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, 02 by Ralf Baechle 7 * Copyright (C) 1999, 2000 Silicon Graphics, Inc. 8 * Copyright (C) 2001 MIPS Technologies, Inc. 9 */ 10#include <linux/errno.h> 11#include <asm/asm.h> 12#include <asm/asmmacro.h> 13#include <asm/irqflags.h> 14#include <asm/mipsregs.h> 15#include <asm/regdef.h> 16#include <asm/stackframe.h> 17#include <asm/asm-offsets.h> 18#include <asm/sysmips.h> 19#include <asm/thread_info.h> 20#include <asm/unistd.h> 21#include <asm/war.h> 22 23#ifndef CONFIG_BINFMT_ELF32 24/* Neither O32 nor N32, so define handle_sys here */ 25#define handle_sys64 handle_sys 26#endif 27 28 .align 5 29NESTED(handle_sys64, PT_SIZE, sp) 30#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) 31 /* 32 * When 32-bit compatibility is configured scall_o32.S 33 * already did this. 34 */ 35 .set noat 36 SAVE_SOME 37 TRACE_IRQS_ON_RELOAD 38 STI 39 .set at 40#endif 41 42 dsubu t0, v0, __NR_64_Linux # check syscall number 43 sltiu t0, t0, __NR_64_Linux_syscalls + 1 44#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) 45 ld t1, PT_EPC(sp) # skip syscall on return 46 daddiu t1, 4 # skip to next instruction 47 sd t1, PT_EPC(sp) 48#endif 49 beqz t0, illegal_syscall 50 51 dsll t0, v0, 3 # offset into table 52 ld t2, (sys_call_table - (__NR_64_Linux * 8))(t0) 53 # syscall routine 54 55 sd a3, PT_R26(sp) # save a3 for syscall restarting 56 57 li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT 58 LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? 59 and t0, t1, t0 60 bnez t0, syscall_trace_entry 61 62 jalr t2 # Do The Real Thing (TM) 63 64 li t0, -EMAXERRNO - 1 # error? 65 sltu t0, t0, v0 66 sd t0, PT_R7(sp) # set error flag 67 beqz t0, 1f 68 69 dnegu v0 # error 70 sd v0, PT_R0(sp) # set flag for syscall 71 # restarting 721: sd v0, PT_R2(sp) # result 73 74n64_syscall_exit: 75 local_irq_disable # make sure need_resched and 76 # signals dont change between 77 # sampling and return 78 LONG_L a2, TI_FLAGS($28) # current->work 79 li t0, _TIF_ALLWORK_MASK 80 and t0, a2, t0 81 bnez t0, n64_syscall_exit_work 82 83 j restore_partial 84 85n64_syscall_exit_work: 86 j syscall_exit_work_partial 87 88/* ------------------------------------------------------------------------ */ 89 90syscall_trace_entry: 91 SAVE_STATIC 92 move s0, t2 93 move a0, sp 94 li a1, 0 95 jal do_syscall_trace 96 97 move t0, s0 98 RESTORE_STATIC 99 ld a0, PT_R4(sp) # Restore argument registers 100 ld a1, PT_R5(sp) 101 ld a2, PT_R6(sp) 102 ld a3, PT_R7(sp) 103 ld a4, PT_R8(sp) 104 ld a5, PT_R9(sp) 105 jalr t0 106 107 li t0, -EMAXERRNO - 1 # error? 