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| 1 : | anton | 1.1 | /* command line interpretation, image loading etc. for Gforth |
| 2 : | |||
| 3 : | |||
| 4 : | anton | 1.12 | Copyright (C) 1995,1996,1997,1998 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 : | 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 : | pazsan | 1.2 | #include <unistd.h> |
| 28 : | anton | 1.1 | #include <string.h> |
| 29 : | #include <math.h> | ||
| 30 : | #include <sys/types.h> | ||
| 31 : | #include <sys/stat.h> | ||
| 32 : | #include <fcntl.h> | ||
| 33 : | #include <assert.h> | ||
| 34 : | #include <stdlib.h> | ||
| 35 : | pazsan | 1.11 | #ifndef STANDALONE |
| 36 : | anton | 1.1 | #if HAVE_SYS_MMAN_H |
| 37 : | #include <sys/mman.h> | ||
| 38 : | #endif | ||
| 39 : | pazsan | 1.11 | #endif |
| 40 : | anton | 1.1 | #include "forth.h" |
| 41 : | #include "io.h" | ||
| 42 : | #include "getopt.h" | ||
| 43 : | pazsan | 1.11 | #ifdef STANDALONE |
| 44 : | #include <systypes.h> | ||
| 45 : | #endif | ||
| 46 : | anton | 1.1 | |
| 47 : | #define PRIM_VERSION 1 | ||
| 48 : | /* increment this whenever the primitives change in an incompatible way */ | ||
| 49 : | |||
| 50 : | pazsan | 1.14 | #ifndef DEFAULTPATH |
| 51 : | pazsan | 1.16 | # define DEFAULTPATH "~+" |
| 52 : | pazsan | 1.14 | #endif |
| 53 : | |||
| 54 : | anton | 1.1 | #ifdef MSDOS |
| 55 : | jmp_buf throw_jmp_buf; | ||
| 56 : | #endif | ||
| 57 : | |||
| 58 : | #if defined(DIRECT_THREADED) | ||
| 59 : | # define CA(n) (symbols[(n)]) | ||
| 60 : | #else | ||
| 61 : | # define CA(n) ((Cell)(symbols+(n))) | ||
| 62 : | #endif | ||
| 63 : | |||
| 64 : | #define maxaligned(n) (typeof(n))((((Cell)n)+sizeof(Float)-1)&-sizeof(Float)) | ||
| 65 : | |||
| 66 : | static UCell dictsize=0; | ||
| 67 : | static UCell dsize=0; | ||
| 68 : | static UCell rsize=0; | ||
| 69 : | static UCell fsize=0; | ||
| 70 : | static UCell lsize=0; | ||
| 71 : | int offset_image=0; | ||
| 72 : | anton | 1.4 | int die_on_signal=0; |
| 73 : | pazsan | 1.13 | #ifndef INCLUDE_IMAGE |
| 74 : | anton | 1.1 | static int clear_dictionary=0; |
| 75 : | pazsan | 1.13 | static size_t pagesize=0; |
| 76 : | #endif | ||
| 77 : | anton | 1.1 | static int debug=0; |
| 78 : | char *progname; | ||
| 79 : | |||
| 80 : | /* image file format: | ||
| 81 : | pazsan | 1.15 | * "#! binary-path -i\n" (e.g., "#! /usr/local/bin/gforth-0.4.0 -i\n") |
| 82 : | anton | 1.1 | * padding to a multiple of 8 |
| 83 : | pazsan | 1.15 | * magic: "Gforth2x" means format 0.4, |
| 84 : | * where x is a byte with | ||
| 85 : | * bit 7: reserved = 0 | ||
| 86 : | * bit 6:5: address unit size 2^n octets | ||
| 87 : | * bit 4:3: character size 2^n octets | ||
| 88 : | * bit 2:1: cell size 2^n octets | ||
| 89 : | * bit 0: endian, big=0, little=1. | ||
| 90 : | * The magic are always 8 octets, no matter what the native AU/character size is | ||
| 91 : | anton | 1.1 | * padding to max alignment (no padding necessary on current machines) |
| 92 : | * ImageHeader structure (see below) | ||
| 93 : | * data (size in ImageHeader.image_size) | ||
| 94 : | * tags ((if relocatable, 1 bit/data cell) | ||
| 95 : | * | ||
| 96 : | * tag==1 means that the corresponding word is an address; | ||
| 97 : | * If the word is >=0, the address is within the image; | ||
| 98 : | * addresses within the image are given relative to the start of the image. | ||
| 99 : | * If the word =-1 (CF_NIL), the address is NIL, | ||
| 100 : | * If the word is <CF_NIL and >CF(DODOES), it's a CFA (:, Create, ...) | ||
| 101 : | * If the word =CF(DODOES), it's a DOES> CFA | ||
| 102 : | * If the word =CF(DOESJUMP), it's a DOES JUMP (2 Cells after DOES>, | ||
| 103 : | * possibly containing a jump to dodoes) | ||
| 104 : | * If the word is <CF(DOESJUMP), it's a primitive | ||
