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[/] [coremark/] [steel/] [core_portme.c] - Blame information for rev 11

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1 11 rafaelcalc
/*
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Copyright 2018 Embedded Microprocessor Benchmark Consortium (EEMBC)
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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    http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Original Author: Shay Gal-on
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*/
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#include "coremark.h"
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#include "core_portme.h"
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#if VALIDATION_RUN
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volatile ee_s32 seed1_volatile = 0x3415;
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volatile ee_s32 seed2_volatile = 0x3415;
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volatile ee_s32 seed3_volatile = 0x66;
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#endif
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#if PERFORMANCE_RUN
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volatile ee_s32 seed1_volatile = 0x0;
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volatile ee_s32 seed2_volatile = 0x0;
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volatile ee_s32 seed3_volatile = 0x66;
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#endif
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#if PROFILE_RUN
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volatile ee_s32 seed1_volatile = 0x8;
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volatile ee_s32 seed2_volatile = 0x8;
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volatile ee_s32 seed3_volatile = 0x8;
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#endif
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volatile ee_s32 seed4_volatile = ITERATIONS;
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volatile ee_s32 seed5_volatile = 0;
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/* Porting : Timing functions
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        How to capture time and convert to seconds must be ported to whatever is
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   supported by the platform. e.g. Read value from on board RTC, read value from
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   cpu clock cycles performance counter etc. Sample implementation for standard
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   time.h and windows.h definitions included.
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*/
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CORETIMETYPE
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barebones_clock()
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{
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register unsigned int temp __asm__ ("t0");
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__asm__(
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    "csrr t0, cycle\n\t"
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);
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unsigned int ticks = temp;
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return temp;
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//#error \
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    "You must implement a method to measure time in barebones_clock()! This function should return current time.\n"
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}
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/* Define : TIMER_RES_DIVIDER
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        Divider to trade off timer resolution and total time that can be
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   measured.
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        Use lower values to increase resolution, but make sure that overflow
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   does not occur. If there are issues with the return value overflowing,
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   increase this value.
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        */
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#define CLOCKS_PER_SEC             50000000
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#define GETMYTIME(_t)              (*_t = barebones_clock())
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#define MYTIMEDIFF(fin, ini)       ((fin) - (ini))
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#define TIMER_RES_DIVIDER          1
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#define SAMPLE_TIME_IMPLEMENTATION 1
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#define EE_TICKS_PER_SEC           (CLOCKS_PER_SEC / TIMER_RES_DIVIDER)
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/** Define Host specific (POSIX), or target specific global time variables. */
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static CORETIMETYPE start_time_val, stop_time_val;
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/* Function : start_time
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        This function will be called right before starting the timed portion of
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   the benchmark.
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        Implementation may be capturing a system timer (as implemented in the
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   example code) or zeroing some system parameters - e.g. setting the cpu clocks
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   cycles to 0.
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*/
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void
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start_time(void)
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{
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    GETMYTIME(&start_time_val);
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}
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/* Function : stop_time
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        This function will be called right after ending the timed portion of the
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   benchmark.
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        Implementation may be capturing a system timer (as implemented in the
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   example code) or other system parameters - e.g. reading the current value of
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   cpu cycles counter.
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*/
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void
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stop_time(void)
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{
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    GETMYTIME(&stop_time_val);
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}
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/* Function : get_time
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        Return an abstract "ticks" number that signifies time on the system.
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        Actual value returned may be cpu cycles, milliseconds or any other
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   value, as long as it can be converted to seconds by <time_in_secs>. This
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   methodology is taken to accomodate any hardware or simulated platform. The
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   sample implementation returns millisecs by default, and the resolution is
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   controlled by <TIMER_RES_DIVIDER>
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*/
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CORE_TICKS
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get_time(void)
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{
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    CORE_TICKS elapsed
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        = (CORE_TICKS)(MYTIMEDIFF(stop_time_val, start_time_val));
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    return elapsed;
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}
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/* Function : time_in_secs
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        Convert the value returned by get_time to seconds.
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        The <secs_ret> type is used to accomodate systems with no support for
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   floating point. Default implementation implemented by the EE_TICKS_PER_SEC
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   macro above.
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*/
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secs_ret
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time_in_secs(CORE_TICKS ticks)
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{
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    secs_ret retval = ((secs_ret)ticks) / (secs_ret)EE_TICKS_PER_SEC;
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    return retval;
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}
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ee_u32 default_num_contexts = 1;
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/* Function : portable_init
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        Target specific initialization code
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        Test for some common mistakes.
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*/
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void
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portable_init(core_portable *p, int *argc, char *argv[])
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{
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//#error \
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    "Call board initialization routines in portable init (if needed), in particular initialize UART!\n"
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    if (sizeof(ee_ptr_int) != sizeof(ee_u8 *))
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    {
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        ee_printf(
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            "ERROR! Please define ee_ptr_int to a type that holds a "
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            "pointer!\n");
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    }
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    if (sizeof(ee_u32) != 4)
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    {
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        ee_printf("ERROR! Please define ee_u32 to a 32b unsigned type!\n");
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    }
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    p->portable_id = 1;
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}
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/* Function : portable_fini
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        Target specific final code
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*/
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void
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portable_fini(core_portable *p)
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{
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    p->portable_id = 0;
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    for(;;);
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}

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