MCStreamer.cpp revision 204961
1//===- lib/MC/MCStreamer.cpp - Streaming Machine Code Output --------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "llvm/MC/MCStreamer.h" 11#include "llvm/MC/MCExpr.h" 12#include "llvm/Support/raw_ostream.h" 13using namespace llvm; 14 15MCStreamer::MCStreamer(MCContext &_Context) : Context(_Context), CurSection(0) { 16} 17 18MCStreamer::~MCStreamer() { 19} 20 21raw_ostream &MCStreamer::GetCommentOS() { 22 // By default, discard comments. 23 return nulls(); 24} 25 26 27/// EmitIntValue - Special case of EmitValue that avoids the client having to 28/// pass in a MCExpr for constant integers. 29void MCStreamer::EmitIntValue(uint64_t Value, unsigned Size, 30 unsigned AddrSpace) { 31 EmitValue(MCConstantExpr::Create(Value, getContext()), Size, AddrSpace); 32} 33 34void MCStreamer::EmitSymbolValue(const MCSymbol *Sym, unsigned Size, 35 unsigned AddrSpace) { 36 EmitValue(MCSymbolRefExpr::Create(Sym, getContext()), Size, AddrSpace); 37} 38 39/// EmitFill - Emit NumBytes bytes worth of the value specified by 40/// FillValue. This implements directives such as '.space'. 41void MCStreamer::EmitFill(uint64_t NumBytes, uint8_t FillValue, 42 unsigned AddrSpace) { 43 const MCExpr *E = MCConstantExpr::Create(FillValue, getContext()); 44 for (uint64_t i = 0, e = NumBytes; i != e; ++i) 45 EmitValue(E, 1, AddrSpace); 46} 47