chiark - git - mdw - catacomb/blob - math/mpx-mul4-test.c

   1 /* -*-c-*-
   2  *
   3  * Testing optimized 128-bit multipliers
   4  *
   5  * (c) 2017 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of Catacomb.
  11  *
  12  * Catacomb is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU Library General Public License as
  14  * published by the Free Software Foundation; either version 2 of the
  15  * License, or (at your option) any later version.
  16  *
  17  * Catacomb is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU Library General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Library General Public
  23  * License along with Catacomb; if not, write to the Free
  24  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  25  * MA 02111-1307, USA.
  26  */
  27
  28 /*----- Header files ------------------------------------------------------*/
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <string.h>
  36
  37 #include <mLib/macros.h>
  38 #include <mLib/report.h>
  39 #include <mLib/testrig.h>
  40
  41 #include "dispatch.h"
  42 #include "mp.h"
  43 #include "mpmont.h"
  44 #include "mptext.h"
  45
  46 /*----- CPU feature detection ---------------------------------------------*/
  47
  48 #if CPUFAM_X86
  49 #  define VARIANT _x86_sse2
  50 #  define REPR_32
  51 static int cpu_features_p(void) { return (cpu_feature_p(CPUFEAT_X86_SSE2)); }
  52 #endif
  53
  54 #if CPUFAM_AMD64
  55 #  define VARIANT _amd64_sse2
  56 #  define REPR_32
  57 static int cpu_features_p(void) { return (cpu_feature_p(CPUFEAT_X86_SSE2)); }
  58 #endif
  59
  60 #ifndef VARIANT
  61 #  error "Unsupported CPU family."
  62 #endif
  63
  64 #ifdef REPR_32
  65 #  define NWBY 4
  66 #  define NDBY 8
  67 #  define LDW LOAD32
  68 #  define LDD LOAD64
  69 #  define STW STORE32
  70 #  define STD STORE64
  71 typedef struct { mpw w[4]; } p128;
  72 typedef struct { mpw w[8]; } x128;
  73 typedef struct { mpd w[6]; } carry;
  74 #endif
  75
  76 /*----- Test operation table ----------------------------------------------*/
  77
  78 #define TESTOPS(_)                                                      \
  79          /*  a     c      u     x     v     y    z'    y'     c' */     \
  80   _(dmul4, NIL,  CARRY, P128, P128, P128, P128, P128, NIL,  CARRY)      \
  81   _(dmla4, P128, CARRY, P128, P128, P128, P128, P128, NIL,  CARRY)      \
  82   _(mul4,  NIL,  CARRY, NIL,  P128, NIL,  P128, P128, NIL,  CARRY)      \
  83   _(mla4,  P128, CARRY, NIL,  P128, NIL,  P128, P128, NIL,  CARRY)      \
  84   _(mmul4, NIL,  NIL,   P128, P128, P128, P128, P128, X128, CARRY)      \
  85   _(mmla4, P128, NIL,   P128, P128, P128, P128, P128, X128, CARRY)      \
  86   _(mont4, P128, NIL,   NIL,  P128, NIL,  P128, P128, X128, CARRY)
  87
  88 /*----- Assembler test interface ------------------------------------------*/
  89
  90 #define EMPTY
  91
  92 #define PARAM(v, ty) ty *v,
  93 #define PARAM_NIL(v, q)
  94 #define PARAM_P128(v, q) PARAM(v, q p128)
  95 #define PARAM_X128(v, q) PARAM(v, q x128)
  96 #define PARAM_CARRY(v, q) PARAM(v, q carry)
  97
  98 #define DECLSTUB(fn, tya, tyc, tyu, tyx, tyv, tyy, tyzz, tyyy, tycc)    \
  99   extern void test_##fn(PARAM_##tyzz(zz, EMPTY) PARAM_##tycc(cc, EMPTY) \
 100                         PARAM_##tyyy(yy, EMPTY)                         \
 101                         PARAM_##tyu(u, const) PARAM_##tyx(x, const)     \
 102                         PARAM_##tyv(v, const) PARAM_##tyy(y, const)     \
 103                         unsigned n, unsigned long long *cyv);
 104 TESTOPS(DECLSTUB)
 105
 106 /*----- Conversion functions ----------------------------------------------*/
 107
 108 #define DEFTYPE(ty, ld, st, nby)                                        \
 109                                                                         \
 110   static void cvt_##ty(const char *buf, dstr *d)                        \
 111   {                                                                     \
 112     dstr dd = DSTR_INIT;                                                \
 113     int i;                                                              \
 114     ty *x;                                                              \
 115     const octet *p;                                                     \
 116                                                                         \
 117     type_hex.cvt(buf, &dd);                                             \
 118     if (dd.len != N(x->w)*nby) die(1, "invalid length for " #ty);       \
 119     dstr_ensure(d, sizeof(*x)); d->len = sizeof(*x);                    \
 120     x = (ty *)d->buf; p = (const octet *)dd.buf;                        \
