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https://github.com/muun/recovery.git
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66 lines
1.2 KiB
ArmAsm
66 lines
1.2 KiB
ArmAsm
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// Copyright (c) 2017 Andreas Auernhammer. All rights reserved.
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// Use of this source code is governed by a license that can be
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// found in the LICENSE file.
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// +build 386, !gccgo, !appengine
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#define ROTL(n, t, v) \
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MOVO v, t; \
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PSLLQ $n, t; \
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PSRLQ $(64-n), v; \
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PXOR t, v
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#define ROUND(v0, v1, v2, v3, t0, t1) \
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PADDQ v1, v0; \
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PADDQ v3, v2; \
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ROTL(13, t0, v1); \
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ROTL(16, t1, v3); \
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PXOR v0, v1; \
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PXOR v2, v3; \
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PSHUFD $0xE1, v0, v0; \
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PADDQ v1, v2; \
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PADDQ v3, v0; \
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ROTL(17, t0, v1); \
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ROTL(21, t1, v3); \
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PXOR v2, v1; \
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PXOR v0, v3; \
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PSHUFD $0xE1, v2, v2
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// coreSSE2(hVal *[4]uint64, msg []byte)
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TEXT ·coreSSE2(SB), 4, $0-16
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MOVL hVal+0(FP), AX
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MOVL msg_base+4(FP), SI
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MOVL msg_len+8(FP), BX
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MOVQ 0(AX), X0
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MOVQ 8(AX), X1
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MOVQ 16(AX), X2
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MOVQ 24(AX), X3
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PXOR X6, X6
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ANDL $-8, BX
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loop:
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MOVQ 0(SI), X6
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PXOR X6, X3
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ROUND(X0, X1, X2, X3, X4, X5)
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ROUND(X0, X1, X2, X3, X4, X5)
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PXOR X6, X0
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LEAL 8(SI), SI
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SUBL $8, BX
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JNZ loop
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MOVQ X0, 0(AX)
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MOVQ X1, 8(AX)
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MOVQ X2, 16(AX)
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MOVQ X3, 24(AX)
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RET
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// func supportsSSE2() bool
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TEXT ·supportsSSE2(SB), 4, $0-1
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MOVL $1, AX
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CPUID
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SHRL $26, DX
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ANDL $1, DX // DX != 0 if support SSE2
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MOVB DX, ret+0(FP)
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RET
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