blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 1 | #ifndef QEMU_H |
| 2 | #define QEMU_H |
| 3 | |
| 4 | #include <signal.h> |
| 5 | #include <string.h> |
| 6 | |
| 7 | #include "cpu.h" |
| 8 | |
| 9 | #undef DEBUG_REMAP |
| 10 | #ifdef DEBUG_REMAP |
| 11 | #include <stdlib.h> |
| 12 | #endif /* DEBUG_REMAP */ |
| 13 | |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 14 | #include "exec/user/abitypes.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 15 | |
| 16 | enum BSDType { |
| 17 | target_freebsd, |
| 18 | target_netbsd, |
| 19 | target_openbsd, |
| 20 | }; |
Juergen Lock | 78cfb07 | 2009-10-17 00:34:26 +0200 | [diff] [blame] | 21 | extern enum BSDType bsd_type; |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 22 | |
| 23 | #include "syscall_defs.h" |
| 24 | #include "syscall.h" |
| 25 | #include "target_signal.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 26 | #include "exec/gdbstub.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 27 | |
Juan Quintela | 2f7bb87 | 2009-07-27 16:13:24 +0200 | [diff] [blame] | 28 | #if defined(CONFIG_USE_NPTL) |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 29 | #define THREAD __thread |
| 30 | #else |
| 31 | #define THREAD |
| 32 | #endif |
| 33 | |
| 34 | /* This struct is used to hold certain information about the image. |
| 35 | * Basically, it replicates in user space what would be certain |
| 36 | * task_struct fields in the kernel |
| 37 | */ |
| 38 | struct image_info { |
| 39 | abi_ulong load_addr; |
| 40 | abi_ulong start_code; |
| 41 | abi_ulong end_code; |
| 42 | abi_ulong start_data; |
| 43 | abi_ulong end_data; |
| 44 | abi_ulong start_brk; |
| 45 | abi_ulong brk; |
| 46 | abi_ulong start_mmap; |
| 47 | abi_ulong mmap; |
| 48 | abi_ulong rss; |
| 49 | abi_ulong start_stack; |
| 50 | abi_ulong entry; |
| 51 | abi_ulong code_offset; |
| 52 | abi_ulong data_offset; |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 53 | int personality; |
| 54 | }; |
| 55 | |
| 56 | #define MAX_SIGQUEUE_SIZE 1024 |
| 57 | |
| 58 | struct sigqueue { |
| 59 | struct sigqueue *next; |
| 60 | //target_siginfo_t info; |
| 61 | }; |
| 62 | |
| 63 | struct emulated_sigtable { |
| 64 | int pending; /* true if signal is pending */ |
| 65 | struct sigqueue *first; |
| 66 | struct sigqueue info; /* in order to always have memory for the |
| 67 | first signal, we put it here */ |
| 68 | }; |
| 69 | |
| 70 | /* NOTE: we force a big alignment so that the stack stored after is |
| 71 | aligned too */ |
| 72 | typedef struct TaskState { |
| 73 | struct TaskState *next; |
| 74 | int used; /* non zero if used */ |
| 75 | struct image_info *info; |
| 76 | |
| 77 | struct emulated_sigtable sigtab[TARGET_NSIG]; |
| 78 | struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ |
| 79 | struct sigqueue *first_free; /* first free siginfo queue entry */ |
| 80 | int signal_pending; /* non zero if a signal may be pending */ |
| 81 | |
| 82 | uint8_t stack[0]; |
| 83 | } __attribute__((aligned(16))) TaskState; |
| 84 | |
| 85 | void init_task_state(TaskState *ts); |
| 86 | extern const char *qemu_uname_release; |
Blue Swirl | 2fa5d9b | 2009-09-27 19:30:51 +0000 | [diff] [blame] | 87 | #if defined(CONFIG_USE_GUEST_BASE) |
| 88 | extern unsigned long mmap_min_addr; |
| 89 | #endif |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 90 | |
| 91 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
| 92 | /* |
| 93 | * MAX_ARG_PAGES defines the number of pages allocated for arguments |
| 94 | * and envelope for the new program. 32 should suffice, this gives |
| 95 | * a maximum env+arg of 128kB w/4KB pages! |
| 96 | */ |
| 97 | #define MAX_ARG_PAGES 32 |
| 98 | |
| 99 | /* |
| 100 | * This structure is used to hold the arguments that are |
| 101 | * used when loading binaries. |
| 102 | */ |
| 103 | struct linux_binprm { |
| 104 | char buf[128]; |
| 105 | void *page[MAX_ARG_PAGES]; |
| 106 | abi_ulong p; |
| 107 | int fd; |
| 108 | int e_uid, e_gid; |
| 109 | int argc, envc; |
| 110 | char **argv; |
| 111 | char **envp; |
| 112 | char * filename; /* Name of binary */ |
| 113 | }; |
| 114 | |
