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| 1 : | anton | 1.1 | /* command line interpretation, image loading etc. for Gforth |
| 2 : | |||
| 3 : | |||
| 4 : | anton | 1.39 | Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. |
| 5 : | anton | 1.1 | |
| 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 : | anton | 1.40 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| 21 : | anton | 1.1 | */ |
| 22 : | |||
| 23 : | #include "config.h" | ||
| 24 : | #include <errno.h> | ||
| 25 : | #include <ctype.h> | ||
| 26 : | #include <stdio.h> | ||
| 27 : | pazsan | 1.2 | #include <unistd.h> |
| 28 : | anton | 1.1 | #include <string.h> |
| 29 : | #include <math.h> | ||
| 30 : | #include <sys/types.h> | ||
| 31 : | pazsan | 1.32 | #ifndef STANDALONE |
| 32 : | anton | 1.1 | #include <sys/stat.h> |
| 33 : | pazsan | 1.32 | #endif |
| 34 : | anton | 1.1 | #include <fcntl.h> |
| 35 : | #include <assert.h> | ||
| 36 : | #include <stdlib.h> | ||
| 37 : | pazsan | 1.11 | #ifndef STANDALONE |
| 38 : | anton | 1.1 | #if HAVE_SYS_MMAN_H |
| 39 : | #include <sys/mman.h> | ||
| 40 : | #endif | ||
| 41 : | pazsan | 1.11 | #endif |
| 42 : | anton | 1.1 | #include "forth.h" |
| 43 : | #include "io.h" | ||
| 44 : | #include "getopt.h" | ||
| 45 : | pazsan | 1.11 | #ifdef STANDALONE |
| 46 : | #include <systypes.h> | ||
| 47 : | #endif | ||
| 48 : | anton | 1.1 | |
| 49 : | #define PRIM_VERSION 1 | ||
| 50 : | /* increment this whenever the primitives change in an incompatible way */ | ||
| 51 : | |||
| 52 : | pazsan | 1.14 | #ifndef DEFAULTPATH |
| 53 : | anton | 1.39 | # define DEFAULTPATH "." |
| 54 : | pazsan | 1.14 | #endif |
| 55 : | |||
| 56 : | anton | 1.1 | #ifdef MSDOS |
| 57 : | jmp_buf throw_jmp_buf; | ||
| 58 : | #endif | ||
| 59 : | |||
| 60 : | #if defined(DIRECT_THREADED) | ||
| 61 : | # define CA(n) (symbols[(n)]) | ||
| 62 : | #else | ||
| 63 : | # define CA(n) ((Cell)(symbols+(n))) | ||
| 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; | ||
| 74 : | anton | 1.4 | int die_on_signal=0; |
| 75 : | pazsan | 1.13 | #ifndef INCLUDE_IMAGE |
| 76 : | anton | 1.1 | static int clear_dictionary=0; |
| 77 : | anton | 1.24 | UCell pagesize=1; |
| 78 : | pazsan | 1.22 | char *progname; |
| 79 : | #else | ||
| 80 : | char *progname = "gforth"; | ||
| 81 : | int optind = 1; | ||
| 82 : | pazsan | 1.13 | #endif |
| 83 : | pazsan | 1.31 | |
| 84 : | pazsan | 1.30 | #ifdef HAS_DEBUG |
| 85 : | anton | 1.1 | static int debug=0; |
| 86 : | pazsan | 1.31 | #else |
| 87 : | # define debug 0 | ||
| 88 : | # define perror(x...) | ||
| 89 : | # define fprintf(x...) | ||
| 90 : | pazsan | 1.30 | #endif |
| 91 : | pazsan | 1.31 | |
| 92 : | anton | 1.24 | ImageHeader *gforth_header; |
| 93 : | anton | 1.43 | Label *vm_prims; |
| 94 : | anton | 1.1 | |
| 95 : | pazsan | 1.30 | #ifdef MEMCMP_AS_SUBROUTINE |
| 96 : | int gforth_memcmp(const char * s1, const char * s2, size_t n) | ||
| 97 : | { | ||
| 98 : | return memcmp(s1, s2, n); | ||
| 99 : | } | ||
| 100 : | #endif | ||
| 101 : | |||
| 102 : | anton | 1.1 | /* image file format: |
| 103 : | pazsan | 1.15 | * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n") |
| 104 : | anton | 1.1 | * padding to a multiple of 8 |
| 105 : | pazsan | 1.15 | * magic: "Gforth2x" means format 0.4, |
| 106 : | * where x is a byte with | ||
| 107 : | * bit 7: reserved = 0 | ||
| 108 : | * bit 6:5: address unit size 2^n octets | ||
| 109 : | * bit 4:3: character size 2^n octets | ||
| 110 : | * bit 2:1: cell size 2^n octets | ||
| 111 : | * bit 0: endian, big=0, little=1. | ||
| 112 : | * The magic are always 8 octets, no matter what the native AU/character size is | ||
| 113 : | anton | 1.1 | * padding to max alignment (no padding necessary on current machines) |
| 114 : | anton | 1.24 | * ImageHeader structure (see forth.h) |
| 115 : | anton | 1.1 | * data (size in ImageHeader.image_size) |
| 116 : | * tags ((if relocatable, 1 bit/data cell) | ||
| 117 : | * | ||
| 118 : | * tag==1 means that the corresponding word is an address; | ||
| 119 : | * If the word is >=0, the address is within the image; | ||
| 120 : | * addresses within the image are given relative to the start of the image. | ||
| 121 : | * If the word =-1 (CF_NIL), the address is NIL, | ||
| 122 : | * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...) | ||
