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[oota-llvm.git] / lib / Target / TargetAsmInfo.cpp

diff --git a/lib/Target/TargetAsmInfo.cpp b/lib/Target/TargetAsmInfo.cpp
index 7ac395002ed9916be3f7b8942525ce7bebceacb4..216994502251bf3613d1297ee91668d76bdb6d46 100644 (file)
--- a/lib/Target/TargetAsmInfo.cpp
+++ b/lib/Target/TargetAsmInfo.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by James M. Laskey and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -13,17 +13,22 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Support/Dwarf.h"
+#include <cctype>
+#include <cstring>
 
 using namespace llvm;
 
 TargetAsmInfo::TargetAsmInfo() :
-  TextSection(".text"),
-  DataSection(".data"),
-  BSSSection(".bss"),
+  TextSection("\t.text"),
+  DataSection("\t.data"),
+  BSSSection("\t.bss"),
+  TLSDataSection("\t.section .tdata,\"awT\",@progbits"),
+  TLSBSSSection("\t.section .tbss,\"awT\",@nobits"),
   ZeroFillDirective(0),
-  AddressSize(4),
   NeedsSet(false),
   MaxInstLength(4),
+  PCSymbol("$"),
   SeparatorChar(';'),
   CommentString("#"),
   GlobalPrefix(""),
@@ -33,6 +38,9 @@ TargetAsmInfo::TargetAsmInfo() :
   GlobalVarAddrSuffix(""),
   FunctionAddrPrefix(""),
   FunctionAddrSuffix(""),
+  PersonalityPrefix(""),
+  PersonalitySuffix(""),
+  NeedsIndirectEncoding(false),
   InlineAsmStart("#APP"),
   InlineAsmEnd("#NO_APP"),
   AssemblerDialect(0),
@@ -46,12 +54,13 @@ TargetAsmInfo::TargetAsmInfo() :
   Data64bitsDirective("\t.quad\t"),
   AlignDirective("\t.align\t"),
   AlignmentIsInBytes(true),
+  TextAlignFillValue(0),
   SwitchToSectionDirective("\t.section\t"),
   TextSectionStartSuffix(""),
   DataSectionStartSuffix(""),
   SectionEndDirectiveSuffix(0),
-  ConstantPoolSection("\t.section .rodata\n"),
-  JumpTableDataSection("\t.section .rodata\n"),
+  ConstantPoolSection("\t.section .rodata"),
+  JumpTableDataSection("\t.section .rodata"),
   JumpTableDirective(0),
   CStringSection(0),
   StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
@@ -59,7 +68,8 @@ TargetAsmInfo::TargetAsmInfo() :
   FourByteConstantSection(0),
   EightByteConstantSection(0),
   SixteenByteConstantSection(0),
-  GlobalDirective(0),
+  ReadOnlySection(0),
+  GlobalDirective("\t.globl\t"),
   SetDirective(0),
   LCOMMDirective(0),
   COMMDirective("\t.comm\t"),
@@ -67,12 +77,20 @@ TargetAsmInfo::TargetAsmInfo() :
   HasDotTypeDotSizeDirective(true),
   UsedDirective(0),
   WeakRefDirective(0),
+  WeakDefDirective(0),
   HiddenDirective("\t.hidden\t"),
+  ProtectedDirective("\t.protected\t"),
+  AbsoluteDebugSectionOffsets(false),
+  AbsoluteEHSectionOffsets(false),
   HasLEB128(false),
-  HasDotLoc(false),
-  HasDotFile(false),
+  HasDotLocAndDotFile(false),
+  SupportsDebugInformation(false),
   SupportsExceptionHandling(false),
   DwarfRequiresFrameSection(true),
+  GlobalEHDirective(0),
+  SupportsWeakOmittedEHFrame(true),
+  ShortenEHDataOn64Bit(false),
+  DwarfSectionOffsetDirective(0),
   DwarfAbbrevSection(".debug_abbrev"),
   DwarfInfoSection(".debug_info"),
   DwarfLineSection(".debug_line"),
@@ -84,6 +102,8 @@ TargetAsmInfo::TargetAsmInfo() :
   DwarfARangesSection(".debug_aranges"),
   DwarfRangesSection(".debug_ranges"),
   DwarfMacInfoSection(".debug_macinfo"),
+  DwarfEHFrameSection(".eh_frame"),
+  DwarfExceptionSection(".gcc_except_table"),
   AsmTransCBE(0) {
 }
 
@@ -92,14 +112,32 @@ TargetAsmInfo::~TargetAsmInfo() {
 
 /// Measure the specified inline asm to determine an approximation of its
 /// length.
+/// Comments (which run till the next SeparatorChar or newline) do not
+/// count as an instruction.
+/// Any other non-whitespace text is considered an instruction, with
+/// multiple instructions separated by SeparatorChar or newlines.
+/// Variable-length instructions are not handled here; this function
+/// may be overloaded in the target code to do that.
 unsigned TargetAsmInfo::getInlineAsmLength(const char *Str) const {
   // Count the number of instructions in the asm.
-  unsigned NumInsts = 0;
+  bool atInsnStart = true;
+  unsigned Length = 0;
   for (; *Str; ++Str) {
     if (*Str == '\n' || *Str == SeparatorChar)
-      ++NumInsts;
+      atInsnStart = true;
+    if (atInsnStart && !isspace(*Str)) {
+      Length += MaxInstLength;
+      atInsnStart = false;
+    }
+    if (atInsnStart && strncmp(Str, CommentString, strlen(CommentString))==0)
+      atInsnStart = false;
   }
 
-  // Multiply by the worst-case length for each instruction.
-  return NumInsts * MaxInstLength;
+  return Length;
 }
+
+unsigned TargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
+                                              bool Global) const {
+  return dwarf::DW_EH_PE_absptr;
+}
+