ABISysV_s390x.h revision 360784 
1//===-- ABISysV_s390x.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_s390x_h_
10#define liblldb_ABISysV_s390x_h_
11
12#include "lldb/Target/ABI.h"
13#include "lldb/lldb-private.h"
14
15class ABISysV_s390x : public lldb_private::ABI {
16public:
17  ~ABISysV_s390x() 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 GetFallbackRegisterLocation(
45      const lldb_private::RegisterInfo *reg_info,
46      lldb_private::UnwindPlan::Row::RegisterLocation &unwind_regloc) override;
47
48  bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
49    // Make sure the stack call frame addresses are 8 byte aligned
50    if (cfa & (8ull - 1ull))
51      return false; // Not 8 byte aligned
52    if (cfa == 0)
53      return false; // Zero is not a valid stack address
54    return true;
55  }
56
57  bool CodeAddressIsValid(lldb::addr_t pc) override {
58    // Code addressed must be 2 byte aligned
59    return (pc & 1ull) == 0;
60  }
61
62  const lldb_private::RegisterInfo *
63  GetRegisterInfoArray(uint32_t &count) override;
64
65  // Static Functions
66
67  static void Initialize();
68
69  static void Terminate();
70
71  static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
72
73  static lldb_private::ConstString GetPluginNameStatic();
74
75  // PluginInterface protocol
76
77  lldb_private::ConstString GetPluginName() override;
78
79  uint32_t GetPluginVersion() override;
80
81protected:
82  void CreateRegisterMapIfNeeded();
83
84  lldb::ValueObjectSP
85  GetReturnValueObjectSimple(lldb_private::Thread &thread,
86                             lldb_private::CompilerType &ast_type) const;
87
88  bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
89
90private:
91  ABISysV_s390x(lldb::ProcessSP process_sp,
92                std::unique_ptr<llvm::MCRegisterInfo> info_up)
93      : lldb_private::ABI(std::move(process_sp), std::move(info_up)) {
94    // Call CreateInstance instead.
95  }
96};
97
98#endif // liblldb_ABISysV_s390x_h_
99