mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-08-11 13:54:16 -04:00
Normalize line endings and whitespace in source files
This commit is contained in:
Paul Bartell
Paul Bartell
parent
151fb04ad1
commit
01820d3ed9
574 changed files with 162626 additions and 172362 deletions
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@ -1,209 +1,208 @@
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/*
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* FreeRTOS Kernel <DEVELOPMENT BRANCH>
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* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
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* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
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||||
*
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||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
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||||
*
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||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the NIOS2 port.
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*----------------------------------------------------------*/
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/* Standard Includes. */
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#include <string.h>
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#include <errno.h>
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/* Altera includes. */
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#include "sys/alt_irq.h"
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#include "sys/alt_exceptions.h"
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#include "altera_avalon_timer_regs.h"
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#include "priv/alt_irq_table.h"
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Interrupts are enabled. */
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#define portINITIAL_ESTATUS ( StackType_t ) 0x01
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int _alt_ic_isr_register(alt_u32 ic_id, alt_u32 irq, alt_isr_func isr,
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void *isr_context, void *flags);
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/*-----------------------------------------------------------*/
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/*
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* Setup the timer to generate the tick interrupts.
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*/
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static void prvSetupTimerInterrupt( void );
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/*
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* Call back for the alarm function.
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*/
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void vPortSysTickHandler( void * context);
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/*-----------------------------------------------------------*/
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static void prvReadGp( uint32_t *ulValue )
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{
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asm( "stw gp, (%0)" :: "r"(ulValue) );
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}
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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*/
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StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
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{
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StackType_t *pxFramePointer = pxTopOfStack - 1;
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StackType_t xGlobalPointer;
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prvReadGp( &xGlobalPointer );
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/* End of stack marker. */
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*pxTopOfStack = 0xdeadbeef;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pxFramePointer;
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pxTopOfStack--;
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*pxTopOfStack = xGlobalPointer;
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/* Space for R23 to R16. */
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pxTopOfStack -= 9;
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*pxTopOfStack = ( StackType_t ) pxCode;
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pxTopOfStack--;
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*pxTopOfStack = portINITIAL_ESTATUS;
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/* Space for R15 to R5. */
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pxTopOfStack -= 12;
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*pxTopOfStack = ( StackType_t ) pvParameters;
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/* Space for R3 to R1, muldiv and RA. */
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pxTopOfStack -= 5;
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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*/
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BaseType_t xPortStartScheduler( void )
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{
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/* Start the timer that generates the tick ISR. Interrupts are disabled
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here already. */
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prvSetupTimerInterrupt();
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/* Start the first task. */
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asm volatile ( " movia r2, restore_sp_from_pxCurrentTCB \n"
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" jmp r2 " );
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/* Should not get here! */
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return 0;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void )
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{
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/* It is unlikely that the NIOS2 port will require this function as there
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is nothing to return to. */
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}
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/*-----------------------------------------------------------*/
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/*
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* Setup the systick timer to generate the tick interrupts at the required
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* frequency.
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*/
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void prvSetupTimerInterrupt( void )
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{
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/* Try to register the interrupt handler. */
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if ( -EINVAL == _alt_ic_isr_register( SYS_CLK_IRQ_INTERRUPT_CONTROLLER_ID, SYS_CLK_IRQ, vPortSysTickHandler, 0x0, 0x0 ) )
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{
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/* Failed to install the Interrupt Handler. */
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asm( "break" );
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}
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else
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{
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/* Configure SysTick to interrupt at the requested rate. */
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IOWR_ALTERA_AVALON_TIMER_CONTROL( SYS_CLK_BASE, ALTERA_AVALON_TIMER_CONTROL_STOP_MSK );
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IOWR_ALTERA_AVALON_TIMER_PERIODL( SYS_CLK_BASE, ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) & 0xFFFF );
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IOWR_ALTERA_AVALON_TIMER_PERIODH( SYS_CLK_BASE, ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) >> 16 );
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IOWR_ALTERA_AVALON_TIMER_CONTROL( SYS_CLK_BASE, ALTERA_AVALON_TIMER_CONTROL_CONT_MSK | ALTERA_AVALON_TIMER_CONTROL_START_MSK | ALTERA_AVALON_TIMER_CONTROL_ITO_MSK );
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}
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/* Clear any already pending interrupts generated by the Timer. */
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IOWR_ALTERA_AVALON_TIMER_STATUS( SYS_CLK_BASE, ~ALTERA_AVALON_TIMER_STATUS_TO_MSK );
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}
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/*-----------------------------------------------------------*/
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void vPortSysTickHandler( void * context)
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{
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/* Increment the kernel tick. */
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if( xTaskIncrementTick() != pdFALSE )
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{
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vTaskSwitchContext();
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}
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/* Clear the interrupt. */
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IOWR_ALTERA_AVALON_TIMER_STATUS( SYS_CLK_BASE, ~ALTERA_AVALON_TIMER_STATUS_TO_MSK );
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}
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/*-----------------------------------------------------------*/
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/** This function is a re-implementation of the Altera provided function.