108 sltu t0, t0, v0 109 sd t0, PT_R7(sp) # set error flag 110 beqz t0, 1f 111 112 dnegu v0 # error 113 sd v0, PT_R0(sp) # set flag for syscall restarting 1141: sd v0, PT_R2(sp) # result 115 116 j syscall_exit 117 118illegal_syscall: 119 /* This also isn't a 64-bit syscall, throw an error. */ 120 li v0, -ENOSYS # error 121 sd v0, PT_R2(sp) 122 li t0, 1 # set error flag 123 sd t0, PT_R7(sp) 124 j n64_syscall_exit 125 END(handle_sys64) 126 127 LEAF(mips_atomic_set) 128 andi v0, a1, 3 # must be word aligned 129 bnez v0, bad_alignment 130 131 LONG_L v1, TI_ADDR_LIMIT($28) # in legal address range? 132 LONG_ADDIU a0, a1, 4 133 or a0, a0, a1 134 and a0, a0, v1 135 bltz a0, bad_address 136 137#ifdef CONFIG_CPU_HAS_LLSC 138 /* Ok, this is the ll/sc case. World is sane :-) */ 1391: ll v0, (a1) 140 move a0, a2 1412: sc a0, (a1) 142#if R10000_LLSC_WAR 143 beqzl a0, 1b 144#else 145 beqz a0, 1b 146#endif 147 148 .section __ex_table,"a" 149 PTR 1b, bad_stack 150 PTR 2b, bad_stack 151 .previous 152#else 153 sw a1, 16(sp) 154 sw a2, 20(sp) 155 156 move a0, sp 157 move a2, a1 158 li a1, 1 159 jal do_page_fault 160 161 lw a1, 16(sp) 162 lw a2, 20(sp) 163 164 /* 165 * At this point the page should be readable and writable unless 166 * there was no more memory available. 167 */ 1681: lw v0, (a1) 1692: sw a2, (a1) 170 171 .section __ex_table,"a" 172 PTR 1b, no_mem 173 PTR 2b, no_mem 174 .previous 175#endif 176 177 sd zero, PT_R7(sp) # success 178 sd v0, PT_R2(sp) # result 179 180 j n64_syscall_exit # continue like a normal syscall 181 182no_mem: li v0, -ENOMEM 183 jr ra 184 185bad_address: 186 li v0, -EFAULT 187 jr ra 188 189bad_alignment: 190 li v0, -EINVAL 191 jr ra 192 END(mips_atomic_set) 193 194 LEAF(sys_sysmips) 195 beq a0, MIPS_ATOMIC_SET, mips_atomic_set 196 j _sys_sysmips 197 END(sys_sysmips) 198 199 .align 3 200sys_call_table: 201 PTR sys_read /* 5000 */ 202 PTR sys_write 203 PTR sys_open 204 PTR sys_close 205 PTR sys_newstat 206 PTR sys_newfstat /* 5005 */ 207 PTR sys_newlstat 208 PTR sys_poll 209 PTR sys_lseek 210 PTR old_mmap 211 PTR sys_mprotect /* 5010 */ 212 PTR sys_munmap 213 PTR sys_brk 214 PTR sys_rt_sigaction 215 PTR sys_rt_sigprocmask 216 PTR sys_ioctl /* 5015 */ 217 PTR sys_pread64 218 PTR sys_pwrite64 219 PTR sys_readv 220 PTR sys_writev 221 PTR sys_access /* 5020 */ 222 PTR sys_pipe 223 PTR sys_select 224 PTR sys_sched_yield 225 PTR sys_mremap 226 PTR sys_msync /* 5025 */ 227 PTR sys_mincore 228 PTR sys_madvise 229 PTR sys_shmget 230 PTR sys_shmat 231 PTR sys_shmctl /* 5030 */ 232 PTR sys_dup 233 PTR sys_dup2 234 PTR sys_pause 235 PTR sys_nanosleep 236 PTR sys_getitimer /* 5035 */ 237 PTR sys_setitimer 238 PTR sys_alarm 239 PTR sys_getpid 240 PTR sys_sendfile64 241 PTR sys_socket /* 5040 */ 242 PTR sys_connect 243 PTR sys_accept 244 PTR sys_sendto 245 PTR sys_recvfrom 246 PTR sys_sendmsg /* 5045 */ 247 PTR sys_recvmsg 248 PTR sys_shutdown 249 PTR sys_bind 250 PTR sys_listen 251 PTR sys_getsockname /* 5050 */ 252 PTR sys_getpeername 253 PTR sys_socketpair 254 PTR sys_setsockopt 255 PTR sys_getsockopt 256 PTR sys_clone /* 5055 */ 257 PTR sys_fork 258 PTR sys_execve 259 PTR sys_exit 260 PTR sys_wait4 261 PTR sys_kill /* 5060 */ 262 PTR sys_newuname 263 PTR sys_semget 264 PTR sys_semop 265 PTR sys_semctl 266 PTR sys_shmdt /* 5065 */ 267 PTR sys_msgget 268 PTR sys_msgsnd 269 PTR sys_msgrcv 270 PTR sys_msgctl 271 PTR sys_fcntl /* 5070 */ 272 PTR sys_flock 273 PTR sys_fsync 274 PTR sys_fdatasync 275 PTR sys_truncate 276 PTR sys_ftruncate /* 5075 */ 277 PTR sys_getdents 278 PTR sys_getcwd 279 PTR sys_chdir 280 PTR sys_fchdir 281 PTR sys_rename /* 5080 */ 282 PTR sys_mkdir 283 PTR sys_rmdir 284 PTR sys_creat 285 PTR sys_link 286 PTR sys_unlink /* 5085 */ 287 PTR sys_symlink 288 PTR sys_readlink 289 PTR sys_chmod 290 PTR sys_fchmod 291 PTR sys_chown /* 5090 */ 292 PTR sys_fchown 293 PTR sys_lchown 294 PTR sys_umask 295 PTR sys_gettimeofday 296 PTR sys_getrlimit /* 5095 */ 297 PTR sys_getrusage 298 PTR sys_sysinfo 299 PTR sys_times 300 PTR sys_ptrace 301 PTR sys_getuid /* 5100 */ 302 PTR sys_syslog 303 PTR sys_getgid 304 PTR sys_setuid 305 PTR sys_setgid 306 PTR sys_geteuid /* 5105 */ 307 PTR sys_getegid 308 PTR sys_setpgid 309 PTR sys_getppid 310 PTR sys_getpgrp 311 PTR sys_setsid /* 5110 */ 312 PTR sys_setreuid 313 PTR sys_setregid 314 PTR sys_getgroups 315 PTR sys_setgroups 316 PTR sys_setresuid /* 5115 */ 317 PTR sys_getresuid 318 PTR sys_setresgid 319 PTR sys_getresgid 320 PTR sys_getpgid 321 PTR sys_setfsuid /* 5120 */ 322 PTR sys_setfsgid 323 PTR sys_getsid 324 PTR sys_capget 325 PTR sys_capset 326 PTR sys_rt_sigpending /* 5125 */ 327 PTR sys_rt_sigtimedwait 328 PTR sys_rt_sigqueueinfo 329 PTR sys_rt_sigsuspend 330 PTR sys_sigaltstack 331 PTR sys_utime /* 5130 */ 332 PTR sys_mknod 333 PTR sys_personality 334 PTR sys_ustat 335 PTR sys_statfs 336 PTR sys_fstatfs /* 5135 */ 337 PTR sys_sysfs 338 PTR sys_getpriority 339 PTR sys_setpriority 340 PTR sys_sched_setparam 341 PTR sys_sched_getparam /* 5140 */ 342 PTR sys_sched_setscheduler 343 PTR sys_sched_getscheduler 344 PTR sys_sched_get_priority_max 345 PTR sys_sched_get_priority_min 346 PTR sys_sched_rr_get_interval /* 5145 */ 347 PTR sys_mlock 348 PTR sys_munlock 349 PTR sys_mlockall 350 PTR sys_munlockall 351 PTR sys_vhangup /* 5150 */ 352 PTR sys_pivot_root 353 PTR sys_sysctl 354 PTR sys_prctl 355 PTR sys_adjtimex 356 PTR sys_setrlimit /* 5155 */ 357 PTR sys_chroot 358 PTR sys_sync 359 PTR sys_acct 360 PTR sys_settimeofday 361 PTR sys_mount /* 5160 */ 362 PTR sys_umount 363 PTR sys_swapon 364 PTR sys_swapoff 365 PTR sys_reboot 366 PTR sys_sethostname /* 5165 */ 367 PTR sys_setdomainname 368 PTR sys_ni_syscall /* was create_module */ 369 PTR sys_init_module 370 PTR sys_delete_module 371 PTR sys_ni_syscall /* 5170, was get_kernel_syms */ 372 PTR sys_ni_syscall /* was query_module */ 373 PTR sys_quotactl 374 PTR sys_nfsservctl 375 PTR sys_ni_syscall /* res. for