d4e5e3c330
* ld.texinfo (Options): Document changes to option syntax.
* Makefile.in: Update dependencies.
* ldver.c (help): Tweak dashes in usage message.
* ldgram.y (%union): Remove unused members.
Remove %tokens for command line options; add ones for input types.
(command_line): Rules removed.
(file): Instead of command line, recognize an
input type indicator, then use the nonterminal for that type.
(defsym_expr): New nonterminal from code formerly in command_line.
* ldlex.h: Declare parser input type enum and variable.
Don't declare parse_line.
* ldlex.l: Remove unused variables. Make some used ones static
and comment them.
(COMMAND): Start state and its rules removed.
At start of yylex, return input state token if at start of input.
(lex_redirect): Don't need to set yyout.
(ldlex_command): Function removed.
* ldmain.c (main): Instead of calling parse_line, set up the
redirections and call yyparse directly.
* ldmisc.c (vfinfo): If there's no input filename, print nothing, not
"command line".
* lexsup.c: Remove #if 0'd code.
(parse_line): Function removed.
(parse_args): Rewrite to use getopt_long_only.
(set_default_dirlist): New function from code formerly in
ldgram.y:command_line.
(set_section_start): New function.
* emultempl/generic.em, emultempl/gld960.em, emultempl/hppaelf.em,
emultempl/lnk960.em, emultempl/m88kbcs.em: Don't enclose
compiled-in link scripts in "{" and "}", as the grammar no longer
wants them to be.
518 lines
14 KiB
Plaintext
518 lines
14 KiB
Plaintext
%{
|
||
|
||
/* Copyright (C) 1991, 1992, 1993, 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
/*
|
||
This was written by steve chamberlain
|
||
sac@cygnus.com
|
||
*/
|
||
|
||
|
||
#include <ansidecl.h>
|
||
#include <stdio.h>
|
||
/* start-sanitize-mpw */
|
||
#ifdef MPW
|
||
/* Prevent enum redefinition problems. */
|
||
#define TRUE_FALSE_ALREADY_DEFINED
|
||
#endif /* MPW */
|
||
/* end-sanitize-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;
|
||
|
||
/* 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.
|
||
|
||
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 char *file_name_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
|
||
*/
|
||
#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\/\.\-\_\+\=\$\:\[\]\\\,\~]
|
||
FILENAME {FILENAMECHAR}+
|
||
WHITE [ \t\n]+
|
||
|
||
NOCFILENAMECHAR [_a-zA-Z0-9\/\.\-\_\+\$\:\[\]\\\~]
|
||
|
||
|
||
%s SCRIPT
|
||
%s EXPRESSION
|
||
%s BOTH
|
||
%s DEFSYMEXP
|
||
%s MRI
|
||
%%
|
||
|
||
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;
|
||
return t;
|
||
}
|
||
|
||
<BOTH,SCRIPT,EXPRESSION>"/*" { comment(); }
|
||
|
||
|
||
<DEFSYMEXP>"-" { RTOKEN('-');}
|
||
<DEFSYMEXP>"+" { RTOKEN('+');}
|
||
<DEFSYMEXP>{FILENAMECHAR1}{SYMBOLCHARN}* { yylval.name = buystring(yytext); return NAME; }
|
||
<DEFSYMEXP>"=" { RTOKEN('='); }
|
||
|
||
<MRI,EXPRESSION>"$"([0-9A-Fa-f])+ {
|
||
yylval.integer = bfd_scan_vma (yytext+1, 0,16);
|
||
return INT;
|
||
}
|
||
|
||
<MRI,EXPRESSION>([0-9A-Fa-f])+(H|X|B|O|D) {
|
||
int ibase ;
|
||
switch (yytext[yyleng-1]) {
|
||
case 'X':
|
||
case 'H':
|
||
ibase = 16;
|
||
break;
|
||
case 'O':
|
||
ibase = 8;
|
||
break;
|
||
case 'B':
|
||
ibase = 2;
|
||
break;
|
||
default:
|
||
ibase = 10;
|
||
}
|
||
yylval.integer = bfd_scan_vma (yytext+1, 0,
|
||
ibase);
|
||
return INT;
|
||
}
|
||
<SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>"$"?"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>"]" { RTOKEN(']');}
|
||
<BOTH,SCRIPT,EXPRESSION>"[" { RTOKEN('[');}
|
||
<BOTH,SCRIPT,EXPRESSION>"<<=" { RTOKEN(LSHIFTEQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>">>=" { RTOKEN(RSHIFTEQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"||" { RTOKEN(OROR);}
|
||
<BOTH,SCRIPT,EXPRESSION>"==" { RTOKEN(EQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"!=" { RTOKEN(NE);}
|
||
<BOTH,SCRIPT,EXPRESSION>">=" { RTOKEN(GE);}
|
||
<BOTH,SCRIPT,EXPRESSION>"<=" { RTOKEN(LE);}
|
||
<BOTH,SCRIPT,EXPRESSION>"<<" { RTOKEN(LSHIFT);}
|
||
<BOTH,SCRIPT,EXPRESSION>">>" { RTOKEN(RSHIFT);}
|
||
<BOTH,SCRIPT,EXPRESSION>"+=" { RTOKEN(PLUSEQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"-=" { RTOKEN(MINUSEQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"*=" { RTOKEN(MULTEQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"/=" { RTOKEN(DIVEQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"&=" { RTOKEN(ANDEQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"|=" { RTOKEN(OREQ);}
|
||
<BOTH,SCRIPT,EXPRESSION>"&&" { RTOKEN(ANDAND);}
|
||
<BOTH,SCRIPT,EXPRESSION>">" { RTOKEN('>');}
|
||
<MRI,BOTH,SCRIPT,EXPRESSION>"," { RTOKEN(',');}
|
||
<BOTH,SCRIPT,EXPRESSION>"&" { RTOKEN('&');}
|
||
<BOTH,SCRIPT,EXPRESSION>"|" { RTOKEN('|');}
|
||
<BOTH,SCRIPT,EXPRESSION>"~" { RTOKEN('~');}
|
||
<BOTH,SCRIPT,EXPRESSION>"!" { RTOKEN('!');}
|
||
<BOTH,SCRIPT,EXPRESSION>"?" { RTOKEN('?');}
|
||
<BOTH,SCRIPT,EXPRESSION>"*" { RTOKEN('*');}
|
||
<BOTH,SCRIPT,EXPRESSION>"+" { RTOKEN('+');}
|
||
<BOTH,SCRIPT,EXPRESSION>"-" { RTOKEN('-');}
|
||
<BOTH,SCRIPT,EXPRESSION>"/" { RTOKEN('/');}
|
||
<BOTH,SCRIPT,EXPRESSION>"%" { RTOKEN('%');}
|
||
<BOTH,SCRIPT,EXPRESSION>"<" { RTOKEN('<');}
|
||
<MRI,BOTH,SCRIPT,EXPRESSION>"=" { RTOKEN('=');}
|
||
<BOTH,SCRIPT,EXPRESSION>"}" { RTOKEN('}') ; }
|
||
<BOTH,SCRIPT,EXPRESSION>"{" { RTOKEN('{'); }
|
||
<BOTH,SCRIPT,EXPRESSION>")" { RTOKEN(')');}
|
||
<BOTH,SCRIPT,EXPRESSION>"(" { RTOKEN('(');}
|
||
<BOTH,SCRIPT,EXPRESSION>":" { RTOKEN(':'); }
|
||
<BOTH,SCRIPT,EXPRESSION>";" { RTOKEN(';');}
|
||
<BOTH,SCRIPT>"MEMORY" { RTOKEN(MEMORY);}
|
||
<BOTH,SCRIPT>"ORIGIN" { RTOKEN(ORIGIN);}
|
||
<BOTH,SCRIPT>"BLOCK" { RTOKEN(BLOCK);}
|
||
<BOTH,SCRIPT>"LENGTH" { RTOKEN(LENGTH);}
|
||
<EXPRESSION,BOTH,SCRIPT>"ALIGN" { RTOKEN(ALIGN_K);}
|
||
<EXPRESSION,BOTH,SCRIPT>"ADDR" { RTOKEN(ADDR);}
|
||
<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>"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>"NOLOAD" { RTOKEN(NOLOAD);}
|
||
<BOTH,SCRIPT>"DSECT" { RTOKEN(DSECT);}
|
||
<BOTH,SCRIPT>"COPY" { RTOKEN(COPY);}
|
||
<BOTH,SCRIPT>"INFO" { RTOKEN(INFO);}
|
||
<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);}
|
||
<EXPRESSION,BOTH,SCRIPT>"AT" { RTOKEN(AT);}
|
||
<MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); }
|
||
<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>"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>"chip" { RTOKEN(CHIP); }
|
||
<MRI>"load" { RTOKEN(LOAD); }
|
||
<MRI>"order" { RTOKEN(ORDER); }
|
||
<MRI>"name" { RTOKEN(NAMEWORD); }
|
||
<MRI>"format" { RTOKEN(FORMAT); }
|
||
<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;
|
||
}
|
||
<SCRIPT>{FILENAMECHAR}* { 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++;}
|
||
<MRI,BOTH,SCRIPT,EXPRESSION>[ \t]
|
||
|
||
<<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];
|
||
|
||
return END;
|
||
}
|
||
|
||
<SCRIPT,MRI>. 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;
|
||
char *name;
|
||
{
|
||
if (include_stack_ptr >= MAX_INCLUDE_DEPTH)
|
||
{
|
||
einfo("%F:includes nested too deeply\n");
|
||
}
|
||
file_name_stack[include_stack_ptr] = name;
|
||
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 = (YY_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];
|
||
b->yy_eof_status = EOF_NOT_SEEN;
|
||
|
||
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";
|
||
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_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')
|
||
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;
|
||
{
|
||
fprintf(stderr,
|
||
"%s: ignoring invalid character `%s'%s\n",
|
||
program_name, what, where);
|
||
}
|