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-rw-r--r--src/core/CMakeLists.txt2
-rw-r--r--src/core/hle/kernel/k_code_memory.cpp11
-rw-r--r--src/core/hle/service/jit/jit.cpp291
-rw-r--r--src/core/hle/service/jit/jit_context.cpp424
-rw-r--r--src/core/hle/service/jit/jit_context.h65
5 files changed, 784 insertions, 9 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index ffbda7925..b681d21a7 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -460,6 +460,8 @@ add_library(core STATIC
hle/service/hid/controllers/touchscreen.h
hle/service/hid/controllers/xpad.cpp
hle/service/hid/controllers/xpad.h
+ hle/service/jit/jit_context.cpp
+ hle/service/jit/jit_context.h
hle/service/jit/jit.cpp
hle/service/jit/jit.h
hle/service/lbl/lbl.cpp
diff --git a/src/core/hle/kernel/k_code_memory.cpp b/src/core/hle/kernel/k_code_memory.cpp
index 63bbe02e9..09eaf004c 100644
--- a/src/core/hle/kernel/k_code_memory.cpp
+++ b/src/core/hle/kernel/k_code_memory.cpp
@@ -35,9 +35,14 @@ ResultCode KCodeMemory::Initialize(Core::DeviceMemory& device_memory, VAddr addr
R_TRY(page_table.LockForCodeMemory(addr, size))
// Clear the memory.
- for (const auto& block : m_page_group.Nodes()) {
- std::memset(device_memory.GetPointer(block.GetAddress()), 0xFF, block.GetSize());
- }
+ //
+ // FIXME: this ends up clobbering address ranges outside the scope of the mapping within
+ // guest memory, and is not specifically required if the guest program is correctly
+ // written, so disable until this is further investigated.
+ //
+ // for (const auto& block : m_page_group.Nodes()) {
+ // std::memset(device_memory.GetPointer(block.GetAddress()), 0xFF, block.GetSize());
+ // }
// Set remaining tracking members.
m_address = addr;
diff --git a/src/core/hle/service/jit/jit.cpp b/src/core/hle/service/jit/jit.cpp
index c8ebd2e3f..0f9e33ef6 100644
--- a/src/core/hle/service/jit/jit.cpp
+++ b/src/core/hle/service/jit/jit.cpp
@@ -2,27 +2,256 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
+#include "core/arm/symbols.h"
+#include "core/core.h"
#include "core/hle/ipc_helpers.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/jit/jit.h"
+#include "core/hle/service/jit/jit_context.h"
#include "core/hle/service/service.h"
+#include "core/memory.h"
namespace Service::JIT {
+struct CodeRange {
+ u64 offset;
+ u64 size;
+};
+
class IJitEnvironment final : public ServiceFramework<IJitEnvironment> {
public:
- explicit IJitEnvironment(Core::System& system_) : ServiceFramework{system_, "IJitEnvironment"} {
+ explicit IJitEnvironment(Core::System& system_, CodeRange user_rx, CodeRange user_ro)
+ : ServiceFramework{system_, "IJitEnvironment", ServiceThreadType::CreateNew},
+ context{system_.Memory()} {
// clang-format off
static const FunctionInfo functions[] = {
- {0, nullptr, "GenerateCode"},
- {1, nullptr, "Control"},
- {1000, nullptr, "LoadPlugin"},
- {1001, nullptr, "GetCodeAddress"},
+ {0, &IJitEnvironment::GenerateCode, "GenerateCode"},
+ {1, &IJitEnvironment::Control, "Control"},
+ {1000, &IJitEnvironment::LoadPlugin, "LoadPlugin"},
+ {1001, &IJitEnvironment::GetCodeAddress, "GetCodeAddress"},
};
// clang-format on
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;
}
+
+ void GenerateCode(Kernel::HLERequestContext& ctx) {
