arch-arm: Add support for Tarmac trace generation

This patch introduces the TarmacTracer: an instruction tracer which
allows to dump a gem5 execution trace in Tarmac format [1]. The new
tracer is supporting either Tarmac and TarmacV8 format specifications.
Not every traceable information has been implemented:

Implemented Trace Type:
    Instruction Trace
    Register Trace
    Processor Memory Access Trace

Unimplemented Trace Type:
    Program Flow Trace
    Event Trace
    Memory Bus Trace

[1]: https://developer.arm.com/docs/dui0845/f/tarmac-trace-file-format

Change-Id: I8799d8e5852e868673f728971db3fe8c63961f5e
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/9382
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/arch/arm/tracers/TarmacTrace.py b/src/arch/arm/tracers/TarmacTrace.py
index c2bcbb3c2..8955fadd6 100644
--- a/src/arch/arm/tracers/TarmacTrace.py
+++ b/src/arch/arm/tracers/TarmacTrace.py
@@ -64,3 +64,14 @@ class TarmacParser(InstTracer):
 
     ignore_mem_addr = Param.AddrRange(AddrRange(0, size=0),
         "Range of unverifiable memory addresses")
+
+class TarmacTracer(InstTracer):
+    type = 'TarmacTracer'
+    cxx_class = 'Trace::TarmacTracer'
+    cxx_header = "arch/arm/tracers/tarmac_tracer.hh"
+
+    start_tick = Param.Tick(0,
+        "tracing starts when the tick time gets this value")
+
+    end_tick = Param.Tick(MaxTick,
+        "tracing ends when the tick time gets this value")