Annotation of gforth/engine/main.c, revision 1.70
1.1 anton 1: /* command line interpretation, image loading etc. for Gforth
2:
3:
1.39 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"
24: #include <errno.h>
25: #include <ctype.h>
26: #include <stdio.h>
1.2 pazsan 27: #include <unistd.h>
1.1 anton 28: #include <string.h>
29: #include <math.h>
30: #include <sys/types.h>
1.32 pazsan 31: #ifndef STANDALONE
1.1 anton 32: #include <sys/stat.h>
1.32 pazsan 33: #endif
1.1 anton 34: #include <fcntl.h>
35: #include <assert.h>
36: #include <stdlib.h>
1.11 pazsan 37: #ifndef STANDALONE
1.1 anton 38: #if HAVE_SYS_MMAN_H
39: #include <sys/mman.h>
40: #endif
1.11 pazsan 41: #endif
1.1 anton 42: #include "forth.h"
43: #include "io.h"
44: #include "getopt.h"
1.11 pazsan 45: #ifdef STANDALONE
46: #include <systypes.h>
47: #endif
1.1 anton 48:
49: #define PRIM_VERSION 1
50: /* increment this whenever the primitives change in an incompatible way */
51:
1.14 pazsan 52: #ifndef DEFAULTPATH
1.39 anton 53: # define DEFAULTPATH "."
1.14 pazsan 54: #endif
55:
1.1 anton 56: #ifdef MSDOS
57: jmp_buf throw_jmp_buf;
58: #endif
59:
1.56 anton 60: #if defined(DOUBLY_INDIRECT)
61: # define CFA(n) ({Cell _n = (n); ((Cell)(((_n & 0x4000) ? symbols : xts)+(_n&~0x4000UL)));})
1.1 anton 62: #else
1.56 anton 63: # define CFA(n) ((Cell)(symbols+((n)&~0x4000UL)))
1.1 anton 64: #endif
65:
66: #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float))
67:
68: static UCell dictsize=0;
69: static UCell dsize=0;
70: static UCell rsize=0;
71: static UCell fsize=0;
72: static UCell lsize=0;
73: int offset_image=0;
1.4 anton 74: int die_on_signal=0;
1.13 pazsan 75: #ifndef INCLUDE_IMAGE
1.1 anton 76: static int clear_dictionary=0;
1.24 anton 77: UCell pagesize=1;
1.22 pazsan 78: char *progname;
79: #else
80: char *progname = "gforth";
81: int optind = 1;
1.13 pazsan 82: #endif
1.31 pazsan 83:
1.48 anton 84: Address code_area=0;
85: Address code_here=0; /* does for code-area what HERE does for the dictionary */
1.65 anton 86: Address start_flush=0; /* start of unflushed code */
1.48 anton 87:
1.60 anton 88: static int no_super=0; /* true if compile_prim should not fuse prims */
1.66 anton 89: /* --no-dynamic by default on gcc versions >=3.1 (it works with 3.0.4,
90: but not with 3.2) */
91: #if (__GNUC__>2 && __GNUC_MINOR__>=1)
1.64 anton 92: static int no_dynamic=1; /* true if compile_prim should not generate code */
1.66 anton 93: #else
94: static int no_dynamic=0; /* true if compile_prim should not generate code */
95: #endif
1.60 anton 96:
1.30 pazsan 97: #ifdef HAS_DEBUG
1.68 anton 98: int debug=0;
1.31 pazsan 99: #else
100: # define perror(x...)
101: # define fprintf(x...)
1.30 pazsan 102: #endif
1.31 pazsan 103:
1.24 anton 104: ImageHeader *gforth_header;
1.43 anton 105: Label *vm_prims;
1.53 anton 106: #ifdef DOUBLY_INDIRECT
107: Label *xts; /* same content as vm_prims, but should only be used for xts */
108: #endif
1.1 anton 109:
1.30 pazsan 110: #ifdef MEMCMP_AS_SUBROUTINE
111: int gforth_memcmp(const char * s1, const char * s2, size_t n)
112: {
113: return memcmp(s1, s2, n);
114: }
115: #endif
116:
1.1 anton 117: /* image file format:
1.15 pazsan 118: * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n")
1.1 anton 119: * padding to a multiple of 8
1.15 pazsan 120: * magic: "Gforth2x" means format 0.4,
121: * where x is a byte with
122: * bit 7: reserved = 0
123: * bit 6:5: address unit size 2^n octets
124: * bit 4:3: character size 2^n octets
125: * bit 2:1: cell size 2^n octets
126: * bit 0: endian, big=0, little=1.
127: * The magic are always 8 octets, no matter what the native AU/character size is
1.1 anton 128: * padding to max alignment (no padding necessary on current machines)
1.24 anton 129: * ImageHeader structure (see forth.h)
1.1 anton 130: * data (size in ImageHeader.image_size)
131: * tags ((if relocatable, 1 bit/data cell)
132: *
133: * tag==1 means that the corresponding word is an address;
134: * If the word is >=0, the address is within the image;
135: * addresses within the image are given relative to the start of the image.
136: * If the word =-1 (CF_NIL), the address is NIL,
137: * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...)
