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 and leaf-signal-handler subprimitives are special-cased
106 ! in vm/quotations.cpp 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
115 ] \ signal-handler define-sub-primitive
117 : leaf-frame-size ( -- n ) 4 bootstrap-cells ;
120 jit-signal-handler-prolog :> frame-size
122 temp0 vm-reg vm-signal-handler-addr-offset [+] MOV
124 frame-size jit-signal-handler-epilog
125 ! Pop the fake leaf frame along with our return address
126 leaf-frame-size cell - RET
127 ] \ leaf-signal-handler define-sub-primitive
133 ds-reg bootstrap-cell SUB
134 ! compare boolean with f
135 temp0 \ f type-number CMP
136 ! jump to true branch if not equal
137 0 JNE f rc-relative rel-word
138 ! jump to false branch if equal
139 0 JMP f rc-relative rel-word
143 rs-reg bootstrap-cell ADD
145 ds-reg bootstrap-cell SUB
146 rs-reg [] temp0 MOV ;
149 rs-reg 2 bootstrap-cells ADD
151 temp1 ds-reg -1 bootstrap-cells [+] MOV
152 ds-reg 2 bootstrap-cells SUB
154 rs-reg -1 bootstrap-cells [+] temp1 MOV ;
157 rs-reg 3 bootstrap-cells ADD
159 temp1 ds-reg -1 bootstrap-cells [+] MOV
160 temp2 ds-reg -2 bootstrap-cells [+] MOV
161 ds-reg 3 bootstrap-cells SUB
163 rs-reg -1 bootstrap-cells [+] temp1 MOV
164 rs-reg -2 bootstrap-cells [+] temp2 MOV ;
167 ds-reg bootstrap-cell ADD
169 rs-reg bootstrap-cell SUB
170 ds-reg [] temp0 MOV ;
173 ds-reg 2 bootstrap-cells ADD
175 temp1 rs-reg -1 bootstrap-cells [+] MOV
176 rs-reg 2 bootstrap-cells SUB
178 ds-reg -1 bootstrap-cells [+] temp1 MOV ;
181 ds-reg 3 bootstrap-cells ADD
183 temp1 rs-reg -1 bootstrap-cells [+] MOV
184 temp2 rs-reg -2 bootstrap-cells [+] MOV
185 rs-reg 3 bootstrap-cells SUB
187 ds-reg -1 bootstrap-cells [+] temp1 MOV
188 ds-reg -2 bootstrap-cells [+] temp2 MOV ;
192 0 CALL f rc-relative rel-word
198 0 CALL f rc-relative rel-word
200 ] jit-2dip jit-define
204 0 CALL f rc-relative rel-word
206 ] jit-3dip jit-define
212 ds-reg bootstrap-cell SUB
214 [ temp0 word-entry-point-offset [+] CALL ]
215 [ temp0 word-entry-point-offset [+] JMP ]
216 \ (execute) define-combinator-primitive
220 ds-reg bootstrap-cell SUB
221 temp0 word-entry-point-offset [+] JMP
222 ] jit-execute jit-define
226 stack-reg stack-frame-size bootstrap-cell - ADD
227 ] jit-epilog jit-define
229 [ 0 RET ] jit-return jit-define
231 ! ! ! Polymorphic inline caches
233 ! The PIC stubs are not permitted to touch pic-tail-reg.
