tcg/ppc: ld/st optimization

Signed-off-by: malc <av1474@comtv.ru>

configure

@@ -3882,7 +3882,7 @@ upper() {
 }
 
 case "$cpu" in
-  i386|x86_64)
+  i386|x86_64|ppc)
     echo "CONFIG_QEMU_LDST_OPTIMIZATION=y" >> $config_target_mak
   ;;
 esac

exec-all.h

@@ -335,6 +335,9 @@ extern uintptr_t tci_tb_ptr;
 #  define GETRA() ((uintptr_t)__builtin_return_address(0))
 #  define GETPC_LDST() ((uintptr_t)(GETRA() + 7 + \
                                     *(int32_t *)((void *)GETRA() + 3) - 1))
+# elif defined (_ARCH_PPC) && !defined (_ARCH_PPC64)
+#  define GETRA() ((uintptr_t)__builtin_return_address(0))
+#  define GETPC_LDST() ((uintptr_t) ((*(int32_t *)(GETRA() + 4)) - 1))
 # else
 #  error "CONFIG_QEMU_LDST_OPTIMIZATION needs GETPC_LDST() implementation!"
 # endif