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57ef3a5ed6
mame/src/emu/debug/debugcpu.c
Aaron Giles 57ef3a5ed6 Split the screen device into a separate module. 
Converted global video routines into a video_manager.
Moved video manager initialization earlier in startup.
2010-12-02 17:26:38 +00:00

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/*********************************************************************
debugcpu.c
Debugger CPU/memory interface engine.
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#include "emu.h"
#include "emuopts.h"
#include "osdepend.h"
#include "debugcpu.h"
#include "debugcmd.h"
#include "debugcon.h"
#include "express.h"
#include "debugvw.h"
#include "debugger.h"
#include "debugint/debugint.h"
#include "uiinput.h"
#include "xmlfile.h"
#include <ctype.h>
#include <zlib.h>
/***************************************************************************
CONSTANTS
***************************************************************************/
#define NUM_TEMP_VARIABLES 10
enum
{
EXECUTION_STATE_STOPPED,
EXECUTION_STATE_RUNNING
};
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
/* in mame.h: typedef struct _debugcpu_private debugcpu_private; */
struct _debugcpu_private
{
device_t *livecpu;
device_t *visiblecpu;
device_t *breakcpu;
FILE * source_file; /* script source file */
symbol_table * symtable; /* global symbol table */
bool within_instruction_hook;
bool vblank_occurred;
bool memory_modified;
bool debugger_access;
int execution_state;
UINT32 bpindex;
UINT32 wpindex;
UINT64 wpdata;
UINT64 wpaddr;
UINT64 tempvar[NUM_TEMP_VARIABLES];
osd_ticks_t last_periodic_update_time;
bool comments_loaded;
};
/***************************************************************************
FUNCTION PROTOTYPES
***************************************************************************/
/* internal helpers */
static void debug_cpu_exit(running_machine &machine);
static void on_vblank(screen_device &device, void *param, bool vblank_state);
static void reset_transient_flags(running_machine &machine);
static void process_source_file(running_machine *machine);
/* expression handlers */
static UINT64 expression_read_memory(void *param, const char *name, int space, UINT32 address, int size);
static UINT64 expression_read_program_direct(address_space *space, int opcode, offs_t address, int size);
static UINT64 expression_read_memory_region(running_machine *machine, const char *rgntag, offs_t address, int size);
static void expression_write_memory(void *param, const char *name, int space, UINT32 address, int size, UINT64 data);
static void expression_write_program_direct(address_space *space, int opcode, offs_t address, int size, UINT64 data);
static void expression_write_memory_region(running_machine *machine, const char *rgntag, offs_t address, int size, UINT64 data);
static expression_error::error_code expression_validate(void *param, const char *name, int space);
/* variable getters/setters */
static UINT64 get_cpunum(symbol_table &table, void *ref);
static UINT64 get_beamx(symbol_table &table, void *ref);
static UINT64 get_beamy(symbol_table &table, void *ref);
static UINT64 get_frame(symbol_table &table, void *ref);
/***************************************************************************
INITIALIZATION AND CLEANUP
***************************************************************************/
/*-------------------------------------------------
debug_cpu_init - initialize the CPU
information for debugging
-------------------------------------------------*/
void debug_cpu_init(running_machine *machine)
{
screen_device *first_screen = machine->first_screen();
debugcpu_private *global;
int regnum;
/* allocate and reset globals */
machine->debugcpu_data = global = auto_alloc_clear(machine, debugcpu_private);
global->execution_state = EXECUTION_STATE_STOPPED;
global->bpindex = 1;
global->wpindex = 1;
/* create a global symbol table */
global->symtable = global_alloc(symbol_table(machine));
// configure our base memory accessors
debug_cpu_configure_memory(*machine, *global->symtable);
/* add "wpaddr", "wpdata", "cycles", "cpunum", "logunmap" to the global symbol table */
global->symtable->add("wpaddr", symbol_table::READ_ONLY, &global->wpaddr);
global->symtable->add("wpdata", symbol_table::READ_ONLY, &global->wpdata);
global->symtable->add("cpunum", NULL, get_cpunum);
global->symtable->add("beamx", (void *)first_screen, get_beamx);
global->symtable->add("beamy", (void *)first_screen, get_beamy);
global->symtable->add("frame", (void *)first_screen, get_frame);
/* add the temporary variables to the global symbol table */
for (regnum = 0; regnum < NUM_TEMP_VARIABLES; regnum++)
{
char symname[10];
sprintf(symname, "temp%d", regnum);
global->symtable->add(symname, symbol_table::READ_WRITE, &global->tempvar[regnum]);
}
/* first CPU is visible by default */
global->visiblecpu = machine->firstcpu;
/* add callback for breaking on VBLANK */
if (machine->primary_screen != NULL)
machine->primary_screen->register_vblank_callback(on_vblank, NULL);
machine->add_notifier(MACHINE_NOTIFY_EXIT, debug_cpu_exit);
}
void debug_cpu_configure_memory(running_machine &machine, symbol_table &table)
{
table.configure_memory(&machine, expression_validate, expression_read_memory, expression_write_memory);
}
/*-------------------------------------------------
debug_cpu_flush_traces - flushes all traces;
this is useful if a trace is going on when we
fatalerror
-------------------------------------------------*/
void debug_cpu_flush_traces(running_machine *machine)
{
/* this can be called on exit even when no debugging is enabled, so
make sure the devdebug is valid before proceeding */
for (device_t *device = machine->m_devicelist.first(); device != NULL; device = device->next())
if (device->debug() != NULL)
device->debug()->trace_flush();
}
/***************************************************************************
DEBUGGING STATUS AND INFORMATION
***************************************************************************/
/*-------------------------------------------------
cpu_get_visible_cpu - return the visible CPU
device (the one that commands should apply to)
-------------------------------------------------*/
device_t *debug_cpu_get_visible_cpu(running_machine *machine)
{
return machine->debugcpu_data->visiblecpu;
}
/*-------------------------------------------------
debug_cpu_within_instruction_hook - true if
the debugger is currently live
-------------------------------------------------*/
int debug_cpu_within_instruction_hook(running_machine *machine)
{
return machine->debugcpu_data->within_instruction_hook;
}
/*-------------------------------------------------
debug_cpu_is_stopped - return true if the
current execution state is stopped
-------------------------------------------------*/
int debug_cpu_is_stopped(running_machine *machine)
{
debugcpu_private *global = machine->debugcpu_data;
return (global != NULL) ? (global->execution_state == EXECUTION_STATE_STOPPED) : false;
}
/***************************************************************************
SYMBOL TABLE INTERFACES
***************************************************************************/
/*-------------------------------------------------
debug_cpu_get_global_symtable - return the
global symbol table
-------------------------------------------------*/
symbol_table *debug_cpu_get_global_symtable(running_machine *machine)
{
return machine->debugcpu_data->symtable;
}
/*-------------------------------------------------
debug_cpu_get_visible_symtable - return the
locally-visible symbol table
-------------------------------------------------*/
symbol_table *debug_cpu_get_visible_symtable(running_machine *machine)
{
return &machine->debugcpu_data->visiblecpu->debug()->symtable();
}
/*-------------------------------------------------
debug_cpu_source_script - specifies a debug
command script to execute
-------------------------------------------------*/
void debug_cpu_source_script(running_machine *machine, const char *file)
{
debugcpu_private *global = machine->debugcpu_data;
/* close any existing source file */
if (global->source_file != NULL)
{
fclose(global->source_file);
global->source_file = NULL;
}
/* open a new one if requested */
if (file != NULL)
{
global->source_file = fopen(file, "r");
if (!global->source_file)
{
if (machine->phase() == MACHINE_PHASE_RUNNING)
debug_console_printf(machine, "Cannot open command file '%s'\n", file);
else
fatalerror("Cannot open command file '%s'", file);
}
}
}
//**************************************************************************
// MEMORY AND DISASSEMBLY HELPERS
//**************************************************************************
//-------------------------------------------------
// debug_comment_save - save all comments for
// the given machine
//-------------------------------------------------
bool debug_comment_save(running_machine *machine)
{
// if we don't have a root, bail
xml_data_node *root = xml_file_create();
if (root == NULL)
return false;
// wrap in a try/catch to handle errors
try
{
// create a comment node
xml_data_node *commentnode = xml_add_child(root, "mamecommentfile", NULL);
if (commentnode == NULL)
throw emu_exception();
xml_set_attribute_int(commentnode, "version", COMMENT_VERSION);
// create a system node
xml_data_node *systemnode = xml_add_child(commentnode, "system", NULL);
if (systemnode == NULL)
throw emu_exception();
xml_set_attribute(systemnode, "name", machine->gamedrv->name);
// for each device
bool found_comments = false;
for (device_t *device = machine->m_devicelist.first(); device != NULL; device = device->next())
if (device->debug()->comment_count() > 0)
{
// create a node for this device
xml_data_node *curnode = xml_add_child(systemnode, "cpu", NULL);
if (curnode == NULL)
throw emu_exception();
xml_set_attribute(curnode, "tag", device->tag());
// export the comments
if (!device->debug()->comment_export(*curnode))
throw emu_exception();
found_comments = true;
}
// flush the file
if (found_comments)
{
astring fname(machine->basename(), ".cmt");
mame_file *fp;
file_error filerr = mame_fopen(SEARCHPATH_COMMENT, fname, OPEN_FLAG_WRITE | OPEN_FLAG_CREATE | OPEN_FLAG_CREATE_PATHS, &fp);
if (filerr == FILERR_NONE)
{
xml_file_write(root, mame_core_file(fp));
mame_fclose(fp);
}
}
}
catch (emu_exception &)
{
xml_file_free(root);
return false;
}
// free and get out of here
xml_file_free(root);
return true;
}
//-------------------------------------------------
// debug_comment_load - load all comments for
// the given machine
//-------------------------------------------------
bool debug_comment_load(running_machine *machine)
{
// open the file
astring fname(machine->basename(), ".cmt");
mame_file *fp;
file_error filerr = mame_fopen(SEARCHPATH_COMMENT, fname, OPEN_FLAG_READ, &fp);
// if an error, just return false
if (filerr != FILERR_NONE)
return false;
// wrap in a try/catch to handle errors
xml_data_node *root = xml_file_read(mame_core_file(fp), NULL);
try
{
// read the file
if (root == NULL)
throw emu_exception();
// find the config node
xml_data_node *commentnode = xml_get_sibling(root->child, "mamecommentfile");
if (commentnode == NULL)
throw emu_exception();
// validate the config data version
int version = xml_get_attribute_int(commentnode, "version", 0);
if (version != COMMENT_VERSION)
throw emu_exception();
// check to make sure the file is applicable
xml_data_node *systemnode = xml_get_sibling(commentnode->child, "system");
const char *name = xml_get_attribute_string(systemnode, "name", "");
if (strcmp(name, machine->gamedrv->name) != 0)
throw emu_exception();
// iterate over devices
for (xml_data_node *cpunode = xml_get_sibling(systemnode->child, "cpu"); cpunode; cpunode = xml_get_sibling(cpunode->next, "cpu"))
{
device_t *device = machine->device(xml_get_attribute_string(cpunode, "tag", ""));
if (device != NULL)
if (!device->debug()->comment_import(*cpunode))
throw emu_exception();
}
}
catch (emu_exception &)
{
// clean up in case of error
if (root != NULL)
xml_file_free(root);
mame_fclose(fp);
return false;
}
// free the parser
xml_file_free(root);
mame_fclose(fp);
return true;
}
