| // This file is generated from a similarly-named Perl script in the BoringSSL |
| // source tree. Do not edit by hand. |
| |
| #if !defined(__has_feature) |
| #define __has_feature(x) 0 |
| #endif |
| #if __has_feature(memory_sanitizer) && !defined(OPENSSL_NO_ASM) |
| #define OPENSSL_NO_ASM |
| #endif |
| |
| #if !defined(OPENSSL_NO_ASM) && defined(__AARCH64EL__) && defined(__ELF__) |
| #if defined(BORINGSSL_PREFIX) |
| #include <boringssl_prefix_symbols_asm.h> |
| #endif |
| #include <openssl/arm_arch.h> |
| #if __ARM_MAX_ARCH__ >= 8 |
| |
| .arch armv8-a+crypto |
| .text |
| .globl aes_gcm_enc_kernel |
| .hidden aes_gcm_enc_kernel |
| .type aes_gcm_enc_kernel,%function |
| .align 4 |
| aes_gcm_enc_kernel: |
| AARCH64_SIGN_LINK_REGISTER |
| stp x29, x30, [sp, #-128]! |
| mov x29, sp |
| stp x19, x20, [sp, #16] |
| mov x16, x4 |
| mov x8, x5 |
| stp x21, x22, [sp, #32] |
| stp x23, x24, [sp, #48] |
| stp d8, d9, [sp, #64] |
| stp d10, d11, [sp, #80] |
| stp d12, d13, [sp, #96] |
| stp d14, d15, [sp, #112] |
| ldr w17, [x8, #240] |
| add x19, x8, x17, lsl #4 // borrow input_l1 for last key |
| ldp x13, x14, [x19] // load round N keys |
| ldr q31, [x19, #-16] // load round N-1 keys |
| add x4, x0, x1, lsr #3 // end_input_ptr |
| lsr x5, x1, #3 // byte_len |
| mov x15, x5 |
| ldp x10, x11, [x16] // ctr96_b64, ctr96_t32 |
| ld1 { v0.16b}, [x16] // special case vector load initial counter so we can start first AES block as quickly as possible |
| sub x5, x5, #1 // byte_len - 1 |
| ldr q18, [x8, #0] // load rk0 |
| and x5, x5, #0xffffffffffffffc0 // number of bytes to be processed in main loop (at least 1 byte must be handled by tail) |
| ldr q25, [x8, #112] // load rk7 |
| add x5, x5, x0 |
| lsr x12, x11, #32 |
| fmov d2, x10 // CTR block 2 |
| orr w11, w11, w11 |
| rev w12, w12 // rev_ctr32 |
| fmov d1, x10 // CTR block 1 |
| aese v0.16b, v18.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 0 |
| add w12, w12, #1 // increment rev_ctr32 |
| rev w9, w12 // CTR block 1 |
| fmov d3, x10 // CTR block 3 |
| orr x9, x11, x9, lsl #32 // CTR block 1 |
| add w12, w12, #1 // CTR block 1 |
| ldr q19, [x8, #16] // load rk1 |
| fmov v1.d[1], x9 // CTR block 1 |
| rev w9, w12 // CTR block 2 |
| add w12, w12, #1 // CTR block 2 |
| orr x9, x11, x9, lsl #32 // CTR block 2 |
| ldr q20, [x8, #32] // load rk2 |
| fmov v2.d[1], x9 // CTR block 2 |
| rev w9, w12 // CTR block 3 |
| aese v0.16b, v19.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 1 |
| orr x9, x11, x9, lsl #32 // CTR block 3 |
| fmov v3.d[1], x9 // CTR block 3 |
| aese v1.16b, v18.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 0 |
| ldr q21, [x8, #48] // load rk3 |
| aese v0.16b, v20.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 2 |
| ldr q24, [x8, #96] // load rk6 |
| aese v2.16b, v18.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 0 |
| ldr q23, [x8, #80] // load rk5 |
| aese v1.16b, v19.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 1 |
| ldr q14, [x3, #80] // load h3l | h3h |
| ext v14.16b, v14.16b, v14.16b, #8 |
| aese v3.16b, v18.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 0 |
| aese v2.16b, v19.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 1 |
| ldr q22, [x8, #64] // load rk4 |
| aese v1.16b, v20.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 2 |
| ldr q13, [x3, #64] // load h2l | h2h |
| ext v13.16b, v13.16b, v13.16b, #8 |
| aese v3.16b, v19.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 1 |
| ldr q30, [x8, #192] // load rk12 |
| aese v2.16b, v20.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 2 |
| ldr q15, [x3, #112] // load h4l | h4h |
| ext v15.16b, v15.16b, v15.16b, #8 |
| aese v1.16b, v21.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 3 |
| ldr q29, [x8, #176] // load rk11 |
| aese v3.16b, v20.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 2 |
| ldr q26, [x8, #128] // load rk8 |
| aese v2.16b, v21.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 3 |
| add w12, w12, #1 // CTR block 3 |
| aese v0.16b, v21.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 3 |
| aese v3.16b, v21.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 3 |
| ld1 { v11.16b}, [x3] |
| ext v11.16b, v11.16b, v11.16b, #8 |
| rev64 v11.16b, v11.16b |
| aese v2.16b, v22.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 4 |
| aese v0.16b, v22.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 4 |
| aese v1.16b, v22.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 4 |
| aese v3.16b, v22.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 4 |
| cmp x17, #12 // setup flags for AES-128/192/256 check |
| aese v0.16b, v23.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 5 |
| aese v1.16b, v23.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 5 |
| aese v3.16b, v23.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 5 |
| aese v2.16b, v23.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 5 |
| aese v1.16b, v24.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 6 |
| trn2 v17.2d, v14.2d, v15.2d // h4l | h3l |
| aese v3.16b, v24.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 6 |
| ldr q27, [x8, #144] // load rk9 |
| aese v0.16b, v24.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 6 |
| ldr q12, [x3, #32] // load h1l | h1h |
| ext v12.16b, v12.16b, v12.16b, #8 |
| aese v2.16b, v24.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 6 |
| ldr q28, [x8, #160] // load rk10 |
| aese v1.16b, v25.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 7 |
| trn1 v9.2d, v14.2d, v15.2d // h4h | h3h |
| aese v0.16b, v25.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 7 |
| aese v2.16b, v25.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 7 |
| aese v3.16b, v25.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 7 |
| trn2 v16.2d, v12.2d, v13.2d // h2l | h1l |
| aese v1.16b, v26.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 8 |
| aese v2.16b, v26.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 8 |
| aese v3.16b, v26.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 8 |
| aese v0.16b, v26.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 8 |
| b.lt .Lenc_finish_first_blocks // branch if AES-128 |
| |
| aese v1.16b, v27.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 9 |
| aese v2.16b, v27.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 9 |
| aese v3.16b, v27.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 9 |
| aese v0.16b, v27.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 9 |
| aese v1.16b, v28.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 10 |
| aese v2.16b, v28.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 10 |
| aese v3.16b, v28.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 10 |
| aese v0.16b, v28.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 10 |
| b.eq .Lenc_finish_first_blocks // branch if AES-192 |
| |
| aese v1.16b, v29.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 11 |
| aese v2.16b, v29.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 11 |
| aese v0.16b, v29.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 11 |
| aese v3.16b, v29.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 11 |
| aese v1.16b, v30.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 12 |
| aese v2.16b, v30.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 12 |
| aese v0.16b, v30.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 12 |
| aese v3.16b, v30.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 12 |
| |
| .Lenc_finish_first_blocks: |
| cmp x0, x5 // check if we have <= 4 blocks |
| eor v17.16b, v17.16b, v9.16b // h4k | h3k |
| aese v2.16b, v31.16b // AES block 2 - round N-1 |
| trn1 v8.2d, v12.2d, v13.2d // h2h | h1h |
| aese v1.16b, v31.16b // AES block 1 - round N-1 |
| aese v0.16b, v31.16b // AES block 0 - round N-1 |
| aese v3.16b, v31.16b // AES block 3 - round N-1 |
| eor v16.16b, v16.16b, v8.16b // h2k | h1k |
| b.ge .Lenc_tail // handle tail |
| |
| ldp x19, x20, [x0, #16] // AES block 1 - load plaintext |
| rev w9, w12 // CTR block 4 |
| ldp x6, x7, [x0, #0] // AES block 0 - load plaintext |
| ldp x23, x24, [x0, #48] // AES block 3 - load plaintext |
| ldp x21, x22, [x0, #32] // AES block 2 - load plaintext |
| add x0, x0, #64 // AES input_ptr update |
| eor x19, x19, x13 // AES block 1 - round N low |
| eor x20, x20, x14 // AES block 1 - round N high |
| fmov d5, x19 // AES block 1 - mov low |
| eor x6, x6, x13 // AES block 0 - round N low |
| eor x7, x7, x14 // AES block 0 - round N high |
| eor x24, x24, x14 // AES block 3 - round N high |
| fmov d4, x6 // AES block 0 - mov low |
| cmp x0, x5 // check if we have <= 8 blocks |
| fmov v4.d[1], x7 // AES block 0 - mov high |
| eor x23, x23, x13 // AES block 3 - round N low |
| eor x21, x21, x13 // AES block 2 - round N low |
| fmov v5.d[1], x20 // AES block 1 - mov high |
| fmov d6, x21 // AES block 2 - mov low |
| add w12, w12, #1 // CTR block 4 |
| orr x9, x11, x9, lsl #32 // CTR block 4 |
| fmov d7, x23 // AES block 3 - mov low |
| eor x22, x22, x14 // AES block 2 - round N high |
| fmov v6.d[1], x22 // AES block 2 - mov high |
| eor v4.16b, v4.16b, v0.16b // AES block 0 - result |
| fmov d0, x10 // CTR block 4 |
| fmov v0.d[1], x9 // CTR block 4 |
| rev w9, w12 // CTR block 5 |
| add w12, w12, #1 // CTR block 5 |
| eor v5.16b, v5.16b, v1.16b // AES block 1 - result |
| fmov d1, x10 // CTR block 5 |
| orr x9, x11, x9, lsl #32 // CTR block 5 |
| fmov v1.d[1], x9 // CTR block 5 |
| rev w9, w12 // CTR block 6 |
| st1 { v4.16b}, [x2], #16 // AES block 0 - store result |
| fmov v7.d[1], x24 // AES block 3 - mov high |
| orr x9, x11, x9, lsl #32 // CTR block 6 |
| eor v6.16b, v6.16b, v2.16b // AES block 2 - result |
| st1 { v5.16b}, [x2], #16 // AES block 1 - store result |
| add w12, w12, #1 // CTR block 6 |
| fmov d2, x10 // CTR block 6 |
| fmov v2.d[1], x9 // CTR block 6 |
| st1 { v6.16b}, [x2], #16 // AES block 2 - store result |
| rev w9, w12 // CTR block 7 |
| orr x9, x11, x9, lsl #32 // CTR block 7 |
| eor v7.16b, v7.16b, v3.16b // AES block 3 - result |
| st1 { v7.16b}, [x2], #16 // AES block 3 - store result |
| b.ge .Lenc_prepretail // do prepretail |
| |
| .Lenc_main_loop: // main loop start |
| aese v0.16b, v18.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 0 |
| rev64 v4.16b, v4.16b // GHASH block 4k (only t0 is free) |
| aese v1.16b, v18.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 0 |
| fmov d3, x10 // CTR block 4k+3 |
| aese v2.16b, v18.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 0 |
| ext v11.16b, v11.16b, v11.16b, #8 // PRE 0 |
| aese v0.16b, v19.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 1 |
| fmov v3.d[1], x9 // CTR block 4k+3 |
| aese v1.16b, v19.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 1 |
| ldp x23, x24, [x0, #48] // AES block 4k+7 - load plaintext |
| aese v2.16b, v19.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 1 |
| ldp x21, x22, [x0, #32] // AES block 4k+6 - load plaintext |
| aese v0.16b, v20.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 2 |
| eor v4.16b, v4.16b, v11.16b // PRE 1 |
| aese v1.16b, v20.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 2 |
| aese v3.16b, v18.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 0 |
| eor x23, x23, x13 // AES block 4k+7 - round N low |
| aese v0.16b, v21.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 3 |
| mov d10, v17.d[1] // GHASH block 4k - mid |
| pmull2 v9.1q, v4.2d, v15.2d // GHASH block 4k - high |
| eor x22, x22, x14 // AES block 4k+6 - round N high |
| mov d8, v4.d[1] // GHASH block 4k - mid |
| aese v3.16b, v19.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 1 |
| rev64 v5.16b, v5.16b // GHASH block 4k+1 (t0 and t1 free) |
| aese v0.16b, v22.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 4 |
| pmull v11.1q, v4.1d, v15.1d // GHASH block 4k - low |
| eor v8.8b, v8.8b, v4.8b // GHASH block 4k - mid |
| aese v2.16b, v20.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 2 |
| aese v0.16b, v23.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 5 |
| rev64 v7.16b, v7.16b // GHASH block 4k+3 (t0, t1, t2 and t3 free) |
| pmull2 v4.1q, v5.2d, v14.2d // GHASH block 4k+1 - high |
| pmull v10.1q, v8.1d, v10.1d // GHASH block 4k - mid |
| rev64 v6.16b, v6.16b // GHASH block 4k+2 (t0, t1, and t2 free) |
| pmull v8.1q, v5.1d, v14.1d // GHASH block 4k+1 - low |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+1 - high |
| mov d4, v5.d[1] // GHASH block 4k+1 - mid |
| aese v1.16b, v21.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 3 |
| aese v3.16b, v20.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 2 |
| eor v11.16b, v11.16b, v8.16b // GHASH block 4k+1 - low |
| aese v2.16b, v21.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 3 |
| aese v1.16b, v22.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 4 |
| mov d8, v6.d[1] // GHASH block 4k+2 - mid |
| aese v3.16b, v21.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 3 |
| eor v4.8b, v4.8b, v5.8b // GHASH block 4k+1 - mid |
| aese v2.16b, v22.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 4 |
| aese v0.16b, v24.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 6 |
| eor v8.8b, v8.8b, v6.8b // GHASH block 4k+2 - mid |
| aese v3.16b, v22.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 4 |
| pmull v4.1q, v4.1d, v17.1d // GHASH block 4k+1 - mid |
| aese v0.16b, v25.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 7 |
| aese v3.16b, v23.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 5 |
| ins v8.d[1], v8.d[0] // GHASH block 4k+2 - mid |
| aese v1.16b, v23.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 5 |
| aese v0.16b, v26.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 8 |
| aese v2.16b, v23.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 5 |
| aese v1.16b, v24.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 6 |
| eor v10.16b, v10.16b, v4.16b // GHASH block 4k+1 - mid |
| pmull2 v4.1q, v6.2d, v13.2d // GHASH block 4k+2 - high |
| pmull v5.1q, v6.1d, v13.1d // GHASH block 4k+2 - low |
| aese v1.16b, v25.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 7 |
| pmull v6.1q, v7.1d, v12.1d // GHASH block 4k+3 - low |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+2 - high |
| aese v3.16b, v24.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 6 |
| ldp x19, x20, [x0, #16] // AES block 4k+5 - load plaintext |
| aese v1.16b, v26.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 8 |
| mov d4, v7.d[1] // GHASH block 4k+3 - mid |
| aese v2.16b, v24.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 6 |
| eor v11.16b, v11.16b, v5.16b // GHASH block 4k+2 - low |
| pmull2 v8.1q, v8.2d, v16.2d // GHASH block 4k+2 - mid |
| pmull2 v5.1q, v7.2d, v12.2d // GHASH block 4k+3 - high |
| eor v4.8b, v4.8b, v7.8b // GHASH block 4k+3 - mid |
| aese v2.16b, v25.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 7 |
| eor x19, x19, x13 // AES block 4k+5 - round N low |
| aese v2.16b, v26.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 8 |
| eor v10.16b, v10.16b, v8.16b // GHASH block 4k+2 - mid |
| aese v3.16b, v25.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 7 |
| eor x21, x21, x13 // AES block 4k+6 - round N low |
| aese v3.16b, v26.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 8 |
| movi v8.8b, #0xc2 |
| pmull v4.1q, v4.1d, v16.1d // GHASH block 4k+3 - mid |
| eor v9.16b, v9.16b, v5.16b // GHASH block 4k+3 - high |
| cmp x17, #12 // setup flags for AES-128/192/256 check |
| fmov d5, x19 // AES block 4k+5 - mov low |
| ldp x6, x7, [x0, #0] // AES block 4k+4 - load plaintext |
| b.lt .Lenc_main_loop_continue // branch if AES-128 |
| |
| aese v1.16b, v27.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 9 |
| aese v0.16b, v27.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 9 |
| aese v2.16b, v27.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 9 |
| aese v3.16b, v27.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 9 |
| aese v0.16b, v28.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 10 |
| aese v1.16b, v28.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 10 |
| aese v2.16b, v28.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 10 |
| aese v3.16b, v28.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 10 |
| b.eq .Lenc_main_loop_continue // branch if AES-192 |
| |
| aese v0.16b, v29.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 11 |
| aese v1.16b, v29.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 11 |
| aese v2.16b, v29.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 11 |
| aese v3.16b, v29.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 11 |
| aese v1.16b, v30.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 12 |
