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| 1 : | anton | 1.1 | /* 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> | ||
| 27 : | #include <string.h> | ||
| 28 : | #include <math.h> | ||
| 29 : | #include <sys/types.h> | ||
| 30 : | #include <sys/stat.h> | ||
| 31 : | #include <fcntl.h> | ||
| 32 : | #include <assert.h> | ||
| 33 : | #include <stdlib.h> | ||
| 34 : | #if HAVE_SYS_MMAN_H | ||
| 35 : | #include <sys/mman.h> | ||
| 36 : | #endif | ||
| 37 : | #include "forth.h" | ||
| 38 : | #include "io.h" | ||
| 39 : | #include "getopt.h" | ||
| 40 : | #include "version.h" | ||
| 41 : | |||
| 42 : | #define PRIM_VERSION 1 | ||
| 43 : | /* increment this whenever the primitives change in an incompatible way */ | ||
| 44 : | |||
| 45 : | #ifdef MSDOS | ||
| 46 : | jmp_buf throw_jmp_buf; | ||
| 47 : | # ifndef DEFAULTPATH | ||
| 48 : | # define DEFAULTPATH "." | ||
| 49 : | # endif | ||
| 50 : | #endif | ||
| 51 : | |||
| 52 : | #if defined(DIRECT_THREADED) | ||
| 53 : | # define CA(n) (symbols[(n)]) | ||
| 54 : | #else | ||
| 55 : | # define CA(n) ((Cell)(symbols+(n))) | ||
| 56 : | #endif | ||
| 57 : | |||
| 58 : | #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float)) | ||
| 59 : | |||
| 60 : | static UCell dictsize=0; | ||
| 61 : | static UCell dsize=0; | ||
| 62 : | static UCell rsize=0; | ||
| 63 : | static UCell fsize=0; | ||
| 64 : | static UCell lsize=0; | ||
| 65 : | int offset_image=0; | ||
| 66 : | static int clear_dictionary=0; | ||
| 67 : | static int debug=0; | ||
| 68 : | static size_t pagesize=0; | ||
| 69 : | char *progname; | ||
| 70 : | |||
| 71 : | /* image file format: | ||
| 72 : | * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.3.0 -i\n") | ||
| 73 : | * padding to a multiple of 8 | ||
| 74 : | * magic: "Gforth1x" means format 0.2, | ||
| 75 : | * where x is even for big endian and odd for little endian | ||
| 76 : | * and x & ~1 is the size of the cell in bytes. | ||
| 77 : | * padding to max alignment (no padding necessary on current machines) | ||
| 78 : | * ImageHeader structure (see below) | ||
| 79 : | * data (size in ImageHeader.image_size) | ||
| 80 : | * tags ((if relocatable, 1 bit/data cell) | ||
| 81 : | * | ||
| 82 : | * tag==1 means that the corresponding word is an address; | ||
| 83 : | * If the word is >=0, the address is within the image; | ||
| 84 : | * addresses within the image are given relative to the start of the image. | ||
| 85 : | * If the word =-1 (CF_NIL), the address is NIL, | ||
| 86 : | * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...) | ||
| 87 : | * If the word =CF(DODOES), it's a DOES> CFA | ||
| 88 : | * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>, | ||
| 89 : | * possibly containing a jump to dodoes) | ||
| 90 : | * If the word is <CF(DOESJUMP), it's a primitive | ||
| 91 : | */ | ||
| 92 : | |||
| 93 : | typedef struct { | ||
| 94 : | Address base; /* base address of image (0 if relocatable) */ | ||
| 95 : | UCell checksum; /* checksum of ca's to protect against some | ||
| 96 : | incompatible binary/executable combinations | ||
| 97 : | (0 if relocatable) */ | ||
| 98 : | UCell image_size; /* all sizes in bytes */ | ||
| 99 : | UCell dict_size; | ||
| 100 : | UCell data_stack_size; | ||
| 101 : | UCell fp_stack_size; | ||
| 102 : | UCell return_stack_size; | ||
| 103 : | UCell locals_stack_size; | ||
| 104 : | Xt *boot_entry; /* initial ip for booting (in BOOT) */ | ||
