Initial import of GNU binutils version 2.8.1. Believe it or not,

this is heavily stripped down.

1 files changed, 633 insertions, 0 deletions

diff --git a/contrib/binutils/ld/ldlex.l b/contrib/binutils/ld/ldlex.l
new file mode 100644
index 0000000..60089c6
--- /dev/null
+++ b/contrib/binutils/ld/ldlex.l
@@ -0,0 +1,633 @@
+%{
+
+/* Copyright (C) 1991, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.
+
+This file is part of GLD, the Gnu Linker.
+
+GLD 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 2, or (at your option)
+any later version.
+
+GLD 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 GLD; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+/*
+This was written by steve chamberlain
+                    sac@cygnus.com
+*/
+
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#ifdef MPW
+/* Prevent enum redefinition problems. */
+#define TRUE_FALSE_ALREADY_DEFINED
+#endif /* MPW */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "ld.h"
+#include "ldgram.h"
+#include "ldmisc.h"
+#include "ldexp.h"
+#include "ldlang.h"
+#include "ldfile.h"
+#include "ldlex.h"
+#include "ldmain.h"
+
+/* The type of top-level parser input.
+   yylex and yyparse (indirectly) both check this.  */
+input_type parser_input;
+
+/* Radix to use for bfd_scan_vma -- 0 (default to base 10) or 16.  */
+int hex_mode;
+
+/* Line number in the current input file.
+   (FIXME Actually, it doesn't appear to get reset for each file?)  */
+unsigned int lineno = 1;
+
+/* 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) yy_input(buf, &result, max_size)
+
+#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 include_stack_ptr = 0;
+
+static YY_BUFFER_STATE yy_create_string_buffer PARAMS ((const char *string,
+							size_t size));
+static void yy_input PARAMS ((char *, int *result, int max_size));
+
+static void comment PARAMS ((void));
+static void lex_warn_invalid PARAMS ((char *where, char *what));
+
+/* STATES 
+	EXPRESSION	definitely in an expression
+	SCRIPT		definitely in a script
+	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; }
+
+/* Some versions of flex want this.  */
+#ifndef yywrap
+int yywrap () { return 1; }
+#endif
+%}
+
+%a 4000
+%o 5000
+
+CMDFILENAMECHAR   [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]
+CMDFILENAMECHAR1  [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]
+FILENAMECHAR1	[_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 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_defsym: return INPUT_DEFSYM; break;
+	default: abort ();
+	}
+    }
+
+<BOTH,SCRIPT,EXPRESSION>"/*"	{ comment(); }
+
+
+<DEFSYMEXP>"-"                  { RTOKEN('-');}
+<DEFSYMEXP>"+"                  { RTOKEN('+');}
+<DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}*   { yylval.name = buystring(yytext); return NAME; }
+<DEFSYMEXP>"="                  { RTOKEN('='); }
+
+<MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
+  				yylval.integer = bfd_scan_vma (yytext+1, 0,16);
+				return INT;
+			}
+
+<MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) {
+				   int ibase ;
+				   switch (yytext[yyleng-1]) {
+				    case 'X': 
+				    case 'x':
+				    case 'H':
+				    case 'h':
+				     ibase = 16;
+				     break;
+				    case 'O':
+				    case 'o':
+				     ibase = 8;
+				     break;
+				    case 'B':
+				    case 'b':
+				     ibase = 2;
+				     break;
+				    default:
+				     ibase = 10;
+				   }
+				   yylval.integer = bfd_scan_vma (yytext, 0,
+								  ibase);
+				   return INT;
+				 }
+<SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>"$"?"0x"?([0-9A-Fa-f])+(M|K|m|k)? {
+				  yylval.integer = bfd_scan_vma (yytext, 0,
+								 hex_mode);
+				  if (yytext[yyleng-1]=='M'
