mirror of
https://git.FreeBSD.org/src.git
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97d40d3d4a
us up to version 2.17.50.20070703, at the last GPLv2 commit. Amongst others, this added upstream support for some FreeBSD-specific things that we previously had to manually hack in, such as the OSABI label support, and so on. There are also quite a number of new files, some for cpu's (e.g. SPU) that we may or may not be interested in, but those can be cleaned up later on, if needed.
692 lines
20 KiB
Plaintext
692 lines
20 KiB
Plaintext
%{
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/* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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2000, 2001, 2002, 2003, 2004, 2005, 2007
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Free Software Foundation, Inc.
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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/*
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This was written by steve chamberlain
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sac@cygnus.com
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*/
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#include "sysdep.h"
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#include "bfd.h"
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#include "safe-ctype.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include <ldgram.h>
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#include "ldfile.h"
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#include "ldlex.h"
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#include "ldmain.h"
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#include "libiberty.h"
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/* The type of top-level parser input.
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yylex and yyparse (indirectly) both check this. */
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input_type parser_input;
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/* Line number in the current input file.
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(FIXME Actually, it doesn't appear to get reset for each file?) */
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unsigned int lineno = 1;
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/* The string we are currently lexing, or NULL if we are reading a
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file. */
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const char *lex_string = NULL;
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/* Support for flex reading from more than one input file (stream).
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`include_stack' is flex's input state for each open file;
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`file_name_stack' is the file names. `lineno_stack' is the current
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line numbers.
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If `include_stack_ptr' is 0, we haven't started reading anything yet.
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Otherwise, stack elements 0 through `include_stack_ptr - 1' are valid. */
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#undef YY_INPUT
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#define YY_INPUT(buf,result,max_size) yy_input (buf, &result, max_size)
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#define YY_NO_UNPUT
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#define MAX_INCLUDE_DEPTH 10
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static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
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static const char *file_name_stack[MAX_INCLUDE_DEPTH];
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static unsigned int lineno_stack[MAX_INCLUDE_DEPTH];
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static unsigned int include_stack_ptr = 0;
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static int vers_node_nesting = 0;
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static void yy_input (char *, int *, int);
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static void comment (void);
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static void lex_warn_invalid (char *where, char *what);
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/* STATES
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EXPRESSION definitely in an expression
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SCRIPT definitely in a script
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BOTH either EXPRESSION or SCRIPT
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DEFSYMEXP in an argument to -defsym
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MRI in an MRI script
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VERS_START starting a Sun style mapfile
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VERS_SCRIPT a Sun style mapfile
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VERS_NODE a node within a Sun style mapfile
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*/
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#define RTOKEN(x) { yylval.token = x; return x; }
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/* Some versions of flex want this. */
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#ifndef yywrap
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int yywrap (void) { return 1; }
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#endif
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%}
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%a 4000
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%o 5000
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CMDFILENAMECHAR [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\-\~]
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CMDFILENAMECHAR1 [_a-zA-Z0-9\/\.\\_\+\$\:\[\]\\\,\=\&\!\<\>\~]
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FILENAMECHAR1 [_a-zA-Z\/\.\\\$\_\~]
