[v2,2/3] microblaze: add system call table generation support

Message ID 1538397784-4214-3-git-send-email-firoz.khan@linaro.org
State New
Headers show
Series
  • System call table generation support
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Commit Message

Firoz Khan Oct. 1, 2018, 12:43 p.m.
The system call tables are in different format in all
architecture and it will be difficult to manually add or
modify the system calls in the respective files. To make
it easy by keeping a script and which'll generate the
header file and syscall table file so this change will
unify them across all architectures.

The system call table generation script is added in
syscalls directory which contain the script to generate
both uapi header file system call table generation file
and syscall.tbl file which'll be the input for the scripts.

syscall.tbl contains the list of available system calls
along with system call number and corresponding entry point.
Add a new system call in this architecture will be possible
by adding new entry in the syscall.tbl file.

Adding a new table entry consisting of:
        - System call number.
        - ABI.
        - System call name.
        - Entry point name.

syscallhdr.sh and syscalltbl.sh will generate uapi header-
unistd.h and syscall_table.h files respectively. File
syscall_table.h is included by syscall.S - the real system
call table. Both .sh files will parse the content syscall.tbl
to generate the header and table files.

ARM, s390 and x86 architecuture does have the similar support.
I leverage their implementation to come up with a generic
solution. And this is the ground work for Y2038 issue. We need
to change two dozons of system call implementation and this
work will reduce the effort by simply modify two dozon entries
in syscall.tbl.

Signed-off-by: Firoz Khan <firoz.khan@linaro.org>

---
 arch/microblaze/kernel/syscalls/Makefile      |  38 +++
 arch/microblaze/kernel/syscalls/syscall.tbl   | 405 ++++++++++++++++++++++++++
 arch/microblaze/kernel/syscalls/syscallhdr.sh |  35 +++
 arch/microblaze/kernel/syscalls/syscalltbl.sh |  34 +++
 4 files changed, 512 insertions(+)
 create mode 100644 arch/microblaze/kernel/syscalls/Makefile
 create mode 100644 arch/microblaze/kernel/syscalls/syscall.tbl
 create mode 100644 arch/microblaze/kernel/syscalls/syscallhdr.sh
 create mode 100644 arch/microblaze/kernel/syscalls/syscalltbl.sh

