1/* |
2 * Copyright (c) 2012 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * |
14 * Copyright (c) 2006 The Regents of The University of Michigan 15 * Copyright (c) 2007-2008 The Florida State University 16 * All rights reserved. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions are 20 * met: redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer; --- 26 unchanged lines hidden (view full) --- 48 49/** 50 * @file 51 * 52 * ISA-specific helper functions for locked memory accesses. 53 */ 54 55#include "arch/arm/miscregs.hh" |
56#include "mem/packet.hh" |
57#include "mem/request.hh" 58 59namespace ArmISA 60{ 61template <class XC> 62inline void |
63handleLockedSnoop(XC *xc, PacketPtr pkt, Addr cacheBlockMask) 64{ 65 if (!xc->readMiscReg(MISCREG_LOCKFLAG)) 66 return; 67 68 Addr locked_addr = xc->readMiscReg(MISCREG_LOCKADDR) & cacheBlockMask; 69 Addr snoop_addr = pkt->getAddr(); 70 71 assert((cacheBlockMask & snoop_addr) == snoop_addr); 72 73 if (locked_addr == snoop_addr) 74 xc->setMiscReg(MISCREG_LOCKFLAG, false); 75} 76 77template <class XC> 78inline void |
79handleLockedRead(XC *xc, Request *req) 80{ 81 xc->setMiscReg(MISCREG_LOCKADDR, req->getPaddr() & ~0xf); 82 xc->setMiscReg(MISCREG_LOCKFLAG, true); 83} 84 85 86template <class XC> --- 38 unchanged lines hidden --- |