1 //===-- ABISysV_mips.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_MIPS_ABISYSV_MIPS_H 10 #define LLDB_SOURCE_PLUGINS_ABI_MIPS_ABISYSV_MIPS_H 11 12 #include "lldb/Target/ABI.h" 13 #include "lldb/lldb-private.h" 14 15 class ABISysV_mips : public lldb_private::RegInfoBasedABI { 16 public: 17 ~ABISysV_mips() 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 functionAddress, 23 lldb::addr_t returnAddress, 24 llvm::ArrayRef<lldb::addr_t> args) const override; 25 26 bool GetArgumentValues(lldb_private::Thread &thread, 27 lldb_private::ValueList &values) const override; 28 29 lldb_private::Status 30 SetReturnValueObject(lldb::StackFrameSP &frame_sp, 31 lldb::ValueObjectSP &new_value) override; 32 33 lldb::ValueObjectSP 34 GetReturnValueObjectImpl(lldb_private::Thread &thread, 35 lldb_private::CompilerType &type) const override; 36 37 bool 38 CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; 39 40 bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override; 41 42 bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override; 43 44 bool IsSoftFloat(uint32_t fp_flag) const; 45 CallFrameAddressIsValid(lldb::addr_t cfa)46 bool CallFrameAddressIsValid(lldb::addr_t cfa) override { 47 // Make sure the stack call frame addresses are 8 byte aligned 48 if (cfa & (8ull - 1ull)) 49 return false; // Not 8 byte aligned 50 if (cfa == 0) 51 return false; // Zero is not a valid stack address 52 return true; 53 } 54 CodeAddressIsValid(lldb::addr_t pc)55 bool CodeAddressIsValid(lldb::addr_t pc) override { 56 // Just make sure the address is a valid 32 bit address. Bit zero 57 // might be set due to MicroMIPS function calls, so don't enforce alignment. 58 return (pc <= UINT32_MAX); 59 } 60 61 const lldb_private::RegisterInfo * 62 GetRegisterInfoArray(uint32_t &count) override; 63 64 // Static Functions 65 66 static void Initialize(); 67 68 static void Terminate(); 69 70 static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch); 71 72 static lldb_private::ConstString GetPluginNameStatic(); 73 74 // PluginInterface protocol 75 76 lldb_private::ConstString GetPluginName() override; 77 78 uint32_t GetPluginVersion() override; 79 80 protected: 81 void CreateRegisterMapIfNeeded(); 82 83 lldb::ValueObjectSP 84 GetReturnValueObjectSimple(lldb_private::Thread &thread, 85 lldb_private::CompilerType &ast_type) const; 86 87 bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info); 88 89 private: 90 using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead. 91 }; 92 93 #endif // LLDB_SOURCE_PLUGINS_ABI_MIPS_ABISYSV_MIPS_H 94