git.sur5r.net Git - freertos/blob - Source/portable/Rowley/MSP430F449/portasm.h

   1 /*\r
   2     FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.\r
   3         \r
   4 \r
   5     ***************************************************************************\r
   6      *                                                                       *\r
   7      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
   8      *    Complete, revised, and edited pdf reference manuals are also       *\r
   9      *    available.                                                         *\r
  10      *                                                                       *\r
  11      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
  12      *    ensuring you get running as quickly as possible and with an        *\r
  13      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  14      *    the FreeRTOS project to continue with its mission of providing     *\r
  15      *    professional grade, cross platform, de facto standard solutions    *\r
  16      *    for microcontrollers - completely free of charge!                  *\r
  17      *                                                                       *\r
  18      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
  19      *                                                                       *\r
  20      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  21      *                                                                       *\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 modification to the GPL is included to allow you to\r
  31     distribute a combined work that includes FreeRTOS without being obliged to\r
  32     provide the source code for proprietary components outside of the FreeRTOS\r
  33     kernel.  FreeRTOS is distributed in the hope that it will be useful, but\r
  34     WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
  35     or 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     ***************************************************************************\r
  45      *                                                                       *\r
  46      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  47      *    not run, what could be wrong?                                      *\r
  48      *                                                                       *\r
  49      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  50      *                                                                       *\r
  51     ***************************************************************************\r
  52 \r
  53     \r
  54     http://www.FreeRTOS.org - Documentation, training, latest information, \r
  55     license and contact details.\r
  56     \r
  57     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  58     including FreeRTOS+Trace - an indispensable productivity tool.\r
  59 \r
  60     Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell \r
  61     the code with commercial support, indemnification, and middleware, under \r
  62     the OpenRTOS brand: http://www.OpenRTOS.com.  High Integrity Systems also\r
  63     provide a safety engineered and independently SIL3 certified version under \r
  64     the SafeRTOS brand: http://www.SafeRTOS.com.\r
  65 */\r
  66 \r
  67 #ifndef PORT_ASM_H\r
  68 #define PORT_ASM_H\r
  69 \r
  70 portSAVE_CONTEXT macro\r
  71                 /* Save the remaining registers. */\r
  72                 push    r4\r
  73                 push    r5\r
  74                 push    r6\r
  75                 push    r7\r
  76                 push    r8\r
  77                 push    r9\r
  78                 push    r10\r
  79                 push    r11\r
  80                 push    r12\r
  81                 push    r13\r
  82                 push    r14\r
  83                 push    r15\r
  84                 mov.w   &_usCriticalNesting, r14\r
  85                 push    r14\r
  86                 mov.w   &_pxCurrentTCB, r12\r
  87                 mov.w   r1, @r12\r
  88                 endm\r
  89 /*-----------------------------------------------------------*/\r
  90                 \r
  91 portRESTORE_CONTEXT macro\r
  92                 mov.w   &_pxCurrentTCB, r12\r
  93                 mov.w   @r12, r1\r
  94                 pop             r15\r
  95                 mov.w   r15, &_usCriticalNesting\r
  96                 pop             r15\r
  97                 pop             r14\r
  98                 pop             r13\r
  99                 pop             r12\r
 100                 pop             r11\r
 101                 pop             r10\r
 102                 pop             r9\r
 103                 pop             r8\r
 104                 pop             r7\r
 105                 pop             r6\r
 106                 pop             r5\r
 107                 pop             r4\r
 108 \r
 109                 /* The last thing on the stack will be the status register.\r
 110                 Ensure the power down bits are clear ready for the next\r
 111                 time this power down register is popped from the stack. */\r
 112                 bic.w   #0xf0,0(SP)\r
 113 \r
 114                 reti\r
 115                 endm\r
 116 /*-----------------------------------------------------------*/\r
 117 \r
 118 #endif\r
 119 \r