diff options
Diffstat (limited to 'stdlib')
| -rw-r--r-- | stdlib/Makefile | 6 | ||||
| -rw-r--r-- | stdlib/tst-makecontext2.c | 80 |
2 files changed, 84 insertions, 2 deletions
diff --git a/stdlib/Makefile b/stdlib/Makefile index e72ab5b..736c562 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -1,4 +1,4 @@ -# Copyright (C) 1991-2006, 2007 Free Software Foundation, Inc. +# Copyright (C) 1991-2006, 2007, 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 @@ -68,7 +68,8 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ tst-limits tst-rand48 bug-strtod tst-setcontext \ test-a64l tst-qsort tst-system testmb2 bug-strtod2 \ tst-atof1 tst-atof2 tst-strtod2 tst-strtod3 tst-rand48-2 \ - tst-makecontext tst-strtod4 tst-strtod5 tst-qsort2 + tst-makecontext tst-strtod4 tst-strtod5 tst-qsort2 \ + tst-makecontext2 include ../Makeconfig @@ -106,6 +107,7 @@ endif CFLAGS-tst-bsearch.c = $(stack-align-test-flags) CFLAGS-tst-qsort.c = $(stack-align-test-flags) +CFLAGS-tst-makecontext2.c = $(stack-align-test-flags) include ../Rules diff --git a/stdlib/tst-makecontext2.c b/stdlib/tst-makecontext2.c new file mode 100644 index 0000000..903ccf6 --- /dev/null +++ b/stdlib/tst-makecontext2.c @@ -0,0 +1,80 @@ +/* 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" |