arch/x86/ia32/ia32entry.S

   1 /*
   2  * Compatibility mode system call entry point for x86-64.
   3  *
   4  * Copyright 2000-2002 Andi Kleen, SuSE Labs.
   5  */
   6
   7 #include <asm/dwarf2.h>
   8 #include <asm/calling.h>
   9 #include <asm/asm-offsets.h>
  10 #include <asm/current.h>
  11 #include <asm/errno.h>
  12 #include <asm/ia32_unistd.h>
  13 #include <asm/thread_info.h>
  14 #include <asm/segment.h>
  15 #include <asm/irqflags.h>
  16 #include <linux/linkage.h>
  17
  18 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
  19 #include <linux/elf-em.h>
  20 #define AUDIT_ARCH_I386         (EM_386|__AUDIT_ARCH_LE)
  21 #define __AUDIT_ARCH_LE    0x40000000
  22
  23 #ifndef CONFIG_AUDITSYSCALL
  24 #define sysexit_audit int_ret_from_sys_call
  25 #define sysretl_audit int_ret_from_sys_call
  26 #endif
  27
  28 #define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
  29
  30         .macro IA32_ARG_FIXUP noebp=0
  31         movl    %edi,%r8d
  32         .if \noebp
  33         .else
  34         movl    %ebp,%r9d
  35         .endif
  36         xchg    %ecx,%esi
  37         movl    %ebx,%edi
  38         movl    %edx,%edx       /* zero extension */
  39         .endm
  40
  41         /* clobbers %eax */
  42         .macro  CLEAR_RREGS _r9=rax
  43         xorl    %eax,%eax
  44         movq    %rax,R11(%rsp)
  45         movq    %rax,R10(%rsp)
  46         movq    %\_r9,R9(%rsp)
  47         movq    %rax,R8(%rsp)
  48         .endm
  49
  50         /*
  51          * Reload arg registers from stack in case ptrace changed them.
  52          * We don't reload %eax because syscall_trace_enter() returned
  53          * the value it wants us to use in the table lookup.
  54          */
  55         .macro LOAD_ARGS32 offset, _r9=0
  56         .if \_r9
  57         movl \offset+16(%rsp),%r9d
  58         .endif
  59         movl \offset+40(%rsp),%ecx
  60         movl \offset+48(%rsp),%edx
  61         movl \offset+56(%rsp),%esi
  62         movl \offset+64(%rsp),%edi
  63         .endm
  64
  65         .macro CFI_STARTPROC32 simple
  66         CFI_STARTPROC   \simple
  67         CFI_UNDEFINED   r8
  68         CFI_UNDEFINED   r9
  69         CFI_UNDEFINED   r10
  70         CFI_UNDEFINED   r11
  71         CFI_UNDEFINED   r12
  72         CFI_UNDEFINED   r13
  73         CFI_UNDEFINED   r14
  74         CFI_UNDEFINED   r15
  75         .endm
  76
  77 #ifdef CONFIG_PARAVIRT
  78 ENTRY(native_usergs_sysret32)
  79         swapgs
  80         sysretl
  81 ENDPROC(native_usergs_sysret32)
  82
  83 ENTRY(native_irq_enable_sysexit)
  84         swapgs
  85         sti
  86         sysexit
  87 ENDPROC(native_irq_enable_sysexit)
  88 #endif
  89
  90 /*
  91  * 32bit SYSENTER instruction entry.
  92  *
  93  * Arguments:
  94  * %eax System call number.
  95  * %ebx Arg1
  96  * %ecx Arg2
  97  * %edx Arg3
  98  * %esi Arg4
  99  * %edi Arg5
 100  * %ebp user stack
 101  * 0(%ebp) Arg6
 102  *
 103  * Interrupts off.
 104  *
 105  * This is purely a fast path. For anything complicated we use the int 0x80
 106  * path below.  Set up a complete hardware stack frame to share code
 107  * with the int 0x80 path.
 108  */
 109 ENTRY(ia32_sysenter_target)
 110         CFI_STARTPROC32 simple
 111         CFI_SIGNAL_FRAME
 112         CFI_DEF_CFA     rsp,0
 113         CFI_REGISTER    rsp,rbp
 114         SWAPGS_UNSAFE_STACK
 115         movq    %gs:pda_kernelstack, %rsp
 116         addq    $(PDA_STACKOFFSET),%rsp
 117         /*
 118          * No need to follow this irqs on/off section: the syscall
 119          * disabled irqs, here we enable it straight after entry:
 120          */
 121         ENABLE_INTERRUPTS(CLBR_NONE)
 122         movl    %ebp,%ebp               /* zero extension */
 123         pushq   $__USER32_DS
 124         CFI_ADJUST_CFA_OFFSET 8
 125         /*CFI_REL_OFFSET ss,0*/
 126         pushq   %rbp
 127         CFI_ADJUST_CFA_OFFSET 8
 128         CFI_REL_OFFSET rsp,0
 129         pushfq
 130         CFI_ADJUST_CFA_OFFSET 8
 131         /*CFI_REL_OFFSET rflags,0*/
 132         movl    8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d
 133         CFI_REGISTER rip,r10
 134         pushq   $__USER32_CS
 135         CFI_ADJUST_CFA_OFFSET 8
 136         /*CFI_REL_OFFSET cs,0*/
 137         movl    %eax, %eax
 138         pushq   %r10
 139         CFI_ADJUST_CFA_OFFSET 8
 140         CFI_REL_OFFSET rip,0
 141         pushq   %rax
 142         CFI_ADJUST_CFA_OFFSET 8
 143         cld
 144         SAVE_ARGS 0,0,1
 145         /* no need to do an access_ok check here because rbp has been
 146            32bit zero extended */
 147 1:      movl    (%rbp),%ebp
 148         .section __ex_table,"a"
 149         .quad 1b,ia32_badarg
 150         .previous
 151         GET_THREAD_INFO(%r10)
 152         orl    $TS_COMPAT,TI_status(%r10)
 153         testl  $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
 154         CFI_REMEMBER_STATE
 155         jnz  sysenter_tracesys
 156         cmpl    $(IA32_NR_syscalls-1),%eax
 157         ja      ia32_badsys
 158 sysenter_do_call:
 159         IA32_ARG_FIXUP
 160 sysenter_dispatch:
 161         call    *ia32_sys_call_table(,%rax,8)
 162         movq    %rax,RAX-ARGOFFSET(%rsp)
 163         GET_THREAD_INFO(%r10)
 164         DISABLE_INTERRUPTS(CLBR_NONE)
 165         TRACE_IRQS_OFF
 166         testl   $_TIF_ALLWORK_MASK,TI_flags(%r10)
 167         jnz     sysexit_audit
 168 sysexit_from_sys_call:
 169         andl    $~TS_COMPAT,TI_status(%r10)
 170         /* clear IF, that popfq doesn't enable interrupts early */
 171         andl  $~0x200,EFLAGS-R11(%rsp)
 172         movl    RIP-R11(%rsp),%edx              /* User %eip */
 173         CFI_REGISTER rip,rdx
 174         RESTORE_ARGS 1,24,1,1,1,1
 175         popfq
 176         CFI_ADJUST_CFA_OFFSET -8
 177         /*CFI_RESTORE rflags*/
 178         popq    %rcx                            /* User %esp */
 179         CFI_ADJUST_CFA_OFFSET -8
 180         CFI_REGISTER rsp,rcx
 181         TRACE_IRQS_ON
 182         ENABLE_INTERRUPTS_SYSEXIT32
 183
 184 #ifdef CONFIG_AUDITSYSCALL
 185         .macro auditsys_entry_common
 186         movl %esi,%r9d                  /* 6th arg: 4th syscall arg */
 187         movl %edx,%r8d                  /* 5th arg: 3rd syscall arg */
 188         /* (already in %ecx)               4th arg: 2nd syscall arg */
 189         movl %ebx,%edx                  /* 3rd arg: 1st syscall arg */
 190         movl %eax,%esi                  /* 2nd arg: syscall number */
 191         movl $AUDIT_ARCH_I386,%edi      /* 1st arg: audit arch */
 192         call audit_syscall_entry
 193         movl RAX-ARGOFFSET(%rsp),%eax   /* reload syscall number */
 194         cmpl $(IA32_NR_syscalls-1),%eax
 195         ja ia32_badsys
 196         movl %ebx,%edi                  /* reload 1st syscall arg */
 197         movl RCX-ARGOFFSET(%rsp),%esi   /* reload 2nd syscall arg */
 198         movl RDX-ARGOFFSET(%rsp),%edx   /* reload 3rd syscall arg */
 199         movl RSI-ARGOFFSET(%rsp),%ecx   /* reload 4th syscall arg */
 200         movl RDI-ARGOFFSET(%rsp),%r8d   /* reload 5th syscall arg */
 201         .endm
 202
 203         .macro auditsys_exit exit,ebpsave=RBP
 204         testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
 205         jnz int_ret_from_sys_call
 206         TRACE_IRQS_ON
 207         sti
 208         movl %eax,%esi          /* second arg, syscall return value */
 209         cmpl $0,%eax            /* is it < 0? */
 210         setl %al                /* 1 if so, 0 if not */
 211         movzbl %al,%edi         /* zero-extend that into %edi */
 212         inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */
 213         call audit_syscall_exit
 214         GET_THREAD_INFO(%r10)
 215         movl RAX-ARGOFFSET(%rsp),%eax   /* reload syscall return value */
 216         movl \ebpsave-ARGOFFSET(%rsp),%ebp /* reload user register value */
 217         movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
 218         cli
 219         TRACE_IRQS_OFF
 220         testl %edi,TI_flags(%r10)
 221         jnz int_with_check
 222         jmp \exit
 223         .endm
 224
 225 sysenter_auditsys:
 226         CFI_RESTORE_STATE
 227         auditsys_entry_common
 228         movl %ebp,%r9d                  /* reload 6th syscall arg */
 229         jmp sysenter_dispatch
 230
 231 sysexit_audit:
 232         auditsys_exit sysexit_from_sys_call
 233 #endif
 234
 235 sysenter_tracesys:
 236 #ifdef CONFIG_AUDITSYSCALL
 237         testl   $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
 238         jz      sysenter_auditsys
 239 #endif
 240         SAVE_REST
 241         CLEAR_RREGS
 242         movq    $-ENOSYS,RAX(%rsp)/* ptrace can change this for a bad syscall */
 243         movq    %rsp,%rdi        /* &pt_regs -> arg1 */
 244         call    syscall_trace_enter
 245         LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
 246         RESTORE_REST
 247         cmpl    $(IA32_NR_syscalls-1),%eax
 248         ja      int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */
 249         jmp     sysenter_do_call
 250         CFI_ENDPROC
 251 ENDPROC(ia32_sysenter_target)
 252
 253 /*
 254  * 32bit SYSCALL instruction entry.
 255  *
 256  * Arguments:
 257  * %eax System call number.
 258  * %ebx Arg1
 259  * %ecx return EIP
 260  * %edx Arg3
 261  * %esi Arg4
 262  * %edi Arg5
 263  * %ebp Arg2    [note: not saved in the stack frame, should not be touched]
 264  * %esp user stack
 265  * 0(%esp) Arg6
 266  *
 267  * Interrupts off.
 268  *
 269  * This is purely a fast path. For anything complicated we use the int 0x80
 270  * path below.  Set up a complete hardware stack frame to share code
 271  * with the int 0x80 path.
 272  */
 273 ENTRY(ia32_cstar_target)
 274         CFI_STARTPROC32 simple
 275         CFI_SIGNAL_FRAME
 276         CFI_DEF_CFA     rsp,PDA_STACKOFFSET
 277         CFI_REGISTER    rip,rcx
 278         /*CFI_REGISTER  rflags,r11*/
 279         SWAPGS_UNSAFE_STACK
 280         movl    %esp,%r8d
 281         CFI_REGISTER    rsp,r8
 282         movq    %gs:pda_kernelstack,%rsp
 283         /*
 284          * No need to follow this irqs on/off section: the syscall
 285          * disabled irqs and here we enable it straight after entry:
 286          */
 287         ENABLE_INTERRUPTS(CLBR_NONE)
 288         SAVE_ARGS 8,1,1
 289         movl    %eax,%eax       /* zero extension */
 290         movq    %rax,ORIG_RAX-ARGOFFSET(%rsp)
 291         movq    %rcx,RIP-ARGOFFSET(%rsp)
 292         CFI_REL_OFFSET rip,RIP-ARGOFFSET
 293         movq    %rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */
 294         movl    %ebp,%ecx
 295         movq    $__USER32_CS,CS-ARGOFFSET(%rsp)
 296         movq    $__USER32_DS,SS-ARGOFFSET(%rsp)
 297         movq    %r11,EFLAGS-ARGOFFSET(%rsp)
 298         /*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/
 299         movq    %r8,RSP-ARGOFFSET(%rsp)
 300         CFI_REL_OFFSET rsp,RSP-ARGOFFSET
 301         /* no need to do an access_ok check here because r8 has been
 302            32bit zero extended */
 303         /* hardware stack frame is complete now */
 304 1:      movl    (%r8),%r9d
