Annotation of gforth/engine/main.c, revision 1.25
1.1 anton 1: /* command line interpretation, image loading etc. for Gforth
2:
3:
1.12 anton 4: Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
1.1 anton 5:
6: This file is part of Gforth.
7:
8: Gforth is free software; you can redistribute it and/or
9: modify it under the terms of the GNU General Public License
10: as published by the Free Software Foundation; either version 2
11: of the License, or (at your option) any later version.
12:
13: This program is distributed in the hope that it will be useful,
14: but WITHOUT ANY WARRANTY; without even the implied warranty of
15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16: GNU General Public License for more details.
17:
18: You should have received a copy of the GNU General Public License
19: along with this program; if not, write to the Free Software
20: Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21: */
22:
23: #include "config.h"
24: #include <errno.h>
25: #include <ctype.h>
26: #include <stdio.h>
1.2 pazsan 27: #include <unistd.h>
1.1 anton 28: #include <string.h>
29: #include <math.h>
30: #include <sys/types.h>
31: #include <sys/stat.h>
32: #include <fcntl.h>
33: #include <assert.h>
34: #include <stdlib.h>
1.11 pazsan 35: #ifndef STANDALONE
1.1 anton 36: #if HAVE_SYS_MMAN_H
37: #include <sys/mman.h>
38: #endif
1.11 pazsan 39: #endif
1.1 anton 40: #include "forth.h"
41: #include "io.h"
42: #include "getopt.h"
1.11 pazsan 43: #ifdef STANDALONE
44: #include <systypes.h>
45: #endif
1.1 anton 46:
47: #define PRIM_VERSION 1
48: /* increment this whenever the primitives change in an incompatible way */
49:
1.14 pazsan 50: #ifndef DEFAULTPATH
1.16 pazsan 51: # define DEFAULTPATH "~+"
1.14 pazsan 52: #endif
53:
1.1 anton 54: #ifdef MSDOS
55: jmp_buf throw_jmp_buf;
56: #endif
57:
58: #if defined(DIRECT_THREADED)
59: # define CA(n) (symbols[(n)])
60: #else
61: # define CA(n) ((Cell)(symbols+(n)))
62: #endif
63:
64: #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float))
65:
66: static UCell dictsize=0;
67: static UCell dsize=0;
68: static UCell rsize=0;
69: static UCell fsize=0;
70: static UCell lsize=0;
71: int offset_image=0;
1.4 anton 72: int die_on_signal=0;
1.13 pazsan 73: #ifndef INCLUDE_IMAGE
1.1 anton 74: static int clear_dictionary=0;
1.24 anton 75: UCell pagesize=1;
1.22 pazsan 76: char *progname;
77: #else
78: char *progname = "gforth";
79: int optind = 1;
1.13 pazsan 80: #endif
1.1 anton 81: static int debug=0;
1.24 anton 82: ImageHeader *gforth_header;
1.1 anton 83:
84: /* image file format:
1.15 pazsan 85: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
1.1 anton 86: * padding to a multiple of 8
1.15 pazsan 87: * magic: "Gforth2x" means format 0.4,
88: * where x is a byte with
89: * bit 7: reserved = 0
90: * bit 6:5: address unit size 2^n octets
91: * bit 4:3: character size 2^n octets
92: * bit 2:1: cell size 2^n octets
93: * bit 0: endian, big=0, little=1.
94: * The magic are always 8 octets, no matter what the native AU/character size is
1.1 anton 95: * padding to max alignment (no padding necessary on current machines)
1.24 anton 96: * ImageHeader structure (see forth.h)
1.1 anton 97: * data (size in ImageHeader.image_size)
98: * tags ((if relocatable, 1 bit/data cell)
99: *
100: * tag==1 means that the corresponding word is an address;
101: * If the word is >=0, the address is within the image;
102: * addresses within the image are given relative to the start of the image.
