aarch64: Implement TLBIP 128-bit instruction

The addition of 128-bit page table descriptors and, with it, the
addition of 128-bit system registers for these means that special
"invalidate translation table entry" instructions are needed to cope
with the new 128-bit model.  This is introduced with the `tlbpi'
instruction, implemented here.

Author: Victor Do Nascimento

gas/config/tc-aarch64.c

@@ -7666,6 +7666,7 @@ parse_operands (char *str, const aarch64_opcode *opcode)
 	  goto sys_reg_ins;
 
 	case AARCH64_OPND_SYSREG_TLBI:
+	case AARCH64_OPND_SYSREG_TLBIP:
 	  inst.base.operands[i].sysins_op =
 	    parse_sys_ins_reg (&str, aarch64_sys_regs_tlbi_hsh);
 	sys_reg_ins:

include/opcode/aarch64.h

@@ -566,6 +566,7 @@ enum aarch64_opnd
   AARCH64_OPND_SYSREG_DC,	/* System register <dc_op> operand.  */
   AARCH64_OPND_SYSREG_IC,	/* System register <ic_op> operand.  */
   AARCH64_OPND_SYSREG_TLBI,	/* System register <tlbi_op> operand.  */
+  AARCH64_OPND_SYSREG_TLBIP,	/* System register <tlbip_op> operand.  */
   AARCH64_OPND_SYSREG_SR,	/* System register RCTX operand.  */
   AARCH64_OPND_BARRIER,		/* Barrier operand.  */
   AARCH64_OPND_BARRIER_DSB_NXS,	/* Barrier operand for DSB nXS variant.  */

opcodes/aarch64-tbl.h

@@ -4218,6 +4218,7 @@ const struct aarch64_opcode aarch64_opcode_table[] =
   CORE_INSN ("dc",  0xd5080000, 0xfff80000, ic_system, 0, OP2 (SYSREG_DC, Rt), QL_SRC_X, F_ALIAS),
   CORE_INSN ("ic",  0xd5080000, 0xfff80000, ic_system, 0, OP2 (SYSREG_IC, Rt_SYS), QL_SRC_X, F_ALIAS | F_OPD1_OPT | F_DEFAULT (0x1F)),
   CORE_INSN ("tlbi",0xd5080000, 0xfff80000, ic_system, 0, OP2 (SYSREG_TLBI, Rt_SYS), QL_SRC_X, F_ALIAS | F_OPD1_OPT | F_DEFAULT (0x1F)),
+  D128_INSN ("tlbip",0xd5480000, 0xfff80000, OP3 (SYSREG_TLBIP, Rt_SYS, PAIRREG_OR_XZR), QL_SRC_X2, F_ALIAS| F_OPD1_OPT | F_OPD_PAIR_OPT | F_DEFAULT (0x1f)),
   V8_7A_INSN ("wfet", 0xd5031000, 0xffffffe0, ic_system, OP1 (Rd), QL_I1X, F_HAS_ALIAS),
   V8_7A_INSN ("wfit", 0xd5031020, 0xffffffe0, ic_system, OP1 (Rd), QL_I1X, F_HAS_ALIAS),
   PREDRES_INSN ("cfp", 0xd50b7380, 0xffffffe0, ic_system, OP2 (SYSREG_SR, Rt), QL_SRC_X, F_ALIAS),
@@ -6351,6 +6352,8 @@ const struct aarch64_opcode aarch64_opcode_table[] =
       "an instruction cache maintenance operation specifier")		\
     Y(SYSTEM, sysins_op, "SYSREG_TLBI", 0, F(),				\
       "a TBL invalidation operation specifier")				\
+    Y(SYSTEM, sysins_op, "SYSREG_TLBIP", 0, F(),				\
+      "a 128-bit TBL invalidation operation specifier")			\
     Y(SYSTEM, sysins_op, "SYSREG_SR", 0, F(),				\
       "a Speculation Restriction option name (RCTX)")			\
     Y(SYSTEM, barrier, "BARRIER", 0, F(),				\