;/*\r
-; FreeRTOS V9.0.1 - Copyright (C) 2017 Real Time Engineers Ltd.\r
-; All rights reserved\r
-;\r
-;\r
-; ***************************************************************************\r
-; * *\r
-; * FreeRTOS tutorial books are available in pdf and paperback. *\r
-; * Complete, revised, and edited pdf reference manuals are also *\r
-; * available. *\r
-; * *\r
-; * Purchasing FreeRTOS documentation will not only help you, by *\r
-; * ensuring you get running as quickly as possible and with an *\r
-; * in-depth knowledge of how to use FreeRTOS, it will also help *\r
-; * the FreeRTOS project to continue with its mission of providing *\r
-; * professional grade, cross platform, de facto standard solutions *\r
-; * for microcontrollers - completely free of charge! *\r
-; * *\r
-; * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *\r
-; * *\r
-; * Thank you for using FreeRTOS, and thank you for your support! *\r
-; * *\r
-; ***************************************************************************\r
-;\r
-;\r
-; This file is part of the FreeRTOS distribution.\r
-;\r
-; FreeRTOS is free software; you can redistribute it and/or modify it under\r
-; the terms of the GNU General Public License (version 2) as published by the\r
-; Free Software Foundation AND MODIFIED BY the FreeRTOS exception.\r
-; >>>NOTE<<< The modification to the GPL is included to allow you to\r
-; distribute a combined work that includes FreeRTOS without being obliged to\r
-; provide the source code for proprietary components outside of the FreeRTOS\r
-; kernel. FreeRTOS is distributed in the hope that it will be useful, but\r
-; WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY\r
-; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for\r
-; more details. You should have received a copy of the GNU General Public\r
-; License and the FreeRTOS license exception along with FreeRTOS; if not it\r
-; can be viewed here: http://www.freertos.org/a00114.html and also obtained\r
-; by writing to Richard Barry, contact details for whom are available on the\r
-; FreeRTOS WEB site.\r
-;\r
-; 1 tab == 4 spaces!\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
+; * FreeRTOS Kernel V10.0.0\r
+; * Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.\r
+; *\r
+; * Permission is hereby granted, free of charge, to any person obtaining a copy of\r
+; * this software and associated documentation files (the "Software"), to deal in\r
+; * the Software without restriction, including without limitation the rights to\r
+; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of\r
+; * the Software, and to permit persons to whom the Software is furnished to do so,\r
+; * subject to the following conditions:\r
+; *\r
+; * The above copyright notice and this permission notice shall be included in all\r
+; * copies or substantial portions of the Software. If you wish to use our Amazon\r
+; * FreeRTOS name, please do so in a fair use way that does not cause confusion.\r
+; *\r
+; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
+; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS\r
+; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR\r
+; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
+; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
+; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
+; *\r
+; * http://www.FreeRTOS.org\r
+; * http://aws.amazon.com/freertos\r
+; *\r
+; * 1 tab == 4 spaces!\r
+; */\r
+\r
EXTERN pxCurrentTCB\r
EXTERN ulCriticalNesting\r
\r
\r
portSAVE_CONTEXT MACRO\r
\r
- ; Push R0 as we are going to use the register. \r
+ ; Push R0 as we are going to use the register.\r
STMDB SP!, {R0}\r
\r
- ; Set R0 to point to the task stack pointer. \r
+ ; Set R0 to point to the task stack pointer.\r
STMDB SP, {SP}^\r
NOP\r
SUB SP, SP, #4\r
LDMIA SP!, {R0}\r
\r
- ; Push the return address onto the stack. \r
+ ; Push the return address onto the stack.\r
STMDB R0!, {LR}\r
\r
- ; Now we have saved LR we can use it instead of R0. \r
+ ; Now we have saved LR we can use it instead of R0.\r
MOV LR, R0\r
\r
- ; Pop R0 so we can save it onto the system mode stack. \r
+ ; Pop R0 so we can save it onto the system mode stack.\r
LDMIA SP!, {R0}\r
\r
- ; Push all the system mode registers onto the task stack. \r
+ ; Push all the system mode registers onto the task stack.\r
STMDB LR, {R0-LR}^\r
NOP\r
SUB LR, LR, #60\r
\r
- ; Push the SPSR onto the task stack. \r
+ ; Push the SPSR onto the task stack.\r
MRS R0, SPSR\r
STMDB LR!, {R0}\r
\r
- LDR R0, =ulCriticalNesting \r
+ LDR R0, =ulCriticalNesting\r
LDR R0, [R0]\r
STMDB LR!, {R0}\r
\r
- ; Store the new top of stack for the task. \r
+ ; Store the new top of stack for the task.\r
LDR R1, =pxCurrentTCB\r
LDR R0, [R1]\r
STR LR, [R0]\r
\r
portRESTORE_CONTEXT MACRO\r
\r
- ; Set the LR to the task stack. \r
+ ; Set the LR to the task stack.\r
LDR R1, =pxCurrentTCB\r
LDR R0, [R1]\r
LDR LR, [R0]\r
\r
- ; The critical nesting depth is the first item on the stack. \r
- ; Load it into the ulCriticalNesting variable. \r
+ ; The critical nesting depth is the first item on the stack.\r
+ ; Load it into the ulCriticalNesting variable.\r
LDR R0, =ulCriticalNesting\r
LDMFD LR!, {R1}\r
STR R1, [R0]\r
\r
- ; Get the SPSR from the stack. \r
+ ; Get the SPSR from the stack.\r
LDMFD LR!, {R0}\r
MSR SPSR_cxsf, R0\r
\r
- ; Restore all system mode registers for the task. \r
+ ; Restore all system mode registers for the task.\r
LDMFD LR, {R0-R14}^\r
NOP\r
\r
- ; Restore the return address. \r
+ ; Restore the return address.\r
LDR LR, [LR, #+60]\r
\r
- ; And return - correcting the offset in the LR to obtain the \r
- ; correct address. \r
+ ; And return - correcting the offset in the LR to obtain the\r
+ ; correct address.\r
SUBS PC, LR, #4\r
\r
ENDM\r
projects / freertos / blobdiff