Annotation of gforth/engine/main.c, revision 1.102
1.1 anton 1: /* command line interpretation, image loading etc. for Gforth
2:
3:
1.96 anton 4: Copyright (C) 1995,1996,1997,1998,2000 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
1.40 anton 20: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.1 anton 21: */
22:
23: #include "config.h"
1.82 anton 24: #include "forth.h"
1.1 anton 25: #include <errno.h>
26: #include <ctype.h>
27: #include <stdio.h>
1.2 pazsan 28: #include <unistd.h>
1.1 anton 29: #include <string.h>
30: #include <math.h>
31: #include <sys/types.h>
1.32 pazsan 32: #ifndef STANDALONE
1.1 anton 33: #include <sys/stat.h>
1.32 pazsan 34: #endif
1.1 anton 35: #include <fcntl.h>
36: #include <assert.h>
37: #include <stdlib.h>
1.102 ! anton 38: #include <signal.h>
1.11 pazsan 39: #ifndef STANDALONE
1.1 anton 40: #if HAVE_SYS_MMAN_H
41: #include <sys/mman.h>
42: #endif
1.11 pazsan 43: #endif
1.1 anton 44: #include "io.h"
45: #include "getopt.h"
1.11 pazsan 46: #ifdef STANDALONE
47: #include <systypes.h>
48: #endif
1.1 anton 49:
1.79 anton 50: /* global variables for engine.c
51: We put them here because engine.c is compiled several times in
52: different ways for the same engine. */
53: Cell *SP;
54: Float *FP;
55: Address UP=NULL;
56:
57: #ifdef GFORTH_DEBUGGING
58: /* define some VM registers as global variables, so they survive exceptions;
59: global register variables are not up to the task (according to the
60: GNU C manual) */
61: Xt *saved_ip;
62: Cell *rp;
63: #endif
64:
65: #ifdef NO_IP
66: Label next_code;
67: #endif
68:
69: #ifdef HAS_FILE
70: char* fileattr[6]={"rb","rb","r+b","r+b","wb","wb"};
71: char* pfileattr[6]={"r","r","r+","r+","w","w"};
72:
73: #ifndef O_BINARY
74: #define O_BINARY 0
75: #endif
76: #ifndef O_TEXT
77: #define O_TEXT 0
78: #endif
79:
80: int ufileattr[6]= {
81: O_RDONLY|O_BINARY, O_RDONLY|O_BINARY,
82: O_RDWR |O_BINARY, O_RDWR |O_BINARY,
83: O_WRONLY|O_BINARY, O_WRONLY|O_BINARY };
84: #endif
85: /* end global vars for engine.c */
86:
1.1 anton 87: #define PRIM_VERSION 1
88: /* increment this whenever the primitives change in an incompatible way */
89:
1.14 pazsan 90: #ifndef DEFAULTPATH
1.39 anton 91: # define DEFAULTPATH "."
1.14 pazsan 92: #endif
93:
1.1 anton 94: #ifdef MSDOS
95: jmp_buf throw_jmp_buf;
96: #endif
97:
1.56 anton 98: #if defined(DOUBLY_INDIRECT)
99: # define CFA(n) ({Cell _n = (n); ((Cell)(((_n & 0x4000) ? symbols : xts)+(_n&~0x4000UL)));})
1.1 anton 100: #else
1.56 anton 101: # define CFA(n) ((Cell)(symbols+((n)&~0x4000UL)))
1.1 anton 102: #endif
103:
104: #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float))
105:
106: static UCell dictsize=0;
107: static UCell dsize=0;
108: static UCell rsize=0;
109: static UCell fsize=0;
110: static UCell lsize=0;
111: int offset_image=0;
1.4 anton 112: int die_on_signal=0;
1.13 pazsan 113: #ifndef INCLUDE_IMAGE
1.1 anton 114: static int clear_dictionary=0;
1.24 anton 115: UCell pagesize=1;
1.22 pazsan 116: char *progname;
117: #else
118: char *progname = "gforth";
119: int optind = 1;
1.13 pazsan 120: #endif
1.31 pazsan 121:
1.97 anton 122: #define CODE_BLOCK_SIZE (256*1024)
1.48 anton 123: Address code_area=0;
1.73 anton 124: Cell code_area_size = CODE_BLOCK_SIZE;
1.75 anton 125: Address code_here=NULL+CODE_BLOCK_SIZE; /* does for code-area what HERE
126: does for the dictionary */
1.100 anton 127: Address start_flush=NULL; /* start of unflushed code */
1.74 anton 128: Cell last_jump=0; /* if the last prim was compiled without jump, this
129: is it's number, otherwise this contains 0 */
1.48 anton 130:
1.60 anton 131: static int no_super=0; /* true if compile_prim should not fuse prims */
1.81 anton 132: static int no_dynamic=NO_DYNAMIC_DEFAULT; /* if true, no code is generated
133: dynamically */
1.60 anton 134:
1.30 pazsan 135: #ifdef HAS_DEBUG
1.68 anton 136: int debug=0;
1.31 pazsan 137: #else
138: # define perror(x...)
139: # define fprintf(x...)
1.30 pazsan 140: #endif
1.31 pazsan 141:
1.24 anton 142: ImageHeader *gforth_header;
1.43 anton 143: Label *vm_prims;
1.53 anton 144: #ifdef DOUBLY_INDIRECT
145: Label *xts; /* same content as vm_prims, but should only be used for xts */
146: #endif
1.1 anton 147:
1.30 pazsan 148: #ifdef MEMCMP_AS_SUBROUTINE
149: int gforth_memcmp(const char * s1, const char * s2, size_t n)
150: {
151: return memcmp(s1, s2, n);
152: }
153: #endif
154:
1.1 anton 155: /* image file format:
1.15 pazsan 156: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
1.1 anton 157: * padding to a multiple of 8
1.84 anton 158: * magic: "Gforth3x" means format 0.6,
1.15 pazsan 159: * where x is a byte with
160: * bit 7: reserved = 0
161: * bit 6:5: address unit size 2^n octets
162: * bit 4:3: character size 2^n octets
163: * bit 2:1: cell size 2^n octets
164: * bit 0: endian, big=0, little=1.
165: * The magic are always 8 octets, no matter what the native AU/character size is
1.1 anton 166: * padding to max alignment (no padding necessary on current machines)
1.24 anton 167: * ImageHeader structure (see forth.h)
1.1 anton 168: * data (size in ImageHeader.image_size)
169: * tags ((if relocatable, 1 bit/data cell)
170: *
171: * tag==1 means that the corresponding word is an address;
172: * If the word is >=0, the address is within the image;
173: * addresses within the image are given relative to the start of the image.
