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, need a
70 ! parameter here. See the comment in callback-return-rewind
72 HEX: ffff RET rc-absolute-2 rt-untagged jit-rel
73 ] callback-stub jit-define
77 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
78 ! Bump profiling counter
79 temp0 profile-count-offset [+] 1 tag-fixnum ADD
81 temp0 temp0 word-code-offset [+] MOV
82 ! Compute word entry point
83 temp0 compiled-header-size ADD
86 ] jit-profiling jit-define
90 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
91 ! increment datastack pointer
92 ds-reg bootstrap-cell ADD
93 ! store literal on datastack
98 0 CALL rc-relative rt-entry-point-pic jit-rel
99 ] jit-word-call jit-define
105 ds-reg bootstrap-cell SUB
106 ! compare boolean with f
107 temp0 \ f type-number CMP
108 ! jump to true branch if not equal
109 0 JNE rc-relative rt-entry-point jit-rel
110 ! jump to false branch if equal
111 0 JMP rc-relative rt-entry-point jit-rel
115 rs-reg bootstrap-cell ADD
117 ds-reg bootstrap-cell SUB
118 rs-reg [] temp0 MOV ;
121 rs-reg 2 bootstrap-cells ADD
123 temp1 ds-reg -1 bootstrap-cells [+] MOV
124 ds-reg 2 bootstrap-cells SUB
126 rs-reg -1 bootstrap-cells [+] temp1 MOV ;
129 rs-reg 3 bootstrap-cells ADD
131 temp1 ds-reg -1 bootstrap-cells [+] MOV
132 temp2 ds-reg -2 bootstrap-cells [+] MOV
133 ds-reg 3 bootstrap-cells SUB
135 rs-reg -1 bootstrap-cells [+] temp1 MOV
136 rs-reg -2 bootstrap-cells [+] temp2 MOV ;
139 ds-reg bootstrap-cell ADD
141 rs-reg bootstrap-cell SUB
142 ds-reg [] temp0 MOV ;
145 ds-reg 2 bootstrap-cells ADD
147 temp1 rs-reg -1 bootstrap-cells [+] MOV
148 rs-reg 2 bootstrap-cells SUB
150 ds-reg -1 bootstrap-cells [+] temp1 MOV ;
153 ds-reg 3 bootstrap-cells ADD
155 temp1 rs-reg -1 bootstrap-cells [+] MOV
156 temp2 rs-reg -2 bootstrap-cells [+] MOV
157 rs-reg 3 bootstrap-cells SUB
159 ds-reg -1 bootstrap-cells [+] temp1 MOV
160 ds-reg -2 bootstrap-cells [+] temp2 MOV ;
164 0 CALL rc-relative rt-entry-point jit-rel
170 0 CALL rc-relative rt-entry-point jit-rel
172 ] jit-2dip jit-define
176 0 CALL rc-relative rt-entry-point jit-rel
178 ] jit-3dip jit-define
184 ds-reg bootstrap-cell SUB
186 [ temp0 word-entry-point-offset [+] CALL ]
187 [ temp0 word-entry-point-offset [+] JMP ]
188 \ (execute) define-combinator-primitive
192 ds-reg bootstrap-cell SUB
193 temp0 word-entry-point-offset [+] JMP
194 ] jit-execute jit-define
197 stack-reg stack-frame-size bootstrap-cell - ADD
198 ] jit-epilog jit-define
200 [ 0 RET ] jit-return jit-define
202 ! ! ! Polymorphic inline caches
204 ! The PIC stubs are not permitted to touch pic-tail-reg.
206 ! Load a value from a stack position
208 temp1 ds-reg HEX: ffffffff [+] MOV rc-absolute rt-untagged jit-rel
209 ] pic-load jit-define
213 temp1 tag-mask get AND
214 temp1 tag-bits get SHL ;
216 [ load-tag ] pic-tag jit-define
218 ! The 'make' trick lets us compute the jump distance for the
219 ! conditional branches there
225 temp1 tuple type-number tag-fixnum CMP
227 [ temp1 temp0 tuple type-number neg bootstrap-cell + [+] MOV ]
229 ] pic-tuple jit-define
232 temp1 HEX: ffffffff CMP rc-absolute rt-literal jit-rel
233 ] pic-check-tag jit-define
236 temp2 HEX: ffffffff MOV rc-absolute-cell rt-literal jit-rel
238 ] pic-check-tuple jit-define
240 [ 0 JE rc-relative rt-entry-point jit-rel ] pic-hit jit-define
242 ! ! ! Megamorphic caches
246 temp0 0 MOV rc-absolute-cell rt-literal jit-rel
247 ! key = hashcode(class)
249 bootstrap-cell 4 = [ temp2 1 SHR ] when
250 ! key &= cache.length - 1
251 temp2 mega-cache-size get 1 - bootstrap-cell * AND
252 ! cache += array-start-offset
253 temp0 array-start-offset ADD
256 ! if(get(cache) == class)
258 bootstrap-cell 4 = 14 22 ? JNE ! Yuck!
259 ! megamorphic_cache_hits++
260 temp1 0 MOV rc-absolute-cell rt-megamorphic-cache-hits jit-rel
262 ! goto get(cache + bootstrap-cell)
263 temp0 temp0 bootstrap-cell [+] MOV
264 temp0 word-entry-point-offset [+] JMP
265 ! fall-through on miss
266 ] mega-lookup jit-define
275 temp0 tag-mask get AND
277 temp0 tag-bits get SHL
280 ] \ tag define-sub-primitive
285 ! adjust stack pointer
286 ds-reg bootstrap-cell SUB
289 ! turn slot number into offset
292 temp1 tag-bits get SHR
293 temp1 tag-bits get SHL
295 temp0 temp1 temp0 [+] MOV
298 ] \ slot define-sub-primitive
302 ds-reg bootstrap-cell SUB
303 ] \ drop define-sub-primitive
306 ds-reg 2 bootstrap-cells SUB
307 ] \ 2drop define-sub-primitive
310 ds-reg 3 bootstrap-cells SUB
311 ] \ 3drop define-sub-primitive
315 ds-reg bootstrap-cell ADD
317 ] \ dup define-sub-primitive
321 temp1 ds-reg bootstrap-cell neg [+] MOV
322 ds-reg 2 bootstrap-cells ADD
324 ds-reg bootstrap-cell neg [+] temp1 MOV
325 ] \ 2dup define-sub-primitive
329 temp1 ds-reg -1 bootstrap-cells [+] MOV
330 temp3 ds-reg -2 bootstrap-cells [+] MOV
331 ds-reg 3 bootstrap-cells ADD
333 ds-reg -1 bootstrap-cells [+] temp1 MOV
334 ds-reg -2 bootstrap-cells [+] temp3 MOV
335 ] \ 3dup define-sub-primitive
339 ds-reg bootstrap-cell SUB
341 ] \ nip define-sub-primitive
345 ds-reg 2 bootstrap-cells SUB
347 ] \ 2nip define-sub-primitive
350 temp0 ds-reg -1 bootstrap-cells [+] MOV
351 ds-reg bootstrap-cell ADD
353 ] \ over define-sub-primitive
356 temp0 ds-reg -2 bootstrap-cells [+] MOV
357 ds-reg bootstrap-cell ADD
359 ] \ pick define-sub-primitive
363 temp1 ds-reg -1 bootstrap-cells [+] MOV
365 ds-reg bootstrap-cell ADD
367 ] \ dupd define-sub-primitive
371 temp1 ds-reg bootstrap-cell neg [+] MOV
372 ds-reg bootstrap-cell neg [+] temp0 MOV
374 ] \ swap define-sub-primitive
377 temp0 ds-reg -1 bootstrap-cells [+] MOV
378 temp1 ds-reg -2 bootstrap-cells [+] MOV
379 ds-reg -2 bootstrap-cells [+] temp0 MOV
380 ds-reg -1 bootstrap-cells [+] temp1 MOV
381 ] \ swapd define-sub-primitive
385 temp1 ds-reg -1 bootstrap-cells [+] MOV
386 temp3 ds-reg -2 bootstrap-cells [+] MOV
387 ds-reg -2 bootstrap-cells [+] temp1 MOV
388 ds-reg -1 bootstrap-cells [+] temp0 MOV
390 ] \ rot define-sub-primitive
394 temp1 ds-reg -1 bootstrap-cells [+] MOV
395 temp3 ds-reg -2 bootstrap-cells [+] MOV
396 ds-reg -2 bootstrap-cells [+] temp0 MOV
397 ds-reg -1 bootstrap-cells [+] temp3 MOV
399 ] \ -rot define-sub-primitive
401 [ jit->r ] \ load-local define-sub-primitive
404 : jit-compare ( insn -- )
407 temp3 0 MOV rc-absolute-cell rt-literal jit-rel
409 temp1 \ f type-number MOV
412 ! adjust stack pointer
413 ds-reg bootstrap-cell SUB
414 ! compare with second value
417 [ temp1 temp3 ] dip execute( dst src -- )
419 ds-reg [] temp1 MOV ;
421 : define-jit-compare ( insn word -- )
422 [ [ jit-compare ] curry ] dip define-sub-primitive ;
424 \ CMOVE \ eq? define-jit-compare
425 \ CMOVGE \ fixnum>= define-jit-compare
426 \ CMOVLE \ fixnum<= define-jit-compare
427 \ CMOVG \ fixnum> define-jit-compare
428 \ CMOVL \ fixnum< define-jit-compare
431 : jit-math ( insn -- )
435 ds-reg bootstrap-cell SUB
437 [ ds-reg [] temp0 ] dip execute( dst src -- ) ;
439 [ \ ADD jit-math ] \ fixnum+fast define-sub-primitive
441 [ \ SUB jit-math ] \ fixnum-fast define-sub-primitive
447 ds-reg bootstrap-cell SUB
451 temp0 tag-bits get SAR
456 ] \ fixnum*fast define-sub-primitive
458 [ \ AND jit-math ] \ fixnum-bitand define-sub-primitive
460 [ \ OR jit-math ] \ fixnum-bitor define-sub-primitive
462 [ \ XOR jit-math ] \ fixnum-bitxor define-sub-primitive
468 ds-reg [] tag-mask get XOR
469 ] \ fixnum-bitnot define-sub-primitive
473 shift-arg ds-reg [] MOV
475 shift-arg tag-bits get SAR
476 ! adjust stack pointer
477 ds-reg bootstrap-cell SUB
482 ! compute positive shift value in temp2
485 ! compute negative shift value in temp3
487 temp3 tag-mask get bitnot AND
489 ! if shift count was negative, move temp0 to temp2
493 ] \ fixnum-shift-fast define-sub-primitive
495 : jit-fixnum-/mod ( -- )
496 ! load second parameter
498 ! load first parameter
499 div-arg ds-reg bootstrap-cell neg [+] MOV
503 mod-arg bootstrap-cell-bits 1 - SAR
509 ! adjust stack pointer
510 ds-reg bootstrap-cell SUB
512 ds-reg [] mod-arg MOV
513 ] \ fixnum-mod define-sub-primitive
517 ! adjust stack pointer
518 ds-reg bootstrap-cell SUB
520 div-arg tag-bits get SHL
522 ds-reg [] div-arg MOV
523 ] \ fixnum/i-fast define-sub-primitive
528 div-arg tag-bits get SHL
530 ds-reg [] mod-arg MOV
531 ds-reg bootstrap-cell neg [+] div-arg MOV
532 ] \ fixnum/mod-fast define-sub-primitive
536 ds-reg bootstrap-cell SUB
538 temp0 tag-mask get AND
539 temp0 \ f type-number MOV
540 temp1 1 tag-fixnum MOV
543 ] \ both-fixnums? define-sub-primitive
548 ! turn local number into offset
551 temp0 rs-reg temp0 [+] MOV
554 ] \ get-local define-sub-primitive
559 ! adjust stack pointer
560 ds-reg bootstrap-cell SUB
561 ! turn local number into offset
563 ! decrement retain stack pointer
565 ] \ drop-locals define-sub-primitive
567 [ "bootstrap.x86" forget-vocab ] with-compilation-unit