mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 15:26:41 +07:00
4337aac1e1
Wire up the io_pgetevents syscall that was introduced by commit
7a074e96de ("aio: implement io_pgetevents").
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19593/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
595 lines
13 KiB
ArmAsm
595 lines
13 KiB
ArmAsm
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995-99, 2000- 02, 06 Ralf Baechle <ralf@linux-mips.org>
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* Copyright (C) 2001 MIPS Technologies, Inc.
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* Copyright (C) 2004 Thiemo Seufer
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* Copyright (C) 2014 Imagination Technologies Ltd.
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*/
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#include <linux/errno.h>
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#include <asm/asm.h>
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#include <asm/asmmacro.h>
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#include <asm/irqflags.h>
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#include <asm/mipsregs.h>
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#include <asm/regdef.h>
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#include <asm/stackframe.h>
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#include <asm/isadep.h>
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#include <asm/sysmips.h>
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#include <asm/thread_info.h>
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#include <asm/unistd.h>
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#include <asm/war.h>
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#include <asm/asm-offsets.h>
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/* Highest syscall used of any syscall flavour */
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#define MAX_SYSCALL_NO __NR_O32_Linux + __NR_O32_Linux_syscalls
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.align 5
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NESTED(handle_sys, PT_SIZE, sp)
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.set noat
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SAVE_SOME
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TRACE_IRQS_ON_RELOAD
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STI
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.set at
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lw t1, PT_EPC(sp) # skip syscall on return
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addiu t1, 4 # skip to next instruction
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sw t1, PT_EPC(sp)
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sw a3, PT_R26(sp) # save a3 for syscall restarting
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/*
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* More than four arguments. Try to deal with it by copying the
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* stack arguments from the user stack to the kernel stack.
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* This Sucks (TM).
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*/
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lw t0, PT_R29(sp) # get old user stack pointer
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/*
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* We intentionally keep the kernel stack a little below the top of
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* userspace so we don't have to do a slower byte accurate check here.
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*/
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lw t5, TI_ADDR_LIMIT($28)
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addu t4, t0, 32
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and t5, t4
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bltz t5, bad_stack # -> sp is bad
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/*
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* Ok, copy the args from the luser stack to the kernel stack.
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*/
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.set push
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.set noreorder
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.set nomacro
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load_a4: user_lw(t5, 16(t0)) # argument #5 from usp
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load_a5: user_lw(t6, 20(t0)) # argument #6 from usp
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load_a6: user_lw(t7, 24(t0)) # argument #7 from usp
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load_a7: user_lw(t8, 28(t0)) # argument #8 from usp
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loads_done:
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sw t5, 16(sp) # argument #5 to ksp
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sw t6, 20(sp) # argument #6 to ksp
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sw t7, 24(sp) # argument #7 to ksp
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sw t8, 28(sp) # argument #8 to ksp
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.set pop
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.section __ex_table,"a"
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PTR load_a4, bad_stack_a4
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PTR load_a5, bad_stack_a5
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PTR load_a6, bad_stack_a6
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PTR load_a7, bad_stack_a7
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.previous
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lw t0, TI_FLAGS($28) # syscall tracing enabled?
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li t1, _TIF_WORK_SYSCALL_ENTRY
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and t0, t1
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bnez t0, syscall_trace_entry # -> yes
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syscall_common:
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subu v0, v0, __NR_O32_Linux # check syscall number
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sltiu t0, v0, __NR_O32_Linux_syscalls + 1
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beqz t0, illegal_syscall
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sll t0, v0, 2
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la t1, sys_call_table
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addu t1, t0
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lw t2, (t1) # syscall routine
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beqz t2, illegal_syscall
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jalr t2 # Do The Real Thing (TM)
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li t0, -EMAXERRNO - 1 # error?
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sltu t0, t0, v0
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sw t0, PT_R7(sp) # set error flag
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beqz t0, 1f
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lw t1, PT_R2(sp) # syscall number
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negu v0 # error
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sw t1, PT_R0(sp) # save it for syscall restarting
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1: sw v0, PT_R2(sp) # result
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o32_syscall_exit:
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j syscall_exit_partial
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/* ------------------------------------------------------------------------ */
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syscall_trace_entry:
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SAVE_STATIC
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move a0, sp
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/*
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* syscall number is in v0 unless we called syscall(__NR_###)
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* where the real syscall number is in a0
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*/
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move a1, v0
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subu t2, v0, __NR_O32_Linux
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bnez t2, 1f /* __NR_syscall at offset 0 */
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lw a1, PT_R4(sp)
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1: jal syscall_trace_enter
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bltz v0, 1f # seccomp failed? Skip syscall
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RESTORE_STATIC
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lw v0, PT_R2(sp) # Restore syscall (maybe modified)
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lw a0, PT_R4(sp) # Restore argument registers
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lw a1, PT_R5(sp)
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lw a2, PT_R6(sp)
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lw a3, PT_R7(sp)
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j syscall_common
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1: j syscall_exit
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/* ------------------------------------------------------------------------ */
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/*
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* Our open-coded access area sanity test for the stack pointer
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* failed. We probably should handle this case a bit more drastic.
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*/
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bad_stack:
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li v0, EFAULT
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sw v0, PT_R2(sp)
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li t0, 1 # set error flag
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sw t0, PT_R7(sp)
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j o32_syscall_exit
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bad_stack_a4:
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li t5, 0
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b load_a5
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bad_stack_a5:
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li t6, 0
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b load_a6
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bad_stack_a6:
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li t7, 0
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b load_a7
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bad_stack_a7:
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li t8, 0
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b loads_done
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/*
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* The system call does not exist in this kernel
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*/
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illegal_syscall:
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li v0, ENOSYS # error
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sw v0, PT_R2(sp)
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li t0, 1 # set error flag
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sw t0, PT_R7(sp)
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j o32_syscall_exit
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END(handle_sys)
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LEAF(sys_syscall)
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subu t0, a0, __NR_O32_Linux # check syscall number
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sltiu v0, t0, __NR_O32_Linux_syscalls + 1
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beqz t0, einval # do not recurse
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sll t1, t0, 2
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beqz v0, einval
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lw t2, sys_call_table(t1) # syscall routine
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move a0, a1 # shift argument registers
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move a1, a2
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move a2, a3
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lw a3, 16(sp)
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lw t4, 20(sp)
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lw t5, 24(sp)
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lw t6, 28(sp)
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sw t4, 16(sp)
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sw t5, 20(sp)
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sw t6, 24(sp)
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jr t2
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/* Unreached */
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einval: li v0, -ENOSYS
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jr ra
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END(sys_syscall)
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.align 2
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.type sys_call_table, @object
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EXPORT(sys_call_table)
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PTR sys_syscall /* 4000 */
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PTR sys_exit
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PTR __sys_fork
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PTR sys_read
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PTR sys_write
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PTR sys_open /* 4005 */
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PTR sys_close
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PTR sys_waitpid
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PTR sys_creat
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PTR sys_link
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PTR sys_unlink /* 4010 */
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PTR sys_execve
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PTR sys_chdir
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PTR sys_time
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PTR sys_mknod
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PTR sys_chmod /* 4015 */
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PTR sys_lchown
