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Diffstat (limited to 'rtos/FreeRTOS/Source/portable/IAR/ARM_CM4F/portasm.s')
| -rw-r--r-- | rtos/FreeRTOS/Source/portable/IAR/ARM_CM4F/portasm.s | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/rtos/FreeRTOS/Source/portable/IAR/ARM_CM4F/portasm.s b/rtos/FreeRTOS/Source/portable/IAR/ARM_CM4F/portasm.s deleted file mode 100644 index e80e5fa..0000000 --- a/rtos/FreeRTOS/Source/portable/IAR/ARM_CM4F/portasm.s +++ /dev/null @@ -1,194 +0,0 @@ -/* - FreeRTOS V8.0.0 - Copyright (C) 2014 Real Time Engineers Ltd. - All rights reserved - - VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. - - *************************************************************************** - * * - * FreeRTOS provides completely free yet professionally developed, * - * robust, strictly quality controlled, supported, and cross * - * platform software that has become a de facto standard. * - * * - * Help yourself get started quickly and support the FreeRTOS * - * project by purchasing a FreeRTOS tutorial book, reference * - * manual, or both from: http://www.FreeRTOS.org/Documentation * - * * - * Thank you! * - * * - *************************************************************************** - - This file is part of the FreeRTOS distribution. - - FreeRTOS is free software; you can redistribute it and/or modify it under - the terms of the GNU General Public License (version 2) as published by the - Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception. - - >>! NOTE: The modification to the GPL is included to allow you to distribute - >>! a combined work that includes FreeRTOS without being obliged to provide - >>! the source code for proprietary components outside of the FreeRTOS - >>! kernel. - - FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY - WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS - FOR A PARTICULAR PURPOSE. Full license text is available from the following - link: http://www.freertos.org/a00114.html - - 1 tab == 4 spaces! - - *************************************************************************** - * * - * Having a problem? Start by reading the FAQ "My application does * - * not run, what could be wrong?" * - * * - * http://www.FreeRTOS.org/FAQHelp.html * - * * - *************************************************************************** - - http://www.FreeRTOS.org - Documentation, books, training, latest versions, - license and Real Time Engineers Ltd. contact details. - - http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, - including FreeRTOS+Trace - an indispensable productivity tool, a DOS - compatible FAT file system, and our tiny thread aware UDP/IP stack. - - http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High - Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS - licenses offer ticketed support, indemnification and middleware. - - http://www.SafeRTOS.com - High Integrity Systems also provide a safety - engineered and independently SIL3 certified version for use in safety and - mission critical applications that require provable dependability. - - 1 tab == 4 spaces! -*/ - -#include <FreeRTOSConfig.h> - - RSEG CODE:CODE(2) - thumb - - EXTERN pxCurrentTCB - EXTERN vTaskSwitchContext - - PUBLIC xPortPendSVHandler - PUBLIC ulPortSetInterruptMask - PUBLIC vPortClearInterruptMask - PUBLIC vPortSVCHandler - PUBLIC vPortStartFirstTask - PUBLIC vPortEnableVFP - - -/*-----------------------------------------------------------*/ - -xPortPendSVHandler: - mrs r0, psp - isb - /* Get the location of the current TCB. */ - ldr r3, =pxCurrentTCB - ldr r2, [r3] - - /* Is the task using the FPU context? If so, push high vfp registers. */ - tst r14, #0x10 - it eq - vstmdbeq r0!, {s16-s31} - - /* Save the core registers. */ - stmdb r0!, {r4-r11, r14} - - /* Save the new top of stack into the first member of the TCB. */ - str r0, [r2] - - stmdb sp!, {r3} - mov r0, #configMAX_SYSCALL_INTERRUPT_PRIORITY - msr basepri, r0 - bl vTaskSwitchContext - mov r0, #0 - msr basepri, r0 - ldmia sp!, {r3} - - /* The first item in pxCurrentTCB is the task top of stack. */ - ldr r1, [r3] - ldr r0, [r1] - - /* Pop the core registers. */ - ldmia r0!, {r4-r11, r14} - - /* Is the task using the FPU context? If so, pop the high vfp registers - too. */ - tst r14, #0x10 - it eq - vldmiaeq r0!, {s16-s31} - - msr psp, r0 - isb - #ifdef WORKAROUND_PMU_CM001 /* XMC4000 specific errata */ - #if WORKAROUND_PMU_CM001 == 1 - push { r14 } - pop { pc } - #endif - #endif - - bx r14 - - -/*-----------------------------------------------------------*/ - -ulPortSetInterruptMask: - mrs r0, basepri - mov r1, #configMAX_SYSCALL_INTERRUPT_PRIORITY - msr basepri, r1 - bx r14 - -/*-----------------------------------------------------------*/ - -vPortClearInterruptMask: - msr basepri, r0 - bx r14 - -/*-----------------------------------------------------------*/ - -vPortSVCHandler: - /* Get the location of the current TCB. */ - ldr r3, =pxCurrentTCB - ldr r1, [r3] - ldr r0, [r1] - /* Pop the core registers. */ - ldmia r0!, {r4-r11, r14} - msr psp, r0 - isb - mov r0, #0 - msr basepri, r0 - bx r14 - -/*-----------------------------------------------------------*/ - -vPortStartFirstTask - /* Use the NVIC offset register to locate the stack. */ - ldr r0, =0xE000ED08 - ldr r0, [r0] - ldr r0, [r0] - /* Set the msp back to the start of the stack. */ - msr msp, r0 - /* Call SVC to start the first task. */ - cpsie i - dsb - isb - svc 0 - -/*-----------------------------------------------------------*/ - -vPortEnableVFP: - /* The FPU enable bits are in the CPACR. */ - ldr.w r0, =0xE000ED88 - ldr r1, [r0] - - /* Enable CP10 and CP11 coprocessors, then save back. */ - orr r1, r1, #( 0xf << 20 ) - str r1, [r0] - bx r14 - - - - END - |