tcg/i386/tcg-target.h

   1 /*
   2  * 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 I386_TCG_TARGET_H
  26 #define I386_TCG_TARGET_H
  27
  28 #define TCG_TARGET_INSN_UNIT_SIZE  1
  29 #define TCG_TARGET_TLB_DISPLACEMENT_BITS 31
  30
  31 #ifdef __x86_64__
  32 # define TCG_TARGET_REG_BITS  64
  33 # define TCG_TARGET_NB_REGS   16
  34 #else
  35 # define TCG_TARGET_REG_BITS  32
  36 # define TCG_TARGET_NB_REGS    8
  37 #endif
  38
  39 typedef enum {
  40     TCG_REG_EAX = 0,
  41     TCG_REG_ECX,
  42     TCG_REG_EDX,
  43     TCG_REG_EBX,
  44     TCG_REG_ESP,
  45     TCG_REG_EBP,
  46     TCG_REG_ESI,
  47     TCG_REG_EDI,
  48
  49     /* 64-bit registers; always define the symbols to avoid
  50        too much if-deffing.  */
  51     TCG_REG_R8,
  52     TCG_REG_R9,
  53     TCG_REG_R10,
  54     TCG_REG_R11,
  55     TCG_REG_R12,
  56     TCG_REG_R13,
  57     TCG_REG_R14,
  58     TCG_REG_R15,
  59     TCG_REG_RAX = TCG_REG_EAX,
  60     TCG_REG_RCX = TCG_REG_ECX,
  61     TCG_REG_RDX = TCG_REG_EDX,
  62     TCG_REG_RBX = TCG_REG_EBX,
  63     TCG_REG_RSP = TCG_REG_ESP,
  64     TCG_REG_RBP = TCG_REG_EBP,
  65     TCG_REG_RSI = TCG_REG_ESI,
  66     TCG_REG_RDI = TCG_REG_EDI,
  67 } TCGReg;
  68
  69 /* used for function call generation */
  70 #define TCG_REG_CALL_STACK TCG_REG_ESP
  71 #define TCG_TARGET_STACK_ALIGN 16
  72 #if defined(_WIN64)
  73 #define TCG_TARGET_CALL_STACK_OFFSET 32
  74 #else
  75 #define TCG_TARGET_CALL_STACK_OFFSET 0
  76 #endif
  77
  78 extern bool have_bmi1;
  79 extern bool have_popcnt;
  80
  81 /* optional instructions */
  82 #define TCG_TARGET_HAS_div2_i32         1
  83 #define TCG_TARGET_HAS_rot_i32          1
  84 #define TCG_TARGET_HAS_ext8s_i32        1
  85 #define TCG_TARGET_HAS_ext16s_i32       1
  86 #define TCG_TARGET_HAS_ext8u_i32        1
  87 #define TCG_TARGET_HAS_ext16u_i32       1
  88 #define TCG_TARGET_HAS_bswap16_i32      1
  89 #define TCG_TARGET_HAS_bswap32_i32      1
  90 #define TCG_TARGET_HAS_neg_i32          1
  91 #define TCG_TARGET_HAS_not_i32          1
  92 #define TCG_TARGET_HAS_andc_i32         have_bmi1
  93 #define TCG_TARGET_HAS_orc_i32          0
  94 #define TCG_TARGET_HAS_eqv_i32          0
  95 #define TCG_TARGET_HAS_nand_i32         0
  96 #define TCG_TARGET_HAS_nor_i32          0
  97 #define TCG_TARGET_HAS_clz_i32          1
  98 #define TCG_TARGET_HAS_ctz_i32          1
  99 #define TCG_TARGET_HAS_ctpop_i32        have_popcnt
 100 #define TCG_TARGET_HAS_deposit_i32      1
 101 #define TCG_TARGET_HAS_extract_i32      1
 102 #define TCG_TARGET_HAS_sextract_i32     1
 103 #define TCG_TARGET_HAS_movcond_i32      1
 104 #define TCG_TARGET_HAS_add2_i32         1
 105 #define TCG_TARGET_HAS_sub2_i32         1
 106 #define TCG_TARGET_HAS_mulu2_i32        1
 107 #define TCG_TARGET_HAS_muls2_i32        1
 108 #define TCG_TARGET_HAS_muluh_i32        0
 109 #define TCG_TARGET_HAS_mulsh_i32        0
 110 #define TCG_TARGET_HAS_goto_ptr         1
 111 #define TCG_TARGET_HAS_direct_jump      1
 112
 113 #if TCG_TARGET_REG_BITS == 64
 114 #define TCG_TARGET_HAS_extrl_i64_i32    0
 115 #define TCG_TARGET_HAS_extrh_i64_i32    0
 116 #define TCG_TARGET_HAS_div2_i64         1
 117 #define TCG_TARGET_HAS_rot_i64          1
 118 #define TCG_TARGET_HAS_ext8s_i64        1
 119 #define TCG_TARGET_HAS_ext16s_i64       1
 120 #define TCG_TARGET_HAS_ext32s_i64       1
 121 #define TCG_TARGET_HAS_ext8u_i64        1
 122 #define TCG_TARGET_HAS_ext16u_i64       1
 123 #define TCG_TARGET_HAS_ext32u_i64       1
 124 #define TCG_TARGET_HAS_bswap16_i64      1
 125 #define TCG_TARGET_HAS_bswap32_i64      1
 126 #define TCG_TARGET_HAS_bswap64_i64      1
 127 #define TCG_TARGET_HAS_neg_i64          1
 128 #define TCG_TARGET_HAS_not_i64          1
 129 #define TCG_TARGET_HAS_andc_i64         have_bmi1
 130 #define TCG_TARGET_HAS_orc_i64          0
 131 #define TCG_TARGET_HAS_eqv_i64          0
 132 #define TCG_TARGET_HAS_nand_i64         0
 133 #define TCG_TARGET_HAS_nor_i64          0
 134 #define TCG_TARGET_HAS_clz_i64          1
 135 #define TCG_TARGET_HAS_ctz_i64          1
 136 #define TCG_TARGET_HAS_ctpop_i64        have_popcnt
 137 #define TCG_TARGET_HAS_deposit_i64      1
 138 #define TCG_TARGET_HAS_extract_i64      1
 139 #define TCG_TARGET_HAS_sextract_i64     0
 140 #define TCG_TARGET_HAS_movcond_i64      1
 141 #define TCG_TARGET_HAS_add2_i64         1
 142 #define TCG_TARGET_HAS_sub2_i64         1
 143 #define TCG_TARGET_HAS_mulu2_i64        1
 144 #define TCG_TARGET_HAS_muls2_i64        1
 145 #define TCG_TARGET_HAS_muluh_i64        0
 146 #define TCG_TARGET_HAS_mulsh_i64        0
 147 #endif
 148
 149 #define TCG_TARGET_deposit_i32_valid(ofs, len) \
 150     (((ofs) == 0 && (len) == 8) || ((ofs) == 8 && (len) == 8) || \
 151      ((ofs) == 0 && (len) == 16))
 152 #define TCG_TARGET_deposit_i64_valid    TCG_TARGET_deposit_i32_valid
 153
 154 /* Check for the possibility of high-byte extraction and, for 64-bit,
 155    zero-extending 32-bit right-shift.  */
 156 #define TCG_TARGET_extract_i32_valid(ofs, len) ((ofs) == 8 && (len) == 8)
 157 #define TCG_TARGET_extract_i64_valid(ofs, len) \
 158     (((ofs) == 8 && (len) == 8) || ((ofs) + (len)) == 32)
 159
 160 #if TCG_TARGET_REG_BITS == 64
 161 # define TCG_AREG0 TCG_REG_R14
 162 #else
 163 # define TCG_AREG0 TCG_REG_EBP
 164 #endif
 165
 166 static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
 167 {
 168 }
 169
 170 static inline void tb_target_set_jmp_target(uintptr_t tc_ptr,
 171                                             uintptr_t jmp_addr, uintptr_t addr)
 172 {
 173     /* patch the branch destination */
 174     atomic_set((int32_t *)jmp_addr, addr - (jmp_addr + 4));
 175     /* no need to flush icache explicitly */
 176 }
 177
 178 /* This defines the natural memory order supported by this
 179  * architecture before guarantees made by various barrier
 180  * instructions.
 181  *
 182  * The x86 has a pretty strong memory ordering which only really
 183  * allows for some stores to be re-ordered after loads.
 184  */
 185 #include "tcg-mo.h"
 186
 187 #define TCG_TARGET_DEFAULT_MO (TCG_MO_ALL & ~TCG_MO_ST_LD)
 188
 189 #ifdef CONFIG_SOFTMMU
 190 #define TCG_TARGET_NEED_LDST_LABELS
 191 #endif
 192 #define TCG_TARGET_NEED_POOL_LABELS
 193
 194 #endif