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SYMBOLCHARN [_a-zA-Z\/\.\\\$\_\~0-9]
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FILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~]
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WILDCHAR [_a-zA-Z0-9\/\.\-\_\+\=\$\:\[\]\\\,\~\?\*]
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WHITE [ \t\n\r]+
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NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]
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V_TAG [.$_a-zA-Z][._a-zA-Z0-9]*
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V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([*?.$_a-zA-Z0-9\[\]\-\!\^\\]|::)*
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%s SCRIPT
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%s EXPRESSION
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%s BOTH
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%s DEFSYMEXP
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%s MRI
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%s VERS_START
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%s VERS_SCRIPT
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%s VERS_NODE
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%%
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if (parser_input != input_selected)
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{
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/* The first token of the input determines the initial parser state. */
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input_type t = parser_input;
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parser_input = input_selected;
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switch (t)
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{
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case input_script: return INPUT_SCRIPT; break;
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case input_mri_script: return INPUT_MRI_SCRIPT; break;
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case input_version_script: return INPUT_VERSION_SCRIPT; break;
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case input_dynamic_list: return INPUT_DYNAMIC_LIST; break;
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case input_defsym: return INPUT_DEFSYM; break;
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default: abort ();
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}
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}
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<BOTH,SCRIPT,EXPRESSION,VERS_START,VERS_NODE,VERS_SCRIPT>"/*" { comment (); }
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<DEFSYMEXP>"-" { RTOKEN('-');}
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<DEFSYMEXP>"+" { RTOKEN('+');}
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<DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = xstrdup (yytext); return NAME; }
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<DEFSYMEXP>"=" { RTOKEN('='); }
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<MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
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yylval.integer = bfd_scan_vma (yytext + 1, 0, 16);
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yylval.bigint.str = NULL;
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return INT;
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}
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<MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) {
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int ibase ;
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switch (yytext[yyleng - 1]) {
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case 'X':
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case 'x':
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case 'H':
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case 'h':
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ibase = 16;
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break;
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case 'O':
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case 'o':
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ibase = 8;
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break;
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case 'B':
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case 'b':
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ibase = 2;
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break;
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default:
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ibase = 10;
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}
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yylval.integer = bfd_scan_vma (yytext, 0,
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ibase);
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yylval.bigint.str = NULL;
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return INT;
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}
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<SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? {
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char *s = yytext;
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int ibase = 0;
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if (*s == '$')
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{
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++s;
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ibase = 16;
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}
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yylval.integer = bfd_scan_vma (s, 0, ibase);
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yylval.bigint.str = NULL;
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if (yytext[yyleng - 1] == 'M'
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|| yytext[yyleng - 1] == 'm')
