s390/compat: convert to COMPAT_SYSCALL_DEFINEx part 1

Convert s390 specific system calls to to the new COMPAT_SYSCALL_DEFINE macro.
This allows us to get rid of the assembly compat wrappers.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

arch/s390/kernel/compat_linux.c

@@ -86,27 +86,29 @@
 #define SET_STAT_UID(stat, uid)		(stat).st_uid = high2lowuid(uid)
 #define SET_STAT_GID(stat, gid)		(stat).st_gid = high2lowgid(gid)
 
-asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
+COMPAT_SYSCALL_DEFINE3(s390_chown16, const char __user *, filename,
+		       u16, user, u16, group)
 {
 	return sys_chown(filename, low2highuid(user), low2highgid(group));
 }
 
-asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
+COMPAT_SYSCALL_DEFINE3(s390_lchown16, const char __user *,
+		       filename, u16, user, u16, group)
 {
 	return sys_lchown(filename, low2highuid(user), low2highgid(group));
 }
 
-asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
+COMPAT_SYSCALL_DEFINE3(s390_fchown16, unsigned int, fd, u16, user, u16, group)
 {
 	return sys_fchown(fd, low2highuid(user), low2highgid(group));
 }
 
-asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
+COMPAT_SYSCALL_DEFINE2(s390_setregid16, u16, rgid, u16, egid)
 {
 	return sys_setregid(low2highgid(rgid), low2highgid(egid));
 }
 
-asmlinkage long sys32_setgid16(u16 gid)
+COMPAT_SYSCALL_DEFINE1(s390_setgid16, u16, gid)
 {
 	return sys_setgid((gid_t)gid);
 }

arch/s390/kernel/compat_linux.h

@@ -76,11 +76,11 @@ struct stat64_emu31;
 struct mmap_arg_struct_emu31;
 struct fadvise64_64_args;
 
-long sys32_chown16(const char __user * filename, u16 user, u16 group);
-long sys32_lchown16(const char __user * filename, u16 user, u16 group);
-long sys32_fchown16(unsigned int fd, u16 user, u16 group);
-long sys32_setregid16(u16 rgid, u16 egid);
-long sys32_setgid16(u16 gid);
+long compat_sys_s390_chown16(const char __user *filename, u16 user, u16 group);
+long compat_sys_s390_lchown16(const char __user *filename, u16 user, u16 group);
+long compat_sys_s390_fchown16(unsigned int fd, u16 user, u16 group);
+long compat_sys_s390_setregid16(u16 rgid, u16 egid);
+long compat_sys_s390_setgid16(u16 gid);
 long sys32_setreuid16(u16 ruid, u16 euid);
 long sys32_setuid16(u16 uid);
 long sys32_setresuid16(u16 ruid, u16 euid, u16 suid);

arch/s390/kernel/compat_wrapper.S

@@ -61,12 +61,6 @@ ENTRY(sys32_chmod_wrapper)
 	llgfr	%r3,%r3			# mode_t
 	jg	sys_chmod		# branch to system call
 
-ENTRY(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
-
 #sys32_getpid_wrapper				# void
 
 ENTRY(sys32_mount_wrapper)
@@ -149,10 +143,6 @@ ENTRY(sys32_brk_wrapper)
 	llgtr	%r2,%r2			# unsigned long
 	jg	sys_brk			# branch to system call
 
-ENTRY(sys32_setgid16_wrapper)
-	llgfr	%r2,%r2			# __kernel_old_gid_emu31_t
-	jg	sys32_setgid16		# branch to system call
-
 #sys32_getgid16_wrapper			# void
 
 ENTRY(sys32_signal_wrapper)
@@ -219,11 +209,6 @@ ENTRY(sys32_setreuid16_wrapper)
 	llgfr	%r3,%r3			# __kernel_old_uid_emu31_t
 	jg	sys32_setreuid16	# branch to system call
 
-ENTRY(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
-
 ENTRY(sys_sigsuspend_wrapper)
 	lgfr	%r2,%r2			# int
 	lgfr	%r3,%r3			# int
@@ -325,12 +310,6 @@ ENTRY(sys32_fchmod_wrapper)
 	llgfr	%r3,%r3			# mode_t
 	jg	sys_fchmod		# branch to system call
 
-ENTRY(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
-
 ENTRY(sys32_getpriority_wrapper)
 	lgfr	%r2,%r2			# int
 	lgfr	%r3,%r3			# int
@@ -632,12 +611,6 @@ ENTRY(sys32_pwrite64_wrapper)
 	llgfr	%r6,%r6			# u32
 	jg	sys32_pwrite64		# branch to system call
 
-ENTRY(sys32_chown16_wrapper)
-	llgtr	%r2,%r2			# const char *
-	llgfr	%r3,%r3			# __kernel_old_uid_emu31_t
-	llgfr	%r4,%r4			# __kernel_old_gid_emu31_t
-	jg	sys32_chown16		# branch to system call
-
 ENTRY(sys32_getcwd_wrapper)
 	llgtr	%r2,%r2			# char *
 	llgfr	%r3,%r3			# unsigned long

arch/s390/kernel/syscalls.S

@@ -24,7 +24,7 @@ SYSCALL(sys_chdir,sys_chdir,sys32_chdir_wrapper)
 SYSCALL(sys_time,sys_ni_syscall,sys32_time_wrapper)		/* old time syscall */
 SYSCALL(sys_mknod,sys_mknod,sys32_mknod_wrapper)
 SYSCALL(sys_chmod,sys_chmod,sys32_chmod_wrapper)		/* 15 */
-SYSCALL(sys_lchown16,sys_ni_syscall,sys32_lchown16_wrapper)	/* old lchown16 syscall*/
+SYSCALL(sys_lchown16,sys_ni_syscall,compat_sys_s390_lchown16)	/* old lchown16 syscall*/
 NI_SYSCALL							/* old break syscall holder */
 NI_SYSCALL							/* old stat syscall holder */
 SYSCALL(sys_lseek,sys_lseek,compat_sys_lseek)
@@ -54,7 +54,7 @@ SYSCALL(sys_pipe,sys_pipe,sys32_pipe_wrapper)
 SYSCALL(sys_times,sys_times,compat_sys_times_wrapper)
 NI_SYSCALL							/* old prof syscall */
 SYSCALL(sys_brk,sys_brk,sys32_brk_wrapper)			/* 45 */
-SYSCALL(sys_setgid16,sys_ni_syscall,sys32_setgid16_wrapper)	/* old setgid16 syscall*/
+SYSCALL(sys_setgid16,sys_ni_syscall,compat_sys_s390_setgid16)	/* old setgid16 syscall*/
 SYSCALL(sys_getgid16,sys_ni_syscall,sys32_getgid16)		/* old getgid16 syscall*/
 SYSCALL(sys_signal,sys_signal,sys32_signal_wrapper)
 SYSCALL(sys_geteuid16,sys_ni_syscall,sys32_geteuid16)		/* old geteuid16 syscall */
@@ -79,7 +79,7 @@ SYSCALL(sys_sigaction,sys_sigaction,compat_sys_sigaction)
 NI_SYSCALL							/* old sgetmask syscall*/
 NI_SYSCALL							/* old ssetmask syscall*/
 SYSCALL(sys_setreuid16,sys_ni_syscall,sys32_setreuid16_wrapper)	/* old setreuid16 syscall */
-SYSCALL(sys_setregid16,sys_ni_syscall,sys32_setregid16_wrapper)	/* old setregid16 syscall */
+SYSCALL(sys_setregid16,sys_ni_syscall,compat_sys_s390_setregid16) /* old setregid16 syscall */
 SYSCALL(sys_sigsuspend,sys_sigsuspend,sys_sigsuspend_wrapper)
 SYSCALL(sys_sigpending,sys_sigpending,compat_sys_sigpending_wrapper)
 SYSCALL(sys_sethostname,sys_sethostname,sys32_sethostname_wrapper)
@@ -103,7 +103,7 @@ SYSCALL(sys_munmap,sys_munmap,sys32_munmap_wrapper)
 SYSCALL(sys_truncate,sys_truncate,compat_sys_truncate)
 SYSCALL(sys_ftruncate,sys_ftruncate,compat_sys_ftruncate)
 SYSCALL(sys_fchmod,sys_fchmod,sys32_fchmod_wrapper)
-SYSCALL(sys_fchown16,sys_ni_syscall,sys32_fchown16_wrapper)	/* 95 old fchown16 syscall*/
+SYSCALL(sys_fchown16,sys_ni_syscall,compat_sys_s390_fchown16)	/* 95 old fchown16 syscall*/
 SYSCALL(sys_getpriority,sys_getpriority,sys32_getpriority_wrapper)
 SYSCALL(sys_setpriority,sys_setpriority,sys32_setpriority_wrapper)
 NI_SYSCALL							/* old profil syscall */
@@ -190,7 +190,7 @@ SYSCALL(sys_rt_sigqueueinfo,sys_rt_sigqueueinfo,compat_sys_rt_sigqueueinfo)
 SYSCALL(sys_rt_sigsuspend,sys_rt_sigsuspend,compat_sys_rt_sigsuspend)
 SYSCALL(sys_pread64,sys_pread64,sys32_pread64_wrapper)		/* 180 */
 SYSCALL(sys_pwrite64,sys_pwrite64,sys32_pwrite64_wrapper)
-SYSCALL(sys_chown16,sys_ni_syscall,sys32_chown16_wrapper)	/* old chown16 syscall */
+SYSCALL(sys_chown16,sys_ni_syscall,compat_sys_s390_chown16)	/* old chown16 syscall */
 SYSCALL(sys_getcwd,sys_getcwd,sys32_getcwd_wrapper)
 SYSCALL(sys_capget,sys_capget,sys32_capget_wrapper)
 SYSCALL(sys_capset,sys_capset,sys32_capset_wrapper)		/* 185 */