deps/lightning/lib/jit_hppa.c

   1 /*
   2  * Copyright (C) 2013-2019  Free Software Foundation, Inc.
   3  *
   4  * This file is part of GNU lightning.
   5  *
   6  * GNU lightning is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published
   8  * by the Free Software Foundation; either version 3, or (at your option)
   9  * any later version.
  10  *
  11  * GNU lightning is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  14  * License for more details.
  15  *
  16  * Authors:
  17  *      Paulo Cesar Pereira de Andrade
  18  */
  19
  20 #include <lightning.h>
  21 #include <lightning/jit_private.h>
  22
  23 #define jit_arg_reg_p(i)                (i >= 0 && i < 4)
  24
  25 #define PROTO                           1
  26 #  include "jit_hppa-cpu.c"
  27 #  include "jit_hppa-fpu.c"
  28 #undef PROTO
  29
  30 /*
  31  * Types
  32  */
  33 typedef jit_pointer_t   jit_va_list;
  34
  35 /*
  36  * Prototypes
  37  */
  38 #define patch(instr, node)              _patch(_jit, instr, node)
  39 static void _patch(jit_state_t*,jit_word_t,jit_node_t*);
  40
  41 /* libgcc */
  42 extern void __clear_cache(void *, void *);
  43
  44 /*
  45  * Initialization
  46  */
  47 jit_register_t          _rvs[] = {
  48     { 0,                        "r0" },         /* Zero */
  49     /* Not register starved, so, avoid allocating r1 and rp
  50      * due to being implicit target of ADDIL and B,L */
  51     { 1,                        "r1" },         /* Scratch */
  52     { 2,                        "rp" },         /* Return Pointer and scratch */
  53     { rc(sav) | 3,              "r3" },
  54     { 19,                       "r19" },        /* Linkage Table */
  55     { rc(gpr) | 20,             "r20" },
  56     { rc(gpr) | 21,             "r21" },
  57     { rc(gpr) | 22,             "r22" },
  58     { rc(gpr) | 29,             "ret1" },
  59     { rc(gpr) | 28,             "ret0" },
  60     /* JIT_Rx in callee save registers due to need to call
  61      * functions to implement some instructions */
  62     /* JIT_R0- JIT_R2 */
  63     { rc(gpr) | rc(sav) | 4,    "r4" },
  64     { rc(gpr) | rc(sav) | 5,    "r5" },
  65     { rc(gpr) | rc(sav) | 6,    "r6" },
  66     /* JIT_V0- JIT_V2 */
  67     { rc(gpr) | rc(sav) | 7,    "r7" },
  68     { rc(sav) | rc(sav) | 8,    "r8" },
  69     { rc(gpr) | rc(sav) | 9,    "r9" },
  70     /* JIT_R3 */
  71     { rc(gpr) | rc(sav) | 10,   "r10" },
  72     /* JIT_V3+ */
  73     { rc(gpr) | rc(sav) | 11,   "r11" },
  74     { rc(gpr) | rc(sav) | 12,   "r12" },
  75     { rc(gpr) | rc(sav) | 13,   "r13" },
  76     { rc(gpr) | rc(sav) | 14,   "r14" },
  77     { rc(gpr) | rc(sav) | 15,   "r15" },
  78     { rc(gpr) | rc(sav) | 16,   "r16" },
  79     { rc(gpr) | rc(sav) | 17,   "r17" },
  80     { rc(gpr) | rc(sav) | 18,   "r18" },
  81     /* Arguments */
  82     { rc(gpr) | rc(arg) | 23,   "r23" },
  83     { rc(gpr) | rc(arg) | 24,   "r24" },
  84     { rc(gpr) | rc(arg) | 25,   "r25" },
  85     { rc(gpr) | rc(arg) | 26,   "r26" },
  86     { 27,                       "dp" },         /* Data Pointer */
  87     { 30,                       "sp" },
  88     { 31,                       "r31" },        /* Link Register */
  89     { rc(fpr) | 31,             "fr31" },
  90     { rc(fpr) | 30,             "fr30" },
  91     { rc(fpr) | 29,             "fr29" },
  92     { rc(fpr) | 28,             "fr28" },
  93     { rc(fpr) | 27,             "fr27" },
  94     { rc(fpr) | 26,             "fr26" },
  95     { rc(fpr) | 25,             "fr25" },
  96     { rc(fpr) | 24,             "fr24" },
  97     { rc(fpr) | 23,             "fr23" },
  98     { rc(fpr) | 22,             "fr22" },
  99     { rc(fpr) | 11,             "fr11" },
 100     { rc(fpr) | 10,             "fr10" },
 101     { rc(fpr) | 9,              "fr9" },
 102     { rc(fpr) | 8,              "fr8" },
 103     /* Arguments */
 104     { rc(fpr) | rc(arg) | 7,    "fr7" },
 105     { rc(fpr) | rc(arg) | 6,    "fr6" },
 106     { rc(fpr) | rc(arg) | 5,    "fr5" },
 107     { rc(fpr) | rc(arg) | 4,    "fr4" },
 108     /* Callee Saves */
 109     { rc(fpr) | rc(sav) | 21,   "fr21" },
 110     { rc(fpr) | rc(sav) | 20,   "fr20" },
 111     { rc(fpr) | rc(sav) | 19,   "fr19" },
 112     { rc(fpr) | rc(sav) | 18,   "fr18" },
 113     { rc(fpr) | rc(sav) | 17,   "fr17" },
 114     { rc(fpr) | rc(sav) | 16,   "fr16" },
 115     { rc(fpr) | rc(sav) | 15,   "fr15" },
 116     { rc(fpr) | rc(sav) | 14,   "fr14" },
 117     { rc(fpr) | rc(sav) | 13,   "fr13" },
 118     { rc(fpr) | rc(sav) | 12,   "fr12" },
 119     { 0,                        "fpsr" },
 120     { 1,                        "fpe2" },
 121     { 2,                        "fpe4" },
 122     { 3,                        "fpe6" },
 123     { _NOREG,                   "<none>" },
 124 };
 125
 126 /*
 127  * Implementation
 128  */
 129 void
 130 jit_get_cpu(void)
 131 {
 132     /* FIXME Expecting PARISC 2.0, for PARISC 1.0 should not use fr16-fr31 */
 133 }
 134
 135 void
 136 _jit_init(jit_state_t *_jit)
 137 {
 138     _jitc->reglen = jit_size(_rvs) - 1;
 139 }
 140
 141 void
 142 _jit_prolog(jit_state_t *_jit)
 143 {
 144     jit_int32_t         offset;
 145
 146     if (_jitc->function)
 147         jit_epilog();
 148     assert(jit_regset_cmp_ui(&_jitc->regarg, 0) == 0);
 149     jit_regset_set_ui(&_jitc->regsav, 0);
 150     offset = _jitc->functions.offset;
 151     if (offset >= _jitc->functions.length) {
 152         jit_realloc((jit_pointer_t *)&_jitc->functions.ptr,
 153                     _jitc->functions.length * sizeof(jit_function_t),
 154                     (_jitc->functions.length + 16) * sizeof(jit_function_t));
 155         _jitc->functions.length += 16;
 156     }
 157     _jitc->function = _jitc->functions.ptr + _jitc->functions.offset++;
 158     _jitc->function->self.size = params_offset;
 159     _jitc->function->self.argi = _jitc->function->self.alen = 0;
 160     /* float conversion */
 161     _jitc->function->self.aoff = alloca_offset;
 162     _jitc->function->self.call = jit_call_default;
 163     jit_alloc((jit_pointer_t *)&_jitc->function->regoff,
 164               _jitc->reglen * sizeof(jit_int32_t));
 165
 166     /* _no_link here does not mean the jit_link() call can be removed
 167      * by rewriting as:
 168      * _jitc->function->prolog = jit_new_node(jit_code_prolog);
 169      */
 170     _jitc->function->prolog = jit_new_node_no_link(jit_code_prolog);
 171     jit_link(_jitc->function->prolog);
 172     _jitc->function->prolog->w.w = offset;
 173     _jitc->function->epilog = jit_new_node_no_link(jit_code_epilog);
 174     /*  u:      label value
 175      *  v:      offset in blocks vector
 176      *  w:      offset in functions vector
 177      */
 178     _jitc->function->epilog->w.w = offset;
 179
 180     jit_regset_new(&_jitc->function->regset);
 181 }
 182
 183 jit_int32_t
 184 _jit_allocai(jit_state_t *_jit, jit_int32_t length)
 185 {
 186     jit_int32_t         offset;
 187     assert(_jitc->function);
 188     switch (length) {
 189         case 0: case 1:
 190             break;
 191         case 2:
 192             _jitc->function->self.aoff = (_jitc->function->self.aoff + 1) & -2;
 193             break;
 194         case 3: case 4:
 195             _jitc->function->self.aoff = (_jitc->function->self.aoff + 3) & -4;
 196             break;
 197         default:
 198             _jitc->function->self.aoff = (_jitc->function->self.aoff + 7) & -8;
 199             break;
