Annotation of gforth/engine/main.c, revision 1.5
1.1 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.
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>
35: #if HAVE_SYS_MMAN_H
36: #include <sys/mman.h>
37: #endif
38: #include "forth.h"
39: #include "io.h"
40: #include "getopt.h"
41: #include "version.h"
42:
43: #define PRIM_VERSION 1
44: /* increment this whenever the primitives change in an incompatible way */
45:
46: #ifdef MSDOS
47: jmp_buf throw_jmp_buf;
48: # ifndef DEFAULTPATH
49: # define DEFAULTPATH "."
50: # endif
51: #endif
52:
53: #if defined(DIRECT_THREADED)
54: # define CA(n) (symbols[(n)])
55: #else
56: # define CA(n) ((Cell)(symbols+(n)))
57: #endif
58:
59: #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float))
60:
61: static UCell dictsize=0;
62: static UCell dsize=0;
63: static UCell rsize=0;
64: static UCell fsize=0;
65: static UCell lsize=0;
66: int offset_image=0;
1.4 anton 67: int die_on_signal=0;
1.1 anton 68: static int clear_dictionary=0;
69: static int debug=0;
70: static size_t pagesize=0;
71: char *progname;
72:
73: /* image file format:
74: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.3.0 -i\n")
75: * padding to a multiple of 8
76: * magic: "Gforth1x" means format 0.2,
77: * where x is even for big endian and odd for little endian
78: * and x & ~1 is the size of the cell in bytes.
79: * padding to max alignment (no padding necessary on current machines)
80: * ImageHeader structure (see below)
81: * data (size in ImageHeader.image_size)
82: * tags ((if relocatable, 1 bit/data cell)
83: *
84: * tag==1 means that the corresponding word is an address;
85: * If the word is >=0, the address is within the image;
86: * addresses within the image are given relative to the start of the image.
87: * If the word =-1 (CF_NIL), the address is NIL,
88: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
89: * If the word =CF(DODOES), it's a DOES> CFA
90: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
91: * possibly containing a jump to dodoes)
92: * If the word is <CF(DOESJUMP), it's a primitive
93: */
94:
95: typedef struct {
96: Address base; /* base address of image (0 if relocatable) */
97: UCell checksum; /* checksum of ca's to protect against some
98: incompatible binary/executable combinations
99: (0 if relocatable) */
100: UCell image_size; /* all sizes in bytes */
101: UCell dict_size;
102: UCell data_stack_size;
103: UCell fp_stack_size;
104: UCell return_stack_size;
105: UCell locals_stack_size;
106: Xt *boot_entry; /* initial ip for booting (in BOOT) */
107: Xt *throw_entry; /* ip after signal (in THROW) */
108: Cell unused1; /* possibly tib stack size */
109: Cell unused2;
110: Address data_stack_base; /* this and the following fields are initialized by the loader */
111: Address fp_stack_base;
112: Address return_stack_base;
113: Address locals_stack_base;
114: } ImageHeader;
115: /* the image-header is created in main.fs */
116:
117: void relocate(Cell *image, char *bitstring, int size, Label symbols[])
118: {
119: int i=0, j, k, steps=(size/sizeof(Cell))/8;
120: char bits;
121: /* static char bits[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};*/
122:
123: /* printf("relocating %x[%x]\n", image, size); */
124:
125: for(k=0; k<=steps; k++)
126: for(j=0, bits=bitstring[k]; j<8; j++, i++, bits<<=1) {
127: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
128: if(bits & 0x80) {
129: /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/
130: if(image[i]<0)
131: switch(image[i])
132: {
