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b92e5a22 FB |
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, 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 | ||
61382a50 FB |
42 | #if ACCESS_TYPE == 0 |
43 | ||
44 | #define CPU_MEM_INDEX 0 | |
45 | #define MMUSUFFIX _mmu | |
46 | ||
47 | #elif ACCESS_TYPE == 1 | |
48 | ||
49 | #define CPU_MEM_INDEX 1 | |
50 | #define MMUSUFFIX _mmu | |
51 | ||
52 | #elif ACCESS_TYPE == 2 | |
53 | ||
2d603d22 | 54 | #ifdef TARGET_I386 |
61382a50 | 55 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3) |
2d603d22 FB |
56 | #elif defined (TARGET_PPC) |
57 | #define CPU_MEM_INDEX (msr_pr) | |
6af0bf9c FB |
58 | #elif defined (TARGET_MIPS) |
59 | #define CPU_MEM_INDEX ((env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM) | |
e95c8d51 FB |
60 | #elif defined (TARGET_SPARC) |
61 | #define CPU_MEM_INDEX ((env->psrs) == 0) | |
b5ff1b31 FB |
62 | #elif defined (TARGET_ARM) |
63 | #define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) | |
64 | #else | |
65 | #error unsupported CPU | |
2d603d22 | 66 | #endif |
61382a50 FB |
67 | #define MMUSUFFIX _mmu |
68 | ||
69 | #elif ACCESS_TYPE == 3 | |
70 | ||
2d603d22 | 71 | #ifdef TARGET_I386 |
61382a50 | 72 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3) |
2d603d22 FB |
73 | #elif defined (TARGET_PPC) |
74 | #define CPU_MEM_INDEX (msr_pr) | |
6af0bf9c FB |
75 | #elif defined (TARGET_MIPS) |
76 | #define CPU_MEM_INDEX ((env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM) | |
e95c8d51 FB |
77 | #elif defined (TARGET_SPARC) |
78 | #define CPU_MEM_INDEX ((env->psrs) == 0) | |
b5ff1b31 FB |
79 | #elif defined (TARGET_ARM) |
80 | #define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR) | |
81 | #else | |
82 | #error unsupported CPU | |
2d603d22 | 83 | #endif |
61382a50 FB |
84 | #define MMUSUFFIX _cmmu |
85 | ||
b92e5a22 | 86 | #else |
61382a50 | 87 | #error invalid ACCESS_TYPE |
b92e5a22 FB |
88 | #endif |
89 | ||
90 | #if DATA_SIZE == 8 | |
91 | #define RES_TYPE uint64_t | |
92 | #else | |
93 | #define RES_TYPE int | |
94 | #endif | |
95 | ||
84b7b8e7 FB |
96 | #if ACCESS_TYPE == 3 |
97 | #define ADDR_READ addr_code | |
98 | #else | |
99 | #define ADDR_READ addr_read | |
100 | #endif | |
b92e5a22 | 101 | |
c27004ec | 102 | DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr, |
61382a50 | 103 | int is_user); |
c27004ec | 104 | void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr, DATA_TYPE v, int is_user); |
b92e5a22 | 105 | |
c27004ec FB |
106 | #if (DATA_SIZE <= 4) && (TARGET_LONG_BITS == 32) && defined(__i386__) && \ |
107 | (ACCESS_TYPE <= 1) && defined(ASM_SOFTMMU) | |
e16c53fa | 108 | |
84b7b8e7 FB |
109 | #define CPU_TLB_ENTRY_BITS 4 |
110 | ||
c27004ec | 111 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr) |
e16c53fa FB |
112 | { |
113 | int res; | |
114 | ||
115 | asm volatile ("movl %1, %%edx\n" | |
116 | "movl %1, %%eax\n" | |
117 | "shrl %3, %%edx\n" | |
118 | "andl %4, %%eax\n" | |
119 | "andl %2, %%edx\n" | |
120 | "leal %5(%%edx, %%ebp), %%edx\n" | |
121 | "cmpl (%%edx), %%eax\n" | |
122 | "movl %1, %%eax\n" | |
123 | "je 1f\n" | |
124 | "pushl %6\n" | |
125 | "call %7\n" | |
126 | "popl %%edx\n" | |
127 | "movl %%eax, %0\n" | |
128 | "jmp 2f\n" | |
129 | "1:\n" | |
84b7b8e7 | 130 | "addl 12(%%edx), %%eax\n" |
e16c53fa FB |
131 | #if DATA_SIZE == 1 |
132 | "movzbl (%%eax), %0\n" | |
133 | #elif DATA_SIZE == 2 | |
134 | "movzwl (%%eax), %0\n" | |
135 | #elif DATA_SIZE == 4 | |
136 | "movl (%%eax), %0\n" | |
137 | #else | |
138 | #error unsupported size | |
139 | #endif | |
140 | "2:\n" | |
141 | : "=r" (res) | |
142 | : "r" (ptr), | |
84b7b8e7 FB |
143 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS), |
144 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), | |
e16c53fa | 145 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
84b7b8e7 | 146 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_read)), |
e16c53fa FB |
147 | "i" (CPU_MEM_INDEX), |
