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Commit | Line | Data |
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54936004 | 1 | /* |
5b6dd868 | 2 | * Virtual page mapping |
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" |
1de7afc9 | 32 | #include "qemu/osdep.h" |
9c17d615 | 33 | #include "sysemu/kvm.h" |
0d09e41a | 34 | #include "hw/xen/xen.h" |
1de7afc9 PB |
35 | #include "qemu/timer.h" |
36 | #include "qemu/config-file.h" | |
022c62cb | 37 | #include "exec/memory.h" |
9c17d615 | 38 | #include "sysemu/dma.h" |
022c62cb | 39 | #include "exec/address-spaces.h" |
53a5960a PB |
40 | #if defined(CONFIG_USER_ONLY) |
41 | #include <qemu.h> | |
432d268c | 42 | #else /* !CONFIG_USER_ONLY */ |
9c17d615 | 43 | #include "sysemu/xen-mapcache.h" |
6506e4f9 | 44 | #include "trace.h" |
53a5960a | 45 | #endif |
0d6d3c87 | 46 | #include "exec/cpu-all.h" |
54936004 | 47 | |
022c62cb | 48 | #include "exec/cputlb.h" |
5b6dd868 | 49 | #include "translate-all.h" |
0cac1b66 | 50 | |
022c62cb | 51 | #include "exec/memory-internal.h" |
67d95c15 | 52 | |
db7b5426 | 53 | //#define DEBUG_SUBPAGE |
1196be37 | 54 | |
e2eef170 | 55 | #if !defined(CONFIG_USER_ONLY) |
9fa3e853 | 56 | int phys_ram_fd; |
74576198 | 57 | static int in_migration; |
94a6b54f | 58 | |
a3161038 | 59 | RAMList ram_list = { .blocks = QTAILQ_HEAD_INITIALIZER(ram_list.blocks) }; |
62152b8a AK |
60 | |
61 | static MemoryRegion *system_memory; | |
309cb471 | 62 | static MemoryRegion *system_io; |
62152b8a | 63 | |
f6790af6 AK |
64 | AddressSpace address_space_io; |
65 | AddressSpace address_space_memory; | |
2673a5da | 66 | |
0844e007 | 67 | MemoryRegion io_mem_rom, io_mem_notdirty; |
acc9d80b | 68 | static MemoryRegion io_mem_unassigned; |
0e0df1e2 | 69 | |
e2eef170 | 70 | #endif |
9fa3e853 | 71 | |
9349b4f9 | 72 | CPUArchState *first_cpu; |
6a00d601 FB |
73 | /* current CPU in the current thread. It is only valid inside |
74 | cpu_exec() */ | |
9349b4f9 | 75 | DEFINE_TLS(CPUArchState *,cpu_single_env); |
2e70f6ef | 76 | /* 0 = Do not count executed instructions. |
bf20dc07 | 77 | 1 = Precise instruction counting. |
2e70f6ef | 78 | 2 = Adaptive rate instruction counting. */ |
5708fc66 | 79 | int use_icount; |
6a00d601 | 80 | |
e2eef170 | 81 | #if !defined(CONFIG_USER_ONLY) |
4346ae3e | 82 | |
1db8abb1 PB |
83 | typedef struct PhysPageEntry PhysPageEntry; |
84 | ||
85 | struct PhysPageEntry { | |
86 | uint16_t is_leaf : 1; | |
87 | /* index into phys_sections (is_leaf) or phys_map_nodes (!is_leaf) */ | |
88 | uint16_t ptr : 15; | |
89 | }; | |
90 | ||
0475d94f PB |
91 | typedef PhysPageEntry Node[L2_SIZE]; |
92 | ||
1db8abb1 PB |
93 | struct AddressSpaceDispatch { |
94 | /* This is a multi-level map on the physical address space. | |
95 | * The bottom level has pointers to MemoryRegionSections. | |
96 | */ | |
97 | PhysPageEntry phys_map; | |
0475d94f PB |
98 | Node *nodes; |
99 | MemoryRegionSection *sections; | |
acc9d80b | 100 | AddressSpace *as; |
1db8abb1 PB |
101 | }; |
102 | ||
90260c6c JK |
103 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
104 | typedef struct subpage_t { | |
105 | MemoryRegion iomem; | |
acc9d80b | 106 | AddressSpace *as; |
90260c6c JK |
107 | hwaddr base; |
108 | uint16_t sub_section[TARGET_PAGE_SIZE]; | |
109 | } subpage_t; | |
110 | ||
b41aac4f LPF |
111 | #define PHYS_SECTION_UNASSIGNED 0 |
112 | #define PHYS_SECTION_NOTDIRTY 1 | |
113 | #define PHYS_SECTION_ROM 2 | |
114 | #define PHYS_SECTION_WATCH 3 | |
5312bd8b | 115 | |
9affd6fc PB |
116 | typedef struct PhysPageMap { |
117 | unsigned sections_nb; | |
118 | unsigned sections_nb_alloc; | |
119 | unsigned nodes_nb; | |
120 | unsigned nodes_nb_alloc; | |
121 | Node *nodes; | |
122 | MemoryRegionSection *sections; | |
123 | } PhysPageMap; | |
124 | ||
6092666e | 125 | static PhysPageMap *prev_map; |
9affd6fc | 126 | static PhysPageMap next_map; |
d6f2ea22 | 127 | |
07f07b31 | 128 | #define PHYS_MAP_NODE_NIL (((uint16_t)~0) >> 1) |
d6f2ea22 | 129 | |
e2eef170 | 130 | static void io_mem_init(void); |
62152b8a | 131 | static void memory_map_init(void); |
8b9c99d9 | 132 | static void *qemu_safe_ram_ptr(ram_addr_t addr); |
e2eef170 | 133 | |
1ec9b909 | 134 | static MemoryRegion io_mem_watch; |
6658ffb8 | 135 | #endif |
fd6ce8f6 | 136 | |
6d9a1304 | 137 | #if !defined(CONFIG_USER_ONLY) |
d6f2ea22 | 138 | |
f7bf5461 | 139 | static void phys_map_node_reserve(unsigned nodes) |
d6f2ea22 | 140 | { |
9affd6fc PB |
141 | if (next_map.nodes_nb + nodes > next_map.nodes_nb_alloc) { |
142 | next_map.nodes_nb_alloc = MAX(next_map.nodes_nb_alloc * 2, | |
143 | 16); | |
144 | next_map.nodes_nb_alloc = MAX(next_map.nodes_nb_alloc, | |
145 | next_map.nodes_nb + nodes); | |
146 | next_map.nodes = g_renew(Node, next_map.nodes, | |
147 | next_map.nodes_nb_alloc); | |
d6f2ea22 | 148 | } |
f7bf5461 AK |
149 | } |
150 | ||
151 | static uint16_t phys_map_node_alloc(void) | |
152 | { | |
153 | unsigned i; | |
154 | uint16_t ret; | |
155 | ||
9affd6fc | 156 | ret = next_map.nodes_nb++; |
f7bf5461 | 157 | assert(ret != PHYS_MAP_NODE_NIL); |
9affd6fc | 158 | assert(ret != next_map.nodes_nb_alloc); |
d6f2ea22 | 159 | for (i = 0; i < L2_SIZE; ++i) { |
9affd6fc PB |
160 | next_map.nodes[ret][i].is_leaf = 0; |
161 | next_map.nodes[ret][i].ptr = PHYS_MAP_NODE_NIL; | |
d6f2ea22 | 162 | } |
f7bf5461 | 163 | return ret; |
d6f2ea22 AK |
164 | } |
165 | ||
a8170e5e AK |
166 | static void phys_page_set_level(PhysPageEntry *lp, hwaddr *index, |
167 | hwaddr *nb, uint16_t leaf, | |
2999097b | 168 | int level) |
f7bf5461 AK |
169 | { |
170 | PhysPageEntry *p; | |
171 | int i; | |
a8170e5e | 172 | hwaddr step = (hwaddr)1 << (level * L2_BITS); |
108c49b8 | 173 | |
07f07b31 | 174 | if (!lp->is_leaf && lp->ptr == PHYS_MAP_NODE_NIL) { |
c19e8800 | 175 | lp->ptr = phys_map_node_alloc(); |
9affd6fc | 176 | p = next_map.nodes[lp->ptr]; |
f7bf5461 AK |
177 | if (level == 0) { |
178 | for (i = 0; i < L2_SIZE; i++) { | |
07f07b31 | 179 | p[i].is_leaf = 1; |
b41aac4f | 180 | p[i].ptr = PHYS_SECTION_UNASSIGNED; |
4346ae3e | 181 | } |
67c4d23c | 182 | } |
f7bf5461 | 183 | } else { |
9affd6fc | 184 | p = next_map.nodes[lp->ptr]; |
92e873b9 | 185 | } |
2999097b | 186 | lp = &p[(*index >> (level * L2_BITS)) & (L2_SIZE - 1)]; |
f7bf5461 | 187 | |
2999097b | 188 | while (*nb && lp < &p[L2_SIZE]) { |
07f07b31 AK |
189 | if ((*index & (step - 1)) == 0 && *nb >= step) { |
190 | lp->is_leaf = true; | |
c19e8800 | 191 | lp->ptr = leaf; |
07f07b31 AK |
192 | *index += step; |
193 | *nb -= step; | |
2999097b AK |
194 | } else { |
195 | phys_page_set_level(lp, index, nb, leaf, level - 1); | |
196 | } | |
197 | ++lp; | |
f7bf5461 AK |
198 | } |
199 | } | |
200 | ||
ac1970fb | 201 | static void phys_page_set(AddressSpaceDispatch *d, |
a8170e5e | 202 | hwaddr index, hwaddr nb, |
2999097b | 203 | uint16_t leaf) |
f7bf5461 | 204 | { |
2999097b | 205 | /* Wildly overreserve - it doesn't matter much. */ |
07f07b31 | 206 | phys_map_node_reserve(3 * P_L2_LEVELS); |
5cd2c5b6 | 207 | |
ac1970fb | 208 | phys_page_set_level(&d->phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); |
92e873b9 FB |
209 | } |
210 | ||
9affd6fc PB |
211 | static MemoryRegionSection *phys_page_find(PhysPageEntry lp, hwaddr index, |
212 | Node *nodes, MemoryRegionSection *sections) | |
92e873b9 | 213 | { |
31ab2b4a AK |
214 | PhysPageEntry *p; |
215 | int i; | |
f1f6e3b8 | 216 | |
07f07b31 | 217 | for (i = P_L2_LEVELS - 1; i >= 0 && !lp.is_leaf; i--) { |
c19e8800 | 218 | if (lp.ptr == PHYS_MAP_NODE_NIL) { |
9affd6fc | 219 | return §ions[PHYS_SECTION_UNASSIGNED]; |
31ab2b4a | 220 | } |
9affd6fc | 221 | p = nodes[lp.ptr]; |
31ab2b4a | 222 | lp = p[(index >> (i * L2_BITS)) & (L2_SIZE - 1)]; |
5312bd8b | 223 | } |
9affd6fc | 224 | return §ions[lp.ptr]; |
f3705d53 AK |
225 | } |
226 | ||
e5548617 BS |
227 | bool memory_region_is_unassigned(MemoryRegion *mr) |
228 | { | |
2a8e7499 | 229 | return mr != &io_mem_rom && mr != &io_mem_notdirty && !mr->rom_device |
5b6dd868 | 230 | && mr != &io_mem_watch; |
fd6ce8f6 | 231 | } |
149f54b5 | 232 | |
c7086b4a | 233 | static MemoryRegionSection *address_space_lookup_region(AddressSpaceDispatch *d, |
90260c6c JK |
234 | hwaddr addr, |
235 | bool resolve_subpage) | |
9f029603 | 236 | { |
90260c6c JK |
237 | MemoryRegionSection *section; |
238 | subpage_t *subpage; | |
239 | ||
0475d94f PB |
240 | section = phys_page_find(d->phys_map, addr >> TARGET_PAGE_BITS, |
241 | d->nodes, d->sections); | |
90260c6c JK |
242 | if (resolve_subpage && section->mr->subpage) { |
243 | subpage = container_of(section->mr, subpage_t, iomem); | |
0475d94f | 244 | section = &d->sections[subpage->sub_section[SUBPAGE_IDX(addr)]]; |
90260c6c JK |
245 | } |
246 | return section; | |
9f029603 JK |
247 | } |
248 | ||
90260c6c | 249 | static MemoryRegionSection * |
c7086b4a | 250 | address_space_translate_internal(AddressSpaceDispatch *d, hwaddr addr, hwaddr *xlat, |
90260c6c | 251 | hwaddr *plen, bool resolve_subpage) |
149f54b5 PB |
252 | { |
253 | MemoryRegionSection *section; | |
254 | Int128 diff; | |
255 | ||
c7086b4a | 256 | section = address_space_lookup_region(d, addr, resolve_subpage); |
149f54b5 PB |
257 | /* Compute offset within MemoryRegionSection */ |
258 | addr -= section->offset_within_address_space; | |
259 | ||
260 | /* Compute offset within MemoryRegion */ | |
261 | *xlat = addr + section->offset_within_region; | |
262 | ||
263 | diff = int128_sub(section->mr->size, int128_make64(addr)); | |
3752a036 | 264 | *plen = int128_get64(int128_min(diff, int128_make64(*plen))); |
149f54b5 PB |
265 | return section; |
266 | } | |
90260c6c | 267 | |
5c8a00ce PB |
268 | MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr, |
269 | hwaddr *xlat, hwaddr *plen, | |
270 | bool is_write) | |
90260c6c | 271 | { |
30951157 AK |
272 | IOMMUTLBEntry iotlb; |
273 | MemoryRegionSection *section; | |
274 | MemoryRegion *mr; | |
275 | hwaddr len = *plen; | |
276 | ||
277 | for (;;) { | |
c7086b4a | 278 | section = address_space_translate_internal(as->dispatch, addr, &addr, plen, true); |
30951157 AK |
279 | mr = section->mr; |
280 | ||
281 | if (!mr->iommu_ops) { | |
282 | break; | |
283 | } | |
284 | ||
285 | iotlb = mr->iommu_ops->translate(mr, addr); | |
286 | addr = ((iotlb.translated_addr & ~iotlb.addr_mask) | |
287 | | (addr & iotlb.addr_mask)); | |
288 | len = MIN(len, (addr | iotlb.addr_mask) - addr + 1); | |
289 | if (!(iotlb.perm & (1 << is_write))) { | |
290 | mr = &io_mem_unassigned; | |
291 | break; | |
292 | } | |
293 | ||
294 | as = iotlb.target_as; | |
295 | } | |
296 | ||
297 | *plen = len; | |
298 | *xlat = addr; | |
299 | return mr; | |
90260c6c JK |
300 | } |
301 | ||
302 | MemoryRegionSection * | |
303 | address_space_translate_for_iotlb(AddressSpace *as, hwaddr addr, hwaddr *xlat, | |
304 | hwaddr *plen) | |
305 | { | |
30951157 | 306 | MemoryRegionSection *section; |
c7086b4a | 307 | section = address_space_translate_internal(as->dispatch, addr, xlat, plen, false); |
30951157 AK |
308 | |
309 | assert(!section->mr->iommu_ops); | |
310 | return section; | |
90260c6c | 311 | } |
5b6dd868 | 312 | #endif |
fd6ce8f6 | 313 | |
5b6dd868 | 314 | void cpu_exec_init_all(void) |
fdbb84d1 | 315 | { |
5b6dd868 | 316 | #if !defined(CONFIG_USER_ONLY) |
b2a8658e | 317 | qemu_mutex_init(&ram_list.mutex); |
5b6dd868 BS |
318 | memory_map_init(); |
319 | io_mem_init(); | |
fdbb84d1 | 320 | #endif |
5b6dd868 | 321 | } |
fdbb84d1 | 322 | |
b170fce3 | 323 | #if !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
324 | |
325 | static int cpu_common_post_load(void *opaque, int version_id) | |
fd6ce8f6 | 326 | { |
259186a7 | 327 | CPUState *cpu = opaque; |
a513fe19 | 328 | |
5b6dd868 BS |
329 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
330 | version_id is increased. */ | |
259186a7 AF |
331 | cpu->interrupt_request &= ~0x01; |
332 | tlb_flush(cpu->env_ptr, 1); | |
5b6dd868 BS |
333 | |
334 | return 0; | |
a513fe19 | 335 | } |
7501267e | 336 | |
1a1562f5 | 337 | const VMStateDescription vmstate_cpu_common = { |
5b6dd868 BS |
338 | .name = "cpu_common", |
339 | .version_id = 1, | |
340 | .minimum_version_id = 1, | |
341 | .minimum_version_id_old = 1, | |
342 | .post_load = cpu_common_post_load, | |
343 | .fields = (VMStateField []) { | |
259186a7 AF |
344 | VMSTATE_UINT32(halted, CPUState), |
