%option nounput noyywrap

%{

/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

   Written by Steve Chamberlain of Cygnus Support.

   This file is part of the GNU Binutils.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

#include "bfd.h"

#include "safe-ctype.h"

#include "bfdlink.h"

#include "ld.h"

#include "ldmisc.h"

#include "ldexp.h"

#include "ldlang.h"

#include <ldgram.h>

#include "ldfile.h"

#include "ldlex.h"

#include "ldmain.h"

#include "libiberty.h"

/* The type of top-level parser input.

   yylex and yyparse (indirectly) both check this.  */

input_type parser_input;

/* Line number in the current input file.  */

unsigned int lineno;

/* The string we are currently lexing, or NULL if we are reading a

   file.  */

const char *lex_string = NULL;

/* Support for flex reading from more than one input file (stream).

   `include_stack' is flex's input state for each open file;

   `file_name_stack' is the file names.  `lineno_stack' is the current

   line numbers.

   If `include_stack_ptr' is 0, we haven't started reading anything yet.

   Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid.  */

#undef YY_INPUT

#define YY_INPUT(buf,result,max_size) result = yy_input (buf, max_size)

#ifndef YY_NO_UNPUT

#define YY_NO_UNPUT

#endif

#define MAX_INCLUDE_DEPTH 10

static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];

static const char *file_name_stack[MAX_INCLUDE_DEPTH];

static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];

static unsigned int sysrooted_stack[MAX_INCLUDE_DEPTH];

static unsigned int include_stack_ptr = 0;

static int vers_node_nesting = 0;

static int yy_input (char *, int);

static void comment (void);

static void lex_warn_invalid (char *where, char *what);

/* STATES

	EXPRESSION	definitely in an expression

	SCRIPT		definitely in a script

	INPUTLIST	definitely in a script, a filename-list

	BOTH		either EXPRESSION or SCRIPT

	DEFSYMEXP	in an argument to -defsym

	MRI		in an MRI script

	VERS_START	starting a Sun style mapfile

	VERS_SCRIPT	a Sun style mapfile

	VERS_NODE	a node within a Sun style mapfile

*/

#define RTOKEN(x)  {  yylval.token = x; return x; }

%}

%a 4000

%o 5000

CMDFILENAMECHAR   [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]

CMDFILENAMECHAR1  [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]

FILENAMECHAR1	[_a-zA-Z\/\.\\\$\_\~]

SYMBOLNAMECHAR1	[_a-zA-Z\/\.\\\$\_]

SYMBOLCHARN     [_a-zA-Z\/\.\\\$\_\~0-9]

FILENAMECHAR	[_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~]

WILDCHAR	[_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*\^\!]

WHITE		[ \t\n\r]+

NOCFILENAMECHAR	[_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]

V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*

V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*

%s SCRIPT

%s INPUTLIST

%s EXPRESSION

%s BOTH

%s DEFSYMEXP

%s MRI

%s VERS_START

%s VERS_SCRIPT

%s VERS_NODE

%%

  if (parser_input != input_selected)

    {

      /* The first token of the input determines the initial parser state.  */

      input_type t = parser_input;

      parser_input = input_selected;

      switch (t)

	{

	case input_script: return INPUT_SCRIPT; break;

	case input_mri_script: return INPUT_MRI_SCRIPT; break;

	case input_version_script: return INPUT_VERSION_SCRIPT; break;

	case input_dynamic_list: return INPUT_DYNAMIC_LIST; break;

	case input_defsym: return INPUT_DEFSYM; break;

	default: abort ();

	}

    }

<BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>"/*"	{ comment (); }

<DEFSYMEXP>"-"			{ RTOKEN('-');}

<DEFSYMEXP>"+"			{ RTOKEN('+');}

<DEFSYMEXP>{SYMBOLNAMECHAR1}{SYMBOLCHARN}*   { yylval.name = xstrdup (yytext); return NAME; }

<DEFSYMEXP>"="			{ RTOKEN('='); }

<MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {

				yylval.integer = bfd_scan_vma (yytext + 1, 0, 16);

				yylval.bigint.str = NULL;

				return INT;

			}

<MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) {

				   int ibase ;

				   switch (yytext[yyleng - 1]) {

				    case 'X':

				    case 'x':

				    case 'H':

				    case 'h':

				     ibase = 16;

				     break;

				    case 'O':

				    case 'o':

				     ibase = 8;

				     break;

				    case 'B':

				    case 'b':

				     ibase = 2;

				     break;

				    default:

				     ibase = 10;

				   }

				   yylval.integer = bfd_scan_vma (yytext, 0,

								  ibase);

				   yylval.bigint.str = NULL;

				   return INT;

				 }

<SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? {

				  char *s = yytext;

				  int ibase = 0;

				  if (*s == '$')

				    {

				      ++s;

				      ibase = 16;

				    }

				  yylval.integer = bfd_scan_vma (s, 0, ibase);

				  yylval.bigint.str = NULL;

				  if (yytext[yyleng - 1] == 'M'

				      || yytext[yyleng - 1] == 'm')

				    {

				      yylval.integer *= 1024 * 1024;

				    }

				  else if (yytext[yyleng - 1] == 'K'

				      || yytext[yyleng - 1]=='k')

				    {

				      yylval.integer *= 1024;

				    }

				  else if (yytext[0] == '0'

					   && (yytext[1] == 'x'

					       || yytext[1] == 'X'))

				    {

				      yylval.bigint.str = xstrdup (yytext + 2);

				    }

				  return INT;

				}

<BOTH,SCRIPT,EXPRESSION,MRI>"]"		{ RTOKEN(']');}

<BOTH,SCRIPT,EXPRESSION,MRI>"["		{ RTOKEN('[');}

<BOTH,SCRIPT,EXPRESSION,MRI>"<<="	{ RTOKEN(LSHIFTEQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>">>="	{ RTOKEN(RSHIFTEQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"||"	{ RTOKEN(OROR);}

<BOTH,SCRIPT,EXPRESSION,MRI>"=="	{ RTOKEN(EQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"!="	{ RTOKEN(NE);}

<BOTH,SCRIPT,EXPRESSION,MRI>">="	{ RTOKEN(GE);}

<BOTH,SCRIPT,EXPRESSION,MRI>"<="	{ RTOKEN(LE);}

<BOTH,SCRIPT,EXPRESSION,MRI>"<<"	{ RTOKEN(LSHIFT);}

<BOTH,SCRIPT,EXPRESSION,MRI>">>"	{ RTOKEN(RSHIFT);}

<BOTH,SCRIPT,EXPRESSION,MRI>"+="	{ RTOKEN(PLUSEQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"-="	{ RTOKEN(MINUSEQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"*="	{ RTOKEN(MULTEQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"/="	{ RTOKEN(DIVEQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"&="	{ RTOKEN(ANDEQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"|="	{ RTOKEN(OREQ);}

<BOTH,SCRIPT,EXPRESSION,MRI>"&&"	{ RTOKEN(ANDAND);}

<BOTH,SCRIPT,EXPRESSION,MRI>">"		{ RTOKEN('>');}

<BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>","		{ RTOKEN(',');}

<BOTH,SCRIPT,EXPRESSION,MRI>"&"		{ RTOKEN('&';;}

<BOTH,SCRIPT,EXPRESSION,MRI>"|"		{ RTOKEN('|');}

<BOTH,SCRIPT,EXPRESSION,MRI>"~"		{ RTOKEN('~');}

<BOTH,SCRIPT,EXPRESSION,MRI>"!"		{ RTOKEN('!');}

<BOTH,SCRIPT,EXPRESSION,MRI>"?"		{ RTOKEN('?');}

<BOTH,SCRIPT,EXPRESSION,MRI>"*"		{ RTOKEN('*');}

<BOTH,SCRIPT,EXPRESSION,MRI>"+"		{ RTOKEN('+');}

<BOTH,SCRIPT,EXPRESSION,MRI>"-"		{ RTOKEN('-');}

<BOTH,SCRIPT,EXPRESSION,MRI>"/"		{ RTOKEN('/');}

<BOTH,SCRIPT,EXPRESSION,MRI>"%"		{ RTOKEN('%');}

<BOTH,SCRIPT,EXPRESSION,MRI>"<"		{ RTOKEN('<');}

<BOTH,SCRIPT,EXPRESSION,MRI>"="		{ RTOKEN('=');}

<BOTH,SCRIPT,EXPRESSION,MRI>"}"		{ RTOKEN('}') ; }

<BOTH,SCRIPT,EXPRESSION,MRI>"{"		{ RTOKEN('{'); }

<BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>")"		{ RTOKEN(')');}

<BOTH,SCRIPT,EXPRESSION,MRI,INPUTLIST>"("		{ RTOKEN('(');}

<BOTH,SCRIPT,EXPRESSION,MRI>":"		{ RTOKEN(':'); }

<BOTH,SCRIPT,EXPRESSION,MRI>";"		{ RTOKEN(';');}

<BOTH,SCRIPT>"MEMORY"			{ RTOKEN(MEMORY);}

<BOTH,SCRIPT>"REGION_ALIAS"		{ RTOKEN(REGION_ALIAS);}

<BOTH,SCRIPT>"LD_FEATURE"		{ RTOKEN(LD_FEATURE);}

<BOTH,SCRIPT,EXPRESSION>"ORIGIN"	{ RTOKEN(ORIGIN);}

<BOTH,SCRIPT>"VERSION"			{ RTOKEN(VERSIONK);}

<EXPRESSION,BOTH,SCRIPT>"BLOCK"		{ RTOKEN(BLOCK);}

<EXPRESSION,BOTH,SCRIPT>"BIND"		{ RTOKEN(BIND);}

<BOTH,SCRIPT,EXPRESSION>"LENGTH"	{ RTOKEN(LENGTH);}

<EXPRESSION,BOTH,SCRIPT>"ALIGN"		{ RTOKEN(ALIGN_K);}

<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN"	{ RTOKEN(DATA_SEGMENT_ALIGN);}

<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END"	{ RTOKEN(DATA_SEGMENT_RELRO_END);}

<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END"	{ RTOKEN(DATA_SEGMENT_END);}

<EXPRESSION,BOTH,SCRIPT>"ADDR"		{ RTOKEN(ADDR);}

<EXPRESSION,BOTH,SCRIPT>"LOADADDR"	{ RTOKEN(LOADADDR);}

<EXPRESSION,BOTH,SCRIPT>"ALIGNOF"	{ RTOKEN(ALIGNOF); }

<EXPRESSION,BOTH>"MAX"			{ RTOKEN(MAX_K); }

<EXPRESSION,BOTH>"MIN"			{ RTOKEN(MIN_K); }

<EXPRESSION,BOTH>"LOG2CEIL"		{ RTOKEN(LOG2CEIL); }

<EXPRESSION,BOTH,SCRIPT>"ASSERT"	{ RTOKEN(ASSERT_K); }

<BOTH,SCRIPT>"ENTRY"			{ RTOKEN(ENTRY);}

<BOTH,SCRIPT,MRI>"EXTERN"		{ RTOKEN(EXTERN);}

<EXPRESSION,BOTH,SCRIPT>"NEXT"		{ RTOKEN(NEXT);}

<EXPRESSION,BOTH,SCRIPT>"sizeof_headers"	{ RTOKEN(SIZEOF_HEADERS);}

<EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"	{ RTOKEN(SIZEOF_HEADERS);}

<EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);}

<BOTH,SCRIPT>"MAP"			{ RTOKEN(MAP);}

<EXPRESSION,BOTH,SCRIPT>"SIZEOF"	{ RTOKEN(SIZEOF);}

<BOTH,SCRIPT>"TARGET"			{ RTOKEN(TARGET_K);}

<BOTH,SCRIPT>"SEARCH_DIR"		{ RTOKEN(SEARCH_DIR);}

<BOTH,SCRIPT>"OUTPUT"			{ RTOKEN(OUTPUT);}

<BOTH,SCRIPT>"INPUT"			{ RTOKEN(INPUT);}

<EXPRESSION,BOTH,SCRIPT>"GROUP"		{ RTOKEN(GROUP);}

<EXPRESSION,BOTH,SCRIPT,INPUTLIST>"AS_NEEDED"	{ RTOKEN(AS_NEEDED);}

<EXPRESSION,BOTH,SCRIPT>"DEFINED"	{ RTOKEN(DEFINED);}

<BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS"	{ RTOKEN(CREATE_OBJECT_SYMBOLS);}

<BOTH,SCRIPT>"CONSTRUCTORS"		{ RTOKEN( CONSTRUCTORS);}

<BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION"	{ RTOKEN(FORCE_COMMON_ALLOCATION);}

<BOTH,SCRIPT>"FORCE_GROUP_ALLOCATION"	{ RTOKEN(FORCE_GROUP_ALLOCATION);}

<BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);}

<BOTH,SCRIPT>"SECTIONS"			{ RTOKEN(SECTIONS);}

<BOTH,SCRIPT>"INSERT"			{ RTOKEN(INSERT_K);}

<BOTH,SCRIPT>"AFTER"			{ RTOKEN(AFTER);}

<BOTH,SCRIPT>"BEFORE"			{ RTOKEN(BEFORE);}

<BOTH,SCRIPT>"FILL"			{ RTOKEN(FILL);}

<BOTH,SCRIPT>"STARTUP"			{ RTOKEN(STARTUP);}

<BOTH,SCRIPT>"OUTPUT_FORMAT"		{ RTOKEN(OUTPUT_FORMAT);}

<BOTH,SCRIPT>"OUTPUT_ARCH"		{ RTOKEN( OUTPUT_ARCH);}

<BOTH,SCRIPT>"HLL"			{ RTOKEN(HLL);}

<BOTH,SCRIPT>"SYSLIB"			{ RTOKEN(SYSLIB);}

<BOTH,SCRIPT>"FLOAT"			{ RTOKEN(FLOAT);}

<BOTH,SCRIPT>"QUAD"			{ RTOKEN( QUAD);}

<BOTH,SCRIPT>"SQUAD"			{ RTOKEN( SQUAD);}

<BOTH,SCRIPT>"LONG"			{ RTOKEN( LONG);}

<BOTH,SCRIPT>"SHORT"			{ RTOKEN( SHORT);}

<BOTH,SCRIPT>"BYTE"			{ RTOKEN( BYTE);}

<BOTH,SCRIPT>"NOFLOAT"			{ RTOKEN(NOFLOAT);}

<EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS"	{ RTOKEN(NOCROSSREFS);}

<EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS_TO" { RTOKEN(NOCROSSREFS_TO);}

<BOTH,SCRIPT>"OVERLAY"			{ RTOKEN(OVERLAY); }

<BOTH,SCRIPT>"SORT_BY_NAME"		{ RTOKEN(SORT_BY_NAME); }

<BOTH,SCRIPT>"SORT_BY_ALIGNMENT"	{ RTOKEN(SORT_BY_ALIGNMENT); }

<BOTH,SCRIPT>"SORT"			{ RTOKEN(SORT_BY_NAME); }

<BOTH,SCRIPT>"SORT_BY_INIT_PRIORITY"	{ RTOKEN(SORT_BY_INIT_PRIORITY); }

<BOTH,SCRIPT>"SORT_NONE"		{ RTOKEN(SORT_NONE); }

<EXPRESSION,BOTH,SCRIPT>"NOLOAD"	{ RTOKEN(NOLOAD);}

<EXPRESSION,BOTH,SCRIPT>"DSECT"		{ RTOKEN(DSECT);}

<EXPRESSION,BOTH,SCRIPT>"COPY"		{ RTOKEN(COPY);}

<EXPRESSION,BOTH,SCRIPT>"INFO"		{ RTOKEN(INFO);}

<EXPRESSION,BOTH,SCRIPT>"OVERLAY"	{ RTOKEN(OVERLAY);}

<EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO"	{ RTOKEN(ONLY_IF_RO); }

<EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW"	{ RTOKEN(ONLY_IF_RW); }

<EXPRESSION,BOTH,SCRIPT>"SPECIAL"	{ RTOKEN(SPECIAL); }

<BOTH,SCRIPT>"o"			{ RTOKEN(ORIGIN);}

<BOTH,SCRIPT>"org"			{ RTOKEN(ORIGIN);}

<BOTH,SCRIPT>"l"			{ RTOKEN( LENGTH);}

<BOTH,SCRIPT>"len"			{ RTOKEN( LENGTH);}

<EXPRESSION,BOTH,SCRIPT>"INPUT_SECTION_FLAGS"	{ RTOKEN(INPUT_SECTION_FLAGS); }

<EXPRESSION,BOTH,SCRIPT>"INCLUDE"	{ RTOKEN(INCLUDE);}

<BOTH,SCRIPT>"PHDRS"			{ RTOKEN (PHDRS); }

<EXPRESSION,BOTH,SCRIPT>"AT"		{ RTOKEN(AT);}

<EXPRESSION,BOTH,SCRIPT>"ALIGN_WITH_INPUT"	{ RTOKEN(ALIGN_WITH_INPUT);}

<EXPRESSION,BOTH,SCRIPT>"SUBALIGN"	{ RTOKEN(SUBALIGN);}

<EXPRESSION,BOTH,SCRIPT>"HIDDEN"	{ RTOKEN(HIDDEN); }

<EXPRESSION,BOTH,SCRIPT>"PROVIDE"	{ RTOKEN(PROVIDE); }

<EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); }

<EXPRESSION,BOTH,SCRIPT>"KEEP"		{ RTOKEN(KEEP); }

<EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE"  { RTOKEN(EXCLUDE_FILE); }

<EXPRESSION,BOTH,SCRIPT>"CONSTANT"	{ RTOKEN(CONSTANT);}

<MRI>"#".*\n?			{ ++ lineno; }

<MRI>"\n"			{ ++ lineno;  RTOKEN(NEWLINE); }

<MRI>"*".*			{ /* Mri comment line */ }

<MRI>";".*			{ /* Mri comment line */ }

<MRI>"END"			{ RTOKEN(ENDWORD); }

<MRI>"ALIGNMOD"			{ RTOKEN(ALIGNMOD);}

<MRI>"ALIGN"			{ RTOKEN(ALIGN_K);}

<MRI>"CHIP"			{ RTOKEN(CHIP); }

<MRI>"BASE"			{ RTOKEN(BASE); }

<MRI>"ALIAS"			{ RTOKEN(ALIAS); }

<MRI>"TRUNCATE"			{ RTOKEN(TRUNCATE); }

<MRI>"LOAD"			{ RTOKEN(LOAD); }

<MRI>"PUBLIC"			{ RTOKEN(PUBLIC); }

<MRI>"ORDER"			{ RTOKEN(ORDER); }

<MRI>"NAME"			{ RTOKEN(NAMEWORD); }

<MRI>"FORMAT"			{ RTOKEN(FORMAT); }

<MRI>"CASE"			{ RTOKEN(CASE); }

<MRI>"START"			{ RTOKEN(START); }

<MRI>"LIST".*			{ RTOKEN(LIST); /* LIST and ignore to end of line */ }

<MRI>"SECT"			{ RTOKEN(SECT); }

<EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE"			{ RTOKEN(ABSOLUTE); }

