process.hh revision 5285 
1/*
2 * Copyright (c) 2003-2004 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: Gabe Black
29 *          Ali Saidi
30 */
31
32#ifndef __SPARC_PROCESS_HH__
33#define __SPARC_PROCESS_HH__
34
35#include <string>
36#include <vector>
37#include "sim/byteswap.hh"
38#include "sim/process.hh"
39
40class ObjectFile;
41class System;
42
43class SparcLiveProcess : public LiveProcess
44{
45  protected:
46
47    const Addr StackBias;
48
49    //The locations of the fill and spill handlers
50    Addr fillStart, spillStart;
51
52    SparcLiveProcess(LiveProcessParams * params,
53            ObjectFile *objFile, Addr _StackBias);
54
55    void startup();
56
57    template<class IntType>
58    void argsInit(int pageSize);
59
60  public:
61
62    //Handles traps which request services from the operating system
63    virtual void handleTrap(int trapNum, ThreadContext *tc);
64
65    Addr readFillStart()
66    { return fillStart; }
67
68    Addr readSpillStart()
69    { return spillStart; }
70
71    virtual void flushWindows(ThreadContext *tc) = 0;
72};
73
74template<class IntType>
75struct M5_auxv_t
76{
77    IntType a_type;
78    union {
79        IntType a_val;
80        IntType a_ptr;
81        IntType a_fcn;
82    };
83
84    M5_auxv_t()
85    {}
86
87    M5_auxv_t(IntType type, IntType val)
88    {
89        a_type = SparcISA::htog(type);
90        a_val = SparcISA::htog(val);
91    }
92};
93
94class Sparc32LiveProcess : public SparcLiveProcess
95{
96  protected:
97
98    Sparc32LiveProcess(LiveProcessParams * params, ObjectFile *objFile) :
99            SparcLiveProcess(params, objFile, 0)
100    {
101        // Set up stack. On SPARC Linux, stack goes from the top of memory
102        // downward, less the hole for the kernel address space.
103        stack_base = (Addr)0xf0000000ULL;
104
105        // Set up region for mmaps.
106        mmap_start = mmap_end = 0x70000000;
107    }
108
109    void startup();
110
111  public:
112
113    void argsInit(int intSize, int pageSize);
114
115    void flushWindows(ThreadContext *tc);
116};
117
118class Sparc64LiveProcess : public SparcLiveProcess
119{
120  protected:
121
122    Sparc64LiveProcess(LiveProcessParams * params, ObjectFile *objFile) :
123            SparcLiveProcess(params, objFile, 2047)
124    {
125        // Set up stack. On SPARC Linux, stack goes from the top of memory
126        // downward, less the hole for the kernel address space.
127        stack_base = (Addr)0x80000000000ULL;
128
129        // Set up region for mmaps.  Tru64 seems to start just above 0 and
130        // grow up from there.
131        mmap_start = mmap_end = 0xfffff80000000000ULL;
132    }
133
134    void startup();
135
136  public:
137
138    void argsInit(int intSize, int pageSize);
139
140    void flushWindows(ThreadContext *tc);
141};
142
143#endif // __SPARC_PROCESS_HH__
144