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 x86-64, some arguments are passed in registers, and
16 ! so the only register that is safe for use here is nv-reg.
18 frame-reg stack-reg MOV
20 ! Save all non-volatile registers
26 vm-reg 0 MOV rc-absolute-cell rt-vm jit-rel
29 nv-reg vm-reg vm-context-offset [+] MOV
32 ! Switch over to the spare context
33 nv-reg vm-reg vm-spare-context-offset [+] MOV
34 vm-reg vm-context-offset [+] nv-reg MOV
36 ! Save C callstack pointer
37 nv-reg context-callstack-save-offset [+] stack-reg MOV
39 ! Load Factor callstack pointer
40 stack-reg nv-reg context-callstack-bottom-offset [+] MOV
45 ! Call into Factor code
46 nv-reg 0 MOV rc-absolute-cell rt-entry-point jit-rel
49 ! Load VM into vm-reg; only needed on x86-32, but doesn't
51 vm-reg 0 MOV rc-absolute-cell rt-vm jit-rel
53 ! Load C callstack pointer
54 nv-reg vm-reg vm-context-offset [+] MOV
55 stack-reg nv-reg context-callstack-save-offset [+] MOV
59 vm-reg vm-context-offset [+] nv-reg MOV
61 ! Restore non-volatile registers
64 nv-regs <reversed> [ POP ] each
68 ! Callbacks which return structs, or use stdcall, need a
69 ! parameter here. See the comment in callback-return-rewind
71 HEX: ffff RET rc-absolute-2 rt-untagged jit-rel
72 ] callback-stub jit-define
76 nv-reg 0 MOV rc-absolute-cell rt-literal jit-rel
77 ! Bump profiling counter
78 nv-reg profile-count-offset [+] 1 tag-fixnum ADD
80 nv-reg nv-reg word-code-offset [+] MOV
81 ! Compute word entry point
82 nv-reg compiled-header-size ADD
85 ] jit-profiling jit-define
89 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
90 ! increment datastack pointer
91 ds-reg bootstrap-cell ADD
92 ! store literal on datastack
97 0 CALL rc-relative rt-entry-point-pic jit-rel
98 ] jit-word-call jit-define
104 ds-reg bootstrap-cell SUB
105 ! compare boolean with f
106 temp0 \ f type-number CMP
107 ! jump to true branch if not equal
108 0 JNE rc-relative rt-entry-point jit-rel
109 ! jump to false branch if equal
110 0 JMP rc-relative rt-entry-point jit-rel
114 rs-reg bootstrap-cell ADD
116 ds-reg bootstrap-cell SUB
117 rs-reg [] temp0 MOV ;
120 rs-reg 2 bootstrap-cells ADD
122 temp1 ds-reg -1 bootstrap-cells [+] MOV
123 ds-reg 2 bootstrap-cells SUB
125 rs-reg -1 bootstrap-cells [+] temp1 MOV ;
128 rs-reg 3 bootstrap-cells ADD
130 temp1 ds-reg -1 bootstrap-cells [+] MOV
131 temp2 ds-reg -2 bootstrap-cells [+] MOV
132 ds-reg 3 bootstrap-cells SUB
134 rs-reg -1 bootstrap-cells [+] temp1 MOV
135 rs-reg -2 bootstrap-cells [+] temp2 MOV ;
138 ds-reg bootstrap-cell ADD
140 rs-reg bootstrap-cell SUB
141 ds-reg [] temp0 MOV ;
144 ds-reg 2 bootstrap-cells ADD
146 temp1 rs-reg -1 bootstrap-cells [+] MOV
147 rs-reg 2 bootstrap-cells SUB
149 ds-reg -1 bootstrap-cells [+] temp1 MOV ;
152 ds-reg 3 bootstrap-cells ADD
154 temp1 rs-reg -1 bootstrap-cells [+] MOV
155 temp2 rs-reg -2 bootstrap-cells [+] MOV
156 rs-reg 3 bootstrap-cells SUB
158 ds-reg -1 bootstrap-cells [+] temp1 MOV
159 ds-reg -2 bootstrap-cells [+] temp2 MOV ;
163 0 CALL rc-relative rt-entry-point jit-rel
169 0 CALL rc-relative rt-entry-point jit-rel
171 ] jit-2dip jit-define
175 0 CALL rc-relative rt-entry-point jit-rel
177 ] jit-3dip jit-define
183 ds-reg bootstrap-cell SUB
185 [ temp0 word-entry-point-offset [+] CALL ]
186 [ temp0 word-entry-point-offset [+] JMP ]
187 \ (execute) define-combinator-primitive
191 ds-reg bootstrap-cell SUB
192 temp0 word-entry-point-offset [+] JMP
193 ] jit-execute jit-define
196 stack-reg stack-frame-size bootstrap-cell - ADD
197 ] jit-epilog jit-define
199 [ 0 RET ] jit-return jit-define
201 ! ! ! Polymorphic inline caches
203 ! The PIC stubs are not permitted to touch temp3.
205 ! Load a value from a stack position
207 temp1 ds-reg HEX: ffffffff [+] MOV rc-absolute rt-untagged jit-rel
208 ] pic-load jit-define
212 temp1 tag-mask get AND
213 temp1 tag-bits get SHL ;
215 [ load-tag ] pic-tag jit-define
217 ! The 'make' trick lets us compute the jump distance for the
218 ! conditional branches there
224 temp1 tuple type-number tag-fixnum CMP
226 [ temp1 temp0 tuple type-number neg bootstrap-cell + [+] MOV ]
228 ] pic-tuple jit-define
231 temp1 HEX: ffffffff CMP rc-absolute rt-literal jit-rel
232 ] pic-check-tag jit-define
235 temp2 HEX: ffffffff MOV rc-absolute-cell rt-literal jit-rel
237 ] pic-check-tuple jit-define
239 [ 0 JE rc-relative rt-entry-point jit-rel ] pic-hit jit-define
241 ! ! ! Megamorphic caches
245 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
246 ! key = hashcode(class)
248 bootstrap-cell 4 = [ temp2 1 SHR ] when
249 ! key &= cache.length - 1
250 temp2 mega-cache-size get 1 - bootstrap-cell * AND
251 ! cache += array-start-offset
252 temp0 array-start-offset ADD
255 ! if(get(cache) == class)
257 bootstrap-cell 4 = 14 22 ? JNE ! Yuck!
258 ! megamorphic_cache_hits++
259 temp1 0 MOV rc-absolute-cell rt-megamorphic-cache-hits jit-rel
261 ! goto get(cache + bootstrap-cell)
262 temp0 temp0 bootstrap-cell [+] MOV
263 temp0 word-entry-point-offset [+] JMP
264 ! fall-through on miss
265 ] mega-lookup jit-define
274 temp0 tag-mask get AND
276 temp0 tag-bits get SHL
279 ] \ tag define-sub-primitive
284 ! adjust stack pointer
285 ds-reg bootstrap-cell SUB
288 ! turn slot number into offset
291 temp1 tag-bits get SHR
292 temp1 tag-bits get SHL
294 temp0 temp1 temp0 [+] MOV
297 ] \ slot define-sub-primitive
301 ds-reg bootstrap-cell SUB
302 ] \ drop define-sub-primitive
305 ds-reg 2 bootstrap-cells SUB
306 ] \ 2drop define-sub-primitive
309 ds-reg 3 bootstrap-cells SUB
310 ] \ 3drop define-sub-primitive
314 ds-reg bootstrap-cell ADD
316 ] \ dup define-sub-primitive
320 temp1 ds-reg bootstrap-cell neg [+] MOV
321 ds-reg 2 bootstrap-cells ADD
323 ds-reg bootstrap-cell neg [+] temp1 MOV
324 ] \ 2dup define-sub-primitive
328 temp1 ds-reg -1 bootstrap-cells [+] MOV
329 temp3 ds-reg -2 bootstrap-cells [+] MOV
330 ds-reg 3 bootstrap-cells ADD
332 ds-reg -1 bootstrap-cells [+] temp1 MOV
333 ds-reg -2 bootstrap-cells [+] temp3 MOV
334 ] \ 3dup define-sub-primitive
338 ds-reg bootstrap-cell SUB
340 ] \ nip define-sub-primitive
344 ds-reg 2 bootstrap-cells SUB
346 ] \ 2nip define-sub-primitive
349 temp0 ds-reg -1 bootstrap-cells [+] MOV
350 ds-reg bootstrap-cell ADD
352 ] \ over define-sub-primitive
355 temp0 ds-reg -2 bootstrap-cells [+] MOV
356 ds-reg bootstrap-cell ADD
358 ] \ pick define-sub-primitive
362 temp1 ds-reg -1 bootstrap-cells [+] MOV
364 ds-reg bootstrap-cell ADD
366 ] \ dupd define-sub-primitive
370 temp1 ds-reg bootstrap-cell neg [+] MOV
371 ds-reg bootstrap-cell neg [+] temp0 MOV
373 ] \ swap define-sub-primitive
376 temp0 ds-reg -1 bootstrap-cells [+] MOV
377 temp1 ds-reg -2 bootstrap-cells [+] MOV
378 ds-reg -2 bootstrap-cells [+] temp0 MOV
379 ds-reg -1 bootstrap-cells [+] temp1 MOV
380 ] \ swapd define-sub-primitive
384 temp1 ds-reg -1 bootstrap-cells [+] MOV
385 temp3 ds-reg -2 bootstrap-cells [+] MOV
386 ds-reg -2 bootstrap-cells [+] temp1 MOV
387 ds-reg -1 bootstrap-cells [+] temp0 MOV
389 ] \ rot define-sub-primitive
393 temp1 ds-reg -1 bootstrap-cells [+] MOV
394 temp3 ds-reg -2 bootstrap-cells [+] MOV
395 ds-reg -2 bootstrap-cells [+] temp0 MOV
396 ds-reg -1 bootstrap-cells [+] temp3 MOV
398 ] \ -rot define-sub-primitive
400 [ jit->r ] \ load-local define-sub-primitive
403 : jit-compare ( insn -- )
406 temp3 0 MOV rc-absolute-cell rt-literal jit-rel
408 temp1 \ f type-number MOV
411 ! adjust stack pointer
412 ds-reg bootstrap-cell SUB
413 ! compare with second value
416 [ temp1 temp3 ] dip execute( dst src -- )
418 ds-reg [] temp1 MOV ;
420 : define-jit-compare ( insn word -- )
421 [ [ jit-compare ] curry ] dip define-sub-primitive ;
423 \ CMOVE \ eq? define-jit-compare
424 \ CMOVGE \ fixnum>= define-jit-compare
425 \ CMOVLE \ fixnum<= define-jit-compare
426 \ CMOVG \ fixnum> define-jit-compare
427 \ CMOVL \ fixnum< define-jit-compare
430 : jit-math ( insn -- )
434 ds-reg bootstrap-cell SUB
436 [ ds-reg [] temp0 ] dip execute( dst src -- ) ;
438 [ \ ADD jit-math ] \ fixnum+fast define-sub-primitive
440 [ \ SUB jit-math ] \ fixnum-fast define-sub-primitive
446 ds-reg bootstrap-cell SUB
450 temp0 tag-bits get SAR
455 ] \ fixnum*fast define-sub-primitive
457 [ \ AND jit-math ] \ fixnum-bitand define-sub-primitive
459 [ \ OR jit-math ] \ fixnum-bitor define-sub-primitive
461 [ \ XOR jit-math ] \ fixnum-bitxor define-sub-primitive
467 ds-reg [] tag-mask get XOR
468 ] \ fixnum-bitnot define-sub-primitive
472 shift-arg ds-reg [] MOV
474 shift-arg tag-bits get SAR
475 ! adjust stack pointer
476 ds-reg bootstrap-cell SUB
481 ! compute positive shift value in temp1
484 ! compute negative shift value in temp3
486 temp3 tag-mask get bitnot AND
488 ! if shift count was negative, move temp0 to temp1
492 ] \ fixnum-shift-fast define-sub-primitive
494 : jit-fixnum-/mod ( -- )
495 ! load second parameter
497 ! load first parameter
498 div-arg ds-reg bootstrap-cell neg [+] MOV
502 mod-arg bootstrap-cell-bits 1 - SAR
508 ! adjust stack pointer
509 ds-reg bootstrap-cell SUB
511 ds-reg [] mod-arg MOV
512 ] \ fixnum-mod define-sub-primitive
516 ! adjust stack pointer
517 ds-reg bootstrap-cell SUB
519 div-arg tag-bits get SHL
521 ds-reg [] div-arg MOV
522 ] \ fixnum/i-fast define-sub-primitive
527 div-arg tag-bits get SHL
529 ds-reg [] mod-arg MOV
530 ds-reg bootstrap-cell neg [+] div-arg MOV
531 ] \ fixnum/mod-fast define-sub-primitive
535 ds-reg bootstrap-cell SUB
537 temp0 tag-mask get AND
538 temp0 \ f type-number MOV
539 temp1 1 tag-fixnum MOV
542 ] \ both-fixnums? define-sub-primitive
547 ! turn local number into offset
550 temp0 rs-reg temp0 [+] MOV
553 ] \ get-local define-sub-primitive
558 ! adjust stack pointer
559 ds-reg bootstrap-cell SUB
560 ! turn local number into offset
562 ! decrement retain stack pointer
564 ] \ drop-locals define-sub-primitive
566 [ "bootstrap.x86" forget-vocab ] with-compilation-unit