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author | H.J. Lu <hjl.tools@gmail.com> | 2021-12-20 18:33:55 -0800 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2022-01-24 06:37:15 -0800 |
commit | b5237c0746fcf5252fc88291a63782c59167fcb5 (patch) | |
tree | b2a5891f4b054220ffb8c3290ac114012bbd8376 /elf/tst-p_alignmod-base.c | |
parent | 114d07fd9a54684cb67b02174f2c48d19f3e2502 (diff) | |
download | glibc-b5237c0746fcf5252fc88291a63782c59167fcb5.tar.gz glibc-b5237c0746fcf5252fc88291a63782c59167fcb5.tar.xz glibc-b5237c0746fcf5252fc88291a63782c59167fcb5.zip |
elf: Add a test for PT_LOAD segments with mixed p_align [BZ #28676]
Add tst-p_alignmod1-edit to edit the copy of tst-p_alignmod-base.so to reduce p_align of the first PT_LOAD segment by half and verify that the shared library is mapped with the maximum p_align of all PT_LOAD segments. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'elf/tst-p_alignmod-base.c')
-rw-r--r-- | elf/tst-p_alignmod-base.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/elf/tst-p_alignmod-base.c b/elf/tst-p_alignmod-base.c new file mode 100644 index 0000000000..0fc1b75523 --- /dev/null +++ b/elf/tst-p_alignmod-base.c @@ -0,0 +1,41 @@ +/* Check alignment of PT_LOAD segment in a shared library. + Copyright (C) 2022 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, see + <https://www.gnu.org/licenses/>. */ + +#include <stdio.h> +#include <stdbool.h> +#include <stdint.h> +#include <support/check.h> +#include <tst-file-align.h> +#include "tst-p_align.h" + +int foo __attribute__ ((aligned (ALIGN))) = 1; + +bool +__attribute__ ((weak, noclone, noinline)) +is_aligned_p (void *p, int align) +{ + return (((uintptr_t) p) & (align - 1)) == 0; +} + +int +do_load_test (void) +{ + printf ("foo: %p\n", &foo); + TEST_VERIFY (is_aligned_p (&foo, ALIGN)); + return 0; +} |