The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1 | /* |
| 2 | * virtual page mapping and translated block handling |
| 3 | * |
| 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 |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 18 | */ |
| 19 | #include "config.h" |
| 20 | #ifdef _WIN32 |
| 21 | #define WIN32_LEAN_AND_MEAN |
| 22 | #include <windows.h> |
| 23 | #else |
| 24 | #include <sys/types.h> |
| 25 | #include <sys/mman.h> |
| 26 | #endif |
| 27 | #include <stdlib.h> |
| 28 | #include <stdio.h> |
| 29 | #include <stdarg.h> |
| 30 | #include <string.h> |
| 31 | #include <errno.h> |
| 32 | #include <unistd.h> |
| 33 | #include <inttypes.h> |
| 34 | |
| 35 | #include "cpu.h" |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 36 | #include "exec/exec-all.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 37 | #include "qemu-common.h" |
| 38 | #include "tcg.h" |
| 39 | #include "hw/hw.h" |
David 'Digit' Turner | 8456913 | 2013-12-13 17:34:07 +0100 | [diff] [blame] | 40 | #include "qemu/osdep.h" |
David 'Digit' Turner | 34c48ff | 2013-12-15 00:25:03 +0100 | [diff] [blame] | 41 | #include "sysemu/kvm.h" |
David 'Digit' Turner | e1e03df | 2013-12-15 00:42:21 +0100 | [diff] [blame^] | 42 | #include "exec/hax.h" |
David 'Digit' Turner | 7a78db7 | 2013-12-14 11:46:01 +0100 | [diff] [blame] | 43 | #include "qemu/timer.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 44 | #if defined(CONFIG_USER_ONLY) |
| 45 | #include <qemu.h> |
| 46 | #endif |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 47 | #ifdef CONFIG_MEMCHECK |
| 48 | #include "memcheck/memcheck_api.h" |
| 49 | #endif // CONFIG_MEMCHECK |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 50 | |
| 51 | //#define DEBUG_TB_INVALIDATE |
| 52 | //#define DEBUG_FLUSH |
| 53 | //#define DEBUG_TLB |
| 54 | //#define DEBUG_UNASSIGNED |
| 55 | |
| 56 | /* make various TB consistency checks */ |
| 57 | //#define DEBUG_TB_CHECK |
| 58 | //#define DEBUG_TLB_CHECK |
| 59 | |
| 60 | //#define DEBUG_IOPORT |
| 61 | //#define DEBUG_SUBPAGE |
| 62 | |
| 63 | #if !defined(CONFIG_USER_ONLY) |
| 64 | /* TB consistency checks only implemented for usermode emulation. */ |
| 65 | #undef DEBUG_TB_CHECK |
| 66 | #endif |
| 67 | |
| 68 | #define SMC_BITMAP_USE_THRESHOLD 10 |
| 69 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 70 | #if defined(TARGET_SPARC64) |
| 71 | #define TARGET_PHYS_ADDR_SPACE_BITS 41 |
| 72 | #elif defined(TARGET_SPARC) |
| 73 | #define TARGET_PHYS_ADDR_SPACE_BITS 36 |
| 74 | #elif defined(TARGET_ALPHA) |
| 75 | #define TARGET_PHYS_ADDR_SPACE_BITS 42 |
| 76 | #define TARGET_VIRT_ADDR_SPACE_BITS 42 |
| 77 | #elif defined(TARGET_PPC64) |
| 78 | #define TARGET_PHYS_ADDR_SPACE_BITS 42 |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 79 | #elif defined(TARGET_X86_64) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 80 | #define TARGET_PHYS_ADDR_SPACE_BITS 42 |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 81 | #elif defined(TARGET_I386) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 82 | #define TARGET_PHYS_ADDR_SPACE_BITS 36 |
| 83 | #else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 84 | #define TARGET_PHYS_ADDR_SPACE_BITS 32 |
| 85 | #endif |
| 86 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 87 | static TranslationBlock *tbs; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 88 | int code_gen_max_blocks; |
| 89 | TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 90 | static int nb_tbs; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 91 | /* any access to the tbs or the page table must use this lock */ |
| 92 | spinlock_t tb_lock = SPIN_LOCK_UNLOCKED; |
| 93 | |
| 94 | #if defined(__arm__) || defined(__sparc_v9__) |
| 95 | /* The prologue must be reachable with a direct jump. ARM and Sparc64 |
| 96 | have limited branch ranges (possibly also PPC) so place it in a |
| 97 | section close to code segment. */ |
| 98 | #define code_gen_section \ |
| 99 | __attribute__((__section__(".gen_code"))) \ |
| 100 | __attribute__((aligned (32))) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 101 | #elif defined(_WIN32) |
| 102 | /* Maximum alignment for Win32 is 16. */ |
| 103 | #define code_gen_section \ |
| 104 | __attribute__((aligned (16))) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 105 | #else |
| 106 | #define code_gen_section \ |
| 107 | __attribute__((aligned (32))) |
| 108 | #endif |
| 109 | |
| 110 | uint8_t code_gen_prologue[1024] code_gen_section; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 111 | static uint8_t *code_gen_buffer; |
| 112 | static unsigned long code_gen_buffer_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 113 | /* threshold to flush the translated code buffer */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 114 | static unsigned long code_gen_buffer_max_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 115 | uint8_t *code_gen_ptr; |
| 116 | |
| 117 | #if !defined(CONFIG_USER_ONLY) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 118 | int phys_ram_fd; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 119 | static int in_migration; |
| 120 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 121 | RAMList ram_list = { .blocks = QLIST_HEAD_INITIALIZER(ram_list) }; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 122 | #endif |
| 123 | |
| 124 | CPUState *first_cpu; |
| 125 | /* current CPU in the current thread. It is only valid inside |
| 126 | cpu_exec() */ |
| 127 | CPUState *cpu_single_env; |
| 128 | /* 0 = Do not count executed instructions. |
| 129 | 1 = Precise instruction counting. |
| 130 | 2 = Adaptive rate instruction counting. */ |
| 131 | int use_icount = 0; |
| 132 | /* Current instruction counter. While executing translated code this may |
| 133 | include some instructions that have not yet been executed. */ |
| 134 | int64_t qemu_icount; |
| 135 | |
| 136 | typedef struct PageDesc { |
| 137 | /* list of TBs intersecting this ram page */ |
| 138 | TranslationBlock *first_tb; |
| 139 | /* in order to optimize self modifying code, we count the number |
| 140 | of lookups we do to a given page to use a bitmap */ |
| 141 | unsigned int code_write_count; |
| 142 | uint8_t *code_bitmap; |
| 143 | #if defined(CONFIG_USER_ONLY) |
| 144 | unsigned long flags; |
| 145 | #endif |
| 146 | } PageDesc; |
| 147 | |
| 148 | typedef struct PhysPageDesc { |
| 149 | /* offset in host memory of the page + io_index in the low bits */ |
| 150 | ram_addr_t phys_offset; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 151 | ram_addr_t region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 152 | } PhysPageDesc; |
| 153 | |
| 154 | #define L2_BITS 10 |
| 155 | #if defined(CONFIG_USER_ONLY) && defined(TARGET_VIRT_ADDR_SPACE_BITS) |
| 156 | /* XXX: this is a temporary hack for alpha target. |
| 157 | * In the future, this is to be replaced by a multi-level table |
| 158 | * to actually be able to handle the complete 64 bits address space. |
| 159 | */ |
| 160 | #define L1_BITS (TARGET_VIRT_ADDR_SPACE_BITS - L2_BITS - TARGET_PAGE_BITS) |
| 161 | #else |
| 162 | #define L1_BITS (32 - L2_BITS - TARGET_PAGE_BITS) |
| 163 | #endif |
| 164 | |
| 165 | #define L1_SIZE (1 << L1_BITS) |
| 166 | #define L2_SIZE (1 << L2_BITS) |
| 167 | |
| 168 | unsigned long qemu_real_host_page_size; |
| 169 | unsigned long qemu_host_page_bits; |
| 170 | unsigned long qemu_host_page_size; |
| 171 | unsigned long qemu_host_page_mask; |
| 172 | |
| 173 | /* XXX: for system emulation, it could just be an array */ |
| 174 | static PageDesc *l1_map[L1_SIZE]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 175 | static PhysPageDesc **l1_phys_map; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 176 | |
| 177 | #if !defined(CONFIG_USER_ONLY) |
| 178 | static void io_mem_init(void); |
| 179 | |
| 180 | /* io memory support */ |
| 181 | CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4]; |
| 182 | CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4]; |
| 183 | void *io_mem_opaque[IO_MEM_NB_ENTRIES]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 184 | static char io_mem_used[IO_MEM_NB_ENTRIES]; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 185 | static int io_mem_watch; |
| 186 | #endif |
| 187 | |
| 188 | /* log support */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 189 | #ifdef WIN32 |
| 190 | static const char *logfilename = "qemu.log"; |
| 191 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 192 | static const char *logfilename = "/tmp/qemu.log"; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 193 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 194 | FILE *logfile; |
| 195 | int loglevel; |
| 196 | static int log_append = 0; |
| 197 | |
| 198 | /* statistics */ |
| 199 | static int tlb_flush_count; |
| 200 | static int tb_flush_count; |
| 201 | static int tb_phys_invalidate_count; |
| 202 | |
| 203 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
| 204 | typedef struct subpage_t { |
| 205 | target_phys_addr_t base; |
| 206 | CPUReadMemoryFunc **mem_read[TARGET_PAGE_SIZE][4]; |
| 207 | CPUWriteMemoryFunc **mem_write[TARGET_PAGE_SIZE][4]; |
| 208 | void *opaque[TARGET_PAGE_SIZE][2][4]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 209 | ram_addr_t region_offset[TARGET_PAGE_SIZE][2][4]; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 210 | } subpage_t; |
| 211 | |
| 212 | #ifdef _WIN32 |
| 213 | static void map_exec(void *addr, long size) |
| 214 | { |
| 215 | DWORD old_protect; |
| 216 | VirtualProtect(addr, size, |
| 217 | PAGE_EXECUTE_READWRITE, &old_protect); |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 218 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 219 | } |
| 220 | #else |
| 221 | static void map_exec(void *addr, long size) |
| 222 | { |
| 223 | unsigned long start, end, page_size; |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 224 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 225 | page_size = getpagesize(); |
| 226 | start = (unsigned long)addr; |
| 227 | start &= ~(page_size - 1); |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 228 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 229 | end = (unsigned long)addr + size; |
| 230 | end += page_size - 1; |
| 231 | end &= ~(page_size - 1); |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 232 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 233 | mprotect((void *)start, end - start, |
| 234 | PROT_READ | PROT_WRITE | PROT_EXEC); |
| 235 | } |
| 236 | #endif |
| 237 | |
| 238 | static void page_init(void) |
| 239 | { |
| 240 | /* NOTE: we can always suppose that qemu_host_page_size >= |
| 241 | TARGET_PAGE_SIZE */ |
| 242 | #ifdef _WIN32 |
| 243 | { |
| 244 | SYSTEM_INFO system_info; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 245 | |
| 246 | GetSystemInfo(&system_info); |
| 247 | qemu_real_host_page_size = system_info.dwPageSize; |
| 248 | } |
| 249 | #else |
| 250 | qemu_real_host_page_size = getpagesize(); |
| 251 | #endif |
| 252 | if (qemu_host_page_size == 0) |
| 253 | qemu_host_page_size = qemu_real_host_page_size; |
| 254 | if (qemu_host_page_size < TARGET_PAGE_SIZE) |
| 255 | qemu_host_page_size = TARGET_PAGE_SIZE; |
| 256 | qemu_host_page_bits = 0; |
| 257 | while ((1 << qemu_host_page_bits) < qemu_host_page_size) |
| 258 | qemu_host_page_bits++; |
| 259 | qemu_host_page_mask = ~(qemu_host_page_size - 1); |
| 260 | l1_phys_map = qemu_vmalloc(L1_SIZE * sizeof(void *)); |
| 261 | memset(l1_phys_map, 0, L1_SIZE * sizeof(void *)); |
| 262 | |
| 263 | #if !defined(_WIN32) && defined(CONFIG_USER_ONLY) |
| 264 | { |
| 265 | long long startaddr, endaddr; |
| 266 | FILE *f; |
| 267 | int n; |
| 268 | |
| 269 | mmap_lock(); |
| 270 | last_brk = (unsigned long)sbrk(0); |
| 271 | f = fopen("/proc/self/maps", "r"); |
| 272 | if (f) { |
| 273 | do { |
| 274 | n = fscanf (f, "%llx-%llx %*[^\n]\n", &startaddr, &endaddr); |
| 275 | if (n == 2) { |
| 276 | startaddr = MIN(startaddr, |
| 277 | (1ULL << TARGET_PHYS_ADDR_SPACE_BITS) - 1); |
| 278 | endaddr = MIN(endaddr, |
| 279 | (1ULL << TARGET_PHYS_ADDR_SPACE_BITS) - 1); |
| 280 | page_set_flags(startaddr & TARGET_PAGE_MASK, |
| 281 | TARGET_PAGE_ALIGN(endaddr), |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 282 | PAGE_RESERVED); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 283 | } |
| 284 | } while (!feof(f)); |
| 285 | fclose(f); |
| 286 | } |
| 287 | mmap_unlock(); |
| 288 | } |
| 289 | #endif |
| 290 | } |
| 291 | |
| 292 | static inline PageDesc **page_l1_map(target_ulong index) |
| 293 | { |
| 294 | #if TARGET_LONG_BITS > 32 |
| 295 | /* Host memory outside guest VM. For 32-bit targets we have already |
| 296 | excluded high addresses. */ |
| 297 | if (index > ((target_ulong)L2_SIZE * L1_SIZE)) |
| 298 | return NULL; |
| 299 | #endif |
| 300 | return &l1_map[index >> L2_BITS]; |
| 301 | } |
| 302 | |
| 303 | static inline PageDesc *page_find_alloc(target_ulong index) |
| 304 | { |
| 305 | PageDesc **lp, *p; |
| 306 | lp = page_l1_map(index); |
| 307 | if (!lp) |
| 308 | return NULL; |
| 309 | |
| 310 | p = *lp; |
| 311 | if (!p) { |
| 312 | /* allocate if not found */ |
| 313 | #if defined(CONFIG_USER_ONLY) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 314 | size_t len = sizeof(PageDesc) * L2_SIZE; |
| 315 | /* Don't use qemu_malloc because it may recurse. */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 316 | p = mmap(NULL, len, PROT_READ | PROT_WRITE, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 317 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| 318 | *lp = p; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 319 | if (h2g_valid(p)) { |
| 320 | unsigned long addr = h2g(p); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 321 | page_set_flags(addr & TARGET_PAGE_MASK, |
| 322 | TARGET_PAGE_ALIGN(addr + len), |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 323 | PAGE_RESERVED); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 324 | } |
| 325 | #else |
| 326 | p = qemu_mallocz(sizeof(PageDesc) * L2_SIZE); |
| 327 | *lp = p; |
| 328 | #endif |
| 329 | } |
| 330 | return p + (index & (L2_SIZE - 1)); |
| 331 | } |
| 332 | |
| 333 | static inline PageDesc *page_find(target_ulong index) |
| 334 | { |
| 335 | PageDesc **lp, *p; |
| 336 | lp = page_l1_map(index); |
| 337 | if (!lp) |
| 338 | return NULL; |
| 339 | |
| 340 | p = *lp; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 341 | if (!p) { |
| 342 | return NULL; |
| 343 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 344 | return p + (index & (L2_SIZE - 1)); |
| 345 | } |
| 346 | |
| 347 | static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc) |
| 348 | { |
| 349 | void **lp, **p; |
| 350 | PhysPageDesc *pd; |
| 351 | |
| 352 | p = (void **)l1_phys_map; |
| 353 | #if TARGET_PHYS_ADDR_SPACE_BITS > 32 |
| 354 | |
| 355 | #if TARGET_PHYS_ADDR_SPACE_BITS > (32 + L1_BITS) |
| 356 | #error unsupported TARGET_PHYS_ADDR_SPACE_BITS |
| 357 | #endif |
| 358 | lp = p + ((index >> (L1_BITS + L2_BITS)) & (L1_SIZE - 1)); |
| 359 | p = *lp; |
| 360 | if (!p) { |
| 361 | /* allocate if not found */ |
| 362 | if (!alloc) |
| 363 | return NULL; |
| 364 | p = qemu_vmalloc(sizeof(void *) * L1_SIZE); |
| 365 | memset(p, 0, sizeof(void *) * L1_SIZE); |
| 366 | *lp = p; |
| 367 | } |
| 368 | #endif |
| 369 | lp = p + ((index >> L2_BITS) & (L1_SIZE - 1)); |
| 370 | pd = *lp; |
| 371 | if (!pd) { |
| 372 | int i; |
| 373 | /* allocate if not found */ |
| 374 | if (!alloc) |
| 375 | return NULL; |
| 376 | pd = qemu_vmalloc(sizeof(PhysPageDesc) * L2_SIZE); |
| 377 | *lp = pd; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 378 | for (i = 0; i < L2_SIZE; i++) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 379 | pd[i].phys_offset = IO_MEM_UNASSIGNED; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 380 | pd[i].region_offset = (index + i) << TARGET_PAGE_BITS; |
| 381 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 382 | } |
| 383 | return ((PhysPageDesc *)pd) + (index & (L2_SIZE - 1)); |
| 384 | } |
| 385 | |
| 386 | static inline PhysPageDesc *phys_page_find(target_phys_addr_t index) |
| 387 | { |
| 388 | return phys_page_find_alloc(index, 0); |
| 389 | } |
| 390 | |
| 391 | #if !defined(CONFIG_USER_ONLY) |
| 392 | static void tlb_protect_code(ram_addr_t ram_addr); |
| 393 | static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr, |
| 394 | target_ulong vaddr); |
| 395 | #define mmap_lock() do { } while(0) |
| 396 | #define mmap_unlock() do { } while(0) |
| 397 | #endif |
| 398 | |
| 399 | #define DEFAULT_CODE_GEN_BUFFER_SIZE (32 * 1024 * 1024) |
| 400 | |
| 401 | #if defined(CONFIG_USER_ONLY) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 402 | /* Currently it is not recommended to allocate big chunks of data in |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 403 | user mode. It will change when a dedicated libc will be used */ |
| 404 | #define USE_STATIC_CODE_GEN_BUFFER |
| 405 | #endif |
| 406 | |
| 407 | #ifdef USE_STATIC_CODE_GEN_BUFFER |
| 408 | static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE]; |
| 409 | #endif |
| 410 | |
| 411 | static void code_gen_alloc(unsigned long tb_size) |
| 412 | { |
| 413 | #ifdef USE_STATIC_CODE_GEN_BUFFER |
| 414 | code_gen_buffer = static_code_gen_buffer; |
| 415 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; |
| 416 | map_exec(code_gen_buffer, code_gen_buffer_size); |
| 417 | #else |
| 418 | code_gen_buffer_size = tb_size; |
| 419 | if (code_gen_buffer_size == 0) { |
| 420 | #if defined(CONFIG_USER_ONLY) |
| 421 | /* in user mode, phys_ram_size is not meaningful */ |
| 422 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; |
| 423 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 424 | /* XXX: needs adjustments */ |
| 425 | code_gen_buffer_size = (unsigned long)(ram_size / 4); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 426 | #endif |
| 427 | } |
| 428 | if (code_gen_buffer_size < MIN_CODE_GEN_BUFFER_SIZE) |
| 429 | code_gen_buffer_size = MIN_CODE_GEN_BUFFER_SIZE; |
| 430 | /* The code gen buffer location may have constraints depending on |
| 431 | the host cpu and OS */ |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 432 | #if defined(__linux__) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 433 | { |
| 434 | int flags; |
| 435 | void *start = NULL; |
| 436 | |
| 437 | flags = MAP_PRIVATE | MAP_ANONYMOUS; |
| 438 | #if defined(__x86_64__) |
| 439 | flags |= MAP_32BIT; |
| 440 | /* Cannot map more than that */ |
| 441 | if (code_gen_buffer_size > (800 * 1024 * 1024)) |
| 442 | code_gen_buffer_size = (800 * 1024 * 1024); |
| 443 | #elif defined(__sparc_v9__) |
| 444 | // Map the buffer below 2G, so we can use direct calls and branches |
| 445 | flags |= MAP_FIXED; |
| 446 | start = (void *) 0x60000000UL; |
| 447 | if (code_gen_buffer_size > (512 * 1024 * 1024)) |
| 448 | code_gen_buffer_size = (512 * 1024 * 1024); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 449 | #elif defined(__arm__) |
| 450 | /* Map the buffer below 32M, so we can use direct calls and branches */ |
| 451 | flags |= MAP_FIXED; |
| 452 | start = (void *) 0x01000000UL; |
| 453 | if (code_gen_buffer_size > 16 * 1024 * 1024) |
| 454 | code_gen_buffer_size = 16 * 1024 * 1024; |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 455 | #elif defined(__s390x__) |
| 456 | /* Map the buffer so that we can use direct calls and branches. */ |
| 457 | /* We have a +- 4GB range on the branches; leave some slop. */ |
| 458 | if (code_gen_buffer_size > (3ul * 1024 * 1024 * 1024)) { |
| 459 | code_gen_buffer_size = 3ul * 1024 * 1024 * 1024; |
| 460 | } |
| 461 | start = (void *)0x90000000UL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 462 | #endif |
| 463 | code_gen_buffer = mmap(start, code_gen_buffer_size, |
| 464 | PROT_WRITE | PROT_READ | PROT_EXEC, |
| 465 | flags, -1, 0); |
| 466 | if (code_gen_buffer == MAP_FAILED) { |
| 467 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); |
| 468 | exit(1); |
| 469 | } |
| 470 | } |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 471 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \ |
| 472 | || defined(__DragonFly__) || defined(__OpenBSD__) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 473 | { |
| 474 | int flags; |
| 475 | void *addr = NULL; |
| 476 | flags = MAP_PRIVATE | MAP_ANONYMOUS; |
| 477 | #if defined(__x86_64__) |
| 478 | /* FreeBSD doesn't have MAP_32BIT, use MAP_FIXED and assume |
| 479 | * 0x40000000 is free */ |
| 480 | flags |= MAP_FIXED; |
| 481 | addr = (void *)0x40000000; |
| 482 | /* Cannot map more than that */ |
| 483 | if (code_gen_buffer_size > (800 * 1024 * 1024)) |
| 484 | code_gen_buffer_size = (800 * 1024 * 1024); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 485 | #elif defined(__sparc_v9__) |
| 486 | // Map the buffer below 2G, so we can use direct calls and branches |
| 487 | flags |= MAP_FIXED; |
