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
MakeInstructionMessage(const opt::Instruction * instruction)39 protobufs::Instruction MakeInstructionMessage(
40 const opt::Instruction* instruction) {
41 opt::Instruction::OperandList input_operands;
42 for (uint32_t input_operand_index = 0;
43 input_operand_index < instruction->NumInOperands();
44 input_operand_index++) {
45 input_operands.push_back(instruction->GetInOperand(input_operand_index));
46 }
47 return MakeInstructionMessage(instruction->opcode(), instruction->type_id(),
48 instruction->result_id(), input_operands);
49 }
50
InstructionFromMessage(opt::IRContext * ir_context,const protobufs::Instruction & instruction_message)51 std::unique_ptr<opt::Instruction> InstructionFromMessage(
52 opt::IRContext* ir_context,
53 const protobufs::Instruction& instruction_message) {
54 // First, update the module's id bound with respect to the new instruction,
55 // if it has a result id.
56 if (instruction_message.result_id()) {
57 fuzzerutil::UpdateModuleIdBound(ir_context,
58 instruction_message.result_id());
59 }
60 // Now create a sequence of input operands from the input operand data in the
61 // protobuf message.
62 opt::Instruction::OperandList in_operands;
63 for (auto& operand_message : instruction_message.input_operand()) {
64 opt::Operand::OperandData operand_data;
65 for (auto& word : operand_message.operand_data()) {
66 operand_data.push_back(word);
67 }
68 in_operands.push_back(
69 {static_cast<spv_operand_type_t>(operand_message.operand_type()),
70 operand_data});
71 }
72 // Create and return the instruction.
73 return MakeUnique<opt::Instruction>(
74 ir_context, static_cast<SpvOp>(instruction_message.opcode()),
75 instruction_message.result_type_id(), instruction_message.result_id(),
76 in_operands);
77 }
78
79 } // namespace fuzz
80 } // namespace spvtools
81