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- /* $Header$ */
- /* MAIN PROGRAM */
- #include <system.h>
- #include "nopp.h"
- #include "target_sizes.h"
- #include "debug.h"
- #include "myalloc.h"
- #include "use_tmp.h"
- #include "maxincl.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 "alloc.h"
- #include "specials.h"
- extern struct tokenname tkidf[], tkother[];
- extern char *symbol2str();
- char options[128]; /* one for every char */
- #ifndef NOPP
- int inc_pos = 1; /* place where next -I goes */
- char *inctable[MAXINCL] = { /* list for includes */
- ".",
- "/usr/include",
- 0
- };
- char **WorkingDir = &inctable[0];
- #endif NOPP
- struct sp_id special_ids[] = {
- {"setjmp", SP_SETJMP}, /* non-local goto's are registered */
- {0, 0}
- };
- 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;
- #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];
- #ifdef OWNALLOC
- init_mem();
- #endif OWNALLOC
- init_hmask();
- #ifndef NOPP
- 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 READ_IN_ONE is
- not defined!
- */
- #ifdef READ_IN_ONE
- while (argc > 1 && *argv[1] == '-')
- #else READ_IN_ONE
- while (argc > 1 && *argv[1] == '-' && argv[1][1] != '\0')
- #endif READ_IN_ONE
- {
- char *par = &argv[1][1];
- if (*par == '-')
- par++;
- do_option(par);
- argc--, argv++;
- }
- compile(argc - 1, &argv[1]);
- #ifdef OWNALLOC
- #ifdef DEBUG
- mem_stat();
- #endif DEBUG
- #endif OWNALLOC
- #ifdef DEBUG
- hash_stat();
- #endif DEBUG
- return err_occurred;
- }
- char *source = 0;
- char *destination = 0;
- char *nmlist = 0;
- #ifdef USE_TMP
- extern char *mktemp(); /* library routine */
- char *tmpfdir = "/tmp"; /* where to keep the temporary file */
- static char *tmpfname = "/Cem.XXXXXX";
- char *tmpfile = 0;
- #endif USE_TMP
- compile(argc, argv)
- char *argv[];
- {
- #ifdef USE_TMP
- char tmpf[256];
- #endif
- #ifndef NOPP
- int pp_only = options['E'] || options['P'];
- #endif NOPP
- source = strcmp(argv[0], "-") ? argv[0] : 0;
- switch (argc) {
- case 1:
- #ifndef NOPP
- if (!pp_only)
- #endif NOPP
- fatal("%s: destination file not specified", prog_name);
- break;
- case 2:
- destination = argv[1];
- break;
- case 3:
- nmlist = argv[2];
- destination = argv[1];
- break;
- default:
- fatal("use: %s source destination [namelist]", prog_name);
- break;
- }
- #ifdef USE_TMP
- strcpy(tmpf, tmpfdir);
- strcat(tmpf, tmpfname);
- tmpfile = mktemp(tmpf);
- #endif USE_TMP
- if (strcmp(destination, "-") == 0)
- destination = 0;
- if (!InsertFile(source, (char **) 0)) /* read the source file */
- fatal("%s: no source file %s\n", prog_name,
- source ? source : "stdin");
- init();
- /* FileName = source; /* needed ??? */
- PushLex();
- #ifndef NOPP
- if (pp_only) /* run the preprocessor as if it is stand-alone */
- preprocess();
- else {
- #endif NOPP
- #ifdef USE_TMP
- init_code(tmpfile);
- #else USE_TMP
- init_code(destination);
- #endif USE_TMP
- /* compile the source text */
- C_program();
- end_code();
- #ifdef USE_TMP
- prepend_scopes(destination);
- AppendFile(tmpfile, destination);
- sys_remove(tmpfile);
- #endif USE_TMP
- #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
- #ifndef NOPP
- }
- #endif NOPP
- 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 */
- if (options['R'])
- reserve(tkother);
- 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, 0, (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 (pointer_size == word_size)
- pa_type = word_type;
- else
- if (pointer_size == short_size)
- pa_type = short_type;
- else
- if (pointer_size == int_size)
- pa_type = int_type;
- else
- if (pointer_size == long_size)
- pa_type = long_type;
- else
- fatal("pointer size incompatible with any integral size");
- if (int_size != word_size)
- fatal("int_size and word_size are not equal");
- if (short_size > int_size || int_size > 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)
- 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++;
- }
- }
- #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
- #ifdef USE_TMP
- AppendFile(src, dst)
- char *src, *dst;
- {
- File *fp_src, *fp_dst;
- char buf[BUFSIZ];
- int n;
- if (sys_open(src, OP_READ, &fp_src) == 0)
- fatal("cannot read %s", src);
- if (dst) {
- if (sys_open(dst, OP_APPEND, &fp_dst) == 0)
- fatal("cannot write to %s", src);
- }
- else
- fp_dst = STDOUT;
- while (sys_read(fp_src, buf, BUFSIZ, &n) != 0 && n > 0)
- if (sys_write(fp_dst, buf, n) == 0)
- fatal("(AppendFile) write error");
- if (n != 0)
- fatal("(AppendFile) read error");
- sys_close(fp_src);
- if (fp_dst != STDOUT)
- sys_close(fp_dst);
- }
- #endif USE_TMP
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