changeset 33adfb8af4c0 in /z/repo/m5
details: http://repo.m5sim.org/m5?cmd=changeset;node=33adfb8af4c0
description:
ARM: Add a memory_barrier function to the "comm page".
This function doesn't actually provide a memory barrier (I don't think
they're
implemented) and instead just returns.
diffstat:
1 file changed, 8 insertions(+)
src/arch/arm/linux/process.cc | 8 ++++++++
diffs (18 lines):
diff -r 17e7ab512377 -r 33adfb8af4c0 src/arch/arm/linux/process.cc
--- a/src/arch/arm/linux/process.cc Tue Jun 09 23:41:03 2009 -0700
+++ b/src/arch/arm/linux/process.cc Tue Jun 09 23:41:35 2009 -0700
@@ -482,6 +482,14 @@
swiNeg1, sizeof(swiNeg1));
}
+ // We don't have barriers, so just return.
+ uint8_t memory_barrier[] =
+ {
+ 0x0e, 0xf0, 0xa0, 0xe1 //usr_ret lr
+ };
+ tc->getMemPort()->writeBlob(commPage + 0x0fa0, memory_barrier,
+ sizeof(memory_barrier));
+
// This -should- be atomic, but I don't think all the support that we'd
// need is implemented. There should also be memory barriers around it.
uint8_t cmpxchg[] =
_______________________________________________
m5-dev mailing list
[email protected]
http://m5sim.org/mailman/listinfo/m5-dev
