1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01 by Ralf Baechle 7 * Copyright (C) 1999, 2000 Silicon Graphics, Inc. 8 * Copyright (C) 2001 MIPS Technologies, Inc. 9 */ 10#include <linux/config.h> 11#include <linux/errno.h> 12#include <asm/asm.h> 13#include <asm/asmmacro.h> 14#include <asm/mipsregs.h> 15#include <asm/regdef.h> 16#include <asm/stackframe.h> 17#include <asm/thread_info.h> 18#include <asm/unistd.h> 19 20/* This duplicates the definition from <linux/sched.h> */ 21#define PT_TRACESYS 0x00000002 /* tracing system calls */ 22 23/* This duplicates the definition from <asm/signal.h> */ 24#define SIGILL 4 /* Illegal instruction (ANSI). */ 25 26#ifndef CONFIG_MIPS32_O32 27/* No O32, so define handle_sys here */ 28#define handle_sysn32 handle_sys 29#endif 30 31 .align 5 32NESTED(handle_sysn32, PT_SIZE, sp) 33#ifndef CONFIG_MIPS32_O32 34 .set noat 35 SAVE_SOME 36 STI 37 .set at 38#endif 39 40 dsubu t0, v0, __NR_N32_Linux # check syscall number 41 sltiu t0, t0, __NR_N32_Linux_syscalls + 1 42 43#ifndef CONFIG_MIPS32_O32 44 ld t1, PT_EPC(sp) # skip syscall on return 45 daddiu t1, 4 # skip to next instruction 46 sd t1, PT_EPC(sp) 47#endif 48 beqz t0, not_n32_scall 49 50 dsll t0, v0, 3 # offset into table 51 ld t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0) 52 53 sd a3, PT_R26(sp) # save a3 for syscall restarting 54 55 li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT 56 LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? 57 and t0, t1, t0 58 bnez t0, n32_syscall_trace_entry 59 60 jalr t2 # Do The Real Thing (TM) 61 62 li t0, -EMAXERRNO - 1 # error? 63 sltu t0, t0, v0 64 sd t0, PT_R7(sp) # set error flag 65 beqz t0, 1f 66 67 dnegu v0 # error 68 sd v0, PT_R0(sp) # set flag for syscall restarting 691: sd v0, PT_R2(sp) # result 70 71 local_irq_disable # make sure need_resched and 72 # signals dont change between 73 # sampling and return 74 LONG_L a2, TI_FLAGS($28) # current->work 75 li t0, _TIF_ALLWORK_MASK 76 and t0, a2, t0 77 bnez t0, n32_syscall_exit_work 78 79 j restore_partial 80 81n32_syscall_exit_work: 82 j syscall_exit_work_partial 83 84/* ------------------------------------------------------------------------ */ 85 86n32_syscall_trace_entry: 87 SAVE_STATIC 88 move s0, t2 89 move a0, sp 90 li a1, 0 91 jal do_syscall_trace 92 93 move t0, s0 94 RESTORE_STATIC 95 ld a0, PT_R4(sp) # Restore argument registers 96 ld a1, PT_R5(sp) 97 ld a2, PT_R6(sp) 98 ld a3, PT_R7(sp) 99 ld a4, PT_R8(sp) 100 ld a5, PT_R9(sp) 101 jalr t0 102 103 li t0, -EMAXERRNO - 1 # error? 104 sltu t0, t0, v0 105 sd t0, PT_R7(sp) # set error flag 106 beqz t0, 1f 107 108 dnegu v0 # error 109 sd v0, PT_R0(sp) # set flag for syscall restarting 1101: sd v0, PT_R2(sp) # result 111 112 j syscall_exit 113 114not_n32_scall: 115 /* This is not an n32 compatibility syscall, pass it on to 116 the n64 syscall handlers. */ 117 j handle_sys64 118 119 END(handle_sysn32) 120 121EXPORT(sysn32_call_table) 122 PTR sys_read /* 6000 */ 123 PTR sys_write 124 PTR sys_open 125 PTR sys_close 126 PTR sys_newstat 127 PTR sys_newfstat /* 6005 */ 128 PTR sys_newlstat 129 PTR sys_poll 130 PTR sys_lseek 131 PTR old_mmap 