2 * Copyright (C) 2012-2022 Free Software Foundation, Inc.
4 * This file is part of GNU lightning.
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)
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.
17 * Paulo Cesar Pereira de Andrade
20 #include <lightning.h>
21 #include <lightning/jit_private.h>
23 # include <sys/mman.h>
30 # define MAP_ANON MAP_ANONYMOUS
31 # ifndef MAP_ANONYMOUS
32 # define MAP_ANONYMOUS 0
36 #define jit_regload_reload 0 /* convert to reload */
37 #define jit_regload_delete 1 /* just remove node */
38 #define jit_regload_isdead 2 /* delete and unset live bit */
43 static jit_word_t hash_data(const void*, jit_word_t);
45 #define new_pool() _new_pool(_jit)
46 static void _new_pool(jit_state_t*);
48 #define new_node(u) _new_node(_jit, u)
49 static jit_node_t *_new_node(jit_state_t*, jit_code_t);
51 #define link_node(u) _link_node(_jit, u)
52 static inline jit_node_t *_link_node(jit_state_t*, jit_node_t*);
54 #define del_node(u, v) _del_node(_jit, u, v)
55 static inline void _del_node(jit_state_t*, jit_node_t*, jit_node_t*);
57 #define free_node(u) _free_node(_jit, u)
58 static inline void _free_node(jit_state_t*, jit_node_t*);
60 #define del_label(u, v) _del_label(_jit, u, v)
61 static void _del_label(jit_state_t*, jit_node_t*, jit_node_t*);
63 #define jit_dataset() _jit_dataset(_jit)
65 _jit_dataset(jit_state_t *_jit);
67 #define block_update_set(block, target) _block_update_set(_jit, block, target)
68 static jit_bool_t _block_update_set(jit_state_t*, jit_block_t*, jit_block_t*);
70 #define propagate_backward(block) _propagate_backward(_jit, block)
71 static void _propagate_backward(jit_state_t*, jit_block_t*);
73 #define check_block_again() _check_block_again(_jit)
74 static jit_bool_t _check_block_again(jit_state_t*);
76 #define do_setup() _do_setup(_jit)
77 static void _do_setup(jit_state_t*);
79 #define jit_setup(block) _jit_setup(_jit, block)
81 _jit_setup(jit_state_t *_jit, jit_block_t *block);
83 #define do_follow(always) _do_follow(_jit, always)
84 static void _do_follow(jit_state_t*, jit_bool_t);
86 #define jit_follow(block) _jit_follow(_jit, block)
88 _jit_follow(jit_state_t *_jit, jit_block_t *block);
90 #define jit_update(node, live, mask) _jit_update(_jit, node, live, mask)
92 _jit_update(jit_state_t *_jit, jit_node_t *node,
93 jit_regset_t *live, jit_regset_t *mask);
95 #define thread_jumps() _thread_jumps(_jit)
97 _thread_jumps(jit_state_t *_jit);
99 #define sequential_labels() _sequential_labels(_jit)
101 _sequential_labels(jit_state_t *_jit);
103 #define split_branches() _split_branches(_jit)
105 _split_branches(jit_state_t *_jit);
107 #define shortcut_jump(prev, node) _shortcut_jump(_jit, prev, node)
109 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
111 #define redundant_jump(prev, node) _redundant_jump(_jit, prev, node)
113 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
116 reverse_jump_code(jit_code_t code);
118 #define reverse_jump(prev, node) _reverse_jump(_jit, prev, node)
120 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
122 #define redundant_store(node, jump) _redundant_store(_jit, node, jump)
124 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump);
126 #define simplify_movr(p, n, k, s) _simplify_movr(_jit, p, n, k, s)
128 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
129 jit_int32_t kind, jit_int32_t size);
131 #define simplify_movi(p, n, k, s) _simplify_movi(_jit, p, n, k, s)
133 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
134 jit_int32_t kind, jit_int32_t size);
136 #define simplify_ldxi(prev, node) _simplify_ldxi(_jit, prev, node)
138 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
140 #define simplify_stxi(prev, node) _simplify_stxi(_jit, prev, node)
142 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
144 #define simplify_spill(node, regno) _simplify_spill(_jit, node, regno)
146 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
148 #define simplify() _simplify(_jit)
150 _simplify(jit_state_t *_jit);
152 #define jit_reg_undef -1
153 #define jit_reg_static 0
154 #define jit_reg_change 1
155 #define register_change_p(n, l, r) _register_change_p(_jit, n, l, r)
157 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
160 #define spill_reglive_p(node, regno) _spill_reglive_p(_jit, node, regno)
162 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
164 #define patch_registers() _patch_registers(_jit)
166 _patch_registers(jit_state_t *_jit);
168 #define patch_register(n,l,r,p) _patch_register(_jit,n,l,r,p)
170 _patch_register(jit_state_t *jit, jit_node_t *node, jit_node_t *link,
171 jit_int32_t regno, jit_int32_t patch);
184 init_jit(const char *progname)
187 jit_init_debug(progname);
199 _jit_get_reg(jit_state_t *_jit, jit_int32_t regspec)
204 spec = regspec & ~(jit_class_chk|jit_class_nospill);
205 if (spec & jit_class_named) {
206 regno = jit_regno(spec);
207 if (jit_regset_tstbit(&_jitc->regsav, regno))
208 /* fail if register is spilled */
210 if (jit_regset_tstbit(&_jitc->regarg, regno))
211 /* fail if register is an argument to current instruction */
213 if (jit_regset_tstbit(&_jitc->reglive, regno)) {
214 if (regspec & jit_class_nospill)
215 /* fail if register is live and should not spill/reload */
219 jit_regset_setbit(&_jitc->regarg, regno);
223 assert(jit_class(spec) != 0);
226 /* search for a free register matching spec */
227 for (regno = 0; regno < _jitc->reglen; regno++) {
228 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
229 !jit_regset_tstbit(&_jitc->regarg, regno) &&
230 !jit_regset_tstbit(&_jitc->reglive, regno))
234 /* search for a register matching spec that is not an argument
235 * for the current instruction */
236 for (regno = 0; regno < _jitc->reglen; regno++) {
237 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
238 !jit_regset_tstbit(&_jitc->regsav, regno) &&
239 !jit_regset_tstbit(&_jitc->regarg, regno) &&
240 !(regspec & jit_class_nospill)) {
242 assert(_jitc->function != NULL);
243 if (spec & jit_class_gpr) {
244 if (!_jitc->function->regoff[regno]) {
245 _jitc->function->regoff[regno] =
246 jit_allocai(sizeof(jit_word_t));
250 /* emit_stxi must not need temporary registers */
251 assert(!_jitc->getreg);
254 emit_stxi(_jitc->function->regoff[regno], JIT_FP, regno);
260 if (!_jitc->function->regoff[regno]) {
261 _jitc->function->regoff[regno] =
262 jit_allocai(sizeof(jit_float64_t));
266 /* emit_stxi must not need temporary registers */
267 assert(!_jitc->getreg);
270 emit_stxi_d(_jitc->function->regoff[regno], JIT_FP, regno);
275 jit_regset_setbit(&_jitc->regsav, regno);
277 jit_regset_setbit(&_jitc->regarg, regno);
278 if (jit_class(_rvs[regno].spec) & jit_class_sav) {
279 /* if will modify callee save registers without a
280 * function prolog, better patch this assertion */
281 assert(_jitc->function != NULL);
282 if (!jit_regset_tstbit(&_jitc->function->regset, regno)) {
283 jit_regset_setbit(&_jitc->function->regset, regno);
292 /* nospill hint only valid during emit" */
293 assert(!(regspec & jit_class_nospill));
294 for (regno = 0; regno < _jitc->reglen; regno++) {
295 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
296 !jit_regset_tstbit(&_jitc->regsav, regno) &&
297 !jit_regset_tstbit(&_jitc->regarg, regno)) {
298 jit_regset_setbit(&_jitc->regarg, regno);
299 jit_regset_setbit(&_jitc->regsav, regno);
301 return (jit_regno_patch|regno);
306 /* Out of hardware registers */
308 assert(regspec & jit_class_chk);
313 _jit_unget_reg(jit_state_t *_jit, jit_int32_t regno)
315 regno = jit_regno(regno);
316 if (jit_regset_tstbit(&_jitc->regsav, regno)) {
319 /* emit_ldxi must not need a temporary register */
320 assert(!_jitc->getreg);
323 if (jit_class(_rvs[regno].spec) & jit_class_gpr)
324 emit_ldxi(regno, JIT_FP, _jitc->function->regoff[regno]);
326 emit_ldxi_d(regno, JIT_FP, _jitc->function->regoff[regno]);
328 /* emit_ldxi must not need a temporary register */
334 jit_regset_clrbit(&_jitc->regsav, regno);
336 #if defined(jit_carry)
337 assert((regno == jit_carry /*&& _NOREG != jit_carry*/) ||
338 jit_regset_tstbit(&_jitc->regarg, regno) != 0);
340 assert(jit_regset_tstbit(&_jitc->regarg, regno) != 0);
342 jit_regset_clrbit(&_jitc->regarg, regno);
346 _jit_callee_save_p(jit_state_t *_jit, jit_int32_t regno)
348 assert(regno >= 0 && regno < JIT_NOREG);
349 return (!!(_rvs[regno].spec & jit_class_sav));
353 _jit_pointer_p(jit_state_t *_jit, jit_pointer_t address)
355 return ((jit_uint8_t *)address >= _jit->code.ptr &&
356 (jit_word_t)address < _jit->pc.w);
361 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
363 u->rl = ~v->rl; u->rh = ~v->rh;
364 u->fl = ~v->fl; u->fh = ~v->fh;
368 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
370 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
371 u->fl = v->fl & w->fl; u->fh = v->fh & w->fh;
375 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
377 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
378 u->fl = v->fl | w->fl; u->fh = v->fh | w->fh;
382 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
384 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
385 u->fl = v->fl ^ w->fl; u->fh = v->fh ^ w->fh;
389 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
391 u->rl = v->rl; u->rh = v->rh;
392 u->fl = v->fl; u->fh = v->fh;
396 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
398 jit_bool_t w = !!(v & (v - 1));
400 assert(v >= 0 && v <= 256);
402 u->rl = u->rh = u->fl = u->fh = -1LL;
404 u->rl = w ? (1LL << v) - 1 : -1LL;
405 u->rh = u->fl = u->fh = 0;
409 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
413 u->rl = u->rh = -1LL;
414 u->fl = w ? (1LL << (v - 128)) - 1 : -1LL;
418 u->rl = u->rh = u->fl = -1LL;
419 u->fh = w ? (1LL << (v - 128)) - 1 : -1LL;
424 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
426 return !((u->rl == v && u->rh == 0 && u->fl == 0 && u->fh == 0));
430 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
433 u->rh = u->fl = u->fh = 0;
437 jit_regset_set_p(jit_regset_t *u)
439 return (u->rl || u->rh || u->fl || u->fh);
443 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
445 assert(bit >= 0 && bit <= 255);
447 set->rl &= ~(1LL << bit);
449 set->rh &= ~(1LL << (bit - 64));
451 set->fl &= ~(1LL << (bit - 128));
453 set->fh &= ~(1LL << (bit - 192));
457 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
459 assert(bit >= 0 && bit <= 255);
461 set->rl |= 1LL << bit;
463 set->rh |= 1LL << (bit - 64);
465 set->fl |= 1LL << (bit - 128);
467 set->fh |= 1LL << (bit - 192);
471 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
473 assert(bit >= 0 && bit <= 255);
475 return (!!(set->rl & (1LL << bit)));
477 return (!!(set->rh & (1LL << (bit - 64))));
479 return (!!(set->fl & (1LL << (bit - 128))));
480 return (!!(set->fh & (1LL << (bit - 192))));
484 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
486 assert(offset >= 0 && offset <= 255);
487 for (; offset < 64; offset++) {
488 if (set->rl & (1LL << offset))
491 for (; offset < 128; offset++) {
492 if (set->rh & (1LL << (offset - 64)))
495 for (; offset < 192; offset++) {
496 if (set->fl & (1LL << (offset - 128)))
499 for (; offset < 256; offset++) {
500 if (set->fh & (1LL << (offset - 192)))
506 #elif __sparc__ && __WORDSIZE == 64
508 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
510 u->rl = ~v->rl; u->rh = ~v->rh;
514 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
516 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
520 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
522 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
526 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
528 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
532 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
534 u->rl = v->rl; u->rh = v->rh;
538 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
540 jit_bool_t w = !!(v & (v - 1));
542 assert(v >= 0 && v <= 128);
544 u->rl = u->rh = -1LL;
546 u->rl = w ? (1LL << v) - 1 : -1LL;
