mirror of
https://github.com/d0k3/GodMode9.git
synced 2025-06-26 21:52:48 +00:00
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
#include "cmd.h"
|
|
|
|
|
|
CmdHeader* BuildAllocCmdData(TitleMetaData* tmd) {
|
|
CmdHeader proto;
|
|
CmdHeader* cmd = NULL;
|
|
u32 content_count = getbe16(tmd->content_count);
|
|
u16 max_cnt_idx = 0;
|
|
|
|
// sanity check
|
|
if (!content_count)
|
|
return NULL;
|
|
|
|
// find max content id
|
|
TmdContentChunk* chunk = (TmdContentChunk*) (tmd + 1);
|
|
for (u32 i = 0; (i < content_count) && (i < TMD_MAX_CONTENTS); i++, chunk++)
|
|
if (getbe16(chunk->index) > max_cnt_idx) max_cnt_idx = getbe16(chunk->index);
|
|
|
|
// allocate memory for CMD / basic setup
|
|
proto.cmd_id = 1;
|
|
proto.n_entries = max_cnt_idx + 1;
|
|
proto.n_cmacs = content_count;
|
|
proto.unknown = 1;
|
|
memset(proto.cmac, 0x00, 0x10);
|
|
cmd = (CmdHeader*) malloc(CMD_SIZE(&proto));
|
|
if (!cmd) return NULL;
|
|
memset(cmd, 0x00, CMD_SIZE(&proto));
|
|
memcpy(cmd, &proto, sizeof(CmdHeader));
|
|
cmd->unknown = 0x0; // this means no CMACs, only valid for NAND
|
|
|
|
// copy content ids
|
|
u32* cnt_id = (u32*) (cmd + 1);
|
|
u32* cnt_id_2nd = cnt_id + cmd->n_entries;
|
|
chunk = (TmdContentChunk*) (tmd + 1);
|
|
memset(cnt_id, 0xFF, cmd->n_entries * sizeof(u32));
|
|
for (u32 i = 0; (i < content_count) && (i < TMD_MAX_CONTENTS); i++, chunk++) {
|
|
u32 chunk_id = getbe32(chunk->id);
|
|
cnt_id[getbe16(chunk->index)] = chunk_id;
|
|
*(cnt_id_2nd++) = chunk_id;
|
|
}
|
|
|
|
// bubble sort the second content id list
|
|
bool bs_finished = false;
|
|
cnt_id_2nd = cnt_id + cmd->n_entries;
|
|
while (!bs_finished) {
|
|
bs_finished = true;
|
|
for (u32 b = 1; b < cmd->n_cmacs; b++) {
|
|
if (cnt_id_2nd[b] < cnt_id_2nd[b-1]) {
|
|
u32 swp = cnt_id_2nd[b];
|
|
cnt_id_2nd[b] = cnt_id_2nd[b-1];
|
|
cnt_id_2nd[b-1] = swp;
|
|
bs_finished = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// set CMACs to 0x00
|
|
u8* cnt_cmac = (u8*) (cnt_id_2nd + cmd->n_cmacs);
|
|
memset(cnt_cmac, 0x00, 0x10 * cmd->n_entries);
|
|
|
|
// we still need to fix / set the CMACs inside the CMD file!
|
|
return cmd;
|
|
}
|