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3208 lines (2711 loc) · 123 KB
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/*
* Copyright (C) 2023 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WasmIPIntGenerator.h"
#include <cstdint>
#if ENABLE(WEBASSEMBLY)
#include "BytecodeGeneratorBaseInlines.h"
#include "BytecodeStructs.h"
#include "InstructionStream.h"
#include "JSCJSValueInlines.h"
#include "Label.h"
#include "WasmCallingConvention.h"
#include "WasmContext.h"
#include "WasmFunctionIPIntMetadataGenerator.h"
#include "WasmFunctionParser.h"
#include "WasmModuleDebugInfo.h"
#include <wtf/Assertions.h>
#include <wtf/CompletionHandler.h>
#include <wtf/RefPtr.h>
/*
* WebAssembly in-place interpreter metadata generator
*
* docs by Daniel Liu <daniel_liu4@apple.com / danlliu@umich.edu>; 2023 intern project
*
* 1. Why Metadata?
* ----------------
*
* WebAssembly's bytecode format isn't always the easiest to interpret by itself: jumps would require parsing
* through many bytes to find their target, constants are stored in LEB128, and a myriad of other reasons.
* For IPInt, we design metadata to act as "supporting information" for the interpreter, allowing it to quickly
* find important values such as constants, indices, and branch targets.
*
* FIXME: We should consider not aligning on Apple ARM64 cores since they don't typically have a penatly for unaligned loads/stores.
*
* 2. Metadata Structure
* ---------------------
*
* Metadata is kept in a vector of UInt8 (bytes). We handle metadata in "metadata entries", which are groups of
* 8 metadata bytes. We keep metadata aligned to 8B to improve access times. Sometimes, this results in higher
* memory overhead; however, these cases are relatively sparse. Each instruction pushes a certain number of
* entries to the metadata vector.
*
* 3. Metadata for Instructions
* ----------------------------
*
* block (0x02): 1 entry; 8B PC of next instruction
* loop (0x03): 1 entry; 8B PC of next instruction
* if (0x04): 2 entries; 4B new PC, 4B new MC for `else`, 8B new PC for `if`
* else (0x05): 1 entry; 4B new PC, 4B new MC for `end`
* end (0x0b): If exiting the function: ceil((# return values + 2) / 8) entries; 2B for total entry size, 1B / value returned
* br (0x0c): 2 entries; 4B new PC, 4B new MC, 2B number of values to pop, 2B arity, 4B PC after br
* br_if (0x0d): 2 entries; same as br
* br_table (0x0e): 1 + 2n entries for n branches: 8B number of targets; n br metadata entries
* local.get (0x20): 1 entry; 4B index of local, 4B size of instruction
* local.set (0x21): 1 entry; 4B index of local, 4B size of instruction
* local.tee (0x22): 2 entries because of how FunctionParser works
* global.get (0x23): 1 entry; 4B index of global, 4B size of instruction
* global.set (0x24): 1 entry; 4B index of global, 4B size of instruction
* table.get (0x23): 1 entry; 4B index of table, 4B size of instruction
* table.set (0x24): 1 entry; 4B index of table, 4B size of instruction
* mem load (0x28 - 0x35): 1 entry; 4B memarg, 4B size of instruction
* mem store (0x28 - 0x35): 1 entry; 4B memarg, 4B size of instruction
* i32.const (0x41): 1 entry; 4B value, 4B size of instruction
* i64.const (0x42): 2 entries; 8B value, 8B size of instruction
*
* i32, i64, f32, and f64 operations (besides the ones shown above) do not require metadata
*
*/
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
#define RECORD_NEXT_INSTRUCTION(fromPC, toPC) \
do { \
if (Options::enableWasmDebugger()) [[unlikely]] { \
if (m_debugInfo) { \
uint32_t fromOffset = fromPC + m_metadata->m_bytecodeOffset + m_functionStartByteOffset; \
uint32_t toOffset = toPC + m_metadata->m_bytecodeOffset + m_functionStartByteOffset; \
m_debugInfo->addNextInstruction(fromOffset, toOffset); \
} \
} \
} while (0)
namespace JSC { namespace Wasm {
using ErrorType = String;
using PartialResult = Expected<void, ErrorType>;
using UnexpectedResult = Unexpected<ErrorType>;
struct Value { };
// ControlBlock
struct IPIntLocation {
uint32_t pc;
uint32_t mc;
};
struct IPIntControlType {
friend class IPIntGenerator;
IPIntControlType()
{
}
IPIntControlType(BlockSignature&& signature, uint32_t stackSize, BlockType blockType, CatchKind catchKind = CatchKind::Catch)
: m_signature(WTF::move(signature))
, m_blockType(blockType)
, m_catchKind(catchKind)
, m_stackSize(stackSize)
{ }
static bool isIf(const IPIntControlType& control) { return control.blockType() == BlockType::If; }
static bool isElse(const IPIntControlType& control) { return control.blockType() == BlockType::Else; }
static bool isTry(const IPIntControlType& control) { return control.blockType() == BlockType::Try; }
static bool isTryTable(const IPIntControlType& control) { return control.blockType() == BlockType::TryTable; }
static bool isAnyCatch(const IPIntControlType& control) { return control.blockType() == BlockType::Catch; }
static bool isTopLevel(const IPIntControlType& control) { return control.blockType() == BlockType::TopLevel; }
static bool isLoop(const IPIntControlType& control) { return control.blockType() == BlockType::Loop; }
