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Commit | Line | Data |
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54936004 | 1 | /* |
fd6ce8f6 | 2 | * virtual page mapping and translated block handling |
5fafdf24 | 3 | * |
54936004 FB |
4 | * Copyright (c) 2003 Fabrice Bellard |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
8167ee88 | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
54936004 | 18 | */ |
67b915a5 | 19 | #include "config.h" |
d5a8f07c FB |
20 | #ifdef _WIN32 |
21 | #include <windows.h> | |
22 | #else | |
a98d49b1 | 23 | #include <sys/types.h> |
d5a8f07c FB |
24 | #include <sys/mman.h> |
25 | #endif | |
54936004 | 26 | |
055403b2 | 27 | #include "qemu-common.h" |
6180a181 | 28 | #include "cpu.h" |
b67d9a52 | 29 | #include "tcg.h" |
b3c7724c | 30 | #include "hw/hw.h" |
cc9e98cb | 31 | #include "hw/qdev.h" |
74576198 | 32 | #include "osdep.h" |
7ba1e619 | 33 | #include "kvm.h" |
432d268c | 34 | #include "hw/xen.h" |
29e922b6 | 35 | #include "qemu-timer.h" |
62152b8a AK |
36 | #include "memory.h" |
37 | #include "exec-memory.h" | |
53a5960a PB |
38 | #if defined(CONFIG_USER_ONLY) |
39 | #include <qemu.h> | |
f01576f1 JL |
40 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) |
41 | #include <sys/param.h> | |
42 | #if __FreeBSD_version >= 700104 | |
43 | #define HAVE_KINFO_GETVMMAP | |
44 | #define sigqueue sigqueue_freebsd /* avoid redefinition */ | |
45 | #include <sys/time.h> | |
46 | #include <sys/proc.h> | |
47 | #include <machine/profile.h> | |
48 | #define _KERNEL | |
49 | #include <sys/user.h> | |
50 | #undef _KERNEL | |
51 | #undef sigqueue | |
52 | #include <libutil.h> | |
53 | #endif | |
54 | #endif | |
432d268c JN |
55 | #else /* !CONFIG_USER_ONLY */ |
56 | #include "xen-mapcache.h" | |
6506e4f9 | 57 | #include "trace.h" |
53a5960a | 58 | #endif |
54936004 | 59 | |
67d95c15 AK |
60 | #define WANT_EXEC_OBSOLETE |
61 | #include "exec-obsolete.h" | |
62 | ||
fd6ce8f6 | 63 | //#define DEBUG_TB_INVALIDATE |
66e85a21 | 64 | //#define DEBUG_FLUSH |
9fa3e853 | 65 | //#define DEBUG_TLB |
67d3b957 | 66 | //#define DEBUG_UNASSIGNED |
fd6ce8f6 FB |
67 | |
68 | /* make various TB consistency checks */ | |
5fafdf24 TS |
69 | //#define DEBUG_TB_CHECK |
70 | //#define DEBUG_TLB_CHECK | |
fd6ce8f6 | 71 | |
1196be37 | 72 | //#define DEBUG_IOPORT |
db7b5426 | 73 | //#define DEBUG_SUBPAGE |
1196be37 | 74 | |
99773bd4 PB |
75 | #if !defined(CONFIG_USER_ONLY) |
76 | /* TB consistency checks only implemented for usermode emulation. */ | |
77 | #undef DEBUG_TB_CHECK | |
78 | #endif | |
79 | ||
9fa3e853 FB |
80 | #define SMC_BITMAP_USE_THRESHOLD 10 |
81 | ||
bdaf78e0 | 82 | static TranslationBlock *tbs; |
24ab68ac | 83 | static int code_gen_max_blocks; |
9fa3e853 | 84 | TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE]; |
bdaf78e0 | 85 | static int nb_tbs; |
eb51d102 | 86 | /* any access to the tbs or the page table must use this lock */ |
c227f099 | 87 | spinlock_t tb_lock = SPIN_LOCK_UNLOCKED; |
fd6ce8f6 | 88 | |
141ac468 BS |
89 | #if defined(__arm__) || defined(__sparc_v9__) |
90 | /* The prologue must be reachable with a direct jump. ARM and Sparc64 | |
91 | have limited branch ranges (possibly also PPC) so place it in a | |
d03d860b BS |
92 | section close to code segment. */ |
93 | #define code_gen_section \ | |
94 | __attribute__((__section__(".gen_code"))) \ | |
95 | __attribute__((aligned (32))) | |
f8e2af11 SW |
96 | #elif defined(_WIN32) |
97 | /* Maximum alignment for Win32 is 16. */ | |
98 | #define code_gen_section \ | |
99 | __attribute__((aligned (16))) | |
d03d860b BS |
100 | #else |
101 | #define code_gen_section \ | |
102 | __attribute__((aligned (32))) | |
103 | #endif | |
104 | ||
105 | uint8_t code_gen_prologue[1024] code_gen_section; | |
bdaf78e0 BS |
106 | static uint8_t *code_gen_buffer; |
107 | static unsigned long code_gen_buffer_size; | |
26a5f13b | 108 | /* threshold to flush the translated code buffer */ |
bdaf78e0 | 109 | static unsigned long code_gen_buffer_max_size; |
24ab68ac | 110 | static uint8_t *code_gen_ptr; |
fd6ce8f6 | 111 | |
e2eef170 | 112 | #if !defined(CONFIG_USER_ONLY) |
9fa3e853 | 113 | int phys_ram_fd; |
74576198 | 114 | static int in_migration; |
94a6b54f | 115 | |
85d59fef | 116 | RAMList ram_list = { .blocks = QLIST_HEAD_INITIALIZER(ram_list.blocks) }; |
62152b8a AK |
117 | |
118 | static MemoryRegion *system_memory; | |
309cb471 | 119 | static MemoryRegion *system_io; |
62152b8a | 120 | |
0e0df1e2 | 121 | MemoryRegion io_mem_ram, io_mem_rom, io_mem_unassigned, io_mem_notdirty; |
de712f94 | 122 | static MemoryRegion io_mem_subpage_ram; |
0e0df1e2 | 123 | |
e2eef170 | 124 | #endif |
9fa3e853 | 125 | |
6a00d601 FB |
126 | CPUState *first_cpu; |
127 | /* current CPU in the current thread. It is only valid inside | |
128 | cpu_exec() */ | |
b3c4bbe5 | 129 | DEFINE_TLS(CPUState *,cpu_single_env); |
2e70f6ef | 130 | /* 0 = Do not count executed instructions. |
bf20dc07 | 131 | 1 = Precise instruction counting. |
2e70f6ef PB |
132 | 2 = Adaptive rate instruction counting. */ |
133 | int use_icount = 0; | |
6a00d601 | 134 | |
54936004 | 135 | typedef struct PageDesc { |
92e873b9 | 136 | /* list of TBs intersecting this ram page */ |
fd6ce8f6 | 137 | TranslationBlock *first_tb; |
9fa3e853 FB |
138 | /* in order to optimize self modifying code, we count the number |
139 | of lookups we do to a given page to use a bitmap */ | |
140 | unsigned int code_write_count; | |
141 | uint8_t *code_bitmap; | |
142 | #if defined(CONFIG_USER_ONLY) | |
143 | unsigned long flags; | |
144 | #endif | |
54936004 FB |
145 | } PageDesc; |
146 | ||
41c1b1c9 | 147 | /* In system mode we want L1_MAP to be based on ram offsets, |
5cd2c5b6 RH |
148 | while in user mode we want it to be based on virtual addresses. */ |
149 | #if !defined(CONFIG_USER_ONLY) | |
41c1b1c9 PB |
150 | #if HOST_LONG_BITS < TARGET_PHYS_ADDR_SPACE_BITS |
151 | # define L1_MAP_ADDR_SPACE_BITS HOST_LONG_BITS | |
152 | #else | |
5cd2c5b6 | 153 | # define L1_MAP_ADDR_SPACE_BITS TARGET_PHYS_ADDR_SPACE_BITS |
41c1b1c9 | 154 | #endif |
bedb69ea | 155 | #else |
5cd2c5b6 | 156 | # define L1_MAP_ADDR_SPACE_BITS TARGET_VIRT_ADDR_SPACE_BITS |
bedb69ea | 157 | #endif |
54936004 | 158 | |
5cd2c5b6 RH |
159 | /* Size of the L2 (and L3, etc) page tables. */ |
160 | #define L2_BITS 10 | |
54936004 FB |
161 | #define L2_SIZE (1 << L2_BITS) |
162 | ||
5cd2c5b6 RH |
163 | /* The bits remaining after N lower levels of page tables. */ |
164 | #define P_L1_BITS_REM \ | |
165 | ((TARGET_PHYS_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % L2_BITS) | |
166 | #define V_L1_BITS_REM \ | |
167 | ((L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % L2_BITS) | |
168 | ||
169 | /* Size of the L1 page table. Avoid silly small sizes. */ | |
170 | #if P_L1_BITS_REM < 4 | |
171 | #define P_L1_BITS (P_L1_BITS_REM + L2_BITS) | |
172 | #else | |
173 | #define P_L1_BITS P_L1_BITS_REM | |
174 | #endif | |
175 | ||
176 | #if V_L1_BITS_REM < 4 | |
177 | #define V_L1_BITS (V_L1_BITS_REM + L2_BITS) | |
178 | #else | |
179 | #define V_L1_BITS V_L1_BITS_REM | |
180 | #endif | |
181 | ||
182 | #define P_L1_SIZE ((target_phys_addr_t)1 << P_L1_BITS) | |
183 | #define V_L1_SIZE ((target_ulong)1 << V_L1_BITS) | |
184 | ||
185 | #define P_L1_SHIFT (TARGET_PHYS_ADDR_SPACE_BITS - TARGET_PAGE_BITS - P_L1_BITS) | |
186 | #define V_L1_SHIFT (L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS - V_L1_BITS) | |
187 | ||
83fb7adf | 188 | unsigned long qemu_real_host_page_size; |
83fb7adf FB |
189 | unsigned long qemu_host_page_size; |
190 | unsigned long qemu_host_page_mask; | |
54936004 | 191 | |
5cd2c5b6 RH |
192 | /* This is a multi-level map on the virtual address space. |
193 | The bottom level has pointers to PageDesc. */ | |
194 | static void *l1_map[V_L1_SIZE]; | |
54936004 | 195 | |
e2eef170 | 196 | #if !defined(CONFIG_USER_ONLY) |
41c1b1c9 PB |
197 | typedef struct PhysPageDesc { |
198 | /* offset in host memory of the page + io_index in the low bits */ | |
199 | ram_addr_t phys_offset; | |
200 | ram_addr_t region_offset; | |
201 | } PhysPageDesc; | |
202 | ||
5cd2c5b6 RH |
203 | /* This is a multi-level map on the physical address space. |
204 | The bottom level has pointers to PhysPageDesc. */ | |
205 | static void *l1_phys_map[P_L1_SIZE]; | |
6d9a1304 | 206 | |
e2eef170 | 207 | static void io_mem_init(void); |
62152b8a | 208 | static void memory_map_init(void); |
e2eef170 | 209 | |
33417e70 | 210 | /* io memory support */ |
acbbec5d AK |
211 | CPUWriteMemoryFunc *_io_mem_write[IO_MEM_NB_ENTRIES][4]; |
212 | CPUReadMemoryFunc *_io_mem_read[IO_MEM_NB_ENTRIES][4]; | |
a4193c8a | 213 | void *io_mem_opaque[IO_MEM_NB_ENTRIES]; |
511d2b14 | 214 | static char io_mem_used[IO_MEM_NB_ENTRIES]; |
6658ffb8 PB |
215 | static int io_mem_watch; |
216 | #endif | |
33417e70 | 217 | |
34865134 | 218 | /* log support */ |
1e8b27ca JR |
219 | #ifdef WIN32 |
220 | static const char *logfilename = "qemu.log"; | |
221 | #else | |
d9b630fd | 222 | static const char *logfilename = "/tmp/qemu.log"; |
1e8b27ca | 223 | #endif |
34865134 FB |
224 | FILE *logfile; |
225 | int loglevel; | |
e735b91c | 226 | static int log_append = 0; |
34865134 | 227 | |
e3db7226 | 228 | /* statistics */ |
b3755a91 | 229 | #if !defined(CONFIG_USER_ONLY) |
e3db7226 | 230 | static int tlb_flush_count; |
b3755a91 | 231 | #endif |
e3db7226 FB |
232 | static int tb_flush_count; |
233 | static int tb_phys_invalidate_count; | |
234 | ||
7cb69cae FB |
235 | #ifdef _WIN32 |
236 | static void map_exec(void *addr, long size) | |
237 | { | |
238 | DWORD old_protect; | |
239 | VirtualProtect(addr, size, | |
240 | PAGE_EXECUTE_READWRITE, &old_protect); | |
241 | ||
242 | } | |
243 | #else | |
244 | static void map_exec(void *addr, long size) | |
245 | { | |
4369415f | 246 | unsigned long start, end, page_size; |
7cb69cae | 247 | |
4369415f | 248 | page_size = getpagesize(); |
7cb69cae | 249 | start = (unsigned long)addr; |
4369415f | 250 | start &= ~(page_size - 1); |
7cb69cae FB |
251 | |
252 | end = (unsigned long)addr + size; | |
4369415f FB |
253 | end += page_size - 1; |
254 | end &= ~(page_size - 1); | |
7cb69cae FB |
255 | |
256 | mprotect((void *)start, end - start, | |
257 | PROT_READ | PROT_WRITE | PROT_EXEC); | |
258 | } | |
259 | #endif | |
260 | ||
b346ff46 | 261 | static void page_init(void) |
54936004 | 262 | { |
83fb7adf | 263 | /* NOTE: we can always suppose that qemu_host_page_size >= |
54936004 | 264 | TARGET_PAGE_SIZE */ |
c2b48b69 AL |
265 | #ifdef _WIN32 |
266 | { | |
267 | SYSTEM_INFO system_info; | |
268 | ||
269 | GetSystemInfo(&system_info); | |
270 | qemu_real_host_page_size = system_info.dwPageSize; | |
271 | } | |
272 | #else | |
273 | qemu_real_host_page_size = getpagesize(); | |
274 | #endif | |
83fb7adf FB |
275 | if (qemu_host_page_size == 0) |
276 | qemu_host_page_size = qemu_real_host_page_size; | |
277 | if (qemu_host_page_size < TARGET_PAGE_SIZE) | |
278 | qemu_host_page_size = TARGET_PAGE_SIZE; | |
83fb7adf | 279 | qemu_host_page_mask = ~(qemu_host_page_size - 1); |
50a9569b | 280 | |
2e9a5713 | 281 | #if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY) |
50a9569b | 282 | { |
f01576f1 JL |
283 | #ifdef HAVE_KINFO_GETVMMAP |
284 | struct kinfo_vmentry *freep; | |
285 | int i, cnt; | |
286 | ||
287 | freep = kinfo_getvmmap(getpid(), &cnt); | |
288 | if (freep) { | |
289 | mmap_lock(); | |
290 | for (i = 0; i < cnt; i++) { | |
291 | unsigned long startaddr, endaddr; | |
292 | ||
293 | startaddr = freep[i].kve_start; | |
294 | endaddr = freep[i].kve_end; | |
295 | if (h2g_valid(startaddr)) { | |
296 | startaddr = h2g(startaddr) & TARGET_PAGE_MASK; | |
297 | ||
298 | if (h2g_valid(endaddr)) { | |
299 | endaddr = h2g(endaddr); | |
fd436907 | 300 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); |
f01576f1 JL |
301 | } else { |
302 | #if TARGET_ABI_BITS <= L1_MAP_ADDR_SPACE_BITS | |
303 | endaddr = ~0ul; | |
fd436907 | 304 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); |
f01576f1 JL |
305 | #endif |
306 | } | |
307 | } | |
308 | } | |
309 | free(freep); | |
310 | mmap_unlock(); | |
311 | } | |
312 | #else | |
50a9569b | 313 | FILE *f; |
50a9569b | 314 | |
0776590d | 315 | last_brk = (unsigned long)sbrk(0); |
5cd2c5b6 | 316 | |
fd436907 | 317 | f = fopen("/compat/linux/proc/self/maps", "r"); |
50a9569b | 318 | if (f) { |
5cd2c5b6 RH |
319 | mmap_lock(); |
320 | ||
50a9569b | 321 | do { |
5cd2c5b6 RH |
322 | unsigned long startaddr, endaddr; |
323 | int n; | |
324 | ||
325 | n = fscanf (f, "%lx-%lx %*[^\n]\n", &startaddr, &endaddr); | |
326 | ||
327 | if (n == 2 && h2g_valid(startaddr)) { | |
328 | startaddr = h2g(startaddr) & TARGET_PAGE_MASK; | |
329 | ||
330 | if (h2g_valid(endaddr)) { | |
331 | endaddr = h2g(endaddr); | |
332 | } else { | |
333 | endaddr = ~0ul; | |
334 | } | |
335 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); | |
50a9569b AZ |
336 | } |
337 | } while (!feof(f)); | |
5cd2c5b6 | 338 | |
50a9569b | 339 | fclose(f); |
5cd2c5b6 | 340 | mmap_unlock(); |
50a9569b | 341 | } |
f01576f1 | 342 | #endif |
50a9569b AZ |
343 | } |
344 | #endif | |
54936004 FB |
345 | } |
346 | ||
41c1b1c9 | 347 | static PageDesc *page_find_alloc(tb_page_addr_t index, int alloc) |
54936004 | 348 | { |
41c1b1c9 PB |
349 | PageDesc *pd; |
350 | void **lp; | |
351 | int i; | |
352 | ||
5cd2c5b6 | 353 | #if defined(CONFIG_USER_ONLY) |
7267c094 | 354 | /* We can't use g_malloc because it may recurse into a locked mutex. */ |
5cd2c5b6 RH |
355 | # define ALLOC(P, SIZE) \ |
356 | do { \ | |
357 | P = mmap(NULL, SIZE, PROT_READ | PROT_WRITE, \ | |
358 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \ | |
5cd2c5b6 RH |
359 | } while (0) |
360 | #else | |
361 | # define ALLOC(P, SIZE) \ | |
7267c094 | 362 | do { P = g_malloc0(SIZE); } while (0) |
17e2377a | 363 | #endif |
434929bf | 364 | |
5cd2c5b6 RH |
365 | /* Level 1. Always allocated. */ |
366 | lp = l1_map + ((index >> V_L1_SHIFT) & (V_L1_SIZE - 1)); | |
367 | ||
368 | /* Level 2..N-1. */ | |
369 | for (i = V_L1_SHIFT / L2_BITS - 1; i > 0; i--) { | |
370 | void **p = *lp; | |
371 | ||
372 | if (p == NULL) { | |
373 | if (!alloc) { | |
374 | return NULL; | |
375 | } | |
376 | ALLOC(p, sizeof(void *) * L2_SIZE); | |
377 | *lp = p; | |
17e2377a | 378 | } |
5cd2c5b6 RH |
379 | |
380 | lp = p + ((index >> (i * L2_BITS)) & (L2_SIZE - 1)); | |
381 | } | |
382 | ||
383 | pd = *lp; | |
384 | if (pd == NULL) { | |
385 | if (!alloc) { | |
386 | return NULL; | |
387 | } | |
388 | ALLOC(pd, sizeof(PageDesc) * L2_SIZE); | |
389 | *lp = pd; | |
54936004 | 390 | } |
5cd2c5b6 RH |
391 | |
392 | #undef ALLOC | |
5cd2c5b6 RH |
393 | |
394 | return pd + (index & (L2_SIZE - 1)); | |
54936004 FB |
395 | } |
396 | ||
41c1b1c9 | 397 | static inline PageDesc *page_find(tb_page_addr_t index) |
54936004 | 398 | { |
5cd2c5b6 | 399 | return page_find_alloc(index, 0); |
fd6ce8f6 FB |
400 | } |
401 | ||
6d9a1304 | 402 | #if !defined(CONFIG_USER_ONLY) |
c227f099 | 403 | static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc) |
92e873b9 | 404 | { |
e3f4e2a4 | 405 | PhysPageDesc *pd; |
5cd2c5b6 RH |
406 | void **lp; |
407 | int i; | |
92e873b9 | 408 | |
5cd2c5b6 RH |
409 | /* Level 1. Always allocated. */ |
410 | lp = l1_phys_map + ((index >> P_L1_SHIFT) & (P_L1_SIZE - 1)); | |
108c49b8 | 411 | |
5cd2c5b6 RH |
412 | /* Level 2..N-1. */ |
413 | for (i = P_L1_SHIFT / L2_BITS - 1; i > 0; i--) { | |
414 | void **p = *lp; | |
415 | if (p == NULL) { | |
416 | if (!alloc) { | |
417 | return NULL; | |
418 | } | |
7267c094 | 419 | *lp = p = g_malloc0(sizeof(void *) * L2_SIZE); |
5cd2c5b6 RH |
420 | } |
421 | lp = p + ((index >> (i * L2_BITS)) & (L2_SIZE - 1)); | |
108c49b8 | 422 | } |
5cd2c5b6 | 423 | |
e3f4e2a4 | 424 | pd = *lp; |
5cd2c5b6 | 425 | if (pd == NULL) { |
e3f4e2a4 | 426 | int i; |
5ab97b7f | 427 | int first_index = index & ~(L2_SIZE - 1); |
5cd2c5b6 RH |
428 | |
429 | if (!alloc) { | |
108c49b8 | 430 | return NULL; |
5cd2c5b6 RH |
431 | } |
432 | ||
7267c094 | 433 | *lp = pd = g_malloc(sizeof(PhysPageDesc) * L2_SIZE); |
5cd2c5b6 | 434 | |
67c4d23c | 435 | for (i = 0; i < L2_SIZE; i++) { |
0e0df1e2 | 436 | pd[i].phys_offset = io_mem_unassigned.ram_addr; |
5ab97b7f | 437 | pd[i].region_offset = (first_index + i) << TARGET_PAGE_BITS; |
67c4d23c | 438 | } |
92e873b9 | 439 | } |
5cd2c5b6 RH |
440 | |
441 | return pd + (index & (L2_SIZE - 1)); | |
92e873b9 FB |
442 | } |
443 | ||
f1f6e3b8 | 444 | static inline PhysPageDesc phys_page_find(target_phys_addr_t index) |
92e873b9 | 445 | { |
f1f6e3b8 AK |
446 | PhysPageDesc *p = phys_page_find_alloc(index, 0); |
447 | ||
448 | if (p) { | |
449 | return *p; | |
450 | } else { | |
451 | return (PhysPageDesc) { | |
0e0df1e2 | 452 | .phys_offset = io_mem_unassigned.ram_addr, |
f1f6e3b8 AK |
453 | .region_offset = index << TARGET_PAGE_BITS, |
454 | }; | |
455 | } | |
92e873b9 FB |
456 | } |
457 | ||
c227f099 AL |
458 | static void tlb_protect_code(ram_addr_t ram_addr); |
459 | static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr, | |
3a7d929e | 460 | target_ulong vaddr); |
c8a706fe PB |
461 | #define mmap_lock() do { } while(0) |
462 | #define mmap_unlock() do { } while(0) | |
9fa3e853 | 463 | #endif |
fd6ce8f6 | 464 | |
4369415f FB |
465 | #define DEFAULT_CODE_GEN_BUFFER_SIZE (32 * 1024 * 1024) |
466 | ||
467 | #if defined(CONFIG_USER_ONLY) | |
ccbb4d44 | 468 | /* Currently it is not recommended to allocate big chunks of data in |
4369415f FB |
469 | user mode. It will change when a dedicated libc will be used */ |
470 | #define USE_STATIC_CODE_GEN_BUFFER | |
471 | #endif | |
472 | ||
473 | #ifdef USE_STATIC_CODE_GEN_BUFFER | |
ebf50fb3 AJ |
474 | static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE] |
475 | __attribute__((aligned (CODE_GEN_ALIGN))); | |
4369415f FB |
476 | #endif |
477 | ||
8fcd3692 | 478 | static void code_gen_alloc(unsigned long tb_size) |
26a5f13b | 479 | { |
4369415f FB |
480 | #ifdef USE_STATIC_CODE_GEN_BUFFER |
481 | code_gen_buffer = static_code_gen_buffer; | |
482 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; | |
483 | map_exec(code_gen_buffer, code_gen_buffer_size); | |
484 | #else | |
26a5f13b FB |
485 | code_gen_buffer_size = tb_size; |
486 | if (code_gen_buffer_size == 0) { | |
4369415f | 487 | #if defined(CONFIG_USER_ONLY) |
4369415f FB |
488 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; |
489 | #else | |
ccbb4d44 | 490 | /* XXX: needs adjustments */ |
94a6b54f | 491 | code_gen_buffer_size = (unsigned long)(ram_size / 4); |
4369415f | 492 | #endif |
26a5f13b FB |
493 | } |
494 | if (code_gen_buffer_size < MIN_CODE_GEN_BUFFER_SIZE) | |
495 | code_gen_buffer_size = MIN_CODE_GEN_BUFFER_SIZE; | |
496 | /* The code gen buffer location may have constraints depending on | |
497 | the host cpu and OS */ | |
498 | #if defined(__linux__) | |
499 | { | |
500 | int flags; | |
141ac468 BS |
501 | void *start = NULL; |
502 | ||
26a5f13b FB |
503 | flags = MAP_PRIVATE | MAP_ANONYMOUS; |
504 | #if defined(__x86_64__) | |
505 | flags |= MAP_32BIT; | |
506 | /* Cannot map more than that */ | |
507 | if (code_gen_buffer_size > (800 * 1024 * 1024)) | |
508 | code_gen_buffer_size = (800 * 1024 * 1024); | |
141ac468 BS |
509 | #elif defined(__sparc_v9__) |
510 | // Map the buffer below 2G, so we can use direct calls and branches | |
511 | flags |= MAP_FIXED; | |
512 | start = (void *) 0x60000000UL; | |
513 | if (code_gen_buffer_size > (512 * 1024 * 1024)) | |
514 | code_gen_buffer_size = (512 * 1024 * 1024); | |
1cb0661e | 515 | #elif defined(__arm__) |
222f23f5 | 516 | /* Keep the buffer no bigger than 16GB to branch between blocks */ |
1cb0661e AZ |
517 | if (code_gen_buffer_size > 16 * 1024 * 1024) |
518 | code_gen_buffer_size = 16 * 1024 * 1024; | |
eba0b893 RH |
519 | #elif defined(__s390x__) |
520 | /* Map the buffer so that we can use direct calls and branches. */ | |
521 | /* We have a +- 4GB range on the branches; leave some slop. */ | |
522 | if (code_gen_buffer_size > (3ul * 1024 * 1024 * 1024)) { | |
523 | code_gen_buffer_size = 3ul * 1024 * 1024 * 1024; | |
524 | } | |
525 | start = (void *)0x90000000UL; | |
26a5f13b | 526 | #endif |
141ac468 BS |
527 | code_gen_buffer = mmap(start, code_gen_buffer_size, |
528 | PROT_WRITE | PROT_READ | PROT_EXEC, | |
26a5f13b FB |
529 | flags, -1, 0); |
530 | if (code_gen_buffer == MAP_FAILED) { | |
531 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); | |
532 | exit(1); | |
533 | } | |
534 | } | |
cbb608a5 | 535 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \ |
9f4b09a4 TN |
536 | || defined(__DragonFly__) || defined(__OpenBSD__) \ |
537 | || defined(__NetBSD__) | |
06e67a82 AL |
538 | { |
539 | int flags; | |
540 | void *addr = NULL; | |
541 | flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
542 | #if defined(__x86_64__) | |
543 | /* FreeBSD doesn't have MAP_32BIT, use MAP_FIXED and assume | |
544 | * 0x40000000 is free */ | |
545 | flags |= MAP_FIXED; | |
546 | addr = (void *)0x40000000; | |
547 | /* Cannot map more than that */ | |
548 | if (code_gen_buffer_size > (800 * 1024 * 1024)) | |
549 | code_gen_buffer_size = (800 * 1024 * 1024); | |
4cd31ad2 BS |
550 | #elif defined(__sparc_v9__) |
551 | // Map the buffer below 2G, so we can use direct calls and branches | |
552 | flags |= MAP_FIXED; | |
553 | addr = (void *) 0x60000000UL; | |
554 | if (code_gen_buffer_size > (512 * 1024 * 1024)) { | |
555 | code_gen_buffer_size = (512 * 1024 * 1024); | |
556 | } | |
06e67a82 AL |
557 | #endif |
558 | code_gen_buffer = mmap(addr, code_gen_buffer_size, | |
559 | PROT_WRITE | PROT_READ | PROT_EXEC, | |
560 | flags, -1, 0); | |
561 | if (code_gen_buffer == MAP_FAILED) { | |
562 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); | |
563 | exit(1); | |
564 | } | |
565 | } | |
26a5f13b | 566 | #else |
7267c094 | 567 | code_gen_buffer = g_malloc(code_gen_buffer_size); |
26a5f13b FB |
568 | map_exec(code_gen_buffer, code_gen_buffer_size); |
569 | #endif | |
4369415f | 570 | #endif /* !USE_STATIC_CODE_GEN_BUFFER */ |
26a5f13b | 571 | map_exec(code_gen_prologue, sizeof(code_gen_prologue)); |
a884da8a PM |
572 | code_gen_buffer_max_size = code_gen_buffer_size - |
573 | (TCG_MAX_OP_SIZE * OPC_BUF_SIZE); | |
26a5f13b | 574 | code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE; |
7267c094 | 575 | tbs = g_malloc(code_gen_max_blocks * sizeof(TranslationBlock)); |
26a5f13b FB |
576 | } |
577 | ||
578 | /* Must be called before using the QEMU cpus. 'tb_size' is the size | |
579 | (in bytes) allocated to the translation buffer. Zero means default | |
580 | size. */ | |
d5ab9713 | 581 | void tcg_exec_init(unsigned long tb_size) |
26a5f13b | 582 | { |
26a5f13b FB |
583 | cpu_gen_init(); |
584 | code_gen_alloc(tb_size); | |
585 | code_gen_ptr = code_gen_buffer; | |
4369415f | 586 | page_init(); |
9002ec79 RH |
587 | #if !defined(CONFIG_USER_ONLY) || !defined(CONFIG_USE_GUEST_BASE) |
588 | /* There's no guest base to take into account, so go ahead and | |
589 | initialize the prologue now. */ | |
590 | tcg_prologue_init(&tcg_ctx); | |
591 | #endif | |
26a5f13b FB |
592 | } |
593 | ||
d5ab9713 JK |
594 | bool tcg_enabled(void) |
595 | { | |
596 | return code_gen_buffer != NULL; | |
597 | } | |
598 | ||
599 | void cpu_exec_init_all(void) | |
600 | { | |
601 | #if !defined(CONFIG_USER_ONLY) | |
602 | memory_map_init(); | |
603 | io_mem_init(); | |
604 | #endif | |
605 | } | |
606 | ||
9656f324 PB |
607 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
608 | ||
e59fb374 | 609 | static int cpu_common_post_load(void *opaque, int version_id) |
e7f4eff7 JQ |
610 | { |
611 | CPUState *env = opaque; | |
9656f324 | 612 | |
3098dba0 AJ |
613 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
614 | version_id is increased. */ | |
615 | env->interrupt_request &= ~0x01; | |
9656f324 PB |
616 | tlb_flush(env, 1); |
617 | ||
618 | return 0; | |
619 | } | |
e7f4eff7 JQ |
620 | |
621 | static const VMStateDescription vmstate_cpu_common = { | |
622 | .name = "cpu_common", | |
623 | .version_id = 1, | |
624 | .minimum_version_id = 1, | |
625 | .minimum_version_id_old = 1, | |
e7f4eff7 JQ |
626 | .post_load = cpu_common_post_load, |
627 | .fields = (VMStateField []) { | |
628 | VMSTATE_UINT32(halted, CPUState), | |
629 | VMSTATE_UINT32(interrupt_request, CPUState), | |
630 | VMSTATE_END_OF_LIST() | |
631 | } | |
632 | }; | |
9656f324 PB |
633 | #endif |
634 | ||
950f1472 GC |
635 | CPUState *qemu_get_cpu(int cpu) |
636 | { | |
637 | CPUState *env = first_cpu; | |
638 | ||
639 | while (env) { | |
640 | if (env->cpu_index == cpu) | |
641 | break; | |
642 | env = env->next_cpu; | |
643 | } | |
644 | ||
645 | return env; | |
646 | } | |
647 | ||
6a00d601 | 648 | void cpu_exec_init(CPUState *env) |
fd6ce8f6 | 649 | { |
6a00d601 FB |
650 | CPUState **penv; |
651 | int cpu_index; | |
652 | ||
c2764719 PB |
653 | #if defined(CONFIG_USER_ONLY) |
654 | cpu_list_lock(); | |
655 | #endif | |
6a00d601 FB |
656 | env->next_cpu = NULL; |
657 | penv = &first_cpu; | |
658 | cpu_index = 0; | |
659 | while (*penv != NULL) { | |
1e9fa730 | 660 | penv = &(*penv)->next_cpu; |
6a00d601 FB |
661 | cpu_index++; |
662 | } | |
663 | env->cpu_index = cpu_index; | |
268a362c | 664 | env->numa_node = 0; |
72cf2d4f BS |
665 | QTAILQ_INIT(&env->breakpoints); |
666 | QTAILQ_INIT(&env->watchpoints); | |
dc7a09cf JK |
667 | #ifndef CONFIG_USER_ONLY |
668 | env->thread_id = qemu_get_thread_id(); | |
669 | #endif | |
6a00d601 | 670 | *penv = env; |
c2764719 PB |
671 | #if defined(CONFIG_USER_ONLY) |
672 | cpu_list_unlock(); | |
673 | #endif | |
b3c7724c | 674 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
0be71e32 AW |
675 | vmstate_register(NULL, cpu_index, &vmstate_cpu_common, env); |
676 | register_savevm(NULL, "cpu", cpu_index, CPU_SAVE_VERSION, | |
b3c7724c PB |
677 | cpu_save, cpu_load, env); |
678 | #endif | |
fd6ce8f6 FB |
679 | } |
680 | ||
d1a1eb74 TG |
681 | /* Allocate a new translation block. Flush the translation buffer if |
682 | too many translation blocks or too much generated code. */ | |
683 | static TranslationBlock *tb_alloc(target_ulong pc) | |
684 | { | |
685 | TranslationBlock *tb; | |
686 | ||
687 | if (nb_tbs >= code_gen_max_blocks || | |
688 | (code_gen_ptr - code_gen_buffer) >= code_gen_buffer_max_size) | |
689 | return NULL; | |
690 | tb = &tbs[nb_tbs++]; | |
691 | tb->pc = pc; | |
692 | tb->cflags = 0; | |
693 | return tb; | |
694 | } | |
695 | ||
696 | void tb_free(TranslationBlock *tb) | |
697 | { | |
698 | /* In practice this is mostly used for single use temporary TB | |
699 | Ignore the hard cases and just back up if this TB happens to | |
700 | be the last one generated. */ | |
701 | if (nb_tbs > 0 && tb == &tbs[nb_tbs - 1]) { | |
702 | code_gen_ptr = tb->tc_ptr; | |
703 | nb_tbs--; | |
704 | } | |
705 | } | |
706 | ||
9fa3e853 FB |
707 | static inline void invalidate_page_bitmap(PageDesc *p) |
708 | { | |
709 | if (p->code_bitmap) { | |
7267c094 | 710 | g_free(p->code_bitmap); |
9fa3e853 FB |
711 | p->code_bitmap = NULL; |
712 | } | |
713 | p->code_write_count = 0; | |
714 | } | |
715 | ||
5cd2c5b6 RH |
716 | /* Set to NULL all the 'first_tb' fields in all PageDescs. */ |
717 | ||
718 | static void page_flush_tb_1 (int level, void **lp) | |
fd6ce8f6 | 719 | { |
5cd2c5b6 | 720 | int i; |
fd6ce8f6 | 721 | |
5cd2c5b6 RH |
722 | if (*lp == NULL) { |
723 | return; | |
724 | } | |
725 | if (level == 0) { | |
726 | PageDesc *pd = *lp; | |
7296abac | 727 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
728 | pd[i].first_tb = NULL; |
729 | invalidate_page_bitmap(pd + i); | |
fd6ce8f6 | 730 | } |
5cd2c5b6 RH |
731 | } else { |
732 | void **pp = *lp; | |
7296abac | 733 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
734 | page_flush_tb_1 (level - 1, pp + i); |
735 | } | |
736 | } | |
737 | } | |
738 | ||
739 | static void page_flush_tb(void) | |
740 | { | |
741 | int i; | |
742 | for (i = 0; i < V_L1_SIZE; i++) { | |
743 | page_flush_tb_1(V_L1_SHIFT / L2_BITS - 1, l1_map + i); | |
fd6ce8f6 FB |
744 | } |
745 | } | |
746 | ||
747 | /* flush all the translation blocks */ | |
d4e8164f | 748 | /* XXX: tb_flush is currently not thread safe */ |
6a00d601 | 749 | void tb_flush(CPUState *env1) |
fd6ce8f6 | 750 | { |
6a00d601 | 751 | CPUState *env; |
0124311e | 752 | #if defined(DEBUG_FLUSH) |
ab3d1727 BS |
753 | printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n", |
754 | (unsigned long)(code_gen_ptr - code_gen_buffer), | |
755 | nb_tbs, nb_tbs > 0 ? | |
756 | ((unsigned long)(code_gen_ptr - code_gen_buffer)) / nb_tbs : 0); | |
fd6ce8f6 | 757 | #endif |
26a5f13b | 758 | if ((unsigned long)(code_gen_ptr - code_gen_buffer) > code_gen_buffer_size) |
a208e54a PB |
759 | cpu_abort(env1, "Internal error: code buffer overflow\n"); |
760 | ||
fd6ce8f6 | 761 | nb_tbs = 0; |
3b46e624 | 762 | |
6a00d601 FB |
763 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
764 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); | |
765 | } | |
9fa3e853 | 766 | |
8a8a608f | 767 | memset (tb_phys_hash, 0, CODE_GEN_PHYS_HASH_SIZE * sizeof (void *)); |
fd6ce8f6 | 768 | page_flush_tb(); |
9fa3e853 | 769 | |
fd6ce8f6 | 770 | code_gen_ptr = code_gen_buffer; |
d4e8164f FB |
771 | /* XXX: flush processor icache at this point if cache flush is |
772 | expensive */ | |
e3db7226 | 773 | tb_flush_count++; |
fd6ce8f6 FB |
774 | } |
775 | ||
776 | #ifdef DEBUG_TB_CHECK | |
777 | ||
bc98a7ef | 778 | static void tb_invalidate_check(target_ulong address) |
fd6ce8f6 FB |
779 | { |
780 | TranslationBlock *tb; | |
781 | int i; | |
782 | address &= TARGET_PAGE_MASK; | |
99773bd4 PB |
783 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
784 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { | |
fd6ce8f6 FB |
785 | if (!(address + TARGET_PAGE_SIZE <= tb->pc || |
786 | address >= tb->pc + tb->size)) { | |
0bf9e31a BS |
787 | printf("ERROR invalidate: address=" TARGET_FMT_lx |
788 | " PC=%08lx size=%04x\n", | |
99773bd4 | 789 | address, (long)tb->pc, tb->size); |
fd6ce8f6 FB |
790 | } |
791 | } | |
792 | } | |
793 | } | |
794 | ||
795 | /* verify that all the pages have correct rights for code */ | |
796 | static void tb_page_check(void) | |
797 | { | |
798 | TranslationBlock *tb; | |
799 | int i, flags1, flags2; | |
3b46e624 | 800 | |
99773bd4 PB |
801 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
802 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { | |
fd6ce8f6 FB |
803 | flags1 = page_get_flags(tb->pc); |
804 | flags2 = page_get_flags(tb->pc + tb->size - 1); | |
805 | if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) { | |
806 | printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n", | |
99773bd4 | 807 | (long)tb->pc, tb->size, flags1, flags2); |
fd6ce8f6 FB |
808 | } |
809 | } | |
810 | } | |
811 | } | |
812 | ||
813 | #endif | |
814 | ||
815 | /* invalidate one TB */ | |
816 | static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb, | |
817 | int next_offset) | |
818 | { | |
819 | TranslationBlock *tb1; | |
820 | for(;;) { | |
821 | tb1 = *ptb; | |
822 | if (tb1 == tb) { | |
823 | *ptb = *(TranslationBlock **)((char *)tb1 + next_offset); | |
824 | break; | |
825 | } | |
826 | ptb = (TranslationBlock **)((char *)tb1 + next_offset); | |
827 | } | |
828 | } | |
829 | ||
9fa3e853 FB |
830 | static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb) |
831 | { | |
832 | TranslationBlock *tb1; | |
833 | unsigned int n1; | |
834 | ||
835 | for(;;) { | |
836 | tb1 = *ptb; | |
837 | n1 = (long)tb1 & 3; | |
838 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
839 | if (tb1 == tb) { | |
840 | *ptb = tb1->page_next[n1]; | |
841 | break; | |
842 | } | |
843 | ptb = &tb1->page_next[n1]; | |
844 | } | |
845 | } | |
846 | ||
d4e8164f FB |
847 | static inline void tb_jmp_remove(TranslationBlock *tb, int n) |
848 | { | |
849 | TranslationBlock *tb1, **ptb; | |
850 | unsigned int n1; | |
851 | ||
852 | ptb = &tb->jmp_next[n]; | |
853 | tb1 = *ptb; | |
854 | if (tb1) { | |
855 | /* find tb(n) in circular list */ | |
856 | for(;;) { | |
857 | tb1 = *ptb; | |
858 | n1 = (long)tb1 & 3; | |
859 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
860 | if (n1 == n && tb1 == tb) | |
861 | break; | |
862 | if (n1 == 2) { | |
863 | ptb = &tb1->jmp_first; | |
864 | } else { | |
865 | ptb = &tb1->jmp_next[n1]; | |
866 | } | |
867 | } | |
868 | /* now we can suppress tb(n) from the list */ | |
869 | *ptb = tb->jmp_next[n]; | |
870 | ||
871 | tb->jmp_next[n] = NULL; | |
872 | } | |
873 | } | |
874 | ||
875 | /* reset the jump entry 'n' of a TB so that it is not chained to | |
876 | another TB */ | |
877 | static inline void tb_reset_jump(TranslationBlock *tb, int n) | |
878 | { | |
879 | tb_set_jmp_target(tb, n, (unsigned long)(tb->tc_ptr + tb->tb_next_offset[n])); | |
880 | } | |
881 | ||
41c1b1c9 | 882 | void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr) |
fd6ce8f6 | 883 | { |
6a00d601 | 884 | CPUState *env; |
8a40a180 | 885 | PageDesc *p; |
d4e8164f | 886 | unsigned int h, n1; |
41c1b1c9 | 887 | tb_page_addr_t phys_pc; |
8a40a180 | 888 | TranslationBlock *tb1, *tb2; |
3b46e624 | 889 | |
8a40a180 FB |
890 | /* remove the TB from the hash list */ |
891 | phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
892 | h = tb_phys_hash_func(phys_pc); | |
5fafdf24 | 893 | tb_remove(&tb_phys_hash[h], tb, |
8a40a180 FB |
894 | offsetof(TranslationBlock, phys_hash_next)); |
895 | ||
896 | /* remove the TB from the page list */ | |
897 | if (tb->page_addr[0] != page_addr) { | |
898 | p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS); | |
899 | tb_page_remove(&p->first_tb, tb); | |
900 | invalidate_page_bitmap(p); | |
901 | } | |
902 | if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) { | |
903 | p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS); | |
904 | tb_page_remove(&p->first_tb, tb); | |
905 | invalidate_page_bitmap(p); | |
906 | } | |
907 | ||
36bdbe54 | 908 | tb_invalidated_flag = 1; |
59817ccb | 909 | |
fd6ce8f6 | 910 | /* remove the TB from the hash list */ |
8a40a180 | 911 | h = tb_jmp_cache_hash_func(tb->pc); |
6a00d601 FB |
912 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
913 | if (env->tb_jmp_cache[h] == tb) | |
914 | env->tb_jmp_cache[h] = NULL; | |
915 | } | |
d4e8164f FB |
916 | |
917 | /* suppress this TB from the two jump lists */ | |
918 | tb_jmp_remove(tb, 0); | |
919 | tb_jmp_remove(tb, 1); | |
920 | ||
921 | /* suppress any remaining jumps to this TB */ | |
922 | tb1 = tb->jmp_first; | |
923 | for(;;) { | |
924 | n1 = (long)tb1 & 3; | |
925 | if (n1 == 2) | |
926 | break; | |
927 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
928 | tb2 = tb1->jmp_next[n1]; | |
929 | tb_reset_jump(tb1, n1); | |
930 | tb1->jmp_next[n1] = NULL; | |
931 | tb1 = tb2; | |
932 | } | |
933 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); /* fail safe */ | |
9fa3e853 | 934 | |
e3db7226 | 935 | tb_phys_invalidate_count++; |
9fa3e853 FB |
936 | } |
937 | ||
938 | static inline void set_bits(uint8_t *tab, int start, int len) | |
939 | { | |
940 | int end, mask, end1; | |
941 | ||
942 | end = start + len; | |
943 | tab += start >> 3; | |
944 | mask = 0xff << (start & 7); | |
945 | if ((start & ~7) == (end & ~7)) { | |
946 | if (start < end) { | |
947 | mask &= ~(0xff << (end & 7)); | |
948 | *tab |= mask; | |
949 | } | |
950 | } else { | |
951 | *tab++ |= mask; | |
952 | start = (start + 8) & ~7; | |
953 | end1 = end & ~7; | |
954 | while (start < end1) { | |
955 | *tab++ = 0xff; | |
956 | start += 8; | |
957 | } | |
958 | if (start < end) { | |
959 | mask = ~(0xff << (end & 7)); | |
960 | *tab |= mask; | |
961 | } | |
962 | } | |
963 | } | |
964 | ||
965 | static void build_page_bitmap(PageDesc *p) | |
966 | { | |
967 | int n, tb_start, tb_end; | |
968 | TranslationBlock *tb; | |
3b46e624 | 969 | |
7267c094 | 970 | p->code_bitmap = g_malloc0(TARGET_PAGE_SIZE / 8); |
9fa3e853 FB |
971 | |
972 | tb = p->first_tb; | |
973 | while (tb != NULL) { | |
974 | n = (long)tb & 3; | |
975 | tb = (TranslationBlock *)((long)tb & ~3); | |
976 | /* NOTE: this is subtle as a TB may span two physical pages */ | |
977 | if (n == 0) { | |
978 | /* NOTE: tb_end may be after the end of the page, but | |
979 | it is not a problem */ | |
980 | tb_start = tb->pc & ~TARGET_PAGE_MASK; | |
981 | tb_end = tb_start + tb->size; | |
982 | if (tb_end > TARGET_PAGE_SIZE) | |
983 | tb_end = TARGET_PAGE_SIZE; | |
984 | } else { | |
985 | tb_start = 0; | |
986 | tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
987 | } | |
988 | set_bits(p->code_bitmap, tb_start, tb_end - tb_start); | |
989 | tb = tb->page_next[n]; | |
990 | } | |
991 | } | |
992 | ||
2e70f6ef PB |
993 | TranslationBlock *tb_gen_code(CPUState *env, |
994 | target_ulong pc, target_ulong cs_base, | |
995 | int flags, int cflags) | |
d720b93d FB |
996 | { |
997 | TranslationBlock *tb; | |
998 | uint8_t *tc_ptr; | |
41c1b1c9 PB |
999 | tb_page_addr_t phys_pc, phys_page2; |
1000 | target_ulong virt_page2; | |
d720b93d FB |
1001 | int code_gen_size; |
1002 | ||
41c1b1c9 | 1003 | phys_pc = get_page_addr_code(env, pc); |
c27004ec | 1004 | tb = tb_alloc(pc); |
d720b93d FB |
1005 | if (!tb) { |
1006 | /* flush must be done */ | |
1007 | tb_flush(env); | |
1008 | /* cannot fail at this point */ | |
c27004ec | 1009 | tb = tb_alloc(pc); |
2e70f6ef PB |
1010 | /* Don't forget to invalidate previous TB info. */ |
1011 | tb_invalidated_flag = 1; | |
d720b93d FB |
1012 | } |
1013 | tc_ptr = code_gen_ptr; | |
1014 | tb->tc_ptr = tc_ptr; | |
1015 | tb->cs_base = cs_base; | |
1016 | tb->flags = flags; | |
1017 | tb->cflags = cflags; | |
d07bde88 | 1018 | cpu_gen_code(env, tb, &code_gen_size); |
d720b93d | 1019 | code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); |
3b46e624 | 1020 | |
d720b93d | 1021 | /* check next page if needed */ |
c27004ec | 1022 | virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; |
d720b93d | 1023 | phys_page2 = -1; |
c27004ec | 1024 | if ((pc & TARGET_PAGE_MASK) != virt_page2) { |
41c1b1c9 | 1025 | phys_page2 = get_page_addr_code(env, virt_page2); |
d720b93d | 1026 | } |
41c1b1c9 | 1027 | tb_link_page(tb, phys_pc, phys_page2); |
2e70f6ef | 1028 | return tb; |
d720b93d | 1029 | } |
3b46e624 | 1030 | |
9fa3e853 FB |
1031 | /* invalidate all TBs which intersect with the target physical page |
1032 | starting in range [start;end[. NOTE: start and end must refer to | |
d720b93d FB |
1033 | the same physical page. 'is_cpu_write_access' should be true if called |
1034 | from a real cpu write access: the virtual CPU will exit the current | |
1035 | TB if code is modified inside this TB. */ | |
41c1b1c9 | 1036 | void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end, |
d720b93d FB |
1037 | int is_cpu_write_access) |
1038 | { | |
6b917547 | 1039 | TranslationBlock *tb, *tb_next, *saved_tb; |
d720b93d | 1040 | CPUState *env = cpu_single_env; |
41c1b1c9 | 1041 | tb_page_addr_t tb_start, tb_end; |
6b917547 AL |
1042 | PageDesc *p; |
1043 | int n; | |
1044 | #ifdef TARGET_HAS_PRECISE_SMC | |
1045 | int current_tb_not_found = is_cpu_write_access; | |
1046 | TranslationBlock *current_tb = NULL; | |
1047 | int current_tb_modified = 0; | |
1048 | target_ulong current_pc = 0; | |
1049 | target_ulong current_cs_base = 0; | |
1050 | int current_flags = 0; | |
1051 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
9fa3e853 FB |
1052 | |
1053 | p = page_find(start >> TARGET_PAGE_BITS); | |
5fafdf24 | 1054 | if (!p) |
9fa3e853 | 1055 | return; |
5fafdf24 | 1056 | if (!p->code_bitmap && |
d720b93d FB |
1057 | ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && |
1058 | is_cpu_write_access) { | |
9fa3e853 FB |
1059 | /* build code bitmap */ |
1060 | build_page_bitmap(p); | |
1061 | } | |
1062 | ||
1063 | /* we remove all the TBs in the range [start, end[ */ | |
1064 | /* XXX: see if in some cases it could be faster to invalidate all the code */ | |
1065 | tb = p->first_tb; | |
1066 | while (tb != NULL) { | |
1067 | n = (long)tb & 3; | |
1068 | tb = (TranslationBlock *)((long)tb & ~3); | |
1069 | tb_next = tb->page_next[n]; | |
1070 | /* NOTE: this is subtle as a TB may span two physical pages */ | |
1071 | if (n == 0) { | |
1072 | /* NOTE: tb_end may be after the end of the page, but | |
1073 | it is not a problem */ | |
1074 | tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
1075 | tb_end = tb_start + tb->size; | |
1076 | } else { | |
1077 | tb_start = tb->page_addr[1]; | |
1078 | tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
1079 | } | |
1080 | if (!(tb_end <= start || tb_start >= end)) { | |
d720b93d FB |
1081 | #ifdef TARGET_HAS_PRECISE_SMC |
1082 | if (current_tb_not_found) { | |
1083 | current_tb_not_found = 0; | |
1084 | current_tb = NULL; | |
2e70f6ef | 1085 | if (env->mem_io_pc) { |
d720b93d | 1086 | /* now we have a real cpu fault */ |
2e70f6ef | 1087 | current_tb = tb_find_pc(env->mem_io_pc); |
d720b93d FB |
1088 | } |
1089 | } | |
1090 | if (current_tb == tb && | |
2e70f6ef | 1091 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
d720b93d FB |
1092 | /* If we are modifying the current TB, we must stop |
1093 | its execution. We could be more precise by checking | |
1094 | that the modification is after the current PC, but it | |
1095 | would require a specialized function to partially | |
1096 | restore the CPU state */ | |
3b46e624 | 1097 | |
d720b93d | 1098 | current_tb_modified = 1; |
618ba8e6 | 1099 | cpu_restore_state(current_tb, env, env->mem_io_pc); |
6b917547 AL |
1100 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
1101 | ¤t_flags); | |
d720b93d FB |
1102 | } |
1103 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
6f5a9f7e FB |
1104 | /* we need to do that to handle the case where a signal |
1105 | occurs while doing tb_phys_invalidate() */ | |
1106 | saved_tb = NULL; | |
1107 | if (env) { | |
1108 | saved_tb = env->current_tb; | |
1109 | env->current_tb = NULL; | |
1110 | } | |
9fa3e853 | 1111 | tb_phys_invalidate(tb, -1); |
6f5a9f7e FB |
1112 | if (env) { |
1113 | env->current_tb = saved_tb; | |
1114 | if (env->interrupt_request && env->current_tb) | |
1115 | cpu_interrupt(env, env->interrupt_request); | |
1116 | } | |
9fa3e853 FB |
1117 | } |
1118 | tb = tb_next; | |
1119 | } | |
1120 | #if !defined(CONFIG_USER_ONLY) | |
1121 | /* if no code remaining, no need to continue to use slow writes */ | |
1122 | if (!p->first_tb) { | |
1123 | invalidate_page_bitmap(p); | |
d720b93d | 1124 | if (is_cpu_write_access) { |
2e70f6ef | 1125 | tlb_unprotect_code_phys(env, start, env->mem_io_vaddr); |
d720b93d FB |
1126 | } |
1127 | } | |
1128 | #endif | |
1129 | #ifdef TARGET_HAS_PRECISE_SMC | |
1130 | if (current_tb_modified) { | |
1131 | /* we generate a block containing just the instruction | |
1132 | modifying the memory. It will ensure that it cannot modify | |
1133 | itself */ | |
ea1c1802 | 1134 | env->current_tb = NULL; |
2e70f6ef | 1135 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
d720b93d | 1136 | cpu_resume_from_signal(env, NULL); |
9fa3e853 | 1137 | } |
fd6ce8f6 | 1138 | #endif |
9fa3e853 | 1139 | } |
