+++ /dev/null
-/*\r
- FreeRTOS V8.2.3 - Copyright (C) 2015 Real Time Engineers Ltd.\r
- All rights reserved\r
-\r
- VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.\r
-\r
- This file is part of the FreeRTOS distribution and was contributed\r
- to the project by Technolution B.V. (www.technolution.nl,\r
- freertos-riscv@technolution.eu) under the terms of the FreeRTOS\r
- contributors license.\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
- ***************************************************************************\r
- >>! NOTE: The modification to the GPL is included to allow you to !<<\r
- >>! distribute a combined work that includes FreeRTOS without being !<<\r
- >>! obliged to provide the source code for proprietary components !<<\r
- >>! outside of the FreeRTOS kernel. !<<\r
- ***************************************************************************\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 on the following\r
- link: http://www.freertos.org/a00114.html\r
-\r
- ***************************************************************************\r
- * *\r
- * FreeRTOS provides completely free yet professionally developed, *\r
- * robust, strictly quality controlled, supported, and cross *\r
- * platform software that is more than just the market leader, it *\r
- * is the industry''s de facto standard. *\r
- * *\r
- * Help yourself get started quickly while simultaneously helping *\r
- * to support the FreeRTOS project by purchasing a FreeRTOS *\r
- * tutorial book, reference manual, or both: *\r
- * http://www.FreeRTOS.org/Documentation *\r
- * *\r
- ***************************************************************************\r
-\r
- http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading\r
- the FAQ page "My application does not run, what could be wrong?". Have you\r
- defined configASSERT()?\r
-\r
- http://www.FreeRTOS.org/support - In return for receiving this top quality\r
- embedded software for free we request you assist our global community by\r
- participating in the support forum.\r
-\r
- http://www.FreeRTOS.org/training - Investing in training allows your team to\r
- be as productive as possible as early as possible. Now you can receive\r
- FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers\r
- Ltd, and the world's leading authority on the world's leading RTOS.\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.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.\r
- Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.\r
-\r
- http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High\r
- Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS\r
- licenses offer ticketed support, indemnification and commercial 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
-\r
-\r
-#ifdef __riscv64\r
-# define STORE sd\r
-# define LOAD ld\r
