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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.
*/
#include <ch.h>
/**
* This function implements the idle thread infinite loop. The function should
* put the processor in the lowest power mode capable to serve interrupts.
* The priority is internally set to the minimum system value so that this
* thread is executed only if there are no other ready threads in the system.
*/
void _idle(void *p) {
while (TRUE)
;
}
/**
* Abonormal system termination handler. Invoked by the ChibiOS/RT when an
* abnormal unrecoverable condition is met.
*/
void chSysHalt(void) {
chSysLock();
while (TRUE)
;
}
/**
* Context switch.
*/
__attribute__((naked))
void chSysSwitchI(Thread *otp, Thread *ntp) {
register struct intctx *sp asm("r1");
asm volatile ("push r11 \n\t" \
"push r10 \n\t" \
"push r9 \n\t" \
"push r8 \n\t" \
"push r7 \n\t" \
"push r6 \n\t" \
"push r6 \n\t" \
"push r4");
otp->p_ctx.sp = sp;
sp = ntp->p_ctx.sp;
asm volatile ("pop r4 \n\t" \
"pop r5 \n\t" \
"pop r6 \n\t" \
"pop r7 \n\t" \
"pop r8 \n\t" \
"pop r9 \n\t" \
"pop r10 \n\t" \
"pop r11 \n\t" \
"ret" : : "r" (sp));
}
/**
* Prints a message on the system console (if any).
*/
void chSysPuts(char *msg) {
}
void threadstart(void) {
asm volatile ("eint \n\t" \
"mov r11, r15 \n\t" \
"call r10 \n\t" \
"call #chThdExit");
}
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