[AArch64] Add ARMv8.3 combined pointer authentication load instructions

Add support for ARMv8.3 LDRAA and LDRAB combined pointer authentication and
load instructions.

These instructions authenticate the base register and load 8 byte from it plus
a scaled 10-bit offset with optional writeback to update the base register.

A new instruction class (ldst_imm10) and operand type (AARCH64_OPND_ADDR_SIMM10)
were introduced to handle the special addressing form.

include/
2016-11-18  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	* opcode/aarch64.h (enum aarch64_opnd): Add AARCH64_OPND_ADDR_SIMM10.
	(enum aarch64_insn_class): Add ldst_imm10.

opcodes/
2016-11-18  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	* aarch64-tbl.h (QL_X1NIL): New.
	(arch64_opcode_table): Add ldraa, ldrab.
	(AARCH64_OPERANDS): Add "ADDR_SIMM10".
	* aarch64-asm.h (aarch64_ins_addr_simm10): Declare.
	* aarch64-asm.c (aarch64_ins_addr_simm10): Define.
	* aarch64-dis.h (aarch64_ext_addr_simm10): Declare.
	* aarch64-dis.c (aarch64_ext_addr_simm10): Define.
	* aarch64-opc.h (enum aarch64_field_kind): Add FLD_S_simm10.
	* aarch64-opc.c (fields): Add data for FLD_S_simm10.
	(operand_general_constraint_met_p): Handle AARCH64_OPND_ADDR_SIMM10.
	(aarch64_print_operand): Likewise.
	* aarch64-asm-2.c: Regenerate.
	* aarch64-dis-2.c: Regenerate.
	* aarch64-opc-2.c: Regenerate.

gas/
2016-11-18  Szabolcs Nagy  <szabolcs.nagy@arm.com>

	* config/tc-aarch64.c (parse_operands): Handle AARCH64_OPND_ADDR_SIMM10.
	(fix_insn): Likewise.
	(warn_unpredictable_ldst): Handle ldst_imm10.
	* testsuite/gas/aarch64/pac.s: Add ldraa and ldrab tests.
	* testsuite/gas/aarch64/pac.d: Likewise.
	* testsuite/gas/aarch64/illegal-ldraa.s: New.
	* testsuite/gas/aarch64/illegal-ldraa.l: New.
	* testsuite/gas/aarch64/illegal-ldraa.d: New.

1 files changed, 16 insertions, 15 deletions

diff --git a/opcodes/aarch64-opc-2.c b/opcodes/aarch64-opc-2.c
index 722d7f0..0ab38cb 100644
--- a/opcodes/aarch64-opc-2.c
+++ b/opcodes/aarch64-opc-2.c
@@ -102,6 +102,7 @@ const struct aarch64_operand aarch64_operands[] =
   {AARCH64_OPND_CLASS_ADDRESS, "ADDR_SIMM7", OPD_F_HAS_INSERTER | OPD_F_HAS_EXTRACTOR, {FLD_imm7,FLD_index2}, "an address with 7-bit signed immediate offset"},
   {AARCH64_OPND_CLASS_ADDRESS, "ADDR_SIMM9", OPD_F_HAS_INSERTER | OPD_F_HAS_EXTRACTOR, {FLD_imm9,FLD_index}, "an address with 9-bit signed immediate offset"},
   {AARCH64_OPND_CLASS_ADDRESS, "ADDR_SIMM9_2", OPD_F_HAS_INSERTER | OPD_F_HAS_EXTRACTOR, {FLD_imm9,FLD_index}, "an address with 9-bit negative or unaligned immediate offset"},
+  {AARCH64_OPND_CLASS_ADDRESS, "ADDR_SIMM10", OPD_F_HAS_INSERTER | OPD_F_HAS_EXTRACTOR, {FLD_Rn,FLD_S_imm10,FLD_imm9,FLD_index}, "an address with 10-bit scaled, signed immediate offset"},
   {AARCH64_OPND_CLASS_ADDRESS, "ADDR_UIMM12", OPD_F_HAS_INSERTER | OPD_F_HAS_EXTRACTOR, {FLD_Rn,FLD_imm12}, "an address with scaled, unsigned immediate offset"},
   {AARCH64_OPND_CLASS_ADDRESS, "SIMD_ADDR_SIMPLE", OPD_F_HAS_INSERTER | OPD_F_HAS_EXTRACTOR, {}, "an address with base register (no offset)"},
   {AARCH64_OPND_CLASS_ADDRESS, "SIMD_ADDR_POST", OPD_F_HAS_INSERTER | OPD_F_HAS_EXTRACTOR, {}, "a post-indexed address with immediate or register increment"},
@@ -233,24 +234,24 @@ static const unsigned op_enum_table [] =
   896,
   902,
   903,
-  946,
-  947,
   948,
   949,
+  950,
+  951,
   12,
   627,
   628,
-  1141,
   1143,
   1145,
-  953,
+  1147,
+  955,
+  1146,
   1144,
-  1142,
   311,
   615,
   626,
   625,
-  951,
+  953,
   622,
   619,
   611,
@@ -260,7 +261,7 @@ static const unsigned op_enum_table [] =
   621,
   623,
   624,
-  961,
+  963,
   655,
   658,
   661,
@@ -277,17 +278,17 @@ static const unsigned op_enum_table [] =
   382,
   404,
   406,
+  1208,
+  1213,
   1206,
-  1211,
-  1204,
-  1203,
-  1207,
-  1214,
+  1205,
+  1209,
   1216,
-  1217,
-  1213,
-  1219,
   1218,
+  1219,
+  1215,
+  1221,
+  1220,
 };
 
 /* Given the opcode enumerator OP, return the pointer to the corresponding