KdpAddBreakpoint

UINT64 __stdcall KdpAddBreakpoint(
        VOID *Address,
        UINT64 BreakInstruction,
        UINT8 BreakInstructionSize,
        UINT8 BreakInstructionAlignment){
  __int64 v8; 
  int v9; 
  VOID **i; 
  int v11; 
  NTSTATUS v12; 
  char v14; 
  int inserted; 
  UINT64 Buffer[5]; 

  Buffer[0] = 0i64;
  if( ((unsigned __int8)(BreakInstructionSize - 1) & BreakInstructionSize) != 0
    || (unsigned __int64)Address >= 0xFFFF800000000000ui64
    && (BreakInstruction != 204 || BreakInstructionSize != 1 || BreakInstructionAlignment) )
  {
    return 0i64;
  }
  v8 = 0i64;
  ++*(&KiSwapEvent + 1155);
  v9 = 0;
  for( i = (VOID **)&KdpBreakpointTable; ; i += 5 )
  {
    v11 = *((_DWORD *)i + 8);
    if( (v11 & 1) != 0 && *i == Address )
      break;
    if( !v8 && !v11 )
      v8 = (__int64)i;
    if( (unsigned int)++v9 >= 0x20 )
    {
      if( !v8 )
        return 0i64;
      v12 = KdpCopyCodeStream(
              (unsigned __int64)Address & ~(unsigned __int64)BreakInstructionAlignment,
              Buffer,
              (VOID *)BreakInstructionSize,
              4ui64);
      *(_QWORD *)v8 = Address;
      *(_BYTE *)(v8 + 36) = BreakInstructionSize;
      *(_BYTE *)(v8 + 37) = BreakInstructionAlignment;
      *(_QWORD *)(v8 + 16) = BreakInstruction;
      if( v12 < 0 )
      {
        *(_QWORD *)(v8 + 8) = KeGetCurrentThread()->ApcState.Process;
        *(_DWORD *)(v8 + 32) = 3;
        return(unsigned int)((v8 - (__int64)&KdpBreakpointTable) / 40) + 1;
      }
      *(_QWORD *)(v8 + 24) = Buffer[0];
      v14 = KdpOweBreakpoint;
      *(_QWORD *)(v8 + 8) = KeGetCurrentThread()->ApcState.Process;
      inserted = KdpInsertBreakpoint(v8, Buffer);
      if( inserted )
      {
        *(_DWORD *)(v8 + 32) = inserted;
        return(unsigned int)((v8 - (__int64)&KdpBreakpointTable) / 40) + 1;
      }
      KdpOweBreakpoint = v14;
      return 0i64;
    }
  }
  if( (v11 & 8) == 0 )
    return 0i64;
  *((_DWORD *)i + 8) = v11 & 0xFFFFFFF7;
  return(unsigned int)(v9 + 1);
}

Referenced by: