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" |
| 36 | #include "exec-all.h" |
| 37 | #include "qemu-common.h" |
| 38 | #include "tcg.h" |
| 39 | #include "hw/hw.h" |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 40 | #include "osdep.h" |
| 41 | #include "kvm.h" |
David Turner | 6a9ef17 | 2010-09-09 22:54:36 +0200 | [diff] [blame] | 42 | #include "qemu-timer.h" |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 43 | #if defined(CONFIG_USER_ONLY) |
| 44 | #include <qemu.h> |
| 45 | #endif |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 46 | #ifdef CONFIG_MEMCHECK |
| 47 | #include "memcheck/memcheck_api.h" |
| 48 | #endif // CONFIG_MEMCHECK |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 49 | |
| 50 | //#define DEBUG_TB_INVALIDATE |
| 51 | //#define DEBUG_FLUSH |
| 52 | //#define DEBUG_TLB |
| 53 | //#define DEBUG_UNASSIGNED |
| 54 | |
| 55 | /* make various TB consistency checks */ |
| 56 | //#define DEBUG_TB_CHECK |
| 57 | //#define DEBUG_TLB_CHECK |
| 58 | |
| 59 | //#define DEBUG_IOPORT |
| 60 | //#define DEBUG_SUBPAGE |
| 61 | |
| 62 | #if !defined(CONFIG_USER_ONLY) |
| 63 | /* TB consistency checks only implemented for usermode emulation. */ |
| 64 | #undef DEBUG_TB_CHECK |
| 65 | #endif |
| 66 | |
| 67 | #define SMC_BITMAP_USE_THRESHOLD 10 |
| 68 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 69 | #if defined(TARGET_SPARC64) |
| 70 | #define TARGET_PHYS_ADDR_SPACE_BITS 41 |
| 71 | #elif defined(TARGET_SPARC) |
| 72 | #define TARGET_PHYS_ADDR_SPACE_BITS 36 |
| 73 | #elif defined(TARGET_ALPHA) |
| 74 | #define TARGET_PHYS_ADDR_SPACE_BITS 42 |
| 75 | #define TARGET_VIRT_ADDR_SPACE_BITS 42 |
| 76 | #elif defined(TARGET_PPC64) |
| 77 | #define TARGET_PHYS_ADDR_SPACE_BITS 42 |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 78 | #elif defined(TARGET_X86_64) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 79 | #define TARGET_PHYS_ADDR_SPACE_BITS 42 |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 80 | #elif defined(TARGET_I386) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 81 | #define TARGET_PHYS_ADDR_SPACE_BITS 36 |
| 82 | #else |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 83 | #define TARGET_PHYS_ADDR_SPACE_BITS 32 |
| 84 | #endif |
| 85 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 86 | static TranslationBlock *tbs; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 87 | int code_gen_max_blocks; |
| 88 | TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 89 | static int nb_tbs; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 90 | /* any access to the tbs or the page table must use this lock */ |
| 91 | spinlock_t tb_lock = SPIN_LOCK_UNLOCKED; |
| 92 | |
| 93 | #if defined(__arm__) || defined(__sparc_v9__) |
| 94 | /* The prologue must be reachable with a direct jump. ARM and Sparc64 |
| 95 | have limited branch ranges (possibly also PPC) so place it in a |
| 96 | section close to code segment. */ |
| 97 | #define code_gen_section \ |
| 98 | __attribute__((__section__(".gen_code"))) \ |
| 99 | __attribute__((aligned (32))) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 100 | #elif defined(_WIN32) |
| 101 | /* Maximum alignment for Win32 is 16. */ |
| 102 | #define code_gen_section \ |
| 103 | __attribute__((aligned (16))) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 104 | #else |
| 105 | #define code_gen_section \ |
| 106 | __attribute__((aligned (32))) |
| 107 | #endif |
| 108 | |
| 109 | uint8_t code_gen_prologue[1024] code_gen_section; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 110 | static uint8_t *code_gen_buffer; |
| 111 | static unsigned long code_gen_buffer_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 112 | /* threshold to flush the translated code buffer */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 113 | static unsigned long code_gen_buffer_max_size; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 114 | uint8_t *code_gen_ptr; |
| 115 | |
| 116 | #if !defined(CONFIG_USER_ONLY) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 117 | int phys_ram_fd; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 118 | uint8_t *phys_ram_dirty; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 119 | static int in_migration; |
| 120 | |
| 121 | typedef struct RAMBlock { |
| 122 | uint8_t *host; |
| 123 | ram_addr_t offset; |
| 124 | ram_addr_t length; |
| 125 | struct RAMBlock *next; |
| 126 | } RAMBlock; |
| 127 | |
| 128 | static RAMBlock *ram_blocks; |
| 129 | /* TODO: When we implement (and use) ram deallocation (e.g. for hotplug) |
| 130 | then we can no longer assume contiguous ram offsets, and external uses |
| 131 | of this variable will break. */ |
| 132 | ram_addr_t last_ram_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 133 | #endif |
| 134 | |
| 135 | CPUState *first_cpu; |
| 136 | /* current CPU in the current thread. It is only valid inside |
| 137 | cpu_exec() */ |
| 138 | CPUState *cpu_single_env; |
| 139 | /* 0 = Do not count executed instructions. |
| 140 | 1 = Precise instruction counting. |
| 141 | 2 = Adaptive rate instruction counting. */ |
| 142 | int use_icount = 0; |
| 143 | /* Current instruction counter. While executing translated code this may |
| 144 | include some instructions that have not yet been executed. */ |
| 145 | int64_t qemu_icount; |
| 146 | |
| 147 | typedef struct PageDesc { |
| 148 | /* list of TBs intersecting this ram page */ |
| 149 | TranslationBlock *first_tb; |
| 150 | /* in order to optimize self modifying code, we count the number |
| 151 | of lookups we do to a given page to use a bitmap */ |
| 152 | unsigned int code_write_count; |
| 153 | uint8_t *code_bitmap; |
| 154 | #if defined(CONFIG_USER_ONLY) |
| 155 | unsigned long flags; |
| 156 | #endif |
| 157 | } PageDesc; |
| 158 | |
| 159 | typedef struct PhysPageDesc { |
| 160 | /* offset in host memory of the page + io_index in the low bits */ |
| 161 | ram_addr_t phys_offset; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 162 | ram_addr_t region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 163 | } PhysPageDesc; |
| 164 | |
| 165 | #define L2_BITS 10 |
| 166 | #if defined(CONFIG_USER_ONLY) && defined(TARGET_VIRT_ADDR_SPACE_BITS) |
| 167 | /* XXX: this is a temporary hack for alpha target. |
| 168 | * In the future, this is to be replaced by a multi-level table |
| 169 | * to actually be able to handle the complete 64 bits address space. |
| 170 | */ |
| 171 | #define L1_BITS (TARGET_VIRT_ADDR_SPACE_BITS - L2_BITS - TARGET_PAGE_BITS) |
| 172 | #else |
| 173 | #define L1_BITS (32 - L2_BITS - TARGET_PAGE_BITS) |
| 174 | #endif |
| 175 | |
| 176 | #define L1_SIZE (1 << L1_BITS) |
| 177 | #define L2_SIZE (1 << L2_BITS) |
| 178 | |
| 179 | unsigned long qemu_real_host_page_size; |
| 180 | unsigned long qemu_host_page_bits; |
| 181 | unsigned long qemu_host_page_size; |
| 182 | unsigned long qemu_host_page_mask; |
| 183 | |
| 184 | /* XXX: for system emulation, it could just be an array */ |
| 185 | static PageDesc *l1_map[L1_SIZE]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 186 | static PhysPageDesc **l1_phys_map; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 187 | |
| 188 | #if !defined(CONFIG_USER_ONLY) |
| 189 | static void io_mem_init(void); |
| 190 | |
| 191 | /* io memory support */ |
| 192 | CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4]; |
| 193 | CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4]; |
| 194 | void *io_mem_opaque[IO_MEM_NB_ENTRIES]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 195 | static char io_mem_used[IO_MEM_NB_ENTRIES]; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 196 | static int io_mem_watch; |
| 197 | #endif |
| 198 | |
| 199 | /* log support */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 200 | #ifdef WIN32 |
| 201 | static const char *logfilename = "qemu.log"; |
| 202 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 203 | static const char *logfilename = "/tmp/qemu.log"; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 204 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 205 | FILE *logfile; |
| 206 | int loglevel; |
| 207 | static int log_append = 0; |
| 208 | |
| 209 | /* statistics */ |
| 210 | static int tlb_flush_count; |
| 211 | static int tb_flush_count; |
| 212 | static int tb_phys_invalidate_count; |
| 213 | |
| 214 | #define SUBPAGE_IDX(addr) ((addr) & ~TARGET_PAGE_MASK) |
| 215 | typedef struct subpage_t { |
| 216 | target_phys_addr_t base; |
| 217 | CPUReadMemoryFunc **mem_read[TARGET_PAGE_SIZE][4]; |
| 218 | CPUWriteMemoryFunc **mem_write[TARGET_PAGE_SIZE][4]; |
| 219 | void *opaque[TARGET_PAGE_SIZE][2][4]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 220 | 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] | 221 | } subpage_t; |
| 222 | |
| 223 | #ifdef _WIN32 |
| 224 | static void map_exec(void *addr, long size) |
| 225 | { |
| 226 | DWORD old_protect; |
| 227 | VirtualProtect(addr, size, |
| 228 | PAGE_EXECUTE_READWRITE, &old_protect); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 229 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 230 | } |
| 231 | #else |
| 232 | static void map_exec(void *addr, long size) |
| 233 | { |
| 234 | unsigned long start, end, page_size; |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 235 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 236 | page_size = getpagesize(); |
| 237 | start = (unsigned long)addr; |
| 238 | start &= ~(page_size - 1); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 239 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 240 | end = (unsigned long)addr + size; |
| 241 | end += page_size - 1; |
| 242 | end &= ~(page_size - 1); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 243 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 244 | mprotect((void *)start, end - start, |
| 245 | PROT_READ | PROT_WRITE | PROT_EXEC); |
| 246 | } |
| 247 | #endif |
| 248 | |
| 249 | static void page_init(void) |
| 250 | { |
| 251 | /* NOTE: we can always suppose that qemu_host_page_size >= |
| 252 | TARGET_PAGE_SIZE */ |
| 253 | #ifdef _WIN32 |
| 254 | { |
| 255 | SYSTEM_INFO system_info; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 256 | |
| 257 | GetSystemInfo(&system_info); |
| 258 | qemu_real_host_page_size = system_info.dwPageSize; |
| 259 | } |
| 260 | #else |
| 261 | qemu_real_host_page_size = getpagesize(); |
| 262 | #endif |
| 263 | if (qemu_host_page_size == 0) |
| 264 | qemu_host_page_size = qemu_real_host_page_size; |
| 265 | if (qemu_host_page_size < TARGET_PAGE_SIZE) |
| 266 | qemu_host_page_size = TARGET_PAGE_SIZE; |
| 267 | qemu_host_page_bits = 0; |
| 268 | while ((1 << qemu_host_page_bits) < qemu_host_page_size) |
| 269 | qemu_host_page_bits++; |
| 270 | qemu_host_page_mask = ~(qemu_host_page_size - 1); |
| 271 | l1_phys_map = qemu_vmalloc(L1_SIZE * sizeof(void *)); |
| 272 | memset(l1_phys_map, 0, L1_SIZE * sizeof(void *)); |
| 273 | |
| 274 | #if !defined(_WIN32) && defined(CONFIG_USER_ONLY) |
| 275 | { |
| 276 | long long startaddr, endaddr; |
| 277 | FILE *f; |
| 278 | int n; |
| 279 | |
| 280 | mmap_lock(); |
| 281 | last_brk = (unsigned long)sbrk(0); |
| 282 | f = fopen("/proc/self/maps", "r"); |
| 283 | if (f) { |
| 284 | do { |
| 285 | n = fscanf (f, "%llx-%llx %*[^\n]\n", &startaddr, &endaddr); |
| 286 | if (n == 2) { |
| 287 | startaddr = MIN(startaddr, |
| 288 | (1ULL << TARGET_PHYS_ADDR_SPACE_BITS) - 1); |
| 289 | endaddr = MIN(endaddr, |
| 290 | (1ULL << TARGET_PHYS_ADDR_SPACE_BITS) - 1); |
| 291 | page_set_flags(startaddr & TARGET_PAGE_MASK, |
| 292 | TARGET_PAGE_ALIGN(endaddr), |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 293 | PAGE_RESERVED); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 294 | } |
| 295 | } while (!feof(f)); |
| 296 | fclose(f); |
| 297 | } |
| 298 | mmap_unlock(); |
| 299 | } |
| 300 | #endif |
| 301 | } |
| 302 | |
| 303 | static inline PageDesc **page_l1_map(target_ulong index) |
| 304 | { |
| 305 | #if TARGET_LONG_BITS > 32 |
| 306 | /* Host memory outside guest VM. For 32-bit targets we have already |
| 307 | excluded high addresses. */ |
| 308 | if (index > ((target_ulong)L2_SIZE * L1_SIZE)) |
| 309 | return NULL; |
| 310 | #endif |
| 311 | return &l1_map[index >> L2_BITS]; |
| 312 | } |
| 313 | |
| 314 | static inline PageDesc *page_find_alloc(target_ulong index) |
| 315 | { |
| 316 | PageDesc **lp, *p; |
| 317 | lp = page_l1_map(index); |
| 318 | if (!lp) |
| 319 | return NULL; |
| 320 | |
| 321 | p = *lp; |
| 322 | if (!p) { |
| 323 | /* allocate if not found */ |
| 324 | #if defined(CONFIG_USER_ONLY) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 325 | size_t len = sizeof(PageDesc) * L2_SIZE; |
| 326 | /* Don't use qemu_malloc because it may recurse. */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 327 | p = mmap(NULL, len, PROT_READ | PROT_WRITE, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 328 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| 329 | *lp = p; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 330 | if (h2g_valid(p)) { |
| 331 | unsigned long addr = h2g(p); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 332 | page_set_flags(addr & TARGET_PAGE_MASK, |
| 333 | TARGET_PAGE_ALIGN(addr + len), |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 334 | PAGE_RESERVED); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 335 | } |
| 336 | #else |
| 337 | p = qemu_mallocz(sizeof(PageDesc) * L2_SIZE); |
| 338 | *lp = p; |
| 339 | #endif |
| 340 | } |
| 341 | return p + (index & (L2_SIZE - 1)); |
| 342 | } |
| 343 | |
| 344 | static inline PageDesc *page_find(target_ulong index) |
| 345 | { |
| 346 | PageDesc **lp, *p; |
| 347 | lp = page_l1_map(index); |
| 348 | if (!lp) |
| 349 | return NULL; |
| 350 | |
| 351 | p = *lp; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 352 | if (!p) { |
| 353 | return NULL; |
| 354 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 355 | return p + (index & (L2_SIZE - 1)); |
| 356 | } |
| 357 | |
| 358 | static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc) |
| 359 | { |
| 360 | void **lp, **p; |
| 361 | PhysPageDesc *pd; |
| 362 | |
| 363 | p = (void **)l1_phys_map; |
| 364 | #if TARGET_PHYS_ADDR_SPACE_BITS > 32 |
| 365 | |
| 366 | #if TARGET_PHYS_ADDR_SPACE_BITS > (32 + L1_BITS) |
| 367 | #error unsupported TARGET_PHYS_ADDR_SPACE_BITS |
| 368 | #endif |
| 369 | lp = p + ((index >> (L1_BITS + L2_BITS)) & (L1_SIZE - 1)); |
| 370 | p = *lp; |
| 371 | if (!p) { |
| 372 | /* allocate if not found */ |
| 373 | if (!alloc) |
| 374 | return NULL; |
| 375 | p = qemu_vmalloc(sizeof(void *) * L1_SIZE); |
| 376 | memset(p, 0, sizeof(void *) * L1_SIZE); |
| 377 | *lp = p; |
| 378 | } |
| 379 | #endif |
| 380 | lp = p + ((index >> L2_BITS) & (L1_SIZE - 1)); |
| 381 | pd = *lp; |
| 382 | if (!pd) { |
| 383 | int i; |
| 384 | /* allocate if not found */ |
| 385 | if (!alloc) |
| 386 | return NULL; |
| 387 | pd = qemu_vmalloc(sizeof(PhysPageDesc) * L2_SIZE); |
| 388 | *lp = pd; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 389 | for (i = 0; i < L2_SIZE; i++) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 390 | pd[i].phys_offset = IO_MEM_UNASSIGNED; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 391 | pd[i].region_offset = (index + i) << TARGET_PAGE_BITS; |
| 392 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 393 | } |
| 394 | return ((PhysPageDesc *)pd) + (index & (L2_SIZE - 1)); |
| 395 | } |
| 396 | |
| 397 | static inline PhysPageDesc *phys_page_find(target_phys_addr_t index) |
| 398 | { |
| 399 | return phys_page_find_alloc(index, 0); |
| 400 | } |
| 401 | |
| 402 | #if !defined(CONFIG_USER_ONLY) |
| 403 | static void tlb_protect_code(ram_addr_t ram_addr); |
| 404 | static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr, |
| 405 | target_ulong vaddr); |
| 406 | #define mmap_lock() do { } while(0) |
| 407 | #define mmap_unlock() do { } while(0) |
| 408 | #endif |
| 409 | |
| 410 | #define DEFAULT_CODE_GEN_BUFFER_SIZE (32 * 1024 * 1024) |
| 411 | |
| 412 | #if defined(CONFIG_USER_ONLY) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 413 | /* 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] | 414 | user mode. It will change when a dedicated libc will be used */ |
| 415 | #define USE_STATIC_CODE_GEN_BUFFER |
| 416 | #endif |
| 417 | |
| 418 | #ifdef USE_STATIC_CODE_GEN_BUFFER |
| 419 | static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE]; |
| 420 | #endif |
| 421 | |
| 422 | static void code_gen_alloc(unsigned long tb_size) |
| 423 | { |
| 424 | #ifdef USE_STATIC_CODE_GEN_BUFFER |
| 425 | code_gen_buffer = static_code_gen_buffer; |
| 426 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; |
| 427 | map_exec(code_gen_buffer, code_gen_buffer_size); |
| 428 | #else |
| 429 | code_gen_buffer_size = tb_size; |
| 430 | if (code_gen_buffer_size == 0) { |
| 431 | #if defined(CONFIG_USER_ONLY) |
| 432 | /* in user mode, phys_ram_size is not meaningful */ |
| 433 | code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE; |
| 434 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 435 | /* XXX: needs adjustments */ |
| 436 | code_gen_buffer_size = (unsigned long)(ram_size / 4); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 437 | #endif |
| 438 | } |
| 439 | if (code_gen_buffer_size < MIN_CODE_GEN_BUFFER_SIZE) |
| 440 | code_gen_buffer_size = MIN_CODE_GEN_BUFFER_SIZE; |
| 441 | /* The code gen buffer location may have constraints depending on |
| 442 | the host cpu and OS */ |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 443 | #if defined(__linux__) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 444 | { |
| 445 | int flags; |
| 446 | void *start = NULL; |
| 447 | |
| 448 | flags = MAP_PRIVATE | MAP_ANONYMOUS; |
| 449 | #if defined(__x86_64__) |
| 450 | flags |= MAP_32BIT; |
| 451 | /* Cannot map more than that */ |
| 452 | if (code_gen_buffer_size > (800 * 1024 * 1024)) |
| 453 | code_gen_buffer_size = (800 * 1024 * 1024); |
| 454 | #elif defined(__sparc_v9__) |
| 455 | // Map the buffer below 2G, so we can use direct calls and branches |
| 456 | flags |= MAP_FIXED; |
| 457 | start = (void *) 0x60000000UL; |
| 458 | if (code_gen_buffer_size > (512 * 1024 * 1024)) |
| 459 | code_gen_buffer_size = (512 * 1024 * 1024); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 460 | #elif defined(__arm__) |
| 461 | /* Map the buffer below 32M, so we can use direct calls and branches */ |
| 462 | flags |= MAP_FIXED; |
| 463 | start = (void *) 0x01000000UL; |
| 464 | if (code_gen_buffer_size > 16 * 1024 * 1024) |
| 465 | code_gen_buffer_size = 16 * 1024 * 1024; |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 466 | #elif defined(__s390x__) |
| 467 | /* Map the buffer so that we can use direct calls and branches. */ |
| 468 | /* We have a +- 4GB range on the branches; leave some slop. */ |
| 469 | if (code_gen_buffer_size > (3ul * 1024 * 1024 * 1024)) { |
| 470 | code_gen_buffer_size = 3ul * 1024 * 1024 * 1024; |
| 471 | } |
| 472 | start = (void *)0x90000000UL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 473 | #endif |
| 474 | code_gen_buffer = mmap(start, code_gen_buffer_size, |
| 475 | PROT_WRITE | PROT_READ | PROT_EXEC, |
| 476 | flags, -1, 0); |
| 477 | if (code_gen_buffer == MAP_FAILED) { |
| 478 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); |
| 479 | exit(1); |
| 480 | } |
| 481 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 482 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 483 | { |
| 484 | int flags; |
| 485 | void *addr = NULL; |
| 486 | flags = MAP_PRIVATE | MAP_ANONYMOUS; |
| 487 | #if defined(__x86_64__) |
| 488 | /* FreeBSD doesn't have MAP_32BIT, use MAP_FIXED and assume |
| 489 | * 0x40000000 is free */ |
| 490 | flags |= MAP_FIXED; |
| 491 | addr = (void *)0x40000000; |
| 492 | /* Cannot map more than that */ |
| 493 | if (code_gen_buffer_size > (800 * 1024 * 1024)) |
| 494 | code_gen_buffer_size = (800 * 1024 * 1024); |
| 495 | #endif |
| 496 | code_gen_buffer = mmap(addr, code_gen_buffer_size, |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 497 | PROT_WRITE | PROT_READ | PROT_EXEC, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 498 | flags, -1, 0); |
| 499 | if (code_gen_buffer == MAP_FAILED) { |
| 500 | fprintf(stderr, "Could not allocate dynamic translator buffer\n"); |
| 501 | exit(1); |
| 502 | } |
| 503 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 504 | #else |
| 505 | code_gen_buffer = qemu_malloc(code_gen_buffer_size); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 506 | map_exec(code_gen_buffer, code_gen_buffer_size); |
| 507 | #endif |
| 508 | #endif /* !USE_STATIC_CODE_GEN_BUFFER */ |
| 509 | map_exec(code_gen_prologue, sizeof(code_gen_prologue)); |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 510 | code_gen_buffer_max_size = code_gen_buffer_size - |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 511 | code_gen_max_block_size(); |
| 512 | code_gen_max_blocks = code_gen_buffer_size / CODE_GEN_AVG_BLOCK_SIZE; |
| 513 | tbs = qemu_malloc(code_gen_max_blocks * sizeof(TranslationBlock)); |
| 514 | } |
| 515 | |
| 516 | /* Must be called before using the QEMU cpus. 'tb_size' is the size |
| 517 | (in bytes) allocated to the translation buffer. Zero means default |
| 518 | size. */ |
| 519 | void cpu_exec_init_all(unsigned long tb_size) |
| 520 | { |
| 521 | cpu_gen_init(); |
| 522 | code_gen_alloc(tb_size); |
| 523 | code_gen_ptr = code_gen_buffer; |
| 524 | page_init(); |
| 525 | #if !defined(CONFIG_USER_ONLY) |
| 526 | io_mem_init(); |
| 527 | #endif |
| 528 | } |
| 529 | |
| 530 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
| 531 | |
| 532 | #define CPU_COMMON_SAVE_VERSION 1 |
| 533 | |
| 534 | static void cpu_common_save(QEMUFile *f, void *opaque) |
| 535 | { |
| 536 | CPUState *env = opaque; |
| 537 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 538 | cpu_synchronize_state(env, 0); |
| 539 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 540 | qemu_put_be32s(f, &env->halted); |
| 541 | qemu_put_be32s(f, &env->interrupt_request); |
| 542 | } |
| 543 | |
| 544 | static int cpu_common_load(QEMUFile *f, void *opaque, int version_id) |
| 545 | { |
| 546 | CPUState *env = opaque; |
| 547 | |
| 548 | if (version_id != CPU_COMMON_SAVE_VERSION) |
| 549 | return -EINVAL; |
| 550 | |
| 551 | qemu_get_be32s(f, &env->halted); |
| 552 | qemu_get_be32s(f, &env->interrupt_request); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 553 | /* 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the |
| 554 | version_id is increased. */ |
| 555 | env->interrupt_request &= ~0x01; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 556 | tlb_flush(env, 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 557 | cpu_synchronize_state(env, 1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 558 | |
| 559 | return 0; |
| 560 | } |
| 561 | #endif |
| 562 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 563 | CPUState *qemu_get_cpu(int cpu) |
| 564 | { |
| 565 | CPUState *env = first_cpu; |
| 566 | |
| 567 | while (env) { |
| 568 | if (env->cpu_index == cpu) |
| 569 | break; |
| 570 | env = env->next_cpu; |
| 571 | } |
| 572 | |
| 573 | return env; |
| 574 | } |
| 575 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 576 | void cpu_exec_init(CPUState *env) |
| 577 | { |
| 578 | CPUState **penv; |
| 579 | int cpu_index; |
| 580 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 581 | #if defined(CONFIG_USER_ONLY) |
| 582 | cpu_list_lock(); |
| 583 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 584 | env->next_cpu = NULL; |
| 585 | penv = &first_cpu; |
| 586 | cpu_index = 0; |
| 587 | while (*penv != NULL) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 588 | penv = &(*penv)->next_cpu; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 589 | cpu_index++; |
| 590 | } |
| 591 | env->cpu_index = cpu_index; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 592 | env->numa_node = 0; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 593 | QTAILQ_INIT(&env->breakpoints); |
| 594 | QTAILQ_INIT(&env->watchpoints); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 595 | *penv = env; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 596 | #if defined(CONFIG_USER_ONLY) |
| 597 | cpu_list_unlock(); |
| 598 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 599 | #if defined(CPU_SAVE_VERSION) && !defined(CONFIG_USER_ONLY) |
| 600 | register_savevm("cpu_common", cpu_index, CPU_COMMON_SAVE_VERSION, |
| 601 | cpu_common_save, cpu_common_load, env); |
| 602 | register_savevm("cpu", cpu_index, CPU_SAVE_VERSION, |
| 603 | cpu_save, cpu_load, env); |
| 604 | #endif |
| 605 | } |
| 606 | |
| 607 | static inline void invalidate_page_bitmap(PageDesc *p) |
| 608 | { |
| 609 | if (p->code_bitmap) { |
| 610 | qemu_free(p->code_bitmap); |
| 611 | p->code_bitmap = NULL; |
| 612 | } |
| 613 | p->code_write_count = 0; |
| 614 | } |
| 615 | |
| 616 | /* set to NULL all the 'first_tb' fields in all PageDescs */ |
| 617 | static void page_flush_tb(void) |
| 618 | { |
| 619 | int i, j; |
| 620 | PageDesc *p; |
| 621 | |
| 622 | for(i = 0; i < L1_SIZE; i++) { |
| 623 | p = l1_map[i]; |
| 624 | if (p) { |
| 625 | for(j = 0; j < L2_SIZE; j++) { |
| 626 | p->first_tb = NULL; |
| 627 | invalidate_page_bitmap(p); |
| 628 | p++; |
| 629 | } |
| 630 | } |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | /* flush all the translation blocks */ |
| 635 | /* XXX: tb_flush is currently not thread safe */ |
| 636 | void tb_flush(CPUState *env1) |
| 637 | { |
| 638 | CPUState *env; |
| 639 | #if defined(DEBUG_FLUSH) |
| 640 | printf("qemu: flush code_size=%ld nb_tbs=%d avg_tb_size=%ld\n", |
| 641 | (unsigned long)(code_gen_ptr - code_gen_buffer), |
| 642 | nb_tbs, nb_tbs > 0 ? |
| 643 | ((unsigned long)(code_gen_ptr - code_gen_buffer)) / nb_tbs : 0); |
| 644 | #endif |
| 645 | if ((unsigned long)(code_gen_ptr - code_gen_buffer) > code_gen_buffer_size) |
| 646 | cpu_abort(env1, "Internal error: code buffer overflow\n"); |
| 647 | |
| 648 | nb_tbs = 0; |
| 649 | |
| 650 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 651 | #ifdef CONFIG_MEMCHECK |
| 652 | int tb_to_clean; |
| 653 | for (tb_to_clean = 0; tb_to_clean < TB_JMP_CACHE_SIZE; tb_to_clean++) { |
| 654 | if (env->tb_jmp_cache[tb_to_clean] != NULL && |
| 655 | env->tb_jmp_cache[tb_to_clean]->tpc2gpc != NULL) { |
| 656 | qemu_free(env->tb_jmp_cache[tb_to_clean]->tpc2gpc); |
| 657 | env->tb_jmp_cache[tb_to_clean]->tpc2gpc = NULL; |
| 658 | env->tb_jmp_cache[tb_to_clean]->tpc2gpc_pairs = 0; |
| 659 | } |
| 660 | } |
| 661 | #endif // CONFIG_MEMCHECK |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 662 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); |
| 663 | } |
| 664 | |
| 665 | memset (tb_phys_hash, 0, CODE_GEN_PHYS_HASH_SIZE * sizeof (void *)); |
| 666 | page_flush_tb(); |
| 667 | |
| 668 | code_gen_ptr = code_gen_buffer; |
| 669 | /* XXX: flush processor icache at this point if cache flush is |
| 670 | expensive */ |
| 671 | tb_flush_count++; |
| 672 | } |
| 673 | |
| 674 | #ifdef DEBUG_TB_CHECK |
| 675 | |
| 676 | static void tb_invalidate_check(target_ulong address) |
| 677 | { |
| 678 | TranslationBlock *tb; |
| 679 | int i; |
| 680 | address &= TARGET_PAGE_MASK; |
| 681 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
| 682 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { |
| 683 | if (!(address + TARGET_PAGE_SIZE <= tb->pc || |
| 684 | address >= tb->pc + tb->size)) { |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 685 | printf("ERROR invalidate: address=" TARGET_FMT_lx |
| 686 | " PC=%08lx size=%04x\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 687 | address, (long)tb->pc, tb->size); |
| 688 | } |
| 689 | } |
| 690 | } |
| 691 | } |
| 692 | |
| 693 | /* verify that all the pages have correct rights for code */ |
| 694 | static void tb_page_check(void) |
| 695 | { |
| 696 | TranslationBlock *tb; |
| 697 | int i, flags1, flags2; |
| 698 | |
| 699 | for(i = 0;i < CODE_GEN_PHYS_HASH_SIZE; i++) { |
| 700 | for(tb = tb_phys_hash[i]; tb != NULL; tb = tb->phys_hash_next) { |
| 701 | flags1 = page_get_flags(tb->pc); |
| 702 | flags2 = page_get_flags(tb->pc + tb->size - 1); |
| 703 | if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) { |
| 704 | printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n", |
| 705 | (long)tb->pc, tb->size, flags1, flags2); |
| 706 | } |
| 707 | } |
| 708 | } |
| 709 | } |
| 710 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 711 | #endif |
| 712 | |
| 713 | /* invalidate one TB */ |
| 714 | static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb, |
| 715 | int next_offset) |
| 716 | { |
| 717 | TranslationBlock *tb1; |
| 718 | for(;;) { |
| 719 | tb1 = *ptb; |
| 720 | if (tb1 == tb) { |
| 721 | *ptb = *(TranslationBlock **)((char *)tb1 + next_offset); |
| 722 | break; |
| 723 | } |
| 724 | ptb = (TranslationBlock **)((char *)tb1 + next_offset); |
| 725 | } |
| 726 | } |
| 727 | |
| 728 | static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb) |
| 729 | { |
| 730 | TranslationBlock *tb1; |
| 731 | unsigned int n1; |
| 732 | |
| 733 | for(;;) { |
| 734 | tb1 = *ptb; |
| 735 | n1 = (long)tb1 & 3; |
| 736 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 737 | if (tb1 == tb) { |
| 738 | *ptb = tb1->page_next[n1]; |
| 739 | break; |
| 740 | } |
| 741 | ptb = &tb1->page_next[n1]; |
| 742 | } |
| 743 | } |
| 744 | |
| 745 | static inline void tb_jmp_remove(TranslationBlock *tb, int n) |
| 746 | { |
| 747 | TranslationBlock *tb1, **ptb; |
| 748 | unsigned int n1; |
| 749 | |
| 750 | ptb = &tb->jmp_next[n]; |
| 751 | tb1 = *ptb; |
| 752 | if (tb1) { |
| 753 | /* find tb(n) in circular list */ |
| 754 | for(;;) { |
| 755 | tb1 = *ptb; |
| 756 | n1 = (long)tb1 & 3; |
| 757 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 758 | if (n1 == n && tb1 == tb) |
| 759 | break; |
| 760 | if (n1 == 2) { |
| 761 | ptb = &tb1->jmp_first; |
| 762 | } else { |
| 763 | ptb = &tb1->jmp_next[n1]; |
| 764 | } |
| 765 | } |
| 766 | /* now we can suppress tb(n) from the list */ |
| 767 | *ptb = tb->jmp_next[n]; |
| 768 | |
| 769 | tb->jmp_next[n] = NULL; |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | /* reset the jump entry 'n' of a TB so that it is not chained to |
| 774 | another TB */ |
| 775 | static inline void tb_reset_jump(TranslationBlock *tb, int n) |
| 776 | { |
| 777 | tb_set_jmp_target(tb, n, (unsigned long)(tb->tc_ptr + tb->tb_next_offset[n])); |
| 778 | } |
| 779 | |
| 780 | void tb_phys_invalidate(TranslationBlock *tb, target_ulong page_addr) |
| 781 | { |
| 782 | CPUState *env; |
| 783 | PageDesc *p; |
| 784 | unsigned int h, n1; |
| 785 | target_phys_addr_t phys_pc; |
| 786 | TranslationBlock *tb1, *tb2; |
| 787 | |
| 788 | /* remove the TB from the hash list */ |
| 789 | phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); |
| 790 | h = tb_phys_hash_func(phys_pc); |
| 791 | tb_remove(&tb_phys_hash[h], tb, |
| 792 | offsetof(TranslationBlock, phys_hash_next)); |
| 793 | |
| 794 | /* remove the TB from the page list */ |
| 795 | if (tb->page_addr[0] != page_addr) { |
| 796 | p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS); |
| 797 | tb_page_remove(&p->first_tb, tb); |
| 798 | invalidate_page_bitmap(p); |
| 799 | } |
| 800 | if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) { |
| 801 | p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS); |
| 802 | tb_page_remove(&p->first_tb, tb); |
| 803 | invalidate_page_bitmap(p); |
| 804 | } |
| 805 | |
| 806 | tb_invalidated_flag = 1; |
| 807 | |
| 808 | /* remove the TB from the hash list */ |
| 809 | h = tb_jmp_cache_hash_func(tb->pc); |
| 810 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 811 | if (env->tb_jmp_cache[h] == tb) |
| 812 | env->tb_jmp_cache[h] = NULL; |
| 813 | } |
| 814 | |
| 815 | /* suppress this TB from the two jump lists */ |
| 816 | tb_jmp_remove(tb, 0); |
| 817 | tb_jmp_remove(tb, 1); |
| 818 | |
| 819 | /* suppress any remaining jumps to this TB */ |
| 820 | tb1 = tb->jmp_first; |
| 821 | for(;;) { |
| 822 | n1 = (long)tb1 & 3; |
| 823 | if (n1 == 2) |
| 824 | break; |
| 825 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 826 | tb2 = tb1->jmp_next[n1]; |
| 827 | tb_reset_jump(tb1, n1); |
| 828 | tb1->jmp_next[n1] = NULL; |
| 829 | tb1 = tb2; |
| 830 | } |
| 831 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); /* fail safe */ |
| 832 | |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 833 | #ifdef CONFIG_MEMCHECK |
| 834 | if (tb->tpc2gpc != NULL) { |
| 835 | qemu_free(tb->tpc2gpc); |
| 836 | tb->tpc2gpc = NULL; |
| 837 | tb->tpc2gpc_pairs = 0; |
| 838 | } |
| 839 | #endif // CONFIG_MEMCHECK |
| 840 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 841 | tb_phys_invalidate_count++; |
| 842 | } |
| 843 | |
| 844 | static inline void set_bits(uint8_t *tab, int start, int len) |
| 845 | { |
| 846 | int end, mask, end1; |
| 847 | |
| 848 | end = start + len; |
| 849 | tab += start >> 3; |
| 850 | mask = 0xff << (start & 7); |
| 851 | if ((start & ~7) == (end & ~7)) { |
| 852 | if (start < end) { |
| 853 | mask &= ~(0xff << (end & 7)); |
| 854 | *tab |= mask; |
| 855 | } |
| 856 | } else { |
| 857 | *tab++ |= mask; |
| 858 | start = (start + 8) & ~7; |
| 859 | end1 = end & ~7; |
| 860 | while (start < end1) { |
| 861 | *tab++ = 0xff; |
| 862 | start += 8; |
| 863 | } |
| 864 | if (start < end) { |
| 865 | mask = ~(0xff << (end & 7)); |
| 866 | *tab |= mask; |
| 867 | } |
| 868 | } |
| 869 | } |
| 870 | |
| 871 | static void build_page_bitmap(PageDesc *p) |
| 872 | { |
| 873 | int n, tb_start, tb_end; |
| 874 | TranslationBlock *tb; |
| 875 | |
| 876 | p->code_bitmap = qemu_mallocz(TARGET_PAGE_SIZE / 8); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 877 | |
| 878 | tb = p->first_tb; |
| 879 | while (tb != NULL) { |
| 880 | n = (long)tb & 3; |
| 881 | tb = (TranslationBlock *)((long)tb & ~3); |
| 882 | /* NOTE: this is subtle as a TB may span two physical pages */ |
| 883 | if (n == 0) { |
| 884 | /* NOTE: tb_end may be after the end of the page, but |
| 885 | it is not a problem */ |
| 886 | tb_start = tb->pc & ~TARGET_PAGE_MASK; |
| 887 | tb_end = tb_start + tb->size; |
| 888 | if (tb_end > TARGET_PAGE_SIZE) |
| 889 | tb_end = TARGET_PAGE_SIZE; |
| 890 | } else { |
| 891 | tb_start = 0; |
| 892 | tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); |
| 893 | } |
| 894 | set_bits(p->code_bitmap, tb_start, tb_end - tb_start); |
| 895 | tb = tb->page_next[n]; |
| 896 | } |
| 897 | } |
| 898 | |
| 899 | TranslationBlock *tb_gen_code(CPUState *env, |
| 900 | target_ulong pc, target_ulong cs_base, |
| 901 | int flags, int cflags) |
| 902 | { |
| 903 | TranslationBlock *tb; |
| 904 | uint8_t *tc_ptr; |
| 905 | target_ulong phys_pc, phys_page2, virt_page2; |
| 906 | int code_gen_size; |
| 907 | |
| 908 | phys_pc = get_phys_addr_code(env, pc); |
| 909 | tb = tb_alloc(pc); |
| 910 | if (!tb) { |
| 911 | /* flush must be done */ |
| 912 | tb_flush(env); |
| 913 | /* cannot fail at this point */ |
| 914 | tb = tb_alloc(pc); |
| 915 | /* Don't forget to invalidate previous TB info. */ |
| 916 | tb_invalidated_flag = 1; |
| 917 | } |
| 918 | tc_ptr = code_gen_ptr; |
| 919 | tb->tc_ptr = tc_ptr; |
| 920 | tb->cs_base = cs_base; |
| 921 | tb->flags = flags; |
| 922 | tb->cflags = cflags; |
| 923 | #ifdef CONFIG_TRACE |
| 924 | tb->bb_rec = NULL; |
| 925 | tb->prev_time = 0; |
| 926 | #endif |
| 927 | cpu_gen_code(env, tb, &code_gen_size); |
| 928 | code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); |
| 929 | |
| 930 | /* check next page if needed */ |
| 931 | virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; |
| 932 | phys_page2 = -1; |
| 933 | if ((pc & TARGET_PAGE_MASK) != virt_page2) { |
| 934 | phys_page2 = get_phys_addr_code(env, virt_page2); |
| 935 | } |
| 936 | tb_link_phys(tb, phys_pc, phys_page2); |
| 937 | return tb; |
| 938 | } |
| 939 | |
| 940 | /* invalidate all TBs which intersect with the target physical page |
| 941 | starting in range [start;end[. NOTE: start and end must refer to |
| 942 | the same physical page. 'is_cpu_write_access' should be true if called |
| 943 | from a real cpu write access: the virtual CPU will exit the current |
| 944 | TB if code is modified inside this TB. */ |
| 945 | void tb_invalidate_phys_page_range(target_phys_addr_t start, target_phys_addr_t end, |
| 946 | int is_cpu_write_access) |
| 947 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 948 | TranslationBlock *tb, *tb_next, *saved_tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 949 | CPUState *env = cpu_single_env; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 950 | target_ulong tb_start, tb_end; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 951 | PageDesc *p; |
| 952 | int n; |
| 953 | #ifdef TARGET_HAS_PRECISE_SMC |
| 954 | int current_tb_not_found = is_cpu_write_access; |
| 955 | TranslationBlock *current_tb = NULL; |
| 956 | int current_tb_modified = 0; |
| 957 | target_ulong current_pc = 0; |
| 958 | target_ulong current_cs_base = 0; |
| 959 | int current_flags = 0; |
| 960 | #endif /* TARGET_HAS_PRECISE_SMC */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 961 | |
| 962 | p = page_find(start >> TARGET_PAGE_BITS); |
| 963 | if (!p) |
| 964 | return; |
| 965 | if (!p->code_bitmap && |
| 966 | ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && |
| 967 | is_cpu_write_access) { |
| 968 | /* build code bitmap */ |
| 969 | build_page_bitmap(p); |
| 970 | } |
| 971 | |
| 972 | /* we remove all the TBs in the range [start, end[ */ |
| 973 | /* 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] | 974 | tb = p->first_tb; |
| 975 | while (tb != NULL) { |
| 976 | n = (long)tb & 3; |
| 977 | tb = (TranslationBlock *)((long)tb & ~3); |
| 978 | tb_next = tb->page_next[n]; |
| 979 | /* NOTE: this is subtle as a TB may span two physical pages */ |
| 980 | if (n == 0) { |
| 981 | /* NOTE: tb_end may be after the end of the page, but |
| 982 | it is not a problem */ |
| 983 | tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK); |
| 984 | tb_end = tb_start + tb->size; |
| 985 | } else { |
| 986 | tb_start = tb->page_addr[1]; |
| 987 | tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); |
| 988 | } |
| 989 | if (!(tb_end <= start || tb_start >= end)) { |
| 990 | #ifdef TARGET_HAS_PRECISE_SMC |
| 991 | if (current_tb_not_found) { |
| 992 | current_tb_not_found = 0; |
| 993 | current_tb = NULL; |
| 994 | if (env->mem_io_pc) { |
| 995 | /* now we have a real cpu fault */ |
| 996 | current_tb = tb_find_pc(env->mem_io_pc); |
| 997 | } |
| 998 | } |
| 999 | if (current_tb == tb && |
| 1000 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
| 1001 | /* If we are modifying the current TB, we must stop |
| 1002 | its execution. We could be more precise by checking |
| 1003 | that the modification is after the current PC, but it |
| 1004 | would require a specialized function to partially |
| 1005 | restore the CPU state */ |
| 1006 | |
| 1007 | current_tb_modified = 1; |
| 1008 | cpu_restore_state(current_tb, env, |
| 1009 | env->mem_io_pc, NULL); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1010 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
| 1011 | ¤t_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1012 | } |
| 1013 | #endif /* TARGET_HAS_PRECISE_SMC */ |
| 1014 | /* we need to do that to handle the case where a signal |
| 1015 | occurs while doing tb_phys_invalidate() */ |
| 1016 | saved_tb = NULL; |
| 1017 | if (env) { |
| 1018 | saved_tb = env->current_tb; |
| 1019 | env->current_tb = NULL; |
| 1020 | } |
| 1021 | tb_phys_invalidate(tb, -1); |
| 1022 | if (env) { |
| 1023 | env->current_tb = saved_tb; |
| 1024 | if (env->interrupt_request && env->current_tb) |
| 1025 | cpu_interrupt(env, env->interrupt_request); |
| 1026 | } |
| 1027 | } |
| 1028 | tb = tb_next; |
| 1029 | } |
| 1030 | #if !defined(CONFIG_USER_ONLY) |
| 1031 | /* if no code remaining, no need to continue to use slow writes */ |
| 1032 | if (!p->first_tb) { |
| 1033 | invalidate_page_bitmap(p); |
| 1034 | if (is_cpu_write_access) { |
| 1035 | tlb_unprotect_code_phys(env, start, env->mem_io_vaddr); |
| 1036 | } |
| 1037 | } |
| 1038 | #endif |
| 1039 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1040 | if (current_tb_modified) { |
| 1041 | /* we generate a block containing just the instruction |
| 1042 | modifying the memory. It will ensure that it cannot modify |
| 1043 | itself */ |
| 1044 | env->current_tb = NULL; |
| 1045 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
| 1046 | cpu_resume_from_signal(env, NULL); |
| 1047 | } |
| 1048 | #endif |
| 1049 | } |
| 1050 | |
| 1051 | /* len must be <= 8 and start must be a multiple of len */ |
| 1052 | static inline void tb_invalidate_phys_page_fast(target_phys_addr_t start, int len) |
| 1053 | { |
| 1054 | PageDesc *p; |
| 1055 | int offset, b; |
| 1056 | #if 0 |
| 1057 | if (1) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1058 | qemu_log("modifying code at 0x%x size=%d EIP=%x PC=%08x\n", |
| 1059 | cpu_single_env->mem_io_vaddr, len, |
| 1060 | cpu_single_env->eip, |
| 1061 | 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] | 1062 | } |
| 1063 | #endif |
| 1064 | p = page_find(start >> TARGET_PAGE_BITS); |
| 1065 | if (!p) |
| 1066 | return; |
| 1067 | if (p->code_bitmap) { |
| 1068 | offset = start & ~TARGET_PAGE_MASK; |
| 1069 | b = p->code_bitmap[offset >> 3] >> (offset & 7); |
| 1070 | if (b & ((1 << len) - 1)) |
| 1071 | goto do_invalidate; |
| 1072 | } else { |
| 1073 | do_invalidate: |
| 1074 | tb_invalidate_phys_page_range(start, start + len, 1); |
| 1075 | } |
| 1076 | } |
| 1077 | |
| 1078 | #if !defined(CONFIG_SOFTMMU) |
| 1079 | static void tb_invalidate_phys_page(target_phys_addr_t addr, |
| 1080 | unsigned long pc, void *puc) |
| 1081 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1082 | TranslationBlock *tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1083 | PageDesc *p; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1084 | int n; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1085 | #ifdef TARGET_HAS_PRECISE_SMC |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1086 | TranslationBlock *current_tb = NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1087 | CPUState *env = cpu_single_env; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1088 | int current_tb_modified = 0; |
| 1089 | target_ulong current_pc = 0; |
| 1090 | target_ulong current_cs_base = 0; |
| 1091 | int current_flags = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1092 | #endif |
| 1093 | |
| 1094 | addr &= TARGET_PAGE_MASK; |
| 1095 | p = page_find(addr >> TARGET_PAGE_BITS); |
| 1096 | if (!p) |
| 1097 | return; |
| 1098 | tb = p->first_tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1099 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1100 | if (tb && pc != 0) { |
| 1101 | current_tb = tb_find_pc(pc); |
| 1102 | } |
| 1103 | #endif |
| 1104 | while (tb != NULL) { |
| 1105 | n = (long)tb & 3; |
| 1106 | tb = (TranslationBlock *)((long)tb & ~3); |
| 1107 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1108 | if (current_tb == tb && |
| 1109 | (current_tb->cflags & CF_COUNT_MASK) != 1) { |
| 1110 | /* If we are modifying the current TB, we must stop |
| 1111 | its execution. We could be more precise by checking |
| 1112 | that the modification is after the current PC, but it |
| 1113 | would require a specialized function to partially |
| 1114 | restore the CPU state */ |
| 1115 | |
| 1116 | current_tb_modified = 1; |
| 1117 | cpu_restore_state(current_tb, env, pc, puc); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1118 | cpu_get_tb_cpu_state(env, ¤t_pc, ¤t_cs_base, |
| 1119 | ¤t_flags); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1120 | } |
| 1121 | #endif /* TARGET_HAS_PRECISE_SMC */ |
| 1122 | tb_phys_invalidate(tb, addr); |
| 1123 | tb = tb->page_next[n]; |
| 1124 | } |
| 1125 | p->first_tb = NULL; |
| 1126 | #ifdef TARGET_HAS_PRECISE_SMC |
| 1127 | if (current_tb_modified) { |
| 1128 | /* we generate a block containing just the instruction |
| 1129 | modifying the memory. It will ensure that it cannot modify |
| 1130 | itself */ |
| 1131 | env->current_tb = NULL; |
| 1132 | tb_gen_code(env, current_pc, current_cs_base, current_flags, 1); |
| 1133 | cpu_resume_from_signal(env, puc); |
| 1134 | } |
| 1135 | #endif |
| 1136 | } |
| 1137 | #endif |
| 1138 | |
| 1139 | /* add the tb in the target page and protect it if necessary */ |
| 1140 | static inline void tb_alloc_page(TranslationBlock *tb, |
| 1141 | unsigned int n, target_ulong page_addr) |
| 1142 | { |
| 1143 | PageDesc *p; |
| 1144 | TranslationBlock *last_first_tb; |
| 1145 | |
| 1146 | tb->page_addr[n] = page_addr; |
| 1147 | p = page_find_alloc(page_addr >> TARGET_PAGE_BITS); |
| 1148 | tb->page_next[n] = p->first_tb; |
| 1149 | last_first_tb = p->first_tb; |
| 1150 | p->first_tb = (TranslationBlock *)((long)tb | n); |
| 1151 | invalidate_page_bitmap(p); |
| 1152 | |
| 1153 | #if defined(TARGET_HAS_SMC) || 1 |
| 1154 | |
| 1155 | #if defined(CONFIG_USER_ONLY) |
| 1156 | if (p->flags & PAGE_WRITE) { |
| 1157 | target_ulong addr; |
| 1158 | PageDesc *p2; |
| 1159 | int prot; |
| 1160 | |
| 1161 | /* force the host page as non writable (writes will have a |
| 1162 | page fault + mprotect overhead) */ |
| 1163 | page_addr &= qemu_host_page_mask; |
| 1164 | prot = 0; |
| 1165 | for(addr = page_addr; addr < page_addr + qemu_host_page_size; |
| 1166 | addr += TARGET_PAGE_SIZE) { |
| 1167 | |
| 1168 | p2 = page_find (addr >> TARGET_PAGE_BITS); |
| 1169 | if (!p2) |
| 1170 | continue; |
| 1171 | prot |= p2->flags; |
| 1172 | p2->flags &= ~PAGE_WRITE; |
| 1173 | page_get_flags(addr); |
| 1174 | } |
| 1175 | mprotect(g2h(page_addr), qemu_host_page_size, |
| 1176 | (prot & PAGE_BITS) & ~PAGE_WRITE); |
| 1177 | #ifdef DEBUG_TB_INVALIDATE |
| 1178 | printf("protecting code page: 0x" TARGET_FMT_lx "\n", |
| 1179 | page_addr); |
| 1180 | #endif |
| 1181 | } |
| 1182 | #else |
| 1183 | /* if some code is already present, then the pages are already |
| 1184 | protected. So we handle the case where only the first TB is |
| 1185 | allocated in a physical page */ |
| 1186 | if (!last_first_tb) { |
| 1187 | tlb_protect_code(page_addr); |
| 1188 | } |
| 1189 | #endif |
| 1190 | |
| 1191 | #endif /* TARGET_HAS_SMC */ |
| 1192 | } |
| 1193 | |
| 1194 | /* Allocate a new translation block. Flush the translation buffer if |
| 1195 | too many translation blocks or too much generated code. */ |
| 1196 | TranslationBlock *tb_alloc(target_ulong pc) |
| 1197 | { |
| 1198 | TranslationBlock *tb; |
| 1199 | |
| 1200 | if (nb_tbs >= code_gen_max_blocks || |
| 1201 | (code_gen_ptr - code_gen_buffer) >= code_gen_buffer_max_size) |
| 1202 | return NULL; |
| 1203 | tb = &tbs[nb_tbs++]; |
| 1204 | tb->pc = pc; |
| 1205 | tb->cflags = 0; |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 1206 | #ifdef CONFIG_MEMCHECK |
| 1207 | tb->tpc2gpc = NULL; |
| 1208 | tb->tpc2gpc_pairs = 0; |
| 1209 | #endif // CONFIG_MEMCHECK |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1210 | return tb; |
| 1211 | } |
| 1212 | |
| 1213 | void tb_free(TranslationBlock *tb) |
| 1214 | { |
| 1215 | /* In practice this is mostly used for single use temporary TB |
| 1216 | Ignore the hard cases and just back up if this TB happens to |
| 1217 | be the last one generated. */ |
| 1218 | if (nb_tbs > 0 && tb == &tbs[nb_tbs - 1]) { |
| 1219 | code_gen_ptr = tb->tc_ptr; |
| 1220 | nb_tbs--; |
| 1221 | } |
| 1222 | } |
| 1223 | |
| 1224 | /* add a new TB and link it to the physical page tables. phys_page2 is |
| 1225 | (-1) to indicate that only one page contains the TB. */ |
| 1226 | void tb_link_phys(TranslationBlock *tb, |
| 1227 | target_ulong phys_pc, target_ulong phys_page2) |
| 1228 | { |
| 1229 | unsigned int h; |
| 1230 | TranslationBlock **ptb; |
| 1231 | |
| 1232 | /* Grab the mmap lock to stop another thread invalidating this TB |
| 1233 | before we are done. */ |
| 1234 | mmap_lock(); |
| 1235 | /* add in the physical hash table */ |
| 1236 | h = tb_phys_hash_func(phys_pc); |
| 1237 | ptb = &tb_phys_hash[h]; |
| 1238 | tb->phys_hash_next = *ptb; |
| 1239 | *ptb = tb; |
| 1240 | |
| 1241 | /* add in the page list */ |
| 1242 | tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK); |
| 1243 | if (phys_page2 != -1) |
| 1244 | tb_alloc_page(tb, 1, phys_page2); |
| 1245 | else |
| 1246 | tb->page_addr[1] = -1; |
| 1247 | |
| 1248 | tb->jmp_first = (TranslationBlock *)((long)tb | 2); |
| 1249 | tb->jmp_next[0] = NULL; |
| 1250 | tb->jmp_next[1] = NULL; |
| 1251 | |
| 1252 | /* init original jump addresses */ |
| 1253 | if (tb->tb_next_offset[0] != 0xffff) |
| 1254 | tb_reset_jump(tb, 0); |
| 1255 | if (tb->tb_next_offset[1] != 0xffff) |
| 1256 | tb_reset_jump(tb, 1); |
| 1257 | |
| 1258 | #ifdef DEBUG_TB_CHECK |
| 1259 | tb_page_check(); |
| 1260 | #endif |
| 1261 | mmap_unlock(); |
| 1262 | } |
| 1263 | |
| 1264 | /* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr < |
| 1265 | tb[1].tc_ptr. Return NULL if not found */ |
| 1266 | TranslationBlock *tb_find_pc(unsigned long tc_ptr) |
| 1267 | { |
| 1268 | int m_min, m_max, m; |
| 1269 | unsigned long v; |
| 1270 | TranslationBlock *tb; |
| 1271 | |
| 1272 | if (nb_tbs <= 0) |
| 1273 | return NULL; |
| 1274 | if (tc_ptr < (unsigned long)code_gen_buffer || |
| 1275 | tc_ptr >= (unsigned long)code_gen_ptr) |
| 1276 | return NULL; |
| 1277 | /* binary search (cf Knuth) */ |
| 1278 | m_min = 0; |
| 1279 | m_max = nb_tbs - 1; |
| 1280 | while (m_min <= m_max) { |
| 1281 | m = (m_min + m_max) >> 1; |
| 1282 | tb = &tbs[m]; |
| 1283 | v = (unsigned long)tb->tc_ptr; |
| 1284 | if (v == tc_ptr) |
| 1285 | return tb; |
| 1286 | else if (tc_ptr < v) { |
| 1287 | m_max = m - 1; |
| 1288 | } else { |
| 1289 | m_min = m + 1; |
| 1290 | } |
| 1291 | } |
| 1292 | return &tbs[m_max]; |
| 1293 | } |
| 1294 | |
| 1295 | static void tb_reset_jump_recursive(TranslationBlock *tb); |
| 1296 | |
| 1297 | static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n) |
| 1298 | { |
| 1299 | TranslationBlock *tb1, *tb_next, **ptb; |
| 1300 | unsigned int n1; |
| 1301 | |
| 1302 | tb1 = tb->jmp_next[n]; |
| 1303 | if (tb1 != NULL) { |
| 1304 | /* find head of list */ |
| 1305 | for(;;) { |
| 1306 | n1 = (long)tb1 & 3; |
| 1307 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 1308 | if (n1 == 2) |
| 1309 | break; |
| 1310 | tb1 = tb1->jmp_next[n1]; |
| 1311 | } |
| 1312 | /* we are now sure now that tb jumps to tb1 */ |
| 1313 | tb_next = tb1; |
| 1314 | |
| 1315 | /* remove tb from the jmp_first list */ |
| 1316 | ptb = &tb_next->jmp_first; |
| 1317 | for(;;) { |
| 1318 | tb1 = *ptb; |
| 1319 | n1 = (long)tb1 & 3; |
| 1320 | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
| 1321 | if (n1 == n && tb1 == tb) |
| 1322 | break; |
| 1323 | ptb = &tb1->jmp_next[n1]; |
| 1324 | } |
| 1325 | *ptb = tb->jmp_next[n]; |
| 1326 | tb->jmp_next[n] = NULL; |
| 1327 | |
| 1328 | /* suppress the jump to next tb in generated code */ |
| 1329 | tb_reset_jump(tb, n); |
| 1330 | |
| 1331 | /* suppress jumps in the tb on which we could have jumped */ |
| 1332 | tb_reset_jump_recursive(tb_next); |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | static void tb_reset_jump_recursive(TranslationBlock *tb) |
| 1337 | { |
| 1338 | tb_reset_jump_recursive2(tb, 0); |
| 1339 | tb_reset_jump_recursive2(tb, 1); |
| 1340 | } |
| 1341 | |
| 1342 | #if defined(TARGET_HAS_ICE) |
| 1343 | static void breakpoint_invalidate(CPUState *env, target_ulong pc) |
| 1344 | { |
| 1345 | target_phys_addr_t addr; |
| 1346 | target_ulong pd; |
| 1347 | ram_addr_t ram_addr; |
| 1348 | PhysPageDesc *p; |
| 1349 | |
| 1350 | addr = cpu_get_phys_page_debug(env, pc); |
| 1351 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 1352 | if (!p) { |
| 1353 | pd = IO_MEM_UNASSIGNED; |
| 1354 | } else { |
| 1355 | pd = p->phys_offset; |
| 1356 | } |
| 1357 | ram_addr = (pd & TARGET_PAGE_MASK) | (pc & ~TARGET_PAGE_MASK); |
| 1358 | tb_invalidate_phys_page_range(ram_addr, ram_addr + 1, 0); |
| 1359 | } |
| 1360 | #endif |
| 1361 | |
| 1362 | /* Add a watchpoint. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1363 | int cpu_watchpoint_insert(CPUState *env, target_ulong addr, target_ulong len, |
| 1364 | int flags, CPUWatchpoint **watchpoint) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1365 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1366 | target_ulong len_mask = ~(len - 1); |
| 1367 | CPUWatchpoint *wp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1368 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1369 | /* sanity checks: allow power-of-2 lengths, deny unaligned watchpoints */ |
| 1370 | if ((len != 1 && len != 2 && len != 4 && len != 8) || (addr & ~len_mask)) { |
| 1371 | fprintf(stderr, "qemu: tried to set invalid watchpoint at " |
| 1372 | TARGET_FMT_lx ", len=" TARGET_FMT_lu "\n", addr, len); |
| 1373 | return -EINVAL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1374 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1375 | wp = qemu_malloc(sizeof(*wp)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1376 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1377 | wp->vaddr = addr; |
| 1378 | wp->len_mask = len_mask; |
| 1379 | wp->flags = flags; |
| 1380 | |
| 1381 | /* keep all GDB-injected watchpoints in front */ |
| 1382 | if (flags & BP_GDB) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1383 | QTAILQ_INSERT_HEAD(&env->watchpoints, wp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1384 | else |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1385 | QTAILQ_INSERT_TAIL(&env->watchpoints, wp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1386 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1387 | tlb_flush_page(env, addr); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1388 | |
| 1389 | if (watchpoint) |
| 1390 | *watchpoint = wp; |
| 1391 | return 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1392 | } |
| 1393 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1394 | /* Remove a specific watchpoint. */ |
| 1395 | int cpu_watchpoint_remove(CPUState *env, target_ulong addr, target_ulong len, |
| 1396 | int flags) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1397 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1398 | target_ulong len_mask = ~(len - 1); |
| 1399 | CPUWatchpoint *wp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1400 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1401 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1402 | if (addr == wp->vaddr && len_mask == wp->len_mask |
| 1403 | && flags == (wp->flags & ~BP_WATCHPOINT_HIT)) { |
| 1404 | cpu_watchpoint_remove_by_ref(env, wp); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1405 | return 0; |
| 1406 | } |
| 1407 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1408 | return -ENOENT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1409 | } |
| 1410 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1411 | /* Remove a specific watchpoint by reference. */ |
| 1412 | void cpu_watchpoint_remove_by_ref(CPUState *env, CPUWatchpoint *watchpoint) |
| 1413 | { |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1414 | QTAILQ_REMOVE(&env->watchpoints, watchpoint, entry); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1415 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1416 | tlb_flush_page(env, watchpoint->vaddr); |
| 1417 | |
| 1418 | qemu_free(watchpoint); |
| 1419 | } |
| 1420 | |
| 1421 | /* Remove all matching watchpoints. */ |
| 1422 | void cpu_watchpoint_remove_all(CPUState *env, int mask) |
| 1423 | { |
| 1424 | CPUWatchpoint *wp, *next; |
| 1425 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1426 | QTAILQ_FOREACH_SAFE(wp, &env->watchpoints, entry, next) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1427 | if (wp->flags & mask) |
| 1428 | cpu_watchpoint_remove_by_ref(env, wp); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1429 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1430 | } |
| 1431 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1432 | /* Add a breakpoint. */ |
| 1433 | int cpu_breakpoint_insert(CPUState *env, target_ulong pc, int flags, |
| 1434 | CPUBreakpoint **breakpoint) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1435 | { |
| 1436 | #if defined(TARGET_HAS_ICE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1437 | CPUBreakpoint *bp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1438 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1439 | bp = qemu_malloc(sizeof(*bp)); |
| 1440 | |
| 1441 | bp->pc = pc; |
| 1442 | bp->flags = flags; |
| 1443 | |
| 1444 | /* keep all GDB-injected breakpoints in front */ |
| 1445 | if (flags & BP_GDB) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1446 | QTAILQ_INSERT_HEAD(&env->breakpoints, bp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1447 | else |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1448 | QTAILQ_INSERT_TAIL(&env->breakpoints, bp, entry); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1449 | |
| 1450 | breakpoint_invalidate(env, pc); |
| 1451 | |
| 1452 | if (breakpoint) |
| 1453 | *breakpoint = bp; |
| 1454 | return 0; |
| 1455 | #else |
| 1456 | return -ENOSYS; |
| 1457 | #endif |
| 1458 | } |
| 1459 | |
| 1460 | /* Remove a specific breakpoint. */ |
| 1461 | int cpu_breakpoint_remove(CPUState *env, target_ulong pc, int flags) |
| 1462 | { |
| 1463 | #if defined(TARGET_HAS_ICE) |
| 1464 | CPUBreakpoint *bp; |
| 1465 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1466 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1467 | if (bp->pc == pc && bp->flags == flags) { |
| 1468 | cpu_breakpoint_remove_by_ref(env, bp); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1469 | return 0; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1470 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1471 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1472 | return -ENOENT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1473 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1474 | return -ENOSYS; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1475 | #endif |
| 1476 | } |
| 1477 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1478 | /* Remove a specific breakpoint by reference. */ |
| 1479 | 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] | 1480 | { |
| 1481 | #if defined(TARGET_HAS_ICE) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1482 | QTAILQ_REMOVE(&env->breakpoints, breakpoint, entry); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1483 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1484 | breakpoint_invalidate(env, breakpoint->pc); |
| 1485 | |
| 1486 | qemu_free(breakpoint); |
| 1487 | #endif |
| 1488 | } |
| 1489 | |
| 1490 | /* Remove all matching breakpoints. */ |
| 1491 | void cpu_breakpoint_remove_all(CPUState *env, int mask) |
| 1492 | { |
| 1493 | #if defined(TARGET_HAS_ICE) |
| 1494 | CPUBreakpoint *bp, *next; |
| 1495 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1496 | QTAILQ_FOREACH_SAFE(bp, &env->breakpoints, entry, next) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1497 | if (bp->flags & mask) |
| 1498 | cpu_breakpoint_remove_by_ref(env, bp); |
| 1499 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1500 | #endif |
| 1501 | } |
| 1502 | |
| 1503 | /* enable or disable single step mode. EXCP_DEBUG is returned by the |
| 1504 | CPU loop after each instruction */ |
| 1505 | void cpu_single_step(CPUState *env, int enabled) |
| 1506 | { |
| 1507 | #if defined(TARGET_HAS_ICE) |
| 1508 | if (env->singlestep_enabled != enabled) { |
| 1509 | env->singlestep_enabled = enabled; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1510 | if (kvm_enabled()) |
| 1511 | kvm_update_guest_debug(env, 0); |
| 1512 | else { |
| 1513 | /* must flush all the translated code to avoid inconsistencies */ |
| 1514 | /* XXX: only flush what is necessary */ |
| 1515 | tb_flush(env); |
| 1516 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1517 | } |
| 1518 | #endif |
| 1519 | } |
| 1520 | |
| 1521 | /* enable or disable low levels log */ |
| 1522 | void cpu_set_log(int log_flags) |
| 1523 | { |
| 1524 | loglevel = log_flags; |
| 1525 | if (loglevel && !logfile) { |
| 1526 | logfile = fopen(logfilename, log_append ? "a" : "w"); |
| 1527 | if (!logfile) { |
| 1528 | perror(logfilename); |
| 1529 | _exit(1); |
| 1530 | } |
| 1531 | #if !defined(CONFIG_SOFTMMU) |
| 1532 | /* must avoid mmap() usage of glibc by setting a buffer "by hand" */ |
| 1533 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1534 | static char logfile_buf[4096]; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1535 | setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf)); |
| 1536 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1537 | #elif !defined(_WIN32) |
| 1538 | /* 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] | 1539 | setvbuf(logfile, NULL, _IOLBF, 0); |
| 1540 | #endif |
| 1541 | log_append = 1; |
| 1542 | } |
| 1543 | if (!loglevel && logfile) { |
| 1544 | fclose(logfile); |
| 1545 | logfile = NULL; |
| 1546 | } |
| 1547 | } |
| 1548 | |
| 1549 | void cpu_set_log_filename(const char *filename) |
| 1550 | { |
| 1551 | logfilename = strdup(filename); |
| 1552 | if (logfile) { |
| 1553 | fclose(logfile); |
| 1554 | logfile = NULL; |
| 1555 | } |
| 1556 | cpu_set_log(loglevel); |
| 1557 | } |
| 1558 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1559 | static void cpu_unlink_tb(CPUState *env) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1560 | { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1561 | /* FIXME: TB unchaining isn't SMP safe. For now just ignore the |
| 1562 | problem and hope the cpu will stop of its own accord. For userspace |
| 1563 | emulation this often isn't actually as bad as it sounds. Often |
| 1564 | signals are used primarily to interrupt blocking syscalls. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1565 | TranslationBlock *tb; |
| 1566 | static spinlock_t interrupt_lock = SPIN_LOCK_UNLOCKED; |
| 1567 | |
David 'Digit' Turner | 795bb19 | 2011-05-09 15:20:22 +0200 | [diff] [blame] | 1568 | spin_lock(&interrupt_lock); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1569 | tb = env->current_tb; |
| 1570 | /* if the cpu is currently executing code, we must unlink it and |
| 1571 | all the potentially executing TB */ |
David 'Digit' Turner | 795bb19 | 2011-05-09 15:20:22 +0200 | [diff] [blame] | 1572 | if (tb) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1573 | env->current_tb = NULL; |
| 1574 | tb_reset_jump_recursive(tb); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1575 | } |
David 'Digit' Turner | 795bb19 | 2011-05-09 15:20:22 +0200 | [diff] [blame] | 1576 | spin_unlock(&interrupt_lock); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1577 | } |
| 1578 | |
| 1579 | /* mask must never be zero, except for A20 change call */ |
| 1580 | void cpu_interrupt(CPUState *env, int mask) |
| 1581 | { |
| 1582 | int old_mask; |
| 1583 | |
| 1584 | old_mask = env->interrupt_request; |
| 1585 | env->interrupt_request |= mask; |
| 1586 | |
| 1587 | #ifndef CONFIG_USER_ONLY |
| 1588 | /* |
| 1589 | * If called from iothread context, wake the target cpu in |
| 1590 | * case its halted. |
| 1591 | */ |
| 1592 | if (!qemu_cpu_self(env)) { |
| 1593 | qemu_cpu_kick(env); |
| 1594 | return; |
| 1595 | } |
| 1596 | #endif |
| 1597 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1598 | if (use_icount) { |
| 1599 | env->icount_decr.u16.high = 0xffff; |
| 1600 | #ifndef CONFIG_USER_ONLY |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1601 | if (!can_do_io(env) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1602 | && (mask & ~old_mask) != 0) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1603 | cpu_abort(env, "Raised interrupt while not in I/O function"); |
| 1604 | } |
| 1605 | #endif |
| 1606 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1607 | cpu_unlink_tb(env); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1608 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1609 | } |
| 1610 | |
| 1611 | void cpu_reset_interrupt(CPUState *env, int mask) |
| 1612 | { |
| 1613 | env->interrupt_request &= ~mask; |
| 1614 | } |
| 1615 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1616 | void cpu_exit(CPUState *env) |
| 1617 | { |
| 1618 | env->exit_request = 1; |
| 1619 | cpu_unlink_tb(env); |
| 1620 | } |
| 1621 | |
| 1622 | const CPULogItem cpu_log_items[] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1623 | { CPU_LOG_TB_OUT_ASM, "out_asm", |
| 1624 | "show generated host assembly code for each compiled TB" }, |
| 1625 | { CPU_LOG_TB_IN_ASM, "in_asm", |
| 1626 | "show target assembly code for each compiled TB" }, |
| 1627 | { CPU_LOG_TB_OP, "op", |
| 1628 | "show micro ops for each compiled TB" }, |
| 1629 | { CPU_LOG_TB_OP_OPT, "op_opt", |
| 1630 | "show micro ops " |
| 1631 | #ifdef TARGET_I386 |
| 1632 | "before eflags optimization and " |
| 1633 | #endif |
| 1634 | "after liveness analysis" }, |
| 1635 | { CPU_LOG_INT, "int", |
| 1636 | "show interrupts/exceptions in short format" }, |
| 1637 | { CPU_LOG_EXEC, "exec", |
| 1638 | "show trace before each executed TB (lots of logs)" }, |
| 1639 | { CPU_LOG_TB_CPU, "cpu", |
| 1640 | "show CPU state before block translation" }, |
| 1641 | #ifdef TARGET_I386 |
| 1642 | { CPU_LOG_PCALL, "pcall", |
| 1643 | "show protected mode far calls/returns/exceptions" }, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1644 | { CPU_LOG_RESET, "cpu_reset", |
| 1645 | "show CPU state before CPU resets" }, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1646 | #endif |
| 1647 | #ifdef DEBUG_IOPORT |
| 1648 | { CPU_LOG_IOPORT, "ioport", |
| 1649 | "show all i/o ports accesses" }, |
| 1650 | #endif |
| 1651 | { 0, NULL, NULL }, |
| 1652 | }; |
| 1653 | |
| 1654 | static int cmp1(const char *s1, int n, const char *s2) |
| 1655 | { |
| 1656 | if (strlen(s2) != n) |
| 1657 | return 0; |
| 1658 | return memcmp(s1, s2, n) == 0; |
| 1659 | } |
| 1660 | |
| 1661 | /* takes a comma separated list of log masks. Return 0 if error. */ |
| 1662 | int cpu_str_to_log_mask(const char *str) |
| 1663 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1664 | const CPULogItem *item; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1665 | int mask; |
| 1666 | const char *p, *p1; |
| 1667 | |
| 1668 | p = str; |
| 1669 | mask = 0; |
| 1670 | for(;;) { |
| 1671 | p1 = strchr(p, ','); |
| 1672 | if (!p1) |
| 1673 | p1 = p + strlen(p); |
| 1674 | if(cmp1(p,p1-p,"all")) { |
| 1675 | for(item = cpu_log_items; item->mask != 0; item++) { |
| 1676 | mask |= item->mask; |
| 1677 | } |
| 1678 | } else { |
| 1679 | for(item = cpu_log_items; item->mask != 0; item++) { |
| 1680 | if (cmp1(p, p1 - p, item->name)) |
| 1681 | goto found; |
| 1682 | } |
| 1683 | return 0; |
| 1684 | } |
| 1685 | found: |
| 1686 | mask |= item->mask; |
| 1687 | if (*p1 != ',') |
| 1688 | break; |
| 1689 | p = p1 + 1; |
| 1690 | } |
| 1691 | return mask; |
| 1692 | } |
| 1693 | |
| 1694 | void cpu_abort(CPUState *env, const char *fmt, ...) |
| 1695 | { |
| 1696 | va_list ap; |
| 1697 | va_list ap2; |
| 1698 | |
| 1699 | va_start(ap, fmt); |
| 1700 | va_copy(ap2, ap); |
| 1701 | fprintf(stderr, "qemu: fatal: "); |
| 1702 | vfprintf(stderr, fmt, ap); |
| 1703 | fprintf(stderr, "\n"); |
| 1704 | #ifdef TARGET_I386 |
| 1705 | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP); |
| 1706 | #else |
| 1707 | cpu_dump_state(env, stderr, fprintf, 0); |
| 1708 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1709 | if (qemu_log_enabled()) { |
| 1710 | qemu_log("qemu: fatal: "); |
| 1711 | qemu_log_vprintf(fmt, ap2); |
| 1712 | qemu_log("\n"); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1713 | #ifdef TARGET_I386 |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1714 | 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] | 1715 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1716 | log_cpu_state(env, 0); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1717 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1718 | qemu_log_flush(); |
| 1719 | qemu_log_close(); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1720 | } |
| 1721 | va_end(ap2); |
| 1722 | va_end(ap); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 1723 | #if defined(CONFIG_USER_ONLY) |
| 1724 | { |
| 1725 | struct sigaction act; |
| 1726 | sigfillset(&act.sa_mask); |
| 1727 | act.sa_handler = SIG_DFL; |
| 1728 | sigaction(SIGABRT, &act, NULL); |
| 1729 | } |
| 1730 | #endif |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1731 | abort(); |
| 1732 | } |
| 1733 | |
| 1734 | CPUState *cpu_copy(CPUState *env) |
| 1735 | { |
| 1736 | CPUState *new_env = cpu_init(env->cpu_model_str); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1737 | CPUState *next_cpu = new_env->next_cpu; |
| 1738 | int cpu_index = new_env->cpu_index; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1739 | #if defined(TARGET_HAS_ICE) |
| 1740 | CPUBreakpoint *bp; |
| 1741 | CPUWatchpoint *wp; |
| 1742 | #endif |
| 1743 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1744 | memcpy(new_env, env, sizeof(CPUState)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1745 | |
| 1746 | /* Preserve chaining and index. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1747 | new_env->next_cpu = next_cpu; |
| 1748 | new_env->cpu_index = cpu_index; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1749 | |
| 1750 | /* Clone all break/watchpoints. |
| 1751 | Note: Once we support ptrace with hw-debug register access, make sure |
| 1752 | BP_CPU break/watchpoints are handled correctly on clone. */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1753 | QTAILQ_INIT(&env->breakpoints); |
| 1754 | QTAILQ_INIT(&env->watchpoints); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1755 | #if defined(TARGET_HAS_ICE) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1756 | QTAILQ_FOREACH(bp, &env->breakpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1757 | cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL); |
| 1758 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 1759 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1760 | cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1, |
| 1761 | wp->flags, NULL); |
| 1762 | } |
| 1763 | #endif |
| 1764 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1765 | return new_env; |
| 1766 | } |
| 1767 | |
| 1768 | #if !defined(CONFIG_USER_ONLY) |
| 1769 | |
| 1770 | static inline void tlb_flush_jmp_cache(CPUState *env, target_ulong addr) |
| 1771 | { |
| 1772 | unsigned int i; |
| 1773 | |
| 1774 | /* Discard jump cache entries for any tb which might potentially |
| 1775 | overlap the flushed page. */ |
| 1776 | i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 1777 | memset (&env->tb_jmp_cache[i], 0, |
| 1778 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1779 | |
| 1780 | i = tb_jmp_cache_hash_page(addr); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 1781 | memset (&env->tb_jmp_cache[i], 0, |
| 1782 | TB_JMP_PAGE_SIZE * sizeof(TranslationBlock *)); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1783 | } |
| 1784 | |
| 1785 | /* NOTE: if flush_global is true, also flush global entries (not |
| 1786 | implemented yet) */ |
| 1787 | void tlb_flush(CPUState *env, int flush_global) |
| 1788 | { |
| 1789 | int i; |
| 1790 | |
| 1791 | #if defined(DEBUG_TLB) |
| 1792 | printf("tlb_flush:\n"); |
| 1793 | #endif |
| 1794 | /* must reset current TB so that interrupts cannot modify the |
| 1795 | links while we are modifying them */ |
| 1796 | env->current_tb = NULL; |
| 1797 | |
| 1798 | for(i = 0; i < CPU_TLB_SIZE; i++) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1799 | int mmu_idx; |
| 1800 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { |
| 1801 | env->tlb_table[mmu_idx][i].addr_read = -1; |
| 1802 | env->tlb_table[mmu_idx][i].addr_write = -1; |
| 1803 | env->tlb_table[mmu_idx][i].addr_code = -1; |
| 1804 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1805 | } |
| 1806 | |
| 1807 | memset (env->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof (void *)); |
| 1808 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1809 | #ifdef CONFIG_KQEMU |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1810 | if (env->kqemu_enabled) { |
| 1811 | kqemu_flush(env, flush_global); |
| 1812 | } |
| 1813 | #endif |
| 1814 | tlb_flush_count++; |
| 1815 | } |
| 1816 | |
| 1817 | static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr) |
| 1818 | { |
| 1819 | if (addr == (tlb_entry->addr_read & |
| 1820 | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) || |
| 1821 | addr == (tlb_entry->addr_write & |
| 1822 | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) || |
| 1823 | addr == (tlb_entry->addr_code & |
| 1824 | (TARGET_PAGE_MASK | TLB_INVALID_MASK))) { |
| 1825 | tlb_entry->addr_read = -1; |
| 1826 | tlb_entry->addr_write = -1; |
| 1827 | tlb_entry->addr_code = -1; |
| 1828 | } |
| 1829 | } |
| 1830 | |
| 1831 | void tlb_flush_page(CPUState *env, target_ulong addr) |
| 1832 | { |
| 1833 | int i; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1834 | int mmu_idx; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1835 | |
| 1836 | #if defined(DEBUG_TLB) |
| 1837 | printf("tlb_flush_page: " TARGET_FMT_lx "\n", addr); |
| 1838 | #endif |
| 1839 | /* must reset current TB so that interrupts cannot modify the |
| 1840 | links while we are modifying them */ |
| 1841 | env->current_tb = NULL; |
| 1842 | |
| 1843 | addr &= TARGET_PAGE_MASK; |
| 1844 | i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1845 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) |
| 1846 | 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] | 1847 | |
| 1848 | tlb_flush_jmp_cache(env, addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1849 | } |
| 1850 | |
| 1851 | /* update the TLBs so that writes to code in the virtual page 'addr' |
| 1852 | can be detected */ |
| 1853 | static void tlb_protect_code(ram_addr_t ram_addr) |
| 1854 | { |
| 1855 | cpu_physical_memory_reset_dirty(ram_addr, |
| 1856 | ram_addr + TARGET_PAGE_SIZE, |
| 1857 | CODE_DIRTY_FLAG); |
| 1858 | } |
| 1859 | |
| 1860 | /* update the TLB so that writes in physical page 'phys_addr' are no longer |
| 1861 | tested for self modifying code */ |
| 1862 | static void tlb_unprotect_code_phys(CPUState *env, ram_addr_t ram_addr, |
| 1863 | target_ulong vaddr) |
| 1864 | { |
| 1865 | phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] |= CODE_DIRTY_FLAG; |
| 1866 | } |
| 1867 | |
| 1868 | static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry, |
| 1869 | unsigned long start, unsigned long length) |
| 1870 | { |
| 1871 | unsigned long addr; |
| 1872 | if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { |
| 1873 | addr = (tlb_entry->addr_write & TARGET_PAGE_MASK) + tlb_entry->addend; |
| 1874 | if ((addr - start) < length) { |
| 1875 | tlb_entry->addr_write = (tlb_entry->addr_write & TARGET_PAGE_MASK) | TLB_NOTDIRTY; |
| 1876 | } |
| 1877 | } |
| 1878 | } |
| 1879 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1880 | /* 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] | 1881 | void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end, |
| 1882 | int dirty_flags) |
| 1883 | { |
| 1884 | CPUState *env; |
| 1885 | unsigned long length, start1; |
| 1886 | int i, mask, len; |
| 1887 | uint8_t *p; |
| 1888 | |
| 1889 | start &= TARGET_PAGE_MASK; |
| 1890 | end = TARGET_PAGE_ALIGN(end); |
| 1891 | |
| 1892 | length = end - start; |
| 1893 | if (length == 0) |
| 1894 | return; |
| 1895 | len = length >> TARGET_PAGE_BITS; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1896 | mask = ~dirty_flags; |
| 1897 | p = phys_ram_dirty + (start >> TARGET_PAGE_BITS); |
| 1898 | for(i = 0; i < len; i++) |
| 1899 | p[i] &= mask; |
| 1900 | |
| 1901 | /* we modify the TLB cache so that the dirty bit will be set again |
| 1902 | when accessing the range */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1903 | start1 = (unsigned long)qemu_get_ram_ptr(start); |
| 1904 | /* Chek that we don't span multiple blocks - this breaks the |
| 1905 | address comparisons below. */ |
| 1906 | if ((unsigned long)qemu_get_ram_ptr(end - 1) - start1 |
| 1907 | != (end - 1) - start) { |
| 1908 | abort(); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1909 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1910 | |
| 1911 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1912 | int mmu_idx; |
| 1913 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { |
| 1914 | for(i = 0; i < CPU_TLB_SIZE; i++) |
| 1915 | tlb_reset_dirty_range(&env->tlb_table[mmu_idx][i], |
| 1916 | start1, length); |
| 1917 | } |
| 1918 | } |
| 1919 | } |
| 1920 | |
| 1921 | int cpu_physical_memory_set_dirty_tracking(int enable) |
| 1922 | { |
| 1923 | in_migration = enable; |
| 1924 | if (kvm_enabled()) { |
| 1925 | return kvm_set_migration_log(enable); |
