diff options
Diffstat (limited to 'third_party/boringssl/core/cortex-m/ghash.S')
-rw-r--r-- | third_party/boringssl/core/cortex-m/ghash.S | 580 |
1 files changed, 580 insertions, 0 deletions
diff --git a/third_party/boringssl/core/cortex-m/ghash.S b/third_party/boringssl/core/cortex-m/ghash.S new file mode 100644 index 0000000000..fafcb5c23b --- /dev/null +++ b/third_party/boringssl/core/cortex-m/ghash.S @@ -0,0 +1,580 @@ +@ Generated by crypto/fipsmodule/modes/asm/ghash-armv4.pl, which carries +@ this license: +@ +@ Copyright 2010-2016 The OpenSSL Project Authors. All Rights Reserved. +@ +@ Licensed under the OpenSSL license (the "License"). You may not use +@ this file except in compliance with the License. You can obtain a copy +@ in the file LICENSE in the source distribution or at +@ https://www.openssl.org/source/license.html + +#include <openssl/arm_arch.h> + +@ Silence ARMv8 deprecated IT instruction warnings. This file is used by both +@ ARMv7 and ARMv8 processors and does not use ARMv8 instructions. (ARMv8 PMULL +@ instructions are in aesv8-armx.pl.) +.arch armv7-a + +.text +#if defined(__thumb2__) || defined(__clang__) +.syntax unified +#endif +#if defined(__thumb2__) +.thumb +#else +.code 32 +#endif + +#ifdef __clang__ +#define ldrplb ldrbpl +#define ldrneb ldrbne +#endif + +.type rem_4bit,%object +.align 5 +rem_4bit: +.short 0x0000,0x1C20,0x3840,0x2460 +.short 0x7080,0x6CA0,0x48C0,0x54E0 +.short 0xE100,0xFD20,0xD940,0xC560 +.short 0x9180,0x8DA0,0xA9C0,0xB5E0 +.size rem_4bit,.-rem_4bit + +.type rem_4bit_get,%function +rem_4bit_get: +#if defined(__thumb2__) + adr r2,rem_4bit +#else + sub r2,pc,#8+32 @ &rem_4bit +#endif + b .Lrem_4bit_got + nop + nop +.size rem_4bit_get,.-rem_4bit_get + +.global gcm_ghash_4bit +.type gcm_ghash_4bit,%function +.align 4 +gcm_ghash_4bit: +#if defined(__thumb2__) + adr r12,rem_4bit +#else + sub r12,pc,#8+48 @ &rem_4bit +#endif + add r3,r2,r3 @ r3 to point at the end + stmdb sp!,{r3-r11,lr} @ save r3/end too + + ldmia r12,{r4-r11} @ copy rem_4bit ... + stmdb sp!,{r4-r11} @ ... to stack + + ldrb r12,[r2,#15] + ldrb r14,[r0,#15] +.Louter: + eor r12,r12,r14 + and r14,r12,#0xf0 + and r12,r12,#0x0f + mov r3,#14 + + add r7,r1,r12,lsl#4 + ldmia r7,{r4-r7} @ load Htbl[nlo] + add r11,r1,r14 + ldrb r12,[r2,#14] + + and r14,r4,#0xf @ rem + ldmia r11,{r8-r11} @ load Htbl[nhi] + add r14,r14,r14 + eor r4,r8,r4,lsr#4 + ldrh r8,[sp,r14] @ rem_4bit[rem] + eor r4,r4,r5,lsl#28 + ldrb r14,[r0,#14] + eor r5,r9,r5,lsr#4 + eor r5,r5,r6,lsl#28 + eor r6,r10,r6,lsr#4 + eor r6,r6,r7,lsl#28 + eor r7,r11,r7,lsr#4 + eor r12,r12,r14 + and r14,r12,#0xf0 + and r12,r12,#0x0f + eor r7,r7,r8,lsl#16 + +.Linner: + add r11,r1,r12,lsl#4 + and r12,r4,#0xf @ rem + subs r3,r3,#1 + add r12,r12,r12 + ldmia r11,{r8-r11} @ load Htbl[nlo] + eor r4,r8,r4,lsr#4 + eor r4,r4,r5,lsl#28 + eor r5,r9,r5,lsr#4 + eor r5,r5,r6,lsl#28 + ldrh r8,[sp,r12] @ rem_4bit[rem] + eor r6,r10,r6,lsr#4 +#ifdef __thumb2__ + it pl +#endif + ldrplb r12,[r2,r3] + eor r6,r6,r7,lsl#28 + eor r7,r11,r7,lsr#4 + + add r11,r1,r14 + and r14,r4,#0xf @ rem + eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem] + add r14,r14,r14 + ldmia r11,{r8-r11} @ load Htbl[nhi] + eor r4,r8,r4,lsr#4 +#ifdef __thumb2__ + it pl +#endif + ldrplb r8,[r0,r3] + eor r4,r4,r5,lsl#28 + eor r5,r9,r5,lsr#4 + ldrh r9,[sp,r14] + eor r5,r5,r6,lsl#28 + eor r6,r10,r6,lsr#4 + eor r6,r6,r7,lsl#28 +#ifdef __thumb2__ + it pl +#endif + eorpl r12,r12,r8 + eor r7,r11,r7,lsr#4 +#ifdef __thumb2__ + itt pl +#endif + andpl r14,r12,#0xf0 + andpl r12,r12,#0x0f + eor r7,r7,r9,lsl#16 @ ^= rem_4bit[rem] + bpl .Linner + + ldr r3,[sp,#32] @ re-load r3/end + add r2,r2,#16 + mov r14,r4 +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r4,r4 + str r4,[r0,#12] +#elif defined(__ARMEB__) + str r4,[r0,#12] +#else + mov r9,r4,lsr#8 + strb r4,[r0,#12+3] + mov r10,r4,lsr#16 + strb r9,[r0,#12+2] + mov r11,r4,lsr#24 + strb r10,[r0,#12+1] + strb r11,[r0,#12] +#endif + cmp r2,r3 +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r5,r5 + str r5,[r0,#8] +#elif defined(__ARMEB__) + str r5,[r0,#8] +#else + mov r9,r5,lsr#8 + strb r5,[r0,#8+3] + mov r10,r5,lsr#16 + strb r9,[r0,#8+2] + mov r11,r5,lsr#24 + strb r10,[r0,#8+1] + strb r11,[r0,#8] +#endif + +#ifdef __thumb2__ + it ne +#endif + ldrneb r12,[r2,#15] +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r6,r6 + str r6,[r0,#4] +#elif defined(__ARMEB__) + str r6,[r0,#4] +#else + mov r9,r6,lsr#8 + strb r6,[r0,#4+3] + mov r10,r6,lsr#16 + strb r9,[r0,#4+2] + mov r11,r6,lsr#24 + strb r10,[r0,#4+1] + strb r11,[r0,#4] +#endif + +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r7,r7 + str r7,[r0,#0] +#elif defined(__ARMEB__) + str r7,[r0,#0] +#else + mov r9,r7,lsr#8 + strb r7,[r0,#0+3] + mov r10,r7,lsr#16 + strb r9,[r0,#0+2] + mov r11,r7,lsr#24 + strb r10,[r0,#0+1] + strb r11,[r0,#0] +#endif + + bne .Louter + + add sp,sp,#36 +#if __ARM_ARCH__>=5 + ldmia sp!,{r4-r11,pc} +#else + ldmia sp!,{r4-r11,lr} + tst lr,#1 + moveq pc,lr @ be binary compatible with V4, yet + .word 0xe12fff1e @ interoperable with Thumb ISA:-) +#endif +.size gcm_ghash_4bit,.-gcm_ghash_4bit + +.global gcm_gmult_4bit +.type gcm_gmult_4bit,%function +gcm_gmult_4bit: + stmdb sp!,{r4-r11,lr} + ldrb r12,[r0,#15] + b rem_4bit_get +.Lrem_4bit_got: + and r14,r12,#0xf0 + and r12,r12,#0x0f + mov r3,#14 + + add r7,r1,r12,lsl#4 + ldmia r7,{r4-r7} @ load Htbl[nlo] + ldrb r12,[r0,#14] + + add r11,r1,r14 + and r14,r4,#0xf @ rem + ldmia r11,{r8-r11} @ load Htbl[nhi] + add r14,r14,r14 + eor r4,r8,r4,lsr#4 + ldrh r8,[r2,r14] @ rem_4bit[rem] + eor r4,r4,r5,lsl#28 + eor r5,r9,r5,lsr#4 + eor r5,r5,r6,lsl#28 + eor r6,r10,r6,lsr#4 + eor r6,r6,r7,lsl#28 + eor r7,r11,r7,lsr#4 + and r14,r12,#0xf0 + eor r7,r7,r8,lsl#16 + and r12,r12,#0x0f + +.Loop: + add r11,r1,r12,lsl#4 + and r12,r4,#0xf @ rem + subs r3,r3,#1 + add r12,r12,r12 + ldmia r11,{r8-r11} @ load Htbl[nlo] + eor r4,r8,r4,lsr#4 + eor r4,r4,r5,lsl#28 + eor r5,r9,r5,lsr#4 + eor r5,r5,r6,lsl#28 + ldrh r8,[r2,r12] @ rem_4bit[rem] + eor r6,r10,r6,lsr#4 +#ifdef __thumb2__ + it pl +#endif + ldrplb r12,[r0,r3] + eor r6,r6,r7,lsl#28 + eor r7,r11,r7,lsr#4 + + add r11,r1,r14 + and r14,r4,#0xf @ rem + eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem] + add r14,r14,r14 + ldmia r11,{r8-r11} @ load Htbl[nhi] + eor r4,r8,r4,lsr#4 + eor r4,r4,r5,lsl#28 + eor r5,r9,r5,lsr#4 + ldrh r8,[r2,r14] @ rem_4bit[rem] + eor r5,r5,r6,lsl#28 + eor r6,r10,r6,lsr#4 + eor r6,r6,r7,lsl#28 + eor r7,r11,r7,lsr#4 +#ifdef __thumb2__ + itt pl +#endif + andpl r14,r12,#0xf0 + andpl r12,r12,#0x0f + eor r7,r7,r8,lsl#16 @ ^= rem_4bit[rem] + bpl .Loop +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r4,r4 + str r4,[r0,#12] +#elif defined(__ARMEB__) + str r4,[r0,#12] +#else + mov r9,r4,lsr#8 + strb r4,[r0,#12+3] + mov r10,r4,lsr#16 + strb r9,[r0,#12+2] + mov r11,r4,lsr#24 + strb r10,[r0,#12+1] + strb r11,[r0,#12] +#endif + +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r5,r5 + str r5,[r0,#8] +#elif defined(__ARMEB__) + str r5,[r0,#8] +#else + mov r9,r5,lsr#8 + strb r5,[r0,#8+3] + mov r10,r5,lsr#16 + strb r9,[r0,#8+2] + mov r11,r5,lsr#24 + strb r10,[r0,#8+1] + strb r11,[r0,#8] +#endif + +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r6,r6 + str r6,[r0,#4] +#elif defined(__ARMEB__) + str r6,[r0,#4] +#else + mov r9,r6,lsr#8 + strb r6,[r0,#4+3] + mov r10,r6,lsr#16 + strb r9,[r0,#4+2] + mov r11,r6,lsr#24 + strb r10,[r0,#4+1] + strb r11,[r0,#4] +#endif + +#if __ARM_ARCH__>=7 && defined(__ARMEL__) + rev r7,r7 + str r7,[r0,#0] +#elif defined(__ARMEB__) + str r7,[r0,#0] +#else + mov r9,r7,lsr#8 + strb r7,[r0,#0+3] + mov r10,r7,lsr#16 + strb r9,[r0,#0+2] + mov r11,r7,lsr#24 + strb r10,[r0,#0+1] + strb r11,[r0,#0] +#endif + +#if __ARM_ARCH__>=5 + ldmia sp!,{r4-r11,pc} +#else + ldmia sp!,{r4-r11,lr} + tst lr,#1 + moveq pc,lr @ be binary compatible with V4, yet + .word 0xe12fff1e @ interoperable with Thumb ISA:-) +#endif +.size gcm_gmult_4bit,.