| \ lib.fs shared library support package 11may97py |
\ lib.fs shared library support package 11may97py |
| |
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| \ Copyright (C) 1995-1997 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc. |
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| \ This file is part of Gforth. |
\ This file is part of Gforth. |
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| |
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| \ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
| \ along with this program; if not, write to the Free Software |
\ along with this program; if not, write to the Free Software |
| \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
| |
|
| Create icall-table |
[IFDEF] av-call-int |
| ] icall0 ;s icall1 ;s icall2 ;s icall3 ;s icall4 ;s icall5 ;s icall6 ;s |
include fflib.fs |
| NIL swap NIL swap NIL swap NIL swap NIL swap NIL swap NIL swap |
[ELSE] |
| NIL swap NIL swap NIL swap NIL swap NIL swap NIL swap icall20 ;s [ |
include oldlib.fs |
| Create fcall-table |
[THEN] |
| ] fcall0 ;s fcall1 ;s fcall2 ;s fcall3 ;s fcall4 ;s fcall5 ;s fcall6 ;s |
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| NIL swap NIL swap NIL swap NIL swap NIL swap NIL swap NIL swap |
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| NIL swap NIL swap NIL swap NIL swap NIL swap NIL swap fcall20 ;s [ |
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| Variable libs 0 libs ! |
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| \G links between libraries |
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| |
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| : @lib ( lib -- ) |
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| \G obtains library handle |
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| cell+ dup 2 cells + count open-lib |
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| dup 0= abort" Library not found" swap ! ; |
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| |
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| : @proc ( lib addr -- ) |
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| \G obtains symbol address |
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| cell+ tuck 2 cells + count rot cell+ @ |
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| lib-sym dup 0= abort" Proc not found!" swap cell+ ! ; |
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| |
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| : proc, ( pars type lib addr -- ) |
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| \G allocates and initializes proc stub |
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| \G stub format: |
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| \G linked list in library |
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| \G address of proc |
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| \G offset in lcall1-table to call proc |
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| \G OS name of symbol as counted string |
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| here 2dup swap 2 cells + dup @ A, ! |
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| 2swap 1 and IF fcall-table ELSE icall-table THEN swap |
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| cells 2* + , 0 , bl sword string, @proc ; |
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| |
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| -1 Constant (addr) |
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| 0 Constant (int) |
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| 1 Constant (float) |
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| 2 Constant (void) |
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| 4 Constant (int...) |
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| 5 Constant (float...) |
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| 6 Constant (void...) |
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| |
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| : proc: ( pars type lib "name" "string" -- ) |
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| \G Creates a named proc stub |
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| Create proc, |
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| DOES> ( x1 .. xn -- r ) |
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| cell+ 2@ >r ; |
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| |
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| : vaproc: ( pars type lib "name" "string" -- ) |
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| \G Creates a named proc stub with variable arguments |
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| Create proc, |
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| DOES> ( x1 .. xn n -- r ) |
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| cell+ 2@ rot 2* cells + >r ; |
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| |
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| : (>void) >r ; |
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| |
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| : vproc: ( pars type lib "name" "string" -- ) |
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| \G Creates a named proc stub for void functions |
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| Create proc, |
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| DOES> ( x1 .. xn -- ) |
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| cell+ 2@ (>void) drop ; |
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| |
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| : vvaproc: ( pars type lib "name" "string" -- ) |
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| \G Creates a named proc stub with variable arguments, void return |
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| Create proc, |
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| DOES> ( x1 .. xn n -- ) |
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| cell+ 2@ rot 2* cells + (>void) drop ; |
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| |
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| : label: ( type lib "name" "string" -- ) |
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| \G Creates a named label stub |
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| -1 -rot Create proc, |
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| DOES> ( -- addr ) |
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| [ 2 cells ] Literal + @ ; |
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| |
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| : library ( "name" "file" -- ) |
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| \G loads library "file" and creates a proc defining word "name" |
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| \G library format: |
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| \G linked list of libraries |
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| \G library handle |
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| \G linked list of library's procs |
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| \G OS name of library as counted string |
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| Create here libs @ A, dup libs ! |
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| 0 , 0 A, bl sword string, @lib |
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| DOES> ( pars/ type -- ) |
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| over -1 = IF label: |
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| ELSE |
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| over 4 and IF |
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| over 2 and IF vvaproc: ELSE vaproc: THEN |
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| ELSE |
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| over 2 and IF vproc: ELSE proc: THEN |
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| THEN |
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| THEN ; |
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| |
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| : init-shared-libs ( -- ) |
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| defers 'cold libs |
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| 0 libs BEGIN @ dup WHILE dup REPEAT drop |
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| BEGIN dup WHILE >r |
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| r@ @lib |
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| r@ 2 cells + BEGIN @ dup WHILE r@ over @proc REPEAT |
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| drop rdrop |
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| REPEAT drop ; |
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| |
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| ' init-shared-libs IS 'cold |
|