+ struct Parameters {
+ u32 data_size;
+ u64 command;
+ CodeRange cr1;
+ CodeRange cr2;
+ Struct32 data;
+ };
+
+ IPC::RequestParser rp{ctx};
+ const auto parameters{rp.PopRaw<Parameters>()};
+ std::vector<u8> input_buffer{ctx.CanReadBuffer() ? ctx.ReadBuffer() : std::vector<u8>()};
+ std::vector<u8> output_buffer(ctx.CanWriteBuffer() ? ctx.GetWriteBufferSize() : 0);
+
+ const VAddr return_ptr{context.AddHeap(0u)};
+ const VAddr cr1_in_ptr{context.AddHeap(parameters.cr1)};
+ const VAddr cr2_in_ptr{context.AddHeap(parameters.cr2)};
+ const VAddr cr1_out_ptr{
+ context.AddHeap(CodeRange{.offset = parameters.cr1.offset, .size = 0})};
+ const VAddr cr2_out_ptr{
+ context.AddHeap(CodeRange{.offset = parameters.cr2.offset, .size = 0})};
+ const VAddr input_ptr{context.AddHeap(input_buffer.data(), input_buffer.size())};
+ const VAddr output_ptr{context.AddHeap(output_buffer.data(), output_buffer.size())};
+ const VAddr data_ptr{context.AddHeap(parameters.data)};
+ const VAddr configuration_ptr{context.AddHeap(configuration)};
+
+ context.CallFunction(callbacks.GenerateCode, return_ptr, cr1_out_ptr, cr2_out_ptr,
+ configuration_ptr, parameters.command, input_ptr, input_buffer.size(),
+ cr1_in_ptr, cr2_in_ptr, data_ptr, parameters.data_size, output_ptr,
+ output_buffer.size());
+
+ const s32 return_value{context.GetHeap<s32>(return_ptr)};
+
+ if (return_value == 0) {
+ system.InvalidateCpuInstructionCacheRange(configuration.user_rx_memory.offset,
+ configuration.user_rx_memory.size);
+
+ if (ctx.CanWriteBuffer()) {
+ context.GetHeap(output_ptr, output_buffer.data(), output_buffer.size());
+ ctx.WriteBuffer(output_buffer.data(), output_buffer.size());
+ }
+ const auto cr1_out{context.GetHeap<CodeRange>(cr1_out_ptr)};
+ const auto cr2_out{context.GetHeap<CodeRange>(cr2_out_ptr)};
+
+ IPC::ResponseBuilder rb{ctx, 8};
+ rb.Push(ResultSuccess);
+ rb.Push<u64>(return_value);
+ rb.PushRaw(cr1_out);
+ rb.PushRaw(cr2_out);
+ } else {
+ LOG_WARNING(Service_JIT, "plugin GenerateCode callback failed");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ }
+ };
+
+ void Control(Kernel::HLERequestContext& ctx) {
+ IPC::RequestParser rp{ctx};
+ const auto command{rp.PopRaw<u64>()};
+ const auto input_buffer{ctx.ReadBuffer()};
+ std::vector<u8> output_buffer(ctx.CanWriteBuffer() ? ctx.GetWriteBufferSize() : 0);
+
+ const VAddr return_ptr{context.AddHeap(0u)};
+ const VAddr configuration_ptr{context.AddHeap(configuration)};
+ const VAddr input_ptr{context.AddHeap(input_buffer.data(), input_buffer.size())};
+ const VAddr output_ptr{context.AddHeap(output_buffer.data(), output_buffer.size())};
+ const u64 wrapper_value{
+ context.CallFunction(callbacks.Control, return_ptr, configuration_ptr, command,
+ input_ptr, input_buffer.size(), output_ptr, output_buffer.size())};
+ const s32 return_value{context.GetHeap<s32>(return_ptr)};
+
+ if (wrapper_value == 0 && return_value == 0) {
+ if (ctx.CanWriteBuffer()) {
+ context.GetHeap(output_ptr, output_buffer.data(), output_buffer.size());
+ ctx.WriteBuffer(output_buffer.data(), output_buffer.size());
+ }
+ IPC::ResponseBuilder rb{ctx, 3};
+ rb.Push(ResultSuccess);
+ rb.Push(return_value);
+ } else {
+ LOG_WARNING(Service_JIT, "plugin Control callback failed");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ }
+ }
+
+ void LoadPlugin(Kernel::HLERequestContext& ctx) {
+ IPC::RequestParser rp{ctx};
+ const auto tmem_size{rp.PopRaw<u64>()};
+ if (tmem_size == 0) {
+ LOG_ERROR(Service_JIT, "attempted to load plugin with empty transfer memory");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ const auto tmem_handle{ctx.GetCopyHandle(0)};
+ auto tmem{system.CurrentProcess()->GetHandleTable().GetObject<Kernel::KTransferMemory>(
+ tmem_handle)};
+ if (tmem.IsNull()) {
+ LOG_ERROR(Service_JIT, "attempted to load plugin with invalid transfer memory handle");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ configuration.work_memory.offset = tmem->GetSourceAddress();
+ configuration.work_memory.size = tmem_size;
+
+ const auto nro_plugin{ctx.ReadBuffer(1)};
+ auto symbols{Core::Symbols::GetSymbols(nro_plugin, true)};
+ const auto GetSymbol{[&](std::string name) { return symbols[name].first; }};
+
+ callbacks =
+ GuestCallbacks{.rtld_fini = GetSymbol("_fini"),
+ .rtld_init = GetSymbol("_init"),
+ .Control = GetSymbol("nnjitpluginControl"),
+ .ResolveBasicSymbols = GetSymbol("nnjitpluginResolveBasicSymbols"),
+ .SetupDiagnostics = GetSymbol("nnjitpluginSetupDiagnostics"),
+ .Configure = GetSymbol("nnjitpluginConfigure"),
+ .GenerateCode = GetSymbol("nnjitpluginGenerateCode"),
+ .GetVersion = GetSymbol("nnjitpluginGetVersion"),
+ .Keeper = GetSymbol("nnjitpluginKeeper"),
+ .OnPrepared = GetSymbol("nnjitpluginOnPrepared")};
+
+ if (callbacks.GetVersion == 0 || callbacks.Configure == 0 || callbacks.GenerateCode == 0 ||
+ callbacks.OnPrepared == 0) {
+ LOG_ERROR(Service_JIT, "plugin does not implement all necessary functionality");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ if (!context.LoadNRO(nro_plugin)) {
+ LOG_ERROR(Service_JIT, "failed to load plugin");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ context.MapProcessMemory(configuration.sys_ro_memory.offset,
+ configuration.sys_ro_memory.size);
+ context.MapProcessMemory(configuration.sys_rx_memory.offset,
+ configuration.sys_rx_memory.size);
+ context.MapProcessMemory(configuration.work_memory.offset, configuration.work_memory.size);
+
+ if (callbacks.rtld_init != 0) {
+ context.CallFunction(callbacks.rtld_init);
+ }
+
+ const auto version{context.CallFunction(callbacks.GetVersion)};
+ if (version != 1) {
+ LOG_ERROR(Service_JIT, "unknown plugin version {}", version);
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ const auto resolve{context.GetHelper("_resolve")};
+ if (callbacks.ResolveBasicSymbols != 0) {
+ context.CallFunction(callbacks.ResolveBasicSymbols, resolve);
+ }
+ const auto resolve_ptr{context.AddHeap(resolve)};
+ if (callbacks.SetupDiagnostics != 0) {
+ context.CallFunction(callbacks.SetupDiagnostics, 0u, resolve_ptr);
+ }
+
+ context.CallFunction(callbacks.Configure, 0u);
+ const auto configuration_ptr{context.AddHeap(configuration)};
+ context.CallFunction(callbacks.OnPrepared, configuration_ptr);
+
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultSuccess);
+ }
+
+ void GetCodeAddress(Kernel::HLERequestContext& ctx) {
+ IPC::ResponseBuilder rb{ctx, 6};
+ rb.Push(ResultSuccess);
+ rb.Push(configuration.user_rx_memory.offset);
+ rb.Push(configuration.user_ro_memory.offset);
