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   1 /***************************************************************************
   2  *   Copyright (C) 2013-2015,2019-2020 Synopsys, Inc.                      *
   3  *   Frank Dols <frank.dols@synopsys.com>                                  *
   4  *   Mischa Jonker <mischa.jonker@synopsys.com>                            *
   5  *   Anton Kolesov <anton.kolesov@synopsys.com>                            *
   6  *   Evgeniy Didin <didin@synopsys.com>                                    *
   7  *                                                                         *
   8  *   SPDX-License-Identifier: GPL-2.0-or-later                             *
   9  ***************************************************************************/
  10
  11 #ifndef OPENOCD_TARGET_ARC_H
  12 #define OPENOCD_TARGET_ARC_H
  13
  14 #include <helper/time_support.h>
  15 #include <jtag/jtag.h>
  16
  17 #include "algorithm.h"
  18 #include "breakpoints.h"
  19 #include "jtag/interface.h"
  20 #include "register.h"
  21 #include "target.h"
  22 #include "target_request.h"
  23 #include "target_type.h"
  24 #include "helper/bits.h"
  25
  26 #include "arc_jtag.h"
  27 #include "arc_cmd.h"
  28 #include "arc_mem.h"
  29
  30 #define ARC_COMMON_MAGIC        0xB32EB324  /* just a unique number */
  31
  32 #define AUX_DEBUG_REG                   0x5
  33 #define AUX_PC_REG                      0x6
  34 #define AUX_STATUS32_REG                0xA
  35
  36 #define SET_CORE_FORCE_HALT             BIT(1)
  37 #define SET_CORE_HALT_BIT               BIT(0)      /* STATUS32[0] = H field */
  38 #define SET_CORE_ENABLE_INTERRUPTS                      BIT(31)
  39
  40 #define AUX_STATUS32_REG_HALT_BIT       BIT(0)
  41 #define AUX_STATUS32_REG_IE_BIT         BIT(31)    /* STATUS32[31] = IE field */
  42
  43 /* Reserved core registers */
  44 #define CORE_R61_NUM                    (61)
  45 #define CORE_R62_NUM                    (62)
  46
  47 #define CORE_REG_MAX_NUMBER             (63)
  48
  49 /* Limit reg_type/reg_type_field  name to 20 symbols */
  50 #define REG_TYPE_MAX_NAME_LENGTH        20
  51
  52 struct arc_reg_bitfield {
  53         struct reg_data_type_bitfield bitfield;
  54         char name[REG_TYPE_MAX_NAME_LENGTH];
  55 };
  56 /* Register data type */
  57 struct arc_reg_data_type {
  58         struct list_head list;
  59         struct reg_data_type data_type;
  60         struct reg_data_type_flags data_type_flags;
  61         struct reg_data_type_struct data_type_struct;
  62         char data_type_id[REG_TYPE_MAX_NAME_LENGTH];
  63         struct arc_reg_bitfield *bitfields;
  64 };
  65
  66
  67
  68 /* Standard GDB register types */
  69 static const struct reg_data_type standard_gdb_types[] = {
  70         { .type = REG_TYPE_INT,         .id = "int" },
  71         { .type = REG_TYPE_INT8,        .id = "int8" },
  72         { .type = REG_TYPE_INT16,       .id = "int16" },
  73         { .type = REG_TYPE_INT32,       .id = "int32" },
  74         { .type = REG_TYPE_INT64,       .id = "int64" },
  75         { .type = REG_TYPE_INT128,      .id = "int128" },
  76         { .type = REG_TYPE_UINT8,       .id = "uint8" },
  77         { .type = REG_TYPE_UINT16,      .id = "uint16" },
  78         { .type = REG_TYPE_UINT32,      .id = "uint32" },
  79         { .type = REG_TYPE_UINT64,      .id = "uint64" },
  80         { .type = REG_TYPE_UINT128,     .id = "uint128" },
  81         { .type = REG_TYPE_CODE_PTR,    .id = "code_ptr" },
  82         { .type = REG_TYPE_DATA_PTR,    .id = "data_ptr" },
  83         { .type = REG_TYPE_FLOAT,       .id = "float" },
  84         { .type = REG_TYPE_IEEE_SINGLE, .id = "ieee_single" },
  85         { .type = REG_TYPE_IEEE_DOUBLE, .id = "ieee_double" },
  86 };
  87
  88
  89 struct arc_common {
  90         uint32_t common_magic;
  91
  92         struct arc_jtag jtag_info;
  93
  94         struct reg_cache *core_and_aux_cache;
  95         struct reg_cache *bcr_cache;
  96
  97         /* Indicate if cach was built (for deinit function) */
  98         bool core_aux_cache_built;
