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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" |
432d268c | 34 | #include "hw/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 | |
67d3b957 | 53 | //#define DEBUG_UNASSIGNED |
db7b5426 | 54 | //#define DEBUG_SUBPAGE |
1196be37 | 55 | |
e2eef170 | 56 | #if !defined(CONFIG_USER_ONLY) |
9fa3e853 | 57 | int phys_ram_fd; |
74576198 | 58 | static int in_migration; |
94a6b54f | 59 | |
a3161038 | 60 | RAMList ram_list = { .blocks = QTAILQ_HEAD_INITIALIZER(ram_list.blocks) }; |
62152b8a AK |
61 | |
62 | static MemoryRegion *system_memory; | |
309cb471 | 63 | static MemoryRegion *system_io; |
62152b8a | 64 | |
f6790af6 AK |
65 | AddressSpace address_space_io; |
66 | AddressSpace address_space_memory; | |
9e11908f | 67 | DMAContext dma_context_memory; |
2673a5da | 68 | |
0e0df1e2 | 69 | MemoryRegion io_mem_ram, io_mem_rom, io_mem_unassigned, io_mem_notdirty; |
de712f94 | 70 | static MemoryRegion io_mem_subpage_ram; |
0e0df1e2 | 71 | |
e2eef170 | 72 | #endif |
9fa3e853 | 73 | |
9349b4f9 | 74 | CPUArchState *first_cpu; |
6a00d601 FB |
75 | /* current CPU in the current thread. It is only valid inside |
76 | cpu_exec() */ | |
9349b4f9 | 77 | DEFINE_TLS(CPUArchState *,cpu_single_env); |
2e70f6ef | 78 | /* 0 = Do not count executed instructions. |
bf20dc07 | 79 | 1 = Precise instruction counting. |
2e70f6ef | 80 | 2 = Adaptive rate instruction counting. */ |
5708fc66 | 81 | int use_icount; |
6a00d601 | 82 | |
e2eef170 | 83 | #if !defined(CONFIG_USER_ONLY) |
4346ae3e | 84 | |
5312bd8b AK |
85 | static MemoryRegionSection *phys_sections; |
86 | static unsigned phys_sections_nb, phys_sections_nb_alloc; | |
87 | static uint16_t phys_section_unassigned; | |
aa102231 AK |
88 | static uint16_t phys_section_notdirty; |
89 | static uint16_t phys_section_rom; | |
90 | static uint16_t phys_section_watch; | |
5312bd8b | 91 | |
d6f2ea22 AK |
92 | /* Simple allocator for PhysPageEntry nodes */ |
93 | static PhysPageEntry (*phys_map_nodes)[L2_SIZE]; | |
94 | static unsigned phys_map_nodes_nb, phys_map_nodes_nb_alloc; | |
95 | ||
07f07b31 | 96 | #define PHYS_MAP_NODE_NIL (((uint16_t)~0) >> 1) |
d6f2ea22 | 97 | |
e2eef170 | 98 | static void io_mem_init(void); |
62152b8a | 99 | static void memory_map_init(void); |
8b9c99d9 | 100 | static void *qemu_safe_ram_ptr(ram_addr_t addr); |
e2eef170 | 101 | |
1ec9b909 | 102 | static MemoryRegion io_mem_watch; |
6658ffb8 | 103 | #endif |
fd6ce8f6 | 104 | |
6d9a1304 | 105 | #if !defined(CONFIG_USER_ONLY) |
d6f2ea22 | 106 | |
f7bf5461 | 107 | static void phys_map_node_reserve(unsigned nodes) |
d6f2ea22 | 108 | { |
f7bf5461 | 109 | if (phys_map_nodes_nb + nodes > phys_map_nodes_nb_alloc) { |
d6f2ea22 AK |
110 | typedef PhysPageEntry Node[L2_SIZE]; |
111 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc * 2, 16); | |
f7bf5461 AK |
112 | phys_map_nodes_nb_alloc = MAX(phys_map_nodes_nb_alloc, |
113 | phys_map_nodes_nb + nodes); | |
d6f2ea22 AK |
114 | phys_map_nodes = g_renew(Node, phys_map_nodes, |
115 | phys_map_nodes_nb_alloc); | |
116 | } | |
f7bf5461 AK |
117 | } |
118 | ||
119 | static uint16_t phys_map_node_alloc(void) | |
120 | { | |
121 | unsigned i; | |
122 | uint16_t ret; | |
123 | ||
124 | ret = phys_map_nodes_nb++; | |
125 | assert(ret != PHYS_MAP_NODE_NIL); | |
126 | assert(ret != phys_map_nodes_nb_alloc); | |
d6f2ea22 | 127 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 128 | phys_map_nodes[ret][i].is_leaf = 0; |
c19e8800 | 129 | phys_map_nodes[ret][i].ptr = PHYS_MAP_NODE_NIL; |
d6f2ea22 | 130 | } |
f7bf5461 | 131 | return ret; |
d6f2ea22 AK |
132 | } |
133 | ||
134 | static void phys_map_nodes_reset(void) | |
135 | { | |
136 | phys_map_nodes_nb = 0; | |
137 | } | |
138 | ||
92e873b9 | 139 | |
a8170e5e AK |
140 | static void phys_page_set_level(PhysPageEntry *lp, hwaddr *index, |
141 | hwaddr *nb, uint16_t leaf, | |
2999097b | 142 | int level) |
f7bf5461 AK |
143 | { |
144 | PhysPageEntry *p; | |
145 | int i; | |
a8170e5e | 146 | hwaddr step = (hwaddr)1 << (level * L2_BITS); |
108c49b8 | 147 | |
07f07b31 | 148 | if (!lp->is_leaf && lp->ptr == PHYS_MAP_NODE_NIL) { |
c19e8800 AK |
149 | lp->ptr = phys_map_node_alloc(); |
150 | p = phys_map_nodes[lp->ptr]; | |
f7bf5461 AK |
151 | if (level == 0) { |
152 | for (i = 0; i < L2_SIZE; i++) { | |
07f07b31 | 153 | p[i].is_leaf = 1; |
c19e8800 | 154 | p[i].ptr = phys_section_unassigned; |
4346ae3e | 155 | } |
67c4d23c | 156 | } |
f7bf5461 | 157 | } else { |
c19e8800 | 158 | p = phys_map_nodes[lp->ptr]; |
92e873b9 | 159 | } |
2999097b | 160 | lp = &p[(*index >> (level * L2_BITS)) & (L2_SIZE - 1)]; |
f7bf5461 | 161 | |
2999097b | 162 | while (*nb && lp < &p[L2_SIZE]) { |
07f07b31 AK |
163 | if ((*index & (step - 1)) == 0 && *nb >= step) { |
164 | lp->is_leaf = true; | |
c19e8800 | 165 | lp->ptr = leaf; |
07f07b31 AK |
166 | *index += step; |
167 | *nb -= step; | |
2999097b AK |
168 | } else { |
169 | phys_page_set_level(lp, index, nb, leaf, level - 1); | |
170 | } | |
171 | ++lp; | |
f7bf5461 AK |
172 | } |
173 | } | |
174 | ||
ac1970fb | 175 | static void phys_page_set(AddressSpaceDispatch *d, |
a8170e5e | 176 | hwaddr index, hwaddr nb, |
2999097b | 177 | uint16_t leaf) |
f7bf5461 | 178 | { |
2999097b | 179 | /* Wildly overreserve - it doesn't matter much. */ |
07f07b31 | 180 | phys_map_node_reserve(3 * P_L2_LEVELS); |
5cd2c5b6 | 181 | |
ac1970fb | 182 | phys_page_set_level(&d->phys_map, &index, &nb, leaf, P_L2_LEVELS - 1); |
92e873b9 FB |
183 | } |
184 | ||
a8170e5e | 185 | MemoryRegionSection *phys_page_find(AddressSpaceDispatch *d, hwaddr index) |
92e873b9 | 186 | { |
ac1970fb | 187 | PhysPageEntry lp = d->phys_map; |
31ab2b4a AK |
188 | PhysPageEntry *p; |
189 | int i; | |
31ab2b4a | 190 | uint16_t s_index = phys_section_unassigned; |
f1f6e3b8 | 191 | |
07f07b31 | 192 | for (i = P_L2_LEVELS - 1; i >= 0 && !lp.is_leaf; i--) { |
c19e8800 | 193 | if (lp.ptr == PHYS_MAP_NODE_NIL) { |
31ab2b4a AK |
194 | goto not_found; |
195 | } | |
c19e8800 | 196 | p = phys_map_nodes[lp.ptr]; |
31ab2b4a | 197 | lp = p[(index >> (i * L2_BITS)) & (L2_SIZE - 1)]; |
5312bd8b | 198 | } |
31ab2b4a | 199 | |
c19e8800 | 200 | s_index = lp.ptr; |
31ab2b4a | 201 | not_found: |
f3705d53 AK |
202 | return &phys_sections[s_index]; |
203 | } | |
204 | ||
e5548617 BS |
205 | bool memory_region_is_unassigned(MemoryRegion *mr) |
206 | { | |
207 | return mr != &io_mem_ram && mr != &io_mem_rom | |
208 | && mr != &io_mem_notdirty && !mr->rom_device | |
5b6dd868 | 209 | && mr != &io_mem_watch; |
fd6ce8f6 | 210 | } |
5b6dd868 | 211 | #endif |
fd6ce8f6 | 212 | |
5b6dd868 | 213 | void cpu_exec_init_all(void) |
fdbb84d1 | 214 | { |
5b6dd868 | 215 | #if !defined(CONFIG_USER_ONLY) |
b2a8658e | 216 | qemu_mutex_init(&ram_list.mutex); |
5b6dd868 BS |
217 | memory_map_init(); |
218 | io_mem_init(); | |
fdbb84d1 | 219 | #endif |
5b6dd868 | 220 | } |
fdbb84d1 | 221 | |
b170fce3 | 222 | #if !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
223 | |
224 | static int cpu_common_post_load(void *opaque, int version_id) | |
fd6ce8f6 | 225 | { |
259186a7 | 226 | CPUState *cpu = opaque; |
a513fe19 | 227 | |
5b6dd868 BS |
228 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
229 | version_id is increased. */ | |
259186a7 AF |
230 | cpu->interrupt_request &= ~0x01; |
231 | tlb_flush(cpu->env_ptr, 1); | |
5b6dd868 BS |
232 | |
233 | return 0; | |
a513fe19 | 234 | } |
7501267e | 235 | |
5b6dd868 BS |
236 | static const VMStateDescription vmstate_cpu_common = { |
237 | .name = "cpu_common", | |
238 | .version_id = 1, | |
239 | .minimum_version_id = 1, | |
240 | .minimum_version_id_old = 1, | |
241 | .post_load = cpu_common_post_load, | |
242 | .fields = (VMStateField []) { | |
259186a7 AF |
243 | VMSTATE_UINT32(halted, CPUState), |
244 | VMSTATE_UINT32(interrupt_request, CPUState), | |
5b6dd868 BS |
245 | VMSTATE_END_OF_LIST() |
246 | } | |
247 | }; | |
b170fce3 AF |
248 | #else |
249 | #define vmstate_cpu_common vmstate_dummy | |
5b6dd868 | 250 | #endif |
ea041c0e | 251 | |
38d8f5c8 | 252 | CPUState *qemu_get_cpu(int index) |
ea041c0e | 253 | { |
5b6dd868 | 254 | CPUArchState *env = first_cpu; |
38d8f5c8 | 255 | CPUState *cpu = NULL; |
ea041c0e | 256 | |
5b6dd868 | 257 | while (env) { |
55e5c285 AF |
258 | cpu = ENV_GET_CPU(env); |
259 | if (cpu->cpu_index == index) { | |
5b6dd868 | 260 | break; |
55e5c285 | 261 | } |
5b6dd868 | 262 | env = env->next_cpu; |
ea041c0e | 263 | } |
5b6dd868 | 264 | |
d76fddae | 265 | return env ? cpu : NULL; |
ea041c0e FB |
266 | } |
267 | ||
5b6dd868 | 268 | void cpu_exec_init(CPUArchState *env) |
ea041c0e | 269 | { |
5b6dd868 | 270 | CPUState *cpu = ENV_GET_CPU(env); |
b170fce3 | 271 | CPUClass *cc = CPU_GET_CLASS(cpu); |
5b6dd868 BS |
272 | CPUArchState **penv; |
273 | int cpu_index; | |
274 | ||
275 | #if defined(CONFIG_USER_ONLY) | |
276 | cpu_list_lock(); | |
277 | #endif | |
278 | env->next_cpu = NULL; | |
279 | penv = &first_cpu; | |
280 | cpu_index = 0; | |
281 | while (*penv != NULL) { | |
282 | penv = &(*penv)->next_cpu; | |
283 | cpu_index++; | |
284 | } | |
55e5c285 | 285 | cpu->cpu_index = cpu_index; |
1b1ed8dc | 286 | cpu->numa_node = 0; |
5b6dd868 BS |
287 | QTAILQ_INIT(&env->breakpoints); |
288 | QTAILQ_INIT(&env->watchpoints); | |
289 | #ifndef CONFIG_USER_ONLY | |
290 | cpu->thread_id = qemu_get_thread_id(); | |
291 | #endif | |
292 | *penv = env; | |
293 | #if defined(CONFIG_USER_ONLY) | |
294 | cpu_list_unlock(); | |
295 | #endif | |
259186a7 | 296 | vmstate_register(NULL, cpu_index, &vmstate_cpu_common, cpu); |
b170fce3 | 297 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
5b6dd868 BS |
298 | register_savevm(NULL, "cpu", cpu_index, CPU_SAVE_VERSION, |
299 | cpu_save, cpu_load, env); | |
b170fce3 | 300 | assert(cc->vmsd == NULL); |
5b6dd868 | 301 | #endif |
b170fce3 AF |
302 | if (cc->vmsd != NULL) { |
303 | vmstate_register(NULL, cpu_index, cc->vmsd, cpu); | |
304 | } | |
ea041c0e FB |
305 | } |
306 | ||
1fddef4b | 307 | #if defined(TARGET_HAS_ICE) |
94df27fd | 308 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 309 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
94df27fd PB |
310 | { |
311 | tb_invalidate_phys_page_range(pc, pc + 1, 0); | |
312 | } | |
313 | #else | |
1e7855a5 MF |
314 | static void breakpoint_invalidate(CPUArchState *env, target_ulong pc) |
315 | { | |
9d70c4b7 MF |
316 | tb_invalidate_phys_addr(cpu_get_phys_page_debug(env, pc) | |
317 | (pc & ~TARGET_PAGE_MASK)); | |
1e7855a5 | 318 | } |
c27004ec | 319 | #endif |
94df27fd | 320 | #endif /* TARGET_HAS_ICE */ |
d720b93d | 321 | |
c527ee8f | 322 | #if defined(CONFIG_USER_ONLY) |
9349b4f9 | 323 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
c527ee8f PB |
324 | |
325 | { | |
326 | } | |
327 | ||
9349b4f9 | 328 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
c527ee8f PB |
329 | int flags, CPUWatchpoint **watchpoint) |
330 | { | |
331 | return -ENOSYS; | |
332 | } | |
333 | #else | |
6658ffb8 | 334 | /* Add a watchpoint. */ |
9349b4f9 | 335 | int cpu_watchpoint_insert(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 336 | int flags, CPUWatchpoint **watchpoint) |
6658ffb8 | 337 | { |
b4051334 | 338 | target_ulong len_mask = ~(len - 1); |
c0ce998e | 339 | CPUWatchpoint *wp; |
6658ffb8 | 340 | |
b4051334 | 341 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
0dc23828 MF |
342 | if ((len & (len - 1)) || (addr & ~len_mask) || |
343 | len == 0 || len > TARGET_PAGE_SIZE) { | |
b4051334 AL |
344 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " |
345 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); | |
346 | return -EINVAL; | |
347 | } | |
7267c094 | 348 | wp = g_malloc(sizeof(*wp)); |
a1d1bb31 AL |
349 | |
350 | wp->vaddr = addr; | |
b4051334 | 351 | wp->len_mask = len_mask; |
a1d1bb31 AL |
352 | wp->flags = flags; |
353 | ||
2dc9f411 | 354 | /* keep all GDB-injected watchpoints in front */ |
c0ce998e | 355 | if (flags & BP_GDB) |
72cf2d4f | 356 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
c0ce998e | 357 | else |
72cf2d4f | 358 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
6658ffb8 | 359 | |
6658ffb8 | 360 | tlb_flush_page(env, addr); |
a1d1bb31 AL |
361 | |
362 | if (watchpoint) | |
363 | *watchpoint = wp; | |
364 | return 0; | |
6658ffb8 PB |
365 | } |
366 | ||
a1d1bb31 | 367 | /* Remove a specific watchpoint. */ |
9349b4f9 | 368 | int cpu_watchpoint_remove(CPUArchState *env, target_ulong addr, target_ulong len, |
