src/arch/arm/remote_gdb.hh

   1 /*
   2  * Copyright 2015 LabWare
   3  * Copyright 2014 Google, Inc.
   4  * Copyright (c) 2013, 2016, 2018-2019 ARM Limited
   5  * All rights reserved
   6  *
   7  * The license below extends only to copyright in the software and shall
   8  * not be construed as granting a license to any other intellectual
   9  * property including but not limited to intellectual property relating
  10  * to a hardware implementation of the functionality of the software
  11  * licensed hereunder.  You may use the software subject to the license
  12  * terms below provided that you ensure that this notice is replicated
  13  * unmodified and in its entirety in all distributions of the software,
  14  * modified or unmodified, in source code or in binary form.
  15  *
  16  * Copyright (c) 2002-2005 The Regents of The University of Michigan
  17  * Copyright (c) 2007-2008 The Florida State University
  18  * All rights reserved.
  19  *
  20  * Redistribution and use in source and binary forms, with or without
  21  * modification, are permitted provided that the following conditions are
  22  * met: redistributions of source code must retain the above copyright
  23  * notice, this list of conditions and the following disclaimer;
  24  * redistributions in binary form must reproduce the above copyright
  25  * notice, this list of conditions and the following disclaimer in the
  26  * documentation and/or other materials provided with the distribution;
  27  * neither the name of the copyright holders nor the names of its
  28  * contributors may be used to endorse or promote products derived from
  29  * this software without specific prior written permission.
  30  *
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  36  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  37  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  38  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  39  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  40  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  41  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  42  */
  43
  44 #ifndef __ARCH_ARM_REMOTE_GDB_HH__
  45 #define __ARCH_ARM_REMOTE_GDB_HH__
  46
  47 #include <algorithm>
  48
  49 #include "arch/arm/registers.hh"
  50 #include "arch/arm/utility.hh"
  51 #include "base/compiler.hh"
  52 #include "base/remote_gdb.hh"
  53
  54 class System;
  55 class ThreadContext;
  56
  57 namespace ArmISA
  58 {
  59
  60 class RemoteGDB : public BaseRemoteGDB
  61 {
  62   protected:
  63     bool acc(Addr addr, size_t len);
  64
  65     class AArch32GdbRegCache : public BaseGdbRegCache
  66     {
  67       using BaseGdbRegCache::BaseGdbRegCache;
  68       private:
  69         struct M5_ATTR_PACKED {
  70           uint32_t gpr[16];
  71           uint32_t cpsr;
  72           uint64_t fpr[32];
  73           uint32_t fpscr;
  74         } r;
  75       public:
  76         char *data() const { return (char *)&r; }
  77         size_t size() const { return sizeof(r); }
  78         void getRegs(ThreadContext*);
  79         void setRegs(ThreadContext*) const;
  80         const std::string
  81         name() const
  82         {
  83             return gdb->name() + ".AArch32GdbRegCache";
  84         }
  85     };
  86
  87     class AArch64GdbRegCache : public BaseGdbRegCache
  88     {
  89       using BaseGdbRegCache::BaseGdbRegCache;
  90       private:
  91         struct M5_ATTR_PACKED {
  92           uint64_t x[31];
  93           uint64_t spx;
  94           uint64_t pc;
  95           uint32_t cpsr;
  96           VecElem v[NumVecV8ArchRegs * NumVecElemPerNeonVecReg];
  97           uint32_t fpsr;
  98           uint32_t fpcr;
  99         } r;
 100       public:
 101         char *data() const { return (char *)&r; }
 102         size_t size() const { return sizeof(r); }
 103         void getRegs(ThreadContext*);
 104         void setRegs(ThreadContext*) const;
 105         const std::string
 106         name() const
 107         {
 108             return gdb->name() + ".AArch64GdbRegCache";
 109         }
 110     };
 111
 112     AArch32GdbRegCache regCache32;
 113     AArch64GdbRegCache regCache64;
 114
 115   public:
 116     RemoteGDB(System *_system, ThreadContext *tc, int _port);
 117     BaseGdbRegCache *gdbRegs();
 118     std::vector<std::string>
 119     availableFeatures() const
 120     {
 121         return {"qXfer:features:read+"};
 122     };
 123     bool getXferFeaturesRead(const std::string &annex, std::string &output);
 124 };
 125 } // namespace ArmISA
 126
 127 #endif /* __ARCH_ARM_REMOTE_GDB_H__ */