initial commit

FIRMWARE/DHRYSTONE/stubs.c

@@ -0,0 +1,56 @@
+#include <stdint.h>
+#include <perf.h>
+
+uint64_t time() {
+    return rdcycle();
+}
+
+uint64_t insn() {
+    return rdinstret();
+}
+
+char *strcpy(char *dest, const char *src) {
+   char* result = dest;
+   while(*dest++=*src++);
+   return result;
+}
+
+int strcmp (const char *p1, const char *p2)  {
+   const unsigned char *s1 = (const unsigned char *) p1;
+   const unsigned char *s2 = (const unsigned char *) p2;
+   unsigned char c1, c2;
+   do {
+      c1 = (unsigned char) *s1++;
+      c2 = (unsigned char) *s2++;
+      if (c1 == '\0') {
+	 return c1 - c2;
+      }
+   }
+   while (c1 == c2);
+   return c1 - c2;
+}
+
+/*************************************************************/
+
+// Print "fixed point" number (integer/1000)
+void printk(uint64_t kx) {
+    int intpart  = (int)(kx / 1000);
+    int fracpart = (int)(kx % 1000);
+    printf("%d.",intpart);
+    if(fracpart<100) {
+	printf("0");
+    }
+    if(fracpart<10) {
+	printf("0");
+    }
+    printf("%d",fracpart);
+}
+
+void show_CPI_2() {
+   uint64_t instret = rdinstret();
+   uint64_t cycles  = rdcycle();
+   uint64_t kCPI    = cycles*1000/instret;
+   printf(">>> CPI ="); printk(kCPI); printf("\n");
+   printf(">>> instret = %d\n", (int)(instret));
+   printf(">>> cycles  = %d\n", (int)(cycles));   
+}