add simple cache benchmark application

12 files changed, 144 insertions, 25 deletions

diff --git a/Makefile b/Makefile
index 3569430..0860731 100644
--- a/Makefile
+++ b/Makefile
@@ -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
diff --git a/include/esp8266/driver/uptime.h b/include/esp8266/driver/uptime.h
index 7da10cb..21740c9 100644
--- a/include/esp8266/driver/uptime.h
+++ b/include/esp8266/driver/uptime.h
@@ -1,6 +1,10 @@
 #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;
diff --git a/include/msp430fr5969lp/driver/uptime.h b/include/msp430fr5969lp/driver/uptime.h
index f18a7fe..eaa7203 100644
--- a/include/msp430fr5969lp/driver/uptime.h
+++ b/include/msp430fr5969lp/driver/uptime.h
@@ -1,6 +1,7 @@
 #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;
diff --git a/include/posix/driver/uptime.h b/include/posix/driver/uptime.h
index c92ccf1..93711b9 100644
--- a/include/posix/driver/uptime.h
+++ b/include/posix/driver/uptime.h
@@ -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;
diff --git a/src/app/bench/main.cc b/src/app/bench/main.cc
new file mode 100644
index 0000000..cdbc00f
--- /dev/null
+++ b/src/app/bench/main.cc
@@ -0,0 +1,68 @@
+#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;
+}
diff --git a/src/arch/esp8266/Makefile.inc b/src/arch/esp8266/Makefile.inc
index 3b1c8cb..0484985 100644
--- a/src/arch/esp8266/Makefile.inc
+++ b/src/arch/esp8266/Makefile.inc
@@ -46,4 +46,7 @@ arch_clean:
 	rm -f ${OBJECTS}
 	rm -f build/system.ar
 
-.PHONY: arch_clean program
+monitor:
+	screen /dev/ttyUSB0 115200
+
+.PHONY: arch_clean monitor program
diff --git a/src/arch/esp8266/driver/uptime.cc b/src/arch/esp8266/driver/uptime.cc
index 51cc617..388edb6 100644
--- a/src/arch/esp8266/driver/uptime.cc
+++ b/src/arch/esp8266/driver/uptime.cc
@@ -1,12 +1,3 @@
 #include "driver/uptime.h"
-extern "C" {
-#include "osapi.h"
-#include "user_interface.h"
-}
-
-uint32_t Uptime::get()
-{
-	return system_get_time();
-}
 
 Uptime uptime;
diff --git a/src/arch/msp430fr5969lp/Makefile.inc b/src/arch/msp430fr5969lp/Makefile.inc
index 81c8fdf..36d19c6 100644
--- a/src/arch/msp430fr5969lp/Makefile.inc
+++ b/src/arch/msp430fr5969lp/Makefile.inc
@@ -35,4 +35,7 @@ arch_clean:
 	rm -f ${OBJECTS}
 	rm -f build/system.hex
 
-.PHONY: arch_clean program
+monitor:
+	screen /dev/ttyACM1 115200
+
+.PHONY: arch_clean monitor program
diff --git a/src/arch/msp430fr5969lp/arch.cc b/src/arch/msp430fr5969lp/arch.cc
index be821a6..44a22c6 100644
--- a/src/arch/msp430fr5969lp/arch.cc
+++ b/src/arch/msp430fr5969lp/arch.cc
@@ -38,13 +38,14 @@ void Arch::setup(void)
 	__delay_cycles(1000000);
 #endif
 
+#ifdef TIMER_US
 	// 16MHz/16 -> ~1MHz timer
 	TA0CTL = TASSEL__SMCLK | ID__8 | MC__CONTINUOUS;
 	TA0EX0 = 1;
 	TA0CTL |= TACLR;
+#endif
 
-#ifdef WITH_LOOP
-
+#if defined(WITH_LOOP) || defined(TIMER_S)
 	// 1s per wakeup for loop
 	TA1CTL = TASSEL__ACLK | ID__8 | MC__UP;
 	TA1EX0 = 0;
@@ -52,6 +53,12 @@ void Arch::setup(void)
 	TA1CTL |= TACLR | TAIE;
 #endif
 
+#ifdef TIMER_CYCLES
+	TA2CTL = TASSEL__SMCLK | ID__1 | MC__CONTINUOUS;
+	TA2EX0 = 0;
+	TA2CTL |= TACLR;
+#endif
+
 	//P1OUT = 0;
 	//P4OUT = 0;
 }
@@ -64,14 +71,20 @@ void Arch::idle_loop(void)
 
 Arch arch;
 
-#ifdef WITH_LOOP
+#if defined(WITH_LOOP) || defined(TIMER_S)
 
+#include "driver/uptime.h"
 extern void loop();
 
 __attribute__((interrupt(TIMER1_A1_VECTOR))) __attribute__((wakeup)) void handle_timer0_overflow()
 {
 	if (TA1IV == 0x0e) {
+#ifdef WITH_LOOP
 		loop();
+#endif
+#ifdef TIMER_S
+		uptime.tick_s();
+#endif
 	}
 }
 
diff --git a/src/arch/msp430fr5969lp/driver/uptime.cc b/src/arch/msp430fr5969lp/driver/uptime.cc
index 6d16441..05154f9 100644
--- a/src/arch/msp430fr5969lp/driver/uptime.cc
+++ b/src/arch/msp430fr5969lp/driver/uptime.cc
@@ -1,9 +1,4 @@
 #include "driver/uptime.h"
 #include <msp430.h>
 
-uint32_t Uptime::get()
-{
-	return TA0R;
-}
-
 Uptime uptime;
diff --git a/src/arch/posix/Makefile.inc b/src/arch/posix/Makefile.inc
index 7553fd4..03b6f67 100644
--- a/src/arch/posix/Makefile.inc
+++ b/src/arch/posix/Makefile.inc
@@ -19,7 +19,11 @@ build/system.elf: ${OBJECTS}
 run: build/system.elf
 	build/system.elf
 
+monitor: run
+
+program: run
+
 arch_clean:
 	rm -f ${OBJECTS}
 
-.PHONY: arch_clean program
+.PHONY: arch_clean monitor program run
diff --git a/src/arch/posix/driver/uptime.cc b/src/arch/posix/driver/uptime.cc
index 040b51c..00b1d34 100644
--- a/src/arch/posix/driver/uptime.cc
+++ b/src/arch/posix/driver/uptime.cc
@@ -1,11 +1,25 @@
 #include "driver/uptime.h"
 #include <time.h>
 
-uint64_t Uptime::get()
+uint64_t Uptime::get_s()
 {
 	struct timespec ts;
 	clock_gettime(CLOCK_REALTIME, &ts);
-	return (uint64_t)ts.tv_nsec + (1000000ULL * ((uint64_t)ts.tv_sec % 256));
+	return ts.tv_sec;
+}
+
+uint64_t Uptime::get_us()
+{
+	struct timespec ts;
+	clock_gettime(CLOCK_REALTIME, &ts);
+	return ts.tv_nsec / 1000;
+}
+
+uint64_t Uptime::get_cycles()
+{
+	struct timespec ts;
+	clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
+	return ts.tv_nsec;
 }
 
 Uptime uptime;