From 03261851a10dd2d6900a0a00a7515a0a46fb5d76 Mon Sep 17 00:00:00 2001 From: Ranjith Kumaran Date: Fri, 17 Mar 2000 22:48:54 +0000 Subject: 20000317 sourceware import --- libgloss/rs6000/mbx-outbyte.c | 71 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 libgloss/rs6000/mbx-outbyte.c (limited to 'libgloss/rs6000/mbx-outbyte.c') diff --git a/libgloss/rs6000/mbx-outbyte.c b/libgloss/rs6000/mbx-outbyte.c new file mode 100644 index 000000000..0ebf0c68a --- /dev/null +++ b/libgloss/rs6000/mbx-outbyte.c @@ -0,0 +1,71 @@ +/* + * mbx-outbyte.c -- outbyte function for targets using the eppcbug monitor + * + * Copyright (c) 1998 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. + */ + +#include "ppc-asm.h" + +static int sendbyte(char c) +{ + struct { + unsigned clun; + unsigned dlun; + char *data; + unsigned len; + unsigned rsrvd; + char buf[4]; + } ipb, *inpb; + + struct { + int status; + int cnt; + } opb, *outpb; + + inpb = &ipb; + outpb = &opb; + + inpb->clun = 0; + inpb->dlun = 0; + inpb->data = ipb.buf; + inpb->len = 1; + inpb->rsrvd = 0; + inpb->buf[0] = c; + + asm volatile ( + "mr 3,%0\n" + "mr 4,%1\n" + "li 10,0x201\n" + "sc" + : /* no outputs */ + : "r" (inpb), "r" (outpb) + : "3", "4", "10" + ); + + return (outpb->status == 0 && outpb->cnt == 1); +} + +#define GDB_QUOTE_OUTBYTES 1 + +void outbyte(char c) +{ +#ifdef GDB_QUOTE_OUTBYTES + /* + * GDB monitor.c will echo characters quoted with ^O + */ + while (!sendbyte('\017')) ; +#endif + while (!sendbyte(c)) ; +} + + -- cgit v1.2.3