sdk/build-tools/26.0.2/renderscript/clang-include/unwind.h

   1 /*===---- unwind.h - Stack unwinding ----------------------------------------===
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a copy
   4  * of this software and associated documentation files (the "Software"), to deal
   5  * in the Software without restriction, including without limitation the rights
   6  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7  * copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in
  11  * all copies or substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  19  * THE SOFTWARE.
  20  *
  21  *===-----------------------------------------------------------------------===
  22  */
  23
  24 /* See "Data Definitions for libgcc_s" in the Linux Standard Base.*/
  25
  26 #ifndef __CLANG_UNWIND_H
  27 #define __CLANG_UNWIND_H
  28
  29 #if defined(__APPLE__) && __has_include_next(<unwind.h>)
  30 /* Darwin (from 11.x on) provide an unwind.h. If that's available,
  31  * use it. libunwind wraps some of its definitions in #ifdef _GNU_SOURCE,
  32  * so define that around the include.*/
  33 # ifndef _GNU_SOURCE
  34 #  define _SHOULD_UNDEFINE_GNU_SOURCE
  35 #  define _GNU_SOURCE
  36 # endif
  37 // libunwind's unwind.h reflects the current visibility.  However, Mozilla
  38 // builds with -fvisibility=hidden and relies on gcc's unwind.h to reset the
  39 // visibility to default and export its contents.  gcc also allows users to
  40 // override its override by #defining HIDE_EXPORTS (but note, this only obeys
  41 // the user's -fvisibility setting; it doesn't hide any exports on its own).  We
  42 // imitate gcc's header here:
  43 # ifdef HIDE_EXPORTS
  44 #  include_next <unwind.h>
  45 # else
  46 #  pragma GCC visibility push(default)
  47 #  include_next <unwind.h>
  48 #  pragma GCC visibility pop
  49 # endif
  50 # ifdef _SHOULD_UNDEFINE_GNU_SOURCE
  51 #  undef _GNU_SOURCE
  52 #  undef _SHOULD_UNDEFINE_GNU_SOURCE
  53 # endif
  54 #else
  55
  56 #include <stdint.h>
  57
  58 #ifdef __cplusplus
  59 extern "C" {
  60 #endif
  61
  62 /* It is a bit strange for a header to play with the visibility of the
  63    symbols it declares, but this matches gcc's behavior and some programs
  64    depend on it */
  65 #ifndef HIDE_EXPORTS
  66 #pragma GCC visibility push(default)
  67 #endif
  68
  69 typedef uintptr_t _Unwind_Word;
  70 typedef intptr_t _Unwind_Sword;
  71 typedef uintptr_t _Unwind_Ptr;
  72 typedef uintptr_t _Unwind_Internal_Ptr;
  73 typedef uint64_t _Unwind_Exception_Class;
  74
  75 typedef intptr_t _sleb128_t;
  76 typedef uintptr_t _uleb128_t;
  77
  78 struct _Unwind_Context;
  79 struct _Unwind_Exception;
  80 typedef enum {
  81   _URC_NO_REASON = 0,
  82 #if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \
  83     !defined(__ARM_DWARF_EH__)
  84   _URC_OK = 0, /* used by ARM EHABI */
  85 #endif
  86   _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
  87
  88   _URC_FATAL_PHASE2_ERROR = 2,
  89   _URC_FATAL_PHASE1_ERROR = 3,
  90   _URC_NORMAL_STOP = 4,
  91
  92   _URC_END_OF_STACK = 5,
  93   _URC_HANDLER_FOUND = 6,
  94   _URC_INSTALL_CONTEXT = 7,
  95   _URC_CONTINUE_UNWIND = 8,
  96 #if defined(__arm__) && !defined(__USING_SJLJ_EXCEPTIONS__) && \
  97     !defined(__ARM_DWARF_EH__)
  98   _URC_FAILURE = 9 /* used by ARM EHABI */
  99 #endif
 100 } _Unwind_Reason_Code;
 101
 102 typedef enum {
 103   _UA_SEARCH_PHASE = 1,
 104   _UA_CLEANUP_PHASE = 2,
 105
 106   _UA_HANDLER_FRAME = 4,
 107   _UA_FORCE_UNWIND = 8,
 108   _UA_END_OF_STACK = 16 /* gcc extension to C++ ABI */
 109 } _Unwind_Action;
 110
 111 typedef void (*_Unwind_Exception_Cleanup_Fn)(_Unwind_Reason_Code,
