Implement clone() C library function properly.
Only provide an implementation for ARM at the moment, since
it requires specific assembly fragments (the standard syscall
stubs cannot be used because the child returns in a different
stack).
diff --git a/libc/include/sched.h b/libc/include/sched.h
index 6600bae..33b9ad6 100644
--- a/libc/include/sched.h
+++ b/libc/include/sched.h
@@ -69,8 +69,9 @@
#define CLONE_CHILD_SETTID 0x01000000
#define CLONE_STOPPED 0x02000000
-extern int clone(int (*fn)(void*), void *child_stack, int flags, void *arg);
-extern pid_t __clone(int, void *);
+#ifdef __GNU_SOURCE
+extern int clone(int (*fn)(void *), void *child_stack, int flags, void* arg, ...);
+#endif
__END_DECLS
diff --git a/libc/include/sys/linux-unistd.h b/libc/include/sys/linux-unistd.h
index 12f7704..9a151d2 100644
--- a/libc/include/sys/linux-unistd.h
+++ b/libc/include/sys/linux-unistd.h
@@ -10,7 +10,7 @@
pid_t __fork (void);
pid_t _waitpid (pid_t, int*, int, struct rusage*);
int waitid (int, pid_t, struct siginfo_t*, int,void*);
-pid_t __clone (int (*fn)(void*), void *child_stack, int flags, void *arg);
+pid_t __sys_clone (int, void*, int*, void*, int*);
int execve (const char*, char* const*, char* const*);
int setuid (uid_t);
uid_t getuid (void);