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 literals compiler.cfg.registers
7 compiler.cfg.instructions compiler.constants compiler.codegen
8 compiler.codegen.fixup compiler.cfg.intrinsics
9 compiler.cfg.stack-frame compiler.units ;
10 FROM: cpu.ppc.assembler => B ;
13 ! PowerPC register assignments:
14 ! r2-r12: integer vregs
16 ! r30: integer scratch
20 ! Add some methods to the assembler that are useful to us
21 M: label (B) [ 0 ] 2dip (B) rc-relative-ppc-3 label-fixup ;
22 M: label BC [ 0 BC ] dip rc-relative-ppc-2 label-fixup ;
24 enable-float-intrinsics
27 \ ##integer>float t frame-required? set-word-prop
28 \ ##float>integer t frame-required? set-word-prop
31 M: ppc machine-registers
33 { int-regs $[ 2 12 [a,b] 15 29 [a,b] append ] }
34 { double-float-regs $[ 0 29 [a,b] ] }
37 CONSTANT: scratch-reg 30
38 CONSTANT: fp-scratch-reg 30
40 M: ppc two-operand? f ;
42 M: ppc %load-immediate ( reg n -- ) swap LOAD ;
44 M: ppc %load-reference ( reg obj -- )
45 [ 0 swap LOAD32 ] [ rc-absolute-ppc-2/2 rel-immediate ] bi* ;
47 M: ppc %alien-global ( register symbol dll -- )
48 [ 0 swap LOAD32 ] 2dip rc-absolute-ppc-2/2 rel-dlsym ;
53 GENERIC: loc-reg ( loc -- reg )
55 M: ds-loc loc-reg drop ds-reg ;
56 M: rs-loc loc-reg drop rs-reg ;
58 : loc>operand ( loc -- reg n )
59 [ loc-reg ] [ n>> cells neg ] bi ; inline
61 M: ppc %peek loc>operand LWZ ;
62 M: ppc %replace loc>operand STW ;
64 : (%inc) ( n reg -- ) dup rot cells ADDI ; inline
66 M: ppc %inc-d ( n -- ) ds-reg (%inc) ;
67 M: ppc %inc-r ( n -- ) rs-reg (%inc) ;
69 HOOK: reserved-area-size os ( -- n )
71 ! The start of the stack frame contains the size of this frame
72 ! as well as the currently executing XT
73 : factor-area-size ( -- n ) 2 cells ; foldable
74 : next-save ( n -- i ) cell - ;
75 : xt-save ( n -- i ) 2 cells - ;
77 ! Next, we have the spill area as well as the FFI parameter area.
78 ! They overlap, since basic blocks with FFI calls will never
80 : param@ ( n -- x ) reserved-area-size + ; inline
82 : param-save-size ( -- n ) 8 cells ; foldable
85 reserved-area-size param-save-size + + ; inline
87 : spill-integer-base ( -- n )
88 stack-frame get spill-counts>> double-float-regs swap at
89 double-float-regs reg-size * ;
91 : spill-integer@ ( n -- offset )
92 cells spill-integer-base + param@ ;
94 : spill-float@ ( n -- offset )
95 double-float-regs reg-size * param@ ;
97 ! Some FP intrinsics need a temporary scratch area in the stack
98 ! frame, 8 bytes in size
99 : scratch@ ( n -- offset )
100 stack-frame get total-size>>
105 ! Finally we have the linkage area
106 HOOK: lr-save os ( -- n )
108 M: ppc stack-frame-size ( stack-frame -- i )
109 [ spill-counts>> [ swap reg-size * ] { } assoc>map sum ]
118 M: ppc %call ( word -- ) 0 BL rc-relative-ppc-3 rel-word-pic ;
120 M: ppc %jump ( word -- )
121 0 6 LOAD32 8 rc-absolute-ppc-2/2 rel-here
122 0 B rc-relative-ppc-3 rel-word-pic-tail ;