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* The function is re-implemented to prevent it from enabling an interrupt
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* when it is registered. Interrupts should only be enabled after the FreeRTOS.org
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* kernel has its scheduler started so that contexts are saved and switched
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* correctly.
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*/
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int _alt_ic_isr_register(alt_u32 ic_id, alt_u32 irq, alt_isr_func isr,
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void *isr_context, void *flags)
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{
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int rc = -EINVAL;
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alt_irq_context status;
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int id = irq; /* IRQ interpreted as the interrupt ID. */
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if (id < ALT_NIRQ)
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{
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/*
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* interrupts are disabled while the handler tables are updated to ensure
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* that an interrupt doesn't occur while the tables are in an inconsistant
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* state.
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*/
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status = alt_irq_disable_all ();
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alt_irq[id].handler = isr;
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alt_irq[id].context = isr_context;
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rc = (isr) ? alt_ic_irq_enable(ic_id, id) : alt_ic_irq_disable(ic_id, id);
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/* alt_irq_enable_all(status); This line is removed to prevent the interrupt from being immediately enabled. */
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}
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return rc;
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}
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/*-----------------------------------------------------------*/
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/*
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* FreeRTOS Kernel <DEVELOPMENT BRANCH>
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* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
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||||
*
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||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the NIOS2 port.
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*----------------------------------------------------------*/
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/* Standard Includes. */
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#include <string.h>
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#include <errno.h>
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/* Altera includes. */
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#include "sys/alt_irq.h"
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#include "sys/alt_exceptions.h"
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#include "altera_avalon_timer_regs.h"
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#include "priv/alt_irq_table.h"
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Interrupts are enabled. */
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#define portINITIAL_ESTATUS ( StackType_t ) 0x01
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int _alt_ic_isr_register(alt_u32 ic_id, alt_u32 irq, alt_isr_func isr,
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void *isr_context, void *flags);
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/*-----------------------------------------------------------*/
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/*
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* Setup the timer to generate the tick interrupts.
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*/
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static void prvSetupTimerInterrupt( void );
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/*
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* Call back for the alarm function.
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*/
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void vPortSysTickHandler( void * context);
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/*-----------------------------------------------------------*/
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static void prvReadGp( uint32_t *ulValue )
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{
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asm( "stw gp, (%0)" :: "r"(ulValue) );
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}
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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*/
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StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
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{
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StackType_t *pxFramePointer = pxTopOfStack - 1;
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StackType_t xGlobalPointer;
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prvReadGp( &xGlobalPointer );
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/* End of stack marker. */
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*pxTopOfStack = 0xdeadbeef;
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) pxFramePointer;
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pxTopOfStack--;
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*pxTopOfStack = xGlobalPointer;
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/* Space for R23 to R16. */
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pxTopOfStack -= 9;
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*pxTopOfStack = ( StackType_t ) pxCode;
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pxTopOfStack--;
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*pxTopOfStack = portINITIAL_ESTATUS;
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/* Space for R15 to R5. */
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pxTopOfStack -= 12;
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*pxTopOfStack = ( StackType_t ) pvParameters;
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/* Space for R3 to R1, muldiv and RA. */
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pxTopOfStack -= 5;
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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*/
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BaseType_t xPortStartScheduler( void )
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{
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/* Start the timer that generates the tick ISR. Interrupts are disabled
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here already. */
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prvSetupTimerInterrupt();
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/* Start the first task. */
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asm volatile ( " movia r2, restore_sp_from_pxCurrentTCB \n"
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" jmp r2 " );
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/* Should not get here! */
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return 0;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void )
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{
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/* It is unlikely that the NIOS2 port will require this function as there
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is nothing to return to. */
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}
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/*-----------------------------------------------------------*/
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/*
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* Setup the systick timer to generate the tick interrupts at the required
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* frequency.
