Commit c7914ef6 authored by Firoz Khan's avatar Firoz Khan Committed by Max Filippov

xtensa: add system call table generation support

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.c - 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: default avatarFiroz Khan <firoz.khan@linaro.org>
Signed-off-by: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent a86067f5
# 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))
@:
# SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
#
# system call numbers and entry vectors for xtensa
#
# The format is:
# <number> <abi> <name> <entry point>
#
# The <abi> is always "common" for this file
#
0 common spill sys_ni_syscall
1 common xtensa sys_ni_syscall
2 common available4 sys_ni_syscall
3 common available5 sys_ni_syscall
4 common available6 sys_ni_syscall
5 common available7 sys_ni_syscall
6 common available8 sys_ni_syscall
7 common available9 sys_ni_syscall
# File Operations
8 common open sys_open
9 common close sys_close
10 common dup sys_dup
11 common dup2 sys_dup2
12 common read sys_read
13 common write sys_write
14 common select sys_select
15 common lseek sys_lseek
16 common poll sys_poll
17 common _llseek sys_llseek
18 common epoll_wait sys_epoll_wait
19 common epoll_ctl sys_epoll_ctl
20 common epoll_create sys_epoll_create
21 common creat sys_creat
22 common truncate sys_truncate
23 common ftruncate sys_ftruncate
24 common readv sys_readv
25 common writev sys_writev
26 common fsync sys_fsync
27 common fdatasync sys_fdatasync
28 common truncate64 sys_truncate64
29 common ftruncate64 sys_ftruncate64
30 common pread64 sys_pread64
31 common pwrite64 sys_pwrite64
32 common link sys_link
33 common rename sys_rename
34 common symlink sys_symlink
35 common readlink sys_readlink
36 common mknod sys_mknod
37 common pipe sys_pipe
38 common unlink sys_unlink
39 common rmdir sys_rmdir
40 common mkdir sys_mkdir
41 common chdir sys_chdir
42 common fchdir sys_fchdir
43 common getcwd sys_getcwd
44 common chmod sys_chmod
45 common chown sys_chown
46 common stat sys_newstat
47 common stat64 sys_stat64
48 common lchown sys_lchown
49 common lstat sys_newlstat
50 common lstat64 sys_lstat64
51 common available51 sys_ni_syscall
52 common fchmod sys_fchmod
53 common fchown sys_fchown
54 common fstat sys_newfstat
55 common fstat64 sys_fstat64
56 common flock sys_flock
57 common access sys_access
58 common umask sys_umask
59 common getdents sys_getdents
60 common getdents64 sys_getdents64
61 common fcntl64 sys_fcntl64
62 common fallocate sys_fallocate
63 common fadvise64_64 xtensa_fadvise64_64
64 common utime sys_utime
65 common utimes sys_utimes
66 common ioctl sys_ioctl
67 common fcntl sys_fcntl
68 common setxattr sys_setxattr
69 common getxattr sys_getxattr
70 common listxattr sys_listxattr
71 common removexattr sys_removexattr
72 common lsetxattr sys_lsetxattr
73 common lgetxattr sys_lgetxattr
74 common llistxattr sys_llistxattr
75 common lremovexattr sys_lremovexattr
76 common fsetxattr sys_fsetxattr
77 common fgetxattr sys_fgetxattr
78 common flistxattr sys_flistxattr
79 common fremovexattr sys_fremovexattr
# File Map / Shared Memory Operations
80 common mmap2 sys_mmap_pgoff
81 common munmap sys_munmap
82 common mprotect sys_mprotect
83 common brk sys_brk
84 common mlock sys_mlock
85 common munlock sys_munlock
86 common mlockall sys_mlockall
87 common munlockall sys_munlockall
88 common mremap sys_mremap
89 common msync sys_msync
90 common mincore sys_mincore
91 common madvise sys_madvise
92 common shmget sys_shmget
93 common shmat xtensa_shmat
94 common shmctl sys_shmctl
95 common shmdt sys_shmdt
# Socket Operations
96 common socket sys_socket
97 common setsockopt sys_setsockopt
98 common getsockopt sys_getsockopt
99 common shutdown sys_shutdown
100 common bind sys_bind
101 common connect sys_connect
102 common listen sys_listen
103 common accept sys_accept
104 common getsockname sys_getsockname
105 common getpeername sys_getpeername
106 common sendmsg sys_sendmsg
107 common recvmsg sys_recvmsg
108 common send sys_send
109 common recv sys_recv
110 common sendto sys_sendto
111 common recvfrom sys_recvfrom
112 common socketpair sys_socketpair
113 common sendfile sys_sendfile
114 common sendfile64 sys_sendfile64
115 common sendmmsg sys_sendmmsg
# Process Operations
116 common clone sys_clone
117 common execve sys_execve
118 common exit sys_exit
119 common exit_group sys_exit_group
120 common getpid sys_getpid
