[Qemu-devel] [Bug 1768246] Re: cpu-exec.c:648: cpu_loop_exec_tb: Assertion `use_icount' failed.

[Laurent Vivier]

This change seems to fix the problem:

diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 1b9a201d6d..5010b0d349 100644
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -253,7 +253,6 @@ static void gen_goto_tb(DisasContext *ctx, int n, 
target_ulong dest)
             tcg_gen_lookup_and_goto_ptr();
         }
     }
-    ctx->base.is_jmp = DISAS_NORETURN;
 }
 
 static void gen_jump(DisasContext * ctx)
@@ -324,7 +323,6 @@ static void gen_delayed_conditional_jump(DisasContext * ctx)
         gen_jump(ctx);
 
         gen_set_label(l1);
-        ctx->base.is_jmp = DISAS_NEXT;
         return;
     }
 
@@ -1877,6 +1875,7 @@ static void decode_opc(DisasContext * ctx)
         ctx->envflags &= ~GUSA_MASK;
 
         tcg_gen_movi_i32(cpu_flags, ctx->envflags);
+        ctx->base.is_jmp = DISAS_NORETURN;
         if (old_flags & DELAY_SLOT_CONDITIONAL) {
            gen_delayed_conditional_jump(ctx);
         } else {

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https://bugs.launchpad.net/bugs/1768246

Title:
  cpu-exec.c:648: cpu_loop_exec_tb: Assertion `use_icount' failed.

Status in QEMU:
  New

Bug description:
  OpenJDK no longer works on qemu-sh4, it previously did after #1735384
  was fixed.

  Crash indicates an assertion failure:

  (sid-sh4-sbuild)address@hidden:/# java --version
  qemu-sh4-static: /root/qemu/accel/tcg/cpu-exec.c:648: cpu_loop_exec_tb: 
Assertion `use_icount' failed.
  qemu: uncaught target signal 6 (Aborted) - core dumped
  Aborted
  (sid-sh4-sbuild)address@hidden:/#

  Haven't bi-sected the issue yet, but will do so later.

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