christoph/fail
1
Fork 0
Code Actions Packages Releases Activity

core/sal: interface for backend-specific notion of time

Browse Source 
This adds an interface for a backend-specific notion of time, e.g. CPU
cycles since simulator start, and a concrete implementation for the
Bochs backend.  This is needed to record CPU idle times (e.g., HLT
instruction), and for target backends capable of more timing-accurate
execution.

This change also modifies the tracing plugin to add the time to all
trace events.

Change-Id: I93ac1d54c07f32b0b8f84f333417741d8e9c8288
This commit is contained in:
Horst Schirmeier
2013-03-28 19:22:08 +01:00
parent 6b5728ece1
commit e5fe9dd525
6 changed files with 53 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/core/comm/TracePlugin.proto
View File

@ -18,6 +18,10 @@ message Trace_Event_Extended {
message Trace_Event {
required uint64 ip = 1;
// backend-specific notion of time since last event, counted, e.g., in
// CPU cycles; needed to record CPU idle times (e.g., HLT instruction),
// and for target backends capable of timing-accurate execution
optional int64 time_delta = 6;
optional uint64 memaddr = 2;
optional uint32 width = 3;
enum AccessType {