From: Ali Saidi <Ali.Saidi@ARM.com>
Date: Thu, 1 Dec 2011 08:15:22 +0000 (-0800)
Subject: ARM: Add IsSerializeAfter and IsNonSpeculative flag to the syscall instruction .
X-Git-Tag: stable_2012_02_02~14
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5901c5223f2e9280aa6f2307288b6a5dc554df83;p=gem5.git

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

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
---

diff --git a/src/arch/arm/isa/insts/misc.isa b/src/arch/arm/isa/insts/misc.isa
index 2cf54fcdb..870f037d0 100644
--- a/src/arch/arm/isa/insts/misc.isa
+++ b/src/arch/arm/isa/insts/misc.isa
@@ -49,7 +49,8 @@ let {{
 
     svcIop = InstObjParams("svc", "Svc", "PredOp",
                            { "code": svcCode,
-                             "predicate_test": predicateTest }, ["IsSyscall"])
+                             "predicate_test": predicateTest },
+                           ["IsSyscall", "IsNonSpeculative", "IsSerializeAfter"])
     header_output = BasicDeclare.subst(svcIop)
     decoder_output = BasicConstructor.subst(svcIop)
     exec_output = PredOpExecute.subst(svcIop)