2014-01-01 11:03:15 +00:00
|
|
|
/* Copyright (C) 2009-2014 Free Software Foundation, Inc.
|
2012-01-10 05:38:42 +00:00
|
|
|
|
|
|
|
|
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, see
|
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
|
|
|
|
#include <sysdep-cancel.h>
|
|
|
|
|
#include <socketcall.h>
|
|
|
|
|
|
|
|
|
|
#define P(a, b) P2(a, b)
|
|
|
|
|
#define P2(a, b) a##b
|
|
|
|
|
|
|
|
|
|
/* 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.
|
|
|
|
|
They also #define a 'number-of-arguments' word in NARGS, which
|
|
|
|
|
defaults to 3. */
|
|
|
|
|
|
|
|
|
|
#ifndef NARGS
|
|
|
|
|
# ifdef socket
|
|
|
|
|
# error NARGS not defined
|
|
|
|
|
# endif
|
|
|
|
|
# define NARGS 3
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Stack usage:
|
|
|
|
|
0 - r15 (return address)
|
|
|
|
|
4 - 12 args to syscall
|
|
|
|
|
16 - scratch for cancellation state
|
|
|
|
|
20 - scratch for return value
|
|
|
|
|
*/
|
|
|
|
|
#define stackadjust 24
|
|
|
|
|
|
|
|
|
|
#ifndef __socket
|
|
|
|
|
# ifndef NO_WEAK_ALIAS
|
|
|
|
|
# define __socket P(__,socket)
|
|
|
|
|
# else
|
|
|
|
|
# define __socket socket
|
|
|
|
|
# endif
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
.text
|
|
|
|
|
ENTRY(__socket)
|
|
|
|
|
addik r1,r1,-stackadjust
|
|
|
|
|
swi r15,r1,0
|
|
|
|
|
#if NARGS >= 1
|
|
|
|
|
swi r5,r1,stackadjust+4
|
|
|
|
|
#endif
|
|
|
|
|
#if NARGS >= 2
|
|
|
|
|
swi r6,r1,stackadjust+8
|
|
|
|
|
#endif
|
|
|
|
|
#if NARGS >= 3
|
|
|
|
|
swi r7,r1,stackadjust+12
|
|
|
|
|
#endif
|
|
|
|
|
#if NARGS >= 4
|
|
|
|
|
swi r8,r1,stackadjust+16
|
|
|
|
|
#endif
|
|
|
|
|
#if NARGS >= 5
|
|
|
|
|
swi r9,r1,stackadjust+20
|
|
|
|
|
#endif
|
|
|
|
|
#if NARGS >= 6
|
|
|
|
|
swi r10,r1,stackadjust+24
|
|
|
|
|
#endif
|
|
|
|
|
/* The rest of the args (if any) are on the caller's stack already. */
|
|
|
|
|
|
|
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
|
|
|
SINGLE_THREAD_P
|
|
|
|
|
bnei r12,L(socket_cancel)
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
addik r12,r0,SYS_ify(socketcall)
|
|
|
|
|
addik r5,r0,P(SOCKOP_,socket)
|
|
|
|
|
addik r6,r1,stackadjust+4
|
|
|
|
|
brki r14,8
|
|
|
|
|
addk r0,r0,r0
|
|
|
|
|
lwi r15,r1,0
|
|
|
|
|
addik r1,r1,stackadjust
|
|
|
|
|
addik r4,r0,-4095
|
|
|
|
|
cmpu r4,r4,r3
|
|
|
|
|
bgei r4,SYSCALL_ERROR_LABEL
|
|
|
|
|
rtsd r15,8
|
|
|
|
|
addk r0,r0,r0
|
|
|
|
|
|
|
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
|
|
|
L(socket_cancel):
|
|
|
|
|
CENABLE
|
|
|
|
|
swi r3,r1,16
|
|
|
|
|
addik r12,r0,SYS_ify(socketcall)
|
|
|
|
|
addik r5,r0,P(SOCKOP_,socket)
|
|
|
|
|
addik r6,r1,stackadjust+4
|
|
|
|
|
brki r14,8
|
|
|
|
|
addk r0,r0,r0
|
|
|
|
|
swi r3,r1,20
|
|
|
|
|
lwi r5,r1,16
|
|
|
|
|
CDISABLE
|
|
|
|
|
lwi r3,r1,20
|
|
|
|
|
lwi r15,r1,0
|
|
|
|
|
addik r1,r1,stackadjust
|
|
|
|
|
addik r4,r0,-4095
|
|
|
|
|
cmpu r4,r4,r3
|
|
|
|
|
bgei r4,SYSCALL_ERROR_LABEL
|
|
|
|
|
rtsd r15,8
|
|
|
|
|
addk r0,r0,r0
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
PSEUDO_END (__socket)
|
|
|
|
|
|
|
|
|
|
#ifndef NO_WEAK_ALIAS
|
|
|
|
|
weak_alias (__socket, socket)
|
|
|
|
|
#endif
|
