1 /*
2  * Copyright (C) 2020-2021 Intel Corporation
3  *
4  * SPDX-License-Identifier: MIT
5  *
6  */
7 
8 #pragma once
9 
10 #include "shared/source/utilities/arrayref.h"
11 #include "shared/source/utilities/const_stringref.h"
12 
13 #include <algorithm>
14 #include <cstdint>
15 
16 namespace NEO {
17 
18 static constexpr ConstStringRef llvmBcMagic = "BC\xc0\xde";
19 static constexpr ConstStringRef spirvMagic = "\x07\x23\x02\x03";
20 static constexpr ConstStringRef spirvMagicInv = "\x03\x02\x23\x07";
21 
hasSameMagic(ConstStringRef expectedMagic,ArrayRef<const uint8_t> binary)22 inline bool hasSameMagic(ConstStringRef expectedMagic, ArrayRef<const uint8_t> binary) {
23     auto binaryMagicLen = std::min(expectedMagic.size(), binary.size());
24     ConstStringRef binaryMagic(reinterpret_cast<const char *>(binary.begin()), binaryMagicLen);
25     return expectedMagic == binaryMagic;
26 }
27 
isLlvmBitcode(ArrayRef<const uint8_t> binary)28 inline bool isLlvmBitcode(ArrayRef<const uint8_t> binary) {
29     return hasSameMagic(llvmBcMagic, binary);
30 }
31 
isSpirVBitcode(ArrayRef<const uint8_t> binary)32 inline bool isSpirVBitcode(ArrayRef<const uint8_t> binary) {
33     return hasSameMagic(spirvMagic, binary) || hasSameMagic(spirvMagicInv, binary);
34 }
35 
36 } // namespace NEO
37