1//===- DXContainerEmitter.cpp - Convert YAML to a DXContainer -------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// Binary emitter for yaml to DXContainer binary
11///
12//===----------------------------------------------------------------------===//
13
14#include "llvm/BinaryFormat/DXContainer.h"
15#include "llvm/MC/DXContainerPSVInfo.h"
16#include "llvm/ObjectYAML/ObjectYAML.h"
17#include "llvm/ObjectYAML/yaml2obj.h"
18#include "llvm/Support/Errc.h"
19#include "llvm/Support/Error.h"
20#include "llvm/Support/raw_ostream.h"
21
22using namespace llvm;
23
24namespace {
25class DXContainerWriter {
26public:
27 DXContainerWriter(DXContainerYAML::Object &ObjectFile)
28 : ObjectFile(ObjectFile) {}
29
30 Error write(raw_ostream &OS);
31
32private:
33 DXContainerYAML::Object &ObjectFile;
34
35 Error computePartOffsets();
36 Error validatePartOffsets();
37 Error validateSize(uint32_t Computed);
38
39 void writeHeader(raw_ostream &OS);
40 void writeParts(raw_ostream &OS);
41};
42} // namespace
43
44Error DXContainerWriter::validateSize(uint32_t Computed) {
45 if (!ObjectFile.Header.FileSize)
46 ObjectFile.Header.FileSize = Computed;
47 else if (*ObjectFile.Header.FileSize < Computed)
48 return createStringError(EC: errc::result_out_of_range,
49 Msg: "File size specified is too small.");
50 return Error::success();
51}
52
53Error DXContainerWriter::validatePartOffsets() {
54 if (ObjectFile.Parts.size() != ObjectFile.Header.PartOffsets->size())
55 return createStringError(
56 EC: errc::invalid_argument,
57 Msg: "Mismatch between number of parts and part offsets.");
58 uint32_t RollingOffset =
59 sizeof(dxbc::Header) + (ObjectFile.Header.PartCount * sizeof(uint32_t));
60 for (auto I : llvm::zip(t&: ObjectFile.Parts, u&: *ObjectFile.Header.PartOffsets)) {
61 if (RollingOffset > std::get<1>(t&: I))
62 return createStringError(EC: errc::invalid_argument,
63 Msg: "Offset mismatch, not enough space for data.");
64 RollingOffset =
65 std::get<1>(t&: I) + sizeof(dxbc::PartHeader) + std::get<0>(t&: I).Size;
66 }
67 if (Error Err = validateSize(Computed: RollingOffset))
68 return Err;
69
70 return Error::success();
71}
72
73Error DXContainerWriter::computePartOffsets() {
74 if (ObjectFile.Header.PartOffsets)
75 return validatePartOffsets();
76 uint32_t RollingOffset =
77 sizeof(dxbc::Header) + (ObjectFile.Header.PartCount * sizeof(uint32_t));
78 ObjectFile.Header.PartOffsets = std::vector<uint32_t>();
79 for (const auto &Part : ObjectFile.Parts) {
80 ObjectFile.Header.PartOffsets->push_back(x: RollingOffset);
81 RollingOffset += sizeof(dxbc::PartHeader) + Part.Size;
82 }
83 if (Error Err = validateSize(Computed: RollingOffset))
84 return Err;
85
86 return Error::success();
87}
88
89void DXContainerWriter::writeHeader(raw_ostream &OS) {
90 dxbc::Header Header;
91 memcpy(dest: Header.Magic, src: "DXBC", n: 4);
92 memcpy(dest: Header.FileHash.Digest, src: ObjectFile.Header.Hash.data(), n: 16);
93 Header.Version.Major = ObjectFile.Header.Version.Major;
94 Header.Version.Minor = ObjectFile.Header.Version.Minor;
95 Header.FileSize = *ObjectFile.Header.FileSize;
96 Header.PartCount = ObjectFile.Parts.size();
97 if (sys::IsBigEndianHost)
98 Header.swapBytes();
99 OS.write(Ptr: reinterpret_cast<char *>(&Header), Size: sizeof(Header));
100 SmallVector<uint32_t> Offsets(ObjectFile.Header.PartOffsets->begin(),
101 ObjectFile.Header.PartOffsets->end());
102 if (sys::IsBigEndianHost)
103 for (auto &O : Offsets)
104 sys::swapByteOrder(Value&: O);
105 OS.write(Ptr: reinterpret_cast<char *>(Offsets.data()),
106 Size: Offsets.size() * sizeof(uint32_t));
107}
108
