Annotation of gforth/engine/main.c, revision 1.32
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>
1.32 ! pazsan 31: #ifndef STANDALONE
1.1 anton 32: #include <sys/stat.h>
1.32 ! pazsan 33: #endif
1.1 anton 34: #include <fcntl.h>
35: #include <assert.h>
36: #include <stdlib.h>
1.11 pazsan 37: #ifndef STANDALONE
1.1 anton 38: #if HAVE_SYS_MMAN_H
39: #include <sys/mman.h>
40: #endif
1.11 pazsan 41: #endif
1.1 anton 42: #include "forth.h"
43: #include "io.h"
44: #include "getopt.h"
1.11 pazsan 45: #ifdef STANDALONE
46: #include <systypes.h>
47: #endif
1.1 anton 48:
49: #define PRIM_VERSION 1
50: /* increment this whenever the primitives change in an incompatible way */
51:
1.14 pazsan 52: #ifndef DEFAULTPATH
1.16 pazsan 53: # define DEFAULTPATH "~+"
1.14 pazsan 54: #endif
55:
1.1 anton 56: #ifdef MSDOS
57: jmp_buf throw_jmp_buf;
58: #endif
59:
60: #if defined(DIRECT_THREADED)
61: # define CA(n) (symbols[(n)])
62: #else
63: # define CA(n) ((Cell)(symbols+(n)))
64: #endif
65:
66: #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float))
67:
68: static UCell dictsize=0;
69: static UCell dsize=0;
70: static UCell rsize=0;
71: static UCell fsize=0;
72: static UCell lsize=0;
73: int offset_image=0;
1.4 anton 74: int die_on_signal=0;
1.13 pazsan 75: #ifndef INCLUDE_IMAGE
1.1 anton 76: static int clear_dictionary=0;
1.24 anton 77: UCell pagesize=1;
1.22 pazsan 78: char *progname;
79: #else
80: char *progname = "gforth";
81: int optind = 1;
1.13 pazsan 82: #endif
1.31 pazsan 83:
1.30 pazsan 84: #ifdef HAS_DEBUG
1.1 anton 85: static int debug=0;
1.31 pazsan 86: #else
87: # define debug 0
88: # define perror(x...)
89: # define fprintf(x...)
1.30 pazsan 90: #endif
1.31 pazsan 91:
1.24 anton 92: ImageHeader *gforth_header;
1.1 anton 93:
1.30 pazsan 94: #ifdef MEMCMP_AS_SUBROUTINE
95: int gforth_memcmp(const char * s1, const char * s2, size_t n)
96: {
97: return memcmp(s1, s2, n);
98: }
99: #endif
100:
1.1 anton 101: /* image file format:
1.15 pazsan 102: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
1.1 anton 103: * padding to a multiple of 8
1.15 pazsan 104: * magic: "Gforth2x" means format 0.4,
105: * where x is a byte with
106: * bit 7: reserved = 0
107: * bit 6:5: address unit size 2^n octets
108: * bit 4:3: character size 2^n octets
109: * bit 2:1: cell size 2^n octets
110: * bit 0: endian, big=0, little=1.
111: * The magic are always 8 octets, no matter what the native AU/character size is
1.1 anton 112: * padding to max alignment (no padding necessary on current machines)
1.24 anton 113: * ImageHeader structure (see forth.h)
1.1 anton 114: * data (size in ImageHeader.image_size)
115: * tags ((if relocatable, 1 bit/data cell)
116: *
117: * tag==1 means that the corresponding word is an address;
118: * If the word is >=0, the address is within the image;
119: * addresses within the image are given relative to the start of the image.
120: * If the word =-1 (CF_NIL), the address is NIL,
121: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
122: * If the word =CF(DODOES), it's a DOES> CFA
123: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
124: * possibly containing a jump to dodoes)
125: * If the word is <CF(DOESJUMP), it's a primitive
126: */
127:
1.10 pazsan 128: void relocate(Cell *image, const char *bitstring, int size, Label symbols[])
1.1 anton 129: {
1.16 pazsan 130: int i=0, j, k, steps=(size/sizeof(Cell))/RELINFOBITS;
1.11 pazsan 131: Cell token;
1.1 anton 132: char bits;
133:
134: /* printf("relocating %x[%x]\n", image, size); */
135:
1.31 pazsan 136: for(k=0; k<=steps; k++) {
1.13 pazsan 137: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.1 anton 138: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
1.13 pazsan 139: if(bits & (1U << (RELINFOBITS-1))) {
1.1 anton 140: /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/
1.11 pazsan 141: if((token=image[i])<0)
142: switch(token)
1.1 anton 143: {
144: case CF_NIL : image[i]=0; break;
145: #if !defined(DOUBLY_INDIRECT)
146: case CF(DOCOL) :
147: case CF(DOVAR) :
148: case CF(DOCON) :
149: case CF(DOUSER) :
150: case CF(DODEFER) :
1.11 pazsan 151: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break;
1.1 anton 152: case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break;
153: #endif /* !defined(DOUBLY_INDIRECT) */
154: case CF(DODOES) :
155: MAKE_DOES_CF(image+i,image[i+1]+((Cell)image));
156: break;
157: default :
158: /* printf("Code field generation image[%x]:=CA(%x)\n",
159: i, CF(image[i])); */
1.11 pazsan 160: image[i]=(Cell)CA(CF(token));
1.1 anton 161: }
162: else
163: image[i]+=(Cell)image;
164: }
165: }
1.31 pazsan 166: }
1.26 jwilke 167: ((ImageHeader*)(image))->base = (Address) image;
1.1 anton 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);
1.24 anton 246: if (pagesize != 1)
1.1 anton 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:
1.30 pazsan 317: #ifdef SYSSIGNALS
1.11 pazsan 318: get_winsize();
319:
320: install_signal_handlers(); /* right place? */
321:
322: if ((throw_code=setjmp(throw_jmp_buf))) {
323: static Cell signal_data_stack[8];
324: static Cell signal_return_stack[8];
325: static Float signal_fp_stack[1];
1.13 pazsan 326:
1.11 pazsan 327: signal_data_stack[7]=throw_code;
1.18 anton 328:
329: #ifdef GFORTH_DEBUGGING
330: if (rp <= rp0 && rp > (Cell *)(image_header->return_stack_base+5)) {
331: /* no rstack overflow or underflow */
332: rp0 = rp;
1.27 anton 333: *--rp0 = (Cell)ip;
1.18 anton 334: }
335: else /* I love non-syntactic ifdefs :-) */
336: #endif
337: rp0 = signal_return_stack+8;
1.25 anton 338: /* fprintf(stderr, "rp=$%x\n",rp0);*/
1.11 pazsan 339:
1.18 anton 340: return((int)engine(image_header->throw_entry, signal_data_stack+7,
341: rp0, signal_fp_stack, 0));
1.11 pazsan 342: }
1.13 pazsan 343: #endif
1.11 pazsan 344:
1.18 anton 345: return((int)engine(ip0,sp0,rp0,fp0,lp0));
1.11 pazsan 346: }
347:
1.21 anton 348:
1.30 pazsan 349: #ifndef INCLUDE_IMAGE
1.21 anton 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:
1.1 anton 362: Address loader(FILE *imagefile, char* filename)
363: /* returns the address of the image proper (after the preamble) */
364: {
365: ImageHeader header;
366: Address image;
367: Address imp; /* image+preamble */
1.17 anton 368: Char magic[8];
369: char magic7; /* size byte of magic number */
1.1 anton 370: Cell preamblesize=0;
371: Label *symbols = engine(0,0,0,0,0);
1.6 pazsan 372: Cell data_offset = offset_image ? 56*sizeof(Cell) : 0;
1.1 anton 373: UCell check_sum;
1.15 pazsan 374: Cell ausize = ((RELINFOBITS == 8) ? 0 :
375: (RELINFOBITS == 16) ? 1 :
376: (RELINFOBITS == 32) ? 2 : 3);
377: Cell charsize = ((sizeof(Char) == 1) ? 0 :
378: (sizeof(Char) == 2) ? 1 :
379: (sizeof(Char) == 4) ? 2 : 3) + ausize;
380: Cell cellsize = ((sizeof(Cell) == 1) ? 0 :
381: (sizeof(Cell) == 2) ? 1 :
382: (sizeof(Cell) == 4) ? 2 : 3) + ausize;
1.21 anton 383: Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) +
