In OpenWrt we have a build error in the openssl sha256 code on MIPS I. /usr/bin/perl asm/sha1-mips.pl o32 sha1-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 sha1-mips.o sha1-mips.S /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 make[5]: Leaving directory `/builds/openwrt/slave/cobalt/build/build_dir/target-mipsel_uClibc-0.9.33.2/openssl-1.0.1e/crypto/sha' make[4]: *** [subdirs] Error 1 make[4]: Leaving directory `/builds/openwrt/slave/cobalt/build/build_dir/target-mipsel_uClibc-0.9.33.2/openssl-1.0.1e/crypto' make[3]: *** [build_crypto] Error 1 make[3]: Leaving directory `/builds/openwrt/slave/cobalt/build/build_dir/target-mipsel_uClibc-0.9.33.2/openssl-1.0.1e' make[2]: *** [/builds/openwrt/slave/cobalt/build/build_dir/target-mipsel_uClibc-0.9.33.2/openssl-1.0.1e/.built] Error 2 make[2]: Leaving directory `/builds/openwrt/slave/cobalt/build/package/libs/openssl'
The full log is here: http://buildbot.openwrt.org:8010/broken_packages/cobalt/openssl/compile.txt The MIPS documentation says: Software is strongly encouraged to avoid the use of the Branch Likely instructions, as they will be removed from a future revision of the MIPS Architecture. Some implementations always predict the branch will be taken, so there is a significant penalty if the branch is not taken. Software should only use this instruction when there is a very high probability (98% or more) that the branch will be taken. If the branch is not likely to be taken or if the probability of a taken branch is unknown, software is encouraged to use the BNE instruction instead. Historical Information: In the MIPS I architecture, this instruction signaled a Reserved Instruction Exception. http://personal.denison.edu/~bressoud/cs281-s10/Supplements/ISA_Vol_2.pdf I am not a MIPS ASM expert, but I would suggest to use BNE here instead. Hauke ______________________________________________________________________ OpenSSL Project http://www.openssl.org Development Mailing List openssl-dev@openssl.org Automated List Manager majord...@openssl.org
