ia32entry.S

/*
 * Compatibility mode system call entry point for x86-64. 
 * 		
 * Copyright 2000-2002 Andi Kleen, SuSE Labs.
 */		 

#include <asm/dwarf2.h>
#include <asm/calling.h>
#include <asm/asm-offsets.h>
#include <asm/current.h>
#include <asm/errno.h>
#include <asm/ia32_unistd.h>	
#include <asm/thread_info.h>	
#include <asm/segment.h>
#include <asm/irqflags.h>
#include <linux/linkage.h>
#include <linux/err.h>

/* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
#include <linux/elf-em.h>
#define AUDIT_ARCH_I386		(EM_386|__AUDIT_ARCH_LE)
#define __AUDIT_ARCH_LE	   0x40000000

#ifndef CONFIG_AUDITSYSCALL
#define sysexit_audit ia32_ret_from_sys_call
#define sysretl_audit ia32_ret_from_sys_call
#endif

	.section .entry.text, "ax"

#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)

	.macro IA32_ARG_FIXUP noebp=0
	movl	%edi,%r8d
	.if \noebp
	.else
	movl	%ebp,%r9d
	.endif
	xchg	%ecx,%esi
	movl	%ebx,%edi
	movl	%edx,%edx	/* zero extension */
	.endm 

	/* clobbers %eax */	
	.macro  CLEAR_RREGS offset=0, _r9=rax
	xorl 	%eax,%eax
	movq	%rax,\offset+R11(%rsp)
	movq	%rax,\offset+R10(%rsp)
	movq	%\_r9,\offset+R9(%rsp)
	movq	%rax,\offset+R8(%rsp)
	.endm

	/*
	 * Reload arg registers from stack in case ptrace changed them.
	 * We don't reload %eax because syscall_trace_enter() returned
	 * the %rax value we should see.  Instead, we just truncate that
	 * value to 32 bits again as we did on entry from user mode.
	 * If it's a new value set by user_regset during entry tracing,
	 * this matches the normal truncation of the user-mode value.
	 * If it's -1 to make us punt the syscall, then (u32)-1 is still
	 * an appropriately invalid value.
	 */
	.macro LOAD_ARGS32 offset, _r9=0
	.if \_r9
	movl \offset+16(%rsp),%r9d
	.endif
	movl \offset+40(%rsp),%ecx
	movl \offset+48(%rsp),%edx
	movl \offset+56(%rsp),%esi
	movl \offset+64(%rsp),%edi
	movl %eax,%eax			/* zero extension */
	.endm
	
	.macro CFI_STARTPROC32 simple
	CFI_STARTPROC	\simple
	CFI_UNDEFINED	r8
	CFI_UNDEFINED	r9
	CFI_UNDEFINED	r10
	CFI_UNDEFINED	r11
	CFI_UNDEFINED	r12
	CFI_UNDEFINED	r13
	CFI_UNDEFINED	r14
	CFI_UNDEFINED	r15
	.endm

#ifdef CONFIG_PARAVIRT
ENTRY(native_usergs_sysret32)
	swapgs
	sysretl
ENDPROC(native_usergs_sysret32)

ENTRY(native_irq_enable_sysexit)
	swapgs
	sti
	sysexit
ENDPROC(native_irq_enable_sysexit)
#endif

