28 lines
1.2 KiB
Forth
28 lines
1.2 KiB
Forth
\ Copyright 2022 Bradley D. Nelson
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\
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\ Licensed under the Apache License, Version 2.0 (the "License");
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\ you may not use this file except in compliance with the License.
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\ You may obtain a copy of the License at
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\
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\ http://www.apache.org/licenses/LICENSE-2.0
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\
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\ Unless required by applicable law or agreed to in writing, software
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\ distributed under the License is distributed on an "AS IS" BASIS,
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\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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\ See the License for the specific language governing permissions and
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\ limitations under the License.
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( Dictionary Format )
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: >flags& ( xt -- a ) cell - ; : >flags ( xt -- flags ) >flags& c@ ;
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: >name-length ( xt -- n ) >flags& 1+ c@ ;
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: >params ( xt -- n ) >flags& 2 + sw@ $ffff and ;
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: >size ( xt -- n ) dup >params cells swap >name-length aligned + 3 cells + ;
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: >link& ( xt -- a ) 2 cells - ; : >link ( xt -- a ) >link& @ ;
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: >name ( xt -- a n ) dup >name-length swap >link& over aligned - swap ;
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: >body ( xt -- a ) dup @ [ ' >flags @ ] literal = 2 + cells + ;
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: aligned ( a -- a ) cell 1 - dup >r + r> invert and ;
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: align here aligned here - allot ;
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: fill32 ( a n v ) swap >r swap r> 0 ?do 2dup ! cell+ loop 2drop ;
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