From: Enrico Scholz Date: Wed, 4 Feb 2004 21:26:51 +0000 (+0000) Subject: initial checkin X-Git-Tag: VERSION_0_10~749 X-Git-Url: http://git.linux-vserver.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ec079f34facc3ac11a4956cf3f97ecfc6752a0b;p=util-vserver.git initial checkin git-svn-id: http://svn.linux-vserver.org/svn/util-vserver/trunk@796 94cd875c-1c1d-0410-91d2-eb244daf1a30 --- diff --git a/util-vserver/m4/ensc_syscall.m4 b/util-vserver/m4/ensc_syscall.m4 new file mode 100644 index 0000000..8d2feed --- /dev/null +++ b/util-vserver/m4/ensc_syscall.m4 @@ -0,0 +1,62 @@ +dnl $Id$ + +dnl Copyright (C) 2004 Enrico Scholz +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; version 2 of the License. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +dnl Usage: ENSC_SYSCALL + +AC_DEFUN([ENSC_SYSCALL], +[ + AC_MSG_CHECKING([for syscall(2) invocation method]) + AC_ARG_WITH([syscall], + [AC_HELP_STRING([--with-syscall=METHOD], + [call syscall(2) with the specified METHOD; valid values are 'fast', 'traditional' and 'auto' (default: auto)])], + [], + [with_syscall=auto]) + AC_MSG_RESULT([$with_syscall]) + + case x"$with_syscall" in + xauto) + AC_CACHE_CHECK([which syscall(2) invocation works], [ensc_cv_test_syscall], + [AC_COMPILE_IFELSE([ +#include +#include +#include +#define __NR_foo 300 +inline static _syscall4(int, foo, int, a, int, b, int, c, int, d) + +int main() { + return foo(1,2,3,4); +} + ], + [ensc_cv_test_syscall=fast],[ensc_cv_test_syscall=traditional])]) + with_syscall=$ensc_cv_test_syscall + ;; + xfast|xtraditional) + ;; + *) + AC_MSG_ERROR(['$with_syscall' is not a valid value for '--with-syscall']) + ;; + esac + + if test x"$with_syscall" = xtraditional; then + AC_DEFINE(ENSC_SYSCALL_TRADITIONAL, 1, [Define to 1 when the fast syscall(2) invocation does not work]) + fi + + AH_BOTTOM([ +#if defined(__pic__) && defined(__i386) && !defined(ENSC_SYSCALL_TRADITIONAL) +# define ENSC_SYSCALL_TRADITIONAL 1 +#endif]) +])