/*
 * 32bit SYSENTER instruction entry.
 *
 * Arguments:
 * %eax	System call number.
 * %ebx Arg1
 * %ecx Arg2
 * %edx Arg3
 * %esi Arg4
 * %edi Arg5
 * %ebp user stack
 * 0(%ebp) Arg6	
 * 	
 * Interrupts off.
 *	
 * This is purely a fast path. For anything complicated we use the int 0x80
 * path below.	Set up a complete hardware stack frame to share code
 * with the int 0x80 path.
 */ 	
ENTRY(ia32_sysenter_target)
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,0
	CFI_REGISTER	rsp,rbp
	SWAPGS_UNSAFE_STACK
	movq	PER_CPU_VAR(kernel_stack), %rsp
	addq	$(KERNEL_STACK_OFFSET),%rsp
	/*
	 * No need to follow this irqs on/off section: the syscall
	 * disabled irqs, here we enable it straight after entry:
	 */
	ENABLE_INTERRUPTS(CLBR_NONE)
 	movl	%ebp,%ebp		/* zero extension */
	pushq_cfi $__USER32_DS
	/*CFI_REL_OFFSET ss,0*/
	pushq_cfi %rbp
	CFI_REL_OFFSET rsp,0
	pushfq_cfi
	/*CFI_REL_OFFSET rflags,0*/
	movl	TI_sysenter_return+THREAD_INFO(%rsp,3*8-KERNEL_STACK_OFFSET),%r10d
	CFI_REGISTER rip,r10
	pushq_cfi $__USER32_CS
	/*CFI_REL_OFFSET cs,0*/
	movl	%eax, %eax
	pushq_cfi %r10
	CFI_REL_OFFSET rip,0
	pushq_cfi %rax
	cld
	SAVE_ARGS 0,1,0
 	/* no need to do an access_ok check here because rbp has been
 	   32bit zero extended */ 
1:	movl	(%rbp),%ebp
 	.section __ex_table,"a"
 	.quad 1b,ia32_badarg
 	.previous	
	orl     $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	testl   $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	CFI_REMEMBER_STATE
	jnz  sysenter_tracesys
	cmpq	$(IA32_NR_syscalls-1),%rax
	ja	ia32_badsys
sysenter_do_call:
	IA32_ARG_FIXUP
sysenter_dispatch:
	call	*ia32_sys_call_table(,%rax,8)
	movq	%rax,RAX-ARGOFFSET(%rsp)
	DISABLE_INTERRUPTS(CLBR_NONE)
	TRACE_IRQS_OFF
	testl	$_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	jnz	sysexit_audit
sysexit_from_sys_call:
	andl    $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	/* clear IF, that popfq doesn't enable interrupts early */
	andl  $~0x200,EFLAGS-R11(%rsp) 
	movl	RIP-R11(%rsp),%edx		/* User %eip */
	CFI_REGISTER rip,rdx
	RESTORE_ARGS 0,24,0,0,0,0
	xorq	%r8,%r8
	xorq	%r9,%r9
	xorq	%r10,%r10
	xorq	%r11,%r11
	popfq_cfi
	/*CFI_RESTORE rflags*/
	popq_cfi %rcx				/* User %esp */
	CFI_REGISTER rsp,rcx
	TRACE_IRQS_ON
	ENABLE_INTERRUPTS_SYSEXIT32

#ifdef CONFIG_AUDITSYSCALL
	.macro auditsys_entry_common
	movl %esi,%r9d			/* 6th arg: 4th syscall arg */
	movl %edx,%r8d			/* 5th arg: 3rd syscall arg */
	/* (already in %ecx)		   4th arg: 2nd syscall arg */
	movl %ebx,%edx			/* 3rd arg: 1st syscall arg */
	movl %eax,%esi			/* 2nd arg: syscall number */
	movl $AUDIT_ARCH_I386,%edi	/* 1st arg: audit arch */
	call audit_syscall_entry
	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall number */
	cmpq $(IA32_NR_syscalls-1),%rax
	ja ia32_badsys
	movl %ebx,%edi			/* reload 1st syscall arg */
	movl RCX-ARGOFFSET(%rsp),%esi	/* reload 2nd syscall arg */
	movl RDX-ARGOFFSET(%rsp),%edx	/* reload 3rd syscall arg */
	movl RSI-ARGOFFSET(%rsp),%ecx	/* reload 4th syscall arg */
	movl RDI-ARGOFFSET(%rsp),%r8d	/* reload 5th syscall arg */
	.endm

