Sean Bruno | 88dae46 | 2014-06-08 09:57:23 -0700 | [diff] [blame] | 1 | /* |
| 2 | * qemu bsd user mode definition |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 17 | #ifndef QEMU_H |
| 18 | #define QEMU_H |
| 19 | |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 20 | |
| 21 | #include "cpu.h" |
Paolo Bonzini | 63c9155 | 2016-03-15 13:18:37 +0100 | [diff] [blame] | 22 | #include "exec/exec-all.h" |
Paolo Bonzini | f08b617 | 2014-03-28 19:42:10 +0100 | [diff] [blame] | 23 | #include "exec/cpu_ldst.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 24 | |
| 25 | #undef DEBUG_REMAP |
| 26 | #ifdef DEBUG_REMAP |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 27 | #endif /* DEBUG_REMAP */ |
| 28 | |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 29 | #include "exec/user/abitypes.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 30 | |
| 31 | enum BSDType { |
| 32 | target_freebsd, |
| 33 | target_netbsd, |
| 34 | target_openbsd, |
| 35 | }; |
Juergen Lock | 78cfb07 | 2009-10-17 00:34:26 +0200 | [diff] [blame] | 36 | extern enum BSDType bsd_type; |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 37 | |
| 38 | #include "syscall_defs.h" |
Lluís Vilanova | 0c6940d | 2016-02-01 19:38:47 +0100 | [diff] [blame] | 39 | #include "target_syscall.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 40 | #include "target_signal.h" |
Paolo Bonzini | 022c62c | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 41 | #include "exec/gdbstub.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 42 | |
Juan Quintela | 2f7bb87 | 2009-07-27 16:13:24 +0200 | [diff] [blame] | 43 | #if defined(CONFIG_USE_NPTL) |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 44 | #define THREAD __thread |
| 45 | #else |
| 46 | #define THREAD |
| 47 | #endif |
| 48 | |
| 49 | /* This struct is used to hold certain information about the image. |
| 50 | * Basically, it replicates in user space what would be certain |
| 51 | * task_struct fields in the kernel |
| 52 | */ |
| 53 | struct image_info { |
| 54 | abi_ulong load_addr; |
| 55 | abi_ulong start_code; |
| 56 | abi_ulong end_code; |
| 57 | abi_ulong start_data; |
| 58 | abi_ulong end_data; |
| 59 | abi_ulong start_brk; |
| 60 | abi_ulong brk; |
| 61 | abi_ulong start_mmap; |
| 62 | abi_ulong mmap; |
| 63 | abi_ulong rss; |
| 64 | abi_ulong start_stack; |
| 65 | abi_ulong entry; |
| 66 | abi_ulong code_offset; |
| 67 | abi_ulong data_offset; |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 68 | int personality; |
| 69 | }; |
| 70 | |
| 71 | #define MAX_SIGQUEUE_SIZE 1024 |
| 72 | |
| 73 | struct sigqueue { |
| 74 | struct sigqueue *next; |
| 75 | //target_siginfo_t info; |
| 76 | }; |
| 77 | |
| 78 | struct emulated_sigtable { |
| 79 | int pending; /* true if signal is pending */ |
| 80 | struct sigqueue *first; |
| 81 | struct sigqueue info; /* in order to always have memory for the |
| 82 | first signal, we put it here */ |
| 83 | }; |
| 84 | |
| 85 | /* NOTE: we force a big alignment so that the stack stored after is |
| 86 | aligned too */ |
| 87 | typedef struct TaskState { |
Alex Bennée | bd88c78 | 2017-07-12 11:52:15 +0100 | [diff] [blame] | 88 | pid_t ts_tid; /* tid (or pid) of this task */ |
| 89 | |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 90 | struct TaskState *next; |
| 91 | int used; /* non zero if used */ |
| 92 | struct image_info *info; |
| 93 | |
| 94 | struct emulated_sigtable sigtab[TARGET_NSIG]; |
| 95 | struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */ |
| 96 | struct sigqueue *first_free; /* first free siginfo queue entry */ |
| 97 | int signal_pending; /* non zero if a signal may be pending */ |
