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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02 by Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
* Copyright (C) 2001 MIPS Technologies, Inc.
*/
#include <linux/config.h>
#include <linux/errno.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/mipsregs.h>
#include <asm/regdef.h>
#include <asm/stackframe.h>
#include <asm/asm-offsets.h>
#include <asm/sysmips.h>
#include <asm/thread_info.h>
#include <asm/unistd.h>
#include <asm/war.h>
#ifndef CONFIG_BINFMT_ELF32
/* Neither O32 nor N32, so define handle_sys here */
#define handle_sys64 handle_sys
#endif
.align 5
NESTED(handle_sys64, PT_SIZE, sp)
#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
/*
* When 32-bit compatibility is configured scall_o32.S
* already did this.
*/
.set noat
SAVE_SOME
STI
.set at
#endif
dsubu t0, v0, __NR_64_Linux # check syscall number
sltiu t0, t0, __NR_64_Linux_syscalls + 1
#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
ld t1, PT_EPC(sp) # skip syscall on return
daddiu t1, 4 # skip to next instruction
sd t1, PT_EPC(sp)
#endif
beqz t0, illegal_syscall
dsll t0, v0, 3 # offset into table
ld t2, (sys_call_table - (__NR_64_Linux * 8))(t0)
# syscall routine
sd a3, PT_R26(sp) # save a3 for syscall restarting
li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
and t0, t1, t0
bnez t0, syscall_trace_entry
jalr t2 # Do The Real Thing (TM)
li t0, -EMAXERRNO - 1 # error?
sltu t0, t0, v0
sd t0, PT_R7(sp) # set error flag
beqz t0, 1f
dnegu v0 # error
sd v0, PT_R0(sp) # set flag for syscall
# restarting
1: sd v0, PT_R2(sp) # result
n64_syscall_exit:
local_irq_disable # make sure need_resched and
# signals dont change between
# sampling and return
LONG_L a2, TI_FLAGS($28) # current->work
li t0, _TIF_ALLWORK_MASK
and t0, a2, t0
bnez t0, n64_syscall_exit_work
j restore_partial
n64_syscall_exit_work:
j syscall_exit_work_partial
/* ------------------------------------------------------------------------ */
syscall_trace_entry:
SAVE_STATIC
move s0, t2
move a0, sp
li a1, 0
jal do_syscall_trace
ld a0, PT_R4(sp) # Restore argument registers
ld a1, PT_R5(sp)
ld a2, PT_R6(sp)
ld a3, PT_R7(sp)
ld a4, PT_R8(sp)
ld a5, PT_R9(sp)
jalr s0
li t0, -EMAXERRNO - 1 # error?
sltu t0, t0, v0
sd t0, PT_R7(sp) # set error flag
beqz t0, 1f
dnegu v0 # error
sd v0, PT_R0(sp) # set flag for syscall restarting
1: sd v0, PT_R2(sp) # result
j syscall_exit
illegal_syscall:
/* This also isn't a 64-bit syscall, throw an error. */
li v0, -ENOSYS # error
sd v0, PT_R2(sp)
li t0, 1 # set error flag
sd t0, PT_R7(sp)
j n64_syscall_exit
END(handle_sys64)
LEAF(mips_atomic_set)
andi v0, a1, 3 # must be word aligned
bnez v0, bad_alignment
LONG_L v1, TI_ADDR_LIMIT($28) # in legal address range?
LONG_ADDIU a0, a1, 4
or a0, a0, a1
and a0, a0, v1
bltz a0, bad_address
#ifdef CONFIG_CPU_HAS_LLSC
/* Ok, this is the ll/sc case. World is sane :-) */
1: ll v0, (a1)
move a0, a2
2: sc a0, (a1)
#if R10000_LLSC_WAR
beqzl a0, 1b
#else
beqz a0, 1b
#endif
.section __ex_table,"a"
PTR 1b, bad_stack
PTR 2b, bad_stack
.previous
#else
sw a1, 16(sp)
sw a2, 20(sp)
move a0, sp
move a2, a1
li a1, 1
jal do_page_fault
lw a1, 16(sp)
lw a2, 20(sp)
/*
* At this point the page should be readable and writable unless
* there was no more memory available.
*/
1: lw v0, (a1)
2: sw a2, (a1)
.section __ex_table,"a"
PTR 1b, no_mem
PTR 2b, no_mem
.previous
#endif
sd zero, PT_R7(sp) # success
sd v0, PT_R2(sp) # result
/* Success, so skip usual error handling garbage. */
li t0, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
LONG_L a2, TI_FLAGS($28) # syscall tracing enabled?
and t0, a2, t0
bnez t0, 1f
j n64_syscall_exit
1: SAVE_STATIC
move a0, sp
li a1, 1
jal do_syscall_trace
j syscall_exit
no_mem: li v0, -ENOMEM
jr ra
bad_address:
li v0, -EFAULT
jr ra
bad_alignment:
li v0, -EINVAL
jr ra
END(mips_atomic_set)
LEAF(sys_sysmips)
beq a0, MIPS_ATOMIC_SET, mips_atomic_set
j _sys_sysmips
END(sys_sysmips)
.align 3
sys_call_table:
PTR sys_read /* 5000 */
PTR sys_write
PTR sys_open
PTR sys_close
PTR sys_newstat
PTR sys_newfstat /* 5005 */
PTR sys_newlstat
PTR sys_poll
PTR sys_lseek
PTR old_mmap
PTR sys_mprotect /* 5010 */
PTR sys_munmap
PTR sys_brk
PTR sys_rt_sigaction
PTR sys_rt_sigprocmask
PTR sys_ioctl /* 5015 */
PTR sys_pread64
PTR sys_pwrite64
PTR sys_readv
PTR sys_writev
PTR sys_access /* 5020 */
PTR sys_pipe
PTR sys_select
PTR sys_sched_yield
PTR sys_mremap
PTR sys_msync /* 5025 */
PTR sys_mincore
PTR sys_madvise
PTR sys_shmget
PTR sys_shmat
PTR sys_shmctl /* 5030 */
PTR sys_dup
PTR sys_dup2
PTR sys_pause
PTR sys_nanosleep
PTR sys_getitimer /* 5035 */
PTR sys_setitimer
PTR sys_alarm
PTR sys_getpid
PTR sys_sendfile64
PTR sys_socket /* 5040 */
PTR sys_connect
PTR sys_accept
PTR sys_sendto
PTR sys_recvfrom
PTR sys_sendmsg /* 5045 */
PTR sys_recvmsg
PTR sys_shutdown
PTR sys_bind
PTR sys_listen
PTR sys_getsockname /* 5050 */
PTR sys_getpeername
PTR sys_socketpair
PTR sys_setsockopt
PTR sys_getsockopt
PTR sys_clone /* 5055 */
PTR sys_fork
PTR sys_execve
PTR sys_exit
PTR sys_wait4
PTR sys_kill /* 5060 */
PTR sys_newuname
PTR sys_semget
PTR sys_semop
PTR sys_semctl
PTR sys_shmdt /* 5065 */
PTR sys_msgget
PTR sys_msgsnd
PTR sys_msgrcv
PTR sys_msgctl
PTR sys_fcntl /* 5070 */
PTR sys_flock
PTR sys_fsync
PTR sys_fdatasync
PTR sys_truncate
PTR sys_ftruncate /* 5075 */
PTR sys_getdents
PTR sys_getcwd
PTR sys_chdir
PTR sys_fchdir
PTR sys_rename /* 5080 */
PTR sys_mkdir
PTR sys_rmdir
PTR sys_creat
PTR sys_link
PTR sys_unlink /* 5085 */
PTR sys_symlink
PTR sys_readlink
PTR sys_chmod
PTR sys_fchmod
PTR sys_chown /* 5090 */
PTR sys_fchown
PTR sys_lchown
PTR sys_umask
PTR sys_gettimeofday
PTR sys_getrlimit /* 5095 */
PTR sys_getrusage
PTR sys_sysinfo
PTR sys_times
PTR sys_ptrace
PTR sys_getuid /* 5100 */
PTR sys_syslog
PTR sys_getgid
PTR sys_setuid
PTR sys_setgid
PTR sys_geteuid /* 5105 */
PTR sys_getegid
PTR sys_setpgid
PTR sys_getppid
PTR sys_getpgrp
PTR sys_setsid /* 5110 */
PTR sys_setreuid
PTR sys_setregid
PTR sys_getgroups
PTR sys_setgroups
PTR sys_setresuid /* 5115 */
PTR sys_getresuid
PTR sys_setresgid
PTR sys_getresgid
PTR sys_getpgid
PTR sys_setfsuid /* 5120 */
PTR sys_setfsgid
PTR sys_getsid