138: * If the word =CF(DODOES), it's a DOES> CFA
139: * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>,
140: * possibly containing a jump to dodoes)
1.51 anton 141: * If the word is <CF(DOESJUMP) and bit 14 is set, it's the xt of a primitive
142: * If the word is <CF(DOESJUMP) and bit 14 is clear,
143: * it's the threaded code of a primitive
1.1 anton 144: */
145:
1.46 jwilke 146: void relocate(Cell *image, const char *bitstring,
147: int size, int base, Label symbols[])
1.1 anton 148: {
1.16 pazsan 149: int i=0, j, k, steps=(size/sizeof(Cell))/RELINFOBITS;
1.11 pazsan 150: Cell token;
1.1 anton 151: char bits;
1.37 anton 152: Cell max_symbols;
1.46 jwilke 153: /*
154: * A virtial start address that's the real start address minus
155: * the one in the image
156: */
1.45 jwilke 157: Cell *start = (Cell * ) (((void *) image) - ((void *) base));
1.1 anton 158:
1.46 jwilke 159:
160: /* printf("relocating to %x[%x] start=%x base=%x\n", image, size, start, base); */
1.37 anton 161:
162: for (max_symbols=DOESJUMP+1; symbols[max_symbols]!=0; max_symbols++)
163: ;
1.47 anton 164: max_symbols--;
1.35 pazsan 165: size/=sizeof(Cell);
166:
1.31 pazsan 167: for(k=0; k<=steps; k++) {
1.13 pazsan 168: for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) {
1.1 anton 169: /* fprintf(stderr,"relocate: image[%d]\n", i);*/
1.35 pazsan 170: if((i < size) && (bits & (1U << (RELINFOBITS-1)))) {
171: /* fprintf(stderr,"relocate: image[%d]=%d of %d\n", i, image[i], size/sizeof(Cell)); */
1.45 jwilke 172: token=image[i];
173: if(token<0)
1.55 anton 174: switch(token|0x4000)
1.1 anton 175: {
176: case CF_NIL : image[i]=0; break;
177: #if !defined(DOUBLY_INDIRECT)
178: case CF(DOCOL) :
179: case CF(DOVAR) :
180: case CF(DOCON) :
181: case CF(DOUSER) :
182: case CF(DODEFER) :
1.11 pazsan 183: case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break;
1.1 anton 184: case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break;
185: #endif /* !defined(DOUBLY_INDIRECT) */
186: case CF(DODOES) :
1.45 jwilke 187: MAKE_DOES_CF(image+i,(Xt *)(image[i+1]+((Cell)start)));
1.1 anton 188: break;
189: default :
1.56 anton 190: /* printf("Code field generation image[%x]:=CFA(%x)\n",
1.1 anton 191: i, CF(image[i])); */
1.55 anton 192: if (CF((token | 0x4000))<max_symbols) {
1.56 anton 193: image[i]=(Cell)CFA(CF(token));
194: #ifdef DIRECT_THREADED
195: if ((token & 0x4000) == 0) /* threade code, no CFA */
1.70 ! anton 196: compile_prim1(&image[i]);
1.56 anton 197: #endif
1.55 anton 198: } else
1.37 anton 199: fprintf(stderr,"Primitive %d used in this image at $%lx is not implemented by this\n engine (%s); executing this code will crash.\n",CF(token),(long)&image[i],VERSION);
1.1 anton 200: }
1.46 jwilke 201: else {
1.45 jwilke 202: // if base is > 0: 0 is a null reference so don't adjust
203: if (token>=base) {
204: image[i]+=(Cell)start;
205: }
1.46 jwilke 206: }
1.1 anton 207: }
208: }
1.31 pazsan 209: }
1.70 ! anton 210: finish_code();
1.26 jwilke 211: ((ImageHeader*)(image))->base = (Address) image;
1.1 anton 212: }
213:
214: UCell checksum(Label symbols[])
215: {
216: UCell r=PRIM_VERSION;
217: Cell i;
218:
219: for (i=DOCOL; i<=DOESJUMP; i++) {
220: r ^= (UCell)(symbols[i]);
221: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
222: }
223: #ifdef DIRECT_THREADED
224: /* we have to consider all the primitives */
225: for (; symbols[i]!=(Label)0; i++) {
226: r ^= (UCell)(symbols[i]);
227: r = (r << 5) | (r >> (8*sizeof(Cell)-5));
228: }
229: #else
230: /* in indirect threaded code all primitives are accessed through the
231: symbols table, so we just have to put the base address of symbols
232: in the checksum */
233: r ^= (UCell)symbols;
234: #endif
235: return r;
236: }
237:
1.3 anton 238: Address verbose_malloc(Cell size)
239: {
240: Address r;
241: /* leave a little room (64B) for stack underflows */
242: if ((r = malloc(size+64))==NULL) {
243: perror(progname);
244: exit(1);
245: }
246: r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float)));
247: if (debug)
248: fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r);
249: return r;
250: }
251:
1.33 anton 252: static Address next_address=0;
253: void after_alloc(Address r, Cell size)
254: {
255: if (r != (Address)-1) {
256: if (debug)
257: fprintf(stderr, "success, address=$%lx\n", (long) r);
258: if (pagesize != 1)
259: next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */
260: } else {
261: if (debug)
262: fprintf(stderr, "failed: %s\n", strerror(errno));
263: }
264: }
265:
1.34 anton 266: #ifndef MAP_FAILED
267: #define MAP_FAILED ((Address) -1)
268: #endif
269: #ifndef MAP_FILE
270: # define MAP_FILE 0
271: #endif
272: #ifndef MAP_PRIVATE
273: # define MAP_PRIVATE 0
274: #endif
275:
276: #if defined(HAVE_MMAP)
277: static Address alloc_mmap(Cell size)
1.1 anton 278: {
279: Address r;
280:
281: #if defined(MAP_ANON)
282: if (debug)
283: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size);
1.34 anton 284: r = mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0);
1.1 anton 285: #else /* !defined(MAP_ANON) */
