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#if !defined(CODE_ACCESS)
  68    trace_guest_mem_before_exec(
  69        ENV_GET_CPU(env), ptr,
  70        trace_mem_build_info(SHIFT, false, MO_TE, false));
  71#endif
  72    return glue(glue(ld, USUFFIX), _p)(g2h(ptr));
  73}
  74
  75static inline RES_TYPE
  76glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
  77                                                  abi_ptr ptr,
  78                                                  uintptr_t retaddr)
  79{
  80    RES_TYPE ret;
  81    helper_retaddr = retaddr;
  82    ret = glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(env, ptr);
  83    helper_retaddr = 0;
  84    return ret;
  85}
  86
  87#if DATA_SIZE <= 2
  88static inline int
  89glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr)
  90{
  91#if !defined(CODE_ACCESS)
  92    trace_guest_mem_before_exec(
  93        ENV_GET_CPU(env), ptr,
  94        trace_mem_build_info(SHIFT, true, MO_TE, false));
  95#endif
  96    return glue(glue(lds, SUFFIX), _p)(g2h(ptr));
  97}
  98
  99static inline int
 100glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
 101                                                  abi_ptr ptr,
 102                                                  uintptr_t retaddr)
 103{
 104    int ret;
 105    helper_retaddr = retaddr;
 106    ret = glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(env, ptr);
 107    helper_retaddr = 0;
 108    return ret;
 109}
 110#endif
 111
 112#ifndef CODE_ACCESS
 113static inline void
 114glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr,
 115                                      RES_TYPE v)
 116{
 117#if !defined(CODE_ACCESS)
 118    trace_guest_mem_before_exec(
 119        ENV_GET_CPU(env), ptr,
 120        trace_mem_build_info(SHIFT, false, MO_TE, true));
 121#endif
 122    glue(glue(st, SUFFIX), _p)(g2h(ptr), v);
 123}
 124
 125static inline void
 126glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
 127                                                  abi_ptr ptr,
 128                                                  RES_TYPE v,
 129                                                  uintptr_t retaddr)
 130{
 131    helper_retaddr = retaddr;
 132    glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(env, ptr, v);
 133    helper_retaddr = 0;
 134}
 135#endif
 136
 137#undef RES_TYPE
 138#undef DATA_TYPE
 139#undef DATA_STYPE
 140#undef SUFFIX
 141#undef USUFFIX
 142#undef DATA_SIZE
 143#undef SHIFT
 144