target/arm: Convert SUBP, IRG, GMI to decodetree

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241211163036.2297116-6-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode
index 1664f4793c120beb888732f5f747151719efbd03..f0a5ffb1cd80fbb4821ab8c4691790f4493de0fa 100644 (file)
--- a/target/arm/tcg/a64.decode
+++ b/target/arm/tcg/a64.decode
@@ -26,6 +26,7 @@
 %hlm            11:1 20:2
 
 &r              rn
+&rrr            rd rn rm
 &ri             rd imm
 &rri_sf         rd rn imm sf
 &rrr_sf         rd rn rm sf
@@ -656,6 +657,7 @@ CPYE            00 011 1 01100 ..... .... 01 ..... ..... @cpy
 
 # Data Processing (2-source)
 
+@rrr            . .......... rm:5 ...... rn:5 rd:5      &rrr
 @rrr_sf         sf:1 .......... rm:5 ...... rn:5 rd:5   &rrr_sf
 
 UDIV            . 00 11010110 ..... 00001 0 ..... ..... @rrr_sf
@@ -675,6 +677,11 @@ CRC32C          0 00 11010110 ..... 0101 01 ..... ..... @rrr_h
 CRC32C          0 00 11010110 ..... 0101 10 ..... ..... @rrr_s
 CRC32C          1 00 11010110 ..... 0101 11 ..... ..... @rrr_d
 
+SUBP            1 00 11010110 ..... 000000 ..... .....  @rrr
+SUBPS           1 01 11010110 ..... 000000 ..... .....  @rrr
+IRG             1 00 11010110 ..... 000100 ..... .....  @rrr
+GMI             1 00 11010110 ..... 000101 ..... .....  @rrr
+
 # Data Processing (1-source)
 # Logical (shifted reg)
 # Add/subtract (shifted reg)

diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c
index 22594a1149d2e53085b6617c1971eaaf89282ae9..00e55d42ffd3a73927636fadea094383582c6106 100644 (file)
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -7625,6 +7625,55 @@ static bool do_crc32(DisasContext *s, arg_rrr_e *a, bool crc32c)
 TRANS_FEAT(CRC32, aa64_crc32, do_crc32, a, false)
 TRANS_FEAT(CRC32C, aa64_crc32, do_crc32, a, true)
 
+static bool do_subp(DisasContext *s, arg_rrr *a, bool setflag)
+{
+    TCGv_i64 tcg_n = read_cpu_reg_sp(s, a->rn, true);
+    TCGv_i64 tcg_m = read_cpu_reg_sp(s, a->rm, true);
+    TCGv_i64 tcg_d = cpu_reg(s, a->rd);
+
+    tcg_gen_sextract_i64(tcg_n, tcg_n, 0, 56);
+    tcg_gen_sextract_i64(tcg_m, tcg_m, 0, 56);
+
+    if (setflag) {
+        gen_sub_CC(true, tcg_d, tcg_n, tcg_m);
+    } else {
+        tcg_gen_sub_i64(tcg_d, tcg_n, tcg_m);
+    }
+    return true;
+}
+
+TRANS_FEAT(SUBP, aa64_mte_insn_reg, do_subp, a, false)
+TRANS_FEAT(SUBPS, aa64_mte_insn_reg, do_subp, a, true)
+
+static bool trans_IRG(DisasContext *s, arg_rrr *a)
+{
+    if (dc_isar_feature(aa64_mte_insn_reg, s)) {
+        TCGv_i64 tcg_rd = cpu_reg_sp(s, a->rd);
+        TCGv_i64 tcg_rn = cpu_reg_sp(s, a->rn);
+
+        if (s->ata[0]) {
+            gen_helper_irg(tcg_rd, tcg_env, tcg_rn, cpu_reg(s, a->rm));
+        } else {
+            gen_address_with_allocation_tag0(tcg_rd, tcg_rn);
+        }
+        return true;
+    }
+    return false;
+}
+
+static bool trans_GMI(DisasContext *s, arg_rrr *a)
+{
+    if (dc_isar_feature(aa64_mte_insn_reg, s)) {
+        TCGv_i64 t = tcg_temp_new_i64();
+
+        tcg_gen_extract_i64(t, cpu_reg_sp(s, a->rn), 56, 4);
+        tcg_gen_shl_i64(t, tcg_constant_i64(1), t);
+        tcg_gen_or_i64(cpu_reg(s, a->rd), cpu_reg(s, a->rm), t);
+        return true;
+    }
+    return false;
+}
+
 /* Logical (shifted register)
  *   31  30 29 28       24 23   22 21  20  16 15    10 9    5 4    0
  * +----+-----+-----------+-------+---+------+--------+------+------+
@@ -8528,48 +8577,6 @@ static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
     }
 
     switch (opcode) {
-    case 0: /* SUBP(S) */
-        if (sf == 0 || !dc_isar_feature(aa64_mte_insn_reg, s)) {
-            goto do_unallocated;
-        } else {
-            TCGv_i64 tcg_n, tcg_m, tcg_d;
-
-            tcg_n = read_cpu_reg_sp(s, rn, true);
-            tcg_m = read_cpu_reg_sp(s, rm, true);
-            tcg_gen_sextract_i64(tcg_n, tcg_n, 0, 56);
-            tcg_gen_sextract_i64(tcg_m, tcg_m, 0, 56);
-            tcg_d = cpu_reg(s, rd);
-
-            if (setflag) {
-                gen_sub_CC(true, tcg_d, tcg_n, tcg_m);
-            } else {
-                tcg_gen_sub_i64(tcg_d, tcg_n, tcg_m);
-            }
-        }
-        break;
-    case 4: /* IRG */
-        if (sf == 0 || !dc_isar_feature(aa64_mte_insn_reg, s)) {
-            goto do_unallocated;
-        }
-        if (s->ata[0]) {
-            gen_helper_irg(cpu_reg_sp(s, rd), tcg_env,
-                           cpu_reg_sp(s, rn), cpu_reg(s, rm));
-        } else {
-            gen_address_with_allocation_tag0(cpu_reg_sp(s, rd),
-                                             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 t = tcg_temp_new_i64();
-
-            tcg_gen_extract_i64(t, cpu_reg_sp(s, rn), 56, 4);
-            tcg_gen_shl_i64(t, tcg_constant_i64(1), t);
-            tcg_gen_or_i64(cpu_reg(s, rd), cpu_reg(s, rm), t);
-        }
-        break;
     case 12: /* PACGA */
         if (sf == 0 || !dc_isar_feature(aa64_pauth, s)) {
             goto do_unallocated;
@@ -8579,8 +8586,11 @@ static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
         break;
     default:
     do_unallocated:
+    case 0: /* SUBP(S) */
     case 2: /* UDIV */
     case 3: /* SDIV */
+    case 4: /* IRG */
+    case 5: /* GMI */
     case 8: /* LSLV */
     case 9: /* LSRV */
     case 10: /* ASRV */