WebAssemblyMCAsmInfo.cpp

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//===-- WebAssemblyMCAsmInfo.cpp - WebAssembly asm properties -------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains the declarations of the WebAssemblyMCAsmInfo
/// properties.
///
//===----------------------------------------------------------------------===//
 
#include "WebAssemblyMCAsmInfo.h"
#include "WebAssemblyMCTargetDesc.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/TargetParser/Triple.h"
 
using namespace llvm;
 
#define DEBUG_TYPE "wasm-mc-asm-info"
 
const MCAsmInfo::AtSpecifier atSpecifiers[] = {
    {WebAssembly::S_TYPEINDEX, "TYPEINDEX"},
    {WebAssembly::S_TBREL, "TBREL"},
    {WebAssembly::S_MBREL, "MBREL"},
    {WebAssembly::S_TLSREL, "TLSREL"},
    {WebAssembly::S_GOT, "GOT"},
    {WebAssembly::S_GOT_TLS, "GOT@TLS"},
    {WebAssembly::S_FUNCINDEX, "FUNCINDEX"},
};
 
WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() = default; // anchor.
 
WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T,
                                           const MCTargetOptions &Options) {
  CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
 
  // TODO: What should MaxInstLength be?
 
  UseDataRegionDirectives = true;
 
  // Use .skip instead of .zero because .zero is confusing when used with two
  // arguments (it doesn't actually zero things out).
  ZeroDirective = "\t.skip\t";
 
  Data8bitsDirective = "\t.int8\t";
  Data16bitsDirective = "\t.int16\t";
  Data32bitsDirective = "\t.int32\t";
  Data64bitsDirective = "\t.int64\t";
 
  AlignmentIsInBytes = false;
  COMMDirectiveAlignmentIsInBytes = false;
  LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
 
  SupportsDebugInformation = true;
  ExceptionsType = ExceptionHandling::None;
 
  initializeAtSpecifiers(atSpecifiers);
}