/***************************************************************************
MEMORY AND DISASSEMBLY HELPERS
***************************************************************************/
/*-------------------------------------------------
debug_cpu_translate - return the physical
address corresponding to the given logical
address
-------------------------------------------------*/
int debug_cpu_translate(address_space *space, int intention, offs_t *address)
{
device_memory_interface *memory;
if (space->cpu->interface(memory))
return memory->translate(space->spacenum(), intention, *address);
return true;
}
/***************************************************************************
DEBUGGER MEMORY ACCESSORS
***************************************************************************/
/*-------------------------------------------------
debug_read_byte - return a byte from the
the specified memory space
-------------------------------------------------*/
UINT8 debug_read_byte(address_space *_space, offs_t address, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
UINT64 custom;
UINT8 result;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, return 0xff */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_READ_DEBUG, &address))
result = 0xff;
/* if there is a custom read handler, and it returns true, use that value */
else if (device_memory(space->cpu)->read(space->spacenum(), address, 1, custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = space->read_byte(address);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
return result;
}
/*-------------------------------------------------
debug_read_word - return a word from the
specified memory space
-------------------------------------------------*/
UINT16 debug_read_word(address_space *_space, offs_t address, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
UINT16 result;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* if this is misaligned read, or if there are no word readers, just read two bytes */
if ((address & 1) != 0)
{
UINT8 byte0 = debug_read_byte(space, address + 0, apply_translation);
UINT8 byte1 = debug_read_byte(space, address + 1, apply_translation);
/* based on the endianness, the result is assembled differently */
if (space->endianness() == ENDIANNESS_LITTLE)
result = byte0 | (byte1 << 8);
else
result = byte1 | (byte0 << 8);
}
/* otherwise, this proceeds like the byte case */
else
{
UINT64 custom;
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, return 0xffff */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_READ_DEBUG, &address))
result = 0xffff;
/* if there is a custom read handler, and it returns true, use that value */
else if (device_memory(space->cpu)->read(space->spacenum(), address, 2, custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = space->read_word(address);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
}
return result;
}
/*-------------------------------------------------
debug_read_dword - return a dword from the
specified memory space
-------------------------------------------------*/
UINT32 debug_read_dword(address_space *_space, offs_t address, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
UINT32 result;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* if this is misaligned read, or if there are no dword readers, just read two words */
if ((address & 3) != 0)
{
UINT16 word0 = debug_read_word(space, address + 0, apply_translation);
UINT16 word1 = debug_read_word(space, address + 2, apply_translation);
/* based on the endianness, the result is assembled differently */
if (space->endianness() == ENDIANNESS_LITTLE)
result = word0 | (word1 << 16);
else
result = word1 | (word0 << 16);
}
/* otherwise, this proceeds like the byte case */
else
{
UINT64 custom;
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, return 0xffffffff */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_READ_DEBUG, &address))
result = 0xffffffff;
/* if there is a custom read handler, and it returns true, use that value */
else if (device_memory(space->cpu)->read(space->spacenum(), address, 4, custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = space->read_dword(address);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
}
return result;
}
/*-------------------------------------------------
debug_read_qword - return a qword from the
specified memory space
-------------------------------------------------*/
UINT64 debug_read_qword(address_space *_space, offs_t address, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
UINT64 result;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* if this is misaligned read, or if there are no qword readers, just read two dwords */
if ((address & 7) != 0)
{
UINT32 dword0 = debug_read_dword(space, address + 0, apply_translation);
UINT32 dword1 = debug_read_dword(space, address + 4, apply_translation);
/* based on the endianness, the result is assembled differently */
if (space->endianness() == ENDIANNESS_LITTLE)
result = dword0 | ((UINT64)dword1 << 32);
else
result = dword1 | ((UINT64)dword0 << 32);
}
/* otherwise, this proceeds like the byte case */
else
{
UINT64 custom;
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, return 0xffffffffffffffff */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_READ_DEBUG, &address))
result = ~(UINT64)0;
/* if there is a custom read handler, and it returns true, use that value */
else if (device_memory(space->cpu)->read(space->spacenum(), address, 8, custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = space->read_qword(address);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
}
return result;
}
/*-------------------------------------------------
debug_read_memory - return 1,2,4 or 8 bytes
from the specified memory space
-------------------------------------------------*/
UINT64 debug_read_memory(address_space *space, offs_t address, int size, int apply_translation)
{
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
switch (size)
{
case 1: result = debug_read_byte(space, address, apply_translation); break;
case 2: result = debug_read_word(space, address, apply_translation); break;
case 4: result = debug_read_dword(space, address, apply_translation); break;
case 8: result = debug_read_qword(space, address, apply_translation); break;
}
return result;
}
/*-------------------------------------------------
debug_write_byte - write a byte to the
specified memory space
-------------------------------------------------*/
void debug_write_byte(address_space *_space, offs_t address, UINT8 data, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns true, use that */
else if (device_memory(space->cpu)->write(space->spacenum(), address, 1, data))
;
/* otherwise, call the byte reading function for the translated address */
else
space->write_byte(address, data);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
global->memory_modified = true;
}
/*-------------------------------------------------
debug_write_word - write a word to the
specified memory space
-------------------------------------------------*/
void debug_write_word(address_space *_space, offs_t address, UINT16 data, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* if this is a misaligned write, or if there are no word writers, just read two bytes */
if ((address & 1) != 0)
{
if (space->endianness() == ENDIANNESS_LITTLE)
{
debug_write_byte(space, address + 0, data >> 0, apply_translation);
debug_write_byte(space, address + 1, data >> 8, apply_translation);
}
else
{
debug_write_byte(space, address + 0, data >> 8, apply_translation);
debug_write_byte(space, address + 1, data >> 0, apply_translation);
}
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns true, use that */
else if (device_memory(space->cpu)->write(space->spacenum(), address, 2, data))
;
/* otherwise, call the byte reading function for the translated address */
else
space->write_word(address, data);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
global->memory_modified = true;
}
}
/*-------------------------------------------------
debug_write_dword - write a dword to the
specified memory space
-------------------------------------------------*/
void debug_write_dword(address_space *_space, offs_t address, UINT32 data, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* if this is a misaligned write, or if there are no dword writers, just read two words */
if ((address & 3) != 0)
{
if (space->endianness() == ENDIANNESS_LITTLE)
{
debug_write_word(space, address + 0, data >> 0, apply_translation);
debug_write_word(space, address + 2, data >> 16, apply_translation);
}
else
{
debug_write_word(space, address + 0, data >> 16, apply_translation);
debug_write_word(space, address + 2, data >> 0, apply_translation);
}
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns true, use that */
else if (device_memory(space->cpu)->write(space->spacenum(), address, 4, data))
;
/* otherwise, call the byte reading function for the translated address */
else
space->write_dword(address, data);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
global->memory_modified = true;
}
}
/*-------------------------------------------------
debug_write_qword - write a qword to the
specified memory space
-------------------------------------------------*/
void debug_write_qword(address_space *_space, offs_t address, UINT64 data, int apply_translation)
{
address_space *space = const_cast<address_space *>(_space);
debugcpu_private *global = space->machine->debugcpu_data;
/* mask against the logical byte mask */
address &= space->logbytemask();
/* if this is a misaligned write, or if there are no qword writers, just read two dwords */
if ((address & 7) != 0)
{
if (space->endianness() == ENDIANNESS_LITTLE)
{
debug_write_dword(space, address + 0, data >> 0, apply_translation);
debug_write_dword(space, address + 4, data >> 32, apply_translation);
}
else
{
debug_write_dword(space, address + 0, data >> 32, apply_translation);
debug_write_dword(space, address + 4, data >> 0, apply_translation);
}
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
space->set_debugger_access(global->debugger_access = true);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && !debug_cpu_translate(space, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns true, use that */
else if (device_memory(space->cpu)->write(space->spacenum(), address, 8, data))
;
/* otherwise, call the byte reading function for the translated address */
else
space->write_qword(address, data);
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
global->memory_modified = true;
}
}
/*-------------------------------------------------
debug_write_memory - write 1,2,4 or 8 bytes
to the specified memory space
-------------------------------------------------*/
void debug_write_memory(address_space *space, offs_t address, UINT64 data, int size, int apply_translation)
{
switch (size)
{
case 1: debug_write_byte(space, address, data, apply_translation); break;
case 2: debug_write_word(space, address, data, apply_translation); break;
case 4: debug_write_dword(space, address, data, apply_translation); break;
case 8: debug_write_qword(space, address, data, apply_translation); break;
}
}
/*-------------------------------------------------
debug_read_opcode - read 1,2,4 or 8 bytes at
the given offset from opcode space
-------------------------------------------------*/
UINT64 debug_read_opcode(address_space *_space, offs_t address, int size, int arg)
{
address_space *space = const_cast<address_space *>(_space);
UINT64 result = ~(UINT64)0 & (~(UINT64)0 >> (64 - 8*size)), result2;
debugcpu_private *global = space->machine->debugcpu_data;
/* keep in logical range */
address &= space->logbytemask();
/* return early if we got the result directly */
space->set_debugger_access(global->debugger_access = true);
device_memory_interface *memory;
if (space->cpu->interface(memory) && memory->readop(address, size, result2))
{
space->set_debugger_access(global->debugger_access = false);
return result2;
}
/* if we're bigger than the address bus, break into smaller pieces */
if (size > space->data_width() / 8)
{
int halfsize = size / 2;
UINT64 r0 = debug_read_opcode(space, address + 0, halfsize, arg);
UINT64 r1 = debug_read_opcode(space, address + halfsize, halfsize, arg);
