OpenE2K
/
binutils-gdb
12
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
binutils-gdb/ld/ldlex.l

663 lines
19 KiB
Plaintext
Raw Normal View History

19990502 sourceware import
1999-05-03 09:29:11 +02:00
%{
/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999
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;
/* 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 int vers_node_nesting = 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>((("$"|"0x")([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? {
char *s = yytext;
if (*s == '$')
++s;
yylval.integer = bfd_scan_vma (s, 0, 0);
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(VERSIONK);}
<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_K); }
<EXPRESSION,BOTH>"MIN" { RTOKEN(MIN_K); }
<EXPRESSION,BOTH>"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);}
<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>"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);}
<BOTH,SCRIPT>"OVERLAY" { RTOKEN(OVERLAY); }
<BOTH,SCRIPT>"SORT" { RTOKEN(SORT); }
<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); }
<EXPRESSION,BOTH,SCRIPT>"KEEP" { RTOKEN(KEEP); }
<EXPRESSION,BOTH,SCRIPT>"EXCLUDE_FILE" { RTOKEN(EXCLUDE_FILE); }
<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 = 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}* {
/* 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 = buystring(yytext);
return NAME;
}
}
<EXPRESSION,BOTH,SCRIPT,VERS_NODE>"\""[^\"]*"\"" {
/* 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++;}
<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 = 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);
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]);
}
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\n");
}
}
}
/* Eat the rest of a C-style comment. */
static void
comment ()
{
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 (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);
}