From: Nathan Binkert <nate@binkert.org>
Date: Mon, 10 Nov 2008 19:51:18 +0000 (-0800)
Subject: pseudo inst: Add rpns (read processor nanoseconds) instruction.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=eb5d9ba72b0309e7f98c382e3a80ce0601dbe084;p=gem5.git

pseudo inst: Add rpns (read processor nanoseconds) instruction.
This instruction basically returns the number of nanoseconds that the CPU
has been running.
---

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);
diff --git a/util/m5/m5op.h b/util/m5/m5op.h
index f4e6bb0f1..bab2e2b9e 100644
--- a/util/m5/m5op.h
+++ b/util/m5/m5op.h
@@ -39,6 +39,7 @@ void quiesce(void);
 void quiesceNs(uint64_t ns);
 void quiesceCycle(uint64_t cycles);
 uint64_t quiesceTime(void);
+uint64_t rpns();
 
 void m5_exit(uint64_t ns_delay);
 uint64_t m5_initparam(void);
diff --git a/util/m5/m5op_alpha.S b/util/m5/m5op_alpha.S
index 7aeffb2c7..77e9afe34 100644
--- a/util/m5/m5op_alpha.S
+++ b/util/m5/m5op_alpha.S
@@ -59,6 +59,7 @@ func:
 #define QUIESCENS(r1) INST(m5_op, r1, 0, quiescens_func)
 #define QUIESCECYC(r1) INST(m5_op, r1, 0, quiescecycle_func)
 #define QUIESCETIME INST(m5_op, 0, 0, quiescetime_func)
+#define RPNS INST(m5_op, 0, 0, rpns_func)
 #define M5EXIT(reg) INST(m5_op, reg, 0, exit_func)
 #define INITPARAM(reg) INST(m5_op, reg, 0, initparam_func)
 #define LOADSYMBOL(reg) INST(m5_op, reg, 0, loadsymbol_func)
@@ -79,6 +80,7 @@ SIMPLE_OP(quiesce, QUIESCE)
 SIMPLE_OP(quiesceNs, QUIESCENS(16))
 SIMPLE_OP(quiesceCycle, QUIESCECYC(16))
 SIMPLE_OP(quiesceTime, QUIESCETIME)
+SIMPLE_OP(rpns, RPNS)
 SIMPLE_OP(m5_exit, M5EXIT(16))
 SIMPLE_OP(m5_initparam, INITPARAM(0))
 SIMPLE_OP(m5_loadsymbol, LOADSYMBOL(0))
diff --git a/util/m5/m5ops.h b/util/m5/m5ops.h
index 58846e1cf..ab9bdd857 100644
--- a/util/m5/m5ops.h
+++ b/util/m5/m5ops.h
@@ -34,6 +34,7 @@
 #define quiescens_func          0x02
 #define quiescecycle_func       0x03
 #define quiescetime_func        0x04
+#define rpns_func               0x07
 #define deprecated1_func        0x10 // obsolete ivlb
 #define deprecated2_func        0x11 // obsolete ivle
 #define deprecated3_func        0x20 // deprecated exit function