gcc/config/frv/lib1funcs.asm

   1 /* Library functions.
   2    Copyright (C) 2000, 2003 Free Software Foundation, Inc.
   3    Contributed by Red Hat, Inc.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software ; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation * either version 2, or (at your option)
  10    any later version.
  11
  12    GCC is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY ; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING.  If not, write to
  19    the Free Software Foundation, 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 /* As a special exception, if you link this library with other files,
  23    some of which are compiled with GCC, to produce an executable,
  24    this library does not by itself cause the resulting executable
  25    to be covered by the GNU General Public License.
  26    This exception does not however invalidate any other reasons why
  27    the executable file might be covered by the GNU General Public License.  */
  28
  29 #include <frv-asm.h>
  30
  31 \f
  32 #ifdef L_cmpll
  33 /* icc0 = __cmpll (long long a, long long b)  */
  34
  35         .file   "_cmpll.s"
  36         .globl  EXT(__cmpll)
  37         .type   EXT(__cmpll),@function
  38         .text
  39         .p2align 4
  40 EXT(__cmpll):
  41         cmp     gr8, gr10, icc0
  42         ckeq    icc0, cc4
  43         P(ccmp) gr9, gr11, cc4, 1
  44         ret
  45 .Lend:
  46         .size   EXT(__cmpll),.Lend-EXT(__cmpll)
  47 #endif /* L_cmpll */
  48 \f
  49 #ifdef L_cmpf
  50 /* icc0 = __cmpf (float a, float b) */
  51 /* Note, because this function returns the result in ICC0, it means it can't
  52    handle NaNs.  */
  53
  54         .file   "_cmpf.s"
  55         .globl  EXT(__cmpf)
  56         .type   EXT(__cmpf),@function
  57         .text
  58         .p2align 4
  59 EXT(__cmpf):
  60 #ifdef __FRV_HARD_FLOAT__       /* floating point instructions available */
  61         movgf   gr8, fr0
  62         P(movgf) gr9, fr1
  63         setlos  #1, gr8
  64         fcmps   fr0, fr1, fcc0
  65         P(fcklt) fcc0, cc0
  66         fckeq   fcc0, cc1
  67         csub    gr0, gr8, gr8, cc0, 1
  68         cmov    gr0, gr8, cc1, 1
  69         cmpi    gr8, 0, icc0
  70         ret
  71 #else                           /* no floating point instructions available */
  72         movsg   lr, gr4
  73         addi    sp, #-16, sp
  74         sti     gr4, @(sp, 8)
  75         st      fp, @(sp, gr0)
  76         mov     sp, fp
  77         call    EXT(__cmpsf2)
  78         cmpi    gr8, #0, icc0
  79         ldi     @(sp, 8), gr4
  80         movgs   gr4, lr
  81         ld      @(sp,gr0), fp
  82         addi    sp, #16, sp
  83         ret
  84 #endif
  85 .Lend:
  86         .size   EXT(__cmpf),.Lend-EXT(__cmpf)
  87 #endif
  88 \f
  89 #ifdef L_cmpd
  90 /* icc0 = __cmpd (double a, double b) */
  91 /* Note, because this function returns the result in ICC0, it means it can't
  92    handle NaNs.  */
  93
  94         .file   "_cmpd.s"
  95         .globl  EXT(__cmpd)
  96         .type   EXT(__cmpd),@function
  97         .text
  98         .p2align 4
  99 EXT(__cmpd):
 100         movsg   lr, gr4
 101         addi    sp, #-16, sp
 102         sti     gr4, @(sp, 8)
 103         st      fp, @(sp, gr0)
 104         mov     sp, fp
 105         call    EXT(__cmpdf2)
 106         cmpi    gr8, #0, icc0
 107         ldi     @(sp, 8), gr4
 108         movgs   gr4, lr
 109         ld      @(sp,gr0), fp
 110         addi    sp, #16, sp
 111         ret
 112 .Lend:
 113         .size   EXT(__cmpd),.Lend-EXT(__cmpd)
 114 #endif
 115 \f
 116 #ifdef L_addll
 117 /* gr8,gr9 = __addll (long long a, long long b) */
 118 /* Note, gcc will never call this function, but it is present in case an
 119    ABI program calls it.  */
 120
 121         .file   "_addll.s"
 122         .globl  EXT(__addll)
 123         .type   EXT(__addll),@function
 124         .text
 125         .p2align
 126 EXT(__addll):
 127         addcc   gr9, gr11, gr9, icc0
 128         addx    gr8, gr10, gr8, icc0
 129         ret
 130 .Lend:
 131         .size   EXT(__addll),.Lend-EXT(__addll)
 132 #endif
 133 \f
 134 #ifdef L_subll
 135 /* gr8,gr9 = __subll (long long a, long long b) */
 136 /* Note, gcc will never call this function, but it is present in case an
 137    ABI program calls it.  */
 138
 139         .file   "_subll.s"
 140         .globl  EXT(__subll)
 141         .type   EXT(__subll),@function
 142         .text
 143         .p2align 4
 144 EXT(__subll):
 145         subcc   gr9, gr11, gr9, icc0
 146         subx    gr8, gr10, gr8, icc0
 147         ret
 148 .Lend:
 149         .size   EXT(__subll),.Lend-EXT(__subll)
 150 #endif
 151 \f
 152 #ifdef L_andll
 153 /* gr8,gr9 = __andll (long long a, long long b) */
 154 /* Note, gcc will never call this function, but it is present in case an
 155    ABI program calls it.  */
 156
 157         .file   "_andll.s"
 158         .globl  EXT(__andll)
 159         .type   EXT(__andll),@function
 160         .text
 161         .p2align 4
 162 EXT(__andll):
 163         P(and)  gr9, gr11, gr9
 164         P2(and) gr8, gr10, gr8
 165         ret
 166 .Lend:
 167         .size   EXT(__andll),.Lend-EXT(__andll)
 168 #endif
 169 \f
 170 #ifdef L_orll
 171 /* gr8,gr9 = __orll (long long a, long long b) */
 172 /* Note, gcc will never call this function, but it is present in case an
 173    ABI program calls it.  */
 174
 175         .file   "_orll.s"
 176         .globl  EXT(__orll)
 177         .type   EXT(__orll),@function
 178         .text
 179         .p2align 4
 180 EXT(__orll):
 181         P(or)   gr9, gr11, gr9
 182         P2(or)  gr8, gr10, gr8
 183         ret
 184 .Lend:
 185         .size   EXT(__orll),.Lend-EXT(__orll)
 186 #endif
 187 \f
 188 #ifdef L_xorll
 189 /* gr8,gr9 = __xorll (long long a, long long b) */
 190 /* Note, gcc will never call this function, but it is present in case an
 191    ABI program calls it.  */
 192
 193         .file   "_xorll.s"
 194         .globl  EXT(__xorll)
 195         .type   EXT(__xorll),@function
 196         .text
 197         .p2align 4
 198 EXT(__xorll):
 199         P(xor)  gr9, gr11, gr9
 200         P2(xor) gr8, gr10, gr8
 201         ret
 202 .Lend:
 203         .size   EXT(__xorll),.Lend-EXT(__xorll)
 204 #endif
 205 \f
 206 #ifdef L_notll
 207 /* gr8,gr9 = __notll (long long a) */
 208 /* Note, gcc will never call this function, but it is present in case an
 209    ABI program calls it.  */
 210
 211         .file   "_notll.s"
 212         .globl  EXT(__notll)
 213         .type   EXT(__notll),@function
 214         .text
 215         .p2align 4
 216 EXT(__notll):
 217         P(not)  gr9, gr9
 218         P2(not) gr8, gr8
 219         ret
 220 .Lend:
 221         .size   EXT(__notll),.Lend-EXT(__notll)
 222 #endif
 223 \f
 224 #ifdef L_cmov
 225 /* (void) __cmov (char *dest, const char *src, size_t len) */
 226 /*
 227  * void __cmov (char *dest, const char *src, size_t len)
 228  * {
 229  *   size_t i;
 230  *
 231  *   if (dest < src || dest > src+len)
 232  *     {
 233  *       for (i = 0; i < len; i++)
 234  *       dest[i] = src[i];
 235  *     }
 236  *   else
 237  *     {
 238  *       while (len-- > 0)
 239  *       dest[len] = src[len];
 240  *     }
 241  * }
 242  */
 243
 244         .file   "_cmov.s"
 245         .globl  EXT(__cmov)
 246         .type   EXT(__cmov),@function
 247         .text
 248         .p2align 4
 249 EXT(__cmov):
 250         P(cmp)  gr8, gr9, icc0
 251         add     gr9, gr10, gr4
 252         P(cmp)  gr8, gr4, icc1
 253         bc      icc0, 0, .Lfwd
 254         bls     icc1, 0, .Lback
 255 .Lfwd:
 256         /* move bytes in a forward direction */
 257         P(setlos) #0, gr5
 258         cmp     gr0, gr10, icc0
 259         P(subi) gr9, #1, gr9
 260         P2(subi) gr8, #1, gr8
 261         bnc     icc0, 0, .Lret
 262 .Lfloop:
 263         /* forward byte move loop */
 264         addi    gr5, #1, gr5
 265         P(ldsb) @(gr9, gr5), gr4
 266         cmp     gr5, gr10, icc0
 267         P(stb)  gr4, @(gr8, gr5)
 268         bc      icc0, 0, .Lfloop
 269         ret
 270 .Lbloop:
 271         /* backward byte move loop body */
 272         ldsb    @(gr9,gr10),gr4
 273         stb     gr4,@(gr8,gr10)
 274 .Lback:
 275         P(cmpi) gr10, #0, icc0
 276         addi    gr10, #-1, gr10
 277         bne     icc0, 0, .Lbloop
 278 .Lret:
 279         ret
 280 .Lend:
 281         .size    EXT(__cmov),.Lend-EXT(__cmov)
 282 #endif