Re: Recent serial port lossage

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Article #6283

#6283

From: Torbjorn Granlund
Date: Sun, 07 Jan 1996 00:00

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This is not a bug in GCC.

You need to refresh your understanding of what `volatile' means.  In
particular, it doesn't mean that statements that both read and write a
memory position are executed with the bus locked.

Also not that x86 processors will *not* perform statements like,

	orl $0x80000000,_foo

with the bus locked between the read and the write.  For that, you need to
prefix the `orl' with a `lock' instruction.

Torbjorn

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Message-ID: <199601072253.XAA14549@insanus.matematik.su.se>

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From: tege@matematik.su.se (Torbjorn Granlund)
Subject: Re: Recent serial port lossage
Date: 1996/01/07
Message-ID: <199601072253.XAA14549@insanus.matematik.su.se>
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