/* * Copyright (c) 2005 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. * * Authors: Nathan Binkert */ #ifndef __ARCH_ALPHA_STACKTRACE_HH__ #define __ARCH_ALPHA_STACKTRACE_HH__ #include "base/trace.hh" #include "cpu/static_inst.hh" class ExecContext; class StackTrace; class ProcessInfo { private: ExecContext *xc; int thread_info_size; int task_struct_size; int task_off; int pid_off; int name_off; public: ProcessInfo(ExecContext *_xc); Addr task(Addr ksp) const; int pid(Addr ksp) const; std::string name(Addr ksp) const; }; class StackTrace { protected: typedef TheISA::MachInst MachInst; private: ExecContext *xc; std::vector stack; private: bool isEntry(Addr addr); bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra); bool decodeSave(MachInst inst, int ®, int &disp); bool decodeStack(MachInst inst, int &disp); void trace(ExecContext *xc, bool is_call); public: StackTrace(); StackTrace(ExecContext *xc, StaticInstPtr inst); ~StackTrace(); void clear() { xc = 0; stack.clear(); } bool valid() const { return xc != NULL; } bool trace(ExecContext *xc, StaticInstPtr inst); public: const std::vector &getstack() const { return stack; } static const int user = 1; static const int console = 2; static const int unknown = 3; #if TRACING_ON private: void dump(); public: void dprintf() { if (DTRACE(Stack)) dump(); } #else public: void dprintf() {} #endif }; inline bool StackTrace::trace(ExecContext *xc, StaticInstPtr inst) { if (!inst->isCall() && !inst->isReturn()) return false; if (valid()) clear(); trace(xc, !inst->isReturn()); return true; } #endif // __ARCH_ALPHA_STACKTRACE_HH__