	.macro auditsys_exit exit
	testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	jnz ia32_ret_from_sys_call
	TRACE_IRQS_ON
	sti
	movl %eax,%esi		/* second arg, syscall return value */
	cmpl $-MAX_ERRNO,%eax	/* is it an error ? */
	jbe 1f
	movslq %eax, %rsi	/* if error sign extend to 64 bits */
1:	setbe %al		/* 1 if error, 0 if not */
	movzbl %al,%edi		/* zero-extend that into %edi */
	call __audit_syscall_exit
	movq RAX-ARGOFFSET(%rsp),%rax	/* reload syscall return value */
	movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
	cli
	TRACE_IRQS_OFF
	testl %edi,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	jz \exit
	CLEAR_RREGS -ARGOFFSET
	jmp int_with_check
	.endm

sysenter_auditsys:
	CFI_RESTORE_STATE
	auditsys_entry_common
	movl %ebp,%r9d			/* reload 6th syscall arg */
	jmp sysenter_dispatch

sysexit_audit:
	auditsys_exit sysexit_from_sys_call
#endif

sysenter_tracesys:
#ifdef CONFIG_AUDITSYSCALL
	testl	$(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	jz	sysenter_auditsys
#endif
	SAVE_REST
	CLEAR_RREGS
	movq	$-ENOSYS,RAX(%rsp)/* ptrace can change this for a bad syscall */
	movq	%rsp,%rdi        /* &pt_regs -> arg1 */
	call	syscall_trace_enter
	LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
	RESTORE_REST
	cmpq	$(IA32_NR_syscalls-1),%rax
	ja	int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */
	jmp	sysenter_do_call
	CFI_ENDPROC
ENDPROC(ia32_sysenter_target)

/*
 * 32bit SYSCALL instruction entry.
 *
 * Arguments:
 * %eax	System call number.
 * %ebx Arg1
 * %ecx return EIP 
 * %edx Arg3
 * %esi Arg4
 * %edi Arg5
 * %ebp Arg2    [note: not saved in the stack frame, should not be touched]
 * %esp user stack 
 * 0(%esp) Arg6
 * 	
 * Interrupts off.
 *	
 * This is purely a fast path. For anything complicated we use the int 0x80
 * path below.	Set up a complete hardware stack frame to share code
 * with the int 0x80 path.	
 */ 	
ENTRY(ia32_cstar_target)
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,KERNEL_STACK_OFFSET
	CFI_REGISTER	rip,rcx
	/*CFI_REGISTER	rflags,r11*/
	SWAPGS_UNSAFE_STACK
	movl	%esp,%r8d
	CFI_REGISTER	rsp,r8
	movq	PER_CPU_VAR(kernel_stack),%rsp
	/*
	 * No need to follow this irqs on/off section: the syscall
	 * disabled irqs and here we enable it straight after entry:
	 */
	ENABLE_INTERRUPTS(CLBR_NONE)
	SAVE_ARGS 8,0,0
	movl 	%eax,%eax	/* zero extension */
	movq	%rax,ORIG_RAX-ARGOFFSET(%rsp)
	movq	%rcx,RIP-ARGOFFSET(%rsp)
	CFI_REL_OFFSET rip,RIP-ARGOFFSET
	movq	%rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */
	movl	%ebp,%ecx
	movq	$__USER32_CS,CS-ARGOFFSET(%rsp)
	movq	$__USER32_DS,SS-ARGOFFSET(%rsp)
	movq	%r11,EFLAGS-ARGOFFSET(%rsp)
	/*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/
	movq	%r8,RSP-ARGOFFSET(%rsp)	
	CFI_REL_OFFSET rsp,RSP-ARGOFFSET
	/* no need to do an access_ok check here because r8 has been
	   32bit zero extended */ 
	/* hardware stack frame is complete now */	
1:	movl	(%r8),%r9d
	.section __ex_table,"a"
	.quad 1b,ia32_badarg
	.previous	
	orl     $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	testl   $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	CFI_REMEMBER_STATE
	jnz   cstar_tracesys
	cmpq $IA32_NR_syscalls-1,%rax
	ja  ia32_badsys
cstar_do_call:
	IA32_ARG_FIXUP 1
cstar_dispatch:
	call *ia32_sys_call_table(,%rax,8)
	movq %rax,RAX-ARGOFFSET(%rsp)
	DISABLE_INTERRUPTS(CLBR_NONE)
	TRACE_IRQS_OFF
	testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	jnz sysretl_audit
sysretl_from_sys_call:
	andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	RESTORE_ARGS 0,-ARG_SKIP,0,0,0
	movl RIP-ARGOFFSET(%rsp),%ecx
	CFI_REGISTER rip,rcx
	movl EFLAGS-ARGOFFSET(%rsp),%r11d	
	/*CFI_REGISTER rflags,r11*/
	xorq	%r10,%r10
	xorq	%r9,%r9
	xorq	%r8,%r8
	TRACE_IRQS_ON
	movl RSP-ARGOFFSET(%rsp),%esp
	CFI_RESTORE rsp
	USERGS_SYSRET32
	
