mirror of
https://github.com/torvalds/linux.git
synced 2024-12-15 07:33:56 +00:00
474 lines
10 KiB
ArmAsm
474 lines
10 KiB
ArmAsm
/*
|
|
* 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/errno.h>
|
|
#include <asm/asm.h>
|
|
#include <asm/asmmacro.h>
|
|
#include <asm/irqflags.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
|
|
TRACE_IRQS_ON_RELOAD
|
|
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
|
|
|
|
move t0, s0
|
|
RESTORE_STATIC
|
|
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 t0
|
|
|
|
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
|
|
|
|
j n64_syscall_exit # continue like a normal syscall
|
|
|
|
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
|
|
PTR sys_inotify_init
|
|
PTR sys_inotify_add_watch
|
|
PTR sys_inotify_rm_watch /* 5245 */
|
|
PTR sys_migrate_pages
|
|
PTR sys_openat
|
|
PTR sys_mkdirat
|
|
PTR sys_mknodat
|
|
PTR sys_fchownat /* 5250 */
|
|
PTR sys_futimesat
|
|
PTR sys_newfstatat
|
|
PTR sys_unlinkat
|
|
PTR sys_renameat
|
|
PTR sys_linkat /* 5255 */
|
|
PTR sys_symlinkat
|
|
PTR sys_readlinkat
|
|
PTR sys_fchmodat
|
|
PTR sys_faccessat
|
|
PTR sys_pselect6 /* 5260 */
|
|
PTR sys_ppoll
|
|
PTR sys_unshare
|
|
PTR sys_splice
|
|
PTR sys_sync_file_range
|
|
PTR sys_tee /* 5265 */
|
|
PTR sys_vmsplice
|
|
PTR sys_move_pages
|
|
PTR sys_set_robust_list
|
|
PTR sys_get_robust_list
|
|
PTR sys_kexec_load /* 5270 */
|
|
PTR sys_getcpu
|
|
PTR sys_epoll_pwait
|