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1 // Copyright (c) 2019 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #include "source/fuzz/instruction_message.h"
16 
17 #include "source/fuzz/fuzzer_util.h"
18 
19 namespace spvtools {
20 namespace fuzz {
21 
MakeInstructionMessage(SpvOp opcode,uint32_t result_type_id,uint32_t result_id,const opt::Instruction::OperandList & input_operands)22 protobufs::Instruction MakeInstructionMessage(
23     SpvOp opcode, uint32_t result_type_id, uint32_t result_id,
24     const opt::Instruction::OperandList& input_operands) {
25   protobufs::Instruction result;
26   result.set_opcode(opcode);
27   result.set_result_type_id(result_type_id);
28   result.set_result_id(result_id);
29   for (auto& operand : input_operands) {
30     auto operand_message = result.add_input_operand();
31     operand_message->set_operand_type(static_cast<uint32_t>(operand.type));
32     for (auto operand_word : operand.words) {
33       operand_message->add_operand_data(operand_word);
34     }
35   }
36   return result;
37 }
38 
InstructionFromMessage(opt::IRContext * ir_context,const protobufs::Instruction & instruction_message)39 std::unique_ptr<opt::Instruction> InstructionFromMessage(
40     opt::IRContext* ir_context,
41     const protobufs::Instruction& instruction_message) {
42   // First, update the module's id bound with respect to the new instruction,
43   // if it has a result id.
44   if (instruction_message.result_id()) {
45     fuzzerutil::UpdateModuleIdBound(ir_context,
46                                     instruction_message.result_id());
47   }
48   // Now create a sequence of input operands from the input operand data in the
49   // protobuf message.
50   opt::Instruction::OperandList in_operands;
51   for (auto& operand_message : instruction_message.input_operand()) {
52     opt::Operand::OperandData operand_data;
53     for (auto& word : operand_message.operand_data()) {
54       operand_data.push_back(word);
55     }
56     in_operands.push_back(
57         {static_cast<spv_operand_type_t>(operand_message.operand_type()),
58          operand_data});
59   }
60   // Create and return the instruction.
61   return MakeUnique<opt::Instruction>(
62       ir_context, static_cast<SpvOp>(instruction_message.opcode()),
63       instruction_message.result_type_id(), instruction_message.result_id(),
64       in_operands);
65 }
66 
67 }  // namespace fuzz
68 }  // namespace spvtools
69