133: case CF_NIL : image[i]=0; break;
134: #if !defined(DOUBLY_INDIRECT)
135: case CF(DOCOL) :
136: case CF(DOVAR) :
137: case CF(DOCON) :
138: case CF(DOUSER) :
139: case CF(DODEFER) :
140: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(image[i])]); break;
141: case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break;
142: #endif /* !defined(DOUBLY_INDIRECT) */
143: case CF(DODOES) :
144: MAKE_DOES_CF(image+i,image[i+1]+((Cell)image));
145: break;
146: default :
147: /* printf("Code field generation image[%x]:=CA(%x)\n",
148: i, CF(image[i])); */
149: image[i]=(Cell)CA(CF(image[i]));
150: }
151: else
152: image[i]+=(Cell)image;
153: }
154: }
155: }
156:
157: UCell checksum(Label symbols[])
158: {
159: UCell r=PRIM_VERSION;
160: Cell i;
161:
162: for (i=DOCOL; i<=DOESJUMP; i++) {
163: r ^= (UCell)(symbols[i]);
164: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
165: }
166: #ifdef DIRECT_THREADED
167: /* we have to consider all the primitives */
168: for (; symbols[i]!=(Label)0; i++) {
169: r ^= (UCell)(symbols[i]);
170: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
171: }
172: #else
173: /* in indirect threaded code all primitives are accessed through the
174: symbols table, so we just have to put the base address of symbols
175: in the checksum */
176: r ^= (UCell)symbols;
177: #endif
178: return r;
179: }
180:
1.3 anton 181: Address verbose_malloc(Cell size)
182: {
183: Address r;
184: /* leave a little room (64B) for stack underflows */
185: if ((r = malloc(size+64))==NULL) {
186: perror(progname);
187: exit(1);
188: }
189: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
190: if (debug)
191: fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
192: return r;
193: }
194:
1.1 anton 195: Address my_alloc(Cell size)
196: {
1.5 ! jwilke 197: #if HAVE_MMAP
1.1 anton 198: static Address next_address=0;
199: Address r;
200:
201: #if defined(MAP_ANON)
202: if (debug)
203: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
204: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
205: #else /* !defined(MAP_ANON) */
206: /* Ultrix (at least does not define MAP_FILE and MAP_PRIVATE (both are
207: apparently defaults*/
208: #ifndef MAP_FILE
209: # define MAP_FILE 0
210: #endif
211: #ifndef MAP_PRIVATE
212: # define MAP_PRIVATE 0
213: #endif
214: static int dev_zero=-1;
215:
216: if (dev_zero == -1)
217: dev_zero = open("/dev/zero", O_RDONLY);
218: if (dev_zero == -1) {
219: r = (Address)-1;
220: if (debug)
221: fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
222: strerror(errno));
223: } else {
224: if (debug)
225: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
226: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
227: }
228: #endif /* !defined(MAP_ANON) */
229:
230: if (r != (Address)-1) {
231: if (debug)
232: fprintf(stderr, "success, address=$%lx\n", (long) r);
233: if (pagesize != 0)
234: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
235: return r;
236: }
237: if (debug)
238: fprintf(stderr, "failed: %s\n", strerror(errno));
239: #endif /* HAVE_MMAP */
1.3 anton 240: /* use malloc as fallback */
241: return verbose_malloc(size);
1.1 anton 242: }
243:
1.3 anton 244: #if (defined(mips) && !defined(INDIRECT_THREADED))
245: /* the 256MB jump restriction on the MIPS architecture makes the
246: combination of direct threading and mmap unsafe. */
247: #define dict_alloc(size) verbose_malloc(size)
248: #else
249: #define dict_alloc(size) my_alloc(size)
250: #endif
251:
1.1 anton 252: Address loader(FILE *imagefile, char* filename)
