From e9fab7dc99a0e7c22b511c5919adf7df85213252 Mon Sep 17 00:00:00 2001 From: Keith Packard Date: Thu, 25 Aug 2011 22:04:36 -0700 Subject: altos: add GCC/SDCC compat macros, init_stack, save_context and GCC stdio hooks More arch-indepdency bits. GCC stdio is different from SDCC, so create suitable code in avr/ao_avr_stdio.c Create macros to initialize the task stack frame and save the task context. Add GCC/SDCC type definition compatibility macros Signed-off-by: Keith Packard --- src/avr/ao_avr_stdio.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 src/avr/ao_avr_stdio.c (limited to 'src/avr/ao_avr_stdio.c') diff --git a/src/avr/ao_avr_stdio.c b/src/avr/ao_avr_stdio.c new file mode 100644 index 00000000..2f358eb5 --- /dev/null +++ b/src/avr/ao_avr_stdio.c @@ -0,0 +1,52 @@ +/* + * Copyright © 2011 Keith Packard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that 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. + */ + +#include "ao.h" + +int +stdio_put(char c, FILE *stream) +{ + if (ao_cur_task && ao_num_stdios) + putchar(c); + else + { + if (c == '\n') + stdio_put('\r', stream); + loop_until_bit_is_set(UCSR1A, UDRE1); + UDR1 = c; + } + + return 0; +} + +int +stdio_get(FILE *stream) +{ + return (int) getchar() & 0xff; +} + +static FILE mystdout = FDEV_SETUP_STREAM(stdio_put, NULL, _FDEV_SETUP_WRITE); + +static FILE mystdin = FDEV_SETUP_STREAM(NULL, stdio_get, _FDEV_SETUP_READ); + +void +ao_stdio_init(void) +{ + stdout = &mystdout; + stdin = &mystdin; + printf("%d stdios registered\n", ao_num_stdios); +} -- cgit v1.2.3