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31 #include "base/trace.hh"
32 #include "cpu/o3/free_list.hh"
33 #include "debug/FreeList.hh"
35 SimpleFreeList::SimpleFreeList(ThreadID activeThreads
,
36 unsigned _numLogicalIntRegs
,
37 unsigned _numPhysicalIntRegs
,
38 unsigned _numLogicalFloatRegs
,
39 unsigned _numPhysicalFloatRegs
)
40 : numLogicalIntRegs(_numLogicalIntRegs
),
41 numPhysicalIntRegs(_numPhysicalIntRegs
),
42 numLogicalFloatRegs(_numLogicalFloatRegs
),
43 numPhysicalFloatRegs(_numPhysicalFloatRegs
),
44 numPhysicalRegs(numPhysicalIntRegs
+ numPhysicalFloatRegs
)
46 DPRINTF(FreeList
, "Creating new free list object.\n");
48 // Put all of the extra physical registers onto the free list. This
49 // means excluding all of the base logical registers.
50 for (PhysRegIndex i
= numLogicalIntRegs
* activeThreads
;
51 i
< numPhysicalIntRegs
; ++i
)
56 // Put all of the extra physical registers onto the free list. This
57 // means excluding all of the base logical registers. Because the
58 // float registers' indices start where the physical registers end,
59 // some math must be done to determine where the free registers start.
60 PhysRegIndex i
= numPhysicalIntRegs
+ (numLogicalFloatRegs
* activeThreads
);
62 for ( ; i
< numPhysicalRegs
; ++i
)
64 freeFloatRegs
.push(i
);
69 SimpleFreeList::name() const
71 return "cpu.freelist";