mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-08 04:07:07 +00:00
6c2cf8b1fb
needed to emit a 64-bit gp-relative relocation entry. Make changes necessary for emitting jump tables which have entries with directive .gpdword. This patch does not implement the parts needed for direct object emission or JIT. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149668 91177308-0d34-0410-b5e6-96231b3b80d8
149 lines
4.3 KiB
C++
149 lines
4.3 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;
|
|
IsLittleEndian = true;
|
|
StackGrowsUp = false;
|
|
HasSubsectionsViaSymbols = false;
|
|
HasMachoZeroFillDirective = false;
|
|
HasMachoTBSSDirective = false;
|
|
HasStaticCtorDtorReferenceInStaticMode = false;
|
|
LinkerRequiresNonEmptyDwarfLines = false;
|
|
MaxInstLength = 4;
|
|
PCSymbol = "$";
|
|
SeparatorString = ";";
|
|
CommentColumn = 40;
|
|
CommentString = "#";
|
|
LabelSuffix = ":";
|
|
GlobalPrefix = "";
|
|
PrivateGlobalPrefix = ".";
|
|
LinkerPrivateGlobalPrefix = "";
|
|
InlineAsmStart = "APP";
|
|
InlineAsmEnd = "NO_APP";
|
|
Code16Directive = ".code16";
|
|
Code32Directive = ".code32";
|
|
Code64Directive = ".code64";
|
|
AssemblerDialect = 0;
|
|
AllowQuotesInName = false;
|
|
AllowNameToStartWithDigit = false;
|
|
AllowPeriodsInName = true;
|
|
ZeroDirective = "\t.zero\t";
|
|
AsciiDirective = "\t.ascii\t";
|
|
AscizDirective = "\t.asciz\t";
|
|
Data8bitsDirective = "\t.byte\t";
|
|
Data16bitsDirective = "\t.short\t";
|
|
Data32bitsDirective = "\t.long\t";
|
|
Data64bitsDirective = "\t.quad\t";
|
|
DataBegin = "$d.";
|
|
CodeBegin = "$a.";
|
|
JT8Begin = "$d.";
|
|
JT16Begin = "$d.";
|
|
JT32Begin = "$d.";
|
|
SupportsDataRegions = false;
|
|
SunStyleELFSectionSwitchSyntax = false;
|
|
UsesELFSectionDirectiveForBSS = false;
|
|
AlignDirective = "\t.align\t";
|
|
AlignmentIsInBytes = true;
|
|
TextAlignFillValue = 0;
|
|
GPRel64Directive = 0;
|
|
GPRel32Directive = 0;
|
|
GlobalDirective = "\t.globl\t";
|
|
HasSetDirective = true;
|
|
HasAggressiveSymbolFolding = true;
|
|
LCOMMDirectiveType = LCOMM::None;
|
|
COMMDirectiveAlignmentIsInBytes = true;
|
|
HasDotTypeDotSizeDirective = true;
|
|
HasSingleParameterDotFile = true;
|
|
HasNoDeadStrip = false;
|
|
HasSymbolResolver = false;
|
|
WeakRefDirective = 0;
|
|
WeakDefDirective = 0;
|
|
LinkOnceDirective = 0;
|
|
HiddenVisibilityAttr = MCSA_Hidden;
|
|
HiddenDeclarationVisibilityAttr = MCSA_Hidden;
|
|
ProtectedVisibilityAttr = MCSA_Protected;
|
|
HasLEB128 = false;
|
|
SupportsDebugInformation = false;
|
|
ExceptionsType = ExceptionHandling::None;
|
|
DwarfUsesInlineInfoSection = false;
|
|
DwarfRequiresRelocationForSectionOffset = true;
|
|
DwarfSectionOffsetDirective = 0;
|
|
DwarfUsesLabelOffsetForRanges = true;
|
|
DwarfUsesRelocationsForStringPool = true;
|
|
DwarfRegNumForCFI = false;
|
|
HasMicrosoftFastStdCallMangling = false;
|
|
|
|
AsmTransCBE = 0;
|
|
}
|
|
|
|
MCAsmInfo::~MCAsmInfo() {
|
|
}
|
|
|
|
|
|
unsigned MCAsmInfo::getULEB128Size(unsigned Value) {
|
|
unsigned Size = 0;
|
|
do {
|
|
Value >>= 7;
|
|
Size += sizeof(int8_t);
|
|
} while (Value);
|
|
return Size;
|
|
}
|
|
|
|
unsigned MCAsmInfo::getSLEB128Size(int Value) {
|
|
unsigned Size = 0;
|
|
int Sign = Value >> (8 * sizeof(Value) - 1);
|
|
bool IsMore;
|
|
|
|
do {
|
|
unsigned Byte = Value & 0x7f;
|
|
Value >>= 7;
|
|
IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
|
|
Size += sizeof(int8_t);
|
|
} while (IsMore);
|
|
return Size;
|
|
}
|
|
|
|
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);
|
|
}
|