1 ! Copyright (C) 2005, 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors assocs alien alien.c-types arrays strings
4 cpu.x86.assembler cpu.x86.assembler.private cpu.architecture
5 kernel kernel.private math memory namespaces make sequences
6 words system layouts combinators math.order fry locals
7 compiler.constants compiler.cfg.registers
8 compiler.cfg.instructions compiler.cfg.intrinsics
9 compiler.cfg.stack-frame compiler.codegen compiler.codegen.fixup ;
12 << enable-fixnum-log2 >>
14 ! Add some methods to the assembler to be more useful to the backend
15 M: label JMP 0 JMP rc-relative label-fixup ;
16 M: label JUMPcc [ 0 ] dip JUMPcc rc-relative label-fixup ;
18 M: x86 two-operand? t ;
20 HOOK: stack-reg cpu ( -- reg )
22 HOOK: reserved-area-size cpu ( -- n )
24 : stack@ ( n -- op ) stack-reg swap [+] ;
26 : param@ ( n -- op ) reserved-area-size + stack@ ;
28 : spill-integer@ ( n -- op ) spill-integer-offset param@ ;
30 : spill-float@ ( n -- op ) spill-float-offset param@ ;
32 : gc-root@ ( n -- op ) gc-root-offset param@ ;
34 : decr-stack-reg ( n -- )
35 dup 0 = [ drop ] [ stack-reg swap SUB ] if ;
37 : incr-stack-reg ( n -- )
38 dup 0 = [ drop ] [ stack-reg swap ADD ] if ;
40 : align-stack ( n -- n' )
41 os macosx? cpu x86.64? or [ 16 align ] when ;
43 M: x86 stack-frame-size ( stack-frame -- i )
44 (stack-frame-size) 3 cells reserved-area-size + + align-stack ;
46 HOOK: temp-reg-1 cpu ( -- reg )
47 HOOK: temp-reg-2 cpu ( -- reg )
49 HOOK: param-reg-1 cpu ( -- reg )
50 HOOK: param-reg-2 cpu ( -- reg )
52 HOOK: pic-tail-reg cpu ( -- reg )
54 M: x86 %load-immediate MOV ;
56 M: x86 %load-reference swap 0 MOV rc-absolute-cell rel-immediate ;
58 HOOK: ds-reg cpu ( -- reg )
59 HOOK: rs-reg cpu ( -- reg )
61 : reg-stack ( n reg -- op ) swap cells neg [+] ;
63 GENERIC: loc>operand ( loc -- operand )
65 M: ds-loc loc>operand n>> ds-reg reg-stack ;
66 M: rs-loc loc>operand n>> rs-reg reg-stack ;
68 M: x86 %peek loc>operand MOV ;
69 M: x86 %replace loc>operand swap MOV ;
70 : (%inc) ( n reg -- ) swap cells dup 0 > [ ADD ] [ neg SUB ] if ; inline
71 M: x86 %inc-d ( n -- ) ds-reg (%inc) ;
72 M: x86 %inc-r ( n -- ) rs-reg (%inc) ;
74 M: x86 %call ( word -- ) 0 CALL rc-relative rel-word-pic ;
76 : xt-tail-pic-offset ( -- n )
77 #! See the comment in vm/cpu-x86.hpp
80 M: x86 %jump ( word -- )
81 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here
82 0 JMP rc-relative rel-word-pic-tail ;
84 M: x86 %jump-label ( label -- ) 0 JMP rc-relative label-fixup ;
86 M: x86 %return ( -- ) 0 RET ;
88 : code-alignment ( align -- n )
89 [ building get length dup ] dip align swap - ;
94 M: x86 %dispatch-label ( label -- )
95 0 cell, rc-absolute-cell label-fixup ;
97 :: (%slot) ( obj slot tag temp -- op )
99 temp tag neg [+] ; inline
101 :: (%slot-imm) ( obj slot tag -- op )
102 obj slot cells tag - [+] ; inline
104 M: x86 %slot ( dst obj slot tag temp -- ) (%slot) MOV ;
105 M: x86 %slot-imm ( dst obj slot tag -- ) (%slot-imm) MOV ;
106 M: x86 %set-slot ( src obj slot tag temp -- ) (%slot) swap MOV ;
107 M: x86 %set-slot-imm ( src obj slot tag -- ) (%slot-imm) swap MOV ;
109 M: x86 %add [+] LEA ;
110 M: x86 %add-imm [+] LEA ;
111 M: x86 %sub nip SUB ;
112 M: x86 %sub-imm neg [+] LEA ;
113 M: x86 %mul nip swap IMUL2 ;
114 M: x86 %mul-imm nip IMUL2 ;
115 M: x86 %and nip AND ;
116 M: x86 %and-imm nip AND ;
118 M: x86 %or-imm nip OR ;
119 M: x86 %xor nip XOR ;
120 M: x86 %xor-imm nip XOR ;
121 M: x86 %shl-imm nip SHL ;
122 M: x86 %shr-imm nip SHR ;
123 M: x86 %sar-imm nip SAR ;
124 M: x86 %not drop NOT ;
127 : ?MOV ( dst src -- )
128 2dup = [ 2drop ] [ MOV ] if ; inline
130 :: move>args ( src1 src2 -- )
132 { [ src1 param-reg-2 = ] [ param-reg-1 src2 ?MOV param-reg-1 param-reg-2 XCHG ] }
133 { [ src1 param-reg-1 = ] [ param-reg-2 src2 ?MOV ] }
134 { [ src2 param-reg-1 = ] [ param-reg-2 src1 ?MOV param-reg-1 param-reg-2 XCHG ] }
135 { [ src2 param-reg-2 = ] [ param-reg-1 src1 ?MOV ] }
142 HOOK: %alien-invoke-tail cpu ( func dll -- )
144 :: overflow-template ( src1 src2 insn inverse func -- )
145 <label> "no-overflow" set
148 "no-overflow" get JNO
149 src1 src2 inverse call
151 %prepare-alien-invoke
153 "no-overflow" resolve-label ; inline
155 :: overflow-template-tail ( src1 src2 insn inverse func -- )
156 <label> "no-overflow" set
158 "no-overflow" get JNO
159 src1 src2 inverse call
161 %prepare-alien-invoke
162 func f %alien-invoke-tail
163 "no-overflow" resolve-label
167 M: x86 %fixnum-add ( src1 src2 -- )
168 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template ;
170 M: x86 %fixnum-add-tail ( src1 src2 -- )
171 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template-tail ;
173 M: x86 %fixnum-sub ( src1 src2 -- )
174 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template ;
176 M: x86 %fixnum-sub-tail ( src1 src2 -- )
177 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template-tail ;
179 M:: x86 %fixnum-mul ( src1 src2 temp1 temp2 -- )
180 "no-overflow" define-label
182 temp1 tag-bits get SAR
185 "no-overflow" get JNO
187 param-reg-1 tag-bits get SAR
188 param-reg-2 tag-bits get SAR
189 %prepare-alien-invoke
190 "overflow_fixnum_multiply" f %alien-invoke
191 "no-overflow" resolve-label ;
193 M:: x86 %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
194 "overflow" define-label
196 temp1 tag-bits get SAR
201 "overflow" resolve-label
203 param-reg-1 tag-bits get SAR
204 param-reg-2 tag-bits get SAR
205 %prepare-alien-invoke
206 "overflow_fixnum_multiply" f %alien-invoke-tail ;
208 : bignum@ ( reg n -- op )
209 cells bignum tag-number - [+] ; inline
211 M:: x86 %integer>bignum ( dst src temp -- )
212 #! on entry, inreg is a signed 32-bit quantity
213 #! exits with tagged ptr to bignum in outreg
214 #! 1 cell header, 1 cell length, 1 cell sign, + digits
215 #! length is the # of digits + sign
218 ! Load cached zero value
219 dst 0 >bignum %load-reference
221 ! Is it zero? Then just go to the end and return this zero
224 dst 4 cells bignum temp %allot
226 dst 1 bignum@ 2 tag-fixnum MOV
228 dst 3 bignum@ src MOV
231 temp cell-bits 1- SAR
234 dst 2 bignum@ temp MOV
235 ! Make negative value positive
241 dst 3 bignum@ temp MOV
245 M:: x86 %bignum>integer ( dst src temp -- )
249 temp src 1 bignum@ MOV
250 ! if the length is 1, its just the sign and nothing else,
253 temp 1 tag-fixnum CMP
256 dst src 3 bignum@ MOV
258 temp src 2 bignum@ MOV
259 ! convert it into -1 or 1
268 M: x86 %add-float nip ADDSD ;
269 M: x86 %sub-float nip SUBSD ;
270 M: x86 %mul-float nip MULSD ;
271 M: x86 %div-float nip DIVSD ;
273 M: x86 %integer>float CVTSI2SD ;
274 M: x86 %float>integer CVTTSD2SI ;
276 M: x86 %copy ( dst src -- ) ?MOV ;
278 M: x86 %copy-float ( dst src -- )
279 2dup = [ 2drop ] [ MOVSD ] if ;
281 M: x86 %unbox-float ( dst src -- )
282 float-offset [+] MOVSD ;
284 M:: x86 %unbox-any-c-ptr ( dst src temp -- )
286 { "is-byte-array" "end" "start" } [ define-label ] each
289 ! We come back here with displaced aliens
290 "start" resolve-label
292 temp \ f tag-number CMP
294 ! Is the object an alien?
295 temp header-offset [+] alien type-number tag-fixnum CMP
296 "is-byte-array" get JNE
297 ! If so, load the offset and add it to the address
298 dst temp alien-offset [+] ADD
299 ! Now recurse on the underlying alien
300 temp temp underlying-alien-offset [+] MOV
302 "is-byte-array" resolve-label
303 ! Add byte array address to address being computed
305 ! Add an offset to start of byte array's data
306 dst byte-array-offset ADD
310 M:: x86 %box-float ( dst src temp -- )
311 dst 16 float temp %allot
312 dst float-offset [+] src MOVSD ;
314 : alien@ ( reg n -- op ) cells alien tag-number - [+] ;
316 M:: x86 %box-alien ( dst src temp -- )
319 dst \ f tag-number MOV
322 dst 4 cells alien temp %allot
323 dst 1 alien@ \ f tag-number MOV
324 dst 2 alien@ \ f tag-number MOV
325 ! Store src in alien-offset slot
330 : small-reg-8 ( reg -- reg' )
351 : small-reg-4 ( reg -- reg' )
363 : small-reg-2 ( reg -- reg' )
375 : small-reg-1 ( reg -- reg' )
383 : small-reg ( reg size -- reg' )
385 { 1 [ small-reg-1 ] }
386 { 2 [ small-reg-2 ] }
387 { 4 [ small-reg-4 ] }
388 { 8 [ small-reg-8 ] }
391 HOOK: small-regs cpu ( -- regs )
393 M: x86.32 small-regs { EAX ECX EDX EBX } ;
394 M: x86.64 small-regs { RAX RCX RDX RBX } ;
396 HOOK: small-reg-native cpu ( reg -- reg' )
398 M: x86.32 small-reg-native small-reg-4 ;
399 M: x86.64 small-reg-native small-reg-8 ;
401 : small-reg-that-isn't ( exclude -- reg' )
402 small-regs swap [ small-reg-native ] map '[ _ memq? not ] find nip ;
404 : with-save/restore ( reg quot -- )
405 [ drop PUSH ] [ call ] [ drop POP ] 2tri ; inline
407 :: with-small-register ( dst exclude quot: ( new-dst -- ) -- )
408 #! If the destination register overlaps a small register, we
409 #! call the quot with that. Otherwise, we find a small
410 #! register that is not in exclude, and call quot, saving
411 #! and restoring the small register.
412 dst small-reg-native small-regs memq? [ dst quot call ] [
413 exclude small-reg-that-isn't
414 [ quot call ] with-save/restore
417 M:: x86 %string-nth ( dst src index temp -- )
419 dst { src index temp } [| new-dst |
420 ! Load the least significant 7 bits into new-dst.
421 ! 8th bit indicates whether we have to load from
422 ! the aux vector or not.
423 temp src index [+] LEA
424 new-dst 1 small-reg temp string-offset [+] MOV
425 new-dst new-dst 1 small-reg MOVZX
426 ! Do we have to look at the aux vector?
429 ! Yes, this is a non-ASCII character. Load aux vector
430 temp src string-aux-offset [+] MOV
436 new-dst 2 small-reg new-dst byte-array-offset [+] MOV
437 new-dst new-dst 2 small-reg MOVZX
443 ] with-small-register ;
445 M:: x86 %set-string-nth-fast ( ch str index temp -- )
446 ch { index str temp } [| new-ch |
448 temp str index [+] LEA
449 temp string-offset [+] new-ch 1 small-reg MOV
450 ] with-small-register ;
452 :: %alien-integer-getter ( dst src size quot -- )
453 dst { src } [| new-dst |
454 new-dst dup size small-reg dup src [] MOV
457 ] with-small-register ; inline
459 : %alien-unsigned-getter ( dst src size -- )
460 [ MOVZX ] %alien-integer-getter ; inline
462 M: x86 %alien-unsigned-1 1 %alien-unsigned-getter ;
463 M: x86 %alien-unsigned-2 2 %alien-unsigned-getter ;
465 : %alien-signed-getter ( dst src size -- )
466 [ MOVSX ] %alien-integer-getter ; inline
468 M: x86 %alien-signed-1 1 %alien-signed-getter ;
469 M: x86 %alien-signed-2 2 %alien-signed-getter ;
470 M: x86 %alien-signed-4 4 %alien-signed-getter ;
472 M: x86 %alien-unsigned-4 4 [ 2drop ] %alien-integer-getter ;
474 M: x86 %alien-cell [] MOV ;
475 M: x86 %alien-float dupd [] MOVSS dup CVTSS2SD ;
476 M: x86 %alien-double [] MOVSD ;
478 :: %alien-integer-setter ( ptr value size -- )
479 value { ptr } [| new-value |
481 ptr [] new-value size small-reg MOV
482 ] with-small-register ; inline
484 M: x86 %set-alien-integer-1 1 %alien-integer-setter ;
485 M: x86 %set-alien-integer-2 2 %alien-integer-setter ;
486 M: x86 %set-alien-integer-4 4 %alien-integer-setter ;
487 M: x86 %set-alien-cell [ [] ] dip MOV ;
488 M: x86 %set-alien-float dup dup CVTSD2SS [ [] ] dip MOVSS ;
489 M: x86 %set-alien-double [ [] ] dip MOVSD ;
491 : load-zone-ptr ( reg -- )
492 #! Load pointer to start of zone array
493 0 MOV "nursery" f rc-absolute-cell rel-dlsym ;
495 : load-allot-ptr ( nursery-ptr allot-ptr -- )
496 [ drop load-zone-ptr ] [ swap cell [+] MOV ] 2bi ;
498 : inc-allot-ptr ( nursery-ptr n -- )
499 [ cell [+] ] dip 8 align ADD ;
501 : store-header ( temp class -- )
502 [ [] ] [ type-number tag-fixnum ] bi* MOV ;
504 : store-tagged ( dst tag -- )
507 M:: x86 %allot ( dst size class nursery-ptr -- )
508 nursery-ptr dst load-allot-ptr
509 dst class store-header
510 dst class store-tagged
511 nursery-ptr size inc-allot-ptr ;
513 M:: x86 %write-barrier ( src card# table -- )
514 #! Mark the card pointed to by vreg.
518 table "cards_offset" f %alien-global
520 table card# [+] card-mark <byte> MOV
523 card# deck-bits card-bits - SHR
524 table "decks_offset" f %alien-global
526 table card# [+] card-mark <byte> MOV ;
528 :: check-nursery ( temp1 temp2 -- )
530 temp2 temp1 cell [+] MOV
532 temp1 temp1 3 cells [+] MOV
535 GENERIC# save-gc-root 1 ( gc-root operand temp -- )
537 M:: spill-slot save-gc-root ( gc-root spill-slot temp -- )
538 temp spill-slot n>> spill-integer@ MOV
539 gc-root gc-root@ temp MOV ;
541 M:: word save-gc-root ( gc-root register temp -- )
542 gc-root gc-root@ register MOV ;
544 : save-gc-roots ( gc-roots temp -- )
545 '[ _ save-gc-root ] assoc-each ;
547 GENERIC# load-gc-root 1 ( gc-root operand temp -- )
549 M:: spill-slot load-gc-root ( gc-root spill-slot temp -- )
550 temp gc-root gc-root@ MOV
551 spill-slot n>> spill-integer@ temp MOV ;
553 M:: word load-gc-root ( gc-root register temp -- )
554 register gc-root gc-root@ MOV ;
556 : load-gc-roots ( gc-roots temp -- )
557 '[ _ load-gc-root ] assoc-each ;
559 :: call-gc ( gc-root-count -- )
560 ! Pass pointer to start of GC roots as first parameter
561 param-reg-1 gc-root-base param@ LEA
562 ! Pass number of roots as second parameter
563 param-reg-2 gc-root-count MOV
565 %prepare-alien-invoke
566 "inline_gc" f %alien-invoke ;
568 M:: x86 %gc ( temp1 temp2 gc-roots gc-root-count -- )
570 temp1 temp2 check-nursery
572 gc-roots temp1 save-gc-roots
573 gc-root-count call-gc
574 gc-roots temp1 load-gc-roots
575 "end" resolve-label ;
578 [ 0 MOV ] 2dip rc-absolute-cell rel-dlsym ;
580 M: x86 %epilogue ( n -- ) cell - incr-stack-reg ;
582 :: %boolean ( dst temp word -- )
583 dst \ f tag-number MOV
584 temp 0 MOV \ t rc-absolute-cell rel-immediate
585 dst temp word execute ; inline
587 M: x86 %compare ( dst temp cc src1 src2 -- )
589 { cc< [ \ CMOVL %boolean ] }
590 { cc<= [ \ CMOVLE %boolean ] }
591 { cc> [ \ CMOVG %boolean ] }
592 { cc>= [ \ CMOVGE %boolean ] }
593 { cc= [ \ CMOVE %boolean ] }
594 { cc/= [ \ CMOVNE %boolean ] }
597 M: x86 %compare-imm ( dst temp cc src1 src2 -- )
600 M: x86 %compare-float ( dst temp cc src1 src2 -- )
602 { cc< [ \ CMOVB %boolean ] }
603 { cc<= [ \ CMOVBE %boolean ] }
604 { cc> [ \ CMOVA %boolean ] }
605 { cc>= [ \ CMOVAE %boolean ] }
606 { cc= [ \ CMOVE %boolean ] }
607 { cc/= [ \ CMOVNE %boolean ] }
610 M: x86 %compare-branch ( label cc src1 src2 -- )
620 M: x86 %compare-imm-branch ( label src1 src2 cc -- )
623 M: x86 %compare-float-branch ( label cc src1 src2 -- )
633 M: x86 %spill-integer ( src n -- ) spill-integer@ swap MOV ;
634 M: x86 %reload-integer ( dst n -- ) spill-integer@ MOV ;
636 M: x86 %spill-float ( src n -- ) spill-float@ swap MOVSD ;
637 M: x86 %reload-float ( dst n -- ) spill-float@ MOVSD ;
639 M: x86 %loop-entry 16 code-alignment [ NOP ] times ;
641 M: int-regs %save-param-reg drop [ param@ ] dip MOV ;
642 M: int-regs %load-param-reg drop swap param@ MOV ;
644 GENERIC: MOVSS/D ( dst src reg-class -- )
646 M: single-float-regs MOVSS/D drop MOVSS ;
647 M: double-float-regs MOVSS/D drop MOVSD ;
649 M: float-regs %save-param-reg [ param@ ] 2dip MOVSS/D ;
650 M: float-regs %load-param-reg [ swap param@ ] dip MOVSS/D ;
652 GENERIC: push-return-reg ( reg-class -- )
653 GENERIC: load-return-reg ( n reg-class -- )
654 GENERIC: store-return-reg ( n reg-class -- )
656 M: x86 %prepare-alien-invoke
657 #! Save Factor stack pointers in case the C code calls a
658 #! callback which does a GC, which must reliably trace
660 temp-reg-1 "stack_chain" f %alien-global
661 temp-reg-1 temp-reg-1 [] MOV
662 temp-reg-1 [] stack-reg MOV
663 temp-reg-1 [] cell SUB
664 temp-reg-1 2 cells [+] ds-reg MOV
665 temp-reg-1 3 cells [+] rs-reg MOV ;
667 M: x86 value-struct? drop t ;
669 M: x86 small-enough? ( n -- ? )
670 HEX: -80000000 HEX: 7fffffff between? ;
672 : next-stack@ ( n -- operand )
673 #! nth parameter from the next stack frame. Used to box
674 #! input values to callbacks; the callback has its own
675 #! stack frame set up, and we want to read the frame
676 #! set up by the caller.
677 stack-frame get total-size>> + stack@ ;