The-Homebrew-Cloud/MemoryMappingModule
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Allocate the page table on the heap to avoid a stack overflow

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Maschell 2023-03-27 18:11:31 +02:00
parent f2333e37dc
commit f9b2bcd660
1 changed files with 14 additions and 6 deletions
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20
source/memory_mapping.cpp
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@ -346,13 +346,18 @@ void MemoryMapping_setupMemoryMapping() {
//runOnAllCores(readAndPrintSegmentRegister,nullptr,0,16,0x80000);
sr_table_t srTableCpy;
uint32_t pageTableCpy[0x8000];
uint32_t sizePageTable = sizeof(uint32_t) * 0x8000;
auto *pageTableCpy = (uint32_t *) gMEMAllocFromDefaultHeapExForThreads(sizePageTable, 0x10);
if (!pageTableCpy) {
OSFatal("MemoryMappingModule: Failed to alloc memory for page table");
}
KernelReadSRs(&srTableCpy);
KernelReadPTE((uint32_t) pageTableCpy, sizeof(pageTableCpy));
KernelReadPTE((uint32_t) pageTableCpy, sizePageTable);
DCFlushRange(&srTableCpy, sizeof(srTableCpy));
DCFlushRange(pageTableCpy, sizeof(pageTableCpy));
DCFlushRange(pageTableCpy, sizePageTable);
for (int32_t i = 0; i < 16; i++) {
DEBUG_FUNCTION_LINE_VERBOSE("SR[%d]=%08X", i, srTableCpy.value[i]);
@ -384,9 +389,9 @@ void MemoryMapping_setupMemoryMapping() {
//printPageTableTranslation(srTableCpy,pageTableCpy);
DEBUG_FUNCTION_LINE_VERBOSE("Writing PageTable... ");
DCFlushRange(pageTableCpy, sizeof(pageTableCpy));
KernelWritePTE((uint32_t) pageTableCpy, sizeof(pageTableCpy));
DCFlushRange(pageTableCpy, sizeof(pageTableCpy));
DCFlushRange(pageTableCpy, sizePageTable);
KernelWritePTE((uint32_t) pageTableCpy, sizePageTable);
DCFlushRange(pageTableCpy, sizePageTable);
DEBUG_FUNCTION_LINE_VERBOSE("done");
//printPageTableTranslation(srTableCpy,pageTableCpy);
@ -400,6 +405,9 @@ void MemoryMapping_setupMemoryMapping() {
//runOnAllCores(writeSegmentRegister,&srTableCpy);
OSInitMutex(&allocMutex);
memset(pageTableCpy, 0, sizePageTable);
gMEMFreeToDefaultHeapForThreads(pageTableCpy);
}
void *MemoryMapping_allocEx(uint32_t size, int32_t align, bool videoOnly) {