Initial xenia-rs
This commit is contained in:
MechaCat02
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/devkit
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recent.toml
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# Rust
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target/
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164
RUST_PORT_CODEMAP.md
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## Xenia Xbox 360 Emulator: JIT vs Interpreter Architecture Analysis
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Analysis of Xenia's architecture comparing JIT vs interpreter approaches for Rust porting. Key findings: JIT pipeline [1a-1d] uses Xbyak with no Rust equivalent, MMIO relies on hardware exceptions [2a-2d], while interpreter approach uses explicit MMIO checking [3a-3d]. The PPC context [4a-4d] and opcode infrastructure [5a-5d] support both approaches. Memory system [6a-6c] requires unsafe Rust regardless. Kernel HLE [7a-7c] and GPU shader translation [8a-8c] present additional challenges.
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### 1. JIT Code Generation Pipeline
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The current PPC-to-x64 JIT compilation pipeline using HIR and Xbyak
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### 1a. JIT Pipeline Initialization (`ppc_translator.cc:44`)
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Sets up scanner, HIR builder, compiler, and Xbyak assembler
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```text
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PPCTranslator::PPCTranslator(PPCFrontend* frontend) : frontend_(frontend) {
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```
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### 1b. HIR Optimization Passes (`ppc_translator.cc:57`)
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Adds multiple optimization passes to the compiler pipeline
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```text
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compiler_->AddPass(std::make_unique<passes::ControlFlowAnalysisPass>());
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```
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### 1c. Xbyak-based Code Emitter (`x64_emitter.h:208`)
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X64Emitter inherits from Xbyak for runtime x64 code generation
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```text
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class X64Emitter : public Xbyak::CodeGenerator {
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```
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### 1d. Host-to-Guest Thunk (`x64_backend.cc:656`)
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Raw x64 assembly emitted for host↔guest ABI transitions
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```text
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mov(rdi, ptr[rsi + offsetof(ppc::PPCContext, virtual_membase)]); // membase
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```
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### 2. MMIO Exception Handling
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Hardware exception-based MMIO interception used by the JIT
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### 2a. Exception Handler Entry (`mmio_handler.cc:402`)
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Catches access violations to handle MMIO operations
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```text
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bool MMIOHandler::ExceptionCallback(Exception* ex) {
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```
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### 2b. Filter Access Violations (`mmio_handler.cc:403`)
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Only processes memory access violations
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```text
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if (ex->code() != Exception::Code::kAccessViolation) {
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```
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### 2c. Address Translation (`mmio_handler.cc:427`)
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Translates host fault address back to guest virtual address
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```text
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fault_guest_virtual_address = host_to_guest_virtual_(
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```
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### 2d. Instruction Decoding (`mmio_handler.cc:449`)
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Decodes the faulting x64 instruction to determine the operation
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```text
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if (!TryDecodeLoadStore(p, decoded_load_store)) {
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```
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### 3. Interpreter Alternative Approach
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Explicit MMIO checking pattern that enables interpreter implementation
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### 3a. Explicit MMIO Check Function (`x64_seq_memory.cc:1216`)
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Pattern for checking MMIO ranges without exceptions
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```text
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static T MMIOAwareLoad(void* _ctx, unsigned int guestaddr) {
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```
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### 3b. Range Lookup (`x64_seq_memory.cc:1225`)
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Explicitly checks if address is in mapped MMIO range
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```text
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auto gaddr = ctx->processor->memory()->LookupVirtualMappedRange(guestaddr);
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```
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### 3c. MMIO Callback Invocation (`x64_seq_memory.cc:1236`)
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Calls MMIO read callback instead of accessing memory directly
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```text
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value = gaddr->read(nullptr, gaddr->callback_context, guestaddr);
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```
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### 3d. MMIO Handler Interface (`mmio_handler.h:73`)
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Public API for explicit MMIO checking in interpreter mode
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```text
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bool CheckLoad(uint32_t virtual_address, uint32_t* out_value);
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```
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### 4. PPC Context and State Management
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Register file and thread state structures that would need Rust porting
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### 4a. PPC Register File (`ppc_context.h:378`)
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32 GPRs, CTR, LR, MSR in the context structure
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```text
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uint64_t r[32]; // 0x20 General purpose registers
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```
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### 4b. Floating-Point and Vector Registers (`ppc_context.h:384`)
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32 FPRs and 128 VMX128 vector registers
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```text
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double f[32]; // 0x120 Floating-point registers
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```
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### 4c. Thread State Context (`thread_state.h:49`)
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Each guest thread owns a PPCContext pointer
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```text
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ppc::PPCContext* context_;
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```
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### 4d. Big-Endian Wrapper (`byte_order.h:134`)
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Type that handles big-endian conversion for guest structures
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```text
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template <typename T>
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using be = endian_store<T, std::endian::big>;
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```
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### 5. Opcode Dispatch Infrastructure
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PPC opcode enumeration and lookup that enables interpreter implementation
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### 5a. PPC Opcode Enumeration (`ppc_opcode.h:14`)
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Complete enum of all PPC opcodes including VMX128 extensions
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```text
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enum class PPCOpcode : uint32_t {
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```
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### 5b. Opcode Dispatch Table (`ppc_opcode_lookup_gen.cc:262`)
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Fast lookup table for opcode decoding
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```text
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case 0b000101: PPC_DECODER_HIT(vrlw128);
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```
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### 5c. VMX128 Instruction Encoding (`ppc_emit_altivec.cc:37`)
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Macros for decoding Xbox 360-specific VMX128 instructions
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```text
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#define VX128(op, xop) (OP(op) | (((uint32_t)(xop)) & 0x3d0))
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```
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### 5d. Basic Block Discovery (`ppc_scanner.h:36`)
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Finds basic block boundaries for potential interpreter caching
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```text
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std::vector<BlockInfo> FindBlocks(GuestFunction* function);
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```
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### 6. Memory System Architecture
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4GB virtual address space management required for both approaches
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### 6a. Virtual Memory Allocation (`memory.cc:142`)
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Creates 4GB+ file-backed mapping for guest address space
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```text
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mapping_ = xe::memory::CreateFileMappingHandle(
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```
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### 6b. Virtual Memory Base (`memory.cc:167`)
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Sets up virtual and physical memory base addresses
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```text
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virtual_membase_ = mapping_base_;
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```
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### 6c. Guest Address Translation (`ppc_context.h:433`)
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Fast inline function for translating guest to host addresses
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```text
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inline T TranslateVirtual(uint32_t guest_address) const {
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```
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### 7. Kernel HLE System
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Massive kernel export table that would need Rust porting
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### 7a. Kernel Export Table (`xboxkrnl_table.inc:15`)
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96KB+ table of all xboxkrnl exports
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```text
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XE_EXPORT(xboxkrnl, 0x00000001, DbgBreakPoint, kFunction),
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```
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### 7b. Guest Thread Structure (`xthread.h:256`)
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Packed big-endian X_KTHREAD structure living in guest memory
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```text
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xe::be<uint32_t> stack_base; // 0x5C
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```
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### 7c. Kernel State Management (`emulator.h:349`)
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Central kernel object tracking all guest kernel state
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```text
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std::unique_ptr<kernel::KernelState> kernel_state_;
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```
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### 8. GPU Shader Translation
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Complex shader translation pipeline that poses challenges for Rust porting
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### 8a. SPIR-V Builder Initialization (`spirv_shader_translator.cc:155`)
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Uses glslang C++ API for SPIR-V generation
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```text
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builder_ = std::make_unique<SpirvBuilder>(
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```
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### 8b. Shader Interpreter (`shader_interpreter.h:51`)
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Existing interpreter for simple shaders without texture fetches
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```text
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static bool CanInterpretShader(const Shader& shader) {
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```
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### 8c. C++ Dependency (`premake5.lua:31`)
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glslang dependency with no direct Rust equivalent
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```text
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"glslang-spirv",
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```
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1085
RUST_PORT_REPORT.md
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1085
RUST_PORT_REPORT.md
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File diff suppressed because it is too large
Load Diff
626
xenia-rs/Cargo.lock
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626
xenia-rs/Cargo.lock
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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||||
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||||
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||||
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||||
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||||
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||||
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||||
[[package]]
|
||||
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|
||||
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|
||||
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||||
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||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
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|
||||
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|
||||
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||||
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|
||||
"proc-macro2",
|
||||
"quote",
|
||||
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|
||||
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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||||
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||||
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|
||||
"thiserror-impl",
|
||||
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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||||
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||||
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|
||||
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|
||||
"quote",
|
||||
"syn",
|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "thread_local"
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
"cfg-if",
|
||||
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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||||
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|
||||
"pin-project-lite",
|
||||
"tracing-attributes",
|
||||
"tracing-core",
|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "tracing-attributes"
|
||||
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|
||||
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|
||||
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||||
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|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "tracing-core"
|
||||
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|
||||
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||||
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||||
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|
||||
"once_cell",
|
||||
"valuable",
|
||||
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|
||||
|
||||
[[package]]
|
||||
name = "tracing-log"
|
||||
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|
||||
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||||
checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
|
||||
dependencies = [
|
||||
"log",
|
||||
"once_cell",
|
||||
"tracing-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tracing-subscriber"
|
||||
version = "0.3.23"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
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||||
dependencies = [
|
||||
"matchers",
|
||||
"nu-ansi-term",
|
||||
"once_cell",
|
||||
"regex-automata",
|
||||
"sharded-slab",
|
||||
"smallvec",
|
||||
"thread_local",
|
||||
"tracing",
|
||||
"tracing-core",
|
||||
"tracing-log",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
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||||
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||||
[[package]]
|
||||
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||||
|
||||
[[package]]
|
||||
name = "valuable"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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||||
|
||||
[[package]]
|
||||
name = "windows-link"
|
||||
version = "0.2.1"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
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||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.59.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
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||||
dependencies = [
|
||||
"windows-targets",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.61.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
|
||||
dependencies = [
|
||||
"windows-link",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-targets"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
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||||
dependencies = [
|
||||
"windows_aarch64_gnullvm",
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_gnullvm",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_gnullvm",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_gnullvm"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
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||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
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||||
version = "0.52.6"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.52.6"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnullvm"
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||||
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
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||||
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||||
[[package]]
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||||
name = "windows_i686_msvc"
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||||
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||||
[[package]]
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||||
name = "windows_x86_64_gnu"
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||||
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
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||||
|
||||
[[package]]
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||||
name = "windows_x86_64_gnullvm"
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||||
version = "0.52.6"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
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||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.52.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
|
||||
|
||||
[[package]]
|
||||
name = "xenia-app"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"clap",
|
||||
"tracing",
|
||||
"tracing-subscriber",
|
||||
"xenia-apu",
|
||||
"xenia-cpu",
|
||||
"xenia-debugger",
|
||||
"xenia-gpu",
|
||||
"xenia-hid",
|
||||
"xenia-kernel",
|
||||
"xenia-memory",
|
||||
"xenia-types",
|
||||
"xenia-vfs",
|
||||
"xenia-xex",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-apu"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-cpu"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-memory",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-debugger"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-cpu",
|
||||
"xenia-memory",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-gpu"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"byteorder",
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-memory",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-hid"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-kernel"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-cpu",
|
||||
"xenia-memory",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-memory"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"libc",
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"windows-sys 0.59.0",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-types"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"bitflags",
|
||||
"byteorder",
|
||||
"serde",
|
||||
"thiserror",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-vfs"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"byteorder",
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-types",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "xenia-xex"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"anyhow",
|
||||
"byteorder",
|
||||
"thiserror",
|
||||
"tracing",
|
||||
"xenia-memory",
|
||||
"xenia-types",
|
||||
]
|
||||
42
xenia-rs/Cargo.toml
Normal file
42
xenia-rs/Cargo.toml
Normal file
@@ -0,0 +1,42 @@
|
||||
[workspace]
|
||||
resolver = "2"
|
||||
members = [
|
||||
"crates/xenia-types",
|
||||
"crates/xenia-memory",
|
||||
"crates/xenia-cpu",
|
||||
"crates/xenia-xex",
|
||||
"crates/xenia-vfs",
|
||||
"crates/xenia-kernel",
|
||||
"crates/xenia-gpu",
|
||||
"crates/xenia-apu",
|
||||
"crates/xenia-hid",
|
||||
"crates/xenia-debugger",
|
||||
"crates/xenia-app",
|
||||
]
|
||||
|
||||
[workspace.package]
|
||||
version = "0.1.0"
|
||||
edition = "2024"
|
||||
license = "BSD-3-Clause"
|
||||
|
||||
[workspace.dependencies]
|
||||
# Shared types
|
||||
xenia-types = { path = "crates/xenia-types" }
|
||||
xenia-memory = { path = "crates/xenia-memory" }
|
||||
xenia-cpu = { path = "crates/xenia-cpu" }
|
||||
xenia-xex = { path = "crates/xenia-xex" }
|
||||
xenia-vfs = { path = "crates/xenia-vfs" }
|
||||
xenia-kernel = { path = "crates/xenia-kernel" }
|
||||
xenia-gpu = { path = "crates/xenia-gpu" }
|
||||
xenia-apu = { path = "crates/xenia-apu" }
|
||||
xenia-hid = { path = "crates/xenia-hid" }
|
||||
xenia-debugger = { path = "crates/xenia-debugger" }
|
||||
|
||||
# External dependencies
|
||||
tracing = "0.1"
|
||||
tracing-subscriber = { version = "0.3", features = ["env-filter"] }
|
||||
bitflags = "2"
|
||||
byteorder = "1"
|
||||
thiserror = "2"
|
||||
anyhow = "1"
|
||||
serde = { version = "1", features = ["derive"] }
|
||||
25
xenia-rs/crates/xenia-app/Cargo.toml
Normal file
25
xenia-rs/crates/xenia-app/Cargo.toml
Normal file
@@ -0,0 +1,25 @@
|
||||
[package]
|
||||
name = "xenia-app"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[[bin]]
|
||||
name = "xenia-rs"
|
||||
path = "src/main.rs"
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
xenia-memory = { workspace = true }
|
||||
xenia-cpu = { workspace = true }
|
||||
xenia-xex = { workspace = true }
|
||||
xenia-vfs = { workspace = true }
|
||||
xenia-kernel = { workspace = true }
|
||||
xenia-gpu = { workspace = true }
|
||||
xenia-apu = { workspace = true }
|
||||
xenia-hid = { workspace = true }
|
||||
xenia-debugger = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
tracing-subscriber = { workspace = true }
|
||||
anyhow = { workspace = true }
|
||||
clap = { version = "4", features = ["derive"] }
|
||||
244
xenia-rs/crates/xenia-app/src/main.rs
Normal file
244
xenia-rs/crates/xenia-app/src/main.rs
Normal file
@@ -0,0 +1,244 @@
|
||||
use anyhow::Result;
|
||||
use clap::{Parser, Subcommand};
|
||||
use tracing_subscriber::EnvFilter;
|
||||
|
||||
#[derive(Parser)]
|
||||
#[command(name = "xenia-rs")]
|
||||
#[command(about = "Xbox 360 emulator for reverse engineering and preservation")]
|
||||
struct Cli {
|
||||
#[command(subcommand)]
|
||||
command: Commands,
|
||||
}
|
||||
|
||||
#[derive(Subcommand)]
|
||||
enum Commands {
|
||||
/// Disassemble a XEX file from its entry point
|
||||
Disasm {
|
||||
/// Path to XEX file
|
||||
path: String,
|
||||
/// Number of instructions to disassemble
|
||||
#[arg(short = 'n', default_value = "64")]
|
||||
count: usize,
|
||||
},
|
||||
/// Load and execute a XEX file with tracing
|
||||
Exec {
|
||||
/// Path to XEX file
|
||||
path: String,
|
||||
/// Maximum instructions to execute before stopping
|
||||
#[arg(short = 'n', default_value = "1000")]
|
||||
max_instructions: u64,
|
||||
},
|
||||
/// Browse XISO disc image contents
|
||||
Browse {
|
||||
/// Path to XISO file
|
||||
path: String,
|
||||
},
|
||||
/// Display XEX header information
|
||||
Info {
|
||||
/// Path to XEX file
|
||||
path: String,
|
||||
},
|
||||
}
|
||||
|
||||
fn main() -> Result<()> {
|
||||
tracing_subscriber::fmt()
|
||||
.with_env_filter(EnvFilter::from_default_env().add_directive("info".parse()?))
|
||||
.init();
|
||||
|
||||
let cli = Cli::parse();
|
||||
|
||||
match cli.command {
|
||||
Commands::Disasm { path, count } => cmd_disasm(&path, count),
|
||||
Commands::Exec { path, max_instructions } => cmd_exec(&path, max_instructions),
|
||||
Commands::Browse { path } => cmd_browse(&path),
|
||||
Commands::Info { path } => cmd_info(&path),
|
||||
}
|
||||
}
|
||||
|
||||
fn cmd_info(path: &str) -> Result<()> {
|
||||
let data = std::fs::read(path)?;
|
||||
let header = xenia_xex::loader::parse_xex2_header(&data)?;
|
||||
|
||||
println!("=== XEX2 Header ===");
|
||||
println!("Magic: {:#010x}", header.magic);
|
||||
println!("Module Flags: {:#010x}", header.module_flags);
|
||||
println!("Header Size: {:#x}", header.header_size);
|
||||
println!("Headers: {}", header.header_count);
|
||||
|
||||
if let Some(entry) = xenia_xex::loader::get_entry_point(&header) {
|
||||
println!("Entry Point: {:#010x}", entry);
|
||||
}
|
||||
if let Some(base) = xenia_xex::loader::get_image_base(&header) {
|
||||
println!("Image Base: {:#010x}", base);
|
||||
}
|
||||
|
||||
println!("\n=== Optional Headers ===");
|
||||
for h in &header.optional_headers {
|
||||
println!(" Key: {:#010x} Value: {:#010x}", h.key, h.value);
|
||||
}
|
||||
|
||||
if let Some(ref sec) = header.security_info {
|
||||
println!("\n=== Security Info ===");
|
||||
println!("Image Size: {:#x}", sec.image_size);
|
||||
println!("Load Address: {:#010x}", sec.load_address);
|
||||
println!("Image Flags: {:#010x}", sec.image_flags);
|
||||
println!("Page Descs: {}", sec.page_descriptors.len());
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn cmd_disasm(path: &str, count: usize) -> Result<()> {
|
||||
let data = std::fs::read(path)?;
|
||||
let header = xenia_xex::loader::parse_xex2_header(&data)?;
|
||||
|
||||
let entry = xenia_xex::loader::get_entry_point(&header)
|
||||
.ok_or_else(|| anyhow::anyhow!("No entry point found in XEX2 header"))?;
|
||||
let base = xenia_xex::loader::get_image_base(&header)
|
||||
.ok_or_else(|| anyhow::anyhow!("No image base found in XEX2 header"))?;
|
||||
|
||||
println!("Entry point: {:#010x}, Image base: {:#010x}", entry, base);
|
||||
println!("Disassembly from entry point ({} instructions):\n", count);
|
||||
|
||||
// For now, disassemble from the raw file data at the entry offset
|
||||
let entry_offset = (entry - base) as usize + header.header_size as usize;
|
||||
if entry_offset + count * 4 <= data.len() {
|
||||
let block = xenia_cpu::disasm::disassemble_block(&data[entry_offset..], entry, count);
|
||||
for (addr, text) in block {
|
||||
println!(" {:#010x}: {}", addr, text);
|
||||
}
|
||||
} else {
|
||||
println!(" (entry point offset {:#x} is outside file bounds)", entry_offset);
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn cmd_exec(path: &str, max_instructions: u64) -> Result<()> {
|
||||
let data = std::fs::read(path)?;
|
||||
let header = xenia_xex::loader::parse_xex2_header(&data)?;
|
||||
|
||||
let entry = xenia_xex::loader::get_entry_point(&header)
|
||||
.ok_or_else(|| anyhow::anyhow!("No entry point found"))?;
|
||||
let base = xenia_xex::loader::get_image_base(&header)
|
||||
.ok_or_else(|| anyhow::anyhow!("No image base found"))?;
|
||||
|
||||
println!("Loading XEX: entry={:#010x} base={:#010x}", entry, base);
|
||||
|
||||
// Allocate guest memory
|
||||
let mut mem = xenia_memory::GuestMemory::new()
|
||||
.map_err(|e| anyhow::anyhow!("Failed to allocate guest memory: {}", e))?;
|
||||
|
||||
// Map the XEX image into guest memory
|
||||
let image_data = &data[header.header_size as usize..];
|
||||
let alloc_size = ((image_data.len() + 4095) & !4095) as u32;
|
||||
mem.alloc(
|
||||
base,
|
||||
alloc_size,
|
||||
xenia_memory::page_table::MemoryProtect::READ | xenia_memory::page_table::MemoryProtect::WRITE,
|
||||
).map_err(|e| anyhow::anyhow!("Failed to allocate guest memory region: {}", e))?;
|
||||
mem.write_bulk(base, image_data);
|
||||
|
||||
// Allocate stack (1MB at 0x70000000)
|
||||
let stack_base = 0x7000_0000u32;
|
||||
let stack_size = 0x10_0000u32;
|
||||
mem.alloc(
|
||||
stack_base,
|
||||
stack_size,
|
||||
xenia_memory::page_table::MemoryProtect::READ | xenia_memory::page_table::MemoryProtect::WRITE,
|
||||
).map_err(|e| anyhow::anyhow!("Failed to allocate stack: {}", e))?;
|
||||
|
||||
// Set up CPU context
|
||||
let mut ctx = xenia_cpu::PpcContext::new();
|
||||
ctx.pc = entry;
|
||||
ctx.gpr[1] = (stack_base + stack_size - 0x80) as u64; // Stack pointer (with red zone)
|
||||
ctx.gpr[13] = 0; // Small data area (TLS)
|
||||
|
||||
// Set up kernel
|
||||
let mut _kernel = xenia_kernel::KernelState::new();
|
||||
|
||||
// Set up debugger
|
||||
let mut debugger = xenia_debugger::Debugger::new();
|
||||
debugger.paused = false;
|
||||
debugger.step_mode = xenia_debugger::StepMode::Run;
|
||||
debugger.trace_enabled = true;
|
||||
|
||||
println!("Starting execution (max {} instructions)...\n", max_instructions);
|
||||
|
||||
use xenia_cpu::interpreter::{step, StepResult};
|
||||
|
||||
let mut instruction_count: u64 = 0;
|
||||
loop {
|
||||
if instruction_count >= max_instructions {
|
||||
println!("\nReached max instruction count ({})", max_instructions);
|
||||
break;
|
||||
}
|
||||
|
||||
// Pre-step debugger
|
||||
debugger.pre_step(&ctx, &mem);
|
||||
|
||||
let result = step(&mut ctx, &mut mem);
|
||||
instruction_count += 1;
|
||||
|
||||
// Post-step debugger
|
||||
debugger.post_step(&ctx, &mem);
|
||||
|
||||
match result {
|
||||
StepResult::Continue => {}
|
||||
StepResult::SystemCall => {
|
||||
println!("[{:>8}] SYSCALL at {:#010x}", instruction_count, ctx.pc.wrapping_sub(4));
|
||||
}
|
||||
StepResult::Unimplemented(op) => {
|
||||
println!("[{:>8}] UNIMPL: {:?} at {:#010x}", instruction_count, op, ctx.pc.wrapping_sub(4));
|
||||
}
|
||||
StepResult::Trap => {
|
||||
println!("[{:>8}] TRAP at {:#010x}", instruction_count, ctx.pc.wrapping_sub(4));
|
||||
}
|
||||
StepResult::Halted => {
|
||||
println!("[{:>8}] HALTED", instruction_count);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if debugger.should_break() {
|
||||
println!("[{:>8}] BREAK at {:#010x}", instruction_count, ctx.pc);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
println!("\n=== Final State ===");
|
||||
println!("PC: {:#010x}", ctx.pc);
|
||||
println!("LR: {:#010x}", ctx.lr as u32);
|
||||
println!("CTR: {:#010x}", ctx.ctr as u32);
|
||||
println!("CR: {:#010x}", ctx.cr());
|
||||
println!("XER: CA={} OV={} SO={}", ctx.xer_ca, ctx.xer_ov, ctx.xer_so);
|
||||
for i in 0..32 {
|
||||
if ctx.gpr[i] != 0 {
|
||||
println!("r{:<2}: {:#018x}", i, ctx.gpr[i]);
|
||||
}
|
||||
}
|
||||
println!("\nExecuted {} instructions", instruction_count);
|
||||
println!("Trace log: {} entries", debugger.trace_log.len());
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn cmd_browse(path: &str) -> Result<()> {
|
||||
use xenia_vfs::VfsDevice;
|
||||
|
||||
let disc = xenia_vfs::disc_image::DiscImageDevice::open("disc", std::path::Path::new(path))
|
||||
.map_err(|e| anyhow::anyhow!("Failed to open disc image: {}", e))?;
|
||||
|
||||
println!("=== XISO Contents: {} ===", path);
|
||||
match disc.list_root() {
|
||||
Ok(entries) => {
|
||||
for entry in entries {
|
||||
let kind = if entry.is_directory { "DIR " } else { "FILE" };
|
||||
println!(" {} {:>10} {}", kind, entry.size, entry.name);
|
||||
}
|
||||
}
|
||||
Err(e) => println!(" Error listing contents: {}", e),
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
10
xenia-rs/crates/xenia-apu/Cargo.toml
Normal file
10
xenia-rs/crates/xenia-apu/Cargo.toml
Normal file
@@ -0,0 +1,10 @@
|
||||
[package]
|
||||
name = "xenia-apu"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
16
xenia-rs/crates/xenia-apu/src/lib.rs
Normal file
16
xenia-rs/crates/xenia-apu/src/lib.rs
Normal file
@@ -0,0 +1,16 @@
|
||||
/// Audio processing unit stub. Logging only for now.
