[Orc] Re-add C bindings for the Orc APIs, with a fix to remove the union that
[oota-llvm.git] / include / llvm-c / OrcBindings.h
1 /*===----------- llvm-c/OrcBindings.h - Orc Lib C Iface ---------*- C++ -*-===*\
2 |*                                                                            *|
3 |*                     The LLVM Compiler Infrastructure                       *|
4 |*                                                                            *|
5 |* This file is distributed under the University of Illinois Open Source      *|
6 |* License. See LICENSE.TXT for details.                                      *|
7 |*                                                                            *|
8 |*===----------------------------------------------------------------------===*|
9 |*                                                                            *|
10 |* This header declares the C interface to libLLVMOrcJIT.a, which implements  *|
11 |* JIT compilation of LLVM IR.                                                *|
12 |*                                                                            *|
13 |* Many exotic languages can interoperate with C code but have a harder time  *|
14 |* with C++ due to name mangling. So in addition to C, this interface enables *|
15 |* tools written in such languages.                                           *|
16 |*                                                                            *|
17 |* Note: This interface is experimental. It is *NOT* stable, and may be       *|
18 |*       changed without warning.                                             *|
19 |*                                                                            *|
20 \*===----------------------------------------------------------------------===*/
21
22 #ifndef LLVM_C_ORCBINDINGS_H
23 #define LLVM_C_ORCBINDINGS_H
24
25 #include "llvm-c/Object.h"
26 #include "llvm-c/Support.h"
27 #include "llvm-c/TargetMachine.h"
28
29 #ifdef __cplusplus
30 extern "C" {
31 #endif
32
33 typedef struct LLVMOrcOpaqueJITStack *LLVMOrcJITStackRef;
34 typedef uint32_t LLVMOrcModuleHandle;
35 typedef uint64_t LLVMOrcTargetAddress;
36 typedef uint64_t (*LLVMOrcSymbolResolverFn)(const char *Name,
37                                             void *LookupCtx);
38
39 /**
40  * Create an ORC JIT stack.
41  *
42  * The client owns the resulting stack, and must call OrcDisposeInstance(...)
43  * to destroy it and free its memory. The JIT stack will take ownership of the
44  * TargetMachine, which will be destroyed when the stack is destroyed. The
45  * client should not attempt to dispose of the Target Machine, or it will result
46  * in a double-free.
47  */
48 LLVMOrcJITStackRef LLVMOrcCreateInstance(LLVMTargetMachineRef TM,
49                                          LLVMContextRef Context);
50
51 /**
52  * Mangle the given symbol.
53  * Memory will be allocated for MangledSymbol to hold the result. The client
54  */
55 void LLVMOrcGetMangledSymbol(LLVMOrcJITStackRef JITStack, char **MangledSymbol,
56                              const char *Symbol);
57
58 /**
59  * Dispose of a mangled symbol.
60  */
61
62 void LLVMOrcDisposeMangledSymbol(char *MangledSymbol);
63
64 /**
65  * Add module to be eagerly compiled.
66  */
67 LLVMOrcModuleHandle
68 LLVMOrcAddEagerlyCompiledIR(LLVMOrcJITStackRef JITStack, LLVMModuleRef Mod,
69                             LLVMOrcSymbolResolverFn SymbolResolver,
70                             void *SymbolResolverCtx);
71
72 /**
73  * Add module to be lazily compiled one function at a time.
74  */
75 LLVMOrcModuleHandle
76 LLVMOrcAddLazilyCompiledIR(LLVMOrcJITStackRef JITStack, LLVMModuleRef Mod,
77                            LLVMOrcSymbolResolverFn SymbolResolver,
78                            void *SymbolResolverCtx);
79
80 /**
81  * Add an object file.
82  */
83 LLVMOrcModuleHandle
84 LLVMOrcAddObjectFile(LLVMOrcJITStackRef JITStack, LLVMObjectFileRef Obj,
85                      LLVMOrcSymbolResolverFn SymbolResolver,
86                      void *SymbolResolverCtx);
87
88 /**
89  * Remove a module set from the JIT.
90  *
91  * This works for all modules that can be added via OrcAdd*, including object
92  * files.
93  */
94 void LLVMOrcRemoveModule(LLVMOrcJITStackRef JITStack, LLVMOrcModuleHandle H);
95
96 /**
97  * Get symbol address from JIT instance.
98  */
99 LLVMOrcTargetAddress LLVMOrcGetSymbolAddress(LLVMOrcJITStackRef JITStack,
100                                              const char *SymbolName);
101
102 /**
103  * Dispose of an ORC JIT stack.
104  */
105 void LLVMOrcDisposeInstance(LLVMOrcJITStackRef JITStack);
106
107 #ifdef __cplusplus
108 }
109 #endif /* extern "C" */
110
111 #endif /* LLVM_C_ORCBINDINGS_H */