Annotation of gforth/engine/main.c, revision 1.21
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;
1.13 pazsan 75: static size_t pagesize=0;
76: #endif
1.1 anton 77: static int debug=0;
78: char *progname;
79:
80: /* image file format:
1.15 pazsan 81: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
1.1 anton 82: * padding to a multiple of 8
1.15 pazsan 83: * magic: "Gforth2x" means format 0.4,
84: * where x is a byte with
85: * bit 7: reserved = 0
86: * bit 6:5: address unit size 2^n octets
87: * bit 4:3: character size 2^n octets
88: * bit 2:1: cell size 2^n octets
89: * bit 0: endian, big=0, little=1.
90: * The magic are always 8 octets, no matter what the native AU/character size is
1.1 anton 91: * padding to max alignment (no padding necessary on current machines)
92: * ImageHeader structure (see below)
93: * data (size in ImageHeader.image_size)
94: * tags ((if relocatable, 1 bit/data cell)
95: *
96: * tag==1 means that the corresponding word is an address;
97: * If the word is >=0, the address is within the image;
98: * addresses within the image are given relative to the start of the image.
99: * If the word =-1 (CF_NIL), the address is NIL,
100: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
101: * If the word =CF(DODOES), it's a DOES> CFA
102: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
103: * possibly containing a jump to dodoes)
104: * If the word is <CF(DOESJUMP), it's a primitive
105: */
106:
107: typedef struct {
108: Address base; /* base address of image (0 if relocatable) */
109: UCell checksum; /* checksum of ca's to protect against some
110: incompatible binary/executable combinations
111: (0 if relocatable) */
112: UCell image_size; /* all sizes in bytes */
113: UCell dict_size;
114: UCell data_stack_size;
115: UCell fp_stack_size;
116: UCell return_stack_size;
117: UCell locals_stack_size;
118: Xt *boot_entry; /* initial ip for booting (in BOOT) */
119: Xt *throw_entry; /* ip after signal (in THROW) */
120: Cell unused1; /* possibly tib stack size */
121: Cell unused2;
122: Address data_stack_base; /* this and the following fields are initialized by the loader */
123: Address fp_stack_base;
124: Address return_stack_base;
125: Address locals_stack_base;
126: } ImageHeader;
127: /* the image-header is created in main.fs */
128:
1.10 pazsan 129: void relocate(Cell *image, const char *bitstring, int size, Label symbols[])
1.1 anton 130: {
1.16 pazsan 131: int i=0, j, k, steps=(size/sizeof(Cell))/RELINFOBITS;
1.11 pazsan 132: Cell token;
1.1 anton 133: char bits;
134: /* static char bits[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};*/
135:
136: /* printf("relocating %x[%x]\n", image, size); */
137:
138: for(k=0; k<=steps; k++)
1.13 pazsan 139: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.1 anton 140: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
1.13 pazsan 141: if(bits & (1U << (RELINFOBITS-1))) {
1.1 anton 142: /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/
1.11 pazsan 143: if((token=image[i])<0)
144: switch(token)
1.1 anton 145: {
146: case CF_NIL : image[i]=0; break;
147: #if !defined(DOUBLY_INDIRECT)
148: case CF(DOCOL) :
149: case CF(DOVAR) :
150: case CF(DOCON) :
151: case CF(DOUSER) :
152: case CF(DODEFER) :
1.11 pazsan 153: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break;
1.1 anton 154: case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break;
155: #endif /* !defined(DOUBLY_INDIRECT) */
156: case CF(DODOES) :
157: MAKE_DOES_CF(image+i,image[i+1]+((Cell)image));
158: break;
159: default :
160: /* printf("Code field generation image[%x]:=CA(%x)\n",
161: i, CF(image[i])); */
