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From: | Eli Zaretskii <eliz AT is DOT elta DOT co DOT il> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: 8 bytes alignment |
Date: | Fri, 10 Mar 2000 08:09:29 +0200 |
Organization: | NetVision Israel |
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Message-ID: | <38C89199.2A4D29CF@is.elta.co.il> |
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To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Pavel Semjanov wrote: > > > Hmm? Doesn't -malign-double and -mpreferred-stack-boundary work for you? > > Then I use -malign-double the warning below disappears, but data still > is not aligned. Double variables are surely aligned on 8-byte boundaries. So you should be able to trick the compiler by declaring your data double, and then casting it as appropriate. > -mpreferred... doesn't help because the data I use is > global, not local. It shouldn't be hard to copy it to a local variable when you use it. > The only way I found is compile to asm, next I change .comm directives > to .global and .space ones, and insert .p2align 8 before. .p2align 8 is not 8 byte-alignment, it's 256-byte alignment. Use either .p2align 3 or .balign 8.
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