remote_gdb.hh revision 8544:2862c39f66f8 
1/*
2 * Copyright (c) 2007 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
31#ifndef __ARCH_MIPS_REMOTE_GDB_HH__
32#define __ARCH_MIPS_REMOTE_GDB_HH__
33
34#include "arch/mips/registers.hh"
35#include "base/bitfield.hh"
36#include "base/remote_gdb.hh"
37
38class System;
39class ThreadContext;
40class PhysicalMemory;
41
42namespace MipsISA
43{
44
45    // The number of special regs depends on gdb.
46    // Two 32-bit regs are packed into one 64-bit reg.
47    const int GdbIntArchRegs = NumIntArchRegs / 2;
48    const int GdbIntSpecialRegs = 6 / 2;
49    const int GdbFloatArchRegs = NumFloatArchRegs / 2;
50    const int GdbFloatSpecialRegs = 2 / 2;
51
52    const int GdbIntRegs = GdbIntArchRegs + GdbIntSpecialRegs;
53    const int GdbFloatRegs = GdbFloatArchRegs + GdbFloatSpecialRegs;
54    const int GdbNumRegs = GdbIntRegs + GdbFloatRegs;
55
56    class RemoteGDB : public BaseRemoteGDB
57    {
58      protected:
59        Addr notTakenBkpt;
60        Addr takenBkpt;
61
62      public:
63        RemoteGDB(System *_system, ThreadContext *tc);
64
65      protected:
66        bool acc(Addr addr, size_t len);
67
68        void getregs();
69        void setregs();
70
71        void clearSingleStep();
72        void setSingleStep();
73
74      private:
75        uint64_t
76        pack(uint32_t lo, uint32_t hi)
77        {
78            return static_cast<uint64_t>(hi) << 32 | lo;
79        }
80        uint32_t
81        unpackLo(uint64_t val)
82        {
83            return bits(val, 31, 0);
84        }
85        uint32_t
86        unpackHi(uint64_t val)
87        {
88            return bits(val, 63, 32);
89        }
90    };
91}
92
93#endif /* __ARCH_MIPS_REMOTE_GDB_H__ */
94