132 PTR sys_mprotect /* 6010 */ 133 PTR sys_munmap 134 PTR sys_brk 135 PTR sys32_rt_sigaction 136 PTR sys32_rt_sigprocmask 137 PTR compat_sys_ioctl /* 6015 */ 138 PTR sys_pread64 139 PTR sys_pwrite64 140 PTR compat_sys_readv 141 PTR compat_sys_writev 142 PTR sys_access /* 6020 */ 143 PTR sys_pipe 144 PTR compat_sys_select 145 PTR sys_sched_yield 146 PTR sys_mremap 147 PTR sys_msync /* 6025 */ 148 PTR sys_mincore 149 PTR sys_madvise 150 PTR sys_shmget 151 PTR sys32_shmat 152 PTR sys_shmctl /* 6030 */ 153 PTR sys_dup 154 PTR sys_dup2 155 PTR sys_pause 156 PTR compat_sys_nanosleep 157 PTR compat_sys_getitimer /* 6035 */ 158 PTR compat_sys_setitimer 159 PTR sys_alarm 160 PTR sys_getpid 161 PTR sys32_sendfile 162 PTR sys_socket /* 6040 */ 163 PTR sys_connect 164 PTR sys_accept 165 PTR sys_sendto 166 PTR sys_recvfrom 167 PTR compat_sys_sendmsg /* 6045 */ 168 PTR compat_sys_recvmsg 169 PTR sys_shutdown 170 PTR sys_bind 171 PTR sys_listen 172 PTR sys_getsockname /* 6050 */ 173 PTR sys_getpeername 174 PTR sys_socketpair 175 PTR compat_sys_setsockopt 176 PTR sys_getsockopt 177 PTR sys_clone /* 6055 */ 178 PTR sys_fork 179 PTR sys32_execve 180 PTR sys_exit 181 PTR compat_sys_wait4 182 PTR sys_kill /* 6060 */ 183 PTR sys32_newuname 184 PTR sys_semget 185 PTR sys_semop 186 PTR sys_semctl 187 PTR sys_shmdt /* 6065 */ 188 PTR sys_msgget 189 PTR sys_msgsnd 190 PTR sys_msgrcv 191 PTR sys_msgctl 192 PTR compat_sys_fcntl /* 6070 */ 193 PTR sys_flock 194 PTR sys_fsync 195 PTR sys_fdatasync 196 PTR sys_truncate 197 PTR sys_ftruncate /* 6075 */ 198 PTR sys32_getdents 199 PTR sys_getcwd 200 PTR sys_chdir 201 PTR sys_fchdir 202 PTR sys_rename /* 6080 */ 203 PTR sys_mkdir 204 PTR sys_rmdir 205 PTR sys_creat 206 PTR sys_link 207 PTR sys_unlink /* 6085 */ 208 PTR sys_symlink 209 PTR sys_readlink 210 PTR sys_chmod 211 PTR sys_fchmod 212 PTR sys_chown /* 6090 */ 213 PTR sys_fchown 214 PTR sys_lchown 215 PTR sys_umask 216 PTR sys32_gettimeofday 217 PTR compat_sys_getrlimit /* 6095 */ 218 PTR compat_sys_getrusage 219 PTR sys32_sysinfo 220 PTR compat_sys_times 221 PTR sys32_ptrace 222 PTR sys_getuid /* 6100 */ 223 PTR sys_syslog 224 PTR sys_getgid 225 PTR sys_setuid 226 PTR sys_setgid 227 PTR sys_geteuid /* 6105 */ 228 PTR sys_getegid 229 PTR sys_setpgid 230 PTR sys_getppid 231 PTR sys_getpgrp 232 PTR sys_setsid /* 6110 */ 233 PTR sys_setreuid 234 PTR sys_setregid 235 PTR sys_getgroups 236 PTR sys_setgroups 237 PTR sys_setresuid /* 6115 */ 238 PTR sys_getresuid 239 PTR sys_setresgid 240 PTR sys_getresgid 241 PTR sys_getpgid 242 PTR sys_setfsuid /* 6120 */ 243 PTR sys_setfsgid 244 PTR sys_getsid 245 PTR sys_capget 246 PTR sys_capset 247 PTR sys32_rt_sigpending /* 6125 */ 248 PTR sysn32_rt_sigtimedwait 249 PTR sys_rt_sigqueueinfo 250 PTR sys32_rt_sigsuspend 251 PTR sys32_sigaltstack 252 PTR compat_sys_utime /* 6130 */ 253 PTR sys_mknod 254 PTR sys32_personality 255 PTR sys32_ustat 256 PTR compat_sys_statfs 257 PTR compat_sys_fstatfs /* 6135 */ 258 PTR sys_sysfs 259 PTR sys_getpriority 260 PTR sys_setpriority 261 PTR sys_sched_setparam 262 PTR sys_sched_getparam /* 6140 */ 263 PTR sys_sched_setscheduler 264 PTR sys_sched_getscheduler 