| 115 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |
| 116 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
| 117 | abi_ulong stringp, int push_ptr); |
| 118 | int loader_exec(const char * filename, char ** argv, char ** envp, |
| 119 | struct target_pt_regs * regs, struct image_info *infop); |
| 120 | |
| 121 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
| 122 | struct image_info * info); |
| 123 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
| 124 | struct image_info * info); |
| 125 | |
| 126 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
| 127 | unsigned long len); |
| 128 | void target_set_brk(abi_ulong new_brk); |
| 129 | abi_long do_brk(abi_ulong new_brk); |
| 130 | void syscall_init(void); |
| 131 | abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1, |
| 132 | abi_long arg2, abi_long arg3, abi_long arg4, |
Juergen Lock | 78cfb07 | 2009-10-17 00:34:26 +0200 | [diff] [blame] | 133 | abi_long arg5, abi_long arg6, abi_long arg7, |
| 134 | abi_long arg8); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 135 | abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1, |
| 136 | abi_long arg2, abi_long arg3, abi_long arg4, |
| 137 | abi_long arg5, abi_long arg6); |
| 138 | abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1, |
| 139 | abi_long arg2, abi_long arg3, abi_long arg4, |
| 140 | abi_long arg5, abi_long arg6); |
Stefan Weil | e5924d8 | 2010-09-23 21:28:03 +0200 | [diff] [blame] | 141 | void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2); |
Andreas Färber | dca1173 | 2013-06-09 19:51:23 +0200 | [diff] [blame] | 142 | extern THREAD CPUState *thread_cpu; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 143 | void cpu_loop(CPUArchState *env); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 144 | char *target_strerror(int err); |
| 145 | int get_osversion(void); |
| 146 | void fork_start(void); |
| 147 | void fork_end(int child); |
| 148 | |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 149 | #include "qemu/log.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 150 | |
| 151 | /* strace.c */ |
| 152 | void |
| 153 | print_freebsd_syscall(int num, |
| 154 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 155 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 156 | void print_freebsd_syscall_ret(int num, abi_long ret); |
| 157 | void |
| 158 | print_netbsd_syscall(int num, |
| 159 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 160 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 161 | void print_netbsd_syscall_ret(int num, abi_long ret); |
| 162 | void |
| 163 | print_openbsd_syscall(int num, |
| 164 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 165 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 166 | void print_openbsd_syscall_ret(int num, abi_long ret); |
| 167 | extern int do_strace; |
| 168 | |
| 169 | /* signal.c */ |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 170 | void process_pending_signals(CPUArchState *cpu_env); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 171 | void signal_init(void); |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 172 | //int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 173 | //void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); |
| 174 | //void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo); |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 175 | long do_sigreturn(CPUArchState *env); |
| 176 | long do_rt_sigreturn(CPUArchState *env); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 177 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
| 178 | |
| 179 | /* mmap.c */ |
| 180 | int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
| 181 | abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, |
| 182 | int flags, int fd, abi_ulong offset); |
| 183 | int target_munmap(abi_ulong start, abi_ulong len); |
| 184 | abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, |
| 185 | abi_ulong new_size, unsigned long flags, |
| 186 | abi_ulong new_addr); |
| 187 | int target_msync(abi_ulong start, abi_ulong len, int flags); |
| 188 | extern unsigned long last_brk; |
