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45 #ifndef __ARCH_ARM_PREDECODER_HH__
46 #define __ARCH_ARM_PREDECODER_HH__
48 #include "arch/arm/types.hh"
49 #include "arch/arm/miscregs.hh"
50 #include "base/types.hh"
60 //The extended machine instruction being generated
75 Predecoder(ThreadContext * _tc) :
81 ThreadContext * getTC()
87 setTC(ThreadContext * _tc)
92 void advanceThumbCond();
95 //Use this to give data to the predecoder. This should be used
96 //when there is control flow.
97 void moreBytes(Addr pc, Addr fetchPC, MachInst inst);
99 //Use this to give data to the predecoder. This should be used
100 //when instructions are executed in order.
101 void moreBytes(MachInst machInst)
103 moreBytes(0, 0, machInst);
108 return sizeof(MachInst) > offset;
111 bool extMachInstReady()
113 // The only way an instruction wouldn't be ready is if this is a
114 // 32 bit ARM instruction that's not 32 bit aligned.
120 return (!emi.thumb || emi.bigThumb) ? 4 : 2;
123 //This returns a constant reference to the ExtMachInst to avoid a copy
124 ExtMachInst getExtMachInst()
126 ExtMachInst thisEmi = emi;
133 #endif // __ARCH_ARM_PREDECODER_HH__