new function PUTX2 to display an int as an 8 bits hexadecimal

common/utils/T/tracer/utils.c

@@ -190,6 +190,13 @@ void PUTI(OBUF *o, int i)
   PUTS(o, s);
 }
 
+void PUTX2(OBUF *o, int i)
+{
+  char s[64];
+  sprintf(s, "%2.2x", i);
+  PUTS(o, s);
+}
+
 void PUTUL(OBUF *o, unsigned long l)
 {
   char s[128];

common/utils/T/tracer/utils.h

@@ -44,6 +44,7 @@ void PUTC(OBUF *o, char c);
 void PUTS(OBUF *o, char *s);
 void PUTS_CLEAN(OBUF *o, char *s);
 void PUTI(OBUF *o, int i);
+void PUTX2(OBUF *o, int i);
 void PUTUL(OBUF *o, unsigned long i);
 
 #endif /* _UTILS_H_ */