[Qemu-devel] [PATCH 1/2] translator: pass max_insns to tb_start

["Emilio G. Cota" <cota@braap.org>]

sh4 will need it.

Signed-off-by: Emilio G. Cota <cota@braap.org>
---
 accel/tcg/translator.c     | 2 +-
 include/exec/translator.h  | 3 ++-
 target/alpha/translate.c   | 3 ++-
 target/arm/translate-a64.c | 4 +++-
 target/arm/translate.c     | 4 +++-
 target/hppa/translate.c    | 4 +++-
 target/i386/translate.c    | 3 ++-
 7 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c
index 23c6602..4ab6f8d 100644
--- a/accel/tcg/translator.c
+++ b/accel/tcg/translator.c
@@ -64,7 +64,7 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db,
 
     /* Start translating.  */
     gen_tb_start(db->tb);
-    ops->tb_start(db, cpu);
+    max_insns = ops->tb_start(db, cpu, max_insns);
     tcg_debug_assert(db->is_jmp == DISAS_NEXT);  /* no early exit */
 
     while (true) {
diff --git a/include/exec/translator.h b/include/exec/translator.h
index e2dc2a0..0182ada 100644
--- a/include/exec/translator.h
+++ b/include/exec/translator.h
@@ -81,6 +81,7 @@ typedef struct DisasContextBase {
  * @tb_start:
  *      Emit any code required before the start of the main loop,
  *      after the generic gen_tb_start().
+ *      Return max_insns, modified if necessary.
  *
  * @insn_start:
  *      Emit the tcg_gen_insn_start opcode.
@@ -108,7 +109,7 @@ typedef struct DisasContextBase {
 typedef struct TranslatorOps {
     int (*init_disas_context)(DisasContextBase *db, CPUState *cpu,
                               int max_insns);
-    void (*tb_start)(DisasContextBase *db, CPUState *cpu);
+    int (*tb_start)(DisasContextBase *db, CPUState *cpu, int max_insns);
     void (*insn_start)(DisasContextBase *db, CPUState *cpu);
     bool (*breakpoint_check)(DisasContextBase *db, CPUState *cpu,
                              const CPUBreakpoint *bp);
diff --git a/target/alpha/translate.c b/target/alpha/translate.c
index 73a1b5e..b603dbd 100644
--- a/target/alpha/translate.c
+++ b/target/alpha/translate.c
@@ -2963,8 +2963,9 @@ static int alpha_tr_init_disas_context(DisasContextBase *dcbase,
     return MIN(max_insns, bound);
 }
 
-static void alpha_tr_tb_start(DisasContextBase *db, CPUState *cpu)
+static int alpha_tr_tb_start(DisasContextBase *db, CPUState *cpu, int max_insns)
 {
+    return max_insns;
 }
 
 static void alpha_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c
index 1c88539..7aa47ee 100644
--- a/target/arm/translate-a64.c
+++ b/target/arm/translate-a64.c
@@ -12080,9 +12080,11 @@ static int aarch64_tr_init_disas_context(DisasContextBase *dcbase,
     return max_insns;
 }
 
-static void aarch64_tr_tb_start(DisasContextBase *db, CPUState *cpu)
+static int aarch64_tr_tb_start(DisasContextBase *db, CPUState *cpu,
+                               int max_insns)
 {
     tcg_clear_temp_count();
+    return max_insns;
 }
 
 static void aarch64_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 1270022..bdee04e 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -12060,7 +12060,8 @@ static int arm_tr_init_disas_context(DisasContextBase *dcbase,
     return max_insns;
 }
 
-static void arm_tr_tb_start(DisasContextBase *dcbase, CPUState *cpu)
+static int arm_tr_tb_start(DisasContextBase *dcbase, CPUState *cpu,
+                           int max_insns)
 {
     DisasContext *dc = container_of(dcbase, DisasContext, base);
 
@@ -12102,6 +12103,7 @@ static void arm_tr_tb_start(DisasContextBase *dcbase, CPUState *cpu)
         store_cpu_field(tmp, condexec_bits);
     }
     tcg_clear_temp_count();
+    return max_insns;
 }
 
 static void arm_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index b4b74a8..c816ad1 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -4726,7 +4726,8 @@ static int hppa_tr_init_disas_context(DisasContextBase *dcbase,
     return bound;
 }
 
-static void hppa_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
+static int hppa_tr_tb_start(DisasContextBase *dcbase, CPUState *cs,
+                            int max_insns)
 {
     DisasContext *ctx = container_of(dcbase, DisasContext, base);
 
@@ -4738,6 +4739,7 @@ static void hppa_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
         ctx->psw_n_nonzero = true;
     }
     ctx->null_lab = NULL;
+    return max_insns;
 }
 
 static void hppa_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
diff --git a/target/i386/translate.c b/target/i386/translate.c
index 0135415..7527e8d 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -8472,8 +8472,9 @@ static int i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu,
     return max_insns;
 }
 
-static void i386_tr_tb_start(DisasContextBase *db, CPUState *cpu)
+static int i386_tr_tb_start(DisasContextBase *db, CPUState *cpu, int max_insns)
 {
+    return max_insns;
 }
 
 static void i386_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
-- 
2.7.4