[fpc-pascal] fpc 2.6.0-rc1 for arm-embedded

[Koenraad Lelong]

On 12-12-11 09:53, Koenraad Lelong wrote:
> On 09-12-11 00:09, Den Jean wrote:
>> On Thursday 08 December 2011 13:49:16 Koenraad Lelong wrote:
>>
>> > /usr/lib/fpc/2.6.0/units/arm-embedded/rtl/system.o does not support
>>
>> > interworking, whereas test-1.elf does
>>
>> does this thread help ?
>>
>> http://lists.freepascal.org/lists/fpc-devel/2011-August/025615.html
>>
> Hi,
>
> Thanks,
>
> I tried the commands of John Clymer after downloading and installing
> Codesourcery. The compiler and my test-application compiled fine. I
> flashed my device but there I don't see anything.
> At the moment I can't debug with JTAG, so I'll have to fix that first
> before I can say more.
>
> Regards,
>
> Koenraad Lelong.

Hi,

I got SWD running so I can debug.
Unfortunately, I still can't go on.
When I start the program with the remote gdb I get an error :

(gdb) target extend localhost:4242
Remote debugging using localhost:4242
0x0800085c in ?? ()
(gdb) x/20i 0x800085c
=> 0x800085c:   ldr     r1, [pc, #60]   ; 0x80008a0
    0x8000860:   ldr     r2, [pc, #60]   ; 0x80008a4
    0x8000864:   ldr     r3, [pc, #60]   ; 0x80008a8
    0x8000868:   cmp     r2, r3
    0x800086c:   ldrls   r0, [r1], #4
    0x8000870:   strls   r0, [r2], #4
    0x8000874:   bls     0x8000868
    0x8000878:   ldr     r1, [pc, #24]   ; 0x8000898
    0x800087c:   ldr     r2, [pc, #24]   ; 0x800089c
    0x8000880:   mov     r0, #0
    0x8000884:   cmp     r1, r2
    0x8000888:   strls   r0, [r1], #4
    0x800088c:   bls     0x8000884
    0x8000890:   b       0x8001870
    0x8000894:   b       0x8000854
    0x8000898:   andcs   r0, r0, r12, rrx
    0x800089c:   strhcs  r0, [r0], -r4
    0x80008a0:   stmdaeq r0, {r3, r4, r5, r6, r11, r12}
    0x80008a4:   andcs   r0, r0, r0
    0x80008a8:   andcs   r0, r0, r12, rrx
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program:
Cannot access memory at address 0x2000ff98
0x0800085c in ?? ()

The first lines are the disassembly of the code, which is the same as my 
disassembled elf-file.
Then the run stops with an error-message about the memory-access. The 
message is right, the chip only has 8K of RAM. I was looking if the 
stackpointer is maybe mis-configured, but I can't find where this happens.
I don't know what the last line means, is that the procedure where the 
error happened ?

Any suggestions ?

Thanks in advance,

Koenraad Lelong.