1 //===-- RuntimeDyldELFMips.h ---- ELF/Mips specific code. -------*- 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 #ifndef LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_TARGETS_RUNTIMEDYLDELFMIPS_H
10 #define LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_TARGETS_RUNTIMEDYLDELFMIPS_H
11 
12 #include "../RuntimeDyldELF.h"
13 
14 #define DEBUG_TYPE "dyld"
15 
16 namespace llvm {
17 
18 class RuntimeDyldELFMips : public RuntimeDyldELF {
19 public:
20 
21   typedef uint64_t TargetPtrT;
22 
23   RuntimeDyldELFMips(RuntimeDyld::MemoryManager &MM,
24                      JITSymbolResolver &Resolver)
25       : RuntimeDyldELF(MM, Resolver) {}
26 
27   void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override;
28 
29 protected:
30   void resolveMIPSO32Relocation(const SectionEntry &Section, uint64_t Offset,
31                                 uint32_t Value, uint32_t Type, int32_t Addend);
32   void resolveMIPSN32Relocation(const SectionEntry &Section, uint64_t Offset,
33                                 uint64_t Value, uint32_t Type, int64_t Addend,
34                                 uint64_t SymOffset, SID SectionID);
35   void resolveMIPSN64Relocation(const SectionEntry &Section, uint64_t Offset,
36                                 uint64_t Value, uint32_t Type, int64_t Addend,
37                                 uint64_t SymOffset, SID SectionID);
38 
39 private:
40   /// A object file specific relocation resolver
41   /// \param RE The relocation to be resolved
42   /// \param Value Target symbol address to apply the relocation action
43   uint64_t evaluateRelocation(const RelocationEntry &RE, uint64_t Value,
44                               uint64_t Addend);
45 
46   /// A object file specific relocation resolver
47   /// \param RE The relocation to be resolved
48   /// \param Value Target symbol address to apply the relocation action
49   void applyRelocation(const RelocationEntry &RE, uint64_t Value);
50 
51   int64_t evaluateMIPS32Relocation(const SectionEntry &Section, uint64_t Offset,
52                                    uint64_t Value, uint32_t Type);
53   int64_t evaluateMIPS64Relocation(const SectionEntry &Section,
54                                    uint64_t Offset, uint64_t Value,
55                                    uint32_t Type,  int64_t Addend,
56                                    uint64_t SymOffset, SID SectionID);
57 
58   void applyMIPSRelocation(uint8_t *TargetPtr, int64_t CalculatedValue,
59                            uint32_t Type);
60 
61 };
62 }
63 
64 #undef DEBUG_TYPE
65 
66 #endif
67