linux/arch/mips/kernel/scall64-n32.S

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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 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/thread_info.h>
#include <asm/unistd.h>
#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
TRACE_IRQS_ON_RELOAD
STI
.set at
#endif
dsubu t0, v0, __NR_N32_Linux # check syscall number
sltiu t0, t0, __NR_N32_Linux_syscalls + 1
#ifndef CONFIG_MIPS32_O32
ld t1, PT_EPC(sp) # skip syscall on return
daddiu t1, 4 # skip to next instruction
sd t1, PT_EPC(sp)
#endif
beqz t0, not_n32_scall
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
li t1, _TIF_WORK_SYSCALL_ENTRY
LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
and t0, t1, t0
bnez t0, n32_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
ld t1, PT_R2(sp) # syscall number
dnegu v0 # error
sd t1, PT_R0(sp) # save it for syscall restarting
1: sd v0, PT_R2(sp) # result
j syscall_exit_partial
/* ------------------------------------------------------------------------ */
n32_syscall_trace_entry:
SAVE_STATIC
move s0, t2
move a0, sp
daddiu a1, v0, __NR_N32_Linux
jal syscall_trace_enter
bltz v0, 2f # seccomp failed? Skip syscall
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
ld t1, PT_R2(sp) # syscall number
dnegu v0 # error
sd t1, PT_R0(sp) # save it for syscall restarting
1: sd v0, PT_R2(sp) # result
2: j syscall_exit
not_n32_scall:
/* This is not an n32 compatibility syscall, pass it on to
the n64 syscall handlers. */
j handle_sys64
END(handle_sysn32)
.type sysn32_call_table, @object
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_mips_mmap
PTR sys_mprotect /* 6010 */
PTR sys_munmap
PTR sys_brk
PTR compat_sys_rt_sigaction
PTR compat_sys_rt_sigprocmask
PTR compat_sys_ioctl /* 6015 */
PTR sys_pread64
PTR sys_pwrite64
PTR compat_sys_readv
PTR compat_sys_writev
PTR sys_access /* 6020 */
PTR sysm_pipe
PTR compat_sys_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 compat_sys_shmctl /* 6030 */
PTR sys_dup
PTR sys_dup2
PTR sys_pause
PTR compat_sys_nanosleep
PTR compat_sys_getitimer /* 6035 */
PTR compat_sys_setitimer
PTR sys_alarm
PTR sys_getpid
PTR compat_sys_sendfile
PTR sys_socket /* 6040 */
PTR sys_connect
PTR sys_accept
PTR sys_sendto
net/compat/wext: send different messages to compat tasks Wireless extensions have the unfortunate problem that events are multicast netlink messages, and are not independent of pointer size. Thus, currently 32-bit tasks on 64-bit platforms cannot properly receive events and fail with all kinds of strange problems, for instance wpa_supplicant never notices disassociations, due to the way the 64-bit event looks (to a 32-bit process), the fact that the address is all zeroes is lost, it thinks instead it is 00:00:00:00:01:00. The same problem existed with the ioctls, until David Miller fixed those some time ago in an heroic effort. A different problem caused by this is that we cannot send the ASSOCREQIE/ASSOCRESPIE events because sending them causes a 32-bit wpa_supplicant on a 64-bit system to overwrite its internal information, which is worse than it not getting the information at all -- so we currently resort to sending a custom string event that it then parses. This, however, has a severe size limitation we are frequently hitting with modern access points; this limitation would can be lifted after this patch by sending the correct binary, not custom, event. A similar problem apparently happens for some other netlink users on x86_64 with 32-bit tasks due to the alignment for 64-bit quantities. In order to fix these problems, I have implemented a way to send compat messages to tasks. When sending an event, we send the non-compat event data together with a compat event data in skb_shinfo(main_skb)->frag_list. Then, when the event is read from the socket, the