lib/Target/PowerPC/PPCTargetAsmInfo.cpp

   1 //===-- PPCTargetAsmInfo.cpp - PPC asm properties ---------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the declarations of the DarwinTargetAsmInfo properties.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "PPCTargetAsmInfo.h"
  15 #include "PPCTargetMachine.h"
  16 #include "llvm/Function.h"
  17 #include "llvm/Support/Dwarf.h"
  18
  19 using namespace llvm;
  20 using namespace llvm::dwarf;
  21
  22 PPCDarwinTargetAsmInfo::PPCDarwinTargetAsmInfo(const PPCTargetMachine &TM) :
  23   PPCTargetAsmInfo<DarwinTargetAsmInfo>(TM) {
  24   PCSymbol = ".";
  25   CommentString = ";";
  26   UsedDirective = "\t.no_dead_strip\t";
  27   SupportsExceptionHandling = true;
  28
  29   DwarfEHFrameSection =
  30    ".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
  31   DwarfExceptionSection = ".section __DATA,__gcc_except_tab";
  32   GlobalEHDirective = "\t.globl\t";
  33   SupportsWeakOmittedEHFrame = false;
  34 }
  35
  36 const char *PPCDarwinTargetAsmInfo::getEHGlobalPrefix() const {
  37   const PPCSubtarget* Subtarget = &TM.getSubtarget<PPCSubtarget>();
  38   if (Subtarget->getDarwinVers() > 9)
  39     return PrivateGlobalPrefix;
  40   return "";
  41 }
  42
  43 PPCLinuxTargetAsmInfo::PPCLinuxTargetAsmInfo(const PPCTargetMachine &TM) :
  44   PPCTargetAsmInfo<ELFTargetAsmInfo>(TM) {
  45   CommentString = "#";
  46   GlobalPrefix = "";
  47   PrivateGlobalPrefix = ".L";
  48   StaticCtorsSection = ".section\t.ctors,\"aw\",@progbits";
  49   StaticDtorsSection = ".section\t.dtors,\"aw\",@progbits";
  50   UsedDirective = "\t# .no_dead_strip\t";
  51   WeakRefDirective = "\t.weak\t";
  52
  53   // Debug Information
  54   AbsoluteDebugSectionOffsets = true;
  55   SupportsDebugInformation = true;
  56   DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"\",@progbits";
  57   DwarfInfoSection =    "\t.section\t.debug_info,\"\",@progbits";
  58   DwarfLineSection =    "\t.section\t.debug_line,\"\",@progbits";
  59   DwarfFrameSection =   "\t.section\t.debug_frame,\"\",@progbits";
  60   DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"\",@progbits";
  61   DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"\",@progbits";
  62   DwarfStrSection =     "\t.section\t.debug_str,\"\",@progbits";
  63   DwarfLocSection =     "\t.section\t.debug_loc,\"\",@progbits";
  64   DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
  65   DwarfRangesSection =  "\t.section\t.debug_ranges,\"\",@progbits";
  66   DwarfMacroInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
  67
  68   PCSymbol = ".";
  69
  70   // Set up DWARF directives
  71   HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
  72
  73   // Exceptions handling
  74   if (!TM.getSubtargetImpl()->isPPC64())
  75     SupportsExceptionHandling = true;
  76   AbsoluteEHSectionOffsets = false;
  77   DwarfEHFrameSection = "\t.section\t.eh_frame,\"aw\",@progbits";
  78   DwarfExceptionSection = "\t.section\t.gcc_except_table,\"a\",@progbits";
  79 }
  80
  81
  82 // Instantiate default implementation.
  83 TEMPLATE_INSTANTIATION(class PPCTargetAsmInfo<TargetAsmInfo>);