src/runtime/hexagon/hexagon_module.cc

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/*!
 * \file hexagon_module.cc
 * \brief The HexagonModuleNode
 */
#include "hexagon_module.h"

#include <tvm/ffi/extra/module.h>
#include <tvm/ffi/function.h>
#include <tvm/support/io.h>

#include <string>
#include <utility>
#include <vector>

#include "../../support/bytes_io.h"
#include "../file_utils.h"

namespace tvm {
namespace runtime {

HexagonModuleNode::HexagonModuleNode(std::string data, std::string fmt,
                                     ffi::Map<ffi::String, FunctionInfo> fmap, std::string asm_str,
                                     std::string obj_str, std::string ir_str, std::string bc_str)
    : data_(data), fmt_(fmt), fmap_(fmap), asm_(asm_str), obj_(obj_str), ir_(ir_str), bc_(bc_str) {}

ffi::Optional<ffi::Function> HexagonModuleNode::GetFunction(const ffi::String& name) {
  TVM_FFI_THROW(InternalError) << "HexagonModuleNode::GetFunction is not implemented.";
}

ffi::String HexagonModuleNode::InspectSource(const ffi::String& format) const {
  if (format == "s" || format == "asm") {
    return asm_;
  }
  if (format == "ll") {
    return ir_;
  }
  return "";
}

void HexagonModuleNode::WriteToFile(const ffi::String& file_name, const ffi::String& format) const {
  std::string fmt = runtime::GetFileFormat(file_name, format);
  if (fmt == "so" || fmt == "dll" || fmt == "hexagon") {
    std::string meta_file = GetMetaFilePath(file_name);
    SaveMetaDataToFile(meta_file, fmap_);
    CopyFile(data_, file_name);
  } else if (fmt == "s" || fmt == "asm") {
    TVM_FFI_ICHECK(!asm_.empty()) << "Assembler source not available";
    SaveBinaryToFile(file_name, asm_);
  } else if (fmt == "o" || fmt == "obj") {
    TVM_FFI_ICHECK(!obj_.empty()) << "Object data not available";
    SaveBinaryToFile(file_name, obj_);
  } else if (fmt == "ll") {
    TVM_FFI_ICHECK(!ir_.empty()) << "LLVM IR source not available";
    SaveBinaryToFile(file_name, ir_);
  } else if (fmt == "bc") {
    TVM_FFI_ICHECK(!bc_.empty()) << "LLVM IR bitcode not available";
    SaveBinaryToFile(file_name, bc_);
  } else {
    TVM_FFI_THROW(InternalError) << "HexagonModuleNode::SaveToFile: unhandled format `" << fmt
                                 << "'";
  }
}

ffi::Bytes HexagonModuleNode::SaveToBytes() const {
  std::string result;
  support::BytesOutStream stream(&result);
  stream.Write(fmt_);
  stream.Write(fmap_);
  stream.Write(data_);
  return ffi::Bytes(std::move(result));
}

ffi::Module HexagonModuleCreate(std::string data, std::string fmt,
                                ffi::Map<ffi::String, FunctionInfo> fmap, std::string asm_str,
                                std::string obj_str, std::string ir_str, std::string bc_str) {
  auto n = ffi::make_object<HexagonModuleNode>(data, fmt, fmap, asm_str, obj_str, ir_str, bc_str);
  return ffi::Module(n);
}

}  // namespace runtime
}  // namespace tvm