148 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX)) | |
149 | : "%eax", "%ecx", "%edx", "memory", "cc"); | |
150 | return res; | |
151 | } | |
152 | ||
153 | #if DATA_SIZE <= 2 | |
c27004ec | 154 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr) |
e16c53fa FB |
155 | { |
156 | int res; | |
157 | ||
158 | asm volatile ("movl %1, %%edx\n" | |
159 | "movl %1, %%eax\n" | |
160 | "shrl %3, %%edx\n" | |
161 | "andl %4, %%eax\n" | |
162 | "andl %2, %%edx\n" | |
163 | "leal %5(%%edx, %%ebp), %%edx\n" | |
164 | "cmpl (%%edx), %%eax\n" | |
165 | "movl %1, %%eax\n" | |
166 | "je 1f\n" | |
167 | "pushl %6\n" | |
168 | "call %7\n" | |
169 | "popl %%edx\n" | |
170 | #if DATA_SIZE == 1 | |
171 | "movsbl %%al, %0\n" | |
172 | #elif DATA_SIZE == 2 | |
173 | "movswl %%ax, %0\n" | |
174 | #else | |
175 | #error unsupported size | |
176 | #endif | |
177 | "jmp 2f\n" | |
178 | "1:\n" | |
84b7b8e7 | 179 | "addl 12(%%edx), %%eax\n" |
e16c53fa FB |
180 | #if DATA_SIZE == 1 |
181 | "movsbl (%%eax), %0\n" | |
182 | #elif DATA_SIZE == 2 | |
183 | "movswl (%%eax), %0\n" | |
184 | #else | |
185 | #error unsupported size | |
186 | #endif | |
187 | "2:\n" | |
188 | : "=r" (res) | |
189 | : "r" (ptr), | |
84b7b8e7 FB |
190 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS), |
191 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), | |
e16c53fa | 192 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
84b7b8e7 | 193 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_read)), |
e16c53fa FB |
194 | "i" (CPU_MEM_INDEX), |
195 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX)) | |
196 | : "%eax", "%ecx", "%edx", "memory", "cc"); | |
197 | return res; | |
198 | } | |
199 | #endif | |
200 | ||
c27004ec | 201 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v) |
e16c53fa FB |
202 | { |
203 | asm volatile ("movl %0, %%edx\n" | |
204 | "movl %0, %%eax\n" | |
205 | "shrl %3, %%edx\n" | |
206 | "andl %4, %%eax\n" | |
207 | "andl %2, %%edx\n" | |
208 | "leal %5(%%edx, %%ebp), %%edx\n" | |
209 | "cmpl (%%edx), %%eax\n" | |
210 | "movl %0, %%eax\n" | |
211 | "je 1f\n" | |
212 | #if DATA_SIZE == 1 | |
213 | "movzbl %b1, %%edx\n" | |
214 | #elif DATA_SIZE == 2 | |
215 | "movzwl %w1, %%edx\n" | |
216 | #elif DATA_SIZE == 4 | |
217 | "movl %1, %%edx\n" | |
218 | #else | |
219 | #error unsupported size | |
220 | #endif | |
221 | "pushl %6\n" | |
222 | "call %7\n" | |
223 | "popl %%eax\n" | |
224 | "jmp 2f\n" | |
225 | "1:\n" | |
84b7b8e7 | 226 | "addl 8(%%edx), %%eax\n" |
e16c53fa FB |
227 | #if DATA_SIZE == 1 |
228 | "movb %b1, (%%eax)\n" | |
229 | #elif DATA_SIZE == 2 | |
230 | "movw %w1, (%%eax)\n" | |
231 | #elif DATA_SIZE == 4 | |
232 | "movl %1, (%%eax)\n" | |
233 | #else | |
234 | #error unsupported size | |
235 | #endif | |
236 | "2:\n" | |
237 | : | |
238 | : "r" (ptr), | |
239 | /* NOTE: 'q' would be needed as constraint, but we could not use it | |
240 | with T1 ! */ | |
241 | "r" (v), | |
84b7b8e7 FB |
242 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS), |
243 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS), | |
e16c53fa | 244 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
84b7b8e7 | 245 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_write)), |
e16c53fa FB |
246 | "i" (CPU_MEM_INDEX), |
247 | "m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX)) | |
248 | : "%eax", "%ecx", "%edx", "memory", "cc"); | |
249 | } | |
250 | ||
251 | #else | |
252 | ||
253 | /* generic load/store macros */ | |
254 | ||
c27004ec | 255 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr) |
b92e5a22 FB |
256 | { |
257 | int index; | |
258 | RES_TYPE res; | |
c27004ec FB |
259 | target_ulong addr; |
260 | unsigned long physaddr; | |
61382a50 FB |
261 | int is_user; |
262 | ||
c27004ec | 263 | addr = ptr; |
b92e5a22 | 264 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
61382a50 | 265 | is_user = CPU_MEM_INDEX; |
84b7b8e7 | 266 | if (__builtin_expect(env->tlb_table[is_user][index].ADDR_READ != |
b92e5a22 | 267 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
61382a50 | 268 | res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user); |
b92e5a22 | 269 | } else { |
84b7b8e7 | 270 | physaddr = addr + env->tlb_table[is_user][index].addend; |
61382a50 | 271 | res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr); |
b92e5a22 FB |
272 | } |
273 | return res; | |
274 | } | |
275 | ||
276 | #if DATA_SIZE <= 2 | |
c27004ec | 277 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr) |
b92e5a22 FB |
278 | { |
279 | int res, index; | |
c27004ec FB |
280 | target_ulong addr; |
281 | unsigned long physaddr; | |
61382a50 FB |
282 | int is_user; |
283 | ||
c27004ec | 284 | addr = ptr; |
b92e5a22 | 285 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
61382a50 | 286 | is_user = CPU_MEM_INDEX; |
84b7b8e7 | 287 | if (__builtin_expect(env->tlb_table[is_user][index].ADDR_READ != |
b92e5a22 | 288 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
61382a50 | 289 | res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user); |
b92e5a22 | 290 | } else { |
84b7b8e7 | 291 | physaddr = addr + env->tlb_table[is_user][index].addend; |
b92e5a22 FB |
292 | res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr); |
293 | } | |
294 | return res; | |
295 | } | |
296 | #endif | |
297 | ||
84b7b8e7 FB |
298 | #if ACCESS_TYPE != 3 |
299 | ||
e16c53fa FB |
300 | /* generic store macro */ |
301 | ||
c27004ec | 302 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v) |
b92e5a22 FB |
303 | { |
304 | int index; | |
c27004ec FB |
305 | target_ulong addr; |
306 | unsigned long physaddr; | |
61382a50 FB |
307 | int is_user; |
308 | ||
c27004ec | 309 | addr = ptr; |
b92e5a22 | 310 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
61382a50 | 311 | is_user = CPU_MEM_INDEX; |
84b7b8e7 | 312 | if (__builtin_expect(env->tlb_table[is_user][index].addr_write != |
b92e5a22 | 313 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
61382a50 | 314 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user); |
b92e5a22 | 315 | } else { |
84b7b8e7 | 316 | physaddr = addr + env->tlb_table[is_user][index].addend; |
b92e5a22 FB |
317 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v); |
318 | } | |
319 | } | |
320 | ||
84b7b8e7 FB |
321 | #endif /* ACCESS_TYPE != 3 */ |
322 | ||
323 | #endif /* !asm */ | |
324 | ||
325 | #if ACCESS_TYPE != 3 | |
e16c53fa | 326 | |
2d603d22 | 327 | #if DATA_SIZE == 8 |
3f87bf69 | 328 | static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr) |
2d603d22 FB |
329 | { |
330 | union { | |
3f87bf69 | 331 | float64 d; |
2d603d22 FB |
332 | uint64_t i; |
333 | } u; | |
334 | u.i = glue(ldq, MEMSUFFIX)(ptr); | |
335 | return u.d; | |
336 | } | |
337 | ||
3f87bf69 | 338 | static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v) |
2d603d22 FB |
339 | { |
340 | union { | |
3f87bf69 | 341 | float64 d; |
2d603d22 FB |
342 | uint64_t i; |
343 | } u; | |
344 | u.d = v; | |
345 | glue(stq, MEMSUFFIX)(ptr, u.i); | |
346 | } | |
347 | #endif /* DATA_SIZE == 8 */ | |
348 | ||
349 | #if DATA_SIZE == 4 | |
3f87bf69 | 350 | static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr) |
2d603d22 FB |
351 | { |
352 | union { | |
3f87bf69 | 353 | float32 f; |
2d603d22 FB |
354 | uint32_t i; |
355 | } u; | |
356 | u.i = glue(ldl, MEMSUFFIX)(ptr); | |
357 | return u.f; | |
358 | } | |
359 | ||
3f87bf69 | 360 | static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v) |
2d603d22 FB |
361 | { |
362 | union { | |
3f87bf69 | 363 | float32 f; |
2d603d22 FB |
364 | uint32_t i; |
365 | } u; | |
366 | u.f = v; | |
367 | glue(stl, MEMSUFFIX)(ptr, u.i); | |
368 | } | |
369 | #endif /* DATA_SIZE == 4 */ | |
370 | ||
84b7b8e7 FB |
371 | #endif /* ACCESS_TYPE != 3 */ |
372 | ||
b92e5a22 FB |
373 | #undef RES_TYPE |
374 | #undef DATA_TYPE | |
375 | #undef DATA_STYPE | |
376 | #undef SUFFIX | |
61382a50 | 377 | #undef USUFFIX |
b92e5a22 | 378 | #undef DATA_SIZE |
61382a50 FB |
379 | #undef CPU_MEM_INDEX |
380 | #undef MMUSUFFIX | |
84b7b8e7 | 381 | #undef ADDR_READ |