static bool isBlock(const IPIntControlType& control) { return control.blockType() == BlockType::Block; }
static bool isCatch(const IPIntControlType& control)
{
if (control.blockType() != BlockType::Catch)
return false;
return control.catchKind() == CatchKind::Catch;
}
void dump(PrintStream&) const
{ }
BlockType blockType() const { return m_blockType; }
CatchKind catchKind() const { return m_catchKind; }
const BlockSignature& signature() const { return m_signature; }
unsigned stackSize() const { return m_stackSize; }
Type branchTargetType(unsigned i) const
{
ASSERT(i < branchTargetArity());
if (blockType() == BlockType::Loop)
return m_signature.argumentType(i);
return m_signature.returnType(i);
}
unsigned branchTargetArity() const
{
return isLoop(*this)
? m_signature.argumentCount()
: m_signature.returnCount();
}
private:
BlockSignature m_signature;
BlockType m_blockType;
CatchKind m_catchKind;
int32_t m_pendingOffset { -1 };
uint32_t m_index { 0 };
uint32_t m_pc { 0 }; // where am i?
uint32_t m_mc { 0 };
uint32_t m_pcEnd { 0 };
uint32_t m_stackSize { 0 };
uint32_t m_tryDepth { 0 };
Vector<IPIntLocation> m_catchesAwaitingFixup;
struct TryTableTarget {
CatchKind type;
uint32_t tag;
const TypeDefinition* exceptionSignature;
ControlRef target;
};
Vector<TryTableTarget> m_tryTableTargets;
};
class IPIntGenerator {
public:
IPIntGenerator(ModuleInformation&, FunctionCodeIndex, const TypeDefinition&, std::span<const uint8_t>, FunctionDebugInfo* = nullptr);
static constexpr bool shouldFuseBranchCompare = false;
using ControlType = IPIntControlType;
using ExpressionType = Value;
using CallType = CallLinkInfo::CallType;
using ResultList = Vector<Value, 8>;
using ExpressionList = Vector<Value, 1>;
using ControlEntry = FunctionParser<IPIntGenerator>::ControlEntry;
using ControlStack = FunctionParser<IPIntGenerator>::ControlStack;
using Stack = FunctionParser<IPIntGenerator>::Stack;
using TypedExpression = FunctionParser<IPIntGenerator>::TypedExpression;
using CatchHandler = FunctionParser<IPIntGenerator>::CatchHandler;
using ArgumentList = FunctionParser<IPIntGenerator>::ArgumentList;
static ExpressionType emptyExpression() { return { }; };
[[nodiscard]] PartialResult addDrop(ExpressionType);
template <typename ...Args>
[[nodiscard]] NEVER_INLINE UnexpectedResult fail(Args... args) const
{
using namespace FailureHelper; // See ADL comment in WasmParser.h.
return UnexpectedResult(makeString("WebAssembly.Module failed compiling: "_s, makeString(args)...));
}
#define WASM_COMPILE_FAIL_IF(condition, ...) do { \
if (condition) [[unlikely]] \
return fail(__VA_ARGS__); \
} while (0)
std::unique_ptr<FunctionIPIntMetadataGenerator> finalize();
[[nodiscard]] PartialResult addArguments(const TypeDefinition&);
[[nodiscard]] PartialResult addLocal(Type, uint32_t);
Value addConstant(Type, uint64_t);
// SIMD
bool usesSIMD() { return m_usesSIMD; }
void notifyFunctionUsesSIMD() { ASSERT(Options::useWasmSIMD()); m_usesSIMD = true; }
[[nodiscard]] PartialResult addSIMDLoad(ExpressionType, uint32_t, ExpressionType&);
[[nodiscard]] PartialResult addSIMDStore(ExpressionType, ExpressionType, uint32_t);
[[nodiscard]] PartialResult addSIMDSplat(SIMDLane, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDShuffle(v128_t, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDShift(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDExtmul(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDLoadSplat(SIMDLaneOperation, ExpressionType, uint32_t, ExpressionType&);
[[nodiscard]] PartialResult addSIMDLoadLane(SIMDLaneOperation, ExpressionType, ExpressionType, uint32_t, uint8_t, ExpressionType&);
[[nodiscard]] PartialResult addSIMDStoreLane(SIMDLaneOperation, ExpressionType, ExpressionType, uint32_t, uint8_t);
[[nodiscard]] PartialResult addSIMDLoadExtend(SIMDLaneOperation, ExpressionType, uint32_t, ExpressionType&);
[[nodiscard]] PartialResult addSIMDLoadPad(SIMDLaneOperation, ExpressionType, uint32_t, ExpressionType&);
ExpressionType addConstant(v128_t);
// SIMD generated
[[nodiscard]] PartialResult addExtractLane(SIMDInfo, uint8_t, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addReplaceLane(SIMDInfo, uint8_t, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDI_V(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDV_V(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDBitwiseSelect(ExpressionType, ExpressionType, ExpressionType, ExpressionType&);
#if ENABLE(B3_JIT)
[[nodiscard]] PartialResult addSIMDRelOp(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, B3::Air::Arg, ExpressionType&);
#endif
[[nodiscard]] PartialResult addSIMDV_VV(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSIMDRelaxedFMA(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType, ExpressionType&);
// References
[[nodiscard]] PartialResult addRefIsNull(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addRefFunc(FunctionSpaceIndex, ExpressionType&);
[[nodiscard]] PartialResult addRefAsNonNull(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addRefEq(ExpressionType, ExpressionType, ExpressionType&);
// Tables
[[nodiscard]] PartialResult addTableGet(unsigned, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addTableSet(unsigned, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addTableInit(unsigned, unsigned, ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addElemDrop(unsigned);
[[nodiscard]] PartialResult addTableSize(unsigned, ExpressionType&);
[[nodiscard]] PartialResult addTableGrow(unsigned, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addTableFill(unsigned, ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addTableCopy(unsigned, unsigned, ExpressionType, ExpressionType, ExpressionType);
// Locals
[[nodiscard]] PartialResult getLocal(uint32_t index, ExpressionType&);
[[nodiscard]] PartialResult setLocal(uint32_t, ExpressionType);
[[nodiscard]] PartialResult teeLocal(uint32_t, ExpressionType, ExpressionType& result);
// Globals
[[nodiscard]] PartialResult getGlobal(uint32_t, ExpressionType&);
[[nodiscard]] PartialResult setGlobal(uint32_t, ExpressionType);
// Memory
[[nodiscard]] PartialResult load(LoadOpType, ExpressionType, ExpressionType&, uint64_t);
[[nodiscard]] PartialResult store(StoreOpType, ExpressionType, ExpressionType, uint64_t);
[[nodiscard]] PartialResult addGrowMemory(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addCurrentMemory(ExpressionType&);
[[nodiscard]] PartialResult addMemoryFill(ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addMemoryCopy(ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addMemoryInit(unsigned, ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addDataDrop(unsigned);
// Atomics
[[nodiscard]] PartialResult atomicLoad(ExtAtomicOpType, Type, ExpressionType, ExpressionType&, uint32_t);
[[nodiscard]] PartialResult atomicStore(ExtAtomicOpType, Type, ExpressionType, ExpressionType, uint32_t);
[[nodiscard]] PartialResult atomicBinaryRMW(ExtAtomicOpType, Type, ExpressionType, ExpressionType, ExpressionType&, uint32_t);
[[nodiscard]] PartialResult atomicCompareExchange(ExtAtomicOpType, Type, ExpressionType, ExpressionType, ExpressionType, ExpressionType&, uint32_t);
[[nodiscard]] PartialResult atomicWait(ExtAtomicOpType, ExpressionType, ExpressionType, ExpressionType, ExpressionType&, uint32_t);
[[nodiscard]] PartialResult atomicNotify(ExtAtomicOpType, ExpressionType, ExpressionType, ExpressionType&, uint32_t);
[[nodiscard]] PartialResult atomicFence(ExtAtomicOpType, uint8_t);
// Saturated truncation
[[nodiscard]] PartialResult truncSaturated(Ext1OpType, ExpressionType, ExpressionType&, Type, Type);
// GC
[[nodiscard]] PartialResult addRefI31(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI31GetS(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI31GetU(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addArrayNew(uint32_t, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addArrayNewDefault(uint32_t, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addArrayNewData(uint32_t, uint32_t, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addArrayNewElem(uint32_t, uint32_t, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addArrayNewFixed(uint32_t, ArgumentList&, ExpressionType&);
[[nodiscard]] PartialResult addArrayGet(ExtGCOpType, uint32_t, ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addArraySet(uint32_t, ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addArrayLen(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addArrayFill(uint32_t, ExpressionType, ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addArrayCopy(uint32_t, ExpressionType, ExpressionType, uint32_t, ExpressionType, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addArrayInitElem(uint32_t, ExpressionType, ExpressionType, uint32_t, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addArrayInitData(uint32_t, ExpressionType, ExpressionType, uint32_t, ExpressionType, ExpressionType);
[[nodiscard]] PartialResult addStructNew(uint32_t, ArgumentList&, ExpressionType&);
[[nodiscard]] PartialResult addStructNewDefault(uint32_t, ExpressionType&);
[[nodiscard]] PartialResult addStructGet(ExtGCOpType, ExpressionType, const StructType&, uint32_t, ExpressionType&);
[[nodiscard]] PartialResult addStructSet(ExpressionType, const StructType&, uint32_t, ExpressionType);
[[nodiscard]] PartialResult addRefTest(ExpressionType, bool, int32_t, bool, ExpressionType&);
[[nodiscard]] PartialResult addRefCast(ExpressionType, bool, int32_t, ExpressionType&);
[[nodiscard]] PartialResult addAnyConvertExtern(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addExternConvertAny(ExpressionType, ExpressionType&);
// Basic operators
