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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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | #if DATA_SIZE == 8 | |
20 | #define SUFFIX q | |
21 | #define USUFFIX q | |
22 | #define DATA_TYPE uint64_t | |
23 | #elif DATA_SIZE == 4 | |
24 | #define SUFFIX l | |
25 | #define USUFFIX l | |
26 | #define DATA_TYPE uint32_t | |
27 | #elif DATA_SIZE == 2 | |
28 | #define SUFFIX w | |
29 | #define USUFFIX uw | |
30 | #define DATA_TYPE uint16_t | |
31 | #define DATA_STYPE int16_t | |
32 | #elif DATA_SIZE == 1 | |
33 | #define SUFFIX b | |
34 | #define USUFFIX ub | |
35 | #define DATA_TYPE uint8_t | |
36 | #define DATA_STYPE int8_t | |
37 | #else | |
38 | #error unsupported data size | |
39 | #endif | |
40 | ||
41 | #if ACCESS_TYPE < (NB_MMU_MODES) | |
42 | ||
43 | #define CPU_MMU_INDEX ACCESS_TYPE | |
44 | #define MMUSUFFIX _mmu | |
45 | ||
46 | #elif ACCESS_TYPE == (NB_MMU_MODES) | |
47 | ||
48 | #define CPU_MMU_INDEX (cpu_mmu_index(env)) | |
49 | #define MMUSUFFIX _mmu | |
50 | ||
51 | #elif ACCESS_TYPE == (NB_MMU_MODES + 1) | |
52 | ||
53 | #define CPU_MMU_INDEX (cpu_mmu_index(env)) | |
54 | #define MMUSUFFIX _cmmu | |
55 | ||
56 | #else | |
57 | #error invalid ACCESS_TYPE | |
58 | #endif | |
59 | ||
60 | #if DATA_SIZE == 8 | |
61 | #define RES_TYPE uint64_t | |
62 | #else | |
63 | #define RES_TYPE uint32_t | |
64 | #endif | |
65 | ||
66 | #if ACCESS_TYPE == (NB_MMU_MODES + 1) | |
67 | #define ADDR_READ addr_code | |
68 | #else | |
69 | #define ADDR_READ addr_read | |
70 | #endif | |
71 | ||
72 | /* generic load/store macros */ | |
73 | ||
74 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr) | |
75 | { | |
76 | int page_index; | |
77 | RES_TYPE res; | |
78 | target_ulong addr; | |
79 | unsigned long physaddr; | |
80 | int mmu_idx; | |
81 | ||
82 | addr = ptr; | |
83 | page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
84 | mmu_idx = CPU_MMU_INDEX; | |
85 | if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ != | |
86 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) { | |
87 | res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx); | |
88 | } else { | |
89 | physaddr = addr + env->tlb_table[mmu_idx][page_index].addend; | |
90 | res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr); | |
91 | } | |
92 | return res; | |
93 | } | |
94 | ||
95 | #if DATA_SIZE <= 2 | |
96 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr) | |
97 | { | |
98 | int res, page_index; | |
99 | target_ulong addr; | |
100 | unsigned long physaddr; | |
101 | int mmu_idx; | |
102 | ||
103 | addr = ptr; | |
104 | page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
105 | mmu_idx = CPU_MMU_INDEX; | |
106 | if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ != | |
107 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) { | |
108 | res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx); | |
109 | } else { | |
110 | physaddr = addr + env->tlb_table[mmu_idx][page_index].addend; | |
111 | res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr); | |
112 | } | |
113 | return res; | |
114 | } | |
115 | #endif | |
116 | ||
117 | #if ACCESS_TYPE != (NB_MMU_MODES + 1) | |
118 | ||
119 | /* generic store macro */ | |
120 | ||
121 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v) | |
122 | { | |
123 | int page_index; | |
124 | target_ulong addr; | |
125 | unsigned long physaddr; | |
126 | int mmu_idx; | |
127 | ||
128 | addr = ptr; | |
129 | page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
130 | mmu_idx = CPU_MMU_INDEX; | |
131 | if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write != | |
132 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) { | |
133 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, mmu_idx); | |
134 | } else { | |
135 | physaddr = addr + env->tlb_table[mmu_idx][page_index].addend; | |
136 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v); | |
137 | } | |
138 | } | |
139 | ||
140 | #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */ | |
141 | ||
142 | #if ACCESS_TYPE != (NB_MMU_MODES + 1) | |
143 | ||
144 | #if DATA_SIZE == 8 | |
145 | static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr) | |
146 | { | |
147 | union { | |
148 | float64 d; | |
149 | uint64_t i; | |
150 | } u; | |
151 | u.i = glue(ldq, MEMSUFFIX)(ptr); | |
152 | return u.d; | |
153 | } | |
154 | ||
155 | static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v) | |
156 | { | |
157 | union { | |
158 | float64 d; | |
159 | uint64_t i; | |
160 | } u; | |
161 | u.d = v; | |
162 | glue(stq, MEMSUFFIX)(ptr, u.i); | |
163 | } | |
164 | #endif /* DATA_SIZE == 8 */ | |
165 | ||
166 | #if DATA_SIZE == 4 | |
167 | static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr) | |
168 | { | |
169 | union { | |
170 | float32 f; | |
171 | uint32_t i; | |
172 | } u; | |
173 | u.i = glue(ldl, MEMSUFFIX)(ptr); | |
174 | return u.f; | |
175 | } | |
176 | ||
177 | static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v) | |
178 | { | |
179 | union { | |
180 | float32 f; | |
181 | uint32_t i; | |
182 | } u; | |
183 | u.f = v; | |
184 | glue(stl, MEMSUFFIX)(ptr, u.i); | |
185 | } | |
186 | #endif /* DATA_SIZE == 4 */ | |
187 | ||
188 | #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */ | |
189 | ||
190 | #undef RES_TYPE | |
191 | #undef DATA_TYPE | |
192 | #undef DATA_STYPE | |
193 | #undef SUFFIX | |
194 | #undef USUFFIX | |
195 | #undef DATA_SIZE | |
196 | #undef CPU_MMU_INDEX | |
197 | #undef MMUSUFFIX | |
198 | #undef ADDR_READ |