| aese v0.16b, v30.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 12 |
| aese v2.16b, v30.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 12 |
| aese v3.16b, v30.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 12 |
| |
| .Lenc_main_loop_continue: |
| shl d8, d8, #56 // mod_constant |
| eor v11.16b, v11.16b, v6.16b // GHASH block 4k+3 - low |
| eor v10.16b, v10.16b, v4.16b // GHASH block 4k+3 - mid |
| add w12, w12, #1 // CTR block 4k+3 |
| eor v4.16b, v11.16b, v9.16b // MODULO - karatsuba tidy up |
| add x0, x0, #64 // AES input_ptr update |
| pmull v7.1q, v9.1d, v8.1d // MODULO - top 64b align with mid |
| rev w9, w12 // CTR block 4k+8 |
| ext v9.16b, v9.16b, v9.16b, #8 // MODULO - other top alignment |
| eor x6, x6, x13 // AES block 4k+4 - round N low |
| eor v10.16b, v10.16b, v4.16b // MODULO - karatsuba tidy up |
| eor x7, x7, x14 // AES block 4k+4 - round N high |
| fmov d4, x6 // AES block 4k+4 - mov low |
| orr x9, x11, x9, lsl #32 // CTR block 4k+8 |
| eor v7.16b, v9.16b, v7.16b // MODULO - fold into mid |
| eor x20, x20, x14 // AES block 4k+5 - round N high |
| eor x24, x24, x14 // AES block 4k+7 - round N high |
| add w12, w12, #1 // CTR block 4k+8 |
| aese v0.16b, v31.16b // AES block 4k+4 - round N-1 |
| fmov v4.d[1], x7 // AES block 4k+4 - mov high |
| eor v10.16b, v10.16b, v7.16b // MODULO - fold into mid |
| fmov d7, x23 // AES block 4k+7 - mov low |
| aese v1.16b, v31.16b // AES block 4k+5 - round N-1 |
| fmov v5.d[1], x20 // AES block 4k+5 - mov high |
| fmov d6, x21 // AES block 4k+6 - mov low |
| cmp x0, x5 // .LOOP CONTROL |
| fmov v6.d[1], x22 // AES block 4k+6 - mov high |
| pmull v9.1q, v10.1d, v8.1d // MODULO - mid 64b align with low |
| eor v4.16b, v4.16b, v0.16b // AES block 4k+4 - result |
| fmov d0, x10 // CTR block 4k+8 |
| fmov v0.d[1], x9 // CTR block 4k+8 |
| rev w9, w12 // CTR block 4k+9 |
| add w12, w12, #1 // CTR block 4k+9 |
| eor v5.16b, v5.16b, v1.16b // AES block 4k+5 - result |
| fmov d1, x10 // CTR block 4k+9 |
| orr x9, x11, x9, lsl #32 // CTR block 4k+9 |
| fmov v1.d[1], x9 // CTR block 4k+9 |
| aese v2.16b, v31.16b // AES block 4k+6 - round N-1 |
| rev w9, w12 // CTR block 4k+10 |
| st1 { v4.16b}, [x2], #16 // AES block 4k+4 - store result |
| orr x9, x11, x9, lsl #32 // CTR block 4k+10 |
| eor v11.16b, v11.16b, v9.16b // MODULO - fold into low |
| fmov v7.d[1], x24 // AES block 4k+7 - mov high |
| ext v10.16b, v10.16b, v10.16b, #8 // MODULO - other mid alignment |
| st1 { v5.16b}, [x2], #16 // AES block 4k+5 - store result |
| add w12, w12, #1 // CTR block 4k+10 |
| aese v3.16b, v31.16b // AES block 4k+7 - round N-1 |
| eor v6.16b, v6.16b, v2.16b // AES block 4k+6 - result |
| fmov d2, x10 // CTR block 4k+10 |
| st1 { v6.16b}, [x2], #16 // AES block 4k+6 - store result |
| fmov v2.d[1], x9 // CTR block 4k+10 |
| rev w9, w12 // CTR block 4k+11 |
| eor v11.16b, v11.16b, v10.16b // MODULO - fold into low |
| orr x9, x11, x9, lsl #32 // CTR block 4k+11 |
| eor v7.16b, v7.16b, v3.16b // AES block 4k+7 - result |
| st1 { v7.16b}, [x2], #16 // AES block 4k+7 - store result |
| b.lt .Lenc_main_loop |
| |
| .Lenc_prepretail: // PREPRETAIL |
| aese v1.16b, v18.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 0 |
| rev64 v6.16b, v6.16b // GHASH block 4k+2 (t0, t1, and t2 free) |
| aese v2.16b, v18.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 0 |
| fmov d3, x10 // CTR block 4k+3 |
| aese v0.16b, v18.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 0 |
| rev64 v4.16b, v4.16b // GHASH block 4k (only t0 is free) |
| fmov v3.d[1], x9 // CTR block 4k+3 |
| ext v11.16b, v11.16b, v11.16b, #8 // PRE 0 |
| aese v2.16b, v19.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 1 |
| aese v0.16b, v19.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 1 |
| eor v4.16b, v4.16b, v11.16b // PRE 1 |
| rev64 v5.16b, v5.16b // GHASH block 4k+1 (t0 and t1 free) |
| aese v2.16b, v20.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 2 |
| aese v3.16b, v18.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 0 |
| mov d10, v17.d[1] // GHASH block 4k - mid |
| aese v1.16b, v19.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 1 |
| pmull v11.1q, v4.1d, v15.1d // GHASH block 4k - low |
| mov d8, v4.d[1] // GHASH block 4k - mid |
| pmull2 v9.1q, v4.2d, v15.2d // GHASH block 4k - high |
| aese v2.16b, v21.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 3 |
| aese v1.16b, v20.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 2 |
| eor v8.8b, v8.8b, v4.8b // GHASH block 4k - mid |
| aese v0.16b, v20.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 2 |
| aese v3.16b, v19.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 1 |
| aese v1.16b, v21.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 3 |
| pmull v10.1q, v8.1d, v10.1d // GHASH block 4k - mid |
| pmull2 v4.1q, v5.2d, v14.2d // GHASH block 4k+1 - high |
| pmull v8.1q, v5.1d, v14.1d // GHASH block 4k+1 - low |
| aese v3.16b, v20.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 2 |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+1 - high |
| mov d4, v5.d[1] // GHASH block 4k+1 - mid |
| aese v0.16b, v21.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 3 |
| eor v11.16b, v11.16b, v8.16b // GHASH block 4k+1 - low |
| aese v3.16b, v21.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 3 |
| eor v4.8b, v4.8b, v5.8b // GHASH block 4k+1 - mid |
| mov d8, v6.d[1] // GHASH block 4k+2 - mid |
| aese v0.16b, v22.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 4 |
| rev64 v7.16b, v7.16b // GHASH block 4k+3 (t0, t1, t2 and t3 free) |
| aese v3.16b, v22.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 4 |
| pmull v4.1q, v4.1d, v17.1d // GHASH block 4k+1 - mid |
| eor v8.8b, v8.8b, v6.8b // GHASH block 4k+2 - mid |
| add w12, w12, #1 // CTR block 4k+3 |
| pmull v5.1q, v6.1d, v13.1d // GHASH block 4k+2 - low |
| aese v3.16b, v23.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 5 |
| aese v2.16b, v22.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 4 |
| eor v10.16b, v10.16b, v4.16b // GHASH block 4k+1 - mid |
| pmull2 v4.1q, v6.2d, v13.2d // GHASH block 4k+2 - high |
| eor v11.16b, v11.16b, v5.16b // GHASH block 4k+2 - low |
| ins v8.d[1], v8.d[0] // GHASH block 4k+2 - mid |
| aese v2.16b, v23.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 5 |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+2 - high |
| mov d4, v7.d[1] // GHASH block 4k+3 - mid |
| aese v1.16b, v22.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 4 |
| pmull2 v8.1q, v8.2d, v16.2d // GHASH block 4k+2 - mid |
| eor v4.8b, v4.8b, v7.8b // GHASH block 4k+3 - mid |
| pmull2 v5.1q, v7.2d, v12.2d // GHASH block 4k+3 - high |
| aese v1.16b, v23.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 5 |
| pmull v4.1q, v4.1d, v16.1d // GHASH block 4k+3 - mid |
| eor v10.16b, v10.16b, v8.16b // GHASH block 4k+2 - mid |
| aese v0.16b, v23.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 5 |
| aese v1.16b, v24.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 6 |
| aese v2.16b, v24.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 6 |
| aese v0.16b, v24.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 6 |
| movi v8.8b, #0xc2 |
| aese v3.16b, v24.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 6 |
| aese v1.16b, v25.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 7 |
| eor v9.16b, v9.16b, v5.16b // GHASH block 4k+3 - high |
| aese v0.16b, v25.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 7 |
| aese v3.16b, v25.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 7 |
| shl d8, d8, #56 // mod_constant |
| aese v1.16b, v26.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 8 |
| eor v10.16b, v10.16b, v4.16b // GHASH block 4k+3 - mid |
| pmull v6.1q, v7.1d, v12.1d // GHASH block 4k+3 - low |
| aese v3.16b, v26.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 8 |
| cmp x17, #12 // setup flags for AES-128/192/256 check |
| aese v0.16b, v26.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 8 |
| eor v11.16b, v11.16b, v6.16b // GHASH block 4k+3 - low |
| aese v2.16b, v25.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 7 |
| eor v10.16b, v10.16b, v9.16b // karatsuba tidy up |
| aese v2.16b, v26.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 8 |
| pmull v4.1q, v9.1d, v8.1d |
| ext v9.16b, v9.16b, v9.16b, #8 |
| eor v10.16b, v10.16b, v11.16b |
