target/arm/tcg/translate-a32.h

   1 /*
   2  *  AArch32 translation, common definitions.
   3  *
   4  * Copyright (c) 2021 Linaro, Ltd.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef TARGET_ARM_TRANSLATE_A32_H
  21 #define TARGET_ARM_TRANSLATE_A32_H
  22
  23 /* Prototypes for autogenerated disassembler functions */
  24 bool disas_m_nocp(DisasContext *dc, uint32_t insn);
  25 bool disas_mve(DisasContext *dc, uint32_t insn);
  26 bool disas_vfp(DisasContext *s, uint32_t insn);
  27 bool disas_vfp_uncond(DisasContext *s, uint32_t insn);
  28 bool disas_neon_dp(DisasContext *s, uint32_t insn);
  29 bool disas_neon_ls(DisasContext *s, uint32_t insn);
  30 bool disas_neon_shared(DisasContext *s, uint32_t insn);
  31
  32 void load_reg_var(DisasContext *s, TCGv_i32 var, int reg);
  33 void arm_gen_condlabel(DisasContext *s);
  34 bool vfp_access_check(DisasContext *s);
  35 bool vfp_access_check_m(DisasContext *s, bool skip_context_update);
  36 void read_neon_element32(TCGv_i32 dest, int reg, int ele, MemOp memop);
  37 void read_neon_element64(TCGv_i64 dest, int reg, int ele, MemOp memop);
  38 void write_neon_element32(TCGv_i32 src, int reg, int ele, MemOp memop);
  39 void write_neon_element64(TCGv_i64 src, int reg, int ele, MemOp memop);
  40 TCGv_i32 add_reg_for_lit(DisasContext *s, int reg, int ofs);
  41 void gen_set_cpsr(TCGv_i32 var, uint32_t mask);
  42 void gen_set_condexec(DisasContext *s);
  43 void gen_update_pc(DisasContext *s, target_long diff);
  44 void gen_lookup_tb(DisasContext *s);
  45 long vfp_reg_offset(bool dp, unsigned reg);
  46 long neon_full_reg_offset(unsigned reg);
  47 long neon_element_offset(int reg, int element, MemOp memop);
  48 void gen_rev16(TCGv_i32 dest, TCGv_i32 var);
  49 void clear_eci_state(DisasContext *s);
  50 bool mve_eci_check(DisasContext *s);
  51 void mve_update_eci(DisasContext *s);
  52 void mve_update_and_store_eci(DisasContext *s);
  53 bool mve_skip_vmov(DisasContext *s, int vn, int index, int size);
  54
  55 static inline TCGv_i32 load_cpu_offset(int offset)
  56 {
  57     TCGv_i32 tmp = tcg_temp_new_i32();
  58     tcg_gen_ld_i32(tmp, tcg_env, offset);
  59     return tmp;
  60 }
  61
  62 /* Load from a 32-bit field to a TCGv_i32 */
  63 #define load_cpu_field(name)                                            \
  64     ({                                                                  \
  65         QEMU_BUILD_BUG_ON(sizeof_field(CPUARMState, name) != 4);        \
  66         load_cpu_offset(offsetof(CPUARMState, name));                   \
  67     })
  68
  69 /* Load from the low half of a 64-bit field to a TCGv_i32 */
  70 #define load_cpu_field_low32(name)                                      \
  71     ({                                                                  \
  72         QEMU_BUILD_BUG_ON(sizeof_field(CPUARMState, name) != 8);        \
  73         load_cpu_offset(offsetoflow32(CPUARMState, name));              \
  74     })
  75
  76 void store_cpu_offset(TCGv_i32 var, int offset, int size);
  77
  78 #define store_cpu_field(val, name)                                      \
  79     ({                                                                  \
  80         QEMU_BUILD_BUG_ON(sizeof_field(CPUARMState, name) != 4          \
  81                           && sizeof_field(CPUARMState, name) != 1);     \
  82         store_cpu_offset(val, offsetof(CPUARMState, name),              \
  83                          sizeof_field(CPUARMState, name));              \
  84     })
  85
  86 /* Store to the low half of a 64-bit field from a TCGv_i32 */
  87 #define store_cpu_field_low32(val, name)                                \
