450 строки
12 KiB
ArmAsm
450 строки
12 KiB
ArmAsm
/* sha512-armv7-neon.S - ARM/NEON assembly implementation of SHA-512 transform
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*
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* Copyright (C) 2013 Jussi Kivilinna <jussi.kivilinna@iki.fi>
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) && \
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defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) && \
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defined(HAVE_GCC_INLINE_ASM_NEON)
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.text
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.syntax unified
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.fpu neon
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.arm
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/* structure of SHA512_CONTEXT */
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#define hd_a 0
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#define hd_b ((hd_a) + 8)
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#define hd_c ((hd_b) + 8)
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#define hd_d ((hd_c) + 8)
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#define hd_e ((hd_d) + 8)
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#define hd_f ((hd_e) + 8)
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#define hd_g ((hd_f) + 8)
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/* register macros */
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#define RK %r2
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#define RA d0
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#define RB d1
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#define RC d2
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#define RD d3
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#define RE d4
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#define RF d5
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#define RG d6
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#define RH d7
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#define RT0 d8
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#define RT1 d9
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#define RT2 d10
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#define RT3 d11
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#define RT4 d12
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#define RT5 d13
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#define RT6 d14
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#define RT7 d15
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#define RT01q q4
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#define RT23q q5
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#define RT45q q6
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#define RT67q q7
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#define RW0 d16
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#define RW1 d17
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#define RW2 d18
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#define RW3 d19
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#define RW4 d20
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#define RW5 d21
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#define RW6 d22
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#define RW7 d23
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#define RW8 d24
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#define RW9 d25
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#define RW10 d26
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#define RW11 d27
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#define RW12 d28
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#define RW13 d29
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#define RW14 d30
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#define RW15 d31
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#define RW01q q8
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#define RW23q q9
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#define RW45q q10
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#define RW67q q11
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#define RW89q q12
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#define RW1011q q13
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#define RW1213q q14
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#define RW1415q q15
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/***********************************************************************
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* ARM assembly implementation of sha512 transform
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***********************************************************************/
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#define rounds2_0_63(ra, rb, rc, rd, re, rf, rg, rh, rw0, rw1, rw01q, rw2, rw23q, rw1415q, rw9, rw10, interleave_op, arg1) \
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/* t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t]; */ \
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vshr.u64 RT2, re, #14; \
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vshl.u64 RT3, re, #64 - 14; \
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interleave_op(arg1); \
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vshr.u64 RT4, re, #18; \
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vshl.u64 RT5, re, #64 - 18; \
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vld1.64 {RT0}, [RK]!; \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, re, #41; \
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vshl.u64 RT5, re, #64 - 41; \
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vadd.u64 RT0, RT0, rw0; \
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veor.64 RT23q, RT23q, RT45q; \
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vmov.64 RT7, re; \
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veor.64 RT1, RT2, RT3; \
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vbsl.64 RT7, rf, rg; \
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\
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vadd.u64 RT1, RT1, rh; \
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vshr.u64 RT2, ra, #28; \
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vshl.u64 RT3, ra, #64 - 28; \
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vadd.u64 RT1, RT1, RT0; \
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vshr.u64 RT4, ra, #34; \
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vshl.u64 RT5, ra, #64 - 34; \
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vadd.u64 RT1, RT1, RT7; \
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\
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/* h = Sum0 (a) + Maj (a, b, c); */ \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, ra, #39; \
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vshl.u64 RT5, ra, #64 - 39; \
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veor.64 RT0, ra, rb; \
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veor.64 RT23q, RT23q, RT45q; \
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vbsl.64 RT0, rc, rb; \
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vadd.u64 rd, rd, RT1; /* d+=t1; */ \
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veor.64 rh, RT2, RT3; \
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\
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/* t1 = g + Sum1 (d) + Ch (d, e, f) + k[t] + w[t]; */ \
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vshr.u64 RT2, rd, #14; \
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vshl.u64 RT3, rd, #64 - 14; \
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vadd.u64 rh, rh, RT0; \
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vshr.u64 RT4, rd, #18; \
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vshl.u64 RT5, rd, #64 - 18; \
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vadd.u64 rh, rh, RT1; /* h+=t1; */ \
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vld1.64 {RT0}, [RK]!; \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, rd, #41; \
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vshl.u64 RT5, rd, #64 - 41; \
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vadd.u64 RT0, RT0, rw1; \
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veor.64 RT23q, RT23q, RT45q; \
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vmov.64 RT7, rd; \
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veor.64 RT1, RT2, RT3; \
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vbsl.64 RT7, re, rf; \
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\
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vadd.u64 RT1, RT1, rg; \
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vshr.u64 RT2, rh, #28; \
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vshl.u64 RT3, rh, #64 - 28; \
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vadd.u64 RT1, RT1, RT0; \
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vshr.u64 RT4, rh, #34; \
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vshl.u64 RT5, rh, #64 - 34; \
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vadd.u64 RT1, RT1, RT7; \
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\
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/* g = Sum0 (h) + Maj (h, a, b); */ \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, rh, #39; \
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vshl.u64 RT5, rh, #64 - 39; \
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veor.64 RT0, rh, ra; \
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veor.64 RT23q, RT23q, RT45q; \
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vbsl.64 RT0, rb, ra; \
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vadd.u64 rc, rc, RT1; /* c+=t1; */ \
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veor.64 rg, RT2, RT3; \
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\
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/* w[0] += S1 (w[14]) + w[9] + S0 (w[1]); */ \
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/* w[1] += S1 (w[15]) + w[10] + S0 (w[2]); */ \
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\
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/**** S0(w[1:2]) */ \
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\
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/* w[0:1] += w[9:10] */ \
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/* RT23q = rw1:rw2 */ \
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vext.u64 RT23q, rw01q, rw23q, #1; \
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vadd.u64 rw0, rw9; \
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vadd.u64 rg, rg, RT0; \
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vadd.u64 rw1, rw10;\
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vadd.u64 rg, rg, RT1; /* g+=t1; */ \
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\
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vshr.u64 RT45q, RT23q, #1; \
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vshl.u64 RT67q, RT23q, #64 - 1; \
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vshr.u64 RT01q, RT23q, #8; \
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veor.u64 RT45q, RT45q, RT67q; \
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vshl.u64 RT67q, RT23q, #64 - 8; \
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veor.u64 RT45q, RT45q, RT01q; \
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vshr.u64 RT01q, RT23q, #7; \
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veor.u64 RT45q, RT45q, RT67q; \
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\
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/**** S1(w[14:15]) */ \
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vshr.u64 RT23q, rw1415q, #6; \
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veor.u64 RT01q, RT01q, RT45q; \
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vshr.u64 RT45q, rw1415q, #19; \
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vshl.u64 RT67q, rw1415q, #64 - 19; \
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veor.u64 RT23q, RT23q, RT45q; \
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vshr.u64 RT45q, rw1415q, #61; \
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veor.u64 RT23q, RT23q, RT67q; \
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vshl.u64 RT67q, rw1415q, #64 - 61; \
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veor.u64 RT23q, RT23q, RT45q; \
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vadd.u64 rw01q, RT01q; /* w[0:1] += S(w[1:2]) */ \
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veor.u64 RT01q, RT23q, RT67q;
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#define vadd_RT01q(rw01q) \
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/* w[0:1] += S(w[14:15]) */ \
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vadd.u64 rw01q, RT01q;
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#define dummy(_) /*_*/
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#define rounds2_64_79(ra, rb, rc, rd, re, rf, rg, rh, rw0, rw1, interleave_op1, arg1, interleave_op2, arg2) \
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/* t1 = h + Sum1 (e) + Ch (e, f, g) + k[t] + w[t]; */ \
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vshr.u64 RT2, re, #14; \
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vshl.u64 RT3, re, #64 - 14; \
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interleave_op1(arg1); \
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vshr.u64 RT4, re, #18; \
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vshl.u64 RT5, re, #64 - 18; \
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interleave_op2(arg2); \
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vld1.64 {RT0}, [RK]!; \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, re, #41; \
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vshl.u64 RT5, re, #64 - 41; \
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vadd.u64 RT0, RT0, rw0; \
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veor.64 RT23q, RT23q, RT45q; \
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vmov.64 RT7, re; \
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veor.64 RT1, RT2, RT3; \
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vbsl.64 RT7, rf, rg; \
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\
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vadd.u64 RT1, RT1, rh; \
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vshr.u64 RT2, ra, #28; \
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vshl.u64 RT3, ra, #64 - 28; \
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vadd.u64 RT1, RT1, RT0; \
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vshr.u64 RT4, ra, #34; \
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vshl.u64 RT5, ra, #64 - 34; \
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vadd.u64 RT1, RT1, RT7; \
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\
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/* h = Sum0 (a) + Maj (a, b, c); */ \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, ra, #39; \
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vshl.u64 RT5, ra, #64 - 39; \
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veor.64 RT0, ra, rb; \
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veor.64 RT23q, RT23q, RT45q; \
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vbsl.64 RT0, rc, rb; \
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vadd.u64 rd, rd, RT1; /* d+=t1; */ \
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veor.64 rh, RT2, RT3; \
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\
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/* t1 = g + Sum1 (d) + Ch (d, e, f) + k[t] + w[t]; */ \
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vshr.u64 RT2, rd, #14; \
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vshl.u64 RT3, rd, #64 - 14; \
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vadd.u64 rh, rh, RT0; \
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vshr.u64 RT4, rd, #18; \
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vshl.u64 RT5, rd, #64 - 18; \
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vadd.u64 rh, rh, RT1; /* h+=t1; */ \
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vld1.64 {RT0}, [RK]!; \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, rd, #41; \
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vshl.u64 RT5, rd, #64 - 41; \
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vadd.u64 RT0, RT0, rw1; \
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veor.64 RT23q, RT23q, RT45q; \
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vmov.64 RT7, rd; \
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veor.64 RT1, RT2, RT3; \
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vbsl.64 RT7, re, rf; \
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\
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vadd.u64 RT1, RT1, rg; \
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vshr.u64 RT2, rh, #28; \
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vshl.u64 RT3, rh, #64 - 28; \
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vadd.u64 RT1, RT1, RT0; \
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vshr.u64 RT4, rh, #34; \
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vshl.u64 RT5, rh, #64 - 34; \
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vadd.u64 RT1, RT1, RT7; \
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\
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/* g = Sum0 (h) + Maj (h, a, b); */ \
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veor.64 RT23q, RT23q, RT45q; \
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vshr.u64 RT4, rh, #39; \
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vshl.u64 RT5, rh, #64 - 39; \
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veor.64 RT0, rh, ra; \
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veor.64 RT23q, RT23q, RT45q; \
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vbsl.64 RT0, rb, ra; \
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vadd.u64 rc, rc, RT1; /* c+=t1; */ \
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veor.64 rg, RT2, RT3;
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#define vadd_rg_RT0(rg) \
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vadd.u64 rg, rg, RT0;
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#define vadd_rg_RT1(rg) \
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vadd.u64 rg, rg, RT1; /* g+=t1; */
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.align 3
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.globl _gcry_sha512_transform_armv7_neon
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.type _gcry_sha512_transform_armv7_neon,%function;
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_gcry_sha512_transform_armv7_neon:
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/* Input:
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* %r0: SHA512_CONTEXT
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* %r1: data
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* %r2: u64 k[] constants
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* %r3: nblks
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*/
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push {%lr};
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mov %lr, #0;
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/* Load context to d0-d7 */
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vld1.64 {RA-RD}, [%r0]!;
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vld1.64 {RE-RH}, [%r0];
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sub %r0, #(4*8);
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/* Load input to w[16], d16-d31 */
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/* NOTE: Assumes that on ARMv7 unaligned accesses are always allowed. */
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vld1.64 {RW0-RW3}, [%r1]!;
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vld1.64 {RW4-RW7}, [%r1]!;
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vld1.64 {RW8-RW11}, [%r1]!;
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vld1.64 {RW12-RW15}, [%r1]!;
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#ifdef __ARMEL__
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/* byteswap */
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vrev64.8 RW01q, RW01q;
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vrev64.8 RW23q, RW23q;
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vrev64.8 RW45q, RW45q;
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vrev64.8 RW67q, RW67q;
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vrev64.8 RW89q, RW89q;
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vrev64.8 RW1011q, RW1011q;
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vrev64.8 RW1213q, RW1213q;
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vrev64.8 RW1415q, RW1415q;
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#endif
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/* EABI says that d8-d15 must be preserved by callee. */
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vpush {RT0-RT7};
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.Loop:
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rounds2_0_63(RA, RB, RC, RD, RE, RF, RG, RH, RW0, RW1, RW01q, RW2, RW23q, RW1415q, RW9, RW10, dummy, _);
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b .Lenter_rounds;
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.Loop_rounds:
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rounds2_0_63(RA, RB, RC, RD, RE, RF, RG, RH, RW0, RW1, RW01q, RW2, RW23q, RW1415q, RW9, RW10, vadd_RT01q, RW1415q);
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.Lenter_rounds:
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rounds2_0_63(RG, RH, RA, RB, RC, RD, RE, RF, RW2, RW3, RW23q, RW4, RW45q, RW01q, RW11, RW12, vadd_RT01q, RW01q);
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rounds2_0_63(RE, RF, RG, RH, RA, RB, RC, RD, RW4, RW5, RW45q, RW6, RW67q, RW23q, RW13, RW14, vadd_RT01q, RW23q);
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rounds2_0_63(RC, RD, RE, RF, RG, RH, RA, RB, RW6, RW7, RW67q, RW8, RW89q, RW45q, RW15, RW0, vadd_RT01q, RW45q);
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rounds2_0_63(RA, RB, RC, RD, RE, RF, RG, RH, RW8, RW9, RW89q, RW10, RW1011q, RW67q, RW1, RW2, vadd_RT01q, RW67q);