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*/
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void prvSetupTimerInterrupt( void )
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{
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/* Try to register the interrupt handler. */
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if ( -EINVAL == _alt_ic_isr_register( SYS_CLK_IRQ_INTERRUPT_CONTROLLER_ID, SYS_CLK_IRQ, vPortSysTickHandler, 0x0, 0x0 ) )
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{
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/* Failed to install the Interrupt Handler. */
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asm( "break" );
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}
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else
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{
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/* Configure SysTick to interrupt at the requested rate. */
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IOWR_ALTERA_AVALON_TIMER_CONTROL( SYS_CLK_BASE, ALTERA_AVALON_TIMER_CONTROL_STOP_MSK );
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IOWR_ALTERA_AVALON_TIMER_PERIODL( SYS_CLK_BASE, ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) & 0xFFFF );
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IOWR_ALTERA_AVALON_TIMER_PERIODH( SYS_CLK_BASE, ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) >> 16 );
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IOWR_ALTERA_AVALON_TIMER_CONTROL( SYS_CLK_BASE, ALTERA_AVALON_TIMER_CONTROL_CONT_MSK | ALTERA_AVALON_TIMER_CONTROL_START_MSK | ALTERA_AVALON_TIMER_CONTROL_ITO_MSK );
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}
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/* Clear any already pending interrupts generated by the Timer. */
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IOWR_ALTERA_AVALON_TIMER_STATUS( SYS_CLK_BASE, ~ALTERA_AVALON_TIMER_STATUS_TO_MSK );
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}
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/*-----------------------------------------------------------*/
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void vPortSysTickHandler( void * context)
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{
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/* Increment the kernel tick. */
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if( xTaskIncrementTick() != pdFALSE )
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{
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vTaskSwitchContext();
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}
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/* Clear the interrupt. */
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IOWR_ALTERA_AVALON_TIMER_STATUS( SYS_CLK_BASE, ~ALTERA_AVALON_TIMER_STATUS_TO_MSK );
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}
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/*-----------------------------------------------------------*/
|
||||
|
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/** This function is a re-implementation of the Altera provided function.
|
||||
* The function is re-implemented to prevent it from enabling an interrupt
|
||||
* when it is registered. Interrupts should only be enabled after the FreeRTOS.org
|
||||
* kernel has its scheduler started so that contexts are saved and switched
|
||||
* correctly.
|
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*/
|
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int _alt_ic_isr_register(alt_u32 ic_id, alt_u32 irq, alt_isr_func isr,
|
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void *isr_context, void *flags)
|
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{
|
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int rc = -EINVAL;
|
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alt_irq_context status;
|
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int id = irq; /* IRQ interpreted as the interrupt ID. */
|
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|
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if (id < ALT_NIRQ)
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{
|
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/*
|
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* interrupts are disabled while the handler tables are updated to ensure
|
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* that an interrupt doesn't occur while the tables are in an inconsistant
|
||||
* state.
|
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*/
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|
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status = alt_irq_disable_all ();
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alt_irq[id].handler = isr;
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alt_irq[id].context = isr_context;
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rc = (isr) ? alt_ic_irq_enable(ic_id, id) : alt_ic_irq_disable(ic_id, id);
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/* alt_irq_enable_all(status); This line is removed to prevent the interrupt from being immediately enabled. */
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}
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return rc;
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}
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/*-----------------------------------------------------------*/
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||||
|
|
|
|||
|
|
@ -1,140 +1,139 @@
|
|||
/*
|
||||
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
|
||||
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: MIT
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
* https://www.FreeRTOS.org
|
||||
* https://github.com/FreeRTOS
|
||||
*
|
||||
*/
|
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|
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.extern vTaskSwitchContext
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|
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.set noat
|
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|
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# Exported to start the first task.
|
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.globl restore_sp_from_pxCurrentTCB
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|
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# Entry point for exceptions.
|
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.section .exceptions.entry.user, "xa"
|
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|
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# Save the entire context of a task.
|
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save_context:
|
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addi sp, sp, -116 # Create space on the stack.
|
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stw ra, 0(sp)
|
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# Leave a gap for muldiv 0
|
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stw at, 8(sp)
|
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stw r2, 12(sp)
|
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stw r3, 16(sp)
|
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stw r4, 20(sp)
|
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stw r5, 24(sp)
|
||||
stw r6, 28(sp)
|
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stw r7, 32(sp)
|
||||
stw r8, 36(sp)
|
||||
stw r9, 40(sp)
|
||||
stw r10, 44(sp)
|
||||
stw r11, 48(sp)
|
||||
stw r12, 52(sp)
|
||||
stw r13, 56(sp)
|
||||
stw r14, 60(sp)
|
||||
stw r15, 64(sp)
|
||||
rdctl r5, estatus # Save the eStatus
|
||||
stw r5, 68(sp)
|
||||
addi r15, ea, -4 # Instruction that caused exception
|
||||
stw r15, 72(sp) # Save as EA
|
||||
stw r16, 76(sp) # Save the remaining registers
|
||||
stw r17, 80(sp)
|
||||
stw r18, 84(sp)
|
||||
stw r19, 88(sp)
|
||||
stw r20, 92(sp)
|
||||
stw r21, 96(sp)
|
||||
stw r22, 100(sp)
|
||||
stw r23, 104(sp)
|
||||
stw gp, 108(sp)
|
||||
stw fp, 112(sp)
|
||||
|
||||
save_sp_to_pxCurrentTCB:
|
||||
movia et, pxCurrentTCB # Load the address of the pxCurrentTCB pointer
|
||||
ldw et, (et) # Load the value of the pxCurrentTCB pointer
|
||||
stw sp, (et) # Store the stack pointer into the top of the TCB
|
||||
|
||||
br irq_test_user # skip the section .exceptions.entry
|
||||
|
||||
.section .exceptions.irqtest, "xa"
|
||||
irq_test_user:
|
||||
/*
|
||||
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
|
||||
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: MIT
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
* https://www.FreeRTOS.org
|
||||
* https://github.com/FreeRTOS
|
||||
*
|
||||
*/
|
||||
|
||||
.section .exceptions.exit.user, "xa"
|
||||
restore_sp_from_pxCurrentTCB:
|
||||
movia et, pxCurrentTCB # Load the address of the pxCurrentTCB pointer
|
||||
ldw et, (et) # Load the value of the pxCurrentTCB pointer
|
||||
ldw sp, (et) # Load the stack pointer with the top value of the TCB
|
||||
|
||||
restore_context:
|
||||
ldw ra, 0(sp) # Restore the registers.
|
||||
# Leave a gap for muldiv 0.
|
||||
ldw at, 8(sp)
|
||||
ldw r2, 12(sp)
|
||||
ldw r3, 16(sp)
|
||||
ldw r4, 20(sp)
|
||||
ldw r5, 24(sp)
|
||||
ldw r6, 28(sp)
|
||||
ldw r7, 32(sp)
|
||||
ldw r8, 36(sp)
|
||||
ldw r9, 40(sp)
|
||||
ldw r10, 44(sp)
|
||||
ldw r11, 48(sp)
|
||||
ldw r12, 52(sp)
|
||||
ldw r13, 56(sp)
|
||||
ldw r14, 60(sp)
|
||||
ldw r15, 64(sp)
|
||||
ldw et, 68(sp) # Load the eStatus
|
||||
wrctl estatus, et # Write the eStatus
|
||||
ldw ea, 72(sp) # Load the Program Counter
|
||||
ldw r16, 76(sp)
|
||||
ldw r17, 80(sp)
|
||||
ldw r18, 84(sp)
|
||||
ldw r19, 88(sp)
|
||||
ldw r20, 92(sp)
|
||||
ldw r21, 96(sp)
|
||||
ldw r22, 100(sp)
|
||||
ldw r23, 104(sp)
|
||||
ldw gp, 108(sp)
|
||||
ldw fp, 112(sp)
|
||||
addi sp, sp, 116 # Release stack space
|
||||
|
||||
eret # Return to address ea, loading eStatus into Status.
