File:  [gforth] / gforth / code.fs
Revision 1.14: download - view: text, annotated - select for diffs
Sun Mar 9 15:16:46 2003 UTC (16 years, 8 months ago) by anton
Branches: MAIN
CVS tags: v0-6-1, v0-6-0, HEAD
updated copyright years

    1: \ ASSEMBLER, CODE etc.
    2: 
    3: \ Copyright (C) 1995,1996,1997,1999,2003 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: \ 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 ( -- ) \ gforth
   28:     also assembler ;
   29: 
   30: : code ( "name" -- colon-sys )	\ tools-ext
   31:     \ start a native code definition
   32:     header
   33:     here >body cfa,
   34:     defstart init-asm ;
   35: 
   36: : (;code) ( -- ) \ gforth
   37:     \ execution semantics of @code{;code}
   38:     r> lastxt code-address! ;
   39: 
   40: :noname ( -- colon-sys )
   41:     align here lastxt code-address!
   42:     defstart init-asm ;
   43: :noname ( colon-sys1 -- colon-sys2 )	\ tools-ext	semicolon-code
   44:     ( create the [;code] part of a low level defining word )
   45:     ;-hook postpone (;code) basic-block-end finish-code ?struc postpone [
   46:     defstart init-asm ;
   47: interpret/compile: ;code ( compilation. colon-sys1 -- colon-sys2 )	\ tools-ext	semicolon-code
   48: 
   49: : end-code ( colon-sys -- )	\ gforth	end_code
   50:     ( end a code definition )
   51:     lastxt here over - flush-icache
   52:     previous ?struc reveal ;
   53: 

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