// license:BSD-3-Clause // copyright-holders:Aaron Giles /********************************************************************* dvmemory.h Memory debugger view. ***************************************************************************/ #ifndef __DVMEMORY_H__ #define __DVMEMORY_H__ #include "dvstate.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // a memory view_source class debug_view_memory_source : public debug_view_source { friend class debug_view_memory; debug_view_memory_source(const char *name, address_space &space); debug_view_memory_source(const char *name, memory_region ®ion); debug_view_memory_source(const char *name, void *base, int element_size, int num_elements); public: address_space *space() const { return m_space; } private: address_space *m_space; // address space we reference (if any) device_memory_interface *m_memintf; // pointer to the memory interface of the device void * m_base; // pointer to memory base offs_t m_length; // length of memory offs_t m_offsetxor; // XOR to apply to offsets endianness_t m_endianness; // endianness of memory UINT8 m_prefsize; // preferred bytes per chunk }; // debug view for memory class debug_view_memory : public debug_view { friend resource_pool_object::~resource_pool_object(); friend class debug_view_manager; // construction/destruction debug_view_memory(running_machine &machine, debug_view_osd_update_func osdupdate, void *osdprivate); public: // getters const char *expression() { return m_expression.string(); } UINT8 bytes_per_chunk() { flush_updates(); return m_bytes_per_chunk; } UINT8 chunks_per_row() { flush_updates(); return m_chunks_per_row; } bool reverse() const { return m_reverse_view; } bool ascii() const { return m_ascii_view; } bool physical() const { return m_no_translation; } offs_t addressAtCursorPosition(const debug_view_xy& pos) { return get_cursor_pos(pos).m_address; } // setters void set_expression(const char *expression); void set_bytes_per_chunk(UINT8 chunkbytes); void set_chunks_per_row(UINT32 rowchunks); void set_reverse(bool reverse); void set_ascii(bool reverse); void set_physical(bool physical); protected: // view overrides virtual void view_notify(debug_view_notification type); virtual void view_update(); virtual void view_char(int chval); virtual void view_click(const int button, const debug_view_xy& pos); private: struct cursor_pos { cursor_pos(offs_t address = 0, UINT8 shift = 0) : m_address(address), m_shift(shift) { } offs_t m_address; UINT8 m_shift; }; // internal helpers void enumerate_sources(); void recompute(); bool needs_recompute(); // cursor position management cursor_pos get_cursor_pos(const debug_view_xy& cursor); void set_cursor_pos(cursor_pos pos); cursor_pos begin_update_and_get_cursor_pos() { begin_update(); return get_cursor_pos(m_cursor); } void end_update_and_set_cursor_pos(cursor_pos pos) { set_cursor_pos(pos); end_update(); } // memory access bool read(UINT8 size, offs_t offs, UINT64 &data); void write(UINT8 size, offs_t offs, UINT64 data); // internal state debug_view_expression m_expression; // expression describing the start address UINT32 m_chunks_per_row; // number of chunks displayed per line UINT8 m_bytes_per_chunk; // bytes per chunk bool m_reverse_view; // reverse-endian view? bool m_ascii_view; // display ASCII characters? bool m_no_translation; // don't run addresses through the cpu translation hook offs_t m_maxaddr; // (derived) maximum address to display UINT32 m_bytes_per_row; // (derived) number of bytes displayed per line UINT32 m_byte_offset; // (derived) offset of starting visible byte astring m_addrformat; // (derived) format string to use to print addresses struct section { bool contains(int x) const { return x >= m_pos && x < m_pos + m_width; } INT32 m_pos; /* starting position */ INT32 m_width; /* width of this section */ }; section m_section[3]; // (derived) 3 sections to manage struct memory_view_pos { UINT8 m_spacing; /* spacing between each entry */ UINT8 m_shift[24]; /* shift for each character */ }; static const memory_view_pos s_memory_pos_table[9]; // table for rendering at different chunk sizes // constants static const int MEM_MAX_LINE_WIDTH = 1024; }; #endif