| 98 | |
| 99 | uint8_t stack[0]; |
| 100 | } __attribute__((aligned(16))) TaskState; |
| 101 | |
| 102 | void init_task_state(TaskState *ts); |
| 103 | extern const char *qemu_uname_release; |
Blue Swirl | 2fa5d9b | 2009-09-27 19:30:51 +0000 | [diff] [blame] | 104 | extern unsigned long mmap_min_addr; |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 105 | |
| 106 | /* ??? See if we can avoid exposing so much of the loader internals. */ |
| 107 | /* |
| 108 | * MAX_ARG_PAGES defines the number of pages allocated for arguments |
| 109 | * and envelope for the new program. 32 should suffice, this gives |
| 110 | * a maximum env+arg of 128kB w/4KB pages! |
| 111 | */ |
| 112 | #define MAX_ARG_PAGES 32 |
| 113 | |
| 114 | /* |
| 115 | * This structure is used to hold the arguments that are |
| 116 | * used when loading binaries. |
| 117 | */ |
| 118 | struct linux_binprm { |
| 119 | char buf[128]; |
| 120 | void *page[MAX_ARG_PAGES]; |
| 121 | abi_ulong p; |
| 122 | int fd; |
| 123 | int e_uid, e_gid; |
| 124 | int argc, envc; |
| 125 | char **argv; |
| 126 | char **envp; |
| 127 | char * filename; /* Name of binary */ |
| 128 | }; |
| 129 | |
| 130 | void do_init_thread(struct target_pt_regs *regs, struct image_info *infop); |
| 131 | abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, |
| 132 | abi_ulong stringp, int push_ptr); |
| 133 | int loader_exec(const char * filename, char ** argv, char ** envp, |
| 134 | struct target_pt_regs * regs, struct image_info *infop); |
| 135 | |
| 136 | int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
| 137 | struct image_info * info); |
| 138 | int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs, |
| 139 | struct image_info * info); |
| 140 | |
| 141 | abi_long memcpy_to_target(abi_ulong dest, const void *src, |
| 142 | unsigned long len); |
| 143 | void target_set_brk(abi_ulong new_brk); |
| 144 | abi_long do_brk(abi_ulong new_brk); |
| 145 | void syscall_init(void); |
| 146 | abi_long do_freebsd_syscall(void *cpu_env, int num, abi_long arg1, |
| 147 | abi_long arg2, abi_long arg3, abi_long arg4, |
Juergen Lock | 78cfb07 | 2009-10-17 00:34:26 +0200 | [diff] [blame] | 148 | abi_long arg5, abi_long arg6, abi_long arg7, |
| 149 | abi_long arg8); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 150 | abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long arg1, |
| 151 | abi_long arg2, abi_long arg3, abi_long arg4, |
| 152 | abi_long arg5, abi_long arg6); |
| 153 | abi_long do_openbsd_syscall(void *cpu_env, int num, abi_long arg1, |
| 154 | abi_long arg2, abi_long arg3, abi_long arg4, |
| 155 | abi_long arg5, abi_long arg6); |
Stefan Weil | e5924d8 | 2010-09-23 21:28:03 +0200 | [diff] [blame] | 156 | void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2); |
Andreas Färber | dca1173 | 2013-06-09 19:51:23 +0200 | [diff] [blame] | 157 | extern THREAD CPUState *thread_cpu; |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 158 | void cpu_loop(CPUArchState *env); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 159 | char *target_strerror(int err); |
| 160 | int get_osversion(void); |
| 161 | void fork_start(void); |
| 162 | void fork_end(int child); |
| 163 | |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 164 | #include "qemu/log.h" |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 165 | |
| 166 | /* strace.c */ |
Sean Bruno | 88dae46 | 2014-06-08 09:57:23 -0700 | [diff] [blame] | 167 | struct syscallname { |
| 168 | int nr; |
| 169 | const char *name; |
| 170 | const char *format; |
| 171 | void (*call)(const struct syscallname *, |
| 172 | abi_long, abi_long, abi_long, |
