[S390] System call cleanup.
Remove system call glue for sys_clone, sys_fork, sys_vfork, sys_execve,
sys_sigreturn, sys_rt_sigreturn and sys_sigaltstack. Call do_execve from
kernel_execve directly, move pt_regs to the right place and branch to
sysc_return to start the user space program. This removes the last
in-kernel system call.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index c774f10..cd8d321 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -10,7 +10,7 @@
NI_SYSCALL /* 0 */
SYSCALL(sys_exit,sys_exit,sys32_exit_wrapper)
-SYSCALL(sys_fork_glue,sys_fork_glue,sys_fork_glue)
+SYSCALL(sys_fork,sys_fork,sys_fork)
SYSCALL(sys_read,sys_read,sys32_read_wrapper)
SYSCALL(sys_write,sys_write,sys32_write_wrapper)
SYSCALL(sys_open,sys_open,sys32_open_wrapper) /* 5 */
@@ -19,7 +19,7 @@
SYSCALL(sys_creat,sys_creat,sys32_creat_wrapper)
SYSCALL(sys_link,sys_link,sys32_link_wrapper)
SYSCALL(sys_unlink,sys_unlink,sys32_unlink_wrapper) /* 10 */
-SYSCALL(sys_execve_glue,sys_execve_glue,sys32_execve_glue)
+SYSCALL(sys_execve,sys_execve,sys32_execve)
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)
@@ -127,8 +127,8 @@
SYSCALL(sys_sysinfo,sys_sysinfo,compat_sys_sysinfo_wrapper)
SYSCALL(sys_ipc,sys_ipc,sys32_ipc_wrapper)
SYSCALL(sys_fsync,sys_fsync,sys32_fsync_wrapper)
-SYSCALL(sys_sigreturn_glue,sys_sigreturn_glue,sys32_sigreturn_glue)
-SYSCALL(sys_clone_glue,sys_clone_glue,sys32_clone_glue) /* 120 */
+SYSCALL(sys_sigreturn,sys_sigreturn,sys32_sigreturn)
+SYSCALL(sys_clone,sys_clone,sys32_clone) /* 120 */
SYSCALL(sys_setdomainname,sys_setdomainname,sys32_setdomainname_wrapper)
SYSCALL(sys_newuname,s390x_newuname,sys32_newuname_wrapper)
NI_SYSCALL /* modify_ldt for i386 */
@@ -181,7 +181,7 @@
SYSCALL(sys_setresgid16,sys_ni_syscall,sys32_setresgid16_wrapper) /* 170 old setresgid16 syscall */
SYSCALL(sys_getresgid16,sys_ni_syscall,sys32_getresgid16_wrapper) /* old getresgid16 syscall */
SYSCALL(sys_prctl,sys_prctl,sys32_prctl_wrapper)
-SYSCALL(sys_rt_sigreturn_glue,sys_rt_sigreturn_glue,sys32_rt_sigreturn_glue)
+SYSCALL(sys_rt_sigreturn,sys_rt_sigreturn,sys32_rt_sigreturn)
SYSCALL(sys_rt_sigaction,sys_rt_sigaction,sys32_rt_sigaction_wrapper)
SYSCALL(sys_rt_sigprocmask,sys_rt_sigprocmask,sys32_rt_sigprocmask_wrapper) /* 175 */
SYSCALL(sys_rt_sigpending,sys_rt_sigpending,sys32_rt_sigpending_wrapper)
@@ -194,11 +194,11 @@
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 */
-SYSCALL(sys_sigaltstack_glue,sys_sigaltstack_glue,sys32_sigaltstack_glue)
+SYSCALL(sys_sigaltstack,sys_sigaltstack,sys32_sigaltstack)
SYSCALL(sys_sendfile,sys_sendfile64,sys32_sendfile_wrapper)
NI_SYSCALL /* streams1 */
NI_SYSCALL /* streams2 */
-SYSCALL(sys_vfork_glue,sys_vfork_glue,sys_vfork_glue) /* 190 */
+SYSCALL(sys_vfork,sys_vfork,sys_vfork) /* 190 */
SYSCALL(sys_getrlimit,sys_getrlimit,compat_sys_getrlimit_wrapper)
SYSCALL(sys_mmap2,sys_mmap2,sys32_mmap2_wrapper)
SYSCALL(sys_truncate64,sys_ni_syscall,sys32_truncate64_wrapper)