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.codegen compiler.codegen.fixup ;
12 << enable-fixnum-log2 >>
14 M: x86 two-operand? t ;
16 HOOK: temp-reg-1 cpu ( -- reg )
17 HOOK: temp-reg-2 cpu ( -- reg )
19 HOOK: param-reg-1 cpu ( -- reg )
20 HOOK: param-reg-2 cpu ( -- reg )
22 M: x86 %load-immediate MOV ;
24 M: x86 %load-reference swap 0 MOV rc-absolute-cell rel-immediate ;
26 HOOK: ds-reg cpu ( -- reg )
27 HOOK: rs-reg cpu ( -- reg )
29 : reg-stack ( n reg -- op ) swap cells neg [+] ;
31 GENERIC: loc>operand ( loc -- operand )
33 M: ds-loc loc>operand n>> ds-reg reg-stack ;
34 M: rs-loc loc>operand n>> rs-reg reg-stack ;
36 M: x86 %peek loc>operand MOV ;
37 M: x86 %replace loc>operand swap MOV ;
38 : (%inc) ( n reg -- ) swap cells dup 0 > [ ADD ] [ neg SUB ] if ; inline
39 M: x86 %inc-d ( n -- ) ds-reg (%inc) ;
40 M: x86 %inc-r ( n -- ) rs-reg (%inc) ;
42 : align-stack ( n -- n' )
43 os macosx? cpu x86.64? or [ 16 align ] when ;
45 HOOK: reserved-area-size cpu ( -- n )
47 M: x86 stack-frame-size ( stack-frame -- i )
48 [ spill-counts>> [ swap reg-size * ] { } assoc>map sum ]
56 M: x86 %call ( label -- ) CALL ;
57 M: x86 %jump-label ( label -- ) JMP ;
58 M: x86 %return ( -- ) 0 RET ;
60 : code-alignment ( align -- n )
61 [ building get [ integer? ] count dup ] dip align swap - ;
66 M: x86 %dispatch-label ( word -- )
67 0 cell, rc-absolute-cell rel-word ;
69 :: (%slot) ( obj slot tag temp -- op )
71 temp tag neg [+] ; inline
73 :: (%slot-imm) ( obj slot tag -- op )
74 obj slot cells tag - [+] ; inline
76 M: x86 %slot ( dst obj slot tag temp -- ) (%slot) MOV ;
77 M: x86 %slot-imm ( dst obj slot tag -- ) (%slot-imm) MOV ;
78 M: x86 %set-slot ( src obj slot tag temp -- ) (%slot) swap MOV ;
79 M: x86 %set-slot-imm ( src obj slot tag -- ) (%slot-imm) swap MOV ;
82 M: x86 %add-imm [+] LEA ;
84 M: x86 %sub-imm neg [+] LEA ;
85 M: x86 %mul nip swap IMUL2 ;
86 M: x86 %mul-imm nip IMUL2 ;
88 M: x86 %and-imm nip AND ;
90 M: x86 %or-imm nip OR ;
92 M: x86 %xor-imm nip XOR ;
93 M: x86 %shl-imm nip SHL ;
94 M: x86 %shr-imm nip SHR ;
95 M: x86 %sar-imm nip SAR ;
96 M: x86 %not drop NOT ;
100 2dup = [ 2drop ] [ MOV ] if ; inline
102 :: move>args ( src1 src2 -- )
104 { [ src1 param-reg-2 = ] [ param-reg-1 src2 ?MOV param-reg-1 param-reg-2 XCHG ] }
105 { [ src1 param-reg-1 = ] [ param-reg-2 src2 ?MOV ] }
106 { [ src2 param-reg-1 = ] [ param-reg-2 src1 ?MOV param-reg-1 param-reg-2 XCHG ] }
107 { [ src2 param-reg-2 = ] [ param-reg-1 src1 ?MOV ] }
114 HOOK: %alien-invoke-tail cpu ( func dll -- )
116 :: overflow-template ( src1 src2 insn inverse func -- )
117 <label> "no-overflow" set
120 "no-overflow" get JNO
121 src1 src2 inverse call
123 %prepare-alien-invoke
125 "no-overflow" resolve-label ; inline
127 :: overflow-template-tail ( src1 src2 insn inverse func -- )
128 <label> "no-overflow" set
130 "no-overflow" get JNO
131 src1 src2 inverse call
133 %prepare-alien-invoke
134 func f %alien-invoke-tail
135 "no-overflow" resolve-label
139 M: x86 %fixnum-add ( src1 src2 -- )
140 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template ;
142 M: x86 %fixnum-add-tail ( src1 src2 -- )
143 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template-tail ;
145 M: x86 %fixnum-sub ( src1 src2 -- )
146 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template ;
148 M: x86 %fixnum-sub-tail ( src1 src2 -- )
149 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template-tail ;
151 M:: x86 %fixnum-mul ( src1 src2 temp1 temp2 -- )
152 "no-overflow" define-label
154 temp1 tag-bits get SAR
157 "no-overflow" get JNO
159 param-reg-1 tag-bits get SAR
