unwind-dw2-fde-darwin.c changes

[Jack Howarth]

Geoff,
    Can you explain why we don't have...

Index: unwind-dw2-fde-darwin.c
===================================================================
--- unwind-dw2-fde-darwin.c     (revision 117350)
+++ unwind-dw2-fde-darwin.c     (working copy)
@@ -61,7 +61,7 @@ struct mach_header;
 struct mach_header_64;
 extern char *getsectdatafromheader (struct mach_header*, const char*,
                        const char *, unsigned long *);
-extern char *getsectdatafromheader_64 (struct mach_header*, const char*,
+extern char *getsectdatafromheader_64 (struct mach_header_64*, const char*,
                        const char *, unsigned long *);
 
 /* This is referenced from KEYMGR_GCC3_DW2_OBJ_LIST.  */
@@ -157,8 +157,12 @@ examine_objects (void *pc, struct dwarf_
 
        /* For ppc only check whether or not we have __DATA eh frames.  */
 #ifdef __ppc__
+#if __LP64__
+       fde = getsectdatafromheader ((struct mach_header_64 *)image->mh, "__DATA", "__eh_frame", &sz);
+#else
        fde = getsectdatafromheader (image->mh, "__DATA", "__eh_frame", &sz);
 #endif
+#endif
 
        if (fde == NULL)
          {

Thanks in advance for any clarifications.
            Jack