target/hexagon/mmvec/system_ext_mmvec.c

   1 /*
   2  *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "qemu/osdep.h"
  19 #include "cpu.h"
  20 #include "mmvec/system_ext_mmvec.h"
  21
  22 void mem_gather_store(CPUHexagonState *env, target_ulong vaddr, int slot)
  23 {
  24     size_t size = sizeof(MMVector);
  25
  26     env->vstore_pending[slot] = 1;
  27     env->vstore[slot].va   = vaddr;
  28     env->vstore[slot].size = size;
  29     memcpy(&env->vstore[slot].data.ub[0], &env->tmp_VRegs[0], size);
  30
  31     /* On a gather store, overwrite the store mask to emulate dropped gathers */
  32     bitmap_copy(env->vstore[slot].mask, env->vtcm_log.mask, size);
  33 }
  34
  35 void mem_vector_scatter_init(CPUHexagonState *env)
  36 {
  37     bitmap_zero(env->vtcm_log.mask, MAX_VEC_SIZE_BYTES);
  38
  39     env->vtcm_pending = true;
  40     env->vtcm_log.op = false;
  41     env->vtcm_log.op_size = 0;
  42 }
  43
  44 void mem_vector_gather_init(CPUHexagonState *env)
  45 {
  46     bitmap_zero(env->vtcm_log.mask, MAX_VEC_SIZE_BYTES);
  47 }