2 * Tiny Code Generator for QEMU
4 * Copyright (c) 2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 /* define it to suppress various consistency checks (faster) */
28 /* define it to use liveness analysis (better code) */
29 #define USE_LIVENESS_ANALYSIS
44 /* Note: the long term plan is to reduce the dependancies on the QEMU
45 CPU definitions. Currently they are used for qemu_ld/st
47 #define NO_CPU_IO_DEFS
55 static void patch_reloc(uint8_t *code_ptr, int type,
56 tcg_target_long value);
58 TCGOpDef tcg_op_defs[] = {
59 #define DEF(s, n, copy_size) { #s, 0, 0, n, n, 0, copy_size },
60 #define DEF2(s, iargs, oargs, cargs, flags) { #s, iargs, oargs, cargs, iargs + oargs + cargs, flags, 0 },
66 TCGRegSet tcg_target_available_regs[2];
67 TCGRegSet tcg_target_call_clobber_regs;
69 /* XXX: move that inside the context */
70 uint16_t *gen_opc_ptr;
71 TCGArg *gen_opparam_ptr;
73 static inline void tcg_out8(TCGContext *s, uint8_t v)
78 static inline void tcg_out16(TCGContext *s, uint16_t v)
80 *(uint16_t *)s->code_ptr = v;
84 static inline void tcg_out32(TCGContext *s, uint32_t v)
86 *(uint32_t *)s->code_ptr = v;
90 /* label relocation processing */
92 void tcg_out_reloc(TCGContext *s, uint8_t *code_ptr, int type,
93 int label_index, long addend)
98 l = &s->labels[label_index];
100 /* FIXME: This may break relocations on RISC targets that
101 modify instruction fields in place. The caller may not have
102 written the initial value. */
103 patch_reloc(code_ptr, type, l->u.value + addend);
105 /* add a new relocation entry */
106 r = tcg_malloc(sizeof(TCGRelocation));
110 r->next = l->u.first_reloc;
111 l->u.first_reloc = r;
115 static void tcg_out_label(TCGContext *s, int label_index,
116 tcg_target_long value)
121 l = &s->labels[label_index];
124 r = l->u.first_reloc;
126 patch_reloc(r->ptr, r->type, value + r->addend);
133 int gen_new_label(void)
135 TCGContext *s = &tcg_ctx;
139 if (s->nb_labels >= TCG_MAX_LABELS)
141 idx = s->nb_labels++;
144 l->u.first_reloc = NULL;
148 #include "tcg-target.c"
151 static void pstrcpy(char *buf, int buf_size, const char *str)
161 if (c == 0 || q >= buf + buf_size - 1)
168 #if TCG_TARGET_REG_BITS == 32
169 /* strcat and truncate. */
170 static char *pstrcat(char *buf, int buf_size, const char *s)
175 pstrcpy(buf + len, buf_size - len, s);
180 /* pool based memory allocation */
181 void *tcg_malloc_internal(TCGContext *s, int size)
186 if (size > TCG_POOL_CHUNK_SIZE) {
187 /* big malloc: insert a new pool (XXX: could optimize) */
188 p = qemu_malloc(sizeof(TCGPool) + size);
191 s->pool_current->next = p;
194 p->next = s->pool_current;
204 pool_size = TCG_POOL_CHUNK_SIZE;
205 p = qemu_malloc(sizeof(TCGPool) + pool_size);
209 s->pool_current->next = p;
218 s->pool_cur = p->data + size;
219 s->pool_end = p->data + p->size;
223 void tcg_pool_reset(TCGContext *s)
225 s->pool_cur = s->pool_end = NULL;
226 s->pool_current = NULL;
229 /* free all the pool */
230 void tcg_pool_free(TCGContext *s)
234 for(p = s->pool_first; p != NULL; p = p1) {
238 s->pool_first = NULL;
239 s->pool_cur = s->pool_end = NULL;
242 void tcg_context_init(TCGContext *s)
244 int op, total_args, n;
246 TCGArgConstraint *args_ct;
249 memset(s, 0, sizeof(*s));
250 s->temps = s->static_temps;
253 /* Count total number of arguments and allocate the corresponding
256 for(op = 0; op < NB_OPS; op++) {
257 def = &tcg_op_defs[op];
258 n = def->nb_iargs + def->nb_oargs;
262 args_ct = qemu_malloc(sizeof(TCGArgConstraint) * total_args);
263 sorted_args = qemu_malloc(sizeof(int) * total_args);
265 for(op = 0; op < NB_OPS; op++) {
266 def = &tcg_op_defs[op];
267 def->args_ct = args_ct;
268 def->sorted_args = sorted_args;
269 n = def->nb_iargs + def->nb_oargs;
277 void tcg_set_frame(TCGContext *s, int reg,
278 tcg_target_long start, tcg_target_long size)
280 s->frame_start = start;
281 s->frame_end = start + size;
285 void tcg_set_macro_func(TCGContext *s, TCGMacroFunc *func)
287 s->macro_func = func;
290 void tcg_func_start(TCGContext *s)
293 s->nb_temps = s->nb_globals;
294 s->labels = tcg_malloc(sizeof(TCGLabel) * TCG_MAX_LABELS);
296 s->current_frame_offset = s->frame_start;
298 gen_opc_ptr = gen_opc_buf;
299 gen_opparam_ptr = gen_opparam_buf;
302 static inline void tcg_temp_alloc(TCGContext *s, int n)
304 if (n > TCG_MAX_TEMPS)
308 TCGv tcg_global_reg_new(TCGType type, int reg, const char *name)
310 TCGContext *s = &tcg_ctx;
314 #if TCG_TARGET_REG_BITS == 32
315 if (type != TCG_TYPE_I32)
318 if (tcg_regset_test_reg(s->reserved_regs, reg))
321 tcg_temp_alloc(s, s->nb_globals + 1);
322 ts = &s->temps[s->nb_globals];
323 ts->base_type = type;
327 ts->val_type = TEMP_VAL_REG;
330 tcg_regset_set_reg(s->reserved_regs, reg);
331 return MAKE_TCGV(idx);
334 TCGv tcg_global_mem_new(TCGType type, int reg, tcg_target_long offset,
337 TCGContext *s = &tcg_ctx;
342 #if TCG_TARGET_REG_BITS == 32
343 if (type == TCG_TYPE_I64) {
345 tcg_temp_alloc(s, s->nb_globals + 1);
346 ts = &s->temps[s->nb_globals];
347 ts->base_type = type;
348 ts->type = TCG_TYPE_I32;
350 ts->mem_allocated = 1;
352 #ifdef TCG_TARGET_WORDS_BIGENDIAN
353 ts->mem_offset = offset + 4;
355 ts->mem_offset = offset;
357 ts->val_type = TEMP_VAL_MEM;
358 pstrcpy(buf, sizeof(buf), name);
359 pstrcat(buf, sizeof(buf), "_0");
360 ts->name = strdup(buf);
363 ts->base_type = type;
364 ts->type = TCG_TYPE_I32;
366 ts->mem_allocated = 1;
368 #ifdef TCG_TARGET_WORDS_BIGENDIAN
369 ts->mem_offset = offset;
371 ts->mem_offset = offset + 4;
373 ts->val_type = TEMP_VAL_MEM;
374 pstrcpy(buf, sizeof(buf), name);
375 pstrcat(buf, sizeof(buf), "_1");
376 ts->name = strdup(buf);
382 tcg_temp_alloc(s, s->nb_globals + 1);
383 ts = &s->temps[s->nb_globals];
384 ts->base_type = type;
387 ts->mem_allocated = 1;
389 ts->mem_offset = offset;
390 ts->val_type = TEMP_VAL_MEM;
394 return MAKE_TCGV(idx);
397 TCGv tcg_temp_new(TCGType type)
399 TCGContext *s = &tcg_ctx;
404 #if TCG_TARGET_REG_BITS == 32
405 if (type == TCG_TYPE_I64) {
406 tcg_temp_alloc(s, s->nb_temps + 1);
407 ts = &s->temps[s->nb_temps];
408 ts->base_type = type;
409 ts->type = TCG_TYPE_I32;
411 ts->val_type = TEMP_VAL_DEAD;
412 ts->mem_allocated = 0;
415 ts->base_type = TCG_TYPE_I32;
416 ts->type = TCG_TYPE_I32;
417 ts->val_type = TEMP_VAL_DEAD;
419 ts->mem_allocated = 0;
425 tcg_temp_alloc(s, s->nb_temps + 1);
426 ts = &s->temps[s->nb_temps];
427 ts->base_type = type;
430 ts->val_type = TEMP_VAL_DEAD;
431 ts->mem_allocated = 0;
435 return MAKE_TCGV(idx);
438 TCGv tcg_const_i32(int32_t val)
440 TCGContext *s = &tcg_ctx;
445 tcg_temp_alloc(s, idx + 1);
447 ts->base_type = ts->type = TCG_TYPE_I32;
448 ts->val_type = TEMP_VAL_CONST;
452 return MAKE_TCGV(idx);
455 TCGv tcg_const_i64(int64_t val)
457 TCGContext *s = &tcg_ctx;
462 #if TCG_TARGET_REG_BITS == 32
463 tcg_temp_alloc(s, idx + 2);
465 ts->base_type = TCG_TYPE_I64;
466 ts->type = TCG_TYPE_I32;
467 ts->val_type = TEMP_VAL_CONST;
471 ts->base_type = TCG_TYPE_I32;
472 ts->type = TCG_TYPE_I32;
473 ts->val_type = TEMP_VAL_CONST;
478 tcg_temp_alloc(s, idx + 1);
480 ts->base_type = ts->type = TCG_TYPE_I64;
481 ts->val_type = TEMP_VAL_CONST;
486 return MAKE_TCGV(idx);
489 void tcg_register_helper(void *func, const char *name)
491 TCGContext *s = &tcg_ctx;
493 if ((s->nb_helpers + 1) > s->allocated_helpers) {
494 n = s->allocated_helpers;
500 s->helpers = realloc(s->helpers, n * sizeof(TCGHelperInfo));
501 s->allocated_helpers = n;
503 s->helpers[s->nb_helpers].func = func;
504 s->helpers[s->nb_helpers].name = name;
508 const char *tcg_helper_get_name(TCGContext *s, void *func)
512 for(i = 0; i < s->nb_helpers; i++) {
513 if (s->helpers[i].func == func)
514 return s->helpers[i].name;
519 static inline TCGType tcg_get_base_type(TCGContext *s, TCGv arg)
521 return s->temps[GET_TCGV(arg)].base_type;
524 static void tcg_gen_call_internal(TCGContext *s, TCGv func,
526 unsigned int nb_rets, const TCGv *rets,
527 unsigned int nb_params, const TCGv *params)
530 *gen_opc_ptr++ = INDEX_op_call;
531 *gen_opparam_ptr++ = (nb_rets << 16) | (nb_params + 1);
532 for(i = 0; i < nb_rets; i++) {
533 *gen_opparam_ptr++ = GET_TCGV(rets[i]);
535 for(i = 0; i < nb_params; i++) {
536 *gen_opparam_ptr++ = GET_TCGV(params[i]);
538 *gen_opparam_ptr++ = GET_TCGV(func);
540 *gen_opparam_ptr++ = flags;
541 /* total parameters, needed to go backward in the instruction stream */
542 *gen_opparam_ptr++ = 1 + nb_rets + nb_params + 3;
546 #if TCG_TARGET_REG_BITS < 64
547 /* Note: we convert the 64 bit args to 32 bit */
548 void tcg_gen_call(TCGContext *s, TCGv func, unsigned int flags,
549 unsigned int nb_rets, const TCGv *rets,
550 unsigned int nb_params, const TCGv *args1)
552 TCGv ret, *args2, rets_2[2], arg;
557 if (tcg_get_base_type(s, ret) == TCG_TYPE_I64) {
560 rets_2[1] = TCGV_HIGH(ret);
564 args2 = alloca((nb_params * 2) * sizeof(TCGv));
566 call_type = (flags & TCG_CALL_TYPE_MASK);
567 for(i = 0; i < nb_params; i++) {
569 if (tcg_get_base_type(s, arg) == TCG_TYPE_I64) {
570 #ifdef TCG_TARGET_I386
571 /* REGPARM case: if the third parameter is 64 bit, it is
572 allocated on the stack */
573 if (j == 2 && call_type == TCG_CALL_TYPE_REGPARM) {
574 call_type = TCG_CALL_TYPE_REGPARM_2;
575 flags = (flags & ~TCG_CALL_TYPE_MASK) | call_type;
578 args2[j++] = TCGV_HIGH(arg);
580 #ifdef TCG_TARGET_WORDS_BIGENDIAN