|
||||
|
||||
.section .exceptions.soft, "xa"
|
||||
soft_exceptions:
|
||||
movhi r3, 0x003b /* upper half of trap opcode */
|
||||
ori r3, r3, 0x683a /* lower half of trap opcode */
|
||||
beq r2, r3, call_scheduler
|
||||
br exceptions_unknown_user # its something else
|
||||
|
||||
call_scheduler:
|
||||
stw ea, 72(sp) # EA is PC+4 so will skip over instruction causing exception
|
||||
movia r15, vTaskSwitchContext # Pick the next context - use long call version in place of "call"
|
||||
callr r15
|
||||
br restore_sp_from_pxCurrentTCB # Switch in the task context and restore.
|
||||
|
||||
.section .exceptions.unknown.user
|
||||
exceptions_unknown_user:
|
||||
|
||||
.extern vTaskSwitchContext
|
||||
|
||||
.set noat
|
||||
|
||||
# Exported to start the first task.
|
||||
.globl restore_sp_from_pxCurrentTCB
|
||||
|
||||
# Entry point for exceptions.
|
||||
.section .exceptions.entry.user, "xa"
|
||||
|
||||
# Save the entire context of a task.
|
||||
save_context:
|
||||
addi sp, sp, -116 # Create space on the stack.
|
||||
stw ra, 0(sp)
|
||||
# Leave a gap for muldiv 0
|
||||
stw at, 8(sp)
|
||||
stw r2, 12(sp)
|
||||
stw r3, 16(sp)
|
||||
stw r4, 20(sp)
|
||||
stw r5, 24(sp)
|
||||
stw r6, 28(sp)
|
||||
stw r7, 32(sp)
|
||||
stw r8, 36(sp)
|
||||
stw r9, 40(sp)
|
||||
stw r10, 44(sp)
|
||||
stw r11, 48(sp)
|
||||
stw r12, 52(sp)
|
||||
stw r13, 56(sp)
|
||||
stw r14, 60(sp)
|
||||
stw r15, 64(sp)
|
||||
rdctl r5, estatus # Save the eStatus
|
||||
stw r5, 68(sp)
|
||||
addi r15, ea, -4 # Instruction that caused exception
|
||||
stw r15, 72(sp) # Save as EA
|
||||
stw r16, 76(sp) # Save the remaining registers
|
||||
stw r17, 80(sp)
|
||||
stw r18, 84(sp)
|
||||
stw r19, 88(sp)
|
||||
stw r20, 92(sp)
|
||||
stw r21, 96(sp)
|
||||
stw r22, 100(sp)
|
||||
stw r23, 104(sp)
|
||||
stw gp, 108(sp)
|
||||
stw fp, 112(sp)
|
||||
|
||||
save_sp_to_pxCurrentTCB:
|
||||
movia et, pxCurrentTCB # Load the address of the pxCurrentTCB pointer
|
||||
ldw et, (et) # Load the value of the pxCurrentTCB pointer
|
||||
stw sp, (et) # Store the stack pointer into the top of the TCB
|
||||
|
||||
br irq_test_user # skip the section .exceptions.entry
|
||||
|
||||
.section .exceptions.irqtest, "xa"
|
||||
irq_test_user:
|
||||
|
||||
.section .exceptions.exit.user, "xa"
|
||||
restore_sp_from_pxCurrentTCB:
|
||||
movia et, pxCurrentTCB # Load the address of the pxCurrentTCB pointer
|
||||
ldw et, (et) # Load the value of the pxCurrentTCB pointer
|
||||
ldw sp, (et) # Load the stack pointer with the top value of the TCB
|
||||
|
||||
restore_context:
|
||||
ldw ra, 0(sp) # Restore the registers.
