exolex.cc

linux下基于c++的处理器仿真平台。具有处理器流水线

 *
 *    A. it is accompanied by the corresponding machine-readable
 *       source code,
 *    B. it is accompanied by a written offer, with no time limit,
 *       to give anyone a machine-readable copy of the corresponding
 *       source code in return for reimbursement of the cost of
 *       distribution.  This written offer must permit verbatim
 *       duplication by anyone, or
 *    C. it is distributed by someone who received only the
 *       executable form, and is accompanied by a copy of the
 *       written offer of source code that they received concurrently.
 *
 * In other words, you are welcome to use, share and improve this
 * source file.  You are forbidden to forbid anyone else to use, share
 * and improve what you give them.
 *
 * INTERNET: [e-mail]
 * US Mail:  1210 W. Dayton Street, Madison, WI 53706
 *
 */
#line 56 "/z/stever/bk/m5/eio/exolex.l"
/* C-style lexor. */

#include <stdio.h>
#include <stdlib.h>

#include "base/misc.hh"
#include "encumbered/eio/libexo.h"
#include "sim/host.hh"

/* maximum size token (including strings) for lex */
#undef YYLMAX
#define YYLMAX	(16*1024)

/* disable interactive features, as they are non-portable */
#define YY_NEVER_INTERACTIVE	1
#define YY_ALWAYS_INTERACTIVE	0

#define YY_MAIN		0
#define YY_STACK_USED	0

unsigned line = 1;		/* line of last recognized token */

static void lex_eat_comment(void);

#define BLOB_MODE 1

#line 509 "lex.yy.c"

/* Macros after this point can all be overridden by user definitions in
 * section 1.
 */

#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int yywrap YY_PROTO(( void ));
#else
extern int yywrap YY_PROTO(( void ));
#endif
#endif

#ifndef YY_NO_UNPUT
static void yyunput YY_PROTO(( int c, char *buf_ptr ));
#endif

#ifndef yytext_ptr
static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen YY_PROTO(( yyconst char * ));
#endif

#ifndef YY_NO_INPUT
#ifdef __cplusplus
static int yyinput YY_PROTO(( void ));
#else
static int input YY_PROTO(( void ));
#endif
#endif

#if YY_STACK_USED
static int yy_start_stack_ptr = 0;
static int yy_start_stack_depth = 0;
static int *yy_start_stack = 0;
#ifndef YY_NO_PUSH_STATE
static void yy_push_state YY_PROTO(( int new_state ));
#endif
#ifndef YY_NO_POP_STATE
static void yy_pop_state YY_PROTO(( void ));
#endif
#ifndef YY_NO_TOP_STATE
static int yy_top_state YY_PROTO(( void ));
#endif

#else
#define YY_NO_PUSH_STATE 1
#define YY_NO_POP_STATE 1
#define YY_NO_TOP_STATE 1
#endif

#ifdef YY_MALLOC_DECL
YY_MALLOC_DECL
#else
#if __STDC__
#ifndef __cplusplus
#include <stdlib.h>
#endif
#else
/* Just try to get by without declaring the routines.  This will fail
 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
 * or sizeof(void*) != sizeof(int).
 */
#endif
#endif

/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif

/* Copy whatever the last rule matched to the standard output. */

#ifndef ECHO
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
#endif

/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#ifndef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
	if ( yy_current_buffer->yy_is_interactive ) \
		{ \
		int c = '*', n; \
		for ( n = 0; n < max_size && \
			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
			buf[n] = (char) c; \
		if ( c == '\n' ) \
			buf[n++] = (char) c; \
		if ( c == EOF && ferror( yyin ) ) \
			YY_FATAL_ERROR( "input in flex scanner failed" ); \
		result = n; \
		} \
	else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
		  && ferror( yyin ) ) \
		YY_FATAL_ERROR( "input in flex scanner failed" );
#endif

/* No semi-colon after return; correct usage is to write "yyterminate();" -
 * we don't want an extra ';' after the "return" because that will cause
 * some compilers to complain about unreachable statements.
 */
#ifndef yyterminate
#define yyterminate() return YY_NULL
#endif

/* Number of entries by which start-condition stack grows. */
#ifndef YY_START_STACK_INCR
#define YY_START_STACK_INCR 25
#endif

/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
#endif

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL int yylex YY_PROTO(( void ))
#endif

/* Code executed at the beginning of each rule, after yytext and yyleng
 * have been set up.
 */
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif

/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK break;
#endif

#define YY_RULE_SETUP \
	YY_USER_ACTION

YY_DECL
	{
	register yy_state_type yy_current_state;
	register char *yy_cp = NULL, *yy_bp = NULL;
	register int yy_act;

#line 93 "/z/stever/bk/m5/eio/exolex.l"


#line 663 "lex.yy.c"

	if ( yy_init )
		{
		yy_init = 0;

#ifdef YY_USER_INIT
		YY_USER_INIT;
#endif

		if ( ! yy_start )
			yy_start = 1;	/* first start state */

		if ( ! yyin )
			yyin = stdin;

		if ( ! yyout )
			yyout = stdout;

		if ( ! yy_current_buffer )
			yy_current_buffer =
				yy_create_buffer( yyin, YY_BUF_SIZE );

		yy_load_buffer_state();
		}

	while ( 1 )		/* loops until end-of-file is reached */
		{
		yy_cp = yy_c_buf_p;

		/* Support of yytext. */
		*yy_cp = yy_hold_char;

		/* yy_bp points to the position in yy_ch_buf of the start of
		 * the current run.
		 */
		yy_bp = yy_cp;

		yy_current_state = yy_start;
yy_match:
		do
			{
			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
			if ( yy_accept[yy_current_state] )
				{
				yy_last_accepting_state = yy_current_state;
				yy_last_accepting_cpos = yy_cp;
				}
			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
				{
				yy_current_state = (int) yy_def[yy_current_state];
				if ( yy_current_state >= 60 )
					yy_c = yy_meta[(unsigned int) yy_c];
				}
			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
			++yy_cp;
			}
		while ( yy_base[yy_current_state] != 178 );

yy_find_action:
		yy_act = yy_accept[yy_current_state];
		if ( yy_act == 0 )
			{ /* have to back up */
			yy_cp = yy_last_accepting_cpos;
			yy_current_state = yy_last_accepting_state;
			yy_act = yy_accept[yy_current_state];
			}

		YY_DO_BEFORE_ACTION;


do_action:	/* This label is used only to access EOF actions. */


		switch ( yy_act )
	{ /* beginning of action switch */
			case 0: /* must back up */
			/* undo the effects of YY_DO_BEFORE_ACTION */
			*yy_cp = yy_hold_char;
			yy_cp = yy_last_accepting_cpos;
			yy_current_state = yy_last_accepting_state;
			goto yy_find_action;

case 1:
YY_RULE_SETUP
#line 95 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_byte; }
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 97 "/z/stever/bk/m5/eio/exolex.l"
{ lex_eat_comment(); }
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 99 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_address; }
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 100 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_integer; }
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 101 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_integer; }
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 103 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_float; }
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 104 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_float; }
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 105 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_float; }
	YY_BREAK
case 9:
YY_RULE_SETUP
#line 107 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_char; }
	YY_BREAK
case 10:
YY_RULE_SETUP
#line 109 "/z/stever/bk/m5/eio/exolex.l"
/*"*/	{ return lex_string; }
	YY_BREAK
case 11:
YY_RULE_SETUP
#line 111 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_token; }
	YY_BREAK
case 12:
YY_RULE_SETUP
#line 113 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_token; }
	YY_BREAK
case 13:
YY_RULE_SETUP
#line 115 "/z/stever/bk/m5/eio/exolex.l"
{ return '{'; }
	YY_BREAK
case 14:
YY_RULE_SETUP
#line 116 "/z/stever/bk/m5/eio/exolex.l"
{ return '}'; }
	YY_BREAK
case 15:
YY_RULE_SETUP
#line 117 "/z/stever/bk/m5/eio/exolex.l"
{ return ','; }
	YY_BREAK
case 16:
YY_RULE_SETUP
#line 118 "/z/stever/bk/m5/eio/exolex.l"
{ return '('; }
	YY_BREAK
case 17:
YY_RULE_SETUP
#line 119 "/z/stever/bk/m5/eio/exolex.l"
{ return ')'; }
	YY_BREAK
case 18:
YY_RULE_SETUP
#line 120 "/z/stever/bk/m5/eio/exolex.l"
{ return '['; }
	YY_BREAK
case 19:
YY_RULE_SETUP
#line 121 "/z/stever/bk/m5/eio/exolex.l"
{ return ']'; }
	YY_BREAK
case 20:
YY_RULE_SETUP
#line 122 "/z/stever/bk/m5/eio/exolex.l"
{ BEGIN(BLOB_MODE); return '<'; }
	YY_BREAK
case 21:
YY_RULE_SETUP
#line 123 "/z/stever/bk/m5/eio/exolex.l"
{ BEGIN(INITIAL); return '>'; }
	YY_BREAK
case 22:
YY_RULE_SETUP
#line 125 "/z/stever/bk/m5/eio/exolex.l"
{ /* nada */; }
	YY_BREAK
case 23:
YY_RULE_SETUP
#line 126 "/z/stever/bk/m5/eio/exolex.l"
{ line++; }
	YY_BREAK
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(BLOB_MODE):
#line 127 "/z/stever/bk/m5/eio/exolex.l"
{ return lex_eof; }
	YY_BREAK
case 24:
YY_RULE_SETUP
#line 128 "/z/stever/bk/m5/eio/exolex.l"
{ /* bogus char */
					  fatal("bogus character in input"); }
	YY_BREAK
case 25:
YY_RULE_SETUP
#line 131 "/z/stever/bk/m5/eio/exolex.l"
ECHO;
	YY_BREAK
#line 877 "lex.yy.c"

	case YY_END_OF_BUFFER:
		{
		/* Amount of text matched not including the EOB char. */
		int yy_amount_of_matched_text = (int) (yy_cp - yytext_ptr) - 1;

		/* Undo the effects of YY_DO_BEFORE_ACTION. */
		*yy_cp = yy_hold_char;
		YY_RESTORE_YY_MORE_OFFSET

		if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_NEW )
			{
			/* We're scanning a new file or input source.  It's
			 * possible that this happened because the user
			 * just pointed yyin at a new source and called
			 * yylex().  If so, then we have to assure
			 * consistency between yy_current_buffer and our
			 * globals.  Here is the right place to do so, because
			 * this is the first action (other than possibly a
			 * back-up) that will match for the new input source.
			 */
			yy_n_chars = yy_current_buffer->yy_n_chars;
			yy_current_buffer->yy_input_file = yyin;
			yy_current_buffer->yy_buffer_status = YY_BUFFER_NORMAL;
			}

		/* Note that here we test for yy_c_buf_p "<=" to the position
		 * of the first EOB in the buffer, since yy_c_buf_p will
		 * already have been incremented past the NUL character
		 * (since all states make transitions on EOB to the
		 * end-of-buffer state).  Contrast this with the test
		 * in input().
		 */
		if ( yy_c_buf_p <= &yy_current_buffer->yy_ch_buf[yy_n_chars] )
			{ /* This was really a NUL. */
			yy_state_type yy_next_state;

			yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;

			yy_current_state = yy_get_previous_state();

			/* Okay, we're now positioned to make the NUL
			 * transition.  We couldn't have