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
|
//===- RandomAccessTypeVisitor.cpp ---------------------------- *- C++ --*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/RandomAccessTypeVisitor.h"
#include "llvm/DebugInfo/CodeView/CVTypeVisitor.h"
#include "llvm/DebugInfo/CodeView/TypeDatabase.h"
#include "llvm/DebugInfo/CodeView/TypeServerHandler.h"
#include "llvm/DebugInfo/CodeView/TypeVisitorCallbacks.h"
using namespace llvm;
using namespace llvm::codeview;
RandomAccessTypeVisitor::RandomAccessTypeVisitor(
const CVTypeArray &Types, uint32_t NumRecords,
PartialOffsetArray PartialOffsets)
: Database(NumRecords), Types(Types), DatabaseVisitor(Database),
PartialOffsets(PartialOffsets) {
KnownOffsets.resize(Database.capacity());
}
Error RandomAccessTypeVisitor::visitTypeIndex(TypeIndex TI,
TypeVisitorCallbacks &Callbacks) {
assert(TI.toArrayIndex() < Database.capacity());
if (!Database.contains(TI)) {
if (auto EC = visitRangeForType(TI))
return EC;
}
assert(Database.contains(TI));
auto &Record = Database.getTypeRecord(TI);
return codeview::visitTypeRecord(Record, TI, Callbacks);
}
Error RandomAccessTypeVisitor::visitRangeForType(TypeIndex TI) {
if (PartialOffsets.empty()) {
TypeIndex TIB(TypeIndex::FirstNonSimpleIndex);
TypeIndex TIE = TIB + Database.capacity();
return visitRange(TIB, 0, TIE);
}
auto Next = std::upper_bound(PartialOffsets.begin(), PartialOffsets.end(), TI,
[](TypeIndex Value, const TypeIndexOffset &IO) {
return Value < IO.Type;
});
assert(Next != PartialOffsets.begin());
auto Prev = std::prev(Next);
TypeIndex TIB = Prev->Type;
TypeIndex TIE;
if (Next == PartialOffsets.end()) {
TIE = TypeIndex::fromArrayIndex(Database.capacity());
} else {
TIE = Next->Type;
}
if (auto EC = visitRange(TIB, Prev->Offset, TIE))
return EC;
return Error::success();
}
Error RandomAccessTypeVisitor::visitRange(TypeIndex Begin, uint32_t BeginOffset,
TypeIndex End) {
auto RI = Types.at(BeginOffset);
assert(RI != Types.end());
while (Begin != End) {
assert(!Database.contains(Begin));
if (auto EC = codeview::visitTypeRecord(*RI, Begin, DatabaseVisitor))
return EC;
KnownOffsets[Begin.toArrayIndex()] = BeginOffset;
BeginOffset += RI.getRecordLength();
++Begin;
++RI;
}
return Error::success();
}
|