+					|| yytext[yyleng-1] == 'm') {
+				      yylval.integer *= 1024*1024;
+				    }	
+				  if (yytext[yyleng-1]=='K' 
+				|| yytext[yyleng-1]=='k') {
+				      yylval.integer *= 1024;
+				    }		
+				  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>","		{ 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>")"			{ RTOKEN(')');}
+<BOTH,SCRIPT,EXPRESSION,MRI>"("			{ RTOKEN('(');}
+<BOTH,SCRIPT,EXPRESSION,MRI>":"		{ RTOKEN(':'); }
+<BOTH,SCRIPT,EXPRESSION,MRI>";"		{ RTOKEN(';');}
+<BOTH,SCRIPT>"MEMORY"		{ RTOKEN(MEMORY);}
+<BOTH,SCRIPT>"ORIGIN"		{ RTOKEN(ORIGIN);}
+<BOTH,SCRIPT>"VERSION"		{ RTOKEN(VERSION);}
+<EXPRESSION,BOTH,SCRIPT>"BLOCK"		{ RTOKEN(BLOCK);}
+<EXPRESSION,BOTH,SCRIPT>"BIND"		{ RTOKEN(BIND);}
+<BOTH,SCRIPT>"LENGTH"		{ RTOKEN(LENGTH);}
+<EXPRESSION,BOTH,SCRIPT>"ALIGN"			{ RTOKEN(ALIGN_K);}
+<EXPRESSION,BOTH,SCRIPT>"ADDR"			{ RTOKEN(ADDR);}
+<EXPRESSION,BOTH,SCRIPT>"LOADADDR"		{ RTOKEN(LOADADDR);}
+<EXPRESSION,BOTH>"MAX"			{ RTOKEN(MAX); }
+<EXPRESSION,BOTH>"MIN"			{ RTOKEN(MIN); }
+<BOTH,SCRIPT>"ENTRY"			{ RTOKEN(ENTRY);}
+<EXPRESSION,BOTH,SCRIPT>"NEXT"			{ RTOKEN(NEXT);}
+<EXPRESSION,BOTH,SCRIPT>"sizeof_headers"	{ RTOKEN(SIZEOF_HEADERS);}
+<EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS"	{ RTOKEN(SIZEOF_HEADERS);}
+<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>"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>"SECTIONS"		{ RTOKEN(SECTIONS);}
+<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>"LONG"			{ RTOKEN( LONG);}
+<BOTH,SCRIPT>"SHORT"			{ RTOKEN( SHORT);}
+<BOTH,SCRIPT>"BYTE"			{ RTOKEN( BYTE);}
+<BOTH,SCRIPT>"NOFLOAT"		{ RTOKEN(NOFLOAT);}
+<EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS"	{ RTOKEN(NOCROSSREFS);}
+<BOTH,SCRIPT>"OVERLAY"			{ RTOKEN(OVERLAY); }
+<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);}
+<BOTH,SCRIPT>"o"			{ RTOKEN(ORIGIN);}
+<BOTH,SCRIPT>"org"			{ RTOKEN(ORIGIN);}
+<BOTH,SCRIPT>"l"			{ RTOKEN( LENGTH);}
+<BOTH,SCRIPT>"len"			{ RTOKEN( LENGTH);}
+<BOTH,SCRIPT>"INCLUDE"			{ RTOKEN(INCLUDE);}
+<BOTH,SCRIPT>"PHDRS"			{ RTOKEN (PHDRS); }
+<EXPRESSION,BOTH,SCRIPT>"AT"			{ RTOKEN(AT);}
+<EXPRESSION,BOTH,SCRIPT>"PROVIDE"		{ RTOKEN(PROVIDE); }
+<MRI>"#".*\n?\r?		{ ++ lineno; }
+<MRI>"\n"	                { ++ lineno;  RTOKEN(NEWLINE); }
+<MRI>"\r"	                { ++ 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>"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>"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 = buystring(yytext); 
+				  return NAME;
+				}
+
+
+<BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}*	{
+				 yylval.name = buystring(yytext); 
+				  return NAME;
+				}
+<BOTH,EXPRESSION>"-l"{FILENAMECHAR}+ {
+				  yylval.name = buystring (yytext + 2);
+				  return LNAME;
+				}
+<SCRIPT>{WILDCHAR}* { yylval.name = buystring(yytext); return NAME; }
+
+<EXPRESSION,BOTH,SCRIPT>"\""[^\"]*"\"" {
+					/* No matter the state, quotes
+					   give what's inside */
+					yylval.name = buystring(yytext+1);
+					yylval.name[yyleng-2] = 0;
+					return NAME;
+				}
+<BOTH,SCRIPT,EXPRESSION>"\n"		{ lineno++;}
+<BOTH,SCRIPT,EXPRESSION>"\r"		{ lineno++;}
+<MRI,BOTH,SCRIPT,EXPRESSION>[ \t]
+
+<VERS_NODE,VERS_SCRIPT>[:,;]	{ return *yytext; }
+
+<VERS_NODE>global		{ RTOKEN(GLOBAL); }
+
+<VERS_NODE>local		{ RTOKEN(LOCAL); }
+
+<VERS_NODE>{V_IDENTIFIER}	{ yylval.name = buystring (yytext);
+				  return VERS_IDENTIFIER; }
+
+<VERS_SCRIPT>{V_TAG}		{ yylval.name = buystring (yytext);
+				  return VERS_TAG; }
+
+<VERS_START>"{"			{ BEGIN(VERS_SCRIPT); return *yytext; }
+
+<VERS_SCRIPT>"{"		{ BEGIN(VERS_NODE); return *yytext; }
+<VERS_SCRIPT,VERS_NODE>"}"	{ BEGIN(VERS_SCRIPT); return *yytext; }
+
+<VERS_START,VERS_NODE,VERS_SCRIPT>[\n\r]	{ lineno++; }