1.17 anton 286: /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are
287: apparently defaults) */
1.1 anton 288: static int dev_zero=-1;
289:
290: if (dev_zero == -1)
291: dev_zero = open("/dev/zero", O_RDONLY);
292: if (dev_zero == -1) {
1.34 anton 293: r = MAP_FAILED;
1.1 anton 294: if (debug)
295: fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ",
296: strerror(errno));
297: } else {
298: if (debug)
299: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size);
300: r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0);
301: }
302: #endif /* !defined(MAP_ANON) */
1.34 anton 303: after_alloc(r, size);
304: return r;
305: }
306: #endif
307:
308: Address my_alloc(Cell size)
309: {
310: #if HAVE_MMAP
311: Address r;
312:
313: r=alloc_mmap(size);
314: if (r!=MAP_FAILED)
1.1 anton 315: return r;
316: #endif /* HAVE_MMAP */
1.3 anton 317: /* use malloc as fallback */
318: return verbose_malloc(size);
1.1 anton 319: }
320:
1.34 anton 321: Address dict_alloc_read(FILE *file, Cell imagesize, Cell dictsize, Cell offset)
1.33 anton 322: {
1.34 anton 323: Address image = MAP_FAILED;
1.33 anton 324:
1.56 anton 325: #if defined(HAVE_MMAP)
1.33 anton 326: if (offset==0) {
1.34 anton 327: image=alloc_mmap(dictsize);
1.33 anton 328: if (debug)
1.34 anton 329: fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FIXED|MAP_FILE, imagefile, 0); ", (long)image, (long)imagesize);
330: image = mmap(image, imagesize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FIXED|MAP_FILE|MAP_PRIVATE, fileno(file), 0);
331: after_alloc(image,dictsize);
1.33 anton 332: }
1.56 anton 333: #endif /* defined(HAVE_MMAP) */
1.34 anton 334: if (image == MAP_FAILED) {
1.56 anton 335: image = my_alloc(dictsize+offset)+offset;
1.33 anton 336: rewind(file); /* fseek(imagefile,0L,SEEK_SET); */
1.34 anton 337: fread(image, 1, imagesize, file);
1.33 anton 338: }
339: return image;
340: }
341:
1.10 pazsan 342: void set_stack_sizes(ImageHeader * header)
343: {
344: if (dictsize==0)
345: dictsize = header->dict_size;
346: if (dsize==0)
347: dsize = header->data_stack_size;
348: if (rsize==0)
349: rsize = header->return_stack_size;
350: if (fsize==0)
351: fsize = header->fp_stack_size;
352: if (lsize==0)
353: lsize = header->locals_stack_size;
354: dictsize=maxaligned(dictsize);
355: dsize=maxaligned(dsize);
356: rsize=maxaligned(rsize);
357: lsize=maxaligned(lsize);
358: fsize=maxaligned(fsize);
359: }
360:
361: void alloc_stacks(ImageHeader * header)
362: {
363: header->dict_size=dictsize;
364: header->data_stack_size=dsize;
365: header->fp_stack_size=fsize;
366: header->return_stack_size=rsize;
367: header->locals_stack_size=lsize;
368:
369: header->data_stack_base=my_alloc(dsize);
370: header->fp_stack_base=my_alloc(fsize);
371: header->return_stack_base=my_alloc(rsize);
372: header->locals_stack_base=my_alloc(lsize);
1.65 anton 373: code_here = start_flush = code_area = my_alloc(dictsize);
1.10 pazsan 374: }
375:
1.44 pazsan 376: #warning You can ignore the warnings about clobbered variables in go_forth
1.11 pazsan 377: int go_forth(Address image, int stack, Cell *entries)
378: {
1.38 anton 379: volatile ImageHeader *image_header = (ImageHeader *)image;
1.18 anton 380: Cell *sp0=(Cell*)(image_header->data_stack_base + dsize);
1.44 pazsan 381: Cell *rp0=(Cell *)(image_header->return_stack_base + rsize);
1.18 anton 382: Float *fp0=(Float *)(image_header->fp_stack_base + fsize);
1.44 pazsan 383: #ifdef GFORTH_DEBUGGING
1.38 anton 384: volatile Cell *orig_rp0=rp0;
1.44 pazsan 385: #endif
1.18 anton 386: Address lp0=image_header->locals_stack_base + lsize;
387: Xt *ip0=(Xt *)(image_header->boot_entry);
1.13 pazsan 388: #ifdef SYSSIGNALS
1.11 pazsan 389: int throw_code;
1.13 pazsan 390: #endif
1.11 pazsan 391:
392: /* ensure that the cached elements (if any) are accessible */
1.41 anton 393: IF_spTOS(sp0--);
394: IF_fpTOS(fp0--);
1.11 pazsan 395:
396: for(;stack>0;stack--)
1.18 anton 397: *--sp0=entries[stack-1];
1.11 pazsan 398:
1.30 pazsan 399: #ifdef SYSSIGNALS
1.11 pazsan 400: get_winsize();
401:
402: install_signal_handlers(); /* right place? */
403:
404: if ((throw_code=setjmp(throw_jmp_buf))) {
405: static Cell signal_data_stack[8];
406: static Cell signal_return_stack[8];
407: static Float signal_fp_stack[1];
1.13 pazsan 408:
1.11 pazsan 409: signal_data_stack[7]=throw_code;
1.18 anton 410:
411: #ifdef GFORTH_DEBUGGING
1.38 anton 412: /* fprintf(stderr,"\nrp=%ld\n",(long)rp); */
413: if (rp <= orig_rp0 && rp > (Cell *)(image_header->return_stack_base+5)) {
1.18 anton 414: /* no rstack overflow or underflow */
415: rp0 = rp;
1.63 anton 416: *--rp0 = (Cell)saved_ip;
1.18 anton 417: }
418: else /* I love non-syntactic ifdefs :-) */
419: #endif
420: rp0 = signal_return_stack+8;
1.25 anton 421: /* fprintf(stderr, "rp=$%x\n",rp0);*/
1.11 pazsan 422:
1.33 anton 423: return((int)(Cell)engine(image_header->throw_entry, signal_data_stack+7,
1.18 anton 424: rp0, signal_fp_stack, 0));
1.11 pazsan 425: }
1.13 pazsan 426: #endif
1.11 pazsan 427:
1.33 anton 428: return((int)(Cell)engine(ip0,sp0,rp0,fp0,lp0));
