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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 | |
0cac1b66 BS |
60 | #include "cputlb.h" |
61 | ||
67d95c15 AK |
62 | #define WANT_EXEC_OBSOLETE |
63 | #include "exec-obsolete.h" | |
64 | ||
fd6ce8f6 | 65 | //#define DEBUG_TB_INVALIDATE |
66e85a21 | 66 | //#define DEBUG_FLUSH |
67d3b957 | 67 | //#define DEBUG_UNASSIGNED |
fd6ce8f6 FB |
68 | |
69 | /* make various TB consistency checks */ | |
5fafdf24 | 70 | //#define DEBUG_TB_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))) | |
6840981d | 96 | #elif defined(_WIN32) && !defined(_WIN64) |
f8e2af11 SW |
97 | #define code_gen_section \ |
98 | __attribute__((aligned (16))) | |
d03d860b BS |
99 | #else |
100 | #define code_gen_section \ | |
101 | __attribute__((aligned (32))) | |
102 | #endif | |
103 | ||
104 | uint8_t code_gen_prologue[1024] code_gen_section; | |
bdaf78e0 BS |
105 | static uint8_t *code_gen_buffer; |
106 | static unsigned long code_gen_buffer_size; | |
26a5f13b | 107 | /* threshold to flush the translated code buffer */ |
bdaf78e0 | 108 | static unsigned long code_gen_buffer_max_size; |
24ab68ac | 109 | static uint8_t *code_gen_ptr; |
fd6ce8f6 | 110 | |
e2eef170 | 111 | #if !defined(CONFIG_USER_ONLY) |
9fa3e853 | 112 | int phys_ram_fd; |
74576198 | 113 | static int in_migration; |
94a6b54f | 114 | |
85d59fef | 115 | RAMList ram_list = { .blocks = QLIST_HEAD_INITIALIZER(ram_list.blocks) }; |
62152b8a AK |
116 | |
117 | static MemoryRegion *system_memory; | |
309cb471 | 118 | static MemoryRegion *system_io; |
62152b8a | 119 | |
0e0df1e2 | 120 | MemoryRegion io_mem_ram, io_mem_rom, io_mem_unassigned, io_mem_notdirty; |
de712f94 | 121 | static MemoryRegion io_mem_subpage_ram; |
0e0df1e2 | 122 | |
e2eef170 | 123 | #endif |
9fa3e853 | 124 | |
9349b4f9 | 125 | CPUArchState *first_cpu; |
6a00d601 FB |
126 | /* current CPU in the current thread. It is only valid inside |
127 | cpu_exec() */ | |
9349b4f9 | 128 | DEFINE_TLS(CPUArchState *,cpu_single_env); |
2e70f6ef | 129 | /* 0 = Do not count executed instructions. |
bf20dc07 | 130 | 1 = Precise instruction counting. |
2e70f6ef PB |
131 | 2 = Adaptive rate instruction counting. */ |
132 | int use_icount = 0; | |
6a00d601 | 133 | |
54936004 | 134 | typedef struct PageDesc { |
92e873b9 | 135 | /* list of TBs intersecting this ram page */ |
fd6ce8f6 | 136 | TranslationBlock *first_tb; |
9fa3e853 FB |
137 | /* in order to optimize self modifying code, we count the number |
138 | of lookups we do to a given page to use a bitmap */ | |
139 | unsigned int code_write_count; | |
140 | uint8_t *code_bitmap; | |
141 | #if defined(CONFIG_USER_ONLY) | |
142 | unsigned long flags; | |
143 | #endif | |
54936004 FB |
144 | } PageDesc; |
145 | ||
41c1b1c9 | 146 | /* In system mode we want L1_MAP to be based on ram offsets, |
5cd2c5b6 RH |
147 | while in user mode we want it to be based on virtual addresses. */ |
148 | #if !defined(CONFIG_USER_ONLY) | |
41c1b1c9 PB |
149 | #if HOST_LONG_BITS < TARGET_PHYS_ADDR_SPACE_BITS |
150 | # define L1_MAP_ADDR_SPACE_BITS HOST_LONG_BITS | |
151 | #else | |
5cd2c5b6 | 152 | # define L1_MAP_ADDR_SPACE_BITS TARGET_PHYS_ADDR_SPACE_BITS |
41c1b1c9 | 153 | #endif |
bedb69ea | 154 | #else |
5cd2c5b6 | 155 | # define L1_MAP_ADDR_SPACE_BITS TARGET_VIRT_ADDR_SPACE_BITS |
bedb69ea | 156 | #endif |
54936004 | 157 | |
5cd2c5b6 RH |
158 | /* Size of the L2 (and L3, etc) page tables. */ |
159 | #define L2_BITS 10 | |
54936004 FB |
160 | #define L2_SIZE (1 << L2_BITS) |
161 | ||
3eef53df AK |
162 | #define P_L2_LEVELS \ |
163 | (((TARGET_PHYS_ADDR_SPACE_BITS - TARGET_PAGE_BITS - 1) / L2_BITS) + 1) | |
164 | ||
5cd2c5b6 | 165 | /* The bits remaining after N lower levels of page tables. */ |
5cd2c5b6 RH |
166 | #define V_L1_BITS_REM \ |
167 | ((L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % L2_BITS) | |
168 | ||
5cd2c5b6 RH |
169 | #if V_L1_BITS_REM < 4 |
170 | #define V_L1_BITS (V_L1_BITS_REM + L2_BITS) | |
171 | #else | |
172 | #define V_L1_BITS V_L1_BITS_REM | |
173 | #endif | |
174 | ||
5cd2c5b6 RH |
175 | #define V_L1_SIZE ((target_ulong)1 << V_L1_BITS) |
176 | ||
5cd2c5b6 RH |
177 | #define V_L1_SHIFT (L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS - V_L1_BITS) |
178 | ||
c6d50674 SW |
179 | uintptr_t qemu_real_host_page_size; |
180 | uintptr_t qemu_host_page_size; | |
181 | uintptr_t qemu_host_page_mask; | |
54936004 | 182 | |
5cd2c5b6 RH |
183 | /* This is a multi-level map on the virtual address space. |
184 | The bottom level has pointers to PageDesc. */ | |
185 | static void *l1_map[V_L1_SIZE]; | |
54936004 | 186 | |
e2eef170 | 187 | #if !defined(CONFIG_USER_ONLY) |
4346ae3e AK |
188 | typedef struct PhysPageEntry PhysPageEntry; |
189 | ||
5312bd8b AK |
190 | static MemoryRegionSection *phys_sections; |
191 | static unsigned phys_sections_nb, phys_sections_nb_alloc; | |
192 | static uint16_t phys_section_unassigned; | |
aa102231 AK |
193 | static uint16_t phys_section_notdirty; |
194 | static uint16_t phys_section_rom; | |
195 | static uint16_t phys_section_watch; | |
5312bd8b | 196 | |
4346ae3e | 197 | struct PhysPageEntry { |
07f07b31 AK |
198 | uint16_t is_leaf : 1; |
199 | /* index into phys_sections (is_leaf) or phys_map_nodes (!is_leaf) */ | |
200 | uint16_t ptr : 15; | |
4346ae3e AK |
201 | }; |
202 | ||
d6f2ea22 AK |
203 | /* Simple allocator for PhysPageEntry nodes */ |
204 | static PhysPageEntry (*phys_map_nodes)[L2_SIZE]; | |
205 | static unsigned phys_map_nodes_nb, phys_map_nodes_nb_alloc; | |
206 | ||
07f07b31 | 207 | #define PHYS_MAP_NODE_NIL (((uint16_t)~0) >> 1) |
d6f2ea22 | 208 | |
5cd2c5b6 | 209 | /* This is a multi-level map on the physical address space. |
06ef3525 | 210 | The bottom level has pointers to MemoryRegionSections. */ |
07f07b31 | 211 | static PhysPageEntry phys_map = { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 }; |
6d9a1304 | 212 | |
e2eef170 | 213 | static void io_mem_init(void); |
62152b8a | 214 | static void memory_map_init(void); |
e2eef170 | 215 | |
1ec9b909 | 216 | static MemoryRegion io_mem_watch; |
6658ffb8 | 217 | #endif |
33417e70 | 218 | |
34865134 | 219 | /* log support */ |
1e8b27ca JR |
220 | #ifdef WIN32 |
221 | static const char *logfilename = "qemu.log"; | |
222 | #else | |
d9b630fd | 223 | static const char *logfilename = "/tmp/qemu.log"; |
1e8b27ca | 224 | #endif |
34865134 FB |
225 | FILE *logfile; |
226 | int loglevel; | |
e735b91c | 227 | static int log_append = 0; |
34865134 | 228 | |
e3db7226 | 229 | /* statistics */ |
e3db7226 FB |
230 | static int tb_flush_count; |
231 | static int tb_phys_invalidate_count; | |
232 | ||
7cb69cae FB |
233 | #ifdef _WIN32 |
234 | static void map_exec(void *addr, long size) | |
235 | { | |
236 | DWORD old_protect; | |
237 | VirtualProtect(addr, size, | |
238 | PAGE_EXECUTE_READWRITE, &old_protect); | |
239 | ||
240 | } | |
241 | #else | |
242 | static void map_exec(void *addr, long size) | |
243 | { | |
4369415f | 244 | unsigned long start, end, page_size; |
7cb69cae | 245 | |
4369415f | 246 | page_size = getpagesize(); |
7cb69cae | 247 | start = (unsigned long)addr; |
4369415f | 248 | start &= ~(page_size - 1); |
7cb69cae FB |
249 | |
250 | end = (unsigned long)addr + size; | |
4369415f FB |
251 | end += page_size - 1; |
252 | end &= ~(page_size - 1); | |
7cb69cae FB |
253 | |
254 | mprotect((void *)start, end - start, | |
255 | PROT_READ | PROT_WRITE | PROT_EXEC); | |
256 | } | |
257 | #endif | |
258 | ||
b346ff46 | 259 | static void page_init(void) |
54936004 | 260 | { |
83fb7adf | 261 | /* NOTE: we can always suppose that qemu_host_page_size >= |
54936004 | 262 | TARGET_PAGE_SIZE */ |
c2b48b69 AL |
263 | #ifdef _WIN32 |
264 | { | |
265 | SYSTEM_INFO system_info; | |
266 | ||
267 | GetSystemInfo(&system_info); | |
268 | qemu_real_host_page_size = system_info.dwPageSize; | |
269 | } | |
270 | #else | |
271 | qemu_real_host_page_size = getpagesize(); | |
272 | #endif | |
83fb7adf FB |
273 | if (qemu_host_page_size == 0) |
274 | qemu_host_page_size = qemu_real_host_page_size; | |
275 | if (qemu_host_page_size < TARGET_PAGE_SIZE) | |
276 | qemu_host_page_size = TARGET_PAGE_SIZE; | |
83fb7adf | 277 | qemu_host_page_mask = ~(qemu_host_page_size - 1); |
50a9569b | 278 | |
2e9a5713 | 279 | #if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY) |
50a9569b | 280 | { |
f01576f1 JL |
281 | #ifdef HAVE_KINFO_GETVMMAP |
282 | struct kinfo_vmentry *freep; | |
283 | int i, cnt; | |
284 | ||
285 | freep = kinfo_getvmmap(getpid(), &cnt); | |
286 | if (freep) { | |
287 | mmap_lock(); | |
288 | for (i = 0; i < cnt; i++) { | |
289 | unsigned long startaddr, endaddr; | |
290 | ||
291 | startaddr = freep[i].kve_start; | |
292 | endaddr = freep[i].kve_end; | |
293 | if (h2g_valid(startaddr)) { | |
294 | startaddr = h2g(startaddr) & TARGET_PAGE_MASK; | |
295 | ||
296 | if (h2g_valid(endaddr)) { | |
297 | endaddr = h2g(endaddr); | |
fd436907 | 298 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); |
f01576f1 JL |
299 | } else { |
300 | #if TARGET_ABI_BITS <= L1_MAP_ADDR_SPACE_BITS | |
301 | endaddr = ~0ul; | |
fd436907 | 302 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); |
f01576f1 JL |
303 | #endif |
304 | } | |
305 | } | |
306 | } | |
307 | free(freep); | |
308 | mmap_unlock(); | |
309 | } | |
310 | #else | |
50a9569b | 311 | FILE *f; |
50a9569b | 312 | |
0776590d | 313 | last_brk = (unsigned long)sbrk(0); |
5cd2c5b6 | 314 | |
fd436907 | 315 | f = fopen("/compat/linux/proc/self/maps", "r"); |
50a9569b | 316 | if (f) { |
5cd2c5b6 RH |
317 | mmap_lock(); |
318 | ||
50a9569b | 319 | do { |
5cd2c5b6 RH |
320 | unsigned long startaddr, endaddr; |
321 | int n; | |
322 | ||
323 | n = fscanf (f, "%lx-%lx %*[^\n]\n", &startaddr, &endaddr); | |
324 | ||
325 | if (n == 2 && h2g_valid(startaddr)) { | |
326 | startaddr = h2g(startaddr) & TARGET_PAGE_MASK; | |
327 | ||
328 | if (h2g_valid(endaddr)) { | |
329 | endaddr = h2g(endaddr); | |
330 | } else { | |
331 | endaddr = ~0ul; | |
332 | } | |
333 | page_set_flags(startaddr, endaddr, PAGE_RESERVED); | |
50a9569b AZ |
334 | } |
335 | } while (!feof(f)); | |
5cd2c5b6 | 336 | |
50a9569b | 337 | fclose(f); |
5cd2c5b6 | 338 | mmap_unlock(); |
50a9569b | 339 | } |
f01576f1 | 340 | #endif |
50a9569b AZ |
341 | } |
342 | #endif | |
54936004 FB |
343 | } |
344 | ||
41c1b1c9 | 345 | static PageDesc *page_find_alloc(tb_page_addr_t index, int alloc) |
54936004 | 346 | { |
41c1b1c9 PB |
347 | PageDesc *pd; |
348 | void **lp; | |
349 | int i; | |
350 | ||
5cd2c5b6 | 351 | #if defined(CONFIG_USER_ONLY) |
7267c094 | 352 | /* We can't use g_malloc because it may recurse into a locked mutex. */ |
5cd2c5b6 RH |
353 | # define ALLOC(P, SIZE) \ |
354 | do { \ | |
355 | P = mmap(NULL, SIZE, PROT_READ | PROT_WRITE, \ | |
356 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \ | |
5cd2c5b6 RH |
357 | } while (0) |
358 | #else | |
359 | # define ALLOC(P, SIZE) \ | |
7267c094 | 360 | do { P = g_malloc0(SIZE); } while (0) |
17e2377a | 361 | #endif |
434929bf | 362 | |
5cd2c5b6 RH |
363 | /* Level 1. Always allocated. */ |
364 | lp = l1_map + ((index >> V_L1_SHIFT) & (V_L1_SIZE - 1)); | |
365 | ||
366 | /* Level 2..N-1. */ | |
367 | for (i = V_L1_SHIFT / L2_BITS - 1; i > 0; i--) { | |
368 | void **p = *lp; | |
369 | ||
370 | if (p == NULL) { | |
371 | if (!alloc) { | |
372 | return NULL; | |
373 | } | |
374 | ALLOC(p, sizeof(void *) * L2_SIZE); | |
375 | *lp = p; | |
17e2377a | 376 | } |
5cd2c5b6 RH |
377 | |
378 | lp = p + ((index >> (i * L2_BITS)) & (L2_SIZE - 1)); | |
379 | } | |
380 | ||
381 | pd = *lp; | |
382 | if (pd == NULL) { | |
383 | if (!alloc) { | |
384 | return NULL; | |
385 | } | |
386 | ALLOC(pd, sizeof(PageDesc) * L2_SIZE); | |
387 | *lp = pd; | |
54936004 | 388 | } |
5cd2c5b6 RH |
389 | |
390 | #undef ALLOC | |
5cd2c5b6 RH |
391 | |
392 | return pd + (index & (L2_SIZE - 1)); | |
54936004 FB |
393 | } |
394 | ||
41c1b1c9 | 395 | static inline PageDesc *page_find(tb_page_addr_t index) |
54936004 | 396 | { |
5cd2c5b6 | 397 | return page_find_alloc(index, 0); |
fd6ce8f6 FB |
398 | } |
399 | ||
6d9a1304 | 400 | #if !defined(CONFIG_USER_ONLY) |
d6f2ea22 | 401 | |
f7bf5461 | 402 | static void phys_map_node_reserve(unsigned nodes) |
d6f2ea22 | 403 | { |
f7bf5461 | 404 | if (phys_map_nodes_nb + nodes > phys_map_nodes_nb_alloc) { |
d6f2ea22 AK |
405 | typedef PhysPageEntry Node[L2_SIZE]; |
406 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc * 2, 16); | |
f7bf5461 AK |
407 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc, |
408 | phys_map_nodes_nb + nodes); | |
d6f2ea22 AK |
409 | phys_map_nodes = g_renew(Node, phys_map_nodes, |
410 | phys_map_nodes_nb_alloc); | |
411 | } | |
f7bf5461 AK |
412 | } |
413 | ||
414 | static uint16_t phys_map_node_alloc(void) | |
415 | { | |
416 | unsigned i; | |
417 | uint16_t ret; | |
418 | ||
419 | ret = phys_map_nodes_nb++; | |
420 | assert(ret != PHYS_MAP_NODE_NIL); | |
421 | assert(ret != phys_map_nodes_nb_alloc); | |
d6f2ea22 | 422 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 423 | phys_map_nodes[ret][i].is_leaf = 0; |
c19e8800 | 424 | phys_map_nodes[ret][i].ptr = PHYS_MAP_NODE_NIL; |
d6f2ea22 | 425 | } |
f7bf5461 | 426 | return ret; |
d6f2ea22 AK |
427 | } |
428 | ||
429 | static void phys_map_nodes_reset(void) | |
430 | { | |
431 | phys_map_nodes_nb = 0; | |
432 | } | |
433 | ||
92e873b9 | 434 | |
2999097b AK |
435 | static void phys_page_set_level(PhysPageEntry *lp, target_phys_addr_t *index, |
436 | target_phys_addr_t *nb, uint16_t leaf, | |
437 | int level) | |
f7bf5461 AK |
438 | { |
439 | PhysPageEntry *p; | |
440 | int i; | |
07f07b31 | 441 | target_phys_addr_t step = (target_phys_addr_t)1 << (level * L2_BITS); |
108c49b8 | 442 | |
07f07b31 | 443 | if (!lp->is_leaf && lp->ptr == PHYS_MAP_NODE_NIL) { |
c19e8800 AK |
444 | lp->ptr = phys_map_node_alloc(); |
445 | p = phys_map_nodes[lp->ptr]; | |
f7bf5461 AK |
446 | if (level == 0) { |
447 | for (i = 0; i < L2_SIZE; i++) { | |
07f07b31 | 448 | p[i].is_leaf = 1; |
c19e8800 | 449 | p[i].ptr = phys_section_unassigned; |
4346ae3e | 450 | } |
67c4d23c | 451 | } |
f7bf5461 | 452 | } else { |
c19e8800 | 453 | p = phys_map_nodes[lp->ptr]; |
92e873b9 | 454 | } |
2999097b | 455 | lp = &p[(*index >> (level * L2_BITS)) & (L2_SIZE - 1)]; |
f7bf5461 | 456 | |
2999097b | 457 | while (*nb && lp < &p[L2_SIZE]) { |
07f07b31 AK |
458 | if ((*index & (step - 1)) == 0 && *nb >= step) { |
459 | lp->is_leaf = true; | |
c19e8800 | 460 | lp->ptr = leaf; |
07f07b31 AK |
461 | *index += step; |
462 | *nb -= step; | |
2999097b AK |
463 | } else { |
464 | phys_page_set_level(lp, index, nb, leaf, level - 1); | |
465 | } | |
466 | ++lp; | |
f7bf5461 AK |
467 | } |
468 | } | |
469 | ||
2999097b AK |
470 | static void phys_page_set(target_phys_addr_t index, target_phys_addr_t nb, |
471 | uint16_t leaf) | |
f7bf5461 | 472 | { |
2999097b | 473 | /* Wildly overreserve - it doesn't matter much. */ |
07f07b31 | 474 | phys_map_node_reserve(3 * P_L2_LEVELS); |
5cd2c5b6 | 475 | |
2999097b | 476 | phys_page_set_level(&phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); |
92e873b9 FB |
477 | } |
478 | ||
0cac1b66 | 479 | MemoryRegionSection *phys_page_find(target_phys_addr_t index) |
92e873b9 | 480 | { |
31ab2b4a AK |
481 | PhysPageEntry lp = phys_map; |
482 | PhysPageEntry *p; | |
483 | int i; | |
31ab2b4a | 484 | uint16_t s_index = phys_section_unassigned; |
f1f6e3b8 | 485 | |
07f07b31 | 486 | for (i = P_L2_LEVELS - 1; i >= 0 && !lp.is_leaf; i--) { |
c19e8800 | 487 | if (lp.ptr == PHYS_MAP_NODE_NIL) { |
31ab2b4a AK |
488 | goto not_found; |
489 | } | |
c19e8800 | 490 | p = phys_map_nodes[lp.ptr]; |
31ab2b4a | 491 | lp = p[(index >> (i * L2_BITS)) & (L2_SIZE - 1)]; |
5312bd8b | 492 | } |
31ab2b4a | 493 | |
c19e8800 | 494 | s_index = lp.ptr; |
31ab2b4a | 495 | not_found: |
f3705d53 AK |
496 | return &phys_sections[s_index]; |
497 | } | |
498 | ||
e5548617 BS |
499 | bool memory_region_is_unassigned(MemoryRegion *mr) |
500 | { | |
501 | return mr != &io_mem_ram && mr != &io_mem_rom | |
502 | && mr != &io_mem_notdirty && !mr->rom_device | |
503 | && mr != &io_mem_watch; | |
504 | } | |
505 | ||
c8a706fe PB |
506 | #define mmap_lock() do { } while(0) |
507 | #define mmap_unlock() do { } while(0) | |
9fa3e853 | 508 | #endif |
fd6ce8f6 | 509 | |
4369415f FB |
510 | #define DEFAULT_CODE_GEN_BUFFER_SIZE (32 * 1024 * 1024) |
511 | ||
512 | #if defined(CONFIG_USER_ONLY) | |
ccbb4d44 | 513 | /* Currently it is not recommended to allocate big chunks of data in |
4369415f FB |
514 | user mode. It will change when a dedicated libc will be used */ |
515 | #define USE_STATIC_CODE_GEN_BUFFER | |
516 | #endif | |
517 | ||
518 | #ifdef USE_STATIC_CODE_GEN_BUFFER | |
ebf50fb3 AJ |
519 | static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE] |
520 | __attribute__((aligned (CODE_GEN_ALIGN))); | |
4369415f FB |
521 | #endif |
522 | ||
8fcd3692 | 523 | static void code_gen_alloc(unsigned long tb_size) |
26a5f13b | 524 | { |
4369415f FB |
525 | #ifdef USE_STATIC_CODE_GEN_BUFFER |
526 | code_gen_buffer = static_code_gen_buffer; | |
527 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; | |
528 | map_exec(code_gen_buffer, code_gen_buffer_size); | |
529 | #else | |
26a5f13b FB |
530 | code_gen_buffer_size = tb_size; |
531 | if (code_gen_buffer_size == 0) { | |
4369415f | 532 | #if defined(CONFIG_USER_ONLY) |
4369415f FB |
533 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; |
534 | #else | |
ccbb4d44 | 535 | /* XXX: needs adjustments */ |
94a6b54f | 536 | code_gen_buffer_size = (unsigned long)(ram_size / 4); |
4369415f | 537 | #endif |
26a5f13b FB |
538 | } |
539 | if (code_gen_buffer_size < MIN_CODE_GEN_BUFFER_SIZE) | |
540 | code_gen_buffer_size = MIN_CODE_GEN_BUFFER_SIZE; | |
541 | /* The code gen buffer location may have constraints depending on | |
542 | the host cpu and OS */ | |
543 | #if defined(__linux__) | |
544 | { | |
545 | int flags; | |
141ac468 BS |
546 | void *start = NULL; |
547 | ||
26a5f13b FB |
548 | flags = MAP_PRIVATE | MAP_ANONYMOUS; |
549 | #if defined(__x86_64__) | |
550 | flags |= MAP_32BIT; | |
551 | /* Cannot map more than that */ | |
552 | if (code_gen_buffer_size > (800 * 1024 * 1024)) | |
553 | code_gen_buffer_size = (800 * 1024 * 1024); | |
141ac468 BS |
554 | #elif defined(__sparc_v9__) |
555 | // Map the buffer below 2G, so we can use direct calls and branches | |
556 | flags |= MAP_FIXED; | |
557 | start = (void *) 0x60000000UL; | |
558 | if (code_gen_buffer_size > (512 * 1024 * 1024)) | |
559 | code_gen_buffer_size = (512 * 1024 * 1024); | |
1cb0661e | 560 | #elif defined(__arm__) |
5c84bd90 | 561 | /* Keep the buffer no bigger than 16MB to branch between blocks */ |
1cb0661e AZ |
562 | if (code_gen_buffer_size > 16 * 1024 * 1024) |
563 | code_gen_buffer_size = 16 * 1024 * 1024; | |
eba0b893 RH |
564 | #elif defined(__s390x__) |
565 | /* Map the buffer so that we can use direct calls and branches. */ | |
566 | /* We have a +- 4GB range on the branches; leave some slop. */ | |
567 | if (code_gen_buffer_size > (3ul * 1024 * 1024 * 1024)) { | |
568 | code_gen_buffer_size = 3ul * 1024 * 1024 * 1024; | |
569 | } | |
570 | start = (void *)0x90000000UL; | |
26a5f13b | 571 | #endif |
141ac468 BS |
572 | code_gen_buffer = mmap(start, code_gen_buffer_size, |
573 | PROT_WRITE | PROT_READ | PROT_EXEC, | |
26a5f13b FB |
574 | flags, -1, 0); |
575 | if (code_gen_buffer == MAP_FAILED) { | |
576 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); | |
577 | exit(1); | |
578 | } | |
579 | } | |
cbb608a5 | 580 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \ |
9f4b09a4 TN |
581 | || defined(__DragonFly__) || defined(__OpenBSD__) \ |
582 | || defined(__NetBSD__) | |
06e67a82 AL |
583 | { |
584 | int flags; | |
585 | void *addr = NULL; | |
586 | flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
587 | #if defined(__x86_64__) | |
588 | /* FreeBSD doesn't have MAP_32BIT, use MAP_FIXED and assume | |
589 | * 0x40000000 is free */ | |
590 | flags |= MAP_FIXED; | |
591 | addr = (void *)0x40000000; | |
592 | /* Cannot map more than that */ | |
593 | if (code_gen_buffer_size > (800 * 1024 * 1024)) | |
594 | code_gen_buffer_size = (800 * 1024 * 1024); | |
4cd31ad2 BS |
595 | #elif defined(__sparc_v9__) |
596 | // Map the buffer below 2G, so we can use direct calls and branches | |
597 | flags |= MAP_FIXED; | |
598 | addr = (void *) 0x60000000UL; | |
599 | if (code_gen_buffer_size > (512 * 1024 * 1024)) { | |
600 | code_gen_buffer_size = (512 * 1024 * 1024); | |
601 | } | |
06e67a82 AL |
602 | #endif |
603 | code_gen_buffer = mmap(addr, code_gen_buffer_size, | |
604 | PROT_WRITE | PROT_READ | PROT_EXEC, | |
605 | flags, -1, 0); | |
606 | if (code_gen_buffer == MAP_FAILED) { | |
607 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); | |
608 | exit(1); | |
609 | } | |
610 | } | |
26a5f13b | 611 | #else |
7267c094 | 612 | code_gen_buffer = g_malloc(code_gen_buffer_size); |
26a5f13b FB |
613 | map_exec(code_gen_buffer, code_gen_buffer_size); |
614 | #endif | |
4369415f | 615 | #endif /* !USE_STATIC_CODE_GEN_BUFFER */ |
26a5f13b | 616 | map_exec(code_gen_prologue, sizeof(code_gen_prologue)); |
a884da8a PM |
617 | code_gen_buffer_max_size = code_gen_buffer_size - |
618 | (TCG_MAX_OP_SIZE * OPC_BUF_SIZE); | |
26a5f13b | 619 | code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE; |
7267c094 | 620 | tbs = g_malloc(code_gen_max_blocks * sizeof(TranslationBlock)); |
26a5f13b FB |
621 | } |
622 | ||
623 | /* Must be called before using the QEMU cpus. 'tb_size' is the size | |
624 | (in bytes) allocated to the translation buffer. Zero means default | |
625 | size. */ | |
d5ab9713 | 626 | void tcg_exec_init(unsigned long tb_size) |
26a5f13b | 627 | { |
26a5f13b FB |
628 | cpu_gen_init(); |
629 | code_gen_alloc(tb_size); | |
630 | code_gen_ptr = code_gen_buffer; | |
813da627 | 631 | tcg_register_jit(code_gen_buffer, code_gen_buffer_size); |
4369415f | 632 | page_init(); |
9002ec79 RH |
633 | #if !defined(CONFIG_USER_ONLY) || !defined(CONFIG_USE_GUEST_BASE) |
634 | /* There's no guest base to take into account, so go ahead and | |
635 | initialize the prologue now. */ | |
636 | tcg_prologue_init(&tcg_ctx); | |
637 | #endif | |
26a5f13b FB |
638 | } |
639 | ||
d5ab9713 JK |
640 | bool tcg_enabled(void) |
641 | { | |
642 | return code_gen_buffer != NULL; | |
643 | } | |
644 | ||
645 | void cpu_exec_init_all(void) | |
646 | { | |
647 | #if !defined(CONFIG_USER_ONLY) | |
648 | memory_map_init(); | |
649 | io_mem_init(); | |
650 | #endif | |
651 | } | |
652 | ||
9656f324 PB |
653 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
654 | ||
e59fb374 | 655 | static int cpu_common_post_load(void *opaque, int version_id) |
e7f4eff7 | 656 | { |
9349b4f9 | 657 | CPUArchState *env = opaque; |
9656f324 | 658 | |
3098dba0 AJ |
659 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
660 | version_id is increased. */ | |
661 | env->interrupt_request &= ~0x01; | |
9656f324 PB |
662 | tlb_flush(env, 1); |
663 | ||
664 | return 0; | |
665 | } | |
e7f4eff7 JQ |
666 | |
667 | static const VMStateDescription vmstate_cpu_common = { | |
668 | .name = "cpu_common", | |
669 | .version_id = 1, | |
670 | .minimum_version_id = 1, | |
671 | .minimum_version_id_old = 1, | |
e7f4eff7 JQ |
672 | .post_load = cpu_common_post_load, |
673 | .fields = (VMStateField []) { | |
9349b4f9 AF |
674 | VMSTATE_UINT32(halted, CPUArchState), |
675 | VMSTATE_UINT32(interrupt_request, CPUArchState), | |
e7f4eff7 JQ |
676 | VMSTATE_END_OF_LIST() |
677 | } | |
678 | }; | |
9656f324 PB |
679 | #endif |
680 | ||
9349b4f9 | 681 | CPUArchState *qemu_get_cpu(int cpu) |
950f1472 | 682 | { |
9349b4f9 | 683 | CPUArchState *env = first_cpu; |
950f1472 GC |
684 | |
685 | while (env) { | |
686 | if (env->cpu_index == cpu) | |
687 | break; | |
688 | env = env->next_cpu; | |
689 | } | |
690 | ||
691 | return env; | |
692 | } | |
693 | ||
9349b4f9 | 694 | void cpu_exec_init(CPUArchState *env) |
fd6ce8f6 | 695 | { |
9349b4f9 | 696 | CPUArchState **penv; |
6a00d601 FB |
697 | int cpu_index; |
698 | ||
c2764719 PB |
699 | #if defined(CONFIG_USER_ONLY) |
700 | cpu_list_lock(); | |
701 | #endif | |
6a00d601 FB |
702 | env->next_cpu = NULL; |
703 | penv = &first_cpu; | |
704 | cpu_index = 0; | |
705 | while (*penv != NULL) { | |
1e9fa730 | 706 | penv = &(*penv)->next_cpu; |
6a00d601 FB |
707 | cpu_index++; |
708 | } | |
709 | env->cpu_index = cpu_index; | |
268a362c | 710 | env->numa_node = 0; |
72cf2d4f BS |
711 | QTAILQ_INIT(&env->breakpoints); |
712 | QTAILQ_INIT(&env->watchpoints); | |
dc7a09cf JK |
713 | #ifndef CONFIG_USER_ONLY |
714 | env->thread_id = qemu_get_thread_id(); | |
715 | #endif | |
6a00d601 | 716 | *penv = env; |
c2764719 PB |
717 | #if defined(CONFIG_USER_ONLY) |
718 | cpu_list_unlock(); | |
719 | #endif | |
b3c7724c | 720 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
0be71e32 AW |
721 | vmstate_register(NULL, cpu_index, &vmstate_cpu_common, env); |
722 | register_savevm(NULL, "cpu", cpu_index, CPU_SAVE_VERSION, | |
b3c7724c PB |
723 | cpu_save, cpu_load, env); |
724 | #endif | |
fd6ce8f6 FB |
725 | } |
726 | ||
d1a1eb74 TG |
727 | /* Allocate a new translation block. Flush the translation buffer if |
728 | too many translation blocks or too much generated code. */ | |
729 | static TranslationBlock *tb_alloc(target_ulong pc) | |
730 | { | |
731 | TranslationBlock *tb; | |
732 | ||
733 | if (nb_tbs >= code_gen_max_blocks || | |
734 | (code_gen_ptr - code_gen_buffer) >= code_gen_buffer_max_size) | |
735 | return NULL; | |
736 | tb = &tbs[nb_tbs++]; | |
737 | tb->pc = pc; | |
738 | tb->cflags = 0; | |
739 | return tb; | |
740 | } | |
741 | ||
742 | void tb_free(TranslationBlock *tb) | |
743 | { | |
744 | /* In practice this is mostly used for single use temporary TB | |
745 | Ignore the hard cases and just back up if this TB happens to | |
746 | be the last one generated. */ | |
747 | if (nb_tbs > 0 && tb == &tbs[nb_tbs - 1]) { | |
748 | code_gen_ptr = tb->tc_ptr; | |
749 | nb_tbs--; | |
750 | } | |
751 | } | |
752 | ||
9fa3e853 FB |
753 | static inline void invalidate_page_bitmap(PageDesc *p) |
754 | { | |
755 | if (p->code_bitmap) { | |
7267c094 | 756 | g_free(p->code_bitmap); |
9fa3e853 FB |
757 | p->code_bitmap = NULL; |
758 | } | |
759 | p->code_write_count = 0; | |
760 | } | |
761 | ||
5cd2c5b6 RH |
762 | /* Set to NULL all the 'first_tb' fields in all PageDescs. */ |
763 | ||
764 | static void page_flush_tb_1 (int level, void **lp) | |
fd6ce8f6 | 765 | { |
5cd2c5b6 | 766 | int i; |
fd6ce8f6 | 767 | |
5cd2c5b6 RH |
768 | if (*lp == NULL) { |
769 | return; | |
770 | } | |
771 | if (level == 0) { | |
772 | PageDesc *pd = *lp; | |
7296abac | 773 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
774 | pd[i].first_tb = NULL; |
775 | invalidate_page_bitmap(pd + i); | |
fd6ce8f6 | 776 | } |
5cd2c5b6 RH |
777 | } else { |
778 | void **pp = *lp; | |
7296abac | 779 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
780 | page_flush_tb_1 (level - 1, pp + i); |
781 | } | |
782 | } | |
783 | } | |
784 | ||
785 | static void page_flush_tb(void) | |
786 | { | |
787 | int i; | |
788 | for (i = 0; i < V_L1_SIZE; i++) { | |
789 | page_flush_tb_1(V_L1_SHIFT / L2_BITS - 1, l1_map + i); | |
fd6ce8f6 FB |
790 | } |
791 | } | |
792 | ||
793 | /* flush all the translation blocks */ | |
d4e8164f | 794 | /* XXX: tb_flush is currently not thread safe */ |
9349b4f9 | 795 | void tb_flush(CPUArchState *env1) |
fd6ce8f6 | 796 | { |
9349b4f9 | 797 | CPUArchState *env; |
0124311e | 798 | #if defined(DEBUG_FLUSH) |
ab3d1727 BS |
799 | printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n", |
800 | (unsigned long)(code_gen_ptr - code_gen_buffer), | |
801 | nb_tbs, nb_tbs > 0 ? | |
802 | ((unsigned long)(code_gen_ptr - code_gen_buffer)) / nb_tbs : 0); | |
fd6ce8f6 | 803 | #endif |
26a5f13b | 804 | if ((unsigned long)(code_gen_ptr - code_gen_buffer) > code_gen_buffer_size) |
a208e54a PB |
805 | cpu_abort(env1, "Internal error: code buffer overflow\n"); |
806 | ||
fd6ce8f6 | 807 | nb_tbs = 0; |
3b46e624 | 808 | |
6a00d601 FB |
809 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
810 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); | |
811 | } | |
9fa3e853 | 812 | |
8a8a608f | 813 | memset (tb_phys_hash, 0, CODE_GEN_PHYS_HASH_SIZE * sizeof (void *)); |
fd6ce8f6 | 814 | page_flush_tb(); |
9fa3e853 | 815 | |
fd6ce8f6 | 816 | code_gen_ptr = code_gen_buffer; |
d4e8164f FB |
817 | /* XXX: flush processor icache at this point if cache flush is |
818 | expensive */ | |
e3db7226 | 819 | tb_flush_count++; |
fd6ce8f6 FB |
820 | } |
821 | ||
822 | #ifdef DEBUG_TB_CHECK | |
823 | ||
bc98a7ef | 824 | static void tb_invalidate_check(target_ulong address) |
fd6ce8f6 FB |
825 | { |
826 | TranslationBlock *tb; | |
827 | int i; | |
828 | address &= TARGET_PAGE_MASK; | |
99773bd4 PB |
829 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
830 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { | |
fd6ce8f6 FB |
831 | if (!(address + TARGET_PAGE_SIZE <= tb->pc || |
832 | address >= tb->pc + tb->size)) { | |
0bf9e31a BS |
833 | printf("ERROR invalidate: address=" TARGET_FMT_lx |
834 | " PC=%08lx size=%04x\n", | |
99773bd4 | 835 | address, (long)tb->pc, tb->size); |
fd6ce8f6 FB |
836 | } |
837 | } | |
838 | } | |
839 | } | |
840 | ||
841 | /* verify that all the pages have correct rights for code */ | |
842 | static void tb_page_check(void) | |
843 | { | |
844 | TranslationBlock *tb; | |
845 | int i, flags1, flags2; | |
3b46e624 | 846 | |
99773bd4 PB |
847 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
848 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { | |
fd6ce8f6 FB |
849 | flags1 = page_get_flags(tb->pc); |
850 | flags2 = page_get_flags(tb->pc + tb->size - 1); | |
851 | if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) { | |
852 | printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n", | |
99773bd4 | 853 | (long)tb->pc, tb->size, flags1, flags2); |
fd6ce8f6 FB |
854 | } |
855 | } | |
856 | } | |
857 | } | |
858 | ||
859 | #endif | |
860 | ||
861 | /* invalidate one TB */ | |
862 | static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb, | |
863 | int next_offset) | |
864 | { | |
865 | TranslationBlock *tb1; | |
866 | for(;;) { | |
867 | tb1 = *ptb; | |
868 | if (tb1 == tb) { | |
869 | *ptb = *(TranslationBlock **)((char *)tb1 + next_offset); | |
870 | break; | |
871 | } | |
872 | ptb = (TranslationBlock **)((char *)tb1 + next_offset); | |
873 | } | |
874 | } | |
875 | ||
9fa3e853 FB |
876 | static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb) |
877 | { | |
878 | TranslationBlock *tb1; | |
879 | unsigned int n1; | |
880 | ||
881 | for(;;) { | |
882 | tb1 = *ptb; | |
8efe0ca8 SW |
883 | n1 = (uintptr_t)tb1 & 3; |
884 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
9fa3e853 FB |
885 | if (tb1 == tb) { |
886 | *ptb = tb1->page_next[n1]; | |
887 | break; | |
888 | } | |
889 | ptb = &tb1->page_next[n1]; | |
890 | } | |
891 | } | |
892 | ||
d4e8164f FB |
893 | static inline void tb_jmp_remove(TranslationBlock *tb, int n) |
894 | { | |
895 | TranslationBlock *tb1, **ptb; | |
896 | unsigned int n1; | |
897 | ||
898 | ptb = &tb->jmp_next[n]; | |
899 | tb1 = *ptb; | |
900 | if (tb1) { | |
901 | /* find tb(n) in circular list */ | |
902 | for(;;) { | |
903 | tb1 = *ptb; | |
8efe0ca8 SW |
904 | n1 = (uintptr_t)tb1 & 3; |
905 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
d4e8164f FB |
906 | if (n1 == n && tb1 == tb) |
907 | break; | |
908 | if (n1 == 2) { | |
909 | ptb = &tb1->jmp_first; | |
910 | } else { | |
911 | ptb = &tb1->jmp_next[n1]; | |
912 | } | |
913 | } | |
914 | /* now we can suppress tb(n) from the list */ | |
915 | *ptb = tb->jmp_next[n]; | |
916 | ||
917 | tb->jmp_next[n] = NULL; | |
918 | } | |
919 | } | |
920 | ||
921 | /* reset the jump entry 'n' of a TB so that it is not chained to | |
922 | another TB */ | |
923 | static inline void tb_reset_jump(TranslationBlock *tb, int n) | |
924 | { | |
8efe0ca8 | 925 | tb_set_jmp_target(tb, n, (uintptr_t)(tb->tc_ptr + tb->tb_next_offset[n])); |
d4e8164f FB |
926 | } |
927 | ||
41c1b1c9 | 928 | void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr) |
fd6ce8f6 | 929 | { |
9349b4f9 | 930 | CPUArchState *env; |
8a40a180 | 931 | PageDesc *p; |
d4e8164f | 932 | unsigned int h, n1; |
41c1b1c9 | 933 | tb_page_addr_t phys_pc; |
8a40a180 | 934 | TranslationBlock *tb1, *tb2; |
3b46e624 | 935 | |
8a40a180 FB |
936 | /* remove the TB from the hash list */ |
937 | phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
938 | h = tb_phys_hash_func(phys_pc); | |
5fafdf24 | 939 | tb_remove(&tb_phys_hash[h], tb, |
8a40a180 FB |
940 | offsetof(TranslationBlock, phys_hash_next)); |
941 | ||
942 | /* remove the TB from the page list */ | |
943 | if (tb->page_addr[0] != page_addr) { | |
944 | p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS); | |
945 | tb_page_remove(&p->first_tb, tb); | |
946 | invalidate_page_bitmap(p); | |
947 | } | |
948 | if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) { | |
949 | p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS); | |
950 | tb_page_remove(&p->first_tb, tb); | |
951 | invalidate_page_bitmap(p); | |
952 | } | |
953 | ||
36bdbe54 | 954 | tb_invalidated_flag = 1; |
59817ccb | 955 | |
fd6ce8f6 | 956 | /* remove the TB from the hash list */ |
8a40a180 | 957 | h = tb_jmp_cache_hash_func(tb->pc); |
6a00d601 FB |
958 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
959 | if (env->tb_jmp_cache[h] == tb) | |
960 | env->tb_jmp_cache[h] = NULL; | |
961 | } | |
d4e8164f FB |
962 | |
963 | /* suppress this TB from the two jump lists */ | |
964 | tb_jmp_remove(tb, 0); | |
965 | tb_jmp_remove(tb, 1); | |
966 | ||
967 | /* suppress any remaining jumps to this TB */ | |
968 | tb1 = tb->jmp_first; | |
969 | for(;;) { | |
8efe0ca8 | 970 | n1 = (uintptr_t)tb1 & 3; |
d4e8164f FB |
971 | if (n1 == 2) |
972 | break; | |
8efe0ca8 | 973 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); |
d4e8164f FB |
974 | tb2 = tb1->jmp_next[n1]; |
975 | tb_reset_jump(tb1, n1); | |
976 | tb1->jmp_next[n1] = NULL; | |
977 | tb1 = tb2; | |
978 | } | |
8efe0ca8 | 979 | tb->jmp_first = (TranslationBlock *)((uintptr_t)tb | 2); /* fail safe */ |
9fa3e853 | 980 | |
e3db7226 | 981 | tb_phys_invalidate_count++; |
9fa3e853 FB |
982 | } |
983 | ||
984 | static inline void set_bits(uint8_t *tab, int start, int len) | |
985 | { | |
986 | int end, mask, end1; | |
987 | ||
988 | end = start + len; | |
989 | tab += start >> 3; | |
990 | mask = 0xff << (start & 7); | |
991 | if ((start & ~7) == (end & ~7)) { | |
992 | if (start < end) { | |
993 | mask &= ~(0xff << (end & 7)); | |
994 | *tab |= mask; | |
995 | } | |
996 | } else { | |
997 | *tab++ |= mask; | |
998 | start = (start + 8) & ~7; | |
999 | end1 = end & ~7; | |
1000 | while (start < end1) { | |
1001 | *tab++ = 0xff; | |
1002 | start += 8; | |
1003 | } | |
1004 | if (start < end) { | |
1005 | mask = ~(0xff << (end & 7)); | |
1006 | *tab |= mask; | |
1007 | } | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | static void build_page_bitmap(PageDesc *p) | |
1012 | { | |
1013 | int n, tb_start, tb_end; | |
1014 | TranslationBlock *tb; | |
3b46e624 | 1015 | |
7267c094 | 1016 | p->code_bitmap = g_malloc0(TARGET_PAGE_SIZE / 8); |
9fa3e853 FB |
1017 | |
1018 | tb = p->first_tb; | |
1019 | while (tb != NULL) { | |
8efe0ca8 SW |
1020 | n = (uintptr_t)tb & 3; |
1021 | tb = (TranslationBlock *)((uintptr_t)tb & ~3); | |
9fa3e853 FB |
1022 | /* NOTE: this is subtle as a TB may span two physical pages */ |
1023 | if (n == 0) { | |
1024 | /* NOTE: tb_end may be after the end of the page, but | |
1025 | it is not a problem */ | |
1026 | tb_start = tb->pc & ~TARGET_PAGE_MASK; | |
1027 | tb_end = tb_start + tb->size; | |
1028 | if (tb_end > TARGET_PAGE_SIZE) | |
1029 | tb_end = TARGET_PAGE_SIZE; | |
1030 | } else { | |
1031 | tb_start = 0; | |
1032 | tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
1033 | } | |
1034 | set_bits(p->code_bitmap, tb_start, tb_end - tb_start); | |
1035 | tb = tb->page_next[n]; | |
1036 | } | |
1037 | } | |
1038 | ||
9349b4f9 | 1039 | TranslationBlock *tb_gen_code(CPUArchState *env, |
2e70f6ef PB |
1040 | target_ulong pc, target_ulong cs_base, |
1041 | int flags, int cflags) | |
d720b93d FB |
1042 | { |
1043 | TranslationBlock *tb; | |
1044 | uint8_t *tc_ptr; | |
41c1b1c9 PB |
1045 | tb_page_addr_t phys_pc, phys_page2; |
1046 | target_ulong virt_page2; | |
d720b93d FB |
1047 | int code_gen_size; |
1048 | ||
41c1b1c9 | 1049 | phys_pc = get_page_addr_code(env, pc); |
c27004ec | 1050 | tb = tb_alloc(pc); |
d720b93d FB |
1051 | if (!tb) { |
1052 | /* flush must be done */ | |
1053 | tb_flush(env); | |
1054 | /* cannot fail at this point */ | |
c27004ec | 1055 | tb = tb_alloc(pc); |
2e70f6ef PB |
1056 | /* Don't forget to invalidate previous TB info. */ |
1057 | tb_invalidated_flag = 1; | |
d720b93d FB |
1058 | } |
1059 | tc_ptr = code_gen_ptr; | |
1060 | tb->tc_ptr = tc_ptr; | |
1061 | tb->cs_base = cs_base; | |
1062 | tb->flags = flags; | |
1063 | tb->cflags = cflags; | |
d07bde88 | 1064 | cpu_gen_code(env, tb, &code_gen_size); |
8efe0ca8 SW |
1065 | code_gen_ptr = (void *)(((uintptr_t)code_gen_ptr + code_gen_size + |
1066 | CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); | |
3b46e624 | 1067 | |
d720b93d | 1068 | /* check next page if needed */ |
c27004ec | 1069 | virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; |
d720b93d | 1070 | phys_page2 = -1; |
c27004ec | 1071 | if ((pc & TARGET_PAGE_MASK) != virt_page2) { |
41c1b1c9 | 1072 | phys_page2 = get_page_addr_code(env, virt_page2); |
d720b93d | 1073 | } |
41c1b1c9 | 1074 | tb_link_page(tb, phys_pc, phys_page2); |
2e70f6ef | 1075 | return tb; |
d720b93d | 1076 | } |
3b46e624 | 1077 | |
77a8f1a5 AG |
1078 | /* |
1079 | * invalidate all TBs which intersect with the target physical pages | |
1080 | * starting in range [start;end[. NOTE: start and end may refer to | |
1081 | * different physical pages. 'is_cpu_write_access' should be true if called | |
1082 | * from a real cpu write access: the virtual CPU will exit the current | |
1083 | * TB if code is modified inside this TB. | |
1084 | */ | |
1085 | void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t end, | |
1086 | int is_cpu_write_access) | |
1087 | { | |
1088 | while (start < end) { | |
1089 | tb_invalidate_phys_page_range(start, end, is_cpu_write_access); | |
1090 | start &= TARGET_PAGE_MASK; | |
1091 | start += TARGET_PAGE_SIZE; | |
1092 | } | |
1093 | } | |
1094 | ||
9fa3e853 FB |
1095 | /* invalidate all TBs which intersect with the target physical page |
1096 | starting in range [start;end[. NOTE: start and end must refer to | |
d720b93d FB |
1097 | the same physical page. 'is_cpu_write_access' should be true if called |
1098 | from a real cpu write access: the virtual CPU will exit the current | |
1099 | TB if code is modified inside this TB. */ | |
41c1b1c9 | 1100 | void tb_invalidate_phys_page_range(tb_page_addr_t start, tb_page_addr_t end, |
d720b93d FB |
1101 | int is_cpu_write_access) |
1102 | { | |
6b917547 | 1103 | TranslationBlock *tb, *tb_next, *saved_tb; |
9349b4f9 | 1104 | CPUArchState *env = cpu_single_env; |
41c1b1c9 | 1105 | tb_page_addr_t tb_start, tb_end; |
6b917547 AL |
1106 | PageDesc *p; |
1107 | int n; | |
1108 | #ifdef TARGET_HAS_PRECISE_SMC | |
1109 | int current_tb_not_found = is_cpu_write_access; | |
1110 | TranslationBlock *current_tb = NULL; | |
1111 | int current_tb_modified = 0; | |
1112 | target_ulong current_pc = 0; | |
1113 | target_ulong current_cs_base = 0; | |
1114 | int current_flags = 0; | |
1115 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
9fa3e853 FB |
1116 | |
1117 | p = page_find(start >> TARGET_PAGE_BITS); | |
5fafdf24 | 1118 | if (!p) |
9fa3e853 | 1119 | return; |
5fafdf24 | 1120 | if (!p->code_bitmap && |
d720b93d FB |
1121 | ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && |
1122 | is_cpu_write_access) { | |
9fa3e853 FB |
1123 | /* build code bitmap */ |
1124 | build_page_bitmap(p); | |
1125 | } | |
1126 | ||
1127 | /* we remove all the TBs in the range [start, end[ */ | |
1128 | /* XXX: see if in some cases it could be faster to invalidate all the code */ | |
1129 | tb = p->first_tb; | |
1130 | while (tb != NULL) { | |
8efe0ca8 SW |
1131 | n = (uintptr_t)tb & 3; |
1132 | tb = (TranslationBlock *)((uintptr_t)tb & ~3); | |
9fa3e853 FB |
1133 | tb_next = tb->page_next[n]; |
1134 | /* NOTE: this is subtle as a TB may span two physical pages */ | |
1135 | if (n == 0) { | |
1136 | /* NOTE: tb_end may be after the end of the page, but | |
1137 | it is not a problem */ | |
1138 | tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); | |
1139 | tb_end = tb_start + tb->size; | |
1140 | } else { | |
1141 | tb_start = tb->page_addr[1]; | |
1142 | tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); | |
1143 | } | |
1144 | if (!(tb_end <= start || tb_start >= end)) { | |
d720b93d FB |
1145 | #ifdef TARGET_HAS_PRECISE_SMC |
1146 | if (current_tb_not_found) { | |
1147 | current_tb_not_found = 0; | |
1148 | current_tb = NULL; | |
2e70f6ef | 1149 | if (env->mem_io_pc) { |
d720b93d | 1150 | /* now we have a real cpu fault */ |
2e70f6ef | 1151 | current_tb = tb_find_pc(env->mem_io_pc); |
d720b93d FB |
1152 | } |
1153 | } | |
1154 | if (current_tb == tb && | |
2e70f6ef | 1155 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
d720b93d FB |
1156 | /* If we are modifying the current TB, we must stop |
1157 | its execution. We could be more precise by checking | |
1158 | that the modification is after the current PC, but it | |
1159 | would require a specialized function to partially | |
1160 | restore the CPU state */ | |
3b46e624 | 1161 | |
d720b93d | 1162 | current_tb_modified = 1; |
618ba8e6 | 1163 | cpu_restore_state(current_tb, env, env->mem_io_pc); |
6b917547 AL |
1164 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
1165 | ¤t_flags); | |
d720b93d FB |
1166 | } |
1167 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
6f5a9f7e FB |
1168 | /* we need to do that to handle the case where a signal |
1169 | occurs while doing tb_phys_invalidate() */ | |
1170 | saved_tb = NULL; | |
1171 | if (env) { | |
1172 | saved_tb = env->current_tb; | |
1173 | env->current_tb = NULL; | |
1174 | } | |
9fa3e853 | 1175 | tb_phys_invalidate(tb, -1); |
6f5a9f7e FB |
1176 | if (env) { |
1177 | env->current_tb = saved_tb; | |
1178 | if (env->interrupt_request && env->current_tb) | |
1179 | cpu_interrupt(env, env->interrupt_request); | |
1180 | } | |
9fa3e853 FB |
1181 | } |
1182 | tb = tb_next; | |
1183 | } | |
1184 | #if !defined(CONFIG_USER_ONLY) | |
1185 | /* if no code remaining, no need to continue to use slow writes */ | |
1186 | if (!p->first_tb) { | |
1187 | invalidate_page_bitmap(p); | |
d720b93d | 1188 | if (is_cpu_write_access) { |
2e70f6ef | 1189 | tlb_unprotect_code_phys(env, start, env->mem_io_vaddr); |
d720b93d FB |
1190 | } |
1191 | } | |
1192 | #endif | |
1193 | #ifdef TARGET_HAS_PRECISE_SMC | |
1194 | if (current_tb_modified) { | |
1195 | /* we generate a block containing just the instruction | |
1196 | modifying the memory. It will ensure that it cannot modify | |
1197 | itself */ | |
ea1c1802 | 1198 | env->current_tb = NULL; |
2e70f6ef | 1199 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
d720b93d | 1200 | cpu_resume_from_signal(env, NULL); |
9fa3e853 | 1201 | } |
fd6ce8f6 | 1202 | #endif |
9fa3e853 | 1203 | } |
fd6ce8f6 | 1204 | |
9fa3e853 | 1205 | /* len must be <= 8 and start must be a multiple of len */ |
41c1b1c9 | 1206 | static inline void tb_invalidate_phys_page_fast(tb_page_addr_t start, int len) |
9fa3e853 FB |
1207 | { |
1208 | PageDesc *p; | |
1209 | int offset, b; | |
59817ccb | 1210 | #if 0 |
a4193c8a | 1211 | if (1) { |
93fcfe39 AL |
1212 | qemu_log("modifying code at 0x%x size=%d EIP=%x PC=%08x\n", |
1213 | cpu_single_env->mem_io_vaddr, len, | |
1214 | cpu_single_env->eip, | |
8efe0ca8 SW |
1215 | cpu_single_env->eip + |
1216 | (intptr_t)cpu_single_env->segs[R_CS].base); | |
59817ccb FB |
1217 | } |
1218 | #endif | |
9fa3e853 | 1219 | p = page_find(start >> TARGET_PAGE_BITS); |
5fafdf24 | 1220 | if (!p) |
9fa3e853 FB |
1221 | return; |
1222 | if (p->code_bitmap) { | |
1223 | offset = start & ~TARGET_PAGE_MASK; | |
1224 | b = p->code_bitmap[offset >> 3] >> (offset & 7); | |
1225 | if (b & ((1 << len) - 1)) | |
1226 | goto do_invalidate; | |
1227 | } else { | |
1228 | do_invalidate: | |
d720b93d | 1229 | tb_invalidate_phys_page_range(start, start + len, 1); |
9fa3e853 FB |
1230 | } |
1231 | } | |
1232 | ||
9fa3e853 | 1233 | #if !defined(CONFIG_SOFTMMU) |
41c1b1c9 | 1234 | static void tb_invalidate_phys_page(tb_page_addr_t addr, |
20503968 | 1235 | uintptr_t pc, void *puc) |
9fa3e853 | 1236 | { |
6b917547 | 1237 | TranslationBlock *tb; |
9fa3e853 | 1238 | PageDesc *p; |
6b917547 | 1239 | int n; |
d720b93d | 1240 | #ifdef TARGET_HAS_PRECISE_SMC |
6b917547 | 1241 | TranslationBlock *current_tb = NULL; |
9349b4f9 | 1242 | CPUArchState *env = cpu_single_env; |
6b917547 AL |
1243 | int current_tb_modified = 0; |
1244 | target_ulong current_pc = 0; | |
1245 | target_ulong current_cs_base = 0; | |
1246 | int current_flags = 0; | |
d720b93d | 1247 | #endif |
9fa3e853 FB |
1248 | |
1249 | addr &= TARGET_PAGE_MASK; | |
1250 | p = page_find(addr >> TARGET_PAGE_BITS); | |
5fafdf24 | 1251 | if (!p) |
9fa3e853 FB |
1252 | return; |
1253 | tb = p->first_tb; | |
d720b93d FB |
1254 | #ifdef TARGET_HAS_PRECISE_SMC |
1255 | if (tb && pc != 0) { | |
1256 | current_tb = tb_find_pc(pc); | |
1257 | } | |
1258 | #endif | |
9fa3e853 | 1259 | while (tb != NULL) { |
8efe0ca8 SW |
1260 | n = (uintptr_t)tb & 3; |
1261 | tb = (TranslationBlock *)((uintptr_t)tb & ~3); | |
d720b93d FB |
1262 | #ifdef TARGET_HAS_PRECISE_SMC |
1263 | if (current_tb == tb && | |
2e70f6ef | 1264 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
d720b93d FB |
1265 | /* If we are modifying the current TB, we must stop |
1266 | its execution. We could be more precise by checking | |
1267 | that the modification is after the current PC, but it | |
1268 | would require a specialized function to partially | |
1269 | restore the CPU state */ | |
3b46e624 | 1270 | |
d720b93d | 1271 | current_tb_modified = 1; |
618ba8e6 | 1272 | cpu_restore_state(current_tb, env, pc); |
6b917547 AL |
1273 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
1274 | ¤t_flags); | |
d720b93d FB |
1275 | } |
1276 | #endif /* TARGET_HAS_PRECISE_SMC */ | |
9fa3e853 FB |
1277 | tb_phys_invalidate(tb, addr); |
1278 | tb = tb->page_next[n]; | |
1279 | } | |
fd6ce8f6 | 1280 | p->first_tb = NULL; |
d720b93d FB |
1281 | #ifdef TARGET_HAS_PRECISE_SMC |
1282 | if (current_tb_modified) { | |
1283 | /* we generate a block containing just the instruction | |
1284 | modifying the memory. It will ensure that it cannot modify | |
1285 | itself */ | |
ea1c1802 | 1286 | env->current_tb = NULL; |
2e70f6ef | 1287 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
d720b93d FB |
1288 | cpu_resume_from_signal(env, puc); |
1289 | } | |
1290 | #endif | |
fd6ce8f6 | 1291 | } |
9fa3e853 | 1292 | #endif |
fd6ce8f6 FB |
1293 | |
1294 | /* add the tb in the target page and protect it if necessary */ | |
5fafdf24 | 1295 | static inline void tb_alloc_page(TranslationBlock *tb, |
41c1b1c9 | 1296 | unsigned int n, tb_page_addr_t page_addr) |
fd6ce8f6 FB |
1297 | { |
1298 | PageDesc *p; | |
4429ab44 JQ |
1299 | #ifndef CONFIG_USER_ONLY |
1300 | bool page_already_protected; | |
1301 | #endif | |
9fa3e853 FB |
1302 | |
1303 | tb->page_addr[n] = page_addr; | |
5cd2c5b6 | 1304 | p = page_find_alloc(page_addr >> TARGET_PAGE_BITS, 1); |
9fa3e853 | 1305 | tb->page_next[n] = p->first_tb; |
4429ab44 JQ |
1306 | #ifndef CONFIG_USER_ONLY |
1307 | page_already_protected = p->first_tb != NULL; | |
1308 | #endif | |
8efe0ca8 | 1309 | p->first_tb = (TranslationBlock *)((uintptr_t)tb | n); |
9fa3e853 | 1310 | invalidate_page_bitmap(p); |
fd6ce8f6 | 1311 | |
107db443 | 1312 | #if defined(TARGET_HAS_SMC) || 1 |
d720b93d | 1313 | |
9fa3e853 | 1314 | #if defined(CONFIG_USER_ONLY) |
fd6ce8f6 | 1315 | if (p->flags & PAGE_WRITE) { |
53a5960a PB |
1316 | target_ulong addr; |
1317 | PageDesc *p2; | |
9fa3e853 FB |
1318 | int prot; |
1319 | ||
fd6ce8f6 FB |
1320 | /* force the host page as non writable (writes will have a |
1321 | page fault + mprotect overhead) */ | |
53a5960a | 1322 | page_addr &= qemu_host_page_mask; |
fd6ce8f6 | 1323 | prot = 0; |
53a5960a PB |
1324 | for(addr = page_addr; addr < page_addr + qemu_host_page_size; |
1325 | addr += TARGET_PAGE_SIZE) { | |
1326 | ||
1327 | p2 = page_find (addr >> TARGET_PAGE_BITS); | |
1328 | if (!p2) | |
1329 | continue; | |
1330 | prot |= p2->flags; | |
1331 | p2->flags &= ~PAGE_WRITE; | |
53a5960a | 1332 | } |
5fafdf24 | 1333 | mprotect(g2h(page_addr), qemu_host_page_size, |
fd6ce8f6 FB |
1334 | (prot & PAGE_BITS) & ~PAGE_WRITE); |
1335 | #ifdef DEBUG_TB_INVALIDATE | |
ab3d1727 | 1336 | printf("protecting code page: 0x" TARGET_FMT_lx "\n", |
53a5960a | 1337 | page_addr); |
fd6ce8f6 | 1338 | #endif |
fd6ce8f6 | 1339 | } |
9fa3e853 FB |
1340 | #else |
1341 | /* if some code is already present, then the pages are already | |
1342 | protected. So we handle the case where only the first TB is | |
1343 | allocated in a physical page */ | |
4429ab44 | 1344 | if (!page_already_protected) { |
6a00d601 | 1345 | tlb_protect_code(page_addr); |
9fa3e853 FB |
1346 | } |
1347 | #endif | |
d720b93d FB |
1348 | |
1349 | #endif /* TARGET_HAS_SMC */ | |
fd6ce8f6 FB |
1350 | } |
1351 | ||
9fa3e853 FB |
1352 | /* add a new TB and link it to the physical page tables. phys_page2 is |
1353 | (-1) to indicate that only one page contains the TB. */ | |
41c1b1c9 PB |
1354 | void tb_link_page(TranslationBlock *tb, |
1355 | tb_page_addr_t phys_pc, tb_page_addr_t phys_page2) | |
d4e8164f | 1356 | { |
9fa3e853 FB |
1357 | unsigned int h; |
1358 | TranslationBlock **ptb; | |
1359 | ||
c8a706fe PB |
1360 | /* Grab the mmap lock to stop another thread invalidating this TB |
1361 | before we are done. */ | |
1362 | mmap_lock(); | |
9fa3e853 FB |
1363 | /* add in the physical hash table */ |
1364 | h = tb_phys_hash_func(phys_pc); | |
1365 | ptb = &tb_phys_hash[h]; | |
1366 | tb->phys_hash_next = *ptb; | |
1367 | *ptb = tb; | |
fd6ce8f6 FB |
1368 | |
1369 | /* add in the page list */ | |
9fa3e853 FB |
1370 | tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK); |
1371 | if (phys_page2 != -1) | |
1372 | tb_alloc_page(tb, 1, phys_page2); | |
1373 | else | |
1374 | tb->page_addr[1] = -1; | |
9fa3e853 | 1375 | |
8efe0ca8 | 1376 | tb->jmp_first = (TranslationBlock *)((uintptr_t)tb | 2); |
d4e8164f FB |
1377 | tb->jmp_next[0] = NULL; |
1378 | tb->jmp_next[1] = NULL; | |
1379 | ||
1380 | /* init original jump addresses */ | |
1381 | if (tb->tb_next_offset[0] != 0xffff) | |
1382 | tb_reset_jump(tb, 0); | |
1383 | if (tb->tb_next_offset[1] != 0xffff) | |
1384 | tb_reset_jump(tb, 1); | |
8a40a180 FB |
1385 | |
1386 | #ifdef DEBUG_TB_CHECK | |
1387 | tb_page_check(); | |
1388 | #endif | |
c8a706fe | 1389 | mmap_unlock(); |
fd6ce8f6 FB |
1390 | } |
1391 | ||
9fa3e853 FB |
1392 | /* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr < |
1393 | tb[1].tc_ptr. Return NULL if not found */ | |
6375e09e | 1394 | TranslationBlock *tb_find_pc(uintptr_t tc_ptr) |
fd6ce8f6 | 1395 | { |
9fa3e853 | 1396 | int m_min, m_max, m; |
8efe0ca8 | 1397 | uintptr_t v; |
9fa3e853 | 1398 | TranslationBlock *tb; |
a513fe19 FB |
1399 | |
1400 | if (nb_tbs <= 0) | |
1401 | return NULL; | |
8efe0ca8 SW |
1402 | if (tc_ptr < (uintptr_t)code_gen_buffer || |
1403 | tc_ptr >= (uintptr_t)code_gen_ptr) { | |
a513fe19 | 1404 | return NULL; |
8efe0ca8 | 1405 | } |
a513fe19 FB |
1406 | /* binary search (cf Knuth) */ |
1407 | m_min = 0; | |
1408 | m_max = nb_tbs - 1; | |
1409 | while (m_min <= m_max) { | |
1410 | m = (m_min + m_max) >> 1; | |
1411 | tb = &tbs[m]; | |
8efe0ca8 | 1412 | v = (uintptr_t)tb->tc_ptr; |
a513fe19 FB |
1413 | if (v == tc_ptr) |
1414 | return tb; | |
1415 | else if (tc_ptr < v) { | |
1416 | m_max = m - 1; | |
1417 | } else { | |
1418 | m_min = m + 1; | |
1419 | } | |
5fafdf24 | 1420 | } |
a513fe19 FB |
1421 | return &tbs[m_max]; |
1422 | } | |
7501267e | 1423 | |
ea041c0e FB |
1424 | static void tb_reset_jump_recursive(TranslationBlock *tb); |
1425 | ||
1426 | static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n) | |
1427 | { | |
1428 | TranslationBlock *tb1, *tb_next, **ptb; | |
1429 | unsigned int n1; | |
1430 | ||
1431 | tb1 = tb->jmp_next[n]; | |
1432 | if (tb1 != NULL) { | |
1433 | /* find head of list */ | |
1434 | for(;;) { | |
8efe0ca8 SW |
1435 | n1 = (uintptr_t)tb1 & 3; |
1436 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
ea041c0e FB |
1437 | if (n1 == 2) |
1438 | break; | |
1439 | tb1 = tb1->jmp_next[n1]; | |
1440 | } | |
1441 | /* we are now sure now that tb jumps to tb1 */ | |
1442 | tb_next = tb1; | |
1443 | ||
1444 | /* remove tb from the jmp_first list */ | |
1445 | ptb = &tb_next->jmp_first; | |
1446 | for(;;) { | |
1447 | tb1 = *ptb; | |
8efe0ca8 SW |
1448 | n1 = (uintptr_t)tb1 & 3; |
1449 | tb1 = (TranslationBlock *)((uintptr_t)tb1 & ~3); | |
ea041c0e FB |
1450 | if (n1 == n && tb1 == tb) |
1451 | break; | |
1452 | ptb = &tb1->jmp_next[n1]; | |
1453 | } | |
1454 | *ptb = tb->jmp_next[n]; | |
1455 | tb->jmp_next[n] = NULL; | |
3b46e624 | 1456 | |
ea041c0e FB |
1457 | /* suppress the jump to next tb in generated code */ |
1458 | tb_reset_jump(tb, n); | |
1459 | ||
0124311e | 1460 | /* suppress jumps in the tb on which we could have jumped */ |
ea041c0e FB |
1461 | tb_reset_jump_recursive(tb_next); |
1462 | } | |
1463 | } | |
1464 | ||
1465 | static void tb_reset_jump_recursive(TranslationBlock *tb) | |
1466 | { | |
1467 | tb_reset_jump_recursive2(tb, 0); | |
1468 | tb_reset_jump_recursive2(tb, 1); | |
1469 | } | |
1470 | ||
1fddef4b | 1471 | #if defined(TARGET_HAS_ICE) |
94df27fd | 1472 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 1473 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
94df27fd PB |
1474 | { |
1475 | tb_invalidate_phys_page_range(pc, pc + 1, 0); | |
1476 | } | |
1477 | #else | |
1e7855a5 | 1478 | void tb_invalidate_phys_addr(target_phys_addr_t addr) |
d720b93d | 1479 | { |
c227f099 | 1480 | ram_addr_t ram_addr; |
f3705d53 | 1481 | MemoryRegionSection *section; |
d720b93d | 1482 | |
06ef3525 | 1483 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
f3705d53 AK |
1484 | if (!(memory_region_is_ram(section->mr) |
1485 | || (section->mr->rom_device && section->mr->readable))) { | |
06ef3525 AK |
1486 | return; |
1487 | } | |
f3705d53 | 1488 | ram_addr = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 1489 | + memory_region_section_addr(section, addr); |
706cd4b5 | 1490 | tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0); |
d720b93d | 1491 | } |
1e7855a5 MF |
1492 | |
1493 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) | |
1494 | { | |
07ff3759 MF |
1495 | tb_invalidate_phys_addr(cpu_get_phys_page_debug(env, pc) | |
1496 | (pc & ~TARGET_PAGE_MASK)); | |
1e7855a5 | 1497 | } |
c27004ec | 1498 | #endif |
94df27fd | 1499 | #endif /* TARGET_HAS_ICE */ |
d720b93d | 1500 | |
c527ee8f | 1501 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 1502 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
c527ee8f PB |
1503 | |
1504 | { | |
1505 | } | |
1506 | ||
9349b4f9 | 1507 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
c527ee8f PB |
1508 | int flags, CPUWatchpoint **watchpoint) |
1509 | { | |
1510 | return -ENOSYS; | |
1511 | } | |
1512 | #else | |
6658ffb8 | 1513 | /* Add a watchpoint. */ |
9349b4f9 | 1514 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 1515 | int flags, CPUWatchpoint **watchpoint) |
6658ffb8 | 1516 | { |
b4051334 | 1517 | target_ulong len_mask = ~(len - 1); |
c0ce998e | 1518 | CPUWatchpoint *wp; |
6658ffb8 | 1519 | |
b4051334 | 1520 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
0dc23828 MF |
1521 | if ((len & (len - 1)) || (addr & ~len_mask) || |
1522 | len == 0 || len > TARGET_PAGE_SIZE) { | |
b4051334 AL |
1523 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " |
1524 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); | |
1525 | return -EINVAL; | |
1526 | } | |
7267c094 | 1527 | wp = g_malloc(sizeof(*wp)); |
a1d1bb31 AL |
1528 | |
1529 | wp->vaddr = addr; | |
b4051334 | 1530 | wp->len_mask = len_mask; |
a1d1bb31 AL |
1531 | wp->flags = flags; |
1532 | ||
2dc9f411 | 1533 | /* keep all GDB-injected watchpoints in front */ |
c0ce998e | 1534 | if (flags & BP_GDB) |
72cf2d4f | 1535 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
c0ce998e | 1536 | else |
72cf2d4f | 1537 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
6658ffb8 | 1538 | |
6658ffb8 | 1539 | tlb_flush_page(env, addr); |
a1d1bb31 AL |
1540 | |
1541 | if (watchpoint) | |
1542 | *watchpoint = wp; | |
1543 | return 0; | |
6658ffb8 PB |
1544 | } |
1545 | ||
a1d1bb31 | 1546 | /* Remove a specific watchpoint. */ |
9349b4f9 | 1547 | int cpu_watchpoint_remove(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 1548 | int flags) |
6658ffb8 | 1549 | { |
b4051334 | 1550 | target_ulong len_mask = ~(len - 1); |
a1d1bb31 | 1551 | CPUWatchpoint *wp; |
6658ffb8 | 1552 | |
72cf2d4f | 1553 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 | 1554 | if (addr == wp->vaddr && len_mask == wp->len_mask |
6e140f28 | 1555 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
a1d1bb31 | 1556 | cpu_watchpoint_remove_by_ref(env, wp); |
6658ffb8 PB |
1557 | return 0; |
1558 | } | |
1559 | } | |
a1d1bb31 | 1560 | return -ENOENT; |
6658ffb8 PB |
1561 | } |
1562 | ||
a1d1bb31 | 1563 | /* Remove a specific watchpoint by reference. */ |
9349b4f9 | 1564 | void cpu_watchpoint_remove_by_ref(CPUArchState *env, CPUWatchpoint *watchpoint) |
a1d1bb31 | 1565 | { |
72cf2d4f | 1566 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
7d03f82f | 1567 | |
a1d1bb31 AL |
1568 | tlb_flush_page(env, watchpoint->vaddr); |
1569 | ||
7267c094 | 1570 | g_free(watchpoint); |
a1d1bb31 AL |
1571 | } |
1572 | ||
1573 | /* Remove all matching watchpoints. */ | |
9349b4f9 | 1574 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 | 1575 | { |
c0ce998e | 1576 | CPUWatchpoint *wp, *next; |
a1d1bb31 | 1577 | |
72cf2d4f | 1578 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
a1d1bb31 AL |
1579 | if (wp->flags & mask) |
1580 | cpu_watchpoint_remove_by_ref(env, wp); | |
c0ce998e | 1581 | } |
7d03f82f | 1582 | } |
c527ee8f | 1583 | #endif |
7d03f82f | 1584 | |
a1d1bb31 | 1585 | /* Add a breakpoint. */ |
9349b4f9 | 1586 | int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags, |
a1d1bb31 | 1587 | CPUBreakpoint **breakpoint) |
4c3a88a2 | 1588 | { |
1fddef4b | 1589 | #if defined(TARGET_HAS_ICE) |
c0ce998e | 1590 | CPUBreakpoint *bp; |
3b46e624 | 1591 | |
7267c094 | 1592 | bp = g_malloc(sizeof(*bp)); |
4c3a88a2 | 1593 | |
a1d1bb31 AL |
1594 | bp->pc = pc; |
1595 | bp->flags = flags; | |
1596 | ||
2dc9f411 | 1597 | /* keep all GDB-injected breakpoints in front */ |
c0ce998e | 1598 | if (flags & BP_GDB) |
72cf2d4f | 1599 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
c0ce998e | 1600 | else |
72cf2d4f | 1601 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
3b46e624 | 1602 | |
d720b93d | 1603 | breakpoint_invalidate(env, pc); |
a1d1bb31 AL |
1604 | |
1605 | if (breakpoint) | |
1606 | *breakpoint = bp; | |
4c3a88a2 FB |
1607 | return 0; |
1608 | #else | |
a1d1bb31 | 1609 | return -ENOSYS; |
4c3a88a2 FB |
1610 | #endif |
1611 | } | |
1612 | ||
a1d1bb31 | 1613 | /* Remove a specific breakpoint. */ |
9349b4f9 | 1614 | int cpu_breakpoint_remove(CPUArchState *env, target_ulong pc, int flags) |
a1d1bb31 | 1615 | { |
7d03f82f | 1616 | #if defined(TARGET_HAS_ICE) |
a1d1bb31 AL |
1617 | CPUBreakpoint *bp; |
1618 | ||
72cf2d4f | 1619 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
a1d1bb31 AL |
1620 | if (bp->pc == pc && bp->flags == flags) { |
1621 | cpu_breakpoint_remove_by_ref(env, bp); | |
1622 | return 0; | |
1623 | } | |
7d03f82f | 1624 | } |
a1d1bb31 AL |
1625 | return -ENOENT; |
1626 | #else | |
1627 | return -ENOSYS; | |
7d03f82f EI |
1628 | #endif |
1629 | } | |
1630 | ||
a1d1bb31 | 1631 | /* Remove a specific breakpoint by reference. */ |
9349b4f9 | 1632 | void cpu_breakpoint_remove_by_ref(CPUArchState *env, CPUBreakpoint *breakpoint) |
4c3a88a2 | 1633 | { |
1fddef4b | 1634 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 1635 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
d720b93d | 1636 | |
a1d1bb31 AL |
1637 | breakpoint_invalidate(env, breakpoint->pc); |
1638 | ||
7267c094 | 1639 | g_free(breakpoint); |
a1d1bb31 AL |
1640 | #endif |
1641 | } | |
1642 | ||
1643 | /* Remove all matching breakpoints. */ | |
9349b4f9 | 1644 | void cpu_breakpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 AL |
1645 | { |
1646 | #if defined(TARGET_HAS_ICE) | |
c0ce998e | 1647 | CPUBreakpoint *bp, *next; |
a1d1bb31 | 1648 | |
72cf2d4f | 1649 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
a1d1bb31 AL |
1650 | if (bp->flags & mask) |
1651 | cpu_breakpoint_remove_by_ref(env, bp); | |
c0ce998e | 1652 | } |
4c3a88a2 FB |
1653 | #endif |
1654 | } | |
1655 | ||
c33a346e FB |
1656 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
1657 | CPU loop after each instruction */ | |
9349b4f9 | 1658 | void cpu_single_step(CPUArchState *env, int enabled) |
c33a346e | 1659 | { |
1fddef4b | 1660 | #if defined(TARGET_HAS_ICE) |
c33a346e FB |
1661 | if (env->singlestep_enabled != enabled) { |
1662 | env->singlestep_enabled = enabled; | |
e22a25c9 AL |
1663 | if (kvm_enabled()) |
1664 | kvm_update_guest_debug(env, 0); | |
1665 | else { | |
ccbb4d44 | 1666 | /* must flush all the translated code to avoid inconsistencies */ |
e22a25c9 AL |
1667 | /* XXX: only flush what is necessary */ |
1668 | tb_flush(env); | |
1669 | } | |
c33a346e FB |
1670 | } |
1671 | #endif | |
1672 | } | |
1673 | ||
34865134 FB |
1674 | /* enable or disable low levels log */ |
1675 | void cpu_set_log(int log_flags) | |
1676 | { | |
1677 | loglevel = log_flags; | |
1678 | if (loglevel && !logfile) { | |
11fcfab4 | 1679 | logfile = fopen(logfilename, log_append ? "a" : "w"); |
34865134 FB |
1680 | if (!logfile) { |
1681 | perror(logfilename); | |
1682 | _exit(1); | |
1683 | } | |
9fa3e853 FB |
1684 | #if !defined(CONFIG_SOFTMMU) |
1685 | /* must avoid mmap() usage of glibc by setting a buffer "by hand" */ | |
1686 | { | |
b55266b5 | 1687 | static char logfile_buf[4096]; |
9fa3e853 FB |
1688 | setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf)); |
1689 | } | |
daf767b1 SW |
1690 | #elif defined(_WIN32) |
1691 | /* Win32 doesn't support line-buffering, so use unbuffered output. */ | |
1692 | setvbuf(logfile, NULL, _IONBF, 0); | |
1693 | #else | |
34865134 | 1694 | setvbuf(logfile, NULL, _IOLBF, 0); |
9fa3e853 | 1695 | #endif |
e735b91c PB |
1696 | log_append = 1; |
1697 | } | |
1698 | if (!loglevel && logfile) { | |
1699 | fclose(logfile); | |
1700 | logfile = NULL; | |
34865134 FB |
1701 | } |
1702 | } | |
1703 | ||
1704 | void cpu_set_log_filename(const char *filename) | |
1705 | { | |
1706 | logfilename = strdup(filename); | |
e735b91c PB |
1707 | if (logfile) { |
1708 | fclose(logfile); | |
1709 | logfile = NULL; | |
1710 | } | |
1711 | cpu_set_log(loglevel); | |
34865134 | 1712 | } |
c33a346e | 1713 | |
9349b4f9 | 1714 | static void cpu_unlink_tb(CPUArchState *env) |
ea041c0e | 1715 | { |
3098dba0 AJ |
1716 | /* FIXME: TB unchaining isn't SMP safe. For now just ignore the |
1717 | problem and hope the cpu will stop of its own accord. For userspace | |
1718 | emulation this often isn't actually as bad as it sounds. Often | |
1719 | signals are used primarily to interrupt blocking syscalls. */ | |
ea041c0e | 1720 | TranslationBlock *tb; |
c227f099 | 1721 | static spinlock_t interrupt_lock = SPIN_LOCK_UNLOCKED; |
59817ccb | 1722 | |
cab1b4bd | 1723 | spin_lock(&interrupt_lock); |
3098dba0 AJ |
1724 | tb = env->current_tb; |
1725 | /* if the cpu is currently executing code, we must unlink it and | |
1726 | all the potentially executing TB */ | |
f76cfe56 | 1727 | if (tb) { |
3098dba0 AJ |
1728 | env->current_tb = NULL; |
1729 | tb_reset_jump_recursive(tb); | |
be214e6c | 1730 | } |
cab1b4bd | 1731 | spin_unlock(&interrupt_lock); |
3098dba0 AJ |
1732 | } |
1733 | ||
97ffbd8d | 1734 | #ifndef CONFIG_USER_ONLY |
3098dba0 | 1735 | /* mask must never be zero, except for A20 change call */ |
9349b4f9 | 1736 | static void tcg_handle_interrupt(CPUArchState *env, int mask) |
3098dba0 AJ |
1737 | { |
1738 | int old_mask; | |
be214e6c | 1739 | |
2e70f6ef | 1740 | old_mask = env->interrupt_request; |
68a79315 | 1741 | env->interrupt_request |= mask; |
3098dba0 | 1742 | |
8edac960 AL |
1743 | /* |
1744 | * If called from iothread context, wake the target cpu in | |
1745 | * case its halted. | |
1746 | */ | |
b7680cb6 | 1747 | if (!qemu_cpu_is_self(env)) { |
8edac960 AL |
1748 | qemu_cpu_kick(env); |
1749 | return; | |
1750 | } | |
8edac960 | 1751 | |
2e70f6ef | 1752 | if (use_icount) { |
266910c4 | 1753 | env->icount_decr.u16.high = 0xffff; |
2e70f6ef | 1754 | if (!can_do_io(env) |
be214e6c | 1755 | && (mask & ~old_mask) != 0) { |
2e70f6ef PB |
1756 | cpu_abort(env, "Raised interrupt while not in I/O function"); |
1757 | } | |
2e70f6ef | 1758 | } else { |
3098dba0 | 1759 | cpu_unlink_tb(env); |
ea041c0e FB |
1760 | } |
1761 | } | |
1762 | ||
ec6959d0 JK |
1763 | CPUInterruptHandler cpu_interrupt_handler = tcg_handle_interrupt; |
1764 | ||
97ffbd8d JK |
1765 | #else /* CONFIG_USER_ONLY */ |
1766 | ||
9349b4f9 | 1767 | void cpu_interrupt(CPUArchState *env, int mask) |
97ffbd8d JK |
1768 | { |
1769 | env->interrupt_request |= mask; | |
1770 | cpu_unlink_tb(env); | |
1771 | } | |
1772 | #endif /* CONFIG_USER_ONLY */ | |
1773 | ||
9349b4f9 | 1774 | void cpu_reset_interrupt(CPUArchState *env, int mask) |
b54ad049 FB |
1775 | { |
1776 | env->interrupt_request &= ~mask; | |
1777 | } | |
1778 | ||
9349b4f9 | 1779 | void cpu_exit(CPUArchState *env) |
3098dba0 AJ |
1780 | { |
1781 | env->exit_request = 1; | |
1782 | cpu_unlink_tb(env); | |
1783 | } | |
1784 | ||
c7cd6a37 | 1785 | const CPULogItem cpu_log_items[] = { |
5fafdf24 | 1786 | { CPU_LOG_TB_OUT_ASM, "out_asm", |
f193c797 FB |
1787 | "show generated host assembly code for each compiled TB" }, |
1788 | { CPU_LOG_TB_IN_ASM, "in_asm", | |
1789 | "show target assembly code for each compiled TB" }, | |
5fafdf24 | 1790 | { CPU_LOG_TB_OP, "op", |
57fec1fe | 1791 | "show micro ops for each compiled TB" }, |
f193c797 | 1792 | { CPU_LOG_TB_OP_OPT, "op_opt", |
e01a1157 BS |
1793 | "show micro ops " |
1794 | #ifdef TARGET_I386 | |
1795 | "before eflags optimization and " | |
f193c797 | 1796 | #endif |
e01a1157 | 1797 | "after liveness analysis" }, |
f193c797 FB |
1798 | { CPU_LOG_INT, "int", |
1799 | "show interrupts/exceptions in short format" }, | |
1800 | { CPU_LOG_EXEC, "exec", | |
1801 | "show trace before each executed TB (lots of logs)" }, | |
9fddaa0c | 1802 | { CPU_LOG_TB_CPU, "cpu", |
e91c8a77 | 1803 | "show CPU state before block translation" }, |
f193c797 FB |
1804 | #ifdef TARGET_I386 |
1805 | { CPU_LOG_PCALL, "pcall", | |
1806 | "show protected mode far calls/returns/exceptions" }, | |
eca1bdf4 AL |
1807 | { CPU_LOG_RESET, "cpu_reset", |
1808 | "show CPU state before CPU resets" }, | |
f193c797 | 1809 | #endif |
8e3a9fd2 | 1810 | #ifdef DEBUG_IOPORT |
fd872598 FB |
1811 | { CPU_LOG_IOPORT, "ioport", |
1812 | "show all i/o ports accesses" }, | |
8e3a9fd2 | 1813 | #endif |
f193c797 FB |
1814 | { 0, NULL, NULL }, |
1815 | }; | |
1816 | ||
1817 | static int cmp1(const char *s1, int n, const char *s2) | |
1818 | { | |
1819 | if (strlen(s2) != n) | |
1820 | return 0; | |
1821 | return memcmp(s1, s2, n) == 0; | |
1822 | } | |
3b46e624 | 1823 | |
f193c797 FB |
1824 | /* takes a comma separated list of log masks. Return 0 if error. */ |
1825 | int cpu_str_to_log_mask(const char *str) | |
1826 | { | |
c7cd6a37 | 1827 | const CPULogItem *item; |
f193c797 FB |
1828 | int mask; |
1829 | const char *p, *p1; | |
1830 | ||
1831 | p = str; | |
1832 | mask = 0; | |
1833 | for(;;) { | |
1834 | p1 = strchr(p, ','); | |
1835 | if (!p1) | |
1836 | p1 = p + strlen(p); | |
9742bf26 YT |
1837 | if(cmp1(p,p1-p,"all")) { |
1838 | for(item = cpu_log_items; item->mask != 0; item++) { | |
1839 | mask |= item->mask; | |
1840 | } | |
1841 | } else { | |
1842 | for(item = cpu_log_items; item->mask != 0; item++) { | |
1843 | if (cmp1(p, p1 - p, item->name)) | |
1844 | goto found; | |
1845 | } | |
1846 | return 0; | |
f193c797 | 1847 | } |
f193c797 FB |
1848 | found: |
1849 | mask |= item->mask; | |
1850 | if (*p1 != ',') | |
1851 | break; | |
1852 | p = p1 + 1; | |
1853 | } | |
1854 | return mask; | |
1855 | } | |
ea041c0e | 1856 | |
9349b4f9 | 1857 | void cpu_abort(CPUArchState *env, const char *fmt, ...) |
7501267e FB |
1858 | { |
1859 | va_list ap; | |
493ae1f0 | 1860 | va_list ap2; |
7501267e FB |
1861 | |
1862 | va_start(ap, fmt); | |
493ae1f0 | 1863 | va_copy(ap2, ap); |
7501267e FB |
1864 | fprintf(stderr, "qemu: fatal: "); |
1865 | vfprintf(stderr, fmt, ap); | |
1866 | fprintf(stderr, "\n"); | |
1867 | #ifdef TARGET_I386 | |
7fe48483 FB |
1868 | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP); |
1869 | #else | |
1870 | cpu_dump_state(env, stderr, fprintf, 0); | |
7501267e | 1871 | #endif |
93fcfe39 AL |
1872 | if (qemu_log_enabled()) { |
1873 | qemu_log("qemu: fatal: "); | |
1874 | qemu_log_vprintf(fmt, ap2); | |
1875 | qemu_log("\n"); | |
f9373291 | 1876 | #ifdef TARGET_I386 |
93fcfe39 | 1877 | log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
f9373291 | 1878 | #else |
93fcfe39 | 1879 | log_cpu_state(env, 0); |
f9373291 | 1880 | #endif |
31b1a7b4 | 1881 | qemu_log_flush(); |
93fcfe39 | 1882 | qemu_log_close(); |
924edcae | 1883 | } |
493ae1f0 | 1884 | va_end(ap2); |
f9373291 | 1885 | va_end(ap); |
fd052bf6 RV |
1886 | #if defined(CONFIG_USER_ONLY) |
1887 | { | |
1888 | struct sigaction act; | |
1889 | sigfillset(&act.sa_mask); | |
1890 | act.sa_handler = SIG_DFL; | |
1891 | sigaction(SIGABRT, &act, NULL); | |
1892 | } | |
1893 | #endif | |
7501267e FB |
1894 | abort(); |
1895 | } | |
1896 | ||
9349b4f9 | 1897 | CPUArchState *cpu_copy(CPUArchState *env) |
c5be9f08 | 1898 | { |
9349b4f9 AF |
1899 | CPUArchState *new_env = cpu_init(env->cpu_model_str); |
1900 | CPUArchState *next_cpu = new_env->next_cpu; | |
c5be9f08 | 1901 | int cpu_index = new_env->cpu_index; |
5a38f081 AL |
1902 | #if defined(TARGET_HAS_ICE) |
1903 | CPUBreakpoint *bp; | |
1904 | CPUWatchpoint *wp; | |
1905 | #endif | |
1906 | ||
9349b4f9 | 1907 | memcpy(new_env, env, sizeof(CPUArchState)); |
5a38f081 AL |
1908 | |
1909 | /* Preserve chaining and index. */ | |
c5be9f08 TS |
1910 | new_env->next_cpu = next_cpu; |
1911 | new_env->cpu_index = cpu_index; | |
5a38f081 AL |
1912 | |
1913 | /* Clone all break/watchpoints. | |
1914 | Note: Once we support ptrace with hw-debug register access, make sure | |
1915 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
72cf2d4f BS |
1916 | QTAILQ_INIT(&env->breakpoints); |
1917 | QTAILQ_INIT(&env->watchpoints); | |
5a38f081 | 1918 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 1919 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
5a38f081 AL |
1920 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
1921 | } | |
72cf2d4f | 1922 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
5a38f081 AL |
1923 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
1924 | wp->flags, NULL); | |
1925 | } | |
1926 | #endif | |
1927 | ||
c5be9f08 TS |
1928 | return new_env; |
1929 | } | |
1930 | ||
0124311e | 1931 | #if !defined(CONFIG_USER_ONLY) |
0cac1b66 | 1932 | void tb_flush_jmp_cache(CPUArchState *env, target_ulong addr) |
5c751e99 EI |
1933 | { |
1934 | unsigned int i; | |
1935 | ||
1936 | /* Discard jump cache entries for any tb which might potentially | |
1937 | overlap the flushed page. */ | |
1938 | i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE); | |
1939 | memset (&env->tb_jmp_cache[i], 0, | |
9742bf26 | 1940 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
5c751e99 EI |
1941 | |
1942 | i = tb_jmp_cache_hash_page(addr); | |
1943 | memset (&env->tb_jmp_cache[i], 0, | |
9742bf26 | 1944 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
5c751e99 EI |
1945 | } |
1946 | ||
5579c7f3 | 1947 | /* Note: start and end must be within the same ram block. */ |
c227f099 | 1948 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
0a962c02 | 1949 | int dirty_flags) |
1ccde1cb | 1950 | { |
8efe0ca8 | 1951 | uintptr_t length, start1; |
1ccde1cb FB |
1952 | |
1953 | start &= TARGET_PAGE_MASK; | |
1954 | end = TARGET_PAGE_ALIGN(end); | |
1955 | ||
1956 | length = end - start; | |
1957 | if (length == 0) | |
1958 | return; | |
f7c11b53 | 1959 | cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); |
f23db169 | 1960 | |
1ccde1cb FB |
1961 | /* we modify the TLB cache so that the dirty bit will be set again |
1962 | when accessing the range */ | |
8efe0ca8 | 1963 | start1 = (uintptr_t)qemu_safe_ram_ptr(start); |
a57d23e4 | 1964 | /* Check that we don't span multiple blocks - this breaks the |
5579c7f3 | 1965 | address comparisons below. */ |
8efe0ca8 | 1966 | if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1 |
5579c7f3 PB |
1967 | != (end - 1) - start) { |
1968 | abort(); | |
1969 | } | |
e5548617 | 1970 | cpu_tlb_reset_dirty_all(start1, length); |
1ccde1cb FB |
1971 | } |
1972 | ||
74576198 AL |
1973 | int cpu_physical_memory_set_dirty_tracking(int enable) |
1974 | { | |
f6f3fbca | 1975 | int ret = 0; |
74576198 | 1976 | in_migration = enable; |
f6f3fbca | 1977 | return ret; |
74576198 AL |
1978 | } |
1979 | ||
e5548617 BS |
1980 | target_phys_addr_t memory_region_section_get_iotlb(CPUArchState *env, |
1981 | MemoryRegionSection *section, | |
1982 | target_ulong vaddr, | |
1983 | target_phys_addr_t paddr, | |
1984 | int prot, | |
1985 | target_ulong *address) | |
1986 | { | |
1987 | target_phys_addr_t iotlb; | |
1988 | CPUWatchpoint *wp; | |
1989 | ||
cc5bea60 | 1990 | if (memory_region_is_ram(section->mr)) { |
e5548617 BS |
1991 | /* Normal RAM. */ |
1992 | iotlb = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) | |
cc5bea60 | 1993 | + memory_region_section_addr(section, paddr); |
e5548617 BS |
1994 | if (!section->readonly) { |
1995 | iotlb |= phys_section_notdirty; | |
1996 | } else { | |
1997 | iotlb |= phys_section_rom; | |
1998 | } | |
1999 | } else { | |
2000 | /* IO handlers are currently passed a physical address. | |
2001 | It would be nice to pass an offset from the base address | |
2002 | of that region. This would avoid having to special case RAM, | |
2003 | and avoid full address decoding in every device. | |
2004 | We can't use the high bits of pd for this because | |
2005 | IO_MEM_ROMD uses these as a ram address. */ | |
2006 | iotlb = section - phys_sections; | |
cc5bea60 | 2007 | iotlb += memory_region_section_addr(section, paddr); |
e5548617 BS |
2008 | } |
2009 | ||
2010 | /* Make accesses to pages with watchpoints go via the | |
2011 | watchpoint trap routines. */ | |
2012 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { | |
2013 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { | |
2014 | /* Avoid trapping reads of pages with a write breakpoint. */ | |
2015 | if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) { | |
2016 | iotlb = phys_section_watch + paddr; | |
2017 | *address |= TLB_MMIO; | |
2018 | break; | |
2019 | } | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | return iotlb; | |
2024 | } | |
2025 | ||
0124311e | 2026 | #else |
edf8e2af MW |
2027 | /* |
2028 | * Walks guest process memory "regions" one by one | |
2029 | * and calls callback function 'fn' for each region. | |
2030 | */ | |
5cd2c5b6 RH |
2031 | |
2032 | struct walk_memory_regions_data | |
2033 | { | |
2034 | walk_memory_regions_fn fn; | |
2035 | void *priv; | |
8efe0ca8 | 2036 | uintptr_t start; |
5cd2c5b6 RH |
2037 | int prot; |
2038 | }; | |
2039 | ||
2040 | static int walk_memory_regions_end(struct walk_memory_regions_data *data, | |
b480d9b7 | 2041 | abi_ulong end, int new_prot) |
5cd2c5b6 RH |
2042 | { |
2043 | if (data->start != -1ul) { | |
2044 | int rc = data->fn(data->priv, data->start, end, data->prot); | |
2045 | if (rc != 0) { | |
2046 | return rc; | |
2047 | } | |
2048 | } | |
2049 | ||
2050 | data->start = (new_prot ? end : -1ul); | |
2051 | data->prot = new_prot; | |
2052 | ||
2053 | return 0; | |
2054 | } | |
2055 | ||
2056 | static int walk_memory_regions_1(struct walk_memory_regions_data *data, | |
b480d9b7 | 2057 | abi_ulong base, int level, void **lp) |
5cd2c5b6 | 2058 | { |
b480d9b7 | 2059 | abi_ulong pa; |
5cd2c5b6 RH |
2060 | int i, rc; |
2061 | ||
2062 | if (*lp == NULL) { | |
2063 | return walk_memory_regions_end(data, base, 0); | |
2064 | } | |
2065 | ||
2066 | if (level == 0) { | |
2067 | PageDesc *pd = *lp; | |
7296abac | 2068 | for (i = 0; i < L2_SIZE; ++i) { |
5cd2c5b6 RH |
2069 | int prot = pd[i].flags; |
2070 | ||
2071 | pa = base | (i << TARGET_PAGE_BITS); | |
2072 | if (prot != data->prot) { | |
2073 | rc = walk_memory_regions_end(data, pa, prot); | |
2074 | if (rc != 0) { | |
2075 | return rc; | |
9fa3e853 | 2076 | } |
9fa3e853 | 2077 | } |
5cd2c5b6 RH |
2078 | } |
2079 | } else { | |
2080 | void **pp = *lp; | |
7296abac | 2081 | for (i = 0; i < L2_SIZE; ++i) { |
b480d9b7 PB |
2082 | pa = base | ((abi_ulong)i << |
2083 | (TARGET_PAGE_BITS + L2_BITS * level)); | |
5cd2c5b6 RH |
2084 | rc = walk_memory_regions_1(data, pa, level - 1, pp + i); |
2085 | if (rc != 0) { | |
2086 | return rc; | |
2087 | } | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | return 0; | |
2092 | } | |
2093 | ||
2094 | int walk_memory_regions(void *priv, walk_memory_regions_fn fn) | |
2095 | { | |
2096 | struct walk_memory_regions_data data; | |
8efe0ca8 | 2097 | uintptr_t i; |
5cd2c5b6 RH |
2098 | |
2099 | data.fn = fn; | |
2100 | data.priv = priv; | |
2101 | data.start = -1ul; | |
2102 | data.prot = 0; | |
2103 | ||
2104 | for (i = 0; i < V_L1_SIZE; i++) { | |
b480d9b7 | 2105 | int rc = walk_memory_regions_1(&data, (abi_ulong)i << V_L1_SHIFT, |
5cd2c5b6 RH |
2106 | V_L1_SHIFT / L2_BITS - 1, l1_map + i); |
2107 | if (rc != 0) { | |
2108 | return rc; | |
9fa3e853 | 2109 | } |
33417e70 | 2110 | } |
5cd2c5b6 RH |
2111 | |
2112 | return walk_memory_regions_end(&data, 0, 0); | |
edf8e2af MW |
2113 | } |
2114 | ||
b480d9b7 PB |
2115 | static int dump_region(void *priv, abi_ulong start, |
2116 | abi_ulong end, unsigned long prot) | |
edf8e2af MW |
2117 | { |
2118 | FILE *f = (FILE *)priv; | |
2119 | ||
b480d9b7 PB |
2120 | (void) fprintf(f, TARGET_ABI_FMT_lx"-"TARGET_ABI_FMT_lx |
2121 | " "TARGET_ABI_FMT_lx" %c%c%c\n", | |
edf8e2af MW |
2122 | start, end, end - start, |
2123 | ((prot & PAGE_READ) ? 'r' : '-'), | |
2124 | ((prot & PAGE_WRITE) ? 'w' : '-'), | |
2125 | ((prot & PAGE_EXEC) ? 'x' : '-')); | |
2126 | ||
2127 | return (0); | |
2128 | } | |
2129 | ||
2130 | /* dump memory mappings */ | |
2131 | void page_dump(FILE *f) | |
2132 | { | |
2133 | (void) fprintf(f, "%-8s %-8s %-8s %s\n", | |
2134 | "start", "end", "size", "prot"); | |
2135 | walk_memory_regions(f, dump_region); | |
33417e70 FB |
2136 | } |
2137 | ||
53a5960a | 2138 | int page_get_flags(target_ulong address) |
33417e70 | 2139 | { |
9fa3e853 FB |
2140 | PageDesc *p; |
2141 | ||
2142 | p = page_find(address >> TARGET_PAGE_BITS); | |
33417e70 | 2143 | if (!p) |
9fa3e853 FB |
2144 | return 0; |
2145 | return p->flags; | |
2146 | } | |
2147 | ||
376a7909 RH |
2148 | /* Modify the flags of a page and invalidate the code if necessary. |
2149 | The flag PAGE_WRITE_ORG is positioned automatically depending | |
2150 | on PAGE_WRITE. The mmap_lock should already be held. */ | |
53a5960a | 2151 | void page_set_flags(target_ulong start, target_ulong end, int flags) |
9fa3e853 | 2152 | { |
376a7909 RH |
2153 | target_ulong addr, len; |
2154 | ||
2155 | /* This function should never be called with addresses outside the | |
2156 | guest address space. If this assert fires, it probably indicates | |
2157 | a missing call to h2g_valid. */ | |
b480d9b7 PB |
2158 | #if TARGET_ABI_BITS > L1_MAP_ADDR_SPACE_BITS |
2159 | assert(end < ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS)); | |
376a7909 RH |
2160 | #endif |
2161 | assert(start < end); | |
9fa3e853 FB |
2162 | |
2163 | start = start & TARGET_PAGE_MASK; | |
2164 | end = TARGET_PAGE_ALIGN(end); | |
376a7909 RH |
2165 | |
2166 | if (flags & PAGE_WRITE) { | |
9fa3e853 | 2167 | flags |= PAGE_WRITE_ORG; |
376a7909 RH |
2168 | } |
2169 | ||
2170 | for (addr = start, len = end - start; | |
2171 | len != 0; | |
2172 | len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { | |
2173 | PageDesc *p = page_find_alloc(addr >> TARGET_PAGE_BITS, 1); | |
2174 | ||
2175 | /* If the write protection bit is set, then we invalidate | |
2176 | the code inside. */ | |
5fafdf24 | 2177 | if (!(p->flags & PAGE_WRITE) && |
9fa3e853 FB |
2178 | (flags & PAGE_WRITE) && |
2179 | p->first_tb) { | |
d720b93d | 2180 | tb_invalidate_phys_page(addr, 0, NULL); |
9fa3e853 FB |
2181 | } |
2182 | p->flags = flags; | |
2183 | } | |
33417e70 FB |
2184 | } |
2185 | ||
3d97b40b TS |
2186 | int page_check_range(target_ulong start, target_ulong len, int flags) |
2187 | { | |
2188 | PageDesc *p; | |
2189 | target_ulong end; | |
2190 | target_ulong addr; | |
2191 | ||
376a7909 RH |
2192 | /* This function should never be called with addresses outside the |
2193 | guest address space. If this assert fires, it probably indicates | |
2194 | a missing call to h2g_valid. */ | |
338e9e6c BS |
2195 | #if TARGET_ABI_BITS > L1_MAP_ADDR_SPACE_BITS |
2196 | assert(start < ((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS)); | |
376a7909 RH |
2197 | #endif |
2198 | ||
3e0650a9 RH |
2199 | if (len == 0) { |
2200 | return 0; | |
2201 | } | |
376a7909 RH |
2202 | if (start + len - 1 < start) { |
2203 | /* We've wrapped around. */ | |
55f280c9 | 2204 | return -1; |
376a7909 | 2205 | } |
55f280c9 | 2206 | |
3d97b40b TS |
2207 | end = TARGET_PAGE_ALIGN(start+len); /* must do before we loose bits in the next step */ |
2208 | start = start & TARGET_PAGE_MASK; | |
2209 | ||
376a7909 RH |
2210 | for (addr = start, len = end - start; |
2211 | len != 0; | |
2212 | len -= TARGET_PAGE_SIZE, addr += TARGET_PAGE_SIZE) { | |
3d97b40b TS |
2213 | p = page_find(addr >> TARGET_PAGE_BITS); |
2214 | if( !p ) | |
2215 | return -1; | |
2216 | if( !(p->flags & PAGE_VALID) ) | |
2217 | return -1; | |
2218 | ||
dae3270c | 2219 | if ((flags & PAGE_READ) && !(p->flags & PAGE_READ)) |
3d97b40b | 2220 | return -1; |
dae3270c FB |
2221 | if (flags & PAGE_WRITE) { |
2222 | if (!(p->flags & PAGE_WRITE_ORG)) | |
2223 | return -1; | |
2224 | /* unprotect the page if it was put read-only because it | |
2225 | contains translated code */ | |
2226 | if (!(p->flags & PAGE_WRITE)) { | |
2227 | if (!page_unprotect(addr, 0, NULL)) | |
2228 | return -1; | |
2229 | } | |
2230 | return 0; | |
2231 | } | |
3d97b40b TS |
2232 | } |
2233 | return 0; | |
2234 | } | |
2235 | ||
9fa3e853 | 2236 | /* called from signal handler: invalidate the code and unprotect the |
ccbb4d44 | 2237 | page. Return TRUE if the fault was successfully handled. */ |
6375e09e | 2238 | int page_unprotect(target_ulong address, uintptr_t pc, void *puc) |
9fa3e853 | 2239 | { |
45d679d6 AJ |
2240 | unsigned int prot; |
2241 | PageDesc *p; | |
53a5960a | 2242 | target_ulong host_start, host_end, addr; |
9fa3e853 | 2243 | |
c8a706fe PB |
2244 | /* Technically this isn't safe inside a signal handler. However we |
2245 | know this only ever happens in a synchronous SEGV handler, so in | |
2246 | practice it seems to be ok. */ | |
2247 | mmap_lock(); | |
2248 | ||
45d679d6 AJ |
2249 | p = page_find(address >> TARGET_PAGE_BITS); |
2250 | if (!p) { | |
c8a706fe | 2251 | mmap_unlock(); |
9fa3e853 | 2252 | return 0; |
c8a706fe | 2253 | } |
45d679d6 | 2254 | |
9fa3e853 FB |
2255 | /* if the page was really writable, then we change its |
2256 | protection back to writable */ | |
45d679d6 AJ |
2257 | if ((p->flags & PAGE_WRITE_ORG) && !(p->flags & PAGE_WRITE)) { |
2258 | host_start = address & qemu_host_page_mask; | |
2259 | host_end = host_start + qemu_host_page_size; | |
2260 | ||
2261 | prot = 0; | |
2262 | for (addr = host_start ; addr < host_end ; addr += TARGET_PAGE_SIZE) { | |
2263 | p = page_find(addr >> TARGET_PAGE_BITS); | |
2264 | p->flags |= PAGE_WRITE; | |
2265 | prot |= p->flags; | |
2266 | ||
9fa3e853 FB |
2267 | /* and since the content will be modified, we must invalidate |
2268 | the corresponding translated code. */ | |
45d679d6 | 2269 | tb_invalidate_phys_page(addr, pc, puc); |
9fa3e853 | 2270 | #ifdef DEBUG_TB_CHECK |
45d679d6 | 2271 | tb_invalidate_check(addr); |
9fa3e853 | 2272 | #endif |
9fa3e853 | 2273 | } |
45d679d6 AJ |
2274 | mprotect((void *)g2h(host_start), qemu_host_page_size, |
2275 | prot & PAGE_BITS); | |
2276 | ||
2277 | mmap_unlock(); | |
2278 | return 1; | |
9fa3e853 | 2279 | } |
c8a706fe | 2280 | mmap_unlock(); |
9fa3e853 FB |
2281 | return 0; |
2282 | } | |
9fa3e853 FB |
2283 | #endif /* defined(CONFIG_USER_ONLY) */ |
2284 | ||
e2eef170 | 2285 | #if !defined(CONFIG_USER_ONLY) |
8da3ff18 | 2286 | |
c04b2b78 PB |
2287 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
2288 | typedef struct subpage_t { | |
70c68e44 | 2289 | MemoryRegion iomem; |
c04b2b78 | 2290 | target_phys_addr_t base; |
5312bd8b | 2291 | uint16_t sub_section[TARGET_PAGE_SIZE]; |
c04b2b78 PB |
2292 | } subpage_t; |
2293 | ||
c227f099 | 2294 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 2295 | uint16_t section); |
0f0cb164 | 2296 | static subpage_t *subpage_init(target_phys_addr_t base); |
5312bd8b | 2297 | static void destroy_page_desc(uint16_t section_index) |
54688b1e | 2298 | { |
5312bd8b AK |
2299 | MemoryRegionSection *section = &phys_sections[section_index]; |
2300 | MemoryRegion *mr = section->mr; | |
54688b1e AK |
2301 | |
2302 | if (mr->subpage) { | |
2303 | subpage_t *subpage = container_of(mr, subpage_t, iomem); | |
2304 | memory_region_destroy(&subpage->iomem); | |
2305 | g_free(subpage); | |
2306 | } | |
2307 | } | |
2308 | ||
4346ae3e | 2309 | static void destroy_l2_mapping(PhysPageEntry *lp, unsigned level) |
54688b1e AK |
2310 | { |
2311 | unsigned i; | |
d6f2ea22 | 2312 | PhysPageEntry *p; |
54688b1e | 2313 | |
c19e8800 | 2314 | if (lp->ptr == PHYS_MAP_NODE_NIL) { |
54688b1e AK |
2315 | return; |
2316 | } | |
2317 | ||
c19e8800 | 2318 | p = phys_map_nodes[lp->ptr]; |
4346ae3e | 2319 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 2320 | if (!p[i].is_leaf) { |
54688b1e | 2321 | destroy_l2_mapping(&p[i], level - 1); |
4346ae3e | 2322 | } else { |
c19e8800 | 2323 | destroy_page_desc(p[i].ptr); |
54688b1e | 2324 | } |
54688b1e | 2325 | } |
07f07b31 | 2326 | lp->is_leaf = 0; |
c19e8800 | 2327 | lp->ptr = PHYS_MAP_NODE_NIL; |
54688b1e AK |
2328 | } |
2329 | ||
2330 | static void destroy_all_mappings(void) | |
2331 | { | |
3eef53df | 2332 | destroy_l2_mapping(&phys_map, P_L2_LEVELS - 1); |
d6f2ea22 | 2333 | phys_map_nodes_reset(); |
54688b1e AK |
2334 | } |
2335 | ||
5312bd8b AK |
2336 | static uint16_t phys_section_add(MemoryRegionSection *section) |
2337 | { | |
2338 | if (phys_sections_nb == phys_sections_nb_alloc) { | |
2339 | phys_sections_nb_alloc = MAX(phys_sections_nb_alloc * 2, 16); | |
2340 | phys_sections = g_renew(MemoryRegionSection, phys_sections, | |
2341 | phys_sections_nb_alloc); | |
2342 | } | |
2343 | phys_sections[phys_sections_nb] = *section; | |
2344 | return phys_sections_nb++; | |
2345 | } | |
2346 | ||
2347 | static void phys_sections_clear(void) | |
2348 | { | |
2349 | phys_sections_nb = 0; | |
2350 | } | |
2351 | ||
8f2498f9 MT |
2352 | /* register physical memory. |
2353 | For RAM, 'size' must be a multiple of the target page size. | |
2354 | If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an | |
8da3ff18 PB |
2355 | io memory page. The address used when calling the IO function is |
2356 | the offset from the start of the region, plus region_offset. Both | |
ccbb4d44 | 2357 | start_addr and region_offset are rounded down to a page boundary |
8da3ff18 PB |
2358 | before calculating this offset. This should not be a problem unless |
2359 | the low bits of start_addr and region_offset differ. */ | |
0f0cb164 AK |
2360 | static void register_subpage(MemoryRegionSection *section) |
2361 | { | |
2362 | subpage_t *subpage; | |
2363 | target_phys_addr_t base = section->offset_within_address_space | |
2364 | & TARGET_PAGE_MASK; | |
f3705d53 | 2365 | MemoryRegionSection *existing = phys_page_find(base >> TARGET_PAGE_BITS); |
0f0cb164 AK |
2366 | MemoryRegionSection subsection = { |
2367 | .offset_within_address_space = base, | |
2368 | .size = TARGET_PAGE_SIZE, | |
2369 | }; | |
0f0cb164 AK |
2370 | target_phys_addr_t start, end; |
2371 | ||
f3705d53 | 2372 | assert(existing->mr->subpage || existing->mr == &io_mem_unassigned); |
0f0cb164 | 2373 | |
f3705d53 | 2374 | if (!(existing->mr->subpage)) { |
0f0cb164 AK |
2375 | subpage = subpage_init(base); |
2376 | subsection.mr = &subpage->iomem; | |
2999097b AK |
2377 | phys_page_set(base >> TARGET_PAGE_BITS, 1, |
2378 | phys_section_add(&subsection)); | |
0f0cb164 | 2379 | } else { |
f3705d53 | 2380 | subpage = container_of(existing->mr, subpage_t, iomem); |
0f0cb164 AK |
2381 | } |
2382 | start = section->offset_within_address_space & ~TARGET_PAGE_MASK; | |
2383 | end = start + section->size; | |
2384 | subpage_register(subpage, start, end, phys_section_add(section)); | |
2385 | } | |
2386 | ||
2387 | ||
2388 | static void register_multipage(MemoryRegionSection *section) | |
33417e70 | 2389 | { |
dd81124b AK |
2390 | target_phys_addr_t start_addr = section->offset_within_address_space; |
2391 | ram_addr_t size = section->size; | |
2999097b | 2392 | target_phys_addr_t addr; |
5312bd8b | 2393 | uint16_t section_index = phys_section_add(section); |
dd81124b | 2394 | |
3b8e6a2d | 2395 | assert(size); |
f6f3fbca | 2396 | |
3b8e6a2d | 2397 | addr = start_addr; |
2999097b AK |
2398 | phys_page_set(addr >> TARGET_PAGE_BITS, size >> TARGET_PAGE_BITS, |
2399 | section_index); | |
33417e70 FB |
2400 | } |
2401 | ||
0f0cb164 AK |
2402 | void cpu_register_physical_memory_log(MemoryRegionSection *section, |
2403 | bool readonly) | |
2404 | { | |
2405 | MemoryRegionSection now = *section, remain = *section; | |
2406 | ||
2407 | if ((now.offset_within_address_space & ~TARGET_PAGE_MASK) | |
2408 | || (now.size < TARGET_PAGE_SIZE)) { | |
2409 | now.size = MIN(TARGET_PAGE_ALIGN(now.offset_within_address_space) | |
2410 | - now.offset_within_address_space, | |
2411 | now.size); | |
2412 | register_subpage(&now); | |
2413 | remain.size -= now.size; | |
2414 | remain.offset_within_address_space += now.size; | |
2415 | remain.offset_within_region += now.size; | |
2416 | } | |
2417 | now = remain; | |
2418 | now.size &= TARGET_PAGE_MASK; | |
2419 | if (now.size) { | |
2420 | register_multipage(&now); | |
2421 | remain.size -= now.size; | |
2422 | remain.offset_within_address_space += now.size; | |
2423 | remain.offset_within_region += now.size; | |
2424 | } | |
2425 | now = remain; | |
2426 | if (now.size) { | |
2427 | register_subpage(&now); | |
2428 | } | |
2429 | } | |
2430 | ||
2431 | ||
c227f099 | 2432 | void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
f65ed4c1 AL |
2433 | { |
2434 | if (kvm_enabled()) | |
2435 | kvm_coalesce_mmio_region(addr, size); | |
2436 | } | |
2437 | ||
c227f099 | 2438 | void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
f65ed4c1 AL |
2439 | { |
2440 | if (kvm_enabled()) | |
2441 | kvm_uncoalesce_mmio_region(addr, size); | |
2442 | } | |
2443 | ||
62a2744c SY |
2444 | void qemu_flush_coalesced_mmio_buffer(void) |
2445 | { | |
2446 | if (kvm_enabled()) | |
2447 | kvm_flush_coalesced_mmio_buffer(); | |
2448 | } | |
2449 | ||
c902760f MT |
2450 | #if defined(__linux__) && !defined(TARGET_S390X) |
2451 | ||
2452 | #include <sys/vfs.h> | |
2453 | ||
2454 | #define HUGETLBFS_MAGIC 0x958458f6 | |
2455 | ||
2456 | static long gethugepagesize(const char *path) | |
2457 | { | |
2458 | struct statfs fs; | |
2459 | int ret; | |
2460 | ||
2461 | do { | |
9742bf26 | 2462 | ret = statfs(path, &fs); |
c902760f MT |
2463 | } while (ret != 0 && errno == EINTR); |
2464 | ||
2465 | if (ret != 0) { | |
9742bf26 YT |
2466 | perror(path); |
2467 | return 0; | |
c902760f MT |
2468 | } |
2469 | ||
2470 | if (fs.f_type != HUGETLBFS_MAGIC) | |
9742bf26 | 2471 | fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path); |
c902760f MT |
2472 | |
2473 | return fs.f_bsize; | |
2474 | } | |
2475 | ||
04b16653 AW |
2476 | static void *file_ram_alloc(RAMBlock *block, |
2477 | ram_addr_t memory, | |
2478 | const char *path) | |
c902760f MT |
2479 | { |
2480 | char *filename; | |
2481 | void *area; | |
2482 | int fd; | |
2483 | #ifdef MAP_POPULATE | |
2484 | int flags; | |
2485 | #endif | |
2486 | unsigned long hpagesize; | |
2487 | ||
2488 | hpagesize = gethugepagesize(path); | |
2489 | if (!hpagesize) { | |
9742bf26 | 2490 | return NULL; |
c902760f MT |
2491 | } |
2492 | ||
2493 | if (memory < hpagesize) { | |
2494 | return NULL; | |
2495 | } | |
2496 | ||
2497 | if (kvm_enabled() && !kvm_has_sync_mmu()) { | |
2498 | fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n"); | |
2499 | return NULL; | |
2500 | } | |
2501 | ||
2502 | if (asprintf(&filename, "%s/qemu_back_mem.XXXXXX", path) == -1) { | |
9742bf26 | 2503 | return NULL; |
c902760f MT |
2504 | } |
2505 | ||
2506 | fd = mkstemp(filename); | |
2507 | if (fd < 0) { | |
9742bf26 YT |
2508 | perror("unable to create backing store for hugepages"); |
2509 | free(filename); | |
2510 | return NULL; | |
c902760f MT |
2511 | } |
2512 | unlink(filename); | |
2513 | free(filename); | |
2514 | ||
2515 | memory = (memory+hpagesize-1) & ~(hpagesize-1); | |
2516 | ||
2517 | /* | |
2518 | * ftruncate is not supported by hugetlbfs in older | |
2519 | * hosts, so don't bother bailing out on errors. | |
2520 | * If anything goes wrong with it under other filesystems, | |
2521 | * mmap will fail. | |
2522 | */ | |
2523 | if (ftruncate(fd, memory)) | |
9742bf26 | 2524 | perror("ftruncate"); |
c902760f MT |
2525 | |
2526 | #ifdef MAP_POPULATE | |
2527 | /* NB: MAP_POPULATE won't exhaustively alloc all phys pages in the case | |
2528 | * MAP_PRIVATE is requested. For mem_prealloc we mmap as MAP_SHARED | |
2529 | * to sidestep this quirk. | |
2530 | */ | |
2531 | flags = mem_prealloc ? MAP_POPULATE | MAP_SHARED : MAP_PRIVATE; | |
2532 | area = mmap(0, memory, PROT_READ | PROT_WRITE, flags, fd, 0); | |
2533 | #else | |
2534 | area = mmap(0, memory, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); | |
2535 | #endif | |
2536 | if (area == MAP_FAILED) { | |
9742bf26 YT |
2537 | perror("file_ram_alloc: can't mmap RAM pages"); |
2538 | close(fd); | |
2539 | return (NULL); | |
c902760f | 2540 | } |
04b16653 | 2541 | block->fd = fd; |
c902760f MT |
2542 | return area; |
2543 | } | |
2544 | #endif | |
2545 | ||
d17b5288 | 2546 | static ram_addr_t find_ram_offset(ram_addr_t size) |
04b16653 AW |
2547 | { |
2548 | RAMBlock *block, *next_block; | |
3e837b2c | 2549 | ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX; |
04b16653 AW |
2550 | |
2551 | if (QLIST_EMPTY(&ram_list.blocks)) | |
2552 | return 0; | |
2553 | ||
2554 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
f15fbc4b | 2555 | ram_addr_t end, next = RAM_ADDR_MAX; |
04b16653 AW |
2556 | |
2557 | end = block->offset + block->length; | |
2558 | ||
2559 | QLIST_FOREACH(next_block, &ram_list.blocks, next) { | |
2560 | if (next_block->offset >= end) { | |
2561 | next = MIN(next, next_block->offset); | |
2562 | } | |
2563 | } | |
2564 | if (next - end >= size && next - end < mingap) { | |
3e837b2c | 2565 | offset = end; |
04b16653 AW |
2566 | mingap = next - end; |
2567 | } | |
2568 | } | |
3e837b2c AW |
2569 | |
2570 | if (offset == RAM_ADDR_MAX) { | |
2571 | fprintf(stderr, "Failed to find gap of requested size: %" PRIu64 "\n", | |
2572 | (uint64_t)size); | |
2573 | abort(); | |
2574 | } | |
2575 | ||
04b16653 AW |
2576 | return offset; |
2577 | } | |
2578 | ||
2579 | static ram_addr_t last_ram_offset(void) | |
d17b5288 AW |
2580 | { |
2581 | RAMBlock *block; | |
2582 | ram_addr_t last = 0; | |
2583 | ||
2584 | QLIST_FOREACH(block, &ram_list.blocks, next) | |
2585 | last = MAX(last, block->offset + block->length); | |
2586 | ||
2587 | return last; | |
2588 | } | |
2589 | ||
c5705a77 | 2590 | void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) |
84b89d78 CM |
2591 | { |
2592 | RAMBlock *new_block, *block; | |
2593 | ||
c5705a77 AK |
2594 | new_block = NULL; |
2595 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2596 | if (block->offset == addr) { | |
2597 | new_block = block; | |
2598 | break; | |
2599 | } | |
2600 | } | |
2601 | assert(new_block); | |
2602 | assert(!new_block->idstr[0]); | |
84b89d78 CM |
2603 | |
2604 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { | |
2605 | char *id = dev->parent_bus->info->get_dev_path(dev); | |
2606 | if (id) { | |
2607 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); | |
7267c094 | 2608 | g_free(id); |
84b89d78 CM |
2609 | } |
2610 | } | |
2611 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); | |
2612 | ||
2613 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
c5705a77 | 2614 | if (block != new_block && !strcmp(block->idstr, new_block->idstr)) { |
84b89d78 CM |
2615 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
2616 | new_block->idstr); | |
2617 | abort(); | |
2618 | } | |
2619 | } | |
c5705a77 AK |
2620 | } |
2621 | ||
2622 | ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, | |
2623 | MemoryRegion *mr) | |
2624 | { | |
2625 | RAMBlock *new_block; | |
2626 | ||
2627 | size = TARGET_PAGE_ALIGN(size); | |
2628 | new_block = g_malloc0(sizeof(*new_block)); | |
84b89d78 | 2629 | |
7c637366 | 2630 | new_block->mr = mr; |
432d268c | 2631 | new_block->offset = find_ram_offset(size); |
6977dfe6 YT |
2632 | if (host) { |
2633 | new_block->host = host; | |
cd19cfa2 | 2634 | new_block->flags |= RAM_PREALLOC_MASK; |
6977dfe6 YT |
2635 | } else { |
2636 | if (mem_path) { | |
c902760f | 2637 | #if defined (__linux__) && !defined(TARGET_S390X) |
6977dfe6 YT |
2638 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
2639 | if (!new_block->host) { | |
2640 | new_block->host = qemu_vmalloc(size); | |
e78815a5 | 2641 | qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE); |
6977dfe6 | 2642 | } |
c902760f | 2643 | #else |
6977dfe6 YT |
2644 | fprintf(stderr, "-mem-path option unsupported\n"); |
2645 | exit(1); | |
c902760f | 2646 | #endif |
6977dfe6 | 2647 | } else { |
6b02494d | 2648 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) |
ff83678a CB |
2649 | /* S390 KVM requires the topmost vma of the RAM to be smaller than |
2650 | an system defined value, which is at least 256GB. Larger systems | |
2651 | have larger values. We put the guest between the end of data | |
2652 | segment (system break) and this value. We use 32GB as a base to | |
2653 | have enough room for the system break to grow. */ | |
2654 | new_block->host = mmap((void*)0x800000000, size, | |
6977dfe6 | 2655 | PROT_EXEC|PROT_READ|PROT_WRITE, |
ff83678a | 2656 | MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0); |
fb8b2735 AG |
2657 | if (new_block->host == MAP_FAILED) { |
2658 | fprintf(stderr, "Allocating RAM failed\n"); | |
2659 | abort(); | |
2660 | } | |
6b02494d | 2661 | #else |
868bb33f | 2662 | if (xen_enabled()) { |
fce537d4 | 2663 | xen_ram_alloc(new_block->offset, size, mr); |
432d268c JN |
2664 | } else { |
2665 | new_block->host = qemu_vmalloc(size); | |
2666 | } | |
6b02494d | 2667 | #endif |
e78815a5 | 2668 | qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE); |
6977dfe6 | 2669 | } |
c902760f | 2670 | } |
94a6b54f PB |
2671 | new_block->length = size; |
2672 | ||
f471a17e | 2673 | QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next); |
94a6b54f | 2674 | |
7267c094 | 2675 | ram_list.phys_dirty = g_realloc(ram_list.phys_dirty, |
04b16653 | 2676 | last_ram_offset() >> TARGET_PAGE_BITS); |
d17b5288 | 2677 | memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), |
94a6b54f PB |
2678 | 0xff, size >> TARGET_PAGE_BITS); |
2679 | ||
6f0437e8 JK |
2680 | if (kvm_enabled()) |
2681 | kvm_setup_guest_memory(new_block->host, size); | |
2682 | ||
94a6b54f PB |
2683 | return new_block->offset; |
2684 | } | |
e9a1ab19 | 2685 | |
c5705a77 | 2686 | ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) |
6977dfe6 | 2687 | { |
c5705a77 | 2688 | return qemu_ram_alloc_from_ptr(size, NULL, mr); |
6977dfe6 YT |
2689 | } |
2690 | ||
1f2e98b6 AW |
2691 | void qemu_ram_free_from_ptr(ram_addr_t addr) |
2692 | { | |
2693 | RAMBlock *block; | |
2694 | ||
2695 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2696 | if (addr == block->offset) { | |
2697 | QLIST_REMOVE(block, next); | |
7267c094 | 2698 | g_free(block); |
1f2e98b6 AW |
2699 | return; |
2700 | } | |
2701 | } | |
2702 | } | |
2703 | ||
c227f099 | 2704 | void qemu_ram_free(ram_addr_t addr) |
e9a1ab19 | 2705 | { |
04b16653 AW |
2706 | RAMBlock *block; |
2707 | ||
2708 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2709 | if (addr == block->offset) { | |
2710 | QLIST_REMOVE(block, next); | |
cd19cfa2 HY |
2711 | if (block->flags & RAM_PREALLOC_MASK) { |
2712 | ; | |
2713 | } else if (mem_path) { | |
04b16653 AW |
2714 | #if defined (__linux__) && !defined(TARGET_S390X) |
2715 | if (block->fd) { | |
2716 | munmap(block->host, block->length); | |
2717 | close(block->fd); | |
2718 | } else { | |
2719 | qemu_vfree(block->host); | |
2720 | } | |
fd28aa13 JK |
2721 | #else |
2722 | abort(); | |
04b16653 AW |
2723 | #endif |
2724 | } else { | |
2725 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
2726 | munmap(block->host, block->length); | |
2727 | #else | |
868bb33f | 2728 | if (xen_enabled()) { |
e41d7c69 | 2729 | xen_invalidate_map_cache_entry(block->host); |
432d268c JN |
2730 | } else { |
2731 | qemu_vfree(block->host); | |
2732 | } | |
04b16653 AW |
2733 | #endif |
2734 | } | |
7267c094 | 2735 | g_free(block); |
04b16653 AW |
2736 | return; |
2737 | } | |
2738 | } | |
2739 | ||
e9a1ab19 FB |
2740 | } |
2741 | ||
cd19cfa2 HY |
2742 | #ifndef _WIN32 |
2743 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) | |
2744 | { | |
2745 | RAMBlock *block; | |
2746 | ram_addr_t offset; | |
2747 | int flags; | |
2748 | void *area, *vaddr; | |
2749 | ||
2750 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2751 | offset = addr - block->offset; | |
2752 | if (offset < block->length) { | |
2753 | vaddr = block->host + offset; | |
2754 | if (block->flags & RAM_PREALLOC_MASK) { | |
2755 | ; | |
2756 | } else { | |
2757 | flags = MAP_FIXED; | |
2758 | munmap(vaddr, length); | |
2759 | if (mem_path) { | |
2760 | #if defined(__linux__) && !defined(TARGET_S390X) | |
2761 | if (block->fd) { | |
2762 | #ifdef MAP_POPULATE | |
2763 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : | |
2764 | MAP_PRIVATE; | |
2765 | #else | |
2766 | flags |= MAP_PRIVATE; | |
2767 | #endif | |
2768 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2769 | flags, block->fd, offset); | |
2770 | } else { | |
2771 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
2772 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2773 | flags, -1, 0); | |
2774 | } | |
fd28aa13 JK |
2775 | #else |
2776 | abort(); | |
cd19cfa2 HY |
2777 | #endif |
2778 | } else { | |
2779 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
2780 | flags |= MAP_SHARED | MAP_ANONYMOUS; | |
2781 | area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE, | |
2782 | flags, -1, 0); | |
2783 | #else | |
2784 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
2785 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
2786 | flags, -1, 0); | |
2787 | #endif | |
2788 | } | |
2789 | if (area != vaddr) { | |
f15fbc4b AP |
2790 | fprintf(stderr, "Could not remap addr: " |
2791 | RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n", | |
cd19cfa2 HY |
2792 | length, addr); |
2793 | exit(1); | |
2794 | } | |
2795 | qemu_madvise(vaddr, length, QEMU_MADV_MERGEABLE); | |
2796 | } | |
2797 | return; | |
2798 | } | |
2799 | } | |
2800 | } | |
2801 | #endif /* !_WIN32 */ | |
2802 | ||
dc828ca1 | 2803 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
5579c7f3 PB |
2804 | With the exception of the softmmu code in this file, this should |
2805 | only be used for local memory (e.g. video ram) that the device owns, | |
2806 | and knows it isn't going to access beyond the end of the block. | |
2807 | ||
2808 | It should not be used for general purpose DMA. | |
2809 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. | |
2810 | */ | |
c227f099 | 2811 | void *qemu_get_ram_ptr(ram_addr_t addr) |
dc828ca1 | 2812 | { |
94a6b54f PB |
2813 | RAMBlock *block; |
2814 | ||
f471a17e AW |
2815 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
2816 | if (addr - block->offset < block->length) { | |
7d82af38 VP |
2817 | /* Move this entry to to start of the list. */ |
2818 | if (block != QLIST_FIRST(&ram_list.blocks)) { | |
2819 | QLIST_REMOVE(block, next); | |
2820 | QLIST_INSERT_HEAD(&ram_list.blocks, block, next); | |
2821 | } | |
868bb33f | 2822 | if (xen_enabled()) { |
432d268c JN |
2823 | /* We need to check if the requested address is in the RAM |
2824 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 2825 | * In that case just map until the end of the page. |
432d268c JN |
2826 | */ |
2827 | if (block->offset == 0) { | |
e41d7c69 | 2828 | return xen_map_cache(addr, 0, 0); |
432d268c | 2829 | } else if (block->host == NULL) { |
e41d7c69 JK |
2830 | block->host = |
2831 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
2832 | } |
2833 | } | |
f471a17e AW |
2834 | return block->host + (addr - block->offset); |
2835 | } | |
94a6b54f | 2836 | } |
f471a17e AW |
2837 | |
2838 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
2839 | abort(); | |
2840 | ||
2841 | return NULL; | |
dc828ca1 PB |
2842 | } |
2843 | ||
b2e0a138 MT |
2844 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
2845 | * Same as qemu_get_ram_ptr but avoid reordering ramblocks. | |
2846 | */ | |
2847 | void *qemu_safe_ram_ptr(ram_addr_t addr) | |
2848 | { | |
2849 | RAMBlock *block; | |
2850 | ||
2851 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2852 | if (addr - block->offset < block->length) { | |
868bb33f | 2853 | if (xen_enabled()) { |
432d268c JN |
2854 | /* We need to check if the requested address is in the RAM |
2855 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 2856 | * In that case just map until the end of the page. |
432d268c JN |
2857 | */ |
2858 | if (block->offset == 0) { | |
e41d7c69 | 2859 | return xen_map_cache(addr, 0, 0); |
432d268c | 2860 | } else if (block->host == NULL) { |
e41d7c69 JK |
2861 | block->host = |
2862 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
2863 | } |
2864 | } | |
b2e0a138 MT |
2865 | return block->host + (addr - block->offset); |
2866 | } | |
2867 | } | |
2868 | ||
2869 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
2870 | abort(); | |
2871 | ||
2872 | return NULL; | |
2873 | } | |
2874 | ||
38bee5dc SS |
2875 | /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr |
2876 | * but takes a size argument */ | |
8ab934f9 | 2877 | void *qemu_ram_ptr_length(ram_addr_t addr, ram_addr_t *size) |
38bee5dc | 2878 | { |
8ab934f9 SS |
2879 | if (*size == 0) { |
2880 | return NULL; | |
2881 | } | |
868bb33f | 2882 | if (xen_enabled()) { |
e41d7c69 | 2883 | return xen_map_cache(addr, *size, 1); |
868bb33f | 2884 | } else { |
38bee5dc SS |
2885 | RAMBlock *block; |
2886 | ||
2887 | QLIST_FOREACH(block, &ram_list.blocks, next) { | |
2888 | if (addr - block->offset < block->length) { | |
2889 | if (addr - block->offset + *size > block->length) | |
2890 | *size = block->length - addr + block->offset; | |
2891 | return block->host + (addr - block->offset); | |
2892 | } | |
2893 | } | |
2894 | ||
2895 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
2896 | abort(); | |
38bee5dc SS |
2897 | } |
2898 | } | |
2899 | ||
050a0ddf AP |
2900 | void qemu_put_ram_ptr(void *addr) |
2901 | { | |
2902 | trace_qemu_put_ram_ptr(addr); | |
050a0ddf AP |
2903 | } |
2904 | ||
e890261f | 2905 | int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
5579c7f3 | 2906 | { |
94a6b54f PB |
2907 | RAMBlock *block; |
2908 | uint8_t *host = ptr; | |
2909 | ||
868bb33f | 2910 | if (xen_enabled()) { |
e41d7c69 | 2911 | *ram_addr = xen_ram_addr_from_mapcache(ptr); |
712c2b41 SS |
2912 | return 0; |
2913 | } | |
2914 | ||
f471a17e | 2915 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
432d268c JN |
2916 | /* This case append when the block is not mapped. */ |
2917 | if (block->host == NULL) { | |
2918 | continue; | |
2919 | } | |
f471a17e | 2920 | if (host - block->host < block->length) { |
e890261f MT |
2921 | *ram_addr = block->offset + (host - block->host); |
2922 | return 0; | |
f471a17e | 2923 | } |
94a6b54f | 2924 | } |
432d268c | 2925 | |
e890261f MT |
2926 | return -1; |
2927 | } | |
f471a17e | 2928 | |
e890261f MT |
2929 | /* Some of the softmmu routines need to translate from a host pointer |
2930 | (typically a TLB entry) back to a ram offset. */ | |
2931 | ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr) | |
2932 | { | |
2933 | ram_addr_t ram_addr; | |
f471a17e | 2934 | |
e890261f MT |
2935 | if (qemu_ram_addr_from_host(ptr, &ram_addr)) { |
2936 | fprintf(stderr, "Bad ram pointer %p\n", ptr); | |
2937 | abort(); | |
2938 | } | |
2939 | return ram_addr; | |
5579c7f3 PB |
2940 | } |
2941 | ||
0e0df1e2 AK |
2942 | static uint64_t unassigned_mem_read(void *opaque, target_phys_addr_t addr, |
2943 | unsigned size) | |
e18231a3 BS |
2944 | { |
2945 | #ifdef DEBUG_UNASSIGNED | |
2946 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); | |
2947 | #endif | |
5b450407 | 2948 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 2949 | cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size); |
e18231a3 BS |
2950 | #endif |
2951 | return 0; | |
2952 | } | |
2953 | ||
0e0df1e2 AK |
2954 | static void unassigned_mem_write(void *opaque, target_phys_addr_t addr, |
2955 | uint64_t val, unsigned size) | |
e18231a3 BS |
2956 | { |
2957 | #ifdef DEBUG_UNASSIGNED | |
0e0df1e2 | 2958 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); |
e18231a3 | 2959 | #endif |
5b450407 | 2960 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 2961 | cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size); |
67d3b957 | 2962 | #endif |
33417e70 FB |
2963 | } |
2964 | ||
0e0df1e2 AK |
2965 | static const MemoryRegionOps unassigned_mem_ops = { |
2966 | .read = unassigned_mem_read, | |
2967 | .write = unassigned_mem_write, | |
2968 | .endianness = DEVICE_NATIVE_ENDIAN, | |
2969 | }; | |
e18231a3 | 2970 | |
0e0df1e2 AK |
2971 | static uint64_t error_mem_read(void *opaque, target_phys_addr_t addr, |
2972 | unsigned size) | |
e18231a3 | 2973 | { |
0e0df1e2 | 2974 | abort(); |
e18231a3 BS |
2975 | } |
2976 | ||
0e0df1e2 AK |
2977 | static void error_mem_write(void *opaque, target_phys_addr_t addr, |
2978 | uint64_t value, unsigned size) | |
e18231a3 | 2979 | { |
0e0df1e2 | 2980 | abort(); |
33417e70 FB |
2981 | } |
2982 | ||
0e0df1e2 AK |
2983 | static const MemoryRegionOps error_mem_ops = { |
2984 | .read = error_mem_read, | |
2985 | .write = error_mem_write, | |
2986 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
2987 | }; |
2988 | ||
0e0df1e2 AK |
2989 | static const MemoryRegionOps rom_mem_ops = { |
2990 | .read = error_mem_read, | |
2991 | .write = unassigned_mem_write, | |
2992 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
2993 | }; |
2994 | ||
0e0df1e2 AK |
2995 | static void notdirty_mem_write(void *opaque, target_phys_addr_t ram_addr, |
2996 | uint64_t val, unsigned size) | |
9fa3e853 | 2997 | { |
3a7d929e | 2998 | int dirty_flags; |
f7c11b53 | 2999 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 3000 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
9fa3e853 | 3001 | #if !defined(CONFIG_USER_ONLY) |
0e0df1e2 | 3002 | tb_invalidate_phys_page_fast(ram_addr, size); |
f7c11b53 | 3003 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
9fa3e853 | 3004 | #endif |
3a7d929e | 3005 | } |
0e0df1e2 AK |
3006 | switch (size) { |
3007 | case 1: | |
3008 | stb_p(qemu_get_ram_ptr(ram_addr), val); | |
3009 | break; | |
3010 | case 2: | |
3011 | stw_p(qemu_get_ram_ptr(ram_addr), val); | |
3012 | break; | |
3013 | case 4: | |
3014 | stl_p(qemu_get_ram_ptr(ram_addr), val); | |
3015 | break; | |
3016 | default: | |
3017 | abort(); | |
3a7d929e | 3018 | } |
f23db169 | 3019 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
f7c11b53 | 3020 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
f23db169 FB |
3021 | /* we remove the notdirty callback only if the code has been |
3022 | flushed */ | |
3023 | if (dirty_flags == 0xff) | |
2e70f6ef | 3024 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
9fa3e853 FB |
3025 | } |
3026 | ||
0e0df1e2 AK |
3027 | static const MemoryRegionOps notdirty_mem_ops = { |
3028 | .read = error_mem_read, | |
3029 | .write = notdirty_mem_write, | |
3030 | .endianness = DEVICE_NATIVE_ENDIAN, | |
1ccde1cb FB |
3031 | }; |
3032 | ||
0f459d16 | 3033 | /* Generate a debug exception if a watchpoint has been hit. */ |
b4051334 | 3034 | static void check_watchpoint(int offset, int len_mask, int flags) |
0f459d16 | 3035 | { |
9349b4f9 | 3036 | CPUArchState *env = cpu_single_env; |
06d55cc1 AL |
3037 | target_ulong pc, cs_base; |
3038 | TranslationBlock *tb; | |
0f459d16 | 3039 | target_ulong vaddr; |
a1d1bb31 | 3040 | CPUWatchpoint *wp; |
06d55cc1 | 3041 | int cpu_flags; |
0f459d16 | 3042 | |
06d55cc1 AL |
3043 | if (env->watchpoint_hit) { |
3044 | /* We re-entered the check after replacing the TB. Now raise | |
3045 | * the debug interrupt so that is will trigger after the | |
3046 | * current instruction. */ | |
3047 | cpu_interrupt(env, CPU_INTERRUPT_DEBUG); | |
3048 | return; | |
3049 | } | |
2e70f6ef | 3050 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
72cf2d4f | 3051 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 AL |
3052 | if ((vaddr == (wp->vaddr & len_mask) || |
3053 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { | |
6e140f28 AL |
3054 | wp->flags |= BP_WATCHPOINT_HIT; |
3055 | if (!env->watchpoint_hit) { | |
3056 | env->watchpoint_hit = wp; | |
3057 | tb = tb_find_pc(env->mem_io_pc); | |
3058 | if (!tb) { | |
3059 | cpu_abort(env, "check_watchpoint: could not find TB for " | |
3060 | "pc=%p", (void *)env->mem_io_pc); | |
3061 | } | |
618ba8e6 | 3062 | cpu_restore_state(tb, env, env->mem_io_pc); |
6e140f28 AL |
3063 | tb_phys_invalidate(tb, -1); |
3064 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { | |
3065 | env->exception_index = EXCP_DEBUG; | |
488d6577 | 3066 | cpu_loop_exit(env); |
6e140f28 AL |
3067 | } else { |
3068 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); | |
3069 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); | |
488d6577 | 3070 | cpu_resume_from_signal(env, NULL); |
6e140f28 | 3071 | } |
06d55cc1 | 3072 | } |
6e140f28 AL |
3073 | } else { |
3074 | wp->flags &= ~BP_WATCHPOINT_HIT; | |
0f459d16 PB |
3075 | } |
3076 | } | |
3077 | } | |
3078 | ||
6658ffb8 PB |
3079 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
3080 | so these check for a hit then pass through to the normal out-of-line | |
3081 | phys routines. */ | |
1ec9b909 AK |
3082 | static uint64_t watch_mem_read(void *opaque, target_phys_addr_t addr, |
3083 | unsigned size) | |
6658ffb8 | 3084 | { |
1ec9b909 AK |
3085 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_READ); |
3086 | switch (size) { | |
3087 | case 1: return ldub_phys(addr); | |
3088 | case 2: return lduw_phys(addr); | |
3089 | case 4: return ldl_phys(addr); | |
3090 | default: abort(); | |
3091 | } | |
6658ffb8 PB |
3092 | } |
3093 | ||
1ec9b909 AK |
3094 | static void watch_mem_write(void *opaque, target_phys_addr_t addr, |
3095 | uint64_t val, unsigned size) | |
6658ffb8 | 3096 | { |
1ec9b909 AK |
3097 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_WRITE); |
3098 | switch (size) { | |
67364150 MF |
3099 | case 1: |
3100 | stb_phys(addr, val); | |
3101 | break; | |
3102 | case 2: | |
3103 | stw_phys(addr, val); | |
3104 | break; | |
3105 | case 4: | |
3106 | stl_phys(addr, val); | |
3107 | break; | |
1ec9b909 AK |
3108 | default: abort(); |
3109 | } | |
6658ffb8 PB |
3110 | } |
3111 | ||
1ec9b909 AK |
3112 | static const MemoryRegionOps watch_mem_ops = { |
3113 | .read = watch_mem_read, | |
3114 | .write = watch_mem_write, | |
3115 | .endianness = DEVICE_NATIVE_ENDIAN, | |
6658ffb8 | 3116 | }; |
6658ffb8 | 3117 | |
70c68e44 AK |
3118 | static uint64_t subpage_read(void *opaque, target_phys_addr_t addr, |
3119 | unsigned len) | |
db7b5426 | 3120 | { |
70c68e44 | 3121 | subpage_t *mmio = opaque; |
f6405247 | 3122 | unsigned int idx = SUBPAGE_IDX(addr); |
5312bd8b | 3123 | MemoryRegionSection *section; |
db7b5426 BS |
3124 | #if defined(DEBUG_SUBPAGE) |
3125 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__, | |
3126 | mmio, len, addr, idx); | |
3127 | #endif | |
db7b5426 | 3128 | |
5312bd8b AK |
3129 | section = &phys_sections[mmio->sub_section[idx]]; |
3130 | addr += mmio->base; | |
3131 | addr -= section->offset_within_address_space; | |
3132 | addr += section->offset_within_region; | |
37ec01d4 | 3133 | return io_mem_read(section->mr, addr, len); |
db7b5426 BS |
3134 | } |
3135 | ||
70c68e44 AK |
3136 | static void subpage_write(void *opaque, target_phys_addr_t addr, |
3137 | uint64_t value, unsigned len) | |
db7b5426 | 3138 | { |
70c68e44 | 3139 | subpage_t *mmio = opaque; |
f6405247 | 3140 | unsigned int idx = SUBPAGE_IDX(addr); |
5312bd8b | 3141 | MemoryRegionSection *section; |
db7b5426 | 3142 | #if defined(DEBUG_SUBPAGE) |
70c68e44 AK |
3143 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx |
3144 | " idx %d value %"PRIx64"\n", | |
f6405247 | 3145 | __func__, mmio, len, addr, idx, value); |
db7b5426 | 3146 | #endif |
f6405247 | 3147 | |
5312bd8b AK |
3148 | section = &phys_sections[mmio->sub_section[idx]]; |
3149 | addr += mmio->base; | |
3150 | addr -= section->offset_within_address_space; | |
3151 | addr += section->offset_within_region; | |
37ec01d4 | 3152 | io_mem_write(section->mr, addr, value, len); |
db7b5426 BS |
3153 | } |
3154 | ||
70c68e44 AK |
3155 | static const MemoryRegionOps subpage_ops = { |
3156 | .read = subpage_read, | |
3157 | .write = subpage_write, | |
3158 | .endianness = DEVICE_NATIVE_ENDIAN, | |
db7b5426 BS |
3159 | }; |
3160 | ||
de712f94 AK |
3161 | static uint64_t subpage_ram_read(void *opaque, target_phys_addr_t addr, |
3162 | unsigned size) | |
56384e8b AF |
3163 | { |
3164 | ram_addr_t raddr = addr; | |
3165 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
3166 | switch (size) { |
3167 | case 1: return ldub_p(ptr); | |
3168 | case 2: return lduw_p(ptr); | |
3169 | case 4: return ldl_p(ptr); | |
3170 | default: abort(); | |
3171 | } | |
56384e8b AF |
3172 | } |
3173 | ||
de712f94 AK |
3174 | static void subpage_ram_write(void *opaque, target_phys_addr_t addr, |
3175 | uint64_t value, unsigned size) | |
56384e8b AF |
3176 | { |
3177 | ram_addr_t raddr = addr; | |
3178 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
3179 | switch (size) { |
3180 | case 1: return stb_p(ptr, value); | |
3181 | case 2: return stw_p(ptr, value); | |
3182 | case 4: return stl_p(ptr, value); | |
3183 | default: abort(); | |
3184 | } | |
56384e8b AF |
3185 | } |
3186 | ||
de712f94 AK |
3187 | static const MemoryRegionOps subpage_ram_ops = { |
3188 | .read = subpage_ram_read, | |
3189 | .write = subpage_ram_write, | |
3190 | .endianness = DEVICE_NATIVE_ENDIAN, | |
56384e8b AF |
3191 | }; |
3192 | ||
c227f099 | 3193 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 3194 | uint16_t section) |
db7b5426 BS |
3195 | { |
3196 | int idx, eidx; | |
3197 | ||
3198 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) | |
3199 | return -1; | |
3200 | idx = SUBPAGE_IDX(start); | |
3201 | eidx = SUBPAGE_IDX(end); | |
3202 | #if defined(DEBUG_SUBPAGE) | |
0bf9e31a | 3203 | printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, |
db7b5426 BS |
3204 | mmio, start, end, idx, eidx, memory); |
3205 | #endif | |
5312bd8b AK |
3206 | if (memory_region_is_ram(phys_sections[section].mr)) { |
3207 | MemoryRegionSection new_section = phys_sections[section]; | |
3208 | new_section.mr = &io_mem_subpage_ram; | |
3209 | section = phys_section_add(&new_section); | |
56384e8b | 3210 | } |
db7b5426 | 3211 | for (; idx <= eidx; idx++) { |
5312bd8b | 3212 | mmio->sub_section[idx] = section; |
db7b5426 BS |
3213 | } |
3214 | ||
3215 | return 0; | |
3216 | } | |
3217 | ||
0f0cb164 | 3218 | static subpage_t *subpage_init(target_phys_addr_t base) |
db7b5426 | 3219 | { |
c227f099 | 3220 | subpage_t *mmio; |
db7b5426 | 3221 | |
7267c094 | 3222 | mmio = g_malloc0(sizeof(subpage_t)); |
1eec614b AL |
3223 | |
3224 | mmio->base = base; | |
70c68e44 AK |
3225 | memory_region_init_io(&mmio->iomem, &subpage_ops, mmio, |
3226 | "subpage", TARGET_PAGE_SIZE); | |
b3b00c78 | 3227 | mmio->iomem.subpage = true; |
db7b5426 | 3228 | #if defined(DEBUG_SUBPAGE) |
1eec614b AL |
3229 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
3230 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); | |
db7b5426 | 3231 | #endif |
0f0cb164 | 3232 | subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, phys_section_unassigned); |
db7b5426 BS |
3233 | |
3234 | return mmio; | |
3235 | } | |
3236 | ||
5312bd8b AK |
3237 | static uint16_t dummy_section(MemoryRegion *mr) |
3238 | { | |
3239 | MemoryRegionSection section = { | |
3240 | .mr = mr, | |
3241 | .offset_within_address_space = 0, | |
3242 | .offset_within_region = 0, | |
3243 | .size = UINT64_MAX, | |
3244 | }; | |
3245 | ||
3246 | return phys_section_add(§ion); | |
3247 | } | |
3248 | ||
37ec01d4 | 3249 | MemoryRegion *iotlb_to_region(target_phys_addr_t index) |
aa102231 | 3250 | { |
37ec01d4 | 3251 | return phys_sections[index & ~TARGET_PAGE_MASK].mr; |
aa102231 AK |
3252 | } |
3253 | ||
e9179ce1 AK |
3254 | static void io_mem_init(void) |
3255 | { | |
0e0df1e2 | 3256 | memory_region_init_io(&io_mem_ram, &error_mem_ops, NULL, "ram", UINT64_MAX); |
0e0df1e2 AK |
3257 | memory_region_init_io(&io_mem_rom, &rom_mem_ops, NULL, "rom", UINT64_MAX); |
3258 | memory_region_init_io(&io_mem_unassigned, &unassigned_mem_ops, NULL, | |
3259 | "unassigned", UINT64_MAX); | |
3260 | memory_region_init_io(&io_mem_notdirty, ¬dirty_mem_ops, NULL, | |
3261 | "notdirty", UINT64_MAX); | |
de712f94 AK |
3262 | memory_region_init_io(&io_mem_subpage_ram, &subpage_ram_ops, NULL, |
3263 | "subpage-ram", UINT64_MAX); | |
1ec9b909 AK |
3264 | memory_region_init_io(&io_mem_watch, &watch_mem_ops, NULL, |
3265 | "watch", UINT64_MAX); | |
e9179ce1 AK |
3266 | } |
3267 | ||
50c1e149 AK |
3268 | static void core_begin(MemoryListener *listener) |
3269 | { | |
54688b1e | 3270 | destroy_all_mappings(); |
5312bd8b | 3271 | phys_sections_clear(); |
c19e8800 | 3272 | phys_map.ptr = PHYS_MAP_NODE_NIL; |
5312bd8b | 3273 | phys_section_unassigned = dummy_section(&io_mem_unassigned); |
aa102231 AK |
3274 | phys_section_notdirty = dummy_section(&io_mem_notdirty); |
3275 | phys_section_rom = dummy_section(&io_mem_rom); | |
3276 | phys_section_watch = dummy_section(&io_mem_watch); | |
50c1e149 AK |
3277 | } |
3278 | ||
3279 | static void core_commit(MemoryListener *listener) | |
3280 | { | |
9349b4f9 | 3281 | CPUArchState *env; |
117712c3 AK |
3282 | |
3283 | /* since each CPU stores ram addresses in its TLB cache, we must | |
3284 | reset the modified entries */ | |
3285 | /* XXX: slow ! */ | |
3286 | for(env = first_cpu; env != NULL; env = env->next_cpu) { | |
3287 | tlb_flush(env, 1); | |
3288 | } | |
50c1e149 AK |
3289 | } |
3290 | ||
93632747 AK |
3291 | static void core_region_add(MemoryListener *listener, |
3292 | MemoryRegionSection *section) | |
3293 | { | |
4855d41a | 3294 | cpu_register_physical_memory_log(section, section->readonly); |
93632747 AK |
3295 | } |
3296 | ||
3297 | static void core_region_del(MemoryListener *listener, | |
3298 | MemoryRegionSection *section) | |
3299 | { | |
93632747 AK |
3300 | } |
3301 | ||
50c1e149 AK |
3302 | static void core_region_nop(MemoryListener *listener, |
3303 | MemoryRegionSection *section) | |
3304 | { | |
54688b1e | 3305 | cpu_register_physical_memory_log(section, section->readonly); |
50c1e149 AK |
3306 | } |
3307 | ||
93632747 AK |
3308 | static void core_log_start(MemoryListener *listener, |
3309 | MemoryRegionSection *section) | |
3310 | { | |
3311 | } | |
3312 | ||
3313 | static void core_log_stop(MemoryListener *listener, | |
3314 | MemoryRegionSection *section) | |
3315 | { | |
3316 | } | |
3317 | ||
3318 | static void core_log_sync(MemoryListener *listener, | |
3319 | MemoryRegionSection *section) | |
3320 | { | |
3321 | } | |
3322 | ||
3323 | static void core_log_global_start(MemoryListener *listener) | |
3324 | { | |
3325 | cpu_physical_memory_set_dirty_tracking(1); | |
3326 | } | |
3327 | ||
3328 | static void core_log_global_stop(MemoryListener *listener) | |
3329 | { | |
3330 | cpu_physical_memory_set_dirty_tracking(0); | |
3331 | } | |
3332 | ||
3333 | static void core_eventfd_add(MemoryListener *listener, | |
3334 | MemoryRegionSection *section, | |
3335 | bool match_data, uint64_t data, int fd) | |
3336 | { | |
3337 | } | |
3338 | ||
3339 | static void core_eventfd_del(MemoryListener *listener, | |
3340 | MemoryRegionSection *section, | |
3341 | bool match_data, uint64_t data, int fd) | |
3342 | { | |
3343 | } | |
3344 | ||
50c1e149 AK |
3345 | static void io_begin(MemoryListener *listener) |
3346 | { | |
3347 | } | |
3348 | ||
3349 | static void io_commit(MemoryListener *listener) | |
3350 | { | |
3351 | } | |
3352 | ||
4855d41a AK |
3353 | static void io_region_add(MemoryListener *listener, |
3354 | MemoryRegionSection *section) | |
3355 | { | |
a2d33521 AK |
3356 | MemoryRegionIORange *mrio = g_new(MemoryRegionIORange, 1); |
3357 | ||
3358 | mrio->mr = section->mr; | |
3359 | mrio->offset = section->offset_within_region; | |
3360 | iorange_init(&mrio->iorange, &memory_region_iorange_ops, | |
4855d41a | 3361 | section->offset_within_address_space, section->size); |
a2d33521 | 3362 | ioport_register(&mrio->iorange); |
4855d41a AK |
3363 | } |
3364 | ||
3365 | static void io_region_del(MemoryListener *listener, | |
3366 | MemoryRegionSection *section) | |
3367 | { | |
3368 | isa_unassign_ioport(section->offset_within_address_space, section->size); | |
3369 | } | |
3370 | ||
50c1e149 AK |
3371 | static void io_region_nop(MemoryListener *listener, |
3372 | MemoryRegionSection *section) | |
3373 | { | |
3374 | } | |
3375 | ||
4855d41a AK |
3376 | static void io_log_start(MemoryListener *listener, |
3377 | MemoryRegionSection *section) | |
3378 | { | |
3379 | } | |
3380 | ||
3381 | static void io_log_stop(MemoryListener *listener, | |
3382 | MemoryRegionSection *section) | |
3383 | { | |
3384 | } | |
3385 | ||
3386 | static void io_log_sync(MemoryListener *listener, | |
3387 | MemoryRegionSection *section) | |
3388 | { | |
3389 | } | |
3390 | ||
3391 | static void io_log_global_start(MemoryListener *listener) | |
3392 | { | |
3393 | } | |
3394 | ||
3395 | static void io_log_global_stop(MemoryListener *listener) | |
3396 | { | |
3397 | } | |
3398 | ||
3399 | static void io_eventfd_add(MemoryListener *listener, | |
3400 | MemoryRegionSection *section, | |
3401 | bool match_data, uint64_t data, int fd) | |
3402 | { | |
3403 | } | |
3404 | ||
3405 | static void io_eventfd_del(MemoryListener *listener, | |
3406 | MemoryRegionSection *section, | |
3407 | bool match_data, uint64_t data, int fd) | |
3408 | { | |
3409 | } | |
3410 | ||
93632747 | 3411 | static MemoryListener core_memory_listener = { |
50c1e149 AK |
3412 | .begin = core_begin, |
3413 | .commit = core_commit, | |
93632747 AK |
3414 | .region_add = core_region_add, |
3415 | .region_del = core_region_del, | |
50c1e149 | 3416 | .region_nop = core_region_nop, |
93632747 AK |
3417 | .log_start = core_log_start, |
3418 | .log_stop = core_log_stop, | |
3419 | .log_sync = core_log_sync, | |
3420 | .log_global_start = core_log_global_start, | |
3421 | .log_global_stop = core_log_global_stop, | |
3422 | .eventfd_add = core_eventfd_add, | |
3423 | .eventfd_del = core_eventfd_del, | |
3424 | .priority = 0, | |
3425 | }; | |
3426 | ||
4855d41a | 3427 | static MemoryListener io_memory_listener = { |
50c1e149 AK |
3428 | .begin = io_begin, |
3429 | .commit = io_commit, | |
4855d41a AK |
3430 | .region_add = io_region_add, |
3431 | .region_del = io_region_del, | |
50c1e149 | 3432 | .region_nop = io_region_nop, |
4855d41a AK |
3433 | .log_start = io_log_start, |
3434 | .log_stop = io_log_stop, | |
3435 | .log_sync = io_log_sync, | |
3436 | .log_global_start = io_log_global_start, | |
3437 | .log_global_stop = io_log_global_stop, | |
3438 | .eventfd_add = io_eventfd_add, | |
3439 | .eventfd_del = io_eventfd_del, | |
3440 | .priority = 0, | |
3441 | }; | |
3442 | ||
62152b8a AK |
3443 | static void memory_map_init(void) |
3444 | { | |
7267c094 | 3445 | system_memory = g_malloc(sizeof(*system_memory)); |
8417cebf | 3446 | memory_region_init(system_memory, "system", INT64_MAX); |
62152b8a | 3447 | set_system_memory_map(system_memory); |
309cb471 | 3448 | |
7267c094 | 3449 | system_io = g_malloc(sizeof(*system_io)); |
309cb471 AK |
3450 | memory_region_init(system_io, "io", 65536); |
3451 | set_system_io_map(system_io); | |
93632747 | 3452 | |
4855d41a AK |
3453 | memory_listener_register(&core_memory_listener, system_memory); |
3454 | memory_listener_register(&io_memory_listener, system_io); | |
62152b8a AK |
3455 | } |
3456 | ||
3457 | MemoryRegion *get_system_memory(void) | |
3458 | { | |
3459 | return system_memory; | |
3460 | } | |
3461 | ||
309cb471 AK |
3462 | MemoryRegion *get_system_io(void) |
3463 | { | |
3464 | return system_io; | |
3465 | } | |
3466 | ||
e2eef170 PB |
3467 | #endif /* !defined(CONFIG_USER_ONLY) */ |
3468 | ||
13eb76e0 FB |
3469 | /* physical memory access (slow version, mainly for debug) */ |
3470 | #if defined(CONFIG_USER_ONLY) | |
9349b4f9 | 3471 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
a68fe89c | 3472 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
3473 | { |
3474 | int l, flags; | |
3475 | target_ulong page; | |
53a5960a | 3476 | void * p; |
13eb76e0 FB |
3477 | |
3478 | while (len > 0) { | |
3479 | page = addr & TARGET_PAGE_MASK; | |
3480 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3481 | if (l > len) | |
3482 | l = len; | |
3483 | flags = page_get_flags(page); | |
3484 | if (!(flags & PAGE_VALID)) | |
a68fe89c | 3485 | return -1; |
13eb76e0 FB |
3486 | if (is_write) { |
3487 | if (!(flags & PAGE_WRITE)) | |
a68fe89c | 3488 | return -1; |
579a97f7 | 3489 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 3490 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
a68fe89c | 3491 | return -1; |
72fb7daa AJ |
3492 | memcpy(p, buf, l); |
3493 | unlock_user(p, addr, l); | |
13eb76e0 FB |
3494 | } else { |
3495 | if (!(flags & PAGE_READ)) | |
a68fe89c | 3496 | return -1; |
579a97f7 | 3497 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 3498 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
a68fe89c | 3499 | return -1; |
72fb7daa | 3500 | memcpy(buf, p, l); |
5b257578 | 3501 | unlock_user(p, addr, 0); |
13eb76e0 FB |
3502 | } |
3503 | len -= l; | |
3504 | buf += l; | |
3505 | addr += l; | |
3506 | } | |
a68fe89c | 3507 | return 0; |
13eb76e0 | 3508 | } |
8df1cd07 | 3509 | |
13eb76e0 | 3510 | #else |
c227f099 | 3511 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
13eb76e0 FB |
3512 | int len, int is_write) |
3513 | { | |
37ec01d4 | 3514 | int l; |
13eb76e0 FB |
3515 | uint8_t *ptr; |
3516 | uint32_t val; | |
c227f099 | 3517 | target_phys_addr_t page; |
f3705d53 | 3518 | MemoryRegionSection *section; |
3b46e624 | 3519 | |
13eb76e0 FB |
3520 | while (len > 0) { |
3521 | page = addr & TARGET_PAGE_MASK; | |
3522 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3523 | if (l > len) | |
3524 | l = len; | |
06ef3525 | 3525 | section = phys_page_find(page >> TARGET_PAGE_BITS); |
3b46e624 | 3526 | |
13eb76e0 | 3527 | if (is_write) { |
f3705d53 | 3528 | if (!memory_region_is_ram(section->mr)) { |
f1f6e3b8 | 3529 | target_phys_addr_t addr1; |
cc5bea60 | 3530 | addr1 = memory_region_section_addr(section, addr); |
6a00d601 FB |
3531 | /* XXX: could force cpu_single_env to NULL to avoid |
3532 | potential bugs */ | |
6c2934db | 3533 | if (l >= 4 && ((addr1 & 3) == 0)) { |
1c213d19 | 3534 | /* 32 bit write access */ |
c27004ec | 3535 | val = ldl_p(buf); |
37ec01d4 | 3536 | io_mem_write(section->mr, addr1, val, 4); |
13eb76e0 | 3537 | l = 4; |
6c2934db | 3538 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
1c213d19 | 3539 | /* 16 bit write access */ |
c27004ec | 3540 | val = lduw_p(buf); |
37ec01d4 | 3541 | io_mem_write(section->mr, addr1, val, 2); |
13eb76e0 FB |
3542 | l = 2; |
3543 | } else { | |
1c213d19 | 3544 | /* 8 bit write access */ |
c27004ec | 3545 | val = ldub_p(buf); |
37ec01d4 | 3546 | io_mem_write(section->mr, addr1, val, 1); |
13eb76e0 FB |
3547 | l = 1; |
3548 | } | |
f3705d53 | 3549 | } else if (!section->readonly) { |
8ca5692d | 3550 | ram_addr_t addr1; |
f3705d53 | 3551 | addr1 = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 3552 | + memory_region_section_addr(section, addr); |
13eb76e0 | 3553 | /* RAM case */ |
5579c7f3 | 3554 | ptr = qemu_get_ram_ptr(addr1); |
13eb76e0 | 3555 | memcpy(ptr, buf, l); |
3a7d929e FB |
3556 | if (!cpu_physical_memory_is_dirty(addr1)) { |
3557 | /* invalidate code */ | |
3558 | tb_invalidate_phys_page_range(addr1, addr1 + l, 0); | |
3559 | /* set dirty bit */ | |
f7c11b53 YT |
3560 | cpu_physical_memory_set_dirty_flags( |
3561 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
3a7d929e | 3562 | } |
050a0ddf | 3563 | qemu_put_ram_ptr(ptr); |
13eb76e0 FB |
3564 | } |
3565 | } else { | |
cc5bea60 BS |
3566 | if (!(memory_region_is_ram(section->mr) || |
3567 | memory_region_is_romd(section->mr))) { | |
f1f6e3b8 | 3568 | target_phys_addr_t addr1; |
13eb76e0 | 3569 | /* I/O case */ |
cc5bea60 | 3570 | addr1 = memory_region_section_addr(section, addr); |
6c2934db | 3571 | if (l >= 4 && ((addr1 & 3) == 0)) { |
13eb76e0 | 3572 | /* 32 bit read access */ |
37ec01d4 | 3573 | val = io_mem_read(section->mr, addr1, 4); |
c27004ec | 3574 | stl_p(buf, val); |
13eb76e0 | 3575 | l = 4; |
6c2934db | 3576 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
13eb76e0 | 3577 | /* 16 bit read access */ |
37ec01d4 | 3578 | val = io_mem_read(section->mr, addr1, 2); |
c27004ec | 3579 | stw_p(buf, val); |
13eb76e0 FB |
3580 | l = 2; |
3581 | } else { | |
1c213d19 | 3582 | /* 8 bit read access */ |
37ec01d4 | 3583 | val = io_mem_read(section->mr, addr1, 1); |
c27004ec | 3584 | stb_p(buf, val); |
13eb76e0 FB |
3585 | l = 1; |
3586 | } | |
3587 | } else { | |
3588 | /* RAM case */ | |
0a1b357f | 3589 | ptr = qemu_get_ram_ptr(section->mr->ram_addr |
cc5bea60 BS |
3590 | + memory_region_section_addr(section, |
3591 | addr)); | |
f3705d53 | 3592 | memcpy(buf, ptr, l); |
050a0ddf | 3593 | qemu_put_ram_ptr(ptr); |
13eb76e0 FB |
3594 | } |
3595 | } | |
3596 | len -= l; | |
3597 | buf += l; | |
3598 | addr += l; | |
3599 | } | |
3600 | } | |
8df1cd07 | 3601 | |
d0ecd2aa | 3602 | /* used for ROM loading : can write in RAM and ROM */ |
c227f099 | 3603 | void cpu_physical_memory_write_rom(target_phys_addr_t addr, |
d0ecd2aa FB |
3604 | const uint8_t *buf, int len) |
3605 | { | |
3606 | int l; | |
3607 | uint8_t *ptr; | |
c227f099 | 3608 | target_phys_addr_t page; |
f3705d53 | 3609 | MemoryRegionSection *section; |
3b46e624 | 3610 | |
d0ecd2aa FB |
3611 | while (len > 0) { |
3612 | page = addr & TARGET_PAGE_MASK; | |
3613 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3614 | if (l > len) | |
3615 | l = len; | |
06ef3525 | 3616 | section = phys_page_find(page >> TARGET_PAGE_BITS); |
3b46e624 | 3617 | |
cc5bea60 BS |
3618 | if (!(memory_region_is_ram(section->mr) || |
3619 | memory_region_is_romd(section->mr))) { | |
d0ecd2aa FB |
3620 | /* do nothing */ |
3621 | } else { | |
3622 | unsigned long addr1; | |
f3705d53 | 3623 | addr1 = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 3624 | + memory_region_section_addr(section, addr); |
d0ecd2aa | 3625 | /* ROM/RAM case */ |
5579c7f3 | 3626 | ptr = qemu_get_ram_ptr(addr1); |
d0ecd2aa | 3627 | memcpy(ptr, buf, l); |
050a0ddf | 3628 | qemu_put_ram_ptr(ptr); |
d0ecd2aa FB |
3629 | } |
3630 | len -= l; | |
3631 | buf += l; | |
3632 | addr += l; | |
3633 | } | |
3634 | } | |
3635 | ||
6d16c2f8 AL |
3636 | typedef struct { |
3637 | void *buffer; | |
c227f099 AL |
3638 | target_phys_addr_t addr; |
3639 | target_phys_addr_t len; | |
6d16c2f8 AL |
3640 | } BounceBuffer; |
3641 | ||
3642 | static BounceBuffer bounce; | |
3643 | ||
ba223c29 AL |
3644 | typedef struct MapClient { |
3645 | void *opaque; | |
3646 | void (*callback)(void *opaque); | |
72cf2d4f | 3647 | QLIST_ENTRY(MapClient) link; |
ba223c29 AL |
3648 | } MapClient; |
3649 | ||
72cf2d4f BS |
3650 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
3651 | = QLIST_HEAD_INITIALIZER(map_client_list); | |
ba223c29 AL |
3652 | |
3653 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) | |
3654 | { | |
7267c094 | 3655 | MapClient *client = g_malloc(sizeof(*client)); |
ba223c29 AL |
3656 | |
3657 | client->opaque = opaque; | |
3658 | client->callback = callback; | |
72cf2d4f | 3659 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
ba223c29 AL |
3660 | return client; |
3661 | } | |
3662 | ||
3663 | void cpu_unregister_map_client(void *_client) | |
3664 | { | |
3665 | MapClient *client = (MapClient *)_client; | |
3666 | ||
72cf2d4f | 3667 | QLIST_REMOVE(client, link); |
7267c094 | 3668 | g_free(client); |
ba223c29 AL |
3669 | } |
3670 | ||
3671 | static void cpu_notify_map_clients(void) | |
3672 | { | |
3673 | MapClient *client; | |
3674 | ||
72cf2d4f BS |
3675 | while (!QLIST_EMPTY(&map_client_list)) { |
3676 | client = QLIST_FIRST(&map_client_list); | |
ba223c29 | 3677 | client->callback(client->opaque); |
34d5e948 | 3678 | cpu_unregister_map_client(client); |
ba223c29 AL |
3679 | } |
3680 | } | |
3681 | ||
6d16c2f8 AL |
3682 | /* Map a physical memory region into a host virtual address. |
3683 | * May map a subset of the requested range, given by and returned in *plen. | |
3684 | * May return NULL if resources needed to perform the mapping are exhausted. | |
3685 | * Use only for reads OR writes - not for read-modify-write operations. | |
ba223c29 AL |
3686 | * Use cpu_register_map_client() to know when retrying the map operation is |
3687 | * likely to succeed. | |
6d16c2f8 | 3688 | */ |
c227f099 AL |
3689 | void *cpu_physical_memory_map(target_phys_addr_t addr, |
3690 | target_phys_addr_t *plen, | |
6d16c2f8 AL |
3691 | int is_write) |
3692 | { | |
c227f099 | 3693 | target_phys_addr_t len = *plen; |
38bee5dc | 3694 | target_phys_addr_t todo = 0; |
6d16c2f8 | 3695 | int l; |
c227f099 | 3696 | target_phys_addr_t page; |
f3705d53 | 3697 | MemoryRegionSection *section; |
f15fbc4b | 3698 | ram_addr_t raddr = RAM_ADDR_MAX; |
8ab934f9 SS |
3699 | ram_addr_t rlen; |
3700 | void *ret; | |
6d16c2f8 AL |
3701 | |
3702 | while (len > 0) { | |
3703 | page = addr & TARGET_PAGE_MASK; | |
3704 | l = (page + TARGET_PAGE_SIZE) - addr; | |
3705 | if (l > len) | |
3706 | l = len; | |
06ef3525 | 3707 | section = phys_page_find(page >> TARGET_PAGE_BITS); |
6d16c2f8 | 3708 | |
f3705d53 | 3709 | if (!(memory_region_is_ram(section->mr) && !section->readonly)) { |
38bee5dc | 3710 | if (todo || bounce.buffer) { |
6d16c2f8 AL |
3711 | break; |
3712 | } | |
3713 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); | |
3714 | bounce.addr = addr; | |
3715 | bounce.len = l; | |
3716 | if (!is_write) { | |
54f7b4a3 | 3717 | cpu_physical_memory_read(addr, bounce.buffer, l); |
6d16c2f8 | 3718 | } |
38bee5dc SS |
3719 | |
3720 | *plen = l; | |
3721 | return bounce.buffer; | |
6d16c2f8 | 3722 | } |
8ab934f9 | 3723 | if (!todo) { |
f3705d53 | 3724 | raddr = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 3725 | + memory_region_section_addr(section, addr); |
8ab934f9 | 3726 | } |
6d16c2f8 AL |
3727 | |
3728 | len -= l; | |
3729 | addr += l; | |
38bee5dc | 3730 | todo += l; |
6d16c2f8 | 3731 | } |
8ab934f9 SS |
3732 | rlen = todo; |
3733 | ret = qemu_ram_ptr_length(raddr, &rlen); | |
3734 | *plen = rlen; | |
3735 | return ret; | |
6d16c2f8 AL |
3736 | } |
3737 | ||
3738 | /* Unmaps a memory region previously mapped by cpu_physical_memory_map(). | |
3739 | * Will also mark the memory as dirty if is_write == 1. access_len gives | |
3740 | * the amount of memory that was actually read or written by the caller. | |
3741 | */ | |
c227f099 AL |
3742 | void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, |
3743 | int is_write, target_phys_addr_t access_len) | |
6d16c2f8 AL |
3744 | { |
3745 | if (buffer != bounce.buffer) { | |
3746 | if (is_write) { | |
e890261f | 3747 | ram_addr_t addr1 = qemu_ram_addr_from_host_nofail(buffer); |
6d16c2f8 AL |
3748 | while (access_len) { |
3749 | unsigned l; | |
3750 | l = TARGET_PAGE_SIZE; | |
3751 | if (l > access_len) | |
3752 | l = access_len; | |
3753 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
3754 | /* invalidate code */ | |
3755 | tb_invalidate_phys_page_range(addr1, addr1 + l, 0); | |
3756 | /* set dirty bit */ | |
f7c11b53 YT |
3757 | cpu_physical_memory_set_dirty_flags( |
3758 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
6d16c2f8 AL |
3759 | } |
3760 | addr1 += l; | |
3761 | access_len -= l; | |
3762 | } | |
3763 | } | |
868bb33f | 3764 | if (xen_enabled()) { |
e41d7c69 | 3765 | xen_invalidate_map_cache_entry(buffer); |
050a0ddf | 3766 | } |
6d16c2f8 AL |
3767 | return; |
3768 | } | |
3769 | if (is_write) { | |
3770 | cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len); | |
3771 | } | |
f8a83245 | 3772 | qemu_vfree(bounce.buffer); |
6d16c2f8 | 3773 | bounce.buffer = NULL; |
ba223c29 | 3774 | cpu_notify_map_clients(); |
6d16c2f8 | 3775 | } |
d0ecd2aa | 3776 | |
8df1cd07 | 3777 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
3778 | static inline uint32_t ldl_phys_internal(target_phys_addr_t addr, |
3779 | enum device_endian endian) | |
8df1cd07 | 3780 | { |
8df1cd07 FB |
3781 | uint8_t *ptr; |
3782 | uint32_t val; | |
f3705d53 | 3783 | MemoryRegionSection *section; |
8df1cd07 | 3784 | |
06ef3525 | 3785 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
3b46e624 | 3786 | |
cc5bea60 BS |
3787 | if (!(memory_region_is_ram(section->mr) || |
3788 | memory_region_is_romd(section->mr))) { | |
8df1cd07 | 3789 | /* I/O case */ |
cc5bea60 | 3790 | addr = memory_region_section_addr(section, addr); |
37ec01d4 | 3791 | val = io_mem_read(section->mr, addr, 4); |
1e78bcc1 AG |
3792 | #if defined(TARGET_WORDS_BIGENDIAN) |
3793 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
3794 | val = bswap32(val); | |
3795 | } | |
3796 | #else | |
3797 | if (endian == DEVICE_BIG_ENDIAN) { | |
3798 | val = bswap32(val); | |
3799 | } | |
3800 | #endif | |
8df1cd07 FB |
3801 | } else { |
3802 | /* RAM case */ | |
f3705d53 | 3803 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 3804 | & TARGET_PAGE_MASK) |
cc5bea60 | 3805 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
3806 | switch (endian) { |
3807 | case DEVICE_LITTLE_ENDIAN: | |
3808 | val = ldl_le_p(ptr); | |
3809 | break; | |
3810 | case DEVICE_BIG_ENDIAN: | |
3811 | val = ldl_be_p(ptr); | |
3812 | break; | |
3813 | default: | |
3814 | val = ldl_p(ptr); | |
3815 | break; | |
3816 | } | |
8df1cd07 FB |
3817 | } |
3818 | return val; | |
3819 | } | |
3820 | ||
1e78bcc1 AG |
3821 | uint32_t ldl_phys(target_phys_addr_t addr) |
3822 | { | |
3823 | return ldl_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3824 | } | |
3825 | ||
3826 | uint32_t ldl_le_phys(target_phys_addr_t addr) | |
3827 | { | |
3828 | return ldl_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3829 | } | |
3830 | ||
3831 | uint32_t ldl_be_phys(target_phys_addr_t addr) | |
3832 | { | |
3833 | return ldl_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3834 | } | |
3835 | ||
84b7b8e7 | 3836 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
3837 | static inline uint64_t ldq_phys_internal(target_phys_addr_t addr, |
3838 | enum device_endian endian) | |
84b7b8e7 | 3839 | { |
84b7b8e7 FB |
3840 | uint8_t *ptr; |
3841 | uint64_t val; | |
f3705d53 | 3842 | MemoryRegionSection *section; |
84b7b8e7 | 3843 | |
06ef3525 | 3844 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
3b46e624 | 3845 | |
cc5bea60 BS |
3846 | if (!(memory_region_is_ram(section->mr) || |
3847 | memory_region_is_romd(section->mr))) { | |
84b7b8e7 | 3848 | /* I/O case */ |
cc5bea60 | 3849 | addr = memory_region_section_addr(section, addr); |
1e78bcc1 AG |
3850 | |
3851 | /* XXX This is broken when device endian != cpu endian. | |
3852 | Fix and add "endian" variable check */ | |
84b7b8e7 | 3853 | #ifdef TARGET_WORDS_BIGENDIAN |
37ec01d4 AK |
3854 | val = io_mem_read(section->mr, addr, 4) << 32; |
3855 | val |= io_mem_read(section->mr, addr + 4, 4); | |
84b7b8e7 | 3856 | #else |
37ec01d4 AK |
3857 | val = io_mem_read(section->mr, addr, 4); |
3858 | val |= io_mem_read(section->mr, addr + 4, 4) << 32; | |
84b7b8e7 FB |
3859 | #endif |
3860 | } else { | |
3861 | /* RAM case */ | |
f3705d53 | 3862 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 3863 | & TARGET_PAGE_MASK) |
cc5bea60 | 3864 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
3865 | switch (endian) { |
3866 | case DEVICE_LITTLE_ENDIAN: | |
3867 | val = ldq_le_p(ptr); | |
3868 | break; | |
3869 | case DEVICE_BIG_ENDIAN: | |
3870 | val = ldq_be_p(ptr); | |
3871 | break; | |
3872 | default: | |
3873 | val = ldq_p(ptr); | |
3874 | break; | |
3875 | } | |
84b7b8e7 FB |
3876 | } |
3877 | return val; | |
3878 | } | |
3879 | ||
1e78bcc1 AG |
3880 | uint64_t ldq_phys(target_phys_addr_t addr) |
3881 | { | |
3882 | return ldq_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3883 | } | |
3884 | ||
3885 | uint64_t ldq_le_phys(target_phys_addr_t addr) | |
3886 | { | |
3887 | return ldq_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3888 | } | |
3889 | ||
3890 | uint64_t ldq_be_phys(target_phys_addr_t addr) | |
3891 | { | |
3892 | return ldq_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3893 | } | |
3894 | ||
aab33094 | 3895 | /* XXX: optimize */ |
c227f099 | 3896 | uint32_t ldub_phys(target_phys_addr_t addr) |
aab33094 FB |
3897 | { |
3898 | uint8_t val; | |
3899 | cpu_physical_memory_read(addr, &val, 1); | |
3900 | return val; | |
3901 | } | |
3902 | ||
733f0b02 | 3903 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
3904 | static inline uint32_t lduw_phys_internal(target_phys_addr_t addr, |
3905 | enum device_endian endian) | |
aab33094 | 3906 | { |
733f0b02 MT |
3907 | uint8_t *ptr; |
3908 | uint64_t val; | |
f3705d53 | 3909 | MemoryRegionSection *section; |
733f0b02 | 3910 | |
06ef3525 | 3911 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
733f0b02 | 3912 | |
cc5bea60 BS |
3913 | if (!(memory_region_is_ram(section->mr) || |
3914 | memory_region_is_romd(section->mr))) { | |
733f0b02 | 3915 | /* I/O case */ |
cc5bea60 | 3916 | addr = memory_region_section_addr(section, addr); |
37ec01d4 | 3917 | val = io_mem_read(section->mr, addr, 2); |
1e78bcc1 AG |
3918 | #if defined(TARGET_WORDS_BIGENDIAN) |
3919 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
3920 | val = bswap16(val); | |
3921 | } | |
3922 | #else | |
3923 | if (endian == DEVICE_BIG_ENDIAN) { | |
3924 | val = bswap16(val); | |
3925 | } | |
3926 | #endif | |
733f0b02 MT |
3927 | } else { |
3928 | /* RAM case */ | |
f3705d53 | 3929 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 3930 | & TARGET_PAGE_MASK) |
cc5bea60 | 3931 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
3932 | switch (endian) { |
3933 | case DEVICE_LITTLE_ENDIAN: | |
3934 | val = lduw_le_p(ptr); | |
3935 | break; | |
3936 | case DEVICE_BIG_ENDIAN: | |
3937 | val = lduw_be_p(ptr); | |
3938 | break; | |
3939 | default: | |
3940 | val = lduw_p(ptr); | |
3941 | break; | |
3942 | } | |
733f0b02 MT |
3943 | } |
3944 | return val; | |
aab33094 FB |
3945 | } |
3946 | ||
1e78bcc1 AG |
3947 | uint32_t lduw_phys(target_phys_addr_t addr) |
3948 | { | |
3949 | return lduw_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
3950 | } | |
3951 | ||
3952 | uint32_t lduw_le_phys(target_phys_addr_t addr) | |
3953 | { | |
3954 | return lduw_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
3955 | } | |
3956 | ||
3957 | uint32_t lduw_be_phys(target_phys_addr_t addr) | |
3958 | { | |
3959 | return lduw_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
3960 | } | |
3961 | ||
8df1cd07 FB |
3962 | /* warning: addr must be aligned. The ram page is not masked as dirty |
3963 | and the code inside is not invalidated. It is useful if the dirty | |
3964 | bits are used to track modified PTEs */ | |
c227f099 | 3965 | void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val) |
8df1cd07 | 3966 | { |
8df1cd07 | 3967 | uint8_t *ptr; |
f3705d53 | 3968 | MemoryRegionSection *section; |
8df1cd07 | 3969 | |
06ef3525 | 3970 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
3b46e624 | 3971 | |
f3705d53 | 3972 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 3973 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 3974 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 3975 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 3976 | } |
37ec01d4 | 3977 | io_mem_write(section->mr, addr, val, 4); |
8df1cd07 | 3978 | } else { |
f3705d53 | 3979 | unsigned long addr1 = (memory_region_get_ram_addr(section->mr) |
06ef3525 | 3980 | & TARGET_PAGE_MASK) |
cc5bea60 | 3981 | + memory_region_section_addr(section, addr); |
5579c7f3 | 3982 | ptr = qemu_get_ram_ptr(addr1); |
8df1cd07 | 3983 | stl_p(ptr, val); |
74576198 AL |
3984 | |
3985 | if (unlikely(in_migration)) { | |
3986 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
3987 | /* invalidate code */ | |
3988 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
3989 | /* set dirty bit */ | |
f7c11b53 YT |
3990 | cpu_physical_memory_set_dirty_flags( |
3991 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
74576198 AL |
3992 | } |
3993 | } | |
8df1cd07 FB |
3994 | } |
3995 | } | |
3996 | ||
c227f099 | 3997 | void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val) |
bc98a7ef | 3998 | { |
bc98a7ef | 3999 | uint8_t *ptr; |
f3705d53 | 4000 | MemoryRegionSection *section; |
bc98a7ef | 4001 | |
06ef3525 | 4002 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
3b46e624 | 4003 | |
f3705d53 | 4004 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 4005 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 4006 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 4007 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 4008 | } |
bc98a7ef | 4009 | #ifdef TARGET_WORDS_BIGENDIAN |
37ec01d4 AK |
4010 | io_mem_write(section->mr, addr, val >> 32, 4); |
4011 | io_mem_write(section->mr, addr + 4, (uint32_t)val, 4); | |
bc98a7ef | 4012 | #else |
37ec01d4 AK |
4013 | io_mem_write(section->mr, addr, (uint32_t)val, 4); |
4014 | io_mem_write(section->mr, addr + 4, val >> 32, 4); | |
bc98a7ef JM |
4015 | #endif |
4016 | } else { | |
f3705d53 | 4017 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 4018 | & TARGET_PAGE_MASK) |
cc5bea60 | 4019 | + memory_region_section_addr(section, addr)); |
bc98a7ef JM |
4020 | stq_p(ptr, val); |
4021 | } | |
4022 | } | |
4023 | ||
8df1cd07 | 4024 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
4025 | static inline void stl_phys_internal(target_phys_addr_t addr, uint32_t val, |
4026 | enum device_endian endian) | |
8df1cd07 | 4027 | { |
8df1cd07 | 4028 | uint8_t *ptr; |
f3705d53 | 4029 | MemoryRegionSection *section; |
8df1cd07 | 4030 | |
06ef3525 | 4031 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
3b46e624 | 4032 | |
f3705d53 | 4033 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 4034 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 4035 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 4036 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 4037 | } |
1e78bcc1 AG |
4038 | #if defined(TARGET_WORDS_BIGENDIAN) |
4039 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
4040 | val = bswap32(val); | |
4041 | } | |
4042 | #else | |
4043 | if (endian == DEVICE_BIG_ENDIAN) { | |
4044 | val = bswap32(val); | |
4045 | } | |
4046 | #endif | |
37ec01d4 | 4047 | io_mem_write(section->mr, addr, val, 4); |
8df1cd07 FB |
4048 | } else { |
4049 | unsigned long addr1; | |
f3705d53 | 4050 | addr1 = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 4051 | + memory_region_section_addr(section, addr); |
8df1cd07 | 4052 | /* RAM case */ |
5579c7f3 | 4053 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
4054 | switch (endian) { |
4055 | case DEVICE_LITTLE_ENDIAN: | |
4056 | stl_le_p(ptr, val); | |
4057 | break; | |
4058 | case DEVICE_BIG_ENDIAN: | |
4059 | stl_be_p(ptr, val); | |
4060 | break; | |
4061 | default: | |
4062 | stl_p(ptr, val); | |
4063 | break; | |
4064 | } | |
3a7d929e FB |
4065 | if (!cpu_physical_memory_is_dirty(addr1)) { |
4066 | /* invalidate code */ | |
4067 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
4068 | /* set dirty bit */ | |
f7c11b53 YT |
4069 | cpu_physical_memory_set_dirty_flags(addr1, |
4070 | (0xff & ~CODE_DIRTY_FLAG)); | |
3a7d929e | 4071 | } |
8df1cd07 FB |
4072 | } |
4073 | } | |
4074 | ||
1e78bcc1 AG |
4075 | void stl_phys(target_phys_addr_t addr, uint32_t val) |
4076 | { | |
4077 | stl_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
4078 | } | |
4079 | ||
4080 | void stl_le_phys(target_phys_addr_t addr, uint32_t val) | |
4081 | { | |
4082 | stl_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
4083 | } | |
4084 | ||
4085 | void stl_be_phys(target_phys_addr_t addr, uint32_t val) | |
4086 | { | |
4087 | stl_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
4088 | } | |
4089 | ||
aab33094 | 4090 | /* XXX: optimize */ |
c227f099 | 4091 | void stb_phys(target_phys_addr_t addr, uint32_t val) |
aab33094 FB |
4092 | { |
4093 | uint8_t v = val; | |
4094 | cpu_physical_memory_write(addr, &v, 1); | |
4095 | } | |
4096 | ||
733f0b02 | 4097 | /* warning: addr must be aligned */ |
1e78bcc1 AG |
4098 | static inline void stw_phys_internal(target_phys_addr_t addr, uint32_t val, |
4099 | enum device_endian endian) | |
aab33094 | 4100 | { |
733f0b02 | 4101 | uint8_t *ptr; |
f3705d53 | 4102 | MemoryRegionSection *section; |
733f0b02 | 4103 | |
06ef3525 | 4104 | section = phys_page_find(addr >> TARGET_PAGE_BITS); |
733f0b02 | 4105 | |
f3705d53 | 4106 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 4107 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 4108 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 4109 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 4110 | } |
1e78bcc1 AG |
4111 | #if defined(TARGET_WORDS_BIGENDIAN) |
4112 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
4113 | val = bswap16(val); | |
4114 | } | |
4115 | #else | |
4116 | if (endian == DEVICE_BIG_ENDIAN) { | |
4117 | val = bswap16(val); | |
4118 | } | |
4119 | #endif | |
37ec01d4 | 4120 | io_mem_write(section->mr, addr, val, 2); |
733f0b02 MT |
4121 | } else { |
4122 | unsigned long addr1; | |
f3705d53 | 4123 | addr1 = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 4124 | + memory_region_section_addr(section, addr); |
733f0b02 MT |
4125 | /* RAM case */ |
4126 | ptr = qemu_get_ram_ptr(addr1); | |
1e78bcc1 AG |
4127 | switch (endian) { |
4128 | case DEVICE_LITTLE_ENDIAN: | |
4129 | stw_le_p(ptr, val); | |
4130 | break; | |
4131 | case DEVICE_BIG_ENDIAN: | |
4132 | stw_be_p(ptr, val); | |
4133 | break; | |
4134 | default: | |
4135 | stw_p(ptr, val); | |
4136 | break; | |
4137 | } | |
733f0b02 MT |
4138 | if (!cpu_physical_memory_is_dirty(addr1)) { |
4139 | /* invalidate code */ | |
4140 | tb_invalidate_phys_page_range(addr1, addr1 + 2, 0); | |
4141 | /* set dirty bit */ | |
4142 | cpu_physical_memory_set_dirty_flags(addr1, | |
4143 | (0xff & ~CODE_DIRTY_FLAG)); | |
4144 | } | |
4145 | } | |
aab33094 FB |
4146 | } |
4147 | ||
1e78bcc1 AG |
4148 | void stw_phys(target_phys_addr_t addr, uint32_t val) |
4149 | { | |
4150 | stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
4151 | } | |
4152 | ||
4153 | void stw_le_phys(target_phys_addr_t addr, uint32_t val) | |
4154 | { | |
4155 | stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
4156 | } | |
4157 | ||
4158 | void stw_be_phys(target_phys_addr_t addr, uint32_t val) | |
4159 | { | |
4160 | stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
4161 | } | |
4162 | ||
aab33094 | 4163 | /* XXX: optimize */ |
c227f099 | 4164 | void stq_phys(target_phys_addr_t addr, uint64_t val) |
aab33094 FB |
4165 | { |
4166 | val = tswap64(val); | |
71d2b725 | 4167 | cpu_physical_memory_write(addr, &val, 8); |
aab33094 FB |
4168 | } |
4169 | ||
1e78bcc1 AG |
4170 | void stq_le_phys(target_phys_addr_t addr, uint64_t val) |
4171 | { | |
4172 | val = cpu_to_le64(val); | |
4173 | cpu_physical_memory_write(addr, &val, 8); | |
4174 | } | |
4175 | ||
4176 | void stq_be_phys(target_phys_addr_t addr, uint64_t val) | |
4177 | { | |
4178 | val = cpu_to_be64(val); | |
4179 | cpu_physical_memory_write(addr, &val, 8); | |
4180 | } | |
4181 | ||
5e2972fd | 4182 | /* virtual memory access for debug (includes writing to ROM) */ |
9349b4f9 | 4183 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
b448f2f3 | 4184 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
4185 | { |
4186 | int l; | |
c227f099 | 4187 | target_phys_addr_t phys_addr; |
9b3c35e0 | 4188 | target_ulong page; |
13eb76e0 FB |
4189 | |
4190 | while (len > 0) { | |
4191 | page = addr & TARGET_PAGE_MASK; | |
4192 | phys_addr = cpu_get_phys_page_debug(env, page); | |
4193 | /* if no physical page mapped, return an error */ | |
4194 | if (phys_addr == -1) | |
4195 | return -1; | |
4196 | l = (page + TARGET_PAGE_SIZE) - addr; | |
4197 | if (l > len) | |
4198 | l = len; | |
5e2972fd | 4199 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
5e2972fd AL |
4200 | if (is_write) |
4201 | cpu_physical_memory_write_rom(phys_addr, buf, l); | |
4202 | else | |
5e2972fd | 4203 | cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
13eb76e0 FB |
4204 | len -= l; |
4205 | buf += l; | |
4206 | addr += l; | |
4207 | } | |
4208 | return 0; | |
4209 | } | |
a68fe89c | 4210 | #endif |
13eb76e0 | 4211 | |
2e70f6ef PB |
4212 | /* in deterministic execution mode, instructions doing device I/Os |
4213 | must be at the end of the TB */ | |
20503968 | 4214 | void cpu_io_recompile(CPUArchState *env, uintptr_t retaddr) |
2e70f6ef PB |
4215 | { |
4216 | TranslationBlock *tb; | |
4217 | uint32_t n, cflags; | |
4218 | target_ulong pc, cs_base; | |
4219 | uint64_t flags; | |
4220 | ||
20503968 | 4221 | tb = tb_find_pc(retaddr); |
2e70f6ef PB |
4222 | if (!tb) { |
4223 | cpu_abort(env, "cpu_io_recompile: could not find TB for pc=%p", | |
20503968 | 4224 | (void *)retaddr); |
2e70f6ef PB |
4225 | } |
4226 | n = env->icount_decr.u16.low + tb->icount; | |
20503968 | 4227 | cpu_restore_state(tb, env, retaddr); |
2e70f6ef | 4228 | /* Calculate how many instructions had been executed before the fault |
bf20dc07 | 4229 | occurred. */ |
2e70f6ef PB |
4230 | n = n - env->icount_decr.u16.low; |
4231 | /* Generate a new TB ending on the I/O insn. */ | |
4232 | n++; | |
4233 | /* On MIPS and SH, delay slot instructions can only be restarted if | |
4234 | they were already the first instruction in the TB. If this is not | |
bf20dc07 | 4235 | the first instruction in a TB then re-execute the preceding |
2e70f6ef PB |
4236 | branch. */ |
4237 | #if defined(TARGET_MIPS) | |
4238 | if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) { | |
4239 | env->active_tc.PC -= 4; | |
4240 | env->icount_decr.u16.low++; | |
4241 | env->hflags &= ~MIPS_HFLAG_BMASK; | |
4242 | } | |
4243 | #elif defined(TARGET_SH4) | |
4244 | if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0 | |
4245 | && n > 1) { | |
4246 | env->pc -= 2; | |
4247 | env->icount_decr.u16.low++; | |
4248 | env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL); | |
4249 | } | |
4250 | #endif | |
4251 | /* This should never happen. */ | |
4252 | if (n > CF_COUNT_MASK) | |
4253 | cpu_abort(env, "TB too big during recompile"); | |
4254 | ||
4255 | cflags = n | CF_LAST_IO; | |
4256 | pc = tb->pc; | |
4257 | cs_base = tb->cs_base; | |
4258 | flags = tb->flags; | |
4259 | tb_phys_invalidate(tb, -1); | |
4260 | /* FIXME: In theory this could raise an exception. In practice | |
4261 | we have already translated the block once so it's probably ok. */ | |
4262 | tb_gen_code(env, pc, cs_base, flags, cflags); | |
bf20dc07 | 4263 | /* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not |
2e70f6ef PB |
4264 | the first in the TB) then we end up generating a whole new TB and |
4265 | repeating the fault, which is horribly inefficient. | |
4266 | Better would be to execute just this insn uncached, or generate a | |
4267 | second new TB. */ | |
4268 | cpu_resume_from_signal(env, NULL); | |
4269 | } | |
4270 | ||
b3755a91 PB |
4271 | #if !defined(CONFIG_USER_ONLY) |
4272 | ||
055403b2 | 4273 | void dump_exec_info(FILE *f, fprintf_function cpu_fprintf) |
e3db7226 FB |
4274 | { |
4275 | int i, target_code_size, max_target_code_size; | |
4276 | int direct_jmp_count, direct_jmp2_count, cross_page; | |
4277 | TranslationBlock *tb; | |
3b46e624 | 4278 | |
e3db7226 FB |
4279 | target_code_size = 0; |
4280 | max_target_code_size = 0; | |
4281 | cross_page = 0; | |
4282 | direct_jmp_count = 0; | |
4283 | direct_jmp2_count = 0; | |
4284 | for(i = 0; i < nb_tbs; i++) { | |
4285 | tb = &tbs[i]; | |
4286 | target_code_size += tb->size; | |
4287 | if (tb->size > max_target_code_size) | |
4288 | max_target_code_size = tb->size; | |
4289 | if (tb->page_addr[1] != -1) | |
4290 | cross_page++; | |
4291 | if (tb->tb_next_offset[0] != 0xffff) { | |
4292 | direct_jmp_count++; | |
4293 | if (tb->tb_next_offset[1] != 0xffff) { | |
4294 | direct_jmp2_count++; | |
4295 | } | |
4296 | } | |
4297 | } | |
4298 | /* XXX: avoid using doubles ? */ | |
57fec1fe | 4299 | cpu_fprintf(f, "Translation buffer state:\n"); |
055403b2 | 4300 | cpu_fprintf(f, "gen code size %td/%ld\n", |
26a5f13b FB |
4301 | code_gen_ptr - code_gen_buffer, code_gen_buffer_max_size); |
4302 | cpu_fprintf(f, "TB count %d/%d\n", | |
4303 | nb_tbs, code_gen_max_blocks); | |
5fafdf24 | 4304 | cpu_fprintf(f, "TB avg target size %d max=%d bytes\n", |
e3db7226 FB |
4305 | nb_tbs ? target_code_size / nb_tbs : 0, |
4306 | max_target_code_size); | |
055403b2 | 4307 | cpu_fprintf(f, "TB avg host size %td bytes (expansion ratio: %0.1f)\n", |
e3db7226 FB |
4308 | nb_tbs ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0, |
4309 | target_code_size ? (double) (code_gen_ptr - code_gen_buffer) / target_code_size : 0); | |
5fafdf24 TS |
4310 | cpu_fprintf(f, "cross page TB count %d (%d%%)\n", |
4311 | cross_page, | |
e3db7226 FB |
4312 | nb_tbs ? (cross_page * 100) / nb_tbs : 0); |
4313 | cpu_fprintf(f, "direct jump count %d (%d%%) (2 jumps=%d %d%%)\n", | |
5fafdf24 | 4314 | direct_jmp_count, |
e3db7226 FB |
4315 | nb_tbs ? (direct_jmp_count * 100) / nb_tbs : 0, |
4316 | direct_jmp2_count, | |
4317 | nb_tbs ? (direct_jmp2_count * 100) / nb_tbs : 0); | |
57fec1fe | 4318 | cpu_fprintf(f, "\nStatistics:\n"); |
e3db7226 FB |
4319 | cpu_fprintf(f, "TB flush count %d\n", tb_flush_count); |
4320 | cpu_fprintf(f, "TB invalidate count %d\n", tb_phys_invalidate_count); | |
4321 | cpu_fprintf(f, "TLB flush count %d\n", tlb_flush_count); | |
b67d9a52 | 4322 | tcg_dump_info(f, cpu_fprintf); |
e3db7226 FB |
4323 | } |
4324 | ||
82afa586 BH |
4325 | /* |
4326 | * A helper function for the _utterly broken_ virtio device model to find out if | |
4327 | * it's running on a big endian machine. Don't do this at home kids! | |
4328 | */ | |
4329 | bool virtio_is_big_endian(void); | |
4330 | bool virtio_is_big_endian(void) | |
4331 | { | |
4332 | #if defined(TARGET_WORDS_BIGENDIAN) | |
4333 | return true; | |
4334 | #else | |
4335 | return false; | |
4336 | #endif | |
4337 | } | |
4338 | ||
61382a50 | 4339 | #endif |