process.cc revision 3669:3607aaed36b6 
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#include "arch/alpha/isa_traits.hh"
33#include "arch/alpha/process.hh"
34#include "base/loader/object_file.hh"
35#include "base/misc.hh"
36#include "cpu/thread_context.hh"
37#include "sim/system.hh"
38
39
40using namespace AlphaISA;
41using namespace std;
42
43AlphaLiveProcess::AlphaLiveProcess(const std::string &nm, ObjectFile *objFile,
44        System *_system, int stdin_fd, int stdout_fd, int stderr_fd,
45        std::vector<std::string> &argv, std::vector<std::string> &envp,
46        const std::string &cwd,
47        uint64_t _uid, uint64_t _euid, uint64_t _gid, uint64_t _egid,
48        uint64_t _pid, uint64_t _ppid)
49    : LiveProcess(nm, objFile, _system, stdin_fd, stdout_fd, stderr_fd,
50        argv, envp, cwd, _uid, _euid, _gid, _egid, _pid, _ppid)
51{
52    brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
53    brk_point = roundUp(brk_point, VMPageSize);
54
55    // Set up stack.  On Alpha, stack goes below text section.  This
56    // code should get moved to some architecture-specific spot.
57    stack_base = objFile->textBase() - (409600+4096);
58
59    // Set up region for mmaps.  Tru64 seems to start just above 0 and
60    // grow up from there.
61    mmap_start = mmap_end = 0x10000;
62
63    // Set pointer for next thread stack.  Reserve 8M for main stack.
64    next_thread_stack_base = stack_base - (8 * 1024 * 1024);
65
66}
67
68void
69AlphaLiveProcess::startup()
70{
71    argsInit(MachineBytes, VMPageSize);
72
73    threadContexts[0]->setIntReg(GlobalPointerReg, objFile->globalPointer());
74}
75
76
77