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ARM: Add IsSerializeAfter and IsNonSpeculative flag to the syscall instruction .

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Squashes the subsequent instructions in O3 pipe after the service call, so that
they see the effect of the system call when re-executed. This isn't really an issue
with FS mode, but can show up in SE mode.

--HG--
extra : rebase_source : 613a69fe1d9834261e25a8cd340aa6b47578e1fe
This commit is contained in:
Ali Saidi 2011-12-01 00:15:22 -08:00
parent 1444103998
commit 5901c5223f
1 changed files with 2 additions and 1 deletions
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3
src/arch/arm/isa/insts/misc.isa
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@ -49,7 +49,8 @@ let {{
svcIop = InstObjParams("svc", "Svc", "PredOp", svcIop = InstObjParams("svc", "Svc", "PredOp",
{ "code": svcCode, { "code": svcCode,
"predicate_test": predicateTest }, ["IsSyscall"]) "predicate_test": predicateTest },
["IsSyscall", "IsNonSpeculative", "IsSerializeAfter"])
header_output = BasicDeclare.subst(svcIop) header_output = BasicDeclare.subst(svcIop)
decoder_output = BasicConstructor.subst(svcIop) decoder_output = BasicConstructor.subst(svcIop)
exec_output = PredOpExecute.subst(svcIop) exec_output = PredOpExecute.subst(svcIop)