[[nodiscard]] PartialResult addI32DivS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32RemS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32DivU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32RemU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64DivS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64RemS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64DivU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64RemU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Ctz(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Popcnt(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Popcnt(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Nearest(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Nearest(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Trunc(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Trunc(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32TruncSF64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32TruncSF32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32TruncUF64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32TruncUF32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64TruncSF64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64TruncSF32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64TruncUF64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64TruncUF32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Ceil(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Mul(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Sub(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Le(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32DemoteF64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Ne(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Lt(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Min(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Max(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Min(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Max(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Mul(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Div(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Clz(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Copysign(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32ReinterpretI32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Ne(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Gt(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Sqrt(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Ge(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64GtS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64GtU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Div(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Add(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32LeU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32LeS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Ne(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Clz(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Neg(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32And(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32LtU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Rotr(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Abs(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32LtS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Eq(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Copysign(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32ConvertSI64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Rotl(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Lt(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64ConvertSI32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Eq(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Le(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Ge(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32ShrU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32ConvertUI32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32ShrS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32GeU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Ceil(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32GeS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Shl(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Floor(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Xor(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Abs(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Mul(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Sub(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32ReinterpretF32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Add(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Sub(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Or(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64LtU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64LtS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64ConvertSI64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Xor(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64GeU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Mul(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Sub(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64PromoteF32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Add(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64GeS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64ExtendUI32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Ne(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64ReinterpretI64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Eq(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Eq(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