llvm/lib/MC/MCAsmInfoELF.cpp
Dan Gohman 2389b80cea [WebAssembly] Don't create a needless .note.GNU-stack section
WebAssembly's stack will never be executable by default, so it isn't
necessary to declare .note.GNU-stack sections to request a non-executable
stack.

Differential Revision: http://reviews.llvm.org/D15969


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257962 91177308-0d34-0410-b5e6-96231b3b80d8
2016-01-15 23:59:13 +00:00

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//===-- MCAsmInfoELF.cpp - ELF asm properties -------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines target asm properties related what form asm statements
// should take in general on ELF-based targets
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCAsmInfoELF.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/Support/ELF.h"
using namespace llvm;
void MCAsmInfoELF::anchor() { }
MCSection *MCAsmInfoELF::getNonexecutableStackSection(MCContext &Ctx) const {
if (!UsesNonexecutableStackSection)
return nullptr;
return Ctx.getELFSection(".note.GNU-stack", ELF::SHT_PROGBITS, 0);
}
MCAsmInfoELF::MCAsmInfoELF() {
HasIdentDirective = true;
WeakRefDirective = "\t.weak\t";
PrivateGlobalPrefix = ".L";
PrivateLabelPrefix = ".L";
UsesNonexecutableStackSection = true;
}