From 54fc750924ebeeb34d598018b664a886cc3f7ac5 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Wed, 7 Mar 2007 20:04:46 +0000 Subject: [PATCH] Move the magic m5 PageTableFault into sim/faults.[hh,cc] since it's the same across all architectures. --HG-- extra : convert_revision : 18d441eb7ac44df4df41771bfe3dec69f7fa70ec --- src/arch/alpha/faults.cc | 32 -------------------------------- src/arch/alpha/faults.hh | 23 ----------------------- src/arch/mips/faults.cc | 26 -------------------------- src/arch/mips/faults.hh | 24 ------------------------ src/arch/sparc/faults.cc | 28 ---------------------------- src/arch/sparc/faults.hh | 16 ---------------- src/mem/page_table.cc | 2 +- src/sim/faults.cc | 27 ++++++++++++++++++++++++++- src/sim/faults.hh | 12 ++++++++++++ 9 files changed, 39 insertions(+), 151 deletions(-) diff --git a/src/arch/alpha/faults.cc b/src/arch/alpha/faults.cc index 9a8429635..149729351 100644 --- a/src/arch/alpha/faults.cc +++ b/src/arch/alpha/faults.cc @@ -59,12 +59,6 @@ FaultName ArithmeticFault::_name = "arith"; FaultVect ArithmeticFault::_vect = 0x0501; FaultStat ArithmeticFault::_count; -#if !FULL_SYSTEM -FaultName PageTableFault::_name = "page_table_fault"; -FaultVect PageTableFault::_vect = 0x0000; -FaultStat PageTableFault::_count; -#endif - FaultName InterruptFault::_name = "interrupt"; FaultVect InterruptFault::_vect = 0x0101; FaultStat InterruptFault::_count; @@ -182,32 +176,6 @@ void ItbFault::invoke(ThreadContext * tc) AlphaFault::invoke(tc); } -#else //!FULL_SYSTEM - -void PageTableFault::invoke(ThreadContext *tc) -{ - Process *p = tc->getProcessPtr(); - - // address is higher than the stack region or in the current stack region - if (vaddr > p->stack_base || vaddr > p->stack_min) - FaultBase::invoke(tc); - - // We've accessed the next page - if (vaddr > p->stack_min - PageBytes) { - DPRINTF(Stack, - "Increasing stack %#x:%#x to %#x:%#x because of access to %#x", - p->stack_min, p->stack_base, p->stack_min - PageBytes, - p->stack_base, vaddr); - p->stack_min -= PageBytes; - if (p->stack_base - p->stack_min > 8*1024*1024) - fatal("Over max stack size for one thread\n"); - p->pTable->allocate(p->stack_min, PageBytes); - } else { - warn("Page fault on address %#x\n", vaddr); - FaultBase::invoke(tc); - } -} - #endif } // namespace AlphaISA diff --git a/src/arch/alpha/faults.hh b/src/arch/alpha/faults.hh index e2c3441e9..6342122c2 100644 --- a/src/arch/alpha/faults.hh +++ b/src/arch/alpha/faults.hh @@ -85,29 +85,6 @@ class AlignmentFault : public AlphaFault bool isAlignmentFault() {return true;} }; -#if !FULL_SYSTEM -class PageTableFault : public AlphaFault -{ - private: - Addr vaddr; - static FaultName _name; - static FaultVect _vect; - static FaultStat _count; - public: - PageTableFault(Addr va) - : vaddr(va) {} - FaultName name() {return _name;} - FaultVect vect() {return _vect;} - FaultStat & countStat() {return _count;} - void invoke(ThreadContext * tc); -}; - -static inline Fault genPageTableFault(Addr va) -{ - return new PageTableFault(va); -} -#endif - static inline Fault genMachineCheckFault() { return new MachineCheckFault; diff --git a/src/arch/mips/faults.cc b/src/arch/mips/faults.cc index 2a8ab1df5..c9e6aa75b 100644 --- a/src/arch/mips/faults.cc +++ b/src/arch/mips/faults.cc @@ -58,12 +58,6 @@ FaultName ArithmeticFault::_name = "arith"; FaultVect ArithmeticFault::_vect = 0x0501; FaultStat ArithmeticFault::_count; -#if !FULL_SYSTEM -FaultName PageTableFault::_name = "page_table_fault"; -FaultVect PageTableFault::_vect = 0x0000; -FaultStat PageTableFault::_count; -#endif - FaultName InterruptFault::_name = "interrupt"; FaultVect InterruptFault::_vect = 0x0101; FaultStat InterruptFault::_count; @@ -112,25 +106,5 @@ FaultName IntegerOverflowFault::_name = "intover"; FaultVect IntegerOverflowFault::_vect = 0x0501; FaultStat IntegerOverflowFault::_count; -void PageTableFault::invoke(ThreadContext *tc) -{ - Process *p = tc->getProcessPtr(); - - // address is higher than the stack region or in the current stack region - if (vaddr > p->stack_base || vaddr > p->stack_min) - FaultBase::invoke(tc); - - // We've accessed the next page - if (vaddr > p->stack_min - PageBytes) { - p->stack_min -= PageBytes; - if (p->stack_base - p->stack_min > 8*1024*1024) - fatal("Over max stack size for one thread\n"); - p->pTable->allocate(p->stack_min, PageBytes); - warn("Increasing stack size by one page."); - } else { - FaultBase::invoke(tc); - } -} - } // namespace MipsISA diff --git a/src/arch/mips/faults.hh b/src/arch/mips/faults.hh index 9d2c5df32..86c742413 100644 --- a/src/arch/mips/faults.hh +++ b/src/arch/mips/faults.hh @@ -80,30 +80,6 @@ class AlignmentFault : public MipsFault bool isAlignmentFault() {return true;} }; -#if !FULL_SYSTEM -class PageTableFault : public MipsFault -{ - private: - Addr vaddr; - static FaultName _name; - static FaultVect _vect; - static FaultStat _count; - public: - PageTableFault(Addr va) - : vaddr(va) {} - FaultName name() {return _name;} - FaultVect vect() {return _vect;} - FaultStat & countStat() {return _count;} - void invoke(ThreadContext * tc); -}; - -static inline Fault genPageTableFault(Addr va) -{ - return new PageTableFault(va); -} -#endif - - static inline Fault genMachineCheckFault() { return new MachineCheckFault; diff --git a/src/arch/sparc/faults.cc b/src/arch/sparc/faults.cc index f6cf97872..88c086090 100644 --- a/src/arch/sparc/faults.cc +++ b/src/arch/sparc/faults.cc @@ -267,12 +267,6 @@ template<> SparcFaultBase::FaultVals SparcFault::vals = {"trap_instruction", 0x100, 1602, {P, P, H}}; -#if !FULL_SYSTEM -template<> SparcFaultBase::FaultVals - SparcFault::vals = - {"page_table_fault", 0x0000, 0, {SH, SH, SH}}; -#endif - /** * This causes the thread context to enter RED state. This causes the side * effects which go with entering RED state because of a trap. @@ -680,28 +674,6 @@ void TrapInstruction::invoke(ThreadContext *tc) tc->setNextNPC(tc->readNextNPC() + sizeof(MachInst)); } -void PageTableFault::invoke(ThreadContext *tc) -{ - Process *p = tc->getProcessPtr(); - - // We've accessed the next page of the stack, so extend the stack - // to cover it. - if(vaddr < p->stack_min && vaddr >= p->stack_min - PageBytes) - { - p->stack_min -= PageBytes; - if(p->stack_base - p->stack_min > 8*1024*1024) - fatal("Over max stack size for one thread\n"); - p->pTable->allocate(p->stack_min, PageBytes); - warn("Increasing stack size by one page."); - } - // Otherwise, we have an unexpected page fault. Report that fact, - // and what address was accessed to cause the fault. - else - { - panic("Page table fault when accessing virtual address %#x\n", vaddr); - } -} - #endif } // namespace SparcISA diff --git a/src/arch/sparc/faults.hh b/src/arch/sparc/faults.hh index 0ba897e67..10ef89279 100644 --- a/src/arch/sparc/faults.hh +++ b/src/arch/sparc/faults.hh @@ -256,22 +256,6 @@ class TrapInstruction : public EnumeratedFault #endif }; -#if !FULL_SYSTEM -class PageTableFault : public SparcFault -{ - private: - Addr vaddr; - public: - PageTableFault(Addr va) : vaddr(va) {} - void invoke(ThreadContext * tc); -}; - -static inline Fault genPageTableFault(Addr va) -{ - return new PageTableFault(va); -} -#endif - static inline Fault genMachineCheckFault() { return new InternalProcessorError; diff --git a/src/mem/page_table.cc b/src/mem/page_table.cc index fe8094b88..96bc23793 100644 --- a/src/mem/page_table.cc +++ b/src/mem/page_table.cc @@ -157,7 +157,7 @@ PageTable::translate(RequestPtr &req) assert(pageAlign(req->getVaddr() + req->getSize() - 1) == pageAlign(req->getVaddr())); if (!translate(req->getVaddr(), paddr)) { - return genPageTableFault(req->getVaddr()); + return Fault(new PageTableFault(req->getVaddr())); } req->setPaddr(paddr); return page_check(req->getPaddr(), req->getSize()); diff --git a/src/sim/faults.cc b/src/sim/faults.cc index cea35482a..7aa3ec4a1 100644 --- a/src/sim/faults.cc +++ b/src/sim/faults.cc @@ -29,10 +29,13 @@ * Gabe Black */ +#include "arch/isa_traits.hh" #include "base/misc.hh" -#include "sim/faults.hh" #include "cpu/thread_context.hh" #include "cpu/base.hh" +#include "sim/faults.hh" +#include "sim/process.hh" +#include "mem/page_table.hh" #if !FULL_SYSTEM void FaultBase::invoke(ThreadContext * tc) @@ -53,3 +56,25 @@ void UnimpFault::invoke(ThreadContext * tc) { panic("Unimpfault: %s\n", panicStr.c_str()); } + +void PageTableFault::invoke(ThreadContext *tc) +{ + Process *p = tc->getProcessPtr(); + + // We've accessed the next page of the stack, so extend the stack + // to cover it. + if(vaddr < p->stack_min && vaddr >= p->stack_min - TheISA::PageBytes) + { + p->stack_min -= TheISA::PageBytes; + if(p->stack_base - p->stack_min > 8*1024*1024) + fatal("Over max stack size for one thread\n"); + p->pTable->allocate(p->stack_min, TheISA::PageBytes); + warn("Increasing stack size by one page."); + } + // Otherwise, we have an unexpected page fault. Report that fact, + // and what address was accessed to cause the fault. + else + { + panic("Page table fault when accessing virtual address %#x\n", vaddr); + } +} diff --git a/src/sim/faults.hh b/src/sim/faults.hh index 00264d8fc..2f0b5af62 100644 --- a/src/sim/faults.hh +++ b/src/sim/faults.hh @@ -76,4 +76,16 @@ class UnimpFault : public FaultBase void invoke(ThreadContext * tc); }; +#if !FULL_SYSTEM +class PageTableFault : public FaultBase +{ + private: + Addr vaddr; + public: + FaultName name() {return "M5 page table fault";} + PageTableFault(Addr va) : vaddr(va) {} + void invoke(ThreadContext * tc); +}; +#endif + #endif // __FAULTS_HH__ -- 2.30.2