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Memory: IsValidVirtualAddress can be global

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This commit is contained in:
Weiyi Wang 2018-11-21 16:51:41 -05:00
parent 42edab01d9
commit c6b3186475
6 changed files with 27 additions and 27 deletions
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8
src/core/gdbstub/gdbstub.cpp
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@ -832,8 +832,8 @@ static void ReadMemory() {
SendReply("E01"); SendReply("E01");
} }
if (!Core::System::GetInstance().Memory().IsValidVirtualAddress( if (!Memory::IsValidVirtualAddress(*Core::System::GetInstance().Kernel().GetCurrentProcess(),
*Core::System::GetInstance().Kernel().GetCurrentProcess(), addr)) { addr)) {
return SendReply("E00"); return SendReply("E00");
} }
@ -856,8 +856,8 @@ static void WriteMemory() {
auto len_pos = std::find(start_offset, command_buffer + command_length, ':'); auto len_pos = std::find(start_offset, command_buffer + command_length, ':');
u32 len = HexToInt(start_offset, static_cast<u32>(len_pos - start_offset)); u32 len = HexToInt(start_offset, static_cast<u32>(len_pos - start_offset));
if (!Core::System::GetInstance().Memory().IsValidVirtualAddress( if (!Memory::IsValidVirtualAddress(*Core::System::GetInstance().Kernel().GetCurrentProcess(),
*Core::System::GetInstance().Kernel().GetCurrentProcess(), addr)) { addr)) {
return SendReply("E00"); return SendReply("E00");
} }

6
src/core/hle/kernel/svc.cpp
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@ -347,7 +347,7 @@ ResultCode SVC::UnmapMemoryBlock(Handle handle, u32 addr) {
/// Connect to an OS service given the port name, returns the handle to the port to out /// Connect to an OS service given the port name, returns the handle to the port to out
ResultCode SVC::ConnectToPort(Handle* out_handle, VAddr port_name_address) { ResultCode SVC::ConnectToPort(Handle* out_handle, VAddr port_name_address) {
if (!memory.IsValidVirtualAddress(*kernel.GetCurrentProcess(), port_name_address)) if (!Memory::IsValidVirtualAddress(*kernel.GetCurrentProcess(), port_name_address))
return ERR_NOT_FOUND; return ERR_NOT_FOUND;
static constexpr std::size_t PortNameMaxLength = 11; static constexpr std::size_t PortNameMaxLength = 11;
@ -452,7 +452,7 @@ ResultCode SVC::WaitSynchronizationN(s32* out, VAddr handles_address, s32 handle
bool wait_all, s64 nano_seconds) { bool wait_all, s64 nano_seconds) {
Thread* thread = kernel.GetThreadManager().GetCurrentThread(); Thread* thread = kernel.GetThreadManager().GetCurrentThread();
if (!memory.IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address)) if (!Memory::IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address))
return ERR_INVALID_POINTER; return ERR_INVALID_POINTER;
// NOTE: on real hardware, there is no nullptr check for 'out' (tested with firmware 4.4). If // NOTE: on real hardware, there is no nullptr check for 'out' (tested with firmware 4.4). If
@ -623,7 +623,7 @@ static ResultCode ReceiveIPCRequest(SharedPtr<ServerSession> server_session,
/// In a single operation, sends a IPC reply and waits for a new request. /// In a single operation, sends a IPC reply and waits for a new request.
ResultCode SVC::ReplyAndReceive(s32* index, VAddr handles_address, s32 handle_count, ResultCode SVC::ReplyAndReceive(s32* index, VAddr handles_address, s32 handle_count,
Handle reply_target) { Handle reply_target) {
if (!memory.IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address)) if (!Memory::IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address))
return ERR_INVALID_POINTER; return ERR_INVALID_POINTER;
// Check if 'handle_count' is invalid // Check if 'handle_count' is invalid

