Update IRQ handler code.

git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@589 1d2547de-c912-0410-9cb9-b8ca96c0e9e2

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 d617c15e272bd69692602d54a4fc62a990d8bb31..fabc1d1942baa62a1f00b40ddb945e19bd5b5215 100644 (file)
--- 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:
 \r
                portRESTORE_CONTEXT\r
 \r
-               /* Won't progress to here. */\r
-\r
-               /* Save interrupt context on the stack to allow nesting */\r
-        SUB     lr, lr, #4\r
-        STMFD   sp!, {lr}\r
-        MRS     lr, SPSR\r
-        STMFD   sp!, {r0, lr}\r
-\r
-        /* Write in the IVR to support Protect Mode */\r
-        LDR     lr, =AT91C_BASE_AIC\r
-        LDR     r0, [r14, #AIC_IVR]\r
-        STR     lr, [r14, #AIC_IVR]\r
-\r
-        /* Branch to interrupt handler in Supervisor mode */\r
-        MSR     CPSR_c, #ARM_MODE_SVC\r
-        STMFD   sp!, {r1-r3, r12, lr}\r
-        MOV     lr, pc\r
-        BX      r0\r
-        LDMIA   sp!, {r1-r3, r12, lr}\r
-        MSR     CPSR_c, #ARM_MODE_IRQ | I_BIT\r
-\r
-        /* Acknowledge interrupt */\r
-        LDR     lr, =AT91C_BASE_AIC\r
-        STR     lr, [r14, #AIC_EOICR]\r
-\r
-        /* Restore interrupt context and branch back to calling code */\r
-        LDMIA   sp!, {r0, lr}\r
-        MSR     SPSR_cxsf, lr\r
-        LDMIA   sp!, {pc}^\r
-\r
-\r
 /*\r
    After a reset, execution starts here, the mode is ARM, supervisor\r
    with interrupts disabled.\r