Merge branch 'main' into update-pxcurrentTCB

This commit is contained in:
chinglee-iot 2024-08-06 14:24:30 +08:00 committed by GitHub
commit 893fcc8ea0
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
51 changed files with 459 additions and 263 deletions

View file

@ -14,12 +14,12 @@ application projects. That way you will have the correct FreeRTOS source files
included, and the correct include paths configured. Once a demo application is
building and executing you can remove the demo application files, and start to
add in your own application source files. See the
[FreeRTOS Kernel Quick Start Guide](https://www.FreeRTOS.org/FreeRTOS-quick-start-guide.html)
[FreeRTOS Kernel Quick Start Guide](https://www.freertos.org/Documentation/01-FreeRTOS-quick-start/01-Beginners-guide/02-Quick-start-guide)
for detailed instructions and other useful links.
Additionally, for FreeRTOS kernel feature information refer to the
[Developer Documentation](https://www.FreeRTOS.org/features.html),
and [API Reference](https://www.FreeRTOS.org/a00106.html).
[Developer Documentation](https://www.freertos.org/Documentation/02-Kernel/02-Kernel-features/00-Developer-docs),
and [API Reference](https://www.freertos.org/Documentation/02-Kernel/04-API-references/01-Task-creation/00-TaskHandle).
Also for contributing and creating a Pull Request please refer to
[the instructions here](.github/CONTRIBUTING.md#contributing-via-pull-request).

View file

@ -30,7 +30,7 @@
* This is a simple main that will start the FreeRTOS-Kernel and run a periodic task
* that only delays if compiled with the template port, this project will do nothing.
* For more information on getting started please look here:
* https://freertos.org/FreeRTOS-quick-start-guide.html
* https://www.freertos.org/Documentation/01-FreeRTOS-quick-start/01-Beginners-guide/02-Quick-start-guide
*/
/* FreeRTOS includes. */

View file

@ -1645,7 +1645,7 @@ BaseType_t xQueueGiveMutexRecursive( QueueHandle_t xMutex ) PRIVILEGED_FUNCTION;
* or semaphores contained in the set is in a state where a queue read or
* semaphore take operation would be successful.
*
* Note 1: See the documentation on https://www.FreeRTOS.org/RTOS-queue-sets.html
* Note 1: See the documentation on https://www.freertos.org/Documentation/02-Kernel/04-API-references/07-Queue-sets/00-RTOS-queue-sets
* for reasons why queue sets are very rarely needed in practice as there are
* simpler methods of blocking on multiple objects.
*
@ -1742,7 +1742,7 @@ BaseType_t xQueueGiveMutexRecursive( QueueHandle_t xMutex ) PRIVILEGED_FUNCTION;
* See FreeRTOS/Source/Demo/Common/Minimal/QueueSet.c for an example using this
* function.
*
* Note 1: See the documentation on https://www.FreeRTOS.org/RTOS-queue-sets.html
* Note 1: See the documentation on https://www.freertos.org/Documentation/02-Kernel/04-API-references/07-Queue-sets/00-RTOS-queue-sets
* for reasons why queue sets are very rarely needed in practice as there are
* simpler methods of blocking on multiple objects.
*

2
list.c
View file

@ -166,7 +166,7 @@ void vListInsert( List_t * const pxList,
{
/* *** NOTE ***********************************************************
* If you find your application is crashing here then likely causes are
* listed below. In addition see https://www.FreeRTOS.org/FAQHelp.html for
* listed below. In addition see https://www.freertos.org/Why-FreeRTOS/FAQs for
* more tips, and ensure configASSERT() is defined!
* https://www.FreeRTOS.org/a00110.html#configASSERT
*

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -669,7 +669,7 @@ void vPortSetupTimerInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -694,7 +694,7 @@ void vPortSetupTimerInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1288,7 +1288,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -292,7 +292,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -801,7 +801,7 @@ __attribute__( ( weak ) ) void vPortSetupTimerInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -767,7 +767,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -1462,7 +1462,7 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -335,7 +335,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -886,7 +886,7 @@ static void vPortEnableVFP( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -853,7 +853,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -1605,7 +1605,7 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -323,7 +323,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -876,7 +876,7 @@ static void vPortEnableVFP( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -28,6 +28,7 @@
/* Standard includes. */
#include <stdlib.h>
#include <string.h>
/* Scheduler includes. */
#include "FreeRTOS.h"
@ -80,13 +81,22 @@
#define portTASK_RETURN_ADDRESS prvTaskExitError
#endif
/* The space on the stack required to hold the FPU registers. */
#if ( configFPU_D32 == 1 )
#define portFPU_REGISTER_WORDS ( ( 32 * 2 ) + 1 ) /* D0-D31 and FPSCR. */
#else
#define portFPU_REGISTER_WORDS ( ( 16 * 2 ) + 1 ) /* D0-D15 and FPSCR. */
#endif /* configFPU_D32 */
/*-----------------------------------------------------------*/
/*
* Starts the first task executing. This function is necessarily written in
* assembly code so is implemented in portASM.s.
* These functions are necessarily written in assembly code, so are implemented
* in portASM.S.
*/
extern void vPortRestoreTaskContext( void );
extern void vPortInitialiseFPSCR( void );
extern uint32_t ulReadAPSR( void );
/*
* Used to catch tasks that attempt to return from their implementing function.
@ -184,12 +194,33 @@ StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
/* The task will start with a critical nesting count of 0 as interrupts are
* enabled. */
*pxTopOfStack = portNO_CRITICAL_NESTING;
pxTopOfStack--;
#if ( configUSE_TASK_FPU_SUPPORT == 1 )
{
/* The task will start without a floating point context. A task that uses
* the floating point hardware must call vPortTaskUsesFPU() before executing
* any floating point instructions. */
pxTopOfStack--;
*pxTopOfStack = portNO_FLOATING_POINT_CONTEXT;
}
#elif ( configUSE_TASK_FPU_SUPPORT == 2 )
{
/* The task will start with a floating point context. Leave enough
* space for the registers - and ensure they are initialised to 0. */
pxTopOfStack -= portFPU_REGISTER_WORDS;
memset( pxTopOfStack, 0x00, portFPU_REGISTER_WORDS * sizeof( StackType_t ) );
/* Initialise the slot containing ulPortTaskHasFPUContext to true as
* the task starts with a floating point context. */
pxTopOfStack--;
*pxTopOfStack = pdTRUE;
ulPortTaskHasFPUContext = pdTRUE;
}
#else
{
#error "Invalid configUSE_TASK_FPU_SUPPORT value - configUSE_TASK_FPU_SUPPORT must be set to 1, 2, or left undefined."
}
#endif /* if ( configUSE_TASK_FPU_SUPPORT == 1 ) */
return pxTopOfStack;
}
@ -218,7 +249,7 @@ BaseType_t xPortStartScheduler( void )
/* Only continue if the CPU is not in User mode. The CPU must be in a
* Privileged mode for the scheduler to start. */
__asm volatile ( "MRS %0, APSR" : "=r" ( ulAPSR )::"memory" );
ulAPSR = ulReadAPSR();
ulAPSR &= portAPSR_MODE_BITS_MASK;
configASSERT( ulAPSR != portAPSR_USER_MODE );
@ -310,15 +341,17 @@ void FreeRTOS_Tick_Handler( void )
}
/*-----------------------------------------------------------*/
void vPortTaskUsesFPU( void )
{
uint32_t ulInitialFPSCR = 0;
#if ( configUSE_TASK_FPU_SUPPORT != 2 )
void vPortTaskUsesFPU( void )
{
/* A task is registering the fact that it needs an FPU context. Set the
* FPU flag (which is saved as part of the task context). */
ulPortTaskHasFPUContext = pdTRUE;
/* Initialise the floating point status register. */
__asm volatile ( "FMXR FPSCR, %0" ::"r" ( ulInitialFPSCR ) : "memory" );
}
vPortInitialiseFPSCR();
}
#endif /* configUSE_TASK_FPU_SUPPORT */
/*-----------------------------------------------------------*/

View file

@ -28,14 +28,14 @@
.text
.arm
.syntax unified
.set SYS_MODE, 0x1f
.set SVC_MODE, 0x13
.set IRQ_MODE, 0x12
.set CPSR_I_BIT, 0x80
/* Variables and functions. */
.extern ulMaxAPIPriorityMask
.extern _freertos_vector_table
.extern pxCurrentTCB
.extern vTaskSwitchContext
.extern vApplicationIRQHandler
@ -47,29 +47,38 @@
.global FreeRTOS_IRQ_Handler
.global FreeRTOS_SVC_Handler
.global vPortRestoreTaskContext
.global vPortInitialiseFPSCR
.global ulReadAPSR
.global vPortYield
.global vPortEnableInterrupts
.global vPortDisableInterrupts
.global ulPortSetInterruptMaskFromISR
.global ulPortCountLeadingZeros
.weak vApplicationSVCHandler
/*-----------------------------------------------------------*/
.macro portSAVE_CONTEXT
/* Save the LR and SPSR onto the system mode stack before switching to
system mode to save the remaining system mode registers. */
SRSDB sp!, #SYS_MODE
* system mode to save the remaining system mode registers. */
SRSDB SP!, #SYS_MODE
CPS #SYS_MODE
PUSH {R0-R12, R14}
/* Push the critical nesting count. */
LDR R2, ulCriticalNestingConst
LDR R2, =ulCriticalNesting
LDR R1, [R2]
PUSH {R1}
/* Does the task have a floating point context that needs saving? If
ulPortTaskHasFPUContext is 0 then no. */
LDR R2, ulPortTaskHasFPUContextConst
* ulPortTaskHasFPUContext is 0 then no. */
LDR R2, =ulPortTaskHasFPUContext
LDR R3, [R2]
CMP R3, #0
/* Save the floating point context, if any. */
FMRXNE R1, FPSCR
VMRSNE R1, FPSCR
VPUSHNE {D0-D15}
#if configFPU_D32 == 1
VPUSHNE {D16-D31}
@ -80,24 +89,24 @@
PUSH {R3}
/* Save the stack pointer in the TCB. */
LDR R0, pxCurrentTCBConst
LDR R0, =pxCurrentTCB
LDR R1, [R0]
STR SP, [R1]
.endm
; /**********************************************************************/
/*-----------------------------------------------------------*/
.macro portRESTORE_CONTEXT
/* Set the SP to point to the stack of the task being restored. */
LDR R0, pxCurrentTCBConst
LDR R0, =pxCurrentTCB
LDR R1, [R0]
LDR SP, [R1]
/* Is there a floating point context to restore? If the restored
ulPortTaskHasFPUContext is zero then no. */
LDR R0, ulPortTaskHasFPUContextConst
* ulPortTaskHasFPUContext is zero then no. */
LDR R0, =ulPortTaskHasFPUContext
POP {R1}
STR R1, [R0]
CMP R1, #0
@ -111,7 +120,7 @@
VMSRNE FPSCR, R0
/* Restore the critical section nesting depth. */
LDR R0, ulCriticalNestingConst
LDR R0, =ulCriticalNesting
POP {R1}
STR R1, [R0]
@ -120,29 +129,17 @@
POP {R0-R12, R14}
/* Return to the task code, loading CPSR on the way. */
RFEIA sp!
RFEIA SP!
.endm
/*-----------------------------------------------------------*/
/******************************************************************************
* SVC handler is used to yield.
*****************************************************************************/
.align 4
.type FreeRTOS_SVC_Handler, %function
FreeRTOS_SVC_Handler:
/* Save the context of the current task and select a new task to run. */
portSAVE_CONTEXT
LDR R0, vTaskSwitchContextConst
BLX R0
portRESTORE_CONTEXT
/******************************************************************************
/*
* void vPortRestoreTaskContext( void );
*
* vPortRestoreTaskContext is used to start the scheduler.
*****************************************************************************/
*/
.align 4
.type vPortRestoreTaskContext, %function
vPortRestoreTaskContext:
@ -150,72 +147,212 @@ vPortRestoreTaskContext:
CPS #SYS_MODE
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* void vPortInitialiseFPSCR( void );
*
* vPortInitialiseFPSCR is used to initialize the FPSCR register.
*/
.align 4
.type vPortInitialiseFPSCR, %function
vPortInitialiseFPSCR:
MOV R0, #0
VMSR FPSCR, R0
BX LR
/*-----------------------------------------------------------*/
/*
* uint32_t ulReadAPSR( void );
*
* ulReadAPSR is used to read the value of APSR context.
*/
.align 4
.type ulReadAPSR, %function
ulReadAPSR:
MRS R0, APSR
BX LR
/*-----------------------------------------------------------*/
/*
* void vPortYield( void );
*/
.align 4
.type vPortYield, %function
vPortYield:
SVC 0
ISB
BX LR
/*-----------------------------------------------------------*/
/*
* void vPortEnableInterrupts( void );
*/
.align 4
.type vPortEnableInterrupts, %function
vPortEnableInterrupts:
CPSIE I
BX LR
/*-----------------------------------------------------------*/
/*
* void vPortDisableInterrupts( void );
*/
.align 4
.type vPortDisableInterrupts, %function
vPortDisableInterrupts:
CPSID I
DSB
ISB
BX LR
/*-----------------------------------------------------------*/
/*
* uint32_t ulPortSetInterruptMaskFromISR( void );
*/
.align 4
.type ulPortSetInterruptMaskFromISR, %function
ulPortSetInterruptMaskFromISR:
MRS R0, CPSR
AND R0, R0, #CPSR_I_BIT
CPSID I
DSB
ISB
BX LR
/*-----------------------------------------------------------*/
/*
* void vApplicationSVCHandler( uint32_t ulSvcNumber );
*/
.align 4
.type vApplicationSVCHandler, %function
vApplicationSVCHandler:
B vApplicationSVCHandler
/*-----------------------------------------------------------*/
/*
* UBaseType_t ulPortCountLeadingZeros( UBaseType_t ulBitmap );
*
* According to the Procedure Call Standard for the ARM Architecture (AAPCS):
* - Parameter ulBitmap is passed in R0.
* - Return value must be in R0.
*/
.align 4
.type ulPortCountLeadingZeros, %function
ulPortCountLeadingZeros:
CLZ R0, R0
BX LR
/*-----------------------------------------------------------*/
/*
* SVC handler is used to yield.
*/
.align 4
.type FreeRTOS_SVC_Handler, %function
FreeRTOS_SVC_Handler:
PUSH { R0-R1 }
/* ---------------------------- Get Caller SVC Number ---------------------------- */
MRS R0, SPSR /* R0 = CPSR at the time of SVC. */
TST R0, #0x20 /* Check Thumb bit (5) in CPSR. */
LDRHNE R0, [LR, #-0x2] /* If Thumb, load halfword. */
BICNE R0, R0, #0xFF00 /* And extract immidiate field (i.e. SVC number). */
LDREQ R0, [LR, #-0x4] /* If ARM, load word. */
BICEQ R0, R0, #0xFF000000 /* And extract immidiate field (i.e. SVC number). */
/* --------------------------------- SVC Routing --------------------------------- */
CMP R0, #0
BEQ svcPortYield
BNE svcApplicationCall
svcPortYield:
POP { R0-R1 }
portSAVE_CONTEXT
BLX vTaskSwitchContext
portRESTORE_CONTEXT
svcApplicationCall:
POP { R0-R1 }
portSAVE_CONTEXT
BLX vApplicationSVCHandler
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
.align 4
.type FreeRTOS_IRQ_Handler, %function
FreeRTOS_IRQ_Handler:
/* Return to the interrupted instruction. */
SUB lr, lr, #4
SUB LR, LR, #4
/* Push the return address and SPSR. */
PUSH {lr}
MRS lr, SPSR
PUSH {lr}
PUSH {LR}
MRS LR, SPSR
PUSH {LR}
/* Change to supervisor mode to allow reentry. */
CPS #0x13
CPS #SVC_MODE
/* Push used registers. */
PUSH {r0-r3, r12}
PUSH {R0-R3, R12}
/* Increment nesting count. r3 holds the address of ulPortInterruptNesting
for future use. r1 holds the original ulPortInterruptNesting value for
future use. */
LDR r3, ulPortInterruptNestingConst
LDR r1, [r3]
ADD r0, r1, #1
STR r0, [r3]
* for future use. r1 holds the original ulPortInterruptNesting value for
* future use. */
LDR R3, =ulPortInterruptNesting
LDR R1, [R3]
ADD R0, R1, #1
STR R0, [R3]
/* Ensure bit 2 of the stack pointer is clear. r2 holds the bit 2 value for
future use. */
MOV r0, sp
AND r2, r0, #4
SUB sp, sp, r2
* future use. */
MOV R0, SP
AND R2, R0, #4
SUB SP, SP, R2
/* Call the interrupt handler. */
PUSH {r0-r3, lr}
LDR r1, vApplicationIRQHandlerConst
BLX r1
POP {r0-r3, lr}
ADD sp, sp, r2
PUSH {R0-R3, LR}
BLX vApplicationIRQHandler
POP {R0-R3, LR}
ADD SP, SP, R2
/* Disable IRQs incase vApplicationIRQHandler enabled them for re-entry. */
CPSID i
DSB
ISB
/* Write to the EOI register. */
LDR r0, ulICCEOIRConst
LDR r2, [r0]
STR r0, [r2]
LDR R0, =ulICCEOIR
LDR R2, [R0]
STR R0, [R2]
/* Restore the old nesting count. */
STR r1, [r3]
STR R1, [R3]
/* A context switch is never performed if the nesting count is not 0. */
CMP r1, #0
CMP R1, #0
BNE exit_without_switch
/* Did the interrupt request a context switch? r1 holds the address of
ulPortYieldRequired and r0 the value of ulPortYieldRequired for future
use. */
LDR r1, ulPortYieldRequiredConst
LDR r0, [r1]
CMP r0, #0
* ulPortYieldRequired and r0 the value of ulPortYieldRequired for future
* use. */
LDR R1, =ulPortYieldRequired
LDR R0, [R1]
CMP R0, #0
BNE switch_before_exit
exit_without_switch:
/* No context switch. Restore used registers, LR_irq and SPSR before
returning. */
POP {r0-r3, r12}
* returning. */
POP {R0-R3, R12}
CPS #IRQ_MODE
POP {LR}
MSR SPSR_cxsf, LR
@ -224,13 +361,13 @@ exit_without_switch:
switch_before_exit:
/* A context switch is to be performed. Clear the context switch pending
flag. */
MOV r0, #0
STR r0, [r1]
* flag. */
MOV R0, #0
STR R0, [R1]
/* Restore used registers, LR-irq and SPSR before saving the context
to the task stack. */
POP {r0-r3, r12}
* to the task stack. */
POP {R0-R3, R12}
CPS #IRQ_MODE
POP {LR}
MSR SPSR_cxsf, LR
@ -238,23 +375,15 @@ switch_before_exit:
portSAVE_CONTEXT
/* Call the function that selects the new task to execute.
vTaskSwitchContext() if vTaskSwitchContext() uses LDRD or STRD
instructions, or 8 byte aligned stack allocated data. LR does not need
saving as a new LR will be loaded by portRESTORE_CONTEXT anyway. */
LDR R0, vTaskSwitchContextConst
BLX R0
* vTaskSwitchContext() if vTaskSwitchContext() uses LDRD or STRD
* instructions, or 8 byte aligned stack allocated data. LR does not need
* saving as a new LR will be loaded by portRESTORE_CONTEXT anyway. */
BLX vTaskSwitchContext
/* Restore the context of, and branch to, the task selected to execute
next. */
* next. */
portRESTORE_CONTEXT
ulICCEOIRConst: .word ulICCEOIR
pxCurrentTCBConst: .word pxCurrentTCB
ulCriticalNestingConst: .word ulCriticalNesting
ulPortTaskHasFPUContextConst: .word ulPortTaskHasFPUContext
vTaskSwitchContextConst: .word vTaskSwitchContext
vApplicationIRQHandlerConst: .word vApplicationIRQHandler
ulPortInterruptNestingConst: .word ulPortInterruptNesting
ulPortYieldRequiredConst: .word ulPortYieldRequired
/*-----------------------------------------------------------*/
.end

View file

@ -88,47 +88,31 @@ typedef uint32_t TickType_t;
}
#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
#define portYIELD() \
__asm volatile ( "SWI 0 \n" \
"ISB " ::: "memory" );
void vPortYield( void );
/*-----------------------------------------------------------
* Critical section control
*----------------------------------------------------------*/
#define portYIELD() vPortYield();
/*-----------------------------------------------------------*/
/*
* Critical section management.
*/
extern void vPortEnterCritical( void );
extern void vPortExitCritical( void );
extern uint32_t ulPortSetInterruptMask( void );
extern void vPortClearInterruptMask( uint32_t ulNewMaskValue );
extern void vPortInstallFreeRTOSVectorTable( void );
/* The I bit within the CPSR. */
#define portINTERRUPT_ENABLE_BIT ( 1 << 7 )
extern void vPortEnableInterrupts( void );
extern void vPortDisableInterrupts( void );
extern uint32_t ulPortSetInterruptMaskFromISR( void );
/* In the absence of a priority mask register, these functions and macros
* globally enable and disable interrupts. */
#define portENTER_CRITICAL() vPortEnterCritical();
#define portEXIT_CRITICAL() vPortExitCritical();
#define portENABLE_INTERRUPTS() __asm volatile ( "CPSIE i \n" ::: "memory" );
#define portDISABLE_INTERRUPTS() \
__asm volatile ( "CPSID i \n" \
"DSB \n" \
"ISB " ::: "memory" );
__attribute__( ( always_inline ) ) static __inline uint32_t portINLINE_SET_INTERRUPT_MASK_FROM_ISR( void )
{
volatile uint32_t ulCPSR;
__asm volatile ( "MRS %0, CPSR" : "=r" ( ulCPSR )::"memory" );
ulCPSR &= portINTERRUPT_ENABLE_BIT;
portDISABLE_INTERRUPTS();
return ulCPSR;
}
#define portSET_INTERRUPT_MASK_FROM_ISR() portINLINE_SET_INTERRUPT_MASK_FROM_ISR()
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) do { if( x == 0 ) portENABLE_INTERRUPTS( ); } while( 0 )
#define portENABLE_INTERRUPTS() vPortEnableInterrupts();
#define portDISABLE_INTERRUPTS() vPortDisableInterrupts();
#define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMaskFromISR();
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) do { if( x == 0 ) portENABLE_INTERRUPTS(); } while( 0 )
/*-----------------------------------------------------------*/
@ -148,9 +132,27 @@ __attribute__( ( always_inline ) ) static __inline uint32_t portINLINE_SET_INTER
* handler for whichever peripheral is used to generate the RTOS tick. */
void FreeRTOS_Tick_Handler( void );
/* Any task that uses the floating point unit MUST call vPortTaskUsesFPU()
* before any floating point instructions are executed. */
void vPortTaskUsesFPU( void );
/**
* @brief Returns the number of leading zeros in a 32 bit variable.
*
* @param[in] ulBitmap 32-Bit number to count leading zeros in.
*
* @return The number of leading zeros in ulBitmap.
*/
UBaseType_t ulPortCountLeadingZeros( UBaseType_t ulBitmap );
/* If configUSE_TASK_FPU_SUPPORT is set to 1 (or left undefined) then tasks are
* created without an FPU context and must call vPortTaskUsesFPU() to give
* themselves an FPU context before using any FPU instructions. If
* configUSE_TASK_FPU_SUPPORT is set to 2 then all tasks will have an FPU
* context by default. */
#if ( configUSE_TASK_FPU_SUPPORT != 2 )
void vPortTaskUsesFPU( void );
#else
/* Each task has an FPU context already, so define this function as a
* no-op. */
#define vPortTaskUsesFPU()
#endif
#define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()
#define portLOWEST_INTERRUPT_PRIORITY ( ( ( uint32_t ) configUNIQUE_INTERRUPT_PRIORITIES ) - 1UL )
@ -163,19 +165,15 @@ void vPortTaskUsesFPU( void );
#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
/* Store/clear the ready priorities in a bit map. */
/* Store, clear and get the ready priorities in a bit map. */
#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
/*-----------------------------------------------------------*/
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( uint32_t ) __builtin_clz( uxReadyPriorities ) )
#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ulPortCountLeadingZeros( ( uxTopReadyPriority ) ) )
#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
#define portNOP() __asm volatile ( "NOP" )
#define portINLINE __inline
#define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
/* *INDENT-OFF* */

View file

@ -427,7 +427,7 @@ uint32_t ulPortSetInterruptMask( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( portICCRPR_RUNNING_PRIORITY_REGISTER >= ( uint32_t ) ( configMAX_API_CALL_INTERRUPT_PRIORITY << portPRIORITY_SHIFT ) );
/* Priority grouping: The interrupt controller (GIC) allows the bits

View file

@ -205,7 +205,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handler. For help installing the FreeRTOS handler, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -246,7 +246,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -709,7 +709,7 @@ __weak void vPortSetupTimerInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -284,7 +284,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -753,7 +753,7 @@ __weak void vPortSetupTimerInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -748,7 +748,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -1336,7 +1336,7 @@ void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -272,7 +272,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -741,7 +741,7 @@ __weak void vPortSetupTimerInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -1650,7 +1650,7 @@ BaseType_t xPortStartScheduler( void ) /* PRIVILEGED_FUNCTION */
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -2041,7 +2041,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -892,7 +892,7 @@ BaseType_t xPortIsInsideInterrupt( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -465,7 +465,7 @@ uint32_t ulPortSetInterruptMask( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( portICCRPR_RUNNING_PRIORITY_REGISTER >= ( configMAX_API_CALL_INTERRUPT_PRIORITY << portPRIORITY_SHIFT ) );
/* Priority grouping: The interrupt controller (GIC) allows the bits

View file

@ -770,7 +770,7 @@ __asm uint32_t vPortGetIPSR( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -866,7 +866,7 @@ __asm uint32_t vPortGetIPSR( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -852,7 +852,7 @@ BaseType_t xPortStartScheduler( void )
*
* Assertion failures here indicate incorrect installation of the
* FreeRTOS handlers. For help installing the FreeRTOS handlers, see
* https://www.FreeRTOS.org/FAQHelp.html.
* https://www.freertos.org/Why-FreeRTOS/FAQs.
*
* Systems with a configurable address for the interrupt vector table
* can also encounter assertion failures or even system faults here if
@ -1602,7 +1602,7 @@ __asm uint32_t prvPortGetIPSR( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -852,7 +852,7 @@ __asm uint32_t vPortGetIPSR( void )
*
* The following links provide detailed information:
* https://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
* https://www.FreeRTOS.org/FAQHelp.html */
* https://www.freertos.org/Why-FreeRTOS/FAQs */
configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
}

View file

@ -420,36 +420,19 @@ static void vPortSystemTickHandler( int sig )
( void ) sig;
/* uint64_t xExpectedTicks; */
uxCriticalNesting++; /* Signals are blocked in this signal handler. */
#if ( configUSE_PREEMPTION == 1 )
pxThreadToSuspend = prvGetThreadFromTask( xTaskGetCurrentTaskHandle() );
#endif
/* Tick Increment, accounting for any lost signals or drift in
* the timer. */
/*
* Comment code to adjust timing according to full demo requirements
* xExpectedTicks = (prvGetTimeNs() - prvStartTimeNs)
* / (portTICK_RATE_MICROSECONDS * 1000);
* do { */
xTaskIncrementTick();
/* prvTickCount++;
* } while (prvTickCount < xExpectedTicks);
*/
#if ( configUSE_PREEMPTION == 1 )
if( xTaskIncrementTick() != pdFALSE )
{
/* Select Next Task. */
vTaskSwitchContext();
pxThreadToResume = prvGetThreadFromTask( xTaskGetCurrentTaskHandle() );
prvSwitchThread( pxThreadToResume, pxThreadToSuspend );
#endif
}
uxCriticalNesting--;
}

View file

@ -39,14 +39,6 @@
#include "task.h"
#include "stream_buffer.h"
#if ( configUSE_TASK_NOTIFICATIONS != 1 )
#error configUSE_TASK_NOTIFICATIONS must be set to 1 to build stream_buffer.c
#endif
#if ( INCLUDE_xTaskGetCurrentTaskHandle != 1 )
#error INCLUDE_xTaskGetCurrentTaskHandle must be set to 1 to build stream_buffer.c
#endif
/* The MPU ports require MPU_WRAPPERS_INCLUDED_FROM_API_FILE to be defined
* for the header files above, but not in this file, in order to generate the
* correct privileged Vs unprivileged linkage and placement. */
@ -58,6 +50,14 @@
* configUSE_STREAM_BUFFERS is set to 1 in FreeRTOSConfig.h. */
#if ( configUSE_STREAM_BUFFERS == 1 )
#if ( configUSE_TASK_NOTIFICATIONS != 1 )
#error configUSE_TASK_NOTIFICATIONS must be set to 1 to build stream_buffer.c
#endif
#if ( INCLUDE_xTaskGetCurrentTaskHandle != 1 )
#error INCLUDE_xTaskGetCurrentTaskHandle must be set to 1 to build stream_buffer.c
#endif
/* If the user has not provided application specific Rx notification macros,
* or #defined the notification macros away, then provide default implementations
* that uses task notifications. */

63
tasks.c
View file

@ -3868,9 +3868,30 @@ void vTaskSuspendAll( void )
#if ( configNUMBER_OF_CORES == 1 )
{
/* A critical section is not required as the variable is of type
* BaseType_t. Please read Richard Barry's reply in the following link to a
* post in the FreeRTOS support forum before reporting this as a bug! -
* https://goo.gl/wu4acr */
* BaseType_t. Each task maintains its own context, and a context switch
* cannot occur if the variable is non zero. So, as long as the writing
* from the register back into the memory is atomic, it is not a
* problem.
*
* Consider the following scenario, which starts with
* uxSchedulerSuspended at zero.
*
* 1. load uxSchedulerSuspended into register.
* 2. Now a context switch causes another task to run, and the other
* task uses the same variable. The other task will see the variable
* as zero because the variable has not yet been updated by the
* original task. Eventually the original task runs again. **That can
* only happen when uxSchedulerSuspended is once again zero**. When
* the original task runs again, the contents of the CPU registers
* are restored to exactly how they were when it was switched out -
* therefore the value it read into the register still matches the
* value of the uxSchedulerSuspended variable.
*
* 3. increment register.
* 4. store register into uxSchedulerSuspended. The value restored to
* uxSchedulerSuspended will be the correct value of 1, even though
* the variable was used by other tasks in the mean time.
*/
/* portSOFTWARE_BARRIER() is only implemented for emulated/simulated ports that
* do not otherwise exhibit real time behaviour. */
@ -8096,6 +8117,22 @@ TickType_t uxTaskResetEventItemValue( void )
{
listREMOVE_ITEM( &( pxTCB->xStateListItem ) );
prvAddTaskToReadyList( pxTCB );
#if ( configUSE_TICKLESS_IDLE != 0 )
{
/* If a task is blocked waiting for a notification then
* xNextTaskUnblockTime might be set to the blocked task's time
* out time. If the task is unblocked for a reason other than
* a timeout xNextTaskUnblockTime is normally left unchanged,
* because it will automatically get reset to a new value when
* the tick count equals xNextTaskUnblockTime. However if
* tickless idling is used it might be more important to enter
* sleep mode at the earliest possible time - so reset
* xNextTaskUnblockTime here to ensure it is updated at the
* earliest possible time. */
prvResetNextTaskUnblockTime();
}
#endif
}
else
{
@ -8214,6 +8251,22 @@ TickType_t uxTaskResetEventItemValue( void )
{
listREMOVE_ITEM( &( pxTCB->xStateListItem ) );
prvAddTaskToReadyList( pxTCB );
#if ( configUSE_TICKLESS_IDLE != 0 )
{
/* If a task is blocked waiting for a notification then
* xNextTaskUnblockTime might be set to the blocked task's time
* out time. If the task is unblocked for a reason other than
* a timeout xNextTaskUnblockTime is normally left unchanged,
* because it will automatically get reset to a new value when
* the tick count equals xNextTaskUnblockTime. However if
* tickless idling is used it might be more important to enter
* sleep mode at the earliest possible time - so reset
* xNextTaskUnblockTime here to ensure it is updated at the
* earliest possible time. */
prvResetNextTaskUnblockTime();
}
#endif
}
else
{
@ -8657,7 +8710,7 @@ static void prvAddCurrentTaskToDelayedList( TickType_t xTicksToWait,
#endif /* #if ( ( configSUPPORT_STATIC_ALLOCATION == 1 ) && ( configKERNEL_PROVIDED_STATIC_MEMORY == 1 ) && ( portUSING_MPU_WRAPPERS == 0 ) ) */
/*-----------------------------------------------------------*/
#if ( ( configSUPPORT_STATIC_ALLOCATION == 1 ) && ( configKERNEL_PROVIDED_STATIC_MEMORY == 1 ) && ( portUSING_MPU_WRAPPERS == 0 ) )
#if ( ( configSUPPORT_STATIC_ALLOCATION == 1 ) && ( configKERNEL_PROVIDED_STATIC_MEMORY == 1 ) && ( portUSING_MPU_WRAPPERS == 0 ) && ( configUSE_TIMERS == 1 ) )
/*
* This is the kernel provided implementation of vApplicationGetTimerTaskMemory()
@ -8678,7 +8731,7 @@ static void prvAddCurrentTaskToDelayedList( TickType_t xTicksToWait,
*puxTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH;
}
#endif /* #if ( ( configSUPPORT_STATIC_ALLOCATION == 1 ) && ( configKERNEL_PROVIDED_STATIC_MEMORY == 1 ) && ( portUSING_MPU_WRAPPERS == 0 ) ) */
#endif /* #if ( ( configSUPPORT_STATIC_ALLOCATION == 1 ) && ( configKERNEL_PROVIDED_STATIC_MEMORY == 1 ) && ( portUSING_MPU_WRAPPERS == 0 ) && ( configUSE_TIMERS == 1 ) ) */
/*-----------------------------------------------------------*/
/*