arch/m68k/kernel/entry_mm.S

   1 /* -*- mode: asm -*-
   2  *
   3  *  linux/arch/m68k/kernel/entry.S
   4  *
   5  *  Copyright (C) 1991, 1992  Linus Torvalds
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file README.legal in the main directory of this archive
   9  * for more details.
  10  *
  11  * Linux/m68k support by Hamish Macdonald
  12  *
  13  * 68060 fixes by Jesper Skov
  14  *
  15  */
  16
  17 /*
  18  * entry.S  contains the system-call and fault low-level handling routines.
  19  * This also contains the timer-interrupt handler, as well as all interrupts
  20  * and faults that can result in a task-switch.
  21  *
  22  * NOTE: This code handles signal-recognition, which happens every time
  23  * after a timer-interrupt and after each system call.
  24  *
  25  */
  26
  27 /*
  28  * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so
  29  *               all pointers that used to be 'current' are now entry
  30  *               number 0 in the 'current_set' list.
  31  *
  32  *  6/05/00 RZ:  addedd writeback completion after return from sighandler
  33  *               for 68040
  34  */
  35
  36 #include <linux/linkage.h>
  37 #include <asm/entry.h>
  38 #include <asm/errno.h>
  39 #include <asm/setup.h>
  40 #include <asm/segment.h>
  41 #include <asm/traps.h>
  42 #include <asm/unistd.h>
  43
  44 #include <asm/asm-offsets.h>
  45
  46 .globl system_call, buserr, trap, resume
  47 .globl sys_call_table
  48 .globl sys_fork, sys_clone, sys_vfork
  49 .globl ret_from_interrupt, bad_interrupt
  50 .globl auto_irqhandler_fixup
  51 .globl user_irqvec_fixup, user_irqhandler_fixup
  52
  53 .text
  54 ENTRY(buserr)
  55         SAVE_ALL_INT
  56         GET_CURRENT(%d0)
  57         movel   %sp,%sp@-               | stack frame pointer argument
  58         bsrl    buserr_c
  59         addql   #4,%sp
  60         jra     .Lret_from_exception
  61
  62 ENTRY(trap)
  63         SAVE_ALL_INT
  64         GET_CURRENT(%d0)
  65         movel   %sp,%sp@-               | stack frame pointer argument
  66         bsrl    trap_c
  67         addql   #4,%sp
  68         jra     .Lret_from_exception
  69
  70         | After a fork we jump here directly from resume,
  71         | so that %d1 contains the previous task
  72         | schedule_tail now used regardless of CONFIG_SMP
  73 ENTRY(ret_from_fork)
  74         movel   %d1,%sp@-
  75         jsr     schedule_tail
  76         addql   #4,%sp
  77         jra     .Lret_from_exception
  78
  79 do_trace_entry:
  80         movel   #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace
  81         subql   #4,%sp
  82         SAVE_SWITCH_STACK
  83         jbsr    syscall_trace
  84         RESTORE_SWITCH_STACK
  85         addql   #4,%sp
  86         movel   %sp@(PT_OFF_ORIG_D0),%d0
  87         cmpl    #NR_syscalls,%d0
  88         jcs     syscall
  89 badsys:
  90         movel   #-ENOSYS,%sp@(PT_OFF_D0)
  91         jra     ret_from_syscall
  92
  93 do_trace_exit:
  94         subql   #4,%sp
  95         SAVE_SWITCH_STACK
  96         jbsr    syscall_trace
  97         RESTORE_SWITCH_STACK
  98         addql   #4,%sp
  99         jra     .Lret_from_exception
 100
 101 ENTRY(ret_from_signal)
 102         tstb    %curptr@(TASK_INFO+TINFO_FLAGS+2)
 103         jge     1f
 104         jbsr    syscall_trace
 105 1:      RESTORE_SWITCH_STACK
 106         addql   #4,%sp
 107 /* on 68040 complete pending writebacks if any */
 108 #ifdef CONFIG_M68040
 109         bfextu  %sp@(PT_OFF_FORMATVEC){#0,#4},%d0
 110         subql   #7,%d0                          | bus error frame ?
