S/390: Add check for length field operand

gas/
2015-03-10  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	* gas/config/tc-s390.c (md_gather_operands): Check for valid
	length field operands.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 0a6a4b9..577a1cd 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2015-03-10  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>
+
+       * config/tc-s390.c (md_gather_operands): Check for valid
+       length field operands.
+
 2015-03-10  Michael Perkins  <perkinsmg75@yahoo.co.uk>
 
        * config/tc-arm.c (parse_operands): Fix bug setting writeback

diff --git a/gas/config/tc-s390.c b/gas/config/tc-s390.c
index 9102c60..5051baf 100644 (file)
--- a/gas/config/tc-s390.c
+++ b/gas/config/tc-s390.c
@@ -1216,6 +1216,9 @@ md_gather_operands (char *str,
            }
          else
            {
+             if ((operand->flags & S390_OPERAND_LENGTH)
+                 && ex.X_op != O_constant)
+               as_fatal (_("invalid length field specified"));
              if ((operand->flags & S390_OPERAND_INDEX)
                  && ex.X_add_number == 0
                  && warn_areg_zero)