N-archive/citra
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Merge pull request #4442 from wwylele/memory-no-kernel

Browse source 
Memory: decouple from Kernel
This commit is contained in:
Weiyi Wang 2018-11-28 11:24:41 -05:00 committed by GitHub
commit 7e90abec78
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 117 additions and 139 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
src/core/gdbstub/gdbstub.cpp
View file

@ -409,7 +409,8 @@ static void RemoveBreakpoint(BreakpointType type, VAddr addr) {
LOG_DEBUG(Debug_GDBStub, "gdb: removed a breakpoint: {:08x} bytes at {:08x} of type {}",
bp->second.len, bp->second.addr, static_cast<int>(type));
Memory::WriteBlock(bp->second.addr, bp->second.inst.data(), bp->second.inst.size());
Memory::WriteBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), bp->second.addr,
bp->second.inst.data(), bp->second.inst.size());
Core::CPU().ClearInstructionCache();
p.erase(addr);
}
@ -830,12 +831,14 @@ static void ReadMemory() {
SendReply("E01");
}
if (!Memory::IsValidVirtualAddress(addr)) {
if (!Memory::IsValidVirtualAddress(*Core::System::GetInstance().Kernel().GetCurrentProcess(),
addr)) {
return SendReply("E00");
}
std::vector<u8> data(len);
Memory::ReadBlock(addr, data.data(), len);
Memory::ReadBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), addr, data.data(),
len);
MemToGdbHex(reply, data.data(), len);
reply[len * 2] = '\0';
@ -852,14 +855,16 @@ static void WriteMemory() {
auto len_pos = std::find(start_offset, command_buffer + command_length, ':');
u32 len = HexToInt(start_offset, static_cast<u32>(len_pos - start_offset));
if (!Memory::IsValidVirtualAddress(addr)) {
if (!Memory::IsValidVirtualAddress(*Core::System::GetInstance().Kernel().GetCurrentProcess(),
addr)) {
return SendReply("E00");
}
std::vector<u8> data(len);
GdbHexToMem(data.data(), len_pos + 1, len);
Memory::WriteBlock(addr, data.data(), len);
Memory::WriteBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), addr, data.data(),
len);
Core::CPU().ClearInstructionCache();
SendReply("OK");
}
@ -912,9 +917,11 @@ static bool CommitBreakpoint(BreakpointType type, VAddr addr, u32 len) {
breakpoint.active = true;
breakpoint.addr = addr;
breakpoint.len = len;
Memory::ReadBlock(addr, breakpoint.inst.data(), breakpoint.inst.size());
Memory::ReadBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), addr,
breakpoint.inst.data(), breakpoint.inst.size());
static constexpr std::array<u8, 4> btrap{0x70, 0x00, 0x20, 0xe1};
Memory::WriteBlock(addr, btrap.data(), btrap.size());
Memory::WriteBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), addr,
btrap.data(), btrap.size());
Core::CPU().ClearInstructionCache();
p.insert({addr, breakpoint});

8
src/core/hle/kernel/svc.cpp
View file

@ -346,7 +346,7 @@ ResultCode SVC::UnmapMemoryBlock(Handle handle, u32 addr) {
/// Connect to an OS service given the port name, returns the handle to the port to out
ResultCode SVC::ConnectToPort(Handle* out_handle, VAddr port_name_address) {
if (!Memory::IsValidVirtualAddress(port_name_address))
if (!Memory::IsValidVirtualAddress(*kernel.GetCurrentProcess(), port_name_address))
return ERR_NOT_FOUND;
static constexpr std::size_t PortNameMaxLength = 11;
@ -451,7 +451,7 @@ ResultCode SVC::WaitSynchronizationN(s32* out, VAddr handles_address, s32 handle
bool wait_all, s64 nano_seconds) {
Thread* thread = kernel.GetThreadManager().GetCurrentThread();
if (!Memory::IsValidVirtualAddress(handles_address))
if (!Memory::IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address))
return ERR_INVALID_POINTER;
// NOTE: on real hardware, there is no nullptr check for 'out' (tested with firmware 4.4). If
@ -622,7 +622,7 @@ static ResultCode ReceiveIPCRequest(SharedPtr<ServerSession> server_session,
/// 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,
Handle reply_target) {
if (!Memory::IsValidVirtualAddress(handles_address))
if (!Memory::IsValidVirtualAddress(*kernel.GetCurrentProcess(), handles_address))
return ERR_INVALID_POINTER;
// Check if 'handle_count' is invalid
@ -801,7 +801,7 @@ void SVC::OutputDebugString(VAddr address, s32 len) {
}
std::string string(len, ' ');
Memory::ReadBlock(address, string.data(), len);
Memory::ReadBlock(*kernel.GetCurrentProcess(), address, string.data(), len);
LOG_DEBUG(Debug_Emulated, "{}", string);
}