581 args2[j++] = TCGV_HIGH(arg);
585 args2[j++] = TCGV_HIGH(arg);
592 tcg_gen_call_internal(s, func, flags,
593 nb_rets, rets, j, args2);
596 void tcg_gen_call(TCGContext *s, TCGv func, unsigned int flags,
597 unsigned int nb_rets, const TCGv *rets,
598 unsigned int nb_params, const TCGv *args1)
600 tcg_gen_call_internal(s, func, flags,
601 nb_rets, rets, nb_params, args1);
605 #if TCG_TARGET_REG_BITS == 32
606 void tcg_gen_shifti_i64(TCGv ret, TCGv arg1,
607 int c, int right, int arith)
615 tcg_gen_sari_i32(ret, TCGV_HIGH(arg1), c);
616 tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), 31);
618 tcg_gen_shri_i32(ret, TCGV_HIGH(arg1), c);
619 tcg_gen_movi_i32(TCGV_HIGH(ret), 0);
622 tcg_gen_shli_i32(TCGV_HIGH(ret), arg1, c);
623 tcg_gen_movi_i32(ret, 0);
628 t0 = tcg_temp_new(TCG_TYPE_I32);
629 t1 = tcg_temp_new(TCG_TYPE_I32);
631 tcg_gen_shli_i32(t0, TCGV_HIGH(arg1), 32 - c);
633 tcg_gen_sari_i32(t1, TCGV_HIGH(arg1), c);
635 tcg_gen_shri_i32(t1, TCGV_HIGH(arg1), c);
636 tcg_gen_shri_i32(ret, arg1, c);
637 tcg_gen_or_i32(ret, ret, t0);
638 tcg_gen_mov_i32(TCGV_HIGH(ret), t1);
640 tcg_gen_shri_i32(t0, arg1, 32 - c);
641 /* Note: ret can be the same as arg1, so we use t1 */
642 tcg_gen_shli_i32(t1, arg1, c);
643 tcg_gen_shli_i32(TCGV_HIGH(ret), TCGV_HIGH(arg1), c);
644 tcg_gen_or_i32(TCGV_HIGH(ret), TCGV_HIGH(ret), t0);
645 tcg_gen_mov_i32(ret, t1);
651 void tcg_reg_alloc_start(TCGContext *s)
655 for(i = 0; i < s->nb_globals; i++) {
658 ts->val_type = TEMP_VAL_REG;
660 ts->val_type = TEMP_VAL_MEM;
663 for(i = 0; i < TCG_TARGET_NB_REGS; i++) {
664 s->reg_to_temp[i] = -1;
668 static char *tcg_get_arg_str_idx(TCGContext *s, char *buf, int buf_size,
674 if (idx < s->nb_globals) {
675 pstrcpy(buf, buf_size, ts->name);
677 if (ts->val_type == TEMP_VAL_CONST) {
678 snprintf(buf, buf_size, "$0x%" TCG_PRIlx , ts->val);
680 snprintf(buf, buf_size, "tmp%d", idx - s->nb_globals);
686 char *tcg_get_arg_str(TCGContext *s, char *buf, int buf_size, TCGv arg)
688 return tcg_get_arg_str_idx(s, buf, buf_size, GET_TCGV(arg));
691 void tcg_dump_ops(TCGContext *s, FILE *outfile)
693 const uint16_t *opc_ptr;
696 int c, i, k, nb_oargs, nb_iargs, nb_cargs;
700 opc_ptr = gen_opc_buf;
701 args = gen_opparam_buf;
702 while (opc_ptr < gen_opc_ptr) {
704 def = &tcg_op_defs[c];
705 fprintf(outfile, " %s ", def->name);
706 if (c == INDEX_op_call) {
708 /* variable number of arguments */
710 nb_oargs = arg >> 16;
711 nb_iargs = arg & 0xffff;
712 nb_cargs = def->nb_cargs;
713 } else if (c == INDEX_op_nopn) {
714 /* variable number of arguments */
719 nb_oargs = def->nb_oargs;
720 nb_iargs = def->nb_iargs;
721 nb_cargs = def->nb_cargs;
725 for(i = 0; i < nb_oargs; i++) {
727 fprintf(outfile, ",");
728 fprintf(outfile, "%s",
729 tcg_get_arg_str_idx(s, buf, sizeof(buf), args[k++]));
731 for(i = 0; i < nb_iargs; i++) {
733 fprintf(outfile, ",");
734 /* XXX: dump helper name for call */
735 fprintf(outfile, "%s",
736 tcg_get_arg_str_idx(s, buf, sizeof(buf), args[k++]));
738 for(i = 0; i < nb_cargs; i++) {
740 fprintf(outfile, ",");
742 fprintf(outfile, "$0x%" TCG_PRIlx, arg);
744 fprintf(outfile, "\n");
745 args += nb_iargs + nb_oargs + nb_cargs;
749 /* we give more priority to constraints with less registers */
750 static int get_constraint_priority(const TCGOpDef *def, int k)
752 const TCGArgConstraint *arg_ct;
755 arg_ct = &def->args_ct[k];
756 if (arg_ct->ct & TCG_CT_ALIAS) {
757 /* an alias is equivalent to a single register */
760 if (!(arg_ct->ct & TCG_CT_REG))
763 for(i = 0; i < TCG_TARGET_NB_REGS; i++) {
764 if (tcg_regset_test_reg(arg_ct->u.regs, i))
768 return TCG_TARGET_NB_REGS - n + 1;
771 /* sort from highest priority to lowest */
772 static void sort_constraints(TCGOpDef *def, int start, int n)
774 int i, j, p1, p2, tmp;
776 for(i = 0; i < n; i++)
777 def->sorted_args[start + i] = start + i;
780 for(i = 0; i < n - 1; i++) {
781 for(j = i + 1; j < n; j++) {
782 p1 = get_constraint_priority(def, def->sorted_args[start + i]);
783 p2 = get_constraint_priority(def, def->sorted_args[start + j]);
785 tmp = def->sorted_args[start + i];
786 def->sorted_args[start + i] = def->sorted_args[start + j];
787 def->sorted_args[start + j] = tmp;
793 void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs)
804 assert(op >= 0 && op < NB_OPS);
805 def = &tcg_op_defs[op];
806 nb_args = def->nb_iargs + def->nb_oargs;
807 for(i = 0; i < nb_args; i++) {
808 ct_str = tdefs->args_ct_str[i];
809 tcg_regset_clear(def->args_ct[i].u.regs);
810 def->args_ct[i].ct = 0;
811 if (ct_str[0] >= '0' && ct_str[0] <= '9') {
813 oarg = ct_str[0] - '0';
814 assert(oarg < def->nb_oargs);
815 assert(def->args_ct[oarg].ct & TCG_CT_REG);
