llvm/lib/ObjectYAML/OffloadEmitter.cpp

   1 //===- OffloadEmitter.cpp -------------------------------------------------===//
   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 #include "llvm/Object/OffloadBinary.h"
  10 #include "llvm/ObjectYAML/OffloadYAML.h"
  11 #include "llvm/ObjectYAML/yaml2obj.h"
  12 #include "llvm/Support/raw_ostream.h"
  13
  14 using namespace llvm;
  15 using namespace OffloadYAML;
  16
  17 namespace llvm {
  18 namespace yaml {
  19
  20 bool yaml2offload(Binary &Doc, raw_ostream &Out, ErrorHandler EH) {
  21   for (const auto &Member : Doc.Members) {
  22     object::OffloadBinary::OffloadingImage Image{};
  23     if (Member.ImageKind)
  24       Image.TheImageKind = *Member.ImageKind;
  25     if (Member.OffloadKind)
  26       Image.TheOffloadKind = *Member.OffloadKind;
  27     if (Member.Flags)
  28       Image.Flags = *Member.Flags;
  29
  30     if (Member.StringEntries)
  31       for (const auto &Entry : *Member.StringEntries)
  32         Image.StringData[Entry.Key] = Entry.Value;
  33
  34     SmallVector<char, 1024> Data;
  35     raw_svector_ostream OS(Data);
  36     if (Member.Content)
  37       Member.Content->writeAsBinary(OS);
  38     Image.Image = MemoryBuffer::getMemBufferCopy(OS.str());
  39
  40     // Copy the data to a new buffer so we can modify the bytes directly.
  41     auto Buffer = object::OffloadBinary::write(Image);
  42     auto *TheHeader =
  43         reinterpret_cast<object::OffloadBinary::Header *>(&Buffer[0]);
  44     if (Doc.Version)
  45       TheHeader->Version = *Doc.Version;
  46     if (Doc.Size)
  47       TheHeader->Size = *Doc.Size;
  48     if (Doc.EntryOffset)
  49       TheHeader->EntryOffset = *Doc.EntryOffset;
  50     if (Doc.EntrySize)
  51       TheHeader->EntrySize = *Doc.EntrySize;
  52
  53     Out.write(Buffer.begin(), Buffer.size());
  54   }
  55
  56   return true;
  57 }
  58
  59 } // namespace yaml
  60 } // namespace llvm