arch/m68k/kernel/entry.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/config.h>
  37 #include <linux/linkage.h>
  38 #include <asm/entry.h>
  39 #include <asm/errno.h>
  40 #include <asm/setup.h>
  41 #include <asm/segment.h>
  42 #include <asm/traps.h>
  43 #include <asm/unistd.h>
  44
  45 #include <asm/offsets.h>
  46
  47 .globl system_call, buserr, trap
  48 .globl resume, ret_from_exception
  49 .globl ret_from_signal
  50 .globl inthandler, sys_call_table
  51 .globl sys_fork, sys_clone, sys_vfork
  52 .globl ret_from_interrupt, bad_interrupt
  53
  54 .text
  55 ENTRY(buserr)
  56         SAVE_ALL_INT
  57         GET_CURRENT(%d0)
  58         movel   %sp,%sp@-               | stack frame pointer argument
  59         bsrl    buserr_c
  60         addql   #4,%sp
  61         jra     ret_from_exception
  62
  63 ENTRY(trap)
  64         SAVE_ALL_INT
  65         GET_CURRENT(%d0)
  66         movel   %sp,%sp@-               | stack frame pointer argument
  67         bsrl    trap_c
  68         addql   #4,%sp
  69         jra     ret_from_exception
  70
  71         | After a fork we jump here directly from resume,
  72         | so that %d1 contains the previous task
  73         | schedule_tail now used regardless of CONFIG_SMP
  74 ENTRY(ret_from_fork)
  75         movel   %d1,%sp@-
  76         jsr     schedule_tail
  77         addql   #4,%sp
  78         jra     ret_from_exception
  79
  80 badsys:
  81         movel   #-ENOSYS,%sp@(PT_D0)
  82         jra     ret_from_exception
  83
  84 do_trace:
  85         movel   #-ENOSYS,%sp@(PT_D0)    | needed for strace
  86         subql   #4,%sp
  87         SAVE_SWITCH_STACK
  88         jbsr    syscall_trace
  89         RESTORE_SWITCH_STACK
  90         addql   #4,%sp
  91         movel   %sp@(PT_ORIG_D0),%d1
  92         movel   #-ENOSYS,%d0
  93         cmpl    #NR_syscalls,%d1
  94         jcc     1f
  95         jbsr    @(sys_call_table,%d1:l:4)@(0)
  96 1:      movel   %d0,%sp@(PT_D0)         | save the return value
  97         subql   #4,%sp                  | dummy return address
  98         SAVE_SWITCH_STACK
  99         jbsr    syscall_trace
 100
 101 ret_from_signal:
 102         RESTORE_SWITCH_STACK
 103         addql   #4,%sp
 104 /* on 68040 complete pending writebacks if any */
 105 #ifdef CONFIG_M68040
 106         bfextu  %sp@(PT_VECTOR){#0,#4},%d0
 107         subql   #7,%d0                          | bus error frame ?
 108         jbne    1f
 109         movel   %sp,%sp@-
 110         jbsr    berr_040cleanup
 111         addql   #4,%sp
 112 1:
 113 #endif
 114         jra     ret_from_exception
 115
 116 ENTRY(system_call)
 117         SAVE_ALL_SYS
 118
 119         GET_CURRENT(%d1)
 120         | save top of frame
 121         movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
 122
 123         tstb    %curptr@(TASK_SYSCALL_TRACE)
 124         jne     do_trace
 125         cmpl    #NR_syscalls,%d0
 126         jcc     badsys
 127         jbsr    @(sys_call_table,%d0:l:4)@(0)
 128         movel   %d0,%sp@(PT_D0)         | save the return value
 129
 130         |oriw   #0x0700,%sr
 131         movel   %curptr@(TASK_WORK),%d0
 132         jne     syscall_exit_work
 133 1:      RESTORE_ALL
 134
 135 syscall_exit_work:
 136         btst    #5,%sp@(PT_SR)          | check if returning to kernel