#ifdef CONFIG_AUDITSYSCALL
cstar_auditsys:
	CFI_RESTORE_STATE
	movl %r9d,R9-ARGOFFSET(%rsp)	/* register to be clobbered by call */
	auditsys_entry_common
	movl R9-ARGOFFSET(%rsp),%r9d	/* reload 6th syscall arg */
	jmp cstar_dispatch

sysretl_audit:
	auditsys_exit sysretl_from_sys_call
#endif

cstar_tracesys:
#ifdef CONFIG_AUDITSYSCALL
	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	jz cstar_auditsys
#endif
	xchgl %r9d,%ebp
	SAVE_REST
	CLEAR_RREGS 0, r9
	movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */
	movq %rsp,%rdi        /* &pt_regs -> arg1 */
	call syscall_trace_enter
	LOAD_ARGS32 ARGOFFSET, 1  /* reload args from stack in case ptrace changed it */
	RESTORE_REST
	xchgl %ebp,%r9d
	cmpq $(IA32_NR_syscalls-1),%rax
	ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */
	jmp cstar_do_call
END(ia32_cstar_target)
				
ia32_badarg:
	movq $-EFAULT,%rax
	jmp ia32_sysret
	CFI_ENDPROC

/* 
 * Emulated IA32 system calls via int 0x80. 
 *
 * Arguments:	 
 * %eax	System call number.
 * %ebx Arg1
 * %ecx Arg2
 * %edx Arg3
 * %esi Arg4
 * %edi Arg5
 * %ebp Arg6    [note: not saved in the stack frame, should not be touched]
 *
 * Notes:
 * Uses the same stack frame as the x86-64 version.	
 * All registers except %eax must be saved (but ptrace may violate that)
 * Arguments are zero extended. For system calls that want sign extension and
 * take long arguments a wrapper is needed. Most calls can just be called
 * directly.
 * Assumes it is only called from user space and entered with interrupts off.	
 */ 				

ENTRY(ia32_syscall)
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,SS+8-RIP
	/*CFI_REL_OFFSET	ss,SS-RIP*/
	CFI_REL_OFFSET	rsp,RSP-RIP
	/*CFI_REL_OFFSET	rflags,EFLAGS-RIP*/
	/*CFI_REL_OFFSET	cs,CS-RIP*/
	CFI_REL_OFFSET	rip,RIP-RIP
	PARAVIRT_ADJUST_EXCEPTION_FRAME
	SWAPGS
	/*
	 * No need to follow this irqs on/off section: the syscall
	 * disabled irqs and here we enable it straight after entry:
	 */
	ENABLE_INTERRUPTS(CLBR_NONE)
	movl %eax,%eax
	pushq_cfi %rax
	cld
	/* note the registers are not zero extended to the sf.
	   this could be a problem. */
	SAVE_ARGS 0,1,0
	orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
	jnz ia32_tracesys
	cmpq $(IA32_NR_syscalls-1),%rax
	ja ia32_badsys
ia32_do_call:
	IA32_ARG_FIXUP
	call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
ia32_sysret:
	movq %rax,RAX-ARGOFFSET(%rsp)
ia32_ret_from_sys_call:
	CLEAR_RREGS -ARGOFFSET
	jmp int_ret_from_sys_call 

ia32_tracesys:			 
	SAVE_REST
	CLEAR_RREGS
	movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */
	movq %rsp,%rdi        /* &pt_regs -> arg1 */
	call syscall_trace_enter
	LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */
	RESTORE_REST
	cmpq $(IA32_NR_syscalls-1),%rax
	ja  int_ret_from_sys_call	/* ia32_tracesys has set RAX(%rsp) */
	jmp ia32_do_call
END(ia32_syscall)