345 | VMSTATE_UINT32(interrupt_request, CPUState), | |
5b6dd868 BS |
346 | VMSTATE_END_OF_LIST() |
347 | } | |
348 | }; | |
1a1562f5 | 349 | |
5b6dd868 | 350 | #endif |
ea041c0e | 351 | |
38d8f5c8 | 352 | CPUState *qemu_get_cpu(int index) |
ea041c0e | 353 | { |
5b6dd868 | 354 | CPUArchState *env = first_cpu; |
38d8f5c8 | 355 | CPUState *cpu = NULL; |
ea041c0e | 356 | |
5b6dd868 | 357 | while (env) { |
55e5c285 AF |
358 | cpu = ENV_GET_CPU(env); |
359 | if (cpu->cpu_index == index) { | |
5b6dd868 | 360 | break; |
55e5c285 | 361 | } |
5b6dd868 | 362 | env = env->next_cpu; |
ea041c0e | 363 | } |
5b6dd868 | 364 | |
d76fddae | 365 | return env ? cpu : NULL; |
ea041c0e FB |
366 | } |
367 | ||
d6b9e0d6 MT |
368 | void qemu_for_each_cpu(void (*func)(CPUState *cpu, void *data), void *data) |
369 | { | |
370 | CPUArchState *env = first_cpu; | |
371 | ||
372 | while (env) { | |
373 | func(ENV_GET_CPU(env), data); | |
374 | env = env->next_cpu; | |
375 | } | |
376 | } | |
377 | ||
5b6dd868 | 378 | void cpu_exec_init(CPUArchState *env) |
ea041c0e | 379 | { |
5b6dd868 | 380 | CPUState *cpu = ENV_GET_CPU(env); |
b170fce3 | 381 | CPUClass *cc = CPU_GET_CLASS(cpu); |
5b6dd868 BS |
382 | CPUArchState **penv; |
383 | int cpu_index; | |
384 | ||
385 | #if defined(CONFIG_USER_ONLY) | |
386 | cpu_list_lock(); | |
387 | #endif | |
388 | env->next_cpu = NULL; | |
389 | penv = &first_cpu; | |
390 | cpu_index = 0; | |
391 | while (*penv != NULL) { | |
392 | penv = &(*penv)->next_cpu; | |
393 | cpu_index++; | |
394 | } | |
55e5c285 | 395 | cpu->cpu_index = cpu_index; |
1b1ed8dc | 396 | cpu->numa_node = 0; |
5b6dd868 BS |
397 | QTAILQ_INIT(&env->breakpoints); |
398 | QTAILQ_INIT(&env->watchpoints); | |
399 | #ifndef CONFIG_USER_ONLY | |
400 | cpu->thread_id = qemu_get_thread_id(); | |
401 | #endif | |
402 | *penv = env; | |
403 | #if defined(CONFIG_USER_ONLY) | |
404 | cpu_list_unlock(); | |
405 | #endif | |
259186a7 | 406 | vmstate_register(NULL, cpu_index, &vmstate_cpu_common, cpu); |
5b6dd868 | 407 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
408 | register_savevm(NULL, "cpu", cpu_index, CPU_SAVE_VERSION, |
409 | cpu_save, cpu_load, env); | |
b170fce3 | 410 | assert(cc->vmsd == NULL); |
5b6dd868 | 411 | #endif |
b170fce3 AF |
412 | if (cc->vmsd != NULL) { |
413 | vmstate_register(NULL, cpu_index, cc->vmsd, cpu); | |
414 | } | |
ea041c0e FB |
415 | } |
416 | ||
1fddef4b | 417 | #if defined(TARGET_HAS_ICE) |
94df27fd | 418 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 419 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
94df27fd PB |
420 | { |
421 | tb_invalidate_phys_page_range(pc, pc + 1, 0); | |
422 | } | |
423 | #else | |
1e7855a5 MF |
424 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
425 | { | |
9d70c4b7 MF |
426 | tb_invalidate_phys_addr(cpu_get_phys_page_debug(env, pc) | |
427 | (pc & ~TARGET_PAGE_MASK)); | |
1e7855a5 | 428 | } |
c27004ec | 429 | #endif |
94df27fd | 430 | #endif /* TARGET_HAS_ICE */ |
d720b93d | 431 | |
c527ee8f | 432 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 433 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
c527ee8f PB |
434 | |
435 | { | |
436 | } | |
437 | ||
9349b4f9 | 438 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
c527ee8f PB |
439 | int flags, CPUWatchpoint **watchpoint) |
440 | { | |
441 | return -ENOSYS; | |
442 | } | |
443 | #else | |
6658ffb8 | 444 | /* Add a watchpoint. */ |
9349b4f9 | 445 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 446 | int flags, CPUWatchpoint **watchpoint) |
6658ffb8 | 447 | { |
b4051334 | 448 | target_ulong len_mask = ~(len - 1); |
c0ce998e | 449 | CPUWatchpoint *wp; |
6658ffb8 | 450 | |
b4051334 | 451 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
0dc23828 MF |
452 | if ((len & (len - 1)) || (addr & ~len_mask) || |
453 | len == 0 || len > TARGET_PAGE_SIZE) { | |
b4051334 AL |
454 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " |
455 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); | |
456 | return -EINVAL; | |
457 | } | |
7267c094 | 458 | wp = g_malloc(sizeof(*wp)); |
a1d1bb31 AL |
459 | |
460 | wp->vaddr = addr; | |
b4051334 | 461 | wp->len_mask = len_mask; |
a1d1bb31 AL |
462 | wp->flags = flags; |
463 | ||
2dc9f411 | 464 | /* keep all GDB-injected watchpoints in front */ |
c0ce998e | 465 | if (flags & BP_GDB) |
72cf2d4f | 466 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
c0ce998e | 467 | else |
72cf2d4f | 468 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
6658ffb8 | 469 | |
6658ffb8 | 470 | tlb_flush_page(env, addr); |
a1d1bb31 AL |
471 | |
472 | if (watchpoint) | |
473 | *watchpoint = wp; | |
474 | return 0; | |
6658ffb8 PB |
475 | } |
476 | ||
a1d1bb31 | 477 | /* Remove a specific watchpoint. */ |
9349b4f9 | 478 | int cpu_watchpoint_remove(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 479 | int flags) |
6658ffb8 | 480 | { |
b4051334 | 481 | target_ulong len_mask = ~(len - 1); |
a1d1bb31 | 482 | CPUWatchpoint *wp; |
6658ffb8 | 483 | |
72cf2d4f | 484 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 | 485 | if (addr == wp->vaddr && len_mask == wp->len_mask |
6e140f28 | 486 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
a1d1bb31 | 487 | cpu_watchpoint_remove_by_ref(env, wp); |
6658ffb8 PB |
488 | return 0; |
489 | } | |
490 | } | |
a1d1bb31 | 491 | return -ENOENT; |
6658ffb8 PB |
492 | } |
493 | ||
a1d1bb31 | 494 | /* Remove a specific watchpoint by reference. */ |
9349b4f9 | 495 | void cpu_watchpoint_remove_by_ref(CPUArchState *env, CPUWatchpoint *watchpoint) |
a1d1bb31 | 496 | { |
72cf2d4f | 497 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
7d03f82f | 498 | |
a1d1bb31 AL |
499 | tlb_flush_page(env, watchpoint->vaddr); |
500 | ||
7267c094 | 501 | g_free(watchpoint); |
a1d1bb31 AL |
502 | } |
503 | ||
504 | /* Remove all matching watchpoints. */ | |
9349b4f9 | 505 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 | 506 | { |
c0ce998e | 507 | CPUWatchpoint *wp, *next; |
a1d1bb31 | 508 | |
72cf2d4f | 509 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
a1d1bb31 AL |
510 | if (wp->flags & mask) |
511 | cpu_watchpoint_remove_by_ref(env, wp); | |
c0ce998e | 512 | } |
7d03f82f | 513 | } |
c527ee8f | 514 | #endif |
7d03f82f | 515 | |
a1d1bb31 | 516 | /* Add a breakpoint. */ |
9349b4f9 | 517 | int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags, |
a1d1bb31 | 518 | CPUBreakpoint **breakpoint) |
4c3a88a2 | 519 | { |
1fddef4b | 520 | #if defined(TARGET_HAS_ICE) |
c0ce998e | 521 | CPUBreakpoint *bp; |
3b46e624 | 522 | |
7267c094 | 523 | bp = g_malloc(sizeof(*bp)); |
4c3a88a2 | 524 | |
a1d1bb31 AL |
525 | bp->pc = pc; |
526 | bp->flags = flags; | |
527 | ||
2dc9f411 | 528 | /* keep all GDB-injected breakpoints in front */ |
c0ce998e | 529 | if (flags & BP_GDB) |
72cf2d4f | 530 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
c0ce998e | 531 | else |
72cf2d4f | 532 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
3b46e624 | 533 | |
d720b93d | 534 | breakpoint_invalidate(env, pc); |
a1d1bb31 AL |
535 | |
536 | if (breakpoint) | |
537 | *breakpoint = bp; | |
4c3a88a2 FB |
538 | return 0; |
539 | #else | |
a1d1bb31 | 540 | return -ENOSYS; |
4c3a88a2 FB |
541 | #endif |
542 | } | |
543 | ||
a1d1bb31 | 544 | /* Remove a specific breakpoint. */ |
9349b4f9 | 545 | int cpu_breakpoint_remove(CPUArchState *env, target_ulong pc, int flags) |
a1d1bb31 | 546 | { |
7d03f82f | 547 | #if defined(TARGET_HAS_ICE) |
a1d1bb31 AL |
548 | CPUBreakpoint *bp; |
549 | ||
72cf2d4f | 550 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
a1d1bb31 AL |
551 | if (bp->pc == pc && bp->flags == flags) { |
552 | cpu_breakpoint_remove_by_ref(env, bp); | |
553 | return 0; | |
554 | } | |
7d03f82f | 555 | } |
a1d1bb31 AL |
556 | return -ENOENT; |
557 | #else | |
558 | return -ENOSYS; | |
7d03f82f EI |
559 | #endif |
560 | } | |
561 | ||
a1d1bb31 | 562 | /* Remove a specific breakpoint by reference. */ |
9349b4f9 | 563 | void cpu_breakpoint_remove_by_ref(CPUArchState *env, CPUBreakpoint *breakpoint) |
4c3a88a2 | 564 | { |
1fddef4b | 565 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 566 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
d720b93d | 567 | |
a1d1bb31 AL |
568 | breakpoint_invalidate(env, breakpoint->pc); |
569 | ||
7267c094 | 570 | g_free(breakpoint); |
a1d1bb31 AL |
571 | #endif |
572 | } | |
573 | ||
574 | /* Remove all matching breakpoints. */ | |
9349b4f9 | 575 | void cpu_breakpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 AL |
576 | { |
577 | #if defined(TARGET_HAS_ICE) | |
c0ce998e | 578 | CPUBreakpoint *bp, *next; |
a1d1bb31 | 579 | |
72cf2d4f | 580 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
a1d1bb31 AL |
581 | if (bp->flags & mask) |
582 | cpu_breakpoint_remove_by_ref(env, bp); | |
c0ce998e | 583 | } |
4c3a88a2 FB |
584 | #endif |
585 | } | |
586 | ||
c33a346e FB |
587 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
588 | CPU loop after each instruction */ | |
9349b4f9 | 589 | void cpu_single_step(CPUArchState *env, int enabled) |
c33a346e | 590 | { |
1fddef4b | 591 | #if defined(TARGET_HAS_ICE) |
c33a346e FB |
592 | if (env->singlestep_enabled != enabled) { |
593 | env->singlestep_enabled = enabled; | |
e22a25c9 AL |
594 | if (kvm_enabled()) |
595 | kvm_update_guest_debug(env, 0); | |
596 | else { | |
ccbb4d44 | 597 | /* must flush all the translated code to avoid inconsistencies */ |
e22a25c9 AL |
598 | /* XXX: only flush what is necessary */ |
599 | tb_flush(env); | |
600 | } | |
c33a346e FB |
601 | } |
602 | #endif | |
603 | } | |
604 | ||
9349b4f9 | 605 | void cpu_abort(CPUArchState *env, const char *fmt, ...) |
7501267e | 606 | { |
878096ee | 607 | CPUState *cpu = ENV_GET_CPU(env); |
7501267e | 608 | va_list ap; |
493ae1f0 | 609 | va_list ap2; |
7501267e FB |
610 | |
611 | va_start(ap, fmt); | |
493ae1f0 | 612 | va_copy(ap2, ap); |
7501267e FB |
613 | fprintf(stderr, "qemu: fatal: "); |
614 | vfprintf(stderr, fmt, ap); | |
615 | fprintf(stderr, "\n"); | |
878096ee | 616 | cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
93fcfe39 AL |
617 | if (qemu_log_enabled()) { |
618 | qemu_log("qemu: fatal: "); | |
619 | qemu_log_vprintf(fmt, ap2); | |
620 | qemu_log("\n"); | |
6fd2a026 | 621 | log_cpu_state(env, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
31b1a7b4 | 622 | qemu_log_flush(); |
93fcfe39 | 623 | qemu_log_close(); |
924edcae | 624 | } |
493ae1f0 | 625 | va_end(ap2); |
f9373291 | 626 | va_end(ap); |
fd052bf6 RV |
627 | #if defined(CONFIG_USER_ONLY) |
628 | { | |
629 | struct sigaction act; | |
630 | sigfillset(&act.sa_mask); | |
631 | act.sa_handler = SIG_DFL; | |
632 | sigaction(SIGABRT, &act, NULL); | |
633 | } | |
634 | #endif | |
7501267e FB |
635 | abort(); |
636 | } | |
637 | ||
9349b4f9 | 638 | CPUArchState *cpu_copy(CPUArchState *env) |
c5be9f08 | 639 | { |
9349b4f9 AF |
640 | CPUArchState *new_env = cpu_init(env->cpu_model_str); |
641 | CPUArchState *next_cpu = new_env->next_cpu; | |
5a38f081 AL |
642 | #if defined(TARGET_HAS_ICE) |
643 | CPUBreakpoint *bp; | |
644 | CPUWatchpoint *wp; | |
645 | #endif | |
646 | ||
9349b4f9 | 647 | memcpy(new_env, env, sizeof(CPUArchState)); |
5a38f081 | 648 | |
55e5c285 | 649 | /* Preserve chaining. */ |
c5be9f08 | 650 | new_env->next_cpu = next_cpu; |
5a38f081 AL |
651 | |
652 | /* Clone all break/watchpoints. | |
653 | Note: Once we support ptrace with hw-debug register access, make sure | |
654 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
72cf2d4f BS |
655 | QTAILQ_INIT(&env->breakpoints); |
656 | QTAILQ_INIT(&env->watchpoints); | |
5a38f081 | 657 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 658 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
5a38f081 AL |
659 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
660 | } | |
72cf2d4f | 661 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
5a38f081 AL |
662 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
663 | wp->flags, NULL); | |
664 | } | |
665 | #endif | |
666 | ||
c5be9f08 TS |
667 | return new_env; |
668 | } | |
669 | ||
0124311e | 670 | #if !defined(CONFIG_USER_ONLY) |
d24981d3 JQ |
671 | static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end, |
672 | uintptr_t length) | |
673 | { | |
674 | uintptr_t start1; | |
675 | ||
676 | /* we modify the TLB cache so that the dirty bit will be set again | |