 137         bnes    1b                      | if so, skip resched, signals
 138         tstw    %d0
 139         jeq     do_signal_return
 140         tstb    %d0
 141         jne     do_delayed_trace
 142
 143         pea     resume_userspace
 144         jmp     schedule
 145
 146 ret_from_exception:
 147         btst    #5,%sp@(PT_SR)          | check if returning to kernel
 148         bnes    1f                      | if so, skip resched, signals
 149         | only allow interrupts when we are really the last one on the
 150         | kernel stack, otherwise stack overflow can occur during
 151         | heavy interrupt load
 152         andw    #ALLOWINT,%sr
 153
 154 resume_userspace:
 155         movel   %curptr@(TASK_WORK),%d0
 156         lsrl    #8,%d0
 157         jne     exit_work
 158 1:      RESTORE_ALL
 159
 160 exit_work:
 161         | save top of frame
 162         movel   %sp,%curptr@(TASK_THREAD+THREAD_ESP0)
 163         tstb    %d0
 164         jeq     do_signal_return
 165
 166         pea     resume_userspace
 167         jmp     schedule
 168
 169 do_signal_return:
 170         |andw   #ALLOWINT,%sr
 171         subql   #4,%sp                  | dummy return address
 172         SAVE_SWITCH_STACK
 173         pea     %sp@(SWITCH_STACK_SIZE)
 174         clrl    %sp@-
 175         bsrl    do_signal
 176         addql   #8,%sp
 177         RESTORE_SWITCH_STACK
 178         addql   #4,%sp
 179         jbra    resume_userspace
 180
 181 do_delayed_trace:
 182         bclr    #7,%sp@(PT_SR)          | clear trace bit in SR
 183         pea     1                       | send SIGTRAP
 184         movel   %curptr,%sp@-
 185         pea     LSIGTRAP
 186         jbsr    send_sig
 187         addql   #8,%sp
 188         addql   #4,%sp
 189         jbra    resume_userspace
 190
 191
 192 #if 0
 193 #ifdef CONFIG_AMIGA
 194 ami_inthandler:
 195         addql   #1,irq_stat+CPUSTAT_LOCAL_IRQ_COUNT
 196         SAVE_ALL_INT
 197         GET_CURRENT(%d0)
 198
 199         bfextu  %sp@(PT_VECTOR){#4,#12},%d0
 200         movel   %d0,%a0
 201         addql   #1,%a0@(kstat+STAT_IRQ-VECOFF(VEC_SPUR))
 202         movel   %a0@(autoirq_list-VECOFF(VEC_SPUR)),%a0
 203
 204 | amiga vector int handler get the req mask instead of irq vector
 205         lea     CUSTOMBASE,%a1
 206         movew   %a1@(C_INTREQR),%d0
 207         andw    %a1@(C_INTENAR),%d0
 208
 209 | prepare stack (push frame pointer, dev_id & req mask)
 210         pea     %sp@
 211         movel   %a0@(IRQ_DEVID),%sp@-
 212         movel   %d0,%sp@-
 213         pea     %pc@(ret_from_interrupt:w)
 214         jbra    @(IRQ_HANDLER,%a0)@(0)
 215
 216 ENTRY(nmi_handler)
 217         rte
 218 #endif
 219 #endif
 220
 221 /*
 222 ** This is the main interrupt handler, responsible for calling process_int()
 223 */
 224 inthandler:
 225         SAVE_ALL_INT
 226         GET_CURRENT(%d0)
 227         addqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+2)
 228                                         |  put exception # in d0
 229         bfextu %sp@(PT_VECTOR){#4,#10},%d0
 230
 231         movel   %sp,%sp@-
 232         movel   %d0,%sp@-               |  put vector # on stack
 233 #if defined(MACH_Q40_ONLY) && defined(CONFIG_BLK_DEV_FD)
 234         btstb   #4,0xff000000           | Q40 floppy needs very special treatment ...
 235         jbeq    1f
 236         btstb   #3,0xff000004
 237         jbeq    1f
 238         jbsr    floppy_hardint
 239         jbra    3f
 240 1:
 241 #endif
 242         jbsr    process_int             |  process the IRQ
 243 3:      addql   #8,%sp                  |  pop parameters off stack
 244
 245 ret_from_interrupt:
 246         subqb   #1,%curptr@(TASK_INFO+TINFO_PREEMPT+2)
 247         jeq     1f
 248 2:
 249         RESTORE_ALL
 250 1:
 251         moveq   #(~ALLOWINT>>8)&0xff,%d0
 252         andb    %sp@(PT_SR),%d0
 253         jne     2b
 254
 255         /* check if we need to do software interrupts */
 256         tstl    irq_stat+CPUSTAT_SOFTIRQ_PENDING
 257         jeq     ret_from_exception
 258         pea     ret_from_exception
 259         jra     do_softirq
 260
 261
 262 /* Handler for uninitialized and spurious interrupts */
 263
 264 bad_interrupt:
 265         addql   #1,num_spurious
 266         rte
 267
 268 ENTRY(sys_fork)
 269         SAVE_SWITCH_STACK
 270         pea     %sp@(SWITCH_STACK_SIZE)
 271         jbsr    m68k_fork
 272         addql   #4,%sp
 273         RESTORE_SWITCH_STACK
 274         rts
 275
 276 ENTRY(sys_clone)
 277         SAVE_SWITCH_STACK
 278         pea     %sp@(SWITCH_STACK_SIZE)
 279         jbsr    m68k_clone
 280         addql   #4,%sp
 281         RESTORE_SWITCH_STACK
 282         rts
 283
 284 ENTRY(sys_vfork)
 285         SAVE_SWITCH_STACK
 286         pea     %sp@(SWITCH_STACK_SIZE)
 287         jbsr    m68k_vfork
 288         addql   #4,%sp
 289         RESTORE_SWITCH_STACK
 290         rts
 291
 292 ENTRY(sys_sigsuspend)
 293         SAVE_SWITCH_STACK
 294         pea     %sp@(SWITCH_STACK_SIZE)
 295         jbsr    do_sigsuspend
 296         addql   #4,%sp
 297         RESTORE_SWITCH_STACK
 298         rts
 299
 300 ENTRY(sys_rt_sigsuspend)
 301         SAVE_SWITCH_STACK
 302         pea     %sp@(SWITCH_STACK_SIZE)
 303         jbsr    do_rt_sigsuspend
 304         addql   #4,%sp
 305         RESTORE_SWITCH_STACK
 306         rts
 307
 308 ENTRY(sys_sigreturn)
 309         SAVE_SWITCH_STACK
 310         jbsr    do_sigreturn
 311         RESTORE_SWITCH_STACK
 312         rts
 313
 314 ENTRY(sys_rt_sigreturn)
 315         SAVE_SWITCH_STACK
 316         jbsr    do_rt_sigreturn
 317         RESTORE_SWITCH_STACK
 318         rts
 319
 320 resume:
 321         /*
 322          * Beware - when entering resume, prev (the current task) is
 323          * in a0, next (the new task) is in a1,so don't change these
 324          * registers until their contents are no longer needed.
 325          */
 326
 327         /* save sr */
 328         movew   %sr,%a0@(TASK_THREAD+THREAD_SR)
 329
 330         /* save fs (sfc,%dfc) (may be pointing to kernel memory) */
 331         movec   %sfc,%d0
 332         movew   %d0,%a0@(TASK_THREAD+THREAD_FS)
 333
 334         /* save usp */
 335         /* it is better to use a movel here instead of a movew 8*) */
 336         movec   %usp,%d0
 337         movel   %d0,%a0@(TASK_THREAD+THREAD_USP)
 338
 339         /* save non-scratch registers on stack */
 340         SAVE_SWITCH_STACK
 341
 342         /* save current kernel stack pointer */
 343         movel   %sp,%a0@(TASK_THREAD+THREAD_KSP)
 344
 345         /* save floating point context */
 346 #ifndef CONFIG_M68KFPU_EMU_ONLY
 347 #ifdef CONFIG_M68KFPU_EMU
 348         tstl    m68k_fputype
 349         jeq     3f
 350 #endif
 351         fsave   %a0@(TASK_THREAD+THREAD_FPSTATE)
 352
 353 #if defined(CONFIG_M68060)
 354 #if !defined(CPU_M68060_ONLY)
 355         btst    #3,m68k_cputype+3
 356         beqs    1f
 357 #endif
 358         /* The 060 FPU keeps status in bits 15-8 of the first longword */
 359         tstb    %a0@(TASK_THREAD+THREAD_FPSTATE+2)
 360         jeq     3f
 361 #if !defined(CPU_M68060_ONLY)
 362         jra     2f
 363 #endif
 364 #endif /* CONFIG_M68060 */
 365 #if !defined(CPU_M68060_ONLY)
 366 1:      tstb    %a0@(TASK_THREAD+THREAD_FPSTATE)
 367         jeq     3f
 368 #endif
 369 2:      fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG)
 370         fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL)
 371 3:
 372 #endif  /* CONFIG_M68KFPU_EMU_ONLY */
 373         /* Return previous task in %d1 */
 374         movel   %curptr,%d1
 375
 376         /* switch to new task (a1 contains new task) */
 377         movel   %a1,%curptr
 378
 379         /* restore floating point context */
 380 #ifndef CONFIG_M68KFPU_EMU_ONLY
 381 #ifdef CONFIG_M68KFPU_EMU
 382         tstl    m68k_fputype
 383         jeq     4f
 384 #endif
 385 #if defined(CONFIG_M68060)
 386 #if !defined(CPU_M68060_ONLY)
 387         btst    #3,m68k_cputype+3
 388         beqs    1f
 389 #endif
 390         /* The 060 FPU keeps status in bits 15-8 of the first longword */
 391         tstb    %a1@(TASK_THREAD+THREAD_FPSTATE+2)
 392         jeq     3f
 393 #if !defined(CPU_M68060_ONLY)
 394         jra     2f
 395 #endif
 396 #endif /* CONFIG_M68060 */
 397 #if !defined(CPU_M68060_ONLY)
 398 1:      tstb    %a1@(TASK_THREAD+THREAD_FPSTATE)
 399         jeq     3f
 400 #endif
 401 2:      fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7
 402         fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar
 403 3:      frestore %a1@(TASK_THREAD+THREAD_FPSTATE)
 404 4:
 405 #endif  /* CONFIG_M68KFPU_EMU_ONLY */
 406
 407         /* restore the kernel stack pointer */
 408         movel   %a1@(TASK_THREAD+THREAD_KSP),%sp
 409
 410         /* restore non-scratch registers */
 411         RESTORE_SWITCH_STACK
 412
 413         /* restore user stack pointer */
 414         movel   %a1@(TASK_THREAD+THREAD_USP),%a0
 415         movel   %a0,%usp
 416
 417         /* restore fs (sfc,%dfc) */
 418         movew   %a1@(TASK_THREAD+THREAD_FS),%a0
 419         movec   %a0,%sfc
 420         movec   %a0,%dfc
 421
 422         /* restore status register */
 423         movew   %a1@(TASK_THREAD+THREAD_SR),%sr
 424
 425         rts
 426
 427 .data
 428 ALIGN
 429 sys_call_table:
 430         .long sys_ni_syscall    /* 0  -  old "setup()" system call*/
 431         .long sys_exit
 432         .long sys_fork
 433         .long sys_read
 434         .long sys_write
 435         .long sys_open          /* 5 */
 436         .long sys_close
 437         .long sys_waitpid
 438         .long sys_creat
 439         .long sys_link
 440         .long sys_unlink        /* 10 */
 441         .long sys_execve
 442         .long sys_chdir
 443         .long sys_time
 444         .long sys_mknod
 445         .long sys_chmod         /* 15 */
 446         .long sys_chown16
 447         .long sys_ni_syscall                            /* old break syscall holder */
 448         .long sys_stat
 449         .long sys_lseek
 450         .long sys_getpid        /* 20 */
 451         .long sys_mount
 452         .long sys_oldumount
 453         .long sys_setuid16
 454         .long sys_getuid16
 455         .long sys_stime         /* 25 */
 456         .long sys_ptrace
 457         .long sys_alarm
 458         .long sys_fstat
 459         .long sys_pause
 460         .long sys_utime         /* 30 */
 461         .long sys_ni_syscall                            /* old stty syscall holder */
 462         .long sys_ni_syscall                            /* old gtty syscall holder */
 463         .long sys_access
 464         .long sys_nice
 465         .long sys_ni_syscall    /* 35 */        /* old ftime syscall holder */
 466         .long sys_sync
 467         .long sys_kill
 468         .long sys_rename
 469         .long sys_mkdir
 470         .long sys_rmdir         /* 40 */
 471         .long sys_dup
 472         .long sys_pipe
 473         .long sys_times
 474         .long sys_ni_syscall                            /* old prof syscall holder */
 475         .long sys_brk           /* 45 */
 476         .long sys_setgid16
 477         .long sys_getgid16
 478         .long sys_signal
 479         .long sys_geteuid16
 480         .long sys_getegid16     /* 50 */
 481         .long sys_acct
 482         .long sys_umount                                /* recycled never used phys() */
 483         .long sys_ni_syscall                            /* old lock syscall holder */
 484         .long sys_ioctl
 485         .long sys_fcntl         /* 55 */
 486         .long sys_ni_syscall                            /* old mpx syscall holder */
 487         .long sys_setpgid
 488         .long sys_ni_syscall                            /* old ulimit syscall holder */
 489         .long sys_ni_syscall
