/********************************************************************* 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 /*************************************************************************** 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; UINT8 within_instruction_hook; UINT8 vblank_occurred; UINT8 memory_modified; 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(debug_cpu_info *info); static void prepare_for_step_overout(debug_cpu_info *info); static void process_source_file(void); static void breakpoint_check(debug_cpu_info *info, offs_t pc); static void watchpoint_check(int cpunum, int spacenum, int type, offs_t address, UINT64 value_to_write, UINT64 mem_mask); static void check_hotspots(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(int rgnclass, 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(int rgnclass, const char *rgntag, offs_t address, int size, UINT64 data); static void expression_write_eeprom(offs_t address, int size, UINT64 data); /* variable getters/setters */ static UINT64 get_wpaddr(UINT32 ref); static UINT64 get_wpdata(UINT32 ref); static UINT64 get_cycles(UINT32 ref); static UINT64 get_cpunum(UINT32 ref); static UINT64 get_tempvar(UINT32 ref); static UINT64 get_logunmap(UINT32 ref); static UINT64 get_beamx(UINT32 ref); static UINT64 get_beamy(UINT32 ref); static void set_tempvar(UINT32 ref, UINT64 value); static void set_logunmap(UINT32 ref, UINT64 value); static UINT64 get_current_pc(UINT32 ref); static UINT64 get_cpu_reg(UINT32 ref); static void set_cpu_reg(UINT32 ref, UINT64 value); /*************************************************************************** GLOBAL CONSTANTS ***************************************************************************/ const express_callbacks debug_expression_callbacks = { expression_read_memory, expression_write_memory }; /*************************************************************************** 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, 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", 0, get_wpaddr, NULL); symtable_add_register(global_symtable, "wpdata", 0, get_wpdata, NULL); symtable_add_register(global_symtable, "cycles", 0, get_cycles, NULL); symtable_add_register(global_symtable, "cpunum", 0, get_cpunum, NULL); symtable_add_register(global_symtable, "logunmap", ADDRESS_SPACE_PROGRAM, get_logunmap, set_logunmap); symtable_add_register(global_symtable, "logunmapd", ADDRESS_SPACE_DATA, get_logunmap, set_logunmap); symtable_add_register(global_symtable, "logunmapi", ADDRESS_SPACE_IO, get_logunmap, set_logunmap); symtable_add_register(global_symtable, "beamx", 0, get_beamx, NULL); symtable_add_register(global_symtable, "beamy", 0, get_beamy, 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, regnum, 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 = cpunum_endianness(cpunum); info->opwidth = cpunum_min_instruction_bytes(cpunum); /* fetch the memory accessors */ info->translate = (cpu_translate_func)cpunum_get_info_fct(cpunum, CPUINFO_PTR_TRANSLATE); info->read = (cpu_read_func)cpunum_get_info_fct(cpunum, CPUINFO_PTR_READ); info->write = (cpu_write_func)cpunum_get_info_fct(cpunum, CPUINFO_PTR_WRITE); info->readop = (cpu_readop_func)cpunum_get_info_fct(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", 0, get_current_pc, 0); /* add all registers into it */ for (regnum = 0; regnum < MAX_REGS; regnum++) { const char *str = cpunum_reg_string(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, 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 = cpunum_databus_width(cpunum, spacenum); int logwidth = cpunum_logaddr_width(cpunum, spacenum); int physwidth = cpunum_addrbus_width(cpunum, spacenum); int addrshift = cpunum_addrbus_shift(cpunum, spacenum); int pageshift = cpunum_page_shift(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); 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(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(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(-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 a VBLANK occurred, check on things */ if (global.vblank_occurred && global.execution_state != EXECUTION_STATE_STOPPED) { 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)) { global.execution_state = EXECUTION_STATE_STOPPED; debug_console_printf("User-initiated break\n"); } /* while we're here, check for a periodic update */ else 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(); } } /* 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(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(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); /* 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(); /* 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(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(cpunum, spacenum, WATCHPOINT_READ, address, 0, mem_mask); /* check hotspots */ if (info->hotspots != NULL) check_hotspots(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(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 -------------------------------------------------*/ 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; } /*------------------------------------------------- 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); if (info->trace.action != NULL) 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, const char *fmt, ...) { va_list arg; va_start(arg, fmt); debug_console_vprintf(fmt, arg); va_end(arg); global.execution_state = EXECUTION_STATE_STOPPED; if (global.livecpu != NULL) compute_debug_flags(machine, global.livecpu); } /*------------------------------------------------- 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(char *buffer, offs_t pc) { const debug_cpu_info *cpuinfo = debug_get_cpu_info(cpu_getactivecpu()); int maxbytes = activecpu_max_instruction_bytes(); 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 activecpu_dasm(buffer, pc, opbuf, argbuf); } static void perform_trace(debug_cpu_info *info) { offs_t pc = activecpu_get_pc(); 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(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(&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(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(debug_cpu_info *info) { offs_t pc = activecpu_get_pc(); char dasmbuffer[100]; offs_t dasmresult; /* disassemble the current instruction and get the flags */ 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; 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(void) { /* 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(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(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(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(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(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(info); return bp->index; } /*------------------------------------------------- debug_cpu_breakpoint_clear - clear a breakpoint -------------------------------------------------*/ int debug_cpu_breakpoint_clear(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(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(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(info); return 1; } } return 0; } /*************************************************************************** WATCHPOINTS ***************************************************************************/ /*------------------------------------------------- watchpoint_update_flags - update the CPU's watchpoint flags -------------------------------------------------*/ static void watchpoint_update_flags(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(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) 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(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), activecpu_get_pc()); 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), activecpu_get_pc()); 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(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(info, spacenum); return wp->index; } /*------------------------------------------------- debug_cpu_watchpoint_clear - clear a watchpoint -------------------------------------------------*/ int debug_cpu_watchpoint_clear(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(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(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(info, spacenum); return 1; } } return 0; } /*************************************************************************** HOTSPOTS ***************************************************************************/ /*------------------------------------------------- debug_cpu_hotspot_track - enable/disable tracking of hotspots -------------------------------------------------*/ int debug_cpu_hotspot_track(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(info, ADDRESS_SPACE_PROGRAM); return 1; } /*------------------------------------------------- check_hotspots - check for hotspots on a memory read access -------------------------------------------------*/ static void check_hotspots(int cpunum, int spacenum, offs_t address) { debug_cpu_info *info = &global.cpuinfo[cpunum]; offs_t pc = activecpu_get_pc(); 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[cpu_getactivecpu()]; 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(1); /* 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(0); 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[cpu_getactivecpu()]; 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[cpu_getactivecpu()].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(1); /* 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(0); } 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[cpu_getactivecpu()]; 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[cpu_getactivecpu()].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(1); /* 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(0); } 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[cpu_getactivecpu()]; 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[cpu_getactivecpu()].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(1); /* 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(0); } 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[cpu_getactivecpu()]; /* 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(1); /* 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(0); 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[cpu_getactivecpu()]; /* 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[cpu_getactivecpu()].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(1); /* 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(0); 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[cpu_getactivecpu()]; /* 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[cpu_getactivecpu()].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(1); /* 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(0); 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[cpu_getactivecpu()]; /* 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[cpu_getactivecpu()].