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 #include <string>
14 
15 #define DEBUG_TYPE "dyld"
16 
17 namespace llvm {
18 
19 class RuntimeDyldELFMips : public RuntimeDyldELF {
20 public:
21 
22   typedef uint64_t TargetPtrT;
23 
24   RuntimeDyldELFMips(RuntimeDyld::MemoryManager &MM,
25                      JITSymbolResolver &Resolver)
26       : RuntimeDyldELF(MM, Resolver) {}
27 
28   void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override;
29 
30 protected:
31   void resolveMIPSO32Relocation(const SectionEntry &Section, uint64_t Offset,
32                                 uint32_t Value, uint32_t Type, int32_t Addend);
33   void resolveMIPSN32Relocation(const SectionEntry &Section, uint64_t Offset,
34                                 uint64_t Value, uint32_t Type, int64_t Addend,
35                                 uint64_t SymOffset, SID SectionID);
36   void resolveMIPSN64Relocation(const SectionEntry &Section, uint64_t Offset,
37                                 uint64_t Value, uint32_t Type, int64_t Addend,
38                                 uint64_t SymOffset, SID SectionID);
39 
40 private:
41   /// A object file specific relocation resolver
42   /// \param RE The relocation to be resolved
43   /// \param Value Target symbol address to apply the relocation action
44   uint64_t evaluateRelocation(const RelocationEntry &RE, uint64_t Value,
45                               uint64_t Addend);
46 
47   /// A object file specific relocation resolver
48   /// \param RE The relocation to be resolved
49   /// \param Value Target symbol address to apply the relocation action
50   void applyRelocation(const RelocationEntry &RE, uint64_t Value);
51 
52   int64_t evaluateMIPS32Relocation(const SectionEntry &Section, uint64_t Offset,
53                                    uint64_t Value, uint32_t Type);
54   int64_t evaluateMIPS64Relocation(const SectionEntry &Section,
55                                    uint64_t Offset, uint64_t Value,
56                                    uint32_t Type,  int64_t Addend,
57                                    uint64_t SymOffset, SID SectionID);
58 
59   void applyMIPSRelocation(uint8_t *TargetPtr, int64_t CalculatedValue,
60                            uint32_t Type);
61 
62 };
63 }
64 
65 #undef DEBUG_TYPE
66 
67 #endif
68