+ }
+
+private:
+ using Struct32 = std::array<u8, 32>;
+
+ struct GuestCallbacks {
+ VAddr rtld_fini;
+ VAddr rtld_init;
+ VAddr Control;
+ VAddr ResolveBasicSymbols;
+ VAddr SetupDiagnostics;
+ VAddr Configure;
+ VAddr GenerateCode;
+ VAddr GetVersion;
+ VAddr Keeper;
+ VAddr OnPrepared;
+ };
+
+ struct JITConfiguration {
+ CodeRange user_rx_memory;
+ CodeRange user_ro_memory;
+ CodeRange work_memory;
+ CodeRange sys_rx_memory;
+ CodeRange sys_ro_memory;
+ };
+
+ GuestCallbacks callbacks;
+ JITConfiguration configuration;
+ JITContext context;
};
class JITU final : public ServiceFramework<JITU> {
@@ -40,9 +269,59 @@ public:
void CreateJitEnvironment(Kernel::HLERequestContext& ctx) {
LOG_DEBUG(Service_JIT, "called");
+ struct Parameters {
+ u64 rx_size;
+ u64 ro_size;
+ };
+
+ IPC::RequestParser rp{ctx};
+ const auto parameters{rp.PopRaw<Parameters>()};
+ const auto executable_mem_handle{ctx.GetCopyHandle(1)};
+ const auto readable_mem_handle{ctx.GetCopyHandle(2)};
+
+ if (parameters.rx_size == 0 || parameters.ro_size == 0) {
+ LOG_ERROR(Service_JIT, "attempted to init with empty code regions");
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ // The copy handle at index 0 is the process handle, but handle tables are
+ // per-process, so there is no point reading it here until we are multiprocess
+ const auto& process{*system.CurrentProcess()};
+
+ auto executable_mem{
+ process.GetHandleTable().GetObject<Kernel::KCodeMemory>(executable_mem_handle)};
+ if (executable_mem.IsNull()) {
+ LOG_ERROR(Service_JIT, "executable_mem is null for handle=0x{:08X}",
+ executable_mem_handle);
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ auto readable_mem{
+ process.GetHandleTable().GetObject<Kernel::KCodeMemory>(readable_mem_handle)};
+ if (readable_mem.IsNull()) {
+ LOG_ERROR(Service_JIT, "readable_mem is null for handle=0x{:08X}", readable_mem_handle);
+ IPC::ResponseBuilder rb{ctx, 2};
+ rb.Push(ResultUnknown);
+ return;
+ }
+
+ const CodeRange user_rx{
+ .offset = executable_mem->GetSourceAddress(),
+ .size = parameters.rx_size,
+ };
+
+ const CodeRange user_ro{
+ .offset = readable_mem->GetSourceAddress(),
+ .size = parameters.ro_size,
+ };
+
IPC::ResponseBuilder rb{ctx, 2, 0, 1};
rb.Push(ResultSuccess);
- rb.PushIpcInterface<IJitEnvironment>(system);
+ rb.PushIpcInterface<IJitEnvironment>(system, user_rx, user_ro);
}
};
diff --git a/src/core/hle/service/jit/jit_context.cpp b/src/core/hle/service/jit/jit_context.cpp
new file mode 100644
index 000000000..630368fb3
--- /dev/null
+++ b/src/core/hle/service/jit/jit_context.cpp
@@ -0,0 +1,424 @@
+// Copyright 2022 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <array>
+#include <map>
+#include <span>
+#include <boost/icl/interval_set.hpp>
+#include <dynarmic/interface/A64/a64.h>
+#include <dynarmic/interface/A64/config.h>
+
+#include "common/alignment.h"
+#include "common/common_funcs.h"
+#include "common/div_ceil.h"
+#include "common/logging/log.h"
+#include "core/hle/service/jit/jit_context.h"
+#include "core/memory.h"
+
+namespace Service::JIT {
+
+constexpr std::array<u8, 4> STOP_ARM64 = {
+ 0x01, 0x00, 0x00, 0xd4, // svc #0
+};
+
+constexpr std::array<u8, 8> RESOLVE_ARM64 = {
+ 0x21, 0x00, 0x00, 0xd4, // svc #1