174: * If the word =-1 (CF_NIL), the address is NIL,
175: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
176: * If the word =CF(DODOES), it's a DOES> CFA
177: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
178: * possibly containing a jump to dodoes)
1.51 anton 179: * If the word is <CF(DOESJUMP) and bit 14 is set, it's the xt of a primitive
180: * If the word is <CF(DOESJUMP) and bit 14 is clear,
181: * it's the threaded code of a primitive
1.85 pazsan 182: * bits 13..9 of a primitive token state which group the primitive belongs to,
183: * bits 8..0 of a primitive token index into the group
1.1 anton 184: */
185:
1.85 pazsan 186: static Cell groups[32] = {
187: 0,
1.90 anton 188: #undef GROUP
1.85 pazsan 189: #define GROUP(x, n) DOESJUMP+1+n,
1.86 anton 190: #include "prim_grp.i"
1.90 anton 191: #undef GROUP
1.85 pazsan 192: #define GROUP(x, n)
193: };
194:
1.46 jwilke 195: void relocate(Cell *image, const char *bitstring,
1.90 anton 196: int size, Cell base, Label symbols[])
1.1 anton 197: {
1.16 pazsan 198: int i=0, j, k, steps=(size/sizeof(Cell))/RELINFOBITS;
1.11 pazsan 199: Cell token;
1.1 anton 200: char bits;
1.37 anton 201: Cell max_symbols;
1.46 jwilke 202: /*
1.85 pazsan 203: * A virtual start address that's the real start address minus
1.46 jwilke 204: * the one in the image
205: */
1.45 jwilke 206: Cell *start = (Cell * ) (((void *) image) - ((void *) base));
1.1 anton 207:
1.85 pazsan 208: /* group index into table */
1.46 jwilke 209:
210: /* printf("relocating to %x[%x] start=%x base=%x\n", image, size, start, base); */
1.37 anton 211:
212: for (max_symbols=DOESJUMP+1; symbols[max_symbols]!=0; max_symbols++)
213: ;
1.47 anton 214: max_symbols--;
1.35 pazsan 215: size/=sizeof(Cell);
216:
1.31 pazsan 217: for(k=0; k<=steps; k++) {
1.13 pazsan 218: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.1 anton 219: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
1.35 pazsan 220: if((i < size) && (bits & (1U << (RELINFOBITS-1)))) {
221: /* fprintf(stderr,"relocate: image[%d]=%d of %d\n", i, image[i], size/sizeof(Cell)); */
1.45 jwilke 222: token=image[i];
1.85 pazsan 223: if(token<0) {
224: int group = (-token & 0x3E00) >> 9;
225: if(group == 0) {
226: switch(token|0x4000) {
1.1 anton 227: case CF_NIL : image[i]=0; break;
228: #if !defined(DOUBLY_INDIRECT)
229: case CF(DOCOL) :
230: case CF(DOVAR) :
231: case CF(DOCON) :
232: case CF(DOUSER) :
233: case CF(DODEFER) :
1.11 pazsan 234: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break;
1.92 anton 235: case CF(DOESJUMP): image[i]=0; break;
1.1 anton 236: #endif /* !defined(DOUBLY_INDIRECT) */
237: case CF(DODOES) :
1.45 jwilke 238: MAKE_DOES_CF(image+i,(Xt *)(image[i+1]+((Cell)start)));
1.1 anton 239: break;
1.85 pazsan 240: default : /* backward compatibility */
1.56 anton 241: /* printf("Code field generation image[%x]:=CFA(%x)\n",
1.1 anton 242: i, CF(image[i])); */
1.55 anton 243: if (CF((token | 0x4000))<max_symbols) {
1.56 anton 244: image[i]=(Cell)CFA(CF(token));
245: #ifdef DIRECT_THREADED
246: if ((token & 0x4000) == 0) /* threade code, no CFA */
1.70 anton 247: compile_prim1(&image[i]);
1.56 anton 248: #endif
1.55 anton 249: } else
1.98 anton 250: fprintf(stderr,"Primitive %ld used in this image at $%lx is not implemented by this\n engine (%s); executing this code will crash.\n",(long)CF(token),(long)&image[i],PACKAGE_VERSION);
1.1 anton 251: }
1.85 pazsan 252: } else {
253: int tok = -token & 0x1FF;
254: if (tok < (groups[group+1]-groups[group])) {
255: #if defined(DOUBLY_INDIRECT)
256: image[i]=(Cell)CFA(((groups[group]+tok) | (CF(token) & 0x4000)));
257: #else
258: image[i]=(Cell)CFA((groups[group]+tok));
259: #endif
260: #ifdef DIRECT_THREADED
261: if ((token & 0x4000) == 0) /* threade code, no CFA */
262: compile_prim1(&image[i]);
263: #endif
264: } else
1.98 anton 265: fprintf(stderr,"Primitive %lx, %d of group %d used in this image at $%lx is not implemented by this\n engine (%s); executing this code will crash.\n", (long)-token, tok, group, (long)&image[i],PACKAGE_VERSION);
1.85 pazsan 266: }
267: } else {
1.101 anton 268: /* if base is > 0: 0 is a null reference so don't adjust*/
1.45 jwilke 269: if (token>=base) {
270: image[i]+=(Cell)start;
271: }
1.46 jwilke 272: }
1.1 anton 273: }
274: }
1.31 pazsan 275: }
1.70 anton 276: finish_code();
1.26 jwilke 277: ((ImageHeader*)(image))->base = (Address) image;
1.1 anton 278: }
279:
280: UCell checksum(Label symbols[])
281: {
282: UCell r=PRIM_VERSION;
283: Cell i;
284:
285: for (i=DOCOL; i<=DOESJUMP; i++) {
286: r ^= (UCell)(symbols[i]);
287: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
288: }
289: #ifdef DIRECT_THREADED
290: /* we have to consider all the primitives */
291: for (; symbols[i]!=(Label)0; i++) {
292: r ^= (UCell)(symbols[i]);
293: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
294: }
295: #else
296: /* in indirect threaded code all primitives are accessed through the
297: symbols table, so we just have to put the base address of symbols
298: in the checksum */
299: r ^= (UCell)symbols;
300: #endif
301: return r;
302: }
303:
1.3 anton 304: Address verbose_malloc(Cell size)
305: {
306: Address r;
307: /* leave a little room (64B) for stack underflows */
308: if ((r = malloc(size+64))==NULL) {
309: perror(progname);
310: exit(1);
311: }
312: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
313: if (debug)
314: fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
315: return r;
316: }
317:
1.33 anton 318: static Address next_address=0;
319: void after_alloc(Address r, Cell size)
320: {
321: if (r != (Address)-1) {
322: if (debug)
323: fprintf(stderr, "success, address=$%lx\n", (long) r);
324: if (pagesize != 1)
325: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
326: } else {
327: if (debug)
328: fprintf(stderr, "failed: %s\n", strerror(errno));
329: }
330: }
331:
1.34 anton 332: #ifndef MAP_FAILED
333: #define MAP_FAILED ((Address) -1)
334: #endif
335: #ifndef MAP_FILE
336: # define MAP_FILE 0
337: #endif
338: #ifndef MAP_PRIVATE
339: # define MAP_PRIVATE 0
340: #endif
1.91 anton 341: #if !defined(MAP_ANON) && defined(MAP_ANONYMOUS)
342: # define MAP_ANON MAP_ANONYMOUS
343: #endif
1.34 anton 344:
345: #if defined(HAVE_MMAP)
346: static Address alloc_mmap(Cell size)
1.1 anton 347: {
348: Address r;
349:
350: #if defined(MAP_ANON)
351: if (debug)
352: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
1.34 anton 353: r = mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
1.1 anton 354: #else /* !defined(MAP_ANON) */
1.17 anton 355: /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are
356: apparently defaults) */
1.1 anton 357: static int dev_zero=-1;
358:
359: if (dev_zero == -1)
360: dev_zero = open("/dev/zero", O_RDONLY);
361: if (dev_zero == -1) {
1.34 anton 362: r = MAP_FAILED;
1.1 anton 363: if (debug)
364: fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
365: strerror(errno));
366: } else {
367: if (debug)
368: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
369: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
370: }
371: #endif /* !defined(MAP_ANON) */
1.34 anton 372: after_alloc(r, size);
373: return r;
374: }
375: #endif
376:
377: Address my_alloc(Cell size)
378: {
379: #if HAVE_MMAP
380: Address r;
381:
382: r=alloc_mmap(size);
383: if (r!=MAP_FAILED)
1.1 anton 384: return r;
385: #endif /* HAVE_MMAP */
1.3 anton 386: /* use malloc as fallback */
387: return verbose_malloc(size);
1.1 anton 388: }
389:
1.34 anton 390: Address dict_alloc_read(FILE *file, Cell imagesize, Cell dictsize, Cell offset)
1.33 anton 391: {
1.34 anton 392: Address image = MAP_FAILED;
1.33 anton 393:
1.56 anton 394: #if defined(HAVE_MMAP)
1.33 anton 395: if (offset==0) {
1.34 anton 396: image=alloc_mmap(dictsize);
1.33 anton 397: if (debug)
1.34 anton 398: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FIXED|MAP_FILE, imagefile, 0); ", (long)image, (long)imagesize);
399: image = mmap(image, imagesize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FIXED|MAP_FILE|MAP_PRIVATE, fileno(file), 0);
400: after_alloc(image,dictsize);
1.33 anton 401: }
1.56 anton 402: #endif /* defined(HAVE_MMAP) */
1.34 anton 403: if (image == MAP_FAILED) {
1.56 anton 404: image = my_alloc(dictsize+offset)+offset;
1.33 anton 405: rewind(file); /* fseek(imagefile,0L,SEEK_SET); */
1.34 anton 406: fread(image, 1, imagesize, file);
1.33 anton 407: }
408: return image;
409: }
410:
1.10 pazsan 411: void set_stack_sizes(ImageHeader * header)
412: {
413: if (dictsize==0)
414: dictsize = header->dict_size;
415: if (dsize==0)
416: dsize = header->data_stack_size;
417: if (rsize==0)
418: rsize = header->return_stack_size;
419: if (fsize==0)
420: fsize = header->fp_stack_size;
421: if (lsize==0)
422: lsize = header->locals_stack_size;
423: dictsize=maxaligned(dictsize);
424: dsize=maxaligned(dsize);
425: rsize=maxaligned(rsize);
426: lsize=maxaligned(lsize);
427: fsize=maxaligned(fsize);
428: }
429:
430: void alloc_stacks(ImageHeader * header)
431: {
432: header->dict_size=dictsize;
433: header->data_stack_size=dsize;
434: header->fp_stack_size=fsize;
435: header->return_stack_size=rsize;
436: header->locals_stack_size=lsize;
437:
438: header->data_stack_base=my_alloc(dsize);
439: header->fp_stack_base=my_alloc(fsize);
440: header->return_stack_base=my_alloc(rsize);
441: header->locals_stack_base=my_alloc(lsize);
442: }
443:
1.44 pazsan 444: #warning You can ignore the warnings about clobbered variables in go_forth
1.11 pazsan 445: int go_forth(Address image, int stack, Cell *entries)
446: {
1.38 anton 447: volatile ImageHeader *image_header = (ImageHeader *)image;
1.18 anton 448: Cell *sp0=(Cell*)(image_header->data_stack_base + dsize);
1.44 pazsan 449: Cell *rp0=(Cell *)(image_header->return_stack_base + rsize);
1.18 anton 450: Float *fp0=(Float *)(image_header->fp_stack_base + fsize);
1.44 pazsan 451: #ifdef GFORTH_DEBUGGING
1.38 anton 452: volatile Cell *orig_rp0=rp0;
1.44 pazsan 453: #endif
1.18 anton 454: Address lp0=image_header->locals_stack_base + lsize;
455: Xt *ip0=(Xt *)(image_header->boot_entry);
1.13 pazsan 456: #ifdef SYSSIGNALS
1.11 pazsan 457: int throw_code;
1.13 pazsan 458: #endif
1.11 pazsan 459:
460: /* ensure that the cached elements (if any) are accessible */
1.41 anton 461: IF_spTOS(sp0--);
462: IF_fpTOS(fp0--);
1.11 pazsan 463:
464: for(;stack>0;stack--)
1.18 anton 465: *--sp0=entries[stack-1];
1.11 pazsan 466:
1.30 pazsan 467: #ifdef SYSSIGNALS
1.11 pazsan 468: get_winsize();
469:
470: install_signal_handlers(); /* right place? */
471:
472: if ((throw_code=setjmp(throw_jmp_buf))) {
473: static Cell signal_data_stack[8];
474: static Cell signal_return_stack[8];
475: static Float signal_fp_stack[1];
1.13 pazsan 476:
1.11 pazsan 477: signal_data_stack[7]=throw_code;
1.18 anton 478:
479: #ifdef GFORTH_DEBUGGING
1.97 anton 480: if (debug)
481: fprintf(stderr,"\ncaught signal, throwing exception %d, ip=%p rp=%p\n",
482: throw_code, saved_ip, rp);
1.38 anton 483: if (rp <= orig_rp0 && rp > (Cell *)(image_header->return_stack_base+5)) {
1.18 anton 484: /* no rstack overflow or underflow */
485: rp0 = rp;
1.63 anton 486: *--rp0 = (Cell)saved_ip;
1.18 anton 487: }
488: else /* I love non-syntactic ifdefs :-) */
1.97 anton 489: rp0 = signal_return_stack+8;
490: #else /* !defined(GFORTH_DEBUGGING) */
491: if (debug)
492: fprintf(stderr,"\ncaught signal, throwing exception %d\n", throw_code);
493: rp0 = signal_return_stack+8;
494: #endif /* !defined(GFORTH_DEBUGGING) */
1.25 anton 495: /* fprintf(stderr, "rp=$%x\n",rp0);*/
1.11 pazsan 496:
1.33 anton 497: return((int)(Cell)engine(image_header->throw_entry, signal_data_stack+7,
1.18 anton 498: rp0, signal_fp_stack, 0));
