utility.hh revision 7878:d3e6ebcccabf 
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/misc.hh"
38#include "base/bitfield.hh"
39#include "cpu/static_inst.hh"
40#include "cpu/thread_context.hh"
41#include "sim/fault_fwd.hh"
42
43namespace SparcISA
44{
45
46inline PCState
47buildRetPC(const PCState &curPC, const PCState &callPC)
48{
49    PCState ret = callPC;
50    ret.uEnd();
51    ret.pc(curPC.npc());
52    return ret;
53}
54
55uint64_t getArgument(ThreadContext *tc, int &number, uint16_t size, bool fp);
56
57static inline bool
58inUserMode(ThreadContext *tc)
59{
60    return !((tc->readMiscRegNoEffect(MISCREG_PSTATE) & (1 << 2)) ||
61             (tc->readMiscRegNoEffect(MISCREG_HPSTATE) & (1 << 2)));
62}
63
64/**
65 * Function to insure ISA semantics about 0 registers.
66 * @param tc The thread context.
67 */
68template <class TC>
69void zeroRegisters(TC *tc);
70
71void initCPU(ThreadContext *tc, int cpuId);
72
73inline void
74startupCPU(ThreadContext *tc, int cpuId)
75{
76#if FULL_SYSTEM
77    // Other CPUs will get activated by IPIs
78    if (cpuId == 0)
79        tc->activate(0);
80#else
81    tc->activate(0);
82#endif
83}
84
85void copyRegs(ThreadContext *src, ThreadContext *dest);
86
87void copyMiscRegs(ThreadContext *src, ThreadContext *dest);
88
89void skipFunction(ThreadContext *tc);
90
91inline void
92advancePC(PCState &pc, const StaticInstPtr inst)
93{
94    inst->advancePC(pc);
95}
96
97} // namespace SparcISA
98
99#endif
100