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

   1 /*\r
   2     FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.\r
   3 \r
   4     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
   5 \r
   6     ***************************************************************************\r
   7      *                                                                       *\r
   8      *    FreeRTOS provides completely free yet professionally developed,    *\r
   9      *    robust, strictly quality controlled, supported, and cross          *\r
  10      *    platform software that has become a de facto standard.             *\r
  11      *                                                                       *\r
  12      *    Help yourself get started quickly and support the FreeRTOS         *\r
  13      *    project by purchasing a FreeRTOS tutorial book, reference          *\r
  14      *    manual, or both from: http://www.FreeRTOS.org/Documentation        *\r
  15      *                                                                       *\r
  16      *    Thank you!                                                         *\r
  17      *                                                                       *\r
  18     ***************************************************************************\r
  19 \r
  20     This file is part of the FreeRTOS distribution.\r
  21 \r
  22     FreeRTOS is free software; you can redistribute it and/or modify it under\r
  23     the terms of the GNU General Public License (version 2) as published by the\r
  24     Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.\r
  25 \r
  26     >>! NOTE: The modification to the GPL is included to allow you to distribute\r
  27     >>! a combined work that includes FreeRTOS without being obliged to provide\r
  28     >>! the source code for proprietary components outside of the FreeRTOS\r
  29     >>! kernel.\r
  30 \r
  31     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
  32     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
  33     FOR A PARTICULAR PURPOSE.  Full license text is available from the following\r
  34     link: http://www.freertos.org/a00114.html\r
  35 \r
  36     1 tab == 4 spaces!\r
  37 \r
  38     ***************************************************************************\r
  39      *                                                                       *\r
  40      *    Having a problem?  Start by reading the FAQ "My application does   *\r
  41      *    not run, what could be wrong?"                                     *\r
  42      *                                                                       *\r
  43      *    http://www.FreeRTOS.org/FAQHelp.html                               *\r
  44      *                                                                       *\r
  45     ***************************************************************************\r
  46 \r
  47     http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
  48     license and Real Time Engineers Ltd. contact details.\r
  49 \r
  50     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
  51     including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
  52     compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
  53 \r
  54     http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
  55     Integrity Systems to sell under the OpenRTOS brand.  Low cost OpenRTOS\r
  56     licenses offer ticketed support, indemnification and middleware.\r
  57 \r
  58     http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
  59     engineered and independently SIL3 certified version for use in safety and\r
  60     mission critical applications that require provable dependability.\r
  61 \r
  62     1 tab == 4 spaces!\r
  63 */\r
  64 \r
  65 #ifndef PORTASM_H\r
  66 #define PORTASM_H\r
  67 \r
  68 portSAVE_CONTEXT macro\r
  69 \r
  70                 IMPORT pxCurrentTCB\r
  71                 IMPORT usCriticalNesting\r
  72 \r
  73                 /* Save the remaining registers. */\r
  74                 push    r4\r
  75                 push    r5\r
  76                 push    r6\r
  77                 push    r7\r
  78                 push    r8\r
  79                 push    r9\r
  80                 push    r10\r
  81                 push    r11\r
  82                 push    r12\r
  83                 push    r13\r
  84                 push    r14\r
  85                 push    r15\r
  86                 mov.w   &usCriticalNesting, r14\r
  87                 push    r14\r
  88                 mov.w   &pxCurrentTCB, r12\r
  89                 mov.w   r1, 0(r12)\r
  90                 endm\r
  91 /*-----------------------------------------------------------*/\r
  92                 \r
  93 portRESTORE_CONTEXT macro\r
  94                 mov.w   &pxCurrentTCB, r12\r
  95                 mov.w   @r12, r1\r
  96                 pop             r15\r
  97                 mov.w   r15, &usCriticalNesting\r
  98                 pop             r15\r
  99                 pop             r14\r
 100                 pop             r13\r
 101                 pop             r12\r
 102                 pop             r11\r
 103                 pop             r10\r
 104                 pop             r9\r
 105                 pop             r8\r
 106                 pop             r7\r
 107                 pop             r6\r
 108                 pop             r5\r
 109                 pop             r4\r
 110 \r
 111                 /* The last thing on the stack will be the status register.\r
 112         Ensure the power down bits are clear ready for the next\r
 113         time this power down register is popped from the stack. */\r
 114                 bic.w   #0xf0,0(SP)\r
 115 \r
 116                 reti\r
 117                 endm\r
 118 /*-----------------------------------------------------------*/\r
 119 \r
 120 #endif\r
 121 \r