lib/Target/X86/X86TargetAsmInfo.cpp

   1 //===-- X86TargetAsmInfo.cpp - X86 asm properties ---------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file was developed by James M. Laskey and is distributed under the
   6 // University of Illinois Open Source License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the declarations of the X86TargetAsmInfo properties.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "X86TargetAsmInfo.h"
  15 #include "X86TargetMachine.h"
  16 #include "X86Subtarget.h"
  17
  18 using namespace llvm;
  19
  20 X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
  21   const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
  22
  23   // FIXME - Should be simplified.
  24
  25   switch (Subtarget->TargetType) {
  26   case X86Subtarget::isDarwin:
  27     AlignmentIsInBytes = false;
  28     GlobalPrefix = "_";
  29     if (!Subtarget->is64Bit())
  30       Data64bitsDirective = 0;       // we can't emit a 64-bit unit
  31     ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
  32     PrivateGlobalPrefix = "L";     // Marker for constant pool idxs
  33     ConstantPoolSection = "\t.const\n";
  34     JumpTableDataSection = "\t.const\n";
  35     CStringSection = "\t.cstring";
  36     FourByteConstantSection = "\t.literal4\n";
  37     EightByteConstantSection = "\t.literal8\n";
  38     if (Subtarget->is64Bit())
  39       SixteenByteConstantSection = "\t.literal16\n";
  40     LCOMMDirective = "\t.lcomm\t";
  41     COMMDirectiveTakesAlignment = false;
  42     HasDotTypeDotSizeDirective = false;
  43     StaticCtorsSection = ".mod_init_func";
  44     StaticDtorsSection = ".mod_term_func";
  45     InlineAsmStart = "# InlineAsm Start";
  46     InlineAsmEnd = "# InlineAsm End";
  47     SetDirective = "\t.set";
  48     UsedDirective = "\t.no_dead_strip\t";
  49
  50     NeedsSet = true;
  51     DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
  52     DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
  53     DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
  54     DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
  55     DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
  56     DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
  57     DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
  58     DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
  59     DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
  60     DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
  61     DwarfMacInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
  62     break;
  63
  64   case X86Subtarget::isELF:
  65     // Set up DWARF directives
  66     HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
  67     // bool HasLEB128; // Defaults to false.
  68     // hasDotLoc - True if target asm supports .loc directives.
  69     // bool HasDotLoc; // Defaults to false.
  70     // HasDotFile - True if target asm supports .file directives.
  71     // bool HasDotFile; // Defaults to false.
  72     PrivateGlobalPrefix = ".";  // Prefix for private global symbols
  73     DwarfRequiresFrameSection = false;
  74     DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"\",@progbits";
  75     DwarfInfoSection =    "\t.section\t.debug_info,\"\",@progbits";
  76     DwarfLineSection =    "\t.section\t.debug_line,\"\",@progbits";
  77     DwarfFrameSection =   "\t.section\t.debug_frame,\"\",@progbits";
  78     DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"\",@progbits";
  79     DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"\",@progbits";
  80     DwarfStrSection =     "\t.section\t.debug_str,\"\",@progbits";
  81     DwarfLocSection =     "\t.section\t.debug_loc,\"\",@progbits";
  82     DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
  83     DwarfRangesSection =  "\t.section\t.debug_ranges,\"\",@progbits";
  84     DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
  85     break;
  86
  87   case X86Subtarget::isCygwin:
  88     GlobalPrefix = "_";
  89     COMMDirectiveTakesAlignment = false;
  90     HasDotTypeDotSizeDirective = false;
  91     StaticCtorsSection = "\t.section .ctors,\"aw\"";
  92     StaticDtorsSection = "\t.section .dtors,\"aw\"";
  93     break;
  94   case X86Subtarget::isWindows:
  95     GlobalPrefix = "_";
  96     HasDotTypeDotSizeDirective = false;
  97     break;
  98   default: break;
  99   }
 100
 101   if (Subtarget->isFlavorIntel()) {
 102     GlobalPrefix = "_";
 103     CommentString = ";";
 104
 105     PrivateGlobalPrefix = "$";
 106     AlignDirective = "\talign\t";
 107     ZeroDirective = "\tdb\t";
 108     ZeroDirectiveSuffix = " dup(0)";
 109     AsciiDirective = "\tdb\t";
 110     AscizDirective = 0;
 111     Data8bitsDirective = "\tdb\t";
 112     Data16bitsDirective = "\tdw\t";
 113     Data32bitsDirective = "\tdd\t";
 114     Data64bitsDirective = "\tdq\t";
 115     HasDotTypeDotSizeDirective = false;
 116
 117     TextSection = "_text";
 118     DataSection = "_data";
 119     SwitchToSectionDirective = "";
 120     TextSectionStartSuffix = "\tsegment 'CODE'";
 121     DataSectionStartSuffix = "\tsegment 'DATA'";
 122     SectionEndDirectiveSuffix = "\tends\n";
 123   }
 124 }
 125