The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux_support.s

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
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    1 /*-
    2  * Copyright (c) 2006,2007 Konstantin Belousov
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD: releng/10.3/sys/i386/linux/linux_support.s 169895 2007-05-23 08:33:06Z kib $
   30  */
   31 
   32 #include "linux_assym.h"                /* system definitions */
   33 #include <machine/asmacros.h>           /* miscellaneous asm macros */
   34 
   35 #include "assym.s"
   36 
   37 futex_fault_decx:
   38         movl    PCPU(CURPCB),%ecx
   39 futex_fault:
   40         movl    $0,PCB_ONFAULT(%ecx)
   41         movl    $-EFAULT,%eax
   42         ret
   43 
   44 ENTRY(futex_xchgl)
   45         movl    PCPU(CURPCB),%ecx
   46         movl    $futex_fault,PCB_ONFAULT(%ecx)
   47         movl    4(%esp),%eax
   48         movl    8(%esp),%edx
   49         cmpl    $VM_MAXUSER_ADDRESS-4,%edx
   50         ja      futex_fault
   51         xchgl   %eax,(%edx)
   52         movl    12(%esp),%edx
   53         movl    %eax,(%edx)
   54         xorl    %eax,%eax
   55         movl    %eax,PCB_ONFAULT(%ecx)
   56         ret
   57 
   58 ENTRY(futex_addl)
   59         movl    PCPU(CURPCB),%ecx
   60         movl    $futex_fault,PCB_ONFAULT(%ecx)
   61         movl    4(%esp),%eax
   62         movl    8(%esp),%edx
   63         cmpl    $VM_MAXUSER_ADDRESS-4,%edx
   64         ja      futex_fault
   65 #ifdef SMP
   66         lock
   67 #endif
   68         xaddl   %eax,(%edx)
   69         movl    12(%esp),%edx
   70         movl    %eax,(%edx)
   71         xorl    %eax,%eax
   72         movl    %eax,PCB_ONFAULT(%ecx)
   73         ret
   74 
   75 ENTRY(futex_orl)
   76         movl    PCPU(CURPCB),%ecx
   77         movl    $futex_fault_decx,PCB_ONFAULT(%ecx)
   78         movl    8(%esp),%edx
   79         cmpl    $VM_MAXUSER_ADDRESS-4,%edx
   80         ja      futex_fault
   81         movl    (%edx),%eax
   82 1:      movl    %eax,%ecx
   83         orl     4(%esp),%ecx
   84 #ifdef SMP
   85         lock
   86 #endif
   87         cmpxchgl %ecx,(%edx)
   88         jnz     1b
   89 futex_tail:     
   90         movl    12(%esp),%edx
   91         movl    %eax,(%edx)
   92         xorl    %eax,%eax
   93         movl    PCPU(CURPCB),%ecx
   94         movl    %eax,PCB_ONFAULT(%ecx)
   95         ret
   96 
   97 ENTRY(futex_andl)
   98         movl    PCPU(CURPCB),%ecx
   99         movl    $futex_fault_decx,PCB_ONFAULT(%ecx)
  100         movl    8(%esp),%edx
  101         cmpl    $VM_MAXUSER_ADDRESS-4,%edx
  102         ja      futex_fault
  103         movl    (%edx),%eax
  104 1:      movl    %eax,%ecx
  105         andl    4(%esp),%ecx
  106 #ifdef SMP
  107         lock
  108 #endif
  109         cmpxchgl %ecx,(%edx)
  110         jnz     1b
  111         jmp     futex_tail
  112 
  113 ENTRY(futex_xorl)
  114         movl    PCPU(CURPCB),%ecx
  115         movl    $futex_fault_decx,PCB_ONFAULT(%ecx)
  116         movl    8(%esp),%edx
  117         cmpl    $VM_MAXUSER_ADDRESS-4,%edx
  118         ja      futex_fault
  119         movl    (%edx),%eax
  120 1:      movl    %eax,%ecx
  121         xorl    4(%esp),%ecx
  122 #ifdef SMP
  123         lock
  124 #endif
  125         cmpxchgl %ecx,(%edx)
  126         jnz     1b
  127         jmp     futex_tail

Cache object: 6d6b74e730fd23c3c6475ce2cf86a713


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