1 files changed, 50 insertions, 0 deletions
diff --git a/hexdump.c b/hexdump.c
new file mode 100644
index 0000000..e664d3c
--- /dev/null
+++ b/hexdump.c
@@ -0,0 +1,50 @@
+#include "project.h"
+
+void
+hexdump (void *_d, int len)
+{
+  uint8_t *d = (uint8_t *) _d;
+  int i, j, k;
+  int e;
+
+  if (!d || len < 0)
+    return;
+
+  e = len + 15;
+  e &= ~15;
+
+  for (i = 0; i < e; i += 16)
+    {
+      printf (" %05x:", i);
+      for (j = 0; j < 16; ++j)
+        {
+          k = i + j;
+
+          if (k < len)
+            printf (" %02x", d[k]);
+          else
+            printf ("   ");
+
+          if (j == 7)
+            printf (" ");
+        }
+
+      printf (" ");
+      for (j = 0; j < 16; ++j)
+        {
+          k = i + j;
+          if (k < len)
+            {
+              uint8_t c = d[k];
+              if (c < 33)
+                c = '.';
+              if (c > 126)
+                c = '.';
+              printf ("%c", c);
+            }
+          if (j == 7)
+            printf (" ");
+        }
+      printf ("\n");
+    }
+}