 111         jbne    1f
 112         movel   %sp,%sp@-
 113         jbsr    berr_040cleanup
 114         addql   #4,%sp
 115 1:
 116 #endif
 117         jra     .Lret_from_exception
 118
 119 ENTRY(system_call)
 120         SAVE_ALL_SYS
 121
 122         GET_CURRENT(%d1)
 123         | save top of frame
 124         movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
 125
 126         | syscall trace?
 127         tstb    %curptr@(TASK_INFO+TINFO_FLAGS+2)
 128         jmi     do_trace_entry
 129         cmpl    #NR_syscalls,%d0
 130         jcc     badsys
 131 syscall:
 132         jbsr    @(sys_call_table,%d0:l:4)@(0)
 133         movel   %d0,%sp@(PT_OFF_D0)     | save the return value
 134 ret_from_syscall:
 135         |oriw   #0x0700,%sr
 136         movew   %curptr@(TASK_INFO+TINFO_FLAGS+2),%d0
 137         jne     syscall_exit_work
 138 1:      RESTORE_ALL
 139
 140 syscall_exit_work:
 141         btst    #5,%sp@(PT_OFF_SR)      | check if returning to kernel
 142         bnes    1b                      | if so, skip resched, signals
 143         lslw    #1,%d0
 144         jcs     do_trace_exit
 145         jmi     do_delayed_trace
 146         lslw    #8,%d0
 147         jmi     do_signal_return
 148         pea     resume_userspace
 149         jra     schedule
 150
 151
 152 ENTRY(ret_from_exception)
 153 .Lret_from_exception:
 154         btst    #5,%sp@(PT_OFF_SR)      | check if returning to kernel
 155         bnes    1f                      | if so, skip resched, signals
 156         | only allow interrupts when we are really the last one on the
 157         | kernel stack, otherwise stack overflow can occur during
 158         | heavy interrupt load
 159         andw    #ALLOWINT,%sr
 160
 161 resume_userspace:
 162         moveb   %curptr@(TASK_INFO+TINFO_FLAGS+3),%d0
 163         jne     exit_work
 164 1:      RESTORE_ALL
 165
 166 exit_work:
 167         | save top of frame
 168         movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
 169         lslb    #1,%d0
 170         jmi     do_signal_return
 171         pea     resume_userspace
 172         jra     schedule
 173
 174
 175 do_signal_return:
 176         |andw   #ALLOWINT,%sr
 177         subql   #4,%sp                  | dummy return address
 178         SAVE_SWITCH_STACK
 179         pea     %sp@(SWITCH_STACK_SIZE)
 180         bsrl    do_signal
 181         addql   #4,%sp
 182         RESTORE_SWITCH_STACK
 183         addql   #4,%sp
 184         jbra    resume_userspace
 185
 186 do_delayed_trace:
 187         bclr    #7,%sp@(PT_OFF_SR)      | clear trace bit in SR
 188         pea     1                       | send SIGTRAP
 189         movel   %curptr,%sp@-
 190         pea     LSIGTRAP
 191         jbsr    send_sig
 192         addql   #8,%sp
 193         addql   #4,%sp
 194         jbra    resume_userspace
 195
 196
 197 /* This is the main interrupt handler for autovector interrupts */
 198
 199 ENTRY(auto_inthandler)
 200         SAVE_ALL_INT
 201         GET_CURRENT(%d0)
 202         addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
 203                                         |  put exception # in d0
 204         bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
 205         subw    #VEC_SPUR,%d0
 206
 207         movel   %sp,%sp@-
