Rename misnamed BACK_CHAIN_OFFSET to LR_OFFSET

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5711 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index ca8ca36..7684aa4 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -26,10 +26,10 @@
 
 #ifdef __APPLE__
 #define LINKAGE_AREA_SIZE 24
-#define BACK_CHAIN_OFFSET 8
+#define LR_OFFSET 8
 #else
 #define LINKAGE_AREA_SIZE 8
-#define BACK_CHAIN_OFFSET 4
+#define LR_OFFSET 4
 #endif
 
 #define FAST_PATH
@@ -845,7 +845,7 @@
                        | (i * 4 + LINKAGE_AREA_SIZE + TCG_STATIC_CALL_ARGS_SIZE)
                        )
             );
-    tcg_out32 (s, STW | RS (0) | RA (1) | (frame_size + BACK_CHAIN_OFFSET));
+    tcg_out32 (s, STW | RS (0) | RA (1) | (frame_size + LR_OFFSET));
 
     tcg_out32 (s, MTSPR | RS (3) | CTR);
     tcg_out32 (s, BCCTR | BO_ALWAYS);
@@ -858,7 +858,7 @@
                        | (i * 4 + LINKAGE_AREA_SIZE + TCG_STATIC_CALL_ARGS_SIZE)
                        )
             );
-    tcg_out32 (s, LWZ | RT (0) | RA (1) | (frame_size + BACK_CHAIN_OFFSET));
+    tcg_out32 (s, LWZ | RT (0) | RA (1) | (frame_size + LR_OFFSET));
     tcg_out32 (s, MTSPR | RS (0) | LR);
     tcg_out32 (s, ADDI | RT (1) | RA (1) | frame_size);
     tcg_out32 (s, BCLR | BO_ALWAYS);