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Diffstat (limited to 'libgloss/mcore/cmb-outbyte.c')
-rw-r--r-- | libgloss/mcore/cmb-outbyte.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/libgloss/mcore/cmb-outbyte.c b/libgloss/mcore/cmb-outbyte.c new file mode 100644 index 000000000..ea2aaef8b --- /dev/null +++ b/libgloss/mcore/cmb-outbyte.c @@ -0,0 +1,46 @@ +/* cmb-outbyte.c -- outbyte function for CMB1200 eval board. + * + * Copyright (c) 1999 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> + +#define _TX 0x40 +#define _SR 0x86 + +#define UART0_BASE 0x10009000 +#define UART1_BASE 0x1000a000 + +#define UART_BASE UART0_BASE + +#define TXREG ((volatile unsigned short *)(UART_BASE + _TX)) +#define SRREG ((volatile unsigned short *)(UART_BASE + _SR)) + +#define TRDY 0x2000 + +#define GDB_QUOTE_CHAR 15 /* ^O */ + +/* + * outbyte -- send a byte to the UART. + */ +void +_DEFUN (outbyte, (ch), + char ch) +{ + while (!(*SRREG & TRDY)) + ; + *TXREG = GDB_QUOTE_CHAR; + + while (!(*SRREG & TRDY)) + ; + *TXREG = (unsigned short)ch; +} |