begriffs open source - cmsis-freertos/blob - Source/portable/IAR/MSP430/portasm.h

   1 /*
   2  * FreeRTOS Kernel V10.4.3
   3  * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy of
   6  * this software and associated documentation files (the "Software"), to deal in
   7  * the Software without restriction, including without limitation the rights to
   8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
   9  * the Software, and to permit persons to whom the Software is furnished to do so,
  10  * subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in all
  13  * copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
  17  * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
  18  * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  19  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * https://www.FreeRTOS.org
  23  * https://github.com/FreeRTOS
  24  *
  25  * 1 tab == 4 spaces!
  26  */
  27
  28 #ifndef PORTASM_H
  29 #define PORTASM_H
  30
  31 portSAVE_CONTEXT macro
  32
  33                 IMPORT pxCurrentTCB
  34                 IMPORT usCriticalNesting
  35
  36                 /* Save the remaining registers. */
  37                 push    r4
  38                 push    r5
  39                 push    r6
  40                 push    r7
  41                 push    r8
  42                 push    r9
  43                 push    r10
  44                 push    r11
  45                 push    r12
  46                 push    r13
  47                 push    r14
  48                 push    r15
  49                 mov.w   &usCriticalNesting, r14
  50                 push    r14
  51                 mov.w   &pxCurrentTCB, r12
  52                 mov.w   r1, 0(r12)
  53                 endm
  54 /*-----------------------------------------------------------*/
  55
  56 portRESTORE_CONTEXT macro
  57                 mov.w   &pxCurrentTCB, r12
  58                 mov.w   @r12, r1
  59                 pop             r15
  60                 mov.w   r15, &usCriticalNesting
  61                 pop             r15
  62                 pop             r14
  63                 pop             r13
  64                 pop             r12
  65                 pop             r11
  66                 pop             r10
  67                 pop             r9
  68                 pop             r8
  69                 pop             r7
  70                 pop             r6
  71                 pop             r5
  72                 pop             r4
  73
  74                 /* The last thing on the stack will be the status register.
  75         Ensure the power down bits are clear ready for the next
  76         time this power down register is popped from the stack. */
  77                 bic.w   #0xf0,0(SP)
  78
  79                 reti
  80                 endm
  81 /*-----------------------------------------------------------*/
  82
  83 #endif
  84