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() :
22 TextSection("\t.text"),
23 DataSection("\t.data"),
25 TLSDataSection("\t.section .tdata,\"awT\",@progbits"),
26 TLSBSSSection("\t.section .tbss,\"awT\",@nobits"),
34 PrivateGlobalPrefix("."),
35 JumpTableSpecialLabelPrefix(0),
36 GlobalVarAddrPrefix(""),
37 GlobalVarAddrSuffix(""),
38 FunctionAddrPrefix(""),
39 FunctionAddrSuffix(""),
40 PersonalityPrefix(""),
41 PersonalitySuffix(""),
42 NeedsIndirectEncoding(false),
43 InlineAsmStart("#APP"),
44 InlineAsmEnd("#NO_APP"),
46 ZeroDirective("\t.zero\t"),
47 ZeroDirectiveSuffix(0),
48 AsciiDirective("\t.ascii\t"),
49 AscizDirective("\t.asciz\t"),
50 Data8bitsDirective("\t.byte\t"),
51 Data16bitsDirective("\t.short\t"),
52 Data32bitsDirective("\t.long\t"),
53 Data64bitsDirective("\t.quad\t"),
54 AlignDirective("\t.align\t"),
55 AlignmentIsInBytes(true),
56 SwitchToSectionDirective("\t.section\t"),
57 TextSectionStartSuffix(""),
58 DataSectionStartSuffix(""),
59 SectionEndDirectiveSuffix(0),
60 ConstantPoolSection("\t.section .rodata"),
61 JumpTableDataSection("\t.section .rodata"),
62 JumpTableDirective(0),
64 StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
65 StaticDtorsSection("\t.section .dtors,\"aw\",@progbits"),
66 FourByteConstantSection(0),
67 EightByteConstantSection(0),
68 SixteenByteConstantSection(0),
73 COMMDirective("\t.comm\t"),
74 COMMDirectiveTakesAlignment(true),
75 HasDotTypeDotSizeDirective(true),
78 HiddenDirective("\t.hidden\t"),
79 ProtectedDirective("\t.protected\t"),
80 AbsoluteDebugSectionOffsets(false),
81 AbsoluteEHSectionOffsets(false),
83 HasDotLocAndDotFile(false),
84 SupportsDebugInformation(false),
85 SupportsExceptionHandling(false),
86 DwarfRequiresFrameSection(true),
87 DwarfSectionOffsetDirective(0),
88 DwarfAbbrevSection(".debug_abbrev"),
89 DwarfInfoSection(".debug_info"),
90 DwarfLineSection(".debug_line"),
91 DwarfFrameSection(".debug_frame"),
92 DwarfPubNamesSection(".debug_pubnames"),
93 DwarfPubTypesSection(".debug_pubtypes"),
94 DwarfStrSection(".debug_str"),
95 DwarfLocSection(".debug_loc"),
96 DwarfARangesSection(".debug_aranges"),
97 DwarfRangesSection(".debug_ranges"),
98 DwarfMacInfoSection(".debug_macinfo"),
99 DwarfEHFrameSection(".eh_frame"),
100 DwarfExceptionSection(".gcc_except_table"),
104 TargetAsmInfo::~TargetAsmInfo() {
107 /// Measure the specified inline asm to determine an approximation of its
109 /// Comments (which run till the next SeparatorChar or newline) do not
110 /// count as an instruction.
111 /// Any other non-whitespace text is considered an instruction, with
112 /// multiple instructions separated by SeparatorChar or newlines.
113 /// Variable-length instructions are not handled here; this function
114 /// may be overloaded in the target code to do that.
115 unsigned TargetAsmInfo::getInlineAsmLength(const char *Str) const {
116 // Count the number of instructions in the asm.
117 bool atInsnStart = true;
119 for (; *Str; ++Str) {
120 if (*Str == '\n' || *Str == SeparatorChar)
122 if (atInsnStart && !isspace(*Str)) {
123 Length += MaxInstLength;
126 if (atInsnStart && strncmp(Str, CommentString, strlen(CommentString))==0)