1//===-- ABIWindows_x86_64.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_X86_ABIWINDOWS_X86_64_H
10#define LLDB_SOURCE_PLUGINS_ABI_X86_ABIWINDOWS_X86_64_H
11
12#include "Plugins/ABI/X86/ABIX86_64.h"
13
14class ABIWindows_x86_64 : public ABIX86_64 {
15public:
16 ~ABIWindows_x86_64() override = default;
17
18 size_t GetRedZoneSize() const override;
19
20 bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
21 lldb::addr_t functionAddress,
22 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::ValueObjectSP
33 GetReturnValueObjectImpl(lldb_private::Thread &thread,
34 lldb_private::CompilerType &type) const override;
35
36 bool
37 CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
38
39 bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
40
41 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
42
43 // In Windows_x86_64 ABI requires that the stack will be maintained 16-byte
44 // aligned.
45 // When ntdll invokes callbacks such as KiUserExceptionDispatcher or
46 // KiUserCallbackDispatcher, those functions won't have a properly 16-byte
47 // aligned stack - but tolerate unwinding through them by relaxing the
48 // requirement to 8 bytes.
49 bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
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 // We have a 64 bit address space, so anything is valid as opcodes
59 // aren't fixed width...
60 return true;
61 }
62
63 bool GetPointerReturnRegister(const char *&name) override;
64
65 //------------------------------------------------------------------
66 // Static Functions
67 //------------------------------------------------------------------
68
69 static void Initialize();
70
71 static void Terminate();
72
73 static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
74
75 static llvm::StringRef GetPluginNameStatic() { return "windows-x86_64"; }
76
77 //------------------------------------------------------------------
78 // PluginInterface protocol
79 //------------------------------------------------------------------
80
81 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
82
83protected:
84 void CreateRegisterMapIfNeeded();
85
86 lldb::ValueObjectSP
87 GetReturnValueObjectSimple(lldb_private::Thread &thread,
88 lldb_private::CompilerType &ast_type) const;
89
90 bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
91 uint32_t GetGenericNum(llvm::StringRef reg) override;
92
93private:
94 using ABIX86_64::ABIX86_64; // Call CreateInstance instead.
95};
96
97#endif // LLDB_SOURCE_PLUGINS_ABI_X86_ABIWINDOWS_X86_64_H
98

source code of lldb/source/Plugins/ABI/X86/ABIWindows_x86_64.h