816 /* TCG_CT_ALIAS is for the output arguments. The input
817 argument is tagged with TCG_CT_IALIAS. */
818 def->args_ct[i] = def->args_ct[oarg];
819 def->args_ct[oarg].ct = TCG_CT_ALIAS;
820 def->args_ct[oarg].alias_index = i;
821 def->args_ct[i].ct |= TCG_CT_IALIAS;
822 def->args_ct[i].alias_index = oarg;
829 def->args_ct[i].ct |= TCG_CT_CONST;
833 if (target_parse_constraint(&def->args_ct[i], &ct_str) < 0) {
834 fprintf(stderr, "Invalid constraint '%s' for arg %d of operation '%s'\n",
835 ct_str, i, def->name);
843 /* sort the constraints (XXX: this is just an heuristic) */
844 sort_constraints(def, 0, def->nb_oargs);
845 sort_constraints(def, def->nb_oargs, def->nb_iargs);
851 printf("%s: sorted=", def->name);
852 for(i = 0; i < def->nb_oargs + def->nb_iargs; i++)
853 printf(" %d", def->sorted_args[i]);
862 #ifdef USE_LIVENESS_ANALYSIS
864 /* set a nop for an operation using 'nb_args' */
865 static inline void tcg_set_nop(TCGContext *s, uint16_t *opc_ptr,
866 TCGArg *args, int nb_args)
869 *opc_ptr = INDEX_op_nop;
871 *opc_ptr = INDEX_op_nopn;
873 args[nb_args - 1] = nb_args;
877 /* liveness analysis: end of basic block: globals are live, temps are dead */
878 static inline void tcg_la_bb_end(TCGContext *s, uint8_t *dead_temps)
880 memset(dead_temps, 0, s->nb_globals);
881 memset(dead_temps + s->nb_globals, 1, s->nb_temps - s->nb_globals);
884 /* Liveness analysis : update the opc_dead_iargs array to tell if a
885 given input arguments is dead. Instructions updating dead
886 temporaries are removed. */
887 void tcg_liveness_analysis(TCGContext *s)
889 int i, op_index, op, nb_args, nb_iargs, nb_oargs, arg, nb_ops;
893 unsigned int dead_iargs;
895 gen_opc_ptr++; /* skip end */
897 nb_ops = gen_opc_ptr - gen_opc_buf;
899 /* XXX: make it really dynamic */
900 s->op_dead_iargs = tcg_malloc(OPC_BUF_SIZE * sizeof(uint16_t));
902 dead_temps = tcg_malloc(s->nb_temps);
903 memset(dead_temps, 1, s->nb_temps);
905 args = gen_opparam_ptr;
906 op_index = nb_ops - 1;
907 while (op_index >= 0) {
908 op = gen_opc_buf[op_index];
909 def = &tcg_op_defs[op];
914 nb_iargs = args[0] & 0xffff;
915 nb_oargs = args[0] >> 16;
918 /* output args are dead */
919 for(i = 0; i < nb_oargs; i++) {
924 /* globals are live (they may be used by the call) */
925 memset(dead_temps, 0, s->nb_globals);
927 /* input args are live */
929 for(i = 0; i < nb_iargs; i++) {
930 arg = args[i + nb_oargs];
931 if (dead_temps[arg]) {
932 dead_iargs |= (1 << i);
936 s->op_dead_iargs[op_index] = dead_iargs;
939 case INDEX_op_set_label:
941 /* mark end of basic block */
942 tcg_la_bb_end(s, dead_temps);
948 case INDEX_op_discard:
950 /* mark the temporary as dead */
951 dead_temps[args[0]] = 1;
953 case INDEX_op_macro_2:
955 int dead_args[2], macro_id;
956 int saved_op_index, saved_arg_index;
957 int macro_op_index, macro_arg_index;
958 int macro_end_op_index, macro_end_arg_index;
963 dead_args[0] = dead_temps[args[0]];
964 dead_args[1] = dead_temps[args[1]];
967 /* call the macro function which generate code
968 depending on the live outputs */
969 saved_op_index = op_index;
970 saved_arg_index = args - gen_opparam_buf;
972 /* add a macro start instruction */
973 *gen_opc_ptr++ = INDEX_op_macro_start;
974 *gen_opparam_ptr++ = saved_op_index;
975 *gen_opparam_ptr++ = saved_arg_index;
977 macro_op_index = gen_opc_ptr - gen_opc_buf;
978 macro_arg_index = gen_opparam_ptr - gen_opparam_buf;
980 last_nb_temps = s->nb_temps;
982 s->macro_func(s, macro_id, dead_args);
984 /* realloc temp info (XXX: make it faster) */
985 if (s->nb_temps > last_nb_temps) {
986 uint8_t *new_dead_temps;
988 new_dead_temps = tcg_malloc(s->nb_temps);
989 memcpy(new_dead_temps, dead_temps, last_nb_temps);
990 memset(new_dead_temps + last_nb_temps, 1,
991 s->nb_temps - last_nb_temps);
992 dead_temps = new_dead_temps;
995 macro_end_op_index = gen_opc_ptr - gen_opc_buf;
996 macro_end_arg_index = gen_opparam_ptr - gen_opparam_buf;
998 /* end of macro: add a goto to the next instruction */
999 *gen_opc_ptr++ = INDEX_op_macro_end;
1000 *gen_opparam_ptr++ = op_index + 1;
1001 *gen_opparam_ptr++ = saved_arg_index + nb_args;
1003 /* modify the macro operation to be a macro_goto */
1004 gen_opc_buf[op_index] = INDEX_op_macro_goto;
1005 args[0] = macro_op_index;
1006 args[1] = macro_arg_index;
1007 args[2] = 0; /* dummy third arg to match the
1010 /* set the next instruction to the end of the macro */
1011 op_index = macro_end_op_index;
1012 args = macro_end_arg_index + gen_opparam_buf;
1015 case INDEX_op_macro_start:
1018 args = gen_opparam_buf + args[1];
1020 case INDEX_op_macro_goto:
1021 case INDEX_op_macro_end:
