ABISysV_mips.h revision 360784 
1//===-- ABISysV_mips.h ----------------------------------------*- 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 liblldb_ABISysV_mips_h_
10#define liblldb_ABISysV_mips_h_
11
12#include "lldb/Target/ABI.h"
13#include "lldb/lldb-private.h"
14
15class ABISysV_mips : public lldb_private::ABI {
16public:
17  ~ABISysV_mips() override = default;
18
19  size_t GetRedZoneSize() const override;
20
21  bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
22                          lldb::addr_t functionAddress,
23                          lldb::addr_t returnAddress,
24                          llvm::ArrayRef<lldb::addr_t> args) const override;
25
26  bool GetArgumentValues(lldb_private::Thread &thread,
27                         lldb_private::ValueList &values) const override;
28
29  lldb_private::Status
30  SetReturnValueObject(lldb::StackFrameSP &frame_sp,
31                       lldb::ValueObjectSP &new_value) override;
32
33  lldb::ValueObjectSP
34  GetReturnValueObjectImpl(lldb_private::Thread &thread,
35                           lldb_private::CompilerType &type) const override;
36
37  bool
38  CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
39
40  bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
41
42  bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
43
44  bool IsSoftFloat(uint32_t fp_flag) const;
45
46  bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
47    // Make sure the stack call frame addresses are 8 byte aligned
48    if (cfa & (8ull - 1ull))
49      return false; // Not 8 byte aligned
50    if (cfa == 0)
51      return false; // Zero is not a valid stack address
52    return true;
53  }
54
55  bool CodeAddressIsValid(lldb::addr_t pc) override {
56    // Just make sure the address is a valid 32 bit address. Bit zero
57    // might be set due to MicroMIPS function calls, so don't enforce alignment.
58    return (pc <= UINT32_MAX);
59  }
60
61  const lldb_private::RegisterInfo *
62  GetRegisterInfoArray(uint32_t &count) override;
63
64  // Static Functions
65
66  static void Initialize();
67
68  static void Terminate();
69
70  static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
71
72  static lldb_private::ConstString GetPluginNameStatic();
73
74  // PluginInterface protocol
75
76  lldb_private::ConstString GetPluginName() override;
77
78  uint32_t GetPluginVersion() override;
79
80protected:
81  void CreateRegisterMapIfNeeded();
82
83  lldb::ValueObjectSP
84  GetReturnValueObjectSimple(lldb_private::Thread &thread,
85                             lldb_private::CompilerType &ast_type) const;
86
87  bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
88
89private:
90  ABISysV_mips(lldb::ProcessSP process_sp,
91               std::unique_ptr<llvm::MCRegisterInfo> info_up)
92      : lldb_private::ABI(std::move(process_sp), std::move(info_up)) {
93    // Call CreateInstance instead.
94  }
95};
96
97#endif // liblldb_ABISysV_mips_h_
98