Annotation of gforth/engine/main.c, revision 1.31
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
1.31 ! pazsan 81:
1.30 pazsan 82: #ifdef HAS_DEBUG
1.1 anton 83: static int debug=0;
1.31 ! pazsan 84: #else
! 85: # define debug 0
! 86: # define perror(x...)
! 87: # define fprintf(x...)
1.30 pazsan 88: #endif
1.31 ! pazsan 89:
1.24 anton 90: ImageHeader *gforth_header;
1.1 anton 91:
1.30 pazsan 92: #ifdef MEMCMP_AS_SUBROUTINE
93: int gforth_memcmp(const char * s1, const char * s2, size_t n)
94: {
95: return memcmp(s1, s2, n);
96: }
97: #endif
98:
1.1 anton 99: /* image file format:
1.15 pazsan 100: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
1.1 anton 101: * padding to a multiple of 8
1.15 pazsan 102: * magic: "Gforth2x" means format 0.4,
103: * where x is a byte with
104: * bit 7: reserved = 0
105: * bit 6:5: address unit size 2^n octets
106: * bit 4:3: character size 2^n octets
107: * bit 2:1: cell size 2^n octets
108: * bit 0: endian, big=0, little=1.
109: * The magic are always 8 octets, no matter what the native AU/character size is
1.1 anton 110: * padding to max alignment (no padding necessary on current machines)
1.24 anton 111: * ImageHeader structure (see forth.h)
1.1 anton 112: * data (size in ImageHeader.image_size)
113: * tags ((if relocatable, 1 bit/data cell)
114: *
115: * tag==1 means that the corresponding word is an address;
116: * If the word is >=0, the address is within the image;
117: * addresses within the image are given relative to the start of the image.
118: * If the word =-1 (CF_NIL), the address is NIL,
119: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
120: * If the word =CF(DODOES), it's a DOES> CFA
121: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
122: * possibly containing a jump to dodoes)
123: * If the word is <CF(DOESJUMP), it's a primitive
124: */
125:
1.10 pazsan 126: void relocate(Cell *image, const char *bitstring, int size, Label symbols[])
1.1 anton 127: {
1.16 pazsan 128: int i=0, j, k, steps=(size/sizeof(Cell))/RELINFOBITS;
1.11 pazsan 129: Cell token;
1.1 anton 130: char bits;
131:
132: /* printf("relocating %x[%x]\n", image, size); */
133:
1.31 ! pazsan 134: for(k=0; k<=steps; k++) {
1.13 pazsan 135: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.1 anton 136: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
1.13 pazsan 137: if(bits & (1U << (RELINFOBITS-1))) {
1.1 anton 138: /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/
1.11 pazsan 139: if((token=image[i])<0)
140: switch(token)
1.1 anton 141: {
142: case CF_NIL : image[i]=0; break;
143: #if !defined(DOUBLY_INDIRECT)
144: case CF(DOCOL) :
145: case CF(DOVAR) :
146: case CF(DOCON) :
147: case CF(DOUSER) :
148: case CF(DODEFER) :
1.11 pazsan 149: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break;
1.1 anton 150: case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break;
151: #endif /* !defined(DOUBLY_INDIRECT) */
152: case CF(DODOES) :
153: MAKE_DOES_CF(image+i,image[i+1]+((Cell)image));
154: break;
155: default :
156: /* printf("Code field generation image[%x]:=CA(%x)\n",
157: i, CF(image[i])); */
1.11 pazsan 158: image[i]=(Cell)CA(CF(token));
1.1 anton 159: }
160: else
161: image[i]+=(Cell)image;
162: }
163: }
1.31 ! pazsan 164: }
1.26 jwilke 165: ((ImageHeader*)(image))->base = (Address) image;
1.1 anton 166: }
167:
168: UCell checksum(Label symbols[])
169: {
170: UCell r=PRIM_VERSION;
171: Cell i;
172:
173: for (i=DOCOL; i<=DOESJUMP; i++) {
174: r ^= (UCell)(symbols[i]);
175: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
176: }
177: #ifdef DIRECT_THREADED
178: /* we have to consider all the primitives */
179: for (; symbols[i]!=(Label)0; i++) {
