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.codegen
9 compiler.codegen.fixup ;
12 M: x86 two-operand? t ;
14 HOOK: temp-reg-1 cpu ( -- reg )
15 HOOK: temp-reg-2 cpu ( -- reg )
17 HOOK: param-reg-1 cpu ( -- reg )
18 HOOK: param-reg-2 cpu ( -- reg )
20 M: x86 %load-immediate MOV ;
22 M: x86 %load-indirect swap 0 MOV rc-absolute-cell rel-immediate ;
24 HOOK: ds-reg cpu ( -- reg )
25 HOOK: rs-reg cpu ( -- reg )
27 : reg-stack ( n reg -- op ) swap cells neg [+] ;
29 GENERIC: loc>operand ( loc -- operand )
31 M: ds-loc loc>operand n>> ds-reg reg-stack ;
32 M: rs-loc loc>operand n>> rs-reg reg-stack ;
34 M: x86 %peek loc>operand MOV ;
35 M: x86 %replace loc>operand swap MOV ;
36 : (%inc) ( n reg -- ) swap cells dup 0 > [ ADD ] [ neg SUB ] if ; inline
37 M: x86 %inc-d ( n -- ) ds-reg (%inc) ;
38 M: x86 %inc-r ( n -- ) rs-reg (%inc) ;
40 : align-stack ( n -- n' )
41 os macosx? cpu x86.64? or [ 16 align ] when ;
43 HOOK: reserved-area-size cpu ( -- n )
45 M: x86 stack-frame-size ( stack-frame -- i )
46 [ spill-counts>> [ swap reg-size * ] { } assoc>map sum ]
54 M: x86 %call ( label -- ) CALL ;
55 M: x86 %jump-label ( label -- ) JMP ;
56 M: x86 %return ( -- ) 0 RET ;
58 : code-alignment ( align -- n )
59 [ building get [ integer? ] count dup ] dip align swap - ;
64 M: x86 %dispatch-label ( word -- )
65 0 cell, rc-absolute-cell rel-word ;
67 :: (%slot) ( obj slot tag temp -- op )
69 temp tag neg [+] ; inline
71 :: (%slot-imm) ( obj slot tag -- op )
72 obj slot cells tag - [+] ; inline
74 M: x86 %slot ( dst obj slot tag temp -- ) (%slot) MOV ;
75 M: x86 %slot-imm ( dst obj slot tag -- ) (%slot-imm) MOV ;
76 M: x86 %set-slot ( src obj slot tag temp -- ) (%slot) swap MOV ;
77 M: x86 %set-slot-imm ( src obj slot tag -- ) (%slot-imm) swap MOV ;
80 M: x86 %add-imm [+] LEA ;
82 M: x86 %sub-imm neg [+] LEA ;
83 M: x86 %mul nip swap IMUL2 ;
84 M: x86 %mul-imm nip IMUL2 ;
86 M: x86 %and-imm nip AND ;
88 M: x86 %or-imm nip OR ;
90 M: x86 %xor-imm nip XOR ;
91 M: x86 %shl-imm nip SHL ;
92 M: x86 %shr-imm nip SHR ;
93 M: x86 %sar-imm nip SAR ;
94 M: x86 %not drop NOT ;
97 2dup = [ 2drop ] [ MOV ] if ; inline
99 :: move>args ( src1 src2 -- )
101 { [ src1 param-reg-2 = ] [ param-reg-1 src2 ?MOV param-reg-1 param-reg-2 XCHG ] }
102 { [ src1 param-reg-1 = ] [ param-reg-2 src2 ?MOV ] }
103 { [ src2 param-reg-1 = ] [ param-reg-2 src1 ?MOV param-reg-1 param-reg-2 XCHG ] }
104 { [ src2 param-reg-2 = ] [ param-reg-1 src1 ?MOV ] }
111 HOOK: %alien-invoke-tail cpu ( func dll -- )
113 :: overflow-template ( src1 src2 insn inverse func -- )
114 <label> "no-overflow" set
117 "no-overflow" get JNO
118 src1 src2 inverse call
120 %prepare-alien-invoke
122 "no-overflow" resolve-label ; inline
124 :: overflow-template-tail ( src1 src2 insn inverse func -- )
125 <label> "no-overflow" set
127 "no-overflow" get JNO
128 src1 src2 inverse call
130 %prepare-alien-invoke
131 func f %alien-invoke-tail
132 "no-overflow" resolve-label
136 M: x86 %fixnum-add ( src1 src2 -- )
137 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template ;
139 M: x86 %fixnum-add-tail ( src1 src2 -- )
140 [ ADD ] [ SUB ] "overflow_fixnum_add" overflow-template-tail ;
142 M: x86 %fixnum-sub ( src1 src2 -- )
143 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template ;
145 M: x86 %fixnum-sub-tail ( src1 src2 -- )
146 [ SUB ] [ ADD ] "overflow_fixnum_subtract" overflow-template-tail ;
148 M:: x86 %fixnum-mul ( src1 src2 temp1 temp2 -- )
149 "no-overflow" define-label
151 temp1 tag-bits get SAR
154 "no-overflow" get JNO
156 param-reg-1 tag-bits get SAR
157 param-reg-2 tag-bits get SAR
158 %prepare-alien-invoke
159 "overflow_fixnum_multiply" f %alien-invoke
160 "no-overflow" resolve-label ;
162 M:: x86 %fixnum-mul-tail ( src1 src2 temp1 temp2 -- )
163 "overflow" define-label
165 temp1 tag-bits get SAR
170 "overflow" resolve-label
172 param-reg-1 tag-bits get SAR
173 param-reg-2 tag-bits get SAR
174 %prepare-alien-invoke
175 "overflow_fixnum_multiply" f %alien-invoke-tail ;
177 : bignum@ ( reg n -- op )
178 cells bignum tag-number - [+] ; inline
180 M:: x86 %integer>bignum ( dst src temp -- )
181 #! on entry, inreg is a signed 32-bit quantity
182 #! exits with tagged ptr to bignum in outreg
183 #! 1 cell header, 1 cell length, 1 cell sign, + digits
184 #! length is the # of digits + sign
187 ! Load cached zero value
188 dst 0 >bignum %load-indirect
190 ! Is it zero? Then just go to the end and return this zero
193 dst 4 cells bignum temp %allot
195 dst 1 bignum@ 2 tag-fixnum MOV
197 dst 3 bignum@ src MOV
200 temp cell-bits 1- SAR
203 dst 2 bignum@ temp MOV
204 ! Make negative value positive
210 dst 3 bignum@ temp MOV
214 M:: x86 %bignum>integer ( dst src temp -- )
218 temp src 1 bignum@ MOV
219 ! if the length is 1, its just the sign and nothing else,
222 temp 1 tag-fixnum CMP
225 dst src 3 bignum@ MOV
227 temp src 2 bignum@ MOV
228 ! convert it into -1 or 1
237 M: x86 %add-float nip ADDSD ;
238 M: x86 %sub-float nip SUBSD ;
239 M: x86 %mul-float nip MULSD ;
240 M: x86 %div-float nip DIVSD ;
242 M: x86 %integer>float CVTSI2SD ;
243 M: x86 %float>integer CVTTSD2SI ;
245 M: x86 %copy ( dst src -- ) ?MOV ;
247 M: x86 %copy-float ( dst src -- )
248 2dup = [ 2drop ] [ MOVSD ] if ;
250 M: x86 %unbox-float ( dst src -- )
251 float-offset [+] MOVSD ;
253 M:: x86 %unbox-any-c-ptr ( dst src temp -- )
255 { "is-byte-array" "end" "start" } [ define-label ] each
258 ! We come back here with displaced aliens
259 "start" resolve-label
261 temp \ f tag-number CMP
263 ! Is the object an alien?
264 temp header-offset [+] alien type-number tag-fixnum CMP
265 "is-byte-array" get JNE
266 ! If so, load the offset and add it to the address
267 dst temp alien-offset [+] ADD
268 ! Now recurse on the underlying alien
269 temp temp underlying-alien-offset [+] MOV
271 "is-byte-array" resolve-label
272 ! Add byte array address to address being computed
274 ! Add an offset to start of byte array's data
275 dst byte-array-offset ADD
279 M:: x86 %box-float ( dst src temp -- )
280 dst 16 float temp %allot
281 dst float-offset [+] src MOVSD ;
283 : alien@ ( reg n -- op ) cells alien tag-number - [+] ;
285 M:: x86 %box-alien ( dst src temp -- )
288 dst \ f tag-number MOV
291 dst 4 cells alien temp %allot
292 dst 1 alien@ \ f tag-number MOV
293 dst 2 alien@ \ f tag-number MOV
294 ! Store src in alien-offset slot
299 : small-reg-4 ( reg -- reg' )
320 : small-reg-2 ( reg -- reg' )
332 : small-reg-1 ( reg -- reg' )
340 : small-reg ( reg size -- reg' )
342 { 1 [ small-reg-1 ] }
343 { 2 [ small-reg-2 ] }
344 { 4 [ small-reg-4 ] }
347 : small-regs ( -- regs ) { EAX ECX EDX EBX } ; inline
349 : small-reg-that-isn't ( exclude -- reg' )
350 small-regs swap [ small-reg-4 ] map '[ _ memq? not ] find nip ;
352 : with-save/restore ( reg quot -- )
353 [ drop PUSH ] [ call ] [ drop POP ] 2tri ; inline
355 :: with-small-register ( dst exclude quot: ( new-dst -- ) -- )
356 #! If the destination register overlaps a small register, we
357 #! call the quot with that. Otherwise, we find a small
358 #! register that is not in exclude, and call quot, saving
359 #! and restoring the small register.
360 dst small-reg-4 small-regs memq? [ dst quot call ] [
361 exclude small-reg-that-isn't
362 [ quot call ] with-save/restore
365 M:: x86 %string-nth ( dst src index temp -- )
367 dst { src index temp } [| new-dst |
368 temp src index [+] LEA
369 new-dst 1 small-reg temp string-offset [+] MOV
370 new-dst new-dst 1 small-reg MOVZX
371 temp src string-aux-offset [+] MOV
372 temp \ f tag-number CMP
377 new-dst 2 small-reg new-dst byte-array-offset [+] MOV
378 new-dst new-dst 2 small-reg MOVZX
383 ] with-small-register ;
385 :: %alien-integer-getter ( dst src size quot -- )
386 dst { src } [| new-dst |
387 new-dst dup size small-reg dup src [] MOV
390 ] with-small-register ; inline
392 : %alien-unsigned-getter ( dst src size -- )
393 [ MOVZX ] %alien-integer-getter ; inline
395 M: x86 %alien-unsigned-1 1 %alien-unsigned-getter ;
396 M: x86 %alien-unsigned-2 2 %alien-unsigned-getter ;
398 : %alien-signed-getter ( dst src size -- )
399 [ MOVSX ] %alien-integer-getter ; inline
401 M: x86 %alien-signed-1 1 %alien-signed-getter ;
402 M: x86 %alien-signed-2 2 %alien-signed-getter ;
403 M: x86 %alien-signed-4 4 %alien-signed-getter ;
405 M: x86 %alien-unsigned-4 4 [ 2drop ] %alien-integer-getter ;
407 M: x86 %alien-cell [] MOV ;
408 M: x86 %alien-float dupd [] MOVSS dup CVTSS2SD ;
409 M: x86 %alien-double [] MOVSD ;
411 :: %alien-integer-setter ( ptr value size -- )
412 value { ptr } [| new-value |
414 ptr [] new-value size small-reg MOV
415 ] with-small-register ; inline
417 M: x86 %set-alien-integer-1 1 %alien-integer-setter ;
418 M: x86 %set-alien-integer-2 2 %alien-integer-setter ;
419 M: x86 %set-alien-integer-4 4 %alien-integer-setter ;
420 M: x86 %set-alien-cell [ [] ] dip MOV ;
421 M: x86 %set-alien-float dup dup CVTSD2SS [ [] ] dip MOVSS ;
422 M: x86 %set-alien-double [ [] ] dip MOVSD ;
424 : load-zone-ptr ( reg -- )
425 #! Load pointer to start of zone array
426 0 MOV "nursery" f rc-absolute-cell rel-dlsym ;
428 : load-allot-ptr ( nursery-ptr allot-ptr -- )
429 [ drop load-zone-ptr ] [ swap cell [+] MOV ] 2bi ;
431 : inc-allot-ptr ( nursery-ptr n -- )
432 [ cell [+] ] dip 8 align ADD ;
434 : store-header ( temp class -- )
435 [ [] ] [ type-number tag-fixnum ] bi* MOV ;
437 : store-tagged ( dst tag -- )
440 M:: x86 %allot ( dst size class nursery-ptr -- )
441 nursery-ptr dst load-allot-ptr
442 dst class store-header
443 dst class store-tagged
444 nursery-ptr size inc-allot-ptr ;
446 HOOK: %alien-global cpu ( symbol dll register -- )
448 M:: x86 %write-barrier ( src card# table -- )
449 #! Mark the card pointed to by vreg.
453 "cards_offset" f table %alien-global
454 table card# [+] card-mark <byte> MOV
457 card# deck-bits card-bits - SHR
458 "decks_offset" f table %alien-global
459 table card# [+] card-mark <byte> MOV ;
463 temp-reg-1 load-zone-ptr
464 temp-reg-2 temp-reg-1 cell [+] MOV
466 temp-reg-1 temp-reg-1 3 cells [+] MOV
467 temp-reg-2 temp-reg-1 CMP
469 %prepare-alien-invoke
470 "minor_gc" f %alien-invoke
471 "end" resolve-label ;
473 HOOK: stack-reg cpu ( -- reg )
475 : decr-stack-reg ( n -- )
476 dup 0 = [ drop ] [ stack-reg swap SUB ] if ;
478 : incr-stack-reg ( n -- )
479 dup 0 = [ drop ] [ stack-reg swap ADD ] if ;
481 M: x86 %epilogue ( n -- ) cell - incr-stack-reg ;
483 :: %boolean ( dst temp word -- )
484 dst \ f tag-number MOV
485 temp 0 MOV \ t rc-absolute-cell rel-immediate
486 dst temp word execute ; inline
488 M: x86 %compare ( dst temp cc src1 src2 -- )
490 { cc< [ \ CMOVL %boolean ] }
491 { cc<= [ \ CMOVLE %boolean ] }
492 { cc> [ \ CMOVG %boolean ] }
493 { cc>= [ \ CMOVGE %boolean ] }
494 { cc= [ \ CMOVE %boolean ] }
495 { cc/= [ \ CMOVNE %boolean ] }
498 M: x86 %compare-imm ( dst temp cc src1 src2 -- )
501 M: x86 %compare-float ( dst temp cc src1 src2 -- )
503 { cc< [ \ CMOVB %boolean ] }
504 { cc<= [ \ CMOVBE %boolean ] }
505 { cc> [ \ CMOVA %boolean ] }
506 { cc>= [ \ CMOVAE %boolean ] }
507 { cc= [ \ CMOVE %boolean ] }
508 { cc/= [ \ CMOVNE %boolean ] }
511 M: x86 %compare-branch ( label cc src1 src2 -- )
521 M: x86 %compare-imm-branch ( label src1 src2 cc -- )
524 M: x86 %compare-float-branch ( label cc src1 src2 -- )
534 : stack@ ( n -- op ) stack-reg swap [+] ;
536 : param@ ( n -- op ) reserved-area-size + stack@ ;
538 : spill-integer-base ( stack-frame -- n )
539 [ params>> ] [ return>> ] bi + reserved-area-size + ;
541 : spill-integer@ ( n -- op )
543 stack-frame get spill-integer-base
546 : spill-float-base ( stack-frame -- n )
547 [ spill-integer-base ]
548 [ spill-counts>> int-regs swap at int-regs reg-size * ]
551 : spill-float@ ( n -- op )
552 double-float-regs reg-size *
553 stack-frame get spill-float-base
556 M: x86 %spill-integer ( src n -- ) spill-integer@ swap MOV ;
557 M: x86 %reload-integer ( dst n -- ) spill-integer@ MOV ;
559 M: x86 %spill-float ( src n -- ) spill-float@ swap MOVSD ;
560 M: x86 %reload-float ( dst n -- ) spill-float@ MOVSD ;
562 M: x86 %loop-entry 16 code-alignment [ NOP ] times ;
564 M: int-regs %save-param-reg drop [ param@ ] dip MOV ;
565 M: int-regs %load-param-reg drop swap param@ MOV ;
567 GENERIC: MOVSS/D ( dst src reg-class -- )
569 M: single-float-regs MOVSS/D drop MOVSS ;
570 M: double-float-regs MOVSS/D drop MOVSD ;
572 M: float-regs %save-param-reg [ param@ ] 2dip MOVSS/D ;
573 M: float-regs %load-param-reg [ swap param@ ] dip MOVSS/D ;
575 GENERIC: push-return-reg ( reg-class -- )
576 GENERIC: load-return-reg ( n reg-class -- )
577 GENERIC: store-return-reg ( n reg-class -- )
579 M: x86 %prepare-alien-invoke
580 #! Save Factor stack pointers in case the C code calls a
581 #! callback which does a GC, which must reliably trace
583 "stack_chain" f temp-reg-1 %alien-global
584 temp-reg-1 [] stack-reg MOV
585 temp-reg-1 [] cell SUB
586 temp-reg-1 2 cells [+] ds-reg MOV
587 temp-reg-1 3 cells [+] rs-reg MOV ;
589 M: x86 value-struct? drop t ;
591 M: x86 small-enough? ( n -- ? )
592 HEX: -80000000 HEX: 7fffffff between? ;
594 : next-stack@ ( n -- operand )
595 #! nth parameter from the next stack frame. Used to box
596 #! input values to callbacks; the callback has its own
597 #! stack frame set up, and we want to read the frame
598 #! set up by the caller.
599 stack-frame get total-size>> + stack@ ;