| 123 : | * If the word =CF(DODOES), it's a DOES> CFA | ||
| 124 : | * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>, | ||
| 125 : | * possibly containing a jump to dodoes) | ||
| 126 : | * If the word is <CF(DOESJUMP), it's a primitive | ||
| 127 : | */ | ||
| 128 : | |||
| 129 : | pazsan | 1.10 | void relocate(Cell *image, const char *bitstring, int size, Label symbols[]) |
| 130 : | anton | 1.1 | { |
| 131 : | pazsan | 1.16 | int i=0, j, k, steps=(size/sizeof(Cell))/RELINFOBITS; |
| 132 : | pazsan | 1.11 | Cell token; |
| 133 : | anton | 1.1 | char bits; |
| 134 : | anton | 1.37 | Cell max_symbols; |
| 135 : | anton | 1.1 | |
| 136 : | /* printf("relocating %x[%x]\n", image, size); */ | ||
| 137 : | anton | 1.37 | |
| 138 : | for (max_symbols=DOESJUMP+1; symbols[max_symbols]!=0; max_symbols++) | ||
| 139 : | ; | ||
| 140 : | pazsan | 1.35 | size/=sizeof(Cell); |
| 141 : | |||
| 142 : | pazsan | 1.31 | for(k=0; k<=steps; k++) { |
| 143 : | pazsan | 1.13 | for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) { |
| 144 : | anton | 1.1 | /* fprintf(stderr,"relocate: image[%d]\n", i);*/ |
| 145 : | pazsan | 1.35 | if((i < size) && (bits & (1U << (RELINFOBITS-1)))) { |
| 146 : | /* fprintf(stderr,"relocate: image[%d]=%d of %d\n", i, image[i], size/sizeof(Cell)); */ | ||
| 147 : | pazsan | 1.11 | if((token=image[i])<0) |
| 148 : | switch(token) | ||
| 149 : | anton | 1.1 | { |
| 150 : | case CF_NIL : image[i]=0; break; | ||
| 151 : | #if !defined(DOUBLY_INDIRECT) | ||
| 152 : | case CF(DOCOL) : | ||
| 153 : | case CF(DOVAR) : | ||
| 154 : | case CF(DOCON) : | ||
| 155 : | case CF(DOUSER) : | ||
| 156 : | case CF(DODEFER) : | ||
| 157 : | pazsan | 1.11 | case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break; |
| 158 : | anton | 1.1 | case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break; |
| 159 : | #endif /* !defined(DOUBLY_INDIRECT) */ | ||
| 160 : | case CF(DODOES) : | ||
| 161 : | anton | 1.33 | MAKE_DOES_CF(image+i,(Xt *)(image[i+1]+((Cell)image))); |
| 162 : | anton | 1.1 | break; |
| 163 : | default : | ||
| 164 : | /* printf("Code field generation image[%x]:=CA(%x)\n", | ||
| 165 : | i, CF(image[i])); */ | ||
| 166 : | anton | 1.37 | if (CF(token)<max_symbols) |
| 167 : | image[i]=(Cell)CA(CF(token)); | ||
| 168 : | else | ||
| 169 : | fprintf(stderr,"Primitive %d used in this image at $%lx is not implemented by this\n engine (%s); executing this code will crash.\n",CF(token),(long)&image[i],VERSION); | ||
| 170 : | anton | 1.1 | } |
| 171 : | else | ||
| 172 : | image[i]+=(Cell)image; | ||
| 173 : | } | ||
| 174 : | } | ||
| 175 : | pazsan | 1.31 | } |
| 176 : | jwilke | 1.26 | ((ImageHeader*)(image))->base = (Address) image; |
| 177 : | anton | 1.1 | } |
| 178 : | |||
| 179 : | UCell checksum(Label symbols[]) | ||
| 180 : | { | ||
| 181 : | UCell r=PRIM_VERSION; | ||
| 182 : | Cell i; | ||
| 183 : | |||
| 184 : | for (i=DOCOL; i<=DOESJUMP; i++) { | ||
| 185 : | r ^= (UCell)(symbols[i]); | ||
| 186 : | r = (r << 5) | (r >> (8*sizeof(Cell)-5)); | ||
| 187 : | } | ||
| 188 : | #ifdef DIRECT_THREADED | ||
| 189 : | /* we have to consider all the primitives */ | ||
| 190 : | for (; symbols[i]!=(Label)0; i++) { | ||
| 191 : | r ^= (UCell)(symbols[i]); | ||
| 192 : | r = (r << 5) | (r >> (8*sizeof(Cell)-5)); | ||
| 193 : | } | ||
| 194 : | #else | ||
| 195 : | /* in indirect threaded code all primitives are accessed through the | ||
| 196 : | symbols table, so we just have to put the base address of symbols | ||
| 197 : | in the checksum */ | ||
| 198 : | r ^= (UCell)symbols; | ||
| 199 : | #endif | ||
| 200 : | return r; | ||
| 201 : | } | ||
| 202 : | |||
| 203 : | anton | 1.3 | Address verbose_malloc(Cell size) |
| 204 : | { | ||
| 205 : | Address r; | ||
| 206 : | /* leave a little room (64B) for stack underflows */ | ||
| 207 : | if ((r = malloc(size+64))==NULL) { | ||
| 208 : | perror(progname); | ||
| 209 : | exit(1); | ||
| 210 : | } | ||
| 211 : | r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float))); | ||
| 212 : | if (debug) | ||
| 213 : | fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r); | ||
| 214 : | return r; | ||
| 215 : | } | ||
| 216 : | |||
| 217 : | anton | 1.33 | static Address next_address=0; |
| 218 : | void after_alloc(Address r, Cell size) | ||
| 219 : | { | ||
| 220 : | if (r != (Address)-1) { | ||
| 221 : | if (debug) | ||
| 222 : | fprintf(stderr, "success, address=$%lx\n", (long) r); | ||
| 223 : | if (pagesize != 1) | ||
| 224 : | next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */ | ||
| 225 : | } else { | ||
| 226 : | if (debug) | ||
| 227 : | fprintf(stderr, "failed: %s\n", strerror(errno)); | ||
| 228 : | } | ||
| 229 : | } | ||
| 230 : | |||
| 231 : | anton | 1.34 | #ifndef MAP_FAILED |
| 232 : | #define MAP_FAILED ((Address) -1) | ||
| 233 : | #endif | ||
| 234 : | #ifndef MAP_FILE | ||
| 235 : | # define MAP_FILE 0 | ||
| 236 : | #endif | ||
| 237 : | #ifndef MAP_PRIVATE | ||
| 238 : | # define MAP_PRIVATE 0 | ||
| 239 : | #endif | ||
| 240 : | |||
| 241 : | #if defined(HAVE_MMAP) | ||
| 242 : | static Address alloc_mmap(Cell size) | ||
| 243 : | anton | 1.1 | { |
| 244 : | Address r; | ||
| 245 : | |||
| 246 : | #if defined(MAP_ANON) | ||
| 247 : | if (debug) | ||
| 248 : | fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size); | ||
| 249 : | anton | 1.34 | r = mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); |
| 250 : | anton | 1.1 | #else /* !defined(MAP_ANON) */ |
| 251 : | anton | 1.17 | /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are |
| 252 : | apparently defaults) */ | ||
| 253 : | anton | 1.1 | static int dev_zero=-1; |
| 254 : | |||
| 255 : | if (dev_zero == -1) | ||
| 256 : | dev_zero = open("/dev/zero", O_RDONLY); | ||
| 257 : | if (dev_zero == -1) { | ||
| 258 : | anton | 1.34 | r = MAP_FAILED; |
| 259 : | anton | 1.1 | if (debug) |
| 260 : | fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ", | ||
| 261 : | strerror(errno)); | ||
| 262 : | } else { | ||
| 263 : | if (debug) | ||
| 264 : | fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size); | ||
| 265 : | r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0); | ||
| 266 : | } | ||
| 267 : | #endif /* !defined(MAP_ANON) */ | ||
| 268 : | anton | 1.34 | after_alloc(r, size); |
| 269 : | return r; | ||
| 270 : | } | ||
| 271 : | #endif | ||
| 272 : | |||
| 273 : | Address my_alloc(Cell size) | ||
| 274 : | { | ||
| 275 : | #if HAVE_MMAP | ||
| 276 : | Address r; | ||
| 277 : | |||
| 278 : | r=alloc_mmap(size); | ||
| 279 : | if (r!=MAP_FAILED) | ||
| 280 : | anton | 1.1 | return r; |
| 281 : | #endif /* HAVE_MMAP */ | ||
| 282 : | anton | 1.3 | /* use malloc as fallback */ |
| 283 : | return verbose_malloc(size); | ||
| 284 : | anton | 1.1 | } |
| 285 : | |||
| 286 : | anton | 1.3 | #if (defined(mips) && !defined(INDIRECT_THREADED)) |
| 287 : | /* the 256MB jump restriction on the MIPS architecture makes the | ||
| 288 : | combination of direct threading and mmap unsafe. */ | ||
| 289 : | anton | 1.33 | #define mips_dict_alloc 1 |
| 290 : | anton | 1.3 | #define dict_alloc(size) verbose_malloc(size) |
| 291 : | #else | ||
| 292 : | #define dict_alloc(size) my_alloc(size) | ||
| 293 : | #endif | ||
| 294 : | |||
| 295 : | anton | 1.34 | Address dict_alloc_read(FILE *file, Cell imagesize, Cell dictsize, Cell offset) |
| 296 : | anton | 1.33 | { |
| 297 : | anton | 1.34 | Address image = MAP_FAILED; |
| 298 : | anton | 1.33 | |
| 299 : | anton | 1.34 | #if defined(HAVE_MMAP) && !defined(mips_dict_alloc) |
| 300 : | anton | 1.33 | if (offset==0) { |
| 301 : | anton | 1.34 | image=alloc_mmap(dictsize); |
| 302 : | anton | 1.33 | if (debug) |
| 303 : | anton | 1.34 | fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FIXED|MAP_FILE, imagefile, 0); ", (long)image, (long)imagesize); |
| 304 : | image = mmap(image, imagesize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FIXED|MAP_FILE|MAP_PRIVATE, fileno(file), 0); | ||
| 305 : | after_alloc(image,dictsize); | ||
| 306 : | anton | 1.33 | } |
| 307 : | anton | 1.34 | #endif /* defined(MAP_ANON) && !defined(mips_dict_alloc) */ |
| 308 : | if (image == MAP_FAILED) { | ||
| 309 : | image = dict_alloc(dictsize+offset)+offset; | ||
| 310 : | anton | 1.33 | rewind(file); /* fseek(imagefile,0L,SEEK_SET); */ |
| 311 : | anton | 1.34 | fread(image, 1, imagesize, file); |
| 312 : | anton | 1.33 | } |
| 313 : | return image; | ||
| 314 : | } | ||
| 315 : | |||
| 316 : | pazsan | 1.10 | void set_stack_sizes(ImageHeader * header) |
| 317 : | { | ||
| 318 : | if (dictsize==0) | ||
| 319 : | dictsize = header->dict_size; | ||
| 320 : | if (dsize==0) | ||
| 321 : | dsize = header->data_stack_size; | ||
| 322 : | if (rsize==0) | ||
| 323 : | rsize = header->return_stack_size; | ||
| 324 : | if (fsize==0) | ||
| 325 : | fsize = header->fp_stack_size; | ||
| 326 : | if (lsize==0) | ||
| 327 : | lsize = header->locals_stack_size; | ||
| 328 : | dictsize=maxaligned(dictsize); | ||
| 329 : | dsize=maxaligned(dsize); | ||
| 330 : | rsize=maxaligned(rsize); | ||
| 331 : | lsize=maxaligned(lsize); | ||
| 332 : | fsize=maxaligned(fsize); | ||
| 333 : | } | ||
| 334 : | |||
| 335 : | void alloc_stacks(ImageHeader * header) | ||
| 336 : | { | ||
| 337 : | header->dict_size=dictsize; | ||
| 338 : | header->data_stack_size=dsize; | ||
| 339 : | header->fp_stack_size=fsize; | ||
| 340 : | header->return_stack_size=rsize; | ||
| 341 : | header->locals_stack_size=lsize; | ||
| 342 : | |||
| 343 : | header->data_stack_base=my_alloc(dsize); | ||
| 344 : | header->fp_stack_base=my_alloc(fsize); | ||
| 345 : | header->return_stack_base=my_alloc(rsize); | ||
| 346 : | header->locals_stack_base=my_alloc(lsize); | ||
| 347 : | } | ||
| 348 : | |||
| 349 : | pazsan | 1.44 | #warning You can ignore the warnings about clobbered variables in go_forth |
| 350 : | pazsan | 1.11 | int go_forth(Address image, int stack, Cell *entries) |
| 351 : | { | ||
| 352 : | anton | 1.38 | volatile ImageHeader *image_header = (ImageHeader *)image; |
| 353 : | anton | 1.18 | Cell *sp0=(Cell*)(image_header->data_stack_base + dsize); |
| 354 : | pazsan | 1.44 | Cell *rp0=(Cell *)(image_header->return_stack_base + rsize); |
| 355 : | anton | 1.18 | Float *fp0=(Float *)(image_header->fp_stack_base + fsize); |
| 356 : | pazsan | 1.44 | #ifdef GFORTH_DEBUGGING |
| 357 : | anton | 1.38 | volatile Cell *orig_rp0=rp0; |
| 358 : | pazsan | 1.44 | #endif |
| 359 : | anton | 1.18 | Address lp0=image_header->locals_stack_base + lsize; |
| 360 : | Xt *ip0=(Xt *)(image_header->boot_entry); | ||
| 361 : | pazsan | 1.13 | #ifdef SYSSIGNALS |
| 362 : | pazsan | 1.11 | int throw_code; |
| 363 : | pazsan | 1.13 | #endif |
| 364 : | pazsan | 1.11 | |
| 365 : | /* ensure that the cached elements (if any) are accessible */ | ||
| 366 : | anton | 1.41 | IF_spTOS(sp0--); |
| 367 : | IF_fpTOS(fp0--); | ||
| 368 : | pazsan | 1.11 | |
| 369 : | for(;stack>0;stack--) | ||
| 370 : | anton | 1.18 | *--sp0=entries[stack-1]; |
| 371 : | pazsan | 1.11 | |
| 372 : | pazsan | 1.30 | #ifdef SYSSIGNALS |
| 373 : | pazsan | 1.11 | get_winsize(); |
| 374 : | |||
| 375 : | install_signal_handlers(); /* right place? */ | ||
| 376 : | |||
| 377 : | if ((throw_code=setjmp(throw_jmp_buf))) { | ||
| 378 : | static Cell signal_data_stack[8]; | ||
| 379 : | static Cell signal_return_stack[8]; | ||
| 380 : | static Float signal_fp_stack[1]; | ||
| 381 : | pazsan | 1.13 | |
| 382 : | pazsan | 1.11 | signal_data_stack[7]=throw_code; |
| 383 : | anton | 1.18 | |
| 384 : | #ifdef GFORTH_DEBUGGING | ||
| 385 : | anton | 1.38 | /* fprintf(stderr,"\nrp=%ld\n",(long)rp); */ |
| 386 : | if (rp <= orig_rp0 && rp > (Cell *)(image_header->return_stack_base+5)) { | ||
| 387 : | anton | 1.18 | /* no rstack overflow or underflow */ |
| 388 : | rp0 = rp; | ||
| 389 : | anton | 1.27 | *--rp0 = (Cell)ip; |
| 390 : | anton | 1.18 | } |
| 391 : | else /* I love non-syntactic ifdefs :-) */ | ||
| 392 : | #endif | ||
| 393 : | rp0 = signal_return_stack+8; | ||
| 394 : | anton | 1.25 | /* fprintf(stderr, "rp=$%x\n",rp0);*/ |
| 395 : | pazsan | 1.11 | |
| 396 : | anton | 1.33 | return((int)(Cell)engine(image_header->throw_entry, signal_data_stack+7, |
| 397 : | anton | 1.18 | rp0, signal_fp_stack, 0)); |
| 398 : | pazsan | 1.11 | } |
| 399 : | pazsan | 1.13 | #endif |
| 400 : | pazsan | 1.11 | |
| 401 : | anton | 1.33 | return((int)(Cell)engine(ip0,sp0,rp0,fp0,lp0)); |
| 402 : | pazsan | 1.11 | } |
| 403 : | |||
| 404 : | anton | 1.21 | |
| 405 : | pazsan | 1.30 | #ifndef INCLUDE_IMAGE |
| 406 : | anton | 1.21 | void print_sizes(Cell sizebyte) |
| 407 : | /* print size information */ | ||
| 408 : | { | ||
| 409 : | static char* endianstring[]= { " big","little" }; | ||
| 410 : | |||
| 411 : | fprintf(stderr,"%s endian, cell=%d bytes, char=%d bytes, au=%d bytes\n", | ||
| 412 : | endianstring[sizebyte & 1], | ||
| 413 : | 1 << ((sizebyte >> 1) & 3), | ||
| 414 : | 1 << ((sizebyte >> 3) & 3), | ||
| 415 : | 1 << ((sizebyte >> 5) & 3)); | ||
| 416 : | } | ||
| 417 : | |||
| 418 : | anton | 1.1 | Address loader(FILE *imagefile, char* filename) |
| 419 : | /* returns the address of the image proper (after the preamble) */ | ||
| 420 : | { | ||
| 421 : | ImageHeader header; | ||
| 422 : | Address image; | ||
| 423 : | Address imp; /* image+preamble */ | ||
| 424 : | anton | 1.17 | Char magic[8]; |
| 425 : | char magic7; /* size byte of magic number */ | ||
| 426 : | anton | 1.1 | Cell preamblesize=0; |
| 427 : | pazsan | 1.6 | Cell data_offset = offset_image ? 56*sizeof(Cell) : 0; |
| 428 : | anton | 1.1 | UCell check_sum; |
| 429 : | pazsan | 1.15 | Cell ausize = ((RELINFOBITS == 8) ? 0 : |
| 430 : | (RELINFOBITS == 16) ? 1 : | ||
| 431 : | (RELINFOBITS == 32) ? 2 : 3); | ||
| 432 : | Cell charsize = ((sizeof(Char) == 1) ? 0 : | ||
| 433 : | (sizeof(Char) == 2) ? 1 : | ||
| 434 : | (sizeof(Char) == 4) ? 2 : 3) + ausize; | ||
| 435 : | Cell cellsize = ((sizeof(Cell) == 1) ? 0 : | ||
| 436 : | (sizeof(Cell) == 2) ? 1 : | ||
| 437 : | (sizeof(Cell) == 4) ? 2 : 3) + ausize; | ||
| 438 : | anton | 1.21 | Cell sizebyte = (ausize << 5) + (charsize << 3) + (cellsize << 1) + |
| 439 : | #ifdef WORDS_BIGENDIAN | ||
| 440 : | 0 | ||
| 441 : | #else | ||
| 442 : | 1 | ||
| 443 : | #endif | ||
| 444 : | ; | ||
| 445 : | anton | 1.1 | |
| 446 : | anton | 1.43 | vm_prims = engine(0,0,0,0,0); |
| 447 : | anton | 1.1 | #ifndef DOUBLY_INDIRECT |
| 448 : | anton | 1.43 | check_sum = checksum(vm_prims); |
| 449 : | anton | 1.1 | #else /* defined(DOUBLY_INDIRECT) */ |
| 450 : | anton | 1.43 | check_sum = (UCell)vm_prims; |
| 451 : | anton | 1.1 | #endif /* defined(DOUBLY_INDIRECT) */ |
| 452 : | pazsan | 1.10 | |
| 453 : | do { | ||
| 454 : | if(fread(magic,sizeof(Char),8,imagefile) < 8) { | ||
| 455 : | pazsan | 1.15 | fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.4) image.\n", |
| 456 : | pazsan | 1.10 | progname, filename); |
| 457 : | exit(1); | ||
| 458 : | anton | 1.1 | } |
| 459 : | pazsan | 1.10 | preamblesize+=8; |
| 460 : | pazsan | 1.15 | } while(memcmp(magic,"Gforth2",7)); |
| 461 : | anton | 1.17 | magic7 = magic[7]; |
| 462 : | anton | 1.1 | if (debug) { |
| 463 : | anton | 1.17 | magic[7]='\0'; |
| 464 : | anton | 1.21 | fprintf(stderr,"Magic found: %s ", magic); |
| 465 : | print_sizes(magic7); | ||
| 466 : | anton | 1.1 | } |
| 467 : | |||
| 468 : | anton | 1.21 | if (magic7 != sizebyte) |
| 469 : | { | ||
| 470 : | fprintf(stderr,"This image is: "); | ||
| 471 : | print_sizes(magic7); | ||
| 472 : | fprintf(stderr,"whereas the machine is "); | ||
| 473 : | print_sizes(sizebyte); | ||
| 474 : | anton | 1.1 | exit(-2); |
| 475 : | }; | ||
| 476 : | |||
| 477 : | fread((void *)&header,sizeof(ImageHeader),1,imagefile); | ||
| 478 : | pazsan | 1.10 | |
| 479 : | set_stack_sizes(&header); | ||
| 480 : | anton | 1.1 | |
| 481 : | #if HAVE_GETPAGESIZE | ||
| 482 : | pagesize=getpagesize(); /* Linux/GNU libc offers this */ | ||
| 483 : | #elif HAVE_SYSCONF && defined(_SC_PAGESIZE) | ||
| 484 : | pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */ | ||
| 485 : | #elif PAGESIZE | ||
| 486 : | pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */ | ||
| 487 : | #endif | ||
| 488 : | if (debug) | ||
| 489 : | jwilke | 1.5 | fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize); |
| 490 : | anton | 1.1 | |
| 491 : | anton | 1.34 | image = dict_alloc_read(imagefile, preamblesize+header.image_size, |
| 492 : | preamblesize+dictsize, data_offset); | ||
| 493 : | anton | 1.33 | imp=image+preamblesize; |
| 494 : | anton | 1.1 | if (clear_dictionary) |
| 495 : | anton | 1.33 | memset(imp+header.image_size, 0, dictsize-header.image_size); |
| 496 : | anton | 1.1 | if(header.base==0) { |
| 497 : | Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1; | ||
| 498 : | char reloc_bits[reloc_size]; | ||
| 499 : | anton | 1.33 | fseek(imagefile, preamblesize+header.image_size, SEEK_SET); |
| 500 : | pazsan | 1.10 | fread(reloc_bits, 1, reloc_size, imagefile); |
| 501 : | anton | 1.43 | relocate((Cell *)imp, reloc_bits, header.image_size, vm_prims); |
| 502 : | anton | 1.1 | #if 0 |
| 503 : | { /* let's see what the relocator did */ | ||
| 504 : | FILE *snapshot=fopen("snapshot.fi","wb"); | ||
| 505 : | fwrite(image,1,imagesize,snapshot); | ||
| 506 : | fclose(snapshot); | ||
| 507 : | } | ||
| 508 : | #endif | ||
| 509 : | } | ||
| 510 : | else if(header.base!=imp) { | ||
| 511 : | fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n", | ||
| 512 : | progname, (unsigned long)header.base, (unsigned long)imp); | ||
| 513 : | exit(1); | ||
| 514 : | } | ||
| 515 : | if (header.checksum==0) | ||
| 516 : | ((ImageHeader *)imp)->checksum=check_sum; | ||
| 517 : | else if (header.checksum != check_sum) { | ||
| 518 : | fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n", | ||
| 519 : | progname, (unsigned long)(header.checksum),(unsigned long)check_sum); | ||
| 520 : | exit(1); | ||
| 521 : | } | ||
| 522 : | fclose(imagefile); | ||
| 523 : | |||
| 524 : | pazsan | 1.10 | alloc_stacks((ImageHeader *)imp); |
| 525 : | anton | 1.1 | |
| 526 : | CACHE_FLUSH(imp, header.image_size); | ||
| 527 : | |||
| 528 : | return imp; | ||
| 529 : | } | ||
| 530 : | |||
| 531 : | anton | 1.28 | /* index of last '/' or '\' in file, 0 if there is none. !! Hmm, could |
| 532 : | be implemented with strrchr and the separator should be | ||
| 533 : | OS-dependent */ | ||
| 534 : | anton | 1.1 | int onlypath(char *file) |
| 535 : | pazsan | 1.10 | { |
| 536 : | int i; | ||
| 537 : | anton | 1.1 | i=strlen(file); |
| 538 : | pazsan | 1.10 | while (i) { |
| 539 : | if (file[i]=='\\' || file[i]=='/') break; | ||
| 540 : | i--; | ||
| 541 : | } | ||
| 542 : | return i; | ||
| 543 : | anton | 1.1 | } |
| 544 : | |||
| 545 : | FILE *openimage(char *fullfilename) | ||
| 546 : | pazsan | 1.10 | { |
| 547 : | FILE *image_file; | ||
| 548 : | anton | 1.28 | char * expfilename = tilde_cstr(fullfilename, strlen(fullfilename), 1); |
| 549 : | pazsan | 1.10 | |
| 550 : | anton | 1.28 | image_file=fopen(expfilename,"rb"); |
| 551 : | anton | 1.1 | if (image_file!=NULL && debug) |
| 552 : | anton | 1.28 | fprintf(stderr, "Opened image file: %s\n", expfilename); |
| 553 : | pazsan | 1.10 | return image_file; |
| 554 : | anton | 1.1 | } |
| 555 : | |||
| 556 : | anton | 1.28 | /* try to open image file concat(path[0:len],imagename) */ |
| 557 : | anton | 1.1 | FILE *checkimage(char *path, int len, char *imagename) |
| 558 : | pazsan | 1.10 | { |
| 559 : | int dirlen=len; | ||
| 560 : | anton | 1.1 | char fullfilename[dirlen+strlen(imagename)+2]; |
| 561 : | pazsan | 1.10 | |
| 562 : | anton | 1.1 | memcpy(fullfilename, path, dirlen); |
| 563 : | if (fullfilename[dirlen-1]!='/') | ||
| 564 : | fullfilename[dirlen++]='/'; | ||
| 565 : | strcpy(fullfilename+dirlen,imagename); | ||
| 566 : | pazsan | 1.10 | return openimage(fullfilename); |
| 567 : | anton | 1.1 | } |
| 568 : | |||
| 569 : | pazsan | 1.10 | FILE * open_image_file(char * imagename, char * path) |
| 570 : | anton | 1.1 | { |
| 571 : | pazsan | 1.10 | FILE * image_file=NULL; |
| 572 : | anton | 1.28 | char *origpath=path; |
| 573 : | pazsan | 1.10 | |
| 574 : | if(strchr(imagename, '/')==NULL) { | ||
| 575 : | /* first check the directory where the exe file is in !! 01may97jaw */ | ||
| 576 : | if (onlypath(progname)) | ||
| 577 : | image_file=checkimage(progname, onlypath(progname), imagename); | ||
| 578 : | if (!image_file) | ||
| 579 : | do { | ||
| 580 : | char *pend=strchr(path, PATHSEP); | ||
| 581 : | if (pend==NULL) | ||
| 582 : | pend=path+strlen(path); | ||
| 583 : | if (strlen(path)==0) break; | ||
| 584 : | image_file=checkimage(path, pend-path, imagename); | ||
| 585 : | path=pend+(*pend==PATHSEP); | ||
| 586 : | } while (image_file==NULL); | ||
| 587 : | } else { | ||
| 588 : | image_file=openimage(imagename); | ||
| 589 : | } | ||
| 590 : | anton | 1.1 | |
| 591 : | pazsan | 1.10 | if (!image_file) { |
| 592 : | fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n", | ||
| 593 : | anton | 1.28 | progname, imagename, origpath); |
| 594 : | pazsan | 1.10 | exit(1); |
| 595 : | anton | 1.7 | } |
| 596 : | |||
| 597 : | pazsan | 1.10 | return image_file; |
| 598 : | } | ||
| 599 : | pazsan | 1.11 | #endif |
| 600 : | |||
| 601 : | #ifdef HAS_OS | ||
| 602 : | UCell convsize(char *s, UCell elemsize) | ||
| 603 : | /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number | ||
| 604 : | of bytes. the letter at the end indicates the unit, where e stands | ||
| 605 : | for the element size. default is e */ | ||
| 606 : | { | ||
| 607 : | char *endp; | ||
| 608 : | UCell n,m; | ||
| 609 : | |||
| 610 : | m = elemsize; | ||
| 611 : | n = strtoul(s,&endp,0); | ||
| 612 : | if (endp!=NULL) { | ||
