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OpenCloudOS-Kernel/arch/s390/crypto/chacha-s390.S

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ArmAsm
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Original implementation written by Andy Polyakov, @dot-asm.
* This is an adaptation of the original code for kernel use.
*
* Copyright (C) 2006-2019 CRYPTOGAMS by <appro@openssl.org>. All Rights Reserved.
*/
#include <linux/linkage.h>
#include <asm/nospec-insn.h>
#include <asm/vx-insn.h>
#define SP %r15
#define FRAME (16 * 8 + 4 * 8)
.data
.align 32
.Lsigma:
.long 0x61707865,0x3320646e,0x79622d32,0x6b206574 # endian-neutral
.long 1,0,0,0
.long 2,0,0,0
.long 3,0,0,0
.long 0x03020100,0x07060504,0x0b0a0908,0x0f0e0d0c # byte swap
.long 0,1,2,3
.long 0x61707865,0x61707865,0x61707865,0x61707865 # smashed sigma
.long 0x3320646e,0x3320646e,0x3320646e,0x3320646e
.long 0x79622d32,0x79622d32,0x79622d32,0x79622d32
.long 0x6b206574,0x6b206574,0x6b206574,0x6b206574
.previous
GEN_BR_THUNK %r14
.text
#############################################################################
# void chacha20_vx_4x(u8 *out, counst u8 *inp, size_t len,
# counst u32 *key, const u32 *counter)
#define OUT %r2
#define INP %r3
#define LEN %r4
#define KEY %r5
#define COUNTER %r6
#define BEPERM %v31
#define CTR %v26
#define K0 %v16
#define K1 %v17
#define K2 %v18
#define K3 %v19
#define XA0 %v0
#define XA1 %v1
#define XA2 %v2
#define XA3 %v3
#define XB0 %v4
#define XB1 %v5
#define XB2 %v6
#define XB3 %v7
#define XC0 %v8
#define XC1 %v9
#define XC2 %v10
#define XC3 %v11
#define XD0 %v12
#define XD1 %v13
#define XD2 %v14
#define XD3 %v15
#define XT0 %v27
#define XT1 %v28
#define XT2 %v29
#define XT3 %v30
ENTRY(chacha20_vx_4x)
stmg %r6,%r7,6*8(SP)
larl %r7,.Lsigma
lhi %r0,10
lhi %r1,0
VL K0,0,,%r7 # load sigma
VL K1,0,,KEY # load key
VL K2,16,,KEY
VL K3,0,,COUNTER # load counter
VL BEPERM,0x40,,%r7
VL CTR,0x50,,%r7
VLM XA0,XA3,0x60,%r7,4 # load [smashed] sigma
VREPF XB0,K1,0 # smash the key
VREPF XB1,K1,1
VREPF XB2,K1,2
VREPF XB3,K1,3
VREPF XD0,K3,0
VREPF XD1,K3,1
VREPF XD2,K3,2
VREPF XD3,K3,3
VAF XD0,XD0,CTR
VREPF XC0,K2,0
VREPF XC1,K2,1
VREPF XC2,K2,2
VREPF XC3,K2,3
.Loop_4x:
VAF XA0,XA0,XB0
VX XD0,XD0,XA0
VERLLF XD0,XD0,16
VAF XA1,XA1,XB1
VX XD1,XD1,XA1
VERLLF XD1,XD1,16
VAF XA2,XA2,XB2
VX XD2,XD2,XA2
VERLLF XD2,XD2,16
VAF XA3,XA3,XB3
VX XD3,XD3,XA3
VERLLF XD3,XD3,16
VAF XC0,XC0,XD0
VX XB0,XB0,XC0
VERLLF XB0,XB0,12
