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Diffstat (limited to 'security/nss/lib/freebl/gcm-arm32-neon.c')
-rw-r--r--security/nss/lib/freebl/gcm-arm32-neon.c202
1 files changed, 0 insertions, 202 deletions
diff --git a/security/nss/lib/freebl/gcm-arm32-neon.c b/security/nss/lib/freebl/gcm-arm32-neon.c
deleted file mode 100644
index be04247701..0000000000
--- a/security/nss/lib/freebl/gcm-arm32-neon.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifdef FREEBL_NO_DEPEND
-#include "stubs.h"
-#endif
-#include "blapii.h"
-#include "blapit.h"
-#include "gcm.h"
-#include "secerr.h"
-#include "prtypes.h"
-
-#if defined(IS_LITTLE_ENDIAN)
-
-#include <arm_neon.h>
-
-SECStatus
-gcm_HashWrite_hw(gcmHashContext *ghash, unsigned char *outbuf)
-{
- vst1_u8(outbuf, vrev64_u8(vcreate_u8(ghash->x_high)));
- vst1_u8(outbuf + 8, vrev64_u8(vcreate_u8(ghash->x_low)));
- return SECSuccess;
-}
-
-/* Carry-less multiplication. a * b = ret. */
-static inline uint8x16_t
-clmul(const uint8x8_t a, const uint8x8_t b)
-{
- uint8x16_t d, e, f, g, h, i, j, k, l, m, n;
- uint8x8_t t_high, t_low;
- uint8x16_t t0, t1, t2, t3;
- const uint8x8_t k16 = vcreate_u8(0xffff);
- const uint8x8_t k32 = vcreate_u8(0xffffffff);
- const uint8x8_t k48 = vcreate_u8(0xffffffffffff);
-
- // D = A * B
- d = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(a),
- vreinterpret_p8_u8(b)));
- // E = A * B1
- e = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(a),
- vreinterpret_p8_u8(vext_u8(b, b, 1))));
- // F = A1 * B
- f = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(vext_u8(a, a, 1)),
- vreinterpret_p8_u8(b)));
- // G = A * B2
- g = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(a),
- vreinterpret_p8_u8(vext_u8(b, b, 2))));
- // H = A2 * B
- h = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(vext_u8(a, a, 2)),
- vreinterpret_p8_u8(b)));
- // I = A * B3
- i = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(a),
- vreinterpret_p8_u8(vext_u8(b, b, 3))));
- // J = A3 * B
- j = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(vext_u8(a, a, 3)),
- vreinterpret_p8_u8(b)));
- // K = A * B4
- k = vreinterpretq_u8_p16(vmull_p8(vreinterpret_p8_u8(a),
- vreinterpret_p8_u8(vext_u8(b, b, 4))));
- // L = E + F
- l = veorq_u8(e, f);
- // M = G + H
- m = veorq_u8(g, h);
- // N = I + J
- n = veorq_u8(i, j);
-
- // t0 = (L) (P0 + P1) << 8
- t_high = vget_high_u8(l);
- t_low = vget_low_u8(l);
- t_low = veor_u8(t_low, t_high);
- t_high = vand_u8(t_high, k48);
- t_low = veor_u8(t_low, t_high);
- t0 = vcombine_u8(t_low, t_high);
- t0 = vextq_u8(t0, t0, 15);
-
- // t1 = (M) (P2 + P3) << 16
- t_high = vget_high_u8(m);
- t_low = vget_low_u8(m);
- t_low = veor_u8(t_low, t_high);
- t_high = vand_u8(t_high, k32);
- t_low = veor_u8(t_low, t_high);
- t1 = vcombine_u8(t_low, t_high);
- t1 = vextq_u8(t1, t1, 14);
-
- // t2 = (N) (P4 + P5) << 24
- t_high = vget_high_u8(n);
- t_low = vget_low_u8(n);
- t_low = veor_u8(t_low, t_high);
- t_high = vand_u8(t_high, k16);
- t_low = veor_u8(t_low, t_high);
- t2 = vcombine_u8(t_low, t_high);
- t2 = vextq_u8(t2, t2, 13);
-
- // t3 = (K) (P6 + P7) << 32
- t_high = vget_high_u8(k);
- t_low = vget_low_u8(k);
- t_low = veor_u8(t_low, t_high);
- t_high = vdup_n_u8(0);
- t3 = vcombine_u8(t_low, t_high);
- t3 = vextq_u8(t3, t3, 12);
-
- t0 = veorq_u8(t0, t1);
- t2 = veorq_u8(t2, t3);
- return veorq_u8(veorq_u8(d, t0), t2);
-}
-
-SECStatus
-gcm_HashMult_hw(gcmHashContext *ghash, const unsigned char *buf,
- unsigned int count)
-{
- const uint8x8_t h_low = vcreate_u8(ghash->h_low);
- const uint8x8_t h_high = vcreate_u8(ghash->h_high);
- uint8x16_t ci;
- uint8x8_t ci_low;
- uint8x8_t ci_high;
- uint8x16_t z0, z2, z1a;
- uint8x16_t z_high, z_low;
- uint8x16_t t;
- int64x2_t t1, t2, t3;
- uint64x2_t z_low_l, z_low_r, z_high_l, z_high_r;
- size_t i;
-
- ci = vcombine_u8(vcreate_u8(ghash->x_low), vcreate_u8(ghash->x_high));
-
- for (i = 0; i < count; i++, buf += 16) {
- ci = veorq_u8(ci, vcombine_u8(vrev64_u8(vld1_u8(buf + 8)),
- vrev64_u8(vld1_u8(buf))));
- ci_high = vget_high_u8(ci);
- ci_low = vget_low_u8(ci);
-
- /* Do binary mult ghash->X = C * ghash->H (Karatsuba). */
- z0 = clmul(ci_low, h_low);
- z2 = clmul(ci_high, h_high);
- z1a = clmul(veor_u8(ci_high, ci_low), veor_u8(h_high, h_low));
- z1a = veorq_u8(z0, z1a);
- z1a = veorq_u8(z2, z1a);
- z_high = vcombine_u8(veor_u8(vget_low_u8(z2), vget_high_u8(z1a)),
- vget_high_u8(z2));
- z_low = vcombine_u8(vget_low_u8(z0),
- veor_u8(vget_high_u8(z0), vget_low_u8(z1a)));
-
- /* Shift one (multiply by x) as gcm spec is stupid. */
- z_low_l = vshlq_n_u64(vreinterpretq_u64_u8(z_low), 1);
- z_low_r = vshrq_n_u64(vreinterpretq_u64_u8(z_low), 63);
- z_high_l = vshlq_n_u64(vreinterpretq_u64_u8(z_high), 1);
- z_high_r = vshrq_n_u64(vreinterpretq_u64_u8(z_high), 63);
- z_low = vreinterpretq_u8_u64(
- vcombine_u64(vget_low_u64(z_low_l),
- vorr_u64(vget_high_u64(z_low_l),
- vget_low_u64(z_low_r))));
- z_high = vreinterpretq_u8_u64(
- vcombine_u64(vorr_u64(vget_low_u64(z_high_l),
- vget_high_u64(z_low_r)),
- vorr_u64(vget_high_u64(z_high_l),
- vget_low_u64(z_high_r))));
-
- /* Reduce */
- t1 = vshlq_n_s64(vreinterpretq_s64_u8(z_low), 57);
- t2 = vshlq_n_s64(vreinterpretq_s64_u8(z_low), 62);
- t3 = vshlq_n_s64(vreinterpretq_s64_u8(z_low), 63);
- t = vreinterpretq_u8_s64(veorq_s64(t1, veorq_s64(t2, t3)));
-
- z_low = vcombine_u8(vget_low_u8(z_low),
- veor_u8(vget_high_u8(z_low), vget_low_u8(t)));
- z_high = vcombine_u8(veor_u8(vget_low_u8(z_high), vget_high_u8(t)),
- vget_high_u8(z_high));
-
- t = vreinterpretq_u8_u64(vshrq_n_u64(vreinterpretq_u64_u8(z_low), 1));
- z_high = veorq_u8(z_high, z_low);
- z_low = veorq_u8(z_low, t);
- t = vreinterpretq_u8_u64(vshrq_n_u64(vreinterpretq_u64_u8(t), 6));
- z_low = vreinterpretq_u8_u64(
- vshrq_n_u64(vreinterpretq_u64_u8(z_low), 1));
- z_low = veorq_u8(z_low, z_high);
- ci = veorq_u8(z_low, t);
- }
-
- vst1_u8((uint8_t *)&ghash->x_high, vget_high_u8(ci));
- vst1_u8((uint8_t *)&ghash->x_low, vget_low_u8(ci));
- return SECSuccess;
-}
-
-SECStatus
-gcm_HashInit_hw(gcmHashContext *ghash)
-{
- ghash->ghash_mul = gcm_HashMult_hw;
- ghash->x_low = 0;
- ghash->x_high = 0;
- ghash->hw = PR_TRUE;
- return SECSuccess;
-}
-
-SECStatus
-gcm_HashZeroX_hw(gcmHashContext *ghash)
-{
- ghash->x_low = 0;
- ghash->x_high = 0;
- return SECSuccess;
-}
-
-#endif /* IS_LITTLE_ENDIAN */
generated by cgit v1.2.3 (git 2.26.2) at 2024-08-04 18:25:42 +0000