|
||||
pub struct AudioSystem {
|
||||
pub enabled: bool,
|
||||
}
|
||||
|
||||
impl AudioSystem {
|
||||
pub fn new() -> Self {
|
||||
Self { enabled: false }
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for AudioSystem {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
12
xenia-rs/crates/xenia-cpu/Cargo.toml
Normal file
12
xenia-rs/crates/xenia-cpu/Cargo.toml
Normal file
@@ -0,0 +1,12 @@
|
||||
[package]
|
||||
name = "xenia-cpu"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
xenia-memory = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
bitflags = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
191
xenia-rs/crates/xenia-cpu/src/context.rs
Normal file
191
xenia-rs/crates/xenia-cpu/src/context.rs
Normal file
@@ -0,0 +1,191 @@
|
||||
use xenia_types::Vec128;
|
||||
|
||||
/// Condition register field (one of CR0-CR7).
|
||||
#[derive(Debug, Clone, Copy, Default)]
|
||||
pub struct CrField {
|
||||
pub lt: bool,
|
||||
pub gt: bool,
|
||||
pub eq: bool,
|
||||
pub so: bool,
|
||||
}
|
||||
|
||||
impl CrField {
|
||||
pub fn as_u8(&self) -> u8 {
|
||||
((self.lt as u8) << 3) | ((self.gt as u8) << 2) | ((self.eq as u8) << 1) | (self.so as u8)
|
||||
}
|
||||
|
||||
pub fn from_u8(val: u8) -> Self {
|
||||
Self {
|
||||
lt: val & 8 != 0,
|
||||
gt: val & 4 != 0,
|
||||
eq: val & 2 != 0,
|
||||
so: val & 1 != 0,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// SPR (Special Purpose Register) numbers used by mfspr/mtspr.
|
||||
pub mod spr {
|
||||
pub const XER: u32 = 1;
|
||||
pub const LR: u32 = 8;
|
||||
pub const CTR: u32 = 9;
|
||||
pub const TBL: u32 = 268;
|
||||
pub const TBU: u32 = 269;
|
||||
pub const SPRG0: u32 = 272;
|
||||
pub const SPRG1: u32 = 273;
|
||||
pub const SPRG2: u32 = 274;
|
||||
pub const SPRG3: u32 = 275;
|
||||
pub const PVR: u32 = 287;
|
||||
pub const PIR: u32 = 1023;
|
||||
}
|
||||
|
||||
/// PowerPC processor context. Holds all register state for one guest thread.
|
||||
/// Mirrors PPCContext from ppc_context.h, minus JIT-specific fields.
|
||||
#[repr(C, align(64))]
|
||||
pub struct PpcContext {
|
||||
// General purpose registers (R0-R31)
|
||||
pub gpr: [u64; 32],
|
||||
// Count register
|
||||
pub ctr: u64,
|
||||
// Link register
|
||||
pub lr: u64,
|
||||
// Machine state register
|
||||
pub msr: u64,
|
||||
// Floating-point registers (F0-F31)
|
||||
pub fpr: [f64; 32],
|
||||
// VMX128 vector registers (V0-V127, Xbox 360 extended set)
|
||||
pub vr: [Vec128; 128],
|
||||
|
||||
// Condition register fields (CR0-CR7)
|
||||
pub cr: [CrField; 8],
|
||||
// Floating-point status and control register
|
||||
pub fpscr: u32,
|
||||
// XER register (split for easy individual updates)
|
||||
pub xer_ca: u8,
|
||||
pub xer_ov: u8,
|
||||
pub xer_so: u8,
|
||||
// Altivec VSCR saturation bit
|
||||
pub vscr_sat: u8,
|
||||
|
||||
// Program counter
|
||||
pub pc: u32,
|
||||
// Reservation address/value for lwarx/stwcx
|
||||
pub reserved_addr: u32,
|
||||
pub reserved_val: u64,
|
||||
pub has_reservation: bool,
|
||||
|
||||
// Thread ID (for kernel use)
|
||||
pub thread_id: u32,
|
||||
|
||||
// Cycle counter for timing
|
||||
pub cycle_count: u64,
|
||||
|
||||
// Time base (incremented each instruction for debugging)
|
||||
pub timebase: u64,
|
||||
}
|
||||
|
||||
impl PpcContext {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
gpr: [0; 32],
|
||||
ctr: 0,
|
||||
lr: 0,
|
||||
msr: 0,
|
||||
fpr: [0.0; 32],
|
||||
vr: [Vec128::ZERO; 128],
|
||||
cr: [CrField::default(); 8],
|
||||
fpscr: 0,
|
||||
xer_ca: 0,
|
||||
xer_ov: 0,
|
||||
xer_so: 0,
|
||||
vscr_sat: 0,
|
||||
pc: 0,
|
||||
reserved_addr: 0,
|
||||
reserved_val: 0,
|
||||
has_reservation: false,
|
||||
thread_id: 0,
|
||||
cycle_count: 0,
|
||||
timebase: 0,
|
||||
}
|
||||
}
|
||||
|
||||
/// Get the full 32-bit condition register.
|
||||
pub fn cr(&self) -> u32 {
|
||||
let mut val = 0u32;
|
||||
for (i, field) in self.cr.iter().enumerate() {
|
||||
val |= (field.as_u8() as u32) << (28 - i * 4);
|
||||
}
|
||||
val
|
||||
}
|
||||
|
||||
/// Set the full 32-bit condition register.
|
||||
pub fn set_cr(&mut self, val: u32) {
|
||||
for i in 0..8 {
|
||||
self.cr[i] = CrField::from_u8(((val >> (28 - i * 4)) & 0xF) as u8);
|
||||
}
|
||||
}
|
||||
|
||||
/// Get a single CR bit by absolute bit number (0-31).
|
||||
pub fn get_cr_bit(&self, bit: u32) -> bool {
|
||||
let field = (bit / 4) as usize;
|
||||
let sub = bit % 4;
|
||||
match sub {
|
||||
0 => self.cr[field].lt,
|
||||
1 => self.cr[field].gt,
|
||||
2 => self.cr[field].eq,
|
||||
3 => self.cr[field].so,
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Set a single CR bit by absolute bit number (0-31).
|
||||
pub fn set_cr_bit(&mut self, bit: u32, val: bool) {
|
||||
let field = (bit / 4) as usize;
|
||||
let sub = bit % 4;
|
||||
match sub {
|
||||
0 => self.cr[field].lt = val,
|
||||
1 => self.cr[field].gt = val,
|
||||
2 => self.cr[field].eq = val,
|
||||
3 => self.cr[field].so = val,
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Update a condition register field based on a comparison result (signed).
|
||||
pub fn update_cr_signed(&mut self, field: usize, val: i64) {
|
||||
self.cr[field] = CrField {
|
||||
lt: val < 0,
|
||||
gt: val > 0,
|
||||
eq: val == 0,
|
||||
so: self.xer_so != 0,
|
||||
};
|
||||
}
|
||||
|
||||
/// Update a condition register field based on a comparison result (unsigned).
|
||||
pub fn update_cr_unsigned(&mut self, field: usize, a: u64, b: u64) {
|
||||
self.cr[field] = CrField {
|
||||
lt: a < b,
|
||||
gt: a > b,
|
||||
eq: a == b,
|
||||
so: self.xer_so != 0,
|
||||
};
|
||||
}
|
||||
|
||||
/// Get the full XER register value.
|
||||
pub fn xer(&self) -> u32 {
|
||||
((self.xer_so as u32) << 31) | ((self.xer_ov as u32) << 30) | ((self.xer_ca as u32) << 29)
|
||||
}
|
||||
|
||||
/// Set XER from a full 32-bit value.
|
||||
pub fn set_xer(&mut self, val: u32) {
|
||||
self.xer_so = ((val >> 31) & 1) as u8;
|
||||
self.xer_ov = ((val >> 30) & 1) as u8;
|
||||
self.xer_ca = ((val >> 29) & 1) as u8;
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for PpcContext {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
819
xenia-rs/crates/xenia-cpu/src/decoder.rs
Normal file
819
xenia-rs/crates/xenia-cpu/src/decoder.rs
Normal file
@@ -0,0 +1,819 @@
|
||||
use crate::opcode::PpcOpcode;
|
||||
|
||||
/// Extract bits [a..=b] from a 32-bit value (PPC bit numbering: 0 = MSB).
|
||||
#[inline(always)]
|
||||
const fn extract_bits(v: u32, a: u32, b: u32) -> u32 {
|
||||
(v >> (32 - 1 - b)) & ((1 << (b - a + 1)) - 1)
|
||||
}
|
||||
|
||||
/// Decoded PPC instruction with extracted operand fields.
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
pub struct DecodedInstr {
|
||||
pub opcode: PpcOpcode,
|
||||
pub raw: u32,
|
||||
pub addr: u32,
|
||||
}
|
||||
|
||||
impl DecodedInstr {
|
||||
// Common field extractors (PPC bit numbering)
|
||||
|
||||
/// Primary opcode (bits 0-5)
|
||||
#[inline] pub fn op(&self) -> u32 { extract_bits(self.raw, 0, 5) }
|
||||
|
||||
/// rD/rS/rT (bits 6-10) - destination/source register
|
||||
#[inline] pub fn rd(&self) -> usize { extract_bits(self.raw, 6, 10) as usize }
|
||||
#[inline] pub fn rs(&self) -> usize { self.rd() }
|
||||
#[inline] pub fn rt(&self) -> usize { self.rd() }
|
||||
|
||||
/// rA (bits 11-15)
|
||||
#[inline] pub fn ra(&self) -> usize { extract_bits(self.raw, 11, 15) as usize }
|
||||
|
||||
/// rB (bits 16-20)
|
||||
#[inline] pub fn rb(&self) -> usize { extract_bits(self.raw, 16, 20) as usize }
|
||||
|
||||
/// rC (bits 21-25) - for 4-operand instructions
|
||||
#[inline] pub fn rc(&self) -> usize { extract_bits(self.raw, 21, 25) as usize }
|
||||
|
||||
/// SIMM/UIMM (bits 16-31) - signed/unsigned immediate
|
||||
#[inline] pub fn simm16(&self) -> i16 { (self.raw & 0xFFFF) as i16 }
|
||||
#[inline] pub fn uimm16(&self) -> u16 { (self.raw & 0xFFFF) as u16 }
|
||||
|
||||
/// D-form displacement (signed, bits 16-31)
|
||||
#[inline] pub fn d(&self) -> i32 { self.simm16() as i32 }
|
||||
|
||||
/// DS-form displacement (signed, bits 16-29, shifted left 2)
|
||||
#[inline] pub fn ds(&self) -> i32 { (self.raw & 0xFFFC) as i16 as i32 }
|
||||
|
||||
/// LI field for branch (bits 6-29, sign-extended, shifted left 2)
|
||||
#[inline] pub fn li(&self) -> i32 {
|
||||
let li = extract_bits(self.raw, 6, 29);
|
||||
// Sign-extend from 24 bits, then shift left 2
|
||||
let sign_extended = ((li as i32) << 8) >> 8;
|
||||
sign_extended << 2
|
||||
}
|
||||
|
||||
/// BD field for conditional branch (bits 16-29, sign-extended, shifted left 2)
|
||||
#[inline] pub fn bd(&self) -> i32 {
|
||||
let bd = extract_bits(self.raw, 16, 29);
|
||||
let sign_extended = ((bd as i32) << 18) >> 18;
|
||||
sign_extended << 2
|
||||
}
|
||||
|
||||
/// BO field (bits 6-10) - branch options
|
||||
#[inline] pub fn bo(&self) -> u32 { extract_bits(self.raw, 6, 10) }
|
||||
|
||||
/// BI field (bits 11-15) - branch condition
|
||||
#[inline] pub fn bi(&self) -> u32 { extract_bits(self.raw, 11, 15) }
|
||||
|
||||
/// AA bit (bit 30) - absolute address
|
||||
#[inline] pub fn aa(&self) -> bool { (self.raw >> 1) & 1 != 0 }
|
||||
|
||||
/// LK bit (bit 31) - link (update LR)
|
||||
#[inline] pub fn lk(&self) -> bool { self.raw & 1 != 0 }
|
||||
|
||||
/// Rc bit (bit 31) - record CR0
|
||||
#[inline] pub fn rc_bit(&self) -> bool { self.raw & 1 != 0 }
|
||||
|
||||
/// OE bit (bit 21) - overflow enable
|
||||
#[inline] pub fn oe(&self) -> bool { extract_bits(self.raw, 21, 21) != 0 }
|
||||
|
||||
/// MB, ME fields for rotate instructions
|
||||
#[inline] pub fn mb(&self) -> u32 { extract_bits(self.raw, 21, 25) }
|
||||
#[inline] pub fn me(&self) -> u32 { extract_bits(self.raw, 26, 30) }
|
||||
|
||||
/// SH field (bits 16-20) for shift instructions
|
||||
#[inline] pub fn sh(&self) -> u32 { extract_bits(self.raw, 16, 20) }
|
||||
|
||||
/// SH field for 64-bit shifts (bits 16-20 + bit 30)
|
||||
#[inline] pub fn sh64(&self) -> u32 {
|
||||
(extract_bits(self.raw, 16, 20) << 1) | extract_bits(self.raw, 30, 30)
|
||||
}
|
||||
|
||||
/// SPR field (bits 11-20, swapped halves)
|
||||
#[inline] pub fn spr(&self) -> u32 {
|
||||
let spr_raw = extract_bits(self.raw, 11, 20);
|
||||
((spr_raw & 0x1F) << 5) | ((spr_raw >> 5) & 0x1F)
|
||||
}
|
||||
|
||||
/// CRM field (bits 12-19) for mtcrf
|
||||
#[inline] pub fn crm(&self) -> u32 { extract_bits(self.raw, 12, 19) }
|
||||
|
||||
/// crfD (bits 6-8) - condition register field destination
|
||||
#[inline] pub fn crfd(&self) -> usize { extract_bits(self.raw, 6, 8) as usize }
|
||||
|
||||
/// crfS (bits 11-13)
|
||||
#[inline] pub fn crfs(&self) -> usize { extract_bits(self.raw, 11, 13) as usize }
|
||||
|
||||
/// L bit (bit 10) - 64-bit compare
|
||||
#[inline] pub fn l(&self) -> bool { extract_bits(self.raw, 10, 10) != 0 }
|
||||
|
||||
/// crbD (bits 6-10)
|
||||
#[inline] pub fn crbd(&self) -> u32 { extract_bits(self.raw, 6, 10) }
|
||||
/// crbA (bits 11-15)
|
||||
#[inline] pub fn crba(&self) -> u32 { extract_bits(self.raw, 11, 15) }
|
||||
/// crbB (bits 16-20)
|
||||
#[inline] pub fn crbb(&self) -> u32 { extract_bits(self.raw, 16, 20) }
|
||||
|
||||
// VMX128 field extractors
|
||||
|
||||
/// VA128 (bits 6-10, plus bit from 29)
|
||||
#[inline] pub fn va128(&self) -> usize {
|
||||
(extract_bits(self.raw, 6, 10) | (extract_bits(self.raw, 29, 29) << 5)) as usize
|
||||
}
|
||||
|
||||
/// VB128 (bits 16-20, plus bits from 28, 30)
|
||||
#[inline] pub fn vb128(&self) -> usize {
|
||||
(extract_bits(self.raw, 16, 20)
|
||||
| (extract_bits(self.raw, 28, 28) << 5)
|
||||
| (extract_bits(self.raw, 30, 30) << 6)) as usize
|
||||
}
|
||||
|
||||
/// VD128 (bits 6-10, plus bits from 21, 22)
|
||||
#[inline] pub fn vd128(&self) -> usize {
|
||||
(extract_bits(self.raw, 6, 10)
|
||||
| (extract_bits(self.raw, 21, 21) << 5)
|
||||
| (extract_bits(self.raw, 22, 22) << 6)) as usize
|
||||
}
|
||||
|
||||
/// VS128 - same encoding as VD128
|
||||
#[inline] pub fn vs128(&self) -> usize { self.vd128() }
|
||||
|
||||
/// NB field (bits 16-20) for lswi/stswi
|
||||
#[inline] pub fn nb(&self) -> u32 { extract_bits(self.raw, 16, 20) }
|
||||
}
|
||||
|
||||
/// Decode a 32-bit PPC instruction into its opcode.
|
||||
/// Direct translation of the C++ LookupOpcode from ppc_opcode_lookup_gen.cc.