253: /* returns the address of the image proper (after the preamble) */
254: {
255: ImageHeader header;
256: Address image;
257: Address imp; /* image+preamble */
258: Char magic[9];
259: Cell preamblesize=0;
260: Label *symbols = engine(0,0,0,0,0);
261: Cell data_offset = offset_image ? 28*sizeof(Cell) : 0;
262: UCell check_sum;
263: static char* endianstring[]= { "big","little" };
264:
265: #ifndef DOUBLY_INDIRECT
266: check_sum = checksum(symbols);
267: #else /* defined(DOUBLY_INDIRECT) */
268: check_sum = (UCell)symbols;
269: #endif /* defined(DOUBLY_INDIRECT) */
270:
271: do
272: {
273: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
274: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.2) image.\n",
275: progname, filename);
276: exit(1);
277: }
278: preamblesize+=8;
279: }
280: while(memcmp(magic,"Gforth1",7));
281: if (debug) {
282: magic[8]='\0';
283: fprintf(stderr,"Magic found: %s\n", magic);
284: }
285:
286: if(magic[7] != sizeof(Cell) +
287: #ifdef WORDS_BIGENDIAN
288: '0'
289: #else
290: '1'
291: #endif
292: )
293: { fprintf(stderr,"This image is %d bit %s-endian, whereas the machine is %d bit %s-endian.\n",
294: ((magic[7]-'0')&~1)*8, endianstring[magic[7]&1],
1.5 ! jwilke 295: (int) sizeof(Cell)*8, endianstring[
1.1 anton 296: #ifdef WORDS_BIGENDIAN
297: 0
298: #else
299: 1
300: #endif
301: ]);
302: exit(-2);
303: };
304:
305: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
306: if (dictsize==0)
307: dictsize = header.dict_size;
308: if (dsize==0)
309: dsize=header.data_stack_size;
310: if (rsize==0)
311: rsize=header.return_stack_size;
312: if (fsize==0)
313: fsize=header.fp_stack_size;
314: if (lsize==0)
315: lsize=header.locals_stack_size;
316: dictsize=maxaligned(dictsize);
317: dsize=maxaligned(dsize);
318: rsize=maxaligned(rsize);
319: lsize=maxaligned(lsize);
320: fsize=maxaligned(fsize);
321:
322: #if HAVE_GETPAGESIZE
323: pagesize=getpagesize(); /* Linux/GNU libc offers this */
324: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
325: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
326: #elif PAGESIZE
327: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
328: #endif
329: if (debug)
1.5 ! jwilke 330: fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 331:
1.3 anton 332: image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset;
1.1 anton 333: rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */
334: if (clear_dictionary)
335: memset(image,0,dictsize);
336: fread(image,1,preamblesize+header.image_size,imagefile);
337: imp=image+preamblesize;
338: if(header.base==0) {
339: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
340: char reloc_bits[reloc_size];
341: fread(reloc_bits,1,reloc_size,imagefile);
342: relocate((Cell *)imp,reloc_bits,header.image_size,symbols);
343: #if 0
344: { /* let's see what the relocator did */
345: FILE *snapshot=fopen("snapshot.fi","wb");
346: fwrite(image,1,imagesize,snapshot);
347: fclose(snapshot);
348: }
349: #endif
350: }
351: else if(header.base!=imp) {
352: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
353: progname, (unsigned long)header.base, (unsigned long)imp);
354: exit(1);
355: }
356: if (header.checksum==0)
357: ((ImageHeader *)imp)->checksum=check_sum;
358: else if (header.checksum != check_sum) {
359: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
360: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
361: exit(1);
362: }
363: fclose(imagefile);
364:
365: ((ImageHeader *)imp)->dict_size=dictsize;
366: ((ImageHeader *)imp)->data_stack_size=dsize;
