lldb/source/Plugins/ABI/SystemZ/ABISysV_s390x.h

   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