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 lldb::UnwindPlanSP CreateFunctionEntryUnwindPlan() override;
37
38 lldb::UnwindPlanSP CreateDefaultUnwindPlan() override;
39
40 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
41
42 // In Windows_x86_64 ABI requires that the stack will be maintained 16-byte
43 // aligned.
44 // When ntdll invokes callbacks such as KiUserExceptionDispatcher or
45 // KiUserCallbackDispatcher, those functions won't have a properly 16-byte
46 // aligned stack - but tolerate unwinding through them by relaxing the
47 // requirement to 8 bytes.
48 bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
49 if (cfa & (8ull - 1ull))
50 return false; // Not 8 byte aligned
51 if (cfa == 0)
52 return false; // Zero is not a valid stack address
53 return true;
54 }
55
56 bool CodeAddressIsValid(lldb::addr_t pc) override {
57 // We have a 64 bit address space, so anything is valid as opcodes
58 // aren't fixed width...
59 return true;
60 }
61
62 bool GetPointerReturnRegister(const char *&name) override;
63
64 //------------------------------------------------------------------
65 // Static Functions
66 //------------------------------------------------------------------
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
74 static llvm::StringRef GetPluginNameStatic() { return "windows-x86_64"; }
75
76 //------------------------------------------------------------------
77 // PluginInterface protocol
78 //------------------------------------------------------------------
79
80 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
81
82protected:
83 void CreateRegisterMapIfNeeded();
84
85 lldb::ValueObjectSP
86 GetReturnValueObjectSimple(lldb_private::Thread &thread,
87 lldb_private::CompilerType &ast_type) const;
88
89 bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
90 uint32_t GetGenericNum(llvm::StringRef reg) override;
91
92private:
93 using ABIX86_64::ABIX86_64; // Call CreateInstance instead.
94};
95
96#endif // LLDB_SOURCE_PLUGINS_ABI_X86_ABIWINDOWS_X86_64_H
97

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