LXR qemu/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
  39typedef 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
  78extern bool have_bmi1;
  79extern 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
 112#if TCG_TARGET_REG_BITS == 64
 113#define TCG_TARGET_HAS_extrl_i64_i32    0
 114#define TCG_TARGET_HAS_extrh_i64_i32    0
 115#define TCG_TARGET_HAS_div2_i64         1
 116#define TCG_TARGET_HAS_rot_i64          1
 117#define TCG_TARGET_HAS_ext8s_i64        1
 118#define TCG_TARGET_HAS_ext16s_i64       1
 119#define TCG_TARGET_HAS_ext32s_i64       1
 120#define TCG_TARGET_HAS_ext8u_i64        1
 121#define TCG_TARGET_HAS_ext16u_i64       1
 122#define TCG_TARGET_HAS_ext32u_i64       1
 123#define TCG_TARGET_HAS_bswap16_i64      1
 124#define TCG_TARGET_HAS_bswap32_i64      1
 125#define TCG_TARGET_HAS_bswap64_i64      1
 126#define TCG_TARGET_HAS_neg_i64          1
 127#define TCG_TARGET_HAS_not_i64          1
 128#define TCG_TARGET_HAS_andc_i64         have_bmi1
 129#define TCG_TARGET_HAS_orc_i64          0
 130#define TCG_TARGET_HAS_eqv_i64          0
 131#define TCG_TARGET_HAS_nand_i64         0
 132#define TCG_TARGET_HAS_nor_i64          0
 133#define TCG_TARGET_HAS_clz_i64          1
 134#define TCG_TARGET_HAS_ctz_i64          1
 135#define TCG_TARGET_HAS_ctpop_i64        have_popcnt
 136#define TCG_TARGET_HAS_deposit_i64      1
 137#define TCG_TARGET_HAS_extract_i64      1
 138#define TCG_TARGET_HAS_sextract_i64     0
 139#define TCG_TARGET_HAS_movcond_i64      1
 140#define TCG_TARGET_HAS_add2_i64         1
 141#define TCG_TARGET_HAS_sub2_i64         1
 142#define TCG_TARGET_HAS_mulu2_i64        1
 143#define TCG_TARGET_HAS_muls2_i64        1
 144#define TCG_TARGET_HAS_muluh_i64        0
 145#define TCG_TARGET_HAS_mulsh_i64        0
 146#endif
 147
 148#define TCG_TARGET_deposit_i32_valid(ofs, len) \
 149    (((ofs) == 0 && (len) == 8) || ((ofs) == 8 && (len) == 8) || \
 150     ((ofs) == 0 && (len) == 16))
 151#define TCG_TARGET_deposit_i64_valid    TCG_TARGET_deposit_i32_valid
 152
 153/* Check for the possibility of high-byte extraction and, for 64-bit,
 154   zero-extending 32-bit right-shift.  */
 155#define TCG_TARGET_extract_i32_valid(ofs, len) ((ofs) == 8 && (len) == 8)
 156#define TCG_TARGET_extract_i64_valid(ofs, len) \
 157    (((ofs) == 8 && (len) == 8) || ((ofs) + (len)) == 32)
 158
 159#if TCG_TARGET_REG_BITS == 64
 160# define TCG_AREG0 TCG_REG_R14
 161#else
 162# define TCG_AREG0 TCG_REG_EBP
 163#endif
 164
 165static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
 166{
 167}
 168
 169/* This defines the natural memory order supported by this
 170 * architecture before guarantees made by various barrier
 171 * instructions.
 172 *
 173 * The x86 has a pretty strong memory ordering which only really
 174 * allows for some stores to be re-ordered after loads.
 175 */
 176#include "tcg-mo.h"
 177
 178#define TCG_TARGET_DEFAULT_MO (TCG_MO_ALL & ~TCG_MO_ST_LD)
 179
 180#endif
 181