// demand_interval: Given a PC 'pc', return an interval. Note that
// 'pc' may be bogus (i.e, not even point to a text segment) and in this
// case UNW_INTERVAL_NULL should be returned.
UNW_INTERVAL_t
demand_interval(void* pc, bool isTopFrame)
{
#if (HPC_UNW_LITE)
void* proc_beg = NULL, *mod_beg = NULL;
dylib_find_proc(pc, &proc_beg, &mod_beg);
if (!proc_beg && mod_beg && !isTopFrame) {
// The procedure begin could not be found but pc is valid (since
// the module begin was found).
proc_beg = mips_find_proc(pc, mod_beg);
}
if (proc_beg) {
uint32_t* beg = (uint32_t*)proc_beg; // [insn_beg, insn_end)
uint32_t* end = (uint32_t*)pc;
return mips_build_intervals(beg, end, false/*retFirst*/, 0);
}
else {
return UNW_INTERVAL_NULL;
}
#else
// N.B.: calls build_intervals() if necessary
return (UNW_INTERVAL_t)hpcrun_addr_to_interval(pc, NULL, NULL);
#endif
}
static validation_status
validateTroll(void* addr, void* arg)
{
bool isInCode = false;
#if (HPC_UNW_LITE)
void *proc_beg = NULL, *mod_beg = NULL;
dylib_find_proc(addr, &proc_beg, &mod_beg);
isInCode = (mod_beg || proc_beg);
#else
void* proc_beg = NULL;
void* proc_end = NULL;
bool ret = fnbounds_enclosing_addr(addr, &proc_beg, &proc_end, NULL);
isInCode = ret && proc_beg;
#endif
if (isInCode && isAfterCall(addr)) {
return UNW_ADDR_CONFIRMED;
}
else {
return UNW_ADDR_WRONG;
}
}