 305         .section __ex_table,"a"
 306         .quad 1b,ia32_badarg
 307         .previous
 308         GET_THREAD_INFO(%r10)
 309         orl   $TS_COMPAT,TI_status(%r10)
 310         testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
 311         CFI_REMEMBER_STATE
 312         jnz   cstar_tracesys
 313         cmpl $IA32_NR_syscalls-1,%eax
 314         ja  ia32_badsys
 315 cstar_do_call:
 316         IA32_ARG_FIXUP 1
 317 cstar_dispatch:
 318         call *ia32_sys_call_table(,%rax,8)
 319         movq %rax,RAX-ARGOFFSET(%rsp)
 320         GET_THREAD_INFO(%r10)
 321         DISABLE_INTERRUPTS(CLBR_NONE)
 322         TRACE_IRQS_OFF
 323         testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
 324         jnz sysretl_audit
 325 sysretl_from_sys_call:
 326         andl $~TS_COMPAT,TI_status(%r10)
 327         RESTORE_ARGS 1,-ARG_SKIP,1,1,1
 328         movl RIP-ARGOFFSET(%rsp),%ecx
 329         CFI_REGISTER rip,rcx
 330         movl EFLAGS-ARGOFFSET(%rsp),%r11d
 331         /*CFI_REGISTER rflags,r11*/
 332         TRACE_IRQS_ON
 333         movl RSP-ARGOFFSET(%rsp),%esp
 334         CFI_RESTORE rsp
 335         USERGS_SYSRET32
 336
 337 #ifdef CONFIG_AUDITSYSCALL
 338 cstar_auditsys:
 339         CFI_RESTORE_STATE
 340         movl %r9d,R9-ARGOFFSET(%rsp)    /* register to be clobbered by call */
 341         auditsys_entry_common
 342         movl R9-ARGOFFSET(%rsp),%r9d    /* reload 6th syscall arg */
 343         jmp cstar_dispatch
 344
 345 sysretl_audit:
 346         auditsys_exit sysretl_from_sys_call, RCX /* user %ebp in RCX slot */
 347 #endif
 348
 349 cstar_tracesys:
 350 #ifdef CONFIG_AUDITSYSCALL
 351         testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
 352         jz cstar_auditsys
 353 #endif
 354         xchgl %r9d,%ebp
 355         SAVE_REST
 356         CLEAR_RREGS r9
 357         movq $-ENOSYS,RAX(%rsp) /* ptrace can change this for a bad syscall */
 358         movq %rsp,%rdi        /* &pt_regs -> arg1 */
 359         call syscall_trace_enter
 360         LOAD_ARGS32 ARGOFFSET, 1  /* reload args from stack in case ptrace changed it */
 361         RESTORE_REST
 362         xchgl %ebp,%r9d
 363         cmpl $(IA32_NR_syscalls-1),%eax
 364         ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */
 365         jmp cstar_do_call
 366 END(ia32_cstar_target)
 367
 368 ia32_badarg:
 369         movq $-EFAULT,%rax
 370         jmp ia32_sysret
 371         CFI_ENDPROC
 372
 373 /*
 374  * Emulated IA32 system calls via int 0x80.
 375  *
 376  * Arguments:
 377  * %eax System call number.
 378  * %ebx Arg1
 379  * %ecx Arg2
 380  * %edx Arg3
 381  * %esi Arg4
 382  * %edi Arg5
 383  * %ebp Arg6    [note: not saved in the stack frame, should not be touched]
 384  *
 385  * Notes:
 386  * Uses the same stack frame as the x86-64 version.
 387  * All registers except %eax must be saved (but ptrace may violate that)
 388  * Arguments are zero extended. For system calls that want sign extension and
 389  * take long arguments a wrapper is needed. Most calls can just be called
 390  * directly.
 391  * Assumes it is only called from user space and entered with interrupts off.
 392  */
 393
 394 ENTRY(ia32_syscall)
 395         CFI_STARTPROC32 simple
 396         CFI_SIGNAL_FRAME
 397         CFI_DEF_CFA     rsp,SS+8-RIP
 398         /*CFI_REL_OFFSET        ss,SS-RIP*/
 399         CFI_REL_OFFSET  rsp,RSP-RIP
 400         /*CFI_REL_OFFSET        rflags,EFLAGS-RIP*/
 401         /*CFI_REL_OFFSET        cs,CS-RIP*/
 402         CFI_REL_OFFSET  rip,RIP-RIP
 403         PARAVIRT_ADJUST_EXCEPTION_FRAME
 404         SWAPGS
 405         /*
 406          * No need to follow this irqs on/off section: the syscall
 407          * disabled irqs and here we enable it straight after entry:
 408          */
 409         ENABLE_INTERRUPTS(CLBR_NONE)
 410         movl %eax,%eax
 411         pushq %rax
 412         CFI_ADJUST_CFA_OFFSET 8
 413         cld
 414         /* note the registers are not zero extended to the sf.