<MRI>"end"			{ RTOKEN(ENDWORD); }

<MRI>"alignmod"			{ RTOKEN(ALIGNMOD);}

<MRI>"align"			{ RTOKEN(ALIGN_K);}

<MRI>"chip"			{ RTOKEN(CHIP); }

<MRI>"base"			{ RTOKEN(BASE); }

<MRI>"alias"			{ RTOKEN(ALIAS); }

<MRI>"truncate"			{ RTOKEN(TRUNCATE); }

<MRI>"load"			{ RTOKEN(LOAD); }

<MRI>"public"			{ RTOKEN(PUBLIC); }

<MRI>"order"			{ RTOKEN(ORDER); }

<MRI>"name"			{ RTOKEN(NAMEWORD); }

<MRI>"format"			{ RTOKEN(FORMAT); }

<MRI>"case"			{ RTOKEN(CASE); }

<MRI>"extern"			{ RTOKEN(EXTERN); }

<MRI>"start"			{ RTOKEN(START); }

<MRI>"list".*			{ RTOKEN(LIST); /* LIST and ignore to end of line */ }

<MRI>"sect"			{ RTOKEN(SECT); }

<EXPRESSION,BOTH,SCRIPT,MRI>"absolute"			{ RTOKEN(ABSOLUTE); }

<MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}*	{

/* Filename without commas, needed to parse mri stuff */

				 yylval.name = xstrdup (yytext);

				  return NAME;

				}

<BOTH,INPUTLIST>{FILENAMECHAR1}{FILENAMECHAR}*	{

				 yylval.name = xstrdup (yytext);

				  return NAME;

				}

<INPUTLIST>"="{FILENAMECHAR1}{FILENAMECHAR}*	{

/* Filename to be prefixed by --sysroot or when non-sysrooted, nothing.  */

				 yylval.name = xstrdup (yytext);

				  return NAME;

				}

<INPUTLIST>"$SYSROOT"{FILENAMECHAR1}{FILENAMECHAR}*	{

/* Filename to be prefixed by --sysroot or when non-sysrooted, nothing.  */

				 yylval.name = xstrdup (yytext);

				  return NAME;

				}

<BOTH,INPUTLIST>"-l"{FILENAMECHAR}+ {

				  yylval.name = xstrdup (yytext + 2);

				  return LNAME;

				}

<EXPRESSION>{SYMBOLNAMECHAR1}{NOCFILENAMECHAR}*	{

				 yylval.name = xstrdup (yytext);

				  return NAME;

				}

<EXPRESSION>"-l"{NOCFILENAMECHAR}+ {

				  yylval.name = xstrdup (yytext + 2);

				  return LNAME;

				}

<SCRIPT>{WILDCHAR}* {

		/* Annoyingly, this pattern can match comments, and we have

		   longest match issues to consider.  So if the first two

		   characters are a comment opening, put the input back and

		   try again.  */

		if (yytext[0] == '/' && yytext[1] == '*')

		  {

		    yyless (2);

		    comment ();

		  }

		else

		  {

		    yylval.name = xstrdup (yytext);

		    return NAME;

		  }

	}

<EXPRESSION,BOTH,SCRIPT,VERS_NODE,INPUTLIST>"\""[^\"]*"\"" {

					/* No matter the state, quotes

					   give what's inside.  */

					bfd_size_type len;

					yylval.name = xstrdup (yytext + 1);

					/* PR ld/20906.  A corrupt input file

					   can contain bogus strings.  */

					len = strlen (yylval.name);

					if (len > yyleng - 2)

					  len = yyleng - 2;

					yylval.name[len] = 0;

					return NAME;

				}

<BOTH,SCRIPT,EXPRESSION>"\n"		{ lineno++;}

<MRI,BOTH,SCRIPT,EXPRESSION>[ \t\r]+	{ }

<VERS_NODE,VERS_SCRIPT>[:,;]	{ return *yytext; }

<VERS_NODE>global		{ RTOKEN(GLOBAL); }

<VERS_NODE>local		{ RTOKEN(LOCAL); }

<VERS_NODE>extern		{ RTOKEN(EXTERN); }

<VERS_NODE>{V_IDENTIFIER}	{ yylval.name = xstrdup (yytext);

				  return VERS_IDENTIFIER; }

<VERS_SCRIPT>{V_TAG}		{ yylval.name = xstrdup (yytext);

				  return VERS_TAG; }

<VERS_START>"{"			{ BEGIN(VERS_SCRIPT); return *yytext; }

<VERS_SCRIPT>"{"		{ BEGIN(VERS_NODE);

				  vers_node_nesting = 0;

				  return *yytext;

				}

<VERS_SCRIPT>"}"		{ return *yytext; }

<VERS_NODE>"{"			{ vers_node_nesting++; return *yytext; }

<VERS_NODE>"}"			{ if (--vers_node_nesting < 0)

				    BEGIN(VERS_SCRIPT);

				  return *yytext;

				}

<VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[\n]	{ lineno++; }

<VERS_START,VERS_NODE,VERS_SCRIPT>#.*		{ /* Eat up comments */ }

<VERS_START,VERS_NODE,VERS_SCRIPT,INPUTLIST>[ \t\r]+	{ /* Eat up whitespace */ }

<<EOF>> {

  include_stack_ptr--;

  if (include_stack_ptr == 0)

    {

      lineno = 0;

      yyterminate ();

    }

  else

    yy_switch_to_buffer (include_stack[include_stack_ptr]);

  lineno = lineno_stack[include_stack_ptr];

  input_flags.sysrooted = sysrooted_stack[include_stack_ptr];

  return END;

}

<SCRIPT,MRI,VERS_START,VERS_SCRIPT,VERS_NODE>.	lex_warn_invalid (" in script", yytext);

<EXPRESSION,DEFSYMEXP,BOTH>.	lex_warn_invalid (" in expression", yytext);

%%

/* Switch flex to reading script file NAME, open on FILE,

   saving the current input info on the include stack.  */

void

lex_push_file (FILE *file, const char *name, unsigned int sysrooted)

{

  if (include_stack_ptr >= MAX_INCLUDE_DEPTH)

    {

      einfo (_("%F:includes nested too deeply\n"));

    }

  file_name_stack[include_stack_ptr] = name;

  lineno_stack[include_stack_ptr] = lineno;

  sysrooted_stack[include_stack_ptr] = input_flags.sysrooted;

  include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;

  include_stack_ptr++;

  lineno = 1;

  input_flags.sysrooted = sysrooted;

  yyin = file;

  yy_switch_to_buffer (yy_create_buffer (yyin, YY_BUF_SIZE));

}

/* Return a newly created flex input buffer containing STRING,

   which is SIZE bytes long.  */

static YY_BUFFER_STATE

yy_create_string_buffer (const char *string, size_t size)

{

  YY_BUFFER_STATE b;

  /* Calls to m-alloc get turned by sed into xm-alloc.  */

  b = malloc (sizeof (struct yy_buffer_state));

  b->yy_input_file = 0;

  b->yy_buf_size = size;

  /* yy_ch_buf has to be 2 characters longer than the size given because

     we need to put in 2 end-of-buffer characters.  */

  b->yy_ch_buf = malloc ((unsigned) (b->yy_buf_size + 3));

  b->yy_ch_buf[0] = '\n';

  strcpy (b->yy_ch_buf+1, string);

  b->yy_ch_buf[size+1] = YY_END_OF_BUFFER_CHAR;

  b->yy_ch_buf[size+2] = YY_END_OF_BUFFER_CHAR;

  b->yy_n_chars = size+1;

  b->yy_buf_pos = &b->yy_ch_buf[1];

  b->yy_is_our_buffer = 1;

  b->yy_is_interactive = 0;

  b->yy_at_bol = 1;

  b->yy_fill_buffer = 0;

