poly1305: drop broken arm assembly
The ARM assembly uses the reserved G register. This started causing frequent crashes due to async preemption, but it was already broken in the presence of signals, including SIGPROF. name old speed new speed delta Chacha20Poly1305/Open-64 2.88MB/s ± 0% 1.85MB/s ± 0% -35.76% (p=0.008 n=6+7) Chacha20Poly1305/Seal-64 3.17MB/s ± 1% 1.97MB/s ± 0% -37.78% (p=0.000 n=10+8) Chacha20Poly1305/Open-64-X 2.41MB/s ± 0% 1.61MB/s ± 0% -33.29% (p=0.000 n=9+9) Chacha20Poly1305/Seal-64-X 2.55MB/s ± 0% 1.64MB/s ± 0% -35.61% (p=0.000 n=10+9) Chacha20Poly1305/Open-1350 8.43MB/s ± 0% 4.15MB/s ± 0% -50.78% (p=0.000 n=10+10) Chacha20Poly1305/Seal-1350 8.55MB/s ± 0% 4.18MB/s ± 0% -51.12% (p=0.000 n=9+9) Chacha20Poly1305/Open-1350-X 8.16MB/s ± 0% 4.06MB/s ± 0% -50.18% (p=0.000 n=10+10) Chacha20Poly1305/Seal-1350-X 8.24MB/s ± 1% 4.08MB/s ± 1% -50.53% (p=0.000 n=10+10) Chacha20Poly1305/Open-8192 9.73MB/s ± 1% 4.56MB/s ± 0% -53.15% (p=0.000 n=9+10) Chacha20Poly1305/Seal-8192 9.57MB/s ± 0% 4.52MB/s ± 0% -52.77% (p=0.000 n=9+9) Chacha20Poly1305/Open-8192-X 9.65MB/s ± 0% 4.54MB/s ± 0% -52.95% (p=0.000 n=10+7) Chacha20Poly1305/Seal-8192-X 9.47MB/s ± 1% 4.50MB/s ± 0% -52.50% (p=0.000 n=10+9) Fixes golang/go#35511 Change-Id: I5e5ca3a0499f04c5fece5bc669a417e32d2656c6 Reviewed-on: https://go-review.googlesource.com/c/crypto/+/213880 Run-TryBot: Filippo Valsorda <filippo@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Filippo Valsorda
Родитель
5d647ca157
Коммит
61a87790db
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@ -1,19 +0,0 @@
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build arm,!gccgo,!appengine,!nacl
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package poly1305
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// poly1305_auth_armv6 is implemented in sum_arm.s
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//go:noescape
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func poly1305_auth_armv6(out *[16]byte, m *byte, mlen uint32, key *[32]byte)
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func sum(out *[16]byte, m []byte, key *[32]byte) {
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var mPtr *byte
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if len(m) > 0 {
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mPtr = &m[0]
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}
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poly1305_auth_armv6(out, mPtr, uint32(len(m)), key)
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}
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@ -1,427 +0,0 @@
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build arm,!gccgo,!appengine,!nacl
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#include "textflag.h"
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// This code was translated into a form compatible with 5a from the public
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// domain source by Andrew Moon: github.com/floodyberry/poly1305-opt/blob/master/app/extensions/poly1305.
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DATA ·poly1305_init_constants_armv6<>+0x00(SB)/4, $0x3ffffff
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DATA ·poly1305_init_constants_armv6<>+0x04(SB)/4, $0x3ffff03
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DATA ·poly1305_init_constants_armv6<>+0x08(SB)/4, $0x3ffc0ff
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DATA ·poly1305_init_constants_armv6<>+0x0c(SB)/4, $0x3f03fff
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DATA ·poly1305_init_constants_armv6<>+0x10(SB)/4, $0x00fffff
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GLOBL ·poly1305_init_constants_armv6<>(SB), 8, $20
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// Warning: the linker may use R11 to synthesize certain instructions. Please
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// take care and verify that no synthetic instructions use it.
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TEXT poly1305_init_ext_armv6<>(SB), NOSPLIT, $0
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// Needs 16 bytes of stack and 64 bytes of space pointed to by R0. (It
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// might look like it's only 60 bytes of space but the final four bytes
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// will be written by another function.) We need to skip over four
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// bytes of stack because that's saving the value of 'g'.
