diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sparc/clone.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sparc/clone.S | 63 |
1 files changed, 23 insertions, 40 deletions
diff --git a/sysdeps/unix/sysv/linux/sparc/clone.S b/sysdeps/unix/sysv/linux/sparc/clone.S index 875dcba64a..9e1ba812b0 100644 --- a/sysdeps/unix/sysv/linux/sparc/clone.S +++ b/sysdeps/unix/sysv/linux/sparc/clone.S @@ -1,34 +1,29 @@ -/* Copyright (C) 1996 Free Software Foundation, Inc. +/* Copyright (C) 1996, 1997 Free Software Foundation, Inc. Contributed by Miguel de Icaza (miguel@nuclecu.unam.mx) + Based on code written for the Intel by Richard Henderson (rth@tamu.edu). - FIXME: Currently only 6 parameters can be passsed - to the clone function. - - based on code written for the Intel by Richard - Henderson (rth@tamu.edu) - -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 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. + 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. */ + 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. */ /* clone() is even more special than fork() as it mucks with stacks and invokes a function in the right context after its all over. */ - + #include <asm/errno.h> #include <asm/unistd.h> -/* int clone(int (*fn)(), void *child_stack, int flags, int nargs, ...) */ +/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ .text .align 4 @@ -37,31 +32,20 @@ Cambridge, MA 02139, USA. */ .weak clone __clone = __libc_clone clone = __libc_clone -__libc_clone: + +__libc_clone: save %sp,-96,%sp + /* sanity check arguments */ tst %i0 be __clone_syscall_error tst %i1 be __clone_syscall_error - cmp %i3,0 - bl __clone_syscall_error - nop - - /* Flush the register windows */ - ta 3 + nop - /* Parameters for system call */ + /* Do the system call */ mov %i1,%o1 mov %i2,%o0 - - /* parameters that are on the stack for routine */ -#define P(x) 0x5c+(x*4) - ld [%fp+P(0)],%o2 - ld [%fp+P(1)],%o3 - ld [%fp+P(2)],%o4 - ld [%fp+P(3)],%o5 - /* Do the system call */ set __NR_clone,%g1 ta 0x10 bcs __clone_syscall_error @@ -71,7 +55,7 @@ __libc_clone: mov %o0,%i0 ret restore - + __clone_syscall_error: call __errno_location set EINVAL,%i0 @@ -81,8 +65,7 @@ __clone_syscall_error: restore __thread_start: - mov %i5,%o1 call %i0 - mov %i4,%o0 + mov %i3,%o0 call _exit,0 nop |