| 105 : | Xt *throw_entry; /* ip after signal (in THROW) */ | ||
| 106 : | Cell unused1; /* possibly tib stack size */ | ||
| 107 : | Cell unused2; | ||
| 108 : | Address data_stack_base; /* this and the following fields are initialized by the loader */ | ||
| 109 : | Address fp_stack_base; | ||
| 110 : | Address return_stack_base; | ||
| 111 : | Address locals_stack_base; | ||
| 112 : | } ImageHeader; | ||
| 113 : | /* the image-header is created in main.fs */ | ||
| 114 : | |||
| 115 : | void relocate(Cell *image, char *bitstring, int size, Label symbols[]) | ||
| 116 : | { | ||
| 117 : | int i=0, j, k, steps=(size/sizeof(Cell))/8; | ||
| 118 : | char bits; | ||
| 119 : | /* static char bits[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};*/ | ||
| 120 : | |||
| 121 : | /* printf("relocating %x[%x]\n", image, size); */ | ||
| 122 : | |||
| 123 : | for(k=0; k<=steps; k++) | ||
| 124 : | for(j=0, bits=bitstring[k]; j<8; j++, i++, bits<<=1) { | ||
| 125 : | /* fprintf(stderr,"relocate: image[%d]\n", i);*/ | ||
| 126 : | if(bits & 0x80) { | ||
| 127 : | /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/ | ||
| 128 : | if(image[i]<0) | ||
| 129 : | switch(image[i]) | ||
| 130 : | { | ||
| 131 : | case CF_NIL : image[i]=0; break; | ||
| 132 : | #if !defined(DOUBLY_INDIRECT) | ||
| 133 : | case CF(DOCOL) : | ||
| 134 : | case CF(DOVAR) : | ||
| 135 : | case CF(DOCON) : | ||
| 136 : | case CF(DOUSER) : | ||
| 137 : | case CF(DODEFER) : | ||
| 138 : | case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(image[i])]); break; | ||
| 139 : | case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break; | ||
| 140 : | #endif /* !defined(DOUBLY_INDIRECT) */ | ||
| 141 : | case CF(DODOES) : | ||
| 142 : | MAKE_DOES_CF(image+i,image[i+1]+((Cell)image)); | ||
| 143 : | break; | ||
| 144 : | default : | ||
| 145 : | /* printf("Code field generation image[%x]:=CA(%x)\n", | ||
| 146 : | i, CF(image[i])); */ | ||
| 147 : | image[i]=(Cell)CA(CF(image[i])); | ||
| 148 : | } | ||
| 149 : | else | ||
| 150 : | image[i]+=(Cell)image; | ||
| 151 : | } | ||
| 152 : | } | ||
| 153 : | } | ||
| 154 : | |||
| 155 : | UCell checksum(Label symbols[]) | ||
| 156 : | { | ||
| 157 : | UCell r=PRIM_VERSION; | ||
| 158 : | Cell i; | ||
| 159 : | |||
| 160 : | for (i=DOCOL; i<=DOESJUMP; i++) { | ||
| 161 : | r ^= (UCell)(symbols[i]); | ||
| 162 : | r = (r << 5) | (r >> (8*sizeof(Cell)-5)); | ||
| 163 : | } | ||
| 164 : | #ifdef DIRECT_THREADED | ||
| 165 : | /* we have to consider all the primitives */ | ||
| 166 : | for (; symbols[i]!=(Label)0; i++) { | ||
| 167 : | r ^= (UCell)(symbols[i]); | ||
| 168 : | r = (r << 5) | (r >> (8*sizeof(Cell)-5)); | ||
| 169 : | } | ||
| 170 : | #else | ||
| 171 : | /* in indirect threaded code all primitives are accessed through the | ||
| 172 : | symbols table, so we just have to put the base address of symbols | ||
| 173 : | in the checksum */ | ||
| 174 : | r ^= (UCell)symbols; | ||
| 175 : | #endif | ||
| 176 : | return r; | ||
| 177 : | } | ||
| 178 : | |||
| 179 : | Address my_alloc(Cell size) | ||
| 180 : | { | ||
| 181 : | static Address next_address=0; | ||
| 182 : | Address r; | ||
| 183 : | |||
| 184 : | /* the 256MB jump restriction on the MIPS architecture makes the | ||
| 185 : | combination of direct threading and mmap unsafe. */ | ||
| 186 : | #if HAVE_MMAP && (!defined(mips) || defined(INDIRECT_THREADED)) | ||