1022 tcg_abort(); /* should never happen in liveness analysis */
1025 /* XXX: optimize by hardcoding common cases (e.g. triadic ops) */
1027 if (op > INDEX_op_end) {
1028 args -= def->nb_args;
1029 nb_iargs = def->nb_iargs;
1030 nb_oargs = def->nb_oargs;
1032 /* Test if the operation can be removed because all
1033 its outputs are dead. We assume that nb_oargs == 0
1034 implies side effects */
1035 if (!(def->flags & TCG_OPF_SIDE_EFFECTS) && nb_oargs != 0) {
1036 for(i = 0; i < nb_oargs; i++) {
1038 if (!dead_temps[arg])
1041 tcg_set_nop(s, gen_opc_buf + op_index, args, def->nb_args);
1042 #ifdef CONFIG_PROFILER
1044 extern int64_t dyngen_tcg_del_op_count;
1045 dyngen_tcg_del_op_count++;
1051 /* output args are dead */
1052 for(i = 0; i < nb_oargs; i++) {
1054 dead_temps[arg] = 1;
1057 /* if end of basic block, update */
1058 if (def->flags & TCG_OPF_BB_END) {
1059 tcg_la_bb_end(s, dead_temps);
1062 /* input args are live */
1064 for(i = 0; i < nb_iargs; i++) {
1065 arg = args[i + nb_oargs];
1066 if (dead_temps[arg]) {
1067 dead_iargs |= (1 << i);
1069 dead_temps[arg] = 0;
1071 s->op_dead_iargs[op_index] = dead_iargs;
1074 /* legacy dyngen operations */
1075 args -= def->nb_args;
1076 /* mark end of basic block */
1077 tcg_la_bb_end(s, dead_temps);
1084 if (args != gen_opparam_buf)
1088 /* dummy liveness analysis */
1089 void tcg_liveness_analysis(TCGContext *s)
1092 nb_ops = gen_opc_ptr - gen_opc_buf;
1094 s->op_dead_iargs = tcg_malloc(nb_ops * sizeof(uint16_t));
1095 memset(s->op_dead_iargs, 0, nb_ops * sizeof(uint16_t));
1100 static void dump_regs(TCGContext *s)
1106 for(i = 0; i < s->nb_temps; i++) {
1108 printf(" %10s: ", tcg_get_arg_str_idx(s, buf, sizeof(buf), i));
1109 switch(ts->val_type) {
1111 printf("%s", tcg_target_reg_names[ts->reg]);
1114 printf("%d(%s)", (int)ts->mem_offset, tcg_target_reg_names[ts->mem_reg]);
1116 case TEMP_VAL_CONST:
1117 printf("$0x%" TCG_PRIlx, ts->val);
1129 for(i = 0; i < TCG_TARGET_NB_REGS; i++) {
1130 if (s->reg_to_temp[i] >= 0) {
1132 tcg_target_reg_names[i],
1133 tcg_get_arg_str_idx(s, buf, sizeof(buf), s->reg_to_temp[i]));
1138 static void check_regs(TCGContext *s)
1144 for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) {
1145 k = s->reg_to_temp[reg];
1148 if (ts->val_type != TEMP_VAL_REG ||
1150 printf("Inconsistency for register %s:\n",
1151 tcg_target_reg_names[reg]);
1152 printf("reg state:\n");
1158 for(k = 0; k < s->nb_temps; k++) {
1160 if (ts->val_type == TEMP_VAL_REG &&
1162 s->reg_to_temp[ts->reg] != k) {
1163 printf("Inconsistency for temp %s:\n",
1164 tcg_get_arg_str_idx(s, buf, sizeof(buf), k));
1165 printf("reg state:\n");
1173 static void temp_allocate_frame(TCGContext *s, int temp)
1176 ts = &s->temps[temp];
1177 s->current_frame_offset = (s->current_frame_offset + sizeof(tcg_target_long) - 1) & ~(sizeof(tcg_target_long) - 1);
1178 if (s->current_frame_offset + sizeof(tcg_target_long) > s->frame_end)
1180 ts->mem_offset = s->current_frame_offset;
1181 ts->mem_reg = s->frame_reg;
1182 ts->mem_allocated = 1;
1183 s->current_frame_offset += sizeof(tcg_target_long);
1186 /* free register 'reg' by spilling the corresponding temporary if necessary */
1187 static void tcg_reg_free(TCGContext *s, int reg)
1192 temp = s->reg_to_temp[reg];
1194 ts = &s->temps[temp];
1195 assert(ts->val_type == TEMP_VAL_REG);
1196 if (!ts->mem_coherent) {
1197 if (!ts->mem_allocated)
1198 temp_allocate_frame(s, temp);
1199 tcg_out_st(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
1201 ts->val_type = TEMP_VAL_MEM;
1202 s->reg_to_temp[reg] = -1;
1206 /* Allocate a register belonging to reg1 & ~reg2 */
1207 static int tcg_reg_alloc(TCGContext *s, TCGRegSet reg1, TCGRegSet reg2)
1212 tcg_regset_andnot(reg_ct, reg1, reg2);
1214 /* first try free registers */
1215 for(i = 0; i < ARRAY_SIZE(tcg_target_reg_alloc_order); i++) {
1216 reg = tcg_target_reg_alloc_order[i];
1217 if (tcg_regset_test_reg(reg_ct, reg) && s->reg_to_temp[reg] == -1)
1221 /* XXX: do better spill choice */
1222 for(i = 0; i < ARRAY_SIZE(tcg_target_reg_alloc_order); i++) {
1223 reg = tcg_target_reg_alloc_order[i];
1224 if (tcg_regset_test_reg(reg_ct, reg)) {
1225 tcg_reg_free(s, reg);
1233 /* at the end of a basic block, we assume all temporaries are dead and
1234 all globals are stored at their canonical location */
1235 /* XXX: optimize by handling constants in another array ? */
1236 void tcg_reg_alloc_bb_end(TCGContext *s)
1241 for(i = 0; i < s->nb_globals; i++) {
1243 if (!ts->fixed_reg) {
1244 if (ts->val_type == TEMP_VAL_REG) {
1245 tcg_reg_free(s, ts->reg);
1250 for(i = s->nb_globals; i < s->nb_temps; i++) {
1252 if (ts->val_type != TEMP_VAL_CONST) {
