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authorRussell King <rmk+kernel@armlinux.org.uk>2016-10-18 20:57:01 +0200
committerRussell King <rmk+kernel@armlinux.org.uk>2016-10-18 22:34:06 +0200
commit96a8fae0fe094b6a26a3ec88b2f097418f269cfe (patch)
tree611c87ac99ac3ee4407d4d37b6c77d5274e3c2e1 /arch/arm/tools
parentARM: remove indirection of asm/mach-types.h (diff)
downloadlinux-96a8fae0fe094b6a26a3ec88b2f097418f269cfe.tar.xz
linux-96a8fae0fe094b6a26a3ec88b2f097418f269cfe.zip
ARM: convert to generated system call tables
Convert ARM to use a similar mechanism to x86 to generate the unistd.h system call numbers and the various kernel system call tables. This means that rather than having to edit three places (asm/unistd.h for the total number of system calls, uapi/asm/unistd.h for the system call numbers, and arch/arm/kernel/calls.S for the call table) we have only one place to edit, making the process much more simple. The scripts have knowledge of the table padding requirements, so there's no need to worry about __NR_syscalls not fitting within the immediate constant field of ALU instructions anymore. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/tools')
-rw-r--r--arch/arm/tools/Makefile62
-rw-r--r--arch/arm/tools/syscall.tbl410
-rw-r--r--arch/arm/tools/syscallhdr.sh30
-rw-r--r--arch/arm/tools/syscallnr.sh33
-rw-r--r--arch/arm/tools/syscalltbl.sh21
5 files changed, 551 insertions, 5 deletions
diff --git a/arch/arm/tools/Makefile b/arch/arm/tools/Makefile
index bdf48e4949ad..92eb5c3b486c 100644
--- a/arch/arm/tools/Makefile
+++ b/arch/arm/tools/Makefile
@@ -6,17 +6,31 @@
gen := arch/$(ARCH)/include/generated
kapi := $(gen)/asm
+uapi := $(gen)/uapi/asm
+syshdr := $(srctree)/$(src)/syscallhdr.sh
+sysnr := $(srctree)/$(src)/syscallnr.sh
+systbl := $(srctree)/$(src)/syscalltbl.sh
+syscall := $(srctree)/$(src)/syscall.tbl
-kapi-hdrs-y := $(kapi)/mach-types.h
+gen-y := $(gen)/calls-oabi.S
+gen-y += $(gen)/calls-eabi.S
+kapi-hdrs-y := $(kapi)/unistd-nr.h
+kapi-hdrs-y += $(kapi)/mach-types.h
+uapi-hdrs-y := $(uapi)/unistd-common.h
+uapi-hdrs-y += $(uapi)/unistd-oabi.h
+uapi-hdrs-y += $(uapi)/unistd-eabi.h
-targets += $(addprefix ../../../,$(kapi-hdrs-y))
+targets += $(addprefix ../../../,$(gen-y) $(kapi-hdrs-y) $(uapi-hdrs-y))
-PHONY += kapi
+PHONY += kapi uapi
-kapi: $(kapi-hdrs-y)
+kapi: $(kapi-hdrs-y) $(gen-y)
+
+uapi: $(uapi-hdrs-y)
# Create output directory if not already present
-_dummy := $(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
+_dummy := $(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)') \
+ $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')
quiet_cmd_gen_mach = GEN $@
cmd_gen_mach = mkdir -p $(dir $@) && \
@@ -25,3 +39,41 @@ quiet_cmd_gen_mach = GEN $@
$(kapi)/mach-types.h: $(src)/gen-mach-types $(src)/mach-types FORCE
$(call if_changed,gen_mach)
+
+quiet_cmd_syshdr = SYSHDR $@
+ cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
+ '$(syshdr_abi_$(basetarget))' \
+ '$(syshdr_pfx_$(basetarget))' \
+ '__NR_SYSCALL_BASE'
+
+quiet_cmd_systbl = SYSTBL $@
+ cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
+ '$(systbl_abi_$(basetarget))'
+
+quiet_cmd_sysnr = SYSNR $@
+ cmd_sysnr = $(CONFIG_SHELL) '$(sysnr)' '$<' '$@' \
+ '$(syshdr_abi_$(basetarget))'
+
+syshdr_abi_unistd-common := common
+$(uapi)/unistd-common.h: $(syscall) $(syshdr) FORCE
+ $(call if_changed,syshdr)
+
+syshdr_abi_unistd-oabi := oabi
+$(uapi)/unistd-oabi.h: $(syscall) $(syshdr) FORCE
