mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
137 lines
3.8 KiB
ArmAsm
137 lines
3.8 KiB
ArmAsm
/* Copyright (C) 2001-2015 Free Software Foundation, Inc.
|
|
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
|
|
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>
|
|
|
|
/* &%/$&!! 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. */
|
|
stmg %r6,%r15,48(%r15) /* Save registers. */
|
|
cfi_offset (%r15,-40)
|
|
cfi_offset (%r14,-48)
|
|
cfi_offset (%r13,-56)
|
|
cfi_offset (%r12,-64)
|
|
cfi_offset (%r11,-72)
|
|
cfi_offset (%r10,-80)
|
|
cfi_offset (%r9,-88)
|
|
cfi_offset (%r8,-96)
|
|
cfi_offset (%r7,-104)
|
|
cfi_offset (%r6,-112)
|
|
lgr %r1,%r15
|
|
lg %r0,8(%r15) /* Load eos. */
|
|
aghi %r15,-208 /* Buy stack space. */
|
|
cfi_adjust_cfa_offset (208)
|
|
stg %r1,0(%r15) /* Store back chain. */
|
|
stg %r0,8(%r15) /* Store eos. */
|
|
|
|
/* Reorder arguments. */
|
|
#if (NARGS >= 6)
|
|
mvc 200(8,%r15),368(%r15) /* Move between parameter lists. */
|
|
#endif
|
|
#if (NARGS >= 5)
|
|
stg %r6,192(%r15) /* Store into parameter list. */
|
|
#endif
|
|
#if (NARGS >= 4)
|
|
stg %r5,184(%r15) /* Store into parameter list. */
|
|
#endif
|
|
#if (NARGS >= 3)
|
|
stg %r4,176(%r15) /* Store into parameter list. */
|
|
#endif
|
|
#if (NARGS >= 2)
|
|
stg %r3,168(%r15) /* Store into parameter list. */
|
|
stg %r2,160(%r15)
|
|
#endif
|
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
SINGLE_THREAD_P
|
|
jne L(socket_cancel)
|
|
#endif
|
|
|
|
/* Load subcode for socket syscall. */
|
|
lghi %r2,P(SOCKOP_,socket)
|
|
la %r3,160(%r15) /* Load address of parameter list. */
|
|
|
|
/* Do the system call trap. */
|
|
svc SYS_ify(socketcall)
|
|
|
|
4:
|
|
lg %r15,0(%r15) /* Load back chain. */
|
|
lmg %r6,15,48(%r15) /* Load registers. */
|
|
|
|
/* gpr2 is < 0 if there was an error. */
|
|
lghi %r0,-125
|
|
clgr %r2,%r0
|
|
jgnl SYSCALL_ERROR_LABEL
|
|
|
|
/* Successful; return the syscall's value. */
|
|
br %r14
|
|
|
|
#if defined NEED_CANCELLATION && defined CENABLE
|
|
L(socket_cancel):
|
|
brasl %r14,CENABLE
|
|
lr %r0,%r2
|
|
|
|
/* Load subcode for socket syscall. */
|
|
lghi %r2,P(SOCKOP_,socket)
|
|
la %r3,160(%r15) /* Load address of parameter list. */
|
|
|
|
/* Do the system call trap. */
|
|
svc SYS_ify(socketcall)
|
|
|
|
lgr %r12,%r2
|
|
lr %r2,%r0
|
|
brasl %r14,CDISABLE
|
|
|
|
lgr %r2,%r12
|
|
j 4b
|
|
#endif
|
|
|
|
SYSCALL_ERROR_HANDLER
|
|
END (__socket)
|
|
|
|
#ifndef NO_WEAK_ALIAS
|
|
weak_alias (__socket, socket)
|
|
#endif
|
|
|