root/arch/alpha/kernel/entry.S

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   1 /*
   2  * alpha/entry.S
   3  *
   4  * kernel entry-points
   5  */
   6 
   7 #include <asm/system.h>
   8 
   9 #define halt    .long PAL_halt
  10 #define rti     .long PAL_rti
  11 #define SIGCHLD 20
  12 
  13 #define NR_SYSCALLS 320
  14 #define osf_vfork sys_fork
  15 
  16 /*
  17  * These offsets must match with "struct hae" in io.h:  
  18  */
  19 #define HAE_CACHE       0
  20 #define HAE_REG         8
  21 
  22 /*
  23  * stack offsets
  24  */
  25 #define SP_OFF          160
  26 
  27 #define SWITCH_STACK_SIZE 320
  28 
  29 /*
  30  * task structure offsets
  31  */
  32 #define TASK_STATE      0
  33 #define TASK_COUNTER    8
  34 #define TASK_PRIORITY   16
  35 #define TASK_SIGNAL     24
  36 #define TASK_BLOCKED    32
  37 #define TASK_FLAGS      40
  38 
  39 /*
  40  * task flags (must match include/linux/sched.h):
  41  */
  42 #define PF_PTRACED      0x00000010
  43 
  44 /*
  45  * This defines the normal kernel pt-regs layout.
  46  *
  47  * regs 9-15 preserved by C code
  48  * regs 16-18 saved by PAL-code
  49  * regs 29-30 saved and set up by PAL-code
  50  */
  51 #define SAVE_ALL                        \
  52         subq    $30,160,$30;            \
  53         stq     $0,0($30);              \
  54         stq     $1,8($30);              \
  55         stq     $2,16($30);             \
  56         stq     $3,24($30);             \
  57         stq     $4,32($30);             \
  58         stq     $5,40($30);             \
  59         stq     $6,48($30);             \
  60         stq     $7,56($30);             \
  61         stq     $8,64($30);             \
  62         stq     $19,72($30);            \
  63         stq     $20,80($30);            \
  64         stq     $21,88($30);            \
  65         stq     $22,96($30);            \
  66         stq     $23,104($30);           \
  67         stq     $24,112($30);           \
  68         stq     $25,120($30);           \
  69         stq     $26,128($30);           \
  70         stq     $27,136($30);           \
  71         stq     $28,144($30);           \
  72         lda     $2,hae;                 \
  73         ldq     $2,HAE_CACHE($2);       \
  74         stq     $2,152($30)
  75 
  76 #define RESTORE_ALL                     \
  77         lda     $8,hae;                 \
  78         ldq     $7,HAE_CACHE($8);       \
  79         ldq     $6,152($30);            \
  80         subq    $7,$6,$5;               \
  81         beq     $5,99f;                 \
  82         ldq     $7,HAE_REG($8);         \
  83         addq    $31,7,$16;              \
  84         call_pal PAL_swpipl;            \
  85         stq     $6,HAE_CACHE($8);       \
  86         stq     $6,0($7);               \
  87         mb;                             \
  88         bis     $0,$0,$16;              \
  89         call_pal PAL_swpipl;            \
  90 99:;                                    \
  91         ldq     $0,0($30);              \
  92         ldq     $1,8($30);              \
  93         ldq     $2,16($30);             \
  94         ldq     $3,24($30);             \
  95         ldq     $4,32($30);             \
  96         ldq     $5,40($30);             \
  97         ldq     $6,48($30);             \
  98         ldq     $7,56($30);             \
  99         ldq     $8,64($30);             \
 100         ldq     $19,72($30);            \
 101         ldq     $20,80($30);            \
 102         ldq     $21,88($30);            \
 103         ldq     $22,96($30);            \
 104         ldq     $23,104($30);           \
 105         ldq     $24,112($30);           \
