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

   1 /*\r
   2     FreeRTOS V7.4.0 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME.  PLEASE VISIT\r
   5     http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
   9      *    FreeRTOS tutorial books are available in pdf and paperback.        *\r
  10      *    Complete, revised, and edited pdf reference manuals are also       *\r
  11      *    available.                                                         *\r
  12      *                                                                       *\r
  13      *    Purchasing FreeRTOS documentation will not only help you, by       *\r
  14      *    ensuring you get running as quickly as possible and with an        *\r
  15      *    in-depth knowledge of how to use FreeRTOS, it will also help       *\r
  16      *    the FreeRTOS project to continue with its mission of providing     *\r
  17      *    professional grade, cross platform, de facto standard solutions    *\r
  18      *    for microcontrollers - completely free of charge!                  *\r
  19      *                                                                       *\r
  20      *    >>> See http://www.FreeRTOS.org/Documentation for details. <<<     *\r
  21      *                                                                       *\r
  22      *    Thank you for using FreeRTOS, and thank you for your support!      *\r
  23      *                                                                       *\r
  24     ***************************************************************************\r
  25 \r
  26 \r
  27     This file is part of the FreeRTOS distribution.\r
  28 \r
  29     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  30     the terms of the GNU General Public License (version 2) as published by the\r
  31     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
  32 \r
  33     >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to\r
  34     distribute a combined work that includes FreeRTOS without being obliged to\r
  35     provide the source code for proprietary components outside of the FreeRTOS\r
  36     kernel.\r
  37 \r
  38     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  39     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  40     FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more\r
  41     details. You should have received a copy of the GNU General Public License\r
  42     and the FreeRTOS license exception along with FreeRTOS; if not itcan be\r
  43     viewed here: http://www.freertos.org/a00114.html and also obtained by\r
  44     writing to Real Time Engineers Ltd., contact details for whom are available\r
  45     on the FreeRTOS WEB site.\r
  46 \r
  47     1 tab == 4 spaces!\r
  48 \r
  49     ***************************************************************************\r
  50      *                                                                       *\r
  51      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  52      *    not run, what could be wrong?"                                     *\r
  53      *                                                                       *\r
  54      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  55      *                                                                       *\r
  56     ***************************************************************************\r
  57 \r
  58 \r
  59     http://www.FreeRTOS.org - Documentation, books, training, latest versions, \r
  60     license and Real Time Engineers Ltd. contact details.\r
  61 \r
  62     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  63     including FreeRTOS+Trace - an indispensable productivity tool, and our new\r
  64     fully thread aware and reentrant UDP/IP stack.\r
  65 \r
  66     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High \r
  67     Integrity Systems, who sell the code with commercial support, \r
  68     indemnification and middleware, under the OpenRTOS brand.\r
  69     \r
  70     http://www.SafeRTOS.com - High Integrity Systems also provide a safety \r
  71     engineered and independently SIL3 certified version for use in safety and \r
  72     mission critical applications that require provable dependability.\r
  73 */\r
  74 \r
  75 #ifndef PORT_ASM_H\r
  76 #define PORT_ASM_H\r
  77 \r
  78 portSAVE_CONTEXT macro\r
  79                 /* Save the remaining registers. */\r
  80                 push    r4\r
  81                 push    r5\r
  82                 push    r6\r
  83                 push    r7\r
  84                 push    r8\r
  85                 push    r9\r
  86                 push    r10\r
  87                 push    r11\r
  88                 push    r12\r
  89                 push    r13\r
  90                 push    r14\r
  91                 push    r15\r
  92                 mov.w   &_usCriticalNesting, r14\r
  93                 push    r14\r
  94                 mov.w   &_pxCurrentTCB, r12\r
  95                 mov.w   r1, @r12\r
  96                 endm\r
  97 /*-----------------------------------------------------------*/\r
  98                 \r
  99 portRESTORE_CONTEXT macro\r
 100                 mov.w   &_pxCurrentTCB, r12\r
 101                 mov.w   @r12, r1\r
 102                 pop             r15\r
 103                 mov.w   r15, &_usCriticalNesting\r
 104                 pop             r15\r
 105                 pop             r14\r
 106                 pop             r13\r
 107                 pop             r12\r
 108                 pop             r11\r
 109                 pop             r10\r
 110                 pop             r9\r
 111                 pop             r8\r
 112                 pop             r7\r
 113                 pop             r6\r
 114                 pop             r5\r
 115                 pop             r4\r
 116 \r
 117                 /* The last thing on the stack will be the status register.\r
 118                 Ensure the power down bits are clear ready for the next\r
 119                 time this power down register is popped from the stack. */\r
 120                 bic.w   #0xf0,0(SP)\r
 121 \r
 122                 reti\r
 123                 endm\r
 124 /*-----------------------------------------------------------*/\r
 125 \r
 126 #endif\r
 127 \r