%{ /* 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\r]+ 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; switch (t) { case input_script: return INPUT_SCRIPT; break; case input_mri_script: return INPUT_MRI_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>"$"([0-9A-Fa-f])+ { yylval.integer = bfd_scan_vma (yytext+1, 0,16); return INT; } <MRI,EXPRESSION>([0-9A-Fa-f])+(H|X|B|O|D) { int ibase ; switch (yytext[yyleng-1]) { case 'X': case 'H': ibase = 16; break; case 'O': ibase = 8; break; case 'B': ibase = 2; break; default: ibase = 10; } yylval.integer = bfd_scan_vma (yytext+1, 0, ibase); return INT; } <SCRIPT,DEFSYMEXP,MRI,BOTH,EXPRESSION>"$"?"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);} <BOTH,SCRIPT>"PROVIDE" { RTOKEN(PROVIDE); } <MRI>"\n" { ++ lineno; RTOKEN(NEWLINE); } <MRI>"\r" { ++ 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++;} <BOTH,SCRIPT,EXPRESSION>"\r" { 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' || c == '\r') lineno++; c = input(); } if (c == '*') { c = input(); while (c == '*') c = input(); if (c == '/') break; /* found the end */ } if (c == '\n' || c == '\r') lineno++; if (c == EOF) { einfo( "%F%P: EOF in comment\n"); break; } } } /* Warn the user about a garbage character WHAT in the input in context WHERE. */ static void lex_warn_invalid (where, what) char *where, *what; { fprintf(stderr, "%s: ignoring invalid character `%s'%s\n", program_name, what, where); }