From: Chao-ying Fu <fu@mips.com>
Date: Thu, 12 Sep 2013 21:41:09 +0000 (+0000)
Subject: 2013-09-12  Chao-ying Fu  <Chao-ying.Fu@imgtec.com>
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=173d34478ad14ae35df062b2240b0d830a83cf31;p=binutils-gdb.git

2013-09-12  Chao-ying Fu  <Chao-ying.Fu@imgtec.com>

	* config/tc-mips.c (match_insn): Set error when $31 is used for
	bltzal* and bgezal*.
---

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 89c9cc9b556..8434721a206 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2013-09-12  Chao-ying Fu  <Chao-ying.Fu@imgtec.com>
+
+	* config/tc-mips.c (match_insn): Set error when $31 is used for
+	bltzal* and bgezal*.
+
 2013-09-04  Tristan Gingold  <gingold@adacore.com>
 
 	* config/tc-ppc.c (md_apply_fix): Handle defined after use toc
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index ca95922ef3c..ff1c610d605 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -7091,6 +7091,10 @@ match_insn (struct mips_cl_insn *insn, const struct mips_opcode *opcode,
 		set_insn_error
 		  (0, _("a destination register must be supplied"));
 	    }
+	  else if (arg.last_regno == 31
+		   && (strncmp (insn->insn_mo->name, "bltzal", 6) == 0
+		       || strncmp (insn->insn_mo->name, "bgezal", 6) == 0))
+	    set_insn_error (0, _("the source register must not be $31"));
 	  check_completed_insn (&arg);
 	  return TRUE;
 	}