| 105 : | */ | ||
| 106 : | |||
| 107 : | typedef struct { | ||
| 108 : | Address base; /* base address of image (0 if relocatable) */ | ||
| 109 : | UCell checksum; /* checksum of ca's to protect against some | ||
| 110 : | incompatible binary/executable combinations | ||
| 111 : | (0 if relocatable) */ | ||
| 112 : | UCell image_size; /* all sizes in bytes */ | ||
| 113 : | UCell dict_size; | ||
| 114 : | UCell data_stack_size; | ||
| 115 : | UCell fp_stack_size; | ||
| 116 : | UCell return_stack_size; | ||
| 117 : | UCell locals_stack_size; | ||
| 118 : | Xt *boot_entry; /* initial ip for booting (in BOOT) */ | ||
| 119 : | Xt *throw_entry; /* ip after signal (in THROW) */ | ||
| 120 : | Cell unused1; /* possibly tib stack size */ | ||
| 121 : | Cell unused2; | ||
| 122 : | Address data_stack_base; /* this and the following fields are initialized by the loader */ | ||
| 123 : | Address fp_stack_base; | ||
| 124 : | Address return_stack_base; | ||
| 125 : | Address locals_stack_base; | ||
| 126 : | } ImageHeader; | ||
| 127 : | /* the image-header is created in main.fs */ | ||
| 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 : | /* static char bits[8]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};*/ | ||
| 135 : | |||
| 136 : | /* printf("relocating %x[%x]\n", image, size); */ | ||
| 137 : | |||
| 138 : | for(k=0; k<=steps; k++) | ||
| 139 : | pazsan | 1.13 | for(j=0, bits=bitstring[k]; j<RELINFOBITS; j++, i++, bits<<=1) { |
| 140 : | anton | 1.1 | /* fprintf(stderr,"relocate: image[%d]\n", i);*/ |
| 141 : | pazsan | 1.13 | if(bits & (1U << (RELINFOBITS-1))) { |
| 142 : | anton | 1.1 | /* fprintf(stderr,"relocate: image[%d]=%d\n", i, image[i]);*/ |
| 143 : | pazsan | 1.11 | if((token=image[i])<0) |
| 144 : | switch(token) | ||
| 145 : | anton | 1.1 | { |
| 146 : | case CF_NIL : image[i]=0; break; | ||
| 147 : | #if !defined(DOUBLY_INDIRECT) | ||
| 148 : | case CF(DOCOL) : | ||
| 149 : | case CF(DOVAR) : | ||
| 150 : | case CF(DOCON) : | ||
| 151 : | case CF(DOUSER) : | ||
| 152 : | case CF(DODEFER) : | ||
| 153 : | pazsan | 1.11 | case CF(DOFIELD) : MAKE_CF(image+i,symbols[CF(token)]); break; |
| 154 : | anton | 1.1 | case CF(DOESJUMP): MAKE_DOES_HANDLER(image+i); break; |
| 155 : | #endif /* !defined(DOUBLY_INDIRECT) */ | ||
| 156 : | case CF(DODOES) : | ||
| 157 : | MAKE_DOES_CF(image+i,image[i+1]+((Cell)image)); | ||
| 158 : | break; | ||
| 159 : | default : | ||
| 160 : | /* printf("Code field generation image[%x]:=CA(%x)\n", | ||
| 161 : | i, CF(image[i])); */ | ||
| 162 : | pazsan | 1.11 | image[i]=(Cell)CA(CF(token)); |
| 163 : | anton | 1.1 | } |
| 164 : | else | ||
| 165 : | image[i]+=(Cell)image; | ||
| 166 : | } | ||
| 167 : | } | ||
| 168 : | } | ||
| 169 : | |||
| 170 : | UCell checksum(Label symbols[]) | ||
| 171 : | { | ||
| 172 : | UCell r=PRIM_VERSION; | ||
| 173 : | Cell i; | ||
| 174 : | |||
| 175 : | for (i=DOCOL; i<=DOESJUMP; i++) { | ||
| 176 : | r ^= (UCell)(symbols[i]); | ||
| 177 : | r = (r << 5) | (r >> (8*sizeof(Cell)-5)); | ||
| 178 : | } | ||
| 179 : | #ifdef DIRECT_THREADED | ||
| 180 : | /* we have to consider all the primitives */ | ||
| 181 : | for (; symbols[i]!=(Label)0; i++) { | ||
| 182 : | r ^= (UCell)(symbols[i]); | ||
| 183 : | r = (r << 5) | (r >> (8*sizeof(Cell)-5)); | ||
| 184 : | } | ||
| 185 : | #else | ||
| 186 : | /* in indirect threaded code all primitives are accessed through the | ||
| 187 : | symbols table, so we just have to put the base address of symbols | ||
| 188 : | in the checksum */ | ||
| 189 : | r ^= (UCell)symbols; | ||
| 190 : | #endif | ||
| 191 : | return r; | ||
| 192 : | } | ||
| 193 : | |||
| 194 : | anton | 1.3 | Address verbose_malloc(Cell size) |
| 195 : | { | ||
| 196 : | Address r; | ||
| 197 : | /* leave a little room (64B) for stack underflows */ | ||
| 198 : | if ((r = malloc(size+64))==NULL) { | ||
| 199 : | perror(progname); | ||
| 200 : | exit(1); | ||
| 201 : | } | ||
| 202 : | r = (Address)((((Cell)r)+(sizeof(Float)-1))&(-sizeof(Float))); | ||
| 203 : | if (debug) | ||
| 204 : | fprintf(stderr, "malloc succeeds, address=$%lx\n", (long)r); | ||
| 205 : | return r; | ||
| 206 : | } | ||
| 207 : | |||
| 208 : | anton | 1.1 | Address my_alloc(Cell size) |
| 209 : | { | ||
| 210 : | jwilke | 1.5 | #if HAVE_MMAP |
| 211 : | anton | 1.1 | static Address next_address=0; |
| 212 : | Address r; | ||
| 213 : | |||
| 214 : | #if defined(MAP_ANON) | ||
| 215 : | if (debug) | ||
| 216 : | fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_ANON, ...); ", (long)next_address, (long)size); | ||
| 217 : | r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, -1, 0); | ||
| 218 : | #else /* !defined(MAP_ANON) */ | ||
| 219 : | anton | 1.17 | /* Ultrix (at least) does not define MAP_FILE and MAP_PRIVATE (both are |
| 220 : | apparently defaults) */ | ||
| 221 : | anton | 1.1 | #ifndef MAP_FILE |
| 222 : | # define MAP_FILE 0 | ||
| 223 : | #endif | ||
| 224 : | #ifndef MAP_PRIVATE | ||
| 225 : | # define MAP_PRIVATE 0 | ||
| 226 : | #endif | ||
| 227 : | static int dev_zero=-1; | ||
| 228 : | |||
| 229 : | if (dev_zero == -1) | ||
| 230 : | dev_zero = open("/dev/zero", O_RDONLY); | ||
| 231 : | if (dev_zero == -1) { | ||
| 232 : | r = (Address)-1; | ||
| 233 : | if (debug) | ||
| 234 : | fprintf(stderr, "open(\"/dev/zero\"...) failed (%s), no mmap; ", | ||
| 235 : | strerror(errno)); | ||
| 236 : | } else { | ||
| 237 : | if (debug) | ||
| 238 : | fprintf(stderr,"try mmap($%lx, $%lx, ..., MAP_FILE, dev_zero, ...); ", (long)next_address, (long)size); | ||
| 239 : | r=mmap(next_address, size, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_FILE|MAP_PRIVATE, dev_zero, 0); | ||
| 240 : | } | ||
| 241 : | #endif /* !defined(MAP_ANON) */ | ||
| 242 : | |||
| 243 : | if (r != (Address)-1) { | ||
| 244 : | if (debug) | ||
| 245 : | fprintf(stderr, "success, address=$%lx\n", (long) r); | ||
| 246 : | if (pagesize != 0) | ||
| 247 : | next_address = (Address)(((((Cell)r)+size-1)&-pagesize)+2*pagesize); /* leave one page unmapped */ | ||
| 248 : | return r; | ||
| 249 : | } | ||
| 250 : | if (debug) | ||
| 251 : | fprintf(stderr, "failed: %s\n", strerror(errno)); | ||
| 252 : | #endif /* HAVE_MMAP */ | ||
| 253 : | anton | 1.3 | /* use malloc as fallback */ |
| 254 : | return verbose_malloc(size); | ||
| 255 : | anton | 1.1 | } |
| 256 : | |||
| 257 : | anton | 1.3 | #if (defined(mips) && !defined(INDIRECT_THREADED)) |
| 258 : | /* the 256MB jump restriction on the MIPS architecture makes the | ||
| 259 : | combination of direct threading and mmap unsafe. */ | ||
| 260 : | #define dict_alloc(size) verbose_malloc(size) | ||
| 261 : | #else | ||
| 262 : | #define dict_alloc(size) my_alloc(size) | ||
| 263 : | #endif | ||
| 264 : | |||
| 265 : | pazsan | 1.10 | void set_stack_sizes(ImageHeader * header) |
| 266 : | { | ||
| 267 : | if (dictsize==0) | ||
| 268 : | dictsize = header->dict_size; | ||
| 269 : | if (dsize==0) | ||
| 270 : | dsize = header->data_stack_size; | ||
| 271 : | if (rsize==0) | ||
| 272 : | rsize = header->return_stack_size; | ||
| 273 : | if (fsize==0) | ||
| 274 : | fsize = header->fp_stack_size; | ||
| 275 : | if (lsize==0) | ||
| 276 : | lsize = header->locals_stack_size; | ||
| 277 : | dictsize=maxaligned(dictsize); | ||
| 278 : | dsize=maxaligned(dsize); | ||
| 279 : | rsize=maxaligned(rsize); | ||
| 280 : | lsize=maxaligned(lsize); | ||
| 281 : | fsize=maxaligned(fsize); | ||
| 282 : | } | ||
| 283 : | |||
| 284 : | void alloc_stacks(ImageHeader * header) | ||
| 285 : | { | ||
| 286 : | header->dict_size=dictsize; | ||
| 287 : | header->data_stack_size=dsize; | ||
| 288 : | header->fp_stack_size=fsize; | ||
| 289 : | header->return_stack_size=rsize; | ||
| 290 : | header->locals_stack_size=lsize; | ||
| 291 : | |||
| 292 : | header->data_stack_base=my_alloc(dsize); | ||
| 293 : | header->fp_stack_base=my_alloc(fsize); | ||
| 294 : | header->return_stack_base=my_alloc(rsize); | ||
| 295 : | header->locals_stack_base=my_alloc(lsize); | ||
| 296 : | } | ||
| 297 : | |||
| 298 : | pazsan | 1.11 | int go_forth(Address image, int stack, Cell *entries) |
| 299 : | { | ||
| 300 : | Cell *sp=(Cell*)(((ImageHeader *)image)->data_stack_base + dsize); | ||
| 301 : | Float *fp=(Float *)(((ImageHeader *)image)->fp_stack_base + fsize); | ||
| 302 : | Cell *rp=(Cell *)(((ImageHeader *)image)->return_stack_base + rsize); | ||
| 303 : | Address lp=((ImageHeader *)image)->locals_stack_base + lsize; | ||
| 304 : | Xt *ip=(Xt *)(((ImageHeader *)image)->boot_entry); | ||
| 305 : | pazsan | 1.13 | #ifdef SYSSIGNALS |
| 306 : | pazsan | 1.11 | int throw_code; |
| 307 : | pazsan | 1.13 | #endif |
| 308 : | pazsan | 1.11 | |
| 309 : | /* ensure that the cached elements (if any) are accessible */ | ||
| 310 : | IF_TOS(sp--); | ||
| 311 : | IF_FTOS(fp--); | ||
| 312 : | |||
| 313 : | for(;stack>0;stack--) | ||
| 314 : | *--sp=entries[stack-1]; | ||
| 315 : | |||
| 316 : | pazsan | 1.14 | #if !defined(MSDOS) && !defined(SHARC) && !defined(_WIN32) && !defined(__EMX__) |
| 317 : | pazsan | 1.11 | get_winsize(); |
| 318 : | #endif | ||
| 319 : | |||
| 320 : | pazsan | 1.13 | #ifdef SYSSIGNALS |
| 321 : | pazsan | 1.11 | install_signal_handlers(); /* right place? */ |
| 322 : | |||
| 323 : | if ((throw_code=setjmp(throw_jmp_buf))) { | ||
| 324 : | static Cell signal_data_stack[8]; | ||
| 325 : | static Cell signal_return_stack[8]; | ||
| 326 : | static Float signal_fp_stack[1]; | ||
| 327 : | pazsan | 1.13 | |
| 328 : | pazsan | 1.11 | signal_data_stack[7]=throw_code; |
| 329 : | |||
| 330 : | return((int)engine(((ImageHeader *)image)->throw_entry,signal_data_stack+7, | ||
| 331 : | signal_return_stack+8,signal_fp_stack,0)); | ||
| 332 : | } | ||
| 333 : | pazsan | 1.13 | #endif |
| 334 : | pazsan | 1.11 | |
| 335 : | return((int)engine(ip,sp,rp,fp,lp)); | ||
| 336 : | } | ||
| 337 : | |||
| 338 : | #ifndef INCLUDE_IMAGE | ||
| 339 : | anton | 1.1 | Address loader(FILE *imagefile, char* filename) |
| 340 : | /* returns the address of the image proper (after the preamble) */ | ||
| 341 : | { | ||
| 342 : | ImageHeader header; | ||
| 343 : | Address image; | ||
| 344 : | Address imp; /* image+preamble */ | ||
| 345 : | anton | 1.17 | Char magic[8]; |
| 346 : | char magic7; /* size byte of magic number */ | ||
| 347 : | anton | 1.1 | Cell preamblesize=0; |
| 348 : | Label *symbols = engine(0,0,0,0,0); | ||
| 349 : | pazsan | 1.6 | Cell data_offset = offset_image ? 56*sizeof(Cell) : 0; |
| 350 : | anton | 1.1 | UCell check_sum; |
| 351 : | static char* endianstring[]= { "big","little" }; | ||
| 352 : | pazsan | 1.15 | Cell ausize = ((RELINFOBITS == 8) ? 0 : |
| 353 : | (RELINFOBITS == 16) ? 1 : | ||
| 354 : | (RELINFOBITS == 32) ? 2 : 3); | ||
| 355 : | Cell charsize = ((sizeof(Char) == 1) ? 0 : | ||
| 356 : | (sizeof(Char) == 2) ? 1 : | ||
| 357 : | (sizeof(Char) == 4) ? 2 : 3) + ausize; | ||
| 358 : | Cell cellsize = ((sizeof(Cell) == 1) ? 0 : | ||
| 359 : | (sizeof(Cell) == 2) ? 1 : | ||
| 360 : | (sizeof(Cell) == 4) ? 2 : 3) + ausize; | ||
| 361 : | anton | 1.17 | |
| 362 : | anton | 1.1 | |
| 363 : | #ifndef DOUBLY_INDIRECT | ||
| 364 : | check_sum = checksum(symbols); | ||
| 365 : | #else /* defined(DOUBLY_INDIRECT) */ | ||
| 366 : | check_sum = (UCell)symbols; | ||
| 367 : | #endif /* defined(DOUBLY_INDIRECT) */ | ||
| 368 : | pazsan | 1.10 | |
| 369 : | do { | ||
| 370 : | if(fread(magic,sizeof(Char),8,imagefile) < 8) { | ||
| 371 : | pazsan | 1.15 | fprintf(stderr,"%s: image %s doesn't seem to be a Gforth (>=0.4) image.\n", |
| 372 : | pazsan | 1.10 | progname, filename); |
| 373 : | exit(1); | ||
| 374 : | anton | 1.1 | } |
| 375 : | pazsan | 1.10 | preamblesize+=8; |
| 376 : | pazsan | 1.15 | } while(memcmp(magic,"Gforth2",7)); |
| 377 : | anton | 1.17 | magic7 = magic[7]; |
| 378 : | anton | 1.1 | if (debug) { |
| 379 : | anton | 1.17 | magic[7]='\0'; |
| 380 : | fprintf(stderr,"Magic found: %s $%x\n", magic, magic7); | ||
| 381 : | anton | 1.1 | } |
| 382 : | |||
| 383 : | anton | 1.17 | if(magic7 != (ausize << 5) + (charsize << 3) + (cellsize << 1) + |
| 384 : | anton | 1.1 | #ifdef WORDS_BIGENDIAN |
| 385 : | pazsan | 1.15 | 0 |
| 386 : | anton | 1.1 | #else |
| 387 : | pazsan | 1.15 | 1 |
| 388 : | anton | 1.1 | #endif |
| 389 : | ) | ||
| 390 : | pazsan | 1.15 | { fprintf(stderr,"This image is %d bit cell, %d bit char, %d bit address unit %s-endian,\n" |
| 391 : | "whereas the machine is %d bit cell, %d bit char, %d bit address unit, %s-endian.\n", | ||
| 392 : | anton | 1.17 | (1<<((magic7>>1)&3))*8, |
| 393 : | (1<<((magic7>>3)&3))*8, | ||
| 394 : | (1<<((magic7>>5)&3))*8, | ||
| 395 : | endianstring[magic7&1], | ||
| 396 : | pazsan | 1.15 | (1<<cellsize)*8, |
| 397 : | (1<<charsize)*8, | ||
| 398 : | (1<<ausize)*8, | ||
| 399 : | endianstring[ | ||
| 400 : | anton | 1.1 | #ifdef WORDS_BIGENDIAN |
| 401 : | 0 | ||
| 402 : | #else | ||
| 403 : | 1 | ||
| 404 : | #endif | ||
| 405 : | ]); | ||
| 406 : | exit(-2); | ||
| 407 : | }; | ||
| 408 : | |||
| 409 : | fread((void *)&header,sizeof(ImageHeader),1,imagefile); | ||
| 410 : | pazsan | 1.10 | |
| 411 : | set_stack_sizes(&header); | ||
| 412 : | anton | 1.1 | |
| 413 : | #if HAVE_GETPAGESIZE | ||
| 414 : | pagesize=getpagesize(); /* Linux/GNU libc offers this */ | ||
| 415 : | #elif HAVE_SYSCONF && defined(_SC_PAGESIZE) | ||
| 416 : | pagesize=sysconf(_SC_PAGESIZE); /* POSIX.4 */ | ||
| 417 : | #elif PAGESIZE | ||
| 418 : | pagesize=PAGESIZE; /* in limits.h according to Gallmeister's POSIX.4 book */ | ||
| 419 : | #endif | ||
| 420 : | if (debug) | ||
| 421 : | jwilke | 1.5 | fprintf(stderr,"pagesize=%ld\n",(unsigned long) pagesize); |
| 422 : | anton | 1.1 | |
| 423 : | anton | 1.3 | image = dict_alloc(preamblesize+dictsize+data_offset)+data_offset; |
| 424 : | anton | 1.1 | rewind(imagefile); /* fseek(imagefile,0L,SEEK_SET); */ |
| 425 : | if (clear_dictionary) | ||
| 426 : | pazsan | 1.10 | memset(image, 0, dictsize); |
| 427 : | fread(image, 1, preamblesize+header.image_size, imagefile); | ||
| 428 : | anton | 1.1 | imp=image+preamblesize; |
| 429 : | if(header.base==0) { | ||
| 430 : | Cell reloc_size=((header.image_size-1)/sizeof(Cell))/8+1; | ||
| 431 : | char reloc_bits[reloc_size]; | ||
| 432 : | pazsan | 1.10 | fread(reloc_bits, 1, reloc_size, imagefile); |
| 433 : | relocate((Cell *)imp, reloc_bits, header.image_size, symbols); | ||
| 434 : | anton | 1.1 | #if 0 |
| 435 : | { /* let's see what the relocator did */ | ||
| 436 : | FILE *snapshot=fopen("snapshot.fi","wb"); | ||
| 437 : | fwrite(image,1,imagesize,snapshot); | ||
| 438 : | fclose(snapshot); | ||
| 439 : | } | ||
| 440 : | #endif | ||
| 441 : | } | ||
| 442 : | else if(header.base!=imp) { | ||
| 443 : | fprintf(stderr,"%s: Cannot load nonrelocatable image (compiled for address $%lx) at address $%lx\n", | ||
| 444 : | progname, (unsigned long)header.base, (unsigned long)imp); | ||
| 445 : | exit(1); | ||
| 446 : | } | ||
| 447 : | if (header.checksum==0) | ||
| 448 : | ((ImageHeader *)imp)->checksum=check_sum; | ||
| 449 : | else if (header.checksum != check_sum) { | ||
| 450 : | fprintf(stderr,"%s: Checksum of image ($%lx) does not match the executable ($%lx)\n", | ||
| 451 : | progname, (unsigned long)(header.checksum),(unsigned long)check_sum); | ||
| 452 : | exit(1); | ||
| 453 : | } | ||
| 454 : | fclose(imagefile); | ||
| 455 : | |||
| 456 : | pazsan | 1.10 | alloc_stacks((ImageHeader *)imp); |
| 457 : | anton | 1.1 | |
| 458 : | CACHE_FLUSH(imp, header.image_size); | ||
| 459 : | |||
| 460 : | return imp; | ||
| 461 : | } | ||
| 462 : | |||
| 463 : | int onlypath(char *file) | ||
| 464 : | pazsan | 1.10 | { |
| 465 : | int i; | ||
| 466 : | anton | 1.1 | i=strlen(file); |
| 467 : | pazsan | 1.10 | while (i) { |
| 468 : | if (file[i]=='\\' || file[i]=='/') break; | ||
| 469 : | i--; | ||
| 470 : | } | ||
| 471 : | return i; | ||
| 472 : | anton | 1.1 | } |
| 473 : | |||
| 474 : | FILE *openimage(char *fullfilename) | ||
| 475 : | pazsan | 1.10 | { |
| 476 : | FILE *image_file; | ||
| 477 : | |||
| 478 : | anton | 1.1 | image_file=fopen(fullfilename,"rb"); |
| 479 : | if (image_file!=NULL && debug) | ||
| 480 : | pazsan | 1.10 | fprintf(stderr, "Opened image file: %s\n", fullfilename); |
| 481 : | return image_file; | ||
| 482 : | anton | 1.1 | } |
| 483 : | |||
| 484 : | FILE *checkimage(char *path, int len, char *imagename) | ||
| 485 : | pazsan | 1.10 | { |
| 486 : | int dirlen=len; | ||
| 487 : | anton | 1.1 | char fullfilename[dirlen+strlen(imagename)+2]; |
| 488 : | pazsan | 1.10 | |
| 489 : | anton | 1.1 | memcpy(fullfilename, path, dirlen); |
| 490 : | if (fullfilename[dirlen-1]!='/') | ||
| 491 : | fullfilename[dirlen++]='/'; | ||
| 492 : | strcpy(fullfilename+dirlen,imagename); | ||
| 493 : | pazsan | 1.10 | return openimage(fullfilename); |
| 494 : | anton | 1.1 | } |
| 495 : | |||
| 496 : | pazsan | 1.10 | FILE * open_image_file(char * imagename, char * path) |
| 497 : | anton | 1.1 | { |
| 498 : | pazsan | 1.10 | FILE * image_file=NULL; |
| 499 : | |||
| 500 : | if(strchr(imagename, '/')==NULL) { | ||
| 501 : | /* first check the directory where the exe file is in !! 01may97jaw */ | ||
| 502 : | if (onlypath(progname)) | ||
| 503 : | image_file=checkimage(progname, onlypath(progname), imagename); | ||
| 504 : | if (!image_file) | ||
| 505 : | do { | ||
| 506 : | char *pend=strchr(path, PATHSEP); | ||
| 507 : | if (pend==NULL) | ||
| 508 : | pend=path+strlen(path); | ||
| 509 : | if (strlen(path)==0) break; | ||
| 510 : | image_file=checkimage(path, pend-path, imagename); | ||
| 511 : | path=pend+(*pend==PATHSEP); | ||
| 512 : | } while (image_file==NULL); | ||
| 513 : | } else { | ||
| 514 : | image_file=openimage(imagename); | ||
| 515 : | } | ||
| 516 : | anton | 1.1 | |
| 517 : | pazsan | 1.10 | if (!image_file) { |
| 518 : | fprintf(stderr,"%s: cannot open image file %s in path %s for reading\n", | ||
| 519 : | progname, imagename, path); | ||
| 520 : | exit(1); | ||
| 521 : | anton | 1.7 | } |
| 522 : | |||
| 523 : | pazsan | 1.10 | return image_file; |
| 524 : | } | ||
| 525 : | pazsan | 1.11 | #endif |
| 526 : | |||
| 527 : | #ifdef HAS_OS | ||
| 528 : | UCell convsize(char *s, UCell elemsize) | ||
| 529 : | /* converts s of the format [0-9]+[bekMGT]? (e.g. 25k) into the number | ||
| 530 : | of bytes. the letter at the end indicates the unit, where e stands | ||
| 531 : | for the element size. default is e */ | ||
| 532 : | { | ||
| 533 : | char *endp; | ||
| 534 : | UCell n,m; | ||
| 535 : | |||
| 536 : | m = elemsize; | ||
| 537 : | n = strtoul(s,&endp,0); | ||
| 538 : | if (endp!=NULL) { | ||
| 539 : | if (strcmp(endp,"b")==0) | ||
| 540 : | m=1; | ||
| 541 : | else if (strcmp(endp,"k")==0) | ||
| 542 : | m=1024; | ||
| 543 : | else if (strcmp(endp,"M")==0) | ||
| 544 : | m=1024*1024; | ||
| 545 : | else if (strcmp(endp,"G")==0) | ||
| 546 : | m=1024*1024*1024; | ||
| 547 : | else if (strcmp(endp,"T")==0) { | ||
| 548 : | #if (SIZEOF_CHAR_P > 4) | ||
| 549 : | m=1024*1024*1024*1024; | ||
| 550 : | #else | ||
| 551 : | fprintf(stderr,"%s: size specification \"%s\" too large for this machine\n", progname, endp); | ||
| 552 : | exit(1); | ||
| 553 : | #endif | ||
| 554 : | } else if (strcmp(endp,"e")!=0 && strcmp(endp,"")!=0) { | ||
| 555 : | fprintf(stderr,"%s: cannot grok size specification %s: invalid unit \"%s\"\n", progname, s, endp); | ||
| 556 : | exit(1); | ||
| 557 : | } | ||
| 558 : | } | ||
| 559 : | return n*m; | ||
| 560 : | } | ||
| 561 : | pazsan | 1.10 | |
| 562 : | void gforth_args(int argc, char ** argv, char ** path, char ** imagename) | ||
| 563 : | { | ||
| 564 : | int c; | ||
| 565 : | |||
| 566 : | anton | 1.1 | opterr=0; |
| 567 : | while (1) { | ||
| 568 : | int option_index=0; | ||
| 569 : | static struct option opts[] = { | ||
| 570 : | {"image-file", required_argument, NULL, 'i'}, | ||
| 571 : | {"dictionary-size", required_argument, NULL, 'm'}, | ||
| 572 : | {"data-stack-size", required_argument, NULL, 'd'}, | ||
| 573 : | {"return-stack-size", required_argument, NULL, 'r'}, | ||
| 574 : | {"fp-stack-size", required_argument, NULL, 'f'}, | ||
| 575 : | {"locals-stack-size", required_argument, NULL, 'l'}, | ||
| 576 : | {"path", required_argument, NULL, 'p'}, | ||
| 577 : | {"version", no_argument, NULL, 'v'}, | ||
| 578 : | {"help", no_argument, NULL, 'h'}, | ||
| 579 : | /* put something != 0 into offset_image */ | ||
| 580 : | {"offset-image", no_argument, &offset_image, 1}, | ||
| 581 : | {"no-offset-im", no_argument, &offset_image, 0}, | ||
| 582 : | {"clear-dictionary", no_argument, &clear_dictionary, 1}, | ||
| 583 : | anton | 1.4 | {"die-on-signal", no_argument, &die_on_signal, 1}, |
| 584 : | anton | 1.1 | {"debug", no_argument, &debug, 1}, |
| 585 : | {0,0,0,0} | ||
| 586 : | /* no-init-file, no-rc? */ | ||
| 587 : | }; | ||
| 588 : | |||
| 589 : | c = getopt_long(argc, argv, "+i:m:d:r:f:l:p:vh", opts, &option_index); | ||
| 590 : | |||
| 591 : | if (c==EOF) | ||
| 592 : | break; | ||
| 593 : | if (c=='?') { | ||
| 594 : | optind--; | ||
| 595 : | break; | ||
| 596 : | } | ||
| 597 : | switch (c) { | ||
| 598 : | pazsan | 1.10 | case 'i': *imagename = optarg; break; |
| 599 : | anton | 1.1 | case 'm': dictsize = convsize(optarg,sizeof(Cell)); break; |
| 600 : | case 'd': dsize = convsize(optarg,sizeof(Cell)); break; | ||
| 601 : | case 'r': rsize = convsize(optarg,sizeof(Cell)); break; | ||
| 602 : | case 'f': fsize = convsize(optarg,sizeof(Float)); break; | ||
| 603 : | case 'l': lsize = convsize(optarg,sizeof(Cell)); break; | ||
| 604 : | pazsan | 1.10 | case 'p': *path = optarg; break; |
| 605 : | anton | 1.8 | case 'v': fprintf(stderr, "gforth %s\n", VERSION); exit(0); |
| 606 : | anton | 1.1 | case 'h': |
| 607 : | fprintf(stderr, "Usage: %s [engine options] [image arguments]\n\ | ||
| 608 : | Engine Options:\n\ | ||
| 609 : | pazsan | 1.10 | --clear-dictionary Initialize the dictionary with 0 bytes\n\ |
| 610 : | -d SIZE, --data-stack-size=SIZE Specify data stack size\n\ | ||
| 611 : | --debug Print debugging information during startup\n\ | ||
| 612 : | --die-on-signal exit instead of CATCHing some signals\n\ | ||
| 613 : | -f SIZE, --fp-stack-size=SIZE Specify floating point stack size\n\ | ||
| 614 : | -h, --help Print this message and exit\n\ | ||
| 615 : | -i FILE, --image-file=FILE Use image FILE instead of `gforth.fi'\n\ | ||
| 616 : | -l SIZE, --locals-stack-size=SIZE Specify locals stack size\n\ | ||
| 617 : | -m SIZE, --dictionary-size=SIZE Specify Forth dictionary size\n\ | ||
| 618 : | --no-offset-im Load image at normal position\n\ | ||
| 619 : | --offset-image Load image at a different position\n\ | ||
| 620 : | -p PATH, --path=PATH Search path for finding image and sources\n\ | ||
| 621 : | -r SIZE, --return-stack-size=SIZE Specify return stack size\n\ | ||
| 622 : | -v, --version Print version and exit\n\ | ||
| 623 : | anton | 1.1 | SIZE arguments consist of an integer followed by a unit. The unit can be\n\ |
| 624 : | pazsan | 1.10 | `b' (byte), `e' (element; default), `k' (KB), `M' (MB), `G' (GB) or `T' (TB).\n", |
| 625 : | argv[0]); | ||
| 626 : | optind--; | ||
| 627 : | return; | ||
| 628 : | exit(0); | ||
| 629 : | anton | 1.1 | } |
| 630 : | } | ||
| 631 : | pazsan | 1.10 | } |
| 632 : | pazsan | 1.11 | #endif |
| 633 : | pazsan | 1.10 | |
| 634 : | #ifdef INCLUDE_IMAGE | ||
| 635 : | extern Cell image[]; | ||
| 636 : | extern const char reloc_bits[]; | ||
| 637 : | #endif | ||
| 638 : | |||
| 639 : | int main(int argc, char **argv, char **env) | ||
| 640 : | { | ||
| 641 : | char *path = getenv("GFORTHPATH") ? : DEFAULTPATH; | ||
| 642 : | pazsan | 1.13 | #ifndef INCLUDE_IMAGE |
| 643 : | pazsan | 1.10 | char *imagename="gforth.fi"; |
| 644 : | FILE *image_file; | ||
| 645 : | Address image; | ||
| 646 : | #endif | ||
| 647 : | int retvalue; | ||
| 648 : | |||
| 649 : | #if defined(i386) && defined(ALIGNMENT_CHECK) && !defined(DIRECT_THREADED) | ||
| 650 : | /* turn on alignment checks on the 486. | ||
| 651 : | * on the 386 this should have no effect. */ | ||
| 652 : | __asm__("pushfl; popl %eax; orl $0x40000, %eax; pushl %eax; popfl;"); | ||
| 653 : | /* this is unusable with Linux' libc.4.6.27, because this library is | ||
| 654 : | not alignment-clean; we would have to replace some library | ||
| 655 : | functions (e.g., memcpy) to make it work. Also GCC doesn't try to keep | ||
| 656 : | the stack FP-aligned. */ | ||
| 657 : | #endif | ||
| 658 : | |||
| 659 : | /* buffering of the user output device */ | ||
| 660 : | pazsan | 1.11 | #ifdef _IONBF |
| 661 : | pazsan | 1.10 | if (isatty(fileno(stdout))) { |
| 662 : | fflush(stdout); | ||
| 663 : | setvbuf(stdout,NULL,_IONBF,0); | ||
| 664 : | anton | 1.1 | } |
| 665 : | pazsan | 1.11 | #endif |
| 666 : | anton | 1.1 | |
| 667 : | pazsan | 1.10 | progname = argv[0]; |
| 668 : | |||
| 669 : | pazsan | 1.11 | #ifdef HAS_OS |
| 670 : | pazsan | 1.10 | gforth_args(argc, argv, &path, &imagename); |
| 671 : | pazsan | 1.11 | #endif |
| 672 : | pazsan | 1.10 | |
| 673 : | #ifdef INCLUDE_IMAGE | ||
| 674 : | set_stack_sizes((ImageHeader *)image); | ||
| 675 : | relocate(image, reloc_bits, ((ImageHeader*)&image)->image_size, (Label*)engine(0, 0, 0, 0, 0)); | ||
| 676 : | alloc_stacks((ImageHeader *)image); | ||
| 677 : | #else | ||
| 678 : | image_file = open_image_file(imagename, path); | ||
| 679 : | image = loader(image_file, imagename); | ||
| 680 : | #endif | ||
| 681 : | anton | 1.1 | |
| 682 : | { | ||
| 683 : | pazsan | 1.10 | char path2[strlen(path)+1]; |
| 684 : | anton | 1.1 | char *p1, *p2; |
| 685 : | Cell environ[]= { | ||
| 686 : | (Cell)argc-(optind-1), | ||
| 687 : | (Cell)(argv+(optind-1)), | ||
| 688 : | pazsan | 1.10 | (Cell)strlen(path), |
| 689 : | anton | 1.1 | (Cell)path2}; |
| 690 : | argv[optind-1] = progname; | ||
| 691 : | /* | ||
| 692 : | for (i=0; i<environ[0]; i++) | ||
| 693 : | printf("%s\n", ((char **)(environ[1]))[i]); | ||
| 694 : | */ | ||
| 695 : | /* make path OS-independent by replacing path separators with NUL */ | ||
| 696 : | pazsan | 1.10 | for (p1=path, p2=path2; *p1!='\0'; p1++, p2++) |
| 697 : | anton | 1.1 | if (*p1==PATHSEP) |
| 698 : | *p2 = '\0'; | ||
| 699 : | else | ||
| 700 : | *p2 = *p1; | ||
| 701 : | *p2='\0'; | ||
| 702 : | pazsan | 1.10 | retvalue = go_forth(image, 4, environ); |
| 703 : | anton | 1.1 | deprep_terminal(); |
| 704 : | } | ||
| 705 : | pazsan | 1.13 | return retvalue; |
| 706 : | anton | 1.1 | } |
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