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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 | ||
91 | struct AddressSpaceDispatch { | |
92 | /* This is a multi-level map on the physical address space. | |
93 | * The bottom level has pointers to MemoryRegionSections. | |
94 | */ | |
95 | PhysPageEntry phys_map; | |
96 | MemoryListener listener; | |
acc9d80b | 97 | AddressSpace *as; |
1db8abb1 PB |
98 | }; |
99 | ||
90260c6c JK |
100 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
101 | typedef struct subpage_t { | |
102 | MemoryRegion iomem; | |
acc9d80b | 103 | AddressSpace *as; |
90260c6c JK |
104 | hwaddr base; |
105 | uint16_t sub_section[TARGET_PAGE_SIZE]; | |
106 | } subpage_t; | |
107 | ||
5312bd8b AK |
108 | static MemoryRegionSection *phys_sections; |
109 | static unsigned phys_sections_nb, phys_sections_nb_alloc; | |
110 | static uint16_t phys_section_unassigned; | |
aa102231 AK |
111 | static uint16_t phys_section_notdirty; |
112 | static uint16_t phys_section_rom; | |
113 | static uint16_t phys_section_watch; | |
5312bd8b | 114 | |
d6f2ea22 AK |
115 | /* Simple allocator for PhysPageEntry nodes */ |
116 | static PhysPageEntry (*phys_map_nodes)[L2_SIZE]; | |
117 | static unsigned phys_map_nodes_nb, phys_map_nodes_nb_alloc; | |
118 | ||
07f07b31 | 119 | #define PHYS_MAP_NODE_NIL (((uint16_t)~0) >> 1) |
d6f2ea22 | 120 | |
e2eef170 | 121 | static void io_mem_init(void); |
62152b8a | 122 | static void memory_map_init(void); |
8b9c99d9 | 123 | static void *qemu_safe_ram_ptr(ram_addr_t addr); |
e2eef170 | 124 | |
1ec9b909 | 125 | static MemoryRegion io_mem_watch; |
6658ffb8 | 126 | #endif |
fd6ce8f6 | 127 | |
6d9a1304 | 128 | #if !defined(CONFIG_USER_ONLY) |
d6f2ea22 | 129 | |
f7bf5461 | 130 | static void phys_map_node_reserve(unsigned nodes) |
d6f2ea22 | 131 | { |
f7bf5461 | 132 | if (phys_map_nodes_nb + nodes > phys_map_nodes_nb_alloc) { |
d6f2ea22 AK |
133 | typedef PhysPageEntry Node[L2_SIZE]; |
134 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc * 2, 16); | |
f7bf5461 AK |
135 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc, |
136 | phys_map_nodes_nb + nodes); | |
d6f2ea22 AK |
137 | phys_map_nodes = g_renew(Node, phys_map_nodes, |
138 | phys_map_nodes_nb_alloc); | |
139 | } | |
f7bf5461 AK |
140 | } |
141 | ||
142 | static uint16_t phys_map_node_alloc(void) | |
143 | { | |
144 | unsigned i; | |
145 | uint16_t ret; | |
146 | ||
147 | ret = phys_map_nodes_nb++; | |
148 | assert(ret != PHYS_MAP_NODE_NIL); | |
149 | assert(ret != phys_map_nodes_nb_alloc); | |
d6f2ea22 | 150 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 151 | phys_map_nodes[ret][i].is_leaf = 0; |
c19e8800 | 152 | phys_map_nodes[ret][i].ptr = PHYS_MAP_NODE_NIL; |
d6f2ea22 | 153 | } |
f7bf5461 | 154 | return ret; |
d6f2ea22 AK |
155 | } |
156 | ||
157 | static void phys_map_nodes_reset(void) | |
158 | { | |
159 | phys_map_nodes_nb = 0; | |
160 | } | |
161 | ||
92e873b9 | 162 | |
a8170e5e AK |
163 | static void phys_page_set_level(PhysPageEntry *lp, hwaddr *index, |
164 | hwaddr *nb, uint16_t leaf, | |
2999097b | 165 | int level) |
f7bf5461 AK |
166 | { |
167 | PhysPageEntry *p; | |
168 | int i; | |
a8170e5e | 169 | hwaddr step = (hwaddr)1 << (level * L2_BITS); |
108c49b8 | 170 | |
07f07b31 | 171 | if (!lp->is_leaf && lp->ptr == PHYS_MAP_NODE_NIL) { |
c19e8800 AK |
172 | lp->ptr = phys_map_node_alloc(); |
173 | p = phys_map_nodes[lp->ptr]; | |
f7bf5461 AK |
174 | if (level == 0) { |
175 | for (i = 0; i < L2_SIZE; i++) { | |
07f07b31 | 176 | p[i].is_leaf = 1; |
c19e8800 | 177 | p[i].ptr = phys_section_unassigned; |
4346ae3e | 178 | } |
67c4d23c | 179 | } |
f7bf5461 | 180 | } else { |
c19e8800 | 181 | p = phys_map_nodes[lp->ptr]; |
92e873b9 | 182 | } |
2999097b | 183 | lp = &p[(*index >> (level * L2_BITS)) & (L2_SIZE - 1)]; |
f7bf5461 | 184 | |
2999097b | 185 | while (*nb && lp < &p[L2_SIZE]) { |
07f07b31 AK |
186 | if ((*index & (step - 1)) == 0 && *nb >= step) { |
187 | lp->is_leaf = true; | |
c19e8800 | 188 | lp->ptr = leaf; |
07f07b31 AK |
189 | *index += step; |
190 | *nb -= step; | |
2999097b AK |
191 | } else { |
192 | phys_page_set_level(lp, index, nb, leaf, level - 1); | |
193 | } | |
194 | ++lp; | |
f7bf5461 AK |
195 | } |
196 | } | |
197 | ||
ac1970fb | 198 | static void phys_page_set(AddressSpaceDispatch *d, |
a8170e5e | 199 | hwaddr index, hwaddr nb, |
2999097b | 200 | uint16_t leaf) |
f7bf5461 | 201 | { |
2999097b | 202 | /* Wildly overreserve - it doesn't matter much. */ |
07f07b31 | 203 | phys_map_node_reserve(3 * P_L2_LEVELS); |
5cd2c5b6 | 204 | |
ac1970fb | 205 | phys_page_set_level(&d->phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); |
92e873b9 FB |
206 | } |
207 | ||
149f54b5 | 208 | static MemoryRegionSection *phys_page_find(AddressSpaceDispatch *d, hwaddr index) |
92e873b9 | 209 | { |
ac1970fb | 210 | PhysPageEntry lp = d->phys_map; |
31ab2b4a AK |
211 | PhysPageEntry *p; |
212 | int i; | |
f1f6e3b8 | 213 | |
07f07b31 | 214 | for (i = P_L2_LEVELS - 1; i >= 0 && !lp.is_leaf; i--) { |
c19e8800 | 215 | if (lp.ptr == PHYS_MAP_NODE_NIL) { |
fd298934 | 216 | return &phys_sections[phys_section_unassigned]; |
31ab2b4a | 217 | } |
c19e8800 | 218 | p = phys_map_nodes[lp.ptr]; |
31ab2b4a | 219 | lp = p[(index >> (i * L2_BITS)) & (L2_SIZE - 1)]; |
5312bd8b | 220 | } |
fd298934 | 221 | return &phys_sections[lp.ptr]; |
f3705d53 AK |
222 | } |
223 | ||
e5548617 BS |
224 | bool memory_region_is_unassigned(MemoryRegion *mr) |
225 | { | |
2a8e7499 | 226 | return mr != &io_mem_rom && mr != &io_mem_notdirty && !mr->rom_device |
5b6dd868 | 227 | && mr != &io_mem_watch; |
fd6ce8f6 | 228 | } |
149f54b5 | 229 | |
9f029603 | 230 | static MemoryRegionSection *address_space_lookup_region(AddressSpace *as, |
90260c6c JK |
231 | hwaddr addr, |
232 | bool resolve_subpage) | |
9f029603 | 233 | { |
90260c6c JK |
234 | MemoryRegionSection *section; |
235 | subpage_t *subpage; | |
236 | ||
237 | section = phys_page_find(as->dispatch, addr >> TARGET_PAGE_BITS); | |
238 | if (resolve_subpage && section->mr->subpage) { | |
239 | subpage = container_of(section->mr, subpage_t, iomem); | |
240 | section = &phys_sections[subpage->sub_section[SUBPAGE_IDX(addr)]]; | |
241 | } | |
242 | return section; | |
9f029603 JK |
243 | } |
244 | ||
90260c6c JK |
245 | static MemoryRegionSection * |
246 | address_space_translate_internal(AddressSpace *as, hwaddr addr, hwaddr *xlat, | |
247 | hwaddr *plen, bool resolve_subpage) | |
149f54b5 PB |
248 | { |
249 | MemoryRegionSection *section; | |
250 | Int128 diff; | |
251 | ||
90260c6c | 252 | section = address_space_lookup_region(as, addr, resolve_subpage); |
149f54b5 PB |
253 | /* Compute offset within MemoryRegionSection */ |
254 | addr -= section->offset_within_address_space; | |
255 | ||
256 | /* Compute offset within MemoryRegion */ | |
257 | *xlat = addr + section->offset_within_region; | |
258 | ||
259 | diff = int128_sub(section->mr->size, int128_make64(addr)); | |
3752a036 | 260 | *plen = int128_get64(int128_min(diff, int128_make64(*plen))); |
149f54b5 PB |
261 | return section; |
262 | } | |
90260c6c | 263 | |
5c8a00ce PB |
264 | MemoryRegion *address_space_translate(AddressSpace *as, hwaddr addr, |
265 | hwaddr *xlat, hwaddr *plen, | |
266 | bool is_write) | |
90260c6c | 267 | { |
30951157 AK |
268 | IOMMUTLBEntry iotlb; |
269 | MemoryRegionSection *section; | |
270 | MemoryRegion *mr; | |
271 | hwaddr len = *plen; | |
272 | ||
273 | for (;;) { | |
274 | section = address_space_translate_internal(as, addr, &addr, plen, true); | |
275 | mr = section->mr; | |
276 | ||
277 | if (!mr->iommu_ops) { | |
278 | break; | |
279 | } | |
280 | ||
281 | iotlb = mr->iommu_ops->translate(mr, addr); | |
282 | addr = ((iotlb.translated_addr & ~iotlb.addr_mask) | |
283 | | (addr & iotlb.addr_mask)); | |
284 | len = MIN(len, (addr | iotlb.addr_mask) - addr + 1); | |
285 | if (!(iotlb.perm & (1 << is_write))) { | |
286 | mr = &io_mem_unassigned; | |
287 | break; | |
288 | } | |
289 | ||
290 | as = iotlb.target_as; | |
291 | } | |
292 | ||
293 | *plen = len; | |
294 | *xlat = addr; | |
295 | return mr; | |
90260c6c JK |
296 | } |
297 | ||
298 | MemoryRegionSection * | |
299 | address_space_translate_for_iotlb(AddressSpace *as, hwaddr addr, hwaddr *xlat, | |
300 | hwaddr *plen) | |
301 | { | |
30951157 AK |
302 | MemoryRegionSection *section; |
303 | section = address_space_translate_internal(as, addr, xlat, plen, false); | |
304 | ||
305 | assert(!section->mr->iommu_ops); | |
306 | return section; | |
90260c6c | 307 | } |
5b6dd868 | 308 | #endif |
fd6ce8f6 | 309 | |
5b6dd868 | 310 | void cpu_exec_init_all(void) |
fdbb84d1 | 311 | { |
5b6dd868 | 312 | #if !defined(CONFIG_USER_ONLY) |
b2a8658e | 313 | qemu_mutex_init(&ram_list.mutex); |
5b6dd868 BS |
314 | memory_map_init(); |
315 | io_mem_init(); | |
fdbb84d1 | 316 | #endif |
5b6dd868 | 317 | } |
fdbb84d1 | 318 | |
b170fce3 | 319 | #if !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
320 | |
321 | static int cpu_common_post_load(void *opaque, int version_id) | |
fd6ce8f6 | 322 | { |
259186a7 | 323 | CPUState *cpu = opaque; |
a513fe19 | 324 | |
5b6dd868 BS |
325 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
326 | version_id is increased. */ | |
259186a7 AF |
327 | cpu->interrupt_request &= ~0x01; |
328 | tlb_flush(cpu->env_ptr, 1); | |
5b6dd868 BS |
329 | |
330 | return 0; | |
a513fe19 | 331 | } |
7501267e | 332 | |
1a1562f5 | 333 | const VMStateDescription vmstate_cpu_common = { |
5b6dd868 BS |
334 | .name = "cpu_common", |
335 | .version_id = 1, | |
336 | .minimum_version_id = 1, | |
337 | .minimum_version_id_old = 1, | |
338 | .post_load = cpu_common_post_load, | |
339 | .fields = (VMStateField []) { | |
259186a7 AF |
340 | VMSTATE_UINT32(halted, CPUState), |
341 | VMSTATE_UINT32(interrupt_request, CPUState), | |
5b6dd868 BS |
342 | VMSTATE_END_OF_LIST() |
343 | } | |
344 | }; | |
1a1562f5 | 345 | |
5b6dd868 | 346 | #endif |
ea041c0e | 347 | |
38d8f5c8 | 348 | CPUState *qemu_get_cpu(int index) |
ea041c0e | 349 | { |
5b6dd868 | 350 | CPUArchState *env = first_cpu; |
38d8f5c8 | 351 | CPUState *cpu = NULL; |
ea041c0e | 352 | |
5b6dd868 | 353 | while (env) { |
55e5c285 AF |
354 | cpu = ENV_GET_CPU(env); |
355 | if (cpu->cpu_index == index) { | |
5b6dd868 | 356 | break; |
55e5c285 | 357 | } |
5b6dd868 | 358 | env = env->next_cpu; |
ea041c0e | 359 | } |
5b6dd868 | 360 | |
d76fddae | 361 | return env ? cpu : NULL; |
ea041c0e FB |
362 | } |
363 | ||
d6b9e0d6 MT |
364 | void qemu_for_each_cpu(void (*func)(CPUState *cpu, void *data), void *data) |
365 | { | |
366 | CPUArchState *env = first_cpu; | |
367 | ||
368 | while (env) { | |
369 | func(ENV_GET_CPU(env), data); | |
370 | env = env->next_cpu; | |
371 | } | |
372 | } | |
373 | ||
5b6dd868 | 374 | void cpu_exec_init(CPUArchState *env) |
ea041c0e | 375 | { |
5b6dd868 | 376 | CPUState *cpu = ENV_GET_CPU(env); |
b170fce3 | 377 | CPUClass *cc = CPU_GET_CLASS(cpu); |
5b6dd868 BS |
378 | CPUArchState **penv; |
379 | int cpu_index; | |
380 | ||
381 | #if defined(CONFIG_USER_ONLY) | |
382 | cpu_list_lock(); | |
383 | #endif | |
384 | env->next_cpu = NULL; | |
385 | penv = &first_cpu; | |
386 | cpu_index = 0; | |
387 | while (*penv != NULL) { | |
388 | penv = &(*penv)->next_cpu; | |
389 | cpu_index++; | |
390 | } | |
55e5c285 | 391 | cpu->cpu_index = cpu_index; |
1b1ed8dc | 392 | cpu->numa_node = 0; |
5b6dd868 BS |
393 | QTAILQ_INIT(&env->breakpoints); |
394 | QTAILQ_INIT(&env->watchpoints); | |
395 | #ifndef CONFIG_USER_ONLY | |
396 | cpu->thread_id = qemu_get_thread_id(); | |
397 | #endif | |
398 | *penv = env; | |
399 | #if defined(CONFIG_USER_ONLY) | |
400 | cpu_list_unlock(); | |
401 | #endif | |
259186a7 | 402 | vmstate_register(NULL, cpu_index, &vmstate_cpu_common, cpu); |
5b6dd868 | 403 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
404 | register_savevm(NULL, "cpu", cpu_index, CPU_SAVE_VERSION, |
405 | cpu_save, cpu_load, env); | |
