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Clear unused DLDI space

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This commit is contained in:
RocketRobz 2018-10-11 14:05:17 -06:00
parent fd48c138d6
commit 5a3830fc79
1 changed files with 14 additions and 1 deletions
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15
arm9/source/driveOperations.cpp
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@ -89,6 +89,19 @@ TWL_CODE DLDI_INTERFACE* dldiLoadFromBin (const u8 dldiAddr[]) {
}
DLDI_INTERFACE* device = (DLDI_INTERFACE*)dldiAddr;
size_t dldiSize;
// Calculate actual size of DLDI
// Although the file may only go to the dldiEnd, the BSS section can extend past that
if (device->dldiEnd > device->bssEnd) {
dldiSize = (char*)device->dldiEnd - (char*)device->dldiStart;
} else {
dldiSize = (char*)device->bssEnd - (char*)device->dldiStart;
}
dldiSize = (dldiSize + 0x03) & ~0x03; // Round up to nearest integer multiple
// Clear unused space
memset(device+dldiSize, 0, 0x4000-dldiSize);
dldiFixDriverAddresses (device);
@ -149,7 +162,7 @@ TWL_CODE bool twl_flashcardMount(void) {
// Read a DLDI driver specific to the cart
if (!memcmp(gameid, "ASMA", 4)) {
io_dldi_data = dldiLoadFromBin(r4_sd_dldi);
io_dldi_data = dldiLoadFromBin(r4tf_dldi);
fatMountSimple("fat", &io_dldi_data->ioInterface);
} else if (!memcmp(gamename, "TOP TF/SD DS", 12) || !memcmp(gameid, "A76E", 4)) {
io_dldi_data = dldiLoadFromBin(tt_sd_dldi);