20000317 sourceware import

libgloss/rs6000/mvme-read.c

@@ -0,0 +1,49 @@
+/* mvme-read.c -- read bytes from a input device.
+ * 
+ * Copyright (c) 1996 Cygnus Support
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply.
+ */
+
+extern int inbyte ();
+extern char * __inln ();
+
+/*
+ * read  -- read bytes from the serial port. Ignore fd, since
+ *          we only have stdin.
+ */
+int
+read (fd, buf, nbytes)
+     int fd;
+     char *buf;
+     int nbytes;
+{
+  if (nbytes >= 256)
+    {
+      char *read_end = __inln (buf);
+      *read_end = '\n';
+      return read_end - buf + 1;
+    }
+  else
+    {
+      int i, c;
+      for (i = 0; i < nbytes; i++) {
+	*buf++ = c = inbyte ();
+	if (c == '\n' || c == '\r') {
+	  buf[-1] = '\n';	/* convert \r to \n */
+	  buf[0] = '\0';
+	  break;
+	}
+      }
+
+      return i;
+    }
+}