1.11 pazsan 429: }
430:
1.21 anton 431:
1.30 pazsan 432: #ifndef INCLUDE_IMAGE
1.21 anton 433: void print_sizes(Cell sizebyte)
434: /* print size information */
435: {
436: static char* endianstring[]= { " big","little" };
437:
438: fprintf(stderr,"%s endian, cell=%d bytes, char=%d bytes, au=%d bytes\n",
439: endianstring[sizebyte & 1],
440: 1 << ((sizebyte >> 1) & 3),
441: 1 << ((sizebyte >> 3) & 3),
442: 1 << ((sizebyte >> 5) & 3));
443: }
444:
1.70 ! anton 445: #define MAX_IMMARGS 2
! 446:
1.69 anton 447: #ifndef NO_DYNAMIC
1.47 anton 448: typedef struct {
449: Label start;
450: Cell length; /* excluding the jump */
1.70 ! anton 451: char superend; /* true if primitive ends superinstruction, i.e.,
1.47 anton 452: unconditional branch, execute, etc. */
1.70 ! anton 453: Cell nimmargs;
! 454: struct immarg {
! 455: Cell offset; /* offset of immarg within prim */
! 456: char rel; /* true if immarg is relative */
! 457: } immargs[MAX_IMMARGS];
1.47 anton 458: } PrimInfo;
459:
460: PrimInfo *priminfos;
1.69 anton 461: #endif /* defined(NO_DYNAMIC) */
1.48 anton 462: Cell npriminfos=0;
1.47 anton 463:
464: void check_prims(Label symbols1[])
465: {
466: int i;
1.70 ! anton 467: Label *symbols2, *symbols3, *ends1;
1.49 anton 468: static char superend[]={
1.48 anton 469: #include "prim_superend.i"
470: };
1.47 anton 471:
1.66 anton 472: if (debug)
473: #ifdef __VERSION__
474: fprintf(stderr, "Compiled with gcc-" __VERSION__ "\n");
475: #else
476: #define xstr(s) str(s)
477: #define str(s) #s
478: fprintf(stderr, "Compiled with gcc-" xstr(__GNUC__) "." xstr(__GNUC_MINOR__) "\n");
479: #endif
1.47 anton 480: for (i=DOESJUMP+1; symbols1[i+1]!=0; i++)
481: ;
1.55 anton 482: npriminfos = i;
1.70 ! anton 483:
! 484: #ifndef NO_DYNAMIC
1.66 anton 485: if (no_dynamic)
486: return;
1.55 anton 487: symbols2=engine2(0,0,0,0,0);
1.70 ! anton 488: #if NO_IP
! 489: symbols3=engine3(0,0,0,0,0);
! 490: #else
! 491: symbols3=symbols1;
! 492: #endif
! 493: ends1 = symbols1+i+1-DOESJUMP;
1.47 anton 494: priminfos = calloc(i,sizeof(PrimInfo));
495: for (i=DOESJUMP+1; symbols1[i+1]!=0; i++) {
1.70 ! anton 496: int prim_len = ends1[i]-symbols1[i];
1.47 anton 497: PrimInfo *pi=&priminfos[i];
1.70 ! anton 498: int j=0;
! 499: char *s1 = (char *)symbols1[i];
! 500: char *s2 = (char *)symbols2[i];
! 501: char *s3 = (char *)symbols3[i];
! 502:
! 503: pi->start = s1;
! 504: pi->superend = superend[i-DOESJUMP-1]|no_super;
! 505: if (pi->superend)
! 506: pi->length = symbols1[i+1]-symbols1[i];
! 507: else
! 508: pi->length = prim_len;
! 509: pi->nimmargs = 0;
! 510: if (debug)
! 511: fprintf(stderr, "Prim %3d @ %p %p %p, length=%3d superend=%1d",
! 512: i, s1, s2, s3, prim_len, pi->superend);
! 513: assert(prim_len>=0);
! 514: while (j<prim_len) {
! 515: if (s1[j]==s3[j]) {
! 516: if (s1[j] != s2[j]) {
! 517: pi->start = NULL; /* not relocatable */
! 518: if (debug)
! 519: fprintf(stderr,"\n non_reloc: engine1!=engine2 offset %3d",j);
! 520: break;
! 521: }
! 522: j++;
! 523: } else {
! 524: struct immarg *ia=&pi->immargs[pi->nimmargs];
! 525:
! 526: pi->nimmargs++;
! 527: ia->offset=j;
! 528: if ((~*(Cell *)&(s1[j]))==*(Cell *)&(s3[j])) {
! 529: ia->rel=0;
! 530: if (debug)
! 531: fprintf(stderr,"\n absolute immarg: offset %3d",j);
! 532: } else if ((&(s1[j]))+(*(Cell *)&(s1[j]))+4 ==
! 533: symbols1[DOESJUMP+1]) {
! 534: ia->rel=1;
! 535: if (debug)
! 536: fprintf(stderr,"\n relative immarg: offset %3d",j);
! 537: } else {
! 538: pi->start = NULL; /* not relocatable */
! 539: if (debug)
! 540: fprintf(stderr,"\n non_reloc: engine1!=engine3 offset %3d",j);
! 541: break;
! 542: }
! 543: j+=4;
1.47 anton 544: }
545: }
1.70 ! anton 546: if (debug)
! 547: fprintf(stderr,"\n");
! 548: }
! 549: #endif
! 550: }
! 551:
! 552: #ifdef NO_IP
! 553: int nbranchinfos=0;
! 554:
! 555: struct branchinfo {
! 556: Label *targetptr; /* *(bi->targetptr) is the target */
! 557: Cell *addressptr; /* store the target here */
! 558: } branchinfos[100000];
! 559:
! 560: int ndoesexecinfos=0;
! 561: struct doesexecinfo {
! 562: int branchinfo; /* fix the targetptr of branchinfos[...->branchinfo] */
! 563: Cell *xt; /* cfa of word whose does-code needs calling */
! 564: } doesexecinfos[10000];
! 565:
! 566: #define N_EXECUTE 10
! 567: #define N_PERFORM 11
! 568: #define N_LIT_PERFORM 337
! 569: #define N_CALL 333
! 570: #define N_DOES_EXEC 339
! 571: #define N_LIT 9
! 572: #define N_CALL2 362
! 573: #define N_ABRANCH 341
! 574: #define N_SET_NEXT_CODE 361
! 575:
! 576: void set_rel_target(Cell *source, Label target)
! 577: {
! 578: *source = ((Cell)target)-(((Cell)source)+4);
! 579: }
! 580:
! 581: void register_branchinfo(Label source, Cell targetptr)
! 582: {
! 583: struct branchinfo *bi = &(branchinfos[nbranchinfos]);
! 584: bi->targetptr = (Label *)targetptr;
! 585: bi->addressptr = (Cell *)source;
! 586: nbranchinfos++;
! 587: }
! 588:
! 589: Cell *compile_prim1arg(Cell p)
! 590: {
! 591: int l = priminfos[p].length;
! 592: Address old_code_here=code_here;
! 593:
! 594: memcpy(code_here, vm_prims[p], l);
! 595: code_here+=l;