a1d1bb31 | 369 | int flags) |
6658ffb8 | 370 | { |
b4051334 | 371 | target_ulong len_mask = ~(len - 1); |
a1d1bb31 | 372 | CPUWatchpoint *wp; |
6658ffb8 | 373 | |
72cf2d4f | 374 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 | 375 | if (addr == wp->vaddr && len_mask == wp->len_mask |
6e140f28 | 376 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
a1d1bb31 | 377 | cpu_watchpoint_remove_by_ref(env, wp); |
6658ffb8 PB |
378 | return 0; |
379 | } | |
380 | } | |
a1d1bb31 | 381 | return -ENOENT; |
6658ffb8 PB |
382 | } |
383 | ||
a1d1bb31 | 384 | /* Remove a specific watchpoint by reference. */ |
9349b4f9 | 385 | void cpu_watchpoint_remove_by_ref(CPUArchState *env, CPUWatchpoint *watchpoint) |
a1d1bb31 | 386 | { |
72cf2d4f | 387 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
7d03f82f | 388 | |
a1d1bb31 AL |
389 | tlb_flush_page(env, watchpoint->vaddr); |
390 | ||
7267c094 | 391 | g_free(watchpoint); |
a1d1bb31 AL |
392 | } |
393 | ||
394 | /* Remove all matching watchpoints. */ | |
9349b4f9 | 395 | void cpu_watchpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 | 396 | { |
c0ce998e | 397 | CPUWatchpoint *wp, *next; |
a1d1bb31 | 398 | |
72cf2d4f | 399 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
a1d1bb31 AL |
400 | if (wp->flags & mask) |
401 | cpu_watchpoint_remove_by_ref(env, wp); | |
c0ce998e | 402 | } |
7d03f82f | 403 | } |
c527ee8f | 404 | #endif |
7d03f82f | 405 | |
a1d1bb31 | 406 | /* Add a breakpoint. */ |
9349b4f9 | 407 | int cpu_breakpoint_insert(CPUArchState *env, target_ulong pc, int flags, |
a1d1bb31 | 408 | CPUBreakpoint **breakpoint) |
4c3a88a2 | 409 | { |
1fddef4b | 410 | #if defined(TARGET_HAS_ICE) |
c0ce998e | 411 | CPUBreakpoint *bp; |
3b46e624 | 412 | |
7267c094 | 413 | bp = g_malloc(sizeof(*bp)); |
4c3a88a2 | 414 | |
a1d1bb31 AL |
415 | bp->pc = pc; |
416 | bp->flags = flags; | |
417 | ||
2dc9f411 | 418 | /* keep all GDB-injected breakpoints in front */ |
c0ce998e | 419 | if (flags & BP_GDB) |
72cf2d4f | 420 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
c0ce998e | 421 | else |
72cf2d4f | 422 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
3b46e624 | 423 | |
d720b93d | 424 | breakpoint_invalidate(env, pc); |
a1d1bb31 AL |
425 | |
426 | if (breakpoint) | |
427 | *breakpoint = bp; | |
4c3a88a2 FB |
428 | return 0; |
429 | #else | |
a1d1bb31 | 430 | return -ENOSYS; |
4c3a88a2 FB |
431 | #endif |
432 | } | |
433 | ||
a1d1bb31 | 434 | /* Remove a specific breakpoint. */ |
9349b4f9 | 435 | int cpu_breakpoint_remove(CPUArchState *env, target_ulong pc, int flags) |
a1d1bb31 | 436 | { |
7d03f82f | 437 | #if defined(TARGET_HAS_ICE) |
a1d1bb31 AL |
438 | CPUBreakpoint *bp; |
439 | ||
72cf2d4f | 440 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
a1d1bb31 AL |
441 | if (bp->pc == pc && bp->flags == flags) { |
442 | cpu_breakpoint_remove_by_ref(env, bp); | |
443 | return 0; | |
444 | } | |
7d03f82f | 445 | } |
a1d1bb31 AL |
446 | return -ENOENT; |
447 | #else | |
448 | return -ENOSYS; | |
7d03f82f EI |
449 | #endif |
450 | } | |
451 | ||
a1d1bb31 | 452 | /* Remove a specific breakpoint by reference. */ |
9349b4f9 | 453 | void cpu_breakpoint_remove_by_ref(CPUArchState *env, CPUBreakpoint *breakpoint) |
4c3a88a2 | 454 | { |
1fddef4b | 455 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 456 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
d720b93d | 457 | |
a1d1bb31 AL |
458 | breakpoint_invalidate(env, breakpoint->pc); |
459 | ||
7267c094 | 460 | g_free(breakpoint); |
a1d1bb31 AL |
461 | #endif |
462 | } | |
463 | ||
464 | /* Remove all matching breakpoints. */ | |
9349b4f9 | 465 | void cpu_breakpoint_remove_all(CPUArchState *env, int mask) |
a1d1bb31 AL |
466 | { |
467 | #if defined(TARGET_HAS_ICE) | |
c0ce998e | 468 | CPUBreakpoint *bp, *next; |
a1d1bb31 | 469 | |
72cf2d4f | 470 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
a1d1bb31 AL |
471 | if (bp->flags & mask) |
472 | cpu_breakpoint_remove_by_ref(env, bp); | |
c0ce998e | 473 | } |
4c3a88a2 FB |
474 | #endif |
475 | } | |
476 | ||
c33a346e FB |
477 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
478 | CPU loop after each instruction */ | |
9349b4f9 | 479 | void cpu_single_step(CPUArchState *env, int enabled) |
c33a346e | 480 | { |
1fddef4b | 481 | #if defined(TARGET_HAS_ICE) |
c33a346e FB |
482 | if (env->singlestep_enabled != enabled) { |
483 | env->singlestep_enabled = enabled; | |
e22a25c9 AL |
484 | if (kvm_enabled()) |
485 | kvm_update_guest_debug(env, 0); | |
486 | else { | |
ccbb4d44 | 487 | /* must flush all the translated code to avoid inconsistencies */ |
e22a25c9 AL |
488 | /* XXX: only flush what is necessary */ |
489 | tb_flush(env); | |
490 | } | |
c33a346e FB |
491 | } |
492 | #endif | |
493 | } | |
494 | ||
9349b4f9 | 495 | void cpu_reset_interrupt(CPUArchState *env, int mask) |
b54ad049 | 496 | { |
259186a7 AF |
497 | CPUState *cpu = ENV_GET_CPU(env); |
498 | ||
499 | cpu->interrupt_request &= ~mask; | |
b54ad049 FB |
500 | } |
501 | ||
9349b4f9 | 502 | void cpu_exit(CPUArchState *env) |
3098dba0 | 503 | { |
fcd7d003 AF |
504 | CPUState *cpu = ENV_GET_CPU(env); |
505 | ||
506 | cpu->exit_request = 1; | |
378df4b2 | 507 | cpu->tcg_exit_req = 1; |
3098dba0 AJ |
508 | } |
509 | ||
9349b4f9 | 510 | void cpu_abort(CPUArchState *env, const char *fmt, ...) |
7501267e FB |
511 | { |
512 | va_list ap; | |
493ae1f0 | 513 | va_list ap2; |
7501267e FB |
514 | |
515 | va_start(ap, fmt); | |
493ae1f0 | 516 | va_copy(ap2, ap); |
7501267e FB |
517 | fprintf(stderr, "qemu: fatal: "); |
518 | vfprintf(stderr, fmt, ap); | |
519 | fprintf(stderr, "\n"); | |
6fd2a026 | 520 | cpu_dump_state(env, stderr, fprintf, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
93fcfe39 AL |
521 | if (qemu_log_enabled()) { |
522 | qemu_log("qemu: fatal: "); | |
523 | qemu_log_vprintf(fmt, ap2); | |
524 | qemu_log("\n"); | |
6fd2a026 | 525 | log_cpu_state(env, CPU_DUMP_FPU | CPU_DUMP_CCOP); |
31b1a7b4 | 526 | qemu_log_flush(); |
93fcfe39 | 527 | qemu_log_close(); |
924edcae | 528 | } |
493ae1f0 | 529 | va_end(ap2); |
f9373291 | 530 | va_end(ap); |
fd052bf6 RV |
531 | #if defined(CONFIG_USER_ONLY) |
532 | { | |
533 | struct sigaction act; | |
534 | sigfillset(&act.sa_mask); | |
535 | act.sa_handler = SIG_DFL; | |
536 | sigaction(SIGABRT, &act, NULL); | |
537 | } | |
538 | #endif | |
7501267e FB |
539 | abort(); |
540 | } | |
541 | ||
9349b4f9 | 542 | CPUArchState *cpu_copy(CPUArchState *env) |
c5be9f08 | 543 | { |
9349b4f9 AF |
544 | CPUArchState *new_env = cpu_init(env->cpu_model_str); |
545 | CPUArchState *next_cpu = new_env->next_cpu; | |
5a38f081 AL |
546 | #if defined(TARGET_HAS_ICE) |
547 | CPUBreakpoint *bp; | |
548 | CPUWatchpoint *wp; | |
549 | #endif | |
550 | ||
9349b4f9 | 551 | memcpy(new_env, env, sizeof(CPUArchState)); |
5a38f081 | 552 | |
55e5c285 | 553 | /* Preserve chaining. */ |
c5be9f08 | 554 | new_env->next_cpu = next_cpu; |
5a38f081 AL |
555 | |
556 | /* Clone all break/watchpoints. | |
557 | Note: Once we support ptrace with hw-debug register access, make sure | |
558 | BP_CPU break/watchpoints are handled correctly on clone. */ | |
72cf2d4f BS |
559 | QTAILQ_INIT(&env->breakpoints); |
560 | QTAILQ_INIT(&env->watchpoints); | |
5a38f081 | 561 | #if defined(TARGET_HAS_ICE) |
72cf2d4f | 562 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
5a38f081 AL |
563 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
564 | } | |
72cf2d4f | 565 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
5a38f081 AL |
566 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
567 | wp->flags, NULL); | |
568 | } | |
569 | #endif | |
570 | ||
c5be9f08 TS |
571 | return new_env; |
572 | } | |
573 | ||
0124311e | 574 | #if !defined(CONFIG_USER_ONLY) |
d24981d3 JQ |
575 | static void tlb_reset_dirty_range_all(ram_addr_t start, ram_addr_t end, |
576 | uintptr_t length) | |
577 | { | |
578 | uintptr_t start1; | |
579 | ||
580 | /* we modify the TLB cache so that the dirty bit will be set again | |
581 | when accessing the range */ | |
582 | start1 = (uintptr_t)qemu_safe_ram_ptr(start); | |
583 | /* Check that we don't span multiple blocks - this breaks the | |
584 | address comparisons below. */ | |
585 | if ((uintptr_t)qemu_safe_ram_ptr(end - 1) - start1 | |
586 | != (end - 1) - start) { | |
587 | abort(); | |
588 | } | |
589 | cpu_tlb_reset_dirty_all(start1, length); | |
590 | ||
591 | } | |
592 | ||
5579c7f3 | 593 | /* Note: start and end must be within the same ram block. */ |
c227f099 | 594 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
0a962c02 | 595 | int dirty_flags) |
1ccde1cb | 596 | { |
d24981d3 | 597 | uintptr_t length; |
1ccde1cb FB |
598 | |
599 | start &= TARGET_PAGE_MASK; | |
600 | end = TARGET_PAGE_ALIGN(end); | |
601 | ||
602 | length = end - start; | |
603 | if (length == 0) | |
604 | return; | |
f7c11b53 | 605 | cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); |
f23db169 | 606 | |
d24981d3 JQ |
607 | if (tcg_enabled()) { |
608 | tlb_reset_dirty_range_all(start, end, length); | |
5579c7f3 | 609 | } |
1ccde1cb FB |
610 | } |
611 | ||
8b9c99d9 | 612 | static int cpu_physical_memory_set_dirty_tracking(int enable) |
74576198 | 613 | { |
f6f3fbca | 614 | int ret = 0; |
74576198 | 615 | in_migration = enable; |
f6f3fbca | 616 | return ret; |
74576198 AL |
617 | } |
618 | ||
a8170e5e | 619 | hwaddr memory_region_section_get_iotlb(CPUArchState *env, |
e5548617 BS |
620 | MemoryRegionSection *section, |
621 | target_ulong vaddr, | |
a8170e5e | 622 | hwaddr paddr, |
e5548617 BS |
623 | int prot, |
624 | target_ulong *address) | |
625 | { | |
a8170e5e | 626 | hwaddr iotlb; |
e5548617 BS |
627 | CPUWatchpoint *wp; |
628 | ||
cc5bea60 | 629 | if (memory_region_is_ram(section->mr)) { |
e5548617 BS |
630 | /* Normal RAM. */ |
631 | iotlb = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) | |
cc5bea60 | 632 | + memory_region_section_addr(section, paddr); |
e5548617 BS |
633 | if (!section->readonly) { |
634 | iotlb |= phys_section_notdirty; | |
635 | } else { | |
636 | iotlb |= phys_section_rom; | |
637 | } | |
638 | } else { | |
639 | /* IO handlers are currently passed a physical address. | |
640 | It would be nice to pass an offset from the base address | |
641 | of that region. This would avoid having to special case RAM, | |
642 | and avoid full address decoding in every device. | |
643 | We can't use the high bits of pd for this because | |
644 | IO_MEM_ROMD uses these as a ram address. */ | |
645 | iotlb = section - phys_sections; | |
cc5bea60 | 646 | iotlb += memory_region_section_addr(section, paddr); |
e5548617 BS |
647 | } |
648 | ||
649 | /* Make accesses to pages with watchpoints go via the | |
650 | watchpoint trap routines. */ | |
651 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { | |
652 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { | |
653 | /* Avoid trapping reads of pages with a write breakpoint. */ | |
654 | if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) { | |
655 | iotlb = phys_section_watch + paddr; | |
656 | *address |= TLB_MMIO; | |
657 | break; | |
658 | } | |
659 | } | |
660 | } | |
661 | ||
662 | return iotlb; | |
663 | } | |
9fa3e853 FB |
664 | #endif /* defined(CONFIG_USER_ONLY) */ |
665 | ||
e2eef170 | 666 | #if !defined(CONFIG_USER_ONLY) |
8da3ff18 | 667 | |
c04b2b78 PB |
668 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
669 | typedef struct subpage_t { | |
70c68e44 | 670 | MemoryRegion iomem; |
a8170e5e | 671 | hwaddr base; |
5312bd8b | 672 | uint16_t sub_section[TARGET_PAGE_SIZE]; |
c04b2b78 PB |
673 | } subpage_t; |
674 | ||
c227f099 | 675 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 676 | uint16_t section); |
a8170e5e | 677 | static subpage_t *subpage_init(hwaddr base); |
5312bd8b | 678 | static void destroy_page_desc(uint16_t section_index) |
54688b1e | 679 | { |
5312bd8b AK |
680 | MemoryRegionSection *section = &phys_sections[section_index]; |
681 | MemoryRegion *mr = section->mr; | |
54688b1e AK |
682 | |
683 | if (mr->subpage) { | |
684 | subpage_t *subpage = container_of(mr, subpage_t, iomem); | |
685 | memory_region_destroy(&subpage->iomem); | |
686 | g_free(subpage); | |
687 | } | |
688 | } | |
689 | ||
4346ae3e | 690 | static void destroy_l2_mapping(PhysPageEntry *lp, unsigned level) |
54688b1e AK |
691 | { |
692 | unsigned i; | |
d6f2ea22 | 693 | PhysPageEntry *p; |
54688b1e | 694 | |
c19e8800 | 695 | if (lp->ptr == PHYS_MAP_NODE_NIL) { |
54688b1e AK |
696 | return; |
697 | } | |
698 | ||
c19e8800 | 699 | p = phys_map_nodes[lp->ptr]; |
4346ae3e | 700 | for (i = 0; i < L2_SIZE; ++i) { |
07f07b31 | 701 | if (!p[i].is_leaf) { |
54688b1e | 702 | destroy_l2_mapping(&p[i], level - 1); |
4346ae3e | 703 | } else { |
c19e8800 | 704 | destroy_page_desc(p[i].ptr); |
54688b1e | 705 | } |
54688b1e | 706 | } |
07f07b31 | 707 | lp->is_leaf = 0; |
c19e8800 | 708 | lp->ptr = PHYS_MAP_NODE_NIL; |
54688b1e AK |
709 | } |
710 | ||
ac1970fb | 711 | static void destroy_all_mappings(AddressSpaceDispatch *d) |
54688b1e | 712 | { |
ac1970fb | 713 | destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1); |
d6f2ea22 | 714 | phys_map_nodes_reset(); |
54688b1e AK |
715 | } |
716 | ||
5312bd8b AK |
717 | static uint16_t phys_section_add(MemoryRegionSection *section) |
718 | { | |
719 | if (phys_sections_nb == phys_sections_nb_alloc) { | |
720 | phys_sections_nb_alloc = MAX(phys_sections_nb_alloc * 2, 16); | |
721 | phys_sections = g_renew(MemoryRegionSection, phys_sections, | |
722 | phys_sections_nb_alloc); | |
723 | } | |
724 | phys_sections[phys_sections_nb] = *section; | |
725 | return phys_sections_nb++; | |
726 | } | |
727 | ||
728 | static void phys_sections_clear(void) | |
729 | { | |
730 | phys_sections_nb = 0; | |
731 | } | |
732 | ||
ac1970fb | 733 | static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *section) |
0f0cb164 AK |
734 | { |
735 | subpage_t *subpage; | |
a8170e5e | 736 | hwaddr base = section->offset_within_address_space |
0f0cb164 | 737 | & TARGET_PAGE_MASK; |
ac1970fb | 738 | MemoryRegionSection *existing = phys_page_find(d, base >> TARGET_PAGE_BITS); |
0f0cb164 AK |
739 | MemoryRegionSection subsection = { |
740 | .offset_within_address_space = base, | |
741 | .size = TARGET_PAGE_SIZE, | |
742 | }; | |
a8170e5e | 743 | hwaddr start, end; |
0f0cb164 | 744 | |
f3705d53 | 745 | assert(existing->mr->subpage || existing->mr == &io_mem_unassigned); |
0f0cb164 | 746 | |
f3705d53 | 747 | if (!(existing->mr->subpage)) { |
0f0cb164 AK |
748 | subpage = subpage_init(base); |
749 | subsection.mr = &subpage->iomem; | |
ac1970fb | 750 | phys_page_set(d, base >> TARGET_PAGE_BITS, 1, |
2999097b | 751 | phys_section_add(&subsection)); |
0f0cb164 | 752 | } else { |
f3705d53 | 753 | subpage = container_of(existing->mr, subpage_t, iomem); |
0f0cb164 AK |
754 | } |
755 | start = section->offset_within_address_space & ~TARGET_PAGE_MASK; | |
adb2a9b5 | 756 | end = start + section->size - 1; |
0f0cb164 AK |
757 | subpage_register(subpage, start, end, phys_section_add(section)); |
758 | } | |
759 | ||
760 | ||
ac1970fb | 761 | static void register_multipage(AddressSpaceDispatch *d, MemoryRegionSection *section) |
33417e70 | 762 | { |
a8170e5e | 763 | hwaddr start_addr = section->offset_within_address_space; |
dd81124b | 764 | ram_addr_t size = section->size; |
a8170e5e | 765 | hwaddr addr; |
5312bd8b | 766 | uint16_t section_index = phys_section_add(section); |
dd81124b | 767 | |
3b8e6a2d | 768 | assert(size); |
f6f3fbca | 769 | |
3b8e6a2d | 770 | addr = start_addr; |
ac1970fb | 771 | phys_page_set(d, addr >> TARGET_PAGE_BITS, size >> TARGET_PAGE_BITS, |
2999097b | 772 | section_index); |
33417e70 FB |
773 | } |
774 | ||
ac1970fb | 775 | static void mem_add(MemoryListener *listener, MemoryRegionSection *section) |
0f0cb164 | 776 | { |
ac1970fb | 777 | AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); |
0f0cb164 AK |
778 | MemoryRegionSection now = *section, remain = *section; |
779 | ||
780 | if ((now.offset_within_address_space & ~TARGET_PAGE_MASK) | |
781 | || (now.size < TARGET_PAGE_SIZE)) { | |
782 | now.size = MIN(TARGET_PAGE_ALIGN(now.offset_within_address_space) | |
783 | - now.offset_within_address_space, | |
784 | now.size); | |
ac1970fb | 785 | register_subpage(d, &now); |
0f0cb164 AK |
786 | remain.size -= now.size; |
787 | remain.offset_within_address_space += now.size; | |
788 | remain.offset_within_region += now.size; | |
789 | } | |
69b67646 TH |
790 | while (remain.size >= TARGET_PAGE_SIZE) { |
791 | now = remain; | |
792 | if (remain.offset_within_region & ~TARGET_PAGE_MASK) { | |
793 | now.size = TARGET_PAGE_SIZE; | |
ac1970fb | 794 | register_subpage(d, &now); |
69b67646 TH |
795 | } else { |
796 | now.size &= TARGET_PAGE_MASK; | |
ac1970fb | 797 | register_multipage(d, &now); |
69b67646 | 798 | } |
0f0cb164 AK |
799 | remain.size -= now.size; |
800 | remain.offset_within_address_space += now.size; | |
801 | remain.offset_within_region += now.size; | |
802 | } | |
803 | now = remain; | |
804 | if (now.size) { | |
ac1970fb | 805 | register_subpage(d, &now); |
0f0cb164 AK |
806 | } |
807 | } | |
808 | ||
62a2744c SY |
809 | void qemu_flush_coalesced_mmio_buffer(void) |
810 | { | |
811 | if (kvm_enabled()) | |
812 | kvm_flush_coalesced_mmio_buffer(); | |
813 | } | |
814 | ||
b2a8658e UD |
815 | void qemu_mutex_lock_ramlist(void) |
816 | { | |
817 | qemu_mutex_lock(&ram_list.mutex); | |
818 | } | |
819 | ||
820 | void qemu_mutex_unlock_ramlist(void) | |
821 | { | |
822 | qemu_mutex_unlock(&ram_list.mutex); | |
823 | } | |
824 | ||
c902760f MT |
825 | #if defined(__linux__) && !defined(TARGET_S390X) |
826 | ||
827 | #include <sys/vfs.h> | |
828 | ||
829 | #define HUGETLBFS_MAGIC 0x958458f6 | |
830 | ||
831 | static long gethugepagesize(const char *path) | |
832 | { | |
833 | struct statfs fs; | |
834 | int ret; | |
835 | ||
836 | do { | |
9742bf26 | 837 | ret = statfs(path, &fs); |
c902760f MT |
838 | } while (ret != 0 && errno == EINTR); |
839 | ||
840 | if (ret != 0) { | |
9742bf26 YT |
841 | perror(path); |
842 | return 0; | |
c902760f MT |
843 | } |
844 | ||
845 | if (fs.f_type != HUGETLBFS_MAGIC) | |
9742bf26 | 846 | fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path); |
c902760f MT |
847 | |
848 | return fs.f_bsize; | |
849 | } | |
850 | ||
04b16653 AW |
851 | static void *file_ram_alloc(RAMBlock *block, |
852 | ram_addr_t memory, | |
853 | const char *path) | |
c902760f MT |
854 | { |
855 | char *filename; | |
856 | void *area; | |
857 | int fd; | |
858 | #ifdef MAP_POPULATE | |
859 | int flags; | |
860 | #endif | |
861 | unsigned long hpagesize; | |
862 | ||
863 | hpagesize = gethugepagesize(path); | |
864 | if (!hpagesize) { | |
9742bf26 | 865 | return NULL; |
c902760f MT |
866 | } |
867 | ||
868 | if (memory < hpagesize) { | |
869 | return NULL; | |
870 | } | |
871 | ||
872 | if (kvm_enabled() && !kvm_has_sync_mmu()) { | |
873 | fprintf(stderr, "host lacks kvm mmu notifiers, -mem-path unsupported\n"); | |
874 | return NULL; | |
875 | } | |
876 | ||
e4ada482 | 877 | filename = g_strdup_printf("%s/qemu_back_mem.XXXXXX", path); |
c902760f MT |
878 | |
879 | fd = mkstemp(filename); | |
880 | if (fd < 0) { | |
9742bf26 | 881 | perror("unable to create backing store for hugepages"); |
e4ada482 | 882 | g_free(filename); |
9742bf26 | 883 | return NULL; |
c902760f MT |
884 | } |
885 | unlink(filename); | |
e4ada482 | 886 | g_free(filename); |
c902760f MT |
887 | |
888 | memory = (memory+hpagesize-1) & ~(hpagesize-1); | |
889 | ||
890 | /* | |
891 | * ftruncate is not supported by hugetlbfs in older | |
892 | * hosts, so don't bother bailing out on errors. | |
893 | * If anything goes wrong with it under other filesystems, | |
894 | * mmap will fail. | |
895 | */ | |
896 | if (ftruncate(fd, memory)) | |
9742bf26 | 897 | perror("ftruncate"); |
c902760f MT |
898 | |
899 | #ifdef MAP_POPULATE | |
900 | /* NB: MAP_POPULATE won't exhaustively alloc all phys pages in the case | |
901 | * MAP_PRIVATE is requested. For mem_prealloc we mmap as MAP_SHARED | |
902 | * to sidestep this quirk. | |
903 | */ | |
904 | flags = mem_prealloc ? MAP_POPULATE | MAP_SHARED : MAP_PRIVATE; | |
905 | area = mmap(0, memory, PROT_READ | PROT_WRITE, flags, fd, 0); | |
906 | #else | |
907 | area = mmap(0, memory, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); | |
908 | #endif | |
909 | if (area == MAP_FAILED) { | |
9742bf26 YT |
910 | perror("file_ram_alloc: can't mmap RAM pages"); |
911 | close(fd); | |
912 | return (NULL); | |
c902760f | 913 | } |
04b16653 | 914 | block->fd = fd; |
c902760f MT |
915 | return area; |
916 | } | |
917 | #endif | |
918 | ||
d17b5288 | 919 | static ram_addr_t find_ram_offset(ram_addr_t size) |
04b16653 AW |
920 | { |
921 | RAMBlock *block, *next_block; | |
3e837b2c | 922 | ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX; |
04b16653 | 923 | |
a3161038 | 924 | if (QTAILQ_EMPTY(&ram_list.blocks)) |
04b16653 AW |
925 | return 0; |
926 | ||
a3161038 | 927 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
f15fbc4b | 928 | ram_addr_t end, next = RAM_ADDR_MAX; |
04b16653 AW |
929 | |
930 | end = block->offset + block->length; | |
931 | ||
a3161038 | 932 | QTAILQ_FOREACH(next_block, &ram_list.blocks, next) { |
04b16653 AW |
933 | if (next_block->offset >= end) { |
934 | next = MIN(next, next_block->offset); | |
935 | } | |
936 | } | |
937 | if (next - end >= size && next - end < mingap) { | |
3e837b2c | 938 | offset = end; |
04b16653 AW |
939 | mingap = next - end; |
940 | } | |
941 | } | |
3e837b2c AW |
942 | |
943 | if (offset == RAM_ADDR_MAX) { | |
944 | fprintf(stderr, "Failed to find gap of requested size: %" PRIu64 "\n", | |
945 | (uint64_t)size); | |
946 | abort(); | |
947 | } | |
948 | ||
04b16653 AW |
949 | return offset; |
950 | } | |
951 | ||
652d7ec2 | 952 | ram_addr_t last_ram_offset(void) |
d17b5288 AW |
953 | { |
954 | RAMBlock *block; | |
955 | ram_addr_t last = 0; | |
956 | ||
a3161038 | 957 | QTAILQ_FOREACH(block, &ram_list.blocks, next) |
d17b5288 AW |
958 | last = MAX(last, block->offset + block->length); |
959 | ||
960 | return last; | |
961 | } | |
962 | ||
ddb97f1d JB |
963 | static void qemu_ram_setup_dump(void *addr, ram_addr_t size) |
964 | { | |
965 | int ret; | |
966 | QemuOpts *machine_opts; | |
967 | ||
968 | /* Use MADV_DONTDUMP, if user doesn't want the guest memory in the core */ | |
969 | machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
970 | if (machine_opts && | |
971 | !qemu_opt_get_bool(machine_opts, "dump-guest-core", true)) { | |
972 | ret = qemu_madvise(addr, size, QEMU_MADV_DONTDUMP); | |
973 | if (ret) { | |
974 | perror("qemu_madvise"); | |
975 | fprintf(stderr, "madvise doesn't support MADV_DONTDUMP, " | |
976 | "but dump_guest_core=off specified\n"); | |
977 | } | |
978 | } | |
979 | } | |
980 | ||
c5705a77 | 981 | void qemu_ram_set_idstr(ram_addr_t addr, const char *name, DeviceState *dev) |
84b89d78 CM |
982 | { |
983 | RAMBlock *new_block, *block; | |
984 | ||
c5705a77 | 985 | new_block = NULL; |
a3161038 | 986 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 AK |
987 | if (block->offset == addr) { |
988 | new_block = block; | |
989 | break; | |
990 | } | |
991 | } | |
992 | assert(new_block); | |
993 | assert(!new_block->idstr[0]); | |
84b89d78 | 994 | |
09e5ab63 AL |
995 | if (dev) { |
996 | char *id = qdev_get_dev_path(dev); | |
84b89d78 CM |
997 | if (id) { |
998 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); | |
7267c094 | 999 | g_free(id); |
84b89d78 CM |
1000 | } |
1001 | } | |
1002 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); | |
1003 | ||
b2a8658e UD |
1004 | /* This assumes the iothread lock is taken here too. */ |
1005 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1006 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
c5705a77 | 1007 | if (block != new_block && !strcmp(block->idstr, new_block->idstr)) { |
84b89d78 CM |
1008 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
1009 | new_block->idstr); | |
1010 | abort(); | |
1011 | } | |
1012 | } | |
b2a8658e | 1013 | qemu_mutex_unlock_ramlist(); |
c5705a77 AK |
1014 | } |
1015 | ||
8490fc78 LC |
1016 | static int memory_try_enable_merging(void *addr, size_t len) |
1017 | { | |
1018 | QemuOpts *opts; | |
1019 | ||
1020 | opts = qemu_opts_find(qemu_find_opts("machine"), 0); | |
1021 | if (opts && !qemu_opt_get_bool(opts, "mem-merge", true)) { | |
1022 | /* disabled by the user */ | |
1023 | return 0; | |
1024 | } | |
1025 | ||
1026 | return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE); | |
1027 | } | |
1028 | ||
c5705a77 AK |
1029 | ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, |
1030 | MemoryRegion *mr) | |
1031 | { | |
abb26d63 | 1032 | RAMBlock *block, *new_block; |
c5705a77 AK |
1033 | |