| b.lt .Lenc_finish_prepretail // branch if AES-128 |
| |
| aese v1.16b, v27.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 9 |
| aese v3.16b, v27.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 9 |
| aese v0.16b, v27.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 9 |
| aese v2.16b, v27.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 9 |
| aese v3.16b, v28.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 10 |
| aese v1.16b, v28.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 10 |
| aese v0.16b, v28.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 10 |
| aese v2.16b, v28.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 10 |
| b.eq .Lenc_finish_prepretail // branch if AES-192 |
| |
| aese v1.16b, v29.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 11 |
| aese v0.16b, v29.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 11 |
| aese v3.16b, v29.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 11 |
| aese v2.16b, v29.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 11 |
| aese v1.16b, v30.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 12 |
| aese v0.16b, v30.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 12 |
| aese v3.16b, v30.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 12 |
| aese v2.16b, v30.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 12 |
| |
| .Lenc_finish_prepretail: |
| eor v10.16b, v10.16b, v4.16b |
| eor v10.16b, v10.16b, v9.16b |
| pmull v4.1q, v10.1d, v8.1d |
| ext v10.16b, v10.16b, v10.16b, #8 |
| aese v1.16b, v31.16b // AES block 4k+5 - round N-1 |
| eor v11.16b, v11.16b, v4.16b |
| aese v3.16b, v31.16b // AES block 4k+7 - round N-1 |
| aese v0.16b, v31.16b // AES block 4k+4 - round N-1 |
| aese v2.16b, v31.16b // AES block 4k+6 - round N-1 |
| eor v11.16b, v11.16b, v10.16b |
| |
| .Lenc_tail: // TAIL |
| ext v8.16b, v11.16b, v11.16b, #8 // prepare final partial tag |
| sub x5, x4, x0 // main_end_input_ptr is number of bytes left to process |
| ldp x6, x7, [x0], #16 // AES block 4k+4 - load plaintext |
| eor x6, x6, x13 // AES block 4k+4 - round N low |
| eor x7, x7, x14 // AES block 4k+4 - round N high |
| cmp x5, #48 |
| fmov d4, x6 // AES block 4k+4 - mov low |
| fmov v4.d[1], x7 // AES block 4k+4 - mov high |
| eor v5.16b, v4.16b, v0.16b // AES block 4k+4 - result |
| b.gt .Lenc_blocks_more_than_3 |
| cmp x5, #32 |
| mov v3.16b, v2.16b |
| movi v11.8b, #0 |
| movi v9.8b, #0 |
| sub w12, w12, #1 |
| mov v2.16b, v1.16b |
| movi v10.8b, #0 |
| b.gt .Lenc_blocks_more_than_2 |
| mov v3.16b, v1.16b |
| sub w12, w12, #1 |
| cmp x5, #16 |
| b.gt .Lenc_blocks_more_than_1 |
| sub w12, w12, #1 |
| b .Lenc_blocks_less_than_1 |
| .Lenc_blocks_more_than_3: // blocks left > 3 |
| st1 { v5.16b}, [x2], #16 // AES final-3 block - store result |
| ldp x6, x7, [x0], #16 // AES final-2 block - load input low & high |
| rev64 v4.16b, v5.16b // GHASH final-3 block |
| eor x6, x6, x13 // AES final-2 block - round N low |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| eor x7, x7, x14 // AES final-2 block - round N high |
| mov d22, v4.d[1] // GHASH final-3 block - mid |
| fmov d5, x6 // AES final-2 block - mov low |
| fmov v5.d[1], x7 // AES final-2 block - mov high |
| eor v22.8b, v22.8b, v4.8b // GHASH final-3 block - mid |
| movi v8.8b, #0 // suppress further partial tag feed in |
| mov d10, v17.d[1] // GHASH final-3 block - mid |
| pmull v11.1q, v4.1d, v15.1d // GHASH final-3 block - low |
| pmull2 v9.1q, v4.2d, v15.2d // GHASH final-3 block - high |
| pmull v10.1q, v22.1d, v10.1d // GHASH final-3 block - mid |
| eor v5.16b, v5.16b, v1.16b // AES final-2 block - result |
| .Lenc_blocks_more_than_2: // blocks left > 2 |
| st1 { v5.16b}, [x2], #16 // AES final-2 block - store result |
| ldp x6, x7, [x0], #16 // AES final-1 block - load input low & high |
| rev64 v4.16b, v5.16b // GHASH final-2 block |
| eor x6, x6, x13 // AES final-1 block - round N low |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| fmov d5, x6 // AES final-1 block - mov low |
| eor x7, x7, x14 // AES final-1 block - round N high |
| fmov v5.d[1], x7 // AES final-1 block - mov high |
| movi v8.8b, #0 // suppress further partial tag feed in |
| pmull2 v20.1q, v4.2d, v14.2d // GHASH final-2 block - high |
| mov d22, v4.d[1] // GHASH final-2 block - mid |
| pmull v21.1q, v4.1d, v14.1d // GHASH final-2 block - low |
| eor v22.8b, v22.8b, v4.8b // GHASH final-2 block - mid |
| eor v5.16b, v5.16b, v2.16b // AES final-1 block - result |
| eor v9.16b, v9.16b, v20.16b // GHASH final-2 block - high |
| pmull v22.1q, v22.1d, v17.1d // GHASH final-2 block - mid |
| eor v11.16b, v11.16b, v21.16b // GHASH final-2 block - low |
| eor v10.16b, v10.16b, v22.16b // GHASH final-2 block - mid |
| .Lenc_blocks_more_than_1: // blocks left > 1 |
| st1 { v5.16b}, [x2], #16 // AES final-1 block - store result |
| rev64 v4.16b, v5.16b // GHASH final-1 block |
| ldp x6, x7, [x0], #16 // AES final block - load input low & high |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| movi v8.8b, #0 // suppress further partial tag feed in |
| eor x6, x6, x13 // AES final block - round N low |
| mov d22, v4.d[1] // GHASH final-1 block - mid |
| pmull2 v20.1q, v4.2d, v13.2d // GHASH final-1 block - high |
| eor x7, x7, x14 // AES final block - round N high |
| eor v22.8b, v22.8b, v4.8b // GHASH final-1 block - mid |
| eor v9.16b, v9.16b, v20.16b // GHASH final-1 block - high |
| ins v22.d[1], v22.d[0] // GHASH final-1 block - mid |
| fmov d5, x6 // AES final block - mov low |
| fmov v5.d[1], x7 // AES final block - mov high |
| pmull2 v22.1q, v22.2d, v16.2d // GHASH final-1 block - mid |
| pmull v21.1q, v4.1d, v13.1d // GHASH final-1 block - low |
| eor v5.16b, v5.16b, v3.16b // AES final block - result |
| eor v10.16b, v10.16b, v22.16b // GHASH final-1 block - mid |
| eor v11.16b, v11.16b, v21.16b // GHASH final-1 block - low |
| .Lenc_blocks_less_than_1: // blocks left <= 1 |
| and x1, x1, #127 // bit_length %= 128 |
| mvn x13, xzr // rkN_l = 0xffffffffffffffff |
| sub x1, x1, #128 // bit_length -= 128 |
| neg x1, x1 // bit_length = 128 - #bits in input (in range [1,128]) |
| ld1 { v18.16b}, [x2] // load existing bytes where the possibly partial last block is to be stored |
| mvn x14, xzr // rkN_h = 0xffffffffffffffff |
| and x1, x1, #127 // bit_length %= 128 |
| lsr x14, x14, x1 // rkN_h is mask for top 64b of last block |
| cmp x1, #64 |
| csel x6, x13, x14, lt |
| csel x7, x14, xzr, lt |
| fmov d0, x6 // ctr0b is mask for last block |
| fmov v0.d[1], x7 |
| and v5.16b, v5.16b, v0.16b // possibly partial last block has zeroes in highest bits |
| rev64 v4.16b, v5.16b // GHASH final block |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| bif v5.16b, v18.16b, v0.16b // insert existing bytes in top end of result before storing |
| pmull2 v20.1q, v4.2d, v12.2d // GHASH final block - high |
| mov d8, v4.d[1] // GHASH final block - mid |
| rev w9, w12 |
| pmull v21.1q, v4.1d, v12.1d // GHASH final block - low |
| eor v9.16b, v9.16b, v20.16b // GHASH final block - high |
| eor v8.8b, v8.8b, v4.8b // GHASH final block - mid |
| pmull v8.1q, v8.1d, v16.1d // GHASH final block - mid |
| eor v11.16b, v11.16b, v21.16b // GHASH final block - low |
| eor v10.16b, v10.16b, v8.16b // GHASH final block - mid |
| movi v8.8b, #0xc2 |
| eor v4.16b, v11.16b, v9.16b // MODULO - karatsuba tidy up |
| shl d8, d8, #56 // mod_constant |
| eor v10.16b, v10.16b, v4.16b // MODULO - karatsuba tidy up |
| pmull v7.1q, v9.1d, v8.1d // MODULO - top 64b align with mid |
| ext v9.16b, v9.16b, v9.16b, #8 // MODULO - other top alignment |
| eor v10.16b, v10.16b, v7.16b // MODULO - fold into mid |
| eor v10.16b, v10.16b, v9.16b // MODULO - fold into mid |
| pmull v9.1q, v10.1d, v8.1d // MODULO - mid 64b align with low |
| ext v10.16b, v10.16b, v10.16b, #8 // MODULO - other mid alignment |
| str w9, [x16, #12] // store the updated counter |
| st1 { v5.16b}, [x2] // store all 16B |
| eor v11.16b, v11.16b, v9.16b // MODULO - fold into low |
| eor v11.16b, v11.16b, v10.16b // MODULO - fold into low |
| ext v11.16b, v11.16b, v11.16b, #8 |
| rev64 v11.16b, v11.16b |
| mov x0, x15 |
| st1 { v11.16b }, [x3] |
| ldp x19, x20, [sp, #16] |
| ldp x21, x22, [sp, #32] |
| ldp x23, x24, [sp, #48] |
| ldp d8, d9, [sp, #64] |
| ldp d10, d11, [sp, #80] |
| ldp d12, d13, [sp, #96] |
| ldp d14, d15, [sp, #112] |
| ldp x29, x30, [sp], #128 |
