factor/library/compiler/x86/slots.factor

53 lines
1.5 KiB
Factor

! Copyright (C) 2005 Slava Pestov.
! See http://factor.sf.net/license.txt for BSD license.
IN: compiler-backend
USING: alien assembler compiler inference kernel
kernel-internals lists math memory namespaces sequences words ;
M: %slot generate-node ( vop -- )
dest/src
! turn tagged fixnum slot # into an offset, multiple of 4
dup 1 SHR
! compute slot address in 0 vop-out
dupd ADD
! load slot value in 0 vop-out
dup unit MOV ;
M: %fast-slot generate-node ( vop -- )
dup 0 vop-in swap 0 vop-out v>operand tuck >r 2list r>
swap MOV ;
: card-offset 1 getenv ;
M: %write-barrier generate-node ( vop -- )
#! Mark the card pointed to by vreg.
0 vop-in v>operand
dup card-bits SHR
card-offset 2list card-mark OR
0 rel-cards ;
M: %set-slot generate-node ( vop -- )
dup 2 vop-in v>operand over 1 vop-in v>operand
! turn tagged fixnum slot # into an offset, multiple of 4
over 1 SHR
! compute slot address in 1 vop-in
dupd ADD
! store new slot value
>r 0 vop-in v>operand r> unit swap MOV ;
M: %fast-set-slot generate-node ( vop -- )
dup 2 vop-in over 1 vop-in v>operand
swap 2list swap 0 vop-in v>operand MOV ;
: userenv@ ( n -- addr )
cell * "userenv" f dlsym + ;
M: %getenv generate-node ( vop -- )
dup 0 vop-out v>operand swap 0 vop-in
[ userenv@ unit MOV ] keep 0 rel-userenv ;
M: %setenv generate-node ( vop -- )
dup 1 vop-in
[ userenv@ unit swap 0 vop-in v>operand MOV ] keep
0 rel-userenv ;