remote_gdb.hh

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/*
 * Copyright (c) 2017 The University of Virginia
 * Copyright 2015 LabWare
 * Copyright 2014 Google, Inc.
 * Copyright (c) 2007 The Regents of The University of Michigan
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#ifndef __ARCH_RISCV_REMOTE_GDB_HH__
#define __ARCH_RISCV_REMOTE_GDB_HH__
 
#include <string>
 
#include "arch/riscv/registers.hh"
#include "base/remote_gdb.hh"
 
class System;
class ThreadContext;
 
namespace RiscvISA
{
 
class RemoteGDB : public BaseRemoteGDB
{
  protected:
    static const int NumGDBRegs = 4162;
    static const int NumCSRs = 4096;
 
    bool acc(Addr addr, size_t len) override;
    // A breakpoint will be 2 bytes if it is compressed and 4 if not
    bool checkBpLen(size_t len) override { return len == 2 || len == 4; }
 
    class RiscvGdbRegCache : public BaseGdbRegCache
    {
      using BaseGdbRegCache::BaseGdbRegCache;
      private:
        struct {
            uint64_t gpr[NumIntArchRegs];
            uint64_t pc;
        } r;
      public:
        char *data() const { return (char *)&r; }
        size_t size() const { return sizeof(r); }
        void getRegs(ThreadContext*);
        void setRegs(ThreadContext*) const;
 
        const std::string
        name() const
        {
            return gdb->name() + ".RiscvGdbRegCache";
        }
    };
 
    RiscvGdbRegCache regCache;
 
  public:
    RemoteGDB(System *_system, ThreadContext *tc, int _port);
    BaseGdbRegCache *gdbRegs() override;
};
 
} // namespace RiscvISA
 
#endif /* __ARCH_RISCV_REMOTE_GDB_H__ */