| AARCH64_VALIDATE_LINK_REGISTER |
| ret |
| .size aes_gcm_enc_kernel,.-aes_gcm_enc_kernel |
| .globl aes_gcm_dec_kernel |
| .hidden aes_gcm_dec_kernel |
| .type aes_gcm_dec_kernel,%function |
| .align 4 |
| aes_gcm_dec_kernel: |
| AARCH64_SIGN_LINK_REGISTER |
| stp x29, x30, [sp, #-128]! |
| mov x29, sp |
| stp x19, x20, [sp, #16] |
| mov x16, x4 |
| mov x8, x5 |
| stp x21, x22, [sp, #32] |
| stp x23, x24, [sp, #48] |
| stp d8, d9, [sp, #64] |
| stp d10, d11, [sp, #80] |
| stp d12, d13, [sp, #96] |
| stp d14, d15, [sp, #112] |
| ldr w17, [x8, #240] |
| add x19, x8, x17, lsl #4 // borrow input_l1 for last key |
| ldp x13, x14, [x19] // load round N keys |
| ldr q31, [x19, #-16] // load round N-1 keys |
| lsr x5, x1, #3 // byte_len |
| mov x15, x5 |
| ldp x10, x11, [x16] // ctr96_b64, ctr96_t32 |
| ldr q26, [x8, #128] // load rk8 |
| sub x5, x5, #1 // byte_len - 1 |
| ldr q25, [x8, #112] // load rk7 |
| and x5, x5, #0xffffffffffffffc0 // number of bytes to be processed in main loop (at least 1 byte must be handled by tail) |
| add x4, x0, x1, lsr #3 // end_input_ptr |
| ldr q24, [x8, #96] // load rk6 |
| lsr x12, x11, #32 |
| ldr q23, [x8, #80] // load rk5 |
| orr w11, w11, w11 |
| ldr q21, [x8, #48] // load rk3 |
| add x5, x5, x0 |
| rev w12, w12 // rev_ctr32 |
| add w12, w12, #1 // increment rev_ctr32 |
| fmov d3, x10 // CTR block 3 |
| rev w9, w12 // CTR block 1 |
| add w12, w12, #1 // CTR block 1 |
| fmov d1, x10 // CTR block 1 |
| orr x9, x11, x9, lsl #32 // CTR block 1 |
| ld1 { v0.16b}, [x16] // special case vector load initial counter so we can start first AES block as quickly as possible |
| fmov v1.d[1], x9 // CTR block 1 |
| rev w9, w12 // CTR block 2 |
| add w12, w12, #1 // CTR block 2 |
| fmov d2, x10 // CTR block 2 |
| orr x9, x11, x9, lsl #32 // CTR block 2 |
| fmov v2.d[1], x9 // CTR block 2 |
| rev w9, w12 // CTR block 3 |
| orr x9, x11, x9, lsl #32 // CTR block 3 |
| ldr q18, [x8, #0] // load rk0 |
| fmov v3.d[1], x9 // CTR block 3 |
| add w12, w12, #1 // CTR block 3 |
| ldr q22, [x8, #64] // load rk4 |
| ldr q19, [x8, #16] // load rk1 |
| aese v0.16b, v18.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 0 |
| ldr q14, [x3, #80] // load h3l | h3h |
| ext v14.16b, v14.16b, v14.16b, #8 |
| aese v3.16b, v18.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 0 |
| ldr q15, [x3, #112] // load h4l | h4h |
| ext v15.16b, v15.16b, v15.16b, #8 |
| aese v1.16b, v18.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 0 |
| ldr q13, [x3, #64] // load h2l | h2h |
| ext v13.16b, v13.16b, v13.16b, #8 |
| aese v2.16b, v18.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 0 |
| ldr q20, [x8, #32] // load rk2 |
| aese v0.16b, v19.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 1 |
| aese v1.16b, v19.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 1 |
| ld1 { v11.16b}, [x3] |
| ext v11.16b, v11.16b, v11.16b, #8 |
| rev64 v11.16b, v11.16b |
| aese v2.16b, v19.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 1 |
| ldr q27, [x8, #144] // load rk9 |
| aese v3.16b, v19.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 1 |
| ldr q30, [x8, #192] // load rk12 |
| aese v0.16b, v20.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 2 |
| ldr q12, [x3, #32] // load h1l | h1h |
| ext v12.16b, v12.16b, v12.16b, #8 |
| aese v2.16b, v20.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 2 |
| ldr q28, [x8, #160] // load rk10 |
| aese v3.16b, v20.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 2 |
| aese v0.16b, v21.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 3 |
| aese v1.16b, v20.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 2 |
| aese v3.16b, v21.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 3 |
| aese v0.16b, v22.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 4 |
| aese v2.16b, v21.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 3 |
| aese v1.16b, v21.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 3 |
| aese v3.16b, v22.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 4 |
| aese v2.16b, v22.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 4 |
| aese v1.16b, v22.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 4 |
| aese v3.16b, v23.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 5 |
| aese v0.16b, v23.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 5 |
| aese v1.16b, v23.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 5 |
| aese v2.16b, v23.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 5 |
| aese v0.16b, v24.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 6 |
| aese v3.16b, v24.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 6 |
| cmp x17, #12 // setup flags for AES-128/192/256 check |
| aese v1.16b, v24.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 6 |
| aese v2.16b, v24.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 6 |
| aese v0.16b, v25.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 7 |
| aese v1.16b, v25.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 7 |
| aese v3.16b, v25.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 7 |
| aese v0.16b, v26.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 8 |
| aese v2.16b, v25.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 7 |
| aese v3.16b, v26.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 8 |
| aese v1.16b, v26.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 8 |
| ldr q29, [x8, #176] // load rk11 |
| aese v2.16b, v26.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 8 |
| b.lt .Ldec_finish_first_blocks // branch if AES-128 |
| |
| aese v0.16b, v27.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 9 |
| aese v1.16b, v27.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 9 |
| aese v3.16b, v27.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 9 |
| aese v2.16b, v27.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 9 |
| aese v0.16b, v28.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 10 |
| aese v1.16b, v28.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 10 |
| aese v3.16b, v28.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 10 |
| aese v2.16b, v28.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 10 |
| b.eq .Ldec_finish_first_blocks // branch if AES-192 |
| |
| aese v0.16b, v29.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 11 |
| aese v3.16b, v29.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 11 |
| aese v1.16b, v29.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 11 |
| aese v2.16b, v29.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 11 |
| aese v1.16b, v30.16b |
| aesmc v1.16b, v1.16b // AES block 1 - round 12 |
| aese v0.16b, v30.16b |
| aesmc v0.16b, v0.16b // AES block 0 - round 12 |
| aese v2.16b, v30.16b |
| aesmc v2.16b, v2.16b // AES block 2 - round 12 |
| aese v3.16b, v30.16b |
| aesmc v3.16b, v3.16b // AES block 3 - round 12 |
| |
| .Ldec_finish_first_blocks: |
| cmp x0, x5 // check if we have <= 4 blocks |
| trn1 v9.2d, v14.2d, v15.2d // h4h | h3h |
| trn2 v17.2d, v14.2d, v15.2d // h4l | h3l |
| trn1 v8.2d, v12.2d, v13.2d // h2h | h1h |
| trn2 v16.2d, v12.2d, v13.2d // h2l | h1l |
| eor v17.16b, v17.16b, v9.16b // h4k | h3k |
| aese v1.16b, v31.16b // AES block 1 - round N-1 |
| aese v2.16b, v31.16b // AES block 2 - round N-1 |
| eor v16.16b, v16.16b, v8.16b // h2k | h1k |
| aese v3.16b, v31.16b // AES block 3 - round N-1 |
| aese v0.16b, v31.16b // AES block 0 - round N-1 |
| b.ge .Ldec_tail // handle tail |
| |
| ldr q4, [x0, #0] // AES block 0 - load ciphertext |
| ldr q5, [x0, #16] // AES block 1 - load ciphertext |
| rev w9, w12 // CTR block 4 |
| eor v0.16b, v4.16b, v0.16b // AES block 0 - result |
| eor v1.16b, v5.16b, v1.16b // AES block 1 - result |
| rev64 v5.16b, v5.16b // GHASH block 1 |
| ldr q7, [x0, #48] // AES block 3 - load ciphertext |
| mov x7, v0.d[1] // AES block 0 - mov high |
| mov x6, v0.d[0] // AES block 0 - mov low |
| rev64 v4.16b, v4.16b // GHASH block 0 |
| add w12, w12, #1 // CTR block 4 |
| fmov d0, x10 // CTR block 4 |
| orr x9, x11, x9, lsl #32 // CTR block 4 |
| fmov v0.d[1], x9 // CTR block 4 |
| rev w9, w12 // CTR block 5 |
| add w12, w12, #1 // CTR block 5 |
| mov x19, v1.d[0] // AES block 1 - mov low |
| orr x9, x11, x9, lsl #32 // CTR block 5 |
| mov x20, v1.d[1] // AES block 1 - mov high |
| eor x7, x7, x14 // AES block 0 - round N high |
| eor x6, x6, x13 // AES block 0 - round N low |
| stp x6, x7, [x2], #16 // AES block 0 - store result |
| fmov d1, x10 // CTR block 5 |
| ldr q6, [x0, #32] // AES block 2 - load ciphertext |
| add x0, x0, #64 // AES input_ptr update |
| fmov v1.d[1], x9 // CTR block 5 |
| rev w9, w12 // CTR block 6 |
| add w12, w12, #1 // CTR block 6 |
| eor x19, x19, x13 // AES block 1 - round N low |
| orr x9, x11, x9, lsl #32 // CTR block 6 |
| eor x20, x20, x14 // AES block 1 - round N high |
| stp x19, x20, [x2], #16 // AES block 1 - store result |
| eor v2.16b, v6.16b, v2.16b // AES block 2 - result |
| cmp x0, x5 // check if we have <= 8 blocks |
| b.ge .Ldec_prepretail // do prepretail |
| |
| .Ldec_main_loop: // main loop start |
| mov x21, v2.d[0] // AES block 4k+2 - mov low |
| ext v11.16b, v11.16b, v11.16b, #8 // PRE 0 |
| eor v3.16b, v7.16b, v3.16b // AES block 4k+3 - result |
| aese v0.16b, v18.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 0 |
| mov x22, v2.d[1] // AES block 4k+2 - mov high |
| aese v1.16b, v18.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 0 |
| fmov d2, x10 // CTR block 4k+6 |
| fmov v2.d[1], x9 // CTR block 4k+6 |
| eor v4.16b, v4.16b, v11.16b // PRE 1 |
| rev w9, w12 // CTR block 4k+7 |
| aese v0.16b, v19.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 1 |
| mov x24, v3.d[1] // AES block 4k+3 - mov high |
| aese v1.16b, v19.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 1 |
| mov x23, v3.d[0] // AES block 4k+3 - mov low |
| pmull2 v9.1q, v4.2d, v15.2d // GHASH block 4k - high |
| mov d8, v4.d[1] // GHASH block 4k - mid |
| fmov d3, x10 // CTR block 4k+7 |
| aese v0.16b, v20.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 2 |
| orr x9, x11, x9, lsl #32 // CTR block 4k+7 |
| aese v2.16b, v18.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 0 |
| fmov v3.d[1], x9 // CTR block 4k+7 |
| aese v1.16b, v20.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 2 |
| eor v8.8b, v8.8b, v4.8b // GHASH block 4k - mid |
| aese v0.16b, v21.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 3 |
| eor x22, x22, x14 // AES block 4k+2 - round N high |
| aese v2.16b, v19.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 1 |
| mov d10, v17.d[1] // GHASH block 4k - mid |
| aese v1.16b, v21.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 3 |
| rev64 v6.16b, v6.16b // GHASH block 4k+2 |
| aese v3.16b, v18.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 0 |
| eor x21, x21, x13 // AES block 4k+2 - round N low |
| aese v2.16b, v20.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 2 |
| stp x21, x22, [x2], #16 // AES block 4k+2 - store result |
| pmull v11.1q, v4.1d, v15.1d // GHASH block 4k - low |
| pmull2 v4.1q, v5.2d, v14.2d // GHASH block 4k+1 - high |
| aese v2.16b, v21.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 3 |
| rev64 v7.16b, v7.16b // GHASH block 4k+3 |
| pmull v10.1q, v8.1d, v10.1d // GHASH block 4k - mid |
| eor x23, x23, x13 // AES block 4k+3 - round N low |
| pmull v8.1q, v5.1d, v14.1d // GHASH block 4k+1 - low |
| eor x24, x24, x14 // AES block 4k+3 - round N high |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+1 - high |
| aese v2.16b, v22.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 4 |
| aese v3.16b, v19.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 1 |
| mov d4, v5.d[1] // GHASH block 4k+1 - mid |
| aese v0.16b, v22.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 4 |
| eor v11.16b, v11.16b, v8.16b // GHASH block 4k+1 - low |
| aese v2.16b, v23.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 5 |
| add w12, w12, #1 // CTR block 4k+7 |
| aese v3.16b, v20.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 2 |
| mov d8, v6.d[1] // GHASH block 4k+2 - mid |
| aese v1.16b, v22.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 4 |
| eor v4.8b, v4.8b, v5.8b // GHASH block 4k+1 - mid |
| pmull v5.1q, v6.1d, v13.1d // GHASH block 4k+2 - low |
| aese v3.16b, v21.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 3 |
| eor v8.8b, v8.8b, v6.8b // GHASH block 4k+2 - mid |
| aese v1.16b, v23.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 5 |
| aese v0.16b, v23.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 5 |
| eor v11.16b, v11.16b, v5.16b // GHASH block 4k+2 - low |
| pmull v4.1q, v4.1d, v17.1d // GHASH block 4k+1 - mid |
| rev w9, w12 // CTR block 4k+8 |
| aese v1.16b, v24.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 6 |
| ins v8.d[1], v8.d[0] // GHASH block 4k+2 - mid |
| aese v0.16b, v24.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 6 |
| add w12, w12, #1 // CTR block 4k+8 |
| aese v3.16b, v22.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 4 |
| aese v1.16b, v25.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 7 |
| eor v10.16b, v10.16b, v4.16b // GHASH block 4k+1 - mid |
| aese v0.16b, v25.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 7 |
| pmull2 v4.1q, v6.2d, v13.2d // GHASH block 4k+2 - high |
| mov d6, v7.d[1] // GHASH block 4k+3 - mid |
| aese v3.16b, v23.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 5 |
| pmull2 v8.1q, v8.2d, v16.2d // GHASH block 4k+2 - mid |
| aese v0.16b, v26.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 8 |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+2 - high |
| aese v3.16b, v24.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 6 |
| pmull v4.1q, v7.1d, v12.1d // GHASH block 4k+3 - low |
| orr x9, x11, x9, lsl #32 // CTR block 4k+8 |
| eor v10.16b, v10.16b, v8.16b // GHASH block 4k+2 - mid |
| pmull2 v5.1q, v7.2d, v12.2d // GHASH block 4k+3 - high |
| cmp x17, #12 // setup flags for AES-128/192/256 check |
| eor v6.8b, v6.8b, v7.8b // GHASH block 4k+3 - mid |
| aese v1.16b, v26.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 8 |
| aese v2.16b, v24.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 6 |
| eor v9.16b, v9.16b, v5.16b // GHASH block 4k+3 - high |
| pmull v6.1q, v6.1d, v16.1d // GHASH block 4k+3 - mid |
| movi v8.8b, #0xc2 |
| aese v2.16b, v25.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 7 |
| eor v11.16b, v11.16b, v4.16b // GHASH block 4k+3 - low |
| aese v3.16b, v25.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 7 |
| shl d8, d8, #56 // mod_constant |
| aese v2.16b, v26.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 8 |
| eor v10.16b, v10.16b, v6.16b // GHASH block 4k+3 - mid |
| aese v3.16b, v26.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 8 |
| b.lt .Ldec_main_loop_continue // branch if AES-128 |
| |
| aese v0.16b, v27.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 9 |
| aese v2.16b, v27.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 9 |
| aese v1.16b, v27.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 9 |
| aese v3.16b, v27.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 9 |
| aese v0.16b, v28.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 10 |
| aese v1.16b, v28.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 10 |
| aese v2.16b, v28.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 10 |
| aese v3.16b, v28.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 10 |
| b.eq .Ldec_main_loop_continue // branch if AES-192 |
| |
| aese v0.16b, v29.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 11 |
| aese v1.16b, v29.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 11 |
| aese v2.16b, v29.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 11 |
| aese v3.16b, v29.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 11 |
| aese v0.16b, v30.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 12 |
| aese v1.16b, v30.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 12 |
| aese v2.16b, v30.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 12 |
| aese v3.16b, v30.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 12 |
| |
| .Ldec_main_loop_continue: |
| pmull v7.1q, v9.1d, v8.1d // MODULO - top 64b align with mid |
| eor v6.16b, v11.16b, v9.16b // MODULO - karatsuba tidy up |
| ldr q4, [x0, #0] // AES block 4k+4 - load ciphertext |
| aese v0.16b, v31.16b // AES block 4k+4 - round N-1 |
| ext v9.16b, v9.16b, v9.16b, #8 // MODULO - other top alignment |
| eor v10.16b, v10.16b, v6.16b // MODULO - karatsuba tidy up |
| ldr q5, [x0, #16] // AES block 4k+5 - load ciphertext |
| eor v0.16b, v4.16b, v0.16b // AES block 4k+4 - result |
| stp x23, x24, [x2], #16 // AES block 4k+3 - store result |
