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) 2006-2007 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright --- 26 unchanged lines hidden (view full) --- 48 * 49 * ISA-specific helper functions for locked memory accesses. 50 */ 51 52#include "arch/registers.hh" 53#include "base/misc.hh" 54#include "base/trace.hh" 55#include "debug/LLSC.hh" |
56#include "mem/packet.hh" |
57#include "mem/request.hh" 58 59namespace MipsISA 60{ |
61template <class XC> 62inline void 63handleLockedSnoop(XC *xc, PacketPtr pkt, Addr cacheBlockMask) 64{ 65 if (!xc->readMiscReg(MISCREG_LLFLAG)) 66 return; |
67 |
68 Addr locked_addr = xc->readMiscReg(MISCREG_LLADDR) & 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_LLFLAG, false); 75} 76 77 |
78template <class XC> 79inline void 80handleLockedRead(XC *xc, Request *req) 81{ 82 xc->setMiscReg(MISCREG_LLADDR, req->getPaddr() & ~0xf); 83 xc->setMiscReg(MISCREG_LLFLAG, true); 84 DPRINTF(LLSC, "[tid:%i]: Load-Link Flag Set & Load-Link" 85 " Address set to %x.\n", --- 55 unchanged lines hidden --- |