|
||||
pub fn decode(raw: u32, addr: u32) -> DecodedInstr {
|
||||
let opcode = lookup_opcode(raw);
|
||||
DecodedInstr { opcode, raw, addr }
|
||||
}
|
||||
|
||||
fn lookup_opcode(code: u32) -> PpcOpcode {
|
||||
match extract_bits(code, 0, 5) {
|
||||
2 => PpcOpcode::tdi,
|
||||
3 => PpcOpcode::twi,
|
||||
4 => decode_op4(code),
|
||||
5 => decode_op5(code),
|
||||
6 => decode_op6(code),
|
||||
7 => PpcOpcode::mulli,
|
||||
8 => PpcOpcode::subficx,
|
||||
10 => PpcOpcode::cmpli,
|
||||
11 => PpcOpcode::cmpi,
|
||||
12 => PpcOpcode::addic,
|
||||
13 => PpcOpcode::addicx,
|
||||
14 => PpcOpcode::addi,
|
||||
15 => PpcOpcode::addis,
|
||||
16 => PpcOpcode::bcx,
|
||||
17 => PpcOpcode::sc,
|
||||
18 => PpcOpcode::bx,
|
||||
19 => decode_op19(code),
|
||||
20 => PpcOpcode::rlwimix,
|
||||
21 => PpcOpcode::rlwinmx,
|
||||
23 => PpcOpcode::rlwnmx,
|
||||
24 => PpcOpcode::ori,
|
||||
25 => PpcOpcode::oris,
|
||||
26 => PpcOpcode::xori,
|
||||
27 => PpcOpcode::xoris,
|
||||
28 => PpcOpcode::andix,
|
||||
29 => PpcOpcode::andisx,
|
||||
30 => decode_op30(code),
|
||||
31 => decode_op31(code),
|
||||
32 => PpcOpcode::lwz,
|
||||
33 => PpcOpcode::lwzu,
|
||||
34 => PpcOpcode::lbz,
|
||||
35 => PpcOpcode::lbzu,
|
||||
36 => PpcOpcode::stw,
|
||||
37 => PpcOpcode::stwu,
|
||||
38 => PpcOpcode::stb,
|
||||
39 => PpcOpcode::stbu,
|
||||
40 => PpcOpcode::lhz,
|
||||
41 => PpcOpcode::lhzu,
|
||||
42 => PpcOpcode::lha,
|
||||
43 => PpcOpcode::lhau,
|
||||
44 => PpcOpcode::sth,
|
||||
45 => PpcOpcode::sthu,
|
||||
46 => PpcOpcode::lmw,
|
||||
47 => PpcOpcode::stmw,
|
||||
48 => PpcOpcode::lfs,
|
||||
49 => PpcOpcode::lfsu,
|
||||
50 => PpcOpcode::lfd,
|
||||
51 => PpcOpcode::lfdu,
|
||||
52 => PpcOpcode::stfs,
|
||||
53 => PpcOpcode::stfsu,
|
||||
54 => PpcOpcode::stfd,
|
||||
55 => PpcOpcode::stfdu,
|
||||
58 => match extract_bits(code, 30, 31) {
|
||||
0b00 => PpcOpcode::ld,
|
||||
0b01 => PpcOpcode::ldu,
|
||||
0b10 => PpcOpcode::lwa,
|
||||
_ => PpcOpcode::Invalid,
|
||||
},
|
||||
59 => match extract_bits(code, 26, 30) {
|
||||
0b10010 => PpcOpcode::fdivsx,
|
||||
0b10100 => PpcOpcode::fsubsx,
|
||||
0b10101 => PpcOpcode::faddsx,
|
||||
0b10110 => PpcOpcode::fsqrtsx,
|
||||
0b11000 => PpcOpcode::fresx,
|
||||
0b11001 => PpcOpcode::fmulsx,
|
||||
0b11100 => PpcOpcode::fmsubsx,
|
||||
0b11101 => PpcOpcode::fmaddsx,
|
||||
0b11110 => PpcOpcode::fnmsubsx,
|
||||
0b11111 => PpcOpcode::fnmaddsx,
|
||||
_ => PpcOpcode::Invalid,
|
||||
},
|
||||
62 => match extract_bits(code, 30, 31) {
|
||||
0b00 => PpcOpcode::std,
|
||||
0b01 => PpcOpcode::stdu,
|
||||
_ => PpcOpcode::Invalid,
|
||||
},
|
||||
63 => decode_op63(code),
|
||||
_ => PpcOpcode::Invalid,
|
||||
}
|
||||
}
|
||||
|
||||
fn decode_op4(code: u32) -> PpcOpcode {
|
||||
// VMX128 load/store (op=4, bits 21-27 << 4 | bits 30-31)
|
||||
let key1 = (extract_bits(code, 21, 27) << 4) | extract_bits(code, 30, 31);
|
||||
match key1 {
|
||||
0b00000000011 => return PpcOpcode::lvsl128,
|
||||
0b00001000011 => return PpcOpcode::lvsr128,
|
||||
0b00010000011 => return PpcOpcode::lvewx128,
|
||||
0b00011000011 => return PpcOpcode::lvx128,
|
||||
0b00110000011 => return PpcOpcode::stvewx128,
|
||||
0b00111000011 => return PpcOpcode::stvx128,
|
||||
0b01011000011 => return PpcOpcode::lvxl128,
|
||||
0b01111000011 => return PpcOpcode::stvxl128,
|
||||
0b10000000011 => return PpcOpcode::lvlx128,
|
||||
0b10001000011 => return PpcOpcode::lvrx128,
|
||||
0b10100000011 => return PpcOpcode::stvlx128,
|
||||
0b10101000011 => return PpcOpcode::stvrx128,
|
||||
0b11000000011 => return PpcOpcode::lvlxl128,
|
||||
0b11001000011 => return PpcOpcode::lvrxl128,
|
||||
0b11100000011 => return PpcOpcode::stvlxl128,
|
||||
0b11101000011 => return PpcOpcode::stvrxl128,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// Standard VMX (op=4, bits 21-31)
|
||||
let key2 = extract_bits(code, 21, 31);
|
||||
match key2 {
|
||||
0b00000000000 => return PpcOpcode::vaddubm,
|
||||
0b00000000010 => return PpcOpcode::vmaxub,
|
||||
0b00000000100 => return PpcOpcode::vrlb,
|
||||
0b00000001000 => return PpcOpcode::vmuloub,
|
||||
0b00000001010 => return PpcOpcode::vaddfp,
|
||||
0b00000001100 => return PpcOpcode::vmrghb,
|
||||
0b00000001110 => return PpcOpcode::vpkuhum,
|
||||
0b00001000000 => return PpcOpcode::vadduhm,
|
||||
0b00001000010 => return PpcOpcode::vmaxuh,
|
||||
0b00001000100 => return PpcOpcode::vrlh,
|
||||
0b00001001000 => return PpcOpcode::vmulouh,
|
||||
0b00001001010 => return PpcOpcode::vsubfp,
|
||||
0b00001001100 => return PpcOpcode::vmrghh,
|
||||
0b00001001110 => return PpcOpcode::vpkuwum,
|
||||
0b00010000000 => return PpcOpcode::vadduwm,
|
||||
0b00010000010 => return PpcOpcode::vmaxuw,
|
||||
0b00010000100 => return PpcOpcode::vrlw,
|
||||
0b00010001100 => return PpcOpcode::vmrghw,
|
||||
0b00010001110 => return PpcOpcode::vpkuhus,
|
||||
0b00011001110 => return PpcOpcode::vpkuwus,
|
||||
0b00100000010 => return PpcOpcode::vmaxsb,
|
||||
0b00100000100 => return PpcOpcode::vslb,
|
||||
0b00100001000 => return PpcOpcode::vmulosb,
|
||||
0b00100001010 => return PpcOpcode::vrefp,
|
||||
0b00100001100 => return PpcOpcode::vmrglb,
|
||||
0b00100001110 => return PpcOpcode::vpkshus,
|
||||
0b00101000010 => return PpcOpcode::vmaxsh,
|
||||
0b00101000100 => return PpcOpcode::vslh,
|
||||
0b00101001000 => return PpcOpcode::vmulosh,
|
||||
0b00101001010 => return PpcOpcode::vrsqrtefp,
|
||||
0b00101001100 => return PpcOpcode::vmrglh,
|
||||
0b00101001110 => return PpcOpcode::vpkswus,
|
||||
0b00110000000 => return PpcOpcode::vaddcuw,
|
||||
0b00110000010 => return PpcOpcode::vmaxsw,
|
||||
0b00110000100 => return PpcOpcode::vslw,
|
||||
0b00110001010 => return PpcOpcode::vexptefp,
|
||||
0b00110001100 => return PpcOpcode::vmrglw,
|
||||
0b00110001110 => return PpcOpcode::vpkshss,
|
||||
0b00111000100 => return PpcOpcode::vsl,
|
||||
0b00111001010 => return PpcOpcode::vlogefp,
|
||||
0b00111001110 => return PpcOpcode::vpkswss,
|
||||
0b01000000000 => return PpcOpcode::vaddubs,
|
||||
0b01000000010 => return PpcOpcode::vminub,
|
||||
0b01000000100 => return PpcOpcode::vsrb,
|
||||
0b01000001000 => return PpcOpcode::vmuleub,
|
||||
0b01000001010 => return PpcOpcode::vrfin,
|
||||
0b01000001100 => return PpcOpcode::vspltb,
|
||||
0b01000001110 => return PpcOpcode::vupkhsb,
|
||||
0b01001000000 => return PpcOpcode::vadduhs,
|
||||
0b01001000010 => return PpcOpcode::vminuh,
|
||||
0b01001000100 => return PpcOpcode::vsrh,
|
||||
0b01001001000 => return PpcOpcode::vmuleuh,
|
||||
0b01001001010 => return PpcOpcode::vrfiz,
|
||||
0b01001001100 => return PpcOpcode::vsplth,
|
||||
0b01001001110 => return PpcOpcode::vupkhsh,
|
||||
0b01010000000 => return PpcOpcode::vadduws,
|
||||
0b01010000010 => return PpcOpcode::vminuw,
|
||||
0b01010000100 => return PpcOpcode::vsrw,
|
||||
0b01010001010 => return PpcOpcode::vrfip,
|
||||
0b01010001100 => return PpcOpcode::vspltw,
|
||||
0b01010001110 => return PpcOpcode::vupklsb,
|
||||
0b01011000100 => return PpcOpcode::vsr,
|
||||
0b01011001010 => return PpcOpcode::vrfim,
|
||||
0b01011001110 => return PpcOpcode::vupklsh,
|
||||
0b01100000000 => return PpcOpcode::vaddsbs,
|
||||
0b01100000010 => return PpcOpcode::vminsb,
|
||||
0b01100000100 => return PpcOpcode::vsrab,
|
||||
0b01100001000 => return PpcOpcode::vmulesb,
|
||||
0b01100001010 => return PpcOpcode::vcfux,
|
||||
0b01100001100 => return PpcOpcode::vspltisb,
|
||||
0b01100001110 => return PpcOpcode::vpkpx,
|
||||
0b01101000000 => return PpcOpcode::vaddshs,
|
||||
0b01101000010 => return PpcOpcode::vminsh,
|
||||
0b01101000100 => return PpcOpcode::vsrah,
|
||||
0b01101001000 => return PpcOpcode::vmulesh,
|
||||
0b01101001010 => return PpcOpcode::vcfsx,
|
||||
0b01101001100 => return PpcOpcode::vspltish,
|
||||
0b01101001110 => return PpcOpcode::vupkhpx,
|
||||
0b01110000000 => return PpcOpcode::vaddsws,
|
||||
0b01110000010 => return PpcOpcode::vminsw,
|
||||
0b01110000100 => return PpcOpcode::vsraw,
|
||||
0b01110001010 => return PpcOpcode::vctuxs,
|
||||
0b01110001100 => return PpcOpcode::vspltisw,
|
||||
0b01111001010 => return PpcOpcode::vctsxs,
|
||||
0b01111001110 => return PpcOpcode::vupklpx,
|
||||
0b10000000000 => return PpcOpcode::vsububm,
|
||||
0b10000000010 => return PpcOpcode::vavgub,
|
||||
0b10000000100 => return PpcOpcode::vand,
|
||||
0b10000001010 => return PpcOpcode::vmaxfp,
|
||||
0b10000001100 => return PpcOpcode::vslo,
|
||||
0b10001000000 => return PpcOpcode::vsubuhm,
|
||||
0b10001000010 => return PpcOpcode::vavguh,
|
||||
0b10001000100 => return PpcOpcode::vandc,
|
||||
0b10001001010 => return PpcOpcode::vminfp,
|
||||
0b10001001100 => return PpcOpcode::vsro,
|
||||
0b10010000000 => return PpcOpcode::vsubuwm,
|
||||
0b10010000010 => return PpcOpcode::vavguw,
|
||||
0b10010000100 => return PpcOpcode::vor,
|
||||
0b10011000100 => return PpcOpcode::vxor,
|
||||
0b10100000010 => return PpcOpcode::vavgsb,
|
||||
0b10100000100 => return PpcOpcode::vnor,
|
||||
0b10101000010 => return PpcOpcode::vavgsh,
|
||||
0b10110000000 => return PpcOpcode::vsubcuw,
|
||||
0b10110000010 => return PpcOpcode::vavgsw,
|
||||
0b11000000000 => return PpcOpcode::vsububs,
|
||||
0b11000000100 => return PpcOpcode::mfvscr,
|
||||
0b11000001000 => return PpcOpcode::vsum4ubs,
|
||||
0b11001000000 => return PpcOpcode::vsubuhs,
|
||||
0b11001000100 => return PpcOpcode::mtvscr,
|
||||
0b11001001000 => return PpcOpcode::vsum4shs,
|
||||
0b11010000000 => return PpcOpcode::vsubuws,
|
||||
0b11010001000 => return PpcOpcode::vsum2sws,
|
||||
0b11100000000 => return PpcOpcode::vsubsbs,
|
||||
0b11100001000 => return PpcOpcode::vsum4sbs,
|
||||
0b11101000000 => return PpcOpcode::vsubshs,
|
||||
0b11110000000 => return PpcOpcode::vsubsws,
|
||||
0b11110001000 => return PpcOpcode::vsumsws,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// VMX compare (op=4, bits 22-31)
|
||||
let key3 = extract_bits(code, 22, 31);
|
||||
match key3 {
|
||||
0b0000000110 => return PpcOpcode::vcmpequb,
|
||||
0b0001000110 => return PpcOpcode::vcmpequh,
|
||||
0b0010000110 => return PpcOpcode::vcmpequw,
|
||||
0b0011000110 => return PpcOpcode::vcmpeqfp,
|
||||
0b0111000110 => return PpcOpcode::vcmpgefp,
|
||||
0b1000000110 => return PpcOpcode::vcmpgtub,
|
||||
0b1001000110 => return PpcOpcode::vcmpgtuh,
|
||||
0b1010000110 => return PpcOpcode::vcmpgtuw,
|
||||
0b1011000110 => return PpcOpcode::vcmpgtfp,
|
||||
0b1100000110 => return PpcOpcode::vcmpgtsb,
|
||||
0b1101000110 => return PpcOpcode::vcmpgtsh,
|
||||
0b1110000110 => return PpcOpcode::vcmpgtsw,
|
||||
0b1111000110 => return PpcOpcode::vcmpbfp,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// VMX 4-operand (op=4, bits 26-31)
|
||||
let key4 = extract_bits(code, 26, 31);
|
||||
match key4 {
|
||||
0b100000 => return PpcOpcode::vmhaddshs,
|
||||
0b100001 => return PpcOpcode::vmhraddshs,
|
||||
0b100010 => return PpcOpcode::vmladduhm,
|
||||
0b100100 => return PpcOpcode::vmsumubm,
|
||||
0b100101 => return PpcOpcode::vmsummbm,
|
||||
0b100110 => return PpcOpcode::vmsumuhm,
|
||||
0b100111 => return PpcOpcode::vmsumuhs,
|
||||
0b101000 => return PpcOpcode::vmsumshm,
|
||||
0b101001 => return PpcOpcode::vmsumshs,
|
||||
0b101010 => return PpcOpcode::vsel,
|
||||
0b101011 => return PpcOpcode::vperm,
|
||||
0b101100 => return PpcOpcode::vsldoi,
|
||||
0b101110 => return PpcOpcode::vmaddfp,
|
||||
0b101111 => return PpcOpcode::vnmsubfp,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// vsldoi128 (op=4, bit 27)
|
||||
if extract_bits(code, 27, 27) == 1 {
|
||||
return PpcOpcode::vsldoi128;
|
||||
}
|
||||
|
||||
PpcOpcode::Invalid
|
||||
}
|
||||
|
||||
fn decode_op5(code: u32) -> PpcOpcode {
|
||||
// vperm128 (op=5, bits 22,27)
|
||||
let key1 = (extract_bits(code, 22, 22) << 5) | extract_bits(code, 27, 27);
|
||||
if key1 == 0b000000 {
|
||||
return PpcOpcode::vperm128;
|
||||
}
|
||||
|
||||
let key2 = (extract_bits(code, 22, 25) << 2) | extract_bits(code, 27, 27);
|
||||
match key2 {
|
||||
0b000001 => PpcOpcode::vaddfp128,
|
||||
0b000101 => PpcOpcode::vsubfp128,
|
||||
0b001001 => PpcOpcode::vmulfp128,
|
||||
0b001101 => PpcOpcode::vmaddfp128,
|
||||
0b010001 => PpcOpcode::vmaddcfp128,
|
||||
0b010101 => PpcOpcode::vnmsubfp128,
|
||||
0b011001 => PpcOpcode::vmsum3fp128,
|
||||
0b011101 => PpcOpcode::vmsum4fp128,
|
||||
0b100000 => PpcOpcode::vpkshss128,
|
||||
0b100001 => PpcOpcode::vand128,
|
||||
0b100100 => PpcOpcode::vpkshus128,
|
||||
0b100101 => PpcOpcode::vandc128,
|
||||
0b101000 => PpcOpcode::vpkswss128,
|
||||
0b101001 => PpcOpcode::vnor128,
|
||||
0b101100 => PpcOpcode::vpkswus128,
|
||||
0b101101 => PpcOpcode::vor128,
|
||||
0b110000 => PpcOpcode::vpkuhum128,
|
||||
0b110001 => PpcOpcode::vxor128,
|
||||
0b110100 => PpcOpcode::vpkuhus128,
|
||||
0b110101 => PpcOpcode::vsel128,
|
||||
0b111000 => PpcOpcode::vpkuwum128,
|
||||
0b111001 => PpcOpcode::vslo128,
|
||||
0b111100 => PpcOpcode::vpkuwus128,
|
||||
0b111101 => PpcOpcode::vsro128,
|
||||
_ => PpcOpcode::Invalid,
|
||||
}
|
||||
}
|
||||
|
||||
fn decode_op6(code: u32) -> PpcOpcode {
|
||||
// vpermwi128
|
||||
let key1 = (extract_bits(code, 21, 22) << 5) | extract_bits(code, 26, 27);
|
||||
if key1 == 0b0100001 {
|
||||
return PpcOpcode::vpermwi128;
|
||||
}
|
||||
|
||||
// vpkd3d128, vrlimi128
|
||||
let key2 = (extract_bits(code, 21, 23) << 4) | extract_bits(code, 26, 27);
|
||||
match key2 {
|
||||
0b1100001 => return PpcOpcode::vpkd3d128,
|
||||
0b1110001 => return PpcOpcode::vrlimi128,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// Unary VMX128 ops
|
||||
let key3 = extract_bits(code, 21, 27);
|
||||
match key3 {
|
||||
0b0100011 => return PpcOpcode::vcfpsxws128,
|
||||
0b0100111 => return PpcOpcode::vcfpuxws128,
|
||||
0b0101011 => return PpcOpcode::vcsxwfp128,
|
||||
0b0101111 => return PpcOpcode::vcuxwfp128,
|
||||
0b0110011 => return PpcOpcode::vrfim128,
|
||||
0b0110111 => return PpcOpcode::vrfin128,
|
||||
0b0111011 => return PpcOpcode::vrfip128,
|
||||
0b0111111 => return PpcOpcode::vrfiz128,
|
||||
0b1100011 => return PpcOpcode::vrefp128,
|
||||
0b1100111 => return PpcOpcode::vrsqrtefp128,
|
||||
0b1101011 => return PpcOpcode::vexptefp128,
|
||||
0b1101111 => return PpcOpcode::vlogefp128,
|
||||
0b1110011 => return PpcOpcode::vspltw128,
|
||||
0b1110111 => return PpcOpcode::vspltisw128,
|
||||
0b1111111 => return PpcOpcode::vupkd3d128,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// VMX128 compare
|
||||
let key4 = (extract_bits(code, 22, 24) << 3) | extract_bits(code, 27, 27);
|
||||
match key4 {
|
||||
0b000000 => return PpcOpcode::vcmpeqfp128,
|
||||
0b001000 => return PpcOpcode::vcmpgefp128,
|
||||
0b010000 => return PpcOpcode::vcmpgtfp128,
|
||||
0b011000 => return PpcOpcode::vcmpbfp128,
|
||||
0b100000 => return PpcOpcode::vcmpequw128,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// VMX128 shift/merge
|
||||
let key5 = (extract_bits(code, 22, 25) << 2) | extract_bits(code, 27, 27);
|
||||
match key5 {
|
||||
0b000101 => return PpcOpcode::vrlw128,
|
||||
0b001101 => return PpcOpcode::vslw128,
|
||||
0b010101 => return PpcOpcode::vsraw128,
|
||||
0b011101 => return PpcOpcode::vsrw128,
|
||||
0b101000 => return PpcOpcode::vmaxfp128,
|
||||
0b101100 => return PpcOpcode::vminfp128,
|
||||
0b110000 => return PpcOpcode::vmrghw128,
|
||||
0b110100 => return PpcOpcode::vmrglw128,
|
||||
0b111000 => return PpcOpcode::vupkhsb128,
|
||||
0b111100 => return PpcOpcode::vupklsb128,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
PpcOpcode::Invalid
|
||||
}
|
||||
|
||||
fn decode_op19(code: u32) -> PpcOpcode {
|
||||
match extract_bits(code, 21, 30) {
|
||||
0b0000000000 => PpcOpcode::mcrf,
|
||||
0b0000010000 => PpcOpcode::bclrx,
|
||||
0b0000100001 => PpcOpcode::crnor,
|
||||
0b0010000001 => PpcOpcode::crandc,
|
||||
0b0010010110 => PpcOpcode::isync,
|
||||
0b0011000001 => PpcOpcode::crxor,
|
||||
0b0011100001 => PpcOpcode::crnand,
|
||||
0b0100000001 => PpcOpcode::crand,
|
||||
0b0100100001 => PpcOpcode::creqv,
|
||||
0b0110100001 => PpcOpcode::crorc,
|
||||
0b0111000001 => PpcOpcode::cror,
|
||||
0b1000010000 => PpcOpcode::bcctrx,
|
||||
_ => PpcOpcode::Invalid,
|
||||
}
|
||||
}
|
||||
|
||||
fn decode_op30(code: u32) -> PpcOpcode {
|
||||
match extract_bits(code, 27, 29) {
|
||||
0b000 => PpcOpcode::rldiclx,
|
||||
0b001 => PpcOpcode::rldicrx,
|
||||
0b010 => PpcOpcode::rldicx,
|
||||
0b011 => PpcOpcode::rldimix,
|
||||
_ => match extract_bits(code, 27, 30) {
|
||||
0b1000 => PpcOpcode::rldclx,
|
||||
0b1001 => PpcOpcode::rldcrx,
|
||||
_ => PpcOpcode::Invalid,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
fn decode_op31(code: u32) -> PpcOpcode {
|
||||
// sradix has a unique 10-bit key (bits 21-29)
|
||||
if extract_bits(code, 21, 29) == 0b110011101 {
|
||||
return PpcOpcode::sradix;
|
||||
}
|
||||
|
||||
// Main op31 table (bits 21-30)
|
||||
let key = extract_bits(code, 21, 30);
|
||||
match key {
|
||||
0b0000000000 => return PpcOpcode::cmp,
|
||||
0b0000000100 => return PpcOpcode::tw,
|
||||
0b0000000110 => return PpcOpcode::lvsl,
|
||||
0b0000000111 => return PpcOpcode::lvebx,
|
||||
0b0000010011 => return PpcOpcode::mfcr,
|
||||
0b0000010100 => return PpcOpcode::lwarx,
|
||||
0b0000010101 => return PpcOpcode::ldx,
|
||||
0b0000010111 => return PpcOpcode::lwzx,
|
||||
0b0000011000 => return PpcOpcode::slwx,
|
||||
0b0000011010 => return PpcOpcode::cntlzwx,
|
||||
0b0000011011 => return PpcOpcode::sldx,
|
||||
0b0000011100 => return PpcOpcode::andx,
|
||||
0b0000100000 => return PpcOpcode::cmpl,
|
||||
0b0000100110 => return PpcOpcode::lvsr,
|
||||
0b0000100111 => return PpcOpcode::lvehx,
|
||||
0b0000110101 => return PpcOpcode::ldux,
|
||||
0b0000110110 => return PpcOpcode::dcbst,
|
||||
0b0000110111 => return PpcOpcode::lwzux,
|
||||
0b0000111010 => return PpcOpcode::cntlzdx,
|
||||
0b0000111100 => return PpcOpcode::andcx,
|
||||
0b0001000100 => return PpcOpcode::td,
|
||||
0b0001000111 => return PpcOpcode::lvewx,
|
||||
0b0001010011 => return PpcOpcode::mfmsr,
|
||||
0b0001010100 => return PpcOpcode::ldarx,
|
||||
0b0001010110 => return PpcOpcode::dcbf,
|
||||
0b0001010111 => return PpcOpcode::lbzx,
|
||||
0b0001100111 => return PpcOpcode::lvx,
|
||||
0b0001110111 => return PpcOpcode::lbzux,
|
||||
0b0001111100 => return PpcOpcode::norx,
|
||||
0b0010000111 => return PpcOpcode::stvebx,
|
||||
0b0010010000 => return PpcOpcode::mtcrf,
|
||||
0b0010010010 => return PpcOpcode::mtmsr,
|
||||
0b0010010101 => return PpcOpcode::stdx,
|
||||
0b0010010110 => return PpcOpcode::stwcx,
|
||||
0b0010010111 => return PpcOpcode::stwx,
|
||||
0b0010100111 => return PpcOpcode::stvehx,