 106         ldq     $25,120($30);           \
 107         ldq     $26,128($30);           \
 108         ldq     $27,136($30);           \
 109         ldq     $28,144($30);           \
 110         addq    $30,160,$30
 111 
 112 .text
 113 .set noat
 114 #ifdef __linux__
 115   .set singlegp
 116 #endif
 117 
 118 .align 3
 119 .globl  entInt
 120 .ent    entInt
 121 entInt:
 122         SAVE_ALL
 123 /* start atomic operation with respect to software interrupts */
 124         lda     $0,intr_count
 125         ldq     $1,0($0)
 126         addq    $1,1,$1
 127         stq     $1,0($0)
 128 /* set up the arguments to the C interrupt handler */
 129         lda     $27,do_entInt
 130         jsr     $26,($27),do_entInt
 131 /* ok, check if we need to do software interrupts */
 132 1:      lda     $0,intr_count
 133         ldq     $1,0($0)
 134         subq    $1,1,$1
 135         bne     $1,2f           /* interrupt within interrupt: return now */
 136         lda     $2,bh_active
 137         ldq     $3,0($2)
 138         lda     $2,bh_mask
 139         ldq     $2,0($2)
 140         and     $2,$3,$2
 141         bne     $2,3f
 142         stq     $1,0($0)
 143         br      $31,ret_from_sys_call
 144 .align 3
 145 2:      stq     $1,0($0)
 146         br      $31,restore_all
 147 .align 3
 148 3:      lda     $27,do_bottom_half
 149         jsr     $26,($27),do_bottom_half
 150         br      $31,1b
 151 .end entInt
 152 
 153 .align 3
 154 .globl  entMM
 155 .ent    entMM
 156 entMM:
 157         SAVE_ALL
 158         lda     $27,do_page_fault
 159         lda     $26,ret_from_sys_call
 160         jsr     $31,($27),do_page_fault
 161 .end entMM
 162 
 163 .align 3
 164 .globl  entArith
 165 .ent    entArith
 166 entArith:
 167         SAVE_ALL
 168         lda     $27,do_entArith
 169         lda     $26,ret_from_sys_call
 170         jsr     $31,($27),do_entArith
 171 .end entArith
 172 
 173 .align 3
 174 .globl  entIF
 175 .ent    entIF
 176 entIF:
 177         SAVE_ALL
 178         lda     $27,do_entIF
 179         lda     $26,ret_from_sys_call
 180         jsr     $31,($27),do_entIF
 181 .end entIF
 182 
 183 /*
 184  * Fork() is one of the special system calls: it needs to
 185  * save the callee-saved regs so that the regs can be found
 186  * for the new process.. We save them in the "context switch"
 187  * stack format (see arch/alpha/kernel/process.c).
 188  *
 189  * Also, for the kernel fork, we need to fake the system call
 190  * stack buildup, as we can't do system calls from kernel space.
 191  */
 192 .align 3
 193 .ent    kernel_clone
 194 kernel_clone:
 195         subq $30,6*8,$30
 196         stq $31,0($30)
 197         stq $26,8($30)
 198         stq $29,16($30)
 199         stq $16,24($30)
 200         stq $17,32($30)
 201         stq $18,40($30)
 202         bis $31,2,$0    /* Register v0: syscall nr for fork() */
 203         SAVE_ALL
 204         lda $27,sys_clone
 205         jsr $26,($27),sys_clone
 206         stq $0,0($30)   
 207         br ret_from_sys_call
 208 .end    kernel_clone
 209 
 210 /*
 211  * __kernel_thread(clone_flags, fn, arg)
 212  */
 213 .align 3
 214 .globl  __kernel_thread
 215 .ent    __kernel_thread
 216 __kernel_thread:
 217         subq $30,4*8,$30
 218         stq $9,0($30)
 219         stq $10,8($30)
 220         stq $26,16($30)
 221         bis $17,$17,$9          /* save fn */
 222         bis $18,$18,$10         /* save arg */
 223         bsr $26,kernel_clone
 224         bne $20,1f              /* $20 is non-zero in child */
 225         ldq $9,0($30)
 226         ldq $10,8($30)
 227         ldq $26,16($30)
 228         addq $30,4*8,$30
 229         ret $31,($26),1
