23 lines
550 B
Factor
23 lines
550 B
Factor
|
! Copyright (C) 2005 Slava Pestov.
|
||
|
|
! See http://factor.sf.net/license.txt for BSD license.
|
||
|
|
IN: assembler
|
||
|
|
USING: errors kernel math memory words ;
|
||
|
|
|
||
|
|
: PUSH-DS
|
||
|
|
#! Push r18 on the data stack.
|
||
|
|
18 14 4 STWU ;
|
||
|
|
|
||
|
|
: w>h/h dup -16 shift HEX: ffff bitand >r HEX: ffff bitand r> ;
|
||
|
|
|
||
|
|
: immediate-literal ( obj -- )
|
||
|
|
#! PowerPC cannot load a 32 bit literal in one instruction.
|
||
|
|
address dup HEX: ffff <= [
|
||
|
|
18 LI
|
||
|
|
] [
|
||
|
|
w>h/h 18 LIS 18 18 rot ORI
|
||
|
|
] ifte PUSH-DS ;
|
||
|
|
|
||
|
|
: PUSH-CS
|
||
|
|
#! Push r18 on the return stack.
|
||
|
|
18 15 4 STWU ;
|