253 lines
8.8 KiB
C
253 lines
8.8 KiB
C
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/*
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* FreeRTOS Kernel V10.2.1
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* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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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
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* 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,
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* 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
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* 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
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* 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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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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#ifndef PORTMACRO_H
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#define PORTMACRO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*-----------------------------------------------------------
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* Port specific definitions.
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*
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* The settings in this file configure FreeRTOS correctly for the
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* given hardware and compiler.
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*
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* These settings should not be altered.
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*-----------------------------------------------------------
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*/
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/* Type definitions. */
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#define portCHAR char
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#define portFLOAT float
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#define portDOUBLE double
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#define portLONG long
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#define portSHORT short
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#define portSTACK_TYPE uint32_t
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#define portBASE_TYPE long
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typedef portSTACK_TYPE StackType_t;
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typedef long BaseType_t;
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typedef unsigned long UBaseType_t;
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#if( configUSE_16_BIT_TICKS == 1 )
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typedef uint16_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) 0xffff
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#else
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typedef uint32_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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#endif
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/*-----------------------------------------------------------*/
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/* Hardware specifics. */
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#define portBYTE_ALIGNMENT 8
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#define portSTACK_GROWTH -1
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#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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/*-----------------------------------------------------------*/
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/* Critical section management. */
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#define portIPL_SHIFT ( 10UL )
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/* Don't straddle the CEE bit. Interrupts calling FreeRTOS functions should
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never have higher IPL bits set anyway. */
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#define portALL_IPL_BITS ( 0x7FUL << portIPL_SHIFT )
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#define portSW0_BIT ( 0x01 << 8 )
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/* Interrupt priority conversion */
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#define portIPL_TO_CODE( iplNumber ) ( ( iplNumber >> 1 ) & 0x03ul )
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#define portCODE_TO_IPL( iplCode ) ( ( iplCode << 1 ) | 0x01ul )
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/*-----------------------------------------------------------*/
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static inline uint32_t ulPortGetCP0Status( void )
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{
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uint32_t rv;
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__asm volatile(
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"\n\t"
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"mfc0 %0,$12,0 \n\t"
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: "=r" ( rv ) :: );
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return rv;
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}
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/*-----------------------------------------------------------*/
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static inline void vPortSetCP0Status( uint32_t new_status)
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{
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( void ) new_status;
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__asm__ __volatile__(
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"\n\t"
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"mtc0 %0,$12,0 \n\t"
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"ehb \n\t"
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:
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:"r" ( new_status ) : );
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}
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/*-----------------------------------------------------------*/
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static inline uint32_t ulPortGetCP0Cause( void )
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{
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uint32_t rv;
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__asm volatile(
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"\n\t"
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"mfc0 %0,$13,0 \n\t"
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: "=r" ( rv ) :: );
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return rv;
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}
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/*-----------------------------------------------------------*/
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static inline void vPortSetCP0Cause( uint32_t new_cause )
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{
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( void ) new_cause;
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__asm__ __volatile__(
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"\n\t"
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"mtc0 %0,$13,0 \n\t"
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"ehb \n\t"
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:
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:"r" ( new_cause ) : );
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}
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/*-----------------------------------------------------------*/
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/* This clears the IPL bits, then sets them to
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configMAX_SYSCALL_INTERRUPT_PRIORITY. An extra check is performed if
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configASSERT() is defined to ensure an assertion handler does not inadvertently
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attempt to lower the IPL when the call to assert was triggered because the IPL
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value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY when an ISR
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safe FreeRTOS API function was executed. ISR safe FreeRTOS API functions are
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those that end in FromISR. FreeRTOS maintains a separate interrupt API to
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ensure API function and interrupt entry is as fast and as simple as possible. */
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#ifdef configASSERT
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#define portDISABLE_INTERRUPTS() \
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{ \
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uint32_t ulStatus; \
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/* Mask interrupts at and below the kernel interrupt priority. */ \
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ulStatus = ulPortGetCP0Status(); \
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/* Is the current IPL below configMAX_SYSCALL_INTERRUPT_PRIORITY? */ \
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if( ( ( ulStatus & portALL_IPL_BITS ) >> portIPL_SHIFT ) < configMAX_SYSCALL_INTERRUPT_PRIORITY ) \
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{ \
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ulStatus &= ~portALL_IPL_BITS; \
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vPortSetCP0Status( ( ulStatus | ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
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} \
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}
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#else /* configASSERT */
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#define portDISABLE_INTERRUPTS() \
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{ \
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uint32_t ulStatus; \
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/* Mask interrupts at and below the kernel interrupt priority. */ \
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ulStatus = ulPortGetCP0Status(); \
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ulStatus &= ~portALL_IPL_BITS; \
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vPortSetCP0Status( ( ulStatus | ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
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}
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#endif /* configASSERT */
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#define portENABLE_INTERRUPTS() \
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{ \
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uint32_t ulStatus; \
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/* Unmask all interrupts. */ \
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ulStatus = ulPortGetCP0Status(); \
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ulStatus &= ~portALL_IPL_BITS; \
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vPortSetCP0Status( ulStatus ); \
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}
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extern void vTaskEnterCritical( void );
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extern void vTaskExitCritical( void );
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#define portCRITICAL_NESTING_IN_TCB 1
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#define portENTER_CRITICAL() vTaskEnterCritical()
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#define portEXIT_CRITICAL() vTaskExitCritical()
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extern UBaseType_t uxPortSetInterruptMaskFromISR();
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extern void vPortClearInterruptMaskFromISR( UBaseType_t );
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#define portSET_INTERRUPT_MASK_FROM_ISR() uxPortSetInterruptMaskFromISR()
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#define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedStatusRegister ) vPortClearInterruptMaskFromISR( uxSavedStatusRegister )
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#ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
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#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
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#endif
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#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
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/* Check the configuration. */
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#if( configMAX_PRIORITIES > 32 )
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#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
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#endif
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/* Store/clear the ready priorities in a bit map. */
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#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
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#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
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/*-----------------------------------------------------------*/
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#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - _clz( ( uxReadyPriorities ) ) )
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#endif /* taskRECORD_READY_PRIORITY */
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/*-----------------------------------------------------------*/
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/* Task utilities. */
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#define portYIELD() \
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{ \
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uint32_t ulCause; \
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/* Trigger software interrupt. */ \
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ulCause = ulPortGetCP0Cause(); \
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ulCause |= portSW0_BIT; \
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vPortSetCP0Cause( ulCause ); \
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}
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extern volatile UBaseType_t uxInterruptNesting;
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#define portASSERT_IF_IN_ISR() configASSERT( uxInterruptNesting == 0 )
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#define portNOP() __asm volatile ( "nop" )
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/*-----------------------------------------------------------*/
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/* Task function macros as described on the FreeRTOS.org WEB site. */
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#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) __attribute__((noreturn))
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#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
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/*-----------------------------------------------------------*/
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#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) \
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{ \
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portYIELD(); \
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}
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/* Required by the kernel aware debugger. */
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#ifdef __DEBUG
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#define portREMOVE_STATIC_QUALIFIER
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* PORTMACRO_H */
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