ex_clone.c revision 8f943afc22a6a683b78271836c8ddc462b4824a9 
1#include <features.h>
2#include <signal.h>
3#include <sys/types.h>
4#include <pthread.h>
5#include <stdio.h>
6#include <stdlib.h>
7#include <string.h>
8#include <unistd.h>
9
10char source[40] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\0";
11char target[40] = "                                       \0";
12
13pthread_t thread;
14
15void *threadfunc(void *arg)
16{
17	char buf2[40];
18	int i;
19
20	memset(buf2, 0, sizeof(buf2));
21	for (i=0; i<5000; i++)
22		asm volatile(
23			"lghi 2,0\n"
24			"lghi 3,0\n"
25			"lgr 4,%0\n"
26			"lgr 5,%1\n"
27			"larl 1,1f\n"
28			"0: ex 0,0(1)\n"
29			"j 2f\n"
30			"1: mvc 0(30,4),0(5)\n"
31			"2:\n"
32		::"a" (buf2), "a" (source)
33		: "1", "2", "3", "4", "5", "memory");
34	printf("%s\n", buf2);
35	pthread_exit(0);
36}
37
38int main()
39{
40	int i;
41
42	pthread_create(&thread, NULL, threadfunc, NULL);
43
44	for (i=0; i<5000; i++)
45		asm volatile(
46			"lghi 4,0\n"
47			"lghi 5,0\n"
48			"lgr 2,%0\n"
49			"lgr 3,%1\n"
50			"larl 1,1f\n"
51			"0: ex 0,0(1)\n"
52			"j 2f\n"
53			"1: mvc 0(20,2),0(3)\n"
54			"2:\n"
55		::"a" (target), "a" (source)
56		: "1", "2", "3", "4", "5", "memory");
57	pthread_join(thread, NULL);
58	printf("%s\n", target);
59	pthread_exit(0);
60}
61