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microblaze: add system call table generation support

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The system call tables are in different format in all
architecture and it will be difficult to manually add,
modify or delete the syscall table entries in the res-
pective files. To make it easy by keeping a script and
which will generate the uapi header and syscall table
file. This change will also help to unify the implemen-
tation across all architectures.

The system call table generation script is added in
kernel/syscalls directory which contain the scripts to
generate both uapi header file and system call table
files. The syscall.tbl will be 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_32.h and syscall_table.h files respectively. Both
.sh files will parse the content syscall.tbl to generate
the header and table files. unistd_32.h will be included
by uapi/asm/unistd.h and syscall_table.h is included by
kernel/syscall_table.S - the real system call table.

ARM, s390 and x86 architecuture does have similar support.
I leverage their implementation to come up with a generic
solution.

Signed-off-by: Firoz Khan <firoz.khan@linaro.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Firoz Khan 2018-11-13 11:34:33 +05:30 committed by Michal Simek
parent c0b2826aa0
commit fc06bac35c
4 changed files with 516 additions and 0 deletions
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38
arch/microblaze/kernel/syscalls/Makefile Normal file
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# SPDX-License-Identifier: GPL-2.0
kapi := arch/$(SRCARCH)/include/generated/asm
uapi := arch/$(SRCARCH)/include/generated/uapi/asm
_dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)') \
$(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
syscall := $(srctree)/$(src)/syscall.tbl
syshdr := $(srctree)/$(src)/syscallhdr.sh
systbl := $(srctree)/$(src)/syscalltbl.sh
quiet_cmd_syshdr = SYSHDR $@
cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
'$(syshdr_abis_$(basetarget))' \
'$(syshdr_pfx_$(basetarget))' \
'$(syshdr_offset_$(basetarget))'
quiet_cmd_systbl = SYSTBL $@
cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
'$(systbl_abis_$(basetarget))' \
'$(systbl_abi_$(basetarget))' \
'$(systbl_offset_$(basetarget))'
$(uapi)/unistd_32.h: $(syscall) $(syshdr)
$(call if_changed,syshdr)
$(kapi)/syscall_table.h: $(syscall) $(systbl)
$(call if_changed,systbl)
uapisyshdr-y += unistd_32.h
kapisyshdr-y += syscall_table.h
targets += $(uapisyshdr-y) $(kapisyshdr-y)
PHONY += all
all: $(addprefix $(uapi)/,$(uapisyshdr-y))
all: $(addprefix $(kapi)/,$(kapisyshdr-y))
@:

410
arch/microblaze/kernel/syscalls/syscall.tbl Normal file
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# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
#
# system call numbers and entry vectors for microblaze
#
# 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
# 222 is reserved for TUX
# 223 is unused
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
# 251 is available for reuse (was briefly sys_set_zone_reclaim)
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
# 285 was setaltroot
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

36
arch/microblaze/kernel/syscalls/syscallhdr.sh Normal file
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#!/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 | (
printf "#ifndef %s\n" "${fileguard}"
printf "#define %s\n" "${fileguard}"
printf "\n"
nxt=0
while read nr abi name entry ; do
if [ -z "$offset" ]; then
printf "#define __NR_%s%s\t%s\n" \
"${prefix}" "${name}" "${nr}"
else
printf "#define __NR_%s%s\t(%s + %s)\n" \
"${prefix}" "${name}" "${offset}" "${nr}"
fi
nxt=$((nr+1))
done
printf "\n"
printf "#ifdef __KERNEL__\n"
printf "#define __NR_syscalls\t%s\n" "${nxt}"
printf "#endif\n"
printf "\n"
printf "#endif /* %s */" "${fileguard}"
) > "$out"

32
arch/microblaze/kernel/syscalls/syscalltbl.sh Normal file
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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
in="$1"
out="$2"
my_abis=`echo "($3)" | tr ',' '|'`
my_abi="$4"
offset="$5"
emit() {
t_nxt="$1"
t_nr="$2"
t_entry="$3"
while [ $t_nxt -lt $t_nr ]; do
printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
t_nxt=$((t_nxt+1))
done
printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
}
grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
nxt=0
if [ -z "$offset" ]; then
offset=0
fi
while read nr abi name entry ; do
emit $((nxt+offset)) $((nr+offset)) $entry
nxt=$((nr+1))
done
) > "$out"