160 param-reg-2 tag-bits get SAR
161 %prepare-alien-invoke
162 "overflow_fixnum_multiply" f %alien-invoke
163 "no-overflow" resolve-label ;
165 M:: x86 %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
166 "overflow" define-label
168 temp1 tag-bits get SAR
173 "overflow" resolve-label
175 param-reg-1 tag-bits get SAR
176 param-reg-2 tag-bits get SAR
177 %prepare-alien-invoke
178 "overflow_fixnum_multiply" f %alien-invoke-tail ;
180 : bignum@ ( reg n -- op )
181 cells bignum tag-number - [+] ; inline
183 M:: x86 %integer>bignum ( dst src temp -- )
184 #! on entry, inreg is a signed 32-bit quantity
185 #! exits with tagged ptr to bignum in outreg
186 #! 1 cell header, 1 cell length, 1 cell sign, + digits
187 #! length is the # of digits + sign
190 ! Load cached zero value
191 dst 0 >bignum %load-reference
193 ! Is it zero? Then just go to the end and return this zero
196 dst 4 cells bignum temp %allot
198 dst 1 bignum@ 2 tag-fixnum MOV
200 dst 3 bignum@ src MOV
203 temp cell-bits 1- SAR
206 dst 2 bignum@ temp MOV
207 ! Make negative value positive
213 dst 3 bignum@ temp MOV
217 M:: x86 %bignum>integer ( dst src temp -- )
221 temp src 1 bignum@ MOV
222 ! if the length is 1, its just the sign and nothing else,
225 temp 1 tag-fixnum CMP
228 dst src 3 bignum@ MOV
230 temp src 2 bignum@ MOV
231 ! convert it into -1 or 1
240 M: x86 %add-float nip ADDSD ;
241 M: x86 %sub-float nip SUBSD ;
242 M: x86 %mul-float nip MULSD ;
243 M: x86 %div-float nip DIVSD ;
245 M: x86 %integer>float CVTSI2SD ;
246 M: x86 %float>integer CVTTSD2SI ;
248 M: x86 %copy ( dst src -- ) ?MOV ;
250 M: x86 %copy-float ( dst src -- )
251 2dup = [ 2drop ] [ MOVSD ] if ;
253 M: x86 %unbox-float ( dst src -- )
254 float-offset [+] MOVSD ;
256 M:: x86 %unbox-any-c-ptr ( dst src temp -- )
258 { "is-byte-array" "end" "start" } [ define-label ] each
261 ! We come back here with displaced aliens
262 "start" resolve-label
264 temp \ f tag-number CMP
266 ! Is the object an alien?
267 temp header-offset [+] alien type-number tag-fixnum CMP
268 "is-byte-array" get JNE
269 ! If so, load the offset and add it to the address
270 dst temp alien-offset [+] ADD
271 ! Now recurse on the underlying alien
272 temp temp underlying-alien-offset [+] MOV
274 "is-byte-array" resolve-label
275 ! Add byte array address to address being computed
277 ! Add an offset to start of byte array's data
278 dst byte-array-offset ADD
282 M:: x86 %box-float ( dst src temp -- )
283 dst 16 float temp %allot
284 dst float-offset [+] src MOVSD ;
286 : alien@ ( reg n -- op ) cells alien tag-number - [+] ;
288 M:: x86 %box-alien ( dst src temp -- )
291 dst \ f tag-number MOV
294 dst 4 cells alien temp %allot
295 dst 1 alien@ \ f tag-number MOV
296 dst 2 alien@ \ f tag-number MOV
297 ! Store src in alien-offset slot
302 : small-reg-4 ( reg -- reg' )
323 : small-reg-2 ( reg -- reg' )
335 : small-reg-1 ( reg -- reg' )
343 : small-reg ( reg size -- reg' )
345 { 1 [ small-reg-1 ] }
346 { 2 [ small-reg-2 ] }
347 { 4 [ small-reg-4 ] }
350 : small-regs ( -- regs ) { EAX ECX EDX EBX } ; inline
352 : small-reg-that-isn't ( exclude -- reg' )
353 small-regs swap [ small-reg-4 ] map '[ _ memq? not ] find nip ;
355 : with-save/restore ( reg quot -- )
356 [ drop PUSH ] [ call ] [ drop POP ] 2tri ; inline
358 :: with-small-register ( dst exclude quot: ( new-dst -- ) -- )
359 #! If the destination register overlaps a small register, we
360 #! call the quot with that. Otherwise, we find a small
361 #! register that is not in exclude, and call quot, saving
362 #! and restoring the small register.
363 dst small-reg-4 small-regs memq? [ dst quot call ] [
364 exclude small-reg-that-isn't
365 [ quot call ] with-save/restore
368 M:: x86 %string-nth ( dst src index temp -- )
370 dst { src index temp } [| new-dst |
371 ! Load the least significant 7 bits into new-dst.
372 ! 8th bit indicates whether we have to load from
373 ! the aux vector or not.
374 temp src index [+] LEA
375 new-dst 1 small-reg temp string-offset [+] MOV
376 new-dst new-dst 1 small-reg MOVZX
377 ! Do we have to look at the aux vector?
380 ! Yes, this is a non-ASCII character. Load aux vector
381 temp src string-aux-offset [+] MOV
387 new-dst 2 small-reg new-dst byte-array-offset [+] MOV
388 new-dst new-dst 2 small-reg MOVZX
394 ] with-small-register ;
396 M:: x86 %set-string-nth-fast ( ch str index temp -- )
397 ch { index str temp } [| new-ch |
399 temp str index [+] LEA
400 temp string-offset [+] new-ch 1 small-reg MOV
401 ] with-small-register ;
403 :: %alien-integer-getter ( dst src size quot -- )
404 dst { src } [| new-dst |
405 new-dst dup size small-reg dup src [] MOV
408 ] with-small-register ; inline
410 : %alien-unsigned-getter ( dst src size -- )
411 [ MOVZX ] %alien-integer-getter ; inline
413 M: x86 %alien-unsigned-1 1 %alien-unsigned-getter ;
414 M: x86 %alien-unsigned-2 2 %alien-unsigned-getter ;
416 : %alien-signed-getter ( dst src size -- )
417 [ MOVSX ] %alien-integer-getter ; inline
419 M: x86 %alien-signed-1 1 %alien-signed-getter ;
420 M: x86 %alien-signed-2 2 %alien-signed-getter ;
421 M: x86 %alien-signed-4 4 %alien-signed-getter ;
423 M: x86 %alien-unsigned-4 4 [ 2drop ] %alien-integer-getter ;
425 M: x86 %alien-cell [] MOV ;
426 M: x86 %alien-float dupd [] MOVSS dup CVTSS2SD ;
427 M: x86 %alien-double [] MOVSD ;
429 :: %alien-integer-setter ( ptr value size -- )
430 value { ptr } [| new-value |
432 ptr [] new-value size small-reg MOV
433 ] with-small-register ; inline
435 M: x86 %set-alien-integer-1 1 %alien-integer-setter ;
436 M: x86 %set-alien-integer-2 2 %alien-integer-setter ;
437 M: x86 %set-alien-integer-4 4 %alien-integer-setter ;
438 M: x86 %set-alien-cell [ [] ] dip MOV ;
439 M: x86 %set-alien-float dup dup CVTSD2SS [ [] ] dip MOVSS ;
440 M: x86 %set-alien-double [ [] ] dip MOVSD ;
442 : load-zone-ptr ( reg -- )
443 #! Load pointer to start of zone array
444 0 MOV "nursery" f rc-absolute-cell rel-dlsym ;
446 : load-allot-ptr ( nursery-ptr allot-ptr -- )
447 [ drop load-zone-ptr ] [ swap cell [+] MOV ] 2bi ;
449 : inc-allot-ptr ( nursery-ptr n -- )
450 [ cell [+] ] dip 8 align ADD ;
452 : store-header ( temp class -- )
453 [ [] ] [ type-number tag-fixnum ] bi* MOV ;
455 : store-tagged ( dst tag -- )
458 M:: x86 %allot ( dst size class nursery-ptr -- )
459 nursery-ptr dst load-allot-ptr
460 dst class store-header
461 dst class store-tagged
462 nursery-ptr size inc-allot-ptr ;
464 M:: x86 %write-barrier ( src card# table -- )
465 #! Mark the card pointed to by vreg.
469 table "cards_offset" f %alien-global
471 table card# [+] card-mark <byte> MOV
474 card# deck-bits card-bits - SHR
475 table "decks_offset" f %alien-global
477 table card# [+] card-mark <byte> MOV ;
481 temp-reg-1 load-zone-ptr
482 temp-reg-2 temp-reg-1 cell [+] MOV
484 temp-reg-1 temp-reg-1 3 cells [+] MOV
485 temp-reg-2 temp-reg-1 CMP
487 %prepare-alien-invoke
488 "minor_gc" f %alien-invoke
489 "end" resolve-label ;
492 [ 0 MOV ] 2dip rc-absolute-cell rel-dlsym ;
494 HOOK: stack-reg cpu ( -- reg )
496 : decr-stack-reg ( n -- )
497 dup 0 = [ drop ] [ stack-reg swap SUB ] if ;
499 : incr-stack-reg ( n -- )
500 dup 0 = [ drop ] [ stack-reg swap ADD ] if ;
502 M: x86 %epilogue ( n -- ) cell - incr-stack-reg ;
504 :: %boolean ( dst temp word -- )
505 dst \ f tag-number MOV
506 temp 0 MOV \ t rc-absolute-cell rel-immediate
507 dst temp word execute ; inline
509 M: x86 %compare ( dst temp cc src1 src2 -- )
511 { cc< [ \ CMOVL %boolean ] }
512 { cc<= [ \ CMOVLE %boolean ] }
513 { cc> [ \ CMOVG %boolean ] }
514 { cc>= [ \ CMOVGE %boolean ] }
515 { cc= [ \ CMOVE %boolean ] }
516 { cc/= [ \ CMOVNE %boolean ] }
519 M: x86 %compare-imm ( dst temp cc src1 src2 -- )
522 M: x86 %compare-float ( dst temp cc src1 src2 -- )
524 { cc< [ \ CMOVB %boolean ] }
525 { cc<= [ \ CMOVBE %boolean ] }
526 { cc> [ \ CMOVA %boolean ] }
527 { cc>= [ \ CMOVAE %boolean ] }
528 { cc= [ \ CMOVE %boolean ] }
529 { cc/= [ \ CMOVNE %boolean ] }
532 M: x86 %compare-branch ( label cc src1 src2 -- )
542 M: x86 %compare-imm-branch ( label src1 src2 cc -- )
545 M: x86 %compare-float-branch ( label cc src1 src2 -- )
555 : stack@ ( n -- op ) stack-reg swap [+] ;
557 : param@ ( n -- op ) reserved-area-size + stack@ ;
559 : spill-integer-base ( stack-frame -- n )
560 [ params>> ] [ return>> ] bi + reserved-area-size + ;
562 : spill-integer@ ( n -- op )
564 stack-frame get spill-integer-base
567 : spill-float-base ( stack-frame -- n )
568 [ spill-integer-base ]
569 [ spill-counts>> int-regs swap at int-regs reg-size * ]
572 : spill-float@ ( n -- op )
573 double-float-regs reg-size *
574 stack-frame get spill-float-base
577 M: x86 %spill-integer ( src n -- ) spill-integer@ swap MOV ;
578 M: x86 %reload-integer ( dst n -- ) spill-integer@ MOV ;
580 M: x86 %spill-float ( src n -- ) spill-float@ swap MOVSD ;
581 M: x86 %reload-float ( dst n -- ) spill-float@ MOVSD ;
583 M: x86 %loop-entry 16 code-alignment [ NOP ] times ;
585 M: int-regs %save-param-reg drop [ param@ ] dip MOV ;
586 M: int-regs %load-param-reg drop swap param@ MOV ;
588 GENERIC: MOVSS/D ( dst src reg-class -- )
590 M: single-float-regs MOVSS/D drop MOVSS ;
591 M: double-float-regs MOVSS/D drop MOVSD ;
593 M: float-regs %save-param-reg [ param@ ] 2dip MOVSS/D ;
594 M: float-regs %load-param-reg [ swap param@ ] dip MOVSS/D ;
596 GENERIC: push-return-reg ( reg-class -- )
597 GENERIC: load-return-reg ( n reg-class -- )
598 GENERIC: store-return-reg ( n reg-class -- )
600 M: x86 %prepare-alien-invoke
601 #! Save Factor stack pointers in case the C code calls a
602 #! callback which does a GC, which must reliably trace
604 temp-reg-1 "stack_chain" f %alien-global
605 temp-reg-1 temp-reg-1 [] MOV
606 temp-reg-1 [] stack-reg MOV
607 temp-reg-1 [] cell SUB
608 temp-reg-1 2 cells [+] ds-reg MOV
609 temp-reg-1 3 cells [+] rs-reg MOV ;
611 M: x86 value-struct? drop t ;
613 M: x86 small-enough? ( n -- ? )
614 HEX: -80000000 HEX: 7fffffff between? ;
616 : next-stack@ ( n -- operand )
617 #! nth parameter from the next stack frame. Used to box
618 #! input values to callbacks; the callback has its own
619 #! stack frame set up, and we want to read the frame
620 #! set up by the caller.
621 stack-frame get total-size>> + stack@ ;