summaryrefslogtreecommitdiff
path: root/src/cpu/minor/exec_context.hh
diff options
context:
space:
mode:
authorMarc Orr <morr@cs.wisc.edu>2014-11-06 05:42:22 -0600
committerMarc Orr <morr@cs.wisc.edu>2014-11-06 05:42:22 -0600
commitbf80734b2ce080cd75f4b57be47e37465e8901f1 (patch)
tree0ba9cbba64cd017e95b5a3f637d58435208ebc3c /src/cpu/minor/exec_context.hh
parent3947f88d0fa35d2134fa3e999e05bb184a01e396 (diff)
downloadgem5-bf80734b2ce080cd75f4b57be47e37465e8901f1.tar.xz
x86 isa: This patch attempts an implementation at mwait.
Mwait works as follows: 1. A cpu monitors an address of interest (monitor instruction) 2. A cpu calls mwait - this loads the cache line into that cpu's cache. 3. The cpu goes to sleep. 4. When another processor requests write permission for the line, it is evicted from the sleeping cpu's cache. This eviction is forwarded to the sleeping cpu, which then wakes up. Committed by: Nilay Vaish <nilay@cs.wisc.edu>
Diffstat (limited to 'src/cpu/minor/exec_context.hh')
-rw-r--r--src/cpu/minor/exec_context.hh9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/cpu/minor/exec_context.hh b/src/cpu/minor/exec_context.hh
index f1143498e..41345d3bd 100644
--- a/src/cpu/minor/exec_context.hh
+++ b/src/cpu/minor/exec_context.hh
@@ -340,6 +340,15 @@ class ExecContext : public ::ExecContext
- TheISA::Misc_Reg_Base, val);
}
}
+
+ public:
+ // monitor/mwait funtions
+ void armMonitor(Addr address) { getCpuPtr()->armMonitor(address); }
+ bool mwait(PacketPtr pkt) { return getCpuPtr()->mwait(pkt); }
+ void mwaitAtomic(ThreadContext *tc)
+ { return getCpuPtr()->mwaitAtomic(tc, thread.dtb); }
+ AddressMonitor *getAddrMonitor()
+ { return getCpuPtr()->getCpuAddrMonitor(); }
};
}