2
src/core/hle/kernel/thread.cpp
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@ -303,7 +303,7 @@ ResultVal<SharedPtr<Thread>> KernelSystem::CreateThread(std::string name, VAddr
// TODO(yuriks): Other checks, returning 0xD9001BEA // TODO(yuriks): Other checks, returning 0xD9001BEA
if (!memory.IsValidVirtualAddress(owner_process, entry_point)) { if (!Memory::IsValidVirtualAddress(owner_process, entry_point)) {
LOG_ERROR(Kernel_SVC, "(name={}): invalid entry {:08x}", name, entry_point); LOG_ERROR(Kernel_SVC, "(name={}): invalid entry {:08x}", name, entry_point);
// TODO: Verify error // TODO: Verify error
return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel, return ResultCode(ErrorDescription::InvalidAddress, ErrorModule::Kernel,

4
src/core/memory.cpp
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@ -28,7 +28,7 @@ void MemorySystem::SetCurrentPageTable(PageTable* page_table) {
} }
} }
PageTable* MemorySystem::GetCurrentPageTable() { PageTable* MemorySystem::GetCurrentPageTable() const {
return current_page_table; return current_page_table;
} }
@ -173,7 +173,7 @@ void MemorySystem::Write(const VAddr vaddr, const T data) {
} }
} }
bool MemorySystem::IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) { bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) {
auto& page_table = process.vm_manager.page_table; auto& page_table = process.vm_manager.page_table;
const u8* page_pointer = page_table.pointers[vaddr >> PAGE_BITS]; const u8* page_pointer = page_table.pointers[vaddr >> PAGE_BITS];

8
src/core/memory.h
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@ -212,7 +212,7 @@ class MemorySystem {
public: public:
/// Currently active page table /// Currently active page table
void SetCurrentPageTable(PageTable* page_table); void SetCurrentPageTable(PageTable* page_table);
PageTable* GetCurrentPageTable(); PageTable* GetCurrentPageTable() const;
u8 Read8(VAddr addr); u8 Read8(VAddr addr);
u16 Read16(VAddr addr); u16 Read16(VAddr addr);
@ -236,9 +236,6 @@ public:
std::string ReadCString(VAddr vaddr, std::size_t max_length); std::string ReadCString(VAddr vaddr, std::size_t max_length);
/// Determines if the given VAddr is valid for the specified process.
bool IsValidVirtualAddress(const Kernel::Process& process, VAddr vaddr);
/** /**
* Gets a pointer to the memory region beginning at the specified physical address. * Gets a pointer to the memory region beginning at the specified physical address.
*/ */
@ -279,4 +276,7 @@ private:
PageTable* current_page_table = nullptr; PageTable* current_page_table = nullptr;
}; };
/// Determines if the given VAddr is valid for the specified process.
bool IsValidVirtualAddress(const Kernel::Process& process, VAddr vaddr);
} // namespace Memory } // namespace Memory