  99         bool bcr_cache_built;
 100         /* Closely Coupled memory(CCM) regions for performance-critical
 101          * code (optional). */
 102         uint32_t iccm0_start;
 103         uint32_t iccm0_end;
 104         uint32_t iccm1_start;
 105         uint32_t iccm1_end;
 106         uint32_t dccm_start;
 107         uint32_t dccm_end;
 108
 109         int irq_state;
 110
 111         /* Register descriptions */
 112         struct list_head reg_data_types;
 113         struct list_head core_reg_descriptions;
 114         struct list_head aux_reg_descriptions;
 115         struct list_head bcr_reg_descriptions;
 116         unsigned long num_regs;
 117         unsigned long num_core_regs;
 118         unsigned long num_aux_regs;
 119         unsigned long num_bcr_regs;
 120         unsigned long last_general_reg;
 121
 122         /* PC register location in register cache. */
 123         unsigned long pc_index_in_cache;
 124         /* DEBUG register location in register cache. */
 125         unsigned long debug_index_in_cache;
 126 };
 127
 128 /* Borrowed from nds32.h */
 129 #define CHECK_RETVAL(action)                    \
 130         do {                                    \
 131                 int __retval = (action);        \
 132                 if (__retval != ERROR_OK) {     \
 133                         LOG_DEBUG("error while calling \"%s\"", \
 134                                 # action);     \
 135                         return __retval;        \
 136                 }                               \
 137         } while (0)
 138
 139 #define JIM_CHECK_RETVAL(action)                \
 140         do {                                    \
 141                 int __retval = (action);        \
 142                 if (__retval != JIM_OK) {       \
 143                         LOG_DEBUG("error while calling \"%s\"", \
 144                                 # action);     \
 145                         return __retval;        \
 146                 }                               \
 147         } while (0)
 148
 149 static inline struct arc_common *target_to_arc(struct target *target)
 150 {
 151         return target->arch_info;
 152 }
 153
 154
 155 /* ARC Register description */
 156 struct arc_reg_desc {
 157
 158         struct target *target;
 159
 160         /* Register name */
 161         char *name;
 162
 163         /* Actual place of storing reg_value */
 164         uint8_t reg_value[4];
 165
 166         /* Actual place of storing register feature */
 167         struct reg_feature feature;
 168
 169         /* GDB XML feature */
 170         char *gdb_xml_feature;
 171
 172         /* Is this a register in g/G-packet? */
 173         bool is_general;
 174
 175         /* Architectural number: core reg num or AUX reg num */
 176         uint32_t arch_num;
 177
 178         /* Core or AUX register? */
 179         bool is_core;
 180
 181         /* Build configuration register? */
 182         bool is_bcr;
 183
 184         /* Data type */
 185         struct reg_data_type *data_type;
 186
 187         struct list_head list;
 188 };
 189
 190 /* Error codes */
 191 #define ERROR_ARC_REGISTER_NOT_FOUND       (-700)
 192 #define ERROR_ARC_REGISTER_FIELD_NOT_FOUND (-701)
 193 #define ERROR_ARC_REGISTER_IS_NOT_STRUCT   (-702)
 194 #define ERROR_ARC_FIELD_IS_NOT_BITFIELD    (-703)
 195 #define ERROR_ARC_REGTYPE_NOT_FOUND        (-704)
 196
 197 void free_reg_desc(struct arc_reg_desc *r);
 198
 199
 200 void arc_reg_data_type_add(struct target *target,
 201                 struct arc_reg_data_type *data_type);
 202
 203 int arc_reg_add(struct target *target, struct arc_reg_desc *arc_reg,
 204                 const char * const type_name, const size_t type_name_len);
 205
 206 struct reg *arc_reg_get_by_name(struct reg_cache *first,
 207                                         const char *name, bool search_all);
 208
 209 int arc_reg_get_field(struct target *target, const char *reg_name,
 210                 const char *field_name, uint32_t *value_ptr);
 211
 212 #endif /* OPENOCD_TARGET_ARC_H */