From c54b5932c549afd2a2b2343ff57f365796237a40 Mon Sep 17 00:00:00 2001
From: DJ Delorie <dj@redhat.com>
Date: Fri, 18 Jul 2008 22:25:07 +0000
Subject: * config/tc-m32c.h (H_TICK_HEX): Define. * config/tc-m32c.c
 (OPTION_H_TICK_HEX): Define. (md_longopts): Add support for it.
 (md_parse_option): Likewise. * doc/as.texinfo (Overview): Add new m32c
 options. * doc/c-m32c.texi (M32C-Modifiers): Likewise

* as.h: (enable_h_tick_hex): New.
* app.c (enable_h_tick_hex): New.
(LEX_IS_H): New.
(do_scrub_begin): Mark 'H' and 'h' as special if enable_h_tick_hex.
(do_scrub_chars): If enable_h_tick_hex and 'h', check for H'00
style hex constants and convert the input stream to 0x00 style.
(do_scrub_chars): If a 'X style character constant is found after
a symbol character (like you're or X'00), warn the user.
---
 gas/app.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

(limited to 'gas/app.c')

diff --git a/gas/app.c b/gas/app.c
index 8884d9be82..6fa604fa83 100644
--- a/gas/app.c
+++ b/gas/app.c
@@ -34,6 +34,10 @@
 #endif
 #endif
 
+#ifdef H_TICK_HEX
+int enable_h_tick_hex = 0;
+#endif
+
 #ifdef TC_M68K
 /* Whether we are scrubbing in m68k MRI mode.  This is different from
    flag_m68k_mri, because the two flags will be affected by the .mri
@@ -78,6 +82,9 @@ static const char symbol_chars[] =
 #define LEX_IS_DOUBLEBAR_1ST		13
 #endif
 #define LEX_IS_PARALLEL_SEPARATOR	14
+#ifdef H_TICK_HEX
+#define LEX_IS_H			15
+#endif
 #define IS_SYMBOL_COMPONENT(c)		(lex[c] == LEX_IS_SYMBOL_COMPONENT)
 #define IS_WHITESPACE(c)		(lex[c] == LEX_IS_WHITESPACE)
 #define IS_LINE_SEPARATOR(c)		(lex[c] == LEX_IS_LINE_SEPARATOR)
@@ -190,6 +197,14 @@ do_scrub_begin (int m68k_mri ATTRIBUTE_UNUSED)
   /* Must do this is we want VLIW instruction with "->" or "<-".  */
   lex['-'] = LEX_IS_SYMBOL_COMPONENT;
 #endif
+
+#ifdef H_TICK_HEX
+  if (enable_h_tick_hex)
+    {
+      lex['h'] = LEX_IS_H;
+      lex['H'] = LEX_IS_H;
+    }
+#endif
 }
 
 /* Saved state of the scrubber.  */
@@ -1009,6 +1024,14 @@ do_scrub_chars (int (*get) (char *, int), char *tostart, int tolen)
 
 #ifndef IEEE_STYLE
 	case LEX_IS_ONECHAR_QUOTE:
+	  if (state == 9)
+	    {
+	      char c;
+
+	      c = GET ();
+	      as_warn ("'%c found after symbol", c);
+	      UNGET (c);
+	    }
 	  if (state == 10)
 	    {
 	      /* Preserve the whitespace in foo 'b'.  */
@@ -1254,6 +1277,26 @@ do_scrub_chars (int (*get) (char *, int), char *tostart, int tolen)
 	  PUT ('\n');
 	  break;
 
+#ifdef H_TICK_HEX
+	case LEX_IS_H:
+	  /* Look for strings like H'[0-9A-Fa-f] and if found, replace
+	     the H' with 0x to make them gas-style hex characters.  */
+	  if (enable_h_tick_hex)
+	    {
+	      char quot;
+
+	      quot = GET ();
+	      if (quot == '\'')
+		{
+		  UNGET ('x');
+		  ch = '0';
+		}
+	      else
+		UNGET (quot);
+	    }
+	  /* FALL THROUGH */
+#endif
+
 	case LEX_IS_SYMBOL_COMPONENT:
 	  if (state == 10)
 	    {
-- 
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