1 // Copyright (c) 2015-2016 The Khronos Group 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 #ifndef SOURCE_SPIRV_ENDIAN_H_
16 #define SOURCE_SPIRV_ENDIAN_H_
17 
18 #include "spirv-tools/libspirv.h"
19 
20 // Converts a word in the specified endianness to the host native endianness.
21 uint32_t spvFixWord(const uint32_t word, const spv_endianness_t endianness);
22 
23 // Converts a pair of words in the specified endianness to the host native
24 // endianness.
25 uint64_t spvFixDoubleWord(const uint32_t low, const uint32_t high,
26                           const spv_endianness_t endianness);
27 
28 // Gets the endianness of the SPIR-V module given in the binary parameter.
29 // Returns SPV_ENDIANNESS_UNKNOWN if the SPIR-V magic number is invalid,
30 // otherwise writes the determined endianness into *endian.
31 spv_result_t spvBinaryEndianness(const spv_const_binary binary,
32                                  spv_endianness_t* endian);
33 
34 // Returns true if the given endianness matches the host's native endiannes.
35 bool spvIsHostEndian(spv_endianness_t endian);
36 
37 #endif  // SOURCE_SPIRV_ENDIAN_H_
38