From a19d8eb03e2cf8ba0bf15f98e4f5b1e7d693b6f3 Mon Sep 17 00:00:00 2001
From: Clinton Popetz <cpopetz@cpopetz.com>
Date: Fri, 14 Jan 2000 17:58:29 +0000
Subject: [PATCH] 2000-01-13  Clinton Popetz  <cpopetz@cygnus.com>

        * config/tc-mips.c (mips_do_align): New function.
        * config/tc-mips.h (md_do_align): Define.
---
 gas/ChangeLog        |  5 +++++
 gas/config/tc-mips.c | 30 ++++++++++++++++++++++++++++++
 gas/config/tc-mips.h |  3 +++
 3 files changed, 38 insertions(+)

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 99857e5..db21fcb 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2000-01-13  Clinton Popetz  <cpopetz@cygnus.com>
+
+        * config/tc-mips.c (mips_do_align): New function.
+        * config/tc-mips.h (md_do_align): Define.
+
 2000-01-10  Philip Blundell  <philb@gnu.org>
 
 	* doc/c-arm.texi (ARM Options): Fix typo.
diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c
index d2fdca7..723357a 100644
--- a/gas/config/tc-mips.c
+++ b/gas/config/tc-mips.c
@@ -11436,6 +11436,36 @@ static procS cur_proc;
 static procS *cur_proc_ptr;
 static int numprocs;
 
+/* When we align code in the .text section of mips16, use the correct two
+   byte nop pattern of 0x6500 (move $0,$0) */
+
+int
+mips_do_align (n, fill, len, max)
+     int n;
+     const char *fill;
+     int len;
+     int max;
+{
+  if (fill == NULL
+      && subseg_text_p (now_seg)
+      && n > 1
+      && mips_opts.mips16)
+    {
+      static const unsigned char be_nop[] = { 0x65, 0x00 };
+      static const unsigned char le_nop[] = { 0x00, 0x65 };
+
+      frag_align (1, 0, 0);
+
+      if (target_big_endian)
+      	frag_align_pattern (n, be_nop, 2, max);      
+      else
+      	frag_align_pattern (n, le_nop, 2, max);      
+      return 1;
+    }
+
+  return 0;
+}
+
 static void
 md_obj_begin ()
 {
diff --git a/gas/config/tc-mips.h b/gas/config/tc-mips.h
index ccfd998..a17c642 100644
--- a/gas/config/tc-mips.h
+++ b/gas/config/tc-mips.h
@@ -55,6 +55,9 @@ extern int mips_relax_frag PARAMS ((struct frag *, long));
 #define md_undefined_symbol(name)	(0)
 #define md_operand(x)
 
+extern int mips_do_align PARAMS ((int, const char *, int, int));
+#define md_do_align(n,fill,len,max,l) if (mips_do_align (n,fill,len,max)) goto l
+
 /* We permit PC relative difference expressions when generating
    embedded PIC code.  */
 #define DIFF_EXPR_OK
-- 
2.7.4