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
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
130 jit-signal-handler-prolog :> frame-size
131 temp0 vm-reg vm-signal-handler-addr-offset [+] MOV
133 frame-size jit-signal-handler-epilog
135 ] \ ffi-signal-handler define-sub-primitive
138 jit-signal-handler-prolog :> frame-size
139 temp0 vm-reg vm-signal-handler-addr-offset [+] MOV
141 frame-size jit-signal-handler-epilog
142 red-zone-size 16 bootstrap-cell - + RET
143 ] \ ffi-leaf-signal-handler define-sub-primitive
149 ds-reg bootstrap-cell SUB
150 ! compare boolean with f
151 temp0 \ f type-number CMP
152 ! jump to true branch if not equal
153 0 JNE f rc-relative rel-word
154 ! jump to false branch if equal
155 0 JMP f rc-relative rel-word
159 rs-reg bootstrap-cell ADD
161 ds-reg bootstrap-cell SUB
162 rs-reg [] temp0 MOV ;
165 rs-reg 2 bootstrap-cells ADD
167 temp1 ds-reg -1 bootstrap-cells [+] MOV
168 ds-reg 2 bootstrap-cells SUB
170 rs-reg -1 bootstrap-cells [+] temp1 MOV ;
173 rs-reg 3 bootstrap-cells ADD
175 temp1 ds-reg -1 bootstrap-cells [+] MOV
176 temp2 ds-reg -2 bootstrap-cells [+] MOV
177 ds-reg 3 bootstrap-cells SUB
179 rs-reg -1 bootstrap-cells [+] temp1 MOV
180 rs-reg -2 bootstrap-cells [+] temp2 MOV ;
183 ds-reg bootstrap-cell ADD
185 rs-reg bootstrap-cell SUB
186 ds-reg [] temp0 MOV ;
189 ds-reg 2 bootstrap-cells ADD
191 temp1 rs-reg -1 bootstrap-cells [+] MOV
192 rs-reg 2 bootstrap-cells SUB
194 ds-reg -1 bootstrap-cells [+] temp1 MOV ;
197 ds-reg 3 bootstrap-cells ADD
199 temp1 rs-reg -1 bootstrap-cells [+] MOV
200 temp2 rs-reg -2 bootstrap-cells [+] MOV
201 rs-reg 3 bootstrap-cells SUB
203 ds-reg -1 bootstrap-cells [+] temp1 MOV
204 ds-reg -2 bootstrap-cells [+] temp2 MOV ;
208 0 CALL f rc-relative rel-word
214 0 CALL f rc-relative rel-word
216 ] jit-2dip jit-define
220 0 CALL f rc-relative rel-word
222 ] jit-3dip jit-define
228 ds-reg bootstrap-cell SUB
230 [ temp0 word-entry-point-offset [+] CALL ]
231 [ temp0 word-entry-point-offset [+] JMP ]
232 \ (execute) define-combinator-primitive
236 ds-reg bootstrap-cell SUB
237 temp0 word-entry-point-offset [+] JMP
238 ] jit-execute jit-define
241 stack-reg stack-frame-size bootstrap-cell - ADD
242 ] jit-epilog jit-define
244 [ 0 RET ] jit-return jit-define
246 ! ! ! Polymorphic inline caches
248 ! The PIC stubs are not permitted to touch pic-tail-reg.
250 ! Load a value from a stack position
252 temp1 ds-reg HEX: 7f [+] MOV f rc-absolute-1 rel-untagged
253 ] pic-load jit-define
255 [ temp1 tag-mask get AND ] pic-tag jit-define
259 temp1 tag-mask get AND
260 temp1 tuple type-number CMP
262 [ temp1 temp0 tuple-class-offset [+] MOV ]
264 ] pic-tuple jit-define
267 temp1 HEX: 7f CMP f rc-absolute-1 rel-untagged
268 ] pic-check-tag jit-define
270 [ 0 JE f rc-relative rel-word ] pic-hit jit-define
272 ! ! ! Megamorphic caches
277 temp1 tag-mask get AND
278 temp1 tag-bits get SHL
279 temp1 tuple type-number tag-fixnum CMP
281 [ temp1 temp0 tuple-class-offset [+] MOV ]
284 temp0 0 MOV f rc-absolute-cell rel-literal
285 ! key = hashcode(class)
287 bootstrap-cell 4 = [ temp2 1 SHR ] when
288 ! key &= cache.length - 1
289 temp2 mega-cache-size get 1 - bootstrap-cell * AND
290 ! cache += array-start-offset
291 temp0 array-start-offset ADD
294 ! if(get(cache) == class)
298 ! megamorphic_cache_hits++
299 temp1 0 MOV rc-absolute-cell rel-megamorphic-cache-hits
301 ! goto get(cache + bootstrap-cell)
302 temp0 temp0 bootstrap-cell [+] MOV
303 temp0 word-entry-point-offset [+] JMP
304 ! fall-through on miss
306 ] mega-lookup jit-define
315 temp0 tag-mask get AND
317 temp0 tag-bits get SHL
320 ] \ tag define-sub-primitive
325 ! adjust stack pointer
326 ds-reg bootstrap-cell SUB
329 ! turn slot number into offset
332 temp1 tag-bits get SHR
333 temp1 tag-bits get SHL
335 temp0 temp1 temp0 [+] MOV
338 ] \ slot define-sub-primitive
341 ! load string index from stack
342 temp0 ds-reg bootstrap-cell neg [+] MOV
343 temp0 tag-bits get SHR
344 ! load string from stack
347 temp0 8-bit-version-of temp0 temp1 string-offset [++] MOV
348 temp0 temp0 8-bit-version-of MOVZX
349 temp0 tag-bits get SHL
350 ! store character to stack
351 ds-reg bootstrap-cell SUB
353 ] \ string-nth-fast define-sub-primitive
357 ds-reg bootstrap-cell SUB
358 ] \ drop define-sub-primitive
361 ds-reg 2 bootstrap-cells SUB
362 ] \ 2drop define-sub-primitive
365 ds-reg 3 bootstrap-cells SUB
366 ] \ 3drop define-sub-primitive
370 ds-reg bootstrap-cell ADD
372 ] \ dup define-sub-primitive
376 temp1 ds-reg bootstrap-cell neg [+] MOV
377 ds-reg 2 bootstrap-cells ADD
379 ds-reg bootstrap-cell neg [+] temp1 MOV
380 ] \ 2dup define-sub-primitive
384 temp1 ds-reg -1 bootstrap-cells [+] MOV
385 temp3 ds-reg -2 bootstrap-cells [+] MOV
386 ds-reg 3 bootstrap-cells ADD
388 ds-reg -1 bootstrap-cells [+] temp1 MOV
389 ds-reg -2 bootstrap-cells [+] temp3 MOV
390 ] \ 3dup define-sub-primitive
394 ds-reg bootstrap-cell SUB
396 ] \ nip define-sub-primitive
400 ds-reg 2 bootstrap-cells SUB
402 ] \ 2nip define-sub-primitive
405 temp0 ds-reg -1 bootstrap-cells [+] MOV
406 ds-reg bootstrap-cell ADD
408 ] \ over define-sub-primitive
411 temp0 ds-reg -2 bootstrap-cells [+] MOV
412 ds-reg bootstrap-cell ADD
414 ] \ pick define-sub-primitive
418 temp1 ds-reg -1 bootstrap-cells [+] MOV
420 ds-reg bootstrap-cell ADD
422 ] \ dupd define-sub-primitive
426 temp1 ds-reg bootstrap-cell neg [+] MOV
427 ds-reg bootstrap-cell neg [+] temp0 MOV
429 ] \ swap define-sub-primitive
432 temp0 ds-reg -1 bootstrap-cells [+] MOV
433 temp1 ds-reg -2 bootstrap-cells [+] MOV
434 ds-reg -2 bootstrap-cells [+] temp0 MOV
435 ds-reg -1 bootstrap-cells [+] temp1 MOV
436 ] \ swapd define-sub-primitive
440 temp1 ds-reg -1 bootstrap-cells [+] MOV
441 temp3 ds-reg -2 bootstrap-cells [+] MOV
442 ds-reg -2 bootstrap-cells [+] temp1 MOV
443 ds-reg -1 bootstrap-cells [+] temp0 MOV
445 ] \ rot define-sub-primitive
449 temp1 ds-reg -1 bootstrap-cells [+] MOV
450 temp3 ds-reg -2 bootstrap-cells [+] MOV
451 ds-reg -2 bootstrap-cells [+] temp0 MOV
452 ds-reg -1 bootstrap-cells [+] temp3 MOV
454 ] \ -rot define-sub-primitive
456 [ jit->r ] \ load-local define-sub-primitive
459 : jit-compare ( insn -- )
461 temp3 0 MOV t rc-absolute-cell rel-literal
463 temp1 \ f type-number MOV
466 ! adjust stack pointer
467 ds-reg bootstrap-cell SUB
468 ! compare with second value
471 [ temp1 temp3 ] dip execute( dst src -- )
473 ds-reg [] temp1 MOV ;
475 : define-jit-compare ( insn word -- )
476 [ [ jit-compare ] curry ] dip define-sub-primitive ;
478 \ CMOVE \ eq? define-jit-compare
479 \ CMOVGE \ fixnum>= define-jit-compare
480 \ CMOVLE \ fixnum<= define-jit-compare
481 \ CMOVG \ fixnum> define-jit-compare
482 \ CMOVL \ fixnum< define-jit-compare
485 : jit-math ( insn -- )
489 ds-reg bootstrap-cell SUB
491 [ ds-reg [] temp0 ] dip execute( dst src -- ) ;
493 [ \ ADD jit-math ] \ fixnum+fast define-sub-primitive
495 [ \ SUB jit-math ] \ fixnum-fast define-sub-primitive
501 ds-reg bootstrap-cell SUB
505 temp0 tag-bits get SAR
510 ] \ fixnum*fast define-sub-primitive
512 [ \ AND jit-math ] \ fixnum-bitand define-sub-primitive
514 [ \ OR jit-math ] \ fixnum-bitor define-sub-primitive
516 [ \ XOR jit-math ] \ fixnum-bitxor define-sub-primitive
522 ds-reg [] tag-mask get XOR
523 ] \ fixnum-bitnot define-sub-primitive
527 shift-arg ds-reg [] MOV
529 shift-arg tag-bits get SAR
530 ! adjust stack pointer
531 ds-reg bootstrap-cell SUB
536 ! compute positive shift value in temp2
539 ! compute negative shift value in temp3
541 temp3 tag-mask get bitnot AND
543 ! if shift count was negative, move temp0 to temp2
547 ] \ fixnum-shift-fast define-sub-primitive
549 : jit-fixnum-/mod ( -- )
550 ! load second parameter
552 ! load first parameter
553 div-arg ds-reg bootstrap-cell neg [+] MOV
557 mod-arg bootstrap-cell-bits 1 - SAR
563 ! adjust stack pointer
564 ds-reg bootstrap-cell SUB
566 ds-reg [] mod-arg MOV
567 ] \ fixnum-mod define-sub-primitive
571 ! adjust stack pointer
572 ds-reg bootstrap-cell SUB
574 div-arg tag-bits get SHL
576 ds-reg [] div-arg MOV
577 ] \ fixnum/i-fast define-sub-primitive
582 div-arg tag-bits get SHL
584 ds-reg [] mod-arg MOV
585 ds-reg bootstrap-cell neg [+] div-arg MOV
586 ] \ fixnum/mod-fast define-sub-primitive
590 ds-reg bootstrap-cell SUB
592 temp0 tag-mask get TEST
593 temp0 \ f type-number MOV
594 temp1 1 tag-fixnum MOV
597 ] \ both-fixnums? define-sub-primitive
602 ! turn local number into offset
605 temp0 rs-reg temp0 [+] MOV
608 ] \ get-local define-sub-primitive
613 ! adjust stack pointer
614 ds-reg bootstrap-cell SUB
615 ! turn local number into offset
617 ! decrement retain stack pointer
619 ] \ drop-locals define-sub-primitive
621 [ "bootstrap.x86" forget-vocab ] with-compilation-unit