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

   1 /*\r
   2     FreeRTOS V7.4.1 - 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 it can 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 PORTASM_H\r
  76 #define PORTASM_H\r
  77 \r
  78 portSAVE_CONTEXT macro\r
  79 \r
  80                 IMPORT pxCurrentTCB\r
  81                 IMPORT usCriticalNesting\r
  82 \r
  83                 /* Save the remaining registers. */\r
  84                 push    r4\r
  85                 push    r5\r
  86                 push    r6\r
  87                 push    r7\r
  88                 push    r8\r
  89                 push    r9\r
  90                 push    r10\r
  91                 push    r11\r
  92                 push    r12\r
  93                 push    r13\r
  94                 push    r14\r
  95                 push    r15\r
  96                 mov.w   &usCriticalNesting, r14\r
  97                 push    r14\r
  98                 mov.w   &pxCurrentTCB, r12\r
  99                 mov.w   r1, 0(r12)\r
 100                 endm\r
 101 /*-----------------------------------------------------------*/\r
 102                 \r
 103 portRESTORE_CONTEXT macro\r
 104                 mov.w   &pxCurrentTCB, r12\r
 105                 mov.w   @r12, r1\r
 106                 pop             r15\r
 107                 mov.w   r15, &usCriticalNesting\r
 108                 pop             r15\r
 109                 pop             r14\r
 110                 pop             r13\r
 111                 pop             r12\r
 112                 pop             r11\r
 113                 pop             r10\r
 114                 pop             r9\r
 115                 pop             r8\r
 116                 pop             r7\r
 117                 pop             r6\r
 118                 pop             r5\r
 119                 pop             r4\r
 120 \r
 121                 /* The last thing on the stack will be the status register.\r
 122         Ensure the power down bits are clear ready for the next\r
 123         time this power down register is popped from the stack. */\r
 124                 bic.w   #0xf0,0(SP)\r
 125 \r
 126                 reti\r
 127                 endm\r
 128 /*-----------------------------------------------------------*/\r
 129 \r
 130 #endif\r
 131 \r