103: * If the word =-1 (CF_NIL), the address is NIL,
104: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
105: * If the word =CF(DODOES), it's a DOES> CFA
106: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
107: * possibly containing a jump to dodoes)
108: * If the word is <CF(DOESJUMP), it's a primitive
109: */
110:
1.10 pazsan 111: void relocate(Cell *image, const char *bitstring, int size, Label symbols[])
1.1 anton 112: {
1.16 pazsan 113: int i=0, j, k, steps=(size/sizeof(Cell))/RELINFOBITS;
1.11 pazsan 114: Cell token;
1.1 anton 115: char bits;
116: /* static char bits[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};*/
117:
118: /* printf("relocating %x[%x]\n", image, size); */
119:
120: for(k=0; k<=steps; k++)
1.13 pazsan 121: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.1 anton 122: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
1.13 pazsan 123: if(bits & (1U << (RELINFOBITS-1))) {
1.1 anton 124: /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/
1.11 pazsan 125: if((token=image[i])<0)
126: switch(token)
1.1 anton 127: {
128: case CF_NIL : image[i]=0; break;
129: #if !defined(DOUBLY_INDIRECT)
130: case CF(DOCOL) :
131: case CF(DOVAR) :
132: case CF(DOCON) :
133: case CF(DOUSER) :
134: case CF(DODEFER) :
1.11 pazsan 135: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break;
1.1 anton 136: case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break;
137: #endif /* !defined(DOUBLY_INDIRECT) */
138: case CF(DODOES) :
139: MAKE_DOES_CF(image+i,image[i+1]+((Cell)image));
140: break;
141: default :
142: /* printf("Code field generation image[%x]:=CA(%x)\n",
143: i, CF(image[i])); */
1.11 pazsan 144: image[i]=(Cell)CA(CF(token));
1.1 anton 145: }
146: else
147: image[i]+=(Cell)image;
148: }
149: }
1.22 pazsan 150: ((ImageHeader*)(image))->base = image;
1.1 anton 151: }
152:
153: UCell checksum(Label symbols[])
154: {
155: UCell r=PRIM_VERSION;
156: Cell i;
157:
158: for (i=DOCOL; i<=DOESJUMP; i++) {
159: r ^= (UCell)(symbols[i]);
160: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
161: }
162: #ifdef DIRECT_THREADED
163: /* we have to consider all the primitives */
164: for (; symbols[i]!=(Label)0; i++) {
165: r ^= (UCell)(symbols[i]);
166: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
167: }
168: #else
169: /* in indirect threaded code all primitives are accessed through the
170: symbols table, so we just have to put the base address of symbols
171: in the checksum */
172: r ^= (UCell)symbols;
173: #endif
174: return r;
175: }
176:
1.3 anton 177: Address verbose_malloc(Cell size)
178: {
179: Address r;
180: /* leave a little room (64B) for stack underflows */
181: if ((r = malloc(size+64))==NULL) {
182: perror(progname);
183: exit(1);
184: }
185: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
186: if (debug)
187: fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
188: return r;
189: }
190:
1.1 anton 191: Address my_alloc(Cell size)
192: {
1.5 jwilke 193: #if HAVE_MMAP
1.1 anton 194: static Address next_address=0;
195: Address r;
196:
197: #if defined(MAP_ANON)
198: if (debug)
199: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
200: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
201: #else /* !defined(MAP_ANON) */
1.17 anton 202: /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are
203: apparently defaults) */
1.1 anton 204: #ifndef MAP_FILE
205: # define MAP_FILE 0
206: #endif
207: #ifndef MAP_PRIVATE
208: # define MAP_PRIVATE 0
209: #endif
210: static int dev_zero=-1;
211:
212: if (dev_zero == -1)
213: dev_zero = open("/dev/zero", O_RDONLY);
214: if (dev_zero == -1) {
215: r = (Address)-1;
216: if (debug)
217: fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
218: strerror(errno));
219: } else {
220: if (debug)
221: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
222: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
223: }
224: #endif /* !defined(MAP_ANON) */
225:
226: if (r != (Address)-1) {
227: if (debug)