 230 /* this is in child: look out as we don't have any stack here.. */
 231 1:      bis $9,$9,$27           /* get fn */
 232         bis $10,$10,$16         /* get arg */
 233         jsr $26,($27)
 234         bis $0,$0,$16
 235         lda $27,sys_exit
 236         jsr $26,($27),sys_exit
 237         call_pal PAL_halt
 238 .end    __kernel_thread
 239 
 240 .align 3
 241 .ent    do_switch_stack
 242 do_switch_stack:
 243         lda $30,-SWITCH_STACK_SIZE($30)
 244         stq  $9,0($30)
 245         stq $10,8($30)
 246         stq $11,16($30)
 247         stq $12,24($30)
 248         stq $13,32($30)
 249         stq $14,40($30)
 250         stq $15,48($30)
 251         stq $26,56($30)
 252         stt $f0,64($30)
 253         stt $f1,72($30)
 254         stt $f2,80($30)
 255         stt $f3,88($30)
 256         stt $f4,96($30)
 257         stt $f5,104($30)
 258         stt $f6,112($30)
 259         stt $f7,120($30)
 260         stt $f8,128($30)
 261         stt $f9,136($30)
 262         stt $f10,144($30)
 263         stt $f11,152($30)
 264         stt $f12,160($30)
 265         stt $f13,168($30)
 266         stt $f14,176($30)
 267         stt $f15,184($30)
 268         stt $f16,192($30)
 269         stt $f17,200($30)
 270         stt $f18,208($30)
 271         stt $f19,216($30)
 272         stt $f20,224($30)
 273         stt $f21,232($30)
 274         stt $f22,240($30)
 275         stt $f23,248($30)
 276         stt $f24,256($30)
 277         stt $f25,264($30)
 278         stt $f26,272($30)
 279         stt $f27,280($30)
 280         stt $f28,288($30)
 281         stt $f29,296($30)
 282         stt $f30,304($30)
 283         ret $31,($1),1
 284 .end do_switch_stack
 285 
 286 .align 3
 287 .ent    undo_switch_stack
 288 undo_switch_stack:
 289         ldq  $9,0($30)
 290         ldq $10,8($30)
 291         ldq $11,16($30)
 292         ldq $12,24($30)
 293         ldq $13,32($30)
 294         ldq $14,40($30)
 295         ldq $15,48($30)
 296         ldq $26,56($30)
 297         ldt $f0,64($30)
 298         ldt $f1,72($30)
 299         ldt $f2,80($30)
 300         ldt $f3,88($30)
 301         ldt $f4,96($30)
 302         ldt $f5,104($30)
 303         ldt $f6,112($30)
 304         ldt $f7,120($30)
 305         ldt $f8,128($30)
 306         ldt $f9,136($30)
 307         ldt $f10,144($30)
 308         ldt $f11,152($30)
 309         ldt $f12,160($30)
 310         ldt $f13,168($30)
 311         ldt $f14,176($30)
 312         ldt $f15,184($30)
 313         ldt $f16,192($30)
 314         ldt $f17,200($30)
 315         ldt $f18,208($30)
 316         ldt $f19,216($30)
 317         ldt $f20,224($30)
 318         ldt $f21,232($30)
 319         ldt $f22,240($30)
 320         ldt $f23,248($30)
 321         ldt $f24,256($30)
 322         ldt $f25,264($30)
 323         ldt $f26,272($30)
 324         ldt $f27,280($30)
 325         ldt $f28,288($30)
 326         ldt $f29,296($30)
 327         ldt $f30,304($30)
 328         lda $30,SWITCH_STACK_SIZE($30)
 329         ret $31,($1),1
 330 .end undo_switch_stack
 331 
 332 .align 3
 333 .globl  entUna
 334 .ent    entUna
 335 entUna:
 336         lda $30,-256($30)
 337         stq $0,0($30)
 338         ldq $0,256($30)         /* get PS */
 339         stq $1,8($30)
 340         stq $2,16($30)
 341         stq $3,24($30)
 342         and $0,8,$0             /* user mode? */
 343         stq $4,32($30)
 344         bne $0,entUnaUser       /* yup -> do user-level unaligned fault */
 345         stq $5,40($30)
 346         stq $6,48($30)
 347         stq $7,56($30)
 348         stq $8,64($30)
 349         stq $9,72($30)
 350         stq $10,80($30)
 351         stq $11,88($30)
 352         stq $12,96($30)