-gcm_gmult_4bit +#if __ARM_MAX_ARCH__>=7 +.arch armv7-a +.fpu neon + +.global gcm_init_neon +.type gcm_init_neon,%function +.align 4 +gcm_init_neon: + vld1.64 d7,[r1]! @ load H + vmov.i8 q8,#0xe1 + vld1.64 d6,[r1] + vshl.i64 d17,#57 + vshr.u64 d16,#63 @ t0=0xc2....01 + vdup.8 q9,d7[7] + vshr.u64 d26,d6,#63 + vshr.s8 q9,#7 @ broadcast carry bit + vshl.i64 q3,q3,#1 + vand q8,q8,q9 + vorr d7,d26 @ H<<<=1 + veor q3,q3,q8 @ twisted H + vstmia r0,{q3} + + bx lr @ bx lr +.size gcm_init_neon,.-gcm_init_neon + +.global gcm_gmult_neon +.type gcm_gmult_neon,%function +.align 4 +gcm_gmult_neon: + vld1.64 d7,[r0]! @ load Xi + vld1.64 d6,[r0]! + vmov.i64 d29,#0x0000ffffffffffff + vldmia r1,{d26-d27} @ load twisted H + vmov.i64 d30,#0x00000000ffffffff +#ifdef __ARMEL__ + vrev64.8 q3,q3 +#endif + vmov.i64 d31,#0x000000000000ffff + veor d28,d26,d27 @ Karatsuba pre-processing + mov r3,#16 + b .Lgmult_neon +.size gcm_gmult_neon,.-gcm_gmult_neon + +.global gcm_ghash_neon +.type gcm_ghash_neon,%function +.align 4 +gcm_ghash_neon: + vld1.64 d1,[r0]! @ load Xi + vld1.64 d0,[r0]! + vmov.i64 d29,#0x0000ffffffffffff + vldmia r1,{d26-d27} @ load twisted H + vmov.i64 d30,#0x00000000ffffffff +#ifdef __ARMEL__ + vrev64.8 q0,q0 +#endif + vmov.i64 d31,#0x000000000000ffff + veor d28,d26,d27 @ Karatsuba pre-processing + +.Loop_neon: + vld1.64 d7,[r2]! @ load inp + vld1.64 d6,[r2]! +#ifdef __ARMEL__ + vrev64.8 q3,q3 +#endif + veor q3,q0 @ inp^=Xi +.Lgmult_neon: + vext.8 d16, d26, d26, #1 @ A1 + vmull.p8 q8, d16, d6 @ F = A1*B + vext.8 d0, d6, d6, #1 @ B1 + vmull.p8 q0, d26, d0 @ E = A*B1 + vext.8 d18, d26, d26, #2 @ A2 + vmull.p8 q9, d18, d6 @ H = A2*B + vext.8 d22, d6, d6, #2 @ B2 + vmull.p8 q11, d26, d22 @ G = A*B2 + vext.8 d20, d26, d26, #3 @ A3 + veor q8, q8, q0 @ L = E + F + vmull.p8 q10, d20, d6 @ J = A3*B + vext.8 d0, d6, d6, #3 @ B3 + veor q9, q9, q11 @ M = G + H + vmull.p8 q0, d26, d0 @ I = A*B3 + veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8 + vand d17, d17, d29 + vext.8 d22, d6, d6, #4 @ B4 + veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16 + vand d19, d19, d30 + vmull.p8 q11, d26, d22 @ K = A*B4 + veor q10, q10, q0 @ N = I + J + veor d16, d16, d17 + veor d18, d18, d19 + veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24 + vand d21, d21, d31 + vext.8 q8, q8, q8, #15 + veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32 + vmov.i64 d23, #0 + vext.8 q9, q9, q9, #14 + veor d20, d20, d21 + vmull.p8 q0, d26, d6 @ D = A*B + vext.8 q11, q11, q11, #12 + vext.8 q10, q10, q10, #13 + veor q8, q8, q9 + veor q10, q10, q11 + veor q0, q0, q8 + veor q0, q0, q10 + veor d6,d6,d7 @ Karatsuba pre-processing + vext.8 d16, d28, d28, #1 @ A1 + vmull.p8 q8, d16, d6 @ F = A1*B + vext.8 d2, d6, d6, #1 @ B1 + vmull.p8 q1, d28, d2 @ E = A*B1 + vext.8 d18, d28, d28, #2 @ A2 + vmull.p8 q9, d18, d6 @ H = A2*B + vext.8 d22, d6, d6, #2 @ B2 + vmull.p8 q11, d28, d22 @ G = A*B2 + vext.8 d20, d28, d28, #3 @ A3 + veor