// Copyright 2008 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#include <cstdio>
#include <cstring>
#include <disasm.h>  // Bochs
#include <sstream>

#include <wx/button.h>
#include <wx/listctrl.h>
#include <wx/panel.h>
#include <wx/sizer.h>
#include <wx/textctrl.h>

#include "Common/CommonTypes.h"
#include "Common/GekkoDisassembler.h"
#include "Core/PowerPC/Gekko.h"
#include "Core/PowerPC/PPCAnalyst.h"
#include "DolphinWX/Debugger/JitWindow.h"
#include "DolphinWX/Globals.h"
#include "DolphinWX/WxUtils.h"
#include "UICommon/Disassembler.h"

CJitWindow::CJitWindow(wxWindow* parent, wxWindowID id, const wxPoint& pos, const wxSize& size,
                       long style, const wxString& name)
    : wxPanel(parent, id, pos, size, style, name)
{
  wxBoxSizer* sizerBig = new wxBoxSizer(wxVERTICAL);
  wxBoxSizer* sizerSplit = new wxBoxSizer(wxHORIZONTAL);
  sizerSplit->Add(ppc_box = new wxTextCtrl(this, wxID_ANY, "(ppc)", wxDefaultPosition,
                                           wxDefaultSize, wxTE_MULTILINE),
                  1, wxEXPAND);
  sizerSplit->Add(x86_box = new wxTextCtrl(this, wxID_ANY, "(x86)", wxDefaultPosition,
                                           wxDefaultSize, wxTE_MULTILINE),
                  1, wxEXPAND);
  sizerBig->Add(block_list = new JitBlockList(this, wxID_ANY, wxDefaultPosition,
                                              wxDLG_UNIT(this, wxSize(80, 96)),
                                              wxLC_REPORT | wxSUNKEN_BORDER | wxLC_ALIGN_LEFT |
                                                  wxLC_SINGLE_SEL | wxLC_SORT_ASCENDING),
                0, wxEXPAND);
  sizerBig->Add(sizerSplit, 2, wxEXPAND);

  sizerBig->Add(button_refresh = new wxButton(this, wxID_ANY, _("&Refresh")));
  button_refresh->Bind(wxEVT_BUTTON, &CJitWindow::OnRefresh, this);

  SetSizerAndFit(sizerBig);

#if defined(_M_X86)
  m_disassembler.reset(GetNewDisassembler("x86"));
#elif defined(_M_ARM_64)
  m_disassembler.reset(GetNewDisassembler("aarch64"));
#else
  m_disassembler.reset(GetNewDisassembler("UNK"));
#endif
}

void CJitWindow::OnRefresh(wxCommandEvent& /*event*/)
{
  block_list->Repopulate();
}

void CJitWindow::ViewAddr(u32 em_address)
{
  Show(true);
  Compare(em_address);
  SetFocus();
}

void CJitWindow::Compare(u32 em_address)
{
  // Get host side code disassembly
  u32 host_instructions_count = 0;
  u32 host_code_size = 0;
  std::string host_instructions_disasm;
  host_instructions_disasm = DisassembleBlock(m_disassembler.get(), &em_address,
                                              &host_instructions_count, &host_code_size);

  x86_box->SetValue(host_instructions_disasm);

  // == Fill in ppc box
  u32 ppc_addr = em_address;
  PPCAnalyst::CodeBuffer code_buffer(32000);
  PPCAnalyst::BlockStats st;
  PPCAnalyst::BlockRegStats gpa;
  PPCAnalyst::BlockRegStats fpa;
  PPCAnalyst::CodeBlock code_block;
  PPCAnalyst::PPCAnalyzer analyzer;
  analyzer.SetOption(PPCAnalyst::PPCAnalyzer::OPTION_CONDITIONAL_CONTINUE);

  code_block.m_stats = &st;
  code_block.m_gpa = &gpa;
  code_block.m_fpa = &fpa;

  if (analyzer.Analyze(ppc_addr, &code_block, &code_buffer, 32000) != 0xFFFFFFFF)
  {
    std::ostringstream ppc_disasm;
    for (u32 i = 0; i < code_block.m_num_instructions; i++)
    {
      const PPCAnalyst::CodeOp& op = code_buffer.codebuffer[i];
      std::string opcode = GekkoDisassembler::Disassemble(op.inst.hex, op.address);
      ppc_disasm << std::setfill('0') << std::setw(8) << std::hex << op.address;
      ppc_disasm << " " << opcode << std::endl;
    }

    // Add stats to the end of the ppc box since it's generally the shortest.
    ppc_disasm << std::dec << std::endl;

    // Add some generic analysis
    if (st.isFirstBlockOfFunction)
      ppc_disasm << "(first block of function)" << std::endl;
    if (st.isLastBlockOfFunction)
      ppc_disasm << "(last block of function)" << std::endl;

    ppc_disasm << st.numCycles << " estimated cycles" << std::endl;

    ppc_disasm << "Num instr: PPC: " << code_block.m_num_instructions
               << " x86: " << host_instructions_count << " (blowup: "
               << 100 * host_instructions_count / code_block.m_num_instructions - 100 << "%)"
               << std::endl;

    ppc_disasm << "Num bytes: PPC: " << code_block.m_num_instructions * 4
               << " x86: " << host_code_size
               << " (blowup: " << 100 * host_code_size / (4 * code_block.m_num_instructions) - 100
               << "%)" << std::endl;

    ppc_box->SetValue(ppc_disasm.str());
  }
  else
  {
    ppc_box->SetValue(StringFromFormat("(non-code address: %08x)", em_address));
    x86_box->SetValue("---");
  }
}

void CJitWindow::Repopulate()
{
}

void CJitWindow::OnHostMessage(wxCommandEvent& event)
{
  switch (event.GetId())
  {
  case IDM_NOTIFY_MAP_LOADED:
    // NotifyMapLoaded();
    break;
  }
}

// JitBlockList
//================

enum
{
  COLUMN_ADDRESS,
  COLUMN_PPCSIZE,
  COLUMN_X86SIZE,
  COLUMN_NAME,
  COLUMN_FLAGS,
  COLUMN_NUMEXEC,
  COLUMN_COST,  // (estimated as x86size * numexec)
};

JitBlockList::JitBlockList(wxWindow* parent, const wxWindowID id, const wxPoint& pos,
                           const wxSize& size, long style)
    : wxListCtrl(parent, id, pos, size, style)  // | wxLC_VIRTUAL)
{
  Init();
}

void JitBlockList::Init()
{
  InsertColumn(COLUMN_ADDRESS, _("Address"));
  InsertColumn(COLUMN_PPCSIZE, _("PPC Size"));
  InsertColumn(COLUMN_X86SIZE, _("x86 Size"));
  InsertColumn(COLUMN_NAME, _("Symbol"));
  InsertColumn(COLUMN_FLAGS, _("Flags"));
  InsertColumn(COLUMN_NUMEXEC, _("NumExec"));
  InsertColumn(COLUMN_COST, _("Cost"));
}

void JitBlockList::Repopulate()
{
}