/* Copyright (C) 2008 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <errno.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <ucontext.h> #include <tst-stack-align.h> ucontext_t ucp, ucp2; char st1[262144] __attribute__((aligned (16))); void cf (int i, int j) { if (i != 78 || j != 274) { printf ("i %d j %d\n", i, j); exit (1); } else if (TEST_STACK_ALIGN ()) { puts ("insufficiently aligned stack"); exit (2); } } int do_test (void) { for (size_t j = 32; j < 64; j += sizeof (long)) { if (getcontext (&ucp) != 0) { if (errno == ENOSYS) { puts ("context handling not supported"); return 0; } puts ("getcontext failed"); return 1; } ucp.uc_link = &ucp2; ucp.uc_stack.ss_sp = st1; ucp.uc_stack.ss_size = sizeof (st1) - j; memset (&st1[sizeof (st1) - j], 0x55, j); makecontext (&ucp, (void (*) (void)) cf, 2, 78, 274); if (swapcontext (&ucp2, &ucp) != 0) { puts ("setcontext failed"); return 1; } for (size_t i = j; i > 0; i--) if (st1[sizeof (st1) - j + i - 1] != 0x55) { printf ("fail %zd %zd\n", i, j); break; } } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"