ia32_badsys:
	movq $0,ORIG_RAX-ARGOFFSET(%rsp)
	movq $-ENOSYS,%rax
	jmp ia32_sysret

quiet_ni_syscall:
	movq $-ENOSYS,%rax
	ret
	CFI_ENDPROC
	
	.macro PTREGSCALL label, func, arg
	ALIGN
GLOBAL(\label)
	leaq \func(%rip),%rax
	leaq -ARGOFFSET+8(%rsp),\arg	/* 8 for return address */
	jmp  ia32_ptregs_common	
	.endm

	CFI_STARTPROC32

	PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
	PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
	PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
	PTREGSCALL stub32_execve, sys32_execve, %rcx
	PTREGSCALL stub32_fork, sys_fork, %rdi
	PTREGSCALL stub32_clone, sys32_clone, %rdx
	PTREGSCALL stub32_vfork, sys_vfork, %rdi
	PTREGSCALL stub32_iopl, sys_iopl, %rsi

	ALIGN
ia32_ptregs_common:
	popq %r11
	CFI_ENDPROC
	CFI_STARTPROC32	simple
	CFI_SIGNAL_FRAME
	CFI_DEF_CFA	rsp,SS+8-ARGOFFSET
	CFI_REL_OFFSET	rax,RAX-ARGOFFSET
	CFI_REL_OFFSET	rcx,RCX-ARGOFFSET
	CFI_REL_OFFSET	rdx,RDX-ARGOFFSET
	CFI_REL_OFFSET	rsi,RSI-ARGOFFSET
	CFI_REL_OFFSET	rdi,RDI-ARGOFFSET
	CFI_REL_OFFSET	rip,RIP-ARGOFFSET
/*	CFI_REL_OFFSET	cs,CS-ARGOFFSET*/
/*	CFI_REL_OFFSET	rflags,EFLAGS-ARGOFFSET*/
	CFI_REL_OFFSET	rsp,RSP-ARGOFFSET
/*	CFI_REL_OFFSET	ss,SS-ARGOFFSET*/
	SAVE_REST
	call *%rax
	RESTORE_REST
	jmp  ia32_sysret	/* misbalances the return cache */
	CFI_ENDPROC
END(ia32_ptregs_common)