| 613 : | if (strcmp(endp,"b")==0) | ||
| 614 : | m=1; | ||
| 615 : | else if (strcmp(endp,"k")==0) | ||
| 616 : | m=1024; | ||
| 617 : | else if (strcmp(endp,"M")==0) | ||
| 618 : | m=1024*1024; | ||
| 619 : | else if (strcmp(endp,"G")==0) | ||
| 620 : | m=1024*1024*1024; | ||
| 621 : | else if (strcmp(endp,"T")==0) { | ||
| 622 : | #if (SIZEOF_CHAR_P > 4) | ||
| 623 : | anton | 1.24 | m=1024L*1024*1024*1024; |
| 624 : | pazsan | 1.11 | #else |
| 625 : | fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp); | ||
| 626 : | exit(1); | ||
| 627 : | #endif | ||
| 628 : | } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) { | ||
| 629 : | fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp); | ||
| 630 : | exit(1); | ||
| 631 : | } | ||
| 632 : | } | ||
| 633 : | return n*m; | ||
| 634 : | } | ||
| 635 : | pazsan | 1.10 | |
| 636 : | void gforth_args(int argc, char ** argv, char ** path, char ** imagename) | ||
| 637 : | { | ||
| 638 : | int c; | ||
| 639 : | |||
| 640 : | anton | 1.1 | opterr=0; |
| 641 : | while (1) { | ||
| 642 : | int option_index=0; | ||
| 643 : | static struct option opts[] = { | ||
| 644 : | anton | 1.29 | {"appl-image", required_argument, NULL, 'a'}, |
| 645 : | anton | 1.1 | {"image-file", required_argument, NULL, 'i'}, |
| 646 : | {"dictionary-size", required_argument, NULL, 'm'}, | ||
| 647 : | {"data-stack-size", required_argument, NULL, 'd'}, | ||
| 648 : | {"return-stack-size", required_argument, NULL, 'r'}, | ||
| 649 : | {"fp-stack-size", required_argument, NULL, 'f'}, | ||
| 650 : | {"locals-stack-size", required_argument, NULL, 'l'}, | ||
| 651 : | {"path", required_argument, NULL, 'p'}, | ||
| 652 : | {"version", no_argument, NULL, 'v'}, | ||
| 653 : | {"help", no_argument, NULL, 'h'}, | ||
| 654 : | /* put something != 0 into offset_image */ | ||
| 655 : | {"offset-image", no_argument, &offset_image, 1}, | ||
| 656 : | {"no-offset-im", no_argument, &offset_image, 0}, | ||
| 657 : | {"clear-dictionary", no_argument, &clear_dictionary, 1}, | ||
| 658 : | anton | 1.4 | {"die-on-signal", no_argument, &die_on_signal, 1}, |
| 659 : | anton | 1.1 | {"debug", no_argument, &debug, 1}, |
| 660 : | {0,0,0,0} | ||
| 661 : | /* no-init-file, no-rc? */ | ||
| 662 : | }; | ||
| 663 : | |||
| 664 : | pazsan | 1.36 | c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vhoncsx", opts, &option_index); |
| 665 : | anton | 1.1 | |
| 666 : | switch (c) { | ||
| 667 : | anton | 1.29 | case EOF: return; |
| 668 : | case '?': optind--; return; | ||
| 669 : | case 'a': *imagename = optarg; return; | ||
| 670 : | pazsan | 1.10 | case 'i': *imagename = optarg; break; |
| 671 : | anton | 1.1 | case 'm': dictsize = convsize(optarg,sizeof(Cell)); break; |
| 672 : | case 'd': dsize = convsize(optarg,sizeof(Cell)); break; | ||
| 673 : | case 'r': rsize = convsize(optarg,sizeof(Cell)); break; | ||
| 674 : | case 'f': fsize = convsize(optarg,sizeof(Float)); break; | ||
| 675 : | case 'l': lsize = convsize(optarg,sizeof(Cell)); break; | ||
| 676 : | pazsan | 1.10 | case 'p': *path = optarg; break; |
| 677 : | pazsan | 1.36 | case 'o': offset_image = 1; break; |
| 678 : | case 'n': offset_image = 0; break; | ||
| 679 : | case 'c': clear_dictionary = 1; break; | ||
| 680 : | case 's': die_on_signal = 1; break; | ||
| 681 : | case 'x': debug = 1; break; | ||
| 682 : | anton | 1.8 | case 'v': fprintf(stderr, "gforth %s\n", VERSION); exit(0); |
| 683 : | anton | 1.1 | case 'h': |
| 684 : | anton | 1.29 | fprintf(stderr, "Usage: %s [engine options] ['--'] [image arguments]\n\ |
| 685 : | anton | 1.1 | Engine Options:\n\ |
| 686 : | anton | 1.29 | --appl-image FILE equivalent to '--image-file=FILE --'\n\ |
| 687 : | pazsan | 1.10 | --clear-dictionary Initialize the dictionary with 0 bytes\n\ |
| 688 : | -d SIZE, --data-stack-size=SIZE Specify data stack size\n\ | ||
| 689 : | --debug Print debugging information during startup\n\ | ||
| 690 : | --die-on-signal exit instead of CATCHing some signals\n\ | ||
| 691 : | -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\ | ||
| 692 : | -h, --help Print this message and exit\n\ | ||
| 693 : | -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\ | ||
| 694 : | -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\ | ||
| 695 : | -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\ | ||
| 696 : | --no-offset-im Load image at normal position\n\ | ||
| 697 : | --offset-image Load image at a different position\n\ | ||
| 698 : | -p PATH, --path=PATH Search path for finding image and sources\n\ | ||
| 699 : | -r SIZE, --return-stack-size=SIZE Specify return stack size\n\ | ||
| 700 : | -v, --version Print version and exit\n\ | ||
| 701 : | anton | 1.1 | SIZE arguments consist of an integer followed by a unit. The unit can be\n\ |
| 702 : | pazsan | 1.10 | `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n", |
| 703 : | argv[0]); | ||
| 704 : | optind--; | ||
| 705 : | return; | ||
| 706 : | anton | 1.1 | } |
| 707 : | } | ||
| 708 : | pazsan | 1.10 | } |
| 709 : | pazsan | 1.11 | #endif |
| 710 : | pazsan | 1.10 | |
| 711 : | #ifdef INCLUDE_IMAGE | ||
| 712 : | extern Cell image[]; | ||
| 713 : | extern const char reloc_bits[]; | ||
| 714 : | #endif | ||
| 715 : | |||
| 716 : | int main(int argc, char **argv, char **env) | ||
| 717 : | { | ||
| 718 : | pazsan | 1.30 | #ifdef HAS_OS |
| 719 : | pazsan | 1.10 | char *path = getenv("GFORTHPATH") ? : DEFAULTPATH; |
| 720 : | pazsan | 1.30 | #else |
| 721 : | char *path = DEFAULTPATH; | ||
| 722 : | #endif | ||
| 723 : | pazsan | 1.13 | #ifndef INCLUDE_IMAGE |
| 724 : | pazsan | 1.10 | char *imagename="gforth.fi"; |
| 725 : | FILE *image_file; | ||
| 726 : | Address image; | ||
| 727 : | #endif | ||
| 728 : | int retvalue; | ||
| 729 : | |||
| 730 : | #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED) | ||
| 731 : | /* turn on alignment checks on the 486. | ||
| 732 : | * on the 386 this should have no effect. */ | ||
| 733 : | __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;"); | ||
| 734 : | /* this is unusable with Linux' libc.4.6.27, because this library is | ||
| 735 : | not alignment-clean; we would have to replace some library | ||
| 736 : | functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep | ||
| 737 : | the stack FP-aligned. */ | ||
| 738 : | #endif | ||
| 739 : | |||
| 740 : | /* buffering of the user output device */ | ||
| 741 : | pazsan | 1.11 | #ifdef _IONBF |
| 742 : | pazsan | 1.10 | if (isatty(fileno(stdout))) { |
| 743 : | fflush(stdout); | ||
| 744 : | setvbuf(stdout,NULL,_IONBF,0); | ||
| 745 : | anton | 1.1 | } |
| 746 : | pazsan | 1.11 | #endif |
| 747 : | anton | 1.1 | |
| 748 : | pazsan | 1.10 | progname = argv[0]; |
| 749 : | |||
| 750 : | pazsan | 1.11 | #ifdef HAS_OS |
| 751 : | pazsan | 1.10 | gforth_args(argc, argv, &path, &imagename); |
| 752 : | pazsan | 1.11 | #endif |
| 753 : | pazsan | 1.10 | |
| 754 : | #ifdef INCLUDE_IMAGE | ||
| 755 : | set_stack_sizes((ImageHeader *)image); | ||
| 756 : | pazsan | 1.22 | if(((ImageHeader *)image)->base != image) |
| 757 : | relocate(image, reloc_bits, ((ImageHeader *)image)->image_size, | ||
| 758 : | (Label*)engine(0, 0, 0, 0, 0)); | ||
| 759 : | pazsan | 1.10 | alloc_stacks((ImageHeader *)image); |
| 760 : | #else | ||
| 761 : | image_file = open_image_file(imagename, path); | ||
| 762 : | image = loader(image_file, imagename); | ||
| 763 : | #endif | ||
| 764 : | anton | 1.24 | gforth_header=(ImageHeader *)image; /* used in SIGSEGV handler */ |
| 765 : | anton | 1.1 | |
| 766 : | { | ||
| 767 : | pazsan | 1.10 | char path2[strlen(path)+1]; |
| 768 : | anton | 1.1 | char *p1, *p2; |
| 769 : | Cell environ[]= { | ||
| 770 : | (Cell)argc-(optind-1), | ||
| 771 : | (Cell)(argv+(optind-1)), | ||
| 772 : | pazsan | 1.10 | (Cell)strlen(path), |
| 773 : | anton | 1.1 | (Cell)path2}; |
| 774 : | argv[optind-1] = progname; | ||
| 775 : | /* | ||
| 776 : | for (i=0; i<environ[0]; i++) | ||
| 777 : | printf("%s\n", ((char **)(environ[1]))[i]); | ||
| 778 : | */ | ||
| 779 : | /* make path OS-independent by replacing path separators with NUL */ | ||
| 780 : | pazsan | 1.10 | for (p1=path, p2=path2; *p1!='\0'; p1++, p2++) |
| 781 : | anton | 1.1 | if (*p1==PATHSEP) |
| 782 : | *p2 = '\0'; | ||
| 783 : | else | ||
| 784 : | *p2 = *p1; | ||
| 785 : | *p2='\0'; | ||
| 786 : | pazsan | 1.10 | retvalue = go_forth(image, 4, environ); |
| 787 : | anton | 1.42 | #ifdef VM_PROFILING |
| 788 : | vm_print_profile(stderr); | ||
| 789 : | #endif | ||
| 790 : | anton | 1.1 | deprep_terminal(); |
| 791 : | } | ||
| 792 : | pazsan | 1.13 | return retvalue; |
| 793 : | anton | 1.1 | } |
|
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