Commit e9bebe25 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

add simple cache benchmark application

parent 22f23352

Makefile

+12 −0
Original line number Diff line number Diff line
@@ -7,6 +7,18 @@ CXXFLAGS = -std=c++14 


TARGETS = src/app/${app}/main.cc src/os/object/cpp_helpers.cc src/os/object/outputstream.cc



ifeq (${timer_cycles}, 1)

	COMMON_FLAGS += -DTIMER_CYCLES

endif



ifeq (${timer_us}, 1)

	COMMON_FLAGS += -DTIMER_US

endif



ifeq (${timer_s}, 1)

	COMMON_FLAGS += -DTIMER_S

endif



ifeq (${loop}, 1)

	COMMON_FLAGS += -DWITH_LOOP

endif

include/esp8266/driver/uptime.h

+12 −1
Original line number Diff line number Diff line 
#ifndef UPTIME_H

#define UPTIME_H



extern "C" {

#include "osapi.h"

#include "user_interface.h"

}

#include "c_types.h"



class Uptime {
@@ -9,7 +13,14 @@ class Uptime { 


	public:

		Uptime () {}

		uint32_t get();

		inline uint32_t get_us() { return system_get_time(); }



		inline uint32_t get_cycles()

		{

			uint32_t ccount;

			asm volatile ("esync; rsr %0,ccount":"=a" (ccount));

			return ccount;

		}

};



extern Uptime uptime;

include/msp430fr5969lp/driver/uptime.h

+4 −1
Original line number Diff line number Diff line 
#ifndef UPTIME_H

#define UPTIME_H



#include <msp430.h>

#include <stdint.h>



class Uptime {
@@ -9,7 +10,9 @@ class Uptime { 


	public:

		Uptime () {}

		uint32_t get();

		inline uint16_t get_us() { return TA0R; }

		inline uint16_t get_s() { return 0; }

		inline uint16_t get_cycles() { return TA2R; }

};



extern Uptime uptime;

include/posix/driver/uptime.h

+3 −1
Original line number Diff line number Diff line
@@ -9,7 +9,9 @@ class Uptime { 


	public:

		Uptime () {}

		uint64_t get();

		uint64_t get_s();

		uint64_t get_us();

		uint64_t get_cycles();

};



extern Uptime uptime;

src/app/bench/main.cc

0 → 100644
+68 −0
Original line number Diff line number Diff line 
#include "arch.h"

#include "driver/gpio.h"

#include "driver/stdout.h"

#include "driver/uptime.h"



#ifndef TIMER_CYCLES

#error makeflag timer_cycles=1 required

#endif





/*

 * For ESP8266: Flash reads must be 4-Byte-aligned -> uint32_t array

 */



__attribute__ ((section(".text"))) uint32_t arr[4096];

//uint32_t arr[1024];

uint16_t frob;



inline uint16_t bench_read(uint32_t *arr)

{

	uint16_t ts_pre, ts_post;

	ts_pre = uptime.get_cycles();

	frob += *arr;

	ts_post = uptime.get_cycles();

	return ts_post - ts_pre;

}



int main(void)

{

	arch.setup();

	gpio.setup();

	kout.setup();



	uint16_t ts1 = uptime.get_cycles();

	uint16_t ts2 = uptime.get_cycles();

	uint16_t ts3 = uptime.get_cycles();

	uint16_t ts4 = uptime.get_cycles();

	uint16_t i;



	//for (i = 0; i < 1024; i++) {

	//	arr[i] = 1;

	//}



	gpio.led_on(0);

	kout << "Hello, World!" << endl;

	kout << "Test, World!" << endl;

	kout << dec << ts1 << endl;

	kout << dec << ts2 << endl;

	kout << dec << ts3 << endl;

	kout << dec << ts4 << endl;



	for (int i = 0; i < sizeof(arr) / sizeof(uint32_t); i++) {

		kout << i << ": " << bench_read(&arr[i]) << endl;

	}

	for (signed int i = (sizeof(arr) / sizeof(uint32_t)) - 1; i >= 0; i--) {

		kout << i << ": " << bench_read(&arr[i]) << endl;

	}

	kout << frob << endl;



	arch.idle_loop();



	//uart_setup();

	//uart_puts("\n" COL_YELLOW "dOS" COL_GREEN " > " COL_RESET);



	//arch_idle_loop();



	return 0;

}