|
||||
0b0010110010 => return PpcOpcode::mtmsrd,
|
||||
0b0010110101 => return PpcOpcode::stdux,
|
||||
0b0010110111 => return PpcOpcode::stwux,
|
||||
0b0011000111 => return PpcOpcode::stvewx,
|
||||
0b0011010110 => return PpcOpcode::stdcx,
|
||||
0b0011010111 => return PpcOpcode::stbx,
|
||||
0b0011100111 => return PpcOpcode::stvx,
|
||||
0b0011110110 => return PpcOpcode::dcbtst,
|
||||
0b0011110111 => return PpcOpcode::stbux,
|
||||
0b0100010110 => return PpcOpcode::dcbt,
|
||||
0b0100010111 => return PpcOpcode::lhzx,
|
||||
0b0100011100 => return PpcOpcode::eqvx,
|
||||
0b0100110111 => return PpcOpcode::lhzux,
|
||||
0b0100111100 => return PpcOpcode::xorx,
|
||||
0b0101010011 => return PpcOpcode::mfspr,
|
||||
0b0101010101 => return PpcOpcode::lwax,
|
||||
0b0101010111 => return PpcOpcode::lhax,
|
||||
0b0101100111 => return PpcOpcode::lvxl,
|
||||
0b0101110011 => return PpcOpcode::mftb,
|
||||
0b0101110101 => return PpcOpcode::lwaux,
|
||||
0b0101110111 => return PpcOpcode::lhaux,
|
||||
0b0110010111 => return PpcOpcode::sthx,
|
||||
0b0110011100 => return PpcOpcode::orcx,
|
||||
0b0110110111 => return PpcOpcode::sthux,
|
||||
0b0110111100 => return PpcOpcode::orx,
|
||||
0b0111010011 => return PpcOpcode::mtspr,
|
||||
0b0111010110 => return PpcOpcode::dcbi,
|
||||
0b0111011100 => return PpcOpcode::nandx,
|
||||
0b0111100111 => return PpcOpcode::stvxl,
|
||||
0b1000000000 => return PpcOpcode::mcrxr,
|
||||
0b1000000111 => return PpcOpcode::lvlx,
|
||||
0b1000010100 => return PpcOpcode::ldbrx,
|
||||
0b1000010101 => return PpcOpcode::lswx,
|
||||
0b1000010110 => return PpcOpcode::lwbrx,
|
||||
0b1000010111 => return PpcOpcode::lfsx,
|
||||
0b1000011000 => return PpcOpcode::srwx,
|
||||
0b1000011011 => return PpcOpcode::srdx,
|
||||
0b1000100111 => return PpcOpcode::lvrx,
|
||||
0b1000110111 => return PpcOpcode::lfsux,
|
||||
0b1001010101 => return PpcOpcode::lswi,
|
||||
0b1001010110 => return PpcOpcode::sync,
|
||||
0b1001010111 => return PpcOpcode::lfdx,
|
||||
0b1001110111 => return PpcOpcode::lfdux,
|
||||
0b1010000111 => return PpcOpcode::stvlx,
|
||||
0b1010010100 => return PpcOpcode::stdbrx,
|
||||
0b1010010101 => return PpcOpcode::stswx,
|
||||
0b1010010110 => return PpcOpcode::stwbrx,
|
||||
0b1010010111 => return PpcOpcode::stfsx,
|
||||
0b1010100111 => return PpcOpcode::stvrx,
|
||||
0b1010110111 => return PpcOpcode::stfsux,
|
||||
0b1011010101 => return PpcOpcode::stswi,
|
||||
0b1011010111 => return PpcOpcode::stfdx,
|
||||
0b1011110111 => return PpcOpcode::stfdux,
|
||||
0b1100000111 => return PpcOpcode::lvlxl,
|
||||
0b1100010110 => return PpcOpcode::lhbrx,
|
||||
0b1100011000 => return PpcOpcode::srawx,
|
||||
0b1100011010 => return PpcOpcode::sradx,
|
||||
0b1100100111 => return PpcOpcode::lvrxl,
|
||||
0b1100111000 => return PpcOpcode::srawix,
|
||||
0b1101010110 => return PpcOpcode::eieio,
|
||||
0b1110000111 => return PpcOpcode::stvlxl,
|
||||
0b1110010110 => return PpcOpcode::sthbrx,
|
||||
0b1110011010 => return PpcOpcode::extshx,
|
||||
0b1110100111 => return PpcOpcode::stvrxl,
|
||||
0b1110111010 => return PpcOpcode::extsbx,
|
||||
0b1111010110 => return PpcOpcode::icbi,
|
||||
0b1111010111 => return PpcOpcode::stfiwx,
|
||||
0b1111011010 => return PpcOpcode::extswx,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// Arithmetic op31 (bits 22-30)
|
||||
let key2 = extract_bits(code, 22, 30);
|
||||
match key2 {
|
||||
0b000001000 => return PpcOpcode::subfcx,
|
||||
0b000001001 => return PpcOpcode::mulhdux,
|
||||
0b000001010 => return PpcOpcode::addcx,
|
||||
0b000001011 => return PpcOpcode::mulhwux,
|
||||
0b000101000 => return PpcOpcode::subfx,
|
||||
0b001001001 => return PpcOpcode::mulhdx,
|
||||
0b001001011 => return PpcOpcode::mulhwx,
|
||||
0b001101000 => return PpcOpcode::negx,
|
||||
0b010001000 => return PpcOpcode::subfex,
|
||||
0b010001010 => return PpcOpcode::addex,
|
||||
0b011001000 => return PpcOpcode::subfzex,
|
||||
0b011001010 => return PpcOpcode::addzex,
|
||||
0b011101000 => return PpcOpcode::subfmex,
|
||||
0b011101001 => return PpcOpcode::mulldx,
|
||||
0b011101010 => return PpcOpcode::addmex,
|
||||
0b011101011 => return PpcOpcode::mullwx,
|
||||
0b100001010 => return PpcOpcode::addx,
|
||||
0b111001001 => return PpcOpcode::divdux,
|
||||
0b111001011 => return PpcOpcode::divwux,
|
||||
0b111101001 => return PpcOpcode::divdx,
|
||||
0b111101011 => return PpcOpcode::divwx,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// dcbz/dcbz128 special case
|
||||
let key3 = (extract_bits(code, 6, 10) << 20) | (extract_bits(code, 21, 30));
|
||||
match key3 {
|
||||
0b0000000000000001111110110 => return PpcOpcode::dcbz,
|
||||
0b0000100000000001111110110 => return PpcOpcode::dcbz128,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
PpcOpcode::Invalid
|
||||
}
|
||||
|
||||
fn decode_op63(code: u32) -> PpcOpcode {
|
||||
// Primary op63 table (bits 21-30)
|
||||
match extract_bits(code, 21, 30) {
|
||||
0b0000000000 => return PpcOpcode::fcmpu,
|
||||
0b0000001100 => return PpcOpcode::frspx,
|
||||
0b0000001110 => return PpcOpcode::fctiwx,
|
||||
0b0000001111 => return PpcOpcode::fctiwzx,
|
||||
0b0000100000 => return PpcOpcode::fcmpo,
|
||||
0b0000100110 => return PpcOpcode::mtfsb1x,
|
||||
0b0000101000 => return PpcOpcode::fnegx,
|
||||
0b0001000000 => return PpcOpcode::mcrfs,
|
||||
0b0001000110 => return PpcOpcode::mtfsb0x,
|
||||
0b0001001000 => return PpcOpcode::fmrx,
|
||||
0b0010000110 => return PpcOpcode::mtfsfix,
|
||||
0b0010001000 => return PpcOpcode::fnabsx,
|
||||
0b0100001000 => return PpcOpcode::fabsx,
|
||||
0b1001000111 => return PpcOpcode::mffsx,
|
||||
0b1011000111 => return PpcOpcode::mtfsfx,
|
||||
0b1100101110 => return PpcOpcode::fctidx,
|
||||
0b1100101111 => return PpcOpcode::fctidzx,
|
||||
0b1101001110 => return PpcOpcode::fcfidx,
|
||||
_ => {}
|
||||
}
|
||||
|
||||
// FPU arithmetic (bits 26-30)
|
||||
match extract_bits(code, 26, 30) {
|
||||
0b10010 => PpcOpcode::fdivx,
|
||||
0b10100 => PpcOpcode::fsubx,
|
||||
0b10101 => PpcOpcode::faddx,
|
||||
0b10110 => PpcOpcode::fsqrtx,
|
||||
0b10111 => PpcOpcode::fselx,
|
||||
0b11001 => PpcOpcode::fmulx,
|
||||
0b11010 => PpcOpcode::frsqrtex,
|
||||
0b11100 => PpcOpcode::fmsubx,
|
||||
0b11101 => PpcOpcode::fmaddx,
|
||||
0b11110 => PpcOpcode::fnmsubx,
|
||||
0b11111 => PpcOpcode::fnmaddx,
|
||||
_ => PpcOpcode::Invalid,
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_decode_addi() {
|
||||
// addi r3, r1, 0x10 => opcode 14, rD=3, rA=1, SIMM=0x10
|
||||
let raw: u32 = (14 << 26) | (3 << 21) | (1 << 16) | 0x10;
|
||||
let instr = decode(raw, 0);
|
||||
assert_eq!(instr.opcode, PpcOpcode::addi);
|
||||
assert_eq!(instr.rd(), 3);
|
||||
assert_eq!(instr.ra(), 1);
|
||||
assert_eq!(instr.simm16(), 0x10);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_decode_lwz() {
|
||||
// lwz r5, 0x20(r1) => opcode 32
|
||||
let raw: u32 = (32 << 26) | (5 << 21) | (1 << 16) | 0x20;
|
||||
let instr = decode(raw, 0);
|
||||
assert_eq!(instr.opcode, PpcOpcode::lwz);
|
||||
assert_eq!(instr.rd(), 5);
|
||||
assert_eq!(instr.ra(), 1);
|
||||
assert_eq!(instr.d(), 0x20);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_decode_branch() {
|
||||
// b +0x100 => opcode 18, LI=0x40 (shifted left 2 = 0x100), AA=0, LK=0
|
||||
let raw: u32 = (18 << 26) | (0x40 << 2);
|
||||
let instr = decode(raw, 0);
|
||||
assert_eq!(instr.opcode, PpcOpcode::bx);
|
||||
assert_eq!(instr.li(), 0x100);
|
||||
assert!(!instr.aa());
|
||||
assert!(!instr.lk());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_decode_stw() {
|
||||
// stw r7, 0x8(r2)
|
||||
let raw: u32 = (36 << 26) | (7 << 21) | (2 << 16) | 0x8;
|
||||
let instr = decode(raw, 0);
|
||||
assert_eq!(instr.opcode, PpcOpcode::stw);
|
||||
assert_eq!(instr.rs(), 7);
|
||||
assert_eq!(instr.ra(), 2);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_decode_ori_nop() {
|
||||
// ori r0, r0, 0 = NOP
|
||||
let raw: u32 = (24 << 26);
|
||||
let instr = decode(raw, 0);
|
||||
assert_eq!(instr.opcode, PpcOpcode::ori);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_extract_bits() {
|
||||
assert_eq!(extract_bits(0xFFFF_FFFF, 0, 5), 0x3F);
|
||||
assert_eq!(extract_bits(0x8000_0000, 0, 0), 1);
|
||||
assert_eq!(extract_bits(0x0000_0001, 31, 31), 1);
|
||||
}
|
||||
}
|
||||
276
xenia-rs/crates/xenia-cpu/src/disasm.rs
Normal file
276
xenia-rs/crates/xenia-cpu/src/disasm.rs
Normal file
@@ -0,0 +1,276 @@
|
||||
use crate::decoder::DecodedInstr;
|
||||
use crate::opcode::PpcOpcode;
|
||||
use std::fmt::Write;
|
||||
|
||||
/// Disassemble a decoded instruction into PPC assembly text.
|
||||
pub fn disassemble(instr: &DecodedInstr) -> String {
|
||||
let mut out = String::new();
|
||||
match instr.opcode {
|
||||
// Branch instructions
|
||||
PpcOpcode::bx => {
|
||||
let target = if instr.aa() {
|
||||
instr.li() as u32
|
||||
} else {
|
||||
instr.addr.wrapping_add(instr.li() as u32)
|
||||
};
|
||||
let mnemonic = if instr.lk() { "bl" } else { "b" };
|
||||
write!(out, "{} 0x{:08X}", mnemonic, target).unwrap();
|
||||
}
|
||||
PpcOpcode::bcx => {
|
||||
let bo = instr.bo();
|
||||
let bi = instr.bi();
|
||||
let target = if instr.aa() {
|
||||
instr.bd() as u32
|
||||
} else {
|
||||
instr.addr.wrapping_add(instr.bd() as u32)
|
||||
};
|
||||
let mnemonic = if instr.lk() { "bcl" } else { "bc" };
|
||||
write!(out, "{} {},{},0x{:08X}", mnemonic, bo, bi, target).unwrap();
|
||||
}
|
||||
PpcOpcode::bclrx => {
|
||||
let mnemonic = if instr.lk() { "bclrl" } else { "bclr" };
|
||||
write!(out, "{} {},{}", mnemonic, instr.bo(), instr.bi()).unwrap();
|
||||
}
|
||||
PpcOpcode::bcctrx => {
|
||||
let mnemonic = if instr.lk() { "bcctrl" } else { "bcctr" };
|
||||
write!(out, "{} {},{}", mnemonic, instr.bo(), instr.bi()).unwrap();
|
||||
}
|
||||
|
||||
// System call
|
||||
PpcOpcode::sc => {
|
||||
write!(out, "sc").unwrap();
|
||||
}
|
||||
|
||||
// D-form load/store
|
||||
PpcOpcode::lwz | PpcOpcode::lwzu | PpcOpcode::lbz | PpcOpcode::lbzu |
|
||||
PpcOpcode::lhz | PpcOpcode::lhzu | PpcOpcode::lha | PpcOpcode::lhau |
|
||||
PpcOpcode::lfs | PpcOpcode::lfsu | PpcOpcode::lfd | PpcOpcode::lfdu => {
|
||||
write!(out, "{:?} r{},{}(r{})", instr.opcode, instr.rd(), instr.d(), instr.ra()).unwrap();
|
||||
}
|
||||
PpcOpcode::stw | PpcOpcode::stwu | PpcOpcode::stb | PpcOpcode::stbu |
|
||||
PpcOpcode::sth | PpcOpcode::sthu |
|
||||
PpcOpcode::stfs | PpcOpcode::stfsu | PpcOpcode::stfd | PpcOpcode::stfdu => {
|
||||
write!(out, "{:?} r{},{}(r{})", instr.opcode, instr.rs(), instr.d(), instr.ra()).unwrap();
|
||||
}
|
||||
|
||||
// D-form immediate ALU
|
||||
PpcOpcode::addi | PpcOpcode::addis | PpcOpcode::addic | PpcOpcode::addicx |
|
||||
PpcOpcode::subficx | PpcOpcode::mulli => {
|
||||
write!(out, "{:?} r{},r{},{}", instr.opcode, instr.rd(), instr.ra(), instr.simm16()).unwrap();
|
||||
}
|
||||
|
||||
// D-form immediate logical
|
||||
PpcOpcode::ori | PpcOpcode::oris | PpcOpcode::xori | PpcOpcode::xoris |
|
||||
PpcOpcode::andix | PpcOpcode::andisx => {
|
||||
write!(out, "{:?} r{},r{},0x{:04X}", instr.opcode, instr.ra(), instr.rs(), instr.uimm16()).unwrap();
|
||||
}
|
||||
|
||||
// Compare
|
||||
PpcOpcode::cmpi => {
|
||||
write!(out, "cmp{}i cr{},r{},{}", if instr.l() { "d" } else { "w" },
|
||||
instr.crfd(), instr.ra(), instr.simm16()).unwrap();
|
||||
}
|
||||
PpcOpcode::cmpli => {
|
||||
write!(out, "cmpl{}i cr{},r{},0x{:04X}", if instr.l() { "d" } else { "w" },
|
||||
instr.crfd(), instr.ra(), instr.uimm16()).unwrap();
|
||||
}
|
||||
PpcOpcode::cmp => {
|
||||
write!(out, "cmp{} cr{},r{},r{}", if instr.l() { "d" } else { "w" },
|
||||
instr.crfd(), instr.ra(), instr.rb()).unwrap();
|
||||
}
|
||||
PpcOpcode::cmpl => {
|
||||
write!(out, "cmpl{} cr{},r{},r{}", if instr.l() { "d" } else { "w" },
|
||||
instr.crfd(), instr.ra(), instr.rb()).unwrap();
|
||||
}
|
||||
|
||||
// X-form ALU (3-register)
|
||||
PpcOpcode::addx | PpcOpcode::addcx | PpcOpcode::addex | PpcOpcode::addzex |
|
||||
PpcOpcode::addmex | PpcOpcode::subfx | PpcOpcode::subfcx | PpcOpcode::subfex |
|
||||
PpcOpcode::subfzex | PpcOpcode::subfmex | PpcOpcode::negx |
|
||||
PpcOpcode::mullwx | PpcOpcode::mulhwx | PpcOpcode::mulhwux |
|
||||
PpcOpcode::divwx | PpcOpcode::divwux |
|
||||
PpcOpcode::mulldx | PpcOpcode::mulhdx | PpcOpcode::mulhdux |
|
||||
PpcOpcode::divdx | PpcOpcode::divdux => {
|
||||
write!(out, "{:?} r{},r{},r{}", instr.opcode, instr.rd(), instr.ra(), instr.rb()).unwrap();
|
||||
}
|
||||
|
||||
// X-form logical
|
||||
PpcOpcode::andx | PpcOpcode::andcx | PpcOpcode::orx | PpcOpcode::orcx |
|
||||
PpcOpcode::xorx | PpcOpcode::norx | PpcOpcode::nandx | PpcOpcode::eqvx => {
|
||||
write!(out, "{:?} r{},r{},r{}", instr.opcode, instr.ra(), instr.rs(), instr.rb()).unwrap();
|
||||
}
|
||||
|
||||
// Shift/rotate
|
||||
PpcOpcode::slwx | PpcOpcode::srwx | PpcOpcode::srawx | PpcOpcode::sldx |
|
||||
PpcOpcode::srdx | PpcOpcode::sradx => {
|
||||
write!(out, "{:?} r{},r{},r{}", instr.opcode, instr.ra(), instr.rs(), instr.rb()).unwrap();
|
||||
}
|
||||
PpcOpcode::srawix => {
|
||||
write!(out, "srawi r{},r{},{}", instr.ra(), instr.rs(), instr.sh()).unwrap();
|
||||
}
|
||||
PpcOpcode::sradix => {
|
||||
write!(out, "sradi r{},r{},{}", instr.ra(), instr.rs(), instr.sh64()).unwrap();
|
||||
}
|
||||
|
||||
// Rotate
|
||||
PpcOpcode::rlwinmx => {
|
||||
write!(out, "rlwinm r{},r{},{},{},{}", instr.ra(), instr.rs(), instr.sh(), instr.mb(), instr.me()).unwrap();
|
||||
}
|
||||
PpcOpcode::rlwimix => {
|
||||
write!(out, "rlwimi r{},r{},{},{},{}", instr.ra(), instr.rs(), instr.sh(), instr.mb(), instr.me()).unwrap();
|
||||
}
|
||||
PpcOpcode::rlwnmx => {
|
||||
write!(out, "rlwnm r{},r{},r{},{},{}", instr.ra(), instr.rs(), instr.rb(), instr.mb(), instr.me()).unwrap();
|
||||
}
|
||||
|
||||
// Special register moves
|
||||
PpcOpcode::mfspr => {
|
||||
let spr_name = match instr.spr() {
|
||||
1 => "xer",
|
||||
8 => "lr",
|
||||
9 => "ctr",
|
||||
268 => "tbl",
|
||||
269 => "tbu",
|
||||
_ => "",
|
||||
};
|
||||
if spr_name.is_empty() {
|
||||
write!(out, "mfspr r{},{}", instr.rd(), instr.spr()).unwrap();
|
||||
} else {
|
||||
write!(out, "mf{} r{}", spr_name, instr.rd()).unwrap();
|
||||
}
|
||||
}
|
||||
PpcOpcode::mtspr => {
|
||||
let spr_name = match instr.spr() {
|
||||
1 => "xer",
|
||||
8 => "lr",
|
||||
9 => "ctr",
|
||||
_ => "",
|
||||
};
|
||||
if spr_name.is_empty() {
|
||||
write!(out, "mtspr {},r{}", instr.spr(), instr.rs()).unwrap();
|
||||
} else {
|
||||
write!(out, "mt{} r{}", spr_name, instr.rs()).unwrap();
|
||||
}
|
||||
}
|
||||
PpcOpcode::mfcr => {
|
||||
write!(out, "mfcr r{}", instr.rd()).unwrap();
|
||||
}
|
||||
PpcOpcode::mtcrf => {
|
||||
write!(out, "mtcrf 0x{:02X},r{}", instr.crm(), instr.rs()).unwrap();
|
||||
}
|
||||
|
||||
// Extend
|
||||
PpcOpcode::extsbx => write!(out, "extsb r{},r{}", instr.ra(), instr.rs()).unwrap(),
|
||||
PpcOpcode::extshx => write!(out, "extsh r{},r{}", instr.ra(), instr.rs()).unwrap(),
|
||||
PpcOpcode::extswx => write!(out, "extsw r{},r{}", instr.ra(), instr.rs()).unwrap(),
|
||||
PpcOpcode::cntlzwx => write!(out, "cntlzw r{},r{}", instr.ra(), instr.rs()).unwrap(),
|
||||
PpcOpcode::cntlzdx => write!(out, "cntlzd r{},r{}", instr.ra(), instr.rs()).unwrap(),
|
||||
|
||||
// X-form load/store
|
||||
PpcOpcode::lwzx | PpcOpcode::lwzux | PpcOpcode::lbzx | PpcOpcode::lbzux |
|
||||
PpcOpcode::lhzx | PpcOpcode::lhzux | PpcOpcode::lhax | PpcOpcode::lhaux |
|
||||
PpcOpcode::lwax | PpcOpcode::lwaux | PpcOpcode::ldx | PpcOpcode::ldux |
|
||||
PpcOpcode::lfsx | PpcOpcode::lfsux | PpcOpcode::lfdx | PpcOpcode::lfdux |
|
||||
PpcOpcode::lwbrx | PpcOpcode::lhbrx | PpcOpcode::ldbrx |
|
||||
PpcOpcode::lwarx | PpcOpcode::ldarx => {
|
||||
write!(out, "{:?} r{},r{},r{}", instr.opcode, instr.rd(), instr.ra(), instr.rb()).unwrap();
|
||||
}
|
||||
PpcOpcode::stwx | PpcOpcode::stwux | PpcOpcode::stbx | PpcOpcode::stbux |
|
||||
PpcOpcode::sthx | PpcOpcode::sthux | PpcOpcode::stdx | PpcOpcode::stdux |
|
||||
PpcOpcode::stfsx | PpcOpcode::stfsux | PpcOpcode::stfdx | PpcOpcode::stfdux |
|
||||
PpcOpcode::stwbrx | PpcOpcode::sthbrx | PpcOpcode::stdbrx |
|
||||
PpcOpcode::stwcx | PpcOpcode::stdcx | PpcOpcode::stfiwx => {
|
||||
write!(out, "{:?} r{},r{},r{}", instr.opcode, instr.rs(), instr.ra(), instr.rb()).unwrap();
|
||||
}
|
||||
|
||||
// Cache/sync ops (no-ops for interpreter)
|
||||
PpcOpcode::dcbf | PpcOpcode::dcbi | PpcOpcode::dcbst |
|
||||
PpcOpcode::dcbt | PpcOpcode::dcbtst | PpcOpcode::icbi => {
|
||||
write!(out, "{:?} r{},r{}", instr.opcode, instr.ra(), instr.rb()).unwrap();
|
||||
}
|
||||
PpcOpcode::dcbz | PpcOpcode::dcbz128 => {
|
||||
write!(out, "{:?} r{},r{}", instr.opcode, instr.ra(), instr.rb()).unwrap();
|
||||
}
|
||||
PpcOpcode::sync | PpcOpcode::eieio | PpcOpcode::isync => {
|
||||
write!(out, "{:?}", instr.opcode).unwrap();
|
||||
}
|
||||
|
||||
// Load/store multiple
|
||||
PpcOpcode::lmw => write!(out, "lmw r{},{}(r{})", instr.rd(), instr.d(), instr.ra()).unwrap(),
|
||||
PpcOpcode::stmw => write!(out, "stmw r{},{}(r{})", instr.rs(), instr.d(), instr.ra()).unwrap(),
|
||||
|
||||
// DS-form loads/stores
|
||||
PpcOpcode::ld | PpcOpcode::ldu | PpcOpcode::lwa => {
|
||||
write!(out, "{:?} r{},{}(r{})", instr.opcode, instr.rd(), instr.ds(), instr.ra()).unwrap();
|
||||
}
|
||||
PpcOpcode::std | PpcOpcode::stdu => {
|
||||
write!(out, "{:?} r{},{}(r{})", instr.opcode, instr.rs(), instr.ds(), instr.ra()).unwrap();
|
||||
}
|
||||
|
||||
// CR logical ops
|
||||
PpcOpcode::crand | PpcOpcode::crandc | PpcOpcode::creqv | PpcOpcode::crnand |
|
||||
PpcOpcode::crnor | PpcOpcode::cror | PpcOpcode::crorc | PpcOpcode::crxor => {
|
||||
write!(out, "{:?} {},{},{}", instr.opcode, instr.crbd(), instr.crba(), instr.crbb()).unwrap();
|
||||
}
|
||||
PpcOpcode::mcrf => {
|
||||
write!(out, "mcrf cr{},cr{}", instr.crfd(), instr.crfs()).unwrap();
|
||||
}
|
||||
|
||||
// Trap
|
||||
PpcOpcode::tdi => write!(out, "tdi {},r{},{}", instr.rd(), instr.ra(), instr.simm16()).unwrap(),
|
||||
PpcOpcode::twi => write!(out, "twi {},r{},{}", instr.rd(), instr.ra(), instr.simm16()).unwrap(),
|
||||
PpcOpcode::td => write!(out, "td {},r{},r{}", instr.rd(), instr.ra(), instr.rb()).unwrap(),
|
||||
PpcOpcode::tw => write!(out, "tw {},r{},r{}", instr.rd(), instr.ra(), instr.rb()).unwrap(),
|
||||
|
||||
// Default: just print opcode and raw hex
|
||||
_ => {
|
||||
write!(out, "{:?} [{:08X}]", instr.opcode, instr.raw).unwrap();
|
||||
}
|
||||
}
|
||||
out
|
||||
}
|
||||
|
||||
/// Disassemble a range of instructions from a byte slice.
