mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-04 22:07:27 +00:00
c5d592d5d2
The upcoming ARM64 backend doesn't have section-relative relocations, so we give each section its own symbol to provide this functionality. Of course, it doesn't need to appear in the final executable, so linker-private is the best kind for this purpose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205081 91177308-0d34-0410-b5e6-96231b3b80d8
132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
//===-- MCAsmInfo.cpp - Asm Info -------------------------------------------==//
|
|
//
|
|
// 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/MC/MCAsmInfo.h"
|
|
#include "llvm/MC/MCContext.h"
|
|
#include "llvm/MC/MCExpr.h"
|
|
#include "llvm/MC/MCStreamer.h"
|
|
#include "llvm/Support/DataTypes.h"
|
|
#include "llvm/Support/Dwarf.h"
|
|
#include <cctype>
|
|
#include <cstring>
|
|
using namespace llvm;
|
|
|
|
MCAsmInfo::MCAsmInfo() {
|
|
PointerSize = 4;
|
|
CalleeSaveStackSlotSize = 4;
|
|
|
|
IsLittleEndian = true;
|
|
StackGrowsUp = false;
|
|
HasSubsectionsViaSymbols = false;
|
|
HasMachoZeroFillDirective = false;
|
|
HasMachoTBSSDirective = false;
|
|
HasStaticCtorDtorReferenceInStaticMode = false;
|
|
LinkerRequiresNonEmptyDwarfLines = false;
|
|
MaxInstLength = 4;
|
|
MinInstAlignment = 1;
|
|
DollarIsPC = false;
|
|
SeparatorString = ";";
|
|
CommentString = "#";
|
|
LabelSuffix = ":";
|
|
DebugLabelSuffix = ":";
|
|
PrivateGlobalPrefix = "L";
|
|
LinkerPrivateGlobalPrefix = "";
|
|
InlineAsmStart = "APP";
|
|
InlineAsmEnd = "NO_APP";
|
|
Code16Directive = ".code16";
|
|
Code32Directive = ".code32";
|
|
Code64Directive = ".code64";
|
|
AssemblerDialect = 0;
|
|
AllowAtInName = false;
|
|
UseDataRegionDirectives = false;
|
|
ZeroDirective = "\t.zero\t";
|
|
AsciiDirective = "\t.ascii\t";
|
|
AscizDirective = "\t.asciz\t";
|
|
Data8bitsDirective = "\t.byte\t";
|
|
Data16bitsDirective = "\t.short\t";
|
|
Data32bitsDirective = "\t.long\t";
|
|
Data64bitsDirective = "\t.quad\t";
|
|
SunStyleELFSectionSwitchSyntax = false;
|
|
UsesELFSectionDirectiveForBSS = false;
|
|
AlignmentIsInBytes = true;
|
|
TextAlignFillValue = 0;
|
|
GPRel64Directive = 0;
|
|
GPRel32Directive = 0;
|
|
GlobalDirective = "\t.globl\t";
|
|
HasSetDirective = true;
|
|
HasAggressiveSymbolFolding = true;
|
|
COMMDirectiveAlignmentIsInBytes = true;
|
|
LCOMMDirectiveAlignmentType = LCOMM::NoAlignment;
|
|
HasDotTypeDotSizeDirective = true;
|
|
HasSingleParameterDotFile = true;
|
|
HasIdentDirective = false;
|
|
HasNoDeadStrip = false;
|
|
WeakRefDirective = 0;
|
|
HasWeakDefDirective = false;
|
|
HasWeakDefCanBeHiddenDirective = false;
|
|
HasLinkOnceDirective = false;
|
|
HiddenVisibilityAttr = MCSA_Hidden;
|
|
HiddenDeclarationVisibilityAttr = MCSA_Hidden;
|
|
ProtectedVisibilityAttr = MCSA_Protected;
|
|
HasLEB128 = false;
|
|
SupportsDebugInformation = false;
|
|
ExceptionsType = ExceptionHandling::None;
|
|
DwarfUsesRelocationsAcrossSections = true;
|
|
DwarfFDESymbolsUseAbsDiff = false;
|
|
DwarfRegNumForCFI = false;
|
|
NeedsDwarfSectionOffsetDirective = false;
|
|
UseParensForSymbolVariant = false;
|
|
|
|
// FIXME: Clang's logic should be synced with the logic used to initialize
|
|
// this member and the two implementations should be merged.
|
|
// For reference:
|
|
// - Solaris always enables the integrated assembler by default
|
|
// - SparcELFMCAsmInfo and X86ELFMCAsmInfo are handling this case
|
|
// - Windows always enables the integrated assembler by default
|
|
// - MCAsmInfoCOFF is handling this case, should it be MCAsmInfoMicrosoft?
|
|
// - MachO targets always enables the integrated assembler by default
|
|
// - MCAsmInfoDarwin is handling this case
|
|
// - Generic_GCC toolchains enable the integrated assembler on a per
|
|
// architecture basis.
|
|
// - The target subclasses for AArch64, ARM, and X86 handle these cases
|
|
UseIntegratedAssembler = false;
|
|
|
|
CompressDebugSections = false;
|
|
}
|
|
|
|
MCAsmInfo::~MCAsmInfo() {
|
|
}
|
|
|
|
const MCExpr *
|
|
MCAsmInfo::getExprForPersonalitySymbol(const MCSymbol *Sym,
|
|
unsigned Encoding,
|
|
MCStreamer &Streamer) const {
|
|
return getExprForFDESymbol(Sym, Encoding, Streamer);
|
|
}
|
|
|
|
const MCExpr *
|
|
MCAsmInfo::getExprForFDESymbol(const MCSymbol *Sym,
|
|
unsigned Encoding,
|
|
MCStreamer &Streamer) const {
|
|
if (!(Encoding & dwarf::DW_EH_PE_pcrel))
|
|
return MCSymbolRefExpr::Create(Sym, Streamer.getContext());
|
|
|
|
MCContext &Context = Streamer.getContext();
|
|
const MCExpr *Res = MCSymbolRefExpr::Create(Sym, Context);
|
|
MCSymbol *PCSym = Context.CreateTempSymbol();
|
|
Streamer.EmitLabel(PCSym);
|
|
const MCExpr *PC = MCSymbolRefExpr::Create(PCSym, Context);
|
|
return MCBinaryExpr::CreateSub(Res, PC, Context);
|
|
}
|