/*
* 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 by Ralf Baechle
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
* Copyright (C) 2001 MIPS Technologies, Inc.
*/
#include <linux/config.h>
#include <asm/asm.h>
#include <linux/errno.h>
#include <asm/current.h>
#include <asm/mipsregs.h>
#include <asm/regdef.h>
#include <asm/stackframe.h>
#include <asm/unistd.h>
/* This duplicates the definition from <linux/sched.h> */
#define PT_TRACESYS 0x00000002 /* tracing system calls */
/* This duplicates the definition from <asm/signal.h> */
#define SIGILL 4 /* Illegal instruction (ANSI). */
#ifndef CONFIG_MIPS32_O32
/* No O32, so define handle_sys here */
#define handle_sysn32 handle_sys
#endif
.align 5
NESTED(handle_sysn32, PT_SIZE, sp)
#ifndef CONFIG_MIPS32_O32
.set noat
SAVE_SOME
STI
.set at
#endif
ld t1, PT_EPC(sp) # skip syscall on return
subu t0, v0, __NR_N32_Linux # check syscall number
sltiu t0, t0, __NR_N32_Linux_syscalls + 1
daddiu t1, 4 # skip to next instruction
beqz t0, not_n32_scall
sd t1, PT_EPC(sp)
dsll t0, v0, 3 # offset into table
ld t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0)
sd a3, PT_R26(sp) # save a3 for syscall restarting
ld t0, TASK_PTRACE($28) # syscall tracing enabled?
andi t0, PT_TRACESYS
bnez t0, trace_a_syscall
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
negu v0 # error
sd v0, PT_R0(sp) # set flag for syscall restarting
1: sd v0, PT_R2(sp) # result
ret_from_sys_call:
mfc0 t0, CP0_STATUS
xori t0, t0, 1
ori t0, t0, 1
mtc0 t0, CP0_STATUS
ld t2, TASK_NEED_RESCHED($28)
bnez t2, n32_reschedule
lw v0, TASK_SIGPENDING($28)
bnez v0, signal_return
restore_all:
RESTORE_SOME
RESTORE_SP
eret
/* Put this behind restore_all for the sake of the branch prediction. */
signal_return:
.type signal_return, @function
mfc0 t0, CP0_STATUS
ori t0, t0, 1
mtc0 t0, CP0_STATUS
SAVE_STATIC
move a0, zero
move a1, sp
jal do_signal
RESTORE_STATIC
b restore_all
n32_reschedule:
SAVE_STATIC
jal schedule
b ret_from_sys_call
/* ------------------------------------------------------------------------ */
trace_a_syscall:
SAVE_STATIC
sd t2,PT_R1(sp)
jal syscall_trace
ld t2,PT_R1(sp)
ld a0, PT_R4(sp) # Restore argument registers
ld a1, PT_R5(sp)
ld a2, PT_R6(sp)
ld a3, PT_R7(sp)
jalr t2
li t0, -EMAXERRNO - 1 # error?
sltu t0, t0, v0
sd t0, PT_R7(sp) # set error flag
beqz t0, 1f
negu v0 # error
sd v0, PT_R0(sp) # set flag for syscall restarting
1: sd v0, PT_R2(sp) # result
jal syscall_trace
j ret_from_sys_call
not_n32_scall:
/* This is not an n32 compatibility syscall, pass it on to
the n64 syscall handlers. */
j handle_sys64
END(handle_sysn32)
EXPORT(sysn32_call_table)
PTR sys_read /* 6000 */
PTR sys_write
PTR sys_open
PTR sys_close
PTR sys_newstat
PTR sys_newfstat /* 6005 */
PTR sys_newlstat
PTR sys_poll
PTR sys_lseek
PTR sys_mmap
PTR sys_mprotect /* 6010 */
PTR sys_munmap
PTR sys_brk
PTR sys32_rt_sigaction
PTR sys32_rt_sigprocmask
PTR sys32_ioctl /* 6015 */
PTR sys_pread
PTR sys_pwrite
PTR sys32_readv
PTR sys32_writev
PTR sys_access /* 6020 */
PTR sys_pipe
PTR sys32_select
PTR sys_sched_yield
PTR sys_mremap
PTR sys_msync /* 6025 */
PTR sys_mincore
PTR sys_madvise
PTR sys_shmget
PTR sys_shmat
PTR sys_shmctl /* 6030 */
PTR sys_dup
PTR sys_dup2
PTR sys_pause
PTR sys32_nanosleep
PTR sys32_getitimer /* 6035 */
PTR sys32_setitimer
PTR sys_alarm
PTR sys_getpid
PTR sys32_sendfile
PTR sys_socket /* 6040 */
PTR sys_connect
PTR sys_accept
PTR sys_sendto
PTR sys_recvfrom
PTR sys32_sendmsg /* 6045 */
PTR sys32_recvmsg
PTR sys_shutdown
PTR sys_bind
PTR sys_listen
PTR sys_getsockname /* 6050 */
PTR sys_getpeername
PTR sys_socketpair
PTR sys32_setsockopt
PTR sys_getsockopt
PTR sys_clone /* 6055 */
PTR sys_fork
PTR sys32_execve
PTR sys_exit
PTR sys32_wait4
PTR sys_kill /* 6060 */
PTR sys32_newuname
PTR sys_semget
PTR sys_semop
PTR sys_semctl
PTR sys_shmdt /* 6065 */
PTR sys_msgget
PTR sys_msgsnd
PTR sys_msgrcv
PTR sys_msgctl
PTR sys32_fcntl /* 6070 */
PTR sys_flock
PTR sys_fsync
PTR sys_fdatasync
PTR sys_truncate
PTR sys_ftruncate /* 6075 */
PTR sys32_getdents
PTR sys_getcwd
PTR sys_chdir
PTR sys_fchdir
PTR sys_rename /* 6080 */
PTR sys_mkdir
PTR sys_rmdir
PTR sys_creat
PTR sys_link
PTR sys_unlink /* 6085 */
PTR sys_symlink
PTR sys_readlink
PTR sys_chmod
PTR sys_fchmod
PTR sys_chown /* 6090 */
PTR sys_fchown
PTR sys_lchown
PTR sys_umask
PTR sys32_gettimeofday
PTR sys32_getrlimit /* 6095 */
PTR sys32_getrusage
PTR sys32_sysinfo
PTR sys32_times
PTR sys_ptrace
PTR sys_getuid /* 6100 */
PTR sys_syslog
PTR sys_getgid
PTR sys_setuid
PTR sys_setgid
PTR sys_geteuid /* 6105 */
PTR sys_getegid
PTR sys_setpgid
PTR sys_getppid
PTR sys_getpgrp
PTR sys_setsid /* 6110 */
PTR sys_setreuid
PTR sys_setregid
PTR sys_getgroups
PTR sys_setgroups
PTR sys_setresuid /* 6115 */
PTR sys_getresuid
PTR sys_setresgid
PTR sys_getresgid
PTR sys_getpgid
PTR sys_setfsuid /* 6120 */
PTR sys_setfsgid
PTR sys_getsid
PTR sys_capget
PTR sys_capset
PTR sys32_rt_sigpending /* 6125 */
PTR sys32_rt_sigtimedwait
PTR sys32_rt_sigqueueinfo
PTR sys32_rt_sigsuspend
PTR sys32_sigaltstack
PTR sys32_utime /* 6130 */
PTR sys_mknod
PTR sys32_personality
PTR sys_ustat
PTR sys32_statfs
PTR sys32_fstatfs /* 6135 */
PTR sys_sysfs
PTR sys_getpriority
PTR sys_setpriority
PTR sys_sched_setparam
PTR sys_sched_getparam /* 6140 */
PTR sys_sched_setscheduler
PTR sys_sched_getscheduler
PTR sys_sched_get_priority_max
PTR sys_sched_get_priority_min
PTR sys32_sched_rr_get_interval /* 6145 */
PTR sys_mlock
PTR sys_munlock
PTR sys_mlockall
PTR sys_munlockall
PTR sys_vhangup /* 6150 */
PTR sys_pivot_root
PTR sys32_sysctl
PTR sys_prctl
PTR sys32_adjtimex
PTR sys32_setrlimit /* 6155 */
PTR sys_chroot
PTR sys_sync
PTR sys_acct
PTR sys32_settimeofday
PTR sys_mount /* 6160 */
PTR sys_umount
PTR sys_swapon
PTR sys_swapoff
PTR sys_reboot
PTR sys_sethostname /* 6165 */
PTR sys_setdomainname
PTR sys_create_module
PTR sys_init_module
PTR sys_delete_module
PTR sys_get_kernel_syms /* 6170 */
PTR sys_query_module
PTR sys_quotactl
PTR sys_nfsservctl
PTR sys_ni_syscall /* res. for getpmsg */
PTR sys_ni_syscall /* 6175 for putpmsg */
PTR sys_ni_syscall /* res. for afs_syscall */
PTR sys_ni_syscall /* res. for security */
PTR sys_gettid
PTR sys32_readahead
PTR sys_setxattr /* 6180 */
PTR sys_lsetxattr
PTR sys_fsetxattr
PTR sys_getxattr
PTR sys_lgetxattr
PTR sys_fgetxattr /* 6185 */
PTR sys_listxattr
PTR sys_llistxattr
PTR sys_flistxattr
PTR sys_removexattr
PTR sys_lremovexattr /* 6190 */
PTR sys_fremovexattr
PTR sys_tkill
PTR sys_ni_syscall
PTR sys_ni_syscall /* res. for futex */
PTR sys_ni_syscall /* 6195 rs. sched_setaffinity */
PTR sys_ni_syscall /* res. f. sched_getaffinity */
PTR sys_cacheflush
PTR sys_cachectl
PTR sys_sysmips
PTR sys_ni_syscall /* 6200 */
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_ni_syscall /* 6205 */
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_ni_syscall /* 6210 */
PTR sysn32_rt_sigreturn
PTR sys_fcntl
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_semtimedop /* 6215 */
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_ni_syscall
PTR sys_sendfile64
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