 121     for (i = 0; i < N(x->w); i++) { x->w[i] = ld(p); p += nby; }        \
 122     dstr_destroy(&dd);                                                  \
 123   }                                                                     \
 124                                                                         \
 125   static void dump_##ty(dstr *d, FILE *fp)                              \
 126   {                                                                     \
 127     dstr dd = DSTR_INIT;                                                \
 128     int i;                                                              \
 129     const ty *x = (const ty *)d->buf;                                   \
 130     octet *p;                                                           \
 131                                                                         \
 132     dstr_ensure(&dd, N(x->w)*nby); p = (octet *)dd.buf;                 \
 133     for (i = 0; i < N(x->w); i++) { st(p, x->w[i]); p += nby; }         \
 134     dd.len = N(x->w)*nby;                                               \
 135     type_hex.dump(&dd, fp);                                             \
 136     dstr_destroy(&dd);                                                  \
 137   }                                                                     \
 138                                                                         \
 139   static int eq_##ty(const ty *x, const ty *y)                          \
 140   {                                                                     \
 141     int i;                                                              \
 142                                                                         \
 143     for (i = 0; i < N(x->w); i++)                                       \
 144       if (x->w[i] != y->w[i]) return (0);                               \
 145     return (1);                                                         \
 146   }                                                                     \
 147                                                                         \
 148   static const struct test_type type_##ty = { cvt_##ty, dump_##ty };
 149
 150 DEFTYPE(p128, LDW, STW, NWBY)
 151 DEFTYPE(x128, LDW, STW, NWBY)
 152 DEFTYPE(carry, LDD, STD, NDBY)
 153
 154 /*----- Test functions ----------------------------------------------------*/
 155
 156 #define DECL_IN(v, ty) \
 157   dstr *d_##v = dp++; const ty *v = (const ty *)d_##v->buf;
 158 #define DECL_IN_NIL(v)
 159 #define DECL_IN_P128(v) DECL_IN(v, p128)
 160 #define DECL_IN_X128(v) DECL_IN(v, x128)
 161 #define DECL_IN_CARRY(v) DECL_IN(v, carry)
 162
 163 #define DECL_OUT(v, ty) \
 164   dstr dd_##v = DSTR_INIT, *d_##v = &dd_##v; ty *v;
 165 #define DECL_OUT_NIL(v)
 166 #define DECL_OUT_P128(v) DECL_OUT(v, p128)
 167 #define DECL_OUT_X128(v) DECL_OUT(v, x128)
 168 #define DECL_OUT_CARRY(v) DECL_OUT(v, carry)
 169
 170 #define INIT_OUT(v, ty) \
 171   dstr_ensure(d_##v, sizeof(ty)); v = (ty *)d_##v->buf;
 172 #define INIT_OUT_NIL(v)
 173 #define INIT_OUT_P128(v) INIT_OUT(v, p128)
 174 #define INIT_OUT_X128(v) INIT_OUT(v, x128)
 175 #define INIT_OUT_CARRY(v) INIT_OUT(v, carry)
 176
 177 #define ARG(v) , v
 178 #define ARG_NIL(v)
 179 #define ARG_P128(v) ARG(v)
 180 #define ARG_X128(v) ARG(v)
 181 #define ARG_CARRY(v) ARG(v)
 182
 183 #define CHECK(v, vv, ty) if (!eq_##ty(v, vv)) ok = 0;
 184 #define CHECK_NIL(v, vv)
 185 #define CHECK_P128(v, vv) CHECK(v, vv, p128)
 186 #define CHECK_X128(v, vv) CHECK(v, vv, x128)
 187 #define CHECK_CARRY(v, vv) CHECK(v, vv, carry)
 188
 189 #define DUMP(v, ty) \
 190   fprintf(stderr, "\n\t%-6s = ", #v); dump_##ty(d_##v, stderr);
 191 #define DUMP_NIL(v)
 192 #define DUMP_P128(v) DUMP(v, p128)
 193 #define DUMP_X128(v) DUMP(v, x128)
 194 #define DUMP_CARRY(v) DUMP(v, carry)
 195
 196 #define COPY(v, vv, ty) *v = *vv;
 197 #define COPY_NIL(v, vv)
 198 #define COPY_P128(v, vv) COPY(v, vv, p128)
 199 #define COPY_X128(v, vv) COPY(v, vv, x128)
 200 #define COPY_CARRY(v, vv) COPY(v, vv, carry)
 201
 202 #define FREE_OUT(v, ty) dstr_destroy(d_##v);
 203 #define FREE_OUT_NIL(v)
 204 #define FREE_OUT_P128(v) FREE_OUT(v, p128)
 205 #define FREE_OUT_X128(v) FREE_OUT(v, x128)
 206 #define FREE_OUT_CARRY(v) FREE_OUT(v, carry)
 207
 208 #define DEFTESTFN(fn, tya, tyc, tyu, tyx, tyv, tyy, tyzz, tyyy, tycc)   \
 209                                                                         \
 210   static int v##fn(dstr dv[])                                           \
 211   {                                                                     \
 212     dstr *dp = dv;                                                      \
 213     DECL_IN_##tya(a)                                                    \
 214     DECL_IN_##tyc(c)                                                    \
 215     DECL_IN_##tyu(u)                                                    \
 216     DECL_IN_##tyx(x)                                                    \
 217     DECL_IN_##tyv(v)                                                    \
 218     DECL_IN_##tyy(y)                                                    \
 219     DECL_IN_##tyzz(zz_exp)                                              \
 220     DECL_IN_##tyyy(yy_exp)                                              \
 221     DECL_IN_##tycc(cc_exp)                                              \
 222     DECL_OUT_##tyzz(zz_out)                                             \
 223     DECL_OUT_##tyyy(yy_out)                                             \
 224     DECL_OUT_##tycc(cc_out)                                             \
 225     unsigned long long cyv[1];                                          \
 226     int ok = 1;                                                         \
 227                                                                         \
 228     INIT_OUT_##tyzz(zz_out)                                             \
 229     INIT_OUT_##tyyy(yy_out)                                             \
 230     INIT_OUT_##tycc(cc_out)                                             \
 231                                                                         \
 232     COPY_##tya(zz_out, a);                                              \
 233     COPY_##tyc(cc_out, c);                                              \
 234     test_##fn(zz_out ARG_##tycc(cc_out) ARG_##tyyy(yy_out)              \
 235               ARG_##tyu(u) ARG_##tyx(x) ARG_##tyv(v) ARG_##tyy(y),      \
 236               1, cyv);                                                  \
 237     CHECK_##tyzz(zz_exp, zz_out)                                        \
 238     CHECK_##tyyy(yy_exp, yy_out)                                        \
 239     CHECK_##tycc(cc_exp, cc_out)                                        \
 240                                                                         \
 241     if (!ok) {                                                          \
 242       fputs(#fn " failed", stderr);                                     \
 243       DUMP_##tya(a)                                                     \
 244       DUMP_##tyc(c)                                                     \
 245       DUMP_##tyu(u)                                                     \
 246       DUMP_##tyx(x)                                                     \
 247       DUMP_##tyv(v)                                                     \
 248       DUMP_##tyy(y)                                                     \
 249       DUMP_##tyzz(zz_exp)                                               \
 250       DUMP_##tyzz(zz_out)                                               \
 251       DUMP_##tyyy(yy_exp)                                               \
 252       DUMP_##tyyy(yy_out)                                               \
 253       DUMP_##tycc(cc_exp)                                               \
 254       DUMP_##tycc(cc_out)                                               \
 255       fputc('\n', stderr);                                              \
 256     }                                                                   \
 257                                                                         \
 258     FREE_OUT_##tyzz(zz_out);                                            \
 259     FREE_OUT_##tyyy(yy_out);                                            \
 260     FREE_OUT_##tycc(cc_out);                                            \
 261                                                                         \
 262     return (ok);                                                        \
 263   }
 264
 265 TESTOPS(DEFTESTFN)
 266
 267 /*----- Main code ---------------------------------------------------------*/
 268
 269 #define NIL
 270 #define P128 &type_p128,
 271 #define X128 &type_x128,
 272 #define CARRY &type_carry,
 273
 274 static test_chunk tests[] = {
 275 #define DEFCHUNK(fn, tya, tyc, tyu, tyx, tyv, tyy, tyzz, tyyy, tycc)    \
 276   { #fn, v##fn, { tya tyc tyu tyx tyv tyy tyzz tyyy tycc } },
 277   TESTOPS(DEFCHUNK)
 278 #undef DEFCHUNK
 279   { 0, 0, { 0 } }
 280 };
 281
 282 int main(int argc, char *argv[])
 283 {
 284   sub_init();
 285   if (!cpu_features_p())
 286     { fprintf(stderr, "required cpu feature not available\n"); exit(77); }
 287   test_run(argc, argv, tests, SRCDIR "/t/mpx-mul4");
 288   return (0);
 289 }
 290
 291 /*----- That's all, folks -------------------------------------------------*/