程序跑飞 Program running out to 0x14(reserved handler)

CPU: Renesas RZ/T1 R7S910018 (ARMv7-R Cortex-R4 600MHz)

Board: RSK+RZT1

Probe: I-jet

IDE: IAR EWARM 7.4

Hi all,

  I've met a problem puzzles me. When I press "Go" to run on full speed, the program runs out to the address 0x14(reserved handler).

  The program had been running well until I implemented a MTU3 TGIA3 interrupt (multi-function timer unit) routine to the program, working together with other three SPI interrupts(SPI transmit/error/idle interrupts) used to interface the LCD.

  Before I implemted the TGIA3 interrupt, the program with SPI interrupts went well. So it seems the interrupts interacting cause the problem. All the interrupts disable the nesting function(nested interrupt is disabled). I use the VIC (vector interrupt controller) to provide the ISR entrance

address.

  I used the ETM to trace the program and found that returning from the TGIA3 interrupt causes the PC to change to 0x14. But when I put a breakpoint at the interrupt exit point and the PC won't goes to 0x14 but goes back to the point before interrupted.

  Here are the screenshots.

http://renesasrulz.com/cfs-file.ashx/__key/communityserver-discussions-components-files/27/c1.PNG

Here are the ETM trace shots before it stops at 0x14.

  I've trapped here for almost a week and greatly hope to obtain help. Thank you all very much!