2004-02-29  Andrew Cagney  <cagney@redhat.com>

	* amd64-nat.c (amd64_collect_native_gregset): Zero-extend the
	32-bit segment registers.

Index: amd64-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/amd64-nat.c,v
retrieving revision 1.5
diff -u -r1.5 amd64-nat.c
--- amd64-nat.c	28 Feb 2004 21:55:48 -0000	1.5
+++ amd64-nat.c	29 Feb 2004 23:08:08 -0000
@@ -139,6 +139,12 @@
 	  if (regnum == -1 || regnum == i)
 	    memset (regs + amd64_native_gregset_reg_offset (i), 0, 8);
 	}
+      /* Ditto for %cs, %ss, %ds, %es, %fs, and %gs.  */
+      for (i = I386_CS_REGNUM; i < I386_ST0_REGNUM; i++)
+	{
+	  if (regnum == -1 || regnum == i)
+	    memset (regs + amd64_native_gregset_reg_offset (i), 0, 8);
+	}
     }
 
   if (num_regs > NUM_REGS)