| 173 | abi_long, abi_long, abi_long); |
| 174 | void (*result)(const struct syscallname *, abi_long); |
| 175 | }; |
| 176 | |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 177 | void |
| 178 | print_freebsd_syscall(int num, |
| 179 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 180 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 181 | void print_freebsd_syscall_ret(int num, abi_long ret); |
| 182 | void |
| 183 | print_netbsd_syscall(int num, |
| 184 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 185 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 186 | void print_netbsd_syscall_ret(int num, abi_long ret); |
| 187 | void |
| 188 | print_openbsd_syscall(int num, |
| 189 | abi_long arg1, abi_long arg2, abi_long arg3, |
| 190 | abi_long arg4, abi_long arg5, abi_long arg6); |
| 191 | void print_openbsd_syscall_ret(int num, abi_long ret); |
| 192 | extern int do_strace; |
| 193 | |
| 194 | /* signal.c */ |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 195 | void process_pending_signals(CPUArchState *cpu_env); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 196 | void signal_init(void); |
Andreas Färber | 9349b4f | 2012-03-14 01:38:32 +0100 | [diff] [blame] | 197 | //int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 198 | //void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info); |
| 199 | //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] | 200 | long do_sigreturn(CPUArchState *env); |
| 201 | long do_rt_sigreturn(CPUArchState *env); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 202 | abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); |
| 203 | |
| 204 | /* mmap.c */ |
| 205 | int target_mprotect(abi_ulong start, abi_ulong len, int prot); |
| 206 | abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, |
| 207 | int flags, int fd, abi_ulong offset); |
| 208 | int target_munmap(abi_ulong start, abi_ulong len); |
| 209 | abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, |
| 210 | abi_ulong new_size, unsigned long flags, |
| 211 | abi_ulong new_addr); |
| 212 | int target_msync(abi_ulong start, abi_ulong len, int flags); |
| 213 | extern unsigned long last_brk; |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 214 | void mmap_fork_start(void); |
| 215 | void mmap_fork_end(int child); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 216 | |
Blue Swirl | 28e738d | 2009-08-01 10:29:42 +0000 | [diff] [blame] | 217 | /* main.c */ |
| 218 | extern unsigned long x86_stack_size; |
| 219 | |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 220 | /* user access */ |
| 221 | |
| 222 | #define VERIFY_READ 0 |
| 223 | #define VERIFY_WRITE 1 /* implies read access */ |
| 224 | |
| 225 | static inline int access_ok(int type, abi_ulong addr, abi_ulong size) |
| 226 | { |
| 227 | return page_check_range((target_ulong)addr, size, |
| 228 | (type == VERIFY_READ) ? PAGE_READ : (PAGE_READ | PAGE_WRITE)) == 0; |
| 229 | } |
| 230 | |
| 231 | /* NOTE __get_user and __put_user use host pointers and don't check access. */ |
| 232 | /* These are usually used to access struct data members once the |
| 233 | * struct has been locked - usually with lock_user_struct(). |
| 234 | */ |
| 235 | #define __put_user(x, hptr)\ |
| 236 | ({\ |
| 237 | int size = sizeof(*hptr);\ |
| 238 | switch(size) {\ |
| 239 | case 1:\ |
| 240 | *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\ |
| 241 | break;\ |
| 242 | case 2:\ |
| 243 | *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\ |
| 244 | break;\ |
| 245 | case 4:\ |
| 246 | *(uint32_t *)(hptr) = tswap32((typeof(*hptr))(x));\ |
| 247 | break;\ |
