Date: Mon, 14 Jun 2010 00:05:44 +0200 From: Bernd Walter <ticso@cicely7.cicely.de> To: Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= <des@des.no> Cc: ticso@cicely.de, current@freebsd.org Subject: Re: Cleanup for cryptographic algorithms vs. compiler optimizations Message-ID: <20100613220543.GH87112@cicely7.cicely.de> In-Reply-To: <86bpbe4nm8.fsf@ds4.des.no> References: <867hm5tl6u.fsf@ds4.des.no> <20100612153526.GA3632@acme.spoerlein.net> <20100612163208.GS87112@cicely7.cicely.de> <864oh86tnl.fsf@ds4.des.no> <20100612225216.GT87112@cicely7.cicely.de> <86k4q33pk2.fsf@ds4.des.no> <20100613160035.GD87112@cicely7.cicely.de> <86fx0q52r0.fsf@ds4.des.no> <20100613162841.GE87112@cicely7.cicely.de> <86bpbe4nm8.fsf@ds4.des.no>
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On Sun, Jun 13, 2010 at 11:41:03PM +0200, Dag-Erling Smørgrav wrote: > Bernd Walter <ticso@cicely7.cicely.de> writes: > > Dag-Erling Smørgrav <des@des.no> writes: > > > The only way you can tell that gcc did it is if you break the rules, > > > such as by defining your own version of printf() or puts(). > > Our loader stages do this for good reasons. And in microcontroller > > programming (surely out of FreeBSD scope) it is done very regulary. > > Those are freestanding environments, where printf() and puts() don't > exist as far as the C standard is concerned. Most controller environments have some kind of libc. We even have devel/avr-libc and devel/msp430-libc in ports. Anyway - printf=>puts isn't scarying as such, it is more that this might happen in other cases as well. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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