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PTR sys_ni_syscall
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PTR sys_ni_syscall /* was sys_stat */
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PTR sys_lseek
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PTR sys_getpid /* 4020 */
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PTR sys_mount
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PTR sys_oldumount
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PTR sys_setuid
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PTR sys_getuid
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PTR sys_stime /* 4025 */
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PTR sys_ptrace
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PTR sys_alarm
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PTR sys_ni_syscall /* was sys_fstat */
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PTR sys_pause
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PTR sys_utime /* 4030 */
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PTR sys_ni_syscall
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PTR sys_ni_syscall
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PTR sys_access
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PTR sys_nice
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PTR sys_ni_syscall /* 4035 */
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PTR sys_sync
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PTR sys_kill
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PTR sys_rename
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PTR sys_mkdir
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PTR sys_rmdir /* 4040 */
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PTR sys_dup
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PTR sysm_pipe
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PTR sys_times
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PTR sys_ni_syscall
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PTR sys_brk /* 4045 */
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PTR sys_setgid
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PTR sys_getgid
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PTR sys_ni_syscall /* was signal(2) */
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PTR sys_geteuid
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PTR sys_getegid /* 4050 */
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PTR sys_acct
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PTR sys_umount
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PTR sys_ni_syscall
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PTR sys_ioctl
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PTR sys_fcntl /* 4055 */
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PTR sys_ni_syscall
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PTR sys_setpgid
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PTR sys_ni_syscall
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PTR sys_olduname
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PTR sys_umask /* 4060 */
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PTR sys_chroot
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PTR sys_ustat
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PTR sys_dup2
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PTR sys_getppid
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PTR sys_getpgrp /* 4065 */
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PTR sys_setsid
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PTR sys_sigaction
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PTR sys_sgetmask
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PTR sys_ssetmask
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PTR sys_setreuid /* 4070 */
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PTR sys_setregid
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PTR sys_sigsuspend
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PTR sys_sigpending
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PTR sys_sethostname
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PTR sys_setrlimit /* 4075 */
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PTR sys_getrlimit
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PTR sys_getrusage
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PTR sys_gettimeofday
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PTR sys_settimeofday
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PTR sys_getgroups /* 4080 */
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PTR sys_setgroups
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PTR sys_ni_syscall /* old_select */
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PTR sys_symlink
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PTR sys_ni_syscall /* was sys_lstat */
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PTR sys_readlink /* 4085 */
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PTR sys_uselib
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PTR sys_swapon
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PTR sys_reboot
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PTR sys_old_readdir
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PTR sys_mips_mmap /* 4090 */
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PTR sys_munmap
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PTR sys_truncate
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PTR sys_ftruncate
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PTR sys_fchmod
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PTR sys_fchown /* 4095 */
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PTR sys_getpriority
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PTR sys_setpriority
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PTR sys_ni_syscall
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PTR sys_statfs
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PTR sys_fstatfs /* 4100 */
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PTR sys_ni_syscall /* was ioperm(2) */
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PTR sys_socketcall
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PTR sys_syslog
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PTR sys_setitimer
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PTR sys_getitimer /* 4105 */
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PTR sys_newstat
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PTR sys_newlstat
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PTR sys_newfstat
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PTR sys_uname
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PTR sys_ni_syscall /* 4110 was iopl(2) */
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PTR sys_vhangup
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PTR sys_ni_syscall /* was sys_idle() */
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PTR sys_ni_syscall /* was sys_vm86 */
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PTR sys_wait4
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PTR sys_swapoff /* 4115 */
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PTR sys_sysinfo
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PTR sys_ipc
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PTR sys_fsync
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PTR sys_sigreturn
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PTR __sys_clone /* 4120 */
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PTR sys_setdomainname
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PTR sys_newuname
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PTR sys_ni_syscall /* sys_modify_ldt */
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PTR sys_adjtimex
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PTR sys_mprotect /* 4125 */
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PTR sys_sigprocmask
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PTR sys_ni_syscall /* was create_module */
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PTR sys_init_module
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PTR sys_delete_module
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PTR sys_ni_syscall /* 4130 was get_kernel_syms */
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PTR sys_quotactl
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PTR sys_getpgid
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PTR sys_fchdir
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PTR sys_bdflush
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PTR sys_sysfs /* 4135 */
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PTR sys_personality
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PTR sys_ni_syscall /* for afs_syscall */
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PTR sys_setfsuid
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PTR sys_setfsgid
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PTR sys_llseek /* 4140 */
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PTR sys_getdents
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PTR sys_select
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PTR sys_flock
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PTR sys_msync
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PTR sys_readv /* 4145 */
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PTR sys_writev
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PTR sys_cacheflush
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PTR sys_cachectl
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PTR __sys_sysmips
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PTR sys_ni_syscall /* 4150 */
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PTR sys_getsid
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PTR sys_fdatasync
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PTR sys_sysctl
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PTR sys_mlock
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PTR sys_munlock /* 4155 */
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PTR sys_mlockall
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PTR sys_munlockall
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PTR sys_sched_setparam
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PTR sys_sched_getparam
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PTR sys_sched_setscheduler /* 4160 */
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PTR sys_sched_getscheduler
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PTR sys_sched_yield
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PTR sys_sched_get_priority_max
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PTR sys_sched_get_priority_min
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PTR sys_sched_rr_get_interval /* 4165 */
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PTR sys_nanosleep
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PTR sys_mremap
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PTR sys_accept
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PTR sys_bind
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PTR sys_connect /* 4170 */
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PTR sys_getpeername
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PTR sys_getsockname
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PTR sys_getsockopt
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PTR sys_listen
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PTR sys_recv /* 4175 */
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PTR sys_recvfrom
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PTR sys_recvmsg
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PTR sys_send
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PTR sys_sendmsg
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PTR sys_sendto /* 4180 */
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PTR sys_setsockopt
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PTR sys_shutdown
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PTR sys_socket
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PTR sys_socketpair
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PTR sys_setresuid /* 4185 */
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PTR sys_getresuid
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PTR sys_ni_syscall /* was sys_query_module */
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PTR sys_poll
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PTR sys_ni_syscall /* was nfsservctl */
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PTR sys_setresgid /* 4190 */
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PTR sys_getresgid
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PTR sys_prctl
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PTR sys_rt_sigreturn
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PTR sys_rt_sigaction
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PTR sys_rt_sigprocmask /* 4195 */
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PTR sys_rt_sigpending
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PTR sys_rt_sigtimedwait
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PTR sys_rt_sigqueueinfo
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PTR sys_rt_sigsuspend
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PTR sys_pread64 /* 4200 */
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PTR sys_pwrite64
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PTR sys_chown
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PTR sys_getcwd
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PTR sys_capget
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PTR sys_capset /* 4205 */
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PTR sys_sigaltstack
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PTR sys_sendfile
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PTR sys_ni_syscall
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PTR sys_ni_syscall
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PTR sys_mips_mmap2 /* 4210 */
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PTR sys_truncate64
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PTR sys_ftruncate64
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PTR sys_stat64
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PTR sys_lstat64
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PTR sys_fstat64 /* 4215 */
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PTR sys_pivot_root
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PTR sys_mincore
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PTR sys_madvise
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PTR sys_getdents64
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PTR sys_fcntl64 /* 4220 */
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PTR sys_ni_syscall
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PTR sys_gettid
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PTR sys_readahead
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PTR sys_setxattr
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PTR sys_lsetxattr /* 4225 */
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PTR sys_fsetxattr
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PTR sys_getxattr
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PTR sys_lgetxattr
