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authorMike Pall <mike>2010-08-27 16:52:45 +0200
committerMike Pall <mike>2010-08-27 16:52:45 +0200
commit96b60d5ef378c59181906dd50af61b2d3acf9c34 (patch)
tree7700ba31de15b772bbbfc5e92f6c82e4e2d0c5cc /src
parent877ff1e28eaf927a14c88c1f2dcdb0e05a88a008 (diff)
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PPC: Add skeleton for PowerPC interpreter.
Diffstat (limited to 'src')
-rw-r--r--src/buildvm_ppc.dasc850
1 files changed, 850 insertions, 0 deletions
diff --git a/src/buildvm_ppc.dasc b/src/buildvm_ppc.dasc
new file mode 100644
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1|// Low-level VM code for PowerPC CPUs.
2|// Bytecode interpreter, fast functions and helper functions.
3|// Copyright (C) 2005-2010 Mike Pall. See Copyright Notice in luajit.h
4|
5|.arch ppc
6|.section code_op, code_sub
7|
8|.actionlist build_actionlist
9|.globals GLOB_
10|.globalnames globnames
11|.externnames extnames
12|
13|.if not SPE
14|.error "No support for plain PowerPC CPUs (yet)"
15|.endif
16|
17|//-----------------------------------------------------------------------
18|
19|// Trap for not-yet-implemented parts.
20|.macro NYI; tw 4, sp, sp; .endmacro
21|
22|//-----------------------------------------------------------------------
23|
24|// Assumes DISPATCH is relative to GL.
25#define DISPATCH_GL(field) (GG_DISP2G + (int)offsetof(global_State, field))
26#define DISPATCH_J(field) (GG_DISP2J + (int)offsetof(jit_State, field))
27|
28#define PC2PROTO(field) ((int)offsetof(GCproto, field)-(int)sizeof(GCproto))
29|
30|.macro hotloop
31| NYI
32|.endmacro
33|
34|.macro hotcall
35| NYI
36|.endmacro
37|
38|//-----------------------------------------------------------------------
39
40/* Generate subroutines used by opcodes and other parts of the VM. */
41/* The .code_sub section should be last to help static branch prediction. */
42static void build_subroutines(BuildCtx *ctx)
43{
44 |.code_sub
45 |
46 |//-----------------------------------------------------------------------
47 |//-- Return handling ----------------------------------------------------
48 |//-----------------------------------------------------------------------
49 |
50 |->vm_returnp:
51 | NYI
52 |
53 |->vm_returnc:
54 | NYI
55 |
56 |->vm_return:
57 | NYI
58 |
59 |->vm_leave_cp:
60 | NYI
61 |
62 |->vm_leave_unw:
63 | NYI
64 |
65 |->vm_unwind_c: // Unwind C stack, return from vm_pcall.
66 | NYI
67 |->vm_unwind_c_eh: // Landing pad for external unwinder.
68 | NYI
69 |
70 |->vm_unwind_ff: // Unwind C stack, return from ff pcall.
71 | NYI
72 |->vm_unwind_ff_eh: // Landing pad for external unwinder.
73 | NYI
74 |
75 |//-----------------------------------------------------------------------
76 |//-- Grow stack for calls -----------------------------------------------
77 |//-----------------------------------------------------------------------
78 |
79 |->vm_growstack_c: // Grow stack for C function.
80 | NYI
81 |
82 |->vm_growstack_l: // Grow stack for Lua function.
83 | NYI
84 |
85 |//-----------------------------------------------------------------------
86 |//-- Entry points into the assembler VM ---------------------------------
87 |//-----------------------------------------------------------------------
88 |
89 |->vm_resume: // Setup C frame and resume thread.
90 | NYI
91 |
92 |->vm_pcall: // Setup protected C frame and enter VM.
93 | NYI
94 |
95 |->vm_call: // Setup C frame and enter VM.
96 | NYI
97 |
98 |->vm_call_dispatch:
99 | NYI
100 |
101 |->vm_call_dispatch_f:
102 | NYI
103 |
104 |->vm_cpcall: // Setup protected C frame, call C.
105 | NYI
106 |
107 |//-----------------------------------------------------------------------
108 |//-- Metamethod handling ------------------------------------------------
109 |//-----------------------------------------------------------------------
110 |
111 |//-- Continuation dispatch ----------------------------------------------
112 |
113 |->cont_dispatch:
114 | NYI
115 |
116 |->cont_cat:
117 | NYI
118 |
119 |//-- Table indexing metamethods -----------------------------------------
120 |
121 |->vmeta_tgets:
122 | NYI
123 |
124 |->vmeta_tgetb:
125 | NYI
126 |
127 |->vmeta_tgetv:
128 | NYI
129 |
130 |//-----------------------------------------------------------------------
131 |
132 |->vmeta_tsets:
133 | NYI
134 |
135 |->vmeta_tsetb:
136 | NYI
137 |
138 |->vmeta_tsetv:
139 | NYI
140 |
141 |//-- Comparison metamethods ---------------------------------------------
142 |
143 |->vmeta_comp:
144 | NYI
145 |->cont_nop:
146 | NYI
147 |
148 |->cont_ra:
149 | NYI
150 |
151 |->cont_condt:
152 | NYI
153 |
154 |->cont_condf:
155 | NYI
156 |
157 |->vmeta_equal:
158 | NYI
159 |
160 |//-- Arithmetic metamethods ---------------------------------------------
161 |
162 |->vmeta_arith_vn:
163 | NYI
164 |
165 |->vmeta_arith_nv:
166 | NYI
167 |
168 |->vmeta_unm:
169 | NYI
170 |
171 |->vmeta_arith_vv:
172 | NYI
173 |
174 |->vmeta_binop:
175 | NYI
176 |
177 |->vmeta_len:
178 | NYI
179 |
180 |//-- Call metamethod ----------------------------------------------------
181 |
182 |->vmeta_call_ra:
183 | NYI
184 |
185 |->vmeta_call: // Resolve and call __call metamethod.
186 | NYI
187 |
188 |//-- Argument coercion for 'for' statement ------------------------------
189 |
190 |->vmeta_for:
191 | NYI
192 |
193 |//-----------------------------------------------------------------------
194 |//-- Fast functions -----------------------------------------------------
195 |//-----------------------------------------------------------------------
196 |
197 |.macro .ffunc, name
198 |->ff_ .. name:
199 |.endmacro
200 |
201 |.macro .ffunc_1, name
202 |->ff_ .. name:
203 | NYI
204 |.endmacro
205 |
206 |.macro .ffunc_2, name
207 |->ff_ .. name:
208 | NYI
209 |.endmacro
210 |
211 |.macro .ffunc_n, name
212 | .ffunc_1 name
213 | NYI
214 |.endmacro
215 |
216 |.macro .ffunc_nn, name
217 | .ffunc_2 name
218 | NYI
219 |.endmacro
220 |
221 |.macro ffgccheck
222 | NYI
223 |.endmacro
224 |
225 |//-- Base library: checks -----------------------------------------------
226 |
227 |.ffunc assert
228 | NYI
229 |
230 |.ffunc type
231 | NYI
232 |
233 |//-- Base library: getters and setters ---------------------------------
234 |
235 |.ffunc_1 getmetatable
236 | NYI
237 |
238 |.ffunc_2 setmetatable
239 | NYI
240 |
241 |.ffunc_2 rawget
242 | NYI
243 |
244 |//-- Base library: conversions ------------------------------------------
245 |
246 |.ffunc tonumber
247 | NYI
248 |
249 |.ffunc_1 tostring
250 | NYI
251 |
252 |//-- Base library: iterators -------------------------------------------
253 |
254 |.ffunc_1 next
255 | NYI
256 |
257 |->fff_res2:
258 | NYI
259 |
260 |.ffunc_1 pairs
261 | NYI
262 |
263 |.ffunc_1 ipairs_aux
264 | NYI
265 |
266 |->fff_res0:
267 | NYI
268 |
269 |.ffunc_1 ipairs
270 | NYI
271 |
272 |//-- Base library: catch errors ----------------------------------------
273 |
274 |.ffunc_1 pcall
275 | NYI
276 |
277 |.ffunc_2 xpcall
278 | NYI
279 |
280 |//-- Coroutine library --------------------------------------------------
281 |
282 |.macro coroutine_resume_wrap, resume
283 |.if resume
284 |.ffunc_1 coroutine_resume
285 |.else
286 |.ffunc coroutine_wrap_aux
287 |.endif
288 | NYI
289 |.endmacro
290 |
291 | coroutine_resume_wrap 1 // coroutine.resume
292 | coroutine_resume_wrap 0 // coroutine.wrap
293 |
294 |.ffunc coroutine_yield
295 | NYI
296 |
297 |//-- Math library -------------------------------------------------------
298 |
299 |.ffunc_n math_abs
300 | NYI
301 | // Fallthrough.
302 |
303 |->fff_res1:
304 | NYI
305 |->fff_res:
306 | NYI
307 |
308 |.macro math_extern, func
309 | .ffunc math_ .. func
310 | NYI
311 |.endmacro
312 |
313 |.macro math_extern2, func
314 | .ffunc math_ .. func
315 | NYI
316 |.endmacro
317 |
318 | math_extern floor
319 | math_extern ceil
320 |
321 | math_extern sqrt
322 | math_extern log
323 | math_extern log10
324 | math_extern exp
325 | math_extern sin
326 | math_extern cos
327 | math_extern tan
328 | math_extern asin
329 | math_extern acos
330 | math_extern atan
331 | math_extern sinh
332 | math_extern cosh
333 | math_extern tanh
334 | math_extern2 atan2
335 | math_extern2 fmod
336 |
337 |->ff_math_deg:
338 |.ffunc_1 math_rad
339 | NYI
340 |
341 |.ffunc_nn math_ldexp; NYI
342 |.ffunc_n math_frexp; NYI
343 |.ffunc_n math_modf; NYI
344 |
345 |.ffunc_nn math_pow; NYI
346 |
347 |.macro math_minmax, name, cmpop
348 | .ffunc_1 name
349 | NYI
350 |.endmacro
351 |
352 | math_minmax math_min, efdtstlt
353 | math_minmax math_max, efdtstgt
354 |
355 |//-- String library -----------------------------------------------------
356 |
357 |.ffunc_1 string_len
358 | NYI
359 |
360 |.ffunc string_byte // Only handle the 1-arg case here.
361 | NYI
362 |
363 |.ffunc string_char // Only handle the 1-arg case here.
364 | NYI
365 |
366 |->fff_newstr:
367 | NYI
368 |
369 |.ffunc string_sub
370 | NYI
371 |
372 |->fff_emptystr: // Range underflow.
373 | NYI
374 |
375 |.ffunc_2 string_rep // Only handle the 1-char case inline.
376 | NYI
377 |
378 |.ffunc_1 string_reverse
379 | NYI
380 |
381 |.macro ffstring_case, name, lo, hi
382 | .ffunc_1 name
383 | NYI
384 |.endmacro
385 |
386 |ffstring_case string_lower, 0x41, 0x5a
387 |ffstring_case string_upper, 0x61, 0x7a
388 |
389 |//-- Table library ------------------------------------------------------
390 |
391 |.ffunc_1 table_getn
392 | NYI
393 |
394 |//-- Bit library --------------------------------------------------------
395 |
396 |.ffunc_n bit_tobit
397 | NYI
398 |
399 |.macro .ffunc_bit, name
400 | .ffunc_n name
401 | NYI
402 |.endmacro
403 |
404 |.macro .ffunc_bit_op, name, ins
405 | .ffunc_bit name
406 | NYI
407 |.endmacro
408 |
409 |.ffunc_bit_op bit_band, and
410 |.ffunc_bit_op bit_bor, or
411 |.ffunc_bit_op bit_bxor, xor
412 |
413 |.ffunc_bit bit_bswap
414 | NYI
415 |
416 |.ffunc_bit bit_bnot
417 | NYI
418 |
419 |->fff_resbit:
420 | NYI
421 |
422 |->fff_fallback_bit_op:
423 | NYI
424 |
425 |.macro .ffunc_bit_sh, name, ins
426 | .ffunc_nn name
427 | NYI
428 |.endmacro
429 |
430 |.ffunc_bit_sh bit_lshift, shl
431 |.ffunc_bit_sh bit_rshift, shr
432 |.ffunc_bit_sh bit_arshift, sar
433 |.ffunc_bit_sh bit_rol, rol
434 |.ffunc_bit_sh bit_ror, ror
435 |
436 |//-----------------------------------------------------------------------
437 |
438 |->fff_fallback: // Call fast function fallback handler.
439 | NYI
440 |
441 |->fff_gcstep: // Call GC step function.
442 | NYI
443 |
444 |//-----------------------------------------------------------------------
445 |//-- Special dispatch targets -------------------------------------------
446 |//-----------------------------------------------------------------------
447 |
448 |->vm_record: // Dispatch target for recording phase.
449#if LJ_HASJIT
450 | NYI
451#endif
452 |
453 |->vm_rethook: // Dispatch target for return hooks.
454 | NYI
455 |
456 |->vm_inshook: // Dispatch target for instr/line hooks.
457 | NYI
458 |
459 |->cont_hook: // Continue from hook yield.
460 | NYI
461 |
462 |->vm_hotloop: // Hot loop counter underflow.
463#if LJ_HASJIT
464 | NYI
465#endif
466 |
467 |->vm_callhook: // Dispatch target for call hooks.
468 | NYI
469 |
470 |->vm_hotcall: // Hot call counter underflow.
471#if LJ_HASJIT
472 | NYI
473#endif
474 |
475 |//-----------------------------------------------------------------------
476 |//-- Trace exit handler -------------------------------------------------
477 |//-----------------------------------------------------------------------
478 |
479 |->vm_exit_handler:
480#if LJ_HASJIT
481 | NYI
482#endif
483 |->vm_exit_interp:
484#if LJ_HASJIT
485 | NYI
486#endif
487 |
488 |//-----------------------------------------------------------------------
489 |//-- Math helper functions ----------------------------------------------
490 |//-----------------------------------------------------------------------
491 |
492 |// FP value rounding. Called by math.floor/math.ceil fast functions
493 |// and from JIT code.
494 |
495 |.macro vm_round, name, mode
496 |->name:
497 | NYI
498 |.endmacro
499 |
500 | vm_round vm_floor, 0
501 | vm_round vm_ceil, 1
502 | vm_round vm_trunc, 2
503 |
504 |->vm_mod:
505 | NYI
506 |
507 |->vm_exp:
508 | NYI
509 |->vm_exp2:
510 | NYI
511 |
512 |->vm_pow:
513 | NYI
514 |
515 |->vm_powi_sse:
516 | NYI
517 |
518 |->vm_foldfpm:
519 | NYI
520 |
521 |// Callable from C: double lj_vm_foldarith(double x, double y, int op)
522 |// Compute x op y for basic arithmetic operators (+ - * / % ^ and unary -)
523 |// and basic math functions. ORDER ARITH
524 |->vm_foldarith:
525 | NYI
526 |
527 |//-----------------------------------------------------------------------
528 |//-- Miscellaneous functions --------------------------------------------
529 |//-----------------------------------------------------------------------
530 |
531 |//-----------------------------------------------------------------------
532}
533
534/* Generate the code for a single instruction. */
535static void build_ins(BuildCtx *ctx, BCOp op, int defop)
536{
537 |=>defop:
538
539 switch (op) {
540
541 /* -- Comparison ops ---------------------------------------------------- */
542
543 /* Remember: all ops branch for a true comparison, fall through otherwise. */
544
545 case BC_ISLT: case BC_ISGE: case BC_ISLE: case BC_ISGT:
546 | NYI
547 break;
548
549 case BC_ISEQV: case BC_ISNEV:
550 | NYI
551 break;
552
553 case BC_ISEQS: case BC_ISNES:
554 | NYI
555 break;
556
557 case BC_ISEQN: case BC_ISNEN:
558 | NYI
559 break;
560
561 case BC_ISEQP: case BC_ISNEP:
562 | NYI
563 break;
564
565 /* -- Unary test and copy ops ------------------------------------------- */
566
567 case BC_ISTC: case BC_ISFC: case BC_IST: case BC_ISF:
568 | NYI
569 break;
570
571 /* -- Unary ops --------------------------------------------------------- */
572
573 case BC_MOV:
574 | NYI
575 break;
576 case BC_NOT:
577 | NYI
578 break;
579 case BC_UNM:
580 | NYI
581 break;
582 case BC_LEN:
583 | NYI
584 break;
585
586 /* -- Binary ops -------------------------------------------------------- */
587
588 case BC_ADDVN: case BC_ADDNV: case BC_ADDVV:
589 | NYI
590 break;
591 case BC_SUBVN: case BC_SUBNV: case BC_SUBVV:
592 | NYI
593 break;
594 case BC_MULVN: case BC_MULNV: case BC_MULVV:
595 | NYI
596 break;
597 case BC_DIVVN: case BC_DIVNV: case BC_DIVVV:
598 | NYI
599 break;
600 case BC_MODVN:
601 | NYI
602 break;
603 case BC_MODNV: case BC_MODVV:
604 | NYI
605 break;
606 case BC_POW:
607 | NYI
608 break;
609
610 case BC_CAT:
611 | NYI
612 break;
613
614 /* -- Constant ops ------------------------------------------------------ */
615
616 case BC_KSTR:
617 | NYI
618 break;
619 case BC_KSHORT:
620 | NYI
621 break;
622 case BC_KNUM:
623 | NYI
624 break;
625 case BC_KPRI:
626 | NYI
627 break;
628 case BC_KNIL:
629 | NYI
630 break;
631
632 /* -- Upvalue and function ops ------------------------------------------ */
633
634 case BC_UGET:
635 | NYI
636 break;
637 case BC_USETV:
638 | NYI
639 break;
640 case BC_USETS:
641 | NYI
642 break;
643 case BC_USETN:
644 | NYI
645 break;
646 case BC_USETP:
647 | NYI
648 break;
649 case BC_UCLO:
650 | NYI
651 break;
652
653 case BC_FNEW:
654 | NYI
655 break;
656
657 /* -- Table ops --------------------------------------------------------- */
658
659 case BC_TNEW:
660 | NYI
661 break;
662 case BC_TDUP:
663 | NYI
664 break;
665
666 case BC_GGET:
667 case BC_GSET:
668 | NYI
669 break;
670
671 case BC_TGETV:
672 | NYI
673 break;
674 case BC_TGETS:
675 | NYI
676 break;
677 case BC_TGETB:
678 | NYI
679 break;
680
681 case BC_TSETV:
682 | NYI
683 break;
684 case BC_TSETS:
685 | NYI
686 break;
687 case BC_TSETB:
688 | NYI
689 break;
690
691 case BC_TSETM:
692 | NYI
693 break;
694
695 /* -- Calls and vararg handling ----------------------------------------- */
696
697 case BC_CALLM:
698 | NYI
699 break;
700 case BC_CALL:
701 | NYI
702 break;
703
704 case BC_CALLMT:
705 | NYI
706 break;
707 case BC_CALLT:
708 | NYI
709 break;
710
711 case BC_ITERC:
712 | NYI
713 break;
714
715 case BC_VARG:
716 | NYI
717 break;
718
719 /* -- Returns ----------------------------------------------------------- */
720
721 case BC_RETM:
722 | NYI
723 break;
724
725 case BC_RET:
726 | NYI
727 break;
728
729 case BC_RET0: case BC_RET1:
730 | NYI
731 break;
732
733 /* -- Loops and branches ------------------------------------------------ */
734
735 case BC_FORL:
736#if LJ_HASJIT
737 | hotloop
738#endif
739 | // Fall through. Assumes BC_IFORL follows.
740 break;
741
742 case BC_JFORI:
743 case BC_JFORL:
744#if !LJ_HASJIT
745 break;
746#endif
747 case BC_FORI:
748 case BC_IFORL:
749 | NYI
750 break;
751
752 case BC_ITERL:
753#if LJ_HASJIT
754 | hotloop
755#endif
756 | // Fall through. Assumes BC_IITERL follows.
757 break;
758
759 case BC_JITERL:
760#if !LJ_HASJIT
761 break;
762#endif
763 case BC_IITERL:
764 | NYI
765 break;
766
767 case BC_LOOP:
768 | NYI
769#if LJ_HASJIT
770 | // Fall through. Assumes BC_ILOOP follows.
771#endif
772 break;
773
774 case BC_ILOOP:
775 | NYI
776 break;
777
778 case BC_JLOOP:
779 | NYI
780 break;
781
782 case BC_JMP:
783 | hotcall
784 break;
785
786 /* -- Function headers -------------------------------------------------- */
787
788 case BC_FUNCF:
789#if LJ_HASJIT
790 | hotcall
791#endif
792 case BC_FUNCV: /* NYI: compiled vararg functions. */
793 | // Fall through. Assumes BC_IFUNCF/BC_IFUNCV follow.
794 break;
795
796 case BC_JFUNCF:
797#if !LJ_HASJIT
798 break;
799#endif
800 case BC_IFUNCF:
801 | NYI
802 break;
803
804 case BC_JFUNCV:
805#if !LJ_HASJIT
806 break;
807#endif
808 | NYI // NYI: compiled vararg functions
809 break; /* NYI: compiled vararg functions. */
810
811 case BC_IFUNCV:
812 | NYI
813 break;
814
815 case BC_FUNCC:
816 case BC_FUNCCW:
817 | NYI
818 break;
819
820 /* ---------------------------------------------------------------------- */
821
822 default:
823 fprintf(stderr, "Error: undefined opcode BC_%s\n", bc_names[op]);
824 exit(2);
825 break;
826 }
827}
828
829static int build_backend(BuildCtx *ctx)
830{
831 int op;
832
833 dasm_growpc(Dst, BC__MAX);
834
835 build_subroutines(ctx);
836
837 |.code_op
838 for (op = 0; op < BC__MAX; op++)
839 build_ins(ctx, (BCOp)op, op);
840
841 return BC__MAX;
842}
843
844/* Emit pseudo frame-info for all assembler functions. */
845static void emit_asm_debug(BuildCtx *ctx)
846{
847 /* NYI */
848 UNUSED(ctx);
849}
850
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