commit f612537e0706761d5692deaa72516695ef0a2ac8
author Alex Bennée <alex.bennee@linaro.org> Mon Mar 17 16:31:47 2014 +0000
committer Peter Maydell <peter.maydell@linaro.org> Mon Mar 17 16:31:47 2014 +0000
tree b705a57b3c3ec649395337b2dd5e37e4593cd251
parent 10113b6903c0256c1741918430b0304c5a60b7a8

target-arm: A64: Add FSQRT to C3.6.17 (two misc)

Implement FSQRT in the two-reg-misc category.
GCC uses this instruction form.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1394822294-14837-5-git-send-email-peter.maydell@linaro.org

target-arm/translate-a64.c

diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index 550decc..427f484 100644
--- a/target-arm/translate-a64.c
+++ b/target-arm/translate-a64.c
@@ -6623,6 +6623,9 @@
     case 0x6f: /* FNEG */
         gen_helper_vfp_negd(tcg_rd, tcg_rn);
         break;
+    case 0x7f: /* FSQRT */
+        gen_helper_vfp_sqrtd(tcg_rd, tcg_rn, cpu_env);
+        break;
     default:
         g_assert_not_reached();
     }
@@ -8392,6 +8395,12 @@
             }
             handle_2misc_fcmp_zero(s, opcode, false, u, is_q, size, rn, rd);
             return;
+        case 0x7f: /* FSQRT */
+            if (size == 3 && !is_q) {
+                unallocated_encoding(s);
+                return;
+            }
+            break;
         case 0x16: /* FCVTN, FCVTN2 */
         case 0x17: /* FCVTL, FCVTL2 */
         case 0x18: /* FRINTN */
@@ -8416,7 +8425,6 @@
         case 0x7b: /* FCVTZU */
         case 0x7c: /* URSQRTE */
         case 0x7d: /* FRSQRTE */
-        case 0x7f: /* FSQRT */
             unsupported_encoding(s, insn);
             return;
         default:
@@ -8493,6 +8501,9 @@
                 case 0x6f: /* FNEG */
                     gen_helper_vfp_negs(tcg_res, tcg_op);
                     break;
+                case 0x7f: /* FSQRT */
+                    gen_helper_vfp_sqrts(tcg_res, tcg_op, cpu_env);
+                    break;
                 default:
                     g_assert_not_reached();
                 }