|
||||
pub fn disassemble_block(data: &[u8], base_addr: u32, count: usize) -> Vec<(u32, String)> {
|
||||
let mut result = Vec::new();
|
||||
for i in 0..count {
|
||||
let offset = i * 4;
|
||||
if offset + 4 > data.len() {
|
||||
break;
|
||||
}
|
||||
let raw = u32::from_be_bytes([
|
||||
data[offset],
|
||||
data[offset + 1],
|
||||
data[offset + 2],
|
||||
data[offset + 3],
|
||||
]);
|
||||
let addr = base_addr + offset as u32;
|
||||
let instr = crate::decode(raw, addr);
|
||||
let text = disassemble(&instr);
|
||||
result.push((addr, text));
|
||||
}
|
||||
result
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use crate::decoder::decode;
|
||||
|
||||
#[test]
|
||||
fn test_disasm_nop() {
|
||||
// ori r0, r0, 0 = NOP
|
||||
let instr = decode(0x60000000, 0);
|
||||
let text = disassemble(&instr);
|
||||
assert!(text.contains("ori"), "Expected 'ori', got: {}", text);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_disasm_addi() {
|
||||
let raw = (14u32 << 26) | (3 << 21) | (1 << 16) | 16;
|
||||
let instr = decode(raw, 0);
|
||||
let text = disassemble(&instr);
|
||||
assert!(text.contains("addi"), "Got: {}", text);
|
||||
assert!(text.contains("r3"), "Got: {}", text);
|
||||
}
|
||||
}
|
||||
1293
xenia-rs/crates/xenia-cpu/src/interpreter.rs
Normal file
1293
xenia-rs/crates/xenia-cpu/src/interpreter.rs
Normal file
File diff suppressed because it is too large
Load Diff
9
xenia-rs/crates/xenia-cpu/src/lib.rs
Normal file
9
xenia-rs/crates/xenia-cpu/src/lib.rs
Normal file
@@ -0,0 +1,9 @@
|
||||
pub mod context;
|
||||
pub mod decoder;
|
||||
pub mod disasm;
|
||||
pub mod interpreter;
|
||||
pub mod opcode;
|
||||
|
||||
pub use context::PpcContext;
|
||||
pub use decoder::decode;
|
||||
pub use opcode::PpcOpcode;
|
||||
196
xenia-rs/crates/xenia-cpu/src/opcode.rs
Normal file
196
xenia-rs/crates/xenia-cpu/src/opcode.rs
Normal file
@@ -0,0 +1,196 @@
|
||||
/// All PPC opcodes supported by the Xbox 360, including VMX128 extensions.
|
||||
/// Directly mirrors the C++ PPCOpcode enum from ppc_opcode.h.
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
|
||||
#[repr(u32)]
|
||||
#[allow(non_camel_case_types)]
|
||||
pub enum PpcOpcode {
|
||||
// ALU
|
||||
addcx, addex, addi, addic, addicx, addis, addmex, addx, addzex,
|
||||
andcx, andisx, andix, andx,
|
||||
// Branch
|
||||
bcctrx, bclrx, bcx, bx,
|
||||
// Compare
|
||||
cmp, cmpi, cmpl, cmpli,
|
||||
// Count leading zeros
|
||||
cntlzdx, cntlzwx,
|
||||
// Condition register
|
||||
crand, crandc, creqv, crnand, crnor, cror, crorc, crxor,
|
||||
// Data cache
|
||||
dcbf, dcbi, dcbst, dcbt, dcbtst, dcbz, dcbz128,
|
||||
// Division
|
||||
divdux, divdx, divwux, divwx,
|
||||
// Sync/barrier
|
||||
eieio,
|
||||
// Logical
|
||||
eqvx, extsbx, extshx, extswx,
|
||||
// FPU
|
||||
fabsx, faddsx, faddx, fcfidx, fcmpo, fcmpu, fctidx, fctidzx, fctiwx, fctiwzx,
|
||||
fdivsx, fdivx, fmaddsx, fmaddx, fmrx, fmsubsx, fmsubx, fmulsx, fmulx,
|
||||
fnabsx, fnegx, fnmaddsx, fnmaddx, fnmsubsx, fnmsubx, fresx, frspx, frsqrtex,
|
||||
fselx, fsqrtsx, fsqrtx, fsubsx, fsubx,
|
||||
// Instruction cache
|
||||
icbi, isync,
|
||||
// Load byte
|
||||
lbz, lbzu, lbzux, lbzx,
|
||||
// Load doubleword
|
||||
ld, ldarx, ldbrx, ldu, ldux, ldx,
|
||||
// Load float
|
||||
lfd, lfdu, lfdux, lfdx, lfs, lfsu, lfsux, lfsx,
|
||||
// Load halfword
|
||||
lha, lhau, lhaux, lhax, lhbrx, lhz, lhzu, lhzux, lhzx,
|
||||
// Load multiple/string
|
||||
lmw, lswi, lswx,
|
||||
// Load vector
|
||||
lvebx, lvehx, lvewx, lvewx128, lvlx, lvlx128, lvlxl, lvlxl128,
|
||||
lvrx, lvrx128, lvrxl, lvrxl128,
|
||||
lvsl, lvsl128, lvsr, lvsr128,
|
||||
lvx, lvx128, lvxl, lvxl128,
|
||||
// Load word
|
||||
lwa, lwarx, lwaux, lwax, lwbrx, lwz, lwzu, lwzux, lwzx,
|
||||
// Move CR
|
||||
mcrf, mcrfs, mcrxr,
|
||||
// Move from special
|
||||
mfcr, mffsx, mfmsr, mfspr, mftb, mfvscr,
|
||||
// Move to special
|
||||
mtcrf, mtfsb0x, mtfsb1x, mtfsfix, mtfsfx, mtmsr, mtmsrd, mtspr, mtvscr,
|
||||
// Multiply
|
||||
mulhdux, mulhdx, mulhwux, mulhwx, mulldx, mulli, mullwx,
|
||||
// Logical
|
||||
nandx, negx, norx, orcx, ori, oris, orx,
|
||||
// Rotate
|
||||
rldclx, rldcrx, rldiclx, rldicrx, rldicx, rldimix, rlwimix, rlwinmx, rlwnmx,
|
||||
// System call
|
||||
sc,
|
||||
// Shift
|
||||
sldx, slwx, sradix, sradx, srawix, srawx, srdx, srwx,
|
||||
// Store byte
|
||||
stb, stbu, stbux, stbx,
|
||||
// Store doubleword
|
||||
std, stdbrx, stdcx, stdu, stdux, stdx,
|
||||
// Store float
|
||||
stfd, stfdu, stfdux, stfdx, stfiwx, stfs, stfsu, stfsux, stfsx,
|
||||
// Store halfword
|
||||
sth, sthbrx, sthu, sthux, sthx,
|
||||
// Store multiple/string
|
||||
stmw, stswi, stswx,
|
||||
// Store vector
|
||||
stvebx, stvehx, stvewx, stvewx128, stvlx, stvlx128, stvlxl, stvlxl128,
|
||||
stvrx, stvrx128, stvrxl, stvrxl128,
|
||||
stvx, stvx128, stvxl, stvxl128,
|
||||
// Store word
|
||||
stw, stwbrx, stwcx, stwu, stwux, stwx,
|
||||
// Subtract
|
||||
subfcx, subfex, subficx, subfmex, subfx, subfzex,
|
||||
// Sync
|
||||
sync,
|
||||
// Trap
|
||||
td, tdi, tw, twi,
|
||||
// VMX integer
|
||||
vaddcuw, vaddfp, vaddfp128, vaddsbs, vaddshs, vaddsws,
|
||||
vaddubm, vaddubs, vadduhm, vadduhs, vadduwm, vadduws,
|
||||
vand, vand128, vandc, vandc128,
|
||||
vavgsb, vavgsh, vavgsw, vavgub, vavguh, vavguw,
|
||||
vcfpsxws128, vcfpuxws128, vcfsx, vcfux,
|
||||
vcmpbfp, vcmpbfp128, vcmpeqfp, vcmpeqfp128,
|
||||
vcmpequb, vcmpequh, vcmpequw, vcmpequw128,
|
||||
vcmpgefp, vcmpgefp128, vcmpgtfp, vcmpgtfp128,
|
||||
vcmpgtsb, vcmpgtsh, vcmpgtsw, vcmpgtub, vcmpgtuh, vcmpgtuw,
|
||||
vcsxwfp128, vctsxs, vctuxs, vcuxwfp128,
|
||||
vexptefp, vexptefp128, vlogefp, vlogefp128,
|
||||
vmaddcfp128, vmaddfp, vmaddfp128,
|
||||
vmaxfp, vmaxfp128, vmaxsb, vmaxsh, vmaxsw, vmaxub, vmaxuh, vmaxuw,
|
||||
vmhaddshs, vmhraddshs,
|
||||
vminfp, vminfp128, vminsb, vminsh, vminsw, vminub, vminuh, vminuw,
|
||||
vmladduhm,
|
||||
vmrghb, vmrghh, vmrghw, vmrghw128, vmrglb, vmrglh, vmrglw, vmrglw128,
|
||||
vmsum3fp128, vmsum4fp128,
|
||||
vmsummbm, vmsumshm, vmsumshs, vmsumubm, vmsumuhm, vmsumuhs,
|
||||
vmulesb, vmulesh, vmuleub, vmuleuh, vmulfp128,
|
||||
vmulosb, vmulosh, vmuloub, vmulouh,
|
||||
vnmsubfp, vnmsubfp128, vnor, vnor128,
|
||||
vor, vor128,
|
||||
vperm, vperm128, vpermwi128, vpkd3d128,
|
||||
vpkpx, vpkshss, vpkshss128, vpkshus, vpkshus128,
|
||||
vpkswss, vpkswss128, vpkswus, vpkswus128,
|
||||
vpkuhum, vpkuhum128, vpkuhus, vpkuhus128,
|
||||
vpkuwum, vpkuwum128, vpkuwus, vpkuwus128,
|
||||
vrefp, vrefp128,
|
||||
vrfim, vrfim128, vrfin, vrfin128, vrfip, vrfip128, vrfiz, vrfiz128,
|
||||
vrlb, vrlh, vrlimi128, vrlw, vrlw128,
|
||||
vrsqrtefp, vrsqrtefp128,
|
||||
vsel, vsel128,
|
||||
vsl, vslb, vsldoi, vsldoi128, vslh, vslo, vslo128, vslw, vslw128,
|
||||
vspltb, vsplth, vspltisb, vspltish, vspltisw, vspltisw128, vspltw, vspltw128,
|
||||
vsr, vsrab, vsrah, vsraw, vsraw128, vsrb, vsrh, vsro, vsro128, vsrw, vsrw128,
|
||||
vsubcuw, vsubfp, vsubfp128, vsubsbs, vsubshs, vsubsws,
|
||||
vsububm, vsububs, vsubuhm, vsubuhs, vsubuwm, vsubuws,
|
||||
vsum2sws, vsum4sbs, vsum4shs, vsum4ubs, vsumsws,
|
||||
vupkd3d128, vupkhpx, vupkhsb, vupkhsb128, vupkhsh,
|
||||
vupklpx, vupklsb, vupklsb128, vupklsh,
|
||||
vxor, vxor128,
|
||||
// XOR immediate
|
||||
xori, xoris, xorx,
|
||||
// Invalid
|
||||
Invalid,
|
||||
}
|
||||
|
||||
impl PpcOpcode {
|
||||
/// Returns true if this opcode is a branch instruction.
|
||||
pub fn is_branch(&self) -> bool {
|
||||
matches!(self, Self::bx | Self::bcx | Self::bclrx | Self::bcctrx)
|
||||
}
|
||||
|
||||
/// Returns true if this opcode is a system call.
|
||||
pub fn is_syscall(&self) -> bool {
|
||||
matches!(self, Self::sc)
|
||||
}
|
||||
|
||||
/// Returns true if this is a load instruction.
|
||||
pub fn is_load(&self) -> bool {
|
||||
matches!(self,
|
||||
Self::lbz | Self::lbzu | Self::lbzux | Self::lbzx |
|
||||
Self::lhz | Self::lhzu | Self::lhzux | Self::lhzx |
|
||||
Self::lha | Self::lhau | Self::lhaux | Self::lhax |
|
||||
Self::lwz | Self::lwzu | Self::lwzux | Self::lwzx |
|
||||
Self::lwa | Self::lwax | Self::lwaux |
|
||||
Self::ld | Self::ldu | Self::ldux | Self::ldx |
|
||||
Self::lfs | Self::lfsu | Self::lfsux | Self::lfsx |
|
||||
Self::lfd | Self::lfdu | Self::lfdux | Self::lfdx |
|
||||
Self::lhbrx | Self::lwbrx | Self::ldbrx |
|
||||
Self::lmw | Self::lswi | Self::lswx |
|
||||
Self::lwarx | Self::ldarx
|
||||
)
|
||||
}
|
||||
|
||||
/// Returns true if this is a store instruction.
|
||||
pub fn is_store(&self) -> bool {
|
||||
matches!(self,
|
||||
Self::stb | Self::stbu | Self::stbux | Self::stbx |
|
||||
Self::sth | Self::sthu | Self::sthux | Self::sthx |
|
||||
Self::stw | Self::stwu | Self::stwux | Self::stwx |
|
||||
Self::std | Self::stdu | Self::stdux | Self::stdx |
|
||||
Self::stfs | Self::stfsu | Self::stfsux | Self::stfsx |
|
||||
Self::stfd | Self::stfdu | Self::stfdux | Self::stfdx |
|
||||
Self::sthbrx | Self::stwbrx | Self::stdbrx |
|
||||
Self::stmw | Self::stswi | Self::stswx |
|
||||
Self::stwcx | Self::stdcx | Self::stfiwx
|
||||
)
|
||||
}
|
||||
|
||||
pub fn name(&self) -> &'static str {
|
||||
match self {
|
||||
Self::Invalid => "invalid",
|
||||
_ => {
|
||||
// Use debug formatting to get the variant name
|
||||
// This is a placeholder - in practice we'd have a lookup table
|
||||
"?"
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl std::fmt::Display for PpcOpcode {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
std::fmt::Debug::fmt(self, f)
|
||||
}
|
||||
}
|
||||
12
xenia-rs/crates/xenia-debugger/Cargo.toml
Normal file
12
xenia-rs/crates/xenia-debugger/Cargo.toml
Normal file
@@ -0,0 +1,12 @@
|
||||
[package]
|
||||
name = "xenia-debugger"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
xenia-memory = { workspace = true }
|
||||
xenia-cpu = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
7
xenia-rs/crates/xenia-debugger/src/breakpoint.rs
Normal file
7
xenia-rs/crates/xenia-debugger/src/breakpoint.rs
Normal file
@@ -0,0 +1,7 @@
|
||||
/// A code breakpoint at a specific guest address.
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct Breakpoint {
|
||||
pub addr: u32,
|
||||
pub enabled: bool,
|
||||
pub condition: Option<String>,
|
||||
}
|
||||
125
xenia-rs/crates/xenia-debugger/src/lib.rs
Normal file
125
xenia-rs/crates/xenia-debugger/src/lib.rs
Normal file
@@ -0,0 +1,125 @@
|
||||
pub mod breakpoint;
|
||||
pub mod trace;
|
||||
|
||||
use std::collections::HashMap;
|
||||
use xenia_cpu::context::PpcContext;
|
||||
use xenia_memory::MemoryAccess;
|
||||
|
||||
pub use breakpoint::Breakpoint;
|
||||
pub use trace::TraceEntry;
|
||||
|
||||
/// The debugger. Hooks into every instruction step for observation.
|
||||
pub struct Debugger {
|
||||
pub breakpoints: HashMap<u32, Breakpoint>,
|
||||
pub trace_log: Vec<TraceEntry>,
|
||||
pub trace_enabled: bool,
|
||||
pub max_trace_entries: usize,
|
||||
pub paused: bool,
|
||||
pub step_mode: StepMode,
|
||||
break_pending: bool,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
||||
pub enum StepMode {
|
||||
/// Run freely until breakpoint or pause
|
||||
Run,
|
||||
/// Execute one instruction then pause
|
||||
StepInto,
|
||||
/// Run but break after current function returns (when LR changes)
|
||||
StepOver { return_addr: u32 },
|
||||
}
|
||||
|
||||
impl Debugger {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
breakpoints: HashMap::new(),
|
||||
trace_log: Vec::new(),
|
||||
trace_enabled: true,
|
||||
max_trace_entries: 100_000,
|
||||
paused: true, // Start paused for debugging
|
||||
step_mode: StepMode::StepInto,
|
||||
break_pending: false,
|
||||
}
|
||||
}
|
||||
|
||||
/// Called before each instruction executes.
|
||||
pub fn pre_step(&mut self, ctx: &PpcContext, _mem: &dyn MemoryAccess) {
|
||||
// Check breakpoints
|
||||
if let Some(bp) = self.breakpoints.get(&ctx.pc) {
|
||||
if bp.enabled {
|
||||
self.break_pending = true;
|
||||
tracing::info!("Breakpoint hit at {:#010x}", ctx.pc);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Called after each instruction executes.
|
||||
pub fn post_step(&mut self, ctx: &PpcContext, _mem: &dyn MemoryAccess) {
|
||||
// Log to trace
|
||||
if self.trace_enabled {
|
||||
if self.trace_log.len() >= self.max_trace_entries {
|
||||
self.trace_log.remove(0);
|
||||
}
|
||||
self.trace_log.push(TraceEntry {
|
||||
pc: ctx.pc,
|
||||
cycle: ctx.cycle_count,
|
||||
gpr_snapshot: [ctx.gpr[0], ctx.gpr[1], ctx.gpr[3], ctx.gpr[4]],
|
||||
lr: ctx.lr,
|
||||
});
|
||||
}
|
||||
|
||||
// Handle step mode
|
||||
match self.step_mode {
|
||||
StepMode::StepInto => {
|
||||
self.break_pending = true;
|
||||
}
|
||||
StepMode::StepOver { return_addr } => {
|
||||
if ctx.pc == return_addr {
|
||||
self.break_pending = true;
|
||||
}
|
||||
}
|
||||
StepMode::Run => {}
|
||||
}
|
||||
}
|
||||
|
||||
/// Should we break execution?
|
||||
pub fn should_break(&self) -> bool {
|
||||
self.break_pending || self.paused
|
||||
}
|
||||
|
||||
/// Add a breakpoint at the given address.
|
||||
pub fn add_breakpoint(&mut self, addr: u32) {
|
||||
self.breakpoints.insert(addr, Breakpoint { addr, enabled: true, condition: None });
|
||||
}
|
||||
|
||||
/// Remove a breakpoint.
|
||||
pub fn remove_breakpoint(&mut self, addr: u32) {
|
||||
self.breakpoints.remove(&addr);
|
||||
}
|
||||
|
||||
/// Continue execution.
|
||||
pub fn continue_execution(&mut self) {
|
||||
self.paused = false;
|
||||
self.break_pending = false;
|
||||
self.step_mode = StepMode::Run;
|
||||
}
|
||||
|
||||
/// Step one instruction.
|
||||
pub fn step_into(&mut self) {
|
||||
self.paused = false;
|
||||
self.break_pending = false;
|
||||
self.step_mode = StepMode::StepInto;
|
||||
}
|
||||
|
||||
/// Clear break state after handling.
|
||||
pub fn acknowledge_break(&mut self) {
|
||||
self.break_pending = false;
|
||||
self.paused = true;
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for Debugger {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
9
xenia-rs/crates/xenia-debugger/src/trace.rs
Normal file
9
xenia-rs/crates/xenia-debugger/src/trace.rs
Normal file
@@ -0,0 +1,9 @@
|
||||
/// A single entry in the instruction trace log.
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct TraceEntry {
|
||||
pub pc: u32,
|
||||
pub cycle: u64,
|
||||
/// Snapshot of key GPRs: [r0, r1(sp), r3(arg0/retval), r4(arg1)]
|
||||
pub gpr_snapshot: [u64; 4],
|
||||
pub lr: u64,
|
||||
}
|
||||
13
xenia-rs/crates/xenia-gpu/Cargo.toml
Normal file
13
xenia-rs/crates/xenia-gpu/Cargo.toml
Normal file
@@ -0,0 +1,13 @@
|
||||
[package]
|
||||
name = "xenia-gpu"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
xenia-memory = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
anyhow = { workspace = true }
|
||||
byteorder = { workspace = true }
|
||||
17
xenia-rs/crates/xenia-gpu/src/command_processor.rs
Normal file
17
xenia-rs/crates/xenia-gpu/src/command_processor.rs
Normal file
@@ -0,0 +1,17 @@
|
||||
/// PM4 command processor stub.
|
||||
/// Will parse the GPU command ring buffer and dispatch to render operations.
|
||||
pub struct CommandProcessor {
|
||||
pub enabled: bool,
|
||||
}
|
||||
|
||||
impl CommandProcessor {
|
||||
pub fn new() -> Self {
|
||||
Self { enabled: false }
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for CommandProcessor {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
21
xenia-rs/crates/xenia-gpu/src/lib.rs
Normal file
21
xenia-rs/crates/xenia-gpu/src/lib.rs
Normal file
@@ -0,0 +1,21 @@
|
||||
pub mod command_processor;
|
||||
pub mod register_file;
|
||||
|
||||
/// Stub GPU system for initial implementation.
|
||||
pub struct GpuSystem {
|
||||
pub register_file: register_file::RegisterFile,
|
||||
}
|
||||
|
||||
impl GpuSystem {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
register_file: register_file::RegisterFile::new(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for GpuSystem {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
28
xenia-rs/crates/xenia-gpu/src/register_file.rs
Normal file
28
xenia-rs/crates/xenia-gpu/src/register_file.rs
Normal file
@@ -0,0 +1,28 @@
|
||||
/// Xenos GPU register file. 0x6000 32-bit registers.
|
||||
pub struct RegisterFile {
|
||||
pub regs: Vec<u32>,
|
||||
}
|
||||
|
||||
impl RegisterFile {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
regs: vec![0u32; 0x6000],
|
||||
}
|
||||
}
|
||||
|
||||
pub fn read(&self, index: u32) -> u32 {
|
||||
self.regs.get(index as usize).copied().unwrap_or(0)
|
||||
}
|
||||
|
||||
pub fn write(&mut self, index: u32, value: u32) {
|
||||
if let Some(r) = self.regs.get_mut(index as usize) {
|
||||
*r = value;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for RegisterFile {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
10
xenia-rs/crates/xenia-hid/Cargo.toml
Normal file
10
xenia-rs/crates/xenia-hid/Cargo.toml
Normal file
@@ -0,0 +1,10 @@
|
||||
[package]
|
||||
name = "xenia-hid"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
47
xenia-rs/crates/xenia-hid/src/lib.rs
Normal file
47
xenia-rs/crates/xenia-hid/src/lib.rs
Normal file
@@ -0,0 +1,47 @@
|
||||
/// Human input device system stub.
|
||||
pub struct InputSystem {
|
||||
pub gamepad: GamepadState,
|
||||
}
|
||||
|
||||
#[derive(Default, Clone, Copy)]
|
||||
pub struct GamepadState {
|
||||
pub buttons: u16,
|
||||
pub left_trigger: u8,
|
||||
pub right_trigger: u8,
|
||||
pub left_stick_x: i16,
|
||||
pub left_stick_y: i16,
|
||||
pub right_stick_x: i16,
|
||||
pub right_stick_y: i16,
|
||||
}
|
||||
|
||||
/// Xbox 360 button flags
|
||||
pub mod buttons {
|
||||
pub const DPAD_UP: u16 = 0x0001;
|
||||
pub const DPAD_DOWN: u16 = 0x0002;
|
||||
pub const DPAD_LEFT: u16 = 0x0004;
|
||||
pub const DPAD_RIGHT: u16 = 0x0008;
|
||||
pub const START: u16 = 0x0010;
|
||||
pub const BACK: u16 = 0x0020;
|
||||
pub const LEFT_THUMB: u16 = 0x0040;
|
||||
pub const RIGHT_THUMB: u16 = 0x0080;
|
||||
pub const LEFT_SHOULDER: u16 = 0x0100;
|
||||
pub const RIGHT_SHOULDER: u16 = 0x0200;
|
||||
pub const A: u16 = 0x1000;
|
||||
pub const B: u16 = 0x2000;
|
||||
pub const X: u16 = 0x4000;
|
||||
pub const Y: u16 = 0x8000;
|
||||
}
|
||||
|
||||
impl InputSystem {
|
||||
pub fn new() -> Self {
|
||||
Self {
|
||||
gamepad: GamepadState::default(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for InputSystem {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
13
xenia-rs/crates/xenia-kernel/Cargo.toml
Normal file
13
xenia-rs/crates/xenia-kernel/Cargo.toml
Normal file
@@ -0,0 +1,13 @@
|
||||
[package]
|
||||
name = "xenia-kernel"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
xenia-memory = { workspace = true }
|
||||
xenia-cpu = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
anyhow = { workspace = true }
|
||||
142
xenia-rs/crates/xenia-kernel/src/exports.rs
Normal file
142
xenia-rs/crates/xenia-kernel/src/exports.rs
Normal file
@@ -0,0 +1,142 @@
|
||||
//! HLE kernel export implementations.
|
||||
//! Each export mirrors a function from xboxkrnl_table.inc.
|
||||
|
||||
use crate::state::{KernelState, ModuleId};
|
||||
use xenia_cpu::PpcContext;
|
||||
use xenia_memory::GuestMemory;
|
||||
|
||||
pub fn register_exports(state: &mut KernelState) {
|
||||
use ModuleId::Xboxkrnl;
|
||||
|
||||
// Memory
|
||||
state.register_export(Xboxkrnl, 0xBB, "NtAllocateVirtualMemory", nt_allocate_virtual_memory);
|
||||
state.register_export(Xboxkrnl, 0xBC, "NtFreeVirtualMemory", nt_free_virtual_memory);
|
||||
state.register_export(Xboxkrnl, 0xC4, "NtQueryVirtualMemory", nt_query_virtual_memory);
|
||||
|
||||
// Threading
|
||||
state.register_export(Xboxkrnl, 0x0C, "ExCreateThread", ex_create_thread);
|
||||
state.register_export(Xboxkrnl, 0x5F, "KeDelayExecutionThread", ke_delay_execution_thread);
|
||||
|
||||
// Sync
|
||||
state.register_export(Xboxkrnl, 0xC0, "NtCreateEvent", nt_create_event);
|
||||
state.register_export(Xboxkrnl, 0x63, "KeSetEvent", ke_set_event);
|
||||
state.register_export(Xboxkrnl, 0x6B, "KeWaitForSingleObject", ke_wait_for_single_object);
|
||||
state.register_export(Xboxkrnl, 0x53, "NtClose", nt_close);
|
||||
|
||||
// Module
|
||||
state.register_export(Xboxkrnl, 0x195, "XexGetModuleHandle", xex_get_module_handle);
|
||||
|
||||
// RTL
|
||||
state.register_export(Xboxkrnl, 0x11A, "RtlInitAnsiString", rtl_init_ansi_string);
|
||||
|
||||
// Video
|
||||
state.register_export(Xboxkrnl, 0x142, "VdGetCurrentDisplayGamma", vd_get_current_display_gamma);
|
||||
state.register_export(Xboxkrnl, 0x14B, "VdQueryVideoMode", vd_query_video_mode);
|
||||
|
||||
// Debug
|
||||
state.register_export(Xboxkrnl, 0x166, "DbgPrint", dbg_print);
|
||||
}
|
||||
|
||||
fn nt_allocate_virtual_memory(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
let _base_addr_ptr = ctx.gpr[3] as u32;
|
||||
let _size_ptr = ctx.gpr[4] as u32;
|
||||
// Stub: return success
|
||||
ctx.gpr[3] = 0; // STATUS_SUCCESS
|
||||
}
|
||||
|
||||
fn nt_free_virtual_memory(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn nt_query_virtual_memory(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn ex_create_thread(ctx: &mut PpcContext, _mem: &mut GuestMemory, state: &mut KernelState) {
|
||||
let handle = state.alloc_handle();
|
||||
// Write handle to output parameter (r3 = handle_ptr)
|
||||
tracing::info!("ExCreateThread: allocated handle {:#x}", handle);
|
||||
ctx.gpr[3] = 0; // STATUS_SUCCESS
|
||||
}
|
||||
|
||||
fn ke_delay_execution_thread(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
// In cooperative mode, this is where we'd yield to another thread
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn nt_create_event(ctx: &mut PpcContext, _mem: &mut GuestMemory, state: &mut KernelState) {
|
||||
let _handle = state.alloc_handle();
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn ke_set_event(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn ke_wait_for_single_object(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
// Stub: return immediately as if signaled
|
||||
ctx.gpr[3] = 0; // STATUS_SUCCESS
|
||||
}
|
||||
|
||||
fn nt_close(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn xex_get_module_handle(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
ctx.gpr[3] = 0; // Return NULL for now
|
||||
}
|
||||
|
||||
fn rtl_init_ansi_string(ctx: &mut PpcContext, mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
use xenia_memory::MemoryAccess;
|
||||
let dest_ptr = ctx.gpr[3] as u32;
|
||||
let src_ptr = ctx.gpr[4] as u32;
|
||||
|
||||
if src_ptr != 0 {
|
||||
// Read string length
|
||||
let mut len: u16 = 0;
|
||||
let mut addr = src_ptr;
|
||||
while mem.read_u8(addr) != 0 {
|
||||
len += 1;
|
||||
addr += 1;
|
||||
}
|
||||
// Write ANSI_STRING struct: {Length, MaxLength, Buffer}
|
||||
mem.write_u16(dest_ptr, len);
|
||||
mem.write_u16(dest_ptr + 2, len + 1);
|
||||
mem.write_u32(dest_ptr + 4, src_ptr);
|
||||
}
|
||||
}
|
||||
|
||||
fn vd_get_current_display_gamma(ctx: &mut PpcContext, _mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn vd_query_video_mode(ctx: &mut PpcContext, mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
use xenia_memory::MemoryAccess;
|
||||
let mode_ptr = ctx.gpr[3] as u32;
|
||||
if mode_ptr != 0 {
|
||||
// Write a basic video mode (1280x720)
|
||||
mem.write_u32(mode_ptr, 1280); // width
|
||||
mem.write_u32(mode_ptr + 4, 720); // height
|
||||
mem.write_u32(mode_ptr + 8, 0); // is_interlaced
|
||||
mem.write_u32(mode_ptr + 12, 0); // is_widescreen
|
||||
mem.write_u32(mode_ptr + 16, 60); // refresh_rate
|
||||
}
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
|
||||
fn dbg_print(ctx: &mut PpcContext, mem: &mut GuestMemory, _state: &mut KernelState) {
|
||||
use xenia_memory::MemoryAccess;
|
||||
let str_ptr = ctx.gpr[3] as u32;
|
||||
if str_ptr != 0 {
|
||||
let mut s = String::new();
|
||||
let mut addr = str_ptr;
|
||||
loop {
|
||||
let c = mem.read_u8(addr);
|
||||
if c == 0 { break; }
|
||||
s.push(c as char);
|
||||
addr += 1;
|
||||
}
|
||||
tracing::info!("DbgPrint: {}", s);
|
||||
}
|
||||
ctx.gpr[3] = 0;
|
||||
}
|
||||
4
xenia-rs/crates/xenia-kernel/src/lib.rs
Normal file
4
xenia-rs/crates/xenia-kernel/src/lib.rs
Normal file
@@ -0,0 +1,4 @@
|
||||
pub mod exports;
|
||||
pub mod state;
|
||||
|
||||
pub use state::KernelState;
|
||||
80
xenia-rs/crates/xenia-kernel/src/state.rs
Normal file
80
xenia-rs/crates/xenia-kernel/src/state.rs
Normal file
@@ -0,0 +1,80 @@
|
||||
use std::collections::HashMap;
|
||||
use xenia_cpu::PpcContext;
|
||||
use xenia_memory::GuestMemory;
|
||||
|
||||
/// Function signature for HLE kernel exports.
|
||||
pub type KernelExportFn = fn(&mut PpcContext, &mut GuestMemory, &mut KernelState);
|
||||
|
||||
/// Module identifier for kernel exports.
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
|
||||
pub enum ModuleId {
|
||||
Xboxkrnl,
|
||||
Xam,
|
||||
Xbdm,
|
||||
}
|
||||
|
||||
/// Central kernel state tracking all guest OS state.
|
||||
pub struct KernelState {
|
||||
exports: HashMap<(ModuleId, u32), (&'static str, KernelExportFn)>,
|
||||
next_handle: u32,
|
||||
}
|
||||
|
||||
impl KernelState {
|
||||
pub fn new() -> Self {
|
||||
let mut state = Self {
|
||||
exports: HashMap::new(),
|
||||
next_handle: 0x1000,
|
||||
};
|
||||
crate::exports::register_exports(&mut state);
|
||||
state
|
||||
}
|
||||
|
||||
pub fn register_export(
|
||||
&mut self,
|
||||
module: ModuleId,
|
||||
ordinal: u32,
|
||||
name: &'static str,
|
||||
func: KernelExportFn,
|
||||
) {
|
||||
self.exports.insert((module, ordinal), (name, func));
|
||||
}
|
||||
|
||||
pub fn call_export(
|
||||
&mut self,
|
||||
module: ModuleId,
|
||||
ordinal: u32,
|
||||
ctx: &mut PpcContext,
|
||||
mem: &mut GuestMemory,
|
||||
) -> bool {
|
||||
if let Some(&(name, func)) = self.exports.get(&(module, ordinal)) {
|
||||
tracing::info!(
|
||||
"Kernel call: {:?}:{:#x} ({}) args=[{:#x}, {:#x}, {:#x}, {:#x}]",
|
||||
module, ordinal, name,
|
||||
ctx.gpr[3], ctx.gpr[4], ctx.gpr[5], ctx.gpr[6]
|
||||
);
|
||||
func(ctx, mem, self);
|
||||
tracing::info!(" -> returned {:#x}", ctx.gpr[3]);
|
||||
true
|
||||
} else {
|
||||
tracing::warn!(
|
||||
"Unimplemented kernel export: {:?}:{:#x}",
|
||||
module, ordinal
|
||||
);
|
||||
// Return 0 (STATUS_SUCCESS) by default for unimplemented calls
|
||||
ctx.gpr[3] = 0;
|
||||
false
|
||||
}
|
||||
}
|
||||
|
||||
pub fn alloc_handle(&mut self) -> u32 {
|
||||
let h = self.next_handle;
|
||||
self.next_handle += 4;
|
||||
h
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for KernelState {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
17
xenia-rs/crates/xenia-memory/Cargo.toml
Normal file
17
xenia-rs/crates/xenia-memory/Cargo.toml
Normal file
@@ -0,0 +1,17 @@
|
||||
[package]
|
||||
name = "xenia-memory"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
bitflags = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
|
||||
[target.'cfg(unix)'.dependencies]
|
||||
libc = "0.2"
|
||||
|
||||
[target.'cfg(windows)'.dependencies]
|
||||
windows-sys = { version = "0.59", features = ["Win32_System_Memory", "Win32_Foundation"] }
|
||||
47
xenia-rs/crates/xenia-memory/src/access.rs
Normal file
47
xenia-rs/crates/xenia-memory/src/access.rs
Normal file
@@ -0,0 +1,47 @@
|
||||
/// Trait for all guest memory access. Every load/store goes through this,
|
||||
/// enabling MMIO checking and debugger observation on every access.
|
||||
/// This is the key abstraction that eliminates the need for MMIO exception handlers.
|
||||
pub trait MemoryAccess {
|
||||
fn read_u8(&self, addr: u32) -> u8;
|
||||
fn read_u16(&self, addr: u32) -> u16;
|
||||
fn read_u32(&self, addr: u32) -> u32;
|
||||
fn read_u64(&self, addr: u32) -> u64;
|
||||
fn read_f32(&self, addr: u32) -> f32 {
|
||||
f32::from_bits(self.read_u32(addr))
|
||||
}
|
||||
fn read_f64(&self, addr: u32) -> f64 {
|
||||
f64::from_bits(self.read_u64(addr))
|
||||
}
|
||||
|
||||
fn write_u8(&mut self, addr: u32, val: u8);
|
||||
fn write_u16(&mut self, addr: u32, val: u16);
|
||||
fn write_u32(&mut self, addr: u32, val: u32);
|
||||
fn write_u64(&mut self, addr: u32, val: u64);
|
||||
fn write_f32(&mut self, addr: u32, val: f32) {
|
||||
self.write_u32(addr, val.to_bits());
|
||||
}
|
||||
fn write_f64(&mut self, addr: u32, val: f64) {
|
||||
self.write_u64(addr, val.to_bits());
|
||||
}
|
||||
|
||||
/// Read a block of bytes from guest memory.
|
||||
fn read_bytes(&self, addr: u32, buf: &mut [u8]) {
|
||||
for (i, byte) in buf.iter_mut().enumerate() {
|
||||
*byte = self.read_u8(addr.wrapping_add(i as u32));
|
||||
}
|
||||
}
|
||||
|
||||
/// Write a block of bytes to guest memory.
|
||||
fn write_bytes(&mut self, addr: u32, buf: &[u8]) {
|
||||
for (i, &byte) in buf.iter().enumerate() {
|
||||
self.write_u8(addr.wrapping_add(i as u32), byte);
|
||||
}
|
||||
}
|
||||
|
||||
/// Get a direct host pointer for the given guest address.
|
||||
/// Returns None if the address is invalid or in an MMIO region.
|
||||
fn translate(&self, addr: u32) -> Option<*const u8>;
|
||||
|
||||
/// Get a mutable direct host pointer for the given guest address.
|
||||
fn translate_mut(&mut self, addr: u32) -> Option<*mut u8>;
|
||||
}
|
||||
242
xenia-rs/crates/xenia-memory/src/heap.rs
Normal file
242
xenia-rs/crates/xenia-memory/src/heap.rs
Normal file
@@ -0,0 +1,242 @@
|
||||
use crate::access::MemoryAccess;
|
||||
use crate::mmio::MmioRegion;
|
||||
use crate::page_table::{AllocationState, MemoryProtect, PageEntry};
|
||||
use crate::MemoryError;
|
||||
|
||||
const PAGE_SIZE: u32 = 4096;
|
||||
/// Total guest address space: 4GB.
|
||||
const GUEST_ADDRESS_SPACE: usize = 0x1_0000_0000;
|
||||
/// Number of 4K pages in the 4GB address space.
|
||||
const PAGE_COUNT: usize = GUEST_ADDRESS_SPACE / PAGE_SIZE as usize;
|
||||
/// Physical memory mask (512MB physical address space).
|
||||
const PHYSICAL_ADDR_MASK: u32 = 0x1FFF_FFFF;
|
||||
|
||||
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
|
||||
pub enum HeapType {
|
||||
GuestVirtual,
|
||||
GuestXex,
|
||||
GuestPhysical,
|
||||
}
|
||||
|
||||
/// The core guest memory system. Manages a 4GB virtual address space
|
||||
/// via mmap/VirtualAlloc, with page-level tracking and MMIO dispatch.
|
||||
pub struct GuestMemory {
|
||||
/// Host pointer to the base of the 4GB guest address space.
|
||||
membase: *mut u8,
|
||||
/// Page table tracking allocation state for each 4K page.
|
||||
page_table: Vec<PageEntry>,
|
||||
/// Registered MMIO regions (sorted by base address for binary search).
|
||||
mmio_regions: Vec<MmioRegion>,
|
||||
/// Whether the memory mapping is owned (should be unmapped on drop).
|
||||
owned: bool,
|
||||
}
|
||||
|
||||
unsafe impl Send for GuestMemory {}
|
||||
unsafe impl Sync for GuestMemory {}
|
||||
|
||||
impl GuestMemory {
|
||||
/// Create a new guest memory space by reserving a 4GB virtual address region.
|
||||
pub fn new() -> Result<Self, MemoryError> {
|
||||
let membase = crate::platform::reserve_address_space(GUEST_ADDRESS_SPACE)?;
|
||||
Ok(Self {
|
||||
membase,
|
||||
page_table: vec![PageEntry::default(); PAGE_COUNT],
|
||||
mmio_regions: Vec::new(),
|
||||
owned: true,
|
||||
})
|
||||
}
|
||||
|
||||
/// Get the host base pointer for the guest address space.
|
||||
pub fn membase(&self) -> *const u8 {
|
||||
self.membase
|
||||
}
|
||||
|
||||
/// Get a mutable host base pointer.
|
||||
pub fn membase_mut(&mut self) -> *mut u8 {
|
||||
self.membase
|
||||
}
|
||||
|
||||
/// Translate a guest virtual address to a host pointer.
|
||||
pub fn translate_virtual(&self, guest_addr: u32) -> *const u8 {
|
||||
unsafe { self.membase.add(guest_addr as usize) }
|
||||
}
|
||||
|
||||
/// Translate a guest virtual address to a mutable host pointer.
|
||||
pub fn translate_virtual_mut(&mut self, guest_addr: u32) -> *mut u8 {
|
||||
unsafe { self.membase.add(guest_addr as usize) }
|
||||
}
|
||||
|
||||
/// Translate a guest physical address to a host pointer.
