MC CFG: Remap enough for the inserted instruction.

[oota-llvm.git] / lib / MC / MCAsmInfo.cpp

diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp
index c15d61494ca9e31c2c05fd56e335df4f9bb65cc5..84e4075621beac2d51af2faacf9611d825bf9f55 100644 (file)
--- a/lib/MC/MCAsmInfo.cpp
+++ b/lib/MC/MCAsmInfo.cpp
@@ -13,30 +13,48 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/MC/MCAsmInfo.h"
-#include "llvm/System/DataTypes.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(bool isLittleEndian) {
-  IsLittleEndian = isLittleEndian;
+MCAsmInfo::MCAsmInfo() {
+  PointerSize = 4;
+  CalleeSaveStackSlotSize = 4;
+
+  IsLittleEndian = true;
+  StackGrowsUp = false;
+  HasSubsectionsViaSymbols = false;
   HasMachoZeroFillDirective = false;
+  HasMachoTBSSDirective = false;
   HasStaticCtorDtorReferenceInStaticMode = false;
-  NonexecutableStackDirective = 0;
-  NeedsSet = false;
+  LinkerRequiresNonEmptyDwarfLines = false;
   MaxInstLength = 4;
+  MinInstAlignment = 1;
   PCSymbol = "$";
-  SeparatorChar = ';';
-  CommentColumn = 60;
+  SeparatorString = ";";
+  CommentColumn = 40;
   CommentString = "#";
+  LabelSuffix = ":";
+  DebugLabelSuffix = ":";
   GlobalPrefix = "";
   PrivateGlobalPrefix = ".";
   LinkerPrivateGlobalPrefix = "";
   InlineAsmStart = "APP";
   InlineAsmEnd = "NO_APP";
+  Code16Directive = ".code16";
+  Code32Directive = ".code32";
+  Code64Directive = ".code64";
   AssemblerDialect = 0;
   AllowQuotesInName = false;
   AllowNameToStartWithDigit = false;
+  AllowPeriodsInName = true;
+  AllowUTF8 = true;
+  UseDataRegionDirectives = false;
   ZeroDirective = "\t.zero\t";
   AsciiDirective = "\t.ascii\t";
   AscizDirective = "\t.asciz\t";
@@ -49,43 +67,38 @@ MCAsmInfo::MCAsmInfo(bool isLittleEndian) {
   AlignDirective = "\t.align\t";
   AlignmentIsInBytes = true;
   TextAlignFillValue = 0;
-  JumpTableDirective = 0;
-  PICJumpTableDirective = 0;
+  GPRel64Directive = 0;
+  GPRel32Directive = 0;
   GlobalDirective = "\t.globl\t";
-  SetDirective = 0;
-  LCOMMDirective = 0;
-  COMMDirective = "\t.comm\t";
-  COMMDirectiveTakesAlignment = true;
+  HasSetDirective = true;
+  HasAggressiveSymbolFolding = true;
+  COMMDirectiveAlignmentIsInBytes = true;
+  LCOMMDirectiveAlignmentType = LCOMM::NoAlignment;
   HasDotTypeDotSizeDirective = true;
   HasSingleParameterDotFile = true;
-  UsedDirective = 0;
+  HasNoDeadStrip = false;
+  HasSymbolResolver = false;
   WeakRefDirective = 0;
   WeakDefDirective = 0;
   LinkOnceDirective = 0;
-  // FIXME: These are ELFish - move to ELFMAI.
-  HiddenDirective = "\t.hidden\t";
-  ProtectedDirective = "\t.protected\t";
-  AbsoluteDebugSectionOffsets = false;
-  AbsoluteEHSectionOffsets = false;
+  HiddenVisibilityAttr = MCSA_Hidden;
+  HiddenDeclarationVisibilityAttr = MCSA_Hidden;
+  ProtectedVisibilityAttr = MCSA_Protected;
   HasLEB128 = false;
-  HasDotLocAndDotFile = false;
   SupportsDebugInformation = false;
   ExceptionsType = ExceptionHandling::None;
-  DwarfRequiresFrameSection = true;
   DwarfUsesInlineInfoSection = false;
-  Is_EHSymbolPrivate = true;
-  GlobalEHDirective = 0;
-  SupportsWeakOmittedEHFrame = true;
-  DwarfSectionOffsetDirective = 0;
-
-  AsmTransCBE = 0;
+  DwarfUsesRelocationsAcrossSections = true;
+  DwarfRegNumForCFI = false;
+  HasMicrosoftFastStdCallMangling = false;
+  NeedsDwarfSectionOffsetDirective = false;
 }
 
 MCAsmInfo::~MCAsmInfo() {
 }
 
 
-unsigned MCAsmInfo::getULEB128Size(unsigned Value) {
+unsigned MCAsmInfo::getULEB128Size(uint64_t Value) {
   unsigned Size = 0;
   do {
     Value >>= 7;
@@ -94,7 +107,7 @@ unsigned MCAsmInfo::getULEB128Size(unsigned Value) {
   return Size;
 }
 
-unsigned MCAsmInfo::getSLEB128Size(int Value) {
+unsigned MCAsmInfo::getSLEB128Size(int64_t Value) {
   unsigned Size = 0;
   int Sign = Value >> (8 * sizeof(Value) - 1);
   bool IsMore;
@@ -107,3 +120,25 @@ unsigned MCAsmInfo::getSLEB128Size(int Value) {
   } 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);
+}