git.sur5r.net Git - freertos/blob - Source/portable/IAR/MSP430/portasm.h

   1 /*\r
   2     FreeRTOS V6.0.4 - Copyright (C) 2010 Real Time Engineers Ltd.\r
   3 \r
   4     ***************************************************************************\r
   5     *                                                                         *\r
   6     * If you are:                                                             *\r
   7     *                                                                         *\r
   8     *    + New to FreeRTOS,                                                   *\r
   9     *    + Wanting to learn FreeRTOS or multitasking in general quickly       *\r
  10     *    + Looking for basic training,                                        *\r
  11     *    + Wanting to improve your FreeRTOS skills and productivity           *\r
  12     *                                                                         *\r
  13     * then take a look at the FreeRTOS eBook                                  *\r
  14     *                                                                         *\r
  15     *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *\r
  16     *                  http://www.FreeRTOS.org/Documentation                  *\r
  17     *                                                                         *\r
  18     * A pdf reference manual is also available.  Both are usually delivered   *\r
  19     * to your inbox within 20 minutes to two hours when purchased between 8am *\r
  20     * and 8pm GMT (although please allow up to 24 hours in case of            *\r
  21     * exceptional circumstances).  Thank you for your support!                *\r
  22     *                                                                         *\r
  23     ***************************************************************************\r
  24 \r
  25     This file is part of the FreeRTOS distribution.\r
  26 \r
  27     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  28     the terms of the GNU General Public License (version 2) as published by the\r
  29     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  30     ***NOTE*** The exception to the GPL is included to allow you to distribute\r
  31     a combined work that includes FreeRTOS without being obliged to provide the\r
  32     source code for proprietary components outside of the FreeRTOS kernel.\r
  33     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT\r
  34     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or\r
  35     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for\r
  36     more details. You should have received a copy of the GNU General Public \r
  37     License and the FreeRTOS license exception along with FreeRTOS; if not it \r
  38     can be viewed here: http://www.freertos.org/a00114.html and also obtained \r
  39     by writing to Richard Barry, contact details for whom are available on the\r
  40     FreeRTOS WEB site.\r
  41 \r
  42     1 tab == 4 spaces!\r
  43 \r
  44     http://www.FreeRTOS.org - Documentation, latest information, license and\r
  45     contact details.\r
  46 \r
  47     http://www.SafeRTOS.com - A version that is certified for use in safety\r
  48     critical systems.\r
  49 \r
  50     http://www.OpenRTOS.com - Commercial support, development, porting,\r
  51     licensing and training services.\r
  52 */\r
  53 \r
  54 #ifndef PORTASM_H\r
  55 #define PORTASM_H\r
  56 \r
  57 portSAVE_CONTEXT macro\r
  58 \r
  59                 IMPORT pxCurrentTCB\r
  60                 IMPORT usCriticalNesting\r
  61 \r
  62                 /* Save the remaining registers. */\r
  63                 push    r4\r
  64                 push    r5\r
  65                 push    r6\r
  66                 push    r7\r
  67                 push    r8\r
  68                 push    r9\r
  69                 push    r10\r
  70                 push    r11\r
  71                 push    r12\r
  72                 push    r13\r
  73                 push    r14\r
  74                 push    r15\r
  75                 mov.w   &usCriticalNesting, r14\r
  76                 push    r14\r
  77                 mov.w   &pxCurrentTCB, r12\r
  78                 mov.w   r1, 0(r12)\r
  79                 endm\r
  80 /*-----------------------------------------------------------*/\r
  81                 \r
  82 portRESTORE_CONTEXT macro\r
  83                 mov.w   &pxCurrentTCB, r12\r
  84                 mov.w   @r12, r1\r
  85                 pop             r15\r
  86                 mov.w   r15, &usCriticalNesting\r
  87                 pop             r15\r
  88                 pop             r14\r
  89                 pop             r13\r
  90                 pop             r12\r
  91                 pop             r11\r
  92                 pop             r10\r
  93                 pop             r9\r
  94                 pop             r8\r
  95                 pop             r7\r
  96                 pop             r6\r
  97                 pop             r5\r
  98                 pop             r4\r
  99 \r
 100                 /* The last thing on the stack will be the status register.\r
 101         Ensure the power down bits are clear ready for the next\r
 102         time this power down register is popped from the stack. */\r
 103                 bic.w   #0xf0,0(SP)\r
 104 \r
 105                 reti\r
 106                 endm\r
 107 /*-----------------------------------------------------------*/\r
 108 \r
 109 #endif\r
 110 \r