--- /dev/null
+/*\r
+ FreeRTOS.org V5.0.2 - Copyright (C) 2003-2008 Richard Barry.\r
+\r
+ This file is part of the FreeRTOS.org distribution.\r
+\r
+ FreeRTOS.org is free software; you can redistribute it and/or modify\r
+ it under the terms of the GNU General Public License as published by\r
+ the Free Software Foundation; either version 2 of the License, or\r
+ (at your option) any later version.\r
+\r
+ FreeRTOS.org is distributed in the hope that it will be useful,\r
+ but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ GNU General Public License for more details.\r
+\r
+ You should have received a copy of the GNU General Public License\r
+ along with FreeRTOS.org; if not, write to the Free Software\r
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
+\r
+ A special exception to the GPL can be applied should you wish to distribute\r
+ a combined work that includes FreeRTOS.org, without being obliged to provide\r
+ the source code for any proprietary components. See the licensing section \r
+ of http://www.FreeRTOS.org for full details of how and when the exception\r
+ can be applied.\r
+\r
+ ***************************************************************************\r
+ ***************************************************************************\r
+ * *\r
+ * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *\r
+ * and even write all or part of your application on your behalf. *\r
+ * See http://www.OpenRTOS.com for details of the services we provide to *\r
+ * expedite your project. *\r
+ * *\r
+ ***************************************************************************\r
+ ***************************************************************************\r
+\r
+ Please ensure to read the configuration and relevant port sections of the\r
+ online documentation.\r
+\r
+ http://www.FreeRTOS.org - Documentation, latest information, license and \r
+ contact details.\r
+\r
+ http://www.SafeRTOS.com - A version that is certified for use in safety \r
+ critical systems.\r
+\r
+ http://www.OpenRTOS.com - Commercial support, development, porting, \r
+ licensing and training services.\r
+*/\r
+\r
+ .global _vPortYield\r
+ .extern _vTaskSwitchContext\r
+ .extern uxCriticalNesting\r
+\r
+_vPortYield:\r
+\r
+ PUSH SR /* Save the SR used by the task.... */\r
+ PUSH W0 /* ....then disable interrupts. */\r
+ MOV #32, W0\r
+ MOV W0, SR\r
+ PUSH W1 /* Save registers to the stack. */\r
+ PUSH.D W2\r
+ PUSH.D W4\r
+ PUSH.D W6\r
+ PUSH.D W8\r
+ PUSH.D W10\r
+ PUSH.D W12\r
+ PUSH W14\r
+ PUSH RCOUNT\r
+ PUSH TBLPAG\r
+ \r
+ #ifdef MPLAB_DSPIC_PORT\r
+ PUSH ACCAL\r
+ PUSH ACCAH\r
+ PUSH ACCAU\r
+ PUSH ACCBL\r
+ PUSH ACCBH\r
+ PUSH ACCBU\r
+ PUSH DCOUNT\r
+ PUSH DOSTARTL\r
+ PUSH DOSTARTH\r
+ PUSH DOENDL\r
+ PUSH DOENDH\r
+ #endif\r
+ \r
+ \r
+ PUSH CORCON\r
+ PUSH PSVPAG\r
+ MOV _uxCriticalNesting, W0 /* Save the critical nesting counter for the task. */\r
+ PUSH W0\r
+ MOV _pxCurrentTCB, W0 /* Save the new top of stack into the TCB. */\r
+ MOV W15, [W0]\r
+\r
+ call _vTaskSwitchContext\r
+\r
+ MOV _pxCurrentTCB, W0 /* Restore the stack pointer for the task. */\r
+ MOV [W0], W15\r
+ POP W0 /* Restore the critical nesting counter for the task. */\r
+ MOV W0, _uxCriticalNesting\r
+ POP PSVPAG\r
+ POP CORCON\r
+\r
+ #ifdef MPLAB_DSPIC_PORT\r
+ POP DOENDH\r
+ POP DOENDL\r
+ POP DOSTARTH\r
+ POP DOSTARTL\r
+ POP DCOUNT\r
+ POP ACCBU\r
+ POP ACCBH\r
+ POP ACCBL\r
+ POP ACCAU\r
+ POP ACCAH\r
+ POP ACCAL\r
+ #endif\r
+\r
+ POP TBLPAG\r
+ POP RCOUNT /* Restore the registers from the stack. */\r
+ POP W14\r
+ POP.D W12\r
+ POP.D W10\r
+ POP.D W8\r
+ POP.D W6\r
+ POP.D W4\r
+ POP.D W2\r
+ POP.D W0\r
+ POP SR\r
+\r
+ return\r
+\r
+ .end\r
projects / freertos / commitdiff