2003-01-05 07:05:40 +00:00
|
|
|
/* Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
|
2000-08-02 15:15:00 +00:00
|
|
|
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
|
|
|
|
This file is part of the GNU C Library.
|
|
|
|
|
|
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
2001-07-06 04:58:11 +00:00
|
|
|
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.
|
2000-08-02 15:15:00 +00:00
|
|
|
|
|
|
|
|
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
|
2001-07-06 04:58:11 +00:00
|
|
|
Lesser General Public License for more details.
|
2000-08-02 15:15:00 +00:00
|
|
|
|
2001-07-06 04:58:11 +00:00
|
|
|
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. */
|
2000-08-02 15:15:00 +00:00
|
|
|
|
2003-01-05 07:05:40 +00:00
|
|
|
#include <sysdep-cancel.h>
|
2000-08-02 15:15:00 +00:00
|
|
|
#include <socketcall.h>
|
|
|
|
|
|
|
|
|
|
/* &%/$&!! preprocessor */
|
|
|
|
|
#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
|
|
|
|
|
|
|
|
|
|
#ifndef NARGS /* the socket.o object is compiled directly ... */
|
|
|
|
|
#define NARGS 3
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
.globl __socket
|
|
|
|
|
ENTRY(__socket)
|
|
|
|
|
|
|
|
|
|
/* Save registers and setup stack. */
|
|
|
|
|
stm %r6,%r15,24(%r15) /* save registers */
|
|
|
|
|
lr %r1,%r15
|
|
|
|
|
l %r0,4(0,%r15) /* load eos */
|
|
|
|
|
ahi %r15,-120 /* buy stack space */
|
|
|
|
|
st %r1,0(0,%r15) /* store back chain */
|
|
|
|
|
st %r0,4(0,%r15) /* store eos */
|
|
|
|
|
|
|
|
|
|
/* Reorder arguments */
|
|
|
|
|
#if (NARGS >= 6)
|
|
|
|
|
mvc 0x74(4,%r15),216(%r15) /* move between parameter lists */
|
|
|
|
|
#endif
|
|
|
|
|
#if (NARGS >= 5)
|
|
|
|
|
st %r6,0x70(0,%r15) /* store into parameter list */
|
|
|
|
|
#endif
|
|
|
|
|
#if (NARGS >= 4)
|
|
|
|
|
st %r5,0x6C(0,%r15) /* store into parameter list */
|
|
|
|
|
#endif
|
|
|
|
|
#if (NARGS >= 3)
|
|
|
|
|
st %r4,0x68(0,%r15) /* store into parameter list */
|
|
|
|
|
#endif
|
|
|
|
|
#if (NARGS >= 2)
|
|
|
|
|
st %r3,0x64(0,%r15) /* store into parameter list */
|
|
|
|
|
st %r2,0x60(0,%r15)
|
|
|
|
|
#endif
|
2003-01-05 07:05:40 +00:00
|
|
|
|
|
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
|
|
|
SINGLE_THREAD_P (%r4)
|
|
|
|
|
jne L(socket_cancel)
|
|
|
|
|
#endif
|
|
|
|
|
|
2000-08-02 15:15:00 +00:00
|
|
|
/* load subcode for socket syscall */
|
|
|
|
|
lhi %r2,P(SOCKOP_,socket)
|
|
|
|
|
la %r3,0x60(0,%r15) /* load address of parameter list */
|
|
|
|
|
|
|
|
|
|
/* Do the system call trap. */
|
|
|
|
|
svc SYS_ify(socketcall)
|
|
|
|
|
|
2003-01-05 07:05:40 +00:00
|
|
|
4:
|
2000-08-02 15:15:00 +00:00
|
|
|
l %r15,0(0,%r15) /* load back chain */
|
|
|
|
|
lm %r6,15,24(%r15) /* load registers */
|
|
|
|
|
|
|
|
|
|
/* gpr2 is < 0 if there was an error. */
|
|
|
|
|
lhi %r0,-125
|
|
|
|
|
clr %r2,%r0
|
|
|
|
|
jnl SYSCALL_ERROR_LABEL
|
|
|
|
|
|
|
|
|
|
/* Successful; return the syscall's value. */
|
|
|
|
|
br %r14
|
|
|
|
|
|
2003-01-05 07:05:40 +00:00
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
|
|
|
L(socket_cancel):
|
|
|
|
|
basr %r13,0
|
|
|
|
|
1: l %r1,2f-1b(%r13)
|
|
|
|
|
/* call CENABLE. */
|
|
|
|
|
bas %r14,0(%r13,%r1)
|
|
|
|
|
lr %r0,%r2
|
|
|
|
|
|
|
|
|
|
/* load subcode for socket syscall */
|
|
|
|
|
lhi %r2,P(SOCKOP_,socket)
|
|
|
|
|
la %r3,0x60(0,%r15) /* load address of parameter list */
|
|
|
|
|
|
|
|
|
|
/* Do the system call trap. */
|
|
|
|
|
svc SYS_ify(socketcall)
|
|
|
|
|
|
|
|
|
|
l %r3,3f-1b(%r13)
|
|
|
|
|
lr %r12,%r2
|
|
|
|
|
lr %r2,%r0
|
|
|
|
|
/* call CDISABLE. */
|
|
|
|
|
bas %r14,0(%r13,%r3)
|
|
|
|
|
lr %r2,%r12
|
|
|
|
|
j 4b
|
|
|
|
|
|
|
|
|
|
2: .long CENABLE-1b
|
|
|
|
|
3: .long CDISABLE-1b
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
SYSCALL_ERROR_HANDLER
|
|
|
|
|
END (__socket)
|
2000-08-02 15:15:00 +00:00
|
|
|
|
|
|
|
|
#ifndef NO_WEAK_ALIAS
|
|
|
|
|
weak_alias (__socket, socket)
|
|
|
|
|
#endif
|
