compat_wrapper.s

linux 内核源代码

/*
*  arch/s390/kernel/compat_wrapper.S
*    wrapper for 31 bit compatible system calls.
*
*    Copyright (C) IBM Corp. 2000,2006
*    Author(s): Gerhard Tonn ([e-mail]),
*		Thomas Spatzier ([e-mail])
*/

	.globl	sys32_exit_wrapper
sys32_exit_wrapper:
	lgfr	%r2,%r2			# int
	jg	sys_exit		# branch to sys_exit

	.globl	sys32_read_wrapper
sys32_read_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# char *
	llgfr	%r4,%r4			# size_t
	jg	sys32_read		# branch to sys_read

	.globl	sys32_write_wrapper
sys32_write_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# const char *
	llgfr	%r4,%r4			# size_t
	jg	sys32_write		# branch to system call

	.globl	sys32_open_wrapper
sys32_open_wrapper:
	llgtr	%r2,%r2			# const char *
	lgfr	%r3,%r3			# int
	lgfr	%r4,%r4			# int
	jg	sys_open		# branch to system call

	.globl	sys32_close_wrapper
sys32_close_wrapper:
	llgfr	%r2,%r2			# unsigned int
	jg	sys_close		# branch to system call

	.globl	sys32_creat_wrapper
sys32_creat_wrapper:
	llgtr	%r2,%r2			# const char *
	lgfr	%r3,%r3			# int
	jg	sys_creat		# branch to system call

	.globl	sys32_link_wrapper
sys32_link_wrapper:
	llgtr	%r2,%r2			# const char *
	llgtr	%r3,%r3			# const char *
	jg	sys_link		# branch to system call

	.globl	sys32_unlink_wrapper
sys32_unlink_wrapper:
	llgtr	%r2,%r2			# const char *
	jg	sys_unlink		# branch to system call

	.globl	sys32_chdir_wrapper
sys32_chdir_wrapper:
	llgtr	%r2,%r2			# const char *
	jg	sys_chdir		# branch to system call

	.globl	sys32_time_wrapper
sys32_time_wrapper:
	llgtr	%r2,%r2			# int *
	jg	compat_sys_time		# branch to system call

	.globl	sys32_mknod_wrapper
sys32_mknod_wrapper:
	llgtr	%r2,%r2			# const char *
	lgfr	%r3,%r3			# int
	llgfr	%r4,%r4			# dev
	jg	sys_mknod		# branch to system call

	.globl	sys32_chmod_wrapper
sys32_chmod_wrapper:
	llgtr	%r2,%r2			# const char *
	llgfr	%r3,%r3			# mode_t
	jg	sys_chmod		# branch to system call

	.globl	sys32_lchown16_wrapper
sys32_lchown16_wrapper:
	llgtr	%r2,%r2			# const char *
	llgfr	%r3,%r3			# __kernel_old_uid_emu31_t
	llgfr	%r4,%r4			# __kernel_old_uid_emu31_t
	jg	sys32_lchown16		# branch to system call

	.globl	sys32_lseek_wrapper
sys32_lseek_wrapper:
	llgfr	%r2,%r2			# unsigned int
	lgfr	%r3,%r3			# off_t
	llgfr	%r4,%r4			# unsigned int
	jg	sys_lseek		# branch to system call

#sys32_getpid_wrapper				# void

	.globl	sys32_mount_wrapper
sys32_mount_wrapper:
	llgtr	%r2,%r2			# char *
	llgtr	%r3,%r3			# char *
	llgtr	%r4,%r4			# char *
	llgfr	%r5,%r5			# unsigned long
	llgtr	%r6,%r6			# void *
	jg	compat_sys_mount	# branch to system call

	.globl	sys32_oldumount_wrapper
sys32_oldumount_wrapper:
	llgtr	%r2,%r2			# char *
	jg	sys_oldumount		# branch to system call

	.globl	sys32_setuid16_wrapper
sys32_setuid16_wrapper:
	llgfr	%r2,%r2			# __kernel_old_uid_emu31_t
	jg	sys32_setuid16		# branch to system call

