xref: /freebsd/contrib/llvm-project/llvm/include/llvm-c/Support.h (revision d11f81afd5a4a71d5f725950b0592ca212084780)
1 /*===-- llvm-c/Support.h - Support C Interface --------------------*- C -*-===*\
2 |*                                                                            *|
3 |* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
4 |* Exceptions.                                                                *|
5 |* See https://llvm.org/LICENSE.txt for license information.                  *|
6 |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
7 |*                                                                            *|
8 |*===----------------------------------------------------------------------===*|
9 |*                                                                            *|
10 |* This file defines the C interface to the LLVM support library.             *|
11 |*                                                                            *|
12 \*===----------------------------------------------------------------------===*/
13 
14 #ifndef LLVM_C_SUPPORT_H
15 #define LLVM_C_SUPPORT_H
16 
17 #include "llvm-c/DataTypes.h"
18 #include "llvm-c/ExternC.h"
19 #include "llvm-c/Types.h"
20 
21 LLVM_C_EXTERN_C_BEGIN
22 
23 /**
24  * This function permanently loads the dynamic library at the given path.
25  * It is safe to call this function multiple times for the same library.
26  *
27  * @see sys::DynamicLibrary::LoadLibraryPermanently()
28   */
29 LLVMBool LLVMLoadLibraryPermanently(const char* Filename);
30 
31 /**
32  * This function parses the given arguments using the LLVM command line parser.
33  * Note that the only stable thing about this function is its signature; you
34  * cannot rely on any particular set of command line arguments being interpreted
35  * the same way across LLVM versions.
36  *
37  * @see llvm::cl::ParseCommandLineOptions()
38  */
39 void LLVMParseCommandLineOptions(int argc, const char *const *argv,
40                                  const char *Overview);
41 
42 /**
43  * This function will search through all previously loaded dynamic
44  * libraries for the symbol \p symbolName. If it is found, the address of
45  * that symbol is returned. If not, null is returned.
46  *
47  * @see sys::DynamicLibrary::SearchForAddressOfSymbol()
48  */
49 void *LLVMSearchForAddressOfSymbol(const char *symbolName);
50 
51 /**
52  * This functions permanently adds the symbol \p symbolName with the
53  * value \p symbolValue.  These symbols are searched before any
54  * libraries.
55  *
56  * @see sys::DynamicLibrary::AddSymbol()
57  */
58 void LLVMAddSymbol(const char *symbolName, void *symbolValue);
59 
60 LLVM_C_EXTERN_C_END
61 
62 #endif
63