109void DXContainerWriter::writeParts(raw_ostream &OS) {
110 uint32_t RollingOffset =
111 sizeof(dxbc::Header) + (ObjectFile.Header.PartCount * sizeof(uint32_t));
112 for (auto I : llvm::zip(t&: ObjectFile.Parts, u&: *ObjectFile.Header.PartOffsets)) {
113 if (RollingOffset < std::get<1>(t&: I)) {
114 uint32_t PadBytes = std::get<1>(t&: I) - RollingOffset;
115 OS.write_zeros(NumZeros: PadBytes);
116 }
117 DXContainerYAML::Part P = std::get<0>(t&: I);
118 RollingOffset = std::get<1>(t&: I) + sizeof(dxbc::PartHeader);
119 uint32_t PartSize = P.Size;
120
121 OS.write(Ptr: P.Name.c_str(), Size: 4);
122 if (sys::IsBigEndianHost)
123 sys::swapByteOrder(Value&: P.Size);
124 OS.write(Ptr: reinterpret_cast<const char *>(&P.Size), Size: sizeof(uint32_t));
125
126 dxbc::PartType PT = dxbc::parsePartType(S: P.Name);
127
128 uint64_t DataStart = OS.tell();
129 switch (PT) {
130 case dxbc::PartType::DXIL: {
131 if (!P.Program)
132 continue;
133 dxbc::ProgramHeader Header;
134 Header.MajorVersion = P.Program->MajorVersion;
135 Header.MinorVersion = P.Program->MinorVersion;
136 Header.Unused = 0;
137 Header.ShaderKind = P.Program->ShaderKind;
138 memcpy(dest: Header.Bitcode.Magic, src: "DXIL", n: 4);
139 Header.Bitcode.MajorVersion = P.Program->DXILMajorVersion;
140 Header.Bitcode.MinorVersion = P.Program->DXILMinorVersion;
141 Header.Bitcode.Unused = 0;
142
143 // Compute the optional fields if needed...
144 if (P.Program->DXILOffset)
145 Header.Bitcode.Offset = *P.Program->DXILOffset;
146 else
147 Header.Bitcode.Offset = sizeof(dxbc::BitcodeHeader);
148
149 if (P.Program->DXILSize)
150 Header.Bitcode.Size = *P.Program->DXILSize;
151 else
152 Header.Bitcode.Size = P.Program->DXIL ? P.Program->DXIL->size() : 0;
153
154 if (P.Program->Size)
155 Header.Size = *P.Program->Size;
156 else
157 Header.Size = sizeof(dxbc::ProgramHeader) + Header.Bitcode.Size;
158
159 uint32_t BitcodeOffset = Header.Bitcode.Offset;
160 if (sys::IsBigEndianHost)
161 Header.swapBytes();
162 OS.write(Ptr: reinterpret_cast<const char *>(&Header),
163 Size: sizeof(dxbc::ProgramHeader));
164 if (P.Program->DXIL) {
165 if (BitcodeOffset > sizeof(dxbc::BitcodeHeader)) {
166 uint32_t PadBytes = BitcodeOffset - sizeof(dxbc::BitcodeHeader);
167 OS.write_zeros(NumZeros: PadBytes);
168 }
169 OS.write(Ptr: reinterpret_cast<char *>(P.Program->DXIL->data()),
170 Size: P.Program->DXIL->size());
171 }
172 break;
173 }
174 case dxbc::PartType::SFI0: {
175 // If we don't have any flags we can continue here and the data will be
176 // zeroed out.
177 if (!P.Flags.has_value())
178 continue;
179 uint64_t Flags = P.Flags->getEncodedFlags();
180 if (sys::IsBigEndianHost)
181 sys::swapByteOrder(Value&: Flags);
182 OS.write(Ptr: reinterpret_cast<char *>(&Flags), Size: sizeof(uint64_t));
183 break;
184 }
185 case dxbc::PartType::HASH: {
186 if (!P.Hash.has_value())
187 continue;
188 dxbc::ShaderHash Hash = {.Flags: 0, .Digest: {0}};
189 if (P.Hash->IncludesSource)
190 Hash.Flags |= static_cast<uint32_t>(dxbc::HashFlags::IncludesSource);
191 memcpy(dest: &Hash.Digest[0], src: &P.Hash->Digest[0], n: 16);
192 if (sys::IsBigEndianHost)
193 Hash.swapBytes();
194 OS.write(Ptr: reinterpret_cast<char *>(&Hash), Size: sizeof(dxbc::ShaderHash));
195 break;
196 }
197 case dxbc::PartType::PSV0: {
198 if (!P.Info.has_value())
199 continue;
200 mcdxbc::PSVRuntimeInfo PSV;
201 memcpy(dest: &PSV.BaseData, src: &P.Info->Info, n: sizeof(dxbc::PSV::v3::RuntimeInfo));
202 PSV.Resources = P.Info->Resources;
203 PSV.EntryName = P.Info->EntryName;
204
205 for (auto El : P.Info->SigInputElements)