|
||||
# Leave a gap for muldiv 0.
|
||||
ldw at, 8(sp)
|
||||
ldw r2, 12(sp)
|
||||
ldw r3, 16(sp)
|
||||
ldw r4, 20(sp)
|
||||
ldw r5, 24(sp)
|
||||
ldw r6, 28(sp)
|
||||
ldw r7, 32(sp)
|
||||
ldw r8, 36(sp)
|
||||
ldw r9, 40(sp)
|
||||
ldw r10, 44(sp)
|
||||
ldw r11, 48(sp)
|
||||
ldw r12, 52(sp)
|
||||
ldw r13, 56(sp)
|
||||
ldw r14, 60(sp)
|
||||
ldw r15, 64(sp)
|
||||
ldw et, 68(sp) # Load the eStatus
|
||||
wrctl estatus, et # Write the eStatus
|
||||
ldw ea, 72(sp) # Load the Program Counter
|
||||
ldw r16, 76(sp)
|
||||
ldw r17, 80(sp)
|
||||
ldw r18, 84(sp)
|
||||
ldw r19, 88(sp)
|
||||
ldw r20, 92(sp)
|
||||
ldw r21, 96(sp)
|
||||
ldw r22, 100(sp)
|
||||
ldw r23, 104(sp)
|
||||
ldw gp, 108(sp)
|
||||
ldw fp, 112(sp)
|
||||
addi sp, sp, 116 # Release stack space
|
||||
|
||||
eret # Return to address ea, loading eStatus into Status.
|
||||
|
||||
.section .exceptions.soft, "xa"
|
||||
soft_exceptions:
|
||||
movhi r3, 0x003b /* upper half of trap opcode */
|
||||
ori r3, r3, 0x683a /* lower half of trap opcode */
|
||||
beq r2, r3, call_scheduler
|
||||
br exceptions_unknown_user # its something else
|
||||
|
||||
call_scheduler:
|
||||
stw ea, 72(sp) # EA is PC+4 so will skip over instruction causing exception
|
||||
movia r15, vTaskSwitchContext # Pick the next context - use long call version in place of "call"
|
||||
callr r15
|
||||
br restore_sp_from_pxCurrentTCB # Switch in the task context and restore.
|
||||
|
||||
.section .exceptions.unknown.user
|
||||
exceptions_unknown_user:
|
||||
|
|
|
|||
|
|
@ -1,110 +1,109 @@
|
|||
/*
|
||||
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
|
||||
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: MIT
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
* https://www.FreeRTOS.org
|
||||
* https://github.com/FreeRTOS
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef PORTMACRO_H
|
||||
#define PORTMACRO_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#include "sys/alt_irq.h"
|
||||
|
||||
/*-----------------------------------------------------------
|
||||
* Port specific definitions.
|
||||
*
|
||||
* The settings in this file configure FreeRTOS correctly for the
|
||||
* given hardware and compiler.
|
||||
*
|
||||
* These settings should not be altered.
