1 /******************************************************************* 2 s y s d e p . h 3 ** Forth Inspired Command Language 4 ** Author: John Sadler (john_sadler@alum.mit.edu) 5 ** Created: 16 Oct 1997 6 ** Ficl system dependent types and prototypes... 7 ** 8 ** Note: Ficl also depends on the use of "assert" when 9 ** FICL_ROBUST is enabled. This may require some consideration 10 ** in firmware systems since assert often 11 ** assumes stderr/stdout. 12 ** $Id: sysdep.h,v 1.6 2001-04-26 21:41:55-07 jsadler Exp jsadler $ 13 *******************************************************************/ 14 /* 15 ** Copyright (c) 1997-2001 John Sadler (john_sadler@alum.mit.edu) 16 ** All rights reserved. 17 ** 18 ** Get the latest Ficl release at http://ficl.sourceforge.net 19 ** 20 ** L I C E N S E and D I S C L A I M E R 21 ** 22 ** Redistribution and use in source and binary forms, with or without 23 ** modification, are permitted provided that the following conditions 24 ** are met: 25 ** 1. Redistributions of source code must retain the above copyright 26 ** notice, this list of conditions and the following disclaimer. 27 ** 2. Redistributions in binary form must reproduce the above copyright 28 ** notice, this list of conditions and the following disclaimer in the 29 ** documentation and/or other materials provided with the distribution. 30 ** 31 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 32 ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 33 ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 34 ** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 35 ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 ** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 ** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 39 ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 40 ** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 41 ** SUCH DAMAGE. 42 ** 43 ** I am interested in hearing from anyone who uses ficl. If you have 44 ** a problem, a success story, a defect, an enhancement request, or 45 ** if you would like to contribute to the ficl release, please send 46 ** contact me by email at the address above. 47 ** 48 ** $Id: sysdep.h,v 1.6 2001-04-26 21:41:55-07 jsadler Exp jsadler $ 49 ** $FreeBSD$ 50 */ 51 52 #if !defined (__SYSDEP_H__) 53 #define __SYSDEP_H__ 54 55 #include <sys/types.h> 56 57 #include <stddef.h> /* size_t, NULL */ 58 #include <setjmp.h> 59 #include <assert.h> 60 61 #if !defined IGNORE /* Macro to silence unused param warnings */ 62 #define IGNORE(x) &x 63 #endif 64 65 /* 66 ** TRUE and FALSE for C boolean operations, and 67 ** portable 32 bit types for CELLs 68 ** 69 */ 70 #if !defined TRUE 71 #define TRUE 1 72 #endif 73 #if !defined FALSE 74 #define FALSE 0 75 #endif 76 77 78 /* 79 ** System dependent data type declarations... 80 */ 81 #if !defined INT32 82 #define INT32 int 83 #endif 84 85 #if !defined UNS32 86 #define UNS32 unsigned int 87 #endif 88 89 #if !defined UNS16 90 #define UNS16 unsigned short 91 #endif 92 93 #if !defined UNS8 94 #define UNS8 unsigned char 95 #endif 96 97 #if !defined NULL 98 #define NULL ((void *)0) 99 #endif 100 101 /* 102 ** FICL_UNS and FICL_INT must have the same size as a void* on 103 ** the target system. A CELL is a union of void*, FICL_UNS, and 104 ** FICL_INT. 105 ** (11/2000: same for FICL_FLOAT) 106 */ 107 #if !defined FICL_INT 108 #define FICL_INT INT32 109 #endif 110 111 #if !defined FICL_UNS 112 #define FICL_UNS UNS32 113 #endif 114 115 #if !defined FICL_FLOAT 116 #define FICL_FLOAT float 117 #endif 118 119 /* 120 ** Ficl presently supports values of 32 and 64 for BITS_PER_CELL 121 */ 122 #if !defined BITS_PER_CELL 123 #define BITS_PER_CELL 32 124 #endif 125 126 #if ((BITS_PER_CELL != 32) && (BITS_PER_CELL != 64)) 127 Error! 128 #endif 129 130 typedef struct 131 { 132 FICL_UNS hi; 133 FICL_UNS lo; 134 } DPUNS; 135 136 typedef struct 137 { 138 FICL_UNS quot; 139 FICL_UNS rem; 140 } UNSQR; 141 142 typedef struct 143 { 144 FICL_INT hi; 145 FICL_INT lo; 146 } DPINT; 147 148 typedef struct 149 { 150 FICL_INT quot; 151 FICL_INT rem; 152 } INTQR; 153 154 155 /* 156 ** B U I L D C O N T R O L S 157 */ 158 159 #if !defined (FICL_MINIMAL) 160 #define FICL_MINIMAL 0 161 #endif 162 #if (FICL_MINIMAL) 163 #define FICL_WANT_SOFTWORDS 0 164 #define FICL_WANT_FILE 0 165 #define FICL_WANT_FLOAT 0 166 #define FICL_WANT_USER 0 167 #define FICL_WANT_LOCALS 0 168 #define FICL_WANT_DEBUGGER 0 169 #define FICL_WANT_OOP 0 170 #define FICL_PLATFORM_EXTEND 0 171 #define FICL_MULTITHREAD 0 172 #define FICL_ROBUST 1 173 #define FICL_EXTENDED_PREFIX 0 174 #endif 175 176 /* 177 ** FICL_PLATFORM_EXTEND 178 ** Includes words defined in ficlCompilePlatform 179 */ 180 #if !defined (FICL_PLATFORM_EXTEND) 181 #define FICL_PLATFORM_EXTEND 1 182 #endif 183 184 /* 185 ** FICL_WANT_FILE 186 ** Includes the FILE and FILE-EXT wordset and associated code. Turn this off if you do not 187 ** have a filesystem! 188 ** Contributed by Larry Hastings 189 */ 190 #if !defined (FICL_WANT_FILE) 191 #define FICL_WANT_FILE 0 192 #endif 193 194 /* 195 ** FICL_WANT_FLOAT 196 ** Includes a floating point stack for the VM, and words to do float operations. 197 ** Contributed by Guy Carver 198 */ 199 #if !defined (FICL_WANT_FLOAT) 200 #define FICL_WANT_FLOAT 0 201 #endif 202 203 /* 204 ** FICL_WANT_DEBUGGER 205 ** Inludes a simple source level debugger 206 */ 207 #if !defined (FICL_WANT_DEBUGGER) 208 #define FICL_WANT_DEBUGGER 1 209 #endif 210 211 /* 212 ** User variables: per-instance variables bound to the VM. 213 ** Kinda like thread-local storage. Could be implemented in a 214 ** VM private dictionary, but I've chosen the lower overhead 215 ** approach of an array of CELLs instead. 216 */ 217 #if !defined FICL_WANT_USER 218 #define FICL_WANT_USER 1 219 #endif 220 221 #if !defined FICL_USER_CELLS 222 #define FICL_USER_CELLS 16 223 #endif 224 225 /* 226 ** FICL_WANT_LOCALS controls the creation of the LOCALS wordset and 227 ** a private dictionary for local variable compilation. 228 */ 229 #if !defined FICL_WANT_LOCALS 230 #define FICL_WANT_LOCALS 1 231 #endif 232 233 /* Max number of local variables per definition */ 234 #if !defined FICL_MAX_LOCALS 235 #define FICL_MAX_LOCALS 16 236 #endif 237 238 /* 239 ** FICL_WANT_OOP 240 ** Inludes object oriented programming support (in softwords) 241 ** OOP support requires locals and user variables! 242 */ 243 #if !(FICL_WANT_LOCALS) || !(FICL_WANT_USER) 244 #if !defined (FICL_WANT_OOP) 245 #define FICL_WANT_OOP 0 246 #endif 247 #endif 248 249 #if !defined (FICL_WANT_OOP) 250 #define FICL_WANT_OOP 1 251 #endif 252 253 /* 254 ** FICL_WANT_SOFTWORDS 255 ** Controls inclusion of all softwords in softcore.c 256 */ 257 #if !defined (FICL_WANT_SOFTWORDS) 258 #define FICL_WANT_SOFTWORDS 1 259 #endif 260 261 /* 262 ** FICL_MULTITHREAD enables dictionary mutual exclusion 263 ** wia the ficlLockDictionary system dependent function. 264 ** Note: this implementation is experimental and poorly 265 ** tested. Further, it's unnecessary unless you really 266 ** intend to have multiple SESSIONS (poor choice of name 267 ** on my part) - that is, threads that modify the dictionary 268 ** at the same time. 269 */ 270 #if !defined FICL_MULTITHREAD 271 #define FICL_MULTITHREAD 0 272 #endif 273 274 /* 275 ** PORTABLE_LONGMULDIV causes ficlLongMul and ficlLongDiv to be 276 ** defined in C in sysdep.c. Use this if you cannot easily 277 ** generate an inline asm definition 278 */ 279 #if !defined (PORTABLE_LONGMULDIV) 280 #define PORTABLE_LONGMULDIV 0 281 #endif 282 283 /* 284 ** INLINE_INNER_LOOP causes the inner interpreter to be inline code 285 ** instead of a function call. This is mainly because MS VC++ 5 286 ** chokes with an internal compiler error on the function version. 287 ** in release mode. Sheesh. 288 */ 289 #if !defined INLINE_INNER_LOOP 290 #if defined _DEBUG 291 #define INLINE_INNER_LOOP 0 292 #else 293 #define INLINE_INNER_LOOP 1 294 #endif 295 #endif 296 297 /* 298 ** FICL_ROBUST enables bounds checking of stacks and the dictionary. 299 ** This will detect stack over and underflows and dictionary overflows. 300 ** Any exceptional condition will result in an assertion failure. 301 ** (As generated by the ANSI assert macro) 302 ** FICL_ROBUST == 1 --> stack checking in the outer interpreter 303 ** FICL_ROBUST == 2 also enables checking in many primitives 304 */ 305 306 #if !defined FICL_ROBUST 307 #define FICL_ROBUST 2 308 #endif 309 310 /* 311 ** FICL_DEFAULT_STACK Specifies the default size (in CELLs) of 312 ** a new virtual machine's stacks, unless overridden at 313 ** create time. 314 */ 315 #if !defined FICL_DEFAULT_STACK 316 #define FICL_DEFAULT_STACK 128 317 #endif 318 319 /* 320 ** FICL_DEFAULT_DICT specifies the number of CELLs to allocate 321 ** for the system dictionary by default. The value 322 ** can be overridden at startup time as well. 323 ** FICL_DEFAULT_ENV specifies the number of cells to allot 324 ** for the environment-query dictionary. 325 */ 326 #if !defined FICL_DEFAULT_DICT 327 #define FICL_DEFAULT_DICT 12288 328 #endif 329 330 #if !defined FICL_DEFAULT_ENV 331 #define FICL_DEFAULT_ENV 260 332 #endif 333 334 /* 335 ** FICL_DEFAULT_VOCS specifies the maximum number of wordlists in 336 ** the dictionary search order. See Forth DPANS sec 16.3.3 337 ** (file://dpans16.htm#16.3.3) 338 */ 339 #if !defined FICL_DEFAULT_VOCS 340 #define FICL_DEFAULT_VOCS 16 341 #endif 342 343 /* 344 ** FICL_MAX_PARSE_STEPS controls the size of an array in the FICL_SYSTEM structure 345 ** that stores pointers to parser extension functions. I would never expect to have 346 ** more than 8 of these, so that's the default limit. Too many of these functions 347 ** will probably exact a nasty performance penalty. 348 */ 349 #if !defined FICL_MAX_PARSE_STEPS 350 #define FICL_MAX_PARSE_STEPS 8 351 #endif 352 353 /* 354 ** FICL_EXTENDED_PREFIX enables a bunch of extra prefixes in prefix.c and prefix.fr (if 355 ** included as part of softcore.c) 356 */ 357 #if !defined FICL_EXTENDED_PREFIX 358 #define FICL_EXTENDED_PREFIX 0 359 #endif 360 361 /* 362 ** FICL_ALIGN is the power of two to which the dictionary 363 ** pointer address must be aligned. This value is usually 364 ** either 1 or 2, depending on the memory architecture 365 ** of the target system; 2 is safe on any 16 or 32 bit 366 ** machine. 3 would be appropriate for a 64 bit machine. 367 */ 368 #if !defined FICL_ALIGN 369 #define FICL_ALIGN 2 370 #define FICL_ALIGN_ADD ((1 << FICL_ALIGN) - 1) 371 #endif 372 373 /* 374 ** System dependent routines -- 375 ** edit the implementations in sysdep.c to be compatible 376 ** with your runtime environment... 377 ** ficlTextOut sends a NULL terminated string to the 378 ** default output device - used for system error messages 379 ** ficlMalloc and ficlFree have the same semantics as malloc and free 380 ** in standard C 381 ** ficlLongMul multiplies two UNS32s and returns a 64 bit unsigned 382 ** product 383 ** ficlLongDiv divides an UNS64 by an UNS32 and returns UNS32 quotient 384 ** and remainder 385 */ 386 struct vm; 387 void ficlTextOut(struct vm *pVM, char *msg, int fNewline); 388 void *ficlMalloc (size_t size); 389 void ficlFree (void *p); 390 void *ficlRealloc(void *p, size_t size); 391 /* 392 ** Stub function for dictionary access control - does nothing 393 ** by default, user can redefine to guarantee exclusive dict 394 ** access to a single thread for updates. All dict update code 395 ** must be bracketed as follows: 396 ** ficlLockDictionary(TRUE); 397 ** <code that updates dictionary> 398 ** ficlLockDictionary(FALSE); 399 ** 400 ** Returns zero if successful, nonzero if unable to acquire lock 401 ** before timeout (optional - could also block forever) 402 ** 403 ** NOTE: this function must be implemented with lock counting 404 ** semantics: nested calls must behave properly. 405 */ 406 #if FICL_MULTITHREAD 407 int ficlLockDictionary(short fLock); 408 #else 409 #define ficlLockDictionary(x) 0 /* ignore */ 410 #endif 411 412 /* 413 ** 64 bit integer math support routines: multiply two UNS32s 414 ** to get a 64 bit product, & divide the product by an UNS32 415 ** to get an UNS32 quotient and remainder. Much easier in asm 416 ** on a 32 bit CPU than in C, which usually doesn't support 417 ** the double length result (but it should). 418 */ 419 DPUNS ficlLongMul(FICL_UNS x, FICL_UNS y); 420 UNSQR ficlLongDiv(DPUNS q, FICL_UNS y); 421 422 /* 423 ** FICL_HAVE_FTRUNCATE indicates whether the current OS supports 424 ** the ftruncate() function (available on most UNIXes). This 425 ** function is necessary to provide the complete File-Access wordset. 426 */ 427 #if !defined (FICL_HAVE_FTRUNCATE) 428 #define FICL_HAVE_FTRUNCATE 0 429 #endif 430 431 432 #endif /*__SYSDEP_H__*/ 433