user: implement mlibc as the libc, finally.

It's finally done..

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

user/include/mlibc/sysdeps/keyronex/generic/linux.cpp

@@ -0,0 +1,41 @@
+#include <sys/types.h>
+
+#include <keyronex/syscall.h>
+#include <mlibc/ansi-sysdeps.hpp>
+#include <mlibc/debug.hpp>
+#include <mlibc/posix-sysdeps.hpp>
+#include <mlibc/linux-sysdeps.hpp>
+
+namespace mlibc {
+
+int
+sys_epoll_pwait(int epfd, struct epoll_event *ev, int n, int timeout,
+    const sigset_t *sigmask, int *raised)
+{
+	uintptr_t ret = syscall5(kPXSysEPollWait, epfd, (uintptr_t)ev, n,
+	    timeout, (uintptr_t)sigmask, NULL);
+	if (int e = sc_error(ret); e)
+		return e;
+	*raised = ret;
+	return 0;
+}
+
+int
+sys_epoll_create(int flags, int *fd)
+{
+	uintptr_t ret = syscall1(kPXSysEPollCreate, flags, NULL);
+	if (int e = sc_error(ret); e)
+		return e;
+	*fd = ret;
+	return 0;
+}
+
+int
+sys_epoll_ctl(int epfd, int mode, int fd, struct epoll_event *ev)
+{
+	uintptr_t ret = syscall4(kPXSysEPollCtl, epfd, mode, fd, (uintptr_t)ev,
+	    NULL);
+	return sc_error(ret);
+}
+
+}