 208         movel   %d0,%sp@-               |  put vector # on stack
 209 auto_irqhandler_fixup = . + 2
 210         jsr     __m68k_handle_int       |  process the IRQ
 211         addql   #8,%sp                  |  pop parameters off stack
 212
 213 ret_from_interrupt:
 214         subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
 215         jeq     ret_from_last_interrupt
 216 2:      RESTORE_ALL
 217
 218         ALIGN
 219 ret_from_last_interrupt:
 220         moveq   #(~ALLOWINT>>8)&0xff,%d0
 221         andb    %sp@(PT_OFF_SR),%d0
 222         jne     2b
 223
 224         /* check if we need to do software interrupts */
 225         tstl    irq_stat+CPUSTAT_SOFTIRQ_PENDING
 226         jeq     .Lret_from_exception
 227         pea     ret_from_exception
 228         jra     do_softirq
 229
 230 /* Handler for user defined interrupt vectors */
 231
 232 ENTRY(user_inthandler)
 233         SAVE_ALL_INT
 234         GET_CURRENT(%d0)
 235         addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
 236                                         |  put exception # in d0
 237         bfextu  %sp@(PT_OFF_FORMATVEC){#4,#10},%d0
 238 user_irqvec_fixup = . + 2
 239         subw    #VEC_USER,%d0
 240
 241         movel   %sp,%sp@-
 242         movel   %d0,%sp@-               |  put vector # on stack
 243 user_irqhandler_fixup = . + 2
 244         jsr     __m68k_handle_int       |  process the IRQ
 245         addql   #8,%sp                  |  pop parameters off stack
 246
 247         subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
 248         jeq     ret_from_last_interrupt
 249         RESTORE_ALL
 250
 251 /* Handler for uninitialized and spurious interrupts */
 252
 253 ENTRY(bad_inthandler)
 254         SAVE_ALL_INT
 255         GET_CURRENT(%d0)
 256         addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
 257
 258         movel   %sp,%sp@-
 259         jsr     handle_badint
 260         addql   #4,%sp
 261
 262         subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
 263         jeq     ret_from_last_interrupt
 264         RESTORE_ALL
 265
 266
 267 ENTRY(sys_fork)
 268         SAVE_SWITCH_STACK
 269         pea     %sp@(SWITCH_STACK_SIZE)
 270         jbsr    m68k_fork
 271         addql   #4,%sp
 272         RESTORE_SWITCH_STACK
 273         rts
 274
 275 ENTRY(sys_clone)
 276         SAVE_SWITCH_STACK
 277         pea     %sp@(SWITCH_STACK_SIZE)
 278         jbsr    m68k_clone
 279         addql   #4,%sp
 280         RESTORE_SWITCH_STACK
 281         rts
 282
 283 ENTRY(sys_vfork)
 284         SAVE_SWITCH_STACK
 285         pea     %sp@(SWITCH_STACK_SIZE)
 286         jbsr    m68k_vfork
 287         addql   #4,%sp
 288         RESTORE_SWITCH_STACK
 289         rts
 290
 291 ENTRY(sys_sigreturn)
 292         SAVE_SWITCH_STACK
 293         jbsr    do_sigreturn
 294         RESTORE_SWITCH_STACK
 295         rts
 296
 297 ENTRY(sys_rt_sigreturn)
 298         SAVE_SWITCH_STACK
 299         jbsr    do_rt_sigreturn
 300         RESTORE_SWITCH_STACK
 301         rts
 302
 303 resume:
 304         /*
 305          * Beware - when entering resume, prev (the current task) is
 306          * in a0, next (the new task) is in a1,so don't change these
 307          * registers until their contents are no longer needed.
