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Message-Id: <20170315.145512.1542025976162251828.davem@davemloft.net>
Date: Wed, 15 Mar 2017 14:55:12 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: illusionist.neo@...il.com
Cc: keescook@...omium.org, daniel@...earbox.net, mgherzan@...il.com,
netdev@...r.kernel.org, kernel-hardening@...ts.openwall.com,
linux-arm-kernel@...ts.infradead.org
Subject: Re: arch: arm: bpf: Converting cBPF to eBPF for arm 32 bit
From: Shubham Bansal <illusionist.neo@...il.com>
Date: Wed, 15 Mar 2017 17:43:44 +0530
>> You can't truncate, but you'll have to build 64-bit ops using 32-bit registers.
>
> A small example would help a lot.
You can simply perform 64-bit operations in C code and see what gcc
outputs for that code on this 32-bit target.
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