getpmsg */ 376 PTR sys_ni_syscall /* 5175 for putpmsg */ 377 PTR sys_ni_syscall /* res. for afs_syscall */ 378 PTR sys_ni_syscall /* res. for security */ 379 PTR sys_gettid 380 PTR sys_readahead 381 PTR sys_setxattr /* 5180 */ 382 PTR sys_lsetxattr 383 PTR sys_fsetxattr 384 PTR sys_getxattr 385 PTR sys_lgetxattr 386 PTR sys_fgetxattr /* 5185 */ 387 PTR sys_listxattr 388 PTR sys_llistxattr 389 PTR sys_flistxattr 390 PTR sys_removexattr 391 PTR sys_lremovexattr /* 5190 */ 392 PTR sys_fremovexattr 393 PTR sys_tkill 394 PTR sys_ni_syscall 395 PTR sys_futex 396 PTR sys_sched_setaffinity /* 5195 */ 397 PTR sys_sched_getaffinity 398 PTR sys_cacheflush 399 PTR sys_cachectl 400 PTR sys_sysmips 401 PTR sys_io_setup /* 5200 */ 402 PTR sys_io_destroy 403 PTR sys_io_getevents 404 PTR sys_io_submit 405 PTR sys_io_cancel 406 PTR sys_exit_group /* 5205 */ 407 PTR sys_lookup_dcookie 408 PTR sys_epoll_create 409 PTR sys_epoll_ctl 410 PTR sys_epoll_wait 411 PTR sys_remap_file_pages /* 5210 */ 412 PTR sys_rt_sigreturn 413 PTR sys_set_tid_address 414 PTR sys_restart_syscall 415 PTR sys_semtimedop 416 PTR sys_fadvise64_64 /* 5215 */ 417 PTR sys_timer_create 418 PTR sys_timer_settime 419 PTR sys_timer_gettime 420 PTR sys_timer_getoverrun 421 PTR sys_timer_delete /* 5220 */ 422 PTR sys_clock_settime 423 PTR sys_clock_gettime 424 PTR sys_clock_getres 425 PTR sys_clock_nanosleep 426 PTR sys_tgkill /* 5225 */ 427 PTR sys_utimes 428 PTR sys_mbind 429 PTR sys_ni_syscall /* sys_get_mempolicy */ 430 PTR sys_ni_syscall /* sys_set_mempolicy */ 431 PTR sys_mq_open /* 5230 */ 432 PTR sys_mq_unlink 433 PTR sys_mq_timedsend 434 PTR sys_mq_timedreceive 435 PTR sys_mq_notify 436 PTR sys_mq_getsetattr /* 5235 */ 437 PTR sys_ni_syscall /* sys_vserver */ 438 PTR sys_waitid 439 PTR sys_ni_syscall /* available, was setaltroot */ 440 PTR sys_add_key 441 PTR sys_request_key /* 5240 */ 442 PTR sys_keyctl 443 PTR sys_set_thread_area 444 PTR sys_inotify_init 445 PTR sys_inotify_add_watch 446 PTR sys_inotify_rm_watch /* 5245 */ 447 PTR sys_migrate_pages 448 PTR sys_openat 449 PTR sys_mkdirat 450 PTR sys_mknodat 451 PTR sys_fchownat /* 5250 */ 452 PTR sys_futimesat 453 PTR sys_newfstatat 454 PTR sys_unlinkat 455 PTR sys_renameat 456 PTR sys_linkat /* 5255 */ 457 PTR sys_symlinkat 458 PTR sys_readlinkat 459 PTR sys_fchmodat 460 PTR sys_faccessat 461 PTR sys_pselect6 /* 5260 */ 462 PTR sys_ppoll 463 PTR sys_unshare 464 PTR sys_splice 465 PTR sys_sync_file_range 466 PTR sys_tee /* 5265 */ 467 PTR sys_vmsplice 468 PTR sys_move_pages 469 PTR sys_set_robust_list 470 PTR sys_get_robust_list 471 PTR sys_kexec_load /* 5270 */ 472 PTR sys_getcpu 473 PTR sys_epoll_pwait 474 PTR sys_ioprio_set 475 PTR sys_ioprio_get 476 PTR sys_utimensat /* 5275 */ 477 PTR sys_signalfd 478 PTR sys_timerfd 479 PTR sys_eventfd 480 .size sys_call_table,.-sys_call_table 481