  88     ({                                                                  \
  89         QEMU_BUILD_BUG_ON(sizeof_field(CPUARMState, name) != 8);        \
  90         store_cpu_offset(val, offsetoflow32(CPUARMState, name), 4);     \
  91     })
  92
  93 #define store_cpu_field_constant(val, name) \
  94     store_cpu_field(tcg_constant_i32(val), name)
  95
  96 /* Create a new temporary and set it to the value of a CPU register.  */
  97 static inline TCGv_i32 load_reg(DisasContext *s, int reg)
  98 {
  99     TCGv_i32 tmp = tcg_temp_new_i32();
 100     load_reg_var(s, tmp, reg);
 101     return tmp;
 102 }
 103
 104 void store_reg(DisasContext *s, int reg, TCGv_i32 var);
 105
 106 void gen_aa32_ld_internal_i32(DisasContext *s, TCGv_i32 val,
 107                               TCGv_i32 a32, int index, MemOp opc);
 108 void gen_aa32_st_internal_i32(DisasContext *s, TCGv_i32 val,
 109                               TCGv_i32 a32, int index, MemOp opc);
 110 void gen_aa32_ld_internal_i64(DisasContext *s, TCGv_i64 val,
 111                               TCGv_i32 a32, int index, MemOp opc);
 112 void gen_aa32_st_internal_i64(DisasContext *s, TCGv_i64 val,
 113                               TCGv_i32 a32, int index, MemOp opc);
 114 void gen_aa32_ld_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32,
 115                      int index, MemOp opc);
 116 void gen_aa32_st_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32,
 117                      int index, MemOp opc);
 118 void gen_aa32_ld_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32,
 119                      int index, MemOp opc);
 120 void gen_aa32_st_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32,
 121                      int index, MemOp opc);
 122
 123 #define DO_GEN_LD(SUFF, OPC)                                            \
 124     static inline void gen_aa32_ld##SUFF(DisasContext *s, TCGv_i32 val, \
 125                                          TCGv_i32 a32, int index)       \
 126     {                                                                   \
 127         gen_aa32_ld_i32(s, val, a32, index, OPC);                       \
 128     }
 129
 130 #define DO_GEN_ST(SUFF, OPC)                                            \
 131     static inline void gen_aa32_st##SUFF(DisasContext *s, TCGv_i32 val, \
 132                                          TCGv_i32 a32, int index)       \
 133     {                                                                   \
 134         gen_aa32_st_i32(s, val, a32, index, OPC);                       \
 135     }
 136
 137 static inline void gen_aa32_ld64(DisasContext *s, TCGv_i64 val,
 138                                  TCGv_i32 a32, int index)
 139 {
 140     gen_aa32_ld_i64(s, val, a32, index, MO_UQ);
 141 }
 142
 143 static inline void gen_aa32_st64(DisasContext *s, TCGv_i64 val,
 144                                  TCGv_i32 a32, int index)
 145 {
 146     gen_aa32_st_i64(s, val, a32, index, MO_UQ);
 147 }
 148
 149 DO_GEN_LD(8u, MO_UB)
 150 DO_GEN_LD(16u, MO_UW)
 151 DO_GEN_LD(32u, MO_UL)
 152 DO_GEN_ST(8, MO_UB)
 153 DO_GEN_ST(16, MO_UW)
 154 DO_GEN_ST(32, MO_UL)
 155
 156 #undef DO_GEN_LD
 157 #undef DO_GEN_ST
 158
 159 #if defined(CONFIG_USER_ONLY)
 160 #define IS_USER(s) 1
 161 #else
 162 #define IS_USER(s) (s->user)
 163 #endif
 164
 165 /* Set NZCV flags from the high 4 bits of var.  */
 166 #define gen_set_nzcv(var) gen_set_cpsr(var, CPSR_NZCV)
 167
 168 /* Swap low and high halfwords.  */
 169 static inline void gen_swap_half(TCGv_i32 dest, TCGv_i32 var)
 170 {
 171     tcg_gen_rotri_i32(dest, var, 16);
 172 }
 173
 174 #endif