Add %lx and %lx to printf.c

0c7ee376 · Silas Boyd-Wickizer · 070c2e4e · 0c7ee376
--- a/printf.c
+++ b/printf.c
@@ -8,7 +8,7 @@ static void
 printint(void (*putch) (void*, char), void *putarg,
 	 int xx, int base, int sgn)
 {
-  static char digits[] = "0123456789ABCDEF";
+  const static char digits[] = "0123456789ABCDEF";
  char buf[16];
  int i, neg;
  int x;
@@ -54,6 +54,9 @@ vprintfmt(void (*putch) (void*, char), void *putarg,
        printint(putch, putarg, va_arg(ap, u32), 10, 1);
      } else if(c == 'x') {
        printint(putch, putarg, va_arg(ap, u32), 16, 0);
+      } else if(c == 'l') {
+        state = 'l';
+        continue;
      } else if(c == 's'){
        s = (char*) va_arg(ap, char*);
        if(s == 0)
@@ -72,6 +75,19 @@ vprintfmt(void (*putch) (void*, char), void *putarg,
        putch(putarg, c);
      }
      state = 0;
+    } else if(state == 'l') {
+      if(c == 'x') {
+        printint(putch, putarg, va_arg(ap, u64), 16, 0);
+      }
+      else if(c == 'u') {
+        printint(putch, putarg, va_arg(ap, u64), 10, 0);
+      }
+      else {
+        // Unknown % sequence.  Print it to draw attention.
+        putch(putarg, '%');
+        putch(putarg, c);
+      }
+      state = 0;
    }
  }
 }