void neogeo_main(void)
{
Loop = LOOP_RESET;
while (Loop >= LOOP_RESTART)
{
Loop = LOOP_EXEC;
ui_popup_reset();
fatal_error = 0;
video_clear_screen();
if (memory_init())
{
if (sound_init())
{
if (input_init())
{
if (neogeo_init())
{
neogeo_run();
}
neogeo_exit();
}
input_shutdown();
}
sound_exit();
}
memory_shutdown();
show_fatal_error();
}
}
char *handle_directive (const char *ptr) {
static const char *dirs[] = {"db", "dw", "end", "org", "byte", "word", "fill", "block", "addinstr",
"echo", "error", "list", "nolist", "equ", "show", "option", "seek", "assume", "dl", "long", NULL};
char name_buf[32];
int dir;
//same deal as handle_preop, just with directives instead
bool valid_directive = false;
unsigned name_len = 0;
while (ptr[name_len] != 0 && !isspace(ptr[name_len])) {
name_len++;
}
// If longer than name_buf, it can't be a valid directive.
if (name_len < sizeof(name_buf)) {
// Copy string for comparing against
memcpy(name_buf, ptr, name_len);
name_buf[name_len] = 0;
dir = 0;
while (dirs[dir]) {
if (!strcasecmp(dirs[dir], name_buf)) {
valid_directive = true;
break;
}
dir++;
}
}
if (!valid_directive)
return handle_opcode_or_macro ((char *) ptr - 1);
ptr = skip_whitespace(&ptr[name_len]);
switch (dir) {
case 0: //DB
case 4: //BYTE
{
ptr = parse_emit_string (ptr, ES_BYTE, NULL);
break;
}
case 1: //DW
case 5: //WORD
{
ptr = parse_emit_string (ptr, ES_WORD, NULL);
break;
}
case 18: //DL
case 19: //LONG
{
ptr = parse_emit_string (ptr, ES_LONG, NULL);
break;
}
case 3: //ORG
{
int value;
char value_str[256] = "";
bool fResult = read_expr(&ptr, value_str, "");
if (fResult == true)
{
if (parse_num(value_str, &value) == true)
{
if (value < 0)
{
SetLastSPASMError(SPASM_ERR_INVALID_ADDRESS, skip_whitespace(value_str));
}
else
{
program_counter = value;
}
}
}
if ((fResult == false) || (strlen(skip_whitespace(value_str)) == 0))
{
SetLastSPASMError(SPASM_ERR_VALUE_EXPECTED);
}
break;
}
case 6: //FILL
case 7: //BLOCK
{
int size, fill_value;
char szSize[256], szFill[256];
bool old_listing_on = listing_on;
//listing_on = false;
read_expr (&ptr, szSize, ",");
parse_num (szSize, &size);
ptr = skip_whitespace (ptr);
if (*ptr == ',')
ptr++;
if (read_expr (&ptr, szFill, "")) {
//if there's a value to fill the block with, then handle that
parse_num (szFill, &fill_value);
} else {
//otherwise use 0
fill_value = 0;
}
if (size < 0) {
SetLastSPASMError(SPASM_ERR_SIZE_MUST_BE_POSITIVE, szSize);
listing_on = old_listing_on;
break;
}
if (fill_value < -128 || fill_value > 255)
{
SetLastSPASMWarning(SPASM_WARN_TRUNCATING_8);
}
program_counter += size;
stats_datasize += size;
while (size-- > 0)
write_out (fill_value & 0xFF);
//listing_on = old_listing_on;
break;
}
case 8: //ADDINSTR
{
instr *instr = (struct _instr *) malloc (sizeof (struct _instr));
char word[256];
int result;
char *mnemonic;
size_t i, base = 0, size_left;
int j;
opcode *last_opcode = NULL, *curr_opcode = all_opcodes, *new_opcode;
memset (instr, 0, sizeof (struct _instr));
// Mnemonic
if (!read_expr (&ptr, word, " \t")) goto addinstr_fail;
mnemonic = strdup (word);
// Args
if (!read_expr (&ptr, word, " \t")) goto addinstr_fail;
reduce_string (word);
instr->args = strdup (word);
// Instruction data
if (!read_expr (&ptr, word, " \t")) goto addinstr_fail;
conv_hex (word, word + strlen (word), &result);
instr->instr_size = strlen (word) / 2;
for (j = instr->instr_size - 1; j >= 0; j--)
instr->instr_data[instr->instr_size - j - 1] = (result >> (j * 8)) & 0xFF;
// Size
if (!read_expr (&ptr, word, " \t")) goto addinstr_fail;
if (!parse_num (word, &instr->size)) goto addinstr_fail;
// Class
read_expr (&ptr, word, " \t");
// Extended
read_expr (&ptr, word, " \t");
// End data ...
