diff options
Diffstat (limited to 'security/nss/lib/freebl/mpi/mpi_sparc.c')
| -rw-r--r-- | security/nss/lib/freebl/mpi/mpi_sparc.c | 358 |
1 files changed, 0 insertions, 358 deletions
diff --git a/security/nss/lib/freebl/mpi/mpi_sparc.c b/security/nss/lib/freebl/mpi/mpi_sparc.c deleted file mode 100644 index a7bf863fd..000000000 --- a/security/nss/lib/freebl/mpi/mpi_sparc.c +++ /dev/null @@ -1,358 +0,0 @@ -/* - * The contents of this file are subject to the Mozilla Public - * License Version 1.1 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of - * the License at http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS - * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or - * implied. See the License for the specific language governing - * rights and limitations under the License. - * - * The Original Code is the Netscape security libraries. - * - * The Initial Developer of the Original Code is Netscape - * Communications Corporation. Portions created by Netscape are - * Copyright (C) 2000 Netscape Communications Corporation. All - * Rights Reserved. - * - * Contributor(s): - * - * Alternatively, the contents of this file may be used under the - * terms of the GNU General Public License Version 2 or later (the - * "GPL"), in which case the provisions of the GPL are applicable - * instead of those above. If you wish to allow use of your - * version of this file only under the terms of the GPL and not to - * allow others to use your version of this file under the MPL, - * indicate your decision by deleting the provisions above and - * replace them with the notice and other provisions required by - * the GPL. If you do not delete the provisions above, a recipient - * may use your version of this file under either the MPL or the - * GPL. - * $Id$ - */ - -/* Multiplication performance enhancements for sparc v8+vis CPUs. */ - -#include "mpi-priv.h" -#include <stddef.h> -#include <sys/systeminfo.h> -#include <strings.h> - -/* In the functions below, */ -/* vector y must be 8-byte aligned, and n must be even */ -/* returns carry out of high order word of result */ -/* maximum n is 256 */ - -/* vector x += vector y * scaler a; where y is of length n words. */ -extern mp_digit mul_add_inp(mp_digit *x, const mp_digit *y, int n, mp_digit a); - -/* vector z = vector x + vector y * scaler a; where y is of length n words. */ -extern mp_digit mul_add(mp_digit *z, const mp_digit *x, const mp_digit *y, - int n, mp_digit a); - -/* v8 versions of these functions run on any Sparc v8 CPU. */ - -/* This trick works on Sparc V8 CPUs with the Workshop compilers. */ -#define MP_MUL_DxD(a, b, Phi, Plo) \ - { unsigned long long product = (unsigned long long)a * b; \ - Plo = (mp_digit)product; \ - Phi = (mp_digit)(product >> MP_DIGIT_BIT); } - -/* c = a * b */ -static void -v8_mpv_mul_d(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ -#if !defined(MP_NO_MP_WORD) - mp_digit d = 0; - - /* Inner product: Digits of a */ - while (a_len--) { - mp_word w = ((mp_word)b * *a++) + d; - *c++ = ACCUM(w); - d = CARRYOUT(w); - } - *c = d; -#else - mp_digit carry = 0; - while (a_len--) { - mp_digit a_i = *a++; - mp_digit a0b0, a1b1; - - MP_MUL_DxD(a_i, b, a1b1, a0b0); - - a0b0 += carry; - if (a0b0 < carry) - ++a1b1; - *c++ = a0b0; - carry = a1b1; - } - *c = carry; -#endif -} - -/* c += a * b */ -static void -v8_mpv_mul_d_add(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ -#if !defined(MP_NO_MP_WORD) - mp_digit d = 0; - - /* Inner product: Digits of a */ - while (a_len--) { - mp_word w = ((mp_word)b * *a++) + *c + d; - *c++ = ACCUM(w); - d = CARRYOUT(w); - } - *c = d; -#else - mp_digit carry = 0; - while (a_len--) { - mp_digit a_i = *a++; - mp_digit a0b0, a1b1; - - MP_MUL_DxD(a_i, b, a1b1, a0b0); - - a0b0 += carry; - if (a0b0 < carry) - ++a1b1; - a0b0 += a_i = *c; - if (a0b0 < a_i) - ++a1b1; - *c++ = a0b0; - carry = a1b1; - } - *c = carry; -#endif -} - -/* Presently, this is only used by the Montgomery arithmetic code. */ -/* c += a * b */ -static void -v8_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ -#if !defined(MP_NO_MP_WORD) - mp_digit d = 0; - - /* Inner product: Digits of a */ - while (a_len--) { - mp_word w = ((mp_word)b * *a++) + *c + d; - *c++ = ACCUM(w); - d = CARRYOUT(w); - } - - while (d) { - mp_word w = (mp_word)*c + d; - *c++ = ACCUM(w); - d = CARRYOUT(w); - } -#else - mp_digit carry = 0; - while (a_len--) { - mp_digit a_i = *a++; - mp_digit a0b0, a1b1; - - MP_MUL_DxD(a_i, b, a1b1, a0b0); - - a0b0 += carry; - if (a0b0 < carry) - ++a1b1; - - a0b0 += a_i = *c; - if (a0b0 < a_i) - ++a1b1; - - *c++ = a0b0; - carry = a1b1; - } - while (carry) { - mp_digit c_i = *c; - carry += c_i; - *c++ = carry; - carry = carry < c_i; - } -#endif -} - -/* vis versions of these functions run only on v8+vis or v9+vis CPUs. */ - -/* c = a * b */ -static void -vis_mpv_mul_d(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - mp_digit d; - mp_digit x[258]; - if (a_len <= 256) { - if (a == c || ((ptrdiff_t)a & 0x7) != 0 || (a_len & 1) != 0) { - mp_digit * px; - px = (((ptrdiff_t)x & 0x7) != 0) ? x + 1 : x; - memcpy(px, a, a_len * sizeof(*a)); - a = px; - if (a_len & 1) { - px[a_len] = 0; - } - } - s_mp_setz(c, a_len + 1); - d = mul_add_inp(c, a, a_len, b); - c[a_len] = d; - } else { - v8_mpv_mul_d(a, a_len, b, c); - } -} - -/* c += a * b, where a is a_len words long. */ -static void -vis_mpv_mul_d_add(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - mp_digit d; - mp_digit x[258]; - if (a_len <= 256) { - if (((ptrdiff_t)a & 0x7) != 0 || (a_len & 1) != 0) { - mp_digit * px; - px = (((ptrdiff_t)x & 0x7) != 0) ? x + 1 : x; - memcpy(px, a, a_len * sizeof(*a)); - a = px; - if (a_len & 1) { - px[a_len] = 0; - } - } - d = mul_add_inp(c, a, a_len, b); - c[a_len] = d; - } else { - v8_mpv_mul_d_add(a, a_len, b, c); - } -} - -/* c += a * b, where a is y words long. */ -static void -vis_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, mp_digit b, - mp_digit *c) -{ - mp_digit d; - mp_digit x[258]; - if (a_len <= 256) { - if (((ptrdiff_t)a & 0x7) != 0 || (a_len & 1) != 0) { - mp_digit * px; - px = (((ptrdiff_t)x & 0x7) != 0) ? x + 1 : x; - memcpy(px, a, a_len * sizeof(*a)); - a = px; - if (a_len & 1) { - px[a_len] = 0; - } - } - d = mul_add_inp(c, a, a_len, b); - if (d) { - c += a_len; - do { - mp_digit sum = d + *c; - *c++ = sum; - d = sum < d; - } while (d); - } - } else { - v8_mpv_mul_d_add_prop(a, a_len, b, c); - } -} - -#if defined(SOLARIS2_5) -static int -isSparcV8PlusVis(void) -{ - long buflen; - int rv = 0; /* false */ - char buf[256]; - buflen = sysinfo(SI_MACHINE, buf, sizeof buf); - if (buflen > 0) { - rv = (!strcmp(buf, "sun4u") || !strcmp(buf, "sun4u1")); - } - return rv; -} -#else /* SunOS2.6or higher has SI_ISALIST */ - -static int -isSparcV8PlusVis(void) -{ - long buflen; - int rv = 0; /* false */ - char buf[256]; - buflen = sysinfo(SI_ISALIST, buf, sizeof buf); - if (buflen > 0) { -#if defined(MP_USE_LONG_DIGIT) - char * found = strstr(buf, "sparcv9+vis"); -#else - char * found = strstr(buf, "sparcv8plus+vis"); -#endif - rv = (found != 0); - } - return rv; -} -#endif - -typedef void MPVmpy(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c); - -/* forward static function declarations */ -static MPVmpy sp_mpv_mul_d; -static MPVmpy sp_mpv_mul_d_add; -static MPVmpy sp_mpv_mul_d_add_prop; - -static MPVmpy *p_mpv_mul_d = &sp_mpv_mul_d; -static MPVmpy *p_mpv_mul_d_add = &sp_mpv_mul_d_add; -static MPVmpy *p_mpv_mul_d_add_prop = &sp_mpv_mul_d_add_prop; - -static void -initPtrs(void) -{ - if (isSparcV8PlusVis()) { - p_mpv_mul_d = &vis_mpv_mul_d; - p_mpv_mul_d_add = &vis_mpv_mul_d_add; - p_mpv_mul_d_add_prop = &vis_mpv_mul_d_add_prop; - } else { - p_mpv_mul_d = &v8_mpv_mul_d; - p_mpv_mul_d_add = &v8_mpv_mul_d_add; - p_mpv_mul_d_add_prop = &v8_mpv_mul_d_add_prop; - } -} - -static void -sp_mpv_mul_d(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - initPtrs(); - (* p_mpv_mul_d)(a, a_len, b, c); -} - -static void -sp_mpv_mul_d_add(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - initPtrs(); - (* p_mpv_mul_d_add)(a, a_len, b, c); -} - -static void -sp_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - initPtrs(); - (* p_mpv_mul_d_add_prop)(a, a_len, b, c); -} - - -/* This is the external interface */ - -void -s_mpv_mul_d(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - (* p_mpv_mul_d)(a, a_len, b, c); -} - -void -s_mpv_mul_d_add(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - (* p_mpv_mul_d_add)(a, a_len, b, c); -} - -void -s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, mp_digit b, mp_digit *c) -{ - (* p_mpv_mul_d_add_prop)(a, a_len, b, c); -} - - |