1 /* jit/powerpc/codegen.h - code generation macros and definitions for
4 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
5 Institut f. Computersprachen, TU Wien
6 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser,
7 M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck,
8 P. Tomsich, J. Wenninger
10 This file is part of CACAO.
12 This program is free software; you can redistribute it and/or
13 modify it under the terms of the GNU General Public License as
14 published by the Free Software Foundation; either version 2, or (at
15 your option) any later version.
17 This program is distributed in the hope that it will be useful, but
18 WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 Contact: cacao@complang.tuwien.ac.at
29 Authors: Andreas Krall
32 $Id: codegen.h 1477 2004-11-11 10:47:04Z twisti $
43 /* see also file calling.doc for explanation of calling conventions */
45 /* preallocated registers *****************************************************/
47 /* integer registers */
49 #define REG_RESULT 3 /* to deliver method results */
50 #define REG_RESULT2 4 /* to deliver long method results */
52 /*#define REG_RA 26*/ /* return address */
53 #define REG_PV 13 /* procedure vector, must be provided by caller */
54 #define REG_METHODPTR 12 /* pointer to the place from where the procedure */
55 /* vector has been fetched */
56 #define REG_ITMP1 11 /* temporary register */
57 #define REG_ITMP2 12 /* temporary register and method pointer */
58 #define REG_ITMP3 0 /* temporary register */
60 #define REG_ITMP1_XPTR 11 /* exception pointer = temporary register 1 */
61 #define REG_ITMP2_XPC 12 /* exception pc = temporary register 2 */
63 #define REG_SP 1 /* stack pointer */
64 #define REG_ZERO 0 /* allways zero */
66 /* floating point registers */
68 #define REG_FRESULT 1 /* to deliver floating point method results */
69 #define REG_FTMP1 16 /* temporary floating point register */
70 #define REG_FTMP2 17 /* temporary floating point register */
71 #define REG_FTMP3 0 /* temporary floating point register */
73 #define REG_IFTMP 0 /* temporary integer and floating point register */
76 /*#define INT_SAV_CNT 19*/ /* number of int callee saved registers */
77 #define INT_ARG_CNT 8 /* number of int argument registers */
79 /*#define FLT_SAV_CNT 18*/ /* number of flt callee saved registers */
80 #define FLT_ARG_CNT 13 /* number of flt argument registers */
83 /* additional functions and macros to generate code ***************************/
85 #define BlockPtrOfPC(pc) ((basicblock *) iptr->target)
89 #define COUNT_SPILLS count_spills++
95 /* gen_nullptr_check(objreg) */
97 #define gen_nullptr_check(objreg) \
101 codegen_addxnullrefs(cd, mcodeptr); \
104 #define gen_bound_check \
106 M_ILD(REG_ITMP3, s1, OFFSET(java_arrayheader, size));\
107 M_CMPU(s2, REG_ITMP3);\
109 codegen_addxboundrefs(cd, mcodeptr, s2); \
113 /* MCODECHECK(icnt) */
115 #define MCODECHECK(icnt) \
116 if ((mcodeptr + (icnt)) > cd->mcodeend) \
117 mcodeptr = codegen_increase(cd, (u1 *) mcodeptr)
120 generates an integer-move from register a to b.
121 if a and b are the same int-register, no code will be generated.
124 #define M_INTMOVE(a,b) if ((a) != (b)) { M_MOV(a, b); }
126 #define M_TINTMOVE(t,a,b) \
127 if ((t) == TYPE_LNG) { \
129 M_INTMOVE(rd->secondregs[(a)], rd->secondregs[(b)]); \
130 M_INTMOVE((a), (b)); \
132 M_INTMOVE(rd->secondregs[(a)], rd->secondregs[(b)]); \
134 M_INTMOVE((a), (b)); \
139 generates a floating-point-move from register a to b.
140 if a and b are the same float-register, no code will be generated
143 #define M_FLTMOVE(a,b) if ((a) != (b)) { M_FMOV(a, b); }
147 this function generates code to fetch data from a pseudo-register
148 into a real register.
149 If the pseudo-register has actually been assigned to a real
150 register, no code will be emitted, since following operations
151 can use this register directly.
153 v: pseudoregister to be fetched from
154 tempregnum: temporary register to be used if v is actually spilled to ram
156 return: the register number, where the operand can be found after
157 fetching (this wil be either tempregnum or the register
158 number allready given to v)
161 #define var_to_reg_int0(regnr,v,tempnr,a,b) { \
162 if ((v)->flags & INMEMORY) { \
164 if ((a)) M_ILD((tempnr), REG_SP, 4 * (v)->regoff); \
166 if ((b) && IS_2_WORD_TYPE((v)->type)) \
167 M_ILD((a) ? rd->secondregs[(tempnr)] : (tempnr), REG_SP, 4 * (v)->regoff + 4); \
169 regnr = (!(a) && (b)) ? rd->secondregs[(v)->regoff] : (v)->regoff; \
171 #define var_to_reg_int(regnr,v,tempnr) var_to_reg_int0(regnr,v,tempnr,1,1)
174 #define var_to_reg_flt(regnr,v,tempnr) { \
175 if ((v)->flags & INMEMORY) { \
177 if ((v)->type==TYPE_DBL) \
178 M_DLD(tempnr,REG_SP,4*(v)->regoff); \
180 M_FLD(tempnr,REG_SP,4*(v)->regoff); \
182 } else regnr=(v)->regoff; \
186 /* store_reg_to_var_xxx:
187 This function generates the code to store the result of an operation
188 back into a spilled pseudo-variable.
189 If the pseudo-variable has not been spilled in the first place, this
190 function will generate nothing.
192 v ............ Pseudovariable
193 tempregnum ... Number of the temporary registers as returned by
197 #define store_reg_to_var_int0(sptr, tempregnum, a, b) { \
198 if ((sptr)->flags & INMEMORY) { \
200 if (a) M_IST(tempregnum, REG_SP, 4 * (sptr)->regoff); \
201 if ((b) && IS_2_WORD_TYPE((sptr)->type)) \
202 M_IST(rd->secondregs[tempregnum], REG_SP, 4 * (sptr)->regoff + 4); \
206 #define store_reg_to_var_int(sptr, tempregnum) \
207 store_reg_to_var_int0(sptr, tempregnum, 1, 1)
209 #define store_reg_to_var_flt(sptr, tempregnum) { \
210 if ((sptr)->flags & INMEMORY) { \
212 if ((sptr)->type==TYPE_DBL) \
213 M_DST(tempregnum, REG_SP, 4 * (sptr)->regoff); \
215 M_FST(tempregnum, REG_SP, 4 * (sptr)->regoff); \
220 #define ICONST(reg,c) \
221 if (((c) >= 0 && (c) <= 32767) || ((c) >= -32768 && (c) < 0)) {\
222 M_LDA((reg), REG_ZERO, (c)); \
224 a = dseg_adds4(cd, c); \
225 M_ILD((reg), REG_PV, a); \
228 #define LCONST(reg,c) \
229 ICONST((reg), (s4) ((s8) (c) >> 32)); \
230 ICONST(rd->secondregs[(reg)], (s4) ((s8) (c)));
233 #define M_COPY(from,to) \
234 d = reg_of_var(rd, to, REG_IFTMP); \
235 if ((from->regoff != to->regoff) || \
236 ((from->flags ^ to->flags) & INMEMORY)) { \
237 if (IS_FLT_DBL_TYPE(from->type)) { \
238 var_to_reg_flt(s1, from, d); \
240 store_reg_to_var_flt(to, d); \
243 var_to_reg_int(s1, from, d); \
244 M_TINTMOVE(from->type,s1,d); \
245 store_reg_to_var_int(to, d); \
249 #define ALIGNCODENOP {if((int)((long)mcodeptr&7)){M_NOP;}}
252 /* macros to create code ******************************************************/
254 #define M_OP3(x,y,oe,rc,d,a,b) \
255 *mcodeptr++ = (((x)<<26) | ((d)<<21) | ((a)<<16) | ((b)<<11) | ((oe)<<10) | ((y)<<1) | (rc))
257 #define M_OP4(x,y,rc,d,a,b,c) \
258 *mcodeptr++ = (((x)<<26) | ((d)<<21) | ((a)<<16) | ((b)<<11) | ((c)<<6) | ((y)<<1) | (rc))
260 #define M_OP2_IMM(x,d,a,i) \
261 *mcodeptr++ = (((x)<<26) | ((d)<<21) | ((a)<<16) | ((i)&0xffff))
263 #define M_BRMASK (((1<<16)-1)&~3)
264 #define M_BRAMASK (((1<<26)-1)&~3)
266 #define M_BRA(x,i,a,l) \
267 *mcodeptr++ = (((x)<<26) | (((i)*4+4)&M_BRAMASK) | ((a)<<1) | (l));
269 #define M_BRAC(x,bo,bi,i,a,l) \
270 *mcodeptr++ = (((x)<<26) | ((bo)<<21) | ((bi)<<16) | (((i)*4+4)&M_BRMASK) | ((a)<<1) | (l));
272 #define M_IADD(a,b,c) M_OP3(31, 266, 0, 0, c, a, b)
273 #define M_IADD_IMM(a,b,c) M_OP2_IMM(14, c, a, b)
274 #define M_ADDC(a,b,c) M_OP3(31, 10, 0, 0, c, a, b)
275 #define M_ADDIC(a,b,c) M_OP2_IMM(12, c, a, b)
276 #define M_ADDICTST(a,b,c) M_OP2_IMM(13, c, a, b)
277 #define M_ADDE(a,b,c) M_OP3(31, 138, 0, 0, c, a, b)
278 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
279 #define M_ADDME(a,b) M_OP3(31, 234, 0, 0, b, a, 0)
280 #define M_ISUB(a,b,c) M_OP3(31, 40, 0, 0, c, b, a)
281 #define M_ISUBTST(a,b,c) M_OP3(31, 40, 0, 1, c, b, a)
282 #define M_SUBC(a,b,c) M_OP3(31, 8, 0, 0, c, b, a)
283 #define M_SUBIC(a,b,c) M_OP2_IMM(8, c, b, a)
284 #define M_SUBE(a,b,c) M_OP3(31, 136, 0, 0, c, b, a)
285 #define M_SUBZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
286 #define M_SUBME(a,b) M_OP3(31, 232, 0, 0, b, a, 0)
287 #define M_AND(a,b,c) M_OP3(31, 28, 0, 0, a, c, b)
288 #define M_AND_IMM(a,b,c) M_OP2_IMM(28, a, c, b)
289 #define M_ANDIS(a,b,c) M_OP2_IMM(29, a, c, b)
290 #define M_OR(a,b,c) M_OP3(31, 444, 0, 0, a, c, b)
291 #define M_OR_IMM(a,b,c) M_OP2_IMM(24, a, c, b)
292 #define M_ORIS(a,b,c) M_OP2_IMM(25, a, c, b)
293 #define M_XOR(a,b,c) M_OP3(31, 316, 0, 0, a, c, b)
294 #define M_XOR_IMM(a,b,c) M_OP2_IMM(26, a, c, b)
295 #define M_XORIS(a,b,c) M_OP2_IMM(27, a, c, b)
296 #define M_SLL(a,b,c) M_OP3(31, 24, 0, 0, a, c, b)
297 #define M_SRL(a,b,c) M_OP3(31, 536, 0, 0, a, c, b)
298 #define M_SRA(a,b,c) M_OP3(31, 792, 0, 0, a, c, b)
299 #define M_SRA_IMM(a,b,c) M_OP3(31, 824, 0, 0, a, c, b)
300 #define M_IMUL(a,b,c) M_OP3(31, 235, 0, 0, c, a, b)
301 #define M_IMUL_IMM(a,b,c) M_OP2_IMM(7, c, a, b)
302 #define M_IDIV(a,b,c) M_OP3(31, 491, 0, 0, c, a, b)
303 #define M_NEG(a,b) M_OP3(31, 104, 0, 0, b, a, 0)
304 #define M_NOT(a,b) M_OP3(31, 124, 0, 0, a, b, a)
306 #define M_SUBFIC(a,b,c) M_OP2_IMM(8, c, a, b)
307 #define M_SUBFZE(a,b) M_OP3(31, 200, 0, 0, b, a, 0)
308 #define M_RLWINM(a,b,c,d,e) M_OP4(21, d, 0, a, e, b, c)
309 #define M_ADDZE(a,b) M_OP3(31, 202, 0, 0, b, a, 0)
310 #define M_SLL_IMM(a,b,c) M_RLWINM(a,b,0,31-(b),c)
311 #define M_SRL_IMM(a,b,c) M_RLWINM(a,32-(b),b,31,c)
312 #define M_ADDIS(a,b,c) M_OP2_IMM(15, c, a, b)
313 #define M_STFIWX(a,b,c) M_OP3(31, 983, 0, 0, a, b, c)
314 #define M_LWZX(a,b,c) M_OP3(31, 23, 0, 0, a, b, c)
315 #define M_LHZX(a,b,c) M_OP3(31, 279, 0, 0, a, b, c)
316 #define M_LHAX(a,b,c) M_OP3(31, 343, 0, 0, a, b, c)
317 #define M_LBZX(a,b,c) M_OP3(31, 87, 0, 0, a, b, c)
318 #define M_LFSX(a,b,c) M_OP3(31, 535, 0, 0, a, b, c)
319 #define M_LFDX(a,b,c) M_OP3(31, 599, 0, 0, a, b, c)
320 #define M_STWX(a,b,c) M_OP3(31, 151, 0, 0, a, b, c)
321 #define M_STHX(a,b,c) M_OP3(31, 407, 0, 0, a, b, c)
322 #define M_STBX(a,b,c) M_OP3(31, 215, 0, 0, a, b, c)
323 #define M_STFSX(a,b,c) M_OP3(31, 663, 0, 0, a, b, c)
324 #define M_STFDX(a,b,c) M_OP3(31, 727, 0, 0, a, b, c)
325 #define M_STWU(a,b,c) M_OP2_IMM(37, a, b, c)
326 #define M_LDAH(a,b,c) M_ADDIS(b, c, a)
327 #define M_TRAP M_OP3(31, 4, 0, 0, 31, 0, 0)
329 #define M_NOP M_OR_IMM(0, 0, 0)
330 #define M_MOV(a,b) M_OR(a, a, b)
331 #define M_TST(a) M_OP3(31, 444, 0, 1, a, a, a)
333 #define M_DADD(a,b,c) M_OP3(63, 21, 0, 0, c, a, b)
334 #define M_FADD(a,b,c) M_OP3(59, 21, 0, 0, c, a, b)
335 #define M_DSUB(a,b,c) M_OP3(63, 20, 0, 0, c, a, b)
336 #define M_FSUB(a,b,c) M_OP3(59, 20, 0, 0, c, a, b)
337 #define M_DMUL(a,b,c) M_OP4(63, 25, 0, c, a, 0, b)
338 #define M_FMUL(a,b,c) M_OP4(59, 25, 0, c, a, 0, b)
339 #define M_DDIV(a,b,c) M_OP3(63, 18, 0, 0, c, a, b)
340 #define M_FDIV(a,b,c) M_OP3(59, 18, 0, 0, c, a, b)
342 #define M_FABS(a,b) M_OP3(63, 264, 0, 0, b, 0, a)
343 #define M_CVTDL(a,b) M_OP3(63, 14, 0, 0, b, 0, a)
344 #define M_CVTDL_C(a,b) M_OP3(63, 15, 0, 0, b, 0, a)
345 #define M_CVTDF(a,b) M_OP3(63, 12, 0, 0, b, 0, a)
346 #define M_FMOV(a,b) M_OP3(63, 72, 0, 0, b, 0, a)
347 #define M_FMOVN(a,b) M_OP3(63, 40, 0, 0, b, 0, a)
348 #define M_DSQRT(a,b) M_OP3(63, 22, 0, 0, b, 0, a)
349 #define M_FSQRT(a,b) M_OP3(59, 22, 0, 0, b, 0, a)
351 #define M_FCMPU(a,b) M_OP3(63, 0, 0, 0, 0, a, b)
352 #define M_FCMPO(a,b) M_OP3(63, 32, 0, 0, 0, a, b)
354 #define M_BST(a,b,c) M_OP2_IMM(38, a, b, c)
355 #define M_SST(a,b,c) M_OP2_IMM(44, a, b, c)
356 #define M_IST(a,b,c) M_OP2_IMM(36, a, b, c)
357 #define M_AST(a,b,c) M_OP2_IMM(36, a, b, c)
358 #define M_BLDU(a,b,c) M_OP2_IMM(34, a, b, c)
359 #define M_SLDU(a,b,c) M_OP2_IMM(40, a, b, c)
360 #define M_ILD(a,b,c) M_OP2_IMM(32, a, b, c)
361 #define M_ALD(a,b,c) M_OP2_IMM(32, a, b, c)
363 #define M_BSEXT(a,b) M_OP3(31, 954, 0, 0, a, b, 0)
364 #define M_SSEXT(a,b) M_OP3(31, 922, 0, 0, a, b, 0)
365 #define M_CZEXT(a,b) M_RLWINM(a,0,16,31,b)
367 #define M_BR(a) M_BRA(18, a, 0, 0);
368 #define M_BL(a) M_BRA(18, a, 0, 1);
369 #define M_RET M_OP3(19, 16, 0, 0, 20, 0, 0);
370 #define M_JSR M_OP3(19, 528, 0, 1, 20, 0, 0);
371 #define M_RTS M_OP3(19, 528, 0, 0, 20, 0, 0);
373 #define M_CMP(a,b) M_OP3(31, 0, 0, 0, 0, a, b);
374 #define M_CMPU(a,b) M_OP3(31, 32, 0, 0, 0, a, b);
375 #define M_CMPI(a,b) M_OP2_IMM(11, 0, a, b);
376 #define M_CMPUI(a,b) M_OP2_IMM(10, 0, a, b);
378 #define M_BLT(a) M_BRAC(16, 12, 0, a, 0, 0);
379 #define M_BLE(a) M_BRAC(16, 4, 1, a, 0, 0);
380 #define M_BGT(a) M_BRAC(16, 12, 1, a, 0, 0);
381 #define M_BGE(a) M_BRAC(16, 4, 0, a, 0, 0);
382 #define M_BEQ(a) M_BRAC(16, 12, 2, a, 0, 0);
383 #define M_BNE(a) M_BRAC(16, 4, 2, a, 0, 0);
384 #define M_BNAN(a) M_BRAC(16, 12, 3, a, 0, 0);
386 #define M_DLD(a,b,c) M_OP2_IMM(50, a, b, c)
387 #define M_DST(a,b,c) M_OP2_IMM(54, a, b, c)
388 #define M_FLD(a,b,c) M_OP2_IMM(48, a, b, c)
389 #define M_FST(a,b,c) M_OP2_IMM(52, a, b, c)
391 #define M_MFLR(a) M_OP3(31, 339, 0, 0, a, 8, 0)
392 #define M_MFXER(a) M_OP3(31, 339, 0, 0, a, 1, 0)
393 #define M_MFCTR(a) M_OP3(31, 339, 0, 0, a, 9, 0)
394 #define M_MTLR(a) M_OP3(31, 467, 0, 0, a, 8, 0)
395 #define M_MTXER(a) M_OP3(31, 467, 0, 0, a, 1, 0)
396 #define M_MTCTR(a) M_OP3(31, 467, 0, 0, a, 9, 0)
398 #define M_LDA(a,b,c) M_IADD_IMM(b, c, a)
399 #define M_LDATST(a,b,c) M_ADDICTST(b, c, a)
400 #define M_CLR(a) M_IADD_IMM(0, 0, a)
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);
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