[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / mips / kernel / scall64-o32.S

/*
 * 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 - 2000, 2001 by Ralf Baechle
 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
 * Copyright (C) 2001 MIPS Technologies, Inc.
 * Copyright (C) 2004 Thiemo Seufer
 *
 * Hairy, the userspace application uses a different argument passing
 * convention than the kernel, so we have to translate things from o32
 * to ABI64 calling convention.  64-bit syscalls are also processed
 * here for now.
 */
#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/thread_info.h>
#include <asm/unistd.h>
#include <asm/sysmips.h>

	.align  5
NESTED(handle_sys, PT_SIZE, sp)
	.set	noat
	SAVE_SOME
	STI
	.set	at
	ld	t1, PT_EPC(sp)		# skip syscall on return

	dsubu	t0, v0, __NR_O32_Linux	# check syscall number
	sltiu	t0, t0, __NR_O32_Linux_syscalls + 1
	daddiu	t1, 4			# skip to next instruction
	sd	t1, PT_EPC(sp)
	beqz	t0, not_o32_scall
#if 0
 SAVE_ALL
 move a1, v0
 PRINT("Scall %ld\n")
 RESTORE_ALL
#endif

	/* We don't want to stumble over broken sign extensions from
	   userland. O32 does never use the upper half. */
	sll	a0, a0, 0
	sll	a1, a1, 0
	sll	a2, a2, 0
	sll	a3, a3, 0

	dsll	t0, v0, 3		# offset into table
	ld	t2, (sys_call_table - (__NR_O32_Linux * 8))(t0)

	sd	a3, PT_R26(sp)		# save a3 for syscall restarting

	/*
	 * More than four arguments.  Try to deal with it by copying the
	 * stack arguments from the user stack to the kernel stack.
	 * This Sucks (TM).
	 *
	 * We intentionally keep the kernel stack a little below the top of
	 * userspace so we don't have to do a slower byte accurate check here.
	 */
	ld	t0, PT_R29(sp)		# get old user stack pointer
	daddu	t1, t0, 32
	bltz	t1, bad_stack

1:	lw	a4, 16(t0)		# argument #5 from usp
2:	lw	a5, 20(t0)		# argument #6 from usp
3:	lw	a6, 24(t0)		# argument #7 from usp
4:	lw	a7, 28(t0)		# argument #8 from usp (for indirect syscalls)

	.section __ex_table,"a"
	PTR	1b, bad_stack
	PTR	2b, bad_stack
	PTR	3b, bad_stack
	PTR	4b, bad_stack
	.previous

	li	t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
	LONG_L	t0, TI_FLAGS($28)	# syscall tracing enabled?
	and	t0, t1, t0
	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

	dnegu	v0			# error
	sd	v0, PT_R0(sp)		# flag for syscall restarting
1:	sd	v0, PT_R2(sp)		# result

o32_syscall_exit:
	local_irq_disable		# make need_resched and
					# signals dont change between
					# sampling and return
	LONG_L	a2, TI_FLAGS($28)
	li	t0, _TIF_ALLWORK_MASK
	and	t0, a2, t0
	bnez	t0, o32_syscall_exit_work

	j	restore_partial

o32_syscall_exit_work:
	j	syscall_exit_work_partial

/* ------------------------------------------------------------------------ */

trace_a_syscall:
	SAVE_STATIC
	sd	a4, PT_R8(sp)		# Save argument registers
	sd	a5, PT_R9(sp)
	sd	a6, PT_R10(sp)
	sd	a7, PT_R11(sp)		# For indirect syscalls

	move	s0, t2			# Save syscall pointer
	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)
	ld	a6, PT_R10(sp)
	ld	a7, PT_R11(sp)		# For indirect syscalls
	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

/* ------------------------------------------------------------------------ */

	/*
	 * The stackpointer for a call with more than 4 arguments is bad.
	 */
bad_stack:
	dnegu	v0			# error
	sd	v0, PT_R0(sp)
	sd	v0, PT_R2(sp)
	li	t0, 1			# set error flag
	sd	t0, PT_R7(sp)
	j	o32_syscall_exit

not_o32_scall:
	/*
	 * This is not an o32 compatibility syscall, pass it on
	 * to the 64-bit syscall handlers.
	 */
#ifdef CONFIG_MIPS32_N32
	j	handle_sysn32
#else
	j	handle_sys64
#endif
	END(handle_sys)

LEAF(sys32_syscall)
	sltu	v0, a0, __NR_O32_Linux + __NR_O32_Linux_syscalls + 1
	beqz	v0, einval

	dsll	v0, a0, 3
	ld	t2, (sys_call_table - (__NR_O32_Linux * 8))(v0)

	li	v1, 4000		# indirect syscall number
	beq	a0, v1, einval		# do not recurse

	move	a0, a1			# shift argument registers
	move	a1, a2
	move	a2, a3
	move	a3, a4
	move	a4, a5
	move	a5, a6
	move	a6, a7
	sd	a0, PT_R4(sp)		# ... and push back a0 - a3, some
	sd	a1, PT_R5(sp)		# syscalls expect them there
	sd	a2, PT_R6(sp)
	sd	a3, PT_R7(sp)
	sd	a3, PT_R26(sp)		# update a3 for syscall restarting
	jr	t2
	/* Unreached */

einval:	li	v0, -EINVAL
	jr	ra
	END(sys32_syscall)

	.align	3
	.type	sys_call_table,@object
sys_call_table:
	PTR	sys32_syscall			/* 4000 */
	PTR	sys_exit
	PTR	sys_fork
	PTR	sys_read
	PTR	sys_write
	PTR	sys_open			/* 4005 */
	PTR	sys_close
	PTR	sys_waitpid
	PTR	sys_creat
	PTR	sys_link
	PTR	sys_unlink			/* 4010 */
	PTR	sys32_execve
	PTR	sys_chdir
	PTR	compat_sys_time
	PTR	sys_mknod
	PTR	sys_chmod			/* 4015 */
	PTR	sys_lchown
	PTR	sys_ni_syscall
	PTR	sys_ni_syscall			/* was sys_stat */
	PTR	sys_lseek
	PTR	sys_getpid			/* 4020 */
	PTR	sys_mount
	PTR	sys_oldumount
	PTR	sys_setuid
	PTR	sys_getuid
	PTR	compat_sys_stime		/* 4025 */
	PTR	sys32_ptrace
	PTR	sys_alarm
	PTR	sys_ni_syscall			/* was sys_fstat */
	PTR	sys_pause
	PTR	compat_sys_utime		/* 4030 */
	PTR	sys_ni_syscall
	PTR	sys_ni_syscall
	PTR	sys_access
	PTR	sys_nice
	PTR	sys_ni_syscall			/* 4035 */
	PTR	sys_sync
	PTR	sys_kill
	PTR	sys_rename
	PTR	sys_mkdir
	PTR	sys_rmdir			/* 4040 */
	PTR	sys_dup
	PTR	sys_pipe
	PTR	compat_sys_times
	PTR	sys_ni_syscall
	PTR	sys_brk				/* 4045 */
	PTR	sys_setgid
	PTR	sys_getgid
	PTR	sys_ni_syscall			/* was signal	2 */
	PTR	sys_geteuid
	PTR	sys_getegid			/* 4050 */
	PTR	sys_acct
	PTR	sys_umount
	PTR	sys_ni_syscall
	PTR	compat_sys_ioctl
	PTR	compat_sys_fcntl		/* 4055 */
	PTR	sys_ni_syscall
	PTR	sys_setpgid
	PTR	sys_ni_syscall
	PTR	sys_olduname
	PTR	sys_umask			/* 4060 */
	PTR	sys_chroot
	PTR	sys32_ustat
	PTR	sys_dup2
	PTR	sys_getppid
	PTR	sys_getpgrp			/* 4065 */
	PTR	sys_setsid
	PTR	sys32_sigaction
	PTR	sys_sgetmask
	PTR	sys_ssetmask
	PTR	sys_setreuid			/* 4070 */
	PTR	sys_setregid
	PTR	sys32_sigsuspend
	PTR	compat_sys_sigpending
	PTR	sys_sethostname
	PTR	compat_sys_setrlimit		/* 4075 */
	PTR	compat_sys_getrlimit
	PTR	compat_sys_getrusage
	PTR	sys32_gettimeofday
	PTR	sys32_settimeofday
	PTR	sys_getgroups			/* 4080 */
	PTR	sys_setgroups
	PTR	sys_ni_syscall			/* old_select */
	PTR	sys_symlink
	PTR	sys_ni_syscall			/* was sys_lstat */
	PTR	sys_readlink			/* 4085 */
	PTR	sys_uselib
	PTR	sys_swapon
	PTR	sys_reboot
	PTR	sys32_readdir
	PTR	old_mmap			/* 4090 */
	PTR	sys_munmap
	PTR	sys_truncate
	PTR	sys_ftruncate
	PTR	sys_fchmod
	PTR	sys_fchown			/* 4095 */
	PTR	sys_getpriority
	PTR	sys_setpriority
	PTR	sys_ni_syscall
	PTR	compat_sys_statfs
	PTR	compat_sys_fstatfs		/* 4100 */