if (read_expr (&ptr, word, " \t")) {
int output;
conv_hex (word, word + strlen (word), &output);
instr->end_data = (unsigned char) output;
instr->has_end_data = true;
}
size_left = instr->size - instr->instr_size;
while ((i = strcspn (&instr->args[base], "*")) + base != strlen (instr->args)) {
switch (size_left - instr->has_end_data) {
case 2: ((char *) instr->args)[base+i] = '*'; break;
case 1: ((char *) instr->args)[base+i] = '&'; break;
default:
((char *) instr->args)[base+i] = '&'; break;
//show_error ("Invalid wildcard type in ADDRINSTR");
//goto addinstr_fail;
break;
}
size_left -= 2;
base += i + 1;
}
new_opcode = (opcode *) malloc (sizeof (opcode));
new_opcode->name = mnemonic;
new_opcode->num_instrs = 1;
new_opcode->use_count = 0;
new_opcode->instrs = instr;
new_opcode->is_added = true;
while (curr_opcode) {
if (strcasecmp (mnemonic, curr_opcode->name) == 0)
break;
last_opcode = curr_opcode;
curr_opcode = curr_opcode->next;
}
if (curr_opcode == NULL) {
last_opcode->next = new_opcode;
new_opcode->next = NULL;
} else {
new_opcode->next = curr_opcode;
if (last_opcode)
last_opcode->next = new_opcode;
else
all_opcodes = new_opcode;
}
// You can ignore class, etc
ptr = skip_to_line_end (ptr);
break;
addinstr_fail:
SetLastSPASMError(SPASM_ERR_INVALID_ADDINSTR);
if (instr && instr->args) free ((void *) instr->args);
if (instr) free (instr);
ptr = skip_to_line_end(ptr);
break;
}
case 9: //ECHO
{
if (ptr[0] == '>')
{
char target_format[2] = "w";
FILE *echo_target;
char filename[MAX_PATH];
char temp_filename[MAX_PATH];
define_t *define;
if ((++ptr)[0] == '>')
target_format[0] = 'a';
ptr = skip_whitespace (ptr + 1);
if (is_end_of_code_line (ptr)) {
SetLastSPASMError(SPASM_ERR_FILENAME_EXPECTED);
return NULL;
}
read_expr (&ptr, filename, " \t");
// Is the filename given a macro?
if ((define = search_defines (filename)))
strncpy (filename, skip_whitespace(define->contents), sizeof (filename));
reduce_string(filename);
if (is_abs_path(filename)) {
strncpy(temp_filename, skip_whitespace (filename), sizeof (temp_filename));
} else {
strncpy(temp_filename, temp_path, sizeof (temp_filename));
strncat(temp_filename, "/", sizeof (temp_filename) - 1);
strncat(temp_filename, skip_whitespace (filename), sizeof (temp_filename) - 1);
}
echo_target = fopen (fix_filename (temp_filename), target_format);
if (echo_target == NULL) {
SetLastSPASMError(SPASM_ERR_NO_ACCESS, filename);
return NULL;
}
//if the output's redirected to a file, process it now
WORD orig_attributes = save_console_attributes();
set_console_attributes (COLOR_GREEN);
ptr = parse_emit_string (ptr, ES_ECHO, echo_target);
restore_console_attributes(orig_attributes);
} else {
char expr[256];
read_expr (&ptr, expr, "");
// If it craps out for some reason, save it for the next pass
int session = StartSPASMErrorSession();
parse_emit_string (expr, ES_ECHO, NULL);
if (IsSPASMErrorSessionFatal(session) == true)
{
add_pass_two_output (expr, OUTPUT_ECHO);
}
else if (GetSPASMErrorSessionErrorCount(session) > 0)
{
WORD orig_attributes = save_console_attributes();
set_console_attributes(COLOR_GREEN);
int internal_session = StartSPASMErrorSession();
parse_emit_string (expr, ES_ECHO, stdout);
restore_console_attributes(orig_attributes);
EndSPASMErrorSession(internal_session);
ReplaySPASMErrorSession(session);
}
else
{
expand_buf_t *echo = eb_init(256);
parse_emit_string (expr, ES_FCREATE, echo);
char *echo_string = eb_extract(echo);
eb_free(echo);
char *expanded_string = escape_string(echo_string);
free(echo_string);
add_pass_two_output (expanded_string, OUTPUT_ECHO);
free(expanded_string);
}
EndSPASMErrorSession(session);
}
break;
}
case 10: //ERROR
{
expand_buf_t *eb = eb_init(64);
ptr = parse_emit_string(ptr, ES_FCREATE, eb);
char *error_str = eb_extract(eb);
eb_free(eb);
SetLastSPASMError(SPASM_ERR_CUSTOM, error_str);
free(error_str);
break;
}
case 11: //LIST
{
//if listing was off already, then the listing
// for the start of this line wouldn't have been
// written, so make sure the end doesn't get
// written either
if (!listing_on)
listing_for_line_done = true;
listing_on = true;
break;
}
case 12: //NOLIST
{
//if listing is on, then it would've written
// the starting stuff for this line already,
// so take that out
if ((mode & MODE_LIST) && listing_on)
listing_offset -= 14;
listing_on = false;
break;
}
case 13: //EQU
{
// Finally, a proper .equ!
int value;
char value_str[256];
read_expr (&ptr, value_str, "");
if (!parse_num (value_str, &value) && parser_forward_ref_err) {
} else {
if (last_label == NULL)
SetLastSPASMError(SPASM_ERR_EQUATE_MISSING_LABEL);
else
last_label->value = value;
}
break;
}
case 14: //SHOW
{
char name[256];
define_t *define;
//get the name
read_expr (&ptr, name, "");
define = search_defines (name);
if (define == NULL) {
//if it doesn't exist yet, save it for the second pass
add_pass_two_output (name, OUTPUT_SHOW);
} else {
//otherwise, show it now
show_define (define);
}
break;
}
case 15: //OPTION
{
char *word = NULL;
arg_context_t context = ARG_CONTEXT_INITIALIZER;
while ((word = extract_arg_string(&ptr, &context)) != NULL)
{
char name[256], *expr = word;
char *define_name;
