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f08b6170 PB |
1 | /* |
2 | * Software MMU support | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * This library is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU Lesser General Public | |
15 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
16 | * | |
17 | */ | |
18 | ||
19 | /* | |
20 | * Generate inline load/store functions for all MMU modes (typically | |
21 | * at least _user and _kernel) as well as _data versions, for all data | |
22 | * sizes. | |
23 | * | |
24 | * Used by target op helpers. | |
25 | * | |
db5fd8d7 PM |
26 | * The syntax for the accessors is: |
27 | * | |
28 | * load: cpu_ld{sign}{size}_{mmusuffix}(env, ptr) | |
29 | * | |
30 | * store: cpu_st{sign}{size}_{mmusuffix}(env, ptr, val) | |
31 | * | |
32 | * sign is: | |
33 | * (empty): for 32 and 64 bit sizes | |
34 | * u : unsigned | |
35 | * s : signed | |
36 | * | |
37 | * size is: | |
38 | * b: 8 bits | |
39 | * w: 16 bits | |
40 | * l: 32 bits | |
41 | * q: 64 bits | |
42 | * | |
43 | * mmusuffix is one of the generic suffixes "data" or "code", or | |
44 | * (for softmmu configs) a target-specific MMU mode suffix as defined | |
45 | * in target cpu.h. | |
f08b6170 PB |
46 | */ |
47 | #ifndef CPU_LDST_H | |
48 | #define CPU_LDST_H | |
49 | ||
c773828a PB |
50 | #if defined(CONFIG_USER_ONLY) |
51 | /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ | |
b76f21a7 | 52 | #define g2h(x) ((void *)((unsigned long)(target_ulong)(x) + guest_base)) |
c773828a PB |
53 | |
54 | #if HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS | |
55 | #define h2g_valid(x) 1 | |
56 | #else | |
57 | #define h2g_valid(x) ({ \ | |
b76f21a7 | 58 | unsigned long __guest = (unsigned long)(x) - guest_base; \ |
c773828a | 59 | (__guest < (1ul << TARGET_VIRT_ADDR_SPACE_BITS)) && \ |
b76f21a7 | 60 | (!reserved_va || (__guest < reserved_va)); \ |
c773828a PB |
61 | }) |
62 | #endif | |
63 | ||
64 | #define h2g_nocheck(x) ({ \ | |
b76f21a7 | 65 | unsigned long __ret = (unsigned long)(x) - guest_base; \ |
c773828a PB |
66 | (abi_ulong)__ret; \ |
67 | }) | |
68 | ||
69 | #define h2g(x) ({ \ | |
70 | /* Check if given address fits target address space */ \ | |
71 | assert(h2g_valid(x)); \ | |
72 | h2g_nocheck(x); \ | |
73 | }) | |
74 | ||
f08b6170 PB |
75 | #endif |
76 | ||
c773828a PB |
77 | #if defined(CONFIG_USER_ONLY) |
78 | ||
9220fe54 PM |
79 | /* In user-only mode we provide only the _code and _data accessors. */ |
80 | ||
81 | #define MEMSUFFIX _data | |
82 | #define DATA_SIZE 1 | |
83 | #include "exec/cpu_ldst_useronly_template.h" | |
84 | ||
85 | #define DATA_SIZE 2 | |
86 | #include "exec/cpu_ldst_useronly_template.h" | |
87 | ||
88 | #define DATA_SIZE 4 | |
89 | #include "exec/cpu_ldst_useronly_template.h" | |
90 | ||
91 | #define DATA_SIZE 8 | |
92 | #include "exec/cpu_ldst_useronly_template.h" | |
93 | #undef MEMSUFFIX | |
94 | ||
95 | #define MEMSUFFIX _code | |
96 | #define CODE_ACCESS | |
97 | #define DATA_SIZE 1 | |
98 | #include "exec/cpu_ldst_useronly_template.h" | |
99 | ||
100 | #define DATA_SIZE 2 | |
101 | #include "exec/cpu_ldst_useronly_template.h" | |
102 | ||
103 | #define DATA_SIZE 4 | |
104 | #include "exec/cpu_ldst_useronly_template.h" | |
105 | ||
106 | #define DATA_SIZE 8 | |
107 | #include "exec/cpu_ldst_useronly_template.h" | |
108 | #undef MEMSUFFIX | |
109 | #undef CODE_ACCESS | |
c773828a PB |
110 | |
111 | #else | |
112 | ||
c773828a PB |
113 | /* The memory helpers for tcg-generated code need tcg_target_long etc. */ |
114 | #include "tcg.h" | |
115 | ||
116 | uint8_t helper_ldb_mmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
117 | uint16_t helper_ldw_mmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
118 | uint32_t helper_ldl_mmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
119 | uint64_t helper_ldq_mmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
120 | ||
121 | void helper_stb_mmu(CPUArchState *env, target_ulong addr, | |
122 | uint8_t val, int mmu_idx); | |
123 | void helper_stw_mmu(CPUArchState *env, target_ulong addr, | |
124 | uint16_t val, int mmu_idx); | |
125 | void helper_stl_mmu(CPUArchState *env, target_ulong addr, | |
126 | uint32_t val, int mmu_idx); | |
127 | void helper_stq_mmu(CPUArchState *env, target_ulong addr, | |
128 | uint64_t val, int mmu_idx); | |
129 | ||
130 | uint8_t helper_ldb_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
131 | uint16_t helper_ldw_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
132 | uint32_t helper_ldl_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
133 | uint64_t helper_ldq_cmmu(CPUArchState *env, target_ulong addr, int mmu_idx); | |
134 | ||
de5ee4a8 | 135 | #ifdef MMU_MODE0_SUFFIX |
c773828a PB |
136 | #define CPU_MMU_INDEX 0 |
137 | #define MEMSUFFIX MMU_MODE0_SUFFIX | |
138 | #define DATA_SIZE 1 | |
139 | #include "exec/cpu_ldst_template.h" | |
140 | ||
141 | #define DATA_SIZE 2 | |
142 | #include "exec/cpu_ldst_template.h" | |
143 | ||
144 | #define DATA_SIZE 4 | |
145 | #include "exec/cpu_ldst_template.h" | |
146 | ||
147 | #define DATA_SIZE 8 | |
148 | #include "exec/cpu_ldst_template.h" | |
149 | #undef CPU_MMU_INDEX | |
150 | #undef MEMSUFFIX | |
de5ee4a8 | 151 | #endif |
c773828a | 152 | |
de5ee4a8 | 153 | #if (NB_MMU_MODES >= 2) && defined(MMU_MODE1_SUFFIX) |
c773828a PB |
154 | #define CPU_MMU_INDEX 1 |
155 | #define MEMSUFFIX MMU_MODE1_SUFFIX | |
156 | #define DATA_SIZE 1 | |
157 | #include "exec/cpu_ldst_template.h" | |
158 | ||
159 | #define DATA_SIZE 2 | |
160 | #include "exec/cpu_ldst_template.h" | |
161 | ||
162 | #define DATA_SIZE 4 | |
163 | #include "exec/cpu_ldst_template.h" | |
164 | ||
165 | #define DATA_SIZE 8 | |
166 | #include "exec/cpu_ldst_template.h" | |
167 | #undef CPU_MMU_INDEX | |
168 | #undef MEMSUFFIX | |
de5ee4a8 | 169 | #endif |
c773828a | 170 | |
de5ee4a8 | 171 | #if (NB_MMU_MODES >= 3) && defined(MMU_MODE2_SUFFIX) |
c773828a PB |
172 | |
173 | #define CPU_MMU_INDEX 2 | |
174 | #define MEMSUFFIX MMU_MODE2_SUFFIX | |
175 | #define DATA_SIZE 1 | |
176 | #include "exec/cpu_ldst_template.h" | |
177 | ||
178 | #define DATA_SIZE 2 | |
