177 lines
5.0 KiB
C++
177 lines
5.0 KiB
C++
//==- WebAssemblyMCTargetDesc.h - WebAssembly Target Descriptions -*- C++ -*-=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief 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 "llvm/MC/MCInstrDesc.h"
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#include "llvm/Support/DataTypes.h"
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#include "llvm/Support/Wasm.h"
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namespace llvm {
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class MCAsmBackend;
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class MCCodeEmitter;
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class MCContext;
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class MCInstrInfo;
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class MCObjectWriter;
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class MCSubtargetInfo;
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class MVT;
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class Target;
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class Triple;
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class raw_pwrite_stream;
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Target &getTheWebAssemblyTarget32();
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Target &getTheWebAssemblyTarget64();
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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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MCObjectWriter *createWebAssemblyELFObjectWriter(raw_pwrite_stream &OS,
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bool Is64Bit, uint8_t OSABI);
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MCObjectWriter *createWebAssemblyWasmObjectWriter(raw_pwrite_stream &OS,
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bool Is64Bit);
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namespace WebAssembly {
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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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/// 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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/// 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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};
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} // end namespace WebAssembly
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namespace WebAssemblyII {
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enum {
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// For variadic instructions, this flag indicates whether an operand
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// in the variable_ops range is an immediate value.
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VariableOpIsImmediate = (1 << 0),
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// For immediate values in the variable_ops range, this flag indicates
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// whether the value represents a control-flow label.
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VariableOpImmediateIsLabel = (1 << 1)
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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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#include "WebAssemblyGenInstrInfo.inc"
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#define GET_SUBTARGETINFO_ENUM
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#include "WebAssemblyGenSubtargetInfo.inc"
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namespace llvm {
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namespace WebAssembly {
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/// Return the default p2align value for a load or store with the given opcode.
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inline unsigned GetDefaultP2Align(unsigned Opcode) {
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switch (Opcode) {
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case WebAssembly::LOAD8_S_I32:
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case WebAssembly::LOAD8_U_I32:
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case WebAssembly::LOAD8_S_I64:
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case WebAssembly::LOAD8_U_I64:
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case WebAssembly::STORE8_I32:
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case WebAssembly::STORE8_I64:
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return 0;
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case WebAssembly::LOAD16_S_I32:
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case WebAssembly::LOAD16_U_I32:
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case WebAssembly::LOAD16_S_I64:
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case WebAssembly::LOAD16_U_I64:
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case WebAssembly::STORE16_I32:
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case WebAssembly::STORE16_I64:
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return 1;
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case WebAssembly::LOAD_I32:
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case WebAssembly::LOAD_F32:
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case WebAssembly::STORE_I32:
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case WebAssembly::STORE_F32:
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case WebAssembly::LOAD32_S_I64:
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case WebAssembly::LOAD32_U_I64:
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case WebAssembly::STORE32_I64:
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return 2;
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case WebAssembly::LOAD_I64:
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case WebAssembly::LOAD_F64:
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case WebAssembly::STORE_I64:
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case WebAssembly::STORE_F64:
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return 3;
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default:
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llvm_unreachable("Only loads and stores have p2align values");
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}
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}
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/// The operand number of the load or store address in load/store instructions.
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static const unsigned LoadAddressOperandNo = 3;
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static const unsigned StoreAddressOperandNo = 2;
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/// The operand number of the load or store p2align in load/store instructions.
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static const unsigned LoadP2AlignOperandNo = 1;
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static const unsigned StoreP2AlignOperandNo = 0;
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/// This is used to indicate block signatures.
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enum class ExprType {
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Void = -0x40,
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I32 = -0x01,
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I64 = -0x02,
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F32 = -0x03,
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F64 = -0x04,
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I8x16 = -0x05,
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I16x8 = -0x06,
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I32x4 = -0x07,
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F32x4 = -0x08,
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B8x16 = -0x09,
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B16x8 = -0x0a,
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B32x4 = -0x0b
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};
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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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wasm::ValType toValType(const MVT &Ty);
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} // end namespace WebAssembly
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} // end namespace llvm
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#endif
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