mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 14:38:02 +07:00
221e00d1fc
Add explicit RETs to the tail calls of AEGIS and MORUS crypto algorithms
otherwise they run into INT3 padding due to
("x86/asm: Pad assembly functions with INT3 instructions")
leading to spurious debug exceptions.
Mike Galbraith <efault@gmx.de> took care of all the remaining callsites.
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
616 lines
12 KiB
ArmAsm
616 lines
12 KiB
ArmAsm
/*
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* SSE2 implementation of MORUS-640
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*
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* Copyright (c) 2017-2018 Ondrej Mosnacek <omosnacek@gmail.com>
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* Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <linux/linkage.h>
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#include <asm/frame.h>
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#define SHUFFLE_MASK(i0, i1, i2, i3) \
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(i0 | (i1 << 2) | (i2 << 4) | (i3 << 6))
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#define MASK1 SHUFFLE_MASK(3, 0, 1, 2)
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#define MASK2 SHUFFLE_MASK(2, 3, 0, 1)
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#define MASK3 SHUFFLE_MASK(1, 2, 3, 0)
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#define STATE0 %xmm0
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#define STATE1 %xmm1
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#define STATE2 %xmm2
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#define STATE3 %xmm3
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#define STATE4 %xmm4
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#define KEY %xmm5
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#define MSG %xmm5
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#define T0 %xmm6
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#define T1 %xmm7
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.section .rodata.cst16.morus640_const, "aM", @progbits, 32
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.align 16
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.Lmorus640_const_0:
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.byte 0x00, 0x01, 0x01, 0x02, 0x03, 0x05, 0x08, 0x0d
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.byte 0x15, 0x22, 0x37, 0x59, 0x90, 0xe9, 0x79, 0x62
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.Lmorus640_const_1:
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.byte 0xdb, 0x3d, 0x18, 0x55, 0x6d, 0xc2, 0x2f, 0xf1
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.byte 0x20, 0x11, 0x31, 0x42, 0x73, 0xb5, 0x28, 0xdd
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.section .rodata.cst16.morus640_counter, "aM", @progbits, 16
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.align 16
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.Lmorus640_counter:
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.byte 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07
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.byte 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
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.text
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.macro morus640_round s0, s1, s2, s3, s4, b, w
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movdqa \s1, T0
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pand \s2, T0
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pxor T0, \s0
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pxor \s3, \s0
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movdqa \s0, T0
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pslld $\b, T0
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psrld $(32 - \b), \s0
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pxor T0, \s0
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pshufd $\w, \s3, \s3
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.endm
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/*
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* __morus640_update: internal ABI
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* input:
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* STATE[0-4] - input state
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* MSG - message block
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* output:
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* STATE[0-4] - output state
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* changed:
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* T0
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*/
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__morus640_update:
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morus640_round STATE0, STATE1, STATE2, STATE3, STATE4, 5, MASK1
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pxor MSG, STATE1
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morus640_round STATE1, STATE2, STATE3, STATE4, STATE0, 31, MASK2
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pxor MSG, STATE2
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morus640_round STATE2, STATE3, STATE4, STATE0, STATE1, 7, MASK3
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pxor MSG, STATE3
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morus640_round STATE3, STATE4, STATE0, STATE1, STATE2, 22, MASK2
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pxor MSG, STATE4
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morus640_round STATE4, STATE0, STATE1, STATE2, STATE3, 13, MASK1
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ret
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ENDPROC(__morus640_update)
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/*
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* __morus640_update_zero: internal ABI
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* input:
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* STATE[0-4] - input state
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* output:
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* STATE[0-4] - output state
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* changed:
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* T0
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*/
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__morus640_update_zero:
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morus640_round STATE0, STATE1, STATE2, STATE3, STATE4, 5, MASK1
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morus640_round STATE1, STATE2, STATE3, STATE4, STATE0, 31, MASK2
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morus640_round STATE2, STATE3, STATE4, STATE0, STATE1, 7, MASK3
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morus640_round STATE3, STATE4, STATE0, STATE1, STATE2, 22, MASK2
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morus640_round STATE4, STATE0, STATE1, STATE2, STATE3, 13, MASK1
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ret
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ENDPROC(__morus640_update_zero)
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/*
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* __load_partial: internal ABI
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* input:
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* %rsi - src
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* %rcx - bytes
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* output:
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* MSG - message block
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* changed:
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* T0
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* %r8
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* %r9
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*/
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__load_partial:
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xor %r9, %r9
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pxor MSG, MSG
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mov %rcx, %r8
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and $0x1, %r8
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jz .Lld_partial_1
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mov %rcx, %r8
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and $0x1E, %r8
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add %rsi, %r8
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mov (%r8), %r9b
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.Lld_partial_1:
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mov %rcx, %r8
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and $0x2, %r8
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jz .Lld_partial_2
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mov %rcx, %r8
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and $0x1C, %r8
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add %rsi, %r8
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shl $16, %r9
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mov (%r8), %r9w