 200     }
 201     if (!_jitc->realize) {
 202         jit_inc_synth_ww(allocai, _jitc->function->self.aoff, length);
 203         jit_dec_synth();
 204     }
 205     offset = _jitc->function->self.aoff;
 206     _jitc->function->self.aoff += length;
 207     return (offset);
 208 }
 209
 210 void
 211 _jit_allocar(jit_state_t *_jit, jit_int32_t u, jit_int32_t v)
 212 {
 213     jit_int32_t          reg;
 214     assert(_jitc->function);
 215     jit_inc_synth_ww(allocar, u, v);
 216     if (!_jitc->function->allocar) {
 217         _jitc->function->aoffoff = jit_allocai(sizeof(jit_int32_t));
 218         _jitc->function->allocar = 1;
 219     }
 220     reg = jit_get_reg(jit_class_gpr);
 221     jit_addi(reg, v, 63);
 222     jit_andi(reg, reg, -64);
 223     jit_ldxi_i(u, JIT_FP, _jitc->function->aoffoff);
 224     jit_addr(JIT_SP, JIT_SP, reg);
 225     jit_stxi_i(_jitc->function->aoffoff, JIT_FP, u);
 226     jit_unget_reg(reg);
 227     jit_dec_synth();
 228 }
 229
 230 void
 231 _jit_ret(jit_state_t *_jit)
 232 {
 233     jit_node_t          *instr;
 234     assert(_jitc->function);
 235     jit_inc_synth(ret);
 236     /* jump to epilog */
 237     instr = jit_jmpi();
 238     jit_patch_at(instr, _jitc->function->epilog);
 239     jit_dec_synth();
 240 }
 241
 242 void
 243 _jit_retr(jit_state_t *_jit, jit_int32_t u)
 244 {
 245     jit_inc_synth_w(retr, u);
 246     jit_movr(JIT_RET, u);
 247     jit_ret();
 248     jit_dec_synth();
 249 }
 250
 251 void
 252 _jit_reti(jit_state_t *_jit, jit_word_t u)
 253 {
 254     jit_inc_synth_w(reti, u);
 255     jit_movi(JIT_RET, u);
 256     jit_ret();
 257     jit_dec_synth();
 258 }
 259
 260 void
 261 _jit_retr_f(jit_state_t *_jit, jit_int32_t u)
 262 {
 263     jit_inc_synth_w(retr_f, u);
 264     jit_movr_f(JIT_FRET, u);
 265     jit_ret();
 266     jit_dec_synth();
 267 }
 268
 269 void
 270 _jit_reti_f(jit_state_t *_jit, jit_float32_t u)
 271 {
 272     jit_inc_synth_f(reti_f, u);
 273     jit_movi_f(JIT_FRET, u);
 274     jit_ret();
 275     jit_dec_synth();
 276 }
 277
 278 void
 279 _jit_retr_d(jit_state_t *_jit, jit_int32_t u)
 280 {
 281     jit_inc_synth_w(retr_d, u);
 282     jit_movr_d(JIT_FRET, u);
 283     jit_ret();
 284     jit_dec_synth();
 285 }
 286
 287 void
 288 _jit_reti_d(jit_state_t *_jit, jit_float64_t u)
 289 {
 290     jit_inc_synth_d(reti_d, u);
 291     jit_movi_d(JIT_FRET, u);
 292     jit_ret();
 293     jit_dec_synth();
 294 }
 295
 296 void
 297 _jit_epilog(jit_state_t *_jit)
 298 {
 299     assert(_jitc->function);
 300     assert(_jitc->function->epilog->next == NULL);
 301     jit_link(_jitc->function->epilog);
 302     _jitc->function = NULL;
 303 }
 304
 305 jit_bool_t
 306 _jit_arg_register_p(jit_state_t *_jit, jit_node_t *u)
 307 {
 308     assert(u->code == jit_code_arg ||
 309            u->code == jit_code_arg_f || u->code == jit_code_arg_d);
 310     return (jit_arg_reg_p(u->u.w));
 311 }
 312
 313 void
 314 _jit_ellipsis(jit_state_t *_jit)
 315 {
 316     jit_inc_synth(ellipsis);
 317     if (_jitc->prepare) {
 318         jit_link_prepare();
 319         assert(!(_jitc->function->call.call & jit_call_varargs));
 320         _jitc->function->call.call |= jit_call_varargs;
 321     }
 322     else {
 323         jit_link_prolog();
 324         assert(!(_jitc->function->self.call & jit_call_varargs));
 325         _jitc->function->self.call |= jit_call_varargs;
 326
 327         _jitc->function->vagp = _jitc->function->self.argi;
 328     }
 329     jit_dec_synth();
 330 }
 331
 332 void
 333 _jit_va_push(jit_state_t *_jit, jit_int32_t u)
 334 {
 335     jit_inc_synth_w(va_push, u);
 336     jit_pushargr(u);
 337     jit_dec_synth();
 338 }
 339
 340 jit_node_t *
 341 _jit_arg(jit_state_t *_jit)
 342 {
 343     jit_node_t          *node;
 344     jit_int32_t          offset;
 345     assert(_jitc->function);
 346     _jitc->function->self.size -= sizeof(jit_word_t);
 347     if (jit_arg_reg_p(_jitc->function->self.argi))
 348         offset = _jitc->function->self.argi++;
 349     else
 350         offset = _jitc->function->self.size;
 351     node = jit_new_node_ww(jit_code_arg, offset,
 352                            ++_jitc->function->self.argn);
 353     jit_link_prolog();
 354     return (node);
 355 }
 356
 357 jit_node_t *
 358 _jit_arg_f(jit_state_t *_jit)
 359 {
 360     jit_node_t          *node;
 361     jit_int32_t          offset;
 362     assert(_jitc->function);
 363     _jitc->function->self.size -= sizeof(jit_word_t);
 364     if (jit_arg_reg_p(_jitc->function->self.argi))
 365         offset = _jitc->function->self.argi++;
 366     else
 367         offset = _jitc->function->self.size;
 368     node = jit_new_node_ww(jit_code_arg_f, offset,
 369                            ++_jitc->function->self.argn);
 370     jit_link_prolog();
 371     return (node);
 372 }
 373
 374 jit_node_t *
 375 _jit_arg_d(jit_state_t *_jit)
 376 {
 377     jit_node_t          *node;
 378     jit_int32_t          offset;
 379     assert(_jitc->function);
 380     if (_jitc->function->self.argi & 1) {
 381         ++_jitc->function->self.argi;
 382         _jitc->function->self.size -= sizeof(jit_word_t);
 383     }
 384     _jitc->function->self.size -= sizeof(jit_float64_t);
 385     if (jit_arg_reg_p(_jitc->function->self.argi)) {
 386         offset = _jitc->function->self.argi + 1;
 387         _jitc->function->self.argi += 2;
 388     }
 389     else {
 390         /* "Standard" initial value (-52) is unaligned */
 391         if (_jitc->function->self.size & 7)
 392             _jitc->function->self.size -= sizeof(jit_word_t);
 393         offset = _jitc->function->self.size;
 394     }
 395     node = jit_new_node_ww(jit_code_arg_d, offset,
 396                            ++_jitc->function->self.argn);
 397     jit_link_prolog();
 398     return (node);
 399 }
 400
 401 void
 402 _jit_getarg_c(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 403 {
 404     assert(v->code == jit_code_arg);
 405     jit_inc_synth_wp(getarg_c, u, v);
 406     if (v->u.w >= 0)
 407         jit_extr_c(u, _R26 - v->u.w);
 408     else
 409         jit_ldxi_c(u, JIT_FP, v->u.w + 3);
 410     jit_dec_synth();
 411 }
 412
 413 void
 414 _jit_getarg_uc(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 415 {
 416     assert(v->code == jit_code_arg);
 417     jit_inc_synth_wp(getarg_uc, u, v);
 418     if (v->u.w >= 0)
 419         jit_extr_uc(u, _R26 - v->u.w);
 420     else
 421         jit_ldxi_uc(u, JIT_FP, v->u.w + 3);
 422     jit_dec_synth();
 423 }
 424
 425 void
 426 _jit_getarg_s(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 427 {
 428     assert(v->code == jit_code_arg);
 429     jit_inc_synth_wp(getarg_s, u, v);
 430     if (v->u.w >= 0)
 431         jit_extr_s(u, _R26 - v->u.w);
 432     else
 433         jit_ldxi_s(u, JIT_FP, v->u.w + 2);
 434     jit_dec_synth();
 435 }
 436
 437 void
 438 _jit_getarg_us(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 439 {
 440     assert(v->code == jit_code_arg);
 441     jit_inc_synth_wp(getarg_us, u, v);
 442     if (v->u.w >= 0)
 443         jit_extr_us(u, _R26 - v->u.w);
 444     else
 445         jit_ldxi_us(u, JIT_FP, v->u.w + 2);
 446     jit_dec_synth();
 447 }
 448
 449 void
 450 _jit_getarg_i(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 451 {
 452     assert(v->code == jit_code_arg);
 453     jit_inc_synth_wp(getarg_i, u, v);
 454     if (v->u.w >= 0)
 455         jit_movr(u, _R26 - v->u.w);
 456     else
 457         jit_ldxi_i(u, JIT_FP, v->u.w);
 458     jit_dec_synth();
 459 }
 460
 461 void
 462 _jit_putargr(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 463 {
 464     assert(v->code == jit_code_arg);
 465     jit_inc_synth_wp(putargr, u, v);
 466     if (v->u.w >= 0)
 467         jit_movr(_R26 - v->u.w, u);
 468     else
 469         jit_stxi(v->u.w, JIT_FP, u);
 470     jit_dec_synth();
 471 }
 472
 473 void
 474 _jit_putargi(jit_state_t *_jit, jit_word_t u, jit_node_t *v)
 475 {
 476     jit_int32_t         regno;
 477     assert(v->code == jit_code_arg);
 478     jit_inc_synth_wp(putargi, u, v);
 479     if (v->u.w >= 0)
 480         jit_movi(_R26 - v->u.w, u);
 481     else {
 482         regno = jit_get_reg(jit_class_gpr);
 483         jit_movi(regno, u);
 484         jit_stxi(v->u.w, JIT_FP, regno);
 485         jit_unget_reg(regno);
 486     }
 487     jit_dec_synth();
 488 }
 489
 490 void
 491 _jit_getarg_f(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 492 {
 493     assert(v->code == jit_code_arg_f);
 494     jit_inc_synth_wp(getarg_f, u, v);
 495     if (v->u.w >= 0)
 496         jit_movr_f(u, _F4 - v->u.w);
 497     else
 498         jit_ldxi_f(u, JIT_FP, v->u.w);
 499     jit_dec_synth();
 500 }
 501
 502 void
 503 _jit_putargr_f(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 504 {
 505     assert(v->code == jit_code_arg_f);
 506     jit_inc_synth_wp(putargr_f, u, v);
 507     if (v->u.w >= 0)
 508         jit_movr_f(_F4 - v->u.w, u);
 509     else
 510         jit_stxi_f(v->u.w, JIT_FP, u);
 511     jit_dec_synth();
 512 }
 513
 514 void
 515 _jit_putargi_f(jit_state_t *_jit, jit_float32_t u, jit_node_t *v)
 516 {
 517     jit_int32_t         regno;
 518     assert(v->code == jit_code_arg_f);
 519     jit_inc_synth_fp(putargi_f, u, v);
 520     if (v->u.w >= 0)
 521         jit_movi_f(_R26 - v->u.w, u);
 522     else {
 523         regno = jit_get_reg(jit_class_fpr);
 524         jit_movi_f(regno, u);
 525         jit_stxi_f(v->u.w, JIT_FP, regno);
 526         jit_unget_reg(regno);
 527     }
 528     jit_dec_synth();
 529 }
 530
 531 void
 532 _jit_getarg_d(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 533 {
 534     assert(v->code == jit_code_arg_d);
 535     jit_inc_synth_wp(getarg_d, u, v);
 536     if (v->u.w >= 0)
 537         jit_movr_d(u, _F4 - v->u.w);
 538     else
 539         jit_ldxi_d(u, JIT_FP, v->u.w);
 540     jit_dec_synth();
 541 }
 542
 543 void
 544 _jit_putargr_d(jit_state_t *_jit, jit_int32_t u, jit_node_t *v)
 545 {
 546     assert(v->code == jit_code_arg_d);
 547     jit_inc_synth_wp(putargr_d, u, v);
 548     if (v->u.w >= 0)
 549         jit_movr_d(_F4 - v->u.w, u);
 550     else
 551         jit_stxi_d(v->u.w, JIT_FP, u);
 552     jit_dec_synth();
 553 }
 554
 555 void
 556 _jit_putargi_d(jit_state_t *_jit, jit_float64_t u, jit_node_t *v)
 557 {
 558     jit_int32_t         regno;
 559     assert(v->code == jit_code_arg_d);
 560     jit_inc_synth_dp(putargi_d, u, v);
 561     if (v->u.w >= 0)
 562         jit_movi_d(_R26 - v->u.w, u);
 563     else {
 564         regno = jit_get_reg(jit_class_fpr);
 565         jit_movi_d(regno, u);
 566         jit_stxi_d(v->u.w, JIT_FP, regno);
 567         jit_unget_reg(regno);
 568     }
 569     jit_dec_synth();
 570 }
 571
 572 void
 573 _jit_pushargr(jit_state_t *_jit, jit_int32_t u)
 574 {
 575     assert(_jitc->function);
 576     jit_inc_synth_w(pushargr, u);
 577     jit_link_prepare();
 578     _jitc->function->call.size -= sizeof(jit_word_t);
 579     if (jit_arg_reg_p(_jitc->function->call.argi)) {
 580         jit_movr(_R26 - _jitc->function->call.argi, u);
 581         ++_jitc->function->call.argi;
 582     }
 583     else
 584         jit_stxi(_jitc->function->call.size + params_offset, JIT_SP, u);
 585     jit_dec_synth();
 586 }
 587
 588 void
 589 _jit_pushargi(jit_state_t *_jit, jit_word_t u)
 590 {
 591     jit_int32_t          regno;
 592     assert(_jitc->function);
 593     jit_inc_synth_w(pushargi, u);
 594     jit_link_prepare();
 595     _jitc->function->call.size -= sizeof(jit_word_t);
 596     if (jit_arg_reg_p(_jitc->function->call.argi)) {
 597         jit_movi(_R26 - _jitc->function->call.argi, u);
 598         ++_jitc->function->call.argi;
 599     }
 600     else {
 601         regno = jit_get_reg(jit_class_gpr);
 602         jit_movi(regno, u);
 603         jit_stxi(_jitc->function->call.size + params_offset, JIT_SP, regno);
 604         jit_unget_reg(regno);
 605     }
 606     jit_dec_synth();
 607 }
 608
 609 void
 610 _jit_pushargr_f(jit_state_t *_jit, jit_int32_t u)
 611 {
 612     assert(_jitc->function);
 613     jit_inc_synth_w(pushargr_f, u);
 614     jit_link_prepare();
 615     _jitc->function->call.size -= sizeof(jit_word_t);
 616     if (jit_arg_reg_p(_jitc->function->call.argi)) {
 617         jit_movr_f(_F4 - _jitc->function->call.argi, u);
 618 #if !defined(__hpux)
 619         /* HP-UX appears to always pass float arguments in gpr registers */
 620         if (_jitc->function->call.call & jit_call_varargs)
 621 #endif
 622         {
 623             jit_stxi_f(alloca_offset - 8, JIT_FP, u);
 624             jit_ldxi(_R26 - _jitc->function->call.argi, JIT_FP,
 625                      alloca_offset - 8);
 626         }
 627         ++_jitc->function->call.argi;
 628     }
 629     else
 630         jit_stxi_f(_jitc->function->call.size + params_offset, JIT_SP, u);
 631     jit_dec_synth();
 632 }
 633
 634 void
 635 _jit_pushargi_f(jit_state_t *_jit, jit_float32_t u)
 636 {
 637     jit_int32_t          regno;
 638     assert(_jitc->function);
 639     jit_inc_synth_f(pushargi_f, u);
 640     jit_link_prepare();
 641     _jitc->function->call.size -= sizeof(jit_word_t);
 642     if (jit_arg_reg_p(_jitc->function->call.argi)) {
 643         jit_movi_f(_F4 - _jitc->function->call.argi, u);
 644 #if !defined(__hpux)
 645         /* HP-UX appears to always pass float arguments in gpr registers */
 646         if (_jitc->function->call.call & jit_call_varargs)
 647 #endif
 648         {
 649             jit_stxi_f(alloca_offset - 8, JIT_FP,
 650                        _F4 - _jitc->function->call.argi);
 651             jit_ldxi(_R26 - _jitc->function->call.argi,
 652                      JIT_FP, alloca_offset - 8);
 653         }
 654         ++_jitc->function->call.argi;
 655     }
 656     else {
 657         regno = jit_get_reg(jit_class_fpr);
 658         jit_movi_f(regno, u);
 659         jit_stxi_f(_jitc->function->call.size + params_offset, JIT_SP, regno);
 660         jit_unget_reg(regno);
 661     }
 662     jit_dec_synth();
 663 }
 664
 665 void
 666 _jit_pushargr_d(jit_state_t *_jit, jit_int32_t u)
 667 {
 668     assert(_jitc->function);
 669     jit_inc_synth_w(pushargr_d, u);
 670     jit_link_prepare();
 671     _jitc->function->call.size -= sizeof(jit_float64_t);
 672     if (_jitc->function->call.argi & 1) {
 673         ++_jitc->function->call.argi;
 674         _jitc->function->call.size -= sizeof(jit_word_t);
 675     }
 676     if (jit_arg_reg_p(_jitc->function->call.argi)) {
 677         jit_movr_d(_F4 - (_jitc->function->call.argi + 1), u);
 678 #if !defined(__hpux)
 679         /* HP-UX appears to always pass float arguments in gpr registers */
 680         if (_jitc->function->call.call & jit_call_varargs)
 681 #endif
 682         {
 683             jit_stxi_d(alloca_offset - 8, JIT_FP, u);
 684             jit_ldxi(_R26 - _jitc->function->call.argi,
 685                      JIT_FP, alloca_offset - 4);
