1 //===-- ABIMacOSX_arm.h ----------------------------------------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 #ifndef liblldb_ABIMacOSX_arm_h_
10 #define liblldb_ABIMacOSX_arm_h_
12 #include "lldb/Target/ABI.h"
13 #include "lldb/lldb-private.h"
15 class ABIMacOSX_arm : public lldb_private::ABI {
17 ~ABIMacOSX_arm() override = default;
19 size_t GetRedZoneSize() const override;
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;
25 bool GetArgumentValues(lldb_private::Thread &thread,
26 lldb_private::ValueList &values) const override;
29 SetReturnValueObject(lldb::StackFrameSP &frame_sp,
30 lldb::ValueObjectSP &new_value) override;
33 CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
35 bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
37 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
39 bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
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
44 return false; // Zero is not a valid stack address
48 bool CodeAddressIsValid(lldb::addr_t pc) override {
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
52 return pc <= UINT32_MAX;
55 lldb::addr_t FixCodeAddress(lldb::addr_t pc) override {
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;
61 const lldb_private::RegisterInfo *
62 GetRegisterInfoArray(uint32_t &count) override;
64 bool IsArmv7kProcess() const;
68 static void Initialize();
70 static void Terminate();
72 static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
74 static lldb_private::ConstString GetPluginNameStatic();
76 // PluginInterface protocol
78 lldb_private::ConstString GetPluginName() override;
80 uint32_t GetPluginVersion() override;
84 GetReturnValueObjectImpl(lldb_private::Thread &thread,
85 lldb_private::CompilerType &ast_type) const override;
88 ABIMacOSX_arm(lldb::ProcessSP process_sp,
89 std::unique_ptr<llvm::MCRegisterInfo> info_up)
90 : lldb_private::ABI(std::move(process_sp), std::move(info_up)) {
91 // Call CreateInstance instead.
95 #endif // liblldb_ABIMacOSX_arm_h_