367: ((ImageHeader *)imp)->fp_stack_size=fsize;
368: ((ImageHeader *)imp)->return_stack_size=rsize;
369: ((ImageHeader *)imp)->locals_stack_size=lsize;
370:
371: ((ImageHeader *)imp)->data_stack_base=my_alloc(dsize);
372: ((ImageHeader *)imp)->fp_stack_base=my_alloc(fsize);
373: ((ImageHeader *)imp)->return_stack_base=my_alloc(rsize);
374: ((ImageHeader *)imp)->locals_stack_base=my_alloc(lsize);
375:
376: CACHE_FLUSH(imp, header.image_size);
377:
378: return imp;
379: }
380:
381: int go_forth(Address image, int stack, Cell *entries)
382: {
383: Cell *sp=(Cell*)(((ImageHeader *)image)->data_stack_base + dsize);
384: Float *fp=(Float *)(((ImageHeader *)image)->fp_stack_base + fsize);
385: Cell *rp=(Cell *)(((ImageHeader *)image)->return_stack_base + rsize);
386: Address lp=((ImageHeader *)image)->locals_stack_base + lsize;
387: Xt *ip=(Xt *)(((ImageHeader *)image)->boot_entry);
388: int throw_code;
389:
390: /* ensure that the cached elements (if any) are accessible */
391: IF_TOS(sp--);
392: IF_FTOS(fp--);
393:
394: for(;stack>0;stack--)
395: *--sp=entries[stack-1];
396:
397: #if !defined(MSDOS) && !defined(_WIN32) && !defined(__EMX__)
398: get_winsize();
399: #endif
400:
401: install_signal_handlers(); /* right place? */
402:
403: if ((throw_code=setjmp(throw_jmp_buf))) {
404: static Cell signal_data_stack[8];
405: static Cell signal_return_stack[8];
406: static Float signal_fp_stack[1];
407:
408: signal_data_stack[7]=throw_code;
409:
410: return((int)engine(((ImageHeader *)image)->throw_entry,signal_data_stack+7,
411: signal_return_stack+8,signal_fp_stack,0));
412: }
413:
414: return((int)engine(ip,sp,rp,fp,lp));
415: }
416:
417: UCell convsize(char *s, UCell elemsize)
1.2 pazsan 418: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
1.1 anton 419: of bytes. the letter at the end indicates the unit, where e stands
420: for the element size. default is e */
421: {
422: char *endp;
423: UCell n,m;
424:
425: m = elemsize;
426: n = strtoul(s,&endp,0);
427: if (endp!=NULL) {
428: if (strcmp(endp,"b")==0)
429: m=1;
430: else if (strcmp(endp,"k")==0)
431: m=1024;
432: else if (strcmp(endp,"M")==0)
433: m=1024*1024;
1.2 pazsan 434: else if (strcmp(endp,"G")==0)
435: m=1024*1024*1024;
436: #if (SIZEOF_CHAR_P > 4)
437: else if (strcmp(endp,"T")==0)
438: m=1024*1024*1024*1024;
439: #endif
1.1 anton 440: else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
441: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
442: exit(1);
443: }
444: }
445: return n*m;
446: }
447:
448: int onlypath(char *file)
449: { int i;
450: i=strlen(file);
451: while (i) { if (file[i]=='\\' || file[i]=='/') break;
452: i--; }
453: return (i);
454: }
455:
456: FILE *openimage(char *fullfilename)
457: { FILE *image_file;
458: image_file=fopen(fullfilename,"rb");
459: if (image_file!=NULL && debug)
460: fprintf(stderr, "Opened image file: %s\n", fullfilename);
461: return (image_file);
462: }
463:
464: FILE *checkimage(char *path, int len, char *imagename)
465: { int dirlen=len;
466: char fullfilename[dirlen+strlen(imagename)+2];
467: memcpy(fullfilename, path, dirlen);
468: if (fullfilename[dirlen-1]!='/')
469: fullfilename[dirlen++]='/';
470: strcpy(fullfilename+dirlen,imagename);
471: return (openimage(fullfilename));
472: }
473:
474: int main(int argc, char **argv, char **env)
475: {
476: char *path, *path1;
477: char *imagename="gforth.fi";
478: FILE *image_file;
479: int c, retvalue;
480:
481: #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED)
482: /* turn on alignment checks on the 486.