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(1); /* 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(0); 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[cpu_getactivecpu()]; 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(cpu_getactivecpu(), 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", cpu_getactivecpu(), 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_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) ? mame_find_cpu_index(Machine, name) : cpu_getactivecpu(); 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) ? mame_find_cpu_index(Machine, name) : cpu_getactivecpu(); if (cpuindex < 0) break; if (name == NULL) name = Machine->config->cpu[cpu_getactivecpu()].tag; return expression_read_program_direct(cpuindex, (space == EXPSPACE_OPCODE), address, size); case EXPSPACE_EEPROM: return expression_read_eeprom(address, size); case EXPSPACE_CPU: if (name == NULL) break; return expression_read_memory_region(RGNCLASS_CPU, name, address, size); case EXPSPACE_USER: if (name == NULL) break; return expression_read_memory_region(RGNCLASS_USER, name, address, size); case EXPSPACE_GFX: if (name == NULL) break; return expression_read_memory_region(RGNCLASS_GFX, name, address, size); case EXPSPACE_SOUND: if (name == NULL) break; return expression_read_memory_region(RGNCLASS_SOUND, 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 */ cpuintrf_push_context(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; } cpuintrf_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(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(int rgnclass, const char *rgntag, offs_t address, int size) { UINT8 *base = memory_region(Machine, rgnclass, 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, rgnclass, rgntag); UINT32 flags = memory_region_flags(Machine, rgnclass, 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(rgnclass, rgntag, address + 0, halfsize); r1 = expression_read_memory_region(rgnclass, 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) ? mame_find_cpu_index(Machine, name) : cpu_getactivecpu(); 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) ? mame_find_cpu_index(Machine, name) : cpu_getactivecpu(); 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_CPU: if (name == NULL) break; expression_write_memory_region(RGNCLASS_CPU, name, address, size, data); break; case EXPSPACE_USER: if (name == NULL) break; expression_write_memory_region(RGNCLASS_USER, name, address, size, data); break; case EXPSPACE_GFX: if (name == NULL) break; expression_write_memory_region(RGNCLASS_GFX, name, address, size, data); break; case EXPSPACE_SOUND: if (name == NULL) break; expression_write_memory_region(RGNCLASS_SOUND, 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 */ cpuintrf_push_context(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; } cpuintrf_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(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(int rgnclass, const char *rgntag, offs_t address, int size, UINT64 data) { UINT8 *base = memory_region(Machine, rgnclass, rgntag); /* make sure we get a valid base before proceeding */ if (base != NULL) { UINT32 length = memory_region_length(Machine, rgnclass, rgntag); UINT32 flags = memory_region_flags(Machine, rgnclass, 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(rgnclass, rgntag, address + 0, halfsize, r0); expression_write_memory_region(rgnclass, 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; } } /*------------------------------------------------- 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(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(UINT32 ref) { return global.wpaddr; } /*------------------------------------------------- get_wpdata - getter callback for the 'wpdata' symbol -------------------------------------------------*/ static UINT64 get_wpdata(UINT32 ref) { return global.wpdata; } /*------------------------------------------------- get_cycles - getter callback for the 'cycles' symbol -------------------------------------------------*/ static UINT64 get_cycles(UINT32 ref) { return activecpu_get_icount(); } /*------------------------------------------------- get_cpunum - getter callback for the 'cpunum' symbol -------------------------------------------------*/ static UINT64 get_cpunum(UINT32 ref) { return cpu_getactivecpu(); } /*------------------------------------------------- get_tempvar - getter callback for the 'tempX' symbols -------------------------------------------------*/ static UINT64 get_tempvar(UINT32 ref) { return global.tempvar[ref]; } /*------------------------------------------------- set_tempvar - setter callback for the 'tempX' symbols -------------------------------------------------*/ static void set_tempvar(UINT32 ref, UINT64 value) { global.tempvar[ref] = value; } /*------------------------------------------------- get_logunmap - getter callback for the logumap symbols -------------------------------------------------*/ static UINT64 get_logunmap(UINT32 ref) { return memory_get_log_unmap(ref); } /*------------------------------------------------- get_beamx - get beam horizontal position -------------------------------------------------*/ static UINT64 get_beamx(UINT32 ref) { UINT64 ret = 0; const device_config *screen = device_list_find_by_index(Machine->config->devicelist, VIDEO_SCREEN, ref); if (screen != NULL) ret = video_screen_get_hpos(screen); return ret; } /*------------------------------------------------- get_beamy - get beam vertical position -------------------------------------------------*/ static UINT64 get_beamy(UINT32 ref) { UINT64 ret = 0; const device_config *screen = device_list_find_by_index(Machine->config->devicelist, VIDEO_SCREEN, ref); if (screen != NULL) ret = video_screen_get_vpos(screen); return ret; } /*------------------------------------------------- set_logunmap - setter callback for the logumap symbols -------------------------------------------------*/ static void set_logunmap(UINT32 ref, UINT64 value) { memory_set_log_unmap(ref, value ? 1 : 0); } /*------------------------------------------------- get_current_pc - getter callback for a CPU's current instruction pointer -------------------------------------------------*/ static UINT64 get_current_pc(UINT32 ref) { return activecpu_get_pc(); } /*------------------------------------------------- get_cpu_reg - getter callback for a CPU's register symbols -------------------------------------------------*/ static UINT64 get_cpu_reg(UINT32 ref) { return activecpu_get_reg(ref); } /*------------------------------------------------- set_cpu_reg - setter callback for a CPU's register symbols -------------------------------------------------*/ static void set_cpu_reg(UINT32 ref, UINT64 value) { activecpu_set_reg(ref, value); }