	.section .rodata,"a"
	.align 8
ia32_sys_call_table:
	.quad sys_restart_syscall
	.quad sys_exit
	.quad stub32_fork
	.quad sys_read
	.quad sys_write
	.quad compat_sys_open		/* 5 */
	.quad sys_close
	.quad sys32_waitpid
	.quad sys_creat
	.quad sys_link
	.quad sys_unlink		/* 10 */
	.quad stub32_execve
	.quad sys_chdir
	.quad compat_sys_time
	.quad sys_mknod
	.quad sys_chmod		/* 15 */
	.quad sys_lchown16
	.quad quiet_ni_syscall			/* old break syscall holder */
	.quad sys_stat
	.quad sys32_lseek
	.quad sys_getpid		/* 20 */
	.quad compat_sys_mount	/* mount  */
	.quad sys_oldumount	/* old_umount  */
	.quad sys_setuid16
	.quad sys_getuid16
	.quad compat_sys_stime	/* stime */		/* 25 */
	.quad compat_sys_ptrace	/* ptrace */
	.quad sys_alarm
	.quad sys_fstat	/* (old)fstat */
	.quad sys_pause
	.quad compat_sys_utime	/* 30 */
	.quad quiet_ni_syscall	/* old stty syscall holder */
	.quad quiet_ni_syscall	/* old gtty syscall holder */
	.quad sys_access
	.quad sys_nice	
	.quad quiet_ni_syscall	/* 35 */	/* old ftime syscall holder */
	.quad sys_sync
	.quad sys32_kill
	.quad sys_rename
	.quad sys_mkdir
	.quad sys_rmdir		/* 40 */
	.quad sys_dup
	.quad sys_pipe
	.quad compat_sys_times
	.quad quiet_ni_syscall			/* old prof syscall holder */
	.quad sys_brk		/* 45 */
	.quad sys_setgid16
	.quad sys_getgid16
	.quad sys_signal
	.quad sys_geteuid16
	.quad sys_getegid16	/* 50 */
	.quad sys_acct
	.quad sys_umount			/* new_umount */
	.quad quiet_ni_syscall			/* old lock syscall holder */
	.quad compat_sys_ioctl
	.quad compat_sys_fcntl64		/* 55 */
	.quad quiet_ni_syscall			/* old mpx syscall holder */
	.quad sys_setpgid
	.quad quiet_ni_syscall			/* old ulimit syscall holder */
	.quad sys_olduname
	.quad sys_umask		/* 60 */
	.quad sys_chroot
	.quad compat_sys_ustat
	.quad sys_dup2
	.quad sys_getppid
	.quad sys_getpgrp		/* 65 */
	.quad sys_setsid
	.quad sys32_sigaction
	.quad sys_sgetmask
	.quad sys_ssetmask
	.quad sys_setreuid16	/* 70 */
	.quad sys_setregid16
	.quad sys32_sigsuspend
	.quad compat_sys_sigpending
	.quad sys_sethostname
	.quad compat_sys_setrlimit	/* 75 */
	.quad compat_sys_old_getrlimit	/* old_getrlimit */
	.quad compat_sys_getrusage
	.quad compat_sys_gettimeofday
	.quad compat_sys_settimeofday
	.quad sys_getgroups16	/* 80 */
	.quad sys_setgroups16
	.quad compat_sys_old_select
	.quad sys_symlink
	.quad sys_lstat
	.quad sys_readlink		/* 85 */
	.quad sys_uselib
	.quad sys_swapon
	.quad sys_reboot
	.quad compat_sys_old_readdir
	.quad sys32_mmap		/* 90 */
	.quad sys_munmap
	.quad sys_truncate
	.quad sys_ftruncate
	.quad sys_fchmod
	.quad sys_fchown16		/* 95 */
	.quad sys_getpriority
	.quad sys_setpriority
	.quad quiet_ni_syscall			/* old profil syscall holder */
	.quad compat_sys_statfs
	.quad compat_sys_fstatfs		/* 100 */
	.quad sys_ioperm
	.quad compat_sys_socketcall
	.quad sys_syslog
	.quad compat_sys_setitimer
	.quad compat_sys_getitimer	/* 105 */
	.quad compat_sys_newstat
	.quad compat_sys_newlstat
	.quad compat_sys_newfstat
	.quad sys_uname
	.quad stub32_iopl		/* 110 */
	.quad sys_vhangup
	.quad quiet_ni_syscall	/* old "idle" system call */
	.quad sys32_vm86_warning	/* vm86old */ 
	.quad compat_sys_wait4
	.quad sys_swapoff		/* 115 */
