/* * Copyright 2015, Cyril Bur, IBM Corp. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * This test attempts to see if the VMX registers change across a syscall (fork). */ #include <altivec.h> #include <stdio.h> #include <unistd.h> #include <sys/syscall.h> #include <sys/time.h> #include <stdlib.h> #include <sys/types.h> #include <sys/wait.h> #include "utils.h" vector int varray[] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10,11,12}, {13,14,15,16},{17,18,19,20},{21,22,23,24}, {25,26,27,28},{29,30,31,32},{33,34,35,36}, {37,38,39,40},{41,42,43,44},{45,46,47,48}}; extern int test_vmx(vector int *varray, pid_t *pid); int vmx_syscall(void) { pid_t fork_pid; int i; int ret; int child_ret; for (i = 0; i < 1000; i++) { /* test_vmx will fork() */ ret = test_vmx(varray, &fork_pid); if (fork_pid == -1) return -1; if (fork_pid == 0) exit(ret); waitpid(fork_pid, &child_ret, 0); if (ret || child_ret) return 1; } return 0; } int test_vmx_syscall(void) { /* * Setup an environment with much context switching */ pid_t pid2; pid_t pid = fork(); int ret; int child_ret; FAIL_IF(pid == -1); pid2 = fork(); ret = vmx_syscall(); /* Can't FAIL_IF(pid2 == -1); because we've already forked */ if (pid2 == -1) { /* * Couldn't fork, ensure child_ret is set and is a fail */ ret = child_ret = 1; } else { if (pid2) waitpid(pid2, &child_ret, 0); else exit(ret); } ret |= child_ret; if (pid) waitpid(pid, &child_ret, 0); else exit(ret); FAIL_IF(ret || child_ret); return 0; } int main(int argc, char *argv[]) { return test_harness(test_vmx_syscall, "vmx_syscall"); } linux/net-next.git/commit/net/batman-adv/bat_v_elp.h?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/batman-adv/bat_v_elp.h?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/batman-adv/bat_v_elp.h'> <input type='hidden' name='id' value='a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'/><select name='qt'> <option value='grep'>log msg</option> <option value='author'>author</option> <option value='committer'>committer</option> <option value='range'>range</option> </select> <input class='txt' type='search' size='10' name='q' value=''/> <input type='submit' value='search'/> </form> </td></tr></table> <div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/batman-adv?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>batman-adv</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/batman-adv/bat_v_elp.h?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c'>bat_v_elp.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/batman-adv/bat_v_elp.h?id=a3c11a7ac6cdd670324df39244ed1d2321bb0c9c&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>