-- 
1.9.1

Patch

diff --git a/arch/microblaze/kernel/syscalls/Makefile b/arch/microblaze/kernel/syscalls/Makefile
new file mode 100644
index 0000000..ae9207f
--- /dev/null
+++ b/arch/microblaze/kernel/syscalls/Makefile
@@ -0,0 +1,38 @@ 
+# SPDX-License-Identifier: GPL-2.0
+out := arch/$(SRCARCH)/include/generated/asm
+uapi := arch/$(SRCARCH)/include/generated/uapi/asm
+
+_dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)') \
+	  $(shell [ -d '$(out)' ] || mkdir -p '$(out)')
+
+syscall := $(srctree)/$(src)/syscall.tbl
+
+syshdr := $(srctree)/$(src)/syscallhdr.sh
+systbl := $(srctree)/$(src)/syscalltbl.sh
+
+quiet_cmd_syshdr = SYSHDR  $@
+      cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@'  \
+		   '$(syshdr_abi_$(basetarget))'          \
+		   '$(syshdr_pfx_$(basetarget))'          \
+		   '$(syshdr_offset_$(basetarget))'
+
+quiet_cmd_systbl = SYSTBL  $@
+      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@'  \
+		   '$(systbl_abi_$(basetarget))'          \
+		   '$(systbl_offset_$(basetarget))'
+
+$(uapi)/unistd_32.h: $(syscall) $(syshdr)
+	$(call if_changed,syshdr)
+
+$(out)/syscall_table.h: $(syscall) $(systbl)
+	$(call if_changed,systbl)
+
+uapisyshdr-y			+= unistd_32.h
+syshdr-y			+= syscall_table.h
+
+targets	+= $(uapisyshdr-y) $(syshdr-y)
+
+PHONY += all
+all: $(addprefix $(uapi)/,$(uapisyshdr-y))
+all: $(addprefix $(out)/,$(syshdr-y))
+	@:
diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
new file mode 100644
index 0000000..8ca90e6
--- /dev/null
+++ b/arch/microblaze/kernel/syscalls/syscall.tbl
@@ -0,0 +1,405 @@ 
+#
+# Linux system call numbers and entry vectors
+#
+# The format is:
+# <number> <abi> <name> <entry point>
+#
+# The abi is always common for this file.
+#
+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       common  waitpid                         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      common  time                            sys_time
+14      common  mknod                           sys_mknod
+15      common  chmod                           sys_chmod
+16      common  lchown                          sys_lchown
+17      common  break                           sys_ni_syscall
+18      common  oldstat                         sys_ni_syscall
+19      common  lseek                           sys_lseek
+20      common  getpid                          sys_getpid
+21      common  mount                           sys_mount
+22      common  umount                          sys_oldumount
+23      common  setuid                          sys_setuid
+24      common  getuid                          sys_getuid
+25      common  stime                           sys_stime
+26      common  ptrace                          sys_ptrace
+27      common  alarm                           sys_alarm
+28      common  oldfstat                        sys_ni_syscall
+29      common  pause                           sys_pause
+30      common  utime                           sys_utime
+31      common  stty                            sys_ni_syscall
+32      common  gtty                            sys_ni_syscall
+33      common  access                          sys_access
+34      common  nice                            sys_nice
+35      common  ftime                           sys_ni_syscall
+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      common  prof                            sys_ni_syscall
+45      common  brk                             sys_brk
+46      common  setgid                          sys_setgid
+47      common  getgid                          sys_getgid
+48      common  signal                          sys_signal
+49      common  geteuid                         sys_geteuid
+50      common  getegid                         sys_getegid
+51      common  acct                            sys_acct
+52      common  umount2                         sys_umount
+53      common  lock                            sys_ni_syscall
+54      common  ioctl                           sys_ioctl
+55      common  fcntl                           sys_fcntl
+56      common  mpx                             sys_ni_syscall
+57      common  setpgid                         sys_setpgid
+58      common  ulimit                          sys_ni_syscall
+59      common  oldolduname                     sys_ni_syscall
+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_ni_syscall
+68      common  sgetmask                        sys_sgetmask
+69      common  ssetmask                        sys_ssetmask
+70      common  setreuid                        sys_setreuid
+71      common  setregid                        sys_setregid
+72      common  sigsuspend                      sys_ni_syscall
+73      common  sigpending                      sys_sigpending
+74      common  sethostname                     sys_sethostname
+75      common  setrlimit                       sys_setrlimit
+76      common  getrlimit                       sys_ni_syscall
+77      common  getrusage                       sys_getrusage
+78      common  gettimeofday                    sys_gettimeofday
+79      common  settimeofday                    sys_settimeofday
+80      common  getgroups                       sys_getgroups
+81      common  setgroups                       sys_setgroups
+82      common  select                          sys_ni_syscall
+83      common  symlink                         sys_symlink
