Benchmark suite using simulators

1 files changed, 39 insertions, 0 deletions

diff --git a/benchmarks/interface-avr.c b/benchmarks/interface-avr.c
new file mode 100644
index 0000000..02731aa
--- /dev/null
+++ b/benchmarks/interface-avr.c
@@ -0,0 +1,39 @@
+#include <avr/io.h>
+#include <stdio.h>
+#include "interface.h"
+#include <stdint.h>
+
+#define special_output_port (*((volatile char *)0x20))
+static int output_char(char c, FILE *stream)
+{
+    special_output_port = c;
+    return 0;
+}
+
+static FILE mystdout = FDEV_SETUP_STREAM(output_char, NULL, _FDEV_SETUP_WRITE);
+
+void interface_init()
+{
+    // Set timer 1 to count cycles
+    TCCR1B = 1;
+    
+    // Set output to simulator
+    stdout = &mystdout;
+    stderr = &mystdout;
+}
+
+
+void start_timing()
+{
+    TCNT1 = 0;
+}
+
+uint16_t end_timing()
+{
+    return TCNT1 - 9;
+}
+
+void print_value(const char *label, int32_t value)
+{
+    printf("%-20s %ld\n", label, value);
+}