- return spu_proc_xfer_spu (mem_annex, readbuf, writebuf, offset, len);
+ ret = spu_proc_xfer_spu (mem_annex, readbuf, writebuf, offset, len);
+ if (ret > 0)
+ return ret;
+
+ /* SPU local store access wraps the address around at the
+ local store limit. We emulate this here. To avoid needing
+ an extra access to retrieve the LSLR, we only do that after
+ trying the original address first, and getting end-of-file. */
+ xsnprintf (lslr_annex, sizeof lslr_annex, "%d/lslr", fd);
+ memset (buf, 0, sizeof buf);
+ if (spu_proc_xfer_spu (lslr_annex, buf, NULL, 0, sizeof buf) <= 0)
+ return ret;
+
+ lslr = strtoulst (buf, NULL, 16);
+ return spu_proc_xfer_spu (mem_annex, readbuf, writebuf,
+ offset & lslr, len);