| 189 | void mmap_lock(void); |
| 190 | void mmap_unlock(void); |
blueswir1 | 9399f09 | 2009-03-07 18:59:05 +0000 | [diff] [blame] | 191 | void cpu_list_lock(void); |
| 192 | void cpu_list_unlock(void); |
Juan Quintela | 2f7bb87 | 2009-07-27 16:13:24 +0200 | [diff] [blame] | 193 | #if defined(CONFIG_USE_NPTL) |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 194 | void mmap_fork_start(void); |
| 195 | void mmap_fork_end(int child); |
| 196 | #endif |
| 197 | |
Blue Swirl | 28e738d | 2009-08-01 10:29:42 +0000 | [diff] [blame] | 198 | /* main.c */ |
| 199 | extern unsigned long x86_stack_size; |
| 200 | |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 201 | /* user access */ |
| 202 | |
| 203 | #define VERIFY_READ 0 |
| 204 | #define VERIFY_WRITE 1 /* implies read access */ |
| 205 | |
| 206 | static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
| 207 | { |
| 208 | return page_check_range((target_ulong)addr, size, |
| 209 | (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0; |
| 210 | } |
| 211 | |
| 212 | /* NOTE __get_user and __put_user use host pointers and don't check access. */ |
| 213 | /* These are usually used to access struct data members once the |
| 214 | * struct has been locked - usually with lock_user_struct(). |
| 215 | */ |
| 216 | #define __put_user(x, hptr)\ |
| 217 | ({\ |
| 218 | int size = sizeof(*hptr);\ |
| 219 | switch(size) {\ |
| 220 | case 1:\ |
| 221 | *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ |
| 222 | break;\ |
| 223 | case 2:\ |
| 224 | *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\ |
| 225 | break;\ |
| 226 | case 4:\ |
| 227 | *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\ |
| 228 | break;\ |
| 229 | case 8:\ |
| 230 | *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
| 231 | break;\ |
| 232 | default:\ |
| 233 | abort();\ |
| 234 | }\ |
| 235 | 0;\ |
| 236 | }) |
| 237 | |
| 238 | #define __get_user(x, hptr) \ |
| 239 | ({\ |
| 240 | int size = sizeof(*hptr);\ |
| 241 | switch(size) {\ |
| 242 | case 1:\ |
| 243 | x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
| 244 | break;\ |
| 245 | case 2:\ |
| 246 | x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
| 247 | break;\ |
| 248 | case 4:\ |
| 249 | x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
| 250 | break;\ |
| 251 | case 8:\ |
| 252 | x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
| 253 | break;\ |
| 254 | default:\ |
| 255 | /* avoid warning */\ |
| 256 | x = 0;\ |
| 257 | abort();\ |
| 258 | }\ |
| 259 | 0;\ |
| 260 | }) |
| 261 | |
| 262 | /* put_user()/get_user() take a guest address and check access */ |
| 263 | /* These are usually used to access an atomic data type, such as an int, |
| 264 | * that has been passed by address. These internally perform locking |
| 265 | * and unlocking on the data type. |
| 266 | */ |
| 267 | #define put_user(x, gaddr, target_type) \ |
| 268 | ({ \ |
| 269 | abi_ulong __gaddr = (gaddr); \ |
| 270 | target_type *__hptr; \ |
| 271 | abi_long __ret; \ |
| 272 | if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ |
| 273 | __ret = __put_user((x), __hptr); \ |
| 274 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \ |
| 275 | } else \ |
| 276 | __ret = -TARGET_EFAULT; \ |
| 277 | __ret; \ |
| 278 | }) |
| 279 | |
| 280 | #define get_user(x, gaddr, target_type) \ |
| 281 | ({ \ |
| 282 | abi_ulong __gaddr = (gaddr); \ |
| 283 | target_type *__hptr; \ |
| 284 | abi_long __ret; \ |
| 285 | if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ |
| 286 | __ret = __get_user((x), __hptr); \ |
| 287 | unlock_user(__hptr, __gaddr, 0); \ |
| 288 | } else { \ |
| 289 | /* avoid warning */ \ |
| 290 | (x) = 0; \ |
| 291 | __ret = -TARGET_EFAULT; \ |
| 292 | } \ |
| 293 | __ret; \ |
| 294 | }) |
| 295 | |
| 296 | #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong) |
| 297 | #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long) |
| 298 | #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t) |
| 299 | #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t) |
| 300 | #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t) |