1.11 pazsan 162: image[i]=(Cell)CA(CF(token));
1.1 anton 163: }
164: else
165: image[i]+=(Cell)image;
166: }
167: }
168: }
169:
170: UCell checksum(Label symbols[])
171: {
172: UCell r=PRIM_VERSION;
173: Cell i;
174:
175: for (i=DOCOL; i<=DOESJUMP; i++) {
176: r ^= (UCell)(symbols[i]);
177: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
178: }
179: #ifdef DIRECT_THREADED
180: /* we have to consider all the primitives */
181: for (; symbols[i]!=(Label)0; i++) {
182: r ^= (UCell)(symbols[i]);
183: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
184: }
185: #else
186: /* in indirect threaded code all primitives are accessed through the
187: symbols table, so we just have to put the base address of symbols
188: in the checksum */
189: r ^= (UCell)symbols;
190: #endif
191: return r;
192: }
193:
1.3 anton 194: Address verbose_malloc(Cell size)
195: {
196: Address r;
197: /* leave a little room (64B) for stack underflows */
198: if ((r = malloc(size+64))==NULL) {
199: perror(progname);
200: exit(1);
201: }
202: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
203: if (debug)
204: fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
205: return r;
206: }
207:
1.1 anton 208: Address my_alloc(Cell size)
209: {
1.5 jwilke 210: #if HAVE_MMAP
1.1 anton 211: static Address next_address=0;
212: Address r;
213:
214: #if defined(MAP_ANON)
215: if (debug)
216: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
217: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
218: #else /* !defined(MAP_ANON) */
1.17 anton 219: /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are
220: apparently defaults) */
1.1 anton 221: #ifndef MAP_FILE
222: # define MAP_FILE 0
223: #endif
224: #ifndef MAP_PRIVATE
225: # define MAP_PRIVATE 0
226: #endif
227: static int dev_zero=-1;
228:
229: if (dev_zero == -1)
230: dev_zero = open("/dev/zero", O_RDONLY);
231: if (dev_zero == -1) {
232: r = (Address)-1;
233: if (debug)
234: fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
235: strerror(errno));
236: } else {
237: if (debug)
238: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
239: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
240: }
241: #endif /* !defined(MAP_ANON) */
242:
243: if (r != (Address)-1) {
244: if (debug)
245: fprintf(stderr, "success, address=$%lx\n", (long) r);
246: if (pagesize != 0)
247: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
248: return r;
249: }
250: if (debug)
251: fprintf(stderr, "failed: %s\n", strerror(errno));
252: #endif /* HAVE_MMAP */
1.3 anton 253: /* use malloc as fallback */
254: return verbose_malloc(size);
1.1 anton 255: }
256:
1.3 anton 257: #if (defined(mips) && !defined(INDIRECT_THREADED))
258: /* the 256MB jump restriction on the MIPS architecture makes the
259: combination of direct threading and mmap unsafe. */
260: #define dict_alloc(size) verbose_malloc(size)
261: #else
262: #define dict_alloc(size) my_alloc(size)
263: #endif
264:
1.10 pazsan 265: void set_stack_sizes(ImageHeader * header)
266: {
267: if (dictsize==0)
268: dictsize = header->dict_size;
269: if (dsize==0)
270: dsize = header->data_stack_size;
271: if (rsize==0)
272: rsize = header->return_stack_size;
273: if (fsize==0)
274: fsize = header->fp_stack_size;
275: if (lsize==0)
276: lsize = header->locals_stack_size;
277: dictsize=maxaligned(dictsize);
278: dsize=maxaligned(dsize);
279: rsize=maxaligned(rsize);
280: lsize=maxaligned(lsize);
281: fsize=maxaligned(fsize);
282: }
283:
284: void alloc_stacks(ImageHeader * header)
285: {
286: header->dict_size=dictsize;
287: header->data_stack_size=dsize;
288: header->fp_stack_size=fsize;