|
||||
pub fn translate_physical(&self, guest_addr: u32) -> *const u8 {
|
||||
let phys = guest_addr & PHYSICAL_ADDR_MASK;
|
||||
unsafe { self.membase.add(phys as usize) }
|
||||
}
|
||||
|
||||
/// Register an MMIO region.
|
||||
pub fn add_mmio_region(&mut self, region: MmioRegion) {
|
||||
let base = region.base_address;
|
||||
let idx = self
|
||||
.mmio_regions
|
||||
.binary_search_by_key(&base, |r| r.base_address)
|
||||
.unwrap_or_else(|i| i);
|
||||
self.mmio_regions.insert(idx, region);
|
||||
}
|
||||
|
||||
/// Check if an address is in a registered MMIO region.
|
||||
fn find_mmio(&self, addr: u32) -> Option<&MmioRegion> {
|
||||
self.mmio_regions.iter().find(|r| r.contains(addr))
|
||||
}
|
||||
|
||||
/// Allocate a region in the guest address space.
|
||||
pub fn alloc(
|
||||
&mut self,
|
||||
base: u32,
|
||||
size: u32,
|
||||
protect: MemoryProtect,
|
||||
) -> Result<u32, MemoryError> {
|
||||
let page_start = (base / PAGE_SIZE) as usize;
|
||||
let page_count = ((size + PAGE_SIZE - 1) / PAGE_SIZE) as usize;
|
||||
|
||||
// Commit pages via platform
|
||||
let host_ptr = unsafe { self.membase.add(base as usize) };
|
||||
crate::platform::commit_memory(host_ptr, (page_count * PAGE_SIZE as usize) as usize)?;
|
||||
|
||||
// Update page table
|
||||
for i in 0..page_count {
|
||||
let idx = page_start + i;
|
||||
if idx < self.page_table.len() {
|
||||
let entry = &mut self.page_table[idx];
|
||||
entry.set_base_address(page_start as u32);
|
||||
entry.set_region_page_count(page_count as u32);
|
||||
entry.set_allocation_protect(protect);
|
||||
entry.set_current_protect(protect);
|
||||
entry.set_state(AllocationState::RESERVE | AllocationState::COMMIT);
|
||||
}
|
||||
}
|
||||
|
||||
Ok(base)
|
||||
}
|
||||
|
||||
/// Read a slice of bytes from guest memory (bypassing MMIO for bulk reads).
|
||||
pub fn read_bulk(&self, addr: u32, buf: &mut [u8]) {
|
||||
let ptr = self.translate_virtual(addr);
|
||||
unsafe {
|
||||
std::ptr::copy_nonoverlapping(ptr, buf.as_mut_ptr(), buf.len());
|
||||
}
|
||||
}
|
||||
|
||||
/// Write a slice of bytes to guest memory (bypassing MMIO for bulk writes).
|
||||
pub fn write_bulk(&mut self, addr: u32, buf: &[u8]) {
|
||||
let ptr = self.translate_virtual_mut(addr);
|
||||
unsafe {
|
||||
std::ptr::copy_nonoverlapping(buf.as_ptr(), ptr, buf.len());
|
||||
}
|
||||
}
|
||||
|
||||
/// Get a page table entry for a given address.
|
||||
pub fn page_entry(&self, addr: u32) -> &PageEntry {
|
||||
let page = (addr / PAGE_SIZE) as usize;
|
||||
&self.page_table[page]
|
||||
}
|
||||
}
|
||||
|
||||
impl MemoryAccess for GuestMemory {
|
||||
fn read_u8(&self, addr: u32) -> u8 {
|
||||
let ptr = self.translate_virtual(addr);
|
||||
unsafe { *ptr }
|
||||
}
|
||||
|
||||
fn read_u16(&self, addr: u32) -> u16 {
|
||||
if let Some(mmio) = self.find_mmio(addr) {
|
||||
(mmio.read_callback)(addr) as u16
|
||||
} else {
|
||||
let ptr = self.translate_virtual(addr) as *const [u8; 2];
|
||||
u16::from_be_bytes(unsafe { *ptr })
|
||||
}
|
||||
}
|
||||
|
||||
fn read_u32(&self, addr: u32) -> u32 {
|
||||
if let Some(mmio) = self.find_mmio(addr) {
|
||||
(mmio.read_callback)(addr)
|
||||
} else {
|
||||
let ptr = self.translate_virtual(addr) as *const [u8; 4];
|
||||
u32::from_be_bytes(unsafe { *ptr })
|
||||
}
|
||||
}
|
||||
|
||||
fn read_u64(&self, addr: u32) -> u64 {
|
||||
if let Some(mmio) = self.find_mmio(addr) {
|
||||
let hi = (mmio.read_callback)(addr) as u64;
|
||||
let lo = (mmio.read_callback)(addr.wrapping_add(4)) as u64;
|
||||
(hi << 32) | lo
|
||||
} else {
|
||||
let ptr = self.translate_virtual(addr) as *const [u8; 8];
|
||||
u64::from_be_bytes(unsafe { *ptr })
|
||||
}
|
||||
}
|
||||
|
||||
fn write_u8(&mut self, addr: u32, val: u8) {
|
||||
let ptr = self.translate_virtual_mut(addr);
|
||||
unsafe { *ptr = val };
|
||||
}
|
||||
|
||||
fn write_u16(&mut self, addr: u32, val: u16) {
|
||||
if let Some(mmio) = self.find_mmio(addr) {
|
||||
(mmio.write_callback)(addr, val as u32);
|
||||
} else {
|
||||
let ptr = self.translate_virtual_mut(addr);
|
||||
unsafe {
|
||||
std::ptr::copy_nonoverlapping(val.to_be_bytes().as_ptr(), ptr, 2);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn write_u32(&mut self, addr: u32, val: u32) {
|
||||
if let Some(mmio) = self.find_mmio(addr) {
|
||||
(mmio.write_callback)(addr, val);
|
||||
} else {
|
||||
let ptr = self.translate_virtual_mut(addr);
|
||||
unsafe {
|
||||
std::ptr::copy_nonoverlapping(val.to_be_bytes().as_ptr(), ptr, 4);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn write_u64(&mut self, addr: u32, val: u64) {
|
||||
if let Some(mmio) = self.find_mmio(addr) {
|
||||
(mmio.write_callback)(addr, (val >> 32) as u32);
|
||||
(mmio.write_callback)(addr.wrapping_add(4), val as u32);
|
||||
} else {
|
||||
let ptr = self.translate_virtual_mut(addr);
|
||||
unsafe {
|
||||
std::ptr::copy_nonoverlapping(val.to_be_bytes().as_ptr(), ptr, 8);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn translate(&self, addr: u32) -> Option<*const u8> {
|
||||
if self.find_mmio(addr).is_some() {
|
||||
None
|
||||
} else {
|
||||
Some(self.translate_virtual(addr))
|
||||
}
|
||||
}
|
||||
|
||||
fn translate_mut(&mut self, addr: u32) -> Option<*mut u8> {
|
||||
if self.find_mmio(addr).is_some() {
|
||||
None
|
||||
} else {
|
||||
Some(self.translate_virtual_mut(addr))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Drop for GuestMemory {
|
||||
fn drop(&mut self) {
|
||||
if self.owned && !self.membase.is_null() {
|
||||
unsafe {
|
||||
crate::platform::release_address_space(self.membase, GUEST_ADDRESS_SPACE);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
31
xenia-rs/crates/xenia-memory/src/lib.rs
Normal file
31
xenia-rs/crates/xenia-memory/src/lib.rs
Normal file
@@ -0,0 +1,31 @@
|
||||
pub mod access;
|
||||
pub mod heap;
|
||||
pub mod mmio;
|
||||
pub mod page_table;
|
||||
|
||||
mod platform;
|
||||
|
||||
use thiserror::Error;
|
||||
|
||||
pub use access::MemoryAccess;
|
||||
pub use heap::{GuestMemory, HeapType};
|
||||
pub use mmio::MmioRegion;
|
||||
pub use page_table::PageEntry;
|
||||
|
||||
#[derive(Debug, Error)]
|
||||
pub enum MemoryError {
|
||||
#[error("Failed to allocate guest address space: {0}")]
|
||||
AllocationFailed(String),
|
||||
|
||||
#[error("Invalid guest address: {0:#010x}")]
|
||||
InvalidAddress(u32),
|
||||
|
||||
#[error("MMIO access at {0:#010x}")]
|
||||
MmioAccess(u32),
|
||||
|
||||
#[error("Protection violation at {0:#010x}")]
|
||||
ProtectionViolation(u32),
|
||||
|
||||
#[error("Out of memory in heap {0:?}")]
|
||||
OutOfMemory(HeapType),
|
||||
}
|
||||
27
xenia-rs/crates/xenia-memory/src/mmio.rs
Normal file
27
xenia-rs/crates/xenia-memory/src/mmio.rs
Normal file
@@ -0,0 +1,27 @@
|
||||
/// Represents a mapped MMIO region with read/write callbacks.
|
||||
/// Instead of trapping access violations (as the C++ JIT does), the interpreter
|
||||
/// explicitly checks each memory access against registered MMIO regions.
|
||||
pub struct MmioRegion {
|
||||
pub base_address: u32,
|
||||
pub mask: u32,
|
||||
pub size: u32,
|
||||
pub read_callback: Box<dyn Fn(u32) -> u32 + Send + Sync>,
|
||||
pub write_callback: Box<dyn Fn(u32, u32) + Send + Sync>,
|
||||
}
|
||||
|
||||
impl MmioRegion {
|
||||
pub fn contains(&self, addr: u32) -> bool {
|
||||
let masked = addr & self.mask;
|
||||
masked >= self.base_address && masked < self.base_address + self.size
|
||||
}
|
||||
}
|
||||
|
||||
impl std::fmt::Debug for MmioRegion {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
f.debug_struct("MmioRegion")
|
||||
.field("base_address", &format_args!("{:#010x}", self.base_address))
|
||||
.field("mask", &format_args!("{:#010x}", self.mask))
|
||||
.field("size", &format_args!("{:#x}", self.size))
|
||||
.finish()
|
||||
}
|
||||
}
|
||||
122
xenia-rs/crates/xenia-memory/src/page_table.rs
Normal file
122
xenia-rs/crates/xenia-memory/src/page_table.rs
Normal file
@@ -0,0 +1,122 @@
|
||||
use bitflags::bitflags;
|
||||
|
||||
/// Describes a single page in the page table.
|
||||
/// Mirrors the C++ `PageEntry` union from memory.h:82-99.
|
||||
#[derive(Clone, Copy, Default)]
|
||||
pub struct PageEntry(u64);
|
||||
|
||||
impl PageEntry {
|
||||
/// Base address of the allocated region in 4K pages (20 bits).
|
||||
pub fn base_address(&self) -> u32 {
|
||||
(self.0 & 0xFFFFF) as u32
|
||||
}
|
||||
|
||||
pub fn set_base_address(&mut self, val: u32) {
|
||||
self.0 = (self.0 & !0xFFFFF) | (val as u64 & 0xFFFFF);
|
||||
}
|
||||
|
||||
/// Total number of pages in the allocated region (20 bits).
|
||||
pub fn region_page_count(&self) -> u32 {
|
||||
((self.0 >> 20) & 0xFFFFF) as u32
|
||||
}
|
||||
|
||||
pub fn set_region_page_count(&mut self, val: u32) {
|
||||
self.0 = (self.0 & !(0xFFFFF << 20)) | ((val as u64 & 0xFFFFF) << 20);
|
||||
}
|
||||
|
||||
/// Protection bits specified during region allocation (4 bits).
|
||||
pub fn allocation_protect(&self) -> MemoryProtect {
|
||||
MemoryProtect::from_bits_truncate(((self.0 >> 40) & 0xF) as u32)
|
||||
}
|
||||
|
||||
pub fn set_allocation_protect(&mut self, val: MemoryProtect) {
|
||||
self.0 = (self.0 & !(0xF << 40)) | ((val.bits() as u64 & 0xF) << 40);
|
||||
}
|
||||
|
||||
/// Current protection bits (4 bits).
|
||||
pub fn current_protect(&self) -> MemoryProtect {
|
||||
MemoryProtect::from_bits_truncate(((self.0 >> 44) & 0xF) as u32)
|
||||
}
|
||||
|
||||
pub fn set_current_protect(&mut self, val: MemoryProtect) {
|
||||
self.0 = (self.0 & !(0xF << 44)) | ((val.bits() as u64 & 0xF) << 44);
|
||||
}
|
||||
|
||||
/// Allocation state (2 bits).
|
||||
pub fn state(&self) -> AllocationState {
|
||||
AllocationState::from_bits_truncate(((self.0 >> 48) & 0x3) as u32)
|
||||
}
|
||||
|
||||
pub fn set_state(&mut self, val: AllocationState) {
|
||||
self.0 = (self.0 & !(0x3 << 48)) | ((val.bits() as u64 & 0x3) << 48);
|
||||
}
|
||||
|
||||
pub fn is_committed(&self) -> bool {
|
||||
self.state().contains(AllocationState::COMMIT)
|
||||
}
|
||||
|
||||
pub fn is_reserved(&self) -> bool {
|
||||
self.state().contains(AllocationState::RESERVE)
|
||||
}
|
||||
|
||||
pub fn is_free(&self) -> bool {
|
||||
self.state().is_empty()
|
||||
}
|
||||
}
|
||||
|
||||
bitflags! {
|
||||
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
||||
pub struct MemoryProtect: u32 {
|
||||
const READ = 1 << 0;
|
||||
const WRITE = 1 << 1;
|
||||
const NO_CACHE = 1 << 2;
|
||||
const WRITE_COMBINE = 1 << 3;
|
||||
}
|
||||
}
|
||||
|
||||
bitflags! {
|
||||
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
||||
pub struct AllocationState: u32 {
|
||||
const RESERVE = 1 << 0;
|
||||
const COMMIT = 1 << 1;
|
||||
}
|
||||
}
|
||||
|
||||
impl std::fmt::Debug for PageEntry {
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
||||
f.debug_struct("PageEntry")
|
||||
.field("base_address", &format_args!("{:#x}", self.base_address()))
|
||||
.field("region_page_count", &self.region_page_count())
|
||||
.field("allocation_protect", &self.allocation_protect())
|
||||
.field("current_protect", &self.current_protect())
|
||||
.field("state", &self.state())
|
||||
.finish()
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_page_entry_bitfields() {
|
||||
let mut entry = PageEntry::default();
|
||||
assert!(entry.is_free());
|
||||
|
||||
entry.set_base_address(0x100);
|
||||
entry.set_region_page_count(0x10);
|
||||
entry.set_allocation_protect(MemoryProtect::READ | MemoryProtect::WRITE);
|
||||
entry.set_current_protect(MemoryProtect::READ);
|
||||
entry.set_state(AllocationState::RESERVE | AllocationState::COMMIT);
|
||||
|
||||
assert_eq!(entry.base_address(), 0x100);
|
||||
assert_eq!(entry.region_page_count(), 0x10);
|
||||
assert_eq!(
|
||||
entry.allocation_protect(),
|
||||
MemoryProtect::READ | MemoryProtect::WRITE
|
||||
);
|
||||
assert_eq!(entry.current_protect(), MemoryProtect::READ);
|
||||
assert!(entry.is_committed());
|
||||
assert!(entry.is_reserved());
|
||||
}
|
||||
}
|
||||
98
xenia-rs/crates/xenia-memory/src/platform.rs
Normal file
98
xenia-rs/crates/xenia-memory/src/platform.rs
Normal file
@@ -0,0 +1,98 @@
|
||||
use crate::MemoryError;
|
||||
|
||||
/// Reserve a contiguous virtual address region without committing physical pages.
|
||||
#[cfg(unix)]
|
||||
pub fn reserve_address_space(size: usize) -> Result<*mut u8, MemoryError> {
|
||||
unsafe {
|
||||
let ptr = libc::mmap(
|
||||
std::ptr::null_mut(),
|
||||
size,
|
||||
libc::PROT_NONE,
|
||||
libc::MAP_PRIVATE | libc::MAP_ANONYMOUS | libc::MAP_NORESERVE,
|
||||
-1,
|
||||
0,
|
||||
);
|
||||
if ptr == libc::MAP_FAILED {
|
||||
Err(MemoryError::AllocationFailed(format!(
|
||||
"mmap failed for {} bytes: {}",
|
||||
size,
|
||||
std::io::Error::last_os_error()
|
||||
)))
|
||||
} else {
|
||||
Ok(ptr as *mut u8)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Commit (make accessible) a region within a previously reserved address space.
|
||||
#[cfg(unix)]
|
||||
pub fn commit_memory(ptr: *mut u8, size: usize) -> Result<(), MemoryError> {
|
||||
unsafe {
|
||||
let result = libc::mprotect(ptr as *mut libc::c_void, size, libc::PROT_READ | libc::PROT_WRITE);
|
||||
if result != 0 {
|
||||
Err(MemoryError::AllocationFailed(format!(
|
||||
"mprotect failed for {} bytes: {}",
|
||||
size,
|
||||
std::io::Error::last_os_error()
|
||||
)))
|
||||
} else {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Release a previously reserved address space.
|
||||
#[cfg(unix)]
|
||||
pub unsafe fn release_address_space(ptr: *mut u8, size: usize) {
|
||||
unsafe { libc::munmap(ptr as *mut libc::c_void, size); }
|
||||
}
|
||||
|
||||
#[cfg(windows)]
|
||||
pub fn reserve_address_space(size: usize) -> Result<*mut u8, MemoryError> {
|
||||
unsafe {
|
||||
let ptr = windows_sys::Win32::System::Memory::VirtualAlloc(
|
||||
std::ptr::null_mut(),
|
||||
size,
|
||||
windows_sys::Win32::System::Memory::MEM_RESERVE,
|
||||
windows_sys::Win32::System::Memory::PAGE_NOACCESS,
|
||||
);
|
||||
if ptr.is_null() {
|
||||
Err(MemoryError::AllocationFailed(format!(
|
||||
"VirtualAlloc reserve failed for {} bytes",
|
||||
size,
|
||||
)))
|
||||
} else {
|
||||
Ok(ptr as *mut u8)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(windows)]
|
||||
pub fn commit_memory(ptr: *mut u8, size: usize) -> Result<(), MemoryError> {
|
||||
unsafe {
|
||||
let result = windows_sys::Win32::System::Memory::VirtualAlloc(
|
||||
ptr as *mut _,
|
||||
size,
|
||||
windows_sys::Win32::System::Memory::MEM_COMMIT,
|
||||
windows_sys::Win32::System::Memory::PAGE_READWRITE,
|
||||
);
|
||||
if result.is_null() {
|
||||
Err(MemoryError::AllocationFailed(format!(
|
||||
"VirtualAlloc commit failed for {} bytes",
|
||||
size,
|
||||
)))
|
||||
} else {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(windows)]
|
||||
pub unsafe fn release_address_space(ptr: *mut u8, size: usize) {
|
||||
let _ = size;
|
||||
windows_sys::Win32::System::Memory::VirtualFree(
|
||||
ptr as *mut _,
|
||||
0,
|
||||
windows_sys::Win32::System::Memory::MEM_RELEASE,
|
||||
);
|
||||
}
|
||||
11
xenia-rs/crates/xenia-types/Cargo.toml
Normal file
11
xenia-rs/crates/xenia-types/Cargo.toml
Normal file
@@ -0,0 +1,11 @@
|
||||
[package]
|
||||
name = "xenia-types"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
bitflags = { workspace = true }
|
||||
byteorder = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
serde = { workspace = true }
|
||||
122
xenia-rs/crates/xenia-types/src/endian.rs
Normal file
122
xenia-rs/crates/xenia-types/src/endian.rs
Normal file
@@ -0,0 +1,122 @@
|
||||
use serde::{Deserialize, Serialize};
|
||||
use std::fmt;
|
||||
use std::marker::PhantomData;
|
||||
|
||||
/// Big-endian value wrapper matching `xe::be<T>` from the C++ codebase.
|
||||
/// Stores the value in big-endian byte order and transparently converts
|
||||
/// on access. Used for guest memory structures that are natively big-endian.
|
||||
#[derive(Clone, Copy, Serialize, Deserialize)]
|
||||
#[repr(transparent)]
|
||||
pub struct Be<T: BeSwap>(T::Bytes, PhantomData<T>);
|
||||
|
||||
impl<T: BeSwap> Be<T> {
|
||||
pub fn new(val: T) -> Self {
|
||||
Self(val.to_be_bytes(), PhantomData)
|
||||
}
|
||||
|
||||
pub fn get(self) -> T {
|
||||
T::from_be_bytes(self.0)
|
||||
}
|
||||
|
||||
pub fn set(&mut self, val: T) {
|
||||
self.0 = val.to_be_bytes();
|
||||
}
|
||||
|
||||
pub fn raw_bytes(&self) -> &T::Bytes {
|
||||
&self.0
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: BeSwap + Default> Default for Be<T> {
|
||||
fn default() -> Self {
|
||||
Self::new(T::default())
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: BeSwap + fmt::Debug> fmt::Debug for Be<T> {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
self.get().fmt(f)
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: BeSwap + fmt::Display> fmt::Display for Be<T> {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
self.get().fmt(f)
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: BeSwap + PartialEq> PartialEq for Be<T> {
|
||||
fn eq(&self, other: &Self) -> bool {
|
||||
// Compare raw bytes for efficiency (same byte order)
|
||||
self.0.as_ref() == other.0.as_ref()
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: BeSwap + Eq> Eq for Be<T> {}
|
||||
|
||||
/// Trait for types that can be converted to/from big-endian byte representations.
|
||||
pub trait BeSwap: Copy {
|
||||
type Bytes: Copy + AsRef<[u8]> + serde::Serialize + for<'de> serde::Deserialize<'de>;
|
||||
fn to_be_bytes(self) -> Self::Bytes;
|
||||
fn from_be_bytes(bytes: Self::Bytes) -> Self;
|
||||
}
|
||||
|
||||
macro_rules! impl_be_swap {
|
||||
($t:ty) => {
|
||||
impl BeSwap for $t {
|
||||
type Bytes = [u8; std::mem::size_of::<$t>()];
|
||||
fn to_be_bytes(self) -> Self::Bytes {
|
||||
<$t>::to_be_bytes(self)
|
||||
}
|
||||
fn from_be_bytes(bytes: Self::Bytes) -> Self {
|
||||
<$t>::from_be_bytes(bytes)
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
impl_be_swap!(u8);
|
||||
impl_be_swap!(u16);
|
||||
impl_be_swap!(u32);
|
||||
impl_be_swap!(u64);
|
||||
impl_be_swap!(i8);
|
||||
impl_be_swap!(i16);
|
||||
impl_be_swap!(i32);
|
||||
impl_be_swap!(i64);
|
||||
impl_be_swap!(f32);
|
||||
impl_be_swap!(f64);
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_be_u32() {
|
||||
let v = Be::<u32>::new(0x12345678);
|
||||
assert_eq!(v.get(), 0x12345678);
|
||||
assert_eq!(v.raw_bytes(), &[0x12, 0x34, 0x56, 0x78]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_be_u16() {
|
||||
let v = Be::<u16>::new(0xABCD);
|
||||
assert_eq!(v.get(), 0xABCD);
|
||||
assert_eq!(v.raw_bytes(), &[0xAB, 0xCD]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_be_mutate() {
|
||||
let mut v = Be::<u32>::new(1);
|
||||
assert_eq!(v.get(), 1);
|
||||
v.set(42);
|
||||
assert_eq!(v.get(), 42);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_be_f32() {
|
||||
let v = Be::<f32>::new(1.0);
|
||||
assert_eq!(v.get(), 1.0);
|
||||
// IEEE 754: 1.0f = 0x3F800000 => bytes [0x3F, 0x80, 0x00, 0x00]
|
||||
assert_eq!(v.raw_bytes(), &[0x3F, 0x80, 0x00, 0x00]);
|
||||
}
|
||||
}
|
||||
27
xenia-rs/crates/xenia-types/src/error.rs
Normal file
27
xenia-rs/crates/xenia-types/src/error.rs
Normal file
@@ -0,0 +1,27 @@
|
||||
use thiserror::Error;
|
||||
|
||||
#[derive(Debug, Error)]
|
||||
pub enum XeniaError {
|
||||
#[error("Invalid XEX2 file: {0}")]
|
||||
InvalidXex(String),
|
||||
|
||||
#[error("Invalid XISO file: {0}")]
|
||||
InvalidXiso(String),
|
||||
|
||||
#[error("Memory error: {0}")]
|
||||
Memory(String),
|
||||
|
||||
#[error("Unimplemented opcode: {0}")]
|
||||
UnimplementedOpcode(String),
|
||||
|
||||
#[error("Unimplemented kernel export: module={module} ordinal={ordinal:#x}")]
|
||||
UnimplementedExport { module: String, ordinal: u32 },
|
||||
|
||||
#[error("Invalid guest address: {0:#010x}")]
|
||||
InvalidAddress(u32),
|
||||
|
||||
#[error("I/O error: {0}")]
|
||||
Io(#[from] std::io::Error),
|
||||
}
|
||||
|
||||
pub type XeniaResult<T> = Result<T, XeniaError>;
|
||||
6
xenia-rs/crates/xenia-types/src/lib.rs
Normal file
6
xenia-rs/crates/xenia-types/src/lib.rs
Normal file
@@ -0,0 +1,6 @@
|
||||
pub mod endian;
|
||||
pub mod error;
|
||||
pub mod vec128;
|
||||
|
||||
pub use endian::Be;
|
||||
pub use vec128::Vec128;
|
||||
161
xenia-rs/crates/xenia-types/src/vec128.rs
Normal file
161
xenia-rs/crates/xenia-types/src/vec128.rs
Normal file
@@ -0,0 +1,161 @@
|
||||
use serde::{Deserialize, Serialize};
|
||||
use std::fmt;
|
||||
|
||||
/// 128-bit vector register type matching the Xbox 360's VMX128 registers.
|
||||
/// Stored in big-endian byte order (matching guest memory layout).
|
||||
#[derive(Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
|
||||
#[repr(C, align(16))]
|
||||
pub struct Vec128 {
|
||||
pub bytes: [u8; 16],
|
||||
}
|
||||
|
||||
impl Vec128 {
|
||||
pub const ZERO: Self = Self { bytes: [0; 16] };
|
||||
|
||||
pub fn from_u32x4(a: u32, b: u32, c: u32, d: u32) -> Self {
|
||||
let mut bytes = [0u8; 16];
|
||||
bytes[0..4].copy_from_slice(&a.to_be_bytes());
|
||||
bytes[4..8].copy_from_slice(&b.to_be_bytes());
|
||||
bytes[8..12].copy_from_slice(&c.to_be_bytes());
|
||||
bytes[12..16].copy_from_slice(&d.to_be_bytes());
|
||||
Self { bytes }
|
||||
}
|
||||
|
||||
pub fn from_f32x4(a: f32, b: f32, c: f32, d: f32) -> Self {
|
||||
Self::from_u32x4(a.to_bits(), b.to_bits(), c.to_bits(), d.to_bits())
|
||||
}
|
||||
|
||||
/// Read the i-th u32 element (big-endian, 0-indexed).
|
||||
pub fn u32x4(&self, i: usize) -> u32 {
|
||||
let off = i * 4;
|
||||
u32::from_be_bytes([
|
||||
self.bytes[off],
|
||||
self.bytes[off + 1],
|
||||
self.bytes[off + 2],
|
||||
self.bytes[off + 3],
|
||||
])
|
||||
}
|
||||
|
||||
/// Write the i-th u32 element (big-endian, 0-indexed).
|
||||
pub fn set_u32x4(&mut self, i: usize, val: u32) {
|
||||
let off = i * 4;
|
||||
self.bytes[off..off + 4].copy_from_slice(&val.to_be_bytes());
|
||||
}
|
||||
|
||||
/// Read the i-th f32 element (big-endian, 0-indexed).
|
||||
pub fn f32x4(&self, i: usize) -> f32 {
|
||||
f32::from_bits(self.u32x4(i))
|
||||
}
|
||||
|
||||
/// Write the i-th f32 element (big-endian, 0-indexed).
|
||||
pub fn set_f32x4(&mut self, i: usize, val: f32) {
|
||||
self.set_u32x4(i, val.to_bits());
|
||||
}
|
||||
|
||||
/// Read the i-th u16 element (big-endian, 0-indexed).
|
||||
pub fn u16x8(&self, i: usize) -> u16 {
|
||||
let off = i * 2;
|
||||
u16::from_be_bytes([self.bytes[off], self.bytes[off + 1]])
|
||||
}
|
||||
|
||||
/// Write the i-th u16 element (big-endian, 0-indexed).
|
||||
pub fn set_u16x8(&mut self, i: usize, val: u16) {
|
||||
let off = i * 2;
|
||||
self.bytes[off..off + 2].copy_from_slice(&val.to_be_bytes());
|
||||
}
|
||||
|
||||
/// Read the i-th u8 element (0-indexed).
|
||||
pub fn u8x16(&self, i: usize) -> u8 {
|
||||
self.bytes[i]
|
||||
}
|
||||
|
||||
/// Write the i-th u8 element (0-indexed).
|
||||
pub fn set_u8x16(&mut self, i: usize, val: u8) {
|
||||
self.bytes[i] = val;
|
||||
}
|
||||
|
||||
/// Read as two u64 values (big-endian).
|
||||
pub fn u64x2(&self, i: usize) -> u64 {
|
||||
let off = i * 8;
|
||||
u64::from_be_bytes([
|
||||
self.bytes[off],
|
||||
self.bytes[off + 1],
|
||||
self.bytes[off + 2],
|
||||
self.bytes[off + 3],
|
||||
self.bytes[off + 4],
|
||||
self.bytes[off + 5],
|
||||
self.bytes[off + 6],
|
||||
self.bytes[off + 7],
|
||||
])
|
||||
}
|
||||
|
||||
pub fn set_u64x2(&mut self, i: usize, val: u64) {
|
||||
let off = i * 8;
|
||||
self.bytes[off..off + 8].copy_from_slice(&val.to_be_bytes());
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for Vec128 {
|
||||
fn default() -> Self {
|
||||
Self::ZERO
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Debug for Vec128 {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
write!(
|
||||
f,
|
||||
"Vec128({:08X}_{:08X}_{:08X}_{:08X})",
|
||||
self.u32x4(0),
|
||||
self.u32x4(1),
|
||||
self.u32x4(2),
|
||||
self.u32x4(3),
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Display for Vec128 {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
fmt::Debug::fmt(self, f)
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_u32x4_roundtrip() {
|
||||
let v = Vec128::from_u32x4(0xDEADBEEF, 0xCAFEBABE, 0x12345678, 0x9ABCDEF0);
|
||||
assert_eq!(v.u32x4(0), 0xDEADBEEF);
|
||||
assert_eq!(v.u32x4(1), 0xCAFEBABE);
|
||||
assert_eq!(v.u32x4(2), 0x12345678);
|
||||
assert_eq!(v.u32x4(3), 0x9ABCDEF0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_f32x4_roundtrip() {
|
||||
let v = Vec128::from_f32x4(1.0, -2.5, 3.14, 0.0);
|
||||
assert_eq!(v.f32x4(0), 1.0);
|
||||
assert_eq!(v.f32x4(1), -2.5);
|
||||
assert!((v.f32x4(2) - 3.14).abs() < f32::EPSILON);
|
||||
assert_eq!(v.f32x4(3), 0.0);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_u16x8() {
|
||||
let v = Vec128::from_u32x4(0x00010002, 0x00030004, 0x00050006, 0x00070008);
|
||||
assert_eq!(v.u16x8(0), 0x0001);
|
||||
assert_eq!(v.u16x8(1), 0x0002);
|
||||
assert_eq!(v.u16x8(6), 0x0007);
|
||||
assert_eq!(v.u16x8(7), 0x0008);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_zero() {
|
||||
let v = Vec128::ZERO;
|
||||
for i in 0..4 {
|
||||
assert_eq!(v.u32x4(i), 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
12
xenia-rs/crates/xenia-vfs/Cargo.toml
Normal file
12
xenia-rs/crates/xenia-vfs/Cargo.toml
Normal file
@@ -0,0 +1,12 @@
|
||||
[package]
|
||||
name = "xenia-vfs"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
byteorder = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
anyhow = { workspace = true }
|
||||
54
xenia-rs/crates/xenia-vfs/src/device.rs
Normal file
54
xenia-rs/crates/xenia-vfs/src/device.rs
Normal file
@@ -0,0 +1,54 @@
|
||||
use crate::{VfsDevice, VfsEntry, VfsError};
|
||||
use std::path::{Path, PathBuf};
|
||||
|
||||
/// Host filesystem pass-through device.
|
||||
pub struct HostPathDevice {
|
||||
name: String,
|
||||
root: PathBuf,
|
||||
}
|
||||
|
||||
impl HostPathDevice {
|
||||
pub fn new(name: impl Into<String>, root: impl AsRef<Path>) -> Self {
|
||||
Self {
|
||||
name: name.into(),
|
||||
root: root.as_ref().to_path_buf(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl VfsDevice for HostPathDevice {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
|
||||
fn list_root(&self) -> Result<Vec<VfsEntry>, VfsError> {
|
||||
let mut entries = Vec::new();
|
||||
for entry in std::fs::read_dir(&self.root)? {
|
||||
let entry = entry?;
|
||||
let metadata = entry.metadata()?;
|
||||
entries.push(VfsEntry {
|
||||
name: entry.file_name().to_string_lossy().into_owned(),
|
||||
is_directory: metadata.is_dir(),
|
||||
size: metadata.len(),
|
||||
offset: 0,
|
||||
});
|
||||
}
|
||||
Ok(entries)
|
||||
}
|
||||
|
||||
fn read_file(&self, path: &str) -> Result<Vec<u8>, VfsError> {
|
||||
let full_path = self.root.join(path);
|
||||
std::fs::read(&full_path).map_err(VfsError::from)
|
||||
}
|
||||
|
||||
fn stat(&self, path: &str) -> Result<VfsEntry, VfsError> {
|
||||
let full_path = self.root.join(path);
|
||||
let metadata = std::fs::metadata(&full_path)?;
|
||||
Ok(VfsEntry {
|
||||
name: path.to_string(),
|
||||
is_directory: metadata.is_dir(),
|
||||
size: metadata.len(),
|
||||
offset: 0,
|
||||
})
|
||||
}
|
||||
}
|
||||
40
xenia-rs/crates/xenia-vfs/src/disc_image.rs
Normal file
40
xenia-rs/crates/xenia-vfs/src/disc_image.rs
Normal file
@@ -0,0 +1,40 @@
|
||||
use crate::{VfsDevice, VfsEntry, VfsError};
|
||||
|
||||
/// XISO disc image device. Parses Xbox 360 disc images.
|
||||
pub struct DiscImageDevice {
|
||||
name: String,
|
||||
_data: Vec<u8>,
|
||||
}
|
||||
|
||||
/// XISO sector size
|
||||
pub const SECTOR_SIZE: usize = 0x800;
|
||||
|
||||
impl DiscImageDevice {
|
||||
pub fn open(name: impl Into<String>, path: &std::path::Path) -> Result<Self, VfsError> {
|
||||
let data = std::fs::read(path)?;
|
||||
// TODO: validate XISO header
|
||||
Ok(Self {
|
||||
name: name.into(),
|
||||
_data: data,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
impl VfsDevice for DiscImageDevice {
|
||||
fn name(&self) -> &str {
|
||||
&self.name
|
||||
}
|
||||
|
||||
fn list_root(&self) -> Result<Vec<VfsEntry>, VfsError> {
|
||||
// TODO: Parse XISO directory tree
|
||||
Ok(Vec::new())
|
||||
}
|
||||
|
||||
fn read_file(&self, _path: &str) -> Result<Vec<u8>, VfsError> {
|
||||
Err(VfsError::NotFound("Not yet implemented".into()))
|
||||
}
|
||||
|
||||
fn stat(&self, _path: &str) -> Result<VfsEntry, VfsError> {
|
||||
Err(VfsError::NotFound("Not yet implemented".into()))
|
||||
}
|
||||
}
|
||||
33
xenia-rs/crates/xenia-vfs/src/lib.rs
Normal file
33
xenia-rs/crates/xenia-vfs/src/lib.rs
Normal file
@@ -0,0 +1,33 @@
|
||||
pub mod device;
|
||||
pub mod disc_image;
|
||||
|
||||
use thiserror::Error;
|
||||
|
||||
#[derive(Debug, Error)]
|
||||
pub enum VfsError {
|
||||
#[error("I/O error: {0}")]
|
||||
Io(#[from] std::io::Error),
|
||||
|
||||
#[error("Invalid format: {0}")]
|
||||
InvalidFormat(String),
|
||||
|
||||
#[error("File not found: {0}")]
|
||||
NotFound(String),
|
||||
}
|
||||
|
||||
/// A virtual filesystem entry (file or directory).
|
||||
#[derive(Debug)]
|
||||
pub struct VfsEntry {
|
||||
pub name: String,
|
||||
pub is_directory: bool,
|
||||
pub size: u64,
|
||||
pub offset: u64,
|
||||
}
|
||||
|
||||
/// Trait for VFS device implementations (XISO, STFS, host path, etc.)
|
||||
pub trait VfsDevice: Send + Sync {
|
||||
fn name(&self) -> &str;
|
||||
fn list_root(&self) -> Result<Vec<VfsEntry>, VfsError>;
|
||||
fn read_file(&self, path: &str) -> Result<Vec<u8>, VfsError>;
|
||||
fn stat(&self, path: &str) -> Result<VfsEntry, VfsError>;
|
||||
}
|
||||
13
xenia-rs/crates/xenia-xex/Cargo.toml
Normal file
13
xenia-rs/crates/xenia-xex/Cargo.toml
Normal file
@@ -0,0 +1,13 @@
|
||||
[package]
|
||||
name = "xenia-xex"
|
||||
version.workspace = true
|
||||
edition.workspace = true
|
||||
license.workspace = true
|
||||
|
||||
[dependencies]
|
||||
xenia-types = { workspace = true }
|
||||
xenia-memory = { workspace = true }
|
||||
tracing = { workspace = true }
|
||||
byteorder = { workspace = true }
|
||||
thiserror = { workspace = true }
|
||||
anyhow = { workspace = true }
|
||||
55
xenia-rs/crates/xenia-xex/src/header.rs
Normal file
55
xenia-rs/crates/xenia-xex/src/header.rs
Normal file
@@ -0,0 +1,55 @@
|
||||
/// XEX2 file header. Parsed from the beginning of an Xbox 360 executable.
|
||||
#[derive(Debug)]
|
||||
pub struct Xex2Header {
|
||||
pub magic: u32,
|
||||
pub module_flags: u32,
|
||||
pub header_size: u32,
|
||||
pub security_offset: u32,
|
||||
pub header_count: u32,
|
||||
pub optional_headers: Vec<Xex2OptionalHeader>,
|
||||
pub security_info: Option<Xex2SecurityInfo>,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Xex2OptionalHeader {
|
||||
pub key: u32,
|
||||
pub value: u32,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Xex2SecurityInfo {
|
||||
pub image_size: u32,
|
||||
pub load_address: u32,
|
||||
pub export_table_address: u32,
|
||||
pub image_flags: u32,
|
||||
pub page_descriptors: Vec<Xex2PageDescriptor>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
pub struct Xex2PageDescriptor {
|
||||
pub size_and_info: u32,
|
||||
}
|
||||
|
||||
impl Xex2PageDescriptor {
|
||||
pub fn page_count(&self) -> u32 {
|
||||
self.size_and_info >> 4
|
||||
}
|
||||
|
||||
pub fn info(&self) -> u32 {
|
||||
self.size_and_info & 0xF
|
||||
}
|
||||
}
|
||||
|
||||
/// XEX2 magic: "XEX2"
|
||||
pub const XEX2_MAGIC: u32 = 0x58455832;
|
||||
|
||||
/// Optional header keys
|
||||
pub mod header_keys {
|
||||
pub const ENTRY_POINT: u32 = 0x00010100;
|
||||
pub const IMAGE_BASE_ADDRESS: u32 = 0x00010201;
|
||||
pub const IMPORT_LIBRARIES: u32 = 0x000103FF;
|
||||
pub const TLS_INFO: u32 = 0x00020200;
|
||||
pub const EXECUTION_INFO: u32 = 0x00040006;
|
||||
pub const DEFAULT_STACK_SIZE: u32 = 0x00020200;
|
||||
pub const ORIGINAL_PE_NAME: u32 = 0x000183FF;
|
||||
}
|
||||
4
xenia-rs/crates/xenia-xex/src/lib.rs
Normal file
4
xenia-rs/crates/xenia-xex/src/lib.rs
Normal file
@@ -0,0 +1,4 @@
|
||||
pub mod header;
|
||||
pub mod loader;
|
||||
|
||||
pub use header::Xex2Header;
|
||||
98
xenia-rs/crates/xenia-xex/src/loader.rs
Normal file
98
xenia-rs/crates/xenia-xex/src/loader.rs
Normal file
@@ -0,0 +1,98 @@
|
||||
use crate::header::*;
|
||||
use byteorder::{BigEndian, ReadBytesExt};
|
||||
use std::io::{self, Cursor, Read, Seek, SeekFrom};
|
||||
|
||||
/// Parse a XEX2 header from raw file data.
|
||||
pub fn parse_xex2_header(data: &[u8]) -> io::Result<Xex2Header> {
|
||||
let mut cursor = Cursor::new(data);
|
||||
|
||||
let magic = cursor.read_u32::<BigEndian>()?;
|
||||
if magic != XEX2_MAGIC {
|
||||
return Err(io::Error::new(
|
||||
io::ErrorKind::InvalidData,
|
||||
format!("Invalid XEX2 magic: {:#010x} (expected {:#010x})", magic, XEX2_MAGIC),
|
||||
));
|
||||
}
|
||||
|
||||
let module_flags = cursor.read_u32::<BigEndian>()?;
|
||||
let header_size = cursor.read_u32::<BigEndian>()?;
|
||||
let _reserved = cursor.read_u32::<BigEndian>()?;
|
||||
let security_offset = cursor.read_u32::<BigEndian>()?;
|
||||
let header_count = cursor.read_u32::<BigEndian>()?;
|
||||
|
||||
let mut optional_headers = Vec::new();
|
||||
for _ in 0..header_count {
|
||||
let key = cursor.read_u32::<BigEndian>()?;
|
||||
let value = cursor.read_u32::<BigEndian>()?;
|
||||
optional_headers.push(Xex2OptionalHeader { key, value });
|
||||
}
|
||||
|
||||
// Parse security info
|
||||
let security_info = if (security_offset as usize) < data.len() {
|
||||
cursor.seek(SeekFrom::Start(security_offset as u64))?;
|
||||
Some(parse_security_info(&mut cursor)?)
|
||||
} else {
|
||||
None
|
||||
};
|
||||
|
||||
Ok(Xex2Header {
|
||||
magic,
|
||||
module_flags,
|
||||
header_size,
|
||||
security_offset,
|
||||
header_count,
|
||||
optional_headers,
|
||||
security_info,
|
||||
})
|
||||
}
|
||||
|
||||
fn parse_security_info(cursor: &mut Cursor<&[u8]>) -> io::Result<Xex2SecurityInfo> {
|
||||
let _header_size = cursor.read_u32::<BigEndian>()?;
|
||||
let image_size = cursor.read_u32::<BigEndian>()?;
|
||||
|
||||
// Skip RSA signature (256 bytes) and other security fields
|
||||
let mut skip_buf = [0u8; 256];
|
||||
cursor.read_exact(&mut skip_buf)?;
|
||||
|
||||
// Skip image info hash (20 bytes) and import table hash (20 bytes)
|
||||
cursor.read_exact(&mut [0u8; 20])?;
|
||||
cursor.read_exact(&mut [0u8; 20])?;
|
||||
|
||||
let load_address = cursor.read_u32::<BigEndian>()?;
|
||||
let _load_size = cursor.read_u32::<BigEndian>()?;
|
||||
let export_table_address = cursor.read_u32::<BigEndian>()?;
|
||||
let image_flags = cursor.read_u32::<BigEndian>()?;
|
||||
|
||||
// Read page descriptor count
|
||||
let page_descriptor_count = cursor.read_u32::<BigEndian>()?;
|
||||
let mut page_descriptors = Vec::new();
|
||||
for _ in 0..page_descriptor_count {
|
||||
let size_and_info = cursor.read_u32::<BigEndian>()?;
|
||||
page_descriptors.push(Xex2PageDescriptor { size_and_info });
|
||||
}
|
||||
|
||||
Ok(Xex2SecurityInfo {
|
||||
image_size,
|
||||
load_address,
|
||||
export_table_address,
|
||||
image_flags,
|
||||
page_descriptors,
|
||||
})
|
||||
}
|
||||
|
||||
/// Get an optional header value by key.
|
||||
pub fn get_opt_header(header: &Xex2Header, key: u32) -> Option<u32> {
|
||||
header.optional_headers.iter()
|
||||
.find(|h| h.key == key)
|
||||
.map(|h| h.value)
|
||||
}
|
||||
|
||||
/// Get the entry point address from the XEX2 header.
|
||||
pub fn get_entry_point(header: &Xex2Header) -> Option<u32> {
|
||||
get_opt_header(header, header_keys::ENTRY_POINT)
|
||||
}
|
||||
|
||||
/// Get the image base address.
|
||||
pub fn get_image_base(header: &Xex2Header) -> Option<u32> {
|
||||
get_opt_header(header, header_keys::IMAGE_BASE_ADDRESS)
|
||||
}
|
||||
Reference in New Issue
Block a user