cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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perf-read-vdso.c (547B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <stdio.h>
      3#include <string.h>
      4
      5#define VDSO__MAP_NAME "[vdso]"
      6
      7/*
      8 * Include definition of find_map() also used in util/vdso.c for
      9 * building perf.
     10 */
     11#include "util/find-map.c"
     12
     13int main(void)
     14{
     15	void *start, *end;
     16	size_t size, written;
     17
     18	if (find_map(&start, &end, VDSO__MAP_NAME))
     19		return 1;
     20
     21	size = end - start;
     22
     23	while (size) {
     24		written = fwrite(start, 1, size, stdout);
     25		if (!written)
     26			return 1;
     27		start += written;
     28		size -= written;
     29	}
     30
     31	if (fflush(stdout))
     32		return 1;
     33
     34	return 0;
     35}