#sys32_getuid16_wrapper			# void

	.globl	sys32_ptrace_wrapper
sys32_ptrace_wrapper:
	lgfr	%r2,%r2			# long
	lgfr	%r3,%r3			# long
	llgtr	%r4,%r4			# long
	llgfr	%r5,%r5			# long
	jg	sys_ptrace		# branch to system call

	.globl	sys32_alarm_wrapper
sys32_alarm_wrapper:
	llgfr	%r2,%r2			# unsigned int
	jg	sys_alarm		# branch to system call

#sys32_pause_wrapper			# void

	.globl	compat_sys_utime_wrapper
compat_sys_utime_wrapper:
	llgtr	%r2,%r2			# char *
	llgtr	%r3,%r3			# struct compat_utimbuf *
	jg	compat_sys_utime	# branch to system call

	.globl	sys32_access_wrapper
sys32_access_wrapper:
	llgtr	%r2,%r2			# const char *
	lgfr	%r3,%r3			# int
	jg	sys_access		# branch to system call

	.globl	sys32_nice_wrapper
sys32_nice_wrapper:
	lgfr	%r2,%r2			# int
	jg	sys_nice		# branch to system call

#sys32_sync_wrapper			# void

	.globl	sys32_kill_wrapper
sys32_kill_wrapper:
	lgfr	%r2,%r2			# int
	lgfr	%r3,%r3			# int
	jg	sys_kill		# branch to system call

	.globl	sys32_rename_wrapper
sys32_rename_wrapper:
	llgtr	%r2,%r2			# const char *
	llgtr	%r3,%r3			# const char *
	jg	sys_rename		# branch to system call

	.globl	sys32_mkdir_wrapper
sys32_mkdir_wrapper:
	llgtr	%r2,%r2			# const char *
	lgfr	%r3,%r3			# int
	jg	sys_mkdir		# branch to system call

	.globl	sys32_rmdir_wrapper
sys32_rmdir_wrapper:
	llgtr	%r2,%r2			# const char *
	jg	sys_rmdir		# branch to system call

	.globl	sys32_dup_wrapper
sys32_dup_wrapper:
	llgfr	%r2,%r2			# unsigned int
	jg	sys_dup			# branch to system call

	.globl	sys32_pipe_wrapper
sys32_pipe_wrapper:
	llgtr	%r2,%r2			# u32 *
	jg	sys_pipe		# branch to system call

	.globl	compat_sys_times_wrapper
compat_sys_times_wrapper:
	llgtr	%r2,%r2			# struct compat_tms *
	jg	compat_sys_times	# branch to system call

	.globl	sys32_brk_wrapper
sys32_brk_wrapper:
	llgtr	%r2,%r2			# unsigned long
	jg	sys_brk			# branch to system call

	.globl	sys32_setgid16_wrapper
sys32_setgid16_wrapper:
	llgfr	%r2,%r2			# __kernel_old_gid_emu31_t
	jg	sys32_setgid16		# branch to system call

#sys32_getgid16_wrapper			# void

	.globl sys32_signal_wrapper
sys32_signal_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# __sighandler_t
	jg	sys_signal

#sys32_geteuid16_wrapper		# void

#sys32_getegid16_wrapper		# void

	.globl	sys32_acct_wrapper
sys32_acct_wrapper:
	llgtr	%r2,%r2			# char *
	jg	sys_acct		# branch to system call

	.globl	sys32_umount_wrapper
sys32_umount_wrapper:
	llgtr	%r2,%r2			# char *
	lgfr	%r3,%r3			# int
	jg	sys_umount		# branch to system call

	.globl	compat_sys_ioctl_wrapper
compat_sys_ioctl_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgfr	%r3,%r3			# unsigned int
	llgfr	%r4,%r4			# unsigned int
	jg	compat_sys_ioctl	# branch to system call

	.globl	compat_sys_fcntl_wrapper
compat_sys_fcntl_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgfr	%r3,%r3			# unsigned int
	llgfr	%r4,%r4			# unsigned long
	jg	compat_sys_fcntl	# branch to system call

