Annotation of gforth/code.fs, revision 1.20

1.1       anton       1: \ ASSEMBLER, CODE etc.
                      2: 
1.17      anton       3: \ Copyright (C) 1995,1996,1997,1999,2003,2007 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
1.16      anton       9: \ as published by the Free Software Foundation, either version 3
1.2       anton      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
1.16      anton      18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.2       anton      19: 
1.1       anton      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: 
1.9       crook      26: : init-asm ( -- ) \ gforth
1.1       anton      27:     also assembler ;
                     28: 
1.7       anton      29: : code ( "name" -- colon-sys ) \ tools-ext
1.20    ! dvdkhlng   30:     \G start a native code definition
1.6       anton      31:     header
1.12      anton      32:     here >body cfa,
1.6       anton      33:     defstart init-asm ;
1.1       anton      34: 
1.19      dvdkhlng   35: [ifdef] doabicode:
1.20    ! dvdkhlng   36: : abi-code ( "name" -- colon-sys )     \ gforth        abi_code
        !            37:    \G Start a native code definition that is called using the platform's
        !            38:    \G ABI conventions corresponding to the C-prototype:
        !            39:    \G @example
        !            40:    \G struct@{Cell*sp;double*fp;@} function (Cell *sp, double *fp);
        !            41:    \G @end example
1.18      dvdkhlng   42:     header  
                     43:     doabicode: cfa,
                     44:     defstart init-asm ;
1.19      dvdkhlng   45: [endif]
1.18      dvdkhlng   46: 
1.1       anton      47: : (;code) ( -- ) \ gforth
                     48:     \ execution semantics of @code{;code}
1.15      anton      49:     r> latestxt code-address! ;
1.1       anton      50: 
1.6       anton      51: :noname ( -- colon-sys )
1.15      anton      52:     align here latestxt code-address!
1.6       anton      53:     defstart init-asm ;
1.4       pazsan     54: :noname ( colon-sys1 -- colon-sys2 )   \ tools-ext     semicolon-code
1.1       anton      55:     ( create the [;code] part of a low level defining word )
1.13      anton      56:     ;-hook postpone (;code) basic-block-end finish-code ?struc postpone [
1.3       anton      57:     defstart init-asm ;
1.7       anton      58: interpret/compile: ;code ( compilation. colon-sys1 -- colon-sys2 )     \ tools-ext     semicolon-code
1.1       anton      59: 
                     60: : end-code ( colon-sys -- )    \ gforth        end_code
1.20    ! dvdkhlng   61:     \G end a code definition 
1.15      anton      62:     latestxt here over - flush-icache
1.1       anton      63:     previous ?struc reveal ;
1.9       crook      64: 

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