Annotation of gforth/code.fs, revision 1.2
1.1 anton 1: \ ASSEMBLER, CODE etc.
2:
1.2 ! anton 3: \ Copyright (C) 1995 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., 675 Mass Ave, Cambridge, MA 02139, USA.
! 20:
1.1 anton 21: \ does not include the actual assembler (which is machine-dependent),
22: \ only words like CODE that are implementation-dependent, but can be
23: \ defined for all machines.
24:
25: vocabulary assembler ( -- ) \ tools-ext
26:
27: : init-asm ( -- )
28: also assembler ;
29:
30: : code ( -- colon-sys ) \ tools-ext
31: \ start a native code definition
32: header here >body cfa, defstart init-asm ;
33:
34: : (;code) ( -- ) \ gforth
35: \ execution semantics of @code{;code}
36: r> lastxt code-address! ;
37:
38: : ;code ( colon-sys1 -- colon-sys2 ) \ tools-ext semicolon-code
39: ( create the [;code] part of a low level defining word )
40: state @
41: IF
42: ;-hook postpone (;code) ?struc postpone [
43: ELSE
44: align here lastxt code-address!
45: THEN
46: defstart init-asm ; immediate
47:
48: : end-code ( colon-sys -- ) \ gforth end_code
49: ( end a code definition )
50: lastxt here over - flush-icache
51: previous ?struc reveal ;
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