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Date: Sat, 10 Nov 2001 11:10:00 -0000
From: Cristiano Ligieri Pereira <cpereira@ics.uci.edu>
To: Ben Elliston <bje@redhat.com>
cc: sid@sources.redhat.com
Subject: Re: Running the hello.c example
In-Reply-To: <15352.16731.174898.123650@scooby.brisbane.redhat.com>
Message-ID: <Pine.SOL.4.20.0111181535080.10238-100000@washoe.ics.uci.edu>
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Hi Ben,

That's the trace I got:

0xd2a8: BL
0x876c: MOV_REG_IMM_SHIFT
0x8770: STMDB_WB
0x8774: SUB_IMM
0x8778: MOV_REG_IMM_SHIFT
0x877c: BL
0x8758: MOV_REG_IMM_SHIFT
0x875c: STMDB_WB
0x8760: SUB_IMM
0x8764: SWI     Fault (software, 0x69) pc=0x8764

and this is the piece of the original code where the error is happening:

00008758 <_swiwrite>:
    8758:       e1a0c00d        mov     ip, sp
    875c:       e92dd800        stmdb   sp!, {fp, ip, lr, pc}
    8760:       e24cb004        sub     fp, ip, #4      ; 0x4
    8764:       ef000069        swi     0x00000069
    8768:       e91ba800        ldmdb   fp, {fp, sp, pc}

SWI is software interrupt, right? Looks like I'm trying to execution
function 0x69 that doesn't exist? is this right? 

Why would this happen? This is such a simple example. And one more
question..., which configuration is being used (besides ARM processor)
once I haven't specified any configuration file, let alone created some
configuration.

thanks,
Cristiano.

------------------------------------------------------------
Cristiano Ligieri Pereira - http://www.ics.uci.edu/~cpereira

On Mon, 19 Nov 2001, Ben Elliston wrote:

> >>>>> "Cristiano" == Cristiano Ligieri Pereira <cpereira@ics.uci.edu> writes:
> 
>   Cristiano> When I start arm-elf-sid, though, I get the following error:
> 
>   Cristiano> % arm-elf-sid hello.x
>   Cristiano> Fault (software, 0x69) pc=0x8764
> 
> You might want to use arm-elf-sid --trace-semantics hello.x.  Armed
> (no pun intended) with a disassembly of your program, you should be
> able to see what's going on.
> 
> Ben
>