| 187 : | #if defined(MAP_ANON) | ||
| 188 : | if (debug) | ||
| 189 : | fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size); | ||
| 190 : | r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); | ||
| 191 : | #else /* !defined(MAP_ANON) */ | ||
| 192 : | /* Ultrix (at least does not define MAP_FILE and MAP_PRIVATE (both are | ||
| 193 : | apparently defaults*/ | ||
| 194 : | #ifndef MAP_FILE | ||
| 195 : | # define MAP_FILE 0 | ||
| 196 : | #endif | ||
| 197 : | #ifndef MAP_PRIVATE | ||
| 198 : | # define MAP_PRIVATE 0 | ||
| 199 : | #endif | ||
| 200 : | static int dev_zero=-1; | ||
| 201 : | |||
| 202 : | if (dev_zero == -1) | ||
| 203 : | dev_zero = open("/dev/zero", O_RDONLY); | ||
| 204 : | if (dev_zero == -1) { | ||
| 205 : | r = (Address)-1; | ||
| 206 : | if (debug) | ||
| 207 : | fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ", | ||
| 208 : | strerror(errno)); | ||
| 209 : | } else { | ||
| 210 : | if (debug) | ||
| 211 : | fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size); | ||
| 212 : | r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0); | ||
| 213 : | } | ||
| 214 : | #endif /* !defined(MAP_ANON) */ | ||
| 215 : | |||
| 216 : | if (r != (Address)-1) { | ||
| 217 : | if (debug) | ||
| 218 : | fprintf(stderr, "success, address=$%lx\n", (long) r); | ||
| 219 : | if (pagesize != 0) | ||
| 220 : | next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */ | ||
| 221 : | return r; | ||
| 222 : | } | ||
| 223 : | if (debug) | ||
| 224 : | fprintf(stderr, "failed: %s\n", strerror(errno)); | ||
| 225 : | #endif /* HAVE_MMAP */ | ||
| 226 : | /* use malloc as fallback, leave a little room (64B) for stack underflows */ | ||
| 227 : | if ((r = malloc(size+64))==NULL) { | ||
| 228 : | perror(progname); | ||
| 229 : | exit(1); | ||
| 230 : | } | ||
| 231 : | r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float))); | ||
| 232 : | if (debug) | ||
| 233 : | fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r); | ||
| 234 : | return r; | ||
| 235 : | } | ||
| 236 : | |||
| 237 : | Address loader(FILE *imagefile, char* filename) | ||
| 238 : | /* returns the address of the image proper (after the preamble) */ | ||
| 239 : | { | ||
| 240 : | ImageHeader header; | ||
| 241 : | Address image; | ||
| 242 : | Address imp; /* image+preamble */ | ||
| 243 : | Char magic[9]; | ||
| 244 : | Cell preamblesize=0; | ||
| 245 : | Label *symbols = engine(0,0,0,0,0); | ||
| 246 : | Cell data_offset = offset_image ? 28*sizeof(Cell) : 0; | ||
| 247 : | UCell check_sum; | ||
| 248 : | static char* endianstring[]= { "big","little" }; | ||
| 249 : | |||
| 250 : | #ifndef DOUBLY_INDIRECT | ||
| 251 : | check_sum = checksum(symbols); | ||
| 252 : | #else /* defined(DOUBLY_INDIRECT) */ | ||
| 253 : | check_sum = (UCell)symbols; | ||
| 254 : | #endif /* defined(DOUBLY_INDIRECT) */ | ||
| 255 : | |||
| 256 : | do | ||
| 257 : | { | ||
| 258 : | if(fread(magic,sizeof(Char),8,imagefile) < 8) { | ||
| 259 : | fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.2) image.\n", | ||
| 260 : | progname, filename); | ||
| 261 : | exit(1); | ||
| 262 : | } | ||
| 263 : | preamblesize+=8; | ||
| 264 : | } | ||
| 265 : | while(memcmp(magic,"Gforth1",7)); | ||
| 266 : | if (debug) { | ||
| 267 : | magic[8]='\0'; | ||
| 268 : | fprintf(stderr,"Magic found: %s\n", magic); | ||
| 269 : | } | ||
| 270 : | |||
