b09bbc17716f1922c8ce62763863fbeaa6c057c6
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
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14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Nathan Binkert
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"
41 void FaultBase::invoke(ThreadContext
* tc
)
43 fatal("fault (%s) detected @ PC %p", name(), tc
->readPC());
46 void FaultBase::invoke(ThreadContext
* tc
)
48 DPRINTF(Fault
, "Fault %s at PC: %#x\n", name(), tc
->readPC());
49 tc
->getCpuPtr()->recordEvent(csprintf("Fault %s", name()));
51 assert(!tc
->misspeculating());
55 void UnimpFault::invoke(ThreadContext
* tc
)
57 panic("Unimpfault: %s\n", panicStr
.c_str());
60 void PageTableFault::invoke(ThreadContext
*tc
)
62 Process
*p
= tc
->getProcessPtr();
64 // We've accessed the next page of the stack, so extend the stack
66 if(vaddr
< p
->stack_min
&& vaddr
>= p
->stack_min
- TheISA::PageBytes
)
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.");
74 // Otherwise, we have an unexpected page fault. Report that fact,
75 // and what address was accessed to cause the fault.
78 panic("Page table fault when accessing virtual address %#x\n", vaddr
);