Hi,

Trying to using Fasm to create a dll with some SSE code for video processing, I cannot get align 16 to work with the following format

format PE GUI 4.0 DLL

I used the example of a dll in the fasm code for this, "align 8" is fine, is switch format to

format MS64 coff

then "align 16" is fine

not sure why this would be the case, any pointers?

datkins,

You definitely should provide some extra data. Source?

Hi,

was trying to align the section to paragraph with this

section 'DATA' data readable writeable align 16

seems the align cannot be done for the section, taken that out and then this works fine,

section 'DATA' data readable writeable
ssetest1: dp 12

align 16
sseTestValue: dp 0h, 0h

had hoped "dp" would allow a pargaoh size constant but realised now its a pointer, never mind back to dq

think I'm heading in the right way at last!

I may be wrong, but I think sections are already aligned by some value, like 512.

you might be right, our other linker has a size for this but fasm is new to me so I was not sure.

There is more than one alignment. File (the on disk format) alignment is usually 512, and image (the in-memory format) alignment is usually 4096. Native DLLs have different rules and, IIRC, align by default to 32.