diff mbox series

[v5,46/94] target/sparc: Move FLUSH, SAVE, RESTORE to decodetree

Message ID 20231022232932.80507-47-richard.henderson@linaro.org
State Superseded
Headers show
Series target/sparc: Convert to decodetree | expand

Commit Message

Richard Henderson Oct. 22, 2023, 11:28 p.m. UTC 
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/sparc/insns.decode |  4 ++++
 target/sparc/translate.c  | 35 +++++++++++++++++++++++++----------
 2 files changed, 29 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode
index 271789ac13..aa90b5c5bb 100644
--- a/target/sparc/insns.decode
+++ b/target/sparc/insns.decode
@@ -223,6 +223,10 @@  JMPL        10 ..... 111000 ..... . .............          @r_r_ri
   RETT      10 00000 111001 ..... . .............          @n_r_ri
   RETURN    10 00000 111001 ..... . .............          @n_r_ri
 }
+NOP         10 00000 111011 ----- 0 00000000-----          # FLUSH reg+reg
+NOP         10 00000 111011 ----- 1 -------------          # FLUSH reg+imm
+SAVE        10 ..... 111100 ..... . .............          @r_r_ri
+RESTORE     10 ..... 111101 ..... . .............          @r_r_ri
 
 NCP         10 ----- 110110 ----- --------- -----          # v8 CPop1
 NCP         10 ----- 110111 ----- --------- -----          # v8 CPop2
diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index f3cb5e5146..e90be8b959 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -4077,6 +4077,11 @@  static bool do_saved_restored(DisasContext *dc, bool saved)
 TRANS(SAVED, 64, do_saved_restored, true)
 TRANS(RESTORED, 64, do_saved_restored, false)
 
+static bool trans_NOP(DisasContext *dc, arg_NOP *a)
+{
+    return advance_pc(dc);
+}
+
 static bool trans_NOP_v7(DisasContext *dc, arg_NOP_v7 *a)
 {
     /*
@@ -4454,6 +4459,24 @@  static bool do_return(DisasContext *dc, int rd, TCGv src)
 
 TRANS(RETURN, 64, do_add_special, a, do_return)
 
+static bool do_save(DisasContext *dc, int rd, TCGv src)
+{
+    gen_helper_save(tcg_env);
+    gen_store_gpr(dc, rd, src);
+    return advance_pc(dc);
+}
+
+TRANS(SAVE, ALL, do_add_special, a, do_save)
+
+static bool do_restore(DisasContext *dc, int rd, TCGv src)
+{
+    gen_helper_restore(tcg_env);
+    gen_store_gpr(dc, rd, src);
+    return advance_pc(dc);
+}
+
+TRANS(RESTORE, ALL, do_add_special, a, do_restore)
+
 #define CHECK_IU_FEATURE(dc, FEATURE)                      \
     if (!((dc)->def->features & CPU_FEATURE_ ## FEATURE))  \
         goto illegal_insn;
@@ -5269,18 +5292,10 @@  static void disas_sparc_legacy(DisasContext *dc, unsigned int insn)
                 switch (xop) {
                 case 0x38:      /* jmpl */
                 case 0x39:      /* rett, V9 return */
-                    g_assert_not_reached();  /* in decode tree */
-                case 0x3b: /* flush */
-                    /* nop */
-                    break;
+                case 0x3b:      /* flush */
                 case 0x3c:      /* save */
-                    gen_helper_save(tcg_env);
-                    gen_store_gpr(dc, rd, cpu_tmp0);
-                    break;
                 case 0x3d:      /* restore */
-                    gen_helper_restore(tcg_env);
-                    gen_store_gpr(dc, rd, cpu_tmp0);
-                    break;
+                    g_assert_not_reached();  /* in decode tree */
 #if !defined(CONFIG_USER_ONLY) && defined(TARGET_SPARC64)
                 case 0x3e:      /* V9 done/retry */
                     {