289: header->return_stack_size=rsize;
290: header->locals_stack_size=lsize;
291:
292: header->data_stack_base=my_alloc(dsize);
293: header->fp_stack_base=my_alloc(fsize);
294: header->return_stack_base=my_alloc(rsize);
295: header->locals_stack_base=my_alloc(lsize);
296: }
297:
1.11 pazsan 298: int go_forth(Address image, int stack, Cell *entries)
299: {
1.18 anton 300: ImageHeader *image_header = (ImageHeader *)image;
301: Cell *sp0=(Cell*)(image_header->data_stack_base + dsize);
302: Float *fp0=(Float *)(image_header->fp_stack_base + fsize);
303: Cell *rp0=(Cell *)(image_header->return_stack_base + rsize);
304: Address lp0=image_header->locals_stack_base + lsize;
305: Xt *ip0=(Xt *)(image_header->boot_entry);
1.13 pazsan 306: #ifdef SYSSIGNALS
1.11 pazsan 307: int throw_code;
1.13 pazsan 308: #endif
1.11 pazsan 309:
310: /* ensure that the cached elements (if any) are accessible */
1.18 anton 311: IF_TOS(sp0--);
312: IF_FTOS(fp0--);
1.11 pazsan 313:
314: for(;stack>0;stack--)
1.18 anton 315: *--sp0=entries[stack-1];
1.11 pazsan 316:
1.14 pazsan 317: #if !defined(MSDOS) && !defined(SHARC) && !defined(_WIN32) && !defined(__EMX__)
1.11 pazsan 318: get_winsize();
319: #endif
320:
1.13 pazsan 321: #ifdef SYSSIGNALS
1.11 pazsan 322: install_signal_handlers(); /* right place? */
323:
324: if ((throw_code=setjmp(throw_jmp_buf))) {
325: static Cell signal_data_stack[8];
326: static Cell signal_return_stack[8];
327: static Float signal_fp_stack[1];
1.13 pazsan 328:
1.11 pazsan 329: signal_data_stack[7]=throw_code;
1.18 anton 330:
331: #ifdef GFORTH_DEBUGGING
332: if (rp <= rp0 && rp > (Cell *)(image_header->return_stack_base+5)) {
333: /* no rstack overflow or underflow */
334: rp0 = rp;
335: *--rp0 = ip;
336: }
337: else /* I love non-syntactic ifdefs :-) */
338: #endif
339: rp0 = signal_return_stack+8;
1.11 pazsan 340:
1.18 anton 341: return((int)engine(image_header->throw_entry, signal_data_stack+7,
342: rp0, signal_fp_stack, 0));
1.11 pazsan 343: }
1.13 pazsan 344: #endif
1.11 pazsan 345:
1.18 anton 346: return((int)engine(ip0,sp0,rp0,fp0,lp0));
1.11 pazsan 347: }
348:
1.21 ! anton 349:
! 350: void print_sizes(Cell sizebyte)
! 351: /* print size information */
! 352: {
! 353: static char* endianstring[]= { " big","little" };
! 354:
! 355: fprintf(stderr,"%s endian, cell=%d bytes, char=%d bytes, au=%d bytes\n",
! 356: endianstring[sizebyte & 1],
! 357: 1 << ((sizebyte >> 1) & 3),
! 358: 1 << ((sizebyte >> 3) & 3),
! 359: 1 << ((sizebyte >> 5) & 3));
! 360: }
! 361:
1.11 pazsan 362: #ifndef INCLUDE_IMAGE
1.1 anton 363: Address loader(FILE *imagefile, char* filename)
364: /* returns the address of the image proper (after the preamble) */
365: {
366: ImageHeader header;
367: Address image;
368: Address imp; /* image+preamble */
1.17 anton 369: Char magic[8];
370: char magic7; /* size byte of magic number */
1.1 anton 371: Cell preamblesize=0;
372: Label *symbols = engine(0,0,0,0,0);
1.6 pazsan 373: Cell data_offset = offset_image ? 56*sizeof(Cell) : 0;
1.1 anton 374: UCell check_sum;
1.15 pazsan 375: Cell ausize = ((RELINFOBITS == 8) ? 0 :
376: (RELINFOBITS == 16) ? 1 :
377: (RELINFOBITS == 32) ? 2 : 3);
378: Cell charsize = ((sizeof(Char) == 1) ? 0 :
379: (sizeof(Char) == 2) ? 1 :
380: (sizeof(Char) == 4) ? 2 : 3) + ausize;
381: Cell cellsize = ((sizeof(Cell) == 1) ? 0 :
382: (sizeof(Cell) == 2) ? 1 :
383: (sizeof(Cell) == 4) ? 2 : 3) + ausize;
1.21 ! anton 384: Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) +
! 385: #ifdef WORDS_BIGENDIAN
! 386: 0
! 387: #else
! 388: 1
! 389: #endif
! 390: ;
1.1 anton 391:
392: #ifndef DOUBLY_INDIRECT
393: check_sum = checksum(symbols);
