diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/paccept.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/paccept.S | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/paccept.S b/sysdeps/unix/sysv/linux/i386/paccept.S new file mode 100644 index 0000000000..02ad78dd47 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/paccept.S @@ -0,0 +1,135 @@ +/* Copyright (C) 1995-1998,2002,2003,2005,2008 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-cancel.h> +#include <socketcall.h> +#include <tls.h> + +#define _NSIG 64 + +#define P(a, b) P2(a, b) +#define P2(a, b) a##b + + .text +/* The socket-oriented system calls are handled unusally in Linux. + They are all gated through the single `socketcall' system call number. + `socketcall' takes two arguments: the first is the subcode, specifying + which socket function is being called; and the second is a pointer to + the arguments to the specific function. */ + +ENTRY(do_paccept) +#ifdef SOCKOP_paccept + subl $6*4, %esp + cfi_adjust_cfa_offset(6*4) + + movl (%eax), %ecx + movl %ecx, (%esp) + movl 4(%eax), %ecx + movl %ecx, 4(%esp) + movl 8(%eax), %ecx + movl %ecx, 8(%esp) + movl 12(%eax), %ecx + movl %ecx, 12(%esp) + movl $(_NSIG / 8), 16(%esp) + movl 16(%eax), %ecx + movl %ecx, 20(%esp) + + movl $SYS_ify(socketcall), %eax /* System call number in %eax. */ + + movl $SOCKOP_paccept, %ebx /* Subcode is first arg to syscall. */ + movl %esp, %ecx /* Address of args is 2nd arg. */ + + /* Do the system call trap. */ + ENTER_KERNEL + + addl $6*4, %esp + cfi_adjust_cfa_offset(-6*4) + + /* %eax is < 0 if there was an error. */ + cmpl $-125, %eax + jae SYSCALL_ERROR_LABEL +#else + movl $-ENOSYS, %eax + jmp SYSCALL_ERROR_LABEL + + .section .gnu.glibc-stub.paccept + .previous + .section .gnu.warning.paccept + .string "warning: paccept is not implemented and will always fail" + .previous +#endif +L(pseudo_end): + ret +PSEUDO_END(do_paccept) + + + .globl paccept +ENTRY (paccept) +#ifdef CENABLE + SINGLE_THREAD_P + jne 1f +#endif + + /* Save registers. */ + movl %ebx, %edx + cfi_register (3, 2) + + lea 4(%esp), %eax + call do_paccept + + /* Restore registers. */ + movl %edx, %ebx + cfi_restore (3) + + ret + +#ifdef CENABLE + /* We need one more register. */ +1: pushl %esi + cfi_adjust_cfa_offset(4) + + /* Enable asynchronous cancellation. */ + CENABLE + movl %eax, %esi + cfi_offset(6, -8) /* %esi */ + + /* Save registers. */ + movl %ebx, %edx + cfi_register (3, 2) + + lea 8(%esp), %eax + call do_paccept + + /* Restore registers. */ + movl %edx, %ebx + cfi_restore (3) + + /* Restore the cancellation. */ + xchgl %esi, %eax + CDISABLE + + /* Restore registers. */ + movl %esi, %eax + popl %esi + cfi_restore (6) + cfi_adjust_cfa_offset(-4) + + /* Successful; return the syscall's value. */ + ret +#endif +PSEUDO_END (paccept) |