ef7ca14fa5
For inline WebAssembly, passing a numeric operand to global.get is unsupported. This causes encodeInstruction to reach an llvm_unreachable call, leading to undefined behaviors. This patch fixes the issue for this invalid instruction encoding, making it report an error by adding an MCContext field in class WebAssemblyMCCodeEmitter. Reviewed By: sbc100, bryanpkc Differential Revision: https://reviews.llvm.org/D154734
542 lines
16 KiB
C++
542 lines
16 KiB
C++
//==- WebAssemblyMCTargetDesc.h - WebAssembly Target Descriptions -*- C++ -*-=//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file provides WebAssembly-specific target descriptions.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYMCTARGETDESC_H
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#define LLVM_LIB_TARGET_WEBASSEMBLY_MCTARGETDESC_WEBASSEMBLYMCTARGETDESC_H
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#include "../WebAssemblySubtarget.h"
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#include "llvm/BinaryFormat/Wasm.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCInstrDesc.h"
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#include "llvm/Support/DataTypes.h"
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#include <memory>
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namespace llvm {
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class MCAsmBackend;
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class MCCodeEmitter;
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class MCInstrInfo;
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class MCObjectTargetWriter;
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class Triple;
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MCCodeEmitter *createWebAssemblyMCCodeEmitter(const MCInstrInfo &MCII,
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MCContext &Ctx);
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MCAsmBackend *createWebAssemblyAsmBackend(const Triple &TT);
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std::unique_ptr<MCObjectTargetWriter>
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createWebAssemblyWasmObjectWriter(bool Is64Bit, bool IsEmscripten);
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namespace WebAssembly {
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// Exception handling / setjmp-longjmp handling command-line options
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extern cl::opt<bool> WasmEnableEmEH; // asm.js-style EH
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extern cl::opt<bool> WasmEnableEmSjLj; // asm.js-style SjLJ
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extern cl::opt<bool> WasmEnableEH; // EH using Wasm EH instructions
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extern cl::opt<bool> WasmEnableSjLj; // SjLj using Wasm EH instructions
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enum OperandType {
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/// Basic block label in a branch construct.
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OPERAND_BASIC_BLOCK = MCOI::OPERAND_FIRST_TARGET,
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/// Local index.
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OPERAND_LOCAL,
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/// Global index.
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OPERAND_GLOBAL,
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/// 32-bit integer immediates.
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OPERAND_I32IMM,
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/// 64-bit integer immediates.
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OPERAND_I64IMM,
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/// 32-bit floating-point immediates.
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OPERAND_F32IMM,
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/// 64-bit floating-point immediates.
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OPERAND_F64IMM,
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/// 8-bit vector lane immediate
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OPERAND_VEC_I8IMM,
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/// 16-bit vector lane immediate
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OPERAND_VEC_I16IMM,
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/// 32-bit vector lane immediate
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OPERAND_VEC_I32IMM,
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/// 64-bit vector lane immediate
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OPERAND_VEC_I64IMM,
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/// 32-bit unsigned function indices.
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OPERAND_FUNCTION32,
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/// 32-bit unsigned memory offsets.
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OPERAND_OFFSET32,
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/// 64-bit unsigned memory offsets.
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OPERAND_OFFSET64,
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/// p2align immediate for load and store address alignment.
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OPERAND_P2ALIGN,
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/// signature immediate for block/loop.
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OPERAND_SIGNATURE,
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/// type signature immediate for call_indirect.
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OPERAND_TYPEINDEX,
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/// Tag index.
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OPERAND_TAG,
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/// A list of branch targets for br_list.
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OPERAND_BRLIST,
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/// 32-bit unsigned table number.
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OPERAND_TABLE,
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};
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} // end namespace WebAssembly
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namespace WebAssemblyII {
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/// Target Operand Flag enum.
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enum TOF {
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MO_NO_FLAG = 0,
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// On a symbol operand this indicates that the immediate is a wasm global
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// index. The value of the wasm global will be set to the symbol address at
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// runtime. This adds a level of indirection similar to the GOT on native
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// platforms.
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MO_GOT,
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// Same as MO_GOT but the address stored in the global is a TLS address.
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MO_GOT_TLS,
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// On a symbol operand this indicates that the immediate is the symbol
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// address relative the __memory_base wasm global.
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// Only applicable to data symbols.
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MO_MEMORY_BASE_REL,
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// On a symbol operand this indicates that the immediate is the symbol
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// address relative the __tls_base wasm global.
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// Only applicable to data symbols.