3
src/core/hle/service/gsp/gsp_gpu.cpp
View file

@ -502,7 +502,8 @@ static void ExecuteCommand(const Command& command, u32 thread_id) {
// TODO(Subv): These memory accesses should not go through the application's memory mapping.
// They should go through the GSP module's memory mapping.
Memory::CopyBlock(command.dma_request.dest_address, command.dma_request.source_address,
Memory::CopyBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(),
command.dma_request.dest_address, command.dma_request.source_address,
command.dma_request.size);
SignalInterrupt(InterruptId::DMA);
break;

64
src/core/hle/service/ldr_ro/cro_helper.cpp
View file

@ -7,6 +7,7 @@
#include "common/scope_exit.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/hle/kernel/process.h"
#include "core/hle/service/ldr_ro/cro_helper.h"
namespace Service::LDR {
@ -120,7 +121,7 @@ ResultCode CROHelper::ApplyRelocationBatch(VAddr batch, u32 symbol_address, bool
VAddr relocation_address = batch;
while (true) {
RelocationEntry relocation;
Memory::ReadBlock(relocation_address, &relocation, sizeof(RelocationEntry));
Memory::ReadBlock(process, relocation_address, &relocation, sizeof(RelocationEntry));
VAddr relocation_target = SegmentTagToAddress(relocation.target_position);
if (relocation_target == 0) {
@ -141,9 +142,9 @@ ResultCode CROHelper::ApplyRelocationBatch(VAddr batch, u32 symbol_address, bool
}
RelocationEntry relocation;
Memory::ReadBlock(batch, &relocation, sizeof(RelocationEntry));
Memory::ReadBlock(process, batch, &relocation, sizeof(RelocationEntry));
relocation.is_batch_resolved = reset ? 0 : 1;
Memory::WriteBlock(batch, &relocation, sizeof(RelocationEntry));
Memory::WriteBlock(process, batch, &relocation, sizeof(RelocationEntry));
return RESULT_SUCCESS;
}
@ -547,7 +548,7 @@ ResultCode CROHelper::ApplyStaticAnonymousSymbolToCRS(VAddr crs_address) {
static_relocation_table_offset +
GetField(StaticRelocationNum) * sizeof(StaticRelocationEntry);
CROHelper crs(crs_address);
CROHelper crs(crs_address, process);
u32 offset_export_num = GetField(StaticAnonymousSymbolNum);
LOG_INFO(Service_LDR, "CRO \"{}\" exports {} static anonymous symbols", ModuleName(),
offset_export_num);
@ -753,11 +754,12 @@ ResultCode CROHelper::ApplyImportNamedSymbol(VAddr crs_address) {
GetEntry(i, entry);
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
Memory::ReadBlock(process, relocation_addr, &relocation_entry,
sizeof(ExternalRelocationEntry));
if (!relocation_entry.is_batch_resolved) {
ResultCode result =
ForEachAutoLinkCRO(crs_address, [&](CROHelper source) -> ResultVal<bool> {
ForEachAutoLinkCRO(process, crs_address, [&](CROHelper source) -> ResultVal<bool> {
std::string symbol_name =
Memory::ReadCString(entry.name_offset, import_strings_size);
u32 symbol_address = source.FindExportNamedSymbol(symbol_name);
@ -795,7 +797,8 @@ ResultCode CROHelper::ResetImportNamedSymbol() {
GetEntry(i, entry);
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
Memory::ReadBlock(process, relocation_addr, &relocation_entry,
sizeof(ExternalRelocationEntry));
ResultCode result = ApplyRelocationBatch(relocation_addr, unresolved_symbol, true);
if (result.IsError()) {
@ -815,7 +818,8 @@ ResultCode CROHelper::ResetImportIndexedSymbol() {
GetEntry(i, entry);
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
Memory::ReadBlock(process, relocation_addr, &relocation_entry,
sizeof(ExternalRelocationEntry));
ResultCode result = ApplyRelocationBatch(relocation_addr, unresolved_symbol, true);
if (result.IsError()) {
@ -835,7 +839,8 @@ ResultCode CROHelper::ResetImportAnonymousSymbol() {
GetEntry(i, entry);
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
Memory::ReadBlock(process, relocation_addr, &relocation_entry,
sizeof(ExternalRelocationEntry));
ResultCode result = ApplyRelocationBatch(relocation_addr, unresolved_symbol, true);
if (result.IsError()) {
@ -856,13 +861,13 @@ ResultCode CROHelper::ApplyModuleImport(VAddr crs_address) {
std::string want_cro_name = Memory::ReadCString(entry.name_offset, import_strings_size);
ResultCode result =
ForEachAutoLinkCRO(crs_address, [&](CROHelper source) -> ResultVal<bool> {
ForEachAutoLinkCRO(process, crs_address, [&](CROHelper source) -> ResultVal<bool> {
if (want_cro_name == source.ModuleName()) {
LOG_INFO(Service_LDR, "CRO \"{}\" imports {} indexed symbols from \"{}\"",
ModuleName(), entry.import_indexed_symbol_num, source.ModuleName());
for (u32 j = 0; j < entry.import_indexed_symbol_num; ++j) {
ImportIndexedSymbolEntry im;
entry.GetImportIndexedSymbolEntry(j, im);
entry.GetImportIndexedSymbolEntry(process, j, im);
ExportIndexedSymbolEntry ex;
source.GetEntry(im.index, ex);
u32 symbol_address = source.SegmentTagToAddress(ex.symbol_position);
@ -879,7 +884,7 @@ ResultCode CROHelper::ApplyModuleImport(VAddr crs_address) {
ModuleName(), entry.import_anonymous_symbol_num, source.ModuleName());
for (u32 j = 0; j < entry.import_anonymous_symbol_num; ++j) {
ImportAnonymousSymbolEntry im;
entry.GetImportAnonymousSymbolEntry(j, im);
entry.GetImportAnonymousSymbolEntry(process, j, im);
u32 symbol_address = source.SegmentTagToAddress(im.symbol_position);
LOG_TRACE(Service_LDR, " Imports 0x{:08X}", symbol_address);
ResultCode result =
@ -911,7 +916,8 @@ ResultCode CROHelper::ApplyExportNamedSymbol(CROHelper target) {
target.GetEntry(i, entry);
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
Memory::ReadBlock(process, relocation_addr, &relocation_entry,
sizeof(ExternalRelocationEntry));
if (!relocation_entry.is_batch_resolved) {
std::string symbol_name =
@ -941,7 +947,8 @@ ResultCode CROHelper::ResetExportNamedSymbol(CROHelper target) {
target.GetEntry(i, entry);
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
Memory::ReadBlock(process, relocation_addr, &relocation_entry,
sizeof(ExternalRelocationEntry));
if (relocation_entry.is_batch_resolved) {
std::string symbol_name =
@ -976,7 +983,7 @@ ResultCode CROHelper::ApplyModuleExport(CROHelper target) {
entry.import_indexed_symbol_num, target.ModuleName());
for (u32 j = 0; j < entry.import_indexed_symbol_num; ++j) {
ImportIndexedSymbolEntry im;
entry.GetImportIndexedSymbolEntry(j, im);
entry.GetImportIndexedSymbolEntry(process, j, im);
ExportIndexedSymbolEntry ex;
GetEntry(im.index, ex);
u32 symbol_address = SegmentTagToAddress(ex.symbol_position);
@ -993,7 +1000,7 @@ ResultCode CROHelper::ApplyModuleExport(CROHelper target) {
entry.import_anonymous_symbol_num, target.ModuleName());
for (u32 j = 0; j < entry.import_anonymous_symbol_num; ++j) {
ImportAnonymousSymbolEntry im;
entry.GetImportAnonymousSymbolEntry(j, im);
entry.GetImportAnonymousSymbolEntry(process, j, im);
u32 symbol_address = SegmentTagToAddress(im.symbol_position);
LOG_TRACE(Service_LDR, " exports symbol 0x{:08X}", symbol_address);
ResultCode result =
@ -1025,7 +1032,7 @@ ResultCode CROHelper::ResetModuleExport(CROHelper target) {
target.ModuleName());
for (u32 j = 0; j < entry.import_indexed_symbol_num; ++j) {
ImportIndexedSymbolEntry im;
entry.GetImportIndexedSymbolEntry(j, im);
entry.GetImportIndexedSymbolEntry(process, j, im);
ResultCode result =
target.ApplyRelocationBatch(im.relocation_batch_offset, unresolved_symbol, true);
if (result.IsError()) {
@ -1038,7 +1045,7 @@ ResultCode CROHelper::ResetModuleExport(CROHelper target) {
target.ModuleName());
for (u32 j = 0; j < entry.import_anonymous_symbol_num; ++j) {
ImportAnonymousSymbolEntry im;
entry.GetImportAnonymousSymbolEntry(j, im);
entry.GetImportAnonymousSymbolEntry(process, j, im);
ResultCode result =
target.ApplyRelocationBatch(im.relocation_batch_offset, unresolved_symbol, true);
if (result.IsError()) {
@ -1059,11 +1066,12 @@ ResultCode CROHelper::ApplyExitRelocations(VAddr crs_address) {
GetEntry(i, entry);
VAddr relocation_addr = entry.relocation_batch_offset;
ExternalRelocationEntry relocation_entry;
Memory::ReadBlock(relocation_addr, &relocation_entry, sizeof(ExternalRelocationEntry));
Memory::ReadBlock(process, relocation_addr, &relocation_entry,
sizeof(ExternalRelocationEntry));
if (Memory::ReadCString(entry.name_offset, import_strings_size) == "__aeabi_atexit") {
ResultCode result =
ForEachAutoLinkCRO(crs_address, [&](CROHelper source) -> ResultVal<bool> {
ForEachAutoLinkCRO(process, crs_address, [&](CROHelper source) -> ResultVal<bool> {
u32 symbol_address = source.FindExportNamedSymbol("nnroAeabiAtexit_");
if (symbol_address != 0) {
@ -1291,7 +1299,7 @@ ResultCode CROHelper::Link(VAddr crs_address, bool link_on_load_bug_fix) {
}
// Exports symbols to other modules
result = ForEachAutoLinkCRO(crs_address, [this](CROHelper target) -> ResultVal<bool> {
result = ForEachAutoLinkCRO(process, crs_address, [this](CROHelper target) -> ResultVal<bool> {
ResultCode result = ApplyExportNamedSymbol(target);
if (result.IsError())
return result;
@ -1335,7 +1343,7 @@ ResultCode CROHelper::Unlink(VAddr crs_address) {
// Resets all symbols in other modules imported from this module
// Note: the RO service seems only searching in auto-link modules
result = ForEachAutoLinkCRO(crs_address, [this](CROHelper target) -> ResultVal<bool> {
result = ForEachAutoLinkCRO(process, crs_address, [this](CROHelper target) -> ResultVal<bool> {
ResultCode result = ResetExportNamedSymbol(target);
if (result.IsError())
return result;
@ -1375,13 +1383,13 @@ void CROHelper::InitCRS() {
}
void CROHelper::Register(VAddr crs_address, bool auto_link) {
CROHelper crs(crs_address);
CROHelper head(auto_link ? crs.NextModule() : crs.PreviousModule());
CROHelper crs(crs_address, process);
CROHelper head(auto_link ? crs.NextModule() : crs.PreviousModule(), process);
if (head.module_address) {
// there are already CROs registered
// register as the new tail
CROHelper tail(head.PreviousModule());
CROHelper tail(head.PreviousModule(), process);
// link with the old tail
ASSERT(tail.NextModule() == 0);
@ -1407,9 +1415,9 @@ void CROHelper::Register(VAddr crs_address, bool auto_link) {
}
void CROHelper::Unregister(VAddr crs_address) {
CROHelper crs(crs_address);
CROHelper next_head(crs.NextModule()), previous_head(crs.PreviousModule());
CROHelper next(NextModule()), previous(PreviousModule());
CROHelper crs(crs_address, process);
CROHelper next_head(crs.NextModule(), process), previous_head(crs.PreviousModule(), process);
CROHelper next(NextModule(), process), previous(PreviousModule(), process);
if (module_address == next_head.module_address ||
module_address == previous_head.module_address) {

31
src/core/hle/service/ldr_ro/cro_helper.h
View file

@ -11,6 +11,10 @@
#include "core/hle/result.h"
#include "core/memory.h"
namespace Kernel {
class Process;
}
namespace Service::LDR {
// GCC versions < 5.0 do not implement std::is_trivially_copyable.
@ -36,7 +40,8 @@ static constexpr u32 CRO_HASH_SIZE = 0x80;
class CROHelper final {
public:
// TODO (wwylele): pass in the process handle for memory access
explicit CROHelper(VAddr cro_address) : module_address(cro_address) {}
explicit CROHelper(VAddr cro_address, Kernel::Process& process)
: module_address(cro_address), process(process) {}
std::string ModuleName() const {
return Memory::ReadCString(GetField(ModuleNameOffset), GetField(ModuleNameSize));
@ -144,6 +149,7 @@ public:
private:
const VAddr module_address; ///< the virtual address of this module
Kernel::Process& process; ///< the owner process of this module
/**
* Each item in this enum represents a u32 field in the header begin from address+0x80,
@ -311,14 +317,18 @@ private:
static constexpr HeaderField TABLE_OFFSET_FIELD = ImportModuleTableOffset;
void GetImportIndexedSymbolEntry(u32 index, ImportIndexedSymbolEntry& entry) {
Memory::ReadBlock(import_indexed_symbol_table_offset +
void GetImportIndexedSymbolEntry(Kernel::Process& process, u32 index,
ImportIndexedSymbolEntry& entry) {
Memory::ReadBlock(process,
import_indexed_symbol_table_offset +
index * sizeof(ImportIndexedSymbolEntry),
&entry, sizeof(ImportIndexedSymbolEntry));
}
void GetImportAnonymousSymbolEntry(u32 index, ImportAnonymousSymbolEntry& entry) {
Memory::ReadBlock(import_anonymous_symbol_table_offset +
void GetImportAnonymousSymbolEntry(Kernel::Process& process, u32 index,
ImportAnonymousSymbolEntry& entry) {
Memory::ReadBlock(process,
import_anonymous_symbol_table_offset +
index * sizeof(ImportAnonymousSymbolEntry),
&entry, sizeof(ImportAnonymousSymbolEntry));
}
@ -413,7 +423,8 @@ private:
*/
template <typename T>
void GetEntry(std::size_t index, T& data) const {
Memory::ReadBlock(GetField(T::TABLE_OFFSET_FIELD) + static_cast<u32>(index * sizeof(T)),
Memory::ReadBlock(process,
GetField(T::TABLE_OFFSET_FIELD) + static_cast<u32>(index * sizeof(T)),
&data, sizeof(T));
}
@ -426,7 +437,8 @@ private:
*/
template <typename T>
void SetEntry(std::size_t index, const T& data) {
Memory::WriteBlock(GetField(T::TABLE_OFFSET_FIELD) + static_cast<u32>(index * sizeof(T)),
Memory::WriteBlock(process,
GetField(T::TABLE_OFFSET_FIELD) + static_cast<u32>(index * sizeof(T)),
&data, sizeof(T));
}
@ -466,10 +478,11 @@ private:
* otherwise error code of the last iteration.
*/
template <typename FunctionObject>
static ResultCode ForEachAutoLinkCRO(VAddr crs_address, FunctionObject func) {
static ResultCode ForEachAutoLinkCRO(Kernel::Process& process, VAddr crs_address,
FunctionObject func) {
VAddr current = crs_address;
while (current != 0) {
CROHelper cro(current);
CROHelper cro(current, process);
CASCADE_RESULT(bool next, func(cro));
if (!next)
break;

12
src/core/hle/service/ldr_ro/ldr_ro.cpp
View file

@ -115,7 +115,7 @@ void RO::Initialize(Kernel::HLERequestContext& ctx) {
return;
}
CROHelper crs(crs_address);
CROHelper crs(crs_address, *process);
crs.InitCRS();
result = crs.Rebase(0, crs_size, 0, 0, 0, 0, true);
@ -249,7 +249,7 @@ void RO::LoadCRO(Kernel::HLERequestContext& ctx, bool link_on_load_bug_fix) {
return;
}
CROHelper cro(cro_address);
CROHelper cro(cro_address, *process);
result = cro.VerifyHash(cro_size, crr_address);
if (result.IsError()) {
@ -331,7 +331,7 @@ void RO::UnloadCRO(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_LDR, "called, cro_address=0x{:08X}, zero={}, cro_buffer_ptr=0x{:08X}",
cro_address, zero, cro_buffer_ptr);
CROHelper cro(cro_address);
CROHelper cro(cro_address, *process);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
@ -398,7 +398,7 @@ void RO::LinkCRO(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_LDR, "called, cro_address=0x{:08X}", cro_address);
CROHelper cro(cro_address);
CROHelper cro(cro_address, *process);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
@ -438,7 +438,7 @@ void RO::UnlinkCRO(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_LDR, "called, cro_address=0x{:08X}", cro_address);
CROHelper cro(cro_address);
CROHelper cro(cro_address, *process);
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
@ -487,7 +487,7 @@ void RO::Shutdown(Kernel::HLERequestContext& ctx) {
return;
}
CROHelper crs(slot->loaded_crs);
CROHelper crs(slot->loaded_crs, *process);
crs.Unrebase(true);
ResultCode result = RESULT_SUCCESS;

