Linux: Add tables with system call numbers

The new tables are currently only used for consistency checks
with the installed kernel headers and the architecture-independent
system call names table.  They are based on Linux 5.4.

The goal is to use these architecture-specific tables to ensure
that system call wrappers are available irrespective of the version
of the installed kernel headers.

The tables are formatted in the form of C header files so that they
can be used directly in an #include directive, without external
preprocessing.  (External preprocessing of a plain table file
would introduce cross-subdirectory dependency issues.)  However,
the intent is that they can still be treated as tables and can be
processed by simple tools.

The irregular system call names on 32-bit arm add a complication.
The <fixup-asm-unistd.h> header is introduced to work around that,
and the system calls are listed under regular names in the
<arch-syscall.h> file.

A make target, update-syscalls-list, is added to patch the glibc
sources with data from the current kernel headers.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

30 files changed, 9050 insertions, 22 deletions

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 8735092c12..f12b7b1a2d 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -1,3 +1,45 @@
+# Option to pass to Python scripts to set the C compiler.  Rewriting
+# MODULE_NAME is required to enable the _ISOMAC verbatim header
+# environment.
+sysdeps-linux-python-cc = \
+  --cc="$(CC) $(patsubst -DMODULE_NAME=%,-DMODULE_NAME=testsuite,$(CPPFLAGS))"
+
+# Additional dependencies for Python scripts.
+sysdeps-linux-python-deps = \
+  $(..)sysdeps/unix/sysv/linux/glibcsyscalls.py \
+  $(..)scripts/glibcextract.py
+
+# Invocation of the Python interpreter with the Python search path.
+sysdeps-linux-python = \
+  PYTHONPATH=$(..)scripts:$(..)sysdeps/unix/sysv/linux $(PYTHON)
+
+ifndef subdir
+# This target performs two actions:
+#
+# Replace <arch-syscall.h> with a file generated from kernel headers
+# and <fixup-asm-unistd.h>.  Both files are located via the sysdeps
+# override search path.
+#
+# Update sysdeps/unix/sysv/linux/syscall-names.list with additional
+# names found in the generated <arch-syscall.h> file, so that the
+# global system call names list is a superset of the
+# architecture-specific system call names.
+#
+# To bootstrap a new architecture, create an empty file in the right
+# place and run “make update-arch-syscall” from the top-level of a
+# configured, but not-yet-built glibc tree.
+#
+# --lock points to a file not replaced during the update operation, so
+# that mutual exclusion is achieved.
+.PHONY: update-syscall-lists
+update-syscall-lists: arch-syscall.h
+	$(sysdeps-linux-python) \
+	  sysdeps/unix/sysv/linux/update-syscall-lists.py \
+	    $(sysdeps-linux-python-cc) \
+	    --lock=sysdeps/unix/sysv/linux/update-syscall-lists.py $< \
+	    sysdeps/unix/sysv/linux/syscall-names.list
+endif
+
 ifeq ($(subdir),csu)
 sysdep_routines += errno-loc
 endif
@@ -103,6 +145,19 @@ $(objpfx)tst-syscall-list.out: \
   $(objpfx)tst-syscall-list-sys.list
 	$(BASH) $^ $(AWK) > $@; $(evaluate-test)
 
+tests-special += $(objpfx)tst-glibcsyscalls.out
+# arch-syscall.h is located via the sysdeps override search path.
+$(objpfx)tst-glibcsyscalls.out: arch-syscall.h \
+  ../sysdeps/unix/sysv/linux/syscall-names.list
+	$(sysdeps-linux-python) \
+	  ../sysdeps/unix/sysv/linux/tst-glibcsyscalls.py \
+	    $(sysdeps-linux-python-cc) $< \
+	    ../sysdeps/unix/sysv/linux/syscall-names.list \
+	  < /dev/null > $@ 2>&1; $(evaluate-test)
+$(objpfx)tst-glibcsyscalls.out: \
+  ../sysdeps/unix/sysv/linux/tst-glibcsyscalls.py \
+  $(sysdeps-linux-python-deps)
+
 # Separate object file for access to the constant from the UAPI header.
 $(objpfx)tst-sysconf-iov_max: $(objpfx)tst-sysconf-iov_max-uapi.o
 
@@ -110,12 +165,11 @@ $(objpfx)tst-pkey: $(shared-thread-library)
 
 tests-special += $(objpfx)tst-mman-consts.out
 $(objpfx)tst-mman-consts.out: ../sysdeps/unix/sysv/linux/tst-mman-consts.py
-	PYTHONPATH=../scripts \
-	$(PYTHON) ../sysdeps/unix/sysv/linux/tst-mman-consts.py \
-		   --cc="$(CC) $(patsubst -DMODULE_NAME=%, \
-					  -DMODULE_NAME=testsuite, \
-					  $(CPPFLAGS))" \
-	< /dev/null > $@ 2>&1; $(evaluate-test)
+	$(sysdeps-linux-python) \
+	  ../sysdeps/unix/sysv/linux/tst-mman-consts.py \
+	    $(sysdeps-linux-python-cc) \
+	  < /dev/null > $@ 2>&1; $(evaluate-test)
+$(objpfx)tst-mman-consts.out: $(sysdeps-linux-python-deps)
 
 $(objpfx)tst-gettid: $(shared-thread-library)
 $(objpfx)tst-gettid-kill: $(shared-thread-library)
@@ -138,12 +192,11 @@ tests-special += $(objpfx)tst-signal-numbers.out
 $(objpfx)tst-signal-numbers.out: \
 		../sysdeps/unix/sysv/linux/tst-signal-numbers.py \
 		$(objpfx)signal.o*
-	PYTHONPATH=../scripts \
-	$(PYTHON) ../sysdeps/unix/sysv/linux/tst-signal-numbers.py \
-		   --cc="$(CC) $(patsubst -DMODULE_NAME=%, \
-					  -DMODULE_NAME=testsuite, \
-					  $(CPPFLAGS))" \
-	< /dev/null > $@ 2>&1; $(evaluate-test)
+	$(sysdeps-linux-python) \
+	  ../sysdeps/unix/sysv/linux/tst-signal-numbers.py \
+	    $(sysdeps-linux-python-cc) \
+	  < /dev/null > $@ 2>&1; $(evaluate-test)
+$(objpfx)tst-signal-numbers.out: $(sysdeps-linux-python-deps)
 endif
 
 ifeq ($(subdir),socket)
diff --git a/sysdeps/unix/sysv/linux/aarch64/arch-syscall.h b/sysdeps/unix/sysv/linux/aarch64/arch-syscall.h
new file mode 100644
index 0000000000..9378387747
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/arch-syscall.h
@@ -0,0 +1,291 @@
+/* AUTOGENERATED by update-syscall-lists.py.  */
+#define __NR_accept 202
+#define __NR_accept4 242
+#define __NR_acct 89
+#define __NR_add_key 217
+#define __NR_adjtimex 171
+#define __NR_bind 200
+#define __NR_bpf 280
+#define __NR_brk 214
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_chdir 49
+#define __NR_chroot 51
+#define __NR_clock_adjtime 266
+#define __NR_clock_getres 114
+#define __NR_clock_gettime 113
+#define __NR_clock_nanosleep 115
+#define __NR_clock_settime 112
+#define __NR_clone 220
+#define __NR_close 57
+#define __NR_connect 203
+#define __NR_copy_file_range 285
+#define __NR_delete_module 106
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_eventfd2 19
+#define __NR_execve 221
+#define __NR_execveat 281
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_faccessat 48
+#define __NR_fadvise64 223
+#define __NR_fallocate 47
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_fchdir 50
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchown 55
+#define __NR_fchownat 54
+#define __NR_fcntl 25
+#define __NR_fdatasync 83
+#define __NR_fgetxattr 10
+#define __NR_finit_module 273
+#define __NR_flistxattr 13
+#define __NR_flock 32
+#define __NR_fremovexattr 16
+#define __NR_fsconfig 431
+#define __NR_fsetxattr 7
+#define __NR_fsmount 432
+#define __NR_fsopen 430
+#define __NR_fspick 433
+#define __NR_fstat 80
+#define __NR_fstatfs 44
+#define __NR_fsync 82
+#define __NR_ftruncate 46
+#define __NR_futex 98
+#define __NR_get_mempolicy 236
+#define __NR_get_robust_list 100
+#define __NR_getcpu 168
+#define __NR_getcwd 17
+#define __NR_getdents64 61
+#define __NR_getegid 177
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getgroups 158
+#define __NR_getitimer 102
+#define __NR_getpeername 205
+#define __NR_getpgid 155
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getpriority 141
+#define __NR_getrandom 278
+#define __NR_getresgid 150
+#define __NR_getresuid 148
+#define __NR_getrlimit 163
+#define __NR_getrusage 165
+#define __NR_getsid 156
+#define __NR_getsockname 204
+#define __NR_getsockopt 209
+#define __NR_gettid 178
+#define __NR_gettimeofday 169
+#define __NR_getuid 174
+#define __NR_getxattr 8
+#define __NR_init_module 105
+#define __NR_inotify_add_watch 27
+#define __NR_inotify_init1 26
+#define __NR_inotify_rm_watch 28
+#define __NR_io_cancel 3
+#define __NR_io_destroy 1
+#define __NR_io_getevents 4
+#define __NR_io_pgetevents 292
+#define __NR_io_setup 0
+#define __NR_io_submit 2
+#define __NR_io_uring_enter 426
+#define __NR_io_uring_register 427
+#define __NR_io_uring_setup 425
+#define __NR_ioctl 29