	.quad compat_sys_sysinfo
	.quad sys32_ipc
	.quad sys_fsync
	.quad stub32_sigreturn
	.quad stub32_clone		/* 120 */
	.quad sys_setdomainname
	.quad sys_newuname
	.quad sys_modify_ldt
	.quad compat_sys_adjtimex
	.quad sys32_mprotect		/* 125 */
	.quad compat_sys_sigprocmask
	.quad quiet_ni_syscall		/* create_module */
	.quad sys_init_module
	.quad sys_delete_module
	.quad quiet_ni_syscall		/* 130  get_kernel_syms */
	.quad sys32_quotactl
	.quad sys_getpgid
	.quad sys_fchdir
	.quad quiet_ni_syscall	/* bdflush */
	.quad sys_sysfs		/* 135 */
	.quad sys_personality
	.quad quiet_ni_syscall	/* for afs_syscall */
	.quad sys_setfsuid16
	.quad sys_setfsgid16
	.quad sys_llseek		/* 140 */
	.quad compat_sys_getdents
	.quad compat_sys_select
	.quad sys_flock
	.quad sys_msync
	.quad compat_sys_readv		/* 145 */
	.quad compat_sys_writev
	.quad sys_getsid
	.quad sys_fdatasync
	.quad compat_sys_sysctl	/* sysctl */
	.quad sys_mlock		/* 150 */
	.quad sys_munlock
	.quad sys_mlockall
	.quad sys_munlockall
	.quad sys_sched_setparam
	.quad sys_sched_getparam   /* 155 */
	.quad sys_sched_setscheduler
	.quad sys_sched_getscheduler
	.quad sys_sched_yield
	.quad sys_sched_get_priority_max
	.quad sys_sched_get_priority_min  /* 160 */
	.quad sys32_sched_rr_get_interval
	.quad compat_sys_nanosleep
	.quad sys_mremap
	.quad sys_setresuid16
	.quad sys_getresuid16	/* 165 */
	.quad sys32_vm86_warning	/* vm86 */ 
	.quad quiet_ni_syscall	/* query_module */
	.quad sys_poll
	.quad quiet_ni_syscall /* old nfsservctl */
	.quad sys_setresgid16	/* 170 */
	.quad sys_getresgid16
	.quad sys_prctl
	.quad stub32_rt_sigreturn
	.quad sys32_rt_sigaction
	.quad sys32_rt_sigprocmask	/* 175 */
	.quad sys32_rt_sigpending
	.quad compat_sys_rt_sigtimedwait
	.quad sys32_rt_sigqueueinfo
	.quad sys_rt_sigsuspend
	.quad sys32_pread		/* 180 */
	.quad sys32_pwrite
	.quad sys_chown16
	.quad sys_getcwd
	.quad sys_capget
	.quad sys_capset
	.quad stub32_sigaltstack
	.quad sys32_sendfile
	.quad quiet_ni_syscall		/* streams1 */
	.quad quiet_ni_syscall		/* streams2 */
	.quad stub32_vfork            /* 190 */
	.quad compat_sys_getrlimit
	.quad sys_mmap_pgoff
	.quad sys32_truncate64
	.quad sys32_ftruncate64
	.quad sys32_stat64		/* 195 */
	.quad sys32_lstat64
	.quad sys32_fstat64
	.quad sys_lchown
	.quad sys_getuid
	.quad sys_getgid		/* 200 */
	.quad sys_geteuid
	.quad sys_getegid
	.quad sys_setreuid
	.quad sys_setregid
	.quad sys_getgroups	/* 205 */
	.quad sys_setgroups
	.quad sys_fchown
	.quad sys_setresuid
	.quad sys_getresuid
	.quad sys_setresgid	/* 210 */
	.quad sys_getresgid
	.quad sys_chown
	.quad sys_setuid
	.quad sys_setgid
	.quad sys_setfsuid		/* 215 */
	.quad sys_setfsgid
	.quad sys_pivot_root
	.quad sys_mincore
	.quad sys_madvise
	.quad compat_sys_getdents64	/* 220 getdents64 */
	.quad compat_sys_fcntl64	
	.quad quiet_ni_syscall		/* tux */
	.quad quiet_ni_syscall    	/* security */
	.quad sys_gettid	
	.quad sys32_readahead	/* 225 */
	.quad sys_setxattr
	.quad sys_lsetxattr
	.quad sys_fsetxattr
	.quad sys_getxattr
	.quad sys_lgetxattr	/* 230 */
	.quad sys_fgetxattr
	.quad sys_listxattr
	.quad sys_llistxattr
	.quad sys_flistxattr
	.quad sys_removexattr	/* 235 */
	.quad sys_lremovexattr
	.quad sys_fremovexattr
	.quad sys_tkill
	.quad sys_sendfile64 
	.quad compat_sys_futex		/* 240 */
	.quad compat_sys_sched_setaffinity
	.quad compat_sys_sched_getaffinity
	.quad sys_set_thread_area
	.quad sys_get_thread_area
	.quad compat_sys_io_setup	/* 245 */
	.quad sys_io_destroy
	.quad compat_sys_io_getevents
	.quad compat_sys_io_submit
	.quad sys_io_cancel
	.quad sys32_fadvise64		/* 250 */
	.quad quiet_ni_syscall 	/* free_huge_pages */
	.quad sys_exit_group
	.quad sys32_lookup_dcookie
	.quad sys_epoll_create
	.quad sys_epoll_ctl		/* 255 */
	.quad sys_epoll_wait
	.quad sys_remap_file_pages
	.quad sys_set_tid_address
	.quad compat_sys_timer_create
	.quad compat_sys_timer_settime	/* 260 */
	.quad compat_sys_timer_gettime
	.quad sys_timer_getoverrun
	.quad sys_timer_delete
	.quad compat_sys_clock_settime
	.quad compat_sys_clock_gettime	/* 265 */
	.quad compat_sys_clock_getres
	.quad compat_sys_clock_nanosleep
	.quad compat_sys_statfs64
	.quad compat_sys_fstatfs64
	.quad sys_tgkill		/* 270 */
	.quad compat_sys_utimes
	.quad sys32_fadvise64_64
	.quad quiet_ni_syscall	/* sys_vserver */
	.quad sys_mbind
	.quad compat_sys_get_mempolicy	/* 275 */
	.quad sys_set_mempolicy
	.quad compat_sys_mq_open
	.quad sys_mq_unlink
	.quad compat_sys_mq_timedsend
	.quad compat_sys_mq_timedreceive	/* 280 */
	.quad compat_sys_mq_notify
	.quad compat_sys_mq_getsetattr
	.quad compat_sys_kexec_load	/* reserved for kexec */
	.quad compat_sys_waitid
	.quad quiet_ni_syscall		/* 285: sys_altroot */
	.quad sys_add_key
	.quad sys_request_key
	.quad sys_keyctl
	.quad sys_ioprio_set
	.quad sys_ioprio_get		/* 290 */
	.quad sys_inotify_init
	.quad sys_inotify_add_watch
	.quad sys_inotify_rm_watch
	.quad sys_migrate_pages
	.quad compat_sys_openat		/* 295 */
	.quad sys_mkdirat
	.quad sys_mknodat
	.quad sys_fchownat
	.quad compat_sys_futimesat
	.quad sys32_fstatat		/* 300 */
	.quad sys_unlinkat
	.quad sys_renameat
	.quad sys_linkat
	.quad sys_symlinkat
	.quad sys_readlinkat		/* 305 */
	.quad sys_fchmodat
	.quad sys_faccessat
	.quad compat_sys_pselect6
	.quad compat_sys_ppoll
	.quad sys_unshare		/* 310 */
	.quad compat_sys_set_robust_list
	.quad compat_sys_get_robust_list
	.quad sys_splice
	.quad sys32_sync_file_range
	.quad sys_tee			/* 315 */
	.quad compat_sys_vmsplice
	.quad compat_sys_move_pages
	.quad sys_getcpu
	.quad sys_epoll_pwait
	.quad compat_sys_utimensat	/* 320 */
	.quad compat_sys_signalfd
	.quad sys_timerfd_create
	.quad sys_eventfd
	.quad sys32_fallocate
	.quad compat_sys_timerfd_settime	/* 325 */
	.quad compat_sys_timerfd_gettime
	.quad compat_sys_signalfd4
	.quad sys_eventfd2
	.quad sys_epoll_create1
	.quad sys_dup3				/* 330 */
	.quad sys_pipe2
	.quad sys_inotify_init1
	.quad compat_sys_preadv
	.quad compat_sys_pwritev
	.quad compat_sys_rt_tgsigqueueinfo	/* 335 */
	.quad sys_perf_event_open
	.quad compat_sys_recvmmsg
	.quad sys_fanotify_init
	.quad sys32_fanotify_mark
	.quad sys_prlimit64		/* 340 */
	.quad sys_name_to_handle_at
	.quad compat_sys_open_by_handle_at
	.quad compat_sys_clock_adjtime
	.quad sys_syncfs
	.quad compat_sys_sendmmsg	/* 345 */
	.quad sys_setns
	.quad compat_sys_process_vm_readv
	.quad compat_sys_process_vm_writev
ia32_syscall_end: