[PULL 29/94] target/sparc: Move WRTBR, WRHPR to decodetree

[Richard Henderson]

Implement htstate in the obvious way.

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 |   9 ++++
 target/sparc/translate.c  | 111 +++++++++++++++++++-------------------
 2 files changed, 66 insertions(+), 54 deletions(-)

diff --git a/target/sparc/insns.decode b/target/sparc/insns.decode
index f478999ee1..eab737fdcc 100644
--- a/target/sparc/insns.decode
+++ b/target/sparc/insns.decode
@@ -143,6 +143,15 @@ WRPR_strand_status  10 11010 110010 ..... . .............  
@n_r_ri
   RDTBR     10 rd:5  101011 00000 0 0000000000000
 }
 
+{
+  WRTBR             10 00000 110011 ..... . .............  @n_r_ri
+  WRHPR_hpstate     10 00000 110011 ..... . .............  @n_r_ri
+}
+WRHPR_htstate       10 00001 110011 ..... . .............  @n_r_ri
+WRHPR_hintp         10 00011 110011 ..... . .............  @n_r_ri
+WRHPR_htba          10 00101 110011 ..... . .............  @n_r_ri
+WRHPR_hstick_cmpr   10 11111 110011 ..... . .............  @n_r_ri
+
 Tcc_r       10 0 cond:4 111010 rs1:5 0 cc:1 0000000 rs2:5
 {
   # For v7, the entire simm13 field is present, but masked to 7 bits.
diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index 9b82e2bf6f..d87c08c18c 100644
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -50,6 +50,7 @@
 # define gen_helper_set_softint(E, S)           qemu_build_not_reached()
 # define gen_helper_tick_get_count(D, E, T, C)  qemu_build_not_reached()
 # define gen_helper_tick_set_count(P, S)        qemu_build_not_reached()
+# define gen_helper_tick_set_limit(P, S)        qemu_build_not_reached()
 # define gen_helper_wrccr(E, S)                 qemu_build_not_reached()
 # define gen_helper_wrcwp(E, S)                 qemu_build_not_reached()
 # define gen_helper_wrgl(E, S)                  qemu_build_not_reached()
@@ -3935,6 +3936,61 @@ static void do_wrssr(DisasContext *dc, TCGv src)
 
 TRANS(WRPR_strand_status, HYPV, do_wr_special, a, hypervisor(dc), do_wrssr)
 
