RtlMarkExceptionHandlingPages

NTSTATUS __stdcall RtlMarkExceptionHandlingPages(
        UINT64 ImageBase,
        UINT64 ImageSize,
        _IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY *FunctionTable,
        UINT64 SizeOfTable,
        _RTL_BITMAP *ImagePages){
  UINT64 v6; 
  char *v8; 
  unsigned int v9; 
  unsigned int v10; 
  _IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY *v11; 
  ULONG BeginAddress; 
  unsigned int *i; 
  int v14; 
  _BYTE *v15; 
  int v16; 
  bool v17; 
  unsigned int v18; 
  __int64 v19; 
  char v20; 
  _IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY *v22; 
  UINT64 v23; 
  char *v24; 

  v6 = ImageBase + (unsigned int)ImageSize;
  if( (unsigned __int64)FunctionTable >= ImageBase )
  {
    v8 = (char *)FunctionTable + (unsigned int)SizeOfTable;
    v24 = v8;
    if( (unsigned __int64)v8 <= v6 )
    {
      v9 = (unsigned int)SizeOfTable / 0xC;
      if( (unsigned int)SizeOfTable == 12 * ((unsigned int)SizeOfTable / 0xCui64) )
      {
        RtlSetBits(
          ImagePages,
          (unsigned int)(((unsigned __int64)FunctionTable - ImageBase) >> 12),
          (unsigned int)(((unsigned __int64)&FunctionTable[511].1 + (unsigned int)SizeOfTable - ImageBase + 3) >> 12)
        - (unsigned int)(((unsigned __int64)FunctionTable - ImageBase) >> 12));
        v10 = 0;
        if( !v9 )
          return 0;
        v11 = FunctionTable;
LABEL_6:
        BeginAddress = v11[1].BeginAddress;
        for( i = (unsigned int *)v11; (BeginAddress & 1) != 0; BeginAddress = i[2] )
        {
          LODWORD(v23) = RtlpConvertFunctionEntry((INT64)i, ImageBase);
          i = (unsigned int *)v23;
          if( v23 >= (unsigned __int64)FunctionTable && v23 + 12 <= (unsigned __int64)v8 )
            break;
          if( v23 < ImageBase || v23 > v6 - 12 )
            return -1073741569;
          RtlSetBits(
            ImagePages,
            (unsigned int)((v23 - ImageBase) >> 12),
            (unsigned int)((unsigned __int64)(((_WORD)v23 - (_WORD)ImageBase) & 0xFFF) + 12 > 0x1000) + 1);
        }
        v14 = 0;
        while( 1 )
        {
          v15 = (_BYTE *)(ImageBase + i[2]);
          if( (unsigned __int64)v15 < ImageBase || (unsigned __int64)(v15 + 6) > v6 )
            break;
          v16 = (unsigned __int8)v15[2];
          v17 = (v16 & 1) == 0;
          v18 = 2 * v16 + 6;
          v19 = (unsigned int)(2 * v16 + 8);
          if( v17 )
            v19 = v18;
          v20 = *v15 >> 3;
          if( (v20 & 4) != 0 )
          {
            v19 = (unsigned int)(v19 + 12);
          }
          else if( (v20 & 3) != 0 )
          {
            v19 = (unsigned int)(v19 + 8);
          }
          if( (unsigned __int64)&v15[v19] > v6 )
            break;
          RtlSetBits(
            ImagePages,
            (unsigned int)((unsigned __int64)&v15[-ImageBase] >> 12),
            (unsigned int)((unsigned __int64)&v15[(unsigned int)v19 + 4095 - ImageBase] >> 12)
          - (unsigned int)((unsigned __int64)&v15[-ImageBase] >> 12));
          if( (*v15 & 0x20) != 0 )
          {
            if( (unsigned int)++v14 > 0x20 )
              return -1073741569;
            i = (unsigned int *)&v15[2 * (((unsigned __int8)v15[2] + 1i64) & 0xFFFFFFFFFFFFFFFEui64) + 4];
            v22 = RtlpSearchFunctionTable(FunctionTable, v9, ImageBase + *i, ImageBase);
            if( !v22 || v22[1].BeginAddress != i[2] )
              continue;
          }
          v8 = v24;
          ++v10;
          v11 = (_IMAGE_ARM64_RUNTIME_FUNCTION_ENTRY *)((char *)v11 + 12);
          if( v10 < v9 )
            goto LABEL_6;
          return 0;
        }
      }
    }
  }
  return -1073741569;
}

Referenced by: