%{ /* Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 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> #ifdef MPW /* Prevent enum redefinition problems. */ #define TRUE_FALSE_ALREADY_DEFINED #endif /* MPW */ #include "bfd.h" #include "sysdep.h" #include "safe-ctype.h" #include "ld.h" #include "ldmisc.h" #include "ldexp.h" #include "ldlang.h" #include "ldgram.h" #include "ldfile.h" #include "ldlex.h" #include "ldmain.h" #include "libiberty.h" /* The type of top-level parser input. yylex and yyparse (indirectly) both check this. */ input_type parser_input; /* Line number in the current input file. (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 = xstrdup(yytext); return NAME; } <DEFSYMEXP>"=" { RTOKEN('='); } <MRI,EXPRESSION>"$"([0-9A-Fa-f])+ { yylval.integer = bfd_scan_vma (yytext+1, 0,16); yylval.bigint.str = (char *) 0; return INT; } <MRI,EXPRESSION>([0-9A-Fa-f])+(H|h|X|x|B|b|O|o|D|d) { int ibase ; switch (yytext[yyleng-1]) { case 'X': case 'x': case 'H': case 'h': ibase = 16; break; case 'O': case 'o': ibase = 8; break; case 'B': case 'b': ibase = 2; break; default: ibase = 10; } yylval.integer = bfd_scan_vma (yytext, 0, ibase); yylval.bigint.str = (char *) 0; return INT; } <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>((("$"|0[xX])([0-9A-Fa-f])+)|(([0-9])+))(M|K|m|k)? { char *s = yytext; int ibase = 0; if (*s == '$') { ++s; ibase = 16; } yylval.integer = bfd_scan_vma (s, 0, ibase); yylval.bigint.str = (char *) 0; if (yytext[yyleng-1] == 'M' || yytext[yyleng-1] == 'm') { yylval.integer *= 1024 * 1024; } else if (yytext[yyleng-1] == 'K' || yytext[yyleng-1]=='k') { yylval.integer *= 1024; } else if (yytext[0] == '0' && (yytext[1] == 'x' || yytext[1] == 'X')) { yylval.bigint.str = xstrdup (yytext + 2); } return INT; } <BOTH,SCRIPT,EXPRESSION,MRI>"]" { RTOKEN(']');} <BOTH,SCRIPT,EXPRESSION,MRI>"[" { RTOKEN('[');} <BOTH,SCRIPT,EXPRESSION,MRI>"<<=" { RTOKEN(LSHIFTEQ);} <BOTH,SCRIPT,EXPRESSION,MRI>">>=" { RTOKEN(RSHIFTEQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"||" { RTOKEN(OROR);} <BOTH,SCRIPT,EXPRESSION,MRI>"==" { RTOKEN(EQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"!=" { RTOKEN(NE);} <BOTH,SCRIPT,EXPRESSION,MRI>">=" { RTOKEN(GE);} <BOTH,SCRIPT,EXPRESSION,MRI>"<=" { RTOKEN(LE);} <BOTH,SCRIPT,EXPRESSION,MRI>"<<" { RTOKEN(LSHIFT);} <BOTH,SCRIPT,EXPRESSION,MRI>">>" { RTOKEN(RSHIFT);} <BOTH,SCRIPT,EXPRESSION,MRI>"+=" { RTOKEN(PLUSEQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"-=" { RTOKEN(MINUSEQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"*=" { RTOKEN(MULTEQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"/=" { RTOKEN(DIVEQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"&=" { RTOKEN(ANDEQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"|=" { RTOKEN(OREQ);} <BOTH,SCRIPT,EXPRESSION,MRI>"&&" { RTOKEN(ANDAND);} <BOTH,SCRIPT,EXPRESSION,MRI>">" { RTOKEN('>');} <BOTH,SCRIPT,EXPRESSION,MRI>"," { 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>"DATA_SEGMENT_ALIGN" { RTOKEN(DATA_SEGMENT_ALIGN);} <EXPRESSION,BOTH,SCRIPT>"DATA_SEGMENT_END" { RTOKEN(DATA_SEGMENT_END);} <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>"INHIBIT_COMMON_ALLOCATION" { RTOKEN(INHIBIT_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 = xstrdup(yytext); return NAME; } <BOTH,EXPRESSION>{FILENAMECHAR1}{FILENAMECHAR}* { yylval.name = xstrdup(yytext); return NAME; } <BOTH,EXPRESSION>"-l"{FILENAMECHAR}+ { 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, 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] = 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 (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]; 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 (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] = 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 () { *(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 = fread ((char *) 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 () { 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 (*what)) { sprintf (buf, "\\%03o", (unsigned int) *what); what = buf; } einfo ("%P:%S: ignoring invalid character `%s'%s\n", what, where); }