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-rwxr-xr-xscripts/checksyscalls.sh273
1 files changed, 273 insertions, 0 deletions
diff --git a/scripts/checksyscalls.sh b/scripts/checksyscalls.sh
new file mode 100755
index 0000000000..1e5d2eeb72
--- /dev/null
+++ b/scripts/checksyscalls.sh
@@ -0,0 +1,273 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Check if current architecture are missing any function calls compared
+# to i386.
+# i386 define a number of legacy system calls that are i386 specific
+# and listed below so they are ignored.
+#
+# Usage:
+# checksyscalls.sh gcc gcc-options
+#
+
+ignore_list() {
+cat << EOF
+#include <asm/types.h>
+#include <asm/unistd.h>
+
+/* *at */
+#define __IGNORE_open /* openat */
+#define __IGNORE_link /* linkat */
+#define __IGNORE_unlink /* unlinkat */
+#define __IGNORE_mknod /* mknodat */
+#define __IGNORE_chmod /* fchmodat */
+#define __IGNORE_chown /* fchownat */
+#define __IGNORE_mkdir /* mkdirat */
+#define __IGNORE_rmdir /* unlinkat */
+#define __IGNORE_lchown /* fchownat */
+#define __IGNORE_access /* faccessat */
+#define __IGNORE_rename /* renameat2 */
+#define __IGNORE_readlink /* readlinkat */
+#define __IGNORE_symlink /* symlinkat */
+#define __IGNORE_utimes /* futimesat */
+#define __IGNORE_stat /* fstatat */
+#define __IGNORE_lstat /* fstatat */
+#define __IGNORE_stat64 /* fstatat64 */
+#define __IGNORE_lstat64 /* fstatat64 */
+
+#ifndef __ARCH_WANT_SET_GET_RLIMIT
+#define __IGNORE_getrlimit /* getrlimit */
+#define __IGNORE_setrlimit /* setrlimit */
+#endif
+
+#ifndef __ARCH_WANT_MEMFD_SECRET
+#define __IGNORE_memfd_secret
+#endif
+
+/* Missing flags argument */
+#define __IGNORE_renameat /* renameat2 */
+
+/* CLOEXEC flag */
+#define __IGNORE_pipe /* pipe2 */
+#define __IGNORE_dup2 /* dup3 */
+#define __IGNORE_epoll_create /* epoll_create1 */
+#define __IGNORE_inotify_init /* inotify_init1 */
+#define __IGNORE_eventfd /* eventfd2 */
+#define __IGNORE_signalfd /* signalfd4 */
+
+/* MMU */
+#ifndef CONFIG_MMU
+#define __IGNORE_madvise
+#define __IGNORE_mbind
+#define __IGNORE_mincore
+#define __IGNORE_mlock
+#define __IGNORE_mlockall
+#define __IGNORE_munlock
+#define __IGNORE_munlockall
+#define __IGNORE_mprotect
+#define __IGNORE_msync
+#define __IGNORE_migrate_pages
+#define __IGNORE_move_pages
+#define __IGNORE_remap_file_pages
+#define __IGNORE_get_mempolicy
+#define __IGNORE_set_mempolicy
+#define __IGNORE_swapoff
+#define __IGNORE_swapon
+#endif
+
+/* System calls for 32-bit kernels only */
+#if BITS_PER_LONG == 64
+#define __IGNORE_sendfile64
+#define __IGNORE_ftruncate64
+#define __IGNORE_truncate64
+#define __IGNORE_stat64
+#define __IGNORE_lstat64
+#define __IGNORE_fcntl64
+#define __IGNORE_fadvise64_64
+#define __IGNORE_fstatfs64
+#define __IGNORE_statfs64
+#define __IGNORE_llseek
+#define __IGNORE_mmap2
+#define __IGNORE_clock_gettime64
+#define __IGNORE_clock_settime64
+#define __IGNORE_clock_adjtime64
+#define __IGNORE_clock_getres_time64
+#define __IGNORE_clock_nanosleep_time64
+#define __IGNORE_timer_gettime64
+#define __IGNORE_timer_settime64
+#define __IGNORE_timerfd_gettime64
+#define __IGNORE_timerfd_settime64
+#define __IGNORE_utimensat_time64
+#define __IGNORE_pselect6_time64
+#define __IGNORE_ppoll_time64
+#define __IGNORE_io_pgetevents_time64
+#define __IGNORE_recvmmsg_time64
+#define __IGNORE_mq_timedsend_time64
+#define __IGNORE_mq_timedreceive_time64
+#define __IGNORE_semtimedop_time64
+#define __IGNORE_rt_sigtimedwait_time64
+#define __IGNORE_futex_time64
+#define __IGNORE_sched_rr_get_interval_time64
+#else
+#define __IGNORE_sendfile
+#define __IGNORE_ftruncate
+#define __IGNORE_truncate
+#define __IGNORE_stat
+#define __IGNORE_lstat
+#define __IGNORE_fcntl
+#define __IGNORE_fadvise64
+#define __IGNORE_newfstatat
+#define __IGNORE_fstatfs
+#define __IGNORE_statfs
+#define __IGNORE_lseek
+#define __IGNORE_mmap
+#define __IGNORE_clock_gettime
+#define __IGNORE_clock_settime
+#define __IGNORE_clock_adjtime
+#define __IGNORE_clock_getres
+#define __IGNORE_clock_nanosleep
+#define __IGNORE_timer_gettime
+#define __IGNORE_timer_settime
+#define __IGNORE_timerfd_gettime
+#define __IGNORE_timerfd_settime
+#define __IGNORE_utimensat
+#define __IGNORE_pselect6
+#define __IGNORE_ppoll
+#define __IGNORE_io_pgetevents
+#define __IGNORE_recvmmsg
+#define __IGNORE_mq_timedsend
+#define __IGNORE_mq_timedreceive
+#define __IGNORE_semtimedop
+#define __IGNORE_rt_sigtimedwait
+#define __IGNORE_futex
+#define __IGNORE_sched_rr_get_interval
+#define __IGNORE_gettimeofday
+#define __IGNORE_settimeofday
+#define __IGNORE_wait4
+#define __IGNORE_adjtimex
+#define __IGNORE_nanosleep
+#define __IGNORE_io_getevents
+#define __IGNORE_recvmmsg
+#endif
+
+/* i386-specific or historical system calls */
+#define __IGNORE_break
+#define __IGNORE_stty
+#define __IGNORE_gtty
+#define __IGNORE_ftime
+#define __IGNORE_prof
+#define __IGNORE_lock
+#define __IGNORE_mpx
+#define __IGNORE_ulimit
+#define __IGNORE_profil
+#define __IGNORE_ioperm
+#define __IGNORE_iopl
+#define __IGNORE_idle
+#define __IGNORE_modify_ldt
+#define __IGNORE_ugetrlimit
+#define __IGNORE_vm86
+#define __IGNORE_vm86old
+#define __IGNORE_set_thread_area
+#define __IGNORE_get_thread_area
+#define __IGNORE_madvise1
+#define __IGNORE_oldstat
+#define __IGNORE_oldfstat
+#define __IGNORE_oldlstat
+#define __IGNORE_oldolduname
+#define __IGNORE_olduname
+#define __IGNORE_umount
+#define __IGNORE_waitpid
+#define __IGNORE_stime
+#define __IGNORE_nice
+#define __IGNORE_signal
+#define __IGNORE_sigaction
+#define __IGNORE_sgetmask
+#define __IGNORE_sigsuspend
+#define __IGNORE_sigpending
+#define __IGNORE_ssetmask
+#define __IGNORE_readdir
+#define __IGNORE_socketcall
+#define __IGNORE_ipc
+#define __IGNORE_sigreturn
+#define __IGNORE_sigprocmask
+#define __IGNORE_bdflush
+#define __IGNORE__llseek
+#define __IGNORE__newselect
+#define __IGNORE_create_module
+#define __IGNORE_query_module
+#define __IGNORE_get_kernel_syms
+#define __IGNORE_sysfs
+#define __IGNORE_uselib
+#define __IGNORE__sysctl
+#define __IGNORE_arch_prctl
+#define __IGNORE_nfsservctl
+
+/* ... including the "new" 32-bit uid syscalls */
+#define __IGNORE_lchown32
+#define __IGNORE_getuid32
+#define __IGNORE_getgid32
+#define __IGNORE_geteuid32
+#define __IGNORE_getegid32
+#define __IGNORE_setreuid32
+#define __IGNORE_setregid32
+#define __IGNORE_getgroups32
+#define __IGNORE_setgroups32
+#define __IGNORE_fchown32
+#define __IGNORE_setresuid32
+#define __IGNORE_getresuid32
+#define __IGNORE_setresgid32
+#define __IGNORE_getresgid32
+#define __IGNORE_chown32
+#define __IGNORE_setuid32
+#define __IGNORE_setgid32
+#define __IGNORE_setfsuid32
+#define __IGNORE_setfsgid32
+
+/* these can be expressed using other calls */
+#define __IGNORE_alarm /* setitimer */
+#define __IGNORE_creat /* open */
+#define __IGNORE_fork /* clone */
+#define __IGNORE_futimesat /* utimensat */
+#define __IGNORE_getpgrp /* getpgid */
+#define __IGNORE_getdents /* getdents64 */
+#define __IGNORE_pause /* sigsuspend */
+#define __IGNORE_poll /* ppoll */
+#define __IGNORE_select /* pselect6 */
+#define __IGNORE_epoll_wait /* epoll_pwait */
+#define __IGNORE_time /* gettimeofday */
+#define __IGNORE_uname /* newuname */
+#define __IGNORE_ustat /* statfs */
+#define __IGNORE_utime /* utimes */
+#define __IGNORE_vfork /* clone */
+
+/* sync_file_range had a stupid ABI. Allow sync_file_range2 instead */
+#ifdef __NR_sync_file_range2
+#define __IGNORE_sync_file_range
+#endif
+
+/* Unmerged syscalls for AFS, STREAMS, etc. */
+#define __IGNORE_afs_syscall
+#define __IGNORE_getpmsg
+#define __IGNORE_putpmsg
+#define __IGNORE_vserver
+
+/* 64-bit ports never needed these, and new 32-bit ports can use statx */
+#define __IGNORE_fstat64
+#define __IGNORE_fstatat64
+
+/* Newer ports are not required to provide fstat in favor of statx */
+#define __IGNORE_fstat
+EOF
+}
+
+syscall_list() {
+ grep '^[0-9]' "$1" | sort -n |
+ while read nr abi name entry ; do
+ echo "#if !defined(__NR_${name}) && !defined(__IGNORE_${name})"
+ echo "#warning syscall ${name} not implemented"
+ echo "#endif"
+ done
+}
+
+(ignore_list && syscall_list $(dirname $0)/../arch/x86/entry/syscalls/syscall_32.tbl) | \
+$* -Wno-error -Wno-unused-macros -E -x c - > /dev/null