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

   1 /*\r
   2     FreeRTOS V8.1.1 - Copyright (C) 2014 Real Time Engineers Ltd. \r
   3     All rights reserved\r
   4 \r
   5     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   6 \r
   7     ***************************************************************************\r
   8      *                                                                       *\r
   9      *    FreeRTOS provides completely free yet professionally developed,    *\r
  10      *    robust, strictly quality controlled, supported, and cross          *\r
  11      *    platform software that has become a de facto standard.             *\r
  12      *                                                                       *\r
  13      *    Help yourself get started quickly and support the FreeRTOS         *\r
  14      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  15      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  16      *                                                                       *\r
  17      *    Thank you!                                                         *\r
  18      *                                                                       *\r
  19     ***************************************************************************\r
  20 \r
  21     This file is part of the FreeRTOS distribution.\r
  22 \r
  23     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  24     the terms of the GNU General Public License (version 2) as published by the\r
  25     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  26 \r
  27     >>!   NOTE: The modification to the GPL is included to allow you to     !<<\r
  28     >>!   distribute a combined work that includes FreeRTOS without being   !<<\r
  29     >>!   obliged to provide the source code for proprietary components     !<<\r
  30     >>!   outside of the FreeRTOS kernel.                                   !<<\r
  31 \r
  32     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  33     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  34     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  35     link: http://www.freertos.org/a00114.html\r
  36 \r
  37     1 tab == 4 spaces!\r
  38 \r
  39     ***************************************************************************\r
  40      *                                                                       *\r
  41      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  42      *    not run, what could be wrong?"                                     *\r
  43      *                                                                       *\r
  44      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  45      *                                                                       *\r
  46     ***************************************************************************\r
  47 \r
  48     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  49     license and Real Time Engineers Ltd. contact details.\r
  50 \r
  51     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  52     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  53     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  54 \r
  55     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  56     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  57     licenses offer ticketed support, indemnification and middleware.\r
  58 \r
  59     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  60     engineered and independently SIL3 certified version for use in safety and\r
  61     mission critical applications that require provable dependability.\r
  62 \r
  63     1 tab == 4 spaces!\r
  64 */\r
  65 \r
  66 #ifndef PORTASM_H\r
  67 #define PORTASM_H\r
  68 \r
  69 portSAVE_CONTEXT macro\r
  70 \r
  71                 IMPORT pxCurrentTCB\r
  72                 IMPORT usCriticalNesting\r
  73 \r
  74                 /* Save the remaining registers. */\r
  75                 push    r4\r
  76                 push    r5\r
  77                 push    r6\r
  78                 push    r7\r
  79                 push    r8\r
  80                 push    r9\r
  81                 push    r10\r
  82                 push    r11\r
  83                 push    r12\r
  84                 push    r13\r
  85                 push    r14\r
  86                 push    r15\r
  87                 mov.w   &usCriticalNesting, r14\r
  88                 push    r14\r
  89                 mov.w   &pxCurrentTCB, r12\r
  90                 mov.w   r1, 0(r12)\r
  91                 endm\r
  92 /*-----------------------------------------------------------*/\r
  93                 \r
  94 portRESTORE_CONTEXT macro\r
  95                 mov.w   &pxCurrentTCB, r12\r
  96                 mov.w   @r12, r1\r
  97                 pop             r15\r
  98                 mov.w   r15, &usCriticalNesting\r
  99                 pop             r15\r
 100                 pop             r14\r
 101                 pop             r13\r
 102                 pop             r12\r
 103                 pop             r11\r
 104                 pop             r10\r
 105                 pop             r9\r
 106                 pop             r8\r
 107                 pop             r7\r
 108                 pop             r6\r
 109                 pop             r5\r
 110                 pop             r4\r
 111 \r
 112                 /* The last thing on the stack will be the status register.\r
 113         Ensure the power down bits are clear ready for the next\r
 114         time this power down register is popped from the stack. */\r
 115                 bic.w   #0xf0,0(SP)\r
 116 \r
 117                 reti\r
 118                 endm\r
 119 /*-----------------------------------------------------------*/\r
 120 \r
 121 #endif\r
 122 \r