Nxp Semiconductors UM10237 User Manual

UM10237_2

© NXP B.V. 2008. All rights reserved.

 

While the processor is in a privileged mode, and IRQs are disabled, user must include a 
line of code within the start-up sequence of application to call rm_init_entry().

The following example shows how to setup stack, VIC, initialize RealMonitor and share 
non vectored interrupts:

IMPORT rm_init_entry

IMPORT rm_prefetchabort_handler

IMPORT rm_dataabort_handler

IMPORT rm_irqhandler2

IMPORT rm_undef_handler

IMPORT User_Entry ;Entry point of user application.

CODE32

ENTRY

;Define exception table. Instruct linker to place code at address 0x0000 0000

AREA exception_table, CODE

LDR pc, Reset_Address

LDR pc, Undefined_Address

LDR pc, SWI_Address

LDR pc, Prefetch_Address

LDR pc, Abort_Address

RM_UNDEF_HANDLER()
RM_PREFETCHABORT_HANDLER()
RM_DATAABORT_HANDLER()
RM_IRQHANDLER()

RESET

FIQ

IRQ

RESERVED

DATA ABORT

PREFETCH

ABORT

SWI

UNDEF

RealMonitor supplied exception vector handlers

sharing IRQs between RealMonitor and user IRQ handler

OR

APP_IRQDISPATCH

RM_IRQHANDLER2()

APP_IRQHANDLER2()