netlink code makes sure to pass out only the skb that is compatible with the task. This approach was suggested by David Miller, my original approach required always sending two skbs but that had various small problems. To determine whether compat is needed or not, I have used the MSG_CMSG_COMPAT flag, and adjusted the call path for recv and recvfrom to include it, even if those calls do not have a cmsg parameter. I have not solved one small part of the problem, and I don't think it is necessary to: if a 32-bit application uses read() rather than any form of recvmsg() it will still get the wrong (64-bit) event. However, neither do applications actually do this, nor would it be a regression. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-01 11:26:02 +00:00
PTR compat_sys_recvfrom
PTR compat_sys_sendmsg /* 6045 */
PTR compat_sys_recvmsg
PTR sys_shutdown
PTR sys_bind
PTR sys_listen
PTR sys_getsockname /* 6050 */
PTR sys_getpeername
PTR sys_socketpair
PTR compat_sys_setsockopt
PTR sys_getsockopt
PTR __sys_clone /* 6055 */
PTR __sys_fork
PTR compat_sys_execve
PTR sys_exit
PTR compat_sys_wait4
PTR sys_kill /* 6060 */
PTR sys_newuname
PTR sys_semget
PTR sys_semop
PTR compat_sys_semctl
PTR sys_shmdt /* 6065 */
PTR sys_msgget
PTR compat_sys_msgsnd
PTR compat_sys_msgrcv
PTR compat_sys_msgctl
PTR compat_sys_fcntl /* 6070 */
PTR sys_flock
PTR sys_fsync
PTR sys_fdatasync
PTR sys_truncate
PTR sys_ftruncate /* 6075 */
PTR compat_sys_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 compat_sys_gettimeofday
PTR compat_sys_getrlimit /* 6095 */
PTR compat_sys_getrusage
PTR compat_sys_sysinfo
PTR compat_sys_times
PTR compat_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 compat_sys_rt_sigpending /* 6125 */
PTR compat_sys_rt_sigtimedwait
PTR compat_sys_rt_sigqueueinfo
PTR compat_sys_rt_sigsuspend
PTR compat_sys_sigaltstack
PTR compat_sys_utime /* 6130 */
PTR sys_mknod
PTR sys_32_personality
PTR compat_sys_ustat
PTR compat_sys_statfs
PTR compat_sys_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 compat_sys_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 compat_sys_sysctl
PTR sys_prctl
PTR compat_sys_adjtimex
PTR compat_sys_setrlimit /* 6155 */
PTR sys_chroot
PTR sys_sync
PTR sys_acct
PTR compat_sys_settimeofday
PTR compat_sys_mount /* 6160 */
PTR sys_umount
PTR sys_swapon
PTR sys_swapoff
PTR sys_reboot
PTR sys_sethostname /* 6165 */
PTR sys_setdomainname
PTR sys_ni_syscall /* was create_module */
PTR sys_init_module
PTR sys_delete_module
PTR sys_ni_syscall /* 6170, was get_kernel_syms */
PTR sys_ni_syscall /* was query_module */
PTR sys_quotactl
PTR sys_ni_syscall /* was 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 sys_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 compat_sys_futex
PTR compat_sys_sched_setaffinity /* 6195 */
PTR compat_sys_sched_getaffinity
PTR sys_cacheflush
PTR sys_cachectl
PTR sys_sysmips
PTR compat_sys_io_setup /* 6200 */
PTR sys_io_destroy
PTR compat_sys_io_getevents
PTR compat_sys_io_submit
PTR sys_io_cancel
PTR sys_exit_group /* 6205 */
PTR sys_lookup_dcookie
PTR sys_epoll_create
PTR sys_epoll_ctl
PTR sys_epoll_wait
PTR sys_remap_file_pages /* 6210 */
PTR sysn32_rt_sigreturn
PTR compat_sys_fcntl64
PTR sys_set_tid_address
PTR sys_restart_syscall
PTR compat_sys_semtimedop /* 6215 */
PTR sys_fadvise64_64
PTR compat_sys_statfs64
PTR compat_sys_fstatfs64
PTR sys_sendfile64
PTR compat_sys_timer_create /* 6220 */
PTR compat_sys_timer_settime
PTR compat_sys_timer_gettime
PTR sys_timer_getoverrun
PTR sys_timer_delete
PTR compat_sys_clock_settime /* 6225 */
PTR compat_sys_clock_gettime
PTR compat_sys_clock_getres
PTR compat_sys_clock_nanosleep
PTR sys_tgkill
PTR compat_sys_utimes /* 6230 */
PTR sys_ni_syscall /* sys_mbind */
PTR sys_ni_syscall /* sys_get_mempolicy */
PTR sys_ni_syscall /* sys_set_mempolicy */
