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1//===-- ABISysV_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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLDB_SOURCE_PLUGINS_ABI_ARM_ABISYSV_ARM_H10#define LLDB_SOURCE_PLUGINS_ABI_ARM_ABISYSV_ARM_H11 12#include "lldb/Target/ABI.h"13#include "lldb/lldb-private.h"14 15class ABISysV_arm : public lldb_private::RegInfoBasedABI {16public:17 ~ABISysV_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::Status29 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 aligned40 if (cfa & (4ull - 1ull))41 return false; // Not 4 byte aligned42 if (cfa == 0)43 return false; // Zero is not a valid stack address44 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 zero49 // might be set due to Thumb function calls, so don't enforce 2 byte50 // alignment51 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 must56 // 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 IsArmHardFloat(lldb_private::Thread &thread) const;64 65 // Static Functions66 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 "SysV-arm"; }74 75 // PluginInterface protocol76 77 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }78 79protected:80 lldb::ValueObjectSP81 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_ABISYSV_ARM_H89