  /* flex 2.4.7 changed the interface.  FIXME: We should not be using

     a flex internal interface in the first place!  */

#ifdef YY_BUFFER_NEW

  b->yy_buffer_status = YY_BUFFER_NEW;

#else

  b->yy_eof_status = EOF_NOT_SEEN;

#endif

  return b;

}

/* Switch flex to reading from STRING, saving the current input info

   on the include stack.  */

void

lex_redirect (const char *string, const char *fake_filename, unsigned int count)

{

  YY_BUFFER_STATE tmp;

  yy_init = 0;

  if (include_stack_ptr >= MAX_INCLUDE_DEPTH)

    {

      einfo (_("%F: macros nested too deeply\n"));

    }

  file_name_stack[include_stack_ptr] = fake_filename;

  lineno_stack[include_stack_ptr] = lineno;

  include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;

  include_stack_ptr++;

  lineno = count;

  tmp = yy_create_string_buffer (string, strlen (string));

  yy_switch_to_buffer (tmp);

}

/* Functions to switch to a different flex start condition,

   saving the current start condition on `state_stack'.  */

static int state_stack[MAX_INCLUDE_DEPTH * 2];

static int *state_stack_p = state_stack;

void

ldlex_script (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (SCRIPT);

}

void

ldlex_inputlist (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (INPUTLIST);

}

void

ldlex_mri_script (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (MRI);

}

void

ldlex_version_script (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (VERS_START);

}

void

ldlex_version_file (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (VERS_SCRIPT);

}

void

ldlex_defsym (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (DEFSYMEXP);

}

void

ldlex_expression (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (EXPRESSION);

}

void

ldlex_both (void)

{

  *(state_stack_p)++ = yy_start;

  BEGIN (BOTH);

}

void

ldlex_popstate (void)

{

  yy_start = *(--state_stack_p);

}

/* Return the current file name, or the previous file if no file is

   current.  */

const char*

ldlex_filename (void)

{

  return file_name_stack[include_stack_ptr - (include_stack_ptr != 0)];

}

/* Place up to MAX_SIZE characters in BUF and return

   either the number of characters read, or 0 to indicate EOF.  */

static int

yy_input (char *buf, int max_size)

{

  int result = 0;

  if (YY_CURRENT_BUFFER->yy_input_file)

    {

      if (yyin)

	{

	  result = fread (buf, 1, max_size, yyin);

	  if (result < max_size && ferror (yyin))

	    einfo (_("%F%P: read in flex scanner failed\n"));

	}

    }

  return result;

}

/* Eat the rest of a C-style comment.  */

static void

comment (void)

{

  int c;

  while (1)

    {

      c = input();

      while (c != '*' && c != EOF)

	{

	  if (c == '\n')

	    lineno++;

	  c = input();

	}

      if (c == '*')

	{

	  c = input();

	  while (c == '*')

	    c = input();

	  if (c == '/')

	    break;			/* found the end */

	}

      if (c == '\n')

	lineno++;

      if (c == EOF)

	{

	  einfo (_("%F%P: EOF in comment\n"));

	  break;

	}

    }

}

/* Warn the user about a garbage character WHAT in the input

   in context WHERE.  */

static void

lex_warn_invalid (char *where, char *what)

{

  char buf[5];

  /* If we have found an input file whose format we do not recognize,

     and we are therefore treating it as a linker script, and we find

     an invalid character, then most likely this is a real object file

     of some different format.  Treat it as such.  */

  if (ldfile_assumed_script)

    {

      bfd_set_error (bfd_error_file_not_recognized);

      einfo (_("%F%s: file not recognized: %E\n"), ldlex_filename ());

    }

  if (! ISPRINT (*what))

    {

      sprintf (buf, "\\%03o", *(unsigned char *) what);

      what = buf;

    }

  einfo (_("%P:%S: ignoring invalid character `%s'%s\n"), NULL, what, where);

}