+ $(call if_changed,syshdr)
+
+syshdr_abi_unistd-eabi := eabi
+$(uapi)/unistd-eabi.h: $(syscall) $(syshdr) FORCE
+ $(call if_changed,syshdr)
+
+sysnr_abi_unistd-nr := common,oabi,eabi,compat
+$(kapi)/unistd-nr.h: $(syscall) $(sysnr) FORCE
+ $(call if_changed,sysnr)
+
+systbl_abi_calls-oabi := common,oabi
+$(gen)/calls-oabi.S: $(syscall) $(systbl) FORCE
+ $(call if_changed,systbl)
+
+systbl_abi_calls-eabi := common,eabi
+$(gen)/calls-eabi.S: $(syscall) $(systbl) FORCE
+ $(call if_changed,systbl)
diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl
new file mode 100644
index 000000000000..4eca42d791ce
--- /dev/null
+++ b/arch/arm/tools/syscall.tbl
@@ -0,0 +1,410 @@
+#
+# Linux system call numbers and entry vectors
+#
+# The format is:
+# <num> <abi> <name> [<entry point> [<oabi compat entry point>]]
+#
+# Where abi is:
+# common - for system calls shared between oabi and eabi (may have compat)
+# oabi - for oabi-only system calls (may have compat)
+# eabi - for eabi-only system calls
+#
+# For each syscall number, "common" is mutually exclusive with oabi and eabi
+#
+0 common restart_syscall sys_restart_syscall
+1 common exit sys_exit
+2 common fork sys_fork
+3 common read sys_read
+4 common write sys_write
+5 common open sys_open
+6 common close sys_close
+# 7 was sys_waitpid
+8 common creat sys_creat
+9 common link sys_link
+10 common unlink sys_unlink
+11 common execve sys_execve
+12 common chdir sys_chdir
+13 oabi time sys_time
+14 common mknod sys_mknod
+15 common chmod sys_chmod
+16 common lchown sys_lchown16
+# 17 was sys_break
+# 18 was sys_stat
+19 common lseek sys_lseek
+20 common getpid sys_getpid
+21 common mount sys_mount
+22 oabi umount sys_oldumount
+23 common setuid sys_setuid16
+24 common getuid sys_getuid16
+25 oabi stime sys_stime
+26 common ptrace sys_ptrace
+27 oabi alarm sys_alarm
+# 28 was sys_fstat
+29 common pause sys_pause
+30 oabi utime sys_utime
+# 31 was sys_stty
+# 32 was sys_gtty
+33 common access sys_access
+34 common nice sys_nice
+# 35 was sys_ftime
+36 common sync sys_sync
+37 common kill sys_kill
+38 common rename sys_rename
+39 common mkdir sys_mkdir
+40 common rmdir sys_rmdir
+41 common dup sys_dup
+42 common pipe sys_pipe
+43 common times sys_times
+# 44 was sys_prof
+45 common brk sys_brk
+46 common setgid sys_setgid16
+47 common getgid sys_getgid16
+# 48 was sys_signal
+49 common geteuid sys_geteuid16
+50 common getegid sys_getegid16
+51 common acct sys_acct
+52 common umount2 sys_umount
+# 53 was sys_lock
+54 common ioctl sys_ioctl
+55 common fcntl sys_fcntl
+# 56 was sys_mpx
+57 common setpgid sys_setpgid
+# 58 was sys_ulimit
+# 59 was sys_olduname
+60 common umask sys_umask
+61 common chroot sys_chroot
+62 common ustat sys_ustat
+63 common dup2 sys_dup2
+64 common getppid sys_getppid
+65 common getpgrp sys_getpgrp
+66 common setsid sys_setsid
+67 common sigaction sys_sigaction
+# 68 was sys_sgetmask
+# 69 was sys_ssetmask
+70 common setreuid sys_setreuid16
+71 common setregid sys_setregid16
+72 common sigsuspend sys_sigsuspend
+73 common sigpending sys_sigpending
+74 common sethostname sys_sethostname
+75 common setrlimit sys_setrlimit
+# Back compat 2GB limited rlimit
+76 oabi getrlimit sys_old_getrlimit
+77 common getrusage sys_getrusage
+78 common gettimeofday sys_gettimeofday
+79 common settimeofday sys_settimeofday
+80 common getgroups sys_getgroups16
+81 common setgroups sys_setgroups16
+82 oabi select sys_old_select
+83 common symlink sys_symlink
