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 LLDB_SOURCE_PLUGINS_ABI_ARM_ABIMACOSX_ARM_H
10#define LLDB_SOURCE_PLUGINS_ABI_ARM_ABIMACOSX_ARM_H
11
12#include "lldb/Target/ABI.h"
13#include "lldb/lldb-private.h"
14
15class ABIMacOSX_arm : public lldb_private::RegInfoBasedABI {
16public:
17 ~ABIMacOSX_arm() 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 func_addr, lldb::addr_t returnAddress,
23 llvm::ArrayRef<lldb::addr_t> args) const override;
24
25 bool GetArgumentValues(lldb_private::Thread &thread,
26 lldb_private::ValueList &values) const override;
27
28 lldb_private::Status
29 SetReturnValueObject(lldb::StackFrameSP &frame_sp,
30 lldb::ValueObjectSP &new_value) override;
31
32 lldb::UnwindPlanSP CreateFunctionEntryUnwindPlan() override;
33
34 lldb::UnwindPlanSP CreateDefaultUnwindPlan() override;
35
36 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
37
38 bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
39 // Make sure the stack call frame addresses are 4 byte aligned
40 if (cfa & (4ull - 1ull))
41 return false; // Not 4 byte aligned
42 if (cfa == 0)
43 return false; // Zero is not a valid stack address
44 return true;
45 }
46
47 bool CodeAddressIsValid(lldb::addr_t pc) override {
48 // Just make sure the address is a valid 32 bit address. Bit zero
49 // might be set due to Thumb function calls, so don't enforce 2 byte
50 // alignment
51 return pc <= UINT32_MAX;
52 }
53
54 lldb::addr_t FixCodeAddress(lldb::addr_t pc) override {
55 // ARM uses bit zero to signify a code address is thumb, so we must
56 // strip bit zero in any code addresses.
57 return pc & ~(lldb::addr_t)1;
58 }
59
60 const lldb_private::RegisterInfo *
61 GetRegisterInfoArray(uint32_t &count) override;
62
63 bool IsArmv7kProcess() const;
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 llvm::StringRef GetPluginNameStatic() { return "macosx-arm"; }
74
75 // PluginInterface protocol
76
77 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
78
79protected:
80 lldb::ValueObjectSP
81 GetReturnValueObjectImpl(lldb_private::Thread &thread,
82 lldb_private::CompilerType &ast_type) const override;
83
84private:
85 using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead.
86};
87
88#endif // LLDB_SOURCE_PLUGINS_ABI_ARM_ABIMACOSX_ARM_H
89

source code of lldb/source/Plugins/ABI/ARM/ABIMacOSX_arm.h