tcg: Move tci_tb_ptr to -common

This requires global visibility to common code. Move to tcg-common.

Cc: Stefan Weil <sw@weilnetz.de>
Signed-off-by: NPeter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <cb0340eba225ab4945aa6cf7c9013f33aa05bcf8.1441614289.git.crosthwaite.peter@gmail.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

tcg/tcg-common.c

@@ -24,6 +24,10 @@
 
 #include "tcg/tcg.h"
 
+#if defined(CONFIG_TCG_INTERPRETER)
+uintptr_t tci_tb_ptr;
+#endif
+
 TCGOpDef tcg_op_defs[] = {
 #define DEF(s, oargs, iargs, cargs, flags) \
          { #s, oargs, iargs, cargs, iargs + oargs + cargs, flags },

tci.c

@@ -52,12 +52,6 @@ typedef uint64_t (*helper_function)(tcg_target_ulong, tcg_target_ulong,
                                     tcg_target_ulong);
 #endif
 
-/* Targets which don't use GETPC also don't need tci_tb_ptr
-   which makes them a little faster. */
-#if defined(GETPC)
-uintptr_t tci_tb_ptr;
-#endif
-
 static tcg_target_ulong tci_reg[TCG_TARGET_NB_REGS];
 
 static tcg_target_ulong tci_read_reg(TCGReg index)