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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
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/*- * Copyright (c) 2006,2007 Konstantin Belousov * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: release/9.1.0/sys/i386/linux/linux_support.s 169895 2007-05-23 08:33:06Z kib $ */ #include "linux_assym.h" /* system definitions */ #include <machine/asmacros.h> /* miscellaneous asm macros */ #include "assym.s" futex_fault_decx: movl PCPU(CURPCB),%ecx futex_fault: movl $0,PCB_ONFAULT(%ecx) movl $-EFAULT,%eax ret ENTRY(futex_xchgl) movl PCPU(CURPCB),%ecx movl $futex_fault,PCB_ONFAULT(%ecx) movl 4(%esp),%eax movl 8(%esp),%edx cmpl $VM_MAXUSER_ADDRESS-4,%edx ja futex_fault xchgl %eax,(%edx) movl 12(%esp),%edx movl %eax,(%edx) xorl %eax,%eax movl %eax,PCB_ONFAULT(%ecx) ret ENTRY(futex_addl) movl PCPU(CURPCB),%ecx movl $futex_fault,PCB_ONFAULT(%ecx) movl 4(%esp),%eax movl 8(%esp),%edx cmpl $VM_MAXUSER_ADDRESS-4,%edx ja futex_fault #ifdef SMP lock #endif xaddl %eax,(%edx) movl 12(%esp),%edx movl %eax,(%edx) xorl %eax,%eax movl %eax,PCB_ONFAULT(%ecx) ret ENTRY(futex_orl) movl PCPU(CURPCB),%ecx movl $futex_fault_decx,PCB_ONFAULT(%ecx) movl 8(%esp),%edx cmpl $VM_MAXUSER_ADDRESS-4,%edx ja futex_fault movl (%edx),%eax 1: movl %eax,%ecx orl 4(%esp),%ecx #ifdef SMP lock #endif cmpxchgl %ecx,(%edx) jnz 1b futex_tail: movl 12(%esp),%edx movl %eax,(%edx) xorl %eax,%eax movl PCPU(CURPCB),%ecx movl %eax,PCB_ONFAULT(%ecx) ret ENTRY(futex_andl) movl PCPU(CURPCB),%ecx movl $futex_fault_decx,PCB_ONFAULT(%ecx) movl 8(%esp),%edx cmpl $VM_MAXUSER_ADDRESS-4,%edx ja futex_fault movl (%edx),%eax 1: movl %eax,%ecx andl 4(%esp),%ecx #ifdef SMP lock #endif cmpxchgl %ecx,(%edx) jnz 1b jmp futex_tail ENTRY(futex_xorl) movl PCPU(CURPCB),%ecx movl $futex_fault_decx,PCB_ONFAULT(%ecx) movl 8(%esp),%edx cmpl $VM_MAXUSER_ADDRESS-4,%edx ja futex_fault movl (%edx),%eax 1: movl %eax,%ecx xorl 4(%esp),%ecx #ifdef SMP lock #endif cmpxchgl %ecx,(%edx) jnz 1b jmp futex_tail