mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 11:02:59 +02:00
ae65e281f3
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
//===- MCAsmInfoDarwin.cpp - Darwin 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 defines target asm properties related what form asm statements
|
|
// should take in general on Darwin-based targets
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCAsmInfoDarwin.h"
|
|
#include "llvm/BinaryFormat/MachO.h"
|
|
#include "llvm/MC/MCDirectives.h"
|
|
#include "llvm/MC/MCSectionMachO.h"
|
|
|
|
using namespace llvm;
|
|
|
|
bool MCAsmInfoDarwin::isSectionAtomizableBySymbols(
|
|
const MCSection &Section) const {
|
|
const MCSectionMachO &SMO = static_cast<const MCSectionMachO &>(Section);
|
|
|
|
// Sections holding 1 byte strings are atomized based on the data they
|
|
// contain.
|
|
// Sections holding 2 byte strings require symbols in order to be atomized.
|
|
// There is no dedicated section for 4 byte strings.
|
|
if (SMO.getType() == MachO::S_CSTRING_LITERALS)
|
|
return false;
|
|
|
|
if (SMO.getSegmentName() == "__DATA" && SMO.getSectionName() == "__cfstring")
|
|
return false;
|
|
|
|
if (SMO.getSegmentName() == "__DATA" &&
|
|
SMO.getSectionName() == "__objc_classrefs")
|
|
return false;
|
|
|
|
switch (SMO.getType()) {
|
|
default:
|
|
return true;
|
|
|
|
// These sections are atomized at the element boundaries without using
|
|
// symbols.
|
|
case MachO::S_4BYTE_LITERALS:
|
|
case MachO::S_8BYTE_LITERALS:
|
|
case MachO::S_16BYTE_LITERALS:
|
|
case MachO::S_LITERAL_POINTERS:
|
|
case MachO::S_NON_LAZY_SYMBOL_POINTERS:
|
|
case MachO::S_LAZY_SYMBOL_POINTERS:
|
|
case MachO::S_THREAD_LOCAL_VARIABLE_POINTERS:
|
|
case MachO::S_MOD_INIT_FUNC_POINTERS:
|
|
case MachO::S_MOD_TERM_FUNC_POINTERS:
|
|
case MachO::S_INTERPOSING:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
MCAsmInfoDarwin::MCAsmInfoDarwin() {
|
|
// Common settings for all Darwin targets.
|
|
// Syntax:
|
|
LinkerPrivateGlobalPrefix = "l";
|
|
HasSingleParameterDotFile = false;
|
|
HasSubsectionsViaSymbols = true;
|
|
|
|
AlignmentIsInBytes = false;
|
|
COMMDirectiveAlignmentIsInBytes = false;
|
|
LCOMMDirectiveAlignmentType = LCOMM::Log2Alignment;
|
|
InlineAsmStart = " InlineAsm Start";
|
|
InlineAsmEnd = " InlineAsm End";
|
|
|
|
// Directives:
|
|
HasWeakDefDirective = true;
|
|
HasWeakDefCanBeHiddenDirective = true;
|
|
WeakRefDirective = "\t.weak_reference ";
|
|
ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
|
|
HasMachoZeroFillDirective = true; // Uses .zerofill
|
|
HasMachoTBSSDirective = true; // Uses .tbss
|
|
|
|
// FIXME: Change this once MC is the system assembler.
|
|
HasAggressiveSymbolFolding = false;
|
|
|
|
HiddenVisibilityAttr = MCSA_PrivateExtern;
|
|
HiddenDeclarationVisibilityAttr = MCSA_Invalid;
|
|
|
|
// Doesn't support protected visibility.
|
|
ProtectedVisibilityAttr = MCSA_Invalid;
|
|
|
|
HasDotTypeDotSizeDirective = false;
|
|
HasNoDeadStrip = true;
|
|
HasAltEntry = true;
|
|
|
|
DwarfUsesRelocationsAcrossSections = false;
|
|
|
|
UseIntegratedAssembler = true;
|
|
SetDirectiveSuppressesReloc = true;
|
|
}
|