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ADD $4, R13, R8
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MOVM.IB [R4-R7], (R8)
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MOVM.IA.W (R1), [R2-R5]
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MOVW $·poly1305_init_constants_armv6<>(SB), R7
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MOVW R2, R8
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MOVW R2>>26, R9
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MOVW R3>>20, g
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MOVW R4>>14, R11
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MOVW R5>>8, R12
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ORR R3<<6, R9, R9
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ORR R4<<12, g, g
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ORR R5<<18, R11, R11
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MOVM.IA (R7), [R2-R6]
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AND R8, R2, R2
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AND R9, R3, R3
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AND g, R4, R4
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AND R11, R5, R5
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AND R12, R6, R6
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MOVM.IA.W [R2-R6], (R0)
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EOR R2, R2, R2
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EOR R3, R3, R3
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EOR R4, R4, R4
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EOR R5, R5, R5
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EOR R6, R6, R6
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MOVM.IA.W [R2-R6], (R0)
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MOVM.IA.W (R1), [R2-R5]
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MOVM.IA [R2-R6], (R0)
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ADD $20, R13, R0
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MOVM.DA (R0), [R4-R7]
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RET
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#define MOVW_UNALIGNED(Rsrc, Rdst, Rtmp, offset) \
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MOVBU (offset+0)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+0)(Rdst); \
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MOVBU (offset+1)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+1)(Rdst); \
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MOVBU (offset+2)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+2)(Rdst); \
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MOVBU (offset+3)(Rsrc), Rtmp; \
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MOVBU Rtmp, (offset+3)(Rdst)
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TEXT poly1305_blocks_armv6<>(SB), NOSPLIT, $0
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// Needs 24 bytes of stack for saved registers and then 88 bytes of
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// scratch space after that. We assume that 24 bytes at (R13) have
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// already been used: four bytes for the link register saved in the
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// prelude of poly1305_auth_armv6, four bytes for saving the value of g
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// in that function and 16 bytes of scratch space used around
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// poly1305_finish_ext_armv6_skip1.
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ADD $24, R13, R12
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MOVM.IB [R4-R8, R14], (R12)
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MOVW R0, 88(R13)
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MOVW R1, 92(R13)
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MOVW R2, 96(R13)
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MOVW R1, R14
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MOVW R2, R12
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MOVW 56(R0), R8
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WORD $0xe1180008 // TST R8, R8 not working see issue 5921
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EOR R6, R6, R6
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MOVW.EQ $(1<<24), R6
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MOVW R6, 84(R13)
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ADD $116, R13, g
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MOVM.IA (R0), [R0-R9]
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MOVM.IA [R0-R4], (g)
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CMP $16, R12
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BLO poly1305_blocks_armv6_done
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poly1305_blocks_armv6_mainloop:
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WORD $0xe31e0003 // TST R14, #3 not working see issue 5921
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BEQ poly1305_blocks_armv6_mainloop_aligned
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ADD $100, R13, g
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MOVW_UNALIGNED(R14, g, R0, 0)
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MOVW_UNALIGNED(R14, g, R0, 4)
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MOVW_UNALIGNED(R14, g, R0, 8)
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MOVW_UNALIGNED(R14, g, R0, 12)
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MOVM.IA (g), [R0-R3]
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ADD $16, R14
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B poly1305_blocks_armv6_mainloop_loaded
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poly1305_blocks_armv6_mainloop_aligned:
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MOVM.IA.W (R14), [R0-R3]
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poly1305_blocks_armv6_mainloop_loaded:
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MOVW R0>>26, g
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MOVW R1>>20, R11
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MOVW R2>>14, R12
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MOVW R14, 92(R13)
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MOVW R3>>8, R4
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ORR R1<<6, g, g
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ORR R2<<12, R11, R11
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ORR R3<<18, R12, R12
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BIC $0xfc000000, R0, R0
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BIC $0xfc000000, g, g
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MOVW 84(R13), R3
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BIC $0xfc000000, R11, R11
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BIC $0xfc000000, R12, R12
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ADD R0, R5, R5
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ADD g, R6, R6
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ORR R3, R4, R4
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ADD R11, R7, R7
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ADD $116, R13, R14
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ADD R12, R8, R8
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ADD R4, R9, R9
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MOVM.IA (R14), [R0-R4]