! 596: return (Cell*)(old_code_here+priminfos[p].immargs[0].offset);
! 597: }
! 598:
! 599: Cell *compile_call2(Cell targetptr)
! 600: {
! 601: Cell *next_code_target;
! 602: PrimInfo *pi = &priminfos[N_CALL2];
! 603:
! 604: memcpy(code_here, pi->start, pi->length);
! 605: next_code_target = (Cell *)(code_here + pi->immargs[0].offset);
! 606: register_branchinfo(code_here + pi->immargs[1].offset, targetptr);
! 607: code_here += pi->length;
! 608: return next_code_target;
! 609: }
! 610: #endif
! 611:
! 612: void finish_code(void)
! 613: {
! 614: #ifdef NO_IP
! 615: Cell i;
! 616:
! 617: compile_prim1(NULL);
! 618: for (i=0; i<ndoesexecinfos; i++) {
! 619: struct doesexecinfo *dei = &doesexecinfos[i];
! 620: branchinfos[dei->branchinfo].targetptr = DOES_CODE1((dei->xt));
! 621: }
! 622: ndoesexecinfos = 0;
! 623: for (i=0; i<nbranchinfos; i++) {
! 624: struct branchinfo *bi=&branchinfos[i];
! 625: set_rel_target(bi->addressptr, *(bi->targetptr));
! 626: }
! 627: nbranchinfos = 0;
! 628: FLUSH_ICACHE(start_flush, code_here-start_flush);
! 629: start_flush=code_here;
1.48 anton 630: #endif
631: }
632:
1.70 ! anton 633: void compile_prim1(Cell *start)
1.48 anton 634: {
1.61 anton 635: #if defined(DOUBLY_INDIRECT)
1.70 ! anton 636: Label prim=(Label)*start;
1.54 anton 637: if (prim<((Label)(xts+DOESJUMP)) || prim>((Label)(xts+npriminfos))) {
638: fprintf(stderr,"compile_prim encountered xt %p\n", prim);
1.70 ! anton 639: *start=(Cell)prim;
! 640: return;
! 641: } else {
! 642: *start = prim-((Label)xts)+((Label)vm_prims);
! 643: return;
! 644: }
! 645: #elif defined(NO_IP)
! 646: static Cell *last_start=NULL;
! 647: static Xt last_prim=NULL;
! 648: /* delay work by one call in order to get relocated immargs */
! 649:
! 650: if (last_start) {
! 651: unsigned i = last_prim-vm_prims;
! 652: PrimInfo *pi=&priminfos[i];
! 653: Cell *next_code_target=NULL;
! 654:
! 655: assert(i<npriminfos);
! 656: if (i==N_EXECUTE||i==N_PERFORM||i==N_LIT_PERFORM) {
! 657: next_code_target = compile_prim1arg(N_SET_NEXT_CODE);
! 658: }
! 659: if (i==N_CALL) {
! 660: next_code_target = compile_call2(last_start[1]);
! 661: } else if (i==N_DOES_EXEC) {
! 662: struct doesexecinfo *dei = &doesexecinfos[ndoesexecinfos++];
! 663: *compile_prim1arg(N_LIT) = (Cell)PFA(last_start[1]);
! 664: /* we cannot determine the callee now (last_start[1] may be a
! 665: forward reference), so just register an arbitrary target, and
! 666: register in dei that we need to fix this before resolving
! 667: branches */
! 668: dei->branchinfo = nbranchinfos;
! 669: dei->xt = (Cell *)(last_start[1]);
! 670: next_code_target = compile_call2(NULL);
! 671: } else if (pi->start == NULL) { /* non-reloc */
! 672: next_code_target = compile_prim1arg(N_SET_NEXT_CODE);
! 673: set_rel_target(compile_prim1arg(N_ABRANCH),*(Xt)last_prim);
! 674: } else {
! 675: unsigned j;
! 676:
! 677: memcpy(code_here, *last_prim, pi->length);
! 678: for (j=0; j<pi->nimmargs; j++) {
! 679: struct immarg *ia = &(pi->immargs[j]);
! 680: Cell argval = last_start[pi->nimmargs - j]; /* !! specific to prims */
! 681: if (ia->rel) { /* !! assumption: relative refs are branches */
! 682: register_branchinfo(code_here + ia->offset, argval);
! 683: } else /* plain argument */
! 684: *(Cell *)(code_here + ia->offset) = argval;
! 685: }
! 686: code_here += pi->length;
! 687: }
! 688: if (next_code_target!=NULL)
! 689: *next_code_target = (Cell)code_here;
! 690: }
! 691: if (start) {
! 692: last_prim = (Xt)*start;
! 693: *start = (Cell)code_here;
! 694: }
! 695: last_start = start;
! 696: return;
! 697: #elif !defined(NO_DYNAMIC)
! 698: Label prim=(Label)*start;
1.58 anton 699: unsigned i;
1.48 anton 700: Address old_code_here=code_here;
701: static Address last_jump=0;
702:
1.58 anton 703: i = ((Xt)prim)-vm_prims;
1.56 anton 704: prim = *(Xt)prim;
1.70 ! anton 705: if (no_dynamic) {
! 706: *start = (Cell)prim;
! 707: return;
! 708: }
1.58 anton 709: if (i>=npriminfos || priminfos[i].start == 0) { /* not a relocatable prim */
710: if (last_jump) { /* make sure the last sequence is complete */
711: memcpy(code_here, last_jump, IND_JUMP_LENGTH);
712: code_here += IND_JUMP_LENGTH;
713: last_jump = 0;
1.65 anton 714: FLUSH_ICACHE(start_flush, code_here-start_flush);
715: start_flush=code_here;
1.48 anton 716: }
1.70 ! anton 717: *start = (Cell)prim;
! 718: return;
1.47 anton 719: }
1.58 anton 720: assert(priminfos[i].start = prim);
1.50 anton 721: #ifdef ALIGN_CODE
722: ALIGN_CODE;
723: #endif
1.48 anton 724: memcpy(code_here, (Address)prim, priminfos[i].length);
725: code_here += priminfos[i].length;
1.70 ! anton 726: last_jump = (priminfos[i].superend) ? 0 : (prim+priminfos[i].length);
1.65 anton 727: if (last_jump == 0) {
728: FLUSH_ICACHE(start_flush, code_here-start_flush);
729: start_flush=code_here;
730: }
1.70 ! anton 731: *start = (Cell)old_code_here;
! 732: return;
1.61 anton 733: #else /* !defined(DOUBLY_INDIRECT), no code replication */
1.70 ! anton 734: Label prim=(Label)*start;
1.61 anton 735: #if !defined(INDIRECT_THREADED)
1.56 anton 736: prim = *(Xt)prim;
1.61 anton 737: #endif
