mirror of
https://github.com/zeldaret/oot.git
synced 2024-12-29 16:26:18 +00:00
342 lines
7.8 KiB
C
342 lines
7.8 KiB
C
#include <assert.h>
|
|
#include <ctype.h>
|
|
#include <stdarg.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "n64chksum.h"
|
|
#include "util.h"
|
|
|
|
#define ROM_SIZE 0x02000000
|
|
|
|
enum InputObjType
|
|
{
|
|
OBJ_NULL,
|
|
OBJ_FILE,
|
|
OBJ_TABLE,
|
|
};
|
|
|
|
struct InputFile
|
|
{
|
|
enum InputObjType type;
|
|
const char *name;
|
|
uint8_t *data;
|
|
size_t size;
|
|
unsigned int valign;
|
|
|
|
uint32_t virtStart;
|
|
uint32_t virtEnd;
|
|
uint32_t physStart;
|
|
uint32_t physEnd;
|
|
};
|
|
|
|
static struct InputFile *g_inputFiles = NULL;
|
|
static int g_inputFilesCount = 0;
|
|
|
|
static unsigned int round_up(unsigned int num, unsigned int multiple)
|
|
{
|
|
num += multiple - 1;
|
|
return num / multiple * multiple;
|
|
}
|
|
|
|
static bool is_yaz0_header(const uint8_t *data)
|
|
{
|
|
return data[0] == 'Y'
|
|
&& data[1] == 'a'
|
|
&& data[2] == 'z'
|
|
&& data[3] == '0';
|
|
}
|
|
|
|
static void compute_offsets(void)
|
|
{
|
|
size_t physOffset = 0;
|
|
size_t virtOffset = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < g_inputFilesCount; i++)
|
|
{
|
|
bool compressed = false;
|
|
|
|
if (g_inputFiles[i].type == OBJ_FILE)
|
|
{
|
|
if (is_yaz0_header(g_inputFiles[i].data))
|
|
compressed = true;
|
|
}
|
|
else if (g_inputFiles[i].type == OBJ_TABLE)
|
|
{
|
|
g_inputFiles[i].size = g_inputFilesCount * 16;
|
|
}
|
|
|
|
virtOffset = round_up(virtOffset, g_inputFiles[i].valign);
|
|
|
|
if (g_inputFiles[i].type == OBJ_NULL)
|
|
{
|
|
g_inputFiles[i].virtStart = 0;
|
|
g_inputFiles[i].virtEnd = 0;
|
|
g_inputFiles[i].physStart = 0;
|
|
g_inputFiles[i].physEnd = 0;
|
|
}
|
|
else if (compressed)
|
|
{
|
|
size_t compSize = round_up(g_inputFiles[i].size, 16);
|
|
size_t uncompSize = util_read_uint32_be(g_inputFiles[i].data + 4);
|
|
|
|
g_inputFiles[i].virtStart = virtOffset;
|
|
g_inputFiles[i].virtEnd = virtOffset + uncompSize;
|
|
g_inputFiles[i].physStart = physOffset;
|
|
g_inputFiles[i].physEnd = physOffset + compSize;
|
|
|
|
physOffset += compSize;
|
|
virtOffset += uncompSize;
|
|
}
|
|
else
|
|
{
|
|
size_t size = g_inputFiles[i].size;
|
|
|
|
g_inputFiles[i].virtStart = virtOffset;
|
|
g_inputFiles[i].virtEnd = virtOffset + size;
|
|
g_inputFiles[i].physStart = physOffset;
|
|
g_inputFiles[i].physEnd = 0;
|
|
|
|
physOffset += size;
|
|
virtOffset += size;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void build_rom(const char *filename)
|
|
{
|
|
uint8_t *romData = calloc(ROM_SIZE, 1);
|
|
size_t pos = 0;
|
|
int i;
|
|
int j;
|
|
uint32_t chksum[2];
|
|
FILE *outFile;
|
|
|
|
for (i = 0; i < g_inputFilesCount; i++)
|
|
{
|
|
size_t size = g_inputFiles[i].size;
|
|
|
|
if (pos + round_up(size, 16) > ROM_SIZE)
|
|
util_fatal_error("size exceeds max ROM size of 32 KiB");
|
|
|
|
assert(pos % 16 == 0);
|
|
|
|
switch (g_inputFiles[i].type)
|
|
{
|
|
case OBJ_FILE:
|
|
// write file data
|
|
memcpy(romData + pos, g_inputFiles[i].data, size);
|
|
pos += round_up(size, 16);
|
|
|
|
free(g_inputFiles[i].data);
|
|
break;
|
|
case OBJ_TABLE:
|
|
for (j = 0; j < g_inputFilesCount; j++)
|
|
{
|
|
util_write_uint32_be(romData + pos + 0, g_inputFiles[j].virtStart);
|
|
util_write_uint32_be(romData + pos + 4, g_inputFiles[j].virtEnd);
|
|
util_write_uint32_be(romData + pos + 8, g_inputFiles[j].physStart);
|
|
util_write_uint32_be(romData + pos + 12, g_inputFiles[j].physEnd);
|
|
|
|
pos += 16;
|
|
}
|
|
break;
|
|
case OBJ_NULL:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Pad the rest of the ROM
|
|
while (pos < ROM_SIZE)
|
|
{
|
|
// This is such a weird thing to pad with. Whatever, Nintendo.
