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 static const char* x86_asm_table[] = {"{si}", "S",
  21                                       "{di}", "D",
  22                                       "{ax}", "a",
  23                                       "{cx}", "c",
  24                                       "{memory}", "memory",
  25                                       "{flags}", "",
  26                                       "{dirflag}", "",
  27                                       "{fpsr}", "",
  28                                       "{cc}", "cc",
  29                                       0,0};
  30
  31 X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
  32   const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
  33
  34   // FIXME - Should be simplified.
  35
  36   AsmTransCBE = x86_asm_table;
  37
  38   switch (Subtarget->TargetType) {
  39   case X86Subtarget::isDarwin:
  40     AlignmentIsInBytes = false;
  41     GlobalPrefix = "_";
  42     if (!Subtarget->is64Bit())
  43       Data64bitsDirective = 0;       // we can't emit a 64-bit unit
  44     ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
  45     PrivateGlobalPrefix = "L";     // Marker for constant pool idxs
  46     ConstantPoolSection = "\t.const\n";
  47     JumpTableDataSection = "\t.const\n";
  48     CStringSection = "\t.cstring";
  49     FourByteConstantSection = "\t.literal4\n";
  50     EightByteConstantSection = "\t.literal8\n";
  51     if (Subtarget->is64Bit())
  52       SixteenByteConstantSection = "\t.literal16\n";
  53     LCOMMDirective = "\t.lcomm\t";
  54     COMMDirectiveTakesAlignment = false;
  55     HasDotTypeDotSizeDirective = false;
  56     StaticCtorsSection = ".mod_init_func";
  57     StaticDtorsSection = ".mod_term_func";
  58     InlineAsmStart = "# InlineAsm Start";
  59     InlineAsmEnd = "# InlineAsm End";
  60     SetDirective = "\t.set";
  61     UsedDirective = "\t.no_dead_strip\t";
  62
  63     NeedsSet = true;
  64     DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
  65     DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
  66     DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
  67     DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
  68     DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
  69     DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
  70     DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
  71     DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
  72     DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
  73     DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
  74     DwarfMacInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
  75     break;
  76
  77   case X86Subtarget::isELF:
  78     // Set up DWARF directives
  79     HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
  80     // bool HasLEB128; // Defaults to false.
  81     // hasDotLoc - True if target asm supports .loc directives.
  82     // bool HasDotLoc; // Defaults to false.
  83     // HasDotFile - True if target asm supports .file directives.
  84     // bool HasDotFile; // Defaults to false.
  85     PrivateGlobalPrefix = ".";  // Prefix for private global symbols
  86     DwarfRequiresFrameSection = false;
  87     DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"\",@progbits";
  88     DwarfInfoSection =    "\t.section\t.debug_info,\"\",@progbits";
  89     DwarfLineSection =    "\t.section\t.debug_line,\"\",@progbits";
  90     DwarfFrameSection =   "\t.section\t.debug_frame,\"\",@progbits";
  91     DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"\",@progbits";
  92     DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"\",@progbits";
  93     DwarfStrSection =     "\t.section\t.debug_str,\"\",@progbits";
  94     DwarfLocSection =     "\t.section\t.debug_loc,\"\",@progbits";
  95     DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
  96     DwarfRangesSection =  "\t.section\t.debug_ranges,\"\",@progbits";
  97     DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
  98     break;
  99
 100   case X86Subtarget::isCygwin:
 101     GlobalPrefix = "_";
 102     COMMDirectiveTakesAlignment = false;
 103     HasDotTypeDotSizeDirective = false;
 104     StaticCtorsSection = "\t.section .ctors,\"aw\"";
 105     StaticDtorsSection = "\t.section .dtors,\"aw\"";
 106
 107     // Set up DWARF directives
 108     HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
 109     PrivateGlobalPrefix = "L";  // Prefix for private global symbols
 110     DwarfRequiresFrameSection = false;
 111     DwarfAbbrevSection =  "\t.section\t.debug_abbrev,\"dr\"";
 112     DwarfInfoSection =    "\t.section\t.debug_info,\"dr\"";
 113     DwarfLineSection =    "\t.section\t.debug_line,\"dr\"";
 114     DwarfFrameSection =   "\t.section\t.debug_frame,\"dr\"";
 115     DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"dr\"";
 116     DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"dr\"";
 117     DwarfStrSection =     "\t.section\t.debug_str,\"dr\"";
 118     DwarfLocSection =     "\t.section\t.debug_loc,\"dr\"";
 119     DwarfARangesSection = "\t.section\t.debug_aranges,\"dr\"";
 120     DwarfRangesSection =  "\t.section\t.debug_ranges,\"dr\"";
 121     DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"dr\"";
 122     break;
 123
 124     break;
 125   case X86Subtarget::isWindows:
 126     GlobalPrefix = "_";
 127     HasDotTypeDotSizeDirective = false;
 128     break;
 129   default: break;
 130   }
 131
 132   if (Subtarget->isFlavorIntel()) {
 133     GlobalPrefix = "_";
 134     CommentString = ";";
 135
 136     PrivateGlobalPrefix = "$";
 137     AlignDirective = "\talign\t";
 138     ZeroDirective = "\tdb\t";
 139     ZeroDirectiveSuffix = " dup(0)";
 140     AsciiDirective = "\tdb\t";
 141     AscizDirective = 0;
 142     Data8bitsDirective = "\tdb\t";
 143     Data16bitsDirective = "\tdw\t";
 144     Data32bitsDirective = "\tdd\t";
 145     Data64bitsDirective = "\tdq\t";
 146     HasDotTypeDotSizeDirective = false;
 147
 148     TextSection = "_text";
 149     DataSection = "_data";
 150     SwitchToSectionDirective = "";
 151     TextSectionStartSuffix = "\tsegment 'CODE'";
 152     DataSectionStartSuffix = "\tsegment 'DATA'";
 153     SectionEndDirectiveSuffix = "\tends\n";
 154   }
 155 }
 156