228: fprintf(stderr, "success, address=$%lx\n", (long) r);
1.24 anton 229: if (pagesize != 1)
1.1 anton 230: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
231: return r;
232: }
233: if (debug)
234: fprintf(stderr, "failed: %s\n", strerror(errno));
235: #endif /* HAVE_MMAP */
1.3 anton 236: /* use malloc as fallback */
237: return verbose_malloc(size);
1.1 anton 238: }
239:
1.3 anton 240: #if (defined(mips) && !defined(INDIRECT_THREADED))
241: /* the 256MB jump restriction on the MIPS architecture makes the
242: combination of direct threading and mmap unsafe. */
243: #define dict_alloc(size) verbose_malloc(size)
244: #else
245: #define dict_alloc(size) my_alloc(size)
246: #endif
247:
1.10 pazsan 248: void set_stack_sizes(ImageHeader * header)
249: {
250: if (dictsize==0)
251: dictsize = header->dict_size;
252: if (dsize==0)
253: dsize = header->data_stack_size;
254: if (rsize==0)
255: rsize = header->return_stack_size;
256: if (fsize==0)
257: fsize = header->fp_stack_size;
258: if (lsize==0)
259: lsize = header->locals_stack_size;
260: dictsize=maxaligned(dictsize);
261: dsize=maxaligned(dsize);
262: rsize=maxaligned(rsize);
263: lsize=maxaligned(lsize);
264: fsize=maxaligned(fsize);
265: }
266:
267: void alloc_stacks(ImageHeader * header)
268: {
269: header->dict_size=dictsize;
270: header->data_stack_size=dsize;
271: header->fp_stack_size=fsize;
272: header->return_stack_size=rsize;
273: header->locals_stack_size=lsize;
274:
275: header->data_stack_base=my_alloc(dsize);
276: header->fp_stack_base=my_alloc(fsize);
277: header->return_stack_base=my_alloc(rsize);
278: header->locals_stack_base=my_alloc(lsize);
279: }
280:
1.11 pazsan 281: int go_forth(Address image, int stack, Cell *entries)
282: {
1.18 anton 283: ImageHeader *image_header = (ImageHeader *)image;
284: Cell *sp0=(Cell*)(image_header->data_stack_base + dsize);
285: Float *fp0=(Float *)(image_header->fp_stack_base + fsize);
286: Cell *rp0=(Cell *)(image_header->return_stack_base + rsize);
287: Address lp0=image_header->locals_stack_base + lsize;
288: Xt *ip0=(Xt *)(image_header->boot_entry);
1.13 pazsan 289: #ifdef SYSSIGNALS
1.11 pazsan 290: int throw_code;
1.13 pazsan 291: #endif
1.11 pazsan 292:
293: /* ensure that the cached elements (if any) are accessible */
1.18 anton 294: IF_TOS(sp0--);
295: IF_FTOS(fp0--);
1.11 pazsan 296:
297: for(;stack>0;stack--)
1.18 anton 298: *--sp0=entries[stack-1];
1.11 pazsan 299:
300: get_winsize();
301:
1.13 pazsan 302: #ifdef SYSSIGNALS
1.11 pazsan 303: install_signal_handlers(); /* right place? */
304:
305: if ((throw_code=setjmp(throw_jmp_buf))) {
306: static Cell signal_data_stack[8];
307: static Cell signal_return_stack[8];
308: static Float signal_fp_stack[1];
1.13 pazsan 309:
1.11 pazsan 310: signal_data_stack[7]=throw_code;
1.18 anton 311:
312: #ifdef GFORTH_DEBUGGING
313: if (rp <= rp0 && rp > (Cell *)(image_header->return_stack_base+5)) {
314: /* no rstack overflow or underflow */
315: rp0 = rp;
316: *--rp0 = ip;
317: }
318: else /* I love non-syntactic ifdefs :-) */
319: #endif
320: rp0 = signal_return_stack+8;
1.25 ! anton 321: /* fprintf(stderr, "rp=$%x\n",rp0);*/
1.11 pazsan 322:
1.18 anton 323: return((int)engine(image_header->throw_entry, signal_data_stack+7,
324: rp0, signal_fp_stack, 0));
1.11 pazsan 325: }
1.13 pazsan 326: #endif
1.11 pazsan 327:
1.18 anton 328: return((int)engine(ip0,sp0,rp0,fp0,lp0));
1.11 pazsan 329: }
330:
1.21 anton 331:
332: void print_sizes(Cell sizebyte)
333: /* print size information */
334: {
335: static char* endianstring[]= { " big","little" };
336:
337: fprintf(stderr,"%s endian, cell=%d bytes, char=%d bytes, au=%d bytes\n",
338: endianstring[sizebyte & 1],
339: 1 << ((sizebyte >> 1) & 3),
340: 1 << ((sizebyte >> 3) & 3),
341: 1 << ((sizebyte >> 5) & 3));
342: }
343:
1.11 pazsan 344: #ifndef INCLUDE_IMAGE
1.1 anton 345: Address loader(FILE *imagefile, char* filename)
346: /* returns the address of the image proper (after the preamble) */
347: {
348: ImageHeader header;