394: #else /* defined(DOUBLY_INDIRECT) */
395: check_sum = (UCell)symbols;
396: #endif /* defined(DOUBLY_INDIRECT) */
1.10 pazsan 397:
398: do {
399: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.15 pazsan 400: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.4) image.\n",
1.10 pazsan 401: progname, filename);
402: exit(1);
1.1 anton 403: }
1.10 pazsan 404: preamblesize+=8;
1.15 pazsan 405: } while(memcmp(magic,"Gforth2",7));
1.17 anton 406: magic7 = magic[7];
1.1 anton 407: if (debug) {
1.17 anton 408: magic[7]='\0';
1.21 ! anton 409: fprintf(stderr,"Magic found: %s ", magic);
! 410: print_sizes(magic7);
1.1 anton 411: }
412:
1.21 ! anton 413: if (magic7 != sizebyte)
! 414: {
! 415: fprintf(stderr,"This image is: ");
! 416: print_sizes(magic7);
! 417: fprintf(stderr,"whereas the machine is ");
! 418: print_sizes(sizebyte);
1.1 anton 419: exit(-2);
420: };
421:
422: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.10 pazsan 423:
424: set_stack_sizes(&header);
1.1 anton 425:
426: #if HAVE_GETPAGESIZE
427: pagesize=getpagesize(); /* Linux/GNU libc offers this */
428: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
429: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
430: #elif PAGESIZE
431: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
432: #endif
433: if (debug)
1.5 jwilke 434: fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 435:
1.3 anton 436: image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset;
1.1 anton 437: rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */
438: if (clear_dictionary)
1.10 pazsan 439: memset(image, 0, dictsize);
440: fread(image, 1, preamblesize+header.image_size, imagefile);
1.1 anton 441: imp=image+preamblesize;
442: if(header.base==0) {
443: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
444: char reloc_bits[reloc_size];
1.10 pazsan 445: fread(reloc_bits, 1, reloc_size, imagefile);
446: relocate((Cell *)imp, reloc_bits, header.image_size, symbols);
1.1 anton 447: #if 0
448: { /* let's see what the relocator did */
449: FILE *snapshot=fopen("snapshot.fi","wb");
450: fwrite(image,1,imagesize,snapshot);
451: fclose(snapshot);
452: }
453: #endif
454: }
455: else if(header.base!=imp) {
456: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
457: progname, (unsigned long)header.base, (unsigned long)imp);
458: exit(1);
459: }
460: if (header.checksum==0)
461: ((ImageHeader *)imp)->checksum=check_sum;
462: else if (header.checksum != check_sum) {
463: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
464: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
465: exit(1);
466: }
467: fclose(imagefile);
468:
1.10 pazsan 469: alloc_stacks((ImageHeader *)imp);
1.1 anton 470:
471: CACHE_FLUSH(imp, header.image_size);
472:
473: return imp;
474: }
475:
476: int onlypath(char *file)
1.10 pazsan 477: {
478: int i;
1.1 anton 479: i=strlen(file);
1.10 pazsan 480: while (i) {
481: if (file[i]=='\\' || file[i]=='/') break;
482: i--;
483: }
484: return i;
1.1 anton 485: }
486:
487: FILE *openimage(char *fullfilename)
1.10 pazsan 488: {
489: FILE *image_file;
490:
1.1 anton 491: image_file=fopen(fullfilename,"rb");
492: if (image_file!=NULL && debug)
1.10 pazsan 493: fprintf(stderr, "Opened image file: %s\n", fullfilename);
494: return image_file;
1.1 anton 495: }
496:
497: FILE *checkimage(char *path, int len, char *imagename)
1.10 pazsan 498: {
499: int dirlen=len;
1.1 anton 500: char fullfilename[dirlen+strlen(imagename)+2];
1.10 pazsan 501:
1.1 anton 502: memcpy(fullfilename, path, dirlen);
503: if (fullfilename[dirlen-1]!='/')
504: fullfilename[dirlen++]='/';
505: strcpy(fullfilename+dirlen,imagename);