-# define REGBYTES 8\r
-#else\r
-# define STORE sw\r
-# define LOAD lw\r
-# define REGBYTES 4\r
-#endif\r
-\r
-#define MSTATUS_PRV1 0x1800\r
-\r
-.global portSAVE_CONTEXT\r
-.global portRESTORE_CONTEXT\r
-\r
-//.global xPortStartScheduler\r
-.global vPortYield\r
-.global vTaskIncrementTick\r
-.global vPortEndScheduler\r
-.global xExitStack\r
-\r
-\r
-/* Macro for saving task context */\r
-.macro portSAVE_CONTEXT\r
- .global pxCurrentTCB\r
- /* make room in stack */\r
- addi sp, sp, -REGBYTES * 32\r
-\r
- /* Save Context */\r
- STORE x1, 0x0(sp)\r
- STORE x2, 1 * REGBYTES(sp)\r
- STORE x3, 2 * REGBYTES(sp)\r
- STORE x4, 3 * REGBYTES(sp)\r
- STORE x5, 4 * REGBYTES(sp)\r
- STORE x6, 5 * REGBYTES(sp)\r
- STORE x7, 6 * REGBYTES(sp)\r
- STORE x8, 7 * REGBYTES(sp)\r
- STORE x9, 8 * REGBYTES(sp)\r
- STORE x10, 9 * REGBYTES(sp)\r
- STORE x11, 10 * REGBYTES(sp)\r
- STORE x12, 11 * REGBYTES(sp)\r
- STORE x13, 12 * REGBYTES(sp)\r
- STORE x14, 13 * REGBYTES(sp)\r
- STORE x15, 14 * REGBYTES(sp)\r
- STORE x16, 15 * REGBYTES(sp)\r
- STORE x17, 16 * REGBYTES(sp)\r
- STORE x18, 17 * REGBYTES(sp)\r
- STORE x19, 18 * REGBYTES(sp)\r
- STORE x20, 19 * REGBYTES(sp)\r
- STORE x21, 20 * REGBYTES(sp)\r
- STORE x22, 21 * REGBYTES(sp)\r
- STORE x23, 22 * REGBYTES(sp)\r
- STORE x24, 23 * REGBYTES(sp)\r
- STORE x25, 24 * REGBYTES(sp)\r
- STORE x26, 25 * REGBYTES(sp)\r
- STORE x27, 26 * REGBYTES(sp)\r
- STORE x28, 27 * REGBYTES(sp)\r
- STORE x29, 28 * REGBYTES(sp)\r
- STORE x30, 29 * REGBYTES(sp)\r
- STORE x31, 30 * REGBYTES(sp)\r
-\r
- /* Store current stackpointer in task control block (TCB) */\r
- LOAD t0, pxCurrentTCB //pointer\r
- STORE sp, 0x0(t0)\r
- .endm\r
-\r
-/* Saves current error program counter (EPC) as task program counter */\r
-.macro portSAVE_EPC\r
- csrr t0, mepc\r
- STORE t0, 31 * REGBYTES(sp)\r
- .endm\r
-\r
-/* Saves current return adress (RA) as task program counter */\r
-.macro portSAVE_RA\r
- STORE ra, 31 * REGBYTES(sp)\r
- .endm\r
-\r
-/* Macro for restoring task context */\r
-.macro portRESTORE_CONTEXT\r
-\r
- .global pxCurrentTCB\r
- /* Load stack pointer from the current TCB */\r
- LOAD sp, pxCurrentTCB\r
- LOAD sp, 0x0(sp)\r
-\r
- /* Load task program counter */\r
- LOAD t0, 31 * REGBYTES(sp)\r
- csrw mepc, t0\r
-\r
- /* Restore registers,\r
- Skip global pointer because that does not change */\r
- LOAD x1, 0x0(sp)\r
- LOAD x4, 3 * REGBYTES(sp)\r
- LOAD x5, 4 * REGBYTES(sp)\r
- LOAD x6, 5 * REGBYTES(sp)\r
- LOAD x7, 6 * REGBYTES(sp)\r
- LOAD x8, 7 * REGBYTES(sp)\r
- LOAD x9, 8 * REGBYTES(sp)\r
- LOAD x10, 9 * REGBYTES(sp)\r
- LOAD x11, 10 * REGBYTES(sp)\r
- LOAD x12, 11 * REGBYTES(sp)\r
- LOAD x13, 12 * REGBYTES(sp)\r
- LOAD x14, 13 * REGBYTES(sp)\r
- LOAD x15, 14 * REGBYTES(sp)\r
- LOAD x16, 15 * REGBYTES(sp)\r
- LOAD x17, 16 * REGBYTES(sp)\r
- LOAD x18, 17 * REGBYTES(sp)\r
