[fpc-pascal] ARM Linux crosscompiler: compiles but... executable gives segmentation fault

[Michael Ring]

I guess not, when I remember correctly this has already been repaired 
for armv6m. The problem for me is that .Lj9 is defined as a negative 
number. As a consequence r13 points to nirvana and

str     r0,[r13, #8] creates an Exception.


# [87] begin
         push    {r4,r14}
         ldr     r4,.Lj9
         add     r13,r13,r4
# Var bit located at r13+0
# Var direction located at r13+4
# Var $self located at r13+8
         str     r0,[r13, #8]
         strb    r1,[r13]
         str     r2,[r13, #4]
.Ll2:

.....

.Lj9:
         .long   -32840
.Lj7:
         .long   32768
.Lj10:
         .long   32840
.Lt2:

Am 13.01.14 15:15, schrieb Jeppe Græsdal Johansen:
> Might be related to the mla/mls optimization which somehow has been 
> enabled even though it's still broken
>
> ----- Reply message -----
> Fra: "Reinier Olislagers" <reinierolislagers at gmail.com>
> Dato: man., jan. 13, 2014 13:44
> Emne: [fpc-pascal] ARM Linux crosscompiler: compiles but... executable 
> gives segmentation fault
> Til: <fpc-pascal at lists.freepascal.org>
>
> On 13/01/2014 12:34, Michael Ring wrote:
> > I had a look at armv6m yesterday evening, parts of my code run fine in
> > gdb, the code crashes in the init of a procedure when trying to prepare
> > the access to contents of a set.
> > The address of the set seems to get calculated totally wrong ending up
> > in a memory access at the end of the chip's address range.
> > Not sure if this is related to your problem, I will try to boil down the
> > example to a bare minimum to see where the generated code differs
> > between armv7m and armv6m.
>
> Thanks a lot, Michael!
>
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