projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3dd681d9 WD |
1 | /* |
| 2 | * Compat system call wrappers | |
| 3 | * | |
| 4 | * Copyright (C) 2012 ARM Ltd. | |
| 5 | * Authors: Will Deacon <will.deacon@arm.com> | |
| 6 | * Catalin Marinas <catalin.marinas@arm.com> | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License version 2 as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | */ | |
| 20 | ||
| 21 | #include <linux/linkage.h> | |
| 22 | ||
| 23 | #include <asm/assembler.h> | |
| 24 | #include <asm/asm-offsets.h> | |
| 25 | ||
| 26 | /* | |
| 27 | * System call wrappers for the AArch32 compatibility layer. | |
| 28 | */ | |
| 29 | compat_sys_fork_wrapper: | |
| 30 | mov x0, sp | |
| 31 | b compat_sys_fork | |
| 32 | ENDPROC(compat_sys_fork_wrapper) | |
| 33 | ||
| 34 | compat_sys_vfork_wrapper: | |
| 35 | mov x0, sp | |
| 36 | b compat_sys_vfork | |
| 37 | ENDPROC(compat_sys_vfork_wrapper) | |
| 38 | ||
| 39 | compat_sys_execve_wrapper: | |
| 40 | mov x3, sp | |
| 41 | b compat_sys_execve | |
| 42 | ENDPROC(compat_sys_execve_wrapper) | |
| 43 | ||
| 44 | compat_sys_clone_wrapper: | |
| 45 | mov x5, sp | |
| 46 | b compat_sys_clone | |
| 47 | ENDPROC(compat_sys_clone_wrapper) | |
| 48 | ||
| 49 | compat_sys_sigreturn_wrapper: | |
| 50 | mov x0, sp | |
| 51 | mov x27, #0 // prevent syscall restart handling (why) | |
| 52 | b compat_sys_sigreturn | |
| 53 | ENDPROC(compat_sys_sigreturn_wrapper) | |
| 54 | ||
| 55 | compat_sys_rt_sigreturn_wrapper: | |
| 56 | mov x0, sp | |
| 57 | mov x27, #0 // prevent syscall restart handling (why) | |
| 58 | b compat_sys_rt_sigreturn | |
| 59 | ENDPROC(compat_sys_rt_sigreturn_wrapper) | |
| 60 | ||
| 61 | compat_sys_sigaltstack_wrapper: | |
| 62 | ldr x2, [sp, #S_COMPAT_SP] | |
| 63 | b compat_do_sigaltstack | |
| 64 | ENDPROC(compat_sys_sigaltstack_wrapper) | |
| 65 | ||
| 66 | compat_sys_statfs64_wrapper: | |
| 67 | mov w3, #84 | |
| 68 | cmp w1, #88 | |
| 69 | csel w1, w3, w1, eq | |
| 70 | b compat_sys_statfs64 | |
| 71 | ENDPROC(compat_sys_statfs64_wrapper) | |
| 72 | ||
| 73 | compat_sys_fstatfs64_wrapper: | |
| 74 | mov w3, #84 | |
| 75 | cmp w1, #88 | |
| 76 | csel w1, w3, w1, eq | |
| 77 | b compat_sys_fstatfs64 | |
| 78 | ENDPROC(compat_sys_fstatfs64_wrapper) | |
| 79 | ||
| 80 | /* | |
| 81 | * Wrappers for AArch32 syscalls that either take 64-bit parameters | |
| 82 | * in registers or that take 32-bit parameters which require sign | |
| 83 | * extension. | |
| 84 | */ | |
| 85 | compat_sys_lseek_wrapper: | |
| 86 | sxtw x1, w1 | |
| 87 | b sys_lseek | |
| 88 | ENDPROC(compat_sys_lseek_wrapper) | |
| 89 | ||
| 90 | compat_sys_pread64_wrapper: | |
| 91 | orr x3, x4, x5, lsl #32 | |
| 92 | b sys_pread64 | |
| 93 | ENDPROC(compat_sys_pread64_wrapper) | |
| 94 | ||
| 95 | compat_sys_pwrite64_wrapper: | |
| 96 | orr x3, x4, x5, lsl #32 | |
| 97 | b sys_pwrite64 | |
| 98 | ENDPROC(compat_sys_pwrite64_wrapper) | |
| 99 | ||
| 100 | compat_sys_truncate64_wrapper: | |
| 101 | orr x1, x2, x3, lsl #32 | |
| 102 | b sys_truncate | |
| 103 | ENDPROC(compat_sys_truncate64_wrapper) | |
| 104 | ||
| 105 | compat_sys_ftruncate64_wrapper: | |
| 106 | orr x1, x2, x3, lsl #32 | |
| 107 | b sys_ftruncate | |
| 108 | ENDPROC(compat_sys_ftruncate64_wrapper) | |
| 109 | ||
| 110 | compat_sys_readahead_wrapper: | |
| 111 | orr x1, x2, x3, lsl #32 | |
| 112 | mov w2, w4 | |
| 113 | b sys_readahead | |
| 114 | ENDPROC(compat_sys_readahead_wrapper) | |
| 115 | ||
| 116 | compat_sys_lookup_dcookie: | |
| 117 | orr x0, x0, x1, lsl #32 | |
| 118 | mov w1, w2 | |
| 119 | mov w2, w3 | |
| 120 | b sys_lookup_dcookie | |
| 121 | ENDPROC(compat_sys_lookup_dcookie) | |
| 122 | ||
| 123 | compat_sys_fadvise64_64_wrapper: | |
| 124 | mov w6, w1 | |
| 125 | orr x1, x2, x3, lsl #32 | |
| 126 | orr x2, x4, x5, lsl #32 | |
| 127 | mov w3, w6 | |
| 128 | b sys_fadvise64_64 | |
| 129 | ENDPROC(compat_sys_fadvise64_64_wrapper) | |
| 130 | ||
| 131 | compat_sys_sync_file_range2_wrapper: | |
| 132 | orr x2, x2, x3, lsl #32 | |
| 133 | orr x3, x4, x5, lsl #32 | |
| 134 | b sys_sync_file_range2 | |
| 135 | ENDPROC(compat_sys_sync_file_range2_wrapper) | |
| 136 | ||
| 137 | compat_sys_fallocate_wrapper: | |
| 138 | orr x2, x2, x3, lsl #32 | |
| 139 | orr x3, x4, x5, lsl #32 | |
| 140 | b sys_fallocate | |
| 141 | ENDPROC(compat_sys_fallocate_wrapper) | |
| 142 | ||
| 143 | compat_sys_fanotify_mark_wrapper: | |
| 144 | orr x2, x2, x3, lsl #32 | |
| 145 | mov w3, w4 | |
| 146 | mov w4, w5 | |
| 147 | b sys_fanotify_mark | |
| 148 | ENDPROC(compat_sys_fanotify_mark_wrapper) | |
| 149 | ||
| 150 | /* | |
| 151 | * Use the compat system call wrappers. | |
| 152 | */ | |
| 153 | #define sys_fork compat_sys_fork_wrapper | |
| 154 | #define sys_open compat_sys_open | |
| 155 | #define sys_execve compat_sys_execve_wrapper | |
| 156 | #define sys_lseek compat_sys_lseek_wrapper | |
| 157 | #define sys_mount compat_sys_mount | |
| 158 | #define sys_ptrace compat_sys_ptrace | |
| 159 | #define sys_times compat_sys_times | |
| 160 | #define sys_ioctl compat_sys_ioctl | |
| 161 | #define sys_fcntl compat_sys_fcntl | |
| 162 | #define sys_ustat compat_sys_ustat | |
| 163 | #define sys_sigaction compat_sys_sigaction | |
| 164 | #define sys_sigsuspend compat_sys_sigsuspend | |
| 165 | #define sys_sigpending compat_sys_sigpending | |
| 166 | #define sys_setrlimit compat_sys_setrlimit | |
| 167 | #define sys_getrusage compat_sys_getrusage | |
| 168 | #define sys_gettimeofday compat_sys_gettimeofday | |
| 169 | #define sys_settimeofday compat_sys_settimeofday | |
| 170 | #define sys_statfs compat_sys_statfs | |
| 171 | #define sys_fstatfs compat_sys_fstatfs | |
| 172 | #define sys_setitimer compat_sys_setitimer | |
| 173 | #define sys_getitimer compat_sys_getitimer | |
| 174 | #define sys_newstat compat_sys_newstat | |
| 175 | #define sys_newlstat compat_sys_newlstat | |
| 176 | #define sys_newfstat compat_sys_newfstat | |
| 177 | #define sys_wait4 compat_sys_wait4 | |
| 178 | #define sys_sysinfo compat_sys_sysinfo | |
| 179 | #define sys_sigreturn compat_sys_sigreturn_wrapper | |
| 180 | #define sys_clone compat_sys_clone_wrapper | |
| 181 | #define sys_adjtimex compat_sys_adjtimex | |
| 182 | #define sys_sigprocmask compat_sys_sigprocmask | |
| 183 | #define sys_getdents compat_sys_getdents | |
| 184 | #define sys_select compat_sys_select | |
| 185 | #define sys_readv compat_sys_readv | |
| 186 | #define sys_writev compat_sys_writev | |
| 187 | #define sys_sysctl compat_sys_sysctl | |
| 188 | #define sys_sched_rr_get_interval compat_sys_sched_rr_get_interval | |
| 189 | #define sys_nanosleep compat_sys_nanosleep | |
| 190 | #define sys_rt_sigreturn compat_sys_rt_sigreturn_wrapper | |
| 191 | #define sys_rt_sigaction compat_sys_rt_sigaction | |
| 192 | #define sys_rt_sigprocmask compat_sys_rt_sigprocmask | |
| 193 | #define sys_rt_sigpending compat_sys_rt_sigpending | |
| 194 | #define sys_rt_sigtimedwait compat_sys_rt_sigtimedwait | |
| 195 | #define sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo | |
| 196 | #define sys_rt_sigsuspend compat_sys_rt_sigsuspend | |
| 197 | #define sys_pread64 compat_sys_pread64_wrapper | |
| 198 | #define sys_pwrite64 compat_sys_pwrite64_wrapper | |
| 199 | #define sys_sigaltstack compat_sys_sigaltstack_wrapper | |
| 200 | #define sys_sendfile compat_sys_sendfile | |
| 201 | #define sys_vfork compat_sys_vfork_wrapper | |
| 202 | #define sys_getrlimit compat_sys_getrlimit | |
| 203 | #define sys_mmap2 sys_mmap_pgoff | |
| 204 | #define sys_truncate64 compat_sys_truncate64_wrapper | |
| 205 | #define sys_ftruncate64 compat_sys_ftruncate64_wrapper | |
| 206 | #define sys_getdents64 compat_sys_getdents64 | |
| 207 | #define sys_fcntl64 compat_sys_fcntl64 | |
| 208 | #define sys_readahead compat_sys_readahead_wrapper | |
| 209 | #define sys_futex compat_sys_futex | |
| 210 | #define sys_sched_setaffinity compat_sys_sched_setaffinity | |
| 211 | #define sys_sched_getaffinity compat_sys_sched_getaffinity | |
| 212 | #define sys_io_setup compat_sys_io_setup | |
| 213 | #define sys_io_getevents compat_sys_io_getevents | |
| 214 | #define sys_io_submit compat_sys_io_submit | |
| 215 | #define sys_lookup_dcookie compat_sys_lookup_dcookie | |
| 216 | #define sys_timer_create compat_sys_timer_create | |
| 217 | #define sys_timer_settime compat_sys_timer_settime | |
| 218 | #define sys_timer_gettime compat_sys_timer_gettime | |
| 219 | #define sys_clock_settime compat_sys_clock_settime | |
| 220 | #define sys_clock_gettime compat_sys_clock_gettime | |
| 221 | #define sys_clock_getres compat_sys_clock_getres | |
| 222 | #define sys_clock_nanosleep compat_sys_clock_nanosleep | |
| 223 | #define sys_statfs64 compat_sys_statfs64_wrapper | |
| 224 | #define sys_fstatfs64 compat_sys_fstatfs64_wrapper | |
| 225 | #define sys_utimes compat_sys_utimes | |
| 226 | #define sys_fadvise64_64 compat_sys_fadvise64_64_wrapper | |
| 227 | #define sys_mq_open compat_sys_mq_open | |
| 228 | #define sys_mq_timedsend compat_sys_mq_timedsend | |
| 229 | #define sys_mq_timedreceive compat_sys_mq_timedreceive | |
| 230 | #define sys_mq_notify compat_sys_mq_notify | |
| 231 | #define sys_mq_getsetattr compat_sys_mq_getsetattr | |
| 232 | #define sys_waitid compat_sys_waitid | |
| 233 | #define sys_recv compat_sys_recv | |
| 234 | #define sys_recvfrom compat_sys_recvfrom | |
| 235 | #define sys_setsockopt compat_sys_setsockopt | |
| 236 | #define sys_getsockopt compat_sys_getsockopt | |
| 237 | #define sys_sendmsg compat_sys_sendmsg | |
| 238 | #define sys_recvmsg compat_sys_recvmsg | |
| 239 | #define sys_semctl compat_sys_semctl | |
| 240 | #define sys_msgsnd compat_sys_msgsnd | |
| 241 | #define sys_msgrcv compat_sys_msgrcv | |
| 242 | #define sys_msgctl compat_sys_msgctl | |
| 243 | #define sys_shmat compat_sys_shmat | |
| 244 | #define sys_shmctl compat_sys_shmctl | |
| 245 | #define sys_keyctl compat_sys_keyctl | |
| 246 | #define sys_semtimedop compat_sys_semtimedop | |
| 247 | #define sys_mbind compat_sys_mbind | |
| 248 | #define sys_get_mempolicy compat_sys_get_mempolicy | |
| 249 | #define sys_set_mempolicy compat_sys_set_mempolicy | |
| 250 | #define sys_openat compat_sys_openat | |
| 251 | #define sys_futimesat compat_sys_futimesat | |
| 252 | #define sys_pselect6 compat_sys_pselect6 | |
| 253 | #define sys_ppoll compat_sys_ppoll | |
| 254 | #define sys_set_robust_list compat_sys_set_robust_list | |
| 255 | #define sys_get_robust_list compat_sys_get_robust_list | |
| 256 | #define sys_sync_file_range2 compat_sys_sync_file_range2_wrapper | |
| 257 | #define sys_vmsplice compat_sys_vmsplice | |
| 258 | #define sys_move_pages compat_sys_move_pages | |
| 259 | #define sys_epoll_pwait compat_sys_epoll_pwait | |
| 260 | #define sys_kexec_load compat_sys_kexec_load | |
| 261 | #define sys_utimensat compat_sys_utimensat | |
| 262 | #define sys_signalfd compat_sys_signalfd | |
| 263 | #define sys_fallocate compat_sys_fallocate_wrapper | |
| 264 | #define sys_timerfd_settime compat_sys_timerfd_settime | |
| 265 | #define sys_timerfd_gettime compat_sys_timerfd_gettime | |
| 266 | #define sys_signalfd4 compat_sys_signalfd4 | |
| 267 | #define sys_preadv compat_sys_preadv | |
| 268 | #define sys_pwritev compat_sys_pwritev | |
| 269 | #define sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo | |
| 270 | #define sys_recvmmsg compat_sys_recvmmsg | |
| 271 | #define sys_fanotify_mark compat_sys_fanotify_mark_wrapper | |
| 272 | ||
| 273 | #undef __SYSCALL | |
| 274 | #define __SYSCALL(x, y) .quad y // x | |
| 275 | #define __SYSCALL_COMPAT | |
| 276 | ||
| 277 | /* | |
| 278 | * The system calls table must be 4KB aligned. | |
| 279 | */ | |
| 280 | .align 12 | |
| 281 | ENTRY(compat_sys_call_table) | |
| 282 | #include <asm/unistd.h> |