test: Add static sleep test

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

test/Makefile

 OBJS	+= testee.o
 OBJS	+= testee-static.o
+OBJS	+= testee-static-syssleep.o
 OBJS	+= testee-threads.o
 OBJS	+= testee-unlinked.o
 OBJS	+= asmem.o
@@ -20,6 +21,12 @@ testee: testee.c
 	$(E) "  LINK    " $@
 	$(Q) $(CC) -o $@ $(patsubst %.c,%.o,$<)
 
+testee-static-syssleep: testee-static-syssleep.c
+	$(E) "  CC      " $(patsubst %.c,%.o,$<)
+	$(Q) $(CC) -c $(CFLAGS) $< -o $(patsubst %.c,%.o,$<)
+	$(E) "  LINK    " $@
+	$(Q) $(CC) -static -o $@ $(patsubst %.c,%.o,$<)
+
 testee-static: testee-static.c
 	$(E) "  CC      " $(patsubst %.c,%.o,$<)
 	$(Q) $(CC) -c $(CFLAGS) $< -o $(patsubst %.c,%.o,$<)

test/testee-static-syssleep.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+
+#include <sys/wait.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+
+#include <sched.h>
+
+#ifndef always_inline
+# define always_inline		__always_inline
+#endif
+
+#define __NR_nanosleep 35
+
+static always_inline long syscall2(int nr, unsigned long arg0, unsigned long arg1)
+{
+	long ret;
+	asm volatile("syscall"
+		     : "=a" (ret)
+		     : "a" (nr), "D" (arg0), "S" (arg1)
+		     : "memory");
+	return ret;
+}
+
+static always_inline long sys_nanosleep(struct timespec *req, struct timespec *rem)
+{
+	return syscall2(__NR_nanosleep, (unsigned long)req, (unsigned long)rem);
+}
+
+static void always_inline local_sleep(long seconds)
+{
+	struct timespec req, rem;
+
+	req = (struct timespec){
+		.tv_sec		= seconds,
+		.tv_nsec	= 0,
+	};
+
+	sys_nanosleep(&req, &rem);
+}
+
+
+int main(int argc, char *argv[])
+{
+	for (;;)
+		local_sleep(5);
+
+	return 0;
+}