| 248 | case 8:\ |
| 249 | *(uint64_t *)(hptr) = tswap64((typeof(*hptr))(x));\ |
| 250 | break;\ |
| 251 | default:\ |
| 252 | abort();\ |
| 253 | }\ |
| 254 | 0;\ |
| 255 | }) |
| 256 | |
| 257 | #define __get_user(x, hptr) \ |
| 258 | ({\ |
| 259 | int size = sizeof(*hptr);\ |
| 260 | switch(size) {\ |
| 261 | case 1:\ |
| 262 | x = (typeof(*hptr))*(uint8_t *)(hptr);\ |
| 263 | break;\ |
| 264 | case 2:\ |
| 265 | x = (typeof(*hptr))tswap16(*(uint16_t *)(hptr));\ |
| 266 | break;\ |
| 267 | case 4:\ |
| 268 | x = (typeof(*hptr))tswap32(*(uint32_t *)(hptr));\ |
| 269 | break;\ |
| 270 | case 8:\ |
| 271 | x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\ |
| 272 | break;\ |
| 273 | default:\ |
| 274 | /* avoid warning */\ |
| 275 | x = 0;\ |
| 276 | abort();\ |
| 277 | }\ |
| 278 | 0;\ |
| 279 | }) |
| 280 | |
| 281 | /* put_user()/get_user() take a guest address and check access */ |
| 282 | /* These are usually used to access an atomic data type, such as an int, |
| 283 | * that has been passed by address. These internally perform locking |
| 284 | * and unlocking on the data type. |
| 285 | */ |
| 286 | #define put_user(x, gaddr, target_type) \ |
| 287 | ({ \ |
| 288 | abi_ulong __gaddr = (gaddr); \ |
| 289 | target_type *__hptr; \ |
| 290 | abi_long __ret; \ |
| 291 | if ((__hptr = lock_user(VERIFY_WRITE, __gaddr, sizeof(target_type), 0))) { \ |
| 292 | __ret = __put_user((x), __hptr); \ |
| 293 | unlock_user(__hptr, __gaddr, sizeof(target_type)); \ |
| 294 | } else \ |
| 295 | __ret = -TARGET_EFAULT; \ |
| 296 | __ret; \ |
| 297 | }) |
| 298 | |
| 299 | #define get_user(x, gaddr, target_type) \ |
| 300 | ({ \ |
| 301 | abi_ulong __gaddr = (gaddr); \ |
| 302 | target_type *__hptr; \ |
| 303 | abi_long __ret; \ |
| 304 | if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \ |
| 305 | __ret = __get_user((x), __hptr); \ |
| 306 | unlock_user(__hptr, __gaddr, 0); \ |
| 307 | } else { \ |
| 308 | /* avoid warning */ \ |
| 309 | (x) = 0; \ |
| 310 | __ret = -TARGET_EFAULT; \ |
| 311 | } \ |
| 312 | __ret; \ |
| 313 | }) |
| 314 | |
| 315 | #define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong) |
| 316 | #define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long) |
| 317 | #define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t) |
| 318 | #define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t) |
| 319 | #define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t) |
| 320 | #define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t) |
| 321 | #define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t) |
| 322 | #define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t) |
| 323 | #define put_user_u8(x, gaddr) put_user((x), (gaddr), uint8_t) |
| 324 | #define put_user_s8(x, gaddr) put_user((x), (gaddr), int8_t) |
| 325 | |
| 326 | #define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong) |
| 327 | #define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long) |
| 328 | #define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t) |
| 329 | #define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t) |
| 330 | #define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t) |
| 331 | #define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t) |
| 332 | #define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t) |
| 333 | #define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t) |
| 334 | #define get_user_u8(x, gaddr) get_user((x), (gaddr), uint8_t) |
| 335 | #define get_user_s8(x, gaddr) get_user((x), (gaddr), int8_t) |
| 336 | |
| 337 | /* copy_from_user() and copy_to_user() are usually used to copy data |