	PTR	sys_ni_syscall			/* sys_ioperm */
	PTR	sys32_socketcall
	PTR	sys_syslog
	PTR	compat_sys_setitimer
	PTR	compat_sys_getitimer		/* 4105 */
	PTR	compat_sys_newstat
	PTR	compat_sys_newlstat
	PTR	compat_sys_newfstat
	PTR	sys_uname
	PTR	sys_ni_syscall			/* sys_ioperm  *//* 4110 */
	PTR	sys_vhangup
	PTR	sys_ni_syscall			/* was sys_idle	 */
	PTR	sys_ni_syscall			/* sys_vm86 */
	PTR	sys32_wait4
	PTR	sys_swapoff			/* 4115 */
	PTR	sys32_sysinfo
	PTR	sys32_ipc
	PTR	sys_fsync
	PTR	sys32_sigreturn
	PTR	sys_clone			/* 4120 */
	PTR	sys_setdomainname
	PTR	sys32_newuname
	PTR	sys_ni_syscall			/* sys_modify_ldt */
	PTR	sys32_adjtimex
	PTR	sys_mprotect			/* 4125 */
	PTR	compat_sys_sigprocmask
	PTR	sys_ni_syscall			/* was creat_module */
	PTR	sys_init_module
	PTR	sys_delete_module
	PTR	sys_ni_syscall			/* 4130, get_kernel_syms */
	PTR	sys_quotactl
	PTR	sys_getpgid
	PTR	sys_fchdir
	PTR	sys_bdflush
	PTR	sys_sysfs			/* 4135 */
	PTR	sys32_personality
	PTR	sys_ni_syscall	 		/* for afs_syscall */
	PTR	sys_setfsuid
	PTR	sys_setfsgid
	PTR	sys32_llseek			/* 4140 */
	PTR	sys32_getdents
	PTR	compat_sys_select
	PTR	sys_flock
	PTR	sys_msync
	PTR	compat_sys_readv		/* 4145 */
	PTR	compat_sys_writev
	PTR	sys_cacheflush
	PTR	sys_cachectl
	PTR	sys_sysmips
	PTR	sys_ni_syscall			/* 4150 */
	PTR	sys_getsid
	PTR	sys_fdatasync
	PTR	sys32_sysctl
	PTR	sys_mlock
	PTR	sys_munlock			/* 4155 */
	PTR	sys_mlockall
	PTR	sys_munlockall
	PTR	sys_sched_setparam
	PTR	sys_sched_getparam
	PTR	sys_sched_setscheduler 		/* 4160 */
	PTR	sys_sched_getscheduler
	PTR	sys_sched_yield
	PTR	sys_sched_get_priority_max
	PTR	sys_sched_get_priority_min
	PTR	sys32_sched_rr_get_interval 	/* 4165 */
	PTR	compat_sys_nanosleep
	PTR	sys_mremap
	PTR	sys_accept
	PTR	sys_bind
	PTR	sys_connect			/* 4170 */
	PTR	sys_getpeername
	PTR	sys_getsockname
	PTR	sys_getsockopt
	PTR	sys_listen
	PTR	sys_recv			/* 4175 */
	PTR	sys_recvfrom
	PTR	compat_sys_recvmsg
	PTR	sys_send
	PTR	compat_sys_sendmsg
	PTR	sys_sendto			/* 4180 */
	PTR	compat_sys_setsockopt
	PTR	sys_shutdown
	PTR	sys_socket
	PTR	sys_socketpair
	PTR	sys_setresuid			/* 4185 */
	PTR	sys_getresuid
	PTR	sys_ni_syscall			/* was query_module */
	PTR	sys_poll
	PTR	sys_nfsservctl
	PTR	sys_setresgid			/* 4190 */
	PTR	sys_getresgid
	PTR	sys_prctl
	PTR	sys32_rt_sigreturn
	PTR	sys32_rt_sigaction
	PTR	sys32_rt_sigprocmask 		/* 4195 */
	PTR	sys32_rt_sigpending
	PTR	compat_sys_rt_sigtimedwait
	PTR	sys32_rt_sigqueueinfo
	PTR	sys32_rt_sigsuspend
	PTR	sys32_pread			/* 4200 */
	PTR	sys32_pwrite
	PTR	sys_chown
	PTR	sys_getcwd
	PTR	sys_capget
	PTR	sys_capset			/* 4205 */
	PTR	sys32_sigaltstack
	PTR	sys32_sendfile
	PTR	sys_ni_syscall
	PTR	sys_ni_syscall
	PTR	sys32_mmap2			/* 4210 */
	PTR	sys32_truncate64
	PTR	sys32_ftruncate64
	PTR	sys_newstat
	PTR	sys_newlstat
	PTR	sys_newfstat			/* 4215 */
	PTR	sys_pivot_root
	PTR	sys_mincore
	PTR	sys_madvise
	PTR	sys_getdents64
	PTR	compat_sys_fcntl64		/* 4220 */
	PTR	sys_ni_syscall
	PTR	sys_gettid
	PTR	sys32_readahead
	PTR	sys_setxattr
	PTR	sys_lsetxattr			/* 4225 */
	PTR	sys_fsetxattr
	PTR	sys_getxattr
	PTR	sys_lgetxattr
	PTR	sys_fgetxattr
	PTR	sys_listxattr			/* 4230 */
	PTR	sys_llistxattr
	PTR	sys_flistxattr
	PTR	sys_removexattr
	PTR	sys_lremovexattr
	PTR	sys_fremovexattr		/* 4235 */
	PTR	sys_tkill
	PTR	sys_sendfile64
	PTR	compat_sys_futex
	PTR	compat_sys_sched_setaffinity
	PTR	compat_sys_sched_getaffinity	/* 4240 */
	PTR	sys_io_setup
	PTR	sys_io_destroy
	PTR	sys_io_getevents
	PTR	sys_io_submit
	PTR	sys_io_cancel			/* 4245 */
	PTR	sys_exit_group
	PTR	sys_lookup_dcookie
	PTR	sys_epoll_create
	PTR	sys_epoll_ctl
	PTR	sys_epoll_wait			/* 4250 */
	PTR	sys_remap_file_pages
	PTR	sys_set_tid_address
	PTR	sys_restart_syscall
	PTR	sys_fadvise64_64
	PTR	compat_sys_statfs64		/* 4255 */
	PTR	compat_sys_fstatfs64
	PTR	sys_timer_create
	PTR	compat_sys_timer_settime
	PTR	compat_sys_timer_gettime
	PTR	sys_timer_getoverrun		/* 4260 */
	PTR	sys_timer_delete
	PTR	compat_sys_clock_settime
	PTR	compat_sys_clock_gettime
	PTR	compat_sys_clock_getres
	PTR	compat_sys_clock_nanosleep	/* 4265 */
	PTR	sys_tgkill
	PTR	compat_sys_utimes
	PTR	sys_ni_syscall			/* sys_mbind */
	PTR	sys_ni_syscall			/* sys_get_mempolicy */
	PTR	sys_ni_syscall			/* 4270 sys_set_mempolicy */
	PTR	compat_sys_mq_open
	PTR	sys_mq_unlink
	PTR	compat_sys_mq_timedsend
	PTR	compat_sys_mq_timedreceive
	PTR	compat_sys_mq_notify		/* 4275 */
	PTR	compat_sys_mq_getsetattr
	PTR	sys_ni_syscall			/* sys_vserver */
	PTR	sys_waitid
	PTR	sys_ni_syscall			/* available, was setaltroot */
	PTR	sys_add_key			/* 4280 */
	PTR	sys_request_key
	PTR	sys_keyctl
	.size	sys_call_table,.-sys_call_table
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 1995 - 2000, 2001 by Ralf Baechle
	7	* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
	8	* Copyright (C) 2001 MIPS Technologies, Inc.
	9	* Copyright (C) 2004 Thiemo Seufer
	10	*
	11	* Hairy, the userspace application uses a different argument passing
	12	* convention than the kernel, so we have to translate things from o32
	13	* to ABI64 calling convention. 64-bit syscalls are also processed
	14	* here for now.
	15	*/
	16	#include <linux/config.h>
	17	#include <linux/errno.h>
	18	#include <asm/asm.h>
	19	#include <asm/asmmacro.h>
	20	#include <asm/mipsregs.h>
	21	#include <asm/regdef.h>
	22	#include <asm/stackframe.h>
	23	#include <asm/thread_info.h>
	24	#include <asm/unistd.h>
	25	#include <asm/sysmips.h>
	26
	27	.align 5
	28	NESTED(handle_sys, PT_SIZE, sp)
	29	.set noat
	30	SAVE_SOME
	31	STI
	32	.set at
	33	ld t1, PT_EPC(sp) # skip syscall on return
	34
	35	dsubu t0, v0, __NR_O32_Linux # check syscall number
	36	sltiu t0, t0, __NR_O32_Linux_syscalls + 1
	37	daddiu t1, 4 # skip to next instruction
	38	sd t1, PT_EPC(sp)
	39	beqz t0, not_o32_scall
	40	#if 0
	41	SAVE_ALL
	42	move a1, v0
	43	PRINT("Scall %ld\n")
	44	RESTORE_ALL
	45	#endif
	46
	47	/* We don't want to stumble over broken sign extensions from
	48	userland. O32 does never use the upper half. */
	49	sll a0, a0, 0
	50	sll a1, a1, 0
	51	sll a2, a2, 0
	52	sll a3, a3, 0
	53
	54	dsll t0, v0, 3 # offset into table
	55	ld t2, (sys_call_table - (__NR_O32_Linux * 8))(t0)
	56
	57	sd a3, PT_R26(sp) # save a3 for syscall restarting
	58
	59	/*
	60	* More than four arguments. Try to deal with it by copying the
	61	* stack arguments from the user stack to the kernel stack.
	62	* This Sucks (TM).
	63	*
	64	* We intentionally keep the kernel stack a little below the top of
65	* userspace so we don't have to do a slower byte accurate check here.
66	*/
67	ld t0, PT_R29(sp) # get old user stack pointer
68	daddu t1, t0, 32
69	bltz t1, bad_stack
70
71	1: lw a4, 16(t0) # argument #5 from usp
72	2: lw a5, 20(t0) # argument #6 from usp
73	3: lw a6, 24(t0) # argument #7 from usp
74	4: lw a7, 28(t0) # argument #8 from usp (for indirect syscalls)
75
76	.section __ex_table,"a"
77	PTR 1b, bad_stack
78	PTR 2b, bad_stack
79	PTR 3b, bad_stack
80	PTR 4b, bad_stack
81	.previous
82
83	li t1, _TIF_SYSCALL_TRACE \| _TIF_SYSCALL_AUDIT
84	LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
85	and t0, t1, t0
86	bnez t0, trace_a_syscall
87
88	jalr t2 # Do The Real Thing (TM)
89
90	li t0, -EMAXERRNO - 1 # error?
91	sltu t0, t0, v0
92	sd t0, PT_R7(sp) # set error flag
93	beqz t0, 1f
94
95	dnegu v0 # error
96	sd v0, PT_R0(sp) # flag for syscall restarting
97	1: sd v0, PT_R2(sp) # result
98
99	o32_syscall_exit:
100	local_irq_disable # make need_resched and
101	# signals dont change between
102	# sampling and return
103	LONG_L a2, TI_FLAGS($28)
104	li t0, _TIF_ALLWORK_MASK
105	and t0, a2, t0
106	bnez t0, o32_syscall_exit_work
107
108	j restore_partial
109
110	o32_syscall_exit_work:
111	j syscall_exit_work_partial
112
113	/* ------------------------------------------------------------------------ */
114
115	trace_a_syscall:
116	SAVE_STATIC
117	sd a4, PT_R8(sp) # Save argument registers
118	sd a5, PT_R9(sp)
119	sd a6, PT_R10(sp)
120	sd a7, PT_R11(sp) # For indirect syscalls
121
122	move s0, t2 # Save syscall pointer
123	move a0, sp
124	li a1, 0
125	jal do_syscall_trace
126
127	ld a0, PT_R4(sp) # Restore argument registers
128	ld a1, PT_R5(sp)
129	ld a2, PT_R6(sp)
130	ld a3, PT_R7(sp)
131	ld a4, PT_R8(sp)
132	ld a5, PT_R9(sp)
133	ld a6, PT_R10(sp)
134	ld a7, PT_R11(sp) # For indirect syscalls
135	jalr s0
136
137	li t0, -EMAXERRNO - 1 # error?
138	sltu t0, t0, v0
139	sd t0, PT_R7(sp) # set error flag
140	beqz t0, 1f
141
142	dnegu v0 # error
143	sd v0, PT_R0(sp) # set flag for syscall restarting
144	1: sd v0, PT_R2(sp) # result
145
146	j syscall_exit
147
148	/* ------------------------------------------------------------------------ */
149
150	/*
151	* The stackpointer for a call with more than 4 arguments is bad.
152	*/
153	bad_stack:
154	dnegu v0 # error
155	sd v0, PT_R0(sp)
156	sd v0, PT_R2(sp)
157	li t0, 1 # set error flag
158	sd t0, PT_R7(sp)
159	j o32_syscall_exit
160
161	not_o32_scall:
162	/*
163	* This is not an o32 compatibility syscall, pass it on
164	* to the 64-bit syscall handlers.
165	*/
166	#ifdef CONFIG_MIPS32_N32
167	j handle_sysn32
168	#else
169	j handle_sys64
170	#endif
171	END(handle_sys)
172
173	LEAF(sys32_syscall)
174	sltu v0, a0, __NR_O32_Linux + __NR_O32_Linux_syscalls + 1
175	beqz v0, einval
176
177	dsll v0, a0, 3
178	ld t2, (sys_call_table - (__NR_O32_Linux * 8))(v0)
179
180	li v1, 4000 # indirect syscall number
181	beq a0, v1, einval # do not recurse
182
183	move a0, a1 # shift argument registers
184	move a1, a2
185	move a2, a3
186	move a3, a4
187	move a4, a5
188	move a5, a6
189	move a6, a7
190	sd a0, PT_R4(sp) # ... and push back a0 - a3, some
191	sd a1, PT_R5(sp) # syscalls expect them there
192	sd a2, PT_R6(sp)
193	sd a3, PT_R7(sp)
194	sd a3, PT_R26(sp) # update a3 for syscall restarting
195	jr t2
196	/* Unreached */
197
198	einval: li v0, -EINVAL
199	jr ra
200	END(sys32_syscall)
201
202	.align 3
203	.type sys_call_table,@object
204	sys_call_table:
205	PTR sys32_syscall /* 4000 */
206	PTR sys_exit
207	PTR sys_fork
208	PTR sys_read
209	PTR sys_write
210	PTR sys_open /* 4005 */
211	PTR sys_close
212	PTR sys_waitpid
213	PTR sys_creat
214	PTR sys_link
215	PTR sys_unlink /* 4010 */
216	PTR sys32_execve
217	PTR sys_chdir
218	PTR compat_sys_time
219	PTR sys_mknod
220	PTR sys_chmod /* 4015 */
221	PTR sys_lchown
222	PTR sys_ni_syscall
223	PTR sys_ni_syscall /* was sys_stat */
224	PTR sys_lseek
225	PTR sys_getpid /* 4020 */
226	PTR sys_mount
227	PTR sys_oldumount
228	PTR sys_setuid
229	PTR sys_getuid
230	PTR compat_sys_stime /* 4025 */
231	PTR sys32_ptrace
232	PTR sys_alarm
233	PTR sys_ni_syscall /* was sys_fstat */
234	PTR sys_pause
235	PTR compat_sys_utime /* 4030 */
236	PTR sys_ni_syscall
237	PTR sys_ni_syscall
238	PTR sys_access
239	PTR sys_nice
240	PTR sys_ni_syscall /* 4035 */
241	PTR sys_sync
242	PTR sys_kill
243	PTR sys_rename
244	PTR sys_mkdir
245	PTR sys_rmdir /* 4040 */
246	PTR sys_dup
247	PTR sys_pipe
248	PTR compat_sys_times
249	PTR sys_ni_syscall
250	PTR sys_brk /* 4045 */
251	PTR sys_setgid
252	PTR sys_getgid
253	PTR sys_ni_syscall /* was signal 2 */
254	PTR sys_geteuid
255	PTR sys_getegid /* 4050 */
256	PTR sys_acct
257	PTR sys_umount
258	PTR sys_ni_syscall
259	PTR compat_sys_ioctl
260	PTR compat_sys_fcntl /* 4055 */
261	PTR sys_ni_syscall
262	PTR sys_setpgid
263	PTR sys_ni_syscall
264	PTR sys_olduname
265	PTR sys_umask /* 4060 */
266	PTR sys_chroot
267	PTR sys32_ustat
268	PTR sys_dup2
269	PTR sys_getppid
270	PTR sys_getpgrp /* 4065 */
271	PTR sys_setsid
272	PTR sys32_sigaction
273	PTR sys_sgetmask
274	PTR sys_ssetmask
275	PTR sys_setreuid /* 4070 */
276	PTR sys_setregid
277	PTR sys32_sigsuspend
278	PTR compat_sys_sigpending
