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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2010-04-09 fify the first version
* 2010-04-19 fify rewrite rt_hw_interrupt_disable/enable fuction
* 2010-04-20 fify move peripheral ISR to bsp/interrupts.s34
*/
.section .text
.globl _rt_interrupt_from_thread
.globl _rt_interrupt_to_thread
.global _os_context_switch
.type _os_context_switch, @function
_os_context_switch:
PUSHM R0,R1,R2,R3,A0,A1,SB,FB
MOV.W _rt_interrupt_from_thread, A0
STC ISP, [A0]
MOV.W _rt_interrupt_to_thread, A0
LDC [A0], ISP
POPM R0,R1,R2,R3,A0,A1,SB,FB ; Restore registers from the new task's stack
REIT ; Return from interrup
/*
* void rt_hw_context_switch_to(rt_uint32 to);
* this fucntion is used to perform the first thread switch
*/
.global _rt_hw_context_switch_to
.type _rt_hw_context_switch_to, @function
_rt_hw_context_switch_to:
ENTER #0x0
MOV.W 0x5[FB], A0
LDC [A0], ISP
POPM R0,R1,R2,R3,A0,A1,SB,FB
REIT
.end
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