diff mbox series

[PULL,06/85] target/arm: Convert PACGA to decodetree

Message ID 20241213173229.3308926-7-peter.maydell@linaro.org
State Accepted
Commit b466ea8f216508788d33202b5db5a5666a08cb28
Headers show
Series [PULL,01/85] target/arm: Add section labels for "Data Processing (register)" | expand

Commit Message

Peter Maydell Dec. 13, 2024, 5:31 p.m. UTC 
From: Richard Henderson <richard.henderson@linaro.org>

Remove disas_data_proc_2src, as this was the last insn
decoded by that function.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241211163036.2297116-7-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/tcg/a64.decode      |  2 ++
 target/arm/tcg/translate-a64.c | 65 ++++++----------------------------
 2 files changed, 13 insertions(+), 54 deletions(-)
diff mbox series

Patch

diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode
index f0a5ffb1cd8..a23d6a6645b 100644
--- a/target/arm/tcg/a64.decode
+++ b/target/arm/tcg/a64.decode
@@ -682,6 +682,8 @@  SUBPS           1 01 11010110 ..... 000000 ..... .....  @rrr
 IRG             1 00 11010110 ..... 000100 ..... .....  @rrr
 GMI             1 00 11010110 ..... 000101 ..... .....  @rrr
 
+PACGA           1 00 11010110 ..... 001100 ..... .....  @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 00e55d42ffd..ca8b644dc7a 100644
--- a/target/arm/tcg/translate-a64.c
+++ b/target/arm/tcg/translate-a64.c
@@ -7674,6 +7674,16 @@  static bool trans_GMI(DisasContext *s, arg_rrr *a)
     return false;
 }
 
+static bool trans_PACGA(DisasContext *s, arg_rrr *a)
+{
+    if (dc_isar_feature(aa64_pauth, s)) {
+        gen_helper_pacga(cpu_reg(s, a->rd), tcg_env,
+                         cpu_reg(s, a->rn), cpu_reg_sp(s, a->rm));
+        return true;
+    }
+    return false;
+}
+
 /* Logical (shifted register)
  *   31  30 29 28       24 23   22 21  20  16 15    10 9    5 4    0
  * +----+-----+-----------+-------+---+------+--------+------+------+
@@ -8555,59 +8565,6 @@  static void disas_data_proc_1src(DisasContext *s, uint32_t insn)
 }
 
 
-/* Data-processing (2 source)
- *   31   30  29 28             21 20  16 15    10 9    5 4    0
- * +----+---+---+-----------------+------+--------+------+------+
- * | sf | 0 | S | 1 1 0 1 0 1 1 0 |  Rm  | opcode |  Rn  |  Rd  |
- * +----+---+---+-----------------+------+--------+------+------+
- */
-static void disas_data_proc_2src(DisasContext *s, uint32_t insn)
-{
-    unsigned int sf, rm, opcode, rn, rd, setflag;
-    sf = extract32(insn, 31, 1);
-    setflag = extract32(insn, 29, 1);
-    rm = extract32(insn, 16, 5);
-    opcode = extract32(insn, 10, 6);
-    rn = extract32(insn, 5, 5);
-    rd = extract32(insn, 0, 5);
-
-    if (setflag && opcode != 0) {
-        unallocated_encoding(s);
-        return;
-    }
-
-    switch (opcode) {
-    case 12: /* PACGA */
-        if (sf == 0 || !dc_isar_feature(aa64_pauth, s)) {
-            goto do_unallocated;
-        }
-        gen_helper_pacga(cpu_reg(s, rd), tcg_env,
-                         cpu_reg(s, rn), cpu_reg_sp(s, rm));
-        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 */
-    case 11: /* RORV */
-    case 16:
-    case 17:
-    case 18:
-    case 19:
-    case 20:
-    case 21:
-    case 22:
-    case 23: /* CRC32 */
-        unallocated_encoding(s);
-        break;
-    }
-}
-
 /*
  * Data processing - register
  *  31  30 29  28      25    21  20  16      10         0
@@ -8674,7 +8631,7 @@  static void disas_data_proc_reg(DisasContext *s, uint32_t insn)
         if (op0) {    /* (1 source) */
             disas_data_proc_1src(s, insn);
         } else {      /* (2 source) */
-            disas_data_proc_2src(s, insn);
+            goto do_unallocated;
         }
         break;
     case 0x8 ... 0xf: /* (3 source) */