1253 if (ts->val_type == TEMP_VAL_REG) {
1254 s->reg_to_temp[ts->reg] = -1;
1256 ts->val_type = TEMP_VAL_DEAD;
1261 #define IS_DEAD_IARG(n) ((dead_iargs >> (n)) & 1)
1263 static void tcg_reg_alloc_mov(TCGContext *s, const TCGOpDef *def,
1265 unsigned int dead_iargs)
1269 const TCGArgConstraint *arg_ct;
1271 ots = &s->temps[args[0]];
1272 ts = &s->temps[args[1]];
1273 arg_ct = &def->args_ct[0];
1275 if (ts->val_type == TEMP_VAL_REG) {
1276 if (IS_DEAD_IARG(0) && !ts->fixed_reg && !ots->fixed_reg) {
1277 /* the mov can be suppressed */
1278 if (ots->val_type == TEMP_VAL_REG)
1279 s->reg_to_temp[ots->reg] = -1;
1281 s->reg_to_temp[reg] = -1;
1282 ts->val_type = TEMP_VAL_DEAD;
1284 if (ots->val_type == TEMP_VAL_REG) {
1287 reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs);
1289 if (ts->reg != reg) {
1290 tcg_out_mov(s, reg, ts->reg);
1293 } else if (ts->val_type == TEMP_VAL_MEM) {
1294 if (ots->val_type == TEMP_VAL_REG) {
1297 reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs);
1299 tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
1300 } else if (ts->val_type == TEMP_VAL_CONST) {
1301 if (ots->val_type == TEMP_VAL_REG) {
1304 reg = tcg_reg_alloc(s, arg_ct->u.regs, s->reserved_regs);
1306 tcg_out_movi(s, ots->type, reg, ts->val);
1310 s->reg_to_temp[reg] = args[0];
1312 ots->val_type = TEMP_VAL_REG;
1313 ots->mem_coherent = 0;
1316 static void tcg_reg_alloc_op(TCGContext *s,
1317 const TCGOpDef *def, int opc,
1319 unsigned int dead_iargs)
1321 TCGRegSet allocated_regs;
1322 int i, k, nb_iargs, nb_oargs, reg;
1324 const TCGArgConstraint *arg_ct;
1326 TCGArg new_args[TCG_MAX_OP_ARGS];
1327 int const_args[TCG_MAX_OP_ARGS];
1329 nb_oargs = def->nb_oargs;
1330 nb_iargs = def->nb_iargs;
1332 /* copy constants */
1333 memcpy(new_args + nb_oargs + nb_iargs,
1334 args + nb_oargs + nb_iargs,
1335 sizeof(TCGArg) * def->nb_cargs);
1337 /* satisfy input constraints */
1338 tcg_regset_set(allocated_regs, s->reserved_regs);
1339 for(k = 0; k < nb_iargs; k++) {
1340 i = def->sorted_args[nb_oargs + k];
1342 arg_ct = &def->args_ct[i];
1343 ts = &s->temps[arg];
1344 if (ts->val_type == TEMP_VAL_MEM) {
1345 reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
1346 tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
1347 ts->val_type = TEMP_VAL_REG;
1349 ts->mem_coherent = 1;
1350 s->reg_to_temp[reg] = arg;
1351 } else if (ts->val_type == TEMP_VAL_CONST) {
1352 if (tcg_target_const_match(ts->val, arg_ct)) {
1353 /* constant is OK for instruction */
1355 new_args[i] = ts->val;
1358 /* need to move to a register*/
1359 reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
1360 tcg_out_movi(s, ts->type, reg, ts->val);
1364 assert(ts->val_type == TEMP_VAL_REG);
1365 if (arg_ct->ct & TCG_CT_IALIAS) {
1366 if (ts->fixed_reg) {
1367 /* if fixed register, we must allocate a new register
1368 if the alias is not the same register */
1369 if (arg != args[arg_ct->alias_index])
1370 goto allocate_in_reg;
1372 /* if the input is aliased to an output and if it is
1373 not dead after the instruction, we must allocate
1374 a new register and move it */
1375 if (!IS_DEAD_IARG(i - nb_oargs))
1376 goto allocate_in_reg;
1380 if (tcg_regset_test_reg(arg_ct->u.regs, reg)) {
1381 /* nothing to do : the constraint is satisfied */
1384 /* allocate a new register matching the constraint
1385 and move the temporary register into it */
1386 reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
1387 tcg_out_mov(s, reg, ts->reg);
1392 tcg_regset_set_reg(allocated_regs, reg);
1396 /* mark dead temporaries and free the associated registers */
1397 for(i = 0; i < nb_iargs; i++) {
1398 arg = args[nb_oargs + i];
1399 if (IS_DEAD_IARG(i)) {
1400 ts = &s->temps[arg];
1401 if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
1402 if (ts->val_type == TEMP_VAL_REG)
1403 s->reg_to_temp[ts->reg] = -1;
1404 ts->val_type = TEMP_VAL_DEAD;
1409 /* XXX: permit generic clobber register list ? */
1410 if (def->flags & TCG_OPF_CALL_CLOBBER) {
1411 for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) {
1412 if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
1413 tcg_reg_free(s, reg);
1418 /* satisfy the output constraints */
1419 tcg_regset_set(allocated_regs, s->reserved_regs);
1420 for(k = 0; k < nb_oargs; k++) {
1421 i = def->sorted_args[k];
1423 arg_ct = &def->args_ct[i];
1424 ts = &s->temps[arg];
1425 if (arg_ct->ct & TCG_CT_ALIAS) {
1426 reg = new_args[arg_ct->alias_index];
1428 /* if fixed register, we try to use it */
1430 if (ts->fixed_reg &&
1431 tcg_regset_test_reg(arg_ct->u.regs, reg)) {
1434 reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
1436 tcg_regset_set_reg(allocated_regs, reg);