Floor(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32ConvertSI32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64And(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Or(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Ctz(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Eqz(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Eqz(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64ReinterpretF64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64ConvertUI32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32ConvertUI64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64ConvertUI64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64ShrS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64ShrU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Sqrt(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Shl(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF32Gt(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32WrapI64(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Rotl(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Rotr(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32GtU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64ExtendSI32(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Extend8S(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32Extend16S(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Extend8S(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Extend16S(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Extend32S(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI32GtS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addF64Neg(ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64LeU(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64LeS(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addI64Add(ExpressionType, ExpressionType, ExpressionType&);
[[nodiscard]] PartialResult addSelect(ExpressionType, ExpressionType, ExpressionType, ExpressionType&);
// Control flow
[[nodiscard]] ControlType addTopLevel(BlockSignature&&);
[[nodiscard]] PartialResult addBlock(BlockSignature&&, Stack&, ControlType&, Stack&);
[[nodiscard]] PartialResult addLoop(BlockSignature&&, Stack&, ControlType&, Stack&, uint32_t);
[[nodiscard]] PartialResult addIf(ExpressionType, BlockSignature&&, Stack&, ControlType&, Stack&);
[[nodiscard]] PartialResult addElse(ControlType&, Stack&);
[[nodiscard]] PartialResult addElseToUnreachable(ControlType&);
[[nodiscard]] PartialResult addTry(BlockSignature&&, Stack&, ControlType&, Stack&);
[[nodiscard]] PartialResult addTryTable(BlockSignature&&, Stack& enclosingStack, const Vector<CatchHandler>& targets, ControlType& result, Stack& newStack);
[[nodiscard]] PartialResult addCatch(unsigned, const TypeDefinition&, Stack&, ControlType&, ResultList&);
[[nodiscard]] PartialResult addCatchToUnreachable(unsigned, const TypeDefinition&, ControlType&, ResultList&);
[[nodiscard]] PartialResult addCatchAll(Stack&, ControlType&);
[[nodiscard]] PartialResult addCatchAllToUnreachable(ControlType&);
[[nodiscard]] PartialResult addDelegate(ControlType&, ControlType&);
[[nodiscard]] PartialResult addDelegateToUnreachable(ControlType&, ControlType&);
[[nodiscard]] PartialResult addThrow(unsigned, ArgumentList&, Stack&);
[[nodiscard]] PartialResult addRethrow(unsigned, ControlType&);
[[nodiscard]] PartialResult addThrowRef(ExpressionType, Stack&);
[[nodiscard]] PartialResult addReturn(const ControlType&, const Stack&);
[[nodiscard]] PartialResult addBranch(ControlType&, ExpressionType, const Stack&);
[[nodiscard]] PartialResult addBranchNull(ControlType&, ExpressionType, Stack&, bool, ExpressionType&);
[[nodiscard]] PartialResult addBranchCast(ControlType&, ExpressionType, Stack&, bool, int32_t, bool);
[[nodiscard]] PartialResult addSwitch(ExpressionType, const Vector<ControlType*>&, ControlType&, const Stack&);
[[nodiscard]] PartialResult endBlock(ControlEntry&, Stack&);
void endTryTable(const ControlType& data);
[[nodiscard]] PartialResult addEndToUnreachable(ControlEntry&, Stack&);
[[nodiscard]] PartialResult endTopLevel(const Stack&);
// Fused comparison stubs (TODO: make use of these for better codegen)
[[nodiscard]] PartialResult addFusedBranchCompare(OpType, ControlType&, ExpressionType, const Stack&) { RELEASE_ASSERT_NOT_REACHED(); }
[[nodiscard]] PartialResult addFusedBranchCompare(OpType, ControlType&, ExpressionType, ExpressionType, const Stack&) { RELEASE_ASSERT_NOT_REACHED(); }
[[nodiscard]] PartialResult addFusedIfCompare(OpType, ExpressionType, BlockSignature&&, Stack&, ControlType&, Stack&) { RELEASE_ASSERT_NOT_REACHED(); }
[[nodiscard]] PartialResult addFusedIfCompare(OpType, ExpressionType, ExpressionType, BlockSignature&&, Stack&, ControlType&, Stack&) { RELEASE_ASSERT_NOT_REACHED(); }
// Calls
[[nodiscard]] PartialResult addCall(unsigned, FunctionSpaceIndex, const TypeDefinition&, ArgumentList&, ResultList&, CallType = CallType::Call);
[[nodiscard]] PartialResult addCallIndirect(unsigned, unsigned, const TypeDefinition&, ArgumentList&, ResultList&, CallType = CallType::Call);
