process.cc revision 5222:bb733a878f85 
1/*
2 * Copyright N) 2007 MIPS Technologies, Inc.  All Rights Reserved
3 *
4 * This software is part of the M5 simulator.
5 *
6 * THIS IS A LEGAL AGREEMENT.  BY DOWNLOADING, USING, COPYING, CREATING
7 * DERIVATIVE WORKS, AND/OR DISTRIBUTING THIS SOFTWARE YOU ARE AGREEING
8 * TO THESE TERMS AND CONDITIONS.
9 *
10 * Permission is granted to use, copy, create derivative works and
11 * distribute this software and such derivative works for any purpose,
12 * so long as (1) the copyright notice above, this grant of permission,
13 * and the disclaimer below appear in all copies and derivative works
14 * made, (2) the copyright notice above is augmented as appropriate to
15 * reflect the addition of any new copyrightable work in a derivative
16 * work (e.g., Copyright N) <Publication Year> Copyright Owner), and (3)
17 * the name of MIPS Technologies, Inc. ($(B!H(BMIPS$(B!I(B) is not used in any
18 * advertising or publicity pertaining to the use or distribution of
19 * this software without specific, written prior authorization.
20 *
21 * THIS SOFTWARE IS PROVIDED $(B!H(BAS IS.$(B!I(B  MIPS MAKES NO WARRANTIES AND
22 * DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, STATUTORY, IMPLIED OR
23 * OTHERWISE, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
25 * NON-INFRINGEMENT OF THIRD PARTY RIGHTS, REGARDING THIS SOFTWARE.
26 * IN NO EVENT SHALL MIPS BE LIABLE FOR ANY DAMAGES, INCLUDING DIRECT,
27 * INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, OR PUNITIVE DAMAGES OF
28 * ANY KIND OR NATURE, ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT,
29 * THIS SOFTWARE AND/OR THE USE OF THIS SOFTWARE, WHETHER SUCH LIABILITY
30 * IS ASSERTED ON THE BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE OR
31 * STRICT LIABILITY), OR OTHERWISE, EVEN IF MIPS HAS BEEN WARNED OF THE
32 * POSSIBILITY OF ANY SUCH LOSS OR DAMAGE IN ADVANCE.
33 *
34 * Authors: Gabe M. Black
35 *          Ali G. Saidi
36 *          Korey L. Sewell
37 */
38
39#include "arch/mips/isa_traits.hh"
40#include "arch/mips/process.hh"
41#include "base/loader/object_file.hh"
42#include "base/misc.hh"
43#include "cpu/thread_context.hh"
44#include "sim/system.hh"
45
46using namespace std;
47using namespace MipsISA;
48
49MipsLiveProcess::MipsLiveProcess(LiveProcessParams * params,
50        ObjectFile *objFile)
51    : LiveProcess(params, objFile)
52{
53    // Set up stack. On MIPS, stack starts at the top of kuseg
54    // user address space. MIPS stack grows down from here
55    stack_base = 0x7FFFFFFF;
56
57    // Set pointer for next thread stack.  Reserve 8M for main stack.
58    next_thread_stack_base = stack_base - (8 * 1024 * 1024);
59
60    // Set up break point (Top of Heap)
61    brk_point = objFile->dataBase() + objFile->dataSize() + objFile->bssSize();
62    brk_point = roundUp(brk_point, VMPageSize);
63
64    // Set up region for mmaps. For now, start at bottom of kuseg space.
65    mmap_start = mmap_end = 0x10000;
66}
67
68void
69MipsLiveProcess::startup()
70{
71    argsInit(MachineBytes, VMPageSize);
72}
73