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MULLU R4, R5, (R11, g)
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MULLU R3, R5, (R14, R12)
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MULALU R3, R6, (R11, g)
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MULALU R2, R6, (R14, R12)
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MULALU R2, R7, (R11, g)
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MULALU R1, R7, (R14, R12)
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ADD R4<<2, R4, R4
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ADD R3<<2, R3, R3
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MULALU R1, R8, (R11, g)
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MULALU R0, R8, (R14, R12)
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MULALU R0, R9, (R11, g)
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MULALU R4, R9, (R14, R12)
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MOVW g, 76(R13)
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MOVW R11, 80(R13)
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MOVW R12, 68(R13)
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MOVW R14, 72(R13)
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MULLU R2, R5, (R11, g)
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MULLU R1, R5, (R14, R12)
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MULALU R1, R6, (R11, g)
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MULALU R0, R6, (R14, R12)
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MULALU R0, R7, (R11, g)
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MULALU R4, R7, (R14, R12)
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ADD R2<<2, R2, R2
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ADD R1<<2, R1, R1
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MULALU R4, R8, (R11, g)
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MULALU R3, R8, (R14, R12)
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MULALU R3, R9, (R11, g)
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MULALU R2, R9, (R14, R12)
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MOVW g, 60(R13)
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MOVW R11, 64(R13)
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MOVW R12, 52(R13)
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MOVW R14, 56(R13)
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MULLU R0, R5, (R11, g)
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MULALU R4, R6, (R11, g)
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MULALU R3, R7, (R11, g)
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MULALU R2, R8, (R11, g)
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MULALU R1, R9, (R11, g)
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ADD $52, R13, R0
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MOVM.IA (R0), [R0-R7]
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MOVW g>>26, R12
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MOVW R4>>26, R14
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ORR R11<<6, R12, R12
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ORR R5<<6, R14, R14
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BIC $0xfc000000, g, g
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BIC $0xfc000000, R4, R4
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ADD.S R12, R0, R0
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ADC $0, R1, R1
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ADD.S R14, R6, R6
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ADC $0, R7, R7
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MOVW R0>>26, R12
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MOVW R6>>26, R14
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ORR R1<<6, R12, R12
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ORR R7<<6, R14, R14
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BIC $0xfc000000, R0, R0
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BIC $0xfc000000, R6, R6
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ADD R14<<2, R14, R14
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ADD.S R12, R2, R2
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ADC $0, R3, R3
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ADD R14, g, g
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MOVW R2>>26, R12
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MOVW g>>26, R14
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ORR R3<<6, R12, R12
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BIC $0xfc000000, g, R5
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BIC $0xfc000000, R2, R7
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ADD R12, R4, R4
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ADD R14, R0, R0
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MOVW R4>>26, R12
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BIC $0xfc000000, R4, R8
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ADD R12, R6, R9
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MOVW 96(R13), R12
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MOVW 92(R13), R14
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MOVW R0, R6
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CMP $32, R12
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SUB $16, R12, R12
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MOVW R12, 96(R13)
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BHS poly1305_blocks_armv6_mainloop
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poly1305_blocks_armv6_done:
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MOVW 88(R13), R12
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MOVW R5, 20(R12)
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MOVW R6, 24(R12)
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MOVW R7, 28(R12)
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MOVW R8, 32(R12)
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MOVW R9, 36(R12)
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ADD $48, R13, R0
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MOVM.DA (R0), [R4-R8, R14]
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RET
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#define MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp) \
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MOVBU.P 1(Rsrc), Rtmp; \
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MOVBU.P Rtmp, 1(Rdst); \
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MOVBU.P 1(Rsrc), Rtmp; \
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MOVBU.P Rtmp, 1(Rdst)
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#define MOVWP_UNALIGNED(Rsrc, Rdst, Rtmp) \
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MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp); \
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MOVHUP_UNALIGNED(Rsrc, Rdst, Rtmp)
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// func poly1305_auth_armv6(out *[16]byte, m *byte, mlen uint32, key *[32]key)
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TEXT ·poly1305_auth_armv6(SB), $196-16
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// The value 196, just above, is the sum of 64 (the size of the context
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// structure) and 132 (the amount of stack needed).
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//
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// At this point, the stack pointer (R13) has been moved down. It
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// points to the saved link register and there's 196 bytes of free
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// space above it.
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//
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// The stack for this function looks like:
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//
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// +---------------------
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// |
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// | 64 bytes of context structure
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// |
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// +---------------------
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// |
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// | 112 bytes for poly1305_blocks_armv6
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// |
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// +---------------------
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// | 16 bytes of final block, constructed at
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// | poly1305_finish_ext_armv6_skip8
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// +---------------------
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// | four bytes of saved 'g'
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// +---------------------
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// | lr, saved by prelude <- R13 points here
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// +---------------------
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MOVW g, 4(R13)
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MOVW out+0(FP), R4
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MOVW m+4(FP), R5
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MOVW mlen+8(FP), R6
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MOVW key+12(FP), R7
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ADD $136, R13, R0 // 136 = 4 + 4 + 16 + 112
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MOVW R7, R1
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// poly1305_init_ext_armv6 will write to the stack from R13+4, but
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// that's ok because none of the other values have been written yet.
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BL poly1305_init_ext_armv6<>(SB)
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BIC.S $15, R6, R2
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BEQ poly1305_auth_armv6_noblocks
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ADD $136, R13, R0
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MOVW R5, R1
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ADD R2, R5, R5
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SUB R2, R6, R6
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BL poly1305_blocks_armv6<>(SB)
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poly1305_auth_armv6_noblocks:
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ADD $136, R13, R0
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MOVW R5, R1
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MOVW R6, R2
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MOVW R4, R3
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MOVW R0, R5
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MOVW R1, R6
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MOVW R2, R7
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MOVW R3, R8
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AND.S R2, R2, R2
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BEQ poly1305_finish_ext_armv6_noremaining
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EOR R0, R0
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ADD $8, R13, R9 // 8 = offset to 16 byte scratch space
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MOVW R0, (R9)
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MOVW R0, 4(R9)
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MOVW R0, 8(R9)
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MOVW R0, 12(R9)
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WORD $0xe3110003 // TST R1, #3 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_aligned
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WORD $0xe3120008 // TST R2, #8 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip8
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MOVWP_UNALIGNED(R1, R9, g)
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MOVWP_UNALIGNED(R1, R9, g)
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poly1305_finish_ext_armv6_skip8:
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WORD $0xe3120004 // TST $4, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip4
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MOVWP_UNALIGNED(R1, R9, g)
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poly1305_finish_ext_armv6_skip4:
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WORD $0xe3120002 // TST $2, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip2
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MOVHUP_UNALIGNED(R1, R9, g)
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B poly1305_finish_ext_armv6_skip2
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poly1305_finish_ext_armv6_aligned:
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WORD $0xe3120008 // TST R2, #8 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip8_aligned
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MOVM.IA.W (R1), [g-R11]
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MOVM.IA.W [g-R11], (R9)
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poly1305_finish_ext_armv6_skip8_aligned:
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WORD $0xe3120004 // TST $4, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip4_aligned
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MOVW.P 4(R1), g
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MOVW.P g, 4(R9)
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poly1305_finish_ext_armv6_skip4_aligned:
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WORD $0xe3120002 // TST $2, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip2
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MOVHU.P 2(R1), g
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MOVH.P g, 2(R9)
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poly1305_finish_ext_armv6_skip2:
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WORD $0xe3120001 // TST $1, R2 not working see issue 5921
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BEQ poly1305_finish_ext_armv6_skip1
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MOVBU.P 1(R1), g
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MOVBU.P g, 1(R9)
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poly1305_finish_ext_armv6_skip1:
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MOVW $1, R11
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MOVBU R11, 0(R9)
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MOVW R11, 56(R5)
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MOVW R5, R0
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ADD $8, R13, R1
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MOVW $16, R2
|
||||
BL poly1305_blocks_armv6<>(SB)
|
||||
|
||||
poly1305_finish_ext_armv6_noremaining:
|
||||
MOVW 20(R5), R0
|
||||
MOVW 24(R5), R1
|
||||
MOVW 28(R5), R2
|
||||
MOVW 32(R5), R3
|
||||
MOVW 36(R5), R4
|
||||
MOVW R4>>26, R12
|
||||
BIC $0xfc000000, R4, R4
|
||||
ADD R12<<2, R12, R12
|
||||
ADD R12, R0, R0
|
||||
MOVW R0>>26, R12
|
||||
BIC $0xfc000000, R0, R0
|
||||
ADD R12, R1, R1
|
||||
MOVW R1>>26, R12
|
||||
BIC $0xfc000000, R1, R1
|
||||
ADD R12, R2, R2
|
||||
MOVW R2>>26, R12
|
||||
BIC $0xfc000000, R2, R2
|
||||
ADD R12, R3, R3
|
||||
MOVW R3>>26, R12
|
||||
BIC $0xfc000000, R3, R3
|
||||
ADD R12, R4, R4
|
||||
ADD $5, R0, R6
|
||||
MOVW R6>>26, R12
|
||||
BIC $0xfc000000, R6, R6
|
||||
ADD R12, R1, R7
|
||||
MOVW R7>>26, R12
|
||||
BIC $0xfc000000, R7, R7
|
||||
ADD R12, R2, g
|
||||
MOVW g>>26, R12
|
||||
BIC $0xfc000000, g, g
|
||||
ADD R12, R3, R11
|
||||
MOVW $-(1<<26), R12
|
||||
ADD R11>>26, R12, R12
|
||||
BIC $0xfc000000, R11, R11
|
||||
ADD R12, R4, R9
|
||||
MOVW R9>>31, R12
|
||||
SUB $1, R12
|
||||
AND R12, R6, R6
|
||||
AND R12, R7, R7
|
||||
AND R12, g, g
|
||||
AND R12, R11, R11
|
||||
AND R12, R9, R9
|
||||
MVN R12, R12
|
||||
AND R12, R0, R0
|
||||
AND R12, R1, R1
|
||||
AND R12, R2, R2
|
||||
AND R12, R3, R3
|
||||
AND R12, R4, R4
|
||||
ORR R6, R0, R0
|
||||
ORR R7, R1, R1
|
||||
ORR g, R2, R2
|
||||
ORR R11, R3, R3
|
||||
ORR R9, R4, R4
|
||||
ORR R1<<26, R0, R0
|
||||
MOVW R1>>6, R1
|
||||
ORR R2<<20, R1, R1
|
||||
MOVW R2>>12, R2
|
||||
ORR R3<<14, R2, R2
|
||||
MOVW R3>>18, R3
|
||||
ORR R4<<8, R3, R3
|
||||
MOVW 40(R5), R6
|
||||
MOVW 44(R5), R7
|
||||
MOVW 48(R5), g
|
||||
MOVW 52(R5), R11
|
||||
ADD.S R6, R0, R0
|
||||
ADC.S R7, R1, R1
|
||||
ADC.S g, R2, R2
|
||||
ADC.S R11, R3, R3
|
||||
MOVM.IA [R0-R3], (R8)
|
||||
MOVW R5, R12
|
||||
EOR R0, R0, R0
|
||||
EOR R1, R1, R1
|
||||
EOR R2, R2, R2
|
||||
EOR R3, R3, R3
|
||||
EOR R4, R4, R4
|
||||
EOR R5, R5, R5
|
||||
EOR R6, R6, R6
|
||||
EOR R7, R7, R7
|
||||
MOVM.IA.W [R0-R7], (R12)
|
||||
MOVM.IA [R0-R7], (R12)
|
||||
MOVW 4(R13), g
|
||||
RET
|
||||
|
|
@ -2,7 +2,7 @@
|
|||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build s390x,!go1.11 !arm,!amd64,!s390x,!ppc64le gccgo appengine nacl
|
||||
// +build s390x,!go1.11 !amd64,!s390x,!ppc64le gccgo appengine nacl
|
||||
|
||||
package poly1305
|
||||
|
||||
|
|
|
|||
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