[apple/xnu.git] / libsyscall / custom / __pipe.s

/*
 * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
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/* Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. */

#include "SYS.h"

#if defined(__i386__)

PSEUDO_INT(___pipe, pipe, 0)
        movl    4(%esp),%ecx
        movl    %eax,(%ecx)
        movl    %edx,4(%ecx)
        xorl    %eax,%eax
        ret

#elif defined(__x86_64__)

PSEUDO(___pipe, pipe, 0, cerror_nocancel)
        movl    %eax, (%rdi)
        movl    %edx, 4(%rdi)
        xorl    %eax, %eax
        ret

#elif defined(__arm__)

MI_ENTRY_POINT(___pipe)
        mov             r3,r0              // save fildes across syscall
        SYSCALL_NONAME(pipe, 0, cerror_nocancel)
        str     r0, [r3, #0]
        str     r1, [r3, #4]
        mov             r0,#0
        bx              lr

#elif defined(__arm64__)

MI_ENTRY_POINT(___pipe)
        mov             x9, x0                          // Stash FD array
        SYSCALL_NONAME(pipe, 0, cerror_nocancel)
        stp             w0, w1, [x9]            // Save results
        mov             x0, #0                          // Success
        ret                                                     // Done

#else
#error Unsupported architecture
#endif