| 301 | #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t) |
| 302 | #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t) |
| 303 | #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t) |
| 304 | #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t) |
| 305 | #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t) |
| 306 | |
| 307 | #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong) |
| 308 | #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long) |
| 309 | #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t) |
| 310 | #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t) |
| 311 | #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t) |
| 312 | #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t) |
| 313 | #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t) |
| 314 | #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t) |
| 315 | #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t) |
| 316 | #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t) |
| 317 | |
| 318 | /* copy_from_user() and copy_to_user() are usually used to copy data |
| 319 | * buffers between the target and host. These internally perform |
| 320 | * locking/unlocking of the memory. |
| 321 | */ |
| 322 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); |
| 323 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); |
| 324 | |
| 325 | /* Functions for accessing guest memory. The tget and tput functions |
Stefan Weil | 1301f32 | 2011-04-28 17:20:37 +0200 | [diff] [blame] | 326 | read/write single values, byteswapping as necessary. The lock_user |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 327 | gets a pointer to a contiguous area of guest memory, but does not perform |
| 328 | and byteswapping. lock_user may return either a pointer to the guest |
| 329 | memory, or a temporary buffer. */ |
| 330 | |
| 331 | /* Lock an area of guest memory into the host. If copy is true then the |
| 332 | host area will have the same contents as the guest. */ |
| 333 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
| 334 | { |
| 335 | if (!access_ok(type, guest_addr, len)) |
| 336 | return NULL; |
| 337 | #ifdef DEBUG_REMAP |
| 338 | { |
| 339 | void *addr; |
| 340 | addr = malloc(len); |
| 341 | if (copy) |
| 342 | memcpy(addr, g2h(guest_addr), len); |
| 343 | else |
| 344 | memset(addr, 0, len); |
| 345 | return addr; |
| 346 | } |
| 347 | #else |
| 348 | return g2h(guest_addr); |
| 349 | #endif |
| 350 | } |
| 351 | |
| 352 | /* Unlock an area of guest memory. The first LEN bytes must be |
| 353 | flushed back to guest memory. host_ptr = NULL is explicitly |
| 354 | allowed and does nothing. */ |
| 355 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, |
| 356 | long len) |
| 357 | { |
| 358 | |
| 359 | #ifdef DEBUG_REMAP |
| 360 | if (!host_ptr) |
| 361 | return; |
| 362 | if (host_ptr == g2h(guest_addr)) |
| 363 | return; |
| 364 | if (len > 0) |
| 365 | memcpy(g2h(guest_addr), host_ptr, len); |
| 366 | free(host_ptr); |
| 367 | #endif |
| 368 | } |
| 369 | |
| 370 | /* Return the length of a string in target memory or -TARGET_EFAULT if |
| 371 | access error. */ |
| 372 | abi_long target_strlen(abi_ulong gaddr); |
| 373 | |
| 374 | /* Like lock_user but for null terminated strings. */ |
| 375 | static inline void *lock_user_string(abi_ulong guest_addr) |
| 376 | { |
| 377 | abi_long len; |
| 378 | len = target_strlen(guest_addr); |
| 379 | if (len < 0) |
| 380 | return NULL; |
| 381 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); |
| 382 | } |
| 383 | |
| 384 | /* Helper macros for locking/ulocking a target struct. */ |
| 385 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \ |
| 386 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy)) |
| 387 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ |
| 388 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
| 389 | |
Juan Quintela | 2f7bb87 | 2009-07-27 16:13:24 +0200 | [diff] [blame] | 390 | #if defined(CONFIG_USE_NPTL) |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 391 | #include <pthread.h> |
| 392 | #endif |
| 393 | |
| 394 | #endif /* QEMU_H */ |