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68dceb9859cd1d08acfef67beae5188cfa844e41
captain-amygdala.pistorm/config_file/config_file.c
beeanyew ce1c064e71 Add write-through cached RAM for Mac experiments
2021-06-22 13:13:13 +02:00

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// SPDX-License-Identifier: MIT
#include "platforms/platforms.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "rominfo.h"
#define M68K_CPU_TYPES M68K_CPU_TYPE_SCC68070
const char *cpu_types[M68K_CPU_TYPES] = {
"68000",
"68010",
"68EC020",
"68020",
"68EC030",
"68030",
"68EC040",
"68LC040",
"68040",
"SCC68070",
};
const char *map_type_names[MAPTYPE_NUM] = {
"NONE",
"rom",
"ram",
"register",
"ram_noalloc",
"wtcram",
};
const char *config_item_names[CONFITEM_NUM] = {
"NONE",
"cpu",
"map",
"loopcycles",
"mouse",
"keyboard",
"platform",
"setvar",
"kbfile",
};
const char *mapcmd_names[MAPCMD_NUM] = {
"NONE",
"type",
"address",
"size",
"range",
"file",
"ovl",
"id",
"autodump_file",
"autodump_mem",
};
int get_config_item_type(char *cmd) {
for (int i = 0; i < CONFITEM_NUM; i++) {
if (strcmp(cmd, config_item_names[i]) == 0) {
return i;
}
}
return CONFITEM_NONE;
}
unsigned int get_m68k_cpu_type(char *name) {
for (int i = 0; i < M68K_CPU_TYPES; i++) {
if (strcmp(name, cpu_types[i]) == 0) {
printf("[CFG] Set CPU type to %s.\n", cpu_types[i]);
return i + 1;
}
}
printf("[CFG] Invalid CPU type %s specified, defaulting to 68000.\n", name);
return M68K_CPU_TYPE_68000;
}
unsigned int get_map_cmd(char *name) {
for (int i = 1; i < MAPCMD_NUM; i++) {
if (strcmp(name, mapcmd_names[i]) == 0) {
return i;
}
}
return MAPCMD_UNKNOWN;
}
unsigned int get_map_type(char *name) {
for (int i = 1; i < MAPTYPE_NUM; i++) {
if (strcmp(name, map_type_names[i]) == 0) {
return i;
}
}
return MAPTYPE_NONE;
}
void trim_whitespace(char *str) {
while (strlen(str) != 0 && (str[strlen(str) - 1] == ' ' || str[strlen(str) - 1] == '\t' || str[strlen(str) - 1] == 0x0A || str[strlen(str) - 1] == 0x0D)) {
str[strlen(str) - 1] = '\0';
}
}
unsigned int get_int(char *str) {
if (strlen(str) == 0)
return -1;
int ret_int = 0;
if (strlen(str) > 2 && str[0] == '0' && str[1] == 'x') {
for (int i = 2; i < (int)strlen(str); i++) {
if (str[i] >= '0' && str[i] <= '9') {
ret_int = (str[i] - '0') | (ret_int << 4);
}
else {
switch(str[i]) {
case 'A': ret_int = 0xA | (ret_int << 4); break;
case 'B': ret_int = 0xB | (ret_int << 4); break;
case 'C': ret_int = 0xC | (ret_int << 4); break;
case 'D': ret_int = 0xD | (ret_int << 4); break;
case 'E': ret_int = 0xE | (ret_int << 4); break;
case 'F': ret_int = 0xF | (ret_int << 4); break;
case 'K': ret_int = ret_int * SIZE_KILO; break;
case 'M': ret_int = ret_int * SIZE_MEGA; break;
case 'G': ret_int = ret_int * SIZE_GIGA; break;
default:
printf("[CFG] Unknown character %c in hex value.\n", str[i]);
break;
}
}
}
return ret_int;
}
else {
ret_int = atoi(str);
if (str[strlen(str) - 1] == 'K')
ret_int = ret_int * SIZE_KILO;
else if (str[strlen(str) - 1] == 'M')
ret_int = ret_int * SIZE_MEGA;
else if (str[strlen(str) - 1] == 'G')
ret_int = ret_int * SIZE_GIGA;
return ret_int;
}
}
void get_next_string(char *str, char *str_out, int *strpos, char separator) {
int str_pos = 0, out_pos = 0, startquote = 0, endstring = 0;
if (!str_out)
return;
if (strpos)
str_pos = *strpos;
while ((str[str_pos] == ' ' || str[str_pos] == '\t') && str_pos < (int)strlen(str)) {
str_pos++;
}
if (str[str_pos] == '\"') {
str_pos++;
startquote = 1;
}
for (int i = str_pos; i < (int)strlen(str); i++) {
str_out[out_pos] = str[i];
if (startquote) {
if (str[i] == '\"')
endstring = 1;
} else {
if ((separator == ' ' && (str[i] == ' ' || str[i] == '\t')) || str[i] == separator) {
endstring = 1;
}
}
if (endstring) {
str_out[out_pos] = '\0';
if (strpos) {
*strpos = i + 1;
}
break;
}
out_pos++;
if (i + 1 == (int)strlen(str) && strpos) {
*strpos = i + 1;
str_out[out_pos] = '\0';
}
}
}
void add_mapping(struct emulator_config *cfg, unsigned int type, unsigned int addr, unsigned int size, int mirr_addr, char *filename, char *map_id, unsigned int autodump) {
unsigned int index = 0, file_size = 0;
FILE *in = NULL;
while (index < MAX_NUM_MAPPED_ITEMS) {
if (cfg->map_type[index] == MAPTYPE_NONE)
break;
index++;
}
if (index == MAX_NUM_MAPPED_ITEMS) {
printf("[CFG] Unable to map item, only %d items can be mapped with current binary.\n", MAX_NUM_MAPPED_ITEMS);
return;
}
cfg->map_type[index] = type;
cfg->map_offset[index] = addr;
cfg->map_size[index] = size;
cfg->map_high[index] = addr + size;
cfg->map_mirror[index] = mirr_addr;
if (strlen(map_id)) {
if (cfg->map_id[index]) {
free(cfg->map_id[index]);
}
cfg->map_id[index] = (char *)malloc(strlen(map_id) + 1);
strcpy(cfg->map_id[index], map_id);
}
switch(type) {
case MAPTYPE_RAM_NOALLOC:
printf("[CFG] Adding %d byte (%d MB) RAM mapping %s...\n", size, size / 1024 / 1024, map_id);
cfg->map_data[index] = (unsigned char *)filename;
break;
case MAPTYPE_RAM_WTC:
printf("[CFG] Allocating %d bytes for Write-Through Cached RAM mapping (%.1f MB)...\n", size, (float)size / 1024.0f / 1024.0f);
goto alloc_mapram;
break;
case MAPTYPE_RAM:
printf("[CFG] Allocating %d bytes for RAM mapping (%d MB)...\n", size, size / 1024 / 1024);
alloc_mapram:
cfg->map_data[index] = (unsigned char *)malloc(size);
if (!cfg->map_data[index]) {
printf("[CFG] ERROR: Unable to allocate memory for mapped RAM!\n");
goto mapping_failed;
}
memset(cfg->map_data[index], 0x00, size);
if (type == MAPTYPE_RAM_WTC) {
// This may look a bit weird, but it adds a read range for the WTC RAM. Writes still go through to the mapped read/write functions.
m68k_add_rom_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
}
break;
case MAPTYPE_ROM:
in = fopen(filename, "rb");
if (!in) {
if (!autodump) {
printf("[CFG] Failed to open file %s for ROM mapping. Using onboard ROM instead, if available.\n", filename);
goto mapping_failed;
} else if (autodump == MAPCMD_AUTODUMP_FILE) {
printf("[CFG] Could not open file %s for ROM mapping. Autodump flag is set, dumping to file.\n", filename);
dump_range_to_file(cfg->map_offset[index], cfg->map_size[index], filename);
in = fopen(filename, "rb");
if (in == NULL) {
printf("[CFG] Could not open dumped file for reading. Using onboard ROM instead, if available.\n");
goto mapping_failed;
}
} else if (autodump == MAPCMD_AUTODUMP_MEM) {
printf("[CFG] Could not open file %s for ROM mapping. Autodump flag is set, dumping to memory.\n", filename);
cfg->map_data[index] = dump_range_to_memory(cfg->map_offset[index], cfg->map_size[index]);
cfg->rom_size[index] = cfg->map_size[index];
if (cfg->map_data[index] == NULL) {
printf("[CFG] Could not dump range to memory. Using onboard ROM instead, if available.\n");
goto mapping_failed;
}
goto skip_file_ops;
}
}
fseek(in, 0, SEEK_END);
file_size = (int)ftell(in);
if (size == 0) {
cfg->map_size[index] = file_size;
cfg->map_high[index] = addr + cfg->map_size[index];
}
fseek(in, 0, SEEK_SET);
cfg->map_data[index] = (unsigned char *)calloc(1, cfg->map_size[index]);
cfg->rom_size[index] = (cfg->map_size[index] <= file_size) ? cfg->map_size[index] : file_size;
if (!cfg->map_data[index]) {
printf("[CFG] ERROR: Unable to allocate memory for mapped ROM!\n");
goto mapping_failed;
}
memset(cfg->map_data[index], 0x00, cfg->map_size[index]);
fread(cfg->map_data[index], cfg->rom_size[index], 1, in);
if (in)
fclose(in);
skip_file_ops:
displayRomInfo(cfg->map_data[index], cfg->rom_size[index]);
if (cfg->map_size[index] == cfg->rom_size[index])
m68k_add_rom_range(cfg->map_offset[index], cfg->map_high[index], cfg->map_data[index]);
break;
case MAPTYPE_REGISTER:
default:
break;
}
printf("[CFG] [MAP %d] Added %s mapping for range %.8lX-%.8lX ID: %s\n", index, map_type_names[type], cfg->map_offset[index], cfg->map_high[index] - 1, cfg->map_id[index] ? cfg->map_id[index] : "None");
return;
mapping_failed:;
cfg->map_type[index] = MAPTYPE_NONE;
if (in)
fclose(in);
}
void free_config_file(struct emulator_config *cfg) {
if (!cfg) {
printf("[CFG] Tried to free NULL config, aborting.\n");
}
if (cfg->platform) {
cfg->platform->shutdown(cfg);
free(cfg->platform);
cfg->platform = NULL;
}
for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
if (cfg->map_data[i]) {
if (cfg->map_type[i] != MAPTYPE_RAM_NOALLOC) {
free(cfg->map_data[i]);
}
cfg->map_data[i] = NULL;
}
if (cfg->map_id[i]) {
free(cfg->map_id[i]);
cfg->map_id[i] = NULL;
}
}
if (cfg->mouse_file) {
free(cfg->mouse_file);
cfg->mouse_file = NULL;
}
if (cfg->keyboard_file) {
free(cfg->keyboard_file);
cfg->keyboard_file = NULL;
}
m68k_clear_ranges();
printf("[CFG] Config file freed. Maybe.\n");
}
struct emulator_config *load_config_file(char *filename) {
FILE *in = fopen(filename, "rb");
if (in == NULL) {
printf("[CFG] Failed to open config file %s for reading.\n", filename);
return NULL;
}
char *parse_line = NULL;
char cur_cmd[128];
struct emulator_config *cfg = NULL;
int cur_line = 1;
parse_line = (char *)calloc(1, 512);
if (!parse_line) {
printf("[CFG] Failed to allocate memory for config file line buffer.\n");
return NULL;
}
cfg = (struct emulator_config *)calloc(1, sizeof(struct emulator_config));
if (!cfg) {
printf("[CFG] Failed to allocate memory for temporary emulator config.\n");
goto load_failed;
}
memset(cfg, 0x00, sizeof(struct emulator_config));
cfg->cpu_type = M68K_CPU_TYPE_68000;
while (!feof(in)) {
int str_pos = 0;
memset(parse_line, 0x00, 512);
fgets(parse_line, 512, in);
if (strlen(parse_line) <= 2 || parse_line[0] == '#' || parse_line[0] == '/')
goto skip_line;
trim_whitespace(parse_line);
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
switch (get_config_item_type(cur_cmd)) {
case CONFITEM_CPUTYPE:
cfg->cpu_type = get_m68k_cpu_type(parse_line + str_pos);
break;
case CONFITEM_MAP: {
unsigned int maptype = 0, mapsize = 0, mapaddr = 0, autodump = 0;
unsigned int mirraddr = ((unsigned int)-1);
char mapfile[128], mapid[128];
memset(mapfile, 0x00, 128);
memset(mapid, 0x00, 128);
while (str_pos < (int)strlen(parse_line)) {
get_next_string(parse_line, cur_cmd, &str_pos, '=');
switch(get_map_cmd(cur_cmd)) {
case MAPCMD_TYPE:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
maptype = get_map_type(cur_cmd);
//printf("Type! %s\n", map_type_names[maptype]);
break;
case MAPCMD_ADDRESS:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
mapaddr = get_int(cur_cmd);
//printf("Address! %.8X\n", mapaddr);
break;
case MAPCMD_SIZE:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
mapsize = get_int(cur_cmd);
//printf("Size! %.8X\n", mapsize);
break;
case MAPCMD_RANGE:
get_next_string(parse_line, cur_cmd, &str_pos, '-');
mapaddr = get_int(cur_cmd);
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
mapsize = get_int(cur_cmd) - 1 - mapaddr;
//printf("Range! %d-%d\n", mapaddr, mapaddr + mapsize);
break;
case MAPCMD_FILENAME:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
strcpy(mapfile, cur_cmd);
//printf("File! %s\n", mapfile);
break;
case MAPCMD_MAP_ID:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
strcpy(mapid, cur_cmd);
//printf("File! %s\n", mapfile);
break;
case MAPCMD_OVL_REMAP:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
mirraddr = get_int(cur_cmd);
break;
case MAPCMD_AUTODUMP_FILE:
case MAPCMD_AUTODUMP_MEM:
autodump = get_map_cmd(cur_cmd);
break;
default:
printf("[CFG] Unknown/unhandled map argument %s on line %d.\n", cur_cmd, cur_line);
break;
}
}
add_mapping(cfg, maptype, mapaddr, mapsize, mirraddr, mapfile, mapid, autodump);
break;
}
case CONFITEM_LOOPCYCLES:
cfg->loop_cycles = get_int(parse_line + str_pos);
printf("[CFG] Set CPU loop cycles to %d.\n", cfg->loop_cycles);
break;
case CONFITEM_MOUSE:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
cfg->mouse_file = (char *)calloc(1, strlen(cur_cmd) + 1);
strcpy(cfg->mouse_file, cur_cmd);
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
cfg->mouse_toggle_key = cur_cmd[0];
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
cfg->mouse_autoconnect = (strcmp(cur_cmd, "autoconnect") == 0) ? 1 : 0;
cfg->mouse_enabled = 1;
printf("[CFG] Enabled mouse event forwarding from file %s, toggle key %c.\n", cfg->mouse_file, cfg->mouse_toggle_key);
break;
case CONFITEM_KEYBOARD:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