+TRANS(WRTBR, 32, do_wr_special, a, supervisor(dc), do_wrtba)
+
+static void do_wrhpstate(DisasContext *dc, TCGv src)
+{
+    tcg_gen_st_tl(src, tcg_env, env64_field_offsetof(hpstate));
+    dc->base.is_jmp = DISAS_EXIT;
+}
+
+TRANS(WRHPR_hpstate, HYPV, do_wr_special, a, hypervisor(dc), do_wrhpstate)
+
+static void do_wrhtstate(DisasContext *dc, TCGv src)
+{
+    TCGv_i32 tl = tcg_temp_new_i32();
+    TCGv_ptr tp = tcg_temp_new_ptr();
+
+    tcg_gen_ld_i32(tl, tcg_env, env64_field_offsetof(tl));
+    tcg_gen_andi_i32(tl, tl, MAXTL_MASK);
+    tcg_gen_shli_i32(tl, tl, 3);
+    tcg_gen_ext_i32_ptr(tp, tl);
+    tcg_gen_add_ptr(tp, tp, tcg_env);
+
+    tcg_gen_st_tl(src, tp, env64_field_offsetof(htstate));
+}
+
+TRANS(WRHPR_htstate, HYPV, do_wr_special, a, hypervisor(dc), do_wrhtstate)
+
+static void do_wrhintp(DisasContext *dc, TCGv src)
+{
+    tcg_gen_mov_tl(cpu_hintp, src);
+}
+
+TRANS(WRHPR_hintp, HYPV, do_wr_special, a, hypervisor(dc), do_wrhintp)
+
+static void do_wrhtba(DisasContext *dc, TCGv src)
+{
+    tcg_gen_mov_tl(cpu_htba, src);
+}
+
+TRANS(WRHPR_htba, HYPV, do_wr_special, a, hypervisor(dc), do_wrhtba)
+
+static void do_wrhstick_cmpr(DisasContext *dc, TCGv src)
+{
+    TCGv_ptr r_tickptr = tcg_temp_new_ptr();
+
+    tcg_gen_mov_tl(cpu_hstick_cmpr, src);
+    tcg_gen_ld_ptr(r_tickptr, tcg_env, env64_field_offsetof(hstick));
+    translator_io_start(&dc->base);
+    gen_helper_tick_set_limit(r_tickptr, cpu_hstick_cmpr);
+    /* End TB to handle timer interrupt */
+    dc->base.is_jmp = DISAS_EXIT;
+}
+
+TRANS(WRHPR_hstick_cmpr, HYPV, do_wr_special, a, hypervisor(dc),
+      do_wrhstick_cmpr)
+
 static bool do_saved_restored(DisasContext *dc, bool saved)
 {
     if (!supervisor(dc)) {
@@ -4624,63 +4680,10 @@ static void disas_sparc_legacy(DisasContext *dc, 
unsigned int insn)
 #endif
                     case 0x30:
                         goto illegal_insn;  /* WRASR in decodetree */
-#if !defined(CONFIG_USER_ONLY)
                     case 0x32:
                         goto illegal_insn;  /* WRPR in decodetree */
                     case 0x33: /* wrtbr, UA2005 wrhpr */
-                        {
-#ifndef TARGET_SPARC64
-                            if (!supervisor(dc))
-                                goto priv_insn;
-                            tcg_gen_xor_tl(cpu_tbr, cpu_src1, cpu_src2);
-#else
-                            CHECK_IU_FEATURE(dc, HYPV);
-                            if (!hypervisor(dc))
-                                goto priv_insn;
-                            cpu_tmp0 = tcg_temp_new();
-                            tcg_gen_xor_tl(cpu_tmp0, cpu_src1, cpu_src2);
-                            switch (rd) {
-                            case 0: // hpstate
-                                tcg_gen_st_i64(cpu_tmp0, tcg_env,
-                                               offsetof(CPUSPARCState,
-                                                        hpstate));
-                                save_state(dc);
-                                gen_op_next_insn();
-                                tcg_gen_exit_tb(NULL, 0);
-                                dc->base.is_jmp = DISAS_NORETURN;
-                                break;
-                            case 1: // htstate
-                                // XXX gen_op_wrhtstate();
-                                break;
-                            case 3: // hintp
-                                tcg_gen_mov_tl(cpu_hintp, cpu_tmp0);
-                                break;
-                            case 5: // htba
-                                tcg_gen_mov_tl(cpu_htba, cpu_tmp0);
-                                break;
-                            case 31: // hstick_cmpr
-                                {
-                                    TCGv_ptr r_tickptr;
-
-                                    tcg_gen_mov_tl(cpu_hstick_cmpr, cpu_tmp0);
-                                    r_tickptr = tcg_temp_new_ptr();
-                                    tcg_gen_ld_ptr(r_tickptr, tcg_env,
-                                                   offsetof(CPUSPARCState, 
hstick));
-                                    translator_io_start(&dc->base);
-                                    gen_helper_tick_set_limit(r_tickptr,
-                                                              cpu_hstick_cmpr);
-                                    /* End TB to handle timer interrupt */
-                                    dc->base.is_jmp = DISAS_EXIT;
-                                }
-                                break;
-                            case 6: // hver readonly
-                            default:
-                                goto illegal_insn;
-                            }
-#endif
-                        }
-                        break;
-#endif
+                        goto illegal_insn;  /* WRTBR, WRHPR in decodetree */
 #ifdef TARGET_SPARC64
                     case 0x2c: /* V9 movcc */
                         {
-- 
2.34.1