[v9,12/46] target/arm: Implement the GMI instruction

Message ID 20200626033144.790098-13-richard.henderson@linaro.org
State Superseded
Headers show
Series
  • target/arm: Implement ARMv8.5-MemTag, system mode
Related show

Commit Message

Richard Henderson June 26, 2020, 3:31 a.m.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
v6: Inline the operation.
---
 target/arm/translate-a64.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

-- 
2.25.1

Patch

diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 2ec02c8a5f..ee9dfa8e43 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -5346,6 +5346,21 @@  static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
                                              cpu_reg_sp(s, rn));
         }
         break;
+    case 5: /* GMI */
+        if (sf == 0 || !dc_isar_feature(aa64_mte_insn_reg, s)) {
+            goto do_unallocated;
+        } else {
+            TCGv_i64 t1 = tcg_const_i64(1);
+            TCGv_i64 t2 = tcg_temp_new_i64();
+
+            tcg_gen_extract_i64(t2, cpu_reg_sp(s, rn), 56, 4);
+            tcg_gen_shl_i64(t1, t1, t2);
+            tcg_gen_or_i64(cpu_reg(s, rd), cpu_reg(s, rm), t1);
+
+            tcg_temp_free_i64(t1);
+            tcg_temp_free_i64(t2);
+        }
+        break;
     case 8: /* LSLV */
         handle_shift_reg(s, A64_SHIFT_TYPE_LSL, sf, rm, rn, rd);
         break;