1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
//===-- MCJIT.h - Class definition for the MCJIT ----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_EXECUTIONENGINE_MCJIT_H
#define LLVM_LIB_EXECUTIONENGINE_MCJIT_H
#include "llvm/PassManager.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/RuntimeDyld.h"
namespace llvm {
class ObjectImage;
// FIXME: This makes all kinds of horrible assumptions for the time being,
// like only having one module, not needing to worry about multi-threading,
// blah blah. Purely in get-it-up-and-limping mode for now.
class MCJIT : public ExecutionEngine {
MCJIT(Module *M, TargetMachine *tm, RTDyldMemoryManager *MemMgr,
bool AllocateGVsWithCode);
TargetMachine *TM;
MCContext *Ctx;
RTDyldMemoryManager *MemMgr;
RuntimeDyld Dyld;
// FIXME: Add support for multiple modules
bool isCompiled;
Module *M;
OwningPtr<ObjectImage> LoadedObject;
public:
~MCJIT();
/// @name ExecutionEngine interface implementation
/// @{
virtual void finalizeObject();
virtual void *getPointerToBasicBlock(BasicBlock *BB);
virtual void *getPointerToFunction(Function *F);
virtual void *recompileAndRelinkFunction(Function *F);
virtual void freeMachineCodeForFunction(Function *F);
virtual GenericValue runFunction(Function *F,
const std::vector<GenericValue> &ArgValues);
/// getPointerToNamedFunction - This method returns the address of the
/// specified function by using the dlsym function call. As such it is only
/// useful for resolving library symbols, not code generated symbols.
///
/// If AbortOnFailure is false and no function with the given name is
/// found, this function silently returns a null pointer. Otherwise,
/// it prints a message to stderr and aborts.
///
virtual void *getPointerToNamedFunction(const std::string &Name,
bool AbortOnFailure = true);
/// mapSectionAddress - map a section to its target address space value.
/// Map the address of a JIT section as returned from the memory manager
/// to the address in the target process as the running code will see it.
/// This is the address which will be used for relocation resolution.
virtual void mapSectionAddress(const void *LocalAddress,
uint64_t TargetAddress) {
Dyld.mapSectionAddress(LocalAddress, TargetAddress);
}
/// @}
/// @name (Private) Registration Interfaces
/// @{
static void Register() {
MCJITCtor = createJIT;
}
static ExecutionEngine *createJIT(Module *M,
std::string *ErrorStr,
JITMemoryManager *JMM,
bool GVsWithCode,
TargetMachine *TM);
// @}
protected:
/// emitObject -- Generate a JITed object in memory from the specified module
/// Currently, MCJIT only supports a single module and the module passed to
/// this function call is expected to be the contained module. The module
/// is passed as a parameter here to prepare for multiple module support in
/// the future.
void emitObject(Module *M);
};
} // End llvm namespace
#endif
|
