mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
4a17085f15
2003-07-12 Kaz Kojima <kkojima@rr.iij4u.or.jp> * sysdeps/unix/sysv/linux/sh/socket.S: Save and restore the PR register across CENABLE and CDISABLE.
132 lines
3.5 KiB
ArmAsm
132 lines
3.5 KiB
ArmAsm
/* Copyright (C) 1999, 2000, 2003 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 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
|
|
#define __socket P(__,socket)
|
|
#endif
|
|
|
|
#define PUSHARGS_1 mov.l r4,@-r15
|
|
#define PUSHARGS_2 mov.l r5,@-r15; PUSHARGS_1
|
|
#define PUSHARGS_3 mov.l r6,@-r15; PUSHARGS_2
|
|
#define PUSHARGS_4 mov.l r7,@-r15; PUSHARGS_3
|
|
#define PUSHARGS_5 PUSHARGS_4 /* Caller has already pushed arg 5 */
|
|
#define PUSHARGS_6 PUSHARGS_4 /* Caller has already pushed arg 5,6 */
|
|
|
|
#define POPARGS_1 add #4,r15
|
|
#define POPARGS_2 add #8,r15
|
|
#define POPARGS_3 add #12,r15
|
|
#define POPARGS_4 add #16,r15
|
|
#define POPARGS_5 add #16,r15
|
|
#define POPARGS_6 add #16,r15
|
|
|
|
#ifndef NARGS
|
|
#define NARGS 3 /* If we were called with no wrapper, this is really socket() */
|
|
#endif
|
|
|
|
.globl __socket
|
|
ENTRY (__socket)
|
|
/* This will not work in the case of a socket call being interrupted
|
|
by a signal. If the signal handler uses any stack the arguments
|
|
to socket will be trashed. The results of a restart of any
|
|
socket call are then unpredictable. */
|
|
|
|
/* Push args onto the stack. */
|
|
P(PUSHARGS_,NARGS)
|
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
SINGLE_THREAD_P
|
|
bf .Lsocket_cancel
|
|
#endif
|
|
|
|
/* Do the system call trap. */
|
|
mov #+P(SOCKOP_,socket), r4
|
|
mov r15, r5
|
|
mov.l .L1,r3
|
|
trapa #0x12
|
|
|
|
/* Pop args off the stack */
|
|
P(POPARGS_,NARGS)
|
|
|
|
mov r0, r1
|
|
mov #-12, r2
|
|
shad r2, r1
|
|
not r1, r1 // r1=0 means r0 = -1 to -4095
|
|
tst r1, r1 // i.e. error in linux
|
|
bf .Lpseudo_end
|
|
.Lsyscall_error:
|
|
SYSCALL_ERROR_HANDLER
|
|
.Lpseudo_end:
|
|
/* Successful; return the syscall's value. */
|
|
rts
|
|
nop
|
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
.Lsocket_cancel:
|
|
/* Enable asynchronous cancellation. */
|
|
sts.l pr,@-r15
|
|
CENABLE
|
|
lds.l @r15+,pr
|
|
|
|
/* Do the system call trap. */
|
|
mov #+P(SOCKOP_,socket), r4
|
|
mov r15, r5
|
|
mov.l .L1,r3
|
|
trapa #0x12
|
|
|
|
sts.l pr,@-r15
|
|
mov.l r0,@-r15
|
|
CDISABLE
|
|
mov.l @r15+,r0
|
|
lds.l @r15+,pr
|
|
|
|
/* Pop args off the stack */
|
|
P(POPARGS_,NARGS)
|
|
|
|
mov r0, r1
|
|
mov #-12, r2
|
|
shad r2, r1
|
|
not r1, r1 // r1=0 means r0 = -1 to -4095
|
|
tst r1, r1 // i.e. error in linux
|
|
bf .Lpseudo_end
|
|
bra .Lsyscall_error
|
|
nop
|
|
#endif
|
|
.align 2
|
|
.L1:
|
|
.long SYS_ify(socketcall)
|
|
|
|
PSEUDO_END (__socket)
|
|
|
|
weak_alias (__socket, socket)
|