1 ! Copyright (C) 2006, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: kernel cpu.ppc.architecture cpu.ppc.assembler
4 kernel.private namespaces math sequences generic arrays
5 generator generator.registers generator.fixup system layouts
6 cpu.architecture alien ;
9 : load-zone-ptr ( reg -- )
10 >r "nursery" f r> %load-dlsym ;
12 : %allot ( header size -- )
13 #! Store a pointer to 'size' bytes allocated from the
15 8 align ! align the size
16 12 load-zone-ptr ! nusery -> r12
17 11 12 cell LWZ ! nursery.here -> r11
18 11 11 pick ADDI ! increment r11
19 11 12 cell STW ! r11 -> nursery.here
20 11 11 rot SUBI ! old value
21 type-number tag-fixnum 12 LI ! compute header
22 12 11 0 STW ! store header
25 : %store-tagged ( reg tag -- )
26 >r dup fresh-object v>operand 11 r> tag-number ORI ;
31 11 12 cell LWZ ! nursery.here -> r11
32 12 12 3 cells LWZ ! nursery.end -> r12
33 11 11 1024 ADDI ! add ALLOT_BUFFER_ZONE to here
34 11 0 12 CMP ! is here >= end?
38 "minor_gc" f %alien-invoke
41 : %allot-float ( reg -- )
42 #! exits with tagged ptr to object in r12, untagged in r11
45 12 11 float tag-number ORI
48 M: ppc %box-float ( dst src -- )
49 [ v>operand ] bi@ %allot-float 12 MR ;
51 : %allot-bignum ( #digits -- )
52 #! 1 cell header, 1 cell length, 1 cell sign, + digits
53 #! length is the # of digits + sign
54 bignum over 3 + cells %allot
55 1+ v>operand 12 LI ! compute the length
56 12 11 cell STW ! store the length
59 : %allot-bignum-signed-1 ( reg -- )
60 #! on entry, reg is a 30-bit quantity sign-extended to
62 #! exits with tagged ptr to bignum in reg
64 { "end" "non-zero" "pos" "store" } [ define-label ] each
66 0 over v>operand 0 CMPI
68 0 >bignum over load-literal
71 "non-zero" resolve-label
73 ! is the fixnum negative?
74 0 over v>operand 0 CMPI
80 dup v>operand dup -1 MULI
88 dup v>operand 11 3 cells STW
89 ! tag the bignum, store it in reg
94 M: ppc %box-alien ( dst src -- )
95 { "end" "f" } [ define-label ] each
96 0 over v>operand 0 CMPI
100 v>operand 11 3 cells STW
104 ! Store underlying-alien slot
106 ! Store tagged ptr in reg
107 dup object %store-tagged
110 f v>operand swap v>operand LI
111 "end" resolve-label ;