+
+<VERS_START,VERS_NODE,VERS_SCRIPT>#.*		{ /* Eat up comments */ }
+
+<VERS_START,VERS_NODE,VERS_SCRIPT>[ \t]+   	{ /* Eat up whitespace */ }
+
+<<EOF>> {
+  include_stack_ptr--;
+    
+  if (include_stack_ptr == 0) 
+  {
+    yyterminate();
+  }
+  else 
+  {
+    yy_switch_to_buffer(include_stack[include_stack_ptr]);
+
+  }
+  BEGIN(SCRIPT);
+  ldfile_input_filename = file_name_stack[include_stack_ptr - 1];
+  lineno = lineno_stack[include_stack_ptr - 1];
+
+  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, name)
+     FILE *file;
+     const char *name;
+{
+  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] = 1;
+  include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
+
+  include_stack_ptr++;
+  yyin = file;
+  yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
+  BEGIN (SCRIPT);
+}
+
+/* Return a newly created flex input buffer containing STRING,
+   which is SIZE bytes long.  */
+
+static YY_BUFFER_STATE 
+yy_create_string_buffer (string, size)
+     CONST char *string;
+     size_t size;
+{
+  YY_BUFFER_STATE b;
+
+  /* Calls to m-alloc get turned by sed into xm-alloc.  */
+  b = (YY_BUFFER_STATE) 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 = (char *) 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];
+
+  /* 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 (string)
+     CONST char *string;
+{
+  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] = "redirect";
+  lineno_stack[include_stack_ptr] = 0;
+  include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
+  include_stack_ptr++;
+  tmp = yy_create_string_buffer (string, strlen (string));
+  yy_switch_to_buffer (tmp);
+  BEGIN (SCRIPT);
+}
+
+/* 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 ()
+{
+  *(state_stack_p)++ = yy_start;
+  BEGIN (SCRIPT);
+}
+
+void
+ldlex_mri_script ()
+{
+  *(state_stack_p)++ = yy_start;
+  BEGIN (MRI);
+}
+
+void
+ldlex_version_script ()
+{
+  *(state_stack_p)++ = yy_start;
+  BEGIN (VERS_START);
+}
+
+void
+ldlex_version_file ()
+{
+  *(state_stack_p)++ = yy_start;
+  BEGIN (VERS_SCRIPT);
+}
+
+void
+ldlex_defsym ()
+{
+  *(state_stack_p)++ = yy_start;
+  BEGIN (DEFSYMEXP);
+}
+	   
+void
+ldlex_expression ()
+{
+  *(state_stack_p)++ = yy_start;
+  BEGIN (EXPRESSION);
+}
+
+void
+ldlex_both ()
+{
+  *(state_stack_p)++ = yy_start;
+  BEGIN (BOTH);
+}
+
+void
+ldlex_popstate ()
+{
+  yy_start = *(--state_stack_p);
+}
+
+
+/* Place up to MAX_SIZE characters in BUF and return in *RESULT
+   either the number of characters read, or 0 to indicate EOF.  */
+
+static void
+yy_input (buf, result, max_size)
+     char *buf;
+     int *result;
+     int max_size;
+{
+  *result = 0; 
+  if (yy_current_buffer->yy_input_file)
+    {
+      if (yyin)
+	{
+	  *result = read (fileno (yyin), (char *) buf, max_size);
+	  if (*result < 0) 
+	    einfo ("%F%P: read in flex scanner failed");
+	}
+    }
+}
+
+/* Eat the rest of a C-style comment.  */
+
+static void
+comment ()
+{
+  int c;
+
+  while (1)
+  {
+    c = input();
+    while (c != '*' && c != EOF) 
+    {
+      if (c == '\n' || c == '\r')
+	lineno++;
+      c = input();
+    }
+
+    if (c == '*')
+    {
+      c = input();
+      while (c == '*')
+       c = input();
+      if (c == '/')
+       break;			/* found the end */
+    }
+
+    if (c == '\n' || c == '\r')
+      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 (where, what)
+     char *where, *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", ldfile_input_filename);
+    }
+
+  if (! isprint ((unsigned char) *what))
+    {
+      sprintf (buf, "\\%03o", (unsigned int) *what);
+      what = buf;
+    }
+
+  einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where);
+}