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.accessors alien.c-types literals cpu.architecture
6 cpu.ppc.assembler cpu.ppc.assembler.backend compiler.cfg.registers
7 compiler.cfg.instructions compiler.constants compiler.codegen
8 compiler.codegen.fixup compiler.cfg.intrinsics
9 compiler.cfg.stack-frame compiler.cfg.build-stack-frame
11 FROM: cpu.ppc.assembler => B ;
14 ! PowerPC register assignments:
15 ! r2-r12: integer vregs
17 ! r30: integer scratch
21 ! Add some methods to the assembler that are useful to us
22 M: label (B) [ 0 ] 2dip (B) rc-relative-ppc-3 label-fixup ;
23 M: label BC [ 0 BC ] dip rc-relative-ppc-2 label-fixup ;
25 enable-float-intrinsics
28 \ ##integer>float t frame-required? set-word-prop
29 \ ##float>integer t frame-required? set-word-prop
32 M: ppc machine-registers
34 { int-regs $[ 2 12 [a,b] 15 29 [a,b] append ] }
35 { double-float-regs $[ 0 29 [a,b] ] }
38 CONSTANT: scratch-reg 30
39 CONSTANT: fp-scratch-reg 30
41 M: ppc two-operand? f ;
43 M: ppc %load-immediate ( reg n -- ) swap LOAD ;
45 M: ppc %load-reference ( reg obj -- )
46 [ 0 swap LOAD32 ] [ rc-absolute-ppc-2/2 rel-immediate ] bi* ;
48 M: ppc %alien-global ( register symbol dll -- )
49 [ 0 swap LOAD32 ] 2dip rc-absolute-ppc-2/2 rel-dlsym ;
54 GENERIC: loc-reg ( loc -- reg )
56 M: ds-loc loc-reg drop ds-reg ;
57 M: rs-loc loc-reg drop rs-reg ;
59 : loc>operand ( loc -- reg n )
60 [ loc-reg ] [ n>> cells neg ] bi ; inline
62 M: ppc %peek loc>operand LWZ ;
63 M: ppc %replace loc>operand STW ;
65 : (%inc) ( n reg -- ) dup rot cells ADDI ; inline
67 M: ppc %inc-d ( n -- ) ds-reg (%inc) ;
68 M: ppc %inc-r ( n -- ) rs-reg (%inc) ;
70 HOOK: reserved-area-size os ( -- n )
72 ! The start of the stack frame contains the size of this frame
73 ! as well as the currently executing XT
74 : factor-area-size ( -- n ) 2 cells ; foldable
75 : next-save ( n -- i ) cell - ;
76 : xt-save ( n -- i ) 2 cells - ;
78 ! Next, we have the spill area as well as the FFI parameter area.
79 ! They overlap, since basic blocks with FFI calls will never
81 : param@ ( n -- x ) reserved-area-size + ; inline
83 : param-save-size ( -- n ) 8 cells ; foldable
86 reserved-area-size param-save-size + + ; inline
88 : spill-integer-base ( -- n )
89 stack-frame get spill-counts>> double-float-regs swap at
90 double-float-regs reg-size * ;
92 : spill-integer@ ( n -- offset )
93 cells spill-integer-base + param@ ;
95 : spill-float@ ( n -- offset )
96 double-float-regs reg-size * param@ ;
98 ! Some FP intrinsics need a temporary scratch area in the stack
99 ! frame, 8 bytes in size
100 : scratch@ ( n -- offset )
101 stack-frame get total-size>>
106 ! Finally we have the linkage area
107 HOOK: lr-save os ( -- n )
109 M: ppc stack-frame-size ( stack-frame -- i )
110 [ spill-counts>> [ swap reg-size * ] { } assoc>map sum ]
119 M: ppc %call ( word -- ) 0 BL rc-relative-ppc-3 rel-word-pic ;
121 M: ppc %jump ( word -- )
122 0 6 LOAD32 8 rc-absolute-ppc-2/2 rel-here
123 0 B rc-relative-ppc-3 rel-word-pic-tail ;
125 M: ppc %jump-label ( label -- ) B ;
126 M: ppc %return ( -- ) BLR ;
128 M:: ppc %dispatch ( src temp -- )
130 4 cells rc-absolute-ppc-2/2 rel-here
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 ;
465 M:: ppc %gc ( temp1 temp2 gc-roots gc-root-count -- )
469 temp2 temp2 3 cells LWZ
470 temp1 temp1 1024 ADDI ! add ALLOT_BUFFER_ZONE to here
471 temp1 0 temp2 CMP ! is here >= end?
473 %prepare-alien-invoke
476 "inline_gc" f %alien-invoke
477 "end" resolve-label ;
479 M: ppc %prologue ( n -- )
480 0 11 LOAD32 rc-absolute-ppc-2/2 rel-this
483 [ [ 1 1 ] dip neg ADDI ]
484 [ [ 11 1 ] dip xt-save STW ]
486 [ [ 11 1 ] dip next-save STW ]
487 [ [ 0 1 ] dip lr-save + STW ]
490 M: ppc %epilogue ( n -- )
491 #! At the end of each word that calls a subroutine, we store
492 #! the previous link register value in r0 by popping it off
493 #! the stack, set the link register to the contents of r0,
494 #! and jump to the link register.
495 [ [ 0 1 ] dip lr-save + LWZ ]
496 [ [ 1 1 ] dip ADDI ] bi
499 :: (%boolean) ( dst temp word -- )
501 dst \ f tag-number %load-immediate
502 "end" get word execute
503 dst \ t %load-reference
504 "end" get resolve-label ; inline
506 : %boolean ( dst temp cc -- )
508 { cc< [ \ BLT (%boolean) ] }
509 { cc<= [ \ BLE (%boolean) ] }
510 { cc> [ \ BGT (%boolean) ] }
511 { cc>= [ \ BGE (%boolean) ] }
512 { cc= [ \ BEQ (%boolean) ] }
513 { cc/= [ \ BNE (%boolean) ] }
516 : (%compare) ( src1 src2 -- ) [ 0 ] dip CMP ; inline
517 : (%compare-imm) ( src1 src2 -- ) [ 0 ] 2dip CMPI ; inline
518 : (%compare-float) ( src1 src2 -- ) [ 0 ] dip FCMPU ; inline
520 M: ppc %compare (%compare) %boolean ;
521 M: ppc %compare-imm (%compare-imm) %boolean ;
522 M: ppc %compare-float (%compare-float) %boolean ;
524 : %branch ( label cc -- )
534 M: ppc %compare-branch (%compare) %branch ;
535 M: ppc %compare-imm-branch (%compare-imm) %branch ;
536 M: ppc %compare-float-branch (%compare-float) %branch ;
538 M: ppc %spill-integer ( src n -- ) spill-integer@ 1 swap STW ;
539 M: ppc %reload-integer ( dst n -- ) spill-integer@ 1 swap LWZ ;
541 M: ppc %spill-float ( src n -- ) spill-float@ 1 swap STFD ;
542 M: ppc %reload-float ( dst n -- ) spill-float@ 1 swap LFD ;
546 M: int-regs return-reg drop 3 ;
547 M: int-regs param-regs drop { 3 4 5 6 7 8 9 10 } ;
548 M: float-regs return-reg drop 1 ;
550 M: int-regs %save-param-reg drop 1 rot local@ STW ;
551 M: int-regs %load-param-reg drop 1 rot local@ LWZ ;
553 GENERIC: STF ( src dst off reg-class -- )
555 M: single-float-regs STF drop STFS ;
556 M: double-float-regs STF drop STFD ;
558 M: float-regs %save-param-reg [ 1 rot local@ ] dip STF ;
560 GENERIC: LF ( dst src off reg-class -- )
562 M: single-float-regs LF drop LFS ;
563 M: double-float-regs LF drop LFD ;
565 M: float-regs %load-param-reg [ 1 rot local@ ] dip LF ;
567 M: stack-params %load-param-reg ( stack reg reg-class -- )
568 drop [ 0 1 rot local@ LWZ 0 1 ] dip param@ STW ;
570 : next-param@ ( n -- x ) param@ stack-frame get total-size>> + ;
572 M: stack-params %save-param-reg ( stack reg reg-class -- )
573 #! Funky. Read the parameter from the caller's stack frame.
574 #! This word is used in callbacks
576 [ 0 1 ] dip next-param@ LWZ
577 [ 0 1 ] dip local@ STW ;
579 M: ppc %prepare-unbox ( -- )
580 ! First parameter is top of stack
582 ds-reg dup cell SUBI ;
584 M: ppc %unbox ( n reg-class func -- )
585 ! Value must be in r3
588 ! Store the return value on the C stack
589 over [ [ return-reg ] keep %save-param-reg ] [ 2drop ] if ;
591 M: ppc %unbox-long-long ( n func -- )
592 ! Value must be in r3:r4
595 ! Store the return value on the C stack
597 [ [ 3 1 ] dip local@ STW ]
598 [ [ 4 1 ] dip cell + local@ STW ] bi
601 M: ppc %unbox-large-struct ( n c-type -- )
602 ! Value must be in r3
603 ! Compute destination address and load struct size
604 [ [ 4 1 ] dip local@ ADDI ] [ heap-size 5 LI ] bi*
606 "to_value_struct" f %alien-invoke ;
608 M: ppc %box ( n reg-class func -- )
609 ! If the source is a stack location, load it into freg #0.
610 ! If the source is f, then we assume the value is already in
612 [ over [ 0 over param-reg swap %load-param-reg ] [ 2drop ] if ] dip
615 M: ppc %box-long-long ( n func -- )
618 [ [ 3 1 ] dip local@ LWZ ]
619 [ [ 4 1 ] dip cell + local@ LWZ ] bi
621 ] dip f %alien-invoke ;
623 : struct-return@ ( n -- n )
624 [ stack-frame get params>> ] unless* local@ ;
626 M: ppc %prepare-box-struct ( -- )
627 #! Compute target address for value struct return
628 3 1 f struct-return@ ADDI
631 M: ppc %box-large-struct ( n c-type -- )
632 ! If n = f, then we're boxing a returned struct
633 ! Compute destination address and load struct size
634 [ [ 3 1 ] dip struct-return@ ADDI ] [ heap-size 4 LI ] bi*
636 "box_value_struct" f %alien-invoke ;
638 M: ppc %prepare-alien-invoke
639 #! Save Factor stack pointers in case the C code calls a
640 #! callback which does a GC, which must reliably trace
642 scratch-reg "stack_chain" f %alien-global
643 scratch-reg scratch-reg 0 LWZ
645 ds-reg scratch-reg 8 STW
646 rs-reg scratch-reg 12 STW ;
648 M: ppc %alien-invoke ( symbol dll -- )
649 [ 11 ] 2dip %alien-global 11 MTLR BLRL ;
651 M: ppc %alien-callback ( quot -- )
652 3 swap %load-reference "c_to_factor" f %alien-invoke ;
654 M: ppc %prepare-alien-indirect ( -- )
655 "unbox_alien" f %alien-invoke
658 M: ppc %alien-indirect ( -- )
661 M: ppc %callback-value ( ctype -- )
662 ! Save top of data stack
665 ! Restore data/call/retain stacks
666 "unnest_stacks" f %alien-invoke
667 ! Restore top of data stack
669 ! Unbox former top of data stack to return registers
672 M: ppc small-enough? ( n -- ? ) -32768 32767 between? ;
674 M: ppc return-struct-in-registers? ( c-type -- ? )
675 c-type return-in-registers?>> ;
677 M: ppc %box-small-struct ( c-type -- )
678 #! Box a <= 16-byte struct returned in r3:r4:r5:r6
680 "box_medium_struct" f %alien-invoke ;
682 : %unbox-struct-1 ( -- )
683 ! Alien must be in r3.
684 "alien_offset" f %alien-invoke
687 : %unbox-struct-2 ( -- )
688 ! Alien must be in r3.
689 "alien_offset" f %alien-invoke
693 : %unbox-struct-4 ( -- )
694 ! Alien must be in r3.
695 "alien_offset" f %alien-invoke
701 M: ppc %unbox-small-struct ( size -- )
702 #! Alien must be in EAX.
703 heap-size cell align cell /i {
704 { 1 [ %unbox-struct-1 ] }
705 { 2 [ %unbox-struct-2 ] }
706 { 4 [ %unbox-struct-4 ] }
712 { [ os macosx? ] [ "cpu.ppc.macosx" require ] }
713 { [ os linux? ] [ "cpu.ppc.linux" require ] }
716 "complex-double" c-type t >>return-in-registers? drop
720 [ alien-unsigned-4 c-bool> ] >>getter
721 [ [ >c-bool ] 2dip set-alien-unsigned-4 ] >>setter
724 "box_boolean" >>boxer
725 "to_boolean" >>unboxer
726 "bool" define-primitive-type
727 ] with-compilation-unit