define_t *define;
read_expr(&expr, name, "=");
if (*expr == '=')
{
expr++;
}
if (!(isalpha(name[0]))) {
SetLastSPASMError(SPASM_ERR_INVALID_OPTION, name);
return (char *) ptr;
}
if (is_end_of_code_line (skip_whitespace (expr)))
expr = strdup ("1");
else {
//if (!parse_num (expr, NULL))
// return NULL;
expr = strdup (expr);
}
if (strlen (name) == 0) {
show_error ("Invalid option statement");
return NULL;
}
define_name = (char *) malloc (strlen (name) + 3);
strcat (strcpy (define_name, "__"), name);
define = add_define (define_name, NULL);
set_define (define, expr, -1, false);
free(expr);
}
break;
}
case 16: //SEEK
{
int value;
char value_str[256];
read_expr (&ptr, value_str, "");
parse_num (value_str, (int *) &value);
//printf("value_str: %s\npc: %d\n", value_str, program_counter);
if (value > program_counter && (value - program_counter > output_buf_size - (out_ptr - output_contents)))
show_fatal_error ("Seek location %d out of bounds", value);
else if (value < program_counter && (value - (int) program_counter + (out_ptr - output_contents) < 0))
show_fatal_error ("Seek value %d too small", value);
out_ptr += value - ((int) program_counter);
//printf("base: %p; ptr: %p\n", output_contents, out_ptr);
program_counter = value;
break;
}
case 17: //ASSUME
{
char args[256];
read_expr(&ptr, args, "");
char word[256];
char *value_str = args;
read_expr(&value_str, word, "=");
int value = 1;
bool success = true;
if (*value_str == '=') {
success = parse_num(value_str+1, &value);
}
if (!(mode & MODE_EZ80) || strcasecmp(word, "adl") || !success) {
SetLastSPASMError(SPASM_ERR_INVALID_OPTION, args);
return (char *)ptr;
}
adl_mode = (value != 0);
break;
}
}
return (char *) ptr;
}
int flash_original_fw(int len)
{
unsigned char reset_vector[8];
int pos, i, rc;
unsigned char *p8;
uint16_t *p16;
rb->lcd_puts(0, 3, "Critical section...");
rb->lcd_update();
p8 = (char *)FB;
rb->memcpy(reset_vector, p8, sizeof reset_vector);
/* Erase the boot sector and write back the reset vector. */
cfi_erase_sector(FB);
p16 = (uint16_t *)reset_vector;
for (i = 0; i < (long)sizeof(reset_vector)/2; i++)
cfi_program_word(FB + i, p16[i]);
rb->lcd_puts(0, 4, "Flashing orig. FW");
rb->lcd_update();
/* Erase the program flash. */
for (i = 1; i < BOOTLOADER_ERASEGUARD && (i-1)*4096 < len; i++)
{
rc = cfi_erase_sector(FB + (SEC_SIZE/2) * i);
rb->lcd_putsf(0, 5, "Erase: 0x%03x (%d)", i, rc);
rb->lcd_update();
}
rb->lcd_puts(0, 6, "Programming");
rb->lcd_update();
pos = 0x00000008/2;
p16 = (uint16_t *)audiobuf;
for (i = 0; i < len/2 && pos + i < (BOOTLOADER_ENTRYPOINT/2); i++)
cfi_program_word(FB + pos + i, p16[i]);
rb->lcd_puts(0, 7, "Verifying");
rb->lcd_update();
/* Verify reset vectors. */
p8 = (char *)FB;
for (i = 0; i < 8; i++)
{
if (p8[i] != reset_vector[i])
{
rb->splash(HZ*3, "Bootvector corrupt!");
show_fatal_error();
break;
}
}
/* Verify */
p8 = (char *)0x00000008;
for (i = 0; i < len; i++)
{
if (p8[i] != audiobuf[i])
{
rb->splash(HZ*3, "Verify failed!");
rb->splashf(HZ*10, "at: 0x%08x", i);
return -5;
}
}
rb->splash(HZ*2, "Success");
return 0;
}
int flash_bootloader(const char *filename)
{
char *bootsector;
int pos, i, len, rc;
unsigned long checksum, sum;
unsigned char *p8;
uint16_t *p16;
bootsector = audiobuf;
audiobuf += SEC_SIZE;
audiobuf_size -= SEC_SIZE;
if (!confirm("Update bootloader?"))