|
|
romData[pos] = pos & 0xFF;
|
|
pos++;
|
|
}
|
|
|
|
// calculate checksum
|
|
n64chksum_calculate(romData, 6105, chksum);
|
|
util_write_uint32_be(romData + 0x10, chksum[0]);
|
|
util_write_uint32_be(romData + 0x14, chksum[1]);
|
|
|
|
// write file
|
|
outFile = fopen(filename, "wb");
|
|
if (outFile == NULL)
|
|
util_fatal_error("failed to open file '%s' for writing", filename);
|
|
fwrite(romData, ROM_SIZE, 1, outFile);
|
|
fclose(outFile);
|
|
|
|
free(romData);
|
|
}
|
|
|
|
static struct InputFile *new_file(void)
|
|
{
|
|
int index = g_inputFilesCount;
|
|
|
|
g_inputFilesCount++;
|
|
g_inputFiles = realloc(g_inputFiles, g_inputFilesCount * sizeof(*g_inputFiles));
|
|
|
|
g_inputFiles[index].valign = 1;
|
|
|
|
return &g_inputFiles[index];
|
|
}
|
|
|
|
// null terminates the current token and returns a pointer to the next token
|
|
static char *token_split(char *str)
|
|
{
|
|
while (!isspace(*str))
|
|
{
|
|
if (*str == 0)
|
|
return str; // end of string
|
|
str++;
|
|
}
|
|
*str = 0; // terminate token
|
|
str++;
|
|
|
|
// skip remaining whitespace
|
|
while (isspace(*str))
|
|
str++;
|
|
return str;
|
|
}
|
|
|
|
// null terminates the current line and returns a pointer to the next line
|
|
static char *line_split(char *str)
|
|
{
|
|
while (*str != '\n')
|
|
{
|
|
if (*str == 0)
|
|
return str; // end of string
|
|
str++;
|
|
}
|
|
*str = 0; // terminate line
|
|
return str + 1;
|
|
}
|
|
|
|
static void parse_line(char *line, int lineNum)
|
|
{
|
|
char *token = line;
|
|
int i = 0;
|
|
|
|
char *filename = NULL;
|
|
enum InputObjType type = -1;
|
|
int valign = 1;
|
|
struct InputFile *file;
|
|
|
|
// iterate through each token
|
|
while (token[0] != 0)
|
|
{
|
|
char *nextToken = token_split(token);
|
|
|
|
if (token[0] == '#') // comment - ignore rest of line
|
|
return;
|
|
|
|
switch (i)
|
|
{
|
|
case 0:
|
|
if (strcmp(token, "file") == 0)
|
|
type = OBJ_FILE;
|
|
else if (strcmp(token, "filetable") == 0)
|
|
type = OBJ_TABLE;
|
|
else if (strcmp(token, "null") == 0)
|
|
type = OBJ_NULL;
|
|
else
|
|
util_fatal_error("unknown object type '%s' on line %i", token, lineNum);
|
|
break;
|
|
case 1:
|
|
filename = token;
|
|
break;
|
|
case 2:
|
|
{
|
|
int n;
|
|
|
|
if (sscanf(token, "align(%i)", &n) == 1)
|
|
valign = n;
|
|
else
|
|
goto junk;
|
|
}
|
|
break;
|
|
default:
|
|
junk:
|
|
util_fatal_error("junk '%s' on line %i", token, lineNum);
|
|
break;
|
|
}
|
|
|
|
token = nextToken;
|
|
i++;
|
|
}
|
|
|
|
if (i == 0) // empty line
|
|
return;
|
|
|
|
file = new_file();
|
|
file->valign = valign;
|
|
|
|
switch (type)
|
|
{
|
|
case OBJ_FILE:
|
|
if (filename == NULL)
|
|
util_fatal_error("no filename specified on line %i", lineNum);
|
|
file->type = OBJ_FILE;
|
|
file->data = util_read_whole_file(filename, &file->size);
|
|
break;
|
|
case OBJ_TABLE:
|
|
file->type = OBJ_TABLE;
|
|
break;
|
|
case OBJ_NULL:
|
|
file->type = OBJ_NULL;
|
|
file->size = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void parse_list(char *list)
|
|
{
|
|
char *line = list;
|
|
int lineNum = 1;
|
|
|
|
// iterate through each line
|
|
while (line[0] != 0)
|
|
{
|
|
char *nextLine = line_split(line);
|
|
|
|
parse_line(line, lineNum);
|
|
|
|
line = nextLine;
|
|
lineNum++;
|
|
}
|
|
}
|
|
|
|
static void usage(const char *execName)
|
|
{
|
|
printf("usage: %s FILE_LIST OUTPUT_FILE\n"
|
|
"where FILE_LIST is a list of files to include\n"
|
|
"and OUTPUT_FILE is the name of the output ROM\n"
|
|
"note that 'dmadata' refers to the file list itself and not an external file\n",
|
|
execName);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
char *list;
|
|
|
|
if (argc != 3)
|
|
{
|
|
puts("invalid args");
|
|
usage(argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
list = util_read_whole_file(argv[1], NULL);
|
|
|
|
parse_list(list);
|
|
compute_offsets();
|
|
build_rom(argv[2]);
|
|
|
|
free(list);
|
|
|
|
return 0;
|
|
}
|