if (space->endianness() == ENDIANNESS_LITTLE)
return r0 | (r1 << (8 * halfsize));
else
return r1 | (r0 << (8 * halfsize));
}
/* translate to physical first */
if (!debug_cpu_translate(space, TRANSLATE_FETCH_DEBUG, &address))
return result;
/* keep in physical range */
address &= space->bytemask();
switch (space->data_width() / 8 * 10 + size)
{
/* dump opcodes in bytes from a byte-sized bus */
case 11:
break;
/* dump opcodes in bytes from a word-sized bus */
case 21:
address ^= (space->endianness() == ENDIANNESS_LITTLE) ? BYTE_XOR_LE(0) : BYTE_XOR_BE(0);
break;
/* dump opcodes in words from a word-sized bus */
case 22:
break;
/* dump opcodes in bytes from a dword-sized bus */
case 41:
address ^= (space->endianness() == ENDIANNESS_LITTLE) ? BYTE4_XOR_LE(0) : BYTE4_XOR_BE(0);
break;
/* dump opcodes in words from a dword-sized bus */
case 42:
address ^= (space->endianness() == ENDIANNESS_LITTLE) ? WORD_XOR_LE(0) : WORD_XOR_BE(0);
break;
/* dump opcodes in dwords from a dword-sized bus */
case 44:
break;
/* dump opcodes in bytes from a qword-sized bus */
case 81:
address ^= (space->endianness() == ENDIANNESS_LITTLE) ? BYTE8_XOR_LE(0) : BYTE8_XOR_BE(0);
break;
/* dump opcodes in words from a qword-sized bus */
case 82:
address ^= (space->endianness() == ENDIANNESS_LITTLE) ? WORD2_XOR_LE(0) : WORD2_XOR_BE(0);
break;
/* dump opcodes in dwords from a qword-sized bus */
case 84:
address ^= (space->endianness() == ENDIANNESS_LITTLE) ? DWORD_XOR_LE(0) : DWORD_XOR_BE(0);
break;
/* dump opcodes in qwords from a qword-sized bus */
case 88:
break;
default:
fatalerror("debug_read_opcode: unknown type = %d", space->data_width() / 8 * 10 + size);
break;
}
/* turn on debugger access */
if (!global->debugger_access)
space->set_debugger_access(global->debugger_access = true);
/* switch off the size and handle unaligned accesses */
switch (size)
{
case 1:
result = (arg) ? space->direct().read_raw_byte(address) : space->direct().read_decrypted_byte(address);
break;
case 2:
result = (arg) ? space->direct().read_raw_word(address & ~1) : space->direct().read_decrypted_word(address & ~1);
if ((address & 1) != 0)
{
result2 = (arg) ? space->direct().read_raw_word((address & ~1) + 2) : space->direct().read_decrypted_word((address & ~1) + 2);
if (space->endianness() == ENDIANNESS_LITTLE)
result = (result >> (8 * (address & 1))) | (result2 << (16 - 8 * (address & 1)));
else
result = (result << (8 * (address & 1))) | (result2 >> (16 - 8 * (address & 1)));
result &= 0xffff;
}
break;
case 4:
result = (arg) ? space->direct().read_raw_dword(address & ~3) : space->direct().read_decrypted_dword(address & ~3);
if ((address & 3) != 0)
{
result2 = (arg) ? space->direct().read_raw_dword((address & ~3) + 4) : space->direct().read_decrypted_dword((address & ~3) + 4);
if (space->endianness() == ENDIANNESS_LITTLE)
result = (result >> (8 * (address & 3))) | (result2 << (32 - 8 * (address & 3)));
else
result = (result << (8 * (address & 3))) | (result2 >> (32 - 8 * (address & 3)));
result &= 0xffffffff;
}
break;
case 8:
result = (arg) ? space->direct().read_raw_qword(address & ~7) : space->direct().read_decrypted_qword(address & ~7);
if ((address & 7) != 0)
{
result2 = (arg) ? space->direct().read_raw_qword((address & ~7) + 8) : space->direct().read_decrypted_qword((address & ~7) + 8);
if (space->endianness() == ENDIANNESS_LITTLE)
result = (result >> (8 * (address & 7))) | (result2 << (64 - 8 * (address & 7)));
else
result = (result << (8 * (address & 7))) | (result2 >> (64 - 8 * (address & 7)));
}
break;
}
/* no longer accessing via the debugger */
space->set_debugger_access(global->debugger_access = false);
return result;
}
/***************************************************************************
INTERNAL HELPERS
***************************************************************************/
/*-------------------------------------------------
debug_cpu_exit - free all memory
-------------------------------------------------*/
static void debug_cpu_exit(running_machine &machine)
{
debugcpu_private *global = machine.debugcpu_data;
/* free the global symbol table */
if (global != NULL)
global_free(global->symtable);
}
/*-------------------------------------------------
on_vblank - called when a VBLANK hits
-------------------------------------------------*/
static void on_vblank(screen_device &device, void *param, bool vblank_state)
{
/* just set a global flag to be consumed later */
if (vblank_state)
device.machine->debugcpu_data->vblank_occurred = true;
}
/*-------------------------------------------------
reset_transient_flags - reset the transient
flags on all CPUs
-------------------------------------------------*/
static void reset_transient_flags(running_machine &machine)
{
/* loop over CPUs and reset the transient flags */
for (device_t *device = machine.m_devicelist.first(); device != NULL; device = device->next())
device->debug()->reset_transient_flag();
}
/*-------------------------------------------------
process_source_file - executes commands from
a source file
-------------------------------------------------*/
static void process_source_file(running_machine *machine)
{
debugcpu_private *global = machine->debugcpu_data;
/* loop until the file is exhausted or until we are executing again */
while (global->source_file != NULL && global->execution_state == EXECUTION_STATE_STOPPED)
{
char buf[512];
int i;
char *s;
/* stop at the end of file */
if (feof(global->source_file))
{
fclose(global->source_file);
global->source_file = NULL;
return;
}
/* fetch the next line */
memset(buf, 0, sizeof(buf));
fgets(buf, sizeof(buf), global->source_file);
/* strip out comments (text after '//') */
s = strstr(buf, "//");
if (s)
*s = '\0';
/* strip whitespace */
i = (int)strlen(buf);
while((i > 0) && (isspace((UINT8)buf[i-1])))
buf[--i] = '\0';
/* execute the command */
if (buf[0])
debug_console_execute_command(machine, buf, 1);
}
}
/***************************************************************************
EXPRESSION HANDLERS
***************************************************************************/
/*-------------------------------------------------
expression_get_device - return a device
based on a case insensitive tag search
-------------------------------------------------*/
static device_t *expression_get_device(running_machine *machine, const char *tag)
{
device_t *device;
for (device = machine->m_devicelist.first(); device != NULL; device = device->next())
if (mame_stricmp(device->tag(), tag) == 0)
return device;
return NULL;
}
/*-------------------------------------------------
expression_read_memory - read 1,2,4 or 8 bytes
at the given offset in the given address
space
-------------------------------------------------*/
static UINT64 expression_read_memory(void *param, const char *name, int spacenum, UINT32 address, int size)
{
running_machine *machine = (running_machine *)param;
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
device_t *device = NULL;
address_space *space;
switch (spacenum)
{
case EXPSPACE_PROGRAM_LOGICAL:
case EXPSPACE_DATA_LOGICAL:
case EXPSPACE_IO_LOGICAL:
case EXPSPACE_SPACE3_LOGICAL:
if (name != NULL)
device = expression_get_device(machine, name);
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
space = cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM + (spacenum - EXPSPACE_PROGRAM_LOGICAL));
if (space != NULL)
result = debug_read_memory(space, space->address_to_byte(address), size, true);
break;
case EXPSPACE_PROGRAM_PHYSICAL:
case EXPSPACE_DATA_PHYSICAL:
case EXPSPACE_IO_PHYSICAL:
case EXPSPACE_SPACE3_PHYSICAL:
if (name != NULL)
device = expression_get_device(machine, name);
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
space = cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM + (spacenum - EXPSPACE_PROGRAM_PHYSICAL));
if (space != NULL)
result = debug_read_memory(space, space->address_to_byte(address), size, false);
break;
case EXPSPACE_OPCODE:
case EXPSPACE_RAMWRITE:
if (name != NULL)
device = expression_get_device(machine, name);
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
result = expression_read_program_direct(cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM), (spacenum == EXPSPACE_OPCODE), address, size);
break;
case EXPSPACE_REGION:
if (name == NULL)
break;
result = expression_read_memory_region(machine, name, address, size);
break;
}
return result;
}
/*-------------------------------------------------
expression_read_program_direct - read memory
directly from an opcode or RAM pointer
-------------------------------------------------*/
static UINT64 expression_read_program_direct(address_space *_space, int opcode, offs_t address, int size)
{
address_space *space = const_cast<address_space *>(_space);
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
if (space != NULL)
{
UINT8 *base;
/* adjust the address into a byte address, but not if being called recursively */
if ((opcode & 2) == 0)
address = space->address_to_byte(address);
/* call ourself recursively until we are byte-sized */
if (size > 1)
{
int halfsize = size / 2;
UINT64 r0, r1;
/* read each half, from lower address to upper address */
r0 = expression_read_program_direct(space, opcode | 2, address + 0, halfsize);
r1 = expression_read_program_direct(space, opcode | 2, address + halfsize, halfsize);
/* assemble based on the target endianness */
if (space->endianness() == ENDIANNESS_LITTLE)
result = r0 | (r1 << (8 * halfsize));
else
result = r1 | (r0 << (8 * halfsize));
}
/* handle the byte-sized final requests */
else
{
/* lowmask specified which address bits are within the databus width */
offs_t lowmask = space->data_width() / 8 - 1;
/* get the base of memory, aligned to the address minus the lowbits */
if (opcode & 1)
base = (UINT8 *)space->direct().read_decrypted_ptr(address & ~lowmask);
else
base = (UINT8 *)space->get_read_ptr(address & ~lowmask);
/* if we have a valid base, return the appropriate byte */
if (base != NULL)
{
if (space->endianness() == ENDIANNESS_LITTLE)
result = base[BYTE8_XOR_LE(address) & lowmask];
else
result = base[BYTE8_XOR_BE(address) & lowmask];
}
}
}
return result;
}
/*-------------------------------------------------
expression_read_memory_region - read memory
from a memory region
-------------------------------------------------*/
static UINT64 expression_read_memory_region(running_machine *machine, const char *rgntag, offs_t address, int size)
{
const region_info *region = machine->region(rgntag);
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
/* make sure we get a valid base before proceeding */
if (region != NULL)
{
/* call ourself recursively until we are byte-sized */
if (size > 1)
{
int halfsize = size / 2;
UINT64 r0, r1;
/* read each half, from lower address to upper address */
r0 = expression_read_memory_region(machine, rgntag, address + 0, halfsize);
r1 = expression_read_memory_region(machine, rgntag, address + halfsize, halfsize);
/* assemble based on the target endianness */
if (region->endianness() == ENDIANNESS_LITTLE)
result = r0 | (r1 << (8 * halfsize));
else
result = r1 | (r0 << (8 * halfsize));
}
/* only process if we're within range */
else if (address < region->bytes())
{
/* lowmask specified which address bits are within the databus width */
UINT32 lowmask = region->width() - 1;
UINT8 *base = region->base() + (address & ~lowmask);
/* if we have a valid base, return the appropriate byte */
if (region->endianness() == ENDIANNESS_LITTLE)
result = base[BYTE8_XOR_LE(address) & lowmask];
else
result = base[BYTE8_XOR_BE(address) & lowmask];
}
}
return result;
}
/*-------------------------------------------------
expression_write_memory - write 1,2,4 or 8
bytes at the given offset in the given address
space
-------------------------------------------------*/
static void expression_write_memory(void *param, const char *name, int spacenum, UINT32 address, int size, UINT64 data)
{
running_machine *machine = (running_machine *)param;
device_t *device = NULL;
address_space *space;
switch (spacenum)
{
case EXPSPACE_PROGRAM_LOGICAL:
case EXPSPACE_DATA_LOGICAL:
case EXPSPACE_IO_LOGICAL:
case EXPSPACE_SPACE3_LOGICAL:
if (name != NULL)
device = expression_get_device(machine, name);
