diff options
| -rw-r--r-- | Demo/Common/drivers/Atmel/at91lib/boards/at91sam9xe-ek/board_cstartup_iar.s | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/Demo/Common/drivers/Atmel/at91lib/boards/at91sam9xe-ek/board_cstartup_iar.s b/Demo/Common/drivers/Atmel/at91lib/boards/at91sam9xe-ek/board_cstartup_iar.s index d617c15e..fabc1d19 100644 --- a/Demo/Common/drivers/Atmel/at91lib/boards/at91sam9xe-ek/board_cstartup_iar.s +++ b/Demo/Common/drivers/Atmel/at91lib/boards/at91sam9xe-ek/board_cstartup_iar.s @@ -127,37 +127,6 @@ irqHandler: portRESTORE_CONTEXT
- /* Won't progress to here. */
-
- /* Save interrupt context on the stack to allow nesting */
- SUB lr, lr, #4
- STMFD sp!, {lr}
- MRS lr, SPSR
- STMFD sp!, {r0, lr}
-
- /* Write in the IVR to support Protect Mode */
- LDR lr, =AT91C_BASE_AIC
- LDR r0, [r14, #AIC_IVR]
- STR lr, [r14, #AIC_IVR]
-
- /* Branch to interrupt handler in Supervisor mode */
- MSR CPSR_c, #ARM_MODE_SVC
- STMFD sp!, {r1-r3, r12, lr}
- MOV lr, pc
- BX r0
- LDMIA sp!, {r1-r3, r12, lr}
- MSR CPSR_c, #ARM_MODE_IRQ | I_BIT
-
- /* Acknowledge interrupt */
- LDR lr, =AT91C_BASE_AIC
- STR lr, [r14, #AIC_EOICR]
-
- /* Restore interrupt context and branch back to calling code */
- LDMIA sp!, {r0, lr}
- MSR SPSR_cxsf, lr
- LDMIA sp!, {pc}^
-
-
/*
After a reset, execution starts here, the mode is ARM, supervisor
with interrupts disabled.
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