src/target/armv7a.h

   1 /***************************************************************************
   2  *    Copyright (C) 2009 by David Brownell                                 *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program 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         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19 #ifndef ARMV7A_H
  20 #define ARMV7A_H
  21
  22 #include "arm_adi_v5.h"
  23 #include "armv4_5.h"
  24 #include "armv4_5_mmu.h"
  25 #include "armv4_5_cache.h"
  26
  27 typedef enum armv7a_mode
  28 {
  29         ARMV7A_MODE_USR = 16,
  30         ARMV7A_MODE_FIQ = 17,
  31         ARMV7A_MODE_IRQ = 18,
  32         ARMV7A_MODE_SVC = 19,
  33         ARMV7A_MODE_ABT = 23,
  34         ARMV7A_MODE_UND = 27,
  35         ARMV7A_MODE_SYS = 31,
  36         ARMV7A_MODE_MON = 22,
  37         ARMV7A_MODE_ANY = -1
  38 } armv7a_t;
  39
  40 typedef enum armv7a_state
  41 {
  42         ARMV7A_STATE_ARM,
  43         ARMV7A_STATE_THUMB,
  44         ARMV7A_STATE_JAZELLE,
  45         ARMV7A_STATE_THUMBEE,
  46 } armv7a_state_t;
  47
  48 enum
  49 {
  50         ARM_PC  = 15,
  51         ARM_CPSR = 16
  52 }
  53 ;
  54 /* offsets into armv4_5 core register cache */
  55 enum
  56 {
  57         ARMV7A_CPSR = 31,
  58         ARMV7A_SPSR_FIQ = 32,
  59         ARMV7A_SPSR_IRQ = 33,
  60         ARMV7A_SPSR_SVC = 34,
  61         ARMV7A_SPSR_ABT = 35,
  62         ARMV7A_SPSR_UND = 36
  63 };
  64
  65 #define ARMV7_COMMON_MAGIC 0x0A450999
  66
  67 /* VA to PA translation operations opc2 values*/
  68 #define V2PCWPR  0
  69 #define V2PCWPW  1
  70 #define V2PCWUR  2
  71 #define V2PCWUW  3
  72 #define V2POWPR  4
  73 #define V2POWPW  5
  74 #define V2POWUR  6
  75 #define V2POWUW  7
  76
  77 struct armv7a_common
  78 {
  79         int common_magic;
  80         struct reg_cache *core_cache;
  81         enum armv7a_mode core_mode;
  82         enum armv7a_state core_state;
  83
  84         /* arm adp debug port */
  85         struct swjdp_common swjdp_info;
  86
  87         /* Core Debug Unit */
  88         uint32_t debug_base;
  89         uint8_t debug_ap;
  90         uint8_t memory_ap;
  91
  92         /* Cache and Memory Management Unit */
  93         struct armv4_5_mmu_common armv4_5_mmu;
  94         struct arm armv4_5_common;
  95
  96         int (*read_cp15)(struct target *target,
  97                         uint32_t op1, uint32_t op2,
  98                         uint32_t CRn, uint32_t CRm, uint32_t *value);
  99         int (*write_cp15)(struct target *target,
 100                         uint32_t op1, uint32_t op2,
 101                         uint32_t CRn, uint32_t CRm, uint32_t value);
 102
 103         int (*examine_debug_reason)(struct target *target);
 104         void (*post_debug_entry)(struct target *target);
 105
 106         void (*pre_restore_context)(struct target *target);
 107         void (*post_restore_context)(struct target *target);
 108
 109 };
 110
 111 static inline struct armv7a_common *
 112 target_to_armv7a(struct target *target)
 113 {
 114         return container_of(target->arch_info, struct armv7a_common,
 115                         armv4_5_common);
 116 }
 117
 118 struct armv7a_algorithm
 119 {
 120         int common_magic;
 121
 122         enum armv7a_mode core_mode;
 123         enum armv7a_state core_state;
 124 };
 125
 126 struct armv7a_core_reg
 127 {
 128         int num;
 129         enum armv7a_mode mode;
 130         struct target *target;
 131         struct armv7a_common *armv7a_common;
 132 };
 133
 134 int armv7a_arch_state(struct target *target);
 135 struct reg_cache *armv7a_build_reg_cache(struct target *target,
 136                 struct armv7a_common *armv7a_common);
 137 int armv7a_register_commands(struct command_context *cmd_ctx);
 138 int armv7a_init_arch_info(struct target *target, struct armv7a_common *armv7a);
 139
 140 #endif /* ARMV4_5_H */