| 488 | addr = (void *) 0x60000000UL; |
| 489 | if (code_gen_buffer_size > (512 * 1024 * 1024)) { |
| 490 | code_gen_buffer_size = (512 * 1024 * 1024); |
| 491 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 492 | #endif |
| 493 | code_gen_buffer = mmap(addr, code_gen_buffer_size, |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 494 | PROT_WRITE | PROT_READ | PROT_EXEC, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 495 | flags, -1, 0); |
| 496 | if (code_gen_buffer == MAP_FAILED) { |
| 497 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); |
| 498 | exit(1); |
| 499 | } |
| 500 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 501 | #else |
| 502 | code_gen_buffer = qemu_malloc(code_gen_buffer_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 503 | map_exec(code_gen_buffer, code_gen_buffer_size); |
| 504 | #endif |
| 505 | #endif /* !USE_STATIC_CODE_GEN_BUFFER */ |
| 506 | map_exec(code_gen_prologue, sizeof(code_gen_prologue)); |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 507 | code_gen_buffer_max_size = code_gen_buffer_size - |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 508 | code_gen_max_block_size(); |
| 509 | code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE; |
| 510 | tbs = qemu_malloc(code_gen_max_blocks * sizeof(TranslationBlock)); |
| 511 | } |
| 512 | |
| 513 | /* Must be called before using the QEMU cpus. 'tb_size' is the size |
| 514 | (in bytes) allocated to the translation buffer. Zero means default |
| 515 | size. */ |
| 516 | void cpu_exec_init_all(unsigned long tb_size) |
| 517 | { |
| 518 | cpu_gen_init(); |
| 519 | code_gen_alloc(tb_size); |
| 520 | code_gen_ptr = code_gen_buffer; |
| 521 | page_init(); |
| 522 | #if !defined(CONFIG_USER_ONLY) |
| 523 | io_mem_init(); |
| 524 | #endif |
David 'Digit' Turner | f1d9bf1 | 2011-05-11 18:19:41 +0200 | [diff] [blame] | 525 | #if !defined(CONFIG_USER_ONLY) || !defined(CONFIG_USE_GUEST_BASE) |
| 526 | /* There's no guest base to take into account, so go ahead and |
| 527 | initialize the prologue now. */ |
| 528 | tcg_prologue_init(&tcg_ctx); |
| 529 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
| 533 | |
| 534 | #define CPU_COMMON_SAVE_VERSION 1 |
| 535 | |
| 536 | static void cpu_common_save(QEMUFile *f, void *opaque) |
| 537 | { |
| 538 | CPUState *env = opaque; |
| 539 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 540 | cpu_synchronize_state(env, 0); |
| 541 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 542 | qemu_put_be32s(f, &env->halted); |
| 543 | qemu_put_be32s(f, &env->interrupt_request); |
| 544 | } |
| 545 | |
| 546 | static int cpu_common_load(QEMUFile *f, void *opaque, int version_id) |
| 547 | { |
| 548 | CPUState *env = opaque; |
| 549 | |
| 550 | if (version_id != CPU_COMMON_SAVE_VERSION) |
| 551 | return -EINVAL; |
| 552 | |
| 553 | qemu_get_be32s(f, &env->halted); |
| 554 | qemu_get_be32s(f, &env->interrupt_request); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 555 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
| 556 | version_id is increased. */ |
| 557 | env->interrupt_request &= ~0x01; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 558 | tlb_flush(env, 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 559 | cpu_synchronize_state(env, 1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 560 | |
| 561 | return 0; |
| 562 | } |
| 563 | #endif |
| 564 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 565 | CPUState *qemu_get_cpu(int cpu) |
| 566 | { |
| 567 | CPUState *env = first_cpu; |
| 568 | |
| 569 | while (env) { |
| 570 | if (env->cpu_index == cpu) |
| 571 | break; |
| 572 | env = env->next_cpu; |
| 573 | } |
| 574 | |
| 575 | return env; |
| 576 | } |
| 577 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 578 | void cpu_exec_init(CPUState *env) |
| 579 | { |
| 580 | CPUState **penv; |
| 581 | int cpu_index; |
| 582 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 583 | #if defined(CONFIG_USER_ONLY) |
| 584 | cpu_list_lock(); |
| 585 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 586 | env->next_cpu = NULL; |
| 587 | penv = &first_cpu; |
| 588 | cpu_index = 0; |
| 589 | while (*penv != NULL) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 590 | penv = &(*penv)->next_cpu; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 591 | cpu_index++; |
| 592 | } |
| 593 | env->cpu_index = cpu_index; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 594 | env->numa_node = 0; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 595 | QTAILQ_INIT(&env->breakpoints); |
| 596 | QTAILQ_INIT(&env->watchpoints); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 597 | *penv = env; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 598 | #if defined(CONFIG_USER_ONLY) |
| 599 | cpu_list_unlock(); |
| 600 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 601 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
| 602 | register_savevm("cpu_common", cpu_index, CPU_COMMON_SAVE_VERSION, |
| 603 | cpu_common_save, cpu_common_load, env); |
| 604 | register_savevm("cpu", cpu_index, CPU_SAVE_VERSION, |
| 605 | cpu_save, cpu_load, env); |
| 606 | #endif |
| 607 | } |
| 608 | |
| 609 | static inline void invalidate_page_bitmap(PageDesc *p) |
| 610 | { |
| 611 | if (p->code_bitmap) { |
| 612 | qemu_free(p->code_bitmap); |
| 613 | p->code_bitmap = NULL; |
| 614 | } |
| 615 | p->code_write_count = 0; |
| 616 | } |
| 617 | |
| 618 | /* set to NULL all the 'first_tb' fields in all PageDescs */ |
| 619 | static void page_flush_tb(void) |
| 620 | { |
| 621 | int i, j; |
| 622 | PageDesc *p; |
| 623 | |
| 624 | for(i = 0; i < L1_SIZE; i++) { |
| 625 | p = l1_map[i]; |
| 626 | if (p) { |
| 627 | for(j = 0; j < L2_SIZE; j++) { |
| 628 | p->first_tb = NULL; |
| 629 | invalidate_page_bitmap(p); |
| 630 | p++; |
| 631 | } |
| 632 | } |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | /* flush all the translation blocks */ |
| 637 | /* XXX: tb_flush is currently not thread safe */ |
| 638 | void tb_flush(CPUState *env1) |
| 639 | { |
| 640 | CPUState *env; |
| 641 | #if defined(DEBUG_FLUSH) |
| 642 | printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n", |
| 643 | (unsigned long)(code_gen_ptr - code_gen_buffer), |
| 644 | nb_tbs, nb_tbs > 0 ? |
| 645 | ((unsigned long)(code_gen_ptr - code_gen_buffer)) / nb_tbs : 0); |
| 646 | #endif |
| 647 | if ((unsigned long)(code_gen_ptr - code_gen_buffer) > code_gen_buffer_size) |
| 648 | cpu_abort(env1, "Internal error: code buffer overflow\n"); |
| 649 | |
| 650 | nb_tbs = 0; |
| 651 | |
| 652 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 653 | #ifdef CONFIG_MEMCHECK |
| 654 | int tb_to_clean; |
| 655 | for (tb_to_clean = 0; tb_to_clean < TB_JMP_CACHE_SIZE; tb_to_clean++) { |
| 656 | if (env->tb_jmp_cache[tb_to_clean] != NULL && |
| 657 | env->tb_jmp_cache[tb_to_clean]->tpc2gpc != NULL) { |
| 658 | qemu_free(env->tb_jmp_cache[tb_to_clean]->tpc2gpc); |
| 659 | env->tb_jmp_cache[tb_to_clean]->tpc2gpc = NULL; |
| 660 | env->tb_jmp_cache[tb_to_clean]->tpc2gpc_pairs = 0; |
| 661 | } |
| 662 | } |
| 663 | #endif // CONFIG_MEMCHECK |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 664 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); |
| 665 | } |
| 666 | |
| 667 | memset (tb_phys_hash, 0, CODE_GEN_PHYS_HASH_SIZE * sizeof (void *)); |
| 668 | page_flush_tb(); |
| 669 | |
| 670 | code_gen_ptr = code_gen_buffer; |
| 671 | /* XXX: flush processor icache at this point if cache flush is |
| 672 | expensive */ |
| 673 | tb_flush_count++; |
| 674 | } |
| 675 | |
| 676 | #ifdef DEBUG_TB_CHECK |
| 677 | |
| 678 | static void tb_invalidate_check(target_ulong address) |
| 679 | { |
| 680 | TranslationBlock *tb; |
| 681 | int i; |
| 682 | address &= TARGET_PAGE_MASK; |
| 683 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
| 684 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { |
| 685 | if (!(address + TARGET_PAGE_SIZE <= tb->pc || |
| 686 | address >= tb->pc + tb->size)) { |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 687 | printf("ERROR invalidate: address=" TARGET_FMT_lx |
| 688 | " PC=%08lx size=%04x\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 689 | address, (long)tb->pc, tb->size); |
| 690 | } |
| 691 | } |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | /* verify that all the pages have correct rights for code */ |
| 696 | static void tb_page_check(void) |
| 697 | { |
| 698 | TranslationBlock *tb; |
| 699 | int i, flags1, flags2; |
| 700 | |
| 701 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
| 702 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { |
| 703 | flags1 = page_get_flags(tb->pc); |
| 704 | flags2 = page_get_flags(tb->pc + tb->size - 1); |
| 705 | if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) { |
| 706 | printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n", |
| 707 | (long)tb->pc, tb->size, flags1, flags2); |
| 708 | } |
| 709 | } |
| 710 | } |
| 711 | } |
| 712 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 713 | #endif |
| 714 | |
| 715 | /* invalidate one TB */ |
| 716 | static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb, |
| 717 | int next_offset) |
| 718 | { |
| 719 | TranslationBlock *tb1; |
| 720 | for(;;) { |
| 721 | tb1 = *ptb; |
| 722 | if (tb1 == tb) { |
| 723 | *ptb = *(TranslationBlock **)((char *)tb1 + next_offset); |
| 724 | break; |
| 725 | } |
| 726 | ptb = (TranslationBlock **)((char *)tb1 + next_offset); |
| 727 | } |
| 728 | } |
| 729 | |
| 730 | static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb) |
| 731 | { |
| 732 | TranslationBlock *tb1; |
| 733 | unsigned int n1; |
| 734 | |
| 735 | for(;;) { |
| 736 | tb1 = *ptb; |
| 737 | n1 = (long)tb1 & 3; |
| 738 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 739 | if (tb1 == tb) { |
| 740 | *ptb = tb1->page_next[n1]; |
| 741 | break; |
| 742 | } |
| 743 | ptb = &tb1->page_next[n1]; |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | static inline void tb_jmp_remove(TranslationBlock *tb, int n) |
| 748 | { |
| 749 | TranslationBlock *tb1, **ptb; |
| 750 | unsigned int n1; |
| 751 | |
| 752 | ptb = &tb->jmp_next[n]; |
| 753 | tb1 = *ptb; |
| 754 | if (tb1) { |
| 755 | /* find tb(n) in circular list */ |
| 756 | for(;;) { |
| 757 | tb1 = *ptb; |
| 758 | n1 = (long)tb1 & 3; |
| 759 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 760 | if (n1 == n && tb1 == tb) |
| 761 | break; |
| 762 | if (n1 == 2) { |
| 763 | ptb = &tb1->jmp_first; |
| 764 | } else { |
| 765 | ptb = &tb1->jmp_next[n1]; |
| 766 | } |
| 767 | } |
| 768 | /* now we can suppress tb(n) from the list */ |
| 769 | *ptb = tb->jmp_next[n]; |
| 770 | |
| 771 | tb->jmp_next[n] = NULL; |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | /* reset the jump entry 'n' of a TB so that it is not chained to |
| 776 | another TB */ |
| 777 | static inline void tb_reset_jump(TranslationBlock *tb, int n) |
| 778 | { |
| 779 | tb_set_jmp_target(tb, n, (unsigned long)(tb->tc_ptr + tb->tb_next_offset[n])); |
| 780 | } |
| 781 | |
| 782 | void tb_phys_invalidate(TranslationBlock *tb, target_ulong page_addr) |
| 783 | { |
| 784 | CPUState *env; |
| 785 | PageDesc *p; |
| 786 | unsigned int h, n1; |
| 787 | target_phys_addr_t phys_pc; |
| 788 | TranslationBlock *tb1, *tb2; |
| 789 | |
| 790 | /* remove the TB from the hash list */ |
| 791 | phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); |
| 792 | h = tb_phys_hash_func(phys_pc); |
| 793 | tb_remove(&tb_phys_hash[h], tb, |
| 794 | offsetof(TranslationBlock, phys_hash_next)); |
| 795 | |
| 796 | /* remove the TB from the page list */ |
| 797 | if (tb->page_addr[0] != page_addr) { |
| 798 | p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS); |
| 799 | tb_page_remove(&p->first_tb, tb); |
| 800 | invalidate_page_bitmap(p); |
| 801 | } |
| 802 | if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) { |
| 803 | p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS); |
| 804 | tb_page_remove(&p->first_tb, tb); |
| 805 | invalidate_page_bitmap(p); |
| 806 | } |
| 807 | |
| 808 | tb_invalidated_flag = 1; |
| 809 | |
| 810 | /* remove the TB from the hash list */ |
| 811 | h = tb_jmp_cache_hash_func(tb->pc); |
| 812 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 813 | if (env->tb_jmp_cache[h] == tb) |
| 814 | env->tb_jmp_cache[h] = NULL; |
| 815 | } |
| 816 | |
| 817 | /* suppress this TB from the two jump lists */ |
| 818 | tb_jmp_remove(tb, 0); |
| 819 | tb_jmp_remove(tb, 1); |
| 820 | |
| 821 | /* suppress any remaining jumps to this TB */ |
| 822 | tb1 = tb->jmp_first; |
| 823 | for(;;) { |
| 824 | n1 = (long)tb1 & 3; |
| 825 | if (n1 == 2) |
| 826 | break; |
| 827 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 828 | tb2 = tb1->jmp_next[n1]; |
| 829 | tb_reset_jump(tb1, n1); |
| 830 | tb1->jmp_next[n1] = NULL; |
| 831 | tb1 = tb2; |
| 832 | } |
| 833 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); /* fail safe */ |
| 834 | |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 835 | #ifdef CONFIG_MEMCHECK |
| 836 | if (tb->tpc2gpc != NULL) { |
| 837 | qemu_free(tb->tpc2gpc); |
| 838 | tb->tpc2gpc = NULL; |
| 839 | tb->tpc2gpc_pairs = 0; |
| 840 | } |
| 841 | #endif // CONFIG_MEMCHECK |
| 842 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 843 | tb_phys_invalidate_count++; |
| 844 | } |
| 845 | |
| 846 | static inline void set_bits(uint8_t *tab, int start, int len) |
| 847 | { |
| 848 | int end, mask, end1; |
| 849 | |
| 850 | end = start + len; |
| 851 | tab += start >> 3; |
| 852 | mask = 0xff << (start & 7); |
| 853 | if ((start & ~7) == (end & ~7)) { |
| 854 | if (start < end) { |
| 855 | mask &= ~(0xff << (end & 7)); |
| 856 | *tab |= mask; |
| 857 | } |
| 858 | } else { |
| 859 | *tab++ |= mask; |
| 860 | start = (start + 8) & ~7; |
| 861 | end1 = end & ~7; |
| 862 | while (start < end1) { |
| 863 | *tab++ = 0xff; |
| 864 | start += 8; |
| 865 | } |
| 866 | if (start < end) { |
| 867 | mask = ~(0xff << (end & 7)); |
| 868 | *tab |= mask; |
| 869 | } |
| 870 | } |
| 871 | } |
| 872 | |
| 873 | static void build_page_bitmap(PageDesc *p) |
| 874 | { |
| 875 | int n, tb_start, tb_end; |
| 876 | TranslationBlock *tb; |
| 877 | |
| 878 | p->code_bitmap = qemu_mallocz(TARGET_PAGE_SIZE / 8); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 879 | |
| 880 | tb = p->first_tb; |
| 881 | while (tb != NULL) { |
| 882 | n = (long)tb & 3; |
| 883 | tb = (TranslationBlock *)((long)tb & ~3); |
| 884 | /* NOTE: this is subtle as a TB may span two physical pages */ |
| 885 | if (n == 0) { |
| 886 | /* NOTE: tb_end may be after the end of the page, but |
| 887 | it is not a problem */ |
| 888 | tb_start = tb->pc & ~TARGET_PAGE_MASK; |
| 889 | tb_end = tb_start + tb->size; |
| 890 | if (tb_end > TARGET_PAGE_SIZE) |
| 891 | tb_end = TARGET_PAGE_SIZE; |
| 892 | } else { |
| 893 | tb_start = 0; |
| 894 | tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); |
| 895 | } |
| 896 | set_bits(p->code_bitmap, tb_start, tb_end - tb_start); |
| 897 | tb = tb->page_next[n]; |
| 898 | } |
| 899 | } |
| 900 | |
| 901 | TranslationBlock *tb_gen_code(CPUState *env, |
| 902 | target_ulong pc, target_ulong cs_base, |
| 903 | int flags, int cflags) |
| 904 | { |
| 905 | TranslationBlock *tb; |
| 906 | uint8_t *tc_ptr; |
| 907 | target_ulong phys_pc, phys_page2, virt_page2; |
| 908 | int code_gen_size; |
| 909 | |
| 910 | phys_pc = get_phys_addr_code(env, pc); |
| 911 | tb = tb_alloc(pc); |
| 912 | if (!tb) { |
| 913 | /* flush must be done */ |
| 914 | tb_flush(env); |
| 915 | /* cannot fail at this point */ |
| 916 | tb = tb_alloc(pc); |
| 917 | /* Don't forget to invalidate previous TB info. */ |
| 918 | tb_invalidated_flag = 1; |
| 919 | } |
| 920 | tc_ptr = code_gen_ptr; |
| 921 | tb->tc_ptr = tc_ptr; |
| 922 | tb->cs_base = cs_base; |
| 923 | tb->flags = flags; |
| 924 | tb->cflags = cflags; |
| 925 | #ifdef CONFIG_TRACE |
| 926 | tb->bb_rec = NULL; |
| 927 | tb->prev_time = 0; |
| 928 | #endif |
| 929 | cpu_gen_code(env, tb, &code_gen_size); |
| 930 | code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); |
| 931 | |
| 932 | /* check next page if needed */ |
| 933 | virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; |
| 934 | phys_page2 = -1; |
| 935 | if ((pc & TARGET_PAGE_MASK) != virt_page2) { |
| 936 | phys_page2 = get_phys_addr_code(env, virt_page2); |
| 937 | } |
| 938 | tb_link_phys(tb, phys_pc, phys_page2); |
| 939 | return tb; |
| 940 | } |
| 941 | |
| 942 | /* invalidate all TBs which intersect with the target physical page |
| 943 | starting in range [start;end[. NOTE: start and end must refer to |
| 944 | the same physical page. 'is_cpu_write_access' should be true if called |
| 945 | from a real cpu write access: the virtual CPU will exit the current |
| 946 | TB if code is modified inside this TB. */ |
| 947 | void tb_invalidate_phys_page_range(target_phys_addr_t start, target_phys_addr_t end, |
| 948 | int is_cpu_write_access) |
| 949 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 950 | TranslationBlock *tb, *tb_next, *saved_tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 951 | CPUState *env = cpu_single_env; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 952 | target_ulong tb_start, tb_end; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 953 | PageDesc *p; |
| 954 | int n; |
| 955 | #ifdef TARGET_HAS_PRECISE_SMC |
| 956 | int current_tb_not_found = is_cpu_write_access; |
| 957 | TranslationBlock *current_tb = NULL; |
| 958 | int current_tb_modified = 0; |
| 959 | target_ulong current_pc = 0; |
| 960 | target_ulong current_cs_base = 0; |
| 961 | int current_flags = 0; |
| 962 | #endif /* TARGET_HAS_PRECISE_SMC */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 963 | |
| 964 | p = page_find(start >> TARGET_PAGE_BITS); |
| 965 | if (!p) |
| 966 | return; |
| 967 | if (!p->code_bitmap && |
| 968 | ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && |
| 969 | is_cpu_write_access) { |
| 970 | /* build code bitmap */ |
| 971 | build_page_bitmap(p); |
| 972 | } |
| 973 | |
| 974 | /* we remove all the TBs in the range [start, end[ */ |
| 975 | /* XXX: see if in some cases it could be faster to invalidate all the code */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 976 | tb = p->first_tb; |
| 977 | while (tb != NULL) { |
| 978 | n = (long)tb & 3; |
| 979 | tb = (TranslationBlock *)((long)tb & ~3); |
| 980 | tb_next = tb->page_next[n]; |
| 981 | /* NOTE: this is subtle as a TB may span two physical pages */ |
| 982 | if (n == 0) { |
| 983 | /* NOTE: tb_end may be after the end of the page, but |
| 984 | it is not a problem */ |
| 985 | tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); |
| 986 | tb_end = tb_start + tb->size; |
| 987 | } else { |
| 988 | tb_start = tb->page_addr[1]; |
| 989 | tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); |
| 990 | } |
| 991 | if (!(tb_end <= start || tb_start >= end)) { |
| 992 | #ifdef TARGET_HAS_PRECISE_SMC |
| 993 | if (current_tb_not_found) { |
| 994 | current_tb_not_found = 0; |
| 995 | current_tb = NULL; |
| 996 | if (env->mem_io_pc) { |
| 997 | /* now we have a real cpu fault */ |
| 998 | current_tb = tb_find_pc(env->mem_io_pc); |
| 999 | } |
| 1000 | } |
| 1001 | if (current_tb == tb && |
| 1002 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
| 1003 | /* If we are modifying the current TB, we must stop |
| 1004 | its execution. We could be more precise by checking |
| 1005 | that the modification is after the current PC, but it |
| 1006 | would require a specialized function to partially |
| 1007 | restore the CPU state */ |
| 1008 | |
| 1009 | current_tb_modified = 1; |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 1010 | cpu_restore_state(current_tb, env, env->mem_io_pc); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1011 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
| 1012 | ¤t_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1013 | } |
| 1014 | #endif /* TARGET_HAS_PRECISE_SMC */ |
| 1015 | /* we need to do that to handle the case where a signal |
| 1016 | occurs while doing tb_phys_invalidate() */ |
| 1017 | saved_tb = NULL; |
| 1018 | if (env) { |
| 1019 | saved_tb = env->current_tb; |
| 1020 | env->current_tb = NULL; |
| 1021 | } |
| 1022 | tb_phys_invalidate(tb, -1); |
| 1023 | if (env) { |
| 1024 | env->current_tb = saved_tb; |
| 1025 | if (env->interrupt_request && env->current_tb) |
| 1026 | cpu_interrupt(env, env->interrupt_request); |
| 1027 | } |
| 1028 | } |
| 1029 | tb = tb_next; |
| 1030 | } |
| 1031 | #if !defined(CONFIG_USER_ONLY) |
| 1032 | /* if no code remaining, no need to continue to use slow writes */ |
| 1033 | if (!p->first_tb) { |
| 1034 | invalidate_page_bitmap(p); |
| 1035 | if (is_cpu_write_access) { |
| 1036 | tlb_unprotect_code_phys(env, start, env->mem_io_vaddr); |
| 1037 | } |
| 1038 | } |
| 1039 | #endif |
| 1040 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1041 | if (current_tb_modified) { |
