File:  [gforth] / gforth / code.fs
Revision 1.19: download - view: text, annotated - select for diffs
Tue Apr 6 21:33:44 2010 UTC (11 years, 5 months ago) by dvdkhlng
Branches: MAIN
CVS tags: HEAD
workaround for bootstrap problem

    1: \ ASSEMBLER, CODE etc.
    2: 
    3: \ Copyright (C) 1995,1996,1997,1999,2003,2007 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 3
   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, see http://www.gnu.org/licenses/.
   19: 
   20: \ does not include the actual assembler (which is machine-dependent),
   21: \ only words like CODE that are implementation-dependent, but can be
   22: \ defined for all machines.
   23: 
   24: vocabulary assembler ( -- ) \ tools-ext
   25: 
   26: : init-asm ( -- ) \ gforth
   27:     also assembler ;
   28: 
   29: : code ( "name" -- colon-sys )	\ tools-ext
   30:     \ start a native code definition
   31:     header
   32:     here >body cfa,
   33:     defstart init-asm ;
   34: 
   35: [ifdef] doabicode:
   36: : abi-code ( "name" -- colon-sys )	\ gforth
   37:    \ start a native code definition that is called using the platform's
   38:    \ ABI conventions corresponding to C-prototype
   39:    \ struct{Cell*sp;double*fp;} function (Cell *sp, double *fp);
   40:     header  
   41:     doabicode: cfa,
   42:     defstart init-asm ;
   43: [endif]
   44: 
   45: : (;code) ( -- ) \ gforth
   46:     \ execution semantics of @code{;code}
   47:     r> latestxt code-address! ;
   48: 
   49: :noname ( -- colon-sys )
   50:     align here latestxt code-address!
   51:     defstart init-asm ;
   52: :noname ( colon-sys1 -- colon-sys2 )	\ tools-ext	semicolon-code
   53:     ( create the [;code] part of a low level defining word )
   54:     ;-hook postpone (;code) basic-block-end finish-code ?struc postpone [
   55:     defstart init-asm ;
   56: interpret/compile: ;code ( compilation. colon-sys1 -- colon-sys2 )	\ tools-ext	semicolon-code
   57: 
   58: : end-code ( colon-sys -- )	\ gforth	end_code
   59:     ( end a code definition )
   60:     latestxt here over - flush-icache
   61:     previous ?struc reveal ;
   62: 

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