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/*
* Define HAVE_DWARF_EXCEPTIONS if HAVE_SEH_EXCEPTIONS is defined, as SEH
* exceptions are implemented as a wrapper around DWARF exceptions.
*/
#ifdef HAVE_SEH_EXCEPTIONS
# define HAVE_DWARF_EXCEPTIONS
#endif
#if defined(OF_ARM) && !defined(__ARM_DWARF_EH__)
# define HAVE_ARM_EHABI_EXCEPTIONS
#endif
#ifdef HAVE_DWARF_EXCEPTIONS
struct _Unwind_Context;
typedef enum {
_URC_OK = 0,
_URC_END_OF_STACK = 5
}_Unwind_Reason_Code;
struct backtrace_ctx {
void **backtrace;
uint8_t i;
};
extern _Unwind_Reason_Code _Unwind_Backtrace(
_Unwind_Reason_Code(*)(struct _Unwind_Context*, void*), void*);
# ifdef OF_ARM
extern int _Unwind_VRS_Get(struct _Unwind_Context*, int, uint32_t, int, void*);
# ifndef HAVE_ARM_EHABI_EXCEPTIONS
extern uintptr_t _Unwind_GetIP(struct _Unwind_Context*);
# else
extern uintptr_t _Unwind_GetIP(struct _Unwind_Context*);
extern int _Unwind_VRS_Get(struct _Unwind_Context*, int, uint32_t, int, void*);
# endif
#endif
#if !defined(HAVE_STRERROR_R) && defined(OF_HAVE_THREADS)
static of_mutex_t mutex;
static void __attribute__((__constructor__))
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#ifdef HAVE_DWARF_EXCEPTIONS
static _Unwind_Reason_Code
backtrace_callback(struct _Unwind_Context *ctx, void *data)
{
struct backtrace_ctx *bt = data;
if (bt->i < OF_BACKTRACE_SIZE) {
# ifndef HAVE_ARM_EHABI_EXCEPTIONS
bt->backtrace[bt->i++] = (void*)_Unwind_GetIP(ctx);
# ifdef OF_ARM
# else
uintptr_t ip;
_Unwind_VRS_Get(ctx, 0, 15, 0, &ip);
bt->backtrace[bt->i++] = (void*)(ip & ~1);
# else
bt->backtrace[bt->i++] = (void*)_Unwind_GetIP(ctx);
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