mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 10:21:05 +00:00
56b98bf1fb
Alpha rt_sigaction syscall uses a slight different kernel ABI than generic one: arch/alpha/kernel/signal.c 90 SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act, 91 struct sigaction __user *, oact, 92 size_t, sigsetsize, void __user *, restorer) Similar as sparc, the syscall expects a restorer function. However different than sparc, alpha defines the restorer as the 5th argument (sparc defines as the 4th). This patch removes the arch-specific alpha sigaction implementation, adapt the Linux generic one to different restore placements (through STUB macro), and make alpha use the Linux generic kernel_sigaction definition. Checked on alpha-linux-gnu and x86_64-linux-gnu (for sanity). * sysdeps/unix/sysv/linux/alpha/Makefile: Update comment about __syscall_rt_sigaction. * sysdeps/unix/sysv/linux/alpha/kernel_sigaction.h (kernel_sigaction): Use Linux generic defintion. (STUB): Define. (__syscall_rt_sigreturn, __syscall_sigreturn): Add prototype. * sysdeps/unix/sysv/linux/alpha/rt_sigaction.S (__syscall_rt_sigaction): Remove implementation. (__syscall_sigreturn, __syscall_rt_sigreturn): Define as global and hidden. * sysdeps/unix/sysv/linux/alpha/sigaction.c: Remove file. * sysdeps/unix/sysv/linux/alpha/sysdep.h (INLINE_SYSCALL, INTERNAL_SYSCALL): Remove definitions. * sysdeps/unix/sysv/linux/sigaction.c: Define STUB to accept both the action and signal set size. * sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c (STUB): Redefine. * sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c (STUB): Likewise.
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/* POSIX.1 sigaction call for Linux/SPARC.
|
|
Copyright (C) 1997-2018 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Miguel de Icaza <miguel@nuclecu.unam.mx>, 1997.
|
|
|
|
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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <string.h>
|
|
#include <syscall.h>
|
|
#include <sys/signal.h>
|
|
#include <errno.h>
|
|
#include <kernel_sigaction.h>
|
|
#include <sysdep.h>
|
|
|
|
static void __rt_sigreturn_stub (void);
|
|
static void __sigreturn_stub (void);
|
|
|
|
#define STUB(act, sigsetsize) \
|
|
(act) ? ((unsigned long)((act->sa_flags & SA_SIGINFO) \
|
|
? &__rt_sigreturn_stub \
|
|
: &__sigreturn_stub) - 8) \
|
|
: 0, \
|
|
(sigsetsize)
|
|
|
|
#include <sysdeps/unix/sysv/linux/sigaction.c>
|
|
|
|
static
|
|
inhibit_stack_protector
|
|
void
|
|
__rt_sigreturn_stub (void)
|
|
{
|
|
__asm__ ("mov %0, %%g1\n\t"
|
|
"ta 0x10\n\t"
|
|
: /* no outputs */
|
|
: "i" (__NR_rt_sigreturn));
|
|
}
|
|
|
|
static
|
|
inhibit_stack_protector
|
|
void
|
|
__sigreturn_stub (void)
|
|
{
|
|
__asm__ ("mov %0, %%g1\n\t"
|
|
"ta 0x10\n\t"
|
|
: /* no outputs */
|
|
: "i" (__NR_sigreturn));
|
|
}
|