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PTR sys_fgetxattr
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PTR sys_listxattr /* 4230 */
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PTR sys_llistxattr
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PTR sys_flistxattr
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PTR sys_removexattr
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PTR sys_lremovexattr
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PTR sys_fremovexattr /* 4235 */
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PTR sys_tkill
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PTR sys_sendfile64
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PTR sys_futex
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#ifdef CONFIG_MIPS_MT_FPAFF
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/*
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* For FPU affinity scheduling on MIPS MT processors, we need to
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* intercept sys_sched_xxxaffinity() calls until we get a proper hook
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* in kernel/sched/core.c. Considered only temporary we only support
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* these hooks for the 32-bit kernel - there is no MIPS64 MT processor
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* atm.
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*/
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PTR mipsmt_sys_sched_setaffinity
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PTR mipsmt_sys_sched_getaffinity
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#else
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PTR sys_sched_setaffinity
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PTR sys_sched_getaffinity /* 4240 */
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#endif /* CONFIG_MIPS_MT_FPAFF */
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PTR sys_io_setup
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PTR sys_io_destroy
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PTR sys_io_getevents
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PTR sys_io_submit
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PTR sys_io_cancel /* 4245 */
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PTR sys_exit_group
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PTR sys_lookup_dcookie
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PTR sys_epoll_create
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PTR sys_epoll_ctl
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PTR sys_epoll_wait /* 4250 */
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PTR sys_remap_file_pages
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PTR sys_set_tid_address
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PTR sys_restart_syscall
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PTR sys_fadvise64_64
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PTR sys_statfs64 /* 4255 */
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PTR sys_fstatfs64
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PTR sys_timer_create
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PTR sys_timer_settime
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PTR sys_timer_gettime
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PTR sys_timer_getoverrun /* 4260 */
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PTR sys_timer_delete
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PTR sys_clock_settime
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PTR sys_clock_gettime
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PTR sys_clock_getres
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PTR sys_clock_nanosleep /* 4265 */
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PTR sys_tgkill
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PTR sys_utimes
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PTR sys_mbind
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PTR sys_get_mempolicy
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PTR sys_set_mempolicy /* 4270 */
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PTR sys_mq_open
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PTR sys_mq_unlink
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PTR sys_mq_timedsend
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PTR sys_mq_timedreceive
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PTR sys_mq_notify /* 4275 */
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PTR sys_mq_getsetattr
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PTR sys_ni_syscall /* sys_vserver */
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PTR sys_waitid
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PTR sys_ni_syscall /* available, was setaltroot */
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PTR sys_add_key /* 4280 */
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PTR sys_request_key
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PTR sys_keyctl
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PTR sys_set_thread_area
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PTR sys_inotify_init
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PTR sys_inotify_add_watch /* 4285 */
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PTR sys_inotify_rm_watch
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PTR sys_migrate_pages
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PTR sys_openat
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PTR sys_mkdirat
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PTR sys_mknodat /* 4290 */
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PTR sys_fchownat
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PTR sys_futimesat
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PTR sys_fstatat64
|
|
PTR sys_unlinkat
|
|
PTR sys_renameat /* 4295 */
|
|
PTR sys_linkat
|
|
PTR sys_symlinkat
|
|
PTR sys_readlinkat
|
|
PTR sys_fchmodat
|
|
PTR sys_faccessat /* 4300 */
|
|
PTR sys_pselect6
|
|
PTR sys_ppoll
|
|
PTR sys_unshare
|
|
PTR sys_splice
|
|
PTR sys_sync_file_range /* 4305 */
|
|
PTR sys_tee
|
|
PTR sys_vmsplice
|
|
PTR sys_move_pages
|
|
PTR sys_set_robust_list
|
|
PTR sys_get_robust_list /* 4310 */
|
|
PTR sys_kexec_load
|
|
PTR sys_getcpu
|
|
PTR sys_epoll_pwait
|
|
PTR sys_ioprio_set
|
|
PTR sys_ioprio_get /* 4315 */
|
|
PTR sys_utimensat
|
|
PTR sys_signalfd
|
|
PTR sys_ni_syscall /* was timerfd */
|
|
PTR sys_eventfd
|
|
PTR sys_fallocate /* 4320 */
|
|
PTR sys_timerfd_create
|
|
PTR sys_timerfd_gettime
|
|
PTR sys_timerfd_settime
|
|
PTR sys_signalfd4
|
|
PTR sys_eventfd2 /* 4325 */
|
|
PTR sys_epoll_create1
|
|
PTR sys_dup3
|
|
PTR sys_pipe2
|
|
PTR sys_inotify_init1
|
|
PTR sys_preadv /* 4330 */
|
|
PTR sys_pwritev
|
|
PTR sys_rt_tgsigqueueinfo
|
|
PTR sys_perf_event_open
|
|
PTR sys_accept4
|
|
PTR sys_recvmmsg /* 4335 */
|
|
PTR sys_fanotify_init
|
|
PTR sys_fanotify_mark
|
|
PTR sys_prlimit64
|
|
PTR sys_name_to_handle_at
|
|
PTR sys_open_by_handle_at /* 4340 */
|
|
PTR sys_clock_adjtime
|
|
PTR sys_syncfs
|
|
PTR sys_sendmmsg
|
|
PTR sys_setns
|
|
PTR sys_process_vm_readv /* 4345 */
|
|
PTR sys_process_vm_writev
|
|
PTR sys_kcmp
|
|
PTR sys_finit_module
|
|
PTR sys_sched_setattr
|
|
PTR sys_sched_getattr /* 4350 */
|
|
PTR sys_renameat2
|
|
PTR sys_seccomp
|
|
PTR sys_getrandom
|
|
PTR sys_memfd_create
|
|
PTR sys_bpf /* 4355 */
|
|
PTR sys_execveat
|
|
PTR sys_userfaultfd
|
|
PTR sys_membarrier
|
|
PTR sys_mlock2
|
|
PTR sys_copy_file_range /* 4360 */
|
|
PTR sys_preadv2
|
|
PTR sys_pwritev2
|
|
PTR sys_pkey_mprotect
|
|
PTR sys_pkey_alloc
|
|
PTR sys_pkey_free /* 4365 */
|
|
PTR sys_statx
|
|
PTR sys_rseq
|
|
PTR sys_io_pgetevents
|