Split the AArch64 Crypto instructions for AES and SHA1+2 into their own options (+aes and +sha2).

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.

2 files changed, 39 insertions, 17 deletions

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 7dcc29e0edf..ffa56bbfcff 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,14 @@
+2017-11-08  Tamar Christina  <tamar.christina@arm.com>
+
+	* 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.
+
 2017-11-08  Jiong Wang  <jiong.wang@arm.com>
 	    Tamar Christina <tamar.christina@arm.com>
 
diff --git a/opcodes/aarch64-tbl.h b/opcodes/aarch64-tbl.h
index 61c2582d011..9d4f3a426ab 100644
--- a/opcodes/aarch64-tbl.h
+++ b/opcodes/aarch64-tbl.h
@@ -2005,7 +2005,8 @@ static const aarch64_feature_set aarch64_feature_fp =
 static const aarch64_feature_set aarch64_feature_simd =
   AARCH64_FEATURE (AARCH64_FEATURE_SIMD, 0);
 static const aarch64_feature_set aarch64_feature_crypto =
-  AARCH64_FEATURE (AARCH64_FEATURE_CRYPTO, 0);
+  AARCH64_FEATURE (AARCH64_FEATURE_CRYPTO | AARCH64_FEATURE_AES
+		   | AARCH64_FEATURE_SHA2, 0);
 static const aarch64_feature_set aarch64_feature_crc =
   AARCH64_FEATURE (AARCH64_FEATURE_CRC, 0);
 static const aarch64_feature_set aarch64_feature_lse =
@@ -2036,6 +2037,10 @@ static const aarch64_feature_set aarch64_feature_rcpc =
   AARCH64_FEATURE (AARCH64_FEATURE_RCPC, 0);
 static const aarch64_feature_set aarch64_feature_dotprod =
   AARCH64_FEATURE (AARCH64_FEATURE_V8_2 | AARCH64_FEATURE_DOTPROD, 0);
+static const aarch64_feature_set aarch64_feature_sha2 =
+  AARCH64_FEATURE (AARCH64_FEATURE_V8 | AARCH64_FEATURE_SHA2, 0);
+static const aarch64_feature_set aarch64_feature_aes =
+  AARCH64_FEATURE (AARCH64_FEATURE_V8 | AARCH64_FEATURE_AES, 0);
 
 #define CORE		&aarch64_feature_v8
 #define FP		&aarch64_feature_fp
@@ -2055,6 +2060,8 @@ static const aarch64_feature_set aarch64_feature_dotprod =
 #define FP_V8_3		&aarch64_feature_fp_v8_3
 #define COMPNUM		&aarch64_feature_compnum
 #define RCPC		&aarch64_feature_rcpc
+#define SHA2		&aarch64_feature_sha2
+#define AES		&aarch64_feature_aes
 #define DOTPROD		&aarch64_feature_dotprod
 
 #define CORE_INSN(NAME,OPCODE,MASK,CLASS,OP,OPS,QUALS,FLAGS) \
@@ -2088,6 +2095,10 @@ static const aarch64_feature_set aarch64_feature_dotprod =
   { NAME, OPCODE, MASK, CLASS, OP, COMPNUM, OPS, QUALS, FLAGS, 0, NULL }
 #define RCPC_INSN(NAME,OPCODE,MASK,CLASS,OPS,QUALS,FLAGS) \
   { NAME, OPCODE, MASK, CLASS, 0, RCPC, OPS, QUALS, FLAGS, 0, NULL }
+#define SHA2_INSN(NAME,OPCODE,MASK,CLASS,OPS,QUALS,FLAGS) \
+  { NAME, OPCODE, MASK, CLASS, 0, SHA2, OPS, QUALS, FLAGS, 0, NULL }
+#define AES_INSN(NAME,OPCODE,MASK,CLASS,OPS,QUALS,FLAGS) \
+  { NAME, OPCODE, MASK, CLASS, 0, AES, OPS, QUALS, FLAGS, 0, NULL }
 #define DOT_INSN(NAME,OPCODE,MASK,CLASS,OPS,QUALS,FLAGS) \
   { NAME, OPCODE, MASK, CLASS, 0, DOTPROD, OPS, QUALS, FLAGS, 0, NULL }
 