VAF XC1,XC1,XD1
VX XB1,XB1,XC1
VERLLF XB1,XB1,12
VAF XC2,XC2,XD2
VX XB2,XB2,XC2
VERLLF XB2,XB2,12
VAF XC3,XC3,XD3
VX XB3,XB3,XC3
VERLLF XB3,XB3,12
VAF XA0,XA0,XB0
VX XD0,XD0,XA0
VERLLF XD0,XD0,8
VAF XA1,XA1,XB1
VX XD1,XD1,XA1
VERLLF XD1,XD1,8
VAF XA2,XA2,XB2
VX XD2,XD2,XA2
VERLLF XD2,XD2,8
VAF XA3,XA3,XB3
VX XD3,XD3,XA3
VERLLF XD3,XD3,8
VAF XC0,XC0,XD0
VX XB0,XB0,XC0
VERLLF XB0,XB0,7
VAF XC1,XC1,XD1
VX XB1,XB1,XC1
VERLLF XB1,XB1,7
VAF XC2,XC2,XD2
VX XB2,XB2,XC2
VERLLF XB2,XB2,7
VAF XC3,XC3,XD3
VX XB3,XB3,XC3
VERLLF XB3,XB3,7
VAF XA0,XA0,XB1
VX XD3,XD3,XA0
VERLLF XD3,XD3,16
VAF XA1,XA1,XB2
VX XD0,XD0,XA1
VERLLF XD0,XD0,16
VAF XA2,XA2,XB3
VX XD1,XD1,XA2
VERLLF XD1,XD1,16
VAF XA3,XA3,XB0
VX XD2,XD2,XA3
VERLLF XD2,XD2,16
VAF XC2,XC2,XD3
VX XB1,XB1,XC2
VERLLF XB1,XB1,12
VAF XC3,XC3,XD0
VX XB2,XB2,XC3
VERLLF XB2,XB2,12
VAF XC0,XC0,XD1
VX XB3,XB3,XC0
VERLLF XB3,XB3,12
VAF XC1,XC1,XD2
VX XB0,XB0,XC1
VERLLF XB0,XB0,12
VAF XA0,XA0,XB1
VX XD3,XD3,XA0
VERLLF XD3,XD3,8
VAF XA1,XA1,XB2
VX XD0,XD0,XA1
VERLLF XD0,XD0,8
VAF XA2,XA2,XB3
VX XD1,XD1,XA2
VERLLF XD1,XD1,8
VAF XA3,XA3,XB0
VX XD2,XD2,XA3
VERLLF XD2,XD2,8
VAF XC2,XC2,XD3
VX XB1,XB1,XC2
VERLLF XB1,XB1,7
VAF XC3,XC3,XD0
VX XB2,XB2,XC3
VERLLF XB2,XB2,7
VAF XC0,XC0,XD1
VX XB3,XB3,XC0
VERLLF XB3,XB3,7
VAF XC1,XC1,XD2
VX XB0,XB0,XC1
VERLLF XB0,XB0,7
brct %r0,.Loop_4x
VAF XD0,XD0,CTR
VMRHF XT0,XA0,XA1 # transpose data
VMRHF XT1,XA2,XA3
VMRLF XT2,XA0,XA1
VMRLF XT3,XA2,XA3
VPDI XA0,XT0,XT1,0b0000
VPDI XA1,XT0,XT1,0b0101
VPDI XA2,XT2,XT3,0b0000
VPDI XA3,XT2,XT3,0b0101
VMRHF XT0,XB0,XB1
VMRHF XT1,XB2,XB3
VMRLF XT2,XB0,XB1
VMRLF XT3,XB2,XB3
VPDI XB0,XT0,XT1,0b0000
VPDI XB1,XT0,XT1,0b0101
VPDI XB2,XT2,XT3,0b0000
VPDI XB3,XT2,XT3,0b0101
VMRHF XT0,XC0,XC1
VMRHF XT1,XC2,XC3
VMRLF XT2,XC0,XC1
VMRLF XT3,XC2,XC3
VPDI XC0,XT0,XT1,0b0000
VPDI XC1,XT0,XT1,0b0101
VPDI XC2,XT2,XT3,0b0000
VPDI XC3,XT2,XT3,0b0101
VMRHF XT0,XD0,XD1
VMRHF XT1,XD2,XD3
VMRLF XT2,XD0,XD1
VMRLF XT3,XD2,XD3
VPDI XD0,XT0,XT1,0b0000
VPDI XD1,XT0,XT1,0b0101
VPDI XD2,XT2,XT3,0b0000
VPDI XD3,XT2,XT3,0b0101
VAF XA0,XA0,K0
VAF XB0,XB0,K1
VAF XC0,XC0,K2
VAF XD0,XD0,K3
VPERM XA0,XA0,XA0,BEPERM
VPERM XB0,XB0,XB0,BEPERM
VPERM XC0,XC0,XC0,BEPERM
VPERM XD0,XD0,XD0,BEPERM
VLM XT0,XT3,0,INP,0
VX XT0,XT0,XA0
VX XT1,XT1,XB0
VX XT2,XT2,XC0
VX XT3,XT3,XD0
VSTM XT0,XT3,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
VAF XA0,XA1,K0
VAF XB0,XB1,K1
VAF XC0,XC1,K2
VAF XD0,XD1,K3
VPERM XA0,XA0,XA0,BEPERM