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{
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yylval.integer *= 1024 * 1024;
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}
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else if (yytext[yyleng - 1] == 'K'
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|| yytext[yyleng - 1]=='k')
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{
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yylval.integer *= 1024;
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}
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else if (yytext[0] == '0'
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&& (yytext[1] == 'x'
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|| yytext[1] == 'X'))
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{
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yylval.bigint.str = xstrdup (yytext + 2);
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}
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return INT;
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}
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<BOTH,SCRIPT,EXPRESSION,MRI>"]" { RTOKEN(']');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"[" { RTOKEN('[');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"<<=" { RTOKEN(LSHIFTEQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>">>=" { RTOKEN(RSHIFTEQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"||" { RTOKEN(OROR);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"==" { RTOKEN(EQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"!=" { RTOKEN(NE);}
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<BOTH,SCRIPT,EXPRESSION,MRI>">=" { RTOKEN(GE);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"<=" { RTOKEN(LE);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"<<" { RTOKEN(LSHIFT);}
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<BOTH,SCRIPT,EXPRESSION,MRI>">>" { RTOKEN(RSHIFT);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"+=" { RTOKEN(PLUSEQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"-=" { RTOKEN(MINUSEQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"*=" { RTOKEN(MULTEQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"/=" { RTOKEN(DIVEQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"&=" { RTOKEN(ANDEQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"|=" { RTOKEN(OREQ);}
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<BOTH,SCRIPT,EXPRESSION,MRI>"&&" { RTOKEN(ANDAND);}
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<BOTH,SCRIPT,EXPRESSION,MRI>">" { RTOKEN('>');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"," { RTOKEN(',');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"&" { RTOKEN('&');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"|" { RTOKEN('|');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"~" { RTOKEN('~');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"!" { RTOKEN('!');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"?" { RTOKEN('?');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"*" { RTOKEN('*');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"+" { RTOKEN('+');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"-" { RTOKEN('-');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"/" { RTOKEN('/');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"%" { RTOKEN('%');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"<" { RTOKEN('<');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"=" { RTOKEN('=');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"}" { RTOKEN('}') ; }
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<BOTH,SCRIPT,EXPRESSION,MRI>"{" { RTOKEN('{'); }
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<BOTH,SCRIPT,EXPRESSION,MRI>")" { RTOKEN(')');}
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<BOTH,SCRIPT,EXPRESSION,MRI>"(" { RTOKEN('(');}
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<BOTH,SCRIPT,EXPRESSION,MRI>":" { RTOKEN(':'); }
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<BOTH,SCRIPT,EXPRESSION,MRI>";" { RTOKEN(';');}
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<BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);}
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<BOTH,SCRIPT,EXPRESSION>"ORIGIN" { RTOKEN(ORIGIN);}
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<BOTH,SCRIPT>"VERSION" { RTOKEN(VERSIONK);}
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<EXPRESSION,BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);}
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<EXPRESSION,BOTH,SCRIPT>"BIND" { RTOKEN(BIND);}
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<BOTH,SCRIPT,EXPRESSION>"LENGTH" { RTOKEN(LENGTH);}
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<EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);}
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<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_ALIGN" { RTOKEN(DATA_SEGMENT_ALIGN);}
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<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_RELRO_END" { RTOKEN(DATA_SEGMENT_RELRO_END);}
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<EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END" { RTOKEN(DATA_SEGMENT_END);}
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<EXPRESSION,BOTH,SCRIPT>"ADDR" { RTOKEN(ADDR);}
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<EXPRESSION,BOTH,SCRIPT>"LOADADDR" { RTOKEN(LOADADDR);}
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<EXPRESSION,BOTH,SCRIPT>"ALIGNOF" { RTOKEN(ALIGNOF); }
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<EXPRESSION,BOTH>"MAX" { RTOKEN(MAX_K); }
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<EXPRESSION,BOTH>"MIN" { RTOKEN(MIN_K); }
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<EXPRESSION,BOTH,SCRIPT>"ASSERT" { RTOKEN(ASSERT_K); }
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<BOTH,SCRIPT>"ENTRY" { RTOKEN(ENTRY);}
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<BOTH,SCRIPT,MRI>"EXTERN" { RTOKEN(EXTERN);}