+84      common  oldlstat                        sys_ni_syscall
+85      common  readlink                        sys_readlink
+86      common  uselib                          sys_uselib
+87      common  swapon                          sys_swapon
+88      common  reboot                          sys_reboot
+89      common  readdir                         sys_ni_syscall
+90      common  mmap                            sys_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_fchown
+96      common  getpriority                     sys_getpriority
+97      common  setpriority                     sys_setpriority
+98      common  profil                          sys_ni_syscall
+99      common  statfs                          sys_statfs
+100     common  fstatfs                         sys_fstatfs
+101     common  ioperm                          sys_ni_syscall
+102     common  socketcall                      sys_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     common  olduname                        sys_ni_syscall
+110     common  iopl                            sys_ni_syscall
+111     common  vhangup                         sys_vhangup
+112     common  idle                            sys_ni_syscall
+113     common  vm86old                         sys_ni_syscall
+114     common  wait4                           sys_wait4
+115     common  swapoff                         sys_swapoff
+116     common  sysinfo                         sys_sysinfo
+117     common  ipc                             sys_ni_syscall
+118     common  fsync                           sys_fsync
+119     common  sigreturn                       sys_ni_syscall
+120     common  clone                           sys_clone
+121     common  setdomainname                   sys_setdomainname
+122     common  uname                           sys_newuname
+123     common  modify_ldt                      sys_ni_syscall
+124     common  adjtimex                        sys_adjtimex
+125     common  mprotect                        sys_mprotect
+126     common  sigprocmask                     sys_sigprocmask
+127     common  create_module                   sys_ni_syscall
+128     common  init_module                     sys_init_module
+129     common  delete_module                   sys_delete_module
+130     common  get_kernel_syms                 sys_ni_syscall
+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     common  afs_syscall                     sys_ni_syscall
+138     common  setfsuid                        sys_setfsuid
+139     common  setfsgid                        sys_setfsgid
+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_setresuid
+165     common  getresuid                       sys_getresuid
+166     common  vm86                            sys_ni_syscall
+167     common  query_module                    sys_ni_syscall
+168     common  poll                            sys_poll
+169     common  nfsservctl                      sys_ni_syscall
+170     common  setresgid                       sys_setresgid
+171     common  getresgid                       sys_getresgid
+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
+181     common  pwrite64                        sys_pwrite64
+182     common  chown                           sys_chown
+183     common  getcwd                          sys_getcwd
+184     common  capget                          sys_capget
+185     common  capset                          sys_capset
+186     common  sigaltstack                     sys_ni_syscall
+187     common  sendfile                        sys_sendfile
+188     common  getpmsg                         sys_ni_syscall
+189     common  putpmsg                         sys_ni_syscall
+190     common  vfork                           sys_vfork
+191     common  ugetrlimit                      sys_getrlimit
+192     common  mmap2                           sys_mmap2
+193     common  truncate64                      sys_truncate64
+194     common  ftruncate64                     sys_ftruncate64
+195     common  stat64                          sys_stat64
+196     common  lstat64                         sys_lstat64
+197     common  fstat64                         sys_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  pivot_root                      sys_pivot_root
+218     common  mincore                         sys_mincore
+219     common  madvise                         sys_madvise
+220     common  getdents64                      sys_getdents64
+221     common  fcntl64                         sys_fcntl64
+224     common  gettid                          sys_gettid
+225     common  readahead                       sys_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  set_thread_area                 sys_ni_syscall
+244     common  get_thread_area                 sys_ni_syscall
+245     common  io_setup                        sys_io_setup
+246     common  io_destroy                      sys_io_destroy
+247     common  io_getevents                    sys_io_getevents
+248     common  io_submit                       sys_io_submit
+249     common  io_cancel                       sys_io_cancel
+250     common  fadvise64                       sys_fadvise64
+252     common  exit_group                      sys_exit_group
+253     common  lookup_dcookie                  sys_lookup_dcookie
+254     common  epoll_create                    sys_epoll_create
+255     common  epoll_ctl                       sys_epoll_ctl
