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| 1 : | anton | 1.1 | \ libcc.fs foreign function interface implemented using a C compiler |
| 2 : | |||
| 3 : | anton | 1.50 | \ Copyright (C) 2006,2007,2008 Free Software Foundation, Inc. |
| 4 : | anton | 1.1 | |
| 5 : | \ This file is part of Gforth. | ||
| 6 : | |||
| 7 : | \ Gforth is free software; you can redistribute it and/or | ||
| 8 : | \ modify it under the terms of the GNU General Public License | ||
| 9 : | anton | 1.28 | \ as published by the Free Software Foundation, either version 3 |
| 10 : | anton | 1.1 | \ of the License, or (at your option) any later version. |
| 11 : | |||
| 12 : | \ This program is distributed in the hope that it will be useful, | ||
| 13 : | \ but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 : | \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 15 : | \ GNU General Public License for more details. | ||
| 16 : | |||
| 17 : | \ You should have received a copy of the GNU General Public License | ||
| 18 : | anton | 1.28 | \ along with this program. If not, see http://www.gnu.org/licenses/. |
| 19 : | anton | 1.1 | |
| 20 : | |||
| 21 : | \ What this implementation does is this: if it sees a declaration like | ||
| 22 : | |||
| 23 : | anton | 1.2 | \ \ something that tells it that the current library is libc |
| 24 : | anton | 1.6 | \ \c #include <unistd.h> |
| 25 : | anton | 1.2 | \ c-function dlseek lseek n d n -- d |
| 26 : | anton | 1.1 | |
| 27 : | \ it genererates C code similar to the following: | ||
| 28 : | |||
| 29 : | \ #include <gforth.h> | ||
| 30 : | anton | 1.2 | \ #include <unistd.h> |
| 31 : | anton | 1.1 | \ |
| 32 : | anton | 1.2 | \ void gforth_c_lseek_ndn_d(void) |
| 33 : | anton | 1.1 | \ { |
| 34 : | \ Cell *sp = gforth_SP; | ||
| 35 : | \ Float *fp = gforth_FP; | ||
| 36 : | anton | 1.2 | \ long long result; /* longest type in C */ |
| 37 : | \ gforth_ll2d(lseek(sp[3],gforth_d2ll(sp[2],sp[1]),sp[0]),sp[3],sp[2]); | ||
| 38 : | \ gforth_SP = sp+2; | ||
| 39 : | anton | 1.1 | \ } |
| 40 : | |||
| 41 : | \ Then it compiles this code and dynamically links it into the Gforth | ||
| 42 : | \ system (batching and caching are future work). It also dynamically | ||
| 43 : | \ links lseek. Performing DLSEEK then puts the function pointer of | ||
| 44 : | anton | 1.2 | \ the function pointer of gforth_c_lseek_ndn_d on the stack and |
| 45 : | \ calls CALL-C. | ||
| 46 : | |||
| 47 : | anton | 1.7 | \ ToDo: |
| 48 : | |||
| 49 : | \ Batching, caching and lazy evaluation: | ||
| 50 : | |||
| 51 : | \ Batching: | ||
| 52 : | |||
| 53 : | \ New words are deferred, and the corresponding C functions are | ||
| 54 : | \ collected in one file, until the first word is EXECUTEd; then the | ||
| 55 : | \ file is compiled and linked into the system, and the word is | ||
| 56 : | \ resolved. | ||
| 57 : | |||
| 58 : | \ Caching: | ||
| 59 : | |||
| 60 : | \ Instead of compiling all this stuff anew for every execution, we | ||
| 61 : | \ keep the files around and have an index file containing the function | ||
| 62 : | \ names and their corresponding .so files. If the needed wrapper name | ||
| 63 : | \ is already present, it is just linked instead of generating the | ||
| 64 : | \ wrapper again. This is all done by loading the index file(s?), | ||
| 65 : | \ which define words for the wrappers in a separate wordlist. | ||
| 66 : | |||
| 67 : | \ The files are built in .../lib/gforth/$VERSION/libcc/ or | ||
| 68 : | \ ~/.gforth/libcc/$HOST/. | ||
| 69 : | |||
| 70 : | anton | 1.2 | \ other things to do: |
| 71 : | |||
| 72 : | \ c-variable forth-name c-name | ||
| 73 : | \ c-constant forth-name c-name | ||
| 74 : | |||
| 75 : | anton | 1.20 | \ Todo: conversion between function pointers and xts (both directions) |
| 76 : | |||
| 77 : | \ taking an xt and turning it into a function pointer: | ||
| 78 : | |||
| 79 : | \ e.g., assume we have the xt of + and want to create a C function int | ||
| 80 : | \ gforth_callback_plus(int, int), and then pass the pointer to that | ||
| 81 : | \ function: | ||
| 82 : | |||
| 83 : | \ There should be Forth code like this: | ||
| 84 : | \ ] + 0 (bye) | ||
| 85 : | \ Assume that the start of this code is START | ||
| 86 : | |||
| 87 : | \ Now, there should be a C function: | ||
| 88 : | |||
| 89 : | \ int gforth_callback_plus(int p1, int p2) | ||
| 90 : | \ { | ||
| 91 : | \ Cell *sp = gforth_SP; | ||
| 92 : | \ Float *fp = gforth_FP; | ||
| 93 : | \ Float *fp = gforth_FP; | ||
| 94 : | \ Address lp = gforth_LP; | ||
| 95 : | \ sp -= 2; | ||
| 96 : | \ sp[0] = p1; | ||
| 97 : | \ sp[1] = p2; | ||
| 98 : | \ gforth_engine(START, sp, rp, fp, lp); | ||
| 99 : | \ sp += 1; | ||
| 100 : | \ gforth_RP = rp; | ||
| 101 : | \ gforth_SP = sp; | ||
| 102 : | \ gforth_FP = fp; | ||
| 103 : | \ gforth_LP = lp; | ||
| 104 : | \ return sp[0]; | ||
| 105 : | \ } | ||
| 106 : | |||
| 107 : | \ and the pointer to that function is the C function pointer for the XT of +. | ||
| 108 : | |||
| 109 : | \ Future problems: | ||
| 110 : | \ how to combine the Forth code generation with inlining | ||
| 111 : | \ START is not a constant across executions (when caching the C files) | ||
| 112 : | \ Solution: make START a variable, and store into it on startup with dlsym | ||
| 113 : | |||
| 114 : | \ Syntax: | ||
| 115 : | \ callback <rettype> <params> <paramtypes> -- <rettype> | ||
| 116 : | |||
| 117 : | anton | 1.2 | |
| 118 : | \ data structures | ||
| 119 : | |||
| 120 : | anton | 1.10 | \ For every c-function, we have three words: two anonymous words |
| 121 : | \ created by c-function-ft (first time) and c-function-rt (run-time), | ||
| 122 : | \ and a named deferred word. The deferred word first points to the | ||
| 123 : | \ first-time word, then to the run-time word; the run-time word calls | ||
| 124 : | \ the c function. | ||
| 125 : | |||
| 126 : | anton | 1.29 | [ifundef] parse-name |
| 127 : | ' parse-word alias parse-name | ||
| 128 : | [then] | ||
| 129 : | [ifundef] defer! | ||
| 130 : | : defer! ( xt xt-deferred -- ) \ gforth defer-store | ||
| 131 : | \G Changes the @code{defer}red word @var{xt-deferred} to execute @var{xt}. | ||
| 132 : | >body [ has? rom [IF] ] @ [ [THEN] ] ! ; | ||
| 133 : | [then] | ||
| 134 : | |||
| 135 : | \ : delete-file 2drop 0 ; | ||
| 136 : | anton | 1.12 | |
| 137 : | require struct.fs | ||
| 138 : | anton | 1.56 | require mkdir.fs |
| 139 : | anton | 1.12 | |
| 140 : | anton | 1.10 | \ c-function-ft word body: |
| 141 : | anton | 1.12 | struct |
| 142 : | cell% field cff-cfr \ xt of c-function-rt word | ||
| 143 : | cell% field cff-deferred \ xt of c-function deferred word | ||
| 144 : | cell% field cff-lha \ address of the lib-handle for the lib that | ||
| 145 : | \ contains the wrapper function of the word | ||
| 146 : | char% field cff-rtype \ return type | ||
| 147 : | char% field cff-np \ number of parameters | ||
| 148 : | 1 0 field cff-ptypes \ #npar parameter types | ||
| 149 : | \ counted string: c-name | ||
| 150 : | end-struct cff% | ||
| 151 : | |||
| 152 : | anton | 1.14 | variable c-source-file-id \ contains the source file id of the current batch |
| 153 : | 0 c-source-file-id ! | ||
| 154 : | variable lib-handle-addr \ points to the library handle of the current batch. | ||
| 155 : | \ the library handle is 0 if the current | ||
| 156 : | \ batch is not yet compiled. | ||
| 157 : | anton | 1.39 | here 0 , lib-handle-addr ! \ just make sure LIB-HANDLE always works |
| 158 : | anton | 1.23 | 2variable lib-filename \ filename without extension |
| 159 : | 2variable lib-modulename \ basename of the file without extension | ||
| 160 : | anton | 1.44 | 2variable libcc-named-dir-v \ directory for named libcc wrapper libraries |
| 161 : | 0 value libcc-path \ pointer to path of library directories | ||
| 162 : | anton | 1.2 | |
| 163 : | anton | 1.49 | defer replace-rpath ( c-addr1 u1 -- c-addr2 u2 ) |
| 164 : | ' noop is replace-rpath | ||
| 165 : | anton | 1.35 | |
| 166 : | anton | 1.3 | : .nb ( n -- ) |
| 167 : | anton | 1.2 | 0 .r ; |
| 168 : | |||
| 169 : | : const+ ( n1 "name" -- n2 ) | ||
| 170 : | dup constant 1+ ; | ||
| 171 : | |||
| 172 : | anton | 1.10 | : front-string { c-addr1 u1 c-addr2 u2 -- c-addr3 u3 } |
| 173 : | \ insert string c-addr2 u2 in buffer c-addr1 u1; c-addr3 u3 is the | ||
| 174 : | \ remainder of the buffer. | ||
| 175 : | assert( u1 u2 u>= ) | ||
| 176 : | c-addr2 c-addr1 u2 move | ||
| 177 : | c-addr1 u1 u2 /string ; | ||
| 178 : | |||
| 179 : | : front-char { c-addr1 u1 c -- c-addr3 u2 } | ||
| 180 : | \ insert c in buffer c-addr1 u1; c-addr3 u3 is the remainder of | ||
| 181 : | \ the buffer. | ||
| 182 : | assert( u1 0 u> ) | ||
| 183 : | c c-addr1 c! | ||
| 184 : | c-addr1 u1 1 /string ; | ||
| 185 : | |||
| 186 : | anton | 1.15 | : s+ { addr1 u1 addr2 u2 -- addr u } |
| 187 : | u1 u2 + allocate throw { addr } | ||
| 188 : | addr1 addr u1 move | ||
| 189 : | addr2 addr u1 + u2 move | ||
| 190 : | addr u1 u2 + | ||
| 191 : | ; | ||
| 192 : | |||
| 193 : | : append { addr1 u1 addr2 u2 -- addr u } | ||
| 194 : | addr1 u1 u2 + dup { u } resize throw { addr } | ||
| 195 : | addr2 addr u1 + u2 move | ||
| 196 : | addr u ; | ||
| 197 : | |||
| 198 : | anton | 1.6 | \ linked list stuff (should go elsewhere) |
| 199 : | |||
| 200 : | struct | ||
| 201 : | cell% field list-next | ||
| 202 : | 1 0 field list-payload | ||
| 203 : | end-struct list% | ||
| 204 : | |||
| 205 : | : list-insert { node list -- } | ||
| 206 : | list list-next @ node list-next ! | ||
| 207 : | node list list-next ! ; | ||
| 208 : | |||
| 209 : | : list-append { node endlistp -- } | ||
| 210 : | \ insert node at place pointed to by endlistp | ||
| 211 : | node endlistp @ list-insert | ||
| 212 : | node list-next endlistp ! ; | ||
| 213 : | |||
| 214 : | : list-map ( ... list xt -- ... ) | ||
| 215 : | \ xt ( ... node -- ... ) | ||
| 216 : | { xt } begin { node } | ||
| 217 : | node while | ||
| 218 : | node xt execute | ||
| 219 : | node list-next @ | ||
| 220 : | repeat ; | ||
| 221 : | |||
| 222 : | pazsan | 1.59 | 2variable c-libs \ library names in a string (without "lib") |
| 223 : | anton | 1.33 | |
| 224 : | anton | 1.53 | : add-lib ( c-addr u -- ) \ gforth |
| 225 : | anton | 1.33 | \G Add library lib@i{string} to the list of libraries, where |
| 226 : | pazsan | 1.59 | \G @i{string} is represented by @i{c-addr u}. |
| 227 : | c-libs 2@ d0= IF 0 allocate throw 0 c-libs 2! THEN | ||
| 228 : | c-libs 2@ s" -l" append 2swap append c-libs 2! ; | ||
| 229 : | |||
| 230 : | : add-libpath ( c-addr u -- ) \ gforth | ||
| 231 : | \G Add path @i{string} to the list of library search pathes, where | ||
| 232 : | \G @i{string} is represented by @i{c-addr u}. | ||
| 233 : | c-libs 2@ d0= IF 0 allocate throw 0 c-libs 2! THEN | ||
| 234 : | c-libs 2@ s" -L" append 2swap append c-libs 2! ; | ||
| 235 : | anton | 1.33 | |
| 236 : | anton | 1.6 | \ C prefix lines |
| 237 : | |||
| 238 : | \ linked list of longcstrings: [ link | count-cell | characters ] | ||
| 239 : | |||
| 240 : | list% | ||
| 241 : | cell% field c-prefix-count | ||
| 242 : | 1 0 field c-prefix-chars | ||
| 243 : | end-struct c-prefix% | ||
| 244 : | |||
| 245 : | variable c-prefix-lines 0 c-prefix-lines ! | ||
| 246 : | variable c-prefix-lines-end c-prefix-lines c-prefix-lines-end ! | ||
| 247 : | |||
| 248 : | anton | 1.14 | : print-c-prefix-line ( node -- ) |
| 249 : | dup c-prefix-chars swap c-prefix-count @ type cr ; | ||
| 250 : | |||
| 251 : | : print-c-prefix-lines ( -- ) | ||
| 252 : | c-prefix-lines @ ['] print-c-prefix-line list-map ; | ||
| 253 : | |||
| 254 : | anton | 1.61 | : write-c-prefix-line ( c-addr u -- ) |
| 255 : | c-source-file-id @ dup if | ||
| 256 : | write-line throw | ||
| 257 : | else | ||
| 258 : | drop 2drop | ||
| 259 : | then ; | ||
| 260 : | pazsan | 1.60 | |
| 261 : | anton | 1.61 | : save-c-prefix-line1 ( c-addr u -- ) |
| 262 : | 2dup write-c-prefix-line | ||
| 263 : | anton | 1.6 | align here 0 , c-prefix-lines-end list-append ( c-addr u ) |
| 264 : | longstring, ; | ||
| 265 : | |||
| 266 : | anton | 1.61 | defer save-c-prefix-line ( c-addr u -- ) |
| 267 : | ' save-c-prefix-line1 is save-c-prefix-line | ||
| 268 : | |||
| 269 : | anton | 1.18 | : \c ( "rest-of-line" -- ) \ gforth backslash-c |
| 270 : | anton | 1.17 | \G One line of C declarations for the C interface |
| 271 : | anton | 1.6 | -1 parse save-c-prefix-line ; |
| 272 : | |||
| 273 : | anton | 1.19 | s" #include <gforth/" version-string s+ s" /libcc.h>" append ( c-addr u ) |
| 274 : | 2dup save-c-prefix-line drop free throw | ||
| 275 : | anton | 1.5 | |
| 276 : | anton | 1.6 | \ Types (for parsing) |
| 277 : | anton | 1.5 | |
| 278 : | anton | 1.2 | wordlist constant libcc-types |
| 279 : | |||
| 280 : | get-current libcc-types set-current | ||
| 281 : | |||
| 282 : | \ index values | ||
| 283 : | -1 | ||
| 284 : | const+ -- \ end of arguments | ||
| 285 : | const+ n \ integer cell | ||
| 286 : | anton | 1.5 | const+ a \ address cell |
| 287 : | anton | 1.2 | const+ d \ double |
| 288 : | const+ r \ float | ||
| 289 : | const+ func \ C function pointer | ||
| 290 : | const+ void | ||
| 291 : | drop | ||
| 292 : | |||
| 293 : | set-current | ||
| 294 : | |||
| 295 : | : parse-libcc-type ( "libcc-type" -- u ) | ||
| 296 : | parse-name libcc-types search-wordlist 0= -13 and throw execute ; | ||
| 297 : | |||
| 298 : | : parse-function-types ( "{libcc-type}" "--" "libcc-type" -- ) | ||
| 299 : | here 2 chars allot here begin | ||
| 300 : | parse-libcc-type dup 0>= while | ||
| 301 : | c, | ||
| 302 : | repeat | ||
| 303 : | anton | 1.3 | drop here swap - over char+ c! |
| 304 : | parse-libcc-type dup 0< -32 and throw swap c! ; | ||
| 305 : | anton | 1.2 | |
| 306 : | : type-letter ( n -- c ) | ||
| 307 : | pazsan | 1.52 | chars s" nadrfv" drop + c@ ; |
| 308 : | anton | 1.2 | |
| 309 : | \ count-stacks | ||
| 310 : | |||
| 311 : | : count-stacks-n ( fp-change1 sp-change1 -- fp-change2 sp-change2 ) | ||
| 312 : | 1+ ; | ||
| 313 : | |||
| 314 : | anton | 1.5 | : count-stacks-a ( fp-change1 sp-change1 -- fp-change2 sp-change2 ) |
| 315 : | anton | 1.2 | 1+ ; |
| 316 : | |||
| 317 : | : count-stacks-d ( fp-change1 sp-change1 -- fp-change2 sp-change2 ) | ||
| 318 : | 2 + ; | ||
| 319 : | |||
| 320 : | : count-stacks-r ( fp-change1 sp-change1 -- fp-change2 sp-change2 ) | ||
| 321 : | swap 1+ swap ; | ||
| 322 : | |||
| 323 : | : count-stacks-func ( fp-change1 sp-change1 -- fp-change2 sp-change2 ) | ||
| 324 : | 1+ ; | ||
| 325 : | |||
| 326 : | : count-stacks-void ( fp-change1 sp-change1 -- fp-change2 sp-change2 ) | ||
| 327 : | ; | ||
| 328 : | |||
| 329 : | create count-stacks-types | ||
| 330 : | ' count-stacks-n , | ||
| 331 : | anton | 1.5 | ' count-stacks-a , |
| 332 : | anton | 1.2 | ' count-stacks-d , |
| 333 : | ' count-stacks-r , | ||
| 334 : | ' count-stacks-func , | ||
| 335 : | ' count-stacks-void , | ||
| 336 : | |||
| 337 : | : count-stacks ( pars -- fp-change sp-change ) | ||
| 338 : | \ pars is an addr u pair | ||
| 339 : | 0 0 2swap over + swap u+do | ||
| 340 : | anton | 1.3 | i c@ cells count-stacks-types + @ execute |
| 341 : | anton | 1.2 | loop ; |
| 342 : | |||
| 343 : | \ gen-pars | ||
| 344 : | |||
| 345 : | : gen-par-n ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 ) | ||
| 346 : | anton | 1.5 | ." sp[" 1- dup .nb ." ]" ; |
| 347 : | anton | 1.2 | |
| 348 : | anton | 1.5 | : gen-par-a ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 ) |
| 349 : | anton | 1.2 | ." (void *)(" gen-par-n ." )" ; |
| 350 : | |||
| 351 : | : gen-par-d ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 ) | ||
| 352 : | anton | 1.4 | ." gforth_d2ll(" gen-par-n ." ," gen-par-n ." )" ; |
| 353 : | anton | 1.2 | |
| 354 : | : gen-par-r ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 ) | ||
| 355 : | anton | 1.3 | swap 1- tuck ." fp[" .nb ." ]" ; |
| 356 : | anton | 1.2 | |
| 357 : | : gen-par-func ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 ) | ||
| 358 : | anton | 1.5 | gen-par-a ; |
| 359 : | anton | 1.2 | |
| 360 : | : gen-par-void ( fp-depth1 sp-depth1 -- fp-depth2 sp-depth2 ) | ||
| 361 : | -32 throw ; | ||
| 362 : | |||
| 363 : | create gen-par-types | ||
| 364 : | ' gen-par-n , | ||
| 365 : | anton | 1.5 | ' gen-par-a , |
| 366 : | anton | 1.2 | ' gen-par-d , |
| 367 : | ' gen-par-r , | ||
| 368 : | ' gen-par-func , | ||
| 369 : | ' gen-par-void , | ||
| 370 : | |||
| 371 : | : gen-par ( fp-depth1 sp-depth1 partype -- fp-depth2 sp-depth2 ) | ||
| 372 : | anton | 1.3 | cells gen-par-types + @ execute ; |
| 373 : | anton | 1.2 | |
| 374 : | \ the call itself | ||
| 375 : | |||
| 376 : | : gen-wrapped-call { d: pars d: c-name fp-change1 sp-change1 -- } | ||
| 377 : | c-name type ." (" | ||
| 378 : | anton | 1.3 | fp-change1 sp-change1 pars over + swap u+do |
| 379 : | anton | 1.2 | i c@ gen-par |
| 380 : | i 1+ i' < if | ||
| 381 : | ." ," | ||
| 382 : | endif | ||
| 383 : | loop | ||
| 384 : | 2drop ." )" ; | ||
| 385 : | |||
| 386 : | \ calls for various kinds of return values | ||
| 387 : | |||
| 388 : | : gen-wrapped-void ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) | ||
| 389 : | 2dup 2>r gen-wrapped-call 2r> ; | ||
| 390 : | |||
| 391 : | anton | 1.3 | : gen-wrapped-n ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) |
| 392 : | anton | 1.5 | 2dup gen-par-n 2>r ." =" gen-wrapped-call 2r> ; |
| 393 : | anton | 1.3 | |
| 394 : | anton | 1.5 | : gen-wrapped-a ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) |
| 395 : | 2dup gen-par-n 2>r ." =(Cell)" gen-wrapped-call 2r> ; | ||
| 396 : | anton | 1.3 | |
| 397 : | : gen-wrapped-d ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) | ||
| 398 : | ." gforth_ll2d(" gen-wrapped-void | ||
| 399 : | anton | 1.5 | ." ," gen-par-n ." ," gen-par-n ." )" ; |
| 400 : | anton | 1.3 | |
| 401 : | : gen-wrapped-r ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) | ||
| 402 : | anton | 1.30 | 2dup gen-par-r 2>r ." =" gen-wrapped-call 2r> ; |
| 403 : | anton | 1.3 | |
| 404 : | : gen-wrapped-func ( pars c-name fp-change1 sp-change1 -- fp-change sp-change ) | ||
| 405 : | anton | 1.5 | gen-wrapped-a ; |
| 406 : | anton | 1.3 | |
| 407 : | anton | 1.2 | create gen-wrapped-types |
| 408 : | ' gen-wrapped-n , | ||
| 409 : | anton | 1.5 | ' gen-wrapped-a , |
| 410 : | anton | 1.2 | ' gen-wrapped-d , |
| 411 : | ' gen-wrapped-r , | ||
| 412 : | ' gen-wrapped-func , | ||
| 413 : | ' gen-wrapped-void , | ||
| 414 : | |||
| 415 : | : gen-wrapped-stmt ( pars c-name fp-change1 sp-change1 ret -- fp-change sp-change ) | ||
| 416 : | anton | 1.3 | cells gen-wrapped-types + @ execute ; |
| 417 : | anton | 1.2 | |
| 418 : | anton | 1.10 | : wrapper-function-name ( addr -- c-addr u ) |
| 419 : | \ addr points to the return type index of a c-function descriptor | ||
| 420 : | count { r-type } count { d: pars } | ||
| 421 : | pars + count { d: c-name } | ||
| 422 : | s" gforth_c_" { d: prefix } | ||
| 423 : | prefix nip c-name nip + pars nip + 3 + { u } | ||
| 424 : | u allocate throw { c-addr } | ||
| 425 : | c-addr u | ||
| 426 : | prefix front-string c-name front-string '_ front-char | ||
| 427 : | pars bounds u+do | ||
| 428 : | i c@ type-letter front-char | ||
| 429 : | loop | ||
| 430 : | '_ front-char r-type type-letter front-char assert( dup 0= ) | ||
| 431 : | 2drop c-addr u ; | ||
| 432 : | |||
| 433 : | anton | 1.2 | : gen-wrapper-function ( addr -- ) |
| 434 : | \ addr points to the return type index of a c-function descriptor | ||
| 435 : | anton | 1.10 | dup { descriptor } |
| 436 : | anton | 1.13 | count { ret } count 2dup { d: pars } chars + count { d: c-name } |
| 437 : | anton | 1.23 | ." void " lib-modulename 2@ type ." _LTX_" descriptor wrapper-function-name 2dup type drop free throw |
| 438 : | pazsan | 1.54 | .\" (GFORTH_ARGS)\n" |
| 439 : | anton | 1.4 | .\" {\n Cell MAYBE_UNUSED *sp = gforth_SP;\n Float MAYBE_UNUSED *fp = gforth_FP;\n " |
| 440 : | anton | 1.2 | pars c-name 2over count-stacks ret gen-wrapped-stmt .\" ;\n" |
| 441 : | ?dup-if | ||
| 442 : | anton | 1.3 | ." gforth_SP = sp+" .nb .\" ;\n" |
| 443 : | anton | 1.2 | endif |
| 444 : | ?dup-if | ||
| 445 : | anton | 1.3 | ." gforth_FP = fp+" .nb .\" ;\n" |
| 446 : | anton | 1.2 | endif |
| 447 : | anton | 1.3 | .\" }\n" ; |
| 448 : | anton | 1.2 | |
| 449 : | anton | 1.40 | : scan-back { c-addr u1 c -- c-addr u2 } |
| 450 : | \ the last occurence of c in c-addr u1 is at u2-1; if it does not | ||
| 451 : | \ occur, u2=0. | ||
| 452 : | c-addr 1- c-addr u1 + 1- u-do | ||
| 453 : | i c@ c = if | ||
| 454 : | c-addr i over - 1+ unloop exit endif | ||
| 455 : | 1 -loop | ||
| 456 : | c-addr 0 ; | ||
| 457 : | |||
| 458 : | : dirname ( c-addr1 u1 -- c-addr2 u2 ) | ||
| 459 : | \ directory name of the file name c-addr1 u1, including the final "/". | ||
| 460 : | '/ scan-back ; | ||
| 461 : | |||
| 462 : | : basename ( c-addr1 u1 -- c-addr2 u2 ) | ||
| 463 : | \ file name without directory component | ||
| 464 : | 2dup dirname nip /string ; | ||
| 465 : | anton | 1.16 | |
| 466 : | anton | 1.15 | : gen-filename ( x -- c-addr u ) |
| 467 : | anton | 1.35 | \ generates a file basename for lib-handle-addr X |
| 468 : | anton | 1.16 | 0 <<# ['] #s $10 base-execute #> |
| 469 : | anton | 1.35 | s" gforth_c_" 2swap s+ #>> ; |
| 470 : | |||
| 471 : | anton | 1.40 | : libcc-named-dir ( -- c-addr u ) |
| 472 : | anton | 1.43 | libcc-named-dir-v 2@ ; |
| 473 : | anton | 1.40 | |
| 474 : | : libcc-tmp-dir ( -- c-addr u ) | ||
| 475 : | anton | 1.41 | s" ~/.gforth/libcc-tmp/" ; |
| 476 : | anton | 1.40 | |
| 477 : | : prepend-dirname ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 ) | ||
| 478 : | anton | 1.41 | 2over s+ 2swap drop free throw ; |
| 479 : | anton | 1.35 | |
| 480 : | anton | 1.42 | : open-wrappers ( -- addr|0 ) |
| 481 : | lib-filename 2@ s" .la" s+ | ||
| 482 : | 2dup libcc-named-dir string-prefix? if ( c-addr u ) | ||
| 483 : | \ see if we can open it in the path | ||
| 484 : | libcc-named-dir nip /string | ||
| 485 : | libcc-path open-path-file if | ||
| 486 : | 0 exit endif | ||
| 487 : | ( wfile-id c-addr2 u2 ) rot close-file throw save-mem ( c-addr2 u2 ) | ||
| 488 : | endif | ||
| 489 : | \ 2dup cr type | ||
| 490 : | 2dup open-lib >r | ||
| 491 : | drop free throw r> ; | ||
| 492 : | |||
| 493 : | anton | 1.39 | : c-library-name-setup ( c-addr u -- ) |
| 494 : | anton | 1.35 | assert( c-source-file-id @ 0= ) |
| 495 : | anton | 1.40 | { d: filename } |
| 496 : | anton | 1.37 | here 0 , lib-handle-addr ! filename lib-filename 2! |
| 497 : | anton | 1.61 | filename basename lib-modulename 2! |
| 498 : | ['] write-c-prefix-line is save-c-prefix-line ; | ||
| 499 : | anton | 1.39 | |
| 500 : | : c-library-name-create ( -- ) | ||
| 501 : | lib-filename 2@ s" .c" s+ 2dup w/o create-file throw | ||
| 502 : | anton | 1.61 | c-source-file-id ! |
| 503 : | drop free throw ; | ||
| 504 : | anton | 1.39 | |
| 505 : | anton | 1.40 | : c-named-library-name ( c-addr u -- ) |
| 506 : | anton | 1.39 | \ set up filenames for a (possibly new) library; c-addr u is the |
| 507 : | \ basename of the library | ||
| 508 : | anton | 1.40 | libcc-named-dir prepend-dirname c-library-name-setup |
| 509 : | anton | 1.37 | open-wrappers dup if |
| 510 : | lib-handle-addr @ ! | ||
| 511 : | else | ||
| 512 : | anton | 1.56 | libcc-named-dir $1ff mkdir-parents drop |
| 513 : | anton | 1.39 | drop c-library-name-create |
| 514 : | anton | 1.61 | c-prefix-lines @ ['] print-c-prefix-line \ first line only |
| 515 : | c-source-file-id @ outfile-execute | ||
| 516 : | anton | 1.37 | endif ; |
| 517 : | |||
| 518 : | anton | 1.40 | : c-tmp-library-name ( c-addr u -- ) |
| 519 : | anton | 1.39 | \ set up filenames for a new library; c-addr u is the basename of |
| 520 : | \ the library | ||
| 521 : | anton | 1.56 | libcc-tmp-dir 2dup $1ff mkdir-parents drop |
| 522 : | anton | 1.61 | prepend-dirname c-library-name-setup c-library-name-create |
| 523 : | ['] print-c-prefix-lines c-source-file-id @ outfile-execute ; | ||
| 524 : | anton | 1.39 | |
| 525 : | anton | 1.37 | : lib-handle ( -- addr ) |
| 526 : | lib-handle-addr @ @ ; | ||
| 527 : | anton | 1.15 | |
| 528 : | anton | 1.12 | : init-c-source-file ( -- ) |
| 529 : | anton | 1.37 | lib-handle 0= if |
| 530 : | c-source-file-id @ 0= if | ||
| 531 : | anton | 1.40 | here gen-filename c-tmp-library-name |
| 532 : | anton | 1.37 | endif |
| 533 : | anton | 1.12 | endif ; |
| 534 : | anton | 1.11 | |
| 535 : | : c-source-file ( -- file-id ) | ||
| 536 : | anton | 1.12 | c-source-file-id @ assert( dup ) ; |
| 537 : | anton | 1.11 | |
| 538 : | anton | 1.37 | : notype-execute ( ... xt -- ... ) |
| 539 : | what's type { oldtype } try | ||
| 540 : | ['] 2drop is type execute 0 | ||
| 541 : | restore | ||
| 542 : | oldtype is type | ||
| 543 : | endtry | ||
| 544 : | throw ; | ||
| 545 : | |||
| 546 : | : c-source-file-execute ( ... xt -- ... ) | ||
| 547 : | \ direct the output of xt to c-source-file, or nothing | ||
| 548 : | lib-handle if | ||
| 549 : | notype-execute | ||
| 550 : | else | ||
| 551 : | c-source-file outfile-execute | ||
| 552 : | endif ; | ||
| 553 : | |||
| 554 : | anton | 1.24 | : .lib-error ( -- ) |
| 555 : | [ifdef] lib-error | ||
| 556 : | ['] cr stderr outfile-execute | ||
| 557 : | anton | 1.31 | lib-error ['] type stderr outfile-execute |
| 558 : | anton | 1.24 | [then] ; |
| 559 : | anton | 1.23 | |
| 560 : | anton | 1.33 | DEFER compile-wrapper-function ( -- ) |
| 561 : | anton | 1.35 | : compile-wrapper-function1 ( -- ) |
| 562 : | anton | 1.37 | lib-handle 0= if |
| 563 : | c-source-file close-file throw | ||
| 564 : | 0 c-source-file-id ! | ||
| 565 : | anton | 1.57 | [ libtool-command s" --silent --mode=compile " s+ |
| 566 : | pazsan | 1.58 | libtool-cc append s" -I '" append |
| 567 : | s" includedir" getenv append s" '" append ] sliteral | ||
| 568 : | anton | 1.37 | s" -O -c " s+ lib-filename 2@ append s" .c -o " append |
| 569 : | lib-filename 2@ append s" .lo" append ( c-addr u ) | ||
| 570 : | pazsan | 1.55 | \ 2dup type cr |
| 571 : | anton | 1.37 | 2dup system drop free throw $? abort" libtool compile failed" |
| 572 : | anton | 1.57 | [ libtool-command s" --silent --mode=link " s+ |
| 573 : | pazsan | 1.55 | libtool-cc append libtool-flags append s" -module -rpath " s+ ] sliteral |
| 574 : | anton | 1.49 | lib-filename 2@ dirname replace-rpath s+ s" " append |
| 575 : | anton | 1.37 | lib-filename 2@ append s" .lo -o " append |
| 576 : | lib-filename 2@ append s" .la" append ( c-addr u ) | ||
| 577 : | pazsan | 1.59 | c-libs 2@ append |
| 578 : | pazsan | 1.47 | \ 2dup type cr |
| 579 : | anton | 1.37 | 2dup system drop free throw $? abort" libtool link failed" |
| 580 : | open-wrappers dup 0= if | ||
| 581 : | .lib-error true abort" open-lib failed" | ||
| 582 : | endif | ||
| 583 : | ( lib-handle ) lib-handle-addr @ ! | ||
| 584 : | anton | 1.23 | endif |
| 585 : | anton | 1.35 | lib-filename 2@ drop free throw 0 0 lib-filename 2! ; |
| 586 : | ' compile-wrapper-function1 IS compile-wrapper-function | ||
| 587 : | anton | 1.5 | \ s" ar rcs xxx.a xxx.o" system |
| 588 : | \ $? abort" ar generated error" ; | ||
| 589 : | |||
| 590 : | anton | 1.12 | : link-wrapper-function { cff -- sym } |
| 591 : | cff cff-rtype wrapper-function-name { d: wrapper-name } | ||
| 592 : | anton | 1.23 | wrapper-name cff cff-lha @ @ assert( dup ) lib-sym dup 0= if |
| 593 : | anton | 1.24 | .lib-error -&32 throw |
| 594 : | anton | 1.23 | endif |
| 595 : | anton | 1.10 | wrapper-name drop free throw ; |
| 596 : | anton | 1.8 | |
| 597 : | anton | 1.12 | : c-function-ft ( xt-defr xt-cfr "c-name" "{libcc-type}" "--" "libcc-type" -- ) |
| 598 : | anton | 1.8 | \ build time/first time action for c-function |
| 599 : | anton | 1.12 | init-c-source-file |
| 600 : | noname create 2, lib-handle-addr @ , | ||
| 601 : | anton | 1.2 | parse-name { d: c-name } |
| 602 : | anton | 1.8 | here parse-function-types c-name string, |
| 603 : | anton | 1.37 | ['] gen-wrapper-function c-source-file-execute |
| 604 : | anton | 1.8 | does> ( ... -- ... ) |
| 605 : | anton | 1.10 | dup 2@ { xt-defer xt-cfr } |
| 606 : | anton | 1.12 | dup cff-lha @ @ 0= if |
| 607 : | compile-wrapper-function | ||
| 608 : | endif | ||
| 609 : | link-wrapper-function xt-cfr >body ! | ||
| 610 : | anton | 1.8 | xt-cfr xt-defer defer! |
| 611 : | xt-cfr execute ; | ||
| 612 : | |||
| 613 : | : c-function-rt ( -- ) | ||
| 614 : | \ run-time definition for c function; addr is the address where | ||
| 615 : | \ the sym should be stored | ||
| 616 : | noname create 0 , | ||
| 617 : | anton | 1.2 | does> ( ... -- ... ) |
| 618 : | @ call-c ; | ||
| 619 : | |||
| 620 : | anton | 1.18 | : c-function ( "forth-name" "c-name" "@{type@}" "--" "type" -- ) \ gforth |
| 621 : | anton | 1.17 | \G Define a Forth word @i{forth-name}. @i{Forth-name} has the |
| 622 : | \G specified stack effect and calls the C function @code{c-name}. | ||
| 623 : | anton | 1.8 | defer lastxt dup c-function-rt lastxt c-function-ft |
| 624 : | lastxt swap defer! ; | ||
| 625 : | anton | 1.33 | |
| 626 : | anton | 1.53 | : clear-libs ( -- ) \ gforth |
| 627 : | anton | 1.33 | \G Clear the list of libs |
| 628 : | c-source-file-id @ if | ||
| 629 : | compile-wrapper-function | ||
| 630 : | endif | ||
| 631 : | pazsan | 1.59 | 0. c-libs 2! ; |
| 632 : | anton | 1.33 | clear-libs |
| 633 : | anton | 1.35 | |
| 634 : | : c-library-incomplete ( -- ) | ||
| 635 : | true abort" Called function of unfinished named C library" ; | ||
| 636 : | |||
| 637 : | : c-library-name ( c-addr u -- ) \ gforth | ||
| 638 : | anton | 1.38 | \G Start a C library interface with name @i{c-addr u}. |
| 639 : | anton | 1.35 | clear-libs |
| 640 : | ['] c-library-incomplete is compile-wrapper-function | ||
| 641 : | anton | 1.40 | c-named-library-name ; |
| 642 : | anton | 1.35 | |
| 643 : | : c-library ( "name" -- ) \ gforth | ||
| 644 : | \G Parsing version of @code{c-library-name} | ||
| 645 : | anton | 1.39 | parse-name save-mem c-library-name ; |
| 646 : | anton | 1.35 | |
| 647 : | anton | 1.38 | : end-c-library ( -- ) \ gforth |
| 648 : | \G Finish and (if necessary) build the latest C library interface. | ||
| 649 : | anton | 1.61 | ['] save-c-prefix-line1 is save-c-prefix-line |
| 650 : | anton | 1.35 | ['] compile-wrapper-function1 is compile-wrapper-function |
| 651 : | compile-wrapper-function1 ; | ||
| 652 : | anton | 1.43 | |
| 653 : | : init-libcc ( -- ) | ||
| 654 : | s" ~/.gforth/libcc-named/" libcc-named-dir-v 2! | ||
| 655 : | pazsan | 1.45 | [IFDEF] make-path |
| 656 : | anton | 1.43 | make-path to libcc-path |
| 657 : | libcc-named-dir libcc-path also-path | ||
| 658 : | [ s" libccdir" getenv ] sliteral libcc-path also-path | ||
| 659 : | pazsan | 1.45 | [THEN] |
| 660 : | anton | 1.43 | ; |
| 661 : | |||
| 662 : | init-libcc | ||
| 663 : | |||
| 664 : | :noname ( -- ) | ||
| 665 : | defers 'cold | ||
| 666 : | init-libcc ; | ||
| 667 : | is 'cold |
|
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