Use uintptr_t for various op related functions

Use uintptr_t instead of void * or unsigned long in
several op related functions, env->mem_io_pc and
GETPC() macro.

Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/exec.c b/exec.c
index 03d3a6b..63a0d2f 100644
--- a/exec.c
+++ b/exec.c
@@ -1221,7 +1221,7 @@
 
 #if !defined(CONFIG_SOFTMMU)
 static void tb_invalidate_phys_page(tb_page_addr_t addr,
-                                    unsigned long pc, void *puc)
+                                    uintptr_t pc, void *puc)
 {
     TranslationBlock *tb;
     PageDesc *p;
@@ -4477,20 +4477,20 @@
 
 /* in deterministic execution mode, instructions doing device I/Os
    must be at the end of the TB */
-void cpu_io_recompile(CPUArchState *env, void *retaddr)
+void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr)
 {
     TranslationBlock *tb;
     uint32_t n, cflags;
     target_ulong pc, cs_base;
     uint64_t flags;
 
-    tb = tb_find_pc((uintptr_t)retaddr);
+    tb = tb_find_pc(retaddr);
     if (!tb) {
         cpu_abort(env, "cpu_io_recompile: could not find TB for pc=%p", 
-                  retaddr);
+                  (void *)retaddr);
     }
     n = env->icount_decr.u16.low + tb->icount;
-    cpu_restore_state(tb, env, (unsigned long)retaddr);
+    cpu_restore_state(tb, env, retaddr);
     /* Calculate how many instructions had been executed before the fault
        occurred.  */
     n = n - env->icount_decr.u16.low;
@@ -4638,7 +4638,7 @@
 
 #define MMUSUFFIX _cmmu
 #undef GETPC
-#define GETPC() NULL
+#define GETPC() ((uintptr_t)0)
 #define env cpu_single_env
 #define SOFTMMU_CODE_ACCESS