[[nodiscard]] PartialResult addCallRef(unsigned, const TypeDefinition&, ArgumentList&, ResultList&, CallType = CallType::Call);
[[nodiscard]] PartialResult addUnreachable();
[[nodiscard]] PartialResult addCrash();
void setParser(FunctionParser<IPIntGenerator>* parser) { m_parser = parser; };
size_t getCurrentInstructionLength()
{
return m_parser->offset() - m_parser->currentOpcodeStartingOffset();
}
void addCallCommonData(const FunctionSignature&, const CallInformation&);
void addTailCallCommonData(const FunctionSignature&, const CallInformation&);
void didFinishParsingLocals()
{
m_metadata->m_bytecodeOffset = m_parser->offset();
}
void didPopValueFromStack(ExpressionType, ASCIILiteral) { }
void willParseOpcode() { }
void willParseExtendedOpcode() { }
void didParseOpcode()
{
if (!m_parser->unreachableBlocks()) {
ASSERT(m_parser->getStackHeightInValues() == m_stackSize.value());
if (Options::enableWasmDebugger()) [[unlikely]] {
if (m_debugInfo) {
OpType currentOpcode = m_parser->currentOpcode();
bool isControlFlowInstruction = Wasm::isControlFlowInstructionWithExtGC(currentOpcode, [this]() {
return m_parser->currentExtendedOpcode();
});
if (!isControlFlowInstruction || currentOpcode == AnnotatedSelect)
RECORD_NEXT_INSTRUCTION(curPC(), nextPC());
}
}
}
}
void dump(const ControlStack&, const Stack*);
void convertTryToCatch(ControlType& tryBlock, CatchKind);
ALWAYS_INLINE void changeStackSize(int delta)
{
m_stackSize += delta;
if (delta > 0)
m_maxStackSize = std::max(m_maxStackSize, m_stackSize.value());
}
void coalesceControlFlow(bool force = false);
void resolveEntryTarget(unsigned, IPIntLocation);
void resolveExitTarget(unsigned, IPIntLocation);
void tryToResolveEntryTarget(uint32_t index, IPIntLocation loc, uint8_t*)
{
m_controlStructuresAwaitingCoalescing[index].m_awaitingEntryTarget.append(loc);
}
void tryToResolveExitTarget(uint32_t index, IPIntLocation loc, uint8_t*)
{
m_controlStructuresAwaitingCoalescing[index].m_awaitingExitTarget.append(loc);
}
void tryToResolveBranchTarget(ControlType& targetBlock, IPIntLocation loc, uint8_t* metadata)
{
if (ControlType::isTopLevel(targetBlock)) {
m_jumpLocationsAwaitingEnd.append(loc);
return;
}
auto index = targetBlock.m_index;
auto&>
if (target.isLoop) {
ASSERT(target.m_entryResolved);
IPInt::BlockMetadata md = { static_cast<int32_t>(target.m_entryTarget.pc - loc.pc), static_cast<int32_t>(target.m_entryTarget.mc - loc.mc) };
WRITE_TO_METADATA(metadata + loc.mc, md, IPInt::BlockMetadata);
RECORD_NEXT_INSTRUCTION(loc.pc, target.m_entryTarget.pc);
} else {
ASSERT(!target.m_exitResolved);
target.m_awaitingBranchTarget.append(loc);
}
}
ALWAYS_INLINE const CallInformation& cachedCallInformationFor(const FunctionSignature& signature)
{
if (m_cachedSignature != &signature) {
m_cachedSignature = &signature;
m_cachedCallBytecode.shrink(0);
m_cachedCallInformation = wasmCallingConvention().callInformationFor(signature, CallRole::Caller);
}
return m_cachedCallInformation;
}
static constexpr bool tierSupportsSIMD() { return true; }
static constexpr bool validateFunctionBodySize = true;
private:
Checked<uint32_t> m_stackSize { 0 };
uint32_t m_maxStackSize { 0 };
Checked<uint32_t> m_tryDepth { 0 };
uint32_t m_maxTryDepth { 0 };
FunctionParser<IPIntGenerator>* m_parser { nullptr };
ModuleInformation& m_info;
const FunctionCodeIndex m_functionIndex;
std::unique_ptr<FunctionIPIntMetadataGenerator> m_metadata;
struct ControlStructureAwaitingCoalescing {
Vector<IPIntLocation, 16> m_awaitingEntryTarget { };
Vector<IPIntLocation, 16> m_awaitingBranchTarget { };
Vector<IPIntLocation, 16> m_awaitingExitTarget { };
IPIntLocation m_entryTarget { 0, 0 }; // where do we go when entering normally?
IPIntLocation m_exitTarget { 0, 0 }; // where do we go when leaving?
uint32_t startPC { 0 };
bool isLoop { false };
bool m_entryResolved { false };
bool m_exitResolved { false };
};
Vector<ControlStructureAwaitingCoalescing, 16> m_controlStructuresAwaitingCoalescing;
struct QueuedCoalesceRequest {
size_t index;
bool isEntry;
};
Vector<QueuedCoalesceRequest, 16> m_coalesceQueue;
// if this is 0, all our control structures have been coalesced and we can clean up the vector
unsigned m_coalesceDebt { 0 };
// exit loations can still be unresolved when the ControlType* dies, so we put them here
Vector<IPIntLocation> m_exitHandlersAwaitingCoalescing;
// all jumps that go to the top level and return
Vector<IPIntLocation> m_jumpLocationsAwaitingEnd;
inline uint32_t curPC() { return m_parser->currentOpcodeStartingOffset() - m_metadata->m_bytecodeOffset; }
inline uint32_t nextPC() { return m_parser->offset() - m_metadata->m_bytecodeOffset; }
inline uint32_t curMC() { return m_metadata->m_metadata.size(); }
CallInformation m_cachedCallInformation { };
const FunctionSignature* m_cachedSignature { nullptr };
Vector<uint8_t, 16> m_cachedCallBytecode;
Checked<int32_t> m_argumentAndResultsStackSize;
bool m_usesRethrow { false };
bool m_usesSIMD { false };
size_t m_functionStartByteOffset { 0 };
FunctionDebugInfo* m_debugInfo { nullptr };
};
// use if (true) to avoid warnings.
#define IPINT_UNIMPLEMENTED { if (true) { CRASH(); } return { }; }
