mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 23:00:22 +00:00
45 lines
1.8 KiB
ArmAsm
45 lines
1.8 KiB
ArmAsm
/* Copyright (C) 1994, 1995 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 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., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <limits.h>
|
|
|
|
/* Dynix erroneously reports `getgroups (0, 0)' as an error.
|
|
We fix up for that case. */
|
|
|
|
#define syscall_error myerror
|
|
SYSCALL__ (getgroups, 2)
|
|
#undef syscall_error
|
|
ret
|
|
myerror:
|
|
tstl 4(%esp) /* Was the first arg 0? */
|
|
jnz syscall_error /* If not, go to the normal error case. */
|
|
/* When called with (0, 0), we want to return the number of groups
|
|
without storing anything. The Dynix system call gives an error
|
|
for this case, so we fix up by calling it with a local array we
|
|
never use, and just use the return value. */
|
|
subl %esp, $(NGROUPS_MAX * 4) /* Allocate a local array. */
|
|
movl $NGROUPS_MAX, %ecx /* Pass NGROUPS_MAX for first arg. */
|
|
movl %esp, %edx /* Pass local array for second arg. */
|
|
DO_CALL (getgroups, 2) /* Do the system call. */
|
|
addl %esp, $(NGROUPS_MAX * 4) /* Pop the local array. */
|
|
jb syscall_error /* Check for error from the system call. */
|
|
ret /* Return its value. */
|
|
|
|
weak_alias (__getgroups, getgroups)
|