sysdeps/sparc/sparc64/strchr.S

   1 /* strchr (str, ch) -- Return pointer to first occurrence of CH in STR.
   2    For SPARC v9.
   3    Copyright (C) 1998, 1999 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5    Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and
   6                   Jakub Jelinek <jj@ultra.linux.cz>.
   7
   8    The GNU C Library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU Library General Public License as
  10    published by the Free Software Foundation; either version 2 of the
  11    License, or (at your option) any later version.
  12
  13    The GNU C Library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    Library General Public License for more details.
  17
  18    You should have received a copy of the GNU Library General Public
  19    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  20    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #include <sysdep.h>
  24 #include <asm/asi.h>
  25 #ifndef XCC
  26 #define XCC xcc
  27 #define USE_BPR
  28 #endif
  29
  30         /* Normally, this uses
  31            ((xword - 0x0101010101010101) & 0x8080808080808080) test
  32            to find out if any byte in xword could be zero. This is fast, but
  33            also gives false alarm for any byte in range 0x81-0xff. It does
  34            not matter for correctness, as if this test tells us there could
  35            be some zero byte, we check it byte by byte, but if bytes with
  36            high bits set are common in the strings, then this will give poor
  37            performance. You can #define EIGHTBIT_NOT_RARE and the algorithm
  38            will use one tick slower, but more precise test
  39            ((xword - 0x0101010101010101) & (~xword) & 0x8080808080808080),
  40            which does not give any false alarms (but if some bits are set,
  41            one cannot assume from it which bytes are zero and which are not).
  42            It is yet to be measured, what is the correct default for glibc
  43            in these days for an average user.
  44          */
  45
  46         .text
  47         .align          32
  48 ENTRY(strchr)
  49         andcc           %o1, 0xff, %o1                  /* IEU1         Group           */
  50         be,pn           %icc, 17f                       /* CTI                          */
  51          sllx           %o1, 8, %g3                     /* IEU0         Group           */
  52         sethi           %hi(0x01010101), %g1            /* IEU1                         */
  53
  54         or              %g3, %o1, %g3                   /* IEU0         Group           */
  55         ldub            [%o0], %o3                      /* Load                         */
  56         sllx            %g3, 16, %g5                    /* IEU0         Group           */
  57         or              %g1, %lo(0x01010101), %g1       /* IEU1                         */
  58
  59         sllx            %g1, 32, %g2                    /* IEU0         Group           */
  60         brz,pn          %o3, 5f                         /* CTI+IEU1                     */
  61          orcc           %g3, %g5, %g3                   /* IEU1         Group           */
  62         sllx            %g3, 32, %g5                    /* IEU0                         */
  63
  64         cmp             %o3, %o1                        /* IEU1         Group           */
  65         be,pn           %xcc, 14f                       /* CTI                          */
  66          or             %g1, %g2, %g1                   /* IEU0                         */
  67         andcc           %o0, 7, %g0                     /* IEU1         Group           */
  68
  69         bne,a,pn        %icc, 15f                       /* CTI                          */
  70          add            %o0, 1, %o0                     /* IEU0                         */
  71         ldx             [%o0], %o3                      /* Load         Group           */
  72 1:      sllx            %g1, 7, %g2                     /* IEU0                         */
  73
  74         or              %g3, %g5, %g3                   /* IEU1                         */
  75         add             %o0, 8, %o0                     /* IEU0         Group           */
  76         xor             %o3, %g3, %o4                   /* IEU1                         */
  77                                                         /* %g1 = 0101010101010101       *
  78                                                          * %g2 = 8080088080808080       *
  79                                                          * %g3 =  c c c c c c c c       *
  80                                                          * %o3 =      value             *
  81                                                          * %o4 =   value XOR c          */
  82 2:      sub             %o3, %g1, %o2                   /* IEU0         Group           */
  83
  84         sub             %o4, %g1, %o5                   /* IEU1                         */
  85 #ifdef EIGHTBIT_NOT_RARE
  86         andn            %o2, %o3, %g7                   /* IEU0         Group           */
  87         andn            %o5, %o4, %o5                   /* IEU1                         */
  88         ldxa            [%o0] ASI_PNF, %o3              /* Load                         */
  89         or              %o5, %g7, %o5                   /* IEU0         Group           */
  90 #else
  91         ldxa            [%o0] ASI_PNF, %o3              /* Load                         */
  92         or              %o5, %o2, %o5                   /* IEU0         Group           */
  93 #endif
  94         add             %o0, 8, %o0                     /* IEU1                         */
  95
  96         andcc           %o5, %g2, %g0                   /* IEU1         Group           */
  97         be,a,pt         %xcc, 2b                        /* CTI                          */
  98          xor            %o3, %g3, %o4                   /* IEU0                         */
  99         srlx            %o5, 32, %g5                    /* IEU0         Group           */
 100
 101         add             %o2, %g1, %o2                   /* IEU1                         */
 102 3:      andcc           %g5, %g2, %g0                   /* IEU1         Group           */
 103         be,pn           %xcc, 4f                        /* CTI                          */
 104          srlx           %o2, 56, %g5                    /* IEU0                         */
 105
 106         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 107         be,pn           %icc, 5f                        /* CTI                          */
 108          srlx           %o4, 56, %g5                    /* IEU0                         */
 109         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 110
 111         be,pn           %icc, 6f                        /* CTI                          */
 112          srlx           %o2, 48, %g5                    /* IEU0                         */
 113         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 114         be,pn           %icc, 5f                        /* CTI                          */
 115
 116          srlx           %o4, 48, %g5                    /* IEU0                         */
 117         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 118         be,pn           %icc, 7f                        /* CTI                          */
 119          srlx           %o2, 40, %g5                    /* IEU0                         */
 120
 121         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 122         be,pn           %icc, 5f                        /* CTI                          */
 123          srlx           %o4, 40, %g5                    /* IEU0                         */
 124         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 125
 126         be,pn           %icc, 8f                        /* CTI                          */
 127          srlx           %o2, 32, %g5                    /* IEU0                         */
 128         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 129         be,pn           %icc, 5f                        /* CTI                          */
 130
 131          srlx           %o4, 32, %g5                    /* IEU0                         */
 132         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 133         be,pn           %icc, 9f                        /* CTI                          */
 134 4:       srlx           %o2, 24, %g5                    /* IEU0                         */
 135
 136         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 137         be,pn           %icc, 5f                        /* CTI                          */
 138          srlx           %o4, 24, %g5                    /* IEU0                         */
 139         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 140
 141         be,pn           %icc, 10f                       /* CTI                          */
 142          srlx           %o2, 16, %g5                    /* IEU0                         */
 143         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 144         be,pn           %icc, 5f                        /* CTI                          */
 145
 146          srlx           %o4, 16, %g5                    /* IEU0                         */
 147         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 148         be,pn           %icc, 11f                       /* CTI                          */
 149          srlx           %o2, 8, %g5                     /* IEU0                         */
 150
 151         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 152         be,pn           %icc, 5f                        /* CTI                          */
 153          srlx           %o4, 8, %g5                     /* IEU0                         */
 154         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 155
 156         be,pn           %icc, 12f                       /* CTI                          */
 157         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 158         be,pn           %icc, 5f                        /* CTI                          */
 159          sub            %o3, %g1, %o2                   /* IEU0                         */
 160
 161         andcc           %o4, 0xff, %g0                  /* IEU1         Group           */
 162         be,pn           %icc, 13f                       /* CTI                          */
 163          xor            %o3, %g3, %o4                   /* IEU0                         */
 164         ldxa            [%o0] ASI_PNF, %o3              /* Load         Group           */
 165
 166         sub             %o4, %g1, %o5                   /* IEU0                         */
 167         or              %o5, %o2, %o5                   /* IEU1                         */
 168         add             %o0, 8, %o0                     /* IEU0         Group           */
 169         andcc           %o5, %g2, %g0                   /* IEU1                         */
 170
 171         be,a,pt         %xcc, 2b                        /* CTI                          */
 172          xor            %o3, %g3, %o4                   /* IEU0         Group           */
 173         srlx            %o5, 32, %g5                    /* IEU0         Group           */
 174         ba,pt           %xcc, 3b                        /* CTI                          */
 175
 176          add            %o2, %g1, %o2                   /* IEU1                         */
 177
 178         .align          16
 179 5:      retl                                            /* CTI+IEU1     Group           */
 180          clr            %o0                             /* IEU0                         */
 181 6:      retl                                            /* CTI+IEU1     Group           */
 182          add            %o0, -16, %o0                   /* IEU0                         */
 183
 184 7:      retl                                            /* CTI+IEU1     Group           */
 185          add            %o0, -15, %o0                   /* IEU0                         */
 186 8:      retl                                            /* CTI+IEU1     Group           */
 187          add            %o0, -14, %o0                   /* IEU0                         */
 188
 189 9:      retl                                            /* CTI+IEU1     Group           */
 190          add            %o0, -13, %o0                   /* IEU0                         */
 191 10:     retl                                            /* CTI+IEU1     Group           */
 192          add            %o0, -12, %o0                   /* IEU0                         */
 193
 194 11:     retl                                            /* CTI+IEU1     Group           */
 195          add            %o0, -11, %o0                   /* IEU0                         */
 196 12:     retl                                            /* CTI+IEU1     Group           */
 197          add            %o0, -10, %o0                   /* IEU0                         */
 198
 199 13:     retl                                            /* CTI+IEU1     Group           */
 200          add            %o0, -9, %o0                    /* IEU0                         */
 201 14:     retl                                            /* CTI+IEU1     Group           */
 202          nop                                            /* IEU0                         */
 203
 204         .align          16
 205 15:     ldub            [%o0], %o3                      /* Load         Group           */
 206 16:     andcc           %o0, 7, %g0                     /* IEU1                         */
 207         be,a,pn         %icc, 1b                        /* CTI                          */
 208          ldx            [%o0], %o3                      /* Load         Group           */
 209
 210         andcc           %o3, 0xff, %g0                  /* IEU1         Group           */
 211         be,pn           %icc, 5b                        /* CTI                          */
 212          add            %o0, 1, %o0                     /* IEU0                         */
 213         cmp             %o3, %o1                        /* IEU1         Group           */
 214
 215         bne,a,pn        %icc, 16b                       /* CTI                          */
 216          ldub           [%o0], %o3                      /* Load                         */
 217         retl                                            /* CTI+IEU1     Group           */
 218          add            %o0, -1, %o0                    /* IEU0                         */
 219
 220         /* strchr (str, 0)                      */
 221         .align          32
 222         nop
 223         .align          16
 224 17:     sethi           %hi(0x01010101), %g1            /* IEU0         Group           */
 225         ldub            [%o0], %o3                      /* Load                         */
 226         or              %g1, %lo(0x01010101), %g1       /* IEU0         Group           */
 227         sllx            %g1, 32, %g2                    /* IEU0         Group           */
 228
 229         andcc           %o0, 7, %g0                     /* IEU1                         */
 230         or              %g1, %g2, %g1                   /* IEU0         Group           */
 231         bne,pn          %icc, 32f                       /* CTI                          */
 232          sllx           %g1, 7, %g2                     /* IEU0         Group           */
 233
 234         brz,pn          %o3, 30f                        /* CTI+IEU1                     */
 235          ldx            [%o0], %o3                      /* Load                         */
 236 18:     add             %o0, 8, %o0                     /* IEU0         Group           */
 237 19:     sub             %o3, %g1, %o2                   /* IEU0         Group           */
 238
 239 #ifdef EIGHTBIT_NOT_RARE
 240         andn            %o2, %o3, %g7                   /* IEU0         Group           */
 241         ldxa            [%o0] ASI_PNF, %o3              /* Load                         */
 242         andcc           %g7, %g2, %g0                   /* IEU1         Group           */
 243 #else
 244         ldxa            [%o0] ASI_PNF, %o3              /* Load                         */
 245         andcc           %o2, %g2, %g0                   /* IEU1         Group           */
 246 #endif
 247         be,pt           %xcc, 19b                       /* CTI                          */
 248          add            %o0, 8, %o0                     /* IEU0                         */
 249
 250         addcc           %o2, %g1, %g3                   /* IEU1         Group           */
 251         srlx            %o2, 32, %o2                    /* IEU0                         */
 252 20:     andcc           %o2, %g2, %g0                   /* IEU1         Group           */
 253         be,pn           %xcc, 21f                       /* CTI                          */
 254
 255          srlx           %g3, 56, %o2                    /* IEU0                         */
 256         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 257         be,pn           %icc, 29f                       /* CTI                          */
 258          srlx           %g3, 48, %o2                    /* IEU0                         */
 259
 260         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 261         be,pn           %icc, 28f                       /* CTI                          */
 262          srlx           %g3, 40, %o2                    /* IEU0                         */
 263         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 264
 265         be,pn           %icc, 27f                       /* CTI                          */
 266          srlx           %g3, 32, %o2                    /* IEU0                         */
 267         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 268         be,pn           %icc, 26f                       /* CTI                          */
 269
 270 21:      srlx           %g3, 24, %o2                    /* IEU0                         */
 271         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 272         be,pn           %icc, 25f                       /* CTI                          */
 273          srlx           %g3, 16, %o2                    /* IEU0                         */
 274
 275         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 276         be,pn           %icc, 24f                       /* CTI                          */
 277          srlx           %g3, 8, %o2                     /* IEU0                         */
 278         andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 279
 280         be,pn           %icc, 23f                       /* CTI                          */
 281          sub            %o3, %g1, %o2                   /* IEU0                         */
 282         andcc           %g3, 0xff, %g0                  /* IEU1         Group           */
 283         be,pn           %icc, 22f                       /* CTI                          */
 284
 285          ldxa           [%o0] ASI_PNF, %o3              /* Load                         */
 286         andcc           %o2, %g2, %g0                   /* IEU1         Group           */
 287         be,pt           %xcc, 19b                       /* CTI                          */
 288          add            %o0, 8, %o0                     /* IEU0                         */
 289
 290         addcc           %o2, %g1, %g3                   /* IEU1         Group           */
 291         ba,pt           %xcc, 20b                       /* CTI                          */
 292          srlx           %o2, 32, %o2                    /* IEU0                         */
 293
 294         .align          16
 295 22:     retl                                            /* CTI+IEU1     Group           */
 296          add            %o0, -9, %o0                    /* IEU0                         */
 297 23:     retl                                            /* CTI+IEU1     Group           */
 298          add            %o0, -10, %o0                   /* IEU0                         */
 299
 300 24:     retl                                            /* CTI+IEU1     Group           */
 301          add            %o0, -11, %o0                   /* IEU0                         */
 302 25:     retl                                            /* CTI+IEU1     Group           */
 303          add            %o0, -12, %o0                   /* IEU0                         */
 304
 305 26:     retl                                            /* CTI+IEU1     Group           */
 306          add            %o0, -13, %o0                   /* IEU0                         */
 307 27:     retl                                            /* CTI+IEU1     Group           */
 308          add            %o0, -14, %o0                   /* IEU0                         */
 309
 310 28:     retl                                            /* CTI+IEU1     Group           */
 311          add            %o0, -15, %o0                   /* IEU0                         */
 312 29:     retl                                            /* CTI+IEU1     Group           */
 313          add            %o0, -16, %o0                   /* IEU0                         */
 314
 315 30:     retl                                            /* CTI+IEU1     Group           */
 316          nop                                            /* IEU0                         */
 317
 318         .align          16
 319 32:     andcc           %o0, 7, %g0                     /* IEU1         Group           */
 320         be,a,pn         %icc, 18b                       /* CTI                          */
 321          ldx            [%o0], %o3                      /* Load                         */
 322         add             %o0, 1, %o0                     /* IEU0         Group           */
 323
 324         brnz,a,pt       %o3, 32b                        /* CTI+IEU1                     */
 325          lduba          [%o0] ASI_PNF, %o3              /* Load                         */
 326         retl                                            /* CTI+IEU1     Group           */
 327          add            %o0, -1, %o0                    /* IEU0                         */
 328 END(strchr)
 329
 330         .align          32
 331 ENTRY(strrchr)
 332         andcc           %o1, 0xff, %o1                  /* IEU1         Group           */
 333         be,pn           %icc, 17b                       /* CTI                          */
 334          clr            %g4                             /* IEU0                         */
 335         andcc           %o0, 7, %g0                     /* IEU1         Group           */
 336
 337         bne,pn          %icc, 13f                       /* CTI                          */
 338          sllx           %o1, 8, %g3                     /* IEU0                         */
 339         ldx             [%o0], %o3                      /* Load         Group           */
 340 1:      sethi           %hi(0x01010101), %g1            /* IEU0                         */
 341
 342         or              %g3, %o1, %g3                   /* IEU1                         */
 343         sllx            %g3, 16, %g5                    /* IEU0         Group           */
 344         or              %g1, %lo(0x01010101), %g1       /* IEU1                         */
 345         sllx            %g1, 32, %g2                    /* IEU0         Group           */
 346
 347         or              %g3, %g5, %g3                   /* IEU1                         */
 348         sllx            %g3, 32, %g5                    /* IEU0         Group           */
 349         or              %g1, %g2, %g1                   /* IEU1                         */
 350         sllx            %g1, 7, %g2                     /* IEU0         Group           */
 351
 352         or              %g3, %g5, %g3                   /* IEU1                         */
 353         add             %o0, 8, %o0                     /* IEU0         Group           */
 354         xor             %o3, %g3, %o4                   /* IEU1                         */
 355                                                         /* %g1 = 0101010101010101       *
 356                                                          * %g2 = 8080088080808080       *
 357                                                          * %g3 =  c c c c c c c c       *
 358                                                          * %o3 =   value                *
 359                                                          * %o4 =   value XOR c          */
 360 2:      sub             %o3, %g1, %o2                   /* IEU0         Group           */
 361
 362 3:      sub             %o4, %g1, %o5                   /* IEU1                         */
 363 #ifdef EIGHTBIT_NOT_RARE
 364         andn            %o2, %o3, %g7                   /* IEU0         Group           */
 365         andn            %o5, %o4, %o5                   /* IEU1                         */
 366         ldxa            [%o0] ASI_PNF, %o3              /* Load                         */
 367
 368         or              %o5, %g7, %o5                   /* IEU0         Group           */
 369 #else
 370         ldxa            [%o0] ASI_PNF, %o3              /* Load                         */
 371
 372         or              %o5, %o2, %o5                   /* IEU0         Group           */
 373 #endif
 374         add             %o0, 8, %o0                     /* IEU1                         */
 375         andcc           %o5, %g2, %g0                   /* IEU1         Group           */
 376         be,a,pt         %xcc, 2b                        /* CTI                          */
 377
 378          xor            %o3, %g3, %o4                   /* IEU0                         */
 379         srlx            %o5, 32, %g5                    /* IEU0         Group           */
 380         add             %o2, %g1, %o2                   /* IEU1                         */
 381         andcc           %g5, %g2, %g0                   /* IEU1         Group           */
 382
 383         be,pn           %xcc, 7f                        /* CTI                          */
 384          srlx           %o2, 56, %g5                    /* IEU0                         */
 385         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 386         be,pn           %icc, 12f                       /* CTI                          */
 387
 388          srlx           %o4, 56, %g5                    /* IEU0                         */
 389         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 390         srlx            %o2, 48, %g5                    /* IEU0                         */
 391         be,a,pn         %icc, 4f                        /* CTI                          */
 392
 393          add            %o0, -16, %g4                   /* IEU0         Group           */
 394 4:      andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 395         be,pn           %icc, 12f                       /* CTI                          */
 396          srlx           %o4, 48, %g5                    /* IEU0                         */
 397
 398         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 399         srlx            %o2, 40, %g5                    /* IEU0                         */
 400         be,a,pn         %icc, 5f                        /* CTI                          */
 401          add            %o0, -15, %g4                   /* IEU0         Group           */
 402
 403 5:      andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 404         be,pn           %icc, 12f                       /* CTI                          */
 405          srlx           %o4, 40, %g5                    /* IEU0                         */
 406         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 407
 408         srlx            %o2, 32, %g5                    /* IEU0                         */
 409         be,a,pn         %icc, 6f                        /* CTI                          */
 410          add            %o0, -14, %g4                   /* IEU0         Group           */
 411 6:      andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 412
 413         be,pn           %icc, 12f                       /* CTI                          */
 414          srlx           %o4, 32, %g5                    /* IEU0                         */
 415         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 416         be,a,pn         %icc, 7f                        /* CTI                          */
 417
 418          add            %o0, -13, %g4                   /* IEU0                         */
 419 7:      srlx            %o2, 24, %g5                    /* IEU0                         */
 420         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 421         be,pn           %icc, 12f                       /* CTI                          */
 422
 423          srlx           %o4, 24, %g5                    /* IEU0                         */
 424         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 425         srlx            %o2, 16, %g5                    /* IEU0                         */
 426         be,a,pn         %icc, 8f                        /* CTI                          */
 427
 428          add            %o0, -12, %g4                   /* IEU0         Group           */
 429 8:      andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 430         be,pn           %icc, 12f                       /* CTI                          */
 431          srlx           %o4, 16, %g5                    /* IEU0                         */
 432
 433         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 434         srlx            %o2, 8, %g5                     /* IEU0                         */
 435         be,a,pn         %icc, 9f                        /* CTI                          */
 436          add            %o0, -11, %g4                   /* IEU0         Group           */
 437
 438 9:      andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 439         be,pn           %icc, 12f                       /* CTI                          */
 440          srlx           %o4, 8, %g5                     /* IEU0                         */
 441         andcc           %g5, 0xff, %g0                  /* IEU1         Group           */
 442
 443         be,a,pn         %icc, 10f                       /* CTI                          */
 444          add            %o0, -10, %g4                   /* IEU0                         */
 445 10:     andcc           %o2, 0xff, %g0                  /* IEU1         Group           */
 446         be,pn           %icc, 12f                       /* CTI                          */
 447
 448          sub            %o3, %g1, %o2                   /* IEU0                         */
 449         andcc           %o4, 0xff, %g0                  /* IEU1         Group           */
 450         be,a,pn         %icc, 11f                       /* CTI                          */
 451          add            %o0, -9, %g4                    /* IEU0                         */
 452
 453 11:     ba,pt           %xcc, 3b                        /* CTI          Group           */
 454          xor            %o3, %g3, %o4                   /* IEU0         Group           */
 455 12:     retl                                            /* CTI+IEU1     Group           */
 456          mov            %g4, %o0                        /* IEU0                         */
 457
 458         .align          16
 459 13:     ldub            [%o0], %o3                      /* Load         Group           */
 460         add             %o0, 1, %o0                     /* IEU0                         */
 461 14:     andcc           %o3, 0xff, %g0                  /* IEU1         Group           */
 462         be,pn           %icc, 12b                       /* CTI                          */
 463
 464         cmp             %o3, %o1                        /* IEU1         Group           */
 465         ldub            [%o0], %o3                      /* Load                         */
 466         be,a,pn         %icc, 15f                       /* CTI                          */
 467          add            %o0, -1, %g4                    /* IEU0         Group           */
 468
 469 15:     andcc           %o0, 7, %g0                     /* IEU1         Group           */
 470         bne,a,pt        %icc, 14b                       /* CTI                          */
 471          add            %o0, 1, %o0                     /* IEU0                         */
 472         ba,pt           %xcc, 1b                        /* CTI          Group           */
 473
 474          ldx            [%o0], %o3                      /* Load                         */
 475 END(strrchr)
 476
 477 weak_alias (strchr, index)
 478 weak_alias (strrchr, rindex)