* itbl-ops.c: New file. Add support for dynamically read

	instruction registers, opcodes and formats.  Build internal table
	for new instructions and provide callbacks for assembler and
	disassembler.
	* itbl-lex.l, itbl-parse.y: Lex and yacc parsers for instruction
	spec table.
	* itbl-ops.h: New file.  Header file for itbl support.
	* config/itbl-mips.h: New file.  Mips specific definitions for
	itbl support.

1 files changed, 86 insertions, 0 deletions

diff --git a/gas/itbl-lex.l b/gas/itbl-lex.l
new file mode 100644
index 0000000000..8c1e8e4313
--- /dev/null
+++ b/gas/itbl-lex.l
@@ -0,0 +1,86 @@
+%{
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include "itbl-parse.h"
+
+#ifdef DEBUG
+#define DBG(x) printf x
+#define MDBG(x) printf x
+#else
+#define DBG(x)
+#define MDBG(x)
+#endif
+
+int insntbl_line = 1;
+%}
+
+ALNUM	[A-Za-z0-9_]
+DIGIT	[0-9]
+ALPHA	[A-Za-z_]
+HEX	[0-9A-Fa-f]
+
+%%
+
+"creg"|"CREG"	{
+		return CREG;
+		}
+"dreg"|"DREG"	{
+		return DREG;
+		}
+"greg"|"GREG"	{
+		return GREG;
+		}
+"immed"|"IMMED"	{
+		return IMMED;
+		}
+"addr"|"ADDR"	{
+		return ADDR;
+		}
+"insn"|"INSN"	{
+		return INSN;
+		}
+"p"{DIGIT} {
+		yytext[yyleng]=0;
+		yylval.processor = strtoul(yytext+1,0,0);
+		return PNUM;
+		}
+{DIGIT}+	{
+		yytext[yyleng]=0;
+		yylval.num = strtoul(yytext,0,0);
+		return NUM;
+		}
+"0x"{HEX}+	{
+		yytext[yyleng]=0;
+		yylval.num = strtoul(yytext,0,0);
+		return NUM;
+		}
+{ALPHA}{ALNUM}*	{
+		yytext[yyleng]=0;
+		yylval.str = strdup(yytext);
+		return ID;
+		}
+";"|"#"	{
+		int c;
+		while ((c = input()) != EOF) {
+		    if (c == '\n') 
+			{
+				unput(c);
+				break;
+			}
+		}
+		}
+"\n"	{ 
+		insntbl_line++; 
+		MDBG(("in lex, NL=%d (x%x)\n",NL,NL));
+		return NL; 
+		}
+" "|"\t"	{ }
+.		{
+		MDBG(("char=%x,%d\n",yytext[0],yytext[0]));
+		return yytext[0];
+		}
+%%
+
+int yywrap() { return 1; }