[PATCH 38/85] target/sparc: Move DONE, RETRY to decodetree

[Richard Henderson <richard.henderson@linaro.org>]

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/sparc/insns.decode |  3 ++
 target/sparc/translate.c  | 99 +++++++++++++++------------------------
 2 files changed, 40 insertions(+), 62 deletions(-)

diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode
index b7b60f9919..9f17a11dd0 100644
--- a/target/sparc/insns.decode
+++ b/target/sparc/insns.decode
@@ -222,6 +222,9 @@ NOP         10 00000 111011 ----- 1 -------------          # FLUSH reg+imm
 SAVE        10 ..... 111100 ..... . .............          @r_r_ri
 RESTORE     10 ..... 111101 ..... . .............          @r_r_ri
 
+DONE        10 00000 111110 00000 0 0000000000000
+RETRY       10 00001 111110 00000 0 0000000000000
+
 NCP         10 ----- 110110 ----- --------- -----          # v8 CPop1
 NCP         10 ----- 110111 ----- --------- -----          # v8 CPop2
 
diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 960a3eabbd..e652bdcac2 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -54,6 +54,8 @@
 #define gen_helper_write_softint(E, S)  qemu_build_not_reached()
 #define gen_helper_saved                ({ qemu_build_not_reached(); NULL; })
 #define gen_helper_restored             ({ qemu_build_not_reached(); NULL; })
+#define gen_helper_done(E)              qemu_build_not_reached()
+#define gen_helper_retry(E)             qemu_build_not_reached()
 #define gen_helper_udivx(D, E, A, B)    qemu_build_not_reached()
 #define gen_helper_sdivx(D, E, A, B)    qemu_build_not_reached()
 #endif
@@ -4483,6 +4485,36 @@ static bool do_restore(DisasContext *dc, int rd, TCGv src)
 
 TRANS(RESTORE, ALL, do_add_special, a, do_restore)
 
+static bool trans_DONE(DisasContext *dc, arg_DONE *a)
+{
+    if (!avail_64(dc)) {
+        return false;
+    }
+    if (!supervisor(dc)) {
+        return raise_priv(dc);
+    }
+    dc->npc = DYNAMIC_PC;
+    dc->pc = DYNAMIC_PC;
+    translator_io_start(&dc->base);
+    gen_helper_done(tcg_env);
+    return true;
+}
+
+static bool trans_RETRY(DisasContext *dc, arg_RETRY *a)
+{
+    if (!avail_64(dc)) {
+        return false;
+    }
+    if (!supervisor(dc)) {
+        return raise_priv(dc);
+    }
+    dc->npc = DYNAMIC_PC;
+    dc->pc = DYNAMIC_PC;
+    translator_io_start(&dc->base);
+    gen_helper_retry(tcg_env);
+    return true;
+}
+
 #define CHECK_IU_FEATURE(dc, FEATURE)                      \
     if (!((dc)->def->features & CPU_FEATURE_ ## FEATURE))  \
         goto illegal_insn;
@@ -4494,7 +4526,8 @@ TRANS(RESTORE, ALL, do_add_special, a, do_restore)
 static void disas_sparc_legacy(DisasContext *dc, unsigned int insn)
 {
     unsigned int opc, rs1, rs2, rd;
-    TCGv cpu_src1, cpu_src2;
+    TCGv cpu_src1;
+    TCGv cpu_src2 __attribute__((unused));
     TCGv_i32 cpu_src1_32, cpu_src2_32, cpu_dst_32;
     TCGv_i64 cpu_src1_64, cpu_src2_64, cpu_dst_64;
     target_long simm;
@@ -4509,9 +4542,8 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn)
         g_assert_not_reached(); /* in decodetree */
     case 2:                     /* FPU & Logical Operations */
         {
-            unsigned int xop __attribute__((unused)) = GET_FIELD(insn, 7, 12);
+            unsigned int xop = GET_FIELD(insn, 7, 12);
             TCGv cpu_dst __attribute__((unused)) = tcg_temp_new();
-            TCGv cpu_tmp0 __attribute__((unused));
 
             if (xop == 0x34) {   /* FPU Operations */
                 if (gen_trap_ifnofpu(dc)) {
@@ -4831,8 +4863,6 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn)
                     default:
                         goto illegal_insn;
                 }
-            } else if (xop < 0x36) {
-                goto illegal_insn; /* in decodetree */
             } else if (xop == 0x36) {
 #ifdef TARGET_SPARC64
                 /* VIS */
@@ -5274,65 +5304,10 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn)
                 default:
                     goto illegal_insn;
                 }
-#else
-                g_assert_not_reached(); /* in decodetree */
 #endif
-            } else if (xop == 0x37) {
-                /* V8 CPop2, V9 impdep2 */
-                goto illegal_insn; /* in decodetree */
             } else {
-                cpu_src1 = get_src1(dc, insn);
-                cpu_tmp0 = tcg_temp_new();
-                if (IS_IMM) {   /* immediate */
-                    simm = GET_FIELDs(insn, 19, 31);
-                    tcg_gen_addi_tl(cpu_tmp0, cpu_src1, simm);
-                } else {                /* register */
-                    rs2 = GET_FIELD(insn, 27, 31);
-                    if (rs2) {
-                        cpu_src2 = gen_load_gpr(dc, rs2);
-                        tcg_gen_add_tl(cpu_tmp0, cpu_src1, cpu_src2);
-                    } else {
-                        tcg_gen_mov_tl(cpu_tmp0, cpu_src1);
-                    }
-                }
-                switch (xop) {
-                case 0x38:      /* jmpl */
-                case 0x39:      /* rett, V9 return */
-                case 0x3b:      /* flush */
-                case 0x3c:      /* save */
-                case 0x3d:      /* restore */
-                    g_assert_not_reached();  /* in decode tree */
-#if !defined(CONFIG_USER_ONLY) && defined(TARGET_SPARC64)
-                case 0x3e:      /* V9 done/retry */
-                    {
-                        switch (rd) {
-                        case 0:
-                            if (!supervisor(dc))
-                                goto priv_insn;
-                            dc->npc = DYNAMIC_PC;
-                            dc->pc = DYNAMIC_PC;
-                            translator_io_start(&dc->base);
-                            gen_helper_done(tcg_env);
-                            goto jmp_insn;
-                        case 1:
-                            if (!supervisor(dc))
-                                goto priv_insn;
-                            dc->npc = DYNAMIC_PC;
-                            dc->pc = DYNAMIC_PC;
-                            translator_io_start(&dc->base);
-                            gen_helper_retry(tcg_env);
-                            goto jmp_insn;
-                        default:
-                            goto illegal_insn;
-                        }
-                    }
-                    break;
-#endif
-                default:
-                    goto illegal_insn;
-                }
+                goto illegal_insn; /* in decodetree */
             }
-            break;
         }
         break;
     case 3:                     /* load/store instructions */
@@ -5729,7 +5704,7 @@ static void disas_sparc_legacy(DisasContext *dc, unsigned int insn)
  illegal_insn:
     gen_exception(dc, TT_ILL_INSN);
     return;
-#if !defined(CONFIG_USER_ONLY)
+#if !defined(CONFIG_USER_ONLY) && !defined(TARGET_SPARC64)
  priv_insn:
     gen_exception(dc, TT_PRIV_INSN);
     return;
-- 
2.34.1