LanaiMCAsmInfo.cpp

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//===-- LanaiMCAsmInfo.cpp - Lanai 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
//
//===----------------------------------------------------------------------===//
//
// This file contains the declarations of the LanaiMCAsmInfo properties.
//
//===----------------------------------------------------------------------===//
 
#include "LanaiMCAsmInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/Triple.h"
 
using namespace llvm;
 
void LanaiMCAsmInfo::anchor() {}
 
LanaiMCAsmInfo::LanaiMCAsmInfo(const Triple & /*TheTriple*/,
                               const MCTargetOptions &Options)
    : MCAsmInfoELF(Options) {
  IsLittleEndian = false;
  InternalSymbolPrefix = ".L";
  WeakRefDirective = "\t.weak\t";
  ExceptionsType = ExceptionHandling::DwarfCFI;
 
  // Lanai assembly requires ".section" before ".bss"
  UsesELFSectionDirectiveForBSS = true;
 
  // Use '!' as comment string to correspond with old toolchain.
  CommentString = "!";
 
  // Target supports emission of debugging information.
  SupportsDebugInformation = true;
 
  // Set the instruction alignment. Currently used only for address adjustment
  // in dwarf generation.
  MinInstAlignment = 4;
}
 
void LanaiMCAsmInfo::printSpecifierExpr(raw_ostream &OS,
                                        const MCSpecifierExpr &Expr) const {
  if (Expr.getSpecifier() == 0) {
    printExpr(OS, *Expr.getSubExpr());
    return;
  }
 
  switch (Expr.getSpecifier()) {
  default:
    llvm_unreachable("Invalid kind!");
  case Lanai::S_ABS_HI:
    OS << "hi";
    break;
  case Lanai::S_ABS_LO:
    OS << "lo";
    break;
  }
 
  OS << '(';
  printExpr(OS, *Expr.getSubExpr());
  OS << ')';
}