 112                                              struct _Unwind_Exception *);
 113
 114 struct _Unwind_Exception {
 115   _Unwind_Exception_Class exception_class;
 116   _Unwind_Exception_Cleanup_Fn exception_cleanup;
 117   _Unwind_Word private_1;
 118   _Unwind_Word private_2;
 119   /* The Itanium ABI requires that _Unwind_Exception objects are "double-word
 120    * aligned".  GCC has interpreted this to mean "use the maximum useful
 121    * alignment for the target"; so do we. */
 122 } __attribute__((__aligned__));
 123
 124 typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)(int, _Unwind_Action,
 125                                                _Unwind_Exception_Class,
 126                                                struct _Unwind_Exception *,
 127                                                struct _Unwind_Context *,
 128                                                void *);
 129
 130 typedef _Unwind_Reason_Code (*_Unwind_Personality_Fn)(
 131     int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *,
 132     struct _Unwind_Context *);
 133 typedef _Unwind_Personality_Fn __personality_routine;
 134
 135 typedef _Unwind_Reason_Code (*_Unwind_Trace_Fn)(struct _Unwind_Context *,
 136                                                 void *);
 137
 138 #if defined(__arm__) && !defined(__APPLE__)
 139
 140 typedef enum {
 141   _UVRSC_CORE = 0,        /* integer register */
 142   _UVRSC_VFP = 1,         /* vfp */
 143   _UVRSC_WMMXD = 3,       /* Intel WMMX data register */
 144   _UVRSC_WMMXC = 4        /* Intel WMMX control register */
 145 } _Unwind_VRS_RegClass;
 146
 147 typedef enum {
 148   _UVRSD_UINT32 = 0,
 149   _UVRSD_VFPX = 1,
 150   _UVRSD_UINT64 = 3,
 151   _UVRSD_FLOAT = 4,
 152   _UVRSD_DOUBLE = 5
 153 } _Unwind_VRS_DataRepresentation;
 154
 155 typedef enum {
 156   _UVRSR_OK = 0,
 157   _UVRSR_NOT_IMPLEMENTED = 1,
 158   _UVRSR_FAILED = 2
 159 } _Unwind_VRS_Result;
 160
 161 #if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__ARM_DWARF_EH__)
 162 typedef uint32_t _Unwind_State;
 163 #define _US_VIRTUAL_UNWIND_FRAME  ((_Unwind_State)0)
 164 #define _US_UNWIND_FRAME_STARTING ((_Unwind_State)1)
 165 #define _US_UNWIND_FRAME_RESUME   ((_Unwind_State)2)
 166 #define _US_ACTION_MASK           ((_Unwind_State)3)
 167 #define _US_FORCE_UNWIND          ((_Unwind_State)8)
 168 #endif
 169
 170 _Unwind_VRS_Result _Unwind_VRS_Get(struct _Unwind_Context *__context,
 171   _Unwind_VRS_RegClass __regclass,
 172   uint32_t __regno,
 173   _Unwind_VRS_DataRepresentation __representation,
 174   void *__valuep);
 175
 176 _Unwind_VRS_Result _Unwind_VRS_Set(struct _Unwind_Context *__context,
 177   _Unwind_VRS_RegClass __regclass,
 178   uint32_t __regno,
 179   _Unwind_VRS_DataRepresentation __representation,
 180   void *__valuep);
 181
 182 static __inline__
 183 _Unwind_Word _Unwind_GetGR(struct _Unwind_Context *__context, int __index) {
 184   _Unwind_Word __value;
 185   _Unwind_VRS_Get(__context, _UVRSC_CORE, __index, _UVRSD_UINT32, &__value);
 186   return __value;
 187 }
 188
 189 static __inline__
 190 void _Unwind_SetGR(struct _Unwind_Context *__context, int __index,
 191                    _Unwind_Word __value) {
 192   _Unwind_VRS_Set(__context, _UVRSC_CORE, __index, _UVRSD_UINT32, &__value);
 193 }
 194
 195 static __inline__
 196 _Unwind_Word _Unwind_GetIP(struct _Unwind_Context *__context) {
 197   _Unwind_Word __ip = _Unwind_GetGR(__context, 15);
 198   return __ip & ~(_Unwind_Word)(0x1); /* Remove thumb mode bit. */
 199 }
 200
 201 static __inline__
 202 void _Unwind_SetIP(struct _Unwind_Context *__context, _Unwind_Word __value) {
