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 13 int 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 } 36