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| 1 : | pazsan | 1.2 | \ lib.fs shared library support package 16aug03py |
| 2 : | pazsan | 1.1 | |
| 3 : | pazsan | 1.2 | \ Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc. |
| 4 : | pazsan | 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 : | \ as published by the Free Software Foundation; either version 2 | ||
| 10 : | \ 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 : | \ along with this program; if not, write to the Free Software | ||
| 19 : | \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | ||
| 20 : | |||
| 21 : | Variable libs 0 libs ! | ||
| 22 : | pazsan | 1.4 | \ links between libraries |
| 23 : | pazsan | 1.1 | Variable thisproc |
| 24 : | Variable thislib | ||
| 25 : | pazsan | 1.4 | |
| 26 : | pazsan | 1.2 | Variable revdec revdec off |
| 27 : | \ turn revdec on to compile bigFORTH libraries | ||
| 28 : | pazsan | 1.4 | Variable revarg revarg off |
| 29 : | \ turn revarg on to compile declarations with reverse arguments | ||
| 30 : | Variable legacy legacy off | ||
| 31 : | \ turn legacy on to compile bigFORTH legacy libraries | ||
| 32 : | pazsan | 1.2 | |
| 33 : | Vocabulary c-decl | ||
| 34 : | Vocabulary cb-decl | ||
| 35 : | pazsan | 1.1 | |
| 36 : | : @lib ( lib -- ) | ||
| 37 : | \G obtains library handle | ||
| 38 : | cell+ dup 2 cells + count open-lib | ||
| 39 : | dup 0= abort" Library not found" swap ! ; | ||
| 40 : | |||
| 41 : | : @proc ( lib addr -- ) | ||
| 42 : | \G obtains symbol address | ||
| 43 : | cell+ tuck cell+ @ count rot cell+ @ | ||
| 44 : | lib-sym dup 0= abort" Proc not found!" swap ! ; | ||
| 45 : | |||
| 46 : | : proc, ( lib -- ) | ||
| 47 : | \G allocates and initializes proc stub | ||
| 48 : | \G stub format: | ||
| 49 : | \G linked list in library | ||
| 50 : | \G address of proc | ||
| 51 : | \G ptr to OS name of symbol as counted string | ||
| 52 : | \G threaded code for invocation | ||
| 53 : | here dup thisproc ! | ||
| 54 : | swap 2 cells + dup @ A, ! | ||
| 55 : | 0 , 0 A, ; | ||
| 56 : | |||
| 57 : | pazsan | 1.4 | Defer legacy-proc ' noop IS legacy-proc |
| 58 : | |||
| 59 : | pazsan | 1.1 | : proc: ( lib "name" -- ) |
| 60 : | pazsan | 1.4 | \G Creates a named proc stub |
| 61 : | pazsan | 1.2 | Create proc, 0 also c-decl |
| 62 : | pazsan | 1.4 | legacy @ IF legacy-proc THEN |
| 63 : | pazsan | 1.1 | DOES> ( x1 .. xn -- r ) |
| 64 : | dup cell+ @ swap 3 cells + >r ; | ||
| 65 : | |||
| 66 : | : library ( "name" "file" -- ) | ||
| 67 : | pazsan | 1.4 | \G loads library "file" and creates a proc defining word "name" |
| 68 : | \G library format: | ||
| 69 : | \G linked list of libraries | ||
| 70 : | \G library handle | ||
| 71 : | \G linked list of library's procs | ||
| 72 : | \G OS name of library as counted string | ||
| 73 : | pazsan | 1.1 | Create here libs @ A, dup libs ! |
| 74 : | pazsan | 1.6 | 0 , 0 A, parse-name string, @lib |
| 75 : | pazsan | 1.1 | DOES> ( -- ) dup thislib ! proc: ; |
| 76 : | |||
| 77 : | : init-shared-libs ( -- ) | ||
| 78 : | defers 'cold libs | ||
| 79 : | 0 libs BEGIN @ dup WHILE dup REPEAT drop | ||
| 80 : | BEGIN dup WHILE >r | ||
| 81 : | r@ @lib | ||
| 82 : | r@ 2 cells + BEGIN @ dup WHILE r@ over @proc REPEAT | ||
| 83 : | drop rdrop | ||
| 84 : | REPEAT drop ; | ||
| 85 : | |||
| 86 : | ' init-shared-libs IS 'cold | ||
| 87 : | |||
| 88 : | pazsan | 1.4 | : argtype ( revxt pushxt fwxt "name" -- ) |
| 89 : | Create , , , ; | ||
| 90 : | |||
| 91 : | : arg@ ( arg -- argxt pushxt ) | ||
| 92 : | revarg @ IF 2 cells + @ ['] noop swap ELSE 2@ THEN ; | ||
| 93 : | |||
| 94 : | : arg, ( xt -- ) | ||
| 95 : | dup ['] noop = IF drop EXIT THEN compile, ; | ||
| 96 : | |||
| 97 : | : decl, ( 0 arg1 .. argn call start -- ) | ||
| 98 : | pazsan | 1.1 | 2@ compile, >r |
| 99 : | pazsan | 1.2 | revdec @ IF 0 >r |
| 100 : | pazsan | 1.4 | BEGIN dup WHILE >r REPEAT |
| 101 : | BEGIN r> dup WHILE arg@ arg, REPEAT drop | ||
| 102 : | BEGIN dup WHILE arg, REPEAT drop | ||
| 103 : | ELSE 0 >r | ||
| 104 : | BEGIN dup WHILE arg@ arg, >r REPEAT drop | ||
| 105 : | BEGIN r> dup WHILE arg, REPEAT drop | ||
| 106 : | pazsan | 1.1 | THEN |
| 107 : | pazsan | 1.4 | r> compile, postpone EXIT ; |
| 108 : | |||
| 109 : | : symbol, ( "c-symbol" -- ) | ||
| 110 : | pazsan | 1.6 | here thisproc @ 2 cells + ! parse-name s, |
| 111 : | pazsan | 1.4 | thislib @ thisproc @ @proc ; |
| 112 : | |||
| 113 : | : rettype ( endxt startxt "name" -- ) | ||
| 114 : | Create 2, | ||
| 115 : | DOES> decl, symbol, previous revarg off ; | ||
| 116 : | pazsan | 1.2 | |
| 117 : | also c-decl definitions | ||
| 118 : | |||
| 119 : | pazsan | 1.4 | : <rev> revarg on ; |
| 120 : | |||
| 121 : | ' av-int ' av-int-r ' >r argtype int | ||
| 122 : | ' av-float ' av-float-r ' f>l argtype sf | ||
| 123 : | ' av-double ' av-double-r ' f>l argtype df | ||
| 124 : | ' av-longlong ' av-longlong-r ' 2>r argtype llong | ||
| 125 : | ' av-ptr ' av-ptr-r ' >r argtype ptr | ||
| 126 : | |||
| 127 : | ' av-call-void ' av-start-void rettype (void) | ||
| 128 : | ' av-call-int ' av-start-int rettype (int) | ||
| 129 : | ' av-call-float ' av-start-float rettype (sf) | ||
| 130 : | ' av-call-double ' av-start-double rettype (fp) | ||
| 131 : | pazsan | 1.1 | ' av-call-longlong ' av-start-longlong rettype (llong) |
| 132 : | pazsan | 1.4 | ' av-call-ptr ' av-start-ptr rettype (ptr) |
| 133 : | pazsan | 1.1 | |
| 134 : | pazsan | 1.2 | previous definitions |
| 135 : | pazsan | 1.1 | |
| 136 : | pazsan | 1.4 | \ legacy support for old library interfaces |
| 137 : | \ interface to old vararg stuff not implemented yet | ||
| 138 : | pazsan | 1.1 | |
| 139 : | pazsan | 1.2 | also c-decl |
| 140 : | pazsan | 1.1 | |
| 141 : | pazsan | 1.4 | :noname ( n 0 -- 0 int1 .. intn ) |
| 142 : | legacy @ 0< revarg ! | ||
| 143 : | swap 0 ?DO int LOOP (int) | ||
| 144 : | ; IS legacy-proc | ||
| 145 : | |||
| 146 : | pazsan | 1.1 | : (int) ( n -- ) |
| 147 : | pazsan | 1.4 | >r ' execute r> 0 ?DO int LOOP (int) ; |
| 148 : | pazsan | 1.1 | : (void) ( n -- ) |
| 149 : | pazsan | 1.4 | >r ' execute r> 0 ?DO int LOOP (void) ; |
| 150 : | pazsan | 1.1 | : (float) ( n -- ) |
| 151 : | pazsan | 1.4 | >r ' execute r> 0 ?DO df LOOP (fp) ; |
| 152 : | pazsan | 1.2 | |
| 153 : | previous | ||
| 154 : | |||
| 155 : | \ callback stuff | ||
| 156 : | |||
| 157 : | Variable callbacks | ||
| 158 : | \G link between callbacks | ||
| 159 : | |||
| 160 : | : callback ( -- ) | ||
| 161 : | Create 0 ] postpone >r also cb-decl | ||
| 162 : | DOES> | ||
| 163 : | Create here >r 0 , callbacks @ A, r@ callbacks ! | ||
| 164 : | pazsan | 1.3 | swap postpone Literal postpone call , postpone EXIT |
| 165 : | pazsan | 1.2 | r> dup cell+ cell+ alloc-callback swap ! |
| 166 : | DOES> @ ; | ||
| 167 : | |||
| 168 : | : callback; ( 0 xt1 .. xtn -- ) | ||
| 169 : | BEGIN over WHILE compile, REPEAT | ||
| 170 : | postpone r> postpone execute compile, drop | ||
| 171 : | postpone EXIT postpone [ previous ; immediate | ||
| 172 : | |||
| 173 : | : va-ret ( xt xt -- ) | ||
| 174 : | Create A, A, immediate | ||
| 175 : | DOES> 2@ compile, ; | ||
| 176 : | |||
| 177 : | : init-callbacks ( -- ) | ||
| 178 : | defers 'cold callbacks 1 cells - | ||
| 179 : | BEGIN cell+ @ dup WHILE dup cell+ cell+ alloc-callback over ! | ||
| 180 : | REPEAT drop ; | ||
| 181 : | |||
| 182 : | ' init-callbacks IS 'cold | ||
| 183 : | |||
| 184 : | also cb-decl definitions | ||
| 185 : | |||
| 186 : | \ arguments | ||
| 187 : | pazsan | 1.1 | |
| 188 : | pazsan | 1.2 | ' va-arg-int Alias int |
| 189 : | ' va-arg-float Alias sf | ||
| 190 : | ' va-arg-double Alias df | ||
| 191 : | ' va-arg-longlong Alias llong | ||
| 192 : | ' va-arg-ptr Alias ptr | ||
| 193 : | |||
| 194 : | ' va-return-void ' va-start-void va-ret (void) | ||
| 195 : | ' va-return-int ' va-start-int va-ret (int) | ||
| 196 : | ' va-return-float ' va-start-float va-ret (sf) | ||
| 197 : | ' va-return-double ' va-start-double va-ret (fp) | ||
| 198 : | ' va-return-longlong ' va-start-longlong va-ret (llong) | ||
| 199 : | ' va-return-ptr ' va-start-ptr va-ret (ptr) | ||
| 200 : | |||
| 201 : | previous definitions |
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