 203   _Unwind_Word __thumb_mode_bit = _Unwind_GetGR(__context, 15) & 0x1;
 204   _Unwind_SetGR(__context, 15, __value | __thumb_mode_bit);
 205 }
 206 #else
 207 _Unwind_Word _Unwind_GetGR(struct _Unwind_Context *, int);
 208 void _Unwind_SetGR(struct _Unwind_Context *, int, _Unwind_Word);
 209
 210 _Unwind_Word _Unwind_GetIP(struct _Unwind_Context *);
 211 void _Unwind_SetIP(struct _Unwind_Context *, _Unwind_Word);
 212 #endif
 213
 214
 215 _Unwind_Word _Unwind_GetIPInfo(struct _Unwind_Context *, int *);
 216
 217 _Unwind_Word _Unwind_GetCFA(struct _Unwind_Context *);
 218
 219 _Unwind_Word _Unwind_GetBSP(struct _Unwind_Context *);
 220
 221 void *_Unwind_GetLanguageSpecificData(struct _Unwind_Context *);
 222
 223 _Unwind_Ptr _Unwind_GetRegionStart(struct _Unwind_Context *);
 224
 225 /* DWARF EH functions; currently not available on Darwin/ARM */
 226 #if !defined(__APPLE__) || !defined(__arm__)
 227
 228 _Unwind_Reason_Code _Unwind_RaiseException(struct _Unwind_Exception *);
 229 _Unwind_Reason_Code _Unwind_ForcedUnwind(struct _Unwind_Exception *,
 230                                          _Unwind_Stop_Fn, void *);
 231 void _Unwind_DeleteException(struct _Unwind_Exception *);
 232 void _Unwind_Resume(struct _Unwind_Exception *);
 233 _Unwind_Reason_Code _Unwind_Resume_or_Rethrow(struct _Unwind_Exception *);
 234
 235 #endif
 236
 237 _Unwind_Reason_Code _Unwind_Backtrace(_Unwind_Trace_Fn, void *);
 238
 239 /* setjmp(3)/longjmp(3) stuff */
 240 typedef struct SjLj_Function_Context *_Unwind_FunctionContext_t;
 241
 242 void _Unwind_SjLj_Register(_Unwind_FunctionContext_t);
 243 void _Unwind_SjLj_Unregister(_Unwind_FunctionContext_t);
 244 _Unwind_Reason_Code _Unwind_SjLj_RaiseException(struct _Unwind_Exception *);
 245 _Unwind_Reason_Code _Unwind_SjLj_ForcedUnwind(struct _Unwind_Exception *,
 246                                               _Unwind_Stop_Fn, void *);
 247 void _Unwind_SjLj_Resume(struct _Unwind_Exception *);
 248 _Unwind_Reason_Code _Unwind_SjLj_Resume_or_Rethrow(struct _Unwind_Exception *);
 249
 250 void *_Unwind_FindEnclosingFunction(void *);
 251
 252 #ifdef __APPLE__
 253
 254 _Unwind_Ptr _Unwind_GetDataRelBase(struct _Unwind_Context *)
 255     __attribute__((__unavailable__));
 256 _Unwind_Ptr _Unwind_GetTextRelBase(struct _Unwind_Context *)
 257     __attribute__((__unavailable__));
 258
 259 /* Darwin-specific functions */
 260 void __register_frame(const void *);
 261 void __deregister_frame(const void *);
 262
 263 struct dwarf_eh_bases {
 264   uintptr_t tbase;
 265   uintptr_t dbase;
 266   uintptr_t func;
 267 };
 268 void *_Unwind_Find_FDE(const void *, struct dwarf_eh_bases *);
 269
 270 void __register_frame_info_bases(const void *, void *, void *, void *)
 271   __attribute__((__unavailable__));
 272 void __register_frame_info(const void *, void *) __attribute__((__unavailable__));
 273 void __register_frame_info_table_bases(const void *, void*, void *, void *)
 274   __attribute__((__unavailable__));
 275 void __register_frame_info_table(const void *, void *)
 276   __attribute__((__unavailable__));
 277 void __register_frame_table(const void *) __attribute__((__unavailable__));
 278 void __deregister_frame_info(const void *) __attribute__((__unavailable__));
 279 void __deregister_frame_info_bases(const void *)__attribute__((__unavailable__));
 280
 281 #else
 282
 283 _Unwind_Ptr _Unwind_GetDataRelBase(struct _Unwind_Context *);
 284 _Unwind_Ptr _Unwind_GetTextRelBase(struct _Unwind_Context *);
 285
 286 #endif
 287
 288
 289 #ifndef HIDE_EXPORTS
 290 #pragma GCC visibility pop
 291 #endif
 292
 293 #ifdef __cplusplus
 294 }
 295 #endif
 296
 297 #endif
 298
 299 #endif /* __CLANG_UNWIND_H */