version 1.4, 1995/08/27 19:56:39
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version 1.8, 1995/11/07 18:07:02
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\ $Id$ |
\ data structures (like C structs) |
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\ Copyright (C) 1995 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
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\ Gforth is free software; you can redistribute it and/or |
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\ modify it under the terms of the GNU General Public License |
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\ as published by the Free Software Foundation; either version 2 |
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\ of the License, or (at your option) any later version. |
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\ This program is distributed in the hope that it will be useful, |
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\ but WITHOUT ANY WARRANTY; without even the implied warranty of |
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\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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\ GNU General Public License for more details. |
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\ You should have received a copy of the GNU General Public License |
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\ along with this program; if not, write to the Free Software |
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\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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\ Usage example: |
\ Usage example: |
\ |
\ |
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: field ( offset1 align1 size align -- offset2 align2 ) |
: field ( offset1 align1 size align -- offset2 align2 ) |
\ note: this version uses local variables |
\ note: this version uses local variables |
Header reveal -7 ( [ :dostruc ] Literal ) cfa, |
Header reveal dofield: cfa, |
>r rot r@ nalign dup , ( align1 size offset ) |
>r rot r@ nalign dup , ( align1 size offset ) |
+ swap r> nalign ; |
+ swap r> nalign ; |
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: floats: ( n -- size align ) |
: floats: ( n -- size align ) |
floats 1 floats ; |
floats 1 floats ; |
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\ dfoats and sfloats is not yet defined |
: dfloats: ( n -- size align ) |
\ : dfloats: ( n -- size align ) |
dfloats 1 dfloats ; |
\ dfloats 1 dfloats ; |
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\ |
: sfloats: ( n -- size align ) |
\ : sfloats: ( n -- size align ) |
sfloats 1 sfloats ; |
\ sfloats 1 sfloats ; |
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: struct-align ( size align -- ) |
: struct-align ( size align -- ) |
dp @ swap nalign dp ! |
dp @ swap nalign dp ! |
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over swap struct-align |
over swap struct-align |
here swap allot ; |
here swap allot ; |
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: struct-allocate ( size align -- addr ) |
: struct-allocate ( size align -- addr ior ) |
drop allocate ; |
drop allocate ; |