Lpc2000

Hi,

I am debugging an LPC2106 using arm-elf-insight with a WIGGLER and 
cannot get the software interrupt to work correctly.

I am running from RAM and can successfully step through the code, but 
have a problem with the SWI instruction.

I have setup the vector table at 0x40000000 as follows:

(gdb) disassemble 0x40000000 0x40000020
Dump of assembler code from 0x40000000 to 0x40000020:
0x40000000 <$a+0>: b 0x40002438 <start>
0x40000004 <$a+4>: b 0x400024a0 <endless_loop>
0x40000008 <$a+8>: b 0x40001480 <SWI_Handler>
0x4000000c <$a+12>:b 0x400024a0 <endless_loop>
0x40000010 <$a+16>:b 0x400024a0 <endless_loop>
0x40000014 <$a+20>:b 0x400024a0 <endless_loop>
0x40000018 <$a+24>:b 0x400024a0 <endless_loop>
0x4000001c <$a+28>:b 0x400024a0 <endless_loop>

I have also set the MEMMAP register to 2, which I think should remap 
the vector table from flash to RAM.


The vector table in flash is as follows - I have not set this up it's 
just what was there:

(gdb) disassemble 0 0x20
Dump of assembler code from 0x0 to 0x20:
0x00000000:	ldr	pc, [pc, #24]	; 0x20
0x00000004:	ldr	pc, [pc, #24]	; 0x24
0x00000008:	ldr	pc, [pc, #24]	; 0x28
0x0000000c:	ldr	pc, [pc, #24]	; 0x2c
0x00000010:	ldr	pc, [pc, #24]	; 0x30
0x00000014:	nop			(mov r0,r0)
0x00000018:	ldr	pc, [pc, #24]	; 0x38
0x0000001c:	ldr	pc, [pc, #24]	; 0x3c
End of assembler dump.

When the SWI instruction executes I can see the PC getting set to 8.  
My understanding is that with the MEMMAP instruction set to 2, the 
program should actually read from 0x40000008, but stepping through 
the next instruction shows that the vector table in flash is actually 
being used.

Any help on this matter gratefully appreciated.  What am I doing 
wrong?

Regards,
Richard.