 415            this could be a problem. */
 416         SAVE_ARGS 0,0,1
 417         GET_THREAD_INFO(%r10)
 418         orl   $TS_COMPAT,TI_status(%r10)
 419         testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
 420         jnz ia32_tracesys
 421 ia32_do_syscall:
 422         cmpl $(IA32_NR_syscalls-1),%eax
 423         ja  int_ret_from_sys_call       /* ia32_tracesys has set RAX(%rsp) */
 424         IA32_ARG_FIXUP
 425         call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
 426 ia32_sysret:
 427         movq %rax,RAX-ARGOFFSET(%rsp)
 428         jmp int_ret_from_sys_call
 429
 430 ia32_tracesys:
 431         SAVE_REST
 432         CLEAR_RREGS
 433         movq $-ENOSYS,RAX(%rsp) /* ptrace can change this for a bad syscall */
 434         movq %rsp,%rdi        /* &pt_regs -> arg1 */
 435         call syscall_trace_enter
 436         LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
 437         RESTORE_REST
 438         jmp ia32_do_syscall
 439 END(ia32_syscall)
 440
 441 ia32_badsys:
 442         movq $0,ORIG_RAX-ARGOFFSET(%rsp)
 443         movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
 444         jmp int_ret_from_sys_call
 445
 446 quiet_ni_syscall:
 447         movq $-ENOSYS,%rax
 448         ret
 449         CFI_ENDPROC
 450
 451         .macro PTREGSCALL label, func, arg
 452         .globl \label
 453 \label:
 454         leaq \func(%rip),%rax
 455         leaq -ARGOFFSET+8(%rsp),\arg    /* 8 for return address */
 456         jmp  ia32_ptregs_common
 457         .endm
 458
 459         CFI_STARTPROC32
 460
 461         PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
 462         PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
 463         PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
 464         PTREGSCALL stub32_execve, sys32_execve, %rcx
 465         PTREGSCALL stub32_fork, sys_fork, %rdi
 466         PTREGSCALL stub32_clone, sys32_clone, %rdx
 467         PTREGSCALL stub32_vfork, sys_vfork, %rdi
 468         PTREGSCALL stub32_iopl, sys_iopl, %rsi
 469
 470 ENTRY(ia32_ptregs_common)
 471         popq %r11
 472         CFI_ENDPROC
 473         CFI_STARTPROC32 simple
 474         CFI_SIGNAL_FRAME
 475         CFI_DEF_CFA     rsp,SS+8-ARGOFFSET
 476         CFI_REL_OFFSET  rax,RAX-ARGOFFSET
 477         CFI_REL_OFFSET  rcx,RCX-ARGOFFSET
 478         CFI_REL_OFFSET  rdx,RDX-ARGOFFSET
 479         CFI_REL_OFFSET  rsi,RSI-ARGOFFSET
 480         CFI_REL_OFFSET  rdi,RDI-ARGOFFSET
 481         CFI_REL_OFFSET  rip,RIP-ARGOFFSET
 482 /*      CFI_REL_OFFSET  cs,CS-ARGOFFSET*/
 483 /*      CFI_REL_OFFSET  rflags,EFLAGS-ARGOFFSET*/
 484         CFI_REL_OFFSET  rsp,RSP-ARGOFFSET
 485 /*      CFI_REL_OFFSET  ss,SS-ARGOFFSET*/
 486         SAVE_REST
 487         call *%rax
 488         RESTORE_REST
 489         jmp  ia32_sysret        /* misbalances the return cache */
 490         CFI_ENDPROC
 491 END(ia32_ptregs_common)
 492
 493         .section .rodata,"a"
 494         .align 8
 495 ia32_sys_call_table:
 496         .quad sys_restart_syscall
 497         .quad sys_exit
 498         .quad stub32_fork
 499         .quad sys_read
 500         .quad sys_write
 501         .quad compat_sys_open           /* 5 */
 502         .quad sys_close
 503         .quad sys32_waitpid
 504         .quad sys_creat
 505         .quad sys_link
 506         .quad sys_unlink                /* 10 */
 507         .quad stub32_execve
 508         .quad sys_chdir
 509         .quad compat_sys_time
 510         .quad sys_mknod
 511         .quad sys_chmod         /* 15 */
 512         .quad sys_lchown16
 513         .quad quiet_ni_syscall                  /* old break syscall holder */
 514         .quad sys_stat
 515         .quad sys32_lseek
 516         .quad sys_getpid                /* 20 */
 517         .quad compat_sys_mount  /* mount  */
 518         .quad sys_oldumount     /* old_umount  */
 519         .quad sys_setuid16
 520         .quad sys_getuid16
 521         .quad compat_sys_stime  /* stime */             /* 25 */
 522         .quad compat_sys_ptrace /* ptrace */
 523         .quad sys_alarm
 524         .quad sys_fstat /* (old)fstat */