VPERM XB0,XB0,XB0,BEPERM
VPERM XC0,XC0,XC0,BEPERM
VPERM XD0,XD0,XD0,BEPERM
clgfi LEN,0x40
jl .Ltail_4x
VLM XT0,XT3,0,INP,0
VX XT0,XT0,XA0
VX XT1,XT1,XB0
VX XT2,XT2,XC0
VX XT3,XT3,XD0
VSTM XT0,XT3,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
je .Ldone_4x
VAF XA0,XA2,K0
VAF XB0,XB2,K1
VAF XC0,XC2,K2
VAF XD0,XD2,K3
VPERM XA0,XA0,XA0,BEPERM
VPERM XB0,XB0,XB0,BEPERM
VPERM XC0,XC0,XC0,BEPERM
VPERM XD0,XD0,XD0,BEPERM
clgfi LEN,0x40
jl .Ltail_4x
VLM XT0,XT3,0,INP,0
VX XT0,XT0,XA0
VX XT1,XT1,XB0
VX XT2,XT2,XC0
VX XT3,XT3,XD0
VSTM XT0,XT3,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
je .Ldone_4x
VAF XA0,XA3,K0
VAF XB0,XB3,K1
VAF XC0,XC3,K2
VAF XD0,XD3,K3
VPERM XA0,XA0,XA0,BEPERM
VPERM XB0,XB0,XB0,BEPERM
VPERM XC0,XC0,XC0,BEPERM
VPERM XD0,XD0,XD0,BEPERM
clgfi LEN,0x40
jl .Ltail_4x
VLM XT0,XT3,0,INP,0
VX XT0,XT0,XA0
VX XT1,XT1,XB0
VX XT2,XT2,XC0
VX XT3,XT3,XD0
VSTM XT0,XT3,0,OUT,0
.Ldone_4x:
lmg %r6,%r7,6*8(SP)
BR_EX %r14
.Ltail_4x:
VLR XT0,XC0
VLR XT1,XD0
VST XA0,8*8+0x00,,SP
VST XB0,8*8+0x10,,SP
VST XT0,8*8+0x20,,SP
VST XT1,8*8+0x30,,SP
lghi %r1,0
.Loop_tail_4x:
llgc %r5,0(%r1,INP)
llgc %r6,8*8(%r1,SP)
xr %r6,%r5
stc %r6,0(%r1,OUT)
la %r1,1(%r1)
brct LEN,.Loop_tail_4x
lmg %r6,%r7,6*8(SP)
BR_EX %r14
ENDPROC(chacha20_vx_4x)
#undef OUT
#undef INP
#undef LEN
#undef KEY
#undef COUNTER
#undef BEPERM
#undef K0
#undef K1
#undef K2
#undef K3
#############################################################################
# void chacha20_vx(u8 *out, counst u8 *inp, size_t len,
# counst u32 *key, const u32 *counter)
#define OUT %r2
#define INP %r3
#define LEN %r4
#define KEY %r5
#define COUNTER %r6
#define BEPERM %v31
#define K0 %v27
#define K1 %v24
#define K2 %v25
#define K3 %v26
#define A0 %v0
#define B0 %v1
#define C0 %v2
#define D0 %v3
#define A1 %v4
#define B1 %v5
#define C1 %v6
#define D1 %v7
#define A2 %v8
#define B2 %v9
#define C2 %v10
#define D2 %v11
#define A3 %v12
#define B3 %v13
#define C3 %v14
#define D3 %v15
#define A4 %v16
#define B4 %v17
#define C4 %v18
#define D4 %v19
#define A5 %v20
#define B5 %v21
#define C5 %v22
#define D5 %v23
#define T0 %v27
#define T1 %v28
#define T2 %v29
#define T3 %v30
ENTRY(chacha20_vx)
clgfi LEN,256
jle chacha20_vx_4x
stmg %r6,%r7,6*8(SP)
lghi %r1,-FRAME
lgr %r0,SP
la SP,0(%r1,SP)
stg %r0,0(SP) # back-chain
larl %r7,.Lsigma
lhi %r0,10
VLM K1,K2,0,KEY,0 # load key
VL K3,0,,COUNTER # load counter
VLM K0,BEPERM,0,%r7,4 # load sigma, increments, ...