 308          */
 309
 310         /* save sr */
 311         movew   %sr,%a0@(TASK_THREAD+THREAD_SR)
 312
 313         /* save fs (sfc,%dfc) (may be pointing to kernel memory) */
 314         movec   %sfc,%d0
 315         movew   %d0,%a0@(TASK_THREAD+THREAD_FS)
 316
 317         /* save usp */
 318         /* it is better to use a movel here instead of a movew 8*) */
 319         movec   %usp,%d0
 320         movel   %d0,%a0@(TASK_THREAD+THREAD_USP)
 321
 322         /* save non-scratch registers on stack */
 323         SAVE_SWITCH_STACK
 324
 325         /* save current kernel stack pointer */
 326         movel   %sp,%a0@(TASK_THREAD+THREAD_KSP)
 327
 328         /* save floating point context */
 329 #ifndef CONFIG_M68KFPU_EMU_ONLY
 330 #ifdef CONFIG_M68KFPU_EMU
 331         tstl    m68k_fputype
 332         jeq     3f
 333 #endif
 334         fsave   %a0@(TASK_THREAD+THREAD_FPSTATE)
 335
 336 #if defined(CONFIG_M68060)
 337 #if !defined(CPU_M68060_ONLY)
 338         btst    #3,m68k_cputype+3
 339         beqs    1f
 340 #endif
 341         /* The 060 FPU keeps status in bits 15-8 of the first longword */
 342         tstb    %a0@(TASK_THREAD+THREAD_FPSTATE+2)
 343         jeq     3f
 344 #if !defined(CPU_M68060_ONLY)
 345         jra     2f
 346 #endif
 347 #endif /* CONFIG_M68060 */
 348 #if !defined(CPU_M68060_ONLY)
 349 1:      tstb    %a0@(TASK_THREAD+THREAD_FPSTATE)
 350         jeq     3f
 351 #endif
 352 2:      fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG)
 353         fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL)
 354 3:
 355 #endif  /* CONFIG_M68KFPU_EMU_ONLY */
 356         /* Return previous task in %d1 */
 357         movel   %curptr,%d1
 358
 359         /* switch to new task (a1 contains new task) */
 360         movel   %a1,%curptr
 361
 362         /* restore floating point context */
 363 #ifndef CONFIG_M68KFPU_EMU_ONLY
 364 #ifdef CONFIG_M68KFPU_EMU
 365         tstl    m68k_fputype
 366         jeq     4f
 367 #endif
 368 #if defined(CONFIG_M68060)
 369 #if !defined(CPU_M68060_ONLY)
 370         btst    #3,m68k_cputype+3
 371         beqs    1f
 372 #endif
 373         /* The 060 FPU keeps status in bits 15-8 of the first longword */
 374         tstb    %a1@(TASK_THREAD+THREAD_FPSTATE+2)
 375         jeq     3f
 376 #if !defined(CPU_M68060_ONLY)
 377         jra     2f
 378 #endif
 379 #endif /* CONFIG_M68060 */
 380 #if !defined(CPU_M68060_ONLY)
 381 1:      tstb    %a1@(TASK_THREAD+THREAD_FPSTATE)
 382         jeq     3f
 383 #endif
 384 2:      fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7
 385         fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar
 386 3:      frestore %a1@(TASK_THREAD+THREAD_FPSTATE)
 387 4:
 388 #endif  /* CONFIG_M68KFPU_EMU_ONLY */
 389
 390         /* restore the kernel stack pointer */
 391         movel   %a1@(TASK_THREAD+THREAD_KSP),%sp
 392
 393         /* restore non-scratch registers */
 394         RESTORE_SWITCH_STACK
 395
 396         /* restore user stack pointer */
 397         movel   %a1@(TASK_THREAD+THREAD_USP),%a0
 398         movel   %a0,%usp
 399
 400         /* restore fs (sfc,%dfc) */
 401         movew   %a1@(TASK_THREAD+THREAD_FS),%a0
 402         movec   %a0,%sfc
 403         movec   %a0,%dfc
 404
 405         /* restore status register */
 406         movew   %a1@(TASK_THREAD+THREAD_SR),%sr
 407
 408         rts
 409
 410 .data
 411 ALIGN
 412 sys_call_table:
 413         .long sys_restart_syscall       /* 0 - old "setup()" system call, used for restarting */
 414         .long sys_exit
 415         .long sys_fork
 416         .long sys_read
 417         .long sys_write
 418         .long sys_open          /* 5 */
 419         .long sys_close
 420         .long sys_waitpid
 421         .long sys_creat
 422         .long sys_link
 423         .long sys_unlink        /* 10 */
 424         .long sys_execve
 425         .long sys_chdir
 426         .long sys_time
 427         .long sys_mknod
 428         .long sys_chmod         /* 15 */
 429         .long sys_chown16
 430         .long sys_ni_syscall                            /* old break syscall holder */
 431         .long sys_stat
 432         .long sys_lseek
