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Soren Ptak 2023-09-05 17:24:04 -04:00 • committed by GitHub
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67
portable/ThirdParty/XCC/Xtensa/port.c vendored
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@ -37,34 +37,39 @@
/* Defined in portasm.h */
extern void _frxt_tick_timer_init(void);
extern void _frxt_tick_timer_init( void );
/* Defined in xtensa_context.S */
extern void _xt_coproc_init(void);
extern void _xt_coproc_init( void );
/*-----------------------------------------------------------*/
/* We require the address of the pxCurrentTCB variable, but don't want to know
any details of its type. */
* any details of its type. */
typedef void TCB_t;
extern volatile TCB_t * volatile pxCurrentTCB;
unsigned port_xSchedulerRunning = 0; // Duplicate of inaccessible xSchedulerRunning; needed at startup to avoid counting nesting
unsigned port_interruptNesting = 0; // Interrupt nesting level
unsigned port_xSchedulerRunning = 0; /* Duplicate of inaccessible xSchedulerRunning; needed at startup to avoid counting nesting */
unsigned port_interruptNesting = 0; /* Interrupt nesting level */
/*-----------------------------------------------------------*/
// User exception dispatcher when exiting
void _xt_user_exit(void);
/* User exception dispatcher when exiting */
void _xt_user_exit( void );
/*
* Stack initialization
*/
#if portUSING_MPU_WRAPPERS
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters, BaseType_t xRunPrivileged )
StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
TaskFunction_t pxCode,
void * pvParameters,
BaseType_t xRunPrivileged )
#else
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
TaskFunction_t pxCode,
void * pvParameters )
#endif
{
StackType_t * sp;
@ -129,18 +134,18 @@ StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t px
void vPortEndScheduler( void )
{
/* It is unlikely that the Xtensa port will get stopped. If required simply
disable the tick interrupt here. */
* disable the tick interrupt here. */
}
/*-----------------------------------------------------------*/
BaseType_t xPortStartScheduler( void )
{
// Interrupts are disabled at this point and stack contains PS with enabled interrupts when task context is restored
/* Interrupts are disabled at this point and stack contains PS with enabled interrupts when task context is restored */
#if XCHAL_CP_NUM > 0
/* Initialize co-processor management for tasks. Leave CPENABLE alone. */
_xt_coproc_init();
/* Initialize co-processor management for tasks. Leave CPENABLE alone. */
_xt_coproc_init();
#endif
/* Init the tick divisor value */
@ -150,14 +155,14 @@ BaseType_t xPortStartScheduler( void )
_frxt_tick_timer_init();
#if XT_USE_THREAD_SAFE_CLIB
// Init C library
vPortClibInit();
/* Init C library */
vPortClibInit();
#endif
port_xSchedulerRunning = 1;
// Cannot be directly called from C; never returns
__asm__ volatile ("call0 _frxt_dispatch\n");
/* Cannot be directly called from C; never returns */
__asm__ volatile ( "call0 _frxt_dispatch\n" );
/* Should not get here. */
return pdTRUE;
@ -190,19 +195,19 @@ BaseType_t xPortSysTickHandler( void )
* Used to set coprocessor area in stack. Current hack is to reuse MPU pointer for coprocessor area.
*/
#if portUSING_MPU_WRAPPERS
void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
const struct xMEMORY_REGION * const xRegions,
StackType_t * pxBottomOfStack,
uint32_t ulStackDepth )
{
#if XCHAL_CP_NUM > 0
xMPUSettings->coproc_area = ( StackType_t * ) ( ( uint32_t ) ( pxBottomOfStack + ulStackDepth - 1 ));
xMPUSettings->coproc_area = ( StackType_t * ) ( ( ( portPOINTER_SIZE_TYPE ) xMPUSettings->coproc_area ) & ( ~( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK ) ) );
xMPUSettings->coproc_area = ( StackType_t * ) ( ( ( uint32_t ) xMPUSettings->coproc_area - XT_CP_SIZE ) & ~0xf );
void vPortStoreTaskMPUSettings( xMPU_SETTINGS * xMPUSettings,
const struct xMEMORY_REGION * const xRegions,
StackType_t * pxBottomOfStack,
uint32_t ulStackDepth )
{
#if XCHAL_CP_NUM > 0
xMPUSettings->coproc_area = ( StackType_t * ) ( ( uint32_t ) ( pxBottomOfStack + ulStackDepth - 1 ) );
xMPUSettings->coproc_area = ( StackType_t * ) ( ( ( portPOINTER_SIZE_TYPE ) xMPUSettings->coproc_area ) & ( ~( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK ) ) );
xMPUSettings->coproc_area = ( StackType_t * ) ( ( ( uint32_t ) xMPUSettings->coproc_area - XT_CP_SIZE ) & ~0xf );
/* NOTE: we cannot initialize the coprocessor save area here because FreeRTOS is going to
* clear the stack area after we return. This is done in pxPortInitialiseStack().
*/
#endif
}
/* NOTE: we cannot initialize the coprocessor save area here because FreeRTOS is going to
* clear the stack area after we return. This is done in pxPortInitialiseStack().
*/
#endif
}
#endif /* if portUSING_MPU_WRAPPERS */