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Make Cortex-M0 set/clear interrupt flag from ISR functions nestable.
Don't reset the stack location when starting the scheduler in Cortex-M0 ports as the vector offset register is not implemented and XMC1000 devices have their application vector address somewhere other than 0x00.
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9 changed files with 146 additions and 102 deletions
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@ -118,12 +118,13 @@ extern void vPortYield( void );
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/* Critical section management. */
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extern void vPortEnterCritical( void );
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extern void vPortExitCritical( void );
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#define portSET_INTERRUPT_MASK() __asm volatile ( " cpsid i " )
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#define portCLEAR_INTERRUPT_MASK() __asm volatile ( " cpsie i " )
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#define portSET_INTERRUPT_MASK_FROM_ISR() 0;portSET_INTERRUPT_MASK()
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#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) portCLEAR_INTERRUPT_MASK();(void)x
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#define portDISABLE_INTERRUPTS() portSET_INTERRUPT_MASK()
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#define portENABLE_INTERRUPTS() portCLEAR_INTERRUPT_MASK()
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extern unsigned long ulSetInterruptMaskFromISR( void ) __attribute__((naked));
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extern void vClearInterruptMaskFromISR( unsigned long ulMask ) __attribute__((naked));
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#define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMaskFromISR()
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#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vClearInterruptMaskFromISR( x )
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#define portDISABLE_INTERRUPTS() __asm volatile ( " cpsid i " )
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#define portENABLE_INTERRUPTS() __asm volatile ( " cpsie i " )
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#define portENTER_CRITICAL() vPortEnterCritical()
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#define portEXIT_CRITICAL() vPortExitCritical()
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