1.70 ! anton 738: *start = (Cell)prim;
! 739: return;
1.54 anton 740: #endif /* !defined(DOUBLY_INDIRECT) */
1.70 ! anton 741: }
! 742:
! 743: Label compile_prim(Label prim)
! 744: {
! 745: Cell x=(Cell)prim;
! 746: compile_prim1(&x);
! 747: return (Label)x;
1.47 anton 748: }
749:
1.69 anton 750: #if defined(PRINT_SUPER_LENGTHS) && !defined(NO_DYNAMIC)
1.59 anton 751: Cell prim_length(Cell prim)
752: {
753: return priminfos[prim+DOESJUMP+1].length;
754: }
755: #endif
756:
1.1 anton 757: Address loader(FILE *imagefile, char* filename)
758: /* returns the address of the image proper (after the preamble) */
759: {
760: ImageHeader header;
761: Address image;
762: Address imp; /* image+preamble */
1.17 anton 763: Char magic[8];
764: char magic7; /* size byte of magic number */
1.1 anton 765: Cell preamblesize=0;
1.6 pazsan 766: Cell data_offset = offset_image ? 56*sizeof(Cell) : 0;
1.1 anton 767: UCell check_sum;
1.15 pazsan 768: Cell ausize = ((RELINFOBITS == 8) ? 0 :
769: (RELINFOBITS == 16) ? 1 :
770: (RELINFOBITS == 32) ? 2 : 3);
771: Cell charsize = ((sizeof(Char) == 1) ? 0 :
772: (sizeof(Char) == 2) ? 1 :
773: (sizeof(Char) == 4) ? 2 : 3) + ausize;
774: Cell cellsize = ((sizeof(Cell) == 1) ? 0 :
775: (sizeof(Cell) == 2) ? 1 :
776: (sizeof(Cell) == 4) ? 2 : 3) + ausize;
1.21 anton 777: Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) +
778: #ifdef WORDS_BIGENDIAN
779: 0
780: #else
781: 1
782: #endif
783: ;
1.1 anton 784:
1.43 anton 785: vm_prims = engine(0,0,0,0,0);
1.47 anton 786: check_prims(vm_prims);
1.1 anton 787: #ifndef DOUBLY_INDIRECT
1.59 anton 788: #ifdef PRINT_SUPER_LENGTHS
789: print_super_lengths();
790: #endif
1.43 anton 791: check_sum = checksum(vm_prims);
1.1 anton 792: #else /* defined(DOUBLY_INDIRECT) */
1.43 anton 793: check_sum = (UCell)vm_prims;
1.1 anton 794: #endif /* defined(DOUBLY_INDIRECT) */
1.10 pazsan 795:
796: do {
797: if(fread(magic,sizeof(Char),8,imagefile) < 8) {
1.15 pazsan 798: fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.4) image.\n",
1.10 pazsan 799: progname, filename);
800: exit(1);
1.1 anton 801: }
1.10 pazsan 802: preamblesize+=8;
1.15 pazsan 803: } while(memcmp(magic,"Gforth2",7));
1.17 anton 804: magic7 = magic[7];
1.1 anton 805: if (debug) {
1.17 anton 806: magic[7]='\0';
1.21 anton 807: fprintf(stderr,"Magic found: %s ", magic);
808: print_sizes(magic7);
1.1 anton 809: }
810:
1.21 anton 811: if (magic7 != sizebyte)
812: {
813: fprintf(stderr,"This image is: ");
814: print_sizes(magic7);
815: fprintf(stderr,"whereas the machine is ");
816: print_sizes(sizebyte);
1.1 anton 817: exit(-2);
818: };
819:
820: fread((void *)&header,sizeof(ImageHeader),1,imagefile);
1.10 pazsan 821:
822: set_stack_sizes(&header);
1.1 anton 823:
824: #if HAVE_GETPAGESIZE
825: pagesize=getpagesize(); /* Linux/GNU libc offers this */
826: #elif HAVE_SYSCONF && defined(_SC_PAGESIZE)
827: pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */
828: #elif PAGESIZE
829: pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */
830: #endif
831: if (debug)
1.5 jwilke 832: fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize);
1.1 anton 833:
1.34 anton 834: image = dict_alloc_read(imagefile, preamblesize+header.image_size,
835: preamblesize+dictsize, data_offset);
1.33 anton 836: imp=image+preamblesize;
1.57 anton 837: alloc_stacks((ImageHeader *)imp);
1.1 anton 838: if (clear_dictionary)
1.33 anton 839: memset(imp+header.image_size, 0, dictsize-header.image_size);
1.46 jwilke 840: if(header.base==0 || header.base == 0x100) {
1.1 anton 841: Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1;
842: char reloc_bits[reloc_size];
1.33 anton 843: fseek(imagefile, preamblesize+header.image_size, SEEK_SET);
1.10 pazsan 844: fread(reloc_bits, 1, reloc_size, imagefile);
1.45 jwilke 845: relocate((Cell *)imp, reloc_bits, header.image_size, header.base, vm_prims);
1.1 anton 846: #if 0
847: { /* let's see what the relocator did */
848: FILE *snapshot=fopen("snapshot.fi","wb");
849: fwrite(image,1,imagesize,snapshot);
850: fclose(snapshot);
851: }
852: #endif
1.46 jwilke 853: }
854: else if(header.base!=imp) {
855: fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n",
856: progname, (unsigned long)header.base, (unsigned long)imp);
857: exit(1);
1.1 anton 858: }
859: if (header.checksum==0)
860: ((ImageHeader *)imp)->checksum=check_sum;
861: else if (header.checksum != check_sum) {
862: fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n",
863: progname, (unsigned long)(header.checksum),(unsigned long)check_sum);
864: exit(1);
865: }
1.53 anton 866: #ifdef DOUBLY_INDIRECT
867: ((ImageHeader *)imp)->xt_base = xts;
868: #endif
1.1 anton 869: fclose(imagefile);
870:
1.56 anton 871: /* unnecessary, except maybe for CODE words */
872: /* FLUSH_ICACHE(imp, header.image_size);*/
1.1 anton 873:
874: return imp;
875: }
876:
1.28 anton 877: /* index of last '/' or '\' in file, 0 if there is none. !! Hmm, could
878: be implemented with strrchr and the separator should be
879: OS-dependent */
1.1 anton 880: int onlypath(char *file)
1.10 pazsan 881: {