PTR compat_sys_mq_open
PTR sys_mq_unlink /* 6235 */
PTR compat_sys_mq_timedsend
PTR compat_sys_mq_timedreceive
PTR compat_sys_mq_notify
PTR compat_sys_mq_getsetattr
PTR sys_ni_syscall /* 6240, sys_vserver */
PTR compat_sys_waitid
PTR sys_ni_syscall /* available, was setaltroot */
PTR sys_add_key
PTR sys_request_key
PTR sys_keyctl /* 6245 */
PTR sys_set_thread_area
PTR sys_inotify_init
PTR sys_inotify_add_watch
PTR sys_inotify_rm_watch
PTR sys_migrate_pages /* 6250 */
PTR sys_openat
PTR sys_mkdirat
PTR sys_mknodat
PTR sys_fchownat
PTR compat_sys_futimesat /* 6255 */
PTR sys_newfstatat
PTR sys_unlinkat
PTR sys_renameat
PTR sys_linkat
PTR sys_symlinkat /* 6260 */
PTR sys_readlinkat
PTR sys_fchmodat
PTR sys_faccessat
PTR compat_sys_pselect6
PTR compat_sys_ppoll /* 6265 */
PTR sys_unshare
PTR sys_splice
PTR sys_sync_file_range
PTR sys_tee
PTR compat_sys_vmsplice /* 6270 */
PTR sys_move_pages
PTR compat_sys_set_robust_list
PTR compat_sys_get_robust_list
PTR compat_sys_kexec_load
PTR sys_getcpu /* 6275 */
PTR compat_sys_epoll_pwait
PTR sys_ioprio_set
PTR sys_ioprio_get
PTR compat_sys_utimensat
PTR compat_sys_signalfd /* 6280 */
PTR sys_ni_syscall /* was timerfd */
PTR sys_eventfd
PTR sys_fallocate
PTR sys_timerfd_create
PTR compat_sys_timerfd_gettime /* 6285 */
PTR compat_sys_timerfd_settime
PTR compat_sys_signalfd4
PTR sys_eventfd2
PTR sys_epoll_create1
PTR sys_dup3 /* 6290 */
PTR sys_pipe2
PTR sys_inotify_init1
PTR compat_sys_preadv
PTR compat_sys_pwritev
PTR compat_sys_rt_tgsigqueueinfo /* 6295 */
perf: Do the big rename: Performance Counters -> Performance Events Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by: Stephane Eranian <eranian@google.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Paul Mackerras <paulus@samba.org> Reviewed-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 10:02:48 +00:00
PTR sys_perf_event_open
PTR sys_accept4
PTR compat_sys_recvmmsg
PTR sys_getdents64
PTR sys_fanotify_init /* 6300 */
PTR sys_fanotify_mark
PTR sys_prlimit64
PTR sys_name_to_handle_at
PTR sys_open_by_handle_at
PTR compat_sys_clock_adjtime /* 6305 */
PTR sys_syncfs
PTR compat_sys_sendmmsg
ns: Wire up the setns system call 32bit and 64bit on x86 are tested and working. The rest I have looked at closely and I can't find any problems. setns is an easy system call to wire up. It just takes two ints so I don't expect any weird architecture porting problems. While doing this I have noticed that we have some architectures that are very slow to get new system calls. cris seems to be the slowest where the last system calls wired up were preadv and pwritev. avr32 is weird in that recvmmsg was wired up but never declared in unistd.h. frv is behind with perf_event_open being the last syscall wired up. On h8300 the last system call wired up was epoll_wait. On m32r the last system call wired up was fallocate. mn10300 has recvmmsg as the last system call wired up. The rest seem to at least have syncfs wired up which was new in the 2.6.39. v2: Most of the architecture support added by Daniel Lezcano <dlezcano@fr.ibm.com> v3: ported to v2.6.36-rc4 by: Eric W. Biederman <ebiederm@xmission.com> v4: Moved wiring up of the system call to another patch v5: ported to v2.6.39-rc6 v6: rebased onto parisc-next and net-next to avoid syscall conflicts. v7: ported to Linus's latest post 2.6.39 tree. >  arch/blackfin/include/asm/unistd.h     |    3 ++- >  arch/blackfin/mach-common/entry.S      |    1 + Acked-by: Mike Frysinger <vapier@gentoo.org> Oh - ia64 wiring looks good. Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-28 02:28:27 +00:00
PTR sys_setns
PTR compat_sys_process_vm_readv
PTR compat_sys_process_vm_writev /* 6310 */
PTR sys_kcmp
PTR sys_finit_module
PTR sys_sched_setattr
PTR sys_sched_getattr
PTR sys_renameat2 /* 6315 */
.size sysn32_call_table,.-sysn32_call_table