206 PSV.InputElements.push_back(Elt: mcdxbc::PSVSignatureElement{
207 .Name: El.Name, .Indices: El.Indices, .StartRow: El.StartRow, .Cols: El.Cols, .StartCol: El.StartCol,
208 .Allocated: El.Allocated, .Kind: El.Kind, .Type: El.Type, .Mode: El.Mode, .DynamicMask: El.DynamicMask,
209 .Stream: El.Stream});
210
211 for (auto El : P.Info->SigOutputElements)
212 PSV.OutputElements.push_back(Elt: mcdxbc::PSVSignatureElement{
213 .Name: El.Name, .Indices: El.Indices, .StartRow: El.StartRow, .Cols: El.Cols, .StartCol: El.StartCol,
214 .Allocated: El.Allocated, .Kind: El.Kind, .Type: El.Type, .Mode: El.Mode, .DynamicMask: El.DynamicMask,
215 .Stream: El.Stream});
216
217 for (auto El : P.Info->SigPatchOrPrimElements)
218 PSV.PatchOrPrimElements.push_back(Elt: mcdxbc::PSVSignatureElement{
219 .Name: El.Name, .Indices: El.Indices, .StartRow: El.StartRow, .Cols: El.Cols, .StartCol: El.StartCol,
220 .Allocated: El.Allocated, .Kind: El.Kind, .Type: El.Type, .Mode: El.Mode, .DynamicMask: El.DynamicMask,
221 .Stream: El.Stream});
222
223 static_assert(PSV.OutputVectorMasks.size() == PSV.InputOutputMap.size());
224 for (unsigned I = 0; I < PSV.OutputVectorMasks.size(); ++I) {
225 PSV.OutputVectorMasks[I].insert(I: PSV.OutputVectorMasks[I].begin(),
226 From: P.Info->OutputVectorMasks[I].begin(),
227 To: P.Info->OutputVectorMasks[I].end());
228 PSV.InputOutputMap[I].insert(I: PSV.InputOutputMap[I].begin(),
229 From: P.Info->InputOutputMap[I].begin(),
230 To: P.Info->InputOutputMap[I].end());
231 }
232
233 PSV.PatchOrPrimMasks.insert(I: PSV.PatchOrPrimMasks.begin(),
234 From: P.Info->PatchOrPrimMasks.begin(),
235 To: P.Info->PatchOrPrimMasks.end());
236 PSV.InputPatchMap.insert(I: PSV.InputPatchMap.begin(),
237 From: P.Info->InputPatchMap.begin(),
238 To: P.Info->InputPatchMap.end());
239 PSV.PatchOutputMap.insert(I: PSV.PatchOutputMap.begin(),
240 From: P.Info->PatchOutputMap.begin(),
241 To: P.Info->PatchOutputMap.end());
242
243 PSV.finalize(Stage: static_cast<Triple::EnvironmentType>(
244 Triple::Pixel + P.Info->Info.ShaderStage));
245 PSV.write(OS, Version: P.Info->Version);
246 break;
247 }
248 case dxbc::PartType::ISG1:
249 case dxbc::PartType::OSG1:
250 case dxbc::PartType::PSG1: {
251 mcdxbc::Signature Sig;
252 if (P.Signature.has_value()) {
253 for (const auto &Param : P.Signature->Parameters) {
254 Sig.addParam(Stream: Param.Stream, Name: Param.Name, Index: Param.Index, SystemValue: Param.SystemValue,
255 CompType: Param.CompType, Register: Param.Register, Mask: Param.Mask,
256 ExclusiveMask: Param.ExclusiveMask, MinPrecision: Param.MinPrecision);
257 }
258 }
259 Sig.write(OS);
260 break;
261 }
262 case dxbc::PartType::Unknown:
263 break; // Skip any handling for unrecognized parts.
264 }
265 uint64_t BytesWritten = OS.tell() - DataStart;
266 RollingOffset += BytesWritten;
267 if (BytesWritten < PartSize)
268 OS.write_zeros(NumZeros: PartSize - BytesWritten);
269 RollingOffset += PartSize;
270 }
271}
272
273Error DXContainerWriter::write(raw_ostream &OS) {
274 if (Error Err = computePartOffsets())
275 return Err;
276 writeHeader(OS);
277 writeParts(OS);
278 return Error::success();
279}
280
281namespace llvm {
282namespace yaml {
283
284bool yaml2dxcontainer(DXContainerYAML::Object &Doc, raw_ostream &Out,
285 ErrorHandler EH) {
286 DXContainerWriter Writer(Doc);
287 if (Error Err = Writer.write(OS&: Out)) {
288 handleAllErrors(E: std::move(Err),
289 Handlers: [&](const ErrorInfoBase &Err) { EH(Err.message()); });
290 return false;
291 }
292 return true;
293}
294
295} // namespace yaml
296} // namespace llvm
297

source code of llvm/lib/ObjectYAML/DXContainerEmitter.cpp