From c78cbf49c4edf2f9ca9e56d4b87a5d6ef08b7fed Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 30 Sep 2005 13:59:37 +0100 Subject: Support for MIPSsim, the cycle accurate MIPS simulator. Signed-off-by: Ralf Baechle --- arch/mips/mips-boards/sim/sim_printf.c | 74 ++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 arch/mips/mips-boards/sim/sim_printf.c (limited to 'arch/mips/mips-boards/sim/sim_printf.c') diff --git a/arch/mips/mips-boards/sim/sim_printf.c b/arch/mips/mips-boards/sim/sim_printf.c new file mode 100644 index 000000000000..3ee5a0b501a6 --- /dev/null +++ b/arch/mips/mips-boards/sim/sim_printf.c @@ -0,0 +1,74 @@ +/* + * Carsten Langgaard, carstenl@mips.com + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Putting things on the screen/serial line using YAMONs facilities. + */ +#include +#include +#include +#include +#include +#include + +static inline unsigned int serial_in(int offset) +{ + return inb(0x3f8 + offset); +} + +static inline void serial_out(int offset, int value) +{ + outb(value, 0x3f8 + offset); +} + +int putPromChar(char c) +{ + while ((serial_in(UART_LSR) & UART_LSR_THRE) == 0) + ; + + serial_out(UART_TX, c); + + return 1; +} + +char getPromChar(void) +{ + while (!(serial_in(UART_LSR) & 1)) + ; + + return serial_in(UART_RX); +} + +void prom_printf(char *fmt, ...) +{ + va_list args; + int l; + char *p, *buf_end; + char buf[1024]; + + va_start(args, fmt); + l = vsprintf(buf, fmt, args); /* hopefully i < sizeof(buf) */ + va_end(args); + + buf_end = buf + l; + + for (p = buf; p < buf_end; p++) { + /* Crude cr/nl handling is better than none */ + if (*p == '\n') + putPromChar('\r'); + putPromChar(*p); + } +} -- cgit v1.2.2