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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-04-07 17:15:56 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-05-13 10:54:41 -0300 |
| commit | 6fad891dfd5236002a2e64e26279c1d6dfa79565 (patch) | |
| tree | 6258506ca4e1fd0d9e88a2a0c551984d5e644acd /sysdeps/unix/sysv/linux/siglist-compat.h | |
| parent | 900fa2573671d692ed245f76aa3f05cec462be0c (diff) | |
| download | glibc-6fad891dfd5236002a2e64e26279c1d6dfa79565.tar glibc-6fad891dfd5236002a2e64e26279c1d6dfa79565.tar.gz glibc-6fad891dfd5236002a2e64e26279c1d6dfa79565.tar.bz2 glibc-6fad891dfd5236002a2e64e26279c1d6dfa79565.zip | |
stdio: Remove the usage of $(fno-unit-at-a-time) for siglist.c
The siglist.c is built with -fno-toplevel-reorder to avoid compiler
to reorder the compat assembly directives due an assembler
issue [1] (fixed on 2.39).
This patch removes the compiler flags by split the compat symbol
generation in two phases. First the __sys_siglist and __sys_sigabbrev
without any compat symbol directive is preprocessed to generate an
assembly source code. This generate assembly is then used as input
on a platform agnostic siglist.S which then creates the compat
definitions. This prevents compiler to move any compat directive
prior the _sys_errlist definition itself.
Checked on a make check run-built-tests=no on all affected ABIs.
Reviewed-by: Fangrui Song <maskray@google.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/siglist-compat.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/siglist-compat.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/siglist-compat.h b/sysdeps/unix/sysv/linux/siglist-compat.h new file mode 100644 index 0000000000..2a9801276d --- /dev/null +++ b/sysdeps/unix/sysv/linux/siglist-compat.h @@ -0,0 +1,34 @@ +/* Compatibility signal numbers and their names symbols. Linux version. + Copyright (C) 1997-2022 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 <siglist-compat-def.h> +/* To get _NSIG definition. */ +#define _SIGNAL_H +#include <bits/signum-generic.h> + +#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) +DEFINE_COMPAT_SIGLIST (32, GLIBC_2_0) +#endif + +#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3) +DEFINE_COMPAT_SIGLIST (64, GLIBC_2_1) +#endif + +#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_32) +DEFINE_COMPAT_SIGLIST (_NSIG, GLIBC_2_3_3) +#endif |