c0e7cef715
The new options are: +aes: Enables the AES instructions of Armv8-a, enabled by default with +crypto. +sha2: Enables the SHA1 and SHA2 instructions of Armv8-a, enabled by default with +crypto. These options have been turned on by default when +crypto is used, as such no breakage is expected. The reason for the split is because with the introduction of Armv8.4-a the implementation of AES has explicitly been made independent of the implementation of the other crypto extensions. Backporting the split does not break any of the previous requirements and so is safe to do. gas * config/tc-aarch64.c (aarch64_features): Include AES and SHA2 in CRYPTO. Add SHA2 and AES. include * opcode/aarch64.h: (AARCH64_FEATURE_SHA2, AARCH64_FEATURE_AES): New. opcodes * aarch64-tbl.h (aarch64_feature_crypto): Add AES and SHA2. (aarch64_feature_sha2, aarch64_feature_aes): New. (SHA2, AES): New. (AES_INSN, SHA2_INSN): New. (pmull, pmull2, aese, aesd, aesmc, aesimc): Change to AES_INS. (sha1h, sha1su1, sha256su0, sha1c, sha1p, sha1m, sha1su0, sha256h, sha256h2, sha256su1): Change to SHA2_INS.