| 271 : | if(magic[7] != sizeof(Cell) + | ||
| 272 : | #ifdef WORDS_BIGENDIAN | ||
| 273 : | '0' | ||
| 274 : | #else | ||
| 275 : | '1' | ||
| 276 : | #endif | ||
| 277 : | ) | ||
| 278 : | { fprintf(stderr,"This image is %d bit %s-endian, whereas the machine is %d bit %s-endian.\n", | ||
| 279 : | ((magic[7]-'0')&~1)*8, endianstring[magic[7]&1], | ||
| 280 : | sizeof(Cell)*8, endianstring[ | ||
| 281 : | #ifdef WORDS_BIGENDIAN | ||
| 282 : | 0 | ||
| 283 : | #else | ||
| 284 : | 1 | ||
| 285 : | #endif | ||
| 286 : | ]); | ||
| 287 : | exit(-2); | ||
| 288 : | }; | ||
| 289 : | |||
| 290 : | fread((void *)&header,sizeof(ImageHeader),1,imagefile); | ||
| 291 : | if (dictsize==0) | ||
| 292 : | dictsize = header.dict_size; | ||
| 293 : | if (dsize==0) | ||
| 294 : | dsize=header.data_stack_size; | ||
| 295 : | if (rsize==0) | ||
| 296 : | rsize=header.return_stack_size; | ||
| 297 : | if (fsize==0) | ||
| 298 : | fsize=header.fp_stack_size; | ||
| 299 : | if (lsize==0) | ||
| 300 : | lsize=header.locals_stack_size; | ||
| 301 : | dictsize=maxaligned(dictsize); | ||
| 302 : | dsize=maxaligned(dsize); | ||
| 303 : | rsize=maxaligned(rsize); | ||
| 304 : | lsize=maxaligned(lsize); | ||
| 305 : | fsize=maxaligned(fsize); | ||
| 306 : | |||
| 307 : | #if HAVE_GETPAGESIZE | ||
| 308 : | pagesize=getpagesize(); /* Linux/GNU libc offers this */ | ||
| 309 : | #elif HAVE_SYSCONF && defined(_SC_PAGESIZE) | ||
| 310 : | pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */ | ||
| 311 : | #elif PAGESIZE | ||
| 312 : | pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */ | ||
| 313 : | #endif | ||
| 314 : | if (debug) | ||
| 315 : | fprintf(stderr,"pagesize=%d\n",pagesize); | ||
| 316 : | |||
| 317 : | image = my_alloc(preamblesize+dictsize+data_offset)+data_offset; | ||
| 318 : | rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */ | ||
| 319 : | if (clear_dictionary) | ||
| 320 : | memset(image,0,dictsize); | ||
| 321 : | fread(image,1,preamblesize+header.image_size,imagefile); | ||
| 322 : | imp=image+preamblesize; | ||
| 323 : | if(header.base==0) { | ||
| 324 : | Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1; | ||
| 325 : | char reloc_bits[reloc_size]; | ||
| 326 : | fread(reloc_bits,1,reloc_size,imagefile); | ||
| 327 : | relocate((Cell *)imp,reloc_bits,header.image_size,symbols); | ||
| 328 : | #if 0 | ||
| 329 : | { /* let's see what the relocator did */ | ||
| 330 : | FILE *snapshot=fopen("snapshot.fi","wb"); | ||
| 331 : | fwrite(image,1,imagesize,snapshot); | ||
| 332 : | fclose(snapshot); | ||
| 333 : | } | ||
| 334 : | #endif | ||
| 335 : | } | ||
| 336 : | else if(header.base!=imp) { | ||
| 337 : | fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n", | ||
| 338 : | progname, (unsigned long)header.base, (unsigned long)imp); | ||
| 339 : | exit(1); | ||
| 340 : | } | ||
| 341 : | if (header.checksum==0) | ||
| 342 : | ((ImageHeader *)imp)->checksum=check_sum; | ||
| 343 : | else if (header.checksum != check_sum) { | ||
| 344 : | fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n", | ||
| 345 : | progname, (unsigned long)(header.checksum),(unsigned long)check_sum); | ||
| 346 : | exit(1); | ||
| 347 : | } | ||
| 348 : | fclose(imagefile); | ||
| 349 : | |||
| 350 : | ((ImageHeader *)imp)->dict_size=dictsize; | ||
| 351 : | ((ImageHeader *)imp)->data_stack_size=dsize; | ||
| 352 : | ((ImageHeader *)imp)->fp_stack_size=fsize; | ||