121 common wait4 sys_wait4
122 common waitid sys_waitid
123 common kill sys_kill
124 common tkill sys_tkill
125 common tgkill sys_tgkill
126 common set_tid_address sys_set_tid_address
127 common gettid sys_gettid
128 common setsid sys_setsid
129 common getsid sys_getsid
130 common prctl sys_prctl
131 common personality sys_personality
132 common getpriority sys_getpriority
133 common setpriority sys_setpriority
134 common setitimer sys_setitimer
135 common getitimer sys_getitimer
136 common setuid sys_setuid
137 common getuid sys_getuid
138 common setgid sys_setgid
139 common getgid sys_getgid
140 common geteuid sys_geteuid
141 common getegid sys_getegid
142 common setreuid sys_setreuid
143 common setregid sys_setregid
144 common setresuid sys_setresuid
145 common getresuid sys_getresuid
146 common setresgid sys_setresgid
147 common getresgid sys_getresgid
148 common setpgid sys_setpgid
149 common getpgid sys_getpgid
150 common getppid sys_getppid
151 common getpgrp sys_getpgrp
# 152 was set_thread_area
152 common reserved152 sys_ni_syscall
# 153 was get_thread_area
153 common reserved153 sys_ni_syscall
154 common times sys_times
155 common acct sys_acct
156 common sched_setaffinity sys_sched_setaffinity
157 common sched_getaffinity sys_sched_getaffinity
158 common capget sys_capget
159 common capset sys_capset
160 common ptrace sys_ptrace
161 common semtimedop sys_semtimedop
162 common semget sys_semget
163 common semop sys_semop
164 common semctl sys_semctl
165 common available165 sys_ni_syscall
166 common msgget sys_msgget
167 common msgsnd sys_msgsnd
168 common msgrcv sys_msgrcv
169 common msgctl sys_msgctl
170 common available170 sys_ni_syscall
# File System
171 common umount2 sys_umount
172 common mount sys_mount
173 common swapon sys_swapon
174 common chroot sys_chroot
175 common pivot_root sys_pivot_root
176 common umount sys_oldumount
177 common swapoff sys_swapoff
178 common sync sys_sync
179 common syncfs sys_syncfs
180 common setfsuid sys_setfsuid
181 common setfsgid sys_setfsgid
182 common sysfs sys_sysfs
183 common ustat sys_ustat
184 common statfs sys_statfs
185 common fstatfs sys_fstatfs
186 common statfs64 sys_statfs64
187 common fstatfs64 sys_fstatfs64
# System
188 common setrlimit sys_setrlimit
189 common getrlimit sys_getrlimit
190 common getrusage sys_getrusage
191 common futex sys_futex
192 common gettimeofday sys_gettimeofday
193 common settimeofday sys_settimeofday
194 common adjtimex sys_adjtimex
195 common nanosleep sys_nanosleep
196 common getgroups sys_getgroups
197 common setgroups sys_setgroups
198 common sethostname sys_sethostname
199 common setdomainname sys_setdomainname
200 common syslog sys_syslog
201 common vhangup sys_vhangup
202 common uselib sys_uselib
203 common reboot sys_reboot
204 common quotactl sys_quotactl
# 205 was old nfsservctl
205 common nfsservctl sys_ni_syscall
206 common _sysctl sys_sysctl
207 common bdflush sys_bdflush
208 common uname sys_newuname
209 common sysinfo sys_sysinfo
210 common init_module sys_init_module
211 common delete_module sys_delete_module
212 common sched_setparam sys_sched_setparam
213 common sched_getparam sys_sched_getparam
214 common sched_setscheduler sys_sched_setscheduler
215 common sched_getscheduler sys_sched_getscheduler
216 common sched_get_priority_max sys_sched_get_priority_max
217 common sched_get_priority_min sys_sched_get_priority_min
218 common sched_rr_get_interval sys_sched_rr_get_interval
219 common sched_yield sys_sched_yield
222 common available222 sys_ni_syscall
# Signal Handling
223 common restart_syscall sys_restart_syscall
224 common sigaltstack sys_sigaltstack
225 common rt_sigreturn xtensa_rt_sigreturn
226 common rt_sigaction sys_rt_sigaction
227 common rt_sigprocmask sys_rt_sigprocmask
228 common rt_sigpending sys_rt_sigpending
229 common rt_sigtimedwait sys_rt_sigtimedwait
230 common rt_sigqueueinfo sys_rt_sigqueueinfo
231 common rt_sigsuspend sys_rt_sigsuspend
# Message
232 common mq_open sys_mq_open
233 common mq_unlink sys_mq_unlink
234 common mq_timedsend sys_mq_timedsend
235 common mq_timedreceive sys_mq_timedreceive
236 common mq_notify sys_mq_notify
237 common mq_getsetattr sys_mq_getsetattr
238 common available238 sys_ni_syscall
239 common io_setup sys_io_setup
# IO
240 common io_destroy sys_io_destroy
241 common io_submit sys_io_submit
242 common io_getevents sys_io_getevents
243 common io_cancel sys_io_cancel