+# 84 was sys_lstat
+85 common readlink sys_readlink
+86 common uselib sys_uselib
+87 common swapon sys_swapon
+88 common reboot sys_reboot
+89 oabi readdir sys_old_readdir
+90 oabi mmap sys_old_mmap
+91 common munmap sys_munmap
+92 common truncate sys_truncate
+93 common ftruncate sys_ftruncate
+94 common fchmod sys_fchmod
+95 common fchown sys_fchown16
+96 common getpriority sys_getpriority
+97 common setpriority sys_setpriority
+# 98 was sys_profil
+99 common statfs sys_statfs
+100 common fstatfs sys_fstatfs
+# 101 was sys_ioperm
+102 oabi socketcall sys_socketcall sys_oabi_socketcall
+103 common syslog sys_syslog
+104 common setitimer sys_setitimer
+105 common getitimer sys_getitimer
+106 common stat sys_newstat
+107 common lstat sys_newlstat
+108 common fstat sys_newfstat
+# 109 was sys_uname
+# 110 was sys_iopl
+111 common vhangup sys_vhangup
+# 112 was sys_idle
+# syscall to call a syscall!
+113 oabi syscall sys_syscall
+114 common wait4 sys_wait4
+115 common swapoff sys_swapoff
+116 common sysinfo sys_sysinfo
+117 oabi ipc sys_ipc sys_oabi_ipc
+118 common fsync sys_fsync
+119 common sigreturn sys_sigreturn_wrapper
+120 common clone sys_clone
+121 common setdomainname sys_setdomainname
+122 common uname sys_newuname
+# 123 was sys_modify_ldt
+124 common adjtimex sys_adjtimex
+125 common mprotect sys_mprotect
+126 common sigprocmask sys_sigprocmask
+# 127 was sys_create_module
+128 common init_module sys_init_module
+129 common delete_module sys_delete_module
+# 130 was sys_get_kernel_syms
+131 common quotactl sys_quotactl
+132 common getpgid sys_getpgid
+133 common fchdir sys_fchdir
+134 common bdflush sys_bdflush
+135 common sysfs sys_sysfs
+136 common personality sys_personality
+# 137 was sys_afs_syscall
+138 common setfsuid sys_setfsuid16
+139 common setfsgid sys_setfsgid16
+140 common _llseek sys_llseek
+141 common getdents sys_getdents
+142 common _newselect sys_select
+143 common flock sys_flock
+144 common msync sys_msync
+145 common readv sys_readv
+146 common writev sys_writev
+147 common getsid sys_getsid
+148 common fdatasync sys_fdatasync
+149 common _sysctl sys_sysctl
+150 common mlock sys_mlock
+151 common munlock sys_munlock
+152 common mlockall sys_mlockall
+153 common munlockall sys_munlockall
+154 common sched_setparam sys_sched_setparam
+155 common sched_getparam sys_sched_getparam
+156 common sched_setscheduler sys_sched_setscheduler
+157 common sched_getscheduler sys_sched_getscheduler
+158 common sched_yield sys_sched_yield
+159 common sched_get_priority_max sys_sched_get_priority_max
+160 common sched_get_priority_min sys_sched_get_priority_min
+161 common sched_rr_get_interval sys_sched_rr_get_interval
+162 common nanosleep sys_nanosleep
+163 common mremap sys_mremap
+164 common setresuid sys_setresuid16
+165 common getresuid sys_getresuid16
+# 166 was sys_vm86
+# 167 was sys_query_module
+168 common poll sys_poll
+169 common nfsservctl
+170 common setresgid sys_setresgid16
+171 common getresgid sys_getresgid16
+172 common prctl sys_prctl
+173 common rt_sigreturn sys_rt_sigreturn_wrapper
+174 common rt_sigaction sys_rt_sigaction
+175 common rt_sigprocmask sys_rt_sigprocmask
+176 common rt_sigpending sys_rt_sigpending
+177 common rt_sigtimedwait sys_rt_sigtimedwait
+178 common rt_sigqueueinfo sys_rt_sigqueueinfo
+179 common rt_sigsuspend sys_rt_sigsuspend
+180 common pread64 sys_pread64 sys_oabi_pread64
+181 common pwrite64 sys_pwrite64 sys_oabi_pwrite64