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.Lld_partial_2:
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mov %rcx, %r8
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and $0x4, %r8
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jz .Lld_partial_4
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mov %rcx, %r8
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and $0x18, %r8
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add %rsi, %r8
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shl $32, %r9
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mov (%r8), %r8d
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xor %r8, %r9
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.Lld_partial_4:
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movq %r9, MSG
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mov %rcx, %r8
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and $0x8, %r8
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jz .Lld_partial_8
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mov %rcx, %r8
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and $0x10, %r8
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add %rsi, %r8
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pslldq $8, MSG
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movq (%r8), T0
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pxor T0, MSG
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.Lld_partial_8:
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ret
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ENDPROC(__load_partial)
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/*
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* __store_partial: internal ABI
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* input:
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* %rdx - dst
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* %rcx - bytes
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* output:
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* T0 - message block
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* changed:
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* %r8
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* %r9
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* %r10
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*/
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__store_partial:
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mov %rcx, %r8
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mov %rdx, %r9
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movq T0, %r10
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cmp $8, %r8
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jl .Lst_partial_8
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mov %r10, (%r9)
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psrldq $8, T0
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movq T0, %r10
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sub $8, %r8
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add $8, %r9
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.Lst_partial_8:
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cmp $4, %r8
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jl .Lst_partial_4
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mov %r10d, (%r9)
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shr $32, %r10
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sub $4, %r8
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add $4, %r9
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.Lst_partial_4:
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cmp $2, %r8
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jl .Lst_partial_2
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mov %r10w, (%r9)
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shr $16, %r10
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sub $2, %r8
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add $2, %r9
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.Lst_partial_2:
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cmp $1, %r8
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jl .Lst_partial_1
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mov %r10b, (%r9)
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.Lst_partial_1:
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ret
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ENDPROC(__store_partial)
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/*
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* void crypto_morus640_sse2_init(void *state, const void *key, const void *iv);
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*/
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ENTRY(crypto_morus640_sse2_init)
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FRAME_BEGIN
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/* load IV: */
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movdqu (%rdx), STATE0
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/* load key: */
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movdqu (%rsi), KEY
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movdqa KEY, STATE1
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/* load all ones: */
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pcmpeqd STATE2, STATE2
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/* load the constants: */
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movdqa .Lmorus640_const_0, STATE3
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movdqa .Lmorus640_const_1, STATE4
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/* update 16 times with zero: */
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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call __morus640_update_zero
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/* xor-in the key again after updates: */
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pxor KEY, STATE1
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/* store the state: */
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movdqu STATE0, (0 * 16)(%rdi)
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movdqu STATE1, (1 * 16)(%rdi)
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movdqu STATE2, (2 * 16)(%rdi)
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movdqu STATE3, (3 * 16)(%rdi)
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movdqu STATE4, (4 * 16)(%rdi)
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FRAME_END
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ret
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ENDPROC(crypto_morus640_sse2_init)
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/*
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* void crypto_morus640_sse2_ad(void *state, const void *data,
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* unsigned int length);
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*/
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ENTRY(crypto_morus640_sse2_ad)
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FRAME_BEGIN
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cmp $16, %rdx
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jb .Lad_out
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/* load the state: */
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movdqu (0 * 16)(%rdi), STATE0
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movdqu (1 * 16)(%rdi), STATE1
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movdqu (2 * 16)(%rdi), STATE2
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movdqu (3 * 16)(%rdi), STATE3
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movdqu (4 * 16)(%rdi), STATE4
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mov %rsi, %r8
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and $0xF, %r8
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jnz .Lad_u_loop
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.align 4
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.Lad_a_loop:
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movdqa (%rsi), MSG
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call __morus640_update
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sub $16, %rdx
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add $16, %rsi
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cmp $16, %rdx
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jge .Lad_a_loop
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jmp .Lad_cont
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.align 4
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.Lad_u_loop:
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movdqu (%rsi), MSG
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call __morus640_update
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sub $16, %rdx
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add $16, %rsi
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cmp $16, %rdx
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jge .Lad_u_loop
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.Lad_cont:
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/* store the state: */
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movdqu STATE0, (0 * 16)(%rdi)
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movdqu STATE1, (1 * 16)(%rdi)
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movdqu STATE2, (2 * 16)(%rdi)
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movdqu STATE3, (3 * 16)(%rdi)
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movdqu STATE4, (4 * 16)(%rdi)
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.Lad_out:
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FRAME_END
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ret
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ENDPROC(crypto_morus640_sse2_ad)
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/*
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* void crypto_morus640_sse2_enc(void *state, const void *src, void *dst,
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* unsigned int length);
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*/
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ENTRY(crypto_morus640_sse2_enc)
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FRAME_BEGIN
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cmp $16, %rcx
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jb .Lenc_out
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/* load the state: */
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movdqu (0 * 16)(%rdi), STATE0
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movdqu (1 * 16)(%rdi), STATE1
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movdqu (2 * 16)(%rdi), STATE2
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movdqu (3 * 16)(%rdi), STATE3
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movdqu (4 * 16)(%rdi), STATE4
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mov %rsi, %r8
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or %rdx, %r8
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and $0xF, %r8
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jnz .Lenc_u_loop
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.align 4
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.Lenc_a_loop:
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movdqa (%rsi), MSG
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movdqa MSG, T0
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pxor STATE0, T0
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pshufd $MASK3, STATE1, T1
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pxor T1, T0
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movdqa STATE2, T1
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pand STATE3, T1
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pxor T1, T0
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movdqa T0, (%rdx)
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call __morus640_update
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sub $16, %rcx
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add $16, %rsi
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add $16, %rdx
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cmp $16, %rcx
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jge .Lenc_a_loop
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jmp .Lenc_cont
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.align 4
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.Lenc_u_loop:
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movdqu (%rsi), MSG
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movdqa MSG, T0
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pxor STATE0, T0
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pshufd $MASK3, STATE1, T1
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pxor T1, T0
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movdqa STATE2, T1
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pand STATE3, T1
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pxor T1, T0
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movdqu T0, (%rdx)
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call __morus640_update
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sub $16, %rcx
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add $16, %rsi
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add $16, %rdx
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cmp $16, %rcx
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jge .Lenc_u_loop
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.Lenc_cont:
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/* store the state: */
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movdqu STATE0, (0 * 16)(%rdi)
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movdqu STATE1, (1 * 16)(%rdi)
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movdqu STATE2, (2 * 16)(%rdi)
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movdqu STATE3, (3 * 16)(%rdi)
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movdqu STATE4, (4 * 16)(%rdi)
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.Lenc_out:
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FRAME_END
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ret
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ENDPROC(crypto_morus640_sse2_enc)
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/*
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* void crypto_morus640_sse2_enc_tail(void *state, const void *src, void *dst,
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* unsigned int length);
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*/
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ENTRY(crypto_morus640_sse2_enc_tail)
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FRAME_BEGIN
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/* load the state: */
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movdqu (0 * 16)(%rdi), STATE0
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movdqu (1 * 16)(%rdi), STATE1
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movdqu (2 * 16)(%rdi), STATE2
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movdqu (3 * 16)(%rdi), STATE3
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movdqu (4 * 16)(%rdi), STATE4
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/* encrypt message: */
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call __load_partial
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movdqa MSG, T0
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pxor STATE0, T0
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pshufd $MASK3, STATE1, T1
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pxor T1, T0
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movdqa STATE2, T1
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pand STATE3, T1
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pxor T1, T0
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call __store_partial
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call __morus640_update
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/* store the state: */
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movdqu STATE0, (0 * 16)(%rdi)
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movdqu STATE1, (1 * 16)(%rdi)
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movdqu STATE2, (2 * 16)(%rdi)
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movdqu STATE3, (3 * 16)(%rdi)
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movdqu STATE4, (4 * 16)(%rdi)
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FRAME_END
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ret
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ENDPROC(crypto_morus640_sse2_enc_tail)
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/*
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* void crypto_morus640_sse2_dec(void *state, const void *src, void *dst,
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* unsigned int length);
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*/
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ENTRY(crypto_morus640_sse2_dec)
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FRAME_BEGIN
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cmp $16, %rcx
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jb .Ldec_out
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/* load the state: */
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movdqu (0 * 16)(%rdi), STATE0
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movdqu (1 * 16)(%rdi), STATE1
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movdqu (2 * 16)(%rdi), STATE2
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movdqu (3 * 16)(%rdi), STATE3
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movdqu (4 * 16)(%rdi), STATE4
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mov %rsi, %r8
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or %rdx, %r8
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and $0xF, %r8
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jnz .Ldec_u_loop
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.align 4
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.Ldec_a_loop:
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movdqa (%rsi), MSG
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pxor STATE0, MSG
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pshufd $MASK3, STATE1, T0
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pxor T0, MSG
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movdqa STATE2, T0
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pand STATE3, T0
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pxor T0, MSG
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movdqa MSG, (%rdx)
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call __morus640_update
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sub $16, %rcx
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add $16, %rsi
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add $16, %rdx
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cmp $16, %rcx
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jge .Ldec_a_loop
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jmp .Ldec_cont
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.align 4
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.Ldec_u_loop:
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movdqu (%rsi), MSG
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pxor STATE0, MSG
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pshufd $MASK3, STATE1, T0
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pxor T0, MSG
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movdqa STATE2, T0
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pand STATE3, T0
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pxor T0, MSG
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movdqu MSG, (%rdx)
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call __morus640_update
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sub $16, %rcx
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add $16, %rsi
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add $16, %rdx
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cmp $16, %rcx
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jge .Ldec_u_loop
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.Ldec_cont:
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/* store the state: */
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movdqu STATE0, (0 * 16)(%rdi)
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movdqu STATE1, (1 * 16)(%rdi)
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movdqu STATE2, (2 * 16)(%rdi)
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movdqu STATE3, (3 * 16)(%rdi)
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movdqu STATE4, (4 * 16)(%rdi)
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.Ldec_out:
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FRAME_END
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ret
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ENDPROC(crypto_morus640_sse2_dec)
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/*
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* void crypto_morus640_sse2_dec_tail(void *state, const void *src, void *dst,
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* unsigned int length);
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*/
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ENTRY(crypto_morus640_sse2_dec_tail)
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FRAME_BEGIN
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/* load the state: */
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movdqu (0 * 16)(%rdi), STATE0
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movdqu (1 * 16)(%rdi), STATE1
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movdqu (2 * 16)(%rdi), STATE2
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movdqu (3 * 16)(%rdi), STATE3
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movdqu (4 * 16)(%rdi), STATE4
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/* decrypt message: */
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call __load_partial
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pxor STATE0, MSG
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pshufd $MASK3, STATE1, T0
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pxor T0, MSG
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movdqa STATE2, T0
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pand STATE3, T0
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pxor T0, MSG
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movdqa MSG, T0
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call __store_partial
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/* mask with byte count: */
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movq %rcx, T0
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punpcklbw T0, T0
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punpcklbw T0, T0
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punpcklbw T0, T0
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punpcklbw T0, T0
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movdqa .Lmorus640_counter, T1
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pcmpgtb T1, T0
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pand T0, MSG
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call __morus640_update
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/* store the state: */
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movdqu STATE0, (0 * 16)(%rdi)
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movdqu STATE1, (1 * 16)(%rdi)
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movdqu STATE2, (2 * 16)(%rdi)
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movdqu STATE3, (3 * 16)(%rdi)
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movdqu STATE4, (4 * 16)(%rdi)
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FRAME_END
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ret
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ENDPROC(crypto_morus640_sse2_dec_tail)
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/*
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* void crypto_morus640_sse2_final(void *state, void *tag_xor,
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* u64 assoclen, u64 cryptlen);
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*/
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ENTRY(crypto_morus640_sse2_final)
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FRAME_BEGIN
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/* load the state: */
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movdqu (0 * 16)(%rdi), STATE0
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movdqu (1 * 16)(%rdi), STATE1
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movdqu (2 * 16)(%rdi), STATE2
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movdqu (3 * 16)(%rdi), STATE3
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movdqu (4 * 16)(%rdi), STATE4
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/* xor state[0] into state[4]: */
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pxor STATE0, STATE4
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/* prepare length block: */
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movq %rdx, MSG
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movq %rcx, T0
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pslldq $8, T0
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pxor T0, MSG
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psllq $3, MSG /* multiply by 8 (to get bit count) */
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/* update state: */
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call __morus640_update
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call __morus640_update
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call __morus640_update
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call __morus640_update
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call __morus640_update
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call __morus640_update
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call __morus640_update
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call __morus640_update
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call __morus640_update
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call __morus640_update
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/* xor tag: */
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movdqu (%rsi), MSG
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pxor STATE0, MSG
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pshufd $MASK3, STATE1, T0
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pxor T0, MSG
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movdqa STATE2, T0
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pand STATE3, T0
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pxor T0, MSG
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movdqu MSG, (%rsi)
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FRAME_END
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ret
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ENDPROC(crypto_morus640_sse2_final)
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