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 #ifndef TCG_TARGET_I386
  25 #define TCG_TARGET_I386 1
  26
  27 //#define TCG_TARGET_WORDS_BIGENDIAN
  28
  29 #if TCG_TARGET_REG_BITS == 64
  30 # define TCG_TARGET_NB_REGS 16
  31 #else
  32 # define TCG_TARGET_NB_REGS 8
  33 #endif
  34
  35 typedef enum {
  36     TCG_REG_EAX = 0,
  37     TCG_REG_ECX,
  38     TCG_REG_EDX,
  39     TCG_REG_EBX,
  40     TCG_REG_ESP,
  41     TCG_REG_EBP,
  42     TCG_REG_ESI,
  43     TCG_REG_EDI,
  44
  45     /* 64-bit registers; always define the symbols to avoid
  46        too much if-deffing.  */
  47     TCG_REG_R8,
  48     TCG_REG_R9,
  49     TCG_REG_R10,
  50     TCG_REG_R11,
  51     TCG_REG_R12,
  52     TCG_REG_R13,
  53     TCG_REG_R14,
  54     TCG_REG_R15,
  55     TCG_REG_RAX = TCG_REG_EAX,
  56     TCG_REG_RCX = TCG_REG_ECX,
  57     TCG_REG_RDX = TCG_REG_EDX,
  58     TCG_REG_RBX = TCG_REG_EBX,
  59     TCG_REG_RSP = TCG_REG_ESP,
  60     TCG_REG_RBP = TCG_REG_EBP,
  61     TCG_REG_RSI = TCG_REG_ESI,
  62     TCG_REG_RDI = TCG_REG_EDI,
  63 } TCGReg;
  64
  65 #define TCG_CT_CONST_S32 0x100
  66 #define TCG_CT_CONST_U32 0x200
  67
  68 /* used for function call generation */
  69 #define TCG_REG_CALL_STACK TCG_REG_ESP
  70 #define TCG_TARGET_STACK_ALIGN 16
  71 #if defined(_WIN64)
  72 #define TCG_TARGET_CALL_STACK_OFFSET 32
  73 #else
  74 #define TCG_TARGET_CALL_STACK_OFFSET 0
  75 #endif
  76
  77 /* optional instructions */
  78 #define TCG_TARGET_HAS_div2_i32         1
  79 #define TCG_TARGET_HAS_rot_i32          1
  80 #define TCG_TARGET_HAS_ext8s_i32        1
  81 #define TCG_TARGET_HAS_ext16s_i32       1
  82 #define TCG_TARGET_HAS_ext8u_i32        1
  83 #define TCG_TARGET_HAS_ext16u_i32       1
  84 #define TCG_TARGET_HAS_bswap16_i32      1
  85 #define TCG_TARGET_HAS_bswap32_i32      1
  86 #define TCG_TARGET_HAS_neg_i32          1
  87 #define TCG_TARGET_HAS_not_i32          1
  88 #define TCG_TARGET_HAS_andc_i32         0
  89 #define TCG_TARGET_HAS_orc_i32          0
  90 #define TCG_TARGET_HAS_eqv_i32          0
  91 #define TCG_TARGET_HAS_nand_i32         0
  92 #define TCG_TARGET_HAS_nor_i32          0
  93 #define TCG_TARGET_HAS_deposit_i32      1
  94 #if defined(__x86_64__) || defined(__i686__)
  95 /* Use cmov only if the compiler is already doing so.  */
  96 #define TCG_TARGET_HAS_movcond_i32      1
  97 #else
  98 #define TCG_TARGET_HAS_movcond_i32      0
  99 #endif
 100
 101 #if TCG_TARGET_REG_BITS == 64
 102 #define TCG_TARGET_HAS_div2_i64         1
 103 #define TCG_TARGET_HAS_rot_i64          1
 104 #define TCG_TARGET_HAS_ext8s_i64        1
 105 #define TCG_TARGET_HAS_ext16s_i64       1
 106 #define TCG_TARGET_HAS_ext32s_i64       1
 107 #define TCG_TARGET_HAS_ext8u_i64        1
 108 #define TCG_TARGET_HAS_ext16u_i64       1
 109 #define TCG_TARGET_HAS_ext32u_i64       1
 110 #define TCG_TARGET_HAS_bswap16_i64      1
 111 #define TCG_TARGET_HAS_bswap32_i64      1
 112 #define TCG_TARGET_HAS_bswap64_i64      1
 113 #define TCG_TARGET_HAS_neg_i64          1
 114 #define TCG_TARGET_HAS_not_i64          1
 115 #define TCG_TARGET_HAS_andc_i64         0
 116 #define TCG_TARGET_HAS_orc_i64          0
 117 #define TCG_TARGET_HAS_eqv_i64          0
 118 #define TCG_TARGET_HAS_nand_i64         0
 119 #define TCG_TARGET_HAS_nor_i64          0
 120 #define TCG_TARGET_HAS_deposit_i64      1
 121 #define TCG_TARGET_HAS_movcond_i64      1
 122 #endif
 123
 124 #define TCG_TARGET_deposit_i32_valid(ofs, len) \
 125     (((ofs) == 0 && (len) == 8) || ((ofs) == 8 && (len) == 8) || \
 126      ((ofs) == 0 && (len) == 16))
 127 #define TCG_TARGET_deposit_i64_valid    TCG_TARGET_deposit_i32_valid
 128
 129 #if TCG_TARGET_REG_BITS == 64
 130 # define TCG_AREG0 TCG_REG_R14
 131 #else
 132 # define TCG_AREG0 TCG_REG_EBP
 133 #endif
 134
 135 static inline void flush_icache_range(tcg_target_ulong start,
 136                                       tcg_target_ulong stop)
 137 {
 138 }
 139
 140 #endif