| /* 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" |