1 /* src/vm/jit/powerpc/codegen.h - code generation macros and definitions for
4 Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
5 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
6 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
7 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., 59 Temple Place - Suite 330, Boston, MA
26 Contact: cacao@complang.tuwien.ac.at
28 Authors: Andreas Krall
31 Changes: Christian Thalinger
33 $Id: codegen.h 2709 2005-06-15 13:57:07Z christian $
43 #include "vm/global.h"
44 #include "vm/jit/reg.h"
47 /* additional functions and macros to generate code ***************************/
49 /* PowerPC is Big Endian -> High Reg == second reg */
50 /* Low Reg == first ("normal") reg */
51 #define GET_FIRST_REG(a) ((a) & 0x0000ffff)
52 #define GET_SECOND_REG(a) (((a) & 0xffff0000) >> 16)
54 #define SET_FIRST_REG(regoff,b) \
55 do { (regoff) &= 0xffff0000; (regoff) |= (b) & 0x0000ffff; } while(0)
56 #define SET_SECOND_REG(regoff,b) \
58 (regoff) &= 0x0000ffff; (regoff) |= ((b) & 0x0000ffff) << 16; \
61 #define GET_LOW_REG(a) GET_SECOND_REG(a)
62 #define GET_HIGH_REG(a) GET_FIRST_REG(a)
64 #define PACK_REGS(low,high) \
65 ( ((high) & 0x0000ffff) | (((low) & 0x0000ffff) << 16) )
66 #define SET_HIGH_REG(regoff,b) SET_FIRST_REG(regoff, b)
67 #define SET_LOW_REG(regoff,b) SET_SECOND_REG(regoff, b)
69 #if defined(STATISTICS)
70 #define COUNT_SPILLS count_spills++
76 /* gen_nullptr_check(objreg) */
78 #define gen_nullptr_check(objreg) \
82 codegen_addxnullrefs(cd, mcodeptr); \
85 #define gen_bound_check \
87 M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));\
88 M_CMPU(s2, REG_ITMP3);\
90 codegen_addxboundrefs(cd, mcodeptr, s2); \
94 /* MCODECHECK(icnt) */
96 #define MCODECHECK(icnt) \
97 if ((mcodeptr + (icnt)) > cd->mcodeend) \
98 mcodeptr = codegen_increase(cd, (u1 *) mcodeptr)
102 generates an integer-move from register a to b.
103 if a and b are the same int-register, no code will be generated.
106 #define M_INTMOVE(a,b) if ((a) != (b)) { M_MOV(a, b); }
108 #define M_TINTMOVE(t,a,b) \
109 if ((t) == TYPE_LNG) { \
111 M_INTMOVE(GET_LOW_REG((a)), GET_LOW_REG((b))); \
112 M_INTMOVE( GET_HIGH_REG((a)), GET_HIGH_REG((b))); \
114 M_INTMOVE(GET_LOW_REG((a)), GET_LOW_REG((b))); \
116 M_INTMOVE((a), (b)); \
121 generates a floating-point-move from register a to b.
122 if a and b are the same float-register, no code will be generated
125 #define M_FLTMOVE(a,b) if ((a) != (b)) { M_FMOV(a, b); }
129 this function generates code to fetch data from a pseudo-register
130 into a real register.
131 If the pseudo-register has actually been assigned to a real
132 register, no code will be emitted, since following operations
133 can use this register directly.
135 v: pseudoregister to be fetched from
136 tempregnum: temporary register to be used if v is actually spilled to ram
138 return: the register number, where the operand can be found after
139 fetching (this wil be either tempregnum or the register
140 number allready given to v)
142 #define var_to_reg_int0(regnr,v,tempnr,a,b) { \
143 if ((v)->flags & INMEMORY) { \
145 if ((a)) M_ILD(GET_HIGH_REG((tempnr)), REG_SP, 4 * (v)->regoff); \
147 if ((b) && IS_2_WORD_TYPE((v)->type)) \
148 M_ILD((a) ? GET_LOW_REG((tempnr)) : GET_HIGH_REG((tempnr)), REG_SP, 4 * (v)->regoff + 4); \
151 regnr = (v)->regoff; \
153 regnr = (b) ? GET_LOW_REG((v)->regoff) : GET_HIGH_REG((v)->regoff); \
158 #define var_to_reg_int(regnr,v,tempnr) var_to_reg_int0(regnr,v,tempnr,1,1)
159 #define var_to_reg_int_low(regnr,v,tempnr) var_to_reg_int0(regnr,v,tempnr,0,1)
160 #define var_to_reg_int_high(regnr,v,tempnr) var_to_reg_int0(regnr,v,tempnr,1,0)
163 #define var_to_reg_flt(regnr,v,tempnr) { \
164 if ((v)->flags & INMEMORY) { \
166 if ((v)->type==TYPE_DBL) \
167 M_DLD(tempnr,REG_SP,4*(v)->regoff); \
169 M_FLD(tempnr,REG_SP,4*(v)->regoff); \
171 } else regnr=(v)->regoff; \
175 /* store_reg_to_var_xxx:
176 This function generates the code to store the result of an operation
177 back into a spilled pseudo-variable.
178 If the pseudo-variable has not been spilled in the first place, this
179 function will generate nothing.
181 v ............ Pseudovariable
182 tempregnum ... Number of the temporary registers as returned by
185 #define store_reg_to_var_int0(sptr, tempregnum, a, b) { \
186 if ((sptr)->flags & INMEMORY) { \
188 if (a) M_IST(GET_HIGH_REG((tempregnum)), REG_SP, 4 * (sptr)->regoff); \
189 if ((b) && IS_2_WORD_TYPE((sptr)->type)) \
190 M_IST(GET_LOW_REG((tempregnum)), REG_SP, 4 * (sptr)->regoff + 4); \
194 #define store_reg_to_var_int(sptr, tempregnum) \
195 store_reg_to_var_int0(sptr, tempregnum, 1, 1)
197 #define store_reg_to_var_flt(sptr, tempregnum) { \
198 if ((sptr)->flags & INMEMORY) { \
200 if ((sptr)->type==TYPE_DBL) \
201 M_DST(tempregnum, REG_SP, 4 * (sptr)->regoff); \
203 M_FST(tempregnum, REG_SP, 4 * (sptr)->regoff); \
208 #define ICONST(reg,c) \
209 if (((c) >= 0 && (c) <= 32767) || ((c) >= -32768 && (c) < 0)) {\
210 M_LDA((reg), REG_ZERO, (c)); \
212 a = dseg_adds4(cd, c); \
213 M_ILD((reg), REG_PV, a); \
216 #define LCONST(reg,c) \
217 ICONST(GET_HIGH_REG((reg)), (s4) ((s8) (c) >> 32)); \
218 ICONST(GET_LOW_REG((reg)), (s4) ((s8) (c)));
221 #define M_COPY(from,to) \
222 d = reg_of_var(rd, to, REG_IFTMP); \
223 if ((from->regoff != to->regoff) || \
224 ((from->flags ^ to->flags) & INMEMORY)) { \
225 if (IS_FLT_DBL_TYPE(from->type)) { \
226 var_to_reg_flt(s1, from, d); \
228 store_reg_to_var_flt(to, d); \
231 var_to_reg_int(s1, from, d); \
232 M_TINTMOVE(from->type,s1,d); \
233 store_reg_to_var_int(to, d); \
238 #define ALIGNCODENOP \
239 if ((s4) ((ptrint) mcodeptr & 7)) { \
244 /* macros to create code ******************************************************/
246 #define M_OP3(x,y,oe,rc,d,a,b) \
247 *(mcodeptr++) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((oe) << 10) | ((y) << 1) | (rc))
249 #define M_OP4(x,y,rc,d,a,b,c) \
250 *(mcodeptr++) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((b) << 11) | ((c) << 6) | ((y) << 1) | (rc))
252 #define M_OP2_IMM(x,d,a,i) \
253 *(mcodeptr++) = (((x) << 26) | ((d) << 21) | ((a) << 16) | ((i) & 0xffff))
255 #define M_BRMASK 0x0000fffc /* (((1 << 16) - 1) & ~3) */
256 #define M_BRAMASK 0x03fffffc /* (((1 << 26) - 1) & ~3) */
258 #define M_BRA(x,i,a,l) \
259 *(mcodeptr++) = (((x) << 26) | ((((i) * 4) + 4) & M_BRAMASK) | ((a) << 1) | (l))
261 #define M_BRAC(x,bo,bi,i,a,l) \
262 *(mcodeptr++) = (((x) << 26) | ((bo) << 21) | ((bi) << 16) | (((i) * 4 + 4) & M_BRMASK) | ((a) << 1) | (l))
265 /* instruction macros *********************************************************/
267 #define M_IADD(a,b,c) M_OP3(31, 266, 0, 0, c, a, b)
268 #define M_IADD_IMM(a,b,c) M_OP2_IMM(14, c, a, b)
269 #define M_ADDC(a,b,c) M_OP3(31, 10, 0, 0, c, a, b)
270 #define M_ADDIC(a,b,c) M_OP2_IMM(12, c, a, b)
271 #define M_ADDICTST(a,b,c) M_OP2_IMM(13, c, a, b)
272 #define M_ADDE(a,b,c) M_OP3(31, 138, 0, 0, c, a, b)
273 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
274 #define M_ADDME(a,b) M_OP3(31, 234, 0, 0, b, a, 0)
275 #define M_ISUB(a,b,c) M_OP3(31, 40, 0, 0, c, b, a)
276 #define M_ISUBTST(a,b,c) M_OP3(31, 40, 0, 1, c, b, a)
277 #define M_SUBC(a,b,c) M_OP3(31, 8, 0, 0, c, b, a)
278 #define M_SUBIC(a,b,c) M_OP2_IMM(8, c, b, a)
279 #define M_SUBE(a,b,c) M_OP3(31, 136, 0, 0, c, b, a)
280 #define M_SUBZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
281 #define M_SUBME(a,b) M_OP3(31, 232, 0, 0, b, a, 0)
283 #define M_AND(a,b,c) M_OP3(31, 28, 0, 0, a, c, b)
284 #define M_AND_IMM(a,b,c) M_OP2_IMM(28, a, c, b)
285 #define M_ANDIS(a,b,c) M_OP2_IMM(29, a, c, b)
286 #define M_OR(a,b,c) M_OP3(31, 444, 0, 0, a, c, b)
287 #define M_OR_IMM(a,b,c) M_OP2_IMM(24, a, c, b)
288 #define M_ORIS(a,b,c) M_OP2_IMM(25, a, c, b)
289 #define M_XOR(a,b,c) M_OP3(31, 316, 0, 0, a, c, b)
290 #define M_XOR_IMM(a,b,c) M_OP2_IMM(26, a, c, b)
291 #define M_XORIS(a,b,c) M_OP2_IMM(27, a, c, b)
293 #define M_SLL(a,b,c) M_OP3(31, 24, 0, 0, a, c, b)
294 #define M_SRL(a,b,c) M_OP3(31, 536, 0, 0, a, c, b)
295 #define M_SRA(a,b,c) M_OP3(31, 792, 0, 0, a, c, b)
296 #define M_SRA_IMM(a,b,c) M_OP3(31, 824, 0, 0, a, c, b)
298 #define M_IMUL(a,b,c) M_OP3(31, 235, 0, 0, c, a, b)
299 #define M_IMUL_IMM(a,b,c) M_OP2_IMM(7, c, a, b)
300 #define M_IDIV(a,b,c) M_OP3(31, 491, 0, 0, c, a, b)
302 #define M_NEG(a,b) M_OP3(31, 104, 0, 0, b, a, 0)
303 #define M_NOT(a,b) M_OP3(31, 124, 0, 0, a, b, a)
305 #define M_SUBFIC(a,b,c) M_OP2_IMM(8, c, a, b)
306 #define M_SUBFZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
307 #define M_RLWINM(a,b,c,d,e) M_OP4(21, d, 0, a, e, b, c)
308 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
309 #define M_SLL_IMM(a,b,c) M_RLWINM(a,b,0,31-(b),c)
310 #define M_SRL_IMM(a,b,c) M_RLWINM(a,32-(b),b,31,c)
311 #define M_ADDIS(a,b,c) M_OP2_IMM(15, c, a, b)
312 #define M_STFIWX(a,b,c) M_OP3(31, 983, 0, 0, a, b, c)
313 #define M_LWZX(a,b,c) M_OP3(31, 23, 0, 0, a, b, c)
314 #define M_LHZX(a,b,c) M_OP3(31, 279, 0, 0, a, b, c)
315 #define M_LHAX(a,b,c) M_OP3(31, 343, 0, 0, a, b, c)
316 #define M_LBZX(a,b,c) M_OP3(31, 87, 0, 0, a, b, c)
317 #define M_LFSX(a,b,c) M_OP3(31, 535, 0, 0, a, b, c)
318 #define M_LFDX(a,b,c) M_OP3(31, 599, 0, 0, a, b, c)
319 #define M_STWX(a,b,c) M_OP3(31, 151, 0, 0, a, b, c)
320 #define M_STHX(a,b,c) M_OP3(31, 407, 0, 0, a, b, c)
321 #define M_STBX(a,b,c) M_OP3(31, 215, 0, 0, a, b, c)
322 #define M_STFSX(a,b,c) M_OP3(31, 663, 0, 0, a, b, c)
323 #define M_STFDX(a,b,c) M_OP3(31, 727, 0, 0, a, b, c)
324 #define M_STWU(a,b,c) M_OP2_IMM(37, a, b, c)
325 #define M_LDAH(a,b,c) M_ADDIS(b, c, a)
326 #define M_TRAP M_OP3(31, 4, 0, 0, 31, 0, 0)
328 #define M_NOP M_OR_IMM(0, 0, 0)
329 #define M_MOV(a,b) M_OR(a, a, b)
330 #define M_TST(a) M_OP3(31, 444, 0, 1, a, a, a)
332 #define M_DADD(a,b,c) M_OP3(63, 21, 0, 0, c, a, b)
333 #define M_FADD(a,b,c) M_OP3(59, 21, 0, 0, c, a, b)
334 #define M_DSUB(a,b,c) M_OP3(63, 20, 0, 0, c, a, b)
335 #define M_FSUB(a,b,c) M_OP3(59, 20, 0, 0, c, a, b)
336 #define M_DMUL(a,b,c) M_OP4(63, 25, 0, c, a, 0, b)
337 #define M_FMUL(a,b,c) M_OP4(59, 25, 0, c, a, 0, b)
338 #define M_DDIV(a,b,c) M_OP3(63, 18, 0, 0, c, a, b)
339 #define M_FDIV(a,b,c) M_OP3(59, 18, 0, 0, c, a, b)
341 #define M_FABS(a,b) M_OP3(63, 264, 0, 0, b, 0, a)
342 #define M_CVTDL(a,b) M_OP3(63, 14, 0, 0, b, 0, a)
343 #define M_CVTDL_C(a,b) M_OP3(63, 15, 0, 0, b, 0, a)
344 #define M_CVTDF(a,b) M_OP3(63, 12, 0, 0, b, 0, a)
345 #define M_FMOV(a,b) M_OP3(63, 72, 0, 0, b, 0, a)
346 #define M_FMOVN(a,b) M_OP3(63, 40, 0, 0, b, 0, a)
347 #define M_DSQRT(a,b) M_OP3(63, 22, 0, 0, b, 0, a)
348 #define M_FSQRT(a,b) M_OP3(59, 22, 0, 0, b, 0, a)
350 #define M_FCMPU(a,b) M_OP3(63, 0, 0, 0, 0, a, b)
351 #define M_FCMPO(a,b) M_OP3(63, 32, 0, 0, 0, a, b)
353 #define M_BST(a,b,c) M_OP2_IMM(38, a, b, c)
354 #define M_SST(a,b,c) M_OP2_IMM(44, a, b, c)
355 #define M_IST(a,b,c) M_OP2_IMM(36, a, b, c)
356 #define M_AST(a,b,c) M_OP2_IMM(36, a, b, c)
357 #define M_BLDU(a,b,c) M_OP2_IMM(34, a, b, c)
358 #define M_SLDU(a,b,c) M_OP2_IMM(40, a, b, c)
359 #define M_ILD(a,b,c) M_OP2_IMM(32, a, b, c)
360 #define M_ALD(a,b,c) M_OP2_IMM(32, a, b, c)
362 #define M_BSEXT(a,b) M_OP3(31, 954, 0, 0, a, b, 0)
363 #define M_SSEXT(a,b) M_OP3(31, 922, 0, 0, a, b, 0)
364 #define M_CZEXT(a,b) M_RLWINM(a,0,16,31,b)
366 #define M_BR(a) M_BRA(18, a, 0, 0);
367 #define M_BL(a) M_BRA(18, a, 0, 1);
368 #define M_RET M_OP3(19, 16, 0, 0, 20, 0, 0);
369 #define M_JSR M_OP3(19, 528, 0, 1, 20, 0, 0);
370 #define M_RTS M_OP3(19, 528, 0, 0, 20, 0, 0);
372 #define M_CMP(a,b) M_OP3(31, 0, 0, 0, 0, a, b);
373 #define M_CMPU(a,b) M_OP3(31, 32, 0, 0, 0, a, b);
374 #define M_CMPI(a,b) M_OP2_IMM(11, 0, a, b);
375 #define M_CMPUI(a,b) M_OP2_IMM(10, 0, a, b);
377 #define M_BLT(a) M_BRAC(16, 12, 0, a, 0, 0);
378 #define M_BLE(a) M_BRAC(16, 4, 1, a, 0, 0);
379 #define M_BGT(a) M_BRAC(16, 12, 1, a, 0, 0);
380 #define M_BGE(a) M_BRAC(16, 4, 0, a, 0, 0);
381 #define M_BEQ(a) M_BRAC(16, 12, 2, a, 0, 0);
382 #define M_BNE(a) M_BRAC(16, 4, 2, a, 0, 0);
383 #define M_BNAN(a) M_BRAC(16, 12, 3, a, 0, 0);
385 #define M_DLD(a,b,c) M_OP2_IMM(50, a, b, c)
386 #define M_DST(a,b,c) M_OP2_IMM(54, a, b, c)
387 #define M_FLD(a,b,c) M_OP2_IMM(48, a, b, c)
388 #define M_FST(a,b,c) M_OP2_IMM(52, a, b, c)
390 #define M_MFLR(a) M_OP3(31, 339, 0, 0, a, 8, 0)
391 #define M_MFXER(a) M_OP3(31, 339, 0, 0, a, 1, 0)
392 #define M_MFCTR(a) M_OP3(31, 339, 0, 0, a, 9, 0)
393 #define M_MTLR(a) M_OP3(31, 467, 0, 0, a, 8, 0)
394 #define M_MTXER(a) M_OP3(31, 467, 0, 0, a, 1, 0)
395 #define M_MTCTR(a) M_OP3(31, 467, 0, 0, a, 9, 0)
397 #define M_LDA(a,b,c) M_IADD_IMM(b, c, a)
398 #define M_LDATST(a,b,c) M_ADDICTST(b, c, a)
399 #define M_CLR(a) M_IADD_IMM(0, 0, a)
400 #define M_AADD_IMM(a,b,c) M_IADD_IMM(a, b, c)
403 /* function gen_resolvebranch **************************************************
405 parameters: ip ... pointer to instruction after branch (void*)
406 so ... offset of instruction after branch (s4)
407 to ... offset of branch target (s4)
409 *******************************************************************************/
411 #define gen_resolvebranch(ip,so,to) \
412 *((s4*)(ip)-1)=(*((s4*)(ip)-1) & ~M_BRMASK) | (((s4)((to)-(so))+4)&((((*((s4*)(ip)-1)>>26)&63)==18)?M_BRAMASK:M_BRMASK))
415 /* function prototypes */
417 void preregpass(methodinfo *m, registerdata *rd);
418 void docacheflush(u1 *p, long bytelen);
420 #endif /* _CODEGEN_H */
424 * These are local overrides for various environment variables in Emacs.
425 * Please do not remove this and leave it at the end of the file, where
426 * Emacs will automagically detect them.
427 * ---------------------------------------------------------------------
430 * indent-tabs-mode: t