yuzu-emu
/
yuzu-android
Archived
1
0
Fork 0
Code

jit: use code memory handles correctly

This commit is contained in:
Liam 2023-12-29 01:00:03 -05:00
parent 12178c694a
commit 558192abf4
4 changed files with 146 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/core/CMakeLists.txt
View File

@ -987,6 +987,8 @@ if (ARCHITECTURE_x86_64 OR ARCHITECTURE_arm64)
arm/dynarmic/dynarmic_cp15.h
arm/dynarmic/dynarmic_exclusive_monitor.cpp
arm/dynarmic/dynarmic_exclusive_monitor.h
hle/service/jit/jit_code_memory.cpp
hle/service/jit/jit_code_memory.h
hle/service/jit/jit_context.cpp
hle/service/jit/jit_context.h
hle/service/jit/jit.cpp

59
src/core/hle/service/jit/jit.cpp
View File

@ -4,11 +4,11 @@
#include "core/arm/debug.h"
#include "core/arm/symbols.h"
#include "core/core.h"
#include "core/hle/kernel/k_code_memory.h"
#include "core/hle/kernel/k_transfer_memory.h"
#include "core/hle/result.h"
#include "core/hle/service/ipc_helpers.h"
#include "core/hle/service/jit/jit.h"
#include "core/hle/service/jit/jit_code_memory.h"
#include "core/hle/service/jit/jit_context.h"
#include "core/hle/service/server_manager.h"
#include "core/hle/service/service.h"
@ -23,10 +23,12 @@ struct CodeRange {
class IJitEnvironment final : public ServiceFramework<IJitEnvironment> {
public:
explicit IJitEnvironment(Core::System& system_, Kernel::KProcess& process_, CodeRange user_rx,
CodeRange user_ro)
: ServiceFramework{system_, "IJitEnvironment"}, process{&process_},
context{process->GetMemory()} {
explicit IJitEnvironment(Core::System& system_,
Kernel::KScopedAutoObject<Kernel::KProcess>&& process_,
CodeMemory&& user_rx_, CodeMemory&& user_ro_)
: ServiceFramework{system_, "IJitEnvironment"}, process{std::move(process_)},
user_rx{std::move(user_rx_)}, user_ro{std::move(user_ro_)},
context{system_.ApplicationMemory()} {
// clang-format off
static const FunctionInfo functions[] = {
{0, &IJitEnvironment::GenerateCode, "GenerateCode"},
@ -39,10 +41,13 @@ public:
RegisterHandlers(functions);
// Identity map user code range into sysmodule context
configuration.user_ro_memory = user_ro;
configuration.user_rx_memory = user_rx;
configuration.sys_ro_memory = user_ro;
configuration.sys_rx_memory = user_rx;
configuration.user_rx_memory.size = user_rx.GetSize();
configuration.user_rx_memory.offset = user_rx.GetAddress();
configuration.user_ro_memory.size = user_ro.GetSize();
configuration.user_ro_memory.offset = user_ro.GetAddress();
configuration.sys_rx_memory = configuration.user_rx_memory;
configuration.sys_ro_memory = configuration.user_ro_memory;
}
void GenerateCode(HLERequestContext& ctx) {
@ -318,6 +323,8 @@ private:
}
Kernel::KScopedAutoObject<Kernel::KProcess> process;
CodeMemory user_rx;
CodeMemory user_ro;
GuestCallbacks callbacks;
JITConfiguration configuration;
JITContext context;
@ -335,6 +342,7 @@ public:
RegisterHandlers(functions);
}
private:
void CreateJitEnvironment(HLERequestContext& ctx) {
LOG_DEBUG(Service_JIT, "called");
@ -380,20 +388,35 @@ public:
return;
}
const CodeRange user_rx{
.offset = GetInteger(rx_mem->GetSourceAddress()),
.size = parameters.rx_size,
};
CodeMemory rx, ro;
Result res;
const CodeRange user_ro{
.offset = GetInteger(ro_mem->GetSourceAddress()),
.size = parameters.ro_size,
};
res = rx.Initialize(*process, *rx_mem, parameters.rx_size,
Kernel::Svc::MemoryPermission::ReadExecute, generate_random);
if (R_FAILED(res)) {
LOG_ERROR(Service_JIT, "rx_mem could not be mapped for handle=0x{:08X}", rx_mem_handle);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(res);
return;
}
res = ro.Initialize(*process, *ro_mem, parameters.ro_size,
Kernel::Svc::MemoryPermission::Read, generate_random);
if (R_FAILED(res)) {
LOG_ERROR(Service_JIT, "ro_mem could not be mapped for handle=0x{:08X}", ro_mem_handle);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(res);
return;
}
IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(ResultSuccess);
rb.PushIpcInterface<IJitEnvironment>(system, *process, user_rx, user_ro);
rb.PushIpcInterface<IJitEnvironment>(system, std::move(process), std::move(rx),
std::move(ro));
}
private:
std::mt19937_64 generate_random{};
};
void LoopProcess(Core::System& system) {

