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Implement sceKernelIsStack (#2917)

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Marcin Mikołajczyk 2025-05-13 22:54:22 +02:00 • committed by GitHub
parent 484fbcc320
commit 1832ec2ac2
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4 changed files with 40 additions and 0 deletions
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8
src/core/libraries/kernel/memory.cpp
View file

@ -290,6 +290,13 @@ int PS4_SYSV_ABI sceKernelGetDirectMemoryType(u64 addr, int* directMemoryTypeOut
directMemoryEndOut);
}
int PS4_SYSV_ABI sceKernelIsStack(void* addr, void** start, void** end) {
LOG_DEBUG(Kernel_Vmm, "called, addr = {:#x}, start = {:#x}, end = {:#x}", fmt::ptr(addr),
fmt::ptr(start), fmt::ptr(end));
auto* memory = Core::Memory::Instance();
return memory->IsStack(std::bit_cast<VAddr>(addr), start, end);
}
s32 PS4_SYSV_ABI sceKernelBatchMap(OrbisKernelBatchMapEntry* entries, int numEntries,
int* numEntriesOut) {
return sceKernelBatchMap2(entries, numEntries, numEntriesOut,
@ -636,6 +643,7 @@ void RegisterMemory(Core::Loader::SymbolsResolver* sym) {
LIB_FUNCTION("7oxv3PPCumo", "libkernel", 1, "libkernel", 1, 1, sceKernelReserveVirtualRange);
LIB_FUNCTION("BC+OG5m9+bw", "libkernel", 1, "libkernel", 1, 1, sceKernelGetDirectMemoryType);
LIB_FUNCTION("pO96TwzOm5E", "libkernel", 1, "libkernel", 1, 1, sceKernelGetDirectMemorySize);
LIB_FUNCTION("yDBwVAolDgg", "libkernel", 1, "libkernel", 1, 1, sceKernelIsStack);
LIB_FUNCTION("NcaWUxfMNIQ", "libkernel", 1, "libkernel", 1, 1, sceKernelMapNamedDirectMemory);
LIB_FUNCTION("L-Q3LEjIbgA", "libkernel", 1, "libkernel", 1, 1, sceKernelMapDirectMemory);
LIB_FUNCTION("WFcfL2lzido", "libkernel", 1, "libkernel", 1, 1, sceKernelQueryMemoryProtection);

1
src/core/libraries/kernel/memory.h
View file

@ -158,6 +158,7 @@ void PS4_SYSV_ABI _sceKernelRtldSetApplicationHeapAPI(void* func[]);
int PS4_SYSV_ABI sceKernelGetDirectMemoryType(u64 addr, int* directMemoryTypeOut,
void** directMemoryStartOut,
void** directMemoryEndOut);
int PS4_SYSV_ABI sceKernelIsStack(void* addr, void** start, void** end);
s32 PS4_SYSV_ABI sceKernelBatchMap(OrbisKernelBatchMapEntry* entries, int numEntries,
int* numEntriesOut);

29
src/core/memory.cpp
View file

@ -949,4 +949,33 @@ int MemoryManager::GetDirectMemoryType(PAddr addr, int* directMemoryTypeOut,
return ORBIS_OK;
}
int MemoryManager::IsStack(VAddr addr, void** start, void** end) {
auto vma_handle = FindVMA(addr);
if (vma_handle == vma_map.end()) {
return ORBIS_KERNEL_ERROR_EINVAL;
}
const VirtualMemoryArea& vma = vma_handle->second;
if (!vma.Contains(addr, 0) || vma.IsFree()) {
return ORBIS_KERNEL_ERROR_EACCES;
}
auto stack_start = 0ul;
auto stack_end = 0ul;
if (vma.type == VMAType::Stack) {
stack_start = vma.base;
stack_end = vma.base + vma.size;
}
if (start != nullptr) {
*start = reinterpret_cast<void*>(stack_start);
}
if (end != nullptr) {
*end = reinterpret_cast<void*>(stack_end);
}
return ORBIS_OK;
}
} // namespace Core

2
src/core/memory.h
View file

@ -223,6 +223,8 @@ public:
void InvalidateMemory(VAddr addr, u64 size) const;
int IsStack(VAddr addr, void** start, void** end);
private:
VMAHandle FindVMA(VAddr target) {
return std::prev(vma_map.upper_bound(target));