 686             jit_ldxi(_R25 - _jitc->function->call.argi,
 687                      JIT_FP, alloca_offset - 8);
 688         }
 689         _jitc->function->call.argi += 2;
 690     }
 691     else {
 692         /* "Standard" initial value (-52) is unaligned */
 693         if ((_jitc->function->call.size + params_offset) & 7)
 694             _jitc->function->call.size -= sizeof(jit_word_t);
 695         jit_stxi_d(_jitc->function->call.size + params_offset, JIT_SP, u);
 696     }
 697     jit_dec_synth();
 698 }
 699
 700 void
 701 _jit_pushargi_d(jit_state_t *_jit, jit_float64_t u)
 702 {
 703     jit_int32_t          regno;
 704     assert(_jitc->function);
 705     jit_inc_synth_d(pushargi_d, u);
 706     jit_link_prepare();
 707     _jitc->function->call.size -= sizeof(jit_float64_t);
 708     if (_jitc->function->call.argi & 1) {
 709         ++_jitc->function->call.argi;
 710         _jitc->function->call.size -= sizeof(jit_word_t);
 711     }
 712     if (jit_arg_reg_p(_jitc->function->call.argi)) {
 713         jit_movi_d(_F4 - (_jitc->function->call.argi + 1), u);
 714 #if !defined(__hpux)
 715         /* HP-UX appears to always pass float arguments in gpr registers */
 716         if (_jitc->function->call.call & jit_call_varargs)
 717 #endif
 718         {
 719             jit_stxi_d(alloca_offset - 8, JIT_FP,
 720                        _F4 - (_jitc->function->call.argi + 1));
 721             jit_ldxi(_R26 - _jitc->function->call.argi,
 722                      JIT_FP, alloca_offset - 4);
 723             jit_ldxi(_R25 - _jitc->function->call.argi,
 724                      JIT_FP, alloca_offset - 8);
 725         }
 726         _jitc->function->call.argi += 2;
 727     }
 728     else {
 729         regno = jit_get_reg(jit_class_fpr);
 730         jit_movi_d(regno, u);
 731         if ((_jitc->function->call.size + params_offset) & 7)
 732             _jitc->function->call.size -= sizeof(jit_word_t);
 733         jit_stxi_d(_jitc->function->call.size + params_offset, JIT_SP, regno);
 734         jit_unget_reg(regno);
 735     }
 736     jit_dec_synth();
 737 }
 738
 739 jit_bool_t
 740 _jit_regarg_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
 741 {
 742     jit_int32_t         spec;
 743     spec = jit_class(_rvs[regno].spec);
 744     if (spec & jit_class_arg) {
 745         if (spec & jit_class_gpr) {
 746             regno -= _R23;
 747             if (regno >= 0 && regno < node->v.w)
 748                 return (1);
 749         }
 750         else if (spec & jit_class_fpr) {
 751             regno = _F4 - regno;
 752             if (regno >= 0 && regno < node->w.w)
 753                 return (1);
 754         }
 755     }
 756     return (0);
 757 }
 758
 759 void
 760 _jit_finishr(jit_state_t *_jit, jit_int32_t r0)
 761 {
 762     jit_node_t          *call;
 763     assert(_jitc->function);
 764     jit_inc_synth_w(finishr, r0);
 765     if (_jitc->function->self.alen > _jitc->function->call.size)
 766         _jitc->function->self.alen = _jitc->function->call.size;
 767     call = jit_callr(r0);
 768     call->v.w = call->w.w = _jitc->function->call.argi;
 769     _jitc->function->call.argi = _jitc->function->call.size = 0;
 770     _jitc->prepare = 0;
 771     jit_dec_synth();
 772 }
 773
 774 jit_node_t *
 775 _jit_finishi(jit_state_t *_jit, jit_pointer_t i0)
 776 {
 777     jit_node_t          *node;
 778     assert(_jitc->function);
 779     jit_inc_synth_w(finishi, (jit_word_t)i0);
 780     if (_jitc->function->self.alen > _jitc->function->call.size)
 781         _jitc->function->self.alen = _jitc->function->call.size;
 782     node = jit_calli(i0);
 783     node->v.w = node->w.w = _jitc->function->call.argi;
 784     _jitc->function->call.argi = _jitc->function->call.size = 0;
 785     _jitc->prepare = 0;
 786     jit_dec_synth();
 787     return (node);
 788 }
 789
 790 void
 791 _jit_retval_c(jit_state_t *_jit, jit_int32_t r0)
 792 {
 793     jit_inc_synth_w(retval_c, r0);
 794     jit_extr_c(r0, JIT_RET);
 795     jit_dec_synth();
 796 }
 797
 798 void
 799 _jit_retval_uc(jit_state_t *_jit, jit_int32_t r0)
 800 {
 801     jit_inc_synth_w(retval_uc, r0);
 802     jit_extr_uc(r0, JIT_RET);
 803     jit_dec_synth();
 804 }
 805
 806 void
 807 _jit_retval_s(jit_state_t *_jit, jit_int32_t r0)
 808 {
 809     jit_inc_synth_w(retval_s, r0);
 810     jit_extr_s(r0, JIT_RET);
 811     jit_dec_synth();
 812 }
 813
 814 void
 815 _jit_retval_us(jit_state_t *_jit, jit_int32_t r0)
 816 {
 817     jit_inc_synth_w(retval_us, r0);
 818     jit_extr_us(r0, JIT_RET);
 819     jit_dec_synth();
 820 }
 821
 822 void
 823 _jit_retval_i(jit_state_t *_jit, jit_int32_t r0)
 824 {
 825     jit_inc_synth_w(retval_i, r0);
 826     jit_movr(r0, JIT_RET);
 827     jit_dec_synth();
 828 }
 829
 830 void
 831 _jit_retval_f(jit_state_t *_jit, jit_int32_t r0)
 832 {
 833     jit_inc_synth_w(retval_f, r0);
 834     jit_movr_f(r0, JIT_FRET);
 835     jit_dec_synth();
 836 }
 837
 838 void
 839 _jit_retval_d(jit_state_t *_jit, jit_int32_t r0)
 840 {
 841     jit_inc_synth_w(retval_d, r0);
 842     jit_movr_d(r0, JIT_FRET);
 843     jit_dec_synth();
 844 }
 845
 846 jit_pointer_t
 847 _emit_code(jit_state_t *_jit)
 848 {
 849     jit_node_t          *node;
 850     jit_node_t          *temp;
 851     jit_word_t           word;
 852     jit_int32_t          value;
 853     jit_int32_t          offset;
 854     struct {
 855         jit_node_t      *node;
 856         jit_word_t       word;
 857 #if DEVEL_DISASSEMBLER
 858         jit_word_t       prevw;
 859 #endif
 860         jit_int32_t      patch_offset;
 861     } undo;
 862 #if DEVEL_DISASSEMBLER
 863     jit_word_t           prevw;
 864 #endif
 865
 866     _jitc->function = NULL;
 867
 868     jit_reglive_setup();
 869
 870     undo.word = 0;
 871     undo.node = NULL;
 872     undo.patch_offset = 0;
 873
 874 #define case_rr(name, type)                                             \
 875             case jit_code_##name##r##type:                              \
 876                 name##r##type(rn(node->u.w), rn(node->v.w));            \
 877                 break
 878 #define case_rw(name, type)                                             \
 879             case jit_code_##name##i##type:                              \
 880                 name##i##type(rn(node->u.w), node->v.w);                \
 881                 break
 882 #define case_wr(name, type)                                             \
 883             case jit_code_##name##i##type:                              \
 884                 name##i##type(node->u.w, rn(node->v.w));                \
 885                 break
 886 #define case_rrr(name, type)                                            \
 887             case jit_code_##name##r##type:                              \
 888                 name##r##type(rn(node->u.w),                            \
 889                               rn(node->v.w), rn(node->w.w));            \
 890                 break
 891 #define case_rrrr(name, type)                                           \
 892             case jit_code_##name##r##type:                              \
 893                 name##r##type(rn(node->u.q.l), rn(node->u.q.h),         \
 894                               rn(node->v.w), rn(node->w.w));            \
 895                 break
 896 #define case_rrw(name, type)                                            \
 897             case jit_code_##name##i##type:                              \
 898                 name##i##type(rn(node->u.w),rn(node->v.w), node->w.w);  \
 899                 break
 900 #define case_rrrw(name, type)                                           \
 901             case jit_code_##name##i##type:                              \
 902                 name##i##type(rn(node->u.q.l), rn(node->u.q.h),         \
 903                               rn(node->v.w), node->w.w);                \
 904                 break
 905 #define case_rrf(name, type, size)                                      \
 906             case jit_code_##name##i##type:                              \
 907                 assert(node->flag & jit_flag_data);                     \
 908                 name##i##type(rn(node->u.w), rn(node->v.w),             \
 909                               (jit_float##size##_t *)node->w.n->u.w);   \
 910                 break
 911 #define case_wrr(name, type)                                            \
 912             case jit_code_##name##i##type:                              \
 913                 name##i##type(node->u.w,rn(node->v.w), rn(node->w.w));  \
 914                 break
 915 #define case_brr(name, type)                                            \
 916             case jit_code_##name##r##type:                              \
 917                 temp = node->u.n;                                       \
 918                 assert(temp->code == jit_code_label ||                  \
 919                        temp->code == jit_code_epilog);                  \
 920                 if (temp->flag & jit_flag_patch)                        \
 921                     name##r##type(temp->u.w, rn(node->v.w),             \
 922                                   rn(node->w.w));                       \
 923                 else {                                                  \
 924                     word = name##r##type(_jit->pc.w,                    \
 925                                          rn(node->v.w), rn(node->w.w)); \
 926                     patch(word, node);                                  \
 927                 }                                                       \
 928                 break
 929 #define case_brw(name, type)                                            \
 930             case jit_code_##name##i##type:                              \
 931                 temp = node->u.n;                                       \
 932                 assert(temp->code == jit_code_label ||                  \
 933                        temp->code == jit_code_epilog);                  \
 934                 if (temp->flag & jit_flag_patch)                        \
 935                     name##i##type(temp->u.w,                            \
 936                                   rn(node->v.w), node->w.w);            \
 937                 else {                                                  \
 938                     word = name##i##type(_jit->pc.w,                    \
 939                                          rn(node->v.w), node->w.w);     \
 940                     patch(word, node);                                  \
 941                 }                                                       \
 942                 break
 943 #define case_brf(name, type, size)                                      \
 944             case jit_code_##name##i##type:                              \
 945                 temp = node->u.n;                                       \
 946                 assert(temp->code == jit_code_label ||                  \
 947                        temp->code == jit_code_epilog);                  \
 948                 if (temp->flag & jit_flag_patch)                        \
 949                     name##i##type(temp->u.w, rn(node->v.w),             \
 950                                 (jit_float##size##_t *)node->w.n->u.w); \
 951                 else {                                                  \
 952                     word = name##i##type(_jit->pc.w, rn(node->v.w),     \
 953                                 (jit_float##size##_t *)node->w.n->u.w); \
 954                     patch(word, node);                                  \
 955                 }                                                       \
 956                 break
 957 #if DEVEL_DISASSEMBLER
 958     prevw = _jit->pc.w;
 959 #endif
 960     for (node = _jitc->head; node; node = node->next) {
 961         if (_jit->pc.uc >= _jitc->code.end)
 962             return (NULL);
 963
 964 #if DEVEL_DISASSEMBLER
 965         node->offset = (jit_uword_t)_jit->pc.w - (jit_uword_t)prevw;
 966         prevw = _jit->pc.w;
 967 #endif
 968         value = jit_classify(node->code);
 969         jit_regarg_set(node, value);
 970         switch (node->code) {
 971             case jit_code_align:
 972                 assert(!(node->u.w & (node->u.w - 1)) &&
 973                        node->u.w <= sizeof(jit_word_t));
 974                 if (node->u.w == sizeof(jit_word_t) &&
 975                     (word = _jit->pc.w & (sizeof(jit_word_t) - 1)))
 976                     nop(sizeof(jit_word_t) - word);
 977                 break;
 978             case jit_code_note:         case jit_code_name:
 979                 node->u.w = _jit->pc.w;
 980                 break;
 981             case jit_code_label:
 982                 /* remember label is defined */
 983                 node->flag |= jit_flag_patch;
 984                 node->u.w = _jit->pc.w;
 985                 break;
 986                 case_rrr(add,);
 987                 case_rrw(add,);
 988                 case_rrr(addc,);
 989                 case_rrw(addc,);
 990                 case_rrr(addx,);
 991                 case_rrw(addx,);
 992                 case_rrr(sub,);
 993                 case_rrw(sub,);
 994                 case_rrr(subc,);
 995                 case_rrw(subc,);
 996                 case_rrr(subx,);
 997                 case_rrw(subx,);
 998                 case_rrw(rsb,);
 999                 case_rrr(mul,);
1000                 case_rrw(mul,);
1001                 case_rrrr(qmul,);
1002                 case_rrrw(qmul,);
1003                 case_rrrr(qmul, _u);
1004                 case_rrrw(qmul, _u);
1005                 case_rrr(div,);
1006                 case_rrw(div,);
1007                 case_rrr(div, _u);
1008                 case_rrw(div, _u);
1009                 case_rrr(rem,);
1010                 case_rrw(rem,);
1011                 case_rrr(rem, _u);
1012                 case_rrw(rem, _u);
1013                 case_rrrr(qdiv,);
1014                 case_rrrw(qdiv,);
1015                 case_rrrr(qdiv, _u);
1016                 case_rrrw(qdiv, _u);
1017                 case_rrr(and,);
1018                 case_rrw(and,);
1019                 case_rrr(or,);
1020                 case_rrw(or,);
1021                 case_rrr(xor,);
1022                 case_rrw(xor,);
1023                 case_rrr(lsh,);
1024                 case_rrw(lsh,);
1025                 case_rrr(rsh,);
1026                 case_rrw(rsh,);
1027                 case_rrr(rsh, _u);
1028                 case_rrw(rsh, _u);
1029                 case_rrr(movn,);
1030                 case_rrr(movz,);
1031                 case_rr(mov,);
1032             case jit_code_movi:
1033                 if (node->flag & jit_flag_node) {
1034                     temp = node->v.n;
1035                     if (temp->code == jit_code_data ||
1036                         (temp->code == jit_code_label &&
1037                          (temp->flag & jit_flag_patch)))
1038                         movi(rn(node->u.w), temp->u.w);
1039                     else {
1040                         assert(temp->code == jit_code_label ||
1041                                temp->code == jit_code_epilog);
1042                         word = movi_p(rn(node->u.w), node->v.w);
1043                         patch(word, node);
1044                     }
1045                 }
1046                 else
1047                     movi(rn(node->u.w), node->v.w);
1048                 break;
1049                 case_rr(neg,);
1050                 case_rr(com,);
1051                 case_rr(ext, _c);
1052                 case_rr(ext, _uc);
1053                 case_rr(ext, _s);
1054                 case_rr(ext, _us);
1055                 case_rr(hton, _us);
1056                 case_rr(hton, _ui);
1057                 case_rr(bswap, _us);
1058                 case_rr(bswap, _ui);
1059                 case_rrr(lt,);
1060                 case_rrw(lt,);
1061                 case_rrr(lt, _u);
1062                 case_rrw(lt, _u);
1063                 case_rrr(le,);
1064                 case_rrw(le,);
1065                 case_rrr(le, _u);
1066                 case_rrw(le, _u);
1067                 case_rrr(eq,);
1068                 case_rrw(eq,);
1069                 case_rrr(ge,);
1070                 case_rrw(ge,);
1071                 case_rrr(ge, _u);
1072                 case_rrw(ge, _u);
1073                 case_rrr(gt,);
1074                 case_rrw(gt,);
1075                 case_rrr(gt, _u);
1076                 case_rrw(gt, _u);
1077                 case_rrr(ne,);
1078                 case_rrw(ne,);
1079                 case_rr(ld, _c);
1080                 case_rw(ld, _c);
1081                 case_rr(ld, _uc);
1082                 case_rw(ld, _uc);
1083                 case_rr(ld, _s);
1084                 case_rw(ld, _s);
1085                 case_rr(ld, _us);
1086                 case_rw(ld, _us);
1087                 case_rr(ld, _i);
1088                 case_rw(ld, _i);
1089                 case_rrr(ldx, _c);
1090                 case_rrw(ldx, _c);
1091                 case_rrr(ldx, _uc);
1092                 case_rrw(ldx, _uc);
1093                 case_rrr(ldx, _s);
1094                 case_rrw(ldx, _s);
1095                 case_rrr(ldx, _us);
1096                 case_rrw(ldx, _us);
1097                 case_rrr(ldx, _i);
1098                 case_rrw(ldx, _i);
1099                 case_rr(st, _c);
1100                 case_wr(st, _c);
1101                 case_rr(st, _s);
1102                 case_wr(st, _s);
1103                 case_rr(st, _i);
1104                 case_wr(st, _i);
1105                 case_rrr(stx, _c);
1106                 case_wrr(stx, _c);
1107                 case_rrr(stx, _s);
1108                 case_wrr(stx, _s);
1109                 case_rrr(stx, _i);
1110                 case_wrr(stx, _i);
1111                 case_brr(blt,);
1112                 case_brw(blt,);
1113                 case_brr(blt, _u);
1114                 case_brw(blt, _u);
1115                 case_brr(ble,);
1116                 case_brw(ble,);
1117                 case_brr(ble, _u);
1118                 case_brw(ble, _u);
1119                 case_brr(beq,);
1120                 case_brw(beq,);
1121                 case_brr(bge,);
1122                 case_brw(bge,);
1123                 case_brr(bge, _u);
1124                 case_brw(bge, _u);
1125                 case_brr(bgt,);
1126                 case_brw(bgt,);
1127                 case_brr(bgt, _u);
1128                 case_brw(bgt, _u);
1129                 case_brr(bne,);
1130                 case_brw(bne,);
1131                 case_brr(bms,);
1132                 case_brw(bms,);
1133                 case_brr(bmc,);
1134                 case_brw(bmc,);
1135                 case_brr(boadd,);
1136                 case_brw(boadd,);
1137                 case_brr(boadd, _u);
1138                 case_brw(boadd, _u);
1139                 case_brr(bxadd,);
1140                 case_brw(bxadd,);
1141                 case_brr(bxadd, _u);
1142                 case_brw(bxadd, _u);
1143                 case_brr(bosub,);
1144                 case_brw(bosub,);
1145                 case_brr(bosub, _u);
1146                 case_brw(bosub, _u);
1147                 case_brr(bxsub,);
1148                 case_brw(bxsub,);
1149                 case_brr(bxsub, _u);
1150                 case_brw(bxsub, _u);
1151                 case_rr(mov, _f);
1152             case jit_code_movi_f:
1153                 assert(node->flag & jit_flag_data);
1154                 movi_f(rn(node->u.w), (jit_float32_t *)node->v.n->u.w);
1155                 break;
1156                 case_rr(mov, _d);
1157             case jit_code_movi_d:
1158                 assert(node->flag & jit_flag_data);
1159                 movi_d(rn(node->u.w), (jit_float64_t *)node->v.n->u.w);
1160                 break;
1161                 case_rr(trunc, _f_i);
1162                 case_rr(trunc, _d_i);
1163                 case_rr(ext, _f);
1164                 case_rr(ext, _d);
1165                 case_rr(ext, _d_f);
1166                 case_rr(ext, _f_d);
1167                 case_rr(abs, _f);
1168                 case_rr(abs, _d);
1169                 case_rr(neg, _f);
1170                 case_rr(neg, _d);
1171                 case_rr(sqrt, _f);
1172                 case_rr(sqrt, _d);
1173                 case_rrr(add, _f);
1174                 case_rrf(add, _f, 32);
1175                 case_rrr(add, _d);
1176                 case_rrf(add, _d, 64);
1177                 case_rrr(sub, _f);
1178                 case_rrf(sub, _f, 32);
1179                 case_rrf(rsb, _f, 32);
1180                 case_rrr(sub, _d);
1181                 case_rrf(sub, _d, 64);
1182                 case_rrf(rsb, _d, 64);
1183                 case_rrr(mul, _f);
1184                 case_rrf(mul, _f, 32);
1185                 case_rrr(mul, _d);
1186                 case_rrf(mul, _d, 64);
1187                 case_rrr(div, _f);
1188                 case_rrf(div, _f, 32);
1189                 case_rrr(div, _d);
1190                 case_rrf(div, _d, 64);
1191                 case_rrr(lt, _f);
1192                 case_rrf(lt, _f, 32);
1193                 case_rrr(lt, _d);
1194                 case_rrf(lt, _d, 64);
1195                 case_rrr(le, _f);
1196                 case_rrf(le, _f, 32);
1197                 case_rrr(le, _d);
1198                 case_rrf(le, _d, 64);
1199                 case_rrr(eq, _f);
1200                 case_rrf(eq, _f, 32);
1201                 case_rrr(eq, _d);
1202                 case_rrf(eq, _d, 64);
1203                 case_rrr(ge, _f);
1204                 case_rrf(ge, _f, 32);
1205                 case_rrr(ge, _d);
1206                 case_rrf(ge, _d, 64);
1207                 case_rrr(gt, _f);
1208                 case_rrf(gt, _f, 32);
1209                 case_rrr(gt, _d);
1210                 case_rrf(gt, _d, 64);
1211                 case_rrr(ne, _f);
1212                 case_rrf(ne, _f, 32);
1213                 case_rrr(ne, _d);
1214                 case_rrf(ne, _d, 64);
1215                 case_rrr(unlt, _f);
1216                 case_rrf(unlt, _f, 32);
1217                 case_rrr(unlt, _d);
1218                 case_rrf(unlt, _d, 64);
1219                 case_rrr(unle, _f);
1220                 case_rrf(unle, _f, 32);
1221                 case_rrr(unle, _d);
1222                 case_rrf(unle, _d, 64);
1223                 case_rrr(uneq, _f);
1224                 case_rrf(uneq, _f, 32);
1225                 case_rrr(uneq, _d);
1226                 case_rrf(uneq, _d, 64);
1227                 case_rrr(unge, _f);
1228                 case_rrf(unge, _f, 32);
1229                 case_rrr(unge, _d);
1230                 case_rrf(unge, _d, 64);
1231                 case_rrr(ungt, _f);
1232                 case_rrf(ungt, _f, 32);
1233                 case_rrr(ungt, _d);
1234                 case_rrf(ungt, _d, 64);
1235                 case_rrr(ltgt, _f);
1236                 case_rrf(ltgt, _f, 32);
1237                 case_rrr(ltgt, _d);
1238                 case_rrf(ltgt, _d, 64);
1239                 case_rrr(ord, _f);
1240                 case_rrf(ord, _f, 32);
1241                 case_rrr(ord, _d);
1242                 case_rrf(ord, _d, 64);
1243                 case_rrr(unord, _f);
1244                 case_rrf(unord, _f, 32);
1245                 case_rrr(unord, _d);
1246                 case_rrf(unord, _d, 64);
1247                 case_rr(ld, _f);
1248                 case_rw(ld, _f);
1249                 case_rr(ld, _d);
1250                 case_rw(ld, _d);
1251                 case_rrr(ldx, _f);
1252                 case_rrw(ldx, _f);
1253                 case_rrr(ldx, _d);
1254                 case_rrw(ldx, _d);
1255                 case_rr(st, _f);
1256                 case_wr(st, _f);
1257                 case_rr(st, _d);
1258                 case_wr(st, _d);
1259                 case_rrr(stx, _f);
1260                 case_wrr(stx, _f);
1261                 case_rrr(stx, _d);
1262                 case_wrr(stx, _d);
1263                 case_brr(blt, _f);
1264                 case_brf(blt, _f, 32);
1265                 case_brr(blt, _d);
1266                 case_brf(blt, _d, 64);
1267                 case_brr(ble, _f);
1268                 case_brf(ble, _f, 32);
1269                 case_brr(ble, _d);
1270                 case_brf(ble, _d, 64);
1271                 case_brr(beq, _f);
1272                 case_brf(beq, _f, 32);
1273                 case_brr(beq, _d);
1274                 case_brf(beq, _d, 64);
1275                 case_brr(bge, _f);
1276                 case_brf(bge, _f, 32);
1277                 case_brr(bge, _d);
1278                 case_brf(bge, _d, 64);
1279                 case_brr(bgt, _f);
1280                 case_brf(bgt, _f, 32);
1281                 case_brr(bgt, _d);
1282                 case_brf(bgt, _d, 64);
1283                 case_brr(bne, _f);
1284                 case_brf(bne, _f, 32);
1285                 case_brr(bne, _d);
1286                 case_brf(bne, _d, 64);
1287                 case_brr(bunlt, _f);
1288                 case_brf(bunlt, _f, 32);
1289                 case_brr(bunlt, _d);
1290                 case_brf(bunlt, _d, 64);
1291                 case_brr(bunle, _f);
1292                 case_brf(bunle, _f, 32);
1293                 case_brr(bunle, _d);
1294                 case_brf(bunle, _d, 64);
1295                 case_brr(buneq, _f);
1296                 case_brf(buneq, _f, 32);
1297                 case_brr(buneq, _d);
1298                 case_brf(buneq, _d, 64);
1299                 case_brr(bunge, _f);
1300                 case_brf(bunge, _f, 32);
1301                 case_brr(bunge, _d);
1302                 case_brf(bunge, _d, 64);
1303                 case_brr(bungt, _f);
1304                 case_brf(bungt, _f, 32);
1305                 case_brr(bungt, _d);
1306                 case_brf(bungt, _d, 64);
1307                 case_brr(bltgt, _f);
1308                 case_brf(bltgt, _f, 32);
1309                 case_brr(bltgt, _d);
1310                 case_brf(bltgt, _d, 64);
1311                 case_brr(bord, _f);
1312                 case_brf(bord, _f, 32);
1313                 case_brr(bord, _d);
1314                 case_brf(bord, _d, 64);
1315                 case_brr(bunord, _f);
1316                 case_brf(bunord, _f, 32);
1317                 case_brr(bunord, _d);
1318                 case_brf(bunord, _d, 64);
1319             case jit_code_jmpr:
1320                 jmpr(rn(node->u.w));
1321                 break;
1322             case jit_code_jmpi:
1323                 if (node->flag & jit_flag_node) {
1324                     temp = node->u.n;
1325                     assert(temp->code == jit_code_label ||
1326                            temp->code == jit_code_epilog);
1327                     if (temp->flag & jit_flag_patch)
1328                         jmpi(temp->u.w);
1329                     else {
1330                         word = jmpi_p(_jit->pc.w);
1331                         patch(word, node);
1332                     }
1333                 }
1334                 else
1335                     jmpi(node->u.w);
1336                 break;
1337             case jit_code_callr:
1338                 callr(rn(node->u.w));
1339                 break;
1340             case jit_code_calli:
1341                 if (node->flag & jit_flag_node) {
1342                     temp = node->u.n;
1343                     assert(temp->code == jit_code_label ||
1344                            temp->code == jit_code_epilog);
1345                     if (!(temp->flag & jit_flag_patch)) {
1346                         word = calli_p(temp->u.w);
1347                         patch(word, node);
1348                     }
1349                     else
1350                         calli(temp->u.w);
1351                 }
1352                 else
1353                     calli(node->u.w);
1354                 break;
1355             case jit_code_prolog:
1356                 _jitc->function = _jitc->functions.ptr + node->w.w;
1357                 undo.node = node;
1358                 undo.word = _jit->pc.w;
1359 #if DEVEL_DISASSEMBLER
1360                 undo.prevw = prevw;
1361 #endif
1362                 undo.patch_offset = _jitc->patches.offset;
1363             restart_function:
1364                 _jitc->again = 0;
1365                 prolog(node);
1366                 break;
1367             case jit_code_epilog:
1368                 assert(_jitc->function == _jitc->functions.ptr + node->w.w);
1369                 if (_jitc->again) {
1370                     for (temp = undo.node->next;
1371                          temp != node; temp = temp->next) {
1372                         if (temp->code == jit_code_label ||
1373                             temp->code == jit_code_epilog)
1374                             temp->flag &= ~jit_flag_patch;
1375                     }
1376                     temp->flag &= ~jit_flag_patch;
1377                     node = undo.node;
1378                     _jit->pc.w = undo.word;
1379 #if DEVEL_DISASSEMBLER
1380                     prevw = undo.prevw;
1381 #endif
1382                     _jitc->patches.offset = undo.patch_offset;
1383                     goto restart_function;
1384                 }
1385                 /* remember label is defined */
1386                 node->flag |= jit_flag_patch;
1387                 node->u.w = _jit->pc.w;
1388                 epilog(node);
1389                 _jitc->function = NULL;
1390                 break;
1391             case jit_code_va_start:
1392                 vastart(rn(node->u.w));
1393                 break;
1394             case jit_code_va_arg:
1395                 vaarg(rn(node->u.w), rn(node->v.w));
1396                 break;
1397             case jit_code_va_arg_d:
1398                 vaarg_d(rn(node->u.w), rn(node->v.w));
1399                 break;
1400             case jit_code_live:
1401             case jit_code_arg:                  case jit_code_ellipsis:
1402             case jit_code_va_push:
1403             case jit_code_allocai:              case jit_code_allocar:
1404             case jit_code_arg_f:                case jit_code_arg_d:
1405             case jit_code_va_end:
1406             case jit_code_ret:
1407             case jit_code_retr:                 case jit_code_reti:
1408             case jit_code_retr_f:               case jit_code_reti_f:
1409             case jit_code_retr_d:               case jit_code_reti_d:
1410             case jit_code_getarg_c:             case jit_code_getarg_uc:
1411             case jit_code_getarg_s:             case jit_code_getarg_us:
1412             case jit_code_getarg_i:
1413             case jit_code_getarg_f:             case jit_code_getarg_d:
1414             case jit_code_putargr:              case jit_code_putargi:
1415             case jit_code_putargr_f:            case jit_code_putargi_f:
1416             case jit_code_putargr_d:            case jit_code_putargi_d:
1417             case jit_code_pushargr:             case jit_code_pushargi:
1418             case jit_code_pushargr_f:           case jit_code_pushargi_f:
1419             case jit_code_pushargr_d:           case jit_code_pushargi_d:
1420             case jit_code_retval_c:             case jit_code_retval_uc:
1421             case jit_code_retval_s:             case jit_code_retval_us:
1422             case jit_code_retval_i:
1423             case jit_code_retval_f:             case jit_code_retval_d:
1424             case jit_code_prepare:
1425             case jit_code_finishr:              case jit_code_finishi:
1426                 break;
1427             default:
1428                 abort();
1429         }
1430         jit_regarg_clr(node, value);
1431         assert(_jitc->regarg == 0 && _jitc->synth == 0);
1432         /* update register live state */
1433         jit_reglive(node);
1434     }
1435 #undef case_brf
1436 #undef case_brw
1437 #undef case_brr
1438 #undef case_wrr
1439 #undef case_rrf
1440 #undef case_rrrw
1441 #undef case_rrw
1442 #undef case_rrrr
1443 #undef case_rrr
1444 #undef case_wr
1445 #undef case_rw
1446 #undef case_rr
1447
1448     for (offset = 0; offset < _jitc->patches.offset; offset++) {
1449         node = _jitc->patches.ptr[offset].node;
1450         word = node->code == jit_code_movi ? node->v.n->u.w : node->u.n->u.w;
1451         patch_at(_jitc->patches.ptr[offset].inst, word);
1452     }
1453
1454     jit_flush(_jit->code.ptr, _jit->pc.uc);
1455
1456     return (_jit->code.ptr);
1457 }
1458
1459 #define CODE                            1
1460 #  include "jit_hppa-cpu.c"
1461 #  include "jit_hppa-fpu.c"
1462 #undef CODE
1463
1464 void
1465 jit_flush(void *fptr, void *tptr)
1466 {
1467     jit_word_t          f, t, s;
1468     s = sysconf(_SC_PAGE_SIZE);
1469     f = (jit_word_t)fptr & -s;
1470     t = (((jit_word_t)tptr) + s - 1) & -s;
1471 #if defined(__hppa)
1472 /* --- parisc2.0.pdf ---
1473                 Programming Note
1474
1475 The minimum spacing that is guaranteed to work for "self-modifying code" is
1476 shown in the code segment below. Since instruction prefetching is permitted,
1477 any data cache flushes must be separated from any instruction cache flushes
1478 by a SYNC. This will ensure that the "new" instruction will be written to
1479 memory prior to any attempts at prefetching it as an instruction.
1480
1481         LDIL    l%newinstr,rnew
1482         LDW     r%newinstr(0,rnew),temp
1483         LDIL    l%instr,rinstr
1484         STW     temp,r%instr(0,rinstr)
1485         FDC     r%instr(0,rinstr)
1486         SYNC
1487         FIC     r%instr(rinstr)
1488         SYNC
1489         instr   ...
1490         (at least seven instructions)
1491
1492 This sequence assumes a uniprocessor system. In a multiprocessor system,
1493 software must ensure no processor is executing code which is in the process
1494 of being modified.
1495 */
1496
1497 /*
1498   Adapted from ffcall/trampoline/cache-hppa.c:__TR_clear_cache to
1499 loop over addresses as it is unlikely from and to addresses would fit in
1500 at most two cachelines.
1501   FIXME A cache line can be 16, 32, or 64 bytes.
1502  */
1503     /*
1504      * Copyright 1995-1997 Bruno Haible, <bruno@clisp.org>
1505      *
1506      * This is free software distributed under the GNU General Public Licence
1507      * described in the file COPYING. Contact the author if you don't have this
1508      * or can't live with it. There is ABSOLUTELY NO WARRANTY, explicit or implied,
1509      * on this software.
1510      */
1511     {
1512         jit_word_t      n = f + 32;
1513         register int    u, v;
1514         for (; f <= t; n = f + 32, f += 64) {
1515             asm volatile ("fdc 0(0,%0)"
1516                           "\n\t" "fdc 0(0,%1)"
1517                           "\n\t" "sync"
1518                           :
1519                           : "r" (f), "r" (n)
1520                           );
1521             asm volatile ("mfsp %%sr0,%1"
1522                           "\n\t" "ldsid (0,%4),%0"
1523                           "\n\t" "mtsp %0,%%sr0"
1524                           "\n\t" "fic 0(%%sr0,%2)"
1525                           "\n\t" "fic 0(%%sr0,%3)"
1526                           "\n\t" "sync"
1527                           "\n\t" "mtsp %1,%%sr0"
1528                           "\n\t" "nop"
1529                           "\n\t" "nop"
1530                           "\n\t" "nop"
1531                           "\n\t" "nop"
1532                           "\n\t" "nop"
1533                           "\n\t" "nop"
1534                           : "=r" (u), "=r" (v)
1535                           : "r" (f), "r" (n), "r" (f)
1536                           );
1537         }
1538     }
1539 #else
1540     /* This is supposed to work but appears to fail on multiprocessor systems */
1541     __clear_cache((void *)f, (void *)t);
1542 #endif
1543 }
1544
1545 void
1546 _emit_ldxi(jit_state_t *_jit, jit_gpr_t r0, jit_gpr_t r1, jit_word_t i0)
1547 {
1548     ldxi(rn(r0), rn(r1), i0);
1549 }
1550
1551 void
1552 _emit_stxi(jit_state_t *_jit, jit_word_t i0, jit_gpr_t r0, jit_gpr_t r1)
1553 {
1554     stxi(i0, rn(r0), rn(r1));
1555 }
1556
1557 void
1558 _emit_ldxi_d(jit_state_t *_jit, jit_fpr_t r0, jit_gpr_t r1, jit_word_t i0)
1559 {
1560     ldxi_d(rn(r0), rn(r1), i0);
1561 }
1562
1563 void
1564 _emit_stxi_d(jit_state_t *_jit, jit_word_t i0, jit_gpr_t r0, jit_fpr_t r1)
1565 {
1566     stxi_d(i0, rn(r0), rn(r1));
1567 }
1568
1569 static void
1570 _patch(jit_state_t *_jit, jit_word_t instr, jit_node_t *node)
1571 {
1572     jit_int32_t         flag;
1573
1574     assert(node->flag & jit_flag_node);
1575     if (node->code == jit_code_movi)
1576         flag = node->v.n->flag;
1577     else
1578         flag = node->u.n->flag;
1579     assert(!(flag & jit_flag_patch));
1580     if (_jitc->patches.offset >= _jitc->patches.length) {
1581         jit_realloc((jit_pointer_t *)&_jitc->patches.ptr,
1582                     _jitc->patches.length * sizeof(jit_patch_t),
1583                     (_jitc->patches.length + 1024) * sizeof(jit_patch_t));
1584         _jitc->patches.length += 1024;
1585     }
1586     _jitc->patches.ptr[_jitc->patches.offset].inst = instr;
1587     _jitc->patches.ptr[_jitc->patches.offset].node = node;
1588     ++_jitc->patches.offset;
1589 }