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638591cd7b
This patch fixes aes-armv4.S and sha1-armv4-large.S to work
natively in Thumb. This allows ARM/Thumb interworking workarounds
to be removed.
I also take the opportunity to convert some explicit assembler
directives for exported functions to the standard
ENTRY()/ENDPROC().
For the code itself:
* In sha1_block_data_order, use of TEQ with sp is deprecated in
ARMv7 and not supported in Thumb. For the branches back to
.L_00_15 and .L_40_59, the TEQ is converted to a CMP, under the
assumption that clobbering the C flag here will not cause
incorrect behaviour.
For the first branch back to .L_20_39_or_60_79 the C flag is
important, so sp is moved temporarily into another register so
that TEQ can be used for the comparison.
* In the AES code, most forms of register-indexed addressing with
shifts and rotates are not permitted for loads and stores in
Thumb, so the address calculation is done using a separate
instruction for the Thumb case.
The resulting code is unlikely to be optimally scheduled, but it
should not have a large impact given the overall size of the code.
I haven't run any benchmarks.
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Tested-by: David McCullough <ucdevel@gmail.com> (ARM only)
Acked-by: David McCullough <ucdevel@gmail.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1089 lines
28 KiB
ArmAsm
1089 lines
28 KiB
ArmAsm
#define __ARM_ARCH__ __LINUX_ARM_ARCH__
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@ ====================================================================
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@ Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
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@ project. The module is, however, dual licensed under OpenSSL and
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@ CRYPTOGAMS licenses depending on where you obtain it. For further
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@ details see http://www.openssl.org/~appro/cryptogams/.
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@ ====================================================================
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@ AES for ARMv4
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@ January 2007.
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@
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@ Code uses single 1K S-box and is >2 times faster than code generated
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@ by gcc-3.4.1. This is thanks to unique feature of ARMv4 ISA, which
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@ allows to merge logical or arithmetic operation with shift or rotate
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@ in one instruction and emit combined result every cycle. The module
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@ is endian-neutral. The performance is ~42 cycles/byte for 128-bit
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@ key [on single-issue Xscale PXA250 core].
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@ May 2007.
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@
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@ AES_set_[en|de]crypt_key is added.
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@ July 2010.
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@
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@ Rescheduling for dual-issue pipeline resulted in 12% improvement on
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@ Cortex A8 core and ~25 cycles per byte processed with 128-bit key.
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@ February 2011.
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@
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@ Profiler-assisted and platform-specific optimization resulted in 16%
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@ improvement on Cortex A8 core and ~21.5 cycles per byte.
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@ A little glue here to select the correct code below for the ARM CPU
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@ that is being targetted.
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#include <linux/linkage.h>
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.text
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.type AES_Te,%object
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.align 5
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AES_Te:
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.word 0xc66363a5, 0xf87c7c84, 0xee777799, 0xf67b7b8d
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.word 0xfff2f20d, 0xd66b6bbd, 0xde6f6fb1, 0x91c5c554
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.word 0x60303050, 0x02010103, 0xce6767a9, 0x562b2b7d
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.word 0xe7fefe19, 0xb5d7d762, 0x4dababe6, 0xec76769a
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.word 0x8fcaca45, 0x1f82829d, 0x89c9c940, 0xfa7d7d87
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.word 0xeffafa15, 0xb25959eb, 0x8e4747c9, 0xfbf0f00b
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.word 0x41adadec, 0xb3d4d467, 0x5fa2a2fd, 0x45afafea
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.word 0x239c9cbf, 0x53a4a4f7, 0xe4727296, 0x9bc0c05b
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.word 0x75b7b7c2, 0xe1fdfd1c, 0x3d9393ae, 0x4c26266a
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.word 0x6c36365a, 0x7e3f3f41, 0xf5f7f702, 0x83cccc4f
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.word 0x6834345c, 0x51a5a5f4, 0xd1e5e534, 0xf9f1f108
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.word 0xe2717193, 0xabd8d873, 0x62313153, 0x2a15153f
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.word 0x0804040c, 0x95c7c752, 0x46232365, 0x9dc3c35e
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.word 0x30181828, 0x379696a1, 0x0a05050f, 0x2f9a9ab5
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.word 0x0e070709, 0x24121236, 0x1b80809b, 0xdfe2e23d
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.word 0xcdebeb26, 0x4e272769, 0x7fb2b2cd, 0xea75759f
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.word 0x1209091b, 0x1d83839e, 0x582c2c74, 0x341a1a2e
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.word 0x361b1b2d, 0xdc6e6eb2, 0xb45a5aee, 0x5ba0a0fb
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.word 0xa45252f6, 0x763b3b4d, 0xb7d6d661, 0x7db3b3ce
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.word 0x5229297b, 0xdde3e33e, 0x5e2f2f71, 0x13848497
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.word 0xa65353f5, 0xb9d1d168, 0x00000000, 0xc1eded2c
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.word 0x40202060, 0xe3fcfc1f, 0x79b1b1c8, 0xb65b5bed
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.word 0xd46a6abe, 0x8dcbcb46, 0x67bebed9, 0x7239394b
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.word 0x944a4ade, 0x984c4cd4, 0xb05858e8, 0x85cfcf4a
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.word 0xbbd0d06b, 0xc5efef2a, 0x4faaaae5, 0xedfbfb16
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.word 0x864343c5, 0x9a4d4dd7, 0x66333355, 0x11858594
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.word 0x8a4545cf, 0xe9f9f910, 0x04020206, 0xfe7f7f81
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.word 0xa05050f0, 0x783c3c44, 0x259f9fba, 0x4ba8a8e3
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.word 0xa25151f3, 0x5da3a3fe, 0x804040c0, 0x058f8f8a
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.word 0x3f9292ad, 0x219d9dbc, 0x70383848, 0xf1f5f504
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.word 0x63bcbcdf, 0x77b6b6c1, 0xafdada75, 0x42212163
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.word 0x20101030, 0xe5ffff1a, 0xfdf3f30e, 0xbfd2d26d
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.word 0x81cdcd4c, 0x180c0c14, 0x26131335, 0xc3ecec2f
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.word 0xbe5f5fe1, 0x359797a2, 0x884444cc, 0x2e171739
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.word 0x93c4c457, 0x55a7a7f2, 0xfc7e7e82, 0x7a3d3d47
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.word 0xc86464ac, 0xba5d5de7, 0x3219192b, 0xe6737395
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.word 0xc06060a0, 0x19818198, 0x9e4f4fd1, 0xa3dcdc7f
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.word 0x44222266, 0x542a2a7e, 0x3b9090ab, 0x0b888883
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.word 0x8c4646ca, 0xc7eeee29, 0x6bb8b8d3, 0x2814143c
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.word 0xa7dede79, 0xbc5e5ee2, 0x160b0b1d, 0xaddbdb76
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.word 0xdbe0e03b, 0x64323256, 0x743a3a4e, 0x140a0a1e
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.word 0x924949db, 0x0c06060a, 0x4824246c, 0xb85c5ce4
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.word 0x9fc2c25d, 0xbdd3d36e, 0x43acacef, 0xc46262a6
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.word 0x399191a8, 0x319595a4, 0xd3e4e437, 0xf279798b
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.word 0xd5e7e732, 0x8bc8c843, 0x6e373759, 0xda6d6db7
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.word 0x018d8d8c, 0xb1d5d564, 0x9c4e4ed2, 0x49a9a9e0
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.word 0xd86c6cb4, 0xac5656fa, 0xf3f4f407, 0xcfeaea25
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.word 0xca6565af, 0xf47a7a8e, 0x47aeaee9, 0x10080818
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.word 0x6fbabad5, 0xf0787888, 0x4a25256f, 0x5c2e2e72
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.word 0x381c1c24, 0x57a6a6f1, 0x73b4b4c7, 0x97c6c651
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.word 0xcbe8e823, 0xa1dddd7c, 0xe874749c, 0x3e1f1f21
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.word 0x964b4bdd, 0x61bdbddc, 0x0d8b8b86, 0x0f8a8a85
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.word 0xe0707090, 0x7c3e3e42, 0x71b5b5c4, 0xcc6666aa
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.word 0x904848d8, 0x06030305, 0xf7f6f601, 0x1c0e0e12
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.word 0xc26161a3, 0x6a35355f, 0xae5757f9, 0x69b9b9d0
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.word 0x17868691, 0x99c1c158, 0x3a1d1d27, 0x279e9eb9
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.word 0xd9e1e138, 0xebf8f813, 0x2b9898b3, 0x22111133
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.word 0xd26969bb, 0xa9d9d970, 0x078e8e89, 0x339494a7
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.word 0x2d9b9bb6, 0x3c1e1e22, 0x15878792, 0xc9e9e920
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.word 0x87cece49, 0xaa5555ff, 0x50282878, 0xa5dfdf7a
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.word 0x038c8c8f, 0x59a1a1f8, 0x09898980, 0x1a0d0d17
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.word 0x65bfbfda, 0xd7e6e631, 0x844242c6, 0xd06868b8
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.word 0x824141c3, 0x299999b0, 0x5a2d2d77, 0x1e0f0f11
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.word 0x7bb0b0cb, 0xa85454fc, 0x6dbbbbd6, 0x2c16163a
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@ Te4[256]
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.byte 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5
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.byte 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76
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.byte 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0
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.byte 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0
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.byte 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc
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.byte 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15
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.byte 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a
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.byte 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75
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.byte 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0
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.byte 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84
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.byte 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b
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.byte 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf
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.byte 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85
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.byte 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8
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.byte 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5
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.byte 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2
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.byte 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17
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.byte 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73
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.byte 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88
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.byte 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb
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.byte 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c
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.byte 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79
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.byte 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9
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.byte 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08
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.byte 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6
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.byte 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a
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.byte 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e
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.byte 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e
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.byte 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94
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.byte 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf
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.byte 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68
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.byte 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
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@ rcon[]
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.word 0x01000000, 0x02000000, 0x04000000, 0x08000000
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.word 0x10000000, 0x20000000, 0x40000000, 0x80000000
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.word 0x1B000000, 0x36000000, 0, 0, 0, 0, 0, 0
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.size AES_Te,.-AES_Te
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@ void AES_encrypt(const unsigned char *in, unsigned char *out,
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@ const AES_KEY *key) {
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.align 5
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ENTRY(AES_encrypt)
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sub r3,pc,#8 @ AES_encrypt
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stmdb sp!,{r1,r4-r12,lr}
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mov r12,r0 @ inp
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mov r11,r2
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sub r10,r3,#AES_encrypt-AES_Te @ Te
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#if __ARM_ARCH__<7
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ldrb r0,[r12,#3] @ load input data in endian-neutral
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ldrb r4,[r12,#2] @ manner...
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ldrb r5,[r12,#1]
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ldrb r6,[r12,#0]
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orr r0,r0,r4,lsl#8
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ldrb r1,[r12,#7]
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orr r0,r0,r5,lsl#16
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ldrb r4,[r12,#6]
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orr r0,r0,r6,lsl#24
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ldrb r5,[r12,#5]
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ldrb r6,[r12,#4]
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orr r1,r1,r4,lsl#8
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ldrb r2,[r12,#11]
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orr r1,r1,r5,lsl#16
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ldrb r4,[r12,#10]
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orr r1,r1,r6,lsl#24
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ldrb r5,[r12,#9]
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ldrb r6,[r12,#8]
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orr r2,r2,r4,lsl#8
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ldrb r3,[r12,#15]
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orr r2,r2,r5,lsl#16
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ldrb r4,[r12,#14]
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orr r2,r2,r6,lsl#24
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ldrb r5,[r12,#13]
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ldrb r6,[r12,#12]
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orr r3,r3,r4,lsl#8
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orr r3,r3,r5,lsl#16
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orr r3,r3,r6,lsl#24
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#else
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ldr r0,[r12,#0]
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ldr r1,[r12,#4]
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ldr r2,[r12,#8]
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ldr r3,[r12,#12]
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#ifdef __ARMEL__
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rev r0,r0
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rev r1,r1
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rev r2,r2
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rev r3,r3
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#endif
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#endif
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bl _armv4_AES_encrypt
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ldr r12,[sp],#4 @ pop out
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#if __ARM_ARCH__>=7
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#ifdef __ARMEL__
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rev r0,r0
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rev r1,r1
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rev r2,r2
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rev r3,r3
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#endif
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str r0,[r12,#0]
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str r1,[r12,#4]
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str r2,[r12,#8]
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str r3,[r12,#12]
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#else
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mov r4,r0,lsr#24 @ write output in endian-neutral
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mov r5,r0,lsr#16 @ manner...
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mov r6,r0,lsr#8
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strb r4,[r12,#0]
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strb r5,[r12,#1]
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mov r4,r1,lsr#24
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strb r6,[r12,#2]
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mov r5,r1,lsr#16
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strb r0,[r12,#3]
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mov r6,r1,lsr#8
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strb r4,[r12,#4]
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strb r5,[r12,#5]
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mov r4,r2,lsr#24
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strb r6,[r12,#6]
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mov r5,r2,lsr#16
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strb r1,[r12,#7]
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mov r6,r2,lsr#8
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strb r4,[r12,#8]
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strb r5,[r12,#9]
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mov r4,r3,lsr#24
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strb r6,[r12,#10]
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mov r5,r3,lsr#16
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strb r2,[r12,#11]
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mov r6,r3,lsr#8
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strb r4,[r12,#12]
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strb r5,[r12,#13]
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strb r6,[r12,#14]
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strb r3,[r12,#15]
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#endif
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ldmia sp!,{r4-r12,pc}
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ENDPROC(AES_encrypt)
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.type _armv4_AES_encrypt,%function
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.align 2
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_armv4_AES_encrypt:
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str lr,[sp,#-4]! @ push lr
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ldmia r11!,{r4-r7}
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eor r0,r0,r4
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ldr r12,[r11,#240-16]
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eor r1,r1,r5
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eor r2,r2,r6
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eor r3,r3,r7
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sub r12,r12,#1
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mov lr,#255
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and r7,lr,r0
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and r8,lr,r0,lsr#8
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and r9,lr,r0,lsr#16
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mov r0,r0,lsr#24
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.Lenc_loop:
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ldr r4,[r10,r7,lsl#2] @ Te3[s0>>0]
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and r7,lr,r1,lsr#16 @ i0
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ldr r5,[r10,r8,lsl#2] @ Te2[s0>>8]
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and r8,lr,r1
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ldr r6,[r10,r9,lsl#2] @ Te1[s0>>16]
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and r9,lr,r1,lsr#8
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ldr r0,[r10,r0,lsl#2] @ Te0[s0>>24]
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mov r1,r1,lsr#24
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ldr r7,[r10,r7,lsl#2] @ Te1[s1>>16]
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ldr r8,[r10,r8,lsl#2] @ Te3[s1>>0]
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ldr r9,[r10,r9,lsl#2] @ Te2[s1>>8]
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eor r0,r0,r7,ror#8
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ldr r1,[r10,r1,lsl#2] @ Te0[s1>>24]
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and r7,lr,r2,lsr#8 @ i0
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eor r5,r5,r8,ror#8
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and r8,lr,r2,lsr#16 @ i1
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eor r6,r6,r9,ror#8
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and r9,lr,r2
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ldr r7,[r10,r7,lsl#2] @ Te2[s2>>8]
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eor r1,r1,r4,ror#24
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ldr r8,[r10,r8,lsl#2] @ Te1[s2>>16]
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mov r2,r2,lsr#24
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ldr r9,[r10,r9,lsl#2] @ Te3[s2>>0]
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eor r0,r0,r7,ror#16
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ldr r2,[r10,r2,lsl#2] @ Te0[s2>>24]
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and r7,lr,r3 @ i0
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eor r1,r1,r8,ror#8
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and r8,lr,r3,lsr#8 @ i1
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eor r6,r6,r9,ror#16
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and r9,lr,r3,lsr#16 @ i2
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ldr r7,[r10,r7,lsl#2] @ Te3[s3>>0]
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eor r2,r2,r5,ror#16
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|
ldr r8,[r10,r8,lsl#2] @ Te2[s3>>8]
|
|
mov r3,r3,lsr#24
|
|
|
|
ldr r9,[r10,r9,lsl#2] @ Te1[s3>>16]
|
|
eor r0,r0,r7,ror#24
|
|
ldr r7,[r11],#16
|
|
eor r1,r1,r8,ror#16
|
|
ldr r3,[r10,r3,lsl#2] @ Te0[s3>>24]
|
|
eor r2,r2,r9,ror#8
|
|
ldr r4,[r11,#-12]
|
|
eor r3,r3,r6,ror#8
|
|
|
|
ldr r5,[r11,#-8]
|
|
eor r0,r0,r7
|
|
ldr r6,[r11,#-4]
|
|
and r7,lr,r0
|
|
eor r1,r1,r4
|
|
and r8,lr,r0,lsr#8
|
|
eor r2,r2,r5
|
|
and r9,lr,r0,lsr#16
|
|
eor r3,r3,r6
|
|
mov r0,r0,lsr#24
|
|
|
|
subs r12,r12,#1
|
|
bne .Lenc_loop
|
|
|
|
add r10,r10,#2
|
|
|
|
ldrb r4,[r10,r7,lsl#2] @ Te4[s0>>0]
|
|
and r7,lr,r1,lsr#16 @ i0
|
|
ldrb r5,[r10,r8,lsl#2] @ Te4[s0>>8]
|
|
and r8,lr,r1
|
|
ldrb r6,[r10,r9,lsl#2] @ Te4[s0>>16]
|
|
and r9,lr,r1,lsr#8
|
|
ldrb r0,[r10,r0,lsl#2] @ Te4[s0>>24]
|
|
mov r1,r1,lsr#24
|
|
|
|
ldrb r7,[r10,r7,lsl#2] @ Te4[s1>>16]
|
|
ldrb r8,[r10,r8,lsl#2] @ Te4[s1>>0]
|
|
ldrb r9,[r10,r9,lsl#2] @ Te4[s1>>8]
|
|
eor r0,r7,r0,lsl#8
|
|
ldrb r1,[r10,r1,lsl#2] @ Te4[s1>>24]
|
|
and r7,lr,r2,lsr#8 @ i0
|
|
eor r5,r8,r5,lsl#8
|
|
and r8,lr,r2,lsr#16 @ i1
|
|
eor r6,r9,r6,lsl#8
|
|
and r9,lr,r2
|
|
ldrb r7,[r10,r7,lsl#2] @ Te4[s2>>8]
|
|
eor r1,r4,r1,lsl#24
|
|
ldrb r8,[r10,r8,lsl#2] @ Te4[s2>>16]
|
|
mov r2,r2,lsr#24
|
|
|
|
ldrb r9,[r10,r9,lsl#2] @ Te4[s2>>0]
|
|
eor r0,r7,r0,lsl#8
|
|
ldrb r2,[r10,r2,lsl#2] @ Te4[s2>>24]
|
|
and r7,lr,r3 @ i0
|
|
eor r1,r1,r8,lsl#16
|
|
and r8,lr,r3,lsr#8 @ i1
|
|
eor r6,r9,r6,lsl#8
|
|
and r9,lr,r3,lsr#16 @ i2
|
|
ldrb r7,[r10,r7,lsl#2] @ Te4[s3>>0]
|
|
eor r2,r5,r2,lsl#24
|
|
ldrb r8,[r10,r8,lsl#2] @ Te4[s3>>8]
|
|
mov r3,r3,lsr#24
|
|
|
|
ldrb r9,[r10,r9,lsl#2] @ Te4[s3>>16]
|
|
eor r0,r7,r0,lsl#8
|
|
ldr r7,[r11,#0]
|
|
ldrb r3,[r10,r3,lsl#2] @ Te4[s3>>24]
|
|
eor r1,r1,r8,lsl#8
|
|
ldr r4,[r11,#4]
|
|
eor r2,r2,r9,lsl#16
|
|
ldr r5,[r11,#8]
|
|
eor r3,r6,r3,lsl#24
|
|
ldr r6,[r11,#12]
|
|
|
|
eor r0,r0,r7
|
|
eor r1,r1,r4
|
|
eor r2,r2,r5
|
|
eor r3,r3,r6
|
|
|
|
sub r10,r10,#2
|
|
ldr pc,[sp],#4 @ pop and return
|
|
.size _armv4_AES_encrypt,.-_armv4_AES_encrypt
|
|
|
|
.align 5
|
|
ENTRY(private_AES_set_encrypt_key)
|
|
_armv4_AES_set_encrypt_key:
|
|
sub r3,pc,#8 @ AES_set_encrypt_key
|
|
teq r0,#0
|
|
moveq r0,#-1
|
|
beq .Labrt
|
|
teq r2,#0
|
|
moveq r0,#-1
|
|
beq .Labrt
|
|
|
|
teq r1,#128
|
|
beq .Lok
|
|
teq r1,#192
|
|
beq .Lok
|
|
teq r1,#256
|
|
movne r0,#-1
|
|
bne .Labrt
|
|
|
|
.Lok: stmdb sp!,{r4-r12,lr}
|
|
sub r10,r3,#_armv4_AES_set_encrypt_key-AES_Te-1024 @ Te4
|
|
|
|
mov r12,r0 @ inp
|
|
mov lr,r1 @ bits
|
|
mov r11,r2 @ key
|
|
|
|
#if __ARM_ARCH__<7
|
|
ldrb r0,[r12,#3] @ load input data in endian-neutral
|
|
ldrb r4,[r12,#2] @ manner...
|
|
ldrb r5,[r12,#1]
|
|
ldrb r6,[r12,#0]
|
|
orr r0,r0,r4,lsl#8
|
|
ldrb r1,[r12,#7]
|
|
orr r0,r0,r5,lsl#16
|
|
ldrb r4,[r12,#6]
|
|
orr r0,r0,r6,lsl#24
|
|
ldrb r5,[r12,#5]
|
|
ldrb r6,[r12,#4]
|
|
orr r1,r1,r4,lsl#8
|
|
ldrb r2,[r12,#11]
|
|
orr r1,r1,r5,lsl#16
|
|
ldrb r4,[r12,#10]
|
|
orr r1,r1,r6,lsl#24
|
|
ldrb r5,[r12,#9]
|
|
ldrb r6,[r12,#8]
|
|
orr r2,r2,r4,lsl#8
|
|
ldrb r3,[r12,#15]
|
|
orr r2,r2,r5,lsl#16
|
|
ldrb r4,[r12,#14]
|
|
orr r2,r2,r6,lsl#24
|
|
ldrb r5,[r12,#13]
|
|
ldrb r6,[r12,#12]
|
|
orr r3,r3,r4,lsl#8
|
|
str r0,[r11],#16
|
|
orr r3,r3,r5,lsl#16
|
|
str r1,[r11,#-12]
|
|
orr r3,r3,r6,lsl#24
|
|
str r2,[r11,#-8]
|
|
str r3,[r11,#-4]
|
|
#else
|
|
ldr r0,[r12,#0]
|
|
ldr r1,[r12,#4]
|
|
ldr r2,[r12,#8]
|
|
ldr r3,[r12,#12]
|
|
#ifdef __ARMEL__
|
|
rev r0,r0
|
|
rev r1,r1
|
|
rev r2,r2
|
|
rev r3,r3
|
|
#endif
|
|
str r0,[r11],#16
|
|
str r1,[r11,#-12]
|
|
str r2,[r11,#-8]
|
|
str r3,[r11,#-4]
|
|
#endif
|
|
|
|
teq lr,#128
|
|
bne .Lnot128
|
|
mov r12,#10
|
|
str r12,[r11,#240-16]
|
|
add r6,r10,#256 @ rcon
|
|
mov lr,#255
|
|
|
|
.L128_loop:
|
|
and r5,lr,r3,lsr#24
|
|
and r7,lr,r3,lsr#16
|
|
ldrb r5,[r10,r5]
|
|
and r8,lr,r3,lsr#8
|
|
ldrb r7,[r10,r7]
|
|
and r9,lr,r3
|
|
ldrb r8,[r10,r8]
|
|
orr r5,r5,r7,lsl#24
|
|
ldrb r9,[r10,r9]
|
|
orr r5,r5,r8,lsl#16
|
|
ldr r4,[r6],#4 @ rcon[i++]
|
|
orr r5,r5,r9,lsl#8
|
|
eor r5,r5,r4
|
|
eor r0,r0,r5 @ rk[4]=rk[0]^...
|
|
eor r1,r1,r0 @ rk[5]=rk[1]^rk[4]
|
|
str r0,[r11],#16
|
|
eor r2,r2,r1 @ rk[6]=rk[2]^rk[5]
|
|
str r1,[r11,#-12]
|
|
eor r3,r3,r2 @ rk[7]=rk[3]^rk[6]
|
|
str r2,[r11,#-8]
|
|
subs r12,r12,#1
|
|
str r3,[r11,#-4]
|
|
bne .L128_loop
|
|
sub r2,r11,#176
|
|
b .Ldone
|
|
|
|
.Lnot128:
|
|
#if __ARM_ARCH__<7
|
|
ldrb r8,[r12,#19]
|
|
ldrb r4,[r12,#18]
|
|
ldrb r5,[r12,#17]
|
|
ldrb r6,[r12,#16]
|
|
orr r8,r8,r4,lsl#8
|
|
ldrb r9,[r12,#23]
|
|
orr r8,r8,r5,lsl#16
|
|
ldrb r4,[r12,#22]
|
|
orr r8,r8,r6,lsl#24
|
|
ldrb r5,[r12,#21]
|
|
ldrb r6,[r12,#20]
|
|
orr r9,r9,r4,lsl#8
|
|
orr r9,r9,r5,lsl#16
|
|
str r8,[r11],#8
|
|
orr r9,r9,r6,lsl#24
|
|
str r9,[r11,#-4]
|
|
#else
|
|
ldr r8,[r12,#16]
|
|
ldr r9,[r12,#20]
|
|
#ifdef __ARMEL__
|
|
rev r8,r8
|
|
rev r9,r9
|
|
#endif
|
|
str r8,[r11],#8
|
|
str r9,[r11,#-4]
|
|
#endif
|
|
|
|
teq lr,#192
|
|
bne .Lnot192
|
|
mov r12,#12
|
|
str r12,[r11,#240-24]
|
|
add r6,r10,#256 @ rcon
|
|
mov lr,#255
|
|
mov r12,#8
|
|
|
|
.L192_loop:
|
|
and r5,lr,r9,lsr#24
|
|
and r7,lr,r9,lsr#16
|
|
ldrb r5,[r10,r5]
|
|
and r8,lr,r9,lsr#8
|
|
ldrb r7,[r10,r7]
|
|
and r9,lr,r9
|
|
ldrb r8,[r10,r8]
|
|
orr r5,r5,r7,lsl#24
|
|
ldrb r9,[r10,r9]
|
|
orr r5,r5,r8,lsl#16
|
|
ldr r4,[r6],#4 @ rcon[i++]
|
|
orr r5,r5,r9,lsl#8
|
|
eor r9,r5,r4
|
|
eor r0,r0,r9 @ rk[6]=rk[0]^...
|
|
eor r1,r1,r0 @ rk[7]=rk[1]^rk[6]
|
|
str r0,[r11],#24
|
|
eor r2,r2,r1 @ rk[8]=rk[2]^rk[7]
|
|
str r1,[r11,#-20]
|
|
eor r3,r3,r2 @ rk[9]=rk[3]^rk[8]
|
|
str r2,[r11,#-16]
|
|
subs r12,r12,#1
|
|
str r3,[r11,#-12]
|
|
subeq r2,r11,#216
|
|
beq .Ldone
|
|
|
|
ldr r7,[r11,#-32]
|
|
ldr r8,[r11,#-28]
|
|
eor r7,r7,r3 @ rk[10]=rk[4]^rk[9]
|
|
eor r9,r8,r7 @ rk[11]=rk[5]^rk[10]
|
|
str r7,[r11,#-8]
|
|
str r9,[r11,#-4]
|
|
b .L192_loop
|
|
|
|
.Lnot192:
|
|
#if __ARM_ARCH__<7
|
|
ldrb r8,[r12,#27]
|
|
ldrb r4,[r12,#26]
|
|
ldrb r5,[r12,#25]
|
|
ldrb r6,[r12,#24]
|
|
orr r8,r8,r4,lsl#8
|
|
ldrb r9,[r12,#31]
|
|
orr r8,r8,r5,lsl#16
|
|
ldrb r4,[r12,#30]
|
|
orr r8,r8,r6,lsl#24
|
|
ldrb r5,[r12,#29]
|
|
ldrb r6,[r12,#28]
|
|
orr r9,r9,r4,lsl#8
|
|
orr r9,r9,r5,lsl#16
|
|
str r8,[r11],#8
|
|
orr r9,r9,r6,lsl#24
|
|
str r9,[r11,#-4]
|
|
#else
|
|
ldr r8,[r12,#24]
|
|
ldr r9,[r12,#28]
|
|
#ifdef __ARMEL__
|
|
rev r8,r8
|
|
rev r9,r9
|
|
#endif
|
|
str r8,[r11],#8
|
|
str r9,[r11,#-4]
|
|
#endif
|
|
|
|
mov r12,#14
|
|
str r12,[r11,#240-32]
|
|
add r6,r10,#256 @ rcon
|
|
mov lr,#255
|
|
mov r12,#7
|
|
|
|
.L256_loop:
|
|
and r5,lr,r9,lsr#24
|
|
and r7,lr,r9,lsr#16
|
|
ldrb r5,[r10,r5]
|
|
and r8,lr,r9,lsr#8
|
|
ldrb r7,[r10,r7]
|
|
and r9,lr,r9
|
|
ldrb r8,[r10,r8]
|
|
orr r5,r5,r7,lsl#24
|
|
ldrb r9,[r10,r9]
|
|
orr r5,r5,r8,lsl#16
|
|
ldr r4,[r6],#4 @ rcon[i++]
|
|
orr r5,r5,r9,lsl#8
|
|
eor r9,r5,r4
|
|
eor r0,r0,r9 @ rk[8]=rk[0]^...
|
|
eor r1,r1,r0 @ rk[9]=rk[1]^rk[8]
|
|
str r0,[r11],#32
|
|
eor r2,r2,r1 @ rk[10]=rk[2]^rk[9]
|
|
str r1,[r11,#-28]
|
|
eor r3,r3,r2 @ rk[11]=rk[3]^rk[10]
|
|
str r2,[r11,#-24]
|
|
subs r12,r12,#1
|
|
str r3,[r11,#-20]
|
|
subeq r2,r11,#256
|
|
beq .Ldone
|
|
|
|
and r5,lr,r3
|
|
and r7,lr,r3,lsr#8
|
|
ldrb r5,[r10,r5]
|
|
and r8,lr,r3,lsr#16
|
|
ldrb r7,[r10,r7]
|
|
and r9,lr,r3,lsr#24
|
|
ldrb r8,[r10,r8]
|
|
orr r5,r5,r7,lsl#8
|
|
ldrb r9,[r10,r9]
|
|
orr r5,r5,r8,lsl#16
|
|
ldr r4,[r11,#-48]
|
|
orr r5,r5,r9,lsl#24
|
|
|
|
ldr r7,[r11,#-44]
|
|
ldr r8,[r11,#-40]
|
|
eor r4,r4,r5 @ rk[12]=rk[4]^...
|
|
ldr r9,[r11,#-36]
|
|
eor r7,r7,r4 @ rk[13]=rk[5]^rk[12]
|
|
str r4,[r11,#-16]
|
|
eor r8,r8,r7 @ rk[14]=rk[6]^rk[13]
|
|
str r7,[r11,#-12]
|
|
eor r9,r9,r8 @ rk[15]=rk[7]^rk[14]
|
|
str r8,[r11,#-8]
|
|
str r9,[r11,#-4]
|
|
b .L256_loop
|
|
|
|
.Ldone: mov r0,#0
|
|
ldmia sp!,{r4-r12,lr}
|
|
.Labrt: mov pc,lr
|
|
ENDPROC(private_AES_set_encrypt_key)
|
|
|
|
.align 5
|
|
ENTRY(private_AES_set_decrypt_key)
|
|
str lr,[sp,#-4]! @ push lr
|
|
#if 0
|
|
@ kernel does both of these in setkey so optimise this bit out by
|
|
@ expecting the key to already have the enc_key work done (see aes_glue.c)
|
|
bl _armv4_AES_set_encrypt_key
|
|
#else
|
|
mov r0,#0
|
|
#endif
|
|
teq r0,#0
|
|
ldrne lr,[sp],#4 @ pop lr
|
|
bne .Labrt
|
|
|
|
stmdb sp!,{r4-r12}
|
|
|
|
ldr r12,[r2,#240] @ AES_set_encrypt_key preserves r2,
|
|
mov r11,r2 @ which is AES_KEY *key
|
|
mov r7,r2
|
|
add r8,r2,r12,lsl#4
|
|
|
|
.Linv: ldr r0,[r7]
|
|
ldr r1,[r7,#4]
|
|
ldr r2,[r7,#8]
|
|
ldr r3,[r7,#12]
|
|
ldr r4,[r8]
|
|
ldr r5,[r8,#4]
|
|
ldr r6,[r8,#8]
|
|
ldr r9,[r8,#12]
|
|
str r0,[r8],#-16
|
|
str r1,[r8,#16+4]
|
|
str r2,[r8,#16+8]
|
|
str r3,[r8,#16+12]
|
|
str r4,[r7],#16
|
|
str r5,[r7,#-12]
|
|
str r6,[r7,#-8]
|
|
str r9,[r7,#-4]
|
|
teq r7,r8
|
|
bne .Linv
|
|
ldr r0,[r11,#16]! @ prefetch tp1
|
|
mov r7,#0x80
|
|
mov r8,#0x1b
|
|
orr r7,r7,#0x8000
|
|
orr r8,r8,#0x1b00
|
|
orr r7,r7,r7,lsl#16
|
|
orr r8,r8,r8,lsl#16
|
|
sub r12,r12,#1
|
|
mvn r9,r7
|
|
mov r12,r12,lsl#2 @ (rounds-1)*4
|
|
|
|
.Lmix: and r4,r0,r7
|
|
and r1,r0,r9
|
|
sub r4,r4,r4,lsr#7
|
|
and r4,r4,r8
|
|
eor r1,r4,r1,lsl#1 @ tp2
|
|
|
|
and r4,r1,r7
|
|
and r2,r1,r9
|
|
sub r4,r4,r4,lsr#7
|
|
and r4,r4,r8
|
|
eor r2,r4,r2,lsl#1 @ tp4
|
|
|
|
and r4,r2,r7
|
|
and r3,r2,r9
|
|
sub r4,r4,r4,lsr#7
|
|
and r4,r4,r8
|
|
eor r3,r4,r3,lsl#1 @ tp8
|
|
|
|
eor r4,r1,r2
|
|
eor r5,r0,r3 @ tp9
|
|
eor r4,r4,r3 @ tpe
|
|
eor r4,r4,r1,ror#24
|
|
eor r4,r4,r5,ror#24 @ ^= ROTATE(tpb=tp9^tp2,8)
|
|
eor r4,r4,r2,ror#16
|
|
eor r4,r4,r5,ror#16 @ ^= ROTATE(tpd=tp9^tp4,16)
|
|
eor r4,r4,r5,ror#8 @ ^= ROTATE(tp9,24)
|
|
|
|
ldr r0,[r11,#4] @ prefetch tp1
|
|
str r4,[r11],#4
|
|
subs r12,r12,#1
|
|
bne .Lmix
|
|
|
|
mov r0,#0
|
|
ldmia sp!,{r4-r12,pc}
|
|
ENDPROC(private_AES_set_decrypt_key)
|
|
|
|
.type AES_Td,%object
|
|
.align 5
|
|
AES_Td:
|
|
.word 0x51f4a750, 0x7e416553, 0x1a17a4c3, 0x3a275e96
|
|
.word 0x3bab6bcb, 0x1f9d45f1, 0xacfa58ab, 0x4be30393
|
|
.word 0x2030fa55, 0xad766df6, 0x88cc7691, 0xf5024c25
|
|
.word 0x4fe5d7fc, 0xc52acbd7, 0x26354480, 0xb562a38f
|
|
.word 0xdeb15a49, 0x25ba1b67, 0x45ea0e98, 0x5dfec0e1
|
|
.word 0xc32f7502, 0x814cf012, 0x8d4697a3, 0x6bd3f9c6
|
|
.word 0x038f5fe7, 0x15929c95, 0xbf6d7aeb, 0x955259da
|
|
.word 0xd4be832d, 0x587421d3, 0x49e06929, 0x8ec9c844
|
|
.word 0x75c2896a, 0xf48e7978, 0x99583e6b, 0x27b971dd
|
|
.word 0xbee14fb6, 0xf088ad17, 0xc920ac66, 0x7dce3ab4
|
|
.word 0x63df4a18, 0xe51a3182, 0x97513360, 0x62537f45
|
|
.word 0xb16477e0, 0xbb6bae84, 0xfe81a01c, 0xf9082b94
|
|
.word 0x70486858, 0x8f45fd19, 0x94de6c87, 0x527bf8b7
|
|
.word 0xab73d323, 0x724b02e2, 0xe31f8f57, 0x6655ab2a
|
|
.word 0xb2eb2807, 0x2fb5c203, 0x86c57b9a, 0xd33708a5
|
|
.word 0x302887f2, 0x23bfa5b2, 0x02036aba, 0xed16825c
|
|
.word 0x8acf1c2b, 0xa779b492, 0xf307f2f0, 0x4e69e2a1
|
|
.word 0x65daf4cd, 0x0605bed5, 0xd134621f, 0xc4a6fe8a
|
|
.word 0x342e539d, 0xa2f355a0, 0x058ae132, 0xa4f6eb75
|
|
.word 0x0b83ec39, 0x4060efaa, 0x5e719f06, 0xbd6e1051
|
|
.word 0x3e218af9, 0x96dd063d, 0xdd3e05ae, 0x4de6bd46
|
|
.word 0x91548db5, 0x71c45d05, 0x0406d46f, 0x605015ff
|
|
.word 0x1998fb24, 0xd6bde997, 0x894043cc, 0x67d99e77
|
|
.word 0xb0e842bd, 0x07898b88, 0xe7195b38, 0x79c8eedb
|
|
.word 0xa17c0a47, 0x7c420fe9, 0xf8841ec9, 0x00000000
|
|
.word 0x09808683, 0x322bed48, 0x1e1170ac, 0x6c5a724e
|
|
.word 0xfd0efffb, 0x0f853856, 0x3daed51e, 0x362d3927
|
|
.word 0x0a0fd964, 0x685ca621, 0x9b5b54d1, 0x24362e3a
|
|
.word 0x0c0a67b1, 0x9357e70f, 0xb4ee96d2, 0x1b9b919e
|
|
.word 0x80c0c54f, 0x61dc20a2, 0x5a774b69, 0x1c121a16
|
|
.word 0xe293ba0a, 0xc0a02ae5, 0x3c22e043, 0x121b171d
|
|
.word 0x0e090d0b, 0xf28bc7ad, 0x2db6a8b9, 0x141ea9c8
|
|
.word 0x57f11985, 0xaf75074c, 0xee99ddbb, 0xa37f60fd
|
|
.word 0xf701269f, 0x5c72f5bc, 0x44663bc5, 0x5bfb7e34
|
|
.word 0x8b432976, 0xcb23c6dc, 0xb6edfc68, 0xb8e4f163
|
|
.word 0xd731dcca, 0x42638510, 0x13972240, 0x84c61120
|
|
.word 0x854a247d, 0xd2bb3df8, 0xaef93211, 0xc729a16d
|
|
.word 0x1d9e2f4b, 0xdcb230f3, 0x0d8652ec, 0x77c1e3d0
|
|
.word 0x2bb3166c, 0xa970b999, 0x119448fa, 0x47e96422
|
|
.word 0xa8fc8cc4, 0xa0f03f1a, 0x567d2cd8, 0x223390ef
|
|
.word 0x87494ec7, 0xd938d1c1, 0x8ccaa2fe, 0x98d40b36
|
|
.word 0xa6f581cf, 0xa57ade28, 0xdab78e26, 0x3fadbfa4
|
|
.word 0x2c3a9de4, 0x5078920d, 0x6a5fcc9b, 0x547e4662
|
|
.word 0xf68d13c2, 0x90d8b8e8, 0x2e39f75e, 0x82c3aff5
|
|
.word 0x9f5d80be, 0x69d0937c, 0x6fd52da9, 0xcf2512b3
|
|
.word 0xc8ac993b, 0x10187da7, 0xe89c636e, 0xdb3bbb7b
|
|
.word 0xcd267809, 0x6e5918f4, 0xec9ab701, 0x834f9aa8
|
|
.word 0xe6956e65, 0xaaffe67e, 0x21bccf08, 0xef15e8e6
|
|
.word 0xbae79bd9, 0x4a6f36ce, 0xea9f09d4, 0x29b07cd6
|
|
.word 0x31a4b2af, 0x2a3f2331, 0xc6a59430, 0x35a266c0
|
|
.word 0x744ebc37, 0xfc82caa6, 0xe090d0b0, 0x33a7d815
|
|
.word 0xf104984a, 0x41ecdaf7, 0x7fcd500e, 0x1791f62f
|
|
.word 0x764dd68d, 0x43efb04d, 0xccaa4d54, 0xe49604df
|
|
.word 0x9ed1b5e3, 0x4c6a881b, 0xc12c1fb8, 0x4665517f
|
|
.word 0x9d5eea04, 0x018c355d, 0xfa877473, 0xfb0b412e
|
|
.word 0xb3671d5a, 0x92dbd252, 0xe9105633, 0x6dd64713
|
|
.word 0x9ad7618c, 0x37a10c7a, 0x59f8148e, 0xeb133c89
|
|
.word 0xcea927ee, 0xb761c935, 0xe11ce5ed, 0x7a47b13c
|
|
.word 0x9cd2df59, 0x55f2733f, 0x1814ce79, 0x73c737bf
|
|
.word 0x53f7cdea, 0x5ffdaa5b, 0xdf3d6f14, 0x7844db86
|
|
.word 0xcaaff381, 0xb968c43e, 0x3824342c, 0xc2a3405f
|
|
.word 0x161dc372, 0xbce2250c, 0x283c498b, 0xff0d9541
|
|
.word 0x39a80171, 0x080cb3de, 0xd8b4e49c, 0x6456c190
|
|
.word 0x7bcb8461, 0xd532b670, 0x486c5c74, 0xd0b85742
|
|
@ Td4[256]
|
|
.byte 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38
|
|
.byte 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb
|
|
.byte 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87
|
|
.byte 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb
|
|
.byte 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d
|
|
.byte 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e
|
|
.byte 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2
|
|
.byte 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25
|
|
.byte 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16
|
|
.byte 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92
|
|
.byte 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda
|
|
.byte 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84
|
|
.byte 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a
|
|
.byte 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06
|
|
.byte 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02
|
|
.byte 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b
|
|
.byte 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea
|
|
.byte 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73
|
|
.byte 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85
|
|
.byte 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e
|
|
.byte 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89
|
|
.byte 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b
|
|
.byte 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20
|
|
.byte 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4
|
|
.byte 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31
|
|
.byte 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f
|
|
.byte 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d
|
|
.byte 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef
|
|
.byte 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0
|
|
.byte 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61
|
|
.byte 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26
|
|
.byte 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
|
|
.size AES_Td,.-AES_Td
|
|
|
|
@ void AES_decrypt(const unsigned char *in, unsigned char *out,
|
|
@ const AES_KEY *key) {
|
|
.align 5
|
|
ENTRY(AES_decrypt)
|
|
sub r3,pc,#8 @ AES_decrypt
|
|
stmdb sp!,{r1,r4-r12,lr}
|
|
mov r12,r0 @ inp
|
|
mov r11,r2
|
|
sub r10,r3,#AES_decrypt-AES_Td @ Td
|
|
#if __ARM_ARCH__<7
|
|
ldrb r0,[r12,#3] @ load input data in endian-neutral
|
|
ldrb r4,[r12,#2] @ manner...
|
|
ldrb r5,[r12,#1]
|
|
ldrb r6,[r12,#0]
|
|
orr r0,r0,r4,lsl#8
|
|
ldrb r1,[r12,#7]
|
|
orr r0,r0,r5,lsl#16
|
|
ldrb r4,[r12,#6]
|
|
orr r0,r0,r6,lsl#24
|
|
ldrb r5,[r12,#5]
|
|
ldrb r6,[r12,#4]
|
|
orr r1,r1,r4,lsl#8
|
|
ldrb r2,[r12,#11]
|
|
orr r1,r1,r5,lsl#16
|
|
ldrb r4,[r12,#10]
|
|
orr r1,r1,r6,lsl#24
|
|
ldrb r5,[r12,#9]
|
|
ldrb r6,[r12,#8]
|
|
orr r2,r2,r4,lsl#8
|
|
ldrb r3,[r12,#15]
|
|
orr r2,r2,r5,lsl#16
|
|
ldrb r4,[r12,#14]
|
|
orr r2,r2,r6,lsl#24
|
|
ldrb r5,[r12,#13]
|
|
ldrb r6,[r12,#12]
|
|
orr r3,r3,r4,lsl#8
|
|
orr r3,r3,r5,lsl#16
|
|
orr r3,r3,r6,lsl#24
|
|
#else
|
|
ldr r0,[r12,#0]
|
|
ldr r1,[r12,#4]
|
|
ldr r2,[r12,#8]
|
|
ldr r3,[r12,#12]
|
|
#ifdef __ARMEL__
|
|
rev r0,r0
|
|
rev r1,r1
|
|
rev r2,r2
|
|
rev r3,r3
|
|
#endif
|
|
#endif
|
|
bl _armv4_AES_decrypt
|
|
|
|
ldr r12,[sp],#4 @ pop out
|
|
#if __ARM_ARCH__>=7
|
|
#ifdef __ARMEL__
|
|
rev r0,r0
|
|
rev r1,r1
|
|
rev r2,r2
|
|
rev r3,r3
|
|
#endif
|
|
str r0,[r12,#0]
|
|
str r1,[r12,#4]
|
|
str r2,[r12,#8]
|
|
str r3,[r12,#12]
|
|
#else
|
|
mov r4,r0,lsr#24 @ write output in endian-neutral
|
|
mov r5,r0,lsr#16 @ manner...
|
|
mov r6,r0,lsr#8
|
|
strb r4,[r12,#0]
|
|
strb r5,[r12,#1]
|
|
mov r4,r1,lsr#24
|
|
strb r6,[r12,#2]
|
|
mov r5,r1,lsr#16
|
|
strb r0,[r12,#3]
|
|
mov r6,r1,lsr#8
|
|
strb r4,[r12,#4]
|
|
strb r5,[r12,#5]
|
|
mov r4,r2,lsr#24
|
|
strb r6,[r12,#6]
|
|
mov r5,r2,lsr#16
|
|
strb r1,[r12,#7]
|
|
mov r6,r2,lsr#8
|
|
strb r4,[r12,#8]
|
|
strb r5,[r12,#9]
|
|
mov r4,r3,lsr#24
|
|
strb r6,[r12,#10]
|
|
mov r5,r3,lsr#16
|
|
strb r2,[r12,#11]
|
|
mov r6,r3,lsr#8
|
|
strb r4,[r12,#12]
|
|
strb r5,[r12,#13]
|
|
strb r6,[r12,#14]
|
|
strb r3,[r12,#15]
|
|
#endif
|
|
ldmia sp!,{r4-r12,pc}
|
|
ENDPROC(AES_decrypt)
|
|
|
|
.type _armv4_AES_decrypt,%function
|
|
.align 2
|
|
_armv4_AES_decrypt:
|
|
str lr,[sp,#-4]! @ push lr
|
|
ldmia r11!,{r4-r7}
|
|
eor r0,r0,r4
|
|
ldr r12,[r11,#240-16]
|
|
eor r1,r1,r5
|
|
eor r2,r2,r6
|
|
eor r3,r3,r7
|
|
sub r12,r12,#1
|
|
mov lr,#255
|
|
|
|
and r7,lr,r0,lsr#16
|
|
and r8,lr,r0,lsr#8
|
|
and r9,lr,r0
|
|
mov r0,r0,lsr#24
|
|
.Ldec_loop:
|
|
ldr r4,[r10,r7,lsl#2] @ Td1[s0>>16]
|
|
and r7,lr,r1 @ i0
|
|
ldr r5,[r10,r8,lsl#2] @ Td2[s0>>8]
|
|
and r8,lr,r1,lsr#16
|
|
ldr r6,[r10,r9,lsl#2] @ Td3[s0>>0]
|
|
and r9,lr,r1,lsr#8
|
|
ldr r0,[r10,r0,lsl#2] @ Td0[s0>>24]
|
|
mov r1,r1,lsr#24
|
|
|
|
ldr r7,[r10,r7,lsl#2] @ Td3[s1>>0]
|
|
ldr r8,[r10,r8,lsl#2] @ Td1[s1>>16]
|
|
ldr r9,[r10,r9,lsl#2] @ Td2[s1>>8]
|
|
eor r0,r0,r7,ror#24
|
|
ldr r1,[r10,r1,lsl#2] @ Td0[s1>>24]
|
|
and r7,lr,r2,lsr#8 @ i0
|
|
eor r5,r8,r5,ror#8
|
|
and r8,lr,r2 @ i1
|
|
eor r6,r9,r6,ror#8
|
|
and r9,lr,r2,lsr#16
|
|
ldr r7,[r10,r7,lsl#2] @ Td2[s2>>8]
|
|
eor r1,r1,r4,ror#8
|
|
ldr r8,[r10,r8,lsl#2] @ Td3[s2>>0]
|
|
mov r2,r2,lsr#24
|
|
|
|
ldr r9,[r10,r9,lsl#2] @ Td1[s2>>16]
|
|
eor r0,r0,r7,ror#16
|
|
ldr r2,[r10,r2,lsl#2] @ Td0[s2>>24]
|
|
and r7,lr,r3,lsr#16 @ i0
|
|
eor r1,r1,r8,ror#24
|
|
and r8,lr,r3,lsr#8 @ i1
|
|
eor r6,r9,r6,ror#8
|
|
and r9,lr,r3 @ i2
|
|
ldr r7,[r10,r7,lsl#2] @ Td1[s3>>16]
|
|
eor r2,r2,r5,ror#8
|
|
ldr r8,[r10,r8,lsl#2] @ Td2[s3>>8]
|
|
mov r3,r3,lsr#24
|
|
|
|
ldr r9,[r10,r9,lsl#2] @ Td3[s3>>0]
|
|
eor r0,r0,r7,ror#8
|
|
ldr r7,[r11],#16
|
|
eor r1,r1,r8,ror#16
|
|
ldr r3,[r10,r3,lsl#2] @ Td0[s3>>24]
|
|
eor r2,r2,r9,ror#24
|
|
|
|
ldr r4,[r11,#-12]
|
|
eor r0,r0,r7
|
|
ldr r5,[r11,#-8]
|
|
eor r3,r3,r6,ror#8
|
|
ldr r6,[r11,#-4]
|
|
and r7,lr,r0,lsr#16
|
|
eor r1,r1,r4
|
|
and r8,lr,r0,lsr#8
|
|
eor r2,r2,r5
|
|
and r9,lr,r0
|
|
eor r3,r3,r6
|
|
mov r0,r0,lsr#24
|
|
|
|
subs r12,r12,#1
|
|
bne .Ldec_loop
|
|
|
|
add r10,r10,#1024
|
|
|
|
ldr r5,[r10,#0] @ prefetch Td4
|
|
ldr r6,[r10,#32]
|
|
ldr r4,[r10,#64]
|
|
ldr r5,[r10,#96]
|
|
ldr r6,[r10,#128]
|
|
ldr r4,[r10,#160]
|
|
ldr r5,[r10,#192]
|
|
ldr r6,[r10,#224]
|
|
|
|
ldrb r0,[r10,r0] @ Td4[s0>>24]
|
|
ldrb r4,[r10,r7] @ Td4[s0>>16]
|
|
and r7,lr,r1 @ i0
|
|
ldrb r5,[r10,r8] @ Td4[s0>>8]
|
|
and r8,lr,r1,lsr#16
|
|
ldrb r6,[r10,r9] @ Td4[s0>>0]
|
|
and r9,lr,r1,lsr#8
|
|
|
|
ldrb r7,[r10,r7] @ Td4[s1>>0]
|
|
ARM( ldrb r1,[r10,r1,lsr#24] ) @ Td4[s1>>24]
|
|
THUMB( add r1,r10,r1,lsr#24 ) @ Td4[s1>>24]
|
|
THUMB( ldrb r1,[r1] )
|
|
ldrb r8,[r10,r8] @ Td4[s1>>16]
|
|
eor r0,r7,r0,lsl#24
|
|
ldrb r9,[r10,r9] @ Td4[s1>>8]
|
|
eor r1,r4,r1,lsl#8
|
|
and r7,lr,r2,lsr#8 @ i0
|
|
eor r5,r5,r8,lsl#8
|
|
and r8,lr,r2 @ i1
|
|
ldrb r7,[r10,r7] @ Td4[s2>>8]
|
|
eor r6,r6,r9,lsl#8
|
|
ldrb r8,[r10,r8] @ Td4[s2>>0]
|
|
and r9,lr,r2,lsr#16
|
|
|
|
ARM( ldrb r2,[r10,r2,lsr#24] ) @ Td4[s2>>24]
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THUMB( add r2,r10,r2,lsr#24 ) @ Td4[s2>>24]
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THUMB( ldrb r2,[r2] )
|
|
eor r0,r0,r7,lsl#8
|
|
ldrb r9,[r10,r9] @ Td4[s2>>16]
|
|
eor r1,r8,r1,lsl#16
|
|
and r7,lr,r3,lsr#16 @ i0
|
|
eor r2,r5,r2,lsl#16
|
|
and r8,lr,r3,lsr#8 @ i1
|
|
ldrb r7,[r10,r7] @ Td4[s3>>16]
|
|
eor r6,r6,r9,lsl#16
|
|
ldrb r8,[r10,r8] @ Td4[s3>>8]
|
|
and r9,lr,r3 @ i2
|
|
|
|
ldrb r9,[r10,r9] @ Td4[s3>>0]
|
|
ARM( ldrb r3,[r10,r3,lsr#24] ) @ Td4[s3>>24]
|
|
THUMB( add r3,r10,r3,lsr#24 ) @ Td4[s3>>24]
|
|
THUMB( ldrb r3,[r3] )
|
|
eor r0,r0,r7,lsl#16
|
|
ldr r7,[r11,#0]
|
|
eor r1,r1,r8,lsl#8
|
|
ldr r4,[r11,#4]
|
|
eor r2,r9,r2,lsl#8
|
|
ldr r5,[r11,#8]
|
|
eor r3,r6,r3,lsl#24
|
|
ldr r6,[r11,#12]
|
|
|
|
eor r0,r0,r7
|
|
eor r1,r1,r4
|
|
eor r2,r2,r5
|
|
eor r3,r3,r6
|
|
|
|
sub r10,r10,#1024
|
|
ldr pc,[sp],#4 @ pop and return
|
|
.size _armv4_AES_decrypt,.-_armv4_AES_decrypt
|
|
.asciz "AES for ARMv4, CRYPTOGAMS by <appro@openssl.org>"
|
|
.align 2
|