1 files changed, 137 insertions, 0 deletions
diff --git a/src/core/hle/kernel/svc/svc_physical_memory.cpp b/src/core/hle/kernel/svc/svc_physical_memory.cpp
new file mode 100644
index 000000000..0fc262203
--- /dev/null
+++ b/src/core/hle/kernel/svc/svc_physical_memory.cpp
@@ -0,0 +1,137 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "core/core.h"
+#include "core/hle/kernel/k_process.h"
+#include "core/hle/kernel/svc.h"
+
+namespace Kernel::Svc {
+
+/// Set the process heap to a given Size. It can both extend and shrink the heap.
+Result SetHeapSize(Core::System& system, VAddr* out_address, u64 size) {
+    LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", size);
+
+    // Validate size.
+    R_UNLESS(Common::IsAligned(size, HeapSizeAlignment), ResultInvalidSize);
+    R_UNLESS(size < MainMemorySizeMax, ResultInvalidSize);
+
+    // Set the heap size.
+    R_TRY(system.Kernel().CurrentProcess()->PageTable().SetHeapSize(out_address, size));
+
+    return ResultSuccess;
+}
+
+Result SetHeapSize32(Core::System& system, u32* heap_addr, u32 heap_size) {
+    VAddr temp_heap_addr{};
+    const Result result{SetHeapSize(system, &temp_heap_addr, heap_size)};
+    *heap_addr = static_cast<u32>(temp_heap_addr);
+    return result;
+}
+
+/// Maps memory at a desired address
+Result MapPhysicalMemory(Core::System& system, VAddr addr, u64 size) {
+    LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size);
+
+    if (!Common::Is4KBAligned(addr)) {
+        LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr);
+        return ResultInvalidAddress;
+    }
+
+    if (!Common::Is4KBAligned(size)) {
+        LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, 0x{:X}", size);
+        return ResultInvalidSize;
+    }
+
+    if (size == 0) {
+        LOG_ERROR(Kernel_SVC, "Size is zero");
+        return ResultInvalidSize;
+    }
+
+    if (!(addr < addr + size)) {
+        LOG_ERROR(Kernel_SVC, "Size causes 64-bit overflow of address");
+        return ResultInvalidMemoryRegion;
+    }
+
+    KProcess* const current_process{system.Kernel().CurrentProcess()};
+    auto& page_table{current_process->PageTable()};
+
+    if (current_process->GetSystemResourceSize() == 0) {
+        LOG_ERROR(Kernel_SVC, "System Resource Size is zero");
+        return ResultInvalidState;
+    }
+
+    if (!page_table.IsInsideAddressSpace(addr, size)) {
+        LOG_ERROR(Kernel_SVC,
+                  "Address is not within the address space, addr=0x{:016X}, size=0x{:016X}", addr,
+                  size);
+        return ResultInvalidMemoryRegion;
+    }
+
+    if (page_table.IsOutsideAliasRegion(addr, size)) {
+        LOG_ERROR(Kernel_SVC,
+                  "Address is not within the alias region, addr=0x{:016X}, size=0x{:016X}", addr,
+                  size);
+        return ResultInvalidMemoryRegion;
+    }
+
+    return page_table.MapPhysicalMemory(addr, size);
+}
+
+Result MapPhysicalMemory32(Core::System& system, u32 addr, u32 size) {
+    return MapPhysicalMemory(system, addr, size);
+}
+
+/// Unmaps memory previously mapped via MapPhysicalMemory
+Result UnmapPhysicalMemory(Core::System& system, VAddr addr, u64 size) {
+    LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size);
+
+    if (!Common::Is4KBAligned(addr)) {
+        LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr);
+        return ResultInvalidAddress;
+    }
+
+    if (!Common::Is4KBAligned(size)) {
+        LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, 0x{:X}", size);
+        return ResultInvalidSize;
+    }
+
+    if (size == 0) {
+        LOG_ERROR(Kernel_SVC, "Size is zero");
+        return ResultInvalidSize;
+    }
+
+    if (!(addr < addr + size)) {
+        LOG_ERROR(Kernel_SVC, "Size causes 64-bit overflow of address");
+        return ResultInvalidMemoryRegion;
+    }
+
+    KProcess* const current_process{system.Kernel().CurrentProcess()};
+    auto& page_table{current_process->PageTable()};
+
+    if (current_process->GetSystemResourceSize() == 0) {
+        LOG_ERROR(Kernel_SVC, "System Resource Size is zero");
+        return ResultInvalidState;
+    }
+
+    if (!page_table.IsInsideAddressSpace(addr, size)) {
+        LOG_ERROR(Kernel_SVC,
+                  "Address is not within the address space, addr=0x{:016X}, size=0x{:016X}", addr,
+                  size);
+        return ResultInvalidMemoryRegion;
+    }
+
+    if (page_table.IsOutsideAliasRegion(addr, size)) {
+        LOG_ERROR(Kernel_SVC,
+                  "Address is not within the alias region, addr=0x{:016X}, size=0x{:016X}", addr,
+                  size);
+        return ResultInvalidMemoryRegion;
+    }
+
+    return page_table.UnmapPhysicalMemory(addr, size);
+}
+
+Result UnmapPhysicalMemory32(Core::System& system, u32 addr, u32 size) {
+    return UnmapPhysicalMemory(system, addr, size);
+}
+
+} // namespace Kernel::Svc