On 22 Nov 2010, at 21:58, Den Jean wrote:
http://bugs.freepascal.org/view.php?id=17384
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40838
can a C-ABI expert enlight us on this ABI mess.
Does this also effect calling in general of C-functions from Free
Pascal.
Afaik, the Linux/i386 abi only mandates 4 byte stack alignment. That
means that any function requiring a higher stack alignment has to
realign the stack. That's what the new -mstackrealign gcc option does.
FPC also only guarantees 4 byte stack alignment under Linux/i386. It
does not have the equivalent of an -mstackrealign option, though it
probably will have to be added one day to fix http://bugs.freepascal.org/view.php?id=15582
(which is basically the same issue for which that option was added
to gcc).
Jonas
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