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rounds2_0_63(RG, RH, RA, RB, RC, RD, RE, RF, RW10, RW11, RW1011q, RW12, RW1213q, RW89q, RW3, RW4, vadd_RT01q, RW89q);
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add %lr, #16;
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rounds2_0_63(RE, RF, RG, RH, RA, RB, RC, RD, RW12, RW13, RW1213q, RW14, RW1415q, RW1011q, RW5, RW6, vadd_RT01q, RW1011q);
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cmp %lr, #64;
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rounds2_0_63(RC, RD, RE, RF, RG, RH, RA, RB, RW14, RW15, RW1415q, RW0, RW01q, RW1213q, RW7, RW8, vadd_RT01q, RW1213q);
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bne .Loop_rounds;
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subs %r3, #1;
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rounds2_64_79(RA, RB, RC, RD, RE, RF, RG, RH, RW0, RW1, vadd_RT01q, RW1415q, dummy, _);
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rounds2_64_79(RG, RH, RA, RB, RC, RD, RE, RF, RW2, RW3, vadd_rg_RT0, RG, vadd_rg_RT1, RG);
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beq .Lhandle_tail;
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vld1.64 {RW0-RW3}, [%r1]!;
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rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW4, RW5, vadd_rg_RT0, RE, vadd_rg_RT1, RE);
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rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW6, RW7, vadd_rg_RT0, RC, vadd_rg_RT1, RC);
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#ifdef __ARMEL__
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vrev64.8 RW01q, RW01q;
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vrev64.8 RW23q, RW23q;
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#endif
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vld1.64 {RW4-RW7}, [%r1]!;
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rounds2_64_79(RA, RB, RC, RD, RE, RF, RG, RH, RW8, RW9, vadd_rg_RT0, RA, vadd_rg_RT1, RA);
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rounds2_64_79(RG, RH, RA, RB, RC, RD, RE, RF, RW10, RW11, vadd_rg_RT0, RG, vadd_rg_RT1, RG);
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#ifdef __ARMEL__
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vrev64.8 RW45q, RW45q;
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vrev64.8 RW67q, RW67q;
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#endif
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vld1.64 {RW8-RW11}, [%r1]!;
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rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW12, RW13, vadd_rg_RT0, RE, vadd_rg_RT1, RE);
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rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW14, RW15, vadd_rg_RT0, RC, vadd_rg_RT1, RC);
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#ifdef __ARMEL__
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vrev64.8 RW89q, RW89q;
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vrev64.8 RW1011q, RW1011q;
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#endif
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vld1.64 {RW12-RW15}, [%r1]!;
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vadd_rg_RT0(RA);
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vadd_rg_RT1(RA);
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|
|
|
/* Load context */
|
|
vld1.64 {RT0-RT3}, [%r0]!;
|
|
vld1.64 {RT4-RT7}, [%r0];
|
|
sub %r0, #(4*8);
|
|
|
|
#ifdef __ARMEL__
|
|
vrev64.8 RW1213q, RW1213q;
|
|
vrev64.8 RW1415q, RW1415q;
|
|
#endif
|
|
|
|
vadd.u64 RA, RT0;
|
|
vadd.u64 RB, RT1;
|
|
vadd.u64 RC, RT2;
|
|
vadd.u64 RD, RT3;
|
|
vadd.u64 RE, RT4;
|
|
vadd.u64 RF, RT5;
|
|
vadd.u64 RG, RT6;
|
|
vadd.u64 RH, RT7;
|
|
|
|
/* Store the first half of context */
|
|
vst1.64 {RA-RD}, [%r0]!;
|
|
sub RK, $(8*80);
|
|
vst1.64 {RE-RH}, [%r0]; /* Store the last half of context */
|
|
mov %lr, #0;
|
|
sub %r0, #(4*8);
|
|
|
|
b .Loop;
|
|
.ltorg
|
|
|
|
.Lhandle_tail:
|
|
rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW4, RW5, vadd_rg_RT0, RE, vadd_rg_RT1, RE);
|
|
rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW6, RW7, vadd_rg_RT0, RC, vadd_rg_RT1, RC);
|
|
rounds2_64_79(RA, RB, RC, RD, RE, RF, RG, RH, RW8, RW9, vadd_rg_RT0, RA, vadd_rg_RT1, RA);
|
|
rounds2_64_79(RG, RH, RA, RB, RC, RD, RE, RF, RW10, RW11, vadd_rg_RT0, RG, vadd_rg_RT1, RG);
|
|
rounds2_64_79(RE, RF, RG, RH, RA, RB, RC, RD, RW12, RW13, vadd_rg_RT0, RE, vadd_rg_RT1, RE);
|
|
rounds2_64_79(RC, RD, RE, RF, RG, RH, RA, RB, RW14, RW15, vadd_rg_RT0, RC, vadd_rg_RT1, RC);
|
|
|
|
/* Load context to d16-d23 */
|
|
vld1.64 {RW0-RW3}, [%r0]!;
|
|
vadd_rg_RT0(RA);
|
|
vld1.64 {RW4-RW7}, [%r0];
|
|
vadd_rg_RT1(RA);
|
|
sub %r0, #(4*8);
|
|
|
|
vadd.u64 RA, RW0;
|
|
vadd.u64 RB, RW1;
|
|
vadd.u64 RC, RW2;
|
|
vadd.u64 RD, RW3;
|
|
vadd.u64 RE, RW4;
|
|
vadd.u64 RF, RW5;
|
|
vadd.u64 RG, RW6;
|
|
vadd.u64 RH, RW7;
|
|
|
|
/* Store the first half of context */
|
|
vst1.64 {RA-RD}, [%r0]!;
|
|
|
|
/* Clear used registers */
|
|
/* d16-d31 */
|
|
veor.u64 RW01q, RW01q;
|
|
veor.u64 RW23q, RW23q;
|
|
veor.u64 RW45q, RW45q;
|
|
veor.u64 RW67q, RW67q;
|
|
vst1.64 {RE-RH}, [%r0]; /* Store the last half of context */
|
|
veor.u64 RW89q, RW89q;
|
|
veor.u64 RW1011q, RW1011q;
|
|
veor.u64 RW1213q, RW1213q;
|
|
veor.u64 RW1415q, RW1415q;
|
|
/* d8-d15 */
|
|
vpop {RT0-RT7};
|
|
/* d0-d7 (q0-q3) */
|
|
veor.u64 %q0, %q0;
|
|
veor.u64 %q1, %q1;
|
|
veor.u64 %q2, %q2;
|
|
veor.u64 %q3, %q3;
|
|
|
|
pop {%pc};
|
|
.size _gcry_sha512_transform_armv7_neon,.-_gcry_sha512_transform_armv7_neon;
|
|
|
|
#endif
|