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b92e5a22 FB |
1 | /* |
2 | * Software MMU support | |
5fafdf24 | 3 | * |
b92e5a22 FB |
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, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | #if DATA_SIZE == 8 | |
21 | #define SUFFIX q | |
61382a50 | 22 | #define USUFFIX q |
b92e5a22 FB |
23 | #define DATA_TYPE uint64_t |
24 | #elif DATA_SIZE == 4 | |
25 | #define SUFFIX l | |
61382a50 | 26 | #define USUFFIX l |
b92e5a22 FB |
27 | #define DATA_TYPE uint32_t |
28 | #elif DATA_SIZE == 2 | |
29 | #define SUFFIX w | |
61382a50 | 30 | #define USUFFIX uw |
b92e5a22 FB |
31 | #define DATA_TYPE uint16_t |
32 | #define DATA_STYPE int16_t | |
33 | #elif DATA_SIZE == 1 | |
34 | #define SUFFIX b | |
61382a50 | 35 | #define USUFFIX ub |
b92e5a22 FB |
36 | #define DATA_TYPE uint8_t |
37 | #define DATA_STYPE int8_t | |
38 | #else | |
39 | #error unsupported data size | |
40 | #endif | |
41 | ||
6ebbf390 | 42 | #if ACCESS_TYPE < (NB_MMU_MODES) |
61382a50 | 43 | |
6ebbf390 | 44 | #define CPU_MMU_INDEX ACCESS_TYPE |
61382a50 FB |
45 | #define MMUSUFFIX _mmu |
46 | ||
6ebbf390 | 47 | #elif ACCESS_TYPE == (NB_MMU_MODES) |
61382a50 | 48 | |
6ebbf390 | 49 | #define CPU_MMU_INDEX (cpu_mmu_index(env)) |
61382a50 FB |
50 | #define MMUSUFFIX _mmu |
51 | ||
6ebbf390 | 52 | #elif ACCESS_TYPE == (NB_MMU_MODES + 1) |
61382a50 | 53 | |
6ebbf390 | 54 | #define CPU_MMU_INDEX (cpu_mmu_index(env)) |
61382a50 FB |
55 | #define MMUSUFFIX _cmmu |
56 | ||
b92e5a22 | 57 | #else |
61382a50 | 58 | #error invalid ACCESS_TYPE |
b92e5a22 FB |
59 | #endif |
60 | ||
61 | #if DATA_SIZE == 8 | |
62 | #define RES_TYPE uint64_t | |
63 | #else | |
64 | #define RES_TYPE int | |
65 | #endif | |
66 | ||
6ebbf390 | 67 | #if ACCESS_TYPE == (NB_MMU_MODES + 1) |
84b7b8e7 FB |
68 | #define ADDR_READ addr_code |
69 | #else | |
70 | #define ADDR_READ addr_read | |
71 | #endif | |
b92e5a22 | 72 | |
c27004ec | 73 | #if (DATA_SIZE <= 4) && (TARGET_LONG_BITS == 32) && defined(__i386__) && \ |
6ebbf390 | 74 | (ACCESS_TYPE < NB_MMU_MODES) && defined(ASM_SOFTMMU) |
e16c53fa | 75 | |
c27004ec | 76 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr) |
e16c53fa FB |
77 | { |
78 | int res; | |
79 | ||
80 | asm volatile ("movl %1, %%edx\n" | |
81 | "movl %1, %%eax\n" | |
82 | "shrl %3, %%edx\n" | |
83 | "andl %4, %%eax\n" | |
84 | "andl %2, %%edx\n" | |
85 | "leal %5(%%edx, %%ebp), %%edx\n" | |
86 | "cmpl (%%edx), %%eax\n" | |
87 | "movl %1, %%eax\n" | |
88 | "je 1f\n" | |
d656469f | 89 | "movl %6, %%edx\n" |
e16c53fa | 90 | "call %7\n" |
e16c53fa FB |
91 | "movl %%eax, %0\n" |
92 | "jmp 2f\n" | |
93 | "1:\n" | |
84b7b8e7 | 94 | "addl 12(%%edx), %%eax\n" |
e16c53fa FB |
95 | #if DATA_SIZE == 1 |
96 | "movzbl (%%eax), %0\n" | |
97 | #elif DATA_SIZE == 2 | |
98 | "movzwl (%%eax), %0\n" | |
99 | #elif DATA_SIZE == 4 | |
100 | "movl (%%eax), %0\n" | |
101 | #else | |
102 | #error unsupported size | |
103 | #endif | |
104 | "2:\n" | |
105 | : "=r" (res) | |
5fafdf24 TS |
106 | : "r" (ptr), |
107 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS), | |
108 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), | |
e16c53fa | 109 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
6ebbf390 JM |
110 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)), |
111 | "i" (CPU_MMU_INDEX), | |
e16c53fa FB |
112 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX)) |
113 | : "%eax", "%ecx", "%edx", "memory", "cc"); | |
114 | return res; | |
115 | } | |
116 | ||
117 | #if DATA_SIZE <= 2 | |
c27004ec | 118 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr) |
e16c53fa FB |
119 | { |
120 | int res; | |
121 | ||
122 | asm volatile ("movl %1, %%edx\n" | |
123 | "movl %1, %%eax\n" | |
124 | "shrl %3, %%edx\n" | |
125 | "andl %4, %%eax\n" | |
126 | "andl %2, %%edx\n" | |
127 | "leal %5(%%edx, %%ebp), %%edx\n" | |
128 | "cmpl (%%edx), %%eax\n" | |
129 | "movl %1, %%eax\n" | |
130 | "je 1f\n" | |
d656469f | 131 | "movl %6, %%edx\n" |
e16c53fa | 132 | "call %7\n" |
e16c53fa FB |
133 | #if DATA_SIZE == 1 |
134 | "movsbl %%al, %0\n" | |
135 | #elif DATA_SIZE == 2 | |
136 | "movswl %%ax, %0\n" | |
137 | #else | |
138 | #error unsupported size | |
139 | #endif | |
140 | "jmp 2f\n" | |
141 | "1:\n" | |
84b7b8e7 | 142 | "addl 12(%%edx), %%eax\n" |
e16c53fa FB |
143 | #if DATA_SIZE == 1 |
144 | "movsbl (%%eax), %0\n" | |
145 | #elif DATA_SIZE == 2 | |
146 | "movswl (%%eax), %0\n" | |
147 | #else | |
148 | #error unsupported size | |
149 | #endif | |
150 | "2:\n" | |
151 | : "=r" (res) | |
5fafdf24 TS |
152 | : "r" (ptr), |
153 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS), | |
154 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), | |
e16c53fa | 155 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
6ebbf390 JM |
156 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)), |
157 | "i" (CPU_MMU_INDEX), | |
e16c53fa FB |
158 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX)) |
159 | : "%eax", "%ecx", "%edx", "memory", "cc"); | |
160 | return res; | |
161 | } | |
162 | #endif | |
163 | ||
c27004ec | 164 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v) |
e16c53fa FB |
165 | { |
166 | asm volatile ("movl %0, %%edx\n" | |
167 | "movl %0, %%eax\n" | |
168 | "shrl %3, %%edx\n" | |
169 | "andl %4, %%eax\n" | |
170 | "andl %2, %%edx\n" | |
171 | "leal %5(%%edx, %%ebp), %%edx\n" | |
172 | "cmpl (%%edx), %%eax\n" | |
173 | "movl %0, %%eax\n" | |
174 | "je 1f\n" | |
175 | #if DATA_SIZE == 1 | |
176 | "movzbl %b1, %%edx\n" | |
177 | #elif DATA_SIZE == 2 | |
178 | "movzwl %w1, %%edx\n" | |
179 | #elif DATA_SIZE == 4 | |
180 | "movl %1, %%edx\n" | |
181 | #else | |
182 | #error unsupported size | |
183 | #endif | |
d656469f | 184 | "movl %6, %%ecx\n" |
e16c53fa | 185 | "call %7\n" |
e16c53fa FB |
186 | "jmp 2f\n" |
187 | "1:\n" | |
84b7b8e7 | 188 | "addl 8(%%edx), %%eax\n" |
e16c53fa FB |
189 | #if DATA_SIZE == 1 |
190 | "movb %b1, (%%eax)\n" | |
191 | #elif DATA_SIZE == 2 | |
192 | "movw %w1, (%%eax)\n" | |
193 | #elif DATA_SIZE == 4 | |
194 | "movl %1, (%%eax)\n" | |
195 | #else | |
196 | #error unsupported size | |
197 | #endif | |
198 | "2:\n" | |
5fafdf24 TS |
199 | : |
200 | : "r" (ptr), | |
f220f4e3 FB |
201 | #if DATA_SIZE == 1 |
202 | "q" (v), | |
203 | #else | |
5fafdf24 | 204 | "r" (v), |
f220f4e3 | 205 | #endif |
5fafdf24 TS |
206 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS), |
207 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), | |
e16c53fa | 208 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
6ebbf390 JM |
209 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_write)), |
210 | "i" (CPU_MMU_INDEX), | |
e16c53fa FB |
211 | "m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX)) |
212 | : "%eax", "%ecx", "%edx", "memory", "cc"); | |
213 | } | |
214 | ||
215 | #else | |
216 | ||
217 | /* generic load/store macros */ | |
218 | ||
c27004ec | 219 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr) |
b92e5a22 | 220 | { |
4d7a0880 | 221 | int page_index; |
b92e5a22 | 222 | RES_TYPE res; |
c27004ec FB |
223 | target_ulong addr; |
224 | unsigned long physaddr; | |
6ebbf390 | 225 | int mmu_idx; |
61382a50 | 226 | |
c27004ec | 227 | addr = ptr; |
4d7a0880 | 228 | page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
6ebbf390 | 229 | mmu_idx = CPU_MMU_INDEX; |
551bd27f TS |
230 | if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ != |
231 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) { | |
6ebbf390 | 232 | res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx); |
b92e5a22 | 233 | } else { |
4d7a0880 | 234 | physaddr = addr + env->tlb_table[mmu_idx][page_index].addend; |
61382a50 | 235 | res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr); |
b92e5a22 FB |
236 | } |
237 | return res; | |
238 | } | |
239 | ||
240 | #if DATA_SIZE <= 2 | |
c27004ec | 241 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr) |
b92e5a22 | 242 | { |
4d7a0880 | 243 | int res, page_index; |
c27004ec FB |
244 | target_ulong addr; |
245 | unsigned long physaddr; | |
6ebbf390 | 246 | int mmu_idx; |
61382a50 | 247 | |
c27004ec | 248 | addr = ptr; |
4d7a0880 | 249 | page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
6ebbf390 | 250 | mmu_idx = CPU_MMU_INDEX; |
551bd27f TS |
251 | if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ != |
252 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) { | |
6ebbf390 | 253 | res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx); |
b92e5a22 | 254 | } else { |
4d7a0880 | 255 | physaddr = addr + env->tlb_table[mmu_idx][page_index].addend; |
b92e5a22 FB |
256 | res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr); |
257 | } | |
258 | return res; | |
259 | } | |
260 | #endif | |
261 | ||
6ebbf390 | 262 | #if ACCESS_TYPE != (NB_MMU_MODES + 1) |
84b7b8e7 | 263 | |
e16c53fa FB |
264 | /* generic store macro */ |
265 | ||
c27004ec | 266 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v) |
b92e5a22 | 267 | { |
4d7a0880 | 268 | int page_index; |
c27004ec FB |
269 | target_ulong addr; |
270 | unsigned long physaddr; | |
6ebbf390 | 271 | int mmu_idx; |
61382a50 | 272 | |
c27004ec | 273 | addr = ptr; |
4d7a0880 | 274 | page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
6ebbf390 | 275 | mmu_idx = CPU_MMU_INDEX; |
551bd27f TS |
276 | if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write != |
277 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) { | |
6ebbf390 | 278 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, mmu_idx); |
b92e5a22 | 279 | } else { |
4d7a0880 | 280 | physaddr = addr + env->tlb_table[mmu_idx][page_index].addend; |
b92e5a22 FB |
281 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v); |
282 | } | |
283 | } | |
284 | ||
6ebbf390 | 285 | #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */ |
84b7b8e7 FB |
286 | |
287 | #endif /* !asm */ | |
288 | ||
6ebbf390 | 289 | #if ACCESS_TYPE != (NB_MMU_MODES + 1) |
e16c53fa | 290 | |
2d603d22 | 291 | #if DATA_SIZE == 8 |
3f87bf69 | 292 | static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr) |
2d603d22 FB |
293 | { |
294 | union { | |
3f87bf69 | 295 | float64 d; |
2d603d22 FB |
296 | uint64_t i; |
297 | } u; | |
298 | u.i = glue(ldq, MEMSUFFIX)(ptr); | |
299 | return u.d; | |
300 | } | |
301 | ||
3f87bf69 | 302 | static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v) |
2d603d22 FB |
303 | { |
304 | union { | |
3f87bf69 | 305 | float64 d; |
2d603d22 FB |
306 | uint64_t i; |
307 | } u; | |
308 | u.d = v; | |
309 | glue(stq, MEMSUFFIX)(ptr, u.i); | |
310 | } | |
311 | #endif /* DATA_SIZE == 8 */ | |
312 | ||
313 | #if DATA_SIZE == 4 | |
3f87bf69 | 314 | static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr) |
2d603d22 FB |
315 | { |
316 | union { | |
3f87bf69 | 317 | float32 f; |
2d603d22 FB |
318 | uint32_t i; |
319 | } u; | |
320 | u.i = glue(ldl, MEMSUFFIX)(ptr); | |
321 | return u.f; | |
322 | } | |
323 | ||
3f87bf69 | 324 | static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v) |
2d603d22 FB |
325 | { |
326 | union { | |
3f87bf69 | 327 | float32 f; |
2d603d22 FB |
328 | uint32_t i; |
329 | } u; | |
330 | u.f = v; | |
331 | glue(stl, MEMSUFFIX)(ptr, u.i); | |
332 | } | |
333 | #endif /* DATA_SIZE == 4 */ | |
334 | ||
6ebbf390 | 335 | #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */ |
84b7b8e7 | 336 | |
b92e5a22 FB |
337 | #undef RES_TYPE |
338 | #undef DATA_TYPE | |
339 | #undef DATA_STYPE | |
340 | #undef SUFFIX | |
61382a50 | 341 | #undef USUFFIX |
b92e5a22 | 342 | #undef DATA_SIZE |
6ebbf390 | 343 | #undef CPU_MMU_INDEX |
61382a50 | 344 | #undef MMUSUFFIX |
84b7b8e7 | 345 | #undef ADDR_READ |