system.cc revision 8799:dac1e33e07b0 
1/*
2 * Copyright (c) 2004-2006 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: Ali Saidi
29 *          Lisa Hsu
30 *          Nathan Binkert
31 */
32
33/**
34 * @file
35 * This code loads the linux kernel, console, pal and patches certain
36 * functions.  The symbol tables are loaded so that traces can show
37 * the executing function and we can skip functions. Various delay
38 * loops are skipped and their final values manually computed to speed
39 * up boot time.
40 */
41
42#include "arch/mips/linux/system.hh"
43#include "arch/mips/linux/threadinfo.hh"
44#include "arch/mips/idle_event.hh"
45#include "arch/mips/system.hh"
46#include "arch/vtophys.hh"
47#include "base/loader/symtab.hh"
48#include "cpu/base.hh"
49#include "cpu/thread_context.hh"
50#include "debug/Thread.hh"
51#include "dev/platform.hh"
52#include "kern/linux/events.hh"
53#include "kern/linux/printk.hh"
54#include "mem/physical.hh"
55#include "mem/port.hh"
56#include "sim/arguments.hh"
57#include "sim/byteswap.hh"
58
59using namespace std;
60using namespace MipsISA;
61using namespace Linux;
62
63LinuxMipsSystem::LinuxMipsSystem(Params *p)
64    : MipsSystem(p)
65{
66}
67
68LinuxMipsSystem::~LinuxMipsSystem()
69{
70}
71
72
73void
74LinuxMipsSystem::setDelayLoop(ThreadContext *tc)
75{
76    panic("setDelayLoop not implemented.\n");
77}
78
79
80void
81LinuxMipsSystem::SkipDelayLoopEvent::process(ThreadContext *tc)
82{
83    SkipFuncEvent::process(tc);
84    // calculate and set loops_per_jiffy
85    ((LinuxMipsSystem *)tc->getSystemPtr())->setDelayLoop(tc);
86}
87
88void
89LinuxMipsSystem::PrintThreadInfo::process(ThreadContext *tc)
90{
91    Linux::ThreadInfo ti(tc);
92
93    DPRINTF(Thread, "Currently Executing Thread %s, pid %d, started at: %d\n",
94            ti.curTaskName(), ti.curTaskPID(), ti.curTaskStart());
95}
96
97LinuxMipsSystem *
98LinuxMipsSystemParams::create()
99{
100    return new LinuxMipsSystem(this);
101}
102