/* rijndael-armv8-aarch32-ce.S - ARMv8/CE accelerated AES * Copyright (C) 2016 Jussi Kivilinna * * This file is part of Libgcrypt. * * Libgcrypt is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * Libgcrypt 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see . */ #include #if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) && \ defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) && \ defined(HAVE_GCC_INLINE_ASM_AARCH32_CRYPTO) .syntax unified .arch armv8-a .fpu crypto-neon-fp-armv8 .arm .text #ifdef __PIC__ # define GET_DATA_POINTER(reg, name, rtmp) \ ldr reg, 1f; \ ldr rtmp, 2f; \ b 3f; \ 1: .word _GLOBAL_OFFSET_TABLE_-(3f+8); \ 2: .word name(GOT); \ 3: add reg, pc, reg; \ ldr reg, [reg, rtmp]; #else # define GET_DATA_POINTER(reg, name, rtmp) ldr reg, =name #endif /* AES macros */ #define aes_preload_keys(keysched, rekeysched) \ vldmia keysched!, {q5-q7}; \ mov rekeysched, keysched; \ vldmialo keysched!, {q8-q15}; /* 128-bit */ \ addeq keysched, #(2*16); \ vldmiaeq keysched!, {q10-q15}; /* 192-bit */ \ addhi keysched, #(4*16); \ vldmiahi keysched!, {q12-q15}; /* 256-bit */ \ #define do_aes_one128(ed, mcimc, qo, qb) \ aes##ed.8 qb, q5; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q6; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q7; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q8; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q9; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q10; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q11; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q12; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q13; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q14; \ veor qo, qb, q15; #define do_aes_one128re(ed, mcimc, qo, qb, keysched, rekeysched) \ vldm rekeysched, {q8-q9}; \ do_aes_one128(ed, mcimc, qo, qb); #define do_aes_one192(ed, mcimc, qo, qb, keysched, rekeysched) \ vldm rekeysched!, {q8}; \ aes##ed.8 qb, q5; \ aes##mcimc.8 qb, qb; \ vldm rekeysched, {q9}; \ aes##ed.8 qb, q6; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q7; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q8; \ aes##mcimc.8 qb, qb; \ vldmia keysched!, {q8}; \ aes##ed.8 qb, q9; \ aes##mcimc.8 qb, qb; \ sub rekeysched, #(1*16); \ aes##ed.8 qb, q10; \ aes##mcimc.8 qb, qb; \ vldm keysched, {q9}; \ aes##ed.8 qb, q11; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q12; \ aes##mcimc.8 qb, qb; \ sub keysched, #16; \ aes##ed.8 qb, q13; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q14; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q15; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q8; \ veor qo, qb, q9; \ #define do_aes_one256(ed, mcimc, qo, qb, keysched, rekeysched) \ vldmia rekeysched!, {q8}; \ aes##ed.8 qb, q5; \ aes##mcimc.8 qb, qb; \ vldmia rekeysched!, {q9}; \ aes##ed.8 qb, q6; \ aes##mcimc.8 qb, qb; \ vldmia rekeysched!, {q10}; \ aes##ed.8 qb, q7; \ aes##mcimc.8 qb, qb; \ vldm rekeysched, {q11}; \ aes##ed.8 qb, q8; \ aes##mcimc.8 qb, qb; \ vldmia keysched!, {q8}; \ aes##ed.8 qb, q9; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q10; \ aes##mcimc.8 qb, qb; \ vldmia keysched!, {q9}; \ aes##ed.8 qb, q11; \ aes##mcimc.8 qb, qb; \ sub rekeysched, #(3*16); \ aes##ed.8 qb, q12; \ aes##mcimc.8 qb, qb; \ vldmia keysched!, {q10}; \ aes##ed.8 qb, q13; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q14; \ aes##mcimc.8 qb, qb; \ vldm keysched, {q11}; \ aes##ed.8 qb, q15; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q8; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q9; \ aes##mcimc.8 qb, qb; \ aes##ed.8 qb, q10; \ veor qo, qb, q11; \ sub keysched, #(3*16); \ #define aes_round_4(ed, mcimc, b0, b1, b2, b3, key) \ aes##ed.8 b0, key; \ aes##mcimc.8 b0, b0; \ aes##ed.8 b1, key; \ aes##mcimc.8 b1, b1; \ aes##ed.8 b2, key; \ aes##mcimc.8 b2, b2; \ aes##ed.8 b3, key; \ aes##mcimc.8 b3, b3; #define do_aes_4_128(ed, mcimc, b0, b1, b2, b3) \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q5); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q6); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q7); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q8); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q9); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q10); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q11); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q12); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q13); \ aes##ed.8 b0, q14; \ veor b0, b0, q15; \ aes##ed.8 b1, q14; \ veor b1, b1, q15; \ aes##ed.8 b2, q14; \ veor b2, b2, q15; \ aes##ed.8 b3, q14; \ veor b3, b3, q15; #define do_aes_4_128re(ed, mcimc, b0, b1, b2, b3, keysched, rekeysched) \ vldm rekeysched, {q8-q9}; \ do_aes_4_128(ed, mcimc, b0, b1, b2, b3); #define do_aes_4_192(ed, mcimc, b0, b1, b2, b3, keysched, rekeysched) \ vldm rekeysched!, {q8}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q5); \ vldm rekeysched, {q9}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q6); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q7); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q8); \ vldmia keysched!, {q8}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q9); \ sub rekeysched, #(1*16); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q10); \ vldm keysched, {q9}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q11); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q12); \ sub keysched, #16; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q13); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q14); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q15); \ aes##ed.8 b0, q8; \ veor b0, b0, q9; \ aes##ed.8 b1, q8; \ veor b1, b1, q9; \ aes##ed.8 b2, q8; \ veor b2, b2, q9; \ aes##ed.8 b3, q8; \ veor b3, b3, q9; #define do_aes_4_256(ed, mcimc, b0, b1, b2, b3, keysched, rekeysched) \ vldmia rekeysched!, {q8}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q5); \ vldmia rekeysched!, {q9}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q6); \ vldmia rekeysched!, {q10}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q7); \ vldm rekeysched, {q11}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q8); \ vldmia keysched!, {q8}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q9); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q10); \ vldmia keysched!, {q9}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q11); \ sub rekeysched, #(3*16); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q12); \ vldmia keysched!, {q10}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q13); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q14); \ vldm keysched, {q11}; \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q15); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q8); \ aes_round_4(ed, mcimc, b0, b1, b2, b3, q9); \ sub keysched, #(3*16); \ aes##ed.8 b0, q10; \ veor b0, b0, q11; \ aes##ed.8 b1, q10; \ veor b1, b1, q11; \ aes##ed.8 b2, q10; \ veor b2, b2, q11; \ aes##ed.8 b3, q10; \ veor b3, b3, q11; /* Other functional macros */ #define CLEAR_REG(reg) veor reg, reg; /* * unsigned int _gcry_aes_enc_armv8_ce(void *keysched, byte *dst, * const byte *src, * unsigned int nrounds); */ .align 3 .globl _gcry_aes_enc_armv8_ce .type _gcry_aes_enc_armv8_ce,%function; _gcry_aes_enc_armv8_ce: /* input: * r0: keysched * r1: dst * r2: src * r3: nrounds */ vldmia r0!, {q1-q3} /* load 3 round keys */ cmp r3, #12 vld1.8 {q0}, [r2] bhi .Lenc1_256 beq .Lenc1_192 .Lenc1_128: .Lenc1_tail: vldmia r0, {q8-q15} /* load 8 round keys */ aese.8 q0, q1 aesmc.8 q0, q0 CLEAR_REG(q1) aese.8 q0, q2 aesmc.8 q0, q0 CLEAR_REG(q2) aese.8 q0, q3 aesmc.8 q0, q0 CLEAR_REG(q3) aese.8 q0, q8 aesmc.8 q0, q0 CLEAR_REG(q8) aese.8 q0, q9 aesmc.8 q0, q0 CLEAR_REG(q9) aese.8 q0, q10 aesmc.8 q0, q0 CLEAR_REG(q10) aese.8 q0, q11 aesmc.8 q0, q0 CLEAR_REG(q11) aese.8 q0, q12 aesmc.8 q0, q0 CLEAR_REG(q12) aese.8 q0, q13 aesmc.8 q0, q0 CLEAR_REG(q13) aese.8 q0, q14 veor q0, q15 CLEAR_REG(q14) CLEAR_REG(q15) vst1.8 {q0}, [r1] CLEAR_REG(q0) mov r0, #0 bx lr .Lenc1_192: aese.8 q0, q1 aesmc.8 q0, q0 vmov q1, q3 aese.8 q0, q2 aesmc.8 q0, q0 vldm r0!, {q2-q3} /* load 3 round keys */ b .Lenc1_tail .Lenc1_256: vldm r0!, {q15} /* load 1 round key */ aese.8 q0, q1 aesmc.8 q0, q0 aese.8 q0, q2 aesmc.8 q0, q0 aese.8 q0, q3 aesmc.8 q0, q0 vldm r0!, {q1-q3} /* load 3 round keys */ aese.8 q0, q15 aesmc.8 q0, q0 b .Lenc1_tail .size _gcry_aes_enc_armv8_ce,.-_gcry_aes_enc_armv8_ce; /* * unsigned int _gcry_aes_dec_armv8_ce(void *keysched, byte *dst, * const byte *src, * unsigned int nrounds); */ .align 3 .globl _gcry_aes_dec_armv8_ce .type _gcry_aes_dec_armv8_ce,%function; _gcry_aes_dec_armv8_ce: /* input: * r0: keysched * r1: dst * r2: src * r3: nrounds */ vldmia r0!, {q1-q3} /* load 3 round keys */ cmp r3, #12 vld1.8 {q0}, [r2] bhi .Ldec1_256 beq .Ldec1_192 .Ldec1_128: .Ldec1_tail: vldmia r0, {q8-q15} /* load 8 round keys */ aesd.8 q0, q1 aesimc.8 q0, q0 CLEAR_REG(q1) aesd.8 q0, q2 aesimc.8 q0, q0 CLEAR_REG(q2) aesd.8 q0, q3 aesimc.8 q0, q0 CLEAR_REG(q3) aesd.8 q0, q8 aesimc.8 q0, q0 CLEAR_REG(q8) aesd.8 q0, q9 aesimc.8 q0, q0 CLEAR_REG(q9) aesd.8 q0, q10 aesimc.8 q0, q0 CLEAR_REG(q10) aesd.8 q0, q11 aesimc.8 q0, q0 CLEAR_REG(q11) aesd.8 q0, q12 aesimc.8 q0, q0 CLEAR_REG(q12) aesd.8 q0, q13 aesimc.8 q0, q0 CLEAR_REG(q13) aesd.8 q0, q14 veor q0, q15 CLEAR_REG(q14) CLEAR_REG(q15) vst1.8 {q0}, [r1] CLEAR_REG(q0) mov r0, #0 bx lr .Ldec1_192: aesd.8 q0, q1 aesimc.8 q0, q0 vmov q1, q3 aesd.8 q0, q2 aesimc.8 q0, q0 vldm r0!, {q2-q3} /* load 3 round keys */ b .Ldec1_tail .Ldec1_256: vldm r0!, {q15} /* load 1 round key */ aesd.8 q0, q1 aesimc.8 q0, q0 aesd.8 q0, q2 aesimc.8 q0, q0 aesd.8 q0, q3 aesimc.8 q0, q0 vldm r0!, {q1-q3} /* load 3 round keys */ aesd.8 q0, q15 aesimc.8 q0, q0 b .Ldec1_tail .size _gcry_aes_dec_armv8_ce,.-_gcry_aes_dec_armv8_ce; /* * void _gcry_aes_cbc_enc_armv8_ce (const void *keysched, * unsigned char *outbuf, * const unsigned char *inbuf, * unsigned char *iv, size_t nblocks, * int cbc_mac, unsigned int nrounds); */ .align 3 .globl _gcry_aes_cbc_enc_armv8_ce .type _gcry_aes_cbc_enc_armv8_ce,%function; _gcry_aes_cbc_enc_armv8_ce: /* input: * r0: keysched * r1: outbuf * r2: inbuf * r3: iv * %st+0: nblocks => r4 * %st+4: cbc_mac => r5 * %st+8: nrounds => r6 */ push {r4-r6,lr} /* 4*4 = 16b */ ldr r4, [sp, #(16+0)] ldr r5, [sp, #(16+4)] cmp r4, #0 ldr r6, [sp, #(16+8)] beq .Lcbc_enc_skip cmp r5, #0 vpush {q4-q7} moveq r5, #16 movne r5, #0 cmp r6, #12 vld1.8 {q1}, [r3] /* load IV */ aes_preload_keys(r0, lr); beq .Lcbc_enc_loop192 bhi .Lcbc_enc_loop256 #define CBC_ENC(bits, ...) \ .Lcbc_enc_loop##bits: \ vld1.8 {q0}, [r2]!; /* load plaintext */ \ veor q1, q0, q1; \ subs r4, r4, #1; \ \ do_aes_one##bits(e, mc, q1, q1, ##__VA_ARGS__); \ \ vst1.8 {q1}, [r1], r5; /* store ciphertext */ \ \ bne .Lcbc_enc_loop##bits; \ b .Lcbc_enc_done; CBC_ENC(128) CBC_ENC(192, r0, lr) CBC_ENC(256, r0, lr) #undef CBC_ENC .Lcbc_enc_done: vst1.8 {q1}, [r3] /* store IV */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) vpop {q4-q7} CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) .Lcbc_enc_skip: pop {r4-r6,pc} .size _gcry_aes_cbc_enc_armv8_ce,.-_gcry_aes_cbc_enc_armv8_ce; /* * void _gcry_aes_cbc_dec_armv8_ce (const void *keysched, * unsigned char *outbuf, * const unsigned char *inbuf, * unsigned char *iv, unsigned int nrounds); */ .align 3 .globl _gcry_aes_cbc_dec_armv8_ce .type _gcry_aes_cbc_dec_armv8_ce,%function; _gcry_aes_cbc_dec_armv8_ce: /* input: * r0: keysched * r1: outbuf * r2: inbuf * r3: iv * %st+0: nblocks => r4 * %st+4: nrounds => r5 */ push {r4-r6,lr} /* 4*4 = 16b */ ldr r4, [sp, #(16+0)] ldr r5, [sp, #(16+4)] cmp r4, #0 beq .Lcbc_dec_skip vpush {q4-q7} cmp r5, #12 vld1.8 {q0}, [r3] /* load IV */ aes_preload_keys(r0, r6); beq .Lcbc_dec_entry_192 bhi .Lcbc_dec_entry_256 #define CBC_DEC(bits, ...) \ .Lcbc_dec_entry_##bits: \ cmp r4, #4; \ blo .Lcbc_dec_loop_##bits; \ \ .Lcbc_dec_loop4_##bits: \ \ vld1.8 {q1-q2}, [r2]!; /* load ciphertext */ \ sub r4, r4, #4; \ vld1.8 {q3-q4}, [r2]; /* load ciphertext */ \ cmp r4, #4; \ sub r2, #32; \ \ do_aes_4_##bits(d, imc, q1, q2, q3, q4, ##__VA_ARGS__); \ \ veor q1, q1, q0; \ vld1.8 {q0}, [r2]!; /* load next IV */ \ veor q2, q2, q0; \ vld1.8 {q0}, [r2]!; /* load next IV */ \ vst1.8 {q1-q2}, [r1]!; /* store plaintext */ \ veor q3, q3, q0; \ vld1.8 {q0}, [r2]!; /* load next IV */ \ veor q4, q4, q0; \ vld1.8 {q0}, [r2]!; /* load next IV */ \ vst1.8 {q3-q4}, [r1]!; /* store plaintext */ \ \ bhs .Lcbc_dec_loop4_##bits; \ cmp r4, #0; \ beq .Lcbc_dec_done; \ \ .Lcbc_dec_loop_##bits: \ vld1.8 {q1}, [r2]!; /* load ciphertext */ \ subs r4, r4, #1; \ vmov q2, q1; \ \ do_aes_one##bits(d, imc, q1, q1, ##__VA_ARGS__); \ \ veor q1, q1, q0; \ vmov q0, q2; \ vst1.8 {q1}, [r1]!; /* store plaintext */ \ \ bne .Lcbc_dec_loop_##bits; \ b .Lcbc_dec_done; CBC_DEC(128) CBC_DEC(192, r0, r6) CBC_DEC(256, r0, r6) #undef CBC_DEC .Lcbc_dec_done: vst1.8 {q0}, [r3] /* store IV */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) vpop {q4-q7} CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) .Lcbc_dec_skip: pop {r4-r6,pc} .size _gcry_aes_cbc_dec_armv8_ce,.-_gcry_aes_cbc_dec_armv8_ce; /* * void _gcry_aes_cfb_enc_armv8_ce (const void *keysched, * unsigned char *outbuf, * const unsigned char *inbuf, * unsigned char *iv, unsigned int nrounds); */ .align 3 .globl _gcry_aes_cfb_enc_armv8_ce .type _gcry_aes_cfb_enc_armv8_ce,%function; _gcry_aes_cfb_enc_armv8_ce: /* input: * r0: keysched * r1: outbuf * r2: inbuf * r3: iv * %st+0: nblocks => r4 * %st+4: nrounds => r5 */ push {r4-r6,lr} /* 4*4 = 16b */ ldr r4, [sp, #(16+0)] ldr r5, [sp, #(16+4)] cmp r4, #0 beq .Lcfb_enc_skip vpush {q4-q7} cmp r5, #12 vld1.8 {q0}, [r3] /* load IV */ aes_preload_keys(r0, r6); beq .Lcfb_enc_entry_192 bhi .Lcfb_enc_entry_256 #define CFB_ENC(bits, ...) \ .Lcfb_enc_entry_##bits: \ .Lcfb_enc_loop_##bits: \ vld1.8 {q1}, [r2]!; /* load plaintext */ \ subs r4, r4, #1; \ \ do_aes_one##bits(e, mc, q0, q0, ##__VA_ARGS__); \ \ veor q0, q1, q0; \ vst1.8 {q0}, [r1]!; /* store ciphertext */ \ \ bne .Lcfb_enc_loop_##bits; \ b .Lcfb_enc_done; CFB_ENC(128) CFB_ENC(192, r0, r6) CFB_ENC(256, r0, r6) #undef CFB_ENC .Lcfb_enc_done: vst1.8 {q0}, [r3] /* store IV */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) vpop {q4-q7} CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) .Lcfb_enc_skip: pop {r4-r6,pc} .size _gcry_aes_cfb_enc_armv8_ce,.-_gcry_aes_cfb_enc_armv8_ce; /* * void _gcry_aes_cfb_dec_armv8_ce (const void *keysched, * unsigned char *outbuf, * const unsigned char *inbuf, * unsigned char *iv, unsigned int nrounds); */ .align 3 .globl _gcry_aes_cfb_dec_armv8_ce .type _gcry_aes_cfb_dec_armv8_ce,%function; _gcry_aes_cfb_dec_armv8_ce: /* input: * r0: keysched * r1: outbuf * r2: inbuf * r3: iv * %st+0: nblocks => r4 * %st+4: nrounds => r5 */ push {r4-r6,lr} /* 4*4 = 16b */ ldr r4, [sp, #(16+0)] ldr r5, [sp, #(16+4)] cmp r4, #0 beq .Lcfb_dec_skip vpush {q4-q7} cmp r5, #12 vld1.8 {q0}, [r3] /* load IV */ aes_preload_keys(r0, r6); beq .Lcfb_dec_entry_192 bhi .Lcfb_dec_entry_256 #define CFB_DEC(bits, ...) \ .Lcfb_dec_entry_##bits: \ cmp r4, #4; \ blo .Lcfb_dec_loop_##bits; \ \ .Lcfb_dec_loop4_##bits: \ \ vld1.8 {q2-q3}, [r2]!; /* load ciphertext */ \ vmov q1, q0; \ sub r4, r4, #4; \ vld1.8 {q4}, [r2]; /* load ciphertext */ \ sub r2, #32; \ cmp r4, #4; \ \ do_aes_4_##bits(e, mc, q1, q2, q3, q4, ##__VA_ARGS__); \ \ vld1.8 {q0}, [r2]!; /* load ciphertext */ \ veor q1, q1, q0; \ vld1.8 {q0}, [r2]!; /* load ciphertext */ \ veor q2, q2, q0; \ vst1.8 {q1-q2}, [r1]!; /* store plaintext */ \ vld1.8 {q0}, [r2]!; \ veor q3, q3, q0; \ vld1.8 {q0}, [r2]!; /* load next IV / ciphertext */ \ veor q4, q4, q0; \ vst1.8 {q3-q4}, [r1]!; /* store plaintext */ \ \ bhs .Lcfb_dec_loop4_##bits; \ cmp r4, #0; \ beq .Lcfb_dec_done; \ \ .Lcfb_dec_loop_##bits: \ \ vld1.8 {q1}, [r2]!; /* load ciphertext */ \ \ subs r4, r4, #1; \ \ do_aes_one##bits(e, mc, q0, q0, ##__VA_ARGS__); \ \ veor q2, q1, q0; \ vmov q0, q1; \ vst1.8 {q2}, [r1]!; /* store plaintext */ \ \ bne .Lcfb_dec_loop_##bits; \ b .Lcfb_dec_done; CFB_DEC(128) CFB_DEC(192, r0, r6) CFB_DEC(256, r0, r6) #undef CFB_DEC .Lcfb_dec_done: vst1.8 {q0}, [r3] /* store IV */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) vpop {q4-q7} CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) .Lcfb_dec_skip: pop {r4-r6,pc} .size _gcry_aes_cfb_dec_armv8_ce,.-_gcry_aes_cfb_dec_armv8_ce; /* * void _gcry_aes_ctr_enc_armv8_ce (const void *keysched, * unsigned char *outbuf, * const unsigned char *inbuf, * unsigned char *iv, unsigned int nrounds); */ .align 3 .globl _gcry_aes_ctr_enc_armv8_ce .type _gcry_aes_ctr_enc_armv8_ce,%function; _gcry_aes_ctr_enc_armv8_ce: /* input: * r0: keysched * r1: outbuf * r2: inbuf * r3: iv * %st+0: nblocks => r4 * %st+4: nrounds => r5 */ vpush {q4-q7} push {r4-r12,lr} /* 4*16 + 4*10 = 104b */ ldr r4, [sp, #(104+0)] ldr r5, [sp, #(104+4)] cmp r4, #0 beq .Lctr_enc_skip cmp r5, #12 ldm r3, {r7-r10} vld1.8 {q0}, [r3] /* load IV */ rev r7, r7 rev r8, r8 rev r9, r9 rev r10, r10 aes_preload_keys(r0, r6); beq .Lctr_enc_entry_192 bhi .Lctr_enc_entry_256 #define CTR_ENC(bits, ...) \ .Lctr_enc_entry_##bits: \ cmp r4, #4; \ blo .Lctr_enc_loop_##bits; \ \ .Lctr_enc_loop4_##bits: \ cmp r10, #0xfffffffc; \ sub r4, r4, #4; \ blo .Lctr_enc_loop4_##bits##_nocarry; \ cmp r9, #0xffffffff; \ bne .Lctr_enc_loop4_##bits##_nocarry; \ \ adds r10, #1; \ vmov q1, q0; \ blcs .Lctr_overflow_one; \ rev r11, r10; \ vmov.32 d1[1], r11; \ \ adds r10, #1; \ vmov q2, q0; \ blcs .Lctr_overflow_one; \ rev r11, r10; \ vmov.32 d1[1], r11; \ \ adds r10, #1; \ vmov q3, q0; \ blcs .Lctr_overflow_one; \ rev r11, r10; \ vmov.32 d1[1], r11; \ \ adds r10, #1; \ vmov q4, q0; \ blcs .Lctr_overflow_one; \ rev r11, r10; \ vmov.32 d1[1], r11; \ \ b .Lctr_enc_loop4_##bits##_store_ctr; \ \ .Lctr_enc_loop4_##bits##_nocarry: \ \ veor q2, q2; \ vrev64.8 q1, q0; \ vceq.u32 d5, d5; \ vadd.u64 q3, q2, q2; \ vadd.u64 q4, q3, q2; \ vadd.u64 q0, q3, q3; \ vsub.u64 q2, q1, q2; \ vsub.u64 q3, q1, q3; \ vsub.u64 q4, q1, q4; \ vsub.u64 q0, q1, q0; \ vrev64.8 q1, q1; \ vrev64.8 q2, q2; \ vrev64.8 q3, q3; \ vrev64.8 q0, q0; \ vrev64.8 q4, q4; \ add r10, #4; \ \ .Lctr_enc_loop4_##bits##_store_ctr: \ \ vst1.8 {q0}, [r3]; \ cmp r4, #4; \ vld1.8 {q0}, [r2]!; /* load ciphertext */ \ \ do_aes_4_##bits(e, mc, q1, q2, q3, q4, ##__VA_ARGS__); \ \ veor q1, q1, q0; \ vld1.8 {q0}, [r2]!; /* load ciphertext */ \ vst1.8 {q1}, [r1]!; /* store plaintext */ \ vld1.8 {q1}, [r2]!; /* load ciphertext */ \ veor q2, q2, q0; \ veor q3, q3, q1; \ vld1.8 {q0}, [r2]!; /* load ciphertext */ \ vst1.8 {q2}, [r1]!; /* store plaintext */ \ veor q4, q4, q0; \ vld1.8 {q0}, [r3]; /* reload IV */ \ vst1.8 {q3-q4}, [r1]!; /* store plaintext */ \ \ bhs .Lctr_enc_loop4_##bits; \ cmp r4, #0; \ beq .Lctr_enc_done; \ \ .Lctr_enc_loop_##bits: \ \ adds r10, #1; \ vmov q1, q0; \ blcs .Lctr_overflow_one; \ rev r11, r10; \ subs r4, r4, #1; \ vld1.8 {q2}, [r2]!; /* load ciphertext */ \ vmov.32 d1[1], r11; \ \ do_aes_one##bits(e, mc, q1, q1, ##__VA_ARGS__); \ \ veor q1, q2, q1; \ vst1.8 {q1}, [r1]!; /* store plaintext */ \ \ bne .Lctr_enc_loop_##bits; \ b .Lctr_enc_done; CTR_ENC(128) CTR_ENC(192, r0, r6) CTR_ENC(256, r0, r6) #undef CTR_ENC .Lctr_enc_done: vst1.8 {q0}, [r3] /* store IV */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) .Lctr_enc_skip: pop {r4-r12,lr} vpop {q4-q7} bx lr .Lctr_overflow_one: adcs r9, #0 adcs r8, #0 adc r7, #0 rev r11, r9 rev r12, r8 vmov.32 d1[0], r11 rev r11, r7 vmov.32 d0[1], r12 vmov.32 d0[0], r11 bx lr .size _gcry_aes_ctr_enc_armv8_ce,.-_gcry_aes_ctr_enc_armv8_ce; /* * void _gcry_aes_ocb_enc_armv8_ce (const void *keysched, * unsigned char *outbuf, * const unsigned char *inbuf, * unsigned char *offset, * unsigned char *checksum, * unsigned char *L_table, * size_t nblocks, * unsigned int nrounds, * unsigned int blkn); */ .align 3 .globl _gcry_aes_ocb_enc_armv8_ce .type _gcry_aes_ocb_enc_armv8_ce,%function; _gcry_aes_ocb_enc_armv8_ce: /* input: * r0: keysched * r1: outbuf * r2: inbuf * r3: offset * %st+0: checksum => r4 * %st+4: Ls => r5 * %st+8: nblocks => r6 (0 < nblocks <= 32) * %st+12: nrounds => r7 * %st+16: blkn => lr */ vpush {q4-q7} push {r4-r12,lr} /* 4*16 + 4*10 = 104b */ ldr r7, [sp, #(104+12)] ldr r4, [sp, #(104+0)] ldr r5, [sp, #(104+4)] ldr r6, [sp, #(104+8)] ldr lr, [sp, #(104+16)] cmp r7, #12 vld1.8 {q0}, [r3] /* load offset */ aes_preload_keys(r0, r12); beq .Locb_enc_entry_192 bhi .Locb_enc_entry_256 #define OCB_ENC(bits, ...) \ .Locb_enc_entry_##bits: \ cmp r6, #4; \ add lr, #1; \ blo .Locb_enc_loop_##bits; \ \ .Locb_enc_loop4_##bits: \ \ /* Offset_i = Offset_{i-1} xor L_{ntz(i)} */ \ /* Checksum_i = Checksum_{i-1} xor P_i */ \ /* C_i = Offset_i xor ENCIPHER(K, P_i xor Offset_i) */ \ \ add r9, lr, #1; \ add r10, lr, #2; \ add r11, lr, #3; \ rbit r8, lr; \ add lr, lr, #4; \ rbit r9, r9; \ rbit r10, r10; \ rbit r11, r11; \ clz r8, r8; /* ntz(i+0) */ \ clz r9, r9; /* ntz(i+1) */ \ clz r10, r10; /* ntz(i+2) */ \ clz r11, r11; /* ntz(i+3) */ \ add r8, r5, r8, lsl #4; \ add r9, r5, r9, lsl #4; \ add r10, r5, r10, lsl #4; \ add r11, r5, r11, lsl #4; \ \ sub r6, #4; \ \ vld1.8 {q9}, [r8]; /* load L_{ntz(i+0)} */ \ vld1.8 {q1-q2}, [r2]!; /* load P_i+<0-1> */ \ vld1.8 {q8}, [r4]; /* load Checksum_{i-1} */ \ veor q0, q0, q9; /* Offset_i+0 */ \ vld1.8 {q9}, [r9]; /* load L_{ntz(i+1)} */ \ veor q8, q8, q1; /* Checksum_i+0 */ \ veor q1, q1, q0; /* P_i+0 xor Offset_i+0 */\ vld1.8 {q3-q4}, [r2]!; /* load P_i+<2-3> */ \ vst1.8 {q0}, [r1]!; /* store Offset_i+0 */\ veor q0, q0, q9; /* Offset_i+1 */ \ vld1.8 {q9}, [r10]; /* load L_{ntz(i+2)} */ \ veor q8, q8, q2; /* Checksum_i+1 */ \ veor q2, q2, q0; /* P_i+1 xor Offset_i+1 */\ vst1.8 {q0}, [r1]!; /* store Offset_i+1 */\ veor q0, q0, q9; /* Offset_i+2 */ \ vld1.8 {q9}, [r11]; /* load L_{ntz(i+3)} */ \ veor q8, q8, q3; /* Checksum_i+2 */ \ veor q3, q3, q0; /* P_i+2 xor Offset_i+2 */\ vst1.8 {q0}, [r1]!; /* store Offset_i+2 */\ veor q0, q0, q9; /* Offset_i+3 */ \ veor q8, q8, q4; /* Checksum_i+3 */ \ veor q4, q4, q0; /* P_i+3 xor Offset_i+3 */\ vst1.8 {q0}, [r1]; /* store Offset_i+3 */\ sub r1, #(3*16); \ vst1.8 {q8}, [r4]; /* store Checksum_i+3 */\ \ cmp r6, #4; \ \ do_aes_4_##bits(e, mc, q1, q2, q3, q4, ##__VA_ARGS__); \ \ mov r8, r1; \ vld1.8 {q8-q9}, [r1]!; \ veor q1, q1, q8; \ veor q2, q2, q9; \ vld1.8 {q8-q9}, [r1]!; \ vst1.8 {q1-q2}, [r8]!; \ veor q3, q3, q8; \ veor q4, q4, q9; \ vst1.8 {q3-q4}, [r8]; \ \ bhs .Locb_enc_loop4_##bits; \ cmp r6, #0; \ beq .Locb_enc_done; \ \ .Locb_enc_loop_##bits: \ \ /* Offset_i = Offset_{i-1} xor L_{ntz(i)} */ \ /* Checksum_i = Checksum_{i-1} xor P_i */ \ /* C_i = Offset_i xor ENCIPHER(K, P_i xor Offset_i) */ \ \ rbit r8, lr; \ add lr, #1; \ clz r8, r8; /* ntz(i) */ \ add r8, r5, r8, lsl #4; \ \ vld1.8 {q1}, [r2]!; /* load plaintext */ \ vld1.8 {q2}, [r8]; /* load L_{ntz(i)} */ \ vld1.8 {q3}, [r4]; /* load checksum */ \ subs r6, #1; \ veor q0, q0, q2; \ veor q3, q3, q1; \ veor q1, q1, q0; \ vst1.8 {q3}, [r4]; /* store checksum */ \ \ do_aes_one##bits(e, mc, q1, q1, ##__VA_ARGS__); \ \ veor q1, q1, q0; \ vst1.8 {q1}, [r1]!; /* store ciphertext */ \ \ bne .Locb_enc_loop_##bits; \ b .Locb_enc_done; OCB_ENC(128re, r0, r12) OCB_ENC(192, r0, r12) OCB_ENC(256, r0, r12) #undef OCB_ENC .Locb_enc_done: vst1.8 {q0}, [r3] /* store offset */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) pop {r4-r12,lr} vpop {q4-q7} bx lr .size _gcry_aes_ocb_enc_armv8_ce,.-_gcry_aes_ocb_enc_armv8_ce; /* * void _gcry_aes_ocb_dec_armv8_ce (const void *keysched, * unsigned char *outbuf, * const unsigned char *inbuf, * unsigned char *offset, * unsigned char *checksum, * unsigned char *L_table, * size_t nblocks, * unsigned int nrounds, * unsigned int blkn); */ .align 3 .globl _gcry_aes_ocb_dec_armv8_ce .type _gcry_aes_ocb_dec_armv8_ce,%function; _gcry_aes_ocb_dec_armv8_ce: /* input: * r0: keysched * r1: outbuf * r2: inbuf * r3: offset * %st+0: checksum => r4 * %st+4: Ls => r5 * %st+8: nblocks => r6 (0 < nblocks <= 32) * %st+12: nrounds => r7 * %st+16: blkn => lr */ vpush {q4-q7} push {r4-r12,lr} /* 4*16 + 4*10 = 104b */ ldr r7, [sp, #(104+12)] ldr r4, [sp, #(104+0)] ldr r5, [sp, #(104+4)] ldr r6, [sp, #(104+8)] ldr lr, [sp, #(104+16)] cmp r7, #12 vld1.8 {q0}, [r3] /* load offset */ aes_preload_keys(r0, r12); beq .Locb_dec_entry_192 bhi .Locb_dec_entry_256 #define OCB_DEC(bits, ...) \ .Locb_dec_entry_##bits: \ cmp r6, #4; \ add lr, #1; \ blo .Locb_dec_loop_##bits; \ \ .Locb_dec_loop4_##bits: \ \ /* Offset_i = Offset_{i-1} xor L_{ntz(i)} */ \ /* P_i = Offset_i xor DECIPHER(K, C_i xor Offset_i) */ \ /* Checksum_i = Checksum_{i-1} xor P_i */ \ \ add r9, lr, #1; \ add r10, lr, #2; \ add r11, lr, #3; \ rbit r8, lr; \ add lr, lr, #4; \ rbit r9, r9; \ rbit r10, r10; \ rbit r11, r11; \ clz r8, r8; /* ntz(i+0) */ \ clz r9, r9; /* ntz(i+1) */ \ clz r10, r10; /* ntz(i+2) */ \ clz r11, r11; /* ntz(i+3) */ \ add r8, r5, r8, lsl #4; \ add r9, r5, r9, lsl #4; \ add r10, r5, r10, lsl #4; \ add r11, r5, r11, lsl #4; \ \ sub r6, #4; \ \ vld1.8 {q9}, [r8]; /* load L_{ntz(i+0)} */ \ vld1.8 {q1-q2}, [r2]!; /* load P_i+<0-1> */ \ veor q0, q0, q9; /* Offset_i+0 */ \ vld1.8 {q9}, [r9]; /* load L_{ntz(i+1)} */ \ veor q1, q1, q0; /* P_i+0 xor Offset_i+0 */\ vld1.8 {q3-q4}, [r2]!; /* load P_i+<2-3> */ \ vst1.8 {q0}, [r1]!; /* store Offset_i+0 */\ veor q0, q0, q9; /* Offset_i+1 */ \ vld1.8 {q9}, [r10]; /* load L_{ntz(i+2)} */ \ veor q2, q2, q0; /* P_i+1 xor Offset_i+1 */\ vst1.8 {q0}, [r1]!; /* store Offset_i+1 */\ veor q0, q0, q9; /* Offset_i+2 */ \ vld1.8 {q9}, [r11]; /* load L_{ntz(i+3)} */ \ veor q3, q3, q0; /* P_i+2 xor Offset_i+2 */\ vst1.8 {q0}, [r1]!; /* store Offset_i+2 */\ veor q0, q0, q9; /* Offset_i+3 */ \ veor q4, q4, q0; /* P_i+3 xor Offset_i+3 */\ vst1.8 {q0}, [r1]; /* store Offset_i+3 */\ sub r1, #(3*16); \ \ cmp r6, #4; \ \ do_aes_4_##bits(d, imc, q1, q2, q3, q4, ##__VA_ARGS__); \ \ mov r8, r1; \ vld1.8 {q8-q9}, [r1]!; \ veor q1, q1, q8; \ veor q2, q2, q9; \ vld1.8 {q8-q9}, [r1]!; \ vst1.8 {q1-q2}, [r8]!; \ veor q1, q1, q2; \ vld1.8 {q2}, [r4]; /* load Checksum_{i-1} */ \ veor q3, q3, q8; \ veor q1, q1, q3; \ veor q4, q4, q9; \ veor q1, q1, q4; \ vst1.8 {q3-q4}, [r8]; \ veor q2, q2, q1; \ vst1.8 {q2}, [r4]; /* store Checksum_i+3 */ \ \ bhs .Locb_dec_loop4_##bits; \ cmp r6, #0; \ beq .Locb_dec_done; \ \ .Locb_dec_loop_##bits: \ \ /* Offset_i = Offset_{i-1} xor L_{ntz(i)} */ \ /* P_i = Offset_i xor DECIPHER(K, C_i xor Offset_i) */ \ /* Checksum_i = Checksum_{i-1} xor P_i */ \ \ rbit r8, lr; \ add lr, #1; \ clz r8, r8; /* ntz(i) */ \ add r8, r5, r8, lsl #4; \ \ vld1.8 {q2}, [r8]; /* load L_{ntz(i)} */ \ vld1.8 {q1}, [r2]!; /* load ciphertext */ \ subs r6, #1; \ veor q0, q0, q2; \ veor q1, q1, q0; \ \ do_aes_one##bits(d, imc, q1, q1, ##__VA_ARGS__) \ \ vld1.8 {q2}, [r4]; /* load checksum */ \ veor q1, q1, q0; \ vst1.8 {q1}, [r1]!; /* store plaintext */ \ veor q2, q2, q1; \ vst1.8 {q2}, [r4]; /* store checksum */ \ \ bne .Locb_dec_loop_##bits; \ b .Locb_dec_done; OCB_DEC(128re, r0, r12) OCB_DEC(192, r0, r12) OCB_DEC(256, r0, r12) #undef OCB_DEC .Locb_dec_done: vst1.8 {q0}, [r3] /* store offset */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) pop {r4-r12,lr} vpop {q4-q7} bx lr .size _gcry_aes_ocb_dec_armv8_ce,.-_gcry_aes_ocb_dec_armv8_ce; /* * void _gcry_aes_ocb_auth_armv8_ce (const void *keysched, * const unsigned char *abuf, * unsigned char *offset, * unsigned char *checksum, * unsigned char *L_table, * size_t nblocks, * unsigned int nrounds, * unsigned int blkn); */ .align 3 .globl _gcry_aes_ocb_auth_armv8_ce .type _gcry_aes_ocb_auth_armv8_ce,%function; _gcry_aes_ocb_auth_armv8_ce: /* input: * r0: keysched * r1: abuf * r2: offset * r3: checksum * %st+0: Ls => r5 * %st+4: nblocks => r6 (0 < nblocks <= 32) * %st+8: nrounds => r7 * %st+12: blkn => lr */ vpush {q4-q7} push {r4-r12,lr} /* 4*16 + 4*10 = 104b */ ldr r7, [sp, #(104+8)] ldr r5, [sp, #(104+0)] ldr r6, [sp, #(104+4)] ldr lr, [sp, #(104+12)] cmp r7, #12 vld1.8 {q0}, [r2] /* load offset */ aes_preload_keys(r0, r12); beq .Locb_auth_entry_192 bhi .Locb_auth_entry_256 #define OCB_AUTH(bits, ...) \ .Locb_auth_entry_##bits: \ cmp r6, #4; \ add lr, #1; \ blo .Locb_auth_loop_##bits; \ \ .Locb_auth_loop4_##bits: \ \ /* Offset_i = Offset_{i-1} xor L_{ntz(i)} */ \ /* Sum_i = Sum_{i-1} xor ENCIPHER(K, A_i xor Offset_i) */ \ \ add r9, lr, #1; \ add r10, lr, #2; \ add r11, lr, #3; \ rbit r8, lr; \ add lr, lr, #4; \ rbit r9, r9; \ rbit r10, r10; \ rbit r11, r11; \ clz r8, r8; /* ntz(i+0) */ \ clz r9, r9; /* ntz(i+1) */ \ clz r10, r10; /* ntz(i+2) */ \ clz r11, r11; /* ntz(i+3) */ \ add r8, r5, r8, lsl #4; \ add r9, r5, r9, lsl #4; \ add r10, r5, r10, lsl #4; \ add r11, r5, r11, lsl #4; \ \ sub r6, #4; \ \ vld1.8 {q9}, [r8]; /* load L_{ntz(i+0)} */ \ vld1.8 {q1-q2}, [r1]!; /* load A_i+<0-1> */ \ veor q0, q0, q9; /* Offset_i+0 */ \ vld1.8 {q9}, [r9]; /* load L_{ntz(i+1)} */ \ veor q1, q1, q0; /* A_i+0 xor Offset_i+0 */\ vld1.8 {q3-q4}, [r1]!; /* load A_i+<2-3> */ \ veor q0, q0, q9; /* Offset_i+1 */ \ vld1.8 {q9}, [r10]; /* load L_{ntz(i+2)} */ \ veor q2, q2, q0; /* A_i+1 xor Offset_i+1 */\ veor q0, q0, q9; /* Offset_i+2 */ \ vld1.8 {q9}, [r11]; /* load L_{ntz(i+3)} */ \ veor q3, q3, q0; /* A_i+2 xor Offset_i+2 */\ veor q0, q0, q9; /* Offset_i+3 */ \ veor q4, q4, q0; /* A_i+3 xor Offset_i+3 */\ \ cmp r6, #4; \ \ do_aes_4_##bits(e, mc, q1, q2, q3, q4, ##__VA_ARGS__); \ \ veor q1, q1, q2; \ veor q3, q3, q4; \ vld1.8 {q2}, [r3]; \ veor q1, q1, q3; \ veor q2, q2, q1; \ vst1.8 {q2}, [r3]; \ \ bhs .Locb_auth_loop4_##bits; \ cmp r6, #0; \ beq .Locb_auth_done; \ \ .Locb_auth_loop_##bits: \ \ /* Offset_i = Offset_{i-1} xor L_{ntz(i)} */ \ /* Sum_i = Sum_{i-1} xor ENCIPHER(K, A_i xor Offset_i) */ \ \ rbit r8, lr; \ add lr, #1; \ clz r8, r8; /* ntz(i) */ \ add r8, r5, r8, lsl #4; \ \ vld1.8 {q2}, [r8]; /* load L_{ntz(i)} */ \ vld1.8 {q1}, [r1]!; /* load aadtext */ \ subs r6, #1; \ veor q0, q0, q2; \ vld1.8 {q2}, [r3]; /* load checksum */ \ veor q1, q1, q0; \ \ do_aes_one##bits(e, mc, q1, q1, ##__VA_ARGS__) \ \ veor q2, q2, q1; \ vst1.8 {q2}, [r3]; /* store checksum */ \ \ bne .Locb_auth_loop_##bits; \ b .Locb_auth_done; OCB_AUTH(128re, r0, r12) OCB_AUTH(192, r0, r12) OCB_AUTH(256, r0, r12) #undef OCB_AUTH .Locb_auth_done: vst1.8 {q0}, [r2] /* store offset */ CLEAR_REG(q0) CLEAR_REG(q1) CLEAR_REG(q2) CLEAR_REG(q3) CLEAR_REG(q8) CLEAR_REG(q9) CLEAR_REG(q10) CLEAR_REG(q11) CLEAR_REG(q12) CLEAR_REG(q13) CLEAR_REG(q14) pop {r4-r12,lr} vpop {q4-q7} bx lr .size _gcry_aes_ocb_auth_armv8_ce,.-_gcry_aes_ocb_auth_armv8_ce; /* * u32 _gcry_aes_sbox4_armv8_ce(u32 in4b); */ .align 3 .globl _gcry_aes_sbox4_armv8_ce .type _gcry_aes_sbox4_armv8_ce,%function; _gcry_aes_sbox4_armv8_ce: /* See "Gouvêa, C. P. L. & López, J. Implementing GCM on ARMv8. Topics in * Cryptology — CT-RSA 2015" for details. */ vmov.i8 q0, #0x52 vmov.i8 q1, #0 vmov s0, r0 aese.8 q0, q1 veor d0, d1 vpadd.i32 d0, d0, d1 vmov r0, s0 CLEAR_REG(q0) bx lr .size _gcry_aes_sbox4_armv8_ce,.-_gcry_aes_sbox4_armv8_ce; /* * void _gcry_aes_invmixcol_armv8_ce(void *dst, const void *src); */ .align 3 .globl _gcry_aes_invmixcol_armv8_ce .type _gcry_aes_invmixcol_armv8_ce,%function; _gcry_aes_invmixcol_armv8_ce: vld1.8 {q0}, [r1] aesimc.8 q0, q0 vst1.8 {q0}, [r0] CLEAR_REG(q0) bx lr .size _gcry_aes_invmixcol_armv8_ce,.-_gcry_aes_invmixcol_armv8_ce; #endif