (_Unwind_Context *context, int regno, _Unwind_Word val)
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{
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{
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_Unwind_VRS_Set (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val);
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_Unwind_VRS_Set (context, _UVRSC_CORE, regno, _UVRSD_UINT32, &val);
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}
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}
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/* The dwarf unwinder doesn't understand arm/thumb state. We assume the
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/* The dwarf unwinder doesn't understand arm/thumb state. We assume the
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landing pad uses the same instruction set as the call site. */
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landing pad uses the same instruction set as the call site. */
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#define _Unwind_SetIP(context, val) \
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#define _Unwind_SetIP(context, val) \
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_Unwind_SetGR (context, 15, val | (_Unwind_GetGR (context, 15) & 1))
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_Unwind_SetGR (context, 15, val | (_Unwind_GetGR (context, 15) & 1))
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#ifdef __cplusplus
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#ifdef __cplusplus
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} /* extern "C" */
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} /* extern "C" */
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#endif
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#endif
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#endif /* defined UNWIND_ARM_H */
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#endif /* defined UNWIND_ARM_H */
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