b170fce3 | 406 | assert(cc->vmsd == NULL); |
5b6dd868 | 407 | #endif |
b170fce3 AF |
408 | if (cc->vmsd != NULL) { |
409 | vmstate_register(NULL, cpu_index, cc->vmsd, cpu); | |
410 | } | |
ea041c0e FB |
411 | } |
412 | ||
1fddef4b | 413 | #if defined(TARGET_HAS_ICE) |
94df27fd | 414 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 415 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
94df27fd PB |
416 | { |
417 | tb_invalidate_phys_page_range(pc, pc + 1, 0); | |
418 | } | |
419 | #else | |
1e7855a5 MF |
420 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
421 | { | |
9d70c4b7 MF |
422 | tb_invalidate_phys_addr(cpu_get_phys_page_debug(env, pc) | |
423 | (pc & ~TARGET_PAGE_MASK)); | |
1e7855a5 | 424 | } |
c27004ec | 425 | #endif |
94df27fd | 426 | #endif /* TARGET_HAS_ICE */ |
d720b93d | 427 | |
c527ee8f | 428 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 429 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
c527ee8f PB |
430 | |
431 | { | |
432 | } | |
433 | ||
9349b4f9 | 434 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
c527ee8f PB |
435 | int flags, CPUWatchpoint **watchpoint) |
436 | { | |
437 | return -ENOSYS; | |
438 | } | |
439 | #else | |
6658ffb8 | 440 | /* Add a watchpoint. */ |
9349b4f9 | 441 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 442 | int flags, CPUWatchpoint **watchpoint) |
6658ffb8 | 443 | { |
b4051334 | 444 | target_ulong len_mask = ~(len - 1); |
c0ce998e | 445 | CPUWatchpoint *wp; |
6658ffb8 | 446 | |
b4051334 | 447 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
0dc23828 MF |
448 | if ((len & (len - 1)) || (addr & ~len_mask) || |
449 | len == 0 || len > TARGET_PAGE_SIZE) { | |
b4051334 AL |
450 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " |
451 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); | |
452 | return -EINVAL; | |
453 | } | |
7267c094 | 454 | wp = g_malloc(sizeof(*wp)); |
a1d1bb31 AL |
455 | |
456 | wp->vaddr = addr; | |
b4051334 | 457 | wp->len_mask = len_mask; |
a1d1bb31 AL |
458 | wp->flags = flags; |
459 | ||
2dc9f411 | 460 | /* keep all GDB-injected watchpoints in front */ |
c0ce998e | 461 | if (flags & BP_GDB) |
72cf2d4f | 462 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
c0ce998e | 463 | else |
72cf2d4f | 464 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
6658ffb8 | 465 | |
6658ffb8 | 466 | tlb_flush_page(env, addr); |
a1d1bb31 AL |
467 | |
468 | if (watchpoint) | |
469 | *watchpoint = wp; | |
470 | return 0; | |
6658ffb8 PB |
471 | } |
472 | ||
a1d1bb31 | 473 | /* Remove a specific watchpoint. */ |
9349b4f9 | 474 | int cpu_watchpoint_remove(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 475 | int flags) |
6658ffb8 | 476 | { |
b4051334 | 477 | target_ulong len_mask = ~(len - 1); |
a1d1bb31 | 478 | CPUWatchpoint *wp; |
6658ffb8 | 479 | |
72cf2d4f | 480 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 | 481 | if (addr == wp->vaddr && len_mask == wp->len_mask |
6e140f28 | 482 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
a1d1bb31 | 483 | cpu_watchpoint_remove_by_ref(env, wp); |
6658ffb8 PB |
484 | return 0; |
485 | } | |
486 | } | |
a1d1bb31 | 487 | return -ENOENT; |
6658ffb8 PB |
488 | } |
489 | ||
a1d1bb31 | 490 | /* Remove a specific watchpoint by reference. */ |
9349b4f9 | 491 | void cpu_watchpoint_remove_by_ref(CPUArchState *env, CPUWatchpoint *watchpoint) |
a1d1bb31 | 492 | { |
72cf2d4f | 493 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
7d03f82f | 494 | |
a1d1bb31 AL |
495 | tlb_flush_page(env, watchpoint->vaddr); |
496 | ||
7267c094 | 497 | g_free(watchpoint); |
a1d1bb31 AL |
498 | } |
499 | ||
500 | /* Remove all matching watchpoints. */ | |
9349b4f9 | 501 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 | 502 | { |
c0ce998e | 503 | CPUWatchpoint *wp, *next; |
a1d1bb31 | 504 | |
72cf2d4f | 505 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
a1d1bb31 AL |
506 | if (wp->flags & mask) |
507 | cpu_watchpoint_remove_by_ref(env, wp); | |
c0ce998e | 508 | } |
7d03f82f | 509 | } |
c527ee8f | 510 | #endif |
7d03f82f | 511 | |
a1d1bb31 | 512 | /* Add a breakpoint. */ |
9349b4f9 | 513 | int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags, |
a1d1bb31 | 514 | CPUBreakpoint **breakpoint) |
4c3a88a2 | 515 | { |
1fddef4b | 516 | #if defined(TARGET_HAS_ICE) |
c0ce998e | 517 | CPUBreakpoint *bp; |
3b46e624 | 518 | |
7267c094 | 519 | bp = g_malloc(sizeof(*bp)); |
4c3a88a2 | 520 | |
a1d1bb31 AL |
521 | bp->pc = pc; |
522 | bp->flags = flags; | |
523 | ||
2dc9f411 | 524 | /* keep all GDB-injected breakpoints in front */ |
c0ce998e | 525 | if (flags & BP_GDB) |
72cf2d4f | 526 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
c0ce998e | 527 | else |
72cf2d4f | 528 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
3b46e624 | 529 | |
d720b93d | 530 | breakpoint_invalidate(env, pc); |
a1d1bb31 AL |
531 | |
532 | if (breakpoint) | |
533 | *breakpoint = bp; | |
4c3a88a2 FB |
534 | return 0; |
535 | #else | |
a1d1bb31 | 536 | return -ENOSYS; |
4c3a88a2 FB |
537 | #endif |
538 | } | |
539 | ||
a1d1bb31 | 540 | /* Remove a specific breakpoint. */ |
9349b4f9 | 541 | int cpu_breakpoint_remove(CPUArchState *env, target_ulong pc, int flags) |
a1d1bb31 | 542 | { |
7d03f82f | 543 | #if defined(TARGET_HAS_ICE) |
a1d1bb31 AL |
544 | CPUBreakpoint *bp; |
545 | ||
72cf2d4f | 546 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
a1d1bb31 AL |
547 | if (bp->pc == pc && bp->flags == flags) { |
548 | cpu_breakpoint_remove_by_ref(env, bp); | |
549 | return 0; | |
550 | } | |
7d03f82f | 551 | } |
a1d1bb31 AL |
552 | return -ENOENT; |
553 | #else | |
554 | return -ENOSYS; | |
7d03f82f EI |
555 | #endif |
556 | } | |
557 | ||
a1d1bb31 | 558 | /* Remove a specific breakpoint by reference. */ |
9349b4f9 | 559 | void cpu_breakpoint_remove_by_ref(CPUArchState *env, CPUBreakpoint *breakpoint) |
4c3a88a2 | 560 | { |
1fddef4b | 561 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 562 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
d720b93d | 563 | |
a1d1bb31 AL |
564 | breakpoint_invalidate(env, breakpoint->pc); |
565 | ||
7267c094 | 566 | g_free(breakpoint); |
a1d1bb31 AL |
567 | #endif |
568 | } | |
569 | ||
570 | /* Remove all matching breakpoints. */ | |
9349b4f9 | 571 | void cpu_breakpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 AL |
572 | { |
573 | #if defined(TARGET_HAS_ICE) | |
c0ce998e | 574 | CPUBreakpoint *bp, *next; |
a1d1bb31 | 575 | |
72cf2d4f | 576 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
a1d1bb31 AL |
577 | if (bp->flags & mask) |
578 | cpu_breakpoint_remove_by_ref(env, bp); | |
c0ce998e | 579 | } |
4c3a88a2 FB |
580 | #endif |
581 | } | |
582 | ||
c33a346e FB |
583 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
584 | CPU loop after each instruction */ | |
9349b4f9 | 585 | void cpu_single_step(CPUArchState *env, int enabled) |
c33a346e | 586 | { |
1fddef4b | 587 | #if defined(TARGET_HAS_ICE) |
c33a346e FB |
588 | if (env->singlestep_enabled != enabled) { |
589 | env->singlestep_enabled = enabled; | |
e22a25c9 AL |
590 | if (kvm_enabled()) |
591 | kvm_update_guest_debug(env, 0); | |
592 | else { | |
ccbb4d44 | 593 | /* must flush all the translated code to avoid inconsistencies */ |
e22a25c9 AL |
594 | /* XXX: only flush what is necessary */ |
595 | tb_flush(env); | |
596 | } | |
c33a346e FB |
597 | } |
598 | #endif | |
599 | } | |
600 | ||
9349b4f9 | 601 | void cpu_exit(CPUArchState *env) |
3098dba0 | 602 | { |
fcd7d003 AF |
603 | CPUState *cpu = ENV_GET_CPU(env); |
604 | ||
605 | cpu->exit_request = 1; | |
378df4b2 | 606 | cpu->tcg_exit_req = 1; |
3098dba0 AJ |
607 | } |
608 | ||
9349b4f9 | 609 | void cpu_abort(CPUArchState *env, const char *fmt, ...) |
7501267e FB |
610 | { |
611 | va_list ap; | |
493ae1f0 | 612 | va_list ap2; |
7501267e FB |
613 | |
614 | va_start(ap, fmt); | |
493ae1f0 | 615 | va_copy(ap2, ap); |
7501267e FB |
616 | fprintf(stderr, "qemu: fatal: "); |
617 | vfprintf(stderr, fmt, ap); | |
618 | fprintf(stderr, "\n"); | |
6fd2a026 | 619 | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
93fcfe39 AL |
620 | if (qemu_log_enabled()) { |
621 | qemu_log("qemu: fatal: "); | |
622 | qemu_log_vprintf(fmt, ap2); | |
623 | qemu_log("\n"); | |
6fd2a026 | 624 | log_cpu_state(env, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
31b1a7b4 | 625 | qemu_log_flush(); |
93fcfe39 | 626 | qemu_log_close(); |
924edcae | 627 | } |
493ae1f0 | 628 | va_end(ap2); |
f9373291 | 629 | va_end(ap); |
fd052bf6 RV |
630 | #if defined(CONFIG_USER_ONLY) |
631 | { | |
632 | struct sigaction act; | |
633 | sigfillset(&act.sa_mask); | |
634 | act.sa_handler = SIG_DFL; | |
635 | sigaction(SIGABRT, &act, NULL); | |
636 | } | |
637 | #endif | |
7501267e FB |
638 | abort(); |
639 | } | |
640 | ||
9349b4f9 | 641 | CPUArchState *cpu_copy(CPUArchState *env) |
c5be9f08 | 642 | { |
9349b4f9 AF |
643 | CPUArchState *new_env = cpu_init(env->cpu_model_str); |
644 | CPUArchState *next_cpu = new_env->next_cpu; | |
5a38f081 AL |
645 | #if defined(TARGET_HAS_ICE) |
646 | CPUBreakpoint *bp; | |
647 | CPUWatchpoint *wp; | |
648 | #endif | |
649 | ||
9349b4f9 | 650 | memcpy(new_env, env, sizeof(CPUArchState)); |
5a38f081 | 651 | |
55e5c285 | 652 | /* Preserve chaining. */ |
c5be9f08 | 653 | new_env->next_cpu = next_cpu; |
5a38f081 AL |
654 | |
655 | /* Clone all break/watchpoints. | |
656 | Note: Once we support ptrace with hw-debug register access, make sure | |
657 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
72cf2d4f BS |
658 | QTAILQ_INIT(&env->breakpoints); |
659 | QTAILQ_INIT(&env->watchpoints); | |
5a38f081 | 660 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 661 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
5a38f081 AL |
662 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
663 | } | |
72cf2d4f | 664 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
5a38f081 AL |
665 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
666 | wp->flags, NULL); | |
667 | } | |
668 | #endif | |
669 | ||
c5be9f08 TS |
670 | return new_env; |
671 | } | |
672 | ||
0124311e | 673 | #if !defined(CONFIG_USER_ONLY) |
d24981d3 JQ |
674 | static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end, |
675 | uintptr_t length) | |
676 | { | |
677 | uintptr_t start1; | |
678 | ||
679 | /* we modify the TLB cache so that the dirty bit will be set again | |
680 | when accessing the range */ | |
681 | start1 = (uintptr_t)qemu_safe_ram_ptr(start); | |
682 | /* Check that we don't span multiple blocks - this breaks the | |
683 | address comparisons below. */ | |
684 | if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1 | |
685 | != (end - 1) - start) { | |
686 | abort(); | |
687 | } | |
688 | cpu_tlb_reset_dirty_all(start1, length); | |
689 | ||
690 | } | |
691 | ||
5579c7f3 | 692 | /* Note: start and end must be within the same ram block. */ |
c227f099 | 693 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
0a962c02 | 694 | int dirty_flags) |
1ccde1cb | 695 | { |
d24981d3 | 696 | uintptr_t length; |
1ccde1cb FB |
697 | |
698 | start &= TARGET_PAGE_MASK; | |
699 | end = TARGET_PAGE_ALIGN(end); | |
700 | ||
701 | length = end - start; | |
702 | if (length == 0) | |
703 | return; | |
f7c11b53 | 704 | cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); |
f23db169 | 705 | |
d24981d3 JQ |
706 | if (tcg_enabled()) { |
707 | tlb_reset_dirty_range_all(start, end, length); | |
5579c7f3 | 708 | } |
1ccde1cb FB |
709 | } |
710 | ||
8b9c99d9 | 711 | static int cpu_physical_memory_set_dirty_tracking(int enable) |
74576198 | 712 | { |
f6f3fbca | 713 | int ret = 0; |
74576198 | 714 | in_migration = enable; |
f6f3fbca | 715 | return ret; |
74576198 AL |
716 | } |
717 | ||
a8170e5e | 718 | hwaddr memory_region_section_get_iotlb(CPUArchState *env, |
149f54b5 PB |
719 | MemoryRegionSection *section, |
720 | target_ulong vaddr, | |
721 | hwaddr paddr, hwaddr xlat, | |
722 | int prot, | |
723 | target_ulong *address) | |
e5548617 | 724 | { |
a8170e5e | 725 | hwaddr iotlb; |