882: int i;
1.1 anton 883: i=strlen(file);
1.10 pazsan 884: while (i) {
885: if (file[i]=='\\' || file[i]=='/') break;
886: i--;
887: }
888: return i;
1.1 anton 889: }
890:
891: FILE *openimage(char *fullfilename)
1.10 pazsan 892: {
893: FILE *image_file;
1.28 anton 894: char * expfilename = tilde_cstr(fullfilename, strlen(fullfilename), 1);
1.10 pazsan 895:
1.28 anton 896: image_file=fopen(expfilename,"rb");
1.1 anton 897: if (image_file!=NULL && debug)
1.28 anton 898: fprintf(stderr, "Opened image file: %s\n", expfilename);
1.10 pazsan 899: return image_file;
1.1 anton 900: }
901:
1.28 anton 902: /* try to open image file concat(path[0:len],imagename) */
1.1 anton 903: FILE *checkimage(char *path, int len, char *imagename)
1.10 pazsan 904: {
905: int dirlen=len;
1.1 anton 906: char fullfilename[dirlen+strlen(imagename)+2];
1.10 pazsan 907:
1.1 anton 908: memcpy(fullfilename, path, dirlen);
909: if (fullfilename[dirlen-1]!='/')
910: fullfilename[dirlen++]='/';
911: strcpy(fullfilename+dirlen,imagename);
1.10 pazsan 912: return openimage(fullfilename);
1.1 anton 913: }
914:
1.10 pazsan 915: FILE * open_image_file(char * imagename, char * path)
1.1 anton 916: {
1.10 pazsan 917: FILE * image_file=NULL;
1.28 anton 918: char *origpath=path;
1.10 pazsan 919:
920: if(strchr(imagename, '/')==NULL) {
921: /* first check the directory where the exe file is in !! 01may97jaw */
922: if (onlypath(progname))
923: image_file=checkimage(progname, onlypath(progname), imagename);
924: if (!image_file)
925: do {
926: char *pend=strchr(path, PATHSEP);
927: if (pend==NULL)
928: pend=path+strlen(path);
929: if (strlen(path)==0) break;
930: image_file=checkimage(path, pend-path, imagename);
931: path=pend+(*pend==PATHSEP);
932: } while (image_file==NULL);
933: } else {
934: image_file=openimage(imagename);
935: }
1.1 anton 936:
1.10 pazsan 937: if (!image_file) {
938: fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n",
1.28 anton 939: progname, imagename, origpath);
1.10 pazsan 940: exit(1);
1.7 anton 941: }
942:
1.10 pazsan 943: return image_file;
944: }
1.11 pazsan 945: #endif
946:
947: #ifdef HAS_OS
948: UCell convsize(char *s, UCell elemsize)
949: /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number
950: of bytes. the letter at the end indicates the unit, where e stands
951: for the element size. default is e */
952: {
953: char *endp;
954: UCell n,m;
955:
956: m = elemsize;
957: n = strtoul(s,&endp,0);
958: if (endp!=NULL) {
959: if (strcmp(endp,"b")==0)
960: m=1;
961: else if (strcmp(endp,"k")==0)
962: m=1024;
963: else if (strcmp(endp,"M")==0)
964: m=1024*1024;
965: else if (strcmp(endp,"G")==0)
966: m=1024*1024*1024;
967: else if (strcmp(endp,"T")==0) {
968: #if (SIZEOF_CHAR_P > 4)
1.24 anton 969: m=1024L*1024*1024*1024;
1.11 pazsan 970: #else
971: fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp);
972: exit(1);
973: #endif
974: } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) {
975: fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp);
976: exit(1);
977: }
978: }
979: return n*m;
980: }
1.10 pazsan 981:
982: void gforth_args(int argc, char ** argv, char ** path, char ** imagename)
983: {
984: int c;
985:
1.1 anton 986: opterr=0;
987: while (1) {
988: int option_index=0;
989: static struct option opts[] = {
1.29 anton 990: {"appl-image", required_argument, NULL, 'a'},
1.1 anton 991: {"image-file", required_argument, NULL, 'i'},
992: {"dictionary-size", required_argument, NULL, 'm'},
993: {"data-stack-size", required_argument, NULL, 'd'},
994: {"return-stack-size", required_argument, NULL, 'r'},
995: {"fp-stack-size", required_argument, NULL, 'f'},
996: {"locals-stack-size", required_argument, NULL, 'l'},
997: {"path", required_argument, NULL, 'p'},
998: {"version", no_argument, NULL, 'v'},
999: {"help", no_argument, NULL, 'h'},
1000: /* put something != 0 into offset_image */
1001: {"offset-image", no_argument, &offset_image, 1},
1002: {"no-offset-im", no_argument, &offset_image, 0},
1003: {"clear-dictionary", no_argument, &clear_dictionary, 1},
1.4 anton 1004: {"die-on-signal", no_argument, &die_on_signal, 1},
1.1 anton 1005: {"debug", no_argument, &debug, 1},
1.60 anton 1006: {"no-super", no_argument, &no_super, 1},
1007: {"no-dynamic", no_argument, &no_dynamic, 1},
1.66 anton 1008: {"dynamic", no_argument, &no_dynamic, 0},
1.1 anton 1009: {0,0,0,0}
1010: /* no-init-file, no-rc? */
1011: };
1012:
1.36 pazsan 1013: c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vhoncsx", opts, &option_index);
1.1 anton 1014:
1015: switch (c) {
1.29 anton 1016: case EOF: return;
1017: case '?': optind--; return;
1018: case 'a': *imagename = optarg; return;
1.10 pazsan 1019: case 'i': *imagename = optarg; break;
1.1 anton 1020: case 'm': dictsize = convsize(optarg,sizeof(Cell)); break;
1021: case 'd': dsize = convsize(optarg,sizeof(Cell)); break;
1022: case 'r': rsize = convsize(optarg,sizeof(Cell)); break;
1023: case 'f': fsize = convsize(optarg,sizeof(Float)); break;
1024: case 'l': lsize = convsize(optarg,sizeof(Cell)); break;
1.10 pazsan 1025: case 'p': *path = optarg; break;