PTR sys_capget
PTR sys_capset
PTR sys_rt_sigpending /* 5125 */
PTR sys_rt_sigtimedwait
PTR sys_rt_sigqueueinfo
PTR sys_rt_sigsuspend
PTR sys_sigaltstack
PTR sys_utime /* 5130 */
PTR sys_mknod
PTR sys_personality
PTR sys_ustat
PTR sys_statfs
PTR sys_fstatfs /* 5135 */
PTR sys_sysfs
PTR sys_getpriority
PTR sys_setpriority
PTR sys_sched_setparam
PTR sys_sched_getparam /* 5140 */
PTR sys_sched_setscheduler
PTR sys_sched_getscheduler
PTR sys_sched_get_priority_max
PTR sys_sched_get_priority_min
PTR sys_sched_rr_get_interval /* 5145 */
PTR sys_mlock
PTR sys_munlock
PTR sys_mlockall
PTR sys_munlockall
PTR sys_vhangup /* 5150 */
PTR sys_pivot_root
PTR sys_sysctl
PTR sys_prctl
PTR sys_adjtimex
PTR sys_setrlimit /* 5155 */
PTR sys_chroot
PTR sys_sync
PTR sys_acct
PTR sys_settimeofday
PTR sys_mount /* 5160 */
PTR sys_umount
PTR sys_swapon
PTR sys_swapoff
PTR sys_reboot
PTR sys_sethostname /* 5165 */
PTR sys_setdomainname
PTR sys_ni_syscall /* was create_module */
PTR sys_init_module
PTR sys_delete_module
PTR sys_ni_syscall /* 5170, was get_kernel_syms */
PTR sys_ni_syscall /* was query_module */
PTR sys_quotactl
PTR sys_nfsservctl
PTR sys_ni_syscall /* res. for getpmsg */
PTR sys_ni_syscall /* 5175 for putpmsg */
PTR sys_ni_syscall /* res. for afs_syscall */
PTR sys_ni_syscall /* res. for security */
PTR sys_gettid
PTR sys_readahead
PTR sys_setxattr /* 5180 */
PTR sys_lsetxattr
PTR sys_fsetxattr
PTR sys_getxattr
PTR sys_lgetxattr
PTR sys_fgetxattr /* 5185 */
PTR sys_listxattr
PTR sys_llistxattr
PTR sys_flistxattr
PTR sys_removexattr
PTR sys_lremovexattr /* 5190 */
PTR sys_fremovexattr
PTR sys_tkill
PTR sys_ni_syscall
PTR sys_futex
PTR sys_sched_setaffinity /* 5195 */
PTR sys_sched_getaffinity
PTR sys_cacheflush
PTR sys_cachectl
PTR sys_sysmips
PTR sys_io_setup /* 5200 */
PTR sys_io_destroy
PTR sys_io_getevents
PTR sys_io_submit
PTR sys_io_cancel
PTR sys_exit_group /* 5205 */
PTR sys_lookup_dcookie
PTR sys_epoll_create
PTR sys_epoll_ctl
PTR sys_epoll_wait
PTR sys_remap_file_pages /* 5210 */
PTR sys_rt_sigreturn
PTR sys_set_tid_address
PTR sys_restart_syscall
PTR sys_semtimedop
PTR sys_fadvise64_64 /* 5215 */
PTR sys_timer_create
PTR sys_timer_settime
PTR sys_timer_gettime
PTR sys_timer_getoverrun
PTR sys_timer_delete /* 5220 */
PTR sys_clock_settime
PTR sys_clock_gettime
PTR sys_clock_getres
PTR sys_clock_nanosleep
PTR sys_tgkill /* 5225 */
PTR sys_utimes
PTR sys_mbind
PTR sys_ni_syscall /* sys_get_mempolicy */
PTR sys_ni_syscall /* sys_set_mempolicy */
PTR sys_mq_open /* 5230 */
PTR sys_mq_unlink
PTR sys_mq_timedsend
PTR sys_mq_timedreceive
PTR sys_mq_notify
PTR sys_mq_getsetattr /* 5235 */
PTR sys_ni_syscall /* sys_vserver */
PTR sys_waitid
PTR sys_ni_syscall /* available, was setaltroot */
PTR sys_add_key
PTR sys_request_key /* 5240 */
PTR sys_keyctl
PTR sys_set_thread_area
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