blob: abfb6e2e8c6b1dd8b9e4044458590f9dd5fad844 (
plain) (
blame)
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
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- DXContainer.h - DXContainer file implementation ----------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares the DXContainerFile class, which implements the ObjectFile
// interface for DXContainer files.
//
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_OBJECT_DXCONTAINER_H
#define LLVM_OBJECT_DXCONTAINER_H
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/BinaryFormat/DXContainer.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/MemoryBufferRef.h"
namespace llvm {
namespace object {
class DXContainer {
public:
using DXILData = std::pair<dxbc::ProgramHeader, const char *>;
private:
DXContainer(MemoryBufferRef O);
MemoryBufferRef Data;
dxbc::Header Header;
SmallVector<uint32_t, 4> PartOffsets;
std::optional<DXILData> DXIL;
std::optional<uint64_t> ShaderFlags;
std::optional<dxbc::ShaderHash> Hash;
Error parseHeader();
Error parsePartOffsets();
Error parseDXILHeader(StringRef Part);
Error parseShaderFlags(StringRef Part);
Error parseHash(StringRef Part);
friend class PartIterator;
public:
// The PartIterator is a wrapper around the iterator for the PartOffsets
// member of the DXContainer. It contains a refernce to the container, and the
// current iterator value, as well as storage for a parsed part header.
class PartIterator {
const DXContainer &Container;
SmallVectorImpl<uint32_t>::const_iterator OffsetIt;
struct PartData {
dxbc::PartHeader Part;
uint32_t Offset;
StringRef Data;
} IteratorState;
friend class DXContainer;
PartIterator(const DXContainer &C,
SmallVectorImpl<uint32_t>::const_iterator It)
: Container(C), OffsetIt(It) {
if (OffsetIt == Container.PartOffsets.end())
updateIteratorImpl(Container.PartOffsets.back());
else
updateIterator();
}
// Updates the iterator's state data. This results in copying the part
// header into the iterator and handling any required byte swapping. This is
// called when incrementing or decrementing the iterator.
void updateIterator() {
if (OffsetIt != Container.PartOffsets.end())
updateIteratorImpl(*OffsetIt);
}
// Implementation for updating the iterator state based on a specified
// offest.
void updateIteratorImpl(const uint32_t Offset);
public:
PartIterator &operator++() {
if (OffsetIt == Container.PartOffsets.end())
return *this;
++OffsetIt;
updateIterator();
return *this;
}
PartIterator operator++(int) {
PartIterator Tmp = *this;
++(*this);
return Tmp;
}
bool operator==(const PartIterator &RHS) const {
return OffsetIt == RHS.OffsetIt;
}
bool operator!=(const PartIterator &RHS) const {
return OffsetIt != RHS.OffsetIt;
}
const PartData &operator*() { return IteratorState; }
const PartData *operator->() { return &IteratorState; }
};
PartIterator begin() const {
return PartIterator(*this, PartOffsets.begin());
}
PartIterator end() const { return PartIterator(*this, PartOffsets.end()); }
StringRef getData() const { return Data.getBuffer(); }
static Expected<DXContainer> create(MemoryBufferRef Object);
const dxbc::Header &getHeader() const { return Header; }
std::optional<DXILData> getDXIL() const { return DXIL; }
std::optional<uint64_t> getShaderFlags() const { return ShaderFlags; }
std::optional<dxbc::ShaderHash> getShaderHash() const { return Hash; }
};
} // namespace object
} // namespace llvm
#endif // LLVM_OBJECT_DXCONTAINER_H
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
