diff options
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/tcg-pool.inc.c | 85 | ||||
| -rw-r--r-- | tcg/tcg.c | 9 | ||||
| -rw-r--r-- | tcg/tcg.h | 4 |
3 files changed, 98 insertions, 0 deletions
diff --git a/tcg/tcg-pool.inc.c b/tcg/tcg-pool.inc.c new file mode 100644 index 0000000..8a85131 --- /dev/null +++ b/tcg/tcg-pool.inc.c @@ -0,0 +1,85 @@ +/* + * TCG Backend Data: constant pool. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +typedef struct TCGLabelPoolData { + struct TCGLabelPoolData *next; + tcg_target_ulong data; + tcg_insn_unit *label; + intptr_t addend; + int type; +} TCGLabelPoolData; + + +static void new_pool_label(TCGContext *s, tcg_target_ulong data, int type, + tcg_insn_unit *label, intptr_t addend) +{ + TCGLabelPoolData *n = tcg_malloc(sizeof(*n)); + TCGLabelPoolData *i, **pp; + + n->data = data; + n->label = label; + n->type = type; + n->addend = addend; + + /* Insertion sort on the pool. */ + for (pp = &s->pool_labels; (i = *pp) && i->data < data; pp = &i->next) { + continue; + } + n->next = *pp; + *pp = n; +} + +/* To be provided by cpu/tcg-target.inc.c. */ +static void tcg_out_nop_fill(tcg_insn_unit *p, int count); + +static bool tcg_out_pool_finalize(TCGContext *s) +{ + TCGLabelPoolData *p = s->pool_labels; + tcg_target_ulong d, *a; + + if (p == NULL) { + return true; + } + + /* ??? Round up to qemu_icache_linesize, but then do not round + again when allocating the next TranslationBlock structure. */ + a = (void *)ROUND_UP((uintptr_t)s->code_ptr, sizeof(tcg_target_ulong)); + tcg_out_nop_fill(s->code_ptr, (tcg_insn_unit *)a - s->code_ptr); + s->data_gen_ptr = a; + + /* Ensure the first comparison fails. */ + d = p->data + 1; + + for (; p != NULL; p = p->next) { + if (p->data != d) { + d = p->data; + if (unlikely((void *)a > s->code_gen_highwater)) { + return false; + } + *a++ = d; + } + patch_reloc(p->label, p->type, (intptr_t)(a - 1), p->addend); + } + + s->code_ptr = (void *)a; + return true; +} @@ -399,6 +399,7 @@ TranslationBlock *tcg_tb_alloc(TCGContext *s) return NULL; } s->code_gen_ptr = next; + s->data_gen_ptr = NULL; return tb; } @@ -2619,6 +2620,9 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) #ifdef TCG_TARGET_NEED_LDST_LABELS s->ldst_labels = NULL; #endif +#ifdef TCG_TARGET_NEED_POOL_LABELS + s->pool_labels = NULL; +#endif num_insns = -1; for (oi = s->gen_op_buf[0].next; oi != 0; oi = oi_next) { @@ -2698,6 +2702,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) return -1; } #endif +#ifdef TCG_TARGET_NEED_POOL_LABELS + if (!tcg_out_pool_finalize(s)) { + return -1; + } +#endif /* flush instruction cache */ flush_icache_range((uintptr_t)s->code_buf, (uintptr_t)s->code_ptr); @@ -702,6 +702,7 @@ struct TCGContext { void *code_gen_buffer; size_t code_gen_buffer_size; void *code_gen_ptr; + void *data_gen_ptr; /* Threshold to flush the translated code buffer. */ void *code_gen_highwater; @@ -716,6 +717,9 @@ struct TCGContext { #ifdef TCG_TARGET_NEED_LDST_LABELS struct TCGLabelQemuLdst *ldst_labels; #endif +#ifdef TCG_TARGET_NEED_POOL_LABELS + struct TCGLabelPoolData *pool_labels; +#endif TCGTempSet free_temps[TCG_TYPE_COUNT * 2]; TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */ |