1 //===-- TargetAsmInfo.cpp - Asm Info ---------------------------------------==//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by James M. Laskey and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines target asm properties related what form asm statements
13 //===----------------------------------------------------------------------===//
15 #include "llvm/Target/TargetAsmInfo.h"
21 TargetAsmInfo::TargetAsmInfo() :
25 TLSDataSection("\t.section .tdata,\"awT\",@progbits"),
26 TLSBSSSection("\t.section .tbss,\"awT\",@nobits"),
35 PrivateGlobalPrefix("."),
36 JumpTableSpecialLabelPrefix(0),
37 GlobalVarAddrPrefix(""),
38 GlobalVarAddrSuffix(""),
39 FunctionAddrPrefix(""),
40 FunctionAddrSuffix(""),
41 InlineAsmStart("#APP"),
42 InlineAsmEnd("#NO_APP"),
44 ZeroDirective("\t.zero\t"),
45 ZeroDirectiveSuffix(0),
46 AsciiDirective("\t.ascii\t"),
47 AscizDirective("\t.asciz\t"),
48 Data8bitsDirective("\t.byte\t"),
49 Data16bitsDirective("\t.short\t"),
50 Data32bitsDirective("\t.long\t"),
51 Data64bitsDirective("\t.quad\t"),
52 AlignDirective("\t.align\t"),
53 AlignmentIsInBytes(true),
54 SwitchToSectionDirective("\t.section\t"),
55 TextSectionStartSuffix(""),
56 DataSectionStartSuffix(""),
57 SectionEndDirectiveSuffix(0),
58 ConstantPoolSection("\t.section .rodata\n"),
59 JumpTableDataSection("\t.section .rodata\n"),
60 JumpTableDirective(0),
62 StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
63 StaticDtorsSection("\t.section .dtors,\"aw\",@progbits"),
64 FourByteConstantSection(0),
65 EightByteConstantSection(0),
66 SixteenByteConstantSection(0),
71 COMMDirective("\t.comm\t"),
72 COMMDirectiveTakesAlignment(true),
73 HasDotTypeDotSizeDirective(true),
76 HiddenDirective("\t.hidden\t"),
77 AbsoluteSectionOffsets(false),
81 SupportsExceptionHandling(false),
82 DwarfRequiresFrameSection(true),
83 DwarfSectionOffsetDirective(0),
84 DwarfAbbrevSection(".debug_abbrev"),
85 DwarfInfoSection(".debug_info"),
86 DwarfLineSection(".debug_line"),
87 DwarfFrameSection(".debug_frame"),
88 DwarfPubNamesSection(".debug_pubnames"),
89 DwarfPubTypesSection(".debug_pubtypes"),
90 DwarfStrSection(".debug_str"),
91 DwarfLocSection(".debug_loc"),
92 DwarfARangesSection(".debug_aranges"),
93 DwarfRangesSection(".debug_ranges"),
94 DwarfMacInfoSection(".debug_macinfo"),
95 DwarfEHFrameSection(".eh_frame"),
96 DwarfExceptionSection(".gcc_except_table"),
100 TargetAsmInfo::~TargetAsmInfo() {
103 /// Measure the specified inline asm to determine an approximation of its
105 /// Comments (which run till the next SeparatorChar or newline) do not
106 /// count as an instruction.
107 /// Any other non-whitespace text is considered an instruction, with
108 /// multiple instructions separated by SeparatorChar or newlines.
109 /// Variable-length instructions are not handled here; this function
110 /// may be overloaded in the target code to do that.
111 unsigned TargetAsmInfo::getInlineAsmLength(const char *Str) const {
112 // Count the number of instructions in the asm.
113 bool atInsnStart = true;
115 for (; *Str; ++Str) {
116 if (*Str == '\n' || *Str == SeparatorChar)
118 if (atInsnStart && !isspace(*Str)) {
119 Length += MaxInstLength;
122 if (atInsnStart && strncmp(Str, CommentString, strlen(CommentString))==0)