diff options
Diffstat (limited to 'kern/system_events.cc')
| -rw-r--r-- | kern/system_events.cc | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/kern/system_events.cc b/kern/system_events.cc new file mode 100644 index 000000000..011dbce5f --- /dev/null +++ b/kern/system_events.cc @@ -0,0 +1,109 @@ +/* + * Copyright (c) 2003 The Regents of The University of Michigan + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "cpu/exec_context.hh" +#include "cpu/base_cpu.hh" +#include "cpu/full_cpu/bpred.hh" +#include "cpu/full_cpu/full_cpu.hh" +#include "kern/system_events.hh" +#include "sim/system.hh" +#include "sim/sw_context.hh" + +void +SkipFuncEvent::process(ExecContext *xc) +{ + Addr newpc = xc->regs.intRegFile[ReturnAddressReg]; + + DPRINTF(PCEvent, "skipping %s: pc=%x, newpc=%x\n", description, + xc->regs.pc, newpc); + + xc->regs.pc = newpc; + xc->regs.npc = xc->regs.pc + sizeof(MachInst); + + BranchPred *bp = xc->cpu->getBranchPred(); + if (bp != NULL) { + bp->popRAS(xc->thread_num); + } +} + + +FnEvent::FnEvent(PCEventQueue *q, const std::string & desc, System *system) + : PCEvent(q, desc), _name(desc) +{ + myBin = system->getBin(desc); + assert(myBin); +} + +void +FnEvent::process(ExecContext *xc) +{ + if (xc->misspeculating()) + return; + assert(xc->system->bin && "FnEvent must be in a binned system"); + SWContext *ctx = xc->swCtx; + DPRINTF(TCPIP, "%s: %s Event!!!\n", xc->system->name(), description); + + if (ctx && !ctx->callStack.empty()) { + DPRINTF(TCPIP, "already a callstack!\n"); + fnCall *last = ctx->callStack.top(); + + if (last->name == "idle_thread") + ctx->calls++; + + if (!xc->system->findCaller(myname(), "" ) && + !xc->system->findCaller(myname(), last->name)) { + + DPRINTF(TCPIP, "but can't find parent %s\n", last->name); + return; + } + ctx->calls--; + + //assert(!ctx->calls && "on a binned fn, calls should == 0 (but can happen in boot)"); + } else { + DPRINTF(TCPIP, "no callstack yet\n"); + if (!xc->system->findCaller(myname(), "")) { + DPRINTF(TCPIP, "not the right function, returning\n"); + return; + } + if (!ctx) { + DPRINTF(TCPIP, "creating new context for %s\n", myname()); + ctx = new SWContext; + xc->swCtx = ctx; + } + } + DPRINTF(TCPIP, "adding fn %s to context\n", myname()); + fnCall *call = new fnCall; + call->myBin = myBin; + call->name = myname(); + ctx->callStack.push(call); + myBin->activate(); + xc->system->fnCalls++; + DPRINTF(TCPIP, "fnCalls for %s is %d\n", description, + xc->system->fnCalls.value()); + xc->system->dumpState(xc); +} |