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Completely re-generate the Zynq 7000 demo using the 2016.1 SDK tools.

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Introduce configUSE_TASK_FPU_SUPPORT into the GCC Cortex-A9 port to allow tasks to have an FPU context by default.
Add MikroC Cortex-M4F port.
This commit is contained in:
Richard Barry 2016-04-25 17:24:54 +00:00
parent 2ec97696db
commit 0721cf102a
323 changed files with 258970 additions and 18 deletions
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56
FreeRTOS/Source/portable/GCC/ARM_CA9/port.c
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@ -189,6 +189,10 @@ debugger. */
#define portTASK_RETURN_ADDRESS prvTaskExitError
#endif
/* The space on the stack required to hold the FPU registers. This is 32 64-bit
registers, plus a 32-bit status register. */
#define portFPU_REGISTER_WORDS ( ( 32 * 2 ) + 1 )
/*-----------------------------------------------------------*/
/*
@ -315,13 +319,32 @@ StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t px
/* The task will start with a critical nesting count of 0 as interrupts are
enabled. */
*pxTopOfStack = portNO_CRITICAL_NESTING;
pxTopOfStack--;
/* 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 = portNO_FLOATING_POINT_CONTEXT;
#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 ) );
pxTopOfStack--;
*pxTopOfStack = pdTRUE;
ulPortTaskHasFPUContext = pdTRUE;
}
#else
{
#error Invalid configUSE_TASK_FPU_SUPPORT setting - configUSE_TASK_FPU_SUPPORT must be set to 1, 2, or left undefined.
}
#endif
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
@ -493,17 +516,21 @@ void FreeRTOS_Tick_Handler( void )
}
/*-----------------------------------------------------------*/
void vPortTaskUsesFPU( void )
{
uint32_t ulInitialFPSCR = 0;
#if( configUSE_TASK_FPU_SUPPORT != 2 )
/* 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;
void vPortTaskUsesFPU( void )
{
uint32_t ulInitialFPSCR = 0;
/* Initialise the floating point status register. */
__asm volatile ( "FMXR FPSCR, %0" :: "r" (ulInitialFPSCR) );
}
/* 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) );
}
#endif /* configUSE_TASK_FPU_SUPPORT */
/*-----------------------------------------------------------*/
void vPortClearInterruptMask( uint32_t ulNewMaskValue )
@ -578,5 +605,6 @@ uint32_t ulReturn;
void vApplicationFPUSafeIRQHandler( uint32_t ulICCIAR )
{
( void ) ulICCIAR;
configASSERT( ( volatile void * ) NULL );
}