210 lines
5.9 KiB
C
210 lines
5.9 KiB
C
/*
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* Software MMU support
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*
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* Generate inline load/store functions for one MMU mode and data
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* size.
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*
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* Generate a store function as well as signed and unsigned loads.
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*
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* Not used directly but included from cpu_ldst.h.
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined(SOFTMMU_CODE_ACCESS)
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#include "trace.h"
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#endif
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#include "trace/mem.h"
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#if DATA_SIZE == 8
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#define SUFFIX q
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#define USUFFIX q
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#define DATA_TYPE uint64_t
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#define SHIFT 3
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#elif DATA_SIZE == 4
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#define SUFFIX l
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#define USUFFIX l
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#define DATA_TYPE uint32_t
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#define SHIFT 2
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#elif DATA_SIZE == 2
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#define SUFFIX w
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#define USUFFIX uw
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#define DATA_TYPE uint16_t
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#define DATA_STYPE int16_t
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#define SHIFT 1
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#elif DATA_SIZE == 1
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#define SUFFIX b
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#define USUFFIX ub
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#define DATA_TYPE uint8_t
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#define DATA_STYPE int8_t
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#define SHIFT 0
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#else
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#error unsupported data size
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#endif
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#if DATA_SIZE == 8
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#define RES_TYPE uint64_t
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#else
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#define RES_TYPE uint32_t
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#endif
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#ifdef SOFTMMU_CODE_ACCESS
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#define ADDR_READ addr_code
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#define MMUSUFFIX _cmmu
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#define URETSUFFIX SUFFIX
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#define SRETSUFFIX SUFFIX
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#else
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#define ADDR_READ addr_read
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#define MMUSUFFIX _mmu
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#define URETSUFFIX USUFFIX
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#define SRETSUFFIX glue(s, SUFFIX)
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#endif
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/* generic load/store macros */
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static inline RES_TYPE
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glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
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target_ulong ptr,
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uintptr_t retaddr)
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{
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int page_index;
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RES_TYPE res;
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target_ulong addr;
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int mmu_idx;
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TCGMemOpIdx oi;
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#if !defined(SOFTMMU_CODE_ACCESS)
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trace_guest_mem_before_exec(
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ENV_GET_CPU(env), ptr,
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trace_mem_build_info(SHIFT, false, MO_TE, false));
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#endif
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addr = ptr;
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page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
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mmu_idx = CPU_MMU_INDEX;
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if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
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(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
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oi = make_memop_idx(SHIFT, mmu_idx);
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res = glue(glue(helper_ret_ld, URETSUFFIX), MMUSUFFIX)(env, addr,
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oi, retaddr);
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} else {
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uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
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res = glue(glue(ld, USUFFIX), _p)((uint8_t *)hostaddr);
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}
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return res;
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}
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static inline RES_TYPE
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glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
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{
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return glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(env, ptr, 0);
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}
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#if DATA_SIZE <= 2
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static inline int
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glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
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target_ulong ptr,
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uintptr_t retaddr)
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{
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int res, page_index;
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target_ulong addr;
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int mmu_idx;
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TCGMemOpIdx oi;
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#if !defined(SOFTMMU_CODE_ACCESS)
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trace_guest_mem_before_exec(
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ENV_GET_CPU(env), ptr,
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trace_mem_build_info(SHIFT, true, MO_TE, false));
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#endif
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addr = ptr;
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page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
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mmu_idx = CPU_MMU_INDEX;
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if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
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(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
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oi = make_memop_idx(SHIFT, mmu_idx);
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res = (DATA_STYPE)glue(glue(helper_ret_ld, SRETSUFFIX),
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MMUSUFFIX)(env, addr, oi, retaddr);
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} else {
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uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
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res = glue(glue(lds, SUFFIX), _p)((uint8_t *)hostaddr);
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}
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return res;
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}
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static inline int
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glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
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{
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return glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(env, ptr, 0);
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}
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#endif
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#ifndef SOFTMMU_CODE_ACCESS
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/* generic store macro */
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static inline void
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glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
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target_ulong ptr,
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RES_TYPE v, uintptr_t retaddr)
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{
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int page_index;
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target_ulong addr;
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int mmu_idx;
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TCGMemOpIdx oi;
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#if !defined(SOFTMMU_CODE_ACCESS)
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trace_guest_mem_before_exec(
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ENV_GET_CPU(env), ptr,
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trace_mem_build_info(SHIFT, false, MO_TE, true));
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#endif
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addr = ptr;
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page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
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mmu_idx = CPU_MMU_INDEX;
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if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
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(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
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oi = make_memop_idx(SHIFT, mmu_idx);
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glue(glue(helper_ret_st, SUFFIX), MMUSUFFIX)(env, addr, v, oi,
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retaddr);
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} else {
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uintptr_t hostaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
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glue(glue(st, SUFFIX), _p)((uint8_t *)hostaddr, v);
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}
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}
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static inline void
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glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
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RES_TYPE v)
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{
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glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(env, ptr, v, 0);
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}
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#endif /* !SOFTMMU_CODE_ACCESS */
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#undef RES_TYPE
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#undef DATA_TYPE
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#undef DATA_STYPE
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#undef SUFFIX
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#undef USUFFIX
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#undef DATA_SIZE
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#undef MMUSUFFIX
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#undef ADDR_READ
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#undef URETSUFFIX
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#undef SRETSUFFIX
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#undef SHIFT
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