align in MSCOFF

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Defsanguje

Joined: 07 Aug 2006
Posts: 7
Location: Finland

Defsanguje 03 Oct 2009, 18:12

I'm not sure is it a bug or what, but instruction "align 16" gives error: Section is not aligned enough. Changing the instruction to "align 4" works well though.

Code:

format MS COFF

include 'win32ax.inc'

section '.text' code readable writeable executable

align 16
proc WriteESI
@@:             lodsb
                stosb
                test al, al
                jnz @b
                dec edi
.Exit:          retn
endp

03 Oct 2009, 18:12

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8367
Location: Kraków, Poland

Tomasz Grysztar 03 Oct 2009, 19:23

You have to align the whole section first, if you want to have alignment of such size enabled inside it. Default alignment for section is 4, and you change it like:

Code:

section '.text' code readable writeable executable align 16

03 Oct 2009, 19:23

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