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Fixes #47 - Add a --memory argument to easily add file based memory regions

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This commit is contained in:
Stefan Arentz 2016-11-29 21:08:56 -05:00
parent 428599d877
commit 5a445f1d9b
1 changed files with 72 additions and 0 deletions
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72
ewm.c
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@ -80,6 +80,44 @@ struct ewm_machine_t {
ewm_machine_setup_f setup;
};
#define EWM_MEMORY_TYPE_RAM 0
#define EWM_MEMORY_TYPE_ROM 1
struct ewm_memory_t {
int type;
char *path;
uint16_t address;
struct ewm_memory_t *next;
};
struct ewm_memory_t *parse_memory(char *s) {
char *type = strsep(&s, ":");
if (type == NULL) { // || (strcmp(type, "ram") && strcmp(type, "rom"))) {
printf("type fail\n");
return NULL;
}
char *address = strsep(&s, ":");
if (address == NULL) {
printf("address fail\n");
return NULL;
}
char *path = strsep(&s, ":");
if (path == NULL) {
printf("path fail\n");
return NULL;
}
struct ewm_memory_t *m = (struct ewm_memory_t*) malloc(sizeof(struct ewm_memory_t));
m->type = strcmp(type, "ram") ? EWM_MEMORY_TYPE_RAM : EWM_MEMORY_TYPE_ROM;
m->path = path;
m->address = atoi(address);
m->next = NULL;
return m;
}
static struct ewm_machine_t machines[] = {
{ "apple1", "Apple 1", false, setup_apple1 },
{ "replica1", "Replica 1", false, setup_replica1 },
@ -91,6 +129,7 @@ static struct option options[] = {
{ "machine", required_argument, NULL, 'm' },
{ "strict", no_argument, NULL, 's' },
{ "trace", optional_argument, NULL, 't' },
{ "memory", required_argument, NULL, 'x' },
{ NULL, 0, NULL, 0 }
};
@ -107,6 +146,7 @@ int main(int argc, char **argv) {
struct ewm_machine_t *machine = &machines[0];
bool strict = false;
char *trace_path = NULL;
struct ewm_memory_t *memory;
char ch;
while ((ch = getopt_long(argc, argv, "m:", options, NULL)) != -1) {
@ -120,6 +160,18 @@ int main(int argc, char **argv) {
case 't':
trace_path = optarg ? optarg : "/dev/stderr";
break;
case 'x': {
struct ewm_memory_t *m = parse_memory(optarg);
if (m == NULL) {
exit(1);
}
if (memory == NULL) {
memory = m;
} else {
memory->next = m;
}
break;
}
}
}
@ -133,9 +185,29 @@ int main(int argc, char **argv) {
cpu_setup();
fprintf(stderr, "[EWM] Starting up %s\n", machine->description);
struct cpu_t cpu;
machine->setup(&cpu);
struct ewm_memory_t *m = memory;
while (m != NULL) {
fprintf(stderr, "[EWM] Adding %s $%.4X %s\n", m->type == EWM_MEMORY_TYPE_RAM ? "RAM" : "ROM", m->address, m->path);
if (m->type == EWM_MEMORY_TYPE_RAM) {
if (cpu_add_ram_file(&cpu, m->address, m->path) == NULL) {
fprintf(stderr, "[EWM] Failed to add RAM from %s\n", m->path);
exit(1);
}
} else {
if (cpu_add_rom_file(&cpu, m->address, m->path) == NULL) {
fprintf(stderr, "[EWM] Failed to add ROM from %s\n", m->path);
exit(1);
}
}
m = m->next;
}
cpu_strict(&cpu, strict);
cpu_trace(&cpu, trace_path);