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target/arm: Implement the GMI instruction

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Backports commit 438efea0bb639c9c2dfb42c8d9459e21aa183c8a from qemu
This commit is contained in:
Richard Henderson 2021-02-25 14:44:27 -05:00 committed by Lioncash
parent 911a6b57ed
commit 13fd83fcc9
1 changed files with 15 additions and 0 deletions
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15
qemu/target/arm/translate-a64.c
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@ -5569,6 +5569,21 @@ 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(tcg_ctx, 1);
TCGv_i64 t2 = tcg_temp_new_i64(tcg_ctx);
tcg_gen_extract_i64(tcg_ctx, t2, cpu_reg_sp(s, rn), 56, 4);
tcg_gen_shl_i64(tcg_ctx, t1, t1, t2);
tcg_gen_or_i64(tcg_ctx, cpu_reg(s, rd), cpu_reg(s, rm), t1);
tcg_temp_free_i64(tcg_ctx, t1);
tcg_temp_free_i64(tcg_ctx, t2);
}
break;
case 8: /* LSLV */
handle_shift_reg(s, A64_SHIFT_TYPE_LSL, sf, rm, rn, rd);
break;