 353         stq $13,104($30)
 354         stq $14,112($30)
 355         stq $15,120($30)
 356         /* 16-18 PAL-saved */
 357         stq $19,152($30)
 358         stq $20,160($30)
 359         stq $21,168($30)
 360         stq $22,176($30)
 361         stq $23,184($30)
 362         stq $24,192($30)
 363         stq $25,200($30)
 364         stq $26,208($30)
 365         stq $27,216($30)
 366         stq $28,224($30)
 367         stq $29,232($30)
 368         stq $30,240($30)
 369         stq $31,248($30)
 370         lda $27,do_entUna
 371         jsr $26,($27),do_entUna
 372         ldq $0,0($30)
 373         ldq $1,8($30)
 374         ldq $2,16($30)
 375         ldq $3,24($30)
 376         ldq $4,32($30)
 377         ldq $5,40($30)
 378         ldq $6,48($30)
 379         ldq $7,56($30)
 380         ldq $8,64($30)
 381         ldq $9,72($30)
 382         ldq $10,80($30)
 383         ldq $11,88($30)
 384         ldq $12,96($30)
 385         ldq $13,104($30)
 386         ldq $14,112($30)
 387         ldq $15,120($30)
 388         /* 16-18 PAL-saved */
 389         ldq $19,152($30)
 390         ldq $20,160($30)
 391         ldq $21,168($30)
 392         ldq $22,176($30)
 393         ldq $23,184($30)
 394         ldq $24,192($30)
 395         ldq $25,200($30)
 396         ldq $26,208($30)
 397         ldq $27,216($30)
 398         ldq $28,224($30)
 399         ldq $29,232($30)
 400         ldq $30,240($30)
 401         lda $30,256($30)
 402         rti
 403 .end entUna
 404 
 405 .align 3
 406 .ent    entUnaUser
 407 entUnaUser:
 408         ldq $0,0($30)                   /* restore original $0 */
 409         lda $30,256($30)                /* pop entUna's stack frame */
 410         SAVE_ALL                        /* setup normal kernel stack */
 411         lda $30,-56($30)
 412         stq $9,0($30)
 413         stq $10,8($30)
 414         stq $11,16($30)
 415         stq $12,24($30)
 416         stq $13,32($30)
 417         stq $14,40($30)
 418         stq $15,48($30)
 419         lda $27,do_entUnaUser
 420         bis $31,$30,$19
 421         jsr $26,($27),do_entUnaUser
 422         ldq $9,0($30)
 423         ldq $10,8($30)
 424         ldq $11,16($30)
 425         ldq $12,24($30)
 426         ldq $13,32($30)
 427         ldq $14,40($30)
 428         ldq $15,48($30)
 429         lda $30,56($30)
 430         br $31,ret_from_sys_call
 431 
 432 .end    entUnaUser
 433 
 434 /*
 435  * A fork is the same as clone(SIGCHLD, 0);
 436 */
 437 .align 3
 438 .globl  sys_fork
 439 .ent    sys_fork
 440 sys_fork:
 441         br $1,do_switch_stack
 442         bis $31,SIGCHLD,$16
 443         bis $31,$31,$17
 444         bis $30,$30,$18
 445         lda $27,alpha_clone
 446         jsr $26,($27),alpha_clone
 447         br $1,undo_switch_stack
 448         ret $31,($26),1
 449 .end    sys_fork
 450 
 451 .align 3
 452 .globl  sys_clone
 453 .ent    sys_clone
 454 sys_clone:
 455         br $1,do_switch_stack
 456         /* arg1 and arg2 come from the user */
 457         bis $30,$30,$18
 458         lda $27,alpha_clone
 459         jsr $26,($27),alpha_clone
 460         br $1,undo_switch_stack
 461         ret $31,($26),1
 462 .end    sys_clone
 463 
 464 .align 3
 465 .globl  alpha_switch_to
 466 .ent    alpha_switch_to
 467 alpha_switch_to:
 468         br $1,do_switch_stack
 469         call_pal PAL_swpctx
 470         br $1,undo_switch_stack
 471         ret $31,($26),1
 472 .end alpha_switch_to
 473 
 474 /*
 475  * Oh, well.. Disassembling OSF/1 binaries to find out how the
 476  * system calls work isn't much fun.
 477  *
 478  * entSys is special in that the PAL-code doesn't save a0-a2, so
 479  * we start off by doing that by hand.
