void vm_op_hwq(vm_t* vm, uint16_t a)
{
hw_t queried_device;
uint16_t* store_a = vm_internal_get_store(vm, REG_A, POS__);
uint16_t* store_b = vm_internal_get_store(vm, REG_B, POS__);
uint16_t* store_c = vm_internal_get_store(vm, REG_C, POS__);
uint16_t* store_x = vm_internal_get_store(vm, REG_X, POS__);
uint16_t* store_y = vm_internal_get_store(vm, REG_Y, POS__);
uint16_t val_a = vm_resolve_value(vm, a, POS_A);
OP_NUM_CYCLES(4);
VM_SKIP_RESET;
if (val_a < vm_hw_count(vm))
{
queried_device = vm_hw_get_device(vm, val_a);
printd(LEVEL_DEBUG, "hwq: index %d %08X\n", val_a, queried_device.id);
*store_a = (queried_device.id & 0x0000FFFF) >> 0;
*store_b = (queried_device.id & 0xFFFF0000) >> 16;
*store_c = queried_device.version;
*store_x = (queried_device.manufacturer & 0x0000FFFF) >> 0;
*store_y = (queried_device.manufacturer & 0xFFFF0000) >> 16;
VM_HOOK_FIRE(store_a);
VM_HOOK_FIRE(store_b);
VM_HOOK_FIRE(store_c);
VM_HOOK_FIRE(store_x);
VM_HOOK_FIRE(store_y);
}
void vm_op_fire(vm_t* vm)
{
static int screen_id = -1;
uint16_t count = vm_hw_count(vm), i = 0;
hw_t* device;
if (screen_id == -1)
{
for (i = 0; i < count; i++)
{
device = vm_hw_get_device(vm, i);
if (device != NULL && device->id == 0x7349F615)
{
vm->registers[REG_A] = 0;
vm->registers[REG_B] = 0x1000;
vm_hw_interrupt(vm, i);
vm->registers[REG_A] = 1;
vm->registers[REG_B] = 0x1000 + 0x17F;
vm_hw_interrupt(vm, i);
screen_id = i;
break;
}
}
}
if (vm->fire_cycles < vm->fire_cycles_target)
{
vm->fire_cycles++;
return;
}
else
{
uint16_t pos = 0x1000, length = 0, fill = 0, idx = 0;
vm->fire_cycles = 0;
vm->fire_cycles_target = DCPU_TICKS_KHZ * 1000;
while (pos < 0x1000 + 0x300)
{
length = rand() % 100;
fill = rand() % 0x10000;
for (idx = 0; idx < length; idx++)
{
vm->ram[pos + idx] = fill;
vm_hook_fire(vm, pos + idx, HOOK_ON_WRITE, NULL);
}
if (pos + length < pos)
break;
pos += length;
}
}
}
void ddbg_hardware_change_hook(vm_t* vm, uint16_t id, void* ud)
{
#ifdef JDIEZ_IS_THIS_NEEDED
FILE* output = (w == NULL) ? stderr : w;
hw_t device = vm_hw_get_device(vm, id);
// This switch uses curly braces because I need to be able to declare variables
// there, since I don't know the type of the struct without checking the ID.
fprintf(output, "hw:");
switch (device.id)
{
case LEM1802_ID:
{
struct lem1802_hardware* hw = (struct lem1802_hardware*) ud;
fprintf(output, "%d:%04x:%u:%u:%u:%u\n",
id, LEM1802_ID,
hw->palette_location,
hw->font_location,
hw->screen_location,
hw->border_color);
break;
}
case TIMER_ID:
{
struct timer_hardware* hw = (struct timer_hardware*) ud;
fprintf(output, "%d:%04x:%u:%u\n",
id, TIMER_ID,
hw->clock_target,
hw->message);
break;
}
}
fflush(output);
#endif
}
int main(int argc, char* argv[])
{
// Define our variables.
FILE* load;
uint16_t flash[0x10000];
char leading[0x100];
unsigned int i;
bool uread = true;
vm_t* vm;
int nerrors;
bstring ss, st;
host_context_t* dtemu = malloc(sizeof(host_context_t));
const char* warnprefix = "no-";
// Define arguments.
struct arg_lit* show_help = arg_lit0("h", "help", "Show this help.");
struct arg_file* input_file = arg_file1(NULL, NULL, "<file>", "The input file, or - to read from standard input.");
struct arg_file* execution_dump_file = arg_file0("e", "execution-dump", "<file>", "Produce a very large execution dump file.");
struct arg_lit* debug_mode = arg_lit0("d", "debug", "Show each executed instruction.");
struct arg_lit* terminate_mode = arg_lit0("t", "show-on-terminate", "Show state of machine when program is terminated.");
struct arg_lit* headless_mode = arg_lit0("h", "headless", "Run machine witout displaying monitor and SPED output");
struct arg_lit* legacy_mode = arg_lit0("l", "legacy", "Automatically initialize hardware to legacy values.");
struct arg_str* warning_policies = arg_strn("W", NULL, "policy", 0, _WARN_COUNT * 2 + 10, "Modify warning policies.");
struct arg_lit* little_endian_mode = arg_lit0(NULL, "little-endian", "Use little endian serialization (for compatibility with older versions).");
struct arg_lit* verbose = arg_litn("v", NULL, 0, LEVEL_EVERYTHING - LEVEL_DEFAULT, "Increase verbosity.");
struct arg_lit* quiet = arg_litn("q", NULL, 0, LEVEL_DEFAULT - LEVEL_SILENT, "Decrease verbosity.");
struct arg_int* radiation = arg_intn("r", NULL, "<n>", 0, 1, "Radiation factor (higher is less radiation)");
struct arg_lit* catch_fire = arg_lit0("c", "catch-fire", "The virtual machine should catch fire instead of halting.");
struct arg_end* end = arg_end(20);
void* argtable[] = { input_file, warning_policies, debug_mode, execution_dump_file, terminate_mode, headless_mode, legacy_mode, little_endian_mode, radiation, catch_fire, verbose, quiet, end };
// Parse arguments.
nerrors = arg_parse(argc, argv, argtable);
if (nerrors != 0 || show_help->count != 0)
{
if (show_help->count != 0)
arg_print_errors(stdout, end, "emulator");
printd(LEVEL_DEFAULT, "syntax:\n dtemu");
arg_print_syntax(stderr, argtable, "\n");
printd(LEVEL_DEFAULT, "options:\n");
arg_print_glossary(stderr, argtable, " %-25s %s\n");
arg_freetable(argtable, sizeof(argtable) / sizeof(argtable[0]));
return 1;
}
// Set verbosity level.
debug_setlevel(LEVEL_DEFAULT + verbose->count - quiet->count);
// Show version information.
version_print(bautofree(bfromcstr("Emulator")));
// Set global path variable.
osutil_setarg0(bautofree(bfromcstr(argv[0])));
// Set endianness.
isetmode(little_endian_mode->count == 0 ? IMODE_BIG : IMODE_LITTLE);
// Set up warning policies.
dsetwarnpolicy(warning_policies);
// Set up error handling.
if (dsethalt())
{
// Handle the error.
dautohandle();
printd(LEVEL_ERROR, "emulator: error occurred.\n");
arg_freetable(argtable, sizeof(argtable) / sizeof(argtable[0]));
return 1;
}
// Zero out the flash space.
for (i = 0; i < 0x10000; i++)
flash[i] = 0x0;
// Zero out the leading space.
for (i = 0; i < 0x100; i++)
leading[i] = 0x0;
// Load from either file or stdin.
if (strcmp(input_file->filename[0], "-") != 0)
{
// Open file.
load = fopen(input_file->filename[0], "rb");
if (load == NULL)
dhalt(ERR_EMU_LOAD_FILE_FAILED, input_file->filename[0]);
}
else
{
// Windows needs stdin in binary mode.
#ifdef _WIN32
_setmode(_fileno(stdin), _O_BINARY);
#endif
// Set load to stdin.
load = stdin;
}
// Read leading component.
for (i = 0; i < strlen(ldata_objfmt); i++)
leading[i] = fgetc(load);
fseek(load, 0, SEEK_SET);
// Read up to 0x10000 words.
for (i = 0; i < 0x10000 && !feof(load); i++)
iread(&flash[i], load);
fclose(load);
// Check to see if the first X bytes matches the header
// for intermediate code and stop if it does.
ss = bfromcstr("");
st = bfromcstr(ldata_objfmt);
for (i = 0; i < strlen(ldata_objfmt); i++)
bconchar(ss, leading[i]);
if (biseq(ss, st))
dhalt(ERR_INTERMEDIATE_EXECUTION, NULL);
// Set up the host context.
glfwInit();
dtemu->create_context = &dtemu_create_context;
dtemu->activate_context = &dtemu_activate_context;
dtemu->swap_buffers = &dtemu_swap_buffers;
dtemu->destroy_context = &dtemu_destroy_context;
dtemu->get_ud = &dtemu_get_ud;
// And then use the VM.
vm = vm_create();
vm->debug = (debug_mode->count > 0);
vm_flash(vm, flash);
// Set radiation and catch fire settings.
if (radiation->count == 1)
vm->radiation_factor = radiation->ival[0];
if (catch_fire->count == 1)
vm->can_fire = true;
// Init hardware.
vm_hw_clock_init(vm);
if (headless_mode->count < 1)
vm->host = dtemu;
vm_hw_sped3_init(vm);
vm_hw_lem1802_init(vm);
vm_hw_m35fd_init(vm);
vm_hw_lua_init(vm);
if (legacy_mode->count > 0)
{
for (i = 0; i < vm_hw_count(vm); i++) {
hw_t* device = vm_hw_get_device(vm, i);
if (device == NULL)
continue;
if (device->id == 0x7349F615 && device->manufacturer == 0x1C6C8B36)
{
vm_hw_lem1802_mem_set_screen((struct lem1802_hardware*)device->userdata, 0x8000);
break;
}
}
}
vm_execute(vm, execution_dump_file->count > 0 ? execution_dump_file->filename[0] : NULL);
if (terminate_mode->count > 0)
{
fprintf(stderr, "\n");
fprintf(stderr, "A: 0x%04X [A]: 0x%04X\n", vm->registers[REG_A], vm->ram[vm->registers[REG_A]]);
fprintf(stderr, "B: 0x%04X [B]: 0x%04X\n", vm->registers[REG_B], vm->ram[vm->registers[REG_B]]);
fprintf(stderr, "C: 0x%04X [C]: 0x%04X\n", vm->registers[REG_C], vm->ram[vm->registers[REG_C]]);
fprintf(stderr, "X: 0x%04X [X]: 0x%04X\n", vm->registers[REG_X], vm->ram[vm->registers[REG_X]]);
fprintf(stderr, "Y: 0x%04X [Y]: 0x%04X\n", vm->registers[REG_Y], vm->ram[vm->registers[REG_Y]]);
fprintf(stderr, "Z: 0x%04X [Z]: 0x%04X\n", vm->registers[REG_Z], vm->ram[vm->registers[REG_Z]]);
fprintf(stderr, "I: 0x%04X [I]: 0x%04X\n", vm->registers[REG_I], vm->ram[vm->registers[REG_I]]);
fprintf(stderr, "J: 0x%04X [J]: 0x%04X\n", vm->registers[REG_J], vm->ram[vm->registers[REG_J]]);
fprintf(stderr, "PC: 0x%04X SP: 0x%04X\n", vm->pc, vm->sp);
fprintf(stderr, "EX: 0x%04X IA: 0x%04X\n", vm->ex, vm->ia);
}
vm_hw_lua_free(vm);
vm_free(vm);
arg_freetable(argtable, sizeof(argtable) / sizeof(argtable[0]));
glfwTerminate();
return 0;
}