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-rw-r--r--src/core/hle/service/jit/jit.cpp59
-rw-r--r--src/core/hle/service/jit/jit_code_memory.cpp54
-rw-r--r--src/core/hle/service/jit/jit_code_memory.h49
3 files changed, 144 insertions, 18 deletions
diff --git a/src/core/hle/service/jit/jit.cpp b/src/core/hle/service/jit/jit.cpp
index a94d05e19..77aa6d7d1 100644
--- a/src/core/hle/service/jit/jit.cpp
+++ b/src/core/hle/service/jit/jit.cpp
@@ -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) {
diff --git a/src/core/hle/service/jit/jit_code_memory.cpp b/src/core/hle/service/jit/jit_code_memory.cpp
new file mode 100644
index 000000000..2b480488a
--- /dev/null
+++ b/src/core/hle/service/jit/jit_code_memory.cpp
@@ -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
diff --git a/src/core/hle/service/jit/jit_code_memory.h b/src/core/hle/service/jit/jit_code_memory.h
new file mode 100644
index 000000000..6376d4c4e
--- /dev/null
+++ b/src/core/hle/service/jit/jit_code_memory.h
@@ -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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 13:12:33 +0100