1 ! Copyright (C) 2005, 2009 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors assocs sequences kernel combinators make math
4 math.order math.ranges system namespaces locals layouts words
5 alien alien.c-types literals cpu.architecture cpu.ppc.assembler
6 literals compiler.cfg.registers compiler.cfg.instructions
7 compiler.constants compiler.codegen compiler.codegen.fixup
8 compiler.cfg.intrinsics compiler.cfg.stack-frame ;
11 ! PowerPC register assignments:
12 ! r2-r12: integer vregs
14 ! r30: integer scratch
18 ! Add some methods to the assembler that are useful to us
19 M: label (B) [ 0 ] 2dip (B) rc-relative-ppc-3 label-fixup ;
20 M: label BC [ 0 BC ] dip rc-relative-ppc-2 label-fixup ;
22 enable-float-intrinsics
25 \ ##integer>float t frame-required? set-word-prop
26 \ ##float>integer t frame-required? set-word-prop
29 M: ppc machine-registers
31 { int-regs $[ 2 12 [a,b] 15 29 [a,b] append ] }
32 { double-float-regs $[ 0 29 [a,b] ] }
35 CONSTANT: scratch-reg 30
36 CONSTANT: fp-scratch-reg 30
38 M: ppc two-operand? f ;
40 M: ppc %load-immediate ( reg n -- ) swap LOAD ;
42 M: ppc %load-reference ( reg obj -- )
43 [ 0 swap LOAD32 ] [ rc-absolute-ppc-2/2 rel-immediate ] bi* ;
45 M: ppc %alien-global ( register symbol dll -- )
46 [ 0 swap LOAD32 ] 2dip rc-absolute-ppc-2/2 rel-dlsym ;
51 GENERIC: loc-reg ( loc -- reg )
53 M: ds-loc loc-reg drop ds-reg ;
54 M: rs-loc loc-reg drop rs-reg ;
56 : loc>operand ( loc -- reg n )
57 [ loc-reg ] [ n>> cells neg ] bi ; inline
59 M: ppc %peek loc>operand LWZ ;
60 M: ppc %replace loc>operand STW ;
62 : (%inc) ( n reg -- ) dup rot cells ADDI ; inline
64 M: ppc %inc-d ( n -- ) ds-reg (%inc) ;
65 M: ppc %inc-r ( n -- ) rs-reg (%inc) ;
67 HOOK: reserved-area-size os ( -- n )
69 ! The start of the stack frame contains the size of this frame
70 ! as well as the currently executing XT
71 : factor-area-size ( -- n ) 2 cells ; foldable
72 : next-save ( n -- i ) cell - ;
73 : xt-save ( n -- i ) 2 cells - ;
75 ! Next, we have the spill area as well as the FFI parameter area.
76 ! They overlap, since basic blocks with FFI calls will never
78 : param@ ( n -- x ) reserved-area-size + ; inline
80 : param-save-size ( -- n ) 8 cells ; foldable
83 reserved-area-size param-save-size + + ; inline
85 : spill-integer-base ( -- n )
86 stack-frame get spill-counts>> double-float-regs swap at
87 double-float-regs reg-size * ;
89 : spill-integer@ ( n -- offset )
90 cells spill-integer-base + param@ ;
92 : spill-float@ ( n -- offset )
93 double-float-regs reg-size * param@ ;
95 ! Some FP intrinsics need a temporary scratch area in the stack
96 ! frame, 8 bytes in size
97 : scratch@ ( n -- offset )
98 stack-frame get total-size>>
103 ! Finally we have the linkage area
104 HOOK: lr-save os ( -- n )
106 M: ppc stack-frame-size ( stack-frame -- i )
107 [ spill-counts>> [ swap reg-size * ] { } assoc>map sum ]
116 M: ppc %call ( word -- ) 0 BL rc-relative-ppc-3 rel-word-pic ;
118 M: ppc %jump ( word -- )
119 0 3 LOAD32 rc-absolute-ppc-2/2 rel-here
120 0 B rc-relative-ppc-3 rel-word-pic-tail ;
122 M: ppc %jump-label ( label -- ) B ;
123 M: ppc %return ( -- ) BLR ;
125 M:: ppc %dispatch ( src temp offset -- )
127 4 offset + cells rc-absolute-ppc-2/2 rel-here
132 M: ppc %dispatch-label ( word -- )
133 0 , rc-absolute-cell rel-word ;
135 :: (%slot) ( obj slot tag temp -- reg offset )
137 temp tag neg ; inline
139 : (%slot-imm) ( obj slot tag -- reg offset )
140 [ cells ] dip - ; inline
142 M: ppc %slot ( dst obj slot tag temp -- ) (%slot) LWZ ;
143 M: ppc %slot-imm ( dst obj slot tag -- ) (%slot-imm) LWZ ;
144 M: ppc %set-slot ( src obj slot tag temp -- ) (%slot) STW ;
145 M: ppc %set-slot-imm ( src obj slot tag -- ) (%slot-imm) STW ;
147 M:: ppc %string-nth ( dst src index temp -- )
151 dst temp string-offset LBZ
154 temp src string-aux-offset LWZ
157 temp temp byte-array-offset LHZ
163 M:: ppc %set-string-nth-fast ( ch obj index temp -- )
165 ch temp string-offset STB ;
168 M: ppc %add-imm ADDI ;
169 M: ppc %sub swap SUBF ;
170 M: ppc %sub-imm SUBI ;
172 M: ppc %mul-imm MULLI ;
174 M: ppc %and-imm ANDI ;
178 M: ppc %xor-imm XORI ;
179 M: ppc %shl-imm swapd SLWI ;
180 M: ppc %shr-imm swapd SRWI ;
181 M: ppc %sar-imm SRAWI ;
184 : %alien-invoke-tail ( func dll -- )
185 [ scratch-reg ] 2dip %alien-global scratch-reg MTCTR BCTR ;
187 :: exchange-regs ( r1 r2 -- )
192 : ?MR ( r1 r2 -- ) 2dup = [ 2drop ] [ MR ] if ;
194 :: move>args ( src1 src2 -- )
196 { [ src1 4 = ] [ 3 src2 ?MR 3 4 exchange-regs ] }
197 { [ src1 3 = ] [ 4 src2 ?MR ] }
198 { [ src2 3 = ] [ 4 src1 ?MR 3 4 exchange-regs ] }
199 { [ src2 4 = ] [ 3 src1 ?MR ] }
200 [ 3 src1 MR 4 src2 MR ]
207 :: overflow-template ( src1 src2 insn func -- )
208 "no-overflow" define-label
210 scratch-reg src2 src1 insn call
211 scratch-reg ds-reg 0 STW
212 "no-overflow" get BNO
214 %prepare-alien-invoke
216 "no-overflow" resolve-label ; inline
218 :: overflow-template-tail ( src1 src2 insn func -- )
219 "overflow" define-label
221 scratch-reg src2 src1 insn call
223 scratch-reg ds-reg 0 STW
225 "overflow" resolve-label
227 %prepare-alien-invoke
228 func f %alien-invoke-tail ; inline
230 M: ppc %fixnum-add ( src1 src2 -- )
231 [ ADDO. ] "overflow_fixnum_add" overflow-template ;
233 M: ppc %fixnum-add-tail ( src1 src2 -- )
234 [ ADDO. ] "overflow_fixnum_add" overflow-template-tail ;
236 M: ppc %fixnum-sub ( src1 src2 -- )
237 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template ;
239 M: ppc %fixnum-sub-tail ( src1 src2 -- )
240 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template-tail ;
242 M:: ppc %fixnum-mul ( src1 src2 temp1 temp2 -- )
243 "no-overflow" define-label
245 temp1 src1 tag-bits get SRAWI
246 temp2 temp1 src2 MULLWO.
248 "no-overflow" get BNO
249 src2 src2 tag-bits get SRAWI
251 %prepare-alien-invoke
252 "overflow_fixnum_multiply" f %alien-invoke
253 "no-overflow" resolve-label ;
255 M:: ppc %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
256 "overflow" define-label
258 temp1 src1 tag-bits get SRAWI
259 temp2 temp1 src2 MULLWO.
263 "overflow" resolve-label
264 src2 src2 tag-bits get SRAWI
266 %prepare-alien-invoke
267 "overflow_fixnum_multiply" f %alien-invoke-tail ;
269 : bignum@ ( n -- offset ) cells bignum tag-number - ; inline
271 M:: ppc %integer>bignum ( dst src temp -- )
274 dst 0 >bignum %load-reference
275 ! Is it zero? Then just go to the end and return this zero
279 dst 4 cells bignum temp %allot
282 temp dst 1 bignum@ STW
285 temp temp cell-bits 1- SRAWI
288 temp dst 2 bignum@ STW
289 ! Make negative value positive
295 temp dst 3 bignum@ STW
299 M:: ppc %bignum>integer ( dst src temp -- )
302 temp src 1 bignum@ LWZ
303 ! if the length is 1, its just the sign and nothing else,
306 0 temp 1 tag-fixnum CMPI
309 dst src 3 bignum@ LWZ
311 temp src 2 bignum@ LWZ
312 ! branchless arithmetic: we want to turn 0 into 1,
317 ! multiply value by sign
322 M: ppc %add-float FADD ;
323 M: ppc %sub-float FSUB ;
324 M: ppc %mul-float FMUL ;
325 M: ppc %div-float FDIV ;
327 M:: ppc %integer>float ( dst src -- )
328 HEX: 4330 scratch-reg LIS
329 scratch-reg 1 0 scratch@ STW
331 scratch-reg dup HEX: 8000 XORIS
332 scratch-reg 1 4 scratch@ STW
334 scratch-reg 4503601774854144.0 %load-reference
335 fp-scratch-reg scratch-reg float-offset LFD
336 dst dst fp-scratch-reg FSUB ;
338 M:: ppc %float>integer ( dst src -- )
339 fp-scratch-reg src FCTIWZ
340 fp-scratch-reg 1 0 scratch@ STFD
341 dst 1 4 scratch@ LWZ ;
343 M: ppc %copy ( dst src -- ) MR ;
345 M: ppc %copy-float ( dst src -- ) FMR ;
347 M: ppc %unbox-float ( dst src -- ) float-offset LFD ;
349 M:: ppc %box-float ( dst src temp -- )
350 dst 16 float temp %allot
351 src dst float-offset STFD ;
353 M:: ppc %unbox-any-c-ptr ( dst src temp -- )
355 { "is-byte-array" "end" "start" } [ define-label ] each
356 ! Address is computed in dst
358 ! Load object into scratch-reg
360 ! We come back here with displaced aliens
361 "start" resolve-label
363 0 scratch-reg \ f tag-number CMPI
366 ! Is the object an alien?
367 0 scratch-reg header-offset LWZ
368 0 0 alien type-number tag-fixnum CMPI
369 "is-byte-array" get BNE
370 ! If so, load the offset
371 0 scratch-reg alien-offset LWZ
372 ! Add it to address being computed
374 ! Now recurse on the underlying alien
375 scratch-reg scratch-reg underlying-alien-offset LWZ
377 "is-byte-array" resolve-label
378 ! Add byte array address to address being computed
379 dst dst scratch-reg ADD
380 ! Add an offset to start of byte array's data area
381 dst dst byte-array-offset ADDI
385 : alien@ ( n -- n' ) cells object tag-number - ;
387 M:: ppc %box-alien ( dst src temp -- )
390 dst \ f tag-number %load-immediate
393 dst 4 cells alien temp %allot
397 temp \ f tag-number %load-immediate
398 temp dst 1 alien@ STW
399 ! Store underlying-alien slot
400 temp dst 2 alien@ STW
404 M: ppc %alien-unsigned-1 0 LBZ ;
405 M: ppc %alien-unsigned-2 0 LHZ ;
407 M: ppc %alien-signed-1 dupd 0 LBZ dup EXTSB ;
408 M: ppc %alien-signed-2 0 LHA ;
410 M: ppc %alien-cell 0 LWZ ;
412 M: ppc %alien-float 0 LFS ;
413 M: ppc %alien-double 0 LFD ;
415 M: ppc %set-alien-integer-1 swap 0 STB ;
416 M: ppc %set-alien-integer-2 swap 0 STH ;
418 M: ppc %set-alien-cell swap 0 STW ;
420 M: ppc %set-alien-float swap 0 STFS ;
421 M: ppc %set-alien-double swap 0 STFD ;
423 : load-zone-ptr ( reg -- )
424 "nursery" f %alien-global ;
426 : load-allot-ptr ( nursery-ptr allot-ptr -- )
427 [ drop load-zone-ptr ] [ swap 4 LWZ ] 2bi ;
429 :: inc-allot-ptr ( nursery-ptr allot-ptr n -- )
430 scratch-reg allot-ptr n 8 align ADDI
431 scratch-reg nursery-ptr 4 STW ;
433 :: store-header ( dst class -- )
434 class type-number tag-fixnum scratch-reg LI
435 scratch-reg dst 0 STW ;
437 : store-tagged ( dst tag -- )
438 dupd tag-number ORI ;
440 M:: ppc %allot ( dst size class nursery-ptr -- )
441 nursery-ptr dst load-allot-ptr
442 nursery-ptr dst size inc-allot-ptr
443 dst class store-header
444 dst class store-tagged ;
446 : load-cards-offset ( dst -- )
447 [ "cards_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
449 : load-decks-offset ( dst -- )
450 [ "decks_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
452 M:: ppc %write-barrier ( src card# table -- )
453 card-mark scratch-reg LI
456 table load-cards-offset
457 src card# card-bits SRWI
458 table scratch-reg card# STBX
461 table load-decks-offset
462 src card# deck-bits SRWI
463 table scratch-reg card# STBX ;
468 11 12 cell LWZ ! nursery.here -> r11
469 12 12 3 cells LWZ ! nursery.end -> r12
470 11 11 1024 ADDI ! add ALLOT_BUFFER_ZONE to here
471 11 0 12 CMP ! is here >= end?
473 %prepare-alien-invoke
474 "minor_gc" f %alien-invoke
475 "end" resolve-label ;
477 M: ppc %prologue ( n -- )
478 0 11 LOAD32 rc-absolute-ppc-2/2 rel-this
481 [ [ 1 1 ] dip neg ADDI ]
482 [ [ 11 1 ] dip xt-save STW ]
484 [ [ 11 1 ] dip next-save STW ]
485 [ [ 0 1 ] dip lr-save + STW ]
488 M: ppc %epilogue ( n -- )
489 #! At the end of each word that calls a subroutine, we store
490 #! the previous link register value in r0 by popping it off
491 #! the stack, set the link register to the contents of r0,
492 #! and jump to the link register.
493 [ [ 0 1 ] dip lr-save + LWZ ]
494 [ [ 1 1 ] dip ADDI ] bi
497 :: (%boolean) ( dst temp word -- )
499 dst \ f tag-number %load-immediate
500 "end" get word execute
501 dst \ t %load-reference
502 "end" get resolve-label ; inline
504 : %boolean ( dst temp cc -- )
506 { cc< [ \ BLT (%boolean) ] }
507 { cc<= [ \ BLE (%boolean) ] }
508 { cc> [ \ BGT (%boolean) ] }
509 { cc>= [ \ BGE (%boolean) ] }
510 { cc= [ \ BEQ (%boolean) ] }
511 { cc/= [ \ BNE (%boolean) ] }
514 : (%compare) ( src1 src2 -- ) [ 0 ] dip CMP ; inline
515 : (%compare-imm) ( src1 src2 -- ) [ 0 ] 2dip CMPI ; inline
516 : (%compare-float) ( src1 src2 -- ) [ 0 ] dip FCMPU ; inline
518 M: ppc %compare (%compare) %boolean ;
519 M: ppc %compare-imm (%compare-imm) %boolean ;
520 M: ppc %compare-float (%compare-float) %boolean ;
522 : %branch ( label cc -- )
532 M: ppc %compare-branch (%compare) %branch ;
533 M: ppc %compare-imm-branch (%compare-imm) %branch ;
534 M: ppc %compare-float-branch (%compare-float) %branch ;
536 M: ppc %spill-integer ( src n -- ) spill-integer@ 1 swap STW ;
537 M: ppc %reload-integer ( dst n -- ) spill-integer@ 1 swap LWZ ;
539 M: ppc %spill-float ( src n -- ) spill-float@ 1 swap STFD ;
540 M: ppc %reload-float ( dst n -- ) spill-float@ 1 swap LFD ;
544 M: int-regs return-reg drop 3 ;
545 M: int-regs param-regs drop { 3 4 5 6 7 8 9 10 } ;
546 M: float-regs return-reg drop 1 ;
548 M: int-regs %save-param-reg drop 1 rot local@ STW ;
549 M: int-regs %load-param-reg drop 1 rot local@ LWZ ;
551 GENERIC: STF ( src dst off reg-class -- )
553 M: single-float-regs STF drop STFS ;
554 M: double-float-regs STF drop STFD ;
556 M: float-regs %save-param-reg [ 1 rot local@ ] dip STF ;
558 GENERIC: LF ( dst src off reg-class -- )
560 M: single-float-regs LF drop LFS ;
561 M: double-float-regs LF drop LFD ;
563 M: float-regs %load-param-reg [ 1 rot local@ ] dip LF ;
565 M: stack-params %load-param-reg ( stack reg reg-class -- )
566 drop [ 0 1 rot local@ LWZ 0 1 ] dip param@ STW ;
568 : next-param@ ( n -- x ) param@ stack-frame get total-size>> + ;
570 M: stack-params %save-param-reg ( stack reg reg-class -- )
571 #! Funky. Read the parameter from the caller's stack frame.
572 #! This word is used in callbacks
574 [ 0 1 ] dip next-param@ LWZ
575 [ 0 1 ] dip local@ STW ;
577 M: ppc %prepare-unbox ( -- )
578 ! First parameter is top of stack
580 ds-reg dup cell SUBI ;
582 M: ppc %unbox ( n reg-class func -- )
583 ! Value must be in r3
586 ! Store the return value on the C stack
587 over [ [ return-reg ] keep %save-param-reg ] [ 2drop ] if ;
589 M: ppc %unbox-long-long ( n func -- )
590 ! Value must be in r3:r4
593 ! Store the return value on the C stack
595 [ [ 3 1 ] dip local@ STW ]
596 [ [ 4 1 ] dip cell + local@ STW ] bi
599 M: ppc %unbox-large-struct ( n c-type -- )
600 ! Value must be in r3
601 ! Compute destination address and load struct size
602 [ [ 4 1 ] dip local@ ADDI ] [ heap-size 5 LI ] bi*
604 "to_value_struct" f %alien-invoke ;
606 M: ppc %box ( n reg-class func -- )
607 ! If the source is a stack location, load it into freg #0.
608 ! If the source is f, then we assume the value is already in
610 [ over [ 0 over param-reg swap %load-param-reg ] [ 2drop ] if ] dip
613 M: ppc %box-long-long ( n func -- )
616 [ [ 3 1 ] dip local@ LWZ ]
617 [ [ 4 1 ] dip cell + local@ LWZ ] bi
619 ] dip f %alien-invoke ;
621 : struct-return@ ( n -- n )
622 [ stack-frame get params>> ] unless* local@ ;
624 M: ppc %prepare-box-struct ( -- )
625 #! Compute target address for value struct return
626 3 1 f struct-return@ ADDI
629 M: ppc %box-large-struct ( n c-type -- )
630 ! If n = f, then we're boxing a returned struct
631 ! Compute destination address and load struct size
632 [ [ 3 1 ] dip struct-return@ ADDI ] [ heap-size 4 LI ] bi*
634 "box_value_struct" f %alien-invoke ;
636 M: ppc %prepare-alien-invoke
637 #! Save Factor stack pointers in case the C code calls a
638 #! callback which does a GC, which must reliably trace
640 scratch-reg "stack_chain" f %alien-global
641 scratch-reg scratch-reg 0 LWZ
643 ds-reg scratch-reg 8 STW
644 rs-reg scratch-reg 12 STW ;
646 M: ppc %alien-invoke ( symbol dll -- )
647 [ 11 ] 2dip %alien-global 11 MTLR BLRL ;
649 M: ppc %alien-callback ( quot -- )
650 3 swap %load-reference "c_to_factor" f %alien-invoke ;
652 M: ppc %prepare-alien-indirect ( -- )
653 "unbox_alien" f %alien-invoke
656 M: ppc %alien-indirect ( -- )
659 M: ppc %callback-value ( ctype -- )
660 ! Save top of data stack
663 ! Restore data/call/retain stacks
664 "unnest_stacks" f %alien-invoke
665 ! Restore top of data stack
667 ! Unbox former top of data stack to return registers
670 M: ppc small-enough? ( n -- ? ) -32768 32767 between? ;
672 M: ppc return-struct-in-registers? ( c-type -- ? )
673 c-type return-in-registers?>> ;
675 M: ppc %box-small-struct ( c-type -- )
676 #! Box a <= 16-byte struct returned in r3:r4:r5:r6
678 "box_medium_struct" f %alien-invoke ;
680 : %unbox-struct-1 ( -- )
681 ! Alien must be in r3.
682 "alien_offset" f %alien-invoke
685 : %unbox-struct-2 ( -- )
686 ! Alien must be in r3.
687 "alien_offset" f %alien-invoke
691 : %unbox-struct-4 ( -- )
692 ! Alien must be in r3.
693 "alien_offset" f %alien-invoke
699 M: ppc %unbox-small-struct ( size -- )
700 #! Alien must be in EAX.
701 heap-size cell align cell /i {
702 { 1 [ %unbox-struct-1 ] }
703 { 2 [ %unbox-struct-2 ] }
704 { 4 [ %unbox-struct-4 ] }
710 { [ os macosx? ] [ "cpu.ppc.macosx" require ] }
711 { [ os linux? ] [ "cpu.ppc.linux" require ] }
714 "complex-double" c-type t >>return-in-registers? drop