124 M: ppc %jump-label ( label -- ) B ;
125 M: ppc %return ( -- ) BLR ;
127 M:: ppc %dispatch ( src temp -- )
129 4 cells rc-absolute-ppc-2/2 rel-here
134 :: (%slot) ( obj slot tag temp -- reg offset )
136 temp tag neg ; inline
138 : (%slot-imm) ( obj slot tag -- reg offset )
139 [ cells ] dip - ; inline
141 M: ppc %slot ( dst obj slot tag temp -- ) (%slot) LWZ ;
142 M: ppc %slot-imm ( dst obj slot tag -- ) (%slot-imm) LWZ ;
143 M: ppc %set-slot ( src obj slot tag temp -- ) (%slot) STW ;
144 M: ppc %set-slot-imm ( src obj slot tag -- ) (%slot-imm) STW ;
146 M:: ppc %string-nth ( dst src index temp -- )
150 dst temp string-offset LBZ
153 temp src string-aux-offset LWZ
156 temp temp byte-array-offset LHZ
162 M:: ppc %set-string-nth-fast ( ch obj index temp -- )
164 ch temp string-offset STB ;
167 M: ppc %add-imm ADDI ;
168 M: ppc %sub swap SUBF ;
169 M: ppc %sub-imm SUBI ;
171 M: ppc %mul-imm MULLI ;
173 M: ppc %and-imm ANDI ;
177 M: ppc %xor-imm XORI ;
178 M: ppc %shl-imm swapd SLWI ;
179 M: ppc %shr-imm swapd SRWI ;
180 M: ppc %sar-imm SRAWI ;
183 : %alien-invoke-tail ( func dll -- )
184 [ scratch-reg ] 2dip %alien-global scratch-reg MTCTR BCTR ;
186 :: exchange-regs ( r1 r2 -- )
191 : ?MR ( r1 r2 -- ) 2dup = [ 2drop ] [ MR ] if ;
193 :: move>args ( src1 src2 -- )
195 { [ src1 4 = ] [ 3 src2 ?MR 3 4 exchange-regs ] }
196 { [ src1 3 = ] [ 4 src2 ?MR ] }
197 { [ src2 3 = ] [ 4 src1 ?MR 3 4 exchange-regs ] }
198 { [ src2 4 = ] [ 3 src1 ?MR ] }
199 [ 3 src1 MR 4 src2 MR ]
206 :: overflow-template ( src1 src2 insn func -- )
207 "no-overflow" define-label
209 scratch-reg src2 src1 insn call
210 scratch-reg ds-reg 0 STW
211 "no-overflow" get BNO
213 %prepare-alien-invoke
215 "no-overflow" resolve-label ; inline
217 :: overflow-template-tail ( src1 src2 insn func -- )
218 "overflow" define-label
220 scratch-reg src2 src1 insn call
222 scratch-reg ds-reg 0 STW
224 "overflow" resolve-label
226 %prepare-alien-invoke
227 func f %alien-invoke-tail ; inline
229 M: ppc %fixnum-add ( src1 src2 -- )
230 [ ADDO. ] "overflow_fixnum_add" overflow-template ;
232 M: ppc %fixnum-add-tail ( src1 src2 -- )
233 [ ADDO. ] "overflow_fixnum_add" overflow-template-tail ;
235 M: ppc %fixnum-sub ( src1 src2 -- )
236 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template ;
238 M: ppc %fixnum-sub-tail ( src1 src2 -- )
239 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template-tail ;
241 M:: ppc %fixnum-mul ( src1 src2 temp1 temp2 -- )
242 "no-overflow" define-label
244 temp1 src1 tag-bits get SRAWI
245 temp2 temp1 src2 MULLWO.
247 "no-overflow" get BNO
248 src2 src2 tag-bits get SRAWI
250 %prepare-alien-invoke
251 "overflow_fixnum_multiply" f %alien-invoke
252 "no-overflow" resolve-label ;
254 M:: ppc %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
255 "overflow" define-label
257 temp1 src1 tag-bits get SRAWI
258 temp2 temp1 src2 MULLWO.