279	PTR sys_sethostname
280	PTR compat_sys_setrlimit /* 4075 */
281	PTR compat_sys_getrlimit
282	PTR compat_sys_getrusage
283	PTR sys32_gettimeofday
284	PTR sys32_settimeofday
285	PTR sys_getgroups /* 4080 */
286	PTR sys_setgroups
287	PTR sys_ni_syscall /* old_select */
288	PTR sys_symlink
289	PTR sys_ni_syscall /* was sys_lstat */
290	PTR sys_readlink /* 4085 */
291	PTR sys_uselib
292	PTR sys_swapon
293	PTR sys_reboot
294	PTR sys32_readdir
295	PTR old_mmap /* 4090 */
296	PTR sys_munmap
297	PTR sys_truncate
298	PTR sys_ftruncate
299	PTR sys_fchmod
300	PTR sys_fchown /* 4095 */
301	PTR sys_getpriority
302	PTR sys_setpriority
303	PTR sys_ni_syscall
304	PTR compat_sys_statfs
305	PTR compat_sys_fstatfs /* 4100 */
306	PTR sys_ni_syscall /* sys_ioperm */
307	PTR sys32_socketcall
308	PTR sys_syslog
309	PTR compat_sys_setitimer
310	PTR compat_sys_getitimer /* 4105 */
311	PTR compat_sys_newstat
312	PTR compat_sys_newlstat
313	PTR compat_sys_newfstat
314	PTR sys_uname
315	PTR sys_ni_syscall /* sys_ioperm // 4110 */
316	PTR sys_vhangup
317	PTR sys_ni_syscall /* was sys_idle */
318	PTR sys_ni_syscall /* sys_vm86 */
319	PTR sys32_wait4
320	PTR sys_swapoff /* 4115 */
321	PTR sys32_sysinfo
322	PTR sys32_ipc
323	PTR sys_fsync
324	PTR sys32_sigreturn
325	PTR sys_clone /* 4120 */
326	PTR sys_setdomainname
327	PTR sys32_newuname
328	PTR sys_ni_syscall /* sys_modify_ldt */
329	PTR sys32_adjtimex
330	PTR sys_mprotect /* 4125 */
331	PTR compat_sys_sigprocmask
332	PTR sys_ni_syscall /* was creat_module */
333	PTR sys_init_module
334	PTR sys_delete_module
335	PTR sys_ni_syscall /* 4130, get_kernel_syms */
336	PTR sys_quotactl
337	PTR sys_getpgid
338	PTR sys_fchdir
339	PTR sys_bdflush
340	PTR sys_sysfs /* 4135 */
341	PTR sys32_personality
342	PTR sys_ni_syscall /* for afs_syscall */
343	PTR sys_setfsuid
344	PTR sys_setfsgid
345	PTR sys32_llseek /* 4140 */
346	PTR sys32_getdents
347	PTR compat_sys_select
348	PTR sys_flock
349	PTR sys_msync
350	PTR compat_sys_readv /* 4145 */
351	PTR compat_sys_writev
352	PTR sys_cacheflush
353	PTR sys_cachectl
354	PTR sys_sysmips
355	PTR sys_ni_syscall /* 4150 */
356	PTR sys_getsid
357	PTR sys_fdatasync
358	PTR sys32_sysctl
359	PTR sys_mlock
360	PTR sys_munlock /* 4155 */
361	PTR sys_mlockall
362	PTR sys_munlockall
363	PTR sys_sched_setparam
364	PTR sys_sched_getparam
365	PTR sys_sched_setscheduler /* 4160 */
366	PTR sys_sched_getscheduler
367	PTR sys_sched_yield
368	PTR sys_sched_get_priority_max
369	PTR sys_sched_get_priority_min
370	PTR sys32_sched_rr_get_interval /* 4165 */
371	PTR compat_sys_nanosleep
372	PTR sys_mremap
373	PTR sys_accept
374	PTR sys_bind
375	PTR sys_connect /* 4170 */
376	PTR sys_getpeername
377	PTR sys_getsockname
378	PTR sys_getsockopt
379	PTR sys_listen
380	PTR sys_recv /* 4175 */
381	PTR sys_recvfrom
382	PTR compat_sys_recvmsg
383	PTR sys_send
384	PTR compat_sys_sendmsg
385	PTR sys_sendto /* 4180 */
386	PTR compat_sys_setsockopt
387	PTR sys_shutdown
388	PTR sys_socket
389	PTR sys_socketpair
390	PTR sys_setresuid /* 4185 */
391	PTR sys_getresuid
392	PTR sys_ni_syscall /* was query_module */
393	PTR sys_poll
394	PTR sys_nfsservctl
395	PTR sys_setresgid /* 4190 */
396	PTR sys_getresgid
397	PTR sys_prctl
398	PTR sys32_rt_sigreturn
399	PTR sys32_rt_sigaction
400	PTR sys32_rt_sigprocmask /* 4195 */
401	PTR sys32_rt_sigpending
402	PTR compat_sys_rt_sigtimedwait
403	PTR sys32_rt_sigqueueinfo
404	PTR sys32_rt_sigsuspend
405	PTR sys32_pread /* 4200 */
406	PTR sys32_pwrite
407	PTR sys_chown
408	PTR sys_getcwd
409	PTR sys_capget
410	PTR sys_capset /* 4205 */
411	PTR sys32_sigaltstack
412	PTR sys32_sendfile
413	PTR sys_ni_syscall
414	PTR sys_ni_syscall
415	PTR sys32_mmap2 /* 4210 */
416	PTR sys32_truncate64
417	PTR sys32_ftruncate64
418	PTR sys_newstat
419	PTR sys_newlstat
420	PTR sys_newfstat /* 4215 */
421	PTR sys_pivot_root
422	PTR sys_mincore
423	PTR sys_madvise
424	PTR sys_getdents64
425	PTR compat_sys_fcntl64 /* 4220 */
426	PTR sys_ni_syscall
427	PTR sys_gettid
428	PTR sys32_readahead
429	PTR sys_setxattr
430	PTR sys_lsetxattr /* 4225 */
431	PTR sys_fsetxattr
432	PTR sys_getxattr
433	PTR sys_lgetxattr
434	PTR sys_fgetxattr
435	PTR sys_listxattr /* 4230 */
436	PTR sys_llistxattr
437	PTR sys_flistxattr
438	PTR sys_removexattr
439	PTR sys_lremovexattr
440	PTR sys_fremovexattr /* 4235 */
441	PTR sys_tkill
442	PTR sys_sendfile64
443	PTR compat_sys_futex
444	PTR compat_sys_sched_setaffinity
445	PTR compat_sys_sched_getaffinity /* 4240 */
446	PTR sys_io_setup
447	PTR sys_io_destroy
448	PTR sys_io_getevents
449	PTR sys_io_submit
450	PTR sys_io_cancel /* 4245 */
451	PTR sys_exit_group
452	PTR sys_lookup_dcookie
453	PTR sys_epoll_create
454	PTR sys_epoll_ctl
455	PTR sys_epoll_wait /* 4250 */
456	PTR sys_remap_file_pages
457	PTR sys_set_tid_address
458	PTR sys_restart_syscall
459	PTR sys_fadvise64_64
460	PTR compat_sys_statfs64 /* 4255 */
461	PTR compat_sys_fstatfs64
462	PTR sys_timer_create
463	PTR compat_sys_timer_settime
464	PTR compat_sys_timer_gettime
465	PTR sys_timer_getoverrun /* 4260 */
466	PTR sys_timer_delete
467	PTR compat_sys_clock_settime
468	PTR compat_sys_clock_gettime
469	PTR compat_sys_clock_getres
470	PTR compat_sys_clock_nanosleep /* 4265 */
471	PTR sys_tgkill
472	PTR compat_sys_utimes
473	PTR sys_ni_syscall /* sys_mbind */
474	PTR sys_ni_syscall /* sys_get_mempolicy */
475	PTR sys_ni_syscall /* 4270 sys_set_mempolicy */
476	PTR compat_sys_mq_open
477	PTR sys_mq_unlink
478	PTR compat_sys_mq_timedsend
479	PTR compat_sys_mq_timedreceive
480	PTR compat_sys_mq_notify /* 4275 */
481	PTR compat_sys_mq_getsetattr
482	PTR sys_ni_syscall /* sys_vserver */
483	PTR sys_waitid
484	PTR sys_ni_syscall /* available, was setaltroot */
485	PTR sys_add_key /* 4280 */
486	PTR sys_request_key
487	PTR sys_keyctl
488	.size sys_call_table,.-sys_call_table