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 check_block_again() _check_block_again(_jit)
71 static jit_bool_t _check_block_again(jit_state_t*);
73 #define do_setup() _do_setup(_jit)
74 static void _do_setup(jit_state_t*);
76 #define jit_setup(block) _jit_setup(_jit, block)
78 _jit_setup(jit_state_t *_jit, jit_block_t *block);
80 #define do_follow(always) _do_follow(_jit, always)
81 static void _do_follow(jit_state_t*, jit_bool_t);
83 #define jit_follow(block) _jit_follow(_jit, block)
85 _jit_follow(jit_state_t *_jit, jit_block_t *block);
87 #define jit_update(node, live, mask) _jit_update(_jit, node, live, mask)
89 _jit_update(jit_state_t *_jit, jit_node_t *node,
90 jit_regset_t *live, jit_regset_t *mask);
92 #define thread_jumps() _thread_jumps(_jit)
94 _thread_jumps(jit_state_t *_jit);
96 #define sequential_labels() _sequential_labels(_jit)
98 _sequential_labels(jit_state_t *_jit);
100 #define split_branches() _split_branches(_jit)
102 _split_branches(jit_state_t *_jit);
104 #define shortcut_jump(prev, node) _shortcut_jump(_jit, prev, node)
106 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
108 #define redundant_jump(prev, node) _redundant_jump(_jit, prev, node)
110 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
113 reverse_jump_code(jit_code_t code);
115 #define reverse_jump(prev, node) _reverse_jump(_jit, prev, node)
117 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
119 #define redundant_store(node, jump) _redundant_store(_jit, node, jump)
121 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump);
123 #define simplify_movr(p, n, k, s) _simplify_movr(_jit, p, n, k, s)
125 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
126 jit_int32_t kind, jit_int32_t size);
128 #define simplify_movi(p, n, k, s) _simplify_movi(_jit, p, n, k, s)
130 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
131 jit_int32_t kind, jit_int32_t size);
133 #define simplify_ldxi(prev, node) _simplify_ldxi(_jit, prev, node)
135 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
137 #define simplify_stxi(prev, node) _simplify_stxi(_jit, prev, node)
139 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
141 #define simplify_spill(node, regno) _simplify_spill(_jit, node, regno)
143 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
145 #define simplify() _simplify(_jit)
147 _simplify(jit_state_t *_jit);
149 #define jit_reg_undef -1
150 #define jit_reg_static 0
151 #define jit_reg_change 1
152 #define register_change_p(n, l, r) _register_change_p(_jit, n, l, r)
154 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
157 #define spill_reglive_p(node, regno) _spill_reglive_p(_jit, node, regno)
159 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
161 #define patch_registers() _patch_registers(_jit)
163 _patch_registers(jit_state_t *_jit);
165 #define patch_register(n,l,r,p) _patch_register(_jit,n,l,r,p)
167 _patch_register(jit_state_t *jit, jit_node_t *node, jit_node_t *link,
168 jit_int32_t regno, jit_int32_t patch);
181 init_jit(const char *progname)
184 jit_init_debug(progname);
196 _jit_get_reg(jit_state_t *_jit, jit_int32_t regspec)
201 spec = regspec & ~(jit_class_chk|jit_class_nospill);
202 if (spec & jit_class_named) {
203 regno = jit_regno(spec);
204 if (jit_regset_tstbit(&_jitc->regsav, regno))
205 /* fail if register is spilled */
207 if (jit_regset_tstbit(&_jitc->regarg, regno))
208 /* fail if register is an argument to current instruction */
210 if (jit_regset_tstbit(&_jitc->reglive, regno)) {
211 if (regspec & jit_class_nospill)
212 /* fail if register is live and should not spill/reload */
216 jit_regset_setbit(&_jitc->regarg, regno);
220 assert(jit_class(spec) != 0);
223 /* search for a free register matching spec */
224 for (regno = 0; regno < _jitc->reglen; regno++) {
225 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
226 !jit_regset_tstbit(&_jitc->regarg, regno) &&
227 !jit_regset_tstbit(&_jitc->reglive, regno))
231 /* search for a register matching spec that is not an argument
232 * for the current instruction */
233 for (regno = 0; regno < _jitc->reglen; regno++) {
234 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
235 !jit_regset_tstbit(&_jitc->regsav, regno) &&
236 !jit_regset_tstbit(&_jitc->regarg, regno) &&
237 !(regspec & jit_class_nospill)) {
239 assert(_jitc->function != NULL);
240 if (spec & jit_class_gpr) {
241 if (!_jitc->function->regoff[regno]) {
242 _jitc->function->regoff[regno] =
243 jit_allocai(sizeof(jit_word_t));
247 /* emit_stxi must not need temporary registers */
248 assert(!_jitc->getreg);
251 emit_stxi(_jitc->function->regoff[regno], JIT_FP, regno);
257 if (!_jitc->function->regoff[regno]) {
258 _jitc->function->regoff[regno] =
259 jit_allocai(sizeof(jit_float64_t));
263 /* emit_stxi must not need temporary registers */
264 assert(!_jitc->getreg);
267 emit_stxi_d(_jitc->function->regoff[regno], JIT_FP, regno);
272 jit_regset_setbit(&_jitc->regsav, regno);
274 jit_regset_setbit(&_jitc->regarg, regno);
275 if (jit_class(_rvs[regno].spec) & jit_class_sav) {
276 /* if will modify callee save registers without a
277 * function prolog, better patch this assertion */
278 assert(_jitc->function != NULL);
279 if (!jit_regset_tstbit(&_jitc->function->regset, regno)) {
280 jit_regset_setbit(&_jitc->function->regset, regno);
289 /* nospill hint only valid during emit" */
290 assert(!(regspec & jit_class_nospill));
291 for (regno = 0; regno < _jitc->reglen; regno++) {
292 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
293 !jit_regset_tstbit(&_jitc->regsav, regno) &&
294 !jit_regset_tstbit(&_jitc->regarg, regno)) {
295 jit_regset_setbit(&_jitc->regarg, regno);
296 jit_regset_setbit(&_jitc->regsav, regno);
298 return (jit_regno_patch|regno);
303 /* Out of hardware registers */
305 assert(regspec & jit_class_chk);
310 _jit_unget_reg(jit_state_t *_jit, jit_int32_t regno)
312 regno = jit_regno(regno);
313 if (jit_regset_tstbit(&_jitc->regsav, regno)) {
316 /* emit_ldxi must not need a temporary register */
317 assert(!_jitc->getreg);
320 if (jit_class(_rvs[regno].spec) & jit_class_gpr)
321 emit_ldxi(regno, JIT_FP, _jitc->function->regoff[regno]);
323 emit_ldxi_d(regno, JIT_FP, _jitc->function->regoff[regno]);
325 /* emit_ldxi must not need a temporary register */
331 jit_regset_clrbit(&_jitc->regsav, regno);
333 #if defined(jit_carry)
334 assert((regno == jit_carry /*&& _NOREG != jit_carry*/) ||
335 jit_regset_tstbit(&_jitc->regarg, regno) != 0);
337 assert(jit_regset_tstbit(&_jitc->regarg, regno) != 0);
339 jit_regset_clrbit(&_jitc->regarg, regno);
343 _jit_callee_save_p(jit_state_t *_jit, jit_int32_t regno)
345 assert(regno >= 0 && regno < JIT_NOREG);
346 return (!!(_rvs[regno].spec & jit_class_sav));
350 _jit_pointer_p(jit_state_t *_jit, jit_pointer_t address)
352 return ((jit_uint8_t *)address >= _jit->code.ptr &&
353 (jit_word_t)address < _jit->pc.w);
358 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
360 u->rl = ~v->rl; u->rh = ~v->rh;
361 u->fl = ~v->fl; u->fh = ~v->fh;
365 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
367 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
368 u->fl = v->fl & w->fl; u->fh = v->fh & w->fh;
372 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
374 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
375 u->fl = v->fl | w->fl; u->fh = v->fh | w->fh;
379 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
381 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
382 u->fl = v->fl ^ w->fl; u->fh = v->fh ^ w->fh;
386 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
388 u->rl = v->rl; u->rh = v->rh;
389 u->fl = v->fl; u->fh = v->fh;
393 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
395 jit_bool_t w = !!(v & (v - 1));
397 assert(v >= 0 && v <= 256);
399 u->rl = u->rh = u->fl = u->fh = -1LL;
401 u->rl = w ? (1LL << v) - 1 : -1LL;
402 u->rh = u->fl = u->fh = 0;
406 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
410 u->rl = u->rh = -1LL;
411 u->fl = w ? (1LL << (v - 128)) - 1 : -1LL;
415 u->rl = u->rh = u->fl = -1LL;
416 u->fh = w ? (1LL << (v - 128)) - 1 : -1LL;
421 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
423 return !((u->rl == v && u->rh == 0 && u->fl == 0 && u->fh == 0));
427 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
430 u->rh = u->fl = u->fh = 0;
434 jit_regset_set_p(jit_regset_t *u)
436 return (u->rl || u->rh || u->fl || u->fh);
440 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
442 assert(bit >= 0 && bit <= 255);
444 set->rl &= ~(1LL << bit);
446 set->rh &= ~(1LL << (bit - 64));
448 set->fl &= ~(1LL << (bit - 128));
450 set->fh &= ~(1LL << (bit - 192));
454 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
456 assert(bit >= 0 && bit <= 255);
458 set->rl |= 1LL << bit;
460 set->rh |= 1LL << (bit - 64);
462 set->fl |= 1LL << (bit - 128);
464 set->fh |= 1LL << (bit - 192);
468 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
470 assert(bit >= 0 && bit <= 255);
472 return (!!(set->rl & (1LL << bit)));
474 return (!!(set->rh & (1LL << (bit - 64))));
476 return (!!(set->fl & (1LL << (bit - 128))));
477 return (!!(set->fh & (1LL << (bit - 192))));
481 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
483 assert(offset >= 0 && offset <= 255);
484 for (; offset < 64; offset++) {
485 if (set->rl & (1LL << offset))
488 for (; offset < 128; offset++) {
489 if (set->rh & (1LL << (offset - 64)))
492 for (; offset < 192; offset++) {
493 if (set->fl & (1LL << (offset - 128)))
496 for (; offset < 256; offset++) {
497 if (set->fh & (1LL << (offset - 192)))
503 #elif __sparc__ && __WORDSIZE == 64
505 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
507 u->rl = ~v->rl; u->rh = ~v->rh;
511 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
513 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
517 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
519 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
523 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
525 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
529 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
531 u->rl = v->rl; u->rh = v->rh;
535 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
537 jit_bool_t w = !!(v & (v - 1));
539 assert(v >= 0 && v <= 128);
541 u->rl = u->rh = -1LL;
543 u->rl = w ? (1LL << v) - 1 : -1LL;
548 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
553 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
555 return !((u->rl == v && u->rh == 0));
559 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
566 jit_regset_set_p(jit_regset_t *u)
568 return (u->rl || u->rh);
572 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
574 assert(bit >= 0 && bit <= 128);
576 set->rl &= ~(1LL << bit);
578 set->rh &= ~(1LL << (bit - 64));
582 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
584 assert(bit >= 0 && bit <= 127);
586 set->rl |= 1LL << bit;
588 set->rh |= 1LL << (bit - 64);
592 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
594 assert(bit >= 0 && bit <= 127);
596 return (!!(set->rl & (1LL << bit)));
598 return (!!(set->rh & (1LL << (bit - 64))));
602 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
604 assert(offset >= 0 && offset <= 127);
605 for (; offset < 64; offset++) {
606 if (set->rl & (1LL << offset))
609 for (; offset < 128; offset++) {
610 if (set->rh & (1LL << (offset - 64)))
618 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
621 assert(offset >= 0 && offset <= 63);
622 if ((mask = *set >> offset)) {
635 _jit_save(jit_state_t *_jit, jit_int32_t reg)
637 reg = jit_regno(reg);
638 assert(!_jitc->realize);
639 _jitc->spill[reg] = jit_new_node_w(jit_code_save, reg);
643 _jit_load(jit_state_t *_jit, jit_int32_t reg)
647 reg = jit_regno(reg);
648 assert(!_jitc->realize);
649 assert(_jitc->spill[reg] != NULL);
650 node = jit_new_node_w(jit_code_load, reg);
651 /* create a path to flag the save/load is not required */
652 node->link = _jitc->spill[reg];
653 node->link->link = node;
654 _jitc->spill[reg] = NULL;
658 hash_data(const void *data, jit_word_t length)
660 const jit_uint8_t *ptr;
662 for (i = key = 0, ptr = data; i < length; i++)
663 key = (key << (key & 1)) ^ ptr[i];
668 _jit_address(jit_state_t *_jit, jit_node_t *node)
671 assert(node != NULL &&
672 /* If a node type that is documented to be a fixed marker */
673 (node->code == jit_code_note || node->code == jit_code_name ||
674 /* If another special fixed marker, returned by jit_indirect() */
675 (node->code == jit_code_label && (node->flag & jit_flag_use) != 0)));
676 return ((jit_pointer_t)node->u.w);
680 _jit_data(jit_state_t *_jit, const void *data,
681 jit_word_t length, jit_int32_t align)
686 assert(!_jitc->realize);
688 /* Ensure there is space even if asking for a duplicate */
689 if (((_jitc->data.offset + 7) & -8) + length > _jit->data.length) {
692 size = (_jit->data.length + length + 4096) & - 4095;
693 assert(size >= _jit->data.length);
694 if (_jitc->data.ptr == NULL)
695 jit_alloc((jit_pointer_t *)&_jitc->data.ptr, size);
697 jit_realloc((jit_pointer_t *)&_jitc->data.ptr,
698 _jit->data.length, size);
699 _jit->data.length = size;
701 if (_jitc->data.table == NULL)
702 jit_alloc((jit_pointer_t *)&_jitc->data.table,
703 (_jitc->data.size = 16) * sizeof(jit_node_t*));
705 key = hash_data(data, length) & (_jitc->data.size - 1);
706 node = _jitc->data.table[key];
707 for (; node; node = node->next) {
708 if (node->v.w == length &&
709 memcmp(_jitc->data.ptr + node->u.w, data, length) == 0)
714 node = jit_new_node_no_link(jit_code_data);
721 _jitc->data.offset = (_jitc->data.offset + 1) & -2;
724 _jitc->data.offset = (_jitc->data.offset + 3) & -4;
727 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
730 node->u.w = _jitc->data.offset;
732 jit_memcpy(_jitc->data.ptr + _jitc->data.offset, data, length);
733 _jitc->data.offset += length;
735 node->next = _jitc->data.table[key];
736 _jitc->data.table[key] = node;
739 /* Rehash if more than 75% used table */
740 if (_jitc->data.count >
741 (_jitc->data.size >> 1) + (_jitc->data.size >> 2) &&
742 (_jitc->data.size << 1) > _jitc->data.size) {
748 jit_alloc((jit_pointer_t *)&hash,
749 (_jitc->data.size << 1) * sizeof(jit_node_t*));
750 for (i = 0; i < _jitc->data.size; i++) {
751 temp = _jitc->data.table[i];
752 for (; temp; temp = next) {
754 key = hash_data(_jitc->data.ptr + temp->u.w, temp->v.w) &
755 ((_jitc->data.size << 1) - 1);
756 temp->next = hash[key];
760 jit_free((jit_pointer_t *)&_jitc->data.table);
761 _jitc->data.table = hash;
762 _jitc->data.size <<= 1;
770 _new_pool(jit_state_t *_jit)
775 if (_jitc->pool.offset >= _jitc->pool.length) {
778 length = _jitc->pool.length + 16;
779 jit_realloc((jit_pointer_t *)&_jitc->pool.ptr,
780 _jitc->pool.length * sizeof(jit_node_t *),
781 length * sizeof(jit_node_t *));
782 _jitc->pool.length = length;
784 jit_alloc((jit_pointer_t *)(_jitc->pool.ptr + _jitc->pool.offset),
785 sizeof(jit_node_t) * 1024);
786 list = _jitc->pool.ptr[_jitc->pool.offset];
787 for (offset = 1; offset < 1024; offset++, list++)
788 list->next = list + 1;
789 list->next = _jitc->list;
790 _jitc->list = _jitc->pool.ptr[_jitc->pool.offset];
791 ++_jitc->pool.offset;
795 _new_node(jit_state_t *_jit, jit_code_t code)
799 if (_jitc->list == NULL)
802 _jitc->list = node->next;
804 node->flag |= jit_flag_synth;
811 static inline jit_node_t *
812 _link_node(jit_state_t *_jit, jit_node_t *node)
815 _jitc->tail->next = node;
818 return (_jitc->tail = node);
822 _del_node(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
825 assert(prev == _jitc->head);
826 _jitc->head = node->next;
829 prev->next = node->next;
830 memset(node, 0, sizeof(jit_node_t));
831 node->next = _jitc->list;
836 _free_node(jit_state_t *_jit, jit_node_t *node)
838 memset(node, 0, sizeof(jit_node_t));
839 node->next = _jitc->list;
844 _del_label(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
848 /* only allow call to del_label on linked labels */
849 block = _jitc->blocks.ptr + node->v.w;
850 assert(block->label == node);
852 /* del_label() should only be called when optimizing.
853 * This will leave an empty block index */
854 jit_regset_del(&block->reglive);
855 jit_regset_del(&block->regmask);
858 /* redundant, should be already true */
859 assert(node->link == NULL);
860 del_node(prev, node);
868 jit_alloc((jit_pointer_t *)&_jit, sizeof(jit_state_t));
869 jit_alloc((jit_pointer_t *)&_jitc, sizeof(jit_compiler_t));
870 jit_regset_new(&_jitc->regarg);
871 jit_regset_new(&_jitc->regsav);
872 jit_regset_new(&_jitc->reglive);
873 jit_regset_new(&_jitc->regmask);
877 jit_alloc((jit_pointer_t *)&_jitc->spill,
878 _jitc->reglen * sizeof(jit_node_t*));
879 jit_alloc((jit_pointer_t *)&_jitc->gen,
880 _jitc->reglen * sizeof(jit_int32_t));
881 jit_alloc((jit_pointer_t *)&_jitc->values,
882 _jitc->reglen * sizeof(jit_value_t));
884 jit_alloc((jit_pointer_t *)&_jitc->patches.ptr,
885 (_jitc->patches.length = 1024) * sizeof(jit_patch_t));
886 jit_alloc((jit_pointer_t *)&_jitc->functions.ptr,
887 (_jitc->functions.length = 16) * sizeof(jit_function_t));
888 jit_alloc((jit_pointer_t *)&_jitc->pool.ptr,
889 (_jitc->pool.length = 16) * sizeof(jit_node_t*));
890 jit_alloc((jit_pointer_t *)&_jitc->blocks.ptr,
891 (_jitc->blocks.length = 16) * sizeof(jit_block_t));
892 #if __arm__ && DISASSEMBLER
893 jit_alloc((jit_pointer_t *)&_jitc->data_info.ptr,
894 (_jitc->data_info.length = 1024) * sizeof(jit_data_info_t));
897 /* allocate at most one extra note in case jit_name() is
898 * never called, or called after adding at least one note */
899 _jit->note.length = 1;
900 _jitc->note.size = sizeof(jit_note_t);
906 _jit_clear_state(jit_state_t *_jit)
908 #if DEVEL_DISASSEMBLER
909 # define jit_really_clear_state() _jit_really_clear_state(_jit)
912 void _jit_really_clear_state(jit_state_t *_jit)
916 jit_function_t *function;
918 /* release memory not required at jit execution time and set
919 * pointers to NULL to explicitly know they are released */
920 _jitc->head = _jitc->tail = NULL;
922 jit_free((jit_pointer_t *)&_jitc->data.table);
923 _jitc->data.size = _jitc->data.count = 0;
925 jit_free((jit_pointer_t *)&_jitc->spill);
926 jit_free((jit_pointer_t *)&_jitc->gen);
927 jit_free((jit_pointer_t *)&_jitc->values);
929 jit_free((jit_pointer_t *)&_jitc->blocks.ptr);
931 jit_free((jit_pointer_t *)&_jitc->patches.ptr);
932 _jitc->patches.offset = _jitc->patches.length = 0;
934 for (offset = 0; offset < _jitc->functions.offset; offset++) {
935 function = _jitc->functions.ptr + offset;
936 jit_free((jit_pointer_t *)&function->regoff);
938 jit_free((jit_pointer_t *)&_jitc->functions.ptr);
939 _jitc->functions.offset = _jitc->functions.length = 0;
940 _jitc->function = NULL;
942 for (offset = 0; offset < _jitc->pool.offset; offset++)
943 jit_free((jit_pointer_t *)(_jitc->pool.ptr + offset));
944 jit_free((jit_pointer_t *)&_jitc->pool.ptr);
945 _jitc->pool.offset = _jitc->pool.length = 0;
948 _jitc->note.head = _jitc->note.tail =
949 _jitc->note.name = _jitc->note.note = NULL;
950 _jitc->note.base = NULL;
952 #if __arm__ && DISASSEMBLER
953 jit_free((jit_pointer_t *)&_jitc->data_info.ptr);
956 #if (__powerpc__ && _CALL_AIXDESC) || __ia64__
957 jit_free((jit_pointer_t *)&_jitc->prolog.ptr);
961 jit_regset_del(&_jitc->regs);
964 jit_free((jit_pointer_t *)&_jitc);
968 _jit_destroy_state(jit_state_t *_jit)
970 #if DEVEL_DISASSEMBLER
971 jit_really_clear_state();
974 if (!_jit->user_code)
975 munmap(_jit->code.ptr, _jit->code.length);
976 if (!_jit->user_data)
977 munmap(_jit->data.ptr, _jit->data.length);
979 jit_free((jit_pointer_t *)&_jit);
983 _jit_synth_inc(jit_state_t *_jit)
985 assert(_jitc->synth < 8);
990 _jit_new_node(jit_state_t *_jit, jit_code_t code)
992 assert(!_jitc->realize);
993 return (link_node(new_node(code)));
997 _jit_new_node_no_link(jit_state_t *_jit, jit_code_t code)
999 assert(!_jitc->realize);
1000 return (new_node(code));
1004 _jit_link_node(jit_state_t *_jit, jit_node_t *node)
1006 assert(!_jitc->realize);
1011 _jit_synth_dec(jit_state_t *_jit)
1013 assert(_jitc->synth > 0);
1018 _jit_new_node_w(jit_state_t *_jit, jit_code_t code,
1021 jit_node_t *node = new_node(code);
1022 assert(!_jitc->realize);
1024 return (link_node(node));
1028 _jit_new_node_f(jit_state_t *_jit, jit_code_t code,
1031 jit_node_t *node = new_node(code);
1032 assert(!_jitc->realize);
1034 return (link_node(node));
1038 _jit_new_node_d(jit_state_t *_jit, jit_code_t code,
1041 jit_node_t *node = new_node(code);
1042 assert(!_jitc->realize);
1044 return (link_node(node));
1048 _jit_new_node_p(jit_state_t *_jit, jit_code_t code,
1051 jit_node_t *node = new_node(code);
1052 assert(!_jitc->realize);
1054 return (link_node(node));
1058 _jit_new_node_ww(jit_state_t *_jit, jit_code_t code,
1059 jit_word_t u, jit_word_t v)
1061 jit_node_t *node = new_node(code);
1062 assert(!_jitc->realize);
1065 return (link_node(node));
1069 _jit_new_node_wp(jit_state_t *_jit, jit_code_t code,
1070 jit_word_t u, jit_pointer_t v)
1072 return (jit_new_node_ww(code, u, (jit_word_t)v));
1076 _jit_new_node_fp(jit_state_t *_jit, jit_code_t code,
1077 jit_float32_t u, jit_pointer_t v)
1079 jit_node_t *node = new_node(code);
1080 assert(!_jitc->realize);
1082 node->v.w = (jit_word_t)v;
1083 return (link_node(node));
1087 _jit_new_node_dp(jit_state_t *_jit, jit_code_t code,
1088 jit_float64_t u, jit_pointer_t v)
1090 jit_node_t *node = new_node(code);
1091 assert(!_jitc->realize);
1093 node->v.w = (jit_word_t)v;
1094 return (link_node(node));
1098 _jit_new_node_pw(jit_state_t *_jit, jit_code_t code,
1099 jit_pointer_t u, jit_word_t v)
1101 return (jit_new_node_ww(code, (jit_word_t)u, v));
1105 _jit_new_node_wf(jit_state_t *_jit, jit_code_t code,
1106 jit_word_t u, jit_float32_t v)
1108 jit_node_t *node = new_node(code);
1109 assert(!_jitc->realize);
1112 return (link_node(node));
1116 _jit_new_node_wd(jit_state_t *_jit, jit_code_t code,
1117 jit_word_t u, jit_float64_t v)
1119 jit_node_t *node = new_node(code);
1120 assert(!_jitc->realize);
1123 return (link_node(node));
1127 _jit_new_node_www(jit_state_t *_jit, jit_code_t code,
1128 jit_word_t u, jit_word_t v, jit_word_t w)
1130 jit_node_t *node = new_node(code);
1131 assert(!_jitc->realize);
1135 return (link_node(node));
1139 _jit_new_node_qww(jit_state_t *_jit, jit_code_t code,
1140 jit_int32_t l, jit_int32_t h,
1141 jit_word_t v, jit_word_t w)
1143 jit_node_t *node = new_node(code);
1144 assert(!_jitc->realize);
1150 return (link_node(node));
1154 _jit_new_node_wwq(jit_state_t *_jit, jit_code_t code,
1155 jit_word_t u, jit_word_t v,
1156 jit_int32_t l, jit_int32_t h)
1158 jit_node_t *node = new_node(code);
1159 assert(!_jitc->realize);
1164 return (link_node(node));
1168 _jit_new_node_wwf(jit_state_t *_jit, jit_code_t code,
1169 jit_word_t u, jit_word_t v, jit_float32_t w)
1171 jit_node_t *node = new_node(code);
1172 assert(!_jitc->realize);
1176 return (link_node(node));
1180 _jit_new_node_wwd(jit_state_t *_jit, jit_code_t code,
1181 jit_word_t u, jit_word_t v, jit_float64_t w)
1183 jit_node_t *node = new_node(code);
1184 assert(!_jitc->realize);
1188 return (link_node(node));
1192 _jit_new_node_pww(jit_state_t *_jit, jit_code_t code,
1193 jit_pointer_t u, jit_word_t v, jit_word_t w)
1195 jit_node_t *node = new_node(code);
1196 assert(!_jitc->realize);
1200 return (link_node(node));
1204 _jit_new_node_pwf(jit_state_t *_jit, jit_code_t code,
1205 jit_pointer_t u, jit_word_t v, jit_float32_t w)
1207 jit_node_t *node = new_node(code);
1208 assert(!_jitc->realize);
1212 return (link_node(node));
1216 _jit_new_node_pwd(jit_state_t *_jit, jit_code_t code,
1217 jit_pointer_t u, jit_word_t v, jit_float64_t w)
1219 jit_node_t *node = new_node(code);
1220 assert(!_jitc->realize);
1224 return (link_node(node));
1228 _jit_label(jit_state_t *_jit)
1232 if (!(node = _jitc->tail) || node->code != jit_code_label) {
1233 node = jit_forward();
1241 _jit_forward(jit_state_t *_jit)
1243 return (jit_new_node_no_link(jit_code_label));
1247 _jit_indirect(jit_state_t *_jit)
1252 node->flag |= jit_flag_use;
1258 _jit_link(jit_state_t *_jit, jit_node_t *node)
1262 assert((node->code == jit_code_label ||
1263 node->code == jit_code_prolog ||
1264 node->code == jit_code_epilog) && !node->next);
1265 jit_link_node(node);
1266 if (_jitc->blocks.offset >= _jitc->blocks.length) {
1269 length = _jitc->blocks.length + 16;
1270 jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr,
1271 _jitc->blocks.length * sizeof(jit_block_t),
1272 length * sizeof(jit_block_t));
1273 _jitc->blocks.length = length;
1275 block = _jitc->blocks.ptr + _jitc->blocks.offset;
1276 block->label = node;
1277 node->v.w = _jitc->blocks.offset;
1278 jit_regset_new(&block->reglive);
1279 jit_regset_new(&block->regmask);
1280 ++_jitc->blocks.offset;
1284 _jit_forward_p(jit_state_t *_jit, jit_node_t *node)
1286 return (node->code == jit_code_label && !node->next && node != _jitc->tail);
1290 _jit_indirect_p(jit_state_t *_jit, jit_node_t *node)
1292 return (node->code == jit_code_label && !!(node->flag & jit_flag_use));
1296 _jit_target_p(jit_state_t *_jit, jit_node_t *node)
1298 return (node->code == jit_code_label && !!node->link);
1302 _jit_prepare(jit_state_t *_jit)
1304 assert(_jitc->function != NULL);
1305 _jitc->function->call.call = jit_call_default;
1306 _jitc->function->call.argi =
1307 _jitc->function->call.argf =
1308 _jitc->function->call.size = 0;
1309 _jitc->prepare = jit_new_node(jit_code_prepare);
1313 _jit_patch(jit_state_t* _jit, jit_node_t *instr)
1317 if (!(label = _jitc->tail) || label->code != jit_code_label)
1318 label = jit_label();
1319 jit_patch_at(instr, label);
1323 _jit_classify(jit_state_t *_jit, jit_code_t code)
1328 case jit_code_data: case jit_code_save: case jit_code_load:
1329 case jit_code_name: case jit_code_label: case jit_code_note:
1330 case jit_code_prolog: case jit_code_ellipsis: case jit_code_va_push:
1331 case jit_code_epilog: case jit_code_ret: case jit_code_prepare:
1334 case jit_code_live: case jit_code_va_end:
1335 case jit_code_retr: case jit_code_retr_f: case jit_code_retr_d:
1336 case jit_code_pushargr: case jit_code_pushargr_f:
1337 case jit_code_pushargr_d:
1338 case jit_code_finishr: /* synthesized will set jit_cc_a0_jmp */
1339 mask = jit_cc_a0_reg;
1341 case jit_code_align: case jit_code_reti: case jit_code_pushargi:
1342 case jit_code_finishi: /* synthesized will set jit_cc_a0_jmp */
1343 mask = jit_cc_a0_int;
1345 case jit_code_reti_f: case jit_code_pushargi_f:
1346 mask = jit_cc_a0_flt;
1348 case jit_code_reti_d: case jit_code_pushargi_d:
1349 mask = jit_cc_a0_dbl;
1351 case jit_code_allocai:
1352 mask = jit_cc_a0_int|jit_cc_a1_int;
1354 case jit_code_arg: case jit_code_arg_f: case jit_code_arg_d:
1355 mask = jit_cc_a0_int|jit_cc_a0_arg;
1357 case jit_code_calli: case jit_code_jmpi:
1358 mask = jit_cc_a0_jmp;
1360 case jit_code_callr: case jit_code_jmpr:
1361 mask = jit_cc_a0_reg|jit_cc_a0_jmp;
1363 case jit_code_retval_c: case jit_code_retval_uc:
1364 case jit_code_retval_s: case jit_code_retval_us:
1365 case jit_code_retval_i: case jit_code_retval_ui:
1366 case jit_code_retval_l:
1367 case jit_code_retval_f: case jit_code_retval_d:
1368 case jit_code_va_start:
1369 mask = jit_cc_a0_reg|jit_cc_a0_chg;
1371 case jit_code_getarg_c: case jit_code_getarg_uc:
1372 case jit_code_getarg_s: case jit_code_getarg_us:
1373 case jit_code_getarg_i: case jit_code_getarg_ui:
1374 case jit_code_getarg_l:
1375 case jit_code_getarg_f: case jit_code_getarg_d:
1376 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_arg;
1378 case jit_code_putargr: case jit_code_putargr_f:
1379 case jit_code_putargr_d:
1380 mask = jit_cc_a0_reg|jit_cc_a1_arg;
1382 case jit_code_putargi:
1383 mask = jit_cc_a0_int|jit_cc_a1_arg;
1385 case jit_code_putargi_f:
1386 mask = jit_cc_a0_flt|jit_cc_a1_arg;
1388 case jit_code_putargi_d:
1389 mask = jit_cc_a0_dbl|jit_cc_a1_arg;
1391 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1392 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1393 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1394 case jit_code_ldi_d:
1395 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int;
1397 case jit_code_movi_f: case jit_code_movi_f_w:
1398 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_flt;
1400 case jit_code_movi_d: case jit_code_movi_d_w:
1401 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_dbl;
1403 case jit_code_movi_d_ww:
1404 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1407 case jit_code_negr: case jit_code_comr: case jit_code_movr:
1408 case jit_code_extr_c: case jit_code_extr_uc: case jit_code_extr_s:
1409 case jit_code_extr_us: case jit_code_extr_i: case jit_code_extr_ui:
1410 case jit_code_truncr_f_i: case jit_code_truncr_f_l:
1411 case jit_code_truncr_d_i: case jit_code_truncr_d_l:
1412 case jit_code_htonr_us: case jit_code_htonr_ui: case jit_code_htonr_ul:
1413 case jit_code_bswapr_us: case jit_code_bswapr_ui: case jit_code_bswapr_ul:
1414 case jit_code_ldr_c: case jit_code_ldr_uc:
1415 case jit_code_ldr_s: case jit_code_ldr_us: case jit_code_ldr_i:
1416 case jit_code_ldr_ui: case jit_code_ldr_l: case jit_code_negr_f:
1417 case jit_code_absr_f: case jit_code_sqrtr_f: case jit_code_movr_f:
1418 case jit_code_extr_f: case jit_code_extr_d_f: case jit_code_ldr_f:
1419 case jit_code_negr_d: case jit_code_absr_d: case jit_code_sqrtr_d:
1420 case jit_code_movr_d: case jit_code_extr_d: case jit_code_extr_f_d:
1421 case jit_code_ldr_d:
1422 case jit_code_movr_w_f: case jit_code_movr_f_w:
1423 case jit_code_movr_w_d: case jit_code_movr_d_w:
1424 case jit_code_va_arg: case jit_code_va_arg_d:
1425 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg;
1427 case jit_code_movr_d_ww:
1428 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1431 case jit_code_addi: case jit_code_addxi: case jit_code_addci:
1432 case jit_code_subi: case jit_code_subxi: case jit_code_subci:
1434 case jit_code_muli: case jit_code_divi: case jit_code_divi_u:
1435 case jit_code_remi: case jit_code_remi_u: case jit_code_andi:
1436 case jit_code_ori: case jit_code_xori: case jit_code_lshi:
1437 case jit_code_rshi: case jit_code_rshi_u: case jit_code_lti:
1438 case jit_code_lti_u: case jit_code_lei: case jit_code_lei_u:
1439 case jit_code_eqi: case jit_code_gei: case jit_code_gei_u:
1440 case jit_code_gti: case jit_code_gti_u: case jit_code_nei:
1441 case jit_code_ldxi_c: case jit_code_ldxi_uc: case jit_code_ldxi_s:
1442 case jit_code_ldxi_us: case jit_code_ldxi_i: case jit_code_ldxi_ui:
1443 case jit_code_ldxi_l: case jit_code_ldxi_f: case jit_code_ldxi_d:
1444 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_int;
1446 case jit_code_qmuli: case jit_code_qmuli_u:
1447 case jit_code_qdivi: case jit_code_qdivi_u:
1448 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1449 jit_cc_a1_reg|jit_cc_a2_int;
1451 case jit_code_addi_f: case jit_code_subi_f: case jit_code_rsbi_f:
1452 case jit_code_muli_f: case jit_code_divi_f: case jit_code_lti_f:
1453 case jit_code_lei_f: case jit_code_eqi_f: case jit_code_gei_f:
1454 case jit_code_gti_f: case jit_code_nei_f: case jit_code_unlti_f:
1455 case jit_code_unlei_f: case jit_code_uneqi_f: case jit_code_ungei_f:
1456 case jit_code_ungti_f: case jit_code_ltgti_f: case jit_code_ordi_f:
1457 case jit_code_unordi_f:
1458 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_flt;
1460 case jit_code_addi_d: case jit_code_subi_d: case jit_code_rsbi_d:
1461 case jit_code_muli_d: case jit_code_divi_d: case jit_code_lti_d:
1462 case jit_code_lei_d: case jit_code_eqi_d: case jit_code_gei_d:
1463 case jit_code_gti_d: case jit_code_nei_d: case jit_code_unlti_d:
1464 case jit_code_unlei_d: case jit_code_uneqi_d: case jit_code_ungei_d:
1465 case jit_code_ungti_d: case jit_code_ltgti_d: case jit_code_ordi_d:
1466 case jit_code_unordi_d:
1467 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_dbl;
1469 case jit_code_addr: case jit_code_addxr: case jit_code_addcr:
1470 case jit_code_subr: case jit_code_subxr: case jit_code_subcr:
1471 case jit_code_mulr: case jit_code_divr: case jit_code_divr_u:
1472 case jit_code_remr: case jit_code_remr_u: case jit_code_andr:
1473 case jit_code_orr: case jit_code_xorr: case jit_code_lshr:
1474 case jit_code_rshr: case jit_code_rshr_u: case jit_code_ltr:
1475 case jit_code_ltr_u: case jit_code_ler: case jit_code_ler_u:
1476 case jit_code_eqr: case jit_code_ger: case jit_code_ger_u:
1477 case jit_code_gtr: case jit_code_gtr_u: case jit_code_ner:
1478 case jit_code_ldxr_c: case jit_code_ldxr_uc: case jit_code_ldxr_s:
1479 case jit_code_ldxr_us: case jit_code_ldxr_i: case jit_code_ldxr_ui:
1480 case jit_code_ldxr_l: case jit_code_addr_f: case jit_code_subr_f:
1481 case jit_code_mulr_f: case jit_code_divr_f: case jit_code_ltr_f:
1482 case jit_code_ler_f: case jit_code_eqr_f: case jit_code_ger_f:
1483 case jit_code_gtr_f: case jit_code_ner_f: case jit_code_unltr_f:
1484 case jit_code_unler_f: case jit_code_uneqr_f: case jit_code_unger_f:
1485 case jit_code_ungtr_f: case jit_code_ltgtr_f: case jit_code_ordr_f:
1486 case jit_code_unordr_f: case jit_code_ldxr_f: case jit_code_addr_d:
1487 case jit_code_subr_d: case jit_code_mulr_d: case jit_code_divr_d:
1488 case jit_code_ltr_d: case jit_code_ler_d: case jit_code_eqr_d:
1489 case jit_code_ger_d: case jit_code_gtr_d: case jit_code_ner_d:
1490 case jit_code_unltr_d: case jit_code_unler_d: case jit_code_uneqr_d:
1491 case jit_code_unger_d: case jit_code_ungtr_d: case jit_code_ltgtr_d:
1492 case jit_code_ordr_d: case jit_code_unordr_d: case jit_code_ldxr_d:
1493 case jit_code_movr_ww_d:
1494 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_reg;
1496 case jit_code_qmulr: case jit_code_qmulr_u:
1497 case jit_code_qdivr: case jit_code_qdivr_u:
1498 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1499 jit_cc_a1_reg|jit_cc_a2_reg;
1501 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1502 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1503 mask = jit_cc_a0_int|jit_cc_a1_reg;
1505 case jit_code_blti: case jit_code_blti_u: case jit_code_blei:
1506 case jit_code_blei_u: case jit_code_beqi: case jit_code_bgei:
1507 case jit_code_bgei_u: case jit_code_bgti: case jit_code_bgti_u:
1508 case jit_code_bnei: case jit_code_bmsi: case jit_code_bmci:
1509 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_int;
1511 case jit_code_blti_f: case jit_code_blei_f: case jit_code_beqi_f:
1512 case jit_code_bgei_f: case jit_code_bgti_f: case jit_code_bnei_f:
1513 case jit_code_bunlti_f: case jit_code_bunlei_f: case jit_code_buneqi_f:
1514 case jit_code_bungei_f: case jit_code_bungti_f: case jit_code_bltgti_f:
1515 case jit_code_bordi_f: case jit_code_bunordi_f:
1516 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_flt;
1518 case jit_code_blti_d: case jit_code_blei_d: case jit_code_beqi_d:
1519 case jit_code_bgei_d: case jit_code_bgti_d: case jit_code_bnei_d:
1520 case jit_code_bunlti_d: case jit_code_bunlei_d: case jit_code_buneqi_d:
1521 case jit_code_bungei_d: case jit_code_bungti_d: case jit_code_bltgti_d:
1522 case jit_code_bordi_d: case jit_code_bunordi_d:
1523 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_dbl;
1525 case jit_code_allocar: /* synthesized instructions make it
1526 * equivalent to jit_cc_a0_chg */
1527 case jit_code_str_c: case jit_code_str_s: case jit_code_str_i:
1528 case jit_code_str_l: case jit_code_str_f: case jit_code_str_d:
1529 mask = jit_cc_a0_reg|jit_cc_a1_reg;
1531 case jit_code_stxi_c: case jit_code_stxi_s: case jit_code_stxi_i:
1532 case jit_code_stxi_l: case jit_code_stxi_f: case jit_code_stxi_d:
1533 mask = jit_cc_a0_int|jit_cc_a1_reg|jit_cc_a2_reg;
1535 case jit_code_bltr: case jit_code_bltr_u: case jit_code_bler:
1536 case jit_code_bler_u: case jit_code_beqr: case jit_code_bger:
1537 case jit_code_bger_u: case jit_code_bgtr: case jit_code_bgtr_u:
1538 case jit_code_bner: case jit_code_bmsr: case jit_code_bmcr:
1539 case jit_code_bltr_f: case jit_code_bler_f: case jit_code_beqr_f:
1540 case jit_code_bger_f: case jit_code_bgtr_f: case jit_code_bner_f:
1541 case jit_code_bunltr_f: case jit_code_bunler_f: case jit_code_buneqr_f:
1542 case jit_code_bunger_f: case jit_code_bungtr_f: case jit_code_bltgtr_f:
1543 case jit_code_bordr_f: case jit_code_bunordr_f:case jit_code_bltr_d:
1544 case jit_code_bler_d: case jit_code_beqr_d: case jit_code_bger_d:
1545 case jit_code_bgtr_d: case jit_code_bner_d: case jit_code_bunltr_d:
1546 case jit_code_bunler_d: case jit_code_buneqr_d: case jit_code_bunger_d:
1547 case jit_code_bungtr_d: case jit_code_bltgtr_d: case jit_code_bordr_d:
1548 case jit_code_bunordr_d:
1549 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_reg;
1551 case jit_code_boaddi: case jit_code_boaddi_u: case jit_code_bxaddi:
1552 case jit_code_bxaddi_u: case jit_code_bosubi: case jit_code_bosubi_u:
1553 case jit_code_bxsubi: case jit_code_bxsubi_u:
1554 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_int;
