blob: 6c26ec4cff6464f560510274aa442c88159cc1ed (
plain)
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
|
//===- DXContainerWriter.cpp ----------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "DXContainerWriter.h"
namespace llvm {
namespace objcopy {
namespace dxbc {
using namespace object;
size_t DXContainerWriter::finalize() {
assert(Offsets.empty() &&
"Attempted to finalize writer with already computed offsets");
Offsets.reserve(Obj.Parts.size());
size_t Offset = Obj.headerSize();
for (const Part &P : Obj.Parts) {
Offsets.push_back(Offset);
Offset += P.size();
}
return Obj.Header.FileSize;
}
Error DXContainerWriter::write() {
size_t TotalSize = finalize();
Out.reserveExtraSpace(TotalSize);
llvm::dxbc::Header Header = Obj.Header;
if (sys::IsBigEndianHost)
Header.swapBytes();
Out.write(reinterpret_cast<const char *>(&Header),
sizeof(::llvm::dxbc::Header));
if (sys::IsBigEndianHost)
for (auto &O : Offsets)
sys::swapByteOrder(O);
Out.write(reinterpret_cast<const char *>(Offsets.data()),
Offsets.size() * sizeof(uint32_t));
for (const Part &P : Obj.Parts) {
Out.write(reinterpret_cast<const char *>(P.Name.data()), 4);
uint32_t Size = P.Data.size();
if (sys::IsBigEndianHost)
sys::swapByteOrder(Size);
Out.write(reinterpret_cast<const char *>(&Size), sizeof(uint32_t));
Out.write(reinterpret_cast<const char *>(P.Data.data()), P.Data.size());
}
return Error::success();
}
} // end namespace dxbc
} // end namespace objcopy
} // end namespace llvm
|
