85 lines
2.1 KiB
Factor
85 lines
2.1 KiB
Factor
! Copyright (C) 2005 Slava Pestov.
|
|
! See http://factor.sf.net/license.txt for BSD license.
|
|
IN: compiler-backend
|
|
USING: alien arrays assembler compiler inference kernel
|
|
kernel-internals lists math memory namespaces words ;
|
|
|
|
GENERIC: push-return-reg ( reg-class -- )
|
|
GENERIC: pop-return-reg ( reg-class -- )
|
|
GENERIC: load-return-reg ( stack@ reg-class -- )
|
|
|
|
: drop-return-reg ESP swap reg-size ADD ;
|
|
|
|
M: int-regs push-return-reg drop EAX PUSH ;
|
|
M: int-regs pop-return-reg drop EAX POP ;
|
|
M: int-regs load-return-reg drop EAX ESP rot [+] MOV ;
|
|
|
|
: FSTP 4 = [ FSTPS ] [ FSTPL ] if ;
|
|
|
|
M: float-regs push-return-reg
|
|
ESP swap reg-size [ SUB ESP [] ] keep FSTP ;
|
|
|
|
: FLD 4 = [ FLDS ] [ FLDL ] if ;
|
|
|
|
M: float-regs pop-return-reg
|
|
ESP [] over reg-size FLD drop-return-reg ;
|
|
|
|
M: float-regs load-return-reg
|
|
reg-size >r ESP swap [+] r> FLD ;
|
|
|
|
M: %unbox generate-node
|
|
drop 2 input f compile-c-call 1 input push-return-reg ;
|
|
|
|
: struct-ptr/size ( func -- )
|
|
! Load struct size
|
|
2 input PUSH
|
|
! Load destination address
|
|
EAX PUSH
|
|
! Copy the struct to the stack
|
|
f compile-c-call
|
|
! Clean up
|
|
EAX POP
|
|
ECX POP ;
|
|
|
|
M: %unbox-struct generate-node ( vop -- )
|
|
drop
|
|
! Increase stack size
|
|
ESP 2 input SUB
|
|
! Save destination address in EAX
|
|
EAX ESP MOV
|
|
"unbox_value_struct" struct-ptr/size ;
|
|
|
|
M: %box-struct generate-node ( vop -- )
|
|
! Compute source address in EAX
|
|
EAX ESP MOV
|
|
EAX 4 ADD
|
|
drop "box_value_struct" struct-ptr/size ;
|
|
|
|
M: %box generate-node
|
|
drop
|
|
0 input [ 4 + 1 input load-return-reg ] when*
|
|
1 input push-return-reg
|
|
2 input f compile-c-call
|
|
1 input drop-return-reg ;
|
|
|
|
M: %alien-callback generate-node ( vop -- )
|
|
drop
|
|
EAX 0 input load-indirect
|
|
EAX PUSH
|
|
"run_callback" f compile-c-call
|
|
EAX POP ;
|
|
|
|
M: %callback-value generate-node ( vop -- )
|
|
drop
|
|
! Call the unboxer
|
|
1 input f compile-c-call
|
|
! Save return register
|
|
0 input push-return-reg
|
|
! Restore data/callstacks
|
|
"unnest_stacks" f compile-c-call
|
|
! Restore return register
|
|
0 input pop-return-reg ;
|
|
|
|
M: %cleanup generate-node
|
|
drop 0 input dup zero? [ drop ] [ ESP swap ADD ] if ;
|