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
space = cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM + (spacenum - EXPSPACE_PROGRAM_LOGICAL));
if (space != NULL)
debug_write_memory(space, space->address_to_byte(address), data, size, true);
break;
case EXPSPACE_PROGRAM_PHYSICAL:
case EXPSPACE_DATA_PHYSICAL:
case EXPSPACE_IO_PHYSICAL:
case EXPSPACE_SPACE3_PHYSICAL:
if (name != NULL)
device = expression_get_device(machine, name);
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
space = cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM + (spacenum - EXPSPACE_PROGRAM_PHYSICAL));
if (space != NULL)
debug_write_memory(space, space->address_to_byte(address), data, size, false);
break;
case EXPSPACE_OPCODE:
case EXPSPACE_RAMWRITE:
if (name != NULL)
device = expression_get_device(machine, name);
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
expression_write_program_direct(cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM), (spacenum == EXPSPACE_OPCODE), address, size, data);
break;
case EXPSPACE_REGION:
if (name == NULL)
break;
expression_write_memory_region(machine, name, address, size, data);
break;
}
}
/*-------------------------------------------------
expression_write_program_direct - write memory
directly to an opcode or RAM pointer
-------------------------------------------------*/
static void expression_write_program_direct(address_space *_space, int opcode, offs_t address, int size, UINT64 data)
{
address_space *space = const_cast<address_space *>(_space);
if (space != NULL)
{
debugcpu_private *global = space->machine->debugcpu_data;
UINT8 *base;
/* adjust the address into a byte address, but not if being called recursively */
if ((opcode & 2) == 0)
address = space->address_to_byte(address);
/* call ourself recursively until we are byte-sized */
if (size > 1)
{
int halfsize = size / 2;
UINT64 r0, r1, halfmask;
/* break apart based on the target endianness */
halfmask = ~(UINT64)0 >> (64 - 8 * halfsize);
if (space->endianness() == ENDIANNESS_LITTLE)
{
r0 = data & halfmask;
r1 = (data >> (8 * halfsize)) & halfmask;
}
else
{
r0 = (data >> (8 * halfsize)) & halfmask;
r1 = data & halfmask;
}
/* write each half, from lower address to upper address */
expression_write_program_direct(space, opcode | 2, address + 0, halfsize, r0);
expression_write_program_direct(space, opcode | 2, address + halfsize, halfsize, r1);
}
/* handle the byte-sized final case */
else
{
/* lowmask specified which address bits are within the databus width */
offs_t lowmask = space->data_width() / 8 - 1;
/* get the base of memory, aligned to the address minus the lowbits */
if (opcode & 1)
base = (UINT8 *)space->direct().read_decrypted_ptr(address & ~lowmask);
else
base = (UINT8 *)space->get_read_ptr(address & ~lowmask);
/* if we have a valid base, write the appropriate byte */
if (base != NULL)
{
if (space->endianness() == ENDIANNESS_LITTLE)
base[BYTE8_XOR_LE(address) & lowmask] = data;
else
base[BYTE8_XOR_BE(address) & lowmask] = data;
global->memory_modified = true;
}
}
}
}
/*-------------------------------------------------
expression_write_memory_region - write memory
from a memory region
-------------------------------------------------*/
static void expression_write_memory_region(running_machine *machine, const char *rgntag, offs_t address, int size, UINT64 data)
{
debugcpu_private *global = machine->debugcpu_data;
const region_info *region = machine->region(rgntag);
/* make sure we get a valid base before proceeding */
if (region != NULL)
{
/* call ourself recursively until we are byte-sized */
if (size > 1)
{
int halfsize = size / 2;
UINT64 r0, r1, halfmask;
/* break apart based on the target endianness */
halfmask = ~(UINT64)0 >> (64 - 8 * halfsize);
if (region->endianness() == ENDIANNESS_LITTLE)
{
r0 = data & halfmask;
r1 = (data >> (8 * halfsize)) & halfmask;
}
else
{
r0 = (data >> (8 * halfsize)) & halfmask;
r1 = data & halfmask;
}
/* write each half, from lower address to upper address */
expression_write_memory_region(machine, rgntag, address + 0, halfsize, r0);
expression_write_memory_region(machine, rgntag, address + halfsize, halfsize, r1);
}
/* only process if we're within range */
else if (address < region->bytes())
{
/* lowmask specified which address bits are within the databus width */
UINT32 lowmask = region->width() - 1;
UINT8 *base = region->base() + (address & ~lowmask);
/* if we have a valid base, set the appropriate byte */
if (region->endianness() == ENDIANNESS_LITTLE)
base[BYTE8_XOR_LE(address) & lowmask] = data;
else
base[BYTE8_XOR_BE(address) & lowmask] = data;
global->memory_modified = true;
}
}
}
/*-------------------------------------------------
expression_validate - validate that the
provided expression references an
appropriate name
-------------------------------------------------*/
static expression_error::error_code expression_validate(void *param, const char *name, int space)
{
running_machine *machine = (running_machine *)param;
device_t *device = NULL;
switch (space)
{
case EXPSPACE_PROGRAM_LOGICAL:
case EXPSPACE_DATA_LOGICAL:
case EXPSPACE_IO_LOGICAL:
case EXPSPACE_SPACE3_LOGICAL:
if (name != NULL)
{
device = expression_get_device(machine, name);
if (device == NULL)
return expression_error::INVALID_MEMORY_NAME;
}
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
if (cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM + (space - EXPSPACE_PROGRAM_LOGICAL)) == NULL)
return expression_error::NO_SUCH_MEMORY_SPACE;
break;
case EXPSPACE_PROGRAM_PHYSICAL:
case EXPSPACE_DATA_PHYSICAL:
case EXPSPACE_IO_PHYSICAL:
case EXPSPACE_SPACE3_PHYSICAL:
if (name != NULL)
{
device = expression_get_device(machine, name);
if (device == NULL)
return expression_error::INVALID_MEMORY_NAME;
}
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
if (cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM + (space - EXPSPACE_PROGRAM_PHYSICAL)) == NULL)
return expression_error::NO_SUCH_MEMORY_SPACE;
break;
case EXPSPACE_OPCODE:
case EXPSPACE_RAMWRITE:
if (name != NULL)
{
device = expression_get_device(machine, name);
if (device == NULL)
return expression_error::INVALID_MEMORY_NAME;
}
if (device == NULL)
device = debug_cpu_get_visible_cpu(machine);
if (cpu_get_address_space(device, ADDRESS_SPACE_PROGRAM) == NULL)
return expression_error::NO_SUCH_MEMORY_SPACE;
break;
case EXPSPACE_REGION:
if (name == NULL)
return expression_error::MISSING_MEMORY_NAME;
if (memory_region(machine, name) == NULL)
return expression_error::INVALID_MEMORY_NAME;
break;
}
return expression_error::NONE;
}
/***************************************************************************
VARIABLE GETTERS/SETTERS
***************************************************************************/
/*-------------------------------------------------
get_beamx - get beam horizontal position
-------------------------------------------------*/
static UINT64 get_beamx(symbol_table &table, void *ref)
{
screen_device *screen = reinterpret_cast<screen_device *>(ref);
return (screen != NULL) ? screen->hpos() : 0;
}
/*-------------------------------------------------
get_beamy - get beam vertical position
-------------------------------------------------*/
static UINT64 get_beamy(symbol_table &table, void *ref)
{
screen_device *screen = reinterpret_cast<screen_device *>(ref);
return (screen != NULL) ? screen->vpos() : 0;
}
/*-------------------------------------------------
get_frame - get current frame number
-------------------------------------------------*/
static UINT64 get_frame(symbol_table &table, void *ref)
{
screen_device *screen = reinterpret_cast<screen_device *>(ref);
return (screen != NULL) ? screen->frame_number() : 0;
}
/*-------------------------------------------------
get_cpunum - getter callback for the
'cpunum' symbol
-------------------------------------------------*/
static UINT64 get_cpunum(symbol_table &table, void *ref)
{
running_machine *machine = reinterpret_cast<running_machine *>(table.globalref());
device_t *target = machine->debugcpu_data->visiblecpu;
device_execute_interface *exec = NULL;
int index = 0;
for (bool gotone = machine->m_devicelist.first(exec); gotone; gotone = exec->next(exec))
{
if (&exec->device() == target)
return index;
index++;
}
return 0;
}
//**************************************************************************
// DEVICE DEBUG
//**************************************************************************
//-------------------------------------------------
// device_debug - constructor
//-------------------------------------------------
device_debug::device_debug(device_t &device)
: m_device(device),
m_exec(NULL),
m_memory(NULL),
m_state(NULL),
m_disasm(NULL),
m_flags(0),
m_symtable(&device, debug_cpu_get_global_symtable(device.machine)),
m_instrhook(NULL),
m_dasm_override(NULL),
m_opwidth(0),
m_stepaddr(0),
m_stepsleft(0),
m_stopaddr(0),
m_stoptime(attotime_zero),
m_stopirq(0),
m_stopexception(0),
m_endexectime(attotime_zero),
m_pc_history_index(0),
m_bplist(NULL),
m_trace(NULL),
m_hotspots(NULL),
m_hotspot_count(0),
m_hotspot_threshhold(0)
{
memset(m_pc_history, 0, sizeof(m_pc_history));
memset(m_wplist, 0, sizeof(m_wplist));
// find out which interfaces we have to work with
device.interface(m_exec);
device.interface(m_memory);
device.interface(m_state);
device.interface(m_disasm);
// set up state-related stuff
if (m_state != NULL)
{
// add a global symbol for the current instruction pointer
if (m_exec != NULL)
m_symtable.add("cycles", NULL, get_cycles);
// add entries to enable/disable unmap reporting for each space
if (m_memory != NULL)
{
if (m_memory->space(AS_PROGRAM) != NULL)
m_symtable.add("logunmap", (void *)m_memory->space(AS_PROGRAM), get_logunmap, set_logunmap);
if (m_memory->space(AS_DATA) != NULL)
m_symtable.add("logunmapd", (void *)m_memory->space(AS_DATA), get_logunmap, set_logunmap);
if (m_memory->space(AS_IO) != NULL)
m_symtable.add("logunmapi", (void *)m_memory->space(AS_IO), get_logunmap, set_logunmap);
}
// add all registers into it
astring tempstr;
for (const device_state_entry *entry = m_state->state_first(); entry != NULL; entry = entry->next())
m_symtable.add(tempstr.cpy(entry->symbol()).tolower(), (void *)(FPTR)entry->index(), get_state, set_state);
}
// set up execution-related stuff
if (m_exec != NULL)
{
m_flags = DEBUG_FLAG_OBSERVING | DEBUG_FLAG_HISTORY;
m_opwidth = min_opcode_bytes();
// if no curpc, add one
if (m_state != NULL && m_symtable.find("curpc") == NULL)
m_symtable.add("curpc", NULL, get_current_pc);
}
}
//-------------------------------------------------
// ~device_debug - constructor
//-------------------------------------------------
device_debug::~device_debug()
{
// free breakpoints and watchpoints
breakpoint_clear_all();
watchpoint_clear_all();
}
//-------------------------------------------------
// start_hook - the scheduler calls this hook
// before beginning execution for the given device
//-------------------------------------------------
void device_debug::start_hook(attotime endtime)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert((m_device.machine->debug_flags & DEBUG_FLAG_ENABLED) != 0);
// stash a pointer to the current live CPU
assert(global->livecpu == NULL);
global->livecpu = &m_device;
// update the target execution end time
m_endexectime = endtime;
// if we're running, do some periodic updating
if (global->execution_state != EXECUTION_STATE_STOPPED)
{
// check for periodic updates
if (&m_device == global->visiblecpu && osd_ticks() > global->last_periodic_update_time + osd_ticks_per_second()/4)
{
m_device.machine->debug_view().update_all();
m_device.machine->debug_view().flush_osd_updates();
global->last_periodic_update_time = osd_ticks();
}
// check for pending breaks
else if (&m_device == global->breakcpu)
{
global->execution_state = EXECUTION_STATE_STOPPED;
global->breakcpu = NULL;
}
// if a VBLANK occurred, check on things
if (global->vblank_occurred)
{
global->vblank_occurred = false;
// if we were waiting for a VBLANK, signal it now
if ((m_flags & DEBUG_FLAG_STOP_VBLANK) != 0)
{
global->execution_state = EXECUTION_STATE_STOPPED;
debug_console_printf(m_device.machine, "Stopped at VBLANK\n");
}
// check for debug keypresses
else if (ui_input_pressed(m_device.machine, IPT_UI_DEBUG_BREAK))
