tests/vmmcp.c

#include <stdio.h> 
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <arch/arch.h>
#include <unistd.h>
#include <errno.h>
#include <dirent.h>
#include <stdlib.h>
#include <string.h>
#include <ros/syscall.h>

unsigned long stack[1024];

static void fail(void)
{
	__asm__ __volatile__("mov $0xdeadbeef, %rbx; mov 5, %rax\n");
}

unsigned long long *p512, *p1, *p2m;

int main(int argc, char **argv)
{
	int fd = open("#c/sysctl", O_RDWR), ret;
	static char cmd[512];
	if (fd < 0) {
		perror("#c/sysctl");
		exit(1);
	}
	ret = syscall(33, 1);
	if (ret < 0) {
		perror("vm setup");
		exit(1);
	}
	ret = posix_memalign((void **)&p512, 4096, 3*4096);
	if (ret) {
		perror("ptp alloc");
		exit(1);
	}
	p1 = &p512[512];
	p2m = &p512[1024];
	p512[0] = (unsigned long long)p1 | 7;
	p1[0] = /*0x87; */(unsigned long long)p2m | 7;
	p2m[0] = 0x87;
	p2m[1] = 0x200000 | 0x87;
	p2m[2] = 0x400000 | 0x87;
	p2m[3] = 0x600000 | 0x87;

	printf("p512 %p p512[0] is 0x%lx p1 %p p1[0] is 0x%x\n", p512, p512[0], p1, p1[0]);
	sprintf(cmd, "V 0x%x 0x%x 0x%x", (unsigned long long)fail, (unsigned long long) stack, (unsigned long long) p512);
	printf("Writing command :%s:\n", cmd);
	ret = write(fd, cmd, strlen(cmd));
	if (ret != strlen(cmd)) {
		perror(cmd);
	}
	
	return 0;
}