ABISysV_hexagon.h revision 360784 
1//===-- ABISysV_hexagon.h ----------------------------------------*- C++
2//-*-===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef liblldb_ABISysV_hexagon_h_
11#define liblldb_ABISysV_hexagon_h_
12
13#include "lldb/Target/ABI.h"
14#include "lldb/lldb-private.h"
15
16class ABISysV_hexagon : public lldb_private::ABI {
17public:
18  ~ABISysV_hexagon() override = default;
19
20  size_t GetRedZoneSize() const override;
21
22  bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
23                          lldb::addr_t functionAddress,
24                          lldb::addr_t returnAddress,
25                          llvm::ArrayRef<lldb::addr_t> args) const override;
26
27  // special thread plan for GDB style non-jit function calls
28  bool
29  PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
30                     lldb::addr_t functionAddress, lldb::addr_t returnAddress,
31                     llvm::Type &prototype,
32                     llvm::ArrayRef<ABI::CallArgument> args) const override;
33
34  bool GetArgumentValues(lldb_private::Thread &thread,
35                         lldb_private::ValueList &values) const override;
36
37  lldb_private::Status
38  SetReturnValueObject(lldb::StackFrameSP &frame_sp,
39                       lldb::ValueObjectSP &new_value) override;
40
41  lldb::ValueObjectSP
42  GetReturnValueObjectImpl(lldb_private::Thread &thread,
43                           lldb_private::CompilerType &type) const override;
44
45  // specialized to work with llvm IR types
46  lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread,
47                                               llvm::Type &type) const override;
48
49  bool
50  CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
51
52  bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
53
54  bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
55
56  bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
57    // Make sure the stack call frame addresses are 8 byte aligned
58    if (cfa & 0x07)
59      return false; // Not 8 byte aligned
60    if (cfa == 0)
61      return false; // Zero is not a valid stack address
62    return true;
63  }
64
65  bool CodeAddressIsValid(lldb::addr_t pc) override {
66    // We have a 64 bit address space, so anything is valid as opcodes
67    // aren't fixed width...
68    return true;
69  }
70
71  const lldb_private::RegisterInfo *
72  GetRegisterInfoArray(uint32_t &count) override;
73
74  // Static Functions
75
76  static void Initialize();
77
78  static void Terminate();
79
80  static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
81
82  static lldb_private::ConstString GetPluginNameStatic();
83
84  // PluginInterface protocol
85
86  lldb_private::ConstString GetPluginName() override;
87
88  uint32_t GetPluginVersion() override;
89
90protected:
91  void CreateRegisterMapIfNeeded();
92
93  lldb::ValueObjectSP
94  GetReturnValueObjectSimple(lldb_private::Thread &thread,
95                             lldb_private::CompilerType &ast_type) const;
96
97  bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
98
99private:
100  ABISysV_hexagon(lldb::ProcessSP process_sp,
101                  std::unique_ptr<llvm::MCRegisterInfo> info_up)
102      : lldb_private::ABI(std::move(process_sp), std::move(info_up)) {
103    // Call CreateInstance instead.
104  }
105};
106
107#endif // liblldb_ABISysV_hexagon_h_
108