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/*
* 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 DATA_TYPE uint64_t
#elif DATA_SIZE == 4
#define SUFFIX l
#define DATA_TYPE uint32_t
#elif DATA_SIZE == 2
#define SUFFIX w
#define DATA_TYPE uint16_t
#define DATA_STYPE int16_t
#elif DATA_SIZE == 1
#define SUFFIX b
#define DATA_TYPE uint8_t
#define DATA_STYPE int8_t
#else
#error unsupported data size
#endif
#if MEMUSER == 0
#define MEMSUFFIX _kernel
#else
#define MEMSUFFIX _user
#endif
#if DATA_SIZE == 8
#define RES_TYPE uint64_t
#else
#define RES_TYPE int
#endif
#if MEMUSER == 0
DATA_TYPE __attribute((regparm(1))) glue(glue(__ld, SUFFIX), _mmu)(unsigned long addr);
void __attribute((regparm(2))) glue(glue(__st, SUFFIX), _mmu)(unsigned long addr, DATA_TYPE v);
#endif
static inline int glue(glue(ldu, SUFFIX), MEMSUFFIX)(void *ptr)
{
int index;
RES_TYPE res;
unsigned long addr, physaddr;
addr = (unsigned long)ptr;
index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
if (__builtin_expect(env->tlb_read[MEMUSER][index].address !=
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
res = glue(glue(__ld, SUFFIX), _mmu)(addr);
} else {
physaddr = addr + env->tlb_read[MEMUSER][index].addend;
res = glue(glue(ldu, SUFFIX), _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;
addr = (unsigned long)ptr;
index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
if (__builtin_expect(env->tlb_read[MEMUSER][index].address !=
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
res = (DATA_STYPE)glue(glue(__ld, SUFFIX), _mmu)(addr);
} else {
physaddr = addr + env->tlb_read[MEMUSER][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;
addr = (unsigned long)ptr;
index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
if (__builtin_expect(env->tlb_write[MEMUSER][index].address !=
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
glue(glue(__st, SUFFIX), _mmu)(addr, v);
} else {
physaddr = addr + env->tlb_write[MEMUSER][index].addend;
glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
}
}
#undef RES_TYPE
#undef DATA_TYPE
#undef DATA_STYPE
#undef SUFFIX
#undef DATA_SIZE
#undef MEMSUFFIX
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