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115 lines
3.2 KiB
115 lines
3.2 KiB
/*
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* \file trc_ret_stack.h
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* \brief OpenCSD : trace decoder return stack feature.
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*
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* \copyright Copyright (c) 2017, ARM Limited. All Rights Reserved.
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*/
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/*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY 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 OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef ARM_TRC_RET_STACK_H_INCLUDED
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#define ARM_TRC_RET_STACK_H_INCLUDED
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#include "opencsd/ocsd_if_types.h"
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// uncomment below for return stack logging
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// #define TRC_RET_STACK_DEBUG
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#ifdef TRC_RET_STACK_DEBUG
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class TraceComponent;
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#endif
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typedef struct _retStackElement
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{
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ocsd_vaddr_t ret_addr;
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ocsd_isa ret_isa;
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} retStackElement;
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class TrcAddrReturnStack
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{
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public:
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TrcAddrReturnStack();
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~TrcAddrReturnStack() {};
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void set_active(bool active)
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{
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m_active = active;
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};
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bool is_active() const
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{
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return m_active;
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};
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void push(const ocsd_vaddr_t addr, const ocsd_isa isa);
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ocsd_vaddr_t pop(ocsd_isa &isa);
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void flush();
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bool overflow() const
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{
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return (bool)(num_entries < 0);
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};
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void set_pop_pending()
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{
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if (m_active)
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m_pop_pending = true;
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}
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void clear_pop_pending()
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{
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m_pop_pending = false;
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}
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bool pop_pending() const
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{
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return m_pop_pending;
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};
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private:
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bool m_active;
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bool m_pop_pending; // flag for decoder to indicate a pop might be needed depending on the next packet (ETMv4)
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int head_idx;
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int num_entries;
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retStackElement m_stack[16];
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#ifdef TRC_RET_STACK_DEBUG
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public:
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void set_dbg_logger(TraceComponent *pLogger) { m_p_debug_logger = pLogger; };
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private:
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void LogOp(const char *pszOpString, ocsd_vaddr_t addr, int head_off, ocsd_isa isa);
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TraceComponent *m_p_debug_logger;
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#endif // TRC_RET_STACK_DEBUG
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};
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#endif // ARM_TRC_RET_STACK_H_INCLUDED
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/* End of File trc_ret_stack.h */
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