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<EXPRESSION,BOTH,SCRIPT>"NEXT" { RTOKEN(NEXT);}
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<EXPRESSION,BOTH,SCRIPT>"sizeof_headers" { RTOKEN(SIZEOF_HEADERS);}
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<EXPRESSION,BOTH,SCRIPT>"SIZEOF_HEADERS" { RTOKEN(SIZEOF_HEADERS);}
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<EXPRESSION,BOTH,SCRIPT>"SEGMENT_START" { RTOKEN(SEGMENT_START);}
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<BOTH,SCRIPT>"MAP" { RTOKEN(MAP);}
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<EXPRESSION,BOTH,SCRIPT>"SIZEOF" { RTOKEN(SIZEOF);}
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<BOTH,SCRIPT>"TARGET" { RTOKEN(TARGET_K);}
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<BOTH,SCRIPT>"SEARCH_DIR" { RTOKEN(SEARCH_DIR);}
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<BOTH,SCRIPT>"OUTPUT" { RTOKEN(OUTPUT);}
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<BOTH,SCRIPT>"INPUT" { RTOKEN(INPUT);}
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<EXPRESSION,BOTH,SCRIPT>"GROUP" { RTOKEN(GROUP);}
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<EXPRESSION,BOTH,SCRIPT>"AS_NEEDED" { RTOKEN(AS_NEEDED);}
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<EXPRESSION,BOTH,SCRIPT>"DEFINED" { RTOKEN(DEFINED);}
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<BOTH,SCRIPT>"CREATE_OBJECT_SYMBOLS" { RTOKEN(CREATE_OBJECT_SYMBOLS);}
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<BOTH,SCRIPT>"CONSTRUCTORS" { RTOKEN( CONSTRUCTORS);}
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<BOTH,SCRIPT>"FORCE_COMMON_ALLOCATION" { RTOKEN(FORCE_COMMON_ALLOCATION);}
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<BOTH,SCRIPT>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_COMMON_ALLOCATION);}
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<BOTH,SCRIPT>"SECTIONS" { RTOKEN(SECTIONS);}
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<BOTH,SCRIPT>"FILL" { RTOKEN(FILL);}
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<BOTH,SCRIPT>"STARTUP" { RTOKEN(STARTUP);}
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<BOTH,SCRIPT>"OUTPUT_FORMAT" { RTOKEN(OUTPUT_FORMAT);}
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<BOTH,SCRIPT>"OUTPUT_ARCH" { RTOKEN( OUTPUT_ARCH);}
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<BOTH,SCRIPT>"HLL" { RTOKEN(HLL);}
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<BOTH,SCRIPT>"SYSLIB" { RTOKEN(SYSLIB);}
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<BOTH,SCRIPT>"FLOAT" { RTOKEN(FLOAT);}
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<BOTH,SCRIPT>"QUAD" { RTOKEN( QUAD);}
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<BOTH,SCRIPT>"SQUAD" { RTOKEN( SQUAD);}
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<BOTH,SCRIPT>"LONG" { RTOKEN( LONG);}
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<BOTH,SCRIPT>"SHORT" { RTOKEN( SHORT);}
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<BOTH,SCRIPT>"BYTE" { RTOKEN( BYTE);}
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<BOTH,SCRIPT>"NOFLOAT" { RTOKEN(NOFLOAT);}
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<EXPRESSION,BOTH,SCRIPT>"NOCROSSREFS" { RTOKEN(NOCROSSREFS);}
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<BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY); }
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<BOTH,SCRIPT>"SORT_BY_NAME" { RTOKEN(SORT_BY_NAME); }
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<BOTH,SCRIPT>"SORT_BY_ALIGNMENT" { RTOKEN(SORT_BY_ALIGNMENT); }
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<BOTH,SCRIPT>"SORT" { RTOKEN(SORT_BY_NAME); }
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<EXPRESSION,BOTH,SCRIPT>"NOLOAD" { RTOKEN(NOLOAD);}
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<EXPRESSION,BOTH,SCRIPT>"DSECT" { RTOKEN(DSECT);}
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<EXPRESSION,BOTH,SCRIPT>"COPY" { RTOKEN(COPY);}
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<EXPRESSION,BOTH,SCRIPT>"INFO" { RTOKEN(INFO);}
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<EXPRESSION,BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY);}
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<EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RO" { RTOKEN(ONLY_IF_RO); }
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<EXPRESSION,BOTH,SCRIPT>"ONLY_IF_RW" { RTOKEN(ONLY_IF_RW); }
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<EXPRESSION,BOTH,SCRIPT>"SPECIAL" { RTOKEN(SPECIAL); }
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<BOTH,SCRIPT>"o" { RTOKEN(ORIGIN);}
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<BOTH,SCRIPT>"org" { RTOKEN(ORIGIN);}
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<BOTH,SCRIPT>"l" { RTOKEN( LENGTH);}
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<BOTH,SCRIPT>"len" { RTOKEN( LENGTH);}
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<BOTH,SCRIPT>"INCLUDE" { RTOKEN(INCLUDE);}
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<BOTH,SCRIPT>"PHDRS" { RTOKEN (PHDRS); }
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<EXPRESSION,BOTH,SCRIPT>"AT" { RTOKEN(AT);}
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<EXPRESSION,BOTH,SCRIPT>"SUBALIGN" { RTOKEN(SUBALIGN);}
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<EXPRESSION,BOTH,SCRIPT>"PROVIDE" { RTOKEN(PROVIDE); }
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<EXPRESSION,BOTH,SCRIPT>"PROVIDE_HIDDEN" { RTOKEN(PROVIDE_HIDDEN); }
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<EXPRESSION,BOTH,SCRIPT>"KEEP" { RTOKEN(KEEP); }
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<EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE" { RTOKEN(EXCLUDE_FILE); }
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<EXPRESSION,BOTH,SCRIPT>"CONSTANT" { RTOKEN(CONSTANT);}
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<MRI>"#".*\n? { ++ lineno; }
