LLVM: lib/MC/MCDXContainerWriter.cpp Source File (original) (raw)
23
24
25
29 uint64_t SectionSize = Asm.getSectionAddressSize(Sec);
30
31 if (SectionSize == 0)
32 continue;
33
34 assert(SectionSize < std::numeric_limits<uint32_t>::max() &&
35 "Section size too large for DXContainer");
36
37 PartOffsets.push_back(PartOffset);
40
41
42 if (Sec.getName() == "DXIL")
44 }
45 assert(PartOffset < std::numeric_limits<uint32_t>::max() &&
46 "Part data too large for DXContainer");
47
50 uint64_t FileSize = PartStart + PartOffset;
51 assert(FileSize < std::numeric_limits<uint32_t>::max() &&
52 "File size too large for DXContainer");
53
54
55 W.write<char>({'D', 'X', 'B', 'C'});
56
57 W.OS.write_zeros(16);
58
61
63
65
68
70 uint64_t SectionSize = Asm.getSectionAddressSize(Sec);
71
72 if (SectionSize == 0)
73 continue;
74
75 unsigned Start = W.OS.tell();
76
77 W.write<char>(ArrayRef(Sec.getName().data(), 4));
78
79 uint64_t PartSize = SectionSize;
80
81 if (Sec.getName() == "DXIL")
83
86 if (Sec.getName() == "DXIL") {
88 memset(reinterpret_cast<void *>(&Header), 0, sizeof(dxbc::ProgramHeader));
89
95 Header.Version =
97 if (TT.hasEnvironment())
98 Header.ShaderKind =
100
101
103 memcpy(Header.Bitcode.Magic, "DXIL", 4);
104 VersionTuple DXILVersion = TT.getDXILVersion();
105 Header.Bitcode.MajorVersion = DXILVersion.getMajor();
106 Header.Bitcode.MinorVersion = DXILVersion.getMinor().value_or(0);
108 Header.Bitcode.Size = SectionSize;
110 Header.swapBytes();
111 W.write<char>(ArrayRef(reinterpret_cast<char *>(&Header),
113 }
114 Asm.writeSectionData(W.OS, &Sec);
115 unsigned Size = W.OS.tell() - Start;
117 }
118 return 0;
119}
const Triple & getTargetTriple() const