[BINUTILS, AARCH64, 1/8] Add support for Memory Tagging Extension for ARMv8.5-A

[deliverable/binutils-gdb.git] / gas / config / tc-aarch64.c

diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index 8621a3356796df098042da5a6237a9d8b4430d82..b9aceb2f0f548d361a584f50ce6bb75058212980 100644 (file)
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -3933,6 +3933,47 @@ parse_barrier_psb (char **str,
   return 0;
 }
 
+/* Parse an operand for BTI.  Set *HINT_OPT to the hint-option record
+   return 0 if successful.  Otherwise return PARSE_FAIL.  */
+
+static int
+parse_bti_operand (char **str,
+                  const struct aarch64_name_value_pair ** hint_opt)
+{
+  char *p, *q;
+  const struct aarch64_name_value_pair *o;
+
+  p = q = *str;
+  while (ISALPHA (*q))
+    q++;
+
+  o = hash_find_n (aarch64_hint_opt_hsh, p, q - p);
+  if (!o)
+    {
+      set_fatal_syntax_error
+       ( _("unknown option to BTI"));
+      return PARSE_FAIL;
+    }
+
+  switch (o->value)
+    {
+    /* Valid BTI operands.  */
+    case HINT_OPD_C:
+    case HINT_OPD_J:
+    case HINT_OPD_JC:
+      break;
+
+    default:
+      set_syntax_error
+       (_("unknown option to BTI"));
+      return PARSE_FAIL;
+    }
+
+  *str = q;
+  *hint_opt = o;
+  return 0;
+}
+
 /* Parse a system register or a PSTATE field name for an MSR/MRS instruction.
    Returns the encoding for the option, or PARSE_FAIL.
 
@@ -5151,6 +5192,11 @@ process_omitted_operand (enum aarch64_opnd type, const aarch64_opcode *opcode,
 
     case AARCH64_OPND_BARRIER_ISB:
       operand->barrier = aarch64_barrier_options + default_value;
+      break;
+
+    case AARCH64_OPND_BTI_TARGET:
+      operand->hint_option = aarch64_hint_options + default_value;
+      break;
 
     default:
       break;
@@ -6483,6 +6529,12 @@ sys_reg_ins:
            goto failure;
          break;
 
+       case AARCH64_OPND_BTI_TARGET:
+         val = parse_bti_operand (&str, &(info->hint_option));
+         if (val == PARSE_FAIL)
+           goto failure;
+         break;
+
        default:
          as_fatal (_("unhandled operand code %d"), operands[i]);
        }
@@ -8773,6 +8825,12 @@ static const struct aarch64_option_cpu_value_table aarch64_features[] = {
   {"sha3",             AARCH64_FEATURE (AARCH64_FEATURE_SHA2
                                         | AARCH64_FEATURE_SHA3, 0),
                        AARCH64_ARCH_NONE},
+  {"rng",              AARCH64_FEATURE (AARCH64_FEATURE_RNG, 0),
+                       AARCH64_ARCH_NONE},
+  {"ssbs",             AARCH64_FEATURE (AARCH64_FEATURE_SSBS, 0),
+                       AARCH64_ARCH_NONE},
+  {"memtag",           AARCH64_FEATURE (AARCH64_FEATURE_MEMTAG, 0),
+                       AARCH64_ARCH_NONE},
   {NULL,               AARCH64_ARCH_NONE, AARCH64_ARCH_NONE},
 };