return -2;
len = load_firmware_file(filename, &checksum);
if (len <= 0)
return len * 10;
if (len > 0xFFFF)
{
rb->splash(HZ*3, "Too big bootloader");
return -1;
}
/* Verify the crc32 checksum also. */
if (!detect_valid_bootloader(audiobuf, len))
{
rb->splash(HZ*3, "Incompatible/Untested bootloader");
return -1;
}
rb->lcd_puts(0, 3, "Flashing...");
rb->lcd_update();
/* Backup the bootloader sector first. */
p8 = (char *)FB;
rb->memcpy(bootsector, p8, SEC_SIZE);
/* Erase the boot sector and write a proper reset vector. */
cfi_erase_sector(FB);
p16 = (uint16_t *)audiobuf;
for (i = 0; i < 8/2; i++)
cfi_program_word(FB + i, p16[i]);
/* And restore original content for original FW to function. */
p16 = (uint16_t *)bootsector;
for (i = 8/2; i < SEC_SIZE/2; i++)
cfi_program_word(FB + i, p16[i]);
/* Erase the bootloader flash section. */
for (i = BOOTLOADER_ENTRYPOINT/SEC_SIZE; i < 0x200; i++)
rc = cfi_erase_sector(FB + (SEC_SIZE/2) * i);
pos = BOOTLOADER_ENTRYPOINT/2;
p16 = (uint16_t *)audiobuf;
for (i = 0; i < len/2; i++)
cfi_program_word(FB + pos + i, p16[i]);
/* Verify */
p8 = (char *)BOOTLOADER_ENTRYPOINT;
sum = MODEL_NUMBER;
for (i = 0; i < len; i++)
sum += p8[i];
if (sum != checksum)
{
rb->splash(HZ*3, "Verify failed!");
show_fatal_error();
return -5;
}
p8 = (char *)FB;
for (i = 0; i < 8; i++)
{
if (p8[i] != audiobuf[i])
{
rb->splash(HZ*3, "Bootvector corrupt!");
show_fatal_error();
return -6;
}
}
rb->splash(HZ*2, "Success");
return 0;
}
bool read_expr_impl(const char ** const ptr, char word[256], const char *delims) {
bool in_string = false, // "xxx xxx xx"
in_escape = false; // \n
int in_quote = 0; // 'x'
int level = 0;
char *word_ptr = word;
/* Is there a word left to get? */
// Skip whitespace at the start
*ptr = skip_whitespace (*ptr);
if (is_end_of_code_line (*ptr) || **ptr == ')') {
if (word)
*word = '\0';
return false;
}
while (**ptr != '\0' && !((mystrpbrk (*ptr, delims) == *ptr || is_end_of_code_line (*ptr))
&& !in_escape && !in_string && in_quote == 0 && level == 0)) {
if (!in_escape) {
switch( **ptr ) {
case '"':
if (in_quote == 0) in_string = !in_string;
break;
case '\'':
if (!in_string && in_quote == 0) in_quote = 3;
break;
case '\\':
in_escape = true;
break;
case '(':
if (!in_string && in_quote == 0) level++;
break;
case ')':
if (!in_string && in_quote == 0) level--;
if (level < 0) {
//(*ptr)--; //12/29/2010 stp not sure
goto finish_read_expr;
}
break;
default:
/* If this char wasn't ', redo the inside */
if (in_quote == 1) {
*ptr -= 2;
word_ptr -= 2;
}
}
if (in_quote) in_quote--;
} else {
in_escape = false;
}
if (word_ptr - word >= 254) {
show_fatal_error ("Expression is too long - must be 255 chars or less");
if (word)
strcpy (word, "0");
return true;
}
if (word)
*word_ptr++ = **ptr;
(*ptr)++;
}
finish_read_expr:
// Remove whitespace at the end
if (word) {
while (word_ptr > word && isspace((unsigned char) word_ptr[-1]))
*(--word_ptr) = '\0';
*word_ptr = '\0';
}
/* input is either the delimiter or null */
if (is_end_of_code_line (*ptr)) return true;
return true;
}