+#define __NR_ioprio_get 31
+#define __NR_ioprio_set 30
+#define __NR_kcmp 272
+#define __NR_kexec_file_load 294
+#define __NR_kexec_load 104
+#define __NR_keyctl 219
+#define __NR_kill 129
+#define __NR_lgetxattr 9
+#define __NR_linkat 37
+#define __NR_listen 201
+#define __NR_listxattr 11
+#define __NR_llistxattr 12
+#define __NR_lookup_dcookie 18
+#define __NR_lremovexattr 15
+#define __NR_lseek 62
+#define __NR_lsetxattr 6
+#define __NR_madvise 233
+#define __NR_mbind 235
+#define __NR_membarrier 283
+#define __NR_memfd_create 279
+#define __NR_migrate_pages 238
+#define __NR_mincore 232
+#define __NR_mkdirat 34
+#define __NR_mknodat 33
+#define __NR_mlock 228
+#define __NR_mlock2 284
+#define __NR_mlockall 230
+#define __NR_mmap 222
+#define __NR_mount 40
+#define __NR_move_mount 429
+#define __NR_move_pages 239
+#define __NR_mprotect 226
+#define __NR_mq_getsetattr 185
+#define __NR_mq_notify 184
+#define __NR_mq_open 180
+#define __NR_mq_timedreceive 183
+#define __NR_mq_timedsend 182
+#define __NR_mq_unlink 181
+#define __NR_mremap 216
+#define __NR_msgctl 187
+#define __NR_msgget 186
+#define __NR_msgrcv 188
+#define __NR_msgsnd 189
+#define __NR_msync 227
+#define __NR_munlock 229
+#define __NR_munlockall 231
+#define __NR_munmap 215
+#define __NR_name_to_handle_at 264
+#define __NR_nanosleep 101
+#define __NR_newfstatat 79
+#define __NR_nfsservctl 42
+#define __NR_open_by_handle_at 265
+#define __NR_open_tree 428
+#define __NR_openat 56
+#define __NR_perf_event_open 241
+#define __NR_personality 92
+#define __NR_pidfd_open 434
+#define __NR_pidfd_send_signal 424
+#define __NR_pipe2 59
+#define __NR_pivot_root 41
+#define __NR_pkey_alloc 289
+#define __NR_pkey_free 290
+#define __NR_pkey_mprotect 288
+#define __NR_ppoll 73
+#define __NR_prctl 167
+#define __NR_pread64 67
+#define __NR_preadv 69
+#define __NR_preadv2 286
+#define __NR_prlimit64 261
+#define __NR_process_vm_readv 270
+#define __NR_process_vm_writev 271
+#define __NR_pselect6 72
+#define __NR_ptrace 117
+#define __NR_pwrite64 68
+#define __NR_pwritev 70
+#define __NR_pwritev2 287
+#define __NR_quotactl 60
+#define __NR_read 63
+#define __NR_readahead 213
+#define __NR_readlinkat 78
+#define __NR_readv 65
+#define __NR_reboot 142
+#define __NR_recvfrom 207
+#define __NR_recvmmsg 243
+#define __NR_recvmsg 212
+#define __NR_remap_file_pages 234
+#define __NR_removexattr 14
+#define __NR_renameat 38
+#define __NR_renameat2 276
+#define __NR_request_key 218
+#define __NR_restart_syscall 128
+#define __NR_rseq 293
+#define __NR_rt_sigaction 134
+#define __NR_rt_sigpending 136
+#define __NR_rt_sigprocmask 135
+#define __NR_rt_sigqueueinfo 138
+#define __NR_rt_sigreturn 139
+#define __NR_rt_sigsuspend 133
+#define __NR_rt_sigtimedwait 137
+#define __NR_rt_tgsigqueueinfo 240
+#define __NR_sched_get_priority_max 125
+#define __NR_sched_get_priority_min 126
+#define __NR_sched_getaffinity 123
+#define __NR_sched_getattr 275
+#define __NR_sched_getparam 121
+#define __NR_sched_getscheduler 120
+#define __NR_sched_rr_get_interval 127
+#define __NR_sched_setaffinity 122
+#define __NR_sched_setattr 274
+#define __NR_sched_setparam 118
+#define __NR_sched_setscheduler 119
+#define __NR_sched_yield 124
+#define __NR_seccomp 277
+#define __NR_semctl 191
+#define __NR_semget 190
+#define __NR_semop 193
+#define __NR_semtimedop 192
+#define __NR_sendfile 71
+#define __NR_sendmmsg 269
+#define __NR_sendmsg 211
+#define __NR_sendto 206
+#define __NR_set_mempolicy 237
+#define __NR_set_robust_list 99
+#define __NR_set_tid_address 96
+#define __NR_setdomainname 162
+#define __NR_setfsgid 152
+#define __NR_setfsuid 151
+#define __NR_setgid 144
+#define __NR_setgroups 159
+#define __NR_sethostname 161
+#define __NR_setitimer 103
+#define __NR_setns 268
+#define __NR_setpgid 154
+#define __NR_setpriority 140
+#define __NR_setregid 143
+#define __NR_setresgid 149
+#define __NR_setresuid 147
+#define __NR_setreuid 145
+#define __NR_setrlimit 164
+#define __NR_setsid 157
+#define __NR_setsockopt 208
+#define __NR_settimeofday 170
+#define __NR_setuid 146
+#define __NR_setxattr 5
+#define __NR_shmat 196
+#define __NR_shmctl 195
+#define __NR_shmdt 197
+#define __NR_shmget 194
+#define __NR_shutdown 210
+#define __NR_sigaltstack 132
+#define __NR_signalfd4 74
+#define __NR_socket 198
+#define __NR_socketpair 199
+#define __NR_splice 76
+#define __NR_statfs 43
+#define __NR_statx 291
+#define __NR_swapoff 225
+#define __NR_swapon 224
+#define __NR_symlinkat 36
+#define __NR_sync 81
+#define __NR_sync_file_range 84
+#define __NR_syncfs 267
+#define __NR_sysinfo 179
+#define __NR_syslog 116
+#define __NR_tee 77
+#define __NR_tgkill 131
+#define __NR_timer_create 107
+#define __NR_timer_delete 111
+#define __NR_timer_getoverrun 109
+#define __NR_timer_gettime 108
+#define __NR_timer_settime 110
+#define __NR_timerfd_create 85
+#define __NR_timerfd_gettime 87
+#define __NR_timerfd_settime 86
+#define __NR_times 153
+#define __NR_tkill 130
+#define __NR_truncate 45
+#define __NR_umask 166
+#define __NR_umount2 39
+#define __NR_uname 160
+#define __NR_unlinkat 35
+#define __NR_unshare 97
+#define __NR_userfaultfd 282
+#define __NR_utimensat 88
+#define __NR_vhangup 58
+#define __NR_vmsplice 75
+#define __NR_wait4 260
+#define __NR_waitid 95
+#define __NR_write 64
+#define __NR_writev 66
diff --git a/sysdeps/unix/sysv/linux/alpha/arch-syscall.h b/sysdeps/unix/sysv/linux/alpha/arch-syscall.h
new file mode 100644
index 0000000000..5c8f92c813
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/alpha/arch-syscall.h
@@ -0,0 +1,469 @@
+/* AUTOGENERATED by update-syscall-lists.py.  */
+#define __NR__sysctl 319
+#define __NR_accept 99
+#define __NR_accept4 502
+#define __NR_access 33
+#define __NR_acct 51
+#define __NR_add_key 439
+#define __NR_adjtimex 366
+#define __NR_afs_syscall 338
+#define __NR_bdflush 300
+#define __NR_bind 104
+#define __NR_bpf 515
+#define __NR_brk 17
+#define __NR_capget 368
+#define __NR_capset 369
+#define __NR_chdir 12
+#define __NR_chmod 15
+#define __NR_chown 16
+#define __NR_chroot 61
+#define __NR_clock_adjtime 499
+#define __NR_clock_getres 421
+#define __NR_clock_gettime 420
+#define __NR_clock_nanosleep 422
+#define __NR_clock_settime 419
+#define __NR_clone 312
+#define __NR_close 6
+#define __NR_connect 98
+#define __NR_copy_file_range 519
+#define __NR_create_module 306
+#define __NR_delete_module 308
+#define __NR_dipc 373
+#define __NR_dup 41
+#define __NR_dup2 90
+#define __NR_dup3 487
+#define __NR_epoll_create 407
+#define __NR_epoll_create1 486
+#define __NR_epoll_ctl 408
+#define __NR_epoll_pwait 474
+#define __NR_epoll_wait 409
+#define __NR_eventfd 478
+#define __NR_eventfd2 485
+#define __NR_exec_with_loader 25
+#define __NR_execve 59
+#define __NR_execveat 513
+#define __NR_exit 1
+#define __NR_exit_group 405
+#define __NR_faccessat 462
+#define __NR_fadvise64 413
+#define __NR_fallocate 480
+#define __NR_fanotify_init 494
+#define __NR_fanotify_mark 495
+#define __NR_fchdir 13
+#define __NR_fchmod 124
+#define __NR_fchmodat 461
+#define __NR_fchown 123
+#define __NR_fchownat 453
+#define __NR_fcntl 92
+#define __NR_fdatasync 447
+#define __NR_fgetxattr 387
+#define __NR_finit_module 507
+#define __NR_flistxattr 390
+#define __NR_flock 13