factor/library/compiler/assembler.factor

74 lines
2.4 KiB
Factor

! :folding=indent:collapseFolds=1:
! $Id$
!
! Copyright (C) 2004, 2005 Slava Pestov.
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions are met:
!
! 1. Redistributions of source code must retain the above copyright notice,
! this list of conditions and the following disclaimer.
!
! 2. Redistributions in binary form must reproduce the above copyright notice,
! this list of conditions and the following disclaimer in the documentation
! and/or other materials provided with the distribution.
!
! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
IN: assembler
USE: alien
USE: math
USE: kernel
USE: hashtables
USE: namespaces
SYMBOL: interned-literals
: cell 4 ; inline
: compiled-header HEX: 01c3babe ; inline
: set-compiled-byte ( n addr -- )
<alien> 0 set-alien-1 ; inline
: set-compiled-cell ( n addr -- )
<alien> 0 set-alien-cell ; inline
: compile-aligned ( n -- )
compiled-offset cell 2 * align set-compiled-offset ; inline
: intern-literal ( obj -- lit# )
dup interned-literals get hash [
[
address
literal-top set-compiled-cell
literal-top dup cell + set-literal-top
dup
] keep interned-literals get set-hash
] ?unless ;
: compile-byte ( n -- )
compiled-offset set-compiled-byte
compiled-offset 1 + set-compiled-offset ; inline
: compile-cell ( n -- )
compiled-offset set-compiled-cell
compiled-offset cell + set-compiled-offset ; inline
: begin-assembly ( -- code-len-fixup reloc-len-fixup )
compiled-header compile-cell
compiled-offset 0 compile-cell
compiled-offset 0 compile-cell ;
: init-assembler ( -- )
global [ <namespace> interned-literals set ] bind ;