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   PCRel32Minus1,
30   PCRel32Minus2,
31   PCRel32Minus4,
32   PCRel32Anon,
33   PCRel32Minus1Anon,
34   PCRel32Minus2Anon,
35   PCRel32Minus4Anon,
36   PCRel32GOTLoad,
37   PCRel32GOT,
38   PCRel32TLV,
39   Delta32,
40   Delta64,
41   NegDelta32,
42   NegDelta64,
43 };
44 
45 } // end namespace ELF_x86_64_Edges
46 
47 /// Create a LinkGraph from an ELF/x86-64 relocatable object.
48 ///
49 /// Note: The graph does not take ownership of the underlying buffer, nor copy
50 /// its contents. The caller is responsible for ensuring that the object buffer
51 /// outlives the graph.
52 Expected<std::unique_ptr<LinkGraph>>
53 createLinkGraphFromELFObject_x86_64(MemoryBufferRef ObjectBuffer);
54 
55 /// jit-link the given object buffer, which must be a ELF x86-64 object file.
56 void link_ELF_x86_64(std::unique_ptr<LinkGraph> G,
57                      std::unique_ptr<JITLinkContext> Ctx);
58 
59 /// Return the string name of the given ELF x86-64 edge kind.
60 StringRef getELFX86RelocationKindName(Edge::Kind R);
61 } // end namespace jitlink
62 } // end namespace llvm
63 
64 #endif // LLVM_EXECUTIONENGINE_JITLINK_ELF_X86_64_H
65