	.globl	sys32_setpgid_wrapper
sys32_setpgid_wrapper:
	lgfr	%r2,%r2			# pid_t
	lgfr	%r3,%r3			# pid_t
	jg	sys_setpgid		# branch to system call

	.globl	sys32_umask_wrapper
sys32_umask_wrapper:
	lgfr	%r2,%r2			# int
	jg	sys_umask		# branch to system call

	.globl	sys32_chroot_wrapper
sys32_chroot_wrapper:
	llgtr	%r2,%r2			# char *
	jg	sys_chroot		# branch to system call

	.globl sys32_ustat_wrapper
sys32_ustat_wrapper:
	llgfr	%r2,%r2			# dev_t
	llgtr	%r3,%r3			# struct ustat *
	jg	sys_ustat

	.globl	sys32_dup2_wrapper
sys32_dup2_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgfr	%r3,%r3			# unsigned int
	jg	sys_dup2		# branch to system call

#sys32_getppid_wrapper			# void

#sys32_getpgrp_wrapper			# void

#sys32_setsid_wrapper			# void

	.globl	sys32_sigaction_wrapper
sys32_sigaction_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# const struct old_sigaction *
	llgtr	%r4,%r4			# struct old_sigaction32 *
	jg	sys32_sigaction		# branch to system call

	.globl	sys32_setreuid16_wrapper
sys32_setreuid16_wrapper:
	llgfr	%r2,%r2			# __kernel_old_uid_emu31_t
	llgfr	%r3,%r3			# __kernel_old_uid_emu31_t
	jg	sys32_setreuid16	# branch to system call

	.globl	sys32_setregid16_wrapper
sys32_setregid16_wrapper:
	llgfr	%r2,%r2			# __kernel_old_gid_emu31_t
	llgfr	%r3,%r3			# __kernel_old_gid_emu31_t
	jg	sys32_setregid16	# branch to system call

	.globl sys_sigsuspend_wrapper
sys_sigsuspend_wrapper:
	lgfr	%r2,%r2			# int
	lgfr	%r3,%r3			# int
	llgfr	%r4,%r4			# old_sigset_t
	jg	sys_sigsuspend

	.globl	compat_sys_sigpending_wrapper
compat_sys_sigpending_wrapper:
	llgtr	%r2,%r2			# compat_old_sigset_t *
	jg	compat_sys_sigpending	# branch to system call

	.globl	sys32_sethostname_wrapper
sys32_sethostname_wrapper:
	llgtr	%r2,%r2			# char *
	lgfr	%r3,%r3			# int
	jg	sys_sethostname		# branch to system call

	.globl	compat_sys_setrlimit_wrapper
compat_sys_setrlimit_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# struct rlimit_emu31 *
	jg	compat_sys_setrlimit	# branch to system call

	.globl	compat_sys_old_getrlimit_wrapper
compat_sys_old_getrlimit_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# struct rlimit_emu31 *
	jg	compat_sys_old_getrlimit # branch to system call

	.globl	compat_sys_getrlimit_wrapper
compat_sys_getrlimit_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# struct rlimit_emu31 *
	jg	compat_sys_getrlimit	# branch to system call

	.globl	sys32_mmap2_wrapper
sys32_mmap2_wrapper:
	llgtr	%r2,%r2			# struct mmap_arg_struct_emu31 *
	jg	sys32_mmap2			# branch to system call

	.globl	compat_sys_getrusage_wrapper
compat_sys_getrusage_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# struct rusage_emu31 *
	jg	compat_sys_getrusage	# branch to system call

	.globl	sys32_gettimeofday_wrapper
sys32_gettimeofday_wrapper:
	llgtr	%r2,%r2			# struct timeval_emu31 *
	llgtr	%r3,%r3			# struct timezone *
	jg	sys32_gettimeofday	# branch to system call

	.globl	sys32_settimeofday_wrapper
sys32_settimeofday_wrapper:
	llgtr	%r2,%r2			# struct timeval_emu31 *
	llgtr	%r3,%r3			# struct timezone *
	jg	sys32_settimeofday	# branch to system call

