[gem5-dev] Change in gem5/gem5[master]: systemc: Implement the nonstandard at_negedge and at_posedge.

[Gabe Black (Gerrit)]

Gabe Black has uploaded this change for review. (  
https://gem5-review.googlesource.com/c/public/gem5/+/12467

Change subject: systemc: Implement the nonstandard at_negedge and  
at_posedge.
......................................................................

systemc: Implement the nonstandard at_negedge and at_posedge.

Change-Id: I7ea5cfd309db4b9883df551fd7dcec186e4f38a3
---
M src/systemc/core/sc_module.cc
1 file changed, 22 insertions(+), 8 deletions(-)



diff --git a/src/systemc/core/sc_module.cc b/src/systemc/core/sc_module.cc
index 6be3818..8418a31 100644
--- a/src/systemc/core/sc_module.cc
+++ b/src/systemc/core/sc_module.cc
@@ -35,8 +35,10 @@
 #include "systemc/core/kernel.hh"
 #include "systemc/core/module.hh"
 #include "systemc/core/process_types.hh"
+#include "systemc/ext/channel/sc_signal_in_if.hh"
 #include "systemc/ext/core/sc_module.hh"
 #include "systemc/ext/core/sc_module_name.hh"
+#include "systemc/ext/dt/bit/sc_logic.hh"
 #include "systemc/ext/utils/sc_report_handler.hh"

 namespace sc_gem5
@@ -672,27 +674,39 @@
 }

 void
-at_posedge(const sc_signal_in_if<bool> &)
+at_posedge(const sc_signal_in_if<bool> &s)
 {
-    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    while (s.read())
+        wait();
+    while (!s.read())
+        wait();
 }

 void
-at_posedge(const sc_signal_in_if<sc_dt::sc_logic> &)
+at_posedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
 {
-    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    while (s.read() == sc_dt::Log_1)
+        wait();
+    while (s.read() == sc_dt::Log_0)
+        wait();
 }

 void
-at_negedge(const sc_signal_in_if<bool> &)
+at_negedge(const sc_signal_in_if<bool> &s)
 {
-    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    while (!s.read())
+        wait();
+    while (s.read())
+        wait();
 }

 void
-at_negedge(const sc_signal_in_if<sc_dt::sc_logic> &)
+at_negedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
 {
-    warn("%s not implemented.\n", __PRETTY_FUNCTION__);
+    while (s.read() == sc_dt::Log_0)
+        wait();
+    while (s.read() == sc_dt::Log_1)
+        wait();
 }

 const char *

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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-Change-Id: I7ea5cfd309db4b9883df551fd7dcec186e4f38a3
Gerrit-Change-Number: 12467
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <gabebl...@google.com>
Gerrit-MessageType: newchange
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