117 lines
2.8 KiB
ArmAsm
117 lines
2.8 KiB
ArmAsm
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <avr/io.h>
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.global chSysSwitchI
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chSysSwitchI:
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push r2
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push r3
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push r4
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push r5
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push r6
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push r7
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push r8
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push r9
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push r10
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push r11
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push r12
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push r13
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push r14
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push r15
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push r16
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push r17
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push r28
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push r29
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movw r30, r24 // Z <- oldp
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in r0, _SFR_IO_ADDR(SPL)
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st Z, r0
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in r0, _SFR_IO_ADDR(SPH)
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std Z+1, r0
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movw r30, r22 // Z <- newp
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ld r0, Z
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out _SFR_IO_ADDR(SPL), r0
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ldd r0, Z+1
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out _SFR_IO_ADDR(SPH), r0
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pop r29
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pop r28
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pop r17
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pop r16
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pop r15
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pop r14
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pop r13
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pop r12
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pop r11
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pop r10
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pop r9
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pop r8
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pop r7
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pop r6
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pop r5
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pop r4
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pop r3
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pop r2
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ret
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.global __vector_17
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__vector_17:
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push r0
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push r1
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push r18
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push r19
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push r20
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push r21
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push r22
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push r23
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push r24
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push r25
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push r26
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push r27
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push r30
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push r31
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in r0, _SFR_IO_ADDR(SREG)
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push r0
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clr r1
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call chSchTimerHandlerI
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intcommon:
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call chSchRescRequiredI
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tst r24
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breq noschd
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call chSchDoRescheduleI
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noschd:
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pop r0
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out _SFR_IO_ADDR(SREG), r0
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pop r31
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pop r30
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pop r27
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pop r26
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pop r25
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pop r24
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pop r23
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pop r22
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pop r21
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pop r20
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pop r19
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pop r18
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pop r1
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pop r0
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reti
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