1034 | size = TARGET_PAGE_ALIGN(size); | |
1035 | new_block = g_malloc0(sizeof(*new_block)); | |
84b89d78 | 1036 | |
b2a8658e UD |
1037 | /* This assumes the iothread lock is taken here too. */ |
1038 | qemu_mutex_lock_ramlist(); | |
7c637366 | 1039 | new_block->mr = mr; |
432d268c | 1040 | new_block->offset = find_ram_offset(size); |
6977dfe6 YT |
1041 | if (host) { |
1042 | new_block->host = host; | |
cd19cfa2 | 1043 | new_block->flags |= RAM_PREALLOC_MASK; |
6977dfe6 YT |
1044 | } else { |
1045 | if (mem_path) { | |
c902760f | 1046 | #if defined (__linux__) && !defined(TARGET_S390X) |
6977dfe6 YT |
1047 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
1048 | if (!new_block->host) { | |
1049 | new_block->host = qemu_vmalloc(size); | |
8490fc78 | 1050 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 1051 | } |
c902760f | 1052 | #else |
6977dfe6 YT |
1053 | fprintf(stderr, "-mem-path option unsupported\n"); |
1054 | exit(1); | |
c902760f | 1055 | #endif |
6977dfe6 | 1056 | } else { |
868bb33f | 1057 | if (xen_enabled()) { |
fce537d4 | 1058 | xen_ram_alloc(new_block->offset, size, mr); |
fdec9918 CB |
1059 | } else if (kvm_enabled()) { |
1060 | /* some s390/kvm configurations have special constraints */ | |
1061 | new_block->host = kvm_vmalloc(size); | |
432d268c JN |
1062 | } else { |
1063 | new_block->host = qemu_vmalloc(size); | |
1064 | } | |
8490fc78 | 1065 | memory_try_enable_merging(new_block->host, size); |
6977dfe6 | 1066 | } |
c902760f | 1067 | } |
94a6b54f PB |
1068 | new_block->length = size; |
1069 | ||
abb26d63 PB |
1070 | /* Keep the list sorted from biggest to smallest block. */ |
1071 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { | |
1072 | if (block->length < new_block->length) { | |
1073 | break; | |
1074 | } | |
1075 | } | |
1076 | if (block) { | |
1077 | QTAILQ_INSERT_BEFORE(block, new_block, next); | |
1078 | } else { | |
1079 | QTAILQ_INSERT_TAIL(&ram_list.blocks, new_block, next); | |
1080 | } | |
0d6d3c87 | 1081 | ram_list.mru_block = NULL; |
94a6b54f | 1082 | |
f798b07f | 1083 | ram_list.version++; |
b2a8658e | 1084 | qemu_mutex_unlock_ramlist(); |
f798b07f | 1085 | |
7267c094 | 1086 | ram_list.phys_dirty = g_realloc(ram_list.phys_dirty, |
04b16653 | 1087 | last_ram_offset() >> TARGET_PAGE_BITS); |
5fda043f IM |
1088 | memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), |
1089 | 0, size >> TARGET_PAGE_BITS); | |
1720aeee | 1090 | cpu_physical_memory_set_dirty_range(new_block->offset, size, 0xff); |
94a6b54f | 1091 | |
ddb97f1d | 1092 | qemu_ram_setup_dump(new_block->host, size); |
ad0b5321 | 1093 | qemu_madvise(new_block->host, size, QEMU_MADV_HUGEPAGE); |
ddb97f1d | 1094 | |
6f0437e8 JK |
1095 | if (kvm_enabled()) |
1096 | kvm_setup_guest_memory(new_block->host, size); | |
1097 | ||
94a6b54f PB |
1098 | return new_block->offset; |
1099 | } | |
e9a1ab19 | 1100 | |
c5705a77 | 1101 | ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr) |
6977dfe6 | 1102 | { |
c5705a77 | 1103 | return qemu_ram_alloc_from_ptr(size, NULL, mr); |
6977dfe6 YT |
1104 | } |
1105 | ||
1f2e98b6 AW |
1106 | void qemu_ram_free_from_ptr(ram_addr_t addr) |
1107 | { | |
1108 | RAMBlock *block; | |
1109 | ||
b2a8658e UD |
1110 | /* This assumes the iothread lock is taken here too. */ |
1111 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1112 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
1f2e98b6 | 1113 | if (addr == block->offset) { |
a3161038 | 1114 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1115 | ram_list.mru_block = NULL; |
f798b07f | 1116 | ram_list.version++; |
7267c094 | 1117 | g_free(block); |
b2a8658e | 1118 | break; |
1f2e98b6 AW |
1119 | } |
1120 | } | |
b2a8658e | 1121 | qemu_mutex_unlock_ramlist(); |
1f2e98b6 AW |
1122 | } |
1123 | ||
c227f099 | 1124 | void qemu_ram_free(ram_addr_t addr) |
e9a1ab19 | 1125 | { |
04b16653 AW |
1126 | RAMBlock *block; |
1127 | ||
b2a8658e UD |
1128 | /* This assumes the iothread lock is taken here too. */ |
1129 | qemu_mutex_lock_ramlist(); | |
a3161038 | 1130 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
04b16653 | 1131 | if (addr == block->offset) { |
a3161038 | 1132 | QTAILQ_REMOVE(&ram_list.blocks, block, next); |
0d6d3c87 | 1133 | ram_list.mru_block = NULL; |
f798b07f | 1134 | ram_list.version++; |
cd19cfa2 HY |
1135 | if (block->flags & RAM_PREALLOC_MASK) { |
1136 | ; | |
1137 | } else if (mem_path) { | |
04b16653 AW |
1138 | #if defined (__linux__) && !defined(TARGET_S390X) |
1139 | if (block->fd) { | |
1140 | munmap(block->host, block->length); | |
1141 | close(block->fd); | |
1142 | } else { | |
1143 | qemu_vfree(block->host); | |
1144 | } | |
fd28aa13 JK |
1145 | #else |
1146 | abort(); | |
04b16653 AW |
1147 | #endif |
1148 | } else { | |
1149 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
1150 | munmap(block->host, block->length); | |
1151 | #else | |
868bb33f | 1152 | if (xen_enabled()) { |
e41d7c69 | 1153 | xen_invalidate_map_cache_entry(block->host); |
432d268c JN |
1154 | } else { |
1155 | qemu_vfree(block->host); | |
1156 | } | |
04b16653 AW |
1157 | #endif |
1158 | } | |
7267c094 | 1159 | g_free(block); |
b2a8658e | 1160 | break; |
04b16653 AW |
1161 | } |
1162 | } | |
b2a8658e | 1163 | qemu_mutex_unlock_ramlist(); |
04b16653 | 1164 | |
e9a1ab19 FB |
1165 | } |
1166 | ||
cd19cfa2 HY |
1167 | #ifndef _WIN32 |
1168 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) | |
1169 | { | |
1170 | RAMBlock *block; | |
1171 | ram_addr_t offset; | |
1172 | int flags; | |
1173 | void *area, *vaddr; | |
1174 | ||
a3161038 | 1175 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
cd19cfa2 HY |
1176 | offset = addr - block->offset; |
1177 | if (offset < block->length) { | |
1178 | vaddr = block->host + offset; | |
1179 | if (block->flags & RAM_PREALLOC_MASK) { | |
1180 | ; | |
1181 | } else { | |
1182 | flags = MAP_FIXED; | |
1183 | munmap(vaddr, length); | |
1184 | if (mem_path) { | |
1185 | #if defined(__linux__) && !defined(TARGET_S390X) | |
1186 | if (block->fd) { | |
1187 | #ifdef MAP_POPULATE | |
1188 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : | |
1189 | MAP_PRIVATE; | |
1190 | #else | |
1191 | flags |= MAP_PRIVATE; | |
1192 | #endif | |
1193 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1194 | flags, block->fd, offset); | |
1195 | } else { | |
1196 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
1197 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1198 | flags, -1, 0); | |
1199 | } | |
fd28aa13 JK |
1200 | #else |
1201 | abort(); | |
cd19cfa2 HY |
1202 | #endif |
1203 | } else { | |
1204 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) | |
1205 | flags |= MAP_SHARED | MAP_ANONYMOUS; | |
1206 | area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE, | |
1207 | flags, -1, 0); | |
1208 | #else | |
1209 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; | |
1210 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, | |
1211 | flags, -1, 0); | |
1212 | #endif | |
1213 | } | |
1214 | if (area != vaddr) { | |
f15fbc4b AP |
1215 | fprintf(stderr, "Could not remap addr: " |
1216 | RAM_ADDR_FMT "@" RAM_ADDR_FMT "\n", | |
cd19cfa2 HY |
1217 | length, addr); |
1218 | exit(1); | |
1219 | } | |
8490fc78 | 1220 | memory_try_enable_merging(vaddr, length); |
ddb97f1d | 1221 | qemu_ram_setup_dump(vaddr, length); |
cd19cfa2 HY |
1222 | } |
1223 | return; | |
1224 | } | |
1225 | } | |
1226 | } | |
1227 | #endif /* !_WIN32 */ | |
1228 | ||
dc828ca1 | 1229 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
5579c7f3 PB |
1230 | With the exception of the softmmu code in this file, this should |
1231 | only be used for local memory (e.g. video ram) that the device owns, | |
1232 | and knows it isn't going to access beyond the end of the block. | |
1233 | ||
1234 | It should not be used for general purpose DMA. | |
1235 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. | |
1236 | */ | |
c227f099 | 1237 | void *qemu_get_ram_ptr(ram_addr_t addr) |
dc828ca1 | 1238 | { |
94a6b54f PB |
1239 | RAMBlock *block; |
1240 | ||
b2a8658e | 1241 | /* The list is protected by the iothread lock here. */ |
0d6d3c87 PB |
1242 | block = ram_list.mru_block; |
1243 | if (block && addr - block->offset < block->length) { | |
1244 | goto found; | |
1245 | } | |
a3161038 | 1246 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
f471a17e | 1247 | if (addr - block->offset < block->length) { |
0d6d3c87 | 1248 | goto found; |
f471a17e | 1249 | } |
94a6b54f | 1250 | } |
f471a17e AW |
1251 | |
1252 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1253 | abort(); | |
1254 | ||
0d6d3c87 PB |
1255 | found: |
1256 | ram_list.mru_block = block; | |
1257 | if (xen_enabled()) { | |
1258 | /* We need to check if the requested address is in the RAM | |
1259 | * because we don't want to map the entire memory in QEMU. | |
1260 | * In that case just map until the end of the page. | |
1261 | */ | |
1262 | if (block->offset == 0) { | |
1263 | return xen_map_cache(addr, 0, 0); | |
1264 | } else if (block->host == NULL) { | |
1265 | block->host = | |
1266 | xen_map_cache(block->offset, block->length, 1); | |
1267 | } | |
1268 | } | |
1269 | return block->host + (addr - block->offset); | |
dc828ca1 PB |
1270 | } |
1271 | ||
0d6d3c87 PB |
1272 | /* Return a host pointer to ram allocated with qemu_ram_alloc. Same as |
1273 | * qemu_get_ram_ptr but do not touch ram_list.mru_block. | |
1274 | * | |
1275 | * ??? Is this still necessary? | |
b2e0a138 | 1276 | */ |
8b9c99d9 | 1277 | static void *qemu_safe_ram_ptr(ram_addr_t addr) |
b2e0a138 MT |
1278 | { |
1279 | RAMBlock *block; | |
1280 | ||
b2a8658e | 1281 | /* The list is protected by the iothread lock here. */ |
a3161038 | 1282 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
b2e0a138 | 1283 | if (addr - block->offset < block->length) { |
868bb33f | 1284 | if (xen_enabled()) { |
432d268c JN |
1285 | /* We need to check if the requested address is in the RAM |
1286 | * because we don't want to map the entire memory in QEMU. | |
712c2b41 | 1287 | * In that case just map until the end of the page. |
432d268c JN |
1288 | */ |
1289 | if (block->offset == 0) { | |
e41d7c69 | 1290 | return xen_map_cache(addr, 0, 0); |
432d268c | 1291 | } else if (block->host == NULL) { |
e41d7c69 JK |
1292 | block->host = |
1293 | xen_map_cache(block->offset, block->length, 1); | |
432d268c JN |
1294 | } |
1295 | } | |
b2e0a138 MT |
1296 | return block->host + (addr - block->offset); |
1297 | } | |
1298 | } | |
1299 | ||
1300 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1301 | abort(); | |
1302 | ||
1303 | return NULL; | |
1304 | } | |
1305 | ||
38bee5dc SS |
1306 | /* Return a host pointer to guest's ram. Similar to qemu_get_ram_ptr |
1307 | * but takes a size argument */ | |
8b9c99d9 | 1308 | static void *qemu_ram_ptr_length(ram_addr_t addr, ram_addr_t *size) |
38bee5dc | 1309 | { |
8ab934f9 SS |
1310 | if (*size == 0) { |
1311 | return NULL; | |
1312 | } | |
868bb33f | 1313 | if (xen_enabled()) { |
e41d7c69 | 1314 | return xen_map_cache(addr, *size, 1); |
868bb33f | 1315 | } else { |
38bee5dc SS |
1316 | RAMBlock *block; |
1317 | ||
a3161038 | 1318 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
38bee5dc SS |
1319 | if (addr - block->offset < block->length) { |
1320 | if (addr - block->offset + *size > block->length) | |
1321 | *size = block->length - addr + block->offset; | |
1322 | return block->host + (addr - block->offset); | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); | |
1327 | abort(); | |
38bee5dc SS |
1328 | } |
1329 | } | |
1330 | ||
050a0ddf AP |
1331 | void qemu_put_ram_ptr(void *addr) |
1332 | { | |
1333 | trace_qemu_put_ram_ptr(addr); | |
050a0ddf AP |
1334 | } |
1335 | ||
e890261f | 1336 | int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
5579c7f3 | 1337 | { |
94a6b54f PB |
1338 | RAMBlock *block; |
1339 | uint8_t *host = ptr; | |
1340 | ||
868bb33f | 1341 | if (xen_enabled()) { |
e41d7c69 | 1342 | *ram_addr = xen_ram_addr_from_mapcache(ptr); |
712c2b41 SS |
1343 | return 0; |
1344 | } | |
1345 | ||
a3161038 | 1346 | QTAILQ_FOREACH(block, &ram_list.blocks, next) { |
432d268c JN |
1347 | /* This case append when the block is not mapped. */ |
1348 | if (block->host == NULL) { | |
1349 | continue; | |
1350 | } | |
f471a17e | 1351 | if (host - block->host < block->length) { |
e890261f MT |
1352 | *ram_addr = block->offset + (host - block->host); |
1353 | return 0; | |
