1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 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 are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 * Gabe Black 30 */ 31 32#include "arch/isa_traits.hh" 33#include "base/misc.hh" 34#include "cpu/thread_context.hh" 35#include "cpu/base.hh" 36#include "sim/faults.hh" 37#include "sim/process.hh" 38#include "mem/page_table.hh" 39 40#if !FULL_SYSTEM 41void FaultBase::invoke(ThreadContext * tc) 42{ 43 fatal("fault (%s) detected @ PC %p", name(), tc->readPC()); 44} 45#else 46void FaultBase::invoke(ThreadContext * tc) 47{ 48 DPRINTF(Fault, "Fault %s at PC: %#x\n", name(), tc->readPC()); 49 tc->getCpuPtr()->recordEvent(csprintf("Fault %s", name())); 50 51 assert(!tc->misspeculating()); 52} 53#endif 54 55void UnimpFault::invoke(ThreadContext * tc) 56{ 57 panic("Unimpfault: %s\n", panicStr.c_str()); 58}
| 1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 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 are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 * Gabe Black 30 */ 31 32#include "arch/isa_traits.hh" 33#include "base/misc.hh" 34#include "cpu/thread_context.hh" 35#include "cpu/base.hh" 36#include "sim/faults.hh" 37#include "sim/process.hh" 38#include "mem/page_table.hh" 39 40#if !FULL_SYSTEM 41void FaultBase::invoke(ThreadContext * tc) 42{ 43 fatal("fault (%s) detected @ PC %p", name(), tc->readPC()); 44} 45#else 46void FaultBase::invoke(ThreadContext * tc) 47{ 48 DPRINTF(Fault, "Fault %s at PC: %#x\n", name(), tc->readPC()); 49 tc->getCpuPtr()->recordEvent(csprintf("Fault %s", name())); 50 51 assert(!tc->misspeculating()); 52} 53#endif 54 55void UnimpFault::invoke(ThreadContext * tc) 56{ 57 panic("Unimpfault: %s\n", panicStr.c_str()); 58}
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60void PageTableFault::invoke(ThreadContext *tc) 61{ 62 Process *p = tc->getProcessPtr(); 63 64 // We've accessed the next page of the stack, so extend the stack 65 // to cover it. 66 if(vaddr < p->stack_min && vaddr >= p->stack_min - TheISA::PageBytes) 67 { 68 p->stack_min -= TheISA::PageBytes; 69 if(p->stack_base - p->stack_min > 8*1024*1024) 70 fatal("Over max stack size for one thread\n"); 71 p->pTable->allocate(p->stack_min, TheISA::PageBytes); 72 warn("Increasing stack size by one page."); 73 } 74 // Otherwise, we have an unexpected page fault. Report that fact, 75 // and what address was accessed to cause the fault. 76 else 77 { 78 panic("Page table fault when accessing virtual address %#x\n", vaddr); 79 } 80}
| 60void PageTableFault::invoke(ThreadContext *tc) 61{ 62 Process *p = tc->getProcessPtr(); 63 64 // We've accessed the next page of the stack, so extend the stack 65 // to cover it. 66 if(vaddr < p->stack_min && vaddr >= p->stack_min - TheISA::PageBytes) 67 { 68 p->stack_min -= TheISA::PageBytes; 69 if(p->stack_base - p->stack_min > 8*1024*1024) 70 fatal("Over max stack size for one thread\n"); 71 p->pTable->allocate(p->stack_min, TheISA::PageBytes); 72 warn("Increasing stack size by one page."); 73 } 74 // Otherwise, we have an unexpected page fault. Report that fact, 75 // and what address was accessed to cause the fault. 76 else 77 { 78 panic("Page table fault when accessing virtual address %#x\n", vaddr); 79 } 80}
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