| 353 : | ((ImageHeader *)imp)->return_stack_size=rsize; | ||
| 354 : | ((ImageHeader *)imp)->locals_stack_size=lsize; | ||
| 355 : | |||
| 356 : | ((ImageHeader *)imp)->data_stack_base=my_alloc(dsize); | ||
| 357 : | ((ImageHeader *)imp)->fp_stack_base=my_alloc(fsize); | ||
| 358 : | ((ImageHeader *)imp)->return_stack_base=my_alloc(rsize); | ||
| 359 : | ((ImageHeader *)imp)->locals_stack_base=my_alloc(lsize); | ||
| 360 : | |||
| 361 : | CACHE_FLUSH(imp, header.image_size); | ||
| 362 : | |||
| 363 : | return imp; | ||
| 364 : | } | ||
| 365 : | |||
| 366 : | int go_forth(Address image, int stack, Cell *entries) | ||
| 367 : | { | ||
| 368 : | Cell *sp=(Cell*)(((ImageHeader *)image)->data_stack_base + dsize); | ||
| 369 : | Float *fp=(Float *)(((ImageHeader *)image)->fp_stack_base + fsize); | ||
| 370 : | Cell *rp=(Cell *)(((ImageHeader *)image)->return_stack_base + rsize); | ||
| 371 : | Address lp=((ImageHeader *)image)->locals_stack_base + lsize; | ||
| 372 : | Xt *ip=(Xt *)(((ImageHeader *)image)->boot_entry); | ||
| 373 : | int throw_code; | ||
| 374 : | |||
| 375 : | /* ensure that the cached elements (if any) are accessible */ | ||
| 376 : | IF_TOS(sp--); | ||
| 377 : | IF_FTOS(fp--); | ||
| 378 : | |||
| 379 : | for(;stack>0;stack--) | ||
| 380 : | *--sp=entries[stack-1]; | ||
| 381 : | |||
| 382 : | #if !defined(MSDOS) && !defined(_WIN32) && !defined(__EMX__) | ||
| 383 : | get_winsize(); | ||
| 384 : | #endif | ||
| 385 : | |||
| 386 : | install_signal_handlers(); /* right place? */ | ||
| 387 : | |||
| 388 : | if ((throw_code=setjmp(throw_jmp_buf))) { | ||
| 389 : | static Cell signal_data_stack[8]; | ||
| 390 : | static Cell signal_return_stack[8]; | ||
| 391 : | static Float signal_fp_stack[1]; | ||
| 392 : | |||
| 393 : | signal_data_stack[7]=throw_code; | ||
| 394 : | |||
| 395 : | return((int)engine(((ImageHeader *)image)->throw_entry,signal_data_stack+7, | ||
| 396 : | signal_return_stack+8,signal_fp_stack,0)); | ||
| 397 : | } | ||
| 398 : | |||
| 399 : | return((int)engine(ip,sp,rp,fp,lp)); | ||
| 400 : | } | ||
| 401 : | |||
| 402 : | UCell convsize(char *s, UCell elemsize) | ||
| 403 : | /* converts s of the format [0-9]+[bekM]? (e.g. 25k) into the number | ||
| 404 : | of bytes. the letter at the end indicates the unit, where e stands | ||
| 405 : | for the element size. default is e */ | ||
| 406 : | { | ||
| 407 : | char *endp; | ||
| 408 : | UCell n,m; | ||
| 409 : | |||
| 410 : | m = elemsize; | ||
| 411 : | n = strtoul(s,&endp,0); | ||
| 412 : | if (endp!=NULL) { | ||
| 413 : | if (strcmp(endp,"b")==0) | ||
| 414 : | m=1; | ||
| 415 : | else if (strcmp(endp,"k")==0) | ||
| 416 : | m=1024; | ||
| 417 : | else if (strcmp(endp,"M")==0) | ||
| 418 : | m=1024*1024; | ||
| 419 : | else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) { | ||
| 420 : | fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp); | ||
| 421 : | exit(1); | ||
| 422 : | } | ||
| 423 : | } | ||
| 424 : | return n*m; | ||
| 425 : | } | ||
| 426 : | |||
| 427 : | int onlypath(char *file) | ||
| 428 : | { int i; | ||
| 429 : | i=strlen(file); | ||
| 430 : | while (i) { if (file[i]=='\\' || file[i]=='/') break; | ||
| 431 : | i--; } | ||
| 432 : | return (i); | ||
| 433 : | } | ||
| 434 : | |||
| 435 : | FILE *openimage(char *fullfilename) | ||
| 436 : | { FILE *image_file; | ||
| 437 : | image_file=fopen(fullfilename,"rb"); | ||
