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Commit | Line | Data |
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54936004 | 1 | /* |
fd6ce8f6 | 2 | * virtual page mapping and translated block handling |
54936004 FB |
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 | */ | |
67b915a5 | 20 | #include "config.h" |
54936004 FB |
21 | #include <stdlib.h> |
22 | #include <stdio.h> | |
23 | #include <stdarg.h> | |
24 | #include <string.h> | |
25 | #include <errno.h> | |
26 | #include <unistd.h> | |
27 | #include <inttypes.h> | |
67b915a5 | 28 | #if !defined(CONFIG_SOFTMMU) |
fd6ce8f6 | 29 | #include <sys/mman.h> |
67b915a5 | 30 | #endif |
54936004 | 31 | |
6180a181 FB |
32 | #include "cpu.h" |
33 | #include "exec-all.h" | |
54936004 | 34 | |
fd6ce8f6 | 35 | //#define DEBUG_TB_INVALIDATE |
66e85a21 | 36 | //#define DEBUG_FLUSH |
9fa3e853 | 37 | //#define DEBUG_TLB |
fd6ce8f6 FB |
38 | |
39 | /* make various TB consistency checks */ | |
40 | //#define DEBUG_TB_CHECK | |
98857888 | 41 | //#define DEBUG_TLB_CHECK |
fd6ce8f6 FB |
42 | |
43 | /* threshold to flush the translated code buffer */ | |
44 | #define CODE_GEN_BUFFER_MAX_SIZE (CODE_GEN_BUFFER_SIZE - CODE_GEN_MAX_SIZE) | |
45 | ||
9fa3e853 FB |
46 | #define SMC_BITMAP_USE_THRESHOLD 10 |
47 | ||
48 | #define MMAP_AREA_START 0x00000000 | |
49 | #define MMAP_AREA_END 0xa8000000 | |
fd6ce8f6 FB |
50 | |
51 | TranslationBlock tbs[CODE_GEN_MAX_BLOCKS]; | |
52 | TranslationBlock *tb_hash[CODE_GEN_HASH_SIZE]; | |
9fa3e853 | 53 | TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE]; |
fd6ce8f6 | 54 | int nb_tbs; |
eb51d102 FB |
55 | /* any access to the tbs or the page table must use this lock */ |
56 | spinlock_t tb_lock = SPIN_LOCK_UNLOCKED; | |
fd6ce8f6 FB |
57 | |
58 | uint8_t code_gen_buffer[CODE_GEN_BUFFER_SIZE]; | |
59 | uint8_t *code_gen_ptr; | |
60 | ||
9fa3e853 FB |
61 | int phys_ram_size; |
62 | int phys_ram_fd; | |
63 | uint8_t *phys_ram_base; | |
1ccde1cb | 64 | uint8_t *phys_ram_dirty; |
9fa3e853 | 65 | |
54936004 | 66 | typedef struct PageDesc { |
92e873b9 | 67 | /* list of TBs intersecting this ram page */ |
fd6ce8f6 | 68 | TranslationBlock *first_tb; |
9fa3e853 FB |
69 | /* in order to optimize self modifying code, we count the number |
70 | of lookups we do to a given page to use a bitmap */ | |
71 | unsigned int code_write_count; | |
72 | uint8_t *code_bitmap; | |
73 | #if defined(CONFIG_USER_ONLY) | |
74 | unsigned long flags; | |
75 | #endif | |
54936004 FB |
76 | } PageDesc; |
77 | ||
92e873b9 FB |
78 | typedef struct PhysPageDesc { |
79 | /* offset in host memory of the page + io_index in the low 12 bits */ | |
80 | unsigned long phys_offset; | |
81 | } PhysPageDesc; | |
82 | ||
9fa3e853 FB |
83 | typedef struct VirtPageDesc { |
84 | /* physical address of code page. It is valid only if 'valid_tag' | |
85 | matches 'virt_valid_tag' */ | |
86 | target_ulong phys_addr; | |
87 | unsigned int valid_tag; | |
88 | #if !defined(CONFIG_SOFTMMU) | |
89 | /* original page access rights. It is valid only if 'valid_tag' | |
90 | matches 'virt_valid_tag' */ | |
91 | unsigned int prot; | |
92 | #endif | |
93 | } VirtPageDesc; | |
94 | ||
54936004 FB |
95 | #define L2_BITS 10 |
96 | #define L1_BITS (32 - L2_BITS - TARGET_PAGE_BITS) | |
97 | ||
98 | #define L1_SIZE (1 << L1_BITS) | |
99 | #define L2_SIZE (1 << L2_BITS) | |
100 | ||
33417e70 | 101 | static void io_mem_init(void); |
fd6ce8f6 | 102 | |
54936004 FB |
103 | unsigned long real_host_page_size; |
104 | unsigned long host_page_bits; | |
105 | unsigned long host_page_size; | |
106 | unsigned long host_page_mask; | |
107 | ||
92e873b9 | 108 | /* XXX: for system emulation, it could just be an array */ |
54936004 | 109 | static PageDesc *l1_map[L1_SIZE]; |
92e873b9 | 110 | static PhysPageDesc *l1_phys_map[L1_SIZE]; |
54936004 | 111 | |
9fa3e853 FB |
112 | #if !defined(CONFIG_USER_ONLY) |
113 | static VirtPageDesc *l1_virt_map[L1_SIZE]; | |
114 | static unsigned int virt_valid_tag; | |
115 | #endif | |
116 | ||
33417e70 | 117 | /* io memory support */ |
33417e70 FB |
118 | CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4]; |
119 | CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4]; | |
a4193c8a | 120 | void *io_mem_opaque[IO_MEM_NB_ENTRIES]; |
33417e70 FB |
121 | static int io_mem_nb; |
122 | ||
34865134 FB |
123 | /* log support */ |
124 | char *logfilename = "/tmp/qemu.log"; | |
125 | FILE *logfile; | |
126 | int loglevel; | |
127 | ||
b346ff46 | 128 | static void page_init(void) |
54936004 FB |
129 | { |
130 | /* NOTE: we can always suppose that host_page_size >= | |
131 | TARGET_PAGE_SIZE */ | |
67b915a5 FB |
132 | #ifdef _WIN32 |
133 | real_host_page_size = 4096; | |
134 | #else | |
54936004 | 135 | real_host_page_size = getpagesize(); |
67b915a5 | 136 | #endif |
54936004 FB |
137 | if (host_page_size == 0) |
138 | host_page_size = real_host_page_size; | |
139 | if (host_page_size < TARGET_PAGE_SIZE) | |
140 | host_page_size = TARGET_PAGE_SIZE; | |
141 | host_page_bits = 0; | |
142 | while ((1 << host_page_bits) < host_page_size) | |
143 | host_page_bits++; | |
144 | host_page_mask = ~(host_page_size - 1); | |
9fa3e853 FB |
145 | #if !defined(CONFIG_USER_ONLY) |
146 | virt_valid_tag = 1; | |
147 | #endif | |
54936004 FB |
148 | } |
149 | ||
fd6ce8f6 | 150 | static inline PageDesc *page_find_alloc(unsigned int index) |
54936004 | 151 | { |
54936004 FB |
152 | PageDesc **lp, *p; |
153 | ||
54936004 FB |
154 | lp = &l1_map[index >> L2_BITS]; |
155 | p = *lp; | |
156 | if (!p) { | |
157 | /* allocate if not found */ | |
59817ccb | 158 | p = qemu_malloc(sizeof(PageDesc) * L2_SIZE); |
fd6ce8f6 | 159 | memset(p, 0, sizeof(PageDesc) * L2_SIZE); |
54936004 FB |
160 | *lp = p; |
161 | } | |
162 | return p + (index & (L2_SIZE - 1)); | |
163 | } | |
164 | ||
fd6ce8f6 | 165 | static inline PageDesc *page_find(unsigned int index) |
54936004 | 166 | { |
54936004 FB |
167 | PageDesc *p; |
168 | ||
54936004 FB |
169 | p = l1_map[index >> L2_BITS]; |
170 | if (!p) | |
171 | return 0; | |
fd6ce8f6 FB |
172 | return p + (index & (L2_SIZE - 1)); |
173 | } | |
174 | ||
92e873b9 FB |
175 | static inline PhysPageDesc *phys_page_find_alloc(unsigned int index) |
176 | { | |
177 | PhysPageDesc **lp, *p; | |
178 | ||
179 | lp = &l1_phys_map[index >> L2_BITS]; | |
180 | p = *lp; | |
181 | if (!p) { | |
182 | /* allocate if not found */ | |
183 | p = qemu_malloc(sizeof(PhysPageDesc) * L2_SIZE); | |
184 | memset(p, 0, sizeof(PhysPageDesc) * L2_SIZE); | |
185 | *lp = p; | |
186 | } | |
187 | return p + (index & (L2_SIZE - 1)); | |
188 | } | |
189 | ||
190 | static inline PhysPageDesc *phys_page_find(unsigned int index) | |
191 | { | |
192 | PhysPageDesc *p; | |
193 | ||
194 | p = l1_phys_map[index >> L2_BITS]; | |
195 | if (!p) | |
196 | return 0; | |
197 | return p + (index & (L2_SIZE - 1)); | |
198 | } | |
199 | ||
9fa3e853 | 200 | #if !defined(CONFIG_USER_ONLY) |
4f2ac237 FB |
201 | static void tlb_protect_code(CPUState *env, target_ulong addr); |
202 | static void tlb_unprotect_code_phys(CPUState *env, unsigned long phys_addr, target_ulong vaddr); | |
9fa3e853 FB |
203 | |
204 | static inline VirtPageDesc *virt_page_find_alloc(unsigned int index) | |
fd6ce8f6 | 205 | { |
9fa3e853 | 206 | VirtPageDesc **lp, *p; |
fd6ce8f6 | 207 | |
9fa3e853 FB |
208 | lp = &l1_virt_map[index >> L2_BITS]; |
209 | p = *lp; | |
210 | if (!p) { | |
211 | /* allocate if not found */ | |
59817ccb | 212 | p = qemu_malloc(sizeof(VirtPageDesc) * L2_SIZE); |
9fa3e853 FB |
213 | memset(p, 0, sizeof(VirtPageDesc) * L2_SIZE); |
214 | *lp = p; | |
215 | } | |
216 | return p + (index & (L2_SIZE - 1)); | |
217 | } | |
218 | ||
219 | static inline VirtPageDesc *virt_page_find(unsigned int index) | |
220 | { | |
221 | VirtPageDesc *p; | |
222 | ||
223 | p = l1_virt_map[index >> L2_BITS]; | |
fd6ce8f6 FB |
224 | if (!p) |
225 | return 0; | |
9fa3e853 | 226 | return p + (index & (L2_SIZE - 1)); |
54936004 FB |
227 | } |
228 | ||
9fa3e853 | 229 | static void virt_page_flush(void) |
54936004 | 230 | { |
9fa3e853 FB |
231 | int i, j; |
232 | VirtPageDesc *p; | |
233 | ||
234 | virt_valid_tag++; | |
235 | ||
236 | if (virt_valid_tag == 0) { | |
237 | virt_valid_tag = 1; | |
238 | for(i = 0; i < L1_SIZE; i++) { | |
239 | p = l1_virt_map[i]; | |
240 | if (p) { | |
241 | for(j = 0; j < L2_SIZE; j++) | |
242 | p[j].valid_tag = 0; | |
243 | } | |
fd6ce8f6 | 244 | } |
54936004 FB |
245 | } |
246 | } | |
9fa3e853 FB |
247 | #else |
248 | static void virt_page_flush(void) | |
249 | { | |
250 | } | |
251 | #endif | |
fd6ce8f6 | 252 | |
b346ff46 | 253 | void cpu_exec_init(void) |
fd6ce8f6 FB |
254 | { |
255 | if (!code_gen_ptr) { | |
256 | code_gen_ptr = code_gen_buffer; | |
b346ff46 | 257 | page_init(); |
33417e70 | 258 | io_mem_init(); |
fd6ce8f6 FB |
259 | } |
260 | } | |
261 | ||
9fa3e853 FB |
262 | static inline void invalidate_page_bitmap(PageDesc *p) |
263 | { | |
264 | if (p->code_bitmap) { | |
59817ccb | 265 | qemu_free(p->code_bitmap); |
9fa3e853 FB |
266 | p->code_bitmap = NULL; |
267 | } | |
268 | p->code_write_count = 0; | |
269 | } | |
270 | ||
fd6ce8f6 FB |
271 | /* set to NULL all the 'first_tb' fields in all PageDescs */ |
272 | static void page_flush_tb(void) | |
273 | { | |
274 | int i, j; | |
275 | PageDesc *p; | |
276 | ||
277 | for(i = 0; i < L1_SIZE; i++) { | |
278 | p = l1_map[i]; | |
279 | if (p) { | |
9fa3e853 FB |
280 | for(j = 0; j < L2_SIZE; j++) { |
281 | p->first_tb = NULL; | |
282 | invalidate_page_bitmap(p); | |
283 | p++; | |
284 | } | |
fd6ce8f6 FB |
285 | } |
286 | } | |
287 | } | |
288 | ||
289 | /* flush all the translation blocks */ | |
d4e8164f | 290 | /* XXX: tb_flush is currently not thread safe */ |
0124311e | 291 | void tb_flush(CPUState *env) |
fd6ce8f6 FB |
292 | { |
293 | int i; | |
0124311e | 294 | #if defined(DEBUG_FLUSH) |
fd6ce8f6 FB |
295 | printf("qemu: flush code_size=%d nb_tbs=%d avg_tb_size=%d\n", |
296 | code_gen_ptr - code_gen_buffer, | |
297 | nb_tbs, | |
0124311e | 298 | nb_tbs > 0 ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0); |
fd6ce8f6 FB |
299 | #endif |
300 | nb_tbs = 0; | |
301 | for(i = 0;i < CODE_GEN_HASH_SIZE; i++) | |
302 | tb_hash[i] = NULL; | |
9fa3e853 FB |
303 | virt_page_flush(); |
304 | ||
305 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) | |
306 | tb_phys_hash[i] = NULL; | |
fd6ce8f6 | 307 | page_flush_tb(); |
9fa3e853 | 308 | |
fd6ce8f6 | 309 | code_gen_ptr = code_gen_buffer; |
d4e8164f FB |
310 | /* XXX: flush processor icache at this point if cache flush is |
311 | expensive */ | |
fd6ce8f6 FB |
312 | } |
313 | ||
314 | #ifdef DEBUG_TB_CHECK | |
315 | ||
316 | static void tb_invalidate_check(unsigned long address) | |
317 | { | |
318 | TranslationBlock *tb; | |
319 | int i; | |
320 | address &= TARGET_PAGE_MASK; | |
321 | for(i = 0;i < CODE_GEN_HASH_SIZE; i++) { | |
322 | for(tb = tb_hash[i]; tb != NULL; tb = tb->hash_next) { | |
323 | if (!(address + TARGET_PAGE_SIZE <= tb->pc || | |
324 | address >= tb->pc + tb->size)) { | |
325 | printf("ERROR invalidate: address=%08lx PC=%08lx size=%04x\n", | |
326 | address, tb->pc, tb->size); | |
327 | } | |
328 | } | |
329 | } | |
330 | } | |
331 | ||
332 | /* verify that all the pages have correct rights for code */ | |
333 | static void tb_page_check(void) | |
334 | { | |
335 | TranslationBlock *tb; | |
336 | int i, flags1, flags2; | |
337 | ||
338 | for(i = 0;i < CODE_GEN_HASH_SIZE; i++) { | |
339 | for(tb = tb_hash[i]; tb != NULL; tb = tb->hash_next) { | |
340 | flags1 = page_get_flags(tb->pc); | |
341 | flags2 = page_get_flags(tb->pc + tb->size - 1); | |
342 | if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) { | |
343 | printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n", | |
344 | tb->pc, tb->size, flags1, flags2); | |
345 | } | |
346 | } | |
347 | } | |
348 | } | |
349 | ||
d4e8164f FB |
350 | void tb_jmp_check(TranslationBlock *tb) |
351 | { | |
352 | TranslationBlock *tb1; | |
353 | unsigned int n1; | |
354 | ||
355 | /* suppress any remaining jumps to this TB */ | |
356 | tb1 = tb->jmp_first; | |
357 | for(;;) { | |
358 | n1 = (long)tb1 & 3; | |
359 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
360 | if (n1 == 2) | |
361 | break; | |
362 | tb1 = tb1->jmp_next[n1]; | |
363 | } | |
364 | /* check end of list */ | |
365 | if (tb1 != tb) { | |
366 | printf("ERROR: jmp_list from 0x%08lx\n", (long)tb); | |
367 | } | |
368 | } | |
369 | ||
fd6ce8f6 FB |
370 | #endif |
371 | ||
372 | /* invalidate one TB */ | |
373 | static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb, | |
374 | int next_offset) | |
375 | { | |
376 | TranslationBlock *tb1; | |
377 | for(;;) { | |
378 | tb1 = *ptb; | |
379 | if (tb1 == tb) { | |
380 | *ptb = *(TranslationBlock **)((char *)tb1 + next_offset); | |
381 | break; | |
382 | } | |
383 | ptb = (TranslationBlock **)((char *)tb1 + next_offset); | |
384 | } | |
385 | } | |
386 | ||
9fa3e853 FB |
387 | static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb) |
388 | { | |
389 | TranslationBlock *tb1; | |
390 | unsigned int n1; | |
391 | ||
392 | for(;;) { | |
393 | tb1 = *ptb; | |
394 | n1 = (long)tb1 & 3; | |
395 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
396 | if (tb1 == tb) { | |
397 | *ptb = tb1->page_next[n1]; | |
398 | break; | |
399 | } | |
400 | ptb = &tb1->page_next[n1]; | |
401 | } | |
402 | } | |
403 | ||
d4e8164f FB |
404 | static inline void tb_jmp_remove(TranslationBlock *tb, int n) |
405 | { | |
406 | TranslationBlock *tb1, **ptb; | |
407 | unsigned int n1; | |
408 | ||
409 | ptb = &tb->jmp_next[n]; | |
410 | tb1 = *ptb; | |
411 | if (tb1) { | |
412 | /* find tb(n) in circular list */ | |
413 | for(;;) { | |
414 | tb1 = *ptb; | |
415 | n1 = (long)tb1 & 3; | |
416 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
417 | if (n1 == n && tb1 == tb) | |
418 | break; | |
419 | if (n1 == 2) { | |
420 | ptb = &tb1->jmp_first; | |
421 | } else { | |
422 | ptb = &tb1->jmp_next[n1]; | |
423 | } | |
424 | } | |
425 | /* now we can suppress tb(n) from the list */ | |
426 | *ptb = tb->jmp_next[n]; | |
427 | ||
428 | tb->jmp_next[n] = NULL; | |
429 | } | |
430 | } | |
431 | ||
432 | /* reset the jump entry 'n' of a TB so that it is not chained to | |
433 | another TB */ | |
434 | static inline void tb_reset_jump(TranslationBlock *tb, int n) | |
435 | { | |
436 | tb_set_jmp_target(tb, n, (unsigned long)(tb->tc_ptr + tb->tb_next_offset[n])); | |
437 | } | |
438 | ||
9fa3e853 | 439 | static inline void tb_invalidate(TranslationBlock *tb) |
fd6ce8f6 | 440 | { |
d4e8164f | 441 | unsigned int h, n1; |
9fa3e853 | 442 | TranslationBlock *tb1, *tb2, **ptb; |
d4e8164f | 443 | |
36bdbe54 | 444 | tb_invalidated_flag = 1; |
59817ccb | 445 | |
fd6ce8f6 FB |
446 | /* remove the TB from the hash list */ |
447 | h = tb_hash_func(tb->pc); | |
9fa3e853 FB |
448 | ptb = &tb_hash[h]; |
449 | for(;;) { | |
450 | tb1 = *ptb; | |
451 | /* NOTE: the TB is not necessarily linked in the hash. It | |
452 | indicates that it is not currently used */ | |
453 | if (tb1 == NULL) | |
454 | return; | |
455 | if (tb1 == tb) { | |
456 | *ptb = tb1->hash_next; | |
457 | break; | |
458 | } | |
459 | ptb = &tb1->hash_next; | |
fd6ce8f6 | 460 | } |
d4e8164f FB |
461 | |
462 | /* suppress this TB from the two jump lists */ | |
463 | tb_jmp_remove(tb, 0); | |
464 | tb_jmp_remove(tb, 1); | |
465 | ||
466 | /* suppress any remaining jumps to this TB */ | |
467 | tb1 = tb->jmp_first; | |
468 | for(;;) { | |
469 | n1 = (long)tb1 & 3; | |
470 | if (n1 == 2) | |
471 | break; | |
472 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
473 | tb2 = tb1->jmp_next[n1]; | |
474 | tb_reset_jump(tb1, n1); | |
475 | tb1->jmp_next[n1] = NULL; | |
476 | tb1 = tb2; | |
477 | } | |
478 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); /* fail safe */ | |
fd6ce8f6 FB |
479 | } |
480 | ||
9fa3e853 | 481 | static inline void tb_phys_invalidate(TranslationBlock *tb, unsigned int page_addr) |
fd6ce8f6 | 482 | { |
fd6ce8f6 | 483 | PageDesc *p; |
9fa3e853 FB |
484 | unsigned int h; |
485 | target_ulong phys_pc; | |
486 | ||
487 | /* remove the TB from the hash list */ | |
488 | phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
489 | h = tb_phys_hash_func(phys_pc); | |
490 | tb_remove(&tb_phys_hash[h], tb, | |
491 | offsetof(TranslationBlock, phys_hash_next)); | |
492 | ||
493 | /* remove the TB from the page list */ | |
494 | if (tb->page_addr[0] != page_addr) { | |
495 | p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS); | |
496 | tb_page_remove(&p->first_tb, tb); | |
497 | invalidate_page_bitmap(p); | |
498 | } | |
499 | if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) { | |
500 | p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS); | |
501 | tb_page_remove(&p->first_tb, tb); | |
502 | invalidate_page_bitmap(p); | |
503 | } | |
504 | ||
505 | tb_invalidate(tb); | |
506 | } | |
507 | ||
508 | static inline void set_bits(uint8_t *tab, int start, int len) | |
509 | { | |
510 | int end, mask, end1; | |
511 | ||
512 | end = start + len; | |
513 | tab += start >> 3; | |
514 | mask = 0xff << (start & 7); | |
515 | if ((start & ~7) == (end & ~7)) { | |
516 | if (start < end) { | |
517 | mask &= ~(0xff << (end & 7)); | |
518 | *tab |= mask; | |
519 | } | |
520 | } else { | |
521 | *tab++ |= mask; | |
522 | start = (start + 8) & ~7; | |
523 | end1 = end & ~7; | |
524 | while (start < end1) { | |
525 | *tab++ = 0xff; | |
526 | start += 8; | |
527 | } | |
528 | if (start < end) { | |
529 | mask = ~(0xff << (end & 7)); | |
530 | *tab |= mask; | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
535 | static void build_page_bitmap(PageDesc *p) | |
536 | { | |
537 | int n, tb_start, tb_end; | |
538 | TranslationBlock *tb; | |
539 | ||
59817ccb | 540 | p->code_bitmap = qemu_malloc(TARGET_PAGE_SIZE / 8); |
9fa3e853 FB |
541 | if (!p->code_bitmap) |
542 | return; | |
543 | memset(p->code_bitmap, 0, TARGET_PAGE_SIZE / 8); | |
544 | ||
545 | tb = p->first_tb; | |
546 | while (tb != NULL) { | |
547 | n = (long)tb & 3; | |
548 | tb = (TranslationBlock *)((long)tb & ~3); | |
549 | /* NOTE: this is subtle as a TB may span two physical pages */ | |
550 | if (n == 0) { | |
551 | /* NOTE: tb_end may be after the end of the page, but | |
552 | it is not a problem */ | |
553 | tb_start = tb->pc & ~TARGET_PAGE_MASK; | |
554 | tb_end = tb_start + tb->size; | |
555 | if (tb_end > TARGET_PAGE_SIZE) | |
556 | tb_end = TARGET_PAGE_SIZE; | |
557 | } else { | |
558 | tb_start = 0; | |
559 | tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
560 | } | |
561 | set_bits(p->code_bitmap, tb_start, tb_end - tb_start); | |
562 | tb = tb->page_next[n]; | |
563 | } | |
564 | } | |
565 | ||
d720b93d FB |
566 | #ifdef TARGET_HAS_PRECISE_SMC |
567 | ||
568 | static void tb_gen_code(CPUState *env, | |
569 | target_ulong pc, target_ulong cs_base, int flags, | |
570 | int cflags) | |
571 | { | |
572 | TranslationBlock *tb; | |
573 | uint8_t *tc_ptr; | |
574 | target_ulong phys_pc, phys_page2, virt_page2; | |
575 | int code_gen_size; | |
576 | ||
577 | phys_pc = get_phys_addr_code(env, (unsigned long)pc); | |
578 | tb = tb_alloc((unsigned long)pc); | |
579 | if (!tb) { | |
580 | /* flush must be done */ | |
581 | tb_flush(env); | |
582 | /* cannot fail at this point */ | |
583 | tb = tb_alloc((unsigned long)pc); | |
584 | } | |
585 | tc_ptr = code_gen_ptr; | |
586 | tb->tc_ptr = tc_ptr; | |
587 | tb->cs_base = cs_base; | |
588 | tb->flags = flags; | |
589 | tb->cflags = cflags; | |
590 | cpu_gen_code(env, tb, CODE_GEN_MAX_SIZE, &code_gen_size); | |
591 | code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); | |
592 | ||
593 | /* check next page if needed */ | |
594 | virt_page2 = ((unsigned long)pc + tb->size - 1) & TARGET_PAGE_MASK; | |
595 | phys_page2 = -1; | |
596 | if (((unsigned long)pc & TARGET_PAGE_MASK) != virt_page2) { | |
597 | phys_page2 = get_phys_addr_code(env, virt_page2); | |
598 | } | |
599 | tb_link_phys(tb, phys_pc, phys_page2); | |
600 | } | |
601 | #endif | |
602 | ||
9fa3e853 FB |
603 | /* invalidate all TBs which intersect with the target physical page |
604 | starting in range [start;end[. NOTE: start and end must refer to | |
d720b93d FB |
605 | the same physical page. 'is_cpu_write_access' should be true if called |
606 | from a real cpu write access: the virtual CPU will exit the current | |
607 | TB if code is modified inside this TB. */ | |
608 | void tb_invalidate_phys_page_range(target_ulong start, target_ulong end, | |
609 | int is_cpu_write_access) | |
610 | { | |
611 | int n, current_tb_modified, current_tb_not_found, current_flags; | |
612 | #if defined(TARGET_HAS_PRECISE_SMC) || !defined(CONFIG_USER_ONLY) | |
613 | CPUState *env = cpu_single_env; | |
614 | #endif | |
9fa3e853 | 615 | PageDesc *p; |
ea1c1802 | 616 | TranslationBlock *tb, *tb_next, *current_tb, *saved_tb; |
9fa3e853 | 617 | target_ulong tb_start, tb_end; |
d720b93d | 618 | target_ulong current_pc, current_cs_base; |
9fa3e853 FB |
619 | |
620 | p = page_find(start >> TARGET_PAGE_BITS); | |
621 | if (!p) | |
622 | return; | |
623 | if (!p->code_bitmap && | |
d720b93d FB |
624 | ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && |
625 | is_cpu_write_access) { | |
9fa3e853 FB |
626 | /* build code bitmap */ |
627 | build_page_bitmap(p); | |
628 | } | |
629 | ||
630 | /* we remove all the TBs in the range [start, end[ */ | |
631 | /* XXX: see if in some cases it could be faster to invalidate all the code */ | |
d720b93d FB |
632 | current_tb_not_found = is_cpu_write_access; |
633 | current_tb_modified = 0; | |
634 | current_tb = NULL; /* avoid warning */ | |
635 | current_pc = 0; /* avoid warning */ | |
636 | current_cs_base = 0; /* avoid warning */ | |
637 | current_flags = 0; /* avoid warning */ | |
9fa3e853 FB |
638 | tb = p->first_tb; |
639 | while (tb != NULL) { | |
640 | n = (long)tb & 3; | |
641 | tb = (TranslationBlock *)((long)tb & ~3); | |
642 | tb_next = tb->page_next[n]; | |
643 | /* NOTE: this is subtle as a TB may span two physical pages */ | |
644 | if (n == 0) { | |
645 | /* NOTE: tb_end may be after the end of the page, but | |
646 | it is not a problem */ | |
647 | tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
648 | tb_end = tb_start + tb->size; | |
649 | } else { | |
650 | tb_start = tb->page_addr[1]; | |
651 | tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
652 | } | |
653 | if (!(tb_end <= start || tb_start >= end)) { | |
d720b93d FB |
654 | #ifdef TARGET_HAS_PRECISE_SMC |
655 | if (current_tb_not_found) { | |
656 | current_tb_not_found = 0; | |
657 | current_tb = NULL; | |
658 | if (env->mem_write_pc) { | |
659 | /* now we have a real cpu fault */ | |
660 | current_tb = tb_find_pc(env->mem_write_pc); | |
661 | } | |
662 | } | |
663 | if (current_tb == tb && | |
664 | !(current_tb->cflags & CF_SINGLE_INSN)) { | |
665 | /* If we are modifying the current TB, we must stop | |
666 | its execution. We could be more precise by checking | |
667 | that the modification is after the current PC, but it | |
668 | would require a specialized function to partially | |
669 | restore the CPU state */ | |
670 | ||
671 | current_tb_modified = 1; | |
672 | cpu_restore_state(current_tb, env, | |
673 | env->mem_write_pc, NULL); | |
674 | #if defined(TARGET_I386) | |
675 | current_flags = env->hflags; | |
676 | current_flags |= (env->eflags & (IOPL_MASK | TF_MASK | VM_MASK)); | |
677 | current_cs_base = (target_ulong)env->segs[R_CS].base; | |
678 | current_pc = current_cs_base + env->eip; | |
679 | #else | |
680 | #error unsupported CPU | |
681 | #endif | |
682 | } | |
683 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
ea1c1802 FB |
684 | saved_tb = env->current_tb; |
685 | env->current_tb = NULL; | |
9fa3e853 | 686 | tb_phys_invalidate(tb, -1); |
ea1c1802 FB |
687 | env->current_tb = saved_tb; |
688 | if (env->interrupt_request && env->current_tb) | |
689 | cpu_interrupt(env, env->interrupt_request); | |
9fa3e853 FB |
690 | } |
691 | tb = tb_next; | |
692 | } | |
693 | #if !defined(CONFIG_USER_ONLY) | |
694 | /* if no code remaining, no need to continue to use slow writes */ | |
695 | if (!p->first_tb) { | |
696 | invalidate_page_bitmap(p); | |
d720b93d FB |
697 | if (is_cpu_write_access) { |
698 | tlb_unprotect_code_phys(env, start, env->mem_write_vaddr); | |
699 | } | |
700 | } | |
701 | #endif | |
702 | #ifdef TARGET_HAS_PRECISE_SMC | |
703 | if (current_tb_modified) { | |
704 | /* we generate a block containing just the instruction | |
705 | modifying the memory. It will ensure that it cannot modify | |
706 | itself */ | |
ea1c1802 | 707 | env->current_tb = NULL; |
d720b93d FB |
708 | tb_gen_code(env, current_pc, current_cs_base, current_flags, |
709 | CF_SINGLE_INSN); | |
710 | cpu_resume_from_signal(env, NULL); | |
9fa3e853 | 711 | } |
fd6ce8f6 | 712 | #endif |
9fa3e853 | 713 | } |
fd6ce8f6 | 714 | |
9fa3e853 | 715 | /* len must be <= 8 and start must be a multiple of len */ |
d720b93d | 716 | static inline void tb_invalidate_phys_page_fast(target_ulong start, int len) |
9fa3e853 FB |
717 | { |
718 | PageDesc *p; | |
719 | int offset, b; | |
59817ccb | 720 | #if 0 |
a4193c8a FB |
721 | if (1) { |
722 | if (loglevel) { | |
723 | fprintf(logfile, "modifying code at 0x%x size=%d EIP=%x PC=%08x\n", | |
724 | cpu_single_env->mem_write_vaddr, len, | |
725 | cpu_single_env->eip, | |
726 | cpu_single_env->eip + (long)cpu_single_env->segs[R_CS].base); | |
727 | } | |
59817ccb FB |
728 | } |
729 | #endif | |
9fa3e853 FB |
730 | p = page_find(start >> TARGET_PAGE_BITS); |
731 | if (!p) | |
732 | return; | |
733 | if (p->code_bitmap) { | |
734 | offset = start & ~TARGET_PAGE_MASK; | |
735 | b = p->code_bitmap[offset >> 3] >> (offset & 7); | |
736 | if (b & ((1 << len) - 1)) | |
737 | goto do_invalidate; | |
738 | } else { | |
739 | do_invalidate: | |
d720b93d | 740 | tb_invalidate_phys_page_range(start, start + len, 1); |
9fa3e853 FB |
741 | } |
742 | } | |
743 | ||
9fa3e853 | 744 | #if !defined(CONFIG_SOFTMMU) |
d720b93d FB |
745 | static void tb_invalidate_phys_page(target_ulong addr, |
746 | unsigned long pc, void *puc) | |
9fa3e853 | 747 | { |
d720b93d FB |
748 | int n, current_flags, current_tb_modified; |
749 | target_ulong current_pc, current_cs_base; | |
9fa3e853 | 750 | PageDesc *p; |
d720b93d FB |
751 | TranslationBlock *tb, *current_tb; |
752 | #ifdef TARGET_HAS_PRECISE_SMC | |
753 | CPUState *env = cpu_single_env; | |
754 | #endif | |
9fa3e853 FB |
755 | |
756 | addr &= TARGET_PAGE_MASK; | |
757 | p = page_find(addr >> TARGET_PAGE_BITS); | |
758 | if (!p) | |
759 | return; | |
760 | tb = p->first_tb; | |
d720b93d FB |
761 | current_tb_modified = 0; |
762 | current_tb = NULL; | |
763 | current_pc = 0; /* avoid warning */ | |
764 | current_cs_base = 0; /* avoid warning */ | |
765 | current_flags = 0; /* avoid warning */ | |
766 | #ifdef TARGET_HAS_PRECISE_SMC | |
767 | if (tb && pc != 0) { | |
768 | current_tb = tb_find_pc(pc); | |
769 | } | |
770 | #endif | |
9fa3e853 FB |
771 | while (tb != NULL) { |
772 | n = (long)tb & 3; | |
773 | tb = (TranslationBlock *)((long)tb & ~3); | |
d720b93d FB |
774 | #ifdef TARGET_HAS_PRECISE_SMC |
775 | if (current_tb == tb && | |
776 | !(current_tb->cflags & CF_SINGLE_INSN)) { | |
777 | /* If we are modifying the current TB, we must stop | |
778 | its execution. We could be more precise by checking | |
779 | that the modification is after the current PC, but it | |
780 | would require a specialized function to partially | |
781 | restore the CPU state */ | |
782 | ||
783 | current_tb_modified = 1; | |
784 | cpu_restore_state(current_tb, env, pc, puc); | |
785 | #if defined(TARGET_I386) | |
786 | current_flags = env->hflags; | |
787 | current_flags |= (env->eflags & (IOPL_MASK | TF_MASK | VM_MASK)); | |
788 | current_cs_base = (target_ulong)env->segs[R_CS].base; | |
789 | current_pc = current_cs_base + env->eip; | |
790 | #else | |
791 | #error unsupported CPU | |
792 | #endif | |
793 | } | |
794 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
9fa3e853 FB |
795 | tb_phys_invalidate(tb, addr); |
796 | tb = tb->page_next[n]; | |
797 | } | |
fd6ce8f6 | 798 | p->first_tb = NULL; |
d720b93d FB |
799 | #ifdef TARGET_HAS_PRECISE_SMC |
800 | if (current_tb_modified) { | |
801 | /* we generate a block containing just the instruction | |
802 | modifying the memory. It will ensure that it cannot modify | |
803 | itself */ | |
ea1c1802 | 804 | env->current_tb = NULL; |
d720b93d FB |
805 | tb_gen_code(env, current_pc, current_cs_base, current_flags, |
806 | CF_SINGLE_INSN); | |
807 | cpu_resume_from_signal(env, puc); | |
808 | } | |
809 | #endif | |
fd6ce8f6 | 810 | } |
9fa3e853 | 811 | #endif |
fd6ce8f6 FB |
812 | |
813 | /* add the tb in the target page and protect it if necessary */ | |
9fa3e853 FB |
814 | static inline void tb_alloc_page(TranslationBlock *tb, |
815 | unsigned int n, unsigned int page_addr) | |
fd6ce8f6 FB |
816 | { |
817 | PageDesc *p; | |
9fa3e853 FB |
818 | TranslationBlock *last_first_tb; |
819 | ||
820 | tb->page_addr[n] = page_addr; | |
821 | p = page_find(page_addr >> TARGET_PAGE_BITS); | |
822 | tb->page_next[n] = p->first_tb; | |
823 | last_first_tb = p->first_tb; | |
824 | p->first_tb = (TranslationBlock *)((long)tb | n); | |
825 | invalidate_page_bitmap(p); | |
fd6ce8f6 | 826 | |
d720b93d FB |
827 | #ifdef TARGET_HAS_SMC |
828 | ||
9fa3e853 | 829 | #if defined(CONFIG_USER_ONLY) |
fd6ce8f6 | 830 | if (p->flags & PAGE_WRITE) { |
9fa3e853 FB |
831 | unsigned long host_start, host_end, addr; |
832 | int prot; | |
833 | ||
fd6ce8f6 FB |
834 | /* force the host page as non writable (writes will have a |
835 | page fault + mprotect overhead) */ | |
fd6ce8f6 FB |
836 | host_start = page_addr & host_page_mask; |
837 | host_end = host_start + host_page_size; | |
838 | prot = 0; | |
839 | for(addr = host_start; addr < host_end; addr += TARGET_PAGE_SIZE) | |
840 | prot |= page_get_flags(addr); | |
841 | mprotect((void *)host_start, host_page_size, | |
842 | (prot & PAGE_BITS) & ~PAGE_WRITE); | |
843 | #ifdef DEBUG_TB_INVALIDATE | |
844 | printf("protecting code page: 0x%08lx\n", | |
845 | host_start); | |
846 | #endif | |
847 | p->flags &= ~PAGE_WRITE; | |
fd6ce8f6 | 848 | } |
9fa3e853 FB |
849 | #else |
850 | /* if some code is already present, then the pages are already | |
851 | protected. So we handle the case where only the first TB is | |
852 | allocated in a physical page */ | |
853 | if (!last_first_tb) { | |
854 | target_ulong virt_addr; | |
855 | ||
856 | virt_addr = (tb->pc & TARGET_PAGE_MASK) + (n << TARGET_PAGE_BITS); | |
857 | tlb_protect_code(cpu_single_env, virt_addr); | |
858 | } | |
859 | #endif | |
d720b93d FB |
860 | |
861 | #endif /* TARGET_HAS_SMC */ | |
fd6ce8f6 FB |
862 | } |
863 | ||
864 | /* Allocate a new translation block. Flush the translation buffer if | |
865 | too many translation blocks or too much generated code. */ | |
d4e8164f | 866 | TranslationBlock *tb_alloc(unsigned long pc) |
fd6ce8f6 FB |
867 | { |
868 | TranslationBlock *tb; | |
fd6ce8f6 FB |
869 | |
870 | if (nb_tbs >= CODE_GEN_MAX_BLOCKS || | |
871 | (code_gen_ptr - code_gen_buffer) >= CODE_GEN_BUFFER_MAX_SIZE) | |
d4e8164f | 872 | return NULL; |
fd6ce8f6 FB |
873 | tb = &tbs[nb_tbs++]; |
874 | tb->pc = pc; | |
b448f2f3 | 875 | tb->cflags = 0; |
d4e8164f FB |
876 | return tb; |
877 | } | |
878 | ||
9fa3e853 FB |
879 | /* add a new TB and link it to the physical page tables. phys_page2 is |
880 | (-1) to indicate that only one page contains the TB. */ | |
881 | void tb_link_phys(TranslationBlock *tb, | |
882 | target_ulong phys_pc, target_ulong phys_page2) | |
d4e8164f | 883 | { |
9fa3e853 FB |
884 | unsigned int h; |
885 | TranslationBlock **ptb; | |
886 | ||
887 | /* add in the physical hash table */ | |
888 | h = tb_phys_hash_func(phys_pc); | |
889 | ptb = &tb_phys_hash[h]; | |
890 | tb->phys_hash_next = *ptb; | |
891 | *ptb = tb; | |
fd6ce8f6 FB |
892 | |
893 | /* add in the page list */ | |
9fa3e853 FB |
894 | tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK); |
895 | if (phys_page2 != -1) | |
896 | tb_alloc_page(tb, 1, phys_page2); | |
897 | else | |
898 | tb->page_addr[1] = -1; | |
61382a50 FB |
899 | #ifdef DEBUG_TB_CHECK |
900 | tb_page_check(); | |
901 | #endif | |
9fa3e853 FB |
902 | } |
903 | ||
904 | /* link the tb with the other TBs */ | |
905 | void tb_link(TranslationBlock *tb) | |
906 | { | |
907 | #if !defined(CONFIG_USER_ONLY) | |
908 | { | |
909 | VirtPageDesc *vp; | |
910 | target_ulong addr; | |
911 | ||
912 | /* save the code memory mappings (needed to invalidate the code) */ | |
913 | addr = tb->pc & TARGET_PAGE_MASK; | |
914 | vp = virt_page_find_alloc(addr >> TARGET_PAGE_BITS); | |
98857888 FB |
915 | #ifdef DEBUG_TLB_CHECK |
916 | if (vp->valid_tag == virt_valid_tag && | |
917 | vp->phys_addr != tb->page_addr[0]) { | |
918 | printf("Error tb addr=0x%x phys=0x%x vp->phys_addr=0x%x\n", | |
919 | addr, tb->page_addr[0], vp->phys_addr); | |
920 | } | |
921 | #endif | |
9fa3e853 | 922 | vp->phys_addr = tb->page_addr[0]; |
59817ccb FB |
923 | if (vp->valid_tag != virt_valid_tag) { |
924 | vp->valid_tag = virt_valid_tag; | |
925 | #if !defined(CONFIG_SOFTMMU) | |
926 | vp->prot = 0; | |
927 | #endif | |
928 | } | |
9fa3e853 FB |
929 | |
930 | if (tb->page_addr[1] != -1) { | |
931 | addr += TARGET_PAGE_SIZE; | |
932 | vp = virt_page_find_alloc(addr >> TARGET_PAGE_BITS); | |
98857888 FB |
933 | #ifdef DEBUG_TLB_CHECK |
934 | if (vp->valid_tag == virt_valid_tag && | |
935 | vp->phys_addr != tb->page_addr[1]) { | |
936 | printf("Error tb addr=0x%x phys=0x%x vp->phys_addr=0x%x\n", | |
937 | addr, tb->page_addr[1], vp->phys_addr); | |
938 | } | |
939 | #endif | |
9fa3e853 | 940 | vp->phys_addr = tb->page_addr[1]; |
59817ccb FB |
941 | if (vp->valid_tag != virt_valid_tag) { |
942 | vp->valid_tag = virt_valid_tag; | |
943 | #if !defined(CONFIG_SOFTMMU) | |
944 | vp->prot = 0; | |
945 | #endif | |
946 | } | |
9fa3e853 FB |
947 | } |
948 | } | |
949 | #endif | |
950 | ||
d4e8164f FB |
951 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); |
952 | tb->jmp_next[0] = NULL; | |
953 | tb->jmp_next[1] = NULL; | |
b448f2f3 FB |
954 | #ifdef USE_CODE_COPY |
955 | tb->cflags &= ~CF_FP_USED; | |
956 | if (tb->cflags & CF_TB_FP_USED) | |
957 | tb->cflags |= CF_FP_USED; | |
958 | #endif | |
d4e8164f FB |
959 | |
960 | /* init original jump addresses */ | |
961 | if (tb->tb_next_offset[0] != 0xffff) | |
962 | tb_reset_jump(tb, 0); | |
963 | if (tb->tb_next_offset[1] != 0xffff) | |
964 | tb_reset_jump(tb, 1); | |
fd6ce8f6 FB |
965 | } |
966 | ||
9fa3e853 FB |
967 | /* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr < |
968 | tb[1].tc_ptr. Return NULL if not found */ | |
969 | TranslationBlock *tb_find_pc(unsigned long tc_ptr) | |
fd6ce8f6 | 970 | { |
9fa3e853 FB |
971 | int m_min, m_max, m; |
972 | unsigned long v; | |
973 | TranslationBlock *tb; | |
a513fe19 FB |
974 | |
975 | if (nb_tbs <= 0) | |
976 | return NULL; | |
977 | if (tc_ptr < (unsigned long)code_gen_buffer || | |
978 | tc_ptr >= (unsigned long)code_gen_ptr) | |
979 | return NULL; | |
980 | /* binary search (cf Knuth) */ | |
981 | m_min = 0; | |
982 | m_max = nb_tbs - 1; | |
983 | while (m_min <= m_max) { | |
984 | m = (m_min + m_max) >> 1; | |
985 | tb = &tbs[m]; | |
986 | v = (unsigned long)tb->tc_ptr; | |
987 | if (v == tc_ptr) | |
988 | return tb; | |
989 | else if (tc_ptr < v) { | |
990 | m_max = m - 1; | |
991 | } else { | |
992 | m_min = m + 1; | |
993 | } | |
994 | } | |
995 | return &tbs[m_max]; | |
996 | } | |
7501267e | 997 | |
ea041c0e FB |
998 | static void tb_reset_jump_recursive(TranslationBlock *tb); |
999 | ||
1000 | static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n) | |
1001 | { | |
1002 | TranslationBlock *tb1, *tb_next, **ptb; | |
1003 | unsigned int n1; | |
1004 | ||
1005 | tb1 = tb->jmp_next[n]; | |
1006 | if (tb1 != NULL) { | |
1007 | /* find head of list */ | |
1008 | for(;;) { | |
1009 | n1 = (long)tb1 & 3; | |
1010 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
1011 | if (n1 == 2) | |
1012 | break; | |
1013 | tb1 = tb1->jmp_next[n1]; | |
1014 | } | |
1015 | /* we are now sure now that tb jumps to tb1 */ | |
1016 | tb_next = tb1; | |
1017 | ||
1018 | /* remove tb from the jmp_first list */ | |
1019 | ptb = &tb_next->jmp_first; | |
1020 | for(;;) { | |
1021 | tb1 = *ptb; | |
1022 | n1 = (long)tb1 & 3; | |
1023 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
1024 | if (n1 == n && tb1 == tb) | |
1025 | break; | |
1026 | ptb = &tb1->jmp_next[n1]; | |
1027 | } | |
1028 | *ptb = tb->jmp_next[n]; | |
1029 | tb->jmp_next[n] = NULL; | |
1030 | ||
1031 | /* suppress the jump to next tb in generated code */ | |
1032 | tb_reset_jump(tb, n); | |
1033 | ||
0124311e | 1034 | /* suppress jumps in the tb on which we could have jumped */ |
ea041c0e FB |
1035 | tb_reset_jump_recursive(tb_next); |
1036 | } | |
1037 | } | |
1038 | ||
1039 | static void tb_reset_jump_recursive(TranslationBlock *tb) | |
1040 | { | |
1041 | tb_reset_jump_recursive2(tb, 0); | |
1042 | tb_reset_jump_recursive2(tb, 1); | |
1043 | } | |
1044 | ||
d720b93d FB |
1045 | static void breakpoint_invalidate(CPUState *env, target_ulong pc) |
1046 | { | |
1047 | target_ulong phys_addr; | |
1048 | ||
1049 | phys_addr = cpu_get_phys_page_debug(env, pc); | |
1050 | tb_invalidate_phys_page_range(phys_addr, phys_addr + 1, 0); | |
1051 | } | |
1052 | ||
c33a346e FB |
1053 | /* add a breakpoint. EXCP_DEBUG is returned by the CPU loop if a |
1054 | breakpoint is reached */ | |
2e12669a | 1055 | int cpu_breakpoint_insert(CPUState *env, target_ulong pc) |
4c3a88a2 | 1056 | { |
a541f297 | 1057 | #if defined(TARGET_I386) || defined(TARGET_PPC) |
4c3a88a2 | 1058 | int i; |
d720b93d | 1059 | |
4c3a88a2 FB |
1060 | for(i = 0; i < env->nb_breakpoints; i++) { |
1061 | if (env->breakpoints[i] == pc) | |
1062 | return 0; | |
1063 | } | |
1064 | ||
1065 | if (env->nb_breakpoints >= MAX_BREAKPOINTS) | |
1066 | return -1; | |
1067 | env->breakpoints[env->nb_breakpoints++] = pc; | |
d720b93d FB |
1068 | |
1069 | breakpoint_invalidate(env, pc); | |
4c3a88a2 FB |
1070 | return 0; |
1071 | #else | |
1072 | return -1; | |
1073 | #endif | |
1074 | } | |
1075 | ||
1076 | /* remove a breakpoint */ | |
2e12669a | 1077 | int cpu_breakpoint_remove(CPUState *env, target_ulong pc) |
4c3a88a2 | 1078 | { |
a541f297 | 1079 | #if defined(TARGET_I386) || defined(TARGET_PPC) |
4c3a88a2 FB |
1080 | int i; |
1081 | for(i = 0; i < env->nb_breakpoints; i++) { | |
1082 | if (env->breakpoints[i] == pc) | |
1083 | goto found; | |
1084 | } | |
1085 | return -1; | |
1086 | found: | |
1087 | memmove(&env->breakpoints[i], &env->breakpoints[i + 1], | |
1088 | (env->nb_breakpoints - (i + 1)) * sizeof(env->breakpoints[0])); | |
1089 | env->nb_breakpoints--; | |
d720b93d FB |
1090 | |
1091 | breakpoint_invalidate(env, pc); | |
4c3a88a2 FB |
1092 | return 0; |
1093 | #else | |
1094 | return -1; | |
1095 | #endif | |
1096 | } | |
1097 | ||
c33a346e FB |
1098 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
1099 | CPU loop after each instruction */ | |
1100 | void cpu_single_step(CPUState *env, int enabled) | |
1101 | { | |
a541f297 | 1102 | #if defined(TARGET_I386) || defined(TARGET_PPC) |
c33a346e FB |
1103 | if (env->singlestep_enabled != enabled) { |
1104 | env->singlestep_enabled = enabled; | |
1105 | /* must flush all the translated code to avoid inconsistancies */ | |
9fa3e853 | 1106 | /* XXX: only flush what is necessary */ |
0124311e | 1107 | tb_flush(env); |
c33a346e FB |
1108 | } |
1109 | #endif | |
1110 | } | |
1111 | ||
34865134 FB |
1112 | /* enable or disable low levels log */ |
1113 | void cpu_set_log(int log_flags) | |
1114 | { | |
1115 | loglevel = log_flags; | |
1116 | if (loglevel && !logfile) { | |
1117 | logfile = fopen(logfilename, "w"); | |
1118 | if (!logfile) { | |
1119 | perror(logfilename); | |
1120 | _exit(1); | |
1121 | } | |
9fa3e853 FB |
1122 | #if !defined(CONFIG_SOFTMMU) |
1123 | /* must avoid mmap() usage of glibc by setting a buffer "by hand" */ | |
1124 | { | |
1125 | static uint8_t logfile_buf[4096]; | |
1126 | setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf)); | |
1127 | } | |
1128 | #else | |
34865134 | 1129 | setvbuf(logfile, NULL, _IOLBF, 0); |
9fa3e853 | 1130 | #endif |
34865134 FB |
1131 | } |
1132 | } | |
1133 | ||
1134 | void cpu_set_log_filename(const char *filename) | |
1135 | { | |
1136 | logfilename = strdup(filename); | |
1137 | } | |
c33a346e | 1138 | |
0124311e | 1139 | /* mask must never be zero, except for A20 change call */ |
68a79315 | 1140 | void cpu_interrupt(CPUState *env, int mask) |
ea041c0e FB |
1141 | { |
1142 | TranslationBlock *tb; | |
ee8b7021 | 1143 | static int interrupt_lock; |
59817ccb | 1144 | |
68a79315 | 1145 | env->interrupt_request |= mask; |
ea041c0e FB |
1146 | /* if the cpu is currently executing code, we must unlink it and |
1147 | all the potentially executing TB */ | |
1148 | tb = env->current_tb; | |
ee8b7021 FB |
1149 | if (tb && !testandset(&interrupt_lock)) { |
1150 | env->current_tb = NULL; | |
ea041c0e | 1151 | tb_reset_jump_recursive(tb); |
ee8b7021 | 1152 | interrupt_lock = 0; |
ea041c0e FB |
1153 | } |
1154 | } | |
1155 | ||
b54ad049 FB |
1156 | void cpu_reset_interrupt(CPUState *env, int mask) |
1157 | { | |
1158 | env->interrupt_request &= ~mask; | |
1159 | } | |
1160 | ||
f193c797 FB |
1161 | CPULogItem cpu_log_items[] = { |
1162 | { CPU_LOG_TB_OUT_ASM, "out_asm", | |
1163 | "show generated host assembly code for each compiled TB" }, | |
1164 | { CPU_LOG_TB_IN_ASM, "in_asm", | |
1165 | "show target assembly code for each compiled TB" }, | |
1166 | { CPU_LOG_TB_OP, "op", | |
1167 | "show micro ops for each compiled TB (only usable if 'in_asm' used)" }, | |
1168 | #ifdef TARGET_I386 | |
1169 | { CPU_LOG_TB_OP_OPT, "op_opt", | |
1170 | "show micro ops after optimization for each compiled TB" }, | |
1171 | #endif | |
1172 | { CPU_LOG_INT, "int", | |
1173 | "show interrupts/exceptions in short format" }, | |
1174 | { CPU_LOG_EXEC, "exec", | |
1175 | "show trace before each executed TB (lots of logs)" }, | |
9fddaa0c FB |
1176 | { CPU_LOG_TB_CPU, "cpu", |
1177 | "show CPU state before bloc translation" }, | |
f193c797 FB |
1178 | #ifdef TARGET_I386 |
1179 | { CPU_LOG_PCALL, "pcall", | |
1180 | "show protected mode far calls/returns/exceptions" }, | |
1181 | #endif | |
fd872598 FB |
1182 | { CPU_LOG_IOPORT, "ioport", |
1183 | "show all i/o ports accesses" }, | |
f193c797 FB |
1184 | { 0, NULL, NULL }, |
1185 | }; | |
1186 | ||
1187 | static int cmp1(const char *s1, int n, const char *s2) | |
1188 | { | |
1189 | if (strlen(s2) != n) | |
1190 | return 0; | |
1191 | return memcmp(s1, s2, n) == 0; | |
1192 | } | |
1193 | ||
1194 | /* takes a comma separated list of log masks. Return 0 if error. */ | |
1195 | int cpu_str_to_log_mask(const char *str) | |
1196 | { | |
1197 | CPULogItem *item; | |
1198 | int mask; | |
1199 | const char *p, *p1; | |
1200 | ||
1201 | p = str; | |
1202 | mask = 0; | |
1203 | for(;;) { | |
1204 | p1 = strchr(p, ','); | |
1205 | if (!p1) | |
1206 | p1 = p + strlen(p); | |
1207 | for(item = cpu_log_items; item->mask != 0; item++) { | |
1208 | if (cmp1(p, p1 - p, item->name)) | |
1209 | goto found; | |
1210 | } | |
1211 | return 0; | |
1212 | found: | |
1213 | mask |= item->mask; | |
1214 | if (*p1 != ',') | |
1215 | break; | |
1216 | p = p1 + 1; | |
1217 | } | |
1218 | return mask; | |
1219 | } | |
ea041c0e | 1220 | |
7501267e FB |
1221 | void cpu_abort(CPUState *env, const char *fmt, ...) |
1222 | { | |
1223 | va_list ap; | |
1224 | ||
1225 | va_start(ap, fmt); | |
1226 | fprintf(stderr, "qemu: fatal: "); | |
1227 | vfprintf(stderr, fmt, ap); | |
1228 | fprintf(stderr, "\n"); | |
1229 | #ifdef TARGET_I386 | |
1230 | cpu_x86_dump_state(env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP); | |
1231 | #endif | |
1232 | va_end(ap); | |
1233 | abort(); | |
1234 | } | |
1235 | ||
0124311e FB |
1236 | #if !defined(CONFIG_USER_ONLY) |
1237 | ||
ee8b7021 FB |
1238 | /* NOTE: if flush_global is true, also flush global entries (not |
1239 | implemented yet) */ | |
1240 | void tlb_flush(CPUState *env, int flush_global) | |
33417e70 | 1241 | { |
33417e70 | 1242 | int i; |
0124311e | 1243 | |
9fa3e853 FB |
1244 | #if defined(DEBUG_TLB) |
1245 | printf("tlb_flush:\n"); | |
1246 | #endif | |
0124311e FB |
1247 | /* must reset current TB so that interrupts cannot modify the |
1248 | links while we are modifying them */ | |
1249 | env->current_tb = NULL; | |
1250 | ||
33417e70 FB |
1251 | for(i = 0; i < CPU_TLB_SIZE; i++) { |
1252 | env->tlb_read[0][i].address = -1; | |
1253 | env->tlb_write[0][i].address = -1; | |
1254 | env->tlb_read[1][i].address = -1; | |
1255 | env->tlb_write[1][i].address = -1; | |
1256 | } | |
9fa3e853 FB |
1257 | |
1258 | virt_page_flush(); | |
1259 | for(i = 0;i < CODE_GEN_HASH_SIZE; i++) | |
1260 | tb_hash[i] = NULL; | |
1261 | ||
1262 | #if !defined(CONFIG_SOFTMMU) | |
1263 | munmap((void *)MMAP_AREA_START, MMAP_AREA_END - MMAP_AREA_START); | |
1264 | #endif | |
33417e70 FB |
1265 | } |
1266 | ||
274da6b2 | 1267 | static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr) |
61382a50 FB |
1268 | { |
1269 | if (addr == (tlb_entry->address & | |
1270 | (TARGET_PAGE_MASK | TLB_INVALID_MASK))) | |
1271 | tlb_entry->address = -1; | |
1272 | } | |
1273 | ||
2e12669a | 1274 | void tlb_flush_page(CPUState *env, target_ulong addr) |
33417e70 | 1275 | { |
9fa3e853 FB |
1276 | int i, n; |
1277 | VirtPageDesc *vp; | |
1278 | PageDesc *p; | |
1279 | TranslationBlock *tb; | |
0124311e | 1280 | |
9fa3e853 FB |
1281 | #if defined(DEBUG_TLB) |
1282 | printf("tlb_flush_page: 0x%08x\n", addr); | |
1283 | #endif | |
0124311e FB |
1284 | /* must reset current TB so that interrupts cannot modify the |
1285 | links while we are modifying them */ | |
1286 | env->current_tb = NULL; | |
61382a50 FB |
1287 | |
1288 | addr &= TARGET_PAGE_MASK; | |
1289 | i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
1290 | tlb_flush_entry(&env->tlb_read[0][i], addr); | |
1291 | tlb_flush_entry(&env->tlb_write[0][i], addr); | |
1292 | tlb_flush_entry(&env->tlb_read[1][i], addr); | |
1293 | tlb_flush_entry(&env->tlb_write[1][i], addr); | |
0124311e | 1294 | |
9fa3e853 FB |
1295 | /* remove from the virtual pc hash table all the TB at this |
1296 | virtual address */ | |
1297 | ||
1298 | vp = virt_page_find(addr >> TARGET_PAGE_BITS); | |
1299 | if (vp && vp->valid_tag == virt_valid_tag) { | |
1300 | p = page_find(vp->phys_addr >> TARGET_PAGE_BITS); | |
1301 | if (p) { | |
1302 | /* we remove all the links to the TBs in this virtual page */ | |
1303 | tb = p->first_tb; | |
1304 | while (tb != NULL) { | |
1305 | n = (long)tb & 3; | |
1306 | tb = (TranslationBlock *)((long)tb & ~3); | |
1307 | if ((tb->pc & TARGET_PAGE_MASK) == addr || | |
1308 | ((tb->pc + tb->size - 1) & TARGET_PAGE_MASK) == addr) { | |
1309 | tb_invalidate(tb); | |
1310 | } | |
1311 | tb = tb->page_next[n]; | |
1312 | } | |
1313 | } | |
98857888 | 1314 | vp->valid_tag = 0; |
9fa3e853 FB |
1315 | } |
1316 | ||
0124311e | 1317 | #if !defined(CONFIG_SOFTMMU) |
9fa3e853 | 1318 | if (addr < MMAP_AREA_END) |
0124311e | 1319 | munmap((void *)addr, TARGET_PAGE_SIZE); |
61382a50 | 1320 | #endif |
9fa3e853 FB |
1321 | } |
1322 | ||
4f2ac237 | 1323 | static inline void tlb_protect_code1(CPUTLBEntry *tlb_entry, target_ulong addr) |
9fa3e853 FB |
1324 | { |
1325 | if (addr == (tlb_entry->address & | |
1326 | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) && | |
98857888 FB |
1327 | (tlb_entry->address & ~TARGET_PAGE_MASK) != IO_MEM_CODE && |
1328 | (tlb_entry->address & ~TARGET_PAGE_MASK) != IO_MEM_ROM) { | |
1ccde1cb | 1329 | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_CODE; |
9fa3e853 FB |
1330 | } |
1331 | } | |
1332 | ||
1333 | /* update the TLBs so that writes to code in the virtual page 'addr' | |
1334 | can be detected */ | |
4f2ac237 | 1335 | static void tlb_protect_code(CPUState *env, target_ulong addr) |
9fa3e853 FB |
1336 | { |
1337 | int i; | |
1338 | ||
1339 | addr &= TARGET_PAGE_MASK; | |
1340 | i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
1341 | tlb_protect_code1(&env->tlb_write[0][i], addr); | |
1342 | tlb_protect_code1(&env->tlb_write[1][i], addr); | |
1343 | #if !defined(CONFIG_SOFTMMU) | |
1344 | /* NOTE: as we generated the code for this page, it is already at | |
1345 | least readable */ | |
1346 | if (addr < MMAP_AREA_END) | |
1347 | mprotect((void *)addr, TARGET_PAGE_SIZE, PROT_READ); | |
1348 | #endif | |
1349 | } | |
1350 | ||
9fa3e853 | 1351 | static inline void tlb_unprotect_code2(CPUTLBEntry *tlb_entry, |
4f2ac237 | 1352 | unsigned long phys_addr) |
9fa3e853 FB |
1353 | { |
1354 | if ((tlb_entry->address & ~TARGET_PAGE_MASK) == IO_MEM_CODE && | |
1355 | ((tlb_entry->address & TARGET_PAGE_MASK) + tlb_entry->addend) == phys_addr) { | |
1ccde1cb | 1356 | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_NOTDIRTY; |
9fa3e853 FB |
1357 | } |
1358 | } | |
1359 | ||
1360 | /* update the TLB so that writes in physical page 'phys_addr' are no longer | |
1361 | tested self modifying code */ | |
4f2ac237 | 1362 | static void tlb_unprotect_code_phys(CPUState *env, unsigned long phys_addr, target_ulong vaddr) |
9fa3e853 FB |
1363 | { |
1364 | int i; | |
1365 | ||
1366 | phys_addr &= TARGET_PAGE_MASK; | |
1ccde1cb FB |
1367 | phys_addr += (long)phys_ram_base; |
1368 | i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
1369 | tlb_unprotect_code2(&env->tlb_write[0][i], phys_addr); | |
1370 | tlb_unprotect_code2(&env->tlb_write[1][i], phys_addr); | |
1371 | } | |
1372 | ||
1373 | static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry, | |
1374 | unsigned long start, unsigned long length) | |
1375 | { | |
1376 | unsigned long addr; | |
1377 | if ((tlb_entry->address & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { | |
1378 | addr = (tlb_entry->address & TARGET_PAGE_MASK) + tlb_entry->addend; | |
1379 | if ((addr - start) < length) { | |
1380 | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_NOTDIRTY; | |
1381 | } | |
1382 | } | |
1383 | } | |
1384 | ||
1385 | void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end) | |
1386 | { | |
1387 | CPUState *env; | |
4f2ac237 | 1388 | unsigned long length, start1; |
1ccde1cb FB |
1389 | int i; |
1390 | ||
1391 | start &= TARGET_PAGE_MASK; | |
1392 | end = TARGET_PAGE_ALIGN(end); | |
1393 | ||
1394 | length = end - start; | |
1395 | if (length == 0) | |
1396 | return; | |
1397 | memset(phys_ram_dirty + (start >> TARGET_PAGE_BITS), 0, length >> TARGET_PAGE_BITS); | |
1398 | ||
1399 | env = cpu_single_env; | |
1400 | /* we modify the TLB cache so that the dirty bit will be set again | |
1401 | when accessing the range */ | |
59817ccb | 1402 | start1 = start + (unsigned long)phys_ram_base; |
9fa3e853 | 1403 | for(i = 0; i < CPU_TLB_SIZE; i++) |
59817ccb | 1404 | tlb_reset_dirty_range(&env->tlb_write[0][i], start1, length); |
9fa3e853 | 1405 | for(i = 0; i < CPU_TLB_SIZE; i++) |
59817ccb FB |
1406 | tlb_reset_dirty_range(&env->tlb_write[1][i], start1, length); |
1407 | ||
1408 | #if !defined(CONFIG_SOFTMMU) | |
1409 | /* XXX: this is expensive */ | |
1410 | { | |
1411 | VirtPageDesc *p; | |
1412 | int j; | |
1413 | target_ulong addr; | |
1414 | ||
1415 | for(i = 0; i < L1_SIZE; i++) { | |
1416 | p = l1_virt_map[i]; | |
1417 | if (p) { | |
1418 | addr = i << (TARGET_PAGE_BITS + L2_BITS); | |
1419 | for(j = 0; j < L2_SIZE; j++) { | |
1420 | if (p->valid_tag == virt_valid_tag && | |
1421 | p->phys_addr >= start && p->phys_addr < end && | |
1422 | (p->prot & PROT_WRITE)) { | |
1423 | if (addr < MMAP_AREA_END) { | |
1424 | mprotect((void *)addr, TARGET_PAGE_SIZE, | |
1425 | p->prot & ~PROT_WRITE); | |
1426 | } | |
1427 | } | |
1428 | addr += TARGET_PAGE_SIZE; | |
1429 | p++; | |
1430 | } | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | #endif | |
1ccde1cb FB |
1435 | } |
1436 | ||
1437 | static inline void tlb_set_dirty1(CPUTLBEntry *tlb_entry, | |
1438 | unsigned long start) | |
1439 | { | |
1440 | unsigned long addr; | |
1441 | if ((tlb_entry->address & ~TARGET_PAGE_MASK) == IO_MEM_NOTDIRTY) { | |
1442 | addr = (tlb_entry->address & TARGET_PAGE_MASK) + tlb_entry->addend; | |
1443 | if (addr == start) { | |
1444 | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_RAM; | |
1445 | } | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | /* update the TLB corresponding to virtual page vaddr and phys addr | |
1450 | addr so that it is no longer dirty */ | |
1451 | static inline void tlb_set_dirty(unsigned long addr, target_ulong vaddr) | |
1452 | { | |
1453 | CPUState *env = cpu_single_env; | |
1454 | int i; | |
1455 | ||
1456 | phys_ram_dirty[(addr - (unsigned long)phys_ram_base) >> TARGET_PAGE_BITS] = 1; | |
1457 | ||
1458 | addr &= TARGET_PAGE_MASK; | |
1459 | i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
1460 | tlb_set_dirty1(&env->tlb_write[0][i], addr); | |
1461 | tlb_set_dirty1(&env->tlb_write[1][i], addr); | |
9fa3e853 FB |
1462 | } |
1463 | ||
59817ccb FB |
1464 | /* add a new TLB entry. At most one entry for a given virtual address |
1465 | is permitted. Return 0 if OK or 2 if the page could not be mapped | |
1466 | (can only happen in non SOFTMMU mode for I/O pages or pages | |
1467 | conflicting with the host address space). */ | |
2e12669a FB |
1468 | int tlb_set_page(CPUState *env, target_ulong vaddr, |
1469 | target_phys_addr_t paddr, int prot, | |
9fa3e853 FB |
1470 | int is_user, int is_softmmu) |
1471 | { | |
92e873b9 | 1472 | PhysPageDesc *p; |
4f2ac237 | 1473 | unsigned long pd; |
9fa3e853 FB |
1474 | TranslationBlock *first_tb; |
1475 | unsigned int index; | |
4f2ac237 FB |
1476 | target_ulong address; |
1477 | unsigned long addend; | |
9fa3e853 FB |
1478 | int ret; |
1479 | ||
92e873b9 FB |
1480 | p = phys_page_find(paddr >> TARGET_PAGE_BITS); |
1481 | first_tb = NULL; | |
9fa3e853 FB |
1482 | if (!p) { |
1483 | pd = IO_MEM_UNASSIGNED; | |
9fa3e853 | 1484 | } else { |
92e873b9 | 1485 | PageDesc *p1; |
9fa3e853 | 1486 | pd = p->phys_offset; |
92e873b9 FB |
1487 | if ((pd & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) { |
1488 | /* NOTE: we also allocate the page at this stage */ | |
1489 | p1 = page_find_alloc(pd >> TARGET_PAGE_BITS); | |
1490 | first_tb = p1->first_tb; | |
1491 | } | |
9fa3e853 FB |
1492 | } |
1493 | #if defined(DEBUG_TLB) | |
1494 | printf("tlb_set_page: vaddr=0x%08x paddr=0x%08x prot=%x u=%d c=%d smmu=%d pd=0x%08x\n", | |
1495 | vaddr, paddr, prot, is_user, (first_tb != NULL), is_softmmu, pd); | |
1496 | #endif | |
1497 | ||
1498 | ret = 0; | |
1499 | #if !defined(CONFIG_SOFTMMU) | |
1500 | if (is_softmmu) | |
1501 | #endif | |
1502 | { | |
1503 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM) { | |
1504 | /* IO memory case */ | |
1505 | address = vaddr | pd; | |
1506 | addend = paddr; | |
1507 | } else { | |
1508 | /* standard memory */ | |
1509 | address = vaddr; | |
1510 | addend = (unsigned long)phys_ram_base + (pd & TARGET_PAGE_MASK); | |
1511 | } | |
1512 | ||
1513 | index = (vaddr >> 12) & (CPU_TLB_SIZE - 1); | |
1514 | addend -= vaddr; | |
67b915a5 | 1515 | if (prot & PAGE_READ) { |
9fa3e853 FB |
1516 | env->tlb_read[is_user][index].address = address; |
1517 | env->tlb_read[is_user][index].addend = addend; | |
1518 | } else { | |
1519 | env->tlb_read[is_user][index].address = -1; | |
1520 | env->tlb_read[is_user][index].addend = -1; | |
1521 | } | |
67b915a5 | 1522 | if (prot & PAGE_WRITE) { |
9fa3e853 FB |
1523 | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM) { |
1524 | /* ROM: access is ignored (same as unassigned) */ | |
1525 | env->tlb_write[is_user][index].address = vaddr | IO_MEM_ROM; | |
1ccde1cb | 1526 | env->tlb_write[is_user][index].addend = addend; |
d720b93d FB |
1527 | } else |
1528 | /* XXX: the PowerPC code seems not ready to handle | |
1529 | self modifying code with DCBI */ | |
1530 | #if defined(TARGET_HAS_SMC) || 1 | |
1531 | if (first_tb) { | |
9fa3e853 FB |
1532 | /* if code is present, we use a specific memory |
1533 | handler. It works only for physical memory access */ | |
1534 | env->tlb_write[is_user][index].address = vaddr | IO_MEM_CODE; | |
1ccde1cb | 1535 | env->tlb_write[is_user][index].addend = addend; |
d720b93d FB |
1536 | } else |
1537 | #endif | |
1538 | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && | |
1ccde1cb FB |
1539 | !cpu_physical_memory_is_dirty(pd)) { |
1540 | env->tlb_write[is_user][index].address = vaddr | IO_MEM_NOTDIRTY; | |
1541 | env->tlb_write[is_user][index].addend = addend; | |
9fa3e853 FB |
1542 | } else { |
1543 | env->tlb_write[is_user][index].address = address; | |
1544 | env->tlb_write[is_user][index].addend = addend; | |
1545 | } | |
1546 | } else { | |
1547 | env->tlb_write[is_user][index].address = -1; | |
1548 | env->tlb_write[is_user][index].addend = -1; | |
1549 | } | |
1550 | } | |
1551 | #if !defined(CONFIG_SOFTMMU) | |
1552 | else { | |
1553 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM) { | |
1554 | /* IO access: no mapping is done as it will be handled by the | |
1555 | soft MMU */ | |
1556 | if (!(env->hflags & HF_SOFTMMU_MASK)) | |
1557 | ret = 2; | |
1558 | } else { | |
1559 | void *map_addr; | |
59817ccb FB |
1560 | |
1561 | if (vaddr >= MMAP_AREA_END) { | |
1562 | ret = 2; | |
1563 | } else { | |
1564 | if (prot & PROT_WRITE) { | |
1565 | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM || | |
d720b93d | 1566 | #if defined(TARGET_HAS_SMC) || 1 |
59817ccb | 1567 | first_tb || |
d720b93d | 1568 | #endif |
59817ccb FB |
1569 | ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && |
1570 | !cpu_physical_memory_is_dirty(pd))) { | |
1571 | /* ROM: we do as if code was inside */ | |
1572 | /* if code is present, we only map as read only and save the | |
1573 | original mapping */ | |
1574 | VirtPageDesc *vp; | |
1575 | ||
1576 | vp = virt_page_find_alloc(vaddr >> TARGET_PAGE_BITS); | |
1577 | vp->phys_addr = pd; | |
1578 | vp->prot = prot; | |
1579 | vp->valid_tag = virt_valid_tag; | |
1580 | prot &= ~PAGE_WRITE; | |
1581 | } | |
1582 | } | |
1583 | map_addr = mmap((void *)vaddr, TARGET_PAGE_SIZE, prot, | |
1584 | MAP_SHARED | MAP_FIXED, phys_ram_fd, (pd & TARGET_PAGE_MASK)); | |
1585 | if (map_addr == MAP_FAILED) { | |
1586 | cpu_abort(env, "mmap failed when mapped physical address 0x%08x to virtual address 0x%08x\n", | |
1587 | paddr, vaddr); | |
9fa3e853 | 1588 | } |
9fa3e853 FB |
1589 | } |
1590 | } | |
1591 | } | |
1592 | #endif | |
1593 | return ret; | |
1594 | } | |
1595 | ||
1596 | /* called from signal handler: invalidate the code and unprotect the | |
1597 | page. Return TRUE if the fault was succesfully handled. */ | |
d720b93d | 1598 | int page_unprotect(unsigned long addr, unsigned long pc, void *puc) |
9fa3e853 FB |
1599 | { |
1600 | #if !defined(CONFIG_SOFTMMU) | |
1601 | VirtPageDesc *vp; | |
1602 | ||
1603 | #if defined(DEBUG_TLB) | |
1604 | printf("page_unprotect: addr=0x%08x\n", addr); | |
1605 | #endif | |
1606 | addr &= TARGET_PAGE_MASK; | |
59817ccb FB |
1607 | |
1608 | /* if it is not mapped, no need to worry here */ | |
1609 | if (addr >= MMAP_AREA_END) | |
1610 | return 0; | |
9fa3e853 FB |
1611 | vp = virt_page_find(addr >> TARGET_PAGE_BITS); |
1612 | if (!vp) | |
1613 | return 0; | |
1614 | /* NOTE: in this case, validate_tag is _not_ tested as it | |
1615 | validates only the code TLB */ | |
1616 | if (vp->valid_tag != virt_valid_tag) | |
1617 | return 0; | |
1618 | if (!(vp->prot & PAGE_WRITE)) | |
1619 | return 0; | |
1620 | #if defined(DEBUG_TLB) | |
1621 | printf("page_unprotect: addr=0x%08x phys_addr=0x%08x prot=%x\n", | |
1622 | addr, vp->phys_addr, vp->prot); | |
1623 | #endif | |
59817ccb FB |
1624 | if (mprotect((void *)addr, TARGET_PAGE_SIZE, vp->prot) < 0) |
1625 | cpu_abort(cpu_single_env, "error mprotect addr=0x%lx prot=%d\n", | |
1626 | (unsigned long)addr, vp->prot); | |
d720b93d FB |
1627 | /* set the dirty bit */ |
1628 | phys_ram_dirty[vp->phys_addr >> TARGET_PAGE_BITS] = 1; | |
1629 | /* flush the code inside */ | |
1630 | tb_invalidate_phys_page(vp->phys_addr, pc, puc); | |
9fa3e853 FB |
1631 | return 1; |
1632 | #else | |
1633 | return 0; | |
1634 | #endif | |
33417e70 FB |
1635 | } |
1636 | ||
0124311e FB |
1637 | #else |
1638 | ||
ee8b7021 | 1639 | void tlb_flush(CPUState *env, int flush_global) |
0124311e FB |
1640 | { |
1641 | } | |
1642 | ||
2e12669a | 1643 | void tlb_flush_page(CPUState *env, target_ulong addr) |
0124311e FB |
1644 | { |
1645 | } | |
1646 | ||
2e12669a FB |
1647 | int tlb_set_page(CPUState *env, target_ulong vaddr, |
1648 | target_phys_addr_t paddr, int prot, | |
9fa3e853 FB |
1649 | int is_user, int is_softmmu) |
1650 | { | |
1651 | return 0; | |
1652 | } | |
0124311e | 1653 | |
9fa3e853 FB |
1654 | /* dump memory mappings */ |
1655 | void page_dump(FILE *f) | |
33417e70 | 1656 | { |
9fa3e853 FB |
1657 | unsigned long start, end; |
1658 | int i, j, prot, prot1; | |
1659 | PageDesc *p; | |
33417e70 | 1660 | |
9fa3e853 FB |
1661 | fprintf(f, "%-8s %-8s %-8s %s\n", |
1662 | "start", "end", "size", "prot"); | |
1663 | start = -1; | |
1664 | end = -1; | |
1665 | prot = 0; | |
1666 | for(i = 0; i <= L1_SIZE; i++) { | |
1667 | if (i < L1_SIZE) | |
1668 | p = l1_map[i]; | |
1669 | else | |
1670 | p = NULL; | |
1671 | for(j = 0;j < L2_SIZE; j++) { | |
1672 | if (!p) | |
1673 | prot1 = 0; | |
1674 | else | |
1675 | prot1 = p[j].flags; | |
1676 | if (prot1 != prot) { | |
1677 | end = (i << (32 - L1_BITS)) | (j << TARGET_PAGE_BITS); | |
1678 | if (start != -1) { | |
1679 | fprintf(f, "%08lx-%08lx %08lx %c%c%c\n", | |
1680 | start, end, end - start, | |
1681 | prot & PAGE_READ ? 'r' : '-', | |
1682 | prot & PAGE_WRITE ? 'w' : '-', | |
1683 | prot & PAGE_EXEC ? 'x' : '-'); | |
1684 | } | |
1685 | if (prot1 != 0) | |
1686 | start = end; | |
1687 | else | |
1688 | start = -1; | |
1689 | prot = prot1; | |
1690 | } | |
1691 | if (!p) | |
1692 | break; | |
1693 | } | |
33417e70 | 1694 | } |
33417e70 FB |
1695 | } |
1696 | ||
9fa3e853 | 1697 | int page_get_flags(unsigned long address) |
33417e70 | 1698 | { |
9fa3e853 FB |
1699 | PageDesc *p; |
1700 | ||
1701 | p = page_find(address >> TARGET_PAGE_BITS); | |
33417e70 | 1702 | if (!p) |
9fa3e853 FB |
1703 | return 0; |
1704 | return p->flags; | |
1705 | } | |
1706 | ||
1707 | /* modify the flags of a page and invalidate the code if | |
1708 | necessary. The flag PAGE_WRITE_ORG is positionned automatically | |
1709 | depending on PAGE_WRITE */ | |
1710 | void page_set_flags(unsigned long start, unsigned long end, int flags) | |
1711 | { | |
1712 | PageDesc *p; | |
1713 | unsigned long addr; | |
1714 | ||
1715 | start = start & TARGET_PAGE_MASK; | |
1716 | end = TARGET_PAGE_ALIGN(end); | |
1717 | if (flags & PAGE_WRITE) | |
1718 | flags |= PAGE_WRITE_ORG; | |
1719 | spin_lock(&tb_lock); | |
1720 | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) { | |
1721 | p = page_find_alloc(addr >> TARGET_PAGE_BITS); | |
1722 | /* if the write protection is set, then we invalidate the code | |
1723 | inside */ | |
1724 | if (!(p->flags & PAGE_WRITE) && | |
1725 | (flags & PAGE_WRITE) && | |
1726 | p->first_tb) { | |
d720b93d | 1727 | tb_invalidate_phys_page(addr, 0, NULL); |
9fa3e853 FB |
1728 | } |
1729 | p->flags = flags; | |
1730 | } | |
1731 | spin_unlock(&tb_lock); | |
33417e70 FB |
1732 | } |
1733 | ||
9fa3e853 FB |
1734 | /* called from signal handler: invalidate the code and unprotect the |
1735 | page. Return TRUE if the fault was succesfully handled. */ | |
d720b93d | 1736 | int page_unprotect(unsigned long address, unsigned long pc, void *puc) |
9fa3e853 FB |
1737 | { |
1738 | unsigned int page_index, prot, pindex; | |
1739 | PageDesc *p, *p1; | |
1740 | unsigned long host_start, host_end, addr; | |
1741 | ||
1742 | host_start = address & host_page_mask; | |
1743 | page_index = host_start >> TARGET_PAGE_BITS; | |
1744 | p1 = page_find(page_index); | |
1745 | if (!p1) | |
1746 | return 0; | |
1747 | host_end = host_start + host_page_size; | |
1748 | p = p1; | |
1749 | prot = 0; | |
1750 | for(addr = host_start;addr < host_end; addr += TARGET_PAGE_SIZE) { | |
1751 | prot |= p->flags; | |
1752 | p++; | |
1753 | } | |
1754 | /* if the page was really writable, then we change its | |
1755 | protection back to writable */ | |
1756 | if (prot & PAGE_WRITE_ORG) { | |
1757 | pindex = (address - host_start) >> TARGET_PAGE_BITS; | |
1758 | if (!(p1[pindex].flags & PAGE_WRITE)) { | |
1759 | mprotect((void *)host_start, host_page_size, | |
1760 | (prot & PAGE_BITS) | PAGE_WRITE); | |
1761 | p1[pindex].flags |= PAGE_WRITE; | |
1762 | /* and since the content will be modified, we must invalidate | |
1763 | the corresponding translated code. */ | |
d720b93d | 1764 | tb_invalidate_phys_page(address, pc, puc); |
9fa3e853 FB |
1765 | #ifdef DEBUG_TB_CHECK |
1766 | tb_invalidate_check(address); | |
1767 | #endif | |
1768 | return 1; | |
1769 | } | |
1770 | } | |
1771 | return 0; | |
1772 | } | |
1773 | ||
1774 | /* call this function when system calls directly modify a memory area */ | |
1775 | void page_unprotect_range(uint8_t *data, unsigned long data_size) | |
1776 | { | |
1777 | unsigned long start, end, addr; | |
1778 | ||
1779 | start = (unsigned long)data; | |
1780 | end = start + data_size; | |
1781 | start &= TARGET_PAGE_MASK; | |
1782 | end = TARGET_PAGE_ALIGN(end); | |
1783 | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) { | |
d720b93d | 1784 | page_unprotect(addr, 0, NULL); |
9fa3e853 FB |
1785 | } |
1786 | } | |
1787 | ||
1ccde1cb FB |
1788 | static inline void tlb_set_dirty(unsigned long addr, target_ulong vaddr) |
1789 | { | |
1790 | } | |
9fa3e853 FB |
1791 | #endif /* defined(CONFIG_USER_ONLY) */ |
1792 | ||
33417e70 FB |
1793 | /* register physical memory. 'size' must be a multiple of the target |
1794 | page size. If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an | |
1795 | io memory page */ | |
2e12669a FB |
1796 | void cpu_register_physical_memory(target_phys_addr_t start_addr, |
1797 | unsigned long size, | |
1798 | unsigned long phys_offset) | |
33417e70 FB |
1799 | { |
1800 | unsigned long addr, end_addr; | |
92e873b9 | 1801 | PhysPageDesc *p; |
33417e70 | 1802 | |
5fd386f6 | 1803 | size = (size + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK; |
33417e70 | 1804 | end_addr = start_addr + size; |
5fd386f6 | 1805 | for(addr = start_addr; addr != end_addr; addr += TARGET_PAGE_SIZE) { |
92e873b9 | 1806 | p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS); |
9fa3e853 FB |
1807 | p->phys_offset = phys_offset; |
1808 | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) | |
33417e70 FB |
1809 | phys_offset += TARGET_PAGE_SIZE; |
1810 | } | |
1811 | } | |
1812 | ||
a4193c8a | 1813 | static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr) |
33417e70 FB |
1814 | { |
1815 | return 0; | |
1816 | } | |
1817 | ||
a4193c8a | 1818 | static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
33417e70 FB |
1819 | { |
1820 | } | |
1821 | ||
1822 | static CPUReadMemoryFunc *unassigned_mem_read[3] = { | |
1823 | unassigned_mem_readb, | |
1824 | unassigned_mem_readb, | |
1825 | unassigned_mem_readb, | |
1826 | }; | |
1827 | ||
1828 | static CPUWriteMemoryFunc *unassigned_mem_write[3] = { | |
1829 | unassigned_mem_writeb, | |
1830 | unassigned_mem_writeb, | |
1831 | unassigned_mem_writeb, | |
1832 | }; | |
1833 | ||
9fa3e853 FB |
1834 | /* self modifying code support in soft mmu mode : writing to a page |
1835 | containing code comes to these functions */ | |
1836 | ||
a4193c8a | 1837 | static void code_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
9fa3e853 | 1838 | { |
1ccde1cb FB |
1839 | unsigned long phys_addr; |
1840 | ||
274da6b2 | 1841 | phys_addr = addr - (unsigned long)phys_ram_base; |
9fa3e853 | 1842 | #if !defined(CONFIG_USER_ONLY) |
d720b93d | 1843 | tb_invalidate_phys_page_fast(phys_addr, 1); |
9fa3e853 | 1844 | #endif |
1ccde1cb FB |
1845 | stb_raw((uint8_t *)addr, val); |
1846 | phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1; | |
9fa3e853 FB |
1847 | } |
1848 | ||
a4193c8a | 1849 | static void code_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
9fa3e853 | 1850 | { |
1ccde1cb FB |
1851 | unsigned long phys_addr; |
1852 | ||
274da6b2 | 1853 | phys_addr = addr - (unsigned long)phys_ram_base; |
9fa3e853 | 1854 | #if !defined(CONFIG_USER_ONLY) |
d720b93d | 1855 | tb_invalidate_phys_page_fast(phys_addr, 2); |
9fa3e853 | 1856 | #endif |
1ccde1cb FB |
1857 | stw_raw((uint8_t *)addr, val); |
1858 | phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1; | |
9fa3e853 FB |
1859 | } |
1860 | ||
a4193c8a | 1861 | static void code_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
9fa3e853 | 1862 | { |
1ccde1cb FB |
1863 | unsigned long phys_addr; |
1864 | ||
274da6b2 | 1865 | phys_addr = addr - (unsigned long)phys_ram_base; |
9fa3e853 | 1866 | #if !defined(CONFIG_USER_ONLY) |
d720b93d | 1867 | tb_invalidate_phys_page_fast(phys_addr, 4); |
9fa3e853 | 1868 | #endif |
1ccde1cb FB |
1869 | stl_raw((uint8_t *)addr, val); |
1870 | phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1; | |
9fa3e853 FB |
1871 | } |
1872 | ||
1873 | static CPUReadMemoryFunc *code_mem_read[3] = { | |
1874 | NULL, /* never used */ | |
1875 | NULL, /* never used */ | |
1876 | NULL, /* never used */ | |
1877 | }; | |
1878 | ||
1879 | static CPUWriteMemoryFunc *code_mem_write[3] = { | |
1880 | code_mem_writeb, | |
1881 | code_mem_writew, | |
1882 | code_mem_writel, | |
1883 | }; | |
33417e70 | 1884 | |
a4193c8a | 1885 | static void notdirty_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1ccde1cb FB |
1886 | { |
1887 | stb_raw((uint8_t *)addr, val); | |
d720b93d | 1888 | tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr); |
1ccde1cb FB |
1889 | } |
1890 | ||
a4193c8a | 1891 | static void notdirty_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
1ccde1cb FB |
1892 | { |
1893 | stw_raw((uint8_t *)addr, val); | |
d720b93d | 1894 | tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr); |
1ccde1cb FB |
1895 | } |
1896 | ||
a4193c8a | 1897 | static void notdirty_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
1ccde1cb FB |
1898 | { |
1899 | stl_raw((uint8_t *)addr, val); | |
d720b93d | 1900 | tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr); |
1ccde1cb FB |
1901 | } |
1902 | ||
1903 | static CPUWriteMemoryFunc *notdirty_mem_write[3] = { | |
1904 | notdirty_mem_writeb, | |
1905 | notdirty_mem_writew, | |
1906 | notdirty_mem_writel, | |
1907 | }; | |
1908 | ||
33417e70 FB |
1909 | static void io_mem_init(void) |
1910 | { | |
a4193c8a FB |
1911 | cpu_register_io_memory(IO_MEM_ROM >> IO_MEM_SHIFT, code_mem_read, unassigned_mem_write, NULL); |
1912 | cpu_register_io_memory(IO_MEM_UNASSIGNED >> IO_MEM_SHIFT, unassigned_mem_read, unassigned_mem_write, NULL); | |
1913 | cpu_register_io_memory(IO_MEM_CODE >> IO_MEM_SHIFT, code_mem_read, code_mem_write, NULL); | |
1914 | cpu_register_io_memory(IO_MEM_NOTDIRTY >> IO_MEM_SHIFT, code_mem_read, notdirty_mem_write, NULL); | |
1ccde1cb FB |
1915 | io_mem_nb = 5; |
1916 | ||
1917 | /* alloc dirty bits array */ | |
59817ccb | 1918 | phys_ram_dirty = qemu_malloc(phys_ram_size >> TARGET_PAGE_BITS); |
33417e70 FB |
1919 | } |
1920 | ||
1921 | /* mem_read and mem_write are arrays of functions containing the | |
1922 | function to access byte (index 0), word (index 1) and dword (index | |
1923 | 2). All functions must be supplied. If io_index is non zero, the | |
1924 | corresponding io zone is modified. If it is zero, a new io zone is | |
1925 | allocated. The return value can be used with | |
1926 | cpu_register_physical_memory(). (-1) is returned if error. */ | |
1927 | int cpu_register_io_memory(int io_index, | |
1928 | CPUReadMemoryFunc **mem_read, | |
a4193c8a FB |
1929 | CPUWriteMemoryFunc **mem_write, |
1930 | void *opaque) | |
33417e70 FB |
1931 | { |
1932 | int i; | |
1933 | ||
1934 | if (io_index <= 0) { | |
1935 | if (io_index >= IO_MEM_NB_ENTRIES) | |
1936 | return -1; | |
1937 | io_index = io_mem_nb++; | |
1938 | } else { | |
1939 | if (io_index >= IO_MEM_NB_ENTRIES) | |
1940 | return -1; | |
1941 | } | |
1942 | ||
1943 | for(i = 0;i < 3; i++) { | |
1944 | io_mem_read[io_index][i] = mem_read[i]; | |
1945 | io_mem_write[io_index][i] = mem_write[i]; | |
1946 | } | |
a4193c8a | 1947 | io_mem_opaque[io_index] = opaque; |
33417e70 FB |
1948 | return io_index << IO_MEM_SHIFT; |
1949 | } | |
61382a50 | 1950 | |
13eb76e0 FB |
1951 | /* physical memory access (slow version, mainly for debug) */ |
1952 | #if defined(CONFIG_USER_ONLY) | |
2e12669a | 1953 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
13eb76e0 FB |
1954 | int len, int is_write) |
1955 | { | |
1956 | int l, flags; | |
1957 | target_ulong page; | |
1958 | ||
1959 | while (len > 0) { | |
1960 | page = addr & TARGET_PAGE_MASK; | |
1961 | l = (page + TARGET_PAGE_SIZE) - addr; | |
1962 | if (l > len) | |
1963 | l = len; | |
1964 | flags = page_get_flags(page); | |
1965 | if (!(flags & PAGE_VALID)) | |
1966 | return; | |
1967 | if (is_write) { | |
1968 | if (!(flags & PAGE_WRITE)) | |
1969 | return; | |
1970 | memcpy((uint8_t *)addr, buf, len); | |
1971 | } else { | |
1972 | if (!(flags & PAGE_READ)) | |
1973 | return; | |
1974 | memcpy(buf, (uint8_t *)addr, len); | |
1975 | } | |
1976 | len -= l; | |
1977 | buf += l; | |
1978 | addr += l; | |
1979 | } | |
1980 | } | |
1981 | #else | |
2e12669a | 1982 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
13eb76e0 FB |
1983 | int len, int is_write) |
1984 | { | |
1985 | int l, io_index; | |
1986 | uint8_t *ptr; | |
1987 | uint32_t val; | |
2e12669a FB |
1988 | target_phys_addr_t page; |
1989 | unsigned long pd; | |
92e873b9 | 1990 | PhysPageDesc *p; |
13eb76e0 FB |
1991 | |
1992 | while (len > 0) { | |
1993 | page = addr & TARGET_PAGE_MASK; | |
1994 | l = (page + TARGET_PAGE_SIZE) - addr; | |
1995 | if (l > len) | |
1996 | l = len; | |
92e873b9 | 1997 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
13eb76e0 FB |
1998 | if (!p) { |
1999 | pd = IO_MEM_UNASSIGNED; | |
2000 | } else { | |
2001 | pd = p->phys_offset; | |
2002 | } | |
2003 | ||
2004 | if (is_write) { | |
2005 | if ((pd & ~TARGET_PAGE_MASK) != 0) { | |
2006 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); | |
2007 | if (l >= 4 && ((addr & 3) == 0)) { | |
2008 | /* 32 bit read access */ | |
2009 | val = ldl_raw(buf); | |
a4193c8a | 2010 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val); |
13eb76e0 FB |
2011 | l = 4; |
2012 | } else if (l >= 2 && ((addr & 1) == 0)) { | |
2013 | /* 16 bit read access */ | |
2014 | val = lduw_raw(buf); | |
a4193c8a | 2015 | io_mem_write[io_index][1](io_mem_opaque[io_index], addr, val); |
13eb76e0 FB |
2016 | l = 2; |
2017 | } else { | |
2018 | /* 8 bit access */ | |
2019 | val = ldub_raw(buf); | |
a4193c8a | 2020 | io_mem_write[io_index][0](io_mem_opaque[io_index], addr, val); |
13eb76e0 FB |
2021 | l = 1; |
2022 | } | |
2023 | } else { | |
b448f2f3 FB |
2024 | unsigned long addr1; |
2025 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); | |
13eb76e0 | 2026 | /* RAM case */ |
b448f2f3 | 2027 | ptr = phys_ram_base + addr1; |
13eb76e0 | 2028 | memcpy(ptr, buf, l); |
b448f2f3 FB |
2029 | /* invalidate code */ |
2030 | tb_invalidate_phys_page_range(addr1, addr1 + l, 0); | |
2031 | /* set dirty bit */ | |
2032 | phys_ram_dirty[page >> TARGET_PAGE_BITS] = 1; | |
13eb76e0 FB |
2033 | } |
2034 | } else { | |
2035 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && | |
2036 | (pd & ~TARGET_PAGE_MASK) != IO_MEM_CODE) { | |
2037 | /* I/O case */ | |
2038 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); | |
2039 | if (l >= 4 && ((addr & 3) == 0)) { | |
2040 | /* 32 bit read access */ | |
a4193c8a | 2041 | val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr); |
13eb76e0 FB |
2042 | stl_raw(buf, val); |
2043 | l = 4; | |
2044 | } else if (l >= 2 && ((addr & 1) == 0)) { | |
2045 | /* 16 bit read access */ | |
a4193c8a | 2046 | val = io_mem_read[io_index][1](io_mem_opaque[io_index], addr); |
13eb76e0 FB |
2047 | stw_raw(buf, val); |
2048 | l = 2; | |
2049 | } else { | |
2050 | /* 8 bit access */ | |
a4193c8a | 2051 | val = io_mem_read[io_index][0](io_mem_opaque[io_index], addr); |
13eb76e0 FB |
2052 | stb_raw(buf, val); |
2053 | l = 1; | |
2054 | } | |
2055 | } else { | |
2056 | /* RAM case */ | |
2057 | ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) + | |
2058 | (addr & ~TARGET_PAGE_MASK); | |
2059 | memcpy(buf, ptr, l); | |
2060 | } | |
2061 | } | |
2062 | len -= l; | |
2063 | buf += l; | |
2064 | addr += l; | |
2065 | } | |
2066 | } | |
2067 | #endif | |
2068 | ||
2069 | /* virtual memory access for debug */ | |
b448f2f3 FB |
2070 | int cpu_memory_rw_debug(CPUState *env, target_ulong addr, |
2071 | uint8_t *buf, int len, int is_write) | |
13eb76e0 FB |
2072 | { |
2073 | int l; | |
2074 | target_ulong page, phys_addr; | |
2075 | ||
2076 | while (len > 0) { | |
2077 | page = addr & TARGET_PAGE_MASK; | |
2078 | phys_addr = cpu_get_phys_page_debug(env, page); | |
2079 | /* if no physical page mapped, return an error */ | |
2080 | if (phys_addr == -1) | |
2081 | return -1; | |
2082 | l = (page + TARGET_PAGE_SIZE) - addr; | |
2083 | if (l > len) | |
2084 | l = len; | |
b448f2f3 FB |
2085 | cpu_physical_memory_rw(phys_addr + (addr & ~TARGET_PAGE_MASK), |
2086 | buf, l, is_write); | |
13eb76e0 FB |
2087 | len -= l; |
2088 | buf += l; | |
2089 | addr += l; | |
2090 | } | |
2091 | return 0; | |
2092 | } | |
2093 | ||
61382a50 FB |
2094 | #if !defined(CONFIG_USER_ONLY) |
2095 | ||
2096 | #define MMUSUFFIX _cmmu | |
2097 | #define GETPC() NULL | |
2098 | #define env cpu_single_env | |
2099 | ||
2100 | #define SHIFT 0 | |
2101 | #include "softmmu_template.h" | |
2102 | ||
2103 | #define SHIFT 1 | |
2104 | #include "softmmu_template.h" | |
2105 | ||
2106 | #define SHIFT 2 | |
2107 | #include "softmmu_template.h" | |
2108 | ||
2109 | #define SHIFT 3 | |
2110 | #include "softmmu_template.h" | |
2111 | ||
2112 | #undef env | |
2113 | ||
2114 | #endif |