text: /*
   * FreeRTOS Kernel V10.0.0
   * Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy of
   * this software and associated documentation files (the "Software"), to deal in
   * the Software without restriction, including without limitation the rights to
   * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
   * the Software, and to permit persons to whom the Software is furnished to do so,
   * subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software. If you wish to use our Amazon
   * FreeRTOS name, please do so in a fair use way that does not cause confusion.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
   * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
   * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
   * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   * http://www.FreeRTOS.org
   * http://aws.amazon.com/freertos
   *
   * 1 tab == 4 spaces!
   */
  
  #ifndef PORT_ASM_H
  #define PORT_ASM_H
  
  portSAVE_CONTEXT macro
                  /* Save the remaining registers. */
  		push	r4
  		push	r5
  		push	r6
  		push	r7
  		push	r8
  		push	r9
  		push	r10
  		push	r11
  		push	r12
  		push	r13
  		push	r14
  		push	r15
  		mov.w	&_usCriticalNesting, r14
  		push	r14
  		mov.w	&_pxCurrentTCB, r12
  		mov.w	r1, @r12
  		endm
  /*-----------------------------------------------------------*/
  		
  portRESTORE_CONTEXT macro
  		mov.w	&_pxCurrentTCB, r12
  		mov.w	@r12, r1
  		pop		r15
  		mov.w	r15, &_usCriticalNesting
  		pop		r15
  		pop		r14
  		pop		r13
  		pop		r12
  		pop		r11
  		pop		r10
  		pop		r9
  		pop		r8
  		pop		r7
  		pop		r6
  		pop		r5
  		pop		r4
  
  		/* The last thing on the stack will be the status register.
                  Ensure the power down bits are clear ready for the next
                  time this power down register is popped from the stack. */
  		bic.w   #0xf0,0(SP)
  
  		reti
  		endm
  /*-----------------------------------------------------------*/
  
  #endif
  
  