e5548617 BS |
726 | CPUWatchpoint *wp; |
727 | ||
cc5bea60 | 728 | if (memory_region_is_ram(section->mr)) { |
e5548617 BS |
729 | /* Normal RAM. */ |
730 | iotlb = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) | |
149f54b5 | 731 | + xlat; |
e5548617 BS |
732 | if (!section->readonly) { |
733 | iotlb |= phys_section_notdirty; | |
734 | } else { | |
735 | iotlb |= phys_section_rom; | |
736 | } | |
737 | } else { | |
e5548617 | 738 | iotlb = section - phys_sections; |
149f54b5 | 739 | iotlb += xlat; |
e5548617 BS |
740 | } |
741 | ||
742 | /* Make accesses to pages with watchpoints go via the | |
743 | watchpoint trap routines. */ | |
744 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { | |
745 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { | |
746 | /* Avoid trapping reads of pages with a write breakpoint. */ | |
747 | if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) { | |
748 | iotlb = phys_section_watch + paddr; | |
749 | *address |= TLB_MMIO; | |
750 | break; | |
751 | } | |
752 | } | |
753 | } | |
754 | ||
755 | return iotlb; | |
756 | } | |
9fa3e853 FB |
757 | #endif /* defined(CONFIG_USER_ONLY) */ |
758 | ||
e2eef170 | 759 | #if !defined(CONFIG_USER_ONLY) |
8da3ff18 | 760 | |
c227f099 | 761 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 762 | uint16_t section); |
acc9d80b | 763 | static subpage_t *subpage_init(AddressSpace *as, hwaddr base); |
5312bd8b | 764 | static void destroy_page_desc(uint16_t section_index) |
54688b1e | 765 | { |
5312bd8b AK |
766 | MemoryRegionSection *section = &phys_sections[section_index]; |
767 | MemoryRegion *mr = section->mr; | |
54688b1e AK |
768 | |
769 | if (mr->subpage) { | |
770 | subpage_t *subpage = container_of(mr, subpage_t, iomem); | |
771 | memory_region_destroy(&subpage->iomem); | |
772 | g_free(subpage); | |
773 | } | |
774 | } | |
775 | ||
4346ae3e | 776 | static void destroy_l2_mapping(PhysPageEntry *lp, unsigned level) |
54688b1e AK |
777 | { |
778 | unsigned i; | |
d6f2ea22 | 779 | PhysPageEntry *p; |
54688b1e | 780 | |
c19e8800 | 781 | if (lp->ptr == PHYS_MAP_NODE_NIL) { |
54688b1e AK |
782 | return; |
783 | } | |
784 | ||
c19e8800 | 785 | p = phys_map_nodes[lp->ptr]; |
4346ae3e | 786 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 787 | if (!p[i].is_leaf) { |
54688b1e | 788 | destroy_l2_mapping(&p[i], level - 1); |
4346ae3e | 789 | } else { |
c19e8800 | 790 | destroy_page_desc(p[i].ptr); |
54688b1e | 791 | } |
54688b1e | 792 | } |
07f07b31 | 793 | lp->is_leaf = 0; |
c19e8800 | 794 | lp->ptr = PHYS_MAP_NODE_NIL; |
54688b1e AK |
795 | } |
796 | ||
ac1970fb | 797 | static void destroy_all_mappings(AddressSpaceDispatch *d) |
54688b1e | 798 | { |
ac1970fb | 799 | destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1); |
d6f2ea22 | 800 | phys_map_nodes_reset(); |
54688b1e AK |
801 | } |
802 | ||
5312bd8b AK |
803 | static uint16_t phys_section_add(MemoryRegionSection *section) |
804 | { | |
68f3f65b PB |
805 | /* The physical section number is ORed with a page-aligned |
806 | * pointer to produce the iotlb entries. Thus it should | |
807 | * never overflow into the page-aligned value. | |
808 | */ | |
809 | assert(phys_sections_nb < TARGET_PAGE_SIZE); | |
810 | ||
5312bd8b AK |
811 | if (phys_sections_nb == phys_sections_nb_alloc) { |
812 | phys_sections_nb_alloc = MAX(phys_sections_nb_alloc * 2, 16); | |
813 | phys_sections = g_renew(MemoryRegionSection, phys_sections, | |
814 | phys_sections_nb_alloc); | |
815 | } | |
816 | phys_sections[phys_sections_nb] = *section; | |
817 | return phys_sections_nb++; | |
818 | } | |
819 | ||
820 | static void phys_sections_clear(void) | |
821 | { | |
822 | phys_sections_nb = 0; | |
823 | } | |
824 | ||
ac1970fb | 825 | static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *section) |
0f0cb164 AK |
826 | { |
827 | subpage_t *subpage; | |
a8170e5e | 828 | hwaddr base = section->offset_within_address_space |
0f0cb164 | 829 | & TARGET_PAGE_MASK; |
ac1970fb | 830 | MemoryRegionSection *existing = phys_page_find(d, base >> TARGET_PAGE_BITS); |
0f0cb164 AK |
831 | MemoryRegionSection subsection = { |
832 | .offset_within_address_space = base, | |
052e87b0 | 833 | .size = int128_make64(TARGET_PAGE_SIZE), |
0f0cb164 | 834 | }; |
a8170e5e | 835 | hwaddr start, end; |
0f0cb164 | 836 | |
f3705d53 | 837 | assert(existing->mr->subpage || existing->mr == &io_mem_unassigned); |
0f0cb164 | 838 | |
f3705d53 | 839 | if (!(existing->mr->subpage)) { |
acc9d80b | 840 | subpage = subpage_init(d->as, base); |
0f0cb164 | 841 | subsection.mr = &subpage->iomem; |
ac1970fb | 842 | phys_page_set(d, base >> TARGET_PAGE_BITS, 1, |
2999097b | 843 | phys_section_add(&subsection)); |
0f0cb164 | 844 | } else { |
f3705d53 | 845 | subpage = container_of(existing->mr, subpage_t, iomem); |
0f0cb164 AK |
846 | } |
847 | start = section->offset_within_address_space & ~TARGET_PAGE_MASK; | |
052e87b0 | 848 | end = start + int128_get64(section->size) - 1; |
0f0cb164 AK |
849 | subpage_register(subpage, start, end, phys_section_add(section)); |
850 | } | |
851 | ||
852 | ||
052e87b0 PB |
853 | static void register_multipage(AddressSpaceDispatch *d, |
854 | MemoryRegionSection *section) | |
33417e70 | 855 | { |
a8170e5e | 856 | hwaddr start_addr = section->offset_within_address_space; |
5312bd8b | 857 | uint16_t section_index = phys_section_add(section); |
052e87b0 PB |
858 | uint64_t num_pages = int128_get64(int128_rshift(section->size, |
859 | TARGET_PAGE_BITS)); | |
dd81124b | 860 | |
733d5ef5 PB |
861 | assert(num_pages); |
862 | phys_page_set(d, start_addr >> TARGET_PAGE_BITS, num_pages, section_index); | |
33417e70 FB |
863 | } |
864 | ||
ac1970fb | 865 | static void mem_add(MemoryListener *listener, MemoryRegionSection *section) |
0f0cb164 | 866 | { |
ac1970fb | 867 | AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); |
99b9cc06 | 868 | MemoryRegionSection now = *section, remain = *section; |
052e87b0 | 869 | Int128 page_size = int128_make64(TARGET_PAGE_SIZE); |
0f0cb164 | 870 | |
733d5ef5 PB |
871 | if (now.offset_within_address_space & ~TARGET_PAGE_MASK) { |
872 | uint64_t left = TARGET_PAGE_ALIGN(now.offset_within_address_space) | |
873 | - now.offset_within_address_space; | |
874 | ||
052e87b0 | 875 | now.size = int128_min(int128_make64(left), now.size); |
ac1970fb | 876 | register_subpage(d, &now); |
733d5ef5 | 877 | } else { |
052e87b0 | 878 | now.size = int128_zero(); |
733d5ef5 | 879 | } |
052e87b0 PB |
880 | while (int128_ne(remain.size, now.size)) { |
881 | remain.size = int128_sub(remain.size, now.size); | |
882 | remain.offset_within_address_space += int128_get64(now.size); | |
883 | remain.offset_within_region += int128_get64(now.size); | |
69b67646 | 884 | now = remain; |
052e87b0 | 885 | if (int128_lt(remain.size, page_size)) { |
733d5ef5 PB |
886 | register_subpage(d, &now); |
887 | } else if (remain.offset_within_region & ~TARGET_PAGE_MASK) { | |
052e87b0 | 888 | now.size = page_size; |
ac1970fb | 889 | register_subpage(d, &now); |
69b67646 | 890 | } else { |
052e87b0 | 891 | now.size = int128_and(now.size, int128_neg(page_size)); |
ac1970fb | 892 | register_multipage(d, &now); |
69b67646 | 893 | } |
0f0cb164 AK |
894 | } |
895 | } | |
896 | ||
62a2744c SY |
897 | void qemu_flush_coalesced_mmio_buffer(void) |
898 | { | |
899 | if (kvm_enabled()) | |
900 | kvm_flush_coalesced_mmio_buffer(); | |
901 | } | |
902 | ||
b2a8658e UD |
903 | void qemu_mutex_lock_ramlist(void) |
904 | { | |
905 | qemu_mutex_lock(&ram_list.mutex); | |
906 | } | |
907 | ||
908 | void qemu_mutex_unlock_ramlist(void) | |
909 | { | |
910 | qemu_mutex_unlock(&ram_list.mutex); | |
911 | } | |
912 | ||
c902760f MT |
913 | #if defined(__linux__) && !defined(TARGET_S390X) |
914 | ||
915 | #include <sys/vfs.h> | |
916 | ||
917 | #define HUGETLBFS_MAGIC 0x958458f6 | |
918 | ||
919 | static long gethugepagesize(const char *path) | |
920 | { | |
921 | struct statfs fs; | |
922 | int ret; | |
923 | ||
924 | do { | |
9742bf26 | 925 | ret = statfs(path, &fs); |
c902760f MT |
926 | } while (ret != 0 && errno == EINTR); |
927 | ||
928 | if (ret != 0) { | |
9742bf26 YT |
929 | perror(path); |
930 | return 0; | |
c902760f MT |
931 | } |
932 | ||
933 | if (fs.f_type != HUGETLBFS_MAGIC) | |
9742bf26 | 934 | fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path); |
c902760f MT |
935 | |
936 | return fs.f_bsize; | |
937 | } | |
938 | ||
04b16653 AW |
939 | static void *file_ram_alloc(RAMBlock *block, |
940 | ram_addr_t memory, | |
941 | const char *path) | |
c902760f MT |
942 | { |
943 | char *filename; | |
8ca761f6 PF |
944 | char *sanitized_name; |
945 | char *c; | |
c902760f MT |
946 | void *area; |
947 | int fd; | |
948 | #ifdef MAP_POPULATE | |
949 | int flags; | |
950 | #endif | |
951 | unsigned long hpagesize; | |
952 | ||
953 | hpagesize = gethugepagesize(path); | |
954 | if (!hpagesize) { | |
9742bf26 | 955 | return NULL; |
c902760f MT |
956 | } |
957 | ||
958 | if (memory < hpagesize) { | |
959 | return NULL; | |
960 | } | |
961 | ||
962 | if (kvm_enabled() && !kvm_has_sync_mmu()) { | |
963 | fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n"); | |
964 | return NULL; | |
965 | } | |
966 | ||
8ca761f6 PF |
967 | /* Make name safe to use with mkstemp by replacing '/' with '_'. */ |
968 | sanitized_name = g_strdup(block->mr->name); | |
969 | for (c = sanitized_name; *c != '\0'; c++) { | |
970 | if (*c == '/') | |
971 | *c = '_'; | |
972 | } | |
973 | ||
974 | filename = g_strdup_printf("%s/qemu_back_mem.%s.XXXXXX", path, | |
975 | sanitized_name); | |
976 | g_free(sanitized_name); | |
c902760f MT |
977 | |
978 | fd = mkstemp(filename); | |
979 | if (fd < 0) { | |
9742bf26 | 980 | perror("unable to create backing store for hugepages"); |
e4ada482 | 981 | g_free(filename); |
9742bf26 | 982 | return NULL; |
c902760f MT |
983 | } |
984 | unlink(filename); | |
e4ada482 | 985 | g_free(filename); |
c902760f MT |
986 | |
987 | memory = (memory+hpagesize-1) & ~(hpagesize-1); | |
988 | ||
989 | /* | |
990 | * ftruncate is not supported by hugetlbfs in older | |
991 | * hosts, so don't bother bailing out on errors. | |
992 | * If anything goes wrong with it under other filesystems, | |
993 | * mmap will fail. | |
994 | */ | |
995 | if (ftruncate(fd, memory)) | |
9742bf26 | 996 | perror("ftruncate"); |
c902760f MT |
997 | |
998 | #ifdef MAP_POPULATE | |
999 | /* NB: MAP_POPULATE won't exhaustively alloc all phys pages in the case | |
1000 | * MAP_PRIVATE is requested. For mem_prealloc we mmap as MAP_SHARED | |
1001 | * to sidestep this quirk. | |
1002 | */ | |
1003 | flags = mem_prealloc ? MAP_POPULATE | MAP_SHARED : MAP_PRIVATE; | |
1004 | area = mmap(0, memory, PROT_READ | PROT_WRITE, flags, fd, 0); | |
1005 | #else | |
1006 | area = mmap(0, memory, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); | |
1007 | #endif | |
1008 | if (area == MAP_FAILED) { | |
9742bf26 YT |
1009 | perror("file_ram_alloc: can't mmap RAM pages"); |
1010 | close(fd); | |
1011 | return (NULL); | |
c902760f | 1012 | } |
04b16653 | 1013 | block->fd = fd; |
c902760f MT |
1014 | return area; |
1015 | } | |
1016 | #endif | |
1017 | ||
d17b5288 | 1018 | static ram_addr_t find_ram_offset(ram_addr_t size) |
04b16653 AW |
1019 | { |
1020 | RAMBlock *block, *next_block; | |
3e837b2c | 1021 | ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX; |
04b16653 | 1022 | |
49cd9ac6 SH |
1023 | assert(size != 0); /* it would hand out same offset multiple times */ |
1024 | ||
a3161038 | 1025 | if (QTAILQ_EMPTY(&ram_list.blocks)) |
04b16653 AW |
1026 | return 0; |
1027 | ||
a3161038 | 1028 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
f15fbc4b | 1029 | ram_addr_t end, next = RAM_ADDR_MAX; |
04b16653 AW |
1030 | |
1031 | end = block->offset + block->length; | |
1032 | ||
a3161038 | 1033 | QTAILQ_FOREACH(next_block, &ram_list.blocks, next) { |
04b16653 AW |
1034 | if (next_block->offset >= end) { |
1035 | next = MIN(next, next_block->offset); | |