1.11 pazsan 499: }
1.13 pazsan 500: #endif
1.11 pazsan 501:
1.33 anton 502: return((int)(Cell)engine(ip0,sp0,rp0,fp0,lp0));
1.11 pazsan 503: }
504:
1.30 pazsan 505: #ifndef INCLUDE_IMAGE
1.21 anton 506: void print_sizes(Cell sizebyte)
507: /* print size information */
508: {
509: static char* endianstring[]= { " big","little" };
510:
511: fprintf(stderr,"%s endian, cell=%d bytes, char=%d bytes, au=%d bytes\n",
512: endianstring[sizebyte & 1],
513: 1 << ((sizebyte >> 1) & 3),
514: 1 << ((sizebyte >> 3) & 3),
515: 1 << ((sizebyte >> 5) & 3));
516: }
517:
1.70 anton 518: #define MAX_IMMARGS 2
519:
1.69 anton 520: #ifndef NO_DYNAMIC
1.47 anton 521: typedef struct {
522: Label start;
1.74 anton 523: Cell length; /* only includes the jump iff superend is true*/
524: Cell restlength; /* length of the rest (i.e., the jump or (on superend) 0) */
1.70 anton 525: char superend; /* true if primitive ends superinstruction, i.e.,
1.47 anton 526: unconditional branch, execute, etc. */
1.70 anton 527: Cell nimmargs;
528: struct immarg {
529: Cell offset; /* offset of immarg within prim */
530: char rel; /* true if immarg is relative */
531: } immargs[MAX_IMMARGS];
1.47 anton 532: } PrimInfo;
533:
534: PrimInfo *priminfos;
1.76 anton 535: PrimInfo **decomp_prims;
536:
1.90 anton 537: int compare_priminfo_length(const void *_a, const void *_b)
1.76 anton 538: {
1.90 anton 539: PrimInfo **a = (PrimInfo **)_a;
540: PrimInfo **b = (PrimInfo **)_b;
1.77 anton 541: Cell diff = (*a)->length - (*b)->length;
542: if (diff)
543: return diff;
544: else /* break ties by start address; thus the decompiler produces
545: the earliest primitive with the same code (e.g. noop instead
546: of (char) and @ instead of >code-address */
547: return (*b)->start - (*a)->start;
1.76 anton 548: }
549:
1.69 anton 550: #endif /* defined(NO_DYNAMIC) */
1.48 anton 551: Cell npriminfos=0;
1.47 anton 552:
1.76 anton 553:
1.47 anton 554: void check_prims(Label symbols1[])
555: {
556: int i;
1.90 anton 557: #ifndef NO_DYNAMIC
1.70 anton 558: Label *symbols2, *symbols3, *ends1;
1.49 anton 559: static char superend[]={
1.48 anton 560: #include "prim_superend.i"
561: };
1.90 anton 562: #endif
1.47 anton 563:
1.66 anton 564: if (debug)
565: #ifdef __VERSION__
566: fprintf(stderr, "Compiled with gcc-" __VERSION__ "\n");
567: #else
568: #define xstr(s) str(s)
569: #define str(s) #s
570: fprintf(stderr, "Compiled with gcc-" xstr(__GNUC__) "." xstr(__GNUC_MINOR__) "\n");
571: #endif
1.47 anton 572: for (i=DOESJUMP+1; symbols1[i+1]!=0; i++)
573: ;
1.55 anton 574: npriminfos = i;
1.70 anton 575:
576: #ifndef NO_DYNAMIC
1.66 anton 577: if (no_dynamic)
578: return;
1.55 anton 579: symbols2=engine2(0,0,0,0,0);
1.70 anton 580: #if NO_IP
581: symbols3=engine3(0,0,0,0,0);
582: #else
583: symbols3=symbols1;
584: #endif
585: ends1 = symbols1+i+1-DOESJUMP;
1.47 anton 586: priminfos = calloc(i,sizeof(PrimInfo));
587: for (i=DOESJUMP+1; symbols1[i+1]!=0; i++) {
1.70 anton 588: int prim_len = ends1[i]-symbols1[i];
1.47 anton 589: PrimInfo *pi=&priminfos[i];
1.70 anton 590: int j=0;
591: char *s1 = (char *)symbols1[i];
592: char *s2 = (char *)symbols2[i];
593: char *s3 = (char *)symbols3[i];
594:
595: pi->start = s1;
596: pi->superend = superend[i-DOESJUMP-1]|no_super;
597: if (pi->superend)
598: pi->length = symbols1[i+1]-symbols1[i];
599: else
600: pi->length = prim_len;
1.74 anton 601: pi->restlength = symbols1[i+1] - symbols1[i] - pi->length;
1.70 anton 602: pi->nimmargs = 0;
603: if (debug)
1.98 anton 604: fprintf(stderr, "Prim %3d @ %p %p %p, length=%3ld restlength=%2ld superend=%1d",
605: i, s1, s2, s3, (long)(pi->length), (long)(pi->restlength), pi->superend);
1.70 anton 606: assert(prim_len>=0);
1.74 anton 607: while (j<(pi->length+pi->restlength)) {
1.70 anton 608: if (s1[j]==s3[j]) {
609: if (s1[j] != s2[j]) {
610: pi->start = NULL; /* not relocatable */
611: if (debug)
612: fprintf(stderr,"\n non_reloc: engine1!=engine2 offset %3d",j);
1.74 anton 613: /* assert(j<prim_len); */
1.70 anton 614: break;
615: }
616: j++;
617: } else {
618: struct immarg *ia=&pi->immargs[pi->nimmargs];
619:
620: pi->nimmargs++;
621: ia->offset=j;
622: if ((~*(Cell *)&(s1[j]))==*(Cell *)&(s3[j])) {
623: ia->rel=0;
624: if (debug)
625: fprintf(stderr,"\n absolute immarg: offset %3d",j);
626: } else if ((&(s1[j]))+(*(Cell *)&(s1[j]))+4 ==
627: symbols1[DOESJUMP+1]) {
628: ia->rel=1;
629: if (debug)
630: fprintf(stderr,"\n relative immarg: offset %3d",j);
631: } else {
632: pi->start = NULL; /* not relocatable */
633: if (debug)
634: fprintf(stderr,"\n non_reloc: engine1!=engine3 offset %3d",j);
1.74 anton 635: /* assert(j<prim_len);*/
1.70 anton 636: break;
637: }
638: j+=4;
1.47 anton 639: }
640: }
1.70 anton 641: if (debug)
642: fprintf(stderr,"\n");
643: }
1.76 anton 644: decomp_prims = calloc(i,sizeof(PrimInfo *));
645: for (i=DOESJUMP+1; i<npriminfos; i++)
646: decomp_prims[i] = &(priminfos[i]);
647: qsort(decomp_prims+DOESJUMP+1, npriminfos-DOESJUMP-1, sizeof(PrimInfo *),
648: compare_priminfo_length);
1.70 anton 649: #endif
650: }
651:
1.74 anton 652: void flush_to_here(void)
653: {
1.93 anton 654: #ifndef NO_DYNAMIC
1.100 anton 655: if (start_flush)
656: FLUSH_ICACHE(start_flush, code_here-start_flush);
1.74 anton 657: start_flush=code_here;
1.93 anton 658: #endif
1.74 anton 659: }
660:
1.93 anton 661: #ifndef NO_DYNAMIC
1.74 anton 662: void append_jump(void)
663: {
664: if (last_jump) {
665: PrimInfo *pi = &priminfos[last_jump];
666:
667: memcpy(code_here, pi->start+pi->length, pi->restlength);
668: code_here += pi->restlength;
669: last_jump=0;
670: }
671: }
672:
1.75 anton 673: /* Gforth remembers all code blocks in this list. On forgetting (by
674: executing a marker) the code blocks are not freed (because Gforth does
675: not remember how they were allocated; hmm, remembering that might be
676: easier and cleaner). Instead, code_here etc. are reset to the old
677: value, and the "forgotten" code blocks are reused when they are
678: needed. */
679:
680: struct code_block_list {
681: struct code_block_list *next;
682: Address block;
683: Cell size;
684: } *code_block_list=NULL, **next_code_blockp=&code_block_list;
685:
1.74 anton 686: Address append_prim(Cell p)
687: {
688: PrimInfo *pi = &priminfos[p];
689: Address old_code_here = code_here;
690:
691: if (code_area+code_area_size < code_here+pi->length+pi->restlength) {
1.75 anton 692: struct code_block_list *p;
1.74 anton 693: append_jump();
1.93 anton 694: flush_to_here();
1.75 anton 695: if (*next_code_blockp == NULL) {
696: code_here = start_flush = code_area = my_alloc(code_area_size);
697: p = (struct code_block_list *)malloc(sizeof(struct code_block_list));
698: *next_code_blockp = p;
699: p->next = NULL;
700: p->block = code_here;
701: p->size = code_area_size;
702: } else {
703: p = *next_code_blockp;
704: code_here = start_flush = code_area = p->block;
705: }
1.74 anton 706: old_code_here = code_here;
1.75 anton 707: next_code_blockp = &(p->next);
1.74 anton 708: }
709: memcpy(code_here, pi->start, pi->length);
710: code_here += pi->length;
711: return old_code_here;
712: }
713: #endif
1.75 anton 714:
715: int forget_dyncode(Address code)
716: {
717: #ifdef NO_DYNAMIC
718: return -1;
719: #else
720: struct code_block_list *p, **pp;
721:
722: for (pp=&code_block_list, p=*pp; p!=NULL; pp=&(p->next), p=*pp) {
723: if (code >= p->block && code < p->block+p->size) {
724: next_code_blockp = &(p->next);
725: code_here = start_flush = code;
726: code_area = p->block;
727: last_jump = 0;
728: return -1;
729: }
730: }
1.78 anton 731: return -no_dynamic;
1.75 anton 732: #endif /* !defined(NO_DYNAMIC) */
733: }
734:
1.90 anton 735: Label decompile_code(Label _code)
1.75 anton 736: {
1.76 anton 737: #ifdef NO_DYNAMIC
1.90 anton 738: return _code;
1.76 anton 739: #else /* !defined(NO_DYNAMIC) */
740: Cell i;
1.77 anton 741: struct code_block_list *p;
1.90 anton 742: Address code=_code;
1.76 anton 743:
1.77 anton 744: /* first, check if we are in code at all */
745: for (p = code_block_list;; p = p->next) {
746: if (p == NULL)
747: return code;
748: if (code >= p->block && code < p->block+p->size)
749: break;
750: }
1.76 anton 751: /* reverse order because NOOP might match other prims */
752: for (i=npriminfos-1; i>DOESJUMP; i--) {
753: PrimInfo *pi=decomp_prims[i];
754: if (pi->start==code || (pi->start && memcmp(code,pi->start,pi->length)==0))
755: return pi->start;
756: }
757: return code;
758: #endif /* !defined(NO_DYNAMIC) */
1.75 anton 759: }
1.74 anton 760:
1.70 anton 761: #ifdef NO_IP
762: int nbranchinfos=0;
763:
764: struct branchinfo {
765: Label *targetptr; /* *(bi->targetptr) is the target */
766: Cell *addressptr; /* store the target here */
767: } branchinfos[100000];
768:
769: int ndoesexecinfos=0;
770: struct doesexecinfo {
771: int branchinfo; /* fix the targetptr of branchinfos[...->branchinfo] */
772: Cell *xt; /* cfa of word whose does-code needs calling */
773: } doesexecinfos[10000];
774:
1.73 anton 775: /* definitions of N_execute etc. */
776: #include "prim_num.i"
1.70 anton 777:
778: void set_rel_target(Cell *source, Label target)
779: {
780: *source = ((Cell)target)-(((Cell)source)+4);
781: }
782:
783: void register_branchinfo(Label source, Cell targetptr)
784: {
785: struct branchinfo *bi = &(branchinfos[nbranchinfos]);
786: bi->targetptr = (Label *)targetptr;
787: bi->addressptr = (Cell *)source;
788: nbranchinfos++;
789: }
790:
791: Cell *compile_prim1arg(Cell p)
792: {
793: int l = priminfos[p].length;
794: Address old_code_here=code_here;
795:
1.74 anton 796: assert(vm_prims[p]==priminfos[p].start);
797: append_prim(p);
1.70 anton 798: return (Cell*)(old_code_here+priminfos[p].immargs[0].offset);
799: }
800:
801: Cell *compile_call2(Cell targetptr)
802: {
803: Cell *next_code_target;
1.73 anton 804: PrimInfo *pi = &priminfos[N_call2];
1.74 anton 805: Address old_code_here = append_prim(N_call2);
1.70 anton 806:
1.74 anton 807: next_code_target = (Cell *)(old_code_here + pi->immargs[0].offset);
808: register_branchinfo(old_code_here + pi->immargs[1].offset, targetptr);
1.70 anton 809: return next_code_target;
810: }
811: #endif
812:
813: void finish_code(void)
814: {
815: #ifdef NO_IP
816: Cell i;
817:
818: compile_prim1(NULL);
819: for (i=0; i<ndoesexecinfos; i++) {
820: struct doesexecinfo *dei = &doesexecinfos[i];
821: branchinfos[dei->branchinfo].targetptr = DOES_CODE1((dei->xt));
822: }
823: ndoesexecinfos = 0;
824: for (i=0; i<nbranchinfos; i++) {
825: struct branchinfo *bi=&branchinfos[i];
826: set_rel_target(bi->addressptr, *(bi->targetptr));
827: }
828: nbranchinfos = 0;
1.48 anton 829: #endif
1.93 anton 830: flush_to_here();
1.48 anton 831: }
832:
1.70 anton 833: void compile_prim1(Cell *start)
1.48 anton 834: {
1.61 anton 835: #if defined(DOUBLY_INDIRECT)
1.70 anton 836: Label prim=(Label)*start;
1.54 anton 837: if (prim<((Label)(xts+DOESJUMP)) || prim>((Label)(xts+npriminfos))) {
838: fprintf(stderr,"compile_prim encountered xt %p\n", prim);
1.70 anton 839: *start=(Cell)prim;
840: return;
841: } else {
1.90 anton 842: *start = (Cell)(prim-((Label)xts)+((Label)vm_prims));
1.70 anton 843: return;
844: }
845: #elif defined(NO_IP)
846: static Cell *last_start=NULL;
847: static Xt last_prim=NULL;
848: /* delay work by one call in order to get relocated immargs */
849:
850: if (last_start) {
851: unsigned i = last_prim-vm_prims;
852: PrimInfo *pi=&priminfos[i];
853: Cell *next_code_target=NULL;
854:
855: assert(i<npriminfos);
1.73 anton 856: if (i==N_execute||i==N_perform||i==N_lit_perform) {
857: next_code_target = compile_prim1arg(N_set_next_code);
1.70 anton 858: }
1.73 anton 859: if (i==N_call) {
1.70 anton 860: next_code_target = compile_call2(last_start[1]);
1.73 anton 861: } else if (i==N_does_exec) {
1.70 anton 862: struct doesexecinfo *dei = &doesexecinfos[ndoesexecinfos++];
1.73 anton 863: *compile_prim1arg(N_lit) = (Cell)PFA(last_start[1]);
1.70 anton 864: /* we cannot determine the callee now (last_start[1] may be a
865: forward reference), so just register an arbitrary target, and
866: register in dei that we need to fix this before resolving
867: branches */
868: dei->branchinfo = nbranchinfos;
869: dei->xt = (Cell *)(last_start[1]);
870: next_code_target = compile_call2(NULL);
871: } else if (pi->start == NULL) { /* non-reloc */
1.73 anton 872: next_code_target = compile_prim1arg(N_set_next_code);
873: set_rel_target(compile_prim1arg(N_abranch),*(Xt)last_prim);
1.70 anton 874: } else {
875: unsigned j;
1.74 anton 876: Address old_code_here = append_prim(i);
1.70 anton 877:
878: for (j=0; j<pi->nimmargs; j++) {
879: struct immarg *ia = &(pi->immargs[j]);
880: Cell argval = last_start[pi->nimmargs - j]; /* !! specific to prims */
881: if (ia->rel) { /* !! assumption: relative refs are branches */
1.74 anton 882: register_branchinfo(old_code_here + ia->offset, argval);
1.70 anton 883: } else /* plain argument */
1.74 anton 884: *(Cell *)(old_code_here + ia->offset) = argval;
1.70 anton 885: }
886: }
887: if (next_code_target!=NULL)
888: *next_code_target = (Cell)code_here;
889: }
890: if (start) {
891: last_prim = (Xt)*start;
892: *start = (Cell)code_here;
893: }
894: last_start = start;
895: return;
896: #elif !defined(NO_DYNAMIC)
897: Label prim=(Label)*start;
1.58 anton 898: unsigned i;
1.74 anton 899: Address old_code_here;
1.48 anton 900:
1.58 anton 901: i = ((Xt)prim)-vm_prims;
1.56 anton 902: prim = *(Xt)prim;
1.70 anton 903: if (no_dynamic) {
904: *start = (Cell)prim;
905: return;
906: }
1.58 anton 907: if (i>=npriminfos || priminfos[i].start == 0) { /* not a relocatable prim */
1.74 anton 908: append_jump();
1.70 anton 909: *start = (Cell)prim;
910: return;
1.47 anton 911: }
1.58 anton 912: assert(priminfos[i].start = prim);
1.50 anton 913: #ifdef ALIGN_CODE
1.87 anton 914: /* ALIGN_CODE;*/
1.50 anton 915: #endif
1.74 anton 916: assert(prim==priminfos[i].start);
917: old_code_here = append_prim(i);
918: last_jump = (priminfos[i].superend) ? 0 : i;
1.70 anton 919: *start = (Cell)old_code_here;
920: return;
1.61 anton 921: #else /* !defined(DOUBLY_INDIRECT), no code replication */
1.70 anton 922: Label prim=(Label)*start;
1.61 anton 923: #if !defined(INDIRECT_THREADED)
1.56 anton 924: prim = *(Xt)prim;
1.61 anton 925: #endif
1.70 anton 926: *start = (Cell)prim;
927: return;
1.54 anton 928: #endif /* !defined(DOUBLY_INDIRECT) */
1.70 anton 929: }
930:
931: Label compile_prim(Label prim)
932: {
933: Cell x=(Cell)prim;
1.80 anton 934: assert(0);
1.70 anton 935: compile_prim1(&x);
936: return (Label)x;
1.47 anton 937: }
938:
1.69 anton 939: #if defined(PRINT_SUPER_LENGTHS) && !defined(NO_DYNAMIC)
1.59 anton 940: Cell prim_length(Cell prim)
941: {
942: return priminfos[prim+DOESJUMP+1].length;
943: }
944: #endif
945:
1.1 anton 946: Address loader(FILE *imagefile, char* filename)
947: /* returns the address of the image proper (after the preamble) */
948: {
949: ImageHeader header;
950: Address image;
951: Address imp; /* image+preamble */
1.17 anton 952: Char magic[8];
953: char magic7; /* size byte of magic number */
1.1 anton 954: Cell preamblesize=0;
1.6 pazsan 955: Cell data_offset = offset_image ? 56*sizeof(Cell) : 0;
1.1 anton 956: UCell check_sum;
1.15 pazsan 957: Cell ausize = ((RELINFOBITS == 8) ? 0 :
958: (RELINFOBITS == 16) ? 1 :
959: (RELINFOBITS == 32) ? 2 : 3);
960: Cell charsize = ((sizeof(Char) == 1) ? 0 :
961: (sizeof(Char) == 2) ? 1 :
962: (sizeof(Char) == 4) ? 2 : 3) + ausize;
963: Cell cellsize = ((sizeof(Cell) == 1) ? 0 :
964: (sizeof(Cell) == 2) ? 1 :
965: (sizeof(Cell) == 4) ? 2 : 3) + ausize;
1.21 anton 966: Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) +
967: #ifdef WORDS_BIGENDIAN
968: 0
969: #else
970: 1
971: #endif
972: ;
1.1 anton 973:
1.43 anton 974: vm_prims = engine(0,0,0,0,0);
1.47 anton 975: check_prims(vm_prims);
1.1 anton 976: #ifndef DOUBLY_INDIRECT
1.59 anton 977: #ifdef PRINT_SUPER_LENGTHS
978: print_super_lengths();
979: #endif
1.43 anton 980: check_sum = checksum(vm_prims);
1.1 anton 981: #else /* defined(DOUBLY_INDIRECT) */
1.43 anton 982: check_sum = (UCell)vm_prims;
1.1 anton 983: #endif /* defined(DOUBLY_INDIRECT) */
1.10 pazsan 984:
985: do {
986: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.84 anton 987: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.6) image.\n",
1.10 pazsan 988: progname, filename);
989: exit(1);
1.1 anton 990: }
1.10 pazsan 991: preamblesize+=8;
1.84 anton 992: } while(memcmp(magic,"Gforth3",7));
1.17 anton 993: magic7 = magic[7];
1.1 anton 994: if (debug) {
1.17 anton 995: magic[7]='\0';
1.21 anton 996: fprintf(stderr,"Magic found: %s ", magic);
997: print_sizes(magic7);
1.1 anton 998: }
999:
1.21 anton 1000: if (magic7 != sizebyte)
1001: {
1002: fprintf(stderr,"This image is: ");
1003: print_sizes(magic7);
1004: fprintf(stderr,"whereas the machine is ");
1005: print_sizes(sizebyte);
1.1 anton 1006: exit(-2);
1007: };
1008:
1009: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.10 pazsan 1010:
1011: set_stack_sizes(&header);
1.1 anton 1012:
1013: #if HAVE_GETPAGESIZE
1014: pagesize=getpagesize(); /* Linux/GNU libc offers this */
1015: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
1016: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
1017: #elif PAGESIZE
1018: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
1019: #endif
1020: if (debug)
1.5 jwilke 1021: fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 1022:
1.34 anton 1023: image = dict_alloc_read(imagefile, preamblesize+header.image_size,
1024: preamblesize+dictsize, data_offset);
