Path: utzoo!attcan!uunet!munnari!otc!metro!ditsyda!evans
From: evans@ditsyda.oz (Bruce Evans)
Newsgroups: comp.os.minix
Subject: Asld alignment doesn't work
Message-ID: <1741@ditsyda.oz>
Date: 4 Feb 89 08:53:24 GMT
Organization: CSIRO DIT Sydney, Australia
Lines: 27

1) The ".even" pseudo-op does nothing.

2) Worse, the ".align 2" pseudo-op aligns the symbol offsets but does not
cause the necessary padding. This happens for both the text and data segments.

Example:
---
| misalign.s - compile with cc -i -s misalign.s, and inspect with nm and dis88

	.text
	.align	2		| attempt to ensure offset is even to start

	.byte	0x90
	.align			| should add 1 byte padding but doesn't
_main:				| even, OK but mismatched
	ret			| never executed
	ret			| true entry point

	.data
	.align	2		| attempt to ensure offset is even to start

	.byte	0x12
	.even			| should add 1 byte padding but doesn't
_junk:				| odd, should be even (consistent at least)
	.word	0x3456
---
Bruce Evans		evans@ditsyda.oz.au
D