483: * on the 386 this should have no effect. */
484: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
485: /* this is unusable with Linux' libc.4.6.27, because this library is
486: not alignment-clean; we would have to replace some library
487: functions (e.g., memcpy) to make it work */
488: #endif
489:
490: progname = argv[0];
491: if ((path1=getenv("GFORTHPATH"))==NULL)
492: path1 = DEFAULTPATH;
493:
494: opterr=0;
495: while (1) {
496: int option_index=0;
497: static struct option opts[] = {
498: {"image-file", required_argument, NULL, 'i'},
499: {"dictionary-size", required_argument, NULL, 'm'},
500: {"data-stack-size", required_argument, NULL, 'd'},
501: {"return-stack-size", required_argument, NULL, 'r'},
502: {"fp-stack-size", required_argument, NULL, 'f'},
503: {"locals-stack-size", required_argument, NULL, 'l'},
504: {"path", required_argument, NULL, 'p'},
505: {"version", no_argument, NULL, 'v'},
506: {"help", no_argument, NULL, 'h'},
507: /* put something != 0 into offset_image */
508: {"offset-image", no_argument, &offset_image, 1},
509: {"no-offset-im", no_argument, &offset_image, 0},
510: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 511: {"die-on-signal", no_argument, &die_on_signal, 1},
1.1 anton 512: {"debug", no_argument, &debug, 1},
513: {0,0,0,0}
514: /* no-init-file, no-rc? */
515: };
516:
517: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index);
518:
519: if (c==EOF)
520: break;
521: if (c=='?') {
522: optind--;
523: break;
524: }
525: switch (c) {
526: case 'i': imagename = optarg; break;
527: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
528: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
529: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
530: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
531: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
532: case 'p': path1 = optarg; break;
533: case 'v': fprintf(stderr, "gforth %s\n", gforth_version); exit(0);
534: case 'h':
535: fprintf(stderr, "Usage: %s [engine options] [image arguments]\n\
536: Engine Options:\n\
537: -c, --clear-dictionary Initialize the dictionary with 0 bytes\n\
538: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
539: --debug Print debugging information during startup\n\
1.4 anton 540: --die-on-signal exit instead of CATCHing some signals\n\
1.1 anton 541: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
542: -h, --help Print this message and exit\n\
543: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
544: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
545: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
1.4 anton 546: --no-offset-im Load image at normal position\n\
1.1 anton 547: --offset-image Load image at a different position\n\
548: -p PATH, --path=PATH Search path for finding image and sources\n\
549: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
550: -v, --version Print version and exit\n\
551: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
552: `b' (bytes), `e' (elements), `k' (kilobytes), or `M' (Megabytes).\n\
553: \n\
554: Arguments of default image `gforth.fi':\n\
555: FILE load FILE (with `require')\n\
556: -e STRING, --evaluate STRING interpret STRING (with `EVALUATE')\n",
557: argv[0]); exit(0);
558: }
559: }
560: path=path1;
561: image_file=NULL;
562:
563: if(strchr(imagename, '/')==NULL)
564: {
565: /* first check the directory where the exe file is in !! 01may97jaw */
566: if (onlypath(progname))
567: image_file=checkimage(progname, onlypath(progname), imagename);
568: if (!image_file)
569: do {
570: char *pend=strchr(path, PATHSEP);
571: if (pend==NULL)
572: pend=path+strlen(path);
573: if (strlen(path)==0) break;
574: image_file=checkimage(path, pend-path, imagename);
575: path=pend+(*pend==PATHSEP);
576: } while (image_file==NULL);
577: }
578: else
579: { image_file=openimage(imagename);
580: }
581:
582: if (!image_file)
583: { fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
584: progname, imagename, path1);
585: exit(1);
586: }
587:
588: {
589: char path2[strlen(path1)+1];
590: char *p1, *p2;
591: Cell environ[]= {
592: (Cell)argc-(optind-1),
593: (Cell)(argv+(optind-1)),
594: (Cell)strlen(path1),
595: (Cell)path2};
596: argv[optind-1] = progname;
597: /*
598: for (i=0; i<environ[0]; i++)
599: printf("%s\n", ((char **)(environ[1]))[i]);
600: */
601: /* make path OS-independent by replacing path separators with NUL */
602: for (p1=path1, p2=path2; *p1!='\0'; p1++, p2++)
603: if (*p1==PATHSEP)
604: *p2 = '\0';
605: else
606: *p2 = *p1;
607: *p2='\0';
608: retvalue=go_forth(loader(image_file, imagename),4,environ);
609: deprep_terminal();
610: exit(retvalue);
611: }
612: }
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