q8, q8, q1 @ L = E + F + vmull.p8 q10, d20, d6 @ J = A3*B + vext.8 d2, d6, d6, #3 @ B3 + veor q9, q9, q11 @ M = G + H + vmull.p8 q1, d28, d2 @ I = A*B3 + veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8 + vand d17, d17, d29 + vext.8 d22, d6, d6, #4 @ B4 + veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16 + vand d19, d19, d30 + vmull.p8 q11, d28, d22 @ K = A*B4 + veor q10, q10, q1 @ N = I + J + veor d16, d16, d17 + veor d18, d18, d19 + veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24 + vand d21, d21, d31 + vext.8 q8, q8, q8, #15 + veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32 + vmov.i64 d23, #0 + vext.8 q9, q9, q9, #14 + veor d20, d20, d21 + vmull.p8 q1, d28, d6 @ D = A*B + vext.8 q11, q11, q11, #12 + vext.8 q10, q10, q10, #13 + veor q8, q8, q9 + veor q10, q10, q11 + veor q1, q1, q8 + veor q1, q1, q10 + vext.8 d16, d27, d27, #1 @ A1 + vmull.p8 q8, d16, d7 @ F = A1*B + vext.8 d4, d7, d7, #1 @ B1 + vmull.p8 q2, d27, d4 @ E = A*B1 + vext.8 d18, d27, d27, #2 @ A2 + vmull.p8 q9, d18, d7 @ H = A2*B + vext.8 d22, d7, d7, #2 @ B2 + vmull.p8 q11, d27, d22 @ G = A*B2 + vext.8 d20, d27, d27, #3 @ A3 + veor q8, q8, q2 @ L = E + F + vmull.p8 q10, d20, d7 @ J = A3*B + vext.8 d4, d7, d7, #3 @ B3 + veor q9, q9, q11 @ M = G + H + vmull.p8 q2, d27, d4 @ I = A*B3 + veor d16, d16, d17 @ t0 = (L) (P0 + P1) << 8 + vand d17, d17, d29 + vext.8 d22, d7, d7, #4 @ B4 + veor d18, d18, d19 @ t1 = (M) (P2 + P3) << 16 + vand d19, d19, d30 + vmull.p8 q11, d27, d22 @ K = A*B4 + veor q10, q10, q2 @ N = I + J + veor d16, d16, d17 + veor d18, d18, d19 + veor d20, d20, d21 @ t2 = (N) (P4 + P5) << 24 + vand d21, d21, d31 + vext.8 q8, q8, q8, #15 + veor d22, d22, d23 @ t3 = (K) (P6 + P7) << 32 + vmov.i64 d23, #0 + vext.8 q9, q9, q9, #14 + veor d20, d20, d21 + vmull.p8 q2, d27, d7 @ D = A*B + vext.8 q11, q11, q11, #12 + vext.8 q10, q10, q10, #13 + veor q8, q8, q9 + veor q10, q10, q11 + veor q2, q2, q8 + veor q2, q2, q10 + veor q1,q1,q0 @ Karatsuba post-processing + veor q1,q1,q2 + veor d1,d1,d2 + veor d4,d4,d3 @ Xh|Xl - 256-bit result + + @ equivalent of reduction_avx from ghash-x86_64.pl + vshl.i64 q9,q0,#57 @ 1st phase + vshl.i64 q10,q0,#62 + veor q10,q10,q9 @ + vshl.i64 q9,q0,#63 + veor q10, q10, q9 @ + veor d1,d1,d20 @ + veor d4,d4,d21 + + vshr.u64 q10,q0,#1 @ 2nd phase + veor q2,q2,q0 + veor q0,q0,q10 @ + vshr.u64 q10,q10,#6 + vshr.u64 q0,q0,#1 @ + veor q0,q0,q2 @ + veor q0,q0,q10 @ + + subs r3,#16 + bne .Loop_neon + +#ifdef __ARMEL__ + vrev64.8 q0,q0 +#endif + sub r0,#16 + vst1.64 d1,[r0]! @ write out Xi + vst1.64 d0,[r0] + + bx lr @ bx lr +.size gcm_ghash_neon,.-gcm_ghash_neon +#endif +.asciz "GHASH for ARMv4/NEON, CRYPTOGAMS by <appro@openssl.org>" +.align 2 |