system.hh revision 887 
1/*
2 * Copyright (c) 2003 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
29#ifndef __LINUX_SYSTEM_HH__
30#define __LINUX_SYSTEM_HH__
31
32#include <vector>
33
34#include "sim/system.hh"
35#include "sim/host.hh"
36#include "targetarch/isa_traits.hh"
37
38#include <map>
39
40/**
41 * MAGIC address where the kernel arguments should go. Defined as
42 * PARAM in linux kernel alpha-asm.
43 */
44const Addr PARAM_ADDR =  ULL(0xfffffc000030a000);
45
46class ExecContext;
47class ElfObject;
48class SymbolTable;
49
50class BreakPCEvent;
51class LinuxSkipDelayLoopEvent;
52class SkipFuncEvent;
53class FnEvent;
54class AlphaArguments;
55
56/**
57 * This class contains linux specific system code (Loading, Events, Binning).
58 * It points to objects that are the system binaries to load and patches them
59 * appropriately to work in simulator.
60 */
61class LinuxSystem : public System
62{
63  private:
64    /** Object pointer for the kernel code */
65    ElfObject *kernel;
66
67    /** Object pointer for the console code */
68    ElfObject *console;
69
70    /** kernel Symbol table */
71    SymbolTable *kernelSymtab;
72
73    /** console symbol table */
74    SymbolTable *consoleSymtab;
75
76    /** Event to halt the simulator if the kernel calls panic()  */
77    BreakPCEvent *kernelPanicEvent;
78
79    /** Event to halt the simulator if the console calls panic() */
80    BreakPCEvent *consolePanicEvent;
81
82    /** Event to skip determine_cpu_caches() because we don't support the
83     * IPRs that the code can access to figure out cache sizes
84     */
85    SkipFuncEvent *skipCacheProbeEvent;
86
87    /** PC based event to skip the ide_delay_50ms() call */
88    SkipFuncEvent *skipIdeDelay50msEvent;
89
90    /** Skip calculate_delay_loop() rather than waiting for this to be
91     * calculated
92     */
93    LinuxSkipDelayLoopEvent *skipDelayLoopEvent;
94
95    /** Begining of kernel code */
96    Addr kernelStart;
97
98    /** End of kernel code */
99    Addr kernelEnd;
100
101    /** Entry point in the kernel to start at */
102    Addr kernelEntry;
103
104    bool bin;
105    std::vector<string> binned_fns;
106
107  public:
108    std::vector<RemoteGDB *>   remoteGDB;
109    std::vector<GDBListener *> gdbListen;
110
111    LinuxSystem(const std::string _name,
112                const uint64_t _init_param,
113                MemoryController *_memCtrl,
114                PhysicalMemory *_physmem,
115                const std::string &kernel_path,
116                const std::string &console_path,
117                const std::string &palcode,
118                const std::string &boot_osflags,
119                const bool _bin,
120                const std::vector<std::string> &_binned_fns);
121
122    ~LinuxSystem();
123
124    void setDelayLoop(ExecContext *xc);
125
126    int registerExecContext(ExecContext *xc);
127    void replaceExecContext(ExecContext *xc, int xcIndex);
128
129    /**
130     * Returns the addess the kernel starts at.
131     * @return address the kernel starts at
132     */
133    Addr getKernelStart() const { return kernelStart; }
134
135    /**
136     * Returns the addess the kernel ends at.
137     * @return address the kernel ends at
138     */
139    Addr getKernelEnd() const { return kernelEnd; }
140
141    /**
142     * Returns the addess the entry point to the kernel code.
143     * @return entry point of the kernel code
144     */
145    Addr getKernelEntry() const { return kernelEntry; }
146
147
148    bool breakpoint();
149};
150
151#endif // __LINUX_SYSTEM_HH__
152