gdb/testsuite/gdb.reverse/insn-reverse-aarch64.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2015-2019 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <arm_neon.h>
  19
  20 static void
  21 load (void)
  22 {
  23   int buf[8];
  24
  25   asm ("ld1 { v1.8b }, [%[buf]]\n"
  26        "ld1 { v2.8b, v3.8b }, [%[buf]]\n"
  27        "ld1 { v3.8b, v4.8b, v5.8b }, [%[buf]]\n"
  28        :
  29        : [buf] "r" (buf)
  30        : /* No clobbers */);
  31 }
  32
  33 static void
  34 move (void)
  35 {
  36   float32x2_t b1_ = vdup_n_f32(123.0f);
  37   float32_t a1_ = 0;
  38   float64x1_t b2_ = vdup_n_f64(456.0f);
  39   float64_t a2_ = 0;
  40
  41   asm ("ins %0.s[0], %w1\n"
  42        : "=w"(b1_)
  43        : "r"(a1_), "0"(b1_)
  44        : /* No clobbers */);
  45
  46   asm ("ins %0.d[1], %x1\n"
  47        : "=w"(b2_)
  48        : "r"(a2_), "0"(b2_)
  49        : /* No clobbers */);
  50 }
  51
  52 static void
  53 adv_simd_mod_imm (void)
  54 {
  55   float32x2_t a1 = {2.0, 4.0};
  56
  57   asm ("bic %0.2s, #1\n"
  58        "bic %0.2s, #1, lsl #8\n"
  59        : "=w"(a1)
  60        : "0"(a1)
  61        : /* No clobbers */);
  62 }
  63
  64 static void
  65 adv_simd_scalar_index (void)
  66 {
  67   float64x2_t b_ = {0.0, 0.0};
  68   float64_t a_ = 1.0;
  69   float64_t result;
  70
  71   asm ("fmla %d0,%d1,%2.d[1]"
  72        : "=w"(result)
  73        : "w"(a_), "w"(b_)
  74        : /* No clobbers */);
  75 }
  76
  77 static void
  78 adv_simd_smlal (void)
  79 {
  80   asm ("smlal v13.2d, v8.2s, v0.2s");
  81 }
  82
  83 static void
  84 adv_simd_vect_shift (void)
  85 {
  86   asm ("fcvtzs s0, s0, #1");
  87 }
  88
  89 /* Initialize arch-specific bits.  */
  90
  91 static void initialize (void)
  92 {
  93   /* AArch64 doesn't currently use this function.  */
  94 }
  95
  96 /* Functions testing instruction decodings.  GDB will test all of these.  */
  97 static testcase_ftype testcases[] =
  98 {
  99   load,
 100   move,
 101   adv_simd_mod_imm,
 102   adv_simd_scalar_index,
 103   adv_simd_smlal,
 104   adv_simd_vect_shift,
 105 };