utility.hh revision 10407:a9023811bf9e 
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/isa_traits.hh"
35#include "arch/sparc/registers.hh"
36#include "arch/sparc/tlb.hh"
37#include "base/bitfield.hh"
38#include "base/misc.hh"
39#include "cpu/static_inst.hh"
40#include "cpu/thread_context.hh"
41#include "sim/fault_fwd.hh"
42#include "sim/full_system.hh"
43
44namespace SparcISA
45{
46
47inline PCState
48buildRetPC(const PCState &curPC, const PCState &callPC)
49{
50    PCState ret = callPC;
51    ret.uEnd();
52    ret.pc(curPC.npc());
53    return ret;
54}
55
56uint64_t getArgument(ThreadContext *tc, int &number, uint16_t size, bool fp);
57
58static inline bool
59inUserMode(ThreadContext *tc)
60{
61    PSTATE pstate = tc->readMiscRegNoEffect(MISCREG_PSTATE);
62    HPSTATE hpstate = tc->readMiscRegNoEffect(MISCREG_HPSTATE);
63    return !(pstate.priv || hpstate.hpriv);
64}
65
66/**
67 * Function to insure ISA semantics about 0 registers.
68 * @param tc The thread context.
69 */
70template <class TC>
71void zeroRegisters(TC *tc);
72
73void initCPU(ThreadContext *tc, int cpuId);
74
75inline void
76startupCPU(ThreadContext *tc, int cpuId)
77{
78    // Other CPUs will get activated by IPIs
79    if (cpuId == 0 || !FullSystem)
80        tc->activate();
81}
82
83void copyRegs(ThreadContext *src, ThreadContext *dest);
84
85void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
86
87void skipFunction(ThreadContext *tc);
88
89inline void
90advancePC(PCState &pc, const StaticInstPtr inst)
91{
92    inst->advancePC(pc);
93}
94
95inline uint64_t
96getExecutingAsid(ThreadContext *tc)
97{
98    return tc->readMiscRegNoEffect(MISCREG_MMU_P_CONTEXT);
99}
100
101} // namespace SparcISA
102
103#endif
104