265 PTR sys_sched_get_priority_max 266 PTR sys_sched_get_priority_min 267 PTR sys32_sched_rr_get_interval /* 6145 */ 268 PTR sys_mlock 269 PTR sys_munlock 270 PTR sys_mlockall 271 PTR sys_munlockall 272 PTR sys_vhangup /* 6150 */ 273 PTR sys_pivot_root 274 PTR sys32_sysctl 275 PTR sys_prctl 276 PTR sys32_adjtimex 277 PTR compat_sys_setrlimit /* 6155 */ 278 PTR sys_chroot 279 PTR sys_sync 280 PTR sys_acct 281 PTR sys32_settimeofday 282 PTR sys_mount /* 6160 */ 283 PTR sys_umount 284 PTR sys_swapon 285 PTR sys_swapoff 286 PTR sys_reboot 287 PTR sys_sethostname /* 6165 */ 288 PTR sys_setdomainname 289 PTR sys_ni_syscall /* was create_module */ 290 PTR sys_init_module 291 PTR sys_delete_module 292 PTR sys_ni_syscall /* 6170, was get_kernel_syms */ 293 PTR sys_ni_syscall /* was query_module */ 294 PTR sys_quotactl 295 PTR sys_nfsservctl 296 PTR sys_ni_syscall /* res. for getpmsg */ 297 PTR sys_ni_syscall /* 6175 for putpmsg */ 298 PTR sys_ni_syscall /* res. for afs_syscall */ 299 PTR sys_ni_syscall /* res. for security */ 300 PTR sys_gettid 301 PTR sys32_readahead 302 PTR sys_setxattr /* 6180 */ 303 PTR sys_lsetxattr 304 PTR sys_fsetxattr 305 PTR sys_getxattr 306 PTR sys_lgetxattr 307 PTR sys_fgetxattr /* 6185 */ 308 PTR sys_listxattr 309 PTR sys_llistxattr 310 PTR sys_flistxattr 311 PTR sys_removexattr 312 PTR sys_lremovexattr /* 6190 */ 313 PTR sys_fremovexattr 314 PTR sys_tkill 315 PTR sys_ni_syscall 316 PTR compat_sys_futex 317 PTR compat_sys_sched_setaffinity /* 6195 */ 318 PTR compat_sys_sched_getaffinity 319 PTR sys_cacheflush 320 PTR sys_cachectl 321 PTR sys_sysmips 322 PTR sys_io_setup /* 6200 */ 323 PTR sys_io_destroy 324 PTR sys_io_getevents 325 PTR sys_io_submit 326 PTR sys_io_cancel 327 PTR sys_exit_group /* 6205 */ 328 PTR sys_lookup_dcookie 329 PTR sys_epoll_create 330 PTR sys_epoll_ctl 331 PTR sys_epoll_wait 332 PTR sys_remap_file_pages /* 6210 */ 333 PTR sysn32_rt_sigreturn 334 PTR compat_sys_fcntl64 335 PTR sys_set_tid_address 336 PTR sys_restart_syscall 337 PTR sys_semtimedop /* 6215 */ 338 PTR sys_fadvise64_64 339 PTR compat_sys_statfs64 340 PTR compat_sys_fstatfs64 341 PTR sys_sendfile64 342 PTR sys32_timer_create /* 6220 */ 343 PTR compat_sys_timer_settime 344 PTR compat_sys_timer_gettime 345 PTR sys_timer_getoverrun 346 PTR sys_timer_delete 347 PTR compat_sys_clock_settime /* 6225 */ 348 PTR compat_sys_clock_gettime 349 PTR compat_sys_clock_getres 350 PTR compat_sys_clock_nanosleep 351 PTR sys_tgkill 352 PTR compat_sys_utimes /* 6230 */ 353 PTR sys_ni_syscall /* sys_mbind */ 354 PTR sys_ni_syscall /* sys_get_mempolicy */ 355 PTR sys_ni_syscall /* sys_set_mempolicy */ 356 PTR compat_sys_mq_open 357 PTR sys_mq_unlink /* 6235 */ 358 PTR compat_sys_mq_timedsend 359 PTR compat_sys_mq_timedreceive 360 PTR compat_sys_mq_notify 361 PTR compat_sys_mq_getsetattr 362 PTR sys_ni_syscall /* 6240, sys_vserver */ 363 PTR sysn32_waitid 364 PTR sys_ni_syscall /* available, was setaltroot */ 365 PTR sys_add_key 366 PTR sys_request_key 367 PTR sys_keyctl /* 6245 */ 368 PTR sys_set_thread_area 369 PTR sys_inotify_init 370 PTR sys_inotify_add_watch 371 PTR sys_inotify_rm_watch 372