 525         .quad sys_pause
 526         .quad compat_sys_utime  /* 30 */
 527         .quad quiet_ni_syscall  /* old stty syscall holder */
 528         .quad quiet_ni_syscall  /* old gtty syscall holder */
 529         .quad sys_access
 530         .quad sys_nice
 531         .quad quiet_ni_syscall  /* 35 */        /* old ftime syscall holder */
 532         .quad sys_sync
 533         .quad sys32_kill
 534         .quad sys_rename
 535         .quad sys_mkdir
 536         .quad sys_rmdir         /* 40 */
 537         .quad sys_dup
 538         .quad sys32_pipe
 539         .quad compat_sys_times
 540         .quad quiet_ni_syscall                  /* old prof syscall holder */
 541         .quad sys_brk           /* 45 */
 542         .quad sys_setgid16
 543         .quad sys_getgid16
 544         .quad sys_signal
 545         .quad sys_geteuid16
 546         .quad sys_getegid16     /* 50 */
 547         .quad sys_acct
 548         .quad sys_umount                        /* new_umount */
 549         .quad quiet_ni_syscall                  /* old lock syscall holder */
 550         .quad compat_sys_ioctl
 551         .quad compat_sys_fcntl64                /* 55 */
 552         .quad quiet_ni_syscall                  /* old mpx syscall holder */
 553         .quad sys_setpgid
 554         .quad quiet_ni_syscall                  /* old ulimit syscall holder */
 555         .quad sys32_olduname
 556         .quad sys_umask         /* 60 */
 557         .quad sys_chroot
 558         .quad sys32_ustat
 559         .quad sys_dup2
 560         .quad sys_getppid
 561         .quad sys_getpgrp               /* 65 */
 562         .quad sys_setsid
 563         .quad sys32_sigaction
 564         .quad sys_sgetmask
 565         .quad sys_ssetmask
 566         .quad sys_setreuid16    /* 70 */
 567         .quad sys_setregid16
 568         .quad sys32_sigsuspend
 569         .quad compat_sys_sigpending
 570         .quad sys_sethostname
 571         .quad compat_sys_setrlimit      /* 75 */
 572         .quad compat_sys_old_getrlimit  /* old_getrlimit */
 573         .quad compat_sys_getrusage
 574         .quad compat_sys_gettimeofday
 575         .quad compat_sys_settimeofday
 576         .quad sys_getgroups16   /* 80 */
 577         .quad sys_setgroups16
 578         .quad sys32_old_select
 579         .quad sys_symlink
 580         .quad sys_lstat
 581         .quad sys_readlink              /* 85 */
 582         .quad sys_uselib
 583         .quad sys_swapon
 584         .quad sys_reboot
 585         .quad compat_sys_old_readdir
 586         .quad sys32_mmap                /* 90 */
 587         .quad sys_munmap
 588         .quad sys_truncate
 589         .quad sys_ftruncate
 590         .quad sys_fchmod
 591         .quad sys_fchown16              /* 95 */
 592         .quad sys_getpriority
 593         .quad sys_setpriority
 594         .quad quiet_ni_syscall                  /* old profil syscall holder */
 595         .quad compat_sys_statfs
 596         .quad compat_sys_fstatfs                /* 100 */
 597         .quad sys_ioperm
 598         .quad compat_sys_socketcall
 599         .quad sys_syslog
 600         .quad compat_sys_setitimer
 601         .quad compat_sys_getitimer      /* 105 */
 602         .quad compat_sys_newstat
 603         .quad compat_sys_newlstat
 604         .quad compat_sys_newfstat
 605         .quad sys32_uname
 606         .quad stub32_iopl               /* 110 */
 607         .quad sys_vhangup
 608         .quad quiet_ni_syscall  /* old "idle" system call */
 609         .quad sys32_vm86_warning        /* vm86old */
 610         .quad compat_sys_wait4
 611         .quad sys_swapoff               /* 115 */
 612         .quad compat_sys_sysinfo
 613         .quad sys32_ipc
 614         .quad sys_fsync
 615         .quad stub32_sigreturn
 616         .quad stub32_clone              /* 120 */
 617         .quad sys_setdomainname
 618         .quad sys_uname
 619         .quad sys_modify_ldt
 620         .quad compat_sys_adjtimex
 621         .quad sys32_mprotect            /* 125 */
 622         .quad compat_sys_sigprocmask
 623         .quad quiet_ni_syscall          /* create_module */
