Hi Arnd,
On 12 January 2017 at 19:04, kbuild test robot <[email protected]> wrote:
> tree:
> https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
> master
> head: 1abee99eafab67fb1c98f9ecfc43cd5735384a86
> commit: 81edb42629758bacdf813dd5e4542ae26e3ad73a [43/44] crypto: arm/aes -
> replace scalar AES cipher
> config: arm-multi_v7_defconfig (attached as .config)
> compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
> reproduce:
> wget
> https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
> -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> git checkout 81edb42629758bacdf813dd5e4542ae26e3ad73a
> # save the attached .config to linux build tree
> make.cross ARCH=arm
>
> All errors (new ones prefixed by >>):
>
> arch/arm/crypto/aes-cipher-core.S: Assembler messages:
>>> arch/arm/crypto/aes-cipher-core.S:21: Error: selected processor does not
>>> support `tt .req ip' in ARM mode
Did you ever see this error? This is very odd: .req simply declares an
alias for a register name, and this works fine locally
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected --
>>> `movw tt,#:lower16:crypto_ft_tab'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected --
>>> `movt tt,#:upper16:crypto_ft_tab'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r8,[tt,r8,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t0,[tt,t0,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r9,[tt,r9,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t1,[tt,t1,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t2,[tt,t2,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r10,[tt,r10,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t0,[tt,t0,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r11,[tt,r11,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r10,[tt,r10,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t0,[tt,t0,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r11,[tt,r11,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t1,[tt,t1,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t2,[tt,t2,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r5,[tt,r5,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> t0,[tt,t0,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r6,[tt,r6,lsl#2]'
>>> arch/arm/crypto/aes-cipher-core.S:174: Error: ARM register expected -- `ldr
>>> r4,[tt,r4,lsl#2]'
>
> vim +21 arch/arm/crypto/aes-cipher-core.S
>
> 15 .align 5
> 16
> 17 rk .req r0
> 18 rounds .req r1
> 19 in .req r2
> 20 out .req r3
> > 21 tt .req ip
> 22
> 23 t0 .req lr
> 24 t1 .req r2
> 25 t2 .req r3
> 26
> 27 .macro __select, out, in, idx
> 28 .if __LINUX_ARM_ARCH__ < 7
> 29 and \out, \in, #0xff << (8 * \idx)
> 30 .else
> 31 ubfx \out, \in, #(8 * \idx), #8
> 32 .endif
> 33 .endm
> 34
> 35 .macro __load, out, in, idx
> 36 .if __LINUX_ARM_ARCH__ < 7 && \idx > 0
> 37 ldr \out, [tt, \in, lsr #(8 * \idx) - 2]
> 38 .else
> 39 ldr \out, [tt, \in, lsl #2]
> 40 .endif
> 41 .endm
> 42
> 43 .macro __hround, out0, out1, in0, in1, in2, in3, t3,
> t4, enc
> 44 __select \out0, \in0, 0
> 45 __select t0, \in1, 1
> 46 __load \out0, \out0, 0
> 47 __load t0, t0, 1
> 48
> 49 .if \enc
> 50 __select \out1, \in1, 0
> 51 __select t1, \in2, 1
> 52 .else
> 53 __select \out1, \in3, 0
> 54 __select t1, \in0, 1
> 55 .endif
> 56 __load \out1, \out1, 0
> 57 __select t2, \in2, 2
> 58 __load t1, t1, 1
> 59 __load t2, t2, 2
> 60
> 61 eor \out0, \out0, t0, ror #24
> 62
> 63 __select t0, \in3, 3
> 64 .if \enc
> 65 __select \t3, \in3, 2
> 66 __select \t4, \in0, 3
> 67 .else
> 68 __select \t3, \in1, 2
> 69 __select \t4, \in2, 3
> 70 .endif
> 71 __load \t3, \t3, 2
> 72 __load t0, t0, 3
> 73 __load \t4, \t4, 3
> 74
> 75 eor \out1, \out1, t1, ror #24
> 76 eor \out0, \out0, t2, ror #16
> 77 ldm rk!, {t1, t2}
> 78 eor \out1, \out1, \t3, ror #16
> 79 eor \out0, \out0, t0, ror #8
> 80 eor \out1, \out1, \t4, ror #8
> 81 eor \out0, \out0, t1
> 82 eor \out1, \out1, t2
> 83 .endm
> 84
> 85 .macro fround, out0, out1, out2, out3, in0, in1,
> in2, in3
> 86 __hround \out0, \out1, \in0, \in1, \in2, \in3, \out2,
> \out3, 1
> 87 __hround \out2, \out3, \in2, \in3, \in0, \in1, \in1,
> \in2, 1
> 88 .endm
> 89
> 90 .macro iround, out0, out1, out2, out3, in0, in1,
> in2, in3
> 91 __hround \out0, \out1, \in0, \in3, \in2, \in1, \out2,
> \out3, 0
> 92 __hround \out2, \out3, \in2, \in1, \in0, \in3, \in1,
> \in0, 0
> 93 .endm
> 94
> 95 .macro __rev, out, in
> 96 .if __LINUX_ARM_ARCH__ < 6
> 97 lsl t0, \in, #24
> 98 and t1, \in, #0xff00
> 99 and t2, \in, #0xff0000
> 100 orr \out, t0, \in, lsr #24
> 101 orr \out, \out, t1, lsl #8
> 102 orr \out, \out, t2, lsr #8
> 103 .else
> 104 rev \out, \in
> 105 .endif
> 106 .endm
> 107
> 108 .macro __adrl, out, sym, c
> 109 .if __LINUX_ARM_ARCH__ < 7
> 110 ldr\c \out, =\sym
> 111 .else
> 112 movw\c \out, #:lower16:\sym
> 113 movt\c \out, #:upper16:\sym
> 114 .endif
> 115 .endm
> 116
> 117 .macro do_crypt, round, ttab, ltab
> 118 push {r3-r11, lr}
> 119
> 120 ldr r4, [in]
> 121 ldr r5, [in, #4]
> 122 ldr r6, [in, #8]
> 123 ldr r7, [in, #12]
> 124
> 125 ldm rk!, {r8-r11}
> 126
> 127 #ifdef CONFIG_CPU_BIG_ENDIAN
> 128 __rev r4, r4
> 129 __rev r5, r5
> 130 __rev r6, r6
> 131 __rev r7, r7
> 132 #endif
> 133
> 134 eor r4, r4, r8
> 135 eor r5, r5, r9
> 136 eor r6, r6, r10
> 137 eor r7, r7, r11
> 138
> 139 __adrl tt, \ttab
> 140
> 141 tst rounds, #2
> 142 bne 1f
> 143
> 144 0: \round r8, r9, r10, r11, r4, r5, r6, r7
> 145 \round r4, r5, r6, r7, r8, r9, r10, r11
> 146
> 147 1: subs rounds, rounds, #4
> 148 \round r8, r9, r10, r11, r4, r5, r6, r7
> 149 __adrl tt, \ltab, ls
> 150 \round r4, r5, r6, r7, r8, r9, r10, r11
> 151 bhi 0b
> 152
> 153 #ifdef CONFIG_CPU_BIG_ENDIAN
> 154 __rev r4, r4
> 155 __rev r5, r5
> 156 __rev r6, r6
> 157 __rev r7, r7
> 158 #endif
> 159
> 160 ldr out, [sp]
> 161
> 162 str r4, [out]
> 163 str r5, [out, #4]
> 164 str r6, [out, #8]
> 165 str r7, [out, #12]
> 166
> 167 pop {r3-r11, pc}
> 168
> 169 .align 3
> 170 .ltorg
> 171 .endm
> 172
> 173 ENTRY(__aes_arm_encrypt)
> > 174 do_crypt fround, crypto_ft_tab, crypto_fl_tab
> 175 ENDPROC(__aes_arm_encrypt)
> 176
> 177 ENTRY(__aes_arm_decrypt)
> > 178 do_crypt iround, crypto_it_tab, crypto_il_tab
> 179 ENDPROC(__aes_arm_decrypt)
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
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