1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
//===-- XCoreTargetAsmInfo.cpp - XCore asm properties -----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declarations of the XCoreTargetAsmInfo properties.
// We use the small section flag for the CP relative and DP relative
// flags. If a section is small and writable then it is DP relative. If a
// section is small and not writable then it is CP relative.
//
//===----------------------------------------------------------------------===//
#include "XCoreTargetAsmInfo.h"
#include "XCoreTargetMachine.h"
#include "llvm/GlobalVariable.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
XCoreTargetAsmInfo::XCoreTargetAsmInfo(const XCoreTargetMachine &TM)
: ELFTargetAsmInfo(TM),
Subtarget(TM.getSubtargetImpl()) {
SupportsDebugInformation = true;
TextSection = getUnnamedSection("\t.text", SectionFlags::Code);
DataSection = getNamedSection("\t.dp.data", SectionFlags::Writeable |
SectionFlags::Small);
BSSSection_ = getNamedSection("\t.dp.bss", SectionFlags::Writeable |
SectionFlags::BSS | SectionFlags::Small);
if (Subtarget->isXS1A()) {
ReadOnlySection = getNamedSection("\t.dp.rodata", SectionFlags::None |
SectionFlags::Writeable |
SectionFlags::Small);
} else {
ReadOnlySection = getNamedSection("\t.cp.rodata", SectionFlags::None |
SectionFlags::Small);
}
Data16bitsDirective = "\t.short\t";
Data32bitsDirective = "\t.long\t";
Data64bitsDirective = 0;
ZeroDirective = "\t.space\t";
CommentString = "#";
ConstantPoolSection = "\t.section\t.cp.rodata,\"ac\",@progbits";
JumpTableDataSection = "\t.section\t.dp.data,\"awd\",@progbits";
PrivateGlobalPrefix = ".L";
AscizDirective = ".asciiz";
WeakDefDirective = "\t.weak\t";
WeakRefDirective = "\t.weak\t";
SetDirective = "\t.set\t";
// Debug
HasLEB128 = true;
AbsoluteDebugSectionOffsets = true;
DwarfAbbrevSection = "\t.section\t.debug_abbrev,\"\",@progbits";
DwarfInfoSection = "\t.section\t.debug_info,\"\",@progbits";
DwarfLineSection = "\t.section\t.debug_line,\"\",@progbits";
DwarfFrameSection = "\t.section\t.debug_frame,\"\",@progbits";
DwarfPubNamesSection = "\t.section\t.debug_pubnames,\"\",@progbits";
DwarfPubTypesSection = "\t.section\t.debug_pubtypes,\"\",@progbits";
DwarfStrSection = "\t.section\t.debug_str,\"\",@progbits";
DwarfLocSection = "\t.section\t.debug_loc,\"\",@progbits";
DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
DwarfRangesSection = "\t.section\t.debug_ranges,\"\",@progbits";
DwarfMacroInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
}
const Section*
XCoreTargetAsmInfo::SelectSectionForGlobal(const GlobalValue *GV) const {
SectionKind::Kind Kind = SectionKindForGlobal(GV);
if (const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GV)) {
if (!GVar->isWeakForLinker()) {
switch (Kind) {
case SectionKind::RODataMergeConst:
return getReadOnlySection();
case SectionKind::ThreadData:
return DataSection;
case SectionKind::ThreadBSS:
return getBSSSection_();
default:
break;
}
}
}
return ELFTargetAsmInfo::SelectSectionForGlobal(GV);
}
const Section*
XCoreTargetAsmInfo::MergeableConstSection(const Type *Ty) const {
const TargetData *TD = TM.getTargetData();
unsigned Size = TD->getTypeAllocSize(Ty);
if (Size == 4 || Size == 8 || Size == 16) {
std::string Name = ".cp.const" + utostr(Size);
return getNamedSection(Name.c_str(),
SectionFlags::setEntitySize(SectionFlags::Mergeable |
SectionFlags::Small,
Size));
}
return getReadOnlySection();
}
unsigned XCoreTargetAsmInfo::
SectionFlagsForGlobal(const GlobalValue *GV, const char* Name) const {
unsigned Flags = ELFTargetAsmInfo::SectionFlagsForGlobal(GV, Name);
// Mask out unsupported flags
Flags &= ~(SectionFlags::Small | SectionFlags::TLS);
// Set CP / DP relative flags
if (GV) {
SectionKind::Kind Kind = SectionKindForGlobal(GV);
switch (Kind) {
case SectionKind::ThreadData:
case SectionKind::ThreadBSS:
case SectionKind::Data:
case SectionKind::BSS:
case SectionKind::SmallData:
case SectionKind::SmallBSS:
Flags |= SectionFlags::Small;
break;
case SectionKind::ROData:
case SectionKind::RODataMergeStr:
case SectionKind::SmallROData:
if (Subtarget->isXS1A()) {
Flags |= SectionFlags::Writeable;
}
Flags |=SectionFlags::Small;
break;
case SectionKind::RODataMergeConst:
Flags |=SectionFlags::Small;
default:
break;
}
}
return Flags;
}
|