 480  */
 481 .align 3
 482 .globl  entSys
 483 .globl  ret_from_sys_call
 484 .ent    entSys
 485 entSys:
 486         stq     $16,24($30)
 487         stq     $17,32($30)
 488         stq     $18,40($30)
 489         SAVE_ALL
 490         lda     $1,NR_SYSCALLS($31)
 491         lda     $2,sys_call_table
 492         lda     $27,do_entSys
 493         cmpult  $0,$1,$1
 494         s8addq  $0,$2,$2
 495         beq     $1,1f
 496         ldq     $27,0($2)
 497 1:      jsr     $26,($27),do_entSys
 498         blt     $0,syscall_error        /* the call failed */
 499         stq     $0,0($30)
 500         stq     $31,72($30)             /* a3=0 => no error */
 501 .align 3
 502 ret_from_sys_call:
 503         ldq     $0,SP_OFF($30)
 504         cmovne  $26,0,$19               /* $19 = 0 => non-restartable */
 505         and     $0,8,$0
 506         beq     $0,restore_all
 507 ret_from_reschedule:
 508         lda     $0,need_resched
 509         lda     $1,current_set
 510         ldl     $2,0($0)
 511         lda     $4,init_task
 512         ldq     $3,0($1)
 513         bne     $2,reschedule
 514         subq    $4,$3,$4
 515         beq     $4,restore_all
 516         ldq     $4,TASK_SIGNAL($3)
 517         ldq     $16,TASK_BLOCKED($3)
 518         bic     $4,$16,$4
 519         bne     $4,signal_return
 520 restore_all:
 521         RESTORE_ALL
 522         rti
 523 
 524         .align 3
 525 syscall_error:
 526         /*
 527          * Some system calls (e.g., ptrace) can return arbitrary
 528          * values which might normally be mistaken as error numbers.
 529          * Those functions must zero $0 (v0) directly in the stack
 530          * frame to indicate that a negative return value wasn't an
 531          * error number..
 532          */
 533         ldq     $19,0($30)      /* old syscall nr (zero if success) */
 534         beq     $19,ret_success
 535 
 536         ldq     $20,72($30)     /* .. and this a3 */
 537         subq    $31,$0,$0       /* with error in v0 */
 538         addq    $31,1,$1        /* set a3 for errno return */
 539         bis     $31,$31,$26     /* tell "ret_from_sys_call" that we can restart */
 540         stq     $1,72($30)      /* a3 for return */
 541 ret_success:
 542         stq     $0,0($30)
 543         br      $31,ret_from_sys_call
 544 
 545 .align 3
 546 signal_return:
 547         bis     $30,$30,$17
 548         br      $1,do_switch_stack
 549         bis     $30,$30,$18
 550         lda     $27,do_signal
 551         jsr     $26,($27),do_signal
 552         lda     $30,SWITCH_STACK_SIZE($30)
 553         br      $31,restore_all
 554 .end entSys
 555 
 556 .align 3
 557 .ent reschedule
 558 reschedule:
 559         subq    $30,16,$30
 560         stq     $19,0($30)      /* save syscall nr */
 561         stq     $20,8($30)      /* and error indication (a3) */
 562         lda     $27,schedule
 563         jsr     $26,($27),schedule
 564         ldq     $19,0($30)
 565         ldq     $20,8($30)
 566         addq    $30,16,$30
 567         br      $31,ret_from_reschedule
 568 .end reschedule
 569 
 570 .align 3
 571 .ent sys_sigreturn
 572 sys_sigreturn:
 573         bis     $30,$30,$17
 574         lda     $30,-SWITCH_STACK_SIZE($30)
 575         bis     $30,$30,$18
 576         lda     $27,do_sigreturn
 577         jsr     $26,($27),do_sigreturn
 578         br      $1,undo_switch_stack
 579         br      $31,ret_from_sys_call
 580 .end sys_sigreturn
 581 
 582 .align 3
 583 .ent sys_sigsuspend
 584 sys_sigsuspend:
 585         bis     $30,$30,$17
 586         br      $1,do_switch_stack
 587         bis     $30,$30,$18
 588         lda     $27,do_sigsuspend
 589         jsr     $26,($27),do_sigsuspend
 590         lda     $30,SWITCH_STACK_SIZE($30)
 591         br      $31,ret_from_sys_call
 592 .end sys_sigsuspend
 593 
 594         .align 3
 595         .globl sys_call_table
 596 sys_call_table:
 597 /*0*/   .quad do_entSys, sys_exit, sys_fork, sys_read, sys_write
 598         .quad do_entSys, sys_close, sys_wait4, do_entSys, sys_link
 599         .quad sys_unlink, do_entSys, sys_chdir, sys_fchdir, sys_mknod
 600         .quad sys_chmod, sys_chown, sys_brk, do_entSys, sys_lseek
 601         .quad sys_getxpid, osf_mount, osf_umount, sys_setuid, sys_getxuid
 602         .quad do_entSys, sys_ptrace, do_entSys, do_entSys, do_entSys
 603         .quad do_entSys, do_entSys, do_entSys, sys_access, do_entSys
 604         .quad do_entSys, sys_sync, sys_kill, do_entSys, sys_setpgid
 605         .quad do_entSys, sys_dup, sys_pipe, do_entSys, do_entSys
 606         .quad sys_open, do_entSys, sys_getxgid, osf_sigprocmask, do_entSys
 607 /*50*/  .quad do_entSys, sys_acct, do_entSys, do_entSys, sys_ioctl
 608         .quad do_entSys, do_entSys, sys_symlink, sys_readlink, sys_execve
 609         .quad sys_umask, sys_chroot, do_entSys, sys_getpgrp, sys_getpagesize
 610         .quad do_entSys, osf_vfork, sys_newstat, sys_newlstat, do_entSys
 611         .quad do_entSys, osf_mmap, do_entSys, sys_munmap, sys_mprotect
 612         .quad sys_madvise, sys_vhangup, do_entSys, do_entSys, sys_getgroups
 613         /* map BSD's setpgrp to sys_setpgid for binary compatibility: */
 614         .quad sys_setgroups, do_entSys, sys_setpgid, sys_setitimer, do_entSys
 615         .quad do_entSys, sys_getitimer, sys_gethostname, sys_sethostname, sys_getdtablesize
 616         .quad sys_dup2, sys_newfstat, sys_fcntl, sys_select, do_entSys
 617         .quad sys_fsync, sys_setpriority, sys_socket, sys_connect, sys_accept
 618 /*100*/ .quad sys_getpriority, sys_send, sys_recv, sys_sigreturn, sys_bind
 619         .quad sys_setsockopt, sys_listen, do_entSys, do_entSys, do_entSys
 620         .quad do_entSys, sys_sigsuspend, do_entSys, do_entSys, do_entSys
 621         .quad do_entSys, sys_gettimeofday, sys_getrusage, sys_getsockopt, do_entSys
 622         .quad sys_readv, sys_writev, sys_settimeofday, sys_fchown, sys_fchmod
 623         .quad sys_recvfrom, sys_setreuid, sys_setregid, sys_rename, sys_truncate
 624         .quad sys_ftruncate, do_entSys, sys_setgid, sys_sendto, sys_shutdown
 625         .quad sys_socketpair, sys_mkdir, sys_rmdir, sys_utimes, do_entSys
 626         .quad do_entSys, sys_getpeername, do_entSys, do_entSys, sys_getrlimit
 627         .quad sys_setrlimit, do_entSys, sys_setsid, do_entSys, do_entSys
 628 /*150*/ .quad sys_getsockname, do_entSys, do_entSys, do_entSys, do_entSys
 629         .quad do_entSys, sys_sigaction, do_entSys, do_entSys, osf_getdirentries
 630         .quad osf_statfs, osf_fstatfs, do_entSys, do_entSys, do_entSys
 631         .quad osf_getdomainname, do_entSys, do_entSys, do_entSys, do_entSys
 632         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 633         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 634         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 635         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 636         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 637         .quad do_entSys, do_entSys, do_entSys, do_entSys, osf_swapon
 638 /*200*/ .quad sys_msgctl, sys_msgget, sys_msgrcv, sys_msgsnd, sys_semctl
 639         .quad sys_semget, sys_semop, osf_utsname, do_entSys, osf_shmat
 640         .quad sys_shmctl, sys_shmdt, sys_shmget, do_entSys, do_entSys
 641         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 642         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 643         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 644         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 645         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 646         .quad do_entSys, do_entSys, do_entSys, do_entSys, osf_proplist_syscall
 647         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 648 /*250*/ .quad do_entSys, osf_usleep_thread, do_entSys, do_entSys, do_entSys
 649         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 650         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 651         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 652         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 653         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 654         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 655         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 656         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 657         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 658 /* linux-specific system calls start at 300 */
 659 /*300*/ .quad sys_bdflush, sys_sethae, sys_mount, sys_adjtimex, sys_swapoff
 660         .quad sys_getdents, sys_create_module, sys_init_module, sys_delete_module, sys_get_kernel_syms
 661         .quad sys_syslog, sys_reboot, sys_clone, sys_uselib, do_entSys
 662         .quad do_entSys, do_entSys, do_entSys, do_entSys, do_entSys
 663 

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