349: Address image;
350: Address imp; /* image+preamble */
1.17 anton 351: Char magic[8];
352: char magic7; /* size byte of magic number */
1.1 anton 353: Cell preamblesize=0;
354: Label *symbols = engine(0,0,0,0,0);
1.6 pazsan 355: Cell data_offset = offset_image ? 56*sizeof(Cell) : 0;
1.1 anton 356: UCell check_sum;
1.15 pazsan 357: Cell ausize = ((RELINFOBITS == 8) ? 0 :
358: (RELINFOBITS == 16) ? 1 :
359: (RELINFOBITS == 32) ? 2 : 3);
360: Cell charsize = ((sizeof(Char) == 1) ? 0 :
361: (sizeof(Char) == 2) ? 1 :
362: (sizeof(Char) == 4) ? 2 : 3) + ausize;
363: Cell cellsize = ((sizeof(Cell) == 1) ? 0 :
364: (sizeof(Cell) == 2) ? 1 :
365: (sizeof(Cell) == 4) ? 2 : 3) + ausize;
1.21 anton 366: Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) +
367: #ifdef WORDS_BIGENDIAN
368: 0
369: #else
370: 1
371: #endif
372: ;
1.1 anton 373:
374: #ifndef DOUBLY_INDIRECT
375: check_sum = checksum(symbols);
376: #else /* defined(DOUBLY_INDIRECT) */
377: check_sum = (UCell)symbols;
378: #endif /* defined(DOUBLY_INDIRECT) */
1.10 pazsan 379:
380: do {
381: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.15 pazsan 382: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.4) image.\n",
1.10 pazsan 383: progname, filename);
384: exit(1);
1.1 anton 385: }
1.10 pazsan 386: preamblesize+=8;
1.15 pazsan 387: } while(memcmp(magic,"Gforth2",7));
1.17 anton 388: magic7 = magic[7];
1.1 anton 389: if (debug) {
1.17 anton 390: magic[7]='\0';
1.21 anton 391: fprintf(stderr,"Magic found: %s ", magic);
392: print_sizes(magic7);
1.1 anton 393: }
394:
1.21 anton 395: if (magic7 != sizebyte)
396: {
397: fprintf(stderr,"This image is: ");
398: print_sizes(magic7);
399: fprintf(stderr,"whereas the machine is ");
400: print_sizes(sizebyte);
1.1 anton 401: exit(-2);
402: };
403:
404: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.10 pazsan 405:
406: set_stack_sizes(&header);
1.1 anton 407:
408: #if HAVE_GETPAGESIZE
409: pagesize=getpagesize(); /* Linux/GNU libc offers this */
410: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
411: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
412: #elif PAGESIZE
413: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
414: #endif
415: if (debug)
1.5 jwilke 416: fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 417:
1.3 anton 418: image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset;
1.1 anton 419: rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */
420: if (clear_dictionary)
1.10 pazsan 421: memset(image, 0, dictsize);
422: fread(image, 1, preamblesize+header.image_size, imagefile);
1.1 anton 423: imp=image+preamblesize;
424: if(header.base==0) {
425: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
426: char reloc_bits[reloc_size];
1.10 pazsan 427: fread(reloc_bits, 1, reloc_size, imagefile);
428: relocate((Cell *)imp, reloc_bits, header.image_size, symbols);
1.1 anton 429: #if 0
430: { /* let's see what the relocator did */
431: FILE *snapshot=fopen("snapshot.fi","wb");
432: fwrite(image,1,imagesize,snapshot);
433: fclose(snapshot);
434: }
435: #endif
436: }
437: else if(header.base!=imp) {
438: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
439: progname, (unsigned long)header.base, (unsigned long)imp);
440: exit(1);
441: }
442: if (header.checksum==0)
443: ((ImageHeader *)imp)->checksum=check_sum;
444: else if (header.checksum != check_sum) {
445: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
446: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
447: exit(1);
448: }
449: fclose(imagefile);
450:
1.10 pazsan 451: alloc_stacks((ImageHeader *)imp);
1.1 anton 452:
453: CACHE_FLUSH(imp, header.image_size);
454:
455: return imp;
456: }
457:
458: int onlypath(char *file)
1.10 pazsan 459: {
460: int i;
1.1 anton 461: i=strlen(file);
1.10 pazsan 462: while (i) {
463: if (file[i]=='\\' || file[i]=='/') break;
464: i--;
465: }
466: return i;
1.1 anton 467: }
468:
469: FILE *openimage(char *fullfilename)
1.10 pazsan 470: {
471: FILE *image_file;
472:
1.1 anton 473: image_file=fopen(fullfilename,"rb");
474: if (image_file!=NULL && debug)
1.10 pazsan 475: fprintf(stderr, "Opened image file: %s\n", fullfilename);
476: return image_file;
1.1 anton 477: }
478:
479: FILE *checkimage(char *path, int len, char *imagename)
1.10 pazsan 480: {
481: int dirlen=len;
1.1 anton 482: char fullfilename[dirlen+strlen(imagename)+2];
1.10 pazsan 483:
1.1 anton 484: memcpy(fullfilename, path, dirlen);
485: if (fullfilename[dirlen-1]!='/')
486: fullfilename[dirlen++]='/';
487: strcpy(fullfilename+dirlen,imagename);
1.10 pazsan 488: return openimage(fullfilename);
1.1 anton 489: }
490:
1.10 pazsan 491: FILE * open_image_file(char * imagename, char * path)
1.1 anton 492: {
1.10 pazsan 493: FILE * image_file=NULL;
494:
495: if(strchr(imagename, '/')==NULL) {
496: /* first check the directory where the exe file is in !! 01may97jaw */
497: if (onlypath(progname))
498: image_file=checkimage(progname, onlypath(progname), imagename);
499: if (!image_file)
500: do {
501: char *pend=strchr(path, PATHSEP);
502: if (pend==NULL)
503: pend=path+strlen(path);
504: if (strlen(path)==0) break;
505: image_file=checkimage(path, pend-path, imagename);
506: path=pend+(*pend==PATHSEP);
507: } while (image_file==NULL);
508: } else {
509: image_file=openimage(imagename);
510: }
1.1 anton 511:
1.10 pazsan 512: if (!image_file) {
513: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
514: progname, imagename, path);
515: exit(1);
1.7 anton 516: }
517:
1.10 pazsan 518: return image_file;
519: }
1.11 pazsan 520: #endif
521:
522: #ifdef HAS_OS
523: UCell convsize(char *s, UCell elemsize)
524: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
525: of bytes. the letter at the end indicates the unit, where e stands
526: for the element size. default is e */
527: {
528: char *endp;
529: UCell n,m;
530:
531: m = elemsize;
532: n = strtoul(s,&endp,0);
533: if (endp!=NULL) {
534: if (strcmp(endp,"b")==0)
535: m=1;
536: else if (strcmp(endp,"k")==0)
537: m=1024;
538: else if (strcmp(endp,"M")==0)
539: m=1024*1024;
540: else if (strcmp(endp,"G")==0)
541: m=1024*1024*1024;
542: else if (strcmp(endp,"T")==0) {
543: #if (SIZEOF_CHAR_P > 4)
1.24 anton 544: m=1024L*1024*1024*1024;
1.11 pazsan 545: #else
546: fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp);
547: exit(1);
548: #endif
549: } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
550: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
551: exit(1);
552: }
553: }
554: return n*m;
555: }
1.10 pazsan 556:
557: void gforth_args(int argc, char ** argv, char ** path, char ** imagename)
558: {
559: int c;
560:
1.1 anton 561: opterr=0;
562: while (1) {
563: int option_index=0;
564: static struct option opts[] = {
565: {"image-file", required_argument, NULL, 'i'},
566: {"dictionary-size", required_argument, NULL, 'm'},
567: {"data-stack-size", required_argument, NULL, 'd'},
568: {"return-stack-size", required_argument, NULL, 'r'},
569: {"fp-stack-size", required_argument, NULL, 'f'},
570: {"locals-stack-size", required_argument, NULL, 'l'},
571: {"path", required_argument, NULL, 'p'},
572: {"version", no_argument, NULL, 'v'},
573: {"help", no_argument, NULL, 'h'},
574: /* put something != 0 into offset_image */
575: {"offset-image", no_argument, &offset_image, 1},
576: {"no-offset-im", no_argument, &offset_image, 0},
577: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 578: {"die-on-signal", no_argument, &die_on_signal, 1},
1.1 anton 579: {"debug", no_argument, &debug, 1},
580: {0,0,0,0}
581: /* no-init-file, no-rc? */
582: };
583:
584: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index);
585:
586: if (c==EOF)
587: break;
588: if (c=='?') {
589: optind--;
590: break;
591: }
592: switch (c) {
1.10 pazsan 593: case 'i': *imagename = optarg; break;
1.1 anton 594: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
595: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
596: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
597: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
