From: Martin <asmfreshmeat@gmx.de>
To: linux-assembly@vger.kernel.org
Subject: GAS/GCC Assembler Code Modification
Date: Sat, 15 May 2004 11:28:07 +0200 [thread overview]
Message-ID: <20040515112807.579e4d89@deepblack> (raw)
Hi folks,
I have a question regarding GAS and GCC.
Does the GAS modify the Assembler Code? If I try to assemble (for example) the following line:
popl %esi
the gas changes that to
pop %esi
Ok I guess this is ok, because the ESI Register is 'only' 32 Bit. So movw (= mov) would be ok.
Next example:
If I try to assemble
movl $0xb,%eax
the gas changes that to
mov $0xb,%eax
How can I tell gas that I dont want him to optimize the code?
Best regards,
Martin
PS: Sry for my poor english.
next reply other threads:[~2004-05-15 9:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-15 9:28 Martin [this message]
2004-05-15 10:15 ` GAS/GCC Assembler Code Modification sandeep
2004-05-15 13:32 ` peter willy krause
2004-05-15 20:08 ` Martin
2004-05-15 21:45 ` peter willy krause
2004-05-15 21:01 ` Martin
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