1036 | } | |
1037 | } | |
1038 | if (next - end >= size && next - end < mingap) { | |
3e837b2c | 1039 | offset = end; |
04b16653 AW |
1040 | mingap = next - end; |
1041 | } | |
1042 | } | |
3e837b2c AW |
1043 | |
1044 | if (offset == RAM_ADDR_MAX) { | |
1045 | fprintf(stderr, "Failed to find gap of requested size: %" PRIu64 "\n", | |
1046 | (uint64_t)size); | |
1047 | abort(); | |
1048 | } | |
1049 | ||
04b16653 AW |
1050 | return offset; |
1051 | } | |
1052 | ||
652d7ec2 | 1053 | ram_addr_t last_ram_offset(void) |
d17b5288 AW |
1054 | { |
1055 | RAMBlock *block; | |
1056 | ram_addr_t last = 0; | |
1057 | ||
a3161038 | 1058 | QTAILQ_FOREACH(block, &ram_list.blocks, next) |
d17b5288 AW |
1059 | last = MAX(last, block->offset + block->length); |
1060 | ||
1061 | return last; | |
1062 | } | |
1063 | ||
ddb97f1d JB |
1064 | static void qemu_ram_setup_dump(void *addr, ram_addr_t size) |
1065 | { | |
1066 | int ret; | |
1067 | QemuOpts *machine_opts; | |
1068 | ||
1069 | /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */ | |
1070 | machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
1071 | if (machine_opts && | |
1072 | !qemu_opt_get_bool(machine_opts, "dump-guest-core", true)) { | |
1073 | ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP); | |
1074 | if (ret) { | |
1075 | perror("qemu_madvise"); | |
1076 | fprintf(stderr, "madvise doesn't support MADV_DONTDUMP, " | |
1077 | "but dump_guest_core=off specified\n"); | |
1078 | } | |
1079 | } | |
1080 | } | |
1081 | ||
c5705a77 | 1082 | void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) |
84b89d78 CM |
1083 | { |
1084 | RAMBlock *new_block, *block; | |
1085 | ||
c5705a77 | 1086 | new_block = NULL; |
a3161038 | 1087 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 AK |
1088 | if (block->offset == addr) { |
1089 | new_block = block; | |
1090 | break; | |
1091 | } | |
1092 | } | |
1093 | assert(new_block); | |
1094 | assert(!new_block->idstr[0]); | |
84b89d78 | 1095 | |
09e5ab63 AL |
1096 | if (dev) { |
1097 | char *id = qdev_get_dev_path(dev); | |
84b89d78 CM |
1098 | if (id) { |
1099 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); | |
7267c094 | 1100 | g_free(id); |
84b89d78 CM |
1101 | } |
1102 | } | |
1103 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); | |
1104 | ||
b2a8658e UD |
1105 | /* This assumes the iothread lock is taken here too. */ |
1106 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1107 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 | 1108 | if (block != new_block && !strcmp(block->idstr, new_block->idstr)) { |
84b89d78 CM |
1109 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
1110 | new_block->idstr); | |
1111 | abort(); | |
1112 | } | |
1113 | } | |
b2a8658e | 1114 | qemu_mutex_unlock_ramlist(); |
c5705a77 AK |
1115 | } |
1116 | ||
8490fc78 LC |
1117 | static int memory_try_enable_merging(void *addr, size_t len) |
1118 | { | |
1119 | QemuOpts *opts; | |
1120 | ||
1121 | opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
1122 | if (opts && !qemu_opt_get_bool(opts, "mem-merge", true)) { | |
1123 | /* disabled by the user */ | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE); | |
1128 | } | |
1129 | ||
c5705a77 AK |
1130 | ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, |
1131 | MemoryRegion *mr) | |
1132 | { | |
abb26d63 | 1133 | RAMBlock *block, *new_block; |
c5705a77 AK |
1134 | |
1135 | size = TARGET_PAGE_ALIGN(size); | |
1136 | new_block = g_malloc0(sizeof(*new_block)); | |
84b89d78 | 1137 | |
b2a8658e UD |
1138 | /* This assumes the iothread lock is taken here too. */ |
1139 | qemu_mutex_lock_ramlist(); | |
7c637366 | 1140 | new_block->mr = mr; |
432d268c | 1141 | new_block->offset = find_ram_offset(size); |
6977dfe6 YT |
1142 | if (host) { |
1143 | new_block->host = host; | |
cd19cfa2 | 1144 | new_block->flags |= RAM_PREALLOC_MASK; |
6977dfe6 YT |
1145 | } else { |
1146 | if (mem_path) { | |
c902760f | 1147 | #if defined (__linux__) && !defined(TARGET_S390X) |
6977dfe6 YT |
1148 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
1149 | if (!new_block->host) { | |
6eebf958 | 1150 | new_block->host = qemu_anon_ram_alloc(size); |
8490fc78 | 1151 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 1152 | } |
c902760f | 1153 | #else |
6977dfe6 YT |
1154 | fprintf(stderr, "-mem-path option unsupported\n"); |
1155 | exit(1); | |
c902760f | 1156 | #endif |
6977dfe6 | 1157 | } else { |
868bb33f | 1158 | if (xen_enabled()) { |
fce537d4 | 1159 | xen_ram_alloc(new_block->offset, size, mr); |
fdec9918 CB |
1160 | } else if (kvm_enabled()) { |
1161 | /* some s390/kvm configurations have special constraints */ | |
6eebf958 | 1162 | new_block->host = kvm_ram_alloc(size); |
432d268c | 1163 | } else { |
6eebf958 | 1164 | new_block->host = qemu_anon_ram_alloc(size); |
432d268c | 1165 | } |
8490fc78 | 1166 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 1167 | } |
c902760f | 1168 | } |
94a6b54f PB |
1169 | new_block->length = size; |
1170 | ||
abb26d63 PB |
1171 | /* Keep the list sorted from biggest to smallest block. */ |
1172 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
1173 | if (block->length < new_block->length) { | |
1174 | break; | |
1175 | } | |
1176 | } | |
1177 | if (block) { | |
1178 | QTAILQ_INSERT_BEFORE(block, new_block, next); | |
1179 | } else { | |
1180 | QTAILQ_INSERT_TAIL(&ram_list.blocks, new_block, next); | |
1181 | } | |
0d6d3c87 | 1182 | ram_list.mru_block = NULL; |
94a6b54f | 1183 | |
f798b07f | 1184 | ram_list.version++; |
b2a8658e | 1185 | qemu_mutex_unlock_ramlist(); |
f798b07f | 1186 | |
7267c094 | 1187 | ram_list.phys_dirty = g_realloc(ram_list.phys_dirty, |
04b16653 | 1188 | last_ram_offset() >> TARGET_PAGE_BITS); |
5fda043f IM |
1189 | memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), |
1190 | 0, size >> TARGET_PAGE_BITS); | |
1720aeee | 1191 | cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff); |
94a6b54f | 1192 | |
ddb97f1d | 1193 | qemu_ram_setup_dump(new_block->host, size); |
ad0b5321 | 1194 | qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE); |
ddb97f1d | 1195 | |
6f0437e8 JK |
1196 | if (kvm_enabled()) |
1197 | kvm_setup_guest_memory(new_block->host, size); | |
1198 | ||
94a6b54f PB |
1199 | return new_block->offset; |
1200 | } | |
e9a1ab19 | 1201 | |
c5705a77 | 1202 | ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) |
6977dfe6 | 1203 | { |
c5705a77 | 1204 | return qemu_ram_alloc_from_ptr(size, NULL, mr); |
6977dfe6 YT |
1205 | } |
1206 | ||
1f2e98b6 AW |
1207 | void qemu_ram_free_from_ptr(ram_addr_t addr) |
1208 | { | |
1209 | RAMBlock *block; | |
1210 | ||
b2a8658e UD |
1211 | /* This assumes the iothread lock is taken here too. */ |
1212 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1213 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
1f2e98b6 | 1214 | if (addr == block->offset) { |
a3161038 | 1215 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1216 | ram_list.mru_block = NULL; |
f798b07f | 1217 | ram_list.version++; |
7267c094 | 1218 | g_free(block); |
b2a8658e | 1219 | break; |
1f2e98b6 AW |
1220 | } |
1221 | } | |
b2a8658e | 1222 | qemu_mutex_unlock_ramlist(); |
1f2e98b6 AW |
1223 | } |
1224 | ||
c227f099 | 1225 | void qemu_ram_free(ram_addr_t addr) |
e9a1ab19 | 1226 | { |
04b16653 AW |
1227 | RAMBlock *block; |
1228 | ||
b2a8658e UD |
1229 | /* This assumes the iothread lock is taken here too. */ |
1230 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1231 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
04b16653 | 1232 | if (addr == block->offset) { |
a3161038 | 1233 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1234 | ram_list.mru_block = NULL; |
f798b07f | 1235 | ram_list.version++; |
cd19cfa2 HY |
1236 | if (block->flags & RAM_PREALLOC_MASK) { |
1237 | ; | |
1238 | } else if (mem_path) { | |
04b16653 AW |
1239 | #if defined (__linux__) && !defined(TARGET_S390X) |
1240 | if (block->fd) { | |
1241 | munmap(block->host, block->length); | |
1242 | close(block->fd); | |
1243 | } else { | |
e7a09b92 | 1244 | qemu_anon_ram_free(block->host, block->length); |
04b16653 | 1245 | } |
fd28aa13 JK |
1246 | #else |
1247 | abort(); | |
04b16653 AW |
1248 | #endif |
1249 | } else { | |
868bb33f | 1250 | if (xen_enabled()) { |
e41d7c69 | 1251 | xen_invalidate_map_cache_entry(block->host); |
432d268c | 1252 | } else { |
e7a09b92 | 1253 | qemu_anon_ram_free(block->host, block->length); |
432d268c | 1254 | } |
04b16653 | 1255 | } |
7267c094 | 1256 | g_free(block); |
b2a8658e | 1257 | break; |
04b16653 AW |
1258 | } |
1259 | } | |
b2a8658e | 1260 | qemu_mutex_unlock_ramlist(); |
04b16653 | 1261 | |
e9a1ab19 FB |
1262 | } |
1263 | ||
cd19cfa2 HY |
1264 | #ifndef _WIN32 |
1265 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) | |
1266 | { | |
1267 | RAMBlock *block; | |
1268 | ram_addr_t offset; | |
1269 | int flags; | |
1270 | void *area, *vaddr; | |
1271 | ||
a3161038 | 1272 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
cd19cfa2 HY |
1273 | offset = addr - block->offset; |
1274 | if (offset < block->length) { | |
1275 | vaddr = block->host + offset; | |
1276 | if (block->flags & RAM_PREALLOC_MASK) { | |
1277 | ; | |
1278 | } else { | |
1279 | flags = MAP_FIXED; | |
1280 | munmap(vaddr, length); | |
1281 | if (mem_path) { | |
1282 | #if defined(__linux__) && !defined(TARGET_S390X) | |
1283 | if (block->fd) { | |
1284 | #ifdef MAP_POPULATE | |
1285 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : | |
1286 | MAP_PRIVATE; | |
1287 | #else | |
1288 | flags |= MAP_PRIVATE; | |
1289 | #endif | |
1290 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1291 | flags, block->fd, offset); | |
1292 | } else { | |
1293 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
1294 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1295 | flags, -1, 0); | |
1296 | } | |
fd28aa13 JK |
1297 | #else |
1298 | abort(); | |
cd19cfa2 HY |
1299 | #endif |
1300 | } else { | |
1301 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
1302 | flags |= MAP_SHARED | MAP_ANONYMOUS; | |
1303 | area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE, | |
1304 | flags, -1, 0); | |
1305 | #else | |
1306 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
1307 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1308 | flags, -1, 0); | |
1309 | #endif | |
1310 | } | |
1311 | if (area != vaddr) { | |
f15fbc4b AP |
1312 | fprintf(stderr, "Could not remap addr: " |
1313 | RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n", | |
cd19cfa2 HY |
1314 | length, addr); |
1315 | exit(1); | |
1316 | } | |
8490fc78 | 1317 | memory_try_enable_merging(vaddr, length); |
ddb97f1d | 1318 | qemu_ram_setup_dump(vaddr, length); |
cd19cfa2 HY |
1319 | } |
1320 | return; | |
1321 | } | |
1322 | } | |
1323 | } | |
1324 | #endif /* !_WIN32 */ | |
1325 | ||
dc828ca1 | 1326 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
5579c7f3 PB |
1327 | With the exception of the softmmu code in this file, this should |
1328 | only be used for local memory (e.g. video ram) that the device owns, | |
1329 | and knows it isn't going to access beyond the end of the block. | |
1330 | ||
1331 | It should not be used for general purpose DMA. | |
1332 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. | |
1333 | */ | |
c227f099 | 1334 | void *qemu_get_ram_ptr(ram_addr_t addr) |
dc828ca1 | 1335 | { |
94a6b54f PB |
1336 | RAMBlock *block; |
1337 | ||
b2a8658e | 1338 | /* The list is protected by the iothread lock here. */ |
0d6d3c87 PB |
1339 | block = ram_list.mru_block; |
1340 | if (block && addr - block->offset < block->length) { | |
1341 | goto found; | |
1342 | } | |
a3161038 | 1343 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
f471a17e | 1344 | if (addr - block->offset < block->length) { |
0d6d3c87 | 1345 | goto found; |
f471a17e | 1346 | } |
94a6b54f | 1347 | } |
f471a17e AW |
1348 | |
1349 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1350 | abort(); | |
1351 | ||
0d6d3c87 PB |
1352 | found: |
1353 | ram_list.mru_block = block; | |
1354 | if (xen_enabled()) { | |
1355 | /* We need to check if the requested address is in the RAM | |
1356 | * because we don't want to map the entire memory in QEMU. | |
1357 | * In that case just map until the end of the page. | |
1358 | */ | |
1359 | if (block->offset == 0) { | |
1360 | return xen_map_cache(addr, 0, 0); | |
1361 | } else if (block->host == NULL) { | |
1362 | block->host = | |
1363 | xen_map_cache(block->offset, block->length, 1); | |
1364 | } | |
1365 | } | |
1366 | return block->host + (addr - block->offset); | |
dc828ca1 PB |
1367 | } |
1368 | ||
0d6d3c87 PB |
1369 | /* Return a host pointer to ram allocated with qemu_ram_alloc. Same as |
1370 | * qemu_get_ram_ptr but do not touch ram_list.mru_block. | |
1371 | * | |
1372 | * ??? Is this still necessary? | |
b2e0a138 | 1373 | */ |
8b9c99d9 | 1374 | static void *qemu_safe_ram_ptr(ram_addr_t addr) |
b2e0a138 MT |
1375 | { |
1376 | RAMBlock *block; | |
1377 | ||
b2a8658e | 1378 | /* The list is protected by the iothread lock here. */ |
a3161038 | 1379 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
b2e0a138 | 1380 | if (addr - block->offset < block->length) { |
868bb33f | 1381 | if (xen_enabled()) { |
432d268c JN |
1382 | /* We need to check if the requested address is in the RAM |
1383 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 1384 | * In that case just map until the end of the page. |
432d268c JN |
1385 | */ |
1386 | if (block->offset == 0) { | |
e41d7c69 | 1387 | return xen_map_cache(addr, 0, 0); |
432d268c | 1388 | } else if (block->host == NULL) { |
e41d7c69 JK |
1389 | block->host = |
1390 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
1391 | } |
1392 | } | |
b2e0a138 MT |
1393 | return block->host + (addr - block->offset); |
1394 | } | |
1395 | } | |
1396 | ||
1397 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1398 | abort(); | |
1399 | ||
1400 | return NULL; | |
1401 | } | |
1402 | ||
38bee5dc SS |
1403 | /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr |
1404 | * but takes a size argument */ | |
8b9c99d9 | 1405 | static void *qemu_ram_ptr_length(ram_addr_t addr, ram_addr_t *size) |
38bee5dc | 1406 | { |
8ab934f9 SS |
1407 | if (*size == 0) { |
1408 | return NULL; | |
1409 | } | |
868bb33f | 1410 | if (xen_enabled()) { |
e41d7c69 | 1411 | return xen_map_cache(addr, *size, 1); |
868bb33f | 1412 | } else { |
38bee5dc SS |
1413 | RAMBlock *block; |
1414 | ||
a3161038 | 1415 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
38bee5dc SS |
1416 | if (addr - block->offset < block->length) { |
1417 | if (addr - block->offset + *size > block->length) | |
1418 | *size = block->length - addr + block->offset; | |
1419 | return block->host + (addr - block->offset); | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1424 | abort(); | |
38bee5dc SS |
1425 | } |
1426 | } | |
1427 | ||
e890261f | 1428 | int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
5579c7f3 | 1429 | { |
94a6b54f PB |
1430 | RAMBlock *block; |
1431 | uint8_t *host = ptr; | |
1432 | ||
868bb33f | 1433 | if (xen_enabled()) { |
e41d7c69 | 1434 | *ram_addr = xen_ram_addr_from_mapcache(ptr); |
712c2b41 SS |
1435 | return 0; |
1436 | } | |
1437 | ||
a3161038 | 1438 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
432d268c JN |
1439 | /* This case append when the block is not mapped. */ |
1440 | if (block->host == NULL) { | |
1441 | continue; | |
1442 | } | |
f471a17e | 1443 | if (host - block->host < block->length) { |
e890261f MT |
1444 | *ram_addr = block->offset + (host - block->host); |
1445 | return 0; | |
f471a17e | 1446 | } |
94a6b54f | 1447 | } |
432d268c | 1448 | |
e890261f MT |
1449 | return -1; |
1450 | } | |
f471a17e | 1451 | |
e890261f MT |
1452 | /* Some of the softmmu routines need to translate from a host pointer |
1453 | (typically a TLB entry) back to a ram offset. */ | |
1454 | ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr) | |
1455 | { | |
1456 | ram_addr_t ram_addr; | |
f471a17e | 1457 | |
e890261f MT |
1458 | if (qemu_ram_addr_from_host(ptr, &ram_addr)) { |
1459 | fprintf(stderr, "Bad ram pointer %p\n", ptr); | |
1460 | abort(); | |
1461 | } | |
1462 | return ram_addr; | |
5579c7f3 PB |
1463 | } |
1464 | ||
a8170e5e | 1465 | static void notdirty_mem_write(void *opaque, hwaddr ram_addr, |
0e0df1e2 | 1466 | uint64_t val, unsigned size) |
9fa3e853 | 1467 | { |
3a7d929e | 1468 | int dirty_flags; |
f7c11b53 | 1469 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 1470 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
0e0df1e2 | 1471 | tb_invalidate_phys_page_fast(ram_addr, size); |
f7c11b53 | 1472 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 1473 | } |
0e0df1e2 AK |
1474 | switch (size) { |
1475 | case 1: | |
1476 | stb_p(qemu_get_ram_ptr(ram_addr), val); | |
1477 | break; | |
1478 | case 2: | |
1479 | stw_p(qemu_get_ram_ptr(ram_addr), val); | |
1480 | break; | |
1481 | case 4: | |
1482 | stl_p(qemu_get_ram_ptr(ram_addr), val); | |
1483 | break; | |
1484 | default: | |
1485 | abort(); | |
3a7d929e | 1486 | } |
f23db169 | 1487 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
f7c11b53 | 1488 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
f23db169 FB |
1489 | /* we remove the notdirty callback only if the code has been |
1490 | flushed */ | |
1491 | if (dirty_flags == 0xff) | |
2e70f6ef | 1492 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
9fa3e853 FB |
1493 | } |
1494 | ||
b018ddf6 PB |
1495 | static bool notdirty_mem_accepts(void *opaque, hwaddr addr, |
1496 | unsigned size, bool is_write) | |
1497 | { | |
1498 | return is_write; | |
1499 | } | |
1500 | ||
0e0df1e2 | 1501 | static const MemoryRegionOps notdirty_mem_ops = { |
0e0df1e2 | 1502 | .write = notdirty_mem_write, |
b018ddf6 | 1503 | .valid.accepts = notdirty_mem_accepts, |
0e0df1e2 | 1504 | .endianness = DEVICE_NATIVE_ENDIAN, |
1ccde1cb FB |
1505 | }; |
1506 | ||
0f459d16 | 1507 | /* Generate a debug exception if a watchpoint has been hit. */ |
b4051334 | 1508 | static void check_watchpoint(int offset, int len_mask, int flags) |
0f459d16 | 1509 | { |
9349b4f9 | 1510 | CPUArchState *env = cpu_single_env; |
06d55cc1 | 1511 | target_ulong pc, cs_base; |
0f459d16 | 1512 | target_ulong vaddr; |
a1d1bb31 | 1513 | CPUWatchpoint *wp; |
06d55cc1 | 1514 | int cpu_flags; |
0f459d16 | 1515 | |
06d55cc1 AL |
1516 | if (env->watchpoint_hit) { |
1517 | /* We re-entered the check after replacing the TB. Now raise | |
1518 | * the debug interrupt so that is will trigger after the | |
1519 | * current instruction. */ | |
c3affe56 | 1520 | cpu_interrupt(ENV_GET_CPU(env), CPU_INTERRUPT_DEBUG); |
06d55cc1 AL |
1521 | return; |
1522 | } | |
2e70f6ef | 1523 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
72cf2d4f | 1524 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 AL |
1525 | if ((vaddr == (wp->vaddr & len_mask) || |
1526 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { | |
6e140f28 AL |
1527 | wp->flags |= BP_WATCHPOINT_HIT; |
1528 | if (!env->watchpoint_hit) { | |
1529 | env->watchpoint_hit = wp; | |
5a316526 | 1530 | tb_check_watchpoint(env); |
6e140f28 AL |
1531 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { |
1532 | env->exception_index = EXCP_DEBUG; | |
488d6577 | 1533 | cpu_loop_exit(env); |
6e140f28 AL |
1534 | } else { |
1535 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); | |
1536 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); | |
488d6577 | 1537 | cpu_resume_from_signal(env, NULL); |
6e140f28 | 1538 | } |
06d55cc1 | 1539 | } |
6e140f28 AL |
1540 | } else { |
1541 | wp->flags &= ~BP_WATCHPOINT_HIT; | |
0f459d16 PB |
1542 | } |
1543 | } | |
1544 | } | |
1545 | ||
6658ffb8 PB |
1546 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
1547 | so these check for a hit then pass through to the normal out-of-line | |
1548 | phys routines. */ | |
a8170e5e | 1549 | static uint64_t watch_mem_read(void *opaque, hwaddr addr, |
1ec9b909 | 1550 | unsigned size) |
6658ffb8 | 1551 | { |
1ec9b909 AK |
1552 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_READ); |
1553 | switch (size) { | |
1554 | case 1: return ldub_phys(addr); | |
1555 | case 2: return lduw_phys(addr); | |
1556 | case 4: return ldl_phys(addr); | |
1557 | default: abort(); | |
1558 | } | |
6658ffb8 PB |
1559 | } |
1560 | ||
a8170e5e | 1561 | static void watch_mem_write(void *opaque, hwaddr addr, |
1ec9b909 | 1562 | uint64_t val, unsigned size) |
6658ffb8 | 1563 | { |
1ec9b909 AK |
1564 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_WRITE); |
1565 | switch (size) { | |
67364150 MF |
1566 | case 1: |
1567 | stb_phys(addr, val); | |
1568 | break; | |
1569 | case 2: | |
1570 | stw_phys(addr, val); | |
1571 | break; | |
1572 | case 4: | |
1573 | stl_phys(addr, val); | |
1574 | break; | |
1ec9b909 AK |
1575 | default: abort(); |
1576 | } | |
6658ffb8 PB |
1577 | } |
1578 | ||
1ec9b909 AK |
1579 | static const MemoryRegionOps watch_mem_ops = { |
1580 | .read = watch_mem_read, | |
1581 | .write = watch_mem_write, | |
1582 | .endianness = DEVICE_NATIVE_ENDIAN, | |
6658ffb8 | 1583 | }; |
6658ffb8 | 1584 | |
a8170e5e | 1585 | static uint64_t subpage_read(void *opaque, hwaddr addr, |
70c68e44 | 1586 | unsigned len) |
db7b5426 | 1587 | { |
acc9d80b JK |
1588 | subpage_t *subpage = opaque; |
1589 | uint8_t buf[4]; | |
791af8c8 | 1590 | |
db7b5426 | 1591 | #if defined(DEBUG_SUBPAGE) |
acc9d80b JK |
1592 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx "\n", __func__, |
1593 | subpage, len, addr); | |
db7b5426 | 1594 | #endif |
acc9d80b JK |
1595 | address_space_read(subpage->as, addr + subpage->base, buf, len); |
1596 | switch (len) { | |
1597 | case 1: | |
1598 | return ldub_p(buf); | |
1599 | case 2: | |
1600 | return lduw_p(buf); | |
1601 | case 4: | |
1602 | return ldl_p(buf); | |
1603 | default: | |
1604 | abort(); | |
1605 | } | |
db7b5426 BS |
1606 | } |
1607 | ||
a8170e5e | 1608 | static void subpage_write(void *opaque, hwaddr addr, |
70c68e44 | 1609 | uint64_t value, unsigned len) |
db7b5426 | 1610 | { |
acc9d80b JK |
1611 | subpage_t *subpage = opaque; |
1612 | uint8_t buf[4]; | |
1613 | ||
db7b5426 | 1614 | #if defined(DEBUG_SUBPAGE) |
70c68e44 | 1615 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx |
acc9d80b JK |
1616 | " value %"PRIx64"\n", |
1617 | __func__, subpage, len, addr, value); | |
db7b5426 | 1618 | #endif |
acc9d80b JK |
1619 | switch (len) { |
1620 | case 1: | |
1621 | stb_p(buf, value); | |
1622 | break; | |
1623 | case 2: | |
1624 | stw_p(buf, value); | |
1625 | break; | |
1626 | case 4: | |
1627 | stl_p(buf, value); | |
1628 | break; | |
1629 | default: | |
1630 | abort(); | |
1631 | } | |
1632 | address_space_write(subpage->as, addr + subpage->base, buf, len); | |
db7b5426 BS |
1633 | } |
1634 | ||
c353e4cc PB |
1635 | static bool subpage_accepts(void *opaque, hwaddr addr, |
1636 | unsigned size, bool is_write) | |
1637 | { | |
acc9d80b | 1638 | subpage_t *subpage = opaque; |
c353e4cc | 1639 | #if defined(DEBUG_SUBPAGE) |
acc9d80b JK |
1640 | printf("%s: subpage %p %c len %d addr " TARGET_FMT_plx "\n", |
1641 | __func__, subpage, is_write ? 'w' : 'r', len, addr); | |
c353e4cc PB |
1642 | #endif |
1643 | ||
acc9d80b JK |
1644 | return address_space_access_valid(subpage->as, addr + subpage->base, |
1645 | size, is_write); | |
c353e4cc PB |
1646 | } |
1647 | ||
70c68e44 AK |
1648 | static const MemoryRegionOps subpage_ops = { |
1649 | .read = subpage_read, | |
1650 | .write = subpage_write, | |
c353e4cc | 1651 | .valid.accepts = subpage_accepts, |
70c68e44 | 1652 | .endianness = DEVICE_NATIVE_ENDIAN, |
db7b5426 BS |
1653 | }; |
1654 | ||
c227f099 | 1655 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 1656 | uint16_t section) |
db7b5426 BS |
1657 | { |
1658 | int idx, eidx; | |
1659 | ||
1660 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) | |
1661 | return -1; | |
1662 | idx = SUBPAGE_IDX(start); | |
1663 | eidx = SUBPAGE_IDX(end); | |
1664 | #if defined(DEBUG_SUBPAGE) | |
0bf9e31a | 1665 | printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, |
db7b5426 BS |
1666 | mmio, start, end, idx, eidx, memory); |
1667 | #endif | |
db7b5426 | 1668 | for (; idx <= eidx; idx++) { |
5312bd8b | 1669 | mmio->sub_section[idx] = section; |
db7b5426 BS |
1670 | } |
1671 | ||
1672 | return 0; | |
1673 | } | |
1674 | ||
acc9d80b | 1675 | static subpage_t *subpage_init(AddressSpace *as, hwaddr base) |
db7b5426 | 1676 | { |
c227f099 | 1677 | subpage_t *mmio; |
db7b5426 | 1678 | |
7267c094 | 1679 | mmio = g_malloc0(sizeof(subpage_t)); |
1eec614b | 1680 | |
acc9d80b | 1681 | mmio->as = as; |
1eec614b | 1682 | mmio->base = base; |
70c68e44 AK |
1683 | memory_region_init_io(&mmio->iomem, &subpage_ops, mmio, |
1684 | "subpage", TARGET_PAGE_SIZE); | |
b3b00c78 | 1685 | mmio->iomem.subpage = true; |
db7b5426 | 1686 | #if defined(DEBUG_SUBPAGE) |
1eec614b AL |
1687 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
1688 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); | |
db7b5426 | 1689 | #endif |
0f0cb164 | 1690 | subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, phys_section_unassigned); |
db7b5426 BS |
1691 | |
1692 | return mmio; | |
1693 | } | |
1694 | ||
5312bd8b AK |
1695 | static uint16_t dummy_section(MemoryRegion *mr) |
1696 | { | |
1697 | MemoryRegionSection section = { | |
1698 | .mr = mr, | |
1699 | .offset_within_address_space = 0, | |
1700 | .offset_within_region = 0, | |
052e87b0 | 1701 | .size = int128_2_64(), |
5312bd8b AK |
1702 | }; |
1703 | ||
1704 | return phys_section_add(§ion); | |
1705 | } | |
1706 | ||
a8170e5e | 1707 | MemoryRegion *iotlb_to_region(hwaddr index) |
aa102231 | 1708 | { |
37ec01d4 | 1709 | return phys_sections[index & ~TARGET_PAGE_MASK].mr; |
aa102231 AK |
1710 | } |
1711 | ||
e9179ce1 AK |
1712 | static void io_mem_init(void) |
1713 | { | |
bf8d5166 | 1714 | memory_region_init_io(&io_mem_rom, &unassigned_mem_ops, NULL, "rom", UINT64_MAX); |
0e0df1e2 AK |
1715 | memory_region_init_io(&io_mem_unassigned, &unassigned_mem_ops, NULL, |
1716 | "unassigned", UINT64_MAX); | |
1717 | memory_region_init_io(&io_mem_notdirty, ¬dirty_mem_ops, NULL, | |
1718 | "notdirty", UINT64_MAX); | |
1ec9b909 AK |
1719 | memory_region_init_io(&io_mem_watch, &watch_mem_ops, NULL, |
1720 | "watch", UINT64_MAX); | |
e9179ce1 AK |
1721 | } |
1722 | ||
ac1970fb AK |
1723 | static void mem_begin(MemoryListener *listener) |
1724 | { | |
1725 | AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); | |
1726 | ||
1727 | destroy_all_mappings(d); | |
1728 | d->phys_map.ptr = PHYS_MAP_NODE_NIL; | |
1729 | } | |
1730 | ||
50c1e149 AK |
1731 | static void core_begin(MemoryListener *listener) |
1732 | { | |
5312bd8b AK |
1733 | phys_sections_clear(); |
1734 | phys_section_unassigned = dummy_section(&io_mem_unassigned); | |
aa102231 AK |
1735 | phys_section_notdirty = dummy_section(&io_mem_notdirty); |
1736 | phys_section_rom = dummy_section(&io_mem_rom); | |
1737 | phys_section_watch = dummy_section(&io_mem_watch); | |
50c1e149 AK |
1738 | } |
1739 | ||
1d71148e | 1740 | static void tcg_commit(MemoryListener *listener) |
50c1e149 | 1741 | { |
9349b4f9 | 1742 | CPUArchState *env; |
117712c3 AK |
1743 | |
1744 | /* since each CPU stores ram addresses in its TLB cache, we must | |
1745 | reset the modified entries */ | |
1746 | /* XXX: slow ! */ | |
1747 | for(env = first_cpu; env != NULL; env = env->next_cpu) { | |
1748 | tlb_flush(env, 1); | |
1749 | } | |
50c1e149 AK |
1750 | } |
1751 | ||
93632747 AK |
1752 | static void core_log_global_start(MemoryListener *listener) |
1753 | { | |
1754 | cpu_physical_memory_set_dirty_tracking(1); | |
1755 | } | |
1756 | ||
1757 | static void core_log_global_stop(MemoryListener *listener) | |
1758 | { | |
1759 | cpu_physical_memory_set_dirty_tracking(0); | |
1760 | } | |
1761 | ||
4855d41a AK |
1762 | static void io_region_add(MemoryListener *listener, |
1763 | MemoryRegionSection *section) | |
1764 | { | |
a2d33521 AK |
1765 | MemoryRegionIORange *mrio = g_new(MemoryRegionIORange, 1); |
1766 | ||
1767 | mrio->mr = section->mr; | |
1768 | mrio->offset = section->offset_within_region; | |
1769 | iorange_init(&mrio->iorange, &memory_region_iorange_ops, | |
052e87b0 PB |
1770 | section->offset_within_address_space, |
1771 | int128_get64(section->size)); | |
a2d33521 | 1772 | ioport_register(&mrio->iorange); |
4855d41a AK |
1773 | } |
1774 | ||
1775 | static void io_region_del(MemoryListener *listener, | |
1776 | MemoryRegionSection *section) | |
1777 | { | |
052e87b0 PB |
1778 | isa_unassign_ioport(section->offset_within_address_space, |
1779 | int128_get64(section->size)); | |
4855d41a AK |
1780 | } |
1781 | ||
93632747 | 1782 | static MemoryListener core_memory_listener = { |
50c1e149 | 1783 | .begin = core_begin, |
93632747 AK |
1784 | .log_global_start = core_log_global_start, |
1785 | .log_global_stop = core_log_global_stop, | |
ac1970fb | 1786 | .priority = 1, |
93632747 AK |
1787 | }; |
1788 | ||
4855d41a AK |
1789 | static MemoryListener io_memory_listener = { |
1790 | .region_add = io_region_add, | |
1791 | .region_del = io_region_del, | |
4855d41a AK |
1792 | .priority = 0, |
1793 | }; | |
1794 | ||
1d71148e AK |
1795 | static MemoryListener tcg_memory_listener = { |
1796 | .commit = tcg_commit, | |
1797 | }; | |
1798 | ||
ac1970fb AK |
1799 | void address_space_init_dispatch(AddressSpace *as) |
1800 | { | |
1801 | AddressSpaceDispatch *d = g_new(AddressSpaceDispatch, 1); | |
1802 | ||
1803 | d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 }; | |
1804 | d->listener = (MemoryListener) { | |
1805 | .begin = mem_begin, | |
1806 | .region_add = mem_add, | |
1807 | .region_nop = mem_add, | |
1808 | .priority = 0, | |
1809 | }; | |
acc9d80b | 1810 | d->as = as; |
ac1970fb AK |
1811 | as->dispatch = d; |
1812 | memory_listener_register(&d->listener, as); | |
1813 | } | |
1814 | ||
83f3c251 AK |
1815 | void address_space_destroy_dispatch(AddressSpace *as) |
1816 | { | |
1817 | AddressSpaceDispatch *d = as->dispatch; | |
1818 | ||
1819 | memory_listener_unregister(&d->listener); | |
1820 | destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1); | |
1821 | g_free(d); | |
1822 | as->dispatch = NULL; | |
1823 | } | |
1824 | ||
62152b8a AK |
1825 | static void memory_map_init(void) |
1826 | { | |
7267c094 | 1827 | system_memory = g_malloc(sizeof(*system_memory)); |
8417cebf | 1828 | memory_region_init(system_memory, "system", INT64_MAX); |
7dca8043 | 1829 | address_space_init(&address_space_memory, system_memory, "memory"); |
309cb471 | 1830 | |
7267c094 | 1831 | system_io = g_malloc(sizeof(*system_io)); |
309cb471 | 1832 | memory_region_init(system_io, "io", 65536); |
7dca8043 | 1833 | address_space_init(&address_space_io, system_io, "I/O"); |
93632747 | 1834 | |
f6790af6 AK |
1835 | memory_listener_register(&core_memory_listener, &address_space_memory); |
1836 | memory_listener_register(&io_memory_listener, &address_space_io); | |
1837 | memory_listener_register(&tcg_memory_listener, &address_space_memory); | |
62152b8a AK |
1838 | } |
1839 | ||
1840 | MemoryRegion *get_system_memory(void) | |
1841 | { | |
1842 | return system_memory; | |
1843 | } | |
1844 | ||
309cb471 AK |
1845 | MemoryRegion *get_system_io(void) |
1846 | { | |
1847 | return system_io; | |
1848 | } | |
1849 | ||
e2eef170 PB |
1850 | #endif /* !defined(CONFIG_USER_ONLY) */ |
1851 | ||
13eb76e0 FB |
1852 | /* physical memory access (slow version, mainly for debug) */ |
1853 | #if defined(CONFIG_USER_ONLY) | |
9349b4f9 | 1854 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
a68fe89c | 1855 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
1856 | { |
1857 | int l, flags; | |
1858 | target_ulong page; | |
53a5960a | 1859 | void * p; |
13eb76e0 FB |
1860 | |
1861 | while (len > 0) { | |
1862 | page = addr & TARGET_PAGE_MASK; | |
1863 | l = (page + TARGET_PAGE_SIZE) - addr; | |
1864 | if (l > len) | |
1865 | l = len; | |
1866 | flags = page_get_flags(page); | |
1867 | if (!(flags & PAGE_VALID)) | |
a68fe89c | 1868 | return -1; |
13eb76e0 FB |
1869 | if (is_write) { |
1870 | if (!(flags & PAGE_WRITE)) | |
a68fe89c | 1871 | return -1; |
579a97f7 | 1872 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1873 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
a68fe89c | 1874 | return -1; |
72fb7daa AJ |
1875 | memcpy(p, buf, l); |
1876 | unlock_user(p, addr, l); | |
13eb76e0 FB |
1877 | } else { |
1878 | if (!(flags & PAGE_READ)) | |
a68fe89c | 1879 | return -1; |
579a97f7 | 1880 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1881 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
a68fe89c | 1882 | return -1; |
72fb7daa | 1883 | memcpy(buf, p, l); |
5b257578 | 1884 | unlock_user(p, addr, 0); |
13eb76e0 FB |
1885 | } |
1886 | len -= l; | |
1887 | buf += l; | |
1888 | addr += l; | |
1889 | } | |
a68fe89c | 1890 | return 0; |
13eb76e0 | 1891 | } |
8df1cd07 | 1892 | |
13eb76e0 | 1893 | #else |
51d7a9eb | 1894 | |
a8170e5e AK |
1895 | static void invalidate_and_set_dirty(hwaddr addr, |
1896 | hwaddr length) | |
51d7a9eb AP |
1897 | { |
1898 | if (!cpu_physical_memory_is_dirty(addr)) { | |
1899 | /* invalidate code */ | |
1900 | tb_invalidate_phys_page_range(addr, addr + length, 0); | |
1901 | /* set dirty bit */ | |
1902 | cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG)); | |
1903 | } | |
e226939d | 1904 | xen_modified_memory(addr, length); |
51d7a9eb AP |
1905 | } |
1906 | ||
2bbfa05d PB |
1907 | static inline bool memory_access_is_direct(MemoryRegion *mr, bool is_write) |
1908 | { | |
1909 | if (memory_region_is_ram(mr)) { | |
1910 | return !(is_write && mr->readonly); | |
1911 | } | |
1912 | if (memory_region_is_romd(mr)) { | |
1913 | return !is_write; | |
1914 | } | |
1915 | ||
1916 | return false; | |
1917 | } | |
1918 | ||
f52cc467 | 1919 | static inline int memory_access_size(MemoryRegion *mr, int l, hwaddr addr) |
82f2563f | 1920 | { |
f52cc467 | 1921 | if (l >= 4 && (((addr & 3) == 0 || mr->ops->impl.unaligned))) { |
82f2563f PB |
1922 | return 4; |
1923 | } | |
f52cc467 | 1924 | if (l >= 2 && (((addr & 1) == 0) || mr->ops->impl.unaligned)) { |
82f2563f PB |
1925 | return 2; |
1926 | } | |
1927 | return 1; | |
1928 | } | |
1929 | ||
fd8aaa76 | 1930 | bool address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf, |
ac1970fb | 1931 | int len, bool is_write) |
13eb76e0 | 1932 | { |
149f54b5 | 1933 | hwaddr l; |
13eb76e0 | 1934 | uint8_t *ptr; |
791af8c8 | 1935 | uint64_t val; |
149f54b5 | 1936 | hwaddr addr1; |
5c8a00ce | 1937 | MemoryRegion *mr; |
fd8aaa76 | 1938 | bool error = false; |
3b46e624 | 1939 | |
13eb76e0 | 1940 | while (len > 0) { |
149f54b5 | 1941 | l = len; |
5c8a00ce | 1942 | mr = address_space_translate(as, addr, &addr1, &l, is_write); |
3b46e624 | 1943 | |
13eb76e0 | 1944 | if (is_write) { |
5c8a00ce PB |
1945 | if (!memory_access_is_direct(mr, is_write)) { |
1946 | l = memory_access_size(mr, l, addr1); | |
6a00d601 FB |
1947 | /* XXX: could force cpu_single_env to NULL to avoid |
1948 | potential bugs */ | |
82f2563f | 1949 | if (l == 4) { |
1c213d19 | 1950 | /* 32 bit write access */ |
c27004ec | 1951 | val = ldl_p(buf); |
5c8a00ce | 1952 | error |= io_mem_write(mr, addr1, val, 4); |
82f2563f | 1953 | } else if (l == 2) { |
1c213d19 | 1954 | /* 16 bit write access */ |
c27004ec | 1955 | val = lduw_p(buf); |
5c8a00ce | 1956 | error |= io_mem_write(mr, addr1, val, 2); |
13eb76e0 | 1957 | } else { |
1c213d19 | 1958 | /* 8 bit write access */ |
c27004ec | 1959 | val = ldub_p(buf); |
5c8a00ce | 1960 | error |= io_mem_write(mr, addr1, val, 1); |
13eb76e0 | 1961 | } |
2bbfa05d | 1962 | } else { |
5c8a00ce | 1963 | addr1 += memory_region_get_ram_addr(mr); |
13eb76e0 | 1964 | /* RAM case */ |
5579c7f3 | 1965 | ptr = qemu_get_ram_ptr(addr1); |
13eb76e0 | 1966 | memcpy(ptr, buf, l); |
51d7a9eb | 1967 | invalidate_and_set_dirty(addr1, l); |
13eb76e0 FB |
1968 | } |
1969 | } else { | |
5c8a00ce | 1970 | if (!memory_access_is_direct(mr, is_write)) { |
13eb76e0 | 1971 | /* I/O case */ |
5c8a00ce | 1972 | l = memory_access_size(mr, l, addr1); |
82f2563f | 1973 | if (l == 4) { |
13eb76e0 | 1974 | /* 32 bit read access */ |
5c8a00ce | 1975 | error |= io_mem_read(mr, addr1, &val, 4); |
c27004ec | 1976 | stl_p(buf, val); |
82f2563f | 1977 | } else if (l == 2) { |
13eb76e0 | 1978 | /* 16 bit read access */ |
5c8a00ce | 1979 | error |= io_mem_read(mr, addr1, &val, 2); |
c27004ec | 1980 | stw_p(buf, val); |
13eb76e0 | 1981 | } else { |
1c213d19 | 1982 | /* 8 bit read access */ |
5c8a00ce | 1983 | error |= io_mem_read(mr, addr1, &val, 1); |
c27004ec | 1984 | stb_p(buf, val); |
13eb76e0 FB |
1985 | } |
1986 | } else { | |
1987 | /* RAM case */ | |
5c8a00ce | 1988 | ptr = qemu_get_ram_ptr(mr->ram_addr + addr1); |
f3705d53 | 1989 | memcpy(buf, ptr, l); |
13eb76e0 FB |
1990 | } |
1991 | } | |
1992 | len -= l; | |
1993 | buf += l; | |
1994 | addr += l; | |
1995 | } | |
fd8aaa76 PB |
1996 | |
1997 | return error; | |
13eb76e0 | 1998 | } |
8df1cd07 | 1999 | |
fd8aaa76 | 2000 | bool address_space_write(AddressSpace *as, hwaddr addr, |
ac1970fb AK |
2001 | const uint8_t *buf, int len) |
2002 | { | |
fd8aaa76 | 2003 | return address_space_rw(as, addr, (uint8_t *)buf, len, true); |
ac1970fb AK |
2004 | } |
2005 | ||
fd8aaa76 | 2006 | bool address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len) |
ac1970fb | 2007 | { |
fd8aaa76 | 2008 | return address_space_rw(as, addr, buf, len, false); |
ac1970fb AK |
2009 | } |
2010 | ||
2011 | ||
a8170e5e | 2012 | void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, |
ac1970fb AK |
2013 | int len, int is_write) |
2014 | { | |
fd8aaa76 | 2015 | address_space_rw(&address_space_memory, addr, buf, len, is_write); |
ac1970fb AK |
2016 | } |
2017 | ||
d0ecd2aa | 2018 | /* used for ROM loading : can write in RAM and ROM */ |
a8170e5e | 2019 | void cpu_physical_memory_write_rom(hwaddr addr, |
d0ecd2aa FB |
2020 | const uint8_t *buf, int len) |
2021 | { | |
149f54b5 | 2022 | hwaddr l; |
d0ecd2aa | 2023 | uint8_t *ptr; |
149f54b5 | 2024 | hwaddr addr1; |
5c8a00ce | 2025 | MemoryRegion *mr; |
3b46e624 | 2026 | |
d0ecd2aa | 2027 | while (len > 0) { |
149f54b5 | 2028 | l = len; |
5c8a00ce PB |
2029 | mr = address_space_translate(&address_space_memory, |
2030 | addr, &addr1, &l, true); | |
3b46e624 | 2031 | |
5c8a00ce PB |
2032 | if (!(memory_region_is_ram(mr) || |
2033 | memory_region_is_romd(mr))) { | |
d0ecd2aa FB |
2034 | /* do nothing */ |
2035 | } else { | |
5c8a00ce | 2036 | addr1 += memory_region_get_ram_addr(mr); |
d0ecd2aa | 2037 | /* ROM/RAM case */ |
5579c7f3 | 2038 | ptr = qemu_get_ram_ptr(addr1); |
d0ecd2aa | 2039 | memcpy(ptr, buf, l); |
51d7a9eb | 2040 | invalidate_and_set_dirty(addr1, l); |
d0ecd2aa FB |
2041 | } |
2042 | len -= l; | |
2043 | buf += l; | |
2044 | addr += l; | |
2045 | } | |
2046 | } | |
2047 | ||
6d16c2f8 AL |
2048 | typedef struct { |
2049 | void *buffer; | |
a8170e5e AK |
2050 | hwaddr addr; |
2051 | hwaddr len; | |
6d16c2f8 AL |
2052 | } BounceBuffer; |
2053 | ||
2054 | static BounceBuffer bounce; | |
2055 | ||
ba223c29 AL |
2056 | typedef struct MapClient { |
2057 | void *opaque; | |
2058 | void (*callback)(void *opaque); | |
72cf2d4f | 2059 | QLIST_ENTRY(MapClient) link; |
ba223c29 AL |
2060 | } MapClient; |
2061 | ||
72cf2d4f BS |
2062 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
2063 | = QLIST_HEAD_INITIALIZER(map_client_list); | |
ba223c29 AL |
2064 | |
2065 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) | |
2066 | { | |
7267c094 | 2067 | MapClient *client = g_malloc(sizeof(*client)); |
ba223c29 AL |
2068 | |
2069 | client->opaque = opaque; | |
2070 | client->callback = callback; | |
72cf2d4f | 2071 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
ba223c29 AL |
2072 | return client; |
2073 | } | |
2074 | ||
8b9c99d9 | 2075 | static void cpu_unregister_map_client(void *_client) |
ba223c29 AL |
2076 | { |
2077 | MapClient *client = (MapClient *)_client; | |
2078 | ||
72cf2d4f | 2079 | QLIST_REMOVE(client, link); |
7267c094 | 2080 | g_free(client); |
ba223c29 AL |
2081 | } |
2082 | ||
2083 | static void cpu_notify_map_clients(void) | |
2084 | { | |
2085 | MapClient *client; | |
2086 | ||
72cf2d4f BS |
2087 | while (!QLIST_EMPTY(&map_client_list)) { |
2088 | client = QLIST_FIRST(&map_client_list); | |
ba223c29 | 2089 | client->callback(client->opaque); |
34d5e948 | 2090 | cpu_unregister_map_client(client); |
ba223c29 AL |
2091 | } |
2092 | } | |
2093 | ||
51644ab7 PB |
2094 | bool address_space_access_valid(AddressSpace *as, hwaddr addr, int len, bool is_write) |
2095 | { | |
5c8a00ce | 2096 | MemoryRegion *mr; |
51644ab7 PB |
2097 | hwaddr l, xlat; |
2098 | ||
2099 | while (len > 0) { | |
2100 | l = len; | |
5c8a00ce PB |
2101 | mr = address_space_translate(as, addr, &xlat, &l, is_write); |
2102 | if (!memory_access_is_direct(mr, is_write)) { | |
2103 | l = memory_access_size(mr, l, addr); | |
2104 | if (!memory_region_access_valid(mr, xlat, l, is_write)) { | |
51644ab7 PB |
2105 | return false; |
2106 | } | |
2107 | } | |
2108 | ||
2109 | len -= l; | |
2110 | addr += l; | |
2111 | } | |
2112 | return true; | |
2113 | } | |
2114 | ||
6d16c2f8 AL |
2115 | /* Map a physical memory region into a host virtual address. |
2116 | * May map a subset of the requested range, given by and returned in *plen. | |
2117 | * May return NULL if resources needed to perform the mapping are exhausted. | |
2118 | * Use only for reads OR writes - not for read-modify-write operations. | |
ba223c29 AL |
2119 | * Use cpu_register_map_client() to know when retrying the map operation is |
2120 | * likely to succeed. | |
6d16c2f8 | 2121 | */ |
ac1970fb | 2122 | void *address_space_map(AddressSpace *as, |
a8170e5e AK |
2123 | hwaddr addr, |
2124 | hwaddr *plen, | |
ac1970fb | 2125 | bool is_write) |
6d16c2f8 | 2126 | { |
a8170e5e AK |
2127 | hwaddr len = *plen; |
2128 | hwaddr todo = 0; | |
149f54b5 | 2129 | hwaddr l, xlat; |
5c8a00ce | 2130 | MemoryRegion *mr; |
f15fbc4b | 2131 | ram_addr_t raddr = RAM_ADDR_MAX; |
8ab934f9 SS |
2132 | ram_addr_t rlen; |
2133 | void *ret; | |
6d16c2f8 AL |
2134 | |
2135 | while (len > 0) { | |
149f54b5 | 2136 | l = len; |
5c8a00ce | 2137 | mr = address_space_translate(as, addr, &xlat, &l, is_write); |
6d16c2f8 | 2138 | |
5c8a00ce | 2139 | if (!memory_access_is_direct(mr, is_write)) { |
38bee5dc | 2140 | if (todo || bounce.buffer) { |
6d16c2f8 AL |
2141 | break; |
2142 | } | |
2143 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); | |
2144 | bounce.addr = addr; | |
2145 | bounce.len = l; | |
2146 | if (!is_write) { | |
ac1970fb | 2147 | address_space_read(as, addr, bounce.buffer, l); |
6d16c2f8 | 2148 | } |
38bee5dc SS |
2149 | |
2150 | *plen = l; | |
2151 | return bounce.buffer; | |
6d16c2f8 | 2152 | } |
8ab934f9 | 2153 | if (!todo) { |
5c8a00ce | 2154 | raddr = memory_region_get_ram_addr(mr) + xlat; |
149f54b5 | 2155 | } else { |
5c8a00ce | 2156 | if (memory_region_get_ram_addr(mr) + xlat != raddr + todo) { |
149f54b5 PB |
2157 | break; |
2158 | } | |
8ab934f9 | 2159 | } |
6d16c2f8 AL |
2160 | |
2161 | len -= l; | |
2162 | addr += l; | |
38bee5dc | 2163 | todo += l; |
6d16c2f8 | 2164 | } |
8ab934f9 SS |
2165 | rlen = todo; |
2166 | ret = qemu_ram_ptr_length(raddr, &rlen); | |
2167 | *plen = rlen; | |
2168 | return ret; | |
6d16c2f8 AL |
2169 | } |
2170 | ||
ac1970fb | 2171 | /* Unmaps a memory region previously mapped by address_space_map(). |
6d16c2f8 AL |
2172 | * Will also mark the memory as dirty if is_write == 1. access_len gives |
2173 | * the amount of memory that was actually read or written by the caller. | |
2174 | */ | |
a8170e5e AK |
2175 | void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len, |
2176 | int is_write, hwaddr access_len) | |
6d16c2f8 AL |
2177 | { |
2178 | if (buffer != bounce.buffer) { | |
2179 | if (is_write) { | |
e890261f | 2180 | ram_addr_t addr1 = qemu_ram_addr_from_host_nofail(buffer); |
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 | } |
6d16c2f8 AL |
2194 | return; |
2195 | } | |
2196 | if (is_write) { | |
ac1970fb | 2197 | address_space_write(as, bounce.addr, bounce.buffer, access_len); |
6d16c2f8 | 2198 | } |
f8a83245 | 2199 | qemu_vfree(bounce.buffer); |
6d16c2f8 | 2200 | bounce.buffer = NULL; |
ba223c29 | 2201 | cpu_notify_map_clients(); |
6d16c2f8 | 2202 | } |
d0ecd2aa | 2203 | |
a8170e5e AK |
2204 | void *cpu_physical_memory_map(hwaddr addr, |
2205 | hwaddr *plen, | |
ac1970fb AK |
2206 | int is_write) |
2207 | { | |
2208 | return address_space_map(&address_space_memory, addr, plen, is_write); | |
2209 | } | |
2210 | ||
a8170e5e AK |
2211 | void cpu_physical_memory_unmap(void *buffer, hwaddr len, |
2212 | int is_write, hwaddr access_len) | |
ac1970fb AK |
2213 | { |
2214 | return address_space_unmap(&address_space_memory, buffer, len, is_write, access_len); | |
2215 | } | |
2216 | ||
8df1cd07 | 2217 | /* warning: addr must be aligned */ |
a8170e5e | 2218 | static inline uint32_t ldl_phys_internal(hwaddr addr, |
1e78bcc1 | 2219 | enum device_endian endian) |
8df1cd07 | 2220 | { |
8df1cd07 | 2221 | uint8_t *ptr; |
791af8c8 | 2222 | uint64_t val; |
5c8a00ce | 2223 | MemoryRegion *mr; |
149f54b5 PB |
2224 | hwaddr l = 4; |
2225 | hwaddr addr1; | |
8df1cd07 | 2226 | |
5c8a00ce PB |
2227 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2228 | false); | |
2229 | if (l < 4 || !memory_access_is_direct(mr, false)) { | |
8df1cd07 | 2230 | /* I/O case */ |
5c8a00ce | 2231 | io_mem_read(mr, addr1, &val, 4); |
1e78bcc1 AG |
2232 | #if defined(TARGET_WORDS_BIGENDIAN) |
2233 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2234 | val = bswap32(val); | |
2235 | } | |
2236 | #else | |
2237 | if (endian == DEVICE_BIG_ENDIAN) { | |
2238 | val = bswap32(val); | |
2239 | } | |
2240 | #endif | |
8df1cd07 FB |
2241 | } else { |
2242 | /* RAM case */ | |
5c8a00ce | 2243 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2244 | & TARGET_PAGE_MASK) |
149f54b5 | 2245 | + addr1); |
1e78bcc1 AG |
2246 | switch (endian) { |
2247 | case DEVICE_LITTLE_ENDIAN: | |
2248 | val = ldl_le_p(ptr); | |
2249 | break; | |
2250 | case DEVICE_BIG_ENDIAN: | |
2251 | val = ldl_be_p(ptr); | |
2252 | break; | |
2253 | default: | |
2254 | val = ldl_p(ptr); | |
2255 | break; | |
2256 | } | |
8df1cd07 FB |
2257 | } |
2258 | return val; | |
2259 | } | |
2260 | ||
a8170e5e | 2261 | uint32_t ldl_phys(hwaddr addr) |
1e78bcc1 AG |
2262 | { |
2263 | return ldl_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2264 | } | |
2265 | ||
a8170e5e | 2266 | uint32_t ldl_le_phys(hwaddr addr) |
1e78bcc1 AG |
2267 | { |
2268 | return ldl_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2269 | } | |
2270 | ||
a8170e5e | 2271 | uint32_t ldl_be_phys(hwaddr addr) |
1e78bcc1 AG |
2272 | { |
2273 | return ldl_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2274 | } | |
2275 | ||
84b7b8e7 | 2276 | /* warning: addr must be aligned */ |
a8170e5e | 2277 | static inline uint64_t ldq_phys_internal(hwaddr addr, |
1e78bcc1 | 2278 | enum device_endian endian) |
84b7b8e7 | 2279 | { |
84b7b8e7 FB |
2280 | uint8_t *ptr; |
2281 | uint64_t val; | |
5c8a00ce | 2282 | MemoryRegion *mr; |
149f54b5 PB |
2283 | hwaddr l = 8; |
2284 | hwaddr addr1; | |
84b7b8e7 | 2285 | |
5c8a00ce PB |
2286 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2287 | false); | |
2288 | if (l < 8 || !memory_access_is_direct(mr, false)) { | |
84b7b8e7 | 2289 | /* I/O case */ |
5c8a00ce | 2290 | io_mem_read(mr, addr1, &val, 8); |
968a5627 PB |
2291 | #if defined(TARGET_WORDS_BIGENDIAN) |
2292 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2293 | val = bswap64(val); | |
2294 | } | |
2295 | #else | |
2296 | if (endian == DEVICE_BIG_ENDIAN) { | |
2297 | val = bswap64(val); | |
2298 | } | |
84b7b8e7 FB |
2299 | #endif |
2300 | } else { | |
2301 | /* RAM case */ | |
5c8a00ce | 2302 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2303 | & TARGET_PAGE_MASK) |
149f54b5 | 2304 | + addr1); |
1e78bcc1 AG |
2305 | switch (endian) { |
2306 | case DEVICE_LITTLE_ENDIAN: | |
2307 | val = ldq_le_p(ptr); | |
2308 | break; | |
2309 | case DEVICE_BIG_ENDIAN: | |
2310 | val = ldq_be_p(ptr); | |
2311 | break; | |
2312 | default: | |
2313 | val = ldq_p(ptr); | |
2314 | break; | |
2315 | } | |
84b7b8e7 FB |
2316 | } |
2317 | return val; | |
2318 | } | |
2319 | ||
a8170e5e | 2320 | uint64_t ldq_phys(hwaddr addr) |
1e78bcc1 AG |
2321 | { |
2322 | return ldq_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2323 | } | |
2324 | ||
a8170e5e | 2325 | uint64_t ldq_le_phys(hwaddr addr) |
1e78bcc1 AG |
2326 | { |
2327 | return ldq_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2328 | } | |
2329 | ||
a8170e5e | 2330 | uint64_t ldq_be_phys(hwaddr addr) |
1e78bcc1 AG |
2331 | { |
2332 | return ldq_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2333 | } | |
2334 | ||
aab33094 | 2335 | /* XXX: optimize */ |
a8170e5e | 2336 | uint32_t ldub_phys(hwaddr addr) |
aab33094 FB |
2337 | { |
2338 | uint8_t val; | |
2339 | cpu_physical_memory_read(addr, &val, 1); | |
2340 | return val; | |
2341 | } | |
2342 | ||
733f0b02 | 2343 | /* warning: addr must be aligned */ |
a8170e5e | 2344 | static inline uint32_t lduw_phys_internal(hwaddr addr, |
1e78bcc1 | 2345 | enum device_endian endian) |
aab33094 | 2346 | { |
733f0b02 MT |
2347 | uint8_t *ptr; |
2348 | uint64_t val; | |
5c8a00ce | 2349 | MemoryRegion *mr; |
149f54b5 PB |
2350 | hwaddr l = 2; |
2351 | hwaddr addr1; | |
733f0b02 | 2352 | |
5c8a00ce PB |
2353 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2354 | false); | |
2355 | if (l < 2 || !memory_access_is_direct(mr, false)) { | |
733f0b02 | 2356 | /* I/O case */ |
5c8a00ce | 2357 | io_mem_read(mr, addr1, &val, 2); |
1e78bcc1 AG |
2358 | #if defined(TARGET_WORDS_BIGENDIAN) |
2359 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2360 | val = bswap16(val); | |
2361 | } | |
2362 | #else | |
2363 | if (endian == DEVICE_BIG_ENDIAN) { | |
2364 | val = bswap16(val); | |
2365 | } | |
2366 | #endif | |
733f0b02 MT |
2367 | } else { |
2368 | /* RAM case */ | |
5c8a00ce | 2369 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(mr) |
06ef3525 | 2370 | & TARGET_PAGE_MASK) |
149f54b5 | 2371 | + addr1); |
1e78bcc1 AG |
2372 | switch (endian) { |
2373 | case DEVICE_LITTLE_ENDIAN: | |
2374 | val = lduw_le_p(ptr); | |
2375 | break; | |
2376 | case DEVICE_BIG_ENDIAN: | |
2377 | val = lduw_be_p(ptr); | |
2378 | break; | |
2379 | default: | |
2380 | val = lduw_p(ptr); | |
2381 | break; | |
2382 | } | |
733f0b02 MT |
2383 | } |
2384 | return val; | |
aab33094 FB |
2385 | } |
2386 | ||
a8170e5e | 2387 | uint32_t lduw_phys(hwaddr addr) |
1e78bcc1 AG |
2388 | { |
2389 | return lduw_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2390 | } | |
2391 | ||
a8170e5e | 2392 | uint32_t lduw_le_phys(hwaddr addr) |
1e78bcc1 AG |
2393 | { |
2394 | return lduw_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2395 | } | |
2396 | ||
a8170e5e | 2397 | uint32_t lduw_be_phys(hwaddr addr) |
1e78bcc1 AG |
2398 | { |
2399 | return lduw_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2400 | } | |
2401 | ||
8df1cd07 FB |
2402 | /* warning: addr must be aligned. The ram page is not masked as dirty |
2403 | and the code inside is not invalidated. It is useful if the dirty | |
2404 | bits are used to track modified PTEs */ | |
a8170e5e | 2405 | void stl_phys_notdirty(hwaddr addr, uint32_t val) |
8df1cd07 | 2406 | { |
8df1cd07 | 2407 | uint8_t *ptr; |
5c8a00ce | 2408 | MemoryRegion *mr; |
149f54b5 PB |
2409 | hwaddr l = 4; |
2410 | hwaddr addr1; | |
8df1cd07 | 2411 | |
5c8a00ce PB |
2412 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2413 | true); | |
2414 | if (l < 4 || !memory_access_is_direct(mr, true)) { | |
2415 | io_mem_write(mr, addr1, val, 4); | |
8df1cd07 | 2416 | } else { |
5c8a00ce | 2417 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
5579c7f3 | 2418 | ptr = qemu_get_ram_ptr(addr1); |
8df1cd07 | 2419 | stl_p(ptr, val); |
74576198 AL |
2420 | |
2421 | if (unlikely(in_migration)) { | |
2422 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
2423 | /* invalidate code */ | |
2424 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
2425 | /* set dirty bit */ | |
f7c11b53 YT |
2426 | cpu_physical_memory_set_dirty_flags( |
2427 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
74576198 AL |
2428 | } |
2429 | } | |
8df1cd07 FB |
2430 | } |
2431 | } | |
2432 | ||
2433 | /* warning: addr must be aligned */ | |
a8170e5e | 2434 | static inline void stl_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 2435 | enum device_endian endian) |
8df1cd07 | 2436 | { |
8df1cd07 | 2437 | uint8_t *ptr; |
5c8a00ce | 2438 | MemoryRegion *mr; |
149f54b5 PB |
2439 | hwaddr l = 4; |
2440 | hwaddr addr1; | |
8df1cd07 | 2441 | |
5c8a00ce PB |
2442 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2443 | true); | |
2444 | if (l < 4 || !memory_access_is_direct(mr, true)) { | |
1e78bcc1 AG |
2445 | #if defined(TARGET_WORDS_BIGENDIAN) |
2446 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2447 | val = bswap32(val); | |
2448 | } | |
2449 | #else | |
2450 | if (endian == DEVICE_BIG_ENDIAN) { | |
2451 | val = bswap32(val); | |
2452 | } | |
2453 | #endif | |
5c8a00ce | 2454 | io_mem_write(mr, addr1, val, 4); |
8df1cd07 | 2455 | } else { |
8df1cd07 | 2456 | /* RAM case */ |
5c8a00ce | 2457 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
5579c7f3 | 2458 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
2459 | switch (endian) { |
2460 | case DEVICE_LITTLE_ENDIAN: | |
2461 | stl_le_p(ptr, val); | |
2462 | break; | |
2463 | case DEVICE_BIG_ENDIAN: | |
2464 | stl_be_p(ptr, val); | |
2465 | break; | |
2466 | default: | |
2467 | stl_p(ptr, val); | |
2468 | break; | |
2469 | } | |
51d7a9eb | 2470 | invalidate_and_set_dirty(addr1, 4); |
8df1cd07 FB |
2471 | } |
2472 | } | |
2473 | ||
a8170e5e | 2474 | void stl_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2475 | { |
2476 | stl_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
2477 | } | |
2478 | ||
a8170e5e | 2479 | void stl_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2480 | { |
2481 | stl_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
2482 | } | |
2483 | ||
a8170e5e | 2484 | void stl_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2485 | { |
2486 | stl_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
2487 | } | |
2488 | ||
aab33094 | 2489 | /* XXX: optimize */ |
a8170e5e | 2490 | void stb_phys(hwaddr addr, uint32_t val) |
aab33094 FB |
2491 | { |
2492 | uint8_t v = val; | |
2493 | cpu_physical_memory_write(addr, &v, 1); | |
2494 | } | |
2495 | ||
733f0b02 | 2496 | /* warning: addr must be aligned */ |
a8170e5e | 2497 | static inline void stw_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 2498 | enum device_endian endian) |
aab33094 | 2499 | { |
733f0b02 | 2500 | uint8_t *ptr; |
5c8a00ce | 2501 | MemoryRegion *mr; |
149f54b5 PB |
2502 | hwaddr l = 2; |
2503 | hwaddr addr1; | |
733f0b02 | 2504 | |
5c8a00ce PB |
2505 | mr = address_space_translate(&address_space_memory, addr, &addr1, &l, |
2506 | true); | |
2507 | if (l < 2 || !memory_access_is_direct(mr, true)) { | |
1e78bcc1 AG |
2508 | #if defined(TARGET_WORDS_BIGENDIAN) |
2509 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2510 | val = bswap16(val); | |
2511 | } | |
2512 | #else | |
2513 | if (endian == DEVICE_BIG_ENDIAN) { | |
2514 | val = bswap16(val); | |
2515 | } | |
2516 | #endif | |
5c8a00ce | 2517 | io_mem_write(mr, addr1, val, 2); |
733f0b02 | 2518 | } else { |
733f0b02 | 2519 | /* RAM case */ |
5c8a00ce | 2520 | addr1 += memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK; |
733f0b02 | 2521 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
2522 | switch (endian) { |
2523 | case DEVICE_LITTLE_ENDIAN: | |
2524 | stw_le_p(ptr, val); | |
2525 | break; | |
2526 | case DEVICE_BIG_ENDIAN: | |
2527 | stw_be_p(ptr, val); | |
2528 | break; | |
2529 | default: | |
2530 | stw_p(ptr, val); | |
2531 | break; | |
2532 | } | |
51d7a9eb | 2533 | invalidate_and_set_dirty(addr1, 2); |
733f0b02 | 2534 | } |
aab33094 FB |
2535 | } |
2536 | ||
a8170e5e | 2537 | void stw_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2538 | { |
2539 | stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
2540 | } | |
2541 | ||
a8170e5e | 2542 | void stw_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2543 | { |
2544 | stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
2545 | } | |
2546 | ||
a8170e5e | 2547 | void stw_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2548 | { |
2549 | stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
2550 | } | |
2551 | ||
aab33094 | 2552 | /* XXX: optimize */ |
a8170e5e | 2553 | void stq_phys(hwaddr addr, uint64_t val) |
aab33094 FB |
2554 | { |
2555 | val = tswap64(val); | |
71d2b725 | 2556 | cpu_physical_memory_write(addr, &val, 8); |
aab33094 FB |
2557 | } |
2558 | ||
a8170e5e | 2559 | void stq_le_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2560 | { |
2561 | val = cpu_to_le64(val); | |
2562 | cpu_physical_memory_write(addr, &val, 8); | |
2563 | } | |
2564 | ||
a8170e5e | 2565 | void stq_be_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2566 | { |
2567 | val = cpu_to_be64(val); | |
2568 | cpu_physical_memory_write(addr, &val, 8); | |
2569 | } | |
2570 | ||
5e2972fd | 2571 | /* virtual memory access for debug (includes writing to ROM) */ |
9349b4f9 | 2572 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
b448f2f3 | 2573 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
2574 | { |
2575 | int l; | |
a8170e5e | 2576 | hwaddr phys_addr; |
9b3c35e0 | 2577 | target_ulong page; |
13eb76e0 FB |
2578 | |
2579 | while (len > 0) { | |
2580 | page = addr & TARGET_PAGE_MASK; | |
2581 | phys_addr = cpu_get_phys_page_debug(env, page); | |
2582 | /* if no physical page mapped, return an error */ | |
2583 | if (phys_addr == -1) | |
2584 | return -1; | |
2585 | l = (page + TARGET_PAGE_SIZE) - addr; | |
2586 | if (l > len) | |
2587 | l = len; | |
5e2972fd | 2588 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
5e2972fd AL |
2589 | if (is_write) |
2590 | cpu_physical_memory_write_rom(phys_addr, buf, l); | |
2591 | else | |
5e2972fd | 2592 | cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
13eb76e0 FB |
2593 | len -= l; |
2594 | buf += l; | |
2595 | addr += l; | |
2596 | } | |
2597 | return 0; | |
2598 | } | |
a68fe89c | 2599 | #endif |
13eb76e0 | 2600 | |
8e4a424b BS |
2601 | #if !defined(CONFIG_USER_ONLY) |
2602 | ||
2603 | /* | |
2604 | * A helper function for the _utterly broken_ virtio device model to find out if | |
2605 | * it's running on a big endian machine. Don't do this at home kids! | |
2606 | */ | |
2607 | bool virtio_is_big_endian(void); | |
2608 | bool virtio_is_big_endian(void) | |
2609 | { | |
2610 | #if defined(TARGET_WORDS_BIGENDIAN) | |
2611 | return true; | |
2612 | #else | |
2613 | return false; | |
2614 | #endif | |
2615 | } | |
2616 | ||
2617 | #endif | |
2618 | ||
76f35538 | 2619 | #ifndef CONFIG_USER_ONLY |
a8170e5e | 2620 | bool cpu_physical_memory_is_io(hwaddr phys_addr) |
76f35538 | 2621 | { |
5c8a00ce | 2622 | MemoryRegion*mr; |
149f54b5 | 2623 | hwaddr l = 1; |
76f35538 | 2624 | |
5c8a00ce PB |
2625 | mr = address_space_translate(&address_space_memory, |
2626 | phys_addr, &phys_addr, &l, false); | |
76f35538 | 2627 | |
5c8a00ce PB |
2628 | return !(memory_region_is_ram(mr) || |
2629 | memory_region_is_romd(mr)); | |
76f35538 | 2630 | } |
bd2fa51f MH |
2631 | |
2632 | void qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque) | |
2633 | { | |
2634 | RAMBlock *block; | |
2635 | ||
2636 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
2637 | func(block->host, block->offset, block->length, opaque); | |
2638 | } | |
2639 | } | |
ec3f8c99 | 2640 | #endif |