| 1042 | /* we generate a block containing just the instruction |
| 1043 | modifying the memory. It will ensure that it cannot modify |
| 1044 | itself */ |
| 1045 | env->current_tb = NULL; |
| 1046 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
| 1047 | cpu_resume_from_signal(env, NULL); |
| 1048 | } |
| 1049 | #endif |
| 1050 | } |
| 1051 | |
| 1052 | /* len must be <= 8 and start must be a multiple of len */ |
| 1053 | static inline void tb_invalidate_phys_page_fast(target_phys_addr_t start, int len) |
| 1054 | { |
| 1055 | PageDesc *p; |
| 1056 | int offset, b; |
| 1057 | #if 0 |
| 1058 | if (1) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1059 | qemu_log("modifying code at 0x%x size=%d EIP=%x PC=%08x\n", |
| 1060 | cpu_single_env->mem_io_vaddr, len, |
| 1061 | cpu_single_env->eip, |
| 1062 | cpu_single_env->eip + (long)cpu_single_env->segs[R_CS].base); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1063 | } |
| 1064 | #endif |
| 1065 | p = page_find(start >> TARGET_PAGE_BITS); |
| 1066 | if (!p) |
| 1067 | return; |
| 1068 | if (p->code_bitmap) { |
| 1069 | offset = start & ~TARGET_PAGE_MASK; |
| 1070 | b = p->code_bitmap[offset >> 3] >> (offset & 7); |
| 1071 | if (b & ((1 << len) - 1)) |
| 1072 | goto do_invalidate; |
| 1073 | } else { |
| 1074 | do_invalidate: |
| 1075 | tb_invalidate_phys_page_range(start, start + len, 1); |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | #if !defined(CONFIG_SOFTMMU) |
| 1080 | static void tb_invalidate_phys_page(target_phys_addr_t addr, |
| 1081 | unsigned long pc, void *puc) |
| 1082 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1083 | TranslationBlock *tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1084 | PageDesc *p; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1085 | int n; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1086 | #ifdef TARGET_HAS_PRECISE_SMC |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1087 | TranslationBlock *current_tb = NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1088 | CPUState *env = cpu_single_env; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1089 | int current_tb_modified = 0; |
| 1090 | target_ulong current_pc = 0; |
| 1091 | target_ulong current_cs_base = 0; |
| 1092 | int current_flags = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1093 | #endif |
| 1094 | |
| 1095 | addr &= TARGET_PAGE_MASK; |
| 1096 | p = page_find(addr >> TARGET_PAGE_BITS); |
| 1097 | if (!p) |
| 1098 | return; |
| 1099 | tb = p->first_tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1100 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1101 | if (tb && pc != 0) { |
| 1102 | current_tb = tb_find_pc(pc); |
| 1103 | } |
| 1104 | #endif |
| 1105 | while (tb != NULL) { |
| 1106 | n = (long)tb & 3; |
| 1107 | tb = (TranslationBlock *)((long)tb & ~3); |
| 1108 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1109 | if (current_tb == tb && |
| 1110 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
| 1111 | /* If we are modifying the current TB, we must stop |
| 1112 | its execution. We could be more precise by checking |
| 1113 | that the modification is after the current PC, but it |
| 1114 | would require a specialized function to partially |
| 1115 | restore the CPU state */ |
| 1116 | |
| 1117 | current_tb_modified = 1; |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 1118 | cpu_restore_state(current_tb, env, pc); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1119 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
| 1120 | ¤t_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1121 | } |
| 1122 | #endif /* TARGET_HAS_PRECISE_SMC */ |
| 1123 | tb_phys_invalidate(tb, addr); |
| 1124 | tb = tb->page_next[n]; |
| 1125 | } |
| 1126 | p->first_tb = NULL; |
| 1127 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1128 | if (current_tb_modified) { |
| 1129 | /* we generate a block containing just the instruction |
| 1130 | modifying the memory. It will ensure that it cannot modify |
| 1131 | itself */ |
| 1132 | env->current_tb = NULL; |
| 1133 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
| 1134 | cpu_resume_from_signal(env, puc); |
| 1135 | } |
| 1136 | #endif |
| 1137 | } |
| 1138 | #endif |
| 1139 | |
| 1140 | /* add the tb in the target page and protect it if necessary */ |
| 1141 | static inline void tb_alloc_page(TranslationBlock *tb, |
| 1142 | unsigned int n, target_ulong page_addr) |
| 1143 | { |
| 1144 | PageDesc *p; |
| 1145 | TranslationBlock *last_first_tb; |
| 1146 | |
| 1147 | tb->page_addr[n] = page_addr; |
| 1148 | p = page_find_alloc(page_addr >> TARGET_PAGE_BITS); |
| 1149 | tb->page_next[n] = p->first_tb; |
| 1150 | last_first_tb = p->first_tb; |
| 1151 | p->first_tb = (TranslationBlock *)((long)tb | n); |
| 1152 | invalidate_page_bitmap(p); |
| 1153 | |
| 1154 | #if defined(TARGET_HAS_SMC) || 1 |
| 1155 | |
| 1156 | #if defined(CONFIG_USER_ONLY) |
| 1157 | if (p->flags & PAGE_WRITE) { |
| 1158 | target_ulong addr; |
| 1159 | PageDesc *p2; |
| 1160 | int prot; |
| 1161 | |
| 1162 | /* force the host page as non writable (writes will have a |
| 1163 | page fault + mprotect overhead) */ |
| 1164 | page_addr &= qemu_host_page_mask; |
| 1165 | prot = 0; |
| 1166 | for(addr = page_addr; addr < page_addr + qemu_host_page_size; |
| 1167 | addr += TARGET_PAGE_SIZE) { |
| 1168 | |
| 1169 | p2 = page_find (addr >> TARGET_PAGE_BITS); |
| 1170 | if (!p2) |
| 1171 | continue; |
| 1172 | prot |= p2->flags; |
| 1173 | p2->flags &= ~PAGE_WRITE; |
| 1174 | page_get_flags(addr); |
| 1175 | } |
| 1176 | mprotect(g2h(page_addr), qemu_host_page_size, |
| 1177 | (prot & PAGE_BITS) & ~PAGE_WRITE); |
| 1178 | #ifdef DEBUG_TB_INVALIDATE |
| 1179 | printf("protecting code page: 0x" TARGET_FMT_lx "\n", |
| 1180 | page_addr); |
| 1181 | #endif |
| 1182 | } |
| 1183 | #else |
| 1184 | /* if some code is already present, then the pages are already |
| 1185 | protected. So we handle the case where only the first TB is |
| 1186 | allocated in a physical page */ |
| 1187 | if (!last_first_tb) { |
| 1188 | tlb_protect_code(page_addr); |
| 1189 | } |
| 1190 | #endif |
| 1191 | |
| 1192 | #endif /* TARGET_HAS_SMC */ |
| 1193 | } |
| 1194 | |
| 1195 | /* Allocate a new translation block. Flush the translation buffer if |
| 1196 | too many translation blocks or too much generated code. */ |
| 1197 | TranslationBlock *tb_alloc(target_ulong pc) |
| 1198 | { |
| 1199 | TranslationBlock *tb; |
| 1200 | |
| 1201 | if (nb_tbs >= code_gen_max_blocks || |
| 1202 | (code_gen_ptr - code_gen_buffer) >= code_gen_buffer_max_size) |
| 1203 | return NULL; |
| 1204 | tb = &tbs[nb_tbs++]; |
| 1205 | tb->pc = pc; |
| 1206 | tb->cflags = 0; |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 1207 | #ifdef CONFIG_MEMCHECK |
| 1208 | tb->tpc2gpc = NULL; |
| 1209 | tb->tpc2gpc_pairs = 0; |
| 1210 | #endif // CONFIG_MEMCHECK |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1211 | return tb; |
| 1212 | } |
| 1213 | |
| 1214 | void tb_free(TranslationBlock *tb) |
| 1215 | { |
| 1216 | /* In practice this is mostly used for single use temporary TB |
| 1217 | Ignore the hard cases and just back up if this TB happens to |
| 1218 | be the last one generated. */ |
| 1219 | if (nb_tbs > 0 && tb == &tbs[nb_tbs - 1]) { |
| 1220 | code_gen_ptr = tb->tc_ptr; |
| 1221 | nb_tbs--; |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | /* add a new TB and link it to the physical page tables. phys_page2 is |
| 1226 | (-1) to indicate that only one page contains the TB. */ |
| 1227 | void tb_link_phys(TranslationBlock *tb, |
| 1228 | target_ulong phys_pc, target_ulong phys_page2) |
| 1229 | { |
| 1230 | unsigned int h; |
| 1231 | TranslationBlock **ptb; |
| 1232 | |
| 1233 | /* Grab the mmap lock to stop another thread invalidating this TB |
| 1234 | before we are done. */ |
| 1235 | mmap_lock(); |
| 1236 | /* add in the physical hash table */ |
| 1237 | h = tb_phys_hash_func(phys_pc); |
| 1238 | ptb = &tb_phys_hash[h]; |
| 1239 | tb->phys_hash_next = *ptb; |
| 1240 | *ptb = tb; |
| 1241 | |
| 1242 | /* add in the page list */ |
| 1243 | tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK); |
| 1244 | if (phys_page2 != -1) |
| 1245 | tb_alloc_page(tb, 1, phys_page2); |
| 1246 | else |
| 1247 | tb->page_addr[1] = -1; |
| 1248 | |
| 1249 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); |
| 1250 | tb->jmp_next[0] = NULL; |
| 1251 | tb->jmp_next[1] = NULL; |
| 1252 | |
| 1253 | /* init original jump addresses */ |
| 1254 | if (tb->tb_next_offset[0] != 0xffff) |
| 1255 | tb_reset_jump(tb, 0); |
| 1256 | if (tb->tb_next_offset[1] != 0xffff) |
| 1257 | tb_reset_jump(tb, 1); |
| 1258 | |
| 1259 | #ifdef DEBUG_TB_CHECK |
| 1260 | tb_page_check(); |
| 1261 | #endif |
| 1262 | mmap_unlock(); |
| 1263 | } |
| 1264 | |
| 1265 | /* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr < |
| 1266 | tb[1].tc_ptr. Return NULL if not found */ |
| 1267 | TranslationBlock *tb_find_pc(unsigned long tc_ptr) |
| 1268 | { |
| 1269 | int m_min, m_max, m; |
| 1270 | unsigned long v; |
| 1271 | TranslationBlock *tb; |
| 1272 | |
| 1273 | if (nb_tbs <= 0) |
| 1274 | return NULL; |
| 1275 | if (tc_ptr < (unsigned long)code_gen_buffer || |
| 1276 | tc_ptr >= (unsigned long)code_gen_ptr) |
| 1277 | return NULL; |
| 1278 | /* binary search (cf Knuth) */ |
| 1279 | m_min = 0; |
| 1280 | m_max = nb_tbs - 1; |
| 1281 | while (m_min <= m_max) { |
| 1282 | m = (m_min + m_max) >> 1; |
| 1283 | tb = &tbs[m]; |
| 1284 | v = (unsigned long)tb->tc_ptr; |
| 1285 | if (v == tc_ptr) |
| 1286 | return tb; |
| 1287 | else if (tc_ptr < v) { |
| 1288 | m_max = m - 1; |
| 1289 | } else { |
| 1290 | m_min = m + 1; |
| 1291 | } |
| 1292 | } |
| 1293 | return &tbs[m_max]; |
| 1294 | } |
| 1295 | |
| 1296 | static void tb_reset_jump_recursive(TranslationBlock *tb); |
| 1297 | |
| 1298 | static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n) |
| 1299 | { |
| 1300 | TranslationBlock *tb1, *tb_next, **ptb; |
| 1301 | unsigned int n1; |
| 1302 | |
| 1303 | tb1 = tb->jmp_next[n]; |
| 1304 | if (tb1 != NULL) { |
| 1305 | /* find head of list */ |
| 1306 | for(;;) { |
| 1307 | n1 = (long)tb1 & 3; |
| 1308 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 1309 | if (n1 == 2) |
| 1310 | break; |
| 1311 | tb1 = tb1->jmp_next[n1]; |
| 1312 | } |
| 1313 | /* we are now sure now that tb jumps to tb1 */ |
| 1314 | tb_next = tb1; |
| 1315 | |
| 1316 | /* remove tb from the jmp_first list */ |
| 1317 | ptb = &tb_next->jmp_first; |
| 1318 | for(;;) { |
| 1319 | tb1 = *ptb; |
| 1320 | n1 = (long)tb1 & 3; |
| 1321 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 1322 | if (n1 == n && tb1 == tb) |
| 1323 | break; |
| 1324 | ptb = &tb1->jmp_next[n1]; |
| 1325 | } |
| 1326 | *ptb = tb->jmp_next[n]; |
| 1327 | tb->jmp_next[n] = NULL; |
| 1328 | |
| 1329 | /* suppress the jump to next tb in generated code */ |
| 1330 | tb_reset_jump(tb, n); |
| 1331 | |
| 1332 | /* suppress jumps in the tb on which we could have jumped */ |
| 1333 | tb_reset_jump_recursive(tb_next); |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | static void tb_reset_jump_recursive(TranslationBlock *tb) |
| 1338 | { |
| 1339 | tb_reset_jump_recursive2(tb, 0); |
| 1340 | tb_reset_jump_recursive2(tb, 1); |
| 1341 | } |
| 1342 | |
| 1343 | #if defined(TARGET_HAS_ICE) |
| 1344 | static void breakpoint_invalidate(CPUState *env, target_ulong pc) |
| 1345 | { |
| 1346 | target_phys_addr_t addr; |
| 1347 | target_ulong pd; |
| 1348 | ram_addr_t ram_addr; |
| 1349 | PhysPageDesc *p; |
| 1350 | |
| 1351 | addr = cpu_get_phys_page_debug(env, pc); |
| 1352 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 1353 | if (!p) { |
| 1354 | pd = IO_MEM_UNASSIGNED; |
| 1355 | } else { |
| 1356 | pd = p->phys_offset; |
| 1357 | } |
| 1358 | ram_addr = (pd & TARGET_PAGE_MASK) | (pc & ~TARGET_PAGE_MASK); |
| 1359 | tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0); |
| 1360 | } |
| 1361 | #endif |
| 1362 | |
| 1363 | /* Add a watchpoint. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1364 | int cpu_watchpoint_insert(CPUState *env, target_ulong addr, target_ulong len, |
| 1365 | int flags, CPUWatchpoint **watchpoint) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1366 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1367 | target_ulong len_mask = ~(len - 1); |
| 1368 | CPUWatchpoint *wp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1369 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1370 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
| 1371 | if ((len != 1 && len != 2 && len != 4 && len != 8) || (addr & ~len_mask)) { |
| 1372 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " |
| 1373 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); |
| 1374 | return -EINVAL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1375 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1376 | wp = qemu_malloc(sizeof(*wp)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1377 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1378 | wp->vaddr = addr; |
| 1379 | wp->len_mask = len_mask; |
| 1380 | wp->flags = flags; |
| 1381 | |
| 1382 | /* keep all GDB-injected watchpoints in front */ |
| 1383 | if (flags & BP_GDB) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1384 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1385 | else |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1386 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1387 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1388 | tlb_flush_page(env, addr); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1389 | |
| 1390 | if (watchpoint) |
| 1391 | *watchpoint = wp; |
| 1392 | return 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1393 | } |
| 1394 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1395 | /* Remove a specific watchpoint. */ |
| 1396 | int cpu_watchpoint_remove(CPUState *env, target_ulong addr, target_ulong len, |
| 1397 | int flags) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1398 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1399 | target_ulong len_mask = ~(len - 1); |
| 1400 | CPUWatchpoint *wp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1401 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1402 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1403 | if (addr == wp->vaddr && len_mask == wp->len_mask |
| 1404 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
| 1405 | cpu_watchpoint_remove_by_ref(env, wp); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1406 | return 0; |
| 1407 | } |
| 1408 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1409 | return -ENOENT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1410 | } |
| 1411 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1412 | /* Remove a specific watchpoint by reference. */ |
| 1413 | void cpu_watchpoint_remove_by_ref(CPUState *env, CPUWatchpoint *watchpoint) |
| 1414 | { |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1415 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1416 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1417 | tlb_flush_page(env, watchpoint->vaddr); |
| 1418 | |
| 1419 | qemu_free(watchpoint); |
| 1420 | } |
| 1421 | |
| 1422 | /* Remove all matching watchpoints. */ |
| 1423 | void cpu_watchpoint_remove_all(CPUState *env, int mask) |
| 1424 | { |
| 1425 | CPUWatchpoint *wp, *next; |
| 1426 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1427 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1428 | if (wp->flags & mask) |
| 1429 | cpu_watchpoint_remove_by_ref(env, wp); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1430 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1431 | } |
| 1432 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1433 | /* Add a breakpoint. */ |
| 1434 | int cpu_breakpoint_insert(CPUState *env, target_ulong pc, int flags, |
| 1435 | CPUBreakpoint **breakpoint) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1436 | { |
| 1437 | #if defined(TARGET_HAS_ICE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1438 | CPUBreakpoint *bp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1439 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1440 | bp = qemu_malloc(sizeof(*bp)); |
| 1441 | |
| 1442 | bp->pc = pc; |
| 1443 | bp->flags = flags; |
| 1444 | |
| 1445 | /* keep all GDB-injected breakpoints in front */ |
| 1446 | if (flags & BP_GDB) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1447 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1448 | else |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1449 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1450 | |
| 1451 | breakpoint_invalidate(env, pc); |
| 1452 | |
| 1453 | if (breakpoint) |
| 1454 | *breakpoint = bp; |
| 1455 | return 0; |
| 1456 | #else |
| 1457 | return -ENOSYS; |
| 1458 | #endif |
| 1459 | } |
| 1460 | |
| 1461 | /* Remove a specific breakpoint. */ |
| 1462 | int cpu_breakpoint_remove(CPUState *env, target_ulong pc, int flags) |
| 1463 | { |
| 1464 | #if defined(TARGET_HAS_ICE) |
| 1465 | CPUBreakpoint *bp; |
| 1466 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1467 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1468 | if (bp->pc == pc && bp->flags == flags) { |
| 1469 | cpu_breakpoint_remove_by_ref(env, bp); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1470 | return 0; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1471 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1472 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1473 | return -ENOENT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1474 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1475 | return -ENOSYS; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1476 | #endif |
| 1477 | } |
| 1478 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1479 | /* Remove a specific breakpoint by reference. */ |
| 1480 | void cpu_breakpoint_remove_by_ref(CPUState *env, CPUBreakpoint *breakpoint) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1481 | { |
| 1482 | #if defined(TARGET_HAS_ICE) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1483 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1484 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1485 | breakpoint_invalidate(env, breakpoint->pc); |
| 1486 | |
| 1487 | qemu_free(breakpoint); |
| 1488 | #endif |
| 1489 | } |
| 1490 | |
| 1491 | /* Remove all matching breakpoints. */ |
| 1492 | void cpu_breakpoint_remove_all(CPUState *env, int mask) |
| 1493 | { |
| 1494 | #if defined(TARGET_HAS_ICE) |
| 1495 | CPUBreakpoint *bp, *next; |
| 1496 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1497 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1498 | if (bp->flags & mask) |
| 1499 | cpu_breakpoint_remove_by_ref(env, bp); |
| 1500 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1501 | #endif |
| 1502 | } |
| 1503 | |
| 1504 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
| 1505 | CPU loop after each instruction */ |
| 1506 | void cpu_single_step(CPUState *env, int enabled) |
| 1507 | { |
| 1508 | #if defined(TARGET_HAS_ICE) |
| 1509 | if (env->singlestep_enabled != enabled) { |
| 1510 | env->singlestep_enabled = enabled; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1511 | if (kvm_enabled()) |
| 1512 | kvm_update_guest_debug(env, 0); |
| 1513 | else { |
| 1514 | /* must flush all the translated code to avoid inconsistencies */ |
| 1515 | /* XXX: only flush what is necessary */ |
| 1516 | tb_flush(env); |
| 1517 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1518 | } |
| 1519 | #endif |
| 1520 | } |
| 1521 | |
| 1522 | /* enable or disable low levels log */ |
| 1523 | void cpu_set_log(int log_flags) |
| 1524 | { |
| 1525 | loglevel = log_flags; |
| 1526 | if (loglevel && !logfile) { |
| 1527 | logfile = fopen(logfilename, log_append ? "a" : "w"); |
| 1528 | if (!logfile) { |
| 1529 | perror(logfilename); |
Iliyan Malchev | 4a2c9dd | 2012-04-02 08:20:56 -0700 | [diff] [blame] | 1530 | exit(1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1531 | } |
| 1532 | #if !defined(CONFIG_SOFTMMU) |
| 1533 | /* must avoid mmap() usage of glibc by setting a buffer "by hand" */ |
| 1534 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1535 | static char logfile_buf[4096]; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1536 | setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf)); |
| 1537 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1538 | #elif !defined(_WIN32) |
| 1539 | /* Win32 doesn't support line-buffering and requires size >= 2 */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1540 | setvbuf(logfile, NULL, _IOLBF, 0); |
| 1541 | #endif |
| 1542 | log_append = 1; |
| 1543 | } |
| 1544 | if (!loglevel && logfile) { |
| 1545 | fclose(logfile); |
| 1546 | logfile = NULL; |
| 1547 | } |
| 1548 | } |
| 1549 | |
| 1550 | void cpu_set_log_filename(const char *filename) |
| 1551 | { |
| 1552 | logfilename = strdup(filename); |
| 1553 | if (logfile) { |
| 1554 | fclose(logfile); |
| 1555 | logfile = NULL; |
| 1556 | } |
| 1557 | cpu_set_log(loglevel); |
| 1558 | } |
| 1559 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1560 | static void cpu_unlink_tb(CPUState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1561 | { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1562 | /* FIXME: TB unchaining isn't SMP safe. For now just ignore the |
| 1563 | problem and hope the cpu will stop of its own accord. For userspace |
| 1564 | emulation this often isn't actually as bad as it sounds. Often |
| 1565 | signals are used primarily to interrupt blocking syscalls. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1566 | TranslationBlock *tb; |
| 1567 | static spinlock_t interrupt_lock = SPIN_LOCK_UNLOCKED; |
| 1568 | |
David 'Digit' Turner | 795bb19 | 2011-05-09 15:20:22 +0200 | [diff] [blame] | 1569 | spin_lock(&interrupt_lock); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1570 | tb = env->current_tb; |
| 1571 | /* if the cpu is currently executing code, we must unlink it and |
| 1572 | all the potentially executing TB */ |
David 'Digit' Turner | 795bb19 | 2011-05-09 15:20:22 +0200 | [diff] [blame] | 1573 | if (tb) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1574 | env->current_tb = NULL; |
| 1575 | tb_reset_jump_recursive(tb); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1576 | } |
David 'Digit' Turner | 795bb19 | 2011-05-09 15:20:22 +0200 | [diff] [blame] | 1577 | spin_unlock(&interrupt_lock); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1578 | } |
| 1579 | |
| 1580 | /* mask must never be zero, except for A20 change call */ |
| 1581 | void cpu_interrupt(CPUState *env, int mask) |
| 1582 | { |
| 1583 | int old_mask; |
| 1584 | |
| 1585 | old_mask = env->interrupt_request; |
| 1586 | env->interrupt_request |= mask; |
| 1587 | |
| 1588 | #ifndef CONFIG_USER_ONLY |
| 1589 | /* |
| 1590 | * If called from iothread context, wake the target cpu in |
| 1591 | * case its halted. |
| 1592 | */ |
| 1593 | if (!qemu_cpu_self(env)) { |
| 1594 | qemu_cpu_kick(env); |
| 1595 | return; |
| 1596 | } |
| 1597 | #endif |
| 1598 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1599 | if (use_icount) { |
| 1600 | env->icount_decr.u16.high = 0xffff; |
| 1601 | #ifndef CONFIG_USER_ONLY |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1602 | if (!can_do_io(env) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1603 | && (mask & ~old_mask) != 0) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1604 | cpu_abort(env, "Raised interrupt while not in I/O function"); |
| 1605 | } |
| 1606 | #endif |
| 1607 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1608 | cpu_unlink_tb(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1609 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1610 | } |
| 1611 | |
| 1612 | void cpu_reset_interrupt(CPUState *env, int mask) |
| 1613 | { |
| 1614 | env->interrupt_request &= ~mask; |
| 1615 | } |
| 1616 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1617 | void cpu_exit(CPUState *env) |
| 1618 | { |
| 1619 | env->exit_request = 1; |
| 1620 | cpu_unlink_tb(env); |
| 1621 | } |
| 1622 | |
| 1623 | const CPULogItem cpu_log_items[] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1624 | { CPU_LOG_TB_OUT_ASM, "out_asm", |
| 1625 | "show generated host assembly code for each compiled TB" }, |
| 1626 | { CPU_LOG_TB_IN_ASM, "in_asm", |
| 1627 | "show target assembly code for each compiled TB" }, |
| 1628 | { CPU_LOG_TB_OP, "op", |
| 1629 | "show micro ops for each compiled TB" }, |
| 1630 | { CPU_LOG_TB_OP_OPT, "op_opt", |
| 1631 | "show micro ops " |
| 1632 | #ifdef TARGET_I386 |
| 1633 | "before eflags optimization and " |
| 1634 | #endif |
| 1635 | "after liveness analysis" }, |
| 1636 | { CPU_LOG_INT, "int", |
| 1637 | "show interrupts/exceptions in short format" }, |
| 1638 | { CPU_LOG_EXEC, "exec", |
| 1639 | "show trace before each executed TB (lots of logs)" }, |
| 1640 | { CPU_LOG_TB_CPU, "cpu", |
| 1641 | "show CPU state before block translation" }, |
| 1642 | #ifdef TARGET_I386 |
| 1643 | { CPU_LOG_PCALL, "pcall", |
| 1644 | "show protected mode far calls/returns/exceptions" }, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1645 | { CPU_LOG_RESET, "cpu_reset", |
| 1646 | "show CPU state before CPU resets" }, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1647 | #endif |
| 1648 | #ifdef DEBUG_IOPORT |
| 1649 | { CPU_LOG_IOPORT, "ioport", |
| 1650 | "show all i/o ports accesses" }, |
| 1651 | #endif |
| 1652 | { 0, NULL, NULL }, |
| 1653 | }; |
| 1654 | |
| 1655 | static int cmp1(const char *s1, int n, const char *s2) |
| 1656 | { |
| 1657 | if (strlen(s2) != n) |
| 1658 | return 0; |
| 1659 | return memcmp(s1, s2, n) == 0; |
| 1660 | } |
| 1661 | |
| 1662 | /* takes a comma separated list of log masks. Return 0 if error. */ |
| 1663 | int cpu_str_to_log_mask(const char *str) |
| 1664 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1665 | const CPULogItem *item; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1666 | int mask; |
| 1667 | const char *p, *p1; |
| 1668 | |
| 1669 | p = str; |
| 1670 | mask = 0; |
| 1671 | for(;;) { |
| 1672 | p1 = strchr(p, ','); |
| 1673 | if (!p1) |
| 1674 | p1 = p + strlen(p); |
| 1675 | if(cmp1(p,p1-p,"all")) { |
| 1676 | for(item = cpu_log_items; item->mask != 0; item++) { |
| 1677 | mask |= item->mask; |
| 1678 | } |
| 1679 | } else { |
| 1680 | for(item = cpu_log_items; item->mask != 0; item++) { |
| 1681 | if (cmp1(p, p1 - p, item->name)) |
| 1682 | goto found; |
| 1683 | } |
| 1684 | return 0; |
| 1685 | } |
| 1686 | found: |
| 1687 | mask |= item->mask; |
| 1688 | if (*p1 != ',') |
| 1689 | break; |
| 1690 | p = p1 + 1; |
| 1691 | } |
| 1692 | return mask; |
| 1693 | } |
| 1694 | |
| 1695 | void cpu_abort(CPUState *env, const char *fmt, ...) |
| 1696 | { |
| 1697 | va_list ap; |
| 1698 | va_list ap2; |
| 1699 | |
| 1700 | va_start(ap, fmt); |
| 1701 | va_copy(ap2, ap); |
| 1702 | fprintf(stderr, "qemu: fatal: "); |
| 1703 | vfprintf(stderr, fmt, ap); |
| 1704 | fprintf(stderr, "\n"); |
| 1705 | #ifdef TARGET_I386 |
| 1706 | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP); |
| 1707 | #else |
| 1708 | cpu_dump_state(env, stderr, fprintf, 0); |
| 1709 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1710 | if (qemu_log_enabled()) { |
| 1711 | qemu_log("qemu: fatal: "); |
| 1712 | qemu_log_vprintf(fmt, ap2); |
| 1713 | qemu_log("\n"); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1714 | #ifdef TARGET_I386 |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1715 | log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1716 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1717 | log_cpu_state(env, 0); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1718 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1719 | qemu_log_flush(); |
| 1720 | qemu_log_close(); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1721 | } |
| 1722 | va_end(ap2); |
| 1723 | va_end(ap); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 1724 | #if defined(CONFIG_USER_ONLY) |
| 1725 | { |
| 1726 | struct sigaction act; |
| 1727 | sigfillset(&act.sa_mask); |
| 1728 | act.sa_handler = SIG_DFL; |
| 1729 | sigaction(SIGABRT, &act, NULL); |
| 1730 | } |
| 1731 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1732 | abort(); |
| 1733 | } |
| 1734 | |
| 1735 | CPUState *cpu_copy(CPUState *env) |
| 1736 | { |
| 1737 | CPUState *new_env = cpu_init(env->cpu_model_str); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1738 | CPUState *next_cpu = new_env->next_cpu; |
| 1739 | int cpu_index = new_env->cpu_index; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1740 | #if defined(TARGET_HAS_ICE) |
| 1741 | CPUBreakpoint *bp; |
| 1742 | CPUWatchpoint *wp; |
| 1743 | #endif |
| 1744 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1745 | memcpy(new_env, env, sizeof(CPUState)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1746 | |
| 1747 | /* Preserve chaining and index. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1748 | new_env->next_cpu = next_cpu; |
| 1749 | new_env->cpu_index = cpu_index; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1750 | |
| 1751 | /* Clone all break/watchpoints. |
| 1752 | Note: Once we support ptrace with hw-debug register access, make sure |
| 1753 | BP_CPU break/watchpoints are handled correctly on clone. */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1754 | QTAILQ_INIT(&env->breakpoints); |
| 1755 | QTAILQ_INIT(&env->watchpoints); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1756 | #if defined(TARGET_HAS_ICE) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1757 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1758 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
| 1759 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1760 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1761 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
| 1762 | wp->flags, NULL); |
| 1763 | } |
| 1764 | #endif |
| 1765 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1766 | return new_env; |
| 1767 | } |
| 1768 | |
| 1769 | #if !defined(CONFIG_USER_ONLY) |
| 1770 | |
| 1771 | static inline void tlb_flush_jmp_cache(CPUState *env, target_ulong addr) |
| 1772 | { |
| 1773 | unsigned int i; |
| 1774 | |
| 1775 | /* Discard jump cache entries for any tb which might potentially |
| 1776 | overlap the flushed page. */ |
| 1777 | i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE); |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 1778 | memset (&env->tb_jmp_cache[i], 0, |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 1779 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1780 | |
| 1781 | i = tb_jmp_cache_hash_page(addr); |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 1782 | memset (&env->tb_jmp_cache[i], 0, |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 1783 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1784 | } |
| 1785 | |
| 1786 | /* NOTE: if flush_global is true, also flush global entries (not |
| 1787 | implemented yet) */ |
| 1788 | void tlb_flush(CPUState *env, int flush_global) |
| 1789 | { |
| 1790 | int i; |
| 1791 | |
| 1792 | #if defined(DEBUG_TLB) |
| 1793 | printf("tlb_flush:\n"); |
| 1794 | #endif |
| 1795 | /* must reset current TB so that interrupts cannot modify the |
| 1796 | links while we are modifying them */ |
| 1797 | env->current_tb = NULL; |
| 1798 | |
| 1799 | for(i = 0; i < CPU_TLB_SIZE; i++) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1800 | int mmu_idx; |
| 1801 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { |
| 1802 | env->tlb_table[mmu_idx][i].addr_read = -1; |
| 1803 | env->tlb_table[mmu_idx][i].addr_write = -1; |
| 1804 | env->tlb_table[mmu_idx][i].addr_code = -1; |
| 1805 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1806 | } |
| 1807 | |
| 1808 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); |
| 1809 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1810 | #ifdef CONFIG_KQEMU |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1811 | if (env->kqemu_enabled) { |
| 1812 | kqemu_flush(env, flush_global); |
| 1813 | } |
| 1814 | #endif |
| 1815 | tlb_flush_count++; |
| 1816 | } |
| 1817 | |
| 1818 | static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr) |
| 1819 | { |
| 1820 | if (addr == (tlb_entry->addr_read & |
| 1821 | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) || |
| 1822 | addr == (tlb_entry->addr_write & |
| 1823 | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) || |
| 1824 | addr == (tlb_entry->addr_code & |
| 1825 | (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { |
| 1826 | tlb_entry->addr_read = -1; |
| 1827 | tlb_entry->addr_write = -1; |
| 1828 | tlb_entry->addr_code = -1; |
| 1829 | } |
| 1830 | } |
| 1831 | |
| 1832 | void tlb_flush_page(CPUState *env, target_ulong addr) |
| 1833 | { |
| 1834 | int i; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1835 | int mmu_idx; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1836 | |
| 1837 | #if defined(DEBUG_TLB) |
| 1838 | printf("tlb_flush_page: " TARGET_FMT_lx "\n", addr); |
| 1839 | #endif |
| 1840 | /* must reset current TB so that interrupts cannot modify the |
| 1841 | links while we are modifying them */ |
| 1842 | env->current_tb = NULL; |
| 1843 | |
| 1844 | addr &= TARGET_PAGE_MASK; |
| 1845 | i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1846 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) |
| 1847 | tlb_flush_entry(&env->tlb_table[mmu_idx][i], addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1848 | |
| 1849 | tlb_flush_jmp_cache(env, addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1850 | } |
| 1851 | |
| 1852 | /* update the TLBs so that writes to code in the virtual page 'addr' |
| 1853 | can be detected */ |
| 1854 | static void tlb_protect_code(ram_addr_t ram_addr) |
| 1855 | { |
| 1856 | cpu_physical_memory_reset_dirty(ram_addr, |
| 1857 | ram_addr + TARGET_PAGE_SIZE, |
| 1858 | CODE_DIRTY_FLAG); |
| 1859 | } |
| 1860 | |
| 1861 | /* update the TLB so that writes in physical page 'phys_addr' are no longer |
| 1862 | tested for self modifying code */ |
| 1863 | static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr, |
| 1864 | target_ulong vaddr) |
| 1865 | { |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 1866 | cpu_physical_memory_set_dirty_flags(ram_addr, CODE_DIRTY_FLAG); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1867 | } |
| 1868 | |
| 1869 | static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry, |
| 1870 | unsigned long start, unsigned long length) |
| 1871 | { |
| 1872 | unsigned long addr; |
| 1873 | if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { |
| 1874 | addr = (tlb_entry->addr_write & TARGET_PAGE_MASK) + tlb_entry->addend; |
| 1875 | if ((addr - start) < length) { |
| 1876 | tlb_entry->addr_write = (tlb_entry->addr_write & TARGET_PAGE_MASK) | TLB_NOTDIRTY; |
| 1877 | } |
| 1878 | } |
| 1879 | } |
| 1880 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1881 | /* Note: start and end must be within the same ram block. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1882 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
| 1883 | int dirty_flags) |
| 1884 | { |
| 1885 | CPUState *env; |
| 1886 | unsigned long length, start1; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 1887 | int i; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1888 | |
| 1889 | start &= TARGET_PAGE_MASK; |
| 1890 | end = TARGET_PAGE_ALIGN(end); |
| 1891 | |
| 1892 | length = end - start; |
| 1893 | if (length == 0) |
| 1894 | return; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 1895 | cpu_physical_memory_mask_dirty_range(start, length, dirty_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1896 | |
| 1897 | /* we modify the TLB cache so that the dirty bit will be set again |
| 1898 | when accessing the range */ |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 1899 | start1 = (unsigned long)qemu_safe_ram_ptr(start); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1900 | /* Chek that we don't span multiple blocks - this breaks the |
| 1901 | address comparisons below. */ |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 1902 | if ((unsigned long)qemu_safe_ram_ptr(end - 1) - start1 |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1903 | != (end - 1) - start) { |
| 1904 | abort(); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1905 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1906 | |
| 1907 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1908 | int mmu_idx; |
| 1909 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { |
| 1910 | for(i = 0; i < CPU_TLB_SIZE; i++) |
| 1911 | tlb_reset_dirty_range(&env->tlb_table[mmu_idx][i], |
| 1912 | start1, length); |
| 1913 | } |
| 1914 | } |
| 1915 | } |
| 1916 | |
| 1917 | int cpu_physical_memory_set_dirty_tracking(int enable) |
| 1918 | { |
| 1919 | in_migration = enable; |
| 1920 | if (kvm_enabled()) { |
| 1921 | return kvm_set_migration_log(enable); |
| 1922 | } |
| 1923 | return 0; |
| 1924 | } |
| 1925 | |
| 1926 | int cpu_physical_memory_get_dirty_tracking(void) |
| 1927 | { |
| 1928 | return in_migration; |
| 1929 | } |
| 1930 | |
| 1931 | int cpu_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, |
| 1932 | target_phys_addr_t end_addr) |
| 1933 | { |
| 1934 | int ret = 0; |
| 1935 | |
| 1936 | if (kvm_enabled()) |
| 1937 | ret = kvm_physical_sync_dirty_bitmap(start_addr, end_addr); |
| 1938 | return ret; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1939 | } |
| 1940 | |
| 1941 | static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry) |
| 1942 | { |
| 1943 | ram_addr_t ram_addr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1944 | void *p; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1945 | |
| 1946 | if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1947 | p = (void *)(unsigned long)((tlb_entry->addr_write & TARGET_PAGE_MASK) |
| 1948 | + tlb_entry->addend); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 1949 | ram_addr = qemu_ram_addr_from_host_nofail(p); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1950 | if (!cpu_physical_memory_is_dirty(ram_addr)) { |
| 1951 | tlb_entry->addr_write |= TLB_NOTDIRTY; |
| 1952 | } |
| 1953 | } |
| 1954 | } |
| 1955 | |
| 1956 | /* update the TLB according to the current state of the dirty bits */ |
| 1957 | void cpu_tlb_update_dirty(CPUState *env) |
| 1958 | { |
| 1959 | int i; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1960 | int mmu_idx; |
| 1961 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { |
| 1962 | for(i = 0; i < CPU_TLB_SIZE; i++) |
| 1963 | tlb_update_dirty(&env->tlb_table[mmu_idx][i]); |
| 1964 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1965 | } |
| 1966 | |
| 1967 | static inline void tlb_set_dirty1(CPUTLBEntry *tlb_entry, target_ulong vaddr) |
| 1968 | { |
| 1969 | if (tlb_entry->addr_write == (vaddr | TLB_NOTDIRTY)) |
| 1970 | tlb_entry->addr_write = vaddr; |
| 1971 | } |
| 1972 | |
| 1973 | /* update the TLB corresponding to virtual page vaddr |
| 1974 | so that it is no longer dirty */ |
| 1975 | static inline void tlb_set_dirty(CPUState *env, target_ulong vaddr) |
| 1976 | { |
| 1977 | int i; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1978 | int mmu_idx; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1979 | |
| 1980 | vaddr &= TARGET_PAGE_MASK; |
| 1981 | i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1982 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) |
| 1983 | tlb_set_dirty1(&env->tlb_table[mmu_idx][i], vaddr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1984 | } |
| 1985 | |
| 1986 | /* add a new TLB entry. At most one entry for a given virtual address |
| 1987 | is permitted. Return 0 if OK or 2 if the page could not be mapped |
| 1988 | (can only happen in non SOFTMMU mode for I/O pages or pages |
| 1989 | conflicting with the host address space). */ |
| 1990 | int tlb_set_page_exec(CPUState *env, target_ulong vaddr, |
| 1991 | target_phys_addr_t paddr, int prot, |
| 1992 | int mmu_idx, int is_softmmu) |
| 1993 | { |
| 1994 | PhysPageDesc *p; |
| 1995 | unsigned long pd; |
| 1996 | unsigned int index; |
| 1997 | target_ulong address; |
| 1998 | target_ulong code_address; |
David 'Digit' Turner | d9b6cb9 | 2010-10-20 19:07:28 +0200 | [diff] [blame] | 1999 | ptrdiff_t addend; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2000 | int ret; |
| 2001 | CPUTLBEntry *te; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2002 | CPUWatchpoint *wp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2003 | target_phys_addr_t iotlb; |
| 2004 | |
| 2005 | p = phys_page_find(paddr >> TARGET_PAGE_BITS); |
| 2006 | if (!p) { |
| 2007 | pd = IO_MEM_UNASSIGNED; |
| 2008 | } else { |
| 2009 | pd = p->phys_offset; |
| 2010 | } |
| 2011 | #if defined(DEBUG_TLB) |
| 2012 | printf("tlb_set_page: vaddr=" TARGET_FMT_lx " paddr=0x%08x prot=%x idx=%d smmu=%d pd=0x%08lx\n", |
| 2013 | vaddr, (int)paddr, prot, mmu_idx, is_softmmu, pd); |
| 2014 | #endif |
| 2015 | |
| 2016 | ret = 0; |
| 2017 | address = vaddr; |
| 2018 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) { |
| 2019 | /* IO memory case (romd handled later) */ |
| 2020 | address |= TLB_MMIO; |
| 2021 | } |
David 'Digit' Turner | d9b6cb9 | 2010-10-20 19:07:28 +0200 | [diff] [blame] | 2022 | addend = (ptrdiff_t)qemu_get_ram_ptr(pd & TARGET_PAGE_MASK); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2023 | if ((pd & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) { |
| 2024 | /* Normal RAM. */ |
| 2025 | iotlb = pd & TARGET_PAGE_MASK; |
| 2026 | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM) |
| 2027 | iotlb |= IO_MEM_NOTDIRTY; |
| 2028 | else |
| 2029 | iotlb |= IO_MEM_ROM; |