1.33 anton 1025: imp=image+preamblesize;
1.57 anton 1026: alloc_stacks((ImageHeader *)imp);
1.1 anton 1027: if (clear_dictionary)
1.33 anton 1028: memset(imp+header.image_size, 0, dictsize-header.image_size);
1.90 anton 1029: if(header.base==0 || header.base == (Address)0x100) {
1.1 anton 1030: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
1031: char reloc_bits[reloc_size];
1.33 anton 1032: fseek(imagefile, preamblesize+header.image_size, SEEK_SET);
1.10 pazsan 1033: fread(reloc_bits, 1, reloc_size, imagefile);
1.90 anton 1034: relocate((Cell *)imp, reloc_bits, header.image_size, (Cell)header.base, vm_prims);
1.1 anton 1035: #if 0
1036: { /* let's see what the relocator did */
1037: FILE *snapshot=fopen("snapshot.fi","wb");
1038: fwrite(image,1,imagesize,snapshot);
1039: fclose(snapshot);
1040: }
1041: #endif
1.46 jwilke 1042: }
1043: else if(header.base!=imp) {
1044: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
1045: progname, (unsigned long)header.base, (unsigned long)imp);
1046: exit(1);
1.1 anton 1047: }
1048: if (header.checksum==0)
1049: ((ImageHeader *)imp)->checksum=check_sum;
1050: else if (header.checksum != check_sum) {
1051: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
1052: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
1053: exit(1);
1054: }
1.53 anton 1055: #ifdef DOUBLY_INDIRECT
1056: ((ImageHeader *)imp)->xt_base = xts;
1057: #endif
1.1 anton 1058: fclose(imagefile);
1059:
1.56 anton 1060: /* unnecessary, except maybe for CODE words */
1061: /* FLUSH_ICACHE(imp, header.image_size);*/
1.1 anton 1062:
1063: return imp;
1064: }
1065:
1.72 anton 1066: /* pointer to last '/' or '\' in file, 0 if there is none. */
1067: char *onlypath(char *filename)
1.10 pazsan 1068: {
1.72 anton 1069: return strrchr(filename, DIRSEP);
1.1 anton 1070: }
1071:
1072: FILE *openimage(char *fullfilename)
1.10 pazsan 1073: {
1074: FILE *image_file;
1.28 anton 1075: char * expfilename = tilde_cstr(fullfilename, strlen(fullfilename), 1);
1.10 pazsan 1076:
1.28 anton 1077: image_file=fopen(expfilename,"rb");
1.1 anton 1078: if (image_file!=NULL && debug)
1.28 anton 1079: fprintf(stderr, "Opened image file: %s\n", expfilename);
1.10 pazsan 1080: return image_file;
1.1 anton 1081: }
1082:
1.28 anton 1083: /* try to open image file concat(path[0:len],imagename) */
1.1 anton 1084: FILE *checkimage(char *path, int len, char *imagename)
1.10 pazsan 1085: {
1086: int dirlen=len;
1.1 anton 1087: char fullfilename[dirlen+strlen(imagename)+2];
1.10 pazsan 1088:
1.1 anton 1089: memcpy(fullfilename, path, dirlen);
1.71 pazsan 1090: if (fullfilename[dirlen-1]!=DIRSEP)
1091: fullfilename[dirlen++]=DIRSEP;
1.1 anton 1092: strcpy(fullfilename+dirlen,imagename);
1.10 pazsan 1093: return openimage(fullfilename);
1.1 anton 1094: }
1095:
1.10 pazsan 1096: FILE * open_image_file(char * imagename, char * path)
1.1 anton 1097: {
1.10 pazsan 1098: FILE * image_file=NULL;
1.28 anton 1099: char *origpath=path;
1.10 pazsan 1100:
1.71 pazsan 1101: if(strchr(imagename, DIRSEP)==NULL) {
1.10 pazsan 1102: /* first check the directory where the exe file is in !! 01may97jaw */
1103: if (onlypath(progname))
1.72 anton 1104: image_file=checkimage(progname, onlypath(progname)-progname, imagename);
1.10 pazsan 1105: if (!image_file)
1106: do {
1107: char *pend=strchr(path, PATHSEP);
1108: if (pend==NULL)
1109: pend=path+strlen(path);
1110: if (strlen(path)==0) break;
1111: image_file=checkimage(path, pend-path, imagename);
1112: path=pend+(*pend==PATHSEP);
1113: } while (image_file==NULL);
1114: } else {
1115: image_file=openimage(imagename);
1116: }
1.1 anton 1117:
1.10 pazsan 1118: if (!image_file) {
1119: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
1.28 anton 1120: progname, imagename, origpath);
1.10 pazsan 1121: exit(1);
1.7 anton 1122: }
1123:
1.10 pazsan 1124: return image_file;
1125: }
1.11 pazsan 1126: #endif
1127:
1128: #ifdef HAS_OS
1129: UCell convsize(char *s, UCell elemsize)
1130: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
1131: of bytes. the letter at the end indicates the unit, where e stands
1132: for the element size. default is e */
1133: {
1134: char *endp;
1135: UCell n,m;
1136:
1137: m = elemsize;
1138: n = strtoul(s,&endp,0);
1139: if (endp!=NULL) {
1140: if (strcmp(endp,"b")==0)
1141: m=1;
1142: else if (strcmp(endp,"k")==0)
1143: m=1024;
1144: else if (strcmp(endp,"M")==0)
1145: m=1024*1024;
1146: else if (strcmp(endp,"G")==0)
1147: m=1024*1024*1024;
1148: else if (strcmp(endp,"T")==0) {
1149: #if (SIZEOF_CHAR_P > 4)
1.24 anton 1150: m=1024L*1024*1024*1024;
1.11 pazsan 1151: #else
1152: fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp);
1153: exit(1);
1154: #endif
1155: } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
1156: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
1157: exit(1);
1158: }
1159: }
1160: return n*m;
1161: }
1.10 pazsan 1162:
1163: void gforth_args(int argc, char ** argv, char ** path, char ** imagename)
1164: {
1165: int c;
1166:
1.1 anton 1167: opterr=0;
1168: while (1) {
1169: int option_index=0;
1170: static struct option opts[] = {
1.29 anton 1171: {"appl-image", required_argument, NULL, 'a'},
1.1 anton 1172: {"image-file", required_argument, NULL, 'i'},
1173: {"dictionary-size", required_argument, NULL, 'm'},
1174: {"data-stack-size", required_argument, NULL, 'd'},
1175: {"return-stack-size", required_argument, NULL, 'r'},
1176: {"fp-stack-size", required_argument, NULL, 'f'},
1177: {"locals-stack-size", required_argument, NULL, 'l'},
1178: {"path", required_argument, NULL, 'p'},
1179: {"version", no_argument, NULL, 'v'},
1180: {"help", no_argument, NULL, 'h'},
1181: /* put something != 0 into offset_image */
1182: {"offset-image", no_argument, &offset_image, 1},
1183: {"no-offset-im", no_argument, &offset_image, 0},
1184: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 1185: {"die-on-signal", no_argument, &die_on_signal, 1},