551 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
556 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
558 return !((u->rl == v && u->rh == 0));
562 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
569 jit_regset_set_p(jit_regset_t *u)
571 return (u->rl || u->rh);
575 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
577 assert(bit >= 0 && bit <= 128);
579 set->rl &= ~(1LL << bit);
581 set->rh &= ~(1LL << (bit - 64));
585 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
587 assert(bit >= 0 && bit <= 127);
589 set->rl |= 1LL << bit;
591 set->rh |= 1LL << (bit - 64);
595 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
597 assert(bit >= 0 && bit <= 127);
599 return (!!(set->rl & (1LL << bit)));
601 return (!!(set->rh & (1LL << (bit - 64))));
605 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
607 assert(offset >= 0 && offset <= 127);
608 for (; offset < 64; offset++) {
609 if (set->rl & (1LL << offset))
612 for (; offset < 128; offset++) {
613 if (set->rh & (1LL << (offset - 64)))
621 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
624 assert(offset >= 0 && offset <= 63);
625 if ((mask = *set >> offset)) {
638 _jit_save(jit_state_t *_jit, jit_int32_t reg)
640 reg = jit_regno(reg);
641 assert(!_jitc->realize);
642 _jitc->spill[reg] = jit_new_node_w(jit_code_save, reg);
646 _jit_load(jit_state_t *_jit, jit_int32_t reg)
650 reg = jit_regno(reg);
651 assert(!_jitc->realize);
652 assert(_jitc->spill[reg] != NULL);
653 node = jit_new_node_w(jit_code_load, reg);
654 /* create a path to flag the save/load is not required */
655 node->link = _jitc->spill[reg];
656 node->link->link = node;
657 _jitc->spill[reg] = NULL;
661 hash_data(const void *data, jit_word_t length)
663 const jit_uint8_t *ptr;
665 for (i = key = 0, ptr = data; i < length; i++)
666 key = (key << (key & 1)) ^ ptr[i];
671 _jit_address(jit_state_t *_jit, jit_node_t *node)
674 assert(node != NULL &&
675 /* If a node type that is documented to be a fixed marker */
676 (node->code == jit_code_note || node->code == jit_code_name ||
677 /* If another special fixed marker, returned by jit_indirect() */
678 (node->code == jit_code_label && (node->flag & jit_flag_use) != 0)));
679 return ((jit_pointer_t)node->u.w);
683 _jit_data(jit_state_t *_jit, const void *data,
684 jit_word_t length, jit_int32_t align)
689 assert(!_jitc->realize);
691 /* Ensure there is space even if asking for a duplicate */
692 if (((_jitc->data.offset + 7) & -8) + length > _jit->data.length) {
695 size = (_jit->data.length + length + 4096) & - 4095;
696 assert(size >= _jit->data.length);
697 if (_jitc->data.ptr == NULL)
698 jit_alloc((jit_pointer_t *)&_jitc->data.ptr, size);
700 jit_realloc((jit_pointer_t *)&_jitc->data.ptr,
701 _jit->data.length, size);
702 _jit->data.length = size;
704 if (_jitc->data.table == NULL)
705 jit_alloc((jit_pointer_t *)&_jitc->data.table,
706 (_jitc->data.size = 16) * sizeof(jit_node_t*));
708 key = hash_data(data, length) & (_jitc->data.size - 1);
709 node = _jitc->data.table[key];
710 for (; node; node = node->next) {
711 if (node->v.w == length &&
712 memcmp(_jitc->data.ptr + node->u.w, data, length) == 0)
717 node = jit_new_node_no_link(jit_code_data);
724 _jitc->data.offset = (_jitc->data.offset + 1) & -2;
727 _jitc->data.offset = (_jitc->data.offset + 3) & -4;
730 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
733 node->u.w = _jitc->data.offset;
735 jit_memcpy(_jitc->data.ptr + _jitc->data.offset, data, length);
736 _jitc->data.offset += length;
738 node->next = _jitc->data.table[key];
739 _jitc->data.table[key] = node;
742 /* Rehash if more than 75% used table */
743 if (_jitc->data.count >
744 (_jitc->data.size >> 1) + (_jitc->data.size >> 2) &&
745 (_jitc->data.size << 1) > _jitc->data.size) {
751 jit_alloc((jit_pointer_t *)&hash,
752 (_jitc->data.size << 1) * sizeof(jit_node_t*));
753 for (i = 0; i < _jitc->data.size; i++) {
754 temp = _jitc->data.table[i];
755 for (; temp; temp = next) {
757 key = hash_data(_jitc->data.ptr + temp->u.w, temp->v.w) &
758 ((_jitc->data.size << 1) - 1);
759 temp->next = hash[key];
763 jit_free((jit_pointer_t *)&_jitc->data.table);
764 _jitc->data.table = hash;
765 _jitc->data.size <<= 1;
773 _new_pool(jit_state_t *_jit)
778 if (_jitc->pool.offset >= _jitc->pool.length) {
781 length = _jitc->pool.length + 16;
782 jit_realloc((jit_pointer_t *)&_jitc->pool.ptr,
783 _jitc->pool.length * sizeof(jit_node_t *),
784 length * sizeof(jit_node_t *));
785 _jitc->pool.length = length;
787 jit_alloc((jit_pointer_t *)(_jitc->pool.ptr + _jitc->pool.offset),
788 sizeof(jit_node_t) * 1024);
789 list = _jitc->pool.ptr[_jitc->pool.offset];
790 for (offset = 1; offset < 1024; offset++, list++)
791 list->next = list + 1;
792 list->next = _jitc->list;
793 _jitc->list = _jitc->pool.ptr[_jitc->pool.offset];
794 ++_jitc->pool.offset;
798 _new_node(jit_state_t *_jit, jit_code_t code)
802 if (_jitc->list == NULL)
805 _jitc->list = node->next;
807 node->flag |= jit_flag_synth;
814 static inline jit_node_t *
815 _link_node(jit_state_t *_jit, jit_node_t *node)
818 _jitc->tail->next = node;
821 return (_jitc->tail = node);
825 _del_node(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
828 assert(prev == _jitc->head);
829 _jitc->head = node->next;
832 prev->next = node->next;
833 memset(node, 0, sizeof(jit_node_t));
834 node->next = _jitc->list;
839 _free_node(jit_state_t *_jit, jit_node_t *node)
841 memset(node, 0, sizeof(jit_node_t));
842 node->next = _jitc->list;
847 _del_label(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
851 /* only allow call to del_label on linked labels */
852 block = _jitc->blocks.ptr + node->v.w;
853 assert(block->label == node);
855 /* del_label() should only be called when optimizing.
856 * This will leave an empty block index */
857 jit_regset_del(&block->reglive);
858 jit_regset_del(&block->regmask);
861 /* redundant, should be already true */
862 assert(node->link == NULL);
863 del_node(prev, node);
871 jit_alloc((jit_pointer_t *)&_jit, sizeof(jit_state_t));
872 jit_alloc((jit_pointer_t *)&_jitc, sizeof(jit_compiler_t));
873 jit_regset_new(&_jitc->regarg);
874 jit_regset_new(&_jitc->regsav);
875 jit_regset_new(&_jitc->reglive);
876 jit_regset_new(&_jitc->regmask);
880 jit_alloc((jit_pointer_t *)&_jitc->spill,
881 _jitc->reglen * sizeof(jit_node_t*));
882 jit_alloc((jit_pointer_t *)&_jitc->gen,
883 _jitc->reglen * sizeof(jit_int32_t));
884 jit_alloc((jit_pointer_t *)&_jitc->values,
885 _jitc->reglen * sizeof(jit_value_t));
887 jit_alloc((jit_pointer_t *)&_jitc->patches.ptr,
888 (_jitc->patches.length = 1024) * sizeof(jit_patch_t));
889 jit_alloc((jit_pointer_t *)&_jitc->functions.ptr,
890 (_jitc->functions.length = 16) * sizeof(jit_function_t));
891 jit_alloc((jit_pointer_t *)&_jitc->pool.ptr,
892 (_jitc->pool.length = 16) * sizeof(jit_node_t*));
893 jit_alloc((jit_pointer_t *)&_jitc->blocks.ptr,
894 (_jitc->blocks.length = 16) * sizeof(jit_block_t));
895 #if __arm__ && DISASSEMBLER
896 jit_alloc((jit_pointer_t *)&_jitc->data_info.ptr,
897 (_jitc->data_info.length = 1024) * sizeof(jit_data_info_t));
900 /* allocate at most one extra note in case jit_name() is
901 * never called, or called after adding at least one note */
902 _jit->note.length = 1;
903 _jitc->note.size = sizeof(jit_note_t);
909 _jit_clear_state(jit_state_t *_jit)
911 #if DEVEL_DISASSEMBLER
912 # define jit_really_clear_state() _jit_really_clear_state(_jit)
915 void _jit_really_clear_state(jit_state_t *_jit)
919 jit_function_t *function;
921 /* release memory not required at jit execution time and set
922 * pointers to NULL to explicitly know they are released */
923 _jitc->head = _jitc->tail = NULL;
925 jit_free((jit_pointer_t *)&_jitc->data.table);
926 _jitc->data.size = _jitc->data.count = 0;
928 jit_free((jit_pointer_t *)&_jitc->spill);
929 jit_free((jit_pointer_t *)&_jitc->gen);
930 jit_free((jit_pointer_t *)&_jitc->values);
932 jit_free((jit_pointer_t *)&_jitc->blocks.ptr);
934 jit_free((jit_pointer_t *)&_jitc->patches.ptr);
935 _jitc->patches.offset = _jitc->patches.length = 0;
937 for (offset = 0; offset < _jitc->functions.offset; offset++) {
938 function = _jitc->functions.ptr + offset;
939 jit_free((jit_pointer_t *)&function->regoff);
941 jit_free((jit_pointer_t *)&_jitc->functions.ptr);
942 _jitc->functions.offset = _jitc->functions.length = 0;
943 _jitc->function = NULL;
945 for (offset = 0; offset < _jitc->pool.offset; offset++)
946 jit_free((jit_pointer_t *)(_jitc->pool.ptr + offset));
947 jit_free((jit_pointer_t *)&_jitc->pool.ptr);
948 _jitc->pool.offset = _jitc->pool.length = 0;
951 _jitc->note.head = _jitc->note.tail =
952 _jitc->note.name = _jitc->note.note = NULL;
953 _jitc->note.base = NULL;
955 #if __arm__ && DISASSEMBLER
956 jit_free((jit_pointer_t *)&_jitc->data_info.ptr);
959 #if (__powerpc__ && _CALL_AIXDESC) || __ia64__
960 jit_free((jit_pointer_t *)&_jitc->prolog.ptr);
964 jit_regset_del(&_jitc->regs);
967 jit_free((jit_pointer_t *)&_jitc);
971 _jit_destroy_state(jit_state_t *_jit)
973 #if DEVEL_DISASSEMBLER
974 jit_really_clear_state();
977 if (!_jit->user_code)
978 munmap(_jit->code.ptr, _jit->code.length);
979 if (!_jit->user_data)
980 munmap(_jit->data.ptr, _jit->data.length);
982 jit_free((jit_pointer_t *)&_jit);
986 _jit_synth_inc(jit_state_t *_jit)
988 assert(_jitc->synth < 8);
993 _jit_new_node(jit_state_t *_jit, jit_code_t code)
995 assert(!_jitc->realize);
996 return (link_node(new_node(code)));
1000 _jit_new_node_no_link(jit_state_t *_jit, jit_code_t code)
1002 assert(!_jitc->realize);
1003 return (new_node(code));
1007 _jit_link_node(jit_state_t *_jit, jit_node_t *node)
1009 assert(!_jitc->realize);
1014 _jit_synth_dec(jit_state_t *_jit)
1016 assert(_jitc->synth > 0);
1021 _jit_new_node_w(jit_state_t *_jit, jit_code_t code,
1024 jit_node_t *node = new_node(code);
1025 assert(!_jitc->realize);
1027 return (link_node(node));
1031 _jit_new_node_f(jit_state_t *_jit, jit_code_t code,
1034 jit_node_t *node = new_node(code);
1035 assert(!_jitc->realize);
1037 return (link_node(node));
1041 _jit_new_node_d(jit_state_t *_jit, jit_code_t code,
1044 jit_node_t *node = new_node(code);
1045 assert(!_jitc->realize);
1047 return (link_node(node));
1051 _jit_new_node_p(jit_state_t *_jit, jit_code_t code,
1054 jit_node_t *node = new_node(code);
1055 assert(!_jitc->realize);
1057 return (link_node(node));
1061 _jit_new_node_ww(jit_state_t *_jit, jit_code_t code,
1062 jit_word_t u, jit_word_t v)
1064 jit_node_t *node = new_node(code);
1065 assert(!_jitc->realize);
1068 return (link_node(node));
1072 _jit_new_node_wp(jit_state_t *_jit, jit_code_t code,
1073 jit_word_t u, jit_pointer_t v)
1075 return (jit_new_node_ww(code, u, (jit_word_t)v));
1079 _jit_new_node_fp(jit_state_t *_jit, jit_code_t code,
1080 jit_float32_t u, jit_pointer_t v)
1082 jit_node_t *node = new_node(code);
1083 assert(!_jitc->realize);
1085 node->v.w = (jit_word_t)v;
1086 return (link_node(node));
1090 _jit_new_node_dp(jit_state_t *_jit, jit_code_t code,
1091 jit_float64_t u, jit_pointer_t v)
1093 jit_node_t *node = new_node(code);
1094 assert(!_jitc->realize);
1096 node->v.w = (jit_word_t)v;
1097 return (link_node(node));
1101 _jit_new_node_pw(jit_state_t *_jit, jit_code_t code,
1102 jit_pointer_t u, jit_word_t v)
1104 return (jit_new_node_ww(code, (jit_word_t)u, v));
1108 _jit_new_node_wf(jit_state_t *_jit, jit_code_t code,
1109 jit_word_t u, jit_float32_t v)
1111 jit_node_t *node = new_node(code);
1112 assert(!_jitc->realize);
1115 return (link_node(node));
1119 _jit_new_node_wd(jit_state_t *_jit, jit_code_t code,
1120 jit_word_t u, jit_float64_t v)
1122 jit_node_t *node = new_node(code);
1123 assert(!_jitc->realize);
1126 return (link_node(node));
1130 _jit_new_node_www(jit_state_t *_jit, jit_code_t code,
1131 jit_word_t u, jit_word_t v, jit_word_t w)
1133 jit_node_t *node = new_node(code);
1134 assert(!_jitc->realize);
1138 return (link_node(node));
1142 _jit_new_node_qww(jit_state_t *_jit, jit_code_t code,
1143 jit_int32_t l, jit_int32_t h,
1144 jit_word_t v, jit_word_t w)
1146 jit_node_t *node = new_node(code);
1147 assert(!_jitc->realize);
1153 return (link_node(node));
1157 _jit_new_node_wwq(jit_state_t *_jit, jit_code_t code,
1158 jit_word_t u, jit_word_t v,
1159 jit_int32_t l, jit_int32_t h)
1161 jit_node_t *node = new_node(code);
1162 assert(!_jitc->realize);
1167 return (link_node(node));
1171 _jit_new_node_wwf(jit_state_t *_jit, jit_code_t code,
1172 jit_word_t u, jit_word_t v, jit_float32_t w)
1174 jit_node_t *node = new_node(code);
1175 assert(!_jitc->realize);
1179 return (link_node(node));
1183 _jit_new_node_wwd(jit_state_t *_jit, jit_code_t code,
1184 jit_word_t u, jit_word_t v, jit_float64_t w)
1186 jit_node_t *node = new_node(code);
1187 assert(!_jitc->realize);
1191 return (link_node(node));
1195 _jit_new_node_pww(jit_state_t *_jit, jit_code_t code,
1196 jit_pointer_t u, jit_word_t v, jit_word_t w)
1198 jit_node_t *node = new_node(code);
1199 assert(!_jitc->realize);
1203 return (link_node(node));
1207 _jit_new_node_pwf(jit_state_t *_jit, jit_code_t code,
1208 jit_pointer_t u, jit_word_t v, jit_float32_t w)
1210 jit_node_t *node = new_node(code);
1211 assert(!_jitc->realize);
1215 return (link_node(node));
1219 _jit_new_node_pwd(jit_state_t *_jit, jit_code_t code,
1220 jit_pointer_t u, jit_word_t v, jit_float64_t w)
1222 jit_node_t *node = new_node(code);
1223 assert(!_jitc->realize);
1227 return (link_node(node));
1231 _jit_label(jit_state_t *_jit)
1235 if (!(node = _jitc->tail) || node->code != jit_code_label) {
1236 node = jit_forward();
1244 _jit_forward(jit_state_t *_jit)
1246 return (jit_new_node_no_link(jit_code_label));
1250 _jit_indirect(jit_state_t *_jit)
1255 node->flag |= jit_flag_use;
1261 _jit_link(jit_state_t *_jit, jit_node_t *node)
1265 assert((node->code == jit_code_label ||
1266 node->code == jit_code_prolog ||
1267 node->code == jit_code_epilog) && !node->next);
1268 jit_link_node(node);
1269 if (_jitc->blocks.offset >= _jitc->blocks.length) {
1272 length = _jitc->blocks.length + 16;
1273 jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr,
1274 _jitc->blocks.length * sizeof(jit_block_t),
1275 length * sizeof(jit_block_t));
1276 _jitc->blocks.length = length;
1278 block = _jitc->blocks.ptr + _jitc->blocks.offset;
1279 block->label = node;
1280 node->v.w = _jitc->blocks.offset;
1281 jit_regset_new(&block->reglive);
1282 jit_regset_new(&block->regmask);
1283 ++_jitc->blocks.offset;
1287 _jit_forward_p(jit_state_t *_jit, jit_node_t *node)
1289 return (node->code == jit_code_label && !node->next && node != _jitc->tail);
1293 _jit_indirect_p(jit_state_t *_jit, jit_node_t *node)
1295 return (node->code == jit_code_label && !!(node->flag & jit_flag_use));
1299 _jit_target_p(jit_state_t *_jit, jit_node_t *node)
1301 return (node->code == jit_code_label && !!node->link);
1305 _jit_prepare(jit_state_t *_jit)
1307 assert(_jitc->function != NULL);
1308 _jitc->function->call.call = jit_call_default;
1309 _jitc->function->call.argi =
1310 _jitc->function->call.argf =
1311 _jitc->function->call.size = 0;
1312 _jitc->prepare = jit_new_node(jit_code_prepare);
1316 _jit_patch(jit_state_t* _jit, jit_node_t *instr)
1320 if (!(label = _jitc->tail) || label->code != jit_code_label)
1321 label = jit_label();
1322 jit_patch_at(instr, label);
1326 _jit_classify(jit_state_t *_jit, jit_code_t code)
1331 case jit_code_data: case jit_code_save: case jit_code_load:
1332 case jit_code_name: case jit_code_label: case jit_code_note:
1333 case jit_code_prolog: case jit_code_ellipsis: case jit_code_va_push:
1334 case jit_code_epilog: case jit_code_ret: case jit_code_prepare:
1337 case jit_code_live: case jit_code_va_end:
1338 case jit_code_retr: case jit_code_retr_f: case jit_code_retr_d:
1339 case jit_code_pushargr: case jit_code_pushargr_f:
1340 case jit_code_pushargr_d:
1341 case jit_code_finishr: /* synthesized will set jit_cc_a0_jmp */
1342 mask = jit_cc_a0_reg;
1344 case jit_code_align: case jit_code_reti: case jit_code_pushargi:
1345 case jit_code_finishi: /* synthesized will set jit_cc_a0_jmp */
1346 mask = jit_cc_a0_int;
1348 case jit_code_reti_f: case jit_code_pushargi_f:
1349 mask = jit_cc_a0_flt;
1351 case jit_code_reti_d: case jit_code_pushargi_d:
1352 mask = jit_cc_a0_dbl;
1354 case jit_code_allocai:
1355 mask = jit_cc_a0_int|jit_cc_a1_int;
1357 case jit_code_arg: case jit_code_arg_f: case jit_code_arg_d:
1358 mask = jit_cc_a0_int|jit_cc_a0_arg;
1360 case jit_code_calli: case jit_code_jmpi:
1361 mask = jit_cc_a0_jmp;
1363 case jit_code_callr: case jit_code_jmpr:
1364 mask = jit_cc_a0_reg|jit_cc_a0_jmp;
1366 case jit_code_retval_c: case jit_code_retval_uc:
1367 case jit_code_retval_s: case jit_code_retval_us:
1368 case jit_code_retval_i: case jit_code_retval_ui:
1369 case jit_code_retval_l:
1370 case jit_code_retval_f: case jit_code_retval_d:
1371 case jit_code_va_start:
1372 mask = jit_cc_a0_reg|jit_cc_a0_chg;
1374 case jit_code_getarg_c: case jit_code_getarg_uc:
1375 case jit_code_getarg_s: case jit_code_getarg_us:
1376 case jit_code_getarg_i: case jit_code_getarg_ui:
1377 case jit_code_getarg_l:
1378 case jit_code_getarg_f: case jit_code_getarg_d:
1379 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_arg;
1381 case jit_code_putargr: case jit_code_putargr_f:
1382 case jit_code_putargr_d:
1383 mask = jit_cc_a0_reg|jit_cc_a1_arg;
1385 case jit_code_putargi:
1386 mask = jit_cc_a0_int|jit_cc_a1_arg;
1388 case jit_code_putargi_f:
1389 mask = jit_cc_a0_flt|jit_cc_a1_arg;
1391 case jit_code_putargi_d:
1392 mask = jit_cc_a0_dbl|jit_cc_a1_arg;
1394 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1395 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1396 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1397 case jit_code_ldi_d:
1398 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int;
1400 case jit_code_movi_f: case jit_code_movi_f_w:
1401 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_flt;
1403 case jit_code_movi_d: case jit_code_movi_d_w:
1404 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_dbl;
1406 case jit_code_movi_d_ww:
1407 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1410 case jit_code_negr: case jit_code_comr: case jit_code_movr:
1411 case jit_code_extr_c: case jit_code_extr_uc: case jit_code_extr_s:
1412 case jit_code_extr_us: case jit_code_extr_i: case jit_code_extr_ui:
1413 case jit_code_truncr_f_i: case jit_code_truncr_f_l:
1414 case jit_code_truncr_d_i: case jit_code_truncr_d_l:
1415 case jit_code_htonr_us: case jit_code_htonr_ui: case jit_code_htonr_ul:
1416 case jit_code_bswapr_us: case jit_code_bswapr_ui: case jit_code_bswapr_ul:
1417 case jit_code_ldr_c: case jit_code_ldr_uc:
1418 case jit_code_ldr_s: case jit_code_ldr_us: case jit_code_ldr_i:
1419 case jit_code_ldr_ui: case jit_code_ldr_l: case jit_code_negr_f:
1420 case jit_code_absr_f: case jit_code_sqrtr_f: case jit_code_movr_f:
1421 case jit_code_extr_f: case jit_code_extr_d_f: case jit_code_ldr_f:
1422 case jit_code_negr_d: case jit_code_absr_d: case jit_code_sqrtr_d:
1423 case jit_code_movr_d: case jit_code_extr_d: case jit_code_extr_f_d:
1424 case jit_code_ldr_d:
1425 case jit_code_movr_w_f: case jit_code_movr_f_w:
1426 case jit_code_movr_w_d: case jit_code_movr_d_w:
1427 case jit_code_va_arg: case jit_code_va_arg_d:
1428 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg;
1430 case jit_code_movr_d_ww:
1431 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1434 case jit_code_addi: case jit_code_addxi: case jit_code_addci:
1435 case jit_code_subi: case jit_code_subxi: case jit_code_subci:
1437 case jit_code_muli: case jit_code_divi: case jit_code_divi_u:
1438 case jit_code_remi: case jit_code_remi_u: case jit_code_andi:
1439 case jit_code_ori: case jit_code_xori: case jit_code_lshi:
1440 case jit_code_rshi: case jit_code_rshi_u: case jit_code_lti:
1441 case jit_code_lti_u: case jit_code_lei: case jit_code_lei_u:
1442 case jit_code_eqi: case jit_code_gei: case jit_code_gei_u:
1443 case jit_code_gti: case jit_code_gti_u: case jit_code_nei:
1444 case jit_code_ldxi_c: case jit_code_ldxi_uc: case jit_code_ldxi_s:
1445 case jit_code_ldxi_us: case jit_code_ldxi_i: case jit_code_ldxi_ui:
1446 case jit_code_ldxi_l: case jit_code_ldxi_f: case jit_code_ldxi_d:
1447 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_int;
1449 case jit_code_qmuli: case jit_code_qmuli_u:
1450 case jit_code_qdivi: case jit_code_qdivi_u:
1451 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1452 jit_cc_a1_reg|jit_cc_a2_int;
1454 case jit_code_addi_f: case jit_code_subi_f: case jit_code_rsbi_f:
1455 case jit_code_muli_f: case jit_code_divi_f: case jit_code_lti_f:
1456 case jit_code_lei_f: case jit_code_eqi_f: case jit_code_gei_f:
1457 case jit_code_gti_f: case jit_code_nei_f: case jit_code_unlti_f:
1458 case jit_code_unlei_f: case jit_code_uneqi_f: case jit_code_ungei_f:
1459 case jit_code_ungti_f: case jit_code_ltgti_f: case jit_code_ordi_f:
1460 case jit_code_unordi_f:
1461 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_flt;
1463 case jit_code_addi_d: case jit_code_subi_d: case jit_code_rsbi_d:
1464 case jit_code_muli_d: case jit_code_divi_d: case jit_code_lti_d:
1465 case jit_code_lei_d: case jit_code_eqi_d: case jit_code_gei_d:
1466 case jit_code_gti_d: case jit_code_nei_d: case jit_code_unlti_d:
1467 case jit_code_unlei_d: case jit_code_uneqi_d: case jit_code_ungei_d:
1468 case jit_code_ungti_d: case jit_code_ltgti_d: case jit_code_ordi_d:
1469 case jit_code_unordi_d:
1470 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_dbl;
1472 case jit_code_addr: case jit_code_addxr: case jit_code_addcr:
1473 case jit_code_subr: case jit_code_subxr: case jit_code_subcr:
1474 case jit_code_mulr: case jit_code_divr: case jit_code_divr_u:
1475 case jit_code_remr: case jit_code_remr_u: case jit_code_andr:
1476 case jit_code_orr: case jit_code_xorr: case jit_code_lshr:
1477 case jit_code_rshr: case jit_code_rshr_u: case jit_code_ltr:
1478 case jit_code_ltr_u: case jit_code_ler: case jit_code_ler_u:
1479 case jit_code_eqr: case jit_code_ger: case jit_code_ger_u:
1480 case jit_code_gtr: case jit_code_gtr_u: case jit_code_ner:
1481 case jit_code_ldxr_c: case jit_code_ldxr_uc: case jit_code_ldxr_s:
1482 case jit_code_ldxr_us: case jit_code_ldxr_i: case jit_code_ldxr_ui:
1483 case jit_code_ldxr_l: case jit_code_addr_f: case jit_code_subr_f:
1484 case jit_code_mulr_f: case jit_code_divr_f: case jit_code_ltr_f:
1485 case jit_code_ler_f: case jit_code_eqr_f: case jit_code_ger_f:
1486 case jit_code_gtr_f: case jit_code_ner_f: case jit_code_unltr_f:
1487 case jit_code_unler_f: case jit_code_uneqr_f: case jit_code_unger_f:
1488 case jit_code_ungtr_f: case jit_code_ltgtr_f: case jit_code_ordr_f:
1489 case jit_code_unordr_f: case jit_code_ldxr_f: case jit_code_addr_d:
1490 case jit_code_subr_d: case jit_code_mulr_d: case jit_code_divr_d:
1491 case jit_code_ltr_d: case jit_code_ler_d: case jit_code_eqr_d:
1492 case jit_code_ger_d: case jit_code_gtr_d: case jit_code_ner_d:
1493 case jit_code_unltr_d: case jit_code_unler_d: case jit_code_uneqr_d:
1494 case jit_code_unger_d: case jit_code_ungtr_d: case jit_code_ltgtr_d:
1495 case jit_code_ordr_d: case jit_code_unordr_d: case jit_code_ldxr_d:
1496 case jit_code_movr_ww_d:
1497 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_reg;
1499 case jit_code_qmulr: case jit_code_qmulr_u:
1500 case jit_code_qdivr: case jit_code_qdivr_u:
1501 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1502 jit_cc_a1_reg|jit_cc_a2_reg;
1504 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1505 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1506 mask = jit_cc_a0_int|jit_cc_a1_reg;
1508 case jit_code_blti: case jit_code_blti_u: case jit_code_blei:
1509 case jit_code_blei_u: case jit_code_beqi: case jit_code_bgei:
1510 case jit_code_bgei_u: case jit_code_bgti: case jit_code_bgti_u:
1511 case jit_code_bnei: case jit_code_bmsi: case jit_code_bmci:
1512 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_int;
1514 case jit_code_blti_f: case jit_code_blei_f: case jit_code_beqi_f:
1515 case jit_code_bgei_f: case jit_code_bgti_f: case jit_code_bnei_f:
1516 case jit_code_bunlti_f: case jit_code_bunlei_f: case jit_code_buneqi_f:
1517 case jit_code_bungei_f: case jit_code_bungti_f: case jit_code_bltgti_f:
1518 case jit_code_bordi_f: case jit_code_bunordi_f:
1519 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_flt;
1521 case jit_code_blti_d: case jit_code_blei_d: case jit_code_beqi_d:
1522 case jit_code_bgei_d: case jit_code_bgti_d: case jit_code_bnei_d:
1523 case jit_code_bunlti_d: case jit_code_bunlei_d: case jit_code_buneqi_d:
1524 case jit_code_bungei_d: case jit_code_bungti_d: case jit_code_bltgti_d:
1525 case jit_code_bordi_d: case jit_code_bunordi_d:
1526 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_dbl;
1528 case jit_code_allocar: /* synthesized instructions make it
1529 * equivalent to jit_cc_a0_chg */
1530 case jit_code_str_c: case jit_code_str_s: case jit_code_str_i:
1531 case jit_code_str_l: case jit_code_str_f: case jit_code_str_d:
1532 mask = jit_cc_a0_reg|jit_cc_a1_reg;
1534 case jit_code_stxi_c: case jit_code_stxi_s: case jit_code_stxi_i:
1535 case jit_code_stxi_l: case jit_code_stxi_f: case jit_code_stxi_d:
1536 mask = jit_cc_a0_int|jit_cc_a1_reg|jit_cc_a2_reg;
1538 case jit_code_bltr: case jit_code_bltr_u: case jit_code_bler:
1539 case jit_code_bler_u: case jit_code_beqr: case jit_code_bger:
1540 case jit_code_bger_u: case jit_code_bgtr: case jit_code_bgtr_u:
1541 case jit_code_bner: case jit_code_bmsr: case jit_code_bmcr:
1542 case jit_code_bltr_f: case jit_code_bler_f: case jit_code_beqr_f:
1543 case jit_code_bger_f: case jit_code_bgtr_f: case jit_code_bner_f:
1544 case jit_code_bunltr_f: case jit_code_bunler_f: case jit_code_buneqr_f:
1545 case jit_code_bunger_f: case jit_code_bungtr_f: case jit_code_bltgtr_f:
1546 case jit_code_bordr_f: case jit_code_bunordr_f:case jit_code_bltr_d:
1547 case jit_code_bler_d: case jit_code_beqr_d: case jit_code_bger_d:
1548 case jit_code_bgtr_d: case jit_code_bner_d: case jit_code_bunltr_d:
1549 case jit_code_bunler_d: case jit_code_buneqr_d: case jit_code_bunger_d:
1550 case jit_code_bungtr_d: case jit_code_bltgtr_d: case jit_code_bordr_d:
1551 case jit_code_bunordr_d:
1552 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_reg;
1554 case jit_code_boaddi: case jit_code_boaddi_u: case jit_code_bxaddi:
1555 case jit_code_bxaddi_u: case jit_code_bosubi: case jit_code_bosubi_u:
1556 case jit_code_bxsubi: case jit_code_bxsubi_u:
1557 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_int;
1559 case jit_code_stxr_c: case jit_code_stxr_s: case jit_code_stxr_i:
1560 case jit_code_stxr_l: case jit_code_stxr_f: case jit_code_stxr_d:
1561 mask = jit_cc_a0_reg|jit_cc_a1_reg|jit_cc_a2_reg;
1563 case jit_code_boaddr: case jit_code_boaddr_u: case jit_code_bxaddr:
1564 case jit_code_bxaddr_u: case jit_code_bosubr: case jit_code_bosubr_u:
1565 case jit_code_bxsubr: case jit_code_bxsubr_u:
1566 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_reg;
1568 case jit_code_movnr: case jit_code_movzr:
1569 mask = jit_cc_a0_reg|jit_cc_a0_cnd|jit_cc_a1_reg|jit_cc_a2_reg;
1572 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|
1573 jit_cc_a2_reg|jit_cc_a2_rlh;
1576 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int|
1577 jit_cc_a2_reg|jit_cc_a2_rlh;
1587 _jit_patch_abs(jit_state_t *_jit, jit_node_t *instr, jit_pointer_t address)
1591 switch (instr->code) {
1592 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1593 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1594 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1595 case jit_code_ldi_d:
1596 instr->v.p = address;
1598 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1599 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1600 instr->u.p = address;
1603 mask = jit_classify(instr->code);
1604 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1605 instr->u.p = address;
1610 _jit_patch_at(jit_state_t *_jit, jit_node_t *instr, jit_node_t *label)
1614 assert(!(instr->flag & jit_flag_node));
1615 instr->flag |= jit_flag_node;
1616 switch (instr->code) {
1618 assert(label->code == jit_code_label ||
1619 label->code == jit_code_data);
1621 if (label->code == jit_code_data)
1622 instr->flag |= jit_flag_data;
1625 assert(label->code == jit_code_label ||
1626 label->code == jit_code_epilog);
1630 mask = jit_classify(instr->code);
1631 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1632 assert(label->code == jit_code_label);
1636 /* link field is used as list of nodes associated with a given label */
1637 instr->link = label->link;
1638 label->link = instr;
1642 _do_setup(jit_state_t *_jit)
1647 /* create initial mapping of live register values
1648 * at the start of a basic block */
1649 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1650 block = _jitc->blocks.ptr + offset;
1651 if (!block->label || block->label->code == jit_code_epilog)
1658 _block_update_set(jit_state_t *_jit,
1659 jit_block_t *block, jit_block_t *target)
1661 jit_regset_t regmask;
1663 jit_regset_ior(®mask, &block->reglive, &target->reglive);
1664 jit_regset_and(®mask, ®mask, &block->regmask);
1665 if (jit_regset_set_p(®mask)) {
1666 jit_regset_ior(&block->reglive, &block->reglive, ®mask);
1667 jit_regset_and(®mask, &block->reglive, &block->regmask);
1668 jit_regset_com(®mask, ®mask);
1669 jit_regset_and(&block->regmask, &block->regmask, ®mask);
1677 _propagate_backward(jit_state_t *_jit, jit_block_t *block)
1682 for (offset = block->label->v.w - 1;
1683 offset >= 0; --offset) {
1684 prev = _jitc->blocks.ptr + offset;
1685 if (!block_update_set(prev, block) ||
1686 !(prev->label->flag & jit_flag_head))
1692 _check_block_again(jit_state_t *_jit)
1696 jit_node_t *node, *label;
1697 jit_block_t *block, *target;
1700 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1701 block = _jitc->blocks.ptr + offset;
1707 /* If no block changed state */
1714 for (node = _jitc->head; node; node = node->next) {
1715 /* Special jumps that match jit_cc_a0_jmp */
1716 if (node->code == jit_code_calli || node->code == jit_code_callr)
1719 /* Remember current label */
1720 if (node->code == jit_code_label ||
1721 node->code == jit_code_prolog ||
1722 node->code == jit_code_epilog) {
1724 /* If previous block does not pass through */
1725 if (!(node->flag & jit_flag_head))
1728 target = _jitc->blocks.ptr + node->v.w;
1729 if (block && target->again && block_update_set(block, target)) {
1730 propagate_backward(block);
1735 /* If not the first jmpi */
1737 /* If a jump to dynamic address or if a jump to raw address */
1738 if (!(jit_classify(node->code) & jit_cc_a0_jmp) ||
1739 !(node->flag & jit_flag_node))
1742 /* Mark predecessor needs updating due to target change */
1743 target = _jitc->blocks.ptr + label->v.w;
1744 if (target->again && block_update_set(block, target)) {
1745 propagate_backward(block);
1757 _do_follow(jit_state_t *_jit, jit_bool_t always)
1762 /* set live state of registers not referenced in a block, but
1763 * referenced in a jump target or normal flow */
1764 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1765 block = _jitc->blocks.ptr + offset;
1766 if (!block->label || block->label->code == jit_code_epilog)
1768 if (always || block->again) {
1776 _jit_optimize(jit_state_t *_jit)
1786 _jitc->function = NULL;
1789 sequential_labels();
1798 /* Figure out labels that are only reached with a jump
1799 * and is required to do a simple redundant_store removal
1800 * on jit_beqi below */
1802 for (node = _jitc->head; node; node = node->next) {
1803 switch (node->code) {
1804 case jit_code_label:
1806 node->flag |= jit_flag_head;
1808 case jit_code_jmpi: case jit_code_jmpr:
1809 case jit_code_epilog:
1812 case jit_code_data: case jit_code_note:
1820 for (node = _jitc->head; node; node = node->next) {
1821 mask = jit_classify(node->code);
1822 if (mask & jit_cc_a0_reg)
1823 node->u.w &= ~jit_regno_patch;
1824 if (mask & jit_cc_a1_reg)
1825 node->v.w &= ~jit_regno_patch;
1826 if (mask & jit_cc_a2_reg)
1827 node->w.w &= ~jit_regno_patch;
1828 if (node->code == jit_code_beqi) {
1829 if (redundant_store(node, 1)) {
1830 block = _jitc->blocks.ptr + ((jit_node_t *)node->u.n)->v.w;
1835 else if (node->code == jit_code_bnei) {
1836 if (redundant_store(node, 0)) {
1837 block = _jitc->blocks.ptr + ((jit_node_t *)node->u.n)->v.w;
1845 todo = check_block_again();
1847 /* If instructions were removed or first pass did modify the entry
1848 * state of any block */
1854 /* If any block again has the entry state modified. */
1855 todo = check_block_again();
1859 for (node = _jitc->head; node; node = node->next) {
1860 mask = jit_classify(node->code);
1861 if (mask & jit_cc_a0_reg)
1862 node->u.w &= ~jit_regno_patch;
1863 if (mask & jit_cc_a1_reg)
1864 node->v.w &= ~jit_regno_patch;
1865 if (mask & jit_cc_a2_reg)
1866 node->w.w &= ~jit_regno_patch;
1867 if (node->code == jit_code_prolog)
1868 _jitc->function = _jitc->functions.ptr + node->w.w;
1869 else if(node->code == jit_code_epilog)
1870 _jitc->function = NULL;
1873 if (mask & jit_cc_a0_flt) {
1874 node->u.p = jit_data(&node->u.f, sizeof(jit_float32_t), 4);
1875 node->flag |= jit_flag_node | jit_flag_data;
1877 else if (mask & jit_cc_a0_dbl) {
1878 node->u.p = jit_data(&node->u.d, sizeof(jit_float64_t), 8);
1879 node->flag |= jit_flag_node | jit_flag_data;
1881 else if (mask & jit_cc_a1_flt) {
1882 node->v.p = jit_data(&node->v.f, sizeof(jit_float32_t), 4);
1883 node->flag |= jit_flag_node | jit_flag_data;
1885 else if (mask & jit_cc_a1_dbl) {
1886 node->v.p = jit_data(&node->v.d, sizeof(jit_float64_t), 8);
1887 node->flag |= jit_flag_node | jit_flag_data;
1889 else if (mask & jit_cc_a2_flt) {
1890 node->w.p = jit_data(&node->w.f, sizeof(jit_float32_t), 4);
1891 node->flag |= jit_flag_node | jit_flag_data;
1893 else if (mask & jit_cc_a2_dbl) {
1894 node->w.p = jit_data(&node->w.d, sizeof(jit_float64_t), 8);
1895 node->flag |= jit_flag_node | jit_flag_data;
1898 if (_jitc->function) {
1899 if ((mask & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
1900 (jit_cc_a0_reg|jit_cc_a0_chg)) {
1901 if (mask & jit_cc_a0_rlh) {
1902 jit_regset_setbit(&_jitc->function->regset,
1903 jit_regno(node->u.q.l));
1904 jit_regset_setbit(&_jitc->function->regset,
1905 jit_regno(node->u.q.h));
1908 jit_regset_setbit(&_jitc->function->regset,
1909 jit_regno(node->u.w));
1911 if ((mask & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
1912 (jit_cc_a1_reg|jit_cc_a1_chg))
1913 jit_regset_setbit(&_jitc->function->regset,
1914 jit_regno(node->v.w));
1915 if ((mask & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
1916 (jit_cc_a2_reg|jit_cc_a2_chg))
1917 jit_regset_setbit(&_jitc->function->regset,
1918 jit_regno(node->w.w));
1925 _jit_reglive(jit_state_t *_jit, jit_node_t *node)
1931 switch (node->code) {
1932 case jit_code_label: case jit_code_prolog: case jit_code_epilog:
1933 block = _jitc->blocks.ptr + node->v.w;
1934 jit_regset_set(&_jitc->reglive, &block->reglive);
1936 case jit_code_callr:
1937 value = jit_regno(node->u.w);
1938 if (!(node->u.w & jit_regno_patch)) {
1939 jit_regset_setbit(&_jitc->reglive, value);
1941 case jit_code_calli:
1942 for (value = 0; value < _jitc->reglen; value++) {
1943 spec = jit_class(_rvs[value].spec);
1944 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
1945 jit_regset_setbit(&_jitc->reglive, value);
1946 else if (!(spec & jit_class_sav))
1947 jit_regset_clrbit(&_jitc->reglive, value);
1951 value = jit_classify(node->code);
1952 if (value & jit_cc_a0_reg) {
1953 if (value & jit_cc_a0_rlh) {
1954 if (!(node->u.q.l & jit_regno_patch)) {
1955 if (value & jit_cc_a0_chg) {
1956 jit_regset_clrbit(&_jitc->reglive, node->u.q.l);
1957 jit_regset_setbit(&_jitc->regmask, node->u.q.l);
1960 jit_regset_setbit(&_jitc->reglive, node->u.q.l);
1962 if (!(node->u.q.h & jit_regno_patch)) {
1963 if (value & jit_cc_a0_chg) {
1964 jit_regset_clrbit(&_jitc->reglive, node->u.q.h);
1965 jit_regset_setbit(&_jitc->regmask, node->u.q.h);
1968 jit_regset_setbit(&_jitc->reglive, node->u.q.h);
1972 if (!(node->u.w & jit_regno_patch)) {
1973 if (value & jit_cc_a0_chg) {
1974 jit_regset_clrbit(&_jitc->reglive, node->u.w);
1975 jit_regset_setbit(&_jitc->regmask, node->u.w);
1978 jit_regset_setbit(&_jitc->reglive, node->u.w);
1982 if ((value & jit_cc_a1_reg) && !(node->v.w & jit_regno_patch)) {
1983 if (value & jit_cc_a1_chg) {
1984 jit_regset_clrbit(&_jitc->reglive, node->v.w);
1985 jit_regset_setbit(&_jitc->regmask, node->v.w);
1988 jit_regset_setbit(&_jitc->reglive, node->v.w);
1990 if (value & jit_cc_a2_reg) {
1991 if (value & jit_cc_a2_rlh) {
1992 /* Assume registers are not changed */
1993 if (!(node->w.q.l & jit_regno_patch))
1994 jit_regset_setbit(&_jitc->reglive, node->w.q.l);
1995 if (!(node->w.q.h & jit_regno_patch))
1996 jit_regset_setbit(&_jitc->reglive, node->w.q.h);
1999 if (!(node->w.w & jit_regno_patch)) {
2000 if (value & jit_cc_a2_chg) {
2001 jit_regset_clrbit(&_jitc->reglive, node->w.w);
2002 jit_regset_setbit(&_jitc->regmask, node->w.w);
2005 jit_regset_setbit(&_jitc->reglive, node->w.w);
2009 if (jit_regset_set_p(&_jitc->regmask)) {
2010 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
2011 if (jit_regset_set_p(&_jitc->regmask)) {
2012 /* any unresolved live state is considered as live */
2013 jit_regset_ior(&_jitc->reglive,
2014 &_jitc->reglive, &_jitc->regmask);
2015 jit_regset_set_ui(&_jitc->regmask, 0);
2023 _jit_regarg_set(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
2028 if (value & jit_cc_a0_reg) {
2029 if (value & jit_cc_a0_rlh) {
2030 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.l));
2031 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.h));
2034 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.w));
2036 if (value & jit_cc_a1_reg)
2037 jit_regset_setbit(&_jitc->regarg, jit_regno(node->v.w));
2038 if (value & jit_cc_a2_reg) {
2039 if (value & jit_cc_a2_rlh) {
2040 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.l));
2041 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.h));
2044 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.w));
2049 _jit_regarg_clr(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
2052 jit_size_collect(node);
2054 if (value & jit_cc_a0_reg) {
2055 if (value & jit_cc_a0_rlh) {
2056 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.l));
2057 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.h));
2060 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.w));
2062 if (value & jit_cc_a1_reg)
2063 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->v.w));
2064 if (value & jit_cc_a2_reg) {
2065 if (value & jit_cc_a2_rlh) {
2066 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.l));
2067 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.h));
2070 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.w));
2075 _jit_realize(jit_state_t *_jit)
2077 assert(!_jitc->realize);
2078 if (_jitc->function)
2083 /* ensure it is aligned */
2084 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
2087 /* Heuristic to guess code buffer size */
2089 _jit->code.length = _jitc->pool.length * 1024 * _jitc->mult;
2091 _jit->code.length = jit_get_size();
2096 _jit_dataset(jit_state_t *_jit)
2105 assert(!_jitc->dataset);
2107 assert(_jit->user_data);
2109 if (!_jit->user_data) {
2111 /* create read only data buffer */
2112 _jit->data.length = (_jitc->data.offset +
2113 /* reserve space for annotations */
2114 _jitc->note.size + 4095) & -4096;
2116 mmap_fd = open("/dev/zero", O_RDWR);
2118 _jit->data.ptr = mmap(NULL, _jit->data.length,
2119 PROT_READ | PROT_WRITE,
2120 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2121 assert(_jit->data.ptr != MAP_FAILED);
2126 #endif /* !HAVE_MMAP */
2128 if (!_jitc->no_data)
2129 jit_memcpy(_jit->data.ptr, _jitc->data.ptr, _jitc->data.offset);
2131 if (_jitc->no_note) {
2132 /* Space for one note is always allocated, so revert it here
2133 * if after jit_new_state was called, it is also requested to
2134 * not generate annotation information */
2135 _jit->note.length = 0;
2136 _jitc->note.size = 0;
2139 _jitc->note.base = _jit->data.ptr;
2140 if (!_jitc->no_data)
2141 _jitc->note.base += _jitc->data.offset;
2142 memset(_jitc->note.base, 0, _jitc->note.size);
2145 if (_jit->user_data)
2146 /* Need the temporary hashed data until jit_emit is finished */
2147 ptr = _jitc->no_data ? _jitc->data.ptr : _jit->data.ptr;
2149 ptr = _jit->data.ptr;
2150 /* Temporary hashed data no longer required */
2151 jit_free((jit_pointer_t *)&_jitc->data.ptr);
2154 for (offset = 0; offset < _jitc->data.size; offset++) {
2155 for (node = _jitc->data.table[offset]; node; node = node->next) {
2156 node->flag |= jit_flag_patch;
2157 node->u.w = (jit_word_t)(ptr + node->u.w);
2165 _jit_get_code(jit_state_t *_jit, jit_word_t *length)
2167 assert(_jitc->realize);
2170 /* If code already generated, return exact size of code */
2171 *length = _jit->pc.uc - _jit->code.ptr;
2173 /* Else return current size of the code buffer */
2174 *length = _jit->code.length;
2177 return (_jit->code.ptr);
2181 _jit_set_code(jit_state_t *_jit, jit_pointer_t ptr, jit_word_t length)
2183 assert(_jitc->realize);
2184 _jit->code.ptr = ptr;
2185 _jit->code.length = length;
2186 _jit->user_code = 1;
2190 _jit_get_data(jit_state_t *_jit, jit_word_t *data_size, jit_word_t *note_size)
2192 assert(_jitc->realize);
2194 *data_size = _jitc->data.offset;
2196 *note_size = _jitc->note.size;
2197 return (_jit->data.ptr);
2201 _jit_set_data(jit_state_t *_jit, jit_pointer_t ptr,
2202 jit_word_t length, jit_word_t flags)
2204 assert(_jitc->realize);
2205 if (flags & JIT_DISABLE_DATA)
2208 assert(length >= _jitc->data.offset);
2209 if (flags & JIT_DISABLE_NOTE)
2212 if (flags & JIT_DISABLE_DATA)
2213 assert(length >= _jitc->note.size);
2215 assert(length >= _jitc->data.offset + _jitc->note.size);
2217 _jit->data.ptr = ptr;
2218 _jit->data.length = length;
2219 _jit->user_data = 1;
2223 _jit_emit(jit_state_t *_jit)
2232 int mmap_prot, mmap_flags;
2234 if (!_jitc->realize)
2237 if (!_jitc->dataset)
2243 assert(_jit->user_code);
2245 if (!_jit->user_code) {
2246 mmap_prot = PROT_READ | PROT_WRITE;
2248 mmap_prot |= PROT_EXEC;
2251 mmap_prot = PROT_MPROTECT(mmap_prot);
2254 mmap_flags = MAP_PRIVATE;
2256 mmap_flags |= MAP_ANON;
2258 mmap_fd = open("/dev/zero", O_RDWR);
2260 _jit->code.ptr = mmap(NULL, _jit->code.length,
2261 mmap_prot, mmap_flags, mmap_fd, 0);
2262 assert(_jit->code.ptr != MAP_FAILED);
2264 #endif /* !HAVE_MMAP */
2265 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2266 jit_get_max_instr();
2267 _jit->pc.uc = _jit->code.ptr;
2271 result = mprotect(_jit->code.ptr, _jit->code.length,
2272 PROT_READ | PROT_WRITE);
2273 assert(result == 0);
2275 if ((code = emit_code()) == NULL) {
2276 _jitc->patches.offset = 0;
2277 for (node = _jitc->head; node; node = node->next) {
2279 (node->code == jit_code_label ||
2280 node->code == jit_code_epilog))
2281 node->flag &= ~jit_flag_patch;
2284 assert(_jit->user_code);
2286 if (_jit->user_code)
2290 length = _jitc->pool.length * 1024 * _jitc->mult;
2292 /* Should only happen on very special cases */
2293 length = _jit->code.length + 4096;
2297 munmap(_jit->code.ptr, _jit->code.length);
2302 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2303 _jit->code.ptr, length, 0);
2305 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2306 length, MREMAP_MAYMOVE, NULL);
2309 _jit->code.ptr = mmap(NULL, length,
2310 PROT_EXEC | PROT_READ | PROT_WRITE,
2311 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2314 assert(_jit->code.ptr != MAP_FAILED);
2315 _jit->code.length = length;
2316 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2317 jit_get_max_instr();
2318 _jit->pc.uc = _jit->code.ptr;
2319 #endif /* !HAVE_MMAP */
2326 if (!_jit->user_code)
2331 if (!_jitc->no_note)
2334 if (_jit->user_data)
2335 jit_free((jit_pointer_t *)&_jitc->data.ptr);
2338 result = mprotect(_jit->data.ptr,
2339 _jit->data.length, PROT_READ);
2340 assert(result == 0);
2342 if (!_jit->user_code) {
2343 length = _jit->pc.uc - _jit->code.ptr;
2344 # if __riscv && __WORDSIZE == 64
2345 /* FIXME should start adding consts at a page boundary */
2346 length -= _jitc->consts.hash.count * sizeof(jit_word_t);
2348 result = mprotect(_jit->code.ptr, length, PROT_READ | PROT_EXEC);
2349 assert(result == 0);
2351 #endif /* HAVE_MMAP */
2353 return (_jit->code.ptr);
2359 _jit_frame(jit_state_t *_jit, jit_int32_t frame)
2361 jit_trampoline(frame, 1);
2365 _jit_tramp(jit_state_t *_jit, jit_int32_t frame)
2367 jit_trampoline(frame, 0);
2371 _jit_trampoline(jit_state_t *_jit, jit_int32_t frame, jit_bool_t prolog)
2375 /* Must be called after prolog, actually, just to simplify
2376 * tests and know there is a current function and that
2377 * _jitc->function->self.aoff is at the before any alloca value */
2378 assert(_jitc->tail && _jitc->tail->code == jit_code_prolog);
2380 /* + 24 for 3 possible spilled temporaries (that could be a double) */
2382 #if defined(__hppa__)
2383 frame += _jitc->function->self.aoff;
2385 frame -= _jitc->function->self.aoff;
2387 _jitc->function->frame = frame;
2389 _jitc->function->define_frame = 1;
2391 _jitc->function->assume_frame = 1;
2392 for (regno = 0; regno < _jitc->reglen; regno++)
2393 if (jit_class(_rvs[regno].spec) & jit_class_sav)
2394 jit_regset_setbit(&_jitc->function->regset, regno);
2397 /* Compute initial reglive and regmask set values of a basic block.
2398 * reglive is the set of known live registers
2399 * regmask is the set of registers not referenced in the block
2400 * Registers in regmask might be live.
2403 _jit_setup(jit_state_t *_jit, jit_block_t *block)
2407 unsigned long value;
2409 jit_regset_set_mask(&block->regmask, _jitc->reglen);
2410 for (value = 0; value < _jitc->reglen; ++value)
2411 if (!(jit_class(_rvs[value].spec) & (jit_class_gpr|jit_class_fpr)))
2412 jit_regset_clrbit(&block->regmask, value);
2414 for (node = block->label->next; node; node = node->next) {
2415 switch (node->code) {
2416 case jit_code_label: case jit_code_prolog:
2417 case jit_code_epilog:
2420 /* Check argument registers in reverse order to properly
2421 * handle registers that are both, argument and result */
2422 value = jit_classify(node->code);
2423 if ((value & jit_cc_a2_reg) &&
2424 !(node->w.w & jit_regno_patch) &&
2425 jit_regset_tstbit(&block->regmask, node->w.w)) {
2426 live = !(value & jit_cc_a2_chg);
2427 jit_regset_clrbit(&block->regmask, node->w.w);
2429 jit_regset_setbit(&block->reglive, node->w.w);
2431 if ((value & jit_cc_a1_reg) &&
2432 !(node->v.w & jit_regno_patch) &&
2433 jit_regset_tstbit(&block->regmask, node->v.w)) {
2434 live = !(value & jit_cc_a1_chg);
2435 jit_regset_clrbit(&block->regmask, node->v.w);
2437 jit_regset_setbit(&block->reglive, node->v.w);
2439 if (value & jit_cc_a0_reg) {
2440 live = !(value & jit_cc_a0_chg);
2441 if (value & jit_cc_a0_rlh) {
2442 if (!(node->u.q.l & jit_regno_patch) &&
2443 jit_regset_tstbit(&block->regmask, node->u.q.l)) {
2444 jit_regset_clrbit(&block->regmask, node->u.q.l);
2446 jit_regset_setbit(&block->reglive, node->u.q.l);
2448 if (!(node->u.q.h & jit_regno_patch) &&
2449 jit_regset_tstbit(&block->regmask, node->u.q.h)) {
2450 jit_regset_clrbit(&block->regmask, node->u.q.h);
2452 jit_regset_setbit(&block->reglive, node->u.q.h);
2456 if (!(node->u.w & jit_regno_patch) &&
2457 jit_regset_tstbit(&block->regmask, node->u.w)) {
2458 jit_regset_clrbit(&block->regmask, node->u.w);
2460 jit_regset_setbit(&block->reglive, node->u.w);
2469 /* Update regmask and reglive of blocks at entry point of branch targets
2470 * or normal flow that have a live register not used in this block.
2473 _jit_follow(jit_state_t *_jit, jit_block_t *block)
2479 unsigned long value;
2481 jit_regset_t reglive;
2482 jit_regset_t regmask;
2483 jit_regset_t regtemp;
2485 jit_regset_set(®live, &block->reglive);
2486 jit_regset_set(®mask, &block->regmask);
2487 for (node = block->label->next; node; node = node->next) {
2488 switch (node->code) {
2489 case jit_code_label:
2490 /* Do not consider jmpi and jmpr cannot jump to the
2491 * next instruction. */
2492 next = _jitc->blocks.ptr + node->v.w;
2493 /* Set of live registers in next block that are at unknown
2494 * state in this block. */
2495 jit_regset_and(®temp, ®mask, &next->reglive);
2496 if (jit_regset_set_p(®temp)) {
2497 /* Add live state of next block to current block. */
2498 jit_regset_ior(&block->reglive, &block->reglive, ®temp);
2499 /* Remove from unknown state bitmask. */
2500 jit_regset_com(®temp, ®temp);
2501 jit_regset_and(&block->regmask, &block->regmask, ®temp);
2504 case jit_code_prolog:
2505 case jit_code_epilog:
2507 case jit_code_callr:
2508 value = jit_regno(node->u.w);
2509 if (!(node->u.w & jit_regno_patch)) {
2510 if (jit_regset_tstbit(®mask, value)) {
2511 jit_regset_clrbit(®mask, value);
2512 jit_regset_setbit(®live, value);
2515 case jit_code_calli:
2516 for (value = 0; value < _jitc->reglen; ++value) {
2517 value = jit_regset_scan1(®mask, value);
2518 if (value >= _jitc->reglen)
2520 spec = jit_class(_rvs[value].spec);
2521 if (!(spec & jit_class_sav))
2522 jit_regset_clrbit(®mask, value);
2523 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2524 jit_regset_setbit(®live, value);
2528 value = jit_classify(node->code);
2529 if (value & jit_cc_a2_reg) {
2530 if (value & jit_cc_a2_rlh) {
2531 if (!(node->w.q.l & jit_regno_patch)) {
2532 /* Assume register is not changed */
2533 if (jit_regset_tstbit(®mask, node->w.q.l))
2534 jit_regset_clrbit(®mask, node->w.q.l);
2536 if (!(node->w.q.h & jit_regno_patch)) {
2537 if (jit_regset_tstbit(®mask, node->w.q.h))
2538 jit_regset_clrbit(®mask, node->w.q.h);
2542 if (value & jit_cc_a2_reg) {
2543 if (!(node->w.w & jit_regno_patch)) {
2544 if (jit_regset_tstbit(®mask, node->w.w)) {
2545 jit_regset_clrbit(®mask, node->w.w);
2546 if (!(value & jit_cc_a2_chg))
2547 jit_regset_setbit(®live, node->w.w);
2553 if (value & jit_cc_a1_reg) {
2554 if (!(node->v.w & jit_regno_patch)) {
2555 if (jit_regset_tstbit(®mask, node->v.w)) {
2556 jit_regset_clrbit(®mask, node->v.w);
2557 if (!(value & jit_cc_a1_chg))
2558 jit_regset_setbit(®live, node->v.w);
2562 if (value & jit_cc_a0_reg) {
2563 if (value & jit_cc_a0_rlh) {
2564 if (!(node->u.q.l & jit_regno_patch)) {
2565 if (jit_regset_tstbit(®mask, node->u.q.l)) {
2566 jit_regset_clrbit(®mask, node->u.q.l);
2567 if (!(value & jit_cc_a0_chg))
2568 jit_regset_setbit(®live, node->u.q.l);
2571 if (!(node->u.q.h & jit_regno_patch)) {
2572 if (jit_regset_tstbit(®mask, node->u.q.h)) {
2573 jit_regset_clrbit(®mask, node->u.q.h);
2574 if (!(value & jit_cc_a0_chg))
2575 jit_regset_setbit(®live, node->u.q.h);
2580 if (!(node->u.w & jit_regno_patch)) {
2581 if (jit_regset_tstbit(®mask, node->u.w)) {
2582 jit_regset_clrbit(®mask, node->u.w);
2583 if (!(value & jit_cc_a0_chg))
2584 jit_regset_setbit(®live, node->u.w);
2589 if (value & jit_cc_a0_jmp) {
2590 if (node->flag & jit_flag_node) {
2592 /* Do not consider jmpi and jmpr cannot jump to the
2593 * next instruction. */
2594 next = _jitc->blocks.ptr + label->v.w;
2595 jit_regset_and(®temp, ®mask, &next->reglive);
2596 if (jit_regset_set_p(®temp)) {
2597 /* Add live state. */
2598 jit_regset_ior(&block->reglive,
2599 &block->reglive, ®temp);
2600 /* Remove from unknown state bitmask. */
2601 jit_regset_com(®temp, ®temp);
2602 jit_regset_and(&block->regmask,
2603 &block->regmask, ®temp);
2608 /* Jump to unknown location.
2609 * This is a pitfall of the implementation.
2610 * Only jmpi to not a jit code should reach here,
2611 * or a jmpr of a computed address.
2612 * Because the implementation needs jit_class_nospill
2613 * registers, must treat jmpr as a function call. This
2614 * means that only JIT_Vn registers can be trusted on
2617 jit_regset_set_ui(®mask, 0);
2618 for (regno = 0; regno < _jitc->reglen; regno++) {
2619 spec = jit_class(_rvs[regno].spec);
2620 if ((spec & (jit_class_gpr|jit_class_fpr)) &&
2621 (spec & jit_class_sav))
2622 jit_regset_setbit(®mask, regno);
2624 /* Assume non callee save registers are live due
2625 * to jump to unknown location. */
2626 /* Treat all callee save as live. */
2627 jit_regset_ior(&block->reglive, ®live, ®mask);
2628 /* Treat anything else as dead. */
2637 /* Follow code generation up to finding a label or end of code.
2638 * When finding a label, update the set of live registers.
2639 * On branches, update based on taken branch or normal flow.
2642 _jit_update(jit_state_t *_jit, jit_node_t *node,
2643 jit_regset_t *live, jit_regset_t *mask)
2647 unsigned long value;
2650 jit_regset_t regtemp;
2652 for (; node; node = node->next) {
2653 if (jit_regset_set_p(mask) == 0)
2655 switch (node->code) {
2656 case jit_code_label:
2657 block = _jitc->blocks.ptr + node->v.w;
2658 jit_regset_and(®temp, mask, &block->reglive);
2659 if (jit_regset_set_p(®temp)) {
2660 /* Add live state. */
2661 jit_regset_ior(live, live, ®temp);
2662 /* Remove from unknown state bitmask. */
2663 jit_regset_com(®temp, ®temp);
2664 jit_regset_and(mask, mask, ®temp);
2667 case jit_code_prolog:
2668 jit_regset_set_ui(mask, 0);
2670 case jit_code_epilog:
2671 jit_regset_set_ui(mask, 0);
2673 case jit_code_callr:
2674 value = jit_regno(node->u.w);
2675 if (!(node->u.w & jit_regno_patch)) {
2676 if (jit_regset_tstbit(mask, value)) {
2677 jit_regset_clrbit(mask, value);
2678 jit_regset_setbit(live, value);
2681 case jit_code_calli:
2682 for (value = 0; value < _jitc->reglen; ++value) {
2683 value = jit_regset_scan1(mask, value);
2684 if (value >= _jitc->reglen)
2686 spec = jit_class(_rvs[value].spec);
2687 if (!(spec & jit_class_sav))
2688 jit_regset_clrbit(mask, value);
2689 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2690 jit_regset_setbit(live, value);
2694 value = jit_classify(node->code);
2695 if (value & jit_cc_a2_reg) {
2696 if (value & jit_cc_a2_rlh) {
2697 if (!(node->w.q.l & jit_regno_patch)) {
2698 /* Assume register is not changed */
2699 if (jit_regset_tstbit(mask, node->w.q.l))
2700 jit_regset_clrbit(mask, node->w.q.l);
2702 if (!(node->w.q.h & jit_regno_patch)) {
2703 if (jit_regset_tstbit(mask, node->w.q.h))
2704 jit_regset_clrbit(mask, node->w.q.h);
2708 if (!(node->w.w & jit_regno_patch)) {
2709 if (jit_regset_tstbit(mask, node->w.w)) {
2710 jit_regset_clrbit(mask, node->w.w);
2711 if (!(value & jit_cc_a2_chg))
2712 jit_regset_setbit(live, node->w.w);
2717 if (value & jit_cc_a1_reg) {
2718 if (!(node->v.w & jit_regno_patch)) {
2719 if (jit_regset_tstbit(mask, node->v.w)) {
2720 jit_regset_clrbit(mask, node->v.w);
2721 if (!(value & jit_cc_a1_chg))
2722 jit_regset_setbit(live, node->v.w);
2726 if (value & jit_cc_a0_reg) {
2727 if (value & jit_cc_a0_rlh) {
2728 if (!(node->u.q.l & jit_regno_patch)) {
2729 if (jit_regset_tstbit(mask, node->u.q.l)) {
2730 jit_regset_clrbit(mask, node->u.q.l);
2731 if (!(value & jit_cc_a0_chg))
2732 jit_regset_setbit(live, node->u.q.l);
2735 if (!(node->u.q.h & jit_regno_patch)) {
2736 if (jit_regset_tstbit(mask, node->u.q.h)) {
2737 jit_regset_clrbit(mask, node->u.q.h);
2738 if (!(value & jit_cc_a0_chg))
2739 jit_regset_setbit(live, node->u.q.h);
2744 if (!(node->u.w & jit_regno_patch)) {
2745 if (jit_regset_tstbit(mask, node->u.w)) {
2746 jit_regset_clrbit(mask, node->u.w);
2747 if (!(value & jit_cc_a0_chg))
2748 jit_regset_setbit(live, node->u.w);
2753 if (value & jit_cc_a0_jmp) {
2754 if (node->flag & jit_flag_node) {
2756 /* Do not consider jmpi and jmpr cannot jump to the
2757 * next instruction. */
2758 block = _jitc->blocks.ptr + label->v.w;
2759 jit_regset_and(®temp, mask, &block->reglive);
2760 if (jit_regset_set_p(®temp)) {
2761 /* Add live state. */
2762 jit_regset_ior(live, live, ®temp);
2763 /* Remove from unknown state bitmask. */
2764 jit_regset_com(®temp, ®temp);
2765 jit_regset_and(mask, mask, ®temp);
2769 /* Jump to unknown location.
2770 * This is a pitfall of the implementation.
2771 * Only jmpi to not a jit code should reach here,
2772 * or a jmpr of a computed address.
2773 * Because the implementation needs jit_class_nospill
2774 * registers, must treat jmpr as a function call. This
2775 * means that only JIT_Vn registers can be trusted on
2778 jit_regset_set_ui(mask, 0);
2779 for (regno = 0; regno < _jitc->reglen; regno++) {
2780 spec = jit_class(_rvs[regno].spec);
2781 if ((spec & (jit_class_gpr|jit_class_fpr)) &&
2782 (spec & jit_class_sav))
2783 jit_regset_setbit(mask, regno);
2785 /* Assume non callee save registers are live due
2786 * to jump to unknown location. */
2787 /* Treat all callee save as live. */
2788 jit_regset_ior(live, live, mask);
2789 /* Treat anything else as dead. */
2799 _thread_jumps(jit_state_t *_jit)
2806 for (prev = node = _jitc->head; node;) {
2808 switch (node->code) {
2810 if (redundant_jump(prev, node)) {
2814 if (shortcut_jump(prev, node))
2818 case jit_code_callr: case jit_code_calli:
2819 /* non optimizable jump like code */
2822 mask = jit_classify(node->code);
2823 if (mask & jit_cc_a0_jmp) {
2824 if (reverse_jump(prev, node) ||
2825 shortcut_jump(prev, node))
2836 _sequential_labels(jit_state_t *_jit)
2844 for (prev = node = _jitc->head; node; node = next) {
2846 if (node->code == jit_code_label) {
2849 del_label(prev, node);
2852 if (prev != node && prev->code == jit_code_label) {
2853 if ((jump = node->link)) {
2854 for (; jump; jump = link) {
2857 jump->link = prev->link;
2862 del_label(prev, node);
2866 if (next && next->code == jit_code_label && !next->flag) {
2867 if ((jump = next->link)) {
2868 for (; jump; jump = link) {
2871 jump->link = node->link;
2876 del_label(node, next);
2886 _split_branches(jit_state_t *_jit)
2892 jit_block_t *blocks;
2896 length = _jitc->blocks.length;
2897 jit_alloc((jit_pointer_t *)&blocks, length * sizeof(jit_block_t));
2898 if ((node = _jitc->head) &&
2899 (node->code == jit_code_label || node->code == jit_code_prolog)) {
2900 block = _jitc->blocks.ptr + node->v.w;
2901 memcpy(blocks, block, sizeof(jit_block_t));
2907 for (node = _jitc->head; node; node = next) {
2908 if ((next = node->next)) {
2909 if (next->code == jit_code_label ||
2910 next->code == jit_code_prolog ||
2911 next->code == jit_code_epilog) {
2912 if (offset >= length) {
2913 jit_realloc((jit_pointer_t *)&blocks,
2914 length * sizeof(jit_block_t),
2915 (length + 16) * sizeof(jit_block_t));
2918 block = _jitc->blocks.ptr + next->v.w;
2919 memcpy(blocks + offset, block, sizeof(jit_block_t));
2920 next->v.w = offset++;
2922 /* split block on branches */
2923 else if (jit_classify(node->code) & jit_cc_a0_jmp) {
2924 label = new_node(jit_code_label);
2927 if (offset >= length) {
2928 jit_realloc((jit_pointer_t *)&blocks,
2929 length * sizeof(jit_block_t),
2930 (length + 16) * sizeof(jit_block_t));
2933 block = blocks + offset;
2934 block->label = label;
2935 label->v.w = offset++;
2936 jit_regset_new(&block->reglive);
2937 jit_regset_new(&block->regmask);
2941 jit_free((jit_pointer_t *)&_jitc->blocks.ptr);
2942 _jitc->blocks.ptr = blocks;
2943 _jitc->blocks.offset = offset;
2944 _jitc->blocks.length = length;
2948 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2955 if (!(node->flag & jit_flag_node))
2957 assert(node->code != jit_code_jmpr);
2958 cond = node->code != jit_code_jmpi;
2960 for (next = jump->next; next; next = next->next) {
2961 switch (next->code) {
2963 if (!(next->flag & jit_flag_node))
2965 if (jump->link == node)
2966 jump->link = node->link;
2968 for (temp = jump->link;
2971 assert(temp != NULL);
2972 temp->link = node->link;
2976 node->link = jump->link;
2982 node->code = jit_code_jmpr;
2983 node->u.w = next->u.w;
2985 node->flag &= ~jit_flag_node;
2987 case jit_code_note: case jit_code_label:
2997 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2999 jit_node_t *local_prev;
3000 jit_node_t *local_next;
3002 if (!(node->flag & jit_flag_node))
3004 for (local_prev = node, local_next = node->next;
3006 local_prev = local_next, local_next = local_next->next) {
3008 switch (local_next->code) {
3009 case jit_code_label: case jit_code_epilog:
3010 if (node->u.n == local_next) {
3011 if (local_next->link == node)
3012 local_next->link = node->link;
3014 for (local_prev = local_next->link;
3015 local_prev->link != node;
3016 local_prev = local_prev->link)
3017 assert(local_prev != NULL);
3018 local_prev->link = node->link;
3020 del_node(prev, node);
3024 case jit_code_name: case jit_code_note:
3025 case jit_code_align:
3035 reverse_jump_code(jit_code_t code)
3038 case jit_code_bltr: return (jit_code_bger);
3039 case jit_code_blti: return (jit_code_bgei);
3040 case jit_code_bltr_u: return (jit_code_bger_u);
3041 case jit_code_blti_u: return (jit_code_bgei_u);
3042 case jit_code_bler: return (jit_code_bgtr);
3043 case jit_code_blei: return (jit_code_bgti);
3044 case jit_code_bler_u: return (jit_code_bgtr_u);
3045 case jit_code_blei_u: return (jit_code_bgti_u);
3046 case jit_code_beqr: return (jit_code_bner);
3047 case jit_code_beqi: return (jit_code_bnei);
3048 case jit_code_bger: return (jit_code_bltr);
3049 case jit_code_bgei: return (jit_code_blti);
3050 case jit_code_bger_u: return (jit_code_bltr_u);
3051 case jit_code_bgei_u: return (jit_code_blti_u);
3052 case jit_code_bgtr: return (jit_code_bler);
3053 case jit_code_bgti: return (jit_code_blei);
3054 case jit_code_bgtr_u: return (jit_code_bler_u);
3055 case jit_code_bgti_u: return (jit_code_blei_u);
3056 case jit_code_bner: return (jit_code_beqr);
3057 case jit_code_bnei: return (jit_code_beqi);
3058 case jit_code_bmsr: return (jit_code_bmcr);
3059 case jit_code_bmsi: return (jit_code_bmci);
3060 case jit_code_bmcr: return (jit_code_bmsr);
3061 case jit_code_bmci: return (jit_code_bmsi);
3062 case jit_code_bltr_f: return (jit_code_bunger_f);
3063 case jit_code_blti_f: return (jit_code_bungei_f);
3064 case jit_code_bler_f: return (jit_code_bungtr_f);
3065 case jit_code_blei_f: return (jit_code_bungti_f);
3067 case jit_code_beqr_f: return (jit_code_bner_f);
3068 case jit_code_beqi_f: return (jit_code_bnei_f);
3070 case jit_code_bger_f: return (jit_code_bunltr_f);
3071 case jit_code_bgei_f: return (jit_code_bunlti_f);
3072 case jit_code_bgtr_f: return (jit_code_bunler_f);
3073 case jit_code_bgti_f: return (jit_code_bunlei_f);
3075 case jit_code_bner_f: return (jit_code_beqr_f);
3076 case jit_code_bnei_f: return (jit_code_beqr_f);
3078 case jit_code_bunltr_f: return (jit_code_bger_f);
3079 case jit_code_bunlti_f: return (jit_code_bgei_f);
3080 case jit_code_bunler_f: return (jit_code_bgtr_f);
3081 case jit_code_bunlei_f: return (jit_code_bgti_f);
3083 case jit_code_buneqr_f: return (jit_code_bltgtr_f);
3084 case jit_code_buneqi_f: return (jit_code_bltgti_f);
3086 case jit_code_bunger_f: return (jit_code_bltr_f);
3087 case jit_code_bungei_f: return (jit_code_blti_f);
3088 case jit_code_bungtr_f: return (jit_code_bler_f);
3089 case jit_code_bungti_f: return (jit_code_blei_f);
3091 case jit_code_bltgtr_f: return (jit_code_buneqr_f);
3092 case jit_code_bltgti_f: return (jit_code_buneqi_f);
3094 case jit_code_bordr_f: return (jit_code_bunordr_f);
3095 case jit_code_bordi_f: return (jit_code_bunordi_f);
3096 case jit_code_bunordr_f:return (jit_code_bordr_f);
3097 case jit_code_bunordi_f:return (jit_code_bordi_f);
3098 case jit_code_bltr_d: return (jit_code_bunger_d);
3099 case jit_code_blti_d: return (jit_code_bungei_d);
3100 case jit_code_bler_d: return (jit_code_bungtr_d);
3101 case jit_code_blei_d: return (jit_code_bungti_d);
3103 case jit_code_beqr_d: return (jit_code_bner_d);
3104 case jit_code_beqi_d: return (jit_code_bnei_d);
3106 case jit_code_bger_d: return (jit_code_bunltr_d);
3107 case jit_code_bgei_d: return (jit_code_bunlti_d);
3108 case jit_code_bgtr_d: return (jit_code_bunler_d);
3109 case jit_code_bgti_d: return (jit_code_bunlei_d);
3111 case jit_code_bner_d: return (jit_code_beqr_d);
3112 case jit_code_bnei_d: return (jit_code_beqi_d);
3114 case jit_code_bunltr_d: return (jit_code_bger_d);
3115 case jit_code_bunlti_d: return (jit_code_bgei_d);
3116 case jit_code_bunler_d: return (jit_code_bgtr_d);
3117 case jit_code_bunlei_d: return (jit_code_bgti_d);
3119 case jit_code_buneqr_d: return (jit_code_bltgtr_d);
3120 case jit_code_buneqi_d: return (jit_code_bltgti_d);
3122 case jit_code_bunger_d: return (jit_code_bltr_d);
3123 case jit_code_bungei_d: return (jit_code_blti_d);
3124 case jit_code_bungtr_d: return (jit_code_bler_d);
3125 case jit_code_bungti_d: return (jit_code_blei_d);
3127 case jit_code_bltgtr_d: return (jit_code_buneqr_d);
3128 case jit_code_bltgti_d: return (jit_code_buneqi_d);
3130 case jit_code_bordr_d: return (jit_code_bunordr_d);
3131 case jit_code_bordi_d: return (jit_code_bunordi_d);
3132 case jit_code_bunordr_d:return (jit_code_bordr_d);
3133 case jit_code_bunordi_d:return (jit_code_bordi_d);
3134 case jit_code_boaddr: return (jit_code_bxaddr);
3135 case jit_code_boaddi: return (jit_code_bxaddi);
3136 case jit_code_boaddr_u: return (jit_code_bxaddr_u);
3137 case jit_code_boaddi_u: return (jit_code_bxaddi_u);
3138 case jit_code_bxaddr: return (jit_code_boaddr);
3139 case jit_code_bxaddi: return (jit_code_boaddi);
3140 case jit_code_bxaddr_u: return (jit_code_boaddr_u);
3141 case jit_code_bxaddi_u: return (jit_code_boaddi_u);
3142 case jit_code_bosubr: return (jit_code_bxsubr);
3143 case jit_code_bosubi: return (jit_code_bxsubi);
3144 case jit_code_bosubr_u: return (jit_code_bxsubr_u);
3145 case jit_code_bosubi_u: return (jit_code_bxsubi_u);
3146 case jit_code_bxsubr: return (jit_code_bosubr);
3147 case jit_code_bxsubi: return (jit_code_bosubi);
3148 case jit_code_bxsubr_u: return (jit_code_bosubr_u);
3149 case jit_code_bxsubi_u: return (jit_code_bosubi_u);
3150 default: abort(); /* invalid jump code */
3155 * change common pattern:
3156 * <cond_jump L0> <jump L1> <label L0>
3158 * <reverse_cond_jump L1>
3161 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3163 jit_node_t *local_prev;
3164 jit_node_t *local_next;
3165 jit_node_t *local_jump;
3167 if (!(node->flag & jit_flag_node))
3169 /* =><cond_jump L0> <jump L1> <label L0> */
3170 local_next = node->next;
3171 if (local_next->code != jit_code_jmpi ||
3172 !(local_next->flag & jit_flag_node))
3174 /* <cond_jump L0> =><jump L1> <label L0> */
3176 local_jump = local_next->u.n;
3177 for (local_prev = local_next, local_next = local_next->next;
3179 local_prev = local_next, local_next = local_next->next) {
3180 switch (local_next->code) {
3181 case jit_code_label: case jit_code_epilog:
3182 if (node->u.n == local_next) {
3183 if (local_next->link == node)
3184 local_next->link = node->link;
3186 for (local_prev = local_next->link;
3187 local_prev->link != node;
3188 local_prev = local_prev->link)
3189 assert(local_prev != NULL);
3190 local_prev->link = node->link;
3192 del_node(node, node->next);
3193 node->code = reverse_jump_code(node->code);
3194 node->u.n = local_jump;
3195 node->link = local_jump->link;
3196 local_jump->link = node;
3210 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump)
3221 if (prev->code == jit_code_epilog)
3223 assert(prev->code == jit_code_label);
3224 if ((prev->flag & jit_flag_head) || node->link || prev->link != node)
3225 /* multiple sources */
3227 /* if there are sequential labels it will return below */
3233 regno = jit_regno(node->v.w);
3234 for (iter = prev->next; iter; prev = iter, iter = iter->next) {
3235 switch (iter->code) {
3236 case jit_code_label: case jit_code_prolog:
3237 case jit_code_epilog:
3240 if (regno == jit_regno(iter->u.w)) {
3241 if (iter->flag || iter->v.w != word)
3244 del_node(prev, iter);
3249 spec = jit_classify(iter->code);
3250 if (spec & jit_cc_a0_jmp)
3252 if ((spec & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
3253 (jit_cc_a0_reg|jit_cc_a0_chg)) {
3254 if (spec & jit_cc_a0_rlh) {
3255 if (regno == jit_regno(iter->u.q.l) ||
3256 regno == jit_regno(iter->u.q.h))
3260 if (regno == jit_regno(iter->u.w))
3264 if ((spec & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
3265 (jit_cc_a1_reg|jit_cc_a1_chg)) {
3266 if (regno == jit_regno(iter->v.w))
3269 if ((spec & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
3270 (jit_cc_a2_reg|jit_cc_a2_chg)) {
3271 if (regno == jit_regno(iter->w.w))
3282 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
3283 jit_int32_t kind, jit_int32_t size)
3289 regno = jit_regno(node->u.w);
3290 right = jit_regno(node->v.w);
3291 value = _jitc->values + regno;
3292 if ((value->kind == jit_kind_register &&
3293 jit_regno(value->base.q.l) == right &&
3294 value->base.q.h == _jitc->gen[right]) ||
3295 (value->kind == kind && _jitc->values[right].kind == kind &&
3296 memcmp(&value->base.w, &_jitc->values[right].base.w, size) == 0)) {
3297 del_node(prev, node);
3300 if (_jitc->values[right].kind == jit_kind_word)
3301 jit_memcpy(value, _jitc->values + right, sizeof(jit_value_t));
3303 value->kind = jit_kind_register;
3304 value->base.q.l = right;
3305 value->base.q.h = _jitc->gen[right];
3307 ++_jitc->gen[regno];
3313 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
3314 jit_int32_t kind, jit_int32_t size)
3321 regno = jit_regno(node->u.w);
3322 value = _jitc->values + regno;
3323 if (node->flag & jit_flag_node) {
3324 /* set to undefined if value will be patched */
3326 ++_jitc->gen[regno];
3329 if (value->kind == kind) {
3330 if (memcmp(&node->v.w, &value->base.w, size) == 0) {
3331 del_node(prev, node);
3334 spec = jit_class(_rvs[regno].spec);
3335 if (kind == jit_kind_word)
3336 spec &= jit_class_gpr;
3338 spec &= (jit_class_xpr | jit_class_fpr);
3339 for (offset = 0; offset < _jitc->reglen; offset++) {
3340 if (_jitc->values[offset].kind == kind &&
3341 memcmp(&node->v.w, &_jitc->values[offset].base.w, size) == 0 &&
3342 (jit_class(_rvs[offset].spec) & spec) == spec) {
3343 if (kind == jit_kind_word)
3344 node->code = jit_code_movr;
3345 else if (kind == jit_kind_float32)
3346 node->code = jit_code_movr_f;
3348 node->code = jit_code_movr_d;
3350 jit_memcpy(value, _jitc->values + offset, sizeof(jit_value_t));
3351 ++_jitc->gen[regno];
3357 jit_memcpy(&value->base.w, &node->v.w, size);
3358 ++_jitc->gen[regno];
3363 /* simple/safe redundandy test not checking if another register
3364 * holds the same value
3367 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3373 regno = jit_regno(node->u.w);
3374 right = jit_regno(node->v.w);
3375 value = _jitc->values + regno;
3376 if (regno != right &&
3377 value->kind == jit_kind_code && value->code == node->code &&
3378 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3379 node->w.w == value->disp.w) {
3380 del_node(prev, node);
3383 value->kind = jit_kind_code;
3384 value->code = node->code;
3385 value->base.q.l = right;
3386 value->base.q.h = _jitc->gen[right];
3387 value->disp.w = node->w.w;
3388 ++_jitc->gen[regno];
3394 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3401 regno = jit_regno(node->w.w);
3402 right = jit_regno(node->v.w);
3403 value = _jitc->values + regno;
3405 /* check for redundant store after load */
3406 if (regno != right &&
3407 value->kind == jit_kind_code && value->code == node->code &&
3408 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3409 node->u.w == value->disp.w) {
3410 del_node(prev, node);
3414 /* assume anything can alias, and invalidate tracked values */
3415 for (offset = 0; offset < _jitc->reglen; offset++) {
3416 if (_jitc->values[offset].kind == jit_kind_code) {
3417 _jitc->values[offset].kind = 0;
3418 ++_jitc->gen[offset];
3422 /* no multiple information, so, if set to a constant,
3423 * prefer to keep that information */
3424 if (value->kind == 0) {
3425 switch (node->code) {
3426 /* no information about signed/unsigned either */
3427 case jit_code_stxi_c: value->code = jit_code_ldxi_c; break;
3428 case jit_code_stxi_s: value->code = jit_code_ldxi_s; break;
3429 case jit_code_stxi_i: value->code = jit_code_ldxi_i; break;
3430 case jit_code_stxi_l: value->code = jit_code_ldxi_l; break;
3431 case jit_code_stxi_f: value->code = jit_code_ldxi_f; break;
3432 case jit_code_stxi_d: value->code = jit_code_ldxi_d; break;
3435 value->kind = jit_kind_code;
3436 value->base.q.l = right;
3437 value->base.q.h = _jitc->gen[right];
3438 value->disp.w = node->u.w;
3444 /* usually there should be only one store in the
3445 * jit_get_reg/jit_unget_reg, but properly handle
3446 * multiple ones by moving the save node */
3448 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3453 if ((temp = _jitc->spill[regno]) && (save = temp->next) != node) {
3454 temp->next = save->next;
3455 save->next = node->next;
3457 _jitc->spill[regno] = node;
3461 /* checks for simple cases where a register is set more than
3462 * once to the same value, and is a common pattern of calls
3463 * to jit_pushargi and jit_pushargr
3466 _simplify(jit_state_t *_jit)
3476 for (prev = NULL, node = _jitc->head; node; prev = node, node = next) {
3478 switch (node->code) {
3479 case jit_code_label: case jit_code_prolog:
3480 case jit_code_callr: case jit_code_calli:
3482 memset(_jitc->gen, 0, sizeof(jit_int32_t) * _jitc->reglen);
3483 memset(_jitc->values, 0, sizeof(jit_value_t) * _jitc->reglen);
3486 _jitc->spill[jit_regno(node->u.w)] = prev;
3489 regno = jit_regno(node->u.w);
3490 if (register_change_p(node->link->next, node, regno) !=
3492 /* spill not required due to optimizing common
3493 * redundancy case of calling jit_get_reg/jit_unget_reg
3494 * and then setting the register to the value it is
3495 * already holding */
3496 patch_register(node->link->next, node,
3497 jit_regno_patch|regno, regno);
3499 del_node(_jitc->spill[regno], node->link);
3500 del_node(prev, node);
3503 _jitc->spill[regno] = NULL;
3506 regno = jit_regno(node->u.w);
3507 if (simplify_movr(prev, node,
3508 jit_kind_word, sizeof(jit_word_t))) {
3510 simplify_spill(node = prev, regno);
3514 regno = jit_regno(node->u.w);
3515 if (simplify_movi(prev, node,
3516 jit_kind_word, sizeof(jit_word_t))) {
3518 simplify_spill(node = prev, regno);
3521 case jit_code_movr_f:
3522 regno = jit_regno(node->u.w);
3523 if (simplify_movr(prev, node,
3524 jit_kind_float32, sizeof(jit_float32_t))) {
3526 simplify_spill(node = prev, regno);
3529 case jit_code_movi_f:
3530 regno = jit_regno(node->u.w);
3531 if (simplify_movi(prev, node,
3532 jit_kind_float32, sizeof(jit_float32_t))) {
3534 simplify_spill(node = prev, regno);
3537 case jit_code_movr_d:
3538 regno = jit_regno(node->u.w);
3539 if (simplify_movr(prev, node,
3540 jit_kind_float64, sizeof(jit_float64_t))) {
3542 simplify_spill(node = prev, regno);
3545 case jit_code_movi_d:
3546 regno = jit_regno(node->u.w);
3547 if (simplify_movi(prev, node,
3548 jit_kind_float64, sizeof(jit_float64_t))) {
3550 simplify_spill(node = prev, regno);
3553 case jit_code_ldxi_c: case jit_code_ldxi_uc:
3554 case jit_code_ldxi_s: case jit_code_ldxi_us:
3555 case jit_code_ldxi_i: case jit_code_ldxi_ui:
3556 case jit_code_ldxi_l:
3557 case jit_code_ldxi_f: case jit_code_ldxi_d:
3558 regno = jit_regno(node->u.w);
3559 if (simplify_ldxi(prev, node)) {
3561 simplify_spill(node = prev, regno);
3564 case jit_code_stxi_c: case jit_code_stxi_s:
3565 case jit_code_stxi_i: case jit_code_stxi_l:
3566 case jit_code_stxi_f: case jit_code_stxi_d:
3567 regno = jit_regno(node->u.w);
3568 if (simplify_stxi(prev, node)) {
3570 simplify_spill(node = prev, regno);
3574 info = jit_classify(node->code);
3575 if (info & jit_cc_a0_jmp)
3576 /* labels are not implicitly added when not taking
3577 * a conditional branch */
3579 if (info & jit_cc_a0_chg) {
3580 if (info & jit_cc_a0_rlh) {
3581 regno = jit_regno(node->u.q.l);
3582 _jitc->values[regno].kind = 0;
3583 ++_jitc->gen[regno];
3584 regno = jit_regno(node->u.q.h);
3585 _jitc->values[regno].kind = 0;
3586 ++_jitc->gen[regno];
3589 regno = jit_regno(node->u.w);
3590 _jitc->values[regno].kind = 0;
3591 ++_jitc->gen[regno];
3594 if (info & jit_cc_a1_chg) {
3595 regno = jit_regno(node->v.w);
3596 _jitc->values[regno].kind = 0;
3597 ++_jitc->gen[regno];
3599 if (info & jit_cc_a2_chg) {
3601 /* Assume registers are not changed */
3602 if (info & jit_cc_a2_rlh) {
3603 regno = jit_regno(node->w.q.l);
3604 _jitc->values[regno].kind = 0;
3605 ++_jitc->gen[regno];
3606 regno = jit_regno(node->w.q.h);
3607 _jitc->values[regno].kind = 0;
3608 ++_jitc->gen[regno];
3612 regno = jit_regno(node->w.w);
3613 _jitc->values[regno].kind = 0;
3614 ++_jitc->gen[regno];
3626 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3631 for (; node != link; node = node->next) {
3632 switch (node->code) {
3633 case jit_code_label: case jit_code_prolog:
3634 /* lack of extra information so cannot say it is undefined */
3635 return (jit_reg_change);
3636 case jit_code_callr: case jit_code_calli:
3637 if (!(jit_class(_rvs[regno].spec) & jit_class_sav))
3638 return (jit_reg_undef);
3641 value = jit_classify(node->code);
3642 /* lack of extra information */
3643 if (value & (jit_cc_a0_jmp|jit_cc_a0_cnd))
3644 return (jit_reg_change);
3645 else if ((value & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
3646 (jit_cc_a0_reg|jit_cc_a0_chg) &&
3647 (((value & jit_cc_a0_rlh) &&
3648 (node->u.q.l == regno || node->u.q.h == regno)) ||
3649 (!(value & jit_cc_a0_rlh) &&
3650 node->u.w == regno)))
3651 return (jit_reg_change);
3652 else if ((value & jit_cc_a1_reg) && node->v.w == regno &&
3653 (value & jit_cc_a1_chg))
3654 return (jit_reg_change);
3655 else if ((value & jit_cc_a2_reg) && node->w.w == regno &&
3656 (value & jit_cc_a2_chg))
3657 return (jit_reg_change);
3661 return (jit_reg_static);
3664 /* most of this could be done at the same time as generating jit, but
3665 * avoid complications on different cpu backends and patch spill/loads
3666 * here, by simulating jit generation */
3668 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3670 if (!jit_regset_tstbit(&_jitc->reglive, regno)) {
3671 jit_regset_setbit(&_jitc->regmask, regno);
3672 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
3673 if (!jit_regset_tstbit(&_jitc->reglive, regno) &&
3674 register_change_p(node->next, node->link, regno) != jit_reg_change)
3682 _patch_registers(jit_state_t *_jit)
3692 _jitc->function = NULL;
3694 jit_reglive_setup();
3695 for (prev = NULL, node = _jitc->head; node; node = next) {
3698 info = jit_classify(node->code);
3699 jit_regarg_set(node, info);
3701 switch (node->code) {
3703 regno = jit_regno(node->u.w);
3704 if (!spill_reglive_p(node, regno)) {
3705 /* register is not live, just remove spill/reload */
3706 jit_regarg_clr(node, info);
3707 node->link->v.w = jit_regload_delete;
3708 del_node(prev, node);
3712 /* try to find a free register of the same class */
3713 spec = jit_class(_rvs[regno].spec) & ~jit_class_arg;
3714 for (value = 0; value < _jitc->reglen; value++) {
3715 if (value != regno &&
3716 ((jit_class(_rvs[value].spec) & spec) &
3717 ~jit_class_arg) == spec &&
3718 !jit_regset_tstbit(&_jitc->regarg, value) &&
3719 !spill_reglive_p(node, value))
3722 if (value < _jitc->reglen) {
3723 jit_regarg_clr(node, info);
3724 patch_register(node->next, node->link,
3725 jit_regno_patch|node->u.w,
3726 jit_regno_patch|value);
3727 /* mark as live just in case there are nested
3728 * register patches, so that next patch will
3729 * not want to use the same register */
3730 jit_regset_setbit(&_jitc->reglive, value);
3731 /* register is not live, just remove spill/reload */
3732 node->link->v.w = jit_regload_isdead;
3733 del_node(prev, node);
3737 /* failed to find a free register */
3738 if (spec & jit_class_gpr) {
3739 if (!_jitc->function->regoff[regno])
3740 _jitc->function->regoff[regno] =
3741 jit_allocai(sizeof(jit_word_t));
3742 #if __WORDSIZE == 32
3743 node->code = jit_code_stxi_i;
3745 node->code = jit_code_stxi_l;
3749 node->code = jit_code_stxi_d;
3750 if (!_jitc->function->regoff[regno])
3751 _jitc->function->regoff[regno] =
3752 jit_allocai(sizeof(jit_float64_t));
3754 node->u.w = _jitc->function->regoff[regno];
3762 regno = jit_regno(node->u.w);
3764 if (node->v.w == jit_regload_isdead)
3765 jit_regset_clrbit(&_jitc->reglive, regno);
3766 del_node(prev, node);
3769 spec = jit_class(_rvs[regno].spec);
3770 if (spec & jit_class_gpr) {
3771 #if __WORDSIZE == 32
3772 node->code = jit_code_ldxi_i;
3774 node->code = jit_code_ldxi_l;
3778 node->code = jit_code_ldxi_d;
3781 node->w.w = _jitc->function->regoff[regno];
3784 case jit_code_prolog:
3785 _jitc->function = _jitc->functions.ptr + node->w.w;
3787 case jit_code_epilog:
3788 _jitc->function = NULL;
3794 jit_regarg_clr(node, info);
3795 /* update register live state */
3802 _patch_register(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3803 jit_int32_t regno, jit_int32_t patch)
3807 for (; node != link; node = node->next) {
3808 value = jit_classify(node->code);
3809 if (value & jit_cc_a0_reg) {
3810 if (value & jit_cc_a0_rlh) {
3811 if (node->u.q.l == regno)
3812 node->u.q.l = patch;
3813 if (node->u.q.h == regno)
3814 node->u.q.h = patch;
3817 if (node->u.w == regno)
3821 if ((value & jit_cc_a1_reg) && node->v.w == regno)
3823 if (value & jit_cc_a2_reg) {
3824 if (value & jit_cc_a2_rlh) {
3825 if (node->w.q.l == regno)
3826 node->w.q.l = patch;
3827 if (node->w.q.h == regno)
3828 node->w.q.h = patch;
3831 if (node->w.w == regno)
3838 #if __BYTE_ORDER == __LITTLE_ENDIAN
3839 # define htonr_us(r0,r1) bswapr_us(r0,r1)
3840 # define htonr_ui(r0,r1) bswapr_ui(r0,r1)
3841 # if __WORDSIZE == 64
3842 # define htonr_ul(r0,r1) bswapr_ul(r0,r1)
3845 # define htonr_us(r0,r1) extr_us(r0,r1)
3846 # if __WORDSIZE == 32
3847 # define htonr_ui(r0,r1) movr(r0,r1)
3849 # define htonr_ui(r0,r1) extr_ui(r0,r1)
3850 # define htonr_ul(r0,r1) movr(r0,r1)
3854 static maybe_unused void
3855 generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3856 static maybe_unused void
3857 generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3858 #if __WORDSIZE == 64
3859 static maybe_unused void
3860 generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3863 #if defined(__i386__) || defined(__x86_64__)
3864 # include "jit_x86.c"
3865 #elif defined(__mips__)
3866 # include "jit_mips.c"
3867 #elif defined(__arm__)
3868 # include "jit_arm.c"
3869 #elif defined(__powerpc__)
3870 # include "jit_ppc.c"
3871 #elif defined(__sparc__)
3872 # include "jit_sparc.c"
3873 #elif defined(__ia64__)
3874 # include "jit_ia64.c"
3875 #elif defined(__hppa__)
3876 # include "jit_hppa.c"
3877 #elif defined(__aarch64__)
3878 # include "jit_aarch64.c"
3879 #elif defined(__s390__) || defined(__s390x__)
3880 # include "jit_s390.c"
3881 #elif defined(__alpha__)
3882 # include "jit_alpha.c"
3883 #elif defined(__riscv)
3884 # include "jit_riscv.c"
3885 #elif defined(__loongarch__)
3886 # include "jit_loongarch.c"
3889 static maybe_unused void
3890 generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3892 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3894 rshi(rn(reg), r1, 8);
3896 andi(rn(reg), rn(reg), 0xff);
3898 orr(r0, r0, rn(reg));
3903 static maybe_unused void
3904 generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3906 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3908 rshi(rn(reg), r1, 16);
3910 bswapr_us(rn(reg), rn(reg));
3912 orr(r0, r0, rn(reg));
3917 #if __WORDSIZE == 64
3918 static maybe_unused void
3919 generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3921 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3923 rshi_u(rn(reg), r1, 32);
3925 bswapr_ui(rn(reg), rn(reg));
3927 orr(r0, r0, rn(reg));