f4fd6b797e
- Update some comments and fix minor bugs. Minor cosmetic changes. - Replace some spinlocks with mutexes and rwlocks. - Change the process private semaphores to use mutexes and condition variables instead of doing the synchronization directly. Spinlocks are no longer used by the semaphore code.
139 lines
3.6 KiB
ArmAsm
139 lines
3.6 KiB
ArmAsm
/* $NetBSD: _context_u.S,v 1.5 2007/09/08 22:49:51 ad Exp $ */
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/*-
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* Copyright (c) 2001, 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Nathan J. Williams, and by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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#include "assym.h"
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#define FPSAVE(reg) fnsave UC_FPREGS(reg)
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#define FPLOAD(reg) frstor UC_FPREGS(reg)
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#include "_getsetc.S"
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ENTRY(_getcontext_u_s87)
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movl 4(%esp), %ecx
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movl 0(%esp), %edx
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GETC
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movl %esp, %eax
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addl $4, %eax
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movl %eax, (UC_REGS + _REG_UESP * 4)(%ecx)
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xorl %eax, %eax
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ret
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ENTRY(_setcontext_u_s87)
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movl 4(%esp), %ecx
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SETC
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ENTRY(_swapcontext_u_s87)
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movl 4(%esp), %ecx
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movl 0(%esp), %edx
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GETC
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movl %esp, %eax
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addl $4, %eax
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movl %eax, (UC_REGS + _REG_UESP * 4)(%ecx)
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movl 8(%esp), %ecx
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SETC
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#undef FPSAVE
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#undef FPLOAD
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#define FPSAVE(reg) fxsave UC_FXSAVEREGS(reg)
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#define FPLOAD(reg) fxrstor UC_FXSAVEREGS(reg)
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#include "_getsetc.S"
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ENTRY(_getcontext_u_xmm)
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movl 4(%esp), %ecx
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movl 0(%esp), %edx
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GETC
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movl %esp, %eax
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addl $4, %eax
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movl %eax, (UC_REGS + _REG_UESP * 4)(%ecx)
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xorl %eax, %eax
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ret
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ENTRY(_setcontext_u_xmm)
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movl 4(%esp), %ecx
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SETC
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ENTRY(_swapcontext_u_xmm)
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movl 4(%esp), %ecx
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movl 0(%esp), %edx
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GETC
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movl %esp, %eax
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addl $4, %eax
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movl %eax, (UC_REGS + _REG_UESP * 4)(%ecx)
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movl 8(%esp), %ecx
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SETC
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ENTRY(pthread__atomic_cas_ptr)
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movl 4(%esp), %ecx
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movl 8(%esp), %eax
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movl 12(%esp), %edx
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movl (%eax), %eax
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lock
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cmpxchgl %edx, (%ecx)
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jnz 1f
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mov $1, %eax
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ret
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1:
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mov 8(%esp), %edx
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mov %eax, (%edx)
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mov $0, %eax
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ret
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ENTRY(pthread__atomic_swap_ptr)
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movl 4(%esp), %ecx
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movl 8(%esp), %eax
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xchgl %eax, (%ecx)
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ret
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ENTRY(pthread__membar_full)
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lock
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addl $0, -4(%esp)
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ret
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ENTRY(pthread__membar_producer)
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/* A store is enough */
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movl $0, -4(%esp)
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ret
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ENTRY(pthread__membar_consumer)
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lock
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addl $0, -4(%esp)
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ret
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