180: r ^= (UCell)(symbols[i]);
181: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
182: }
183: #else
184: /* in indirect threaded code all primitives are accessed through the
185: symbols table, so we just have to put the base address of symbols
186: in the checksum */
187: r ^= (UCell)symbols;
188: #endif
189: return r;
190: }
191:
1.3 anton 192: Address verbose_malloc(Cell size)
193: {
194: Address r;
195: /* leave a little room (64B) for stack underflows */
196: if ((r = malloc(size+64))==NULL) {
197: perror(progname);
198: exit(1);
199: }
200: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
201: if (debug)
202: fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
203: return r;
204: }
205:
1.1 anton 206: Address my_alloc(Cell size)
207: {
1.5 jwilke 208: #if HAVE_MMAP
1.1 anton 209: static Address next_address=0;
210: Address r;
211:
212: #if defined(MAP_ANON)
213: if (debug)
214: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
215: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
216: #else /* !defined(MAP_ANON) */
1.17 anton 217: /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are
218: apparently defaults) */
1.1 anton 219: #ifndef MAP_FILE
220: # define MAP_FILE 0
221: #endif
222: #ifndef MAP_PRIVATE
223: # define MAP_PRIVATE 0
224: #endif
225: static int dev_zero=-1;
226:
227: if (dev_zero == -1)
228: dev_zero = open("/dev/zero", O_RDONLY);
229: if (dev_zero == -1) {
230: r = (Address)-1;
231: if (debug)
232: fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
233: strerror(errno));
234: } else {
235: if (debug)
236: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
237: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
238: }
239: #endif /* !defined(MAP_ANON) */
240:
241: if (r != (Address)-1) {
242: if (debug)
243: fprintf(stderr, "success, address=$%lx\n", (long) r);
1.24 anton 244: if (pagesize != 1)
1.1 anton 245: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
246: return r;
247: }
248: if (debug)
249: fprintf(stderr, "failed: %s\n", strerror(errno));
250: #endif /* HAVE_MMAP */
1.3 anton 251: /* use malloc as fallback */
252: return verbose_malloc(size);
1.1 anton 253: }
254:
1.3 anton 255: #if (defined(mips) && !defined(INDIRECT_THREADED))
256: /* the 256MB jump restriction on the MIPS architecture makes the
257: combination of direct threading and mmap unsafe. */
258: #define dict_alloc(size) verbose_malloc(size)
259: #else
260: #define dict_alloc(size) my_alloc(size)
261: #endif
262:
1.10 pazsan 263: void set_stack_sizes(ImageHeader * header)
264: {
265: if (dictsize==0)
266: dictsize = header->dict_size;
267: if (dsize==0)
268: dsize = header->data_stack_size;
269: if (rsize==0)
270: rsize = header->return_stack_size;
271: if (fsize==0)
272: fsize = header->fp_stack_size;
273: if (lsize==0)
274: lsize = header->locals_stack_size;
275: dictsize=maxaligned(dictsize);
276: dsize=maxaligned(dsize);
277: rsize=maxaligned(rsize);
278: lsize=maxaligned(lsize);
279: fsize=maxaligned(fsize);
280: }
281:
282: void alloc_stacks(ImageHeader * header)
283: {
284: header->dict_size=dictsize;
285: header->data_stack_size=dsize;
286: header->fp_stack_size=fsize;
287: header->return_stack_size=rsize;
288: header->locals_stack_size=lsize;
289:
290: header->data_stack_base=my_alloc(dsize);
291: header->fp_stack_base=my_alloc(fsize);
292: header->return_stack_base=my_alloc(rsize);
293: header->locals_stack_base=my_alloc(lsize);
294: }
295:
1.11 pazsan 296: int go_forth(Address image, int stack, Cell *entries)
297: {
1.18 anton 298: ImageHeader *image_header = (ImageHeader *)image;
299: Cell *sp0=(Cell*)(image_header->data_stack_base + dsize);
300: Float *fp0=(Float *)(image_header->fp_stack_base + fsize);
301: Cell *rp0=(Cell *)(image_header->return_stack_base + rsize);
302: Address lp0=image_header->locals_stack_base + lsize;
303: Xt *ip0=(Xt *)(image_header->boot_entry);
1.13 pazsan 304: #ifdef SYSSIGNALS
1.11 pazsan 305: int throw_code;
1.13 pazsan 306: #endif
1.11 pazsan 307:
308: /* ensure that the cached elements (if any) are accessible */
1.18 anton 309: IF_TOS(sp0--);
310: IF_FTOS(fp0--);
1.11 pazsan 311:
312: for(;stack>0;stack--)
1.18 anton 313: *--sp0=entries[stack-1];
1.11 pazsan 314:
1.30 pazsan 315: #ifdef SYSSIGNALS
1.11 pazsan 316: get_winsize();
317:
318: install_signal_handlers(); /* right place? */
319:
320: if ((throw_code=setjmp(throw_jmp_buf))) {
321: static Cell signal_data_stack[8];
322: static Cell signal_return_stack[8];
323: static Float signal_fp_stack[1];
1.13 pazsan 324:
1.11 pazsan 325: signal_data_stack[7]=throw_code;
1.18 anton 326:
327: #ifdef GFORTH_DEBUGGING
328: if (rp <= rp0 && rp > (Cell *)(image_header->return_stack_base+5)) {
329: /* no rstack overflow or underflow */
330: rp0 = rp;
1.27 anton 331: *--rp0 = (Cell)ip;
1.18 anton 332: }
333: else /* I love non-syntactic ifdefs :-) */
334: #endif
335: rp0 = signal_return_stack+8;
1.25 anton 336: /* fprintf(stderr, "rp=$%x\n",rp0);*/
1.11 pazsan 337:
1.18 anton 338: return((int)engine(image_header->throw_entry, signal_data_stack+7,
339: rp0, signal_fp_stack, 0));
1.11 pazsan 340: }
1.13 pazsan 341: #endif
1.11 pazsan 342:
1.18 anton 343: return((int)engine(ip0,sp0,rp0,fp0,lp0));
1.11 pazsan 344: }
345:
1.21 anton 346:
1.30 pazsan 347: #ifndef INCLUDE_IMAGE
1.21 anton 348: void print_sizes(Cell sizebyte)
349: /* print size information */
350: {
351: static char* endianstring[]= { " big","little" };
352:
353: fprintf(stderr,"%s endian, cell=%d bytes, char=%d bytes, au=%d bytes\n",
354: endianstring[sizebyte & 1],
355: 1 << ((sizebyte >> 1) & 3),
356: 1 << ((sizebyte >> 3) & 3),
357: 1 << ((sizebyte >> 5) & 3));
358: }
359:
1.1 anton 360: Address loader(FILE *imagefile, char* filename)
361: /* returns the address of the image proper (after the preamble) */
362: {
363: ImageHeader header;
364: Address image;
365: Address imp; /* image+preamble */
1.17 anton 366: Char magic[8];
367: char magic7; /* size byte of magic number */
1.1 anton 368: Cell preamblesize=0;
369: Label *symbols = engine(0,0,0,0,0);
1.6 pazsan 370: Cell data_offset = offset_image ? 56*sizeof(Cell) : 0;
1.1 anton 371: UCell check_sum;
1.15 pazsan 372: Cell ausize = ((RELINFOBITS == 8) ? 0 :
373: (RELINFOBITS == 16) ? 1 :
374: (RELINFOBITS == 32) ? 2 : 3);
375: Cell charsize = ((sizeof(Char) == 1) ? 0 :
376: (sizeof(Char) == 2) ? 1 :
377: (sizeof(Char) == 4) ? 2 : 3) + ausize;
378: Cell cellsize = ((sizeof(Cell) == 1) ? 0 :
379: (sizeof(Cell) == 2) ? 1 :
380: (sizeof(Cell) == 4) ? 2 : 3) + ausize;
1.21 anton 381: Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) +
382: #ifdef WORDS_BIGENDIAN
383: 0
384: #else
385: 1
386: #endif
387: ;
1.1 anton 388:
389: #ifndef DOUBLY_INDIRECT
390: check_sum = checksum(symbols);
391: #else /* defined(DOUBLY_INDIRECT) */
392: check_sum = (UCell)symbols;
393: #endif /* defined(DOUBLY_INDIRECT) */
1.10 pazsan 394:
395: do {
396: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.15 pazsan 397: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.4) image.\n",
1.10 pazsan 398: progname, filename);
399: exit(1);
1.1 anton 400: }
1.10 pazsan 401: preamblesize+=8;
1.15 pazsan 402: } while(memcmp(magic,"Gforth2",7));
1.17 anton 403: magic7 = magic[7];
1.1 anton 404: if (debug) {
1.17 anton 405: magic[7]='\0';
1.21 anton 406: fprintf(stderr,"Magic found: %s ", magic);
407: print_sizes(magic7);
