tcg/tcg-internal.h

   1 /*
   2  * Internal declarations for Tiny Code Generator for QEMU
   3  *
   4  * Copyright (c) 2008 Fabrice Bellard
   5  *
   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:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  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
  22  * THE SOFTWARE.
  23  */
  24
  25 #ifndef TCG_INTERNAL_H
  26 #define TCG_INTERNAL_H
  27
  28 #include "tcg/helper-info.h"
  29
  30 #define TCG_HIGHWATER 1024
  31
  32 extern TCGContext tcg_init_ctx;
  33 extern TCGContext **tcg_ctxs;
  34 extern unsigned int tcg_cur_ctxs;
  35 extern unsigned int tcg_max_ctxs;
  36
  37 void tcg_region_init(size_t tb_size, int splitwx, unsigned max_cpus);
  38 bool tcg_region_alloc(TCGContext *s);
  39 void tcg_region_initial_alloc(TCGContext *s);
  40 void tcg_region_prologue_set(TCGContext *s);
  41
  42 static inline void *tcg_call_func(TCGOp *op)
  43 {
  44     return (void *)(uintptr_t)op->args[TCGOP_CALLO(op) + TCGOP_CALLI(op)];
  45 }
  46
  47 static inline const TCGHelperInfo *tcg_call_info(TCGOp *op)
  48 {
  49     return (void *)(uintptr_t)op->args[TCGOP_CALLO(op) + TCGOP_CALLI(op) + 1];
  50 }
  51
  52 static inline unsigned tcg_call_flags(TCGOp *op)
  53 {
  54     return tcg_call_info(op)->flags;
  55 }
  56
  57 #if TCG_TARGET_REG_BITS == 32
  58 static inline TCGv_i32 TCGV_LOW(TCGv_i64 t)
  59 {
  60     return temp_tcgv_i32(tcgv_i64_temp(t) + HOST_BIG_ENDIAN);
  61 }
  62 static inline TCGv_i32 TCGV_HIGH(TCGv_i64 t)
  63 {
  64     return temp_tcgv_i32(tcgv_i64_temp(t) + !HOST_BIG_ENDIAN);
  65 }
  66 #else
  67 extern TCGv_i32 TCGV_LOW(TCGv_i64) QEMU_ERROR("32-bit code path is reachable");
  68 extern TCGv_i32 TCGV_HIGH(TCGv_i64) QEMU_ERROR("32-bit code path is reachable");
  69 #endif
  70
  71 static inline TCGv_i64 TCGV128_LOW(TCGv_i128 t)
  72 {
  73     /* For 32-bit, offset by 2, which may then have TCGV_{LOW,HIGH} applied. */
  74     int o = HOST_BIG_ENDIAN ? 64 / TCG_TARGET_REG_BITS : 0;
  75     return temp_tcgv_i64(tcgv_i128_temp(t) + o);
  76 }
  77
  78 static inline TCGv_i64 TCGV128_HIGH(TCGv_i128 t)
  79 {
  80     int o = HOST_BIG_ENDIAN ? 0 : 64 / TCG_TARGET_REG_BITS;
  81     return temp_tcgv_i64(tcgv_i128_temp(t) + o);
  82 }
  83
  84 bool tcg_target_has_memory_bswap(MemOp memop);
  85
  86 #endif /* TCG_INTERNAL_H */