fd6ce8f6 | 1140 | |
9fa3e853 | 1141 | /* len must be <= 8 and start must be a multiple of len */ |
41c1b1c9 | 1142 | static inline void tb_invalidate_phys_page_fast(tb_page_addr_t start, int len) |
9fa3e853 FB |
1143 | { |
1144 | PageDesc *p; | |
1145 | int offset, b; | |
59817ccb | 1146 | #if 0 |
a4193c8a | 1147 | if (1) { |
93fcfe39 AL |
1148 | qemu_log("modifying code at 0x%x size=%d EIP=%x PC=%08x\n", |
1149 | cpu_single_env->mem_io_vaddr, len, | |
1150 | cpu_single_env->eip, | |
1151 | cpu_single_env->eip + (long)cpu_single_env->segs[R_CS].base); | |
59817ccb FB |
1152 | } |
1153 | #endif | |
9fa3e853 | 1154 | p = page_find(start >> TARGET_PAGE_BITS); |
5fafdf24 | 1155 | if (!p) |
9fa3e853 FB |
1156 | return; |
1157 | if (p->code_bitmap) { | |
1158 | offset = start & ~TARGET_PAGE_MASK; | |
1159 | b = p->code_bitmap[offset >> 3] >> (offset & 7); | |
1160 | if (b & ((1 << len) - 1)) | |
1161 | goto do_invalidate; | |
1162 | } else { | |
1163 | do_invalidate: | |
d720b93d | 1164 | tb_invalidate_phys_page_range(start, start + len, 1); |
9fa3e853 FB |
1165 | } |
1166 | } | |
1167 | ||
9fa3e853 | 1168 | #if !defined(CONFIG_SOFTMMU) |
41c1b1c9 | 1169 | static void tb_invalidate_phys_page(tb_page_addr_t addr, |
d720b93d | 1170 | unsigned long pc, void *puc) |
9fa3e853 | 1171 | { |
6b917547 | 1172 | TranslationBlock *tb; |
9fa3e853 | 1173 | PageDesc *p; |
6b917547 | 1174 | int n; |
d720b93d | 1175 | #ifdef TARGET_HAS_PRECISE_SMC |
6b917547 | 1176 | TranslationBlock *current_tb = NULL; |
d720b93d | 1177 | CPUState *env = cpu_single_env; |
6b917547 AL |
1178 | int current_tb_modified = 0; |
1179 | target_ulong current_pc = 0; | |
1180 | target_ulong current_cs_base = 0; | |
1181 | int current_flags = 0; | |
d720b93d | 1182 | #endif |
9fa3e853 FB |
1183 | |
1184 | addr &= TARGET_PAGE_MASK; | |
1185 | p = page_find(addr >> TARGET_PAGE_BITS); | |
5fafdf24 | 1186 | if (!p) |
9fa3e853 FB |
1187 | return; |
1188 | tb = p->first_tb; | |
d720b93d FB |
1189 | #ifdef TARGET_HAS_PRECISE_SMC |
1190 | if (tb && pc != 0) { | |
1191 | current_tb = tb_find_pc(pc); | |
1192 | } | |
1193 | #endif | |
9fa3e853 FB |
1194 | while (tb != NULL) { |
1195 | n = (long)tb & 3; | |
1196 | tb = (TranslationBlock *)((long)tb & ~3); | |
d720b93d FB |
1197 | #ifdef TARGET_HAS_PRECISE_SMC |
1198 | if (current_tb == tb && | |
2e70f6ef | 1199 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
d720b93d FB |
1200 | /* If we are modifying the current TB, we must stop |
1201 | its execution. We could be more precise by checking | |
1202 | that the modification is after the current PC, but it | |
1203 | would require a specialized function to partially | |
1204 | restore the CPU state */ | |
3b46e624 | 1205 | |
d720b93d | 1206 | current_tb_modified = 1; |
618ba8e6 | 1207 | cpu_restore_state(current_tb, env, pc); |
6b917547 AL |
1208 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
1209 | ¤t_flags); | |
d720b93d FB |
1210 | } |
1211 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
9fa3e853 FB |
1212 | tb_phys_invalidate(tb, addr); |
1213 | tb = tb->page_next[n]; | |
1214 | } | |
fd6ce8f6 | 1215 | p->first_tb = NULL; |
d720b93d FB |
1216 | #ifdef TARGET_HAS_PRECISE_SMC |
1217 | if (current_tb_modified) { | |
1218 | /* we generate a block containing just the instruction | |
1219 | modifying the memory. It will ensure that it cannot modify | |
1220 | itself */ | |
ea1c1802 | 1221 | env->current_tb = NULL; |
2e70f6ef | 1222 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
d720b93d FB |
1223 | cpu_resume_from_signal(env, puc); |
1224 | } | |
1225 | #endif | |
fd6ce8f6 | 1226 | } |
9fa3e853 | 1227 | #endif |
fd6ce8f6 FB |
1228 | |
1229 | /* add the tb in the target page and protect it if necessary */ | |
5fafdf24 | 1230 | static inline void tb_alloc_page(TranslationBlock *tb, |
41c1b1c9 | 1231 | unsigned int n, tb_page_addr_t page_addr) |
fd6ce8f6 FB |
1232 | { |
1233 | PageDesc *p; | |
4429ab44 JQ |
1234 | #ifndef CONFIG_USER_ONLY |
1235 | bool page_already_protected; | |
1236 | #endif | |
9fa3e853 FB |
1237 | |
1238 | tb->page_addr[n] = page_addr; | |
5cd2c5b6 | 1239 | p = page_find_alloc(page_addr >> TARGET_PAGE_BITS, 1); |
9fa3e853 | 1240 | tb->page_next[n] = p->first_tb; |
4429ab44 JQ |
1241 | #ifndef CONFIG_USER_ONLY |
1242 | page_already_protected = p->first_tb != NULL; | |
1243 | #endif | |
9fa3e853 FB |
1244 | p->first_tb = (TranslationBlock *)((long)tb | n); |
1245 | invalidate_page_bitmap(p); | |
fd6ce8f6 | 1246 | |
107db443 | 1247 | #if defined(TARGET_HAS_SMC) || 1 |
d720b93d | 1248 | |
9fa3e853 | 1249 | #if defined(CONFIG_USER_ONLY) |
fd6ce8f6 | 1250 | if (p->flags & PAGE_WRITE) { |
53a5960a PB |
1251 | target_ulong addr; |
1252 | PageDesc *p2; | |
9fa3e853 FB |
1253 | int prot; |
1254 | ||
fd6ce8f6 FB |
1255 | /* force the host page as non writable (writes will have a |
1256 | page fault + mprotect overhead) */ | |
53a5960a | 1257 | page_addr &= qemu_host_page_mask; |
fd6ce8f6 | 1258 | prot = 0; |
53a5960a PB |
1259 | for(addr = page_addr; addr < page_addr + qemu_host_page_size; |
1260 | addr += TARGET_PAGE_SIZE) { | |
1261 | ||
1262 | p2 = page_find (addr >> TARGET_PAGE_BITS); | |
1263 | if (!p2) | |
1264 | continue; | |
1265 | prot |= p2->flags; | |
1266 | p2->flags &= ~PAGE_WRITE; | |
53a5960a | 1267 | } |
5fafdf24 | 1268 | mprotect(g2h(page_addr), qemu_host_page_size, |
fd6ce8f6 FB |
1269 | (prot & PAGE_BITS) & ~PAGE_WRITE); |
1270 | #ifdef DEBUG_TB_INVALIDATE | |
ab3d1727 | 1271 | printf("protecting code page: 0x" TARGET_FMT_lx "\n", |
53a5960a | 1272 | page_addr); |
fd6ce8f6 | 1273 | #endif |
fd6ce8f6 | 1274 | } |
9fa3e853 FB |
1275 | #else |
1276 | /* if some code is already present, then the pages are already | |
1277 | protected. So we handle the case where only the first TB is | |
1278 | allocated in a physical page */ | |
4429ab44 | 1279 | if (!page_already_protected) { |
6a00d601 | 1280 | tlb_protect_code(page_addr); |
9fa3e853 FB |
1281 | } |
1282 | #endif | |
d720b93d FB |
1283 | |
1284 | #endif /* TARGET_HAS_SMC */ | |
fd6ce8f6 FB |
1285 | } |
1286 | ||
9fa3e853 FB |
1287 | /* add a new TB and link it to the physical page tables. phys_page2 is |
1288 | (-1) to indicate that only one page contains the TB. */ | |
41c1b1c9 PB |
1289 | void tb_link_page(TranslationBlock *tb, |
1290 | tb_page_addr_t phys_pc, tb_page_addr_t phys_page2) | |
d4e8164f | 1291 | { |
9fa3e853 FB |
1292 | unsigned int h; |
1293 | TranslationBlock **ptb; | |
1294 | ||
c8a706fe PB |
1295 | /* Grab the mmap lock to stop another thread invalidating this TB |
1296 | before we are done. */ | |
1297 | mmap_lock(); | |
9fa3e853 FB |
1298 | /* add in the physical hash table */ |
1299 | h = tb_phys_hash_func(phys_pc); | |
1300 | ptb = &tb_phys_hash[h]; | |
1301 | tb->phys_hash_next = *ptb; | |
1302 | *ptb = tb; | |
fd6ce8f6 FB |
1303 | |
1304 | /* add in the page list */ | |
9fa3e853 FB |
1305 | tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK); |
1306 | if (phys_page2 != -1) | |
1307 | tb_alloc_page(tb, 1, phys_page2); | |
1308 | else | |
1309 | tb->page_addr[1] = -1; | |
9fa3e853 | 1310 | |
d4e8164f FB |
1311 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); |
1312 | tb->jmp_next[0] = NULL; | |
1313 | tb->jmp_next[1] = NULL; | |
1314 | ||
1315 | /* init original jump addresses */ | |
1316 | if (tb->tb_next_offset[0] != 0xffff) | |
1317 | tb_reset_jump(tb, 0); | |
1318 | if (tb->tb_next_offset[1] != 0xffff) | |
1319 | tb_reset_jump(tb, 1); | |
8a40a180 FB |
1320 | |
1321 | #ifdef DEBUG_TB_CHECK | |
1322 | tb_page_check(); | |
1323 | #endif | |
c8a706fe | 1324 | mmap_unlock(); |
fd6ce8f6 FB |
1325 | } |
1326 | ||
9fa3e853 FB |
1327 | /* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr < |
1328 | tb[1].tc_ptr. Return NULL if not found */ | |
1329 | TranslationBlock *tb_find_pc(unsigned long tc_ptr) | |
fd6ce8f6 | 1330 | { |
9fa3e853 FB |
1331 | int m_min, m_max, m; |
1332 | unsigned long v; | |
1333 | TranslationBlock *tb; | |
a513fe19 FB |
1334 | |
1335 | if (nb_tbs <= 0) | |
1336 | return NULL; | |
1337 | if (tc_ptr < (unsigned long)code_gen_buffer || | |
1338 | tc_ptr >= (unsigned long)code_gen_ptr) | |
1339 | return NULL; | |
1340 | /* binary search (cf Knuth) */ | |
1341 | m_min = 0; | |
1342 | m_max = nb_tbs - 1; | |
1343 | while (m_min <= m_max) { | |
1344 | m = (m_min + m_max) >> 1; | |
1345 | tb = &tbs[m]; | |
1346 | v = (unsigned long)tb->tc_ptr; | |
1347 | if (v == tc_ptr) | |
1348 | return tb; | |
1349 | else if (tc_ptr < v) { | |
1350 | m_max = m - 1; | |
1351 | } else { | |
1352 | m_min = m + 1; | |
1353 | } | |
5fafdf24 | 1354 | } |
a513fe19 FB |
1355 | return &tbs[m_max]; |
1356 | } | |
7501267e | 1357 | |
ea041c0e FB |
1358 | static void tb_reset_jump_recursive(TranslationBlock *tb); |
1359 | ||
1360 | static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n) | |
1361 | { | |
1362 | TranslationBlock *tb1, *tb_next, **ptb; | |
1363 | unsigned int n1; | |
1364 | ||
1365 | tb1 = tb->jmp_next[n]; | |
1366 | if (tb1 != NULL) { | |
1367 | /* find head of list */ | |
1368 | for(;;) { | |
1369 | n1 = (long)tb1 & 3; | |
1370 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
1371 | if (n1 == 2) | |
1372 | break; | |
1373 | tb1 = tb1->jmp_next[n1]; | |
1374 | } | |
1375 | /* we are now sure now that tb jumps to tb1 */ | |
1376 | tb_next = tb1; | |
1377 | ||
1378 | /* remove tb from the jmp_first list */ | |
1379 | ptb = &tb_next->jmp_first; | |
1380 | for(;;) { | |
1381 | tb1 = *ptb; | |
1382 | n1 = (long)tb1 & 3; | |
1383 | tb1 = (TranslationBlock *)((long)tb1 & ~3); | |
1384 | if (n1 == n && tb1 == tb) | |
1385 | break; | |
1386 | ptb = &tb1->jmp_next[n1]; | |
1387 | } | |
1388 | *ptb = tb->jmp_next[n]; | |
1389 | tb->jmp_next[n] = NULL; | |
3b46e624 | 1390 | |
ea041c0e FB |
1391 | /* suppress the jump to next tb in generated code */ |
1392 | tb_reset_jump(tb, n); | |
1393 | ||
0124311e | 1394 | /* suppress jumps in the tb on which we could have jumped */ |
ea041c0e FB |
1395 | tb_reset_jump_recursive(tb_next); |
1396 | } | |
1397 | } | |
1398 | ||
1399 | static void tb_reset_jump_recursive(TranslationBlock *tb) | |
1400 | { | |
1401 | tb_reset_jump_recursive2(tb, 0); | |
1402 | tb_reset_jump_recursive2(tb, 1); | |
1403 | } | |
1404 | ||
1fddef4b | 1405 | #if defined(TARGET_HAS_ICE) |
94df27fd PB |
1406 | #if defined(CONFIG_USER_ONLY) |
1407 | static void breakpoint_invalidate(CPUState *env, target_ulong pc) | |
1408 | { | |
1409 | tb_invalidate_phys_page_range(pc, pc + 1, 0); | |
1410 | } | |
1411 | #else | |
d720b93d FB |
1412 | static void breakpoint_invalidate(CPUState *env, target_ulong pc) |
1413 | { | |
c227f099 | 1414 | target_phys_addr_t addr; |
9b3c35e0 | 1415 | target_ulong pd; |
c227f099 | 1416 | ram_addr_t ram_addr; |
f1f6e3b8 | 1417 | PhysPageDesc p; |
d720b93d | 1418 | |
c2f07f81 PB |
1419 | addr = cpu_get_phys_page_debug(env, pc); |
1420 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 1421 | pd = p.phys_offset; |
c2f07f81 | 1422 | ram_addr = (pd & TARGET_PAGE_MASK) | (pc & ~TARGET_PAGE_MASK); |
706cd4b5 | 1423 | tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0); |
d720b93d | 1424 | } |
c27004ec | 1425 | #endif |
94df27fd | 1426 | #endif /* TARGET_HAS_ICE */ |
d720b93d | 1427 | |
c527ee8f PB |
1428 | #if defined(CONFIG_USER_ONLY) |
1429 | void cpu_watchpoint_remove_all(CPUState *env, int mask) | |
1430 | ||
1431 | { | |
1432 | } | |
1433 | ||
1434 | int cpu_watchpoint_insert(CPUState *env, target_ulong addr, target_ulong len, | |
1435 | int flags, CPUWatchpoint **watchpoint) | |
1436 | { | |
1437 | return -ENOSYS; | |
1438 | } | |
1439 | #else | |
6658ffb8 | 1440 | /* Add a watchpoint. */ |
a1d1bb31 AL |
1441 | int cpu_watchpoint_insert(CPUState *env, target_ulong addr, target_ulong len, |
1442 | int flags, CPUWatchpoint **watchpoint) | |
6658ffb8 | 1443 | { |
b4051334 | 1444 | target_ulong len_mask = ~(len - 1); |
c0ce998e | 1445 | CPUWatchpoint *wp; |
6658ffb8 | 1446 | |
b4051334 AL |
1447 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
1448 | if ((len != 1 && len != 2 && len != 4 && len != 8) || (addr & ~len_mask)) { | |
1449 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " | |
1450 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); | |
1451 | return -EINVAL; | |
1452 | } | |
7267c094 | 1453 | wp = g_malloc(sizeof(*wp)); |
a1d1bb31 AL |
1454 | |
1455 | wp->vaddr = addr; | |
b4051334 | 1456 | wp->len_mask = len_mask; |
a1d1bb31 AL |
1457 | wp->flags = flags; |
1458 | ||
2dc9f411 | 1459 | /* keep all GDB-injected watchpoints in front */ |
c0ce998e | 1460 | if (flags & BP_GDB) |
72cf2d4f | 1461 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
c0ce998e | 1462 | else |
72cf2d4f | 1463 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
6658ffb8 | 1464 | |
6658ffb8 | 1465 | tlb_flush_page(env, addr); |
a1d1bb31 AL |
1466 | |
1467 | if (watchpoint) | |
1468 | *watchpoint = wp; | |
1469 | return 0; | |
6658ffb8 PB |
1470 | } |
1471 | ||
a1d1bb31 AL |
1472 | /* Remove a specific watchpoint. */ |
1473 | int cpu_watchpoint_remove(CPUState *env, target_ulong addr, target_ulong len, | |
1474 | int flags) | |
6658ffb8 | 1475 | { |
b4051334 | 1476 | target_ulong len_mask = ~(len - 1); |
a1d1bb31 | 1477 | CPUWatchpoint *wp; |
6658ffb8 | 1478 | |
72cf2d4f | 1479 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 | 1480 | if (addr == wp->vaddr && len_mask == wp->len_mask |
6e140f28 | 1481 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
a1d1bb31 | 1482 | cpu_watchpoint_remove_by_ref(env, wp); |
6658ffb8 PB |
1483 | return 0; |
1484 | } | |
1485 | } | |
a1d1bb31 | 1486 | return -ENOENT; |
6658ffb8 PB |
1487 | } |
1488 | ||
a1d1bb31 AL |
1489 | /* Remove a specific watchpoint by reference. */ |
1490 | void cpu_watchpoint_remove_by_ref(CPUState *env, CPUWatchpoint *watchpoint) | |
1491 | { | |
72cf2d4f | 1492 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
7d03f82f | 1493 | |
a1d1bb31 AL |
1494 | tlb_flush_page(env, watchpoint->vaddr); |
1495 | ||
7267c094 | 1496 | g_free(watchpoint); |
a1d1bb31 AL |
1497 | } |
1498 | ||
1499 | /* Remove all matching watchpoints. */ | |
1500 | void cpu_watchpoint_remove_all(CPUState *env, int mask) | |
1501 | { | |
c0ce998e | 1502 | CPUWatchpoint *wp, *next; |
a1d1bb31 | 1503 | |
72cf2d4f | 1504 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
a1d1bb31 AL |
1505 | if (wp->flags & mask) |
1506 | cpu_watchpoint_remove_by_ref(env, wp); | |
c0ce998e | 1507 | } |
7d03f82f | 1508 | } |
c527ee8f | 1509 | #endif |
7d03f82f | 1510 | |
a1d1bb31 AL |
1511 | /* Add a breakpoint. */ |
1512 | int cpu_breakpoint_insert(CPUState *env, target_ulong pc, int flags, | |
1513 | CPUBreakpoint **breakpoint) | |
4c3a88a2 | 1514 | { |
1fddef4b | 1515 | #if defined(TARGET_HAS_ICE) |
c0ce998e | 1516 | CPUBreakpoint *bp; |
3b46e624 | 1517 | |
7267c094 | 1518 | bp = g_malloc(sizeof(*bp)); |
4c3a88a2 | 1519 | |
a1d1bb31 AL |
1520 | bp->pc = pc; |
1521 | bp->flags = flags; | |
1522 | ||
2dc9f411 | 1523 | /* keep all GDB-injected breakpoints in front */ |
c0ce998e | 1524 | if (flags & BP_GDB) |
72cf2d4f | 1525 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
c0ce998e | 1526 | else |
72cf2d4f | 1527 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
3b46e624 | 1528 | |
d720b93d | 1529 | breakpoint_invalidate(env, pc); |
a1d1bb31 AL |
1530 | |
1531 | if (breakpoint) | |
1532 | *breakpoint = bp; | |
4c3a88a2 FB |
1533 | return 0; |
1534 | #else | |
a1d1bb31 | 1535 | return -ENOSYS; |
4c3a88a2 FB |
1536 | #endif |
1537 | } | |
1538 | ||
a1d1bb31 AL |
1539 | /* Remove a specific breakpoint. */ |
1540 | int cpu_breakpoint_remove(CPUState *env, target_ulong pc, int flags) | |
1541 | { | |
7d03f82f | 1542 | #if defined(TARGET_HAS_ICE) |
a1d1bb31 AL |
1543 | CPUBreakpoint *bp; |
1544 | ||
72cf2d4f | 1545 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
a1d1bb31 AL |
1546 | if (bp->pc == pc && bp->flags == flags) { |
1547 | cpu_breakpoint_remove_by_ref(env, bp); | |
1548 | return 0; | |
1549 | } | |
7d03f82f | 1550 | } |
a1d1bb31 AL |
1551 | return -ENOENT; |
1552 | #else | |
1553 | return -ENOSYS; | |
7d03f82f EI |
1554 | #endif |
1555 | } | |
1556 | ||
a1d1bb31 AL |
1557 | /* Remove a specific breakpoint by reference. */ |
1558 | void cpu_breakpoint_remove_by_ref(CPUState *env, CPUBreakpoint *breakpoint) | |
4c3a88a2 | 1559 | { |
1fddef4b | 1560 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 1561 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
d720b93d | 1562 | |
a1d1bb31 AL |
1563 | breakpoint_invalidate(env, breakpoint->pc); |
1564 | ||
7267c094 | 1565 | g_free(breakpoint); |
a1d1bb31 AL |
1566 | #endif |
1567 | } | |
1568 | ||
1569 | /* Remove all matching breakpoints. */ | |
1570 | void cpu_breakpoint_remove_all(CPUState *env, int mask) | |
1571 | { | |
1572 | #if defined(TARGET_HAS_ICE) | |
c0ce998e | 1573 | CPUBreakpoint *bp, *next; |
a1d1bb31 | 1574 | |
72cf2d4f | 1575 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
a1d1bb31 AL |
1576 | if (bp->flags & mask) |
1577 | cpu_breakpoint_remove_by_ref(env, bp); | |
c0ce998e | 1578 | } |
4c3a88a2 FB |
1579 | #endif |
1580 | } | |
1581 | ||
c33a346e FB |
1582 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
1583 | CPU loop after each instruction */ | |
1584 | void cpu_single_step(CPUState *env, int enabled) | |
1585 | { | |
1fddef4b | 1586 | #if defined(TARGET_HAS_ICE) |
c33a346e FB |
1587 | if (env->singlestep_enabled != enabled) { |
1588 | env->singlestep_enabled = enabled; | |
e22a25c9 AL |
1589 | if (kvm_enabled()) |
1590 | kvm_update_guest_debug(env, 0); | |
1591 | else { | |
ccbb4d44 | 1592 | /* must flush all the translated code to avoid inconsistencies */ |
e22a25c9 AL |
1593 | /* XXX: only flush what is necessary */ |
1594 | tb_flush(env); | |
1595 | } | |
c33a346e FB |
1596 | } |
1597 | #endif | |
1598 | } | |
1599 | ||
34865134 FB |
1600 | /* enable or disable low levels log */ |
1601 | void cpu_set_log(int log_flags) | |
1602 | { | |
1603 | loglevel = log_flags; | |
1604 | if (loglevel && !logfile) { | |
11fcfab4 | 1605 | logfile = fopen(logfilename, log_append ? "a" : "w"); |
34865134 FB |
1606 | if (!logfile) { |
1607 | perror(logfilename); | |
1608 | _exit(1); | |
1609 | } | |
9fa3e853 FB |
1610 | #if !defined(CONFIG_SOFTMMU) |
1611 | /* must avoid mmap() usage of glibc by setting a buffer "by hand" */ | |
1612 | { | |
b55266b5 | 1613 | static char logfile_buf[4096]; |
9fa3e853 FB |
1614 | setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf)); |
1615 | } | |
daf767b1 SW |
1616 | #elif defined(_WIN32) |
1617 | /* Win32 doesn't support line-buffering, so use unbuffered output. */ | |
1618 | setvbuf(logfile, NULL, _IONBF, 0); | |
1619 | #else | |
34865134 | 1620 | setvbuf(logfile, NULL, _IOLBF, 0); |
9fa3e853 | 1621 | #endif |
e735b91c PB |
1622 | log_append = 1; |
1623 | } | |
1624 | if (!loglevel && logfile) { | |
1625 | fclose(logfile); | |
1626 | logfile = NULL; | |
34865134 FB |
1627 | } |
1628 | } | |
1629 | ||
1630 | void cpu_set_log_filename(const char *filename) | |
1631 | { | |
1632 | logfilename = strdup(filename); | |
e735b91c PB |
1633 | if (logfile) { |
1634 | fclose(logfile); | |
1635 | logfile = NULL; | |
1636 | } | |
1637 | cpu_set_log(loglevel); | |
34865134 | 1638 | } |
c33a346e | 1639 | |
3098dba0 | 1640 | static void cpu_unlink_tb(CPUState *env) |
ea041c0e | 1641 | { |
3098dba0 AJ |
1642 | /* FIXME: TB unchaining isn't SMP safe. For now just ignore the |
1643 | problem and hope the cpu will stop of its own accord. For userspace | |
1644 | emulation this often isn't actually as bad as it sounds. Often | |
1645 | signals are used primarily to interrupt blocking syscalls. */ | |
ea041c0e | 1646 | TranslationBlock *tb; |
c227f099 | 1647 | static spinlock_t interrupt_lock = SPIN_LOCK_UNLOCKED; |
59817ccb | 1648 | |
cab1b4bd | 1649 | spin_lock(&interrupt_lock); |
3098dba0 AJ |
1650 | tb = env->current_tb; |
1651 | /* if the cpu is currently executing code, we must unlink it and | |
1652 | all the potentially executing TB */ | |
f76cfe56 | 1653 | if (tb) { |
3098dba0 AJ |
1654 | env->current_tb = NULL; |
1655 | tb_reset_jump_recursive(tb); | |
be214e6c | 1656 | } |
cab1b4bd | 1657 | spin_unlock(&interrupt_lock); |
3098dba0 AJ |
1658 | } |
1659 | ||
97ffbd8d | 1660 | #ifndef CONFIG_USER_ONLY |
3098dba0 | 1661 | /* mask must never be zero, except for A20 change call */ |
ec6959d0 | 1662 | static void tcg_handle_interrupt(CPUState *env, int mask) |
3098dba0 AJ |
1663 | { |
1664 | int old_mask; | |
be214e6c | 1665 | |
2e70f6ef | 1666 | old_mask = env->interrupt_request; |
68a79315 | 1667 | env->interrupt_request |= mask; |
3098dba0 | 1668 | |
8edac960 AL |
1669 | /* |
1670 | * If called from iothread context, wake the target cpu in | |
1671 | * case its halted. | |
1672 | */ | |
b7680cb6 | 1673 | if (!qemu_cpu_is_self(env)) { |
8edac960 AL |
1674 | qemu_cpu_kick(env); |
1675 | return; | |
1676 | } | |
8edac960 | 1677 | |
2e70f6ef | 1678 | if (use_icount) { |
266910c4 | 1679 | env->icount_decr.u16.high = 0xffff; |
2e70f6ef | 1680 | if (!can_do_io(env) |
be214e6c | 1681 | && (mask & ~old_mask) != 0) { |
2e70f6ef PB |
1682 | cpu_abort(env, "Raised interrupt while not in I/O function"); |
1683 | } | |
2e70f6ef | 1684 | } else { |
3098dba0 | 1685 | cpu_unlink_tb(env); |
ea041c0e FB |
1686 | } |
1687 | } | |
1688 | ||
ec6959d0 JK |
1689 | CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt; |
1690 | ||
97ffbd8d JK |
1691 | #else /* CONFIG_USER_ONLY */ |
1692 | ||
1693 | void cpu_interrupt(CPUState *env, int mask) | |
1694 | { | |
1695 | env->interrupt_request |= mask; | |
1696 | cpu_unlink_tb(env); | |
1697 | } | |
1698 | #endif /* CONFIG_USER_ONLY */ | |
1699 | ||
b54ad049 FB |
1700 | void cpu_reset_interrupt(CPUState *env, int mask) |
1701 | { | |
1702 | env->interrupt_request &= ~mask; | |
1703 | } | |
1704 | ||
3098dba0 AJ |
1705 | void cpu_exit(CPUState *env) |
1706 | { | |
1707 | env->exit_request = 1; | |
1708 | cpu_unlink_tb(env); | |
1709 | } | |
1710 | ||
c7cd6a37 | 1711 | const CPULogItem cpu_log_items[] = { |
5fafdf24 | 1712 | { CPU_LOG_TB_OUT_ASM, "out_asm", |
f193c797 FB |
1713 | "show generated host assembly code for each compiled TB" }, |
1714 | { CPU_LOG_TB_IN_ASM, "in_asm", | |
1715 | "show target assembly code for each compiled TB" }, | |
5fafdf24 | 1716 | { CPU_LOG_TB_OP, "op", |
57fec1fe | 1717 | "show micro ops for each compiled TB" }, |
f193c797 | 1718 | { CPU_LOG_TB_OP_OPT, "op_opt", |
e01a1157 BS |
1719 | "show micro ops " |
1720 | #ifdef TARGET_I386 | |
1721 | "before eflags optimization and " | |
f193c797 | 1722 | #endif |
e01a1157 | 1723 | "after liveness analysis" }, |
f193c797 FB |
1724 | { CPU_LOG_INT, "int", |
1725 | "show interrupts/exceptions in short format" }, | |
1726 | { CPU_LOG_EXEC, "exec", | |
1727 | "show trace before each executed TB (lots of logs)" }, | |
9fddaa0c | 1728 | { CPU_LOG_TB_CPU, "cpu", |
e91c8a77 | 1729 | "show CPU state before block translation" }, |
f193c797 FB |
1730 | #ifdef TARGET_I386 |
1731 | { CPU_LOG_PCALL, "pcall", | |
1732 | "show protected mode far calls/returns/exceptions" }, | |
eca1bdf4 AL |
1733 | { CPU_LOG_RESET, "cpu_reset", |
1734 | "show CPU state before CPU resets" }, | |
f193c797 | 1735 | #endif |
8e3a9fd2 | 1736 | #ifdef DEBUG_IOPORT |
fd872598 FB |
1737 | { CPU_LOG_IOPORT, "ioport", |
1738 | "show all i/o ports accesses" }, | |
8e3a9fd2 | 1739 | #endif |
f193c797 FB |
1740 | { 0, NULL, NULL }, |
1741 | }; | |
1742 | ||
1743 | static int cmp1(const char *s1, int n, const char *s2) | |
1744 | { | |
1745 | if (strlen(s2) != n) | |
1746 | return 0; | |
1747 | return memcmp(s1, s2, n) == 0; | |
1748 | } | |
3b46e624 | 1749 | |
f193c797 FB |
1750 | /* takes a comma separated list of log masks. Return 0 if error. */ |
1751 | int cpu_str_to_log_mask(const char *str) | |
1752 | { | |
c7cd6a37 | 1753 | const CPULogItem *item; |
f193c797 FB |
1754 | int mask; |
1755 | const char *p, *p1; | |
1756 | ||
1757 | p = str; | |
1758 | mask = 0; | |
1759 | for(;;) { | |
1760 | p1 = strchr(p, ','); | |
1761 | if (!p1) | |
1762 | p1 = p + strlen(p); | |
9742bf26 YT |
1763 | if(cmp1(p,p1-p,"all")) { |
1764 | for(item = cpu_log_items; item->mask != 0; item++) { | |
1765 | mask |= item->mask; | |
1766 | } | |
1767 | } else { | |
1768 | for(item = cpu_log_items; item->mask != 0; item++) { | |
1769 | if (cmp1(p, p1 - p, item->name)) | |
1770 | goto found; | |
1771 | } | |
1772 | return 0; | |
f193c797 | 1773 | } |
f193c797 FB |
1774 | found: |
1775 | mask |= item->mask; | |
1776 | if (*p1 != ',') | |
1777 | break; | |
1778 | p = p1 + 1; | |
1779 | } | |
1780 | return mask; | |
1781 | } | |
ea041c0e | 1782 | |
7501267e FB |
1783 | void cpu_abort(CPUState *env, const char *fmt, ...) |
1784 | { | |
1785 | va_list ap; | |
493ae1f0 | 1786 | va_list ap2; |
7501267e FB |
1787 | |
1788 | va_start(ap, fmt); | |
493ae1f0 | 1789 | va_copy(ap2, ap); |
7501267e FB |
1790 | fprintf(stderr, "qemu: fatal: "); |
1791 | vfprintf(stderr, fmt, ap); | |
1792 | fprintf(stderr, "\n"); | |
1793 | #ifdef TARGET_I386 | |
7fe48483 FB |
1794 | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP); |
1795 | #else | |
1796 | cpu_dump_state(env, stderr, fprintf, 0); | |
7501267e | 1797 | #endif |
93fcfe39 AL |
1798 | if (qemu_log_enabled()) { |
1799 | qemu_log("qemu: fatal: "); | |
1800 | qemu_log_vprintf(fmt, ap2); | |
1801 | qemu_log("\n"); | |
f9373291 | 1802 | #ifdef TARGET_I386 |
93fcfe39 | 1803 | log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
f9373291 | 1804 | #else |
93fcfe39 | 1805 | log_cpu_state(env, 0); |
f9373291 | 1806 | #endif |
31b1a7b4 | 1807 | qemu_log_flush(); |
93fcfe39 | 1808 | qemu_log_close(); |
924edcae | 1809 | } |
493ae1f0 | 1810 | va_end(ap2); |
f9373291 | 1811 | va_end(ap); |
fd052bf6 RV |
1812 | #if defined(CONFIG_USER_ONLY) |
1813 | { | |
1814 | struct sigaction act; | |
1815 | sigfillset(&act.sa_mask); | |
1816 | act.sa_handler = SIG_DFL; | |
1817 | sigaction(SIGABRT, &act, NULL); | |
1818 | } | |
1819 | #endif | |
7501267e FB |
1820 | abort(); |
1821 | } | |
1822 | ||
c5be9f08 TS |
1823 | CPUState *cpu_copy(CPUState *env) |
1824 | { | |
01ba9816 | 1825 | CPUState *new_env = cpu_init(env->cpu_model_str); |
c5be9f08 TS |
1826 | CPUState *next_cpu = new_env->next_cpu; |
1827 | int cpu_index = new_env->cpu_index; | |
5a38f081 AL |
1828 | #if defined(TARGET_HAS_ICE) |
1829 | CPUBreakpoint *bp; | |
1830 | CPUWatchpoint *wp; | |
1831 | #endif | |
1832 | ||
c5be9f08 | 1833 | memcpy(new_env, env, sizeof(CPUState)); |
5a38f081 AL |
1834 | |
1835 | /* Preserve chaining and index. */ | |
c5be9f08 TS |
1836 | new_env->next_cpu = next_cpu; |
1837 | new_env->cpu_index = cpu_index; | |
5a38f081 AL |
1838 | |
1839 | /* Clone all break/watchpoints. | |
1840 | Note: Once we support ptrace with hw-debug register access, make sure | |
1841 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
72cf2d4f BS |
1842 | QTAILQ_INIT(&env->breakpoints); |
1843 | QTAILQ_INIT(&env->watchpoints); | |
5a38f081 | 1844 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 1845 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
5a38f081 AL |
1846 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
1847 | } | |
72cf2d4f | 1848 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
5a38f081 AL |
1849 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
1850 | wp->flags, NULL); | |
1851 | } | |
1852 | #endif | |
1853 | ||
c5be9f08 TS |
1854 | return new_env; |
1855 | } | |
1856 | ||
0124311e FB |
1857 | #if !defined(CONFIG_USER_ONLY) |
1858 | ||
5c751e99 EI |
1859 | static inline void tlb_flush_jmp_cache(CPUState *env, target_ulong addr) |
1860 | { | |
1861 | unsigned int i; | |
1862 | ||
1863 | /* Discard jump cache entries for any tb which might potentially | |
1864 | overlap the flushed page. */ | |
1865 | i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE); | |
1866 | memset (&env->tb_jmp_cache[i], 0, | |
9742bf26 | 1867 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
5c751e99 EI |
1868 | |
1869 | i = tb_jmp_cache_hash_page(addr); | |
1870 | memset (&env->tb_jmp_cache[i], 0, | |
9742bf26 | 1871 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
5c751e99 EI |
1872 | } |
1873 | ||
08738984 IK |
1874 | static CPUTLBEntry s_cputlb_empty_entry = { |
1875 | .addr_read = -1, | |
1876 | .addr_write = -1, | |
1877 | .addr_code = -1, | |
1878 | .addend = -1, | |
1879 | }; | |
1880 | ||
ee8b7021 FB |
1881 | /* NOTE: if flush_global is true, also flush global entries (not |
1882 | implemented yet) */ | |
1883 | void tlb_flush(CPUState *env, int flush_global) | |
33417e70 | 1884 | { |
33417e70 | 1885 | int i; |
0124311e | 1886 | |
9fa3e853 FB |
1887 | #if defined(DEBUG_TLB) |
1888 | printf("tlb_flush:\n"); | |
1889 | #endif | |
0124311e FB |
1890 | /* must reset current TB so that interrupts cannot modify the |
1891 | links while we are modifying them */ | |
1892 | env->current_tb = NULL; | |
1893 | ||
33417e70 | 1894 | for(i = 0; i < CPU_TLB_SIZE; i++) { |
cfde4bd9 IY |
1895 | int mmu_idx; |
1896 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { | |
08738984 | 1897 | env->tlb_table[mmu_idx][i] = s_cputlb_empty_entry; |
cfde4bd9 | 1898 | } |
33417e70 | 1899 | } |
9fa3e853 | 1900 | |
8a40a180 | 1901 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); |
9fa3e853 | 1902 | |
d4c430a8 PB |
1903 | env->tlb_flush_addr = -1; |
1904 | env->tlb_flush_mask = 0; | |
e3db7226 | 1905 | tlb_flush_count++; |
33417e70 FB |
1906 | } |
1907 | ||
274da6b2 | 1908 | static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr) |
61382a50 | 1909 | { |
5fafdf24 | 1910 | if (addr == (tlb_entry->addr_read & |
84b7b8e7 | 1911 | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) || |
5fafdf24 | 1912 | addr == (tlb_entry->addr_write & |
84b7b8e7 | 1913 | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) || |
5fafdf24 | 1914 | addr == (tlb_entry->addr_code & |
84b7b8e7 | 1915 | (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { |
08738984 | 1916 | *tlb_entry = s_cputlb_empty_entry; |
84b7b8e7 | 1917 | } |
61382a50 FB |
1918 | } |
1919 | ||
2e12669a | 1920 | void tlb_flush_page(CPUState *env, target_ulong addr) |
33417e70 | 1921 | { |
8a40a180 | 1922 | int i; |
cfde4bd9 | 1923 | int mmu_idx; |
0124311e | 1924 | |
9fa3e853 | 1925 | #if defined(DEBUG_TLB) |
108c49b8 | 1926 | printf("tlb_flush_page: " TARGET_FMT_lx "\n", addr); |
9fa3e853 | 1927 | #endif |
d4c430a8 PB |
1928 | /* Check if we need to flush due to large pages. */ |
1929 | if ((addr & env->tlb_flush_mask) == env->tlb_flush_addr) { | |
1930 | #if defined(DEBUG_TLB) | |
1931 | printf("tlb_flush_page: forced full flush (" | |
1932 | TARGET_FMT_lx "/" TARGET_FMT_lx ")\n", | |
1933 | env->tlb_flush_addr, env->tlb_flush_mask); | |
1934 | #endif | |
1935 | tlb_flush(env, 1); | |
1936 | return; | |
1937 | } | |
0124311e FB |
1938 | /* must reset current TB so that interrupts cannot modify the |
1939 | links while we are modifying them */ | |
1940 | env->current_tb = NULL; | |
61382a50 FB |
1941 | |
1942 | addr &= TARGET_PAGE_MASK; | |
1943 | i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
cfde4bd9 IY |
1944 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) |
1945 | tlb_flush_entry(&env->tlb_table[mmu_idx][i], addr); | |
0124311e | 1946 | |
5c751e99 | 1947 | tlb_flush_jmp_cache(env, addr); |
9fa3e853 FB |
1948 | } |
1949 | ||
9fa3e853 FB |
1950 | /* update the TLBs so that writes to code in the virtual page 'addr' |
1951 | can be detected */ | |
c227f099 | 1952 | static void tlb_protect_code(ram_addr_t ram_addr) |
9fa3e853 | 1953 | { |
5fafdf24 | 1954 | cpu_physical_memory_reset_dirty(ram_addr, |
6a00d601 FB |
1955 | ram_addr + TARGET_PAGE_SIZE, |
1956 | CODE_DIRTY_FLAG); | |
9fa3e853 FB |
1957 | } |
1958 | ||
9fa3e853 | 1959 | /* update the TLB so that writes in physical page 'phys_addr' are no longer |
3a7d929e | 1960 | tested for self modifying code */ |
c227f099 | 1961 | static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr, |
3a7d929e | 1962 | target_ulong vaddr) |
9fa3e853 | 1963 | { |
f7c11b53 | 1964 | cpu_physical_memory_set_dirty_flags(ram_addr, CODE_DIRTY_FLAG); |
1ccde1cb FB |
1965 | } |
1966 | ||
5fafdf24 | 1967 | static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry, |
1ccde1cb FB |
1968 | unsigned long start, unsigned long length) |
1969 | { | |
1970 | unsigned long addr; | |
0e0df1e2 | 1971 | if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) { |
84b7b8e7 | 1972 | addr = (tlb_entry->addr_write & TARGET_PAGE_MASK) + tlb_entry->addend; |
1ccde1cb | 1973 | if ((addr - start) < length) { |
0f459d16 | 1974 | tlb_entry->addr_write = (tlb_entry->addr_write & TARGET_PAGE_MASK) | TLB_NOTDIRTY; |
1ccde1cb FB |
1975 | } |
1976 | } | |
1977 | } | |
1978 | ||
5579c7f3 | 1979 | /* Note: start and end must be within the same ram block. */ |
c227f099 | 1980 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
0a962c02 | 1981 | int dirty_flags) |
1ccde1cb FB |
1982 | { |
1983 | CPUState *env; | |
4f2ac237 | 1984 | unsigned long length, start1; |
f7c11b53 | 1985 | int i; |
1ccde1cb FB |
1986 | |
1987 | start &= TARGET_PAGE_MASK; | |
1988 | end = TARGET_PAGE_ALIGN(end); | |
1989 | ||
1990 | length = end - start; | |
1991 | if (length == 0) | |
1992 | return; | |
f7c11b53 | 1993 | cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); |
f23db169 | 1994 | |
1ccde1cb FB |
1995 | /* we modify the TLB cache so that the dirty bit will be set again |
1996 | when accessing the range */ | |
b2e0a138 | 1997 | start1 = (unsigned long)qemu_safe_ram_ptr(start); |
a57d23e4 | 1998 | /* Check that we don't span multiple blocks - this breaks the |
5579c7f3 | 1999 | address comparisons below. */ |
b2e0a138 | 2000 | if ((unsigned long)qemu_safe_ram_ptr(end - 1) - start1 |
5579c7f3 PB |
2001 | != (end - 1) - start) { |
2002 | abort(); | |
2003 | } | |
2004 | ||
6a00d601 | 2005 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
cfde4bd9 IY |
2006 | int mmu_idx; |
2007 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { | |
2008 | for(i = 0; i < CPU_TLB_SIZE; i++) | |
2009 | tlb_reset_dirty_range(&env->tlb_table[mmu_idx][i], | |
2010 | start1, length); | |
2011 | } | |
6a00d601 | 2012 | } |
1ccde1cb FB |
2013 | } |
2014 | ||
74576198 AL |
2015 | int cpu_physical_memory_set_dirty_tracking(int enable) |
2016 | { | |
f6f3fbca | 2017 | int ret = 0; |
74576198 | 2018 | in_migration = enable; |
f6f3fbca | 2019 | return ret; |
74576198 AL |
2020 | } |
2021 | ||
3a7d929e FB |
2022 | static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry) |
2023 | { | |
c227f099 | 2024 | ram_addr_t ram_addr; |
5579c7f3 | 2025 | void *p; |
3a7d929e | 2026 | |
0e0df1e2 | 2027 | if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) { |
5579c7f3 PB |
2028 | p = (void *)(unsigned long)((tlb_entry->addr_write & TARGET_PAGE_MASK) |
2029 | + tlb_entry->addend); | |
e890261f | 2030 | ram_addr = qemu_ram_addr_from_host_nofail(p); |
3a7d929e | 2031 | if (!cpu_physical_memory_is_dirty(ram_addr)) { |
0f459d16 | 2032 | tlb_entry->addr_write |= TLB_NOTDIRTY; |
3a7d929e FB |
2033 | } |
2034 | } | |
2035 | } | |
2036 | ||
2037 | /* update the TLB according to the current state of the dirty bits */ | |
2038 | void cpu_tlb_update_dirty(CPUState *env) | |
2039 | { | |
2040 | int i; | |
cfde4bd9 IY |
2041 | int mmu_idx; |
2042 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { | |
2043 | for(i = 0; i < CPU_TLB_SIZE; i++) | |
2044 | tlb_update_dirty(&env->tlb_table[mmu_idx][i]); | |
2045 | } | |
3a7d929e FB |
2046 | } |
2047 | ||
0f459d16 | 2048 | static inline void tlb_set_dirty1(CPUTLBEntry *tlb_entry, target_ulong vaddr) |
1ccde1cb | 2049 | { |
0f459d16 PB |
2050 | if (tlb_entry->addr_write == (vaddr | TLB_NOTDIRTY)) |
2051 | tlb_entry->addr_write = vaddr; | |
1ccde1cb FB |
2052 | } |
2053 | ||
0f459d16 PB |
2054 | /* update the TLB corresponding to virtual page vaddr |
2055 | so that it is no longer dirty */ | |
2056 | static inline void tlb_set_dirty(CPUState *env, target_ulong vaddr) | |
1ccde1cb | 2057 | { |
1ccde1cb | 2058 | int i; |
cfde4bd9 | 2059 | int mmu_idx; |
1ccde1cb | 2060 | |
0f459d16 | 2061 | vaddr &= TARGET_PAGE_MASK; |
1ccde1cb | 2062 | i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
cfde4bd9 IY |
2063 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) |
2064 | tlb_set_dirty1(&env->tlb_table[mmu_idx][i], vaddr); | |
9fa3e853 FB |
2065 | } |
2066 | ||
d4c430a8 PB |
2067 | /* Our TLB does not support large pages, so remember the area covered by |
2068 | large pages and trigger a full TLB flush if these are invalidated. */ | |
2069 | static void tlb_add_large_page(CPUState *env, target_ulong vaddr, | |
2070 | target_ulong size) | |
2071 | { | |
2072 | target_ulong mask = ~(size - 1); | |
2073 | ||
2074 | if (env->tlb_flush_addr == (target_ulong)-1) { | |
2075 | env->tlb_flush_addr = vaddr & mask; | |
2076 | env->tlb_flush_mask = mask; | |
2077 | return; | |
2078 | } | |
2079 | /* Extend the existing region to include the new page. | |
2080 | This is a compromise between unnecessary flushes and the cost | |
2081 | of maintaining a full variable size TLB. */ | |
2082 | mask &= env->tlb_flush_mask; | |
2083 | while (((env->tlb_flush_addr ^ vaddr) & mask) != 0) { | |
2084 | mask <<= 1; | |
2085 | } | |
2086 | env->tlb_flush_addr &= mask; | |
2087 | env->tlb_flush_mask = mask; | |
2088 | } | |
2089 | ||
1d393fa2 AK |
2090 | static bool is_ram_rom(ram_addr_t pd) |
2091 | { | |
2092 | pd &= ~TARGET_PAGE_MASK; | |
0e0df1e2 | 2093 | return pd == io_mem_ram.ram_addr || pd == io_mem_rom.ram_addr; |
1d393fa2 AK |
2094 | } |
2095 | ||
2096 | static bool is_ram_rom_romd(ram_addr_t pd) | |
2097 | { | |
2098 | return is_ram_rom(pd) || (pd & IO_MEM_ROMD); | |
2099 | } | |
2100 | ||
d4c430a8 PB |
2101 | /* Add a new TLB entry. At most one entry for a given virtual address |
2102 | is permitted. Only a single TARGET_PAGE_SIZE region is mapped, the | |
2103 | supplied size is only used by tlb_flush_page. */ | |
2104 | void tlb_set_page(CPUState *env, target_ulong vaddr, | |
2105 | target_phys_addr_t paddr, int prot, | |
2106 | int mmu_idx, target_ulong size) | |
9fa3e853 | 2107 | { |
f1f6e3b8 | 2108 | PhysPageDesc p; |
4f2ac237 | 2109 | unsigned long pd; |
9fa3e853 | 2110 | unsigned int index; |
4f2ac237 | 2111 | target_ulong address; |
0f459d16 | 2112 | target_ulong code_address; |
355b1943 | 2113 | unsigned long addend; |
84b7b8e7 | 2114 | CPUTLBEntry *te; |
a1d1bb31 | 2115 | CPUWatchpoint *wp; |
c227f099 | 2116 | target_phys_addr_t iotlb; |
9fa3e853 | 2117 | |
d4c430a8 PB |
2118 | assert(size >= TARGET_PAGE_SIZE); |
2119 | if (size != TARGET_PAGE_SIZE) { | |
2120 | tlb_add_large_page(env, vaddr, size); | |
2121 | } | |
92e873b9 | 2122 | p = phys_page_find(paddr >> TARGET_PAGE_BITS); |
f1f6e3b8 | 2123 | pd = p.phys_offset; |
9fa3e853 | 2124 | #if defined(DEBUG_TLB) |
7fd3f494 SW |
2125 | printf("tlb_set_page: vaddr=" TARGET_FMT_lx " paddr=0x" TARGET_FMT_plx |
2126 | " prot=%x idx=%d pd=0x%08lx\n", | |
2127 | vaddr, paddr, prot, mmu_idx, pd); | |
9fa3e853 FB |
2128 | #endif |
2129 | ||
0f459d16 | 2130 | address = vaddr; |
1d393fa2 | 2131 | if (!is_ram_rom_romd(pd)) { |
0f459d16 PB |
2132 | /* IO memory case (romd handled later) */ |
2133 | address |= TLB_MMIO; | |
2134 | } | |
5579c7f3 | 2135 | addend = (unsigned long)qemu_get_ram_ptr(pd & TARGET_PAGE_MASK); |
1d393fa2 | 2136 | if (is_ram_rom(pd)) { |
0f459d16 PB |
2137 | /* Normal RAM. */ |
2138 | iotlb = pd & TARGET_PAGE_MASK; | |
0e0df1e2 AK |
2139 | if ((pd & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) |
2140 | iotlb |= io_mem_notdirty.ram_addr; | |
0f459d16 | 2141 | else |
0e0df1e2 | 2142 | iotlb |= io_mem_rom.ram_addr; |
0f459d16 | 2143 | } else { |
ccbb4d44 | 2144 | /* IO handlers are currently passed a physical address. |
0f459d16 PB |
2145 | It would be nice to pass an offset from the base address |
2146 | of that region. This would avoid having to special case RAM, | |
2147 | and avoid full address decoding in every device. | |
2148 | We can't use the high bits of pd for this because | |
2149 | IO_MEM_ROMD uses these as a ram address. */ | |
8da3ff18 | 2150 | iotlb = (pd & ~TARGET_PAGE_MASK); |
f1f6e3b8 | 2151 | iotlb += p.region_offset; |
0f459d16 PB |
2152 | } |
2153 | ||
2154 | code_address = address; | |
2155 | /* Make accesses to pages with watchpoints go via the | |
2156 | watchpoint trap routines. */ | |
72cf2d4f | 2157 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
a1d1bb31 | 2158 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { |
bf298f83 JK |
2159 | /* Avoid trapping reads of pages with a write breakpoint. */ |
2160 | if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) { | |
2161 | iotlb = io_mem_watch + paddr; | |
2162 | address |= TLB_MMIO; | |
2163 | break; | |
2164 | } | |
6658ffb8 | 2165 | } |
0f459d16 | 2166 | } |
d79acba4 | 2167 | |
0f459d16 PB |
2168 | index = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
2169 | env->iotlb[mmu_idx][index] = iotlb - vaddr; | |
2170 | te = &env->tlb_table[mmu_idx][index]; | |
2171 | te->addend = addend - vaddr; | |
2172 | if (prot & PAGE_READ) { | |
2173 | te->addr_read = address; | |
2174 | } else { | |
2175 | te->addr_read = -1; | |
2176 | } | |
5c751e99 | 2177 | |
0f459d16 PB |
2178 | if (prot & PAGE_EXEC) { |
2179 | te->addr_code = code_address; | |
2180 | } else { | |
2181 | te->addr_code = -1; | |
2182 | } | |
2183 | if (prot & PAGE_WRITE) { | |
0e0df1e2 | 2184 | if ((pd & ~TARGET_PAGE_MASK) == io_mem_rom.ram_addr || |
0f459d16 PB |
2185 | (pd & IO_MEM_ROMD)) { |
2186 | /* Write access calls the I/O callback. */ | |
2187 | te->addr_write = address | TLB_MMIO; | |
0e0df1e2 | 2188 | } else if ((pd & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr && |
0f459d16 PB |
2189 | !cpu_physical_memory_is_dirty(pd)) { |
2190 | te->addr_write = address | TLB_NOTDIRTY; | |
9fa3e853 | 2191 | } else { |
0f459d16 | 2192 | te->addr_write = address; |
9fa3e853 | 2193 | } |
0f459d16 PB |
2194 | } else { |
2195 | te->addr_write = -1; | |
9fa3e853 | 2196 | } |
9fa3e853 FB |
2197 | } |
2198 | ||
0124311e FB |
2199 | #else |
2200 | ||
ee8b7021 | 2201 | void tlb_flush(CPUState *env, int flush_global) |
0124311e FB |
2202 | { |
2203 | } | |
2204 | ||
2e12669a | 2205 | void tlb_flush_page(CPUState *env, target_ulong addr) |
0124311e FB |
2206 | { |
2207 | } | |
2208 | ||
edf8e2af MW |
2209 | /* |
2210 | * Walks guest process memory "regions" one by one | |
2211 | * and calls callback function 'fn' for each region. | |
2212 | */ | |
5cd2c5b6 RH |
2213 | |
2214 | struct walk_memory_regions_data | |
2215 | { | |
2216 | walk_memory_regions_fn fn; | |
2217 | void *priv; | |
2218 | unsigned long start; | |
2219 | int prot; | |
2220 | }; | |
2221 | ||
2222 | static int walk_memory_regions_end(struct walk_memory_regions_data *data, | |
b480d9b7 | 2223 | abi_ulong end, int new_prot) |
5cd2c5b6 RH |
2224 | { |
2225 | if (data->start != -1ul) { | |
2226 | int rc = data->fn(data->priv, data->start, end, data->prot); | |
2227 | if (rc != 0) { | |
2228 | return rc; | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | data->start = (new_prot ? end : -1ul); | |
2233 | data->prot = new_prot; | |
2234 | ||
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | static int walk_memory_regions_1(struct walk_memory_regions_data *data, | |
b480d9b7 | 2239 | abi_ulong base, int level, void **lp) |
5cd2c5b6 | 2240 | { |
b480d9b7 | 2241 | abi_ulong pa; |
5cd2c5b6 RH |
2242 | int i, rc; |
2243 | ||
2244 | if (*lp == NULL) { | |
2245 | return walk_memory_regions_end(data, base, 0); | |
2246 | } | |
2247 | ||
2248 | if (level == 0) { | |
2249 | PageDesc *pd = *lp; | |
7296abac | 2250 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
2251 | int prot = pd[i].flags; |
2252 | ||
2253 | pa = base | (i << TARGET_PAGE_BITS); | |
2254 | if (prot != data->prot) { | |
2255 | rc = walk_memory_regions_end(data, pa, prot); | |
2256 | if (rc != 0) { | |
2257 | return rc; | |
9fa3e853 | 2258 | } |
9fa3e853 | 2259 | } |
5cd2c5b6 RH |
2260 | } |
2261 | } else { | |
2262 | void **pp = *lp; | |
7296abac | 2263 | for (i = 0; i < L2_SIZE; ++i) { |
b480d9b7 PB |
2264 | pa = base | ((abi_ulong)i << |
2265 | (TARGET_PAGE_BITS + L2_BITS * level)); | |
5cd2c5b6 RH |
2266 | rc = walk_memory_regions_1(data, pa, level - 1, pp + i); |
2267 | if (rc != 0) { | |
2268 | return rc; | |
2269 | } | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | return 0; | |
2274 | } | |
2275 | ||
2276 | int walk_memory_regions(void *priv, walk_memory_regions_fn fn) | |
2277 | { | |
2278 | struct walk_memory_regions_data data; | |
2279 | unsigned long i; | |
2280 | ||
2281 | data.fn = fn; | |
2282 | data.priv = priv; | |
2283 | data.start = -1ul; | |
2284 | data.prot = 0; | |
2285 | ||
2286 | for (i = 0; i < V_L1_SIZE; i++) { | |
b480d9b7 | 2287 | int rc = walk_memory_regions_1(&data, (abi_ulong)i << V_L1_SHIFT, |
5cd2c5b6 RH |
2288 | V_L1_SHIFT / L2_BITS - 1, l1_map + i); |
2289 | if (rc != 0) { | |
2290 | return rc; | |
9fa3e853 | 2291 | } |
33417e70 | 2292 | } |
5cd2c5b6 RH |
2293 | |
2294 | return walk_memory_regions_end(&data, 0, 0); | |
edf8e2af MW |
2295 | } |
2296 | ||
b480d9b7 PB |
2297 | static int dump_region(void *priv, abi_ulong start, |
2298 | abi_ulong end, unsigned long prot) | |
edf8e2af MW |
2299 | { |
2300 | FILE *f = (FILE *)priv; | |
2301 | ||
b480d9b7 PB |
2302 | (void) fprintf(f, TARGET_ABI_FMT_lx"-"TARGET_ABI_FMT_lx |
2303 | " "TARGET_ABI_FMT_lx" %c%c%c\n", | |
edf8e2af MW |
2304 | start, end, end - start, |
2305 | ((prot & PAGE_READ) ? 'r' : '-'), | |
2306 | ((prot & PAGE_WRITE) ? 'w' : '-'), | |
2307 | ((prot & PAGE_EXEC) ? 'x' : '-')); | |
2308 | ||
2309 | return (0); | |
2310 | } | |
2311 | ||
2312 | /* dump memory mappings */ | |
2313 | void page_dump(FILE *f) | |
2314 | { | |
2315 | (void) fprintf(f, "%-8s %-8s %-8s %s\n", | |
2316 | "start", "end", "size", "prot"); | |
2317 | walk_memory_regions(f, dump_region); | |
33417e70 FB |
2318 | } |
2319 | ||
53a5960a | 2320 | int page_get_flags(target_ulong address) |
33417e70 | 2321 | { |
9fa3e853 FB |
2322 | PageDesc *p; |
2323 | ||
2324 | p = page_find(address >> TARGET_PAGE_BITS); | |
33417e70 | 2325 | if (!p) |
9fa3e853 FB |
2326 | return 0; |
2327 | return p->flags; | |
2328 | } | |
2329 | ||
376a7909 RH |
2330 | /* Modify the flags of a page and invalidate the code if necessary. |
2331 | The flag PAGE_WRITE_ORG is positioned automatically depending | |
2332 | on PAGE_WRITE. The mmap_lock should already be held. */ | |
53a5960a | 2333 | void page_set_flags(target_ulong start, target_ulong end, int flags) |
9fa3e853 | 2334 | { |
376a7909 RH |
2335 | target_ulong addr, len; |
2336 | ||
2337 | /* This function should never be called with addresses outside the | |
2338 | guest address space. If this assert fires, it probably indicates | |
2339 | a missing call to h2g_valid. */ | |
b480d9b7 PB |
2340 | #if TARGET_ABI_BITS > L1_MAP_ADDR_SPACE_BITS |
2341 | assert(end < ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS)); | |
376a7909 RH |
2342 | #endif |
2343 | assert(start < end); | |
9fa3e853 FB |
2344 | |
2345 | start = start & TARGET_PAGE_MASK; | |
2346 | end = TARGET_PAGE_ALIGN(end); | |
376a7909 RH |
2347 | |
2348 | if (flags & PAGE_WRITE) { | |
9fa3e853 | 2349 | flags |= PAGE_WRITE_ORG; |
376a7909 RH |
2350 | } |
2351 | ||
2352 | for (addr = start, len = end - start; | |
2353 | len != 0; | |
2354 | len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { | |
2355 | PageDesc *p = page_find_alloc(addr >> TARGET_PAGE_BITS, 1); | |
2356 | ||
2357 | /* If the write protection bit is set, then we invalidate | |
2358 | the code inside. */ | |
5fafdf24 | 2359 | if (!(p->flags & PAGE_WRITE) && |
9fa3e853 FB |
2360 | (flags & PAGE_WRITE) && |
2361 | p->first_tb) { | |
d720b93d | 2362 | tb_invalidate_phys_page(addr, 0, NULL); |
9fa3e853 FB |
2363 | } |
2364 | p->flags = flags; | |
2365 | } | |
33417e70 FB |
2366 | } |
2367 | ||
3d97b40b TS |
2368 | int page_check_range(target_ulong start, target_ulong len, int flags) |
2369 | { | |
2370 | PageDesc *p; | |
2371 | target_ulong end; | |
2372 | target_ulong addr; | |
2373 | ||
376a7909 RH |
2374 | /* This function should never be called with addresses outside the |
2375 | guest address space. If this assert fires, it probably indicates | |
2376 | a missing call to h2g_valid. */ | |
338e9e6c BS |
2377 | #if TARGET_ABI_BITS > L1_MAP_ADDR_SPACE_BITS |
2378 | assert(start < ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS)); | |
376a7909 RH |
2379 | #endif |
2380 | ||
3e0650a9 RH |
2381 | if (len == 0) { |
2382 | return 0; | |
2383 | } | |
376a7909 RH |
2384 | if (start + len - 1 < start) { |
2385 | /* We've wrapped around. */ | |
55f280c9 | 2386 | return -1; |
376a7909 | 2387 | } |
55f280c9 | 2388 | |
3d97b40b TS |
2389 | end = TARGET_PAGE_ALIGN(start+len); /* must do before we loose bits in the next step */ |
2390 | start = start & TARGET_PAGE_MASK; | |
2391 | ||
376a7909 RH |
2392 | for (addr = start, len = end - start; |
2393 | len != 0; | |
2394 | len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { | |
3d97b40b TS |
2395 | p = page_find(addr >> TARGET_PAGE_BITS); |
2396 | if( !p ) | |
2397 | return -1; | |
2398 | if( !(p->flags & PAGE_VALID) ) | |
2399 | return -1; | |
2400 | ||
dae3270c | 2401 | if ((flags & PAGE_READ) && !(p->flags & PAGE_READ)) |
3d97b40b | 2402 | return -1; |
dae3270c FB |
2403 | if (flags & PAGE_WRITE) { |
2404 | if (!(p->flags & PAGE_WRITE_ORG)) | |
2405 | return -1; | |
2406 | /* unprotect the page if it was put read-only because it | |
2407 | contains translated code */ | |
2408 | if (!(p->flags & PAGE_WRITE)) { | |
2409 | if (!page_unprotect(addr, 0, NULL)) | |
2410 | return -1; | |
2411 | } | |
2412 | return 0; | |
2413 | } | |
3d97b40b TS |
2414 | } |
2415 | return 0; | |
2416 | } | |
2417 | ||
9fa3e853 | 2418 | /* called from signal handler: invalidate the code and unprotect the |
ccbb4d44 | 2419 | page. Return TRUE if the fault was successfully handled. */ |
53a5960a | 2420 | int page_unprotect(target_ulong address, unsigned long pc, void *puc) |
9fa3e853 | 2421 | { |
45d679d6 AJ |
2422 | unsigned int prot; |
2423 | PageDesc *p; | |
53a5960a | 2424 | target_ulong host_start, host_end, addr; |
9fa3e853 | 2425 | |
c8a706fe PB |
2426 | /* Technically this isn't safe inside a signal handler. However we |
2427 | know this only ever happens in a synchronous SEGV handler, so in | |
2428 | practice it seems to be ok. */ | |
2429 | mmap_lock(); | |
2430 | ||
45d679d6 AJ |
2431 | p = page_find(address >> TARGET_PAGE_BITS); |
2432 | if (!p) { | |
c8a706fe | 2433 | mmap_unlock(); |
9fa3e853 | 2434 | return 0; |
c8a706fe | 2435 | } |
45d679d6 | 2436 | |
9fa3e853 FB |
2437 | /* if the page was really writable, then we change its |
2438 | protection back to writable */ | |
45d679d6 AJ |
2439 | if ((p->flags & PAGE_WRITE_ORG) && !(p->flags & PAGE_WRITE)) { |
2440 | host_start = address & qemu_host_page_mask; | |
2441 | host_end = host_start + qemu_host_page_size; | |
2442 | ||
2443 | prot = 0; | |
2444 | for (addr = host_start ; addr < host_end ; addr += TARGET_PAGE_SIZE) { | |
2445 | p = page_find(addr >> TARGET_PAGE_BITS); | |
2446 | p->flags |= PAGE_WRITE; | |
2447 | prot |= p->flags; | |
2448 | ||
9fa3e853 FB |
2449 | /* and since the content will be modified, we must invalidate |
2450 | the corresponding translated code. */ | |
45d679d6 | 2451 | tb_invalidate_phys_page(addr, pc, puc); |
9fa3e853 | 2452 | #ifdef DEBUG_TB_CHECK |
45d679d6 | 2453 | tb_invalidate_check(addr); |
9fa3e853 | 2454 | #endif |
9fa3e853 | 2455 | } |
45d679d6 AJ |
2456 | mprotect((void *)g2h(host_start), qemu_host_page_size, |
2457 | prot & PAGE_BITS); | |
2458 | ||
2459 | mmap_unlock(); | |
2460 | return 1; | |
9fa3e853 | 2461 | } |
c8a706fe | 2462 | mmap_unlock(); |
9fa3e853 FB |
2463 | return 0; |
2464 | } | |
2465 | ||
6a00d601 FB |
2466 | static inline void tlb_set_dirty(CPUState *env, |
2467 | unsigned long addr, target_ulong vaddr) | |
1ccde1cb FB |
2468 | { |
2469 | } | |
9fa3e853 FB |
2470 | #endif /* defined(CONFIG_USER_ONLY) */ |
2471 | ||
e2eef170 | 2472 | #if !defined(CONFIG_USER_ONLY) |
8da3ff18 | 2473 | |
c04b2b78 PB |
2474 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
2475 | typedef struct subpage_t { | |
70c68e44 | 2476 | MemoryRegion iomem; |
c04b2b78 | 2477 | target_phys_addr_t base; |
f6405247 RH |
2478 | ram_addr_t sub_io_index[TARGET_PAGE_SIZE]; |
2479 | ram_addr_t region_offset[TARGET_PAGE_SIZE]; | |
c04b2b78 PB |
2480 | } subpage_t; |
2481 | ||
c227f099 AL |
2482 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
2483 | ram_addr_t memory, ram_addr_t region_offset); | |
f6405247 RH |
2484 | static subpage_t *subpage_init (target_phys_addr_t base, ram_addr_t *phys, |
2485 | ram_addr_t orig_memory, | |
2486 | ram_addr_t region_offset); | |
db7b5426 BS |
2487 | #define CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2, \ |
2488 | need_subpage) \ | |
2489 | do { \ | |
2490 | if (addr > start_addr) \ | |
2491 | start_addr2 = 0; \ | |
2492 | else { \ | |
2493 | start_addr2 = start_addr & ~TARGET_PAGE_MASK; \ | |
2494 | if (start_addr2 > 0) \ | |
2495 | need_subpage = 1; \ | |
2496 | } \ | |
2497 | \ | |
49e9fba2 | 2498 | if ((start_addr + orig_size) - addr >= TARGET_PAGE_SIZE) \ |
db7b5426 BS |
2499 | end_addr2 = TARGET_PAGE_SIZE - 1; \ |
2500 | else { \ | |
2501 | end_addr2 = (start_addr + orig_size - 1) & ~TARGET_PAGE_MASK; \ | |
2502 | if (end_addr2 < TARGET_PAGE_SIZE - 1) \ | |
2503 | need_subpage = 1; \ | |
2504 | } \ | |
2505 | } while (0) | |
2506 | ||
8f2498f9 MT |
2507 | /* register physical memory. |
2508 | For RAM, 'size' must be a multiple of the target page size. | |
2509 | If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an | |
8da3ff18 PB |
2510 | io memory page. The address used when calling the IO function is |
2511 | the offset from the start of the region, plus region_offset. Both | |
ccbb4d44 | 2512 | start_addr and region_offset are rounded down to a page boundary |
8da3ff18 PB |
2513 | before calculating this offset. This should not be a problem unless |
2514 | the low bits of start_addr and region_offset differ. */ | |
dd81124b AK |
2515 | void cpu_register_physical_memory_log(MemoryRegionSection *section, |
2516 | bool readable, bool readonly) | |
33417e70 | 2517 | { |
dd81124b AK |
2518 | target_phys_addr_t start_addr = section->offset_within_address_space; |
2519 | ram_addr_t size = section->size; | |
2520 | ram_addr_t phys_offset = section->mr->ram_addr; | |
2521 | ram_addr_t region_offset = section->offset_within_region; | |
c227f099 | 2522 | target_phys_addr_t addr, end_addr; |
92e873b9 | 2523 | PhysPageDesc *p; |
9d42037b | 2524 | CPUState *env; |
c227f099 | 2525 | ram_addr_t orig_size = size; |
f6405247 | 2526 | subpage_t *subpage; |
33417e70 | 2527 | |
dd81124b AK |
2528 | if (memory_region_is_ram(section->mr)) { |
2529 | phys_offset += region_offset; | |
2530 | region_offset = 0; | |
2531 | } | |
2532 | ||
2533 | if (!readable) { | |
2534 | phys_offset &= ~TARGET_PAGE_MASK & ~IO_MEM_ROMD; | |
2535 | } | |
2536 | ||
2537 | if (readonly) { | |
2538 | phys_offset |= io_mem_rom.ram_addr; | |
2539 | } | |
2540 | ||
3b8e6a2d | 2541 | assert(size); |
f6f3fbca | 2542 | |
0e0df1e2 | 2543 | if (phys_offset == io_mem_unassigned.ram_addr) { |
67c4d23c PB |
2544 | region_offset = start_addr; |
2545 | } | |
8da3ff18 | 2546 | region_offset &= TARGET_PAGE_MASK; |
5fd386f6 | 2547 | size = (size + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK; |
c227f099 | 2548 | end_addr = start_addr + (target_phys_addr_t)size; |
3b8e6a2d EI |
2549 | |
2550 | addr = start_addr; | |
2551 | do { | |
f1f6e3b8 | 2552 | p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS, 0); |
0e0df1e2 | 2553 | if (p && p->phys_offset != io_mem_unassigned.ram_addr) { |
c227f099 AL |
2554 | ram_addr_t orig_memory = p->phys_offset; |
2555 | target_phys_addr_t start_addr2, end_addr2; | |
db7b5426 BS |
2556 | int need_subpage = 0; |
2557 | ||
2558 | CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2, | |
2559 | need_subpage); | |
f6405247 | 2560 | if (need_subpage) { |
db7b5426 BS |
2561 | if (!(orig_memory & IO_MEM_SUBPAGE)) { |
2562 | subpage = subpage_init((addr & TARGET_PAGE_MASK), | |
8da3ff18 PB |
2563 | &p->phys_offset, orig_memory, |
2564 | p->region_offset); | |
db7b5426 BS |
2565 | } else { |
2566 | subpage = io_mem_opaque[(orig_memory & ~TARGET_PAGE_MASK) | |
2567 | >> IO_MEM_SHIFT]; | |
2568 | } | |
8da3ff18 PB |
2569 | subpage_register(subpage, start_addr2, end_addr2, phys_offset, |
2570 | region_offset); | |
2571 | p->region_offset = 0; | |
db7b5426 BS |
2572 | } else { |
2573 | p->phys_offset = phys_offset; | |
2774c6d0 | 2574 | p->region_offset = region_offset; |
1d393fa2 | 2575 | if (is_ram_rom_romd(phys_offset)) |
db7b5426 BS |
2576 | phys_offset += TARGET_PAGE_SIZE; |
2577 | } | |
2578 | } else { | |
2579 | p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS, 1); | |
2580 | p->phys_offset = phys_offset; | |
8da3ff18 | 2581 | p->region_offset = region_offset; |
1d393fa2 | 2582 | if (is_ram_rom_romd(phys_offset)) { |
db7b5426 | 2583 | phys_offset += TARGET_PAGE_SIZE; |
0e8f0967 | 2584 | } else { |
c227f099 | 2585 | target_phys_addr_t start_addr2, end_addr2; |
db7b5426 BS |
2586 | int need_subpage = 0; |
2587 | ||
2588 | CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, | |
2589 | end_addr2, need_subpage); | |
2590 | ||
f6405247 | 2591 | if (need_subpage) { |
db7b5426 | 2592 | subpage = subpage_init((addr & TARGET_PAGE_MASK), |
0e0df1e2 AK |
2593 | &p->phys_offset, |
2594 | io_mem_unassigned.ram_addr, | |
67c4d23c | 2595 | addr & TARGET_PAGE_MASK); |
db7b5426 | 2596 | subpage_register(subpage, start_addr2, end_addr2, |
8da3ff18 PB |
2597 | phys_offset, region_offset); |
2598 | p->region_offset = 0; | |
db7b5426 BS |
2599 | } |
2600 | } | |
2601 | } | |
8da3ff18 | 2602 | region_offset += TARGET_PAGE_SIZE; |
3b8e6a2d EI |
2603 | addr += TARGET_PAGE_SIZE; |
2604 | } while (addr != end_addr); | |
3b46e624 | 2605 | |
9d42037b FB |
2606 | /* since each CPU stores ram addresses in its TLB cache, we must |
2607 | reset the modified entries */ | |
2608 | /* XXX: slow ! */ | |
2609 | for(env = first_cpu; env != NULL; env = env->next_cpu) { | |
2610 | tlb_flush(env, 1); | |
2611 | } | |
33417e70 FB |
2612 | } |
2613 | ||
c227f099 | 2614 | void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
f65ed4c1 AL |
2615 | { |
2616 | if (kvm_enabled()) | |
2617 | kvm_coalesce_mmio_region(addr, size); | |
2618 | } | |
2619 | ||
c227f099 | 2620 | void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
f65ed4c1 AL |
2621 | { |
2622 | if (kvm_enabled()) | |
2623 | kvm_uncoalesce_mmio_region(addr, size); | |
2624 | } | |
2625 | ||
62a2744c SY |
2626 | void qemu_flush_coalesced_mmio_buffer(void) |
2627 | { | |
2628 | if (kvm_enabled()) | |
2629 | kvm_flush_coalesced_mmio_buffer(); | |
2630 | } | |
2631 | ||
c902760f MT |
2632 | #if defined(__linux__) && !defined(TARGET_S390X) |
2633 | ||
2634 | #include <sys/vfs.h> | |
2635 | ||
2636 | #define HUGETLBFS_MAGIC 0x958458f6 | |
2637 | ||
2638 | static long gethugepagesize(const char *path) | |
2639 | { | |
2640 | struct statfs fs; | |
2641 | int ret; | |
2642 | ||
2643 | do { | |
9742bf26 | 2644 | ret = statfs(path, &fs); |
c902760f MT |
2645 | } while (ret != 0 && errno == EINTR); |
2646 | ||
2647 | if (ret != 0) { | |
9742bf26 YT |
2648 | perror(path); |
2649 | return 0; | |
c902760f MT |
2650 | } |
2651 | ||
2652 | if (fs.f_type != HUGETLBFS_MAGIC) | |
9742bf26 | 2653 | fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path); |
c902760f MT |
2654 | |
2655 | return fs.f_bsize; | |
2656 | } | |
2657 | ||
04b16653 AW |
2658 | static void *file_ram_alloc(RAMBlock *block, |
2659 | ram_addr_t memory, | |
2660 | const char *path) | |
c902760f MT |
2661 | { |
2662 | char *filename; | |
2663 | void *area; | |
2664 | int fd; | |
2665 | #ifdef MAP_POPULATE | |
2666 | int flags; | |
2667 | #endif | |
2668 | unsigned long hpagesize; | |
2669 | ||
2670 | hpagesize = gethugepagesize(path); | |
2671 | if (!hpagesize) { | |
9742bf26 | 2672 | return NULL; |
c902760f MT |
2673 | } |
2674 | ||
2675 | if (memory < hpagesize) { | |
2676 | return NULL; | |
2677 | } | |
2678 | ||
2679 | if (kvm_enabled() && !kvm_has_sync_mmu()) { | |
2680 | fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n"); | |
2681 | return NULL; | |
2682 | } | |
2683 | ||
2684 | if (asprintf(&filename, "%s/qemu_back_mem.XXXXXX", path) == -1) { | |
9742bf26 | 2685 | return NULL; |
c902760f MT |
2686 | } |
2687 | ||
2688 | fd = mkstemp(filename); | |
2689 | if (fd < 0) { | |
9742bf26 YT |
2690 | perror("unable to create backing store for hugepages"); |
2691 | free(filename); | |
2692 | return NULL; | |
c902760f MT |
2693 | } |
2694 | unlink(filename); | |
2695 | free(filename); | |
2696 | ||
2697 | memory = (memory+hpagesize-1) & ~(hpagesize-1); | |
2698 | ||
2699 | /* | |
2700 | * ftruncate is not supported by hugetlbfs in older | |
2701 | * hosts, so don't bother bailing out on errors. | |
2702 | * If anything goes wrong with it under other filesystems, | |
2703 | * mmap will fail. | |
2704 | */ | |
2705 | if (ftruncate(fd, memory)) | |
9742bf26 | 2706 | perror("ftruncate"); |
c902760f MT |
2707 | |
2708 | #ifdef MAP_POPULATE | |
2709 | /* NB: MAP_POPULATE won't exhaustively alloc all phys pages in the case | |
2710 | * MAP_PRIVATE is requested. For mem_prealloc we mmap as MAP_SHARED | |
2711 | * to sidestep this quirk. | |
2712 | */ | |
2713 | flags = mem_prealloc ? MAP_POPULATE | MAP_SHARED : MAP_PRIVATE; | |
2714 | area = mmap(0, memory, PROT_READ | PROT_WRITE, flags, fd, 0); | |
2715 | #else | |
2716 | area = mmap(0, memory, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); | |
2717 | #endif | |
2718 | if (area == MAP_FAILED) { | |
9742bf26 YT |
2719 | perror("file_ram_alloc: can't mmap RAM pages"); |
2720 | close(fd); | |
2721 | return (NULL); | |
c902760f | 2722 | } |
04b16653 | 2723 | block->fd = fd; |
c902760f MT |
2724 | return area; |
2725 | } | |
2726 | #endif | |
2727 | ||
d17b5288 | 2728 | static ram_addr_t find_ram_offset(ram_addr_t size) |
04b16653 AW |
2729 | { |
2730 | RAMBlock *block, *next_block; | |
3e837b2c | 2731 | ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX; |
04b16653 AW |
2732 | |
2733 | if (QLIST_EMPTY(&ram_list.blocks)) | |
2734 | return 0; | |
2735 | ||
2736 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
f15fbc4b | 2737 | ram_addr_t end, next = RAM_ADDR_MAX; |
04b16653 AW |
2738 | |
2739 | end = block->offset + block->length; | |
2740 | ||
2741 | QLIST_FOREACH(next_block, &ram_list.blocks, next) { | |
2742 | if (next_block->offset >= end) { | |
2743 | next = MIN(next, next_block->offset); | |
2744 | } | |
2745 | } | |
2746 | if (next - end >= size && next - end < mingap) { | |
3e837b2c | 2747 | offset = end; |
04b16653 AW |
2748 | mingap = next - end; |
2749 | } | |
2750 | } | |
3e837b2c AW |
2751 | |
2752 | if (offset == RAM_ADDR_MAX) { | |
2753 | fprintf(stderr, "Failed to find gap of requested size: %" PRIu64 "\n", | |
2754 | (uint64_t)size); | |
2755 | abort(); | |
2756 | } | |
2757 | ||
04b16653 AW |
2758 | return offset; |
2759 | } | |
2760 | ||
2761 | static ram_addr_t last_ram_offset(void) | |
d17b5288 AW |
2762 | { |
2763 | RAMBlock *block; | |
2764 | ram_addr_t last = 0; | |
2765 | ||
2766 | QLIST_FOREACH(block, &ram_list.blocks, next) | |
2767 | last = MAX(last, block->offset + block->length); | |
2768 | ||
2769 | return last; | |
2770 | } | |
2771 | ||
c5705a77 | 2772 | void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) |
84b89d78 CM |
2773 | { |
2774 | RAMBlock *new_block, *block; | |
2775 | ||
c5705a77 AK |
2776 | new_block = NULL; |
2777 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2778 | if (block->offset == addr) { | |
2779 | new_block = block; | |
2780 | break; | |
2781 | } | |
2782 | } | |
2783 | assert(new_block); | |
2784 | assert(!new_block->idstr[0]); | |
84b89d78 CM |
2785 | |
2786 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { | |
2787 | char *id = dev->parent_bus->info->get_dev_path(dev); | |
2788 | if (id) { | |
2789 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); | |
7267c094 | 2790 | g_free(id); |
84b89d78 CM |
2791 | } |
2792 | } | |
2793 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); | |
2794 | ||
2795 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
c5705a77 | 2796 | if (block != new_block && !strcmp(block->idstr, new_block->idstr)) { |
84b89d78 CM |
2797 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
2798 | new_block->idstr); | |
2799 | abort(); | |
2800 | } | |
2801 | } | |
c5705a77 AK |
2802 | } |
2803 | ||
2804 | ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, | |
2805 | MemoryRegion *mr) | |
2806 | { | |
2807 | RAMBlock *new_block; | |
2808 | ||
2809 | size = TARGET_PAGE_ALIGN(size); | |
2810 | new_block = g_malloc0(sizeof(*new_block)); | |
84b89d78 | 2811 | |
7c637366 | 2812 | new_block->mr = mr; |
432d268c | 2813 | new_block->offset = find_ram_offset(size); |
6977dfe6 YT |
2814 | if (host) { |
2815 | new_block->host = host; | |
cd19cfa2 | 2816 | new_block->flags |= RAM_PREALLOC_MASK; |
6977dfe6 YT |
2817 | } else { |
2818 | if (mem_path) { | |
c902760f | 2819 | #if defined (__linux__) && !defined(TARGET_S390X) |
6977dfe6 YT |
2820 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
2821 | if (!new_block->host) { | |
2822 | new_block->host = qemu_vmalloc(size); | |
e78815a5 | 2823 | qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE); |
6977dfe6 | 2824 | } |
c902760f | 2825 | #else |
6977dfe6 YT |
2826 | fprintf(stderr, "-mem-path option unsupported\n"); |
2827 | exit(1); | |
c902760f | 2828 | #endif |
6977dfe6 | 2829 | } else { |
6b02494d | 2830 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) |
ff83678a CB |
2831 | /* S390 KVM requires the topmost vma of the RAM to be smaller than |
2832 | an system defined value, which is at least 256GB. Larger systems | |
2833 | have larger values. We put the guest between the end of data | |
2834 | segment (system break) and this value. We use 32GB as a base to | |
2835 | have enough room for the system break to grow. */ | |
2836 | new_block->host = mmap((void*)0x800000000, size, | |
6977dfe6 | 2837 | PROT_EXEC|PROT_READ|PROT_WRITE, |
ff83678a | 2838 | MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0); |
fb8b2735 AG |
2839 | if (new_block->host == MAP_FAILED) { |
2840 | fprintf(stderr, "Allocating RAM failed\n"); | |
2841 | abort(); | |
2842 | } | |
6b02494d | 2843 | #else |
868bb33f | 2844 | if (xen_enabled()) { |
fce537d4 | 2845 | xen_ram_alloc(new_block->offset, size, mr); |
432d268c JN |
2846 | } else { |
2847 | new_block->host = qemu_vmalloc(size); | |
2848 | } | |
6b02494d | 2849 | #endif |
e78815a5 | 2850 | qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE); |
6977dfe6 | 2851 | } |
c902760f | 2852 | } |
94a6b54f PB |
2853 | new_block->length = size; |
2854 | ||
f471a17e | 2855 | QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next); |
94a6b54f | 2856 | |
7267c094 | 2857 | ram_list.phys_dirty = g_realloc(ram_list.phys_dirty, |
04b16653 | 2858 | last_ram_offset() >> TARGET_PAGE_BITS); |
d17b5288 | 2859 | memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), |
94a6b54f PB |
2860 | 0xff, size >> TARGET_PAGE_BITS); |
2861 | ||
6f0437e8 JK |
2862 | if (kvm_enabled()) |
2863 | kvm_setup_guest_memory(new_block->host, size); | |
2864 | ||
94a6b54f PB |
2865 | return new_block->offset; |
2866 | } | |
e9a1ab19 | 2867 | |
c5705a77 | 2868 | ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) |
6977dfe6 | 2869 | { |
c5705a77 | 2870 | return qemu_ram_alloc_from_ptr(size, NULL, mr); |
6977dfe6 YT |
2871 | } |
2872 | ||
1f2e98b6 AW |
2873 | void qemu_ram_free_from_ptr(ram_addr_t addr) |
2874 | { | |
2875 | RAMBlock *block; | |
2876 | ||
2877 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2878 | if (addr == block->offset) { | |
2879 | QLIST_REMOVE(block, next); | |
7267c094 | 2880 | g_free(block); |
1f2e98b6 AW |
2881 | return; |
2882 | } | |
2883 | } | |
2884 | } | |
2885 | ||
c227f099 | 2886 | void qemu_ram_free(ram_addr_t addr) |
e9a1ab19 | 2887 | { |
04b16653 AW |
2888 | RAMBlock *block; |
2889 | ||
2890 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2891 | if (addr == block->offset) { | |
2892 | QLIST_REMOVE(block, next); | |
cd19cfa2 HY |
2893 | if (block->flags & RAM_PREALLOC_MASK) { |
2894 | ; | |
2895 | } else if (mem_path) { | |
04b16653 AW |
2896 | #if defined (__linux__) && !defined(TARGET_S390X) |
2897 | if (block->fd) { | |
2898 | munmap(block->host, block->length); | |
2899 | close(block->fd); | |
2900 | } else { | |
2901 | qemu_vfree(block->host); | |
2902 | } | |
fd28aa13 JK |
2903 | #else |
2904 | abort(); | |
04b16653 AW |
2905 | #endif |
2906 | } else { | |
2907 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
2908 | munmap(block->host, block->length); | |
2909 | #else | |
868bb33f | 2910 | if (xen_enabled()) { |
e41d7c69 | 2911 | xen_invalidate_map_cache_entry(block->host); |
432d268c JN |
2912 | } else { |
2913 | qemu_vfree(block->host); | |
2914 | } | |
04b16653 AW |
2915 | #endif |
2916 | } | |
7267c094 | 2917 | g_free(block); |
04b16653 AW |
2918 | return; |
2919 | } | |
2920 | } | |
2921 | ||
e9a1ab19 FB |
2922 | } |
2923 | ||
cd19cfa2 HY |
2924 | #ifndef _WIN32 |
2925 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) | |
2926 | { | |
2927 | RAMBlock *block; | |
2928 | ram_addr_t offset; | |
2929 | int flags; | |
2930 | void *area, *vaddr; | |
2931 | ||
2932 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2933 | offset = addr - block->offset; | |
2934 | if (offset < block->length) { | |
2935 | vaddr = block->host + offset; | |
2936 | if (block->flags & RAM_PREALLOC_MASK) { | |
2937 | ; | |
2938 | } else { | |
2939 | flags = MAP_FIXED; | |
2940 | munmap(vaddr, length); | |
2941 | if (mem_path) { | |
2942 | #if defined(__linux__) && !defined(TARGET_S390X) | |
2943 | if (block->fd) { | |
2944 | #ifdef MAP_POPULATE | |
2945 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : | |
2946 | MAP_PRIVATE; | |
2947 | #else | |
2948 | flags |= MAP_PRIVATE; | |
2949 | #endif | |
2950 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2951 | flags, block->fd, offset); | |
2952 | } else { | |
2953 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
2954 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2955 | flags, -1, 0); | |
2956 | } | |
fd28aa13 JK |
2957 | #else |
2958 | abort(); | |
cd19cfa2 HY |
2959 | #endif |
2960 | } else { | |
2961 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
2962 | flags |= MAP_SHARED | MAP_ANONYMOUS; | |
2963 | area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE, | |
2964 | flags, -1, 0); | |
2965 | #else | |
2966 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
2967 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2968 | flags, -1, 0); | |
2969 | #endif | |
2970 | } | |
2971 | if (area != vaddr) { | |
f15fbc4b AP |
2972 | fprintf(stderr, "Could not remap addr: " |
2973 | RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n", | |
cd19cfa2 HY |
2974 | length, addr); |
2975 | exit(1); | |
2976 | } | |
2977 | qemu_madvise(vaddr, length, QEMU_MADV_MERGEABLE); | |
2978 | } | |
2979 | return; | |
2980 | } | |
2981 | } | |
2982 | } | |
2983 | #endif /* !_WIN32 */ | |
2984 | ||
dc828ca1 | 2985 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
5579c7f3 PB |
2986 | With the exception of the softmmu code in this file, this should |
2987 | only be used for local memory (e.g. video ram) that the device owns, | |
2988 | and knows it isn't going to access beyond the end of the block. | |
2989 | ||
2990 | It should not be used for general purpose DMA. | |
2991 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. | |
2992 | */ | |
c227f099 | 2993 | void *qemu_get_ram_ptr(ram_addr_t addr) |
dc828ca1 | 2994 | { |
94a6b54f PB |
2995 | RAMBlock *block; |
2996 | ||
f471a17e AW |
2997 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
2998 | if (addr - block->offset < block->length) { | |
7d82af38 VP |
2999 | /* Move this entry to to start of the list. */ |
3000 | if (block != QLIST_FIRST(&ram_list.blocks)) { | |
3001 | QLIST_REMOVE(block, next); | |
3002 | QLIST_INSERT_HEAD(&ram_list.blocks, block, next); | |
3003 | } | |
868bb33f | 3004 | if (xen_enabled()) { |
432d268c JN |
3005 | /* We need to check if the requested address is in the RAM |
3006 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 3007 | * In that case just map until the end of the page. |
432d268c JN |
3008 | */ |
3009 | if (block->offset == 0) { | |
e41d7c69 | 3010 | return xen_map_cache(addr, 0, 0); |
432d268c | 3011 | } else if (block->host == NULL) { |
e41d7c69 JK |
3012 | block->host = |
3013 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
3014 | } |
3015 | } | |
f471a17e AW |
3016 | return block->host + (addr - block->offset); |
3017 | } | |
94a6b54f | 3018 | } |
f471a17e AW |
3019 | |
3020 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
3021 | abort(); | |
3022 | ||
3023 | return NULL; | |
dc828ca1 PB |
3024 | } |
3025 | ||
b2e0a138 MT |
3026 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
3027 | * Same as qemu_get_ram_ptr but avoid reordering ramblocks. | |
3028 | */ | |
3029 | void *qemu_safe_ram_ptr(ram_addr_t addr) | |
3030 | { | |
3031 | RAMBlock *block; | |
3032 | ||
3033 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
3034 | if (addr - block->offset < block->length) { | |
868bb33f | 3035 | if (xen_enabled()) { |
432d268c JN |
3036 | /* We need to check if the requested address is in the RAM |
3037 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 3038 | * In that case just map until the end of the page. |
432d268c JN |
3039 | */ |
3040 | if (block->offset == 0) { | |
e41d7c69 | 3041 | return xen_map_cache(addr, 0, 0); |
432d268c | 3042 | } else if (block->host == NULL) { |
e41d7c69 JK |
3043 | block->host = |
3044 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
3045 | } |
3046 | } | |
b2e0a138 MT |
3047 | return block->host + (addr - block->offset); |
3048 | } | |
3049 | } | |
3050 | ||
3051 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
3052 | abort(); | |
3053 | ||
3054 | return NULL; | |
3055 | } | |
3056 | ||
38bee5dc SS |
3057 | /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr |
3058 | * but takes a size argument */ | |
8ab934f9 | 3059 | void *qemu_ram_ptr_length(ram_addr_t addr, ram_addr_t *size) |
38bee5dc | 3060 | { |
8ab934f9 SS |
3061 | if (*size == 0) { |
3062 | return NULL; | |
3063 | } | |
868bb33f | 3064 | if (xen_enabled()) { |
e41d7c69 | 3065 | return xen_map_cache(addr, *size, 1); |
868bb33f | 3066 | } else { |
38bee5dc SS |
3067 | RAMBlock *block; |
3068 | ||
3069 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
3070 | if (addr - block->offset < block->length) { | |
3071 | if (addr - block->offset + *size > block->length) | |
3072 | *size = block->length - addr + block->offset; | |
3073 | return block->host + (addr - block->offset); | |
3074 | } | |
3075 | } | |
3076 | ||
3077 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
3078 | abort(); | |
38bee5dc SS |
3079 | } |
3080 | } | |
3081 | ||
050a0ddf AP |
3082 | void qemu_put_ram_ptr(void *addr) |
3083 | { | |
3084 | trace_qemu_put_ram_ptr(addr); | |
050a0ddf AP |
3085 | } |
3086 | ||
e890261f | 3087 | int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
5579c7f3 | 3088 | { |
94a6b54f PB |
3089 | RAMBlock *block; |
3090 | uint8_t *host = ptr; | |
3091 | ||
868bb33f | 3092 | if (xen_enabled()) { |
e41d7c69 | 3093 | *ram_addr = xen_ram_addr_from_mapcache(ptr); |
712c2b41 SS |
3094 | return 0; |
3095 | } | |
3096 | ||
f471a17e | 3097 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
432d268c JN |
3098 | /* This case append when the block is not mapped. */ |
3099 | if (block->host == NULL) { | |
3100 | continue; | |
3101 | } | |
f471a17e | 3102 | if (host - block->host < block->length) { |
e890261f MT |
3103 | *ram_addr = block->offset + (host - block->host); |
3104 | return 0; | |
f471a17e | 3105 | } |
94a6b54f | 3106 | } |
432d268c | 3107 | |
e890261f MT |
3108 | return -1; |
3109 | } | |
f471a17e | 3110 | |
e890261f MT |
3111 | /* Some of the softmmu routines need to translate from a host pointer |
3112 | (typically a TLB entry) back to a ram offset. */ | |
3113 | ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr) | |
3114 | { | |
3115 | ram_addr_t ram_addr; | |
f471a17e | 3116 | |
e890261f MT |
3117 | if (qemu_ram_addr_from_host(ptr, &ram_addr)) { |
3118 | fprintf(stderr, "Bad ram pointer %p\n", ptr); | |
3119 | abort(); | |
3120 | } | |
3121 | return ram_addr; | |
5579c7f3 PB |
3122 | } |
3123 | ||
0e0df1e2 AK |
3124 | static uint64_t unassigned_mem_read(void *opaque, target_phys_addr_t addr, |
3125 | unsigned size) | |
e18231a3 BS |
3126 | { |
3127 | #ifdef DEBUG_UNASSIGNED | |
3128 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); | |
3129 | #endif | |
5b450407 | 3130 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 3131 | cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size); |
e18231a3 BS |
3132 | #endif |
3133 | return 0; | |
3134 | } | |
3135 | ||
0e0df1e2 AK |
3136 | static void unassigned_mem_write(void *opaque, target_phys_addr_t addr, |
3137 | uint64_t val, unsigned size) | |
e18231a3 BS |
3138 | { |
3139 | #ifdef DEBUG_UNASSIGNED | |
0e0df1e2 | 3140 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); |
e18231a3 | 3141 | #endif |
5b450407 | 3142 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 3143 | cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size); |
67d3b957 | 3144 | #endif |
33417e70 FB |
3145 | } |
3146 | ||
0e0df1e2 AK |
3147 | static const MemoryRegionOps unassigned_mem_ops = { |
3148 | .read = unassigned_mem_read, | |
3149 | .write = unassigned_mem_write, | |
3150 | .endianness = DEVICE_NATIVE_ENDIAN, | |
3151 | }; | |
e18231a3 | 3152 | |
0e0df1e2 AK |
3153 | static uint64_t error_mem_read(void *opaque, target_phys_addr_t addr, |
3154 | unsigned size) | |
e18231a3 | 3155 | { |
0e0df1e2 | 3156 | abort(); |
e18231a3 BS |
3157 | } |
3158 | ||
0e0df1e2 AK |
3159 | static void error_mem_write(void *opaque, target_phys_addr_t addr, |
3160 | uint64_t value, unsigned size) | |
e18231a3 | 3161 | { |
0e0df1e2 | 3162 | abort(); |
33417e70 FB |
3163 | } |
3164 | ||
0e0df1e2 AK |
3165 | static const MemoryRegionOps error_mem_ops = { |
3166 | .read = error_mem_read, | |
3167 | .write = error_mem_write, | |
3168 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
3169 | }; |
3170 | ||
0e0df1e2 AK |
3171 | static const MemoryRegionOps rom_mem_ops = { |
3172 | .read = error_mem_read, | |
3173 | .write = unassigned_mem_write, | |
3174 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
3175 | }; |
3176 | ||
0e0df1e2 AK |
3177 | static void notdirty_mem_write(void *opaque, target_phys_addr_t ram_addr, |
3178 | uint64_t val, unsigned size) | |
9fa3e853 | 3179 | { |
3a7d929e | 3180 | int dirty_flags; |
f7c11b53 | 3181 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 3182 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
9fa3e853 | 3183 | #if !defined(CONFIG_USER_ONLY) |
0e0df1e2 | 3184 | tb_invalidate_phys_page_fast(ram_addr, size); |
f7c11b53 | 3185 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
9fa3e853 | 3186 | #endif |
3a7d929e | 3187 | } |
0e0df1e2 AK |
3188 | switch (size) { |
3189 | case 1: | |
3190 | stb_p(qemu_get_ram_ptr(ram_addr), val); | |
3191 | break; | |
3192 | case 2: | |
3193 | stw_p(qemu_get_ram_ptr(ram_addr), val); | |
3194 | break; | |
3195 | case 4: | |
3196 | stl_p(qemu_get_ram_ptr(ram_addr), val); | |
3197 | break; | |
3198 | default: | |
3199 | abort(); | |
3a7d929e | 3200 | } |
f23db169 | 3201 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
f7c11b53 | 3202 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
f23db169 FB |
3203 | /* we remove the notdirty callback only if the code has been |
3204 | flushed */ | |
3205 | if (dirty_flags == 0xff) | |
2e70f6ef | 3206 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
9fa3e853 FB |
3207 | } |
3208 | ||
0e0df1e2 AK |
3209 | static const MemoryRegionOps notdirty_mem_ops = { |
3210 | .read = error_mem_read, | |
3211 | .write = notdirty_mem_write, | |
3212 | .endianness = DEVICE_NATIVE_ENDIAN, | |
1ccde1cb FB |
3213 | }; |
3214 | ||
0f459d16 | 3215 | /* Generate a debug exception if a watchpoint has been hit. */ |
b4051334 | 3216 | static void check_watchpoint(int offset, int len_mask, int flags) |
0f459d16 PB |
3217 | { |
3218 | CPUState *env = cpu_single_env; | |
06d55cc1 AL |
3219 | target_ulong pc, cs_base; |
3220 | TranslationBlock *tb; | |
0f459d16 | 3221 | target_ulong vaddr; |
a1d1bb31 | 3222 | CPUWatchpoint *wp; |
06d55cc1 | 3223 | int cpu_flags; |
0f459d16 | 3224 | |
06d55cc1 AL |
3225 | if (env->watchpoint_hit) { |
3226 | /* We re-entered the check after replacing the TB. Now raise | |
3227 | * the debug interrupt so that is will trigger after the | |
3228 | * current instruction. */ | |
3229 | cpu_interrupt(env, CPU_INTERRUPT_DEBUG); | |
3230 | return; | |
3231 | } | |
2e70f6ef | 3232 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
72cf2d4f | 3233 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 AL |
3234 | if ((vaddr == (wp->vaddr & len_mask) || |
3235 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { | |
6e140f28 AL |
3236 | wp->flags |= BP_WATCHPOINT_HIT; |
3237 | if (!env->watchpoint_hit) { | |
3238 | env->watchpoint_hit = wp; | |
3239 | tb = tb_find_pc(env->mem_io_pc); | |
3240 | if (!tb) { | |
3241 | cpu_abort(env, "check_watchpoint: could not find TB for " | |
3242 | "pc=%p", (void *)env->mem_io_pc); | |
3243 | } | |
618ba8e6 | 3244 | cpu_restore_state(tb, env, env->mem_io_pc); |
6e140f28 AL |
3245 | tb_phys_invalidate(tb, -1); |
3246 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { | |
3247 | env->exception_index = EXCP_DEBUG; | |
3248 | } else { | |
3249 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); | |
3250 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); | |
3251 | } | |
3252 | cpu_resume_from_signal(env, NULL); | |
06d55cc1 | 3253 | } |
6e140f28 AL |
3254 | } else { |
3255 | wp->flags &= ~BP_WATCHPOINT_HIT; | |
0f459d16 PB |
3256 | } |
3257 | } | |
3258 | } | |
3259 | ||
6658ffb8 PB |
3260 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
3261 | so these check for a hit then pass through to the normal out-of-line | |
3262 | phys routines. */ | |
c227f099 | 3263 | static uint32_t watch_mem_readb(void *opaque, target_phys_addr_t addr) |
6658ffb8 | 3264 | { |
b4051334 | 3265 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x0, BP_MEM_READ); |
6658ffb8 PB |
3266 | return ldub_phys(addr); |
3267 | } | |
3268 | ||
c227f099 | 3269 | static uint32_t watch_mem_readw(void *opaque, target_phys_addr_t addr) |
6658ffb8 | 3270 | { |
b4051334 | 3271 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x1, BP_MEM_READ); |
6658ffb8 PB |
3272 | return lduw_phys(addr); |
3273 | } | |
3274 | ||
c227f099 | 3275 | static uint32_t watch_mem_readl(void *opaque, target_phys_addr_t addr) |
6658ffb8 | 3276 | { |
b4051334 | 3277 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x3, BP_MEM_READ); |
6658ffb8 PB |
3278 | return ldl_phys(addr); |
3279 | } | |
3280 | ||
c227f099 | 3281 | static void watch_mem_writeb(void *opaque, target_phys_addr_t addr, |
6658ffb8 PB |
3282 | uint32_t val) |
3283 | { | |
b4051334 | 3284 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x0, BP_MEM_WRITE); |
6658ffb8 PB |
3285 | stb_phys(addr, val); |
3286 | } | |
3287 | ||
c227f099 | 3288 | static void watch_mem_writew(void *opaque, target_phys_addr_t addr, |
6658ffb8 PB |
3289 | uint32_t val) |
3290 | { | |
b4051334 | 3291 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x1, BP_MEM_WRITE); |
6658ffb8 PB |
3292 | stw_phys(addr, val); |
3293 | } | |
3294 | ||
c227f099 | 3295 | static void watch_mem_writel(void *opaque, target_phys_addr_t addr, |
6658ffb8 PB |
3296 | uint32_t val) |
3297 | { | |
b4051334 | 3298 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x3, BP_MEM_WRITE); |
6658ffb8 PB |
3299 | stl_phys(addr, val); |
3300 | } | |
3301 | ||
d60efc6b | 3302 | static CPUReadMemoryFunc * const watch_mem_read[3] = { |
6658ffb8 PB |
3303 | watch_mem_readb, |
3304 | watch_mem_readw, | |
3305 | watch_mem_readl, | |
3306 | }; | |
3307 | ||
d60efc6b | 3308 | static CPUWriteMemoryFunc * const watch_mem_write[3] = { |
6658ffb8 PB |
3309 | watch_mem_writeb, |
3310 | watch_mem_writew, | |
3311 | watch_mem_writel, | |
3312 | }; | |
6658ffb8 | 3313 | |
70c68e44 AK |
3314 | static uint64_t subpage_read(void *opaque, target_phys_addr_t addr, |
3315 | unsigned len) | |
db7b5426 | 3316 | { |
70c68e44 | 3317 | subpage_t *mmio = opaque; |
f6405247 | 3318 | unsigned int idx = SUBPAGE_IDX(addr); |
db7b5426 BS |
3319 | #if defined(DEBUG_SUBPAGE) |
3320 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__, | |
3321 | mmio, len, addr, idx); | |
3322 | #endif | |
db7b5426 | 3323 | |
f6405247 RH |
3324 | addr += mmio->region_offset[idx]; |
3325 | idx = mmio->sub_io_index[idx]; | |
70c68e44 | 3326 | return io_mem_read(idx, addr, len); |
db7b5426 BS |
3327 | } |
3328 | ||
70c68e44 AK |
3329 | static void subpage_write(void *opaque, target_phys_addr_t addr, |
3330 | uint64_t value, unsigned len) | |
db7b5426 | 3331 | { |
70c68e44 | 3332 | subpage_t *mmio = opaque; |
f6405247 | 3333 | unsigned int idx = SUBPAGE_IDX(addr); |
db7b5426 | 3334 | #if defined(DEBUG_SUBPAGE) |
70c68e44 AK |
3335 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx |
3336 | " idx %d value %"PRIx64"\n", | |
f6405247 | 3337 | __func__, mmio, len, addr, idx, value); |
db7b5426 | 3338 | #endif |
f6405247 RH |
3339 | |
3340 | addr += mmio->region_offset[idx]; | |
3341 | idx = mmio->sub_io_index[idx]; | |
70c68e44 | 3342 | io_mem_write(idx, addr, value, len); |
db7b5426 BS |
3343 | } |
3344 | ||
70c68e44 AK |
3345 | static const MemoryRegionOps subpage_ops = { |
3346 | .read = subpage_read, | |
3347 | .write = subpage_write, | |
3348 | .endianness = DEVICE_NATIVE_ENDIAN, | |
db7b5426 BS |
3349 | }; |
3350 | ||
de712f94 AK |
3351 | static uint64_t subpage_ram_read(void *opaque, target_phys_addr_t addr, |
3352 | unsigned size) | |
56384e8b AF |
3353 | { |
3354 | ram_addr_t raddr = addr; | |
3355 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
3356 | switch (size) { |
3357 | case 1: return ldub_p(ptr); | |
3358 | case 2: return lduw_p(ptr); | |
3359 | case 4: return ldl_p(ptr); | |
3360 | default: abort(); | |
3361 | } | |
56384e8b AF |
3362 | } |
3363 | ||
de712f94 AK |
3364 | static void subpage_ram_write(void *opaque, target_phys_addr_t addr, |
3365 | uint64_t value, unsigned size) | |
56384e8b AF |
3366 | { |
3367 | ram_addr_t raddr = addr; | |
3368 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
3369 | switch (size) { |
3370 | case 1: return stb_p(ptr, value); | |
3371 | case 2: return stw_p(ptr, value); | |
3372 | case 4: return stl_p(ptr, value); | |
3373 | default: abort(); | |
3374 | } | |
56384e8b AF |
3375 | } |
3376 | ||
de712f94 AK |
3377 | static const MemoryRegionOps subpage_ram_ops = { |
3378 | .read = subpage_ram_read, | |
3379 | .write = subpage_ram_write, | |
3380 | .endianness = DEVICE_NATIVE_ENDIAN, | |
56384e8b AF |
3381 | }; |
3382 | ||
c227f099 AL |
3383 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
3384 | ram_addr_t memory, ram_addr_t region_offset) | |
db7b5426 BS |
3385 | { |
3386 | int idx, eidx; | |
3387 | ||
3388 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) | |
3389 | return -1; | |
3390 | idx = SUBPAGE_IDX(start); | |
3391 | eidx = SUBPAGE_IDX(end); | |
3392 | #if defined(DEBUG_SUBPAGE) | |
0bf9e31a | 3393 | printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, |
db7b5426 BS |
3394 | mmio, start, end, idx, eidx, memory); |
3395 | #endif | |
0e0df1e2 | 3396 | if ((memory & ~TARGET_PAGE_MASK) == io_mem_ram.ram_addr) { |
de712f94 | 3397 | memory = io_mem_subpage_ram.ram_addr; |
56384e8b | 3398 | } |
f6405247 | 3399 | memory = (memory >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
db7b5426 | 3400 | for (; idx <= eidx; idx++) { |
f6405247 RH |
3401 | mmio->sub_io_index[idx] = memory; |
3402 | mmio->region_offset[idx] = region_offset; | |
db7b5426 BS |
3403 | } |
3404 | ||
3405 | return 0; | |
3406 | } | |
3407 | ||
f6405247 RH |
3408 | static subpage_t *subpage_init (target_phys_addr_t base, ram_addr_t *phys, |
3409 | ram_addr_t orig_memory, | |
3410 | ram_addr_t region_offset) | |
db7b5426 | 3411 | { |
c227f099 | 3412 | subpage_t *mmio; |
db7b5426 BS |
3413 | int subpage_memory; |
3414 | ||
7267c094 | 3415 | mmio = g_malloc0(sizeof(subpage_t)); |
1eec614b AL |
3416 | |
3417 | mmio->base = base; | |
70c68e44 AK |
3418 | memory_region_init_io(&mmio->iomem, &subpage_ops, mmio, |
3419 | "subpage", TARGET_PAGE_SIZE); | |
3420 | subpage_memory = mmio->iomem.ram_addr; | |
db7b5426 | 3421 | #if defined(DEBUG_SUBPAGE) |
1eec614b AL |
3422 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
3423 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); | |
db7b5426 | 3424 | #endif |
1eec614b | 3425 | *phys = subpage_memory | IO_MEM_SUBPAGE; |
f6405247 | 3426 | subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, orig_memory, region_offset); |
db7b5426 BS |
3427 | |
3428 | return mmio; | |
3429 | } | |
3430 | ||
88715657 AL |
3431 | static int get_free_io_mem_idx(void) |
3432 | { | |
3433 | int i; | |
3434 | ||
3435 | for (i = 0; i<IO_MEM_NB_ENTRIES; i++) | |
3436 | if (!io_mem_used[i]) { | |
3437 | io_mem_used[i] = 1; | |
3438 | return i; | |
3439 | } | |
c6703b47 | 3440 | fprintf(stderr, "RAN out out io_mem_idx, max %d !\n", IO_MEM_NB_ENTRIES); |
88715657 AL |
3441 | return -1; |
3442 | } | |
3443 | ||
33417e70 FB |
3444 | /* mem_read and mem_write are arrays of functions containing the |
3445 | function to access byte (index 0), word (index 1) and dword (index | |
0b4e6e3e | 3446 | 2). Functions can be omitted with a NULL function pointer. |
3ee89922 | 3447 | If io_index is non zero, the corresponding io zone is |
4254fab8 BS |
3448 | modified. If it is zero, a new io zone is allocated. The return |
3449 | value can be used with cpu_register_physical_memory(). (-1) is | |
3450 | returned if error. */ | |
1eed09cb | 3451 | static int cpu_register_io_memory_fixed(int io_index, |
d60efc6b BS |
3452 | CPUReadMemoryFunc * const *mem_read, |
3453 | CPUWriteMemoryFunc * const *mem_write, | |
be675c97 | 3454 | void *opaque) |
33417e70 | 3455 | { |
3cab721d RH |
3456 | int i; |
3457 | ||
33417e70 | 3458 | if (io_index <= 0) { |
88715657 AL |
3459 | io_index = get_free_io_mem_idx(); |
3460 | if (io_index == -1) | |
3461 | return io_index; | |
33417e70 | 3462 | } else { |
1eed09cb | 3463 | io_index >>= IO_MEM_SHIFT; |
33417e70 FB |
3464 | if (io_index >= IO_MEM_NB_ENTRIES) |
3465 | return -1; | |
3466 | } | |
b5ff1b31 | 3467 | |
3cab721d | 3468 | for (i = 0; i < 3; ++i) { |
0e0df1e2 AK |
3469 | assert(mem_read[i]); |
3470 | _io_mem_read[io_index][i] = mem_read[i]; | |
3cab721d RH |
3471 | } |
3472 | for (i = 0; i < 3; ++i) { | |
0e0df1e2 AK |
3473 | assert(mem_write[i]); |
3474 | _io_mem_write[io_index][i] = mem_write[i]; | |
3cab721d | 3475 | } |
a4193c8a | 3476 | io_mem_opaque[io_index] = opaque; |
f6405247 RH |
3477 | |
3478 | return (io_index << IO_MEM_SHIFT); | |
33417e70 | 3479 | } |
61382a50 | 3480 | |
d60efc6b BS |
3481 | int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read, |
3482 | CPUWriteMemoryFunc * const *mem_write, | |
be675c97 | 3483 | void *opaque) |
1eed09cb | 3484 | { |
be675c97 | 3485 | return cpu_register_io_memory_fixed(0, mem_read, mem_write, opaque); |
1eed09cb AK |
3486 | } |
3487 | ||
88715657 AL |
3488 | void cpu_unregister_io_memory(int io_table_address) |
3489 | { | |
3490 | int i; | |
3491 | int io_index = io_table_address >> IO_MEM_SHIFT; | |
3492 | ||
3493 | for (i=0;i < 3; i++) { | |
0e0df1e2 AK |
3494 | _io_mem_read[io_index][i] = NULL; |
3495 | _io_mem_write[io_index][i] = NULL; | |
88715657 AL |
3496 | } |
3497 | io_mem_opaque[io_index] = NULL; | |
3498 | io_mem_used[io_index] = 0; | |
3499 | } | |
3500 | ||
e9179ce1 AK |
3501 | static void io_mem_init(void) |
3502 | { | |
3503 | int i; | |
3504 | ||
0e0df1e2 AK |
3505 | /* Must be first: */ |
3506 | memory_region_init_io(&io_mem_ram, &error_mem_ops, NULL, "ram", UINT64_MAX); | |
3507 | assert(io_mem_ram.ram_addr == 0); | |
3508 | memory_region_init_io(&io_mem_rom, &rom_mem_ops, NULL, "rom", UINT64_MAX); | |
3509 | memory_region_init_io(&io_mem_unassigned, &unassigned_mem_ops, NULL, | |
3510 | "unassigned", UINT64_MAX); | |
3511 | memory_region_init_io(&io_mem_notdirty, ¬dirty_mem_ops, NULL, | |
3512 | "notdirty", UINT64_MAX); | |
de712f94 AK |
3513 | memory_region_init_io(&io_mem_subpage_ram, &subpage_ram_ops, NULL, |
3514 | "subpage-ram", UINT64_MAX); | |
e9179ce1 AK |
3515 | for (i=0; i<5; i++) |
3516 | io_mem_used[i] = 1; | |
3517 | ||
3518 | io_mem_watch = cpu_register_io_memory(watch_mem_read, | |
be675c97 | 3519 | watch_mem_write, NULL); |
e9179ce1 AK |
3520 | } |
3521 | ||
62152b8a AK |
3522 | static void memory_map_init(void) |
3523 | { | |
7267c094 | 3524 | system_memory = g_malloc(sizeof(*system_memory)); |
8417cebf | 3525 | memory_region_init(system_memory, "system", INT64_MAX); |
62152b8a | 3526 | set_system_memory_map(system_memory); |
309cb471 | 3527 | |
7267c094 | 3528 | system_io = g_malloc(sizeof(*system_io)); |
309cb471 AK |
3529 | memory_region_init(system_io, "io", 65536); |
3530 | set_system_io_map(system_io); | |
62152b8a AK |
3531 | } |
3532 | ||
3533 | MemoryRegion *get_system_memory(void) | |
3534 | { | |
3535 | return system_memory; | |
3536 | } | |
3537 | ||
309cb471 AK |
3538 | MemoryRegion *get_system_io(void) |
3539 | { | |
3540 | return system_io; | |
3541 | } | |
3542 | ||
e2eef170 PB |
3543 | #endif /* !defined(CONFIG_USER_ONLY) */ |
3544 | ||
13eb76e0 FB |
3545 | /* physical memory access (slow version, mainly for debug) */ |
3546 | #if defined(CONFIG_USER_ONLY) | |
a68fe89c PB |
3547 | int cpu_memory_rw_debug(CPUState *env, target_ulong addr, |
3548 | uint8_t *buf, int len, int is_write) | |
13eb76e0 FB |
3549 | { |
3550 | int l, flags; | |
3551 | target_ulong page; | |
53a5960a | 3552 | void * p; |
13eb76e0 FB |
3553 | |
3554 | while (len > 0) { | |
3555 | page = addr & TARGET_PAGE_MASK; | |
3556 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3557 | if (l > len) | |
3558 | l = len; | |
3559 | flags = page_get_flags(page); | |
3560 | if (!(flags & PAGE_VALID)) | |
a68fe89c | 3561 | return -1; |
13eb76e0 FB |
3562 | if (is_write) { |
3563 | if (!(flags & PAGE_WRITE)) | |
a68fe89c | 3564 | return -1; |
579a97f7 | 3565 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 3566 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
a68fe89c | 3567 | return -1; |
72fb7daa AJ |
3568 | memcpy(p, buf, l); |
3569 | unlock_user(p, addr, l); | |
13eb76e0 FB |
3570 | } else { |
3571 | if (!(flags & PAGE_READ)) | |
a68fe89c | 3572 | return -1; |
579a97f7 | 3573 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 3574 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
a68fe89c | 3575 | return -1; |
72fb7daa | 3576 | memcpy(buf, p, l); |
5b257578 | 3577 | unlock_user(p, addr, 0); |
13eb76e0 FB |
3578 | } |
3579 | len -= l; | |
3580 | buf += l; | |
3581 | addr += l; | |
3582 | } | |
a68fe89c | 3583 | return 0; |
13eb76e0 | 3584 | } |
8df1cd07 | 3585 | |
13eb76e0 | 3586 | #else |
c227f099 | 3587 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
13eb76e0 FB |
3588 | int len, int is_write) |
3589 | { | |
3590 | int l, io_index; | |
3591 | uint8_t *ptr; | |
3592 | uint32_t val; | |
c227f099 | 3593 | target_phys_addr_t page; |
8ca5692d | 3594 | ram_addr_t pd; |
f1f6e3b8 | 3595 | PhysPageDesc p; |
3b46e624 | 3596 | |
13eb76e0 FB |
3597 | while (len > 0) { |
3598 | page = addr & TARGET_PAGE_MASK; | |
3599 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3600 | if (l > len) | |
3601 | l = len; | |
92e873b9 | 3602 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
f1f6e3b8 | 3603 | pd = p.phys_offset; |
3b46e624 | 3604 | |
13eb76e0 | 3605 | if (is_write) { |
0e0df1e2 | 3606 | if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { |
f1f6e3b8 | 3607 | target_phys_addr_t addr1; |
13eb76e0 | 3608 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
f1f6e3b8 | 3609 | addr1 = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
6a00d601 FB |
3610 | /* XXX: could force cpu_single_env to NULL to avoid |
3611 | potential bugs */ | |
6c2934db | 3612 | if (l >= 4 && ((addr1 & 3) == 0)) { |
1c213d19 | 3613 | /* 32 bit write access */ |
c27004ec | 3614 | val = ldl_p(buf); |
acbbec5d | 3615 | io_mem_write(io_index, addr1, val, 4); |
13eb76e0 | 3616 | l = 4; |
6c2934db | 3617 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
1c213d19 | 3618 | /* 16 bit write access */ |
c27004ec | 3619 | val = lduw_p(buf); |
acbbec5d | 3620 | io_mem_write(io_index, addr1, val, 2); |
13eb76e0 FB |
3621 | l = 2; |
3622 | } else { | |
1c213d19 | 3623 | /* 8 bit write access */ |
c27004ec | 3624 | val = ldub_p(buf); |
acbbec5d | 3625 | io_mem_write(io_index, addr1, val, 1); |
13eb76e0 FB |
3626 | l = 1; |
3627 | } | |
3628 | } else { | |
8ca5692d | 3629 | ram_addr_t addr1; |
b448f2f3 | 3630 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
13eb76e0 | 3631 | /* RAM case */ |
5579c7f3 | 3632 | ptr = qemu_get_ram_ptr(addr1); |
13eb76e0 | 3633 | memcpy(ptr, buf, l); |
3a7d929e FB |
3634 | if (!cpu_physical_memory_is_dirty(addr1)) { |
3635 | /* invalidate code */ | |
3636 | tb_invalidate_phys_page_range(addr1, addr1 + l, 0); | |
3637 | /* set dirty bit */ | |
f7c11b53 YT |
3638 | cpu_physical_memory_set_dirty_flags( |
3639 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
3a7d929e | 3640 | } |
050a0ddf | 3641 | qemu_put_ram_ptr(ptr); |
13eb76e0 FB |
3642 | } |
3643 | } else { | |
1d393fa2 | 3644 | if (!is_ram_rom_romd(pd)) { |
f1f6e3b8 | 3645 | target_phys_addr_t addr1; |
13eb76e0 FB |
3646 | /* I/O case */ |
3647 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); | |
f1f6e3b8 | 3648 | addr1 = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
6c2934db | 3649 | if (l >= 4 && ((addr1 & 3) == 0)) { |
13eb76e0 | 3650 | /* 32 bit read access */ |
acbbec5d | 3651 | val = io_mem_read(io_index, addr1, 4); |
c27004ec | 3652 | stl_p(buf, val); |
13eb76e0 | 3653 | l = 4; |
6c2934db | 3654 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
13eb76e0 | 3655 | /* 16 bit read access */ |
acbbec5d | 3656 | val = io_mem_read(io_index, addr1, 2); |
c27004ec | 3657 | stw_p(buf, val); |
13eb76e0 FB |
3658 | l = 2; |
3659 | } else { | |
1c213d19 | 3660 | /* 8 bit read access */ |
acbbec5d | 3661 | val = io_mem_read(io_index, addr1, 1); |
c27004ec | 3662 | stb_p(buf, val); |
13eb76e0 FB |
3663 | l = 1; |
3664 | } | |
3665 | } else { | |
3666 | /* RAM case */ | |
050a0ddf AP |
3667 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK); |
3668 | memcpy(buf, ptr + (addr & ~TARGET_PAGE_MASK), l); | |
3669 | qemu_put_ram_ptr(ptr); | |
13eb76e0 FB |
3670 | } |
3671 | } | |
3672 | len -= l; | |
3673 | buf += l; | |
3674 | addr += l; | |
3675 | } | |
3676 | } | |
8df1cd07 | 3677 | |
d0ecd2aa | 3678 | /* used for ROM loading : can write in RAM and ROM */ |
c227f099 | 3679 | void cpu_physical_memory_write_rom(target_phys_addr_t addr, |
d0ecd2aa FB |
3680 | const uint8_t *buf, int len) |
3681 | { | |
3682 | int l; | |
3683 | uint8_t *ptr; | |
c227f099 | 3684 | target_phys_addr_t page; |
d0ecd2aa | 3685 | unsigned long pd; |
f1f6e3b8 | 3686 | PhysPageDesc p; |
3b46e624 | 3687 | |
d0ecd2aa FB |
3688 | while (len > 0) { |
3689 | page = addr & TARGET_PAGE_MASK; | |
3690 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3691 | if (l > len) | |
3692 | l = len; | |
3693 | p = phys_page_find(page >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 3694 | pd = p.phys_offset; |
3b46e624 | 3695 | |
1d393fa2 | 3696 | if (!is_ram_rom_romd(pd)) { |
d0ecd2aa FB |
3697 | /* do nothing */ |
3698 | } else { | |
3699 | unsigned long addr1; | |
3700 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); | |
3701 | /* ROM/RAM case */ | |
5579c7f3 | 3702 | ptr = qemu_get_ram_ptr(addr1); |
d0ecd2aa | 3703 | memcpy(ptr, buf, l); |
050a0ddf | 3704 | qemu_put_ram_ptr(ptr); |
d0ecd2aa FB |
3705 | } |
3706 | len -= l; | |
3707 | buf += l; | |
3708 | addr += l; | |
3709 | } | |
3710 | } | |
3711 | ||
6d16c2f8 AL |
3712 | typedef struct { |
3713 | void *buffer; | |
c227f099 AL |
3714 | target_phys_addr_t addr; |
3715 | target_phys_addr_t len; | |
6d16c2f8 AL |
3716 | } BounceBuffer; |
3717 | ||
3718 | static BounceBuffer bounce; | |
3719 | ||
ba223c29 AL |
3720 | typedef struct MapClient { |
3721 | void *opaque; | |
3722 | void (*callback)(void *opaque); | |
72cf2d4f | 3723 | QLIST_ENTRY(MapClient) link; |
ba223c29 AL |
3724 | } MapClient; |
3725 | ||
72cf2d4f BS |
3726 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
3727 | = QLIST_HEAD_INITIALIZER(map_client_list); | |
ba223c29 AL |
3728 | |
3729 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) | |
3730 | { | |
7267c094 | 3731 | MapClient *client = g_malloc(sizeof(*client)); |
ba223c29 AL |
3732 | |
3733 | client->opaque = opaque; | |
3734 | client->callback = callback; | |
72cf2d4f | 3735 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
ba223c29 AL |
3736 | return client; |
3737 | } | |
3738 | ||
3739 | void cpu_unregister_map_client(void *_client) | |
3740 | { | |
3741 | MapClient *client = (MapClient *)_client; | |
3742 | ||
72cf2d4f | 3743 | QLIST_REMOVE(client, link); |
7267c094 | 3744 | g_free(client); |
ba223c29 AL |
3745 | } |
3746 | ||
3747 | static void cpu_notify_map_clients(void) | |
3748 | { | |
3749 | MapClient *client; | |
3750 | ||
72cf2d4f BS |
3751 | while (!QLIST_EMPTY(&map_client_list)) { |
3752 | client = QLIST_FIRST(&map_client_list); | |
ba223c29 | 3753 | client->callback(client->opaque); |
34d5e948 | 3754 | cpu_unregister_map_client(client); |
ba223c29 AL |
3755 | } |
3756 | } | |
3757 | ||
6d16c2f8 AL |
3758 | /* Map a physical memory region into a host virtual address. |
3759 | * May map a subset of the requested range, given by and returned in *plen. | |
3760 | * May return NULL if resources needed to perform the mapping are exhausted. | |
3761 | * Use only for reads OR writes - not for read-modify-write operations. | |
ba223c29 AL |
3762 | * Use cpu_register_map_client() to know when retrying the map operation is |
3763 | * likely to succeed. | |
6d16c2f8 | 3764 | */ |
c227f099 AL |
3765 | void *cpu_physical_memory_map(target_phys_addr_t addr, |
3766 | target_phys_addr_t *plen, | |
6d16c2f8 AL |
3767 | int is_write) |
3768 | { | |
c227f099 | 3769 | target_phys_addr_t len = *plen; |
38bee5dc | 3770 | target_phys_addr_t todo = 0; |
6d16c2f8 | 3771 | int l; |
c227f099 | 3772 | target_phys_addr_t page; |
6d16c2f8 | 3773 | unsigned long pd; |
f1f6e3b8 | 3774 | PhysPageDesc p; |
f15fbc4b | 3775 | ram_addr_t raddr = RAM_ADDR_MAX; |
8ab934f9 SS |
3776 | ram_addr_t rlen; |
3777 | void *ret; | |
6d16c2f8 AL |
3778 | |
3779 | while (len > 0) { | |
3780 | page = addr & TARGET_PAGE_MASK; | |
3781 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3782 | if (l > len) | |
3783 | l = len; | |
3784 | p = phys_page_find(page >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 3785 | pd = p.phys_offset; |
6d16c2f8 | 3786 | |
0e0df1e2 | 3787 | if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { |
38bee5dc | 3788 | if (todo || bounce.buffer) { |
6d16c2f8 AL |
3789 | break; |
3790 | } | |
3791 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); | |
3792 | bounce.addr = addr; | |
3793 | bounce.len = l; | |
3794 | if (!is_write) { | |
54f7b4a3 | 3795 | cpu_physical_memory_read(addr, bounce.buffer, l); |
6d16c2f8 | 3796 | } |
38bee5dc SS |
3797 | |
3798 | *plen = l; | |
3799 | return bounce.buffer; | |
6d16c2f8 | 3800 | } |
8ab934f9 SS |
3801 | if (!todo) { |
3802 | raddr = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); | |
3803 | } | |
6d16c2f8 AL |
3804 | |
3805 | len -= l; | |
3806 | addr += l; | |
38bee5dc | 3807 | todo += l; |
6d16c2f8 | 3808 | } |
8ab934f9 SS |
3809 | rlen = todo; |
3810 | ret = qemu_ram_ptr_length(raddr, &rlen); | |
3811 | *plen = rlen; | |
3812 | return ret; | |
6d16c2f8 AL |
3813 | } |
3814 | ||
3815 | /* Unmaps a memory region previously mapped by cpu_physical_memory_map(). | |
3816 | * Will also mark the memory as dirty if is_write == 1. access_len gives | |
3817 | * the amount of memory that was actually read or written by the caller. | |
3818 | */ | |
c227f099 AL |
3819 | void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, |
3820 | int is_write, target_phys_addr_t access_len) | |
6d16c2f8 AL |
3821 | { |
3822 | if (buffer != bounce.buffer) { | |
3823 | if (is_write) { | |
e890261f | 3824 | ram_addr_t addr1 = qemu_ram_addr_from_host_nofail(buffer); |
6d16c2f8 AL |
3825 | while (access_len) { |
3826 | unsigned l; | |
3827 | l = TARGET_PAGE_SIZE; | |
3828 | if (l > access_len) | |
3829 | l = access_len; | |
3830 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
3831 | /* invalidate code */ | |
3832 | tb_invalidate_phys_page_range(addr1, addr1 + l, 0); | |
3833 | /* set dirty bit */ | |
f7c11b53 YT |
3834 | cpu_physical_memory_set_dirty_flags( |
3835 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
6d16c2f8 AL |
3836 | } |
3837 | addr1 += l; | |
3838 | access_len -= l; | |
3839 | } | |
3840 | } | |
868bb33f | 3841 | if (xen_enabled()) { |
e41d7c69 | 3842 | xen_invalidate_map_cache_entry(buffer); |
050a0ddf | 3843 | } |
6d16c2f8 AL |
3844 | return; |
3845 | } | |
3846 | if (is_write) { | |
3847 | cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len); | |
3848 | } | |
f8a83245 | 3849 | qemu_vfree(bounce.buffer); |
6d16c2f8 | 3850 | bounce.buffer = NULL; |
ba223c29 | 3851 | cpu_notify_map_clients(); |
6d16c2f8 | 3852 | } |
d0ecd2aa | 3853 | |
8df1cd07 | 3854 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
3855 | static inline uint32_t ldl_phys_internal(target_phys_addr_t addr, |
3856 | enum device_endian endian) | |
8df1cd07 FB |
3857 | { |
3858 | int io_index; | |
3859 | uint8_t *ptr; | |
3860 | uint32_t val; | |
3861 | unsigned long pd; | |
f1f6e3b8 | 3862 | PhysPageDesc p; |
8df1cd07 FB |
3863 | |
3864 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 3865 | pd = p.phys_offset; |
3b46e624 | 3866 | |
1d393fa2 | 3867 | if (!is_ram_rom_romd(pd)) { |
8df1cd07 FB |
3868 | /* I/O case */ |
3869 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); | |
f1f6e3b8 | 3870 | addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
acbbec5d | 3871 | val = io_mem_read(io_index, addr, 4); |
1e78bcc1 AG |
3872 | #if defined(TARGET_WORDS_BIGENDIAN) |
3873 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
3874 | val = bswap32(val); | |
3875 | } | |
3876 | #else | |
3877 | if (endian == DEVICE_BIG_ENDIAN) { | |
3878 | val = bswap32(val); | |
3879 | } | |
3880 | #endif | |
8df1cd07 FB |
3881 | } else { |
3882 | /* RAM case */ | |
5579c7f3 | 3883 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
8df1cd07 | 3884 | (addr & ~TARGET_PAGE_MASK); |
1e78bcc1 AG |
3885 | switch (endian) { |
3886 | case DEVICE_LITTLE_ENDIAN: | |
3887 | val = ldl_le_p(ptr); | |
3888 | break; | |
3889 | case DEVICE_BIG_ENDIAN: | |
3890 | val = ldl_be_p(ptr); | |
3891 | break; | |
3892 | default: | |
3893 | val = ldl_p(ptr); | |
3894 | break; | |
3895 | } | |
8df1cd07 FB |
3896 | } |
3897 | return val; | |
3898 | } | |
3899 | ||
1e78bcc1 AG |
3900 | uint32_t ldl_phys(target_phys_addr_t addr) |
3901 | { | |
3902 | return ldl_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3903 | } | |
3904 | ||
3905 | uint32_t ldl_le_phys(target_phys_addr_t addr) | |
3906 | { | |
3907 | return ldl_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3908 | } | |
3909 | ||
3910 | uint32_t ldl_be_phys(target_phys_addr_t addr) | |
3911 | { | |
3912 | return ldl_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3913 | } | |
3914 | ||
84b7b8e7 | 3915 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
3916 | static inline uint64_t ldq_phys_internal(target_phys_addr_t addr, |
3917 | enum device_endian endian) | |
84b7b8e7 FB |
3918 | { |
3919 | int io_index; | |
3920 | uint8_t *ptr; | |
3921 | uint64_t val; | |
3922 | unsigned long pd; | |
f1f6e3b8 | 3923 | PhysPageDesc p; |
84b7b8e7 FB |
3924 | |
3925 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 3926 | pd = p.phys_offset; |
3b46e624 | 3927 | |
1d393fa2 | 3928 | if (!is_ram_rom_romd(pd)) { |
84b7b8e7 FB |
3929 | /* I/O case */ |
3930 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); | |
f1f6e3b8 | 3931 | addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
1e78bcc1 AG |
3932 | |
3933 | /* XXX This is broken when device endian != cpu endian. | |
3934 | Fix and add "endian" variable check */ | |
84b7b8e7 | 3935 | #ifdef TARGET_WORDS_BIGENDIAN |
acbbec5d AK |
3936 | val = io_mem_read(io_index, addr, 4) << 32; |
3937 | val |= io_mem_read(io_index, addr + 4, 4); | |
84b7b8e7 | 3938 | #else |
acbbec5d AK |
3939 | val = io_mem_read(io_index, addr, 4); |
3940 | val |= io_mem_read(io_index, addr + 4, 4) << 32; | |
84b7b8e7 FB |
3941 | #endif |
3942 | } else { | |
3943 | /* RAM case */ | |
5579c7f3 | 3944 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
84b7b8e7 | 3945 | (addr & ~TARGET_PAGE_MASK); |
1e78bcc1 AG |
3946 | switch (endian) { |
3947 | case DEVICE_LITTLE_ENDIAN: | |
3948 | val = ldq_le_p(ptr); | |
3949 | break; | |
3950 | case DEVICE_BIG_ENDIAN: | |
3951 | val = ldq_be_p(ptr); | |
3952 | break; | |
3953 | default: | |
3954 | val = ldq_p(ptr); | |
3955 | break; | |
3956 | } | |
84b7b8e7 FB |
3957 | } |
3958 | return val; | |
3959 | } | |
3960 | ||
1e78bcc1 AG |
3961 | uint64_t ldq_phys(target_phys_addr_t addr) |
3962 | { | |
3963 | return ldq_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3964 | } | |
3965 | ||
3966 | uint64_t ldq_le_phys(target_phys_addr_t addr) | |
3967 | { | |
3968 | return ldq_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3969 | } | |
3970 | ||
3971 | uint64_t ldq_be_phys(target_phys_addr_t addr) | |
3972 | { | |
3973 | return ldq_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3974 | } | |
3975 | ||
aab33094 | 3976 | /* XXX: optimize */ |
c227f099 | 3977 | uint32_t ldub_phys(target_phys_addr_t addr) |
aab33094 FB |
3978 | { |
3979 | uint8_t val; | |
3980 | cpu_physical_memory_read(addr, &val, 1); | |
3981 | return val; | |
3982 | } | |
3983 | ||
733f0b02 | 3984 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
3985 | static inline uint32_t lduw_phys_internal(target_phys_addr_t addr, |
3986 | enum device_endian endian) | |
aab33094 | 3987 | { |
733f0b02 MT |
3988 | int io_index; |
3989 | uint8_t *ptr; | |
3990 | uint64_t val; | |
3991 | unsigned long pd; | |
f1f6e3b8 | 3992 | PhysPageDesc p; |
733f0b02 MT |
3993 | |
3994 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 3995 | pd = p.phys_offset; |
733f0b02 | 3996 | |
1d393fa2 | 3997 | if (!is_ram_rom_romd(pd)) { |
733f0b02 MT |
3998 | /* I/O case */ |
3999 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); | |
f1f6e3b8 | 4000 | addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
acbbec5d | 4001 | val = io_mem_read(io_index, addr, 2); |
1e78bcc1 AG |
4002 | #if defined(TARGET_WORDS_BIGENDIAN) |
4003 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
4004 | val = bswap16(val); | |
4005 | } | |
4006 | #else | |
4007 | if (endian == DEVICE_BIG_ENDIAN) { | |
4008 | val = bswap16(val); | |
4009 | } | |
4010 | #endif | |
733f0b02 MT |
4011 | } else { |
4012 | /* RAM case */ | |
4013 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + | |
4014 | (addr & ~TARGET_PAGE_MASK); | |
1e78bcc1 AG |
4015 | switch (endian) { |
4016 | case DEVICE_LITTLE_ENDIAN: | |
4017 | val = lduw_le_p(ptr); | |
4018 | break; | |
4019 | case DEVICE_BIG_ENDIAN: | |
4020 | val = lduw_be_p(ptr); | |
4021 | break; | |
4022 | default: | |
4023 | val = lduw_p(ptr); | |
4024 | break; | |
4025 | } | |
733f0b02 MT |
4026 | } |
4027 | return val; | |
aab33094 FB |
4028 | } |
4029 | ||
1e78bcc1 AG |
4030 | uint32_t lduw_phys(target_phys_addr_t addr) |
4031 | { | |
4032 | return lduw_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
4033 | } | |
4034 | ||
4035 | uint32_t lduw_le_phys(target_phys_addr_t addr) | |
4036 | { | |
4037 | return lduw_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
4038 | } | |
4039 | ||
4040 | uint32_t lduw_be_phys(target_phys_addr_t addr) | |
4041 | { | |
4042 | return lduw_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
4043 | } | |
4044 | ||
8df1cd07 FB |
4045 | /* warning: addr must be aligned. The ram page is not masked as dirty |
4046 | and the code inside is not invalidated. It is useful if the dirty | |
4047 | bits are used to track modified PTEs */ | |
c227f099 | 4048 | void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val) |
8df1cd07 FB |
4049 | { |
4050 | int io_index; | |
4051 | uint8_t *ptr; | |
4052 | unsigned long pd; | |
f1f6e3b8 | 4053 | PhysPageDesc p; |
8df1cd07 FB |
4054 | |
4055 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 4056 | pd = p.phys_offset; |
3b46e624 | 4057 | |
0e0df1e2 | 4058 | if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { |
8df1cd07 | 4059 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
f1f6e3b8 | 4060 | addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
acbbec5d | 4061 | io_mem_write(io_index, addr, val, 4); |
8df1cd07 | 4062 | } else { |
74576198 | 4063 | unsigned long addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
5579c7f3 | 4064 | ptr = qemu_get_ram_ptr(addr1); |
8df1cd07 | 4065 | stl_p(ptr, val); |
74576198 AL |
4066 | |
4067 | if (unlikely(in_migration)) { | |
4068 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
4069 | /* invalidate code */ | |
4070 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
4071 | /* set dirty bit */ | |
f7c11b53 YT |
4072 | cpu_physical_memory_set_dirty_flags( |
4073 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
74576198 AL |
4074 | } |
4075 | } | |
8df1cd07 FB |
4076 | } |
4077 | } | |
4078 | ||
c227f099 | 4079 | void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val) |
bc98a7ef JM |
4080 | { |
4081 | int io_index; | |
4082 | uint8_t *ptr; | |
4083 | unsigned long pd; | |
f1f6e3b8 | 4084 | PhysPageDesc p; |
bc98a7ef JM |
4085 | |
4086 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 4087 | pd = p.phys_offset; |
3b46e624 | 4088 | |
0e0df1e2 | 4089 | if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { |
bc98a7ef | 4090 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
f1f6e3b8 | 4091 | addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
bc98a7ef | 4092 | #ifdef TARGET_WORDS_BIGENDIAN |
acbbec5d AK |
4093 | io_mem_write(io_index, addr, val >> 32, 4); |
4094 | io_mem_write(io_index, addr + 4, (uint32_t)val, 4); | |
bc98a7ef | 4095 | #else |
acbbec5d AK |
4096 | io_mem_write(io_index, addr, (uint32_t)val, 4); |
4097 | io_mem_write(io_index, addr + 4, val >> 32, 4); | |
bc98a7ef JM |
4098 | #endif |
4099 | } else { | |
5579c7f3 | 4100 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
bc98a7ef JM |
4101 | (addr & ~TARGET_PAGE_MASK); |
4102 | stq_p(ptr, val); | |
4103 | } | |
4104 | } | |
4105 | ||
8df1cd07 | 4106 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
4107 | static inline void stl_phys_internal(target_phys_addr_t addr, uint32_t val, |
4108 | enum device_endian endian) | |
8df1cd07 FB |
4109 | { |
4110 | int io_index; | |
4111 | uint8_t *ptr; | |
4112 | unsigned long pd; | |
f1f6e3b8 | 4113 | PhysPageDesc p; |
8df1cd07 FB |
4114 | |
4115 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 4116 | pd = p.phys_offset; |
3b46e624 | 4117 | |
0e0df1e2 | 4118 | if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { |
8df1cd07 | 4119 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
f1f6e3b8 | 4120 | addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
1e78bcc1 AG |
4121 | #if defined(TARGET_WORDS_BIGENDIAN) |
4122 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
4123 | val = bswap32(val); | |
4124 | } | |
4125 | #else | |
4126 | if (endian == DEVICE_BIG_ENDIAN) { | |
4127 | val = bswap32(val); | |
4128 | } | |
4129 | #endif | |
acbbec5d | 4130 | io_mem_write(io_index, addr, val, 4); |
8df1cd07 FB |
4131 | } else { |
4132 | unsigned long addr1; | |
4133 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); | |
4134 | /* RAM case */ | |
5579c7f3 | 4135 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
4136 | switch (endian) { |
4137 | case DEVICE_LITTLE_ENDIAN: | |
4138 | stl_le_p(ptr, val); | |
4139 | break; | |
4140 | case DEVICE_BIG_ENDIAN: | |
4141 | stl_be_p(ptr, val); | |
4142 | break; | |
4143 | default: | |
4144 | stl_p(ptr, val); | |
4145 | break; | |
4146 | } | |
3a7d929e FB |
4147 | if (!cpu_physical_memory_is_dirty(addr1)) { |
4148 | /* invalidate code */ | |
4149 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
4150 | /* set dirty bit */ | |
f7c11b53 YT |
4151 | cpu_physical_memory_set_dirty_flags(addr1, |
4152 | (0xff & ~CODE_DIRTY_FLAG)); | |
3a7d929e | 4153 | } |
8df1cd07 FB |
4154 | } |
4155 | } | |
4156 | ||
1e78bcc1 AG |
4157 | void stl_phys(target_phys_addr_t addr, uint32_t val) |
4158 | { | |
4159 | stl_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
4160 | } | |
4161 | ||
4162 | void stl_le_phys(target_phys_addr_t addr, uint32_t val) | |
4163 | { | |
4164 | stl_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
4165 | } | |
4166 | ||
4167 | void stl_be_phys(target_phys_addr_t addr, uint32_t val) | |
4168 | { | |
4169 | stl_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
4170 | } | |
4171 | ||
aab33094 | 4172 | /* XXX: optimize */ |
c227f099 | 4173 | void stb_phys(target_phys_addr_t addr, uint32_t val) |
aab33094 FB |
4174 | { |
4175 | uint8_t v = val; | |
4176 | cpu_physical_memory_write(addr, &v, 1); | |
4177 | } | |
4178 | ||
733f0b02 | 4179 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
4180 | static inline void stw_phys_internal(target_phys_addr_t addr, uint32_t val, |
4181 | enum device_endian endian) | |
aab33094 | 4182 | { |
733f0b02 MT |
4183 | int io_index; |
4184 | uint8_t *ptr; | |
4185 | unsigned long pd; | |
f1f6e3b8 | 4186 | PhysPageDesc p; |
733f0b02 MT |
4187 | |
4188 | p = phys_page_find(addr >> TARGET_PAGE_BITS); | |
f1f6e3b8 | 4189 | pd = p.phys_offset; |
733f0b02 | 4190 | |
0e0df1e2 | 4191 | if ((pd & ~TARGET_PAGE_MASK) != io_mem_ram.ram_addr) { |
733f0b02 | 4192 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
f1f6e3b8 | 4193 | addr = (addr & ~TARGET_PAGE_MASK) + p.region_offset; |
1e78bcc1 AG |
4194 | #if defined(TARGET_WORDS_BIGENDIAN) |
4195 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
4196 | val = bswap16(val); | |
4197 | } | |
4198 | #else | |
4199 | if (endian == DEVICE_BIG_ENDIAN) { | |
4200 | val = bswap16(val); | |
4201 | } | |
4202 | #endif | |
acbbec5d | 4203 | io_mem_write(io_index, addr, val, 2); |
733f0b02 MT |
4204 | } else { |
4205 | unsigned long addr1; | |
4206 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); | |
4207 | /* RAM case */ | |
4208 | ptr = qemu_get_ram_ptr(addr1); | |
1e78bcc1 AG |
4209 | switch (endian) { |
4210 | case DEVICE_LITTLE_ENDIAN: | |
4211 | stw_le_p(ptr, val); | |
4212 | break; | |
4213 | case DEVICE_BIG_ENDIAN: | |
4214 | stw_be_p(ptr, val); | |
4215 | break; | |
4216 | default: | |
4217 | stw_p(ptr, val); | |
4218 | break; | |
4219 | } | |
733f0b02 MT |
4220 | if (!cpu_physical_memory_is_dirty(addr1)) { |
4221 | /* invalidate code */ | |
4222 | tb_invalidate_phys_page_range(addr1, addr1 + 2, 0); | |
4223 | /* set dirty bit */ | |
4224 | cpu_physical_memory_set_dirty_flags(addr1, | |
4225 | (0xff & ~CODE_DIRTY_FLAG)); | |
4226 | } | |
4227 | } | |
aab33094 FB |
4228 | } |
4229 | ||
1e78bcc1 AG |
4230 | void stw_phys(target_phys_addr_t addr, uint32_t val) |
4231 | { | |
4232 | stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
4233 | } | |
4234 | ||
4235 | void stw_le_phys(target_phys_addr_t addr, uint32_t val) | |
4236 | { | |
4237 | stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
4238 | } | |
4239 | ||
4240 | void stw_be_phys(target_phys_addr_t addr, uint32_t val) | |
4241 | { | |
4242 | stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
4243 | } | |
4244 | ||
aab33094 | 4245 | /* XXX: optimize */ |
c227f099 | 4246 | void stq_phys(target_phys_addr_t addr, uint64_t val) |
aab33094 FB |
4247 | { |
4248 | val = tswap64(val); | |
71d2b725 | 4249 | cpu_physical_memory_write(addr, &val, 8); |
aab33094 FB |
4250 | } |
4251 | ||
1e78bcc1 AG |
4252 | void stq_le_phys(target_phys_addr_t addr, uint64_t val) |
4253 | { | |
4254 | val = cpu_to_le64(val); | |
4255 | cpu_physical_memory_write(addr, &val, 8); | |
4256 | } | |
4257 | ||
4258 | void stq_be_phys(target_phys_addr_t addr, uint64_t val) | |
4259 | { | |
4260 | val = cpu_to_be64(val); | |
4261 | cpu_physical_memory_write(addr, &val, 8); | |
4262 | } | |
4263 | ||
5e2972fd | 4264 | /* virtual memory access for debug (includes writing to ROM) */ |
5fafdf24 | 4265 | int cpu_memory_rw_debug(CPUState *env, target_ulong addr, |
b448f2f3 | 4266 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
4267 | { |
4268 | int l; | |
c227f099 | 4269 | target_phys_addr_t phys_addr; |
9b3c35e0 | 4270 | target_ulong page; |
13eb76e0 FB |
4271 | |
4272 | while (len > 0) { | |
4273 | page = addr & TARGET_PAGE_MASK; | |
4274 | phys_addr = cpu_get_phys_page_debug(env, page); | |
4275 | /* if no physical page mapped, return an error */ | |
4276 | if (phys_addr == -1) | |
4277 | return -1; | |
4278 | l = (page + TARGET_PAGE_SIZE) - addr; | |
4279 | if (l > len) | |
4280 | l = len; | |
5e2972fd | 4281 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
5e2972fd AL |
4282 | if (is_write) |
4283 | cpu_physical_memory_write_rom(phys_addr, buf, l); | |
4284 | else | |
5e2972fd | 4285 | cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
13eb76e0 FB |
4286 | len -= l; |
4287 | buf += l; | |
4288 | addr += l; | |
4289 | } | |
4290 | return 0; | |
4291 | } | |
a68fe89c | 4292 | #endif |
13eb76e0 | 4293 | |
2e70f6ef PB |
4294 | /* in deterministic execution mode, instructions doing device I/Os |
4295 | must be at the end of the TB */ | |
4296 | void cpu_io_recompile(CPUState *env, void *retaddr) | |
4297 | { | |
4298 | TranslationBlock *tb; | |
4299 | uint32_t n, cflags; | |
4300 | target_ulong pc, cs_base; | |
4301 | uint64_t flags; | |
4302 | ||
4303 | tb = tb_find_pc((unsigned long)retaddr); | |
4304 | if (!tb) { | |
4305 | cpu_abort(env, "cpu_io_recompile: could not find TB for pc=%p", | |
4306 | retaddr); | |
4307 | } | |
4308 | n = env->icount_decr.u16.low + tb->icount; | |
618ba8e6 | 4309 | cpu_restore_state(tb, env, (unsigned long)retaddr); |
2e70f6ef | 4310 | /* Calculate how many instructions had been executed before the fault |
bf20dc07 | 4311 | occurred. */ |
2e70f6ef PB |
4312 | n = n - env->icount_decr.u16.low; |
4313 | /* Generate a new TB ending on the I/O insn. */ | |
4314 | n++; | |
4315 | /* On MIPS and SH, delay slot instructions can only be restarted if | |
4316 | they were already the first instruction in the TB. If this is not | |
bf20dc07 | 4317 | the first instruction in a TB then re-execute the preceding |
2e70f6ef PB |
4318 | branch. */ |
4319 | #if defined(TARGET_MIPS) | |
4320 | if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) { | |
4321 | env->active_tc.PC -= 4; | |
4322 | env->icount_decr.u16.low++; | |
4323 | env->hflags &= ~MIPS_HFLAG_BMASK; | |
4324 | } | |
4325 | #elif defined(TARGET_SH4) | |
4326 | if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0 | |
4327 | && n > 1) { | |
4328 | env->pc -= 2; | |
4329 | env->icount_decr.u16.low++; | |
4330 | env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL); | |
4331 | } | |
4332 | #endif | |
4333 | /* This should never happen. */ | |
4334 | if (n > CF_COUNT_MASK) | |
4335 | cpu_abort(env, "TB too big during recompile"); | |
4336 | ||
4337 | cflags = n | CF_LAST_IO; | |
4338 | pc = tb->pc; | |
4339 | cs_base = tb->cs_base; | |
4340 | flags = tb->flags; | |
4341 | tb_phys_invalidate(tb, -1); | |
4342 | /* FIXME: In theory this could raise an exception. In practice | |
4343 | we have already translated the block once so it's probably ok. */ | |
4344 | tb_gen_code(env, pc, cs_base, flags, cflags); | |
bf20dc07 | 4345 | /* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not |
2e70f6ef PB |
4346 | the first in the TB) then we end up generating a whole new TB and |
4347 | repeating the fault, which is horribly inefficient. | |
4348 | Better would be to execute just this insn uncached, or generate a | |
4349 | second new TB. */ | |
4350 | cpu_resume_from_signal(env, NULL); | |
4351 | } | |
4352 | ||
b3755a91 PB |
4353 | #if !defined(CONFIG_USER_ONLY) |
4354 | ||
055403b2 | 4355 | void dump_exec_info(FILE *f, fprintf_function cpu_fprintf) |
e3db7226 FB |
4356 | { |
4357 | int i, target_code_size, max_target_code_size; | |
4358 | int direct_jmp_count, direct_jmp2_count, cross_page; | |
4359 | TranslationBlock *tb; | |
3b46e624 | 4360 | |
e3db7226 FB |
4361 | target_code_size = 0; |
4362 | max_target_code_size = 0; | |
4363 | cross_page = 0; | |
4364 | direct_jmp_count = 0; | |
4365 | direct_jmp2_count = 0; | |
4366 | for(i = 0; i < nb_tbs; i++) { | |
4367 | tb = &tbs[i]; | |
4368 | target_code_size += tb->size; | |
4369 | if (tb->size > max_target_code_size) | |
4370 | max_target_code_size = tb->size; | |
4371 | if (tb->page_addr[1] != -1) | |
4372 | cross_page++; | |
4373 | if (tb->tb_next_offset[0] != 0xffff) { | |
4374 | direct_jmp_count++; | |
4375 | if (tb->tb_next_offset[1] != 0xffff) { | |
4376 | direct_jmp2_count++; | |
4377 | } | |
4378 | } | |
4379 | } | |
4380 | /* XXX: avoid using doubles ? */ | |
57fec1fe | 4381 | cpu_fprintf(f, "Translation buffer state:\n"); |
055403b2 | 4382 | cpu_fprintf(f, "gen code size %td/%ld\n", |
26a5f13b FB |
4383 | code_gen_ptr - code_gen_buffer, code_gen_buffer_max_size); |
4384 | cpu_fprintf(f, "TB count %d/%d\n", | |
4385 | nb_tbs, code_gen_max_blocks); | |
5fafdf24 | 4386 | cpu_fprintf(f, "TB avg target size %d max=%d bytes\n", |
e3db7226 FB |
4387 | nb_tbs ? target_code_size / nb_tbs : 0, |
4388 | max_target_code_size); | |
055403b2 | 4389 | cpu_fprintf(f, "TB avg host size %td bytes (expansion ratio: %0.1f)\n", |
e3db7226 FB |
4390 | nb_tbs ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0, |
4391 | target_code_size ? (double) (code_gen_ptr - code_gen_buffer) / target_code_size : 0); | |
5fafdf24 TS |
4392 | cpu_fprintf(f, "cross page TB count %d (%d%%)\n", |
4393 | cross_page, | |
e3db7226 FB |
4394 | nb_tbs ? (cross_page * 100) / nb_tbs : 0); |
4395 | cpu_fprintf(f, "direct jump count %d (%d%%) (2 jumps=%d %d%%)\n", | |
5fafdf24 | 4396 | direct_jmp_count, |
e3db7226 FB |
4397 | nb_tbs ? (direct_jmp_count * 100) / nb_tbs : 0, |
4398 | direct_jmp2_count, | |
4399 | nb_tbs ? (direct_jmp2_count * 100) / nb_tbs : 0); | |
57fec1fe | 4400 | cpu_fprintf(f, "\nStatistics:\n"); |
e3db7226 FB |
4401 | cpu_fprintf(f, "TB flush count %d\n", tb_flush_count); |
4402 | cpu_fprintf(f, "TB invalidate count %d\n", tb_phys_invalidate_count); | |
4403 | cpu_fprintf(f, "TLB flush count %d\n", tlb_flush_count); | |
b67d9a52 | 4404 | tcg_dump_info(f, cpu_fprintf); |
e3db7226 FB |
4405 | } |
4406 | ||
d39e8222 AK |
4407 | /* NOTE: this function can trigger an exception */ |
4408 | /* NOTE2: the returned address is not exactly the physical address: it | |
4409 | is the offset relative to phys_ram_base */ | |
4410 | tb_page_addr_t get_page_addr_code(CPUState *env1, target_ulong addr) | |
4411 | { | |
4412 | int mmu_idx, page_index, pd; | |
4413 | void *p; | |
4414 | ||
4415 | page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); | |
4416 | mmu_idx = cpu_mmu_index(env1); | |
4417 | if (unlikely(env1->tlb_table[mmu_idx][page_index].addr_code != | |
4418 | (addr & TARGET_PAGE_MASK))) { | |
4419 | ldub_code(addr); | |
4420 | } | |
4421 | pd = env1->tlb_table[mmu_idx][page_index].addr_code & ~TARGET_PAGE_MASK; | |
0e0df1e2 AK |
4422 | if (pd != io_mem_ram.ram_addr && pd != io_mem_rom.ram_addr |
4423 | && !(pd & IO_MEM_ROMD)) { | |
d39e8222 AK |
4424 | #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SPARC) |
4425 | cpu_unassigned_access(env1, addr, 0, 1, 0, 4); | |
4426 | #else | |
4427 | cpu_abort(env1, "Trying to execute code outside RAM or ROM at 0x" TARGET_FMT_lx "\n", addr); | |
4428 | #endif | |
4429 | } | |
4430 | p = (void *)((uintptr_t)addr + env1->tlb_table[mmu_idx][page_index].addend); | |
4431 | return qemu_ram_addr_from_host_nofail(p); | |
4432 | } | |
4433 | ||
61382a50 | 4434 | #define MMUSUFFIX _cmmu |
3917149d | 4435 | #undef GETPC |
61382a50 FB |
4436 | #define GETPC() NULL |
4437 | #define env cpu_single_env | |
b769d8fe | 4438 | #define SOFTMMU_CODE_ACCESS |
61382a50 FB |
4439 | |
4440 | #define SHIFT 0 | |
4441 | #include "softmmu_template.h" | |
4442 | ||
4443 | #define SHIFT 1 | |
4444 | #include "softmmu_template.h" | |
4445 | ||
4446 | #define SHIFT 2 | |
4447 | #include "softmmu_template.h" | |
4448 | ||
4449 | #define SHIFT 3 | |
4450 | #include "softmmu_template.h" | |
4451 | ||
4452 | #undef env | |
4453 | ||
4454 | #endif |