From b67c567b79f7f659814d102579d2b503b6d40ed4 Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Tue, 2 Apr 2024 23:07:53 -1000
Subject: [PATCH] accel/tcg: Return bool from TranslatorOps.disas_log
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We have eliminated most uses of this hook.  Reduce
further by allowing the hook to handle only the
special cases, returning false for normal processing.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 accel/tcg/translator.c       |  5 ++---
 include/exec/translator.h    |  2 +-
 target/hppa/translate.c      | 15 ++++++---------
 target/s390x/tcg/translate.c |  8 +++-----
 4 files changed, 12 insertions(+), 18 deletions(-)

diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c
index 98d2500c53..ccd22dcd95 100644
--- a/accel/tcg/translator.c
+++ b/accel/tcg/translator.c
@@ -228,9 +228,8 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
         if (logfile) {
             fprintf(logfile, "----------------\n");
 
-            if (ops->disas_log) {
-                ops->disas_log(db, cpu, logfile);
-            } else {
+            if (!ops->disas_log ||
+                !ops->disas_log(db, cpu, logfile)) {
                 fprintf(logfile, "IN: %s\n", lookup_symbol(db->pc_first));
                 target_disas(logfile, cpu, db->pc_first, db->tb->size);
             }
diff --git a/include/exec/translator.h b/include/exec/translator.h
index fff857a0cc..31c39ab63c 100644
--- a/include/exec/translator.h
+++ b/include/exec/translator.h
@@ -135,7 +135,7 @@ typedef struct TranslatorOps {
     void (*insn_start)(DisasContextBase *db, CPUState *cpu);
     void (*translate_insn)(DisasContextBase *db, CPUState *cpu);
     void (*tb_stop)(DisasContextBase *db, CPUState *cpu);
-    void (*disas_log)(const DisasContextBase *db, CPUState *cpu, FILE *f);
+    bool (*disas_log)(const DisasContextBase *db, CPUState *cpu, FILE *f);
 } TranslatorOps;
 
 /**
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index 1a806a9d09..7287e1debf 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -19,7 +19,6 @@
 
 #include "qemu/osdep.h"
 #include "cpu.h"
-#include "disas/disas.h"
 #include "qemu/host-utils.h"
 #include "exec/exec-all.h"
 #include "exec/page-protection.h"
@@ -4817,7 +4816,7 @@ static void hppa_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
 }
 
 #ifdef CONFIG_USER_ONLY
-static void hppa_tr_disas_log(const DisasContextBase *dcbase,
+static bool hppa_tr_disas_log(const DisasContextBase *dcbase,
                               CPUState *cs, FILE *logfile)
 {
     target_ulong pc = dcbase->pc_first;
@@ -4825,20 +4824,18 @@ static void hppa_tr_disas_log(const DisasContextBase *dcbase,
     switch (pc) {
     case 0x00:
         fprintf(logfile, "IN:\n0x00000000:  (null)\n");
-        return;
+        return true;
     case 0xb0:
         fprintf(logfile, "IN:\n0x000000b0:  light-weight-syscall\n");
-        return;
+        return true;
     case 0xe0:
         fprintf(logfile, "IN:\n0x000000e0:  set-thread-pointer-syscall\n");
-        return;
+        return true;
     case 0x100:
         fprintf(logfile, "IN:\n0x00000100:  syscall\n");
-        return;
+        return true;
     }
-
-    fprintf(logfile, "IN: %s\n", lookup_symbol(pc));
-    target_disas(logfile, cs, pc, dcbase->tb->size);
+    return false;
 }
 #endif
 
diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c
index 6d7f6e7064..d74939389a 100644
--- a/target/s390x/tcg/translate.c
+++ b/target/s390x/tcg/translate.c
@@ -31,7 +31,6 @@
 #include "qemu/osdep.h"
 #include "cpu.h"
 #include "s390x-internal.h"
-#include "disas/disas.h"
 #include "exec/exec-all.h"
 #include "tcg/tcg-op.h"
 #include "tcg/tcg-op-gvec.h"
@@ -6520,7 +6519,7 @@ static void s390x_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
     }
 }
 
-static void s390x_tr_disas_log(const DisasContextBase *dcbase,
+static bool s390x_tr_disas_log(const DisasContextBase *dcbase,
                                CPUState *cs, FILE *logfile)
 {
     DisasContext *dc = container_of(dcbase, DisasContext, base);
@@ -6528,10 +6527,9 @@ static void s390x_tr_disas_log(const DisasContextBase *dcbase,
     if (unlikely(dc->ex_value)) {
         /* ??? Unfortunately target_disas can't use host memory.  */
         fprintf(logfile, "IN: EXECUTE %016" PRIx64, dc->ex_value);
-    } else {
-        fprintf(logfile, "IN: %s\n", lookup_symbol(dc->base.pc_first));
-        target_disas(logfile, cs, dc->base.pc_first, dc->base.tb->size);
+        return true;
     }
+    return false;
 }
 
 static const TranslatorOps s390x_tr_ops = {