version 1.4, 1998/12/08 22:02:46
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version 1.7, 2003/08/15 21:45:46
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\ lib.fs shared library support package 11may97py |
\ lib.fs shared library support package 11may97py |
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\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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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. |
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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 |
legacy on |
NIL swap NIL swap NIL swap NIL swap NIL swap NIL swap icall20 ;s [ |
[ELSE] |
Create fcall-table |
include oldlib.fs |
] fcall0 ;s fcall1 ;s fcall2 ;s fcall3 ;s fcall4 ;s fcall5 ;s fcall6 ;s |
[THEN] |
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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: @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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: @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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: 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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-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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: 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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: 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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: (>void) >r ; |
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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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: 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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: 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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: 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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: 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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' init-shared-libs IS 'cold |
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