+182 common chown sys_chown16
+183 common getcwd sys_getcwd
+184 common capget sys_capget
+185 common capset sys_capset
+186 common sigaltstack sys_sigaltstack
+187 common sendfile sys_sendfile
+# 188 reserved
+# 189 reserved
+190 common vfork sys_vfork
+# SuS compliant getrlimit
+191 common ugetrlimit sys_getrlimit
+192 common mmap2 sys_mmap2
+193 common truncate64 sys_truncate64 sys_oabi_truncate64
+194 common ftruncate64 sys_ftruncate64 sys_oabi_ftruncate64
+195 common stat64 sys_stat64 sys_oabi_stat64
+196 common lstat64 sys_lstat64 sys_oabi_lstat64
+197 common fstat64 sys_fstat64 sys_oabi_fstat64
+198 common lchown32 sys_lchown
+199 common getuid32 sys_getuid
+200 common getgid32 sys_getgid
+201 common geteuid32 sys_geteuid
+202 common getegid32 sys_getegid
+203 common setreuid32 sys_setreuid
+204 common setregid32 sys_setregid
+205 common getgroups32 sys_getgroups
+206 common setgroups32 sys_setgroups
+207 common fchown32 sys_fchown
+208 common setresuid32 sys_setresuid
+209 common getresuid32 sys_getresuid
+210 common setresgid32 sys_setresgid
+211 common getresgid32 sys_getresgid
+212 common chown32 sys_chown
+213 common setuid32 sys_setuid
+214 common setgid32 sys_setgid
+215 common setfsuid32 sys_setfsuid
+216 common setfsgid32 sys_setfsgid
+217 common getdents64 sys_getdents64
+218 common pivot_root sys_pivot_root
+219 common mincore sys_mincore
+220 common madvise sys_madvise
+221 common fcntl64 sys_fcntl64 sys_oabi_fcntl64
+# 222 for tux
+# 223 is unused
+224 common gettid sys_gettid
+225 common readahead sys_readahead sys_oabi_readahead
+226 common setxattr sys_setxattr
+227 common lsetxattr sys_lsetxattr
+228 common fsetxattr sys_fsetxattr
+229 common getxattr sys_getxattr
+230 common lgetxattr sys_lgetxattr
+231 common fgetxattr sys_fgetxattr
+232 common listxattr sys_listxattr
+233 common llistxattr sys_llistxattr
+234 common flistxattr sys_flistxattr
+235 common removexattr sys_removexattr
+236 common lremovexattr sys_lremovexattr
+237 common fremovexattr sys_fremovexattr
+238 common tkill sys_tkill
+239 common sendfile64 sys_sendfile64
+240 common futex sys_futex
+241 common sched_setaffinity sys_sched_setaffinity
+242 common sched_getaffinity sys_sched_getaffinity
+243 common io_setup sys_io_setup
+244 common io_destroy sys_io_destroy
+245 common io_getevents sys_io_getevents
+246 common io_submit sys_io_submit
+247 common io_cancel sys_io_cancel
+248 common exit_group sys_exit_group
+249 common lookup_dcookie sys_lookup_dcookie
+250 common epoll_create sys_epoll_create
+251 common epoll_ctl sys_epoll_ctl sys_oabi_epoll_ctl
+252 common epoll_wait sys_epoll_wait sys_oabi_epoll_wait
+253 common remap_file_pages sys_remap_file_pages
+# 254 for set_thread_area
+# 255 for get_thread_area
+256 common set_tid_address sys_set_tid_address
+257 common timer_create sys_timer_create
+258 common timer_settime sys_timer_settime
+259 common timer_gettime sys_timer_gettime
+260 common timer_getoverrun sys_timer_getoverrun
+261 common timer_delete sys_timer_delete
+262 common clock_settime sys_clock_settime
+263 common clock_gettime sys_clock_gettime
+264 common clock_getres sys_clock_getres
+265 common clock_nanosleep sys_clock_nanosleep
+266 common statfs64 sys_statfs64_wrapper
+267 common fstatfs64 sys_fstatfs64_wrapper
+268 common tgkill sys_tgkill
+269 common utimes sys_utimes
+270 common arm_fadvise64_64 sys_arm_fadvise64_64
+271 common pciconfig_iobase sys_pciconfig_iobase
+272 common pciconfig_read sys_pciconfig_read
+273 common pciconfig_write sys_pciconfig_write
+274 common mq_open sys_mq_open
+275 common mq_unlink sys_mq_unlink
+276 common mq_timedsend sys_mq_timedsend
+277 common mq_timedreceive sys_mq_timedreceive
+278 common mq_notify sys_mq_notify
+279 common mq_getsetattr sys_mq_getsetattr
+280 common waitid sys_waitid
+281 common socket sys_socket
+282 common bind sys_bind sys_oabi_bind
+283 common connect sys_connect sys_oabi_connect
+284 common listen sys_listen
+285 common accept sys_accept
+286 common getsockname sys_getsockname
+287 common getpeername sys_getpeername
+288 common socketpair sys_socketpair
+289 common send sys_send
+290 common sendto sys_sendto sys_oabi_sendto
+291 common recv sys_recv
+292 common recvfrom sys_recvfrom
+293 common shutdown sys_shutdown
+294 common setsockopt sys_setsockopt
+295 common getsockopt sys_getsockopt
+296 common sendmsg sys_sendmsg sys_oabi_sendmsg
+297 common recvmsg sys_recvmsg
+298 common semop sys_semop sys_oabi_semop
+299 common semget sys_semget
+300 common semctl sys_semctl
+301 common msgsnd sys_msgsnd
+302 common msgrcv sys_msgrcv
+303 common msgget sys_msgget
+304 common msgctl sys_msgctl
+305 common shmat sys_shmat
+306 common shmdt sys_shmdt
+307 common shmget sys_shmget
+308 common shmctl sys_shmctl
+309 common add_key sys_add_key
+310 common request_key sys_request_key
+311 common keyctl sys_keyctl
+312 common semtimedop sys_semtimedop sys_oabi_semtimedop
+313 common vserver
+314 common ioprio_set sys_ioprio_set
+315 common ioprio_get sys_ioprio_get
+316 common inotify_init sys_inotify_init
+317 common inotify_add_watch sys_inotify_add_watch
+318 common inotify_rm_watch sys_inotify_rm_watch
+319 common mbind sys_mbind
+320 common get_mempolicy sys_get_mempolicy
+321 common set_mempolicy sys_set_mempolicy
+322 common openat sys_openat
+323 common mkdirat sys_mkdirat
+324 common mknodat sys_mknodat
+325 common fchownat sys_fchownat
+326 common futimesat sys_futimesat
+327 common fstatat64 sys_fstatat64 sys_oabi_fstatat64
+328 common unlinkat sys_unlinkat
+329 common renameat sys_renameat
+330 common linkat sys_linkat
+331 common symlinkat sys_symlinkat
+332 common readlinkat sys_readlinkat
+333 common fchmodat sys_fchmodat
+334 common faccessat sys_faccessat
+335 common pselect6 sys_pselect6
+336 common ppoll sys_ppoll
+337 common unshare sys_unshare
+338 common set_robust_list sys_set_robust_list
+339 common get_robust_list sys_get_robust_list
+340 common splice sys_splice
+341 common arm_sync_file_range sys_sync_file_range2
+342 common tee sys_tee
+343 common vmsplice sys_vmsplice
+344 common move_pages sys_move_pages
+345 common getcpu sys_getcpu
+346 common epoll_pwait sys_epoll_pwait
+347 common kexec_load sys_kexec_load
+348 common utimensat sys_utimensat
+349 common signalfd sys_signalfd
+350 common timerfd_create sys_timerfd_create
+351 common eventfd sys_eventfd
+352 common fallocate sys_fallocate
+353 common timerfd_settime sys_timerfd_settime
+354 common timerfd_gettime sys_timerfd_gettime
+355 common signalfd4 sys_signalfd4
+356 common eventfd2 sys_eventfd2
+357 common epoll_create1 sys_epoll_create1
+358 common dup3 sys_dup3
+359 common pipe2 sys_pipe2
+360 common inotify_init1 sys_inotify_init1
+361 common preadv sys_preadv
+362 common pwritev sys_pwritev
+363 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo
+364 common perf_event_open sys_perf_event_open
+365 common recvmmsg sys_recvmmsg
+366 common accept4 sys_accept4
+367 common fanotify_init sys_fanotify_init
+368 common fanotify_mark sys_fanotify_mark
+369 common prlimit64 sys_prlimit64
+370 common name_to_handle_at sys_name_to_handle_at
+371 common open_by_handle_at sys_open_by_handle_at
+372 common clock_adjtime sys_clock_adjtime
+373 common syncfs sys_syncfs
+374 common sendmmsg sys_sendmmsg
+375 common setns sys_setns
+376 common process_vm_readv sys_process_vm_readv
+377 common process_vm_writev sys_process_vm_writev
+378 common kcmp sys_kcmp
+379 common finit_module sys_finit_module
+380 common sched_setattr sys_sched_setattr
+381 common sched_getattr sys_sched_getattr
+382 common renameat2 sys_renameat2
+383 common seccomp sys_seccomp
+384 common getrandom sys_getrandom
+385 common memfd_create sys_memfd_create
+386 common bpf sys_bpf
+387 common execveat sys_execveat
+388 common userfaultfd sys_userfaultfd
+389 common membarrier sys_membarrier
+390 common mlock2 sys_mlock2
+391 common copy_file_range sys_copy_file_range
+392 common preadv2 sys_preadv2
+393 common pwritev2 sys_pwritev2
diff --git a/arch/arm/tools/syscallhdr.sh b/arch/arm/tools/syscallhdr.sh
new file mode 100644
index 000000000000..72d4b2e3bdec
--- /dev/null
+++ b/arch/arm/tools/syscallhdr.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+prefix="$4"
+offset="$5"
+
+fileguard=_ASM_ARM_`basename "$out" | sed \
+ -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+ -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+if echo $out | grep -q uapi; then
+ fileguard="_UAPI$fileguard"
+fi
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+ echo "#ifndef ${fileguard}"
+ echo "#define ${fileguard} 1"
+ echo ""
+
+ while read nr abi name entry ; do
+ if [ -z "$offset" ]; then
+ echo "#define __NR_${prefix}${name} $nr"
+ else
+ echo "#define __NR_${prefix}${name} ($offset + $nr)"
+ fi
+ done
+
+ echo ""
+ echo "#endif /* ${fileguard} */"
+) > "$out"
diff --git a/arch/arm/tools/syscallnr.sh b/arch/arm/tools/syscallnr.sh
new file mode 100644
index 000000000000..d2971296469a
--- /dev/null
+++ b/arch/arm/tools/syscallnr.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+align=1
+
+fileguard=_ASM_ARM_`basename "$out" | sed \
+ -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
+ -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | tail -n1 | (
+ echo "#ifndef ${fileguard}
+#define ${fileguard} 1
+
+/*
+ * This needs to be greater than __NR_last_syscall+1 in order to account
+ * for the padding in the syscall table.
+ */
+"
+
+ while read nr abi name entry; do
+ nr=$(($nr + 1))
+ while [ "$(($nr / (256 * $align) ))" -gt 0 ]; do
+ align=$(( $align * 4 ))
+ done
+ nr=$(( ($nr + $align - 1) & ~($align - 1) ))
+ echo "/* aligned to $align */"
+ echo "#define __NR_syscalls $nr"
+ done
+
+ echo ""
+ echo "#endif /* ${fileguard} */"
+) > "$out"
diff --git a/arch/arm/tools/syscalltbl.sh b/arch/arm/tools/syscalltbl.sh
new file mode 100644
index 000000000000..5ca834545ed3
--- /dev/null
+++ b/arch/arm/tools/syscalltbl.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+
+grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
+ while read nr abi name entry compat; do
+ if [ "$abi" = "eabi" -a -n "$compat" ]; then
+ echo "$in: error: a compat entry for an EABI syscall ($name) makes no sense" >&2
+ exit 1
+ fi
+
+ if [ -n "$entry" ]; then
+ if [ -z "$compat" ]; then
+ echo "NATIVE($nr, $entry)"
+ else
+ echo "COMPAT($nr, $entry, $compat)"
+ fi
+ fi
+ done
+) > "$out"