+ 0xc0, 0x03, 0x5f, 0xd6, // ret
+};
+
+constexpr std::array<u8, 4> PANIC_ARM64 = {
+ 0x41, 0x00, 0x00, 0xd4, // svc #2
+};
+
+constexpr std::array<u8, 60> MEMMOVE_ARM64 = {
+ 0x1f, 0x00, 0x01, 0xeb, // cmp x0, x1
+ 0x83, 0x01, 0x00, 0x54, // b.lo #+34
+ 0x42, 0x04, 0x00, 0xd1, // sub x2, x2, 1
+ 0x22, 0x01, 0xf8, 0xb7, // tbnz x2, #63, #+36
+ 0x23, 0x68, 0x62, 0x38, // ldrb w3, [x1, x2]
+ 0x03, 0x68, 0x22, 0x38, // strb w3, [x0, x2]
+ 0xfc, 0xff, 0xff, 0x17, // b #-16
+ 0x24, 0x68, 0x63, 0x38, // ldrb w4, [x1, x3]
+ 0x04, 0x68, 0x23, 0x38, // strb w4, [x0, x3]
+ 0x63, 0x04, 0x00, 0x91, // add x3, x3, 1
+ 0x7f, 0x00, 0x02, 0xeb, // cmp x3, x2
+ 0x8b, 0xff, 0xff, 0x54, // b.lt #-16
+ 0xc0, 0x03, 0x5f, 0xd6, // ret
+ 0x03, 0x00, 0x80, 0xd2, // mov x3, 0
+ 0xfc, 0xff, 0xff, 0x17, // b #-16
+};
+
+constexpr std::array<u8, 28> MEMSET_ARM64 = {
+ 0x03, 0x00, 0x80, 0xd2, // mov x3, 0
+ 0x7f, 0x00, 0x02, 0xeb, // cmp x3, x2
+ 0x4b, 0x00, 0x00, 0x54, // b.lt #+8
+ 0xc0, 0x03, 0x5f, 0xd6, // ret
+ 0x01, 0x68, 0x23, 0x38, // strb w1, [x0, x3]
+ 0x63, 0x04, 0x00, 0x91, // add x3, x3, 1
+ 0xfb, 0xff, 0xff, 0x17, // b #-20
+};
+
+struct HelperFunction {
+ const char* name;
+ const std::span<const u8> data;
+};
+
+constexpr std::array<HelperFunction, 6> HELPER_FUNCTIONS{{
+ {"_stop", STOP_ARM64},
+ {"_resolve", RESOLVE_ARM64},
+ {"_panic", PANIC_ARM64},
+ {"memcpy", MEMMOVE_ARM64},
+ {"memmove", MEMMOVE_ARM64},
+ {"memset", MEMSET_ARM64},
+}};
+
+struct Elf64_Dyn {
+ u64 d_tag;
+ u64 d_un;
+};
+
+struct Elf64_Rela {
+ u64 r_offset;
+ u64 r_info;
+ s64 r_addend;
+};
+
+static constexpr u32 Elf64_RelaType(const Elf64_Rela* rela) {
+ return static_cast<u32>(rela->r_info);
+}
+
+constexpr int DT_RELA = 7; /* Address of Rela relocs */
+constexpr int DT_RELASZ = 8; /* Total size of Rela relocs */
+constexpr int R_AARCH64_RELATIVE = 1027; /* Adjust by program base. */
+
+constexpr size_t STACK_ALIGN = 16;
+
+class JITContextImpl;
+
+using IntervalSet = boost::icl::interval_set<VAddr>::type;
+using IntervalType = boost::icl::interval_set<VAddr>::interval_type;
+
+class DynarmicCallbacks64 : public Dynarmic::A64::UserCallbacks {
+public:
+ explicit DynarmicCallbacks64(Core::Memory::Memory& memory_, std::vector<u8>& local_memory_,
+ IntervalSet& mapped_ranges_, JITContextImpl& parent_)
+ : memory{memory_}, local_memory{local_memory_},
+ mapped_ranges{mapped_ranges_}, parent{parent_} {}
+
+ u8 MemoryRead8(u64 vaddr) override {
+ return ReadMemory<u8>(vaddr);
+ }
+ u16 MemoryRead16(u64 vaddr) override {
+ return ReadMemory<u16>(vaddr);
+ }
+ u32 MemoryRead32(u64 vaddr) override {
+ return ReadMemory<u32>(vaddr);
+ }
+ u64 MemoryRead64(u64 vaddr) override {
+ return ReadMemory<u64>(vaddr);
+ }
+ u128 MemoryRead128(u64 vaddr) override {
+ return ReadMemory<u128>(vaddr);
+ }
+ std::string MemoryReadCString(u64 vaddr) {
+ std::string result;
+ u8 next;
+
+ while ((next = MemoryRead8(vaddr++)) != 0) {
+ result += next;
+ }
+
+ return result;
+ }
+
+ void MemoryWrite8(u64 vaddr, u8 value) override {
+ WriteMemory<u8>(vaddr, value);
+ }
+ void MemoryWrite16(u64 vaddr, u16 value) override {
+ WriteMemory<u16>(vaddr, value);
+ }
+ void MemoryWrite32(u64 vaddr, u32 value) override {
+ WriteMemory<u32>(vaddr, value);
+ }
