linux-kernel - arch/arm/crypto/aes-ce-core.S:467: Error: selected processor does not support `movw ip,:lower16:.Lcts_permute

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Date:   Mon, 30 Sep 2019 18:20:50 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: arch/arm/crypto/aes-ce-core.S:467: Error: selected processor does
 not support `movw ip,:lower16:.Lcts_permute_table' in ARM mode

Hi Ard,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   97f9a3c4eee55b0178b518ae7114a6a53372913d
commit: c61b1607ed4fbbf2ba7c86f29768cff44a1a88f8 crypto: arm/aes-ce - implement ciphertext stealing for XTS
date:   3 weeks ago
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout c61b1607ed4fbbf2ba7c86f29768cff44a1a88f8
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   arch/arm/crypto/aes-ce-core.S: Assembler messages:
>> arch/arm/crypto/aes-ce-core.S:467: Error: selected processor does not support `movw ip,:lower16:.Lcts_permute_table' in ARM mode
>> arch/arm/crypto/aes-ce-core.S:468: Error: selected processor does not support `movt ip,:upper16:.Lcts_permute_table' in ARM mode
   arch/arm/crypto/aes-ce-core.S:553: Error: selected processor does not support `movw ip,:lower16:.Lcts_permute_table' in ARM mode
   arch/arm/crypto/aes-ce-core.S:554: Error: selected processor does not support `movt ip,:upper16:.Lcts_permute_table' in ARM mode

vim +467 arch/arm/crypto/aes-ce-core.S

   403	
   404	ENTRY(ce_aes_xts_encrypt)
   405		push		{r4-r6, lr}
   406	
   407		bl		ce_aes_xts_init		@ run shared prologue
   408		prepare_key	r2, r3
   409		vmov		q4, q0
   410	
   411		teq		r6, #0			@ start of a block?
   412		bne		.Lxtsenc4x
   413	
   414	.Lxtsencloop4x:
   415		next_tweak	q4, q4, q15, q10
   416	.Lxtsenc4x:
   417		subs		r4, r4, #64
   418		bmi		.Lxtsenc1x
   419		vld1.8		{q0-q1}, [r1]!		@ get 4 pt blocks
   420		vld1.8		{q2-q3}, [r1]!
   421		next_tweak	q5, q4, q15, q10
   422		veor		q0, q0, q4
   423		next_tweak	q6, q5, q15, q10
   424		veor		q1, q1, q5
   425		next_tweak	q7, q6, q15, q10
   426		veor		q2, q2, q6
   427		veor		q3, q3, q7
   428		bl		aes_encrypt_4x
   429		veor		q0, q0, q4
   430		veor		q1, q1, q5
   431		veor		q2, q2, q6
   432		veor		q3, q3, q7
   433		vst1.8		{q0-q1}, [r0]!		@ write 4 ct blocks
   434		vst1.8		{q2-q3}, [r0]!
   435		vmov		q4, q7
   436		teq		r4, #0
   437		beq		.Lxtsencret
   438		b		.Lxtsencloop4x
   439	.Lxtsenc1x:
   440		adds		r4, r4, #64
   441		beq		.Lxtsencout
   442		subs		r4, r4, #16
   443		bmi		.LxtsencctsNx
   444	.Lxtsencloop:
   445		vld1.8		{q0}, [r1]!
   446	.Lxtsencctsout:
   447		veor		q0, q0, q4
   448		bl		aes_encrypt
   449		veor		q0, q0, q4
   450		teq		r4, #0
   451		beq		.Lxtsencout
   452		subs		r4, r4, #16
   453		next_tweak	q4, q4, q15, q6
   454		bmi		.Lxtsenccts
   455		vst1.8		{q0}, [r0]!
   456		b		.Lxtsencloop
   457	.Lxtsencout:
   458		vst1.8		{q0}, [r0]
   459	.Lxtsencret:
   460		vst1.8		{q4}, [r5]
   461		pop		{r4-r6, pc}
   462	
   463	.LxtsencctsNx:
   464		vmov		q0, q3
   465		sub		r0, r0, #16
   466	.Lxtsenccts:
 > 467		movw		ip, :lower16:.Lcts_permute_table
 > 468		movt		ip, :upper16:.Lcts_permute_table
   469	
   470		add		r1, r1, r4		@ rewind input pointer
   471		add		r4, r4, #16		@ # bytes in final block
   472		add		lr, ip, #32
   473		add		ip, ip, r4
   474		sub		lr, lr, r4
   475		add		r4, r0, r4		@ output address of final block
   476	
   477		vld1.8		{q1}, [r1]		@ load final partial block
   478		vld1.8		{q2}, [ip]
   479		vld1.8		{q3}, [lr]
   480	
   481		vtbl.8		d4, {d0-d1}, d4
   482		vtbl.8		d5, {d0-d1}, d5
   483		vtbx.8		d0, {d2-d3}, d6
   484		vtbx.8		d1, {d2-d3}, d7
   485	
   486		vst1.8		{q2}, [r4]		@ overlapping stores
   487		mov		r4, #0
   488		b		.Lxtsencctsout
   489	ENDPROC(ce_aes_xts_encrypt)
   490	
   491	

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