1 // Copyright (c) 2019 Google Inc.
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 <cstdint>
16 #include <cstring> // memcpy
17 #include <vector>
18
19 #include "source/spirv_target_env.h"
20 #include "spirv-tools/libspirv.hpp"
21
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)22 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
23 if (size < sizeof(spv_target_env) + 1) return 0;
24
25 const spv_context context =
26 spvContextCreate(*reinterpret_cast<const spv_target_env*>(data));
27 if (context == nullptr) return 0;
28
29 data += sizeof(spv_target_env);
30 size -= sizeof(spv_target_env);
31
32 std::vector<uint32_t> input;
33 input.resize(size >> 2);
34 size_t count = 0;
35 for (size_t i = 0; (i + 3) < size; i += 4) {
36 input[count++] = data[i] | (data[i + 1] << 8) | (data[i + 2] << 16) |
37 (data[i + 3]) << 24;
38 }
39
40 std::vector<char> input_str;
41 size_t char_count = input.size() * sizeof(uint32_t) / sizeof(char);
42 input_str.resize(char_count);
43 memcpy(input_str.data(), input.data(), input.size() * sizeof(uint32_t));
44
45 spv_text text = nullptr;
46 spv_diagnostic diagnostic = nullptr;
47
48 for (uint32_t options = SPV_BINARY_TO_TEXT_OPTION_NONE;
49 options <
50 (SPV_BINARY_TO_TEXT_OPTION_PRINT | SPV_BINARY_TO_TEXT_OPTION_COLOR |
51 SPV_BINARY_TO_TEXT_OPTION_INDENT |
52 SPV_BINARY_TO_TEXT_OPTION_SHOW_BYTE_OFFSET |
53 SPV_BINARY_TO_TEXT_OPTION_NO_HEADER |
54 SPV_BINARY_TO_TEXT_OPTION_FRIENDLY_NAMES);
55 options++) {
56 spvBinaryToText(context, input.data(), input.size(), options, &text,
57 &diagnostic);
58 if (diagnostic) {
59 spvDiagnosticDestroy(diagnostic);
60 diagnostic = nullptr;
61 }
62
63 if (text) {
64 spvTextDestroy(text);
65 text = nullptr;
66 }
67 }
68
69 spvContextDestroy(context);
70 return 0;
71 }
72