1.1 anton 1186: {"debug", no_argument, &debug, 1},
1.60 anton 1187: {"no-super", no_argument, &no_super, 1},
1188: {"no-dynamic", no_argument, &no_dynamic, 1},
1.66 anton 1189: {"dynamic", no_argument, &no_dynamic, 0},
1.1 anton 1190: {0,0,0,0}
1191: /* no-init-file, no-rc? */
1192: };
1193:
1.36 pazsan 1194: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vhoncsx", opts, &option_index);
1.1 anton 1195:
1196: switch (c) {
1.29 anton 1197: case EOF: return;
1198: case '?': optind--; return;
1199: case 'a': *imagename = optarg; return;
1.10 pazsan 1200: case 'i': *imagename = optarg; break;
1.1 anton 1201: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
1202: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
1203: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
1204: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
1205: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.10 pazsan 1206: case 'p': *path = optarg; break;
1.36 pazsan 1207: case 'o': offset_image = 1; break;
1208: case 'n': offset_image = 0; break;
1209: case 'c': clear_dictionary = 1; break;
1210: case 's': die_on_signal = 1; break;
1211: case 'x': debug = 1; break;
1.83 anton 1212: case 'v': fputs(PACKAGE_STRING"\n", stderr); exit(0);
1.1 anton 1213: case 'h':
1.29 anton 1214: fprintf(stderr, "Usage: %s [engine options] ['--'] [image arguments]\n\
1.1 anton 1215: Engine Options:\n\
1.29 anton 1216: --appl-image FILE equivalent to '--image-file=FILE --'\n\
1.10 pazsan 1217: --clear-dictionary Initialize the dictionary with 0 bytes\n\
1218: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
1219: --debug Print debugging information during startup\n\
1220: --die-on-signal exit instead of CATCHing some signals\n\
1.66 anton 1221: --dynamic use dynamic native code\n\
1.10 pazsan 1222: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
1223: -h, --help Print this message and exit\n\
1224: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
1225: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
1226: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
1.60 anton 1227: --no-dynamic Use only statically compiled primitives\n\
1.10 pazsan 1228: --no-offset-im Load image at normal position\n\
1.60 anton 1229: --no-super No dynamically formed superinstructions\n\
1.10 pazsan 1230: --offset-image Load image at a different position\n\
1231: -p PATH, --path=PATH Search path for finding image and sources\n\
1232: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
1.66 anton 1233: -v, --version Print engine version and exit\n\
1.1 anton 1234: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.10 pazsan 1235: `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n",
1236: argv[0]);
1237: optind--;
1238: return;
1.1 anton 1239: }
1240: }
1.10 pazsan 1241: }
1.11 pazsan 1242: #endif
1.10 pazsan 1243:
1244: #ifdef INCLUDE_IMAGE
1245: extern Cell image[];
1246: extern const char reloc_bits[];
1247: #endif
1.67 pazsan 1248:
1.10 pazsan 1249: int main(int argc, char **argv, char **env)
1250: {
1.30 pazsan 1251: #ifdef HAS_OS
1.10 pazsan 1252: char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
1.30 pazsan 1253: #else
1254: char *path = DEFAULTPATH;
1255: #endif
1.13 pazsan 1256: #ifndef INCLUDE_IMAGE
1.10 pazsan 1257: char *imagename="gforth.fi";
1258: FILE *image_file;
1259: Address image;
1260: #endif
1261: int retvalue;
1262:
1.56 anton 1263: #if defined(i386) && defined(ALIGNMENT_CHECK)
1.10 pazsan 1264: /* turn on alignment checks on the 486.
1265: * on the 386 this should have no effect. */
1266: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
1267: /* this is unusable with Linux' libc.4.6.27, because this library is
1268: not alignment-clean; we would have to replace some library
1269: functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep
1270: the stack FP-aligned. */
1271: #endif
1272:
1273: /* buffering of the user output device */
1.11 pazsan 1274: #ifdef _IONBF
1.10 pazsan 1275: if (isatty(fileno(stdout))) {
1276: fflush(stdout);
1277: setvbuf(stdout,NULL,_IONBF,0);
1.1 anton 1278: }
1.11 pazsan 1279: #endif
1.1 anton 1280:
1.10 pazsan 1281: progname = argv[0];
1282:
1.11 pazsan 1283: #ifdef HAS_OS
1.10 pazsan 1284: gforth_args(argc, argv, &path, &imagename);
1.11 pazsan 1285: #endif
1.10 pazsan 1286:
1287: #ifdef INCLUDE_IMAGE
1288: set_stack_sizes((ImageHeader *)image);
1.22 pazsan 1289: if(((ImageHeader *)image)->base != image)
1290: relocate(image, reloc_bits, ((ImageHeader *)image)->image_size,
1291: (Label*)engine(0, 0, 0, 0, 0));
1.10 pazsan 1292: alloc_stacks((ImageHeader *)image);
1293: #else
1294: image_file = open_image_file(imagename, path);
1295: image = loader(image_file, imagename);
1296: #endif
1.24 anton 1297: gforth_header=(ImageHeader *)image; /* used in SIGSEGV handler */
1.1 anton 1298:
1299: {
1.10 pazsan 1300: char path2[strlen(path)+1];
1.1 anton 1301: char *p1, *p2;
1302: Cell environ[]= {
1303: (Cell)argc-(optind-1),
1304: (Cell)(argv+(optind-1)),
1.10 pazsan 1305: (Cell)strlen(path),
1.1 anton 1306: (Cell)path2};
1307: argv[optind-1] = progname;
1308: /*
1309: for (i=0; i<environ[0]; i++)
1310: printf("%s\n", ((char **)(environ[1]))[i]);
1311: */
1312: /* make path OS-independent by replacing path separators with NUL */
1.10 pazsan 1313: for (p1=path, p2=path2; *p1!='\0'; p1++, p2++)
1.1 anton 1314: if (*p1==PATHSEP)
1315: *p2 = '\0';
1316: else
1317: *p2 = *p1;
1318: *p2='\0';
1.10 pazsan 1319: retvalue = go_forth(image, 4, environ);
1.102 ! anton 1320: #ifdef SIGPIPE
! 1321: bsd_signal(SIGPIPE, SIG_IGN);
! 1322: #endif
1.42 anton 1323: #ifdef VM_PROFILING
1324: vm_print_profile(stderr);
1325: #endif
1.1 anton 1326: deprep_terminal();
1327: }
1.13 pazsan 1328: return retvalue;
1.1 anton 1329: }
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