.Loop_outer_vx:
VLR A0,K0
VLR B0,K1
VLR A1,K0
VLR B1,K1
VLR A2,K0
VLR B2,K1
VLR A3,K0
VLR B3,K1
VLR A4,K0
VLR B4,K1
VLR A5,K0
VLR B5,K1
VLR D0,K3
VAF D1,K3,T1 # K[3]+1
VAF D2,K3,T2 # K[3]+2
VAF D3,K3,T3 # K[3]+3
VAF D4,D2,T2 # K[3]+4
VAF D5,D2,T3 # K[3]+5
VLR C0,K2
VLR C1,K2
VLR C2,K2
VLR C3,K2
VLR C4,K2
VLR C5,K2
VLR T1,D1
VLR T2,D2
VLR T3,D3
.Loop_vx:
VAF A0,A0,B0
VAF A1,A1,B1
VAF A2,A2,B2
VAF A3,A3,B3
VAF A4,A4,B4
VAF A5,A5,B5
VX D0,D0,A0
VX D1,D1,A1
VX D2,D2,A2
VX D3,D3,A3
VX D4,D4,A4
VX D5,D5,A5
VERLLF D0,D0,16
VERLLF D1,D1,16
VERLLF D2,D2,16
VERLLF D3,D3,16
VERLLF D4,D4,16
VERLLF D5,D5,16
VAF C0,C0,D0
VAF C1,C1,D1
VAF C2,C2,D2
VAF C3,C3,D3
VAF C4,C4,D4
VAF C5,C5,D5
VX B0,B0,C0
VX B1,B1,C1
VX B2,B2,C2
VX B3,B3,C3
VX B4,B4,C4
VX B5,B5,C5
VERLLF B0,B0,12
VERLLF B1,B1,12
VERLLF B2,B2,12
VERLLF B3,B3,12
VERLLF B4,B4,12
VERLLF B5,B5,12
VAF A0,A0,B0
VAF A1,A1,B1
VAF A2,A2,B2
VAF A3,A3,B3
VAF A4,A4,B4
VAF A5,A5,B5
VX D0,D0,A0
VX D1,D1,A1
VX D2,D2,A2
VX D3,D3,A3
VX D4,D4,A4
VX D5,D5,A5
VERLLF D0,D0,8
VERLLF D1,D1,8
VERLLF D2,D2,8
VERLLF D3,D3,8
VERLLF D4,D4,8
VERLLF D5,D5,8
VAF C0,C0,D0
VAF C1,C1,D1
VAF C2,C2,D2
VAF C3,C3,D3
VAF C4,C4,D4
VAF C5,C5,D5
VX B0,B0,C0
VX B1,B1,C1
VX B2,B2,C2
VX B3,B3,C3
VX B4,B4,C4
VX B5,B5,C5
VERLLF B0,B0,7
VERLLF B1,B1,7
VERLLF B2,B2,7
VERLLF B3,B3,7
VERLLF B4,B4,7
VERLLF B5,B5,7
VSLDB C0,C0,C0,8
VSLDB C1,C1,C1,8
VSLDB C2,C2,C2,8
VSLDB C3,C3,C3,8
VSLDB C4,C4,C4,8
VSLDB C5,C5,C5,8
VSLDB B0,B0,B0,4
VSLDB B1,B1,B1,4
VSLDB B2,B2,B2,4
VSLDB B3,B3,B3,4
VSLDB B4,B4,B4,4
VSLDB B5,B5,B5,4
VSLDB D0,D0,D0,12
VSLDB D1,D1,D1,12
VSLDB D2,D2,D2,12
VSLDB D3,D3,D3,12
VSLDB D4,D4,D4,12
VSLDB D5,D5,D5,12
VAF A0,A0,B0
VAF A1,A1,B1
VAF A2,A2,B2
VAF A3,A3,B3
VAF A4,A4,B4
VAF A5,A5,B5
VX D0,D0,A0
VX D1,D1,A1
VX D2,D2,A2
VX D3,D3,A3
VX D4,D4,A4
VX D5,D5,A5
VERLLF D0,D0,16
VERLLF D1,D1,16
VERLLF D2,D2,16
VERLLF D3,D3,16
VERLLF D4,D4,16
VERLLF D5,D5,16
VAF C0,C0,D0
VAF C1,C1,D1
VAF C2,C2,D2
VAF C3,C3,D3
VAF C4,C4,D4
VAF C5,C5,D5
VX B0,B0,C0
VX B1,B1,C1
VX B2,B2,C2
VX B3,B3,C3
VX B4,B4,C4
VX B5,B5,C5
VERLLF B0,B0,12
VERLLF B1,B1,12
VERLLF B2,B2,12
VERLLF B3,B3,12
VERLLF B4,B4,12
VERLLF B5,B5,12
VAF A0,A0,B0
VAF A1,A1,B1
VAF A2,A2,B2
VAF A3,A3,B3
VAF A4,A4,B4
VAF A5,A5,B5
VX D0,D0,A0
VX D1,D1,A1
VX D2,D2,A2
VX D3,D3,A3
VX D4,D4,A4
VX D5,D5,A5
VERLLF D0,D0,8
VERLLF D1,D1,8
VERLLF D2,D2,8
VERLLF D3,D3,8
VERLLF D4,D4,8
VERLLF D5,D5,8
VAF C0,C0,D0
VAF C1,C1,D1
VAF C2,C2,D2
VAF C3,C3,D3
VAF C4,C4,D4
VAF C5,C5,D5
VX B0,B0,C0
VX B1,B1,C1
VX B2,B2,C2
VX B3,B3,C3
VX B4,B4,C4
VX B5,B5,C5
VERLLF B0,B0,7
VERLLF B1,B1,7
VERLLF B2,B2,7
VERLLF B3,B3,7
VERLLF B4,B4,7
VERLLF B5,B5,7
VSLDB C0,C0,C0,8
VSLDB C1,C1,C1,8
VSLDB C2,C2,C2,8
VSLDB C3,C3,C3,8
VSLDB C4,C4,C4,8
VSLDB C5,C5,C5,8
VSLDB B0,B0,B0,12
VSLDB B1,B1,B1,12
VSLDB B2,B2,B2,12
VSLDB B3,B3,B3,12
VSLDB B4,B4,B4,12
VSLDB B5,B5,B5,12
VSLDB D0,D0,D0,4
VSLDB D1,D1,D1,4
VSLDB D2,D2,D2,4
VSLDB D3,D3,D3,4
VSLDB D4,D4,D4,4
VSLDB D5,D5,D5,4
brct %r0,.Loop_vx
VAF A0,A0,K0
VAF B0,B0,K1
VAF C0,C0,K2
VAF D0,D0,K3
VAF A1,A1,K0
VAF D1,D1,T1 # +K[3]+1
VPERM A0,A0,A0,BEPERM
VPERM B0,B0,B0,BEPERM
VPERM C0,C0,C0,BEPERM
VPERM D0,D0,D0,BEPERM
clgfi LEN,0x40
jl .Ltail_vx
VAF D2,D2,T2 # +K[3]+2
VAF D3,D3,T3 # +K[3]+3
VLM T0,T3,0,INP,0
VX A0,A0,T0
VX B0,B0,T1
VX C0,C0,T2
VX D0,D0,T3
VLM K0,T3,0,%r7,4 # re-load sigma and increments
VSTM A0,D0,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
je .Ldone_vx
VAF B1,B1,K1
VAF C1,C1,K2
VPERM A0,A1,A1,BEPERM
VPERM B0,B1,B1,BEPERM
VPERM C0,C1,C1,BEPERM
VPERM D0,D1,D1,BEPERM
clgfi LEN,0x40
jl .Ltail_vx
VLM A1,D1,0,INP,0
VX A0,A0,A1
VX B0,B0,B1
VX C0,C0,C1
VX D0,D0,D1
VSTM A0,D0,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
je .Ldone_vx
VAF A2,A2,K0
VAF B2,B2,K1
VAF C2,C2,K2
VPERM A0,A2,A2,BEPERM
VPERM B0,B2,B2,BEPERM
VPERM C0,C2,C2,BEPERM
VPERM D0,D2,D2,BEPERM
clgfi LEN,0x40
jl .Ltail_vx
VLM A1,D1,0,INP,0
VX A0,A0,A1
VX B0,B0,B1
VX C0,C0,C1
VX D0,D0,D1
VSTM A0,D0,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
je .Ldone_vx
VAF A3,A3,K0
VAF B3,B3,K1
VAF C3,C3,K2
VAF D2,K3,T3 # K[3]+3
VPERM A0,A3,A3,BEPERM
VPERM B0,B3,B3,BEPERM
VPERM C0,C3,C3,BEPERM
VPERM D0,D3,D3,BEPERM
clgfi LEN,0x40
jl .Ltail_vx
VAF D3,D2,T1 # K[3]+4
VLM A1,D1,0,INP,0
VX A0,A0,A1
VX B0,B0,B1
VX C0,C0,C1
VX D0,D0,D1
VSTM A0,D0,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
je .Ldone_vx
VAF A4,A4,K0
VAF B4,B4,K1
VAF C4,C4,K2
VAF D4,D4,D3 # +K[3]+4
VAF D3,D3,T1 # K[3]+5
VAF K3,D2,T3 # K[3]+=6
VPERM A0,A4,A4,BEPERM
VPERM B0,B4,B4,BEPERM
VPERM C0,C4,C4,BEPERM
VPERM D0,D4,D4,BEPERM
clgfi LEN,0x40
jl .Ltail_vx
VLM A1,D1,0,INP,0
VX A0,A0,A1
VX B0,B0,B1
VX C0,C0,C1
VX D0,D0,D1
VSTM A0,D0,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
aghi LEN,-0x40
je .Ldone_vx
VAF A5,A5,K0
VAF B5,B5,K1
VAF C5,C5,K2
VAF D5,D5,D3 # +K[3]+5
VPERM A0,A5,A5,BEPERM
VPERM B0,B5,B5,BEPERM
VPERM C0,C5,C5,BEPERM
VPERM D0,D5,D5,BEPERM
clgfi LEN,0x40
jl .Ltail_vx
VLM A1,D1,0,INP,0
VX A0,A0,A1
VX B0,B0,B1
VX C0,C0,C1
VX D0,D0,D1
VSTM A0,D0,0,OUT,0
la INP,0x40(INP)
la OUT,0x40(OUT)
lhi %r0,10
aghi LEN,-0x40
jne .Loop_outer_vx
.Ldone_vx:
lmg %r6,%r7,FRAME+6*8(SP)
la SP,FRAME(SP)
BR_EX %r14
.Ltail_vx:
VSTM A0,D0,8*8,SP,3
lghi %r1,0
.Loop_tail_vx:
llgc %r5,0(%r1,INP)
llgc %r6,8*8(%r1,SP)
xr %r6,%r5
stc %r6,0(%r1,OUT)
la %r1,1(%r1)
brct LEN,.Loop_tail_vx
lmg %r6,%r7,FRAME+6*8(SP)
la SP,FRAME(SP)
BR_EX %r14
ENDPROC(chacha20_vx)
.previous
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