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ABIMacOSX_arm.h
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1 //===-- ABIMacOSX_arm.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_ABIMacOSX_arm_h_
10 #define liblldb_ABIMacOSX_arm_h_
11 
12 #include "lldb/Target/ABI.h"
13 #include "lldb/lldb-private.h"
14 
16 public:
17  ~ABIMacOSX_arm() override = default;
18 
19  size_t GetRedZoneSize() const override;
20 
22  lldb::addr_t func_addr, lldb::addr_t returnAddress,
23  llvm::ArrayRef<lldb::addr_t> args) const override;
24 
26  lldb_private::ValueList &values) const override;
27 
29  SetReturnValueObject(lldb::StackFrameSP &frame_sp,
30  lldb::ValueObjectSP &new_value) override;
31 
32  bool
34 
35  bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
36 
37  bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
38 
40  // Make sure the stack call frame addresses are are 4 byte aligned
41  if (cfa & (4ull - 1ull))
42  return false; // Not 4 byte aligned
43  if (cfa == 0)
44  return false; // Zero is not a valid stack address
45  return true;
46  }
47 
49  // Just make sure the address is a valid 32 bit address. Bit zero
50  // might be set due to Thumb function calls, so don't enforce 2 byte
51  // alignment
52  return pc <= UINT32_MAX;
53  }
54 
56  // ARM uses bit zero to signify a code address is thumb, so we must
57  // strip bit zero in any code addresses.
58  return pc & ~(lldb::addr_t)1;
59  }
60 
61  const lldb_private::RegisterInfo *
62  GetRegisterInfoArray(uint32_t &count) override;
63 
64  bool IsArmv7kProcess() const;
65 
66  // Static Functions
67 
68  static void Initialize();
69 
70  static void Terminate();
71 
72  static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
73 
75 
76  // PluginInterface protocol
77 
79 
80  uint32_t GetPluginVersion() override;
81 
82 protected:
83  lldb::ValueObjectSP
85  lldb_private::CompilerType &ast_type) const override;
86 
87 private:
88  ABIMacOSX_arm(lldb::ProcessSP process_sp) : lldb_private::ABI(process_sp) {
89  // Call CreateInstance instead.
90  }
91 };
92 
93 #endif // liblldb_ABIMacOSX_arm_h_
uint32_t GetPluginVersion() override
static void Terminate()
static void Initialize()
static lldb_private::ConstString GetPluginNameStatic()
An architecture specification class.
Definition: ArchSpec.h:32
bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp, lldb::addr_t func_addr, lldb::addr_t returnAddress, llvm::ArrayRef< lldb::addr_t > args) const override
lldb_private::ConstString GetPluginName() override
size_t GetRedZoneSize() const override
lldb::addr_t FixCodeAddress(lldb::addr_t pc) override
Definition: ABIMacOSX_arm.h:55
~ABIMacOSX_arm() override=default
const lldb_private::RegisterInfo * GetRegisterInfoArray(uint32_t &count) override
#define UINT32_MAX
Definition: lldb-defines.h:31
bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override
static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch)
bool GetArgumentValues(lldb_private::Thread &thread, lldb_private::ValueList &values) const override
bool CodeAddressIsValid(lldb::addr_t pc) override
Definition: ABIMacOSX_arm.h:48
bool CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override
uint64_t addr_t
Definition: lldb-types.h:83
A uniqued constant string class.
Definition: ConstString.h:38
lldb_private::Status SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value) override
lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread, lldb_private::CompilerType &ast_type) const override
bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override
bool CallFrameAddressIsValid(lldb::addr_t cfa) override
Definition: ABIMacOSX_arm.h:39
bool IsArmv7kProcess() const
An error handling class.
Definition: Status.h:44