llvm-project/llvm/lib/MC/MCAsmInfo.cpp

102 lines
2.7 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/System/DataTypes.h"
#include <cctype>
#include <cstring>
using namespace llvm;
MCAsmInfo::MCAsmInfo() {
HasSubsectionsViaSymbols = false;
HasMachoZeroFillDirective = false;
HasStaticCtorDtorReferenceInStaticMode = false;
MaxInstLength = 4;
PCSymbol = "$";
SeparatorChar = ';';
CommentColumn = 40;
CommentString = "#";
GlobalPrefix = "";
PrivateGlobalPrefix = ".";
LinkerPrivateGlobalPrefix = "";
InlineAsmStart = "APP";
InlineAsmEnd = "NO_APP";
AssemblerDialect = 0;
AllowQuotesInName = false;
AllowNameToStartWithDigit = 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;
AlignDirective = "\t.align\t";
AlignmentIsInBytes = true;
TextAlignFillValue = 0;
GPRel32Directive = 0;
GlobalDirective = "\t.globl\t";
HasSetDirective = true;
HasLCOMMDirective = false;
COMMDirectiveAlignmentIsInBytes = true;
HasDotTypeDotSizeDirective = true;
HasSingleParameterDotFile = true;
HasNoDeadStrip = false;
WeakRefDirective = 0;
WeakDefDirective = 0;
LinkOnceDirective = 0;
HiddenVisibilityAttr = MCSA_Hidden;
ProtectedVisibilityAttr = MCSA_Protected;
AbsoluteDebugSectionOffsets = false;
AbsoluteEHSectionOffsets = false;
HasLEB128 = false;
HasDotLocAndDotFile = false;
SupportsDebugInformation = false;
ExceptionsType = ExceptionHandling::None;
DwarfRequiresFrameSection = true;
DwarfUsesInlineInfoSection = false;
DwarfSectionOffsetDirective = 0;
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;
}