1.10 pazsan 506: return openimage(fullfilename);
1.1 anton 507: }
508:
1.10 pazsan 509: FILE * open_image_file(char * imagename, char * path)
1.1 anton 510: {
1.10 pazsan 511: FILE * image_file=NULL;
512:
513: if(strchr(imagename, '/')==NULL) {
514: /* first check the directory where the exe file is in !! 01may97jaw */
515: if (onlypath(progname))
516: image_file=checkimage(progname, onlypath(progname), imagename);
517: if (!image_file)
518: do {
519: char *pend=strchr(path, PATHSEP);
520: if (pend==NULL)
521: pend=path+strlen(path);
522: if (strlen(path)==0) break;
523: image_file=checkimage(path, pend-path, imagename);
524: path=pend+(*pend==PATHSEP);
525: } while (image_file==NULL);
526: } else {
527: image_file=openimage(imagename);
528: }
1.1 anton 529:
1.10 pazsan 530: if (!image_file) {
531: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
532: progname, imagename, path);
533: exit(1);
1.7 anton 534: }
535:
1.10 pazsan 536: return image_file;
537: }
1.11 pazsan 538: #endif
539:
540: #ifdef HAS_OS
541: UCell convsize(char *s, UCell elemsize)
542: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
543: of bytes. the letter at the end indicates the unit, where e stands
544: for the element size. default is e */
545: {
546: char *endp;
547: UCell n,m;
548:
549: m = elemsize;
550: n = strtoul(s,&endp,0);
551: if (endp!=NULL) {
552: if (strcmp(endp,"b")==0)
553: m=1;
554: else if (strcmp(endp,"k")==0)
555: m=1024;
556: else if (strcmp(endp,"M")==0)
557: m=1024*1024;
558: else if (strcmp(endp,"G")==0)
559: m=1024*1024*1024;
560: else if (strcmp(endp,"T")==0) {
561: #if (SIZEOF_CHAR_P > 4)
562: m=1024*1024*1024*1024;
563: #else
564: fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp);
565: exit(1);
566: #endif
567: } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
568: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
569: exit(1);
570: }
571: }
572: return n*m;
573: }
1.10 pazsan 574:
575: void gforth_args(int argc, char ** argv, char ** path, char ** imagename)
576: {
577: int c;
578:
1.1 anton 579: opterr=0;
580: while (1) {
581: int option_index=0;
582: static struct option opts[] = {
583: {"image-file", required_argument, NULL, 'i'},
584: {"dictionary-size", required_argument, NULL, 'm'},
585: {"data-stack-size", required_argument, NULL, 'd'},
586: {"return-stack-size", required_argument, NULL, 'r'},
587: {"fp-stack-size", required_argument, NULL, 'f'},
588: {"locals-stack-size", required_argument, NULL, 'l'},
589: {"path", required_argument, NULL, 'p'},
590: {"version", no_argument, NULL, 'v'},
591: {"help", no_argument, NULL, 'h'},
592: /* put something != 0 into offset_image */
593: {"offset-image", no_argument, &offset_image, 1},
594: {"no-offset-im", no_argument, &offset_image, 0},
595: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 596: {"die-on-signal", no_argument, &die_on_signal, 1},
1.1 anton 597: {"debug", no_argument, &debug, 1},
598: {0,0,0,0}
599: /* no-init-file, no-rc? */
600: };
601:
602: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index);
603:
604: if (c==EOF)
605: break;
606: if (c=='?') {
607: optind--;
608: break;
609: }
610: switch (c) {
1.10 pazsan 611: case 'i': *imagename = optarg; break;
1.1 anton 612: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
613: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
614: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
615: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
616: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.10 pazsan 617: case 'p': *path = optarg; break;
1.8 anton 618: case 'v': fprintf(stderr, "gforth %s\n", VERSION); exit(0);
