/* * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands. * See the copyright notice in the ACK home directory, in the file "Copyright". */ /* $Id$ */ /* MAIN PROGRAM */ #include "lint.h" #include "nofloat.h" #include #include "nopp.h" #include "target_sizes.h" #include "debug.h" #include "use_tmp.h" #include "inputtype.h" #include "input.h" #include "level.h" #include "idf.h" #include "arith.h" #include "type.h" #include "declar.h" #include "tokenname.h" #include "Lpars.h" #include "LLlex.h" #include #include "specials.h" #include "noRoption.h" #include "nocross.h" #include "sizes.h" #include "align.h" #include "assert.h" #include "macro.h" extern struct tokenname tkidf[], tkother[]; extern char *symbol2str(); extern char options[128]; #ifndef NOPP int inc_pos = 1; /* place where next -I goes */ int inc_total = 0; int inc_max; char **inctable; extern int do_dependencies; extern char *dep_file; static File *dep_fd = STDOUT; extern char *getwdir(); #endif /* NOPP */ struct sp_id special_ids[] = { {"setjmp", SP_SETJMP}, /* non-local goto's are registered */ {0, 0} }; #ifndef NOCROSS arith short_size = SZ_SHORT, word_size = SZ_WORD, dword_size = (2 * SZ_WORD), int_size = SZ_INT, long_size = SZ_LONG, #ifndef NOFLOAT float_size = SZ_FLOAT, double_size = SZ_DOUBLE, #endif /* NOFLOAT */ pointer_size = SZ_POINTER; int short_align = AL_SHORT, word_align = AL_WORD, int_align = AL_INT, long_align = AL_LONG, #ifndef NOFLOAT float_align = AL_FLOAT, double_align = AL_DOUBLE, #endif /* NOFLOAT */ pointer_align = AL_POINTER, struct_align = AL_STRUCT, union_align = AL_UNION; #endif /* NOCROSS */ #ifndef NOPP arith ifval; /* ifval will contain the result of the #if expression */ #endif /* NOPP */ char *prog_name; main(argc, argv) char *argv[]; { /* parse and interpret the command line options */ prog_name = argv[0]; init_hmask(); #ifndef NOPP inctable = (char **) Malloc(10 * sizeof(char *)); inctable[0] = ""; inctable[1] = "/usr/include"; inctable[2] = 0; inc_total = 3; inc_max = 10; init_pp(); /* initialise the preprocessor macros */ #endif /* NOPP */ /* Note: source file "-" indicates that the source is supplied as standard input. This is only allowed if INP_READ_IN_ONE is not defined! */ #ifdef INP_READ_IN_ONE while (argc > 1 && *argv[1] == '-') #else /* INP_READ_IN_ONE */ while (argc > 1 && *argv[1] == '-' && argv[1][1] != '\0') #endif /* INP_READ_IN_ONE */ { char *par = &argv[1][1]; do_option(par); argc--, argv++; } #ifdef LINT lint_init(); #endif /* LINT */ compile(argc - 1, &argv[1]); #ifdef DEBUG hash_stat(); #endif /* DEBUG */ #ifndef NOPP if (do_dependencies) { extern char *source; list_dependencies(source); } #endif sys_stop(err_occurred ? S_EXIT : S_END); /*NOTREACHED*/ } #ifndef NOPP struct idf *file_head; extern char *strrindex(); list_dependencies(source) char *source; { register struct idf *p = file_head; if (source) { register char *s = strrindex(source, '.'); if (s && *(s+1)) { s++; *s++ = 'o'; *s = '\0'; /* the source may be in another directory than the * object generated, so don't include the pathname * leading to it. */ if (s = strrindex(source, '/')) { source = s + 1; } } else source = 0; } if (dep_file && !sys_open(dep_file, OP_WRITE, &dep_fd)) { fatal("could not open %s", dep_file); } while (p) { ASSERT(p->id_resmac == K_FILE); dependency(p->id_text, source); p = (struct idf *) (p->id_file); } } add_dependency(s) char *s; { register struct idf *p = str2idf(s); if (! p->id_resmac) { p->id_resmac = K_FILE; p->id_file = (char *) file_head; file_head = p; } } dependency(s, source) char *s, *source; { if (options['i'] && !strncmp(s, "/usr/include/", 13)) { return; } if (options['m'] && source) { fprint(dep_fd, "%s: %s\n", source, s); } else fprint(dep_fd, "%s\n", s); } #endif /* NOPP */ char *source = 0; char *nmlist = 0; compile(argc, argv) char *argv[]; { char *result; #ifndef LINT register char *destination = 0; #endif /* LINT */ #ifdef DEBUG #ifndef NOPP int pp_only = options['E'] || options['P'] || options['C']; #endif /* NOPP */ #endif switch (argc) { case 1: #ifndef LINT #ifdef DEBUG #ifndef NOPP if (!pp_only) #endif /* NOPP */ #endif fatal("%s: destination file not specified", prog_name); #endif /* LINT */ break; #ifndef LINT case 2: destination = argv[1]; break; case 3: nmlist = argv[2]; destination = argv[1]; break; #endif /* LINT */ default: #ifndef LINT fatal("use: %s source destination [namelist]", prog_name); #else /* LINT */ fatal("use: %s source", prog_name); #endif /* LINT */ break; } if (strcmp(argv[0], "-")) FileName = source = argv[0]; else { source = 0; FileName = "standard input"; } if (!InsertFile(source, (char **) 0, &result)) /* read the source file */ fatal("%s: no source file %s\n", prog_name, FileName); File_Inserted = 1; init(); LineNumber = 0; nestlow = -1; #ifndef LINT init_code(destination && strcmp(destination, "-") != 0 ? destination : 0); #endif #ifndef NOPP WorkingDir = getwdir(source); #endif /* NOPP */ PushLex(); /* initialize lex machine */ #ifdef DEBUG #ifndef NOPP if (pp_only) /* run the preprocessor as if it is stand-alone */ preprocess(); else #endif /* NOPP */ #endif /* DEBUG */ { #ifndef LINT /* compile the source text */ C_program(); #ifdef PREPEND_SCOPES prepend_scopes(); #endif /* PREPEND_SCOPES */ end_code(); #else /* LINT */ /* lint the source text */ C_program(); #endif /* LINT */ #ifdef DEBUG if (options['u']) { unstack_level(); /* unstack L_GLOBAL */ } if (options['f'] || options['t']) dumpidftab("end of main", options['f'] ? 