diff options
Diffstat (limited to 'newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S')
| -rw-r--r-- | newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S b/newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S deleted file mode 100644 index dd00c2fb5..000000000 --- a/newlib/libc/sys/linux/linuxthreads/machine/i386/clone.S +++ /dev/null @@ -1,95 +0,0 @@ -/* Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed 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 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. */ - -/* 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 <sysdep.h> -#define _ERRNO_H 1 -#include <bits/errno.h> -#include <asm/unistd.h> -#include <bp-sym.h> -#include <bp-asm.h> - -/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */ - -#define PARMS LINKAGE /* no space for saved regs */ -#define FUNC PARMS -#define STACK FUNC+4 -#define FLAGS STACK+PTR_SIZE -#define ARG FLAGS+4 - - .text -ENTRY (BP_SYM (__clone)) - /* Sanity check arguments. */ - movl $-EINVAL,%eax - movl FUNC(%esp),%ecx /* no NULL function pointers */ -#ifdef PIC - jecxz SYSCALL_ERROR_LABEL -#else - testl %ecx,%ecx - jz SYSCALL_ERROR_LABEL -#endif - movl STACK(%esp),%ecx /* no NULL stack pointers */ -#ifdef PIC - jecxz SYSCALL_ERROR_LABEL -#else - testl %ecx,%ecx - jz SYSCALL_ERROR_LABEL -#endif - - /* Insert the argument onto the new stack. */ - subl $8,%ecx - movl ARG(%esp),%eax /* no negative argument counts */ - movl %eax,4(%ecx) - - /* Save the function pointer as the zeroth argument. - It will be popped off in the child in the ebx frobbing below. */ - movl FUNC(%esp),%eax - movl %eax,0(%ecx) - - /* Do the system call */ - pushl %ebx - movl FLAGS+4(%esp),%ebx - movl $SYS_ify(clone),%eax - int $0x80 - popl %ebx - - test %eax,%eax - jl SYSCALL_ERROR_LABEL - jz thread_start - -L(pseudo_end): - ret - -thread_start: - subl %ebp,%ebp /* terminate the stack frame */ - call *%ebx -#ifdef PIC - call L(here) -L(here): - popl %ebx - addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ebx -#endif - pushl %eax - call JUMPTARGET (_exit) - -PSEUDO_END (BP_SYM (__clone)) - -weak_alias (BP_SYM (__clone), BP_SYM (clone)) |