 433         .long sys_getpid        /* 20 */
 434         .long sys_mount
 435         .long sys_oldumount
 436         .long sys_setuid16
 437         .long sys_getuid16
 438         .long sys_stime         /* 25 */
 439         .long sys_ptrace
 440         .long sys_alarm
 441         .long sys_fstat
 442         .long sys_pause
 443         .long sys_utime         /* 30 */
 444         .long sys_ni_syscall                            /* old stty syscall holder */
 445         .long sys_ni_syscall                            /* old gtty syscall holder */
 446         .long sys_access
 447         .long sys_nice
 448         .long sys_ni_syscall    /* 35 */        /* old ftime syscall holder */
 449         .long sys_sync
 450         .long sys_kill
 451         .long sys_rename
 452         .long sys_mkdir
 453         .long sys_rmdir         /* 40 */
 454         .long sys_dup
 455         .long sys_pipe
 456         .long sys_times
 457         .long sys_ni_syscall                            /* old prof syscall holder */
 458         .long sys_brk           /* 45 */
 459         .long sys_setgid16
 460         .long sys_getgid16
 461         .long sys_signal
 462         .long sys_geteuid16
 463         .long sys_getegid16     /* 50 */
 464         .long sys_acct
 465         .long sys_umount                                /* recycled never used phys() */
 466         .long sys_ni_syscall                            /* old lock syscall holder */
 467         .long sys_ioctl
 468         .long sys_fcntl         /* 55 */
 469         .long sys_ni_syscall                            /* old mpx syscall holder */
 470         .long sys_setpgid
 471         .long sys_ni_syscall                            /* old ulimit syscall holder */
 472         .long sys_ni_syscall
 473         .long sys_umask         /* 60 */
 474         .long sys_chroot
 475         .long sys_ustat
 476         .long sys_dup2
 477         .long sys_getppid
 478         .long sys_getpgrp       /* 65 */
 479         .long sys_setsid
 480         .long sys_sigaction
 481         .long sys_sgetmask
 482         .long sys_ssetmask
 483         .long sys_setreuid16    /* 70 */
 484         .long sys_setregid16
 485         .long sys_sigsuspend
 486         .long sys_sigpending
 487         .long sys_sethostname
 488         .long sys_setrlimit     /* 75 */
 489         .long sys_old_getrlimit
 490         .long sys_getrusage
 491         .long sys_gettimeofday
 492         .long sys_settimeofday
 493         .long sys_getgroups16   /* 80 */
 494         .long sys_setgroups16
 495         .long sys_old_select
 496         .long sys_symlink
 497         .long sys_lstat
 498         .long sys_readlink      /* 85 */
 499         .long sys_uselib
 500         .long sys_swapon
 501         .long sys_reboot
 502         .long sys_old_readdir
 503         .long sys_old_mmap      /* 90 */
 504         .long sys_munmap
 505         .long sys_truncate
 506         .long sys_ftruncate
 507         .long sys_fchmod
 508         .long sys_fchown16      /* 95 */
 509         .long sys_getpriority
 510         .long sys_setpriority
 511         .long sys_ni_syscall                            /* old profil syscall holder */
 512         .long sys_statfs
 513         .long sys_fstatfs       /* 100 */
 514         .long sys_ni_syscall                            /* ioperm for i386 */
 515         .long sys_socketcall
 516         .long sys_syslog
 517         .long sys_setitimer
 518         .long sys_getitimer     /* 105 */
 519         .long sys_newstat
 520         .long sys_newlstat
 521         .long sys_newfstat
 522         .long sys_ni_syscall
 523         .long sys_ni_syscall    /* 110 */       /* iopl for i386 */
 524         .long sys_vhangup
 525         .long sys_ni_syscall                            /* obsolete idle() syscall */
 526         .long sys_ni_syscall                            /* vm86old for i386 */
 527         .long sys_wait4
 528         .long sys_swapoff       /* 115 */
 529         .long sys_sysinfo
 530         .long sys_ipc
 531         .long sys_fsync
 532         .long sys_sigreturn
 533         .long sys_clone         /* 120 */
 534         .long sys_setdomainname
