summaryrefslogtreecommitdiff
path: root/src/arch/sparc/process.hh
blob: d7e0967585bc06f687f672f438998d5056ee0cfa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
 * Copyright (c) 2003-2004 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Gabe Black
 *          Ali Saidi
 */

#ifndef __SPARC_PROCESS_HH__
#define __SPARC_PROCESS_HH__

#include <memory>
#include <string>
#include <vector>

#include "arch/sparc/isa_traits.hh"
#include "base/loader/object_file.hh"
#include "mem/page_table.hh"
#include "sim/byteswap.hh"
#include "sim/process.hh"

class SparcProcess : public Process
{
  protected:

    const Addr StackBias;

    // The locations of the fill and spill handlers
    Addr fillStart, spillStart;

    SparcProcess(ProcessParams * params, ObjectFile *objFile,
                 Addr _StackBias);

    void initState();

    template<class IntType>
    void argsInit(int pageSize);

  public:

    // Handles traps which request services from the operating system
    virtual void handleTrap(int trapNum, ThreadContext *tc, Fault *fault);

    Addr readFillStart() { return fillStart; }
    Addr readSpillStart() { return spillStart; }

    virtual void flushWindows(ThreadContext *tc) = 0;
    void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
};

class Sparc32Process : public SparcProcess
{
  protected:

    Sparc32Process(ProcessParams * params, ObjectFile *objFile)
        : SparcProcess(params, objFile, 0)
    {
        Addr brk_point = objFile->dataBase() + objFile->dataSize() +
                         objFile->bssSize();
        brk_point = roundUp(brk_point, SparcISA::PageBytes);

        // Reserve 8M for main stack.
        Addr max_stack_size = 8 * 1024 * 1024;

        // Set up stack. On SPARC Linux, stack goes from the top of memory
        // downward, less the hole for the kernel address space.
        Addr stack_base = 0xf0000000ULL;

        // Set pointer for next thread stack.
        Addr next_thread_stack_base = stack_base - max_stack_size;

        // Set up region for mmaps.
        Addr mmap_end = 0x70000000;

        memState = std::make_shared<MemState>(brk_point, stack_base,
                                              max_stack_size,
                                              next_thread_stack_base,
                                              mmap_end);
    }

    void initState();

  public:

    void argsInit(int intSize, int pageSize);

    void flushWindows(ThreadContext *tc);

    SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
    /// Explicitly import the otherwise hidden getSyscallArg
    using Process::getSyscallArg;

    void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
};

class Sparc64Process : public SparcProcess
{
  protected:

    Sparc64Process(ProcessParams * params, ObjectFile *objFile)
        : SparcProcess(params, objFile, 2047)
    {
        Addr brk_point = objFile->dataBase() + objFile->dataSize() +
                         objFile->bssSize();
        brk_point = roundUp(brk_point, SparcISA::PageBytes);

        Addr max_stack_size = 8 * 1024 * 1024;

        // Set up stack. On SPARC Linux, stack goes from the top of memory
        // downward, less the hole for the kernel address space.
        Addr stack_base = 0x80000000000ULL;

        // Set pointer for next thread stack.  Reserve 8M for main stack.
        Addr next_thread_stack_base = stack_base - max_stack_size;

        // Set up region for mmaps.
        Addr mmap_end = 0xfffff80000000000ULL;

        memState = std::make_shared<MemState>(brk_point, stack_base,
                                              max_stack_size,
                                              next_thread_stack_base,
                                              mmap_end);
    }

    void initState();

  public:

    void argsInit(int intSize, int pageSize);

    void flushWindows(ThreadContext *tc);

    SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
    /// Explicitly import the otherwise hidden getSyscallArg
    using Process::getSyscallArg;

    void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
};

#endif // __SPARC_PROCESS_HH__