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MO_TLS_BASE_REL,
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// On a symbol operand this indicates that the immediate is the symbol
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// address relative the __table_base wasm global.
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// Only applicable to function symbols.
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MO_TABLE_BASE_REL,
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};
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} // end namespace WebAssemblyII
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} // end namespace llvm
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// Defines symbolic names for WebAssembly registers. This defines a mapping from
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// register name to register number.
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//
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#define GET_REGINFO_ENUM
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#include "WebAssemblyGenRegisterInfo.inc"
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// Defines symbolic names for the WebAssembly instructions.
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//
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#define GET_INSTRINFO_ENUM
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#define GET_INSTRINFO_MC_HELPER_DECLS
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#include "WebAssemblyGenInstrInfo.inc"
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namespace llvm {
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namespace WebAssembly {
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/// Instruction opcodes emitted via means other than CodeGen.
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static const unsigned Nop = 0x01;
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static const unsigned End = 0x0b;
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/// Return the default p2align value for a load or store with the given opcode.
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inline unsigned GetDefaultP2AlignAny(unsigned Opc) {
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switch (Opc) {
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#define WASM_LOAD_STORE(NAME) \
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case WebAssembly::NAME##_A32: \
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case WebAssembly::NAME##_A64: \
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case WebAssembly::NAME##_A32_S: \
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case WebAssembly::NAME##_A64_S:
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WASM_LOAD_STORE(LOAD8_S_I32)
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WASM_LOAD_STORE(LOAD8_U_I32)
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WASM_LOAD_STORE(LOAD8_S_I64)
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WASM_LOAD_STORE(LOAD8_U_I64)
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WASM_LOAD_STORE(ATOMIC_LOAD8_U_I32)
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WASM_LOAD_STORE(ATOMIC_LOAD8_U_I64)
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WASM_LOAD_STORE(STORE8_I32)
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WASM_LOAD_STORE(STORE8_I64)
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WASM_LOAD_STORE(ATOMIC_STORE8_I32)
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WASM_LOAD_STORE(ATOMIC_STORE8_I64)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_ADD_I32)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_ADD_I64)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_SUB_I32)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_SUB_I64)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_AND_I32)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_AND_I64)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_OR_I32)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_OR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_XOR_I32)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_XOR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_XCHG_I32)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_XCHG_I64)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_CMPXCHG_I32)
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WASM_LOAD_STORE(ATOMIC_RMW8_U_CMPXCHG_I64)
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WASM_LOAD_STORE(LOAD8_SPLAT)
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WASM_LOAD_STORE(LOAD_LANE_I8x16)
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WASM_LOAD_STORE(STORE_LANE_I8x16)
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return 0;
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WASM_LOAD_STORE(LOAD16_S_I32)
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WASM_LOAD_STORE(LOAD16_U_I32)
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WASM_LOAD_STORE(LOAD16_S_I64)
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WASM_LOAD_STORE(LOAD16_U_I64)
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WASM_LOAD_STORE(ATOMIC_LOAD16_U_I32)
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WASM_LOAD_STORE(ATOMIC_LOAD16_U_I64)
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WASM_LOAD_STORE(STORE16_I32)
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WASM_LOAD_STORE(STORE16_I64)
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WASM_LOAD_STORE(ATOMIC_STORE16_I32)
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WASM_LOAD_STORE(ATOMIC_STORE16_I64)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_ADD_I32)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_ADD_I64)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_SUB_I32)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_SUB_I64)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_AND_I32)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_AND_I64)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_OR_I32)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_OR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_XOR_I32)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_XOR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_XCHG_I32)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_XCHG_I64)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_CMPXCHG_I32)
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WASM_LOAD_STORE(ATOMIC_RMW16_U_CMPXCHG_I64)
