mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 06:40:09 +00:00
112 lines
3.0 KiB
ArmAsm
112 lines
3.0 KiB
ArmAsm
|
/* Copyright (C) 1996, 1997, 1998 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>
|
||
|
|
|
||
|
|
#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.
|
||
|
|
|
||
|
|
The .S files for the other calls just #define socket and #include this. */
|
||
|
|
|
||
|
|
#ifndef __socket
|
||
|
|
#ifndef NO_WEAK_ALIAS
|
||
|
|
#define __socket P(__,socket)
|
||
|
|
#else
|
||
|
|
#define __socket socket
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
.globl __socket
|
||
|
|
ENTRY (__socket)
|
||
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
||
|
|
SINGLE_THREAD_P
|
||
|
|
jne 1f
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* Save registers. */
|
||
|
|
move.l %d2, %a0
|
||
|
|
|
||
|
|
move.l #SYS_ify (socketcall), %d0 /* System call number in %d0. */
|
||
|
|
|
||
|
|
/* Use ## so `socket' is a separate token that might be #define'd. */
|
||
|
|
move.l #P (SOCKOP_,socket), %d1 /* Subcode is first arg to syscall. */
|
||
|
|
lea 4(%sp), %a1 /* Address of args is 2nd arg. */
|
||
|
|
move.l %a1, %d2
|
||
|
|
|
||
|
|
/* Do the system call trap. */
|
||
|
|
trap #0
|
||
|
|
|
||
|
|
/* Restore registers. */
|
||
|
|
move.l %a0, %d2
|
||
|
|
|
||
|
|
/* %d0 is < 0 if there was an error. */
|
||
|
|
tst.l %d0
|
||
|
|
jmi SYSCALL_ERROR_LABEL
|
||
|
|
|
||
|
|
/* Successful; return the syscall's value. */
|
||
|
|
rts
|
||
|
|
|
||
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
||
|
|
1: /* Enable asynchronous cancellation. */
|
||
|
|
CENABLE
|
||
|
|
|
||
|
|
/* Save registers. */
|
||
|
|
move.l %d2, -(%sp)
|
||
|
|
move.l %d0, -(%sp)
|
||
|
|
|
||
|
|
move.l #SYS_ify (socketcall), %d0 /* System call number in %d0. */
|
||
|
|
|
||
|
|
/* Use ## so `socket' is a separate token that might be #define'd. */
|
||
|
|
move.l #P (SOCKOP_,socket), %d1 /* Subcode is first arg to syscall. */
|
||
|
|
lea 4+8(%sp), %a1 /* Address of args is 2nd arg. */
|
||
|
|
move.l %a1, %d2
|
||
|
|
|
||
|
|
/* Do the system call trap. */
|
||
|
|
trap #0
|
||
|
|
|
||
|
|
/* Restore cancellation. */
|
||
|
|
move.l %d0, %d2
|
||
|
|
CDISABLE
|
||
|
|
addq.l #4, %sp
|
||
|
|
move.l %d2, %d0
|
||
|
|
|
||
|
|
/* Restore registers. */
|
||
|
|
move.l (%sp)+, %d2
|
||
|
|
|
||
|
|
/* %d0 is < 0 if there was an error. */
|
||
|
|
tst.l %d0
|
||
|
|
jmi SYSCALL_ERROR_LABEL
|
||
|
|
|
||
|
|
/* Successful; return the syscall's value. */
|
||
|
|
rts
|
||
|
|
#endif
|
||
|
|
|
||
|
|
PSEUDO_END (__socket)
|
||
|
|
|
||
|
|
#ifndef NO_WEAK_ALIAS
|
||
|
|
weak_alias (__socket, socket)
|
||
|
|
#endif
|