utility.cc revision 7650:42684e4656e6 
1/*
2 * Copyright (c) 2009-2010 ARM Limited
3 * All rights reserved.
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: Ali Saidi
38 */
39
40
41#include "arch/arm/faults.hh"
42#include "arch/arm/utility.hh"
43#include "cpu/thread_context.hh"
44
45
46namespace ArmISA {
47
48void
49initCPU(ThreadContext *tc, int cpuId)
50{
51    // Reset CP15?? What does that mean -- ali
52
53    // FPEXC.EN = 0
54
55    static Fault reset = new Reset;
56    if (cpuId == 0)
57        reset->invoke(tc);
58}
59
60uint64_t getArgument(ThreadContext *tc, int number, bool fp) {
61#if FULL_SYSTEM
62    if (number < NumArgumentRegs) {
63        if (fp)
64            panic("getArgument(): Floating point arguments not implemented\n");
65        else
66            return tc->readIntReg(number);
67    }
68    else {
69        panic("getArgument(): Argument index %d beyond max supported (%d).\n",
70              number, NumArgumentRegs - 1);
71    }
72#else
73    panic("getArgument() only implemented for FULL_SYSTEM\n");
74    M5_DUMMY_RETURN
75#endif
76}
77
78Fault
79setCp15Register(uint32_t &Rd, int CRn, int opc1, int CRm, int opc2)
80{
81   return new UnimpFault(csprintf("MCR CP15: CRn: %d opc1: %d CRm: %d opc1: %d\n",
82               CRn, opc1, CRm, opc2));
83}
84
85Fault
86readCp15Register(uint32_t &Rd, int CRn, int opc1, int CRm, int opc2)
87{
88   return new UnimpFault(csprintf("MRC CP15: CRn: %d opc1: %d CRm: %d opc1: %d\n",
89           CRn, opc1, CRm, opc2));
90
91}
92
93
94}
95