[PATCH ARM] Compile on Raspberry Pi

[logcabin at fastmail.net]

I've been building wg on an rpi b3 for quite some time and have never
seen this error. This is with Raspbian Stretch. Maybe compiler related?

On Wed, Aug 29, 2018, at 3:07 AM, Emeka wrote:
> I was able to build on rpi b3 (board 2710 ) some months ago... and I
> didn't encounter this . Can I see the  steps you followed?> 
> Regards, Janus 
> 
> On Wed, Aug 29, 2018, 5:05 AM Francis Booth
> <boothf at boothlabs.me> wrote:>> Attempting to build Wireguard on a Raspberry Pi will result in an
>> assembly error>>     Error: immediate expression requires a # prefix -- `moveq r5,1'>> (the full build error log can be found here:
>> https://pastebin.com/CKTXwGyG)>> Appending # to the values and telling ARM to treat them as literals
>> solves the issue.>> I was able to test this patch out on my own Raspberry Pi 3B+ and can
>> confirm the resulting build is successfully able to build, create the
>> wg0 interface, generate a private key, connect to a peer, and send
>> encrypted messages back and forth.>> justw and revel assisted in providing the fix via the Wireguard irc
>> channel.>>


>> curve25519: arm: Compile on Raspi  diff --git a/src/crypto/curve25519-
>> arm.S b/src/crypto/curve25519-arm.S index cb40c24..f9d50e9 100644 ---
>> a/src/crypto/curve25519-arm.S +++ b/src/crypto/curve25519-arm.S @@
>> -1554,35 +1554,35 @@ ENTRY(curve25519_neon)  movw  r4, 0  movw  r5, 2
>> cmp  r1, #1 - moveq  r5, 1 + moveq  r5, #1  addeq  r2, r3, #336
>> addeq  r4, r3, #48  cmp  r1, #2 - moveq  r5, 1 + moveq  r5, #1  addeq
>> r2, r3, #48  cmp  r1, #3 - moveq  r5, 5 + moveq  r5, #5  addeq  r4,
>> r3, #336  cmp  r1, #4 - moveq  r5, 10 + moveq  r5, #10  cmp  r1, #5 -
>> moveq  r5, 20 + moveq  r5, #20  cmp  r1, #6 - moveq  r5, 10 + moveq
>> r5, #10  addeq  r2, r3, #336  addeq  r4, r3, #336  cmp  r1, #7 -
>> moveq  r5, 50 + moveq  r5, #50  cmp  r1, #8 - moveq  r5, 100 + moveq
>> r5, #100  cmp  r1, #9 - moveq  r5, 50 + moveq  r5, #50  addeq  r2,
>> r3, #336  cmp  r1, #10 - moveq  r5, 5 + moveq  r5, #5  addeq  r2, r3,
>> #48  cmp  r1, #11 - moveq  r5, 0 + moveq  r5, #0  addeq  r2, r3, #96
>> add  r6, r3, #144  add  r7, r3, #288>> _______________________________________________
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