| 438 : | if (image_file!=NULL && debug) | ||
| 439 : | fprintf(stderr, "Opened image file: %s\n", fullfilename); | ||
| 440 : | return (image_file); | ||
| 441 : | } | ||
| 442 : | |||
| 443 : | FILE *checkimage(char *path, int len, char *imagename) | ||
| 444 : | { int dirlen=len; | ||
| 445 : | char fullfilename[dirlen+strlen(imagename)+2]; | ||
| 446 : | memcpy(fullfilename, path, dirlen); | ||
| 447 : | if (fullfilename[dirlen-1]!='/') | ||
| 448 : | fullfilename[dirlen++]='/'; | ||
| 449 : | strcpy(fullfilename+dirlen,imagename); | ||
| 450 : | return (openimage(fullfilename)); | ||
| 451 : | } | ||
| 452 : | |||
| 453 : | int main(int argc, char **argv, char **env) | ||
| 454 : | { | ||
| 455 : | char *path, *path1; | ||
| 456 : | char *imagename="gforth.fi"; | ||
| 457 : | FILE *image_file; | ||
| 458 : | int c, retvalue; | ||
| 459 : | |||
| 460 : | #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED) | ||
| 461 : | /* turn on alignment checks on the 486. | ||
| 462 : | * on the 386 this should have no effect. */ | ||
| 463 : | __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;"); | ||
| 464 : | /* this is unusable with Linux' libc.4.6.27, because this library is | ||
| 465 : | not alignment-clean; we would have to replace some library | ||
| 466 : | functions (e.g., memcpy) to make it work */ | ||
| 467 : | #endif | ||
| 468 : | |||
| 469 : | progname = argv[0]; | ||
| 470 : | if ((path1=getenv("GFORTHPATH"))==NULL) | ||
| 471 : | path1 = DEFAULTPATH; | ||
| 472 : | |||
| 473 : | opterr=0; | ||
| 474 : | while (1) { | ||
| 475 : | int option_index=0; | ||
| 476 : | static struct option opts[] = { | ||
| 477 : | {"image-file", required_argument, NULL, 'i'}, | ||
| 478 : | {"dictionary-size", required_argument, NULL, 'm'}, | ||
| 479 : | {"data-stack-size", required_argument, NULL, 'd'}, | ||
| 480 : | {"return-stack-size", required_argument, NULL, 'r'}, | ||
| 481 : | {"fp-stack-size", required_argument, NULL, 'f'}, | ||
| 482 : | {"locals-stack-size", required_argument, NULL, 'l'}, | ||
| 483 : | {"path", required_argument, NULL, 'p'}, | ||
| 484 : | {"version", no_argument, NULL, 'v'}, | ||
| 485 : | {"help", no_argument, NULL, 'h'}, | ||
| 486 : | /* put something != 0 into offset_image */ | ||
| 487 : | {"offset-image", no_argument, &offset_image, 1}, | ||
| 488 : | {"no-offset-im", no_argument, &offset_image, 0}, | ||
| 489 : | {"clear-dictionary", no_argument, &clear_dictionary, 1}, | ||
| 490 : | {"debug", no_argument, &debug, 1}, | ||
| 491 : | {0,0,0,0} | ||
| 492 : | /* no-init-file, no-rc? */ | ||
| 493 : | }; | ||
| 494 : | |||
| 495 : | c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index); | ||
| 496 : | |||
| 497 : | if (c==EOF) | ||
| 498 : | break; | ||
| 499 : | if (c=='?') { | ||
| 500 : | optind--; | ||
| 501 : | break; | ||
| 502 : | } | ||
| 503 : | switch (c) { | ||
| 504 : | case 'i': imagename = optarg; break; | ||
| 505 : | case 'm': dictsize = convsize(optarg,sizeof(Cell)); break; | ||
| 506 : | case 'd': dsize = convsize(optarg,sizeof(Cell)); break; | ||
| 507 : | case 'r': rsize = convsize(optarg,sizeof(Cell)); break; | ||
| 508 : | case 'f': fsize = convsize(optarg,sizeof(Float)); break; | ||
| 509 : | case 'l': lsize = convsize(optarg,sizeof(Cell)); break; | ||
| 510 : | case 'p': path1 = optarg; break; | ||
| 511 : | case 'v': fprintf(stderr, "gforth %s\n", gforth_version); exit(0); | ||
| 512 : | case 'h': | ||
| 513 : | fprintf(stderr, "Usage: %s [engine options] [image arguments]\n\ | ||
| 514 : | Engine Options:\n\ | ||
| 515 : | -c, --clear-dictionary Initialize the dictionary with 0 bytes\n\ | ||
| 516 : | -d SIZE, --data-stack-size=SIZE Specify data stack size\n\ | ||
| 517 : | --debug Print debugging information during startup\n\ | ||
| 518 : | -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\ | ||
| 519 : | -h, --help Print this message and exit\n\ | ||
| 520 : | -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\ | ||
| 521 : | -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\ | ||
| 522 : | -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\ | ||
| 523 : | --offset-image Load image at a different position\n\ | ||
| 524 : | -p PATH, --path=PATH Search path for finding image and sources\n\ | ||
| 525 : | -r SIZE, --return-stack-size=SIZE Specify return stack size\n\ | ||
| 526 : | -v, --version Print version and exit\n\ | ||
| 527 : | SIZE arguments consist of an integer followed by a unit. The unit can be\n\ | ||
| 528 : | `b' (bytes), `e' (elements), `k' (kilobytes), or `M' (Megabytes).\n\ | ||
| 529 : | \n\ | ||
| 530 : | Arguments of default image `gforth.fi':\n\ | ||
| 531 : | FILE load FILE (with `require')\n\ | ||
| 532 : | -e STRING, --evaluate STRING interpret STRING (with `EVALUATE')\n", | ||
| 533 : | argv[0]); exit(0); | ||
| 534 : | } | ||
| 535 : | } | ||
| 536 : | path=path1; | ||
| 537 : | image_file=NULL; | ||
| 538 : | |||
| 539 : | if(strchr(imagename, '/')==NULL) | ||
| 540 : | { | ||
| 541 : | /* first check the directory where the exe file is in !! 01may97jaw */ | ||
| 542 : | if (onlypath(progname)) | ||
| 543 : | image_file=checkimage(progname, onlypath(progname), imagename); | ||
| 544 : | if (!image_file) | ||
| 545 : | do { | ||
| 546 : | char *pend=strchr(path, PATHSEP); | ||
| 547 : | if (pend==NULL) | ||
| 548 : | pend=path+strlen(path); | ||
| 549 : | if (strlen(path)==0) break; | ||
| 550 : | image_file=checkimage(path, pend-path, imagename); | ||
| 551 : | path=pend+(*pend==PATHSEP); | ||
| 552 : | } while (image_file==NULL); | ||
| 553 : | } | ||
| 554 : | else | ||
| 555 : | { image_file=openimage(imagename); | ||
| 556 : | } | ||
| 557 : | |||
| 558 : | if (!image_file) | ||
| 559 : | { fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n", | ||
| 560 : | progname, imagename, path1); | ||
| 561 : | exit(1); | ||
| 562 : | } | ||
| 563 : | |||
| 564 : | { | ||
| 565 : | char path2[strlen(path1)+1]; | ||
| 566 : | char *p1, *p2; | ||
| 567 : | Cell environ[]= { | ||
| 568 : | (Cell)argc-(optind-1), | ||
| 569 : | (Cell)(argv+(optind-1)), | ||
| 570 : | (Cell)strlen(path1), | ||
| 571 : | (Cell)path2}; | ||
| 572 : | argv[optind-1] = progname; | ||
| 573 : | /* | ||
| 574 : | for (i=0; i<environ[0]; i++) | ||
| 575 : | printf("%s\n", ((char **)(environ[1]))[i]); | ||
| 576 : | */ | ||
| 577 : | /* make path OS-independent by replacing path separators with NUL */ | ||
| 578 : | for (p1=path1, p2=path2; *p1!='\0'; p1++, p2++) | ||
| 579 : | if (*p1==PATHSEP) | ||
| 580 : | *p2 = '\0'; | ||
| 581 : | else | ||
| 582 : | *p2 = *p1; | ||
| 583 : | *p2='\0'; | ||
| 584 : | retvalue=go_forth(loader(image_file, imagename),4,environ); | ||
| 585 : | deprep_terminal(); | ||
| 586 : | exit(retvalue); | ||
| 587 : | } | ||
| 588 : | } |
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