global->visiblecpu->debug()->halt_on_next_instruction("User-initiated break\n");
}
}
// recompute the debugging mode
compute_debug_flags();
}
//-------------------------------------------------
// stop_hook - the scheduler calls this hook when
// ending execution for the given device
//-------------------------------------------------
void device_debug::stop_hook()
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(global->livecpu == &m_device);
// if we're stopping on a context switch, handle it now
if (m_flags & DEBUG_FLAG_STOP_CONTEXT)
{
global->execution_state = EXECUTION_STATE_STOPPED;
reset_transient_flags(*m_device.machine);
}
// clear the live CPU
global->livecpu = NULL;
}
//-------------------------------------------------
// interrupt_hook - called when an interrupt is
// acknowledged
//-------------------------------------------------
void device_debug::interrupt_hook(int irqline)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
// see if this matches a pending interrupt request
if ((m_flags & DEBUG_FLAG_STOP_INTERRUPT) != 0 && (m_stopirq == -1 || m_stopirq == irqline))
{
global->execution_state = EXECUTION_STATE_STOPPED;
debug_console_printf(m_device.machine, "Stopped on interrupt (CPU '%s', IRQ %d)\n", m_device.tag(), irqline);
compute_debug_flags();
}
}
//-------------------------------------------------
// exception_hook - called when an exception is
// generated
//-------------------------------------------------
void device_debug::exception_hook(int exception)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
// see if this matches a pending interrupt request
if ((m_flags & DEBUG_FLAG_STOP_EXCEPTION) != 0 && (m_stopexception == -1 || m_stopexception == exception))
{
global->execution_state = EXECUTION_STATE_STOPPED;
debug_console_printf(m_device.machine, "Stopped on exception (CPU '%s', exception %d)\n", m_device.tag(), exception);
compute_debug_flags();
}
}
//-------------------------------------------------
// instruction_hook - called by the CPU cores
// before executing each instruction
//-------------------------------------------------
void device_debug::instruction_hook(offs_t curpc)
{
running_machine &machine = *m_device.machine;
debugcpu_private *global = machine.debugcpu_data;
// note that we are in the debugger code
global->within_instruction_hook = true;
// update the history
m_pc_history[m_pc_history_index++ % HISTORY_SIZE] = curpc;
// are we tracing?
if (m_trace != NULL)
m_trace->update(curpc);
// per-instruction hook?
if (global->execution_state != EXECUTION_STATE_STOPPED && (m_flags & DEBUG_FLAG_HOOKED) != 0 && (*m_instrhook)(m_device, curpc))
global->execution_state = EXECUTION_STATE_STOPPED;
// handle single stepping
if (global->execution_state != EXECUTION_STATE_STOPPED && (m_flags & DEBUG_FLAG_STEPPING_ANY) != 0)
{
// is this an actual step?
if (m_stepaddr == ~0 || curpc == m_stepaddr)
{
// decrement the count and reset the breakpoint
m_stepsleft--;
m_stepaddr = ~0;
// if we hit 0, stop
if (m_stepsleft == 0)
global->execution_state = EXECUTION_STATE_STOPPED;
// update every 100 steps until we are within 200 of the end
else if ((m_flags & DEBUG_FLAG_STEPPING_OUT) == 0 && (m_stepsleft < 200 || m_stepsleft % 100 == 0))
{
machine.debug_view().update_all();
machine.debug_view().flush_osd_updates();
debugger_refresh_display(&machine);
}
}
}
// handle breakpoints
if (global->execution_state != EXECUTION_STATE_STOPPED && (m_flags & (DEBUG_FLAG_STOP_TIME | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP)) != 0)
{
// see if we hit a target time
if ((m_flags & DEBUG_FLAG_STOP_TIME) != 0 && attotime_compare(timer_get_time(&machine), m_stoptime) >= 0)
{
debug_console_printf(&machine, "Stopped at time interval %.1g\n", attotime_to_double(timer_get_time(&machine)));
global->execution_state = EXECUTION_STATE_STOPPED;
}
// check the temp running breakpoint and break if we hit it
else if ((m_flags & DEBUG_FLAG_STOP_PC) != 0 && m_stopaddr == curpc)
{
debug_console_printf(&machine, "Stopped at temporary breakpoint %X on CPU '%s'\n", m_stopaddr, m_device.tag());
global->execution_state = EXECUTION_STATE_STOPPED;
}
// check for execution breakpoints
else if ((m_flags & DEBUG_FLAG_LIVE_BP) != 0)
breakpoint_check(curpc);
}
// if we are supposed to halt, do it now
if (global->execution_state == EXECUTION_STATE_STOPPED)
{
bool firststop = true;
// load comments if we haven't yet
if (!global->comments_loaded)
{
debug_comment_load(m_device.machine);
global->comments_loaded = true;
}
// reset any transient state
reset_transient_flags(*m_device.machine);
global->breakcpu = NULL;
// remember the last visible CPU in the debugger
global->visiblecpu = &m_device;
// update all views
machine.debug_view().update_all();
debugger_refresh_display(m_device.machine);
// wait for the debugger; during this time, disable sound output
sound_mute(m_device.machine, true);
while (global->execution_state == EXECUTION_STATE_STOPPED)
{
// flush any pending updates before waiting again
machine.debug_view().flush_osd_updates();
// clear the memory modified flag and wait
global->memory_modified = false;
if (machine.debug_flags & DEBUG_FLAG_OSD_ENABLED)
machine.osd().wait_for_debugger(m_device, firststop);
else if (machine.debug_flags & DEBUG_FLAG_ENABLED)
debugint_wait_for_debugger(m_device, firststop);
firststop = false;
// if something modified memory, update the screen
if (global->memory_modified)
{
machine.debug_view().update_all(DVT_DISASSEMBLY);
debugger_refresh_display(m_device.machine);
}
// check for commands in the source file
process_source_file(m_device.machine);
// if an event got scheduled, resume
if (machine.scheduled_event_pending())
global->execution_state = EXECUTION_STATE_RUNNING;
}
sound_mute(m_device.machine, false);
// remember the last visible CPU in the debugger
global->visiblecpu = &m_device;
}
// handle step out/over on the instruction we are about to execute
if ((m_flags & (DEBUG_FLAG_STEPPING_OVER | DEBUG_FLAG_STEPPING_OUT)) != 0 && m_stepaddr == ~0)
prepare_for_step_overout(pc());
// no longer in debugger code
global->within_instruction_hook = false;
}
//-------------------------------------------------
// memory_read_hook - the memory system calls
// this hook when watchpoints are enabled and a
// memory read happens
//-------------------------------------------------
void device_debug::memory_read_hook(address_space &space, offs_t address, UINT64 mem_mask)
{
// check watchpoints
watchpoint_check(space, WATCHPOINT_READ, address, 0, mem_mask);
// check hotspots
if (m_hotspots != NULL)
hotspot_check(space, address);
}
//-------------------------------------------------
// memory_write_hook - the memory system calls
// this hook when watchpoints are enabled and a
// memory write happens
//-------------------------------------------------
void device_debug::memory_write_hook(address_space &space, offs_t address, UINT64 data, UINT64 mem_mask)
{
watchpoint_check(space, WATCHPOINT_WRITE, address, data, mem_mask);
}
//-------------------------------------------------
// set_instruction_hook - set a hook to be
// called on each instruction for a given device
//-------------------------------------------------
void device_debug::set_instruction_hook(debug_instruction_hook_func hook)
{
// set the hook and also the CPU's flag for fast knowledge of the hook
m_instrhook = hook;
if (hook != NULL)
m_flags |= DEBUG_FLAG_HOOKED;
else
m_flags &= ~DEBUG_FLAG_HOOKED;
}
//-------------------------------------------------
// disassemble - disassemble a line at a given
// PC on a given device
//-------------------------------------------------
offs_t device_debug::disassemble(char *buffer, offs_t pc, const UINT8 *oprom, const UINT8 *opram) const
{
offs_t result = 0;
// check for disassembler override
if (m_dasm_override != NULL)
result = (*m_dasm_override)(m_device, buffer, pc, oprom, opram, 0);
// if we have a disassembler, run it
if (result == 0 && m_disasm != NULL)
result = m_disasm->disassemble(buffer, pc, oprom, opram, 0);
// make sure we get good results
assert((result & DASMFLAG_LENGTHMASK) != 0);
#ifdef MAME_DEBUG
if (m_memory != NULL && m_disasm != NULL)
{
address_space *space = m_memory->space(AS_PROGRAM);
int bytes = space->address_to_byte(result & DASMFLAG_LENGTHMASK);
assert(bytes >= m_disasm->min_opcode_bytes());
assert(bytes <= m_disasm->max_opcode_bytes());
(void) bytes; // appease compiler
}
#endif
return result;
}
//-------------------------------------------------
// ignore - ignore/observe a given device
//-------------------------------------------------
void device_debug::ignore(bool ignore)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
if (ignore)
m_flags &= ~DEBUG_FLAG_OBSERVING;
else
m_flags |= DEBUG_FLAG_OBSERVING;
if (&m_device == global->livecpu && ignore)
go_next_device();
}
//-------------------------------------------------
// single_step - single step the device past the
// requested number of instructions
//-------------------------------------------------
void device_debug::single_step(int numsteps)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_stepsleft = numsteps;
m_stepaddr = ~0;
m_flags |= DEBUG_FLAG_STEPPING;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// single_step_over - single step the device over
// the requested number of instructions
//-------------------------------------------------
void device_debug::single_step_over(int numsteps)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_stepsleft = numsteps;
m_stepaddr = ~0;
m_flags |= DEBUG_FLAG_STEPPING_OVER;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// single_step_out - single step the device
// out of the current function
//-------------------------------------------------
void device_debug::single_step_out()
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_stepsleft = 100;
m_stepaddr = ~0;
m_flags |= DEBUG_FLAG_STEPPING_OUT;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// go - execute the device until it hits the given
// address
//-------------------------------------------------
void device_debug::go(offs_t targetpc)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_stopaddr = targetpc;
m_flags |= DEBUG_FLAG_STOP_PC;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// go_vblank - execute until the next VBLANK
//-------------------------------------------------
void device_debug::go_vblank()
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
global->vblank_occurred = false;
m_flags |= DEBUG_FLAG_STOP_VBLANK;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// go_interrupt - execute until the specified
// interrupt fires on the device
//-------------------------------------------------
void device_debug::go_interrupt(int irqline)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_stopirq = irqline;
m_flags |= DEBUG_FLAG_STOP_INTERRUPT;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// go_exception - execute until the specified
// exception fires on the visible CPU
//-------------------------------------------------
void device_debug::go_exception(int exception)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_stopexception = exception;
m_flags |= DEBUG_FLAG_STOP_EXCEPTION;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// go_milliseconds - execute until the specified
// delay elapses
//-------------------------------------------------
void device_debug::go_milliseconds(UINT64 milliseconds)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_stoptime = attotime_add(timer_get_time(m_device.machine), ATTOTIME_IN_MSEC(milliseconds));
m_flags |= DEBUG_FLAG_STOP_TIME;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// go_next_device - execute until we hit the next
// device
//-------------------------------------------------
void device_debug::go_next_device()
{
debugcpu_private *global = m_device.machine->debugcpu_data;
assert(m_exec != NULL);
m_flags |= DEBUG_FLAG_STOP_CONTEXT;
global->execution_state = EXECUTION_STATE_RUNNING;
}
//-------------------------------------------------
// halt_on_next_instruction - halt in the
// debugger on the next instruction
//-------------------------------------------------
void device_debug::halt_on_next_instruction(const char *fmt, ...)
