56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
typedef struct {
|
|
char pad[20];
|
|
} CARDFileInfo;
|
|
typedef struct {
|
|
int slot;
|
|
} TCardManager;
|
|
|
|
/** For NTSC-J 1.0:
|
|
*
|
|
* mount_ 80107b50
|
|
* open_ 801072f4
|
|
* CARDOpen 800a3cac
|
|
* CARDRead 800a4640
|
|
* CARDClose 800a3e24
|
|
*
|
|
* onReadOptionBlock 801069f4
|
|
*/
|
|
|
|
typedef int bool;
|
|
int mount_(TCardManager *this, bool);
|
|
int open_(TCardManager *this, CARDFileInfo*);
|
|
int CARDOpen(int slot, const char *fileName, CARDFileInfo*);
|
|
int CARDRead(CARDFileInfo *fileInfo, void *buf, unsigned long size, unsigned long offset);
|
|
int CARDClose(CARDFileInfo *fileInfo);
|
|
|
|
#define fileName "gct"
|
|
#define dst ((void*)0x817F0000)
|
|
#define size 0xE000 // 7 blocks
|
|
int onReadOptionBlock(TCardManager *this, CARDFileInfo *fileInfo) {
|
|
int rc;
|
|
// mount
|
|
if ((rc = mount_(this, 1))) goto orig;
|
|
|
|
// open file
|
|
if ((rc = CARDOpen(this->slot, fileName, fileInfo))) {
|
|
// TODO error handling
|
|
// if (rc == -4) // file not exists
|
|
goto orig;
|
|
}
|
|
|
|
// read file to memory
|
|
if ((rc = CARDRead(fileInfo, dst, size, 0))) {
|
|
// should not fail if (dst, size) is properly set
|
|
} else {
|
|
// everything is good => apply gecko code
|
|
// TODO entry
|
|
((void(*)())0x817f4000)();
|
|
}
|
|
|
|
// close file
|
|
CARDClose(fileInfo);
|
|
|
|
orig:
|
|
// original function call
|
|
return open_(this, fileInfo);
|
|
}
|