 535         .long sys_newuname
 536         .long sys_cacheflush                            /* modify_ldt for i386 */
 537         .long sys_adjtimex
 538         .long sys_mprotect      /* 125 */
 539         .long sys_sigprocmask
 540         .long sys_ni_syscall            /* old "create_module" */
 541         .long sys_init_module
 542         .long sys_delete_module
 543         .long sys_ni_syscall    /* 130 - old "get_kernel_syms" */
 544         .long sys_quotactl
 545         .long sys_getpgid
 546         .long sys_fchdir
 547         .long sys_bdflush
 548         .long sys_sysfs         /* 135 */
 549         .long sys_personality
 550         .long sys_ni_syscall                            /* for afs_syscall */
 551         .long sys_setfsuid16
 552         .long sys_setfsgid16
 553         .long sys_llseek        /* 140 */
 554         .long sys_getdents
 555         .long sys_select
 556         .long sys_flock
 557         .long sys_msync
 558         .long sys_readv         /* 145 */
 559         .long sys_writev
 560         .long sys_getsid
 561         .long sys_fdatasync
 562         .long sys_sysctl
 563         .long sys_mlock         /* 150 */
 564         .long sys_munlock
 565         .long sys_mlockall
 566         .long sys_munlockall
 567         .long sys_sched_setparam
 568         .long sys_sched_getparam        /* 155 */
 569         .long sys_sched_setscheduler
 570         .long sys_sched_getscheduler
 571         .long sys_sched_yield
 572         .long sys_sched_get_priority_max
 573         .long sys_sched_get_priority_min  /* 160 */
 574         .long sys_sched_rr_get_interval
 575         .long sys_nanosleep
 576         .long sys_mremap
 577         .long sys_setresuid16
 578         .long sys_getresuid16   /* 165 */
 579         .long sys_getpagesize
 580         .long sys_ni_syscall            /* old sys_query_module */
 581         .long sys_poll
 582         .long sys_nfsservctl
 583         .long sys_setresgid16   /* 170 */
 584         .long sys_getresgid16
 585         .long sys_prctl
 586         .long sys_rt_sigreturn
 587         .long sys_rt_sigaction
 588         .long sys_rt_sigprocmask        /* 175 */
 589         .long sys_rt_sigpending
 590         .long sys_rt_sigtimedwait
 591         .long sys_rt_sigqueueinfo
 592         .long sys_rt_sigsuspend
 593         .long sys_pread64       /* 180 */
 594         .long sys_pwrite64
 595         .long sys_lchown16;
 596         .long sys_getcwd
 597         .long sys_capget
 598         .long sys_capset        /* 185 */
 599         .long sys_sigaltstack
 600         .long sys_sendfile
 601         .long sys_ni_syscall                            /* streams1 */
 602         .long sys_ni_syscall                            /* streams2 */
 603         .long sys_vfork         /* 190 */
 604         .long sys_getrlimit
 605         .long sys_mmap2
 606         .long sys_truncate64
 607         .long sys_ftruncate64
 608         .long sys_stat64        /* 195 */
 609         .long sys_lstat64
 610         .long sys_fstat64
 611         .long sys_chown
 612         .long sys_getuid
 613         .long sys_getgid        /* 200 */
 614         .long sys_geteuid
 615         .long sys_getegid
 616         .long sys_setreuid
 617         .long sys_setregid
 618         .long sys_getgroups     /* 205 */
 619         .long sys_setgroups
 620         .long sys_fchown
 621         .long sys_setresuid
 622         .long sys_getresuid
 623         .long sys_setresgid     /* 210 */
 624         .long sys_getresgid
 625         .long sys_lchown
 626         .long sys_setuid
 627         .long sys_setgid
 628         .long sys_setfsuid      /* 215 */
 629         .long sys_setfsgid
 630         .long sys_pivot_root
 631         .long sys_ni_syscall
 632         .long sys_ni_syscall
 633         .long sys_getdents64    /* 220 */
 634         .long sys_gettid
 635         .long sys_tkill
 636         .long sys_setxattr
 637         .long sys_lsetxattr
 638         .long sys_fsetxattr     /* 225 */
 639         .long sys_getxattr
 640         .long sys_lgetxattr
 641         .long sys_fgetxattr
 642         .long sys_listxattr
 643         .long sys_llistxattr    /* 230 */
