[ECOS] arm7 lpc2xxx abort data exception

[Sergei Gavrikov]

On Thu, Jan 24, 2008 at 03:38:14PM -0800, Jean-David Vuillemain wrote:
> hi,
> 
> i have been working with ecos for a couple of months now. I had no
> problem at all with a 8 months old repository source files and my own
> port for my target board. After some problem with my working
> environment  and updating the ecos source files, i can't have my old
> work and my new  code running on the board.

Working with lpc2xxx targets I update eCos repository every week.  Did
you try to build eCos with a tracing support? Import 2 lines the below
with ecosconfig and rebuild eCos

cdl_option CYGPKG_INFRA_DEBUG {user_value 1};
cdl_option CYGDBG_USE_TRACING {user_value 1};

Can you run your application in GDB as

b cyg_start
b cyg_assert_fail
c
c

I wonder, Did you get same assertion?

ASSERT FAIL: <1>lpc2xxx_misc.c[359]hal_interrupt_configure() Invalid vector


Sergei

> It seems that my code always go through the same steps and finishes by
>  an exception abort data.
> 
> Here is the code where it fails:
> 0x80020070 <start>:    ldr r0, [pc, #1020]    ; 0x80020474 <.init_flag>
> 0x80020074 <start+4>:  ldr r1, [r0]
> 0x80020078 <start+8>:  cmp r1, #0    ; 0x0
> 0x8002007c <start+12>: bne 0x80020078 <start+8>
> 0x80020080 <start+16>: ldr r1, [pc, #196]    ; 0x8002014c <init_done>
> 0x80020084 <start+20>: str r1, [r0]
> 0x80020088 <start+24>: mov r0, #0    ; 0x0
> 0x8002008c <start+28>: ldr r1, [pc, #988]    ; 0x80020470
> <.__exception_handlers>
> 0x80020090 <start+32>: cmp r7, #19    ; 0x13
> 0x80020094 <start+36>: beq 0x800200a0 <start+48>
> 0x80020098 <start+40>: ldr r2, [r1, #40]
> 0x8002009c <start+44>: str r2, [r0, #40]
> 0x800200a0 <start+48>: ldr r2, [r1, #24]
> 0x800200a4 <start+52>: str r2, [r0, #24]    <-- this line fails on my
> old and new programs
> It ends up in an abort data:
> 0x00000010 swp             r1, r3, [r2]
> 
> Someone has a hint to solve this problem??
> 
> Thanks in advance.
> 
> Jean-David
> 
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