677 | when accessing the range */ | |
678 | start1 = (uintptr_t)qemu_safe_ram_ptr(start); | |
679 | /* Check that we don't span multiple blocks - this breaks the | |
680 | address comparisons below. */ | |
681 | if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1 | |
682 | != (end - 1) - start) { | |
683 | abort(); | |
684 | } | |
685 | cpu_tlb_reset_dirty_all(start1, length); | |
686 | ||
687 | } | |
688 | ||
5579c7f3 | 689 | /* Note: start and end must be within the same ram block. */ |
c227f099 | 690 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
0a962c02 | 691 | int dirty_flags) |
1ccde1cb | 692 | { |
d24981d3 | 693 | uintptr_t length; |
1ccde1cb FB |
694 | |
695 | start &= TARGET_PAGE_MASK; | |
696 | end = TARGET_PAGE_ALIGN(end); | |
697 | ||
698 | length = end - start; | |
699 | if (length == 0) | |
700 | return; | |
f7c11b53 | 701 | cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); |
f23db169 | 702 | |
d24981d3 JQ |
703 | if (tcg_enabled()) { |
704 | tlb_reset_dirty_range_all(start, end, length); | |
5579c7f3 | 705 | } |
1ccde1cb FB |
706 | } |
707 | ||
8b9c99d9 | 708 | static int cpu_physical_memory_set_dirty_tracking(int enable) |
74576198 | 709 | { |
f6f3fbca | 710 | int ret = 0; |
74576198 | 711 | in_migration = enable; |
f6f3fbca | 712 | return ret; |
74576198 AL |
713 | } |
714 | ||
a8170e5e | 715 | hwaddr memory_region_section_get_iotlb(CPUArchState *env, |
149f54b5 PB |
716 | MemoryRegionSection *section, |
717 | target_ulong vaddr, | |
718 | hwaddr paddr, hwaddr xlat, | |
719 | int prot, | |
720 | target_ulong *address) | |
e5548617 | 721 | { |
a8170e5e | 722 | hwaddr iotlb; |
e5548617 BS |
723 | CPUWatchpoint *wp; |
724 | ||
cc5bea60 | 725 | if (memory_region_is_ram(section->mr)) { |
e5548617 BS |
726 | /* Normal RAM. */ |
727 | iotlb = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) | |
149f54b5 | 728 | + xlat; |
e5548617 | 729 | if (!section->readonly) { |
b41aac4f | 730 | iotlb |= PHYS_SECTION_NOTDIRTY; |
e5548617 | 731 | } else { |
b41aac4f | 732 | iotlb |= PHYS_SECTION_ROM; |
e5548617 BS |
733 | } |
734 | } else { | |
0475d94f | 735 | iotlb = section - address_space_memory.dispatch->sections; |
149f54b5 | 736 | iotlb += xlat; |
e5548617 BS |
737 | } |
738 | ||
739 | /* Make accesses to pages with watchpoints go via the | |
740 | watchpoint trap routines. */ | |
741 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { | |
742 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { | |
743 | /* Avoid trapping reads of pages with a write breakpoint. */ | |
744 | if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) { | |
b41aac4f | 745 | iotlb = PHYS_SECTION_WATCH + paddr; |
e5548617 BS |
746 | *address |= TLB_MMIO; |
747 | break; | |
748 | } | |
749 | } | |
750 | } | |
751 | ||
752 | return iotlb; | |
753 | } | |
9fa3e853 FB |
754 | #endif /* defined(CONFIG_USER_ONLY) */ |
755 | ||
e2eef170 | 756 | #if !defined(CONFIG_USER_ONLY) |
8da3ff18 | 757 | |
c227f099 | 758 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 759 | uint16_t section); |
acc9d80b | 760 | static subpage_t *subpage_init(AddressSpace *as, hwaddr base); |
54688b1e | 761 | |
5312bd8b AK |
762 | static uint16_t phys_section_add(MemoryRegionSection *section) |
763 | { | |
68f3f65b PB |
764 | /* The physical section number is ORed with a page-aligned |
765 | * pointer to produce the iotlb entries. Thus it should | |
766 | * never overflow into the page-aligned value. | |
767 | */ | |
9affd6fc | 768 | assert(next_map.sections_nb < TARGET_PAGE_SIZE); |
68f3f65b | 769 | |
9affd6fc PB |
770 | if (next_map.sections_nb == next_map.sections_nb_alloc) { |
771 | next_map.sections_nb_alloc = MAX(next_map.sections_nb_alloc * 2, | |
772 | 16); | |
773 | next_map.sections = g_renew(MemoryRegionSection, next_map.sections, | |
774 | next_map.sections_nb_alloc); | |
5312bd8b | 775 | } |
9affd6fc | 776 | next_map.sections[next_map.sections_nb] = *section; |
dfde4e6e | 777 | memory_region_ref(section->mr); |
9affd6fc | 778 | return next_map.sections_nb++; |
5312bd8b AK |
779 | } |
780 | ||
058bc4b5 PB |
781 | static void phys_section_destroy(MemoryRegion *mr) |
782 | { | |
dfde4e6e PB |
783 | memory_region_unref(mr); |
784 | ||
058bc4b5 PB |
785 | if (mr->subpage) { |
786 | subpage_t *subpage = container_of(mr, subpage_t, iomem); | |
787 | memory_region_destroy(&subpage->iomem); | |
788 | g_free(subpage); | |
789 | } | |
790 | } | |
791 | ||
6092666e | 792 | static void phys_sections_free(PhysPageMap *map) |
5312bd8b | 793 | { |
9affd6fc PB |
794 | while (map->sections_nb > 0) { |
795 | MemoryRegionSection *section = &map->sections[--map->sections_nb]; | |
058bc4b5 PB |
796 | phys_section_destroy(section->mr); |
797 | } | |
9affd6fc PB |
798 | g_free(map->sections); |
799 | g_free(map->nodes); | |
6092666e | 800 | g_free(map); |
5312bd8b AK |
801 | } |
802 | ||
ac1970fb | 803 | static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *section) |
0f0cb164 AK |
804 | { |
805 | subpage_t *subpage; | |
a8170e5e | 806 | hwaddr base = section->offset_within_address_space |
0f0cb164 | 807 | & TARGET_PAGE_MASK; |
9affd6fc PB |
808 | MemoryRegionSection *existing = phys_page_find(d->phys_map, base >> TARGET_PAGE_BITS, |
809 | next_map.nodes, next_map.sections); | |
0f0cb164 AK |
810 | MemoryRegionSection subsection = { |
811 | .offset_within_address_space = base, | |
052e87b0 | 812 | .size = int128_make64(TARGET_PAGE_SIZE), |
0f0cb164 | 813 | }; |
a8170e5e | 814 | hwaddr start, end; |
0f0cb164 | 815 | |
f3705d53 | 816 | assert(existing->mr->subpage || existing->mr == &io_mem_unassigned); |
0f0cb164 | 817 | |
f3705d53 | 818 | if (!(existing->mr->subpage)) { |
acc9d80b | 819 | subpage = subpage_init(d->as, base); |
0f0cb164 | 820 | subsection.mr = &subpage->iomem; |
ac1970fb | 821 | phys_page_set(d, base >> TARGET_PAGE_BITS, 1, |
2999097b | 822 | phys_section_add(&subsection)); |
0f0cb164 | 823 | } else { |
f3705d53 | 824 | subpage = container_of(existing->mr, subpage_t, iomem); |
0f0cb164 AK |
825 | } |
826 | start = section->offset_within_address_space & ~TARGET_PAGE_MASK; | |
052e87b0 | 827 | end = start + int128_get64(section->size) - 1; |
0f0cb164 AK |
828 | subpage_register(subpage, start, end, phys_section_add(section)); |
829 | } | |
830 | ||
831 | ||
052e87b0 PB |
832 | static void register_multipage(AddressSpaceDispatch *d, |
833 | MemoryRegionSection *section) | |
33417e70 | 834 | { |
a8170e5e | 835 | hwaddr start_addr = section->offset_within_address_space; |
5312bd8b | 836 | uint16_t section_index = phys_section_add(section); |
052e87b0 PB |
837 | uint64_t num_pages = int128_get64(int128_rshift(section->size, |
838 | TARGET_PAGE_BITS)); | |
dd81124b | 839 | |
733d5ef5 PB |
840 | assert(num_pages); |
841 | phys_page_set(d, start_addr >> TARGET_PAGE_BITS, num_pages, section_index); | |
33417e70 FB |
842 | } |
843 | ||
ac1970fb | 844 | static void mem_add(MemoryListener *listener, MemoryRegionSection *section) |
0f0cb164 | 845 | { |
89ae337a | 846 | AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener); |
00752703 | 847 | AddressSpaceDispatch *d = as->next_dispatch; |
99b9cc06 | 848 | MemoryRegionSection now = *section, remain = *section; |
052e87b0 | 849 | Int128 page_size = int128_make64(TARGET_PAGE_SIZE); |
0f0cb164 | 850 | |
733d5ef5 PB |
851 | if (now.offset_within_address_space & ~TARGET_PAGE_MASK) { |
852 | uint64_t left = TARGET_PAGE_ALIGN(now.offset_within_address_space) | |
853 | - now.offset_within_address_space; | |
854 | ||
052e87b0 | 855 | now.size = int128_min(int128_make64(left), now.size); |
ac1970fb | 856 | register_subpage(d, &now); |
733d5ef5 | 857 | } else { |
052e87b0 | 858 | now.size = int128_zero(); |
733d5ef5 | 859 | } |
052e87b0 PB |
860 | while (int128_ne(remain.size, now.size)) { |
861 | remain.size = int128_sub(remain.size, now.size); | |
862 | remain.offset_within_address_space += int128_get64(now.size); | |
863 | remain.offset_within_region += int128_get64(now.size); | |
69b67646 | 864 | now = remain; |
052e87b0 | 865 | if (int128_lt(remain.size, page_size)) { |
733d5ef5 PB |
866 | register_subpage(d, &now); |
867 | } else if (remain.offset_within_region & ~TARGET_PAGE_MASK) { | |
052e87b0 | 868 | now.size = page_size; |
ac1970fb | 869 | register_subpage(d, &now); |
69b67646 | 870 | } else { |
052e87b0 | 871 | now.size = int128_and(now.size, int128_neg(page_size)); |
ac1970fb | 872 | register_multipage(d, &now); |
69b67646 | 873 | } |
0f0cb164 AK |
874 | } |
875 | } | |
876 | ||
62a2744c SY |
877 | void qemu_flush_coalesced_mmio_buffer(void) |
878 | { | |
879 | if (kvm_enabled()) | |
880 | kvm_flush_coalesced_mmio_buffer(); | |
881 | } | |
882 | ||
b2a8658e UD |
883 | void qemu_mutex_lock_ramlist(void) |
884 | { | |
885 | qemu_mutex_lock(&ram_list.mutex); | |
886 | } | |
887 | ||
888 | void qemu_mutex_unlock_ramlist(void) | |
889 | { | |
890 | qemu_mutex_unlock(&ram_list.mutex); | |
891 | } | |
892 | ||
c902760f MT |
893 | #if defined(__linux__) && !defined(TARGET_S390X) |
894 | ||
895 | #include <sys/vfs.h> | |
896 | ||
897 | #define HUGETLBFS_MAGIC 0x958458f6 | |
898 | ||
899 | static long gethugepagesize(const char *path) | |
900 | { | |
901 | struct statfs fs; | |
902 | int ret; | |
903 | ||
904 | do { | |
9742bf26 | 905 | ret = statfs(path, &fs); |
c902760f MT |
906 | } while (ret != 0 && errno == EINTR); |
907 | ||
908 | if (ret != 0) { | |
9742bf26 YT |
909 | perror(path); |
910 | return 0; | |
c902760f MT |
911 | } |
912 | ||
913 | if (fs.f_type != HUGETLBFS_MAGIC) | |
9742bf26 | 914 | fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path); |
c902760f MT |
915 | |
916 | return fs.f_bsize; | |
917 | } | |
918 | ||
04b16653 AW |
919 | static void *file_ram_alloc(RAMBlock *block, |
920 | ram_addr_t memory, | |
921 | const char *path) | |
c902760f MT |
922 | { |
923 | char *filename; | |
8ca761f6 PF |
924 | char *sanitized_name; |
925 | char *c; | |
c902760f MT |
926 | void *area; |
927 | int fd; | |
928 | #ifdef MAP_POPULATE | |
929 | int flags; | |
930 | #endif | |
931 | unsigned long hpagesize; | |
932 | ||
933 | hpagesize = gethugepagesize(path); | |
934 | if (!hpagesize) { | |
9742bf26 | 935 | return NULL; |
c902760f MT |
936 | } |
937 | ||
938 | if (memory < hpagesize) { | |
939 | return NULL; | |
940 | } | |
941 | ||
942 | if (kvm_enabled() && !kvm_has_sync_mmu()) { | |
943 | fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n"); | |
944 | return NULL; | |
945 | } | |
946 | ||
8ca761f6 PF |
947 | /* Make name safe to use with mkstemp by replacing '/' with '_'. */ |
948 | sanitized_name = g_strdup(block->mr->name); | |
949 | for (c = sanitized_name; *c != '\0'; c++) { | |
950 | if (*c == '/') | |
951 | *c = '_'; | |
952 | } | |
953 | ||
954 | filename = g_strdup_printf("%s/qemu_back_mem.%s.XXXXXX", path, | |
955 | sanitized_name); | |
956 | g_free(sanitized_name); | |
c902760f MT |
957 | |
958 | fd = mkstemp(filename); | |
959 | if (fd < 0) { | |
9742bf26 | 960 | perror("unable to create backing store for hugepages"); |
e4ada482 | 961 | g_free(filename); |
9742bf26 | 962 | return NULL; |
c902760f MT |
963 | } |
964 | unlink(filename); | |
e4ada482 | 965 | g_free(filename); |
c902760f MT |
966 | |
967 | memory = (memory+hpagesize-1) & ~(hpagesize-1); | |
968 | ||
969 | /* | |
970 | * ftruncate is not supported by hugetlbfs in older | |
971 | * hosts, so don't bother bailing out on errors. | |
972 | * If anything goes wrong with it under other filesystems, | |
973 | * mmap will fail. | |
974 | */ | |
975 | if (ftruncate(fd, memory)) | |
9742bf26 | 976 | perror("ftruncate"); |
c902760f MT |
977 | |
978 | #ifdef MAP_POPULATE | |
979 | /* NB: MAP_POPULATE won't exhaustively alloc all phys pages in the case | |
980 | * MAP_PRIVATE is requested. For mem_prealloc we mmap as MAP_SHARED | |
981 | * to sidestep this quirk. | |
982 | */ | |
983 | flags = mem_prealloc ? MAP_POPULATE | MAP_SHARED : MAP_PRIVATE; | |
984 | area = mmap(0, memory, PROT_READ | PROT_WRITE, flags, fd, 0); | |
985 | #else | |
986 | area = mmap(0, memory, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); | |
987 | #endif | |
988 | if (area == MAP_FAILED) { | |
9742bf26 YT |
989 | perror("file_ram_alloc: can't mmap RAM pages"); |
990 | close(fd); | |
991 | return (NULL); | |
c902760f | 992 | } |
04b16653 | 993 | block->fd = fd; |
c902760f MT |
994 | return area; |
995 | } | |
996 | #endif | |
997 | ||
d17b5288 | 998 | static ram_addr_t find_ram_offset(ram_addr_t size) |
04b16653 AW |
999 | { |
1000 | RAMBlock *block, *next_block; | |
3e837b2c | 1001 | ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX; |
04b16653 | 1002 | |
49cd9ac6 SH |
1003 | assert(size != 0); /* it would hand out same offset multiple times */ |
1004 | ||
a3161038 | 1005 | if (QTAILQ_EMPTY(&ram_list.blocks)) |
04b16653 AW |
1006 | return 0; |
1007 | ||
a3161038 | 1008 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
f15fbc4b | 1009 | ram_addr_t end, next = RAM_ADDR_MAX; |
04b16653 AW |
1010 | |
1011 | end = block->offset + block->length; | |
1012 | ||
a3161038 | 1013 | QTAILQ_FOREACH(next_block, &ram_list.blocks, next) { |
04b16653 AW |
1014 | if (next_block->offset >= end) { |
1015 | next = MIN(next, next_block->offset); | |
1016 | } | |
1017 | } | |
1018 | if (next - end >= size && next - end < mingap) { | |
3e837b2c | 1019 | offset = end; |
04b16653 AW |
1020 | mingap = next - end; |
1021 | } | |
1022 | } | |
3e837b2c AW |
1023 | |
1024 | if (offset == RAM_ADDR_MAX) { | |
1025 | fprintf(stderr, "Failed to find gap of requested size: %" PRIu64 "\n", | |
1026 | (uint64_t)size); | |
1027 | abort(); | |
1028 | } | |
1029 | ||
04b16653 AW |
1030 | return offset; |
1031 | } | |
1032 | ||
652d7ec2 | 1033 | ram_addr_t last_ram_offset(void) |
d17b5288 AW |
1034 | { |
1035 | RAMBlock *block; | |
1036 | ram_addr_t last = 0; | |
1037 | ||
a3161038 | 1038 | QTAILQ_FOREACH(block, &ram_list.blocks, next) |
d17b5288 AW |
1039 | last = MAX(last, block->offset + block->length); |
1040 | ||
1041 | return last; | |
1042 | } | |
1043 | ||
ddb97f1d JB |
1044 | static void qemu_ram_setup_dump(void *addr, ram_addr_t size) |
1045 | { | |
1046 | int ret; | |
1047 | QemuOpts *machine_opts; | |
1048 | ||
1049 | /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */ | |
1050 | machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
1051 | if (machine_opts && | |
1052 | !qemu_opt_get_bool(machine_opts, "dump-guest-core", true)) { | |
1053 | ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP); | |
1054 | if (ret) { | |
1055 | perror("qemu_madvise"); | |
1056 | fprintf(stderr, "madvise doesn't support MADV_DONTDUMP, " | |
1057 | "but dump_guest_core=off specified\n"); | |
1058 | } | |
1059 | } | |
1060 | } | |
1061 | ||
c5705a77 | 1062 | void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) |
84b89d78 CM |
1063 | { |
1064 | RAMBlock *new_block, *block; | |
1065 | ||
c5705a77 | 1066 | new_block = NULL; |
a3161038 | 1067 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 AK |
1068 | if (block->offset == addr) { |
1069 | new_block = block; | |
1070 | break; | |
1071 | } | |
1072 | } | |
1073 | assert(new_block); | |
1074 | assert(!new_block->idstr[0]); | |
84b89d78 | 1075 | |
09e5ab63 AL |
1076 | if (dev) { |
1077 | char *id = qdev_get_dev_path(dev); | |
84b89d78 CM |
1078 | if (id) { |
1079 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); | |
7267c094 | 1080 | g_free(id); |
84b89d78 CM |
1081 | } |
1082 | } | |
1083 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); | |
1084 | ||
b2a8658e UD |
1085 | /* This assumes the iothread lock is taken here too. */ |
1086 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1087 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 | 1088 | if (block != new_block && !strcmp(block->idstr, new_block->idstr)) { |
84b89d78 CM |
1089 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
1090 | new_block->idstr); | |
1091 | abort(); | |
1092 | } | |
1093 | } | |
b2a8658e | 1094 | qemu_mutex_unlock_ramlist(); |
c5705a77 AK |
1095 | } |
1096 | ||
8490fc78 LC |
1097 | static int memory_try_enable_merging(void *addr, size_t len) |
1098 | { | |
1099 | QemuOpts *opts; | |
1100 | ||
1101 | opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
1102 | if (opts && !qemu_opt_get_bool(opts, "mem-merge", true)) { | |
1103 | /* disabled by the user */ | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE); | |
1108 | } | |
1109 | ||
c5705a77 AK |
1110 | ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, |
1111 | MemoryRegion *mr) | |
1112 | { | |
abb26d63 | 1113 | RAMBlock *block, *new_block; |
c5705a77 AK |
1114 | |
1115 | size = TARGET_PAGE_ALIGN(size); | |
1116 | new_block = g_malloc0(sizeof(*new_block)); | |
84b89d78 | 1117 | |
b2a8658e UD |
1118 | /* This assumes the iothread lock is taken here too. */ |
1119 | qemu_mutex_lock_ramlist(); | |
7c637366 | 1120 | new_block->mr = mr; |
432d268c | 1121 | new_block->offset = find_ram_offset(size); |
6977dfe6 YT |
1122 | if (host) { |
1123 | new_block->host = host; | |
cd19cfa2 | 1124 | new_block->flags |= RAM_PREALLOC_MASK; |
6977dfe6 YT |
1125 | } else { |
1126 | if (mem_path) { | |
c902760f | 1127 | #if defined (__linux__) && !defined(TARGET_S390X) |
6977dfe6 YT |
1128 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
1129 | if (!new_block->host) { | |
6eebf958 | 1130 | new_block->host = qemu_anon_ram_alloc(size); |
8490fc78 | 1131 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 1132 | } |
c902760f | 1133 | #else |
6977dfe6 YT |
1134 | fprintf(stderr, "-mem-path option unsupported\n"); |
1135 | exit(1); | |
c902760f | 1136 | #endif |
6977dfe6 | 1137 | } else { |
868bb33f | 1138 | if (xen_enabled()) { |
fce537d4 | 1139 | xen_ram_alloc(new_block->offset, size, mr); |
fdec9918 CB |
1140 | } else if (kvm_enabled()) { |
1141 | /* some s390/kvm configurations have special constraints */ | |
6eebf958 | 1142 | new_block->host = kvm_ram_alloc(size); |
432d268c | 1143 | } else { |
6eebf958 | 1144 | new_block->host = qemu_anon_ram_alloc(size); |
432d268c | 1145 | } |
8490fc78 | 1146 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 1147 | } |
c902760f | 1148 | } |
94a6b54f PB |
1149 | new_block->length = size; |
1150 | ||
abb26d63 PB |
1151 | /* Keep the list sorted from biggest to smallest block. */ |
1152 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
1153 | if (block->length < new_block->length) { | |
1154 | break; | |
1155 | } | |
1156 | } | |
1157 | if (block) { | |
1158 | QTAILQ_INSERT_BEFORE(block, new_block, next); | |
1159 | } else { | |
1160 | QTAILQ_INSERT_TAIL(&ram_list.blocks, new_block, next); | |
1161 | } | |
0d6d3c87 | 1162 | ram_list.mru_block = NULL; |
94a6b54f | 1163 | |
f798b07f | 1164 | ram_list.version++; |
b2a8658e | 1165 | qemu_mutex_unlock_ramlist(); |
f798b07f | 1166 | |
7267c094 | 1167 | ram_list.phys_dirty = g_realloc(ram_list.phys_dirty, |
04b16653 | 1168 | last_ram_offset() >> TARGET_PAGE_BITS); |
5fda043f IM |
1169 | memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), |
1170 | 0, size >> TARGET_PAGE_BITS); | |
1720aeee | 1171 | cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff); |
94a6b54f | 1172 | |
ddb97f1d | 1173 | qemu_ram_setup_dump(new_block->host, size); |
ad0b5321 | 1174 | qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE); |
ddb97f1d | 1175 | |
6f0437e8 JK |
1176 | if (kvm_enabled()) |
1177 | kvm_setup_guest_memory(new_block->host, size); | |
1178 | ||
94a6b54f PB |
1179 | return new_block->offset; |
1180 | } | |
e9a1ab19 | 1181 | |
c5705a77 | 1182 | ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) |
6977dfe6 | 1183 | { |
c5705a77 | 1184 | return qemu_ram_alloc_from_ptr(size, NULL, mr); |
6977dfe6 YT |
1185 | } |
1186 | ||
1f2e98b6 AW |
1187 | void qemu_ram_free_from_ptr(ram_addr_t addr) |
1188 | { | |
1189 | RAMBlock *block; | |
1190 | ||
b2a8658e UD |
1191 | /* This assumes the iothread lock is taken here too. */ |
1192 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1193 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
1f2e98b6 | 1194 | if (addr == block->offset) { |
a3161038 | 1195 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1196 | ram_list.mru_block = NULL; |
f798b07f | 1197 | ram_list.version++; |
7267c094 | 1198 | g_free(block); |
b2a8658e | 1199 | break; |
1f2e98b6 AW |
1200 | } |
1201 | } | |
b2a8658e | 1202 | qemu_mutex_unlock_ramlist(); |
1f2e98b6 AW |
1203 | } |
1204 | ||
c227f099 | 1205 | void qemu_ram_free(ram_addr_t addr) |
e9a1ab19 | 1206 | { |
04b16653 AW |
1207 | RAMBlock *block; |
1208 | ||
b2a8658e UD |
1209 | /* This assumes the iothread lock is taken here too. */ |
1210 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1211 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
04b16653 | 1212 | if (addr == block->offset) { |
a3161038 | 1213 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1214 | ram_list.mru_block = NULL; |
f798b07f | 1215 | ram_list.version++; |
cd19cfa2 HY |
1216 | if (block->flags & RAM_PREALLOC_MASK) { |
1217 | ; | |
1218 | } else if (mem_path) { | |
04b16653 AW |
1219 | #if defined (__linux__) && !defined(TARGET_S390X) |
1220 | if (block->fd) { | |
1221 | munmap(block->host, block->length); | |
1222 | close(block->fd); | |
1223 | } else { | |
e7a09b92 | 1224 | qemu_anon_ram_free(block->host, block->length); |
04b16653 | 1225 | } |
fd28aa13 JK |
1226 | #else |
1227 | abort(); | |
04b16653 AW |
1228 | #endif |
1229 | } else { | |
868bb33f | 1230 | if (xen_enabled()) { |
e41d7c69 | 1231 | xen_invalidate_map_cache_entry(block->host); |
432d268c | 1232 | } else { |
e7a09b92 | 1233 | qemu_anon_ram_free(block->host, block->length); |
432d268c | 1234 | } |
04b16653 | 1235 | } |
7267c094 | 1236 | g_free(block); |
b2a8658e | 1237 | break; |
04b16653 AW |
1238 | } |
1239 | } | |
b2a8658e | 1240 | qemu_mutex_unlock_ramlist(); |
04b16653 | 1241 | |
e9a1ab19 FB |
1242 | } |
1243 | ||
cd19cfa2 HY |
1244 | #ifndef _WIN32 |
1245 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) | |
1246 | { | |
1247 | RAMBlock *block; | |
1248 | ram_addr_t offset; | |
1249 | int flags; | |
1250 | void *area, *vaddr; | |
1251 | ||
a3161038 | 1252 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
cd19cfa2 HY |
1253 | offset = addr - block->offset; |
1254 | if (offset < block->length) { | |
1255 | vaddr = block->host + offset; | |
1256 | if (block->flags & RAM_PREALLOC_MASK) { | |
1257 | ; | |
1258 | } else { | |
1259 | flags = MAP_FIXED; | |
1260 | munmap(vaddr, length); | |
1261 | if (mem_path) { | |
1262 | #if defined(__linux__) && !defined(TARGET_S390X) | |
1263 | if (block->fd) { | |
1264 | #ifdef MAP_POPULATE | |
1265 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : | |
1266 | MAP_PRIVATE; | |
1267 | #else | |
1268 | flags |= MAP_PRIVATE; | |
1269 | #endif | |
1270 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1271 | flags, block->fd, offset); | |
1272 | } else { | |
1273 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
1274 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1275 | flags, -1, 0); | |
1276 | } | |
fd28aa13 JK |
1277 | #else |
1278 | abort(); | |
cd19cfa2 HY |
1279 | #endif |
1280 | } else { | |
1281 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
1282 | flags |= MAP_SHARED | MAP_ANONYMOUS; | |
1283 | area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE, | |
1284 | flags, -1, 0); | |
1285 | #else | |
1286 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
1287 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1288 | flags, -1, 0); | |
1289 | #endif | |
1290 | } | |
1291 | if (area != vaddr) { | |
f15fbc4b AP |
1292 | fprintf(stderr, "Could not remap addr: " |
1293 | RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n", | |
cd19cfa2 HY |
1294 | length, addr); |
1295 | exit(1); | |
1296 | } | |
8490fc78 | 1297 | memory_try_enable_merging(vaddr, length); |
ddb97f1d | 1298 | qemu_ram_setup_dump(vaddr, length); |
cd19cfa2 HY |
1299 | } |
1300 | return; | |
1301 | } | |
1302 | } | |
1303 | } | |
1304 | #endif /* !_WIN32 */ | |
1305 | ||
1b5ec234 | 1306 | static RAMBlock *qemu_get_ram_block(ram_addr_t addr) |
dc828ca1 | 1307 | { |
94a6b54f PB |
1308 | RAMBlock *block; |
1309 | ||
b2a8658e | 1310 | /* The list is protected by the iothread lock here. */ |
0d6d3c87 PB |
1311 | block = ram_list.mru_block; |
1312 | if (block && addr - block->offset < block->length) { | |
1313 | goto found; | |
1314 | } | |
a3161038 | 1315 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
f471a17e | 1316 | if (addr - block->offset < block->length) { |
0d6d3c87 | 1317 | goto found; |
f471a17e | 1318 | } |
94a6b54f | 1319 | } |
f471a17e AW |
1320 | |
1321 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1322 | abort(); | |
1323 | ||
0d6d3c87 PB |
1324 | found: |
1325 | ram_list.mru_block = block; | |
1b5ec234 PB |
1326 | return block; |
1327 | } | |
1328 | ||
1329 | /* Return a host pointer to ram allocated with qemu_ram_alloc. | |
1330 | With the exception of the softmmu code in this file, this should | |
1331 | only be used for local memory (e.g. video ram) that the device owns, | |
1332 | and knows it isn't going to access beyond the end of the block. | |
1333 | ||
1334 | It should not be used for general purpose DMA. | |
1335 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. | |
1336 | */ | |
1337 | void *qemu_get_ram_ptr(ram_addr_t addr) | |
1338 | { | |
1339 | RAMBlock *block = qemu_get_ram_block(addr); | |
1340 | ||
0d6d3c87 PB |
1341 | if (xen_enabled()) { |
1342 | /* We need to check if the requested address is in the RAM | |
1343 | * because we don't want to map the entire memory in QEMU. | |
1344 | * In that case just map until the end of the page. | |
1345 | */ | |
1346 | if (block->offset == 0) { | |
1347 | return xen_map_cache(addr, 0, 0); | |
1348 | } else if (block->host == NULL) { | |
1349 | block->host = | |
1350 | xen_map_cache(block->offset, block->length, 1); | |
1351 | } | |
1352 | } | |
1353 | return block->host + (addr - block->offset); | |
dc828ca1 PB |
1354 | } |
1355 | ||
0d6d3c87 PB |
1356 | /* Return a host pointer to ram allocated with qemu_ram_alloc. Same as |
1357 | * qemu_get_ram_ptr but do not touch ram_list.mru_block. | |
1358 | * | |
1359 | * ??? Is this still necessary? | |
b2e0a138 | 1360 | */ |
8b9c99d9 | 1361 | static void *qemu_safe_ram_ptr(ram_addr_t addr) |
b2e0a138 MT |
1362 | { |
1363 | RAMBlock *block; | |
1364 | ||
b2a8658e | 1365 | /* The list is protected by the iothread lock here. */ |
a3161038 | 1366 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
b2e0a138 | 1367 | if (addr - block->offset < block->length) { |
868bb33f | 1368 | if (xen_enabled()) { |
432d268c JN |
1369 | /* We need to check if the requested address is in the RAM |
1370 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 1371 | * In that case just map until the end of the page. |
432d268c JN |
1372 | */ |
1373 | if (block->offset == 0) { | |
e41d7c69 | 1374 | return xen_map_cache(addr, 0, 0); |
432d268c | 1375 | } else if (block->host == NULL) { |
e41d7c69 JK |
1376 | block->host = |
1377 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
1378 | } |
1379 | } | |
b2e0a138 MT |
1380 | return block->host + (addr - block->offset); |
1381 | } | |
1382 | } | |
1383 | ||
1384 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1385 | abort(); | |
1386 | ||
1387 | return NULL; | |
1388 | } | |
1389 | ||
38bee5dc SS |
1390 | /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr |
1391 | * but takes a size argument */ | |
8b9c99d9 | 1392 | static void *qemu_ram_ptr_length(ram_addr_t addr, ram_addr_t *size) |
38bee5dc | 1393 | { |
8ab934f9 SS |
1394 | if (*size == 0) { |
1395 | return NULL; | |
1396 | } | |
868bb33f | 1397 | if (xen_enabled()) { |
e41d7c69 | 1398 | return xen_map_cache(addr, *size, 1); |
868bb33f | 1399 | } else { |
38bee5dc SS |
1400 | RAMBlock *block; |
1401 | ||
a3161038 | 1402 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
38bee5dc SS |
1403 | if (addr - block->offset < block->length) { |
1404 | if (addr - block->offset + *size > block->length) | |
1405 | *size = block->length - addr + block->offset; | |
1406 | return block->host + (addr - block->offset); | |
1407 | } | |
1408 | } | |
1409 | ||
1410 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1411 | abort(); | |
38bee5dc SS |
1412 | } |
1413 | } | |
1414 | ||
7443b437 PB |
1415 | /* Some of the softmmu routines need to translate from a host pointer |
1416 | (typically a TLB entry) back to a ram offset. */ | |
1b5ec234 | 1417 | MemoryRegion *qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
5579c7f3 | 1418 | { |
94a6b54f PB |
1419 | RAMBlock *block; |
1420 | uint8_t *host = ptr; | |
1421 | ||
868bb33f | 1422 | if (xen_enabled()) { |
e41d7c69 | 1423 | *ram_addr = xen_ram_addr_from_mapcache(ptr); |
1b5ec234 | 1424 | return qemu_get_ram_block(*ram_addr)->mr; |
712c2b41 SS |
1425 | } |
1426 | ||
23887b79 PB |
1427 | block = ram_list.mru_block; |
1428 | if (block && block->host && host - block->host < block->length) { | |
1429 | goto found; | |
1430 | } | |
1431 | ||
a3161038 | 1432 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
432d268c JN |
1433 | /* This case append when the block is not mapped. */ |
1434 | if (block->host == NULL) { | |
1435 | continue; | |
1436 | } | |
f471a17e | 1437 | if (host - block->host < block->length) { |
23887b79 | 1438 | goto found; |
f471a17e | 1439 | } |
94a6b54f | 1440 | } |
432d268c | 1441 | |
1b5ec234 | 1442 | return NULL; |
23887b79 PB |
1443 | |
1444 | found: | |
1445 | *ram_addr = block->offset + (host - block->host); | |
1b5ec234 | 1446 | return block->mr; |
e890261f | 1447 | } |
f471a17e | 1448 | |
a8170e5e | 1449 | static void notdirty_mem_write(void *opaque, hwaddr ram_addr, |
0e0df1e2 | 1450 | uint64_t val, unsigned size) |
9fa3e853 | 1451 | { |
3a7d929e | 1452 | int dirty_flags; |
f7c11b53 | 1453 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 1454 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
0e0df1e2 | 1455 | tb_invalidate_phys_page_fast(ram_addr, size); |
f7c11b53 | 1456 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 1457 | } |
0e0df1e2 AK |
1458 | switch (size) { |
1459 | case 1: | |
1460 | stb_p(qemu_get_ram_ptr(ram_addr), val); | |
1461 | break; | |
1462 | case 2: | |
1463 | stw_p(qemu_get_ram_ptr(ram_addr), val); | |
1464 | break; | |
1465 | case 4: | |
1466 | stl_p(qemu_get_ram_ptr(ram_addr), val); | |
1467 | break; | |
1468 | default: | |
1469 | abort(); | |
3a7d929e | 1470 | } |
f23db169 | 1471 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
f7c11b53 | 1472 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
f23db169 FB |
1473 | /* we remove the notdirty callback only if the code has been |
1474 | flushed */ | |
1475 | if (dirty_flags == 0xff) | |
2e70f6ef | 1476 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
9fa3e853 FB |
1477 | } |
1478 | ||
b018ddf6 PB |
1479 | static bool notdirty_mem_accepts(void *opaque, hwaddr addr, |
1480 | unsigned size, bool is_write) | |
1481 | { | |
1482 | return is_write; | |
1483 | } | |
1484 | ||
0e0df1e2 | 1485 | static const MemoryRegionOps notdirty_mem_ops = { |
0e0df1e2 | 1486 | .write = notdirty_mem_write, |
b018ddf6 | 1487 | .valid.accepts = notdirty_mem_accepts, |
0e0df1e2 | 1488 | .endianness = DEVICE_NATIVE_ENDIAN, |
1ccde1cb FB |
1489 | }; |
1490 | ||
0f459d16 | 1491 | /* Generate a debug exception if a watchpoint has been hit. */ |
b4051334 | 1492 | static void check_watchpoint(int offset, int len_mask, int flags) |
0f459d16 | 1493 | { |
9349b4f9 | 1494 | CPUArchState *env = cpu_single_env; |
06d55cc1 | 1495 | target_ulong pc, cs_base; |
0f459d16 | 1496 | target_ulong vaddr; |
a1d1bb31 | 1497 | CPUWatchpoint *wp; |
06d55cc1 | 1498 | int cpu_flags; |
0f459d16 | 1499 | |
06d55cc1 AL |
1500 | if (env->watchpoint_hit) { |
1501 | /* We re-entered the check after replacing the TB. Now raise | |
1502 | * the debug interrupt so that is will trigger after the | |
1503 | * current instruction. */ | |
c3affe56 | 1504 | cpu_interrupt(ENV_GET_CPU(env), CPU_INTERRUPT_DEBUG); |
06d55cc1 AL |
1505 | return; |
1506 | } | |
2e70f6ef | 1507 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
72cf2d4f | 1508 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 AL |
1509 | if ((vaddr == (wp->vaddr & len_mask) || |
1510 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { | |
6e140f28 AL |
1511 | wp->flags |= BP_WATCHPOINT_HIT; |
1512 | if (!env->watchpoint_hit) { | |
1513 | env->watchpoint_hit = wp; | |
5a316526 | 1514 | tb_check_watchpoint(env); |
6e140f28 AL |
1515 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { |
1516 | env->exception_index = EXCP_DEBUG; | |
488d6577 | 1517 | cpu_loop_exit(env); |
6e140f28 AL |
1518 | } else { |
1519 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); | |
1520 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); | |
488d6577 | 1521 | cpu_resume_from_signal(env, NULL); |
6e140f28 | 1522 | } |
06d55cc1 | 1523 | } |
6e140f28 AL |
1524 | } else { |
1525 | wp->flags &= ~BP_WATCHPOINT_HIT; | |
0f459d16 PB |
1526 | } |
1527 | } | |
1528 | } | |
1529 | ||
6658ffb8 PB |
1530 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
1531 | so these check for a hit then pass through to the normal out-of-line | |
1532 | phys routines. */ | |
a8170e5e | 1533 | static uint64_t watch_mem_read(void *opaque, hwaddr addr, |
1ec9b909 | 1534 | unsigned size) |
6658ffb8 | 1535 | { |
1ec9b909 AK |
1536 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_READ); |
1537 | switch (size) { | |
1538 | case 1: return ldub_phys(addr); | |
1539 | case 2: return lduw_phys(addr); | |
1540 | case 4: return ldl_phys(addr); | |
1541 | default: abort(); | |
1542 | } | |
6658ffb8 PB |
1543 | } |
1544 | ||
a8170e5e | 1545 | static void watch_mem_write(void *opaque, hwaddr addr, |
1ec9b909 | 1546 | uint64_t val, unsigned size) |
6658ffb8 | 1547 | { |
1ec9b909 AK |
1548 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_WRITE); |
1549 | switch (size) { | |
67364150 MF |
1550 | case 1: |
1551 | stb_phys(addr, val); | |
1552 | break; | |
1553 | case 2: | |
1554 | stw_phys(addr, val); | |
1555 | break; | |
1556 | case 4: | |
1557 | stl_phys(addr, val); | |
1558 | break; | |
1ec9b909 AK |
1559 | default: abort(); |
1560 | } | |
6658ffb8 PB |
1561 | } |
1562 | ||
1ec9b909 AK |
1563 | static const MemoryRegionOps watch_mem_ops = { |
1564 | .read = watch_mem_read, | |
1565 | .write = watch_mem_write, | |
1566 | .endianness = DEVICE_NATIVE_ENDIAN, | |
6658ffb8 | 1567 | }; |
6658ffb8 | 1568 | |
a8170e5e | 1569 | static uint64_t subpage_read(void *opaque, hwaddr addr, |
70c68e44 | 1570 | unsigned len) |
db7b5426 | 1571 | { |
acc9d80b JK |
1572 | subpage_t *subpage = opaque; |
1573 | uint8_t buf[4]; | |
791af8c8 | 1574 | |
db7b5426 | 1575 | #if defined(DEBUG_SUBPAGE) |
acc9d80b JK |
1576 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx "\n", __func__, |
1577 | subpage, len, addr); | |
db7b5426 | 1578 | #endif |
acc9d80b JK |
1579 | address_space_read(subpage->as, addr + subpage->base, buf, len); |
1580 | switch (len) { | |
1581 | case 1: | |
1582 | return ldub_p(buf); | |
1583 | case 2: | |
1584 | return lduw_p(buf); | |
1585 | case 4: | |
1586 | return ldl_p(buf); | |
1587 | default: | |
1588 | abort(); | |
1589 | } | |
db7b5426 BS |
1590 | } |
1591 | ||
a8170e5e | 1592 | static void subpage_write(void *opaque, hwaddr addr, |
70c68e44 | 1593 | uint64_t value, unsigned len) |
db7b5426 | 1594 | { |
acc9d80b JK |
1595 | subpage_t *subpage = opaque; |
1596 | uint8_t buf[4]; | |
1597 | ||
db7b5426 | 1598 | #if defined(DEBUG_SUBPAGE) |
70c68e44 | 1599 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx |
acc9d80b JK |
1600 | " value %"PRIx64"\n", |
1601 | __func__, subpage, len, addr, value); | |
db7b5426 | 1602 | #endif |
acc9d80b JK |
1603 | switch (len) { |
1604 | case 1: | |
1605 | stb_p(buf, value); | |
1606 | break; | |
1607 | case 2: | |
1608 | stw_p(buf, value); | |
1609 | break; | |
1610 | case 4: | |
1611 | stl_p(buf, value); | |
1612 | break; | |
1613 | default: | |
1614 | abort(); | |
1615 | } | |
1616 | address_space_write(subpage->as, addr + subpage->base, buf, len); | |
db7b5426 BS |
1617 | } |
1618 | ||
c353e4cc PB |
1619 | static bool subpage_accepts(void *opaque, hwaddr addr, |
1620 | unsigned size, bool is_write) | |
1621 | { | |
acc9d80b | 1622 | subpage_t *subpage = opaque; |
c353e4cc | 1623 | #if defined(DEBUG_SUBPAGE) |
acc9d80b JK |
1624 | printf("%s: subpage %p %c len %d addr " TARGET_FMT_plx "\n", |
1625 | __func__, subpage, is_write ? 'w' : 'r', len, addr); | |
c353e4cc PB |
1626 | #endif |
1627 | ||
acc9d80b JK |
1628 | return address_space_access_valid(subpage->as, addr + subpage->base, |
1629 | size, is_write); | |
c353e4cc PB |
1630 | } |
1631 | ||
70c68e44 AK |
1632 | static const MemoryRegionOps subpage_ops = { |
1633 | .read = subpage_read, | |
1634 | .write = subpage_write, | |
c353e4cc | 1635 | .valid.accepts = subpage_accepts, |
70c68e44 | 1636 | .endianness = DEVICE_NATIVE_ENDIAN, |
db7b5426 BS |
1637 | }; |
1638 | ||
c227f099 | 1639 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 1640 | uint16_t section) |
db7b5426 BS |
1641 | { |
1642 | int idx, eidx; | |
1643 | ||
1644 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) | |
1645 | return -1; | |
1646 | idx = SUBPAGE_IDX(start); | |
1647 | eidx = SUBPAGE_IDX(end); | |
1648 | #if defined(DEBUG_SUBPAGE) | |
0bf9e31a | 1649 | printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, |
db7b5426 BS |
1650 | mmio, start, end, idx, eidx, memory); |
1651 | #endif | |
db7b5426 | 1652 | for (; idx <= eidx; idx++) { |
5312bd8b | 1653 | mmio->sub_section[idx] = section; |
db7b5426 BS |
1654 | } |
1655 | ||
1656 | return 0; | |
1657 | } | |
1658 | ||
acc9d80b | 1659 | static subpage_t *subpage_init(AddressSpace *as, hwaddr base) |
db7b5426 | 1660 | { |
c227f099 | 1661 | subpage_t *mmio; |
db7b5426 | 1662 | |
7267c094 | 1663 | mmio = g_malloc0(sizeof(subpage_t)); |
1eec614b | 1664 | |
acc9d80b | 1665 | mmio->as = as; |
1eec614b | 1666 | mmio->base = base; |
2c9b15ca | 1667 | memory_region_init_io(&mmio->iomem, NULL, &subpage_ops, mmio, |
70c68e44 | 1668 | "subpage", TARGET_PAGE_SIZE); |
b3b00c78 | 1669 | mmio->iomem.subpage = true; |
db7b5426 | 1670 | #if defined(DEBUG_SUBPAGE) |
1eec614b AL |
1671 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
1672 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); | |
db7b5426 | 1673 | #endif |
b41aac4f | 1674 | subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, PHYS_SECTION_UNASSIGNED); |
db7b5426 BS |
1675 | |
1676 | return mmio; | |
1677 | } | |
1678 | ||
5312bd8b AK |
1679 | static uint16_t dummy_section(MemoryRegion *mr) |
1680 | { | |
1681 | MemoryRegionSection section = { | |
1682 | .mr = mr, | |
1683 | .offset_within_address_space = 0, | |
1684 | .offset_within_region = 0, | |
052e87b0 | 1685 | .size = int128_2_64(), |
5312bd8b AK |
1686 | }; |
1687 | ||
1688 | return phys_section_add(§ion); | |
1689 | } | |
1690 | ||
a8170e5e | 1691 | MemoryRegion *iotlb_to_region(hwaddr index) |
aa102231 | 1692 | { |
0475d94f | 1693 | return address_space_memory.dispatch->sections[index & ~TARGET_PAGE_MASK].mr; |
aa102231 AK |
1694 | } |
1695 | ||
e9179ce1 AK |
1696 | static void io_mem_init(void) |
1697 | { | |
2c9b15ca PB |
1698 | memory_region_init_io(&io_mem_rom, NULL, &unassigned_mem_ops, NULL, "rom", UINT64_MAX); |
1699 | memory_region_init_io(&io_mem_unassigned, NULL, &unassigned_mem_ops, NULL, | |
0e0df1e2 | 1700 | "unassigned", UINT64_MAX); |
2c9b15ca | 1701 | memory_region_init_io(&io_mem_notdirty, NULL, ¬dirty_mem_ops, NULL, |
0e0df1e2 | 1702 | "notdirty", UINT64_MAX); |
2c9b15ca | 1703 | memory_region_init_io(&io_mem_watch, NULL, &watch_mem_ops, NULL, |
1ec9b909 | 1704 | "watch", UINT64_MAX); |
e9179ce1 AK |
1705 | } |
1706 | ||
ac1970fb | 1707 | static void mem_begin(MemoryListener *listener) |
00752703 PB |
1708 | { |
1709 | AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener); | |
1710 | AddressSpaceDispatch *d = g_new(AddressSpaceDispatch, 1); | |
1711 | ||
1712 | d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 }; | |
1713 | d->as = as; | |
1714 | as->next_dispatch = d; | |
1715 | } | |
1716 | ||
1717 | static void mem_commit(MemoryListener *listener) | |
ac1970fb | 1718 | { |
89ae337a | 1719 | AddressSpace *as = container_of(listener, AddressSpace, dispatch_listener); |
0475d94f PB |
1720 | AddressSpaceDispatch *cur = as->dispatch; |
1721 | AddressSpaceDispatch *next = as->next_dispatch; | |
1722 | ||
1723 | next->nodes = next_map.nodes; | |
1724 | next->sections = next_map.sections; | |
ac1970fb | 1725 | |
0475d94f PB |
1726 | as->dispatch = next; |
1727 | g_free(cur); | |
ac1970fb AK |
1728 | } |
1729 | ||
50c1e149 AK |
1730 | static void core_begin(MemoryListener *listener) |
1731 | { | |
b41aac4f LPF |
1732 | uint16_t n; |
1733 | ||
6092666e PB |
1734 | prev_map = g_new(PhysPageMap, 1); |
1735 | *prev_map = next_map; | |
1736 | ||
9affd6fc | 1737 | memset(&next_map, 0, sizeof(next_map)); |
b41aac4f LPF |
1738 | n = dummy_section(&io_mem_unassigned); |
1739 | assert(n == PHYS_SECTION_UNASSIGNED); | |
1740 | n = dummy_section(&io_mem_notdirty); | |
1741 | assert(n == PHYS_SECTION_NOTDIRTY); | |
1742 | n = dummy_section(&io_mem_rom); | |
1743 | assert(n == PHYS_SECTION_ROM); | |
1744 | n = dummy_section(&io_mem_watch); | |
1745 | assert(n == PHYS_SECTION_WATCH); | |
50c1e149 AK |
1746 | } |
1747 | ||
9affd6fc PB |
1748 | /* This listener's commit run after the other AddressSpaceDispatch listeners'. |
1749 | * All AddressSpaceDispatch instances have switched to the next map. | |
1750 | */ | |
1751 | static void core_commit(MemoryListener *listener) | |
1752 | { | |
6092666e | 1753 | phys_sections_free(prev_map); |
9affd6fc PB |
1754 | } |
1755 | ||
1d71148e | 1756 | static void tcg_commit(MemoryListener *listener) |
50c1e149 | 1757 | { |
9349b4f9 | 1758 | CPUArchState *env; |
117712c3 AK |
1759 | |
1760 | /* since each CPU stores ram addresses in its TLB cache, we must | |
1761 | reset the modified entries */ | |
1762 | /* XXX: slow ! */ | |
1763 | for(env = first_cpu; env != NULL; env = env->next_cpu) { | |
1764 | tlb_flush(env, 1); | |
1765 | } | |
50c1e149 AK |
1766 | } |
1767 | ||
93632747 AK |
1768 | static void core_log_global_start(MemoryListener *listener) |
1769 | { | |
1770 | cpu_physical_memory_set_dirty_tracking(1); | |
1771 | } | |
1772 | ||
1773 | static void core_log_global_stop(MemoryListener *listener) | |
1774 | { | |
1775 | cpu_physical_memory_set_dirty_tracking(0); | |
1776 | } | |
1777 | ||
93632747 | 1778 | static MemoryListener core_memory_listener = { |
50c1e149 | 1779 | .begin = core_begin, |
9affd6fc | 1780 | .commit = core_commit, |
93632747 AK |
1781 | .log_global_start = core_log_global_start, |
1782 | .log_global_stop = core_log_global_stop, | |
ac1970fb | 1783 | .priority = 1, |
93632747 AK |
1784 | }; |
1785 | ||
1d71148e AK |
1786 | static MemoryListener tcg_memory_listener = { |
1787 | .commit = tcg_commit, | |
1788 | }; | |
1789 | ||
ac1970fb AK |
1790 | void address_space_init_dispatch(AddressSpace *as) |
1791 | { | |
00752703 | 1792 | as->dispatch = NULL; |
89ae337a | 1793 | as->dispatch_listener = (MemoryListener) { |
ac1970fb | 1794 | .begin = mem_begin, |
00752703 | 1795 | .commit = mem_commit, |
ac1970fb AK |
1796 | .region_add = mem_add, |
1797 | .region_nop = mem_add, | |
1798 | .priority = 0, | |
1799 | }; | |
89ae337a | 1800 | memory_listener_register(&as->dispatch_listener, as); |
ac1970fb AK |
1801 | } |
1802 | ||
83f3c251 AK |
1803 | void address_space_destroy_dispatch(AddressSpace *as) |
1804 | { | |
1805 | AddressSpaceDispatch *d = as->dispatch; | |
1806 | ||
89ae337a | 1807 | memory_listener_unregister(&as->dispatch_listener); |
83f3c251 AK |
1808 | g_free(d); |
1809 | as->dispatch = NULL; | |
1810 | } | |
1811 | ||
62152b8a AK |
1812 | static void memory_map_init(void) |
1813 | { | |
7267c094 | 1814 | system_memory = g_malloc(sizeof(*system_memory)); |
2c9b15ca | 1815 | memory_region_init(system_memory, NULL, "system", INT64_MAX); |
7dca8043 | 1816 | address_space_init(&address_space_memory, system_memory, "memory"); |
309cb471 | 1817 | |
7267c094 | 1818 | system_io = g_malloc(sizeof(*system_io)); |
2c9b15ca | 1819 | memory_region_init(system_io, NULL, "io", 65536); |
7dca8043 | 1820 | address_space_init(&address_space_io, system_io, "I/O"); |
93632747 | 1821 | |
f6790af6 | 1822 | memory_listener_register(&core_memory_listener, &address_space_memory); |
f6790af6 | 1823 | memory_listener_register(&tcg_memory_listener, &address_space_memory); |
62152b8a AK |
1824 | } |
1825 | ||
1826 | MemoryRegion *get_system_memory(void) | |
1827 | { | |
1828 | return system_memory; | |
1829 | } | |
1830 | ||
309cb471 AK |
1831 | MemoryRegion *get_system_io(void) |
1832 | { | |
1833 | return system_io; | |
1834 | } | |
1835 | ||
e2eef170 PB |
1836 | #endif /* !defined(CONFIG_USER_ONLY) */ |
1837 | ||
13eb76e0 FB |
1838 | /* physical memory access (slow version, mainly for debug) */ |
1839 | #if defined(CONFIG_USER_ONLY) | |
9349b4f9 | 1840 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
a68fe89c | 1841 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
1842 | { |
1843 | int l, flags; | |
1844 | target_ulong page; | |
53a5960a | 1845 | void * p; |
13eb76e0 FB |
1846 | |
1847 | while (len > 0) { | |
1848 | page = addr & TARGET_PAGE_MASK; | |
1849 | l = (page + TARGET_PAGE_SIZE) - addr; | |
1850 | if (l > len) | |
1851 | l = len; | |
1852 | flags = page_get_flags(page); | |
1853 | if (!(flags & PAGE_VALID)) | |
a68fe89c | 1854 | return -1; |
13eb76e0 FB |
1855 | if (is_write) { |
1856 | if (!(flags & PAGE_WRITE)) | |
a68fe89c | 1857 | return -1; |
579a97f7 | 1858 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1859 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
a68fe89c | 1860 | return -1; |
72fb7daa AJ |
1861 | memcpy(p, buf, l); |
1862 | unlock_user(p, addr, l); | |
13eb76e0 FB |
1863 | } else { |
1864 | if (!(flags & PAGE_READ)) | |
a68fe89c | 1865 | return -1; |
579a97f7 | 1866 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1867 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
a68fe89c | 1868 | return -1; |
72fb7daa | 1869 | memcpy(buf, p, l); |
5b257578 | 1870 | unlock_user(p, addr, 0); |
13eb76e0 FB |
1871 | } |
1872 | len -= l; | |
1873 | buf += l; | |
1874 | addr += l; | |
1875 | } | |
a68fe89c | 1876 | return 0; |
13eb76e0 | 1877 | } |
8df1cd07 | 1878 | |
13eb76e0 | 1879 | #else |
51d7a9eb | 1880 | |
a8170e5e AK |
1881 | static void invalidate_and_set_dirty(hwaddr addr, |
1882 | hwaddr length) | |
51d7a9eb AP |
1883 | { |
1884 | if (!cpu_physical_memory_is_dirty(addr)) { | |
1885 | /* invalidate code */ | |
1886 | tb_invalidate_phys_page_range(addr, addr + length, 0); | |
1887 | /* set dirty bit */ | |
1888 | cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG)); | |
1889 | } | |
e226939d | 1890 | xen_modified_memory(addr, length); |
51d7a9eb AP |
1891 | } |
1892 | ||
2bbfa05d PB |
1893 | static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write) |
1894 | { | |
1895 | if (memory_region_is_ram(mr)) { | |
1896 | return !(is_write && mr->readonly); | |
1897 | } | |
1898 | if (memory_region_is_romd(mr)) { | |
1899 | return !is_write; | |
1900 | } | |
1901 | ||
1902 | return false; | |
1903 | } | |
1904 | ||
f52cc467 | 1905 | static inline int memory_access_size(MemoryRegion *mr, int l, hwaddr addr) |
82f2563f | 1906 | { |
f52cc467 | 1907 | if (l >= 4 && (((addr & 3) == 0 || mr->ops->impl.unaligned))) { |
82f2563f PB |
1908 | return 4; |
1909 | } | |
f52cc467 | 1910 | if (l >= 2 && (((addr & 1) == 0) || mr->ops->impl.unaligned)) { |
82f2563f PB |
1911 | return 2; |
1912 | } | |
1913 | return 1; | |
1914 | } | |
1915 | ||
fd8aaa76 | 1916 | bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf, |
ac1970fb | 1917 | int len, bool is_write) |
13eb76e0 | 1918 | { |
149f54b5 | 1919 | hwaddr l; |
13eb76e0 | 1920 | uint8_t *ptr; |
791af8c8 | 1921 | uint64_t val; |
149f54b5 | 1922 | hwaddr addr1; |
5c8a00ce | 1923 | MemoryRegion *mr; |
fd8aaa76 | 1924 | bool error = false; |
3b46e624 | 1925 | |
13eb76e0 | 1926 | while (len > 0) { |
149f54b5 | 1927 | l = len; |
5c8a00ce | 1928 | mr = address_space_translate(as, addr, &addr1, &l, is_write); |
3b46e624 | 1929 | |
13eb76e0 | 1930 | if (is_write) { |
5c8a00ce PB |
1931 | if (!memory_access_is_direct(mr, is_write)) { |
1932 | l = memory_access_size(mr, l, addr1); | |
6a00d601 FB |
1933 | /* XXX: could force cpu_single_env to NULL to avoid |
1934 | potential bugs */ | |
82f2563f | 1935 | if (l == 4) { |
1c213d19 | 1936 | /* 32 bit write access */ |
c27004ec | 1937 | val = ldl_p(buf); |
5c8a00ce | 1938 | error |= io_mem_write(mr, addr1, val, 4); |
82f2563f | 1939 | } else if (l == 2) { |
1c213d19 | 1940 | /* 16 bit write access */ |
c27004ec | 1941 | val = lduw_p(buf); |
5c8a00ce | 1942 | error |= io_mem_write(mr, addr1, val, 2); |
13eb76e0 | 1943 | } else { |
1c213d19 | 1944 | /* 8 bit write access */ |
c27004ec | 1945 | val = ldub_p(buf); |
5c8a00ce | 1946 | error |= io_mem_write(mr, addr1, val, 1); |
13eb76e0 | 1947 | } |
2bbfa05d | 1948 | } else { |
5c8a00ce | 1949 | addr1 += memory_region_get_ram_addr(mr); |
13eb76e0 | 1950 | /* RAM case */ |
5579c7f3 | 1951 | ptr = qemu_get_ram_ptr(addr1); |
13eb76e0 | 1952 | memcpy(ptr, buf, l); |
51d7a9eb | 1953 | invalidate_and_set_dirty(addr1, l); |
13eb76e0 FB |
1954 | } |
1955 | } else { | |
5c8a00ce | 1956 | if (!memory_access_is_direct(mr, is_write)) { |
13eb76e0 | 1957 | /* I/O case */ |
5c8a00ce | 1958 | l = memory_access_size(mr, l, addr1); |
82f2563f | 1959 | if (l == 4) { |
13eb76e0 | 1960 | /* 32 bit read access */ |
5c8a00ce | 1961 | error |= io_mem_read(mr, addr1, &val, 4); |
c27004ec | 1962 | stl_p(buf, val); |
82f2563f | 1963 | } else if (l == 2) { |
13eb76e0 | 1964 | /* 16 bit read access */ |
5c8a00ce | 1965 | error |= io_mem_read(mr, addr1, &val, 2); |
c27004ec | 1966 | stw_p(buf, val); |
13eb76e0 | 1967 | } else { |
1c213d19 | 1968 | /* 8 bit read access */ |
5c8a00ce | 1969 | error |= io_mem_read(mr, addr1, &val, 1); |
c27004ec | 1970 | stb_p(buf, val); |
13eb76e0 FB |
1971 | } |
1972 | } else { | |
1973 | /* RAM case */ | |
5c8a00ce | 1974 | ptr = qemu_get_ram_ptr(mr->ram_addr + addr1); |
f3705d53 | 1975 | memcpy(buf, ptr, l); |
13eb76e0 FB |
1976 | } |
1977 | } | |
1978 | len -= l; | |
1979 | buf += l; | |
1980 | addr += l; | |
1981 | } | |
fd8aaa76 PB |
1982 | |
1983 | return error; | |
13eb76e0 | 1984 | } |
8df1cd07 | 1985 | |
fd8aaa76 | 1986 | bool address_space_write(AddressSpace *as, hwaddr addr, |
ac1970fb AK |
1987 | const uint8_t *buf, int len) |
1988 | { | |
fd8aaa76 | 1989 | return address_space_rw(as, addr, (uint8_t *)buf, len, true); |
ac1970fb AK |
1990 | } |
1991 | ||
fd8aaa76 | 1992 | bool address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len) |
ac1970fb | 1993 | { |
fd8aaa76 | 1994 | return address_space_rw(as, addr, buf, len, false); |
ac1970fb AK |
1995 | } |
1996 | ||
1997 | ||
a8170e5e | 1998 | void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, |
ac1970fb AK |
1999 | int len, int is_write) |
2000 | { | |
fd8aaa76 | 2001 | address_space_rw(&address_space_memory, addr, buf, len, is_write); |
ac1970fb AK |
2002 | } |
2003 | ||
d0ecd2aa | 2004 | /* used for ROM loading : can write in RAM and ROM */ |
a8170e5e | 2005 | void cpu_physical_memory_write_rom(hwaddr addr, |
d0ecd2aa FB |
2006 | const uint8_t *buf, int len) |
2007 | { | |
149f54b5 | 2008 | hwaddr l; |
d0ecd2aa | 2009 | uint8_t *ptr; |
149f54b5 | 2010 | hwaddr addr1; |
5c8a00ce | 2011 | MemoryRegion *mr; |
3b46e624 | 2012 | |
d0ecd2aa | 2013 | while (len > 0) { |
149f54b5 | 2014 | l = len; |
5c8a00ce PB |
2015 | mr = address_space_translate(&address_space_memory, |
2016 | addr, &addr1, &l, true); | |
3b46e624 | 2017 | |
5c8a00ce PB |
2018 | if (!(memory_region_is_ram(mr) || |
2019 | memory_region_is_romd(mr))) { | |
d0ecd2aa FB |
2020 | /* do nothing */ |
2021 | } else { | |
5c8a00ce | 2022 | addr1 += memory_region_get_ram_addr(mr); |
d0ecd2aa | 2023 | /* ROM/RAM case */ |
5579c7f3 | 2024 | ptr = qemu_get_ram_ptr(addr1); |
d0ecd2aa | 2025 | memcpy(ptr, buf, l); |
51d7a9eb | 2026 | invalidate_and_set_dirty(addr1, l); |
d0ecd2aa FB |
2027 | } |
2028 | len -= l; | |
2029 | buf += l; | |
2030 | addr += l; | |
2031 | } | |
2032 | } | |
2033 | ||
6d16c2f8 | 2034 | typedef struct { |
d3e71559 | 2035 | MemoryRegion *mr; |
6d16c2f8 | 2036 | void *buffer; |
a8170e5e AK |
2037 | hwaddr addr; |
2038 | hwaddr len; | |
6d16c2f8 AL |
2039 | } BounceBuffer; |
2040 | ||
2041 | static BounceBuffer bounce; | |
2042 | ||
ba223c29 AL |
2043 | typedef struct MapClient { |
2044 | void *opaque; | |
2045 | void (*callback)(void *opaque); | |
72cf2d4f | 2046 | QLIST_ENTRY(MapClient) link; |
ba223c29 AL |
2047 | } MapClient; |
2048 | ||
72cf2d4f BS |
2049 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
2050 | = QLIST_HEAD_INITIALIZER(map_client_list); | |
ba223c29 AL |
2051 | |
2052 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) | |
2053 | { | |
7267c094 | 2054 | MapClient *client = g_malloc(sizeof(*client)); |
ba223c29 AL |
2055 | |
2056 | client->opaque = opaque; | |
2057 | client->callback = callback; | |
72cf2d4f | 2058 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
ba223c29 AL |
2059 | return client; |
2060 | } | |
2061 | ||
8b9c99d9 | 2062 | static void cpu_unregister_map_client(void *_client) |
ba223c29 AL |
2063 | { |
2064 | MapClient *client = (MapClient *)_client; | |
2065 | ||
72cf2d4f | 2066 | QLIST_REMOVE(client, link); |
7267c094 | 2067 | g_free(client); |
ba223c29 AL |
2068 | } |
2069 | ||
2070 | static void cpu_notify_map_clients(void) | |
2071 | { | |
2072 | MapClient *client; | |
2073 | ||
72cf2d4f BS |
2074 | while (!QLIST_EMPTY(&map_client_list)) { |
2075 | client = QLIST_FIRST(&map_client_list); | |
ba223c29 | 2076 | client->callback(client->opaque); |
34d5e948 | 2077 | cpu_unregister_map_client(client); |
ba223c29 AL |
2078 | } |
2079 | } | |
2080 | ||
51644ab7 PB |
2081 | bool address_space_access_valid(AddressSpace *as, hwaddr addr, int len, bool is_write) |
2082 | { | |
5c8a00ce | 2083 | MemoryRegion *mr; |
51644ab7 PB |
2084 | hwaddr l, xlat; |
2085 | ||
2086 | while (len > 0) { | |
2087 | l = len; | |
5c8a00ce PB |
2088 | mr = address_space_translate(as, addr, &xlat, &l, is_write); |
2089 | if (!memory_access_is_direct(mr, is_write)) { | |
2090 | l = memory_access_size(mr, l, addr); | |
2091 | if (!memory_region_access_valid(mr, xlat, l, is_write)) { | |
51644ab7 PB |
2092 | return false; |
2093 | } | |
2094 | } | |
2095 | ||
2096 | len -= l; | |
2097 | addr += l; | |
2098 | } | |
2099 | return true; | |
2100 | } | |
2101 | ||
6d16c2f8 AL |
2102 | /* Map a physical memory region into a host virtual address. |
2103 | * May map a subset of the requested range, given by and returned in *plen. | |
2104 | * May return NULL if resources needed to perform the mapping are exhausted. | |
2105 | * Use only for reads OR writes - not for read-modify-write operations. | |
ba223c29 AL |
2106 | * Use cpu_register_map_client() to know when retrying the map operation is |
2107 | * likely to succeed. | |
6d16c2f8 | 2108 | */ |
ac1970fb | 2109 | void *address_space_map(AddressSpace *as, |
a8170e5e AK |
2110 | hwaddr addr, |
2111 | hwaddr *plen, | |
ac1970fb | 2112 | bool is_write) |
6d16c2f8 | 2113 | { |
a8170e5e | 2114 | hwaddr len = *plen; |
e3127ae0 PB |
2115 | hwaddr done = 0; |
2116 | hwaddr l, xlat, base; | |
2117 | MemoryRegion *mr, *this_mr; | |
2118 | ram_addr_t raddr; | |
6d16c2f8 | 2119 | |
e3127ae0 PB |
2120 | if (len == 0) { |
2121 | return NULL; | |
2122 | } | |
38bee5dc | 2123 | |
e3127ae0 PB |
2124 | l = len; |
2125 | mr = address_space_translate(as, addr, &xlat, &l, is_write); | |
2126 | if (!memory_access_is_direct(mr, is_write)) { | |
2127 | if (bounce.buffer) { | |
2128 | return NULL; | |
6d16c2f8 | 2129 | } |
e3127ae0 PB |
2130 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); |
2131 | bounce.addr = addr; | |
2132 | bounce.len = l; | |
d3e71559 PB |
2133 | |
2134 | memory_region_ref(mr); | |
2135 | bounce.mr = mr; | |
e3127ae0 PB |
2136 | if (!is_write) { |
2137 | address_space_read(as, addr, bounce.buffer, l); | |
8ab934f9 | 2138 | } |
6d16c2f8 | 2139 | |
e3127ae0 PB |
2140 | *plen = l; |
2141 | return bounce.buffer; | |
2142 | } | |
2143 | ||
2144 | base = xlat; | |
2145 | raddr = memory_region_get_ram_addr(mr); | |
2146 | ||
2147 | for (;;) { | |
6d16c2f8 AL |
2148 | len -= l; |
2149 | addr += l; | |
e3127ae0 PB |
2150 | done += l; |
2151 | if (len == 0) { | |
2152 | break; | |
2153 | } | |
2154 | ||
2155 | l = len; | |
2156 | this_mr = address_space_translate(as, addr, &xlat, &l, is_write); | |
2157 | if (this_mr != mr || xlat != base + done) { | |
2158 | break; | |
2159 | } | |
6d16c2f8 | 2160 | } |
e3127ae0 | 2161 | |
d3e71559 | 2162 | memory_region_ref(mr); |
e3127ae0 PB |
2163 | *plen = done; |
2164 | return qemu_ram_ptr_length(raddr + base, plen); | |
6d16c2f8 AL |
2165 | } |
2166 | ||
ac1970fb | 2167 | /* Unmaps a memory region previously mapped by address_space_map(). |
6d16c2f8 AL |
2168 | * Will also mark the memory as dirty if is_write == 1. access_len gives |
2169 | * the amount of memory that was actually read or written by the caller. | |
2170 | */ | |
a8170e5e AK |
2171 | void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len, |
2172 | int is_write, hwaddr access_len) | |
6d16c2f8 AL |
2173 | { |
2174 | if (buffer != bounce.buffer) { | |
d3e71559 PB |
2175 | MemoryRegion *mr; |
2176 | ram_addr_t addr1; | |
2177 | ||
2178 | mr = qemu_ram_addr_from_host(buffer, &addr1); | |
2179 | assert(mr != NULL); | |
6d16c2f8 | 2180 | if (is_write) { |
6d16c2f8 AL |
2181 | while (access_len) { |
2182 | unsigned l; | |
2183 | l = TARGET_PAGE_SIZE; | |
2184 | if (l > access_len) | |
2185 | l = access_len; | |
51d7a9eb | 2186 | invalidate_and_set_dirty(addr1, l); |
6d16c2f8 AL |
2187 | addr1 += l; |
2188 | access_len -= l; | |
2189 | } | |
2190 | } | |
868bb33f | 2191 | if (xen_enabled()) { |
e41d7c69 | 2192 | xen_invalidate_map_cache_entry(buffer); |
050a0ddf | 2193 | } |
d3e71559 | 2194 | memory_region_unref(mr); |
6d16c2f8 AL |
2195 | return; |
2196 | } | |
2197 | if (is_write) { | |
ac1970fb | 2198 | address_space_write(as, bounce.addr, bounce.buffer, access_len); |
6d16c2f8 | 2199 | } |
f8a83245 | 2200 | qemu_vfree(bounce.buffer); |
6d16c2f8 | 2201 | bounce.buffer = NULL; |
d3e71559 | 2202 | memory_region_unref(bounce.mr); |
ba223c29 | 2203 | cpu_notify_map_clients(); |
6d16c2f8 | 2204 | } |
d0ecd2aa | 2205 | |
a8170e5e AK |
2206 | void *cpu_physical_memory_map(hwaddr addr, |
2207 | hwaddr *plen, | |
ac1970fb AK |
2208 | int is_write) |
2209 | { | |
2210 | return address_space_map(&address_space_memory, addr, plen, is_write); | |
2211 | } | |
2212 | ||
a8170e5e AK |
2213 | void cpu_physical_memory_unmap(void *buffer, hwaddr len, |
2214 | int is_write, hwaddr access_len) | |
ac1970fb AK |
2215 | { |
2216 | return address_space_unmap(&address_space_memory, buffer, len, is_write, access_len); | |
2217 | } | |
2218 | ||
8df1cd07 | 2219 | /* warning: addr must be aligned */ |
a8170e5e | 2220 | static inline uint32_t ldl_phys_internal(hwaddr addr, |
1e78bcc1 | 2221 | enum device_endian endian) |
8df1cd07 | 2222 | { |
8df1cd07 | 2223 | uint8_t *ptr; |
791af8c8 | 2224 | uint64_t val; |
5c8a00ce | 2225 | MemoryRegion *mr; |
149f54b5 PB |
2226 | hwaddr l = 4; |
2227 | hwaddr addr1; | |
8df1cd07 | 2228 | |
5c8a00ce PB |
2229 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2230 | false); | |
2231 | if (l < 4 || !memory_access_is_direct(mr, false)) { | |
8df1cd07 | 2232 | /* I/O case */ |
5c8a00ce | 2233 | io_mem_read(mr, addr1, &val, 4); |
1e78bcc1 AG |
2234 | #if defined(TARGET_WORDS_BIGENDIAN) |
2235 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2236 | val = bswap32(val); | |
2237 | } | |
2238 | #else | |
2239 | if (endian == DEVICE_BIG_ENDIAN) { | |
2240 | val = bswap32(val); | |
2241 | } | |
2242 | #endif | |
8df1cd07 FB |
2243 | } else { |
2244 | /* RAM case */ | |
5c8a00ce | 2245 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2246 | & TARGET_PAGE_MASK) |
149f54b5 | 2247 | + addr1); |
1e78bcc1 AG |
2248 | switch (endian) { |
2249 | case DEVICE_LITTLE_ENDIAN: | |
2250 | val = ldl_le_p(ptr); | |
2251 | break; | |
2252 | case DEVICE_BIG_ENDIAN: | |
2253 | val = ldl_be_p(ptr); | |
2254 | break; | |
2255 | default: | |
2256 | val = ldl_p(ptr); | |
2257 | break; | |
2258 | } | |
8df1cd07 FB |
2259 | } |
2260 | return val; | |
2261 | } | |
2262 | ||
a8170e5e | 2263 | uint32_t ldl_phys(hwaddr addr) |
1e78bcc1 AG |
2264 | { |
2265 | return ldl_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2266 | } | |
2267 | ||
a8170e5e | 2268 | uint32_t ldl_le_phys(hwaddr addr) |
1e78bcc1 AG |
2269 | { |
2270 | return ldl_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2271 | } | |
2272 | ||
a8170e5e | 2273 | uint32_t ldl_be_phys(hwaddr addr) |
1e78bcc1 AG |
2274 | { |
2275 | return ldl_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2276 | } | |
2277 | ||
84b7b8e7 | 2278 | /* warning: addr must be aligned */ |
a8170e5e | 2279 | static inline uint64_t ldq_phys_internal(hwaddr addr, |
1e78bcc1 | 2280 | enum device_endian endian) |
84b7b8e7 | 2281 | { |
84b7b8e7 FB |
2282 | uint8_t *ptr; |
2283 | uint64_t val; | |
5c8a00ce | 2284 | MemoryRegion *mr; |
149f54b5 PB |
2285 | hwaddr l = 8; |
2286 | hwaddr addr1; | |
84b7b8e7 | 2287 | |
5c8a00ce PB |
2288 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2289 | false); | |
2290 | if (l < 8 || !memory_access_is_direct(mr, false)) { | |
84b7b8e7 | 2291 | /* I/O case */ |
5c8a00ce | 2292 | io_mem_read(mr, addr1, &val, 8); |
968a5627 PB |
2293 | #if defined(TARGET_WORDS_BIGENDIAN) |
2294 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2295 | val = bswap64(val); | |
2296 | } | |
2297 | #else | |
2298 | if (endian == DEVICE_BIG_ENDIAN) { | |
2299 | val = bswap64(val); | |
2300 | } | |
84b7b8e7 FB |
2301 | #endif |
2302 | } else { | |
2303 | /* RAM case */ | |
5c8a00ce | 2304 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2305 | & TARGET_PAGE_MASK) |
149f54b5 | 2306 | + addr1); |
1e78bcc1 AG |
2307 | switch (endian) { |
2308 | case DEVICE_LITTLE_ENDIAN: | |
2309 | val = ldq_le_p(ptr); | |
2310 | break; | |
2311 | case DEVICE_BIG_ENDIAN: | |
2312 | val = ldq_be_p(ptr); | |
2313 | break; | |
2314 | default: | |
2315 | val = ldq_p(ptr); | |
2316 | break; | |
2317 | } | |
84b7b8e7 FB |
2318 | } |
2319 | return val; | |
2320 | } | |
2321 | ||
a8170e5e | 2322 | uint64_t ldq_phys(hwaddr addr) |
1e78bcc1 AG |
2323 | { |
2324 | return ldq_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2325 | } | |
2326 | ||
a8170e5e | 2327 | uint64_t ldq_le_phys(hwaddr addr) |
1e78bcc1 AG |
2328 | { |
2329 | return ldq_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2330 | } | |
2331 | ||
a8170e5e | 2332 | uint64_t ldq_be_phys(hwaddr addr) |
1e78bcc1 AG |
2333 | { |
2334 | return ldq_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2335 | } | |
2336 | ||
aab33094 | 2337 | /* XXX: optimize */ |
a8170e5e | 2338 | uint32_t ldub_phys(hwaddr addr) |
aab33094 FB |
2339 | { |
2340 | uint8_t val; | |
2341 | cpu_physical_memory_read(addr, &val, 1); | |
2342 | return val; | |
2343 | } | |
2344 | ||
733f0b02 | 2345 | /* warning: addr must be aligned */ |
a8170e5e | 2346 | static inline uint32_t lduw_phys_internal(hwaddr addr, |
1e78bcc1 | 2347 | enum device_endian endian) |
aab33094 | 2348 | { |
733f0b02 MT |
2349 | uint8_t *ptr; |
2350 | uint64_t val; | |
5c8a00ce | 2351 | MemoryRegion *mr; |
149f54b5 PB |
2352 | hwaddr l = 2; |
2353 | hwaddr addr1; | |
733f0b02 | 2354 | |
5c8a00ce PB |
2355 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2356 | false); | |
2357 | if (l < 2 || !memory_access_is_direct(mr, false)) { | |
733f0b02 | 2358 | /* I/O case */ |
5c8a00ce | 2359 | io_mem_read(mr, addr1, &val, 2); |
1e78bcc1 AG |
2360 | #if defined(TARGET_WORDS_BIGENDIAN) |
2361 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2362 | val = bswap16(val); | |
2363 | } | |
2364 | #else | |
2365 | if (endian == DEVICE_BIG_ENDIAN) { | |
2366 | val = bswap16(val); | |
2367 | } | |
2368 | #endif | |
733f0b02 MT |
2369 | } else { |
2370 | /* RAM case */ | |
5c8a00ce | 2371 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2372 | & TARGET_PAGE_MASK) |
149f54b5 | 2373 | + addr1); |
1e78bcc1 AG |
2374 | switch (endian) { |
2375 | case DEVICE_LITTLE_ENDIAN: | |
2376 | val = lduw_le_p(ptr); | |
2377 | break; | |
2378 | case DEVICE_BIG_ENDIAN: | |
2379 | val = lduw_be_p(ptr); | |
2380 | break; | |
2381 | default: | |
2382 | val = lduw_p(ptr); | |
2383 | break; | |
2384 | } | |
733f0b02 MT |
2385 | } |
2386 | return val; | |
aab33094 FB |
2387 | } |
2388 | ||
a8170e5e | 2389 | uint32_t lduw_phys(hwaddr addr) |
1e78bcc1 AG |
2390 | { |
2391 | return lduw_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2392 | } | |
2393 | ||
a8170e5e | 2394 | uint32_t lduw_le_phys(hwaddr addr) |
1e78bcc1 AG |
2395 | { |
2396 | return lduw_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2397 | } | |
2398 | ||
a8170e5e | 2399 | uint32_t lduw_be_phys(hwaddr addr) |
1e78bcc1 AG |
2400 | { |
2401 | return lduw_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2402 | } | |
2403 | ||
8df1cd07 FB |
2404 | /* warning: addr must be aligned. The ram page is not masked as dirty |
2405 | and the code inside is not invalidated. It is useful if the dirty | |
2406 | bits are used to track modified PTEs */ | |
a8170e5e | 2407 | void stl_phys_notdirty(hwaddr addr, uint32_t val) |
8df1cd07 | 2408 | { |
8df1cd07 | 2409 | uint8_t *ptr; |
5c8a00ce | 2410 | MemoryRegion *mr; |
149f54b5 PB |
2411 | hwaddr l = 4; |
2412 | hwaddr addr1; | |
8df1cd07 | 2413 | |
5c8a00ce PB |
2414 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2415 | true); | |
2416 | if (l < 4 || !memory_access_is_direct(mr, true)) { | |
2417 | io_mem_write(mr, addr1, val, 4); | |
8df1cd07 | 2418 | } else { |
5c8a00ce | 2419 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
5579c7f3 | 2420 | ptr = qemu_get_ram_ptr(addr1); |
8df1cd07 | 2421 | stl_p(ptr, val); |
74576198 AL |
2422 | |
2423 | if (unlikely(in_migration)) { | |
2424 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
2425 | /* invalidate code */ | |
2426 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
2427 | /* set dirty bit */ | |
f7c11b53 YT |
2428 | cpu_physical_memory_set_dirty_flags( |
2429 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
74576198 AL |
2430 | } |
2431 | } | |
8df1cd07 FB |
2432 | } |
2433 | } | |
2434 | ||
2435 | /* warning: addr must be aligned */ | |
a8170e5e | 2436 | static inline void stl_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 2437 | enum device_endian endian) |
8df1cd07 | 2438 | { |
8df1cd07 | 2439 | uint8_t *ptr; |
5c8a00ce | 2440 | MemoryRegion *mr; |
149f54b5 PB |
2441 | hwaddr l = 4; |
2442 | hwaddr addr1; | |
8df1cd07 | 2443 | |
5c8a00ce PB |
2444 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2445 | true); | |
2446 | if (l < 4 || !memory_access_is_direct(mr, true)) { | |
1e78bcc1 AG |
2447 | #if defined(TARGET_WORDS_BIGENDIAN) |
2448 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2449 | val = bswap32(val); | |
2450 | } | |
2451 | #else | |
2452 | if (endian == DEVICE_BIG_ENDIAN) { | |
2453 | val = bswap32(val); | |
2454 | } | |
2455 | #endif | |
5c8a00ce | 2456 | io_mem_write(mr, addr1, val, 4); |
8df1cd07 | 2457 | } else { |
8df1cd07 | 2458 | /* RAM case */ |
5c8a00ce | 2459 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
5579c7f3 | 2460 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
2461 | switch (endian) { |
2462 | case DEVICE_LITTLE_ENDIAN: | |
2463 | stl_le_p(ptr, val); | |
2464 | break; | |
2465 | case DEVICE_BIG_ENDIAN: | |
2466 | stl_be_p(ptr, val); | |
2467 | break; | |
2468 | default: | |
2469 | stl_p(ptr, val); | |
2470 | break; | |
2471 | } | |
51d7a9eb | 2472 | invalidate_and_set_dirty(addr1, 4); |
8df1cd07 FB |
2473 | } |
2474 | } | |
2475 | ||
a8170e5e | 2476 | void stl_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2477 | { |
2478 | stl_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
2479 | } | |
2480 | ||
a8170e5e | 2481 | void stl_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2482 | { |
2483 | stl_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
2484 | } | |
2485 | ||
a8170e5e | 2486 | void stl_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2487 | { |
2488 | stl_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
2489 | } | |
2490 | ||
aab33094 | 2491 | /* XXX: optimize */ |
a8170e5e | 2492 | void stb_phys(hwaddr addr, uint32_t val) |
aab33094 FB |
2493 | { |
2494 | uint8_t v = val; | |
2495 | cpu_physical_memory_write(addr, &v, 1); | |
2496 | } | |
2497 | ||
733f0b02 | 2498 | /* warning: addr must be aligned */ |
a8170e5e | 2499 | static inline void stw_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 2500 | enum device_endian endian) |
aab33094 | 2501 | { |
733f0b02 | 2502 | uint8_t *ptr; |
5c8a00ce | 2503 | MemoryRegion *mr; |
149f54b5 PB |
2504 | hwaddr l = 2; |
2505 | hwaddr addr1; | |
733f0b02 | 2506 | |
5c8a00ce PB |
2507 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2508 | true); | |
2509 | if (l < 2 || !memory_access_is_direct(mr, true)) { | |
1e78bcc1 AG |
2510 | #if defined(TARGET_WORDS_BIGENDIAN) |
2511 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2512 | val = bswap16(val); | |
2513 | } | |
2514 | #else | |
2515 | if (endian == DEVICE_BIG_ENDIAN) { | |
2516 | val = bswap16(val); | |
2517 | } | |
2518 | #endif | |
5c8a00ce | 2519 | io_mem_write(mr, addr1, val, 2); |
733f0b02 | 2520 | } else { |
733f0b02 | 2521 | /* RAM case */ |
5c8a00ce | 2522 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
733f0b02 | 2523 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
2524 | switch (endian) { |
2525 | case DEVICE_LITTLE_ENDIAN: | |
2526 | stw_le_p(ptr, val); | |
2527 | break; | |
2528 | case DEVICE_BIG_ENDIAN: | |
2529 | stw_be_p(ptr, val); | |
2530 | break; | |
2531 | default: | |
2532 | stw_p(ptr, val); | |
2533 | break; | |
2534 | } | |
51d7a9eb | 2535 | invalidate_and_set_dirty(addr1, 2); |
733f0b02 | 2536 | } |
aab33094 FB |
2537 | } |
2538 | ||
a8170e5e | 2539 | void stw_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2540 | { |
2541 | stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
2542 | } | |
2543 | ||
a8170e5e | 2544 | void stw_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2545 | { |
2546 | stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
2547 | } | |
2548 | ||
a8170e5e | 2549 | void stw_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2550 | { |
2551 | stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
2552 | } | |
2553 | ||
aab33094 | 2554 | /* XXX: optimize */ |
a8170e5e | 2555 | void stq_phys(hwaddr addr, uint64_t val) |
aab33094 FB |
2556 | { |
2557 | val = tswap64(val); | |
71d2b725 | 2558 | cpu_physical_memory_write(addr, &val, 8); |
aab33094 FB |
2559 | } |
2560 | ||
a8170e5e | 2561 | void stq_le_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2562 | { |
2563 | val = cpu_to_le64(val); | |
2564 | cpu_physical_memory_write(addr, &val, 8); | |
2565 | } | |
2566 | ||
a8170e5e | 2567 | void stq_be_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2568 | { |
2569 | val = cpu_to_be64(val); | |
2570 | cpu_physical_memory_write(addr, &val, 8); | |
2571 | } | |
2572 | ||
5e2972fd | 2573 | /* virtual memory access for debug (includes writing to ROM) */ |
9349b4f9 | 2574 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
b448f2f3 | 2575 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
2576 | { |
2577 | int l; | |
a8170e5e | 2578 | hwaddr phys_addr; |
9b3c35e0 | 2579 | target_ulong page; |
13eb76e0 FB |
2580 | |
2581 | while (len > 0) { | |
2582 | page = addr & TARGET_PAGE_MASK; | |
2583 | phys_addr = cpu_get_phys_page_debug(env, page); | |
2584 | /* if no physical page mapped, return an error */ | |
2585 | if (phys_addr == -1) | |
2586 | return -1; | |
2587 | l = (page + TARGET_PAGE_SIZE) - addr; | |
2588 | if (l > len) | |
2589 | l = len; | |
5e2972fd | 2590 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
5e2972fd AL |
2591 | if (is_write) |
2592 | cpu_physical_memory_write_rom(phys_addr, buf, l); | |
2593 | else | |
5e2972fd | 2594 | cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
13eb76e0 FB |
2595 | len -= l; |
2596 | buf += l; | |
2597 | addr += l; | |
2598 | } | |
2599 | return 0; | |
2600 | } | |
a68fe89c | 2601 | #endif |
13eb76e0 | 2602 | |
8e4a424b BS |
2603 | #if !defined(CONFIG_USER_ONLY) |
2604 | ||
2605 | /* | |
2606 | * A helper function for the _utterly broken_ virtio device model to find out if | |
2607 | * it's running on a big endian machine. Don't do this at home kids! | |
2608 | */ | |
2609 | bool virtio_is_big_endian(void); | |
2610 | bool virtio_is_big_endian(void) | |
2611 | { | |
2612 | #if defined(TARGET_WORDS_BIGENDIAN) | |
2613 | return true; | |
2614 | #else | |
2615 | return false; | |
2616 | #endif | |
2617 | } | |
2618 | ||
2619 | #endif | |
2620 | ||
76f35538 | 2621 | #ifndef CONFIG_USER_ONLY |
a8170e5e | 2622 | bool cpu_physical_memory_is_io(hwaddr phys_addr) |
76f35538 | 2623 | { |
5c8a00ce | 2624 | MemoryRegion*mr; |
149f54b5 | 2625 | hwaddr l = 1; |
76f35538 | 2626 | |
5c8a00ce PB |
2627 | mr = address_space_translate(&address_space_memory, |
2628 | phys_addr, &phys_addr, &l, false); | |
76f35538 | 2629 | |
5c8a00ce PB |
2630 | return !(memory_region_is_ram(mr) || |
2631 | memory_region_is_romd(mr)); | |
76f35538 | 2632 | } |
bd2fa51f MH |
2633 | |
2634 | void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque) | |
2635 | { | |
2636 | RAMBlock *block; | |
2637 | ||
2638 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
2639 | func(block->host, block->offset, block->length, opaque); | |
2640 | } | |
2641 | } | |
ec3f8c99 | 2642 | #endif |