1 //===-- ABISysV_s390x.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_SYSTEMZ_ABISYSV_S390X_H 10 #define LLDB_SOURCE_PLUGINS_ABI_SYSTEMZ_ABISYSV_S390X_H 11 12 #include "lldb/Target/ABI.h" 13 #include "lldb/lldb-private.h" 14 15 class ABISysV_s390x : public lldb_private::RegInfoBasedABI { 16 public: 17 ~ABISysV_s390x() 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 GetFallbackRegisterLocation( 45 const lldb_private::RegisterInfo *reg_info, 46 lldb_private::UnwindPlan::Row::RegisterLocation &unwind_regloc) override; 47 48 bool CallFrameAddressIsValid(lldb::addr_t cfa) override { 49 // Make sure the stack call frame addresses are 8 byte aligned 50 if (cfa & (8ull - 1ull)) 51 return false; // Not 8 byte aligned 52 if (cfa == 0) 53 return false; // Zero is not a valid stack address 54 return true; 55 } 56 57 bool CodeAddressIsValid(lldb::addr_t pc) override { 58 // Code addressed must be 2 byte aligned 59 return (pc & 1ull) == 0; 60 } 61 62 const lldb_private::RegisterInfo * 63 GetRegisterInfoArray(uint32_t &count) override; 64 65 // Static Functions 66 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-s390x"; } 74 75 // PluginInterface protocol 76 77 llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); } 78 79 protected: 80 void CreateRegisterMapIfNeeded(); 81 82 lldb::ValueObjectSP 83 GetReturnValueObjectSimple(lldb_private::Thread &thread, 84 lldb_private::CompilerType &ast_type) const; 85 86 bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info); 87 88 private: 89 using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead. 90 }; 91 92 #endif // LLDB_SOURCE_PLUGINS_ABI_SYSTEMZ_ABISYSV_S390X_H 93