1 files changed, 38 insertions, 17 deletions

diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 37d67b72e..63e2dff19 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -135,24 +135,15 @@ enum class ResourceLimitValueType {
 } // Anonymous namespace
 
 /// Set the process heap to a given Size. It can both extend and shrink the heap.
-static ResultCode SetHeapSize(Core::System& system, VAddr* heap_addr, u64 heap_size) {
-    LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", heap_size);
+static ResultCode SetHeapSize(Core::System& system, VAddr* out_address, u64 size) {
+    LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", size);
 
-    // Size must be a multiple of 0x200000 (2MB) and be equal to or less than 8GB.
-    if ((heap_size % 0x200000) != 0) {
-        LOG_ERROR(Kernel_SVC, "The heap size is not a multiple of 2MB, heap_size=0x{:016X}",
-                  heap_size);
-        return ResultInvalidSize;
-    }
-
-    if (heap_size >= 0x200000000) {
-        LOG_ERROR(Kernel_SVC, "The heap size is not less than 8GB, heap_size=0x{:016X}", heap_size);
-        return ResultInvalidSize;
-    }
-
-    auto& page_table{system.Kernel().CurrentProcess()->PageTable()};
+    // Validate size.
+    R_UNLESS(Common::IsAligned(size, HeapSizeAlignment), ResultInvalidSize);
+    R_UNLESS(size < MainMemorySizeMax, ResultInvalidSize);
 
-    CASCADE_RESULT(*heap_addr, page_table.SetHeapSize(heap_size));
+    // Set the heap size.
+    R_TRY(system.Kernel().CurrentProcess()->PageTable().SetHeapSize(out_address, size));
 
     return ResultSuccess;
 }
@@ -164,6 +155,36 @@ static ResultCode SetHeapSize32(Core::System& system, u32* heap_addr, u32 heap_s
     return result;
 }
 
+constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
+    switch (perm) {
+    case MemoryPermission::None:
+    case MemoryPermission::Read:
+    case MemoryPermission::ReadWrite:
+        return true;
+    default:
+        return false;
+    }
+}
+
+static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 size,
+                                      MemoryPermission perm) {
+    // Validate address / size.
+    R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
+    R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
+    R_UNLESS(size > 0, ResultInvalidSize);
+    R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
+
+    // Validate the permission.
+    R_UNLESS(IsValidSetMemoryPermission(perm), ResultInvalidNewMemoryPermission);
+
+    // Validate that the region is in range for the current process.
+    auto& page_table = system.Kernel().CurrentProcess()->PageTable();
+    R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
+
+    // Set the memory attribute.
+    return page_table.SetMemoryPermission(address, size, perm);
+}
+
 static ResultCode SetMemoryAttribute(Core::System& system, VAddr address, u64 size, u32 mask,
                                      u32 attribute) {
     LOG_DEBUG(Kernel_SVC,
@@ -2724,7 +2745,7 @@ static const FunctionDef SVC_Table_32[] = {
 static const FunctionDef SVC_Table_64[] = {
     {0x00, nullptr, "Unknown"},
     {0x01, SvcWrap64<SetHeapSize>, "SetHeapSize"},
-    {0x02, nullptr, "SetMemoryPermission"},
+    {0x02, SvcWrap64<SetMemoryPermission>, "SetMemoryPermission"},
     {0x03, SvcWrap64<SetMemoryAttribute>, "SetMemoryAttribute"},
     {0x04, SvcWrap64<MapMemory>, "MapMemory"},
     {0x05, SvcWrap64<UnmapMemory>, "UnmapMemory"},