Annotation of gforth/main.c, revision 1.55
1.30 anton 1: /* command line interpretation, image loading etc. for Gforth
2:
3:
4: Copyright (C) 1995 Free Software Foundation, Inc.
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.
1.1 anton 21: */
22:
1.32 anton 23: #include "config.h"
1.35 anton 24: #include <errno.h>
1.1 anton 25: #include <ctype.h>
26: #include <stdio.h>
27: #include <string.h>
28: #include <math.h>
29: #include <sys/types.h>
30: #include <sys/stat.h>
31: #include <fcntl.h>
32: #include <assert.h>
33: #include <stdlib.h>
1.49 anton 34: #if HAVE_SYS_MMAN_H
35: #include <sys/mman.h>
36: #endif
1.1 anton 37: #include "forth.h"
1.5 pazsan 38: #include "io.h"
1.20 anton 39: #include "getopt.h"
1.45 anton 40: #include "version.h"
1.2 pazsan 41:
1.52 anton 42: #define PRIM_VERSION 1
43: /* increment this whenever the primitives change in an incompatible way */
44:
1.22 pazsan 45: #ifdef MSDOS
46: jmp_buf throw_jmp_buf;
47: #endif
48:
1.54 anton 49: #if defined(DIRECT_THREADED)
1.16 pazsan 50: # define CA(n) (symbols[(n)])
1.1 anton 51: #else
1.21 pazsan 52: # define CA(n) ((Cell)(symbols+(n)))
1.1 anton 53: #endif
54:
1.23 pazsan 55: #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float))
1.10 anton 56:
1.50 anton 57: static UCell dictsize=0;
58: static UCell dsize=0;
59: static UCell rsize=0;
60: static UCell fsize=0;
61: static UCell lsize=0;
1.54 anton 62: int offset_image=0;
1.49 anton 63: static int clear_dictionary=0;
64: static int debug=0;
65: static size_t pagesize=0;
1.10 anton 66: char *progname;
67:
1.1 anton 68: /* image file format:
1.35 anton 69: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.2.0 -i\n")
70: * padding to a multiple of 8
1.36 anton 71: * magic: "Gforth1x" means format 0.2,
1.35 anton 72: * where x is even for big endian and odd for little endian
73: * and x & ~1 is the size of the cell in bytes.
74: * padding to max alignment (no padding necessary on current machines)
75: * ImageHeader structure (see below)
76: * data (size in ImageHeader.image_size)
77: * tags ((if relocatable, 1 bit/data cell)
1.1 anton 78: *
1.35 anton 79: * tag==1 means that the corresponding word is an address;
1.1 anton 80: * If the word is >=0, the address is within the image;
81: * addresses within the image are given relative to the start of the image.
1.35 anton 82: * If the word =-1 (CF_NIL), the address is NIL,
83: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
84: * If the word =CF(DODOES), it's a DOES> CFA
85: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
86: * possibly containing a jump to dodoes)
87: * If the word is <CF(DOESJUMP), it's a primitive
1.1 anton 88: */
89:
1.35 anton 90: typedef struct {
91: Address base; /* base address of image (0 if relocatable) */
92: UCell checksum; /* checksum of ca's to protect against some
93: incompatible binary/executable combinations
94: (0 if relocatable) */
95: UCell image_size; /* all sizes in bytes */
96: UCell dict_size;
97: UCell data_stack_size;
98: UCell fp_stack_size;
99: UCell return_stack_size;
100: UCell locals_stack_size;
101: Xt *boot_entry; /* initial ip for booting (in BOOT) */
102: Xt *throw_entry; /* ip after signal (in THROW) */
1.49 anton 103: Cell unused1; /* possibly tib stack size */
104: Cell unused2;
105: Address data_stack_base; /* this and the following fields are initialized by the loader */
106: Address fp_stack_base;
107: Address return_stack_base;
108: Address locals_stack_base;
1.35 anton 109: } ImageHeader;
110: /* the image-header is created in main.fs */
111:
1.10 anton 112: void relocate(Cell *image, char *bitstring, int size, Label symbols[])
1.1 anton 113: {
1.16 pazsan 114: int i=0, j, k, steps=(size/sizeof(Cell))/8;
115: char bits;
1.5 pazsan 116: /* static char bits[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};*/
1.37 pazsan 117:
118: /* printf("relocating %x[%x]\n", image, size); */
1.5 pazsan 119:
1.16 pazsan 120: for(k=0; k<=steps; k++)
1.55 ! anton 121: for(j=0, bits=bitstring[k]; j<8; j++, i++, bits<<=1) {
! 122: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
! 123: if(bits & 0x80) {
! 124: /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/
1.16 pazsan 125: if(image[i]<0)
126: switch(image[i])
127: {
128: case CF_NIL : image[i]=0; break;
1.54 anton 129: #if !defined(DOUBLY_INDIRECT)
1.16 pazsan 130: case CF(DOCOL) :
131: case CF(DOVAR) :
132: case CF(DOCON) :
133: case CF(DOUSER) :
1.24 pazsan 134: case CF(DODEFER) :
1.28 anton 135: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(image[i])]); break;
1.54 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));
1.16 pazsan 140: break;
1.37 pazsan 141: default :
142: /* printf("Code field generation image[%x]:=CA(%x)\n",
1.54 anton 143: i, CF(image[i])); */
144: image[i]=(Cell)CA(CF(image[i]));
1.16 pazsan 145: }
146: else
147: image[i]+=(Cell)image;
1.55 ! anton 148: }
! 149: }
1.1 anton 150: }
151:
1.35 anton 152: UCell checksum(Label symbols[])
153: {
1.52 anton 154: UCell r=PRIM_VERSION;
1.35 anton 155: Cell i;
156:
157: for (i=DOCOL; i<=DOESJUMP; i++) {
158: r ^= (UCell)(symbols[i]);
159: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
160: }
161: #ifdef DIRECT_THREADED
162: /* we have to consider all the primitives */
163: for (; symbols[i]!=(Label)0; i++) {
164: r ^= (UCell)(symbols[i]);
165: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
166: }
167: #else
168: /* in indirect threaded code all primitives are accessed through the
169: symbols table, so we just have to put the base address of symbols
170: in the checksum */
171: r ^= (UCell)symbols;
172: #endif
173: return r;
174: }
175:
1.49 anton 176: Address my_alloc(Cell size)
177: {
178: static Address next_address=0;
179: Address r;
180:
1.54 anton 181: #if HAVE_MMAP
182: #if defined(MAP_ANON)
1.49 anton 183: if (debug)
1.54 anton 184: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
1.49 anton 185: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
1.54 anton 186: #else /* !defined(MAP_ANON) */
1.55 ! anton 187: /* Ultrix (at least does not define MAP_FILE and MAP_PRIVATE (both are
! 188: apparently defaults*/
! 189: #ifndef MAP_FILE
! 190: # define MAP_FILE 0
! 191: #endif
! 192: #ifndef MAP_PRIVATE
! 193: # define MAP_PRIVATE 0
! 194: #endif
1.54 anton 195: static int dev_zero=-1;
196:
197: if (dev_zero == -1)
198: dev_zero = open("/dev/zero", O_RDONLY);
199: if (dev_zero == -1) {
200: r = (Address)-1;
201: if (debug)
202: fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
203: strerror(errno));
204: } else {
205: if (debug)
206: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
207: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
208: }
209: #endif /* !defined(MAP_ANON) */
210:
1.49 anton 211: if (r != (Address)-1) {
212: if (debug)
213: fprintf(stderr, "success, address=$%lx\n", (long) r);
214: if (pagesize != 0)
215: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
216: return r;
217: }
218: if (debug)
219: fprintf(stderr, "failed: %s\n", strerror(errno));
1.54 anton 220: #endif /* HAVE_MMAP */
1.49 anton 221: /* use malloc as fallback, leave a little room (64B) for stack underflows */
222: if ((r = malloc(size+64))==NULL) {
223: perror(progname);
224: exit(1);
225: }
1.53 pazsan 226: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
1.49 anton 227: if (debug)
228: fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
229: return r;
230: }
231:
1.39 pazsan 232: Address loader(FILE *imagefile, char* filename)
1.35 anton 233: /* returns the address of the image proper (after the preamble) */
1.10 anton 234: {
1.35 anton 235: ImageHeader header;
236: Address image;
237: Address imp; /* image+preamble */
1.53 pazsan 238: Char magic[9];
1.35 anton 239: Cell preamblesize=0;
1.54 anton 240: Label *symbols = engine(0,0,0,0,0);
241: Cell data_offset = offset_image ? 28*sizeof(Cell) : 0;
242: UCell check_sum;
243: static char* endianstring[]= { "big","little" };
1.18 pazsan 244:
1.54 anton 245: #ifndef DOUBLY_INDIRECT
246: check_sum = checksum(symbols);
247: #else /* defined(DOUBLY_INDIRECT) */
248: check_sum = (UCell)symbols;
249: #endif /* defined(DOUBLY_INDIRECT) */
1.25 pazsan 250:
1.18 pazsan 251: do
252: {
253: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.39 pazsan 254: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.2) image.\n",
255: progname, filename);
1.18 pazsan 256: exit(1);
257: }
1.35 anton 258: preamblesize+=8;
1.18 pazsan 259: }
1.35 anton 260: while(memcmp(magic,"Gforth1",7));
1.53 pazsan 261: if (debug) {
262: magic[8]='\0';
263: fprintf(stderr,"Magic found: %s\n", magic);
264: }
265:
1.35 anton 266: if(magic[7] != sizeof(Cell) +
1.25 pazsan 267: #ifdef WORDS_BIGENDIAN
268: '0'
269: #else
270: '1'
271: #endif
1.35 anton 272: )
273: { fprintf(stderr,"This image is %d bit %s-endian, whereas the machine is %d bit %s-endian.\n",
274: ((magic[7]-'0')&~1)*8, endianstring[magic[7]&1],
275: sizeof(Cell)*8, endianstring[
1.25 pazsan 276: #ifdef WORDS_BIGENDIAN
277: 0
278: #else
279: 1
280: #endif
281: ]);
282: exit(-2);
283: };
1.18 pazsan 284:
1.35 anton 285: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.16 pazsan 286: if (dictsize==0)
1.35 anton 287: dictsize = header.dict_size;
1.16 pazsan 288: if (dsize==0)
1.35 anton 289: dsize=header.data_stack_size;
1.16 pazsan 290: if (rsize==0)
1.35 anton 291: rsize=header.return_stack_size;
1.16 pazsan 292: if (fsize==0)
1.35 anton 293: fsize=header.fp_stack_size;
1.16 pazsan 294: if (lsize==0)
1.35 anton 295: lsize=header.locals_stack_size;
1.16 pazsan 296: dictsize=maxaligned(dictsize);
297: dsize=maxaligned(dsize);
298: rsize=maxaligned(rsize);
299: lsize=maxaligned(lsize);
300: fsize=maxaligned(fsize);
301:
1.49 anton 302: #if HAVE_GETPAGESIZE
303: pagesize=getpagesize(); /* Linux/GNU libc offers this */
304: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
305: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
306: #elif PAGESIZE
1.54 anton 307: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
1.49 anton 308: #endif
309: if (debug)
310: fprintf(stderr,"pagesize=%d\n",pagesize);
311:
1.54 anton 312: image = my_alloc(preamblesize+dictsize+data_offset)+data_offset;
1.35 anton 313: rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */
1.49 anton 314: if (clear_dictionary)
315: memset(image,0,dictsize);
316: fread(image,1,preamblesize+header.image_size,imagefile);
1.35 anton 317: imp=image+preamblesize;
318: if(header.base==0) {
1.49 anton 319: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
320: char reloc_bits[reloc_size];
321: fread(reloc_bits,1,reloc_size,imagefile);
322: relocate((Cell *)imp,reloc_bits,header.image_size,symbols);
1.48 anton 323: #if 0
324: { /* let's see what the relocator did */
325: FILE *snapshot=fopen("snapshot.fi","wb");
326: fwrite(image,1,imagesize,snapshot);
327: fclose(snapshot);
328: }
329: #endif
1.16 pazsan 330: }
1.35 anton 331: else if(header.base!=imp) {
1.51 anton 332: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
1.35 anton 333: progname, (unsigned long)header.base, (unsigned long)imp);
334: exit(1);
1.48 anton 335: }
336: if (header.checksum==0)
337: ((ImageHeader *)imp)->checksum=check_sum;
338: else if (header.checksum != check_sum) {
1.36 anton 339: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\nThe Gforth installer should look into the INSTALL file\n",
1.35 anton 340: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
1.16 pazsan 341: exit(1);
342: }
1.49 anton 343: fclose(imagefile);
1.1 anton 344:
1.35 anton 345: ((ImageHeader *)imp)->dict_size=dictsize;
346: ((ImageHeader *)imp)->data_stack_size=dsize;
1.49 anton 347: ((ImageHeader *)imp)->fp_stack_size=fsize;
1.35 anton 348: ((ImageHeader *)imp)->return_stack_size=rsize;
349: ((ImageHeader *)imp)->locals_stack_size=lsize;
350:
1.49 anton 351: ((ImageHeader *)imp)->data_stack_base=my_alloc(dsize);
352: ((ImageHeader *)imp)->fp_stack_base=my_alloc(fsize);
353: ((ImageHeader *)imp)->return_stack_base=my_alloc(rsize);
354: ((ImageHeader *)imp)->locals_stack_base=my_alloc(lsize);
355:
1.38 anton 356: CACHE_FLUSH(imp, header.image_size);
1.35 anton 357:
358: return imp;
1.1 anton 359: }
360:
1.35 anton 361: int go_forth(Address image, int stack, Cell *entries)
1.1 anton 362: {
1.49 anton 363: Cell *sp=(Cell*)(((ImageHeader *)image)->data_stack_base + dsize);
364: Float *fp=(Float *)(((ImageHeader *)image)->fp_stack_base + fsize);
365: Cell *rp=(Cell *)(((ImageHeader *)image)->return_stack_base + rsize);
366: Address lp=((ImageHeader *)image)->locals_stack_base + lsize;
1.35 anton 367: Xt *ip=(Xt *)(((ImageHeader *)image)->boot_entry);
1.15 anton 368: int throw_code;
1.49 anton 369:
370: /* ensure that the cached elements (if any) are accessible */
371: IF_TOS(sp--);
372: IF_FTOS(fp--);
1.15 anton 373:
374: for(;stack>0;stack--)
375: *--sp=entries[stack-1];
1.39 pazsan 376:
1.44 pazsan 377: #if !defined(MSDOS) && !defined(_WIN32) && !defined(__EMX__)
1.33 anton 378: get_winsize();
1.39 pazsan 379: #endif
380:
1.15 anton 381: install_signal_handlers(); /* right place? */
382:
383: if ((throw_code=setjmp(throw_jmp_buf))) {
384: static Cell signal_data_stack[8];
385: static Cell signal_return_stack[8];
386: static Float signal_fp_stack[1];
387:
388: signal_data_stack[7]=throw_code;
389:
1.35 anton 390: return((int)engine(((ImageHeader *)image)->throw_entry,signal_data_stack+7,
1.15 anton 391: signal_return_stack+8,signal_fp_stack,0));
392: }
1.35 anton 393:
1.15 anton 394: return((int)engine(ip,sp,rp,fp,lp));
1.1 anton 395: }
396:
1.50 anton 397: UCell convsize(char *s, UCell elemsize)
1.54 anton 398: /* converts s of the format [0-9]+[bekM]? (e.g. 25k) into the number
399: of bytes. the letter at the end indicates the unit, where e stands
400: for the element size. default is e */
1.10 anton 401: {
402: char *endp;
1.50 anton 403: UCell n,m;
1.10 anton 404:
405: m = elemsize;
406: n = strtoul(s,&endp,0);
407: if (endp!=NULL) {
408: if (strcmp(endp,"b")==0)
409: m=1;
410: else if (strcmp(endp,"k")==0)
411: m=1024;
412: else if (strcmp(endp,"M")==0)
413: m=1024*1024;
1.31 anton 414: else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
415: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
1.10 anton 416: exit(1);
417: }
418: }
419: return n*m;
420: }
421:
1.1 anton 422: int main(int argc, char **argv, char **env)
423: {
1.43 anton 424: char *path, *path1;
1.16 pazsan 425: char *imagename="gforth.fi";
426: FILE *image_file;
427: int c, retvalue;
1.10 anton 428:
1.14 anton 429: #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED)
1.30 anton 430: /* turn on alignment checks on the 486.