cfg->keyboard_toggle_key = cur_cmd[0];
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
cfg->keyboard_grab = (strcmp(cur_cmd, "grab") == 0) ? 1 : 0;
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
cfg->keyboard_autoconnect = (strcmp(cur_cmd, "autoconnect") == 0) ? 1 : 0;
printf("[CFG] Enabled keyboard event forwarding, toggle key %c", cfg->keyboard_toggle_key);
if (cfg->keyboard_grab)
printf(", locking from host when connected");
if (cfg->keyboard_autoconnect)
printf(", connected to guest at startup");
printf(".\n");
break;
case CONFITEM_KBFILE:
get_next_string(parse_line, cur_cmd, &str_pos, ' ');
cfg->keyboard_file = (char *)calloc(1, strlen(cur_cmd) + 1);
strcpy(cfg->keyboard_file, cur_cmd);
printf("[CFG] Set keyboard event source file to %s.\n", cfg->keyboard_file);
break;
case CONFITEM_PLATFORM: {
char platform_name[128], platform_sub[128];
memset(platform_name, 0x00, 128);
memset(platform_sub, 0x00, 128);
get_next_string(parse_line, platform_name, &str_pos, ' ');
printf("[CFG] Setting platform to %s", platform_name);
get_next_string(parse_line, platform_sub, &str_pos, ' ');
if (strlen(platform_sub))
printf(" (sub: %s)", platform_sub);
printf("\n");
cfg->platform = make_platform_config(platform_name, platform_sub);
break;
}
case CONFITEM_SETVAR: {
if (!cfg->platform) {
printf("[CFG] Warning: setvar used in config file with no platform specified.\n");
break;
}
char var_name[128], var_value[128];
memset(var_name, 0x00, 128);
memset(var_value, 0x00, 128);
get_next_string(parse_line, var_name, &str_pos, ' ');
get_next_string(parse_line, var_value, &str_pos, ' ');
cfg->platform->setvar(cfg, var_name, var_value);
break;
}
case CONFITEM_NONE:
default:
printf("[CFG] Unknown config item %s on line %d.\n", cur_cmd, cur_line);
break;
}
skip_line:
cur_line++;
}
goto load_successful;
load_failed:;
if (cfg) {
for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
if (cfg->map_data[i])
free(cfg->map_data[i]);
cfg->map_data[i] = NULL;
}
free(cfg);
cfg = NULL;
}
load_successful:;
if (parse_line)
free(parse_line);
return cfg;
}
int get_named_mapped_item(struct emulator_config *cfg, char *name) {
if (strlen(name) == 0)
return -1;
for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
if (cfg->map_type[i] == MAPTYPE_NONE || !cfg->map_id[i])
continue;
if (strcmp(name, cfg->map_id[i]) == 0)
return i;
}
return -1;
}
int get_mapped_item_by_address(struct emulator_config *cfg, uint32_t address) {
for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
if (cfg->map_type[i] == MAPTYPE_NONE || !cfg->map_data[i])
continue;
else if (address >= cfg->map_offset[i] && address < cfg->map_high[i]) {
if (cfg->map_type[i] == MAPTYPE_RAM || cfg->map_type[i] == MAPTYPE_RAM_NOALLOC || cfg->map_type[i] == MAPTYPE_ROM)
return i;
}
}
return -1;
}
uint8_t *get_mapped_data_pointer_by_address(struct emulator_config *cfg, uint32_t address) {
for (int i = 0; i < MAX_NUM_MAPPED_ITEMS; i++) {
if (cfg->map_type[i] == MAPTYPE_NONE || !cfg->map_data[i])
continue;
else if (address >= cfg->map_offset[i] && address < cfg->map_high[i]) {
if (cfg->map_type[i] == MAPTYPE_RAM || cfg->map_type[i] == MAPTYPE_RAM_NOALLOC || cfg->map_type[i] == MAPTYPE_ROM)
return cfg->map_data[i] + (address - cfg->map_offset[i]);
}
}
return NULL;
}
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