{
debugcpu_private *global = m_device.machine->debugcpu_data;
va_list arg;
assert(m_exec != NULL);
// if something is pending on this CPU already, ignore this request
if (&m_device == global->breakcpu)
return;
// output the message to the console
va_start(arg, fmt);
debug_console_vprintf(m_device.machine, fmt, arg);
va_end(arg);
// if we are live, stop now, otherwise note that we want to break there
if (&m_device == global->livecpu)
{
global->execution_state = EXECUTION_STATE_STOPPED;
if (global->livecpu != NULL)
global->livecpu->debug()->compute_debug_flags();
}
else
global->breakcpu = &m_device;
}
//-------------------------------------------------
// breakpoint_set - set a new breakpoint,
// returning its index
//-------------------------------------------------
int device_debug::breakpoint_set(offs_t address, const char *condition, const char *action)
{
// allocate a new one
breakpoint *bp = auto_alloc(m_device.machine, breakpoint(m_symtable, m_device.machine->debugcpu_data->bpindex++, address, condition, action));
// hook it into our list
bp->m_next = m_bplist;
m_bplist = bp;
// update the flags and return the index
breakpoint_update_flags();
return bp->m_index;
}
//-------------------------------------------------
// breakpoint_clear - clear a breakpoint by index,
// returning true if we found it
//-------------------------------------------------
bool device_debug::breakpoint_clear(int index)
{
// scan the list to see if we own this breakpoint
for (breakpoint **bp = &m_bplist; *bp != NULL; bp = &(*bp)->m_next)
if ((*bp)->m_index == index)
{
breakpoint *deleteme = *bp;
*bp = deleteme->m_next;
auto_free(m_device.machine, deleteme);
breakpoint_update_flags();
return true;
}
// we don't own it, return false
return false;
}
//-------------------------------------------------
// breakpoint_clear_all - clear all breakpoints
//-------------------------------------------------
void device_debug::breakpoint_clear_all()
{
// clear the head until we run out
while (m_bplist != NULL)
breakpoint_clear(m_bplist->index());
}
//-------------------------------------------------
// breakpoint_enable - enable/disable a breakpoint
// by index, returning true if we found it
//-------------------------------------------------
bool device_debug::breakpoint_enable(int index, bool enable)
{
// scan the list to see if we own this breakpoint
for (breakpoint *bp = m_bplist; bp != NULL; bp = bp->next())
if (bp->m_index == index)
{
bp->m_enabled = enable;
breakpoint_update_flags();
return true;
}
// we don't own it, return false
return false;
}
//-------------------------------------------------
// breakpoint_enable_all - enable/disable all
// breakpoints
//-------------------------------------------------
void device_debug::breakpoint_enable_all(bool enable)
{
// apply the enable to all breakpoints we own
for (breakpoint *bp = m_bplist; bp != NULL; bp = bp->next())
breakpoint_enable(bp->index(), enable);
}
//-------------------------------------------------
// watchpoint_set - set a new watchpoint,
// returning its index
//-------------------------------------------------
int device_debug::watchpoint_set(address_space &space, int type, offs_t address, offs_t length, const char *condition, const char *action)
{
assert(space.spacenum() < ARRAY_LENGTH(m_wplist));
// allocate a new one
watchpoint *wp = auto_alloc(m_device.machine, watchpoint(m_symtable, m_device.machine->debugcpu_data->bpindex++, space, type, address, length, condition, action));
// hook it into our list
wp->m_next = m_wplist[space.spacenum()];
m_wplist[space.spacenum()] = wp;
// update the flags and return the index
watchpoint_update_flags(wp->m_space);
return wp->m_index;
}
//-------------------------------------------------
// watchpoint_clear - clear a watchpoint by index,
// returning true if we found it
//-------------------------------------------------
bool device_debug::watchpoint_clear(int index)
{
// scan the list to see if we own this breakpoint
for (int spacenum = 0; spacenum < ARRAY_LENGTH(m_wplist); spacenum++)
for (watchpoint **wp = &m_wplist[spacenum]; *wp != NULL; wp = &(*wp)->m_next)
if ((*wp)->m_index == index)
{
watchpoint *deleteme = *wp;
address_space &space = deleteme->m_space;
*wp = deleteme->m_next;
auto_free(m_device.machine, deleteme);
watchpoint_update_flags(space);
return true;
}
// we don't own it, return false
return false;
}
//-------------------------------------------------
// watchpoint_clear_all - clear all watchpoints
//-------------------------------------------------
void device_debug::watchpoint_clear_all()
{
// clear the head until we run out
for (int spacenum = 0; spacenum < ARRAY_LENGTH(m_wplist); spacenum++)
while (m_wplist[spacenum] != NULL)
watchpoint_clear(m_wplist[spacenum]->index());
}
//-------------------------------------------------
// watchpoint_enable - enable/disable a watchpoint
// by index, returning true if we found it
//-------------------------------------------------
bool device_debug::watchpoint_enable(int index, bool enable)
{
// scan the list to see if we own this watchpoint
for (int spacenum = 0; spacenum < ARRAY_LENGTH(m_wplist); spacenum++)
for (watchpoint *wp = m_wplist[spacenum]; wp != NULL; wp = wp->next())
if (wp->m_index == index)
{
wp->m_enabled = enable;
watchpoint_update_flags(wp->m_space);
return true;
}
// we don't own it, return false
return false;
}
//-------------------------------------------------
// watchpoint_enable_all - enable/disable all
// watchpoints
//-------------------------------------------------
void device_debug::watchpoint_enable_all(bool enable)
{
// apply the enable to all watchpoints we own
for (int spacenum = 0; spacenum < ARRAY_LENGTH(m_wplist); spacenum++)
for (watchpoint *wp = m_wplist[spacenum]; wp != NULL; wp = wp->next())
watchpoint_enable(wp->index(), enable);
}
//-------------------------------------------------
// hotspot_track - enable/disable tracking of
// hotspots
//-------------------------------------------------
void device_debug::hotspot_track(int numspots, int threshhold)
{
// if we already have tracking enabled, kill it
auto_free(m_device.machine, m_hotspots);
m_hotspots = NULL;
// only start tracking if we have a non-zero count
if (numspots > 0)
{
// allocate memory for hotspots
m_hotspots = auto_alloc_array(m_device.machine, hotspot_entry, numspots);
memset(m_hotspots, 0xff, sizeof(*m_hotspots) * numspots);
// fill in the info
m_hotspot_count = numspots;
m_hotspot_threshhold = threshhold;
}
// update the watchpoint flags to include us
if (m_memory != NULL && m_memory->space(AS_PROGRAM) != NULL)
watchpoint_update_flags(*m_memory->space(AS_PROGRAM));
}
//-------------------------------------------------
// history_pc - return an entry from the PC
// history
//-------------------------------------------------
offs_t device_debug::history_pc(int index) const
{
if (index > 0)
index = 0;
if (index <= -HISTORY_SIZE)
index = -HISTORY_SIZE + 1;
return m_pc_history[(m_pc_history_index + ARRAY_LENGTH(m_pc_history) - 1 + index) % ARRAY_LENGTH(m_pc_history)];
}
//-------------------------------------------------
// comment_add - adds a comment to the list at
// the given address
//-------------------------------------------------
void device_debug::comment_add(offs_t addr, const char *comment, rgb_t color)
{
// create a new item for the list
UINT32 crc = compute_opcode_crc32(addr);
dasm_comment *newcomment = auto_alloc(m_device.machine, dasm_comment(comment, addr, color, crc));
// figure out where to insert it
dasm_comment *prev = NULL;
dasm_comment *curr;
for (curr = m_comment_list.first(); curr != NULL; prev = curr, curr = curr->next())
if (curr->m_address >= addr)
break;
// we could be the new head
if (prev == NULL)
m_comment_list.prepend(*newcomment);
// or else we just insert ourselves here
else
{
newcomment->m_next = prev->m_next;
prev->m_next = newcomment;
}
// scan forward from here to delete any exact matches
for ( ; curr != NULL && curr->m_address == addr; curr = curr->next())
if (curr->m_crc == crc)
{
m_comment_list.remove(*curr);
break;
}
// force an update
m_comment_change++;
}
//-------------------------------------------------
// comment_remove - removes a comment at the
// given address with a matching CRC
//-------------------------------------------------
bool device_debug::comment_remove(offs_t addr)
{
// scan the list for a match
UINT32 crc = compute_opcode_crc32(addr);
for (dasm_comment *curr = m_comment_list.first(); curr != NULL; curr = curr->next())
{
// if we're past the address, we failed
if (curr->m_address > addr)
break;
// find an exact match
if (curr->m_address == addr && curr->m_crc == crc)
{
// remove it and force an update
m_comment_list.remove(*curr);
m_comment_change++;
return true;
}
}
// failure is an option
return false;
}
//-------------------------------------------------
// comment_text - return the text of a comment
//-------------------------------------------------
const char *device_debug::comment_text(offs_t addr) const
{
// scan the list for a match
UINT32 crc = compute_opcode_crc32(addr);
for (dasm_comment *curr = m_comment_list.first(); curr != NULL; curr = curr->next())
{
// if we're past the address, we failed
if (curr->m_address > addr)
break;
// find an exact match
if (curr->m_address == addr && curr->m_crc == crc)
return curr->m_text;
}
// failure is an option
return NULL;
}
//-------------------------------------------------
// comment_export - export the comments to the
