target-xtensa/op_helper.c

   1 /*
   2  * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  *     * Redistributions of source code must retain the above copyright
   8  *       notice, this list of conditions and the following disclaimer.
   9  *     * Redistributions in binary form must reproduce the above copyright
  10  *       notice, this list of conditions and the following disclaimer in the
  11  *       documentation and/or other materials provided with the distribution.
  12  *     * Neither the name of the Open Source and Linux Lab nor the
  13  *       names of its contributors may be used to endorse or promote products
  14  *       derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  20  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "cpu.h"
  29 #include "dyngen-exec.h"
  30 #include "helpers.h"
  31 #include "host-utils.h"
  32
  33 #define MMUSUFFIX _mmu
  34
  35 #define SHIFT 0
  36 #include "softmmu_template.h"
  37
  38 #define SHIFT 1
  39 #include "softmmu_template.h"
  40
  41 #define SHIFT 2
  42 #include "softmmu_template.h"
  43
  44 #define SHIFT 3
  45 #include "softmmu_template.h"
  46
  47 void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
  48 {
  49     tlb_set_page(cpu_single_env,
  50             addr & ~(TARGET_PAGE_SIZE - 1),
  51             addr & ~(TARGET_PAGE_SIZE - 1),
  52             PAGE_READ | PAGE_WRITE | PAGE_EXEC,
  53             mmu_idx, TARGET_PAGE_SIZE);
  54 }
  55
  56 void HELPER(exception)(uint32_t excp)
  57 {
  58     env->exception_index = excp;
  59     cpu_loop_exit(env);
  60 }
  61
  62 uint32_t HELPER(nsa)(uint32_t v)
  63 {
  64     if (v & 0x80000000) {
  65         v = ~v;
  66     }
  67     return v ? clz32(v) - 1 : 31;
  68 }
  69
  70 uint32_t HELPER(nsau)(uint32_t v)
  71 {
  72     return v ? clz32(v) : 32;
  73 }