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92f3053105
mame/src/emu/debug/debugcpu.c
Aaron Giles 92f3053105 Major cpuintrf changes: 
* added a set of cpu_* calls which accept a CPU device object;
  these are now the preferred means of manipulating a CPU

* removed the cpunum_* calls; added an array of cpu[] to the
  running_machine object; converted all existing cpunum_* calls
  to cpu_* calls, pulling the CPU device object from the new
  array in the running_machine

* removed the activecpu_* calls; added an activecpu member to
  the running_machine object; converted all existing activecpu_*
  calls to cpu_* calls, pulling the active CPU device object
  from the running_machine

* changed cpuintrf_push_context() to cpu_push_context(), taking
  a CPU object pointer; changed cpuintrf_pop_context() to
  cpu_pop_context(); eventually these will go away

* many other similar changes moving toward a model where all CPU
  references are done by the CPU object and not by index
2008-11-10 07:42:09 +00:00

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/*********************************************************************
debugcpu.c
Debugger CPU/memory interface engine.
Copyright Nicola Salmoria and the MAME Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************
Future work:
- enable history to be enabled/disabled to improve performance
*********************************************************************/
#include "osdepend.h"
#include "driver.h"
#include "debugcpu.h"
#include "debugcmd.h"
#include "debugcmt.h"
#include "debugcon.h"
#include "express.h"
#include "debugvw.h"
#include "debugger.h"
#include "deprecat.h"
#include "uiinput.h"
#include "machine/eeprom.h"
#include <ctype.h>
/***************************************************************************
CONSTANTS
***************************************************************************/
#define NUM_TEMP_VARIABLES 10
enum
{
EXECUTION_STATE_STOPPED,
EXECUTION_STATE_RUNNING
};
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef struct _debugger_private debugger_private;
struct _debugger_private
{
debug_cpu_info cpuinfo[MAX_CPU];
debug_cpu_info *livecpu;
debug_cpu_info *visiblecpu;
debug_cpu_info *breakcpu;
UINT8 within_instruction_hook;
UINT8 vblank_occurred;
UINT8 memory_modified;
UINT8 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;
};
/***************************************************************************
LOCAL VARIABLES
***************************************************************************/
FILE *debug_source_file;
symbol_table *global_symtable;
static debugger_private global;
/***************************************************************************
FUNCTION PROTOTYPES
***************************************************************************/
static void debug_cpu_exit(running_machine *machine);
static void perform_trace(running_machine *machine, debug_cpu_info *info);
static void prepare_for_step_overout(running_machine *machine, debug_cpu_info *info);
static void process_source_file(running_machine *machine);
static void breakpoint_check(running_machine *machine, debug_cpu_info *info, offs_t pc);
static void watchpoint_check(running_machine *machine, int cpunum, int spacenum, int type, offs_t address, UINT64 value_to_write, UINT64 mem_mask);
static void check_hotspots(running_machine *machine, int cpunum, int spacenum, offs_t address);
/* expression handlers */
static UINT64 expression_read_memory(const char *name, int space, UINT32 address, int size);
static UINT64 expression_read_address_space(int cpuindex, int space, offs_t address, int size);
static UINT64 expression_read_program_direct(int cpuindex, int opcode, offs_t address, int size);
static UINT64 expression_read_memory_region(const char *rgntag, offs_t address, int size);
static UINT64 expression_read_eeprom(offs_t address, int size);
static void expression_write_memory(const char *name, int space, UINT32 address, int size, UINT64 data);
static void expression_write_address_space(int cpuindex, int space, offs_t address, int size, UINT64 data);
static void expression_write_program_direct(int cpuindex, int opcode, offs_t address, int size, UINT64 data);
static void expression_write_memory_region(const char *rgntag, offs_t address, int size, UINT64 data);
static void expression_write_eeprom(offs_t address, int size, UINT64 data);
static EXPRERR expression_validate(const char *name, int space);
/* variable getters/setters */
static UINT64 get_wpaddr(void *ref);
static UINT64 get_wpdata(void *ref);
static UINT64 get_cycles(void *ref);
static UINT64 get_cpunum(void *ref);
static UINT64 get_tempvar(void *ref);
static UINT64 get_logunmap(void *ref);
static UINT64 get_beamx(void *ref);
static UINT64 get_beamy(void *ref);
static UINT64 get_frame(void *ref);
static void set_tempvar(void *ref, UINT64 value);
static void set_logunmap(void *ref, UINT64 value);
static UINT64 get_current_pc(void *ref);
static UINT64 get_cpu_reg(void *ref);
static void set_cpu_reg(void *ref, UINT64 value);
/***************************************************************************
GLOBAL CONSTANTS
***************************************************************************/
const express_callbacks debug_expression_callbacks =
{
expression_read_memory,
expression_write_memory,
expression_validate
};
/***************************************************************************
FRONTENDS FOR OLDER FUNCTIONS
***************************************************************************/
/*-------------------------------------------------
debug_cpu_within_instruction_hook - true if
the debugger is currently live
-------------------------------------------------*/
int debug_cpu_within_instruction_hook(running_machine *machine)
{
return global.within_instruction_hook;
}
/*-------------------------------------------------
on_vblank - called when a VBLANK hits
-------------------------------------------------*/
static void on_vblank(const device_config *device, void *param, int vblank_state)
{
/* just set a global flag to be consumed later */
if (vblank_state)
global.vblank_occurred = TRUE;
}
/***************************************************************************
INITIALIZATION
***************************************************************************/
/*-------------------------------------------------
debug_cpu_init - initialize the CPU
information for debugging
-------------------------------------------------*/
void debug_cpu_init(running_machine *machine)
{
int cpunum, spacenum, regnum;
/* reset globals */
global.execution_state = EXECUTION_STATE_STOPPED;
global.bpindex = 1;
global.wpindex = 1;
global.within_instruction_hook = FALSE;
global.visiblecpu = NULL;
/* create a global symbol table */
global_symtable = symtable_alloc(NULL);
/* add "wpaddr", "wpdata", "cycles", "cpunum", "logunmap" to the global symbol table */
symtable_add_register(global_symtable, "wpaddr", NULL, get_wpaddr, NULL);
symtable_add_register(global_symtable, "wpdata", NULL, get_wpdata, NULL);
symtable_add_register(global_symtable, "cycles", NULL, get_cycles, NULL);
symtable_add_register(global_symtable, "cpunum", NULL, get_cpunum, NULL);
symtable_add_register(global_symtable, "logunmap", (void *)ADDRESS_SPACE_PROGRAM, get_logunmap, set_logunmap);
symtable_add_register(global_symtable, "logunmapd", (void *)ADDRESS_SPACE_DATA, get_logunmap, set_logunmap);
symtable_add_register(global_symtable, "logunmapi", (void *)ADDRESS_SPACE_IO, get_logunmap, set_logunmap);
symtable_add_register(global_symtable, "beamx", NULL, get_beamx, NULL);
symtable_add_register(global_symtable, "beamy", NULL, get_beamy, NULL);
symtable_add_register(global_symtable, "frame", NULL, get_frame, NULL);
/* 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);
symtable_add_register(global_symtable, symname, &global.tempvar, get_tempvar, set_tempvar);
}
/* loop over CPUs and build up their info */
for (cpunum = 0; cpunum < MAX_CPU; cpunum++)
{
cpu_type cputype = machine->config->cpu[cpunum].type;
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* if this is a dummy, stop looking */
memset(info, 0, sizeof(*info));
if (cputype == CPU_DUMMY)
break;
/* reset the PC data */
info->valid = TRUE;
info->flags = DEBUG_FLAG_OBSERVING | DEBUG_FLAG_HISTORY;
info->endianness = cpu_get_endianness(machine->cpu[cpunum]);
info->opwidth = cpu_get_min_opcode_bytes(machine->cpu[cpunum]);
/* fetch the memory accessors */
info->translate = (cpu_translate_func)cpu_get_info_fct(machine->cpu[cpunum], CPUINFO_PTR_TRANSLATE);
info->read = (cpu_read_func)cpu_get_info_fct(machine->cpu[cpunum], CPUINFO_PTR_READ);
info->write = (cpu_write_func)cpu_get_info_fct(machine->cpu[cpunum], CPUINFO_PTR_WRITE);
info->readop = (cpu_readop_func)cpu_get_info_fct(machine->cpu[cpunum], CPUINFO_PTR_READOP);
/* allocate a symbol table */
info->symtable = symtable_alloc(global_symtable);
/* add a global symbol for the current instruction pointer */
symtable_add_register(info->symtable, "curpc", machine, get_current_pc, 0);
/* add all registers into it */
for (regnum = 0; regnum < MAX_REGS; regnum++)
{
const char *str = cpu_get_reg_string(machine->cpu[cpunum], regnum);
const char *colon;
char symname[256];
int charnum;
/* skip if we don't get a valid string, or one without a colon */
if (str == NULL)
continue;