// given XML data node
//-------------------------------------------------
bool device_debug::comment_export(xml_data_node &curnode)
{
// iterate through the comments
astring crc_buf;
for (dasm_comment *curr = m_comment_list.first(); curr != NULL; curr = curr->next())
{
xml_data_node *datanode = xml_add_child(&curnode, "comment", xml_normalize_string(curr->m_text));
if (datanode == NULL)
return false;
xml_set_attribute_int(datanode, "address", curr->m_address);
xml_set_attribute_int(datanode, "color", curr->m_color);
crc_buf.printf("%08X", curr->m_crc);
xml_set_attribute(datanode, "crc", crc_buf);
}
return true;
}
//-------------------------------------------------
// comment_import - import the comments from the
// given XML data node
//-------------------------------------------------
bool device_debug::comment_import(xml_data_node &cpunode)
{
// iterate through nodes
for (xml_data_node *datanode = xml_get_sibling(cpunode.child, "comment"); datanode; datanode = xml_get_sibling(datanode->next, "comment"))
{
// extract attributes
offs_t address = xml_get_attribute_int(datanode, "address", 0);
rgb_t color = xml_get_attribute_int(datanode, "color", 0);
UINT32 crc;
sscanf(xml_get_attribute_string(datanode, "crc", 0), "%08X", &crc);
// add the new comment; we assume they were saved ordered
m_comment_list.append(*auto_alloc(m_device.machine, dasm_comment(datanode->value, address, color, crc)));
}
return true;
}
//-------------------------------------------------
// comment_dump - logs comments to the error.log
// at a given address
//-------------------------------------------------
void device_debug::comment_dump(offs_t addr)
{
// determine the CRC at the given address (if valid)
UINT32 crc = (addr == ~0) ? 0 : compute_opcode_crc32(addr);
// dump everything that matches
bool found = false;
for (dasm_comment *curr = m_comment_list.first(); curr != NULL; curr = curr->next())
if (addr == ~0 || (curr->m_address == addr && curr->m_crc == crc))
{
found = true;
logerror("%08X %08X - %s\n", curr->m_address, curr->m_crc, curr->m_text.cstr());
}
// if nothing found, indicate as much
if (!found)
logerror("No comment exists for address : 0x%x\n", addr);
}
//-------------------------------------------------
// compute_opcode_crc32 - determine the CRC of
// the opcode bytes at the given address
//-------------------------------------------------
UINT32 device_debug::compute_opcode_crc32(offs_t address) const
{
// no memory interface, just fail
if (m_memory == NULL)
return 0;
// no program interface, just fail
address_space *space = m_memory->space(AS_PROGRAM);
if (space == NULL)
return 0;
// zero out the buffers
UINT8 opbuf[64], argbuf[64];
memset(opbuf, 0x00, sizeof(opbuf));
memset(argbuf, 0x00, sizeof(argbuf));
// fetch the bytes up to the maximum
int maxbytes = m_disasm->max_opcode_bytes();
for (int index = 0; index < maxbytes; index++)
{
opbuf[index] = debug_read_opcode(space, address + index, 1, false);
argbuf[index] = debug_read_opcode(space, address + index, 1, true);
}
// disassemble and then convert to bytes
char buff[256];
int numbytes = disassemble(buff, address & space->logaddrmask(), opbuf, argbuf) & DASMFLAG_LENGTHMASK;
numbytes = space->address_to_byte(numbytes);
// return a CRC of the resulting bytes
return crc32(0, argbuf, numbytes);
}
//-------------------------------------------------
// trace - trace execution of a given device
//-------------------------------------------------
void device_debug::trace(FILE *file, bool trace_over, const char *action)
{
// delete any existing tracers
auto_free(m_device.machine, m_trace);
m_trace = NULL;
// if we have a new file, make a new tracer
if (file != NULL)
m_trace = auto_alloc(m_device.machine, tracer(*this, *file, trace_over, action));
}
//-------------------------------------------------
// trace_printf - output data into the given
// device's tracefile, if tracing
//-------------------------------------------------
void device_debug::trace_printf(const char *fmt, ...)
{
if (m_trace != NULL)
{
va_list va;
va_start(va, fmt);
m_trace->vprintf(fmt, va);
va_end(va);
}
}
//-------------------------------------------------
// compute_debug_flags - compute the global
// debug flags for optimal efficiency
//-------------------------------------------------
void device_debug::compute_debug_flags()
{
running_machine *machine = m_device.machine;
debugcpu_private *global = machine->debugcpu_data;
// clear out global flags by default, keep DEBUG_FLAG_OSD_ENABLED
machine->debug_flags &= DEBUG_FLAG_OSD_ENABLED;
machine->debug_flags |= DEBUG_FLAG_ENABLED;
// if we are ignoring this CPU, or if events are pending, we're done
if ((m_flags & DEBUG_FLAG_OBSERVING) == 0 || machine->scheduled_event_pending() || machine->save_or_load_pending())
return;
// if we're stopped, keep calling the hook
if (global->execution_state == EXECUTION_STATE_STOPPED)
machine->debug_flags |= DEBUG_FLAG_CALL_HOOK;
// if we're tracking history, or we're hooked, or stepping, or stopping at a breakpoint
// make sure we call the hook
if ((m_flags & (DEBUG_FLAG_HISTORY | DEBUG_FLAG_HOOKED | DEBUG_FLAG_STEPPING_ANY | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP)) != 0)
machine->debug_flags |= DEBUG_FLAG_CALL_HOOK;
// also call if we are tracing
if (m_trace != NULL)
machine->debug_flags |= DEBUG_FLAG_CALL_HOOK;
// if we are stopping at a particular time and that time is within the current timeslice, we need to be called
if ((m_flags & DEBUG_FLAG_STOP_TIME) && attotime_compare(m_endexectime, m_stoptime) <= 0)
machine->debug_flags |= DEBUG_FLAG_CALL_HOOK;
}
//-------------------------------------------------
// prepare_for_step_overout - prepare things for
// stepping over an instruction
//-------------------------------------------------
void device_debug::prepare_for_step_overout(offs_t pc)
{
// disassemble the current instruction and get the flags
astring dasmbuffer;
offs_t dasmresult = dasm_wrapped(dasmbuffer, pc);
// if flags are supported and it's a call-style opcode, set a temp breakpoint after that instruction
if ((dasmresult & DASMFLAG_SUPPORTED) != 0 && (dasmresult & DASMFLAG_STEP_OVER) != 0)
{
int extraskip = (dasmresult & DASMFLAG_OVERINSTMASK) >> DASMFLAG_OVERINSTSHIFT;
pc += dasmresult & DASMFLAG_LENGTHMASK;
// if we need to skip additional instructions, advance as requested
while (extraskip-- > 0)
pc += dasm_wrapped(dasmbuffer, pc) & DASMFLAG_LENGTHMASK;
m_stepaddr = pc;
}
// if we're stepping out and this isn't a step out instruction, reset the steps until stop to a high number
if ((m_flags & DEBUG_FLAG_STEPPING_OUT) != 0)
{
if ((dasmresult & DASMFLAG_SUPPORTED) != 0 && (dasmresult & DASMFLAG_STEP_OUT) == 0)
m_stepsleft = 100;
else
m_stepsleft = 1;
}
}
//-------------------------------------------------
// breakpoint_update_flags - update the device's
// breakpoint flags
//-------------------------------------------------
void device_debug::breakpoint_update_flags()
{
// see if there are any enabled breakpoints
m_flags &= ~DEBUG_FLAG_LIVE_BP;
for (breakpoint *bp = m_bplist; bp != NULL; bp = bp->m_next)
if (bp->m_enabled)
{
m_flags |= DEBUG_FLAG_LIVE_BP;
break;
}
// push the flags out globally
debugcpu_private *global = m_device.machine->debugcpu_data;
if (global->livecpu != NULL)
global->livecpu->debug()->compute_debug_flags();
}
//-------------------------------------------------
// breakpoint_check - check the breakpoints for
// a given device
//-------------------------------------------------
void device_debug::breakpoint_check(offs_t pc)
{
// see if we match
for (breakpoint *bp = m_bplist; bp != NULL; bp = bp->m_next)
if (bp->hit(pc))
{
// halt in the debugger by default
debugcpu_private *global = m_device.machine->debugcpu_data;
global->execution_state = EXECUTION_STATE_STOPPED;
// if we hit, evaluate the action
if (bp->m_action)
debug_console_execute_command(m_device.machine, bp->m_action, 0);
// print a notification, unless the action made us go again
if (global->execution_state == EXECUTION_STATE_STOPPED)
debug_console_printf(m_device.machine, "Stopped at breakpoint %X\n", bp->m_index);
break;
}
}
//-------------------------------------------------
// watchpoint_update_flags - update the device's
// watchpoint flags
//-------------------------------------------------
void device_debug::watchpoint_update_flags(address_space &space)
{
// if hotspots are enabled, turn on all reads
bool enableread = false;
if (m_hotspots != NULL)
enableread = true;
// see if there are any enabled breakpoints
bool enablewrite = false;
for (watchpoint *wp = m_wplist[space.spacenum()]; wp != NULL; wp = wp->m_next)
if (wp->m_enabled)
{
if (wp->m_type & WATCHPOINT_READ)
enableread = true;
if (wp->m_type & WATCHPOINT_WRITE)
enablewrite = true;
}
// push the flags out globally
space.enable_read_watchpoints(enableread);
space.enable_write_watchpoints(enablewrite);
}
//-------------------------------------------------
// watchpoint_check - check the watchpoints
// for a given CPU and address space
//-------------------------------------------------
void device_debug::watchpoint_check(address_space &space, int type, offs_t address, UINT64 value_to_write, UINT64 mem_mask)
{
debugcpu_private *global = space.machine->debugcpu_data;
// if we're within debugger code, don't stop
if (global->within_instruction_hook || global->debugger_access)
return;
global->within_instruction_hook = true;
// adjust address, size & value_to_write based on mem_mask.
offs_t size = 0;
if (mem_mask != 0)
{
int bus_size = space.data_width() / 8;
int address_offset = 0;
while (address_offset < bus_size && (mem_mask & 0xff) == 0)
{
address_offset++;
value_to_write >>= 8;
mem_mask >>= 8;
}
while (mem_mask != 0)
{
size++;
mem_mask >>= 8;
}
if (space.endianness() == ENDIANNESS_LITTLE)
address += address_offset;
else
address += bus_size - size - address_offset;
}
// if we are a write watchpoint, stash the value that will be written
global->wpaddr = address;
if (type & WATCHPOINT_WRITE)
global->wpdata = value_to_write;
// see if we match
for (watchpoint *wp = m_wplist[space.spacenum()]; wp != NULL; wp = wp->m_next)
if (wp->hit(type, address, size))
{
// halt in the debugger by default
global->execution_state = EXECUTION_STATE_STOPPED;
// if we hit, evaluate the action
if (wp->m_action)
debug_console_execute_command(space.machine, wp->m_action, 0);
// print a notification, unless the action made us go again
if (global->execution_state == EXECUTION_STATE_STOPPED)
{
static const char *const sizes[] =
{
"0bytes", "byte", "word", "3bytes", "dword", "5bytes", "6bytes", "7bytes", "qword"
};
offs_t pc = (space.cpu->debug()->m_state != NULL) ? space.cpu->debug()->m_state->pc() : 0;
astring buffer;
if (type & WATCHPOINT_WRITE)
{
buffer.printf("Stopped at watchpoint %X writing %s to %08X (PC=%X)", wp->m_index, sizes[size], space.byte_to_address(address), pc);
if (value_to_write >> 32)
buffer.catprintf(" (data=%X%08X)", (UINT32)(value_to_write >> 32), (UINT32)value_to_write);
else
buffer.catprintf(" (data=%X)", (UINT32)value_to_write);
}
else
buffer.printf("Stopped at watchpoint %X reading %s from %08X (PC=%X)", wp->m_index, sizes[size], space.byte_to_address(address), pc);
debug_console_printf(space.machine, "%s\n", buffer.cstr());
space.cpu->debug()->compute_debug_flags();
}
break;
}
global->within_instruction_hook = false;
}
//-------------------------------------------------
// hotspot_check - check for hotspots on a
// memory read access
//-------------------------------------------------
void device_debug::hotspot_check(address_space &space, offs_t address)
{
offs_t curpc = pc();
// see if we have a match in our list
int hotindex;
for (hotindex = 0; hotindex < m_hotspot_count; hotindex++)
if (m_hotspots[hotindex].m_access == address && m_hotspots[hotindex].m_pc == curpc && m_hotspots[hotindex].m_space == &space)
break;
// if we didn't find any, make a new entry
if (hotindex == m_hotspot_count)
{
// if the bottom of the list is over the threshhold, print it
hotspot_entry &spot = m_hotspots[m_hotspot_count - 1];
if (spot.m_count > m_hotspot_threshhold)
debug_console_printf(space.machine, "Hotspot @ %s %08X (PC=%08X) hit %d times (fell off bottom)\n", space.name(), spot.m_access, spot.m_pc, spot.m_count);
// move everything else down and insert this one at the top
memmove(&m_hotspots[1], &m_hotspots[0], sizeof(m_hotspots[0]) * (m_hotspot_count - 1));
m_hotspots[0].m_access = address;
m_hotspots[0].m_pc = curpc;
m_hotspots[0].m_space = &space;
m_hotspots[0].m_count = 1;
}
// if we did find one, increase the count and move it to the top
else
{
m_hotspots[hotindex].m_count++;
if (hotindex != 0)
{
hotspot_entry temp = m_hotspots[hotindex];
memmove(&m_hotspots[1], &m_hotspots[0], sizeof(m_hotspots[0]) * hotindex);
m_hotspots[0] = temp;
}
}
}
//-------------------------------------------------
// dasm_wrapped - wraps calls to the disassembler
// by fetching the opcode bytes to a temporary
// buffer and then disassembling them
//-------------------------------------------------
UINT32 device_debug::dasm_wrapped(astring &buffer, offs_t pc)
{
assert(m_memory != NULL && m_disasm != NULL);
// determine the adjusted PC
address_space *space = m_memory->space(AS_PROGRAM);
offs_t pcbyte = space->address_to_byte(pc) & space->bytemask();
// fetch the bytes up to the maximum
UINT8 opbuf[64], argbuf[64];
int maxbytes = max_opcode_bytes();
for (int numbytes = 0; numbytes < maxbytes; numbytes++)
{
opbuf[numbytes] = debug_read_opcode(space, pcbyte + numbytes, 1, false);
argbuf[numbytes] = debug_read_opcode(space, pcbyte + numbytes, 1, true);
}
// disassemble to our buffer
buffer.expand(200);
return disassemble(buffer.text, pc, opbuf, argbuf);
}
//-------------------------------------------------
// get_current_pc - getter callback for a device's
// current instruction pointer
//-------------------------------------------------
UINT64 device_debug::get_current_pc(symbol_table &table, void *ref)
{
device_t *device = reinterpret_cast<device_t *>(table.globalref());
return device->debug()->pc();
}
//-------------------------------------------------
// get_cycles - getter callback for the
// 'cycles' symbol
//-------------------------------------------------
UINT64 device_debug::get_cycles(symbol_table &table, void *ref)
{
device_t *device = reinterpret_cast<device_t *>(table.globalref());
return device->debug()->m_exec->cycles_remaining();
}
//-------------------------------------------------
// get_logunmap - getter callback for the logumap
// symbols
//-------------------------------------------------
UINT64 device_debug::get_logunmap(symbol_table &table, void *ref)
{
address_space *space = reinterpret_cast<address_space *>(table.globalref());
return space->log_unmap();
}
//-------------------------------------------------
// set_logunmap - setter callback for the logumap
// symbols
//-------------------------------------------------
void device_debug::set_logunmap(symbol_table &table, void *ref, UINT64 value)
{
address_space *space = reinterpret_cast<address_space *>(table.globalref());
space->set_log_unmap(value ? true : false);
}
//-------------------------------------------------
// get_state - getter callback for a device's
// state symbols
//-------------------------------------------------
UINT64 device_debug::get_state(symbol_table &table, void *ref)
{
device_t *device = reinterpret_cast<device_t *>(table.globalref());
return device->debug()->m_state->state(reinterpret_cast<FPTR>(ref));
}
//-------------------------------------------------
// set_state - setter callback for a device's
// state symbols
//-------------------------------------------------
void device_debug::set_state(symbol_table &table, void *ref, UINT64 value)
{
device_t *device = reinterpret_cast<device_t *>(table.globalref());
device->debug()->m_state->set_state(reinterpret_cast<FPTR>(ref), value);
}
//**************************************************************************
// DEBUG BREAKPOINT
//**************************************************************************
//-------------------------------------------------
// breakpoint - constructor
//-------------------------------------------------
device_debug::breakpoint::breakpoint(symbol_table &symbols, int index, offs_t address, const char *condition, const char *action)
: m_next(NULL),
m_index(index),
m_enabled(true),
m_address(address),
m_condition(&symbols, (condition != NULL) ? condition : "1"),
m_action((action != NULL) ? action : "")
{
}
//-------------------------------------------------
// hit - detect a hit
//-------------------------------------------------
bool device_debug::breakpoint::hit(offs_t pc)
{
// don't hit if disabled
if (!m_enabled)
return false;
// must match our address
if (m_address != pc)
return false;
// must satisfy the condition
if (!m_condition.is_empty())
{
try
{
return (m_condition.execute() != 0);
}
catch (expression_error &)
{
return false;
}
}
return true;
}
//**************************************************************************
// DEBUG WATCHPOINT
//**************************************************************************
//-------------------------------------------------
// watchpoint - constructor
//-------------------------------------------------
device_debug::watchpoint::watchpoint(symbol_table &symbols, int index, address_space &space, int type, offs_t address, offs_t length, const char *condition, const char *action)
: m_next(NULL),
m_space(space),
m_index(index),
m_enabled(true),
m_type(type),
m_address(space.address_to_byte(address) & space.bytemask()),
m_length(space.address_to_byte(length)),
m_condition(&symbols, (condition != NULL) ? condition : "1"),
m_action((action != NULL) ? action : "")
{
}
//-------------------------------------------------
// hit - detect a hit
//-------------------------------------------------
bool device_debug::watchpoint::hit(int type, offs_t address, int size)
{
// don't hit if disabled
if (!m_enabled)
return false;
// must match the type
if ((m_type & type) == 0)
return false;
// must match our address
if (address + size <= m_address || address >= m_address + m_length)
return false;
// must satisfy the condition
if (!m_condition.is_empty())
{
try
{
return (m_condition.execute() != 0);
}
catch (expression_error &)
{
return false;
}
}
return true;
}
//**************************************************************************
// TRACER
//**************************************************************************
//-------------------------------------------------
// tracer - constructor
//-------------------------------------------------
device_debug::tracer::tracer(device_debug &debug, FILE &file, bool trace_over, const char *action)
: m_debug(debug),
m_file(file),
m_action((action != NULL) ? action : ""),
m_loops(0),
m_nextdex(0),
m_trace_over(trace_over),
m_trace_over_target(~0)
{
memset(m_history, 0, sizeof(m_history));
}
//-------------------------------------------------
// ~tracer - destructor
//-------------------------------------------------
device_debug::tracer::~tracer()
{
// make sure we close the file if we can
fclose(&m_file);
}
//-------------------------------------------------
// update - log to the tracefile the data for a
// given instruction
//-------------------------------------------------
void device_debug::tracer::update(offs_t pc)
{
// are we in trace over mode and in a subroutine?
if (m_trace_over && m_trace_over_target != ~0)
{
if (m_trace_over_target != pc)
return;
m_trace_over_target = ~0;
}
// check for a loop condition
int count = 0;
for (int index = 0; index < ARRAY_LENGTH(m_history); index++)
if (m_history[index] == pc)
count++;
// if more than 1 hit, just up the loop count and get out
if (count > 1)
{
m_loops++;
return;
}
// if we just finished looping, indicate as much
if (m_loops != 0)
fprintf(&m_file, "\n (loops for %d instructions)\n\n", m_loops);
m_loops = 0;
// execute any trace actions first
if (m_action)
debug_console_execute_command(m_debug.m_device.machine, m_action, 0);
// print the address
astring buffer;
int logaddrchars = m_debug.logaddrchars();
buffer.printf("%0*X: ", logaddrchars, pc);
// print the disassembly
astring dasm;
offs_t dasmresult = m_debug.dasm_wrapped(dasm, pc);
buffer.cat(dasm);
// output the result
fprintf(&m_file, "%s\n", buffer.cstr());
// do we need to step the trace over this instruction?
if (m_trace_over && (dasmresult & DASMFLAG_SUPPORTED) != 0 && (dasmresult & DASMFLAG_STEP_OVER) != 0)
{
int extraskip = (dasmresult & DASMFLAG_OVERINSTMASK) >> DASMFLAG_OVERINSTSHIFT;
offs_t trace_over_target = pc + (dasmresult & DASMFLAG_LENGTHMASK);
// if we need to skip additional instructions, advance as requested
while (extraskip-- > 0)
trace_over_target += m_debug.dasm_wrapped(dasm, trace_over_target) & DASMFLAG_LENGTHMASK;
m_trace_over_target = trace_over_target;
}
// log this PC
m_nextdex = (m_nextdex + 1) % TRACE_LOOPS;
m_history[m_nextdex] = pc;
}
//-------------------------------------------------
// vprintf - generic print to the trace file
//-------------------------------------------------
void device_debug::tracer::vprintf(const char *format, va_list va)
{
// pass through to the file
vfprintf(&m_file, format, va);
}
//-------------------------------------------------
// flush - flush any pending changes to the trace
// file
//-------------------------------------------------
void device_debug::tracer::flush()
{
fflush(&m_file);
}
//-------------------------------------------------
// dasm_comment - constructor
//-------------------------------------------------
device_debug::dasm_comment::dasm_comment(const char *text, offs_t address, rgb_t color, UINT32 crc)
: m_next(NULL),
m_address(address),
m_color(color),
m_crc(crc),
m_text(text)
{
}
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