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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/*********************************************************************

    dvdisasm.h

    Disassembly debugger view.

***************************************************************************/

#ifndef MAME_EMU_DEBUG_DVDISASM_H
#define MAME_EMU_DEBUG_DVDISASM_H

#pragma once

#include "debugvw.h"
#include "debugbuf.h"

#include "vecstream.h"


//**************************************************************************
//  CONSTANTS
//**************************************************************************

// selections for what goes into the right-hand column
enum disasm_right_column
{
	DASM_RIGHTCOL_NONE,
	DASM_RIGHTCOL_RAW,
	DASM_RIGHTCOL_ENCRYPTED,
	DASM_RIGHTCOL_COMMENTS
};



//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// a disassembly view_source
class debug_view_disasm_source : public debug_view_source
{
	friend class debug_view_disasm;

public:
	// construction/destruction
	debug_view_disasm_source(std::string &&name, device_t &device);

	// getters
	address_space &space() const { return m_space; }
	offs_t pcbase() const { return m_pcbase != nullptr ? m_pcbase->value() & m_space.logaddrmask() : 0; }

private:
	// internal state
	address_space &     m_space;                // address space to display
	address_space &     m_decrypted_space;      // address space to display for decrypted opcodes
	const device_state_entry *m_pcbase;
};


// debug view for disassembly
class debug_view_disasm : public debug_view
{
	
ebug_view_disasm(running_machine &machine, debug_view_osd_update_func osdupdate, void *osdprivate); virtual ~debug_view_disasm(); public: // getters const char *expression() const { return m_expression.string(); } disasm_right_column right_column() const { return m_right_column; } u32 backward_steps() const { return m_backwards_steps; } u32 disasm_width() const { return m_dasm_width; } offs_t selected_address(); // setters void set_expression(const std::string &expression); void set_right_column(disasm_right_column contents); void set_backward_steps(u32 steps); void set_disasm_width(u32 width); void set_selected_address(offs_t address); virtual void set_source(const debug_view_source &source) override; protected: // view overrides virtual void view_update() override; virtual void view_notify(debug_view_notification type) override; virtual void view_char(int chval) override; virtual void view_click(const int button, const debug_view_xy& pos) override; private: // The information of one disassembly line. May become the actual // external interface at one point. struct dasm_line { offs_t m_address; // address of the instruction offs_t m_size; // size of the instruction std::string m_tadr; // instruction address as a string std::string m_dasm; // disassembly std::string m_topcodes; // textual representation of opcode/default values std::string m_tparams; // textual representation of parameter values std::string m_comment; // comment, when present bool m_is_pc; // this line's address is PC bool m_is_bp; // this line's address is a breakpoint bool m_is_visited; // this line has been visited dasm_line(offs_t address, offs_t size, std::string dasm) : m_address(address), m_size(size), m_dasm(dasm), m_is_pc(false), m_is_bp(false), m_is_visited(false) {} }; // internal helpers void generate_from_address(debug_disasm_buffer &buffer, offs_t address); bool generate_with_pc(debug_disasm_buffer &buffer, offs_t pc); int address_position(offs_t pc) const; void generate_dasm(debug_disasm_buffer &buffer, offs_t pc); void complete_information(const debug_view_disasm_source &source, debug_disasm_buffer &buffer, offs_t pc); void enumerate_sources(); void print(int row, std::string text, int start, int end, u8 attrib); void redraw(); // internal state disasm_right_column m_right_column; // right column contents u32 m_backwards_steps; // number of backwards steps u32 m_dasm_width; // width of the disassembly area offs_t m_previous_pc; // previous pc, to detect whether it changed debug_view_expression m_expression; // expression-related information std::vector<dasm_line> m_dasm; // disassembled instructions // constants static constexpr int DEFAULT_DASM_LINES = 1000; static constexpr int DEFAULT_DASM_WIDTH = 50; static constexpr int DASM_MAX_BYTES = 16; }; #endif // MAME_EMU_DEBUG_DVDISASM_H