softmmu_header.h

   1 /*
   2  *  Software MMU support
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #if DATA_SIZE == 8
  21 #define SUFFIX q
  22 #define USUFFIX q
  23 #define DATA_TYPE uint64_t
  24 #elif DATA_SIZE == 4
  25 #define SUFFIX l
  26 #define USUFFIX l
  27 #define DATA_TYPE uint32_t
  28 #elif DATA_SIZE == 2
  29 #define SUFFIX w
  30 #define USUFFIX uw
  31 #define DATA_TYPE uint16_t
  32 #define DATA_STYPE int16_t
  33 #elif DATA_SIZE == 1
  34 #define SUFFIX b
  35 #define USUFFIX ub
  36 #define DATA_TYPE uint8_t
  37 #define DATA_STYPE int8_t
  38 #else
  39 #error unsupported data size
  40 #endif
  41
  42 #if ACCESS_TYPE == 0
  43
  44 #define CPU_MEM_INDEX 0
  45 #define MMUSUFFIX _mmu
  46
  47 #elif ACCESS_TYPE == 1
  48
  49 #define CPU_MEM_INDEX 1
  50 #define MMUSUFFIX _mmu
  51
  52 #elif ACCESS_TYPE == 2
  53
  54 #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
  55 #define MMUSUFFIX _mmu
  56
  57 #elif ACCESS_TYPE == 3
  58
  59 #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
  60 #define MMUSUFFIX _cmmu
  61
  62 #else
  63 #error invalid ACCESS_TYPE
  64 #endif
  65
  66 #if DATA_SIZE == 8
  67 #define RES_TYPE uint64_t
  68 #else
  69 #define RES_TYPE int
  70 #endif
  71
  72
  73 DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(unsigned long addr,
  74                                                          int is_user);
  75 void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(unsigned long addr, DATA_TYPE v, int is_user);
  76
  77 static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(void *ptr)
  78 {
  79     int index;
  80     RES_TYPE res;
  81     unsigned long addr, physaddr;
  82     int is_user;
  83
  84     addr = (unsigned long)ptr;
  85     index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
  86     is_user = CPU_MEM_INDEX;
  87     if (__builtin_expect(env->tlb_read[is_user][index].address !=
  88                          (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
  89         res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
  90     } else {
  91         physaddr = addr + env->tlb_read[is_user][index].addend;
  92         res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
  93     }
  94     return res;
  95 }
  96
  97 #if DATA_SIZE <= 2
  98 static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(void *ptr)
  99 {
 100     int res, index;
 101     unsigned long addr, physaddr;
 102     int is_user;
 103
 104     addr = (unsigned long)ptr;
 105     index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 106     is_user = CPU_MEM_INDEX;
 107     if (__builtin_expect(env->tlb_read[is_user][index].address !=
 108                          (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
 109         res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
 110     } else {
 111         physaddr = addr + env->tlb_read[is_user][index].addend;
 112         res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
 113     }
 114     return res;
 115 }
 116 #endif
 117
 118 static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v)
 119 {
 120     int index;
 121     unsigned long addr, physaddr;
 122     int is_user;
 123
 124     addr = (unsigned long)ptr;
 125     index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
 126     is_user = CPU_MEM_INDEX;
 127     if (__builtin_expect(env->tlb_write[is_user][index].address !=
 128                          (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
 129         glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user);
 130     } else {
 131         physaddr = addr + env->tlb_write[is_user][index].addend;
 132         glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
 133     }
 134 }
 135
 136 #undef RES_TYPE
 137 #undef DATA_TYPE
 138 #undef DATA_STYPE
 139 #undef SUFFIX
 140 #undef USUFFIX
 141 #undef DATA_SIZE
 142 #undef CPU_MEM_INDEX
 143 #undef MMUSUFFIX