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40 #ifndef __ARCH_X86_TLB_HH__
41 #define __ARCH_X86_TLB_HH__
47 #include "arch/generic/tlb.hh"
48 #include "arch/x86/regs/segment.hh"
49 #include "arch/x86/pagetable.hh"
50 #include "base/trie.hh"
51 #include "mem/mem_object.hh"
52 #include "mem/request.hh"
53 #include "params/X86TLB.hh"
54 #include "sim/sim_object.hh"
63 class TLB : public BaseTLB
68 typedef std::list<TlbEntry *> EntryList;
70 uint32_t configAddress;
74 typedef X86TLBParams Params;
77 void takeOverFrom(BaseTLB *otlb) override {}
79 TlbEntry *lookup(Addr va, bool update_lru = true);
81 void setConfigAddress(uint32_t addr);
85 EntryList::iterator lookupIt(Addr va, bool update_lru = true);
92 void flushAll() override;
94 void flushNonGlobal();
96 void demapPage(Addr va, uint64_t asn) override;
101 std::vector<TlbEntry> tlb;
108 Fault translateInt(RequestPtr req, ThreadContext *tc);
110 Fault translate(RequestPtr req, ThreadContext *tc,
111 Translation *translation, Mode mode,
112 bool &delayedResponse, bool timing);
124 Fault translateAtomic(RequestPtr req, ThreadContext *tc, Mode mode);
125 void translateTiming(RequestPtr req, ThreadContext *tc,
126 Translation *translation, Mode mode);
127 /** Stub function for compilation support of CheckerCPU. x86 ISA does
128 * not support Checker model at the moment
130 Fault translateFunctional(RequestPtr req, ThreadContext *tc, Mode mode);
133 * Do post-translation physical address finalization.
135 * Some addresses, for example requests going to the APIC,
136 * need post-translation updates. Such physical addresses are
137 * remapped into a "magic" part of the physical address space
140 * @param req Request to updated in-place.
141 * @param tc Thread context that created the request.
142 * @param mode Request type (read/write/execute).
143 * @return A fault on failure, NoFault otherwise.
145 Fault finalizePhysical(RequestPtr req, ThreadContext *tc,
148 TlbEntry * insert(Addr vpn, TlbEntry &entry);
151 void serialize(CheckpointOut &cp) const override;
152 void unserialize(CheckpointIn &cp) override;
155 * Get the table walker master port. This is used for
156 * migrating port connections during a CPU takeOverFrom()
157 * call. For architectures that do not have a table walker,
158 * NULL is returned, hence the use of a pointer rather than a
159 * reference. For X86 this method will always return a valid
162 * @return A pointer to the walker master port
164 BaseMasterPort *getMasterPort() override;
168 #endif // __ARCH_X86_TLB_HH__