+ void MemoryWrite64(u64 vaddr, u64 value) override {
+ WriteMemory<u64>(vaddr, value);
+ }
+ void MemoryWrite128(u64 vaddr, u128 value) override {
+ WriteMemory<u128>(vaddr, value);
+ }
+
+ bool MemoryWriteExclusive8(u64 vaddr, u8 value, u8) override {
+ return WriteMemory<u8>(vaddr, value);
+ }
+ bool MemoryWriteExclusive16(u64 vaddr, u16 value, u16) override {
+ return WriteMemory<u16>(vaddr, value);
+ }
+ bool MemoryWriteExclusive32(u64 vaddr, u32 value, u32) override {
+ return WriteMemory<u32>(vaddr, value);
+ }
+ bool MemoryWriteExclusive64(u64 vaddr, u64 value, u64) override {
+ return WriteMemory<u64>(vaddr, value);
+ }
+ bool MemoryWriteExclusive128(u64 vaddr, u128 value, u128) override {
+ return WriteMemory<u128>(vaddr, value);
+ }
+
+ void CallSVC(u32 swi) override;
+ void ExceptionRaised(u64 pc, Dynarmic::A64::Exception exception) override;
+ void InterpreterFallback(u64 pc, size_t num_instructions) override;
+
+ void AddTicks(u64 ticks) override {}
+ u64 GetTicksRemaining() override {
+ return std::numeric_limits<u32>::max();
+ }
+ u64 GetCNTPCT() override {
+ return 0;
+ }
+
+ template <class T>
+ T ReadMemory(u64 vaddr) {
+ T ret{};
+ if (boost::icl::contains(mapped_ranges, vaddr)) {
+ memory.ReadBlock(vaddr, &ret, sizeof(T));
+ } else if (vaddr + sizeof(T) > local_memory.size()) {
+ LOG_CRITICAL(Service_JIT, "plugin: unmapped read @ 0x{:016x}", vaddr);
+ } else {
+ std::memcpy(&ret, local_memory.data() + vaddr, sizeof(T));
+ }
+ return ret;
+ }
+
+ template <class T>
+ bool WriteMemory(u64 vaddr, const T value) {
+ if (boost::icl::contains(mapped_ranges, vaddr)) {
+ memory.WriteBlock(vaddr, &value, sizeof(T));
+ } else if (vaddr + sizeof(T) > local_memory.size()) {
+ LOG_CRITICAL(Service_JIT, "plugin: unmapped write @ 0x{:016x}", vaddr);
+ } else {
+ std::memcpy(local_memory.data() + vaddr, &value, sizeof(T));
+ }
+ return true;
+ }
+
+private:
+ Core::Memory::Memory& memory;
+ std::vector<u8>& local_memory;
+ IntervalSet& mapped_ranges;
+ JITContextImpl& parent;
+};
+
+class JITContextImpl {
+public:
+ explicit JITContextImpl(Core::Memory::Memory& memory_) : memory{memory_} {
+ callbacks =
+ std::make_unique<DynarmicCallbacks64>(memory, local_memory, mapped_ranges, *this);
+ user_config.callbacks = callbacks.get();
+ jit = std::make_unique<Dynarmic::A64::Jit>(user_config);
+ }
+
+ bool LoadNRO(std::span<const u8> data) {
+ local_memory.clear();
+ local_memory.insert(local_memory.end(), data.begin(), data.end());
+
+ if (FixupRelocations()) {
+ InsertHelperFunctions();
+ InsertStack();
+ return true;
+ } else {
+ return false;
+ }
+ }
+
+ bool FixupRelocations() {
+ const VAddr mod_offset{callbacks->MemoryRead32(4)};
+ if (callbacks->MemoryRead32(mod_offset) != Common::MakeMagic('M', 'O', 'D', '0')) {
+ return false;
+ }
+
+ VAddr dynamic_offset{mod_offset + callbacks->MemoryRead32(mod_offset + 4)};
+ VAddr rela_dyn = 0;
+ size_t num_rela = 0;
+ while (true) {
+ const auto dyn{callbacks->ReadMemory<Elf64_Dyn>(dynamic_offset)};
+ dynamic_offset += sizeof(Elf64_Dyn);
+
+ if (!dyn.d_tag) {
+ break;
+ }
+ if (dyn.d_tag == DT_RELA) {
+ rela_dyn = dyn.d_un;
+ }
+ if (dyn.d_tag == DT_RELASZ) {
+ num_rela = dyn.d_un / sizeof(Elf64_Rela);
+ }
+ }
+
+ for (size_t i = 0; i < num_rela; i++) {
