Tuan Ta has uploaded this change for review. (
https://gem5-review.googlesource.com/8187
Change subject: cpu: add a new instruction type 'Atomic'
......................................................................
cpu: add a new instruction type 'Atomic'
This patch adds a new flag named 'Atomic' to support ISA implementations
that use AtomicOpFunctor to handle atomic instructions instead of a
pair of locking load and unlocking store.
Change-Id: I1fbee6e54432396cb49dfc59ad9006b75812d115
---
M src/cpu/StaticInstFlags.py
M src/cpu/base_dyn_inst.hh
M src/cpu/static_inst.hh
3 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/cpu/StaticInstFlags.py b/src/cpu/StaticInstFlags.py
index 55ef456..170ca6d 100644
--- a/src/cpu/StaticInstFlags.py
+++ b/src/cpu/StaticInstFlags.py
@@ -64,6 +64,7 @@
'IsMemRef', # References memory (load, store, or prefetch)
'IsLoad', # Reads from memory (load or prefetch).
'IsStore', # Writes to memory.
+ 'IsAtomic', # Does atomic RMW to memory.
'IsStoreConditional', # Store conditional instruction.
'IsIndexed', # Accesses memory with an indexed address
# computation
diff --git a/src/cpu/base_dyn_inst.hh b/src/cpu/base_dyn_inst.hh
index ae408e3..2eeb773 100644
--- a/src/cpu/base_dyn_inst.hh
+++ b/src/cpu/base_dyn_inst.hh
@@ -505,6 +505,7 @@
bool isMemRef() const { return staticInst->isMemRef(); }
bool isLoad() const { return staticInst->isLoad(); }
bool isStore() const { return staticInst->isStore(); }
+ bool isAtomic() const { return staticInst->isAtomic(); }
bool isStoreConditional() const
{ return staticInst->isStoreConditional(); }
bool isInstPrefetch() const { return staticInst->isInstPrefetch(); }
diff --git a/src/cpu/static_inst.hh b/src/cpu/static_inst.hh
index 79f45d8..846ed15 100644
--- a/src/cpu/static_inst.hh
+++ b/src/cpu/static_inst.hh
@@ -142,6 +142,7 @@
bool isMemRef() const { return flags[IsMemRef]; }
bool isLoad() const { return flags[IsLoad]; }
bool isStore() const { return flags[IsStore]; }
+ bool isAtomic() const { return flags[IsAtomic]; }
bool isStoreConditional() const { return
flags[IsStoreConditional]; }
bool isInstPrefetch() const { return flags[IsInstPrefetch]; }
bool isDataPrefetch() const { return flags[IsDataPrefetch]; }
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I1fbee6e54432396cb49dfc59ad9006b75812d115
Gerrit-Change-Number: 8187
Gerrit-PatchSet: 1
Gerrit-Owner: Tuan Ta <q...@cornell.edu>
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