|
||||
*-----------------------------------------------------------
|
||||
*/
|
||||
|
||||
/* Type definitions. */
|
||||
#define portCHAR char
|
||||
#define portFLOAT float
|
||||
#define portDOUBLE double
|
||||
#define portLONG long
|
||||
#define portSHORT short
|
||||
#define portSTACK_TYPE uint32_t
|
||||
#define portBASE_TYPE long
|
||||
|
||||
typedef portSTACK_TYPE StackType_t;
|
||||
typedef long BaseType_t;
|
||||
typedef unsigned long UBaseType_t;
|
||||
|
||||
#if( configUSE_16_BIT_TICKS == 1 )
|
||||
typedef uint16_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffff
|
||||
#else
|
||||
typedef uint32_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
|
||||
|
||||
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
|
||||
not need to be guarded with a critical section. */
|
||||
#define portTICK_TYPE_IS_ATOMIC 1
|
||||
#endif
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Architecture specifics. */
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
|
||||
#define portBYTE_ALIGNMENT 4
|
||||
#define portNOP() asm volatile ( "NOP" )
|
||||
#define portCRITICAL_NESTING_IN_TCB 1
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
extern void vTaskSwitchContext( void );
|
||||
#define portYIELD() asm volatile ( "trap" );
|
||||
#define portEND_SWITCHING_ISR( xSwitchRequired ) do { if( xSwitchRequired ) vTaskSwitchContext(); } while( 0 )
|
||||
|
||||
|
||||
/* Include the port_asm.S file where the Context saving/restoring is defined. */
|
||||
__asm__( "\n\t.globl save_context" );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
extern void vTaskEnterCritical( void );
|
||||
extern void vTaskExitCritical( void );
|
||||
|
||||
#define portDISABLE_INTERRUPTS() alt_irq_disable_all()
|
||||
#define portENABLE_INTERRUPTS() alt_irq_enable_all( 0x01 );
|
||||
#define portENTER_CRITICAL() vTaskEnterCritical()
|
||||
#define portEXIT_CRITICAL() vTaskExitCritical()
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Task function macros as described on the FreeRTOS.org WEB site. */
|
||||
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
|
||||
/*
|
||||
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
|
||||
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* SPDX-License-Identifier: MIT
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
* this software and associated documentation files (the "Software"), to deal in
|
||||
* the Software without restriction, including without limitation the rights to
|
||||
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
* the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in all
|
||||
* copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*
|
||||
* https://www.FreeRTOS.org
|
||||
* https://github.com/FreeRTOS
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef PORTMACRO_H
|
||||
#define PORTMACRO_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#include "sys/alt_irq.h"
|
||||
|
||||
/*-----------------------------------------------------------
|
||||
* Port specific definitions.
|
||||
*
|
||||
* The settings in this file configure FreeRTOS correctly for the
|
||||
* given hardware and compiler.
|
||||
*
|
||||
* These settings should not be altered.
|
||||
*-----------------------------------------------------------
|
||||
*/
|
||||
|
||||
/* Type definitions. */
|
||||
#define portCHAR char
|
||||
#define portFLOAT float
|
||||
#define portDOUBLE double
|
||||
#define portLONG long
|
||||
#define portSHORT short
|
||||
#define portSTACK_TYPE uint32_t
|
||||
#define portBASE_TYPE long
|
||||
|
||||
typedef portSTACK_TYPE StackType_t;
|
||||
typedef long BaseType_t;
|
||||
typedef unsigned long UBaseType_t;
|
||||
|
||||
#if( configUSE_16_BIT_TICKS == 1 )
|
||||
typedef uint16_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffff
|
||||
#else
|
||||
typedef uint32_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
|
||||
|
||||
/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
|
||||
not need to be guarded with a critical section. */
|
||||
#define portTICK_TYPE_IS_ATOMIC 1
|
||||
#endif
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Architecture specifics. */
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
|
||||
#define portBYTE_ALIGNMENT 4
|
||||
#define portNOP() asm volatile ( "NOP" )
|
||||
#define portCRITICAL_NESTING_IN_TCB 1
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
extern void vTaskSwitchContext( void );
|
||||
#define portYIELD() asm volatile ( "trap" );
|
||||
#define portEND_SWITCHING_ISR( xSwitchRequired ) do { if( xSwitchRequired ) vTaskSwitchContext(); } while( 0 )
|
||||
|
||||
|
||||
/* Include the port_asm.S file where the Context saving/restoring is defined. */
|
||||
__asm__( "\n\t.globl save_context" );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
extern void vTaskEnterCritical( void );
|
||||
extern void vTaskExitCritical( void );
|
||||
|
||||
#define portDISABLE_INTERRUPTS() alt_irq_disable_all()
|
||||
#define portENABLE_INTERRUPTS() alt_irq_enable_all( 0x01 );
|
||||
#define portENTER_CRITICAL() vTaskEnterCritical()
|
||||
#define portEXIT_CRITICAL() vTaskExitCritical()
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Task function macros as described on the FreeRTOS.org WEB site. */
|
||||
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue