mirror of
https://sourceware.org/git/glibc.git
synced 2024-10-02 12:07:52 +00:00
4194bc660f
1998-04-06 Jakub Jelinek <jj@sunsite.ms.mff.cuni.cz> * elf/dl-runtime.c (fixup, profile_fixup): The final arg to _dl_lookup_*symbol is DL_LOOKUP_NOPLT not ELF_MACHINE_JMP_SLOT. * elf/elf.h (EM_SPARC64): Remove. (EM_SPARC32PLUS, EM_SPARCV9): Add. (HWCAP_SPARC_V9): Add. * elf/ldsodefs.h (_dl_hwcap): Declare. * sysdeps/sparc/sparc32/dl-machine.h (_dl_hwcap, _dl_hwcap_mask): Weaken so dlopen from static progies works. (WEAKADDR): New macro. (elf_machine_matches_host): Accept EM_SPARC32PLUS on a v9 cpu. (LD_SO_PRELOAD): New macro. (elf_machine_fixup_plt): Cope with weak _dl_hwcap. (elf_machine_rela): Weaken _dl_rtld_map. * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Rename __libc_clone to __clone, and remove the later's alias. * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c: Copy to/from the kernel's structure. * sysdeps/generic/libc-start.c: Allow init and fini to be null.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/* POSIX.1 sigaction call for Linux/SPARC.
|
|
Copyright (C) 1997, 1998 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <syscall.h>
|
|
#include <sys/signal.h>
|
|
#include <errno.h>
|
|
#include <kernel_sigaction.h>
|
|
|
|
/* The variable is shared between all wrappers around signal handling
|
|
functions which have RT equivalents. */
|
|
int __libc_missing_rt_sigs;
|
|
|
|
int
|
|
__sigaction (int sig, __const struct sigaction *act, struct sigaction *oact)
|
|
{
|
|
int ret;
|
|
struct kernel_sigaction k_sigact, k_osigact;
|
|
|
|
/* Magic to tell the kernel we are using "new-style" signals, in that
|
|
the signal table is not kept in userspace. Not the same as the
|
|
really-new-style rt signals. */
|
|
sig = -sig;
|
|
|
|
if (act)
|
|
{
|
|
k_sigact.sa_handler = act->sa_handler;
|
|
k_sigact.sa_mask = act->sa_mask.__val[0];
|
|
k_sigact.sa_flags = act->sa_flags;
|
|
}
|
|
|
|
{
|
|
register int r_syscallnr __asm__("%g1") = __NR_sigaction;
|
|
register int r_sig __asm__("%o0") = sig;
|
|
register struct kernel_sigaction *r_act __asm__("%o1");
|
|
register struct kernel_sigaction *r_oact __asm__("%o2");
|
|
|
|
r_act = act ? &k_sigact : NULL;
|
|
r_oact = oact ? &k_osigact : NULL;
|
|
|
|
__asm__ __volatile__("t 0x10\n\t"
|
|
"bcc 1f\n\t"
|
|
" nop\n\t"
|
|
" sub %%g0,%%o0,%%o0\n"
|
|
"1:"
|
|
: "=r"(r_sig)
|
|
: "r"(r_syscallnr), "r"(r_act), "r"(r_oact),
|
|
"0"(r_sig));
|
|
|
|
ret = r_sig;
|
|
}
|
|
|
|
if (ret >= 0)
|
|
{
|
|
if (oact)
|
|
{
|
|
oact->sa_handler = k_osigact.sa_handler;
|
|
oact->sa_mask.__val[0] = k_osigact.sa_mask;
|
|
oact->sa_flags = k_osigact.sa_flags;
|
|
oact->sa_restorer = NULL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
__set_errno (-ret);
|
|
return -1;
|
|
}
|
|
|
|
weak_alias (__sigaction, sigaction);
|