1437 /* if a fixed register is used, then a move will be done afterwards */
1438 if (!ts->fixed_reg) {
1439 if (ts->val_type == TEMP_VAL_REG)
1440 s->reg_to_temp[ts->reg] = -1;
1441 ts->val_type = TEMP_VAL_REG;
1443 /* temp value is modified, so the value kept in memory is
1444 potentially not the same */
1445 ts->mem_coherent = 0;
1446 s->reg_to_temp[reg] = arg;
1452 if (def->flags & TCG_OPF_BB_END)
1453 tcg_reg_alloc_bb_end(s);
1455 /* emit instruction */
1456 tcg_out_op(s, opc, new_args, const_args);
1458 /* move the outputs in the correct register if needed */
1459 for(i = 0; i < nb_oargs; i++) {
1460 ts = &s->temps[args[i]];
1462 if (ts->fixed_reg && ts->reg != reg) {
1463 tcg_out_mov(s, ts->reg, reg);
1468 static int tcg_reg_alloc_call(TCGContext *s, const TCGOpDef *def,
1469 int opc, const TCGArg *args,
1470 unsigned int dead_iargs)
1472 int nb_iargs, nb_oargs, flags, nb_regs, i, reg, nb_params;
1473 TCGArg arg, func_arg;
1475 tcg_target_long stack_offset, call_stack_size;
1477 TCGRegSet allocated_regs;
1478 const TCGArgConstraint *arg_ct;
1482 nb_oargs = arg >> 16;
1483 nb_iargs = arg & 0xffff;
1484 nb_params = nb_iargs - 1;
1486 flags = args[nb_oargs + nb_iargs];
1488 nb_regs = tcg_target_get_call_iarg_regs_count(flags);
1489 if (nb_regs > nb_params)
1490 nb_regs = nb_params;
1492 /* assign stack slots first */
1493 /* XXX: preallocate call stack */
1494 call_stack_size = (nb_params - nb_regs) * sizeof(tcg_target_long);
1495 call_stack_size = (call_stack_size + TCG_TARGET_STACK_ALIGN - 1) &
1496 ~(TCG_TARGET_STACK_ALIGN - 1);
1497 tcg_out_addi(s, TCG_REG_CALL_STACK, -call_stack_size);
1500 for(i = nb_regs; i < nb_params; i++) {
1501 arg = args[nb_oargs + i];
1502 ts = &s->temps[arg];
1503 if (ts->val_type == TEMP_VAL_REG) {
1504 tcg_out_st(s, ts->type, ts->reg, TCG_REG_CALL_STACK, stack_offset);
1505 } else if (ts->val_type == TEMP_VAL_MEM) {
1506 reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type],
1508 /* XXX: not correct if reading values from the stack */
1509 tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
1510 tcg_out_st(s, ts->type, reg, TCG_REG_CALL_STACK, stack_offset);
1511 } else if (ts->val_type == TEMP_VAL_CONST) {
1512 reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type],
1514 /* XXX: sign extend may be needed on some targets */
1515 tcg_out_movi(s, ts->type, reg, ts->val);
1516 tcg_out_st(s, ts->type, reg, TCG_REG_CALL_STACK, stack_offset);
1520 stack_offset += sizeof(tcg_target_long);
1523 /* assign input registers */
1524 tcg_regset_set(allocated_regs, s->reserved_regs);
1525 for(i = 0; i < nb_regs; i++) {
1526 arg = args[nb_oargs + i];
1527 ts = &s->temps[arg];
1528 reg = tcg_target_call_iarg_regs[i];
1529 tcg_reg_free(s, reg);
1530 if (ts->val_type == TEMP_VAL_REG) {
1531 if (ts->reg != reg) {
1532 tcg_out_mov(s, reg, ts->reg);
1534 } else if (ts->val_type == TEMP_VAL_MEM) {
1535 tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
1536 } else if (ts->val_type == TEMP_VAL_CONST) {
1537 /* XXX: sign extend ? */
1538 tcg_out_movi(s, ts->type, reg, ts->val);
1542 tcg_regset_set_reg(allocated_regs, reg);
1545 /* assign function address */
1546 func_arg = args[nb_oargs + nb_iargs - 1];
1547 arg_ct = &def->args_ct[0];
1548 ts = &s->temps[func_arg];
1550 if (ts->val_type == TEMP_VAL_MEM) {
1551 reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
1552 tcg_out_ld(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
1554 } else if (ts->val_type == TEMP_VAL_REG) {
1556 if (!tcg_regset_test_reg(arg_ct->u.regs, reg)) {
1557 reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
1558 tcg_out_mov(s, reg, ts->reg);
1561 } else if (ts->val_type == TEMP_VAL_CONST) {
1562 if (tcg_target_const_match(ts->val, arg_ct)) {
1566 reg = tcg_reg_alloc(s, arg_ct->u.regs, allocated_regs);
1567 tcg_out_movi(s, ts->type, reg, ts->val);
1574 /* mark dead temporaries and free the associated registers */
1575 for(i = 0; i < nb_params; i++) {
1576 arg = args[nb_oargs + i];
1577 if (IS_DEAD_IARG(i)) {
1578 ts = &s->temps[arg];
1579 if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
1580 if (ts->val_type == TEMP_VAL_REG)
1581 s->reg_to_temp[ts->reg] = -1;
1582 ts->val_type = TEMP_VAL_DEAD;
1587 /* clobber call registers */
1588 for(reg = 0; reg < TCG_TARGET_NB_REGS; reg++) {
1589 if (tcg_regset_test_reg(tcg_target_call_clobber_regs, reg)) {
1590 tcg_reg_free(s, reg);
1594 /* store globals and free associated registers (we assume the call
1595 can modify any global. */
1596 for(i = 0; i < s->nb_globals; i++) {
1598 if (!ts->fixed_reg) {
1599 if (ts->val_type == TEMP_VAL_REG) {
1600 tcg_reg_free(s, ts->reg);
1605 tcg_out_op(s, opc, &func_arg, &const_func_arg);
1607 tcg_out_addi(s, TCG_REG_CALL_STACK, call_stack_size);
1609 /* assign output registers and emit moves if needed */
1610 for(i = 0; i < nb_oargs; i++) {
1612 ts = &s->temps[arg];
1613 reg = tcg_target_call_oarg_regs[i];
1614 tcg_reg_free(s, reg);
1615 if (ts->fixed_reg) {
1616 if (ts->reg != reg) {
1617 tcg_out_mov(s, ts->reg, reg);
1620 if (ts->val_type == TEMP_VAL_REG)
1621 s->reg_to_temp[ts->reg] = -1;
1622 ts->val_type = TEMP_VAL_REG;
1624 ts->mem_coherent = 0;
1625 s->reg_to_temp[reg] = arg;
1629 return nb_iargs + nb_oargs + def->nb_cargs + 1;
1632 #ifdef CONFIG_PROFILER
1634 static int64_t dyngen_table_op_count[NB_OPS];
1636 void dump_op_count(void)
1640 f = fopen("/tmp/op1.log", "w");
1641 for(i = 0; i < INDEX_op_end; i++) {
1642 fprintf(f, "%s %" PRId64 "\n", tcg_op_defs[i].name, dyngen_table_op_count[i]);
1645 f = fopen("/tmp/op2.log", "w");
1646 for(i = INDEX_op_end; i < NB_OPS; i++) {
1647 fprintf(f, "%s %" PRId64 "\n", tcg_op_defs[i].name, dyngen_table_op_count[i]);
1654 static inline int tcg_gen_code_common(TCGContext *s, uint8_t *gen_code_buf,
1657 int opc, op_index, macro_op_index;
1658 const TCGOpDef *def;
1659 unsigned int dead_iargs;
1663 if (unlikely(loglevel & CPU_LOG_TB_OP)) {
1664 fprintf(logfile, "OP:\n");
1665 tcg_dump_ops(s, logfile);
1666 fprintf(logfile, "\n");
1670 tcg_liveness_analysis(s);
1673 if (unlikely(loglevel & CPU_LOG_TB_OP_OPT)) {
1674 fprintf(logfile, "OP after la:\n");
1675 tcg_dump_ops(s, logfile);
1676 fprintf(logfile, "\n");
1680 tcg_reg_alloc_start(s);
1682 s->code_buf = gen_code_buf;
1683 s->code_ptr = gen_code_buf;
1685 macro_op_index = -1;
1686 args = gen_opparam_buf;
1689 #ifdef TCG_TARGET_NEEDS_PROLOGUE
1690 tcg_target_prologue(s);
1694 opc = gen_opc_buf[op_index];
1695 #ifdef CONFIG_PROFILER
1696 dyngen_table_op_count[opc]++;
1698 def = &tcg_op_defs[opc];
1700 printf("%s: %d %d %d\n", def->name,
1701 def->nb_oargs, def->nb_iargs, def->nb_cargs);
1705 case INDEX_op_mov_i32:
1706 #if TCG_TARGET_REG_BITS == 64
1707 case INDEX_op_mov_i64:
1709 dead_iargs = s->op_dead_iargs[op_index];
1710 tcg_reg_alloc_mov(s, def, args, dead_iargs);
1720 case INDEX_op_discard:
1723 ts = &s->temps[args[0]];
1724 /* mark the temporary as dead */
1725 if (ts->val_type != TEMP_VAL_CONST && !ts->fixed_reg) {
1726 if (ts->val_type == TEMP_VAL_REG)
1727 s->reg_to_temp[ts->reg] = -1;
1728 ts->val_type = TEMP_VAL_DEAD;
1732 case INDEX_op_macro_goto:
1733 macro_op_index = op_index; /* only used for exceptions */
1734 op_index = args[0] - 1;
1735 args = gen_opparam_buf + args[1];
1737 case INDEX_op_macro_end:
1738 macro_op_index = -1; /* only used for exceptions */
1739 op_index = args[0] - 1;
1740 args = gen_opparam_buf + args[1];
1742 case INDEX_op_macro_start:
1743 /* must never happen here */
1745 case INDEX_op_set_label:
1746 tcg_reg_alloc_bb_end(s);
1747 tcg_out_label(s, args[0], (long)s->code_ptr);
1750 dead_iargs = s->op_dead_iargs[op_index];
1751 args += tcg_reg_alloc_call(s, def, opc, args, dead_iargs);
1755 case 0 ... INDEX_op_end - 1:
1756 /* legacy dyngen ops */
1757 #ifdef CONFIG_PROFILER
1759 extern int64_t dyngen_old_op_count;
1760 dyngen_old_op_count++;
1763 tcg_reg_alloc_bb_end(s);
1764 if (search_pc >= 0) {
1765 s->code_ptr += def->copy_size;
1766 args += def->nb_args;
1768 args = dyngen_op(s, opc, args);
1772 /* Note: in order to speed up the code, it would be much
1773 faster to have specialized register allocator functions for
1774 some common argument patterns */
1775 dead_iargs = s->op_dead_iargs[op_index];
1776 tcg_reg_alloc_op(s, def, opc, args, dead_iargs);
1779 args += def->nb_args;
1781 if (search_pc >= 0 && search_pc < s->code_ptr - gen_code_buf) {
1782 if (macro_op_index >= 0)
1783 return macro_op_index;
1796 int dyngen_code(TCGContext *s, uint8_t *gen_code_buf)
1798 #ifdef CONFIG_PROFILER
1800 extern int64_t dyngen_op_count;
1801 extern int dyngen_op_count_max;
1803 n = (gen_opc_ptr - gen_opc_buf);
1804 dyngen_op_count += n;
1805 if (n > dyngen_op_count_max)
1806 dyngen_op_count_max = n;
1810 tcg_gen_code_common(s, gen_code_buf, -1);
1812 /* flush instruction cache */
1813 flush_icache_range((unsigned long)gen_code_buf,
1814 (unsigned long)s->code_ptr);
1815 return s->code_ptr - gen_code_buf;
1818 /* Return the index of the micro operation such as the pc after is <
1819 offset bytes from the start of the TB. The contents of gen_code_buf must
1820 not be changed, though writing the same values is ok.
1821 Return -1 if not found. */
1822 int dyngen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset)
1824 return tcg_gen_code_common(s, gen_code_buf, offset);