122 lines
3.5 KiB
C++
122 lines
3.5 KiB
C++
/*
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* Copyright (c) 2006 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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* Authors: Nathan Binkert
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*/
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#ifndef __ARCH_X86_STACKTRACE_HH__
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#define __ARCH_X86_STACKTRACE_HH__
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#include "base/trace.hh"
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#include "cpu/static_inst.hh"
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class ThreadContext;
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namespace X86ISA
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{
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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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ThreadContext *tc;
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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(ThreadContext *_tc);
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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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ThreadContext *tc;
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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(ThreadContext *tc, bool is_call);
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public:
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StackTrace();
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StackTrace(ThreadContext *tc, StaticInstPtr inst);
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~StackTrace();
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void clear()
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{
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tc = 0;
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stack.clear();
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}
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bool valid() const { return tc != NULL; }
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bool trace(ThreadContext *tc, StaticInstPtr 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(ThreadContext *tc, StaticInstPtr 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(tc, !inst->isReturn());
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return true;
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}
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}
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#endif // __ARCH_X86_STACKTRACE_HH__
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