244 common clock_settime sys_clock_settime
245 common clock_gettime sys_clock_gettime
246 common clock_getres sys_clock_getres
247 common clock_nanosleep sys_clock_nanosleep
# Timer
248 common timer_create sys_timer_create
249 common timer_delete sys_timer_delete
250 common timer_settime sys_timer_settime
251 common timer_gettime sys_timer_gettime
252 common timer_getoverrun sys_timer_getoverrun
# System
253 common reserved253 sys_ni_syscall
254 common lookup_dcookie sys_lookup_dcookie
255 common available255 sys_ni_syscall
256 common add_key sys_add_key
257 common request_key sys_request_key
258 common keyctl sys_keyctl
259 common available259 sys_ni_syscall
260 common readahead sys_readahead
261 common remap_file_pages sys_remap_file_pages
262 common migrate_pages sys_migrate_pages
263 common mbind sys_mbind
264 common get_mempolicy sys_get_mempolicy
265 common set_mempolicy sys_set_mempolicy
266 common unshare sys_unshare
267 common move_pages sys_move_pages
268 common splice sys_splice
269 common tee sys_tee
270 common vmsplice sys_vmsplice
271 common available271 sys_ni_syscall
272 common pselect6 sys_pselect6
273 common ppoll sys_ppoll
274 common epoll_pwait sys_epoll_pwait
275 common epoll_create1 sys_epoll_create1
276 common inotify_init sys_inotify_init
277 common inotify_add_watch sys_inotify_add_watch
278 common inotify_rm_watch sys_inotify_rm_watch
279 common inotify_init1 sys_inotify_init1
280 common getcpu sys_getcpu
281 common kexec_load sys_ni_syscall
282 common ioprio_set sys_ioprio_set
283 common ioprio_get sys_ioprio_get
284 common set_robust_list sys_set_robust_list
285 common get_robust_list sys_get_robust_list
286 common available286 sys_ni_syscall
287 common available287 sys_ni_syscall
# Relative File Operations
288 common openat sys_openat
289 common mkdirat sys_mkdirat
290 common mknodat sys_mknodat
291 common unlinkat sys_unlinkat
292 common renameat sys_renameat
293 common linkat sys_linkat
294 common symlinkat sys_symlinkat
295 common readlinkat sys_readlinkat
296 common utimensat sys_utimensat
297 common fchownat sys_fchownat
298 common futimesat sys_futimesat
299 common fstatat64 sys_fstatat64
300 common fchmodat sys_fchmodat
301 common faccessat sys_faccessat
302 common available302 sys_ni_syscall
303 common available303 sys_ni_syscall
304 common signalfd sys_signalfd
# 305 was timerfd
306 common eventfd sys_eventfd
307 common recvmmsg sys_recvmmsg
308 common setns sys_setns
309 common signalfd4 sys_signalfd4
310 common dup3 sys_dup3
311 common pipe2 sys_pipe2
312 common timerfd_create sys_timerfd_create
313 common timerfd_settime sys_timerfd_settime
314 common timerfd_gettime sys_timerfd_gettime
315 common available315 sys_ni_syscall
316 common eventfd2 sys_eventfd2
317 common preadv sys_preadv
318 common pwritev sys_pwritev
319 common available319 sys_ni_syscall
320 common fanotify_init sys_fanotify_init
321 common fanotify_mark sys_fanotify_mark
322 common process_vm_readv sys_process_vm_readv
323 common process_vm_writev sys_process_vm_writev
324 common name_to_handle_at sys_name_to_handle_at
325 common open_by_handle_at sys_open_by_handle_at
326 common sync_file_range2 sys_sync_file_range2
327 common perf_event_open sys_perf_event_open
328 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo
329 common clock_adjtime sys_clock_adjtime
330 common prlimit64 sys_prlimit64
331 common kcmp sys_kcmp
332 common finit_module sys_finit_module
333 common accept4 sys_accept4
334 common sched_setattr sys_sched_setattr
335 common sched_getattr sys_sched_getattr
336 common renameat2 sys_renameat2
337 common seccomp sys_seccomp
338 common getrandom sys_getrandom
339 common memfd_create sys_memfd_create
340 common bpf sys_bpf
341 common execveat sys_execveat
342 common userfaultfd sys_userfaultfd
343 common membarrier sys_membarrier
344 common mlock2 sys_mlock2
345 common copy_file_range sys_copy_file_range
346 common preadv2 sys_preadv2
347 common pwritev2 sys_pwritev2
348 common pkey_mprotect sys_pkey_mprotect
349 common pkey_alloc sys_pkey_alloc
350 common pkey_free sys_pkey_free
351 common statx sys_statx
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
in="$1"
out="$2"
my_abis=`echo "($3)" | tr ',' '|'`
prefix="$4"
offset="$5"
fileguard=_UAPI_ASM_XTENSA_`basename "$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"
#!/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"
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