lldb/source/Plugins/ABI/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 LLDB_SOURCE_PLUGINS_ABI_HEXAGON_ABISYSV_HEXAGON_H
  11 #define LLDB_SOURCE_PLUGINS_ABI_HEXAGON_ABISYSV_HEXAGON_H
  12
  13 #include "lldb/Target/ABI.h"
  14 #include "lldb/lldb-private.h"
  15
  16 class ABISysV_hexagon : public lldb_private::RegInfoBasedABI {
  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 llvm::StringRef GetPluginNameStatic() { return "sysv-hexagon"; }
  83
  84   // PluginInterface protocol
  85
  86   llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
  87
  88 protected:
  89   void CreateRegisterMapIfNeeded();
  90
  91   lldb::ValueObjectSP
  92   GetReturnValueObjectSimple(lldb_private::Thread &thread,
  93                              lldb_private::CompilerType &ast_type) const;
  94
  95   bool RegisterIsCalleeSaved(const lldb_private::RegisterInfo *reg_info);
  96
  97 private:
  98   using lldb_private::RegInfoBasedABI::RegInfoBasedABI; // Call CreateInstance instead.
  99 };
 100
 101 #endif // LLDB_SOURCE_PLUGINS_ABI_HEXAGON_ABISYSV_HEXAGON_H