[PATCH] x86: Intel mode opcode prefix handling

["Jan Beulich" <JBeulich at novell dot com>]

This supresses acceptance of the AT&T style prefix separator in Intel mode,
and adds the MASM-style prefixes ht/hnt to complement (yet again in Intel
mode) the GNU AT&T extensions of suffixing branches with ,pt or ,pn.

Built and tested on i686-pc-linux-gnu and x86_64-unknown-linux-gnu.

Jan

gas/
2005-05-06  Jan Beulich  <jbeulich@novell.com>

	* config/tc-i386.c (parse_insn): Disallow use of prefix separator
	and comma in Intel mode.

include/opcode/
2005-05-06  Jan Beulich  <jbeulich@novell.com>

	* i386.h (i386_optab): Add ht and hnt.

--- /home/jbeulich/src/binutils/mainline/2005-05-06/gas/config/tc-i386.c	2005-05-06 08:24:28.000000000 +0200
+++ 2005-05-06/gas/config/tc-i386.c	2005-05-06 11:45:55.861726528 +0200
@@ -1606,8 +1606,9 @@ parse_insn (line, mnemonic)
 	}
       if (!is_space_char (*l)
 	  && *l != END_OF_INSN
-	  && *l != PREFIX_SEPARATOR
-	  && *l != ',')
+	  && (intel_syntax
+	      || (*l != PREFIX_SEPARATOR
+		  && *l != ',')))
 	{
 	  as_bad (_("invalid character %s in mnemonic"),
 		  output_invalid (*l));
@@ -1615,7 +1616,7 @@ parse_insn (line, mnemonic)
 	}
       if (token_start == l)
 	{
-	  if (*l == PREFIX_SEPARATOR)
+	  if (!intel_syntax && *l == PREFIX_SEPARATOR)
 	    as_bad (_("expecting prefix; got nothing"));
 	  else
 	    as_bad (_("expecting mnemonic; got nothing"));
--- /home/jbeulich/src/binutils/mainline/2005-05-06/include/opcode/i386.h	2005-04-19 08:42:12.000000000 +0200
+++ 2005-05-06/include/opcode/i386.h	2005-05-06 11:46:07.741920464 +0200
@@ -876,6 +876,8 @@ static const template i386_optab[] =
 {"repz",   0,	0xf3, X, 0,	 NoSuf|IsPrefix,	{ 0, 0, 0} },
 {"repne",  0,	0xf2, X, 0,	 NoSuf|IsPrefix,	{ 0, 0, 0} },
 {"repnz",  0,	0xf2, X, 0,	 NoSuf|IsPrefix,	{ 0, 0, 0} },
+{"ht",	   0,	0x3e, X, 0,	 NoSuf|IsPrefix,	{ 0, 0, 0} },
+{"hnt",	   0,	0x2e, X, 0,	 NoSuf|IsPrefix,	{ 0, 0, 0} },
 {"rex",    0,	0x40, X, Cpu64,	 NoSuf|IsPrefix,	{ 0, 0, 0} },
 {"rexz",   0,	0x41, X, Cpu64,	 NoSuf|IsPrefix,	{ 0, 0, 0} },
 {"rexy",   0,	0x42, X, Cpu64,	 NoSuf|IsPrefix,	{ 0, 0, 0} },

Attachment: binutils-mainline-x86-intel-prefix.patch
Description: Text document