IPIntGenerator::IPIntGenerator(ModuleInformation& info, FunctionCodeIndex functionIndex, const TypeDefinition&, std::span<const uint8_t> bytecode, FunctionDebugInfo* debugInfo)
: m_info(info)
, m_functionIndex(functionIndex)
, m_metadata(WTF::makeUnique<FunctionIPIntMetadataGenerator>(functionIndex, bytecode))
, m_functionStartByteOffset(info.functions[functionIndex].start)
, m_debugInfo(debugInfo)
{
}
[[nodiscard]] PartialResult IPIntGenerator::addDrop(ExpressionType)
{
changeStackSize(-1);
return { };
}
Value IPIntGenerator::addConstant(Type type, uint64_t value)
{
changeStackSize(1);
m_metadata->addLEB128ConstantAndLengthForType(type, value, getCurrentInstructionLength());
return { };
}
// SIMD
[[nodiscard]] PartialResult IPIntGenerator::addSIMDLoad(ExpressionType, uint32_t offset, ExpressionType&)
{
changeStackSize(0); // Pop address, push v128 value (net change = 0)
m_metadata->addLEB128ConstantInt32AndLength(offset, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDStore(ExpressionType, ExpressionType, uint32_t offset)
{
changeStackSize(-2); // Pop address and v128 value
m_metadata->addLEB128ConstantInt32AndLength(offset, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDSplat(SIMDLane, ExpressionType, ExpressionType&)
{
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDShuffle(v128_t, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-1);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDShift(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-1);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDExtmul(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-1);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDLoadSplat(SIMDLaneOperation, ExpressionType pointer, uint32_t offset, ExpressionType& result)
{
return addSIMDLoad(pointer, offset, result);
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDLoadLane(SIMDLaneOperation, ExpressionType, ExpressionType, uint32_t offset, uint8_t, ExpressionType&)
{
changeStackSize(-1);
m_metadata->addLEB128ConstantInt32AndLength(offset, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDStoreLane(SIMDLaneOperation, ExpressionType, ExpressionType, uint32_t offset, uint8_t)
{
changeStackSize(-2);
m_metadata->addLEB128ConstantInt32AndLength(offset, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDLoadExtend(SIMDLaneOperation, ExpressionType pointer, uint32_t offset, ExpressionType& result)
{
return addSIMDLoad(pointer, offset, result);
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDLoadPad(SIMDLaneOperation, ExpressionType pointer, uint32_t offset, ExpressionType& result)
{
return addSIMDLoad(pointer, offset, result);
}
IPIntGenerator::ExpressionType IPIntGenerator::addConstant(v128_t)
{
changeStackSize(1);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addExtractLane(SIMDInfo, uint8_t, ExpressionType, ExpressionType&)
{
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addReplaceLane(SIMDInfo, uint8_t, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-1);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDI_V(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType&)
{
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDV_V(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType&)
{
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDBitwiseSelect(ExpressionType, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-2); // 3 operands, 1 result
return { };
}
#if ENABLE(B3_JIT)
[[nodiscard]] PartialResult IPIntGenerator::addSIMDRelOp(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, B3::Air::Arg, ExpressionType&)
{
changeStackSize(-1);
return { };
}
#endif
[[nodiscard]] PartialResult IPIntGenerator::addSIMDV_VV(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-1); // Pop two v128 values, push one v128 value
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addSIMDRelaxedFMA(SIMDLaneOperation, SIMDInfo, ExpressionType, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-2); // Pop three v128 values, push one v128 value
return { };
}
// References
[[nodiscard]] PartialResult IPIntGenerator::addRefIsNull(ExpressionType, ExpressionType&)
{
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addRefFunc(FunctionSpaceIndex index, ExpressionType&)
{
changeStackSize(1);
m_metadata->addLEB128ConstantInt32AndLength(index, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addRefAsNonNull(ExpressionType, ExpressionType&)
{
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addRefEq(ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-1);
return { };
}
// Tables
[[nodiscard]] PartialResult IPIntGenerator::addTableGet(unsigned index, ExpressionType, ExpressionType&)
{
m_metadata->addLEB128ConstantInt32AndLength(index, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addTableSet(unsigned index, ExpressionType, ExpressionType)
{
changeStackSize(-2);
m_metadata->addLEB128ConstantInt32AndLength(index, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addTableInit(unsigned elementIndex, unsigned tableIndex, ExpressionType, ExpressionType, ExpressionType)
{
changeStackSize(-3);
