RtlVerifyUserUnwindTarget

INT64 __fastcall RtlVerifyUserUnwindTarget(UINT64 a1, INT64 a2, INT64 a3){
  int v4; 
  INT64 result; 
  unsigned __int64 v7; 
  int v8; 
  __int64 v9; 
  unsigned int v10; 
  unsigned __int64 v11; 
  char *v12; 
  unsigned __int64 v13; 
  unsigned __int64 v14; 
  unsigned int v15; 
  unsigned __int64 v16; 
  unsigned __int64 v17; 
  char *v18; 
  unsigned __int64 v19; 
  int Key; 
  v4 = a2;
  v17 = 0i64;
  v16 = 0i64;
  Key = 0;
  result = RtlGetImageBaseAndLoadConfig(a1, (PVOID *)&v16, (INT64 *)&v17);
  if( (int)result >= 0 )
  {
    v7 = v17;
    if( a3 )
    {
      *(_BYTE *)(a3 + 16) = 1;
      *(_QWORD *)a3 = v16;
      *(_QWORD *)(a3 + 8) = v7;
    }
    if( v16 )
    {
      v8 = 0x10000;
      if( v4 != 2 )
        v8 = 0x400000;
      v9 = 192i64;
      if( v4 != 2 )
        v9 = 280i64;
      v10 = v9;
      v11 = v7 + v9;
      if( v11 > 0x7FFFFFFF0000i64 || v11 < v7 )
        MEMORY[0x7FFFFFFF0000] = 0;
      if( !v7 || *(_DWORD *)v7 < v10 || (v8 & *(_DWORD *)(v7 + 144)) == 0 )
        return 0i64;
      if( v4 == 2 )
      {
        v12 = *(char **)(v7 + 176);
        v18 = v12;
        v13 = *(_QWORD *)(v7 + 184);
        v19 = v13;
        if( v13 >= 0xFFFFFFFF )
          return 3221225621i64;
      }
      else
      {
        v12 = *(char **)(v7 + 264);
        v18 = v12;
        if( (unsigned __int64)v12 <= v16 )
          return 0i64;
        v13 = *(_QWORD *)(v7 + 272);
        v19 = v13;
        if( v13 >= 0xFFFFFFFF )
          return 3221225621i64;
      }
      if( v13 )
      {
        Key = a1 - v16;
        v15 = (*(_DWORD *)(v7 + 144) >> 28) + 4;
        if( v13 > 0xFFFFFFFFFFFFFFFFui64 / v15 )
          return 3221225621i64;
        v14 = v13 * v15;
        if( v14 && ((unsigned __int64)&v12[v14] > 0x7FFFFFFF0000i64 || &v12[v14] < v12) )
          MEMORY[0x7FFFFFFF0000] = 0;
        if( bsearch_s(
               &Key,
               v12,
               v13,
               v15,
               (int(__cdecl *)(void *, const void *, const void *))RtlpTargetCompare,
               0i64) )
        {
          return 0i64;
        }
      }
    }
    if( v4 || !RtlpFindDynamicEHContinuationTarget(a1) )
      return 3221227018i64;
    else
      return 0i64;
  }
  return result;
}

Referenced by: