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/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
#include "tt.h"
#include "mem_user.h"
#include "user_util.h"
void remap_data(void *segment_start, void *segment_end, int w)
{
void *addr;
unsigned long size;
int data, prot;
if(w) prot = PROT_WRITE;
else prot = 0;
prot |= PROT_READ | PROT_EXEC;
size = (unsigned long) segment_end -
(unsigned long) segment_start;
data = create_mem_file(size);
addr = mmap(NULL, size, PROT_WRITE | PROT_READ, MAP_SHARED, data, 0);
if(addr == MAP_FAILED){
perror("mapping new data segment");
exit(1);
}
memcpy(addr, segment_start, size);
if(switcheroo(data, prot, addr, segment_start, size) < 0){
printf("switcheroo failed\n");
exit(1);
}
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
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