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/*
* Software MMU support
*
* Generate inline load/store functions for one MMU mode and data
* size.
*
* Generate a store function as well as signed and unsigned loads.
*
* Not used directly but included from cpu_ldst.h.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#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 DATA_SIZE == 8
#define RES_TYPE uint64_t
#else
#define RES_TYPE uint32_t
#endif
#ifdef SOFTMMU_CODE_ACCESS
#define ADDR_READ addr_code
#define MMUSUFFIX _cmmu
#else
#define ADDR_READ addr_read
#define MMUSUFFIX _mmu
#endif
/* generic load/store macros */
static inline RES_TYPE
glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
{
int page_index;
RES_TYPE res;
target_ulong addr;
int mmu_idx;
addr = ptr;
page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
mmu_idx = CPU_MMU_INDEX;
if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
res = glue(glue(helper_ld, SUFFIX), MMUSUFFIX)(env, addr, mmu_idx);
} else {
uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
res = glue(glue(ld, USUFFIX), _p)((uint8_t *)hostaddr);
}
return res;
}
#if DATA_SIZE <= 2
static inline int
glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
{
int res, page_index;
target_ulong addr;
int mmu_idx;
addr = ptr;
page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
mmu_idx = CPU_MMU_INDEX;
if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
res = (DATA_STYPE)glue(glue(helper_ld, SUFFIX),
MMUSUFFIX)(env, addr, mmu_idx);
} else {
uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
res = glue(glue(lds, SUFFIX), _p)((uint8_t *)hostaddr);
}
return res;
}
#endif
#ifndef SOFTMMU_CODE_ACCESS
/* generic store macro */
static inline void
glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
RES_TYPE v)
{
int page_index;
target_ulong addr;
int mmu_idx;
addr = ptr;
page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
mmu_idx = CPU_MMU_INDEX;
if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
glue(glue(helper_st, SUFFIX), MMUSUFFIX)(env, addr, v, mmu_idx);
} else {
uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
glue(glue(st, SUFFIX), _p)((uint8_t *)hostaddr, v);
}
}
#endif /* !SOFTMMU_CODE_ACCESS */
#undef RES_TYPE
#undef DATA_TYPE
#undef DATA_STYPE
#undef SUFFIX
#undef USUFFIX
#undef DATA_SIZE
#undef MMUSUFFIX
#undef ADDR_READ
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