103
src/core/memory.cpp
View file

@ -79,39 +79,24 @@ void UnmapRegion(PageTable& page_table, VAddr base, u32 size) {
}
/**
* Gets a pointer to the exact memory at the virtual address (i.e. not page aligned)
* using a VMA from the current process
* Gets the pointer for virtual memory where the page is marked as RasterizerCachedMemory.
* This is used to access the memory where the page pointer is nullptr due to rasterizer cache.
* Since the cache only happens on linear heap or VRAM, we know the exact physical address and
* pointer of such virtual address
*/
static u8* GetPointerFromVMA(const Kernel::Process& process, VAddr vaddr) {
u8* direct_pointer = nullptr;
auto& vm_manager = process.vm_manager;
auto it = vm_manager.FindVMA(vaddr);
ASSERT(it != vm_manager.vma_map.end());
auto& vma = it->second;
switch (vma.type) {
case Kernel::VMAType::BackingMemory:
direct_pointer = vma.backing_memory;
break;
case Kernel::VMAType::Free:
return nullptr;
default:
static u8* GetPointerForRasterizerCache(VAddr addr) {
if (addr >= LINEAR_HEAP_VADDR && addr < LINEAR_HEAP_VADDR_END) {
return fcram.data() + (addr - LINEAR_HEAP_VADDR);
}
if (addr >= NEW_LINEAR_HEAP_VADDR && addr < NEW_LINEAR_HEAP_VADDR_END) {
return fcram.data() + (addr - NEW_LINEAR_HEAP_VADDR);
}
if (addr >= VRAM_VADDR && addr < VRAM_VADDR_END) {
return vram.data() + (addr - VRAM_VADDR);
}
UNREACHABLE();
}
return direct_pointer + (vaddr - vma.base);
}
/**
* Gets a pointer to the exact memory at the virtual address (i.e. not page aligned)
* using a VMA from the current process.
*/
static u8* GetPointerFromVMA(VAddr vaddr) {
return GetPointerFromVMA(*Core::System::GetInstance().Kernel().GetCurrentProcess(), vaddr);
}
/**
* This function should only be called for virtual addreses with attribute `PageType::Special`.
*/
@ -125,12 +110,6 @@ static MMIORegionPointer GetMMIOHandler(const PageTable& page_table, VAddr vaddr
return nullptr; // Should never happen
}
static MMIORegionPointer GetMMIOHandler(VAddr vaddr) {
const PageTable& page_table =
Core::System::GetInstance().Kernel().GetCurrentProcess()->vm_manager.page_table;
return GetMMIOHandler(page_table, vaddr);
}
template <typename T>
T ReadMMIO(MMIORegionPointer mmio_handler, VAddr addr);
@ -159,11 +138,11 @@ T Read(const VAddr vaddr) {
RasterizerFlushVirtualRegion(vaddr, sizeof(T), FlushMode::Flush);
T value;
std::memcpy(&value, GetPointerFromVMA(vaddr), sizeof(T));
std::memcpy(&value, GetPointerForRasterizerCache(vaddr), sizeof(T));
return value;
}
case PageType::Special:
return ReadMMIO<T>(GetMMIOHandler(vaddr), vaddr);
return ReadMMIO<T>(GetMMIOHandler(*current_page_table, vaddr), vaddr);
default:
UNREACHABLE();
}
@ -195,11 +174,11 @@ void Write(const VAddr vaddr, const T data) {
break;
case PageType::RasterizerCachedMemory: {
RasterizerFlushVirtualRegion(vaddr, sizeof(T), FlushMode::Invalidate);
std::memcpy(GetPointerFromVMA(vaddr), &data, sizeof(T));
std::memcpy(GetPointerForRasterizerCache(vaddr), &data, sizeof(T));
break;
}
case PageType::Special:
WriteMMIO<T>(GetMMIOHandler(vaddr), vaddr, data);
WriteMMIO<T>(GetMMIOHandler(*current_page_table, vaddr), vaddr, data);
break;
default:
UNREACHABLE();
@ -227,10 +206,6 @@ bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) {
return false;
}
bool IsValidVirtualAddress(const VAddr vaddr) {
return IsValidVirtualAddress(*Core::System::GetInstance().Kernel().GetCurrentProcess(), vaddr);
}
bool IsValidPhysicalAddress(const PAddr paddr) {
return GetPhysicalPointer(paddr) != nullptr;
}
@ -242,7 +217,7 @@ u8* GetPointer(const VAddr vaddr) {
}
if (current_page_table->attributes[vaddr >> PAGE_BITS] == PageType::RasterizerCachedMemory) {
return GetPointerFromVMA(vaddr);
return GetPointerForRasterizerCache(vaddr);
}
LOG_ERROR(HW_Memory, "unknown GetPointer @ 0x{:08x}", vaddr);
@ -364,16 +339,9 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, bool cached) {
// space, for example, a system module need not have a VRAM mapping.
break;
case PageType::RasterizerCachedMemory: {
u8* pointer = GetPointerFromVMA(vaddr & ~PAGE_MASK);
if (pointer == nullptr) {
// It's possible that this function has been called while updating the
// pagetable after unmapping a VMA. In that case the underlying VMA will no
// longer exist, and we should just leave the pagetable entry blank.
page_type = PageType::Unmapped;
} else {
page_type = PageType::Memory;
current_page_table->pointers[vaddr >> PAGE_BITS] = pointer;
}
current_page_table->pointers[vaddr >> PAGE_BITS] =
GetPointerForRasterizerCache(vaddr & ~PAGE_MASK);
break;
}
default:
@ -501,7 +469,7 @@ void ReadBlock(const Kernel::Process& process, const VAddr src_addr, void* dest_
case PageType::RasterizerCachedMemory: {
RasterizerFlushVirtualRegion(current_vaddr, static_cast<u32>(copy_amount),
FlushMode::Flush);
std::memcpy(dest_buffer, GetPointerFromVMA(process, current_vaddr), copy_amount);
std::memcpy(dest_buffer, GetPointerForRasterizerCache(current_vaddr), copy_amount);
break;
}
default:
@ -515,11 +483,6 @@ void ReadBlock(const Kernel::Process& process, const VAddr src_addr, void* dest_
}
}
void ReadBlock(const VAddr src_addr, void* dest_buffer, const std::size_t size) {
ReadBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), src_addr, dest_buffer,
size);
}
void Write8(const VAddr addr, const u8 data) {
Write<u8>(addr, data);
}
@ -570,7 +533,7 @@ void WriteBlock(const Kernel::Process& process, const VAddr dest_addr, const voi
case PageType::RasterizerCachedMemory: {
RasterizerFlushVirtualRegion(current_vaddr, static_cast<u32>(copy_amount),
FlushMode::Invalidate);
std::memcpy(GetPointerFromVMA(process, current_vaddr), src_buffer, copy_amount);
std::memcpy(GetPointerForRasterizerCache(current_vaddr), src_buffer, copy_amount);
break;
}
default:
@ -584,11 +547,6 @@ void WriteBlock(const Kernel::Process& process, const VAddr dest_addr, const voi
}
}
void WriteBlock(const VAddr dest_addr, const void* src_buffer, const std::size_t size) {
WriteBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), dest_addr, src_buffer,
size);
}
void ZeroBlock(const Kernel::Process& process, const VAddr dest_addr, const std::size_t size) {
auto& page_table = process.vm_manager.page_table;
std::size_t remaining_size = size;
@ -624,7 +582,7 @@ void ZeroBlock(const Kernel::Process& process, const VAddr dest_addr, const std:
case PageType::RasterizerCachedMemory: {
RasterizerFlushVirtualRegion(current_vaddr, static_cast<u32>(copy_amount),
FlushMode::Invalidate);
std::memset(GetPointerFromVMA(process, current_vaddr), 0, copy_amount);
std::memset(GetPointerForRasterizerCache(current_vaddr), 0, copy_amount);
break;
}
default:
@ -637,10 +595,6 @@ void ZeroBlock(const Kernel::Process& process, const VAddr dest_addr, const std:
}
}
void ZeroBlock(const VAddr dest_addr, const std::size_t size) {
ZeroBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), dest_addr, size);
}
void CopyBlock(const Kernel::Process& process, VAddr dest_addr, VAddr src_addr,
const std::size_t size) {
auto& page_table = process.vm_manager.page_table;
@ -677,7 +631,8 @@ void CopyBlock(const Kernel::Process& process, VAddr dest_addr, VAddr src_addr,
case PageType::RasterizerCachedMemory: {
RasterizerFlushVirtualRegion(current_vaddr, static_cast<u32>(copy_amount),
FlushMode::Flush);
WriteBlock(process, dest_addr, GetPointerFromVMA(process, current_vaddr), copy_amount);
WriteBlock(process, dest_addr, GetPointerForRasterizerCache(current_vaddr),
copy_amount);
break;
}
default:
@ -692,10 +647,6 @@ void CopyBlock(const Kernel::Process& process, VAddr dest_addr, VAddr src_addr,
}
}
void CopyBlock(VAddr dest_addr, VAddr src_addr, const std::size_t size) {
CopyBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), dest_addr, src_addr, size);
}
void CopyBlock(const Kernel::Process& src_process, const Kernel::Process& dest_process,
VAddr src_addr, VAddr dest_addr, std::size_t size) {
auto& page_table = src_process.vm_manager.page_table;
@ -732,7 +683,7 @@ void CopyBlock(const Kernel::Process& src_process, const Kernel::Process& dest_p
case PageType::RasterizerCachedMemory: {
RasterizerFlushVirtualRegion(current_vaddr, static_cast<u32>(copy_amount),
FlushMode::Flush);
WriteBlock(dest_process, dest_addr, GetPointerFromVMA(src_process, current_vaddr),
WriteBlock(dest_process, dest_addr, GetPointerForRasterizerCache(current_vaddr),
copy_amount);
break;
}

