feat: expanded ACPI support, initial support for S3 sleep
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@@ -0,0 +1,200 @@
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/*
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* AmlInterpreter.hpp
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* AML bytecode interpreter — parses DSDT/SSDT into the ACPI namespace
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* and evaluates methods, fields, and device status
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* Copyright (c) 2026 Daniel Hammer
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*/
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#pragma once
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#include "AmlNamespace.hpp"
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#include <cstdint>
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namespace Hal {
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namespace AML {
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// ── Extended AML Opcodes ────────────────────────────────────────
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// Single-byte opcodes
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static constexpr uint8_t ZeroOp = 0x00;
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static constexpr uint8_t OneOp = 0x01;
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static constexpr uint8_t AliasOp = 0x06;
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static constexpr uint8_t NameOp = 0x08;
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static constexpr uint8_t BytePrefix = 0x0A;
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static constexpr uint8_t WordPrefix = 0x0B;
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static constexpr uint8_t DWordPrefix = 0x0C;
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static constexpr uint8_t StringPrefix = 0x0D;
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static constexpr uint8_t QWordPrefix = 0x0E;
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static constexpr uint8_t ScopeOp = 0x10;
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static constexpr uint8_t BufferOp = 0x11;
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static constexpr uint8_t PackageOp = 0x12;
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static constexpr uint8_t VarPackageOp = 0x13;
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static constexpr uint8_t MethodOp = 0x14;
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static constexpr uint8_t DualNamePrefix = 0x2E;
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static constexpr uint8_t MultiNamePrefix = 0x2F;
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static constexpr uint8_t LocalPrefix = 0x60; // Local0..Local7 = 0x60..0x67
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static constexpr uint8_t ArgPrefix = 0x68; // Arg0..Arg6 = 0x68..0x6E
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static constexpr uint8_t StoreOp = 0x70;
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static constexpr uint8_t AddOp = 0x72;
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static constexpr uint8_t SubtractOp = 0x74;
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static constexpr uint8_t MultiplyOp = 0x77;
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static constexpr uint8_t ShiftLeftOp = 0x79;
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static constexpr uint8_t ShiftRightOp = 0x7A;
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static constexpr uint8_t AndOp = 0x7B;
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static constexpr uint8_t NandOp = 0x7C;
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static constexpr uint8_t OrOp = 0x7D;
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static constexpr uint8_t NorOp = 0x7E;
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static constexpr uint8_t XorOp = 0x7F;
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static constexpr uint8_t NotOp = 0x80;
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static constexpr uint8_t DerefOfOp = 0x83;
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static constexpr uint8_t SizeOfOp = 0x87;
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static constexpr uint8_t IndexOp = 0x88;
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static constexpr uint8_t CreateDWordFieldOp = 0x8A;
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static constexpr uint8_t CreateWordFieldOp = 0x8B;
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static constexpr uint8_t CreateByteFieldOp = 0x8C;
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static constexpr uint8_t CreateBitFieldOp = 0x8D;
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static constexpr uint8_t OnesOp = 0xFF;
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static constexpr uint8_t ReturnOp = 0xA4;
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static constexpr uint8_t BreakOp = 0xA5;
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static constexpr uint8_t IfOp = 0xA0;
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static constexpr uint8_t ElseOp = 0xA1;
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static constexpr uint8_t WhileOp = 0xA2;
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static constexpr uint8_t NoopOp = 0xA3;
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static constexpr uint8_t ConcatOp = 0x73;
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static constexpr uint8_t ToIntegerOp = 0x99;
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static constexpr uint8_t ToBufferOp = 0x96;
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static constexpr uint8_t RevisionOp = 0x30; // not a real AML op, used internally
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// ExtOp prefix (0x5B) followed by second byte
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static constexpr uint8_t ExtOpPrefix = 0x5B;
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static constexpr uint8_t MutexOp = 0x01; // after ExtOpPrefix
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static constexpr uint8_t EventOp = 0x02;
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static constexpr uint8_t OpRegionOp = 0x80;
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static constexpr uint8_t FieldOp = 0x81;
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static constexpr uint8_t DeviceOp = 0x82;
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static constexpr uint8_t ProcessorOp = 0x83;
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static constexpr uint8_t PowerResOp = 0x84;
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static constexpr uint8_t ThermalZoneOp = 0x85;
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static constexpr uint8_t IndexFieldOp = 0x86;
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static constexpr uint8_t BankFieldOp = 0x87;
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static constexpr uint8_t AcquireOp = 0x23;
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static constexpr uint8_t ReleaseOp = 0x27;
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static constexpr uint8_t SleepOp = 0x22;
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static constexpr uint8_t StallOp = 0x21;
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static constexpr uint8_t LNotOp = 0x92; // single-byte, actually
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static constexpr uint8_t LEqualOp = 0x93; // single-byte
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static constexpr uint8_t LGreaterOp = 0x94; // single-byte
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static constexpr uint8_t LLessOp = 0x95; // single-byte
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static constexpr uint8_t LAndOp = 0x90; // single-byte
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static constexpr uint8_t LOrOp = 0x91; // single-byte
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static constexpr uint8_t IncrementOp = 0x75;
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static constexpr uint8_t DecrementOp = 0x76;
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static constexpr uint8_t DivideOp = 0x78;
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static constexpr uint8_t ModOp = 0x85;
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static constexpr uint8_t ConcatResOp = 0x84;
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static constexpr uint8_t ToHexStringOp = 0x98;
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static constexpr uint8_t ToDecimalStringOp = 0x97;
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// ── Interpreter Configuration ───────────────────────────────────
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static constexpr int MaxCallDepth = 16;
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static constexpr int MaxLoopIterations = 1024;
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// ── Interpreter ─────────────────────────────────────────────────
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class Interpreter {
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public:
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Interpreter();
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// Parse a DSDT or SSDT table into the namespace.
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// tableData points to the CommonSDTHeader (HHDM-mapped).
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bool LoadTable(void* tableData);
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// Evaluate a named object, returning its value.
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// For methods, executes them with no arguments.
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bool EvaluateObject(const char* path, Object& result);
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// Evaluate a method with arguments.
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bool EvaluateMethod(const char* path, const Object* args, int argCount, Object& result);
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// Read a field value. Returns integer.
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bool ReadField(int32_t nodeIndex, uint64_t& value);
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// Write a field value.
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bool WriteField(int32_t nodeIndex, uint64_t value);
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// Get the namespace for direct queries.
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Namespace& GetNamespace() { return m_ns; }
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const Namespace& GetNamespace() const { return m_ns; }
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// Check if the interpreter has been initialized
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bool IsInitialized() const { return m_initialized; }
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private:
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// ── Parsing (table load) ────────────────────────────────────
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bool ParseBlock(const uint8_t* aml, uint32_t offset, uint32_t endOffset,
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int32_t scopeNode);
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bool ParseNamedObject(const uint8_t* aml, uint32_t* pos, uint32_t endOffset,
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int32_t scopeNode);
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bool ParseExtendedOp(const uint8_t* aml, uint32_t* pos, uint32_t endOffset,
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int32_t scopeNode);
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// ── Name resolution ─────────────────────────────────────────
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// Read a NameString from AML and produce an absolute path.
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// Advances *pos past the name.
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int ReadNameString(const uint8_t* aml, uint32_t* pos, int32_t scopeNode,
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char* outPath, int maxLen);
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// Read a single 4-char NameSeg from AML. Advances *pos.
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void ReadNameSeg(const uint8_t* aml, uint32_t* pos, char* outSeg);
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// ── Value decoding ──────────────────────────────────────────
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uint32_t DecodePkgLength(const uint8_t* aml, uint32_t* pos);
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uint64_t DecodeInteger(const uint8_t* aml, uint32_t* pos);
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// ── Method execution ────────────────────────────────────────
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struct ExecContext {
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const uint8_t* Aml;
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uint32_t AmlBase; // start of the block within the table
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uint32_t AmlLength;
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int32_t ScopeNode;
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Object Locals[MaxMethodLocals];
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Object Args[MaxMethodArgs];
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Object ReturnValue;
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bool Returned;
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bool Broken;
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int Depth;
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};
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bool ExecuteBlock(ExecContext& ctx, uint32_t offset, uint32_t endOffset);
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bool ExecuteOpcode(ExecContext& ctx, uint32_t* pos, uint32_t endOffset);
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// Evaluate a term (expression that produces a value) within an execution context.
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bool EvalTerm(ExecContext& ctx, uint32_t* pos, uint32_t endOffset, Object& result);
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// Evaluate a "SuperName" target for Store operations.
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// Returns the node index for named targets, or handles locals/args.
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// If isLocal/isArg is set, localIdx/argIdx contains the index.
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bool EvalTarget(ExecContext& ctx, uint32_t* pos,
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int32_t& nodeIndex, bool& isLocal, int& localIdx,
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bool& isArg, int& argIdx);
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// Store a value to a target (node, local, or arg).
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void StoreToTarget(ExecContext& ctx, const Object& value,
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int32_t nodeIndex, bool isLocal, int localIdx,
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bool isArg, int argIdx);
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// ── Field I/O ───────────────────────────────────────────────
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bool ReadRegion(RegionSpace space, uint64_t address, uint32_t bitWidth, uint64_t& value);
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bool WriteRegion(RegionSpace space, uint64_t address, uint32_t bitWidth, uint64_t value);
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// ── State ───────────────────────────────────────────────────
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Namespace m_ns;
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const uint8_t* m_dsdt;
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uint32_t m_dsdtLength;
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bool m_initialized;
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};
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// ── Global interpreter instance ─────────────────────────────────
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Interpreter& GetInterpreter();
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};
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};
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