- LOAD x19, 18 * REGBYTES(sp)\r
- LOAD x20, 19 * REGBYTES(sp)\r
- LOAD x21, 20 * REGBYTES(sp)\r
- LOAD x22, 21 * REGBYTES(sp)\r
- LOAD x23, 22 * REGBYTES(sp)\r
- LOAD x24, 23 * REGBYTES(sp)\r
- LOAD x25, 24 * REGBYTES(sp)\r
- LOAD x26, 25 * REGBYTES(sp)\r
- LOAD x27, 26 * REGBYTES(sp)\r
- LOAD x28, 27 * REGBYTES(sp)\r
- LOAD x29, 28 * REGBYTES(sp)\r
- LOAD x30, 29 * REGBYTES(sp)\r
- LOAD x31, 30 * REGBYTES(sp)\r
-\r
- addi sp, sp, REGBYTES * 32\r
-\r
- /* Enable global interupt */\r
- csrs mstatus,8\r
-\r
- ret\r
- .endm\r
-\r
-\r
-/*\r
-xPortStartScheduler:\r
-#ifdef __gracefulExit\r
-\r
- la t0, xStartContext\r
- STORE x1, 0x0(t0)\r
- STORE x2, 1 * REGBYTES(t0)\r
- STORE x3, 2 * REGBYTES(t0)\r
- STORE x4, 3 * REGBYTES(t0)\r
- STORE x5, 4 * REGBYTES(t0)\r
- STORE x6, 5 * REGBYTES(t0)\r
- STORE x7, 6 * REGBYTES(t0)\r
- STORE x8, 7 * REGBYTES(t0)\r
- STORE x9, 8 * REGBYTES(t0)\r
- STORE x10, 9 * REGBYTES(t0)\r
- STORE x11, 10 * REGBYTES(t0)\r
- STORE x12, 11 * REGBYTES(t0)\r
- STORE x13, 12 * REGBYTES(t0)\r
- STORE x14, 13 * REGBYTES(t0)\r
- STORE x15, 14 * REGBYTES(t0)\r
- STORE x16, 15 * REGBYTES(t0)\r
- STORE x17, 16 * REGBYTES(t0)\r
- STORE x18, 17 * REGBYTES(t0)\r
- STORE x19, 18 * REGBYTES(t0)\r
- STORE x20, 19 * REGBYTES(t0)\r
- STORE x21, 20 * REGBYTES(t0)\r
- STORE x22, 21 * REGBYTES(t0)\r
- STORE x23, 22 * REGBYTES(t0)\r
- STORE x24, 23 * REGBYTES(t0)\r
- STORE x25, 24 * REGBYTES(t0)\r
- STORE x26, 25 * REGBYTES(t0)\r
- STORE x27, 26 * REGBYTES(t0)\r
- STORE x28, 27 * REGBYTES(t0)\r
- STORE x29, 28 * REGBYTES(t0)\r
- STORE x30, 29 * REGBYTES(t0)\r
- STORE x31, 30 * REGBYTES(t0)\r
-#endif\r
- jal vPortSetupTimer\r
- portRESTORE_CONTEXT\r
-*/\r
-\r
-vPortEndScheduler:\r
-#ifdef __gracefulExit\r
- /* Load current context from xStartContext */\r
- la t0, xStartContext\r
- LOAD x1, 0x0(t0)\r
- LOAD x2, 1 * REGBYTES(t0)\r
- LOAD x3, 2 * REGBYTES(t0)\r
- LOAD x4, 3 * REGBYTES(t0)\r
- LOAD x5, 4 * REGBYTES(t0)\r
- LOAD x6, 5 * REGBYTES(t0)\r
- LOAD x7, 6 * REGBYTES(t0)\r
- LOAD x8, 7 * REGBYTES(t0)\r
- LOAD x9, 8 * REGBYTES(t0)\r
- LOAD x10, 9 * REGBYTES(t0)\r
- LOAD x11, 10 * REGBYTES(t0)\r
- LOAD x12, 11 * REGBYTES(t0)\r
- LOAD x13, 12 * REGBYTES(t0)\r
- LOAD x14, 13 * REGBYTES(t0)\r
- LOAD x15, 14 * REGBYTES(t0)\r
- LOAD x16, 15 * REGBYTES(t0)\r
- LOAD x17, 16 * REGBYTES(t0)\r
- LOAD x18, 17 * REGBYTES(t0)\r
- LOAD x19, 18 * REGBYTES(t0)\r
- LOAD x20, 19 * REGBYTES(t0)\r
- LOAD x21, 20 * REGBYTES(t0)\r
- LOAD x22, 21 * REGBYTES(t0)\r
- LOAD x23, 22 * REGBYTES(t0)\r
- LOAD x24, 23 * REGBYTES(t0)\r
- LOAD x25, 24 * REGBYTES(t0)\r
- LOAD x26, 25 * REGBYTES(t0)\r
- LOAD x27, 26 * REGBYTES(t0)\r
- LOAD x28, 27 * REGBYTES(t0)\r
- LOAD x29, 28 * REGBYTES(t0)\r
- LOAD x30, 39 * REGBYTES(t0)\r
- LOAD x31, 30 * REGBYTES(t0)\r
-#endif\r
- ret\r
-\r
projects / freertos / blobdiff