262 "overflow" resolve-label
263 src2 src2 tag-bits get SRAWI
265 %prepare-alien-invoke
266 "overflow_fixnum_multiply" f %alien-invoke-tail ;
268 : bignum@ ( n -- offset ) cells bignum tag-number - ; inline
270 M:: ppc %integer>bignum ( dst src temp -- )
273 dst 0 >bignum %load-reference
274 ! Is it zero? Then just go to the end and return this zero
278 dst 4 cells bignum temp %allot
281 temp dst 1 bignum@ STW
284 temp temp cell-bits 1- SRAWI
287 temp dst 2 bignum@ STW
288 ! Make negative value positive
294 temp dst 3 bignum@ STW
298 M:: ppc %bignum>integer ( dst src temp -- )
301 temp src 1 bignum@ LWZ
302 ! if the length is 1, its just the sign and nothing else,
305 0 temp 1 tag-fixnum CMPI
308 dst src 3 bignum@ LWZ
310 temp src 2 bignum@ LWZ
311 ! branchless arithmetic: we want to turn 0 into 1,
316 ! multiply value by sign
321 M: ppc %add-float FADD ;
322 M: ppc %sub-float FSUB ;
323 M: ppc %mul-float FMUL ;
324 M: ppc %div-float FDIV ;
326 M:: ppc %integer>float ( dst src -- )
327 HEX: 4330 scratch-reg LIS
328 scratch-reg 1 0 scratch@ STW
330 scratch-reg dup HEX: 8000 XORIS
331 scratch-reg 1 4 scratch@ STW
333 scratch-reg 4503601774854144.0 %load-reference
334 fp-scratch-reg scratch-reg float-offset LFD
335 dst dst fp-scratch-reg FSUB ;
337 M:: ppc %float>integer ( dst src -- )
338 fp-scratch-reg src FCTIWZ
339 fp-scratch-reg 1 0 scratch@ STFD
340 dst 1 4 scratch@ LWZ ;
342 M: ppc %copy ( dst src -- ) MR ;
344 M: ppc %copy-float ( dst src -- ) FMR ;
346 M: ppc %unbox-float ( dst src -- ) float-offset LFD ;
348 M:: ppc %box-float ( dst src temp -- )
349 dst 16 float temp %allot
350 src dst float-offset STFD ;
352 M:: ppc %unbox-any-c-ptr ( dst src temp -- )
354 { "is-byte-array" "end" "start" } [ define-label ] each
355 ! Address is computed in dst
357 ! Load object into scratch-reg
359 ! We come back here with displaced aliens
360 "start" resolve-label
362 0 scratch-reg \ f tag-number CMPI
365 ! Is the object an alien?
366 0 scratch-reg header-offset LWZ
367 0 0 alien type-number tag-fixnum CMPI
368 "is-byte-array" get BNE
369 ! If so, load the offset
370 0 scratch-reg alien-offset LWZ
371 ! Add it to address being computed
373 ! Now recurse on the underlying alien
374 scratch-reg scratch-reg underlying-alien-offset LWZ
376 "is-byte-array" resolve-label
377 ! Add byte array address to address being computed
378 dst dst scratch-reg ADD
379 ! Add an offset to start of byte array's data area
380 dst dst byte-array-offset ADDI
384 : alien@ ( n -- n' ) cells object tag-number - ;
386 M:: ppc %box-alien ( dst src temp -- )
389 dst \ f tag-number %load-immediate
392 dst 4 cells alien temp %allot
396 temp \ f tag-number %load-immediate
397 temp dst 1 alien@ STW
398 ! Store underlying-alien slot
399 temp dst 2 alien@ STW
403 M: ppc %alien-unsigned-1 0 LBZ ;
404 M: ppc %alien-unsigned-2 0 LHZ ;
406 M: ppc %alien-signed-1 dupd 0 LBZ dup EXTSB ;
407 M: ppc %alien-signed-2 0 LHA ;
409 M: ppc %alien-cell 0 LWZ ;
411 M: ppc %alien-float 0 LFS ;
412 M: ppc %alien-double 0 LFD ;
414 M: ppc %set-alien-integer-1 swap 0 STB ;
415 M: ppc %set-alien-integer-2 swap 0 STH ;
417 M: ppc %set-alien-cell swap 0 STW ;
419 M: ppc %set-alien-float swap 0 STFS ;
420 M: ppc %set-alien-double swap 0 STFD ;
422 : load-zone-ptr ( reg -- )
423 "nursery" f %alien-global ;
425 : load-allot-ptr ( nursery-ptr allot-ptr -- )
426 [ drop load-zone-ptr ] [ swap 4 LWZ ] 2bi ;
428 :: inc-allot-ptr ( nursery-ptr allot-ptr n -- )
429 scratch-reg allot-ptr n 8 align ADDI
430 scratch-reg nursery-ptr 4 STW ;
432 :: store-header ( dst class -- )
433 class type-number tag-fixnum scratch-reg LI
434 scratch-reg dst 0 STW ;
436 : store-tagged ( dst tag -- )
437 dupd tag-number ORI ;
439 M:: ppc %allot ( dst size class nursery-ptr -- )
440 nursery-ptr dst load-allot-ptr
441 nursery-ptr dst size inc-allot-ptr
442 dst class store-header
443 dst class store-tagged ;
445 : load-cards-offset ( dst -- )
446 [ "cards_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
448 : load-decks-offset ( dst -- )
449 [ "decks_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
451 M:: ppc %write-barrier ( src card# table -- )
452 card-mark scratch-reg LI
455 table load-cards-offset
456 src card# card-bits SRWI
457 table scratch-reg card# STBX
460 table load-decks-offset
461 src card# deck-bits SRWI
462 table scratch-reg card# STBX ;
467 11 12 cell LWZ ! nursery.here -> r11
468 12 12 3 cells LWZ ! nursery.end -> r12
469 11 11 1024 ADDI ! add ALLOT_BUFFER_ZONE to here
470 11 0 12 CMP ! is here >= end?
472 %prepare-alien-invoke
473 "minor_gc" f %alien-invoke
474 "end" resolve-label ;
476 M: ppc %prologue ( n -- )
477 0 11 LOAD32 rc-absolute-ppc-2/2 rel-this
480 [ [ 1 1 ] dip neg ADDI ]
481 [ [ 11 1 ] dip xt-save STW ]
483 [ [ 11 1 ] dip next-save STW ]
484 [ [ 0 1 ] dip lr-save + STW ]
487 M: ppc %epilogue ( n -- )
488 #! At the end of each word that calls a subroutine, we store
489 #! the previous link register value in r0 by popping it off
490 #! the stack, set the link register to the contents of r0,
491 #! and jump to the link register.
492 [ [ 0 1 ] dip lr-save + LWZ ]
493 [ [ 1 1 ] dip ADDI ] bi
496 :: (%boolean) ( dst temp word -- )
498 dst \ f tag-number %load-immediate
499 "end" get word execute
500 dst \ t %load-reference
501 "end" get resolve-label ; inline
503 : %boolean ( dst temp cc -- )
505 { cc< [ \ BLT (%boolean) ] }
506 { cc<= [ \ BLE (%boolean) ] }
507 { cc> [ \ BGT (%boolean) ] }
508 { cc>= [ \ BGE (%boolean) ] }
509 { cc= [ \ BEQ (%boolean) ] }
510 { cc/= [ \ BNE (%boolean) ] }
513 : (%compare) ( src1 src2 -- ) [ 0 ] dip CMP ; inline
514 : (%compare-imm) ( src1 src2 -- ) [ 0 ] 2dip CMPI ; inline
515 : (%compare-float) ( src1 src2 -- ) [ 0 ] dip FCMPU ; inline
517 M: ppc %compare (%compare) %boolean ;
518 M: ppc %compare-imm (%compare-imm) %boolean ;
519 M: ppc %compare-float (%compare-float) %boolean ;
521 : %branch ( label cc -- )
531 M: ppc %compare-branch (%compare) %branch ;
532 M: ppc %compare-imm-branch (%compare-imm) %branch ;
533 M: ppc %compare-float-branch (%compare-float) %branch ;
535 M: ppc %spill-integer ( src n -- ) spill-integer@ 1 swap STW ;
536 M: ppc %reload-integer ( dst n -- ) spill-integer@ 1 swap LWZ ;
538 M: ppc %spill-float ( src n -- ) spill-float@ 1 swap STFD ;
539 M: ppc %reload-float ( dst n -- ) spill-float@ 1 swap LFD ;
543 M: int-regs return-reg drop 3 ;
544 M: int-regs param-regs drop { 3 4 5 6 7 8 9 10 } ;
545 M: float-regs return-reg drop 1 ;
547 M: int-regs %save-param-reg drop 1 rot local@ STW ;
548 M: int-regs %load-param-reg drop 1 rot local@ LWZ ;
550 GENERIC: STF ( src dst off reg-class -- )
552 M: single-float-regs STF drop STFS ;
553 M: double-float-regs STF drop STFD ;
555 M: float-regs %save-param-reg [ 1 rot local@ ] dip STF ;
557 GENERIC: LF ( dst src off reg-class -- )
559 M: single-float-regs LF drop LFS ;
560 M: double-float-regs LF drop LFD ;
562 M: float-regs %load-param-reg [ 1 rot local@ ] dip LF ;
564 M: stack-params %load-param-reg ( stack reg reg-class -- )
565 drop [ 0 1 rot local@ LWZ 0 1 ] dip param@ STW ;
567 : next-param@ ( n -- x ) param@ stack-frame get total-size>> + ;
569 M: stack-params %save-param-reg ( stack reg reg-class -- )
570 #! Funky. Read the parameter from the caller's stack frame.
571 #! This word is used in callbacks
573 [ 0 1 ] dip next-param@ LWZ
574 [ 0 1 ] dip local@ STW ;
576 M: ppc %prepare-unbox ( -- )
577 ! First parameter is top of stack
579 ds-reg dup cell SUBI ;
581 M: ppc %unbox ( n reg-class func -- )
582 ! Value must be in r3
585 ! Store the return value on the C stack
586 over [ [ return-reg ] keep %save-param-reg ] [ 2drop ] if ;
588 M: ppc %unbox-long-long ( n func -- )
589 ! Value must be in r3:r4
592 ! Store the return value on the C stack
594 [ [ 3 1 ] dip local@ STW ]
595 [ [ 4 1 ] dip cell + local@ STW ] bi
598 M: ppc %unbox-large-struct ( n c-type -- )
599 ! Value must be in r3
600 ! Compute destination address and load struct size
601 [ [ 4 1 ] dip local@ ADDI ] [ heap-size 5 LI ] bi*
603 "to_value_struct" f %alien-invoke ;
605 M: ppc %box ( n reg-class func -- )
606 ! If the source is a stack location, load it into freg #0.
607 ! If the source is f, then we assume the value is already in
609 [ over [ 0 over param-reg swap %load-param-reg ] [ 2drop ] if ] dip
612 M: ppc %box-long-long ( n func -- )
615 [ [ 3 1 ] dip local@ LWZ ]
616 [ [ 4 1 ] dip cell + local@ LWZ ] bi
618 ] dip f %alien-invoke ;
620 : struct-return@ ( n -- n )
621 [ stack-frame get params>> ] unless* local@ ;
623 M: ppc %prepare-box-struct ( -- )
624 #! Compute target address for value struct return
625 3 1 f struct-return@ ADDI
628 M: ppc %box-large-struct ( n c-type -- )
629 ! If n = f, then we're boxing a returned struct
630 ! Compute destination address and load struct size
631 [ [ 3 1 ] dip struct-return@ ADDI ] [ heap-size 4 LI ] bi*
633 "box_value_struct" f %alien-invoke ;
635 M: ppc %prepare-alien-invoke
636 #! Save Factor stack pointers in case the C code calls a
637 #! callback which does a GC, which must reliably trace
639 scratch-reg "stack_chain" f %alien-global
640 scratch-reg scratch-reg 0 LWZ
642 ds-reg scratch-reg 8 STW
643 rs-reg scratch-reg 12 STW ;
645 M: ppc %alien-invoke ( symbol dll -- )
646 [ 11 ] 2dip %alien-global 11 MTLR BLRL ;
648 M: ppc %alien-callback ( quot -- )
649 3 swap %load-reference "c_to_factor" f %alien-invoke ;
651 M: ppc %prepare-alien-indirect ( -- )
652 "unbox_alien" f %alien-invoke
655 M: ppc %alien-indirect ( -- )
658 M: ppc %callback-value ( ctype -- )
659 ! Save top of data stack
662 ! Restore data/call/retain stacks
663 "unnest_stacks" f %alien-invoke
664 ! Restore top of data stack
666 ! Unbox former top of data stack to return registers
669 M: ppc small-enough? ( n -- ? ) -32768 32767 between? ;
671 M: ppc return-struct-in-registers? ( c-type -- ? )
672 c-type return-in-registers?>> ;
674 M: ppc %box-small-struct ( c-type -- )
675 #! Box a <= 16-byte struct returned in r3:r4:r5:r6
677 "box_medium_struct" f %alien-invoke ;
679 : %unbox-struct-1 ( -- )
680 ! Alien must be in r3.
681 "alien_offset" f %alien-invoke
684 : %unbox-struct-2 ( -- )
685 ! Alien must be in r3.
686 "alien_offset" f %alien-invoke
690 : %unbox-struct-4 ( -- )
691 ! Alien must be in r3.
692 "alien_offset" f %alien-invoke
698 M: ppc %unbox-small-struct ( size -- )
699 #! Alien must be in EAX.
700 heap-size cell align cell /i {
701 { 1 [ %unbox-struct-1 ] }
702 { 2 [ %unbox-struct-2 ] }
703 { 4 [ %unbox-struct-4 ] }
709 { [ os macosx? ] [ "cpu.ppc.macosx" require ] }
710 { [ os linux? ] [ "cpu.ppc.linux" require ] }
713 "complex-double" c-type t >>return-in-registers? drop
717 [ alien-unsigned-4 c-bool> ] >>getter
718 [ [ >c-bool ] 2dip set-alien-unsigned-4 ] >>setter
721 "box_boolean" >>boxer
722 "to_boolean" >>unboxer
723 "bool" define-primitive-type
724 ] with-compilation-unit