LXR qemu/include/exec/cpu_ldst_useronly

   1/*
   2 *  User-only accessor function support
   3 *
   4 * Generate inline load/store functions for one data size.
   5 *
   6 * Generate a store function as well as signed and unsigned loads.
   7 *
   8 * Not used directly but included from cpu_ldst.h.
   9 *
  10 *  Copyright (c) 2015 Linaro Limited
  11 *
  12 * This library is free software; you can redistribute it and/or
  13 * modify it under the terms of the GNU Lesser General Public
  14 * License as published by the Free Software Foundation; either
  15 * version 2 of the License, or (at your option) any later version.
  16 *
  17 * This library is distributed in the hope that it will be useful,
  18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20 * Lesser General Public License for more details.
  21 *
  22 * You should have received a copy of the GNU Lesser General Public
  23 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  24 */
  25
  26#if !defined(CODE_ACCESS)
  27#include "trace-root.h"
  28#endif
  29
  30#include "trace/mem.h"
  31
  32#if DATA_SIZE == 8
  33#define SUFFIX q
  34#define USUFFIX q
  35#define DATA_TYPE uint64_t
  36#define SHIFT 3
  37#elif DATA_SIZE == 4
  38#define SUFFIX l
  39#define USUFFIX l
  40#define DATA_TYPE uint32_t
  41#define SHIFT 2
  42#elif DATA_SIZE == 2
  43#define SUFFIX w
  44#define USUFFIX uw
  45#define DATA_TYPE uint16_t
  46#define DATA_STYPE int16_t
  47#define SHIFT 1
  48#elif DATA_SIZE == 1
  49#define SUFFIX b
  50#define USUFFIX ub
  51#define DATA_TYPE uint8_t
  52#define DATA_STYPE int8_t
  53#define SHIFT 0
  54#else
  55#error unsupported data size
  56#endif
  57
  58#if DATA_SIZE == 8
  59#define RES_TYPE uint64_t
  60#else
  61#define RES_TYPE uint32_t
  62#endif
  63
  64static inline RES_TYPE
  65glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr)
  66{
  67#ifdef CODE_ACCESS
  68    RES_TYPE ret;
  69    set_helper_retaddr(1);
  70    ret = glue(glue(ld, USUFFIX), _p)(g2h(ptr));
  71    clear_helper_retaddr();
  72    return ret;
  73#else
  74    trace_guest_mem_before_exec(
  75        env_cpu(env), ptr,
  76        trace_mem_build_info(SHIFT, false, MO_TE, false));
  77    return glue(glue(ld, USUFFIX), _p)(g2h(ptr));
  78#endif
  79}
  80
  81#ifndef CODE_ACCESS
  82static inline RES_TYPE
  83glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
  84                                                  abi_ptr ptr,
  85                                                  uintptr_t retaddr)
  86{
  87    RES_TYPE ret;
  88    set_helper_retaddr(retaddr);
  89    ret = glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(env, ptr);
  90    clear_helper_retaddr();
  91    return ret;
  92}
  93#endif
  94
  95#if DATA_SIZE <= 2
  96static inline int
  97glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr)
  98{
  99#ifdef CODE_ACCESS
 100    int ret;
 101    set_helper_retaddr(1);
 102    ret = glue(glue(lds, SUFFIX), _p)(g2h(ptr));
 103    clear_helper_retaddr();
 104    return ret;
 105#else
 106    trace_guest_mem_before_exec(
 107        env_cpu(env), ptr,
 108        trace_mem_build_info(SHIFT, true, MO_TE, false));
 109    return glue(glue(lds, SUFFIX), _p)(g2h(ptr));
 110#endif
 111}
 112
 113#ifndef CODE_ACCESS
 114static inline int
 115glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
 116                                                  abi_ptr ptr,
 117                                                  uintptr_t retaddr)
 118{
 119    int ret;
 120    set_helper_retaddr(retaddr);
 121    ret = glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(env, ptr);
 122    clear_helper_retaddr();
 123    return ret;
 124}
 125#endif /* CODE_ACCESS */
 126#endif /* DATA_SIZE <= 2 */
 127
 128#ifndef CODE_ACCESS
 129static inline void
 130glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr,
 131                                      RES_TYPE v)
 132{
 133    trace_guest_mem_before_exec(
 134        env_cpu(env), ptr,
 135        trace_mem_build_info(SHIFT, false, MO_TE, true));
 136    glue(glue(st, SUFFIX), _p)(g2h(ptr), v);
 137}
 138
 139static inline void
 140glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
 141                                                  abi_ptr ptr,
 142                                                  RES_TYPE v,
 143                                                  uintptr_t retaddr)
 144{
 145    set_helper_retaddr(retaddr);
 146    glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(env, ptr, v);
 147    clear_helper_retaddr();
 148}
 149#endif
 150
 151#undef RES_TYPE
 152#undef DATA_TYPE
 153#undef DATA_STYPE
 154#undef SUFFIX
 155#undef USUFFIX
 156#undef DATA_SIZE
 157#undef SHIFT
 158