	.globl	sys32_getgroups16_wrapper
sys32_getgroups16_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# __kernel_old_gid_emu31_t *
	jg	sys32_getgroups16	# branch to system call

	.globl	sys32_setgroups16_wrapper
sys32_setgroups16_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# __kernel_old_gid_emu31_t *
	jg	sys32_setgroups16	# branch to system call

	.globl	sys32_symlink_wrapper
sys32_symlink_wrapper:
	llgtr	%r2,%r2			# const char *
	llgtr	%r3,%r3			# const char *
	jg	sys_symlink		# branch to system call

	.globl	sys32_readlink_wrapper
sys32_readlink_wrapper:
	llgtr	%r2,%r2			# const char *
	llgtr	%r3,%r3			# char *
	lgfr	%r4,%r4			# int
	jg	sys_readlink		# branch to system call

	.globl	sys32_uselib_wrapper
sys32_uselib_wrapper:
	llgtr	%r2,%r2			# const char *
	jg	sys_uselib		# branch to system call

	.globl	sys32_swapon_wrapper
sys32_swapon_wrapper:
	llgtr	%r2,%r2			# const char *
	lgfr	%r3,%r3			# int
	jg	sys_swapon		# branch to system call

	.globl	sys32_reboot_wrapper
sys32_reboot_wrapper:
	lgfr	%r2,%r2			# int
	lgfr	%r3,%r3			# int
	llgfr	%r4,%r4			# unsigned int
	llgtr	%r5,%r5			# void *
	jg	sys_reboot		# branch to system call

	.globl	old32_readdir_wrapper
old32_readdir_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# void *
	llgfr	%r4,%r4			# unsigned int
	jg	compat_sys_old_readdir	# branch to system call

	.globl	old32_mmap_wrapper
old32_mmap_wrapper:
	llgtr	%r2,%r2			# struct mmap_arg_struct_emu31 *
	jg	old32_mmap		# branch to system call

	.globl	sys32_munmap_wrapper
sys32_munmap_wrapper:
	llgfr	%r2,%r2			# unsigned long
	llgfr	%r3,%r3			# size_t
	jg	sys_munmap		# branch to system call

	.globl	sys32_truncate_wrapper
sys32_truncate_wrapper:
	llgtr	%r2,%r2			# const char *
	llgfr	%r3,%r3			# unsigned long
	jg	sys_truncate		# branch to system call

	.globl	sys32_ftruncate_wrapper
sys32_ftruncate_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgfr	%r3,%r3			# unsigned long
	jg	sys_ftruncate		# branch to system call

	.globl	sys32_fchmod_wrapper
sys32_fchmod_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgfr	%r3,%r3			# mode_t
	jg	sys_fchmod		# branch to system call

	.globl	sys32_fchown16_wrapper
sys32_fchown16_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgfr	%r3,%r3			# compat_uid_t
	llgfr	%r4,%r4			# compat_uid_t
	jg	sys32_fchown16		# branch to system call

	.globl	sys32_getpriority_wrapper
sys32_getpriority_wrapper:
	lgfr	%r2,%r2			# int
	lgfr	%r3,%r3			# int
	jg	sys_getpriority		# branch to system call

	.globl	sys32_setpriority_wrapper
sys32_setpriority_wrapper:
	lgfr	%r2,%r2			# int
	lgfr	%r3,%r3			# int
	lgfr	%r4,%r4			# int
	jg	sys_setpriority		# branch to system call

	.globl	compat_sys_statfs_wrapper
compat_sys_statfs_wrapper:
	llgtr	%r2,%r2			# char *
	llgtr	%r3,%r3			# struct compat_statfs *
	jg	compat_sys_statfs	# branch to system call

	.globl	compat_sys_fstatfs_wrapper
compat_sys_fstatfs_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# struct compat_statfs *
	jg	compat_sys_fstatfs	# branch to system call

	.globl	compat_sys_socketcall_wrapper
compat_sys_socketcall_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# u32 *
	jg	compat_sys_socketcall	# branch to system call

	.globl	sys32_syslog_wrapper
sys32_syslog_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# char *
	lgfr	%r4,%r4			# int
	jg	sys_syslog		# branch to system call