| eor v10.16b, v10.16b, v7.16b // MODULO - fold into mid |
| ldr q7, [x0, #48] // AES block 4k+7 - load ciphertext |
| ldr q6, [x0, #32] // AES block 4k+6 - load ciphertext |
| mov x7, v0.d[1] // AES block 4k+4 - mov high |
| eor v10.16b, v10.16b, v9.16b // MODULO - fold into mid |
| aese v1.16b, v31.16b // AES block 4k+5 - round N-1 |
| add x0, x0, #64 // AES input_ptr update |
| mov x6, v0.d[0] // AES block 4k+4 - mov low |
| fmov d0, x10 // CTR block 4k+8 |
| fmov v0.d[1], x9 // CTR block 4k+8 |
| pmull v8.1q, v10.1d, v8.1d // MODULO - mid 64b align with low |
| eor v1.16b, v5.16b, v1.16b // AES block 4k+5 - result |
| rev w9, w12 // CTR block 4k+9 |
| aese v2.16b, v31.16b // AES block 4k+6 - round N-1 |
| orr x9, x11, x9, lsl #32 // CTR block 4k+9 |
| cmp x0, x5 // .LOOP CONTROL |
| add w12, w12, #1 // CTR block 4k+9 |
| eor x6, x6, x13 // AES block 4k+4 - round N low |
| eor x7, x7, x14 // AES block 4k+4 - round N high |
| mov x20, v1.d[1] // AES block 4k+5 - mov high |
| eor v2.16b, v6.16b, v2.16b // AES block 4k+6 - result |
| eor v11.16b, v11.16b, v8.16b // MODULO - fold into low |
| mov x19, v1.d[0] // AES block 4k+5 - mov low |
| fmov d1, x10 // CTR block 4k+9 |
| ext v10.16b, v10.16b, v10.16b, #8 // MODULO - other mid alignment |
| fmov v1.d[1], x9 // CTR block 4k+9 |
| rev w9, w12 // CTR block 4k+10 |
| add w12, w12, #1 // CTR block 4k+10 |
| aese v3.16b, v31.16b // AES block 4k+7 - round N-1 |
| orr x9, x11, x9, lsl #32 // CTR block 4k+10 |
| rev64 v5.16b, v5.16b // GHASH block 4k+5 |
| eor x20, x20, x14 // AES block 4k+5 - round N high |
| stp x6, x7, [x2], #16 // AES block 4k+4 - store result |
| eor x19, x19, x13 // AES block 4k+5 - round N low |
| stp x19, x20, [x2], #16 // AES block 4k+5 - store result |
| rev64 v4.16b, v4.16b // GHASH block 4k+4 |
| eor v11.16b, v11.16b, v10.16b // MODULO - fold into low |
| b.lt .Ldec_main_loop |
| |
| .Ldec_prepretail: // PREPRETAIL |
| ext v11.16b, v11.16b, v11.16b, #8 // PRE 0 |
| mov x21, v2.d[0] // AES block 4k+2 - mov low |
| eor v3.16b, v7.16b, v3.16b // AES block 4k+3 - result |
| aese v0.16b, v18.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 0 |
| mov x22, v2.d[1] // AES block 4k+2 - mov high |
| aese v1.16b, v18.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 0 |
| fmov d2, x10 // CTR block 4k+6 |
| fmov v2.d[1], x9 // CTR block 4k+6 |
| rev w9, w12 // CTR block 4k+7 |
| eor v4.16b, v4.16b, v11.16b // PRE 1 |
| rev64 v6.16b, v6.16b // GHASH block 4k+2 |
| orr x9, x11, x9, lsl #32 // CTR block 4k+7 |
| mov x23, v3.d[0] // AES block 4k+3 - mov low |
| aese v1.16b, v19.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 1 |
| mov x24, v3.d[1] // AES block 4k+3 - mov high |
| pmull v11.1q, v4.1d, v15.1d // GHASH block 4k - low |
| mov d8, v4.d[1] // GHASH block 4k - mid |
| fmov d3, x10 // CTR block 4k+7 |
| pmull2 v9.1q, v4.2d, v15.2d // GHASH block 4k - high |
| fmov v3.d[1], x9 // CTR block 4k+7 |
| aese v2.16b, v18.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 0 |
| mov d10, v17.d[1] // GHASH block 4k - mid |
| aese v0.16b, v19.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 1 |
| eor v8.8b, v8.8b, v4.8b // GHASH block 4k - mid |
| pmull2 v4.1q, v5.2d, v14.2d // GHASH block 4k+1 - high |
| aese v2.16b, v19.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 1 |
| rev64 v7.16b, v7.16b // GHASH block 4k+3 |
| aese v3.16b, v18.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 0 |
| pmull v10.1q, v8.1d, v10.1d // GHASH block 4k - mid |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+1 - high |
| pmull v8.1q, v5.1d, v14.1d // GHASH block 4k+1 - low |
| aese v3.16b, v19.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 1 |
| mov d4, v5.d[1] // GHASH block 4k+1 - mid |
| aese v0.16b, v20.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 2 |
| aese v1.16b, v20.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 2 |
| eor v11.16b, v11.16b, v8.16b // GHASH block 4k+1 - low |
| aese v2.16b, v20.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 2 |
| aese v0.16b, v21.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 3 |
| mov d8, v6.d[1] // GHASH block 4k+2 - mid |
| aese v3.16b, v20.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 2 |
| eor v4.8b, v4.8b, v5.8b // GHASH block 4k+1 - mid |
| pmull v5.1q, v6.1d, v13.1d // GHASH block 4k+2 - low |
| aese v0.16b, v22.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 4 |
| aese v3.16b, v21.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 3 |
| eor v8.8b, v8.8b, v6.8b // GHASH block 4k+2 - mid |
| pmull v4.1q, v4.1d, v17.1d // GHASH block 4k+1 - mid |
| aese v0.16b, v23.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 5 |
| eor v11.16b, v11.16b, v5.16b // GHASH block 4k+2 - low |
| aese v3.16b, v22.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 4 |
| pmull2 v5.1q, v7.2d, v12.2d // GHASH block 4k+3 - high |
| eor v10.16b, v10.16b, v4.16b // GHASH block 4k+1 - mid |
| pmull2 v4.1q, v6.2d, v13.2d // GHASH block 4k+2 - high |
| aese v3.16b, v23.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 5 |
| ins v8.d[1], v8.d[0] // GHASH block 4k+2 - mid |
| aese v2.16b, v21.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 3 |
| aese v1.16b, v21.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 3 |
| eor v9.16b, v9.16b, v4.16b // GHASH block 4k+2 - high |
| pmull v4.1q, v7.1d, v12.1d // GHASH block 4k+3 - low |
| aese v2.16b, v22.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 4 |
| mov d6, v7.d[1] // GHASH block 4k+3 - mid |
| aese v1.16b, v22.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 4 |
| pmull2 v8.1q, v8.2d, v16.2d // GHASH block 4k+2 - mid |
| aese v2.16b, v23.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 5 |
| eor v6.8b, v6.8b, v7.8b // GHASH block 4k+3 - mid |
| aese v1.16b, v23.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 5 |
| aese v3.16b, v24.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 6 |
| eor v10.16b, v10.16b, v8.16b // GHASH block 4k+2 - mid |
| aese v2.16b, v24.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 6 |
| aese v0.16b, v24.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 6 |
| movi v8.8b, #0xc2 |
| aese v1.16b, v24.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 6 |
| eor v11.16b, v11.16b, v4.16b // GHASH block 4k+3 - low |
| pmull v6.1q, v6.1d, v16.1d // GHASH block 4k+3 - mid |
| aese v3.16b, v25.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 7 |
| cmp x17, #12 // setup flags for AES-128/192/256 check |
| eor v9.16b, v9.16b, v5.16b // GHASH block 4k+3 - high |
| aese v1.16b, v25.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 7 |
| aese v0.16b, v25.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 7 |
| eor v10.16b, v10.16b, v6.16b // GHASH block 4k+3 - mid |
| aese v3.16b, v26.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 8 |
| aese v2.16b, v25.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 7 |
| eor v6.16b, v11.16b, v9.16b // MODULO - karatsuba tidy up |
| aese v1.16b, v26.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 8 |
| aese v0.16b, v26.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 8 |
| shl d8, d8, #56 // mod_constant |
| aese v2.16b, v26.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 8 |
| b.lt .Ldec_finish_prepretail // branch if AES-128 |
| |
| aese v1.16b, v27.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 9 |
| aese v2.16b, v27.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 9 |
| aese v3.16b, v27.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 9 |
| aese v0.16b, v27.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 9 |
| aese v2.16b, v28.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 10 |
| aese v3.16b, v28.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 10 |
| aese v0.16b, v28.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 10 |
| aese v1.16b, v28.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 10 |
| b.eq .Ldec_finish_prepretail // branch if AES-192 |
| |
| aese v2.16b, v29.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 11 |
| aese v0.16b, v29.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 11 |
| aese v1.16b, v29.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 11 |
| aese v2.16b, v30.16b |
| aesmc v2.16b, v2.16b // AES block 4k+6 - round 12 |
| aese v3.16b, v29.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 11 |
| aese v1.16b, v30.16b |
| aesmc v1.16b, v1.16b // AES block 4k+5 - round 12 |
| aese v0.16b, v30.16b |
| aesmc v0.16b, v0.16b // AES block 4k+4 - round 12 |
| aese v3.16b, v30.16b |
| aesmc v3.16b, v3.16b // AES block 4k+7 - round 12 |
| |
| .Ldec_finish_prepretail: |
| eor v10.16b, v10.16b, v6.16b // MODULO - karatsuba tidy up |
| pmull v7.1q, v9.1d, v8.1d // MODULO - top 64b align with mid |
| ext v9.16b, v9.16b, v9.16b, #8 // MODULO - other top alignment |
| eor v10.16b, v10.16b, v7.16b // MODULO - fold into mid |
| eor x22, x22, x14 // AES block 4k+2 - round N high |
| eor x23, x23, x13 // AES block 4k+3 - round N low |
| eor v10.16b, v10.16b, v9.16b // MODULO - fold into mid |
| add w12, w12, #1 // CTR block 4k+7 |
| eor x21, x21, x13 // AES block 4k+2 - round N low |
| pmull v8.1q, v10.1d, v8.1d // MODULO - mid 64b align with low |
| eor x24, x24, x14 // AES block 4k+3 - round N high |
| stp x21, x22, [x2], #16 // AES block 4k+2 - store result |
| ext v10.16b, v10.16b, v10.16b, #8 // MODULO - other mid alignment |
| stp x23, x24, [x2], #16 // AES block 4k+3 - store result |
| |
| eor v11.16b, v11.16b, v8.16b // MODULO - fold into low |
| aese v1.16b, v31.16b // AES block 4k+5 - round N-1 |
| aese v0.16b, v31.16b // AES block 4k+4 - round N-1 |
| aese v3.16b, v31.16b // AES block 4k+7 - round N-1 |
| aese v2.16b, v31.16b // AES block 4k+6 - round N-1 |
| eor v11.16b, v11.16b, v10.16b // MODULO - fold into low |
| |
| .Ldec_tail: // TAIL |
| sub x5, x4, x0 // main_end_input_ptr is number of bytes left to process |
| ld1 { v5.16b}, [x0], #16 // AES block 4k+4 - load ciphertext |
| eor v0.16b, v5.16b, v0.16b // AES block 4k+4 - result |
| mov x6, v0.d[0] // AES block 4k+4 - mov low |
| mov x7, v0.d[1] // AES block 4k+4 - mov high |
| ext v8.16b, v11.16b, v11.16b, #8 // prepare final partial tag |
| cmp x5, #48 |
| eor x6, x6, x13 // AES block 4k+4 - round N low |
| eor x7, x7, x14 // AES block 4k+4 - round N high |
| b.gt .Ldec_blocks_more_than_3 |
| sub w12, w12, #1 |
| mov v3.16b, v2.16b |
| movi v10.8b, #0 |
| movi v11.8b, #0 |
| cmp x5, #32 |
| movi v9.8b, #0 |
| mov v2.16b, v1.16b |
| b.gt .Ldec_blocks_more_than_2 |
| sub w12, w12, #1 |
| mov v3.16b, v1.16b |
| cmp x5, #16 |
| b.gt .Ldec_blocks_more_than_1 |
| sub w12, w12, #1 |
| b .Ldec_blocks_less_than_1 |
| .Ldec_blocks_more_than_3: // blocks left > 3 |
| rev64 v4.16b, v5.16b // GHASH final-3 block |
| ld1 { v5.16b}, [x0], #16 // AES final-2 block - load ciphertext |
| stp x6, x7, [x2], #16 // AES final-3 block - store result |
| mov d10, v17.d[1] // GHASH final-3 block - mid |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| eor v0.16b, v5.16b, v1.16b // AES final-2 block - result |
| mov d22, v4.d[1] // GHASH final-3 block - mid |
| mov x6, v0.d[0] // AES final-2 block - mov low |
| mov x7, v0.d[1] // AES final-2 block - mov high |
| eor v22.8b, v22.8b, v4.8b // GHASH final-3 block - mid |
| movi v8.8b, #0 // suppress further partial tag feed in |
| pmull2 v9.1q, v4.2d, v15.2d // GHASH final-3 block - high |
| pmull v10.1q, v22.1d, v10.1d // GHASH final-3 block - mid |
| eor x6, x6, x13 // AES final-2 block - round N low |
| pmull v11.1q, v4.1d, v15.1d // GHASH final-3 block - low |
| eor x7, x7, x14 // AES final-2 block - round N high |
| .Ldec_blocks_more_than_2: // blocks left > 2 |
| rev64 v4.16b, v5.16b // GHASH final-2 block |
| ld1 { v5.16b}, [x0], #16 // AES final-1 block - load ciphertext |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| stp x6, x7, [x2], #16 // AES final-2 block - store result |
| eor v0.16b, v5.16b, v2.16b // AES final-1 block - result |
| mov d22, v4.d[1] // GHASH final-2 block - mid |
| pmull v21.1q, v4.1d, v14.1d // GHASH final-2 block - low |
| pmull2 v20.1q, v4.2d, v14.2d // GHASH final-2 block - high |
| eor v22.8b, v22.8b, v4.8b // GHASH final-2 block - mid |
| mov x6, v0.d[0] // AES final-1 block - mov low |
| mov x7, v0.d[1] // AES final-1 block - mov high |
| eor v11.16b, v11.16b, v21.16b // GHASH final-2 block - low |
| movi v8.8b, #0 // suppress further partial tag feed in |
| pmull v22.1q, v22.1d, v17.1d // GHASH final-2 block - mid |
| eor v9.16b, v9.16b, v20.16b // GHASH final-2 block - high |
| eor x6, x6, x13 // AES final-1 block - round N low |
| eor v10.16b, v10.16b, v22.16b // GHASH final-2 block - mid |
| eor x7, x7, x14 // AES final-1 block - round N high |
| .Ldec_blocks_more_than_1: // blocks left > 1 |
| stp x6, x7, [x2], #16 // AES final-1 block - store result |
| rev64 v4.16b, v5.16b // GHASH final-1 block |
| ld1 { v5.16b}, [x0], #16 // AES final block - load ciphertext |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| movi v8.8b, #0 // suppress further partial tag feed in |
| mov d22, v4.d[1] // GHASH final-1 block - mid |
| eor v0.16b, v5.16b, v3.16b // AES final block - result |
| pmull2 v20.1q, v4.2d, v13.2d // GHASH final-1 block - high |
| eor v22.8b, v22.8b, v4.8b // GHASH final-1 block - mid |
| pmull v21.1q, v4.1d, v13.1d // GHASH final-1 block - low |
| mov x6, v0.d[0] // AES final block - mov low |
| ins v22.d[1], v22.d[0] // GHASH final-1 block - mid |
| mov x7, v0.d[1] // AES final block - mov high |
| pmull2 v22.1q, v22.2d, v16.2d // GHASH final-1 block - mid |
| eor x6, x6, x13 // AES final block - round N low |
| eor v11.16b, v11.16b, v21.16b // GHASH final-1 block - low |
| eor v9.16b, v9.16b, v20.16b // GHASH final-1 block - high |
| eor v10.16b, v10.16b, v22.16b // GHASH final-1 block - mid |
| eor x7, x7, x14 // AES final block - round N high |
| .Ldec_blocks_less_than_1: // blocks left <= 1 |
| and x1, x1, #127 // bit_length %= 128 |
| mvn x14, xzr // rkN_h = 0xffffffffffffffff |
| sub x1, x1, #128 // bit_length -= 128 |
| mvn x13, xzr // rkN_l = 0xffffffffffffffff |
| ldp x4, x5, [x2] // load existing bytes we need to not overwrite |
| neg x1, x1 // bit_length = 128 - #bits in input (in range [1,128]) |
| and x1, x1, #127 // bit_length %= 128 |
| lsr x14, x14, x1 // rkN_h is mask for top 64b of last block |
| cmp x1, #64 |
| csel x9, x13, x14, lt |
| csel x10, x14, xzr, lt |
| fmov d0, x9 // ctr0b is mask for last block |
| and x6, x6, x9 |
| mov v0.d[1], x10 |
| bic x4, x4, x9 // mask out low existing bytes |
| rev w9, w12 |
| bic x5, x5, x10 // mask out high existing bytes |
| orr x6, x6, x4 |
| and x7, x7, x10 |
| orr x7, x7, x5 |
| and v5.16b, v5.16b, v0.16b // possibly partial last block has zeroes in highest bits |
| rev64 v4.16b, v5.16b // GHASH final block |
| eor v4.16b, v4.16b, v8.16b // feed in partial tag |
| pmull v21.1q, v4.1d, v12.1d // GHASH final block - low |
| mov d8, v4.d[1] // GHASH final block - mid |
| eor v8.8b, v8.8b, v4.8b // GHASH final block - mid |
| pmull2 v20.1q, v4.2d, v12.2d // GHASH final block - high |
| pmull v8.1q, v8.1d, v16.1d // GHASH final block - mid |
| eor v9.16b, v9.16b, v20.16b // GHASH final block - high |
| eor v11.16b, v11.16b, v21.16b // GHASH final block - low |
| eor v10.16b, v10.16b, v8.16b // GHASH final block - mid |
| movi v8.8b, #0xc2 |
| eor v6.16b, v11.16b, v9.16b // MODULO - karatsuba tidy up |
| shl d8, d8, #56 // mod_constant |
| eor v10.16b, v10.16b, v6.16b // MODULO - karatsuba tidy up |
| pmull v7.1q, v9.1d, v8.1d // MODULO - top 64b align with mid |
| ext v9.16b, v9.16b, v9.16b, #8 // MODULO - other top alignment |
| eor v10.16b, v10.16b, v7.16b // MODULO - fold into mid |
| eor v10.16b, v10.16b, v9.16b // MODULO - fold into mid |
| pmull v8.1q, v10.1d, v8.1d // MODULO - mid 64b align with low |
| ext v10.16b, v10.16b, v10.16b, #8 // MODULO - other mid alignment |
| eor v11.16b, v11.16b, v8.16b // MODULO - fold into low |
| stp x6, x7, [x2] |
| str w9, [x16, #12] // store the updated counter |
| eor v11.16b, v11.16b, v10.16b // MODULO - fold into low |
| ext v11.16b, v11.16b, v11.16b, #8 |
| rev64 v11.16b, v11.16b |
| mov x0, x15 |
| st1 { v11.16b }, [x3] |
| ldp x19, x20, [sp, #16] |
| ldp x21, x22, [sp, #32] |
| ldp x23, x24, [sp, #48] |
| ldp d8, d9, [sp, #64] |
| ldp d10, d11, [sp, #80] |
| ldp d12, d13, [sp, #96] |
| ldp d14, d15, [sp, #112] |
| ldp x29, x30, [sp], #128 |
| AARCH64_VALIDATE_LINK_REGISTER |
| ret |
| .size aes_gcm_dec_kernel,.-aes_gcm_dec_kernel |
| #endif |
| #endif // !OPENSSL_NO_ASM && defined(__AARCH64EL__) && defined(__ELF__) |
| #if defined(__ELF__) |
| // See https://www.airs.com/blog/archives/518. |
| .section .note.GNU-stack,"",%progbits |
| #endif |
