1 /***************************************************************************
2 * Copyright (C) 2008 by Spencer Oliver *
3 * spen@spen-soft.co.uk *
5 * Copyright (C) 2008 by David T.L. Wong *
7 * This program is free software; you can redistribute it and/or modify *
8 * it under the terms of the GNU General Public License as published by *
9 * the Free Software Foundation; either version 2 of the License, or *
10 * (at your option) any later version. *
12 * This program is distributed in the hope that it will be useful, *
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15 * GNU General Public License for more details. *
17 * You should have received a copy of the GNU General Public License *
18 * along with this program; if not, write to the *
19 * Free Software Foundation, Inc., *
20 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
21 ***************************************************************************/
27 #include "mips32_pracc.h"
29 #define MIPS32_COMMON_MAGIC 0xB320B320
31 /* offsets into mips32 core register cache */
40 MIPS32_ISA_MIPS32 = 0,
41 MIPS32_ISA_MIPS16E = 1,
44 struct mips32_comparator
53 uint32_t common_magic;
55 struct reg_cache *core_cache;
56 struct mips_ejtag ejtag_info;
57 uint32_t core_regs[MIPS32NUMCOREREGS];
58 enum mips32_isa_mode isa_mode;
60 /* working area for fastdata access */
61 struct working_area *fast_data_area;
66 int num_inst_bpoints_avail;
67 int num_data_bpoints_avail;
68 struct mips32_comparator *inst_break_list;
69 struct mips32_comparator *data_break_list;
71 /* register cache to processor synchronization */
72 int (*read_core_reg)(struct target *target, int num);
73 int (*write_core_reg)(struct target *target, int num);
76 static inline struct mips32_common *
77 target_to_mips32(struct target *target)
79 return target->arch_info;
82 struct mips32_core_reg
85 struct target *target;
86 struct mips32_common *mips32_common;
89 struct mips32_algorithm
92 enum mips32_isa_mode isa_mode;
95 #define MIPS32_OP_BEQ 0x04
96 #define MIPS32_OP_BNE 0x05
97 #define MIPS32_OP_ADDI 0x08
98 #define MIPS32_OP_AND 0x24
99 #define MIPS32_OP_COP0 0x10
100 #define MIPS32_OP_JR 0x08
101 #define MIPS32_OP_LUI 0x0F
102 #define MIPS32_OP_LW 0x23
103 #define MIPS32_OP_LBU 0x24
104 #define MIPS32_OP_LHU 0x25
105 #define MIPS32_OP_MFHI 0x10
106 #define MIPS32_OP_MTHI 0x11
107 #define MIPS32_OP_MFLO 0x12
108 #define MIPS32_OP_MTLO 0x13
109 #define MIPS32_OP_SB 0x28
110 #define MIPS32_OP_SH 0x29
111 #define MIPS32_OP_SW 0x2B
112 #define MIPS32_OP_ORI 0x0D
114 #define MIPS32_COP0_MF 0x00
115 #define MIPS32_COP0_MT 0x04
117 #define MIPS32_R_INST(opcode, rs, rt, rd, shamt, funct) (((opcode) << 26) |((rs) << 21) | ((rt) << 16) | ((rd) << 11)| ((shamt) << 6) | (funct))
118 #define MIPS32_I_INST(opcode, rs, rt, immd) (((opcode) << 26) |((rs) << 21) | ((rt) << 16) | (immd))
119 #define MIPS32_J_INST(opcode, addr) (((opcode) << 26) |(addr))
122 #define MIPS32_ADDI(tar, src, val) MIPS32_I_INST(MIPS32_OP_ADDI, src, tar, val)
123 #define MIPS32_AND(reg, off, val) MIPS32_R_INST(0, off, val, reg, 0, MIPS32_OP_AND)
124 #define MIPS32_B(off) MIPS32_BEQ(0, 0, off)
125 #define MIPS32_BEQ(src,tar,off) MIPS32_I_INST(MIPS32_OP_BEQ, src, tar, off)
126 #define MIPS32_BNE(src,tar,off) MIPS32_I_INST(MIPS32_OP_BNE, src, tar, off)
127 #define MIPS32_JR(reg) MIPS32_R_INST(0, reg, 0, 0, 0, MIPS32_OP_JR)
128 #define MIPS32_MFC0(gpr, cpr, sel) MIPS32_R_INST(MIPS32_OP_COP0, MIPS32_COP0_MF, gpr, cpr, 0, sel)
129 #define MIPS32_MTC0(gpr,cpr, sel) MIPS32_R_INST(MIPS32_OP_COP0, MIPS32_COP0_MT, gpr, cpr, 0, sel)
130 #define MIPS32_LBU(reg, off, base) MIPS32_I_INST(MIPS32_OP_LBU, base, reg, off)
131 #define MIPS32_LHU(reg, off, base) MIPS32_I_INST(MIPS32_OP_LHU, base, reg, off)
132 #define MIPS32_LUI(reg, val) MIPS32_I_INST(MIPS32_OP_LUI, 0, reg, val)
133 #define MIPS32_LW(reg, off, base) MIPS32_I_INST(MIPS32_OP_LW, base, reg, off)
134 #define MIPS32_MFLO(reg) MIPS32_R_INST(0, 0, 0, reg, 0, MIPS32_OP_MFLO)
135 #define MIPS32_MFHI(reg) MIPS32_R_INST(0, 0, 0, reg, 0, MIPS32_OP_MFHI)
136 #define MIPS32_MTLO(reg) MIPS32_R_INST(0, reg, 0, 0, 0, MIPS32_OP_MTLO)
137 #define MIPS32_MTHI(reg) MIPS32_R_INST(0, reg, 0, 0, 0, MIPS32_OP_MTHI)
138 #define MIPS32_ORI(src, tar, val) MIPS32_I_INST(MIPS32_OP_ORI, src, tar, val)
139 #define MIPS32_SB(reg, off, base) MIPS32_I_INST(MIPS32_OP_SB, base, reg, off)
140 #define MIPS32_SH(reg, off, base) MIPS32_I_INST(MIPS32_OP_SH, base, reg, off)
141 #define MIPS32_SW(reg, off, base) MIPS32_I_INST(MIPS32_OP_SW, base, reg, off)
143 /* ejtag specific instructions */
144 #define MIPS32_DRET 0x4200001F
145 #define MIPS32_SDBBP 0x7000003F
146 #define MIPS16_SDBBP 0xE801
148 int mips32_arch_state(struct target *target);
150 int mips32_init_arch_info(struct target *target,
151 struct mips32_common *mips32, struct jtag_tap *tap);
153 int mips32_restore_context(struct target *target);
154 int mips32_save_context(struct target *target);
156 struct reg_cache *mips32_build_reg_cache(struct target *target);
158 int mips32_run_algorithm(struct target *target,
159 int num_mem_params, struct mem_param *mem_params,
160 int num_reg_params, struct reg_param *reg_params,
161 uint32_t entry_point, uint32_t exit_point,
162 int timeout_ms, void *arch_info);
164 int mips32_configure_break_unit(struct target *target);
166 int mips32_enable_interrupts(struct target *target, int enable);
168 int mips32_examine(struct target *target);
170 int mips32_register_commands(struct command_context *cmd_ctx);
172 int mips32_get_gdb_reg_list(struct target *target,
173 struct reg **reg_list[], int *reg_list_size);
174 int mips32_checksum_memory(struct target *target, uint32_t address,
175 uint32_t count, uint32_t* checksum);
176 int mips32_blank_check_memory(struct target *target,
177 uint32_t address, uint32_t count, uint32_t* blank);