NXP Semiconductors LPC24XX UM10237 - Manual (Page 756)

UM10237_4 © NXP B.V. 2009. All rights reserved.
User manual Rev. 04 — 26 August 2009 756 of 792
NXP Semiconductors
UM10237
Chapter 35: LPC24XX RealMonitor
;is not aware of the VIC interrupt priority hardware so trick
;rm_irqhandler2 to return here
STMFD sp!, {ip,pc}
LDR pc, rm_irqhandler2
;rm_irqhandler2 returns here
MSR cpsr_c, #0x52 ;Disable irq, move to IRQ mode
MSR spsr, r12 ;Restore SPSR from r12
STMFD sp!, {r0}
LDR r0, =VICBaseAddr
STR r1, [r0,#VICVectAddrOffset] ;Acknowledge Non Vectored irq has finished
LDMFD sp!, {r12,r14,r0} ;Restore registers
SUBS pc, r14, #4 ;Return to the interrupted instruction
END
5. RealMonitor build options
RealMonitor was built with the following options:
RM_OPT_DATALOGGING=FALSE
This option enables or disables support for any target-to-host packets sent on a non
RealMonitor (third-party) channel.
RM_OPT_STOPSTART=TRUE
This option enables or disables support for all stop and start debugging features.
RM_OPT_SOFTBREAKPOINT=TRUE
This option enables or disables support for software breakpoints.
RM_OPT_HARDBREAKPOINT=TRUE
Enabled for cores with EmbeddedICE-RT. This device uses ARM-7TDMI-S Rev 4 with
EmbeddedICE-RT.
RM_OPT_HARDWATCHPOINT=TRUE
Enabled for cores with EmbeddedICE-RT. This device uses ARM-7TDMI-S Rev 4 with
EmbeddedICE-RT.
RM_OPT_SEMIHOSTING=FALSE
This option enables or disables support for SWI semi-hosting. Semi-hosting provides
code running on an ARM target use of facilities on a host computer that is running an
ARM debugger. Examples of such facilities include the keyboard input, screen output,
and disk I/O.
RM_OPT_SAVE_FIQ_REGISTERS=TRUE
This option determines whether the FIQ-mode registers are saved into the registers
block when RealMonitor stops.