utility.hh revision 6335 
1/*
2 * Copyright (c) 2003-2005 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 */
30
31#ifndef __ARCH_SPARC_UTILITY_HH__
32#define __ARCH_SPARC_UTILITY_HH__
33
34#include "arch/sparc/faults.hh"
35#include "arch/sparc/isa_traits.hh"
36#include "arch/sparc/registers.hh"
37#include "arch/sparc/tlb.hh"
38#include "base/misc.hh"
39#include "base/bitfield.hh"
40#include "cpu/thread_context.hh"
41
42namespace SparcISA
43{
44
45
46    uint64_t getArgument(ThreadContext *tc, int number, bool fp);
47
48    static inline bool
49    inUserMode(ThreadContext *tc)
50    {
51        return !((tc->readMiscRegNoEffect(MISCREG_PSTATE) & (1 << 2)) ||
52                 (tc->readMiscRegNoEffect(MISCREG_HPSTATE) & (1 << 2)));
53    }
54
55    inline bool isCallerSaveIntegerRegister(unsigned int reg) {
56        panic("register classification not implemented");
57        return false;
58    }
59
60    inline bool isCalleeSaveIntegerRegister(unsigned int reg) {
61        panic("register classification not implemented");
62        return false;
63    }
64
65    inline bool isCallerSaveFloatRegister(unsigned int reg) {
66        panic("register classification not implemented");
67        return false;
68    }
69
70    inline bool isCalleeSaveFloatRegister(unsigned int reg) {
71        panic("register classification not implemented");
72        return false;
73    }
74
75    // Instruction address compression hooks
76    inline Addr realPCToFetchPC(const Addr &addr)
77    {
78        return addr;
79    }
80
81    inline Addr fetchPCToRealPC(const Addr &addr)
82    {
83        return addr;
84    }
85
86    // the size of "fetched" instructions (not necessarily the size
87    // of real instructions for PISA)
88    inline size_t fetchInstSize()
89    {
90        return sizeof(MachInst);
91    }
92
93    /**
94     * Function to insure ISA semantics about 0 registers.
95     * @param tc The thread context.
96     */
97    template <class TC>
98    void zeroRegisters(TC *tc);
99
100    inline void initCPU(ThreadContext *tc, int cpuId)
101    {
102        static Fault por = new PowerOnReset();
103        if (cpuId == 0)
104            por->invoke(tc);
105
106    }
107
108    inline void startupCPU(ThreadContext *tc, int cpuId)
109    {
110#if FULL_SYSTEM
111        // Other CPUs will get activated by IPIs
112        if (cpuId == 0)
113            tc->activate(0);
114#else
115        tc->activate(0);
116#endif
117    }
118
119    void copyRegs(ThreadContext *src, ThreadContext *dest);
120
121    void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
122
123} // namespace SparcISA
124
125#endif
126