6 files changed, 15 insertions, 27 deletions

diff --git a/cpu-exec.c b/cpu-exec.c
index 543460c..4fee061 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -156,12 +156,9 @@ static inline TranslationBlock *tb_find_fast(CPUArchState *env)
 
 static CPUDebugExcpHandler *debug_excp_handler;
 
-CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler)
+void cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler)
 {
-    CPUDebugExcpHandler *old_handler = debug_excp_handler;
-
     debug_excp_handler = handler;
-    return old_handler;
 }
 
 static void cpu_handle_debug_exception(CPUArchState *env)
diff --git a/exec-all.h b/exec-all.h
index 9bda7f7..c5ec8e1 100644
--- a/exec-all.h
+++ b/exec-all.h
@@ -357,7 +357,7 @@ tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr);
 
 typedef void (CPUDebugExcpHandler)(CPUArchState *env);
 
-CPUDebugExcpHandler *cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler);
+void cpu_set_debug_excp_handler(CPUDebugExcpHandler *handler);
 
 /* vl.c */
 extern int singlestep;
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 857b94e..880cfea 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1746,6 +1746,7 @@ static void x86_cpu_initfn(Object *obj)
 {
     X86CPU *cpu = X86_CPU(obj);
     CPUX86State *env = &cpu->env;
+    static int inited;
 
     cpu_exec_init(env);
 
@@ -1775,6 +1776,15 @@ static void x86_cpu_initfn(Object *obj)
                         x86_cpuid_set_tsc_freq, NULL, NULL, NULL);
 
     env->cpuid_apic_id = env->cpu_index;
+
+    /* init various static tables used in TCG mode */
+    if (tcg_enabled() && !inited) {
+        inited = 1;
+        optimize_flags_init();
+#ifndef CONFIG_USER_ONLY
+        cpu_set_debug_excp_handler(breakpoint_handler);
+#endif
+    }
 }
 
 static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 2a61c81..60f9e97 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -935,6 +935,7 @@ static inline int hw_breakpoint_len(unsigned long dr7, int index)
 void hw_breakpoint_insert(CPUX86State *env, int index);
 void hw_breakpoint_remove(CPUX86State *env, int index);
 int check_hw_breakpoints(CPUX86State *env, int force_dr6_update);
+void breakpoint_handler(CPUX86State *env);
 
 /* will be suppressed */
 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
diff --git a/target-i386/helper.c b/target-i386/helper.c
index b748d90..8a5da3d 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -941,9 +941,7 @@ int check_hw_breakpoints(CPUX86State *env, int force_dr6_update)
     return hit_enabled;
 }
 
-static CPUDebugExcpHandler *prev_debug_excp_handler;
-
-static void breakpoint_handler(CPUX86State *env)
+void breakpoint_handler(CPUX86State *env)
 {
     CPUBreakpoint *bp;
 
@@ -965,8 +963,6 @@ static void breakpoint_handler(CPUX86State *env)
                 break;
             }
     }
-    if (prev_debug_excp_handler)
-        prev_debug_excp_handler(env);
 }
 
 typedef struct MCEInjectionParams {
@@ -1155,21 +1151,11 @@ X86CPU *cpu_x86_init(const char *cpu_model)
 {
     X86CPU *cpu;
     CPUX86State *env;
-    static int inited;
 
     cpu = X86_CPU(object_new(TYPE_X86_CPU));
     env = &cpu->env;
     env->cpu_model_str = cpu_model;
 
-    /* init various static tables used in TCG mode */
-    if (tcg_enabled() && !inited) {
-        inited = 1;
-        optimize_flags_init();
-#ifndef CONFIG_USER_ONLY
-        prev_debug_excp_handler =
-            cpu_set_debug_excp_handler(breakpoint_handler);
-#endif
-    }
     if (cpu_x86_register(cpu, cpu_model) < 0) {
         object_delete(OBJECT(cpu));
         return NULL;
diff --git a/target-xtensa/helper.c b/target-xtensa/helper.c
index 044ce18..d5bb171 100644
--- a/target-xtensa/helper.c
+++ b/target-xtensa/helper.c
@@ -54,8 +54,6 @@ static uint32_t check_hw_breakpoints(CPUXtensaState *env)
     return 0;
 }
 
-static CPUDebugExcpHandler *prev_debug_excp_handler;
-
 static void breakpoint_handler(CPUXtensaState *env)
 {
     if (env->watchpoint_hit) {
@@ -70,9 +68,6 @@ static void breakpoint_handler(CPUXtensaState *env)
             cpu_resume_from_signal(env, NULL);
         }
     }
-    if (prev_debug_excp_handler) {
-        prev_debug_excp_handler(env);
-    }
 }
 
 XtensaCPU *cpu_xtensa_init(const char *cpu_model)
@@ -105,8 +100,7 @@ XtensaCPU *cpu_xtensa_init(const char *cpu_model)
 
     if (!debug_handler_inited && tcg_enabled()) {
         debug_handler_inited = 1;
-        prev_debug_excp_handler =
-            cpu_set_debug_excp_handler(breakpoint_handler);
+        cpu_set_debug_excp_handler(breakpoint_handler);
     }
 
     xtensa_irq_init(env);