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WASM_LOAD_STORE(LOAD16_SPLAT)
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WASM_LOAD_STORE(LOAD_LANE_I16x8)
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WASM_LOAD_STORE(STORE_LANE_I16x8)
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return 1;
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WASM_LOAD_STORE(LOAD_I32)
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WASM_LOAD_STORE(LOAD_F32)
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WASM_LOAD_STORE(STORE_I32)
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WASM_LOAD_STORE(STORE_F32)
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WASM_LOAD_STORE(LOAD32_S_I64)
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WASM_LOAD_STORE(LOAD32_U_I64)
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WASM_LOAD_STORE(STORE32_I64)
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WASM_LOAD_STORE(ATOMIC_LOAD_I32)
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WASM_LOAD_STORE(ATOMIC_LOAD32_U_I64)
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WASM_LOAD_STORE(ATOMIC_STORE_I32)
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WASM_LOAD_STORE(ATOMIC_STORE32_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_ADD_I32)
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WASM_LOAD_STORE(ATOMIC_RMW32_U_ADD_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_SUB_I32)
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WASM_LOAD_STORE(ATOMIC_RMW32_U_SUB_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_AND_I32)
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WASM_LOAD_STORE(ATOMIC_RMW32_U_AND_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_OR_I32)
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WASM_LOAD_STORE(ATOMIC_RMW32_U_OR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_XOR_I32)
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WASM_LOAD_STORE(ATOMIC_RMW32_U_XOR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_XCHG_I32)
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WASM_LOAD_STORE(ATOMIC_RMW32_U_XCHG_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_CMPXCHG_I32)
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WASM_LOAD_STORE(ATOMIC_RMW32_U_CMPXCHG_I64)
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WASM_LOAD_STORE(MEMORY_ATOMIC_NOTIFY)
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WASM_LOAD_STORE(MEMORY_ATOMIC_WAIT32)
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WASM_LOAD_STORE(LOAD32_SPLAT)
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WASM_LOAD_STORE(LOAD_ZERO_I32x4)
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WASM_LOAD_STORE(LOAD_LANE_I32x4)
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WASM_LOAD_STORE(STORE_LANE_I32x4)
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return 2;
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WASM_LOAD_STORE(LOAD_I64)
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WASM_LOAD_STORE(LOAD_F64)
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WASM_LOAD_STORE(STORE_I64)
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WASM_LOAD_STORE(STORE_F64)
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WASM_LOAD_STORE(ATOMIC_LOAD_I64)
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WASM_LOAD_STORE(ATOMIC_STORE_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_ADD_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_SUB_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_AND_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_OR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_XOR_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_XCHG_I64)
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WASM_LOAD_STORE(ATOMIC_RMW_CMPXCHG_I64)
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WASM_LOAD_STORE(MEMORY_ATOMIC_WAIT64)
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WASM_LOAD_STORE(LOAD64_SPLAT)
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WASM_LOAD_STORE(LOAD_EXTEND_S_I16x8)
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WASM_LOAD_STORE(LOAD_EXTEND_U_I16x8)
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WASM_LOAD_STORE(LOAD_EXTEND_S_I32x4)
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WASM_LOAD_STORE(LOAD_EXTEND_U_I32x4)
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WASM_LOAD_STORE(LOAD_EXTEND_S_I64x2)
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WASM_LOAD_STORE(LOAD_EXTEND_U_I64x2)
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WASM_LOAD_STORE(LOAD_ZERO_I64x2)
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WASM_LOAD_STORE(LOAD_LANE_I64x2)
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WASM_LOAD_STORE(STORE_LANE_I64x2)
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return 3;
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WASM_LOAD_STORE(LOAD_V128)
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WASM_LOAD_STORE(STORE_V128)
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return 4;
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default:
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return -1;
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}
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#undef WASM_LOAD_STORE
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}
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inline unsigned GetDefaultP2Align(unsigned Opc) {
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auto Align = GetDefaultP2AlignAny(Opc);
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if (Align == -1U) {
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llvm_unreachable("Only loads and stores have p2align values");
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}
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return Align;
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}
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inline bool isConst(unsigned Opc) {
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switch (Opc) {
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case WebAssembly::CONST_I32:
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case WebAssembly::CONST_I32_S:
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case WebAssembly::CONST_I64:
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case WebAssembly::CONST_I64_S:
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case WebAssembly::CONST_F32:
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case WebAssembly::CONST_F32_S:
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case WebAssembly::CONST_F64:
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case WebAssembly::CONST_F64_S:
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case WebAssembly::CONST_V128_I8x16:
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case WebAssembly::CONST_V128_I8x16_S:
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case WebAssembly::CONST_V128_I16x8:
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case WebAssembly::CONST_V128_I16x8_S:
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case WebAssembly::CONST_V128_I32x4:
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case WebAssembly::CONST_V128_I32x4_S:
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case WebAssembly::CONST_V128_I64x2:
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case WebAssembly::CONST_V128_I64x2_S:
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case WebAssembly::CONST_V128_F32x4:
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case WebAssembly::CONST_V128_F32x4_S:
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case WebAssembly::CONST_V128_F64x2:
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case WebAssembly::CONST_V128_F64x2_S:
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return true;
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default:
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return false;
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}
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}
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inline bool isScalarConst(unsigned Opc) {
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switch (Opc) {
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case WebAssembly::CONST_I32:
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case WebAssembly::CONST_I32_S:
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case WebAssembly::CONST_I64:
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case WebAssembly::CONST_I64_S:
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case WebAssembly::CONST_F32:
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case WebAssembly::CONST_F32_S:
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case WebAssembly::CONST_F64:
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case WebAssembly::CONST_F64_S:
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return true;
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default:
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return false;
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}
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}
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inline bool isArgument(unsigned Opc) {
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switch (Opc) {
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case WebAssembly::ARGUMENT_i32:
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case WebAssembly::ARGUMENT_i32_S:
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case WebAssembly::ARGUMENT_i64:
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case WebAssembly::ARGUMENT_i64_S:
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case WebAssembly::ARGUMENT_f32:
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case WebAssembly::ARGUMENT_f32_S:
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case WebAssembly::ARGUMENT_f64:
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case WebAssembly::ARGUMENT_f64_S:
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case WebAssembly::ARGUMENT_v16i8:
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case WebAssembly::ARGUMENT_v16i8_S:
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case WebAssembly::ARGUMENT_v8i16:
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case WebAssembly::ARGUMENT_v8i16_S:
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case WebAssembly::ARGUMENT_v4i32:
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case WebAssembly::ARGUMENT_v4i32_S:
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case WebAssembly::ARGUMENT_v2i64:
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case WebAssembly::ARGUMENT_v2i64_S:
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case WebAssembly::ARGUMENT_v4f32:
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case WebAssembly::ARGUMENT_v4f32_S:
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case WebAssembly::ARGUMENT_v2f64:
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case WebAssembly::ARGUMENT_v2f64_S:
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case WebAssembly::ARGUMENT_funcref:
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case WebAssembly::ARGUMENT_funcref_S:
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case WebAssembly::ARGUMENT_externref:
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case WebAssembly::ARGUMENT_externref_S:
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return true;
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default:
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return false;
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}
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}
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inline bool isCopy(unsigned Opc) {
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switch (Opc) {
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case WebAssembly::COPY_I32:
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case WebAssembly::COPY_I32_S:
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case WebAssembly::COPY_I64:
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case WebAssembly::COPY_I64_S:
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case WebAssembly::COPY_F32:
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case WebAssembly::COPY_F32_S:
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case WebAssembly::COPY_F64:
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case WebAssembly::COPY_F64_S:
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case WebAssembly::COPY_V128:
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case WebAssembly::COPY_V128_S:
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case WebAssembly::COPY_FUNCREF:
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case WebAssembly::COPY_FUNCREF_S:
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case WebAssembly::COPY_EXTERNREF:
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case WebAssembly::COPY_EXTERNREF_S:
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return true;
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default:
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return false;
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}
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}
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inline bool isTee(unsigned Opc) {
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switch (Opc) {
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case WebAssembly::TEE_I32:
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case WebAssembly::TEE_I32_S:
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case WebAssembly::TEE_I64:
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case WebAssembly::TEE_I64_S:
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case WebAssembly::TEE_F32:
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case WebAssembly::TEE_F32_S:
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case WebAssembly::TEE_F64:
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case WebAssembly::TEE_F64_S:
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case WebAssembly::TEE_V128:
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case WebAssembly::TEE_V128_S:
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case WebAssembly::TEE_FUNCREF:
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case WebAssembly::TEE_FUNCREF_S:
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case WebAssembly::TEE_EXTERNREF:
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case WebAssembly::TEE_EXTERNREF_S:
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return true;
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default:
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return false;
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}
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}
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inline bool isCallDirect(unsigned Opc) {
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switch (Opc) {
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case WebAssembly::CALL:
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case WebAssembly::CALL_S:
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case WebAssembly::RET_CALL:
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case WebAssembly::RET_CALL_S:
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return true;
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default:
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return false;
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}
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}
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inline bool isCallIndirect(unsigned Opc) {
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switch (Opc) {
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case WebAssembly::CALL_INDIRECT:
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case WebAssembly::CALL_INDIRECT_S:
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case WebAssembly::RET_CALL_INDIRECT:
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case WebAssembly::RET_CALL_INDIRECT_S:
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return true;
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default:
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return false;
|
|
}
|
|
}
|
|
|
|
inline bool isBrTable(const MachineInstr &MI) {
|
|
switch (MI.getOpcode()) {
|
|
case WebAssembly::BR_TABLE_I32:
|
|
case WebAssembly::BR_TABLE_I32_S:
|
|
case WebAssembly::BR_TABLE_I64:
|
|
case WebAssembly::BR_TABLE_I64_S:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
inline bool isMarker(unsigned Opc) {
|
|
switch (Opc) {
|
|
case WebAssembly::BLOCK:
|
|
case WebAssembly::BLOCK_S:
|
|
case WebAssembly::END_BLOCK:
|
|
case WebAssembly::END_BLOCK_S:
|
|
case WebAssembly::LOOP:
|
|
case WebAssembly::LOOP_S:
|
|
case WebAssembly::END_LOOP:
|
|
case WebAssembly::END_LOOP_S:
|
|
case WebAssembly::TRY:
|
|
case WebAssembly::TRY_S:
|
|
case WebAssembly::END_TRY:
|
|
case WebAssembly::END_TRY_S:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
inline bool isCatch(unsigned Opc) {
|
|
switch (Opc) {
|
|
case WebAssembly::CATCH:
|
|
case WebAssembly::CATCH_S:
|
|
case WebAssembly::CATCH_ALL:
|
|
case WebAssembly::CATCH_ALL_S:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
inline bool isLocalGet(unsigned Opc) {
|
|
switch (Opc) {
|
|
case WebAssembly::LOCAL_GET_I32:
|
|
case WebAssembly::LOCAL_GET_I32_S:
|
|
case WebAssembly::LOCAL_GET_I64:
|
|
case WebAssembly::LOCAL_GET_I64_S:
|
|
case WebAssembly::LOCAL_GET_F32:
|
|
case WebAssembly::LOCAL_GET_F32_S:
|
|
case WebAssembly::LOCAL_GET_F64:
|
|
case WebAssembly::LOCAL_GET_F64_S:
|
|
case WebAssembly::LOCAL_GET_V128:
|
|
case WebAssembly::LOCAL_GET_V128_S:
|
|
case WebAssembly::LOCAL_GET_FUNCREF:
|
|
case WebAssembly::LOCAL_GET_FUNCREF_S:
|
|
case WebAssembly::LOCAL_GET_EXTERNREF:
|
|
case WebAssembly::LOCAL_GET_EXTERNREF_S:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
inline bool isLocalSet(unsigned Opc) {
|
|
switch (Opc) {
|
|
case WebAssembly::LOCAL_SET_I32:
|
|
case WebAssembly::LOCAL_SET_I32_S:
|
|
case WebAssembly::LOCAL_SET_I64:
|
|
case WebAssembly::LOCAL_SET_I64_S:
|
|
case WebAssembly::LOCAL_SET_F32:
|
|
case WebAssembly::LOCAL_SET_F32_S:
|
|
case WebAssembly::LOCAL_SET_F64:
|
|
case WebAssembly::LOCAL_SET_F64_S:
|
|
case WebAssembly::LOCAL_SET_V128:
|
|
case WebAssembly::LOCAL_SET_V128_S:
|
|
case WebAssembly::LOCAL_SET_FUNCREF:
|
|
case WebAssembly::LOCAL_SET_FUNCREF_S:
|
|
case WebAssembly::LOCAL_SET_EXTERNREF:
|
|
case WebAssembly::LOCAL_SET_EXTERNREF_S:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
inline bool isLocalTee(unsigned Opc) {
|
|
switch (Opc) {
|
|
case WebAssembly::LOCAL_TEE_I32:
|
|
case WebAssembly::LOCAL_TEE_I32_S:
|
|
case WebAssembly::LOCAL_TEE_I64:
|
|
case WebAssembly::LOCAL_TEE_I64_S:
|
|
case WebAssembly::LOCAL_TEE_F32:
|
|
case WebAssembly::LOCAL_TEE_F32_S:
|
|
case WebAssembly::LOCAL_TEE_F64:
|
|
case WebAssembly::LOCAL_TEE_F64_S:
|
|
case WebAssembly::LOCAL_TEE_V128:
|
|
case WebAssembly::LOCAL_TEE_V128_S:
|
|
case WebAssembly::LOCAL_TEE_FUNCREF:
|
|
case WebAssembly::LOCAL_TEE_FUNCREF_S:
|
|
case WebAssembly::LOCAL_TEE_EXTERNREF:
|
|
case WebAssembly::LOCAL_TEE_EXTERNREF_S:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
} // end namespace WebAssembly
|
|
} // end namespace llvm
|
|
|
|
#endif
|