Annotation of gforth/code.fs, revision 1.12

1.1       anton       1: \ ASSEMBLER, CODE etc.
                      2: 
1.10      anton       3: \ Copyright (C) 1995,1996,1997,1999 Free Software Foundation, Inc.
1.2       anton       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
1.11      anton      19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.2       anton      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: 
1.9       crook      27: : init-asm ( -- ) \ gforth
1.1       anton      28:     also assembler ;
                     29: 
1.7       anton      30: : code ( "name" -- colon-sys ) \ tools-ext
1.1       anton      31:     \ start a native code definition
1.6       anton      32:     header
1.12    ! anton      33:     here >body cfa,
1.6       anton      34:     defstart init-asm ;
1.1       anton      35: 
                     36: : (;code) ( -- ) \ gforth
                     37:     \ execution semantics of @code{;code}
                     38:     r> lastxt code-address! ;
                     39: 
1.6       anton      40: :noname ( -- colon-sys )
                     41:     align here lastxt code-address!
                     42:     defstart init-asm ;
1.4       pazsan     43: :noname ( colon-sys1 -- colon-sys2 )   \ tools-ext     semicolon-code
1.1       anton      44:     ( create the [;code] part of a low level defining word )
1.12    ! anton      45:     ;-hook postpone (;code) basic-block-end ?struc postpone [
1.3       anton      46:     defstart init-asm ;
1.7       anton      47: interpret/compile: ;code ( compilation. colon-sys1 -- colon-sys2 )     \ tools-ext     semicolon-code
1.1       anton      48: 
                     49: : end-code ( colon-sys -- )    \ gforth        end_code
                     50:     ( end a code definition )
                     51:     lastxt here over - flush-icache
                     52:     previous ?struc reveal ;
1.9       crook      53: 

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