gdb/testsuite/gdb.arch/i386-sse.c

   1 /* Test program for SSE registers.
   2
   3    Copyright 2004, 2007, 2008 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program 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 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include <stdio.h>
  21 #include "i386-cpuid.h"
  22
  23 typedef struct {
  24   float f[4];
  25 } v4sf_t;
  26
  27
  28 v4sf_t data[8] =
  29   {
  30     { {  0.0, 0.25, 0.50, 0.75 } },
  31     { {  1.0, 1.25, 1.50, 1.75 } },
  32     { {  2.0, 2.25, 2.50, 2.75 } },
  33     { {  3.0, 3.25, 3.50, 3.75 } },
  34     { {  4.0, 4.25, 4.50, 4.75 } },
  35     { {  5.0, 5.25, 5.50, 5.75 } },
  36     { {  6.0, 6.25, 6.50, 6.75 } },
  37     { {  7.0, 7.25, 7.50, 7.75 } },
  38   };
  39
  40
  41 int
  42 have_sse (void)
  43 {
  44   int edx = i386_cpuid ();
  45
  46   if (edx & bit_SSE)
  47     return 1;
  48   else
  49     return 0;
  50 }
  51
  52 int
  53 main (int argc, char **argv)
  54 {
  55   if (have_sse ())
  56     {
  57       asm ("movaps 0(%0), %%xmm0\n\t"
  58            "movaps 16(%0), %%xmm1\n\t"
  59            "movaps 32(%0), %%xmm2\n\t"
  60            "movaps 48(%0), %%xmm3\n\t"
  61            "movaps 64(%0), %%xmm4\n\t"
  62            "movaps 80(%0), %%xmm5\n\t"
  63            "movaps 96(%0), %%xmm6\n\t"
  64            "movaps 112(%0), %%xmm7\n\t"
  65            : /* no output operands */
  66            : "r" (data)
  67            : "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7");
  68
  69       puts ("Hi!"); /* first breakpoint here */
  70
  71       asm (
  72            "movaps %%xmm0, 0(%0)\n\t"
  73            "movaps %%xmm1, 16(%0)\n\t"
  74            "movaps %%xmm2, 32(%0)\n\t"
  75            "movaps %%xmm3, 48(%0)\n\t"
  76            "movaps %%xmm4, 64(%0)\n\t"
  77            "movaps %%xmm5, 80(%0)\n\t"
  78            "movaps %%xmm6, 96(%0)\n\t"
  79            "movaps %%xmm7, 112(%0)\n\t"
  80            : /* no output operands */
  81            : "r" (data)
  82            : "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7");
  83
  84       puts ("Bye!"); /* second breakpoint here */
  85     }
  86
  87   return 0;
  88 }