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Update the GCC Cortex-A9 port to introduce a version of the IRQ handler that saves the FPU registers.

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This commit is contained in:
Richard Barry 2016-04-23 10:53:57 +00:00
parent ac67c39be9
commit 345819d550
5 changed files with 78 additions and 5 deletions
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11
FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo/src/FreeRTOS_tick_config.c
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@ -147,7 +147,14 @@ void vClearTickInterrupt( void )
}
/*-----------------------------------------------------------*/
void vApplicationIRQHandler( uint32_t ulICCIAR )
/* This is the callback function which is called by the FreeRTOS Cortex-A port
layer in response to an interrupt. If the function is called
vApplicationFPUSafeIRQHandler() then it is called after the floating point
registers have been saved. If the function is called vApplicationIRQHandler()
then it will be called without first having saved the FPU registers. See
http://www.freertos.org/Using-FreeRTOS-on-Cortex-A-Embedded-Processors.html for
more information */
void vApplicationFPUSafeIRQHandler( uint32_t ulICCIAR )
{
extern const XScuGic_Config XScuGic_ConfigTable[];
static const XScuGic_VectorTableEntry *pxVectorTable = XScuGic_ConfigTable[ XPAR_SCUGIC_SINGLE_DEVICE_ID ].HandlerTable;
@ -155,7 +162,7 @@ uint32_t ulInterruptID;
const XScuGic_VectorTableEntry *pxVectorEntry;
/* Re-enable interrupts. */
__asm ( "cpsie i" );
__asm ( "cpsie i" );
/* The ID of the interrupt is obtained by bitwise anding the ICCIAR value
with 0x3FF. */