if (str[0] == '~')
str++;
colon = strchr(str, ':');
if (colon == NULL)
continue;
/* strip all spaces from the name and convert to lowercase */
for (charnum = 0; charnum < sizeof(symname) - 1 && str < colon; str++)
if (!isspace(*str))
symname[charnum++] = tolower(*str);
symname[charnum] = 0;
/* add the symbol to the table */
symtable_add_register(info->symtable, symname, (void *)(FPTR)regnum, get_cpu_reg, set_cpu_reg);
}
/* loop over address spaces and get info */
for (spacenum = 0; spacenum < ADDRESS_SPACES; spacenum++)
{
debug_space_info *spaceinfo = &info->space[spacenum];
int datawidth = cpu_get_databus_width(machine->cpu[cpunum], spacenum);
int logwidth = cpu_get_logaddr_width(machine->cpu[cpunum], spacenum);
int physwidth = cpu_get_addrbus_width(machine->cpu[cpunum], spacenum);
int addrshift = cpu_get_addrbus_shift(machine->cpu[cpunum], spacenum);
int pageshift = cpu_get_page_shift(machine->cpu[cpunum], spacenum);
if (logwidth == 0)
logwidth = physwidth;
spaceinfo->databytes = datawidth / 8;
spaceinfo->pageshift = pageshift;
/* left/right shifts to convert addresses to bytes */
spaceinfo->addr2byte_lshift = (addrshift < 0) ? -addrshift : 0;
spaceinfo->addr2byte_rshift = (addrshift > 0) ? addrshift : 0;
/* number of character used to display addresses */
spaceinfo->physchars = (physwidth + 3) / 4;
spaceinfo->logchars = (logwidth + 3) / 4;
/* masks to apply to addresses */
spaceinfo->physaddrmask = (0xfffffffful >> (32 - physwidth));
spaceinfo->logaddrmask = (0xfffffffful >> (32 - logwidth));
/* masks to apply to byte addresses */
spaceinfo->physbytemask = ((spaceinfo->physaddrmask << spaceinfo->addr2byte_lshift) | ((1 << spaceinfo->addr2byte_lshift) - 1)) >> spaceinfo->addr2byte_rshift;
spaceinfo->logbytemask = ((spaceinfo->logaddrmask << spaceinfo->addr2byte_lshift) | ((1 << spaceinfo->addr2byte_lshift) - 1)) >> spaceinfo->addr2byte_rshift;
}
}
/* add callback for breaking on VBLANK */
if (machine->primary_screen != NULL)
video_screen_register_vblank_callback(machine->primary_screen, on_vblank, NULL);
add_exit_callback(machine, debug_cpu_exit);
}
/*-------------------------------------------------
debug_cpu_exit - free all memory
-------------------------------------------------*/
static void debug_cpu_exit(running_machine *machine)
{
int cpunum, spacenum;
/* loop over all watchpoints and breakpoints to free their memory */
for (cpunum = 0; cpunum < MAX_CPU; cpunum++)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* close any tracefiles */
if (info->trace.file)
fclose(info->trace.file);
if (info->trace.action)
free(info->trace.action);
/* free the symbol table */
if (info->symtable)
symtable_free(info->symtable);
/* free all breakpoints */
while (info->bplist)
debug_cpu_breakpoint_clear(machine, info->bplist->index);
/* loop over all address spaces */
for (spacenum = 0; spacenum < ADDRESS_SPACES; spacenum++)
{
/* free all watchpoints */
while (info->space[spacenum].wplist)
debug_cpu_watchpoint_clear(machine, info->space[spacenum].wplist->index);
}
}
/* free the global symbol table */
if (global_symtable)
symtable_free(global_symtable);
}
/***************************************************************************
MAIN CPU CALLBACK
***************************************************************************/
/*-------------------------------------------------
compute_debug_flags - compute the global
debug flags for optimal efficiency
-------------------------------------------------*/
static void compute_debug_flags(running_machine *machine, const debug_cpu_info *info)
{
/* clear out all global flags by default */
machine->debug_flags = DEBUG_FLAG_ENABLED;
/* if we are ignoring this CPU, or if events are pending, we're done */
if ((info->flags & DEBUG_FLAG_OBSERVING) == 0 || mame_is_scheduled_event_pending(machine) || mame_is_save_or_load_pending(machine))
return;
/* many of our states require us to be called on each instruction */
if (global.execution_state == EXECUTION_STATE_STOPPED)
machine->debug_flags |= DEBUG_FLAG_CALL_HOOK;
if ((info->flags & (DEBUG_FLAG_HISTORY | DEBUG_FLAG_TRACING_ANY | DEBUG_FLAG_HOOKED |
DEBUG_FLAG_STEPPING_ANY | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP)) != 0)
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 ((info->flags & DEBUG_FLAG_STOP_TIME) && attotime_compare(info->endexectime, info->stoptime) <= 0)
machine->debug_flags |= DEBUG_FLAG_CALL_HOOK;
/* add in the watchpoint flags */
machine->debug_flags |= (info->flags & DEBUG_FLAG_WATCHPOINT) >> (24 - 4);
/* if any of the watchpoint flags are set and we're live, tell the memory system */
if (global.livecpu != NULL && ((info->flags & DEBUG_FLAG_WATCHPOINT) != 0))
memory_set_context(machine, -1);
}
/*-------------------------------------------------
reset_transient_flags - reset the transient
flags on all CPUs
-------------------------------------------------*/
static void reset_transient_flags(running_machine *machine)
{
int cpunum;
/* loop over CPUs and reset the transient flags */
for (cpunum = 0; cpunum < ARRAY_LENGTH(global.cpuinfo); cpunum++)
global.cpuinfo[cpunum].flags &= ~DEBUG_FLAG_TRANSIENT;
}
/*-------------------------------------------------
debug_cpu_start_hook - the CPU execution
system calls this hook before beginning
execution for the given CPU
-------------------------------------------------*/
void debug_cpu_start_hook(running_machine *machine, int cpunum, attotime endtime)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
assert((machine->debug_flags & DEBUG_FLAG_ENABLED) != 0);
/* stash a pointer to the current live CPU */
assert(global.livecpu == NULL);
global.livecpu = info;
/* update the target execution end time */
info->endexectime = endtime;
/* if we're running, do some periodic updating */
if (global.execution_state != EXECUTION_STATE_STOPPED)
{
/* check for periodic updates */
if (info == global.visiblecpu && osd_ticks() > global.last_periodic_update_time + osd_ticks_per_second()/4)
{
debug_view_update_all();
global.last_periodic_update_time = osd_ticks();
}
/* check for pending breaks */
else if (info == 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 ((info->flags & DEBUG_FLAG_STOP_VBLANK) != 0)
{
global.execution_state = EXECUTION_STATE_STOPPED;
debug_console_printf("Stopped at VBLANK\n");
}
/* check for debug keypresses */
else if (ui_input_pressed(machine, IPT_UI_DEBUG_BREAK))
debug_cpu_halt_on_next_instruction(machine, -1, "User-initiated break\n");
}
}
/* recompute the debugging mode */
compute_debug_flags(machine, info);
}
/*-------------------------------------------------
debug_cpu_stop_hook - the CPU execution
system calls this hook when ending execution
for the given CPU
-------------------------------------------------*/
void debug_cpu_stop_hook(running_machine *machine, int cpunum)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
assert(global.livecpu == info);
/* if we're stopping on a context switch, handle it now */
if (info->flags & DEBUG_FLAG_STOP_CONTEXT)
{
global.execution_state = EXECUTION_STATE_STOPPED;
reset_transient_flags(machine);
}
/* clear the live CPU */
global.livecpu = NULL;
}
/*-------------------------------------------------
debug_cpu_interrupt_hook - called when an
interrupt is acknowledged
-------------------------------------------------*/
void debug_cpu_interrupt_hook(running_machine *machine, int cpunum, int irqline)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* see if this matches a pending interrupt request */
if ((info->flags & DEBUG_FLAG_STOP_INTERRUPT) != 0 && (info->stopirq == -1 || info->stopirq == irqline))
{
global.execution_state = EXECUTION_STATE_STOPPED;
debug_console_printf("Stopped on interrupt (CPU %d, IRQ %d)\n", cpunum, irqline);
compute_debug_flags(machine, info);
}
}
/*-------------------------------------------------
debug_cpu_exception_hook - called when an
exception is generated
-------------------------------------------------*/
void debug_cpu_exception_hook(running_machine *machine, int cpunum, int exception)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* see if this matches a pending interrupt request */
if ((info->flags & DEBUG_FLAG_STOP_EXCEPTION) != 0 && (info->stopexception == -1 || info->stopexception == exception))
{
global.execution_state = EXECUTION_STATE_STOPPED;
debug_console_printf("Stopped on exception (CPU %d, exception %d)\n", cpunum, exception);
compute_debug_flags(machine, info);
}
}
/*-------------------------------------------------
debug_cpu_instruction_hook - called by the
CPU cores before executing each instruction
-------------------------------------------------*/
void debug_cpu_instruction_hook(running_machine *machine, offs_t curpc)
{
debug_cpu_info *info = global.livecpu;
/* note that we are in the debugger code */
global.within_instruction_hook = TRUE;
/* update the history */
info->pc_history[info->pc_history_index++ % DEBUG_HISTORY_SIZE] = curpc;
/* are we tracing? */
if (info->flags & DEBUG_FLAG_TRACING_ANY)
perform_trace(machine, info);
/* per-instruction hook? */
if (global.execution_state != EXECUTION_STATE_STOPPED && (info->flags & DEBUG_FLAG_HOOKED) != 0 && (*info->instrhook)(curpc))
global.execution_state = EXECUTION_STATE_STOPPED;
/* handle single stepping */
if (global.execution_state != EXECUTION_STATE_STOPPED && (info->flags & DEBUG_FLAG_STEPPING_ANY) != 0)
{
/* is this an actual step? */
if (info->stepaddr == ~0 || curpc == info->stepaddr)
{
/* decrement the count and reset the breakpoint */
info->stepsleft--;
info->stepaddr = ~0;
/* if we hit 0, stop */
if (info->stepsleft == 0)
global.execution_state = EXECUTION_STATE_STOPPED;
/* update every 100 steps until we are within 200 of the end */
else if ((info->flags & DEBUG_FLAG_STEPPING_OUT) == 0 && (info->stepsleft < 200 || info->stepsleft % 100 == 0))
{
debug_view_update_all();
debugger_refresh_display(machine);
}
}
}
/* handle breakpoints */
if (global.execution_state != EXECUTION_STATE_STOPPED && (info->flags & (DEBUG_FLAG_STOP_TIME | DEBUG_FLAG_STOP_PC | DEBUG_FLAG_LIVE_BP)) != 0)
{
/* see if we hit a target time */
if ((info->flags & DEBUG_FLAG_STOP_TIME) != 0 && attotime_compare(timer_get_time(), info->stoptime) >= 0)
{
debug_console_printf("Stopped at time interval %.1g\n", attotime_to_double(timer_get_time()));
global.execution_state = EXECUTION_STATE_STOPPED;
}
/* check the temp running breakpoint and break if we hit it */
else if ((info->flags & DEBUG_FLAG_STOP_PC) != 0 && info->stopaddr == curpc)
{
debug_console_printf("Stopped at temporary breakpoint %X on CPU %d\n", info->stopaddr, (int)(info - global.cpuinfo));
global.execution_state = EXECUTION_STATE_STOPPED;
}
/* check for execution breakpoints */
else if ((info->flags & DEBUG_FLAG_LIVE_BP) != 0)
breakpoint_check(machine, info, curpc);
}
/* if we are supposed to halt, do it now */
if (global.execution_state == EXECUTION_STATE_STOPPED)
{
int firststop = TRUE;
/* reset any transient state */
reset_transient_flags(machine);
global.breakcpu = NULL;
/* update all views */
debug_view_update_all();
debugger_refresh_display(machine);
/* wait for the debugger; during this time, disable sound output */
sound_mute(TRUE);
while (global.execution_state == EXECUTION_STATE_STOPPED)
{
/* clear the memory modified flag and wait */
global.memory_modified = FALSE;
osd_wait_for_debugger(machine, firststop);
firststop = FALSE;
/* if something modified memory, update the screen */
if (global.memory_modified)
{
debug_disasm_update_all();
debugger_refresh_display(machine);
}
/* check for commands in the source file */
process_source_file(machine);
/* if an event got scheduled, resume */
if (mame_is_scheduled_event_pending(machine))
global.execution_state = EXECUTION_STATE_RUNNING;
}
sound_mute(FALSE);
/* remember the last visible CPU in the debugger */
global.visiblecpu = info;
}
/* handle step out/over on the instruction we are about to execute */
if ((info->flags & (DEBUG_FLAG_STEPPING_OVER | DEBUG_FLAG_STEPPING_OUT)) != 0 && info->stepaddr == ~0)
prepare_for_step_overout(machine, info);
/* no longer in debugger code */
global.within_instruction_hook = FALSE;
}
/*-------------------------------------------------
debug_cpu_memory_read_hook - the memory system
calls this hook when watchpoints are enabled
and a memory read happens
-------------------------------------------------*/
void debug_cpu_memory_read_hook(running_machine *machine, int cpunum, int spacenum, offs_t address, UINT64 mem_mask)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* check watchpoints */
if ((info->flags & (DEBUG_FLAG_LIVE_WPR_PROGRAM << spacenum)) != 0)
watchpoint_check(machine, cpunum, spacenum, WATCHPOINT_READ, address, 0, mem_mask);
/* check hotspots */
if (info->hotspots != NULL)
check_hotspots(machine, cpunum, spacenum, address);
}
/*-------------------------------------------------
debug_cpu_memory_write_hook - the memory
system calls this hook when watchpoints are
enabled and a memory write happens
-------------------------------------------------*/
void debug_cpu_memory_write_hook(running_machine *machine, int cpunum, int spacenum, offs_t address, UINT64 data, UINT64 mem_mask)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* check watchpoints */
if ((info->flags & (DEBUG_FLAG_LIVE_WPW_PROGRAM << spacenum)) != 0)
watchpoint_check(machine, cpunum, spacenum, WATCHPOINT_WRITE, address, data, mem_mask);
}
/***************************************************************************
EXECUTION CONTROL
***************************************************************************/
/*-------------------------------------------------
debug_cpu_single_step - single step past the
requested number of instructions
-------------------------------------------------*/
void debug_cpu_single_step(int numsteps)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->stepsleft = numsteps;
info->stepaddr = ~0;
info->flags |= DEBUG_FLAG_STEPPING;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_single_step_over - single step over
a single instruction
-------------------------------------------------*/
void debug_cpu_single_step_over(int numsteps)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->stepsleft = numsteps;
info->stepaddr = ~0;
info->flags |= DEBUG_FLAG_STEPPING_OVER;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_single_step_out - single step out of
the current function
-------------------------------------------------*/
void debug_cpu_single_step_out(void)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->stepsleft = 100;
info->stepaddr = ~0;
info->flags |= DEBUG_FLAG_STEPPING_OUT;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_go - resume execution
-------------------------------------------------*/
void debug_cpu_go(offs_t targetpc)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->stopaddr = targetpc;
info->flags |= DEBUG_FLAG_STOP_PC;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_go_vblank - run until the next
VBLANK
-------------------------------------------------*/
void debug_cpu_go_vblank(void)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
global.vblank_occurred = FALSE;
info->flags |= DEBUG_FLAG_STOP_VBLANK;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_go_interrupt - run until the
specified interrupt fires
-------------------------------------------------*/
void debug_cpu_go_interrupt(int irqline)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->stopirq = irqline;
info->flags |= DEBUG_FLAG_STOP_INTERRUPT;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_go_exception - run until the
specified exception fires
-------------------------------------------------*/
#ifdef UNUSED_FUNCTION
void debug_cpu_go_exception(int exception)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->stopexception = exception;
info->flags |= DEBUG_FLAG_STOP_EXCEPTION;
global.execution_state = EXECUTION_STATE_RUNNING;
}
#endif
/*-------------------------------------------------
debug_cpu_go_milliseconds - run until the
specified delay elapses
-------------------------------------------------*/
void debug_cpu_go_milliseconds(UINT64 milliseconds)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->stoptime = attotime_add(timer_get_time(), ATTOTIME_IN_MSEC(milliseconds));
info->flags |= DEBUG_FLAG_STOP_TIME;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_next_cpu - execute until we hit
the next CPU
-------------------------------------------------*/
void debug_cpu_next_cpu(void)
{
debug_cpu_info *info = global.livecpu;
if (!global.within_instruction_hook)
return;
assert(info != NULL);
info->flags |= DEBUG_FLAG_STOP_CONTEXT;
global.execution_state = EXECUTION_STATE_RUNNING;
}
/*-------------------------------------------------
debug_cpu_ignore_cpu - ignore/observe a given
CPU
-------------------------------------------------*/
void debug_cpu_ignore_cpu(int cpunum, int ignore)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
if (!global.within_instruction_hook)
return;
if (ignore)
info->flags &= ~DEBUG_FLAG_OBSERVING;
else
info->flags |= DEBUG_FLAG_OBSERVING;
if (info == global.livecpu && ignore)
debug_cpu_next_cpu();
}
/*-------------------------------------------------
debug_cpu_trace - trace execution of a given
CPU
-------------------------------------------------*/
void debug_cpu_trace(int cpunum, FILE *file, int trace_over, const char *action)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* close existing files and delete expressions */
if (info->trace.file != NULL)
fclose(info->trace.file);
info->trace.file = NULL;
if (info->trace.action != NULL)
free(info->trace.action);
info->trace.action = NULL;
/* open any new files */
info->trace.file = file;
info->trace.action = NULL;
info->trace.trace_over_target = ~0;
if (action != NULL)
{
info->trace.action = malloc_or_die(strlen(action) + 1);
strcpy(info->trace.action, action);
}
/* update flags */
if (info->trace.file != NULL)
info->flags |= trace_over ? DEBUG_FLAG_TRACING_OVER : DEBUG_FLAG_TRACING;
else
info->flags &= ~DEBUG_FLAG_TRACING_ANY;
}
/***************************************************************************
UTILITIES
***************************************************************************/
/*-------------------------------------------------
debug_get_cpu_info - returns the cpu info
block for a given CPU
-------------------------------------------------*/
const debug_cpu_info *debug_get_cpu_info(int cpunum)
{
return &global.cpuinfo[cpunum];
}
/*-------------------------------------------------
debug_cpu_halt_on_next_instruction - halt in
the debugger on the next instruction
-------------------------------------------------*/
void debug_cpu_halt_on_next_instruction(running_machine *machine, int cpunum, const char *fmt, ...)
{
debug_cpu_info *info;
va_list arg;
/* pick the best CPU to land on */
if (cpunum != -1)
info = &global.cpuinfo[cpunum];
else if (global.visiblecpu != NULL)
info = global.visiblecpu;
else
info = global.livecpu;
/* if something is pending on this CPU already, ignore this request */
if (info != NULL && info == global.breakcpu)
return;
va_start(arg, fmt);
debug_console_vprintf(fmt, arg);
va_end(arg);
if (info == global.livecpu)
{
global.execution_state = EXECUTION_STATE_STOPPED;
if (global.livecpu != NULL)
compute_debug_flags(machine, global.livecpu);
}
else
global.breakcpu = info;
}
/*-------------------------------------------------
debug_cpu_is_stopped - return the
current execution state
-------------------------------------------------*/
int debug_cpu_is_stopped(running_machine *machine)
{
return global.execution_state == EXECUTION_STATE_STOPPED;
}
/*-------------------------------------------------
perform_trace - log to the tracefile the
data for a given instruction
-------------------------------------------------*/
static UINT32 dasm_wrapped(running_machine *machine, char *buffer, offs_t pc)
{
const debug_cpu_info *cpuinfo = debug_get_cpu_info(cpunum_get_active());
int maxbytes = cpu_get_max_opcode_bytes(machine->activecpu);
UINT8 opbuf[64], argbuf[64];
offs_t pcbyte;
int numbytes;
/* fetch the bytes up to the maximum */
pcbyte = ADDR2BYTE_MASKED(pc, cpuinfo, ADDRESS_SPACE_PROGRAM);
for (numbytes = 0; numbytes < maxbytes; numbytes++)
{
opbuf[numbytes] = debug_read_opcode(pcbyte + numbytes, 1, FALSE);
argbuf[numbytes] = debug_read_opcode(pcbyte + numbytes, 1, TRUE);
}
return cpu_dasm(machine->activecpu, buffer, pc, opbuf, argbuf);
}
static void perform_trace(running_machine *machine, debug_cpu_info *info)
{
offs_t pc = cpu_get_pc(machine->activecpu);
int offset, count, i;
char buffer[100];
offs_t dasmresult;
/* are we in trace over mode and in a subroutine? */
if ((info->flags & DEBUG_FLAG_TRACING_OVER) != 0 && info->trace.trace_over_target != ~0)
{
if (info->trace.trace_over_target != pc)
return;
info->trace.trace_over_target = ~0;
}
/* check for a loop condition */
for (i = count = 0; i < TRACE_LOOPS; i++)
if (info->trace.history[i] == pc)
count++;
/* if no more than 1 hit, process normally */
if (count <= 1)
{
/* if we just finished looping, indicate as much */
if (info->trace.loops != 0)
fprintf(info->trace.file, "\n (loops for %d instructions)\n\n", info->trace.loops);
info->trace.loops = 0;
/* execute any trace actions first */
if (info->trace.action != NULL)
debug_console_execute_command(machine, info->trace.action, 0);
/* print the address */
offset = sprintf(buffer, "%0*X: ", info->space[ADDRESS_SPACE_PROGRAM].logchars, pc);
/* print the disassembly */
dasmresult = dasm_wrapped(machine, &buffer[offset], pc);
/* output the result */
fprintf(info->trace.file, "%s\n", buffer);
/* do we need to step the trace over this instruction? */
if ((info->flags & DEBUG_FLAG_TRACING_OVER) != 0 && (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 += dasm_wrapped(machine, buffer, trace_over_target) & DASMFLAG_LENGTHMASK;
info->trace.trace_over_target = trace_over_target;
}
/* log this PC */
info->trace.nextdex = (info->trace.nextdex + 1) % TRACE_LOOPS;
info->trace.history[info->trace.nextdex] = pc;
}
/* else just count the loop */
else
info->trace.loops++;
}
/*-------------------------------------------------
prepare_for_step_overout - prepare things for
stepping over an instruction
-------------------------------------------------*/
static void prepare_for_step_overout(running_machine *machine, debug_cpu_info *info)
{
offs_t pc = cpu_get_pc(machine->activecpu);
char dasmbuffer[100];
offs_t dasmresult;
/* disassemble the current instruction and get the flags */
dasmresult = dasm_wrapped(machine, 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(machine, dasmbuffer, pc) & DASMFLAG_LENGTHMASK;
info->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 ((info->flags & DEBUG_FLAG_STEPPING_OUT) != 0)
{
if ((dasmresult & DASMFLAG_SUPPORTED) != 0 && (dasmresult & DASMFLAG_STEP_OUT) == 0)
info->stepsleft = 100;
else
info->stepsleft = 1;
}
}
/*-------------------------------------------------
process_source_file - executes commands from
a source file
-------------------------------------------------*/
static void process_source_file(running_machine *machine)
{
/* loop until the file is exhausted or until we are executing again */
while (debug_source_file != NULL && global.execution_state == EXECUTION_STATE_STOPPED)
{
char buf[512];
int i;
char *s;
/* stop at the end of file */
if (feof(debug_source_file))
{
fclose(debug_source_file);
debug_source_file = NULL;
return;
}
/* fetch the next line */
memset(buf, 0, sizeof(buf));
fgets(buf, sizeof(buf), debug_source_file);
/* strip out comments (text after '//') */
s = strstr(buf, "//");
if (s)
*s = '\0';
/* strip whitespace */
i = (int)strlen(buf);
while((i > 0) && (isspace(buf[i-1])))
buf[--i] = '\0';
/* execute the command */
if (buf[0])
debug_console_execute_command(machine, buf, 1);
}
}
/*-------------------------------------------------
debug_cpu_set_instruction_hook - set a hook to
be called on each instruction for a given CPU
-------------------------------------------------*/
void debug_cpu_set_instruction_hook(int cpunum, int (*hook)(offs_t pc))
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* set the hook and also the CPU's flag for fast knowledge of the hook */
info->instrhook = hook;
if (hook != NULL)
info->flags |= DEBUG_FLAG_HOOKED;
else
info->flags &= ~DEBUG_FLAG_HOOKED;
}
/***************************************************************************
BREAKPOINTS
***************************************************************************/
/*-------------------------------------------------
breakpoint_update_flags - update the CPU's
breakpoint flags
-------------------------------------------------*/
static void breakpoint_update_flags(running_machine *machine, debug_cpu_info *info)
{
debug_cpu_breakpoint *bp;
/* see if there are any enabled breakpoints */
info->flags &= ~DEBUG_FLAG_LIVE_BP;
for (bp = info->bplist; bp != NULL; bp = bp->next)
if (bp->enabled)
{
info->flags |= DEBUG_FLAG_LIVE_BP;
break;
}
/* push the flags out globally */
if (global.livecpu != NULL)
compute_debug_flags(machine, global.livecpu);
}
/*-------------------------------------------------
breakpoint_check - check the breakpoints for
a given CPU
-------------------------------------------------*/
static void breakpoint_check(running_machine *machine, debug_cpu_info *info, offs_t pc)
{
debug_cpu_breakpoint *bp;
UINT64 result;
/* see if we match */
for (bp = info->bplist; bp != NULL; bp = bp->next)
if (bp->enabled && bp->address == pc)
/* if we do, evaluate the condition */
if (bp->condition == NULL || (expression_execute(bp->condition, &result) == EXPRERR_NONE && result != 0))
{
/* halt in the debugger by default */
global.execution_state = EXECUTION_STATE_STOPPED;
/* if we hit, evaluate the action */
if (bp->action != NULL)
debug_console_execute_command(machine, bp->action, 0);
/* print a notification, unless the action made us go again */
if (global.execution_state == EXECUTION_STATE_STOPPED)
debug_console_printf("Stopped at breakpoint %X\n", bp->index);
break;
}
}
/*-------------------------------------------------
debug_cpu_breakpoint_set - set a new breakpoint
-------------------------------------------------*/
int debug_cpu_breakpoint_set(running_machine *machine, int cpunum, offs_t address, parsed_expression *condition, const char *action)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
debug_cpu_breakpoint *bp;
assert_always(cpunum >= 0 && cpunum < cpu_gettotalcpu(), "debug_cpu_breakpoint_set() called with invalid cpunum!");
/* allocate breakpoint */
bp = malloc_or_die(sizeof(*bp));
bp->index = global.bpindex++;
bp->enabled = TRUE;
bp->address = address;
bp->condition = condition;
bp->action = NULL;
if (action != NULL)
{
bp->action = malloc_or_die(strlen(action) + 1);
strcpy(bp->action, action);
}
/* hook us in */
bp->next = info->bplist;
info->bplist = bp;
/* ensure the live breakpoint flag is set */
breakpoint_update_flags(machine, info);
return bp->index;
}
/*-------------------------------------------------
debug_cpu_breakpoint_clear - clear a breakpoint
-------------------------------------------------*/
int debug_cpu_breakpoint_clear(running_machine *machine, int bpnum)
{
debug_cpu_breakpoint *bp, *pbp;
int cpunum;
/* loop over CPUs and find the requested breakpoint */
for (cpunum = 0; cpunum < MAX_CPU; cpunum++)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
for (pbp = NULL, bp = info->bplist; bp != NULL; pbp = bp, bp = bp->next)
if (bp->index == bpnum)
{
/* unlink us from the list */
if (pbp == NULL)
info->bplist = bp->next;
else
pbp->next = bp->next;
/* free the memory */
if (bp->condition != NULL)
expression_free(bp->condition);
if (bp->action != NULL)
free(bp->action);
free(bp);
/* update the flags */
breakpoint_update_flags(machine, info);
return 1;
}
}
/* we didn't find it; return an error */
return 0;
}
/*-------------------------------------------------
debug_cpu_breakpoint_enable - enable/disable a
breakpoint
-------------------------------------------------*/
int debug_cpu_breakpoint_enable(running_machine *machine, int bpnum, int enable)
{
debug_cpu_breakpoint *bp;
int cpunum;
/* loop over CPUs and find the requested breakpoint */
for (cpunum = 0; cpunum < MAX_CPU; cpunum++)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
for (bp = info->bplist; bp != NULL; bp = bp->next)
if (bp->index == bpnum)
{
bp->enabled = (enable != 0);
breakpoint_update_flags(machine, info);
return 1;
}
}
return 0;
}
/***************************************************************************
WATCHPOINTS
***************************************************************************/
/*-------------------------------------------------
watchpoint_update_flags - update the CPU's
watchpoint flags
-------------------------------------------------*/
static void watchpoint_update_flags(running_machine *machine, debug_cpu_info *info, int spacenum)
{
UINT32 writeflag = DEBUG_FLAG_LIVE_WPW_PROGRAM << spacenum;
UINT32 readflag = DEBUG_FLAG_LIVE_WPR_PROGRAM << spacenum;
debug_cpu_watchpoint *wp;
/* if hotspots are enabled, turn on all reads */
if (info->hotspots != NULL)
{
info->flags |= DEBUG_FLAG_READ_WATCHPOINT;
readflag = 0;
}
/* see if there are any enabled breakpoints */
info->flags &= ~(readflag | writeflag);
for (wp = info->space[spacenum].wplist; wp != NULL; wp = wp->next)
if (wp->enabled)
{
if (wp->type & WATCHPOINT_READ)
{
info->flags |= readflag;
readflag = 0;
}
if (wp->type & WATCHPOINT_WRITE)
{
info->flags |= writeflag;
writeflag = 0;
}
if ((readflag | writeflag) == 0)
break;
}
/* push the flags out globally */
if (global.livecpu != NULL)
compute_debug_flags(machine, global.livecpu);
}
/*-------------------------------------------------
watchpoint_check - check the watchpoints
for a given CPU and address space
-------------------------------------------------*/
static void watchpoint_check(running_machine *machine, int cpunum, int spacenum, int type, offs_t address, UINT64 value_to_write, UINT64 mem_mask)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum];
debug_cpu_watchpoint *wp;
offs_t size = 0;
UINT64 result;
/* 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. */
if (mem_mask != 0)
{
int bus_size = info->space[spacenum].databytes;
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 (info->endianness == CPU_IS_LE)
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 (wp = info->space[spacenum].wplist; wp != NULL; wp = wp->next)
if (wp->enabled && (wp->type & type) != 0 && address + size > wp->address && address < wp->address + wp->length)
/* if we do, evaluate the condition */
if (wp->condition == NULL || (expression_execute(wp->condition, &result) == EXPRERR_NONE && result != 0))
{
/* halt in the debugger by default */
global.execution_state = EXECUTION_STATE_STOPPED;
/* if we hit, evaluate the action */
if (wp->action != NULL)
debug_console_execute_command(machine, wp->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"
};
char buffer[100];
if (type & WATCHPOINT_WRITE)
{
sprintf(buffer, "Stopped at watchpoint %X writing %s to %08X (PC=%X)", wp->index, sizes[size], BYTE2ADDR(address, &global.cpuinfo[cpunum], spacenum), cpu_get_pc(machine->activecpu));
if (value_to_write >> 32)
sprintf(&buffer[strlen(buffer)], " (data=%X%08X)", (UINT32)(value_to_write >> 32), (UINT32)value_to_write);
else
sprintf(&buffer[strlen(buffer)], " (data=%X)", (UINT32)value_to_write);
}
else
sprintf(buffer, "Stopped at watchpoint %X reading %s from %08X (PC=%X)", wp->index, sizes[size], BYTE2ADDR(address, &global.cpuinfo[cpunum], spacenum), cpu_get_pc(machine->activecpu));
debug_console_printf("%s\n", buffer);
compute_debug_flags(machine, info);
}
break;
}
global.within_instruction_hook = FALSE;
}
/*-------------------------------------------------
debug_cpu_watchpoint_set - set a new watchpoint
-------------------------------------------------*/
int debug_cpu_watchpoint_set(running_machine *machine, int cpunum, int spacenum, int type, offs_t address, offs_t length, parsed_expression *condition, const char *action)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
debug_cpu_watchpoint *wp = malloc_or_die(sizeof(*wp));
/* fill in the structure */
wp->index = global.wpindex++;
wp->enabled = TRUE;
wp->type = type;
wp->address = ADDR2BYTE_MASKED(address, &global.cpuinfo[cpunum], spacenum);
wp->length = ADDR2BYTE(length, &global.cpuinfo[cpunum], spacenum);
wp->condition = condition;
wp->action = NULL;
if (action != NULL)
{
wp->action = malloc_or_die(strlen(action) + 1);
strcpy(wp->action, action);
}
/* hook us in */
wp->next = info->space[spacenum].wplist;
info->space[spacenum].wplist = wp;
watchpoint_update_flags(machine, info, spacenum);
return wp->index;
}
/*-------------------------------------------------
debug_cpu_watchpoint_clear - clear a watchpoint
-------------------------------------------------*/
int debug_cpu_watchpoint_clear(running_machine *machine, int wpnum)
{
debug_cpu_watchpoint *wp, *pwp;
int cpunum, spacenum;
/* loop over CPUs and find the requested watchpoint */
for (cpunum = 0; cpunum < MAX_CPU; cpunum++)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
for (spacenum = 0; spacenum < ADDRESS_SPACES; spacenum++)
for (pwp = NULL, wp = info->space[spacenum].wplist; wp != NULL; pwp = wp, wp = wp->next)
if (wp->index == wpnum)
{
/* unlink us from the list */
if (pwp == NULL)
info->space[spacenum].wplist = wp->next;
else
pwp->next = wp->next;
/* free the memory */
if (wp->condition != NULL)
expression_free(wp->condition);
if (wp->action != NULL)
free(wp->action);
free(wp);
watchpoint_update_flags(machine, info, spacenum);
return 1;
}
}
/* we didn't find it; return an error */
return 0;
}
/*-------------------------------------------------
debug_cpu_watchpoint_enable - enable/disable a
watchpoint
-------------------------------------------------*/
int debug_cpu_watchpoint_enable(running_machine *machine, int wpnum, int enable)
{
debug_cpu_watchpoint *wp;
int cpunum, spacenum;
/* loop over CPUs and address spaces and find the requested watchpoint */
for (cpunum = 0; cpunum < MAX_CPU; cpunum++)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
for (spacenum = 0; spacenum < ADDRESS_SPACES; spacenum++)
for (wp = info->space[spacenum].wplist; wp; wp = wp->next)
if (wp->index == wpnum)
{
wp->enabled = (enable != 0);
watchpoint_update_flags(machine, info, spacenum);
return 1;
}
}
return 0;
}
/***************************************************************************
HOTSPOTS
***************************************************************************/
/*-------------------------------------------------
debug_cpu_hotspot_track - enable/disable tracking
of hotspots
-------------------------------------------------*/
int debug_cpu_hotspot_track(running_machine *machine, int cpunum, int numspots, int threshhold)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
/* if we already have tracking info, kill it */
if (info->hotspots)
free(info->hotspots);
info->hotspots = NULL;
/* only start tracking if we have a non-zero count */
if (numspots > 0)
{
/* allocate memory for hotspots */
info->hotspots = malloc_or_die(sizeof(*info->hotspots) * numspots);
memset(info->hotspots, 0xff, sizeof(*info->hotspots) * numspots);
/* fill in the info */
info->hotspot_count = numspots;
info->hotspot_threshhold = threshhold;
}
watchpoint_update_flags(machine, info, ADDRESS_SPACE_PROGRAM);
return 1;
}
/*-------------------------------------------------
check_hotspots - check for
hotspots on a memory read access
-------------------------------------------------*/
static void check_hotspots(running_machine *machine, int cpunum, int spacenum, offs_t address)
{
debug_cpu_info *info = &global.cpuinfo[cpunum];
offs_t pc = cpu_get_pc(machine->activecpu);
int hotindex;
/* see if we have a match in our list */
for (hotindex = 0; hotindex < info->hotspot_count; hotindex++)
if (info->hotspots[hotindex].access == address && info->hotspots[hotindex].pc == pc && info->hotspots[hotindex].spacenum == spacenum)
break;
/* if we didn't find any, make a new entry */
if (hotindex == info->hotspot_count)
{
/* if the bottom of the list is over the threshhold, print it */
debug_hotspot_entry *spot = &info->hotspots[info->hotspot_count - 1];
if (spot->count > info->hotspot_threshhold)
debug_console_printf("Hotspot @ %s %08X (PC=%08X) hit %d times (fell off bottom)\n", address_space_names[spot->spacenum], spot->access, spot->pc, spot->count);
/* move everything else down and insert this one at the top */
memmove(&info->hotspots[1], &info->hotspots[0], sizeof(info->hotspots[0]) * (info->hotspot_count - 1));
info->hotspots[0].access = address;
info->hotspots[0].pc = pc;
info->hotspots[0].spacenum = spacenum;
info->hotspots[0].count = 1;
}
/* if we did find one, increase the count and move it to the top */
else
{
info->hotspots[hotindex].count++;
if (hotindex != 0)
{
debug_hotspot_entry temp = info->hotspots[hotindex];
memmove(&info->hotspots[1], &info->hotspots[0], sizeof(info->hotspots[0]) * hotindex);
info->hotspots[0] = temp;
}
}
}
/***************************************************************************
MEMORY ACCESSORS
***************************************************************************/
/*-------------------------------------------------
debug_read_byte - return a byte from the
current cpu in the specified memory space
-------------------------------------------------*/
UINT8 debug_read_byte(int spacenum, offs_t address, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
UINT64 custom;
UINT8 result;
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, return 0xff */
if (apply_translation && info->translate != NULL && !(*info->translate)(spacenum, TRANSLATE_READ_DEBUG, &address))
result = 0xff;
/* if there is a custom read handler, and it returns TRUE, use that value */
else if (info->read && (*info->read)(spacenum, address, 1, &custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = (*active_address_space[spacenum].accessors->read_byte)(address);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
return result;
}
/*-------------------------------------------------
debug_read_word - return a word from the
current cpu in the specified memory space
-------------------------------------------------*/
UINT16 debug_read_word(int spacenum, offs_t address, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
UINT64 custom;
UINT16 result;
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* if this is misaligned read, or if there are no word readers, just read two bytes */
if ((address & 1) || !active_address_space[spacenum].accessors->read_word)
{
UINT8 byte0 = debug_read_byte(spacenum, address + 0, apply_translation);
UINT8 byte1 = debug_read_byte(spacenum, address + 1, apply_translation);
/* based on the endianness, the result is assembled differently */
if (global.cpuinfo[cpunum_get_active()].endianness == CPU_IS_LE)
result = byte0 | (byte1 << 8);
else
result = byte1 | (byte0 << 8);
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, return 0xffff */
if (apply_translation && info->translate != NULL && !(*info->translate)(spacenum, TRANSLATE_READ_DEBUG, &address))
result = 0xffff;
/* if there is a custom read handler, and it returns TRUE, use that value */
else if (info->read && (*info->read)(spacenum, address, 2, &custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = (*active_address_space[spacenum].accessors->read_word)(address);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
}
return result;
}
/*-------------------------------------------------
debug_read_dword - return a dword from the
current cpu in the specified memory space
-------------------------------------------------*/
UINT32 debug_read_dword(int spacenum, offs_t address, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
UINT64 custom;
UINT32 result;
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* if this is misaligned read, or if there are no dword readers, just read two words */
if ((address & 3) || !active_address_space[spacenum].accessors->read_dword)
{
UINT16 word0 = debug_read_word(spacenum, address + 0, apply_translation);
UINT16 word1 = debug_read_word(spacenum, address + 2, apply_translation);
/* based on the endianness, the result is assembled differently */
if (global.cpuinfo[cpunum_get_active()].endianness == CPU_IS_LE)
result = word0 | (word1 << 16);
else
result = word1 | (word0 << 16);
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, return 0xffffffff */
if (apply_translation && info->translate != NULL && !(*info->translate)(spacenum, TRANSLATE_READ_DEBUG, &address))
result = 0xffffffff;
/* if there is a custom read handler, and it returns TRUE, use that value */
else if (info->read && (*info->read)(spacenum, address, 4, &custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = (*active_address_space[spacenum].accessors->read_dword)(address);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
}
return result;
}
/*-------------------------------------------------
debug_read_qword - return a qword from the
current cpu in the specified memory space
-------------------------------------------------*/
UINT64 debug_read_qword(int spacenum, offs_t address, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
UINT64 custom;
UINT64 result;
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* if this is misaligned read, or if there are no qword readers, just read two dwords */
if ((address & 7) || !active_address_space[spacenum].accessors->read_qword)
{
UINT32 dword0 = debug_read_dword(spacenum, address + 0, apply_translation);
UINT32 dword1 = debug_read_dword(spacenum, address + 4, apply_translation);
/* based on the endianness, the result is assembled differently */
if (global.cpuinfo[cpunum_get_active()].endianness == CPU_IS_LE)
result = dword0 | ((UINT64)dword1 << 32);
else
result = dword1 | ((UINT64)dword0 << 32);
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, return 0xffffffffffffffff */
if (apply_translation && info->translate != NULL && !(*info->translate)(spacenum, TRANSLATE_READ_DEBUG, &address))
result = ~(UINT64)0;
/* if there is a custom read handler, and it returns TRUE, use that value */
else if (info->read && (*info->read)(spacenum, address, 8, &custom))
result = custom;
/* otherwise, call the byte reading function for the translated address */
else
result = (*active_address_space[spacenum].accessors->read_qword)(address);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
}
return result;
}
/*-------------------------------------------------
debug_write_byte - write a byte to the
current cpu in the specified memory space
-------------------------------------------------*/
void debug_write_byte(int spacenum, offs_t address, UINT8 data, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && info->translate != NULL && !(*info->translate)(spacenum, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns TRUE, use that */
else if (info->write && (*info->write)(spacenum, address, 1, data))
;
/* otherwise, call the byte reading function for the translated address */
else
(*active_address_space[spacenum].accessors->write_byte)(address, data);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
global.memory_modified = TRUE;
}
/*-------------------------------------------------
debug_write_word - write a word to the
current cpu in the specified memory space
-------------------------------------------------*/
void debug_write_word(int spacenum, offs_t address, UINT16 data, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* if this is a misaligned write, or if there are no word writers, just read two bytes */
if ((address & 1) || !active_address_space[spacenum].accessors->write_word)
{
if (global.cpuinfo[cpunum_get_active()].endianness == CPU_IS_LE)
{
debug_write_byte(spacenum, address + 0, data >> 0, apply_translation);
debug_write_byte(spacenum, address + 1, data >> 8, apply_translation);
}
else
{
debug_write_byte(spacenum, address + 0, data >> 8, apply_translation);
debug_write_byte(spacenum, address + 1, data >> 0, apply_translation);
}
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && info->translate && !(*info->translate)(spacenum, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns TRUE, use that */
else if (info->write && (*info->write)(spacenum, address, 2, data))
;
/* otherwise, call the byte reading function for the translated address */
else
(*active_address_space[spacenum].accessors->write_word)(address, data);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
global.memory_modified = TRUE;
}
}
/*-------------------------------------------------
debug_write_dword - write a dword to the
current cpu in the specified memory space
-------------------------------------------------*/
void debug_write_dword(int spacenum, offs_t address, UINT32 data, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* if this is a misaligned write, or if there are no dword writers, just read two words */
if ((address & 3) || !active_address_space[spacenum].accessors->write_dword)
{
if (global.cpuinfo[cpunum_get_active()].endianness == CPU_IS_LE)
{
debug_write_word(spacenum, address + 0, data >> 0, apply_translation);
debug_write_word(spacenum, address + 2, data >> 16, apply_translation);
}
else
{
debug_write_word(spacenum, address + 0, data >> 16, apply_translation);
debug_write_word(spacenum, address + 2, data >> 0, apply_translation);
}
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && info->translate && !(*info->translate)(spacenum, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns TRUE, use that */
else if (info->write && (*info->write)(spacenum, address, 4, data))
;
/* otherwise, call the byte reading function for the translated address */
else
(*active_address_space[spacenum].accessors->write_dword)(address, data);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
global.memory_modified = TRUE;
}
}
/*-------------------------------------------------
debug_write_qword - write a qword to the
current cpu in the specified memory space
-------------------------------------------------*/
void debug_write_qword(int spacenum, offs_t address, UINT64 data, int apply_translation)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
/* mask against the logical byte mask */
address &= info->space[spacenum].logbytemask;
/* if this is a misaligned write, or if there are no qword writers, just read two dwords */
if ((address & 7) || !active_address_space[spacenum].accessors->write_qword)
{
if (global.cpuinfo[cpunum_get_active()].endianness == CPU_IS_LE)
{
debug_write_dword(spacenum, address + 0, data >> 0, apply_translation);
debug_write_dword(spacenum, address + 4, data >> 32, apply_translation);
}
else
{
debug_write_dword(spacenum, address + 0, data >> 32, apply_translation);
debug_write_dword(spacenum, address + 4, data >> 0, apply_translation);
}
}
/* otherwise, this proceeds like the byte case */
else
{
/* all accesses from this point on are for the debugger */
memory_set_debugger_access(global.debugger_access = TRUE);
/* translate if necessary; if not mapped, we're done */
if (apply_translation && info->translate && !(*info->translate)(spacenum, TRANSLATE_WRITE_DEBUG, &address))
;
/* if there is a custom write handler, and it returns TRUE, use that */
else if (info->write && (*info->write)(spacenum, address, 8, data))
;
/* otherwise, call the byte reading function for the translated address */
else
(*active_address_space[spacenum].accessors->write_qword)(address, data);
/* no longer accessing via the debugger */
memory_set_debugger_access(global.debugger_access = FALSE);
global.memory_modified = TRUE;
}
}
/*-------------------------------------------------
debug_read_opcode - read 1,2,4 or 8 bytes at
the given offset from opcode space
-------------------------------------------------*/
UINT64 debug_read_opcode(offs_t address, int size, int arg)
{
const debug_cpu_info *info = &global.cpuinfo[cpunum_get_active()];
offs_t lowbits_mask;
const void *ptr;
/* keep in logical range */
address &= info->space[ADDRESS_SPACE_PROGRAM].logbytemask;
/* shortcut if we have a custom routine */
if (info->readop)
{
UINT64 result;
if ((*info->readop)(address, size, &result))
return result;
}
/* if we're bigger than the address bus, break into smaller pieces */
if (size > info->space[ADDRESS_SPACE_PROGRAM].databytes)
{
int halfsize = size / 2;
UINT64 r0 = debug_read_opcode(address + 0, halfsize, arg);
UINT64 r1 = debug_read_opcode(address + halfsize, halfsize, arg);
if (info->endianness == CPU_IS_LE)
return r0 | (r1 << (8 * halfsize));
else
return r1 | (r0 << (8 * halfsize));
}
/* translate to physical first */
if (info->translate && !(*info->translate)(ADDRESS_SPACE_PROGRAM, TRANSLATE_FETCH_DEBUG, &address))
return ~(UINT64)0 & (~(UINT64)0 >> (64 - 8*size));
/* keep in physical range */
address &= info->space[ADDRESS_SPACE_PROGRAM].physbytemask;
/* adjust the address */
memory_set_opbase(address);
switch (info->space[ADDRESS_SPACE_PROGRAM].databytes * 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 ^= (info->endianness == CPU_IS_LE) ? 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 ^= (info->endianness == CPU_IS_LE) ? BYTE4_XOR_LE(0) : BYTE4_XOR_BE(0);
break;
/* dump opcodes in words from a dword-sized bus */
case 42:
address ^= (info->endianness == CPU_IS_LE) ? 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 ^= (info->endianness == CPU_IS_LE) ? BYTE8_XOR_LE(0) : BYTE8_XOR_BE(0);
break;
/* dump opcodes in words from a qword-sized bus */
case 82:
address ^= (info->endianness == CPU_IS_LE) ? WORD2_XOR_LE(0) : WORD2_XOR_BE(0);
break;
/* dump opcodes in dwords from a qword-sized bus */
case 84:
address ^= (info->endianness == CPU_IS_LE) ? 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", info->space[ADDRESS_SPACE_PROGRAM].databytes * 10 + size);
break;
}
/* get pointer to data */
/* note that we query aligned to the bus width, and then add back the low bits */
lowbits_mask = info->space[ADDRESS_SPACE_PROGRAM].databytes - 1;
ptr = memory_get_op_ptr(Machine, cpunum_get_active(), address & ~lowbits_mask, arg);
if (!ptr)
return ~(UINT64)0 & (~(UINT64)0 >> (64 - 8*size));
ptr = (UINT8 *)ptr + (address & lowbits_mask);
/* gross! */
// if (osd_is_bad_read_ptr(ptr, size))
// fatalerror("debug_read_opcode: cpu %d address %x mapped to invalid memory %p", cpunum_get_active(), address, ptr);
/* return based on the size */
switch (size)
{
case 1: return *(UINT8 *) ptr;
case 2: return *(UINT16 *)ptr;
case 4: return *(UINT32 *)ptr;
case 8: return *(UINT64 *)ptr;
}
return 0; /* appease compiler */
}
/*-------------------------------------------------
expression_cpu_index - return the CPU index
based on a case insensitive tag search
-------------------------------------------------*/
static int expression_cpu_index(running_machine *machine, const char *tag)
{
int index;
for (index = 0; index < ARRAY_LENGTH(machine->config->cpu); index++)
if (machine->config->cpu[index].tag != NULL && mame_stricmp(machine->config->cpu[index].tag, tag) == 0)
return index;
return -1;
}
/*-------------------------------------------------
expression_read_memory - read 1,2,4 or 8 bytes
at the given offset in the given address
space
-------------------------------------------------*/
static UINT64 expression_read_memory(const char *name, int space, UINT32 address, int size)
{
int cpuindex;
switch (space)
{
case EXPSPACE_PROGRAM:
case EXPSPACE_DATA:
case EXPSPACE_IO:
cpuindex = (name != NULL) ? expression_cpu_index(Machine, name) : cpunum_get_active();
if (cpuindex < 0)
break;
return expression_read_address_space(cpuindex, ADDRESS_SPACE_PROGRAM + (space - EXPSPACE_PROGRAM), address, size);
case EXPSPACE_OPCODE:
case EXPSPACE_RAMWRITE:
cpuindex = (name != NULL) ? expression_cpu_index(Machine, name) : cpunum_get_active();
if (cpuindex < 0)
break;
if (name == NULL)
name = Machine->config->cpu[cpunum_get_active()].tag;
return expression_read_program_direct(cpuindex, (space == EXPSPACE_OPCODE), address, size);
case EXPSPACE_EEPROM:
return expression_read_eeprom(address, size);
case EXPSPACE_REGION:
if (name == NULL)
break;
return expression_read_memory_region(name, address, size);
}
return ~(UINT64)0 >> (64 - 8*size);
}
/*-------------------------------------------------
expression_read_address_space - read memory
from a specific CPU's address space
-------------------------------------------------*/
static UINT64 expression_read_address_space(int cpuindex, int space, offs_t address, int size)
{
const debug_cpu_info *info = &global.cpuinfo[cpuindex];
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
/* only process if in of range and we have a bus */
if (cpuindex < ARRAY_LENGTH(global.cpuinfo) && info->space[space].databytes != 0)
{
/* adjust the address into a byte address */
address = ADDR2BYTE(address, info, space);
/* switch contexts and do the read */
cpu_push_context(Machine->cpu[cpuindex]);
switch (size)
{
case 1: result = debug_read_byte(space, address, TRUE); break;
case 2: result = debug_read_word(space, address, TRUE); break;
case 4: result = debug_read_dword(space, address, TRUE); break;
case 8: result = debug_read_qword(space, address, TRUE); break;
}
cpu_pop_context();
}
return result;
}
/*-------------------------------------------------
expression_read_program_direct - read memory
directly from an opcode or RAM pointer
-------------------------------------------------*/
static UINT64 expression_read_program_direct(int cpuindex, int opcode, offs_t address, int size)
{
const debug_cpu_info *info = &global.cpuinfo[cpuindex];
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
UINT8 *base;
/* only process if in of range and we have a bus */
if (cpuindex < ARRAY_LENGTH(global.cpuinfo) && info->space[ADDRESS_SPACE_PROGRAM].databytes != 0)
{
/* adjust the address into a byte address, but not if being called recursively */
if ((opcode & 2) == 0)
address = ADDR2BYTE(address, info, ADDRESS_SPACE_PROGRAM);
/* 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(cpuindex, opcode | 2, address + 0, halfsize);
r1 = expression_read_program_direct(cpuindex, opcode | 2, address + halfsize, halfsize);
/* assemble based on the target endianness */
if (info->endianness == CPU_IS_LE)
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 = info->space[ADDRESS_SPACE_PROGRAM].databytes - 1;
/* get the base of memory, aligned to the address minus the lowbits */
if (opcode & 1)
base = memory_get_op_ptr(Machine, cpuindex, address & ~lowmask, FALSE);
else
base = memory_get_read_ptr(cpuindex, ADDRESS_SPACE_PROGRAM, address & ~lowmask);
/* if we have a valid base, return the appropriate byte */
if (base != NULL)
{
if (info->endianness == CPU_IS_LE)
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(const char *rgntag, offs_t address, int size)
{
UINT8 *base = memory_region(Machine, rgntag);
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
/* make sure we get a valid base before proceeding */
if (base != NULL)
{
UINT32 length = memory_region_length(Machine, rgntag);
UINT32 flags = memory_region_flags(Machine, rgntag);
/* 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(rgntag, address + 0, halfsize);
r1 = expression_read_memory_region(rgntag, address + halfsize, halfsize);
/* assemble based on the target endianness */
if ((flags & ROMREGION_ENDIANMASK) == ROMREGION_LE)
result = r0 | (r1 << (8 * halfsize));
else
result = r1 | (r0 << (8 * halfsize));
}
/* only process if we're within range */
else if (address < length)
{
/* lowmask specified which address bits are within the databus width */
UINT32 lowmask = (1 << ((flags & ROMREGION_WIDTHMASK) >> 8)) - 1;
base += address & ~lowmask;
/* if we have a valid base, return the appropriate byte */
if ((flags & ROMREGION_ENDIANMASK) == ROMREGION_LE)
result = base[BYTE8_XOR_LE(address) & lowmask];
else
result = base[BYTE8_XOR_BE(address) & lowmask];
}
}
return result;
}
/*-------------------------------------------------
expression_read_eeprom - read EEPROM data
-------------------------------------------------*/
static UINT64 expression_read_eeprom(offs_t address, int size)
{
UINT64 result = ~(UINT64)0 >> (64 - 8*size);
UINT32 eelength, eesize;
void *base;
/* make sure we get a valid base before proceeding */
base = eeprom_get_data_pointer(&eelength, &eesize);
if (base != NULL && address < eelength)
{
/* switch off the size */
switch (eesize)
{
case 1: result &= ((UINT8 *)base)[address]; break;
case 2: result &= BIG_ENDIANIZE_INT16(((UINT16 *)base)[address]); break;
}
}
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(const char *name, int space, UINT32 address, int size, UINT64 data)
{
int cpuindex;
switch (space)
{
case EXPSPACE_PROGRAM:
case EXPSPACE_DATA:
case EXPSPACE_IO:
cpuindex = (name != NULL) ? expression_cpu_index(Machine, name) : cpunum_get_active();
if (cpuindex < 0)
break;
expression_write_address_space(cpuindex, ADDRESS_SPACE_PROGRAM + (space - EXPSPACE_PROGRAM), address, size, data);
break;
case EXPSPACE_OPCODE:
case EXPSPACE_RAMWRITE:
cpuindex = (name != NULL) ? expression_cpu_index(Machine, name) : cpunum_get_active();
if (cpuindex < 0)
break;
expression_write_program_direct(cpuindex, (space == EXPSPACE_OPCODE), address, size, data);
break;
case EXPSPACE_EEPROM:
expression_write_eeprom(address, size, data);
break;
case EXPSPACE_REGION:
if (name == NULL)
break;
expression_write_memory_region(name, address, size, data);
break;
}
}
/*-------------------------------------------------
expression_write_address_space - write memory
to a specific CPU's address space
-------------------------------------------------*/
static void expression_write_address_space(int cpuindex, int space, offs_t address, int size, UINT64 data)
{
const debug_cpu_info *info = &global.cpuinfo[cpuindex];
/* only process if in of range and we have a bus */
if (cpuindex < ARRAY_LENGTH(global.cpuinfo) && info->space[space].databytes != 0)
{
/* adjust the address into a byte address */
address = ADDR2BYTE(address, info, space);
/* switch contexts and do the write */
cpu_push_context(Machine->cpu[cpuindex]);
switch (size)
{
case 1: debug_write_byte(space, address, data, TRUE); break;
case 2: debug_write_word(space, address, data, TRUE); break;
case 4: debug_write_dword(space, address, data, TRUE); break;
case 8: debug_write_qword(space, address, data, TRUE); break;
}
cpu_pop_context();
}
}
