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| 1 : | pazsan | 1.1 | \ lib.fs shared library support package 11may97py |
| 2 : | |||
| 3 : | \ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. | ||
| 4 : | |||
| 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 : | Variable thisproc | ||
| 23 : | Variable thislib | ||
| 24 : | \G links between libraries | ||
| 25 : | |||
| 26 : | : @lib ( lib -- ) | ||
| 27 : | \G obtains library handle | ||
| 28 : | cell+ dup 2 cells + count open-lib | ||
| 29 : | dup 0= abort" Library not found" swap ! ; | ||
| 30 : | |||
| 31 : | : @proc ( lib addr -- ) | ||
| 32 : | \G obtains symbol address | ||
| 33 : | cell+ tuck cell+ @ count rot cell+ @ | ||
| 34 : | lib-sym dup 0= abort" Proc not found!" swap ! ; | ||
| 35 : | |||
| 36 : | : proc, ( lib -- ) | ||
| 37 : | \G allocates and initializes proc stub | ||
| 38 : | \G stub format: | ||
| 39 : | \G linked list in library | ||
| 40 : | \G address of proc | ||
| 41 : | \G ptr to OS name of symbol as counted string | ||
| 42 : | \G threaded code for invocation | ||
| 43 : | here dup thisproc ! | ||
| 44 : | swap 2 cells + dup @ A, ! | ||
| 45 : | 0 , 0 A, ; | ||
| 46 : | |||
| 47 : | : proc: ( lib "name" -- ) | ||
| 48 : | \G Creates a named proc stub | ||
| 49 : | Create proc, 0 | ||
| 50 : | DOES> ( x1 .. xn -- r ) | ||
| 51 : | dup cell+ @ swap 3 cells + >r ; | ||
| 52 : | |||
| 53 : | : library ( "name" "file" -- ) | ||
| 54 : | \G loads library "file" and creates a proc defining word "name" | ||
| 55 : | \G library format: | ||
| 56 : | \G linked list of libraries | ||
| 57 : | \G library handle | ||
| 58 : | \G linked list of library's procs | ||
| 59 : | \G OS name of library as counted string | ||
| 60 : | Create here libs @ A, dup libs ! | ||
| 61 : | 0 , 0 A, bl sword string, @lib | ||
| 62 : | DOES> ( -- ) dup thislib ! proc: ; | ||
| 63 : | |||
| 64 : | : init-shared-libs ( -- ) | ||
| 65 : | defers 'cold libs | ||
| 66 : | 0 libs BEGIN @ dup WHILE dup REPEAT drop | ||
| 67 : | BEGIN dup WHILE >r | ||
| 68 : | r@ @lib | ||
| 69 : | r@ 2 cells + BEGIN @ dup WHILE r@ over @proc REPEAT | ||
| 70 : | drop rdrop | ||
| 71 : | REPEAT drop ; | ||
| 72 : | |||
| 73 : | ' init-shared-libs IS 'cold | ||
| 74 : | |||
| 75 : | ' av-int AConstant int | ||
| 76 : | ' av-float AConstant sf | ||
| 77 : | ' av-double AConstant df | ||
| 78 : | ' av-longlong AConstant llong | ||
| 79 : | ' av-ptr AConstant ptr | ||
| 80 : | |||
| 81 : | Variable revdec revdec off | ||
| 82 : | \ turn revdec on to compile bigFORTH libraries | ||
| 83 : | |||
| 84 : | : rettype ( endxt startxt "name" -- ) | ||
| 85 : | create immediate 2, | ||
| 86 : | DOES> | ||
| 87 : | 2@ compile, >r | ||
| 88 : | revdec @ IF | ||
| 89 : | 0 >r BEGIN dup WHILE >r REPEAT drop | ||
| 90 : | BEGIN r> dup WHILE compile, REPEAT drop | ||
| 91 : | ELSE | ||
| 92 : | BEGIN dup WHILE compile, REPEAT drop | ||
| 93 : | THEN | ||
| 94 : | r> compile, postpone EXIT | ||
| 95 : | here thisproc @ 2 cells + ! bl sword s, | ||
| 96 : | thislib @ thisproc @ @proc ; | ||
| 97 : | |||
| 98 : | ' av-call-void ' av-start-void rettype (void) | ||
| 99 : | ' av-call-int ' av-start-int rettype (int) | ||
| 100 : | ' av-call-float ' av-start-float rettype (sf) | ||
| 101 : | ' av-call-double ' av-start-double rettype (fp) | ||
| 102 : | ' av-call-longlong ' av-start-longlong rettype (llong) | ||
| 103 : | ' av-call-ptr ' av-start-ptr rettype (ptr) | ||
| 104 : | |||
| 105 : | \ compatibility layer for old library -- use is deprecated | ||
| 106 : | |||
| 107 : | Variable legacy | ||
| 108 : | |||
| 109 : | \ turn legacy on for old library | ||
| 110 : | |||
| 111 : | warnings @ warnings off | ||
| 112 : | |||
| 113 : | : (int) ( n -- ) | ||
| 114 : | legacy @ IF | ||
| 115 : | >r ' execute r> 0 ?DO int LOOP | ||
| 116 : | THEN (int) ; | ||
| 117 : | : (void) ( n -- ) | ||
| 118 : | legacy @ IF | ||
| 119 : | >r ' execute r> 0 ?DO int LOOP | ||
| 120 : | THEN (void) ; | ||
| 121 : | : (float) ( n -- ) | ||
| 122 : | legacy @ IF | ||
| 123 : | >r ' execute r> 0 ?DO df LOOP | ||
| 124 : | THEN (df) ; | ||
| 125 : | |||
| 126 : | warnings on | ||
| 127 : | |||
| 128 : | [ifdef] testing | ||
| 129 : | |||
| 130 : | library libc /lib/libc.so.6 | ||
| 131 : | |||
| 132 : | libc sleep int (int) sleep | ||
| 133 : | libc open int int ptr (int) open | ||
| 134 : | libc lseek int llong int (llong) lseek | ||
| 135 : | libc read int ptr int (int) read | ||
| 136 : | libc close int (int) close | ||
| 137 : | |||
| 138 : | library libm /lib/libm.so.6 | ||
| 139 : | |||
| 140 : | libm fmodf sf sf (sf) fmodf | ||
| 141 : | libm fmod df df (fp) fmod | ||
| 142 : | |||
| 143 : | [then] |
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