| 338 | * buffers between the target and host. These internally perform |
| 339 | * locking/unlocking of the memory. |
| 340 | */ |
| 341 | abi_long copy_from_user(void *hptr, abi_ulong gaddr, size_t len); |
| 342 | abi_long copy_to_user(abi_ulong gaddr, void *hptr, size_t len); |
| 343 | |
| 344 | /* Functions for accessing guest memory. The tget and tput functions |
Stefan Weil | 6f20f55 | 2013-09-12 19:57:15 +0200 | [diff] [blame] | 345 | read/write single values, byteswapping as necessary. The lock_user function |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 346 | gets a pointer to a contiguous area of guest memory, but does not perform |
Stefan Weil | 6f20f55 | 2013-09-12 19:57:15 +0200 | [diff] [blame] | 347 | any byteswapping. lock_user may return either a pointer to the guest |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 348 | memory, or a temporary buffer. */ |
| 349 | |
| 350 | /* Lock an area of guest memory into the host. If copy is true then the |
| 351 | host area will have the same contents as the guest. */ |
| 352 | static inline void *lock_user(int type, abi_ulong guest_addr, long len, int copy) |
| 353 | { |
| 354 | if (!access_ok(type, guest_addr, len)) |
| 355 | return NULL; |
| 356 | #ifdef DEBUG_REMAP |
| 357 | { |
| 358 | void *addr; |
Md Haris Iqbal | fd9a304 | 2016-04-05 18:39:03 +0530 | [diff] [blame] | 359 | addr = g_malloc(len); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 360 | if (copy) |
| 361 | memcpy(addr, g2h(guest_addr), len); |
| 362 | else |
| 363 | memset(addr, 0, len); |
| 364 | return addr; |
| 365 | } |
| 366 | #else |
| 367 | return g2h(guest_addr); |
| 368 | #endif |
| 369 | } |
| 370 | |
| 371 | /* Unlock an area of guest memory. The first LEN bytes must be |
| 372 | flushed back to guest memory. host_ptr = NULL is explicitly |
| 373 | allowed and does nothing. */ |
| 374 | static inline void unlock_user(void *host_ptr, abi_ulong guest_addr, |
| 375 | long len) |
| 376 | { |
| 377 | |
| 378 | #ifdef DEBUG_REMAP |
| 379 | if (!host_ptr) |
| 380 | return; |
| 381 | if (host_ptr == g2h(guest_addr)) |
| 382 | return; |
| 383 | if (len > 0) |
| 384 | memcpy(g2h(guest_addr), host_ptr, len); |
Md Haris Iqbal | fd9a304 | 2016-04-05 18:39:03 +0530 | [diff] [blame] | 385 | g_free(host_ptr); |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 386 | #endif |
| 387 | } |
| 388 | |
| 389 | /* Return the length of a string in target memory or -TARGET_EFAULT if |
| 390 | access error. */ |
| 391 | abi_long target_strlen(abi_ulong gaddr); |
| 392 | |
| 393 | /* Like lock_user but for null terminated strings. */ |
| 394 | static inline void *lock_user_string(abi_ulong guest_addr) |
| 395 | { |
| 396 | abi_long len; |
| 397 | len = target_strlen(guest_addr); |
| 398 | if (len < 0) |
| 399 | return NULL; |
| 400 | return lock_user(VERIFY_READ, guest_addr, (long)(len + 1), 1); |
| 401 | } |
| 402 | |
Stefan Weil | 41d1af4 | 2013-09-12 19:57:41 +0200 | [diff] [blame] | 403 | /* Helper macros for locking/unlocking a target struct. */ |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 404 | #define lock_user_struct(type, host_ptr, guest_addr, copy) \ |
| 405 | (host_ptr = lock_user(type, guest_addr, sizeof(*host_ptr), copy)) |
| 406 | #define unlock_user_struct(host_ptr, guest_addr, copy) \ |
| 407 | unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0) |
| 408 | |
Juan Quintela | 2f7bb87 | 2009-07-27 16:13:24 +0200 | [diff] [blame] | 409 | #if defined(CONFIG_USE_NPTL) |
blueswir1 | 8477850 | 2008-10-26 20:33:16 +0000 | [diff] [blame] | 410 | #include <pthread.h> |
| 411 | #endif |
| 412 | |
| 413 | #endif /* QEMU_H */ |