5
src/core/memory.h
View file

@ -186,7 +186,6 @@ PageTable* GetCurrentPageTable();
/// Determines if the given VAddr is valid for the specified process.
bool IsValidVirtualAddress(const Kernel::Process& process, VAddr vaddr);
bool IsValidVirtualAddress(VAddr vaddr);
bool IsValidPhysicalAddress(PAddr paddr);
@ -201,14 +200,10 @@ void Write32(VAddr addr, u32 data);
void Write64(VAddr addr, u64 data);
void ReadBlock(const Kernel::Process& process, VAddr src_addr, void* dest_buffer, std::size_t size);
void ReadBlock(VAddr src_addr, void* dest_buffer, std::size_t size);
void WriteBlock(const Kernel::Process& process, VAddr dest_addr, const void* src_buffer,
std::size_t size);
void WriteBlock(VAddr dest_addr, const void* src_buffer, std::size_t size);
void ZeroBlock(const Kernel::Process& process, VAddr dest_addr, const std::size_t size);
void ZeroBlock(VAddr dest_addr, const std::size_t size);
void CopyBlock(const Kernel::Process& process, VAddr dest_addr, VAddr src_addr, std::size_t size);
void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size);
void CopyBlock(const Kernel::Process& src_process, const Kernel::Process& dest_process,
VAddr src_addr, VAddr dest_addr, std::size_t size);

7
src/core/rpc/rpc_server.cpp
View file

@ -1,6 +1,7 @@
#include "common/logging/log.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/hle/kernel/process.h"
#include "core/memory.h"
#include "core/rpc/packet.h"
#include "core/rpc/rpc_server.h"
@ -29,7 +30,8 @@ void RPCServer::HandleReadMemory(Packet& packet, u32 address, u32 data_size) {
}
// Note: Memory read occurs asynchronously from the state of the emulator
Memory::ReadBlock(address, packet.GetPacketData().data(), data_size);
Memory::ReadBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), address,
packet.GetPacketData().data(), data_size);
packet.SetPacketDataSize(data_size);
packet.SendReply();
}
@ -40,7 +42,8 @@ void RPCServer::HandleWriteMemory(Packet& packet, u32 address, const u8* data, u
(address >= Memory::HEAP_VADDR && address <= Memory::HEAP_VADDR_END) ||
(address >= Memory::N3DS_EXTRA_RAM_VADDR && address <= Memory::N3DS_EXTRA_RAM_VADDR_END)) {
// Note: Memory write occurs asynchronously from the state of the emulator
Memory::WriteBlock(address, data, data_size);
Memory::WriteBlock(*Core::System::GetInstance().Kernel().GetCurrentProcess(), address, data,
data_size);
// If the memory happens to be executable code, make sure the changes become visible
Core::CPU().InvalidateCacheRange(address, data_size);
}