 624         .quad sys_init_module
 625         .quad sys_delete_module
 626         .quad quiet_ni_syscall          /* 130  get_kernel_syms */
 627         .quad sys32_quotactl
 628         .quad sys_getpgid
 629         .quad sys_fchdir
 630         .quad quiet_ni_syscall  /* bdflush */
 631         .quad sys_sysfs         /* 135 */
 632         .quad sys_personality
 633         .quad quiet_ni_syscall  /* for afs_syscall */
 634         .quad sys_setfsuid16
 635         .quad sys_setfsgid16
 636         .quad sys_llseek                /* 140 */
 637         .quad compat_sys_getdents
 638         .quad compat_sys_select
 639         .quad sys_flock
 640         .quad sys_msync
 641         .quad compat_sys_readv          /* 145 */
 642         .quad compat_sys_writev
 643         .quad sys_getsid
 644         .quad sys_fdatasync
 645         .quad sys32_sysctl      /* sysctl */
 646         .quad sys_mlock         /* 150 */
 647         .quad sys_munlock
 648         .quad sys_mlockall
 649         .quad sys_munlockall
 650         .quad sys_sched_setparam
 651         .quad sys_sched_getparam   /* 155 */
 652         .quad sys_sched_setscheduler
 653         .quad sys_sched_getscheduler
 654         .quad sys_sched_yield
 655         .quad sys_sched_get_priority_max
 656         .quad sys_sched_get_priority_min  /* 160 */
 657         .quad sys32_sched_rr_get_interval
 658         .quad compat_sys_nanosleep
 659         .quad sys_mremap
 660         .quad sys_setresuid16
 661         .quad sys_getresuid16   /* 165 */
 662         .quad sys32_vm86_warning        /* vm86 */
 663         .quad quiet_ni_syscall  /* query_module */
 664         .quad sys_poll
 665         .quad compat_sys_nfsservctl
 666         .quad sys_setresgid16   /* 170 */
 667         .quad sys_getresgid16
 668         .quad sys_prctl
 669         .quad stub32_rt_sigreturn
 670         .quad sys32_rt_sigaction
 671         .quad sys32_rt_sigprocmask      /* 175 */
 672         .quad sys32_rt_sigpending
 673         .quad compat_sys_rt_sigtimedwait
 674         .quad sys32_rt_sigqueueinfo
 675         .quad sys_rt_sigsuspend
 676         .quad sys32_pread               /* 180 */
 677         .quad sys32_pwrite
 678         .quad sys_chown16
 679         .quad sys_getcwd
 680         .quad sys_capget
 681         .quad sys_capset
 682         .quad stub32_sigaltstack
 683         .quad sys32_sendfile
 684         .quad quiet_ni_syscall          /* streams1 */
 685         .quad quiet_ni_syscall          /* streams2 */
 686         .quad stub32_vfork            /* 190 */
 687         .quad compat_sys_getrlimit
 688         .quad sys32_mmap2
 689         .quad sys32_truncate64
 690         .quad sys32_ftruncate64
 691         .quad sys32_stat64              /* 195 */
 692         .quad sys32_lstat64
 693         .quad sys32_fstat64
 694         .quad sys_lchown
 695         .quad sys_getuid
 696         .quad sys_getgid                /* 200 */
 697         .quad sys_geteuid
 698         .quad sys_getegid
 699         .quad sys_setreuid
 700         .quad sys_setregid
 701         .quad sys_getgroups     /* 205 */
 702         .quad sys_setgroups
 703         .quad sys_fchown
 704         .quad sys_setresuid
 705         .quad sys_getresuid
 706         .quad sys_setresgid     /* 210 */
 707         .quad sys_getresgid
 708         .quad sys_chown
 709         .quad sys_setuid
 710         .quad sys_setgid
 711         .quad sys_setfsuid              /* 215 */
 712         .quad sys_setfsgid
 713         .quad sys_pivot_root
 714         .quad sys_mincore
 715         .quad sys_madvise
 716         .quad compat_sys_getdents64     /* 220 getdents64 */
 717         .quad compat_sys_fcntl64
 718         .quad quiet_ni_syscall          /* tux */
 719         .quad quiet_ni_syscall          /* security */
 720         .quad sys_gettid
 721         .quad sys32_readahead   /* 225 */
 722         .quad sys_setxattr
 723         .quad sys_lsetxattr
 724         .quad sys_fsetxattr
 725         .quad sys_getxattr
 726         .quad sys_lgetxattr     /* 230 */
 727         .quad sys_fgetxattr
 728         .quad sys_listxattr
