cpu: Turn cpu_unassigned_access() into a CPUState hook

Use it for all targets, but be careful not to pass invalid CPUState.
cpu_single_env can be NULL, e.g. on Xen.

Signed-off-by: Andreas Färber <afaerber@suse.de>

3 files changed, 13 insertions, 6 deletions

diff --git a/target-mips/cpu.c b/target-mips/cpu.c
index 0fdc31630d..b61e207317 100644
--- a/target-mips/cpu.c
+++ b/target-mips/cpu.c
@@ -80,6 +80,7 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
 
     cc->do_interrupt = mips_cpu_do_interrupt;
     cc->dump_state = mips_cpu_dump_state;
+    cpu_class_set_do_unassigned_access(cc, mips_cpu_unassigned_access);
 }
 
 static const TypeInfo mips_cpu_type_info = {
diff --git a/target-mips/cpu.h b/target-mips/cpu.h
index 6e761e03b6..fa0f0d157f 100644
--- a/target-mips/cpu.h
+++ b/target-mips/cpu.h
@@ -493,8 +493,9 @@ void r4k_helper_tlbwr(CPUMIPSState *env);
 void r4k_helper_tlbp(CPUMIPSState *env);
 void r4k_helper_tlbr(CPUMIPSState *env);
 
-void cpu_unassigned_access(CPUMIPSState *env, hwaddr addr,
-                           int is_write, int is_exec, int unused, int size);
+void mips_cpu_unassigned_access(CPUState *cpu, hwaddr addr,
+                                bool is_write, bool is_exec, int unused,
+                                unsigned size);
 #endif
 
 void mips_cpu_list (FILE *f, fprintf_function cpu_fprintf);
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 3fa0d00cf9..f6838ecd5f 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -2147,13 +2147,18 @@ void tlb_fill(CPUMIPSState *env, target_ulong addr, int is_write, int mmu_idx,
     }
 }
 
-void cpu_unassigned_access(CPUMIPSState *env, hwaddr addr,
-                           int is_write, int is_exec, int unused, int size)
+void mips_cpu_unassigned_access(CPUState *cs, hwaddr addr,
+                                bool is_write, bool is_exec, int unused,
+                                unsigned size)
 {
-    if (is_exec)
+    MIPSCPU *cpu = MIPS_CPU(cs);
+    CPUMIPSState *env = &cpu->env;
+
+    if (is_exec) {
         helper_raise_exception(env, EXCP_IBE);
-    else
+    } else {
         helper_raise_exception(env, EXCP_DBE);
+    }
 }
 #endif /* !CONFIG_USER_ONLY */