IPInt::TableInitMetadata table {
.elementIndex = safeCast<uint32_t>(elementIndex),
.tableIndex = safeCast<uint32_t>(tableIndex),
.instructionLength = { .length = safeCast<uint8_t>(getCurrentInstructionLength()) }
};
m_metadata->appendMetadata(table);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addElemDrop(unsigned elementIndex)
{
m_metadata->addLEB128ConstantInt32AndLength(elementIndex, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addTableSize(unsigned tableIndex, ExpressionType&)
{
changeStackSize(1);
m_metadata->addLEB128ConstantInt32AndLength(tableIndex, getCurrentInstructionLength());
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addTableGrow(unsigned tableIndex, ExpressionType, ExpressionType, ExpressionType&)
{
changeStackSize(-1);
IPInt::TableGrowMetadata table {
.tableIndex = safeCast<uint32_t>(tableIndex),
.instructionLength = { .length = safeCast<uint8_t>(getCurrentInstructionLength()) }
};
m_metadata->appendMetadata(table);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addTableFill(unsigned tableIndex, ExpressionType, ExpressionType, ExpressionType)
{
changeStackSize(-3);
IPInt::TableFillMetadata table {
.tableIndex = safeCast<uint32_t>(tableIndex),
.instructionLength = { .length = safeCast<uint8_t>(getCurrentInstructionLength()) }
};
m_metadata->appendMetadata(table);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addTableCopy(unsigned dstTableIndex, unsigned srcTableIndex, ExpressionType, ExpressionType, ExpressionType)
{
changeStackSize(-3);
IPInt::TableCopyMetadata table {
.dstTableIndex = safeCast<uint32_t>(dstTableIndex),
.srcTableIndex = safeCast<uint32_t>(srcTableIndex),
.instructionLength = { .length = safeCast<uint8_t>(getCurrentInstructionLength()) }
};
m_metadata->appendMetadata(table);
return { };
}
// Locals and Globals
[[nodiscard]] PartialResult IPIntGenerator::addArguments(const TypeDefinition &signature)
{
auto sig = signature.as<FunctionSignature>();
const CallInformation callCC = wasmCallingConvention().callInformationFor(*sig, CallRole::Callee);
ASSERT(callCC.headerAndArgumentStackSizeInBytes >= callCC.headerIncludingThisSizeInBytes);
m_argumentAndResultsStackSize = WTF::roundUpToMultipleOf<stackAlignmentBytes()>(callCC.headerAndArgumentStackSizeInBytes) - callCC.headerIncludingThisSizeInBytes;
ASSERT(!Options::useWasmIPInt() || !(m_argumentAndResultsStackSize % 16)); // mINT requires this
auto numArgs = sig->argumentCount();
m_metadata->m_numLocals += numArgs;
m_metadata->m_numArguments = numArgs;
m_metadata->m_argumINTBytecode.reserveInitialCapacity(sig->argumentCount() + 1);
constexpr static int NUM_ARGUMINT_GPRS = 8;
constexpr static int NUM_ARGUMINT_FPRS = 8;
ASSERT_UNUSED(NUM_ARGUMINT_GPRS, wasmCallingConvention().jsrArgs.size() <= NUM_ARGUMINT_GPRS);
ASSERT_UNUSED(NUM_ARGUMINT_FPRS, wasmCallingConvention().fprArgs.size() <= NUM_ARGUMINT_FPRS);
// 0x00 - 0x07: GPR 0-7
// 0x08 - 0x0f: FPR 0-3
// 0x10: stack
// 0x11: end
for (size_t i = 0; i < numArgs; ++i) {
const ArgumentLocation& argLoc = callCC.params[i];
const ValueLocation& loc = argLoc.location;
if (loc.isGPR()) {
#if USE(JSVALUE64)
ASSERT_UNUSED(NUM_ARGUMINT_GPRS, GPRInfo::toArgumentIndex(loc.jsr().gpr()) < NUM_ARGUMINT_GPRS);
m_metadata->m_argumINTBytecode.append(static_cast<uint8_t>(IPInt::ArgumINTBytecode::ArgGPR) + GPRInfo::toArgumentIndex(loc.jsr().gpr()));
#elif USE(JSVALUE32_64)
ASSERT_UNUSED(NUM_ARGUMINT_GPRS, GPRInfo::toArgumentIndex(loc.jsr().payloadGPR()) < NUM_ARGUMINT_GPRS);
ASSERT_UNUSED(NUM_ARGUMINT_GPRS, GPRInfo::toArgumentIndex(loc.jsr().tagGPR()) < NUM_ARGUMINT_GPRS);
m_metadata->m_argumINTBytecode.append(static_cast<uint8_t>(IPInt::ArgumINTBytecode::ArgGPR) + GPRInfo::toArgumentIndex(loc.jsr().gpr(WhichValueWord::PayloadWord)) / 2);
#endif
} else if (loc.isFPR()) {
ASSERT_UNUSED(NUM_ARGUMINT_FPRS, FPRInfo::toArgumentIndex(loc.fpr()) < NUM_ARGUMINT_FPRS);
m_metadata->m_argumINTBytecode.append(static_cast<uint8_t>(IPInt::ArgumINTBytecode::ArgFPR) + FPRInfo::toArgumentIndex(loc.fpr()));
} else {
RELEASE_ASSERT(loc.isStack());
switch (argLoc.width) {
case Width::Width64:
m_metadata->m_argumINTBytecode.append(static_cast<uint8_t>(IPInt::ArgumINTBytecode::Stack));
break;
case Width::Width128:
m_metadata->m_argumINTBytecode.append(static_cast<uint8_t>(IPInt::ArgumINTBytecode::StackVector));
break;
default:
RELEASE_ASSERT_NOT_REACHED("No argumINT bytecode for result width");
}
}
}
m_metadata->m_argumINTBytecode.append(static_cast<uint8_t>(IPInt::ArgumINTBytecode::End));
if (Options::enableWasmDebugger()) [[unlikely]] {
if (m_debugInfo) {
auto* localTypes = &m_debugInfo->locals;
for (size_t i = 0; i < numArgs; ++i)
localTypes->append(sig->argumentType(i));
}
}
m_metadata->addReturnData(*sig, callCC);
return { };
}
[[nodiscard]] PartialResult IPIntGenerator::addLocal(Type localType, uint32_t count)
{
// push 0x00 or 0xff (for bit hacks) to the metadata depending on if we have a primitive or a reference
if (isRefType(localType)) {
for (unsigned i = 0; i < count; ++i)
m_metadata->m_argumINTBytecode.append(0xff);
} else {
for (unsigned i = 0; i < count; ++i)
m_metadata->m_argumINTBytecode.append(0);