 729         .quad sys_llistxattr
 730         .quad sys_flistxattr
 731         .quad sys_removexattr   /* 235 */
 732         .quad sys_lremovexattr
 733         .quad sys_fremovexattr
 734         .quad sys_tkill
 735         .quad sys_sendfile64
 736         .quad compat_sys_futex          /* 240 */
 737         .quad compat_sys_sched_setaffinity
 738         .quad compat_sys_sched_getaffinity
 739         .quad sys_set_thread_area
 740         .quad sys_get_thread_area
 741         .quad compat_sys_io_setup       /* 245 */
 742         .quad sys_io_destroy
 743         .quad compat_sys_io_getevents
 744         .quad compat_sys_io_submit
 745         .quad sys_io_cancel
 746         .quad sys32_fadvise64           /* 250 */
 747         .quad quiet_ni_syscall  /* free_huge_pages */
 748         .quad sys_exit_group
 749         .quad sys32_lookup_dcookie
 750         .quad sys_epoll_create
 751         .quad sys_epoll_ctl             /* 255 */
 752         .quad sys_epoll_wait
 753         .quad sys_remap_file_pages
 754         .quad sys_set_tid_address
 755         .quad compat_sys_timer_create
 756         .quad compat_sys_timer_settime  /* 260 */
 757         .quad compat_sys_timer_gettime
 758         .quad sys_timer_getoverrun
 759         .quad sys_timer_delete
 760         .quad compat_sys_clock_settime
 761         .quad compat_sys_clock_gettime  /* 265 */
 762         .quad compat_sys_clock_getres
 763         .quad compat_sys_clock_nanosleep
 764         .quad compat_sys_statfs64
 765         .quad compat_sys_fstatfs64
 766         .quad sys_tgkill                /* 270 */
 767         .quad compat_sys_utimes
 768         .quad sys32_fadvise64_64
 769         .quad quiet_ni_syscall  /* sys_vserver */
 770         .quad sys_mbind
 771         .quad compat_sys_get_mempolicy  /* 275 */
 772         .quad sys_set_mempolicy
 773         .quad compat_sys_mq_open
 774         .quad sys_mq_unlink
 775         .quad compat_sys_mq_timedsend
 776         .quad compat_sys_mq_timedreceive        /* 280 */
 777         .quad compat_sys_mq_notify
 778         .quad compat_sys_mq_getsetattr
 779         .quad compat_sys_kexec_load     /* reserved for kexec */
 780         .quad compat_sys_waitid
 781         .quad quiet_ni_syscall          /* 285: sys_altroot */
 782         .quad sys_add_key
 783         .quad sys_request_key
 784         .quad sys_keyctl
 785         .quad sys_ioprio_set
 786         .quad sys_ioprio_get            /* 290 */
 787         .quad sys_inotify_init
 788         .quad sys_inotify_add_watch
 789         .quad sys_inotify_rm_watch
 790         .quad sys_migrate_pages
 791         .quad compat_sys_openat         /* 295 */
 792         .quad sys_mkdirat
 793         .quad sys_mknodat
 794         .quad sys_fchownat
 795         .quad compat_sys_futimesat
 796         .quad sys32_fstatat             /* 300 */
 797         .quad sys_unlinkat
 798         .quad sys_renameat
 799         .quad sys_linkat
 800         .quad sys_symlinkat
 801         .quad sys_readlinkat            /* 305 */
 802         .quad sys_fchmodat
 803         .quad sys_faccessat
 804         .quad compat_sys_pselect6
 805         .quad compat_sys_ppoll
 806         .quad sys_unshare               /* 310 */
 807         .quad compat_sys_set_robust_list
 808         .quad compat_sys_get_robust_list
 809         .quad sys_splice
 810         .quad sys32_sync_file_range
 811         .quad sys_tee                   /* 315 */
 812         .quad compat_sys_vmsplice
 813         .quad compat_sys_move_pages
 814         .quad sys_getcpu
 815         .quad sys_epoll_pwait
 816         .quad compat_sys_utimensat      /* 320 */
 817         .quad compat_sys_signalfd
 818         .quad sys_timerfd_create
 819         .quad sys_eventfd
 820         .quad sys32_fallocate
 821         .quad compat_sys_timerfd_settime        /* 325 */
 822         .quad compat_sys_timerfd_gettime
 823         .quad compat_sys_signalfd4
 824         .quad sys_eventfd2
 825         .quad sys_epoll_create1
 826         .quad sys_dup3                  /* 330 */
 827         .quad sys_pipe2
 828         .quad sys_inotify_init1
 829 ia32_syscall_end: