;;
;; Copyright (c) 2012-2018, Intel Corporation
;;
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;;       may be used to endorse or promote products derived from this software
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;;

; Routine to do AES key expansion
%include "os.asm"

%macro key_expansion_128_sse 0
	;; Assumes the xmm3 includes all zeros at this point.
        pshufd	xmm2, xmm2, 11111111b
        shufps	xmm3, xmm1, 00010000b
        pxor	xmm1, xmm3
        shufps	xmm3, xmm1, 10001100b
        pxor	xmm1, xmm3
	pxor	xmm1, xmm2
%endmacro

%macro key_expansion_128_avx 0
	;; Assumes the xmm3 includes all zeros at this point.
        vpshufd	xmm2, xmm2, 11111111b
        vshufps	xmm3, xmm3, xmm1, 00010000b
        vpxor	xmm1, xmm1, xmm3
        vshufps	xmm3, xmm3, xmm1, 10001100b
        vpxor	xmm1, xmm1, xmm3
	vpxor	xmm1, xmm1, xmm2
%endmacro

%ifdef LINUX
%define KEY		rdi
%define EXP_ENC_KEYS	rsi
%define EXP_DEC_KEYS	rdx
%else
%define KEY		rcx
%define EXP_ENC_KEYS	rdx
%define EXP_DEC_KEYS	r8
%endif

section .text

; void aes_keyexp_128(UINT128 *key,
;                     UINT128 *enc_exp_keys,
;                     UINT128 *dec_exp_keys);
;
; arg 1: rcx: pointer to key
; arg 2: rdx: pointer to expanded key array for encrypt
; arg 3: r8:  pointer to expanded key array for decrypt
;
MKGLOBAL(aes_keyexp_128_sse,function,)
aes_keyexp_128_sse:
        movdqu	xmm1, [KEY]	; loading the AES key
	movdqa	[EXP_ENC_KEYS + 16*0], xmm1
        movdqa	[EXP_DEC_KEYS + 16*10], xmm1  ; Storing key in memory
	pxor	xmm3, xmm3

        aeskeygenassist	xmm2, xmm1, 0x1     ; Generating round key 1
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*1], xmm1
        aesimc	xmm4, xmm1
        movdqa	[EXP_DEC_KEYS + 16*9], xmm4

        aeskeygenassist xmm2, xmm1, 0x2     ; Generating round key 2
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*2], xmm1
        aesimc	xmm5, xmm1
        movdqa	[EXP_DEC_KEYS + 16*8], xmm5

        aeskeygenassist xmm2, xmm1, 0x4     ; Generating round key 3
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*3], xmm1
        aesimc	xmm4, xmm1
        movdqa	[EXP_DEC_KEYS + 16*7], xmm4

        aeskeygenassist xmm2, xmm1, 0x8     ; Generating round key 4
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*4], xmm1
        aesimc	xmm5, xmm1
        movdqa	[EXP_DEC_KEYS + 16*6], xmm5

        aeskeygenassist xmm2, xmm1, 0x10    ; Generating round key 5
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*5], xmm1
        aesimc	xmm4, xmm1
        movdqa	[EXP_DEC_KEYS + 16*5], xmm4

        aeskeygenassist xmm2, xmm1, 0x20    ; Generating round key 6
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*6], xmm1
        aesimc	xmm5, xmm1
        movdqa	[EXP_DEC_KEYS + 16*4], xmm5

        aeskeygenassist xmm2, xmm1, 0x40    ; Generating round key 7
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*7], xmm1
        aesimc	xmm4, xmm1
        movdqa	[EXP_DEC_KEYS + 16*3], xmm4

        aeskeygenassist xmm2, xmm1, 0x80    ; Generating round key 8
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*8], xmm1
        aesimc	xmm5, xmm1
        movdqa	[EXP_DEC_KEYS + 16*2], xmm5

        aeskeygenassist xmm2, xmm1, 0x1b    ; Generating round key 9
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*9], xmm1
        aesimc	xmm4, xmm1
        movdqa	[EXP_DEC_KEYS + 16*1], xmm4

        aeskeygenassist xmm2, xmm1, 0x36    ; Generating round key 10
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*10], xmm1
        movdqa	[EXP_DEC_KEYS + 16*0], xmm1

	ret

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

MKGLOBAL(aes_keyexp_128_avx,function,)
MKGLOBAL(aes_keyexp_128_avx2,function,)
MKGLOBAL(aes_keyexp_128_avx512,function,)
aes_keyexp_128_avx:
aes_keyexp_128_avx2:
aes_keyexp_128_avx512:
        vmovdqu	xmm1, [KEY]	; loading the AES key
	vmovdqa	[EXP_ENC_KEYS + 16*0], xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*10], xmm1  ; Storing key in memory
	vpxor	xmm3, xmm3, xmm3

        vaeskeygenassist	xmm2, xmm1, 0x1     ; Generating round key 1
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*1], xmm1
        vaesimc	xmm4, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*9], xmm4

        vaeskeygenassist xmm2, xmm1, 0x2     ; Generating round key 2
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*2], xmm1
        vaesimc	xmm5, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*8], xmm5

        vaeskeygenassist xmm2, xmm1, 0x4     ; Generating round key 3
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*3], xmm1
        vaesimc	xmm4, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*7], xmm4

        vaeskeygenassist xmm2, xmm1, 0x8     ; Generating round key 4
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*4], xmm1
        vaesimc	xmm5, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*6], xmm5

        vaeskeygenassist xmm2, xmm1, 0x10    ; Generating round key 5
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*5], xmm1
        vaesimc	xmm4, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*5], xmm4

        vaeskeygenassist xmm2, xmm1, 0x20    ; Generating round key 6
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*6], xmm1
        vaesimc	xmm5, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*4], xmm5

        vaeskeygenassist xmm2, xmm1, 0x40    ; Generating round key 7
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*7], xmm1
        vaesimc	xmm4, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*3], xmm4

        vaeskeygenassist xmm2, xmm1, 0x80    ; Generating round key 8
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*8], xmm1
        vaesimc	xmm5, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*2], xmm5

        vaeskeygenassist xmm2, xmm1, 0x1b    ; Generating round key 9
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*9], xmm1
        vaesimc	xmm4, xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*1], xmm4

        vaeskeygenassist xmm2, xmm1, 0x36    ; Generating round key 10
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*10], xmm1
        vmovdqa	[EXP_DEC_KEYS + 16*0], xmm1

	ret

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

; void aes_keyexp_128_enc_sse(UINT128 *key,
;                             UINT128 *enc_exp_keys);
;
; arg 1: rcx: pointer to key
; arg 2: rdx: pointer to expanded key array for encrypt
;
MKGLOBAL(aes_keyexp_128_enc_sse,function,)
aes_keyexp_128_enc_sse:
        movdqu	xmm1, [KEY]	; loading the AES key
	movdqa	[EXP_ENC_KEYS + 16*0], xmm1
	pxor	xmm3, xmm3

        aeskeygenassist	xmm2, xmm1, 0x1     ; Generating round key 1
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*1], xmm1

        aeskeygenassist xmm2, xmm1, 0x2     ; Generating round key 2
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*2], xmm1

        aeskeygenassist xmm2, xmm1, 0x4     ; Generating round key 3
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*3], xmm1

        aeskeygenassist xmm2, xmm1, 0x8     ; Generating round key 4
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*4], xmm1

        aeskeygenassist xmm2, xmm1, 0x10    ; Generating round key 5
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*5], xmm1

        aeskeygenassist xmm2, xmm1, 0x20    ; Generating round key 6
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*6], xmm1

        aeskeygenassist xmm2, xmm1, 0x40    ; Generating round key 7
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*7], xmm1

        aeskeygenassist xmm2, xmm1, 0x80    ; Generating round key 8
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*8], xmm1

        aeskeygenassist xmm2, xmm1, 0x1b    ; Generating round key 9
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*9], xmm1

        aeskeygenassist xmm2, xmm1, 0x36    ; Generating round key 10
        key_expansion_128_sse
	movdqa	[EXP_ENC_KEYS + 16*10], xmm1

	ret

MKGLOBAL(aes_keyexp_128_enc_avx,function,)
MKGLOBAL(aes_keyexp_128_enc_avx2,function,)
MKGLOBAL(aes_keyexp_128_enc_avx512,function,)
aes_keyexp_128_enc_avx:
aes_keyexp_128_enc_avx2:
aes_keyexp_128_enc_avx512:
        vmovdqu	xmm1, [KEY]	; loading the AES key
	vmovdqa	[EXP_ENC_KEYS + 16*0], xmm1
	vpxor	xmm3, xmm3, xmm3

        vaeskeygenassist	xmm2, xmm1, 0x1     ; Generating round key 1
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*1], xmm1

        vaeskeygenassist xmm2, xmm1, 0x2     ; Generating round key 2
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*2], xmm1

        vaeskeygenassist xmm2, xmm1, 0x4     ; Generating round key 3
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*3], xmm1

        vaeskeygenassist xmm2, xmm1, 0x8     ; Generating round key 4
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*4], xmm1

        vaeskeygenassist xmm2, xmm1, 0x10    ; Generating round key 5
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*5], xmm1

        vaeskeygenassist xmm2, xmm1, 0x20    ; Generating round key 6
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*6], xmm1

        vaeskeygenassist xmm2, xmm1, 0x40    ; Generating round key 7
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*7], xmm1

        vaeskeygenassist xmm2, xmm1, 0x80    ; Generating round key 8
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*8], xmm1

        vaeskeygenassist xmm2, xmm1, 0x1b    ; Generating round key 9
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*9], xmm1

        vaeskeygenassist xmm2, xmm1, 0x36    ; Generating round key 10
        key_expansion_128_avx
	vmovdqa	[EXP_ENC_KEYS + 16*10], xmm1

	ret

%ifdef LINUX
section .note.GNU-stack noalloc noexec nowrite progbits
%endif
