From eb5d9ba72b0309e7f98c382e3a80ce0601dbe084 Mon Sep 17 00:00:00 2001 From: Nathan Binkert Date: Mon, 10 Nov 2008 11:51:18 -0800 Subject: pseudo inst: Add rpns (read processor nanoseconds) instruction. This instruction basically returns the number of nanoseconds that the CPU has been running. --- src/arch/alpha/isa/decoder.isa | 3 +++ src/sim/pseudo_inst.cc | 6 ++++++ src/sim/pseudo_inst.hh | 1 + 3 files changed, 10 insertions(+) (limited to 'src') diff --git a/src/arch/alpha/isa/decoder.isa b/src/arch/alpha/isa/decoder.isa index 270940df2..115cf7fa7 100644 --- a/src/arch/alpha/isa/decoder.isa +++ b/src/arch/alpha/isa/decoder.isa @@ -806,6 +806,9 @@ decode OPCODE default Unknown::unknown() { 0x04: quiesceTime({{ R0 = PseudoInst::quiesceTime(xc->tcBase()); }}, IsNonSpeculative, IsUnverifiable); + 0x07: rpns({{ + R0 = PseudoInst::rpns(xc->tcBase()); + }}, IsNonSpeculative, IsUnverifiable); 0x10: deprecated_ivlb({{ warn_once("Obsolete M5 ivlb instruction encountered.\n"); }}); diff --git a/src/sim/pseudo_inst.cc b/src/sim/pseudo_inst.cc index 409a6e009..e43279376 100644 --- a/src/sim/pseudo_inst.cc +++ b/src/sim/pseudo_inst.cc @@ -125,6 +125,12 @@ quiesceTime(ThreadContext *tc) return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns; } +uint64_t +rpns(ThreadContext *tc) +{ + return curTick / Clock::Int::ns; +} + void m5exit(ThreadContext *tc, Tick delay) { diff --git a/src/sim/pseudo_inst.hh b/src/sim/pseudo_inst.hh index 40702fced..80f58f80d 100644 --- a/src/sim/pseudo_inst.hh +++ b/src/sim/pseudo_inst.hh @@ -47,6 +47,7 @@ void quiesce(ThreadContext *tc); void quiesceNs(ThreadContext *tc, uint64_t ns); void quiesceCycles(ThreadContext *tc, uint64_t cycles); uint64_t quiesceTime(ThreadContext *tc); +uint64_t rpns(ThreadContext *tc); void m5exit(ThreadContext *tc, Tick delay); void loadsymbol(ThreadContext *xc); void resetstats(ThreadContext *tc, Tick delay, Tick period); -- cgit v1.2.3