 490         .long sys_umask         /* 60 */
 491         .long sys_chroot
 492         .long sys_ustat
 493         .long sys_dup2
 494         .long sys_getppid
 495         .long sys_getpgrp       /* 65 */
 496         .long sys_setsid
 497         .long sys_sigaction
 498         .long sys_sgetmask
 499         .long sys_ssetmask
 500         .long sys_setreuid16    /* 70 */
 501         .long sys_setregid16
 502         .long sys_sigsuspend
 503         .long sys_sigpending
 504         .long sys_sethostname
 505         .long sys_setrlimit     /* 75 */
 506         .long sys_old_getrlimit
 507         .long sys_getrusage
 508         .long sys_gettimeofday
 509         .long sys_settimeofday
 510         .long sys_getgroups16   /* 80 */
 511         .long sys_setgroups16
 512         .long old_select
 513         .long sys_symlink
 514         .long sys_lstat
 515         .long sys_readlink      /* 85 */
 516         .long sys_uselib
 517         .long sys_swapon
 518         .long sys_reboot
 519         .long old_readdir
 520         .long old_mmap          /* 90 */
 521         .long sys_munmap
 522         .long sys_truncate
 523         .long sys_ftruncate
 524         .long sys_fchmod
 525         .long sys_fchown16      /* 95 */
 526         .long sys_getpriority
 527         .long sys_setpriority
 528         .long sys_ni_syscall                            /* old profil syscall holder */
 529         .long sys_statfs
 530         .long sys_fstatfs       /* 100 */
 531         .long sys_ni_syscall                            /* ioperm for i386 */
 532         .long sys_socketcall
 533         .long sys_syslog
 534         .long sys_setitimer
 535         .long sys_getitimer     /* 105 */
 536         .long sys_newstat
 537         .long sys_newlstat
 538         .long sys_newfstat
 539         .long sys_ni_syscall
 540         .long sys_ni_syscall    /* 110 */       /* iopl for i386 */
 541         .long sys_vhangup
 542         .long sys_ni_syscall                            /* obsolete idle() syscall */
 543         .long sys_ni_syscall                            /* vm86old for i386 */
 544         .long sys_wait4
 545         .long sys_swapoff       /* 115 */
 546         .long sys_sysinfo
 547         .long sys_ipc
 548         .long sys_fsync
 549         .long sys_sigreturn
 550         .long sys_clone         /* 120 */
 551         .long sys_setdomainname
 552         .long sys_newuname
 553         .long sys_cacheflush                            /* modify_ldt for i386 */
 554         .long sys_adjtimex
 555         .long sys_mprotect      /* 125 */
 556         .long sys_sigprocmask
 557         .long sys_ni_syscall            /* old "create_module" */
 558         .long sys_init_module
 559         .long sys_delete_module
 560         .long sys_ni_syscall    /* 130 - old "get_kernel_syms" */
 561         .long sys_quotactl
 562         .long sys_getpgid
 563         .long sys_fchdir
 564         .long sys_bdflush
 565         .long sys_sysfs         /* 135 */
 566         .long sys_personality
 567         .long sys_ni_syscall                            /* for afs_syscall */
 568         .long sys_setfsuid16
 569         .long sys_setfsgid16
 570         .long sys_llseek        /* 140 */
 571         .long sys_getdents
 572         .long sys_select
 573         .long sys_flock
 574         .long sys_msync
 575         .long sys_readv         /* 145 */
 576         .long sys_writev
 577         .long sys_getsid
 578         .long sys_fdatasync
 579         .long sys_sysctl
 580         .long sys_mlock         /* 150 */
 581         .long sys_munlock
 582         .long sys_mlockall
 583         .long sys_munlockall
 584         .long sys_sched_setparam
 585         .long sys_sched_getparam        /* 155 */
 586         .long sys_sched_setscheduler
 587         .long sys_sched_getscheduler
 588         .long sys_sched_yield
 589         .long sys_sched_get_priority_max
 590         .long sys_sched_get_priority_min  /* 160 */
 591         .long sys_sched_rr_get_interval
 592         .long sys_nanosleep
 593         .long sys_mremap
 594         .long sys_setresuid16
 595         .long sys_getresuid16   /* 165 */
 596         .long sys_getpagesize
 597         .long sys_ni_syscall            /* old sys_query_module */
