2004-10-23 08:33:35 +08:00
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/* Copyright 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Alexandre Oliva <aoliva@redhat.com>.
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Based on ../i386/socket.S.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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2012-03-10 07:56:38 +08:00
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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2004-10-23 08:33:35 +08:00
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#include <sysdep.h>
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#include <socketcall.h>
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#define P(a, b) P2(a, b)
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#define P2(a, b) a##b
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.text
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/* The socket-oriented system calls are handled unusally in Linux.
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They are all gated through the single `socketcall' system call number.
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`socketcall' takes two arguments: the first is the subcode, specifying
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which socket function is being called; and the second is a pointer to
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the arguments to the specific function.
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The .S files for the other calls just #define socket and #include this. */
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#ifndef __socket
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#ifndef NO_WEAK_ALIAS
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#define __socket P(__,socket)
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#else
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#define __socket socket
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#endif
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#endif
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.globl __socket
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ENTRY (__socket)
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mov d0,(4,sp)
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mov d1,(8,sp)
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mov SYS_ify(socketcall),d0 /* System call number in d0. */
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/* Use ## so `socket' is a separate token that might be #define'd. */
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mov P(SOCKOP_,socket),a0 /* Subcode is first arg to syscall. */
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mov sp,d1
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add 4,d1 /* Address of args is 2nd arg. */
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/* Do the system call trap. */
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syscall 0
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/* d0 is < 0 if there was an error. */
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cmp -126,d0
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bls L(pseudo_end)
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jmp SYSCALL_ERROR_LABEL
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/* Successful; return the syscall's value. */
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L(pseudo_end):
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ret
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PSEUDO_END (__socket)
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#ifndef NO_WEAK_ALIAS
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weak_alias (__socket, socket)
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#endif
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