	.globl	compat_sys_setitimer_wrapper
compat_sys_setitimer_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# struct itimerval_emu31 *
	llgtr	%r4,%r4			# struct itimerval_emu31 *
	jg	compat_sys_setitimer	# branch to system call

	.globl	compat_sys_getitimer_wrapper
compat_sys_getitimer_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# struct itimerval_emu31 *
	jg	compat_sys_getitimer	# branch to system call

	.globl	compat_sys_newstat_wrapper
compat_sys_newstat_wrapper:
	llgtr	%r2,%r2			# char *
	llgtr	%r3,%r3			# struct stat_emu31 *
	jg	compat_sys_newstat	# branch to system call

	.globl	compat_sys_newlstat_wrapper
compat_sys_newlstat_wrapper:
	llgtr	%r2,%r2			# char *
	llgtr	%r3,%r3			# struct stat_emu31 *
	jg	compat_sys_newlstat	# branch to system call

	.globl	compat_sys_newfstat_wrapper
compat_sys_newfstat_wrapper:
	llgfr	%r2,%r2			# unsigned int
	llgtr	%r3,%r3			# struct stat_emu31 *
	jg	compat_sys_newfstat	# branch to system call

#sys32_vhangup_wrapper			# void

	.globl	compat_sys_wait4_wrapper
compat_sys_wait4_wrapper:
	lgfr	%r2,%r2			# pid_t
	llgtr	%r3,%r3			# unsigned int *
	lgfr	%r4,%r4			# int
	llgtr	%r5,%r5			# struct rusage *
	jg	compat_sys_wait4	# branch to system call

	.globl	sys32_swapoff_wrapper
sys32_swapoff_wrapper:
	llgtr	%r2,%r2			# const char *
	jg	sys_swapoff		# branch to system call

	.globl	compat_sys_sysinfo_wrapper
compat_sys_sysinfo_wrapper:
	llgtr	%r2,%r2			# struct sysinfo_emu31 *
	jg	compat_sys_sysinfo	# branch to system call

	.globl	sys32_ipc_wrapper
sys32_ipc_wrapper:
	llgfr	%r2,%r2			# uint
	lgfr	%r3,%r3			# int
	lgfr	%r4,%r4			# int
	lgfr	%r5,%r5			# int
	llgfr	%r6,%r6			# u32
	jg	sys32_ipc		# branch to system call

	.globl	sys32_fsync_wrapper
sys32_fsync_wrapper:
	llgfr	%r2,%r2			# unsigned int
	jg	sys_fsync		# branch to system call

#sys32_sigreturn_wrapper		# done in sigreturn_glue

#sys32_clone_wrapper			# done in clone_glue

	.globl	sys32_setdomainname_wrapper
sys32_setdomainname_wrapper:
	llgtr	%r2,%r2			# char *
	lgfr	%r3,%r3			# int
	jg	sys_setdomainname	# branch to system call

	.globl	sys32_newuname_wrapper
sys32_newuname_wrapper:
	llgtr	%r2,%r2			# struct new_utsname *
	jg	s390x_newuname		# branch to system call

	.globl	compat_sys_adjtimex_wrapper
compat_sys_adjtimex_wrapper:
	llgtr	%r2,%r2			# struct compat_timex *
	jg	compat_sys_adjtimex	# branch to system call

	.globl	sys32_mprotect_wrapper
sys32_mprotect_wrapper:
	llgtr	%r2,%r2			# unsigned long (actually pointer
	llgfr	%r3,%r3			# size_t
	llgfr	%r4,%r4			# unsigned long
	jg	sys_mprotect		# branch to system call

	.globl	compat_sys_sigprocmask_wrapper
compat_sys_sigprocmask_wrapper:
	lgfr	%r2,%r2			# int
	llgtr	%r3,%r3			# compat_old_sigset_t *
	llgtr	%r4,%r4			# compat_old_sigset_t *
	jg	compat_sys_sigprocmask		# branch to system call

	.globl	sys32_init_module_wrapper
sys32_init_module_wrapper:
	llgtr	%r2,%r2			# void *