Re: gcc/as question

Andreas Schwab (schwab@suse.de)
16 Jul 1999 11:12:32 +0200


kanoj@google.engr.sgi.com (Kanoj Sarcar) writes:

|> What does it mean to say
|>
|> .section .mysection, "ax"
|>
|> specifically, what does the "ax" denote (allocate/executable??)

Yes.

|> Under gcc 2.7.2.3, mysection gets aligned to 4 bytes, whereas
|> on egcs-1.1.2-12, it gets aligned to 16 bytes on an ia32. My
|> code needs to know the alignment, so when I assumed 4 byte
|> alignment, my code compiled on gcc works, but not on egcs.

gcc 2.7.2.3 assumed a maximum alignment of 4 bytes and ignores all
attempts to specify a bigger alignment. egcs has fixed this bug. If your
code fails with egcs then you are making the wrong assumptions. A section
always inherits the maximum of all alignments of its containing objects.

-- 
Andreas Schwab                                  "And now for something
schwab@suse.de                                   completely different."
SuSE GmbH, Schanzäckerstr. 10, D-90443 Nürnberg

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