We were building the NASM flavor with MASM which is why it didn't work. Get the MASM output working: cpuid and cmove are not available in MASM unless the file declares .686. Also work around MASM rejecting a very long line in SHA-256. The follow-up change will get the NASM flavor working. We should probably use that one as it's documented as supported upstream. But let's make this one functional too. Change-Id: Ica69cc042a7250c7bc9ba9325caab597cd4ce616 Reviewed-on: https://boringssl-review.googlesource.com/2091 Reviewed-by: Adam Langley <agl@google.com>kris/onging/CECPQ3_patch15