qemu/softmmu_header.h

/*
 *  Software MMU support
 * 
 *  Copyright (c) 2003 Fabrice Bellard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#if DATA_SIZE == 8
#define SUFFIX q
#define USUFFIX q
#define DATA_TYPE uint64_t
#elif DATA_SIZE == 4
#define SUFFIX l
#define USUFFIX l
#define DATA_TYPE uint32_t
#elif DATA_SIZE == 2
#define SUFFIX w
#define USUFFIX uw
#define DATA_TYPE uint16_t
#define DATA_STYPE int16_t
#elif DATA_SIZE == 1
#define SUFFIX b
#define USUFFIX ub
#define DATA_TYPE uint8_t
#define DATA_STYPE int8_t
#else
#error unsupported data size
#endif

#if ACCESS_TYPE == 0

#define CPU_MEM_INDEX 0
#define MMUSUFFIX _mmu

#elif ACCESS_TYPE == 1

#define CPU_MEM_INDEX 1
#define MMUSUFFIX _mmu

#elif ACCESS_TYPE == 2

#define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
#define MMUSUFFIX _mmu

#elif ACCESS_TYPE == 3

#define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
#define MMUSUFFIX _cmmu

#else
#error invalid ACCESS_TYPE
#endif

#if DATA_SIZE == 8
#define RES_TYPE uint64_t
#else
#define RES_TYPE int
#endif


DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(unsigned long addr,
                                                         int is_user);
void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(unsigned long addr, DATA_TYPE v, int is_user);

static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(void *ptr)
{
    int index;
    RES_TYPE res;
    unsigned long addr, physaddr;
    int is_user;

    addr = (unsigned long)ptr;
    index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
    is_user = CPU_MEM_INDEX;
    if (__builtin_expect(env->tlb_read[is_user][index].address != 
                         (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
        res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
    } else {
        physaddr = addr + env->tlb_read[is_user][index].addend;
        res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
    }
    return res;
}

#if DATA_SIZE <= 2
static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(void *ptr)
{
    int res, index;
    unsigned long addr, physaddr;
    int is_user;

    addr = (unsigned long)ptr;
    index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
    is_user = CPU_MEM_INDEX;
    if (__builtin_expect(env->tlb_read[is_user][index].address != 
                         (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
        res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
    } else {
        physaddr = addr + env->tlb_read[is_user][index].addend;
        res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
    }
    return res;
}
#endif

static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v)
{
    int index;
    unsigned long addr, physaddr;
    int is_user;

    addr = (unsigned long)ptr;
    index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
    is_user = CPU_MEM_INDEX;
    if (__builtin_expect(env->tlb_write[is_user][index].address != 
                         (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
        glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user);
    } else {
        physaddr = addr + env->tlb_write[is_user][index].addend;
        glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
    }
}

#undef RES_TYPE
#undef DATA_TYPE
#undef DATA_STYPE
#undef SUFFIX
#undef USUFFIX
#undef DATA_SIZE
#undef CPU_MEM_INDEX
#undef MMUSUFFIX