1.1 anton 408: }
409:
1.21 anton 410: if (magic7 != sizebyte)
411: {
412: fprintf(stderr,"This image is: ");
413: print_sizes(magic7);
414: fprintf(stderr,"whereas the machine is ");
415: print_sizes(sizebyte);
1.1 anton 416: exit(-2);
417: };
418:
419: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.10 pazsan 420:
421: set_stack_sizes(&header);
1.1 anton 422:
423: #if HAVE_GETPAGESIZE
424: pagesize=getpagesize(); /* Linux/GNU libc offers this */
425: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
426: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
427: #elif PAGESIZE
428: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
429: #endif
430: if (debug)
1.5 jwilke 431: fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 432:
1.3 anton 433: image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset;
1.1 anton 434: rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */
435: if (clear_dictionary)
1.10 pazsan 436: memset(image, 0, dictsize);
437: fread(image, 1, preamblesize+header.image_size, imagefile);
1.1 anton 438: imp=image+preamblesize;
439: if(header.base==0) {
440: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
441: char reloc_bits[reloc_size];
1.10 pazsan 442: fread(reloc_bits, 1, reloc_size, imagefile);
443: relocate((Cell *)imp, reloc_bits, header.image_size, symbols);
1.1 anton 444: #if 0
445: { /* let's see what the relocator did */
446: FILE *snapshot=fopen("snapshot.fi","wb");
447: fwrite(image,1,imagesize,snapshot);
448: fclose(snapshot);
449: }
450: #endif
451: }
452: else if(header.base!=imp) {
453: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
454: progname, (unsigned long)header.base, (unsigned long)imp);
455: exit(1);
456: }
457: if (header.checksum==0)
458: ((ImageHeader *)imp)->checksum=check_sum;
459: else if (header.checksum != check_sum) {
460: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
461: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
462: exit(1);
463: }
464: fclose(imagefile);
465:
1.10 pazsan 466: alloc_stacks((ImageHeader *)imp);
1.1 anton 467:
468: CACHE_FLUSH(imp, header.image_size);
469:
470: return imp;
471: }
472:
1.28 anton 473: /* index of last '/' or '\' in file, 0 if there is none. !! Hmm, could
474: be implemented with strrchr and the separator should be
475: OS-dependent */
1.1 anton 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;
1.28 anton 490: char * expfilename = tilde_cstr(fullfilename, strlen(fullfilename), 1);
1.10 pazsan 491:
1.28 anton 492: image_file=fopen(expfilename,"rb");
1.1 anton 493: if (image_file!=NULL && debug)
1.28 anton 494: fprintf(stderr, "Opened image file: %s\n", expfilename);
1.10 pazsan 495: return image_file;
1.1 anton 496: }
497:
1.28 anton 498: /* try to open image file concat(path[0:len],imagename) */
1.1 anton 499: FILE *checkimage(char *path, int len, char *imagename)
1.10 pazsan 500: {
501: int dirlen=len;
1.1 anton 502: char fullfilename[dirlen+strlen(imagename)+2];
1.10 pazsan 503:
1.1 anton 504: memcpy(fullfilename, path, dirlen);
505: if (fullfilename[dirlen-1]!='/')
506: fullfilename[dirlen++]='/';
507: strcpy(fullfilename+dirlen,imagename);
1.10 pazsan 508: return openimage(fullfilename);
1.1 anton 509: }
510:
1.10 pazsan 511: FILE * open_image_file(char * imagename, char * path)
1.1 anton 512: {
1.10 pazsan 513: FILE * image_file=NULL;
1.28 anton 514: char *origpath=path;
1.10 pazsan 515:
516: if(strchr(imagename, '/')==NULL) {
517: /* first check the directory where the exe file is in !! 01may97jaw */
518: if (onlypath(progname))
519: image_file=checkimage(progname, onlypath(progname), imagename);
520: if (!image_file)
521: do {
522: char *pend=strchr(path, PATHSEP);
523: if (pend==NULL)
524: pend=path+strlen(path);
525: if (strlen(path)==0) break;
526: image_file=checkimage(path, pend-path, imagename);
527: path=pend+(*pend==PATHSEP);
528: } while (image_file==NULL);
529: } else {
530: image_file=openimage(imagename);
531: }
1.1 anton 532:
1.10 pazsan 533: if (!image_file) {
534: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
1.28 anton 535: progname, imagename, origpath);
1.10 pazsan 536: exit(1);
1.7 anton 537: }
538:
1.10 pazsan 539: return image_file;
540: }
1.11 pazsan 541: #endif
542:
543: #ifdef HAS_OS
544: UCell convsize(char *s, UCell elemsize)
545: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
546: of bytes. the letter at the end indicates the unit, where e stands
547: for the element size. default is e */
548: {
549: char *endp;
550: UCell n,m;
551:
552: m = elemsize;
553: n = strtoul(s,&endp,0);
554: if (endp!=NULL) {
555: if (strcmp(endp,"b")==0)
556: m=1;
557: else if (strcmp(endp,"k")==0)
558: m=1024;
559: else if (strcmp(endp,"M")==0)
560: m=1024*1024;
561: else if (strcmp(endp,"G")==0)
562: m=1024*1024*1024;
563: else if (strcmp(endp,"T")==0) {
564: #if (SIZEOF_CHAR_P > 4)
1.24 anton 565: m=1024L*1024*1024*1024;
1.11 pazsan 566: #else
567: fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp);
568: exit(1);
569: #endif
570: } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
571: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
572: exit(1);
573: }
574: }
575: return n*m;
576: }
1.10 pazsan 577:
578: void gforth_args(int argc, char ** argv, char ** path, char ** imagename)
579: {
580: int c;
581:
1.1 anton 582: opterr=0;
583: while (1) {
584: int option_index=0;
585: static struct option opts[] = {
1.29 anton 586: {"appl-image", required_argument, NULL, 'a'},
1.1 anton 587: {"image-file", required_argument, NULL, 'i'},
588: {"dictionary-size", required_argument, NULL, 'm'},
589: {"data-stack-size", required_argument, NULL, 'd'},
590: {"return-stack-size", required_argument, NULL, 'r'},
591: {"fp-stack-size", required_argument, NULL, 'f'},
592: {"locals-stack-size", required_argument, NULL, 'l'},
593: {"path", required_argument, NULL, 'p'},
594: {"version", no_argument, NULL, 'v'},
595: {"help", no_argument, NULL, 'h'},
596: /* put something != 0 into offset_image */
597: {"offset-image", no_argument, &offset_image, 1},
598: {"no-offset-im", no_argument, &offset_image, 0},
599: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 600: {"die-on-signal", no_argument, &die_on_signal, 1},
1.1 anton 601: {"debug", no_argument, &debug, 1},
602: {0,0,0,0}
603: /* no-init-file, no-rc? */
604: };
605:
606: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index);
607:
608: switch (c) {
1.29 anton 609: case EOF: return;
610: case '?': optind--; return;
611: case 'a': *imagename = optarg; return;
1.10 pazsan 612: case 'i': *imagename = optarg; break;
1.1 anton 613: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
614: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
615: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
616: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
617: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.10 pazsan 618: case 'p': *path = optarg; break;
1.8 anton 619: case 'v': fprintf(stderr, "gforth %s\n", VERSION); exit(0);
1.1 anton 620: case 'h':
1.29 anton 621: fprintf(stderr, "Usage: %s [engine options] ['--'] [image arguments]\n\
1.1 anton 622: Engine Options:\n\
1.29 anton 623: --appl-image FILE equivalent to '--image-file=FILE --'\n\
1.10 pazsan 624: --clear-dictionary Initialize the dictionary with 0 bytes\n\
625: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
626: --debug Print debugging information during startup\n\