| 1926 | } |
| 1927 | return 0; |
| 1928 | } |
| 1929 | |
| 1930 | int cpu_physical_memory_get_dirty_tracking(void) |
| 1931 | { |
| 1932 | return in_migration; |
| 1933 | } |
| 1934 | |
| 1935 | int cpu_physical_sync_dirty_bitmap(target_phys_addr_t start_addr, |
| 1936 | target_phys_addr_t end_addr) |
| 1937 | { |
| 1938 | int ret = 0; |
| 1939 | |
| 1940 | if (kvm_enabled()) |
| 1941 | ret = kvm_physical_sync_dirty_bitmap(start_addr, end_addr); |
| 1942 | return ret; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1943 | } |
| 1944 | |
| 1945 | static inline void tlb_update_dirty(CPUTLBEntry *tlb_entry) |
| 1946 | { |
| 1947 | ram_addr_t ram_addr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1948 | void *p; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1949 | |
| 1950 | if ((tlb_entry->addr_write & ~TARGET_PAGE_MASK) == IO_MEM_RAM) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1951 | p = (void *)(unsigned long)((tlb_entry->addr_write & TARGET_PAGE_MASK) |
| 1952 | + tlb_entry->addend); |
| 1953 | ram_addr = qemu_ram_addr_from_host(p); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1954 | if (!cpu_physical_memory_is_dirty(ram_addr)) { |
| 1955 | tlb_entry->addr_write |= TLB_NOTDIRTY; |
| 1956 | } |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | /* update the TLB according to the current state of the dirty bits */ |
| 1961 | void cpu_tlb_update_dirty(CPUState *env) |
| 1962 | { |
| 1963 | int i; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1964 | int mmu_idx; |
| 1965 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) { |
| 1966 | for(i = 0; i < CPU_TLB_SIZE; i++) |
| 1967 | tlb_update_dirty(&env->tlb_table[mmu_idx][i]); |
| 1968 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1969 | } |
| 1970 | |
| 1971 | static inline void tlb_set_dirty1(CPUTLBEntry *tlb_entry, target_ulong vaddr) |
| 1972 | { |
| 1973 | if (tlb_entry->addr_write == (vaddr | TLB_NOTDIRTY)) |
| 1974 | tlb_entry->addr_write = vaddr; |
| 1975 | } |
| 1976 | |
| 1977 | /* update the TLB corresponding to virtual page vaddr |
| 1978 | so that it is no longer dirty */ |
| 1979 | static inline void tlb_set_dirty(CPUState *env, target_ulong vaddr) |
| 1980 | { |
| 1981 | int i; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1982 | int mmu_idx; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 1983 | |
| 1984 | vaddr &= TARGET_PAGE_MASK; |
| 1985 | i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 1986 | for (mmu_idx = 0; mmu_idx < NB_MMU_MODES; mmu_idx++) |
| 1987 | 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] | 1988 | } |
| 1989 | |
| 1990 | /* add a new TLB entry. At most one entry for a given virtual address |
| 1991 | is permitted. Return 0 if OK or 2 if the page could not be mapped |
| 1992 | (can only happen in non SOFTMMU mode for I/O pages or pages |
| 1993 | conflicting with the host address space). */ |
| 1994 | int tlb_set_page_exec(CPUState *env, target_ulong vaddr, |
| 1995 | target_phys_addr_t paddr, int prot, |
| 1996 | int mmu_idx, int is_softmmu) |
| 1997 | { |
| 1998 | PhysPageDesc *p; |
| 1999 | unsigned long pd; |
| 2000 | unsigned int index; |
| 2001 | target_ulong address; |
| 2002 | target_ulong code_address; |
David 'Digit' Turner | d9b6cb9 | 2010-10-20 19:07:28 +0200 | [diff] [blame] | 2003 | ptrdiff_t addend; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2004 | int ret; |
| 2005 | CPUTLBEntry *te; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2006 | CPUWatchpoint *wp; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2007 | target_phys_addr_t iotlb; |
| 2008 | |
| 2009 | p = phys_page_find(paddr >> TARGET_PAGE_BITS); |
| 2010 | if (!p) { |
| 2011 | pd = IO_MEM_UNASSIGNED; |
| 2012 | } else { |
| 2013 | pd = p->phys_offset; |
| 2014 | } |
| 2015 | #if defined(DEBUG_TLB) |
| 2016 | printf("tlb_set_page: vaddr=" TARGET_FMT_lx " paddr=0x%08x prot=%x idx=%d smmu=%d pd=0x%08lx\n", |
| 2017 | vaddr, (int)paddr, prot, mmu_idx, is_softmmu, pd); |
| 2018 | #endif |
| 2019 | |
| 2020 | ret = 0; |
| 2021 | address = vaddr; |
| 2022 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) { |
| 2023 | /* IO memory case (romd handled later) */ |
| 2024 | address |= TLB_MMIO; |
| 2025 | } |
David 'Digit' Turner | d9b6cb9 | 2010-10-20 19:07:28 +0200 | [diff] [blame] | 2026 | 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] | 2027 | if ((pd & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) { |
| 2028 | /* Normal RAM. */ |
| 2029 | iotlb = pd & TARGET_PAGE_MASK; |
| 2030 | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM) |
| 2031 | iotlb |= IO_MEM_NOTDIRTY; |
| 2032 | else |
| 2033 | iotlb |= IO_MEM_ROM; |
| 2034 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2035 | /* IO handlers are currently passed a physical address. |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2036 | It would be nice to pass an offset from the base address |
| 2037 | of that region. This would avoid having to special case RAM, |
| 2038 | and avoid full address decoding in every device. |
| 2039 | We can't use the high bits of pd for this because |
| 2040 | IO_MEM_ROMD uses these as a ram address. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2041 | iotlb = (pd & ~TARGET_PAGE_MASK); |
| 2042 | if (p) { |
| 2043 | iotlb += p->region_offset; |
| 2044 | } else { |
| 2045 | iotlb += paddr; |
| 2046 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2047 | } |
| 2048 | |
| 2049 | code_address = address; |
| 2050 | /* Make accesses to pages with watchpoints go via the |
| 2051 | watchpoint trap routines. */ |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2052 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2053 | if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2054 | iotlb = io_mem_watch + paddr; |
| 2055 | /* TODO: The memory case can be optimized by not trapping |
| 2056 | reads of pages with a write breakpoint. */ |
| 2057 | address |= TLB_MMIO; |
| 2058 | } |
| 2059 | } |
| 2060 | |
| 2061 | index = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1); |
| 2062 | env->iotlb[mmu_idx][index] = iotlb - vaddr; |
| 2063 | te = &env->tlb_table[mmu_idx][index]; |
| 2064 | te->addend = addend - vaddr; |
| 2065 | if (prot & PAGE_READ) { |
| 2066 | te->addr_read = address; |
| 2067 | } else { |
| 2068 | te->addr_read = -1; |
| 2069 | } |
| 2070 | |
| 2071 | if (prot & PAGE_EXEC) { |
| 2072 | te->addr_code = code_address; |
| 2073 | } else { |
| 2074 | te->addr_code = -1; |
| 2075 | } |
| 2076 | if (prot & PAGE_WRITE) { |
| 2077 | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM || |
| 2078 | (pd & IO_MEM_ROMD)) { |
| 2079 | /* Write access calls the I/O callback. */ |
| 2080 | te->addr_write = address | TLB_MMIO; |
| 2081 | } else if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && |
| 2082 | !cpu_physical_memory_is_dirty(pd)) { |
| 2083 | te->addr_write = address | TLB_NOTDIRTY; |
| 2084 | } else { |
| 2085 | te->addr_write = address; |
| 2086 | } |
| 2087 | } else { |
| 2088 | te->addr_write = -1; |
| 2089 | } |
Vladimir Chtchetkine | 5389aa1 | 2010-02-16 10:38:35 -0800 | [diff] [blame] | 2090 | |
| 2091 | #ifdef CONFIG_MEMCHECK |
| 2092 | /* |
| 2093 | * If we have memchecker running, we need to make sure that page, cached |
| 2094 | * into TLB as the result of this operation will comply with our requirement |
| 2095 | * to cause __ld/__stx_mmu being called for memory access on the pages |
| 2096 | * containing memory blocks that require access violation checks. |
| 2097 | * |
| 2098 | * We need to check with memory checker if we should invalidate this page |
| 2099 | * iff: |
| 2100 | * - Memchecking is enabled. |
| 2101 | * - Page that's been cached belongs to the user space. |
| 2102 | * - Request to cache this page didn't come from softmmu. We're covered |
| 2103 | * there, because after page was cached here we will invalidate it in |
| 2104 | * the __ld/__stx_mmu wrapper. |
| 2105 | * - Cached page belongs to RAM, not I/O area. |
| 2106 | * - Page is cached for read, or write access. |
| 2107 | */ |
| 2108 | if (memcheck_instrument_mmu && mmu_idx == 1 && !is_softmmu && |
| 2109 | (pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && |
| 2110 | (prot & (PAGE_READ | PAGE_WRITE)) && |
| 2111 | memcheck_is_checked(vaddr & TARGET_PAGE_MASK, TARGET_PAGE_SIZE)) { |
| 2112 | if (prot & PAGE_READ) { |
| 2113 | te->addr_read ^= TARGET_PAGE_MASK; |
| 2114 | } |
| 2115 | if (prot & PAGE_WRITE) { |
| 2116 | te->addr_write ^= TARGET_PAGE_MASK; |
| 2117 | } |
| 2118 | } |
| 2119 | #endif // CONFIG_MEMCHECK |
| 2120 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2121 | return ret; |
| 2122 | } |
| 2123 | |
| 2124 | #else |
| 2125 | |
| 2126 | void tlb_flush(CPUState *env, int flush_global) |
| 2127 | { |
| 2128 | } |
| 2129 | |
| 2130 | void tlb_flush_page(CPUState *env, target_ulong addr) |
| 2131 | { |
| 2132 | } |
| 2133 | |
| 2134 | int tlb_set_page_exec(CPUState *env, target_ulong vaddr, |
| 2135 | target_phys_addr_t paddr, int prot, |
| 2136 | int mmu_idx, int is_softmmu) |
| 2137 | { |
| 2138 | return 0; |
| 2139 | } |
| 2140 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2141 | /* |
| 2142 | * Walks guest process memory "regions" one by one |
| 2143 | * and calls callback function 'fn' for each region. |
| 2144 | */ |
| 2145 | int walk_memory_regions(void *priv, |
| 2146 | int (*fn)(void *, unsigned long, unsigned long, unsigned long)) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2147 | { |
| 2148 | unsigned long start, end; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2149 | PageDesc *p = NULL; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2150 | int i, j, prot, prot1; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2151 | int rc = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2152 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2153 | start = end = -1; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2154 | prot = 0; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2155 | |
| 2156 | for (i = 0; i <= L1_SIZE; i++) { |
| 2157 | p = (i < L1_SIZE) ? l1_map[i] : NULL; |
| 2158 | for (j = 0; j < L2_SIZE; j++) { |
| 2159 | prot1 = (p == NULL) ? 0 : p[j].flags; |
| 2160 | /* |
| 2161 | * "region" is one continuous chunk of memory |
| 2162 | * that has same protection flags set. |
| 2163 | */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2164 | if (prot1 != prot) { |
| 2165 | end = (i << (32 - L1_BITS)) | (j << TARGET_PAGE_BITS); |
| 2166 | if (start != -1) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2167 | rc = (*fn)(priv, start, end, prot); |
| 2168 | /* callback can stop iteration by returning != 0 */ |
| 2169 | if (rc != 0) |
| 2170 | return (rc); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2171 | } |
| 2172 | if (prot1 != 0) |
| 2173 | start = end; |
| 2174 | else |
| 2175 | start = -1; |
| 2176 | prot = prot1; |
| 2177 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2178 | if (p == NULL) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2179 | break; |
| 2180 | } |
| 2181 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2182 | return (rc); |
| 2183 | } |
| 2184 | |
| 2185 | static int dump_region(void *priv, unsigned long start, |
| 2186 | unsigned long end, unsigned long prot) |
| 2187 | { |
| 2188 | FILE *f = (FILE *)priv; |
| 2189 | |
| 2190 | (void) fprintf(f, "%08lx-%08lx %08lx %c%c%c\n", |
| 2191 | start, end, end - start, |
| 2192 | ((prot & PAGE_READ) ? 'r' : '-'), |
| 2193 | ((prot & PAGE_WRITE) ? 'w' : '-'), |
| 2194 | ((prot & PAGE_EXEC) ? 'x' : '-')); |
| 2195 | |
| 2196 | return (0); |
| 2197 | } |
| 2198 | |
| 2199 | /* dump memory mappings */ |
| 2200 | void page_dump(FILE *f) |
| 2201 | { |
| 2202 | (void) fprintf(f, "%-8s %-8s %-8s %s\n", |
| 2203 | "start", "end", "size", "prot"); |
| 2204 | walk_memory_regions(f, dump_region); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2205 | } |
| 2206 | |
| 2207 | int page_get_flags(target_ulong address) |
| 2208 | { |
| 2209 | PageDesc *p; |
| 2210 | |
| 2211 | p = page_find(address >> TARGET_PAGE_BITS); |
| 2212 | if (!p) |
| 2213 | return 0; |
| 2214 | return p->flags; |
| 2215 | } |
| 2216 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2217 | /* Modify the flags of a page and invalidate the code if necessary. |
| 2218 | The flag PAGE_WRITE_ORG is positioned automatically depending |
| 2219 | 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] | 2220 | void page_set_flags(target_ulong start, target_ulong end, int flags) |
| 2221 | { |
| 2222 | PageDesc *p; |
| 2223 | target_ulong addr; |
| 2224 | |
| 2225 | /* mmap_lock should already be held. */ |
| 2226 | start = start & TARGET_PAGE_MASK; |
| 2227 | end = TARGET_PAGE_ALIGN(end); |
| 2228 | if (flags & PAGE_WRITE) |
| 2229 | flags |= PAGE_WRITE_ORG; |
| 2230 | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) { |
| 2231 | p = page_find_alloc(addr >> TARGET_PAGE_BITS); |
| 2232 | /* We may be called for host regions that are outside guest |
| 2233 | address space. */ |
| 2234 | if (!p) |
| 2235 | return; |
| 2236 | /* if the write protection is set, then we invalidate the code |
| 2237 | inside */ |
| 2238 | if (!(p->flags & PAGE_WRITE) && |
| 2239 | (flags & PAGE_WRITE) && |
| 2240 | p->first_tb) { |
| 2241 | tb_invalidate_phys_page(addr, 0, NULL); |
| 2242 | } |
| 2243 | p->flags = flags; |
| 2244 | } |
| 2245 | } |
| 2246 | |
| 2247 | int page_check_range(target_ulong start, target_ulong len, int flags) |
| 2248 | { |
| 2249 | PageDesc *p; |
| 2250 | target_ulong end; |
| 2251 | target_ulong addr; |
| 2252 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2253 | if (start + len < start) |
| 2254 | /* we've wrapped around */ |
| 2255 | return -1; |
| 2256 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2257 | end = TARGET_PAGE_ALIGN(start+len); /* must do before we loose bits in the next step */ |
| 2258 | start = start & TARGET_PAGE_MASK; |
| 2259 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2260 | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) { |
| 2261 | p = page_find(addr >> TARGET_PAGE_BITS); |
| 2262 | if( !p ) |
| 2263 | return -1; |
| 2264 | if( !(p->flags & PAGE_VALID) ) |
| 2265 | return -1; |
| 2266 | |
| 2267 | if ((flags & PAGE_READ) && !(p->flags & PAGE_READ)) |
| 2268 | return -1; |
| 2269 | if (flags & PAGE_WRITE) { |
| 2270 | if (!(p->flags & PAGE_WRITE_ORG)) |
| 2271 | return -1; |
| 2272 | /* unprotect the page if it was put read-only because it |
| 2273 | contains translated code */ |
| 2274 | if (!(p->flags & PAGE_WRITE)) { |
| 2275 | if (!page_unprotect(addr, 0, NULL)) |
| 2276 | return -1; |
| 2277 | } |
| 2278 | return 0; |
| 2279 | } |
| 2280 | } |
| 2281 | return 0; |
| 2282 | } |
| 2283 | |
| 2284 | /* called from signal handler: invalidate the code and unprotect the |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2285 | page. Return TRUE if the fault was successfully handled. */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2286 | int page_unprotect(target_ulong address, unsigned long pc, void *puc) |
| 2287 | { |
| 2288 | unsigned int page_index, prot, pindex; |
| 2289 | PageDesc *p, *p1; |
| 2290 | target_ulong host_start, host_end, addr; |
| 2291 | |
| 2292 | /* Technically this isn't safe inside a signal handler. However we |
| 2293 | know this only ever happens in a synchronous SEGV handler, so in |
| 2294 | practice it seems to be ok. */ |
| 2295 | mmap_lock(); |
| 2296 | |
| 2297 | host_start = address & qemu_host_page_mask; |
| 2298 | page_index = host_start >> TARGET_PAGE_BITS; |
| 2299 | p1 = page_find(page_index); |
| 2300 | if (!p1) { |
| 2301 | mmap_unlock(); |
| 2302 | return 0; |
| 2303 | } |
| 2304 | host_end = host_start + qemu_host_page_size; |
| 2305 | p = p1; |
| 2306 | prot = 0; |
| 2307 | for(addr = host_start;addr < host_end; addr += TARGET_PAGE_SIZE) { |
| 2308 | prot |= p->flags; |
| 2309 | p++; |
| 2310 | } |
| 2311 | /* if the page was really writable, then we change its |
| 2312 | protection back to writable */ |
| 2313 | if (prot & PAGE_WRITE_ORG) { |
| 2314 | pindex = (address - host_start) >> TARGET_PAGE_BITS; |
| 2315 | if (!(p1[pindex].flags & PAGE_WRITE)) { |
| 2316 | mprotect((void *)g2h(host_start), qemu_host_page_size, |
| 2317 | (prot & PAGE_BITS) | PAGE_WRITE); |
| 2318 | p1[pindex].flags |= PAGE_WRITE; |
| 2319 | /* and since the content will be modified, we must invalidate |
| 2320 | the corresponding translated code. */ |
| 2321 | tb_invalidate_phys_page(address, pc, puc); |
| 2322 | #ifdef DEBUG_TB_CHECK |
| 2323 | tb_invalidate_check(address); |
| 2324 | #endif |
| 2325 | mmap_unlock(); |
| 2326 | return 1; |
| 2327 | } |
| 2328 | } |
| 2329 | mmap_unlock(); |
| 2330 | return 0; |
| 2331 | } |
| 2332 | |
| 2333 | static inline void tlb_set_dirty(CPUState *env, |
| 2334 | unsigned long addr, target_ulong vaddr) |
| 2335 | { |
| 2336 | } |
| 2337 | #endif /* defined(CONFIG_USER_ONLY) */ |
| 2338 | |
| 2339 | #if !defined(CONFIG_USER_ONLY) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2340 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2341 | 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] | 2342 | ram_addr_t memory, ram_addr_t region_offset); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2343 | 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] | 2344 | 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] | 2345 | #define CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2, \ |
| 2346 | need_subpage) \ |
| 2347 | do { \ |
| 2348 | if (addr > start_addr) \ |
| 2349 | start_addr2 = 0; \ |
| 2350 | else { \ |
| 2351 | start_addr2 = start_addr & ~TARGET_PAGE_MASK; \ |
| 2352 | if (start_addr2 > 0) \ |
| 2353 | need_subpage = 1; \ |
| 2354 | } \ |
| 2355 | \ |
| 2356 | if ((start_addr + orig_size) - addr >= TARGET_PAGE_SIZE) \ |
| 2357 | end_addr2 = TARGET_PAGE_SIZE - 1; \ |
| 2358 | else { \ |
| 2359 | end_addr2 = (start_addr + orig_size - 1) & ~TARGET_PAGE_MASK; \ |
| 2360 | if (end_addr2 < TARGET_PAGE_SIZE - 1) \ |
| 2361 | need_subpage = 1; \ |
| 2362 | } \ |
| 2363 | } while (0) |
| 2364 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2365 | /* register physical memory. |
| 2366 | For RAM, 'size' must be a multiple of the target page size. |
| 2367 | If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2368 | io memory page. The address used when calling the IO function is |
| 2369 | the offset from the start of the region, plus region_offset. Both |
| 2370 | start_addr and region_offset are rounded down to a page boundary |
| 2371 | before calculating this offset. This should not be a problem unless |
| 2372 | the low bits of start_addr and region_offset differ. */ |
| 2373 | void cpu_register_physical_memory_offset(target_phys_addr_t start_addr, |
| 2374 | ram_addr_t size, |
| 2375 | ram_addr_t phys_offset, |
| 2376 | ram_addr_t region_offset) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2377 | { |
| 2378 | target_phys_addr_t addr, end_addr; |
| 2379 | PhysPageDesc *p; |
| 2380 | CPUState *env; |
| 2381 | ram_addr_t orig_size = size; |
| 2382 | void *subpage; |
| 2383 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2384 | if (kvm_enabled()) |
| 2385 | kvm_set_phys_mem(start_addr, size, phys_offset); |
| 2386 | |
| 2387 | if (phys_offset == IO_MEM_UNASSIGNED) { |
| 2388 | region_offset = start_addr; |
| 2389 | } |
| 2390 | region_offset &= TARGET_PAGE_MASK; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2391 | size = (size + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK; |
| 2392 | end_addr = start_addr + (target_phys_addr_t)size; |
| 2393 | for(addr = start_addr; addr != end_addr; addr += TARGET_PAGE_SIZE) { |
| 2394 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 2395 | if (p && p->phys_offset != IO_MEM_UNASSIGNED) { |
| 2396 | ram_addr_t orig_memory = p->phys_offset; |
| 2397 | target_phys_addr_t start_addr2, end_addr2; |
| 2398 | int need_subpage = 0; |
| 2399 | |
| 2400 | CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, end_addr2, |
| 2401 | need_subpage); |
| 2402 | if (need_subpage || phys_offset & IO_MEM_SUBWIDTH) { |
| 2403 | if (!(orig_memory & IO_MEM_SUBPAGE)) { |
| 2404 | subpage = subpage_init((addr & TARGET_PAGE_MASK), |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2405 | &p->phys_offset, orig_memory, |
| 2406 | p->region_offset); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2407 | } else { |
| 2408 | subpage = io_mem_opaque[(orig_memory & ~TARGET_PAGE_MASK) |
| 2409 | >> IO_MEM_SHIFT]; |
| 2410 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2411 | subpage_register(subpage, start_addr2, end_addr2, phys_offset, |
| 2412 | region_offset); |
| 2413 | p->region_offset = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2414 | } else { |
| 2415 | p->phys_offset = phys_offset; |
| 2416 | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM || |
| 2417 | (phys_offset & IO_MEM_ROMD)) |
| 2418 | phys_offset += TARGET_PAGE_SIZE; |
| 2419 | } |
| 2420 | } else { |
| 2421 | p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS, 1); |
| 2422 | p->phys_offset = phys_offset; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2423 | p->region_offset = region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2424 | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM || |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2425 | (phys_offset & IO_MEM_ROMD)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2426 | phys_offset += TARGET_PAGE_SIZE; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2427 | } else { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2428 | target_phys_addr_t start_addr2, end_addr2; |
| 2429 | int need_subpage = 0; |
| 2430 | |
| 2431 | CHECK_SUBPAGE(addr, start_addr, start_addr2, end_addr, |
| 2432 | end_addr2, need_subpage); |
| 2433 | |
| 2434 | if (need_subpage || phys_offset & IO_MEM_SUBWIDTH) { |
| 2435 | subpage = subpage_init((addr & TARGET_PAGE_MASK), |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2436 | &p->phys_offset, IO_MEM_UNASSIGNED, |
| 2437 | addr & TARGET_PAGE_MASK); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2438 | subpage_register(subpage, start_addr2, end_addr2, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2439 | phys_offset, region_offset); |
| 2440 | p->region_offset = 0; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2441 | } |
| 2442 | } |
| 2443 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2444 | region_offset += TARGET_PAGE_SIZE; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2445 | } |
| 2446 | |
| 2447 | /* since each CPU stores ram addresses in its TLB cache, we must |
| 2448 | reset the modified entries */ |
| 2449 | /* XXX: slow ! */ |
| 2450 | for(env = first_cpu; env != NULL; env = env->next_cpu) { |
| 2451 | tlb_flush(env, 1); |
| 2452 | } |
| 2453 | } |
| 2454 | |
| 2455 | /* XXX: temporary until new memory mapping API */ |
| 2456 | ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr) |
| 2457 | { |
| 2458 | PhysPageDesc *p; |
| 2459 | |
| 2460 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 2461 | if (!p) |
| 2462 | return IO_MEM_UNASSIGNED; |
| 2463 | return p->phys_offset; |
| 2464 | } |
| 2465 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2466 | void qemu_register_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
| 2467 | { |
| 2468 | if (kvm_enabled()) |
| 2469 | kvm_coalesce_mmio_region(addr, size); |
| 2470 | } |
| 2471 | |
| 2472 | void qemu_unregister_coalesced_mmio(target_phys_addr_t addr, ram_addr_t size) |
| 2473 | { |
| 2474 | if (kvm_enabled()) |
| 2475 | kvm_uncoalesce_mmio_region(addr, size); |
| 2476 | } |
| 2477 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2478 | ram_addr_t qemu_ram_alloc(ram_addr_t size) |
| 2479 | { |
| 2480 | RAMBlock *new_block; |
| 2481 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2482 | size = TARGET_PAGE_ALIGN(size); |
| 2483 | new_block = qemu_malloc(sizeof(*new_block)); |
| 2484 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2485 | #if defined(TARGET_S390X) && defined(CONFIG_KVM) |
| 2486 | /* XXX S390 KVM requires the topmost vma of the RAM to be < 256GB */ |
| 2487 | new_block->host = mmap((void*)0x1000000, size, PROT_EXEC|PROT_READ|PROT_WRITE, |
| 2488 | MAP_SHARED | MAP_ANONYMOUS, -1, 0); |
| 2489 | #else |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2490 | new_block->host = qemu_vmalloc(size); |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2491 | #endif |
| 2492 | #ifdef MADV_MERGEABLE |
| 2493 | madvise(new_block->host, size, MADV_MERGEABLE); |
| 2494 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2495 | new_block->offset = last_ram_offset; |
| 2496 | new_block->length = size; |
| 2497 | |
| 2498 | new_block->next = ram_blocks; |
| 2499 | ram_blocks = new_block; |
| 2500 | |
| 2501 | phys_ram_dirty = qemu_realloc(phys_ram_dirty, |
| 2502 | (last_ram_offset + size) >> TARGET_PAGE_BITS); |
| 2503 | memset(phys_ram_dirty + (last_ram_offset >> TARGET_PAGE_BITS), |
| 2504 | 0xff, size >> TARGET_PAGE_BITS); |
| 2505 | |
| 2506 | last_ram_offset += size; |
| 2507 | |
| 2508 | if (kvm_enabled()) |
| 2509 | kvm_setup_guest_memory(new_block->host, size); |
| 2510 | |
| 2511 | return new_block->offset; |
| 2512 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2513 | |
| 2514 | void qemu_ram_free(ram_addr_t addr) |
| 2515 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2516 | /* TODO: implement this. */ |
| 2517 | } |
| 2518 | |
| 2519 | /* Return a host pointer to ram allocated with qemu_ram_alloc. |
| 2520 | With the exception of the softmmu code in this file, this should |
| 2521 | only be used for local memory (e.g. video ram) that the device owns, |
| 2522 | and knows it isn't going to access beyond the end of the block. |
| 2523 | |
| 2524 | It should not be used for general purpose DMA. |
| 2525 | Use cpu_physical_memory_map/cpu_physical_memory_rw instead. |
| 2526 | */ |
| 2527 | void *qemu_get_ram_ptr(ram_addr_t addr) |
| 2528 | { |
| 2529 | RAMBlock *prev; |
| 2530 | RAMBlock **prevp; |
| 2531 | RAMBlock *block; |
| 2532 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2533 | prev = NULL; |
| 2534 | prevp = &ram_blocks; |
| 2535 | block = ram_blocks; |
| 2536 | while (block && (block->offset > addr |
| 2537 | || block->offset + block->length <= addr)) { |
| 2538 | if (prev) |
| 2539 | prevp = &prev->next; |
| 2540 | prev = block; |
| 2541 | block = block->next; |
| 2542 | } |
| 2543 | if (!block) { |
| 2544 | fprintf(stderr, "Bad ram offset %" PRIx64 "\n", (uint64_t)addr); |
| 2545 | abort(); |
| 2546 | } |
| 2547 | /* Move this entry to to start of the list. */ |
| 2548 | if (prev) { |
| 2549 | prev->next = block->next; |
| 2550 | block->next = *prevp; |
| 2551 | *prevp = block; |
| 2552 | } |
| 2553 | return block->host + (addr - block->offset); |
| 2554 | } |
| 2555 | |
| 2556 | /* Some of the softmmu routines need to translate from a host pointer |
| 2557 | (typically a TLB entry) back to a ram offset. */ |
| 2558 | ram_addr_t qemu_ram_addr_from_host(void *ptr) |
| 2559 | { |
| 2560 | RAMBlock *prev; |
| 2561 | RAMBlock **prevp; |
| 2562 | RAMBlock *block; |
| 2563 | uint8_t *host = ptr; |
| 2564 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2565 | prev = NULL; |
| 2566 | prevp = &ram_blocks; |
| 2567 | block = ram_blocks; |
| 2568 | while (block && (block->host > host |
| 2569 | || block->host + block->length <= host)) { |
| 2570 | if (prev) |
| 2571 | prevp = &prev->next; |
| 2572 | prev = block; |
| 2573 | block = block->next; |
| 2574 | } |
| 2575 | if (!block) { |
| 2576 | fprintf(stderr, "Bad ram pointer %p\n", ptr); |
| 2577 | abort(); |
| 2578 | } |
| 2579 | return block->offset + (host - block->host); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2580 | } |
| 2581 | |
| 2582 | static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr) |
| 2583 | { |
| 2584 | #ifdef DEBUG_UNASSIGNED |
| 2585 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); |
| 2586 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2587 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2588 | do_unassigned_access(addr, 0, 0, 0, 1); |
| 2589 | #endif |
| 2590 | return 0; |
| 2591 | } |
| 2592 | |
| 2593 | static uint32_t unassigned_mem_readw(void *opaque, target_phys_addr_t addr) |
| 2594 | { |
| 2595 | #ifdef DEBUG_UNASSIGNED |
| 2596 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); |
| 2597 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2598 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2599 | do_unassigned_access(addr, 0, 0, 0, 2); |
| 2600 | #endif |
| 2601 | return 0; |
| 2602 | } |
| 2603 | |
| 2604 | static uint32_t unassigned_mem_readl(void *opaque, target_phys_addr_t addr) |
| 2605 | { |
| 2606 | #ifdef DEBUG_UNASSIGNED |
| 2607 | printf("Unassigned mem read " TARGET_FMT_plx "\n", addr); |
| 2608 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2609 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2610 | do_unassigned_access(addr, 0, 0, 0, 4); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2611 | #endif |
| 2612 | return 0; |
| 2613 | } |
| 2614 | |
| 2615 | static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 2616 | { |
| 2617 | #ifdef DEBUG_UNASSIGNED |
| 2618 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); |
| 2619 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2620 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2621 | do_unassigned_access(addr, 1, 0, 0, 1); |
| 2622 | #endif |
| 2623 | } |
| 2624 | |
| 2625 | static void unassigned_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 2626 | { |
| 2627 | #ifdef DEBUG_UNASSIGNED |
| 2628 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); |
| 2629 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2630 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2631 | do_unassigned_access(addr, 1, 0, 0, 2); |
| 2632 | #endif |
| 2633 | } |
| 2634 | |
| 2635 | static void unassigned_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 2636 | { |
| 2637 | #ifdef DEBUG_UNASSIGNED |
| 2638 | printf("Unassigned mem write " TARGET_FMT_plx " = 0x%x\n", addr, val); |
| 2639 | #endif |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2640 | #if defined(TARGET_SPARC) || defined(TARGET_MICROBLAZE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2641 | do_unassigned_access(addr, 1, 0, 0, 4); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2642 | #endif |
| 2643 | } |
| 2644 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2645 | static CPUReadMemoryFunc * const unassigned_mem_read[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2646 | unassigned_mem_readb, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2647 | unassigned_mem_readw, |
| 2648 | unassigned_mem_readl, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2649 | }; |
| 2650 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2651 | static CPUWriteMemoryFunc * const unassigned_mem_write[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2652 | unassigned_mem_writeb, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2653 | unassigned_mem_writew, |
| 2654 | unassigned_mem_writel, |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2655 | }; |
| 2656 | |
| 2657 | static void notdirty_mem_writeb(void *opaque, target_phys_addr_t ram_addr, |
| 2658 | uint32_t val) |
| 2659 | { |
| 2660 | int dirty_flags; |
| 2661 | dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS]; |
| 2662 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
| 2663 | #if !defined(CONFIG_USER_ONLY) |
| 2664 | tb_invalidate_phys_page_fast(ram_addr, 1); |
| 2665 | dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS]; |
| 2666 | #endif |
| 2667 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2668 | stb_p(qemu_get_ram_ptr(ram_addr), val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2669 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
| 2670 | phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags; |
| 2671 | /* we remove the notdirty callback only if the code has been |
| 2672 | flushed */ |
| 2673 | if (dirty_flags == 0xff) |
| 2674 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
| 2675 | } |
| 2676 | |
| 2677 | static void notdirty_mem_writew(void *opaque, target_phys_addr_t ram_addr, |
| 2678 | uint32_t val) |
| 2679 | { |
| 2680 | int dirty_flags; |
| 2681 | dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS]; |
| 2682 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
| 2683 | #if !defined(CONFIG_USER_ONLY) |
| 2684 | tb_invalidate_phys_page_fast(ram_addr, 2); |
| 2685 | dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS]; |
| 2686 | #endif |
| 2687 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2688 | stw_p(qemu_get_ram_ptr(ram_addr), val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2689 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
| 2690 | phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags; |
| 2691 | /* we remove the notdirty callback only if the code has been |
| 2692 | flushed */ |
| 2693 | if (dirty_flags == 0xff) |
| 2694 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
| 2695 | } |
| 2696 | |
| 2697 | static void notdirty_mem_writel(void *opaque, target_phys_addr_t ram_addr, |
| 2698 | uint32_t val) |
| 2699 | { |
| 2700 | int dirty_flags; |
| 2701 | dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS]; |
| 2702 | if (!(dirty_flags & CODE_DIRTY_FLAG)) { |
| 2703 | #if !defined(CONFIG_USER_ONLY) |
| 2704 | tb_invalidate_phys_page_fast(ram_addr, 4); |
| 2705 | dirty_flags = phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS]; |
| 2706 | #endif |
| 2707 | } |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2708 | stl_p(qemu_get_ram_ptr(ram_addr), val); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2709 | dirty_flags |= (0xff & ~CODE_DIRTY_FLAG); |
| 2710 | phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags; |
| 2711 | /* we remove the notdirty callback only if the code has been |
| 2712 | flushed */ |
| 2713 | if (dirty_flags == 0xff) |
| 2714 | tlb_set_dirty(cpu_single_env, cpu_single_env->mem_io_vaddr); |
| 2715 | } |
| 2716 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2717 | static CPUReadMemoryFunc * const error_mem_read[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2718 | NULL, /* never used */ |
| 2719 | NULL, /* never used */ |
| 2720 | NULL, /* never used */ |
| 2721 | }; |
| 2722 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2723 | static CPUWriteMemoryFunc * const notdirty_mem_write[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2724 | notdirty_mem_writeb, |
| 2725 | notdirty_mem_writew, |
| 2726 | notdirty_mem_writel, |
| 2727 | }; |
| 2728 | |
| 2729 | /* Generate a debug exception if a watchpoint has been hit. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2730 | 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] | 2731 | { |
| 2732 | CPUState *env = cpu_single_env; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2733 | target_ulong pc, cs_base; |
| 2734 | TranslationBlock *tb; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2735 | target_ulong vaddr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2736 | CPUWatchpoint *wp; |
| 2737 | int cpu_flags; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2738 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2739 | if (env->watchpoint_hit) { |
| 2740 | /* We re-entered the check after replacing the TB. Now raise |
| 2741 | * the debug interrupt so that is will trigger after the |
| 2742 | * current instruction. */ |
| 2743 | cpu_interrupt(env, CPU_INTERRUPT_DEBUG); |
| 2744 | return; |
| 2745 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2746 | vaddr = (env->mem_io_vaddr & TARGET_PAGE_MASK) + offset; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2747 | QTAILQ_FOREACH(wp, &env->watchpoints, entry) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2748 | if ((vaddr == (wp->vaddr & len_mask) || |
| 2749 | (vaddr & wp->len_mask) == wp->vaddr) && (wp->flags & flags)) { |
| 2750 | wp->flags |= BP_WATCHPOINT_HIT; |
| 2751 | if (!env->watchpoint_hit) { |
| 2752 | env->watchpoint_hit = wp; |
| 2753 | tb = tb_find_pc(env->mem_io_pc); |
| 2754 | if (!tb) { |
| 2755 | cpu_abort(env, "check_watchpoint: could not find TB for " |
| 2756 | "pc=%p", (void *)env->mem_io_pc); |
| 2757 | } |
| 2758 | cpu_restore_state(tb, env, env->mem_io_pc, NULL); |
| 2759 | tb_phys_invalidate(tb, -1); |
| 2760 | if (wp->flags & BP_STOP_BEFORE_ACCESS) { |
| 2761 | env->exception_index = EXCP_DEBUG; |
| 2762 | } else { |
| 2763 | cpu_get_tb_cpu_state(env, &pc, &cs_base, &cpu_flags); |
| 2764 | tb_gen_code(env, pc, cs_base, cpu_flags, 1); |
| 2765 | } |
| 2766 | cpu_resume_from_signal(env, NULL); |
| 2767 | } |
| 2768 | } else { |
| 2769 | wp->flags &= ~BP_WATCHPOINT_HIT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2770 | } |
| 2771 | } |
| 2772 | } |
| 2773 | |
| 2774 | /* Watchpoint access routines. Watchpoints are inserted using TLB tricks, |
| 2775 | so these check for a hit then pass through to the normal out-of-line |
| 2776 | phys routines. */ |
| 2777 | static uint32_t watch_mem_readb(void *opaque, target_phys_addr_t addr) |
| 2778 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2779 | 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] | 2780 | return ldub_phys(addr); |
| 2781 | } |
| 2782 | |
| 2783 | static uint32_t watch_mem_readw(void *opaque, target_phys_addr_t addr) |
| 2784 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2785 | 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] | 2786 | return lduw_phys(addr); |
| 2787 | } |
| 2788 | |
| 2789 | static uint32_t watch_mem_readl(void *opaque, target_phys_addr_t addr) |
| 2790 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2791 | 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] | 2792 | return ldl_phys(addr); |
| 2793 | } |
| 2794 | |
| 2795 | static void watch_mem_writeb(void *opaque, target_phys_addr_t addr, |
| 2796 | uint32_t val) |
| 2797 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2798 | 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] | 2799 | stb_phys(addr, val); |
| 2800 | } |
| 2801 | |
| 2802 | static void watch_mem_writew(void *opaque, target_phys_addr_t addr, |
| 2803 | uint32_t val) |
| 2804 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2805 | 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] | 2806 | stw_phys(addr, val); |
| 2807 | } |
| 2808 | |
| 2809 | static void watch_mem_writel(void *opaque, target_phys_addr_t addr, |
| 2810 | uint32_t val) |
| 2811 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2812 | 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] | 2813 | stl_phys(addr, val); |
| 2814 | } |
| 2815 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2816 | static CPUReadMemoryFunc * const watch_mem_read[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2817 | watch_mem_readb, |
| 2818 | watch_mem_readw, |
| 2819 | watch_mem_readl, |
| 2820 | }; |
| 2821 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2822 | static CPUWriteMemoryFunc * const watch_mem_write[3] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2823 | watch_mem_writeb, |
| 2824 | watch_mem_writew, |
| 2825 | watch_mem_writel, |
| 2826 | }; |
| 2827 | |
| 2828 | static inline uint32_t subpage_readlen (subpage_t *mmio, target_phys_addr_t addr, |
| 2829 | unsigned int len) |
| 2830 | { |
| 2831 | uint32_t ret; |
| 2832 | unsigned int idx; |
| 2833 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2834 | idx = SUBPAGE_IDX(addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2835 | #if defined(DEBUG_SUBPAGE) |
| 2836 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d\n", __func__, |
| 2837 | mmio, len, addr, idx); |
| 2838 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2839 | ret = (**mmio->mem_read[idx][len])(mmio->opaque[idx][0][len], |
| 2840 | addr + mmio->region_offset[idx][0][len]); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2841 | |
| 2842 | return ret; |
| 2843 | } |
| 2844 | |
| 2845 | static inline void subpage_writelen (subpage_t *mmio, target_phys_addr_t addr, |
| 2846 | uint32_t value, unsigned int len) |
| 2847 | { |
| 2848 | unsigned int idx; |
| 2849 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2850 | idx = SUBPAGE_IDX(addr); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2851 | #if defined(DEBUG_SUBPAGE) |
| 2852 | printf("%s: subpage %p len %d addr " TARGET_FMT_plx " idx %d value %08x\n", __func__, |
| 2853 | mmio, len, addr, idx, value); |
| 2854 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2855 | (**mmio->mem_write[idx][len])(mmio->opaque[idx][1][len], |
| 2856 | addr + mmio->region_offset[idx][1][len], |
| 2857 | value); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2858 | } |
| 2859 | |
| 2860 | static uint32_t subpage_readb (void *opaque, target_phys_addr_t addr) |
| 2861 | { |
| 2862 | #if defined(DEBUG_SUBPAGE) |
| 2863 | printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 2864 | #endif |
| 2865 | |
| 2866 | return subpage_readlen(opaque, addr, 0); |
| 2867 | } |
| 2868 | |
| 2869 | static void subpage_writeb (void *opaque, target_phys_addr_t addr, |
| 2870 | uint32_t value) |
| 2871 | { |
| 2872 | #if defined(DEBUG_SUBPAGE) |
| 2873 | printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value); |
| 2874 | #endif |
| 2875 | subpage_writelen(opaque, addr, value, 0); |
| 2876 | } |
| 2877 | |
| 2878 | static uint32_t subpage_readw (void *opaque, target_phys_addr_t addr) |
| 2879 | { |
| 2880 | #if defined(DEBUG_SUBPAGE) |
| 2881 | printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 2882 | #endif |
| 2883 | |
| 2884 | return subpage_readlen(opaque, addr, 1); |
| 2885 | } |
| 2886 | |
| 2887 | static void subpage_writew (void *opaque, target_phys_addr_t addr, |
| 2888 | uint32_t value) |
| 2889 | { |
| 2890 | #if defined(DEBUG_SUBPAGE) |
| 2891 | printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value); |
| 2892 | #endif |
| 2893 | subpage_writelen(opaque, addr, value, 1); |
| 2894 | } |
| 2895 | |
| 2896 | static uint32_t subpage_readl (void *opaque, target_phys_addr_t addr) |
| 2897 | { |
| 2898 | #if defined(DEBUG_SUBPAGE) |
| 2899 | printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); |
| 2900 | #endif |
| 2901 | |
| 2902 | return subpage_readlen(opaque, addr, 2); |
| 2903 | } |
| 2904 | |
| 2905 | static void subpage_writel (void *opaque, |
| 2906 | target_phys_addr_t addr, uint32_t value) |
| 2907 | { |
| 2908 | #if defined(DEBUG_SUBPAGE) |
| 2909 | printf("%s: addr " TARGET_FMT_plx " val %08x\n", __func__, addr, value); |
| 2910 | #endif |
| 2911 | subpage_writelen(opaque, addr, value, 2); |
| 2912 | } |
| 2913 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2914 | static CPUReadMemoryFunc * const subpage_read[] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2915 | &subpage_readb, |
| 2916 | &subpage_readw, |
| 2917 | &subpage_readl, |
| 2918 | }; |
| 2919 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 2920 | static CPUWriteMemoryFunc * const subpage_write[] = { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2921 | &subpage_writeb, |
| 2922 | &subpage_writew, |
| 2923 | &subpage_writel, |
| 2924 | }; |
| 2925 | |
| 2926 | 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] | 2927 | ram_addr_t memory, ram_addr_t region_offset) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2928 | { |
| 2929 | int idx, eidx; |
| 2930 | unsigned int i; |
| 2931 | |
| 2932 | if (start >= TARGET_PAGE_SIZE || end >= TARGET_PAGE_SIZE) |
| 2933 | return -1; |
| 2934 | idx = SUBPAGE_IDX(start); |
| 2935 | eidx = SUBPAGE_IDX(end); |
| 2936 | #if defined(DEBUG_SUBPAGE) |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2937 | 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] | 2938 | mmio, start, end, idx, eidx, memory); |
| 2939 | #endif |
| 2940 | memory >>= IO_MEM_SHIFT; |
| 2941 | for (; idx <= eidx; idx++) { |
| 2942 | for (i = 0; i < 4; i++) { |
| 2943 | if (io_mem_read[memory][i]) { |
| 2944 | mmio->mem_read[idx][i] = &io_mem_read[memory][i]; |
| 2945 | mmio->opaque[idx][0][i] = io_mem_opaque[memory]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2946 | mmio->region_offset[idx][0][i] = region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2947 | } |
| 2948 | if (io_mem_write[memory][i]) { |
| 2949 | mmio->mem_write[idx][i] = &io_mem_write[memory][i]; |
| 2950 | mmio->opaque[idx][1][i] = io_mem_opaque[memory]; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2951 | mmio->region_offset[idx][1][i] = region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2952 | } |
| 2953 | } |
| 2954 | } |
| 2955 | |
| 2956 | return 0; |
| 2957 | } |
| 2958 | |
| 2959 | 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] | 2960 | 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] | 2961 | { |
| 2962 | subpage_t *mmio; |
| 2963 | int subpage_memory; |
| 2964 | |
| 2965 | mmio = qemu_mallocz(sizeof(subpage_t)); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2966 | |
| 2967 | mmio->base = base; |
| 2968 | 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] | 2969 | #if defined(DEBUG_SUBPAGE) |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2970 | printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__, |
| 2971 | mmio, base, TARGET_PAGE_SIZE, subpage_memory); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2972 | #endif |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2973 | *phys = subpage_memory | IO_MEM_SUBPAGE; |
| 2974 | subpage_register(mmio, 0, TARGET_PAGE_SIZE - 1, orig_memory, |
| 2975 | region_offset); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2976 | |
| 2977 | return mmio; |
| 2978 | } |
| 2979 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2980 | static int get_free_io_mem_idx(void) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2981 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2982 | int i; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2983 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 2984 | for (i = 0; i<IO_MEM_NB_ENTRIES; i++) |
| 2985 | if (!io_mem_used[i]) { |
| 2986 | io_mem_used[i] = 1; |
| 2987 | return i; |
| 2988 | } |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 2989 | 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] | 2990 | return -1; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 2991 | } |
| 2992 | |
| 2993 | /* mem_read and mem_write are arrays of functions containing the |
| 2994 | 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] | 2995 | 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] | 2996 | If io_index is non zero, the corresponding io zone is |
| 2997 | modified. If it is zero, a new io zone is allocated. The return |
| 2998 | value can be used with cpu_register_physical_memory(). (-1) is |
| 2999 | returned if error. */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3000 | static int cpu_register_io_memory_fixed(int io_index, |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3001 | CPUReadMemoryFunc * const *mem_read, |
| 3002 | CPUWriteMemoryFunc * const *mem_write, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3003 | void *opaque) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3004 | { |
| 3005 | int i, subwidth = 0; |
| 3006 | |
| 3007 | if (io_index <= 0) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3008 | io_index = get_free_io_mem_idx(); |
| 3009 | if (io_index == -1) |
| 3010 | return io_index; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3011 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3012 | io_index >>= IO_MEM_SHIFT; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3013 | if (io_index >= IO_MEM_NB_ENTRIES) |
| 3014 | return -1; |
| 3015 | } |
| 3016 | |
| 3017 | for(i = 0;i < 3; i++) { |
| 3018 | if (!mem_read[i] || !mem_write[i]) |
| 3019 | subwidth = IO_MEM_SUBWIDTH; |
| 3020 | io_mem_read[io_index][i] = mem_read[i]; |
| 3021 | io_mem_write[io_index][i] = mem_write[i]; |
| 3022 | } |
| 3023 | io_mem_opaque[io_index] = opaque; |
| 3024 | return (io_index << IO_MEM_SHIFT) | subwidth; |
| 3025 | } |
| 3026 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3027 | int cpu_register_io_memory(CPUReadMemoryFunc * const *mem_read, |
| 3028 | CPUWriteMemoryFunc * const *mem_write, |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3029 | void *opaque) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3030 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3031 | 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] | 3032 | } |
| 3033 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3034 | void cpu_unregister_io_memory(int io_table_address) |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3035 | { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3036 | int i; |
| 3037 | int io_index = io_table_address >> IO_MEM_SHIFT; |
| 3038 | |
| 3039 | for (i=0;i < 3; i++) { |
| 3040 | io_mem_read[io_index][i] = unassigned_mem_read[i]; |
| 3041 | io_mem_write[io_index][i] = unassigned_mem_write[i]; |
| 3042 | } |
| 3043 | io_mem_opaque[io_index] = NULL; |
| 3044 | io_mem_used[io_index] = 0; |
| 3045 | } |
| 3046 | |
| 3047 | static void io_mem_init(void) |
| 3048 | { |
| 3049 | int i; |
| 3050 | |
| 3051 | cpu_register_io_memory_fixed(IO_MEM_ROM, error_mem_read, unassigned_mem_write, NULL); |
| 3052 | cpu_register_io_memory_fixed(IO_MEM_UNASSIGNED, unassigned_mem_read, unassigned_mem_write, NULL); |
| 3053 | cpu_register_io_memory_fixed(IO_MEM_NOTDIRTY, error_mem_read, notdirty_mem_write, NULL); |
| 3054 | for (i=0; i<5; i++) |
| 3055 | io_mem_used[i] = 1; |
| 3056 | |
| 3057 | io_mem_watch = cpu_register_io_memory(watch_mem_read, |
| 3058 | watch_mem_write, NULL); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3059 | } |
| 3060 | |
| 3061 | #endif /* !defined(CONFIG_USER_ONLY) */ |
| 3062 | |
| 3063 | /* physical memory access (slow version, mainly for debug) */ |
| 3064 | #if defined(CONFIG_USER_ONLY) |
| 3065 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
| 3066 | int len, int is_write) |
| 3067 | { |
| 3068 | int l, flags; |
| 3069 | target_ulong page; |
| 3070 | void * p; |
| 3071 | |
| 3072 | while (len > 0) { |
| 3073 | page = addr & TARGET_PAGE_MASK; |
| 3074 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3075 | if (l > len) |
| 3076 | l = len; |
| 3077 | flags = page_get_flags(page); |
| 3078 | if (!(flags & PAGE_VALID)) |
| 3079 | return; |
| 3080 | if (is_write) { |
| 3081 | if (!(flags & PAGE_WRITE)) |
| 3082 | return; |
| 3083 | /* XXX: this code should not depend on lock_user */ |
| 3084 | if (!(p = lock_user(VERIFY_WRITE, addr, l, 0))) |
| 3085 | /* FIXME - should this return an error rather than just fail? */ |
| 3086 | return; |
| 3087 | memcpy(p, buf, l); |
| 3088 | unlock_user(p, addr, l); |
| 3089 | } else { |
| 3090 | if (!(flags & PAGE_READ)) |
| 3091 | return; |
| 3092 | /* XXX: this code should not depend on lock_user */ |
| 3093 | if (!(p = lock_user(VERIFY_READ, addr, l, 1))) |
| 3094 | /* FIXME - should this return an error rather than just fail? */ |
| 3095 | return; |
| 3096 | memcpy(buf, p, l); |
| 3097 | unlock_user(p, addr, 0); |
| 3098 | } |
| 3099 | len -= l; |
| 3100 | buf += l; |
| 3101 | addr += l; |
| 3102 | } |
| 3103 | } |
| 3104 | |
| 3105 | #else |
| 3106 | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, |
| 3107 | int len, int is_write) |
| 3108 | { |
| 3109 | int l, io_index; |
| 3110 | uint8_t *ptr; |
| 3111 | uint32_t val; |
| 3112 | target_phys_addr_t page; |
| 3113 | unsigned long pd; |
| 3114 | PhysPageDesc *p; |
| 3115 | |
| 3116 | while (len > 0) { |
| 3117 | page = addr & TARGET_PAGE_MASK; |
| 3118 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3119 | if (l > len) |
| 3120 | l = len; |
| 3121 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
| 3122 | if (!p) { |
| 3123 | pd = IO_MEM_UNASSIGNED; |
| 3124 | } else { |
| 3125 | pd = p->phys_offset; |
| 3126 | } |
| 3127 | |
| 3128 | if (is_write) { |
| 3129 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3130 | target_phys_addr_t addr1 = addr; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3131 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3132 | if (p) |
| 3133 | addr1 = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3134 | /* XXX: could force cpu_single_env to NULL to avoid |
| 3135 | potential bugs */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3136 | if (l >= 4 && ((addr1 & 3) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3137 | /* 32 bit write access */ |
| 3138 | val = ldl_p(buf); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3139 | 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] | 3140 | l = 4; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3141 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3142 | /* 16 bit write access */ |
| 3143 | val = lduw_p(buf); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3144 | 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] | 3145 | l = 2; |
| 3146 | } else { |
| 3147 | /* 8 bit write access */ |
| 3148 | val = ldub_p(buf); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3149 | 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] | 3150 | l = 1; |
| 3151 | } |
| 3152 | } else { |
| 3153 | unsigned long addr1; |
| 3154 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3155 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3156 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3157 | memcpy(ptr, buf, l); |
| 3158 | if (!cpu_physical_memory_is_dirty(addr1)) { |
| 3159 | /* invalidate code */ |
| 3160 | tb_invalidate_phys_page_range(addr1, addr1 + l, 0); |
| 3161 | /* set dirty bit */ |
| 3162 | phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |= |
| 3163 | (0xff & ~CODE_DIRTY_FLAG); |
| 3164 | } |
| 3165 | } |
| 3166 | } else { |
| 3167 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && |
| 3168 | !(pd & IO_MEM_ROMD)) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3169 | target_phys_addr_t addr1 = addr; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3170 | /* I/O case */ |
| 3171 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3172 | if (p) |
| 3173 | addr1 = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
| 3174 | if (l >= 4 && ((addr1 & 3) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3175 | /* 32 bit read access */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3176 | 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] | 3177 | stl_p(buf, val); |
| 3178 | l = 4; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3179 | } else if (l >= 2 && ((addr1 & 1) == 0)) { |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3180 | /* 16 bit read access */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3181 | 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] | 3182 | stw_p(buf, val); |
| 3183 | l = 2; |
| 3184 | } else { |
| 3185 | /* 8 bit read access */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3186 | 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] | 3187 | stb_p(buf, val); |
| 3188 | l = 1; |
| 3189 | } |
| 3190 | } else { |
| 3191 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3192 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3193 | (addr & ~TARGET_PAGE_MASK); |
| 3194 | memcpy(buf, ptr, l); |
| 3195 | } |
| 3196 | } |
| 3197 | len -= l; |
| 3198 | buf += l; |
| 3199 | addr += l; |
| 3200 | } |
| 3201 | } |
| 3202 | |
| 3203 | /* used for ROM loading : can write in RAM and ROM */ |
| 3204 | void cpu_physical_memory_write_rom(target_phys_addr_t addr, |
| 3205 | const uint8_t *buf, int len) |
| 3206 | { |
| 3207 | int l; |
| 3208 | uint8_t *ptr; |
| 3209 | target_phys_addr_t page; |
| 3210 | unsigned long pd; |
| 3211 | PhysPageDesc *p; |
| 3212 | |
| 3213 | while (len > 0) { |
| 3214 | page = addr & TARGET_PAGE_MASK; |
| 3215 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3216 | if (l > len) |
| 3217 | l = len; |
| 3218 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
| 3219 | if (!p) { |
| 3220 | pd = IO_MEM_UNASSIGNED; |
| 3221 | } else { |
| 3222 | pd = p->phys_offset; |
| 3223 | } |
| 3224 | |
| 3225 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM && |
| 3226 | (pd & ~TARGET_PAGE_MASK) != IO_MEM_ROM && |
| 3227 | !(pd & IO_MEM_ROMD)) { |
| 3228 | /* do nothing */ |
| 3229 | } else { |
| 3230 | unsigned long addr1; |
| 3231 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3232 | /* ROM/RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3233 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3234 | memcpy(ptr, buf, l); |
| 3235 | } |
| 3236 | len -= l; |
| 3237 | buf += l; |
| 3238 | addr += l; |
| 3239 | } |
| 3240 | } |
| 3241 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3242 | typedef struct { |
| 3243 | void *buffer; |
| 3244 | target_phys_addr_t addr; |
| 3245 | target_phys_addr_t len; |
| 3246 | } BounceBuffer; |
| 3247 | |
| 3248 | static BounceBuffer bounce; |
| 3249 | |
| 3250 | typedef struct MapClient { |
| 3251 | void *opaque; |
| 3252 | void (*callback)(void *opaque); |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3253 | QLIST_ENTRY(MapClient) link; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3254 | } MapClient; |
| 3255 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3256 | static QLIST_HEAD(map_client_list, MapClient) map_client_list |
| 3257 | = QLIST_HEAD_INITIALIZER(map_client_list); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3258 | |
| 3259 | void *cpu_register_map_client(void *opaque, void (*callback)(void *opaque)) |
| 3260 | { |
| 3261 | MapClient *client = qemu_malloc(sizeof(*client)); |
| 3262 | |
| 3263 | client->opaque = opaque; |
| 3264 | client->callback = callback; |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3265 | QLIST_INSERT_HEAD(&map_client_list, client, link); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3266 | return client; |
| 3267 | } |
| 3268 | |
| 3269 | void cpu_unregister_map_client(void *_client) |
| 3270 | { |
| 3271 | MapClient *client = (MapClient *)_client; |
| 3272 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3273 | QLIST_REMOVE(client, link); |
| 3274 | qemu_free(client); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3275 | } |
| 3276 | |
| 3277 | static void cpu_notify_map_clients(void) |
| 3278 | { |
| 3279 | MapClient *client; |
| 3280 | |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3281 | while (!QLIST_EMPTY(&map_client_list)) { |
| 3282 | client = QLIST_FIRST(&map_client_list); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3283 | client->callback(client->opaque); |
David 'Digit' Turner | a5d4120 | 2010-05-10 18:37:10 -0700 | [diff] [blame] | 3284 | QLIST_REMOVE(client, link); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3285 | } |
| 3286 | } |
| 3287 | |
| 3288 | /* Map a physical memory region into a host virtual address. |
| 3289 | * May map a subset of the requested range, given by and returned in *plen. |
| 3290 | * May return NULL if resources needed to perform the mapping are exhausted. |
| 3291 | * Use only for reads OR writes - not for read-modify-write operations. |
| 3292 | * Use cpu_register_map_client() to know when retrying the map operation is |
| 3293 | * likely to succeed. |
| 3294 | */ |
| 3295 | void *cpu_physical_memory_map(target_phys_addr_t addr, |
| 3296 | target_phys_addr_t *plen, |
| 3297 | int is_write) |
| 3298 | { |
| 3299 | target_phys_addr_t len = *plen; |
| 3300 | target_phys_addr_t done = 0; |
| 3301 | int l; |
| 3302 | uint8_t *ret = NULL; |
| 3303 | uint8_t *ptr; |
| 3304 | target_phys_addr_t page; |
| 3305 | unsigned long pd; |
| 3306 | PhysPageDesc *p; |
| 3307 | unsigned long addr1; |
| 3308 | |
| 3309 | while (len > 0) { |
| 3310 | page = addr & TARGET_PAGE_MASK; |
| 3311 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3312 | if (l > len) |
| 3313 | l = len; |
| 3314 | p = phys_page_find(page >> TARGET_PAGE_BITS); |
| 3315 | if (!p) { |
| 3316 | pd = IO_MEM_UNASSIGNED; |
| 3317 | } else { |
| 3318 | pd = p->phys_offset; |
| 3319 | } |
| 3320 | |
| 3321 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3322 | if (done || bounce.buffer) { |
| 3323 | break; |
| 3324 | } |
| 3325 | bounce.buffer = qemu_memalign(TARGET_PAGE_SIZE, TARGET_PAGE_SIZE); |
| 3326 | bounce.addr = addr; |
| 3327 | bounce.len = l; |
| 3328 | if (!is_write) { |
| 3329 | cpu_physical_memory_rw(addr, bounce.buffer, l, 0); |
| 3330 | } |
| 3331 | ptr = bounce.buffer; |
| 3332 | } else { |
| 3333 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3334 | ptr = qemu_get_ram_ptr(addr1); |
| 3335 | } |
| 3336 | if (!done) { |
| 3337 | ret = ptr; |
| 3338 | } else if (ret + done != ptr) { |
| 3339 | break; |
| 3340 | } |
| 3341 | |
| 3342 | len -= l; |
| 3343 | addr += l; |
| 3344 | done += l; |
| 3345 | } |
| 3346 | *plen = done; |
| 3347 | return ret; |
| 3348 | } |
| 3349 | |
| 3350 | /* Unmaps a memory region previously mapped by cpu_physical_memory_map(). |
| 3351 | * Will also mark the memory as dirty if is_write == 1. access_len gives |
| 3352 | * the amount of memory that was actually read or written by the caller. |
| 3353 | */ |
| 3354 | void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, |
| 3355 | int is_write, target_phys_addr_t access_len) |
| 3356 | { |
| 3357 | if (buffer != bounce.buffer) { |
| 3358 | if (is_write) { |
| 3359 | ram_addr_t addr1 = qemu_ram_addr_from_host(buffer); |
| 3360 | while (access_len) { |
| 3361 | unsigned l; |
| 3362 | l = TARGET_PAGE_SIZE; |
| 3363 | if (l > access_len) |
| 3364 | l = access_len; |
| 3365 | if (!cpu_physical_memory_is_dirty(addr1)) { |
| 3366 | /* invalidate code */ |
| 3367 | tb_invalidate_phys_page_range(addr1, addr1 + l, 0); |
| 3368 | /* set dirty bit */ |
| 3369 | phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |= |
| 3370 | (0xff & ~CODE_DIRTY_FLAG); |
| 3371 | } |
| 3372 | addr1 += l; |
| 3373 | access_len -= l; |
| 3374 | } |
| 3375 | } |
| 3376 | return; |
| 3377 | } |
| 3378 | if (is_write) { |
| 3379 | cpu_physical_memory_write(bounce.addr, bounce.buffer, access_len); |
| 3380 | } |
| 3381 | qemu_free(bounce.buffer); |
| 3382 | bounce.buffer = NULL; |
| 3383 | cpu_notify_map_clients(); |
| 3384 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3385 | |
| 3386 | /* warning: addr must be aligned */ |
| 3387 | uint32_t ldl_phys(target_phys_addr_t addr) |
| 3388 | { |
| 3389 | int io_index; |
| 3390 | uint8_t *ptr; |
| 3391 | uint32_t val; |
| 3392 | unsigned long pd; |
| 3393 | PhysPageDesc *p; |
| 3394 | |
| 3395 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3396 | if (!p) { |
| 3397 | pd = IO_MEM_UNASSIGNED; |
| 3398 | } else { |
| 3399 | pd = p->phys_offset; |
| 3400 | } |
| 3401 | |
| 3402 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && |
| 3403 | !(pd & IO_MEM_ROMD)) { |
| 3404 | /* I/O case */ |
| 3405 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3406 | if (p) |
| 3407 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3408 | val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr); |
| 3409 | } else { |
| 3410 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3411 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3412 | (addr & ~TARGET_PAGE_MASK); |
| 3413 | val = ldl_p(ptr); |
| 3414 | } |
| 3415 | return val; |
| 3416 | } |
| 3417 | |
| 3418 | /* warning: addr must be aligned */ |
| 3419 | uint64_t ldq_phys(target_phys_addr_t addr) |
| 3420 | { |
| 3421 | int io_index; |
| 3422 | uint8_t *ptr; |
| 3423 | uint64_t val; |
| 3424 | unsigned long pd; |
| 3425 | PhysPageDesc *p; |
| 3426 | |
| 3427 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3428 | if (!p) { |
| 3429 | pd = IO_MEM_UNASSIGNED; |
| 3430 | } else { |
| 3431 | pd = p->phys_offset; |
| 3432 | } |
| 3433 | |
| 3434 | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM && |
| 3435 | !(pd & IO_MEM_ROMD)) { |
| 3436 | /* I/O case */ |
| 3437 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3438 | if (p) |
| 3439 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3440 | #ifdef TARGET_WORDS_BIGENDIAN |
| 3441 | val = (uint64_t)io_mem_read[io_index][2](io_mem_opaque[io_index], addr) << 32; |
| 3442 | val |= io_mem_read[io_index][2](io_mem_opaque[io_index], addr + 4); |
| 3443 | #else |
| 3444 | val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr); |
| 3445 | val |= (uint64_t)io_mem_read[io_index][2](io_mem_opaque[io_index], addr + 4) << 32; |
| 3446 | #endif |
| 3447 | } else { |
| 3448 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3449 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3450 | (addr & ~TARGET_PAGE_MASK); |
| 3451 | val = ldq_p(ptr); |
| 3452 | } |
| 3453 | return val; |
| 3454 | } |
| 3455 | |
| 3456 | /* XXX: optimize */ |
| 3457 | uint32_t ldub_phys(target_phys_addr_t addr) |
| 3458 | { |
| 3459 | uint8_t val; |
| 3460 | cpu_physical_memory_read(addr, &val, 1); |
| 3461 | return val; |
| 3462 | } |
| 3463 | |
| 3464 | /* XXX: optimize */ |
| 3465 | uint32_t lduw_phys(target_phys_addr_t addr) |
| 3466 | { |
| 3467 | uint16_t val; |
| 3468 | cpu_physical_memory_read(addr, (uint8_t *)&val, 2); |
| 3469 | return tswap16(val); |
| 3470 | } |
| 3471 | |
| 3472 | /* warning: addr must be aligned. The ram page is not masked as dirty |
| 3473 | and the code inside is not invalidated. It is useful if the dirty |
| 3474 | bits are used to track modified PTEs */ |
| 3475 | void stl_phys_notdirty(target_phys_addr_t addr, uint32_t val) |
| 3476 | { |
| 3477 | int io_index; |
| 3478 | uint8_t *ptr; |
| 3479 | unsigned long pd; |
| 3480 | PhysPageDesc *p; |
| 3481 | |
| 3482 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3483 | if (!p) { |
| 3484 | pd = IO_MEM_UNASSIGNED; |
| 3485 | } else { |
| 3486 | pd = p->phys_offset; |
| 3487 | } |
| 3488 | |
| 3489 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3490 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3491 | if (p) |
| 3492 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3493 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val); |
| 3494 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3495 | unsigned long addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3496 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3497 | stl_p(ptr, val); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3498 | |
| 3499 | if (unlikely(in_migration)) { |
| 3500 | if (!cpu_physical_memory_is_dirty(addr1)) { |
| 3501 | /* invalidate code */ |
| 3502 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); |
| 3503 | /* set dirty bit */ |
| 3504 | phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |= |
| 3505 | (0xff & ~CODE_DIRTY_FLAG); |
| 3506 | } |
| 3507 | } |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3508 | } |
| 3509 | } |
| 3510 | |
| 3511 | void stq_phys_notdirty(target_phys_addr_t addr, uint64_t val) |
| 3512 | { |
| 3513 | int io_index; |
| 3514 | uint8_t *ptr; |
| 3515 | unsigned long pd; |
| 3516 | PhysPageDesc *p; |
| 3517 | |
| 3518 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3519 | if (!p) { |
| 3520 | pd = IO_MEM_UNASSIGNED; |
| 3521 | } else { |
| 3522 | pd = p->phys_offset; |
| 3523 | } |
| 3524 | |
| 3525 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3526 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3527 | if (p) |
| 3528 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3529 | #ifdef TARGET_WORDS_BIGENDIAN |
| 3530 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val >> 32); |
| 3531 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr + 4, val); |
| 3532 | #else |
| 3533 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val); |
| 3534 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr + 4, val >> 32); |
| 3535 | #endif |
| 3536 | } else { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3537 | ptr = qemu_get_ram_ptr(pd & TARGET_PAGE_MASK) + |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3538 | (addr & ~TARGET_PAGE_MASK); |
| 3539 | stq_p(ptr, val); |
| 3540 | } |
| 3541 | } |
| 3542 | |
| 3543 | /* warning: addr must be aligned */ |
| 3544 | void stl_phys(target_phys_addr_t addr, uint32_t val) |
| 3545 | { |
| 3546 | int io_index; |
| 3547 | uint8_t *ptr; |
| 3548 | unsigned long pd; |
| 3549 | PhysPageDesc *p; |
| 3550 | |
| 3551 | p = phys_page_find(addr >> TARGET_PAGE_BITS); |
| 3552 | if (!p) { |
| 3553 | pd = IO_MEM_UNASSIGNED; |
| 3554 | } else { |
| 3555 | pd = p->phys_offset; |
| 3556 | } |
| 3557 | |
| 3558 | if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM) { |
| 3559 | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3560 | if (p) |
| 3561 | addr = (addr & ~TARGET_PAGE_MASK) + p->region_offset; |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3562 | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val); |
| 3563 | } else { |
| 3564 | unsigned long addr1; |
| 3565 | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
| 3566 | /* RAM case */ |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3567 | ptr = qemu_get_ram_ptr(addr1); |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3568 | stl_p(ptr, val); |
| 3569 | if (!cpu_physical_memory_is_dirty(addr1)) { |
| 3570 | /* invalidate code */ |
| 3571 | tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); |
| 3572 | /* set dirty bit */ |
| 3573 | phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |= |
| 3574 | (0xff & ~CODE_DIRTY_FLAG); |
| 3575 | } |
| 3576 | } |
| 3577 | } |
| 3578 | |
| 3579 | /* XXX: optimize */ |
| 3580 | void stb_phys(target_phys_addr_t addr, uint32_t val) |
| 3581 | { |
| 3582 | uint8_t v = val; |
| 3583 | cpu_physical_memory_write(addr, &v, 1); |
| 3584 | } |
| 3585 | |
| 3586 | /* XXX: optimize */ |
| 3587 | void stw_phys(target_phys_addr_t addr, uint32_t val) |
| 3588 | { |
| 3589 | uint16_t v = tswap16(val); |
| 3590 | cpu_physical_memory_write(addr, (const uint8_t *)&v, 2); |
| 3591 | } |
| 3592 | |
| 3593 | /* XXX: optimize */ |
| 3594 | void stq_phys(target_phys_addr_t addr, uint64_t val) |
| 3595 | { |
| 3596 | val = tswap64(val); |
| 3597 | cpu_physical_memory_write(addr, (const uint8_t *)&val, 8); |
| 3598 | } |
| 3599 | |
| 3600 | #endif |
| 3601 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3602 | /* virtual memory access for debug (includes writing to ROM) */ |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3603 | int cpu_memory_rw_debug(CPUState *env, target_ulong addr, |
| 3604 | uint8_t *buf, int len, int is_write) |
| 3605 | { |
| 3606 | int l; |
| 3607 | target_phys_addr_t phys_addr; |
| 3608 | target_ulong page; |
| 3609 | |
| 3610 | while (len > 0) { |
| 3611 | page = addr & TARGET_PAGE_MASK; |
| 3612 | phys_addr = cpu_get_phys_page_debug(env, page); |
| 3613 | /* if no physical page mapped, return an error */ |
| 3614 | if (phys_addr == -1) |
| 3615 | return -1; |
| 3616 | l = (page + TARGET_PAGE_SIZE) - addr; |
| 3617 | if (l > len) |
| 3618 | l = len; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 3619 | phys_addr += (addr & ~TARGET_PAGE_MASK); |
| 3620 | #if !defined(CONFIG_USER_ONLY) |
| 3621 | if (is_write) |
| 3622 | cpu_physical_memory_write_rom(phys_addr, buf, l); |
| 3623 | else |
| 3624 | #endif |
| 3625 | 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] | 3626 | len -= l; |
| 3627 | buf += l; |
| 3628 | addr += l; |
| 3629 | } |
| 3630 | return 0; |
| 3631 | } |
| 3632 | |
| 3633 | /* in deterministic execution mode, instructions doing device I/Os |
| 3634 | must be at the end of the TB */ |
| 3635 | void cpu_io_recompile(CPUState *env, void *retaddr) |
| 3636 | { |
| 3637 | TranslationBlock *tb; |
| 3638 | uint32_t n, cflags; |
| 3639 | target_ulong pc, cs_base; |
| 3640 | uint64_t flags; |
| 3641 | |
| 3642 | tb = tb_find_pc((unsigned long)retaddr); |
| 3643 | if (!tb) { |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3644 | 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] | 3645 | retaddr); |
| 3646 | } |
| 3647 | n = env->icount_decr.u16.low + tb->icount; |
| 3648 | cpu_restore_state(tb, env, (unsigned long)retaddr, NULL); |
| 3649 | /* Calculate how many instructions had been executed before the fault |
| 3650 | occurred. */ |
| 3651 | n = n - env->icount_decr.u16.low; |
| 3652 | /* Generate a new TB ending on the I/O insn. */ |
| 3653 | n++; |
| 3654 | /* On MIPS and SH, delay slot instructions can only be restarted if |
| 3655 | they were already the first instruction in the TB. If this is not |
| 3656 | the first instruction in a TB then re-execute the preceding |
| 3657 | branch. */ |
| 3658 | #if defined(TARGET_MIPS) |
| 3659 | if ((env->hflags & MIPS_HFLAG_BMASK) != 0 && n > 1) { |
| 3660 | env->active_tc.PC -= 4; |
| 3661 | env->icount_decr.u16.low++; |
| 3662 | env->hflags &= ~MIPS_HFLAG_BMASK; |
| 3663 | } |
| 3664 | #elif defined(TARGET_SH4) |
| 3665 | if ((env->flags & ((DELAY_SLOT | DELAY_SLOT_CONDITIONAL))) != 0 |
| 3666 | && n > 1) { |
| 3667 | env->pc -= 2; |
| 3668 | env->icount_decr.u16.low++; |
| 3669 | env->flags &= ~(DELAY_SLOT | DELAY_SLOT_CONDITIONAL); |
| 3670 | } |
| 3671 | #endif |
| 3672 | /* This should never happen. */ |
| 3673 | if (n > CF_COUNT_MASK) |
| 3674 | cpu_abort(env, "TB too big during recompile"); |
| 3675 | |
| 3676 | cflags = n | CF_LAST_IO; |
| 3677 | pc = tb->pc; |
| 3678 | cs_base = tb->cs_base; |
| 3679 | flags = tb->flags; |
| 3680 | tb_phys_invalidate(tb, -1); |
| 3681 | /* FIXME: In theory this could raise an exception. In practice |
| 3682 | we have already translated the block once so it's probably ok. */ |
| 3683 | tb_gen_code(env, pc, cs_base, flags, cflags); |
| 3684 | /* TODO: If env->pc != tb->pc (i.e. the faulting instruction was not |
| 3685 | the first in the TB) then we end up generating a whole new TB and |
| 3686 | repeating the fault, which is horribly inefficient. |
| 3687 | Better would be to execute just this insn uncached, or generate a |
| 3688 | second new TB. */ |
| 3689 | cpu_resume_from_signal(env, NULL); |
| 3690 | } |
| 3691 | |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3692 | #if !defined(CONFIG_USER_ONLY) |
| 3693 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3694 | void dump_exec_info(FILE *f, |
| 3695 | int (*cpu_fprintf)(FILE *f, const char *fmt, ...)) |
| 3696 | { |
| 3697 | int i, target_code_size, max_target_code_size; |
| 3698 | int direct_jmp_count, direct_jmp2_count, cross_page; |
| 3699 | TranslationBlock *tb; |
| 3700 | |
| 3701 | target_code_size = 0; |
| 3702 | max_target_code_size = 0; |
| 3703 | cross_page = 0; |
| 3704 | direct_jmp_count = 0; |
| 3705 | direct_jmp2_count = 0; |
| 3706 | for(i = 0; i < nb_tbs; i++) { |
| 3707 | tb = &tbs[i]; |
| 3708 | target_code_size += tb->size; |
| 3709 | if (tb->size > max_target_code_size) |
| 3710 | max_target_code_size = tb->size; |
| 3711 | if (tb->page_addr[1] != -1) |
| 3712 | cross_page++; |
| 3713 | if (tb->tb_next_offset[0] != 0xffff) { |
| 3714 | direct_jmp_count++; |
| 3715 | if (tb->tb_next_offset[1] != 0xffff) { |
| 3716 | direct_jmp2_count++; |
| 3717 | } |
| 3718 | } |
| 3719 | } |
| 3720 | /* XXX: avoid using doubles ? */ |
| 3721 | cpu_fprintf(f, "Translation buffer state:\n"); |
| 3722 | cpu_fprintf(f, "gen code size %ld/%ld\n", |
| 3723 | code_gen_ptr - code_gen_buffer, code_gen_buffer_max_size); |
David 'Digit' Turner | 3641106 | 2010-12-22 17:34:53 +0100 | [diff] [blame] | 3724 | cpu_fprintf(f, "TB count %d/%d\n", |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3725 | nb_tbs, code_gen_max_blocks); |
| 3726 | cpu_fprintf(f, "TB avg target size %d max=%d bytes\n", |
| 3727 | nb_tbs ? target_code_size / nb_tbs : 0, |
| 3728 | max_target_code_size); |
| 3729 | cpu_fprintf(f, "TB avg host size %d bytes (expansion ratio: %0.1f)\n", |
| 3730 | nb_tbs ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0, |
| 3731 | target_code_size ? (double) (code_gen_ptr - code_gen_buffer) / target_code_size : 0); |
| 3732 | cpu_fprintf(f, "cross page TB count %d (%d%%)\n", |
| 3733 | cross_page, |
| 3734 | nb_tbs ? (cross_page * 100) / nb_tbs : 0); |
| 3735 | cpu_fprintf(f, "direct jump count %d (%d%%) (2 jumps=%d %d%%)\n", |
| 3736 | direct_jmp_count, |
| 3737 | nb_tbs ? (direct_jmp_count * 100) / nb_tbs : 0, |
| 3738 | direct_jmp2_count, |
| 3739 | nb_tbs ? (direct_jmp2_count * 100) / nb_tbs : 0); |
| 3740 | cpu_fprintf(f, "\nStatistics:\n"); |
| 3741 | cpu_fprintf(f, "TB flush count %d\n", tb_flush_count); |
| 3742 | cpu_fprintf(f, "TB invalidate count %d\n", tb_phys_invalidate_count); |
| 3743 | cpu_fprintf(f, "TLB flush count %d\n", tlb_flush_count); |
| 3744 | tcg_dump_info(f, cpu_fprintf); |
| 3745 | } |
| 3746 | |
The Android Open Source Project | 8b23a6c | 2009-03-03 19:30:32 -0800 | [diff] [blame] | 3747 | #define MMUSUFFIX _cmmu |
| 3748 | #define GETPC() NULL |
| 3749 | #define env cpu_single_env |
| 3750 | #define SOFTMMU_CODE_ACCESS |
| 3751 | |
| 3752 | #define SHIFT 0 |
| 3753 | #include "softmmu_template.h" |
| 3754 | |
| 3755 | #define SHIFT 1 |
| 3756 | #include "softmmu_template.h" |
| 3757 | |
| 3758 | #define SHIFT 2 |
| 3759 | #include "softmmu_template.h" |
| 3760 | |
| 3761 | #define SHIFT 3 |
| 3762 | #include "softmmu_template.h" |
| 3763 | |
| 3764 | #undef env |
| 3765 | |
| 3766 | #endif |