0dcb288365
are more efficient and reduce the number of new/delete calls
arch/alpha/stacktrace.cc:
- Change the StackTrace code so that the class can more easily be
cleaned out and reused to avoid extra allocations.
- Allow trace() to accept a static instruction pointer so it can
determine if the instruction is worth tracing. This is moved from
the CPU.
- provide constants for special meaning PCs (user, console, unknown),
instead of magic numbers
- switch to using kernelSymtab instead of allSymtab which will be
going away
- if the stack adjustment doesn't make any sense, exit and push
unknown so we don't get into an infinite loop or record garbage.
- check to see if we've made too many iterations through the stack
and panic to avoid an infinite loop
arch/alpha/stacktrace.hh:
- Change the StackTrace code so that the class can more easily be
cleaned out and reused to avoid extra allocations.
- Allow trace() to accept a static instruction pointer so it can
determine if the instruction is worth tracing. This is moved from
the CPU.
- provide constants for special meaning PCs (user, console, unknown),
instead of magic numbers
cpu/base.cc:
only clear the profile if we have one
include profile.hh here since base.hh doesn't do it anymore
cpu/base.hh:
no need to include cpu/profile.hh here
cpu/profile.cc:
use ProfileNode pointers instead of objects in the ChildList
Consume a vector of addresses since that's really all we
care about.
cpu/profile.hh:
Keep pointers to ProfileNodes to reduce the size of these structures
keep a StackTrace around so that we may reuse it.
provide consume functions that use the new StackTrace trace interface
one consume function is inline and tries to fastpath the no trace
condition, it calls the outlined consume function if a trace is generated.
cpu/simple/cpu.cc:
include cpu/profile.hh here since base.hh no longer does
use the new FunctionProfile::consume interface
(which contains the tracing functions)
--HG--
extra : convert_revision : 5a1d9265289a75f67a497b322926be1f8c2d8eb3
118 lines
3.2 KiB
C++
118 lines
3.2 KiB
C++
/*
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* Copyright (c) 2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __ARCH_ALPHA_STACKTRACE_HH__
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#define __ARCH_ALPHA_STACKTRACE_HH__
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#include "base/trace.hh"
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#include "cpu/static_inst.hh"
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class ExecContext;
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class StackTrace;
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class ProcessInfo
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{
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private:
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ExecContext *xc;
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int thread_info_size;
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int task_struct_size;
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int task_off;
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int pid_off;
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int name_off;
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public:
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ProcessInfo(ExecContext *_xc);
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Addr task(Addr ksp) const;
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int pid(Addr ksp) const;
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std::string name(Addr ksp) const;
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};
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class StackTrace
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{
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private:
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ExecContext *xc;
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std::vector<Addr> stack;
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private:
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bool isEntry(Addr addr);
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bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra);
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bool decodeSave(MachInst inst, int ®, int &disp);
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bool decodeStack(MachInst inst, int &disp);
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void trace(ExecContext *xc, bool is_call);
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public:
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StackTrace();
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StackTrace(ExecContext *xc, StaticInstPtr<TheISA> inst);
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~StackTrace();
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void clear()
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{
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xc = 0;
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stack.clear();
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}
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bool valid() const { return xc != NULL; }
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bool trace(ExecContext *xc, StaticInstPtr<TheISA> inst);
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public:
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const std::vector<Addr> &getstack() const { return stack; }
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static const int user = 1;
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static const int console = 2;
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static const int unknown = 3;
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#if TRACING_ON
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private:
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void dump();
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public:
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void dprintf() { if (DTRACE(Stack)) dump(); }
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#else
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public:
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void dprintf() {}
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#endif
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};
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inline bool
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StackTrace::trace(ExecContext *xc, StaticInstPtr<TheISA> inst)
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{
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if (!inst->isCall() && !inst->isReturn())
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return false;
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if (valid())
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clear();
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trace(xc, !inst->isReturn());
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return true;
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}
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#endif // __ARCH_ALPHA_STACKTRACE_HH__
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