1 //===--- ELF_x86_64.h - JIT link functions for ELF/x86-64 ---*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // jit-link functions for ELF/x86-64.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_EXECUTIONENGINE_JITLINK_ELF_X86_64_H
14 #define LLVM_EXECUTIONENGINE_JITLINK_ELF_X86_64_H
15 
16 #include "llvm/ExecutionEngine/JITLink/JITLink.h"
17 
18 namespace llvm {
19 namespace jitlink {
20 
21 namespace ELF_x86_64_Edges {
22 enum ELFX86RelocationKind : Edge::Kind {
23   Branch32 = Edge::FirstRelocation,
24   Branch32ToStub,
25   Pointer32,
26   Pointer64,
27   Pointer64Anon,
28   PCRel32,
29   PCRel64,
30   PCRel32Minus1,
31   PCRel32Minus2,
32   PCRel32Minus4,
33   PCRel32Anon,
34   PCRel32Minus1Anon,
35   PCRel32Minus2Anon,
36   PCRel32Minus4Anon,
37   PCRel32GOTLoad,
38   PCRel32GOT,
39   PCRel64GOT,
40   GOTOFF64,
41   GOT64,
42   PCRel32TLV,
43   Delta32,
44   Delta64,
45   NegDelta32,
46   NegDelta64,
47 };
48 
49 } // end namespace ELF_x86_64_Edges
50 
51 /// Create a LinkGraph from an ELF/x86-64 relocatable object.
52 ///
53 /// Note: The graph does not take ownership of the underlying buffer, nor copy
54 /// its contents. The caller is responsible for ensuring that the object buffer
55 /// outlives the graph.
56 Expected<std::unique_ptr<LinkGraph>>
57 createLinkGraphFromELFObject_x86_64(MemoryBufferRef ObjectBuffer);
58 
59 /// jit-link the given object buffer, which must be a ELF x86-64 object file.
60 void link_ELF_x86_64(std::unique_ptr<LinkGraph> G,
61                      std::unique_ptr<JITLinkContext> Ctx);
62 
63 /// Return the string name of the given ELF x86-64 edge kind.
64 const char *getELFX86RelocationKindName(Edge::Kind R);
65 } // end namespace jitlink
66 } // end namespace llvm
67 
68 #endif // LLVM_EXECUTIONENGINE_JITLINK_ELF_X86_64_H
69