431: * on the 386 this should have no effect. */
432: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
433: /* this is unusable with Linux' libc.4.6.27, because this library is
434: not alignment-clean; we would have to replace some library
435: functions (e.g., memcpy) to make it work */
1.6 anton 436: #endif
1.2 pazsan 437:
1.16 pazsan 438: progname = argv[0];
1.44 pazsan 439: if ((path1=getenv("GFORTHPATH"))==NULL)
440: path1 = DEFAULTPATH;
441:
1.16 pazsan 442: opterr=0;
443: while (1) {
444: int option_index=0;
445: static struct option opts[] = {
446: {"image-file", required_argument, NULL, 'i'},
447: {"dictionary-size", required_argument, NULL, 'm'},
448: {"data-stack-size", required_argument, NULL, 'd'},
449: {"return-stack-size", required_argument, NULL, 'r'},
450: {"fp-stack-size", required_argument, NULL, 'f'},
451: {"locals-stack-size", required_argument, NULL, 'l'},
452: {"path", required_argument, NULL, 'p'},
1.45 anton 453: {"version", no_argument, NULL, 'v'},
454: {"help", no_argument, NULL, 'h'},
1.54 anton 455: /* put something != 0 into offset_image */
456: {"offset-image", no_argument, &offset_image, 1},
1.55 ! anton 457: {"no-offset-im", no_argument, &offset_image, 0},
1.54 anton 458: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.49 anton 459: {"debug", no_argument, &debug, 1},
1.16 pazsan 460: {0,0,0,0}
461: /* no-init-file, no-rc? */
462: };
1.44 pazsan 463:
1.54 anton 464: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index);
1.44 pazsan 465:
1.16 pazsan 466: if (c==EOF)
467: break;
468: if (c=='?') {
469: optind--;
470: break;
471: }
472: switch (c) {
473: case 'i': imagename = optarg; break;
474: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
475: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
476: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
477: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
478: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.44 pazsan 479: case 'p': path1 = optarg; break;
1.45 anton 480: case 'v': fprintf(stderr, "gforth %s\n", gforth_version); exit(0);
481: case 'h':
482: fprintf(stderr, "Usage: %s [engine options] [image arguments]\n\
483: Engine Options:\n\
1.53 pazsan 484: -c, --clear-dictionary Initialize the dictionary with 0 bytes\n\
1.45 anton 485: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
1.49 anton 486: --debug Print debugging information during startup\n\
1.45 anton 487: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
488: -h, --help Print this message and exit\n\
489: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
490: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
491: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
1.49 anton 492: --offset-image Load image at a different position\n\
1.45 anton 493: -p PATH, --path=PATH Search path for finding image and sources\n\
494: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
495: -v, --version Print version and exit\n\
1.54 anton 496: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.45 anton 497: `b' (bytes), `e' (elements), `k' (kilobytes), or `M' (Megabytes).\n\
498: \n\
499: Arguments of default image `gforth.fi':\n\
500: FILE load FILE (with `require')\n\
501: -e STRING, --evaluate STRING interpret STRING (with `EVALUATE')\n",
502: argv[0]); exit(0);
1.16 pazsan 503: }
504: }
1.44 pazsan 505: path=path1;
506:
1.29 pazsan 507: if(strchr(imagename, '/')==NULL)
508: {
509: do {
1.43 anton 510: char *pend=strchr(path, PATHSEP);
1.29 pazsan 511: if (pend==NULL)
512: pend=path+strlen(path);
513: if (strlen(path)==0) {
514: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
1.47 anton 515: progname, imagename, path1);
1.29 pazsan 516: exit(1);
517: }
518: {
519: int dirlen=pend-path;
520: char fullfilename[dirlen+strlen(imagename)+2];
521: memcpy(fullfilename, path, dirlen);
522: if (fullfilename[dirlen-1]!='/')
523: fullfilename[dirlen++]='/';
524: strcpy(fullfilename+dirlen,imagename);
525: image_file=fopen(fullfilename,"rb");
1.54 anton 526: if (image_file!=NULL && debug)
527: fprintf(stderr, "Opened image file: %s\n", fullfilename);
1.29 pazsan 528: }
1.43 anton 529: path=pend+(*pend==PATHSEP);
1.29 pazsan 530: } while (image_file==NULL);
1.16 pazsan 531: }
1.29 pazsan 532: else
1.16 pazsan 533: {
1.29 pazsan 534: image_file=fopen(imagename,"rb");
1.16 pazsan 535: }
1.29 pazsan 536:
1.16 pazsan 537: {
1.45 anton 538: char path2[strlen(path1)+1];
1.43 anton 539: char *p1, *p2;
1.16 pazsan 540: Cell environ[]= {
541: (Cell)argc-(optind-1),
542: (Cell)(argv+(optind-1)),
1.42 anton 543: (Cell)strlen(path1),
1.43 anton 544: (Cell)path2};
1.16 pazsan 545: argv[optind-1] = progname;
546: /*
547: for (i=0; i<environ[0]; i++)
548: printf("%s\n", ((char **)(environ[1]))[i]);
549: */
1.42 anton 550: /* make path OS-independent by replacing path separators with NUL */
1.43 anton 551: for (p1=path1, p2=path2; *p1!='\0'; p1++, p2++)
552: if (*p1==PATHSEP)
553: *p2 = '\0';
554: else
555: *p2 = *p1;
556: *p2='\0';
1.42 anton 557: retvalue=go_forth(loader(image_file, imagename),4,environ);
1.16 pazsan 558: deprep_terminal();
559: exit(retvalue);
560: }
1.1 anton 561: }
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