contrib/llvm-project/lldb/source/Plugins/ABI/SysV-hexagon/ABISysV_hexagon.h

   1 //===-- ABISysV_hexagon.h ----------------------------------------*- C++
   2 //-*-===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef liblldb_ABISysV_hexagon_h_
  11 #define liblldb_ABISysV_hexagon_h_
  12
  13 #include "lldb/Target/ABI.h"
  14 #include "lldb/lldb-private.h"
  15
  16 class ABISysV_hexagon : public lldb_private::ABI {
  17 public:
  18   ~ABISysV_hexagon() override = default;
  19
  20   size_t GetRedZoneSize() const override;
  21
  22   bool PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
  23                           lldb::addr_t functionAddress,
  24                           lldb::addr_t returnAddress,
  25                           llvm::ArrayRef<lldb::addr_t> args) const override;
  26
  27   // special thread plan for GDB style non-jit function calls
  28   bool
  29   PrepareTrivialCall(lldb_private::Thread &thread, lldb::addr_t sp,
  30                      lldb::addr_t functionAddress, lldb::addr_t returnAddress,
  31                      llvm::Type &prototype,
  32                      llvm::ArrayRef<ABI::CallArgument> args) const override;
  33
  34   bool GetArgumentValues(lldb_private::Thread &thread,
  35                          lldb_private::ValueList &values) const override;
  36
  37   lldb_private::Status
  38   SetReturnValueObject(lldb::StackFrameSP &frame_sp,
  39                        lldb::ValueObjectSP &new_value) override;
  40
  41   lldb::ValueObjectSP
  42   GetReturnValueObjectImpl(lldb_private::Thread &thread,
  43                            lldb_private::CompilerType &type) const override;
  44
  45   // specialized to work with llvm IR types
  46   lldb::ValueObjectSP GetReturnValueObjectImpl(lldb_private::Thread &thread,
  47                                                llvm::Type &type) const override;
  48
  49   bool
  50   CreateFunctionEntryUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  51
  52   bool CreateDefaultUnwindPlan(lldb_private::UnwindPlan &unwind_plan) override;
  53
  54   bool RegisterIsVolatile(const lldb_private::RegisterInfo *reg_info) override;
  55
  56   bool CallFrameAddressIsValid(lldb::addr_t cfa) override {
  57     // Make sure the stack call frame addresses are 8 byte aligned
  58     if (cfa & 0x07)
  59       return false; // Not 8 byte aligned
  60     if (cfa == 0)
  61       return false; // Zero is not a valid stack address
  62     return true;
  63   }
  64
  65   bool CodeAddressIsValid(lldb::addr_t pc) override {
  66     // We have a 64 bit address space, so anything is valid as opcodes
  67     // aren't fixed width...
  68     return true;
  69   }
  70
  71   const lldb_private::RegisterInfo *
  72   GetRegisterInfoArray(uint32_t &count) override;
  73
  74   // Static Functions
  75
  76   static void Initialize();
  77
  78   static void Terminate();
  79
  80   static lldb::ABISP CreateInstance(lldb::ProcessSP process_sp, const lldb_private::ArchSpec &arch);
  81
  82   static lldb_private::ConstString GetPluginNameStatic();
  83
  84   // PluginInterface protocol
  85
  86   lldb_private::ConstString GetPluginName() override;
  87
  88   uint32_t GetPluginVersion() override;
  89
  90 protected:
  91   void CreateRegisterMapIfNeeded();
  92
  93   lldb::ValueObjectSP
  94   GetReturnValueObjectSimple(lldb_private::Thread &thread,
  95                              lldb_private::CompilerType &ast_type) const;
  96
  97   bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
  98
  99 private:
 100   ABISysV_hexagon(lldb::ProcessSP process_sp,
 101                   std::unique_ptr<llvm::MCRegisterInfo> info_up)
 102       : lldb_private::ABI(std::move(process_sp), std::move(info_up)) {
 103     // Call CreateInstance instead.
 104   }
 105 };
 106
 107 #endif // liblldb_ABISysV_hexagon_h_