+ const auto rela{callbacks->ReadMemory<Elf64_Rela>(rela_dyn + i * sizeof(Elf64_Rela))};
+ if (Elf64_RelaType(&rela) != R_AARCH64_RELATIVE) {
+ continue;
+ }
+ const VAddr contents{callbacks->MemoryRead64(rela.r_offset)};
+ callbacks->MemoryWrite64(rela.r_offset, contents + rela.r_addend);
+ }
+
+ return true;
+ }
+
+ void InsertHelperFunctions() {
+ for (const auto& [name, contents] : HELPER_FUNCTIONS) {
+ helpers[name] = local_memory.size();
+ local_memory.insert(local_memory.end(), contents.begin(), contents.end());
+ }
+ }
+
+ void InsertStack() {
+ const u64 pad_amount{Common::AlignUp(local_memory.size(), STACK_ALIGN) -
+ local_memory.size()};
+ local_memory.insert(local_memory.end(), 0x10000 + pad_amount, 0);
+ top_of_stack = local_memory.size();
+ heap_pointer = top_of_stack;
+ }
+
+ void MapProcessMemory(VAddr dest_address, std::size_t size) {
+ mapped_ranges.add(IntervalType{dest_address, dest_address + size});
+ }
+
+ void PushArgument(const void* data, size_t size) {
+ const size_t num_words = Common::DivCeil(size, sizeof(u64));
+ const size_t current_pos = argument_stack.size();
+ argument_stack.insert(argument_stack.end(), num_words, 0);
+ std::memcpy(argument_stack.data() + current_pos, data, size);
+ }
+
+ void SetupArguments() {
+ for (size_t i = 0; i < 8 && i < argument_stack.size(); i++) {
+ jit->SetRegister(i, argument_stack[i]);
+ }
+ if (argument_stack.size() > 8) {
+ const VAddr new_sp = Common::AlignDown(
+ top_of_stack - (argument_stack.size() - 8) * sizeof(u64), STACK_ALIGN);
+ for (size_t i = 8; i < argument_stack.size(); i++) {
+ callbacks->MemoryWrite64(new_sp + (i - 8) * sizeof(u64), argument_stack[i]);
+ }
+ jit->SetSP(new_sp);
+ }
+ argument_stack.clear();
+ heap_pointer = top_of_stack;
+ }
+
+ u64 CallFunction(VAddr func) {
+ jit->SetRegister(30, helpers["_stop"]);
+ jit->SetSP(top_of_stack);
+ SetupArguments();
+
+ jit->SetPC(func);
+ jit->Run();
+ return jit->GetRegister(0);
+ }
+
+ VAddr GetHelper(const std::string& name) {
+ return helpers[name];
+ }
+
+ VAddr AddHeap(const void* data, size_t size) {
+ const size_t num_bytes{Common::AlignUp(size, STACK_ALIGN)};
+ if (heap_pointer + num_bytes > local_memory.size()) {
+ local_memory.insert(local_memory.end(),
+ (heap_pointer + num_bytes) - local_memory.size(), 0);
+ }
+ const VAddr location{heap_pointer};
+ std::memcpy(local_memory.data() + location, data, size);
+ heap_pointer += num_bytes;
+ return location;
+ }
+
+ void GetHeap(VAddr location, void* data, size_t size) {
+ std::memcpy(data, local_memory.data() + location, size);
+ }
+
+ std::unique_ptr<DynarmicCallbacks64> callbacks;
+ std::vector<u8> local_memory;
+ std::vector<u64> argument_stack;
+ IntervalSet mapped_ranges;
+ Dynarmic::A64::UserConfig user_config;
+ std::unique_ptr<Dynarmic::A64::Jit> jit;
+ std::map<std::string, VAddr, std::less<>> helpers;
+ Core::Memory::Memory& memory;
+ VAddr top_of_stack;
+ VAddr heap_pointer;
+};
+
+void DynarmicCallbacks64::CallSVC(u32 swi) {
+ switch (swi) {
+ case 0:
+ parent.jit->HaltExecution();
+ break;
+
+ case 1: {
+ // X0 contains a char* for a symbol to resolve
+ std::string name{MemoryReadCString(parent.jit->GetRegister(0))};
+ const auto helper{parent.helpers[name]};
+
+ if (helper != 0) {
