2 * Copyright (c) 2004 The Regents of The University of Michigan
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.
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
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include "cpu/exec_context.hh"
30 #include "cpu/base_cpu.hh"
31 #include "cpu/full_cpu/bpred.hh"
32 #include "cpu/full_cpu/full_cpu.hh"
33 #include "kern/system_events.hh"
34 #include "sim/system.hh"
35 #include "sim/sw_context.hh"
38 SkipFuncEvent::process(ExecContext
*xc
)
40 Addr newpc
= xc
->regs
.intRegFile
[ReturnAddressReg
];
42 DPRINTF(PCEvent
, "skipping %s: pc=%x, newpc=%x\n", description
,
46 xc
->regs
.npc
= xc
->regs
.pc
+ sizeof(MachInst
);
48 BranchPred
*bp
= xc
->cpu
->getBranchPred();
50 bp
->popRAS(xc
->thread_num
);
55 FnEvent::FnEvent(PCEventQueue
*q
, const std::string
& desc
, System
*system
)
56 : PCEvent(q
, desc
), _name(desc
)
58 myBin
= system
->getBin(desc
);
63 FnEvent::process(ExecContext
*xc
)
65 if (xc
->misspeculating())
67 assert(xc
->system
->bin
&& "FnEvent must be in a binned system");
68 SWContext
*ctx
= xc
->swCtx
;
69 DPRINTF(TCPIP
, "%s: %s Event!!!\n", xc
->system
->name(), description
);
71 if (ctx
&& !ctx
->callStack
.empty()) {
72 DPRINTF(TCPIP
, "already a callstack!\n");
73 fnCall
*last
= ctx
->callStack
.top();
75 if (last
->name
== "idle_thread")
78 if (!xc
->system
->findCaller(myname(), "" ) &&
79 !xc
->system
->findCaller(myname(), last
->name
)) {
81 DPRINTF(TCPIP
, "but can't find parent %s\n", last
->name
);
86 //assert(!ctx->calls && "on a binned fn, calls should == 0 (but can happen in boot)");
88 DPRINTF(TCPIP
, "no callstack yet\n");
89 if (!xc
->system
->findCaller(myname(), "")) {
90 DPRINTF(TCPIP
, "not the right function, returning\n");
94 DPRINTF(TCPIP
, "creating new context for %s\n", myname());
99 DPRINTF(TCPIP
, "adding fn %s to context\n", myname());
100 fnCall
*call
= new fnCall
;
102 call
->name
= myname();
103 ctx
->callStack
.push(call
);
105 xc
->system
->fnCalls
++;
106 DPRINTF(TCPIP
, "fnCalls for %s is %d\n", description
,
107 xc
->system
->fnCalls
.value());
108 xc
->system
->dumpState(xc
);