#!/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 */
  #if BITS_PER_LONG == 64
  #define __IGNORE_stat		/* fstatat */
  #define __IGNORE_lstat		/* fstatat */
  #else
  #define __IGNORE_stat64		/* fstatat64 */
  #define __IGNORE_lstat64	/* fstatat64 */
  #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_fstat64
  #define __IGNORE_fcntl64
  #define __IGNORE_fadvise64_64
  #define __IGNORE_fstatat64
  #define __IGNORE_fstatfs64
  #define __IGNORE_statfs64

  #define __IGNORE_llseek
  #define __IGNORE_mmap2
  #else
  #define __IGNORE_sendfile
  #define __IGNORE_ftruncate
  #define __IGNORE_truncate
  #define __IGNORE_stat
  #define __IGNORE_lstat
  #define __IGNORE_fstat
  #define __IGNORE_fcntl
  #define __IGNORE_fadvise64
  #define __IGNORE_newfstatat
  #define __IGNORE_fstatfs
  #define __IGNORE_statfs
  #define __IGNORE_lseek
  #define __IGNORE_mmap

  #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

  /* ... 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
  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) | \

  $* -E -x c - > /dev/null