On 10/13/2013 12:14 AM, Andy Polyakov wrote: >> In OpenWrt we have a build error in the openssl sha256 code on MIPS I. > > For reference, I've never tested MIPS modules on pre-III, and therefore > feedback for earlier generations is appreciated. It was tested to > compile for MIPS II though, for IRIX account. > >> /usr/bin/perl asm/sha512-mips.pl o32 sha256-mips.S >> mipsel-openwrt-linux-uclibc-gcc -O2 -pipe -mtune=r5000 -fno-caller-saves >> -fhonour-copts -Wno-error=unused-but-set-variable -msoft-float -fpic -c >> -c -o sha256-mips.o sha256-mips.S >> sha256-mips.S: Assembler messages: >> sha256-mips.S:1960: Error: opcode not supported on this processor: mips1 >> (mips1) `bnel $5,$23,.Loop' >> make[5]: *** [sha256-mips.o] Error 1 > > Well, if you -mtune=r5000 you probably are not actually targeting MIPS > I, and could therefore specify even -mips3 on compiler command line. > But, yes, as you point out it's appears to be declared obsolete in the > latest specification, so that switching to bne is appropriate. But just > replacing it with bne is not necessarily appropriate because instruction > is delay slot to b*l is executed conditionally. Also note that there are > more b*l instructions, in crypto/bn/asm. I'll see what is appropriate to > do, meanwhile specify at least -mips2 on command line. > > On side note, last update to MIPS modules (in 1.0.2 and forward) added > support for latest MIPS[32|64]R2 and SmartMIPS extensions. If you happen > to have such CPUs, it would pay off to specify matching command-line > option(s).
I do not have this hardware, I just saw that some automatic builds are failing and wanted to inform the author of that code, the build was done by cross compiling. The Mips devices I have here are all MIPS32 R1 and R2. Doing some buildtests with these compiler optimizations that are causing problems here is no problem for me. Hauke ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List openssl-dev@openssl.org Automated List Manager majord...@openssl.org
