target/arm/translate-a64.h

   1 /*
   2  *  AArch64 translation, common definitions.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #ifndef TARGET_ARM_TRANSLATE_A64_H
  19 #define TARGET_ARM_TRANSLATE_A64_H
  20
  21 #define unsupported_encoding(s, insn)                                    \
  22     do {                                                                 \
  23         qemu_log_mask(LOG_UNIMP,                                         \
  24                       "%s:%d: unsupported instruction encoding 0x%08x "  \
  25                       "at pc=%016" PRIx64 "\n",                          \
  26                       __FILE__, __LINE__, insn, s->pc_curr);             \
  27         unallocated_encoding(s);                                         \
  28     } while (0)
  29
  30 TCGv_i64 new_tmp_a64(DisasContext *s);
  31 TCGv_i64 new_tmp_a64_local(DisasContext *s);
  32 TCGv_i64 new_tmp_a64_zero(DisasContext *s);
  33 TCGv_i64 cpu_reg(DisasContext *s, int reg);
  34 TCGv_i64 cpu_reg_sp(DisasContext *s, int reg);
  35 TCGv_i64 read_cpu_reg(DisasContext *s, int reg, int sf);
  36 TCGv_i64 read_cpu_reg_sp(DisasContext *s, int reg, int sf);
  37 void write_fp_dreg(DisasContext *s, int reg, TCGv_i64 v);
  38 bool logic_imm_decode_wmask(uint64_t *result, unsigned int immn,
  39                             unsigned int imms, unsigned int immr);
  40 bool sve_access_check(DisasContext *s);
  41 TCGv_i64 clean_data_tbi(DisasContext *s, TCGv_i64 addr);
  42 TCGv_i64 gen_mte_check1(DisasContext *s, TCGv_i64 addr, bool is_write,
  43                         bool tag_checked, int log2_size);
  44 TCGv_i64 gen_mte_checkN(DisasContext *s, TCGv_i64 addr, bool is_write,
  45                         bool tag_checked, int size);
  46
  47 /* We should have at some point before trying to access an FP register
  48  * done the necessary access check, so assert that
  49  * (a) we did the check and
  50  * (b) we didn't then just plough ahead anyway if it failed.
  51  * Print the instruction pattern in the abort message so we can figure
  52  * out what we need to fix if a user encounters this problem in the wild.
  53  */
  54 static inline void assert_fp_access_checked(DisasContext *s)
  55 {
  56 #ifdef CONFIG_DEBUG_TCG
  57     if (unlikely(!s->fp_access_checked || s->fp_excp_el)) {
  58         fprintf(stderr, "target-arm: FP access check missing for "
  59                 "instruction 0x%08x\n", s->insn);
  60         abort();
  61     }
  62 #endif
  63 }
  64
  65 /* Return the offset into CPUARMState of an element of specified
  66  * size, 'element' places in from the least significant end of
  67  * the FP/vector register Qn.
  68  */
  69 static inline int vec_reg_offset(DisasContext *s, int regno,
  70                                  int element, MemOp size)
  71 {
  72     int element_size = 1 << size;
  73     int offs = element * element_size;
  74 #ifdef HOST_WORDS_BIGENDIAN
  75     /* This is complicated slightly because vfp.zregs[n].d[0] is
  76      * still the lowest and vfp.zregs[n].d[15] the highest of the
  77      * 256 byte vector, even on big endian systems.
  78      *
  79      * Calculate the offset assuming fully little-endian,
  80      * then XOR to account for the order of the 8-byte units.
  81      *
  82      * For 16 byte elements, the two 8 byte halves will not form a
  83      * host int128 if the host is bigendian, since they're in the
  84      * wrong order.  However the only 16 byte operation we have is
  85      * a move, so we can ignore this for the moment.  More complicated
  86      * operations will have to special case loading and storing from
  87      * the zregs array.
  88      */
  89     if (element_size < 8) {
  90         offs ^= 8 - element_size;
  91     }
  92 #endif
  93     offs += offsetof(CPUARMState, vfp.zregs[regno]);
  94     assert_fp_access_checked(s);
  95     return offs;
  96 }
  97
  98 /* Return the offset info CPUARMState of the "whole" vector register Qn.  */
  99 static inline int vec_full_reg_offset(DisasContext *s, int regno)
 100 {
 101     assert_fp_access_checked(s);
 102     return offsetof(CPUARMState, vfp.zregs[regno]);
 103 }
 104
 105 /* Return a newly allocated pointer to the vector register.  */
 106 static inline TCGv_ptr vec_full_reg_ptr(DisasContext *s, int regno)
 107 {
 108     TCGv_ptr ret = tcg_temp_new_ptr();
 109     tcg_gen_addi_ptr(ret, cpu_env, vec_full_reg_offset(s, regno));
 110     return ret;
 111 }
 112
 113 /* Return the byte size of the "whole" vector register, VL / 8.  */
 114 static inline int vec_full_reg_size(DisasContext *s)
 115 {
 116     return s->sve_len;
 117 }
 118
 119 bool disas_sve(DisasContext *, uint32_t);
 120
 121 void gen_gvec_rax1(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs,
 122                    uint32_t rm_ofs, uint32_t opr_sz, uint32_t max_sz);
 123 void gen_gvec_xar(unsigned vece, uint32_t rd_ofs, uint32_t rn_ofs,
 124                   uint32_t rm_ofs, int64_t shift,
 125                   uint32_t opr_sz, uint32_t max_sz);
 126
 127 #endif /* TARGET_ARM_TRANSLATE_A64_H */