Differences From Artifact [85159653ef]:
- File src/runtime/exception.m — part of check-in [3b97fc3cd9] at 2014-01-04 00:24:08 on branch trunk — Update copyright. (user: js, size: 15257) [annotate] [blame] [check-ins using]
To Artifact [02a3674deb]:
- File
src/runtime/exception.m
— part of check-in
[d7883de826]
at
2014-02-12 15:36:26
on branch trunk
— Add support for SEH exceptions
Does not work yet due to a GCC bug. I already found the bug and also
have a fix for it, but it needs to get upstreamed. (user: js, size: 16083) [annotate] [blame] [check-ins using]
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14 15 16 17 18 19 20 21 22 23 24 25 26 27 | * file. */ #include "config.h" #include <stdlib.h> #include <string.h> #import "runtime.h" static const uint64_t objc_exception_class = 0x474E55434F424A43; /* GNUCOBJC */ #define _UA_SEARCH_PHASE 0x01 #define _UA_CLEANUP_PHASE 0x02 | > > > > | 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | * file. */ #include "config.h" #include <stdlib.h> #include <string.h> #ifdef HAVE_SEH_EXCEPTIONS # include <windows.h> #endif #import "runtime.h" static const uint64_t objc_exception_class = 0x474E55434F424A43; /* GNUCOBJC */ #define _UA_SEARCH_PHASE 0x01 #define _UA_CLEANUP_PHASE 0x02 |
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88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | uint32_t fnstart; uint32_t *ehtp; uint32_t additional; uint32_t reserved1; } pr_cache; long long int : 0; #else /* * The Itanium Exception ABI says to have those and never touch * them. */ uint64_t private1, private2; #endif } exception; id object; #if !defined(__arm__) && !defined(__ARM__) uintptr_t landingpad; intptr_t filter; #endif | > > > > | 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | uint32_t fnstart; uint32_t *ehtp; uint32_t additional; uint32_t reserved1; } pr_cache; long long int : 0; #else # ifdef HAVE_SEH_EXCEPTIONS uint64_t private[6]; # else /* * The Itanium Exception ABI says to have those and never touch * them. */ uint64_t private1, private2; # endif #endif } exception; id object; #if !defined(__arm__) && !defined(__ARM__) uintptr_t landingpad; intptr_t filter; #endif |
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170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | #else # define CONTINUE_UNWIND return _URC_CONTINUE_UNWIND extern uintptr_t _Unwind_GetIP(struct _Unwind_Context*); extern void _Unwind_SetIP(struct _Unwind_Context*, uintptr_t); extern void _Unwind_SetGR(struct _Unwind_Context*, int, uintptr_t); #endif #if defined(HAVE_DWARF_EXCEPTIONS) # define PERSONALITY __gnu_objc_personality_v0 # define RAISE_EXCEPTION _Unwind_RaiseException #elif defined(HAVE_SJLJ_EXCEPTIONS) # define PERSONALITY __gnu_objc_personality_sj0 # define RAISE_EXCEPTION _Unwind_SjLj_RaiseException #else # error Unknown exception type! #endif static objc_uncaught_exception_handler uncaught_exception_handler; static uint64_t | > > > > > > > > > | 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 |
#else
# define CONTINUE_UNWIND return _URC_CONTINUE_UNWIND
extern uintptr_t _Unwind_GetIP(struct _Unwind_Context*);
extern void _Unwind_SetIP(struct _Unwind_Context*, uintptr_t);
extern void _Unwind_SetGR(struct _Unwind_Context*, int, uintptr_t);
#endif
#ifdef HAVE_SEH_EXCEPTIONS
extern EXCEPTION_DISPOSITION _GCC_specific_handler(PEXCEPTION_RECORD, void*,
PCONTEXT, PDISPATCHER_CONTEXT, _Unwind_Reason_Code(*)(int, int, uint64_t,
struct _Unwind_Exception*, struct _Unwind_Context*));
#endif
#if defined(HAVE_DWARF_EXCEPTIONS)
# define PERSONALITY __gnu_objc_personality_v0
# define RAISE_EXCEPTION _Unwind_RaiseException
#elif defined(HAVE_SJLJ_EXCEPTIONS)
# define PERSONALITY __gnu_objc_personality_sj0
# define RAISE_EXCEPTION _Unwind_SjLj_RaiseException
#elif defined(HAVE_SEH_EXCEPTIONS)
# define PERSONALITY gnu_objc_personality
# define RAISE_EXCEPTION _Unwind_RaiseException
#else
# error Unknown exception type!
#endif
static objc_uncaught_exception_handler uncaught_exception_handler;
static uint64_t
|
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512 513 514 515 516 517 518 519 520 521 522 523 524 525 |
CONTINUE_UNWIND;
default:
return _URC_FAILURE;
}
_Unwind_SetGR(ctx, 12, (uintptr_t)ex);
#else
_Unwind_Reason_Code
PERSONALITY(int version, int actions, uint64_t ex_class,
struct _Unwind_Exception *ex, struct _Unwind_Context *ctx)
{
#endif
struct objc_exception *e = (struct objc_exception*)ex;
bool foreign = (ex_class != objc_exception_class);
| > > > | 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 |
CONTINUE_UNWIND;
default:
return _URC_FAILURE;
}
_Unwind_SetGR(ctx, 12, (uintptr_t)ex);
#else
# ifdef HAVE_SEH_EXCEPTIONS
static
# endif
_Unwind_Reason_Code
PERSONALITY(int version, int actions, uint64_t ex_class,
struct _Unwind_Exception *ex, struct _Unwind_Context *ctx)
{
#endif
struct objc_exception *e = (struct objc_exception*)ex;
bool foreign = (ex_class != objc_exception_class);
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636 637 638 639 640 641 642 |
objc_setUncaughtExceptionHandler(objc_uncaught_exception_handler handler)
{
objc_uncaught_exception_handler old = uncaught_exception_handler;
uncaught_exception_handler = handler;
return old;
}
| > > > > > > > > > > | 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 |
objc_setUncaughtExceptionHandler(objc_uncaught_exception_handler handler)
{
objc_uncaught_exception_handler old = uncaught_exception_handler;
uncaught_exception_handler = handler;
return old;
}
#ifdef HAVE_SEH_EXCEPTIONS
EXCEPTION_DISPOSITION
__gnu_objc_personality_seh0(PEXCEPTION_RECORD ms_exc, void *this_frame,
PCONTEXT ms_orig_context, PDISPATCHER_CONTEXT ms_disp)
{
return _GCC_specific_handler(ms_exc, this_frame, ms_orig_context,
ms_disp, PERSONALITY);
}
#endif
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