1.36 pazsan 1026: case 'o': offset_image = 1; break;
1027: case 'n': offset_image = 0; break;
1028: case 'c': clear_dictionary = 1; break;
1029: case 's': die_on_signal = 1; break;
1030: case 'x': debug = 1; break;
1.8 anton 1031: case 'v': fprintf(stderr, "gforth %s\n", VERSION); exit(0);
1.1 anton 1032: case 'h':
1.29 anton 1033: fprintf(stderr, "Usage: %s [engine options] ['--'] [image arguments]\n\
1.1 anton 1034: Engine Options:\n\
1.29 anton 1035: --appl-image FILE equivalent to '--image-file=FILE --'\n\
1.10 pazsan 1036: --clear-dictionary Initialize the dictionary with 0 bytes\n\
1037: -d SIZE, --data-stack-size=SIZE Specify data stack size\n\
1038: --debug Print debugging information during startup\n\
1039: --die-on-signal exit instead of CATCHing some signals\n\
1.66 anton 1040: --dynamic use dynamic native code\n\
1.10 pazsan 1041: -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\
1042: -h, --help Print this message and exit\n\
1043: -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\
1044: -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\
1045: -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\
1.60 anton 1046: --no-dynamic Use only statically compiled primitives\n\
1.10 pazsan 1047: --no-offset-im Load image at normal position\n\
1.60 anton 1048: --no-super No dynamically formed superinstructions\n\
1.10 pazsan 1049: --offset-image Load image at a different position\n\
1050: -p PATH, --path=PATH Search path for finding image and sources\n\
1051: -r SIZE, --return-stack-size=SIZE Specify return stack size\n\
1.66 anton 1052: -v, --version Print engine version and exit\n\
1.1 anton 1053: SIZE arguments consist of an integer followed by a unit. The unit can be\n\
1.10 pazsan 1054: `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n",
1055: argv[0]);
1056: optind--;
1057: return;
1.1 anton 1058: }
1059: }
1.10 pazsan 1060: }
1.11 pazsan 1061: #endif
1.10 pazsan 1062:
1063: #ifdef INCLUDE_IMAGE
1064: extern Cell image[];
1065: extern const char reloc_bits[];
1066: #endif
1067:
1.67 pazsan 1068: DCell double2ll(Float r)
1069: {
1070: #ifndef BUGGY_LONG_LONG
1071: return (DCell)(r);
1072: #else
1073: DCell d;
1074: d.hi = ldexp(r,-(int)(CELL_BITS)) - (r<0);
1075: d.lo = r-ldexp((Float)d.hi,CELL_BITS);
1076: return d;
1077: #endif
1078: }
1079:
1.10 pazsan 1080: int main(int argc, char **argv, char **env)
1081: {
1.30 pazsan 1082: #ifdef HAS_OS
1.10 pazsan 1083: char *path = getenv("GFORTHPATH") ? : DEFAULTPATH;
1.30 pazsan 1084: #else
1085: char *path = DEFAULTPATH;
1086: #endif
1.13 pazsan 1087: #ifndef INCLUDE_IMAGE
1.10 pazsan 1088: char *imagename="gforth.fi";
1089: FILE *image_file;
1090: Address image;
1091: #endif
1092: int retvalue;
1093:
1.56 anton 1094: #if defined(i386) && defined(ALIGNMENT_CHECK)
1.10 pazsan 1095: /* turn on alignment checks on the 486.
1096: * on the 386 this should have no effect. */
1097: __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;");
1098: /* this is unusable with Linux' libc.4.6.27, because this library is
1099: not alignment-clean; we would have to replace some library
1100: functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep
1101: the stack FP-aligned. */
1102: #endif
1103:
1104: /* buffering of the user output device */
1.11 pazsan 1105: #ifdef _IONBF
1.10 pazsan 1106: if (isatty(fileno(stdout))) {
1107: fflush(stdout);
1108: setvbuf(stdout,NULL,_IONBF,0);
1.1 anton 1109: }
1.11 pazsan 1110: #endif
1.1 anton 1111:
1.10 pazsan 1112: progname = argv[0];
1113:
1.11 pazsan 1114: #ifdef HAS_OS
1.10 pazsan 1115: gforth_args(argc, argv, &path, &imagename);
1.11 pazsan 1116: #endif
1.10 pazsan 1117:
1118: #ifdef INCLUDE_IMAGE
1119: set_stack_sizes((ImageHeader *)image);
1.22 pazsan 1120: if(((ImageHeader *)image)->base != image)
1121: relocate(image, reloc_bits, ((ImageHeader *)image)->image_size,
1122: (Label*)engine(0, 0, 0, 0, 0));
1.10 pazsan 1123: alloc_stacks((ImageHeader *)image);
1124: #else
1125: image_file = open_image_file(imagename, path);
1126: image = loader(image_file, imagename);
1127: #endif
1.24 anton 1128: gforth_header=(ImageHeader *)image; /* used in SIGSEGV handler */
1.1 anton 1129:
1130: {
1.10 pazsan 1131: char path2[strlen(path)+1];
1.1 anton 1132: char *p1, *p2;
1133: Cell environ[]= {
1134: (Cell)argc-(optind-1),
1135: (Cell)(argv+(optind-1)),
1.10 pazsan 1136: (Cell)strlen(path),
1.1 anton 1137: (Cell)path2};
1138: argv[optind-1] = progname;
1139: /*
1140: for (i=0; i<environ[0]; i++)
1141: printf("%s\n", ((char **)(environ[1]))[i]);
1142: */
1143: /* make path OS-independent by replacing path separators with NUL */
1.10 pazsan 1144: for (p1=path, p2=path2; *p1!='\0'; p1++, p2++)
1.1 anton 1145: if (*p1==PATHSEP)
1146: *p2 = '\0';
1147: else
1148: *p2 = *p1;
1149: *p2='\0';
1.10 pazsan 1150: retvalue = go_forth(image, 4, environ);
1.42 anton 1151: #ifdef VM_PROFILING
1152: vm_print_profile(stderr);
1153: #endif
1.1 anton 1154: deprep_terminal();
1155: }
1.13 pazsan 1156: return retvalue;
1.1 anton 1157: }
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