 598         .long sys_poll
 599         .long sys_nfsservctl
 600         .long sys_setresgid16   /* 170 */
 601         .long sys_getresgid16
 602         .long sys_prctl
 603         .long sys_rt_sigreturn
 604         .long sys_rt_sigaction
 605         .long sys_rt_sigprocmask        /* 175 */
 606         .long sys_rt_sigpending
 607         .long sys_rt_sigtimedwait
 608         .long sys_rt_sigqueueinfo
 609         .long sys_rt_sigsuspend
 610         .long sys_pread64       /* 180 */
 611         .long sys_pwrite64
 612         .long sys_lchown16;
 613         .long sys_getcwd
 614         .long sys_capget
 615         .long sys_capset        /* 185 */
 616         .long sys_sigaltstack
 617         .long sys_sendfile
 618         .long sys_ni_syscall                            /* streams1 */
 619         .long sys_ni_syscall                            /* streams2 */
 620         .long sys_vfork         /* 190 */
 621         .long sys_getrlimit
 622         .long sys_mmap2
 623         .long sys_truncate64
 624         .long sys_ftruncate64
 625         .long sys_stat64        /* 195 */
 626         .long sys_lstat64
 627         .long sys_fstat64
 628         .long sys_chown
 629         .long sys_getuid
 630         .long sys_getgid        /* 200 */
 631         .long sys_geteuid
 632         .long sys_getegid
 633         .long sys_setreuid
 634         .long sys_setregid
 635         .long sys_getgroups     /* 205 */
 636         .long sys_setgroups
 637         .long sys_fchown
 638         .long sys_setresuid
 639         .long sys_getresuid
 640         .long sys_setresgid     /* 210 */
 641         .long sys_getresgid
 642         .long sys_lchown
 643         .long sys_setuid
 644         .long sys_setgid
 645         .long sys_setfsuid      /* 215 */
 646         .long sys_setfsgid
 647         .long sys_pivot_root
 648         .long sys_ni_syscall
 649         .long sys_ni_syscall
 650         .long sys_getdents64    /* 220 */
 651         .long sys_gettid
 652         .long sys_tkill
 653         .long sys_setxattr
 654         .long sys_lsetxattr
 655         .long sys_fsetxattr     /* 225 */
 656         .long sys_getxattr
 657         .long sys_lgetxattr
 658         .long sys_fgetxattr
 659         .long sys_listxattr
 660         .long sys_llistxattr    /* 230 */
 661         .long sys_flistxattr
 662         .long sys_removexattr
 663         .long sys_lremovexattr
 664         .long sys_fremovexattr
 665         .long sys_futex         /* 235 */
 666         .long sys_sendfile64
 667         .long sys_mincore
 668         .long sys_madvise
 669         .long sys_fcntl64
 670         .long sys_readahead     /* 240 */
 671         .long sys_io_setup
 672         .long sys_io_destroy
 673         .long sys_io_getevents
 674         .long sys_io_submit
 675         .long sys_io_cancel     /* 245 */
 676         .long sys_fadvise64
 677         .long sys_exit_group
 678         .long sys_lookup_dcookie
 679         .long sys_epoll_create
 680         .long sys_epoll_ctl     /* 250 */
 681         .long sys_epoll_wait
 682         .long sys_remap_file_pages
 683         .long sys_set_tid_address
 684         .long sys_timer_create
 685         .long sys_timer_settime /* 255 */
 686         .long sys_timer_gettime
 687         .long sys_timer_getoverrun
 688         .long sys_timer_delete
 689         .long sys_clock_settime
 690         .long sys_clock_gettime /* 260 */
 691         .long sys_clock_getres
 692         .long sys_clock_nanosleep
 693         .long sys_statfs64
 694         .long sys_fstatfs64
 695         .long sys_tgkill        /* 265 */
 696         .long sys_utimes
 697         .long sys_fadvise64_64
 698         .long sys_mbind
 699         .long sys_get_mempolicy
 700         .long sys_set_mempolicy /* 270 */
 701         .long sys_mq_open
 702         .long sys_mq_unlink
 703         .long sys_mq_timedsend
 704         .long sys_mq_timedreceive
 705         .long sys_mq_notify     /* 275 */
 706         .long sys_mq_getsetattr
 707         .long sys_waitid
 708         .long sys_ni_syscall    /* for sys_vserver */
 709         .long sys_add_key
 710         .long sys_request_key   /* 280 */
 711         .long sys_keyctl
 712