This patch introduces the assembly routine to do a by8 AES CBC encryption in support of the AES CBC multi-buffer implementation.
It encrypts 8 data streams of the same key size simultaneously. Originally-by: Chandramouli Narayanan <mouli_7...@yahoo.com> Signed-off-by: Megha Dey <megha....@linux.intel.com> Acked-by: Tim Chen <tim.c.c...@linux.intel.com> --- arch/x86/crypto/aes-cbc-mb/aes_cbc_enc_x8.S | 775 ++++++++++++++++++++++++++++ 1 file changed, 775 insertions(+) create mode 100644 arch/x86/crypto/aes-cbc-mb/aes_cbc_enc_x8.S diff --git a/arch/x86/crypto/aes-cbc-mb/aes_cbc_enc_x8.S b/arch/x86/crypto/aes-cbc-mb/aes_cbc_enc_x8.S new file mode 100644 index 0000000..2130574 --- /dev/null +++ b/arch/x86/crypto/aes-cbc-mb/aes_cbc_enc_x8.S @@ -0,0 +1,775 @@ +/* + * AES CBC by8 multibuffer optimization (x86_64) + * This file implements 128/192/256 bit AES CBC encryption + * + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2016 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * Contact Information: + * James Guilford <james.guilf...@intel.com> + * Sean Gulley <sean.m.gul...@intel.com> + * Tim Chen <tim.c.c...@linux.intel.com> + * Megha Dey <megha....@linux.intel.com> + * + * BSD LICENSE + * + * Copyright(c) 2016 Intel Corporation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include <linux/linkage.h> + +/* stack size needs to be an odd multiple of 8 for alignment */ + +#define AES_KEYSIZE_128 16 +#define AES_KEYSIZE_192 24 +#define AES_KEYSIZE_256 32 + +#define XMM_SAVE_SIZE 16*10 +#define GPR_SAVE_SIZE 8*9 +#define STACK_SIZE (XMM_SAVE_SIZE + GPR_SAVE_SIZE) + +#define GPR_SAVE_REG %rsp +#define GPR_SAVE_AREA %rsp + XMM_SAVE_SIZE +#define LEN_AREA_OFFSET XMM_SAVE_SIZE + 8*8 +#define LEN_AREA_REG %rsp +#define LEN_AREA %rsp + XMM_SAVE_SIZE + 8*8 + +#define IN_OFFSET 0 +#define OUT_OFFSET 8*8 +#define KEYS_OFFSET 16*8 +#define IV_OFFSET 24*8 + + +#define IDX %rax +#define TMP %rbx +#define ARG %rdi +#define LEN %rsi + +#define KEYS0 %r14 +#define KEYS1 %r15 +#define KEYS2 %rbp +#define KEYS3 %rdx +#define KEYS4 %rcx +#define KEYS5 %r8 +#define KEYS6 %r9 +#define KEYS7 %r10 + +#define IN0 %r11 +#define IN2 %r12 +#define IN4 %r13 +#define IN6 LEN + +#define XDATA0 %xmm0 +#define XDATA1 %xmm1 +#define XDATA2 %xmm2 +#define XDATA3 %xmm3 +#define XDATA4 %xmm4 +#define XDATA5 %xmm5 +#define XDATA6 %xmm6 +#define XDATA7 %xmm7 + +#define XKEY0_3 %xmm8 +#define XKEY1_4 %xmm9 +#define XKEY2_5 %xmm10 +#define XKEY3_6 %xmm11 +#define XKEY4_7 %xmm12 +#define XKEY5_8 %xmm13 +#define XKEY6_9 %xmm14 +#define XTMP %xmm15 + +#define MOVDQ movdqu /* assume buffers not aligned */ +#define CONCAT(a, b) a##b +#define INPUT_REG_SUFX 1 /* IN */ +#define XDATA_REG_SUFX 2 /* XDAT */ +#define KEY_REG_SUFX 3 /* KEY */ +#define XMM_REG_SUFX 4 /* XMM */ + +/* + * To avoid positional parameter errors while compiling + * three registers need to be passed + */ +.text + +.macro pxor2 x, y, z + MOVDQ (\x,\y), XTMP + pxor XTMP, \z +.endm + +.macro inreg n + .if (\n == 0) + reg_IN = IN0 + .elseif (\n == 2) + reg_IN = IN2 + .elseif (\n == 4) + reg_IN = IN4 + .elseif (\n == 6) + reg_IN = IN6 + .else + error "inreg: incorrect register number" + .endif +.endm +.macro xdatareg n + .if (\n == 0) + reg_XDAT = XDATA0 + .elseif (\n == 1) + reg_XDAT = XDATA1 + .elseif (\n == 2) + reg_XDAT = XDATA2 + .elseif (\n == 3) + reg_XDAT = XDATA3 + .elseif (\n == 4) + reg_XDAT = XDATA4 + .elseif (\n == 5) + reg_XDAT = XDATA5 + .elseif (\n == 6) + reg_XDAT = XDATA6 + .elseif (\n == 7) + reg_XDAT = XDATA7 + .endif +.endm +.macro xkeyreg n + .if (\n == 0) + reg_KEY = KEYS0 + .elseif (\n == 1) + reg_KEY = KEYS1 + .elseif (\n == 2) + reg_KEY = KEYS2 + .elseif (\n == 3) + reg_KEY = KEYS3 + .elseif (\n == 4) + reg_KEY = KEYS4 + .elseif (\n == 5) + reg_KEY = KEYS5 + .elseif (\n == 6) + reg_KEY = KEYS6 + .elseif (\n == 7) + reg_KEY = KEYS7 + .endif +.endm +.macro xmmreg n + .if (\n >= 0) && (\n < 16) + /* Valid register number */ + reg_XMM = %xmm\n + .else + error "xmmreg: incorrect register number" + .endif +.endm + +/* + * suffix - register suffix + * set up the register name using the loop index I + */ +.macro define_reg suffix +.altmacro + .if (\suffix == INPUT_REG_SUFX) + inreg %I + .elseif (\suffix == XDATA_REG_SUFX) + xdatareg %I + .elseif (\suffix == KEY_REG_SUFX) + xkeyreg %I + .elseif (\suffix == XMM_REG_SUFX) + xmmreg %I + .else + error "define_reg: unknown register suffix" + .endif +.noaltmacro +.endm + +/* + * aes_cbc_enc_x8 key_len + * macro to encode data for 128bit, 192bit and 256bit keys + */ + +.macro aes_cbc_enc_x8 key_len + + sub $STACK_SIZE, %rsp + + mov %rbx, (XMM_SAVE_SIZE + 8*0)(GPR_SAVE_REG) + mov %rbp, (XMM_SAVE_SIZE + 8*3)(GPR_SAVE_REG) + mov %r12, (XMM_SAVE_SIZE + 8*4)(GPR_SAVE_REG) + mov %r13, (XMM_SAVE_SIZE + 8*5)(GPR_SAVE_REG) + mov %r14, (XMM_SAVE_SIZE + 8*6)(GPR_SAVE_REG) + mov %r15, (XMM_SAVE_SIZE + 8*7)(GPR_SAVE_REG) + + mov $16, IDX + shl $4, LEN /* LEN = LEN * 16 */ + /* LEN is now in terms of bytes */ + mov LEN, (LEN_AREA_OFFSET)(LEN_AREA_REG) + + /* Run through storing arguments in IN0,2,4,6 */ + I = 0 + .rept 4 + define_reg INPUT_REG_SUFX + mov (IN_OFFSET + 8*I)(ARG), reg_IN + I = (I + 2) + .endr + + /* load 1 .. 8 blocks of plain text into XDATA0..XDATA7 */ + I = 0 + .rept 4 + mov (IN_OFFSET + 8*(I+1))(ARG), TMP + define_reg INPUT_REG_SUFX + define_reg XDATA_REG_SUFX + /* load first block of plain text */ + MOVDQ (reg_IN), reg_XDAT + I = (I + 1) + define_reg XDATA_REG_SUFX + /* load next block of plain text */ + MOVDQ (TMP), reg_XDAT + I = (I + 1) + .endr + + /* Run through XDATA0 .. XDATA7 to perform plaintext XOR IV */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + pxor (IV_OFFSET + 16*I)(ARG), reg_XDAT + I = (I + 1) + .endr + + I = 0 + .rept 8 + define_reg KEY_REG_SUFX + mov (KEYS_OFFSET + 8*I)(ARG), reg_KEY + I = (I + 1) + .endr + + I = 0 + /* 0..7 ARK */ + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + pxor 16*0(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + I = 0 + /* 1. ENC */ + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*1)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + movdqa 16*3(KEYS0), XKEY0_3 /* load round 3 key */ + + I = 0 + /* 2. ENC */ + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*2)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + movdqa 16*4(KEYS1), XKEY1_4 /* load round 4 key */ + + /* 3. ENC */ + aesenc XKEY0_3, XDATA0 + I = 1 + .rept 7 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*3)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* + * FIXME: + * why can't we reorder encrypt DATA0..DATA7 and load 5th round? + */ + aesenc (16*4)(KEYS0), XDATA0 /* 4. ENC */ + movdqa 16*5(KEYS2), XKEY2_5 /* load round 5 key */ + aesenc XKEY1_4, XDATA1 /* 4. ENC */ + + I = 2 + .rept 6 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*4)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + aesenc (16*5)(KEYS0), XDATA0 /* 5. ENC */ + aesenc (16*5)(KEYS1), XDATA1 /* 5. ENC */ + movdqa 16*6(KEYS3), XKEY3_6 /* load round 6 key */ + aesenc XKEY2_5, XDATA2 /* 5. ENC */ + I = 3 + .rept 5 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*5)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + aesenc (16*6)(KEYS0), XDATA0 /* 6. ENC */ + aesenc (16*6)(KEYS1), XDATA1 /* 6. ENC */ + aesenc (16*6)(KEYS2), XDATA2 /* 6. ENC */ + movdqa 16*7(KEYS4), XKEY4_7 /* load round 7 key */ + aesenc XKEY3_6, XDATA3 /* 6. ENC */ + + I = 4 + .rept 4 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*6)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + I = 0 + .rept 4 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*7)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + movdqa 16*8(KEYS5), XKEY5_8 /* load round 8 key */ + aesenc XKEY4_7, XDATA4 /* 7. ENC */ + I = 5 + .rept 3 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*7)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + I = 0 + .rept 5 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*8)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + movdqa 16*9(KEYS6), XKEY6_9 /* load round 9 key */ + aesenc XKEY5_8, XDATA5 /* 8. ENC */ + aesenc 16*8(KEYS6), XDATA6 /* 8. ENC */ + aesenc 16*8(KEYS7), XDATA7 /* 8. ENC */ + + I = 0 + .rept 6 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*9)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + mov (OUT_OFFSET + 8*0)(ARG), TMP + aesenc XKEY6_9, XDATA6 /* 9. ENC */ + aesenc 16*9(KEYS7), XDATA7 /* 9. ENC */ + + /* 10. ENC (last for 128bit keys) */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + .if (\key_len == AES_KEYSIZE_128) + aesenclast (16*10)(reg_KEY), reg_XDAT + .else + aesenc (16*10)(reg_KEY), reg_XDAT + .endif + I = (I + 1) + .endr + + .if (\key_len != AES_KEYSIZE_128) + /* 11. ENC */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*11)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 12. ENC (last for 192bit key) */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + .if (\key_len == AES_KEYSIZE_192) + aesenclast (16*12)(reg_KEY), reg_XDAT + .else + aesenc (16*12)(reg_KEY), reg_XDAT + .endif + I = (I + 1) + .endr + + /* for 256bit, two more rounds */ + .if \key_len == AES_KEYSIZE_256 + + /* 13. ENC */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc (16*13)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 14. ENC last encode for 256bit key */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenclast (16*14)(reg_KEY), reg_XDAT + I = (I + 1) + .endr + .endif + + .endif + + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + MOVDQ reg_XDAT, (TMP) /* write back ciphertext */ + I = (I + 1) + .if (I < 8) + mov (OUT_OFFSET + 8*I)(ARG), TMP + .endif + .endr + + cmp IDX, LEN_AREA_OFFSET(LEN_AREA_REG) + je .Ldone\key_len + +.Lmain_loop\key_len: + mov (IN_OFFSET + 8*1)(ARG), TMP + pxor2 IN0, IDX, XDATA0 /* next block of plain text */ + pxor2 TMP, IDX, XDATA1 /* next block of plain text */ + + mov (IN_OFFSET + 8*3)(ARG), TMP + pxor2 IN2, IDX, XDATA2 /* next block of plain text */ + pxor2 TMP, IDX, XDATA3 /* next block of plain text */ + + mov (IN_OFFSET + 8*5)(ARG), TMP + pxor2 IN4, IDX, XDATA4 /* next block of plain text */ + pxor2 TMP, IDX, XDATA5 /* next block of plain text */ + + mov (IN_OFFSET + 8*7)(ARG), TMP + pxor2 IN6, IDX, XDATA6 /* next block of plain text */ + pxor2 TMP, IDX, XDATA7 /* next block of plain text */ + + /* 0. ARK */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + pxor 16*0(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 1. ENC */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*1(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 2. ENC */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*2(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 3. ENC */ + aesenc XKEY0_3, XDATA0 /* 3. ENC */ + I = 1 + .rept 7 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*3(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 4. ENC */ + aesenc 16*4(KEYS0), XDATA0 /* 4. ENC */ + aesenc XKEY1_4, XDATA1 /* 4. ENC */ + I = 2 + .rept 6 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*4(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 5. ENC */ + aesenc 16*5(KEYS0), XDATA0 /* 5. ENC */ + aesenc 16*5(KEYS1), XDATA1 /* 5. ENC */ + aesenc XKEY2_5, XDATA2 /* 5. ENC */ + + I = 3 + .rept 5 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*5(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 6. ENC */ + I = 0 + .rept 3 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*6(reg_KEY), reg_XDAT + I = (I + 1) + .endr + aesenc XKEY3_6, XDATA3 /* 6. ENC */ + I = 4 + .rept 4 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*6(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 7. ENC */ + I = 0 + .rept 4 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*7(reg_KEY), reg_XDAT + I = (I + 1) + .endr + aesenc XKEY4_7, XDATA4 /* 7. ENC */ + I = 5 + .rept 3 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*7(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 8. ENC */ + I = 0 + .rept 5 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*8(reg_KEY), reg_XDAT + I = (I + 1) + .endr + aesenc XKEY5_8, XDATA5 /* 8. ENC */ + aesenc 16*8(KEYS6), XDATA6 /* 8. ENC */ + aesenc 16*8(KEYS7), XDATA7 /* 8. ENC */ + + /* 9. ENC */ + I = 0 + .rept 6 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*9(reg_KEY), reg_XDAT + I = (I + 1) + .endr + mov (OUT_OFFSET + 8*0)(ARG), TMP + aesenc XKEY6_9, XDATA6 /* 9. ENC */ + aesenc 16*9(KEYS7), XDATA7 /* 9. ENC */ + + /* 10. ENC (last for 128 bit key) */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + .if (\key_len == AES_KEYSIZE_128) + aesenclast 16*10(reg_KEY), reg_XDAT + .else + aesenc 16*10(reg_KEY), reg_XDAT + .endif + I = (I + 1) + .endr + + .if (\key_len != AES_KEYSIZE_128) + /* 11. ENC */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*11(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 12. last ENC for 192bit key */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + .if (\key_len == AES_KEYSIZE_192) + aesenclast 16*12(reg_KEY), reg_XDAT + .else + aesenc 16*12(reg_KEY), reg_XDAT + .endif + I = (I + 1) + .endr + + .if \key_len == AES_KEYSIZE_256 + /* for 256bit, two more rounds */ + /* 13. ENC */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenc 16*13(reg_KEY), reg_XDAT + I = (I + 1) + .endr + + /* 14. last ENC for 256bit key */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + define_reg KEY_REG_SUFX + aesenclast 16*14(reg_KEY), reg_XDAT + I = (I + 1) + .endr + .endif + .endif + + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + /* write back cipher text */ + MOVDQ reg_XDAT, (TMP , IDX) + I = (I + 1) + .if (I < 8) + mov (OUT_OFFSET + 8*I)(ARG), TMP + .endif + .endr + + add $16, IDX + cmp IDX, LEN_AREA_OFFSET(LEN_AREA_REG) + jne .Lmain_loop\key_len + +.Ldone\key_len: + /* update IV */ + I = 0 + .rept 8 + define_reg XDATA_REG_SUFX + movdqa reg_XDAT, (IV_OFFSET + 16*I)(ARG) + I = (I + 1) + .endr + + /* update IN and OUT */ + movd LEN_AREA_OFFSET(LEN_AREA_REG), %xmm0 + pshufd $0x44, %xmm0, %xmm0 + + I = 1 + .rept 4 + define_reg XMM_REG_SUFX + movdqa (IN_OFFSET + 16*(I-1))(ARG), reg_XMM + I = (I + 1) + .endr + + paddq %xmm0, %xmm1 + paddq %xmm0, %xmm2 + paddq %xmm0, %xmm3 + paddq %xmm0, %xmm4 + + I = 5 + .rept 4 + define_reg XMM_REG_SUFX + movdqa (OUT_OFFSET + 16*(I-5))(ARG), reg_XMM + I = (I + 1) + .endr + + I = 1 + .rept 4 + define_reg XMM_REG_SUFX + movdqa reg_XMM, (IN_OFFSET + 16*(I-1))(ARG) + I = (I + 1) + .endr + + paddq %xmm0, %xmm5 + paddq %xmm0, %xmm6 + paddq %xmm0, %xmm7 + paddq %xmm0, %xmm8 + + I = 5 + .rept 4 + define_reg XMM_REG_SUFX + movdqa reg_XMM, (OUT_OFFSET + 16*(I-5))(ARG) + I = (I + 1) + .endr + + mov (XMM_SAVE_SIZE + 8*0)(GPR_SAVE_REG), %rbx + mov (XMM_SAVE_SIZE + 8*3)(GPR_SAVE_REG), %rbp + mov (XMM_SAVE_SIZE + 8*4)(GPR_SAVE_REG), %r12 + mov (XMM_SAVE_SIZE + 8*5)(GPR_SAVE_REG), %r13 + mov (XMM_SAVE_SIZE + 8*6)(GPR_SAVE_REG), %r14 + mov (XMM_SAVE_SIZE + 8*7)(GPR_SAVE_REG), %r15 + + add $STACK_SIZE, %rsp + + ret +.endm + +/* + * AES CBC encryption routine supporting 128/192/256 bit keys + * + * void aes_cbc_enc_128_x8(struct aes_cbc_args_x8 *args, u64 len); + * arg 1: rcx : addr of AES_ARGS_x8 structure + * arg 2: rdx : len (in units of 16-byte blocks) + * void aes_cbc_enc_192_x8(struct aes_cbc_args_x8 *args, u64 len); + * arg 1: rcx : addr of aes_cbc_args_x8 structure + * arg 2: rdx : len (in units of 16-byte blocks) + * void aes_cbc_enc_256_x8(struct aes_cbc_args_x8 *args, u64 len); + * arg 1: rcx : addr of aes_cbc_args_x8 structure + * arg 2: rdx : len (in units of 16-byte blocks) + */ + +ENTRY(aes_cbc_enc_128_x8) + + aes_cbc_enc_x8 AES_KEYSIZE_128 + +ENDPROC(aes_cbc_enc_128_x8) + +ENTRY(aes_cbc_enc_192_x8) + + aes_cbc_enc_x8 AES_KEYSIZE_192 + +ENDPROC(aes_cbc_enc_192_x8) + +ENTRY(aes_cbc_enc_256_x8) + + aes_cbc_enc_x8 AES_KEYSIZE_256 + +ENDPROC(aes_cbc_enc_256_x8) -- 1.9.1