+256     common  epoll_wait                      sys_epoll_wait
+257     common  remap_file_pages                sys_remap_file_pages
+258     common  set_tid_address                 sys_set_tid_address
+259     common  timer_create                    sys_timer_create
+260     common  timer_settime                   sys_timer_settime
+261     common  timer_gettime                   sys_timer_gettime
+262     common  timer_getoverrun                sys_timer_getoverrun
+263     common  timer_delete                    sys_timer_delete
+264     common  clock_settime                   sys_clock_settime
+265     common  clock_gettime                   sys_clock_gettime
+266     common  clock_getres                    sys_clock_getres
+267     common  clock_nanosleep                 sys_clock_nanosleep
+268     common  statfs64                        sys_statfs64
+269     common  fstatfs64                       sys_fstatfs64
+270     common  tgkill                          sys_tgkill
+271     common  utimes                          sys_utimes
+272     common  fadvise64_64                    sys_fadvise64_64
+273     common  vserver                         sys_ni_syscall
+274     common  mbind                           sys_mbind
+275     common  get_mempolicy                   sys_get_mempolicy
+276     common  set_mempolicy                   sys_set_mempolicy
+277     common  mq_open                         sys_mq_open
+278     common  mq_unlink                       sys_mq_unlink
+279     common  mq_timedsend                    sys_mq_timedsend
+280     common  mq_timedreceive                 sys_mq_timedreceive
+281     common  mq_notify                       sys_mq_notify
+282     common  mq_getsetattr                   sys_mq_getsetattr
+283     common  kexec_load                      sys_kexec_load
+284     common  waitid                          sys_waitid
+286     common  add_key                         sys_add_key
+287     common  request_key                     sys_request_key
+288     common  keyctl                          sys_keyctl
+289     common  ioprio_set                      sys_ioprio_set
+290     common  ioprio_get                      sys_ioprio_get
+291     common  inotify_init                    sys_inotify_init
+292     common  inotify_add_watch               sys_inotify_add_watch
+293     common  inotify_rm_watch                sys_inotify_rm_watch
+294     common  migrate_pages                   sys_ni_syscall
+295     common  openat                          sys_openat
+296     common  mkdirat                         sys_mkdirat
+297     common  mknodat                         sys_mknodat
+298     common  fchownat                        sys_fchownat
+299     common  futimesat                       sys_futimesat
+300     common  fstatat64                       sys_fstatat64
+301     common  unlinkat                        sys_unlinkat
+302     common  renameat                        sys_renameat
+303     common  linkat                          sys_linkat
+304     common  symlinkat                       sys_symlinkat
+305     common  readlinkat                      sys_readlinkat
+306     common  fchmodat                        sys_fchmodat
+307     common  faccessat                       sys_faccessat
+308     common  pselect6                        sys_pselect6
+309     common  ppoll                           sys_ppoll
+310     common  unshare                         sys_unshare
+311     common  set_robust_list                 sys_set_robust_list
+312     common  get_robust_list                 sys_get_robust_list
+313     common  splice                          sys_splice
+314     common  sync_file_range                 sys_sync_file_range
+315     common  tee                             sys_tee
+316     common  vmsplice                        sys_vmsplice
+317     common  move_pages                      sys_move_pages
+318     common  getcpu                          sys_getcpu
+319     common  epoll_pwait                     sys_epoll_pwait
+320     common  utimensat                       sys_utimensat
+321     common  signalfd                        sys_signalfd
+322     common  timerfd_create                  sys_timerfd_create
+323     common  eventfd                         sys_eventfd
+324     common  fallocate                       sys_fallocate
+325     common  semtimedop                      sys_semtimedop
+326     common  timerfd_settime                 sys_timerfd_settime
+327     common  timerfd_gettime                 sys_timerfd_gettime
+328     common  semctl                          sys_semctl
+329     common  semget                          sys_semget
+330     common  semop                           sys_semop
+331     common  msgctl                          sys_msgctl
+332     common  msgget                          sys_msgget
+333     common  msgrcv                          sys_msgrcv
+334     common  msgsnd                          sys_msgsnd
+335     common  shmat                           sys_shmat
+336     common  shmctl                          sys_shmctl
+337     common  shmdt                           sys_shmdt
+338     common  shmget                          sys_shmget
+339     common  signalfd4                       sys_signalfd4
+340     common  eventfd2                        sys_eventfd2
+341     common  epoll_create1                   sys_epoll_create1
+342     common  dup3                            sys_dup3
+343     common  pipe2                           sys_pipe2
+344     common  inotify_init1                   sys_inotify_init1
+345     common  socket                          sys_socket
+346     common  socketpair                      sys_socketpair
+347     common  bind                            sys_bind
+348     common  listen                          sys_listen
+349     common  accept                          sys_accept
+350     common  connect                         sys_connect
+351     common  getsockname                     sys_getsockname
+352     common  getpeername                     sys_getpeername
+353     common  sendto                          sys_sendto
+354     common  send                            sys_send
+355     common  recvfrom                        sys_recvfrom
+356     common  recv                            sys_recv
+357     common  setsockopt                      sys_setsockopt
+358     common  getsockopt                      sys_getsockopt
+359     common  shutdown                        sys_shutdown
+360     common  sendmsg                         sys_sendmsg
+361     common  recvmsg                         sys_recvmsg
+362     common  accept4                         sys_accept4
+363     common  preadv                          sys_preadv
+364     common  pwritev                         sys_pwritev
+365     common  rt_tgsigqueueinfo               sys_rt_tgsigqueueinfo
+366     common  perf_event_open                 sys_perf_event_open
+367     common  recvmmsg                        sys_recvmmsg
+368     common  fanotify_init                   sys_fanotify_init
+369     common  fanotify_mark                   sys_fanotify_mark
+370     common  prlimit64                       sys_prlimit64
+371     common  name_to_handle_at               sys_name_to_handle_at
+372     common  open_by_handle_at               sys_open_by_handle_at
+373     common  clock_adjtime                   sys_clock_adjtime
+374     common  syncfs                          sys_syncfs
+375     common  setns                           sys_setns
+376     common  sendmmsg                        sys_sendmmsg
+377     common  process_vm_readv                sys_process_vm_readv
+378     common  process_vm_writev               sys_process_vm_writev
+379     common  kcmp                            sys_kcmp
+380     common  finit_module                    sys_finit_module
+381     common  sched_setattr                   sys_sched_setattr
+382     common  sched_getattr                   sys_sched_getattr
+383     common  renameat2                       sys_renameat2
+384     common  seccomp                         sys_seccomp
+385     common  getrandom                       sys_getrandom
+386     common  memfd_create                    sys_memfd_create
+387     common  bpf                             sys_bpf
+388     common  execveat                        sys_execveat
+389     common  userfaultfd                     sys_userfaultfd
+390     common  membarrier                      sys_membarrier
+391     common  mlock2                          sys_mlock2
+392     common  copy_file_range                 sys_copy_file_range
+393     common  preadv2                         sys_preadv2
+394     common  pwritev2                        sys_pwritev2
+395     common  pkey_mprotect                   sys_pkey_mprotect
+396     common  pkey_alloc                      sys_pkey_alloc
+397     common  pkey_free                       sys_pkey_free
+398     common  statx                           sys_statx
+399	common 	io_pgetevents			sys_io_pgetevents
+400	common	rseq				sys_rseq
\ No newline at end of file
diff --git a/arch/microblaze/kernel/syscalls/syscallhdr.sh b/arch/microblaze/kernel/syscalls/syscallhdr.sh
new file mode 100644
index 0000000..65c882e
--- /dev/null
+++ b/arch/microblaze/kernel/syscalls/syscallhdr.sh
@@ -0,0 +1,35 @@ 
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+in="$1"
+out="$2"
+my_abis=`echo "($3)" | tr ',' '|'`
+prefix="$4"
+offset="$5"
+
+fileguard=_UAPI_ASM_MICROBLAZE_`basename "$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 | (
+    echo "#ifndef ${fileguard}"
+    echo "#define ${fileguard}"
+    echo ""
+
+    nxt=0
+    while read nr abi name entry ; do
+	if [ -z "$offset" ]; then
+	    echo -e "#define __NR_${prefix}${name}\t$nr"
+	else
+	    echo -e "#define __NR_${prefix}${name}\t($offset + $nr)"
+	fi
+	nxt=$nr
+	let nxt=nxt+1
+    done
+
+    echo ""
+    echo "#ifdef __KERNEL__"
+    echo -e "#define __NR_syscalls\t$nxt"
+    echo "#endif"
+    echo ""
+    echo "#endif /* ${fileguard} */"
+) > "$out"
diff --git a/arch/microblaze/kernel/syscalls/syscalltbl.sh b/arch/microblaze/kernel/syscalls/syscalltbl.sh
new file mode 100644
index 0000000..d2635de
--- /dev/null
+++ b/arch/microblaze/kernel/syscalls/syscalltbl.sh
@@ -0,0 +1,34 @@ 
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+
+in="$1"
+out="$2"
+my_abi="$3"
+offset="$4"
+
+emit() {
+    nxt="$1"
+    nr="$2"
+    entry="$3"
+
+    while [ $nxt -lt $nr ]; do
+	echo "__SYSCALL($nxt, sys_ni_syscall, )"
+	let nxt=nxt+1
+    done
+
+    echo "__SYSCALL($nr, $entry, )"
+}
+
+grep '^[0-9]' "$in" | sort -n | (
+    if [ -z "$offset" ]; then
+	nxt=0
+    else
+	nxt=$offset
+    fi
+
+    while read nr abi name entry ; do
+	emit $nxt $nr $entry
+	nxt=$nr
+        let nxt=nxt+1
+    done
+) > "$out"