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Make assembler output file optional; sanity checks; bugfixes.

master
Ben Kurtovic pirms 9 gadiem
vecāks
revīzija
5d426648bd
5 mainītis faili ar 69 papildinājumiem un 13 dzēšanām
  1. +6
    -3
      README.md
  2. +1
    -1
      crater.c
  3. +57
    -9
      src/config.c
  4. +1
    -0
      src/config.h
  5. +4
    -0
      src/rom.c

+ 6
- 3
README.md Parādīt failu

@@ -52,6 +52,9 @@ detailed information about emulation state while running, including register
values and memory contents. You can also pause emulation to set breakpoints and
change state.

`--assemble <input> <output>` (`-a`) converts z80 assembly source code into a
`.gg` binary that can be run by crater. `--disassemble <input> <output>` (`-d`)
executes the opposite operation.
`--assemble <input> [<output>]` (`-a`) converts z80 assembly source code into a
`.gg` binary that can be run by crater. `--disassemble <input> [<output>]`
(`-d`) executes the opposite operation. If no output file is given, crater will
use the name of the input file, with the extension replaced with `.gg` for `-a`
and `.s` for `-d`. By default, this will never overwrite the original filename;
pass `--overwrite` (`-r`) to let crater do so.

+ 1
- 1
crater.c Parādīt failu

@@ -24,7 +24,7 @@ int main(int argc, char *argv[])
#endif

if (config->assemble) {
printf("Running assembler: %s -> %s.\n",config->src_path, config->dst_path);
printf("Running assembler: %s -> %s.\n", config->src_path, config->dst_path);
} else if (config->disassemble) {
printf("Running disassembler: %s -> %s.\n", config->src_path, config->dst_path);
} else {


+ 57
- 9
src/config.c Parādīt failu

@@ -34,9 +34,12 @@ static void print_help(const char *arg1)
" -g, --debug display information about emulation state while running,\n"
" including register and memory values; can also pause\n"
" emulation, set breakpoints, and change state\n"
" -a, --assemble <in> <out> convert z80 assembly source code into a\n"
" binary file that can be run by crater\n"
" -d, --disassemble <in> <out> convert a binary file into z80 assembly code\n",
" -a, --assemble <in> [<out>] convert z80 assembly source code into a\n"
" binary file that can be run by crater\n"
" -d, --disassemble <in> [<out>] convert a binary file into z80 assembly\n"
" source code\n"
" -r, --overwrite allow crater to write assembler output to the same\n"
" filename as the input\n",
arg1);
}

@@ -160,6 +163,8 @@ static int parse_args(Config *config, int argc, char *argv[])
}

path = malloc(sizeof(char) * (strlen(arg) + 1));
if (!path)
OUT_OF_MEMORY()
strcpy(path, arg);

if (paths_read == 1) {
@@ -220,6 +225,8 @@ static int parse_args(Config *config, int argc, char *argv[])
config->rom_path = NULL;
}
config->disassemble = true;
} else if (!strcmp(arg, "r") || !strcmp(arg, "overwrite")) {
config->overwrite = true;
} else {
ERROR("unknown argument: %s", argv[i])
return CONFIG_EXIT_FAILURE;
@@ -243,30 +250,69 @@ static int parse_args(Config *config, int argc, char *argv[])
}

/*
If no output file is specified for the assembler, this function picks a
filename based on the input file, replacing its extension with '.gg' or
'.s' (or adding it, if none is present).
*/
static void guess_assembler_output_file(Config* config)
{
char *src = config->src_path, *ptr = src + strlen(src) - 1,
*ext = config->assemble ? ".gg" : ".s";
size_t until_ext = ptr - src + 1;

do {
if (*ptr == '.') {
until_ext = ptr - src;
break;
}
} while (ptr-- >= src);

config->dst_path = malloc(sizeof(char) * (until_ext + 4));
if (!config->dst_path)
OUT_OF_MEMORY()
strcpy(stpncpy(config->dst_path, src, until_ext), ext);
}

/*
Ensure that the combination of arguments in a config object are valid.

Some modifications are made in the case of missing arguments, like guessing
the filenames for assembler output files.
*/
bool sanity_check(Config* config)
static bool sanity_check(Config* config)
{
bool assembler = config->assemble || config->disassemble;

if (config->fullscreen && config->scale > 1) {
ERROR("cannot specify a scale in fullscreen mode")
return false;
} else if (config->assemble && config->disassemble) {
ERROR("cannot assemble and disassemble at the same time")
return false;
} else if ((config->assemble || config->disassemble) &&
(config->debug || config->fullscreen || config->scale > 1)) {
} else if (assembler && (config->debug || config->fullscreen || config->scale > 1)) {
ERROR("cannot specify emulator options in assembler mode")
return false;
} else if ((config->assemble || config->disassemble) &&
!(config->src_path && config->dst_path)) {
ERROR("assembler mode requires both an input and an output file")
} else if (assembler && !config->src_path) {
ERROR("assembler mode requires an input file")
return false;
}

if (assembler && !config->dst_path) {
guess_assembler_output_file(config);
}
if (assembler && !config->overwrite && !strcmp(config->src_path, config->dst_path)) {
ERROR("refusing to overwrite the assembler input file; pass -r to override")
return false;
}

return true;
}

/*
Create a new config object and load default values into it.

Return value is one of CONFIG_OK, CONFIG_EXIT_SUCCESS, CONFIG_EXIT_FAILURE
and indicates how the caller should proceed.
*/
int config_create(Config** config_ptr, int argc, char* argv[])
{
@@ -286,6 +332,7 @@ int config_create(Config** config_ptr, int argc, char* argv[])
config->rom_path = NULL;
config->src_path = NULL;
config->dst_path = NULL;
config->overwrite = false;

retval = parse_args(config, argc, argv);
if (retval == CONFIG_OK && !sanity_check(config))
@@ -337,5 +384,6 @@ void config_dump_args(Config* config)
DEBUG("- dst_path: %s", config->dst_path)
else
DEBUG("- dst_path: (null)")
DEBUG("- overwrite: %s", config->overwrite ? "true" : "false")
}
#endif

+ 1
- 0
src/config.h Parādīt failu

@@ -26,6 +26,7 @@ typedef struct {
char *rom_path;
char *src_path;
char *dst_path;
bool overwrite;
} Config;

/* Functions */


+ 4
- 0
src/rom.c Parādīt failu

@@ -38,6 +38,10 @@ ROM* rom_open(const char *path)
return NULL;
}
rom->name = malloc(sizeof(char) * (strlen(path) + 1));
if (!rom->name) {
fclose(fp);
return NULL;
}
strcpy(rom->name, path);

// TODO: load data from file into a buffer


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