26
src/tests/core/memory/memory.cpp
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@ -10,27 +10,27 @@
#include "core/hle/kernel/shared_page.h" #include "core/hle/kernel/shared_page.h"
#include "core/memory.h" #include "core/memory.h"
TEST_CASE("MemorySystem::IsValidVirtualAddress", "[core][memory]") { TEST_CASE("Memory::IsValidVirtualAddress", "[core][memory]") {
// HACK: see comments of member timing // HACK: see comments of member timing
Core::System::GetInstance().timing = std::make_unique<Core::Timing>(); Core::System::GetInstance().timing = std::make_unique<Core::Timing>();
Memory::MemorySystem memory; Memory::MemorySystem memory;
Kernel::KernelSystem kernel(memory, 0); Kernel::KernelSystem kernel(memory, 0);
SECTION("these regions should not be mapped on an empty process") { SECTION("these regions should not be mapped on an empty process") {
auto process = kernel.CreateProcess(kernel.CreateCodeSet("", 0)); auto process = kernel.CreateProcess(kernel.CreateCodeSet("", 0));
CHECK(memory.IsValidVirtualAddress(*process, Memory::PROCESS_IMAGE_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::PROCESS_IMAGE_VADDR) == false);
CHECK(memory.IsValidVirtualAddress(*process, Memory::HEAP_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::HEAP_VADDR) == false);
CHECK(memory.IsValidVirtualAddress(*process, Memory::LINEAR_HEAP_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::LINEAR_HEAP_VADDR) == false);
CHECK(memory.IsValidVirtualAddress(*process, Memory::VRAM_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::VRAM_VADDR) == false);
CHECK(memory.IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == false);
CHECK(memory.IsValidVirtualAddress(*process, Memory::SHARED_PAGE_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::SHARED_PAGE_VADDR) == false);
CHECK(memory.IsValidVirtualAddress(*process, Memory::TLS_AREA_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::TLS_AREA_VADDR) == false);
} }
SECTION("CONFIG_MEMORY_VADDR and SHARED_PAGE_VADDR should be valid after mapping them") { SECTION("CONFIG_MEMORY_VADDR and SHARED_PAGE_VADDR should be valid after mapping them") {
auto process = kernel.CreateProcess(kernel.CreateCodeSet("", 0)); auto process = kernel.CreateProcess(kernel.CreateCodeSet("", 0));
kernel.MapSharedPages(process->vm_manager); kernel.MapSharedPages(process->vm_manager);
CHECK(memory.IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == true); CHECK(Memory::IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == true);
CHECK(memory.IsValidVirtualAddress(*process, Memory::SHARED_PAGE_VADDR) == true); CHECK(Memory::IsValidVirtualAddress(*process, Memory::SHARED_PAGE_VADDR) == true);
} }
SECTION("special regions should be valid after mapping them") { SECTION("special regions should be valid after mapping them") {
@ -38,13 +38,13 @@ TEST_CASE("MemorySystem::IsValidVirtualAddress", "[core][memory]") {
SECTION("VRAM") { SECTION("VRAM") {
kernel.HandleSpecialMapping(process->vm_manager, kernel.HandleSpecialMapping(process->vm_manager,
{Memory::VRAM_VADDR, Memory::VRAM_SIZE, false, false}); {Memory::VRAM_VADDR, Memory::VRAM_SIZE, false, false});
CHECK(memory.IsValidVirtualAddress(*process, Memory::VRAM_VADDR) == true); CHECK(Memory::IsValidVirtualAddress(*process, Memory::VRAM_VADDR) == true);
} }
SECTION("IO (Not yet implemented)") { SECTION("IO (Not yet implemented)") {
kernel.HandleSpecialMapping( kernel.HandleSpecialMapping(
process->vm_manager, {Memory::IO_AREA_VADDR, Memory::IO_AREA_SIZE, false, false}); process->vm_manager, {Memory::IO_AREA_VADDR, Memory::IO_AREA_SIZE, false, false});
CHECK_FALSE(memory.IsValidVirtualAddress(*process, Memory::IO_AREA_VADDR) == true); CHECK_FALSE(Memory::IsValidVirtualAddress(*process, Memory::IO_AREA_VADDR) == true);
} }
} }
@ -52,6 +52,6 @@ TEST_CASE("MemorySystem::IsValidVirtualAddress", "[core][memory]") {
auto process = kernel.CreateProcess(kernel.CreateCodeSet("", 0)); auto process = kernel.CreateProcess(kernel.CreateCodeSet("", 0));
kernel.MapSharedPages(process->vm_manager); kernel.MapSharedPages(process->vm_manager);
process->vm_manager.UnmapRange(Memory::CONFIG_MEMORY_VADDR, Memory::CONFIG_MEMORY_SIZE); process->vm_manager.UnmapRange(Memory::CONFIG_MEMORY_VADDR, Memory::CONFIG_MEMORY_SIZE);
CHECK(memory.IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == false); CHECK(Memory::IsValidVirtualAddress(*process, Memory::CONFIG_MEMORY_VADDR) == false);
} }
} }