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<MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); }
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<MRI>"*".* { /* Mri comment line */ }
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<MRI>";".* { /* Mri comment line */ }
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<MRI>"END" { RTOKEN(ENDWORD); }
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<MRI>"ALIGNMOD" { RTOKEN(ALIGNMOD);}
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<MRI>"ALIGN" { RTOKEN(ALIGN_K);}
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<MRI>"CHIP" { RTOKEN(CHIP); }
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<MRI>"BASE" { RTOKEN(BASE); }
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<MRI>"ALIAS" { RTOKEN(ALIAS); }
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<MRI>"TRUNCATE" { RTOKEN(TRUNCATE); }
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<MRI>"LOAD" { RTOKEN(LOAD); }
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<MRI>"PUBLIC" { RTOKEN(PUBLIC); }
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<MRI>"ORDER" { RTOKEN(ORDER); }
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<MRI>"NAME" { RTOKEN(NAMEWORD); }
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<MRI>"FORMAT" { RTOKEN(FORMAT); }
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<MRI>"CASE" { RTOKEN(CASE); }
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<MRI>"START" { RTOKEN(START); }
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<MRI>"LIST".* { RTOKEN(LIST); /* LIST and ignore to end of line */ }
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<MRI>"SECT" { RTOKEN(SECT); }
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<EXPRESSION,BOTH,SCRIPT,MRI>"ABSOLUTE" { RTOKEN(ABSOLUTE); }
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<MRI>"end" { RTOKEN(ENDWORD); }
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<MRI>"alignmod" { RTOKEN(ALIGNMOD);}
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<MRI>"align" { RTOKEN(ALIGN_K);}
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<MRI>"chip" { RTOKEN(CHIP); }
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<MRI>"base" { RTOKEN(BASE); }
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<MRI>"alias" { RTOKEN(ALIAS); }
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<MRI>"truncate" { RTOKEN(TRUNCATE); }
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<MRI>"load" { RTOKEN(LOAD); }
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<MRI>"public" { RTOKEN(PUBLIC); }
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<MRI>"order" { RTOKEN(ORDER); }
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<MRI>"name" { RTOKEN(NAMEWORD); }
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<MRI>"format" { RTOKEN(FORMAT); }
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<MRI>"case" { RTOKEN(CASE); }
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<MRI>"extern" { RTOKEN(EXTERN); }
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<MRI>"start" { RTOKEN(START); }
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<MRI>"list".* { RTOKEN(LIST); /* LIST and ignore to end of line */ }
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<MRI>"sect" { RTOKEN(SECT); }
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<EXPRESSION,BOTH,SCRIPT,MRI>"absolute" { RTOKEN(ABSOLUTE); }
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<MRI>{FILENAMECHAR1}{NOCFILENAMECHAR}* {
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/* Filename without commas, needed to parse mri stuff */
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yylval.name = xstrdup (yytext);
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return NAME;
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}
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<BOTH>{FILENAMECHAR1}{FILENAMECHAR}* {
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yylval.name = xstrdup (yytext);
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return NAME;
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}
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||
<BOTH>"-l"{FILENAMECHAR}+ {
|
||
yylval.name = xstrdup (yytext + 2);
|
||
return LNAME;
|
||
}
|
||
<EXPRESSION>{FILENAMECHAR1}{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>"\""[^\"]*"\"" {
|
||
/* No matter the state, quotes
|
||
give what's inside */
|
||
yylval.name = xstrdup (yytext + 1);
|
||
yylval.name[yyleng - 2] = 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>[\n] { lineno++; }
|
||
|
||
<VERS_START,VERS_NODE,VERS_SCRIPT>#.* { /* Eat up comments */ }
|
||
|
||
<VERS_START,VERS_NODE,VERS_SCRIPT>[ \t\r]+ { /* Eat up whitespace */ }
|
||
|
||
<<EOF>> {
|
||
include_stack_ptr--;
|
||
|
||
if (include_stack_ptr == 0)
|
||
{
|
||
yyterminate ();
|
||
}
|
||
else
|
||
{
|
||
yy_switch_to_buffer (include_stack[include_stack_ptr]);
|
||
}
|
||
|
||
ldfile_input_filename = file_name_stack[include_stack_ptr - 1];
|
||
lineno = lineno_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)
|
||
{
|
||
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;
|
||
include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
|
||
|
||
include_stack_ptr++;
|
||
lineno = 1;
|
||
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)
|
||
{
|
||
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] = lineno;
|
||
include_stack[include_stack_ptr] = YY_CURRENT_BUFFER;
|
||
include_stack_ptr++;
|
||
lineno = 1;
|
||
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_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);
|
||
}
|
||
|
||
|
||
/* 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 (char *buf, int *result, int max_size)
|
||
{
|
||
*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");
|
||
}
|
||
}
|
||
}
|
||
|
||
/* 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", ldfile_input_filename);
|
||
}
|
||
|
||
if (! ISPRINT (*what))
|
||
{
|
||
sprintf (buf, "\\%03o", (unsigned int) *what);
|
||
what = buf;
|
||
}
|
||
|
||
einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where);
|
||
}
|