process.cc revision 2754:e3d023bc752c 
1
2/*
3 * Copyright (c) 2003-2004 The Regents of The University of Michigan
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Authors: Gabe Black
30 *          Ali Saidi
31 *          Korey Sewell
32 */
33
34#include "arch/mips/isa_traits.hh"
35#include "arch/mips/process.hh"
36#include "base/loader/object_file.hh"
37#include "base/misc.hh"
38#include "cpu/thread_context.hh"
39#include "sim/system.hh"
40
41using namespace std;
42using namespace MipsISA;
43
44MipsLiveProcess::MipsLiveProcess(const std::string &nm, ObjectFile *objFile,
45        System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
46        std::vector<std::string> &argv, std::vector<std::string> &envp)
47    : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
48        argv, envp)
49{
50    // Set up stack. On MIPS, stack starts at the top of kuseg
51    // user address space. MIPS stack grows down from here
52    stack_base = 0x7FFFFFFF;
53
54    // Set pointer for next thread stack.  Reserve 8M for main stack.
55    next_thread_stack_base = stack_base - (8 * 1024 * 1024);
56
57    // Set up break point (Top of Heap)
58    brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
59    brk_point = roundUp(brk_point, VMPageSize);
60
61    // Set up region for mmaps. For now, start at bottom of kuseg space.
62    mmap_start = mmap_end = 0x10000;
63}
64
65void
66MipsLiveProcess::startup()
67{
68    argsInit(MachineBytes, VMPageSize);
69}
70