627: --die-on-signal exit instead of CATCHing some signals\n\
628: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
629: -h, --help Print this message and exit\n\
630: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
631: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
632: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
633: --no-offset-im Load image at normal position\n\
634: --offset-image Load image at a different position\n\
635: -p PATH, --path=PATH Search path for finding image and sources\n\
636: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
637: -v, --version Print version and exit\n\
1.1 anton 638: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.10 pazsan 639: `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n",
640: argv[0]);
641: optind--;
642: return;
1.1 anton 643: }
644: }
1.10 pazsan 645: }
1.11 pazsan 646: #endif
1.10 pazsan 647:
648: #ifdef INCLUDE_IMAGE
649: extern Cell image[];
650: extern const char reloc_bits[];
651: #endif
652:
653: int main(int argc, char **argv, char **env)
654: {
1.30 pazsan 655: #ifdef HAS_OS
1.10 pazsan 656: char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
1.30 pazsan 657: #else
658: char *path = DEFAULTPATH;
659: #endif
1.13 pazsan 660: #ifndef INCLUDE_IMAGE
1.10 pazsan 661: char *imagename="gforth.fi";
662: FILE *image_file;
663: Address image;
664: #endif
665: int retvalue;
666:
667: #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED)
668: /* turn on alignment checks on the 486.
669: * on the 386 this should have no effect. */
670: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
671: /* this is unusable with Linux' libc.4.6.27, because this library is
672: not alignment-clean; we would have to replace some library
673: functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep
674: the stack FP-aligned. */
675: #endif
676:
677: /* buffering of the user output device */
1.11 pazsan 678: #ifdef _IONBF
1.10 pazsan 679: if (isatty(fileno(stdout))) {
680: fflush(stdout);
681: setvbuf(stdout,NULL,_IONBF,0);
1.1 anton 682: }
1.11 pazsan 683: #endif
1.1 anton 684:
1.10 pazsan 685: progname = argv[0];
686:
1.11 pazsan 687: #ifdef HAS_OS
1.10 pazsan 688: gforth_args(argc, argv, &path, &imagename);
1.11 pazsan 689: #endif
1.10 pazsan 690:
691: #ifdef INCLUDE_IMAGE
692: set_stack_sizes((ImageHeader *)image);
1.22 pazsan 693: if(((ImageHeader *)image)->base != image)
694: relocate(image, reloc_bits, ((ImageHeader *)image)->image_size,
695: (Label*)engine(0, 0, 0, 0, 0));
1.10 pazsan 696: alloc_stacks((ImageHeader *)image);
697: #else
698: image_file = open_image_file(imagename, path);
699: image = loader(image_file, imagename);
700: #endif
1.24 anton 701: gforth_header=(ImageHeader *)image; /* used in SIGSEGV handler */
1.1 anton 702:
703: {
1.10 pazsan 704: char path2[strlen(path)+1];
1.1 anton 705: char *p1, *p2;
706: Cell environ[]= {
707: (Cell)argc-(optind-1),
708: (Cell)(argv+(optind-1)),
1.10 pazsan 709: (Cell)strlen(path),
1.1 anton 710: (Cell)path2};
711: argv[optind-1] = progname;
712: /*
713: for (i=0; i<environ[0]; i++)
714: printf("%s\n", ((char **)(environ[1]))[i]);
715: */
716: /* make path OS-independent by replacing path separators with NUL */
1.10 pazsan 717: for (p1=path, p2=path2; *p1!='\0'; p1++, p2++)
1.1 anton 718: if (*p1==PATHSEP)
719: *p2 = '\0';
720: else
721: *p2 = *p1;
722: *p2='\0';
1.10 pazsan 723: retvalue = go_forth(image, 4, environ);
1.1 anton 724: deprep_terminal();
725: }
1.13 pazsan 726: return retvalue;
1.1 anton 727: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to main.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [gforth] / gforth / engine