1.1 anton 619: case 'h':
620: fprintf(stderr, "Usage: %s [engine options] [image arguments]\n\
621: Engine Options:\n\
1.10 pazsan 622: --clear-dictionary Initialize the dictionary with 0 bytes\n\
623: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
624: --debug Print debugging information during startup\n\
625: --die-on-signal exit instead of CATCHing some signals\n\
626: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
627: -h, --help Print this message and exit\n\
628: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
629: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
630: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
631: --no-offset-im Load image at normal position\n\
632: --offset-image Load image at a different position\n\
633: -p PATH, --path=PATH Search path for finding image and sources\n\
634: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
635: -v, --version Print version and exit\n\
1.1 anton 636: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.10 pazsan 637: `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n",
638: argv[0]);
639: optind--;
640: return;
641: exit(0);
1.1 anton 642: }
643: }
1.10 pazsan 644: }
1.11 pazsan 645: #endif
1.10 pazsan 646:
647: #ifdef INCLUDE_IMAGE
648: extern Cell image[];
649: extern const char reloc_bits[];
650: #endif
651:
652: int main(int argc, char **argv, char **env)
653: {
654: char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
1.13 pazsan 655: #ifndef INCLUDE_IMAGE
1.10 pazsan 656: char *imagename="gforth.fi";
657: FILE *image_file;
658: Address image;
659: #endif
660: int retvalue;
661:
662: #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED)
663: /* turn on alignment checks on the 486.
664: * on the 386 this should have no effect. */
665: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
666: /* this is unusable with Linux' libc.4.6.27, because this library is
667: not alignment-clean; we would have to replace some library
668: functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep
669: the stack FP-aligned. */
670: #endif
671:
672: /* buffering of the user output device */
1.11 pazsan 673: #ifdef _IONBF
1.10 pazsan 674: if (isatty(fileno(stdout))) {
675: fflush(stdout);
676: setvbuf(stdout,NULL,_IONBF,0);
1.1 anton 677: }
1.11 pazsan 678: #endif
1.1 anton 679:
1.10 pazsan 680: progname = argv[0];
681:
1.11 pazsan 682: #ifdef HAS_OS
1.10 pazsan 683: gforth_args(argc, argv, &path, &imagename);
1.11 pazsan 684: #endif
1.10 pazsan 685:
686: #ifdef INCLUDE_IMAGE
687: set_stack_sizes((ImageHeader *)image);
688: relocate(image, reloc_bits, ((ImageHeader*)&image)->image_size, (Label*)engine(0, 0, 0, 0, 0));
689: alloc_stacks((ImageHeader *)image);
690: #else
691: image_file = open_image_file(imagename, path);
692: image = loader(image_file, imagename);
693: #endif
1.1 anton 694:
695: {
1.10 pazsan 696: char path2[strlen(path)+1];
1.1 anton 697: char *p1, *p2;
698: Cell environ[]= {
699: (Cell)argc-(optind-1),
700: (Cell)(argv+(optind-1)),
1.10 pazsan 701: (Cell)strlen(path),
1.1 anton 702: (Cell)path2};
703: argv[optind-1] = progname;
704: /*
705: for (i=0; i<environ[0]; i++)
706: printf("%s\n", ((char **)(environ[1]))[i]);
707: */
708: /* make path OS-independent by replacing path separators with NUL */
1.10 pazsan 709: for (p1=path, p2=path2; *p1!='\0'; p1++, p2++)
1.1 anton 710: if (*p1==PATHSEP)
711: *p2 = '\0';
712: else
713: *p2 = *p1;
714: *p2='\0';
1.10 pazsan 715: retvalue = go_forth(image, 4, environ);
1.1 anton 716: deprep_terminal();
717: }
1.13 pazsan 718: return retvalue;
1.1 anton 719: }
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