 644         .long sys_flistxattr
 645         .long sys_removexattr
 646         .long sys_lremovexattr
 647         .long sys_fremovexattr
 648         .long sys_futex         /* 235 */
 649         .long sys_sendfile64
 650         .long sys_mincore
 651         .long sys_madvise
 652         .long sys_fcntl64
 653         .long sys_readahead     /* 240 */
 654         .long sys_io_setup
 655         .long sys_io_destroy
 656         .long sys_io_getevents
 657         .long sys_io_submit
 658         .long sys_io_cancel     /* 245 */
 659         .long sys_fadvise64
 660         .long sys_exit_group
 661         .long sys_lookup_dcookie
 662         .long sys_epoll_create
 663         .long sys_epoll_ctl     /* 250 */
 664         .long sys_epoll_wait
 665         .long sys_remap_file_pages
 666         .long sys_set_tid_address
 667         .long sys_timer_create
 668         .long sys_timer_settime /* 255 */
 669         .long sys_timer_gettime
 670         .long sys_timer_getoverrun
 671         .long sys_timer_delete
 672         .long sys_clock_settime
 673         .long sys_clock_gettime /* 260 */
 674         .long sys_clock_getres
 675         .long sys_clock_nanosleep
 676         .long sys_statfs64
 677         .long sys_fstatfs64
 678         .long sys_tgkill        /* 265 */
 679         .long sys_utimes
 680         .long sys_fadvise64_64
 681         .long sys_mbind
 682         .long sys_get_mempolicy
 683         .long sys_set_mempolicy /* 270 */
 684         .long sys_mq_open
 685         .long sys_mq_unlink
 686         .long sys_mq_timedsend
 687         .long sys_mq_timedreceive
 688         .long sys_mq_notify     /* 275 */
 689         .long sys_mq_getsetattr
 690         .long sys_waitid
 691         .long sys_ni_syscall    /* for sys_vserver */
 692         .long sys_add_key
 693         .long sys_request_key   /* 280 */
 694         .long sys_keyctl
 695         .long sys_ioprio_set
 696         .long sys_ioprio_get
 697         .long sys_inotify_init
 698         .long sys_inotify_add_watch     /* 285 */
 699         .long sys_inotify_rm_watch
 700         .long sys_migrate_pages
 701         .long sys_openat
 702         .long sys_mkdirat
 703         .long sys_mknodat               /* 290 */
 704         .long sys_fchownat
 705         .long sys_futimesat
 706         .long sys_fstatat64
 707         .long sys_unlinkat
 708         .long sys_renameat              /* 295 */
 709         .long sys_linkat
 710         .long sys_symlinkat
 711         .long sys_readlinkat
 712         .long sys_fchmodat
 713         .long sys_faccessat             /* 300 */
 714         .long sys_ni_syscall            /* Reserved for pselect6 */
 715         .long sys_ni_syscall            /* Reserved for ppoll */
 716         .long sys_unshare
 717         .long sys_set_robust_list
 718         .long sys_get_robust_list       /* 305 */
 719         .long sys_splice
 720         .long sys_sync_file_range
 721         .long sys_tee
 722         .long sys_vmsplice
 723         .long sys_move_pages            /* 310 */
 724         .long sys_sched_setaffinity
 725         .long sys_sched_getaffinity
 726         .long sys_kexec_load
 727         .long sys_getcpu
 728         .long sys_epoll_pwait           /* 315 */
 729         .long sys_utimensat
 730         .long sys_signalfd
 731         .long sys_timerfd_create
 732         .long sys_eventfd
 733         .long sys_fallocate             /* 320 */
 734         .long sys_timerfd_settime
 735         .long sys_timerfd_gettime
 736         .long sys_signalfd4
 737         .long sys_eventfd2
 738         .long sys_epoll_create1         /* 325 */
 739         .long sys_dup3
 740         .long sys_pipe2
 741         .long sys_inotify_init1
 742         .long sys_preadv
 743         .long sys_pwritev               /* 330 */
 744         .long sys_rt_tgsigqueueinfo
 745         .long sys_perf_event_open
 746         .long sys_get_thread_area
 747         .long sys_set_thread_area
 748         .long sys_atomic_cmpxchg_32     /* 335 */
 749         .long sys_atomic_barrier
 750         .long sys_fanotify_init
 751         .long sys_fanotify_mark
 752         .long sys_prlimit64
 753