ChangeLog:

	* spu-multiarch.c (spu_xfer_partial): Wrap around local store
	limit on local store memory accesses.
	* spu-linux-nat.c (spu_xfer_partial): Likewise.
	* spu-tdep.c (spu_lslr): Remove.
	(spu_pointer_to_address): Do not truncate addresses.
	(spu_integer_to_address): Likewise.
	(spu_overlay_new_objfile): Use SPU_OVERLAY_LMA.
	* spu-tdep.h: Add comments.
	(SPUADDR_SPU): Respect SPU_OVERLAY_LMA bit.
	(SPU_OVERLAY_LMA): Define.

gdbserver/ChangeLog:

	* spu-low.c (spu_read_memory): Wrap around local store limit.
	(spu_write_memory): Likewise.

testsuite/ChangeLog:

	* gdb.arch/spu-ls.exp: New file.
	* gdb.arch/spu-ls.c: Likewise.

1 files changed, 24 insertions, 3 deletions

diff --git a/gdb/spu-multiarch.c b/gdb/spu-multiarch.c
index d072032a510..450aa42fc53 100644
--- a/gdb/spu-multiarch.c
+++ b/gdb/spu-multiarch.c
@@ -259,14 +259,35 @@ spu_xfer_partial (struct target_ops *ops, enum target_object object,
     {
       int fd = SPUADDR_SPU (offset);
       CORE_ADDR addr = SPUADDR_ADDR (offset);
-      char mem_annex[32];
+      char mem_annex[32], lslr_annex[32];
+      gdb_byte buf[32];
+      ULONGEST lslr;
+      LONGEST ret;
 
-      if (fd >= 0 && addr < SPU_LS_SIZE)
+      if (fd >= 0)
 	{
 	  xsnprintf (mem_annex, sizeof mem_annex, "%d/mem", fd);
+	  ret = ops_beneath->to_xfer_partial (ops_beneath, TARGET_OBJECT_SPU,
+					      mem_annex, readbuf, writebuf,
+					      addr, 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 (ops_beneath->to_xfer_partial (ops_beneath, TARGET_OBJECT_SPU,
+					    lslr_annex, buf, NULL,
+					    0, sizeof buf) <= 0)
+	    return ret;
+
+	  lslr = strtoulst (buf, NULL, 16);
 	  return ops_beneath->to_xfer_partial (ops_beneath, TARGET_OBJECT_SPU,
 					       mem_annex, readbuf, writebuf,
-					       addr, len);
+					       addr & lslr, len);
 	}
     }