From 20710f1c0ccbba776cfb966cbb41fd7b7cf6cbb1 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@airs.com>
Date: Tue, 13 Feb 1996 00:20:13 +0000
Subject: 	* read.c (potable): Add "mri" and ".mri". 	(s_mri): New
 function. 	* read.h (s_mri): Declare. 	* app.c (scrub_m68k_mri): New
 static variable. 	(mri_pseudo): New static variable. 
 (do_scrub_begin): Add m68k_mri parameter.  Use it rather than 	flag_m68k_mri.
  Initialize scrub_m68k_mri. 	(mri_state, mri_last_ch): New static
 variables. 	(struct app_save): Add scrub_m68k_mri, mri_state, and
 mri_last_ch 	fields. 	(app_push): Save new fields. 	(app_pop):
 Restore new fields. 	(do_scrub_chars): Check scrub_m68k_mri rather than
 flag_mri_mri. 	If TC_M68K, use a trivial state machine to look for
 occurrences of 	the .mri pseudo-op, and change the mode appropriately.
 	* as.h (do_scrub_begin): Update prototype. 	* input-scrub.c
 (input_scrub_begin): Pass flag_m68k_mri to 	do_scrub_begin. 	*
 config/tc-m68k.c (reg_prefix_optional_seen): New static 	variable. 
 (m68k_mri_mode_change): New function. 	(md_parse_option): Set
 reg_prefix_optional_seen. 	* config/tc-m68k.h (m68k_mri_mode_change):
 Declare. 	(MRI_MODE_CHANGE): Define. 	* doc/as.texinfo: Document
 .mri pseudo-op.

---
 gas/read.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

(limited to 'gas/read.c')

diff --git a/gas/read.c b/gas/read.c
index ba392c0..8e0a1c9 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -333,6 +333,8 @@ static const pseudo_typeS potable[] =
   {"lsym", s_lsym, 0},
   {"macro", s_macro, 0},
   {"mexit", s_mexit, 0},
+  {"mri", s_mri, 0},
+  {".mri", s_mri, 0},	/* Special case so .mri works in MRI mode.  */
   {"name", s_ignore, 0},
   {"noformat", s_ignore, 0},
   {"nolist", listing_list, 0},	/* Turn listing off */
@@ -1994,6 +1996,37 @@ s_mexit (ignore)
   buffer_limit = input_scrub_next_buffer (&input_line_pointer);
 }
 
+/* Switch in and out of MRI mode.  */
+
+void
+s_mri (ignore)
+     int ignore;
+{
+  int on, old_flag;
+
+  on = get_absolute_expression ();
+  old_flag = flag_mri;
+  if (on != 0)
+    {
+      flag_mri = 1;
+#ifdef TC_M68K
+      flag_m68k_mri = 1;
+#endif
+    }
+  else
+    {
+      flag_mri = 0;
+      flag_m68k_mri = 0;
+    }
+
+#ifdef MRI_MODE_CHANGE
+  if (on != old_flag)
+    MRI_MODE_CHANGE (on);
+#endif
+
+  demand_empty_rest_of_line ();
+}
+
 /* Handle changing the location counter.  */
 
 static void
-- 
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