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-rw-r--r--sysdeps/unix/sysv/linux/powerpc/clone.S94
1 files changed, 0 insertions, 94 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/clone.S b/sysdeps/unix/sysv/linux/powerpc/clone.S
deleted file mode 100644
index 97849a5b26..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/clone.S
+++ /dev/null
@@ -1,94 +0,0 @@
-/* Wrapper around clone system call.
- Copyright (C) 1997,98,99,2000,02 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 Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <sysdep.h>
-#define _ERRNO_H 1
-#include <bits/errno.h>
-#include <bp-sym.h>
-#include <bp-asm.h>
-
-/* This is the only really unusual system call in PPC linux, but not
- because of any weirdness in the system call itself; because of
- all the freaky stuff we have to do to make the call useful. */
-
-/* int [r3] clone(int (*fn)(void *arg) [r3], void *child_stack [r4],
- int flags [r5], void *arg [r6]); */
-
-ENTRY (BP_SYM (__clone))
- /* GKM FIXME: add bounds checks, where sensible. */
- DISCARD_BOUNDS (r4)
- DISCARD_BOUNDS (r6)
-
- /* Check for child_stack == NULL || fn == NULL. */
- cmpwi cr0,r4,0
- cmpwi cr1,r3,0
- cror cr0*4+eq,cr1*4+eq,cr0*4+eq
- beq- cr0,L(badargs)
-
- /* Set up stack frame for parent. */
- stwu r1,-32(r1)
- stmw r29,16(r1)
-
- /* Set up stack frame for child. */
- clrrwi r4,r4,4
- li r0,0
- stwu r0,-16(r4)
-
- /* Save fn, args, stack across syscall. */
- mr r29,r3 /* Function in r29. */
- mr r30,r4 /* Stack pointer in r30. */
- mr r31,r6 /* Argument in r31. */
-
- /* 'flags' argument is first parameter to clone syscall. (The other
- argument is the stack pointer, already in r4.) */
- mr r3,r5
-
- /* Do the call. */
- DO_CALL(SYS_ify(clone))
-
- /* Check for child process. */
- cmpwi cr1,r3,0
- crandc cr1*4+eq,cr1*4+eq,cr0*4+so
- bne- cr1,L(parent) /* The '-' is to minimise the race. */
-
- /* On at least mklinux DR3a5, clone() doesn't actually change
- the stack pointer. I'm pretty sure this is a bug, because
- it adds a race condition if a signal is sent to a thread
- just after it is created (in the previous three instructions). */
- mr r1,r30
- /* Call procedure. */
- mtctr r29
- mr r3,r31
- bctrl
- /* Call _exit with result from procedure. */
- b HIDDEN_JUMPTARGET(_exit)
-
-L(parent):
- /* Parent. Restore registers & return. */
- lmw r29,16(r1)
- addi r1,r1,32
- bnslr+
- b JUMPTARGET(__syscall_error)
-
-L(badargs):
- li r3,EINVAL
- b JUMPTARGET(__syscall_error)
-END (BP_SYM (__clone))
-
-weak_alias (BP_SYM (__clone), BP_SYM (clone))