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Diffstat (limited to 'libgloss/m68k/idp-outbyte.c')
-rw-r--r-- | libgloss/m68k/idp-outbyte.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/libgloss/m68k/idp-outbyte.c b/libgloss/m68k/idp-outbyte.c deleted file mode 100644 index a95dc0c..0000000 --- a/libgloss/m68k/idp-outbyte.c +++ /dev/null @@ -1,74 +0,0 @@ -/* idp-outbyte.c - * Copyright (c) 1995 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 <_ansi.h> -#include "mc68681reg.h" - -/* - * The DUART is mapped into the IDP address space in an unusual - * manner. The mc68681 is an 8 bit device located on the least - * significant byte (byte0) of the data bus. Bytes 3, 2, and - * one have nothing in them and writes to these locations are - * not valid. - */ - -#define DUART_ADDR 0x00B00000 -#define READREG(x) (*((volatile char *) DUART_ADDR + (x * 4) + 3)) -#define WRITEREG(x, y) (*((char *) DUART_ADDR + (x * 4) + 3) = y) - -/* - * raw_outbyte -- send a byte to the DUART buffer. This only sends - * to channel A. - */ -static void -_DEFUN (raw_outbyte, (byte), - char byte) -{ - /* First, wait for the UART to finish clocking out the last - character we sent, if any. Then, give it the next character to - work on. By waiting first, then handing off a new character, we - allow the UART to work while the processor (perhaps) does other - things; if we waited after sending each character, there'd be no - opportunity for parallelism. */ - while ((READREG (DUART_SRA) & 0x04) == 0x00) - ; - - WRITEREG (DUART_TBA, byte); /* write the byte */ -} - - -/* - * outbyte -- send BYTE out the DUART's channel A, for display to - * the user. - * - * Normally, this is identical to raw_outbyte, but if - * GDB_MONITOR_OUTPUT is #defined, we prefix each byte we send - * with a ^O character (ASCII 15). This is a signal to GDB's - * `rom68k' target to pass the character directly on to the user; - * it allows programs to do console output under GDB. - * - * We compile this file twice: once with GDB_MONITOR_OUTPUT - * #defined, and once without. The former .o file we put in - * libidpgdb.a, which is included in the link by idpgdb.ld; the - * latter we put in libidp.a, which is selected by idp.ld. - */ -void -_DEFUN (outbyte, (byte), - char byte) -{ -#ifdef GDB_MONITOR_OUTPUT - raw_outbyte (0x0f); -#endif - raw_outbyte (byte); -} |