--- tboot/common/vsprintf.c	2010-06-22 15:41:16.000000000 -0700
+++ tboot/common/test_vsprintf.c	2010-06-22 15:42:26.000000000 -0700
@@ -33,12 +33,13 @@
  *
  */
 
-#include <types.h>
+/* unit test code, should test it on i386 arch */
+#include <stdint.h>
 #include <stdbool.h>
 #include <string.h>
-#include <misc.h>
-#include <div64.h>
-#include <compiler.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include "../include/div64.h"
 
 /*
  * write the character into the buffer
@@ -421,6 +422,58 @@ int snprintf(char *buf, size_t size, con
     return count;
 }
 
+void myprintf(const char *fmt, ...)
+{
+    char buf[256];
+    int n;
+    va_list ap;
+    int i;
+
+    memset(buf, '\0', sizeof(buf));
+    va_start(ap, fmt);
+    n = vscnprintf(buf, sizeof(buf), fmt, ap);
+    va_end(ap);
+
+    /* print */
+    for ( i = 0; i < n; i++ )
+        printf("%c", buf[i]);
+}
+
+int main(void)
+{
+    int nums[] = {-20000, -1, 0, 200, 0xFFFE, 0xFFFFFFFE};
+    int i, j;
+
+    for ( j = 0; j < sizeof(nums); j++ ) {
+        i = nums[j];
+
+        printf("%c,%s,%d,%o,%x,%X,%u,%p\n", 'a', "abc", i, i, i, i, i, &i);
+        myprintf("%c,%s,%d,%o,%x,%X,%u,%p\n", 'a', "abc", i, i, i, i, i, &i);
+        printf("%-+ 10.4d,%-+ 10.3u\n", i, i);
+        myprintf("%-+ 10.4d,%-+ 10.3u\n", i, i);
+        printf("%-+ 10d,%-+ 10u\n", i, i);
+        myprintf("%-+ 10d,%-+ 10u\n", i, i);
+        printf("%-+.3d,%-+.3u\n", i, i);
+        myprintf("%-+.3d,%-+.3u\n", i, i);
+        printf("%.3-+d,%.3-+u\n", i, i);
+        myprintf("%.3-+d,%.3-+u\n", i, i);
+        printf("%d.3-+,%d.3-+u\n", i, i);
+        myprintf("%d.3-+,%d.3-+u\n", i, i);
+        printf("%+0d,%+0d\n", -i, i);
+        myprintf("%+0d,%+0d\n", -i, i);
+        printf("%#o,%#x,%#X\n", i, i, i);
+        myprintf("%#o,%#x,%#X\n", i, i, i);
+        printf("%lld,%Ld,%Lld,%llld\n", i, i, i, i);
+        myprintf("%lld,%Ld,%Lld,%llld\n", i, i, i, i);
+        printf("%d,%d\n", i);
+        myprintf("%d,%d\n", i);
+        printf("%%%%%%%%%%\n");
+        myprintf("%%%%%%%%%%\n");
+    }
+
+    return 0;
+}
+
 /*
  * Local variables:
  * mode: C