1 ! Copyright (C) 2005, 2008 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 cpu.architecture cpu.ppc.assembler
6 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-r27: integer vregs
13 ! r28: integer scratch
17 ! f30, f31: float scratch
19 enable-float-intrinsics
21 << \ ##integer>float t frame-required? set-word-prop
22 \ ##float>integer t frame-required? set-word-prop >>
24 M: ppc machine-registers
26 { int-regs T{ range f 2 26 1 } }
27 { double-float-regs T{ range f 0 29 1 } }
30 CONSTANT: scratch-reg 28
31 CONSTANT: fp-scratch-reg 30
33 M: ppc two-operand? f ;
35 M: ppc %load-immediate ( reg n -- ) swap LOAD ;
37 M: ppc %load-reference ( reg obj -- )
38 [ 0 swap LOAD32 ] [ rc-absolute-ppc-2/2 rel-immediate ] bi* ;
40 M: ppc %alien-global ( register symbol dll -- )
41 [ 0 swap LOAD32 ] 2dip rc-absolute-ppc-2/2 rel-dlsym ;
46 GENERIC: loc-reg ( loc -- reg )
48 M: ds-loc loc-reg drop ds-reg ;
49 M: rs-loc loc-reg drop rs-reg ;
51 : loc>operand ( loc -- reg n )
52 [ loc-reg ] [ n>> cells neg ] bi ; inline
54 M: ppc %peek loc>operand LWZ ;
55 M: ppc %replace loc>operand STW ;
57 : (%inc) ( n reg -- ) dup rot cells ADDI ; inline
59 M: ppc %inc-d ( n -- ) ds-reg (%inc) ;
60 M: ppc %inc-r ( n -- ) rs-reg (%inc) ;
62 HOOK: reserved-area-size os ( -- n )
64 ! The start of the stack frame contains the size of this frame
65 ! as well as the currently executing XT
66 : factor-area-size ( -- n ) 2 cells ; foldable
67 : next-save ( n -- i ) cell - ;
68 : xt-save ( n -- i ) 2 cells - ;
70 ! Next, we have the spill area as well as the FFI parameter area.
71 ! They overlap, since basic blocks with FFI calls will never
73 : param@ ( n -- x ) reserved-area-size + ; inline
75 : param-save-size ( -- n ) 8 cells ; foldable
78 reserved-area-size param-save-size + + ; inline
80 : spill-integer-base ( -- n )
81 stack-frame get spill-counts>> double-float-regs swap at
82 double-float-regs reg-size * ;
84 : spill-integer@ ( n -- offset )
85 cells spill-integer-base + param@ ;
87 : spill-float@ ( n -- offset )
88 double-float-regs reg-size * param@ ;
90 ! Some FP intrinsics need a temporary scratch area in the stack
91 ! frame, 8 bytes in size
92 : scratch@ ( n -- offset )
93 stack-frame get total-size>>
98 ! Finally we have the linkage area
99 HOOK: lr-save os ( -- n )
101 M: ppc stack-frame-size ( stack-frame -- i )
102 [ spill-counts>> [ swap reg-size * ] { } assoc>map sum ]
111 M: ppc %call ( label -- ) BL ;
112 M: ppc %jump-label ( label -- ) B ;
113 M: ppc %return ( -- ) BLR ;
115 M:: ppc %dispatch ( src temp offset -- )
117 4 offset + cells rc-absolute-ppc-2/2 rel-here
122 M: ppc %dispatch-label ( word -- )
123 0 , rc-absolute-cell rel-word ;
125 :: (%slot) ( obj slot tag temp -- reg offset )
127 temp tag neg ; inline
129 : (%slot-imm) ( obj slot tag -- reg offset )
130 [ cells ] dip - ; inline
132 M: ppc %slot ( dst obj slot tag temp -- ) (%slot) LWZ ;
133 M: ppc %slot-imm ( dst obj slot tag -- ) (%slot-imm) LWZ ;
134 M: ppc %set-slot ( src obj slot tag temp -- ) (%slot) STW ;
135 M: ppc %set-slot-imm ( src obj slot tag -- ) (%slot-imm) STW ;
137 M:: ppc %string-nth ( dst src index temp -- )
141 dst temp string-offset LBZ
144 temp src string-aux-offset LWZ
147 temp temp byte-array-offset LHZ
153 M:: ppc %set-string-nth-fast ( ch obj index temp -- )
155 ch temp string-offset STB ;
158 M: ppc %add-imm ADDI ;
159 M: ppc %sub swap SUBF ;
160 M: ppc %sub-imm SUBI ;
162 M: ppc %mul-imm MULLI ;
164 M: ppc %and-imm ANDI ;
168 M: ppc %xor-imm XORI ;
169 M: ppc %shl-imm swapd SLWI ;
170 M: ppc %shr-imm swapd SRWI ;
171 M: ppc %sar-imm SRAWI ;
174 : %alien-invoke-tail ( func dll -- )
175 [ scratch-reg ] 2dip %alien-global scratch-reg MTCTR BCTR ;
177 :: exchange-regs ( r1 r2 -- )
182 : ?MR ( r1 r2 -- ) 2dup = [ 2drop ] [ MR ] if ;
184 :: move>args ( src1 src2 -- )
186 { [ src1 4 = ] [ 3 src2 ?MR 3 4 exchange-regs ] }
187 { [ src1 3 = ] [ 4 src2 ?MR ] }
188 { [ src2 3 = ] [ 4 src1 ?MR 3 4 exchange-regs ] }
189 { [ src2 4 = ] [ 3 src1 ?MR ] }
190 [ 3 src1 MR 4 src2 MR ]
197 :: overflow-template ( src1 src2 insn func -- )
198 "no-overflow" define-label
200 scratch-reg src2 src1 insn call
201 scratch-reg ds-reg 0 STW
202 "no-overflow" get BNO
204 %prepare-alien-invoke
206 "no-overflow" resolve-label ; inline
208 :: overflow-template-tail ( src1 src2 insn func -- )
209 "overflow" define-label
211 scratch-reg src2 src1 insn call
213 scratch-reg ds-reg 0 STW
215 "overflow" resolve-label
217 %prepare-alien-invoke
218 func f %alien-invoke-tail ; inline
220 M: ppc %fixnum-add ( src1 src2 -- )
221 [ ADDO. ] "overflow_fixnum_add" overflow-template ;
223 M: ppc %fixnum-add-tail ( src1 src2 -- )
224 [ ADDO. ] "overflow_fixnum_add" overflow-template-tail ;
226 M: ppc %fixnum-sub ( src1 src2 -- )
227 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template ;
229 M: ppc %fixnum-sub-tail ( src1 src2 -- )
230 [ SUBFO. ] "overflow_fixnum_subtract" overflow-template-tail ;
232 M:: ppc %fixnum-mul ( src1 src2 temp1 temp2 -- )
233 "no-overflow" define-label
235 temp1 src1 tag-bits get SRAWI
236 temp2 temp1 src2 MULLWO.
238 "no-overflow" get BNO
239 src2 src2 tag-bits get SRAWI
241 %prepare-alien-invoke
242 "overflow_fixnum_multiply" f %alien-invoke
243 "no-overflow" resolve-label ;
245 M:: ppc %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
246 "overflow" define-label
248 temp1 src1 tag-bits get SRAWI
249 temp2 temp1 src2 MULLWO.
253 "overflow" resolve-label
254 src2 src2 tag-bits get SRAWI
256 %prepare-alien-invoke
257 "overflow_fixnum_multiply" f %alien-invoke-tail ;
259 : bignum@ ( n -- offset ) cells bignum tag-number - ; inline
261 M:: ppc %integer>bignum ( dst src temp -- )
264 dst 0 >bignum %load-reference
265 ! Is it zero? Then just go to the end and return this zero
269 dst 4 cells bignum temp %allot
272 temp dst 1 bignum@ STW
275 temp temp cell-bits 1- SRAWI
278 temp dst 2 bignum@ STW
279 ! Make negative value positive
285 temp dst 3 bignum@ STW
289 M:: ppc %bignum>integer ( dst src temp -- )
292 temp src 1 bignum@ LWZ
293 ! if the length is 1, its just the sign and nothing else,
296 0 temp 1 tag-fixnum CMPI
299 dst src 3 bignum@ LWZ
301 temp src 2 bignum@ LWZ
302 ! branchless arithmetic: we want to turn 0 into 1,
307 ! multiply value by sign
312 M: ppc %add-float FADD ;
313 M: ppc %sub-float FSUB ;
314 M: ppc %mul-float FMUL ;
315 M: ppc %div-float FDIV ;
317 M:: ppc %integer>float ( dst src -- )
318 HEX: 4330 scratch-reg LIS
319 scratch-reg 1 0 scratch@ STW
321 scratch-reg dup HEX: 8000 XORIS
322 scratch-reg 1 4 scratch@ STW
324 scratch-reg 4503601774854144.0 %load-reference
325 fp-scratch-reg scratch-reg float-offset LFD
326 dst dst fp-scratch-reg FSUB ;
328 M:: ppc %float>integer ( dst src -- )
329 fp-scratch-reg src FCTIWZ
330 fp-scratch-reg 1 0 scratch@ STFD
331 dst 1 4 scratch@ LWZ ;
333 M: ppc %copy ( dst src -- ) MR ;
335 M: ppc %copy-float ( dst src -- ) FMR ;
337 M: ppc %unbox-float ( dst src -- ) float-offset LFD ;
339 M:: ppc %box-float ( dst src temp -- )
340 dst 16 float temp %allot
341 src dst float-offset STFD ;
343 M:: ppc %unbox-any-c-ptr ( dst src temp -- )
345 { "is-byte-array" "end" "start" } [ define-label ] each
346 ! Address is computed in dst
348 ! Load object into scratch-reg
350 ! We come back here with displaced aliens
351 "start" resolve-label
353 0 scratch-reg \ f tag-number CMPI
356 ! Is the object an alien?
357 0 scratch-reg header-offset LWZ
358 0 0 alien type-number tag-fixnum CMPI
359 "is-byte-array" get BNE
360 ! If so, load the offset
361 0 scratch-reg alien-offset LWZ
362 ! Add it to address being computed
364 ! Now recurse on the underlying alien
365 scratch-reg scratch-reg underlying-alien-offset LWZ
367 "is-byte-array" resolve-label
368 ! Add byte array address to address being computed
369 dst dst scratch-reg ADD
370 ! Add an offset to start of byte array's data area
371 dst dst byte-array-offset ADDI
375 : alien@ ( n -- n' ) cells object tag-number - ;
377 M:: ppc %box-alien ( dst src temp -- )
380 dst \ f tag-number %load-immediate
383 dst 4 cells alien temp %allot
387 temp \ f tag-number %load-immediate
388 temp dst 1 alien@ STW
389 ! Store underlying-alien slot
390 temp dst 2 alien@ STW
394 M: ppc %alien-unsigned-1 0 LBZ ;
395 M: ppc %alien-unsigned-2 0 LHZ ;
397 M: ppc %alien-signed-1 dupd 0 LBZ dup EXTSB ;
398 M: ppc %alien-signed-2 0 LHA ;
400 M: ppc %alien-cell 0 LWZ ;
402 M: ppc %alien-float 0 LFS ;
403 M: ppc %alien-double 0 LFD ;
405 M: ppc %set-alien-integer-1 swap 0 STB ;
406 M: ppc %set-alien-integer-2 swap 0 STH ;
408 M: ppc %set-alien-cell swap 0 STW ;
410 M: ppc %set-alien-float swap 0 STFS ;
411 M: ppc %set-alien-double swap 0 STFD ;
413 : load-zone-ptr ( reg -- )
414 "nursery" f %alien-global ;
416 : load-allot-ptr ( nursery-ptr allot-ptr -- )
417 [ drop load-zone-ptr ] [ swap 4 LWZ ] 2bi ;
419 :: inc-allot-ptr ( nursery-ptr allot-ptr n -- )
420 scratch-reg allot-ptr n 8 align ADDI
421 scratch-reg nursery-ptr 4 STW ;
423 :: store-header ( dst class -- )
424 class type-number tag-fixnum scratch-reg LI
425 scratch-reg dst 0 STW ;
427 : store-tagged ( dst tag -- )
428 dupd tag-number ORI ;
430 M:: ppc %allot ( dst size class nursery-ptr -- )
431 nursery-ptr dst load-allot-ptr
432 nursery-ptr dst size inc-allot-ptr
433 dst class store-header
434 dst class store-tagged ;
436 : load-cards-offset ( dst -- )
437 [ "cards_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
439 : load-decks-offset ( dst -- )
440 [ "decks_offset" f %alien-global ] [ dup 0 LWZ ] bi ;
442 M:: ppc %write-barrier ( src card# table -- )
443 card-mark scratch-reg LI
446 table load-cards-offset
447 src card# card-bits SRWI
448 table scratch-reg card# STBX
451 table load-decks-offset
452 src card# deck-bits SRWI
453 table scratch-reg card# STBX ;
458 11 12 cell LWZ ! nursery.here -> r11
459 12 12 3 cells LWZ ! nursery.end -> r12
460 11 11 1024 ADDI ! add ALLOT_BUFFER_ZONE to here
461 11 0 12 CMP ! is here >= end?
463 %prepare-alien-invoke
464 "minor_gc" f %alien-invoke
465 "end" resolve-label ;
467 M: ppc %prologue ( n -- )
468 0 11 LOAD32 rc-absolute-ppc-2/2 rel-this
471 [ [ 1 1 ] dip neg ADDI ]
472 [ [ 11 1 ] dip xt-save STW ]
474 [ [ 11 1 ] dip next-save STW ]
475 [ [ 0 1 ] dip lr-save + STW ]
478 M: ppc %epilogue ( n -- )
479 #! At the end of each word that calls a subroutine, we store
480 #! the previous link register value in r0 by popping it off
481 #! the stack, set the link register to the contents of r0,
482 #! and jump to the link register.
483 [ [ 0 1 ] dip lr-save + LWZ ]
484 [ [ 1 1 ] dip ADDI ] bi
487 :: (%boolean) ( dst temp word -- )
489 dst \ f tag-number %load-immediate
490 "end" get word execute
491 dst \ t %load-reference
492 "end" get resolve-label ; inline
494 : %boolean ( dst temp cc -- )
496 { cc< [ \ BLT (%boolean) ] }
497 { cc<= [ \ BLE (%boolean) ] }
498 { cc> [ \ BGT (%boolean) ] }
499 { cc>= [ \ BGE (%boolean) ] }
500 { cc= [ \ BEQ (%boolean) ] }
501 { cc/= [ \ BNE (%boolean) ] }
504 : (%compare) ( src1 src2 -- ) [ 0 ] dip CMP ; inline
505 : (%compare-imm) ( src1 src2 -- ) [ 0 ] 2dip CMPI ; inline
506 : (%compare-float) ( src1 src2 -- ) [ 0 ] dip FCMPU ; inline
508 M: ppc %compare (%compare) %boolean ;
509 M: ppc %compare-imm (%compare-imm) %boolean ;
510 M: ppc %compare-float (%compare-float) %boolean ;
512 : %branch ( label cc -- )
522 M: ppc %compare-branch (%compare) %branch ;
523 M: ppc %compare-imm-branch (%compare-imm) %branch ;
524 M: ppc %compare-float-branch (%compare-float) %branch ;
526 M: ppc %spill-integer ( src n -- ) spill-integer@ 1 swap STW ;
527 M: ppc %reload-integer ( dst n -- ) spill-integer@ 1 swap LWZ ;
529 M: ppc %spill-float ( src n -- ) spill-float@ 1 swap STFD ;
530 M: ppc %reload-float ( dst n -- ) spill-float@ 1 swap LFD ;
534 M: int-regs return-reg drop 3 ;
535 M: int-regs param-regs drop { 3 4 5 6 7 8 9 10 } ;
536 M: float-regs return-reg drop 1 ;
538 M: int-regs %save-param-reg drop 1 rot local@ STW ;
539 M: int-regs %load-param-reg drop 1 rot local@ LWZ ;
541 GENERIC: STF ( src dst off reg-class -- )
543 M: single-float-regs STF drop STFS ;
544 M: double-float-regs STF drop STFD ;
546 M: float-regs %save-param-reg [ 1 rot local@ ] dip STF ;
548 GENERIC: LF ( dst src off reg-class -- )
550 M: single-float-regs LF drop LFS ;
551 M: double-float-regs LF drop LFD ;
553 M: float-regs %load-param-reg [ 1 rot local@ ] dip LF ;
555 M: stack-params %load-param-reg ( stack reg reg-class -- )
556 drop [ 0 1 rot local@ LWZ 0 1 ] dip param@ STW ;
558 : next-param@ ( n -- x ) param@ stack-frame get total-size>> + ;
560 M: stack-params %save-param-reg ( stack reg reg-class -- )
561 #! Funky. Read the parameter from the caller's stack frame.
562 #! This word is used in callbacks
564 [ 0 1 ] dip next-param@ LWZ
565 [ 0 1 ] dip local@ STW ;
567 M: ppc %prepare-unbox ( -- )
568 ! First parameter is top of stack
570 ds-reg dup cell SUBI ;
572 M: ppc %unbox ( n reg-class func -- )
573 ! Value must be in r3
576 ! Store the return value on the C stack
577 over [ [ return-reg ] keep %save-param-reg ] [ 2drop ] if ;
579 M: ppc %unbox-long-long ( n func -- )
580 ! Value must be in r3:r4
583 ! Store the return value on the C stack
585 [ [ 3 1 ] dip local@ STW ]
586 [ [ 4 1 ] dip cell + local@ STW ] bi
589 M: ppc %unbox-large-struct ( n c-type -- )
590 ! Value must be in r3
591 ! Compute destination address and load struct size
592 [ [ 4 1 ] dip local@ ADDI ] [ heap-size 5 LI ] bi*
594 "to_value_struct" f %alien-invoke ;
596 M: ppc %box ( n reg-class func -- )
597 ! If the source is a stack location, load it into freg #0.
598 ! If the source is f, then we assume the value is already in
600 [ over [ 0 over param-reg swap %load-param-reg ] [ 2drop ] if ] dip
603 M: ppc %box-long-long ( n func -- )
606 [ [ 3 1 ] dip local@ LWZ ]
607 [ [ 4 1 ] dip cell + local@ LWZ ] bi
609 ] dip f %alien-invoke ;
611 : struct-return@ ( n -- n )
612 [ stack-frame get params>> ] unless* local@ ;
614 M: ppc %prepare-box-struct ( -- )
615 #! Compute target address for value struct return
616 3 1 f struct-return@ ADDI
619 M: ppc %box-large-struct ( n c-type -- )
620 ! If n = f, then we're boxing a returned struct
621 ! Compute destination address and load struct size
622 [ [ 3 1 ] dip struct-return@ ADDI ] [ heap-size 4 LI ] bi*
624 "box_value_struct" f %alien-invoke ;
626 M: ppc %prepare-alien-invoke
627 #! Save Factor stack pointers in case the C code calls a
628 #! callback which does a GC, which must reliably trace
630 scratch-reg "stack_chain" f %alien-global
631 scratch-reg scratch-reg 0 LWZ
633 ds-reg scratch-reg 8 STW
634 rs-reg scratch-reg 12 STW ;
636 M: ppc %alien-invoke ( symbol dll -- )
637 [ 11 ] 2dip %alien-global 11 MTLR BLRL ;
639 M: ppc %alien-callback ( quot -- )
640 3 swap %load-reference "c_to_factor" f %alien-invoke ;
642 M: ppc %prepare-alien-indirect ( -- )
643 "unbox_alien" f %alien-invoke
646 M: ppc %alien-indirect ( -- )
649 M: ppc %callback-value ( ctype -- )
650 ! Save top of data stack
653 ! Restore data/call/retain stacks
654 "unnest_stacks" f %alien-invoke
655 ! Restore top of data stack
657 ! Unbox former top of data stack to return registers
660 M: ppc small-enough? ( n -- ? ) -32768 32767 between? ;
662 M: ppc return-struct-in-registers? ( c-type -- ? )
663 c-type return-in-registers?>> ;
665 M: ppc %box-small-struct ( c-type -- )
666 #! Box a <= 16-byte struct returned in r3:r4:r5:r6
668 "box_medium_struct" f %alien-invoke ;
670 : %unbox-struct-1 ( -- )
671 ! Alien must be in r3.
672 "alien_offset" f %alien-invoke
675 : %unbox-struct-2 ( -- )
676 ! Alien must be in r3.
677 "alien_offset" f %alien-invoke
681 : %unbox-struct-4 ( -- )
682 ! Alien must be in r3.
683 "alien_offset" f %alien-invoke
689 M: ppc %unbox-small-struct ( size -- )
690 #! Alien must be in EAX.
691 heap-size cell align cell /i {
692 { 1 [ %unbox-struct-1 ] }
693 { 2 [ %unbox-struct-2 ] }
694 { 4 [ %unbox-struct-4 ] }
700 { [ os macosx? ] [ "cpu.ppc.macosx" require ] }
701 { [ os linux? ] [ "cpu.ppc.linux" require ] }
704 "complex-double" c-type t >>return-in-registers? drop