384: #ifdef WORDS_BIGENDIAN
385: 0
386: #else
387: 1
388: #endif
389: ;
1.1 anton 390:
391: #ifndef DOUBLY_INDIRECT
392: check_sum = checksum(symbols);
393: #else /* defined(DOUBLY_INDIRECT) */
394: check_sum = (UCell)symbols;
395: #endif /* defined(DOUBLY_INDIRECT) */
1.10 pazsan 396:
397: do {
398: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.15 pazsan 399: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.4) image.\n",
1.10 pazsan 400: progname, filename);
401: exit(1);
1.1 anton 402: }
1.10 pazsan 403: preamblesize+=8;
1.15 pazsan 404: } while(memcmp(magic,"Gforth2",7));
1.17 anton 405: magic7 = magic[7];
1.1 anton 406: if (debug) {
1.17 anton 407: magic[7]='\0';
1.21 anton 408: fprintf(stderr,"Magic found: %s ", magic);
409: print_sizes(magic7);
1.1 anton 410: }
411:
1.21 anton 412: if (magic7 != sizebyte)
413: {
414: fprintf(stderr,"This image is: ");
415: print_sizes(magic7);
416: fprintf(stderr,"whereas the machine is ");
417: print_sizes(sizebyte);
1.1 anton 418: exit(-2);
419: };
420:
421: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.10 pazsan 422:
423: set_stack_sizes(&header);
1.1 anton 424:
425: #if HAVE_GETPAGESIZE
426: pagesize=getpagesize(); /* Linux/GNU libc offers this */
427: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
428: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
429: #elif PAGESIZE
430: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
431: #endif
432: if (debug)
1.5 jwilke 433: fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 434:
1.3 anton 435: image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset;
1.1 anton 436: rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */
437: if (clear_dictionary)
1.10 pazsan 438: memset(image, 0, dictsize);
439: fread(image, 1, preamblesize+header.image_size, imagefile);
1.1 anton 440: imp=image+preamblesize;
441: if(header.base==0) {
442: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
443: char reloc_bits[reloc_size];
1.10 pazsan 444: fread(reloc_bits, 1, reloc_size, imagefile);
445: relocate((Cell *)imp, reloc_bits, header.image_size, symbols);
1.1 anton 446: #if 0
447: { /* let's see what the relocator did */
448: FILE *snapshot=fopen("snapshot.fi","wb");
449: fwrite(image,1,imagesize,snapshot);
450: fclose(snapshot);
451: }
452: #endif
453: }
454: else if(header.base!=imp) {
455: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
456: progname, (unsigned long)header.base, (unsigned long)imp);
457: exit(1);
458: }
459: if (header.checksum==0)
460: ((ImageHeader *)imp)->checksum=check_sum;
461: else if (header.checksum != check_sum) {
462: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
463: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
464: exit(1);
465: }
466: fclose(imagefile);
467:
1.10 pazsan 468: alloc_stacks((ImageHeader *)imp);
1.1 anton 469:
470: CACHE_FLUSH(imp, header.image_size);
471:
472: return imp;
473: }
474:
1.28 anton 475: /* index of last '/' or '\' in file, 0 if there is none. !! Hmm, could
476: be implemented with strrchr and the separator should be
477: OS-dependent */
1.1 anton 478: int onlypath(char *file)
1.10 pazsan 479: {
480: int i;
1.1 anton 481: i=strlen(file);
1.10 pazsan 482: while (i) {
483: if (file[i]=='\\' || file[i]=='/') break;
484: i--;
485: }
486: return i;
1.1 anton 487: }
488:
489: FILE *openimage(char *fullfilename)
1.10 pazsan 490: {
491: FILE *image_file;
1.28 anton 492: char * expfilename = tilde_cstr(fullfilename, strlen(fullfilename), 1);
1.10 pazsan 493:
1.28 anton 494: image_file=fopen(expfilename,"rb");
1.1 anton 495: if (image_file!=NULL && debug)
1.28 anton 496: fprintf(stderr, "Opened image file: %s\n", expfilename);
1.10 pazsan 497: return image_file;
1.1 anton 498: }
499:
1.28 anton 500: /* try to open image file concat(path[0:len],imagename) */
1.1 anton 501: FILE *checkimage(char *path, int len, char *imagename)
1.10 pazsan 502: {
503: int dirlen=len;
1.1 anton 504: char fullfilename[dirlen+strlen(imagename)+2];
1.10 pazsan 505:
1.1 anton 506: memcpy(fullfilename, path, dirlen);
507: if (fullfilename[dirlen-1]!='/')
508: fullfilename[dirlen++]='/';
509: strcpy(fullfilename+dirlen,imagename);
1.10 pazsan 510: return openimage(fullfilename);
1.1 anton 511: }
512:
1.10 pazsan 513: FILE * open_image_file(char * imagename, char * path)
1.1 anton 514: {
1.10 pazsan 515: FILE * image_file=NULL;
1.28 anton 516: char *origpath=path;
1.10 pazsan 517:
518: if(strchr(imagename, '/')==NULL) {
519: /* first check the directory where the exe file is in !! 01may97jaw */
520: if (onlypath(progname))
521: image_file=checkimage(progname, onlypath(progname), imagename);
522: if (!image_file)
523: do {
524: char *pend=strchr(path, PATHSEP);
525: if (pend==NULL)
526: pend=path+strlen(path);
527: if (strlen(path)==0) break;
528: image_file=checkimage(path, pend-path, imagename);
529: path=pend+(*pend==PATHSEP);
530: } while (image_file==NULL);
531: } else {
532: image_file=openimage(imagename);
533: }
1.1 anton 534:
1.10 pazsan 535: if (!image_file) {
536: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
1.28 anton 537: progname, imagename, origpath);
1.10 pazsan 538: exit(1);
1.7 anton 539: }
540:
1.10 pazsan 541: return image_file;
542: }
1.11 pazsan 543: #endif
544:
545: #ifdef HAS_OS
546: UCell convsize(char *s, UCell elemsize)
547: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
548: of bytes. the letter at the end indicates the unit, where e stands
549: for the element size. default is e */
550: {
551: char *endp;
552: UCell n,m;
553:
554: m = elemsize;
555: n = strtoul(s,&endp,0);
556: if (endp!=NULL) {
557: if (strcmp(endp,"b")==0)
558: m=1;
559: else if (strcmp(endp,"k")==0)
560: m=1024;
561: else if (strcmp(endp,"M")==0)
562: m=1024*1024;
563: else if (strcmp(endp,"G")==0)
564: m=1024*1024*1024;
565: else if (strcmp(endp,"T")==0) {
566: #if (SIZEOF_CHAR_P > 4)
1.24 anton 567: m=1024L*1024*1024*1024;
1.11 pazsan 568: #else
569: fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp);
570: exit(1);
571: #endif
572: } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
573: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
574: exit(1);
575: }
576: }
577: return n*m;
578: }
1.10 pazsan 579:
580: void gforth_args(int argc, char ** argv, char ** path, char ** imagename)
581: {
582: int c;
583:
1.1 anton 584: opterr=0;
585: while (1) {
586: int option_index=0;
587: static struct option opts[] = {
1.29 anton 588: {"appl-image", required_argument, NULL, 'a'},
1.1 anton 589: {"image-file", required_argument, NULL, 'i'},
590: {"dictionary-size", required_argument, NULL, 'm'},
591: {"data-stack-size", required_argument, NULL, 'd'},
592: {"return-stack-size", required_argument, NULL, 'r'},
593: {"fp-stack-size", required_argument, NULL, 'f'},
594: {"locals-stack-size", required_argument, NULL, 'l'},
595: {"path", required_argument, NULL, 'p'},
596: {"version", no_argument, NULL, 'v'},
597: {"help", no_argument, NULL, 'h'},
598: /* put something != 0 into offset_image */
599: {"offset-image", no_argument, &offset_image, 1},
600: {"no-offset-im", no_argument, &offset_image, 0},
601: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 602: {"die-on-signal", no_argument, &die_on_signal, 1},
1.1 anton 603: {"debug", no_argument, &debug, 1},
604: {0,0,0,0}
605: /* no-init-file, no-rc? */
606: };
607:
608: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index);
609:
610: switch (c) {
1.29 anton 611: case EOF: return;
612: case '?': optind--; return;
613: case 'a': *imagename = optarg; return;
1.10 pazsan 614: case 'i': *imagename = optarg; break;
1.1 anton 615: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
616: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
617: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
618: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
619: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.10 pazsan 620: case 'p': *path = optarg; break;
1.8 anton 621: case 'v': fprintf(stderr, "gforth %s\n", VERSION); exit(0);
