Decompile mempak.c (#191)

1 files changed, 188 insertions, 0 deletions

diff --git a/src/code/mempak.c b/src/code/mempak.c
new file mode 100644
index 000000000..0c71f8756
--- /dev/null
+++ b/src/code/mempak.c
@@ -0,0 +1,188 @@
+#include <global.h>
+
+OSPfs sMempakPfsHandle;
+s32 sMempakFreeBytes;
+s32 sMempakFiles[10];
+
+u16 sMempakCompanyCode = 1;
+u32 sMempakGameCode = 1;
+
+// "ZELDA DEMO TOOL "
+u8 sMempakGameName[0x10] = { 0x33, 0x1E, 0x25, 0x1D, 0x1A, 0x0F, 0x1D, 0x1E, 0x26, 0x28, 0x0F, 0x2D, 0x28, 0x28, 0x25, 0x0F };
+u8 sMempakExtName[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+s32 Mempak_Init(s32 controllerNb) {
+    OSMesgQueue* mq;
+    u32 pad;
+    s32 ret;
+
+    ret = false;
+    mq = PadMgr_LockSerialMesgQueue(&gPadMgr);
+
+    if (!osPfsInitPak(mq, &sMempakPfsHandle, controllerNb)) {
+        ret = true;
+    }
+
+    osPfsFreeBlocks(&sMempakPfsHandle, &sMempakFreeBytes);
+    PadMgr_UnlockSerialMesgQueue(&gPadMgr, mq);
+
+    return ret;
+}
+
+s32 Mempak_GetFreeBytes(s32 controllerNb) {
+    return sMempakFreeBytes;
+}
+
+s32 Mempak_FindFile(s32 controllerNb, char start, char end) {
+
+    OSMesgQueue* mq;
+    s32 error;
+    char idx;
+    u32 bit;
+    s32 flag;
+
+    bit = 1;
+    flag = 0;
+
+    mq = PadMgr_LockSerialMesgQueue(&gPadMgr);
+    for (idx = start; idx <= end; idx++) {
+        sMempakExtName[0] = idx - 0x27;
+
+        error = osPfsFindFile(&sMempakPfsHandle, sMempakCompanyCode, sMempakGameCode, sMempakGameName, sMempakExtName,
+                              &sMempakFiles[idx - 'A']);
+        if (error == 0) {
+            flag |= bit;
+        } else {
+            sMempakFiles[idx - 'A'] = -1;
+        }
+
+        bit <<= 1;
+        osSyncPrintf("mempak: find '%c' (%d)\n", idx, error);
+    }
+
+    PadMgr_UnlockSerialMesgQueue(&gPadMgr, mq);
+    osSyncPrintf("mempak: find '%c' - '%c' %02x\n", start, end, flag);
+
+    return flag;
+}
+
+s32 Mempak_Write(s32 controllerNb, char idx, void* buffer, s32 offset, s32 size) {
+    OSMesgQueue* mq;
+    s32 error;
+    s32 ret;
+    u32 pad;
+
+    ret = false;
+    mq = PadMgr_LockSerialMesgQueue(&gPadMgr);
+    if (size < sMempakFreeBytes) {
+        error = osPfsReadWriteFile(&sMempakPfsHandle, sMempakFiles[idx - 'A'], 1, offset, size, buffer);
+        if (error == 0) {
+            ret = true;
+        }
+        osSyncPrintf("mempak: write %d byte '%c' (%d)->%d\n", size, idx, sMempakFiles[idx - 'A'], error);
+    }
+    PadMgr_UnlockSerialMesgQueue(&gPadMgr, mq);
+    return ret;
+}
+
+s32 Mempak_Read(s32 controllerNb, char idx, void* buffer, s32 offset, s32 size) {
+    OSMesgQueue* mq;
+    s32 error;
+    s32 ret;
+    u32 pad;
+
+    ret = false;
+    mq = PadMgr_LockSerialMesgQueue(&gPadMgr);
+    if (size < sMempakFreeBytes) {
+        error = osPfsReadWriteFile(&sMempakPfsHandle, sMempakFiles[idx - 'A'], 0, offset, size, buffer);
+        if (error == 0) {
+            ret = true;
+        }
