bool NDS2SF::make_mini2sf(const std::string& nds2sf_path, uint32_t address, size_t size, uint32_t num, std::map<std::string, std::string>& tags)
{
uint8_t exe[NDS2SF_EXE_HEADER_SIZE + 4];
// limit size
if (size > 4)
{
return false;
}
// make exe
put_2sf_exe_header(exe, address, (uint32_t)size);
mput4l(num, &exe[NDS2SF_EXE_HEADER_SIZE]);
// write mini2sf file
return exe2sf(nds2sf_path, exe, NDS2SF_EXE_HEADER_SIZE + size, tags);
}
void NDS2SF::put_2sf_exe_header(uint8_t *exe, uint32_t load_offset, uint32_t rom_size)
{
mput4l(load_offset, &exe[0]);
mput4l(rom_size, &exe[4]);
}
bool procyon_ripper::save_2sfs(const std::string & basename)
{
if (exe == NULL || driver_offset == 0 || bgm_play_function_offset == 0) {
return false;
}
// NOP mass attack
for (size_t i = 0; i < nopRegions.size(); i++) {
Region & region = nopRegions[i];
for (uint32_t offset = region.offset; offset < region.offset + region.size; offset += 4) {
mput4l(0xE1A00000, &arm9[offset]);
}
}
// install driver code:
// LDR R0, =0x1
// LDR R1, =0x0
// LDR R2, =0x100
// BL bgm_play
//
// infinite_loop:
// SWI #0x40000 ; IntrWait
// B infinite_loop
int32_t bl_bgm_play_rel = (bgm_play_function_offset / 4) - ((driver_offset + 12 + 8) / 4);
uint32_t bl_bgm_play_op = 0xEB000000 | (bl_bgm_play_rel & 0xffffff);
mput4l(0xE59F0010, &arm9[driver_offset]);
mput4l(0xE59F1010, &arm9[driver_offset + 4]);
mput4l(0xE59F2010, &arm9[driver_offset + 8]);
mput4l(bl_bgm_play_op, &arm9[driver_offset + 12]);
mput4l(0xEF040000, &arm9[driver_offset + 16]);
mput4l(0xEAFFFFFD, &arm9[driver_offset + 20]);
mput4l(0x00000001, &arm9[driver_offset + 24]);
mput4l(0x00000000, &arm9[driver_offset + 28]);
mput4l(0x00000100, &arm9[driver_offset + 32]);
// export 2sflib
std::string nds2sflib_path = basename + ".2sflib";
if (verbose) {
printf("Output \"%s\"\n", nds2sflib_path.c_str());
}
if (!NDS2SF::exe2sf(nds2sflib_path, exe, NDS2SF_EXE_HEADER_SIZE + rom_size)) {
fprintf(stderr, "Error: Unable to save 2sflib file.\n");
return false;
}
// get 2sflib filename for mini2sf tagging
char nds2sflib_filename[PATH_MAX];
strcpy(nds2sflib_filename, nds2sflib_path.c_str());
path_basename(nds2sflib_filename);
std::map<std::string, std::string> tags;
tags["_lib"] = nds2sflib_filename;
int mini2sf_count = 256;
uint32_t mini2sf_offset = arm9_rom_offset + driver_offset + 24;
for (int num = 0; num < mini2sf_count; num++) {
char mini2sf_path[PATH_MAX];
sprintf(mini2sf_path, "%s-%04d.mini2sf", basename.c_str(), num);
if (verbose) {
printf("Output \"%s\"\n", mini2sf_path);
}
NDS2SF::make_mini2sf(mini2sf_path, mini2sf_offset, 1, num, tags);
}
return true;
}
