1 /* src/vm/jit/powerpc/codegen.h - code generation macros and definitions for
4 Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
5 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
6 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
7 J. Wenninger, Institut f. Computersprachen - TU Wien
9 This file is part of CACAO.
11 This program is free software; you can redistribute it and/or
12 modify it under the terms of the GNU General Public License as
13 published by the Free Software Foundation; either version 2, or (at
14 your option) any later version.
16 This program is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
26 Contact: cacao@cacaojvm.org
28 Authors: Andreas Krall
31 Changes: Christian Thalinger
34 $Id: codegen.h 4369 2006-01-24 13:52:12Z twisti $
46 #include "vm/global.h"
47 #include "vm/jit/jit.h"
48 #include "vm/jit/reg.h"
51 /* additional functions and macros to generate code ***************************/
53 /* gen_nullptr_check(objreg) */
55 #define gen_nullptr_check(objreg) \
59 codegen_addxnullrefs(cd, mcodeptr); \
62 #define gen_bound_check \
64 M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));\
65 M_CMPU(s2, REG_ITMP3);\
67 codegen_addxboundrefs(cd, mcodeptr, s2); \
71 /* MCODECHECK(icnt) */
73 #define MCODECHECK(icnt) \
74 if ((mcodeptr + (icnt)) > cd->mcodeend) \
75 mcodeptr = codegen_increase(cd, (u1 *) mcodeptr)
79 generates an integer-move from register a to b.
80 if a and b are the same int-register, no code will be generated.
83 #define M_INTMOVE(a,b) \
90 #define M_LNGMOVE(a,b) \
92 M_INTMOVE(GET_LOW_REG(a), GET_LOW_REG(b)); \
93 M_INTMOVE(GET_HIGH_REG(a), GET_HIGH_REG(b)); \
96 #define M_TINTMOVE(t,a,b) \
97 if ((t) == TYPE_LNG) { \
99 M_INTMOVE(GET_LOW_REG((a)), GET_LOW_REG((b))); \
100 M_INTMOVE(GET_HIGH_REG((a)), GET_HIGH_REG((b))); \
102 M_INTMOVE(GET_LOW_REG((a)), GET_LOW_REG((b))); \
104 M_INTMOVE((a), (b)); \
109 generates a floating-point-move from register a to b.
110 if a and b are the same float-register, no code will be generated
113 #define M_FLTMOVE(a,b) \
122 this function generates code to fetch data from a pseudo-register
123 into a real register.
124 If the pseudo-register has actually been assigned to a real
125 register, no code will be emitted, since following operations
126 can use this register directly.
128 v: pseudoregister to be fetched from
129 tempregnum: temporary register to be used if v is actually spilled to ram
131 return: the register number, where the operand can be found after
132 fetching (this wil be either tempregnum or the register
133 number allready given to v)
136 #define var_to_reg_int(regnr,v,tempnr) \
138 if ((v)->flags & INMEMORY) { \
140 if (IS_2_WORD_TYPE((v)->type)) { \
141 M_ILD(GET_HIGH_REG((tempnr)), REG_SP, (v)->regoff * 4); \
142 M_ILD(GET_LOW_REG((tempnr)), REG_SP, (v)->regoff * 4 + 4); \
144 M_ILD((tempnr), REG_SP, (v)->regoff * 4); \
147 regnr = (v)->regoff; \
152 #define var_to_reg_lng(regnr,v,tempnr) \
154 if ((v)->flags & INMEMORY) { \
156 M_ILD(GET_HIGH_REG((tempnr)), REG_SP, (v)->regoff * 4); \
157 M_ILD(GET_LOW_REG((tempnr)), REG_SP, (v)->regoff * 4 + 4); \
160 regnr = (v)->regoff; \
165 /* fetch only the low part of v, regnr hast to be a single register */
167 #define var_to_reg_lng_low(regnr,v,tempnr) \
169 if ((v)->flags & INMEMORY) { \
171 M_ILD((tempnr), REG_SP, (v)->regoff * 4 + 4); \
174 regnr = GET_LOW_REG((v)->regoff); \
179 /* fetch only the high part of v, regnr hast to be a single register */
181 #define var_to_reg_lng_high(regnr,v,tempnr) \
183 if ((v)->flags & INMEMORY) { \
185 M_ILD((tempnr), REG_SP, (v)->regoff * 4); \
188 regnr = GET_HIGH_REG((v)->regoff); \
194 #define var_to_reg_flt(regnr,v,tempnr) \
196 if ((v)->flags & INMEMORY) { \
198 if ((v)->type == TYPE_DBL) \
199 M_DLD(tempnr, REG_SP, (v)->regoff * 4); \
201 M_FLD(tempnr, REG_SP, (v)->regoff * 4); \
204 regnr = (v)->regoff; \
209 /* store_reg_to_var_xxx ********************************************************
211 This function generates the code to store the result of an
212 operation back into a spilled pseudo-variable. If the
213 pseudo-variable has not been spilled in the first place, this
214 function will generate nothing.
216 v ............ Pseudovariable
217 tempregnum ... Number of the temporary registers as returned by
220 *******************************************************************************/
222 #define store_reg_to_var_int(sptr, tempregnum) \
224 if ((sptr)->flags & INMEMORY) { \
226 M_IST(tempregnum, REG_SP, (sptr)->regoff * 4); \
230 #define store_reg_to_var_lng(sptr, tempregnum) \
232 if ((sptr)->flags & INMEMORY) { \
234 M_IST(GET_HIGH_REG(tempregnum), REG_SP, (sptr)->regoff * 4); \
235 M_IST(GET_LOW_REG(tempregnum), REG_SP, (sptr)->regoff * 4 + 4); \
239 #define store_reg_to_var_adr(sptr, tempregnum) \
240 store_reg_to_var_int(sptr, tempregnum)
242 #define store_reg_to_var_flt(sptr, tempregnum) \
244 if ((sptr)->flags & INMEMORY) { \
246 M_FST(tempregnum, REG_SP, (sptr)->regoff * 4); \
250 #define store_reg_to_var_dbl(sptr, tempregnum) \
252 if ((sptr)->flags & INMEMORY) { \
254 M_DST(tempregnum, REG_SP, (sptr)->regoff * 4); \
259 #define ICONST(reg,c) \
260 if (((c) >= 0 && (c) <= 32767) || ((c) >= -32768 && (c) < 0)) {\
261 M_LDA((reg), REG_ZERO, (c)); \
263 a = dseg_adds4(cd, c); \
264 M_ILD((reg), REG_PV, a); \
267 #define LCONST(reg,c) \
268 ICONST(GET_HIGH_REG((reg)), (s4) ((s8) (c) >> 32)); \
269 ICONST(GET_LOW_REG((reg)), (s4) ((s8) (c)));
272 #define M_COPY(from,to) \
274 if (from->type == TYPE_LNG) \
275 d = reg_of_var(rd, to, PACK_REGS(REG_ITMP2, REG_ITMP1)); \
277 d = reg_of_var(rd, to, REG_IFTMP); \
278 if ((from->regoff != to->regoff) || \
279 ((from->flags ^ to->flags) & INMEMORY)) { \
280 if (IS_INT_LNG_TYPE(from->type)) { \
281 if (IS_2_WORD_TYPE(from->type)) { \
282 var_to_reg_lng(s1, from, d); \
284 store_reg_to_var_lng(to, d); \
286 var_to_reg_int(s1, from, d); \
288 store_reg_to_var_int(to, d); \
291 var_to_reg_flt(s1, from, d); \
293 store_reg_to_var_flt(to, d); \
299 #define ALIGNCODENOP \
300 if ((s4) ((ptrint) mcodeptr & 7)) { \
305 /* macros to create code ******************************************************/
307 #define M_OP3(opcode,y,oe,rc,d,a,b) \
308 *(mcodeptr++) = (((opcode) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((oe) << 10) | ((y) << 1) | (rc))
310 #define M_OP4(x,y,rc,d,a,b,c) \
311 *(mcodeptr++) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((c) << 6) | ((y) << 1) | (rc))
313 #define M_OP2_IMM(x,d,a,i) \
314 *(mcodeptr++) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((i) & 0xffff))
316 #define M_BRMASK 0x0000fffc /* (((1 << 16) - 1) & ~3) */
317 #define M_BRAMASK 0x03fffffc /* (((1 << 26) - 1) & ~3) */
319 #define M_BRA(x,i,a,l) \
320 *(mcodeptr++) = (((x) << 26) | ((((i) * 4) + 4) & M_BRAMASK) | ((a) << 1) | (l))
322 #define M_BRAC(x,bo,bi,i,a,l) \
323 *(mcodeptr++) = (((x) << 26) | ((bo) << 21) | ((bi) << 16) | (((i) * 4 + 4) & M_BRMASK) | ((a) << 1) | (l))
326 /* instruction macros *********************************************************/
328 #define M_IADD(a,b,c) M_OP3(31, 266, 0, 0, c, a, b)
329 #define M_IADD_IMM(a,b,c) M_OP2_IMM(14, c, a, b)
330 #define M_ADDC(a,b,c) M_OP3(31, 10, 0, 0, c, a, b)
331 #define M_ADDIC(a,b,c) M_OP2_IMM(12, c, a, b)
332 #define M_ADDICTST(a,b,c) M_OP2_IMM(13, c, a, b)
333 #define M_ADDE(a,b,c) M_OP3(31, 138, 0, 0, c, a, b)
334 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
335 #define M_ADDME(a,b) M_OP3(31, 234, 0, 0, b, a, 0)
336 #define M_ISUB(a,b,c) M_OP3(31, 40, 0, 0, c, b, a)
337 #define M_ISUBTST(a,b,c) M_OP3(31, 40, 0, 1, c, b, a)
338 #define M_SUBC(a,b,c) M_OP3(31, 8, 0, 0, c, b, a)
339 #define M_SUBIC(a,b,c) M_OP2_IMM(8, c, b, a)
340 #define M_SUBE(a,b,c) M_OP3(31, 136, 0, 0, c, b, a)
341 #define M_SUBZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
342 #define M_SUBME(a,b) M_OP3(31, 232, 0, 0, b, a, 0)
344 #define M_AND(a,b,c) M_OP3(31, 28, 0, 0, a, c, b)
345 #define M_AND_IMM(a,b,c) M_OP2_IMM(28, a, c, b)
346 #define M_ANDIS(a,b,c) M_OP2_IMM(29, a, c, b)
347 #define M_OR(a,b,c) M_OP3(31, 444, 0, 0, a, c, b)
348 #define M_OR_TST(a,b,c) M_OP3(31, 444, 0, 1, a, c, b)
349 #define M_OR_IMM(a,b,c) M_OP2_IMM(24, a, c, b)
350 #define M_ORIS(a,b,c) M_OP2_IMM(25, a, c, b)
351 #define M_XOR(a,b,c) M_OP3(31, 316, 0, 0, a, c, b)
352 #define M_XOR_IMM(a,b,c) M_OP2_IMM(26, a, c, b)
353 #define M_XORIS(a,b,c) M_OP2_IMM(27, a, c, b)
355 #define M_SLL(a,b,c) M_OP3(31, 24, 0, 0, a, c, b)
356 #define M_SRL(a,b,c) M_OP3(31, 536, 0, 0, a, c, b)
357 #define M_SRA(a,b,c) M_OP3(31, 792, 0, 0, a, c, b)
358 #define M_SRA_IMM(a,b,c) M_OP3(31, 824, 0, 0, a, c, b)
360 #define M_IMUL(a,b,c) M_OP3(31, 235, 0, 0, c, a, b)
361 #define M_IMUL_IMM(a,b,c) M_OP2_IMM(7, c, a, b)
362 #define M_IDIV(a,b,c) M_OP3(31, 491, 0, 0, c, a, b)
364 #define M_NEG(a,b) M_OP3(31, 104, 0, 0, b, a, 0)
365 #define M_NOT(a,b) M_OP3(31, 124, 0, 0, a, b, a)
367 #define M_SUBFIC(a,b,c) M_OP2_IMM(8, c, a, b)
368 #define M_SUBFZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
369 #define M_RLWINM(a,b,c,d,e) M_OP4(21, d, 0, a, e, b, c)
370 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
371 #define M_SLL_IMM(a,b,c) M_RLWINM(a,b,0,31-(b),c)
372 #define M_SRL_IMM(a,b,c) M_RLWINM(a,32-(b),b,31,c)
373 #define M_ADDIS(a,b,c) M_OP2_IMM(15, c, a, b)
374 #define M_STFIWX(a,b,c) M_OP3(31, 983, 0, 0, a, b, c)
375 #define M_LWZX(a,b,c) M_OP3(31, 23, 0, 0, a, b, c)
376 #define M_LHZX(a,b,c) M_OP3(31, 279, 0, 0, a, b, c)
377 #define M_LHAX(a,b,c) M_OP3(31, 343, 0, 0, a, b, c)
378 #define M_LBZX(a,b,c) M_OP3(31, 87, 0, 0, a, b, c)
379 #define M_LFSX(a,b,c) M_OP3(31, 535, 0, 0, a, b, c)
380 #define M_LFDX(a,b,c) M_OP3(31, 599, 0, 0, a, b, c)
381 #define M_STWX(a,b,c) M_OP3(31, 151, 0, 0, a, b, c)
382 #define M_STHX(a,b,c) M_OP3(31, 407, 0, 0, a, b, c)
383 #define M_STBX(a,b,c) M_OP3(31, 215, 0, 0, a, b, c)
384 #define M_STFSX(a,b,c) M_OP3(31, 663, 0, 0, a, b, c)
385 #define M_STFDX(a,b,c) M_OP3(31, 727, 0, 0, a, b, c)
387 #define M_STWU_INTERN(a,b,disp) M_OP2_IMM(37,a,b,disp)
389 #define M_STWU(a,b,disp) \
391 s4 lo = (disp) & 0x0000ffff; \
392 s4 hi = ((disp) >> 16); \
393 if (((disp) >= -32678) && ((disp) <= 32767)) { \
394 M_STWU_INTERN(a,b,lo); \
396 M_ADDIS(REG_ZERO,hi,REG_ITMP3); \
397 M_OR_IMM(REG_ITMP3,lo,REG_ITMP3); \
398 M_STWUX(REG_SP,REG_SP,REG_ITMP3); \
402 #define M_STWUX(a,b,c) M_OP3(31,183,0,0,a,b,c)
404 #define M_LDAH(a,b,c) M_ADDIS(b, c, a)
405 #define M_TRAP M_OP3(31, 4, 0, 0, 31, 0, 0)
407 #define M_NOP M_OR_IMM(0, 0, 0)
408 #define M_MOV(a,b) M_OR(a, a, b)
409 #define M_TST(a) M_OP3(31, 444, 0, 1, a, a, a)
411 #define M_DADD(a,b,c) M_OP3(63, 21, 0, 0, c, a, b)
412 #define M_FADD(a,b,c) M_OP3(59, 21, 0, 0, c, a, b)
413 #define M_DSUB(a,b,c) M_OP3(63, 20, 0, 0, c, a, b)
414 #define M_FSUB(a,b,c) M_OP3(59, 20, 0, 0, c, a, b)
415 #define M_DMUL(a,b,c) M_OP4(63, 25, 0, c, a, 0, b)
416 #define M_FMUL(a,b,c) M_OP4(59, 25, 0, c, a, 0, b)
417 #define M_DDIV(a,b,c) M_OP3(63, 18, 0, 0, c, a, b)
418 #define M_FDIV(a,b,c) M_OP3(59, 18, 0, 0, c, a, b)
420 #define M_FABS(a,b) M_OP3(63, 264, 0, 0, b, 0, a)
421 #define M_CVTDL(a,b) M_OP3(63, 14, 0, 0, b, 0, a)
422 #define M_CVTDL_C(a,b) M_OP3(63, 15, 0, 0, b, 0, a)
423 #define M_CVTDF(a,b) M_OP3(63, 12, 0, 0, b, 0, a)
424 #define M_FMOV(a,b) M_OP3(63, 72, 0, 0, b, 0, a)
425 #define M_FMOVN(a,b) M_OP3(63, 40, 0, 0, b, 0, a)
426 #define M_DSQRT(a,b) M_OP3(63, 22, 0, 0, b, 0, a)
427 #define M_FSQRT(a,b) M_OP3(59, 22, 0, 0, b, 0, a)
429 #define M_FCMPU(a,b) M_OP3(63, 0, 0, 0, 0, a, b)
430 #define M_FCMPO(a,b) M_OP3(63, 32, 0, 0, 0, a, b)
432 #define M_BLDU(a,b,c) M_OP2_IMM(34, a, b, c)
433 #define M_SLDU(a,b,c) M_OP2_IMM(40, a, b, c)
435 #define M_ILD_INTERN(a,b,disp) M_OP2_IMM(32,a,b,disp)
437 #define M_ILD(a,b,disp) \
439 s4 lo = (short) (disp); \
440 s4 hi = (short) (((disp) - lo) >> 16); \
442 M_ILD_INTERN(a,b,lo); \
445 M_ILD_INTERN(a,a,lo); \
449 #define M_ALD_INTERN(a,b,disp) M_ILD_INTERN(a,b,disp)
450 #define M_ALD(a,b,disp) M_ILD(a,b,disp)
452 #define M_BST(a,b,c) M_OP2_IMM(38, a, b, c)
453 #define M_SST(a,b,c) M_OP2_IMM(44, a, b, c)
455 #define M_IST_INTERN(a,b,disp) M_OP2_IMM(36,a,b,disp)
457 /* Stores with displacement overflow should only happen with PUTFIELD or on */
458 /* the stack. The PUTFIELD instruction does not use REG_ITMP3 and a */
459 /* reg_of_var call should not use REG_ITMP3!!! */
461 #define M_IST(a,b,disp) \
463 s4 lo = (short) (disp); \
464 s4 hi = (short) (((disp) - lo) >> 16); \
466 M_IST_INTERN(a,b,lo); \
468 M_ADDIS(b,hi,REG_ITMP3); \
469 M_IST_INTERN(a,REG_ITMP3,lo); \
473 #define M_AST_INTERN(a,b,disp) M_IST_INTERN(a,b,disp)
474 #define M_AST(a,b,disp) M_IST(a,b,disp)
476 #define M_BSEXT(a,b) M_OP3(31, 954, 0, 0, a, b, 0)
477 #define M_SSEXT(a,b) M_OP3(31, 922, 0, 0, a, b, 0)
478 #define M_CZEXT(a,b) M_RLWINM(a,0,16,31,b)
480 #define M_BR(a) M_BRA(18, a, 0, 0)
481 #define M_BL(a) M_BRA(18, a, 0, 1)
482 #define M_RET M_OP3(19, 16, 0, 0, 20, 0, 0)
483 #define M_JSR M_OP3(19, 528, 0, 1, 20, 0, 0)
484 #define M_RTS M_OP3(19, 528, 0, 0, 20, 0, 0)
486 #define M_CMP(a,b) M_OP3(31, 0, 0, 0, 0, a, b)
487 #define M_CMPU(a,b) M_OP3(31, 32, 0, 0, 0, a, b)
488 #define M_CMPI(a,b) M_OP2_IMM(11, 0, a, b)
489 #define M_CMPUI(a,b) M_OP2_IMM(10, 0, a, b)
491 #define M_BLT(a) M_BRAC(16, 12, 0, a, 0, 0)
492 #define M_BLE(a) M_BRAC(16, 4, 1, a, 0, 0)
493 #define M_BGT(a) M_BRAC(16, 12, 1, a, 0, 0)
494 #define M_BGE(a) M_BRAC(16, 4, 0, a, 0, 0)
495 #define M_BEQ(a) M_BRAC(16, 12, 2, a, 0, 0)
496 #define M_BNE(a) M_BRAC(16, 4, 2, a, 0, 0)
497 #define M_BNAN(a) M_BRAC(16, 12, 3, a, 0, 0)
499 #define M_FLD_INTERN(a,b,disp) M_OP2_IMM(48,a,b,disp)
500 #define M_DLD_INTERN(a,b,disp) M_OP2_IMM(50,a,b,disp)
502 #define M_FLD(a,b,disp) \
504 s4 lo = (short) (disp); \
505 s4 hi = (short) (((disp) - lo) >> 16); \
507 M_FLD_INTERN(a,b,lo); \
509 M_ADDIS(b,hi,REG_ITMP3); \
510 M_FLD_INTERN(a,REG_ITMP3,lo); \
514 #define M_DLD(a,b,disp) \
516 s4 lo = (short) (disp); \
517 s4 hi = (short) (((disp) - lo) >> 16); \
519 M_DLD_INTERN(a,b,lo); \
521 M_ADDIS(b,hi,REG_ITMP3); \
522 M_DLD_INTERN(a,REG_ITMP3,lo); \
526 #define M_FST_INTERN(a,b,disp) M_OP2_IMM(52,a,b,disp)
527 #define M_DST_INTERN(a,b,disp) M_OP2_IMM(54,a,b,disp)
529 #define M_FST(a,b,disp) \
531 s4 lo = (short) (disp); \
532 s4 hi = (short) (((disp) - lo) >> 16); \
534 M_FST_INTERN(a,b,lo); \
536 M_ADDIS(b,hi,REG_ITMP3); \
537 M_FST_INTERN(a,REG_ITMP3,lo); \
541 #define M_DST(a,b,disp) \
543 s4 lo = (short) (disp); \
544 s4 hi = (short) (((disp) - lo) >> 16); \
546 M_DST_INTERN(a,b,lo); \
548 M_ADDIS(b,hi,REG_ITMP3); \
549 M_DST_INTERN(a,REG_ITMP3,lo); \
553 #define M_MFLR(a) M_OP3(31, 339, 0, 0, a, 8, 0)
554 #define M_MFXER(a) M_OP3(31, 339, 0, 0, a, 1, 0)
555 #define M_MFCTR(a) M_OP3(31, 339, 0, 0, a, 9, 0)
556 #define M_MTLR(a) M_OP3(31, 467, 0, 0, a, 8, 0)
557 #define M_MTXER(a) M_OP3(31, 467, 0, 0, a, 1, 0)
558 #define M_MTCTR(a) M_OP3(31, 467, 0, 0, a, 9, 0)
560 #define M_LDA_INTERN(a,b,c) M_IADD_IMM(b, c, a)
562 #define M_LDA(a,b,disp) \
564 s4 lo = (short) (disp); \
565 s4 hi = (short) (((disp) - lo) >> 16); \
567 M_LDA_INTERN(a,b,lo); \
570 M_LDA_INTERN(a,a,lo); \
575 #define M_LDATST(a,b,c) M_ADDICTST(b, c, a)
576 #define M_CLR(a) M_IADD_IMM(0, 0, a)
577 #define M_AADD_IMM(a,b,c) M_IADD_IMM(a, b, c)
580 /* function gen_resolvebranch **************************************************
582 parameters: ip ... pointer to instruction after branch (void*)
583 so ... offset of instruction after branch (s4)
584 to ... offset of branch target (s4)
586 *******************************************************************************/
588 #define gen_resolvebranch(ip,so,to) \
589 *((s4*)(ip)-1)=(*((s4*)(ip)-1) & ~M_BRMASK) | (((s4)((to)-(so))+4)&((((*((s4*)(ip)-1)>>26)&63)==18)?M_BRAMASK:M_BRMASK))
592 /* function prototypes ********************************************************/
594 void docacheflush(u1 *p, long bytelen);
596 #endif /* _CODEGEN_H */
600 * These are local overrides for various environment variables in Emacs.
601 * Please do not remove this and leave it at the end of the file, where
602 * Emacs will automagically detect them.
603 * ---------------------------------------------------------------------
606 * indent-tabs-mode: t