From dfab448bd8352b372814ca8df0651612296d8e8e Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 18 Jun 1998 21:50:38 +0000 Subject: Update. 1998-06-18 21:45 Ulrich Drepper * signal/signal.h: Add prototype for __sigaltstack. * sysdeps/unix/sysv/linux/syscalls.list: Add __sigaltstack name. Remove sigstack entry. * sysdeps/unix/sysv/linux/alpha/syscalls.list: Add sigstack here. * sysdeps/unix/sysv/linux/sigstack.c: New file. * sysdeps/i386/backtrace.c: Add casts. --- sysdeps/unix/sysv/linux/alpha/syscalls.list | 1 + sysdeps/unix/sysv/linux/sigstack.c | 61 +++++++++++++++++++++++++++++ sysdeps/unix/sysv/linux/syscalls.list | 3 +- 3 files changed, 63 insertions(+), 2 deletions(-) create mode 100644 sysdeps/unix/sysv/linux/sigstack.c (limited to 'sysdeps/unix/sysv') diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list index 0b38038d46..ff73a6dc9f 100644 --- a/sysdeps/unix/sysv/linux/alpha/syscalls.list +++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list @@ -16,6 +16,7 @@ semget - semget 3 __semget semget semctl - semctl 4 __semctl semctl osf_sigprocmask - osf_sigprocmask 2 __osf_sigprocmask +sigstack - sigstack 2 sigstack getpeername - getpeername 3 __getpeername getpeername getpriority - getpriority 2 __getpriority getpriority diff --git a/sysdeps/unix/sysv/linux/sigstack.c b/sysdeps/unix/sysv/linux/sigstack.c new file mode 100644 index 0000000000..bca7dc634e --- /dev/null +++ b/sysdeps/unix/sysv/linux/sigstack.c @@ -0,0 +1,61 @@ +/* Emulate sigstack function using sigalstack. + Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 1998. + + 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 + + +int +sigstack (ss, oss) + const struct sigstack *ss; + struct sigstack *oss; +{ + stack_t sas; + stack_t *sasp = NULL; + stack_t osas; + stack_t *osasp = oss == NULL ? NULL : &osas; + int result; + + if (ss != NULL) + { + /* We have to convert the information. */ + sas.ss_sp = ss->ss_sp; + sas.ss_flags = ss->ss_onstack ? SS_ONSTACK : 0; + + /* For the size of the stack we have no value we can pass to the + kernel. This is why this function should not be used. We simply + assume that all the memory down to address zero (in case the stack + grows down) is available. */ + sas.ss_size = ss->ss_sp - NULL; + + sasp = &sas; + } + + /* Call the kernel. */ + result = __sigaltstack (sasp, osasp); + + /* Convert the result, if wanted and possible. */ + if (result == 0 && oss != NULL) + { + oss->ss_sp = osas.ss_sp; + oss->ss_onstack = (osas.ss_flags & SS_ONSTACK) != 0; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index 739e29c536..e80fd84568 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -72,8 +72,7 @@ setfsuid EXTRA setfsuid 1 setfsuid setpgid - setpgid 2 __setpgid setpgid setresgid EXTRA setresgid 3 setresgid setresuid EXTRA setresuid 3 setresuid -sigaltstack - sigaltstack 2 sigaltstack -sigstack - sigstack 2 sigstack +sigaltstack - sigaltstack 2 __sigaltstack sigaltstack sys_fstat fxstat fstat 2 __syscall_fstat sys_lstat lxstat lstat 2 __syscall_lstat sys_mknod xmknod mknod 3 __syscall_mknod -- cgit 1.4.1