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Diffstat (limited to 'libgloss/rs6000/mvme-read.c')
-rw-r--r-- | libgloss/rs6000/mvme-read.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/libgloss/rs6000/mvme-read.c b/libgloss/rs6000/mvme-read.c new file mode 100644 index 000000000..1c823b433 --- /dev/null +++ b/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; + } +} |