235 ! Load a value from a stack position
237 temp1 ds-reg HEX: 7f [+] MOV f rc-absolute-1 rel-untagged
238 ] pic-load jit-define
240 [ temp1 tag-mask get AND ] pic-tag jit-define
244 temp1 tag-mask get AND
245 temp1 tuple type-number CMP
247 [ temp1 temp0 tuple-class-offset [+] MOV ]
249 ] pic-tuple jit-define
252 temp1 HEX: 7f CMP f rc-absolute-1 rel-untagged
253 ] pic-check-tag jit-define
255 [ 0 JE f rc-relative rel-word ] pic-hit jit-define
257 ! ! ! Megamorphic caches
262 temp1 tag-mask get AND
263 temp1 tag-bits get SHL
264 temp1 tuple type-number tag-fixnum CMP
266 [ temp1 temp0 tuple-class-offset [+] MOV ]
269 temp0 0 MOV f rc-absolute-cell rel-literal
270 ! key = hashcode(class)
272 bootstrap-cell 4 = [ temp2 1 SHR ] when
273 ! key &= cache.length - 1
274 temp2 mega-cache-size get 1 - bootstrap-cell * AND
275 ! cache += array-start-offset
276 temp0 array-start-offset ADD
279 ! if(get(cache) == class)
283 ! megamorphic_cache_hits++
284 temp1 0 MOV rc-absolute-cell rel-megamorphic-cache-hits
286 ! goto get(cache + bootstrap-cell)
287 temp0 temp0 bootstrap-cell [+] MOV
288 temp0 word-entry-point-offset [+] JMP
289 ! fall-through on miss
291 ] mega-lookup jit-define
300 temp0 tag-mask get AND
302 temp0 tag-bits get SHL
305 ] \ tag define-sub-primitive
310 ! adjust stack pointer
311 ds-reg bootstrap-cell SUB
314 ! turn slot number into offset
317 temp1 tag-bits get SHR
318 temp1 tag-bits get SHL
320 temp0 temp1 temp0 [+] MOV
323 ] \ slot define-sub-primitive
326 ! load string index from stack
327 temp0 ds-reg bootstrap-cell neg [+] MOV
328 temp0 tag-bits get SHR
329 ! load string from stack
332 temp0 8-bit-version-of temp0 temp1 string-offset [++] MOV
333 temp0 temp0 8-bit-version-of MOVZX
334 temp0 tag-bits get SHL
335 ! store character to stack
336 ds-reg bootstrap-cell SUB
338 ] \ string-nth-fast define-sub-primitive
342 ds-reg bootstrap-cell SUB
343 ] \ drop define-sub-primitive
346 ds-reg 2 bootstrap-cells SUB
347 ] \ 2drop define-sub-primitive
350 ds-reg 3 bootstrap-cells SUB
351 ] \ 3drop define-sub-primitive
355 ds-reg bootstrap-cell ADD
357 ] \ dup define-sub-primitive
361 temp1 ds-reg bootstrap-cell neg [+] MOV
362 ds-reg 2 bootstrap-cells ADD
364 ds-reg bootstrap-cell neg [+] temp1 MOV
365 ] \ 2dup define-sub-primitive
369 temp1 ds-reg -1 bootstrap-cells [+] MOV
370 temp3 ds-reg -2 bootstrap-cells [+] MOV
371 ds-reg 3 bootstrap-cells ADD
373 ds-reg -1 bootstrap-cells [+] temp1 MOV
374 ds-reg -2 bootstrap-cells [+] temp3 MOV
375 ] \ 3dup define-sub-primitive
379 ds-reg bootstrap-cell SUB
381 ] \ nip define-sub-primitive
385 ds-reg 2 bootstrap-cells SUB
387 ] \ 2nip define-sub-primitive
390 temp0 ds-reg -1 bootstrap-cells [+] MOV
391 ds-reg bootstrap-cell ADD
393 ] \ over define-sub-primitive
396 temp0 ds-reg -2 bootstrap-cells [+] MOV
397 ds-reg bootstrap-cell ADD
399 ] \ pick define-sub-primitive
403 temp1 ds-reg -1 bootstrap-cells [+] MOV
405 ds-reg bootstrap-cell ADD
407 ] \ dupd define-sub-primitive
411 temp1 ds-reg bootstrap-cell neg [+] MOV
412 ds-reg bootstrap-cell neg [+] temp0 MOV
414 ] \ swap define-sub-primitive
417 temp0 ds-reg -1 bootstrap-cells [+] MOV
418 temp1 ds-reg -2 bootstrap-cells [+] MOV
419 ds-reg -2 bootstrap-cells [+] temp0 MOV
420 ds-reg -1 bootstrap-cells [+] temp1 MOV
421 ] \ swapd define-sub-primitive
425 temp1 ds-reg -1 bootstrap-cells [+] MOV
426 temp3 ds-reg -2 bootstrap-cells [+] MOV
427 ds-reg -2 bootstrap-cells [+] temp1 MOV
428 ds-reg -1 bootstrap-cells [+] temp0 MOV
430 ] \ rot define-sub-primitive
434 temp1 ds-reg -1 bootstrap-cells [+] MOV
435 temp3 ds-reg -2 bootstrap-cells [+] MOV
436 ds-reg -2 bootstrap-cells [+] temp0 MOV
437 ds-reg -1 bootstrap-cells [+] temp3 MOV
439 ] \ -rot define-sub-primitive
441 [ jit->r ] \ load-local define-sub-primitive
444 : jit-compare ( insn -- )
446 temp3 0 MOV t rc-absolute-cell rel-literal
448 temp1 \ f type-number MOV
451 ! adjust stack pointer
452 ds-reg bootstrap-cell SUB
453 ! compare with second value
456 [ temp1 temp3 ] dip execute( dst src -- )
458 ds-reg [] temp1 MOV ;
460 : define-jit-compare ( insn word -- )
461 [ [ jit-compare ] curry ] dip define-sub-primitive ;
463 \ CMOVE \ eq? define-jit-compare
464 \ CMOVGE \ fixnum>= define-jit-compare
465 \ CMOVLE \ fixnum<= define-jit-compare
466 \ CMOVG \ fixnum> define-jit-compare
467 \ CMOVL \ fixnum< define-jit-compare
470 : jit-math ( insn -- )
474 ds-reg bootstrap-cell SUB
476 [ ds-reg [] temp0 ] dip execute( dst src -- ) ;
478 [ \ ADD jit-math ] \ fixnum+fast define-sub-primitive
480 [ \ SUB jit-math ] \ fixnum-fast define-sub-primitive
486 ds-reg bootstrap-cell SUB
490 temp0 tag-bits get SAR
495 ] \ fixnum*fast define-sub-primitive
497 [ \ AND jit-math ] \ fixnum-bitand define-sub-primitive
499 [ \ OR jit-math ] \ fixnum-bitor define-sub-primitive
501 [ \ XOR jit-math ] \ fixnum-bitxor define-sub-primitive
507 ds-reg [] tag-mask get XOR
508 ] \ fixnum-bitnot define-sub-primitive
512 shift-arg ds-reg [] MOV
514 shift-arg tag-bits get SAR
515 ! adjust stack pointer
516 ds-reg bootstrap-cell SUB
521 ! compute positive shift value in temp2
524 ! compute negative shift value in temp3
526 temp3 tag-mask get bitnot AND
528 ! if shift count was negative, move temp0 to temp2
532 ] \ fixnum-shift-fast define-sub-primitive
534 : jit-fixnum-/mod ( -- )
535 ! load second parameter
537 ! load first parameter
538 div-arg ds-reg bootstrap-cell neg [+] MOV
542 mod-arg bootstrap-cell-bits 1 - SAR
548 ! adjust stack pointer
549 ds-reg bootstrap-cell SUB
551 ds-reg [] mod-arg MOV
552 ] \ fixnum-mod define-sub-primitive
556 ! adjust stack pointer
557 ds-reg bootstrap-cell SUB
559 div-arg tag-bits get SHL
561 ds-reg [] div-arg MOV
562 ] \ fixnum/i-fast define-sub-primitive
567 div-arg tag-bits get SHL
569 ds-reg [] mod-arg MOV
570 ds-reg bootstrap-cell neg [+] div-arg MOV
571 ] \ fixnum/mod-fast define-sub-primitive
575 ds-reg bootstrap-cell SUB
577 temp0 tag-mask get TEST
578 temp0 \ f type-number MOV
579 temp1 1 tag-fixnum MOV
582 ] \ both-fixnums? define-sub-primitive
587 ! turn local number into offset
590 temp0 rs-reg temp0 [+] MOV
593 ] \ get-local define-sub-primitive
598 ! adjust stack pointer
599 ds-reg bootstrap-cell SUB
600 ! turn local number into offset
602 ! decrement retain stack pointer
604 ] \ drop-locals define-sub-primitive
606 [ "bootstrap.x86" forget-vocab ] with-compilation-unit