1 ! Copyright (C) 2007, 2011 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: bootstrap.image.private compiler.constants
4 compiler.codegen.relocation compiler.units cpu.x86.assembler
5 cpu.x86.assembler.operands kernel kernel.private layouts
6 locals locals.backend make math math.private namespaces sequences
7 slots.private strings.private vocabs ;
12 ! C to Factor entry point
14 ! Optimizing compiler's side of callback accesses
15 ! arguments that are on the stack via the frame pointer.
16 ! On x86-32 fastcall, and x86-64, some arguments are passed
17 ! in registers, and so the only registers that are safe for
18 ! use here are frame-reg, nv-reg and vm-reg.
20 frame-reg stack-reg MOV
22 ! Save all non-volatile registers
28 vm-reg 0 MOV 0 rc-absolute-cell rel-vm
31 nv-reg vm-reg vm-context-offset [+] MOV
34 ! Switch over to the spare context
35 nv-reg vm-reg vm-spare-context-offset [+] MOV
36 vm-reg vm-context-offset [+] nv-reg MOV
38 ! Save C callstack pointer
39 nv-reg context-callstack-save-offset [+] stack-reg MOV
41 ! Load Factor stack pointers
42 stack-reg nv-reg context-callstack-bottom-offset [+] MOV
46 rs-reg nv-reg context-retainstack-offset [+] MOV
47 ds-reg nv-reg context-datastack-offset [+] MOV
49 ! Call into Factor code
50 link-reg 0 MOV f rc-absolute-cell rel-word
53 ! Load VM into vm-reg; only needed on x86-32, but doesn't
55 vm-reg 0 MOV 0 rc-absolute-cell rel-vm
57 ! Load C callstack pointer
58 nv-reg vm-reg vm-context-offset [+] MOV
59 stack-reg nv-reg context-callstack-save-offset [+] MOV
63 vm-reg vm-context-offset [+] nv-reg MOV
65 ! Restore non-volatile registers
68 nv-regs <reversed> [ POP ] each
72 ! Callbacks which return structs, or use stdcall/fastcall/thiscall,
73 ! need a parameter here.
75 ! See the comment for M\ x86.32 stack-cleanup in cpu.x86.32
76 HEX: ffff RET f rc-absolute-2 rel-untagged
77 ] callback-stub jit-define
81 temp0 0 MOV f rc-absolute-cell rel-literal
82 ! Bump profiling counter
83 temp0 profile-count-offset [+] 1 tag-fixnum ADD
85 temp0 temp0 word-code-offset [+] MOV
86 ! Compute word entry point
87 temp0 compiled-header-size ADD
90 ] jit-profiling jit-define
94 temp0 0 MOV f rc-absolute-cell rel-literal
95 ! increment datastack pointer
96 ds-reg bootstrap-cell ADD
97 ! store literal on datastack
102 0 CALL f rc-relative rel-word-pic
103 ] jit-word-call jit-define
105 ! The *-signal-handler subprimitives are special-cased in vm/quotations.cpp
106 ! not to trigger generation of a stack frame, so they can
107 ! peform their own prolog/epilog preserving registers.
110 jit-signal-handler-prolog :> frame-size
112 temp0 vm-reg vm-signal-handler-addr-offset [+] MOV
114 frame-size jit-signal-handler-epilog
116 ] \ signal-handler define-sub-primitive
118 : leaf-frame-size ( -- n ) 4 bootstrap-cells ;
121 jit-signal-handler-prolog :> frame-size
123 temp0 vm-reg vm-signal-handler-addr-offset [+] MOV
125 frame-size jit-signal-handler-epilog
126 ! Pop the fake leaf frame along with our return address
127 leaf-frame-size bootstrap-cell - RET
128 ] \ leaf-signal-handler define-sub-primitive
131 jit-signal-handler-prolog :> frame-size
132 temp0 vm-reg vm-signal-handler-addr-offset [+] MOV
134 frame-size jit-signal-handler-epilog
136 ] \ ffi-signal-handler define-sub-primitive
139 jit-signal-handler-prolog :> frame-size
140 temp0 vm-reg vm-signal-handler-addr-offset [+] MOV
142 frame-size jit-signal-handler-epilog
143 red-zone-size 16 bootstrap-cell - + RET
144 ] \ ffi-leaf-signal-handler define-sub-primitive
150 ds-reg bootstrap-cell SUB
151 ! compare boolean with f
152 temp0 \ f type-number CMP
153 ! jump to true branch if not equal
154 0 JNE f rc-relative rel-word
155 ! jump to false branch if equal
156 0 JMP f rc-relative rel-word
160 rs-reg bootstrap-cell ADD
162 ds-reg bootstrap-cell SUB
163 rs-reg [] temp0 MOV ;
166 rs-reg 2 bootstrap-cells ADD
168 temp1 ds-reg -1 bootstrap-cells [+] MOV
169 ds-reg 2 bootstrap-cells SUB
171 rs-reg -1 bootstrap-cells [+] temp1 MOV ;
174 rs-reg 3 bootstrap-cells ADD
176 temp1 ds-reg -1 bootstrap-cells [+] MOV
177 temp2 ds-reg -2 bootstrap-cells [+] MOV
178 ds-reg 3 bootstrap-cells SUB
180 rs-reg -1 bootstrap-cells [+] temp1 MOV
181 rs-reg -2 bootstrap-cells [+] temp2 MOV ;
184 ds-reg bootstrap-cell ADD
186 rs-reg bootstrap-cell SUB
187 ds-reg [] temp0 MOV ;
190 ds-reg 2 bootstrap-cells ADD
192 temp1 rs-reg -1 bootstrap-cells [+] MOV
193 rs-reg 2 bootstrap-cells SUB
195 ds-reg -1 bootstrap-cells [+] temp1 MOV ;
198 ds-reg 3 bootstrap-cells ADD
200 temp1 rs-reg -1 bootstrap-cells [+] MOV
201 temp2 rs-reg -2 bootstrap-cells [+] MOV
202 rs-reg 3 bootstrap-cells SUB
204 ds-reg -1 bootstrap-cells [+] temp1 MOV
205 ds-reg -2 bootstrap-cells [+] temp2 MOV ;
209 0 CALL f rc-relative rel-word
215 0 CALL f rc-relative rel-word
217 ] jit-2dip jit-define
221 0 CALL f rc-relative rel-word
223 ] jit-3dip jit-define
229 ds-reg bootstrap-cell SUB
231 [ temp0 word-entry-point-offset [+] CALL ]
232 [ temp0 word-entry-point-offset [+] JMP ]
233 \ (execute) define-combinator-primitive
237 ds-reg bootstrap-cell SUB
238 temp0 word-entry-point-offset [+] JMP
239 ] jit-execute jit-define
242 stack-reg stack-frame-size bootstrap-cell - ADD
243 ] jit-epilog jit-define
245 [ 0 RET ] jit-return jit-define
247 ! ! ! Polymorphic inline caches
249 ! The PIC stubs are not permitted to touch pic-tail-reg.
251 ! Load a value from a stack position
253 temp1 ds-reg HEX: 7f [+] MOV f rc-absolute-1 rel-untagged
254 ] pic-load jit-define
256 [ temp1 tag-mask get AND ] pic-tag jit-define
260 temp1 tag-mask get AND
261 temp1 tuple type-number CMP
263 [ temp1 temp0 tuple-class-offset [+] MOV ]
265 ] pic-tuple jit-define
268 temp1 HEX: 7f CMP f rc-absolute-1 rel-untagged
269 ] pic-check-tag jit-define
271 [ 0 JE f rc-relative rel-word ] pic-hit jit-define
273 ! ! ! Megamorphic caches
278 temp1 tag-mask get AND
279 temp1 tag-bits get SHL
280 temp1 tuple type-number tag-fixnum CMP
282 [ temp1 temp0 tuple-class-offset [+] MOV ]
285 temp0 0 MOV f rc-absolute-cell rel-literal
286 ! key = hashcode(class)
288 bootstrap-cell 4 = [ temp2 1 SHR ] when
289 ! key &= cache.length - 1
290 temp2 mega-cache-size get 1 - bootstrap-cell * AND
291 ! cache += array-start-offset
292 temp0 array-start-offset ADD
295 ! if(get(cache) == class)
299 ! megamorphic_cache_hits++
300 temp1 0 MOV rc-absolute-cell rel-megamorphic-cache-hits
302 ! goto get(cache + bootstrap-cell)
303 temp0 temp0 bootstrap-cell [+] MOV
304 temp0 word-entry-point-offset [+] JMP
305 ! fall-through on miss
307 ] mega-lookup jit-define
316 temp0 tag-mask get AND
318 temp0 tag-bits get SHL
321 ] \ tag define-sub-primitive
326 ! adjust stack pointer
327 ds-reg bootstrap-cell SUB
330 ! turn slot number into offset
333 temp1 tag-bits get SHR
334 temp1 tag-bits get SHL
336 temp0 temp1 temp0 [+] MOV
339 ] \ slot define-sub-primitive
342 ! load string index from stack
343 temp0 ds-reg bootstrap-cell neg [+] MOV
344 temp0 tag-bits get SHR
345 ! load string from stack
348 temp0 8-bit-version-of temp0 temp1 string-offset [++] MOV
349 temp0 temp0 8-bit-version-of MOVZX
350 temp0 tag-bits get SHL
351 ! store character to stack
352 ds-reg bootstrap-cell SUB
354 ] \ string-nth-fast define-sub-primitive
358 ds-reg bootstrap-cell SUB
359 ] \ drop define-sub-primitive
362 ds-reg 2 bootstrap-cells SUB
363 ] \ 2drop define-sub-primitive
366 ds-reg 3 bootstrap-cells SUB
367 ] \ 3drop define-sub-primitive
371 ds-reg bootstrap-cell ADD
373 ] \ dup define-sub-primitive
377 temp1 ds-reg bootstrap-cell neg [+] MOV
378 ds-reg 2 bootstrap-cells ADD
380 ds-reg bootstrap-cell neg [+] temp1 MOV
381 ] \ 2dup define-sub-primitive
385 temp1 ds-reg -1 bootstrap-cells [+] MOV
386 temp3 ds-reg -2 bootstrap-cells [+] MOV
387 ds-reg 3 bootstrap-cells ADD
389 ds-reg -1 bootstrap-cells [+] temp1 MOV
390 ds-reg -2 bootstrap-cells [+] temp3 MOV
391 ] \ 3dup define-sub-primitive
395 ds-reg bootstrap-cell SUB
397 ] \ nip define-sub-primitive
401 ds-reg 2 bootstrap-cells SUB
403 ] \ 2nip define-sub-primitive
406 temp0 ds-reg -1 bootstrap-cells [+] MOV
407 ds-reg bootstrap-cell ADD
409 ] \ over define-sub-primitive
412 temp0 ds-reg -2 bootstrap-cells [+] MOV
413 ds-reg bootstrap-cell ADD
415 ] \ pick define-sub-primitive
419 temp1 ds-reg -1 bootstrap-cells [+] MOV
421 ds-reg bootstrap-cell ADD
423 ] \ dupd define-sub-primitive
427 temp1 ds-reg bootstrap-cell neg [+] MOV
428 ds-reg bootstrap-cell neg [+] temp0 MOV
430 ] \ swap define-sub-primitive
433 temp0 ds-reg -1 bootstrap-cells [+] MOV
434 temp1 ds-reg -2 bootstrap-cells [+] MOV
435 ds-reg -2 bootstrap-cells [+] temp0 MOV
436 ds-reg -1 bootstrap-cells [+] temp1 MOV
437 ] \ swapd define-sub-primitive
441 temp1 ds-reg -1 bootstrap-cells [+] MOV
442 temp3 ds-reg -2 bootstrap-cells [+] MOV
443 ds-reg -2 bootstrap-cells [+] temp1 MOV
444 ds-reg -1 bootstrap-cells [+] temp0 MOV
446 ] \ rot define-sub-primitive
450 temp1 ds-reg -1 bootstrap-cells [+] MOV
451 temp3 ds-reg -2 bootstrap-cells [+] MOV
452 ds-reg -2 bootstrap-cells [+] temp0 MOV
453 ds-reg -1 bootstrap-cells [+] temp3 MOV
455 ] \ -rot define-sub-primitive
457 [ jit->r ] \ load-local define-sub-primitive
460 : jit-compare ( insn -- )
462 temp3 0 MOV t rc-absolute-cell rel-literal
464 temp1 \ f type-number MOV
467 ! adjust stack pointer
468 ds-reg bootstrap-cell SUB
469 ! compare with second value
472 [ temp1 temp3 ] dip execute( dst src -- )
474 ds-reg [] temp1 MOV ;
476 : define-jit-compare ( insn word -- )
477 [ [ jit-compare ] curry ] dip define-sub-primitive ;
479 \ CMOVE \ eq? define-jit-compare
480 \ CMOVGE \ fixnum>= define-jit-compare
481 \ CMOVLE \ fixnum<= define-jit-compare
482 \ CMOVG \ fixnum> define-jit-compare
483 \ CMOVL \ fixnum< define-jit-compare
486 : jit-math ( insn -- )
490 ds-reg bootstrap-cell SUB
492 [ ds-reg [] temp0 ] dip execute( dst src -- ) ;
494 [ \ ADD jit-math ] \ fixnum+fast define-sub-primitive
496 [ \ SUB jit-math ] \ fixnum-fast define-sub-primitive
502 ds-reg bootstrap-cell SUB
506 temp0 tag-bits get SAR
511 ] \ fixnum*fast define-sub-primitive
513 [ \ AND jit-math ] \ fixnum-bitand define-sub-primitive
515 [ \ OR jit-math ] \ fixnum-bitor define-sub-primitive
517 [ \ XOR jit-math ] \ fixnum-bitxor define-sub-primitive
523 ds-reg [] tag-mask get XOR
524 ] \ fixnum-bitnot define-sub-primitive
528 shift-arg ds-reg [] MOV
530 shift-arg tag-bits get SAR
531 ! adjust stack pointer
532 ds-reg bootstrap-cell SUB
537 ! compute positive shift value in temp2
540 ! compute negative shift value in temp3
542 temp3 tag-mask get bitnot AND
544 ! if shift count was negative, move temp0 to temp2
548 ] \ fixnum-shift-fast define-sub-primitive
550 : jit-fixnum-/mod ( -- )
551 ! load second parameter
553 ! load first parameter
554 div-arg ds-reg bootstrap-cell neg [+] MOV
558 mod-arg bootstrap-cell-bits 1 - SAR
564 ! adjust stack pointer
565 ds-reg bootstrap-cell SUB
567 ds-reg [] mod-arg MOV
568 ] \ fixnum-mod define-sub-primitive
572 ! adjust stack pointer
573 ds-reg bootstrap-cell SUB
575 div-arg tag-bits get SHL
577 ds-reg [] div-arg MOV
578 ] \ fixnum/i-fast define-sub-primitive
583 div-arg tag-bits get SHL
585 ds-reg [] mod-arg MOV
586 ds-reg bootstrap-cell neg [+] div-arg MOV
587 ] \ fixnum/mod-fast define-sub-primitive
591 ds-reg bootstrap-cell SUB
593 temp0 tag-mask get TEST
594 temp0 \ f type-number MOV
595 temp1 1 tag-fixnum MOV
598 ] \ both-fixnums? define-sub-primitive
603 ! turn local number into offset
606 temp0 rs-reg temp0 [+] MOV
609 ] \ get-local define-sub-primitive
614 ! adjust stack pointer
615 ds-reg bootstrap-cell SUB
616 ! turn local number into offset
618 ! decrement retain stack pointer
620 ] \ drop-locals define-sub-primitive
622 [ "bootstrap.x86" forget-vocab ] with-compilation-unit