0 : 0); #endif /* DEBUG */ } PopLex(); } init() { init_cst(); /* initialize variables of "cstoper.c" */ reserve(tkidf); /* mark the C reserved words as such */ init_specials(special_ids); /* mark special ids as such */ #ifndef NOROPTION if (options['R']) reserve(tkother); #endif char_type = standard_type(CHAR, 0, 1, (arith)1); uchar_type = standard_type(CHAR, UNSIGNED, 1, (arith)1); short_type = standard_type(SHORT, 0, short_align, short_size); ushort_type = standard_type(SHORT, UNSIGNED, short_align, short_size); /* Treat type `word' as `int', having its own size and alignment requirements. This type is transparent to the user. */ word_type = standard_type(INT, 0, word_align, word_size); uword_type = standard_type(INT, UNSIGNED, word_align, word_size); int_type = standard_type(INT, 0, int_align, int_size); uint_type = standard_type(INT, UNSIGNED, int_align, int_size); long_type = standard_type(LONG, 0, long_align, long_size); ulong_type = standard_type(LONG, UNSIGNED, long_align, long_size); #ifndef NOFLOAT float_type = standard_type(FLOAT, 0, float_align, float_size); double_type = standard_type(DOUBLE, 0, double_align, double_size); #endif /* NOFLOAT */ void_type = standard_type(VOID, 0, 1, (arith)0); label_type = standard_type(LABEL, 0, 0, (arith)0); error_type = standard_type(ERRONEOUS, 0, 1, (arith)1); /* Pointer Arithmetic type: all arithmetics concerning pointers is supposed to be performed in the pointer arithmetic type which is equal to either int_type or long_type, depending on the pointer_size */ if ((int)pointer_size == (int)word_size) pa_type = word_type; else if ((int)pointer_size == (int)short_size) pa_type = short_type; else if ((int)pointer_size == (int)int_size) pa_type = int_type; else if ((int)pointer_size == (int)long_size) pa_type = long_type; else fatal("pointer size incompatible with any integral size"); if ((int)int_size != (int)word_size) fatal("int_size and word_size are not equal"); if ((int)short_size > (int)int_size || (int)int_size > (int)long_size) fatal("sizes of short/int/long decreasing"); /* Build a type for function returning int, RM 13 */ funint_type = construct_type(FUNCTION, int_type, (arith)0); string_type = construct_type(POINTER, char_type, (arith)0); /* Define the standard type identifiers. */ add_def(str2idf("char"), TYPEDEF, char_type, L_UNIVERSAL); add_def(str2idf("int"), TYPEDEF, int_type, L_UNIVERSAL); #ifndef NOFLOAT add_def(str2idf("float"), TYPEDEF, float_type, L_UNIVERSAL); add_def(str2idf("double"), TYPEDEF, double_type, L_UNIVERSAL); #endif /* NOFLOAT */ add_def(str2idf("void"), TYPEDEF, void_type, L_UNIVERSAL); stack_level(); } init_specials(si) register struct sp_id *si; { while (si->si_identifier) { struct idf *idf = str2idf(si->si_identifier); if (idf->id_special) fatal("maximum identifier length insufficient"); idf->id_special = si->si_flag; si++; } } #ifdef DEBUG #ifndef NOPP preprocess() { /* preprocess() is the "stand-alone" preprocessor which consecutively calls the lexical analyzer LLlex() to get the tokens and prints them in a suitable way. */ static unsigned int lastlineno = 0; static char *lastfilenm = ""; while (LLlex() != EOI) { if (lastlineno != dot.tk_line) { if (strcmp(lastfilenm, dot.tk_file) == 0) { if (dot.tk_line - lastlineno <= 1) { lastlineno++; print("\n"); } else { lastlineno = dot.tk_line; if (!options['P']) print("\n#line %ld \"%s\"\n", lastlineno, lastfilenm ); } } else { lastfilenm = dot.tk_file; lastlineno = dot.tk_line; if (!options['P']) print("\n#line %ld \"%s\"\n", lastlineno, lastfilenm); } } else if (strcmp(lastfilenm, dot.tk_file) != 0) { lastfilenm = dot.tk_file; if (!options['P']) print("\n#line %ld \"%s\"\n", lastlineno, lastfilenm); } switch (DOT) { case IDENTIFIER: case TYPE_IDENTIFIER: print("%s ", dot.tk_idf->id_text); break; case STRING: { char sbuf[1024]; /* a transient buffer */ char *bts2str(); print("\"%s\" ", bts2str(dot.tk_bts, dot.tk_len, sbuf)); break; } case INTEGER: print("%ld ", dot.tk_ival); break; #ifndef NOFLOAT case FLOATING: print("%s ", dot.tk_fval); break; #endif /* NOFLOAT */ case EOI: case EOF: return; default: /* very expensive... */ print("%s ", symbol2str(DOT)); } } } #endif /* NOPP */ #endif /* DEBUG */ void No_Mem() /* called by alloc package */ { fatal("out of memory"); } void C_failed() /* called by EM_code module */ { fatal("write failed"); }