commit 1a551746a00501331ccde9eeb19a8fb5ca8982a2
author Giacomo Travaglini <giacomo.travaglini@arm.com> Mon Oct 23 10:54:16 2017 +0100
committer Andreas Sandberg <andreas.sandberg@arm.com> Wed Nov 15 14:16:57 2017 +0000
tree a0e43bd5bca9f2bacb6ed18652f312bc5bcddd3c
parent ccdbc394e2f4adcb8a3b89b8df7ce403b9fbd937

arch-arm: Dsb instruction shouldn't flush the pipeline

DSB Instruction shouldn't flush the pipeline, hence the IsSquashAfter
attribute will be removed for either the 32 and 64 bit version.

Change-Id: I98b2b8bc78aa28445ed1a9b5f34645f8d71616ad
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/5363
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

src/arch/arm/isa/insts/misc.isa

diff --git a/src/arch/arm/isa/insts/misc.isa b/src/arch/arm/isa/insts/misc.isa
index b42c9f9..80ad6cd 100644
--- a/src/arch/arm/isa/insts/misc.isa
+++ b/src/arch/arm/isa/insts/misc.isa
@@ -1090,8 +1090,7 @@
     dsbIop = InstObjParams("dsb", "Dsb", "ImmOp",
                              {"code": dsbCode,
                                "predicate_test": predicateTest},
-                              ['IsMemBarrier', 'IsSerializeAfter',
-                               'IsSquashAfter'])
+                              ['IsMemBarrier', 'IsSerializeAfter'])
     header_output += ImmOpDeclare.subst(dsbIop)
     decoder_output += ImmOpConstructor.subst(dsbIop)
     exec_output += PredOpExecute.subst(dsbIop)

src/arch/arm/isa/insts/misc64.isa

diff --git a/src/arch/arm/isa/insts/misc64.isa b/src/arch/arm/isa/insts/misc64.isa
index ac9f0a9..58f08f5 100644
--- a/src/arch/arm/isa/insts/misc64.isa
+++ b/src/arch/arm/isa/insts/misc64.isa
@@ -146,8 +146,7 @@
     exec_output += BasicExecute.subst(isbIop)
 
     dsbIop = InstObjParams("dsb", "Dsb64", "ArmStaticInst", "",
-                           ['IsMemBarrier', 'IsSerializeAfter',
-                            'IsSquashAfter'])
+                           ['IsMemBarrier', 'IsSerializeAfter'])
     header_output += BasicDeclare.subst(dsbIop)
     decoder_output += BasicConstructor64.subst(dsbIop)
     exec_output += BasicExecute.subst(dsbIop)