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 15 class ABIMacOSX_arm : public lldb_private::RegInfoBasedABI { 16 public: 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 bool 33 CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; 34 35 bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; 36 37 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override; 38 CallFrameAddressIsValid(lldb::addr_t cfa)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 43 if (cfa == 0) 44 return false; // Zero is not a valid stack address 45 return true; 46 } 47 CodeAddressIsValid(lldb::addr_t pc)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 51 // alignment 52 return pc <= UINT32_MAX; 53 } 54 FixCodeAddress(lldb::addr_t pc)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; 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 74 static lldb_private::ConstString GetPluginNameStatic(); 75 76 // PluginInterface protocol 77 78 lldb_private::ConstString GetPluginName() override; 79 80 uint32_t GetPluginVersion() override; 81 82 protected: 83 lldb::ValueObjectSP 84 GetReturnValueObjectImpl(lldb_private::Thread &thread, 85 lldb_private::CompilerType &ast_type) const override; 86 87 private: 88 using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead. 89 }; 90 91 #endif // LLDB_SOURCE_PLUGINS_ABI_ARM_ABIMACOSX_ARM_H 92