+        osSyncPrintf("mempak: read %d byte '%c' (%d)<-%d\n", size, idx, sMempakFiles[idx - 'A'], error);
+    }
+    PadMgr_UnlockSerialMesgQueue(&gPadMgr, mq);
+    return ret;
+}
+
+s32 Mempak_Alloc(s32 controllerNb, char* idx, s32 size) {
+    OSMesgQueue* mq;
+    s32 error;
+    s32 ret;
+    s32 i;
+    u32 pad;
+
+    ret = 0;
+    mq = PadMgr_LockSerialMesgQueue(&gPadMgr);
+    if (*idx >= 'A' && *idx < 'L') {
+        sMempakExtName[0] = *idx - 0x27;
+        if (-1 == sMempakFiles[*idx - 'A']) {
+            error = osPfsAllocateFile(&sMempakPfsHandle, sMempakCompanyCode, sMempakGameCode, sMempakGameName,
+                                      sMempakExtName, size, &sMempakFiles[*idx - 'A']);
+            if (error == 0) {
+                ret = 1;
+            }
+            osSyncPrintf("mempak: alloc %d byte '%c' (%d)\n", size, *idx, error);
+        } else {
+            sMempakExtName[0] = *idx - 0x27;
+            if (osPfsDeleteFile(&sMempakPfsHandle, sMempakCompanyCode, sMempakGameCode, sMempakGameName,
+                                sMempakExtName) == 0) {
+                ret = 1;
+            }
+            error = osPfsAllocateFile(&sMempakPfsHandle, sMempakCompanyCode, sMempakGameCode, sMempakGameName,
+                                      sMempakExtName, size, &sMempakFiles[*idx - 'A']);
+            if (error == 0) {
+                ret |= 1;
+            }
+            osSyncPrintf("mempak: resize %d byte '%c' (%d)\n", size, *idx, error);
+        }
+    } else {
+        for (i = 0; i < ARRAY_COUNT(sMempakFiles); i++) {
+            if (sMempakFiles[i] == -1) {
+                break;
+            }
+        }
+
+        *idx = i + 'A';
+        sMempakExtName[0] = *idx - 0x27;
+        error = osPfsAllocateFile(&sMempakPfsHandle, sMempakCompanyCode, sMempakGameCode, sMempakGameName,
+                                  sMempakExtName, size, &sMempakFiles[i]);
+        osSyncPrintf("mempak: alloc %d byte '%c' (%d) with search\n", size, *idx, error);
+        if (error == 0) {
+            ret = 1;
+        }
+    }
+    PadMgr_UnlockSerialMesgQueue(&gPadMgr, mq);
+    return ret;
+}
+
+s32 Mempak_DeleteFile(s32 controllerNb, char idx) {
+    OSMesgQueue* mq;
+    s32 error;
+    s32 ret;
+
+    ret = false;
+    mq = PadMgr_LockSerialMesgQueue(&gPadMgr);
+    sMempakExtName[0] = idx - 0x27;
+    error = osPfsDeleteFile(&sMempakPfsHandle, sMempakCompanyCode, sMempakGameCode, sMempakGameName, sMempakExtName);
+    if (error == 0) {
+        ret = true;
+    }
+    osSyncPrintf("mempak: delete '%c' (%d)\n", idx, error);
+    PadMgr_UnlockSerialMesgQueue(&gPadMgr, mq);
+    return ret;
+}
+
+s32 Mempak_GetFileSize(s32 controllerNb, char idx) {
+    OSMesgQueue* mq;
+    OSPfsState state;
+    s32 error;
+    u32 pad;
+
+    mq = PadMgr_LockSerialMesgQueue(&gPadMgr);
+    error = osPfsFileState(&sMempakPfsHandle, sMempakFiles[idx - 'A'], &state);
+    PadMgr_UnlockSerialMesgQueue(&gPadMgr, mq);
+    if (error != 0) {
+        return 0;
+    }
+    return state.file_size;
+}