/*-------------------------------------------------
expression_write_program_direct - write memory
directly to an opcode or RAM pointer
-------------------------------------------------*/
static void expression_write_program_direct(int cpuindex, int opcode, offs_t address, int size, UINT64 data)
{
const debug_cpu_info *info = &global.cpuinfo[cpuindex];
UINT8 *base;
/* only process if in of range and we have a bus */
if (cpuindex < ARRAY_LENGTH(global.cpuinfo) && info->space[ADDRESS_SPACE_PROGRAM].databytes != 0)
{
/* adjust the address into a byte address, but not if being called recursively */
if ((opcode & 2) == 0)
address = ADDR2BYTE(address, info, ADDRESS_SPACE_PROGRAM);
/* 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 (info->endianness == CPU_IS_LE)
{
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(cpuindex, opcode | 2, address + 0, halfsize, r0);
expression_write_program_direct(cpuindex, 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 = info->space[ADDRESS_SPACE_PROGRAM].databytes - 1;
/* get the base of memory, aligned to the address minus the lowbits */
if (opcode & 1)
base = memory_get_op_ptr(Machine, cpuindex, address & ~lowmask, FALSE);
else
base = memory_get_read_ptr(cpuindex, ADDRESS_SPACE_PROGRAM, address & ~lowmask);
/* if we have a valid base, write the appropriate byte */
if (base != NULL)
{
if (info->endianness == CPU_IS_LE)
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(const char *rgntag, offs_t address, int size, UINT64 data)
{
UINT8 *base = memory_region(Machine, rgntag);
/* make sure we get a valid base before proceeding */
if (base != NULL)
{
UINT32 length = memory_region_length(Machine, rgntag);
UINT32 flags = memory_region_flags(Machine, rgntag);
/* 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 ((flags & ROMREGION_ENDIANMASK) == ROMREGION_LE)
{
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(rgntag, address + 0, halfsize, r0);
expression_write_memory_region(rgntag, address + halfsize, halfsize, r1);
}
/* only process if we're within range */
else if (address < length)
{
/* lowmask specified which address bits are within the databus width */
UINT32 lowmask = (1 << ((flags & ROMREGION_WIDTHMASK) >> 8)) - 1;
base += address & ~lowmask;
/* if we have a valid base, set the appropriate byte */
if ((flags & ROMREGION_ENDIANMASK) == ROMREGION_LE)
base[BYTE8_XOR_LE(address) & lowmask] = data;
else
base[BYTE8_XOR_BE(address) & lowmask] = data;
global.memory_modified = TRUE;
}
}
}
/*-------------------------------------------------
expression_write_eeprom - write EEPROM data
-------------------------------------------------*/
static void expression_write_eeprom(offs_t address, int size, UINT64 data)
{
UINT32 eelength, eesize;
void *vbase = eeprom_get_data_pointer(&eelength, &eesize);
/* make sure we get a valid base before proceeding */
if (vbase != NULL && address < eelength)
{
UINT64 mask = ~(UINT64)0 >> (64 - 8*size);
/* switch off the size */
switch (eesize)
{
case 1:
{
UINT8 *base = (UINT8 *)vbase + address;
*base = (*base & ~mask) | (data & mask);
break;
}
case 2:
{
UINT16 *base = (UINT16 *)vbase + address;
UINT16 value = BIG_ENDIANIZE_INT16(*base);
value = (value & ~mask) | (data & mask);
*base = BIG_ENDIANIZE_INT16(value);
break;
}
}
global.memory_modified = TRUE;
}
}
/*-------------------------------------------------
expression_validate - validate that the
provided expression references an
appropriate name
-------------------------------------------------*/
static EXPRERR expression_validate(const char *name, int space)
{
int cpuindex;
switch (space)
{
case EXPSPACE_PROGRAM:
case EXPSPACE_DATA:
case EXPSPACE_IO:
cpuindex = (name != NULL) ? expression_cpu_index(Machine, name) : cpunum_get_active();
if (cpuindex < 0)
return (name == NULL) ? EXPRERR_MISSING_MEMORY_NAME : EXPRERR_INVALID_MEMORY_NAME;
if (cpu_get_addrbus_width(Machine->cpu[cpuindex], ADDRESS_SPACE_PROGRAM + (space - EXPSPACE_PROGRAM)) == 0)
return EXPRERR_NO_SUCH_MEMORY_SPACE;
break;
case EXPSPACE_OPCODE:
case EXPSPACE_RAMWRITE:
cpuindex = (name != NULL) ? expression_cpu_index(Machine, name) : cpunum_get_active();
if (cpuindex < 0)
return (name == NULL) ? EXPRERR_MISSING_MEMORY_NAME : EXPRERR_INVALID_MEMORY_NAME;
break;
case EXPSPACE_EEPROM:
if (name != NULL)
return EXPRERR_INVALID_MEMORY_NAME;
break;
case EXPSPACE_REGION:
if (name == NULL)
return EXPRERR_MISSING_MEMORY_NAME;
if (memory_region(Machine, name) == NULL)
return EXPRERR_INVALID_MEMORY_NAME;
break;
}
return EXPRERR_NONE;
}
/*-------------------------------------------------
debug_cpu_trace_printf - writes text to a given
CPU's trace file
-------------------------------------------------*/
void debug_cpu_trace_printf(int cpunum, const char *fmt, ...)
{
va_list va;
debug_cpu_info *info = &global.cpuinfo[cpunum];
if (info->trace.file)
{
va_start(va, fmt);
vfprintf(info->trace.file, fmt, va);
va_end(va);
}
}
/*-------------------------------------------------
debug_cpu_source_script - specifies a debug command
script to use
-------------------------------------------------*/
void debug_cpu_source_script(running_machine *machine, const char *file)
{
if (debug_source_file)
{
fclose(debug_source_file);
debug_source_file = NULL;
}
if (file)
{
debug_source_file = fopen(file, "r");
if (!debug_source_file)
{
if (mame_get_phase(machine) == MAME_PHASE_RUNNING)
debug_console_printf("Cannot open command file '%s'\n", file);
else
fatalerror("Cannot open command file '%s'", file);
}
}
}
/*-------------------------------------------------
debug_cpu_flush_traces - flushes all traces; this is
useful if a trace is going on when we fatalerror
-------------------------------------------------*/
void debug_cpu_flush_traces(void)
{
int cpunum;
for (cpunum = 0; cpunum < cpu_gettotalcpu(); cpunum++)
{
if (global.cpuinfo[cpunum].trace.file)
fflush(global.cpuinfo[cpunum].trace.file);
}
}
/***************************************************************************
VARIABLE GETTERS/SETTERS
***************************************************************************/
/*-------------------------------------------------
get_wpaddr - getter callback for the
'wpaddr' symbol
-------------------------------------------------*/
static UINT64 get_wpaddr(void *ref)
{
return global.wpaddr;
}
/*-------------------------------------------------
get_wpdata - getter callback for the
'wpdata' symbol
-------------------------------------------------*/
static UINT64 get_wpdata(void *ref)
{
return global.wpdata;
}
/*-------------------------------------------------
get_cycles - getter callback for the
'cycles' symbol
-------------------------------------------------*/
static UINT64 get_cycles(void *ref)
{
return activecpu_get_icount();
}
/*-------------------------------------------------
get_cpunum - getter callback for the
'cpunum' symbol
-------------------------------------------------*/
static UINT64 get_cpunum(void *ref)
{
return cpunum_get_active();
}
/*-------------------------------------------------
get_tempvar - getter callback for the
'tempX' symbols
-------------------------------------------------*/
static UINT64 get_tempvar(void *ref)
{
return *(UINT64 *)ref;
}
/*-------------------------------------------------
set_tempvar - setter callback for the
'tempX' symbols
-------------------------------------------------*/
static void set_tempvar(void *ref, UINT64 value)
{
*(UINT64 *)ref = value;
}
/*-------------------------------------------------
get_logunmap - getter callback for the logumap
symbols
-------------------------------------------------*/
static UINT64 get_logunmap(void *ref)
{
return memory_get_log_unmap((FPTR)ref);
}
/*-------------------------------------------------
get_beamx - get beam horizontal position
-------------------------------------------------*/
static UINT64 get_beamx(void *ref)
{
UINT64 ret = 0;
const device_config *screen = device_list_find_by_index(Machine->config->devicelist, VIDEO_SCREEN, 0);
if (screen != NULL)
ret = video_screen_get_hpos(screen);
return ret;
}
/*-------------------------------------------------
get_beamy - get beam vertical position
-------------------------------------------------*/
static UINT64 get_beamy(void *ref)
{
UINT64 ret = 0;
const device_config *screen = device_list_find_by_index(Machine->config->devicelist, VIDEO_SCREEN, 0);
if (screen != NULL)
ret = video_screen_get_vpos(screen);
return ret;
}
/*-------------------------------------------------
get_frame - get current frame number
-------------------------------------------------*/
static UINT64 get_frame(void *ref)
{
UINT64 ret = 0;
const device_config *screen = device_list_find_by_index(Machine->config->devicelist, VIDEO_SCREEN, 0);
if (screen != NULL)
ret = video_screen_get_frame_number(screen);
return ret;
}
/*-------------------------------------------------
set_logunmap - setter callback for the logumap
symbols
-------------------------------------------------*/
static void set_logunmap(void *ref, UINT64 value)
{
memory_set_log_unmap((FPTR)ref, value ? 1 : 0);
}
/*-------------------------------------------------
get_current_pc - getter callback for a CPU's
current instruction pointer
-------------------------------------------------*/
static UINT64 get_current_pc(void *ref)
{
running_machine *machine = ref;
return cpu_get_pc(machine->activecpu);
}
/*-------------------------------------------------
get_cpu_reg - getter callback for a CPU's
register symbols
-------------------------------------------------*/
static UINT64 get_cpu_reg(void *ref)
{
return cpu_get_reg(Machine->activecpu, (FPTR)ref);
}
/*-------------------------------------------------
set_cpu_reg - setter callback for a CPU's
register symbols
-------------------------------------------------*/
static void set_cpu_reg(void *ref, UINT64 value)
{
cpu_set_reg(Machine->activecpu, (FPTR)ref, value);
}
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