598: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.10 pazsan 599: case 'p': *path = optarg; break;
1.8 anton 600: case 'v': fprintf(stderr, "gforth %s\n", VERSION); exit(0);
1.1 anton 601: case 'h':
602: fprintf(stderr, "Usage: %s [engine options] [image arguments]\n\
603: Engine Options:\n\
1.10 pazsan 604: --clear-dictionary Initialize the dictionary with 0 bytes\n\
605: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
606: --debug Print debugging information during startup\n\
607: --die-on-signal exit instead of CATCHing some signals\n\
608: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
609: -h, --help Print this message and exit\n\
610: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
611: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
612: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
613: --no-offset-im Load image at normal position\n\
614: --offset-image Load image at a different position\n\
615: -p PATH, --path=PATH Search path for finding image and sources\n\
616: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
617: -v, --version Print version and exit\n\
1.1 anton 618: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.10 pazsan 619: `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n",
620: argv[0]);
621: optind--;
622: return;
623: exit(0);
1.1 anton 624: }
625: }
1.10 pazsan 626: }
1.11 pazsan 627: #endif
1.10 pazsan 628:
629: #ifdef INCLUDE_IMAGE
630: extern Cell image[];
631: extern const char reloc_bits[];
632: #endif
633:
634: int main(int argc, char **argv, char **env)
635: {
636: char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
1.13 pazsan 637: #ifndef INCLUDE_IMAGE
1.10 pazsan 638: char *imagename="gforth.fi";
639: FILE *image_file;
640: Address image;
641: #endif
642: int retvalue;
643:
644: #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED)
645: /* turn on alignment checks on the 486.
646: * on the 386 this should have no effect. */
647: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
648: /* this is unusable with Linux' libc.4.6.27, because this library is
649: not alignment-clean; we would have to replace some library
650: functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep
651: the stack FP-aligned. */
652: #endif
653:
654: /* buffering of the user output device */
1.11 pazsan 655: #ifdef _IONBF
1.10 pazsan 656: if (isatty(fileno(stdout))) {
657: fflush(stdout);
658: setvbuf(stdout,NULL,_IONBF,0);
1.1 anton 659: }
1.11 pazsan 660: #endif
1.1 anton 661:
1.10 pazsan 662: progname = argv[0];
663:
1.11 pazsan 664: #ifdef HAS_OS
1.10 pazsan 665: gforth_args(argc, argv, &path, &imagename);
1.11 pazsan 666: #endif
1.10 pazsan 667:
668: #ifdef INCLUDE_IMAGE
669: set_stack_sizes((ImageHeader *)image);
1.22 pazsan 670: if(((ImageHeader *)image)->base != image)
671: relocate(image, reloc_bits, ((ImageHeader *)image)->image_size,
672: (Label*)engine(0, 0, 0, 0, 0));
1.10 pazsan 673: alloc_stacks((ImageHeader *)image);
674: #else
675: image_file = open_image_file(imagename, path);
676: image = loader(image_file, imagename);
677: #endif
1.24 anton 678: gforth_header=(ImageHeader *)image; /* used in SIGSEGV handler */
1.1 anton 679:
680: {
1.10 pazsan 681: char path2[strlen(path)+1];
1.1 anton 682: char *p1, *p2;
683: Cell environ[]= {
684: (Cell)argc-(optind-1),
685: (Cell)(argv+(optind-1)),
1.10 pazsan 686: (Cell)strlen(path),
1.1 anton 687: (Cell)path2};
688: argv[optind-1] = progname;
689: /*
690: for (i=0; i<environ[0]; i++)
691: printf("%s\n", ((char **)(environ[1]))[i]);
692: */
693: /* make path OS-independent by replacing path separators with NUL */
1.10 pazsan 694: for (p1=path, p2=path2; *p1!='\0'; p1++, p2++)
1.1 anton 695: if (*p1==PATHSEP)
696: *p2 = '\0';
697: else
698: *p2 = *p1;
699: *p2='\0';
1.10 pazsan 700: retvalue = go_forth(image, 4, environ);
1.1 anton 701: deprep_terminal();
702: }
1.13 pazsan 703: return retvalue;
1.1 anton 704: }
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