1.1 anton 622: case 'h':
1.29 anton 623: fprintf(stderr, "Usage: %s [engine options] ['--'] [image arguments]\n\
1.1 anton 624: Engine Options:\n\
1.29 anton 625: --appl-image FILE equivalent to '--image-file=FILE --'\n\
1.10 pazsan 626: --clear-dictionary Initialize the dictionary with 0 bytes\n\
627: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
628: --debug Print debugging information during startup\n\
629: --die-on-signal exit instead of CATCHing some signals\n\
630: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
631: -h, --help Print this message and exit\n\
632: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
633: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
634: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
635: --no-offset-im Load image at normal position\n\
636: --offset-image Load image at a different position\n\
637: -p PATH, --path=PATH Search path for finding image and sources\n\
638: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
639: -v, --version Print version and exit\n\
1.1 anton 640: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.10 pazsan 641: `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n",
642: argv[0]);
643: optind--;
644: return;
1.1 anton 645: }
646: }
1.10 pazsan 647: }
1.11 pazsan 648: #endif
1.10 pazsan 649:
650: #ifdef INCLUDE_IMAGE
651: extern Cell image[];
652: extern const char reloc_bits[];
653: #endif
654:
655: int main(int argc, char **argv, char **env)
656: {
1.30 pazsan 657: #ifdef HAS_OS
1.10 pazsan 658: char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
1.30 pazsan 659: #else
660: char *path = DEFAULTPATH;
661: #endif
1.13 pazsan 662: #ifndef INCLUDE_IMAGE
1.10 pazsan 663: char *imagename="gforth.fi";
664: FILE *image_file;
665: Address image;
666: #endif
667: int retvalue;
668:
669: #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED)
670: /* turn on alignment checks on the 486.
671: * on the 386 this should have no effect. */
672: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
673: /* this is unusable with Linux' libc.4.6.27, because this library is
674: not alignment-clean; we would have to replace some library
675: functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep
676: the stack FP-aligned. */
677: #endif
678:
679: /* buffering of the user output device */
1.11 pazsan 680: #ifdef _IONBF
1.10 pazsan 681: if (isatty(fileno(stdout))) {
682: fflush(stdout);
683: setvbuf(stdout,NULL,_IONBF,0);
1.1 anton 684: }
1.11 pazsan 685: #endif
1.1 anton 686:
1.10 pazsan 687: progname = argv[0];
688:
1.11 pazsan 689: #ifdef HAS_OS
1.10 pazsan 690: gforth_args(argc, argv, &path, &imagename);
1.11 pazsan 691: #endif
1.10 pazsan 692:
693: #ifdef INCLUDE_IMAGE
694: set_stack_sizes((ImageHeader *)image);
1.22 pazsan 695: if(((ImageHeader *)image)->base != image)
696: relocate(image, reloc_bits, ((ImageHeader *)image)->image_size,
697: (Label*)engine(0, 0, 0, 0, 0));
1.10 pazsan 698: alloc_stacks((ImageHeader *)image);
699: #else
700: image_file = open_image_file(imagename, path);
701: image = loader(image_file, imagename);
702: #endif
1.24 anton 703: gforth_header=(ImageHeader *)image; /* used in SIGSEGV handler */
1.1 anton 704:
705: {
1.10 pazsan 706: char path2[strlen(path)+1];
1.1 anton 707: char *p1, *p2;
708: Cell environ[]= {
709: (Cell)argc-(optind-1),
710: (Cell)(argv+(optind-1)),
1.10 pazsan 711: (Cell)strlen(path),
1.1 anton 712: (Cell)path2};
713: argv[optind-1] = progname;
714: /*
715: for (i=0; i<environ[0]; i++)
716: printf("%s\n", ((char **)(environ[1]))[i]);
717: */
718: /* make path OS-independent by replacing path separators with NUL */
1.10 pazsan 719: for (p1=path, p2=path2; *p1!='\0'; p1++, p2++)
1.1 anton 720: if (*p1==PATHSEP)
721: *p2 = '\0';
722: else
723: *p2 = *p1;
724: *p2='\0';
1.10 pazsan 725: retvalue = go_forth(image, 4, environ);
1.1 anton 726: deprep_terminal();
727: }
1.13 pazsan 728: return retvalue;
1.1 anton 729: }
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