[fpc-pascal] FPC_ARMEL system calls

[Nataraj S Narayan]

Hi Henry, Luca

I got a 'ppcarm' after compiling the fpc-svn. I copied the pparm to the
qemu-system-arm emulated machine and tried to compile a Helloworld.pas.
fpc showed some errors related to FPU and stopped. Then i copied many *.o
and *.ppu files from host to qemu machine. This time fpc compiled and linked
the crt0.o and system.o and few other file, and the program worked.

But when i copied to the actual target AT91SAM9263 , it wont work - just
 waits endlessly.

strace in the target gives:-

syscall(0x90004c,0x3,0xbebd6de8,0xbebd6df0,0x40000) = -1 EINTR (Interrupted
system call)

And finally a bad file descriptor. Exit(0).

The architecture is  "armvtejl" in both target as well as the emulated
machine.

I tried generating assembler files in emulated and the assembling in the
target. But getting same.

What could be done now?

regards

Nataraj


On Wed, Jun 4, 2008 at 3:33 AM, Henry Vermaak <henry.vermaak at gmail.com>
wrote:

> 2008/6/3 Luca Olivetti <luca at ventoso.org>
> >
> > the syscall number should be put in r7
> > Also the alignment of the parameters in the registers is different.
> > Of course I cannot make head or tails of syscall.inc, so it's possible
> that
> > everything is already done as it should be.
>
> mov r7, r0 puts the syscall nr into r7.  i haven't looked at the
> alignment, though :-\
>
> "With EABI, 64-bit function parameters passed in registers are aligned
> to an even-numbered register instead of using the next available
> pair."
>
> what output does:
>
> qemu-arm -strace hello
>
> give? (run on your i386 after cross-compiling)
>
> did you compile this with the 2.18 binutils?  my qemu-arm is happy
> with my simple hello program.  even does writeln(2/3) properly.
>
> henry
> _______________________________________________
> fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org
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>
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