54
src/core/hle/service/jit/jit_code_memory.cpp Normal file
View File

@ -0,0 +1,54 @@
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/service/jit/jit_code_memory.h"
namespace Service::JIT {
Result CodeMemory::Initialize(Kernel::KProcess& process, Kernel::KCodeMemory& code_memory,
size_t size, Kernel::Svc::MemoryPermission perm,
std::mt19937_64& generate_random) {
auto& page_table = process.GetPageTable();
const u64 alias_code_start =
GetInteger(page_table.GetAliasCodeRegionStart()) / Kernel::PageSize;
const u64 alias_code_size = page_table.GetAliasCodeRegionSize() / Kernel::PageSize;
// NOTE: This will retry indefinitely until mapping the code memory succeeds.
while (true) {
// Generate a new trial address.
const u64 mapped_address =
(alias_code_start + (generate_random() % alias_code_size)) * Kernel::PageSize;
// Try to map the address
R_TRY_CATCH(code_memory.MapToOwner(mapped_address, size, perm)) {
R_CATCH(Kernel::ResultInvalidMemoryRegion) {
// If we could not map here, retry.
continue;
}
}
R_END_TRY_CATCH;
// Set members.
m_code_memory = std::addressof(code_memory);
m_size = size;
m_address = mapped_address;
m_perm = perm;
// Open a new reference to the code memory.
m_code_memory->Open();
// We succeeded.
R_SUCCEED();
}
}
void CodeMemory::Finalize() {
if (m_code_memory) {
R_ASSERT(m_code_memory->UnmapFromOwner(m_address, m_size));
m_code_memory->Close();
}
m_code_memory = nullptr;
}
} // namespace Service::JIT

49
src/core/hle/service/jit/jit_code_memory.h Normal file
View File

@ -0,0 +1,49 @@
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <random>
#include "core/hle/kernel/k_code_memory.h"
namespace Service::JIT {
class CodeMemory {
public:
YUZU_NON_COPYABLE(CodeMemory);
explicit CodeMemory() = default;
CodeMemory(CodeMemory&& rhs) {
std::swap(m_code_memory, rhs.m_code_memory);
std::swap(m_size, rhs.m_size);
std::swap(m_address, rhs.m_address);
std::swap(m_perm, rhs.m_perm);
}
~CodeMemory() {
this->Finalize();
}
public:
Result Initialize(Kernel::KProcess& process, Kernel::KCodeMemory& code_memory, size_t size,
Kernel::Svc::MemoryPermission perm, std::mt19937_64& generate_random);
void Finalize();
size_t GetSize() const {
return m_size;
}
u64 GetAddress() const {
return m_address;
}
private:
Kernel::KCodeMemory* m_code_memory{};
size_t m_size{};
u64 m_address{};
Kernel::Svc::MemoryPermission m_perm{};
};
} // namespace Service::JIT