[fpc-devel] Stack alignment on i386
henry.vermaak at gmail.com
Mon Dec 19 13:14:53 CET 2011
On 18/12/11 12:37, Den Jean wrote:
> to interface with c libraries containing SSE code,
> the stack must be aligned to 16 bytes.
> Currently the default -mpreferred-stack-boundary=num of gcc provides for this.
> However current fpc 2.4.4 does not align the stack as such.
> I do not know if this correct or not when reading things like:
Ow, we hit this problem. We are calling a library that uses opencv
(where SSE instructions are used). Luckily we can add -mstackrealign to
the CFLAGS of our library. People without an "interface" lib will be in
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