@@ -2170,9 +2181,9 @@ struct aarch64_opcode aarch64_opcode_table[] =
   SIMD_INSN ("sqdmull", 0x0e20d000, 0xff20fc00, asimddiff, 0, OP3 (Vd, Vn, Vm), QL_V3LONGHS,   F_SIZEQ),
   SIMD_INSN ("sqdmull2",0x4e20d000, 0xff20fc00, asimddiff, 0, OP3 (Vd, Vn, Vm), QL_V3LONGHS2,  F_SIZEQ),
   SIMD_INSN ("pmull",   0x0e20e000, 0xffe0fc00, asimddiff, 0, OP3 (Vd, Vn, Vm), QL_V3LONGB,    0),
-  CRYP_INSN ("pmull",   0x0ee0e000, 0xffe0fc00, asimddiff, OP3 (Vd, Vn, Vm), QL_V3LONGD,    0),
+  AES_INSN ("pmull",   0x0ee0e000, 0xffe0fc00, asimddiff, OP3 (Vd, Vn, Vm), QL_V3LONGD,    0),
   SIMD_INSN ("pmull2",  0x4e20e000, 0xffe0fc00, asimddiff, 0, OP3 (Vd, Vn, Vm), QL_V3LONGB2,   0),
-  CRYP_INSN ("pmull2",  0x4ee0e000, 0xffe0fc00, asimddiff, OP3 (Vd, Vn, Vm), QL_V3LONGD2,   0),
+  AES_INSN ("pmull2",  0x4ee0e000, 0xffe0fc00, asimddiff, OP3 (Vd, Vn, Vm), QL_V3LONGD2,   0),
   SIMD_INSN ("uaddl",   0x2e200000, 0xff20fc00, asimddiff, 0, OP3 (Vd, Vn, Vm), QL_V3LONGBHS,  F_SIZEQ),
   SIMD_INSN ("uaddl2",  0x6e200000, 0xff20fc00, asimddiff, 0, OP3 (Vd, Vn, Vm), QL_V3LONGBHS2, F_SIZEQ),
   SIMD_INSN ("uaddw",   0x2e201000, 0xff20fc00, asimddiff, 0, OP3 (Vd, Vn, Vm), QL_V3WIDEBHS,  F_SIZEQ),
@@ -2795,22 +2806,22 @@ struct aarch64_opcode aarch64_opcode_table[] =
   CORE_INSN ("csneg", 0x5a800400, 0x7fe00c00, condsel, 0, OP4 (Rd, Rn, Rm, COND), QL_CSEL, F_HAS_ALIAS | F_SF),
   CORE_INSN ("cneg", 0x5a800400, 0x7fe00c00, condsel, OP_CNEG, OP3 (Rd, Rn, COND1), QL_CSEL, F_ALIAS | F_SF | F_CONV),
   /* Crypto AES.  */
-  CRYP_INSN ("aese",     0x4e284800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
-  CRYP_INSN ("aesd",     0x4e285800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
-  CRYP_INSN ("aesmc",    0x4e286800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
-  CRYP_INSN ("aesimc",   0x4e287800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
+  AES_INSN ("aese",     0x4e284800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
+  AES_INSN ("aesd",     0x4e285800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
+  AES_INSN ("aesmc",    0x4e286800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
+  AES_INSN ("aesimc",   0x4e287800, 0xfffffc00, cryptoaes, OP2 (Vd, Vn), QL_V2SAME16B, 0),
   /* Crypto two-reg SHA.  */
-  CRYP_INSN ("sha1h",    0x5e280800, 0xfffffc00, cryptosha2, OP2 (Fd, Fn), QL_2SAMES, 0),
-  CRYP_INSN ("sha1su1",  0x5e281800, 0xfffffc00, cryptosha2, OP2 (Vd, Vn), QL_V2SAME4S, 0),
-  CRYP_INSN ("sha256su0",0x5e282800, 0xfffffc00, cryptosha2, OP2 (Vd, Vn), QL_V2SAME4S, 0),
+  SHA2_INSN ("sha1h",    0x5e280800, 0xfffffc00, cryptosha2, OP2 (Fd, Fn), QL_2SAMES, 0),
+  SHA2_INSN ("sha1su1",  0x5e281800, 0xfffffc00, cryptosha2, OP2 (Vd, Vn), QL_V2SAME4S, 0),
+  SHA2_INSN ("sha256su0",0x5e282800, 0xfffffc00, cryptosha2, OP2 (Vd, Vn), QL_V2SAME4S, 0),
   /* Crypto three-reg SHA.  */
-  CRYP_INSN ("sha1c",    0x5e000000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHAUPT, 0),
-  CRYP_INSN ("sha1p",    0x5e001000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHAUPT, 0),
-  CRYP_INSN ("sha1m",    0x5e002000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHAUPT, 0),
-  CRYP_INSN ("sha1su0",  0x5e003000, 0xffe0fc00, cryptosha3, OP3 (Vd, Vn, Vm), QL_V3SAME4S, 0),
-  CRYP_INSN ("sha256h",  0x5e004000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHA256UPT, 0),
-  CRYP_INSN ("sha256h2", 0x5e005000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHA256UPT, 0),
-  CRYP_INSN ("sha256su1",0x5e006000, 0xffe0fc00, cryptosha3, OP3 (Vd, Vn, Vm), QL_V3SAME4S, 0),
+  SHA2_INSN ("sha1c",    0x5e000000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHAUPT, 0),
+  SHA2_INSN ("sha1p",    0x5e001000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHAUPT, 0),
+  SHA2_INSN ("sha1m",    0x5e002000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHAUPT, 0),
+  SHA2_INSN ("sha1su0",  0x5e003000, 0xffe0fc00, cryptosha3, OP3 (Vd, Vn, Vm), QL_V3SAME4S, 0),
+  SHA2_INSN ("sha256h",  0x5e004000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHA256UPT, 0),
+  SHA2_INSN ("sha256h2", 0x5e005000, 0xffe0fc00, cryptosha3, OP3 (Fd, Fn, Vm), QL_SHA256UPT, 0),
+  SHA2_INSN ("sha256su1",0x5e006000, 0xffe0fc00, cryptosha3, OP3 (Vd, Vn, Vm), QL_V3SAME4S, 0),
   /* Data-processing (1 source).  */
   CORE_INSN ("rbit",  0x5ac00000, 0x7ffffc00, dp_1src, 0, OP2 (Rd, Rn), QL_I2SAME, F_SF),
   CORE_INSN ("rev16", 0x5ac00400, 0x7ffffc00, dp_1src, 0, OP2 (Rd, Rn), QL_I2SAME, F_SF),