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authorGiacomo Travaglini <giacomo.travaglini@arm.com>2019-06-11 10:02:16 +0100
committerGiacomo Travaglini <giacomo.travaglini@arm.com>2019-06-17 08:18:59 +0000
commit8e3164a90b50a18fb2906a18f353189902fce26e (patch)
treeee1620324efea597d9e84277c853dd46a5aaef9b /src/arch/arm/ArmSystem.py
parentd3accb8ba3a65127ca214f19a85ff6ddf50a3c7a (diff)
downloadgem5-8e3164a90b50a18fb2906a18f353189902fce26e.tar.xz
arch-arm: Move the memacc_code before op_wb in fp loads
This is trying to fix the bug that arises when a memory exception is generated during a fp flavoured load (A memory load targeting a SIMD & FP register). With the previous template a fault was not stopping the register value to be modified (wrong) if (fault == NoFault) { fault = readMemAtomic(xc, traceData, EA, Mem, memAccessFlags); %(memacc_code)s; } if (fault == NoFault) { %(op_wb)s; } The patch introduces a Load64FpExecute template which is moving the register write (memacc_code) just before the op_wb Change-Id: I1c89c525dfa7a4ef489abe0872cd7baacdd6ce3c Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/19228 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Tested-by: kokoro <noreply+kokoro@google.com>
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