179 | #include "exec/cpu_ldst_template.h" | |
180 | ||
181 | #define DATA_SIZE 4 | |
182 | #include "exec/cpu_ldst_template.h" | |
183 | ||
184 | #define DATA_SIZE 8 | |
185 | #include "exec/cpu_ldst_template.h" | |
186 | #undef CPU_MMU_INDEX | |
187 | #undef MEMSUFFIX | |
188 | #endif /* (NB_MMU_MODES >= 3) */ | |
189 | ||
de5ee4a8 | 190 | #if (NB_MMU_MODES >= 4) && defined(MMU_MODE3_SUFFIX) |
c773828a PB |
191 | |
192 | #define CPU_MMU_INDEX 3 | |
193 | #define MEMSUFFIX MMU_MODE3_SUFFIX | |
194 | #define DATA_SIZE 1 | |
195 | #include "exec/cpu_ldst_template.h" | |
196 | ||
197 | #define DATA_SIZE 2 | |
198 | #include "exec/cpu_ldst_template.h" | |
199 | ||
200 | #define DATA_SIZE 4 | |
201 | #include "exec/cpu_ldst_template.h" | |
202 | ||
203 | #define DATA_SIZE 8 | |
204 | #include "exec/cpu_ldst_template.h" | |
205 | #undef CPU_MMU_INDEX | |
206 | #undef MEMSUFFIX | |
207 | #endif /* (NB_MMU_MODES >= 4) */ | |
208 | ||
de5ee4a8 | 209 | #if (NB_MMU_MODES >= 5) && defined(MMU_MODE4_SUFFIX) |
c773828a PB |
210 | |
211 | #define CPU_MMU_INDEX 4 | |
212 | #define MEMSUFFIX MMU_MODE4_SUFFIX | |
213 | #define DATA_SIZE 1 | |
214 | #include "exec/cpu_ldst_template.h" | |
215 | ||
216 | #define DATA_SIZE 2 | |
217 | #include "exec/cpu_ldst_template.h" | |
218 | ||
219 | #define DATA_SIZE 4 | |
220 | #include "exec/cpu_ldst_template.h" | |
221 | ||
222 | #define DATA_SIZE 8 | |
223 | #include "exec/cpu_ldst_template.h" | |
224 | #undef CPU_MMU_INDEX | |
225 | #undef MEMSUFFIX | |
226 | #endif /* (NB_MMU_MODES >= 5) */ | |
227 | ||
de5ee4a8 | 228 | #if (NB_MMU_MODES >= 6) && defined(MMU_MODE5_SUFFIX) |
c773828a PB |
229 | |
230 | #define CPU_MMU_INDEX 5 | |
231 | #define MEMSUFFIX MMU_MODE5_SUFFIX | |
232 | #define DATA_SIZE 1 | |
233 | #include "exec/cpu_ldst_template.h" | |
234 | ||
235 | #define DATA_SIZE 2 | |
236 | #include "exec/cpu_ldst_template.h" | |
237 | ||
238 | #define DATA_SIZE 4 | |
239 | #include "exec/cpu_ldst_template.h" | |
240 | ||
241 | #define DATA_SIZE 8 | |
242 | #include "exec/cpu_ldst_template.h" | |
243 | #undef CPU_MMU_INDEX | |
244 | #undef MEMSUFFIX | |
245 | #endif /* (NB_MMU_MODES >= 6) */ | |
246 | ||
8f3ae2ae PM |
247 | #if (NB_MMU_MODES >= 7) && defined(MMU_MODE6_SUFFIX) |
248 | ||
249 | #define CPU_MMU_INDEX 6 | |
250 | #define MEMSUFFIX MMU_MODE6_SUFFIX | |
251 | #define DATA_SIZE 1 | |
252 | #include "exec/cpu_ldst_template.h" | |
253 | ||
254 | #define DATA_SIZE 2 | |
255 | #include "exec/cpu_ldst_template.h" | |
256 | ||
257 | #define DATA_SIZE 4 | |
258 | #include "exec/cpu_ldst_template.h" | |
259 | ||
260 | #define DATA_SIZE 8 | |
261 | #include "exec/cpu_ldst_template.h" | |
262 | #undef CPU_MMU_INDEX | |
263 | #undef MEMSUFFIX | |
264 | #endif /* (NB_MMU_MODES >= 7) */ | |
265 | ||
1de29aef PB |
266 | #if (NB_MMU_MODES >= 8) && defined(MMU_MODE7_SUFFIX) |
267 | ||
268 | #define CPU_MMU_INDEX 7 | |
269 | #define MEMSUFFIX MMU_MODE7_SUFFIX | |
270 | #define DATA_SIZE 1 | |
271 | #include "exec/cpu_ldst_template.h" | |
272 | ||
273 | #define DATA_SIZE 2 | |
274 | #include "exec/cpu_ldst_template.h" | |
275 | ||
276 | #define DATA_SIZE 4 | |
277 | #include "exec/cpu_ldst_template.h" | |
278 | ||
279 | #define DATA_SIZE 8 | |
280 | #include "exec/cpu_ldst_template.h" | |
281 | #undef CPU_MMU_INDEX | |
282 | #undef MEMSUFFIX | |
283 | #endif /* (NB_MMU_MODES >= 8) */ | |
284 | ||
285 | #if (NB_MMU_MODES >= 9) && defined(MMU_MODE8_SUFFIX) | |
286 | ||
287 | #define CPU_MMU_INDEX 8 | |
288 | #define MEMSUFFIX MMU_MODE8_SUFFIX | |
289 | #define DATA_SIZE 1 | |
290 | #include "exec/cpu_ldst_template.h" | |
291 | ||
292 | #define DATA_SIZE 2 | |
293 | #include "exec/cpu_ldst_template.h" | |
294 | ||
295 | #define DATA_SIZE 4 | |
296 | #include "exec/cpu_ldst_template.h" | |
297 | ||
298 | #define DATA_SIZE 8 | |
299 | #include "exec/cpu_ldst_template.h" | |
300 | #undef CPU_MMU_INDEX | |
301 | #undef MEMSUFFIX | |
302 | #endif /* (NB_MMU_MODES >= 9) */ | |
303 | ||
304 | #if (NB_MMU_MODES >= 10) && defined(MMU_MODE9_SUFFIX) | |
305 | ||
306 | #define CPU_MMU_INDEX 9 | |
307 | #define MEMSUFFIX MMU_MODE9_SUFFIX | |
308 | #define DATA_SIZE 1 | |
309 | #include "exec/cpu_ldst_template.h" | |
310 | ||
311 | #define DATA_SIZE 2 | |
312 | #include "exec/cpu_ldst_template.h" | |
313 | ||
314 | #define DATA_SIZE 4 | |
315 | #include "exec/cpu_ldst_template.h" | |
316 | ||
317 | #define DATA_SIZE 8 | |
318 | #include "exec/cpu_ldst_template.h" | |
319 | #undef CPU_MMU_INDEX | |
320 | #undef MEMSUFFIX | |
321 | #endif /* (NB_MMU_MODES >= 10) */ | |
322 | ||
323 | #if (NB_MMU_MODES >= 11) && defined(MMU_MODE10_SUFFIX) | |
324 | ||
325 | #define CPU_MMU_INDEX 10 | |
326 | #define MEMSUFFIX MMU_MODE10_SUFFIX | |
327 | #define DATA_SIZE 1 | |
328 | #include "exec/cpu_ldst_template.h" | |
329 | ||
330 | #define DATA_SIZE 2 | |
331 | #include "exec/cpu_ldst_template.h" | |
332 | ||
333 | #define DATA_SIZE 4 | |
334 | #include "exec/cpu_ldst_template.h" | |
335 | ||
336 | #define DATA_SIZE 8 | |
337 | #include "exec/cpu_ldst_template.h" | |
338 | #undef CPU_MMU_INDEX | |
339 | #undef MEMSUFFIX | |
340 | #endif /* (NB_MMU_MODES >= 11) */ | |
341 | ||
342 | #if (NB_MMU_MODES >= 12) && defined(MMU_MODE11_SUFFIX) | |
343 | ||
344 | #define CPU_MMU_INDEX 11 | |
345 | #define MEMSUFFIX MMU_MODE11_SUFFIX | |
346 | #define DATA_SIZE 1 | |
347 | #include "exec/cpu_ldst_template.h" | |
348 | ||
349 | #define DATA_SIZE 2 | |
350 | #include "exec/cpu_ldst_template.h" | |
351 | ||
352 | #define DATA_SIZE 4 | |
353 | #include "exec/cpu_ldst_template.h" | |
354 | ||
355 | #define DATA_SIZE 8 | |
356 | #include "exec/cpu_ldst_template.h" | |
357 | #undef CPU_MMU_INDEX | |
358 | #undef MEMSUFFIX | |
359 | #endif /* (NB_MMU_MODES >= 12) */ | |
360 | ||
361 | #if (NB_MMU_MODES > 12) | |
362 | #error "NB_MMU_MODES > 12 is not supported for now" | |
363 | #endif /* (NB_MMU_MODES > 12) */ | |
c773828a PB |
364 | |
365 | /* these access are slower, they must be as rare as possible */ | |
97ed5ccd | 366 | #define CPU_MMU_INDEX (cpu_mmu_index(env, false)) |
c773828a PB |
367 | #define MEMSUFFIX _data |
368 | #define DATA_SIZE 1 | |
369 | #include "exec/cpu_ldst_template.h" | |
370 | ||
371 | #define DATA_SIZE 2 | |
372 | #include "exec/cpu_ldst_template.h" | |
373 | ||
374 | #define DATA_SIZE 4 | |
375 | #include "exec/cpu_ldst_template.h" | |
376 | ||
377 | #define DATA_SIZE 8 | |
378 | #include "exec/cpu_ldst_template.h" | |
379 | #undef CPU_MMU_INDEX | |
380 | #undef MEMSUFFIX | |
381 | ||
97ed5ccd | 382 | #define CPU_MMU_INDEX (cpu_mmu_index(env, true)) |
c773828a PB |
383 | #define MEMSUFFIX _code |
384 | #define SOFTMMU_CODE_ACCESS | |
385 | ||
386 | #define DATA_SIZE 1 | |
387 | #include "exec/cpu_ldst_template.h" | |
388 | ||
389 | #define DATA_SIZE 2 | |
390 | #include "exec/cpu_ldst_template.h" | |
391 | ||
392 | #define DATA_SIZE 4 | |
393 | #include "exec/cpu_ldst_template.h" | |
394 | ||
395 | #define DATA_SIZE 8 | |
396 | #include "exec/cpu_ldst_template.h" | |
397 | ||
398 | #undef CPU_MMU_INDEX | |
399 | #undef MEMSUFFIX | |
400 | #undef SOFTMMU_CODE_ACCESS | |
401 | ||
2e83c496 AJ |
402 | #endif /* defined(CONFIG_USER_ONLY) */ |
403 | ||
c773828a PB |
404 | /** |
405 | * tlb_vaddr_to_host: | |
406 | * @env: CPUArchState | |
407 | * @addr: guest virtual address to look up | |
408 | * @access_type: 0 for read, 1 for write, 2 for execute | |
409 | * @mmu_idx: MMU index to use for lookup | |
410 | * | |
411 | * Look up the specified guest virtual index in the TCG softmmu TLB. | |
412 | * If the TLB contains a host virtual address suitable for direct RAM | |
413 | * access, then return it. Otherwise (TLB miss, TLB entry is for an | |
414 | * I/O access, etc) return NULL. | |
415 | * | |
416 | * This is the equivalent of the initial fast-path code used by | |
417 | * TCG backends for guest load and store accesses. | |
418 | */ | |
419 | static inline void *tlb_vaddr_to_host(CPUArchState *env, target_ulong addr, | |
420 | int access_type, int mmu_idx) | |
421 | { | |
2e83c496 AJ |
422 | #if defined(CONFIG_USER_ONLY) |
423 | return g2h(vaddr); | |
424 | #else | |
c773828a PB |
425 | int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
426 | CPUTLBEntry *tlbentry = &env->tlb_table[mmu_idx][index]; | |
427 | target_ulong tlb_addr; | |
428 | uintptr_t haddr; | |
429 | ||
430 | switch (access_type) { | |
431 | case 0: | |
432 | tlb_addr = tlbentry->addr_read; | |
433 | break; | |
434 | case 1: | |
435 | tlb_addr = tlbentry->addr_write; | |
436 | break; | |
437 | case 2: | |
438 | tlb_addr = tlbentry->addr_code; | |
439 | break; | |
440 | default: | |
441 | g_assert_not_reached(); | |
442 | } | |
443 | ||
444 | if ((addr & TARGET_PAGE_MASK) | |
445 | != (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { | |
446 | /* TLB entry is for a different page */ | |
447 | return NULL; | |
448 | } | |
449 | ||
450 | if (tlb_addr & ~TARGET_PAGE_MASK) { | |
451 | /* IO access */ | |
452 | return NULL; | |
453 | } | |
454 | ||
455 | haddr = addr + env->tlb_table[mmu_idx][index].addend; | |
456 | return (void *)haddr; | |
c773828a | 457 | #endif /* defined(CONFIG_USER_ONLY) */ |
2e83c496 | 458 | } |
c773828a | 459 | |
f08b6170 | 460 | #endif /* CPU_LDST_H */ |