1 /* src/vm/jit/powerpc/codegen.h - code generation macros and definitions for
4 Copyright (C) 1996-2005, 2006, 2007, 2008
5 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
7 This file is part of CACAO.
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU General Public License as
11 published by the Free Software Foundation; either version 2, or (at
12 your option) any later version.
14 This program is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
34 #include "vm/global.h"
35 #include "vm/jit/jit.h"
36 #include "vm/jit/reg.h"
39 /* additional functions and macros to generate code ***************************/
41 /* MCODECHECK(icnt) */
43 #define MCODECHECK(icnt) \
45 if ((cd->mcodeptr + (icnt) * 4) > cd->mcodeend) \
46 codegen_increase(cd); \
51 generates an integer-move from register a to b.
52 if a and b are the same int-register, no code will be generated.
55 #define M_INTMOVE(a,b) \
62 #define M_LNGMOVE(a,b) \
64 if (GET_HIGH_REG(a) == GET_LOW_REG(b)) { \
65 assert((GET_LOW_REG(a) != GET_HIGH_REG(b))); \
66 M_INTMOVE(GET_HIGH_REG(a), GET_HIGH_REG(b)); \
67 M_INTMOVE(GET_LOW_REG(a), GET_LOW_REG(b)); \
69 M_INTMOVE(GET_LOW_REG(a), GET_LOW_REG(b)); \
70 M_INTMOVE(GET_HIGH_REG(a), GET_HIGH_REG(b)); \
76 generates a floating-point-move from register a to b.
77 if a and b are the same float-register, no code will be generated
80 #define M_FLTMOVE(a,b) \
88 #define ICONST(d,c) emit_iconst(cd, (d), (c))
90 #define LCONST(reg,c) \
91 ICONST(GET_HIGH_REG((reg)), (s4) ((s8) (c) >> 32)); \
92 ICONST(GET_LOW_REG((reg)), (s4) ((s8) (c)));
95 #define ALIGNCODENOP \
96 if ((s4) ((ptrint) cd->mcodeptr & 7)) { \
101 /* branch defines *************************************************************/
103 #define BRANCH_NOPS \
105 if (CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) { \
115 /* patcher defines ************************************************************/
117 #define PATCHER_CALL_SIZE 1 * 4 /* an instruction is 4-bytes long */
119 #define PATCHER_NOPS \
125 /* macros to create code ******************************************************/
127 #define M_OP3(opcode,y,oe,rc,d,a,b) \
129 *((u4 *) cd->mcodeptr) = (((opcode) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((oe) << 10) | ((y) << 1) | (rc)); \
133 #define M_OP3_GET_A(x) (((x) >> 16) & 0x1f )
134 #define M_OP3_GET_B(x) (((x) >> 11) & 0x1f )
137 #define M_OP4(x,y,rc,d,a,b,c) \
139 *((u4 *) cd->mcodeptr) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((c) << 6) | ((y) << 1) | (rc)); \
144 #define M_OP2_IMM(x,d,a,i) \
146 *((u4 *) cd->mcodeptr) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((i) & 0xffff)); \
150 #define M_INSTR_OP2_IMM_D(x) (((x) >> 21) & 0x1f )
151 #define M_INSTR_OP2_IMM_A(x) (((x) >> 16) & 0x1f )
152 #define M_INSTR_OP2_IMM_I(x) ( (x) & 0xffff)
155 #define M_BMASK 0x03fffffc /* (((1 << 26) - 1) & ~3) */
156 #define M_BCMASK 0x0000fffc /* (((1 << 16) - 1) & ~3) */
158 #define M_B(LI,AA,LK) \
160 *((u4 *) cd->mcodeptr) = ((18 << 26) | ((((LI) * 4) + 4) & M_BMASK) | ((AA) << 1) | (LK)); \
164 #define M_BC(BO,BI,BD,AA,LK) \
166 *((u4 *) cd->mcodeptr) = ((16 << 26) | ((BO) << 21) | ((BI) << 16) | ((((BD) * 4) + 4) & M_BCMASK) | ((AA) << 1) | (LK)); \
171 /* machine instruction macros **************************************************
175 machine instruction macro:
176 Same order as for the mnemonic (d, s1, s2).
179 Same order as in the instruction encoding.
181 *******************************************************************************/
183 #define MI_and(rA,rS,rB) M_OP3(31, 28, 0, 0, rS, rA, rB)
184 #define MI_anddot(rA,rS,rB) M_OP3(31, 28, 0, 1, rS, rA, rB)
185 #define MI_andi(rA,rS,UIMM) M_OP2_IMM(28, rS, rA, UIMM)
186 #define MI_lwarx(rD,rA,rB) M_OP3(31, 20, 0, 0, rD, rA, rB)
187 #define MI_or(rA,rS,rB) M_OP3(31, 444, 0, 0, rS, rA, rB)
188 #define MI_ordot(rA,rS,rB) M_OP3(31, 444, 0, 1, rS, rA, rB)
189 #define MI_ori(rA,rS,UIMM) M_OP2_IMM(24, rS, rA, UIMM)
190 #define MI_stwcxdot(rS,rA,rB) M_OP3(31, 150, 0, 1, rS, rA, rB)
191 #define MI_subf(rD,rA,rB) M_OP3(31, 40, 0, 0, rD, rA, rB)
192 #define MI_subfdot(rD,rA,rB) M_OP3(31, 40, 0, 1, rD, rA, rB)
193 #define MI_sync M_OP3(31, 598, 0, 0, 0, 0, 0)
196 /* HIR macros ******************************************************************
201 Default usage in CACAO (s1, s2, d).
203 machine instruction macro:
204 Same order as for the mnemonic (d, s1, s2).
206 *******************************************************************************/
208 /* integer instructions *******************************************************/
210 #define M_IAND(a,b,d) MI_and(d, a, b)
211 #define M_IAND_IMM(a,b,d) MI_andi(d, a, b)
212 #define M_IOR(a,b,d) MI_or(d, a, b)
213 #define M_IOR_IMM(a,b,d) MI_ori(d, a, b)
214 #define M_IOR_TST(a,b,d) MI_ordot(d, a, b)
215 #define M_ISUB(a,b,d) MI_subf(d, b, a)
216 #define M_ISUB_TST(a,b,d) MI_subfdot(d, b, a)
217 #define M_MOV(a,d) MI_or(d, a, a)
218 #define M_NOP MI_ori(0, 0, 0)
221 #define M_ADDC(a,b,c) M_OP3(31, 10, 0, 0, c, a, b)
222 #define M_ADDE(a,b,c) M_OP3(31, 138, 0, 0, c, a, b)
223 #define M_ADDIC(a,b,c) M_OP2_IMM(12, c, a, b)
224 #define M_ADDICTST(a,b,c) M_OP2_IMM(13, c, a, b)
225 #define M_ADDIS(a,b,c) M_OP2_IMM(15, c, a, b)
226 #define M_ADDME(a,b) M_OP3(31, 234, 0, 0, b, a, 0)
227 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
228 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
229 #define M_ANDIS(a,b,c) M_OP2_IMM(29, a, c, b)
230 #define M_BEQ(a) M_BC(12, 2, a, 0, 0)
231 #define M_BGE(a) M_BC(4, 0, a, 0, 0)
232 #define M_BGT(a) M_BC(12, 1, a, 0, 0)
233 #define M_BL(a) M_B(a, 0, 1)
234 #define M_BLDU(a,b,c) M_OP2_IMM(34, a, b, c)
235 #define M_BLE(a) M_BC(4, 1, a, 0, 0)
236 #define M_BLT(a) M_BC(12, 0, a, 0, 0)
237 #define M_BNAN(a) M_BC(12, 3, a, 0, 0)
238 #define M_BNE(a) M_BC(4, 2, a, 0, 0)
239 #define M_BR(a) M_B(a, 0, 0)
240 #define M_BSEXT(a,b) M_OP3(31, 954, 0, 0, a, b, 0)
241 #define M_BST(a,b,c) M_OP2_IMM(38, a, b, c)
242 #define M_CMP(a,b) M_OP3(31, 0, 0, 0, 0, a, b)
243 #define M_CMPI(a,b) M_OP2_IMM(11, 0, a, b)
244 #define M_CMPU(a,b) M_OP3(31, 32, 0, 0, 0, a, b)
245 #define M_CMPUI(a,b) M_OP2_IMM(10, 0, a, b)
246 #define M_CZEXT(a,b) M_RLWINM(a,0,16,31,b)
247 #define M_IADD(a,b,c) M_OP3(31, 266, 0, 0, c, a, b)
248 #define M_IADD_IMM(a,b,c) M_OP2_IMM(14, c, a, b)
249 #define M_IDIV(a,b,c) M_OP3(31, 491, 0, 0, c, a, b)
250 #define M_IMUL(a,b,c) M_OP3(31, 235, 0, 0, c, a, b)
251 #define M_IMUL_IMM(a,b,c) M_OP2_IMM(7, c, a, b)
252 #define M_JSR M_OP3(19, 528, 0, 1, 20, 0, 0)
253 #define M_LBZX(a,b,c) M_OP3(31, 87, 0, 0, a, b, c)
254 #define M_LHAX(a,b,c) M_OP3(31, 343, 0, 0, a, b, c)
255 #define M_LHZX(a,b,c) M_OP3(31, 279, 0, 0, a, b, c)
256 #define M_LWZX(a,b,c) M_OP3(31, 23, 0, 0, a, b, c)
257 #define M_MFCTR(a) M_OP3(31, 339, 0, 0, a, 9, 0)
258 #define M_MFLR(a) M_OP3(31, 339, 0, 0, a, 8, 0)
259 #define M_MFXER(a) M_OP3(31, 339, 0, 0, a, 1, 0)
260 #define M_MTCTR(a) M_OP3(31, 467, 0, 0, a, 9, 0)
261 #define M_MTLR(a) M_OP3(31, 467, 0, 0, a, 8, 0)
262 #define M_MTXER(a) M_OP3(31, 467, 0, 0, a, 1, 0)
263 #define M_NEG(a,b) M_OP3(31, 104, 0, 0, b, a, 0)
264 #define M_NOT(a,b) M_OP3(31, 124, 0, 0, a, b, a)
265 #define M_ORIS(a,b,c) M_OP2_IMM(25, a, c, b)
266 #define M_RET M_OP3(19, 16, 0, 0, 20, 0, 0)
267 #define M_RLWINM(a,b,c,d,e) M_OP4(21, d, 0, a, e, b, c)
268 #define M_RTS M_OP3(19, 528, 0, 0, 20, 0, 0)
269 #define M_SLDU(a,b,c) M_OP2_IMM(40, a, b, c)
270 #define M_SLL(a,b,c) M_OP3(31, 24, 0, 0, a, c, b)
271 #define M_SLL_IMM(a,b,c) M_RLWINM(a,b,0,31-(b),c)
272 #define M_SRA(a,b,c) M_OP3(31, 792, 0, 0, a, c, b)
273 #define M_SRA_IMM(a,b,c) M_OP3(31, 824, 0, 0, a, c, b)
274 #define M_SRL(a,b,c) M_OP3(31, 536, 0, 0, a, c, b)
275 #define M_SRL_IMM(a,b,c) M_RLWINM(a,32-(b),b,31,c)
276 #define M_SSEXT(a,b) M_OP3(31, 922, 0, 0, a, b, 0)
277 #define M_SST(a,b,c) M_OP2_IMM(44, a, b, c)
278 #define M_STBX(a,b,c) M_OP3(31, 215, 0, 0, a, b, c)
279 #define M_STHX(a,b,c) M_OP3(31, 407, 0, 0, a, b, c)
280 #define M_STWUX(a,b,c) M_OP3(31,183,0,0,a,b,c)
281 #define M_STWX(a,b,c) M_OP3(31, 151, 0, 0, a, b, c)
282 #define M_SUBC(a,b,c) M_OP3(31, 8, 0, 0, c, b, a)
283 #define M_SUBE(a,b,c) M_OP3(31, 136, 0, 0, c, b, a)
284 #define M_SUBFIC(a,b,c) M_OP2_IMM(8, c, a, b)
285 #define M_SUBFZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
286 #define M_SUBIC(a,b,c) M_OP2_IMM(8, c, b, a)
287 #define M_SUBME(a,b) M_OP3(31, 232, 0, 0, b, a, 0)
288 #define M_SUBZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
289 #define M_TRAP M_OP3(31, 4, 0, 0, 31, 0, 0)
290 #define M_TRAPGEU(a,b) M_OP3(31, 4, 0, 0, 5, a, b)
291 #define M_TST(a) M_OP3(31, 444, 0, 1, a, a, a)
292 #define M_XOR(a,b,c) M_OP3(31, 316, 0, 0, a, c, b)
293 #define M_XORIS(a,b,c) M_OP2_IMM(27, a, c, b)
294 #define M_XOR_IMM(a,b,c) M_OP2_IMM(26, a, c, b)
297 #define M_LDAH(a,b,c) M_ADDIS(b, c, a)
298 #define M_LDATST(a,b,c) M_ADDICTST(b, c, a)
299 #define M_CLR(a) M_IADD_IMM(0, 0, a)
302 #define M_ILD_INTERN(a,b,disp) M_OP2_IMM(32,a,b,disp)
304 #define M_ILD(a,b,disp) \
306 s4 lo = (short) (disp); \
307 s4 hi = (short) (((disp) - lo) >> 16); \
309 M_ILD_INTERN(a,b,lo); \
312 M_ILD_INTERN(a,a,lo); \
316 #define M_LLD_INTERN(a,b,disp) \
318 M_ILD_INTERN(GET_HIGH_REG(a), b, disp); \
319 M_ILD_INTERN(GET_LOW_REG(a), b, disp + 4); \
322 #define M_LLD(a,b,disp) \
324 s4 lo = (short) (disp); \
325 s4 hi = (short) (((disp) - lo) >> 16); \
327 M_LLD_INTERN(a,b,lo); \
330 M_LLD_INTERN(a,GET_LOW_REG(a),lo); \
334 #define M_IST_INTERN(a,b,disp) M_OP2_IMM(36,a,b,disp)
336 /* Stores with displacement overflow should only happen with PUTFIELD
337 or on the stack. The PUTFIELD instruction does not use REG_ITMP3
338 and a reg_of_var call should not use REG_ITMP3!!! */
340 #define M_IST(a,b,disp) \
342 s4 lo = (short) (disp); \
343 s4 hi = (short) (((disp) - lo) >> 16); \
345 M_IST_INTERN(a,b,lo); \
347 M_ADDIS(b,hi,REG_ITMP3); \
348 M_IST_INTERN(a,REG_ITMP3,lo); \
352 #define M_LST_INTERN(a,b,disp) \
354 M_IST_INTERN(GET_HIGH_REG(a), b, disp); \
355 M_IST_INTERN(GET_LOW_REG(a), b, disp + 4); \
358 #define M_LST(a,b,disp) \
360 s4 lo = (short) (disp); \
361 s4 hi = (short) (((disp) - lo) >> 16); \
363 M_LST_INTERN(a,b,lo); \
365 M_ADDIS(b,hi,REG_ITMP3); \
366 M_LST_INTERN(a,REG_ITMP3, lo); \
370 #define M_STWU_INTERN(a,b,disp) M_OP2_IMM(37,a,b,disp)
372 #define M_STWU(a,b,disp) \
374 s4 lo = (disp) & 0x0000ffff; \
375 s4 hi = ((disp) >> 16); \
376 if (((disp) >= -32678) && ((disp) <= 32767)) { \
377 M_STWU_INTERN(a,b,lo); \
379 M_ADDIS(REG_ZERO,hi,REG_ITMP3); \
380 M_IOR_IMM(REG_ITMP3,lo,REG_ITMP3); \
381 M_STWUX(REG_SP,REG_SP,REG_ITMP3); \
385 #define M_LDA_INTERN(a,b,c) M_IADD_IMM(b, c, a)
387 #define M_LDA(a,b,disp) \
389 s4 lo = (short) (disp); \
390 s4 hi = (short) (((disp) - lo) >> 16); \
392 M_LDA_INTERN(a,b,lo); \
395 M_LDA_INTERN(a,a,lo); \
400 #define M_AADD(a,b,d) M_IADD(a, b, d)
401 #define M_AADD_IMM(a,b,d) M_IADD_IMM(a, b, d)
402 #define M_ALD_INTERN(a,b,disp) M_ILD_INTERN(a,b,disp)
403 #define M_ALD(a,b,disp) M_ILD(a,b,disp)
404 #define M_AST_INTERN(a,b,disp) M_IST_INTERN(a,b,disp)
405 #define M_AST(a,b,disp) M_IST(a,b,disp)
408 /* floating point instructions ************************************************/
410 #define M_CVTDF(a,b) M_OP3(63, 12, 0, 0, b, 0, a)
411 #define M_CVTDL(a,b) M_OP3(63, 14, 0, 0, b, 0, a)
412 #define M_CVTDL_C(a,b) M_OP3(63, 15, 0, 0, b, 0, a)
413 #define M_DADD(a,b,c) M_OP3(63, 21, 0, 0, c, a, b)
414 #define M_DDIV(a,b,c) M_OP3(63, 18, 0, 0, c, a, b)
415 #define M_DMUL(a,b,c) M_OP4(63, 25, 0, c, a, 0, b)
416 #define M_DSQRT(a,b) M_OP3(63, 22, 0, 0, b, 0, a)
417 #define M_DSUB(a,b,c) M_OP3(63, 20, 0, 0, c, a, b)
418 #define M_FABS(a,b) M_OP3(63, 264, 0, 0, b, 0, a)
419 #define M_FADD(a,b,c) M_OP3(59, 21, 0, 0, c, a, b)
420 #define M_FCMPO(a,b) M_OP3(63, 32, 0, 0, 0, a, b)
421 #define M_FCMPU(a,b) M_OP3(63, 0, 0, 0, 0, a, b)
422 #define M_FDIV(a,b,c) M_OP3(59, 18, 0, 0, c, a, b)
423 #define M_FMOV(a,b) M_OP3(63, 72, 0, 0, b, 0, a)
424 #define M_FMOVN(a,b) M_OP3(63, 40, 0, 0, b, 0, a)
425 #define M_FMUL(a,b,c) M_OP4(59, 25, 0, c, a, 0, b)
426 #define M_FSQRT(a,b) M_OP3(59, 22, 0, 0, b, 0, a)
427 #define M_FSUB(a,b,c) M_OP3(59, 20, 0, 0, c, a, b)
428 #define M_LFDX(a,b,c) M_OP3(31, 599, 0, 0, a, b, c)
429 #define M_LFSX(a,b,c) M_OP3(31, 535, 0, 0, a, b, c)
430 #define M_STFDX(a,b,c) M_OP3(31, 727, 0, 0, a, b, c)
431 #define M_STFIWX(a,b,c) M_OP3(31, 983, 0, 0, a, b, c)
432 #define M_STFSX(a,b,c) M_OP3(31, 663, 0, 0, a, b, c)
435 #define M_FLD_INTERN(a,b,disp) M_OP2_IMM(48,a,b,disp)
437 #define M_FLD(a,b,disp) \
439 s4 lo = (short) (disp); \
440 s4 hi = (short) (((disp) - lo) >> 16); \
442 M_FLD_INTERN(a,b,lo); \
444 M_ADDIS(b,hi,REG_ITMP3); \
445 M_FLD_INTERN(a,REG_ITMP3,lo); \
449 #define M_DLD_INTERN(a,b,disp) M_OP2_IMM(50,a,b,disp)
451 #define M_DLD(a,b,disp) \
453 s4 lo = (short) (disp); \
454 s4 hi = (short) (((disp) - lo) >> 16); \
456 M_DLD_INTERN(a,b,lo); \
458 M_ADDIS(b,hi,REG_ITMP3); \
459 M_DLD_INTERN(a,REG_ITMP3,lo); \
463 #define M_FST_INTERN(a,b,disp) M_OP2_IMM(52,a,b,disp)
465 #define M_FST(a,b,disp) \
467 s4 lo = (short) (disp); \
468 s4 hi = (short) (((disp) - lo) >> 16); \
470 M_FST_INTERN(a,b,lo); \
472 M_ADDIS(b,hi,REG_ITMP3); \
473 M_FST_INTERN(a,REG_ITMP3,lo); \
477 #define M_DST_INTERN(a,b,disp) M_OP2_IMM(54,a,b,disp)
479 #define M_DST(a,b,disp) \
481 s4 lo = (short) (disp); \
482 s4 hi = (short) (((disp) - lo) >> 16); \
484 M_DST_INTERN(a,b,lo); \
486 M_ADDIS(b,hi,REG_ITMP3); \
487 M_DST_INTERN(a,REG_ITMP3,lo); \
491 #endif /* _CODEGEN_H */
495 * These are local overrides for various environment variables in Emacs.
496 * Please do not remove this and leave it at the end of the file, where
497 * Emacs will automagically detect them.
498 * ---------------------------------------------------------------------
501 * indent-tabs-mode: t