+ parent.jit->SetRegister(0, helper);
+ } else {
+ LOG_WARNING(Service_JIT, "plugin requested unknown function {}", name);
+ parent.jit->SetRegister(0, parent.helpers["_panic"]);
+ }
+ break;
+ }
+
+ case 2:
+ default:
+ LOG_CRITICAL(Service_JIT, "plugin panicked!");
+ parent.jit->HaltExecution();
+ break;
+ }
+}
+
+void DynarmicCallbacks64::ExceptionRaised(u64 pc, Dynarmic::A64::Exception exception) {
+ LOG_CRITICAL(Service_JIT, "Illegal operation PC @ {:08x}", pc);
+ parent.jit->HaltExecution();
+}
+
+void DynarmicCallbacks64::InterpreterFallback(u64 pc, size_t num_instructions) {
+ LOG_CRITICAL(Service_JIT, "Unimplemented instruction PC @ {:08x}", pc);
+ parent.jit->HaltExecution();
+}
+
+JITContext::JITContext(Core::Memory::Memory& memory)
+ : impl{std::make_unique<JITContextImpl>(memory)} {}
+
+JITContext::~JITContext() {}
+
+bool JITContext::LoadNRO(std::span<const u8> data) {
+ return impl->LoadNRO(data);
+}
+
+void JITContext::MapProcessMemory(VAddr dest_address, std::size_t size) {
+ impl->MapProcessMemory(dest_address, size);
+}
+
+u64 JITContext::CallFunction(VAddr func) {
+ return impl->CallFunction(func);
+}
+
+void JITContext::PushArgument(const void* data, size_t size) {
+ impl->PushArgument(data, size);
+}
+
+VAddr JITContext::GetHelper(const std::string& name) {
+ return impl->GetHelper(name);
+}
+
+VAddr JITContext::AddHeap(const void* data, size_t size) {
+ return impl->AddHeap(data, size);
+}
+
+void JITContext::GetHeap(VAddr location, void* data, size_t size) {
+ impl->GetHeap(location, data, size);
+}
+
+} // namespace Service::JIT
diff --git a/src/core/hle/service/jit/jit_context.h b/src/core/hle/service/jit/jit_context.h
new file mode 100644
index 000000000..d8bf76cff
--- /dev/null
+++ b/src/core/hle/service/jit/jit_context.h
@@ -0,0 +1,65 @@
+// Copyright 2022 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <span>
+#include <string>
+
+#include "common/common_types.h"
+
+namespace Core::Memory {
+class Memory;
+}
+
+namespace Service::JIT {
+
+class JITContextImpl;
+
+class JITContext {
+public:
+ explicit JITContext(Core::Memory::Memory& memory);
+ ~JITContext();
+
+ [[nodiscard]] bool LoadNRO(std::span<const u8> data);
+ void MapProcessMemory(VAddr dest_address, std::size_t size);
+
+ template <typename T, typename... Ts>
+ u64 CallFunction(VAddr func, T argument, Ts... rest) {
+ static_assert(std::is_trivially_copyable_v<T>);
+ PushArgument(&argument, sizeof(argument));
+
+ if constexpr (sizeof...(rest) > 0) {
+ return CallFunction(func, rest...);
+ } else {
+ return CallFunction(func);
+ }
+ }
+
+ u64 CallFunction(VAddr func);
+ VAddr GetHelper(const std::string& name);
+
+ template <typename T>
+ VAddr AddHeap(T argument) {
+ return AddHeap(&argument, sizeof(argument));
+ }
+ VAddr AddHeap(const void* data, size_t size);
+
+ template <typename T>
+ T GetHeap(VAddr location) {
+ static_assert(std::is_trivially_copyable_v<T>);
+ T result;
+ GetHeap(location, &result, sizeof(result));
+ return result;
+ }
+ void GetHeap(VAddr location, void* data, size_t size);
+
+private:
+ std::unique_ptr<JITContextImpl> impl;
+
+ void PushArgument(const void* data, size_t size);
+};
+
+} // namespace Service::JIT
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 14:58:22 +0000