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119 lines
2.7 KiB
ArmAsm
119 lines
2.7 KiB
ArmAsm
/* Copyright (C) 1995-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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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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#include <sysdep-cancel.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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/* 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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They also #define a 'number-of-arguments' word in NARGS, which
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defaults to 3. */
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#ifndef NARGS
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#ifdef socket
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#error NARGS not defined
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#endif
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#define NARGS 3
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#endif
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/* 0(r1) and 4(r1) are reserved by the ABI, 8(r1), 12(r1), 16(r1) are used
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for temp saves. 44(r1) is used to save r30. */
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#define stackblock 20
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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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.text
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ENTRY(__socket)
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stwu r1,-48(r1)
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cfi_adjust_cfa_offset(48)
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#if NARGS >= 1
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stw r3,stackblock(r1)
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#endif
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#if NARGS >= 2
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stw r4,4+stackblock(r1)
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#endif
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#if NARGS >= 3
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stw r5,8+stackblock(r1)
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#endif
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#if NARGS >= 4
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stw r6,12+stackblock(r1)
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#endif
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#if NARGS >= 5
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stw r7,16+stackblock(r1)
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#endif
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#if NARGS >= 6
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stw r8,20+stackblock(r1)
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#endif
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#if NARGS >= 7
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#error too many arguments!
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#endif
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#if defined NEED_CANCELLATION && defined CENABLE
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SINGLE_THREAD_P
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bne- .Lsocket_cancel
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#endif
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li r3,P(SOCKOP_,socket)
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addi r4,r1,stackblock
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DO_CALL(SYS_ify(socketcall))
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addi r1,r1,48
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PSEUDO_RET
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#if defined NEED_CANCELLATION && defined CENABLE
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.Lsocket_cancel:
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mflr r9
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stw r9,52(r1)
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cfi_offset (lr, 4)
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CENABLE
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stw r3,16(r1)
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li r3,P(SOCKOP_,socket)
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addi r4,r1,stackblock
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DO_CALL(SYS_ify(socketcall))
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mfcr r0
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stw r3,8(r1)
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stw r0,12(r1)
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lwz r3,16(r1)
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CDISABLE
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lwz r4,52(r1)
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lwz r0,12(r1)
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lwz r3,8(r1)
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mtlr r4
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mtcr r0
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addi r1,r1,48
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PSEUDO_RET
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#endif
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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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