softmmu_header: pass CPUState to tlb_fill

Pass CPUState pointer to tlb_fill() instead of architecture local
cpu_single_env hacks.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/target-m68k/op_helper.c b/target-m68k/op_helper.c
index c66fa0c..2f7fe6b 100644
--- a/target-m68k/op_helper.c
+++ b/target-m68k/op_helper.c
@@ -55,17 +55,16 @@
    NULL, it means that the function was called in C code (i.e. not
    from generated code or from helper.c) */
 /* XXX: fix it to restore all registers */
-void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
+void tlb_fill(CPUState *env1, target_ulong addr, int is_write, int mmu_idx,
+              void *retaddr)
 {
     TranslationBlock *tb;
     CPUState *saved_env;
     unsigned long pc;
     int ret;
 
-    /* XXX: hack to restore env in all cases, even if not called from
-       generated code */
     saved_env = env;
-    env = cpu_single_env;
+    env = env1;
     ret = cpu_m68k_handle_mmu_fault(env, addr, is_write, mmu_idx);
     if (unlikely(ret)) {
         if (retaddr) {