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author | Gabe Black <gblack@eecs.umich.edu> | 2010-11-15 19:37:03 -0800 |
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committer | Gabe Black <gblack@eecs.umich.edu> | 2010-11-15 19:37:03 -0800 |
commit | 8b9b85e92cde81ef9eb0cf6595be59c96fd13f97 (patch) | |
tree | cf5a39118cebc1595f27072b26dd3dd6b3a2e140 /src/arch/alpha/predecoder.hh | |
parent | 776c07591797ccd103619de111ec27df04f96bb3 (diff) | |
download | gem5-8b9b85e92cde81ef9eb0cf6595be59c96fd13f97.tar.xz |
O3: Make O3 support variably lengthed instructions.
Diffstat (limited to 'src/arch/alpha/predecoder.hh')
-rw-r--r-- | src/arch/alpha/predecoder.hh | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/arch/alpha/predecoder.hh b/src/arch/alpha/predecoder.hh index f9a716b7f..a8788051f 100644 --- a/src/arch/alpha/predecoder.hh +++ b/src/arch/alpha/predecoder.hh @@ -47,10 +47,11 @@ class Predecoder // The extended machine instruction being generated ExtMachInst ext_inst; + bool emiIsReady; public: Predecoder(ThreadContext * _tc) - : tc(_tc) + : tc(_tc), emiIsReady(false) {} ThreadContext * @@ -71,7 +72,9 @@ class Predecoder void reset() - { } + { + emiIsReady = false; + } // Use this to give data to the predecoder. This should be used // when there is control flow. @@ -79,6 +82,7 @@ class Predecoder moreBytes(const PCState &pc, Addr fetchPC, MachInst inst) { ext_inst = inst; + emiIsReady = true; #if FULL_SYSTEM ext_inst |= (static_cast<ExtMachInst>(pc.pc() & 0x1) << 32); #endif @@ -93,13 +97,14 @@ class Predecoder bool extMachInstReady() { - return true; + return emiIsReady; } // This returns a constant reference to the ExtMachInst to avoid a copy const ExtMachInst & getExtMachInst(PCState &pc) { + emiIsReady = false; return ext_inst; } }; |