include/exec/cpu_ldst_useronly_template.h

   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
  64 static inline RES_TYPE
  65 glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr)
  66 {
  67     RES_TYPE ret;
  68 #ifdef CODE_ACCESS
  69     set_helper_retaddr(1);
  70     ret = glue(glue(ld, USUFFIX), _p)(g2h(ptr));
  71     clear_helper_retaddr();
  72 #else
  73     MemOp op = MO_TE | SHIFT;
  74     uint16_t meminfo = trace_mem_get_info(op, MMU_USER_IDX, false);
  75     trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo);
  76     ret = glue(glue(ld, USUFFIX), _p)(g2h(ptr));
  77 #endif
  78     return ret;
  79 }
  80
  81 #ifndef CODE_ACCESS
  82 static inline RES_TYPE
  83 glue(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
  96 static inline int
  97 glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr)
  98 {
  99     int ret;
 100 #ifdef CODE_ACCESS
 101     set_helper_retaddr(1);
 102     ret = glue(glue(lds, SUFFIX), _p)(g2h(ptr));
 103     clear_helper_retaddr();
 104 #else
 105     MemOp op = MO_TE | MO_SIGN | SHIFT;
 106     uint16_t meminfo = trace_mem_get_info(op, MMU_USER_IDX, false);
 107     trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo);
 108     ret = glue(glue(lds, SUFFIX), _p)(g2h(ptr));
 109     qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo);
 110 #endif
 111     return ret;
 112 }
 113
 114 #ifndef CODE_ACCESS
 115 static inline int
 116 glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
 117                                                   abi_ptr ptr,
 118                                                   uintptr_t retaddr)
 119 {
 120     int ret;
 121     set_helper_retaddr(retaddr);
 122     ret = glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(env, ptr);
 123     clear_helper_retaddr();
 124     return ret;
 125 }
 126 #endif /* CODE_ACCESS */
 127 #endif /* DATA_SIZE <= 2 */
 128
 129 #ifndef CODE_ACCESS
 130 static inline void
 131 glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr,
 132                                       RES_TYPE v)
 133 {
 134     MemOp op = MO_TE | SHIFT;
 135     uint16_t meminfo = trace_mem_get_info(op, MMU_USER_IDX, true);
 136     trace_guest_mem_before_exec(env_cpu(env), ptr, meminfo);
 137     glue(glue(st, SUFFIX), _p)(g2h(ptr), v);
 138     qemu_plugin_vcpu_mem_cb(env_cpu(env), ptr, meminfo);
 139 }
 140
 141 static inline void
 142 glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
 143                                                   abi_ptr ptr,
 144                                                   RES_TYPE v,
 145                                                   uintptr_t retaddr)
 146 {
 147     set_helper_retaddr(retaddr);
 148     glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(env, ptr, v);
 149     clear_helper_retaddr();
 150 }
 151 #endif
 152
 153 #undef RES_TYPE
 154 #undef DATA_TYPE
 155 #undef DATA_STYPE
 156 #undef SUFFIX
 157 #undef USUFFIX
 158 #undef DATA_SIZE
 159 #undef SHIFT