/*\r
- FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.\r
-\r
- VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
-\r
- ***************************************************************************\r
- * *\r
- * FreeRTOS provides completely free yet professionally developed, *\r
- * robust, strictly quality controlled, supported, and cross *\r
- * platform software that has become a de facto standard. *\r
- * *\r
- * Help yourself get started quickly and support the FreeRTOS *\r
- * project by purchasing a FreeRTOS tutorial book, reference *\r
- * manual, or both from: http://www.FreeRTOS.org/Documentation *\r
- * *\r
- * Thank you! *\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
-\r
- >>! NOTE: The modification to the GPL is included to allow you to distribute\r
- >>! a combined work that includes FreeRTOS without being obliged to provide\r
- >>! the source code for proprietary components outside of the FreeRTOS\r
- >>! kernel.\r
-\r
- FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY\r
- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\r
- FOR A PARTICULAR PURPOSE. Full license text is available from the following\r
- link: http://www.freertos.org/a00114.html\r
-\r
- 1 tab == 4 spaces!\r
-\r
- ***************************************************************************\r
- * *\r
- * Having a problem? Start by reading the FAQ "My application does *\r
- * not run, what could be wrong?" *\r
- * *\r
- * http://www.FreeRTOS.org/FAQHelp.html *\r
- * *\r
- ***************************************************************************\r
-\r
- http://www.FreeRTOS.org - Documentation, books, training, latest versions,\r
- license and Real Time Engineers Ltd. contact details.\r
-\r
- http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,\r
- including FreeRTOS+Trace - an indispensable productivity tool, a DOS\r
- compatible FAT file system, and our tiny thread aware UDP/IP stack.\r
-\r
- http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High\r
- Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS\r
- licenses offer ticketed support, indemnification and middleware.\r
-\r
- http://www.SafeRTOS.com - High Integrity Systems also provide a safety\r
- engineered and independently SIL3 certified version for use in safety and\r
- mission critical applications that require provable dependability.\r
-\r
- 1 tab == 4 spaces!\r
-*/\r
+ * FreeRTOS Kernel V10.3.0\r
+ * Copyright (C) 2020 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.\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
#include <FreeRTOSConfig.h>\r
\r
EXTERN vTaskSwitchContext\r
\r
PUBLIC xPortPendSVHandler\r
- PUBLIC ulPortSetInterruptMask\r
- PUBLIC vPortClearInterruptMask\r
PUBLIC vPortSVCHandler\r
PUBLIC vPortStartFirstTask\r
PUBLIC vPortEnableVFP\r
/*-----------------------------------------------------------*/\r
\r
xPortPendSVHandler:\r
- mrs r0, psp \r
- \r
+ mrs r0, psp\r
+ isb\r
/* Get the location of the current TCB. */\r
- ldr r3, =pxCurrentTCB \r
- ldr r2, [r3] \r
+ ldr r3, =pxCurrentTCB\r
+ ldr r2, [r3]\r
\r
/* Is the task using the FPU context? If so, push high vfp registers. */\r
tst r14, #0x10\r
vstmdbeq r0!, {s16-s31}\r
\r
/* Save the core registers. */\r
- stmdb r0!, {r4-r11, r14} \r
- \r
+ stmdb r0!, {r4-r11, r14}\r
+\r
/* Save the new top of stack into the first member of the TCB. */\r
str r0, [r2]\r
- \r
- stmdb sp!, {r3, r14}\r
+\r
+ stmdb sp!, {r0, r3}\r
mov r0, #configMAX_SYSCALL_INTERRUPT_PRIORITY\r
msr basepri, r0\r
- bl vTaskSwitchContext \r
+ dsb\r
+ isb\r
+ bl vTaskSwitchContext\r
mov r0, #0\r
msr basepri, r0\r
- ldmia sp!, {r3, r14}\r
+ ldmia sp!, {r0, r3}\r
\r
/* The first item in pxCurrentTCB is the task top of stack. */\r
- ldr r1, [r3] \r
+ ldr r1, [r3]\r
ldr r0, [r1]\r
- \r
+\r
/* Pop the core registers. */\r
ldmia r0!, {r4-r11, r14}\r
\r
- /* Is the task using the FPU context? If so, pop the high vfp registers \r
+ /* Is the task using the FPU context? If so, pop the high vfp registers\r
too. */\r
tst r14, #0x10\r
it eq\r
vldmiaeq r0!, {s16-s31}\r
- \r
- msr psp, r0 \r
- bx r14 \r
-\r
\r
-/*-----------------------------------------------------------*/\r
+ msr psp, r0\r
+ isb\r
+ #ifdef WORKAROUND_PMU_CM001 /* XMC4000 specific errata */\r
+ #if WORKAROUND_PMU_CM001 == 1\r
+ push { r14 }\r
+ pop { pc }\r
+ #endif\r
+ #endif\r
\r
-ulPortSetInterruptMask:\r
- mrs r0, basepri\r
- mov r1, #configMAX_SYSCALL_INTERRUPT_PRIORITY\r
- msr basepri, r1\r
bx r14\r
- \r
-/*-----------------------------------------------------------*/\r
\r
-vPortClearInterruptMask:\r
- msr basepri, r0\r
- bx r14\r
\r
/*-----------------------------------------------------------*/\r
\r
/* Pop the core registers. */\r
ldmia r0!, {r4-r11, r14}\r
msr psp, r0\r
+ isb\r
mov r0, #0\r
- msr basepri, r0 \r
+ msr basepri, r0\r
bx r14\r
\r
/*-----------------------------------------------------------*/\r
ldr r0, [r0]\r
/* Set the msp back to the start of the stack. */\r
msr msp, r0\r
+ /* Clear the bit that indicates the FPU is in use in case the FPU was used\r
+ before the scheduler was started - which would otherwise result in the\r
+ unnecessary leaving of space in the SVC stack for lazy saving of FPU\r
+ registers. */\r
+ mov r0, #0\r
+ msr control, r0\r
/* Call SVC to start the first task. */\r
cpsie i\r
+ cpsie f\r
+ dsb\r
+ isb\r
svc 0\r
\r
/*-----------------------------------------------------------*/\r
/* The FPU enable bits are in the CPACR. */\r
ldr.w r0, =0xE000ED88\r
ldr r1, [r0]\r
- \r
+\r
/* Enable CP10 and CP11 coprocessors, then save back. */\r
orr r1, r1, #( 0xf << 20 )\r
str r1, [r0]\r
- bx r14 \r
- \r
+ bx r14\r
+\r
\r
\r
END\r
- \r
+\r
projects / freertos / blobdiff