| 2030 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2031 | /* IO handlers are currently passed a physical address. |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2032 | It would be nice to pass an offset from the base address |
| 2033 | of that region. This would avoid having to special case RAM, |
| 2034 | and avoid full address decoding in every device. |
| 2035 | We can't use the high bits of pd for this because |
| 2036 | IO_MEM_ROMD uses these as a ram address. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2037 | iotlb = (pd & ~TARGET_PAGE_MASK); |
| 2038 | if (p) { |
| 2039 | iotlb += p->region_offset; |
| 2040 | } else { |
| 2041 | iotlb += paddr; |
| 2042 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2043 | } |
| 2044 | |
| 2045 | code_address = address; |
| 2046 | /* Make accesses to pages with watchpoints go via the |
| 2047 | watchpoint trap routines. */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2048 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2049 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2050 | iotlb = io_mem_watch + paddr; |
| 2051 | /* TODO: The memory case can be optimized by not trapping |
| 2052 | reads of pages with a write breakpoint. */ |
| 2053 | address |= TLB_MMIO; |
| 2054 | } |
| 2055 | } |
| 2056 | |
| 2057 | index = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
| 2058 | env->iotlb[mmu_idx][index] = iotlb - vaddr; |
| 2059 | te = &env->tlb_table[mmu_idx][index]; |
| 2060 | te->addend = addend - vaddr; |
| 2061 | if (prot & PAGE_READ) { |
| 2062 | te->addr_read = address; |
| 2063 | } else { |
| 2064 | te->addr_read = -1; |
| 2065 | } |
| 2066 | |
| 2067 | if (prot & PAGE_EXEC) { |
| 2068 | te->addr_code = code_address; |
| 2069 | } else { |
| 2070 | te->addr_code = -1; |
| 2071 | } |
| 2072 | if (prot & PAGE_WRITE) { |
| 2073 | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM || |
| 2074 | (pd & IO_MEM_ROMD)) { |
| 2075 | /* Write access calls the I/O callback. */ |
| 2076 | te->addr_write = address | TLB_MMIO; |
| 2077 | } else if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && |
| 2078 | !cpu_physical_memory_is_dirty(pd)) { |
| 2079 | te->addr_write = address | TLB_NOTDIRTY; |
| 2080 | } else { |
| 2081 | te->addr_write = address; |
| 2082 | } |
| 2083 | } else { |
| 2084 | te->addr_write = -1; |
| 2085 | } |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 2086 | |
| 2087 | #ifdef CONFIG_MEMCHECK |
| 2088 | /* |
| 2089 | * If we have memchecker running, we need to make sure that page, cached |
| 2090 | * into TLB as the result of this operation will comply with our requirement |
| 2091 | * to cause __ld/__stx_mmu being called for memory access on the pages |
| 2092 | * containing memory blocks that require access violation checks. |
| 2093 | * |
| 2094 | * We need to check with memory checker if we should invalidate this page |
| 2095 | * iff: |
| 2096 | * - Memchecking is enabled. |
| 2097 | * - Page that's been cached belongs to the user space. |
| 2098 | * - Request to cache this page didn't come from softmmu. We're covered |
| 2099 | * there, because after page was cached here we will invalidate it in |
| 2100 | * the __ld/__stx_mmu wrapper. |
| 2101 | * - Cached page belongs to RAM, not I/O area. |
| 2102 | * - Page is cached for read, or write access. |
| 2103 | */ |
| 2104 | if (memcheck_instrument_mmu && mmu_idx == 1 && !is_softmmu && |
| 2105 | (pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && |
| 2106 | (prot & (PAGE_READ | PAGE_WRITE)) && |
| 2107 | memcheck_is_checked(vaddr & TARGET_PAGE_MASK, TARGET_PAGE_SIZE)) { |
| 2108 | if (prot & PAGE_READ) { |
| 2109 | te->addr_read ^= TARGET_PAGE_MASK; |
| 2110 | } |
| 2111 | if (prot & PAGE_WRITE) { |
| 2112 | te->addr_write ^= TARGET_PAGE_MASK; |
| 2113 | } |
| 2114 | } |
| 2115 | #endif // CONFIG_MEMCHECK |
| 2116 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2117 | return ret; |
| 2118 | } |
| 2119 | |
| 2120 | #else |
| 2121 | |
| 2122 | void tlb_flush(CPUState *env, int flush_global) |
| 2123 | { |
| 2124 | } |
| 2125 | |
| 2126 | void tlb_flush_page(CPUState *env, target_ulong addr) |
| 2127 | { |
| 2128 | } |
| 2129 | |
| 2130 | int tlb_set_page_exec(CPUState *env, target_ulong vaddr, |
| 2131 | target_phys_addr_t paddr, int prot, |
| 2132 | int mmu_idx, int is_softmmu) |
| 2133 | { |
| 2134 | return 0; |
| 2135 | } |
| 2136 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2137 | /* |
| 2138 | * Walks guest process memory "regions" one by one |
| 2139 | * and calls callback function 'fn' for each region. |
| 2140 | */ |
| 2141 | int walk_memory_regions(void *priv, |
| 2142 | int (*fn)(void *, unsigned long, unsigned long, unsigned long)) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2143 | { |
| 2144 | unsigned long start, end; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2145 | PageDesc *p = NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2146 | int i, j, prot, prot1; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2147 | int rc = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2148 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2149 | start = end = -1; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2150 | prot = 0; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2151 | |
| 2152 | for (i = 0; i <= L1_SIZE; i++) { |
| 2153 | p = (i < L1_SIZE) ? l1_map[i] : NULL; |
| 2154 | for (j = 0; j < L2_SIZE; j++) { |
| 2155 | prot1 = (p == NULL) ? 0 : p[j].flags; |
| 2156 | /* |
| 2157 | * "region" is one continuous chunk of memory |
| 2158 | * that has same protection flags set. |
| 2159 | */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2160 | if (prot1 != prot) { |
| 2161 | end = (i << (32 - L1_BITS)) | (j << TARGET_PAGE_BITS); |
| 2162 | if (start != -1) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2163 | rc = (*fn)(priv, start, end, prot); |
| 2164 | /* callback can stop iteration by returning != 0 */ |
| 2165 | if (rc != 0) |
| 2166 | return (rc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2167 | } |
| 2168 | if (prot1 != 0) |
| 2169 | start = end; |
| 2170 | else |
| 2171 | start = -1; |
| 2172 | prot = prot1; |
| 2173 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2174 | if (p == NULL) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2175 | break; |
| 2176 | } |
| 2177 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2178 | return (rc); |
| 2179 | } |
| 2180 | |
| 2181 | static int dump_region(void *priv, unsigned long start, |
| 2182 | unsigned long end, unsigned long prot) |
| 2183 | { |
| 2184 | FILE *f = (FILE *)priv; |
| 2185 | |
| 2186 | (void) fprintf(f, "%08lx-%08lx %08lx %c%c%c\n", |
| 2187 | start, end, end - start, |
| 2188 | ((prot & PAGE_READ) ? 'r' : '-'), |
| 2189 | ((prot & PAGE_WRITE) ? 'w' : '-'), |
| 2190 | ((prot & PAGE_EXEC) ? 'x' : '-')); |
| 2191 | |
| 2192 | return (0); |
| 2193 | } |
| 2194 | |
| 2195 | /* dump memory mappings */ |
| 2196 | void page_dump(FILE *f) |
| 2197 | { |
| 2198 | (void) fprintf(f, "%-8s %-8s %-8s %s\n", |
| 2199 | "start", "end", "size", "prot"); |
| 2200 | walk_memory_regions(f, dump_region); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2201 | } |
| 2202 | |
| 2203 | int page_get_flags(target_ulong address) |
| 2204 | { |
| 2205 | PageDesc *p; |
| 2206 | |
| 2207 | p = page_find(address >> TARGET_PAGE_BITS); |
| 2208 | if (!p) |
| 2209 | return 0; |
| 2210 | return p->flags; |
| 2211 | } |
| 2212 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2213 | /* Modify the flags of a page and invalidate the code if necessary. |
| 2214 | The flag PAGE_WRITE_ORG is positioned automatically depending |
| 2215 | on PAGE_WRITE. The mmap_lock should already be held. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2216 | void page_set_flags(target_ulong start, target_ulong end, int flags) |
| 2217 | { |
| 2218 | PageDesc *p; |
| 2219 | target_ulong addr; |
| 2220 | |
| 2221 | /* mmap_lock should already be held. */ |
| 2222 | start = start & TARGET_PAGE_MASK; |
| 2223 | end = TARGET_PAGE_ALIGN(end); |
| 2224 | if (flags & PAGE_WRITE) |
| 2225 | flags |= PAGE_WRITE_ORG; |
| 2226 | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) { |
| 2227 | p = page_find_alloc(addr >> TARGET_PAGE_BITS); |
| 2228 | /* We may be called for host regions that are outside guest |
| 2229 | address space. */ |
| 2230 | if (!p) |
| 2231 | return; |
| 2232 | /* if the write protection is set, then we invalidate the code |
| 2233 | inside */ |
| 2234 | if (!(p->flags & PAGE_WRITE) && |
| 2235 | (flags & PAGE_WRITE) && |
| 2236 | p->first_tb) { |
| 2237 | tb_invalidate_phys_page(addr, 0, NULL); |
| 2238 | } |
| 2239 | p->flags = flags; |
| 2240 | } |
| 2241 | } |
| 2242 | |
| 2243 | int page_check_range(target_ulong start, target_ulong len, int flags) |
| 2244 | { |
| 2245 | PageDesc *p; |
| 2246 | target_ulong end; |
| 2247 | target_ulong addr; |
| 2248 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2249 | if (start + len < start) |
| 2250 | /* we've wrapped around */ |
| 2251 | return -1; |
| 2252 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2253 | end = TARGET_PAGE_ALIGN(start+len); /* must do before we loose bits in the next step */ |
| 2254 | start = start & TARGET_PAGE_MASK; |
| 2255 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2256 | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) { |
| 2257 | p = page_find(addr >> TARGET_PAGE_BITS); |
| 2258 | if( !p ) |
| 2259 | return -1; |
| 2260 | if( !(p->flags & PAGE_VALID) ) |
| 2261 | return -1; |
| 2262 | |
| 2263 | if ((flags & PAGE_READ) && !(p->flags & PAGE_READ)) |
| 2264 | return -1; |
| 2265 | if (flags & PAGE_WRITE) { |
| 2266 | if (!(p->flags & PAGE_WRITE_ORG)) |
| 2267 | return -1; |
| 2268 | /* unprotect the page if it was put read-only because it |
| 2269 | contains translated code */ |
| 2270 | if (!(p->flags & PAGE_WRITE)) { |
| 2271 | if (!page_unprotect(addr, 0, NULL)) |
| 2272 | return -1; |
| 2273 | } |
| 2274 | return 0; |
| 2275 | } |
| 2276 | } |
| 2277 | return 0; |
| 2278 | } |
| 2279 | |
| 2280 | /* called from signal handler: invalidate the code and unprotect the |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2281 | page. Return TRUE if the fault was successfully handled. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2282 | int page_unprotect(target_ulong address, unsigned long pc, void *puc) |
| 2283 | { |
| 2284 | unsigned int page_index, prot, pindex; |
| 2285 | PageDesc *p, *p1; |
| 2286 | target_ulong host_start, host_end, addr; |
| 2287 | |
| 2288 | /* Technically this isn't safe inside a signal handler. However we |
| 2289 | know this only ever happens in a synchronous SEGV handler, so in |
| 2290 | practice it seems to be ok. */ |
| 2291 | mmap_lock(); |
| 2292 | |
| 2293 | host_start = address & qemu_host_page_mask; |
| 2294 | page_index = host_start >> TARGET_PAGE_BITS; |
| 2295 | p1 = page_find(page_index); |
| 2296 | if (!p1) { |
| 2297 | mmap_unlock(); |
| 2298 | return 0; |
| 2299 | } |
| 2300 | host_end = host_start + qemu_host_page_size; |
| 2301 | p = p1; |
| 2302 | prot = 0; |
| 2303 | for(addr = host_start;addr < host_end; addr += TARGET_PAGE_SIZE) { |
| 2304 | prot |= p->flags; |
| 2305 | p++; |
| 2306 | } |
| 2307 | /* if the page was really writable, then we change its |
| 2308 | protection back to writable */ |
| 2309 | if (prot & PAGE_WRITE_ORG) { |
| 2310 | pindex = (address - host_start) >> TARGET_PAGE_BITS; |
| 2311 | if (!(p1[pindex].flags & PAGE_WRITE)) { |
| 2312 | mprotect((void *)g2h(host_start), qemu_host_page_size, |
| 2313 | (prot & PAGE_BITS) | PAGE_WRITE); |
| 2314 | p1[pindex].flags |= PAGE_WRITE; |
| 2315 | /* and since the content will be modified, we must invalidate |
| 2316 | the corresponding translated code. */ |
| 2317 | tb_invalidate_phys_page(address, pc, puc); |
| 2318 | #ifdef DEBUG_TB_CHECK |
| 2319 | tb_invalidate_check(address); |
| 2320 | #endif |
| 2321 | mmap_unlock(); |
| 2322 | return 1; |
| 2323 | } |
| 2324 | } |
| 2325 | mmap_unlock(); |
| 2326 | return 0; |
| 2327 | } |
| 2328 | |
| 2329 | static inline void tlb_set_dirty(CPUState *env, |
| 2330 | unsigned long addr, target_ulong vaddr) |
| 2331 | { |
| 2332 | } |
| 2333 | #endif /* defined(CONFIG_USER_ONLY) */ |
| 2334 | |
| 2335 | #if !defined(CONFIG_USER_ONLY) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2336 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2337 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2338 | ram_addr_t memory, ram_addr_t region_offset); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2339 | static void *subpage_init (target_phys_addr_t base, ram_addr_t *phys, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2340 | ram_addr_t orig_memory, ram_addr_t region_offset); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2341 | #define CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2, \ |
| 2342 | need_subpage) \ |
| 2343 | do { \ |
| 2344 | if (addr > start_addr) \ |
| 2345 | start_addr2 = 0; \ |
| 2346 | else { \ |
| 2347 | start_addr2 = start_addr & ~TARGET_PAGE_MASK; \ |
| 2348 | if (start_addr2 > 0) \ |
| 2349 | need_subpage = 1; \ |
| 2350 | } \ |
| 2351 | \ |
| 2352 | if ((start_addr + orig_size) - addr >= TARGET_PAGE_SIZE) \ |
| 2353 | end_addr2 = TARGET_PAGE_SIZE - 1; \ |
| 2354 | else { \ |
| 2355 | end_addr2 = (start_addr + orig_size - 1) & ~TARGET_PAGE_MASK; \ |
| 2356 | if (end_addr2 < TARGET_PAGE_SIZE - 1) \ |
| 2357 | need_subpage = 1; \ |
| 2358 | } \ |
| 2359 | } while (0) |
| 2360 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2361 | /* register physical memory. |
| 2362 | For RAM, 'size' must be a multiple of the target page size. |
| 2363 | If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2364 | io memory page. The address used when calling the IO function is |
| 2365 | the offset from the start of the region, plus region_offset. Both |
| 2366 | start_addr and region_offset are rounded down to a page boundary |
| 2367 | before calculating this offset. This should not be a problem unless |
| 2368 | the low bits of start_addr and region_offset differ. */ |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2369 | void cpu_register_physical_memory_log(target_phys_addr_t start_addr, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2370 | ram_addr_t size, |
| 2371 | ram_addr_t phys_offset, |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2372 | ram_addr_t region_offset, |
| 2373 | bool log_dirty) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2374 | { |
| 2375 | target_phys_addr_t addr, end_addr; |
| 2376 | PhysPageDesc *p; |
| 2377 | CPUState *env; |
| 2378 | ram_addr_t orig_size = size; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2379 | subpage_t *subpage; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2380 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2381 | if (kvm_enabled()) |
| 2382 | kvm_set_phys_mem(start_addr, size, phys_offset); |
Jun Nakajima | a381ef0 | 2011-12-17 19:13:25 -0800 | [diff] [blame] | 2383 | #ifdef CONFIG_HAX |
| 2384 | if (hax_enabled()) |
| 2385 | hax_set_phys_mem(start_addr, size, phys_offset); |
| 2386 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2387 | |
| 2388 | if (phys_offset == IO_MEM_UNASSIGNED) { |
| 2389 | region_offset = start_addr; |
| 2390 | } |
| 2391 | region_offset &= TARGET_PAGE_MASK; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2392 | size = (size + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK; |
| 2393 | end_addr = start_addr + (target_phys_addr_t)size; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2394 | |
| 2395 | addr = start_addr; |
| 2396 | do { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2397 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 2398 | if (p && p->phys_offset != IO_MEM_UNASSIGNED) { |
| 2399 | ram_addr_t orig_memory = p->phys_offset; |
| 2400 | target_phys_addr_t start_addr2, end_addr2; |
| 2401 | int need_subpage = 0; |
| 2402 | |
| 2403 | CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2, |
| 2404 | need_subpage); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2405 | if (need_subpage) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2406 | if (!(orig_memory & IO_MEM_SUBPAGE)) { |
| 2407 | subpage = subpage_init((addr & TARGET_PAGE_MASK), |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2408 | &p->phys_offset, orig_memory, |
| 2409 | p->region_offset); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2410 | } else { |
| 2411 | subpage = io_mem_opaque[(orig_memory & ~TARGET_PAGE_MASK) |
| 2412 | >> IO_MEM_SHIFT]; |
| 2413 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2414 | subpage_register(subpage, start_addr2, end_addr2, phys_offset, |
| 2415 | region_offset); |
| 2416 | p->region_offset = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2417 | } else { |
| 2418 | p->phys_offset = phys_offset; |
| 2419 | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM || |
| 2420 | (phys_offset & IO_MEM_ROMD)) |
| 2421 | phys_offset += TARGET_PAGE_SIZE; |
| 2422 | } |
| 2423 | } else { |
| 2424 | p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS, 1); |
| 2425 | p->phys_offset = phys_offset; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2426 | p->region_offset = region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2427 | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM || |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2428 | (phys_offset & IO_MEM_ROMD)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2429 | phys_offset += TARGET_PAGE_SIZE; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2430 | } else { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2431 | target_phys_addr_t start_addr2, end_addr2; |
| 2432 | int need_subpage = 0; |
| 2433 | |
| 2434 | CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, |
| 2435 | end_addr2, need_subpage); |
| 2436 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2437 | if (need_subpage) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2438 | subpage = subpage_init((addr & TARGET_PAGE_MASK), |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2439 | &p->phys_offset, IO_MEM_UNASSIGNED, |
| 2440 | addr & TARGET_PAGE_MASK); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2441 | subpage_register(subpage, start_addr2, end_addr2, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2442 | phys_offset, region_offset); |
| 2443 | p->region_offset = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2444 | } |
| 2445 | } |
| 2446 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2447 | region_offset += TARGET_PAGE_SIZE; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2448 | addr += TARGET_PAGE_SIZE; |
| 2449 | } while (addr != end_addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2450 | |
| 2451 | /* since each CPU stores ram addresses in its TLB cache, we must |
| 2452 | reset the modified entries */ |
| 2453 | /* XXX: slow ! */ |
| 2454 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 2455 | tlb_flush(env, 1); |
| 2456 | } |
| 2457 | } |
| 2458 | |
| 2459 | /* XXX: temporary until new memory mapping API */ |
| 2460 | ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr) |
| 2461 | { |
| 2462 | PhysPageDesc *p; |
| 2463 | |
| 2464 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 2465 | if (!p) |
| 2466 | return IO_MEM_UNASSIGNED; |
| 2467 | return p->phys_offset; |
| 2468 | } |
| 2469 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2470 | void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
| 2471 | { |
| 2472 | if (kvm_enabled()) |
| 2473 | kvm_coalesce_mmio_region(addr, size); |
| 2474 | } |
| 2475 | |
| 2476 | void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
| 2477 | { |
| 2478 | if (kvm_enabled()) |
| 2479 | kvm_uncoalesce_mmio_region(addr, size); |
| 2480 | } |
| 2481 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2482 | static ram_addr_t find_ram_offset(ram_addr_t size) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2483 | { |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2484 | RAMBlock *block, *next_block; |
| 2485 | ram_addr_t offset = 0, mingap = ULONG_MAX; |
| 2486 | |
| 2487 | if (QLIST_EMPTY(&ram_list.blocks)) |
| 2488 | return 0; |
| 2489 | |
| 2490 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
| 2491 | ram_addr_t end, next = ULONG_MAX; |
| 2492 | |
| 2493 | end = block->offset + block->length; |
| 2494 | |
| 2495 | QLIST_FOREACH(next_block, &ram_list.blocks, next) { |
| 2496 | if (next_block->offset >= end) { |
| 2497 | next = MIN(next, next_block->offset); |
| 2498 | } |
| 2499 | } |
| 2500 | if (next - end >= size && next - end < mingap) { |
| 2501 | offset = end; |
| 2502 | mingap = next - end; |
| 2503 | } |
| 2504 | } |
| 2505 | return offset; |
| 2506 | } |
| 2507 | |
| 2508 | static ram_addr_t last_ram_offset(void) |
| 2509 | { |
| 2510 | RAMBlock *block; |
| 2511 | ram_addr_t last = 0; |
| 2512 | |
| 2513 | QLIST_FOREACH(block, &ram_list.blocks, next) |
| 2514 | last = MAX(last, block->offset + block->length); |
| 2515 | |
| 2516 | return last; |
| 2517 | } |
| 2518 | |
| 2519 | ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name, |
| 2520 | ram_addr_t size, void *host) |
| 2521 | { |
| 2522 | RAMBlock *new_block, *block; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2523 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2524 | size = TARGET_PAGE_ALIGN(size); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2525 | new_block = qemu_mallocz(sizeof(*new_block)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2526 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2527 | #if 0 |
| 2528 | if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) { |
| 2529 | char *id = dev->parent_bus->info->get_dev_path(dev); |
| 2530 | if (id) { |
| 2531 | snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id); |
| 2532 | qemu_free(id); |
| 2533 | } |
| 2534 | } |
| 2535 | #endif |
| 2536 | pstrcat(new_block->idstr, sizeof(new_block->idstr), name); |
| 2537 | |
| 2538 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
| 2539 | if (!strcmp(block->idstr, new_block->idstr)) { |
| 2540 | fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n", |
| 2541 | new_block->idstr); |
| 2542 | abort(); |
| 2543 | } |
| 2544 | } |
| 2545 | |
| 2546 | if (host) { |
| 2547 | new_block->host = host; |
| 2548 | new_block->flags |= RAM_PREALLOC_MASK; |
| 2549 | } else { |
| 2550 | if (mem_path) { |
| 2551 | #if 0 && defined (__linux__) && !defined(TARGET_S390X) |
| 2552 | new_block->host = file_ram_alloc(new_block, size, mem_path); |
| 2553 | if (!new_block->host) { |
| 2554 | new_block->host = qemu_vmalloc(size); |
| 2555 | qemu_madvise(new_block->host, size, QEMU_MADV_MERGEABLE); |
| 2556 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2557 | #else |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2558 | fprintf(stderr, "-mem-path option unsupported\n"); |
| 2559 | exit(1); |
| 2560 | #endif |
| 2561 | } else { |
| 2562 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) |
| 2563 | /* XXX S390 KVM requires the topmost vma of the RAM to be < 256GB */ |
| 2564 | new_block->host = mmap((void*)0x1000000, size, |
| 2565 | PROT_EXEC|PROT_READ|PROT_WRITE, |
| 2566 | MAP_SHARED | MAP_ANONYMOUS, -1, 0); |
| 2567 | #else |
| 2568 | new_block->host = qemu_vmalloc(size); |
Jun Nakajima | a381ef0 | 2011-12-17 19:13:25 -0800 | [diff] [blame] | 2569 | |
| 2570 | #ifdef CONFIG_HAX |
| 2571 | /* |
| 2572 | * In HAX, qemu allocates the virtual address, and HAX kernel |
| 2573 | * module populates the region with physical memory. Currently |
| 2574 | * we don’t populate guest memory on demand, thus we should |
| 2575 | * make sure that sufficient amount of memory is available in |
| 2576 | * advance. |
| 2577 | */ |
| 2578 | if (hax_enabled()) |
| 2579 | { |
| 2580 | int ret; |
| 2581 | ret = hax_populate_ram((uint64_t)new_block->host, size); |
| 2582 | if (ret < 0) |
| 2583 | { |
| 2584 | fprintf(stderr, "Hax failed to populate ram\n"); |
| 2585 | exit(-1); |
| 2586 | } |
| 2587 | } |
| 2588 | #endif |
| 2589 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2590 | #endif |
| 2591 | #ifdef MADV_MERGEABLE |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2592 | madvise(new_block->host, size, MADV_MERGEABLE); |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2593 | #endif |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2594 | } |
| 2595 | } |
| 2596 | |
| 2597 | new_block->offset = find_ram_offset(size); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2598 | new_block->length = size; |
| 2599 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2600 | QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2601 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2602 | ram_list.phys_dirty = qemu_realloc(ram_list.phys_dirty, |
| 2603 | last_ram_offset() >> TARGET_PAGE_BITS); |
| 2604 | memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS), |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2605 | 0xff, size >> TARGET_PAGE_BITS); |
| 2606 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2607 | if (kvm_enabled()) |
| 2608 | kvm_setup_guest_memory(new_block->host, size); |
| 2609 | |
| 2610 | return new_block->offset; |
| 2611 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2612 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2613 | ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size) |
| 2614 | { |
| 2615 | return qemu_ram_alloc_from_ptr(dev, name, size, NULL); |
| 2616 | } |
| 2617 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2618 | void qemu_ram_free(ram_addr_t addr) |
| 2619 | { |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2620 | RAMBlock *block; |
| 2621 | |
| 2622 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
| 2623 | if (addr == block->offset) { |
| 2624 | QLIST_REMOVE(block, next); |
| 2625 | if (block->flags & RAM_PREALLOC_MASK) { |
| 2626 | ; |
| 2627 | } else if (mem_path) { |
| 2628 | #if defined (__linux__) && !defined(TARGET_S390X) |
| 2629 | if (block->fd) { |
| 2630 | munmap(block->host, block->length); |
| 2631 | close(block->fd); |
| 2632 | } else { |
| 2633 | qemu_vfree(block->host); |
| 2634 | } |
| 2635 | #else |
| 2636 | abort(); |
| 2637 | #endif |
| 2638 | } else { |
| 2639 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) |
| 2640 | munmap(block->host, block->length); |
| 2641 | #else |
| 2642 | qemu_vfree(block->host); |
| 2643 | #endif |
| 2644 | } |
| 2645 | qemu_free(block); |
| 2646 | return; |
| 2647 | } |
| 2648 | } |
| 2649 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2650 | } |
| 2651 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2652 | #ifndef _WIN32 |
| 2653 | void qemu_ram_remap(ram_addr_t addr, ram_addr_t length) |
| 2654 | { |
| 2655 | #ifndef CONFIG_ANDROID |
| 2656 | RAMBlock *block; |
| 2657 | ram_addr_t offset; |
| 2658 | int flags; |
| 2659 | void *area, *vaddr; |
| 2660 | |
| 2661 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
| 2662 | offset = addr - block->offset; |
| 2663 | if (offset < block->length) { |
| 2664 | vaddr = block->host + offset; |
| 2665 | if (block->flags & RAM_PREALLOC_MASK) { |
| 2666 | ; |
| 2667 | } else { |
| 2668 | flags = MAP_FIXED; |
| 2669 | munmap(vaddr, length); |
| 2670 | if (mem_path) { |
| 2671 | #if defined(__linux__) && !defined(TARGET_S390X) |
| 2672 | if (block->fd) { |
| 2673 | #ifdef MAP_POPULATE |
| 2674 | flags |= mem_prealloc ? MAP_POPULATE | MAP_SHARED : |
| 2675 | MAP_PRIVATE; |
| 2676 | #else |
| 2677 | flags |= MAP_PRIVATE; |
| 2678 | #endif |
| 2679 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, |
| 2680 | flags, block->fd, offset); |
| 2681 | } else { |
| 2682 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; |
| 2683 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, |
| 2684 | flags, -1, 0); |
| 2685 | } |
| 2686 | #else |
| 2687 | abort(); |
| 2688 | #endif |
| 2689 | } else { |
| 2690 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) |
| 2691 | flags |= MAP_SHARED | MAP_ANONYMOUS; |
| 2692 | area = mmap(vaddr, length, PROT_EXEC|PROT_READ|PROT_WRITE, |
| 2693 | flags, -1, 0); |
| 2694 | #else |
| 2695 | flags |= MAP_PRIVATE | MAP_ANONYMOUS; |
| 2696 | area = mmap(vaddr, length, PROT_READ | PROT_WRITE, |
| 2697 | flags, -1, 0); |
| 2698 | #endif |
| 2699 | } |
| 2700 | if (area != vaddr) { |
| 2701 | fprintf(stderr, "Could not remap addr: %lx@%lx\n", |
| 2702 | length, addr); |
| 2703 | exit(1); |
| 2704 | } |
| 2705 | qemu_madvise(vaddr, length, QEMU_MADV_MERGEABLE); |
| 2706 | } |
| 2707 | return; |
| 2708 | } |
| 2709 | } |
| 2710 | #endif /* !CONFIG_ANDROID */ |
| 2711 | } |
| 2712 | #endif /* !_WIN32 */ |
| 2713 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2714 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
| 2715 | With the exception of the softmmu code in this file, this should |
| 2716 | only be used for local memory (e.g. video ram) that the device owns, |
| 2717 | and knows it isn't going to access beyond the end of the block. |
| 2718 | |
| 2719 | It should not be used for general purpose DMA. |
| 2720 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. |
| 2721 | */ |
| 2722 | void *qemu_get_ram_ptr(ram_addr_t addr) |
| 2723 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2724 | RAMBlock *block; |
| 2725 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2726 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
| 2727 | if (addr - block->offset < block->length) { |
| 2728 | /* Move this entry to to start of the list. */ |
| 2729 | if (block != QLIST_FIRST(&ram_list.blocks)) { |
| 2730 | QLIST_REMOVE(block, next); |
| 2731 | QLIST_INSERT_HEAD(&ram_list.blocks, block, next); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2732 | } |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2733 | return block->host + (addr - block->offset); |
| 2734 | } |
| 2735 | } |
| 2736 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2737 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); |
| 2738 | abort(); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2739 | |
| 2740 | return NULL; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2741 | } |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2742 | |
| 2743 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
| 2744 | * Same as qemu_get_ram_ptr but avoid reordering ramblocks. |
| 2745 | */ |
| 2746 | void *qemu_safe_ram_ptr(ram_addr_t addr) |
| 2747 | { |
| 2748 | RAMBlock *block; |
| 2749 | |
| 2750 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
| 2751 | if (addr - block->offset < block->length) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2752 | return block->host + (addr - block->offset); |
| 2753 | } |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2754 | } |
| 2755 | |
| 2756 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); |
| 2757 | abort(); |
| 2758 | |
| 2759 | return NULL; |
| 2760 | } |
| 2761 | |
| 2762 | int qemu_ram_addr_from_host(void *ptr, ram_addr_t *ram_addr) |
| 2763 | { |
| 2764 | RAMBlock *block; |
| 2765 | uint8_t *host = ptr; |
| 2766 | |
| 2767 | QLIST_FOREACH(block, &ram_list.blocks, next) { |
| 2768 | if (host - block->host < block->length) { |
| 2769 | *ram_addr = block->offset + (host - block->host); |
| 2770 | return 0; |
| 2771 | } |
| 2772 | } |
| 2773 | return -1; |
| 2774 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2775 | |
| 2776 | /* Some of the softmmu routines need to translate from a host pointer |
| 2777 | (typically a TLB entry) back to a ram offset. */ |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2778 | ram_addr_t qemu_ram_addr_from_host_nofail(void *ptr) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2779 | { |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2780 | ram_addr_t ram_addr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2781 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2782 | if (qemu_ram_addr_from_host(ptr, &ram_addr)) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2783 | fprintf(stderr, "Bad ram pointer %p\n", ptr); |
| 2784 | abort(); |
| 2785 | } |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2786 | return ram_addr; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2787 | } |
| 2788 | |
| 2789 | static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr) |
| 2790 | { |
| 2791 | #ifdef DEBUG_UNASSIGNED |
| 2792 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); |
| 2793 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2794 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2795 | do_unassigned_access(addr, 0, 0, 0, 1); |
| 2796 | #endif |
| 2797 | return 0; |
| 2798 | } |
| 2799 | |
| 2800 | static uint32_t unassigned_mem_readw(void *opaque, target_phys_addr_t addr) |
| 2801 | { |
| 2802 | #ifdef DEBUG_UNASSIGNED |
| 2803 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); |
| 2804 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2805 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2806 | do_unassigned_access(addr, 0, 0, 0, 2); |
| 2807 | #endif |
| 2808 | return 0; |
| 2809 | } |
| 2810 | |
| 2811 | static uint32_t unassigned_mem_readl(void *opaque, target_phys_addr_t addr) |
| 2812 | { |
| 2813 | #ifdef DEBUG_UNASSIGNED |
| 2814 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); |
| 2815 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2816 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2817 | do_unassigned_access(addr, 0, 0, 0, 4); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2818 | #endif |
| 2819 | return 0; |
| 2820 | } |
| 2821 | |
| 2822 | static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 2823 | { |
| 2824 | #ifdef DEBUG_UNASSIGNED |
| 2825 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); |
| 2826 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2827 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2828 | do_unassigned_access(addr, 1, 0, 0, 1); |
| 2829 | #endif |
| 2830 | } |
| 2831 | |
| 2832 | static void unassigned_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 2833 | { |
| 2834 | #ifdef DEBUG_UNASSIGNED |
| 2835 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); |
| 2836 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2837 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2838 | do_unassigned_access(addr, 1, 0, 0, 2); |
| 2839 | #endif |
| 2840 | } |
| 2841 | |
| 2842 | static void unassigned_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 2843 | { |
| 2844 | #ifdef DEBUG_UNASSIGNED |
| 2845 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); |
| 2846 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2847 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2848 | do_unassigned_access(addr, 1, 0, 0, 4); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2849 | #endif |
| 2850 | } |
| 2851 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2852 | static CPUReadMemoryFunc * const unassigned_mem_read[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2853 | unassigned_mem_readb, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2854 | unassigned_mem_readw, |
| 2855 | unassigned_mem_readl, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2856 | }; |
| 2857 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2858 | static CPUWriteMemoryFunc * const unassigned_mem_write[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2859 | unassigned_mem_writeb, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2860 | unassigned_mem_writew, |
| 2861 | unassigned_mem_writel, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2862 | }; |
| 2863 | |
| 2864 | static void notdirty_mem_writeb(void *opaque, target_phys_addr_t ram_addr, |
| 2865 | uint32_t val) |
| 2866 | { |
| 2867 | int dirty_flags; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2868 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2869 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
| 2870 | #if !defined(CONFIG_USER_ONLY) |
| 2871 | tb_invalidate_phys_page_fast(ram_addr, 1); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2872 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2873 | #endif |
| 2874 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2875 | stb_p(qemu_get_ram_ptr(ram_addr), val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2876 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2877 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2878 | /* we remove the notdirty callback only if the code has been |
| 2879 | flushed */ |
| 2880 | if (dirty_flags == 0xff) |
| 2881 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
| 2882 | } |
| 2883 | |
| 2884 | static void notdirty_mem_writew(void *opaque, target_phys_addr_t ram_addr, |
| 2885 | uint32_t val) |
| 2886 | { |
| 2887 | int dirty_flags; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2888 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2889 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
| 2890 | #if !defined(CONFIG_USER_ONLY) |
| 2891 | tb_invalidate_phys_page_fast(ram_addr, 2); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2892 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2893 | #endif |
| 2894 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2895 | stw_p(qemu_get_ram_ptr(ram_addr), val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2896 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2897 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2898 | /* we remove the notdirty callback only if the code has been |
| 2899 | flushed */ |
| 2900 | if (dirty_flags == 0xff) |
| 2901 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
| 2902 | } |
| 2903 | |
| 2904 | static void notdirty_mem_writel(void *opaque, target_phys_addr_t ram_addr, |
| 2905 | uint32_t val) |
| 2906 | { |
| 2907 | int dirty_flags; |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2908 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2909 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
| 2910 | #if !defined(CONFIG_USER_ONLY) |
| 2911 | tb_invalidate_phys_page_fast(ram_addr, 4); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2912 | dirty_flags = cpu_physical_memory_get_dirty_flags(ram_addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2913 | #endif |
| 2914 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2915 | stl_p(qemu_get_ram_ptr(ram_addr), val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2916 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 2917 | cpu_physical_memory_set_dirty_flags(ram_addr, dirty_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2918 | /* we remove the notdirty callback only if the code has been |
| 2919 | flushed */ |
| 2920 | if (dirty_flags == 0xff) |
| 2921 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
| 2922 | } |
| 2923 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2924 | static CPUReadMemoryFunc * const error_mem_read[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2925 | NULL, /* never used */ |
| 2926 | NULL, /* never used */ |
| 2927 | NULL, /* never used */ |
| 2928 | }; |
| 2929 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2930 | static CPUWriteMemoryFunc * const notdirty_mem_write[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2931 | notdirty_mem_writeb, |
| 2932 | notdirty_mem_writew, |
| 2933 | notdirty_mem_writel, |
| 2934 | }; |
| 2935 | |
| 2936 | /* Generate a debug exception if a watchpoint has been hit. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2937 | static void check_watchpoint(int offset, int len_mask, int flags) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2938 | { |
| 2939 | CPUState *env = cpu_single_env; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2940 | target_ulong pc, cs_base; |
| 2941 | TranslationBlock *tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2942 | target_ulong vaddr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2943 | CPUWatchpoint *wp; |
| 2944 | int cpu_flags; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2945 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2946 | if (env->watchpoint_hit) { |
| 2947 | /* We re-entered the check after replacing the TB. Now raise |
| 2948 | * the debug interrupt so that is will trigger after the |
| 2949 | * current instruction. */ |
| 2950 | cpu_interrupt(env, CPU_INTERRUPT_DEBUG); |
| 2951 | return; |
| 2952 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2953 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2954 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2955 | if ((vaddr == (wp->vaddr & len_mask) || |
| 2956 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { |
| 2957 | wp->flags |= BP_WATCHPOINT_HIT; |
| 2958 | if (!env->watchpoint_hit) { |
| 2959 | env->watchpoint_hit = wp; |
| 2960 | tb = tb_find_pc(env->mem_io_pc); |
| 2961 | if (!tb) { |
| 2962 | cpu_abort(env, "check_watchpoint: could not find TB for " |
| 2963 | "pc=%p", (void *)env->mem_io_pc); |
| 2964 | } |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 2965 | cpu_restore_state(tb, env, env->mem_io_pc); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2966 | tb_phys_invalidate(tb, -1); |
| 2967 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { |
| 2968 | env->exception_index = EXCP_DEBUG; |
| 2969 | } else { |
| 2970 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); |
| 2971 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); |
| 2972 | } |
| 2973 | cpu_resume_from_signal(env, NULL); |
| 2974 | } |
| 2975 | } else { |
| 2976 | wp->flags &= ~BP_WATCHPOINT_HIT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2977 | } |
| 2978 | } |
| 2979 | } |
| 2980 | |
| 2981 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
| 2982 | so these check for a hit then pass through to the normal out-of-line |
| 2983 | phys routines. */ |
| 2984 | static uint32_t watch_mem_readb(void *opaque, target_phys_addr_t addr) |
| 2985 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2986 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x0, BP_MEM_READ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2987 | return ldub_phys(addr); |
| 2988 | } |
| 2989 | |
| 2990 | static uint32_t watch_mem_readw(void *opaque, target_phys_addr_t addr) |
| 2991 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2992 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x1, BP_MEM_READ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2993 | return lduw_phys(addr); |
| 2994 | } |
| 2995 | |
| 2996 | static uint32_t watch_mem_readl(void *opaque, target_phys_addr_t addr) |
| 2997 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2998 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x3, BP_MEM_READ); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2999 | return ldl_phys(addr); |
| 3000 | } |
| 3001 | |
| 3002 | static void watch_mem_writeb(void *opaque, target_phys_addr_t addr, |
| 3003 | uint32_t val) |
| 3004 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3005 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x0, BP_MEM_WRITE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3006 | stb_phys(addr, val); |
| 3007 | } |
| 3008 | |
| 3009 | static void watch_mem_writew(void *opaque, target_phys_addr_t addr, |
| 3010 | uint32_t val) |
| 3011 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3012 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x1, BP_MEM_WRITE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3013 | stw_phys(addr, val); |
| 3014 | } |
| 3015 | |
| 3016 | static void watch_mem_writel(void *opaque, target_phys_addr_t addr, |
| 3017 | uint32_t val) |
| 3018 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3019 | check_watchpoint(addr & ~TARGET_PAGE_MASK, ~0x3, BP_MEM_WRITE); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3020 | stl_phys(addr, val); |
| 3021 | } |
| 3022 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3023 | static CPUReadMemoryFunc * const watch_mem_read[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3024 | watch_mem_readb, |
| 3025 | watch_mem_readw, |
| 3026 | watch_mem_readl, |
| 3027 | }; |
| 3028 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3029 | static CPUWriteMemoryFunc * const watch_mem_write[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3030 | watch_mem_writeb, |
| 3031 | watch_mem_writew, |
| 3032 | watch_mem_writel, |
| 3033 | }; |
| 3034 | |
| 3035 | static inline uint32_t subpage_readlen (subpage_t *mmio, target_phys_addr_t addr, |
| 3036 | unsigned int len) |
| 3037 | { |
| 3038 | uint32_t ret; |
| 3039 | unsigned int idx; |
| 3040 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3041 | idx = SUBPAGE_IDX(addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3042 | #if defined(DEBUG_SUBPAGE) |
| 3043 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__, |
| 3044 | mmio, len, addr, idx); |
| 3045 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3046 | ret = (**mmio->mem_read[idx][len])(mmio->opaque[idx][0][len], |
| 3047 | addr + mmio->region_offset[idx][0][len]); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3048 | |
| 3049 | return ret; |
| 3050 | } |
| 3051 | |
| 3052 | static inline void subpage_writelen (subpage_t *mmio, target_phys_addr_t addr, |
| 3053 | uint32_t value, unsigned int len) |
| 3054 | { |
| 3055 | unsigned int idx; |
| 3056 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3057 | idx = SUBPAGE_IDX(addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3058 | #if defined(DEBUG_SUBPAGE) |
| 3059 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d value %08x\n", __func__, |
| 3060 | mmio, len, addr, idx, value); |
| 3061 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3062 | (**mmio->mem_write[idx][len])(mmio->opaque[idx][1][len], |
| 3063 | addr + mmio->region_offset[idx][1][len], |
| 3064 | value); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3065 | } |
| 3066 | |
| 3067 | static uint32_t subpage_readb (void *opaque, target_phys_addr_t addr) |
| 3068 | { |
| 3069 | #if defined(DEBUG_SUBPAGE) |
| 3070 | printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 3071 | #endif |
| 3072 | |
| 3073 | return subpage_readlen(opaque, addr, 0); |
| 3074 | } |
| 3075 | |
| 3076 | static void subpage_writeb (void *opaque, target_phys_addr_t addr, |
| 3077 | uint32_t value) |
| 3078 | { |
| 3079 | #if defined(DEBUG_SUBPAGE) |
| 3080 | printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value); |
| 3081 | #endif |
| 3082 | subpage_writelen(opaque, addr, value, 0); |
| 3083 | } |
| 3084 | |
| 3085 | static uint32_t subpage_readw (void *opaque, target_phys_addr_t addr) |
| 3086 | { |
| 3087 | #if defined(DEBUG_SUBPAGE) |
| 3088 | printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 3089 | #endif |
| 3090 | |
| 3091 | return subpage_readlen(opaque, addr, 1); |
| 3092 | } |
| 3093 | |
| 3094 | static void subpage_writew (void *opaque, target_phys_addr_t addr, |
| 3095 | uint32_t value) |
| 3096 | { |
| 3097 | #if defined(DEBUG_SUBPAGE) |
| 3098 | printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value); |
| 3099 | #endif |
| 3100 | subpage_writelen(opaque, addr, value, 1); |
| 3101 | } |
| 3102 | |
| 3103 | static uint32_t subpage_readl (void *opaque, target_phys_addr_t addr) |
| 3104 | { |
| 3105 | #if defined(DEBUG_SUBPAGE) |
| 3106 | printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 3107 | #endif |
| 3108 | |
| 3109 | return subpage_readlen(opaque, addr, 2); |
| 3110 | } |
| 3111 | |
| 3112 | static void subpage_writel (void *opaque, |
| 3113 | target_phys_addr_t addr, uint32_t value) |
| 3114 | { |
| 3115 | #if defined(DEBUG_SUBPAGE) |
| 3116 | printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value); |
| 3117 | #endif |
| 3118 | subpage_writelen(opaque, addr, value, 2); |
| 3119 | } |
| 3120 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3121 | static CPUReadMemoryFunc * const subpage_read[] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3122 | &subpage_readb, |
| 3123 | &subpage_readw, |
| 3124 | &subpage_readl, |
| 3125 | }; |
| 3126 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3127 | static CPUWriteMemoryFunc * const subpage_write[] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3128 | &subpage_writeb, |
| 3129 | &subpage_writew, |
| 3130 | &subpage_writel, |
| 3131 | }; |
| 3132 | |
| 3133 | static int subpage_register (subpage_t *mmio, uint32_t start, uint32_t end, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3134 | ram_addr_t memory, ram_addr_t region_offset) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3135 | { |
| 3136 | int idx, eidx; |
| 3137 | unsigned int i; |
| 3138 | |
| 3139 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) |
| 3140 | return -1; |
| 3141 | idx = SUBPAGE_IDX(start); |
| 3142 | eidx = SUBPAGE_IDX(end); |
| 3143 | #if defined(DEBUG_SUBPAGE) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3144 | printf("%s: %p start %08x end %08x idx %08x eidx %08x mem %ld\n", __func__, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3145 | mmio, start, end, idx, eidx, memory); |
| 3146 | #endif |
| 3147 | memory >>= IO_MEM_SHIFT; |
| 3148 | for (; idx <= eidx; idx++) { |
| 3149 | for (i = 0; i < 4; i++) { |
| 3150 | if (io_mem_read[memory][i]) { |
| 3151 | mmio->mem_read[idx][i] = &io_mem_read[memory][i]; |
| 3152 | mmio->opaque[idx][0][i] = io_mem_opaque[memory]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3153 | mmio->region_offset[idx][0][i] = region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3154 | } |
| 3155 | if (io_mem_write[memory][i]) { |
| 3156 | mmio->mem_write[idx][i] = &io_mem_write[memory][i]; |
| 3157 | mmio->opaque[idx][1][i] = io_mem_opaque[memory]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3158 | mmio->region_offset[idx][1][i] = region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3159 | } |
| 3160 | } |
| 3161 | } |
| 3162 | |
| 3163 | return 0; |
| 3164 | } |
| 3165 | |
| 3166 | static void *subpage_init (target_phys_addr_t base, ram_addr_t *phys, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3167 | ram_addr_t orig_memory, ram_addr_t region_offset) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3168 | { |
| 3169 | subpage_t *mmio; |
| 3170 | int subpage_memory; |
| 3171 | |
| 3172 | mmio = qemu_mallocz(sizeof(subpage_t)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3173 | |
| 3174 | mmio->base = base; |
| 3175 | subpage_memory = cpu_register_io_memory(subpage_read, subpage_write, mmio); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3176 | #if defined(DEBUG_SUBPAGE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3177 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
| 3178 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3179 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3180 | *phys = subpage_memory | IO_MEM_SUBPAGE; |
| 3181 | subpage_register(mmio, 0, TARGET_PAGE_SIZE - 1, orig_memory, |
| 3182 | region_offset); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3183 | |
| 3184 | return mmio; |
| 3185 | } |
| 3186 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3187 | static int get_free_io_mem_idx(void) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3188 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3189 | int i; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3190 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3191 | for (i = 0; i<IO_MEM_NB_ENTRIES; i++) |
| 3192 | if (!io_mem_used[i]) { |
| 3193 | io_mem_used[i] = 1; |
| 3194 | return i; |
| 3195 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3196 | fprintf(stderr, "RAN out out io_mem_idx, max %d !\n", IO_MEM_NB_ENTRIES); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3197 | return -1; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3198 | } |
| 3199 | |
| 3200 | /* mem_read and mem_write are arrays of functions containing the |
| 3201 | function to access byte (index 0), word (index 1) and dword (index |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3202 | 2). Functions can be omitted with a NULL function pointer. |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3203 | If io_index is non zero, the corresponding io zone is |
| 3204 | modified. If it is zero, a new io zone is allocated. The return |
| 3205 | value can be used with cpu_register_physical_memory(). (-1) is |
| 3206 | returned if error. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3207 | static int cpu_register_io_memory_fixed(int io_index, |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3208 | CPUReadMemoryFunc * const *mem_read, |
| 3209 | CPUWriteMemoryFunc * const *mem_write, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3210 | void *opaque) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3211 | { |
| 3212 | int i, subwidth = 0; |
| 3213 | |
| 3214 | if (io_index <= 0) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3215 | io_index = get_free_io_mem_idx(); |
| 3216 | if (io_index == -1) |
| 3217 | return io_index; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3218 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3219 | io_index >>= IO_MEM_SHIFT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3220 | if (io_index >= IO_MEM_NB_ENTRIES) |
| 3221 | return -1; |
| 3222 | } |
| 3223 | |
| 3224 | for(i = 0;i < 3; i++) { |
| 3225 | if (!mem_read[i] || !mem_write[i]) |
| 3226 | subwidth = IO_MEM_SUBWIDTH; |
| 3227 | io_mem_read[io_index][i] = mem_read[i]; |
| 3228 | io_mem_write[io_index][i] = mem_write[i]; |
| 3229 | } |
| 3230 | io_mem_opaque[io_index] = opaque; |
| 3231 | return (io_index << IO_MEM_SHIFT) | subwidth; |
| 3232 | } |
| 3233 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3234 | int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read, |
| 3235 | CPUWriteMemoryFunc * const *mem_write, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3236 | void *opaque) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3237 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3238 | return cpu_register_io_memory_fixed(0, mem_read, mem_write, opaque); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3239 | } |
| 3240 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3241 | void cpu_unregister_io_memory(int io_table_address) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3242 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3243 | int i; |
| 3244 | int io_index = io_table_address >> IO_MEM_SHIFT; |
| 3245 | |
| 3246 | for (i=0;i < 3; i++) { |
| 3247 | io_mem_read[io_index][i] = unassigned_mem_read[i]; |
| 3248 | io_mem_write[io_index][i] = unassigned_mem_write[i]; |
| 3249 | } |
| 3250 | io_mem_opaque[io_index] = NULL; |
| 3251 | io_mem_used[io_index] = 0; |
| 3252 | } |
| 3253 | |
| 3254 | static void io_mem_init(void) |
| 3255 | { |
| 3256 | int i; |
| 3257 | |
| 3258 | cpu_register_io_memory_fixed(IO_MEM_ROM, error_mem_read, unassigned_mem_write, NULL); |
| 3259 | cpu_register_io_memory_fixed(IO_MEM_UNASSIGNED, unassigned_mem_read, unassigned_mem_write, NULL); |
| 3260 | cpu_register_io_memory_fixed(IO_MEM_NOTDIRTY, error_mem_read, notdirty_mem_write, NULL); |
| 3261 | for (i=0; i<5; i++) |
| 3262 | io_mem_used[i] = 1; |
| 3263 | |
| 3264 | io_mem_watch = cpu_register_io_memory(watch_mem_read, |
| 3265 | watch_mem_write, NULL); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3266 | } |
| 3267 | |
| 3268 | #endif /* !defined(CONFIG_USER_ONLY) */ |
| 3269 | |
| 3270 | /* physical memory access (slow version, mainly for debug) */ |
| 3271 | #if defined(CONFIG_USER_ONLY) |
| 3272 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
| 3273 | int len, int is_write) |
| 3274 | { |
| 3275 | int l, flags; |
| 3276 | target_ulong page; |
| 3277 | void * p; |
| 3278 | |
| 3279 | while (len > 0) { |
| 3280 | page = addr & TARGET_PAGE_MASK; |
| 3281 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3282 | if (l > len) |
| 3283 | l = len; |
| 3284 | flags = page_get_flags(page); |
| 3285 | if (!(flags & PAGE_VALID)) |
| 3286 | return; |
| 3287 | if (is_write) { |
| 3288 | if (!(flags & PAGE_WRITE)) |
| 3289 | return; |
| 3290 | /* XXX: this code should not depend on lock_user */ |
| 3291 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
| 3292 | /* FIXME - should this return an error rather than just fail? */ |
| 3293 | return; |
| 3294 | memcpy(p, buf, l); |
| 3295 | unlock_user(p, addr, l); |
| 3296 | } else { |
| 3297 | if (!(flags & PAGE_READ)) |
| 3298 | return; |
| 3299 | /* XXX: this code should not depend on lock_user */ |
| 3300 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
| 3301 | /* FIXME - should this return an error rather than just fail? */ |
| 3302 | return; |
| 3303 | memcpy(buf, p, l); |
| 3304 | unlock_user(p, addr, 0); |
| 3305 | } |
| 3306 | len -= l; |
| 3307 | buf += l; |
| 3308 | addr += l; |
| 3309 | } |
| 3310 | } |
| 3311 | |
| 3312 | #else |
Pete Delaney | d09d766 | 2013-03-28 19:53:13 -0700 | [diff] [blame] | 3313 | |
| 3314 | static void invalidate_and_set_dirty(target_phys_addr_t addr, |
| 3315 | target_phys_addr_t length) |
| 3316 | { |
| 3317 | if (!cpu_physical_memory_is_dirty(addr)) { |
| 3318 | /* invalidate code */ |
| 3319 | tb_invalidate_phys_page_range(addr, addr + length, 0); |
| 3320 | /* set dirty bit */ |
| 3321 | cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG)); |
| 3322 | } |
| 3323 | } |
| 3324 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3325 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
| 3326 | int len, int is_write) |
| 3327 | { |
| 3328 | int l, io_index; |
| 3329 | uint8_t *ptr; |
| 3330 | uint32_t val; |
| 3331 | target_phys_addr_t page; |
| 3332 | unsigned long pd; |
| 3333 | PhysPageDesc *p; |
| 3334 | |
| 3335 | while (len > 0) { |
| 3336 | page = addr & TARGET_PAGE_MASK; |
| 3337 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3338 | if (l > len) |
| 3339 | l = len; |
| 3340 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
| 3341 | if (!p) { |
| 3342 | pd = IO_MEM_UNASSIGNED; |
| 3343 | } else { |
| 3344 | pd = p->phys_offset; |
| 3345 | } |
| 3346 | |
| 3347 | if (is_write) { |
| 3348 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3349 | target_phys_addr_t addr1 = addr; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3350 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3351 | if (p) |
| 3352 | addr1 = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3353 | /* XXX: could force cpu_single_env to NULL to avoid |
| 3354 | potential bugs */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3355 | if (l >= 4 && ((addr1 & 3) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3356 | /* 32 bit write access */ |
| 3357 | val = ldl_p(buf); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3358 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr1, val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3359 | l = 4; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3360 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3361 | /* 16 bit write access */ |
| 3362 | val = lduw_p(buf); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3363 | io_mem_write[io_index][1](io_mem_opaque[io_index], addr1, val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3364 | l = 2; |
| 3365 | } else { |
| 3366 | /* 8 bit write access */ |
| 3367 | val = ldub_p(buf); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3368 | io_mem_write[io_index][0](io_mem_opaque[io_index], addr1, val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3369 | l = 1; |
| 3370 | } |
| 3371 | } else { |
| 3372 | unsigned long addr1; |
| 3373 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3374 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3375 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3376 | memcpy(ptr, buf, l); |
Pete Delaney | d09d766 | 2013-03-28 19:53:13 -0700 | [diff] [blame] | 3377 | invalidate_and_set_dirty(addr1, l); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3378 | } |
| 3379 | } else { |
| 3380 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && |
| 3381 | !(pd & IO_MEM_ROMD)) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3382 | target_phys_addr_t addr1 = addr; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3383 | /* I/O case */ |
| 3384 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3385 | if (p) |
| 3386 | addr1 = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
| 3387 | if (l >= 4 && ((addr1 & 3) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3388 | /* 32 bit read access */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3389 | val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3390 | stl_p(buf, val); |
| 3391 | l = 4; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3392 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3393 | /* 16 bit read access */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3394 | val = io_mem_read[io_index][1](io_mem_opaque[io_index], addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3395 | stw_p(buf, val); |
| 3396 | l = 2; |
| 3397 | } else { |
| 3398 | /* 8 bit read access */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3399 | val = io_mem_read[io_index][0](io_mem_opaque[io_index], addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3400 | stb_p(buf, val); |
| 3401 | l = 1; |
| 3402 | } |
| 3403 | } else { |
| 3404 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3405 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3406 | (addr & ~TARGET_PAGE_MASK); |
| 3407 | memcpy(buf, ptr, l); |
| 3408 | } |
| 3409 | } |
| 3410 | len -= l; |
| 3411 | buf += l; |
| 3412 | addr += l; |
| 3413 | } |
| 3414 | } |
| 3415 | |
| 3416 | /* used for ROM loading : can write in RAM and ROM */ |
| 3417 | void cpu_physical_memory_write_rom(target_phys_addr_t addr, |
| 3418 | const uint8_t *buf, int len) |
| 3419 | { |
| 3420 | int l; |
| 3421 | uint8_t *ptr; |
| 3422 | target_phys_addr_t page; |
| 3423 | unsigned long pd; |
| 3424 | PhysPageDesc *p; |
| 3425 | |
| 3426 | while (len > 0) { |
| 3427 | page = addr & TARGET_PAGE_MASK; |
| 3428 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3429 | if (l > len) |
| 3430 | l = len; |
| 3431 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
| 3432 | if (!p) { |
| 3433 | pd = IO_MEM_UNASSIGNED; |
| 3434 | } else { |
| 3435 | pd = p->phys_offset; |
| 3436 | } |
| 3437 | |
| 3438 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM && |
| 3439 | (pd & ~TARGET_PAGE_MASK) != IO_MEM_ROM && |
| 3440 | !(pd & IO_MEM_ROMD)) { |
| 3441 | /* do nothing */ |
| 3442 | } else { |
| 3443 | unsigned long addr1; |
| 3444 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3445 | /* ROM/RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3446 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3447 | memcpy(ptr, buf, l); |
Pete Delaney | d09d766 | 2013-03-28 19:53:13 -0700 | [diff] [blame] | 3448 | invalidate_and_set_dirty(addr1, l); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3449 | } |
| 3450 | len -= l; |
| 3451 | buf += l; |
| 3452 | addr += l; |
| 3453 | } |
| 3454 | } |
| 3455 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3456 | typedef struct { |
| 3457 | void *buffer; |
| 3458 | target_phys_addr_t addr; |
| 3459 | target_phys_addr_t len; |
| 3460 | } BounceBuffer; |
| 3461 | |
| 3462 | static BounceBuffer bounce; |
| 3463 | |
| 3464 | typedef struct MapClient { |
| 3465 | void *opaque; |
| 3466 | void (*callback)(void *opaque); |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3467 | QLIST_ENTRY(MapClient) link; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3468 | } MapClient; |
| 3469 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3470 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
| 3471 | = QLIST_HEAD_INITIALIZER(map_client_list); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3472 | |
| 3473 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) |
| 3474 | { |
| 3475 | MapClient *client = qemu_malloc(sizeof(*client)); |
| 3476 | |
| 3477 | client->opaque = opaque; |
| 3478 | client->callback = callback; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3479 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3480 | return client; |
| 3481 | } |
| 3482 | |
| 3483 | void cpu_unregister_map_client(void *_client) |
| 3484 | { |
| 3485 | MapClient *client = (MapClient *)_client; |
| 3486 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3487 | QLIST_REMOVE(client, link); |
| 3488 | qemu_free(client); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3489 | } |
| 3490 | |
| 3491 | static void cpu_notify_map_clients(void) |
| 3492 | { |
| 3493 | MapClient *client; |
| 3494 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3495 | while (!QLIST_EMPTY(&map_client_list)) { |
| 3496 | client = QLIST_FIRST(&map_client_list); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3497 | client->callback(client->opaque); |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3498 | QLIST_REMOVE(client, link); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3499 | } |
| 3500 | } |
| 3501 | |
| 3502 | /* Map a physical memory region into a host virtual address. |
| 3503 | * May map a subset of the requested range, given by and returned in *plen. |
| 3504 | * May return NULL if resources needed to perform the mapping are exhausted. |
| 3505 | * Use only for reads OR writes - not for read-modify-write operations. |
| 3506 | * Use cpu_register_map_client() to know when retrying the map operation is |
| 3507 | * likely to succeed. |
| 3508 | */ |
| 3509 | void *cpu_physical_memory_map(target_phys_addr_t addr, |
| 3510 | target_phys_addr_t *plen, |
| 3511 | int is_write) |
| 3512 | { |
| 3513 | target_phys_addr_t len = *plen; |
| 3514 | target_phys_addr_t done = 0; |
| 3515 | int l; |
| 3516 | uint8_t *ret = NULL; |
| 3517 | uint8_t *ptr; |
| 3518 | target_phys_addr_t page; |
| 3519 | unsigned long pd; |
| 3520 | PhysPageDesc *p; |
| 3521 | unsigned long addr1; |
| 3522 | |
| 3523 | while (len > 0) { |
| 3524 | page = addr & TARGET_PAGE_MASK; |
| 3525 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3526 | if (l > len) |
| 3527 | l = len; |
| 3528 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
| 3529 | if (!p) { |
| 3530 | pd = IO_MEM_UNASSIGNED; |
| 3531 | } else { |
| 3532 | pd = p->phys_offset; |
| 3533 | } |
| 3534 | |
| 3535 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3536 | if (done || bounce.buffer) { |
| 3537 | break; |
| 3538 | } |
| 3539 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); |
| 3540 | bounce.addr = addr; |
| 3541 | bounce.len = l; |
| 3542 | if (!is_write) { |
| 3543 | cpu_physical_memory_rw(addr, bounce.buffer, l, 0); |
| 3544 | } |
| 3545 | ptr = bounce.buffer; |
| 3546 | } else { |
| 3547 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3548 | ptr = qemu_get_ram_ptr(addr1); |
| 3549 | } |
| 3550 | if (!done) { |
| 3551 | ret = ptr; |
| 3552 | } else if (ret + done != ptr) { |
| 3553 | break; |
| 3554 | } |
| 3555 | |
| 3556 | len -= l; |
| 3557 | addr += l; |
| 3558 | done += l; |
| 3559 | } |
| 3560 | *plen = done; |
| 3561 | return ret; |
| 3562 | } |
| 3563 | |
| 3564 | /* Unmaps a memory region previously mapped by cpu_physical_memory_map(). |
| 3565 | * Will also mark the memory as dirty if is_write == 1. access_len gives |
| 3566 | * the amount of memory that was actually read or written by the caller. |
| 3567 | */ |
| 3568 | void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, |
| 3569 | int is_write, target_phys_addr_t access_len) |
| 3570 | { |
| 3571 | if (buffer != bounce.buffer) { |
| 3572 | if (is_write) { |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 3573 | ram_addr_t addr1 = qemu_ram_addr_from_host_nofail(buffer); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3574 | while (access_len) { |
| 3575 | unsigned l; |
| 3576 | l = TARGET_PAGE_SIZE; |
| 3577 | if (l > access_len) |
| 3578 | l = access_len; |
Pete Delaney | d09d766 | 2013-03-28 19:53:13 -0700 | [diff] [blame] | 3579 | invalidate_and_set_dirty(addr1, l); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3580 | addr1 += l; |
| 3581 | access_len -= l; |
| 3582 | } |
| 3583 | } |
| 3584 | return; |
| 3585 | } |
| 3586 | if (is_write) { |
| 3587 | cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len); |
| 3588 | } |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 3589 | qemu_vfree(bounce.buffer); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3590 | bounce.buffer = NULL; |
| 3591 | cpu_notify_map_clients(); |
| 3592 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3593 | |
| 3594 | /* warning: addr must be aligned */ |
| 3595 | uint32_t ldl_phys(target_phys_addr_t addr) |
| 3596 | { |
| 3597 | int io_index; |
| 3598 | uint8_t *ptr; |
| 3599 | uint32_t val; |
| 3600 | unsigned long pd; |
| 3601 | PhysPageDesc *p; |
| 3602 | |
| 3603 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3604 | if (!p) { |
| 3605 | pd = IO_MEM_UNASSIGNED; |
| 3606 | } else { |
| 3607 | pd = p->phys_offset; |
| 3608 | } |
| 3609 | |
| 3610 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && |
| 3611 | !(pd & IO_MEM_ROMD)) { |
| 3612 | /* I/O case */ |
| 3613 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3614 | if (p) |
| 3615 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3616 | val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr); |
| 3617 | } else { |
| 3618 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3619 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3620 | (addr & ~TARGET_PAGE_MASK); |
| 3621 | val = ldl_p(ptr); |
| 3622 | } |
| 3623 | return val; |
| 3624 | } |
| 3625 | |
| 3626 | /* warning: addr must be aligned */ |
| 3627 | uint64_t ldq_phys(target_phys_addr_t addr) |
| 3628 | { |
| 3629 | int io_index; |
| 3630 | uint8_t *ptr; |
| 3631 | uint64_t val; |
| 3632 | unsigned long pd; |
| 3633 | PhysPageDesc *p; |
| 3634 | |
| 3635 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3636 | if (!p) { |
| 3637 | pd = IO_MEM_UNASSIGNED; |
| 3638 | } else { |
| 3639 | pd = p->phys_offset; |
| 3640 | } |
| 3641 | |
| 3642 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && |
| 3643 | !(pd & IO_MEM_ROMD)) { |
| 3644 | /* I/O case */ |
| 3645 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3646 | if (p) |
| 3647 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3648 | #ifdef TARGET_WORDS_BIGENDIAN |
| 3649 | val = (uint64_t)io_mem_read[io_index][2](io_mem_opaque[io_index], addr) << 32; |
| 3650 | val |= io_mem_read[io_index][2](io_mem_opaque[io_index], addr + 4); |
| 3651 | #else |
| 3652 | val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr); |
| 3653 | val |= (uint64_t)io_mem_read[io_index][2](io_mem_opaque[io_index], addr + 4) << 32; |
| 3654 | #endif |
| 3655 | } else { |
| 3656 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3657 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3658 | (addr & ~TARGET_PAGE_MASK); |
| 3659 | val = ldq_p(ptr); |
| 3660 | } |
| 3661 | return val; |
| 3662 | } |
| 3663 | |
| 3664 | /* XXX: optimize */ |
| 3665 | uint32_t ldub_phys(target_phys_addr_t addr) |
| 3666 | { |
| 3667 | uint8_t val; |
| 3668 | cpu_physical_memory_read(addr, &val, 1); |
| 3669 | return val; |
| 3670 | } |
| 3671 | |
| 3672 | /* XXX: optimize */ |
| 3673 | uint32_t lduw_phys(target_phys_addr_t addr) |
| 3674 | { |
| 3675 | uint16_t val; |
| 3676 | cpu_physical_memory_read(addr, (uint8_t *)&val, 2); |
| 3677 | return tswap16(val); |
| 3678 | } |
| 3679 | |
| 3680 | /* warning: addr must be aligned. The ram page is not masked as dirty |
| 3681 | and the code inside is not invalidated. It is useful if the dirty |
| 3682 | bits are used to track modified PTEs */ |
| 3683 | void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val) |
| 3684 | { |
| 3685 | int io_index; |
| 3686 | uint8_t *ptr; |
| 3687 | unsigned long pd; |
| 3688 | PhysPageDesc *p; |
| 3689 | |
| 3690 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3691 | if (!p) { |
| 3692 | pd = IO_MEM_UNASSIGNED; |
| 3693 | } else { |
| 3694 | pd = p->phys_offset; |
| 3695 | } |
| 3696 | |
| 3697 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3698 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3699 | if (p) |
| 3700 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3701 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val); |
| 3702 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3703 | unsigned long addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3704 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3705 | stl_p(ptr, val); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3706 | |
| 3707 | if (unlikely(in_migration)) { |
| 3708 | if (!cpu_physical_memory_is_dirty(addr1)) { |
| 3709 | /* invalidate code */ |
| 3710 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); |
| 3711 | /* set dirty bit */ |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 3712 | cpu_physical_memory_set_dirty_flags( |
| 3713 | addr1, (0xff & ~CODE_DIRTY_FLAG)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3714 | } |
| 3715 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3716 | } |
| 3717 | } |
| 3718 | |
| 3719 | void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val) |
| 3720 | { |
| 3721 | int io_index; |
| 3722 | uint8_t *ptr; |
| 3723 | unsigned long pd; |
| 3724 | PhysPageDesc *p; |
| 3725 | |
| 3726 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3727 | if (!p) { |
| 3728 | pd = IO_MEM_UNASSIGNED; |
| 3729 | } else { |
| 3730 | pd = p->phys_offset; |
| 3731 | } |
| 3732 | |
| 3733 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3734 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3735 | if (p) |
| 3736 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3737 | #ifdef TARGET_WORDS_BIGENDIAN |
| 3738 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val >> 32); |
| 3739 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr + 4, val); |
| 3740 | #else |
| 3741 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val); |
| 3742 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr + 4, val >> 32); |
| 3743 | #endif |
| 3744 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3745 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3746 | (addr & ~TARGET_PAGE_MASK); |
| 3747 | stq_p(ptr, val); |
| 3748 | } |
| 3749 | } |
| 3750 | |
| 3751 | /* warning: addr must be aligned */ |
| 3752 | void stl_phys(target_phys_addr_t addr, uint32_t val) |
| 3753 | { |
| 3754 | int io_index; |
| 3755 | uint8_t *ptr; |
| 3756 | unsigned long pd; |
| 3757 | PhysPageDesc *p; |
| 3758 | |
| 3759 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3760 | if (!p) { |
| 3761 | pd = IO_MEM_UNASSIGNED; |
| 3762 | } else { |
| 3763 | pd = p->phys_offset; |
| 3764 | } |
| 3765 | |
| 3766 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3767 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3768 | if (p) |
| 3769 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3770 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val); |
| 3771 | } else { |
| 3772 | unsigned long addr1; |
| 3773 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3774 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3775 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3776 | stl_p(ptr, val); |
Pete Delaney | d09d766 | 2013-03-28 19:53:13 -0700 | [diff] [blame] | 3777 | invalidate_and_set_dirty(addr1, 4); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3778 | } |
| 3779 | } |
| 3780 | |
| 3781 | /* XXX: optimize */ |
| 3782 | void stb_phys(target_phys_addr_t addr, uint32_t val) |
| 3783 | { |
| 3784 | uint8_t v = val; |
| 3785 | cpu_physical_memory_write(addr, &v, 1); |
| 3786 | } |
| 3787 | |
| 3788 | /* XXX: optimize */ |
| 3789 | void stw_phys(target_phys_addr_t addr, uint32_t val) |
| 3790 | { |
| 3791 | uint16_t v = tswap16(val); |
| 3792 | cpu_physical_memory_write(addr, (const uint8_t *)&v, 2); |
| 3793 | } |
| 3794 | |
| 3795 | /* XXX: optimize */ |
| 3796 | void stq_phys(target_phys_addr_t addr, uint64_t val) |
| 3797 | { |
| 3798 | val = tswap64(val); |
| 3799 | cpu_physical_memory_write(addr, (const uint8_t *)&val, 8); |
| 3800 | } |
| 3801 | |
| 3802 | #endif |
| 3803 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3804 | /* virtual memory access for debug (includes writing to ROM) */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3805 | int cpu_memory_rw_debug(CPUState *env, target_ulong addr, |
| 3806 | uint8_t *buf, int len, int is_write) |
| 3807 | { |
| 3808 | int l; |
| 3809 | target_phys_addr_t phys_addr; |
| 3810 | target_ulong page; |
| 3811 | |
| 3812 | while (len > 0) { |
| 3813 | page = addr & TARGET_PAGE_MASK; |
| 3814 | phys_addr = cpu_get_phys_page_debug(env, page); |
| 3815 | /* if no physical page mapped, return an error */ |
| 3816 | if (phys_addr == -1) |
| 3817 | return -1; |
| 3818 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3819 | if (l > len) |
| 3820 | l = len; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3821 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
| 3822 | #if !defined(CONFIG_USER_ONLY) |
| 3823 | if (is_write) |
| 3824 | cpu_physical_memory_write_rom(phys_addr, buf, l); |
| 3825 | else |
| 3826 | #endif |
| 3827 | cpu_physical_memory_rw(phys_addr, buf, l, is_write); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3828 | len -= l; |
| 3829 | buf += l; |
| 3830 | addr += l; |
| 3831 | } |
| 3832 | return 0; |
| 3833 | } |
| 3834 | |
| 3835 | /* in deterministic execution mode, instructions doing device I/Os |
| 3836 | must be at the end of the TB */ |
| 3837 | void cpu_io_recompile(CPUState *env, void *retaddr) |
| 3838 | { |
| 3839 | TranslationBlock *tb; |
| 3840 | uint32_t n, cflags; |
| 3841 | target_ulong pc, cs_base; |
| 3842 | uint64_t flags; |
| 3843 | |
| 3844 | tb = tb_find_pc((unsigned long)retaddr); |
| 3845 | if (!tb) { |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 3846 | cpu_abort(env, "cpu_io_recompile: could not find TB for pc=%p", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3847 | retaddr); |
| 3848 | } |
| 3849 | n = env->icount_decr.u16.low + tb->icount; |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 3850 | cpu_restore_state(tb, env, (unsigned long)retaddr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3851 | /* Calculate how many instructions had been executed before the fault |
| 3852 | occurred. */ |
| 3853 | n = n - env->icount_decr.u16.low; |
| 3854 | /* Generate a new TB ending on the I/O insn. */ |
| 3855 | n++; |
| 3856 | /* On MIPS and SH, delay slot instructions can only be restarted if |
| 3857 | they were already the first instruction in the TB. If this is not |
| 3858 | the first instruction in a TB then re-execute the preceding |
| 3859 | branch. */ |
| 3860 | #if defined(TARGET_MIPS) |
| 3861 | if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) { |
| 3862 | env->active_tc.PC -= 4; |
| 3863 | env->icount_decr.u16.low++; |
| 3864 | env->hflags &= ~MIPS_HFLAG_BMASK; |
| 3865 | } |
| 3866 | #elif defined(TARGET_SH4) |
| 3867 | if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0 |
| 3868 | && n > 1) { |
| 3869 | env->pc -= 2; |
| 3870 | env->icount_decr.u16.low++; |
| 3871 | env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL); |
| 3872 | } |
| 3873 | #endif |
| 3874 | /* This should never happen. */ |
| 3875 | if (n > CF_COUNT_MASK) |
| 3876 | cpu_abort(env, "TB too big during recompile"); |
| 3877 | |
| 3878 | cflags = n | CF_LAST_IO; |
| 3879 | pc = tb->pc; |
| 3880 | cs_base = tb->cs_base; |
| 3881 | flags = tb->flags; |
| 3882 | tb_phys_invalidate(tb, -1); |
| 3883 | /* FIXME: In theory this could raise an exception. In practice |
| 3884 | we have already translated the block once so it's probably ok. */ |
| 3885 | tb_gen_code(env, pc, cs_base, flags, cflags); |
| 3886 | /* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not |
| 3887 | the first in the TB) then we end up generating a whole new TB and |
| 3888 | repeating the fault, which is horribly inefficient. |
| 3889 | Better would be to execute just this insn uncached, or generate a |
| 3890 | second new TB. */ |
| 3891 | cpu_resume_from_signal(env, NULL); |
| 3892 | } |
| 3893 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3894 | #if !defined(CONFIG_USER_ONLY) |
| 3895 | |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 3896 | void dump_exec_info(FILE *f, fprintf_function cpu_fprintf) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3897 | { |
| 3898 | int i, target_code_size, max_target_code_size; |
| 3899 | int direct_jmp_count, direct_jmp2_count, cross_page; |
| 3900 | TranslationBlock *tb; |
| 3901 | |
| 3902 | target_code_size = 0; |
| 3903 | max_target_code_size = 0; |
| 3904 | cross_page = 0; |
| 3905 | direct_jmp_count = 0; |
| 3906 | direct_jmp2_count = 0; |
| 3907 | for(i = 0; i < nb_tbs; i++) { |
| 3908 | tb = &tbs[i]; |
| 3909 | target_code_size += tb->size; |
| 3910 | if (tb->size > max_target_code_size) |
| 3911 | max_target_code_size = tb->size; |
| 3912 | if (tb->page_addr[1] != -1) |
| 3913 | cross_page++; |
| 3914 | if (tb->tb_next_offset[0] != 0xffff) { |
| 3915 | direct_jmp_count++; |
| 3916 | if (tb->tb_next_offset[1] != 0xffff) { |
| 3917 | direct_jmp2_count++; |
| 3918 | } |
| 3919 | } |
| 3920 | } |
| 3921 | /* XXX: avoid using doubles ? */ |
| 3922 | cpu_fprintf(f, "Translation buffer state:\n"); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 3923 | cpu_fprintf(f, "gen code size %td/%ld\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3924 | code_gen_ptr - code_gen_buffer, code_gen_buffer_max_size); |
David 'Digit' Turner | f645f7d | 2011-05-11 00:44:05 +0200 | [diff] [blame] | 3925 | cpu_fprintf(f, "TB count %d/%d\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3926 | nb_tbs, code_gen_max_blocks); |
| 3927 | cpu_fprintf(f, "TB avg target size %d max=%d bytes\n", |
| 3928 | nb_tbs ? target_code_size / nb_tbs : 0, |
| 3929 | max_target_code_size); |
David 'Digit' Turner | 280afa0 | 2011-05-11 17:37:44 +0200 | [diff] [blame] | 3930 | cpu_fprintf(f, "TB avg host size %td bytes (expansion ratio: %0.1f)\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3931 | nb_tbs ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0, |
| 3932 | target_code_size ? (double) (code_gen_ptr - code_gen_buffer) / target_code_size : 0); |
| 3933 | cpu_fprintf(f, "cross page TB count %d (%d%%)\n", |
| 3934 | cross_page, |
| 3935 | nb_tbs ? (cross_page * 100) / nb_tbs : 0); |
| 3936 | cpu_fprintf(f, "direct jump count %d (%d%%) (2 jumps=%d %d%%)\n", |
| 3937 | direct_jmp_count, |
| 3938 | nb_tbs ? (direct_jmp_count * 100) / nb_tbs : 0, |
| 3939 | direct_jmp2_count, |
| 3940 | nb_tbs ? (direct_jmp2_count * 100) / nb_tbs : 0); |
| 3941 | cpu_fprintf(f, "\nStatistics:\n"); |
| 3942 | cpu_fprintf(f, "TB flush count %d\n", tb_flush_count); |
| 3943 | cpu_fprintf(f, "TB invalidate count %d\n", tb_phys_invalidate_count); |
| 3944 | cpu_fprintf(f, "TLB flush count %d\n", tlb_flush_count); |
| 3945 | tcg_dump_info(f, cpu_fprintf); |
| 3946 | } |
| 3947 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3948 | #define MMUSUFFIX _cmmu |
| 3949 | #define GETPC() NULL |
| 3950 | #define env cpu_single_env |
| 3951 | #define SOFTMMU_CODE_ACCESS |
| 3952 | |
| 3953 | #define SHIFT 0 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 3954 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3955 | |
| 3956 | #define SHIFT 1 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 3957 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3958 | |
| 3959 | #define SHIFT 2 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 3960 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3961 | |
| 3962 | #define SHIFT 3 |
David 'Digit' Turner | 852088c | 2013-12-14 23:04:12 +0100 | [diff] [blame] | 3963 | #include "exec/softmmu_template.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3964 | |
| 3965 | #undef env |
| 3966 | |
| 3967 | #endif |