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 ;
117 M: ppc %jump ( word -- ) 0 B rc-relative-ppc-3 rel-word ;
118 M: ppc %jump-label ( label -- ) B ;
119 M: ppc %return ( -- ) BLR ;
121 M:: ppc %dispatch ( src temp offset -- )
123 4 offset + cells rc-absolute-ppc-2/2 rel-here
128 M: ppc %dispatch-label ( word -- )
129 0 , rc-absolute-cell rel-word ;
131 :: (%slot) ( obj slot tag temp -- reg offset )
133 temp tag neg ; inline
135 : (%slot-imm) ( obj slot tag -- reg offset )
136 [ cells ] dip - ; inline
138 M: ppc %slot ( dst obj slot tag temp -- ) (%slot) LWZ ;
139 M: ppc %slot-imm ( dst obj slot tag -- ) (%slot-imm) LWZ ;
140 M: ppc %set-slot ( src obj slot tag temp -- ) (%slot) STW ;
141 M: ppc %set-slot-imm ( src obj slot tag -- ) (%slot-imm) STW ;
143 M:: ppc %string-nth ( dst src index temp -- )
147 dst temp string-offset LBZ
150 temp src string-aux-offset LWZ
153 temp temp byte-array-offset LHZ
159 M:: ppc %set-string-nth-fast ( ch obj index temp -- )
161 ch temp string-offset STB ;
164 M: ppc %add-imm ADDI ;
165 M: ppc %sub swap SUBF ;
166 M: ppc %sub-imm SUBI ;
168 M: ppc %mul-imm MULLI ;
170 M: ppc %and-imm ANDI ;
174 M: ppc %xor-imm XORI ;
175 M: ppc %shl-imm swapd SLWI ;
176 M: ppc %shr-imm swapd SRWI ;
177 M: ppc %sar-imm SRAWI ;
180 : %alien-invoke-tail ( func dll -- )
181 [ scratch-reg ] 2dip %alien-global scratch-reg MTCTR BCTR ;
183 :: exchange-regs ( r1 r2 -- )
188 : ?MR ( r1 r2 -- ) 2dup = [ 2drop ] [ MR ] if ;
190 :: move>args ( src1 src2 -- )
192 { [ src1 4 = ] [ 3 src2 ?MR 3 4 exchange-regs ] }
193 { [ src1 3 = ] [ 4 src2 ?MR ] }
194 { [ src2 3 = ] [ 4 src1 ?MR 3 4 exchange-regs ] }
195 { [ src2 4 = ] [ 3 src1 ?MR ] }
196 [ 3 src1 MR 4 src2 MR ]
203 :: overflow-template ( src1 src2 insn func -- )
204 "no-overflow" define-label
206 scratch-reg src2 src1 insn call
207 scratch-reg ds-reg 0 STW
208 "no-overflow" get BNO
210 %prepare-alien-invoke
212 "no-overflow" resolve-label ; inline
214 :: overflow-template-tail ( src1 src2 insn func -- )
215 "overflow" define-label
217 scratch-reg src2 src1 insn call
219 scratch-reg ds-reg 0 STW
221 "overflow" resolve-label
223 %prepare-alien-invoke
224 func f %alien-invoke-tail ; inline
226 M: ppc %fixnum-add ( src1 src2 -- )
227 [ ADDO. ] "overflow_fixnum_add" overflow-template ;
229 M: ppc %fixnum-add-tail ( src1 src2 -- )
230 [ ADDO. ] "overflow_fixnum_add" overflow-template-tail ;
232 M: ppc %fixnum-sub ( src1 src2 -- )
233 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template ;
235 M: ppc %fixnum-sub-tail ( src1 src2 -- )
236 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template-tail ;
238 M:: ppc %fixnum-mul ( src1 src2 temp1 temp2 -- )
239 "no-overflow" define-label
241 temp1 src1 tag-bits get SRAWI
242 temp2 temp1 src2 MULLWO.
244 "no-overflow" get BNO
245 src2 src2 tag-bits get SRAWI
247 %prepare-alien-invoke
248 "overflow_fixnum_multiply" f %alien-invoke
249 "no-overflow" resolve-label ;
251 M:: ppc %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
252 "overflow" define-label
254 temp1 src1 tag-bits get SRAWI
255 temp2 temp1 src2 MULLWO.
259 "overflow" resolve-label
260 src2 src2 tag-bits get SRAWI
262 %prepare-alien-invoke
263 "overflow_fixnum_multiply" f %alien-invoke-tail ;
265 : bignum@ ( n -- offset ) cells bignum tag-number - ; inline
267 M:: ppc %integer>bignum ( dst src temp -- )
270 dst 0 >bignum %load-reference
271 ! Is it zero? Then just go to the end and return this zero
275 dst 4 cells bignum temp %allot
278 temp dst 1 bignum@ STW
281 temp temp cell-bits 1- SRAWI
284 temp dst 2 bignum@ STW
285 ! Make negative value positive
291 temp dst 3 bignum@ STW
295 M:: ppc %bignum>integer ( dst src temp -- )
298 temp src 1 bignum@ LWZ
299 ! if the length is 1, its just the sign and nothing else,
302 0 temp 1 tag-fixnum CMPI
305 dst src 3 bignum@ LWZ
307 temp src 2 bignum@ LWZ
308 ! branchless arithmetic: we want to turn 0 into 1,
313 ! multiply value by sign
318 M: ppc %add-float FADD ;
319 M: ppc %sub-float FSUB ;
320 M: ppc %mul-float FMUL ;
321 M: ppc %div-float FDIV ;
323 M:: ppc %integer>float ( dst src -- )
324 HEX: 4330 scratch-reg LIS
325 scratch-reg 1 0 scratch@ STW
327 scratch-reg dup HEX: 8000 XORIS
328 scratch-reg 1 4 scratch@ STW
330 scratch-reg 4503601774854144.0 %load-reference
331 fp-scratch-reg scratch-reg float-offset LFD
332 dst dst fp-scratch-reg FSUB ;
334 M:: ppc %float>integer ( dst src -- )
335 fp-scratch-reg src FCTIWZ
336 fp-scratch-reg 1 0 scratch@ STFD
337 dst 1 4 scratch@ LWZ ;
339 M: ppc %copy ( dst src -- ) MR ;
341 M: ppc %copy-float ( dst src -- ) FMR ;
343 M: ppc %unbox-float ( dst src -- ) float-offset LFD ;
345 M:: ppc %box-float ( dst src temp -- )
346 dst 16 float temp %allot
347 src dst float-offset STFD ;
349 M:: ppc %unbox-any-c-ptr ( dst src temp -- )
351 { "is-byte-array" "end" "start" } [ define-label ] each
352 ! Address is computed in dst
354 ! Load object into scratch-reg
356 ! We come back here with displaced aliens
357 "start" resolve-label
359 0 scratch-reg \ f tag-number CMPI
362 ! Is the object an alien?
363 0 scratch-reg header-offset LWZ
364 0 0 alien type-number tag-fixnum CMPI
365 "is-byte-array" get BNE
366 ! If so, load the offset
367 0 scratch-reg alien-offset LWZ
368 ! Add it to address being computed
370 ! Now recurse on the underlying alien
371 scratch-reg scratch-reg underlying-alien-offset LWZ
373 "is-byte-array" resolve-label
374 ! Add byte array address to address being computed
375 dst dst scratch-reg ADD
376 ! Add an offset to start of byte array's data area
377 dst dst byte-array-offset ADDI
381 : alien@ ( n -- n' ) cells object tag-number - ;
383 M:: ppc %box-alien ( dst src temp -- )
386 dst \ f tag-number %load-immediate
389 dst 4 cells alien temp %allot
393 temp \ f tag-number %load-immediate
394 temp dst 1 alien@ STW
395 ! Store underlying-alien slot
396 temp dst 2 alien@ STW
400 M: ppc %alien-unsigned-1 0 LBZ ;
401 M: ppc %alien-unsigned-2 0 LHZ ;
403 M: ppc %alien-signed-1 dupd 0 LBZ dup EXTSB ;
404 M: ppc %alien-signed-2 0 LHA ;
406 M: ppc %alien-cell 0 LWZ ;
408 M: ppc %alien-float 0 LFS ;
409 M: ppc %alien-double 0 LFD ;
411 M: ppc %set-alien-integer-1 swap 0 STB ;
412 M: ppc %set-alien-integer-2 swap 0 STH ;
414 M: ppc %set-alien-cell swap 0 STW ;
416 M: ppc %set-alien-float swap 0 STFS ;
417 M: ppc %set-alien-double swap 0 STFD ;
419 : load-zone-ptr ( reg -- )
420 "nursery" f %alien-global ;
422 : load-allot-ptr ( nursery-ptr allot-ptr -- )
423 [ drop load-zone-ptr ] [ swap 4 LWZ ] 2bi ;
425 :: inc-allot-ptr ( nursery-ptr allot-ptr n -- )
426 scratch-reg allot-ptr n 8 align ADDI
427 scratch-reg nursery-ptr 4 STW ;
429 :: store-header ( dst class -- )
430 class type-number tag-fixnum scratch-reg LI
431 scratch-reg dst 0 STW ;
433 : store-tagged ( dst tag -- )
434 dupd tag-number ORI ;
436 M:: ppc %allot ( dst size class nursery-ptr -- )
437 nursery-ptr dst load-allot-ptr
438 nursery-ptr dst size inc-allot-ptr
439 dst class store-header
440 dst class store-tagged ;
442 : load-cards-offset ( dst -- )
443 [ "cards_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
445 : load-decks-offset ( dst -- )
446 [ "decks_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
448 M:: ppc %write-barrier ( src card# table -- )
449 card-mark scratch-reg LI
452 table load-cards-offset
453 src card# card-bits SRWI
454 table scratch-reg card# STBX
457 table load-decks-offset
458 src card# deck-bits SRWI
459 table scratch-reg card# STBX ;
464 11 12 cell LWZ ! nursery.here -> r11
465 12 12 3 cells LWZ ! nursery.end -> r12
466 11 11 1024 ADDI ! add ALLOT_BUFFER_ZONE to here
467 11 0 12 CMP ! is here >= end?
469 %prepare-alien-invoke
470 "minor_gc" f %alien-invoke
471 "end" resolve-label ;
473 M: ppc %prologue ( n -- )
474 0 11 LOAD32 rc-absolute-ppc-2/2 rel-this
477 [ [ 1 1 ] dip neg ADDI ]
478 [ [ 11 1 ] dip xt-save STW ]
480 [ [ 11 1 ] dip next-save STW ]
481 [ [ 0 1 ] dip lr-save + STW ]
484 M: ppc %epilogue ( n -- )
485 #! At the end of each word that calls a subroutine, we store
486 #! the previous link register value in r0 by popping it off
487 #! the stack, set the link register to the contents of r0,
488 #! and jump to the link register.
489 [ [ 0 1 ] dip lr-save + LWZ ]
490 [ [ 1 1 ] dip ADDI ] bi
493 :: (%boolean) ( dst temp word -- )
495 dst \ f tag-number %load-immediate
496 "end" get word execute
497 dst \ t %load-reference
498 "end" get resolve-label ; inline
500 : %boolean ( dst temp cc -- )
502 { cc< [ \ BLT (%boolean) ] }
503 { cc<= [ \ BLE (%boolean) ] }
504 { cc> [ \ BGT (%boolean) ] }
505 { cc>= [ \ BGE (%boolean) ] }
506 { cc= [ \ BEQ (%boolean) ] }
507 { cc/= [ \ BNE (%boolean) ] }
510 : (%compare) ( src1 src2 -- ) [ 0 ] dip CMP ; inline
511 : (%compare-imm) ( src1 src2 -- ) [ 0 ] 2dip CMPI ; inline
512 : (%compare-float) ( src1 src2 -- ) [ 0 ] dip FCMPU ; inline
514 M: ppc %compare (%compare) %boolean ;
515 M: ppc %compare-imm (%compare-imm) %boolean ;
516 M: ppc %compare-float (%compare-float) %boolean ;
518 : %branch ( label cc -- )
528 M: ppc %compare-branch (%compare) %branch ;
529 M: ppc %compare-imm-branch (%compare-imm) %branch ;
530 M: ppc %compare-float-branch (%compare-float) %branch ;
532 M: ppc %spill-integer ( src n -- ) spill-integer@ 1 swap STW ;
533 M: ppc %reload-integer ( dst n -- ) spill-integer@ 1 swap LWZ ;
535 M: ppc %spill-float ( src n -- ) spill-float@ 1 swap STFD ;
536 M: ppc %reload-float ( dst n -- ) spill-float@ 1 swap LFD ;
540 M: int-regs return-reg drop 3 ;
541 M: int-regs param-regs drop { 3 4 5 6 7 8 9 10 } ;
542 M: float-regs return-reg drop 1 ;
544 M: int-regs %save-param-reg drop 1 rot local@ STW ;
545 M: int-regs %load-param-reg drop 1 rot local@ LWZ ;
547 GENERIC: STF ( src dst off reg-class -- )
549 M: single-float-regs STF drop STFS ;
550 M: double-float-regs STF drop STFD ;
552 M: float-regs %save-param-reg [ 1 rot local@ ] dip STF ;
554 GENERIC: LF ( dst src off reg-class -- )
556 M: single-float-regs LF drop LFS ;
557 M: double-float-regs LF drop LFD ;
559 M: float-regs %load-param-reg [ 1 rot local@ ] dip LF ;
561 M: stack-params %load-param-reg ( stack reg reg-class -- )
562 drop [ 0 1 rot local@ LWZ 0 1 ] dip param@ STW ;
564 : next-param@ ( n -- x ) param@ stack-frame get total-size>> + ;
566 M: stack-params %save-param-reg ( stack reg reg-class -- )
567 #! Funky. Read the parameter from the caller's stack frame.
568 #! This word is used in callbacks
570 [ 0 1 ] dip next-param@ LWZ
571 [ 0 1 ] dip local@ STW ;
573 M: ppc %prepare-unbox ( -- )
574 ! First parameter is top of stack
576 ds-reg dup cell SUBI ;
578 M: ppc %unbox ( n reg-class func -- )
579 ! Value must be in r3
582 ! Store the return value on the C stack
583 over [ [ return-reg ] keep %save-param-reg ] [ 2drop ] if ;
585 M: ppc %unbox-long-long ( n func -- )
586 ! Value must be in r3:r4
589 ! Store the return value on the C stack
591 [ [ 3 1 ] dip local@ STW ]
592 [ [ 4 1 ] dip cell + local@ STW ] bi
595 M: ppc %unbox-large-struct ( n c-type -- )
596 ! Value must be in r3
597 ! Compute destination address and load struct size
598 [ [ 4 1 ] dip local@ ADDI ] [ heap-size 5 LI ] bi*
600 "to_value_struct" f %alien-invoke ;
602 M: ppc %box ( n reg-class func -- )
603 ! If the source is a stack location, load it into freg #0.
604 ! If the source is f, then we assume the value is already in
606 [ over [ 0 over param-reg swap %load-param-reg ] [ 2drop ] if ] dip
609 M: ppc %box-long-long ( n func -- )
612 [ [ 3 1 ] dip local@ LWZ ]
613 [ [ 4 1 ] dip cell + local@ LWZ ] bi
615 ] dip f %alien-invoke ;
617 : struct-return@ ( n -- n )
618 [ stack-frame get params>> ] unless* local@ ;
620 M: ppc %prepare-box-struct ( -- )
621 #! Compute target address for value struct return
622 3 1 f struct-return@ ADDI
625 M: ppc %box-large-struct ( n c-type -- )
626 ! If n = f, then we're boxing a returned struct
627 ! Compute destination address and load struct size
628 [ [ 3 1 ] dip struct-return@ ADDI ] [ heap-size 4 LI ] bi*
630 "box_value_struct" f %alien-invoke ;
632 M: ppc %prepare-alien-invoke
633 #! Save Factor stack pointers in case the C code calls a
634 #! callback which does a GC, which must reliably trace
636 scratch-reg "stack_chain" f %alien-global
637 scratch-reg scratch-reg 0 LWZ
639 ds-reg scratch-reg 8 STW
640 rs-reg scratch-reg 12 STW ;
642 M: ppc %alien-invoke ( symbol dll -- )
643 [ 11 ] 2dip %alien-global 11 MTLR BLRL ;
645 M: ppc %alien-callback ( quot -- )
646 3 swap %load-reference "c_to_factor" f %alien-invoke ;
648 M: ppc %prepare-alien-indirect ( -- )
649 "unbox_alien" f %alien-invoke
652 M: ppc %alien-indirect ( -- )
655 M: ppc %callback-value ( ctype -- )
656 ! Save top of data stack
659 ! Restore data/call/retain stacks
660 "unnest_stacks" f %alien-invoke
661 ! Restore top of data stack
663 ! Unbox former top of data stack to return registers
666 M: ppc small-enough? ( n -- ? ) -32768 32767 between? ;
668 M: ppc return-struct-in-registers? ( c-type -- ? )
669 c-type return-in-registers?>> ;
671 M: ppc %box-small-struct ( c-type -- )
672 #! Box a <= 16-byte struct returned in r3:r4:r5:r6
674 "box_medium_struct" f %alien-invoke ;
676 : %unbox-struct-1 ( -- )
677 ! Alien must be in r3.
678 "alien_offset" f %alien-invoke
681 : %unbox-struct-2 ( -- )
682 ! Alien must be in r3.
683 "alien_offset" f %alien-invoke
687 : %unbox-struct-4 ( -- )
688 ! Alien must be in r3.
689 "alien_offset" f %alien-invoke
695 M: ppc %unbox-small-struct ( size -- )
696 #! Alien must be in EAX.
697 heap-size cell align cell /i {
698 { 1 [ %unbox-struct-1 ] }
699 { 2 [ %unbox-struct-2 ] }
700 { 4 [ %unbox-struct-4 ] }
706 { [ os macosx? ] [ "cpu.ppc.macosx" require ] }
707 { [ os linux? ] [ "cpu.ppc.linux" require ] }
710 "complex-double" c-type t >>return-in-registers? drop