f471a17e | 1354 | } |
94a6b54f | 1355 | } |
432d268c | 1356 | |
e890261f MT |
1357 | return -1; |
1358 | } | |
f471a17e | 1359 | |
e890261f MT |
1360 | /* Some of the softmmu routines need to translate from a host pointer |
1361 | (typically a TLB entry) back to a ram offset. */ | |
1362 | ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr) | |
1363 | { | |
1364 | ram_addr_t ram_addr; | |
f471a17e | 1365 | |
e890261f MT |
1366 | if (qemu_ram_addr_from_host(ptr, &ram_addr)) { |
1367 | fprintf(stderr, "Bad ram pointer %p\n", ptr); | |
1368 | abort(); | |
1369 | } | |
1370 | return ram_addr; | |
5579c7f3 PB |
1371 | } |
1372 | ||
a8170e5e | 1373 | static uint64_t unassigned_mem_read(void *opaque, hwaddr addr, |
0e0df1e2 | 1374 | unsigned size) |
e18231a3 BS |
1375 | { |
1376 | #ifdef DEBUG_UNASSIGNED | |
1377 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); | |
1378 | #endif | |
5b450407 | 1379 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 1380 | cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size); |
e18231a3 BS |
1381 | #endif |
1382 | return 0; | |
1383 | } | |
1384 | ||
a8170e5e | 1385 | static void unassigned_mem_write(void *opaque, hwaddr addr, |
0e0df1e2 | 1386 | uint64_t val, unsigned size) |
e18231a3 BS |
1387 | { |
1388 | #ifdef DEBUG_UNASSIGNED | |
0e0df1e2 | 1389 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%"PRIx64"\n", addr, val); |
e18231a3 | 1390 | #endif |
5b450407 | 1391 | #if defined(TARGET_ALPHA) || defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
0e0df1e2 | 1392 | cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size); |
67d3b957 | 1393 | #endif |
33417e70 FB |
1394 | } |
1395 | ||
0e0df1e2 AK |
1396 | static const MemoryRegionOps unassigned_mem_ops = { |
1397 | .read = unassigned_mem_read, | |
1398 | .write = unassigned_mem_write, | |
1399 | .endianness = DEVICE_NATIVE_ENDIAN, | |
1400 | }; | |
e18231a3 | 1401 | |
a8170e5e | 1402 | static uint64_t error_mem_read(void *opaque, hwaddr addr, |
0e0df1e2 | 1403 | unsigned size) |
e18231a3 | 1404 | { |
0e0df1e2 | 1405 | abort(); |
e18231a3 BS |
1406 | } |
1407 | ||
a8170e5e | 1408 | static void error_mem_write(void *opaque, hwaddr addr, |
0e0df1e2 | 1409 | uint64_t value, unsigned size) |
e18231a3 | 1410 | { |
0e0df1e2 | 1411 | abort(); |
33417e70 FB |
1412 | } |
1413 | ||
0e0df1e2 AK |
1414 | static const MemoryRegionOps error_mem_ops = { |
1415 | .read = error_mem_read, | |
1416 | .write = error_mem_write, | |
1417 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
1418 | }; |
1419 | ||
0e0df1e2 AK |
1420 | static const MemoryRegionOps rom_mem_ops = { |
1421 | .read = error_mem_read, | |
1422 | .write = unassigned_mem_write, | |
1423 | .endianness = DEVICE_NATIVE_ENDIAN, | |
33417e70 FB |
1424 | }; |
1425 | ||
a8170e5e | 1426 | static void notdirty_mem_write(void *opaque, hwaddr ram_addr, |
0e0df1e2 | 1427 | uint64_t val, unsigned size) |
9fa3e853 | 1428 | { |
3a7d929e | 1429 | int dirty_flags; |
f7c11b53 | 1430 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
3a7d929e | 1431 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
9fa3e853 | 1432 | #if !defined(CONFIG_USER_ONLY) |
0e0df1e2 | 1433 | tb_invalidate_phys_page_fast(ram_addr, size); |
f7c11b53 | 1434 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
9fa3e853 | 1435 | #endif |
3a7d929e | 1436 | } |
0e0df1e2 AK |
1437 | switch (size) { |
1438 | case 1: | |
1439 | stb_p(qemu_get_ram_ptr(ram_addr), val); | |
1440 | break; | |
1441 | case 2: | |
1442 | stw_p(qemu_get_ram_ptr(ram_addr), val); | |
1443 | break; | |
1444 | case 4: | |
1445 | stl_p(qemu_get_ram_ptr(ram_addr), val); | |
1446 | break; | |
1447 | default: | |
1448 | abort(); | |
3a7d929e | 1449 | } |
f23db169 | 1450 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
f7c11b53 | 1451 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
f23db169 FB |
1452 | /* we remove the notdirty callback only if the code has been |
1453 | flushed */ | |
1454 | if (dirty_flags == 0xff) | |
2e70f6ef | 1455 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
9fa3e853 FB |
1456 | } |
1457 | ||
0e0df1e2 AK |
1458 | static const MemoryRegionOps notdirty_mem_ops = { |
1459 | .read = error_mem_read, | |
1460 | .write = notdirty_mem_write, | |
1461 | .endianness = DEVICE_NATIVE_ENDIAN, | |
1ccde1cb FB |
1462 | }; |
1463 | ||
0f459d16 | 1464 | /* Generate a debug exception if a watchpoint has been hit. */ |
b4051334 | 1465 | static void check_watchpoint(int offset, int len_mask, int flags) |
0f459d16 | 1466 | { |
9349b4f9 | 1467 | CPUArchState *env = cpu_single_env; |
06d55cc1 | 1468 | target_ulong pc, cs_base; |
0f459d16 | 1469 | target_ulong vaddr; |
a1d1bb31 | 1470 | CPUWatchpoint *wp; |
06d55cc1 | 1471 | int cpu_flags; |
0f459d16 | 1472 | |
06d55cc1 AL |
1473 | if (env->watchpoint_hit) { |
1474 | /* We re-entered the check after replacing the TB. Now raise | |
1475 | * the debug interrupt so that is will trigger after the | |
1476 | * current instruction. */ | |
1477 | cpu_interrupt(env, CPU_INTERRUPT_DEBUG); | |
1478 | return; | |
1479 | } | |
2e70f6ef | 1480 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
72cf2d4f | 1481 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
b4051334 AL |
1482 | if ((vaddr == (wp->vaddr & len_mask) || |
1483 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { | |
6e140f28 AL |
1484 | wp->flags |= BP_WATCHPOINT_HIT; |
1485 | if (!env->watchpoint_hit) { | |
1486 | env->watchpoint_hit = wp; | |
5a316526 | 1487 | tb_check_watchpoint(env); |
6e140f28 AL |
1488 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { |
1489 | env->exception_index = EXCP_DEBUG; | |
488d6577 | 1490 | cpu_loop_exit(env); |
6e140f28 AL |
1491 | } else { |
1492 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); | |
1493 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); | |
488d6577 | 1494 | cpu_resume_from_signal(env, NULL); |
6e140f28 | 1495 | } |
06d55cc1 | 1496 | } |
6e140f28 AL |
1497 | } else { |
1498 | wp->flags &= ~BP_WATCHPOINT_HIT; | |
0f459d16 PB |
1499 | } |
1500 | } | |
1501 | } | |
1502 | ||
6658ffb8 PB |
1503 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
1504 | so these check for a hit then pass through to the normal out-of-line | |
1505 | phys routines. */ | |
a8170e5e | 1506 | static uint64_t watch_mem_read(void *opaque, hwaddr addr, |
1ec9b909 | 1507 | unsigned size) |
6658ffb8 | 1508 | { |
1ec9b909 AK |
1509 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_READ); |
1510 | switch (size) { | |
1511 | case 1: return ldub_phys(addr); | |
1512 | case 2: return lduw_phys(addr); | |
1513 | case 4: return ldl_phys(addr); | |
1514 | default: abort(); | |
1515 | } | |
6658ffb8 PB |
1516 | } |
1517 | ||
a8170e5e | 1518 | static void watch_mem_write(void *opaque, hwaddr addr, |
1ec9b909 | 1519 | uint64_t val, unsigned size) |
6658ffb8 | 1520 | { |
1ec9b909 AK |
1521 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~(size - 1), BP_MEM_WRITE); |
1522 | switch (size) { | |
67364150 MF |
1523 | case 1: |
1524 | stb_phys(addr, val); | |
1525 | break; | |
1526 | case 2: | |
1527 | stw_phys(addr, val); | |
1528 | break; | |
1529 | case 4: | |
1530 | stl_phys(addr, val); | |
1531 | break; | |
1ec9b909 AK |
1532 | default: abort(); |
1533 | } | |
6658ffb8 PB |
1534 | } |
1535 | ||
1ec9b909 AK |
1536 | static const MemoryRegionOps watch_mem_ops = { |
1537 | .read = watch_mem_read, | |
1538 | .write = watch_mem_write, | |
1539 | .endianness = DEVICE_NATIVE_ENDIAN, | |
6658ffb8 | 1540 | }; |
6658ffb8 | 1541 | |
a8170e5e | 1542 | static uint64_t subpage_read(void *opaque, hwaddr addr, |
70c68e44 | 1543 | unsigned len) |
db7b5426 | 1544 | { |
70c68e44 | 1545 | subpage_t *mmio = opaque; |
f6405247 | 1546 | unsigned int idx = SUBPAGE_IDX(addr); |
5312bd8b | 1547 | MemoryRegionSection *section; |
db7b5426 BS |
1548 | #if defined(DEBUG_SUBPAGE) |
1549 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__, | |
1550 | mmio, len, addr, idx); | |
1551 | #endif | |
db7b5426 | 1552 | |
5312bd8b AK |
1553 | section = &phys_sections[mmio->sub_section[idx]]; |
1554 | addr += mmio->base; | |
1555 | addr -= section->offset_within_address_space; | |
1556 | addr += section->offset_within_region; | |
37ec01d4 | 1557 | return io_mem_read(section->mr, addr, len); |
db7b5426 BS |
1558 | } |
1559 | ||
a8170e5e | 1560 | static void subpage_write(void *opaque, hwaddr addr, |
70c68e44 | 1561 | uint64_t value, unsigned len) |
db7b5426 | 1562 | { |
70c68e44 | 1563 | subpage_t *mmio = opaque; |
f6405247 | 1564 | unsigned int idx = SUBPAGE_IDX(addr); |
5312bd8b | 1565 | MemoryRegionSection *section; |
db7b5426 | 1566 | #if defined(DEBUG_SUBPAGE) |
70c68e44 AK |
1567 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx |
1568 | " idx %d value %"PRIx64"\n", | |
f6405247 | 1569 | __func__, mmio, len, addr, idx, value); |
db7b5426 | 1570 | #endif |
f6405247 | 1571 | |
5312bd8b AK |
1572 | section = &phys_sections[mmio->sub_section[idx]]; |
1573 | addr += mmio->base; | |
1574 | addr -= section->offset_within_address_space; | |
1575 | addr += section->offset_within_region; | |
37ec01d4 | 1576 | io_mem_write(section->mr, addr, value, len); |
db7b5426 BS |
1577 | } |
1578 | ||
70c68e44 AK |
1579 | static const MemoryRegionOps subpage_ops = { |
1580 | .read = subpage_read, | |
1581 | .write = subpage_write, | |
1582 | .endianness = DEVICE_NATIVE_ENDIAN, | |
db7b5426 BS |
1583 | }; |
1584 | ||
a8170e5e | 1585 | static uint64_t subpage_ram_read(void *opaque, hwaddr addr, |
de712f94 | 1586 | unsigned size) |
56384e8b AF |
1587 | { |
1588 | ram_addr_t raddr = addr; | |
1589 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
1590 | switch (size) { |
1591 | case 1: return ldub_p(ptr); | |
1592 | case 2: return lduw_p(ptr); | |
1593 | case 4: return ldl_p(ptr); | |
1594 | default: abort(); | |
1595 | } | |
56384e8b AF |
1596 | } |
1597 | ||
a8170e5e | 1598 | static void subpage_ram_write(void *opaque, hwaddr addr, |
de712f94 | 1599 | uint64_t value, unsigned size) |
56384e8b AF |
1600 | { |
1601 | ram_addr_t raddr = addr; | |
1602 | void *ptr = qemu_get_ram_ptr(raddr); | |
de712f94 AK |
1603 | switch (size) { |
1604 | case 1: return stb_p(ptr, value); | |
1605 | case 2: return stw_p(ptr, value); | |
1606 | case 4: return stl_p(ptr, value); | |
1607 | default: abort(); | |
1608 | } | |
56384e8b AF |
1609 | } |
1610 | ||
de712f94 AK |
1611 | static const MemoryRegionOps subpage_ram_ops = { |
1612 | .read = subpage_ram_read, | |
1613 | .write = subpage_ram_write, | |
1614 | .endianness = DEVICE_NATIVE_ENDIAN, | |
56384e8b AF |
1615 | }; |
1616 | ||
c227f099 | 1617 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
5312bd8b | 1618 | uint16_t section) |
db7b5426 BS |
1619 | { |
1620 | int idx, eidx; | |
1621 | ||
1622 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) | |
1623 | return -1; | |
1624 | idx = SUBPAGE_IDX(start); | |
1625 | eidx = SUBPAGE_IDX(end); | |
1626 | #if defined(DEBUG_SUBPAGE) | |
0bf9e31a | 1627 | printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, |
db7b5426 BS |
1628 | mmio, start, end, idx, eidx, memory); |
1629 | #endif | |
5312bd8b AK |
1630 | if (memory_region_is_ram(phys_sections[section].mr)) { |
1631 | MemoryRegionSection new_section = phys_sections[section]; | |
1632 | new_section.mr = &io_mem_subpage_ram; | |
1633 | section = phys_section_add(&new_section); | |
56384e8b | 1634 | } |
db7b5426 | 1635 | for (; idx <= eidx; idx++) { |
5312bd8b | 1636 | mmio->sub_section[idx] = section; |
db7b5426 BS |
1637 | } |
1638 | ||
1639 | return 0; | |
1640 | } | |
1641 | ||
a8170e5e | 1642 | static subpage_t *subpage_init(hwaddr base) |
db7b5426 | 1643 | { |
c227f099 | 1644 | subpage_t *mmio; |
db7b5426 | 1645 | |
7267c094 | 1646 | mmio = g_malloc0(sizeof(subpage_t)); |
1eec614b AL |
1647 | |
1648 | mmio->base = base; | |
70c68e44 AK |
1649 | memory_region_init_io(&mmio->iomem, &subpage_ops, mmio, |
1650 | "subpage", TARGET_PAGE_SIZE); | |
b3b00c78 | 1651 | mmio->iomem.subpage = true; |
db7b5426 | 1652 | #if defined(DEBUG_SUBPAGE) |
1eec614b AL |
1653 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
1654 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); | |
db7b5426 | 1655 | #endif |
0f0cb164 | 1656 | subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, phys_section_unassigned); |
db7b5426 BS |
1657 | |
1658 | return mmio; | |
1659 | } | |
1660 | ||
5312bd8b AK |
1661 | static uint16_t dummy_section(MemoryRegion *mr) |
1662 | { | |
1663 | MemoryRegionSection section = { | |
1664 | .mr = mr, | |
1665 | .offset_within_address_space = 0, | |
1666 | .offset_within_region = 0, | |
1667 | .size = UINT64_MAX, | |
1668 | }; | |
1669 | ||
1670 | return phys_section_add(§ion); | |
1671 | } | |
1672 | ||
a8170e5e | 1673 | MemoryRegion *iotlb_to_region(hwaddr index) |
aa102231 | 1674 | { |
37ec01d4 | 1675 | return phys_sections[index & ~TARGET_PAGE_MASK].mr; |
aa102231 AK |
1676 | } |
1677 | ||
e9179ce1 AK |
1678 | static void io_mem_init(void) |
1679 | { | |
0e0df1e2 | 1680 | memory_region_init_io(&io_mem_ram, &error_mem_ops, NULL, "ram", UINT64_MAX); |
0e0df1e2 AK |
1681 | memory_region_init_io(&io_mem_rom, &rom_mem_ops, NULL, "rom", UINT64_MAX); |
1682 | memory_region_init_io(&io_mem_unassigned, &unassigned_mem_ops, NULL, | |
1683 | "unassigned", UINT64_MAX); | |
1684 | memory_region_init_io(&io_mem_notdirty, ¬dirty_mem_ops, NULL, | |
1685 | "notdirty", UINT64_MAX); | |
de712f94 AK |
1686 | memory_region_init_io(&io_mem_subpage_ram, &subpage_ram_ops, NULL, |
1687 | "subpage-ram", UINT64_MAX); | |
1ec9b909 AK |
1688 | memory_region_init_io(&io_mem_watch, &watch_mem_ops, NULL, |
1689 | "watch", UINT64_MAX); | |
e9179ce1 AK |
1690 | } |
1691 | ||
ac1970fb AK |
1692 | static void mem_begin(MemoryListener *listener) |
1693 | { | |
1694 | AddressSpaceDispatch *d = container_of(listener, AddressSpaceDispatch, listener); | |
1695 | ||
1696 | destroy_all_mappings(d); | |
1697 | d->phys_map.ptr = PHYS_MAP_NODE_NIL; | |
1698 | } | |
1699 | ||
50c1e149 AK |
1700 | static void core_begin(MemoryListener *listener) |
1701 | { | |
5312bd8b AK |
1702 | phys_sections_clear(); |
1703 | phys_section_unassigned = dummy_section(&io_mem_unassigned); | |
aa102231 AK |
1704 | phys_section_notdirty = dummy_section(&io_mem_notdirty); |
1705 | phys_section_rom = dummy_section(&io_mem_rom); | |
1706 | phys_section_watch = dummy_section(&io_mem_watch); | |
50c1e149 AK |
1707 | } |
1708 | ||
1d71148e | 1709 | static void tcg_commit(MemoryListener *listener) |
50c1e149 | 1710 | { |
9349b4f9 | 1711 | CPUArchState *env; |
117712c3 AK |
1712 | |
1713 | /* since each CPU stores ram addresses in its TLB cache, we must | |
1714 | reset the modified entries */ | |
1715 | /* XXX: slow ! */ | |
1716 | for(env = first_cpu; env != NULL; env = env->next_cpu) { | |
1717 | tlb_flush(env, 1); | |
1718 | } | |
50c1e149 AK |
1719 | } |
1720 | ||
93632747 AK |
1721 | static void core_log_global_start(MemoryListener *listener) |
1722 | { | |
1723 | cpu_physical_memory_set_dirty_tracking(1); | |
1724 | } | |
1725 | ||
1726 | static void core_log_global_stop(MemoryListener *listener) | |
1727 | { | |
1728 | cpu_physical_memory_set_dirty_tracking(0); | |
1729 | } | |
1730 | ||
4855d41a AK |
1731 | static void io_region_add(MemoryListener *listener, |
1732 | MemoryRegionSection *section) | |
1733 | { | |
a2d33521 AK |
1734 | MemoryRegionIORange *mrio = g_new(MemoryRegionIORange, 1); |
1735 | ||
1736 | mrio->mr = section->mr; | |
1737 | mrio->offset = section->offset_within_region; | |
1738 | iorange_init(&mrio->iorange, &memory_region_iorange_ops, | |
4855d41a | 1739 | section->offset_within_address_space, section->size); |
a2d33521 | 1740 | ioport_register(&mrio->iorange); |
4855d41a AK |
1741 | } |
1742 | ||
1743 | static void io_region_del(MemoryListener *listener, | |
1744 | MemoryRegionSection *section) | |
1745 | { | |
1746 | isa_unassign_ioport(section->offset_within_address_space, section->size); | |
1747 | } | |
1748 | ||
93632747 | 1749 | static MemoryListener core_memory_listener = { |
50c1e149 | 1750 | .begin = core_begin, |
93632747 AK |
1751 | .log_global_start = core_log_global_start, |
1752 | .log_global_stop = core_log_global_stop, | |
ac1970fb | 1753 | .priority = 1, |
93632747 AK |
1754 | }; |
1755 | ||
4855d41a AK |
1756 | static MemoryListener io_memory_listener = { |
1757 | .region_add = io_region_add, | |
1758 | .region_del = io_region_del, | |
4855d41a AK |
1759 | .priority = 0, |
1760 | }; | |
1761 | ||
1d71148e AK |
1762 | static MemoryListener tcg_memory_listener = { |
1763 | .commit = tcg_commit, | |
1764 | }; | |
1765 | ||
ac1970fb AK |
1766 | void address_space_init_dispatch(AddressSpace *as) |
1767 | { | |
1768 | AddressSpaceDispatch *d = g_new(AddressSpaceDispatch, 1); | |
1769 | ||
1770 | d->phys_map = (PhysPageEntry) { .ptr = PHYS_MAP_NODE_NIL, .is_leaf = 0 }; | |
1771 | d->listener = (MemoryListener) { | |
1772 | .begin = mem_begin, | |
1773 | .region_add = mem_add, | |
1774 | .region_nop = mem_add, | |
1775 | .priority = 0, | |
1776 | }; | |
1777 | as->dispatch = d; | |
1778 | memory_listener_register(&d->listener, as); | |
1779 | } | |
1780 | ||
83f3c251 AK |
1781 | void address_space_destroy_dispatch(AddressSpace *as) |
1782 | { | |
1783 | AddressSpaceDispatch *d = as->dispatch; | |
1784 | ||
1785 | memory_listener_unregister(&d->listener); | |
1786 | destroy_l2_mapping(&d->phys_map, P_L2_LEVELS - 1); | |
1787 | g_free(d); | |
1788 | as->dispatch = NULL; | |
1789 | } | |
1790 | ||
62152b8a AK |
1791 | static void memory_map_init(void) |
1792 | { | |
7267c094 | 1793 | system_memory = g_malloc(sizeof(*system_memory)); |
8417cebf | 1794 | memory_region_init(system_memory, "system", INT64_MAX); |
2673a5da AK |
1795 | address_space_init(&address_space_memory, system_memory); |
1796 | address_space_memory.name = "memory"; | |
309cb471 | 1797 | |
7267c094 | 1798 | system_io = g_malloc(sizeof(*system_io)); |
309cb471 | 1799 | memory_region_init(system_io, "io", 65536); |
2673a5da AK |
1800 | address_space_init(&address_space_io, system_io); |
1801 | address_space_io.name = "I/O"; | |
93632747 | 1802 | |
f6790af6 AK |
1803 | memory_listener_register(&core_memory_listener, &address_space_memory); |
1804 | memory_listener_register(&io_memory_listener, &address_space_io); | |
1805 | memory_listener_register(&tcg_memory_listener, &address_space_memory); | |
9e11908f PM |
1806 | |
1807 | dma_context_init(&dma_context_memory, &address_space_memory, | |
1808 | NULL, NULL, NULL); | |
62152b8a AK |
1809 | } |
1810 | ||
1811 | MemoryRegion *get_system_memory(void) | |
1812 | { | |
1813 | return system_memory; | |
1814 | } | |
1815 | ||
309cb471 AK |
1816 | MemoryRegion *get_system_io(void) |
1817 | { | |
1818 | return system_io; | |
1819 | } | |
1820 | ||
e2eef170 PB |
1821 | #endif /* !defined(CONFIG_USER_ONLY) */ |
1822 | ||
13eb76e0 FB |
1823 | /* physical memory access (slow version, mainly for debug) */ |
1824 | #if defined(CONFIG_USER_ONLY) | |
9349b4f9 | 1825 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
a68fe89c | 1826 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
1827 | { |
1828 | int l, flags; | |
1829 | target_ulong page; | |
53a5960a | 1830 | void * p; |
13eb76e0 FB |
1831 | |
1832 | while (len > 0) { | |
1833 | page = addr & TARGET_PAGE_MASK; | |
1834 | l = (page + TARGET_PAGE_SIZE) - addr; | |
1835 | if (l > len) | |
1836 | l = len; | |
1837 | flags = page_get_flags(page); | |
1838 | if (!(flags & PAGE_VALID)) | |
a68fe89c | 1839 | return -1; |
13eb76e0 FB |
1840 | if (is_write) { |
1841 | if (!(flags & PAGE_WRITE)) | |
a68fe89c | 1842 | return -1; |
579a97f7 | 1843 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1844 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
a68fe89c | 1845 | return -1; |
72fb7daa AJ |
1846 | memcpy(p, buf, l); |
1847 | unlock_user(p, addr, l); | |
13eb76e0 FB |
1848 | } else { |
1849 | if (!(flags & PAGE_READ)) | |
a68fe89c | 1850 | return -1; |
579a97f7 | 1851 | /* XXX: this code should not depend on lock_user */ |
72fb7daa | 1852 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
a68fe89c | 1853 | return -1; |
72fb7daa | 1854 | memcpy(buf, p, l); |
5b257578 | 1855 | unlock_user(p, addr, 0); |
13eb76e0 FB |
1856 | } |
1857 | len -= l; | |
1858 | buf += l; | |
1859 | addr += l; | |
1860 | } | |
a68fe89c | 1861 | return 0; |
13eb76e0 | 1862 | } |
8df1cd07 | 1863 | |
13eb76e0 | 1864 | #else |
51d7a9eb | 1865 | |
a8170e5e AK |
1866 | static void invalidate_and_set_dirty(hwaddr addr, |
1867 | hwaddr length) | |
51d7a9eb AP |
1868 | { |
1869 | if (!cpu_physical_memory_is_dirty(addr)) { | |
1870 | /* invalidate code */ | |
1871 | tb_invalidate_phys_page_range(addr, addr + length, 0); | |
1872 | /* set dirty bit */ | |
1873 | cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG)); | |
1874 | } | |
e226939d | 1875 | xen_modified_memory(addr, length); |
51d7a9eb AP |
1876 | } |
1877 | ||
a8170e5e | 1878 | void address_space_rw(AddressSpace *as, hwaddr addr, uint8_t *buf, |
ac1970fb | 1879 | int len, bool is_write) |
13eb76e0 | 1880 | { |
ac1970fb | 1881 | AddressSpaceDispatch *d = as->dispatch; |
37ec01d4 | 1882 | int l; |
13eb76e0 FB |
1883 | uint8_t *ptr; |
1884 | uint32_t val; | |
a8170e5e | 1885 | hwaddr page; |
f3705d53 | 1886 | MemoryRegionSection *section; |
3b46e624 | 1887 | |
13eb76e0 FB |
1888 | while (len > 0) { |
1889 | page = addr & TARGET_PAGE_MASK; | |
1890 | l = (page + TARGET_PAGE_SIZE) - addr; | |
1891 | if (l > len) | |
1892 | l = len; | |
ac1970fb | 1893 | section = phys_page_find(d, page >> TARGET_PAGE_BITS); |
3b46e624 | 1894 | |
13eb76e0 | 1895 | if (is_write) { |
f3705d53 | 1896 | if (!memory_region_is_ram(section->mr)) { |
a8170e5e | 1897 | hwaddr addr1; |
cc5bea60 | 1898 | addr1 = memory_region_section_addr(section, addr); |
6a00d601 FB |
1899 | /* XXX: could force cpu_single_env to NULL to avoid |
1900 | potential bugs */ | |
6c2934db | 1901 | if (l >= 4 && ((addr1 & 3) == 0)) { |
1c213d19 | 1902 | /* 32 bit write access */ |
c27004ec | 1903 | val = ldl_p(buf); |
37ec01d4 | 1904 | io_mem_write(section->mr, addr1, val, 4); |
13eb76e0 | 1905 | l = 4; |
6c2934db | 1906 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
1c213d19 | 1907 | /* 16 bit write access */ |
c27004ec | 1908 | val = lduw_p(buf); |
37ec01d4 | 1909 | io_mem_write(section->mr, addr1, val, 2); |
13eb76e0 FB |
1910 | l = 2; |
1911 | } else { | |
1c213d19 | 1912 | /* 8 bit write access */ |
c27004ec | 1913 | val = ldub_p(buf); |
37ec01d4 | 1914 | io_mem_write(section->mr, addr1, val, 1); |
13eb76e0 FB |
1915 | l = 1; |
1916 | } | |
f3705d53 | 1917 | } else if (!section->readonly) { |
8ca5692d | 1918 | ram_addr_t addr1; |
f3705d53 | 1919 | addr1 = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 1920 | + memory_region_section_addr(section, addr); |
13eb76e0 | 1921 | /* RAM case */ |
5579c7f3 | 1922 | ptr = qemu_get_ram_ptr(addr1); |
13eb76e0 | 1923 | memcpy(ptr, buf, l); |
51d7a9eb | 1924 | invalidate_and_set_dirty(addr1, l); |
050a0ddf | 1925 | qemu_put_ram_ptr(ptr); |
13eb76e0 FB |
1926 | } |
1927 | } else { | |
cc5bea60 BS |
1928 | if (!(memory_region_is_ram(section->mr) || |
1929 | memory_region_is_romd(section->mr))) { | |
a8170e5e | 1930 | hwaddr addr1; |
13eb76e0 | 1931 | /* I/O case */ |
cc5bea60 | 1932 | addr1 = memory_region_section_addr(section, addr); |
6c2934db | 1933 | if (l >= 4 && ((addr1 & 3) == 0)) { |
13eb76e0 | 1934 | /* 32 bit read access */ |
37ec01d4 | 1935 | val = io_mem_read(section->mr, addr1, 4); |
c27004ec | 1936 | stl_p(buf, val); |
13eb76e0 | 1937 | l = 4; |
6c2934db | 1938 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
13eb76e0 | 1939 | /* 16 bit read access */ |
37ec01d4 | 1940 | val = io_mem_read(section->mr, addr1, 2); |
c27004ec | 1941 | stw_p(buf, val); |
13eb76e0 FB |
1942 | l = 2; |
1943 | } else { | |
1c213d19 | 1944 | /* 8 bit read access */ |
37ec01d4 | 1945 | val = io_mem_read(section->mr, addr1, 1); |
c27004ec | 1946 | stb_p(buf, val); |
13eb76e0 FB |
1947 | l = 1; |
1948 | } | |
1949 | } else { | |
1950 | /* RAM case */ | |
0a1b357f | 1951 | ptr = qemu_get_ram_ptr(section->mr->ram_addr |
cc5bea60 BS |
1952 | + memory_region_section_addr(section, |
1953 | addr)); | |
f3705d53 | 1954 | memcpy(buf, ptr, l); |
050a0ddf | 1955 | qemu_put_ram_ptr(ptr); |
13eb76e0 FB |
1956 | } |
1957 | } | |
1958 | len -= l; | |
1959 | buf += l; | |
1960 | addr += l; | |
1961 | } | |
1962 | } | |
8df1cd07 | 1963 | |
a8170e5e | 1964 | void address_space_write(AddressSpace *as, hwaddr addr, |
ac1970fb AK |
1965 | const uint8_t *buf, int len) |
1966 | { | |
1967 | address_space_rw(as, addr, (uint8_t *)buf, len, true); | |
1968 | } | |
1969 | ||
1970 | /** | |
1971 | * address_space_read: read from an address space. | |
1972 | * | |
1973 | * @as: #AddressSpace to be accessed | |
1974 | * @addr: address within that address space | |
1975 | * @buf: buffer with the data transferred | |
1976 | */ | |
a8170e5e | 1977 | void address_space_read(AddressSpace *as, hwaddr addr, uint8_t *buf, int len) |
ac1970fb AK |
1978 | { |
1979 | address_space_rw(as, addr, buf, len, false); | |
1980 | } | |
1981 | ||
1982 | ||
a8170e5e | 1983 | void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, |
ac1970fb AK |
1984 | int len, int is_write) |
1985 | { | |
1986 | return address_space_rw(&address_space_memory, addr, buf, len, is_write); | |
1987 | } | |
1988 | ||
d0ecd2aa | 1989 | /* used for ROM loading : can write in RAM and ROM */ |
a8170e5e | 1990 | void cpu_physical_memory_write_rom(hwaddr addr, |
d0ecd2aa FB |
1991 | const uint8_t *buf, int len) |
1992 | { | |
ac1970fb | 1993 | AddressSpaceDispatch *d = address_space_memory.dispatch; |
d0ecd2aa FB |
1994 | int l; |
1995 | uint8_t *ptr; | |
a8170e5e | 1996 | hwaddr page; |
f3705d53 | 1997 | MemoryRegionSection *section; |
3b46e624 | 1998 | |
d0ecd2aa FB |
1999 | while (len > 0) { |
2000 | page = addr & TARGET_PAGE_MASK; | |
2001 | l = (page + TARGET_PAGE_SIZE) - addr; | |
2002 | if (l > len) | |
2003 | l = len; | |
ac1970fb | 2004 | section = phys_page_find(d, page >> TARGET_PAGE_BITS); |
3b46e624 | 2005 | |
cc5bea60 BS |
2006 | if (!(memory_region_is_ram(section->mr) || |
2007 | memory_region_is_romd(section->mr))) { | |
d0ecd2aa FB |
2008 | /* do nothing */ |
2009 | } else { | |
2010 | unsigned long addr1; | |
f3705d53 | 2011 | addr1 = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 2012 | + memory_region_section_addr(section, addr); |
d0ecd2aa | 2013 | /* ROM/RAM case */ |
5579c7f3 | 2014 | ptr = qemu_get_ram_ptr(addr1); |
d0ecd2aa | 2015 | memcpy(ptr, buf, l); |
51d7a9eb | 2016 | invalidate_and_set_dirty(addr1, l); |
050a0ddf | 2017 | qemu_put_ram_ptr(ptr); |
d0ecd2aa FB |
2018 | } |
2019 | len -= l; | |
2020 | buf += l; | |
2021 | addr += l; | |
2022 | } | |
2023 | } | |
2024 | ||
6d16c2f8 AL |
2025 | typedef struct { |
2026 | void *buffer; | |
a8170e5e AK |
2027 | hwaddr addr; |
2028 | hwaddr len; | |
6d16c2f8 AL |
2029 | } BounceBuffer; |
2030 | ||
2031 | static BounceBuffer bounce; | |
2032 | ||
ba223c29 AL |
2033 | typedef struct MapClient { |
2034 | void *opaque; | |
2035 | void (*callback)(void *opaque); | |
72cf2d4f | 2036 | QLIST_ENTRY(MapClient) link; |
ba223c29 AL |
2037 | } MapClient; |
2038 | ||
72cf2d4f BS |
2039 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
2040 | = QLIST_HEAD_INITIALIZER(map_client_list); | |
ba223c29 AL |
2041 | |
2042 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) | |
2043 | { | |
7267c094 | 2044 | MapClient *client = g_malloc(sizeof(*client)); |
ba223c29 AL |
2045 | |
2046 | client->opaque = opaque; | |
2047 | client->callback = callback; | |
72cf2d4f | 2048 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
ba223c29 AL |
2049 | return client; |
2050 | } | |
2051 | ||
8b9c99d9 | 2052 | static void cpu_unregister_map_client(void *_client) |
ba223c29 AL |
2053 | { |
2054 | MapClient *client = (MapClient *)_client; | |
2055 | ||
72cf2d4f | 2056 | QLIST_REMOVE(client, link); |
7267c094 | 2057 | g_free(client); |
ba223c29 AL |
2058 | } |
2059 | ||
2060 | static void cpu_notify_map_clients(void) | |
2061 | { | |
2062 | MapClient *client; | |
2063 | ||
72cf2d4f BS |
2064 | while (!QLIST_EMPTY(&map_client_list)) { |
2065 | client = QLIST_FIRST(&map_client_list); | |
ba223c29 | 2066 | client->callback(client->opaque); |
34d5e948 | 2067 | cpu_unregister_map_client(client); |
ba223c29 AL |
2068 | } |
2069 | } | |
2070 | ||
6d16c2f8 AL |
2071 | /* Map a physical memory region into a host virtual address. |
2072 | * May map a subset of the requested range, given by and returned in *plen. | |
2073 | * May return NULL if resources needed to perform the mapping are exhausted. | |
2074 | * Use only for reads OR writes - not for read-modify-write operations. | |
ba223c29 AL |
2075 | * Use cpu_register_map_client() to know when retrying the map operation is |
2076 | * likely to succeed. | |
6d16c2f8 | 2077 | */ |
ac1970fb | 2078 | void *address_space_map(AddressSpace *as, |
a8170e5e AK |
2079 | hwaddr addr, |
2080 | hwaddr *plen, | |
ac1970fb | 2081 | bool is_write) |
6d16c2f8 | 2082 | { |
ac1970fb | 2083 | AddressSpaceDispatch *d = as->dispatch; |
a8170e5e AK |
2084 | hwaddr len = *plen; |
2085 | hwaddr todo = 0; | |
6d16c2f8 | 2086 | int l; |
a8170e5e | 2087 | hwaddr page; |
f3705d53 | 2088 | MemoryRegionSection *section; |
f15fbc4b | 2089 | ram_addr_t raddr = RAM_ADDR_MAX; |
8ab934f9 SS |
2090 | ram_addr_t rlen; |
2091 | void *ret; | |
6d16c2f8 AL |
2092 | |
2093 | while (len > 0) { | |
2094 | page = addr & TARGET_PAGE_MASK; | |
2095 | l = (page + TARGET_PAGE_SIZE) - addr; | |
2096 | if (l > len) | |
2097 | l = len; | |
ac1970fb | 2098 | section = phys_page_find(d, page >> TARGET_PAGE_BITS); |
6d16c2f8 | 2099 | |
f3705d53 | 2100 | if (!(memory_region_is_ram(section->mr) && !section->readonly)) { |
38bee5dc | 2101 | if (todo || bounce.buffer) { |
6d16c2f8 AL |
2102 | break; |
2103 | } | |
2104 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); | |
2105 | bounce.addr = addr; | |
2106 | bounce.len = l; | |
2107 | if (!is_write) { | |
ac1970fb | 2108 | address_space_read(as, addr, bounce.buffer, l); |
6d16c2f8 | 2109 | } |
38bee5dc SS |
2110 | |
2111 | *plen = l; | |
2112 | return bounce.buffer; | |
6d16c2f8 | 2113 | } |
8ab934f9 | 2114 | if (!todo) { |
f3705d53 | 2115 | raddr = memory_region_get_ram_addr(section->mr) |
cc5bea60 | 2116 | + memory_region_section_addr(section, addr); |
8ab934f9 | 2117 | } |
6d16c2f8 AL |
2118 | |
2119 | len -= l; | |
2120 | addr += l; | |
38bee5dc | 2121 | todo += l; |
6d16c2f8 | 2122 | } |
8ab934f9 SS |
2123 | rlen = todo; |
2124 | ret = qemu_ram_ptr_length(raddr, &rlen); | |
2125 | *plen = rlen; | |
2126 | return ret; | |
6d16c2f8 AL |
2127 | } |
2128 | ||
ac1970fb | 2129 | /* Unmaps a memory region previously mapped by address_space_map(). |
6d16c2f8 AL |
2130 | * Will also mark the memory as dirty if is_write == 1. access_len gives |
2131 | * the amount of memory that was actually read or written by the caller. | |
2132 | */ | |
a8170e5e AK |
2133 | void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len, |
2134 | int is_write, hwaddr access_len) | |
6d16c2f8 AL |
2135 | { |
2136 | if (buffer != bounce.buffer) { | |
2137 | if (is_write) { | |
e890261f | 2138 | ram_addr_t addr1 = qemu_ram_addr_from_host_nofail(buffer); |
6d16c2f8 AL |
2139 | while (access_len) { |
2140 | unsigned l; | |
2141 | l = TARGET_PAGE_SIZE; | |
2142 | if (l > access_len) | |
2143 | l = access_len; | |
51d7a9eb | 2144 | invalidate_and_set_dirty(addr1, l); |
6d16c2f8 AL |
2145 | addr1 += l; |
2146 | access_len -= l; | |
2147 | } | |
2148 | } | |
868bb33f | 2149 | if (xen_enabled()) { |
e41d7c69 | 2150 | xen_invalidate_map_cache_entry(buffer); |
050a0ddf | 2151 | } |
6d16c2f8 AL |
2152 | return; |
2153 | } | |
2154 | if (is_write) { | |
ac1970fb | 2155 | address_space_write(as, bounce.addr, bounce.buffer, access_len); |
6d16c2f8 | 2156 | } |
f8a83245 | 2157 | qemu_vfree(bounce.buffer); |
6d16c2f8 | 2158 | bounce.buffer = NULL; |
ba223c29 | 2159 | cpu_notify_map_clients(); |
6d16c2f8 | 2160 | } |
d0ecd2aa | 2161 | |
a8170e5e AK |
2162 | void *cpu_physical_memory_map(hwaddr addr, |
2163 | hwaddr *plen, | |
ac1970fb AK |
2164 | int is_write) |
2165 | { | |
2166 | return address_space_map(&address_space_memory, addr, plen, is_write); | |
2167 | } | |
2168 | ||
a8170e5e AK |
2169 | void cpu_physical_memory_unmap(void *buffer, hwaddr len, |
2170 | int is_write, hwaddr access_len) | |
ac1970fb AK |
2171 | { |
2172 | return address_space_unmap(&address_space_memory, buffer, len, is_write, access_len); | |
2173 | } | |
2174 | ||
8df1cd07 | 2175 | /* warning: addr must be aligned */ |
a8170e5e | 2176 | static inline uint32_t ldl_phys_internal(hwaddr addr, |
1e78bcc1 | 2177 | enum device_endian endian) |
8df1cd07 | 2178 | { |
8df1cd07 FB |
2179 | uint8_t *ptr; |
2180 | uint32_t val; | |
f3705d53 | 2181 | MemoryRegionSection *section; |
8df1cd07 | 2182 | |
ac1970fb | 2183 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 2184 | |
cc5bea60 BS |
2185 | if (!(memory_region_is_ram(section->mr) || |
2186 | memory_region_is_romd(section->mr))) { | |
8df1cd07 | 2187 | /* I/O case */ |
cc5bea60 | 2188 | addr = memory_region_section_addr(section, addr); |
37ec01d4 | 2189 | val = io_mem_read(section->mr, addr, 4); |
1e78bcc1 AG |
2190 | #if defined(TARGET_WORDS_BIGENDIAN) |
2191 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2192 | val = bswap32(val); | |
2193 | } | |
2194 | #else | |
2195 | if (endian == DEVICE_BIG_ENDIAN) { | |
2196 | val = bswap32(val); | |
2197 | } | |
2198 | #endif | |
8df1cd07 FB |
2199 | } else { |
2200 | /* RAM case */ | |
f3705d53 | 2201 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 2202 | & TARGET_PAGE_MASK) |
cc5bea60 | 2203 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
2204 | switch (endian) { |
2205 | case DEVICE_LITTLE_ENDIAN: | |
2206 | val = ldl_le_p(ptr); | |
2207 | break; | |
2208 | case DEVICE_BIG_ENDIAN: | |
2209 | val = ldl_be_p(ptr); | |
2210 | break; | |
2211 | default: | |
2212 | val = ldl_p(ptr); | |
2213 | break; | |
2214 | } | |
8df1cd07 FB |
2215 | } |
2216 | return val; | |
2217 | } | |
2218 | ||
a8170e5e | 2219 | uint32_t ldl_phys(hwaddr addr) |
1e78bcc1 AG |
2220 | { |
2221 | return ldl_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2222 | } | |
2223 | ||
a8170e5e | 2224 | uint32_t ldl_le_phys(hwaddr addr) |
1e78bcc1 AG |
2225 | { |
2226 | return ldl_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2227 | } | |
2228 | ||
a8170e5e | 2229 | uint32_t ldl_be_phys(hwaddr addr) |
1e78bcc1 AG |
2230 | { |
2231 | return ldl_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2232 | } | |
2233 | ||
84b7b8e7 | 2234 | /* warning: addr must be aligned */ |
a8170e5e | 2235 | static inline uint64_t ldq_phys_internal(hwaddr addr, |
1e78bcc1 | 2236 | enum device_endian endian) |
84b7b8e7 | 2237 | { |
84b7b8e7 FB |
2238 | uint8_t *ptr; |
2239 | uint64_t val; | |
f3705d53 | 2240 | MemoryRegionSection *section; |
84b7b8e7 | 2241 | |
ac1970fb | 2242 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 2243 | |
cc5bea60 BS |
2244 | if (!(memory_region_is_ram(section->mr) || |
2245 | memory_region_is_romd(section->mr))) { | |
84b7b8e7 | 2246 | /* I/O case */ |
cc5bea60 | 2247 | addr = memory_region_section_addr(section, addr); |
1e78bcc1 AG |
2248 | |
2249 | /* XXX This is broken when device endian != cpu endian. | |
2250 | Fix and add "endian" variable check */ | |
84b7b8e7 | 2251 | #ifdef TARGET_WORDS_BIGENDIAN |
37ec01d4 AK |
2252 | val = io_mem_read(section->mr, addr, 4) << 32; |
2253 | val |= io_mem_read(section->mr, addr + 4, 4); | |
84b7b8e7 | 2254 | #else |
37ec01d4 AK |
2255 | val = io_mem_read(section->mr, addr, 4); |
2256 | val |= io_mem_read(section->mr, addr + 4, 4) << 32; | |
84b7b8e7 FB |
2257 | #endif |
2258 | } else { | |
2259 | /* RAM case */ | |
f3705d53 | 2260 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 2261 | & TARGET_PAGE_MASK) |
cc5bea60 | 2262 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
2263 | switch (endian) { |
2264 | case DEVICE_LITTLE_ENDIAN: | |
2265 | val = ldq_le_p(ptr); | |
2266 | break; | |
2267 | case DEVICE_BIG_ENDIAN: | |
2268 | val = ldq_be_p(ptr); | |
2269 | break; | |
2270 | default: | |
2271 | val = ldq_p(ptr); | |
2272 | break; | |
2273 | } | |
84b7b8e7 FB |
2274 | } |
2275 | return val; | |
2276 | } | |
2277 | ||
a8170e5e | 2278 | uint64_t ldq_phys(hwaddr addr) |
1e78bcc1 AG |
2279 | { |
2280 | return ldq_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2281 | } | |
2282 | ||
a8170e5e | 2283 | uint64_t ldq_le_phys(hwaddr addr) |
1e78bcc1 AG |
2284 | { |
2285 | return ldq_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2286 | } | |
2287 | ||
a8170e5e | 2288 | uint64_t ldq_be_phys(hwaddr addr) |
1e78bcc1 AG |
2289 | { |
2290 | return ldq_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2291 | } | |
2292 | ||
aab33094 | 2293 | /* XXX: optimize */ |
a8170e5e | 2294 | uint32_t ldub_phys(hwaddr addr) |
aab33094 FB |
2295 | { |
2296 | uint8_t val; | |
2297 | cpu_physical_memory_read(addr, &val, 1); | |
2298 | return val; | |
2299 | } | |
2300 | ||
733f0b02 | 2301 | /* warning: addr must be aligned */ |
a8170e5e | 2302 | static inline uint32_t lduw_phys_internal(hwaddr addr, |
1e78bcc1 | 2303 | enum device_endian endian) |
aab33094 | 2304 | { |
733f0b02 MT |
2305 | uint8_t *ptr; |
2306 | uint64_t val; | |
f3705d53 | 2307 | MemoryRegionSection *section; |
733f0b02 | 2308 | |
ac1970fb | 2309 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
733f0b02 | 2310 | |
cc5bea60 BS |
2311 | if (!(memory_region_is_ram(section->mr) || |
2312 | memory_region_is_romd(section->mr))) { | |
733f0b02 | 2313 | /* I/O case */ |
cc5bea60 | 2314 | addr = memory_region_section_addr(section, addr); |
37ec01d4 | 2315 | val = io_mem_read(section->mr, addr, 2); |
1e78bcc1 AG |
2316 | #if defined(TARGET_WORDS_BIGENDIAN) |
2317 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2318 | val = bswap16(val); | |
2319 | } | |
2320 | #else | |
2321 | if (endian == DEVICE_BIG_ENDIAN) { | |
2322 | val = bswap16(val); | |
2323 | } | |
2324 | #endif | |
733f0b02 MT |
2325 | } else { |
2326 | /* RAM case */ | |
f3705d53 | 2327 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 2328 | & TARGET_PAGE_MASK) |
cc5bea60 | 2329 | + memory_region_section_addr(section, addr)); |
1e78bcc1 AG |
2330 | switch (endian) { |
2331 | case DEVICE_LITTLE_ENDIAN: | |
2332 | val = lduw_le_p(ptr); | |
2333 | break; | |
2334 | case DEVICE_BIG_ENDIAN: | |
2335 | val = lduw_be_p(ptr); | |
2336 | break; | |
2337 | default: | |
2338 | val = lduw_p(ptr); | |
2339 | break; | |
2340 | } | |
733f0b02 MT |
2341 | } |
2342 | return val; | |
aab33094 FB |
2343 | } |
2344 | ||
a8170e5e | 2345 | uint32_t lduw_phys(hwaddr addr) |
1e78bcc1 AG |
2346 | { |
2347 | return lduw_phys_internal(addr, DEVICE_NATIVE_ENDIAN); | |
2348 | } | |
2349 | ||
a8170e5e | 2350 | uint32_t lduw_le_phys(hwaddr addr) |
1e78bcc1 AG |
2351 | { |
2352 | return lduw_phys_internal(addr, DEVICE_LITTLE_ENDIAN); | |
2353 | } | |
2354 | ||
a8170e5e | 2355 | uint32_t lduw_be_phys(hwaddr addr) |
1e78bcc1 AG |
2356 | { |
2357 | return lduw_phys_internal(addr, DEVICE_BIG_ENDIAN); | |
2358 | } | |
2359 | ||
8df1cd07 FB |
2360 | /* warning: addr must be aligned. The ram page is not masked as dirty |
2361 | and the code inside is not invalidated. It is useful if the dirty | |
2362 | bits are used to track modified PTEs */ | |
a8170e5e | 2363 | void stl_phys_notdirty(hwaddr addr, uint32_t val) |
8df1cd07 | 2364 | { |
8df1cd07 | 2365 | uint8_t *ptr; |
f3705d53 | 2366 | MemoryRegionSection *section; |
8df1cd07 | 2367 | |
ac1970fb | 2368 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 2369 | |
f3705d53 | 2370 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 2371 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 2372 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 2373 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 2374 | } |
37ec01d4 | 2375 | io_mem_write(section->mr, addr, val, 4); |
8df1cd07 | 2376 | } else { |
f3705d53 | 2377 | unsigned long addr1 = (memory_region_get_ram_addr(section->mr) |
06ef3525 | 2378 | & TARGET_PAGE_MASK) |
cc5bea60 | 2379 | + memory_region_section_addr(section, addr); |
5579c7f3 | 2380 | ptr = qemu_get_ram_ptr(addr1); |
8df1cd07 | 2381 | stl_p(ptr, val); |
74576198 AL |
2382 | |
2383 | if (unlikely(in_migration)) { | |
2384 | if (!cpu_physical_memory_is_dirty(addr1)) { | |
2385 | /* invalidate code */ | |
2386 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); | |
2387 | /* set dirty bit */ | |
f7c11b53 YT |
2388 | cpu_physical_memory_set_dirty_flags( |
2389 | addr1, (0xff & ~CODE_DIRTY_FLAG)); | |
74576198 AL |
2390 | } |
2391 | } | |
8df1cd07 FB |
2392 | } |
2393 | } | |
2394 | ||
a8170e5e | 2395 | void stq_phys_notdirty(hwaddr addr, uint64_t val) |
bc98a7ef | 2396 | { |
bc98a7ef | 2397 | uint8_t *ptr; |
f3705d53 | 2398 | MemoryRegionSection *section; |
bc98a7ef | 2399 | |
ac1970fb | 2400 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 2401 | |
f3705d53 | 2402 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 2403 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 2404 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 2405 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 2406 | } |
bc98a7ef | 2407 | #ifdef TARGET_WORDS_BIGENDIAN |
37ec01d4 AK |
2408 | io_mem_write(section->mr, addr, val >> 32, 4); |
2409 | io_mem_write(section->mr, addr + 4, (uint32_t)val, 4); | |
bc98a7ef | 2410 | #else |
37ec01d4 AK |
2411 | io_mem_write(section->mr, addr, (uint32_t)val, 4); |
2412 | io_mem_write(section->mr, addr + 4, val >> 32, 4); | |
bc98a7ef JM |
2413 | #endif |
2414 | } else { | |
f3705d53 | 2415 | ptr = qemu_get_ram_ptr((memory_region_get_ram_addr(section->mr) |
06ef3525 | 2416 | & TARGET_PAGE_MASK) |
cc5bea60 | 2417 | + memory_region_section_addr(section, addr)); |
bc98a7ef JM |
2418 | stq_p(ptr, val); |
2419 | } | |
2420 | } | |
2421 | ||
8df1cd07 | 2422 | /* warning: addr must be aligned */ |
a8170e5e | 2423 | static inline void stl_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 2424 | enum device_endian endian) |
8df1cd07 | 2425 | { |
8df1cd07 | 2426 | uint8_t *ptr; |
f3705d53 | 2427 | MemoryRegionSection *section; |
8df1cd07 | 2428 | |
ac1970fb | 2429 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
3b46e624 | 2430 | |
f3705d53 | 2431 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 2432 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 2433 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 2434 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 2435 | } |
1e78bcc1 AG |
2436 | #if defined(TARGET_WORDS_BIGENDIAN) |
2437 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2438 | val = bswap32(val); | |
2439 | } | |
2440 | #else | |
2441 | if (endian == DEVICE_BIG_ENDIAN) { | |
2442 | val = bswap32(val); | |
2443 | } | |
2444 | #endif | |
37ec01d4 | 2445 | io_mem_write(section->mr, addr, val, 4); |
8df1cd07 FB |
2446 | } else { |
2447 | unsigned long addr1; | |
f3705d53 | 2448 | addr1 = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 2449 | + memory_region_section_addr(section, addr); |
8df1cd07 | 2450 | /* RAM case */ |
5579c7f3 | 2451 | ptr = qemu_get_ram_ptr(addr1); |
1e78bcc1 AG |
2452 | switch (endian) { |
2453 | case DEVICE_LITTLE_ENDIAN: | |
2454 | stl_le_p(ptr, val); | |
2455 | break; | |
2456 | case DEVICE_BIG_ENDIAN: | |
2457 | stl_be_p(ptr, val); | |
2458 | break; | |
2459 | default: | |
2460 | stl_p(ptr, val); | |
2461 | break; | |
2462 | } | |
51d7a9eb | 2463 | invalidate_and_set_dirty(addr1, 4); |
8df1cd07 FB |
2464 | } |
2465 | } | |
2466 | ||
a8170e5e | 2467 | void stl_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2468 | { |
2469 | stl_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
2470 | } | |
2471 | ||
a8170e5e | 2472 | void stl_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2473 | { |
2474 | stl_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
2475 | } | |
2476 | ||
a8170e5e | 2477 | void stl_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2478 | { |
2479 | stl_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
2480 | } | |
2481 | ||
aab33094 | 2482 | /* XXX: optimize */ |
a8170e5e | 2483 | void stb_phys(hwaddr addr, uint32_t val) |
aab33094 FB |
2484 | { |
2485 | uint8_t v = val; | |
2486 | cpu_physical_memory_write(addr, &v, 1); | |
2487 | } | |
2488 | ||
733f0b02 | 2489 | /* warning: addr must be aligned */ |
a8170e5e | 2490 | static inline void stw_phys_internal(hwaddr addr, uint32_t val, |
1e78bcc1 | 2491 | enum device_endian endian) |
aab33094 | 2492 | { |
733f0b02 | 2493 | uint8_t *ptr; |
f3705d53 | 2494 | MemoryRegionSection *section; |
733f0b02 | 2495 | |
ac1970fb | 2496 | section = phys_page_find(address_space_memory.dispatch, addr >> TARGET_PAGE_BITS); |
733f0b02 | 2497 | |
f3705d53 | 2498 | if (!memory_region_is_ram(section->mr) || section->readonly) { |
cc5bea60 | 2499 | addr = memory_region_section_addr(section, addr); |
f3705d53 | 2500 | if (memory_region_is_ram(section->mr)) { |
37ec01d4 | 2501 | section = &phys_sections[phys_section_rom]; |
06ef3525 | 2502 | } |
1e78bcc1 AG |
2503 | #if defined(TARGET_WORDS_BIGENDIAN) |
2504 | if (endian == DEVICE_LITTLE_ENDIAN) { | |
2505 | val = bswap16(val); | |
2506 | } | |
2507 | #else | |
2508 | if (endian == DEVICE_BIG_ENDIAN) { | |
2509 | val = bswap16(val); | |
2510 | } | |
2511 | #endif | |
37ec01d4 | 2512 | io_mem_write(section->mr, addr, val, 2); |
733f0b02 MT |
2513 | } else { |
2514 | unsigned long addr1; | |
f3705d53 | 2515 | addr1 = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK) |
cc5bea60 | 2516 | + memory_region_section_addr(section, addr); |
733f0b02 MT |
2517 | /* RAM case */ |
2518 | ptr = qemu_get_ram_ptr(addr1); | |
1e78bcc1 AG |
2519 | switch (endian) { |
2520 | case DEVICE_LITTLE_ENDIAN: | |
2521 | stw_le_p(ptr, val); | |
2522 | break; | |
2523 | case DEVICE_BIG_ENDIAN: | |
2524 | stw_be_p(ptr, val); | |
2525 | break; | |
2526 | default: | |
2527 | stw_p(ptr, val); | |
2528 | break; | |
2529 | } | |
51d7a9eb | 2530 | invalidate_and_set_dirty(addr1, 2); |
733f0b02 | 2531 | } |
aab33094 FB |
2532 | } |
2533 | ||
a8170e5e | 2534 | void stw_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2535 | { |
2536 | stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN); | |
2537 | } | |
2538 | ||
a8170e5e | 2539 | void stw_le_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2540 | { |
2541 | stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN); | |
2542 | } | |
2543 | ||
a8170e5e | 2544 | void stw_be_phys(hwaddr addr, uint32_t val) |
1e78bcc1 AG |
2545 | { |
2546 | stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN); | |
2547 | } | |
2548 | ||
aab33094 | 2549 | /* XXX: optimize */ |
a8170e5e | 2550 | void stq_phys(hwaddr addr, uint64_t val) |
aab33094 FB |
2551 | { |
2552 | val = tswap64(val); | |
71d2b725 | 2553 | cpu_physical_memory_write(addr, &val, 8); |
aab33094 FB |
2554 | } |
2555 | ||
a8170e5e | 2556 | void stq_le_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2557 | { |
2558 | val = cpu_to_le64(val); | |
2559 | cpu_physical_memory_write(addr, &val, 8); | |
2560 | } | |
2561 | ||
a8170e5e | 2562 | void stq_be_phys(hwaddr addr, uint64_t val) |
1e78bcc1 AG |
2563 | { |
2564 | val = cpu_to_be64(val); | |
2565 | cpu_physical_memory_write(addr, &val, 8); | |
2566 | } | |
2567 | ||
5e2972fd | 2568 | /* virtual memory access for debug (includes writing to ROM) */ |
9349b4f9 | 2569 | int cpu_memory_rw_debug(CPUArchState *env, target_ulong addr, |
b448f2f3 | 2570 | uint8_t *buf, int len, int is_write) |
13eb76e0 FB |
2571 | { |
2572 | int l; | |
a8170e5e | 2573 | hwaddr phys_addr; |
9b3c35e0 | 2574 | target_ulong page; |
13eb76e0 FB |
2575 | |
2576 | while (len > 0) { | |
2577 | page = addr & TARGET_PAGE_MASK; | |
2578 | phys_addr = cpu_get_phys_page_debug(env, page); | |
2579 | /* if no physical page mapped, return an error */ | |
2580 | if (phys_addr == -1) | |
2581 | return -1; | |
2582 | l = (page + TARGET_PAGE_SIZE) - addr; | |
2583 | if (l > len) | |
2584 | l = len; | |
5e2972fd | 2585 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
5e2972fd AL |
2586 | if (is_write) |
2587 | cpu_physical_memory_write_rom(phys_addr, buf, l); | |
2588 | else | |
5e2972fd | 2589 | cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
13eb76e0 FB |
2590 | len -= l; |
2591 | buf += l; | |
2592 | addr += l; | |
2593 | } | |
2594 | return 0; | |
2595 | } | |
a68fe89c | 2596 | #endif |
13eb76e0 | 2597 | |
8e4a424b BS |
2598 | #if !defined(CONFIG_USER_ONLY) |
2599 | ||
2600 | /* | |
2601 | * A helper function for the _utterly broken_ virtio device model to find out if | |
2602 | * it's running on a big endian machine. Don't do this at home kids! | |
2603 | */ | |
2604 | bool virtio_is_big_endian(void); | |
2605 | bool virtio_is_big_endian(void) | |
2606 | { | |
2607 | #if defined(TARGET_WORDS_BIGENDIAN) | |
2608 | return true; | |
2609 | #else | |
2610 | return false; | |
2611 | #endif | |
2612 | } | |
2613 | ||
2614 | #endif | |
2615 | ||
76f35538 | 2616 | #ifndef CONFIG_USER_ONLY |
a8170e5e | 2617 | bool cpu_physical_memory_is_io(hwaddr phys_addr) |
76f35538 WC |
2618 | { |
2619 | MemoryRegionSection *section; | |
2620 | ||
ac1970fb AK |
2621 | section = phys_page_find(address_space_memory.dispatch, |
2622 | phys_addr >> TARGET_PAGE_BITS); | |
76f35538 WC |
2623 | |
2624 | return !(memory_region_is_ram(section->mr) || | |
2625 | memory_region_is_romd(section->mr)); | |
2626 | } | |
2627 | #endif |