57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
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typedef struct {
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char pad[20];
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} CARDFileInfo;
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typedef struct {
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int slot;
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} TCardManager;
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/** For NTSC-J 1.0:
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*
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* mount_ 80107b50
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* open_ 801072f4
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* CARDOpen 800a3cac
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* CARDRead 800a4640
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* CARDClose 800a3e24
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*
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* onReadOptionBlock 801069f4
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*/
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typedef int bool;
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int mount_(TCardManager *this, bool);
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int open_(TCardManager *this, CARDFileInfo*);
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int CARDOpen(int slot, const char *fileName, CARDFileInfo*);
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int CARDRead(CARDFileInfo *fileInfo, void *buf, unsigned long size, unsigned long offset);
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int CARDClose(CARDFileInfo *fileInfo);
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#define fileName "gct"
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#define dst ((void*)0x817F0000)
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#define size 0xE000 // 7 blocks
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int onReadOptionBlock(TCardManager *this, CARDFileInfo *fileInfo) {
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int rc;
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// mount
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if ((rc = mount_(this, 1))) goto orig;
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// open file
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if ((rc = CARDOpen(this->slot, fileName, fileInfo))) {
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// TODO error handling
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// if (rc == -4) // file not exists
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goto orig;
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}
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// read file to memory
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if ((rc = CARDRead(fileInfo, dst, size, 0))) {
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// should not fail if (dst, size) is properly set
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} else {
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// everything is good
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// TODO apply gecko code
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*(char*)0x817effff = 1; // ready (temporary solution)
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}
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// close file
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CARDClose(fileInfo);
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orig:
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// original function call
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return open_(this, fileInfo);
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}
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