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#include <string.h>
#ifdef HAVE_SEH_EXCEPTIONS
# include <windows.h>
#endif
#import "runtime.h"
#import "macros.h"
#if defined(HAVE_DWARF_EXCEPTIONS)
# define PERSONALITY __gnu_objc_personality_v0
#elif defined(HAVE_SJLJ_EXCEPTIONS)
# define PERSONALITY __gnu_objc_personality_sj0
# define _Unwind_RaiseException _Unwind_SjLj_RaiseException
# define __builtin_eh_return_data_regno(i) (i)
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_URC_FAILURE = 9
} _Unwind_Reason_Code;
struct objc_exception {
struct _Unwind_Exception {
uint64_t class;
void (*cleanup)(_Unwind_Reason_Code, struct _Unwind_Exception*);
#if defined(__arm__) || defined(__ARM__)
#ifdef OF_ARM
/* From "Exception Handling ABI for the ARM(R) Architecture" */
struct {
uint32_t reserved1, reserved2, reserved3, reserved4;
uint32_t reserved;
} unwinder_cache;
struct {
uint32_t sp;
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* them.
*/
uint64_t private1, private2;
# endif
#endif
} exception;
id object;
#if !defined(__arm__) && !defined(__ARM__)
#ifndef OF_ARM
uintptr_t landingpad;
intptr_t filter;
#endif
};
struct lsda {
uintptr_t region_start, landingpads_start;
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extern _Unwind_Reason_Code _Unwind_RaiseException(struct _Unwind_Exception*);
extern void _Unwind_DeleteException(struct _Unwind_Exception*);
extern void* _Unwind_GetLanguageSpecificData(struct _Unwind_Context*);
extern uintptr_t _Unwind_GetRegionStart(struct _Unwind_Context*);
extern uintptr_t _Unwind_GetDataRelBase(struct _Unwind_Context*);
extern uintptr_t _Unwind_GetTextRelBase(struct _Unwind_Context*);
#if defined(__arm__) || defined(__ARM__)
#ifdef OF_ARM
extern _Unwind_Reason_Code __gnu_unwind_frame(struct _Unwind_Exception*,
struct _Unwind_Context*);
extern int _Unwind_VRS_Get(struct _Unwind_Context*, int, uint32_t, int, void*);
extern int _Unwind_VRS_Set(struct _Unwind_Context*, int, uint32_t, int, void*);
# define CONTINUE_UNWIND \
{ \
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abort();
}
#undef READ
return value;
}
#if !defined(__arm__) && !defined(__ARM__)
#ifndef OF_ARM
static uint64_t
resolve_value(uint64_t value, uint8_t enc, const uint8_t *start, uint64_t base)
{
if (value == 0)
return 0;
value += ((enc & 0x70) == DW_EH_PE_pcrel ? (uintptr_t)start : base);
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if (filter > 0 && !(actions & _UA_FORCE_UNWIND) && !foreign) {
Class class;
const char *className;
uintptr_t c;
const uint8_t *tmp;
#if defined(__arm__) || defined(__ARM__)
#ifdef OF_ARM
tmp = lsda->typestable - (filter * 4);
c = *(uintptr_t*)(void*)tmp;
if (c != 0) {
c += (uintptr_t)tmp;
# if defined(__linux__) || defined(__NetBSD__)
# if defined(OF_LINUX) || defined(OF_NETBSD)
c = *(uintptr_t*)c;
# endif
}
#else
uintptr_t i;
i = filter * size_for_encoding(lsda->typestable_enc);
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else
abort();
} while (displacement != 0);
return 0;
}
#if defined(__arm__) || defined(__ARM__)
#ifdef OF_ARM
_Unwind_Reason_Code
PERSONALITY(uint32_t state, struct _Unwind_Exception *ex,
struct _Unwind_Context *ctx)
{
int version = 1;
uint64_t ex_class = ex->class;
int actions;
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if (actions & _UA_HANDLER_FRAME && !foreign) {
/*
* For handlers, reg #0 must be the exception's object and reg
* #1 the filter.
*/
_Unwind_SetGR(ctx, __builtin_eh_return_data_regno(0),
(uintptr_t)e->object);
#if defined(__arm__) || defined(__ARM__)
#ifdef OF_ARM
_Unwind_SetGR(ctx, __builtin_eh_return_data_regno(1),
ex->barrier_cache.bitpattern[1]);
_Unwind_SetIP(ctx, ex->barrier_cache.bitpattern[3]);
#else
_Unwind_SetGR(ctx, __builtin_eh_return_data_regno(1),
e->filter);
_Unwind_SetIP(ctx, e->landingpad);
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CONTINUE_UNWIND;
if (actions & _UA_SEARCH_PHASE) {
if (!(found & HANDLER_FOUND) || foreign)
CONTINUE_UNWIND;
/* Cache it so we don't have to search it again in phase 2 */
#if defined(__arm__) || defined(__ARM__)
#ifdef OF_ARM
ex->barrier_cache.sp = _Unwind_GetGR(ctx, 13);
ex->barrier_cache.bitpattern[1] = filter;
ex->barrier_cache.bitpattern[3] = landingpad;
#else
e->landingpad = landingpad;
e->filter = filter;
#endif
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