1 ! Copyright (C) 2007, 2010 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: bootstrap.image.private compiler.constants
4 compiler.units cpu.x86.assembler cpu.x86.assembler.operands
5 kernel kernel.private layouts locals.backend make math
6 math.private namespaces sequences slots.private vocabs ;
11 ! C to Factor entry point
13 ! Optimizing compiler's side of callback accesses
14 ! arguments that are on the stack via the frame pointer.
15 ! On x86-32 fastcall, and x86-64, some arguments are passed
16 ! in registers, and so the only registers that are safe for
17 ! use here are frame-reg, nv-reg and vm-reg.
19 frame-reg stack-reg MOV
21 ! Save all non-volatile registers
27 vm-reg 0 MOV rc-absolute-cell rt-vm jit-rel
30 nv-reg vm-reg vm-context-offset [+] MOV
33 ! Switch over to the spare context
34 nv-reg vm-reg vm-spare-context-offset [+] MOV
35 vm-reg vm-context-offset [+] nv-reg MOV
37 ! Save C callstack pointer
38 nv-reg context-callstack-save-offset [+] stack-reg MOV
40 ! Load Factor callstack pointer
41 stack-reg nv-reg context-callstack-bottom-offset [+] MOV
46 ! Call into Factor code
47 nv-reg 0 MOV rc-absolute-cell rt-entry-point jit-rel
50 ! Load VM into vm-reg; only needed on x86-32, but doesn't
52 vm-reg 0 MOV rc-absolute-cell rt-vm jit-rel
54 ! Load C callstack pointer
55 nv-reg vm-reg vm-context-offset [+] MOV
56 stack-reg nv-reg context-callstack-save-offset [+] MOV
60 vm-reg vm-context-offset [+] nv-reg MOV
62 ! Restore non-volatile registers
65 nv-regs <reversed> [ POP ] each
69 ! Callbacks which return structs, or use stdcall/fastcall/thiscall,
70 ! need a parameter here.
72 ! See the comment for M\ x86.32 stack-cleanup in cpu.x86.32
73 HEX: ffff RET rc-absolute-2 rt-untagged jit-rel
74 ] callback-stub jit-define
78 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
79 ! Bump profiling counter
80 temp0 profile-count-offset [+] 1 tag-fixnum ADD
82 temp0 temp0 word-code-offset [+] MOV
83 ! Compute word entry point
84 temp0 compiled-header-size ADD
87 ] jit-profiling jit-define
91 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
92 ! increment datastack pointer
93 ds-reg bootstrap-cell ADD
94 ! store literal on datastack
99 0 CALL rc-relative rt-entry-point-pic jit-rel
100 ] jit-word-call jit-define
106 ds-reg bootstrap-cell SUB
107 ! compare boolean with f
108 temp0 \ f type-number CMP
109 ! jump to true branch if not equal
110 0 JNE rc-relative rt-entry-point jit-rel
111 ! jump to false branch if equal
112 0 JMP rc-relative rt-entry-point jit-rel
116 rs-reg bootstrap-cell ADD
118 ds-reg bootstrap-cell SUB
119 rs-reg [] temp0 MOV ;
122 rs-reg 2 bootstrap-cells ADD
124 temp1 ds-reg -1 bootstrap-cells [+] MOV
125 ds-reg 2 bootstrap-cells SUB
127 rs-reg -1 bootstrap-cells [+] temp1 MOV ;
130 rs-reg 3 bootstrap-cells ADD
132 temp1 ds-reg -1 bootstrap-cells [+] MOV
133 temp2 ds-reg -2 bootstrap-cells [+] MOV
134 ds-reg 3 bootstrap-cells SUB
136 rs-reg -1 bootstrap-cells [+] temp1 MOV
137 rs-reg -2 bootstrap-cells [+] temp2 MOV ;
140 ds-reg bootstrap-cell ADD
142 rs-reg bootstrap-cell SUB
143 ds-reg [] temp0 MOV ;
146 ds-reg 2 bootstrap-cells ADD
148 temp1 rs-reg -1 bootstrap-cells [+] MOV
149 rs-reg 2 bootstrap-cells SUB
151 ds-reg -1 bootstrap-cells [+] temp1 MOV ;
154 ds-reg 3 bootstrap-cells ADD
156 temp1 rs-reg -1 bootstrap-cells [+] MOV
157 temp2 rs-reg -2 bootstrap-cells [+] MOV
158 rs-reg 3 bootstrap-cells SUB
160 ds-reg -1 bootstrap-cells [+] temp1 MOV
161 ds-reg -2 bootstrap-cells [+] temp2 MOV ;
165 0 CALL rc-relative rt-entry-point jit-rel
171 0 CALL rc-relative rt-entry-point jit-rel
173 ] jit-2dip jit-define
177 0 CALL rc-relative rt-entry-point jit-rel
179 ] jit-3dip jit-define
185 ds-reg bootstrap-cell SUB
187 [ temp0 word-entry-point-offset [+] CALL ]
188 [ temp0 word-entry-point-offset [+] JMP ]
189 \ (execute) define-combinator-primitive
193 ds-reg bootstrap-cell SUB
194 temp0 word-entry-point-offset [+] JMP
195 ] jit-execute jit-define
198 stack-reg stack-frame-size bootstrap-cell - ADD
199 ] jit-epilog jit-define
201 [ 0 RET ] jit-return jit-define
203 ! ! ! Polymorphic inline caches
205 ! The PIC stubs are not permitted to touch pic-tail-reg.
207 ! Load a value from a stack position
209 temp1 ds-reg HEX: 7f [+] MOV rc-absolute-1 rt-untagged jit-rel
210 ] pic-load jit-define
212 [ temp1 tag-mask get AND ] pic-tag jit-define
216 temp1 tag-mask get AND
217 temp1 tuple type-number CMP
219 [ temp1 temp0 tuple-class-offset [+] MOV ]
221 ] pic-tuple jit-define
224 temp1 HEX: 7f CMP rc-absolute-1 rt-untagged jit-rel
225 ] pic-check-tag jit-define
227 [ 0 JE rc-relative rt-entry-point jit-rel ] pic-hit jit-define
229 ! ! ! Megamorphic caches
234 temp1 tag-mask get AND
235 temp1 tag-bits get SHL
236 temp1 tuple type-number tag-fixnum CMP
238 [ temp1 temp0 tuple-class-offset [+] MOV ]
241 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
242 ! key = hashcode(class)
244 bootstrap-cell 4 = [ temp2 1 SHR ] when
245 ! key &= cache.length - 1
246 temp2 mega-cache-size get 1 - bootstrap-cell * AND
247 ! cache += array-start-offset
248 temp0 array-start-offset ADD
251 ! if(get(cache) == class)
255 ! megamorphic_cache_hits++
256 temp1 0 MOV rc-absolute-cell rt-megamorphic-cache-hits jit-rel
258 ! goto get(cache + bootstrap-cell)
259 temp0 temp0 bootstrap-cell [+] MOV
260 temp0 word-entry-point-offset [+] JMP
261 ! fall-through on miss
263 ] mega-lookup jit-define
272 temp0 tag-mask get AND
274 temp0 tag-bits get SHL
277 ] \ tag define-sub-primitive
282 ! adjust stack pointer
283 ds-reg bootstrap-cell SUB
286 ! turn slot number into offset
289 temp1 tag-bits get SHR
290 temp1 tag-bits get SHL
292 temp0 temp1 temp0 [+] MOV
295 ] \ slot define-sub-primitive
299 ds-reg bootstrap-cell SUB
300 ] \ drop define-sub-primitive
303 ds-reg 2 bootstrap-cells SUB
304 ] \ 2drop define-sub-primitive
307 ds-reg 3 bootstrap-cells SUB
308 ] \ 3drop define-sub-primitive
312 ds-reg bootstrap-cell ADD
314 ] \ dup define-sub-primitive
318 temp1 ds-reg bootstrap-cell neg [+] MOV
319 ds-reg 2 bootstrap-cells ADD
321 ds-reg bootstrap-cell neg [+] temp1 MOV
322 ] \ 2dup define-sub-primitive
326 temp1 ds-reg -1 bootstrap-cells [+] MOV
327 temp3 ds-reg -2 bootstrap-cells [+] MOV
328 ds-reg 3 bootstrap-cells ADD
330 ds-reg -1 bootstrap-cells [+] temp1 MOV
331 ds-reg -2 bootstrap-cells [+] temp3 MOV
332 ] \ 3dup define-sub-primitive
336 ds-reg bootstrap-cell SUB
338 ] \ nip define-sub-primitive
342 ds-reg 2 bootstrap-cells SUB
344 ] \ 2nip define-sub-primitive
347 temp0 ds-reg -1 bootstrap-cells [+] MOV
348 ds-reg bootstrap-cell ADD
350 ] \ over define-sub-primitive
353 temp0 ds-reg -2 bootstrap-cells [+] MOV
354 ds-reg bootstrap-cell ADD
356 ] \ pick define-sub-primitive
360 temp1 ds-reg -1 bootstrap-cells [+] MOV
362 ds-reg bootstrap-cell ADD
364 ] \ dupd define-sub-primitive
368 temp1 ds-reg bootstrap-cell neg [+] MOV
369 ds-reg bootstrap-cell neg [+] temp0 MOV
371 ] \ swap define-sub-primitive
374 temp0 ds-reg -1 bootstrap-cells [+] MOV
375 temp1 ds-reg -2 bootstrap-cells [+] MOV
376 ds-reg -2 bootstrap-cells [+] temp0 MOV
377 ds-reg -1 bootstrap-cells [+] temp1 MOV
378 ] \ swapd define-sub-primitive
382 temp1 ds-reg -1 bootstrap-cells [+] MOV
383 temp3 ds-reg -2 bootstrap-cells [+] MOV
384 ds-reg -2 bootstrap-cells [+] temp1 MOV
385 ds-reg -1 bootstrap-cells [+] temp0 MOV
387 ] \ rot define-sub-primitive
391 temp1 ds-reg -1 bootstrap-cells [+] MOV
392 temp3 ds-reg -2 bootstrap-cells [+] MOV
393 ds-reg -2 bootstrap-cells [+] temp0 MOV
394 ds-reg -1 bootstrap-cells [+] temp3 MOV
396 ] \ -rot define-sub-primitive
398 [ jit->r ] \ load-local define-sub-primitive
401 : jit-compare ( insn -- )
404 temp3 0 MOV rc-absolute-cell rt-literal jit-rel
406 temp1 \ f type-number MOV
409 ! adjust stack pointer
410 ds-reg bootstrap-cell SUB
411 ! compare with second value
414 [ temp1 temp3 ] dip execute( dst src -- )
416 ds-reg [] temp1 MOV ;
418 : define-jit-compare ( insn word -- )
419 [ [ jit-compare ] curry ] dip define-sub-primitive ;
421 \ CMOVE \ eq? define-jit-compare
422 \ CMOVGE \ fixnum>= define-jit-compare
423 \ CMOVLE \ fixnum<= define-jit-compare
424 \ CMOVG \ fixnum> define-jit-compare
425 \ CMOVL \ fixnum< define-jit-compare
428 : jit-math ( insn -- )
432 ds-reg bootstrap-cell SUB
434 [ ds-reg [] temp0 ] dip execute( dst src -- ) ;
436 [ \ ADD jit-math ] \ fixnum+fast define-sub-primitive
438 [ \ SUB jit-math ] \ fixnum-fast define-sub-primitive
444 ds-reg bootstrap-cell SUB
448 temp0 tag-bits get SAR
453 ] \ fixnum*fast define-sub-primitive
455 [ \ AND jit-math ] \ fixnum-bitand define-sub-primitive
457 [ \ OR jit-math ] \ fixnum-bitor define-sub-primitive
459 [ \ XOR jit-math ] \ fixnum-bitxor define-sub-primitive
465 ds-reg [] tag-mask get XOR
466 ] \ fixnum-bitnot define-sub-primitive
470 shift-arg ds-reg [] MOV
472 shift-arg tag-bits get SAR
473 ! adjust stack pointer
474 ds-reg bootstrap-cell SUB
479 ! compute positive shift value in temp2
482 ! compute negative shift value in temp3
484 temp3 tag-mask get bitnot AND
486 ! if shift count was negative, move temp0 to temp2
490 ] \ fixnum-shift-fast define-sub-primitive
492 : jit-fixnum-/mod ( -- )
493 ! load second parameter
495 ! load first parameter
496 div-arg ds-reg bootstrap-cell neg [+] MOV
500 mod-arg bootstrap-cell-bits 1 - SAR
506 ! adjust stack pointer
507 ds-reg bootstrap-cell SUB
509 ds-reg [] mod-arg MOV
510 ] \ fixnum-mod define-sub-primitive
514 ! adjust stack pointer
515 ds-reg bootstrap-cell SUB
517 div-arg tag-bits get SHL
519 ds-reg [] div-arg MOV
520 ] \ fixnum/i-fast define-sub-primitive
525 div-arg tag-bits get SHL
527 ds-reg [] mod-arg MOV
528 ds-reg bootstrap-cell neg [+] div-arg MOV
529 ] \ fixnum/mod-fast define-sub-primitive
533 ds-reg bootstrap-cell SUB
535 temp0 tag-mask get AND
536 temp0 \ f type-number MOV
537 temp1 1 tag-fixnum MOV
540 ] \ both-fixnums? define-sub-primitive
545 ! turn local number into offset
548 temp0 rs-reg temp0 [+] MOV
551 ] \ get-local define-sub-primitive
556 ! adjust stack pointer
557 ds-reg bootstrap-cell SUB
558 ! turn local number into offset
560 ! decrement retain stack pointer
562 ] \ drop-locals define-sub-primitive
564 [ "bootstrap.x86" forget-vocab ] with-compilation-unit