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 ! 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: temp-reg-1 cpu ( -- reg )
21 HOOK: temp-reg-2 cpu ( -- reg )
23 HOOK: param-reg-1 cpu ( -- reg )
24 HOOK: param-reg-2 cpu ( -- reg )
26 HOOK: pic-tail-reg cpu ( -- reg )
28 M: x86 %load-immediate MOV ;
30 M: x86 %load-reference swap 0 MOV rc-absolute-cell rel-immediate ;
32 HOOK: ds-reg cpu ( -- reg )
33 HOOK: rs-reg cpu ( -- reg )
35 : reg-stack ( n reg -- op ) swap cells neg [+] ;
37 GENERIC: loc>operand ( loc -- operand )
39 M: ds-loc loc>operand n>> ds-reg reg-stack ;
40 M: rs-loc loc>operand n>> rs-reg reg-stack ;
42 M: x86 %peek loc>operand MOV ;
43 M: x86 %replace loc>operand swap MOV ;
44 : (%inc) ( n reg -- ) swap cells dup 0 > [ ADD ] [ neg SUB ] if ; inline
45 M: x86 %inc-d ( n -- ) ds-reg (%inc) ;
46 M: x86 %inc-r ( n -- ) rs-reg (%inc) ;
48 : align-stack ( n -- n' )
49 os macosx? cpu x86.64? or [ 16 align ] when ;
51 HOOK: reserved-area-size cpu ( -- n )
53 M: x86 stack-frame-size ( stack-frame -- i )
54 [ spill-counts>> [ swap reg-size * ] { } assoc>map sum ]
62 M: x86 %call ( word -- ) 0 CALL rc-relative rel-word-pic ;
64 : xt-tail-pic-offset ( -- n )
65 #! See the comment in vm/cpu-x86.hpp
68 M: x86 %jump ( word -- )
69 pic-tail-reg 0 MOV xt-tail-pic-offset rc-absolute-cell rel-here
70 0 JMP rc-relative rel-word-pic-tail ;
72 M: x86 %jump-label ( label -- ) 0 JMP rc-relative label-fixup ;
74 M: x86 %return ( -- ) 0 RET ;
76 : code-alignment ( align -- n )
77 [ building get [ integer? ] count dup ] dip align swap - ;
82 M: x86 %dispatch-label ( label -- )
83 0 cell, rc-absolute-cell label-fixup ;
85 :: (%slot) ( obj slot tag temp -- op )
87 temp tag neg [+] ; inline
89 :: (%slot-imm) ( obj slot tag -- op )
90 obj slot cells tag - [+] ; inline
92 M: x86 %slot ( dst obj slot tag temp -- ) (%slot) MOV ;
93 M: x86 %slot-imm ( dst obj slot tag -- ) (%slot-imm) MOV ;
94 M: x86 %set-slot ( src obj slot tag temp -- ) (%slot) swap MOV ;
95 M: x86 %set-slot-imm ( src obj slot tag -- ) (%slot-imm) swap MOV ;
98 M: x86 %add-imm [+] LEA ;
100 M: x86 %sub-imm neg [+] LEA ;
101 M: x86 %mul nip swap IMUL2 ;
102 M: x86 %mul-imm nip IMUL2 ;
103 M: x86 %and nip AND ;
104 M: x86 %and-imm nip AND ;
106 M: x86 %or-imm nip OR ;
107 M: x86 %xor nip XOR ;
108 M: x86 %xor-imm nip XOR ;
109 M: x86 %shl-imm nip SHL ;
110 M: x86 %shr-imm nip SHR ;
111 M: x86 %sar-imm nip SAR ;
112 M: x86 %not drop NOT ;
115 : ?MOV ( dst src -- )
116 2dup = [ 2drop ] [ MOV ] if ; inline
118 :: move>args ( src1 src2 -- )
120 { [ src1 param-reg-2 = ] [ param-reg-1 src2 ?MOV param-reg-1 param-reg-2 XCHG ] }
121 { [ src1 param-reg-1 = ] [ param-reg-2 src2 ?MOV ] }
122 { [ src2 param-reg-1 = ] [ param-reg-2 src1 ?MOV param-reg-1 param-reg-2 XCHG ] }
123 { [ src2 param-reg-2 = ] [ param-reg-1 src1 ?MOV ] }
130 HOOK: %alien-invoke-tail cpu ( func dll -- )
132 :: overflow-template ( src1 src2 insn inverse func -- )
133 <label> "no-overflow" set
136 "no-overflow" get JNO
137 src1 src2 inverse call
139 %prepare-alien-invoke
141 "no-overflow" resolve-label ; inline
143 :: overflow-template-tail ( src1 src2 insn inverse func -- )
144 <label> "no-overflow" set
146 "no-overflow" get JNO
147 src1 src2 inverse call
149 %prepare-alien-invoke
150 func f %alien-invoke-tail
151 "no-overflow" resolve-label
155 M: x86 %fixnum-add ( src1 src2 -- )
156 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template ;
158 M: x86 %fixnum-add-tail ( src1 src2 -- )
159 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template-tail ;
161 M: x86 %fixnum-sub ( src1 src2 -- )
162 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template ;
164 M: x86 %fixnum-sub-tail ( src1 src2 -- )
165 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template-tail ;
167 M:: x86 %fixnum-mul ( src1 src2 temp1 temp2 -- )
168 "no-overflow" define-label
170 temp1 tag-bits get SAR
173 "no-overflow" get JNO
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
179 "no-overflow" resolve-label ;
181 M:: x86 %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
182 "overflow" define-label
184 temp1 tag-bits get SAR
189 "overflow" resolve-label
191 param-reg-1 tag-bits get SAR
192 param-reg-2 tag-bits get SAR
193 %prepare-alien-invoke
194 "overflow_fixnum_multiply" f %alien-invoke-tail ;
196 : bignum@ ( reg n -- op )
197 cells bignum tag-number - [+] ; inline
199 M:: x86 %integer>bignum ( dst src temp -- )
200 #! on entry, inreg is a signed 32-bit quantity
201 #! exits with tagged ptr to bignum in outreg
202 #! 1 cell header, 1 cell length, 1 cell sign, + digits
203 #! length is the # of digits + sign
206 ! Load cached zero value
207 dst 0 >bignum %load-reference
209 ! Is it zero? Then just go to the end and return this zero
212 dst 4 cells bignum temp %allot
214 dst 1 bignum@ 2 tag-fixnum MOV
216 dst 3 bignum@ src MOV
219 temp cell-bits 1- SAR
222 dst 2 bignum@ temp MOV
223 ! Make negative value positive
229 dst 3 bignum@ temp MOV
233 M:: x86 %bignum>integer ( dst src temp -- )
237 temp src 1 bignum@ MOV
238 ! if the length is 1, its just the sign and nothing else,
241 temp 1 tag-fixnum CMP
244 dst src 3 bignum@ MOV
246 temp src 2 bignum@ MOV
247 ! convert it into -1 or 1
256 M: x86 %add-float nip ADDSD ;
257 M: x86 %sub-float nip SUBSD ;
258 M: x86 %mul-float nip MULSD ;
259 M: x86 %div-float nip DIVSD ;
261 M: x86 %integer>float CVTSI2SD ;
262 M: x86 %float>integer CVTTSD2SI ;
264 M: x86 %copy ( dst src -- ) ?MOV ;
266 M: x86 %copy-float ( dst src -- )
267 2dup = [ 2drop ] [ MOVSD ] if ;
269 M: x86 %unbox-float ( dst src -- )
270 float-offset [+] MOVSD ;
272 M:: x86 %unbox-any-c-ptr ( dst src temp -- )
274 { "is-byte-array" "end" "start" } [ define-label ] each
277 ! We come back here with displaced aliens
278 "start" resolve-label
280 temp \ f tag-number CMP
282 ! Is the object an alien?
283 temp header-offset [+] alien type-number tag-fixnum CMP
284 "is-byte-array" get JNE
285 ! If so, load the offset and add it to the address
286 dst temp alien-offset [+] ADD
287 ! Now recurse on the underlying alien
288 temp temp underlying-alien-offset [+] MOV
290 "is-byte-array" resolve-label
291 ! Add byte array address to address being computed
293 ! Add an offset to start of byte array's data
294 dst byte-array-offset ADD
298 M:: x86 %box-float ( dst src temp -- )
299 dst 16 float temp %allot
300 dst float-offset [+] src MOVSD ;
302 : alien@ ( reg n -- op ) cells alien tag-number - [+] ;
304 M:: x86 %box-alien ( dst src temp -- )
307 dst \ f tag-number MOV
310 dst 4 cells alien temp %allot
311 dst 1 alien@ \ f tag-number MOV
312 dst 2 alien@ \ f tag-number MOV
313 ! Store src in alien-offset slot
318 : small-reg-4 ( reg -- reg' )
339 : small-reg-2 ( reg -- reg' )
351 : small-reg-1 ( reg -- reg' )
359 : small-reg ( reg size -- reg' )
361 { 1 [ small-reg-1 ] }
362 { 2 [ small-reg-2 ] }
363 { 4 [ small-reg-4 ] }
366 : small-regs ( -- regs ) { EAX ECX EDX EBX } ; inline
368 : small-reg-that-isn't ( exclude -- reg' )
369 small-regs swap [ small-reg-4 ] map '[ _ memq? not ] find nip ;
371 : with-save/restore ( reg quot -- )
372 [ drop PUSH ] [ call ] [ drop POP ] 2tri ; inline
374 :: with-small-register ( dst exclude quot: ( new-dst -- ) -- )
375 #! If the destination register overlaps a small register, we
376 #! call the quot with that. Otherwise, we find a small
377 #! register that is not in exclude, and call quot, saving
378 #! and restoring the small register.
379 dst small-reg-4 small-regs memq? [ dst quot call ] [
380 exclude small-reg-that-isn't
381 [ quot call ] with-save/restore
384 M:: x86 %string-nth ( dst src index temp -- )
386 dst { src index temp } [| new-dst |
387 ! Load the least significant 7 bits into new-dst.
388 ! 8th bit indicates whether we have to load from
389 ! the aux vector or not.
390 temp src index [+] LEA
391 new-dst 1 small-reg temp string-offset [+] MOV
392 new-dst new-dst 1 small-reg MOVZX
393 ! Do we have to look at the aux vector?
396 ! Yes, this is a non-ASCII character. Load aux vector
397 temp src string-aux-offset [+] MOV
403 new-dst 2 small-reg new-dst byte-array-offset [+] MOV
404 new-dst new-dst 2 small-reg MOVZX
410 ] with-small-register ;
412 M:: x86 %set-string-nth-fast ( ch str index temp -- )
413 ch { index str temp } [| new-ch |
415 temp str index [+] LEA
416 temp string-offset [+] new-ch 1 small-reg MOV
417 ] with-small-register ;
419 :: %alien-integer-getter ( dst src size quot -- )
420 dst { src } [| new-dst |
421 new-dst dup size small-reg dup src [] MOV
424 ] with-small-register ; inline
426 : %alien-unsigned-getter ( dst src size -- )
427 [ MOVZX ] %alien-integer-getter ; inline
429 M: x86 %alien-unsigned-1 1 %alien-unsigned-getter ;
430 M: x86 %alien-unsigned-2 2 %alien-unsigned-getter ;
432 : %alien-signed-getter ( dst src size -- )
433 [ MOVSX ] %alien-integer-getter ; inline
435 M: x86 %alien-signed-1 1 %alien-signed-getter ;
436 M: x86 %alien-signed-2 2 %alien-signed-getter ;
437 M: x86 %alien-signed-4 4 %alien-signed-getter ;
439 M: x86 %alien-unsigned-4 4 [ 2drop ] %alien-integer-getter ;
441 M: x86 %alien-cell [] MOV ;
442 M: x86 %alien-float dupd [] MOVSS dup CVTSS2SD ;
443 M: x86 %alien-double [] MOVSD ;
445 :: %alien-integer-setter ( ptr value size -- )
446 value { ptr } [| new-value |
448 ptr [] new-value size small-reg MOV
449 ] with-small-register ; inline
451 M: x86 %set-alien-integer-1 1 %alien-integer-setter ;
452 M: x86 %set-alien-integer-2 2 %alien-integer-setter ;
453 M: x86 %set-alien-integer-4 4 %alien-integer-setter ;
454 M: x86 %set-alien-cell [ [] ] dip MOV ;
455 M: x86 %set-alien-float dup dup CVTSD2SS [ [] ] dip MOVSS ;
456 M: x86 %set-alien-double [ [] ] dip MOVSD ;
458 : load-zone-ptr ( reg -- )
459 #! Load pointer to start of zone array
460 0 MOV "nursery" f rc-absolute-cell rel-dlsym ;
462 : load-allot-ptr ( nursery-ptr allot-ptr -- )
463 [ drop load-zone-ptr ] [ swap cell [+] MOV ] 2bi ;
465 : inc-allot-ptr ( nursery-ptr n -- )
466 [ cell [+] ] dip 8 align ADD ;
468 : store-header ( temp class -- )
469 [ [] ] [ type-number tag-fixnum ] bi* MOV ;
471 : store-tagged ( dst tag -- )
474 M:: x86 %allot ( dst size class nursery-ptr -- )
475 nursery-ptr dst load-allot-ptr
476 dst class store-header
477 dst class store-tagged
478 nursery-ptr size inc-allot-ptr ;
480 M:: x86 %write-barrier ( src card# table -- )
481 #! Mark the card pointed to by vreg.
485 table "cards_offset" f %alien-global
487 table card# [+] card-mark <byte> MOV
490 card# deck-bits card-bits - SHR
491 table "decks_offset" f %alien-global
493 table card# [+] card-mark <byte> MOV ;
497 temp-reg-1 load-zone-ptr
498 temp-reg-2 temp-reg-1 cell [+] MOV
500 temp-reg-1 temp-reg-1 3 cells [+] MOV
501 temp-reg-2 temp-reg-1 CMP
503 %prepare-alien-invoke
504 "minor_gc" f %alien-invoke
505 "end" resolve-label ;
508 [ 0 MOV ] 2dip rc-absolute-cell rel-dlsym ;
510 HOOK: stack-reg cpu ( -- reg )
512 : decr-stack-reg ( n -- )
513 dup 0 = [ drop ] [ stack-reg swap SUB ] if ;
515 : incr-stack-reg ( n -- )
516 dup 0 = [ drop ] [ stack-reg swap ADD ] if ;
518 M: x86 %epilogue ( n -- ) cell - incr-stack-reg ;
520 :: %boolean ( dst temp word -- )
521 dst \ f tag-number MOV
522 temp 0 MOV \ t rc-absolute-cell rel-immediate
523 dst temp word execute ; inline
525 M: x86 %compare ( dst temp cc src1 src2 -- )
527 { cc< [ \ CMOVL %boolean ] }
528 { cc<= [ \ CMOVLE %boolean ] }
529 { cc> [ \ CMOVG %boolean ] }
530 { cc>= [ \ CMOVGE %boolean ] }
531 { cc= [ \ CMOVE %boolean ] }
532 { cc/= [ \ CMOVNE %boolean ] }
535 M: x86 %compare-imm ( dst temp cc src1 src2 -- )
538 M: x86 %compare-float ( dst temp cc src1 src2 -- )
540 { cc< [ \ CMOVB %boolean ] }
541 { cc<= [ \ CMOVBE %boolean ] }
542 { cc> [ \ CMOVA %boolean ] }
543 { cc>= [ \ CMOVAE %boolean ] }
544 { cc= [ \ CMOVE %boolean ] }
545 { cc/= [ \ CMOVNE %boolean ] }
548 M: x86 %compare-branch ( label cc src1 src2 -- )
558 M: x86 %compare-imm-branch ( label src1 src2 cc -- )
561 M: x86 %compare-float-branch ( label cc src1 src2 -- )
571 : stack@ ( n -- op ) stack-reg swap [+] ;
573 : param@ ( n -- op ) reserved-area-size + stack@ ;
575 : spill-integer-base ( stack-frame -- n )
576 [ params>> ] [ return>> ] bi + reserved-area-size + ;
578 : spill-integer@ ( n -- op )
580 stack-frame get spill-integer-base
583 : spill-float-base ( stack-frame -- n )
584 [ spill-integer-base ]
585 [ spill-counts>> int-regs swap at int-regs reg-size * ]
588 : spill-float@ ( n -- op )
589 double-float-regs reg-size *
590 stack-frame get spill-float-base
593 M: x86 %spill-integer ( src n -- ) spill-integer@ swap MOV ;
594 M: x86 %reload-integer ( dst n -- ) spill-integer@ MOV ;
596 M: x86 %spill-float ( src n -- ) spill-float@ swap MOVSD ;
597 M: x86 %reload-float ( dst n -- ) spill-float@ MOVSD ;
599 M: x86 %loop-entry 16 code-alignment [ NOP ] times ;
601 M: int-regs %save-param-reg drop [ param@ ] dip MOV ;
602 M: int-regs %load-param-reg drop swap param@ MOV ;
604 GENERIC: MOVSS/D ( dst src reg-class -- )
606 M: single-float-regs MOVSS/D drop MOVSS ;
607 M: double-float-regs MOVSS/D drop MOVSD ;
609 M: float-regs %save-param-reg [ param@ ] 2dip MOVSS/D ;
610 M: float-regs %load-param-reg [ swap param@ ] dip MOVSS/D ;
612 GENERIC: push-return-reg ( reg-class -- )
613 GENERIC: load-return-reg ( n reg-class -- )
614 GENERIC: store-return-reg ( n reg-class -- )
616 M: x86 %prepare-alien-invoke
617 #! Save Factor stack pointers in case the C code calls a
618 #! callback which does a GC, which must reliably trace
620 temp-reg-1 "stack_chain" f %alien-global
621 temp-reg-1 temp-reg-1 [] MOV
622 temp-reg-1 [] stack-reg MOV
623 temp-reg-1 [] cell SUB
624 temp-reg-1 2 cells [+] ds-reg MOV
625 temp-reg-1 3 cells [+] rs-reg MOV ;
627 M: x86 value-struct? drop t ;
629 M: x86 small-enough? ( n -- ? )
630 HEX: -80000000 HEX: 7fffffff between? ;
632 : next-stack@ ( n -- operand )
633 #! nth parameter from the next stack frame. Used to box
634 #! input values to callbacks; the callback has its own
635 #! stack frame set up, and we want to read the frame
636 #! set up by the caller.
637 stack-frame get total-size>> + stack@ ;