1556 case jit_code_stxr_c: case jit_code_stxr_s: case jit_code_stxr_i:
1557 case jit_code_stxr_l: case jit_code_stxr_f: case jit_code_stxr_d:
1558 mask = jit_cc_a0_reg|jit_cc_a1_reg|jit_cc_a2_reg;
1560 case jit_code_boaddr: case jit_code_boaddr_u: case jit_code_bxaddr:
1561 case jit_code_bxaddr_u: case jit_code_bosubr: case jit_code_bosubr_u:
1562 case jit_code_bxsubr: case jit_code_bxsubr_u:
1563 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_reg;
1565 case jit_code_movnr: case jit_code_movzr:
1566 mask = jit_cc_a0_reg|jit_cc_a0_cnd|jit_cc_a1_reg|jit_cc_a2_reg;
1569 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|
1570 jit_cc_a2_reg|jit_cc_a2_rlh;
1573 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int|
1574 jit_cc_a2_reg|jit_cc_a2_rlh;
1584 _jit_patch_abs(jit_state_t *_jit, jit_node_t *instr, jit_pointer_t address)
1588 switch (instr->code) {
1589 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1590 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1591 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1592 case jit_code_ldi_d:
1593 instr->v.p = address;
1595 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1596 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1597 instr->u.p = address;
1600 mask = jit_classify(instr->code);
1601 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1602 instr->u.p = address;
1607 _jit_patch_at(jit_state_t *_jit, jit_node_t *instr, jit_node_t *label)
1611 assert(!(instr->flag & jit_flag_node));
1612 instr->flag |= jit_flag_node;
1613 switch (instr->code) {
1615 assert(label->code == jit_code_label ||
1616 label->code == jit_code_data);
1618 if (label->code == jit_code_data)
1619 instr->flag |= jit_flag_data;
1622 assert(label->code == jit_code_label ||
1623 label->code == jit_code_epilog);
1627 mask = jit_classify(instr->code);
1628 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1629 assert(label->code == jit_code_label);
1633 /* link field is used as list of nodes associated with a given label */
1634 instr->link = label->link;
1635 label->link = instr;
1639 _do_setup(jit_state_t *_jit)
1644 /* create initial mapping of live register values
1645 * at the start of a basic block */
1646 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1647 block = _jitc->blocks.ptr + offset;
1648 if (!block->label || block->label->code == jit_code_epilog)
1655 _block_update_set(jit_state_t *_jit,
1656 jit_block_t *block, jit_block_t *target)
1658 jit_regset_t regmask;
1660 jit_regset_ior(®mask, &block->reglive, &target->reglive);
1661 jit_regset_and(®mask, ®mask, &block->regmask);
1662 if (jit_regset_set_p(®mask)) {
1663 jit_regset_ior(&block->reglive, &block->reglive, ®mask);
1664 jit_regset_and(®mask, &block->reglive, &block->regmask);
1665 jit_regset_com(®mask, ®mask);
1666 jit_regset_and(&block->regmask, &block->regmask, ®mask);
1674 _check_block_again(jit_state_t *_jit)
1678 jit_node_t *node, *label;
1679 jit_block_t *block, *target;
1682 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1683 block = _jitc->blocks.ptr + offset;
1689 /* If no block changed state */
1696 for (node = _jitc->head; node; node = node->next) {
1697 /* Special jumps that match jit_cc_a0_jmp */
1698 if (node->code == jit_code_calli || node->code == jit_code_callr)
1701 /* Remember current label */
1702 if (node->code == jit_code_label ||
1703 node->code == jit_code_prolog ||
1704 node->code == jit_code_epilog) {
1706 /* If previous block does not pass through */
1707 if (!(node->flag & jit_flag_head))
1710 target = _jitc->blocks.ptr + node->v.w;
1711 /* Update if previous block pass through */
1712 if (block && block->again && block_update_set(target, block))
1718 /* If not the first jmpi */
1720 /* If a jump to dynamic address or if a jump to raw address */
1721 if (!(jit_classify(node->code) & jit_cc_a0_jmp) ||
1722 !(node->flag & jit_flag_node))
1725 /* Mark predecessor needs updating due to target change */
1726 target = _jitc->blocks.ptr + label->v.w;
1727 if (target->again && block_update_set(block, target))
1738 _do_follow(jit_state_t *_jit, jit_bool_t always)
1743 /* set live state of registers not referenced in a block, but
1744 * referenced in a jump target or normal flow */
1745 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1746 block = _jitc->blocks.ptr + offset;
1747 if (!block->label || block->label->code == jit_code_epilog)
1749 if (always || block->again) {
1757 _jit_optimize(jit_state_t *_jit)
1767 _jitc->function = NULL;
1770 sequential_labels();
1779 /* Figure out labels that are only reached with a jump
1780 * and is required to do a simple redundant_store removal
1781 * on jit_beqi below */
1783 for (node = _jitc->head; node; node = node->next) {
1784 switch (node->code) {
1785 case jit_code_label:
1787 node->flag |= jit_flag_head;
1789 case jit_code_jmpi: case jit_code_jmpr:
1790 case jit_code_epilog:
1793 case jit_code_data: case jit_code_note:
1801 for (node = _jitc->head; node; node = node->next) {
1802 mask = jit_classify(node->code);
1803 if (mask & jit_cc_a0_reg)
1804 node->u.w &= ~jit_regno_patch;
1805 if (mask & jit_cc_a1_reg)
1806 node->v.w &= ~jit_regno_patch;
1807 if (mask & jit_cc_a2_reg)
1808 node->w.w &= ~jit_regno_patch;
1809 if (node->code == jit_code_beqi) {
1810 if (redundant_store(node, 1)) {
1811 block = _jitc->blocks.ptr + ((jit_node_t *)node->u.n)->v.w;
1816 else if (node->code == jit_code_bnei) {
1817 if (redundant_store(node, 0)) {
1818 block = _jitc->blocks.ptr + ((jit_node_t *)node->u.n)->v.w;
1826 todo = check_block_again();
1828 /* If instructions were removed or first pass did modify the entry
1829 * state of any block */
1835 /* If any block again has the entry state modified. */
1836 todo = check_block_again();
1840 for (node = _jitc->head; node; node = node->next) {
1841 mask = jit_classify(node->code);
1842 if (mask & jit_cc_a0_reg)
1843 node->u.w &= ~jit_regno_patch;
1844 if (mask & jit_cc_a1_reg)
1845 node->v.w &= ~jit_regno_patch;
1846 if (mask & jit_cc_a2_reg)
1847 node->w.w &= ~jit_regno_patch;
1848 if (node->code == jit_code_prolog)
1849 _jitc->function = _jitc->functions.ptr + node->w.w;
1850 else if(node->code == jit_code_epilog)
1851 _jitc->function = NULL;
1854 if (mask & jit_cc_a0_flt) {
1855 node->u.p = jit_data(&node->u.f, sizeof(jit_float32_t), 4);
1856 node->flag |= jit_flag_node | jit_flag_data;
1858 else if (mask & jit_cc_a0_dbl) {
1859 node->u.p = jit_data(&node->u.d, sizeof(jit_float64_t), 8);
1860 node->flag |= jit_flag_node | jit_flag_data;
1862 else if (mask & jit_cc_a1_flt) {
1863 node->v.p = jit_data(&node->v.f, sizeof(jit_float32_t), 4);
1864 node->flag |= jit_flag_node | jit_flag_data;
1866 else if (mask & jit_cc_a1_dbl) {
1867 node->v.p = jit_data(&node->v.d, sizeof(jit_float64_t), 8);
1868 node->flag |= jit_flag_node | jit_flag_data;
1870 else if (mask & jit_cc_a2_flt) {
1871 node->w.p = jit_data(&node->w.f, sizeof(jit_float32_t), 4);
1872 node->flag |= jit_flag_node | jit_flag_data;
1874 else if (mask & jit_cc_a2_dbl) {
1875 node->w.p = jit_data(&node->w.d, sizeof(jit_float64_t), 8);
1876 node->flag |= jit_flag_node | jit_flag_data;
1879 if (_jitc->function) {
1880 if ((mask & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
1881 (jit_cc_a0_reg|jit_cc_a0_chg)) {
1882 if (mask & jit_cc_a0_rlh) {
1883 jit_regset_setbit(&_jitc->function->regset,
1884 jit_regno(node->u.q.l));
1885 jit_regset_setbit(&_jitc->function->regset,
1886 jit_regno(node->u.q.h));
1889 jit_regset_setbit(&_jitc->function->regset,
1890 jit_regno(node->u.w));
1892 if ((mask & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
1893 (jit_cc_a1_reg|jit_cc_a1_chg))
1894 jit_regset_setbit(&_jitc->function->regset,
1895 jit_regno(node->v.w));
1896 if ((mask & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
1897 (jit_cc_a2_reg|jit_cc_a2_chg))
1898 jit_regset_setbit(&_jitc->function->regset,
1899 jit_regno(node->w.w));
1906 _jit_reglive(jit_state_t *_jit, jit_node_t *node)
1912 switch (node->code) {
1913 case jit_code_label: case jit_code_prolog: case jit_code_epilog:
1914 block = _jitc->blocks.ptr + node->v.w;
1915 jit_regset_set(&_jitc->reglive, &block->reglive);
1917 case jit_code_callr:
1918 value = jit_regno(node->u.w);
1919 if (!(node->u.w & jit_regno_patch)) {
1920 jit_regset_setbit(&_jitc->reglive, value);
1922 case jit_code_calli:
1923 for (value = 0; value < _jitc->reglen; value++) {
1924 spec = jit_class(_rvs[value].spec);
1925 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
1926 jit_regset_setbit(&_jitc->reglive, value);
1927 else if (!(spec & jit_class_sav))
1928 jit_regset_clrbit(&_jitc->reglive, value);
1932 value = jit_classify(node->code);
1933 if (value & jit_cc_a0_reg) {
1934 if (value & jit_cc_a0_rlh) {
1935 if (!(node->u.q.l & jit_regno_patch)) {
1936 if (value & jit_cc_a0_chg) {
1937 jit_regset_clrbit(&_jitc->reglive, node->u.q.l);
1938 jit_regset_setbit(&_jitc->regmask, node->u.q.l);
1941 jit_regset_setbit(&_jitc->reglive, node->u.q.l);
1943 if (!(node->u.q.h & jit_regno_patch)) {
1944 if (value & jit_cc_a0_chg) {
1945 jit_regset_clrbit(&_jitc->reglive, node->u.q.h);
1946 jit_regset_setbit(&_jitc->regmask, node->u.q.h);
1949 jit_regset_setbit(&_jitc->reglive, node->u.q.h);
1953 if (!(node->u.w & jit_regno_patch)) {
1954 if (value & jit_cc_a0_chg) {
1955 jit_regset_clrbit(&_jitc->reglive, node->u.w);
1956 jit_regset_setbit(&_jitc->regmask, node->u.w);
1959 jit_regset_setbit(&_jitc->reglive, node->u.w);
1963 if ((value & jit_cc_a1_reg) && !(node->v.w & jit_regno_patch)) {
1964 if (value & jit_cc_a1_chg) {
1965 jit_regset_clrbit(&_jitc->reglive, node->v.w);
1966 jit_regset_setbit(&_jitc->regmask, node->v.w);
1969 jit_regset_setbit(&_jitc->reglive, node->v.w);
1971 if (value & jit_cc_a2_reg) {
1972 if (value & jit_cc_a2_rlh) {
1973 /* Assume registers are not changed */
1974 if (!(node->w.q.l & jit_regno_patch))
1975 jit_regset_setbit(&_jitc->reglive, node->w.q.l);
1976 if (!(node->w.q.h & jit_regno_patch))
1977 jit_regset_setbit(&_jitc->reglive, node->w.q.h);
1980 if (!(node->w.w & jit_regno_patch)) {
1981 if (value & jit_cc_a2_chg) {
1982 jit_regset_clrbit(&_jitc->reglive, node->w.w);
1983 jit_regset_setbit(&_jitc->regmask, node->w.w);
1986 jit_regset_setbit(&_jitc->reglive, node->w.w);
1990 if (jit_regset_set_p(&_jitc->regmask)) {
1991 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
1992 if (jit_regset_set_p(&_jitc->regmask)) {
1993 /* any unresolved live state is considered as live */
1994 jit_regset_ior(&_jitc->reglive,
1995 &_jitc->reglive, &_jitc->regmask);
1996 jit_regset_set_ui(&_jitc->regmask, 0);
2004 _jit_regarg_set(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
2009 if (value & jit_cc_a0_reg) {
2010 if (value & jit_cc_a0_rlh) {
2011 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.l));
2012 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.h));
2015 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.w));
2017 if (value & jit_cc_a1_reg)
2018 jit_regset_setbit(&_jitc->regarg, jit_regno(node->v.w));
2019 if (value & jit_cc_a2_reg) {
2020 if (value & jit_cc_a2_rlh) {
2021 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.l));
2022 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.h));
2025 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.w));
2030 _jit_regarg_clr(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
2033 jit_size_collect(node);
2035 if (value & jit_cc_a0_reg) {
2036 if (value & jit_cc_a0_rlh) {
2037 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.l));
2038 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.h));
2041 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.w));
2043 if (value & jit_cc_a1_reg)
2044 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->v.w));
2045 if (value & jit_cc_a2_reg) {
2046 if (value & jit_cc_a2_rlh) {
2047 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.l));
2048 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.h));
2051 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.w));
2056 _jit_realize(jit_state_t *_jit)
2058 assert(!_jitc->realize);
2059 if (_jitc->function)
2064 /* ensure it is aligned */
2065 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
2068 /* Heuristic to guess code buffer size */
2070 _jit->code.length = _jitc->pool.length * 1024 * _jitc->mult;
2072 _jit->code.length = jit_get_size();
2077 _jit_dataset(jit_state_t *_jit)
2086 assert(!_jitc->dataset);
2088 assert(_jit->user_data);
2090 if (!_jit->user_data) {
2092 /* create read only data buffer */
2093 _jit->data.length = (_jitc->data.offset +
2094 /* reserve space for annotations */
2095 _jitc->note.size + 4095) & -4096;
2097 mmap_fd = open("/dev/zero", O_RDWR);
2099 _jit->data.ptr = mmap(NULL, _jit->data.length,
2100 PROT_READ | PROT_WRITE,
2101 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2102 assert(_jit->data.ptr != MAP_FAILED);
2107 #endif /* !HAVE_MMAP */
2109 if (!_jitc->no_data)
2110 jit_memcpy(_jit->data.ptr, _jitc->data.ptr, _jitc->data.offset);
2112 if (_jitc->no_note) {
2113 /* Space for one note is always allocated, so revert it here
2114 * if after jit_new_state was called, it is also requested to
2115 * not generate annotation information */
2116 _jit->note.length = 0;
2117 _jitc->note.size = 0;
2120 _jitc->note.base = _jit->data.ptr;
2121 if (!_jitc->no_data)
2122 _jitc->note.base += _jitc->data.offset;
2123 memset(_jitc->note.base, 0, _jitc->note.size);
2126 if (_jit->user_data)
2127 /* Need the temporary hashed data until jit_emit is finished */
2128 ptr = _jitc->no_data ? _jitc->data.ptr : _jit->data.ptr;
2130 ptr = _jit->data.ptr;
2131 /* Temporary hashed data no longer required */
2132 jit_free((jit_pointer_t *)&_jitc->data.ptr);
2135 for (offset = 0; offset < _jitc->data.size; offset++) {
2136 for (node = _jitc->data.table[offset]; node; node = node->next) {
2137 node->flag |= jit_flag_patch;
2138 node->u.w = (jit_word_t)(ptr + node->u.w);
2146 _jit_get_code(jit_state_t *_jit, jit_word_t *length)
2148 assert(_jitc->realize);
2151 /* If code already generated, return exact size of code */
2152 *length = _jit->pc.uc - _jit->code.ptr;
2154 /* Else return current size of the code buffer */
2155 *length = _jit->code.length;
2158 return (_jit->code.ptr);
2162 _jit_set_code(jit_state_t *_jit, jit_pointer_t ptr, jit_word_t length)
2164 assert(_jitc->realize);
2165 _jit->code.ptr = ptr;
2166 _jit->code.length = length;
2167 _jit->user_code = 1;
2171 _jit_get_data(jit_state_t *_jit, jit_word_t *data_size, jit_word_t *note_size)
2173 assert(_jitc->realize);
2175 *data_size = _jitc->data.offset;
2177 *note_size = _jitc->note.size;
2178 return (_jit->data.ptr);
2182 _jit_set_data(jit_state_t *_jit, jit_pointer_t ptr,
2183 jit_word_t length, jit_word_t flags)
2185 assert(_jitc->realize);
2186 if (flags & JIT_DISABLE_DATA)
2189 assert(length >= _jitc->data.offset);
2190 if (flags & JIT_DISABLE_NOTE)
2193 if (flags & JIT_DISABLE_DATA)
2194 assert(length >= _jitc->note.size);
2196 assert(length >= _jitc->data.offset + _jitc->note.size);
2198 _jit->data.ptr = ptr;
2199 _jit->data.length = length;
2200 _jit->user_data = 1;
2204 _jit_emit(jit_state_t *_jit)
2213 int mmap_prot, mmap_flags;
2215 if (!_jitc->realize)
2218 if (!_jitc->dataset)
2224 assert(_jit->user_code);
2226 if (!_jit->user_code) {
2227 mmap_prot = PROT_READ | PROT_WRITE;
2229 mmap_prot |= PROT_EXEC;
2232 mmap_prot = PROT_MPROTECT(mmap_prot);
2235 mmap_flags = MAP_PRIVATE;
2237 mmap_flags |= MAP_ANON;
2239 mmap_fd = open("/dev/zero", O_RDWR);
2241 _jit->code.ptr = mmap(NULL, _jit->code.length,
2242 mmap_prot, mmap_flags, mmap_fd, 0);
2243 assert(_jit->code.ptr != MAP_FAILED);
2245 #endif /* !HAVE_MMAP */
2246 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2247 jit_get_max_instr();
2248 _jit->pc.uc = _jit->code.ptr;
2252 result = mprotect(_jit->code.ptr, _jit->code.length,
2253 PROT_READ | PROT_WRITE);
2254 assert(result == 0);
2256 if ((code = emit_code()) == NULL) {
2257 _jitc->patches.offset = 0;
2258 for (node = _jitc->head; node; node = node->next) {
2260 (node->code == jit_code_label ||
2261 node->code == jit_code_epilog))
2262 node->flag &= ~jit_flag_patch;
2265 assert(_jit->user_code);
2267 if (_jit->user_code)
2271 length = _jitc->pool.length * 1024 * _jitc->mult;
2273 /* Should only happen on very special cases */
2274 length = _jit->code.length + 4096;
2278 munmap(_jit->code.ptr, _jit->code.length);
2283 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2284 _jit->code.ptr, length, 0);
2286 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2287 length, MREMAP_MAYMOVE, NULL);
2290 _jit->code.ptr = mmap(NULL, length,
2291 PROT_EXEC | PROT_READ | PROT_WRITE,
2292 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2295 assert(_jit->code.ptr != MAP_FAILED);
2296 _jit->code.length = length;
2297 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2298 jit_get_max_instr();
2299 _jit->pc.uc = _jit->code.ptr;
2300 #endif /* !HAVE_MMAP */
2307 if (!_jit->user_code)
2312 if (!_jitc->no_note)
2315 if (_jit->user_data)
2316 jit_free((jit_pointer_t *)&_jitc->data.ptr);
2319 result = mprotect(_jit->data.ptr,
2320 _jit->data.length, PROT_READ);
2321 assert(result == 0);
2323 if (!_jit->user_code) {
2324 length = _jit->pc.uc - _jit->code.ptr;
2325 # if __riscv && __WORDSIZE == 64
2326 /* FIXME should start adding consts at a page boundary */
2327 length -= _jitc->consts.hash.count * sizeof(jit_word_t);
2329 result = mprotect(_jit->code.ptr, length, PROT_READ | PROT_EXEC);
2330 assert(result == 0);
2332 #endif /* HAVE_MMAP */
2334 return (_jit->code.ptr);
2340 _jit_frame(jit_state_t *_jit, jit_int32_t frame)
2342 jit_trampoline(frame, 1);
2346 _jit_tramp(jit_state_t *_jit, jit_int32_t frame)
2348 jit_trampoline(frame, 0);
2352 _jit_trampoline(jit_state_t *_jit, jit_int32_t frame, jit_bool_t prolog)
2356 /* Must be called after prolog, actually, just to simplify
2357 * tests and know there is a current function and that
2358 * _jitc->function->self.aoff is at the before any alloca value */
2359 assert(_jitc->tail && _jitc->tail->code == jit_code_prolog);
2361 /* + 24 for 3 possible spilled temporaries (that could be a double) */
2363 #if defined(__hppa__)
2364 frame += _jitc->function->self.aoff;
2366 frame -= _jitc->function->self.aoff;
2368 _jitc->function->frame = frame;
2370 _jitc->function->define_frame = 1;
2372 _jitc->function->assume_frame = 1;
2373 for (regno = 0; regno < _jitc->reglen; regno++)
2374 if (jit_class(_rvs[regno].spec) & jit_class_sav)
2375 jit_regset_setbit(&_jitc->function->regset, regno);
2378 /* Compute initial reglive and regmask set values of a basic block.
2379 * reglive is the set of known live registers
2380 * regmask is the set of registers not referenced in the block
2381 * Registers in regmask might be live.
2384 _jit_setup(jit_state_t *_jit, jit_block_t *block)
2388 unsigned long value;
2390 jit_regset_set_mask(&block->regmask, _jitc->reglen);
2391 for (value = 0; value < _jitc->reglen; ++value)
2392 if (!(jit_class(_rvs[value].spec) & (jit_class_gpr|jit_class_fpr)))
2393 jit_regset_clrbit(&block->regmask, value);
2395 for (node = block->label->next; node; node = node->next) {
2396 switch (node->code) {
2397 case jit_code_label: case jit_code_prolog:
2398 case jit_code_epilog:
2401 /* Check argument registers in reverse order to properly
2402 * handle registers that are both, argument and result */
2403 value = jit_classify(node->code);
2404 if ((value & jit_cc_a2_reg) &&
2405 !(node->w.w & jit_regno_patch) &&
2406 jit_regset_tstbit(&block->regmask, node->w.w)) {
2407 live = !(value & jit_cc_a2_chg);
2408 jit_regset_clrbit(&block->regmask, node->w.w);
2410 jit_regset_setbit(&block->reglive, node->w.w);
2412 if ((value & jit_cc_a1_reg) &&
2413 !(node->v.w & jit_regno_patch) &&
2414 jit_regset_tstbit(&block->regmask, node->v.w)) {
2415 live = !(value & jit_cc_a1_chg);
2416 jit_regset_clrbit(&block->regmask, node->v.w);
2418 jit_regset_setbit(&block->reglive, node->v.w);
2420 if (value & jit_cc_a0_reg) {
2421 live = !(value & jit_cc_a0_chg);
2422 if (value & jit_cc_a0_rlh) {
2423 if (!(node->u.q.l & jit_regno_patch) &&
2424 jit_regset_tstbit(&block->regmask, node->u.q.l)) {
2425 jit_regset_clrbit(&block->regmask, node->u.q.l);
2427 jit_regset_setbit(&block->reglive, node->u.q.l);
2429 if (!(node->u.q.h & jit_regno_patch) &&
2430 jit_regset_tstbit(&block->regmask, node->u.q.h)) {
2431 jit_regset_clrbit(&block->regmask, node->u.q.h);
2433 jit_regset_setbit(&block->reglive, node->u.q.h);
2437 if (!(node->u.w & jit_regno_patch) &&
2438 jit_regset_tstbit(&block->regmask, node->u.w)) {
2439 jit_regset_clrbit(&block->regmask, node->u.w);
2441 jit_regset_setbit(&block->reglive, node->u.w);
2450 /* Update regmask and reglive of blocks at entry point of branch targets
2451 * or normal flow that have a live register not used in this block.
2454 _jit_follow(jit_state_t *_jit, jit_block_t *block)
2460 unsigned long value;
2462 jit_regset_t reglive;
2463 jit_regset_t regmask;
2464 jit_regset_t regtemp;
2466 jit_regset_set(®live, &block->reglive);
2467 jit_regset_set(®mask, &block->regmask);
2468 for (node = block->label->next; node; node = node->next) {
2469 switch (node->code) {
2470 case jit_code_label:
2471 /* Do not consider jmpi and jmpr cannot jump to the
2472 * next instruction. */
2473 next = _jitc->blocks.ptr + node->v.w;
2474 /* Set of live registers in next block that are at unknown
2475 * state in this block. */
2476 jit_regset_and(®temp, ®mask, &next->reglive);
2477 if (jit_regset_set_p(®temp)) {
2478 /* Add live state of next block to current block. */
2479 jit_regset_ior(&block->reglive, &block->reglive, ®temp);
2480 /* Remove from unknown state bitmask. */
2481 jit_regset_com(®temp, ®temp);
2482 jit_regset_and(&block->regmask, &block->regmask, ®temp);
2485 case jit_code_prolog:
2486 case jit_code_epilog:
2488 case jit_code_callr:
2489 value = jit_regno(node->u.w);
2490 if (!(node->u.w & jit_regno_patch)) {
2491 if (jit_regset_tstbit(®mask, value)) {
2492 jit_regset_clrbit(®mask, value);
2493 jit_regset_setbit(®live, value);
2496 case jit_code_calli:
2497 for (value = 0; value < _jitc->reglen; ++value) {
2498 value = jit_regset_scan1(®mask, value);
2499 if (value >= _jitc->reglen)
2501 spec = jit_class(_rvs[value].spec);
2502 if (!(spec & jit_class_sav))
2503 jit_regset_clrbit(®mask, value);
2504 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2505 jit_regset_setbit(®live, value);
2509 value = jit_classify(node->code);
2510 if (value & jit_cc_a2_reg) {
2511 if (value & jit_cc_a2_rlh) {
2512 if (!(node->w.q.l & jit_regno_patch)) {
2513 /* Assume register is not changed */
2514 if (jit_regset_tstbit(®mask, node->w.q.l))
2515 jit_regset_clrbit(®mask, node->w.q.l);
2517 if (!(node->w.q.h & jit_regno_patch)) {
2518 if (jit_regset_tstbit(®mask, node->w.q.h))
2519 jit_regset_clrbit(®mask, node->w.q.h);
2523 if (value & jit_cc_a2_reg) {
2524 if (!(node->w.w & jit_regno_patch)) {
2525 if (jit_regset_tstbit(®mask, node->w.w)) {
2526 jit_regset_clrbit(®mask, node->w.w);
2527 if (!(value & jit_cc_a2_chg))
2528 jit_regset_setbit(®live, node->w.w);
2534 if (value & jit_cc_a1_reg) {
2535 if (!(node->v.w & jit_regno_patch)) {
2536 if (jit_regset_tstbit(®mask, node->v.w)) {
2537 jit_regset_clrbit(®mask, node->v.w);
2538 if (!(value & jit_cc_a1_chg))
2539 jit_regset_setbit(®live, node->v.w);
2543 if (value & jit_cc_a0_reg) {
2544 if (value & jit_cc_a0_rlh) {
2545 if (!(node->u.q.l & jit_regno_patch)) {
2546 if (jit_regset_tstbit(®mask, node->u.q.l)) {
2547 jit_regset_clrbit(®mask, node->u.q.l);
2548 if (!(value & jit_cc_a0_chg))
2549 jit_regset_setbit(®live, node->u.q.l);
2552 if (!(node->u.q.h & jit_regno_patch)) {
2553 if (jit_regset_tstbit(®mask, node->u.q.h)) {
2554 jit_regset_clrbit(®mask, node->u.q.h);
2555 if (!(value & jit_cc_a0_chg))
2556 jit_regset_setbit(®live, node->u.q.h);
2561 if (!(node->u.w & jit_regno_patch)) {
2562 if (jit_regset_tstbit(®mask, node->u.w)) {
2563 jit_regset_clrbit(®mask, node->u.w);
2564 if (!(value & jit_cc_a0_chg))
2565 jit_regset_setbit(®live, node->u.w);
2570 if (value & jit_cc_a0_jmp) {
2571 if (node->flag & jit_flag_node) {
2573 /* Do not consider jmpi and jmpr cannot jump to the
2574 * next instruction. */
2575 next = _jitc->blocks.ptr + label->v.w;
2576 jit_regset_and(®temp, ®mask, &next->reglive);
2577 if (jit_regset_set_p(®temp)) {
2578 /* Add live state. */
2579 jit_regset_ior(&block->reglive,
2580 &block->reglive, ®temp);
2581 /* Remove from unknown state bitmask. */
2582 jit_regset_com(®temp, ®temp);
2583 jit_regset_and(&block->regmask,
2584 &block->regmask, ®temp);
2589 /* Jump to unknown location.
2590 * This is a pitfall of the implementation.
2591 * Only jmpi to not a jit code should reach here,
2592 * or a jmpr of a computed address.
2593 * Because the implementation needs jit_class_nospill
2594 * registers, must treat jmpr as a function call. This
2595 * means that only JIT_Vn registers can be trusted on
2598 jit_regset_set_ui(®mask, 0);
2599 for (regno = 0; regno < _jitc->reglen; regno++) {
2600 spec = jit_class(_rvs[regno].spec);
2601 if ((spec & (jit_class_gpr|jit_class_fpr)) &&
2602 (spec & jit_class_sav))
2603 jit_regset_setbit(®mask, regno);
2605 /* Assume non callee save registers are live due
2606 * to jump to unknown location. */
2607 /* Treat all callee save as live. */
2608 jit_regset_ior(&block->reglive, ®live, ®mask);
2609 /* Treat anything else as dead. */
2618 /* Follow code generation up to finding a label or end of code.
2619 * When finding a label, update the set of live registers.
2620 * On branches, update based on taken branch or normal flow.
2623 _jit_update(jit_state_t *_jit, jit_node_t *node,
2624 jit_regset_t *live, jit_regset_t *mask)
2628 unsigned long value;
2631 jit_regset_t regtemp;
2633 for (; node; node = node->next) {
2634 if (jit_regset_set_p(mask) == 0)
2636 switch (node->code) {
2637 case jit_code_label:
2638 block = _jitc->blocks.ptr + node->v.w;
2639 jit_regset_and(®temp, mask, &block->reglive);
2640 if (jit_regset_set_p(®temp)) {
2641 /* Add live state. */
2642 jit_regset_ior(live, live, ®temp);
2643 /* Remove from unknown state bitmask. */
2644 jit_regset_com(®temp, ®temp);
2645 jit_regset_and(mask, mask, ®temp);
2648 case jit_code_prolog:
2649 jit_regset_set_ui(mask, 0);
2651 case jit_code_epilog:
2652 jit_regset_set_ui(mask, 0);
2654 case jit_code_callr:
2655 value = jit_regno(node->u.w);
2656 if (!(node->u.w & jit_regno_patch)) {
2657 if (jit_regset_tstbit(mask, value)) {
2658 jit_regset_clrbit(mask, value);
2659 jit_regset_setbit(live, value);
2662 case jit_code_calli:
2663 for (value = 0; value < _jitc->reglen; ++value) {
2664 value = jit_regset_scan1(mask, value);
2665 if (value >= _jitc->reglen)
2667 spec = jit_class(_rvs[value].spec);
2668 if (!(spec & jit_class_sav))
2669 jit_regset_clrbit(mask, value);
2670 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2671 jit_regset_setbit(live, value);
2675 value = jit_classify(node->code);
2676 if (value & jit_cc_a2_reg) {
2677 if (value & jit_cc_a2_rlh) {
2678 if (!(node->w.q.l & jit_regno_patch)) {
2679 /* Assume register is not changed */
2680 if (jit_regset_tstbit(mask, node->w.q.l))
2681 jit_regset_clrbit(mask, node->w.q.l);
2683 if (!(node->w.q.h & jit_regno_patch)) {
2684 if (jit_regset_tstbit(mask, node->w.q.h))
2685 jit_regset_clrbit(mask, node->w.q.h);
2689 if (!(node->w.w & jit_regno_patch)) {
2690 if (jit_regset_tstbit(mask, node->w.w)) {
2691 jit_regset_clrbit(mask, node->w.w);
2692 if (!(value & jit_cc_a2_chg))
2693 jit_regset_setbit(live, node->w.w);
2698 if (value & jit_cc_a1_reg) {
2699 if (!(node->v.w & jit_regno_patch)) {
2700 if (jit_regset_tstbit(mask, node->v.w)) {
2701 jit_regset_clrbit(mask, node->v.w);
2702 if (!(value & jit_cc_a1_chg))
2703 jit_regset_setbit(live, node->v.w);
2707 if (value & jit_cc_a0_reg) {
2708 if (value & jit_cc_a0_rlh) {
2709 if (!(node->u.q.l & jit_regno_patch)) {
2710 if (jit_regset_tstbit(mask, node->u.q.l)) {
2711 jit_regset_clrbit(mask, node->u.q.l);
2712 if (!(value & jit_cc_a0_chg))
2713 jit_regset_setbit(live, node->u.q.l);
2716 if (!(node->u.q.h & jit_regno_patch)) {
2717 if (jit_regset_tstbit(mask, node->u.q.h)) {
2718 jit_regset_clrbit(mask, node->u.q.h);
2719 if (!(value & jit_cc_a0_chg))
2720 jit_regset_setbit(live, node->u.q.h);
2725 if (!(node->u.w & jit_regno_patch)) {
2726 if (jit_regset_tstbit(mask, node->u.w)) {
2727 jit_regset_clrbit(mask, node->u.w);
2728 if (!(value & jit_cc_a0_chg))
2729 jit_regset_setbit(live, node->u.w);
2734 if (value & jit_cc_a0_jmp) {
2735 if (node->flag & jit_flag_node) {
2737 /* Do not consider jmpi and jmpr cannot jump to the
2738 * next instruction. */
2739 block = _jitc->blocks.ptr + label->v.w;
2740 jit_regset_and(®temp, mask, &block->reglive);
2741 if (jit_regset_set_p(®temp)) {
2742 /* Add live state. */
2743 jit_regset_ior(live, live, ®temp);
2744 /* Remove from unknown state bitmask. */
2745 jit_regset_com(®temp, ®temp);
2746 jit_regset_and(mask, mask, ®temp);
2750 /* Jump to unknown location.
2751 * This is a pitfall of the implementation.
2752 * Only jmpi to not a jit code should reach here,
2753 * or a jmpr of a computed address.
2754 * Because the implementation needs jit_class_nospill
2755 * registers, must treat jmpr as a function call. This
2756 * means that only JIT_Vn registers can be trusted on
2759 jit_regset_set_ui(mask, 0);
2760 for (regno = 0; regno < _jitc->reglen; regno++) {
2761 spec = jit_class(_rvs[regno].spec);
2762 if ((spec & (jit_class_gpr|jit_class_fpr)) &&
2763 (spec & jit_class_sav))
2764 jit_regset_setbit(mask, regno);
2766 /* Assume non callee save registers are live due
2767 * to jump to unknown location. */
2768 /* Treat all callee save as live. */
2769 jit_regset_ior(live, live, mask);
2770 /* Treat anything else as dead. */
2780 _thread_jumps(jit_state_t *_jit)
2787 for (prev = node = _jitc->head; node;) {
2789 switch (node->code) {
2791 if (redundant_jump(prev, node)) {
2795 if (shortcut_jump(prev, node))
2799 case jit_code_callr: case jit_code_calli:
2800 /* non optimizable jump like code */
2803 mask = jit_classify(node->code);
2804 if (mask & jit_cc_a0_jmp) {
2805 if (reverse_jump(prev, node) ||
2806 shortcut_jump(prev, node))
2817 _sequential_labels(jit_state_t *_jit)
2825 for (prev = node = _jitc->head; node; node = next) {
2827 if (node->code == jit_code_label) {
2830 del_label(prev, node);
2833 if (prev != node && prev->code == jit_code_label) {
2834 if ((jump = node->link)) {
2835 for (; jump; jump = link) {
2838 jump->link = prev->link;
2843 del_label(prev, node);
2847 if (next && next->code == jit_code_label && !next->flag) {
2848 if ((jump = next->link)) {
2849 for (; jump; jump = link) {
2852 jump->link = node->link;
2857 del_label(node, next);
2867 _split_branches(jit_state_t *_jit)
2874 for (node = _jitc->head; node; node = next) {
2875 if ((next = node->next)) {
2876 if (next->code == jit_code_label ||
2877 next->code == jit_code_prolog ||
2878 next->code == jit_code_epilog)
2880 /* split block on branches */
2881 if (jit_classify(node->code) & jit_cc_a0_jmp) {
2882 label = new_node(jit_code_label);
2885 if (_jitc->blocks.offset >= _jitc->blocks.length) {
2888 length = _jitc->blocks.length + 16;
2889 jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr,
2890 _jitc->blocks.length * sizeof(jit_block_t),
2891 length * sizeof(jit_block_t));
2892 _jitc->blocks.length = length;
2894 block = _jitc->blocks.ptr + _jitc->blocks.offset;
2895 block->label = label;
2896 label->v.w = _jitc->blocks.offset;
2897 jit_regset_new(&block->reglive);
2898 jit_regset_new(&block->regmask);
2899 ++_jitc->blocks.offset;
2906 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2913 if (!(node->flag & jit_flag_node))
2915 assert(node->code != jit_code_jmpr);
2916 cond = node->code != jit_code_jmpi;
2918 for (next = jump->next; next; next = next->next) {
2919 switch (next->code) {
2921 if (!(next->flag & jit_flag_node))
2923 if (jump->link == node)
2924 jump->link = node->link;
2926 for (temp = jump->link;
2929 assert(temp != NULL);
2930 temp->link = node->link;
2934 node->link = jump->link;
2940 node->code = jit_code_jmpr;
2941 node->u.w = next->u.w;
2943 node->flag &= ~jit_flag_node;
2945 case jit_code_note: case jit_code_label:
2955 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2957 jit_node_t *local_prev;
2958 jit_node_t *local_next;
2960 if (!(node->flag & jit_flag_node))
2962 for (local_prev = node, local_next = node->next;
2964 local_prev = local_next, local_next = local_next->next) {
2966 switch (local_next->code) {
2967 case jit_code_label: case jit_code_epilog:
2968 if (node->u.n == local_next) {
2969 if (local_next->link == node)
2970 local_next->link = node->link;
2972 for (local_prev = local_next->link;
2973 local_prev->link != node;
2974 local_prev = local_prev->link)
2975 assert(local_prev != NULL);
2976 local_prev->link = node->link;
2978 del_node(prev, node);
2982 case jit_code_name: case jit_code_note:
2983 case jit_code_align:
2993 reverse_jump_code(jit_code_t code)
2996 case jit_code_bltr: return (jit_code_bger);
2997 case jit_code_blti: return (jit_code_bgei);
2998 case jit_code_bltr_u: return (jit_code_bger_u);
2999 case jit_code_blti_u: return (jit_code_bgei_u);
3000 case jit_code_bler: return (jit_code_bgtr);
3001 case jit_code_blei: return (jit_code_bgti);
3002 case jit_code_bler_u: return (jit_code_bgtr_u);
3003 case jit_code_blei_u: return (jit_code_bgti_u);
3004 case jit_code_beqr: return (jit_code_bner);
3005 case jit_code_beqi: return (jit_code_bnei);
3006 case jit_code_bger: return (jit_code_bltr);
3007 case jit_code_bgei: return (jit_code_blti);
3008 case jit_code_bger_u: return (jit_code_bltr_u);
3009 case jit_code_bgei_u: return (jit_code_blti_u);
3010 case jit_code_bgtr: return (jit_code_bler);
3011 case jit_code_bgti: return (jit_code_blei);
3012 case jit_code_bgtr_u: return (jit_code_bler_u);
3013 case jit_code_bgti_u: return (jit_code_blei_u);
3014 case jit_code_bner: return (jit_code_beqr);
3015 case jit_code_bnei: return (jit_code_beqi);
3016 case jit_code_bmsr: return (jit_code_bmcr);
3017 case jit_code_bmsi: return (jit_code_bmci);
3018 case jit_code_bmcr: return (jit_code_bmsr);
3019 case jit_code_bmci: return (jit_code_bmsi);
3020 case jit_code_bltr_f: return (jit_code_bunger_f);
3021 case jit_code_blti_f: return (jit_code_bungei_f);
3022 case jit_code_bler_f: return (jit_code_bungtr_f);
3023 case jit_code_blei_f: return (jit_code_bungti_f);
3025 case jit_code_beqr_f: return (jit_code_bner_f);
3026 case jit_code_beqi_f: return (jit_code_bnei_f);
3028 case jit_code_bger_f: return (jit_code_bunltr_f);
3029 case jit_code_bgei_f: return (jit_code_bunlti_f);
3030 case jit_code_bgtr_f: return (jit_code_bunler_f);
3031 case jit_code_bgti_f: return (jit_code_bunlei_f);
3033 case jit_code_bner_f: return (jit_code_beqr_f);
3034 case jit_code_bnei_f: return (jit_code_beqr_f);
3036 case jit_code_bunltr_f: return (jit_code_bger_f);
3037 case jit_code_bunlti_f: return (jit_code_bgei_f);
3038 case jit_code_bunler_f: return (jit_code_bgtr_f);
3039 case jit_code_bunlei_f: return (jit_code_bgti_f);
3041 case jit_code_buneqr_f: return (jit_code_bltgtr_f);
3042 case jit_code_buneqi_f: return (jit_code_bltgti_f);
3044 case jit_code_bunger_f: return (jit_code_bltr_f);
3045 case jit_code_bungei_f: return (jit_code_blti_f);
3046 case jit_code_bungtr_f: return (jit_code_bler_f);
3047 case jit_code_bungti_f: return (jit_code_blei_f);
3049 case jit_code_bltgtr_f: return (jit_code_buneqr_f);
3050 case jit_code_bltgti_f: return (jit_code_buneqi_f);
3052 case jit_code_bordr_f: return (jit_code_bunordr_f);
3053 case jit_code_bordi_f: return (jit_code_bunordi_f);
3054 case jit_code_bunordr_f:return (jit_code_bordr_f);
3055 case jit_code_bunordi_f:return (jit_code_bordi_f);
3056 case jit_code_bltr_d: return (jit_code_bunger_d);
3057 case jit_code_blti_d: return (jit_code_bungei_d);
3058 case jit_code_bler_d: return (jit_code_bungtr_d);
3059 case jit_code_blei_d: return (jit_code_bungti_d);
3061 case jit_code_beqr_d: return (jit_code_bner_d);
3062 case jit_code_beqi_d: return (jit_code_bnei_d);
3064 case jit_code_bger_d: return (jit_code_bunltr_d);
3065 case jit_code_bgei_d: return (jit_code_bunlti_d);
3066 case jit_code_bgtr_d: return (jit_code_bunler_d);
3067 case jit_code_bgti_d: return (jit_code_bunlei_d);
3069 case jit_code_bner_d: return (jit_code_beqr_d);
3070 case jit_code_bnei_d: return (jit_code_beqi_d);
3072 case jit_code_bunltr_d: return (jit_code_bger_d);
3073 case jit_code_bunlti_d: return (jit_code_bgei_d);
3074 case jit_code_bunler_d: return (jit_code_bgtr_d);
3075 case jit_code_bunlei_d: return (jit_code_bgti_d);
3077 case jit_code_buneqr_d: return (jit_code_bltgtr_d);
3078 case jit_code_buneqi_d: return (jit_code_bltgti_d);
3080 case jit_code_bunger_d: return (jit_code_bltr_d);
3081 case jit_code_bungei_d: return (jit_code_blti_d);
3082 case jit_code_bungtr_d: return (jit_code_bler_d);
3083 case jit_code_bungti_d: return (jit_code_blei_d);
3085 case jit_code_bltgtr_d: return (jit_code_buneqr_d);
3086 case jit_code_bltgti_d: return (jit_code_buneqi_d);
3088 case jit_code_bordr_d: return (jit_code_bunordr_d);
3089 case jit_code_bordi_d: return (jit_code_bunordi_d);
3090 case jit_code_bunordr_d:return (jit_code_bordr_d);
3091 case jit_code_bunordi_d:return (jit_code_bordi_d);
3092 case jit_code_boaddr: return (jit_code_bxaddr);
3093 case jit_code_boaddi: return (jit_code_bxaddi);
3094 case jit_code_boaddr_u: return (jit_code_bxaddr_u);
3095 case jit_code_boaddi_u: return (jit_code_bxaddi_u);
3096 case jit_code_bxaddr: return (jit_code_boaddr);
3097 case jit_code_bxaddi: return (jit_code_boaddi);
3098 case jit_code_bxaddr_u: return (jit_code_boaddr_u);
3099 case jit_code_bxaddi_u: return (jit_code_boaddi_u);
3100 case jit_code_bosubr: return (jit_code_bxsubr);
3101 case jit_code_bosubi: return (jit_code_bxsubi);
3102 case jit_code_bosubr_u: return (jit_code_bxsubr_u);
3103 case jit_code_bosubi_u: return (jit_code_bxsubi_u);
3104 case jit_code_bxsubr: return (jit_code_bosubr);
3105 case jit_code_bxsubi: return (jit_code_bosubi);
3106 case jit_code_bxsubr_u: return (jit_code_bosubr_u);
3107 case jit_code_bxsubi_u: return (jit_code_bosubi_u);
3108 default: abort(); /* invalid jump code */
3113 * change common pattern:
3114 * <cond_jump L0> <jump L1> <label L0>
3116 * <reverse_cond_jump L1>
3119 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3121 jit_node_t *local_prev;
3122 jit_node_t *local_next;
3123 jit_node_t *local_jump;
3125 if (!(node->flag & jit_flag_node))
3127 /* =><cond_jump L0> <jump L1> <label L0> */
3128 local_next = node->next;
3129 if (local_next->code != jit_code_jmpi ||
3130 !(local_next->flag & jit_flag_node))
3132 /* <cond_jump L0> =><jump L1> <label L0> */
3134 local_jump = local_next->u.n;
3135 for (local_prev = local_next, local_next = local_next->next;
3137 local_prev = local_next, local_next = local_next->next) {
3138 switch (local_next->code) {
3139 case jit_code_label: case jit_code_epilog:
3140 if (node->u.n == local_next) {
3141 if (local_next->link == node)
3142 local_next->link = node->link;
3144 for (local_prev = local_next->link;
3145 local_prev->link != node;
3146 local_prev = local_prev->link)
3147 assert(local_prev != NULL);
3148 local_prev->link = node->link;
3150 del_node(node, node->next);
3151 node->code = reverse_jump_code(node->code);
3152 node->u.n = local_jump;
3153 node->link = local_jump->link;
3154 local_jump->link = node;
3168 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump)
3179 if (prev->code == jit_code_epilog)
3181 assert(prev->code == jit_code_label);
3182 if ((prev->flag & jit_flag_head) || node->link || prev->link != node)
3183 /* multiple sources */
3185 /* if there are sequential labels it will return below */
3191 regno = jit_regno(node->v.w);
3192 for (iter = prev->next; iter; prev = iter, iter = iter->next) {
3193 switch (iter->code) {
3194 case jit_code_label: case jit_code_prolog:
3195 case jit_code_epilog:
3198 if (regno == jit_regno(iter->u.w)) {
3199 if (iter->flag || iter->v.w != word)
3202 del_node(prev, iter);
3207 spec = jit_classify(iter->code);
3208 if (spec & jit_cc_a0_jmp)
3210 if ((spec & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
3211 (jit_cc_a0_reg|jit_cc_a0_chg)) {
3212 if (spec & jit_cc_a0_rlh) {
3213 if (regno == jit_regno(iter->u.q.l) ||
3214 regno == jit_regno(iter->u.q.h))
3218 if (regno == jit_regno(iter->u.w))
3222 if ((spec & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
3223 (jit_cc_a1_reg|jit_cc_a1_chg)) {
3224 if (regno == jit_regno(iter->v.w))
3227 if ((spec & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
3228 (jit_cc_a2_reg|jit_cc_a2_chg)) {
3229 if (regno == jit_regno(iter->w.w))
3240 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
3241 jit_int32_t kind, jit_int32_t size)
3247 regno = jit_regno(node->u.w);
3248 right = jit_regno(node->v.w);
3249 value = _jitc->values + regno;
3250 if ((value->kind == jit_kind_register &&
3251 jit_regno(value->base.q.l) == right &&
3252 value->base.q.h == _jitc->gen[right]) ||
3253 (value->kind == kind && _jitc->values[right].kind == kind &&
3254 memcmp(&value->base.w, &_jitc->values[right].base.w, size) == 0)) {
3255 del_node(prev, node);
3258 if (_jitc->values[right].kind == jit_kind_word)
3259 jit_memcpy(value, _jitc->values + right, sizeof(jit_value_t));
3261 value->kind = jit_kind_register;
3262 value->base.q.l = right;
3263 value->base.q.h = _jitc->gen[right];
3265 ++_jitc->gen[regno];
3271 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
3272 jit_int32_t kind, jit_int32_t size)
3279 regno = jit_regno(node->u.w);
3280 value = _jitc->values + regno;
3281 if (node->flag & jit_flag_node) {
3282 /* set to undefined if value will be patched */
3284 ++_jitc->gen[regno];
3287 if (value->kind == kind) {
3288 if (memcmp(&node->v.w, &value->base.w, size) == 0) {
3289 del_node(prev, node);
3292 spec = jit_class(_rvs[regno].spec);
3293 if (kind == jit_kind_word)
3294 spec &= jit_class_gpr;
3296 spec &= (jit_class_xpr | jit_class_fpr);
3297 for (offset = 0; offset < _jitc->reglen; offset++) {
3298 if (_jitc->values[offset].kind == kind &&
3299 memcmp(&node->v.w, &_jitc->values[offset].base.w, size) == 0 &&
3300 (jit_class(_rvs[offset].spec) & spec) == spec) {
3301 if (kind == jit_kind_word)
3302 node->code = jit_code_movr;
3303 else if (kind == jit_kind_float32)
3304 node->code = jit_code_movr_f;
3306 node->code = jit_code_movr_d;
3308 jit_memcpy(value, _jitc->values + offset, sizeof(jit_value_t));
3309 ++_jitc->gen[regno];
3315 jit_memcpy(&value->base.w, &node->v.w, size);
3316 ++_jitc->gen[regno];
3321 /* simple/safe redundandy test not checking if another register
3322 * holds the same value
3325 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3331 regno = jit_regno(node->u.w);
3332 right = jit_regno(node->v.w);
3333 value = _jitc->values + regno;
3334 if (regno != right &&
3335 value->kind == jit_kind_code && value->code == node->code &&
3336 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3337 node->w.w == value->disp.w) {
3338 del_node(prev, node);
3341 value->kind = jit_kind_code;
3342 value->code = node->code;
3343 value->base.q.l = right;
3344 value->base.q.h = _jitc->gen[right];
3345 value->disp.w = node->w.w;
3346 ++_jitc->gen[regno];
3352 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3359 regno = jit_regno(node->w.w);
3360 right = jit_regno(node->v.w);
3361 value = _jitc->values + regno;
3363 /* check for redundant store after load */
3364 if (regno != right &&
3365 value->kind == jit_kind_code && value->code == node->code &&
3366 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3367 node->u.w == value->disp.w) {
3368 del_node(prev, node);
3372 /* assume anything can alias, and invalidate tracked values */
3373 for (offset = 0; offset < _jitc->reglen; offset++) {
3374 if (_jitc->values[offset].kind == jit_kind_code) {
3375 _jitc->values[offset].kind = 0;
3376 ++_jitc->gen[offset];
3380 /* no multiple information, so, if set to a constant,
3381 * prefer to keep that information */
3382 if (value->kind == 0) {
3383 value->kind = jit_kind_code;
3384 switch (node->code) {
3385 /* no information about signed/unsigned either */
3386 case jit_code_stxi_c: value->code = jit_code_ldxi_c; break;
3387 case jit_code_stxi_s: value->code = jit_code_ldxi_s; break;
3388 case jit_code_stxi_i: value->code = jit_code_ldxi_i; break;
3389 case jit_code_stxi_l: value->code = jit_code_ldxi_l; break;
3390 case jit_code_stxi_f: value->code = jit_code_ldxi_f; break;
3391 case jit_code_stxi_d: value->code = jit_code_ldxi_d; break;
3394 value->kind = jit_kind_code;
3395 value->base.q.l = right;
3396 value->base.q.h = _jitc->gen[right];
3397 value->disp.w = node->u.w;
3403 /* usually there should be only one store in the
3404 * jit_get_reg/jit_unget_reg, but properly handle
3405 * multiple ones by moving the save node */
3407 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3412 if ((temp = _jitc->spill[regno]) && (save = temp->next) != node) {
3413 temp->next = save->next;
3414 save->next = node->next;
3416 _jitc->spill[regno] = node;
3420 /* checks for simple cases where a register is set more than
3421 * once to the same value, and is a common pattern of calls
3422 * to jit_pushargi and jit_pushargr
3425 _simplify(jit_state_t *_jit)
3435 for (prev = NULL, node = _jitc->head; node; prev = node, node = next) {
3437 switch (node->code) {
3438 case jit_code_label: case jit_code_prolog:
3439 case jit_code_callr: case jit_code_calli:
3441 memset(_jitc->gen, 0, sizeof(jit_int32_t) * _jitc->reglen);
3442 memset(_jitc->values, 0, sizeof(jit_value_t) * _jitc->reglen);
3445 _jitc->spill[jit_regno(node->u.w)] = prev;
3448 regno = jit_regno(node->u.w);
3449 if (register_change_p(node->link->next, node, regno) !=
3451 /* spill not required due to optimizing common
3452 * redundancy case of calling jit_get_reg/jit_unget_reg
3453 * and then setting the register to the value it is
3454 * already holding */
3455 patch_register(node->link->next, node,
3456 jit_regno_patch|regno, regno);
3458 del_node(_jitc->spill[regno], node->link);
3459 del_node(prev, node);
3462 _jitc->spill[regno] = NULL;
3465 regno = jit_regno(node->u.w);
3466 if (simplify_movr(prev, node,
3467 jit_kind_word, sizeof(jit_word_t))) {
3469 simplify_spill(node = prev, regno);
3473 regno = jit_regno(node->u.w);
3474 if (simplify_movi(prev, node,
3475 jit_kind_word, sizeof(jit_word_t))) {
3477 simplify_spill(node = prev, regno);
3480 case jit_code_movr_f:
3481 regno = jit_regno(node->u.w);
3482 if (simplify_movr(prev, node,
3483 jit_kind_float32, sizeof(jit_float32_t))) {
3485 simplify_spill(node = prev, regno);
3488 case jit_code_movi_f:
3489 regno = jit_regno(node->u.w);
3490 if (simplify_movi(prev, node,
3491 jit_kind_float32, sizeof(jit_float32_t))) {
3493 simplify_spill(node = prev, regno);
3496 case jit_code_movr_d:
3497 regno = jit_regno(node->u.w);
3498 if (simplify_movr(prev, node,
3499 jit_kind_float64, sizeof(jit_float64_t))) {
3501 simplify_spill(node = prev, regno);
3504 case jit_code_movi_d:
3505 regno = jit_regno(node->u.w);
3506 if (simplify_movi(prev, node,
3507 jit_kind_float64, sizeof(jit_float64_t))) {
3509 simplify_spill(node = prev, regno);
3512 case jit_code_ldxi_c: case jit_code_ldxi_uc:
3513 case jit_code_ldxi_s: case jit_code_ldxi_us:
3514 case jit_code_ldxi_i: case jit_code_ldxi_ui:
3515 case jit_code_ldxi_l:
3516 case jit_code_ldxi_f: case jit_code_ldxi_d:
3517 regno = jit_regno(node->u.w);
3518 if (simplify_ldxi(prev, node)) {
3520 simplify_spill(node = prev, regno);
3523 case jit_code_stxi_c: case jit_code_stxi_s:
3524 case jit_code_stxi_i: case jit_code_stxi_l:
3525 case jit_code_stxi_f: case jit_code_stxi_d:
3526 regno = jit_regno(node->u.w);
3527 if (simplify_stxi(prev, node)) {
3529 simplify_spill(node = prev, regno);
3533 info = jit_classify(node->code);
3534 if (info & jit_cc_a0_jmp)
3535 /* labels are not implicitly added when not taking
3536 * a conditional branch */
3538 if (info & jit_cc_a0_chg) {
3539 if (info & jit_cc_a0_rlh) {
3540 regno = jit_regno(node->u.q.l);
3541 _jitc->values[regno].kind = 0;
3542 ++_jitc->gen[regno];
3543 regno = jit_regno(node->u.q.h);
3544 _jitc->values[regno].kind = 0;
3545 ++_jitc->gen[regno];
3548 regno = jit_regno(node->u.w);
3549 _jitc->values[regno].kind = 0;
3550 ++_jitc->gen[regno];
3553 if (info & jit_cc_a1_chg) {
3554 regno = jit_regno(node->v.w);
3555 _jitc->values[regno].kind = 0;
3556 ++_jitc->gen[regno];
3558 if (info & jit_cc_a2_chg) {
3560 /* Assume registers are not changed */
3561 if (info & jit_cc_a2_rlh) {
3562 regno = jit_regno(node->w.q.l);
3563 _jitc->values[regno].kind = 0;
3564 ++_jitc->gen[regno];
3565 regno = jit_regno(node->w.q.h);
3566 _jitc->values[regno].kind = 0;
3567 ++_jitc->gen[regno];
3571 regno = jit_regno(node->w.w);
3572 _jitc->values[regno].kind = 0;
3573 ++_jitc->gen[regno];
3585 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3590 for (; node != link; node = node->next) {
3591 switch (node->code) {
3592 case jit_code_label: case jit_code_prolog:
3593 /* lack of extra information so cannot say it is undefined */
3594 return (jit_reg_change);
3595 case jit_code_callr: case jit_code_calli:
3596 if (!(jit_class(_rvs[regno].spec) & jit_class_sav))
3597 return (jit_reg_undef);
3600 value = jit_classify(node->code);
3601 /* lack of extra information */
3602 if (value & (jit_cc_a0_jmp|jit_cc_a0_cnd))
3603 return (jit_reg_change);
3604 else if ((value & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
3605 (jit_cc_a0_reg|jit_cc_a0_chg) &&
3606 (((value & jit_cc_a0_rlh) &&
3607 (node->u.q.l == regno || node->u.q.h == regno)) ||
3608 (!(value & jit_cc_a0_rlh) &&
3609 node->u.w == regno)))
3610 return (jit_reg_change);
3611 else if ((value & jit_cc_a1_reg) && node->v.w == regno &&
3612 (value & jit_cc_a1_chg))
3613 return (jit_reg_change);
3614 else if ((value & jit_cc_a2_reg) && node->w.w == regno &&
3615 (value & jit_cc_a2_chg))
3616 return (jit_reg_change);
3620 return (jit_reg_static);
3623 /* most of this could be done at the same time as generating jit, but
3624 * avoid complications on different cpu backends and patch spill/loads
3625 * here, by simulating jit generation */
3627 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3629 if (!jit_regset_tstbit(&_jitc->reglive, regno)) {
3630 jit_regset_setbit(&_jitc->regmask, regno);
3631 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
3632 if (!jit_regset_tstbit(&_jitc->reglive, regno) &&
3633 register_change_p(node->next, node->link, regno) != jit_reg_change)
3641 _patch_registers(jit_state_t *_jit)
3651 _jitc->function = NULL;
3653 jit_reglive_setup();
3654 for (prev = NULL, node = _jitc->head; node; node = next) {
3657 info = jit_classify(node->code);
3658 jit_regarg_set(node, info);
3660 switch (node->code) {
3662 regno = jit_regno(node->u.w);
3663 if (!spill_reglive_p(node, regno)) {
3664 /* register is not live, just remove spill/reload */
3665 jit_regarg_clr(node, info);
3666 node->link->v.w = jit_regload_delete;
3667 del_node(prev, node);
3671 /* try to find a free register of the same class */
3672 spec = jit_class(_rvs[regno].spec) & ~jit_class_arg;
3673 for (value = 0; value < _jitc->reglen; value++) {
3674 if (value != regno &&
3675 ((jit_class(_rvs[value].spec) & spec) &
3676 ~jit_class_arg) == spec &&
3677 !jit_regset_tstbit(&_jitc->regarg, value) &&
3678 !spill_reglive_p(node, value))
3681 if (value < _jitc->reglen) {
3682 jit_regarg_clr(node, info);
3683 patch_register(node->next, node->link,
3684 jit_regno_patch|node->u.w,
3685 jit_regno_patch|value);
3686 /* mark as live just in case there are nested
3687 * register patches, so that next patch will
3688 * not want to use the same register */
3689 jit_regset_setbit(&_jitc->reglive, value);
3690 /* register is not live, just remove spill/reload */
3691 node->link->v.w = jit_regload_isdead;
3692 del_node(prev, node);
3696 /* failed to find a free register */
3697 if (spec & jit_class_gpr) {
3698 if (!_jitc->function->regoff[regno])
3699 _jitc->function->regoff[regno] =
3700 jit_allocai(sizeof(jit_word_t));
3701 #if __WORDSIZE == 32
3702 node->code = jit_code_stxi_i;
3704 node->code = jit_code_stxi_l;
3708 node->code = jit_code_stxi_d;
3709 if (!_jitc->function->regoff[regno])
3710 _jitc->function->regoff[regno] =
3711 jit_allocai(sizeof(jit_float64_t));
3713 node->u.w = _jitc->function->regoff[regno];
3721 regno = jit_regno(node->u.w);
3723 if (node->v.w == jit_regload_isdead)
3724 jit_regset_clrbit(&_jitc->reglive, regno);
3725 del_node(prev, node);
3728 spec = jit_class(_rvs[regno].spec);
3729 if (spec & jit_class_gpr) {
3730 #if __WORDSIZE == 32
3731 node->code = jit_code_ldxi_i;
3733 node->code = jit_code_ldxi_l;
3737 node->code = jit_code_ldxi_d;
3740 node->w.w = _jitc->function->regoff[regno];
3743 case jit_code_prolog:
3744 _jitc->function = _jitc->functions.ptr + node->w.w;
3746 case jit_code_epilog:
3747 _jitc->function = NULL;
3753 jit_regarg_clr(node, info);
3754 /* update register live state */
3761 _patch_register(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3762 jit_int32_t regno, jit_int32_t patch)
3766 for (; node != link; node = node->next) {
3767 value = jit_classify(node->code);
3768 if (value & jit_cc_a0_reg) {
3769 if (value & jit_cc_a0_rlh) {
3770 if (node->u.q.l == regno)
3771 node->u.q.l = patch;
3772 if (node->u.q.h == regno)
3773 node->u.q.h = patch;
3776 if (node->u.w == regno)
3780 if ((value & jit_cc_a1_reg) && node->v.w == regno)
3782 if (value & jit_cc_a2_reg) {
3783 if (value & jit_cc_a2_rlh) {
3784 if (node->w.q.l == regno)
3785 node->w.q.l = patch;
3786 if (node->w.q.h == regno)
3787 node->w.q.h = patch;
3790 if (node->w.w == regno)
3797 #if __BYTE_ORDER == __LITTLE_ENDIAN
3798 # define htonr_us(r0,r1) bswapr_us(r0,r1)
3799 # define htonr_ui(r0,r1) bswapr_ui(r0,r1)
3800 # if __WORDSIZE == 64
3801 # define htonr_ul(r0,r1) bswapr_ul(r0,r1)
3804 # define htonr_us(r0,r1) extr_us(r0,r1)
3805 # if __WORDSIZE == 32
3806 # define htonr_ui(r0,r1) movr(r0,r1)
3808 # define htonr_ui(r0,r1) extr_ui(r0,r1)
3809 # define htonr_ul(r0,r1) movr(r0,r1)
3813 static maybe_unused void
3814 generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3815 static maybe_unused void
3816 generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3817 #if __WORDSIZE == 64
3818 static maybe_unused void
3819 generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3822 #if defined(__i386__) || defined(__x86_64__)
3823 # include "jit_x86.c"
3824 #elif defined(__mips__)
3825 # include "jit_mips.c"
3826 #elif defined(__arm__)
3827 # include "jit_arm.c"
3828 #elif defined(__powerpc__)
3829 # include "jit_ppc.c"
3830 #elif defined(__sparc__)
3831 # include "jit_sparc.c"
3832 #elif defined(__ia64__)
3833 # include "jit_ia64.c"
3834 #elif defined(__hppa__)
3835 # include "jit_hppa.c"
3836 #elif defined(__aarch64__)
3837 # include "jit_aarch64.c"
3838 #elif defined(__s390__) || defined(__s390x__)
3839 # include "jit_s390.c"
3840 #elif defined(__alpha__)
3841 # include "jit_alpha.c"
3842 #elif defined(__riscv)
3843 # include "jit_riscv.c"
3846 static maybe_unused void
3847 generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3849 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3851 rshi(rn(reg), r1, 8);
3853 andi(rn(reg), rn(reg), 0xff);
3855 orr(r0, r0, rn(reg));
3860 static maybe_unused void
3861 generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3863 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3865 rshi(rn(reg), r1, 16);
3867 bswapr_us(rn(reg), rn(reg));
3869 orr(r0, r0, rn(reg));
3874 #if __WORDSIZE == 64
3875 static maybe_unused void
3876 generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3878 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3880 rshi_u(rn(reg), r1, 32);
3882 bswapr_ui(rn(reg), rn(reg));
3884 orr(r0, r0, rn(reg));