[PATCH v2 07/45] target/hppa: Add install_iaq_entries

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

Instead of two separate cpu_iaoq_entry calls, use one call to update
both IAQ_Front and IAQ_Back.  Simplify with an argument combination
that automatically handles a simple increment from Front to Back.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/hppa/translate.c | 64 +++++++++++++++++++++--------------------
 1 file changed, 33 insertions(+), 31 deletions(-)

diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index d272be0e6e..08d5e2a4bc 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -617,6 +617,23 @@ static void copy_iaoq_entry(DisasContext *ctx, TCGv_i64 dest,
     }
 }
 
+static void install_iaq_entries(DisasContext *ctx, uint64_t bi, TCGv_i64 bv,
+                                uint64_t ni, TCGv_i64 nv)
+{
+    copy_iaoq_entry(ctx, cpu_iaoq_f, bi, bv);
+
+    /* Allow ni variable, with nv null, to indicate a trivial advance. */
+    if (ni != -1 || nv) {
+        copy_iaoq_entry(ctx, cpu_iaoq_b, ni, nv);
+    } else if (bi != -1) {
+        copy_iaoq_entry(ctx, cpu_iaoq_b, bi + 4, NULL);
+    } else {
+        tcg_gen_addi_i64(cpu_iaoq_b, cpu_iaoq_f, 4);
+        tcg_gen_andi_i64(cpu_iaoq_b, cpu_iaoq_b,
+                         gva_offset_mask(ctx->tb_flags));
+    }
+}
+
 static inline uint64_t iaoq_dest(DisasContext *ctx, int64_t disp)
 {
     return ctx->iaoq_f + disp + 8;
@@ -629,8 +646,7 @@ static void gen_excp_1(int exception)
 
 static void gen_excp(DisasContext *ctx, int exception)
 {
-    copy_iaoq_entry(ctx, cpu_iaoq_f, ctx->iaoq_f, cpu_iaoq_f);
-    copy_iaoq_entry(ctx, cpu_iaoq_b, ctx->iaoq_b, cpu_iaoq_b);
+    install_iaq_entries(ctx, ctx->iaoq_f, cpu_iaoq_f, ctx->iaoq_b, cpu_iaoq_b);
     nullify_save(ctx);
     gen_excp_1(exception);
     ctx->base.is_jmp = DISAS_NORETURN;
@@ -684,12 +700,10 @@ static void gen_goto_tb(DisasContext *ctx, int which,
 {
     if (use_goto_tb(ctx, b, n)) {
         tcg_gen_goto_tb(which);
-        copy_iaoq_entry(ctx, cpu_iaoq_f, b, NULL);
-        copy_iaoq_entry(ctx, cpu_iaoq_b, n, NULL);
+        install_iaq_entries(ctx, b, NULL, n, NULL);
         tcg_gen_exit_tb(ctx->base.tb, which);
     } else {
-        copy_iaoq_entry(ctx, cpu_iaoq_f, b, cpu_iaoq_b);
-        copy_iaoq_entry(ctx, cpu_iaoq_b, n, ctx->iaoq_n_var);
+        install_iaq_entries(ctx, b, cpu_iaoq_b, n, ctx->iaoq_n_var);
         tcg_gen_lookup_and_goto_ptr();
     }
 }
@@ -1883,9 +1897,7 @@ static bool do_ibranch(DisasContext *ctx, TCGv_i64 dest,
         }
         if (is_n) {
             if (use_nullify_skip(ctx)) {
-                copy_iaoq_entry(ctx, cpu_iaoq_f, -1, next);
-                tcg_gen_addi_i64(next, next, 4);
-                copy_iaoq_entry(ctx, cpu_iaoq_b, -1, next);
+                install_iaq_entries(ctx, -1, next, -1, NULL);
                 nullify_set(ctx, 0);
                 ctx->base.is_jmp = DISAS_IAQ_N_UPDATED;
                 return true;
@@ -1900,14 +1912,10 @@ static bool do_ibranch(DisasContext *ctx, TCGv_i64 dest,
     nullify_over(ctx);
 
     if (is_n && use_nullify_skip(ctx)) {
-        copy_iaoq_entry(ctx, cpu_iaoq_f, -1, dest);
-        next = tcg_temp_new_i64();
-        tcg_gen_addi_i64(next, dest, 4);
-        copy_iaoq_entry(ctx, cpu_iaoq_b, -1, next);
+        install_iaq_entries(ctx, -1, dest, -1, NULL);
         nullify_set(ctx, 0);
     } else {
-        copy_iaoq_entry(ctx, cpu_iaoq_f, ctx->iaoq_b, cpu_iaoq_b);
-        copy_iaoq_entry(ctx, cpu_iaoq_b, -1, dest);
+        install_iaq_entries(ctx, ctx->iaoq_b, cpu_iaoq_b, -1, dest);
         nullify_set(ctx, is_n);
     }
     if (link != 0) {
@@ -1998,9 +2006,7 @@ static void do_page_zero(DisasContext *ctx)
         tcg_gen_st_i64(cpu_gr[26], tcg_env, offsetof(CPUHPPAState, cr[27]));
         tmp = tcg_temp_new_i64();
         tcg_gen_ori_i64(tmp, cpu_gr[31], 3);
-        copy_iaoq_entry(ctx, cpu_iaoq_f, -1, tmp);
-        tcg_gen_addi_i64(tmp, tmp, 4);
-        copy_iaoq_entry(ctx, cpu_iaoq_b, -1, tmp);
+        install_iaq_entries(ctx, -1, tmp, -1, NULL);
         ctx->base.is_jmp = DISAS_IAQ_N_UPDATED;
         break;
 
@@ -2744,8 +2750,8 @@ static bool trans_or(DisasContext *ctx, arg_rrr_cf_d *a)
             nullify_over(ctx);
 
             /* Advance the instruction queue.  */
-            copy_iaoq_entry(ctx, cpu_iaoq_f, ctx->iaoq_b, cpu_iaoq_b);
-            copy_iaoq_entry(ctx, cpu_iaoq_b, ctx->iaoq_n, ctx->iaoq_n_var);
+            install_iaq_entries(ctx, ctx->iaoq_b, cpu_iaoq_b,
+                                ctx->iaoq_n, ctx->iaoq_n_var);
             nullify_set(ctx, 0);
 
             /* Tell the qemu main loop to halt until this cpu has work.  */
@@ -3898,18 +3904,15 @@ static bool trans_be(DisasContext *ctx, arg_be *a)
         tcg_gen_mov_i64(cpu_sr[0], cpu_iasq_b);
     }
     if (a->n && use_nullify_skip(ctx)) {
-        copy_iaoq_entry(ctx, cpu_iaoq_f, -1, tmp);
-        tcg_gen_addi_i64(tmp, tmp, 4);
-        copy_iaoq_entry(ctx, cpu_iaoq_b, -1, tmp);
+        install_iaq_entries(ctx, -1, tmp, -1, NULL);
         tcg_gen_mov_i64(cpu_iasq_f, new_spc);
         tcg_gen_mov_i64(cpu_iasq_b, cpu_iasq_f);
         nullify_set(ctx, 0);
     } else {
-        copy_iaoq_entry(ctx, cpu_iaoq_f, ctx->iaoq_b, cpu_iaoq_b);
+        install_iaq_entries(ctx, ctx->iaoq_b, cpu_iaoq_b, -1, tmp);
         if (ctx->iaoq_b == -1) {
             tcg_gen_mov_i64(cpu_iasq_f, cpu_iasq_b);
         }
-        copy_iaoq_entry(ctx, cpu_iaoq_b, -1, tmp);
         tcg_gen_mov_i64(cpu_iasq_b, new_spc);
         nullify_set(ctx, a->n);
     }
@@ -4018,11 +4021,10 @@ static bool trans_bve(DisasContext *ctx, arg_bve *a)
     nullify_over(ctx);
     dest = do_ibranch_priv(ctx, load_gpr(ctx, a->b));
 
-    copy_iaoq_entry(ctx, cpu_iaoq_f, ctx->iaoq_b, cpu_iaoq_b);
+    install_iaq_entries(ctx, ctx->iaoq_b, cpu_iaoq_b, -1, dest);
     if (ctx->iaoq_b == -1) {
         tcg_gen_mov_i64(cpu_iasq_f, cpu_iasq_b);
     }
-    copy_iaoq_entry(ctx, cpu_iaoq_b, -1, dest);
     tcg_gen_mov_i64(cpu_iasq_b, space_select(ctx, 0, dest));
     if (a->l) {
         copy_iaoq_entry(ctx, cpu_gr[a->l], ctx->iaoq_n, ctx->iaoq_n_var);
@@ -4721,8 +4723,8 @@ static void hppa_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
     case DISAS_IAQ_N_STALE:
     case DISAS_IAQ_N_STALE_EXIT:
         if (ctx->iaoq_f == -1) {
-            copy_iaoq_entry(ctx, cpu_iaoq_f, -1, cpu_iaoq_b);
-            copy_iaoq_entry(ctx, cpu_iaoq_b, ctx->iaoq_n, ctx->iaoq_n_var);
+            install_iaq_entries(ctx, -1, cpu_iaoq_b,
+                                ctx->iaoq_n, ctx->iaoq_n_var);
 #ifndef CONFIG_USER_ONLY
             tcg_gen_mov_i64(cpu_iasq_f, cpu_iasq_b);
 #endif
@@ -4751,8 +4753,8 @@ static void hppa_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
     case DISAS_TOO_MANY:
     case DISAS_IAQ_N_STALE:
     case DISAS_IAQ_N_STALE_EXIT:
-        copy_iaoq_entry(ctx, cpu_iaoq_f, ctx->iaoq_f, cpu_iaoq_f);
-        copy_iaoq_entry(ctx, cpu_iaoq_b, ctx->iaoq_b, cpu_iaoq_b);
+        install_iaq_entries(ctx, ctx->iaoq_f, cpu_iaoq_f,
+                            ctx->iaoq_b, cpu_iaoq_b);
         nullify_save(ctx);
         /* FALLTHRU */
     case DISAS_IAQ_N_UPDATED:
-- 
2.34.1