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signal: Add signum-{generic,arch}.h

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It refactor how signals are defined by each architecture.  Instead of
include a generic header (bits/signum-generic.h) and undef non-default
values in an arch specific header (bits/signum.h) the new scheme uses a
common definition (bits/signum-generic.h) and each architectures add
its specific definitions on a new header (bits/signum-arch.h).

For Linux it requires copy some system default definitions to alpha,
hppa, and sparc.  They are historical values and newer ports uses
the generic Linux signum-arch.h.

For Hurd the BSD signum is removed and moved to a new header (it is
used currently only on Hurd).

Checked on a build against all affected ABIs.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella
2020-04-22 11:02:11 -03:00
parent 6caddd34bd
commit e4e11b1dba
18 changed files with 461 additions and 374 deletions
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35
sysdeps/unix/bsd/bits/signum.h
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@ -1,35 +0,0 @@
/* Signal number definitions. BSD version.
Copyright (C) 1991-2020 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/>. */
#ifndef _BITS_SIGNUM_H
#define _BITS_SIGNUM_H 1
#ifndef _SIGNAL_H
#error "Never include <bits/signum.h> directly; use <signal.h> instead."
#endif
#include <bits/signum-generic.h>
/* Adjustments and additions to the signal number constants for
4.2 or 4.3 BSD-derived Unix systems. */
#define SIGEMT 7 /* Emulator trap (4.2 BSD). */
#define SIGINFO 29 /* Information request (4.4 BSD). */
#define SIGLOST 32 /* Resource lost (Sun); server died (GNU). */
#endif /* bits/signum.h. */