1 /***************************************************************************
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2 * Copyright (C) 2008 digenius technology GmbH. *
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4 * This program is free software; you can redistribute it and/or modify *
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5 * it under the terms of the GNU General Public License as published by *
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6 * the Free Software Foundation; either version 2 of the License, or *
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7 * (at your option) any later version. *
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9 * This program is distributed in the hope that it will be useful, *
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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12 * GNU General Public License for more details. *
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14 * You should have received a copy of the GNU General Public License *
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15 * along with this program; if not, write to the *
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16 * Free Software Foundation, Inc., *
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17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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18 ***************************************************************************/
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20 #ifdef HAVE_CONFIG_H
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32 #define _DEBUG_INSTRUCTION_EXECUTION_
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37 #define FNC_INFO DEBUG("-")
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43 #define FNC_INFO_NOTIMPLEMENTED do { DEBUG("NOT IMPLEMENTED"); /*exit(-1);*/ } while (0)
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45 #define FNC_INFO_NOTIMPLEMENTED
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48 static void arm11_on_enter_debug_state(arm11_common_t * arm11);
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51 #define ARM11_HANDLER(x) \
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54 target_type_t arm11_target =
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58 ARM11_HANDLER(poll),
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59 ARM11_HANDLER(arch_state),
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61 ARM11_HANDLER(target_request_data),
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63 ARM11_HANDLER(halt),
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64 ARM11_HANDLER(resume),
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65 ARM11_HANDLER(step),
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67 ARM11_HANDLER(assert_reset),
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68 ARM11_HANDLER(deassert_reset),
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69 ARM11_HANDLER(soft_reset_halt),
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70 ARM11_HANDLER(prepare_reset_halt),
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72 ARM11_HANDLER(get_gdb_reg_list),
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74 ARM11_HANDLER(read_memory),
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75 ARM11_HANDLER(write_memory),
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77 ARM11_HANDLER(bulk_write_memory),
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79 ARM11_HANDLER(checksum_memory),
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81 ARM11_HANDLER(add_breakpoint),
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82 ARM11_HANDLER(remove_breakpoint),
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83 ARM11_HANDLER(add_watchpoint),
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84 ARM11_HANDLER(remove_watchpoint),
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86 ARM11_HANDLER(run_algorithm),
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88 ARM11_HANDLER(register_commands),
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89 ARM11_HANDLER(target_command),
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90 ARM11_HANDLER(init_target),
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91 ARM11_HANDLER(quit),
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94 int arm11_regs_arch_type = -1;
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99 ARM11_REGISTER_CORE,
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100 ARM11_REGISTER_CPSR,
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103 ARM11_REGISTER_FPS,
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105 ARM11_REGISTER_FIQ,
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106 ARM11_REGISTER_SVC,
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107 ARM11_REGISTER_ABT,
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108 ARM11_REGISTER_IRQ,
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109 ARM11_REGISTER_UND,
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110 ARM11_REGISTER_MON,
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112 ARM11_REGISTER_SPSR_FIQ,
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113 ARM11_REGISTER_SPSR_SVC,
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114 ARM11_REGISTER_SPSR_ABT,
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115 ARM11_REGISTER_SPSR_IRQ,
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116 ARM11_REGISTER_SPSR_UND,
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117 ARM11_REGISTER_SPSR_MON,
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120 ARM11_REGISTER_DSCR,
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121 ARM11_REGISTER_WDTR,
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122 ARM11_REGISTER_RDTR,
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126 typedef struct arm11_reg_defs_s
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131 enum arm11_regtype type;
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132 } arm11_reg_defs_t;
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134 /* update arm11_regcache_ids when changing this */
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135 static const arm11_reg_defs_t arm11_reg_defs[] =
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137 {"r0", 0, 0, ARM11_REGISTER_CORE},
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138 {"r1", 1, 1, ARM11_REGISTER_CORE},
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139 {"r2", 2, 2, ARM11_REGISTER_CORE},
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140 {"r3", 3, 3, ARM11_REGISTER_CORE},
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141 {"r4", 4, 4, ARM11_REGISTER_CORE},
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142 {"r5", 5, 5, ARM11_REGISTER_CORE},
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143 {"r6", 6, 6, ARM11_REGISTER_CORE},
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144 {"r7", 7, 7, ARM11_REGISTER_CORE},
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145 {"r8", 8, 8, ARM11_REGISTER_CORE},
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146 {"r9", 9, 9, ARM11_REGISTER_CORE},
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147 {"r10", 10, 10, ARM11_REGISTER_CORE},
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148 {"r11", 11, 11, ARM11_REGISTER_CORE},
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149 {"r12", 12, 12, ARM11_REGISTER_CORE},
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150 {"sp", 13, 13, ARM11_REGISTER_CORE},
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151 {"lr", 14, 14, ARM11_REGISTER_CORE},
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152 {"pc", 15, 15, ARM11_REGISTER_CORE},
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154 #if ARM11_REGCACHE_FREGS
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155 {"f0", 0, 16, ARM11_REGISTER_FX},
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156 {"f1", 1, 17, ARM11_REGISTER_FX},
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157 {"f2", 2, 18, ARM11_REGISTER_FX},
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158 {"f3", 3, 19, ARM11_REGISTER_FX},
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159 {"f4", 4, 20, ARM11_REGISTER_FX},
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160 {"f5", 5, 21, ARM11_REGISTER_FX},
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161 {"f6", 6, 22, ARM11_REGISTER_FX},
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162 {"f7", 7, 23, ARM11_REGISTER_FX},
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163 {"fps", 0, 24, ARM11_REGISTER_FPS},
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166 {"cpsr", 0, 25, ARM11_REGISTER_CPSR},
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168 #if ARM11_REGCACHE_MODEREGS
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169 {"r8_fiq", 8, -1, ARM11_REGISTER_FIQ},
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170 {"r9_fiq", 9, -1, ARM11_REGISTER_FIQ},
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171 {"r10_fiq", 10, -1, ARM11_REGISTER_FIQ},
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172 {"r11_fiq", 11, -1, ARM11_REGISTER_FIQ},
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173 {"r12_fiq", 12, -1, ARM11_REGISTER_FIQ},
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174 {"r13_fiq", 13, -1, ARM11_REGISTER_FIQ},
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175 {"r14_fiq", 14, -1, ARM11_REGISTER_FIQ},
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176 {"spsr_fiq", 0, -1, ARM11_REGISTER_SPSR_FIQ},
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178 {"r13_svc", 13, -1, ARM11_REGISTER_SVC},
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179 {"r14_svc", 14, -1, ARM11_REGISTER_SVC},
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180 {"spsr_svc", 0, -1, ARM11_REGISTER_SPSR_SVC},
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182 {"r13_abt", 13, -1, ARM11_REGISTER_ABT},
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183 {"r14_abt", 14, -1, ARM11_REGISTER_ABT},
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184 {"spsr_abt", 0, -1, ARM11_REGISTER_SPSR_ABT},
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186 {"r13_irq", 13, -1, ARM11_REGISTER_IRQ},
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187 {"r14_irq", 14, -1, ARM11_REGISTER_IRQ},
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188 {"spsr_irq", 0, -1, ARM11_REGISTER_SPSR_IRQ},
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190 {"r13_und", 13, -1, ARM11_REGISTER_UND},
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191 {"r14_und", 14, -1, ARM11_REGISTER_UND},
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192 {"spsr_und", 0, -1, ARM11_REGISTER_SPSR_UND},
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195 {"r13_mon", 13, -1, ARM11_REGISTER_MON},
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196 {"r14_mon", 14, -1, ARM11_REGISTER_MON},
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197 {"spsr_mon", 0, -1, ARM11_REGISTER_SPSR_MON},
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200 /* Debug Registers */
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201 {"dscr", 0, -1, ARM11_REGISTER_DSCR},
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202 {"wdtr", 0, -1, ARM11_REGISTER_WDTR},
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203 {"rdtr", 0, -1, ARM11_REGISTER_RDTR},
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206 enum arm11_regcache_ids
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209 ARM11_RC_RX = ARM11_RC_R0,
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224 ARM11_RC_SP = ARM11_RC_R13,
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226 ARM11_RC_LR = ARM11_RC_R14,
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228 ARM11_RC_PC = ARM11_RC_R15,
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230 #if ARM11_REGCACHE_FREGS
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232 ARM11_RC_FX = ARM11_RC_F0,
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245 #if ARM11_REGCACHE_MODEREGS
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284 #define ARM11_GDB_REGISTER_COUNT 26
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286 u8 arm11_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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288 reg_t arm11_gdb_dummy_fp_reg =
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290 "GDB dummy floating-point register", arm11_gdb_dummy_fp_value, 0, 1, 96, NULL, 0, NULL, 0
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293 u8 arm11_gdb_dummy_fps_value[] = {0, 0, 0, 0};
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295 reg_t arm11_gdb_dummy_fps_reg =
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297 "GDB dummy floating-point status register", arm11_gdb_dummy_fps_value, 0, 1, 32, NULL, 0, NULL, 0
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302 /** Check and if necessary take control of the system
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304 * \param arm11 Target state variable.
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305 * \param dscr If the current DSCR content is
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306 * available a pointer to a word holding the
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307 * DSCR can be passed. Otherwise use NULL.
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309 void arm11_check_init(arm11_common_t * arm11, u32 * dscr)
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313 u32 dscr_local_tmp_copy;
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317 dscr = &dscr_local_tmp_copy;
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318 *dscr = arm11_read_DSCR(arm11);
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321 if (!(*dscr & ARM11_DSCR_MODE_SELECT))
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323 DEBUG("Bringing target into debug mode");
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325 *dscr |= ARM11_DSCR_MODE_SELECT; /* Halt debug-mode */
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326 arm11_write_DSCR(arm11, *dscr);
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328 /* add further reset initialization here */
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330 if (*dscr & ARM11_DSCR_CORE_HALTED)
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332 arm11->target->state = TARGET_HALTED;
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333 arm11->target->debug_reason = arm11_get_DSCR_debug_reason(*dscr);
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337 arm11->target->state = TARGET_RUNNING;
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338 arm11->target->debug_reason = DBG_REASON_NOTHALTED;
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341 arm11_sc7_clear_bw(arm11);
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348 (arm11->reg_values[ARM11_RC_##x])
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350 /** Save processor state.
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352 * This is called when the HALT instruction has succeeded
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353 * or on other occasions that stop the processor.
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356 static void arm11_on_enter_debug_state(arm11_common_t * arm11)
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361 for(i = 0; i < asizeof(arm11->reg_values); i++)
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363 arm11->reg_list[i].valid = 1;
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364 arm11->reg_list[i].dirty = 0;
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369 R(DSCR) = arm11_read_DSCR(arm11);
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373 if (R(DSCR) & ARM11_DSCR_WDTR_FULL)
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375 arm11_add_debug_SCAN_N(arm11, 0x05, -1);
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377 arm11_add_IR(arm11, ARM11_INTEST, -1);
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379 scan_field_t chain5_fields[3];
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381 arm11_setup_field(arm11, 32, NULL, &R(WDTR), chain5_fields + 0);
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382 arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 1);
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383 arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 2);
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385 jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD);
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389 arm11->reg_list[ARM11_RC_WDTR].valid = 0;
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393 /* DSCR: set ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE */
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394 /* ARM1176 spec says this is needed only for wDTR/rDTR's "ITR mode", but not to issue ITRs
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395 ARM1136 seems to require this to issue ITR's as well */
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397 u32 new_dscr = R(DSCR) | ARM11_DSCR_EXECUTE_ARM_INSTRUCTION_ENABLE;
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399 /* this executes JTAG queue: */
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401 arm11_write_DSCR(arm11, new_dscr);
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403 // jtag_execute_queue();
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407 // DEBUG("SAVE DSCR %08x", R(DSCR));
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409 // if (R(DSCR) & ARM11_DSCR_WDTR_FULL)
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410 // DEBUG("SAVE wDTR %08x", R(WDTR));
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414 Before executing any instruction in debug state you have to drain the write buffer.
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415 This ensures that no imprecise Data Aborts can return at a later point:*/
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417 /** \todo TODO: Test drain write buffer. */
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422 /* MRC p14,0,R0,c5,c10,0 */
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423 // arm11_run_instr_no_data1(arm11, /*0xee150e1a*/0xe320f000);
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425 /* mcr 15, 0, r0, cr7, cr10, {4} */
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426 arm11_run_instr_no_data1(arm11, 0xee070f9a);
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428 u32 dscr = arm11_read_DSCR(arm11);
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430 DEBUG("DRAIN, DSCR %08x", dscr);
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432 if (dscr & ARM11_DSCR_STICKY_IMPRECISE_DATA_ABORT)
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434 arm11_run_instr_no_data1(arm11, 0xe320f000);
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436 dscr = arm11_read_DSCR(arm11);
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438 DEBUG("DRAIN, DSCR %08x (DONE)", dscr);
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446 arm11_run_instr_data_prepare(arm11);
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448 /* save r0 - r14 */
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451 /** \todo TODO: handle other mode registers */
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454 for (i = 0; i < 15; i++)
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456 /* MCR p14,0,R?,c0,c5,0 */
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457 arm11_run_instr_data_from_core(arm11, 0xEE000E15 | (i << 12), &R(RX + i), 1);
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463 /* check rDTRfull in DSCR */
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465 if (R(DSCR) & ARM11_DSCR_RDTR_FULL)
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467 /* MRC p14,0,R0,c0,c5,0 (move rDTR -> r0 (-> wDTR -> local var)) */
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468 arm11_run_instr_data_from_core_via_r0(arm11, 0xEE100E15, &R(RDTR));
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472 arm11->reg_list[ARM11_RC_RDTR].valid = 0;
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477 /* MRS r0,CPSR (move CPSR -> r0 (-> wDTR -> local var)) */
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478 arm11_run_instr_data_from_core_via_r0(arm11, 0xE10F0000, &R(CPSR));
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482 /* MOV R0,PC (move PC -> r0 (-> wDTR -> local var)) */
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483 arm11_run_instr_data_from_core_via_r0(arm11, 0xE1A0000F, &R(PC));
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485 /* adjust PC depending on ARM state */
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487 if (R(CPSR) & ARM11_CPSR_J) /* Java state */
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489 arm11->reg_values[ARM11_RC_PC] -= 0;
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491 else if (R(CPSR) & ARM11_CPSR_T) /* Thumb state */
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493 arm11->reg_values[ARM11_RC_PC] -= 4;
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495 else /* ARM state */
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497 arm11->reg_values[ARM11_RC_PC] -= 8;
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500 // DEBUG("SAVE PC %08x", R(PC));
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502 arm11_run_instr_data_finish(arm11);
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506 for(i = 0; i < ARM11_REGCACHE_COUNT; i++)
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508 if (!arm11->reg_list[i].valid)
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510 if (arm11->reg_history[i].valid)
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511 INFO("%8s INVALID (%08x)", arm11_reg_defs[i].name, arm11->reg_history[i].value);
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515 if (arm11->reg_history[i].valid)
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517 if (arm11->reg_history[i].value != arm11->reg_values[i])
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518 INFO("%8s %08x (%08x)", arm11_reg_defs[i].name, arm11->reg_values[i], arm11->reg_history[i].value);
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522 INFO("%8s %08x (INVALID)", arm11_reg_defs[i].name, arm11->reg_values[i]);
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529 /** Restore processor state
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531 * This is called in preparation for the RESTART function.
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534 void arm11_leave_debug_state(arm11_common_t * arm11)
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538 arm11_run_instr_data_prepare(arm11);
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540 /** \todo TODO: handle other mode registers */
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542 /* restore R1 - R14 */
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544 for (i = 1; i < 15; i++)
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546 if (!arm11->reg_list[ARM11_RC_RX + i].dirty)
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549 /* MRC p14,0,r?,c0,c5,0 */
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550 arm11_run_instr_data_to_core1(arm11, 0xee100e15 | (i << 12), R(RX + i));
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552 // DEBUG("RESTORE R%d %08x", i, R(RX + i));
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555 arm11_run_instr_data_finish(arm11);
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558 /* spec says clear wDTR and rDTR; we assume they are clear as
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559 otherwide out programming would be sloppy */
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562 u32 DSCR = arm11_read_DSCR(arm11);
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564 if (DSCR & (ARM11_DSCR_RDTR_FULL | ARM11_DSCR_WDTR_FULL))
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566 ERROR("wDTR/rDTR inconsistent (DSCR %08x)", DSCR);
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570 arm11_run_instr_data_prepare(arm11);
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572 /* restore original wDTR */
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574 if ((R(DSCR) & ARM11_DSCR_WDTR_FULL) || arm11->reg_list[ARM11_RC_WDTR].dirty)
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576 /* MCR p14,0,R0,c0,c5,0 */
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577 arm11_run_instr_data_to_core_via_r0(arm11, 0xee000e15, R(WDTR));
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583 arm11_run_instr_data_to_core_via_r0(arm11, 0xe129f000, R(CPSR));
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589 arm11_run_instr_data_to_core_via_r0(arm11, 0xe1a0f000, R(PC));
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594 /* MRC p14,0,r0,c0,c5,0 */
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595 arm11_run_instr_data_to_core1(arm11, 0xee100e15, R(R0));
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597 arm11_run_instr_data_finish(arm11);
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602 arm11_write_DSCR(arm11, R(DSCR));
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607 if (R(DSCR) & ARM11_DSCR_RDTR_FULL || arm11->reg_list[ARM11_RC_RDTR].dirty)
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609 arm11_add_debug_SCAN_N(arm11, 0x05, -1);
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611 arm11_add_IR(arm11, ARM11_EXTEST, -1);
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613 scan_field_t chain5_fields[3];
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615 u8 Ready = 0; /* ignored */
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616 u8 Valid = 0; /* ignored */
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618 arm11_setup_field(arm11, 32, &R(RDTR), NULL, chain5_fields + 0);
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619 arm11_setup_field(arm11, 1, &Ready, NULL, chain5_fields + 1);
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620 arm11_setup_field(arm11, 1, &Valid, NULL, chain5_fields + 2);
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622 jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD);
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627 for(i = 0; i < ARM11_REGCACHE_COUNT; i++)
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629 arm11->reg_history[i].value = arm11->reg_values[i];
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630 arm11->reg_history[i].valid = arm11->reg_list[i].valid;
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632 arm11->reg_list[i].valid = 0;
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633 arm11->reg_list[i].dirty = 0;
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638 /* poll current target status */
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639 int arm11_poll(struct target_s *target)
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643 arm11_common_t * arm11 = target->arch_info;
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645 if (arm11->trst_active)
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648 u32 dscr = arm11_read_DSCR(arm11);
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650 DEBUG("DSCR %08x", dscr);
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652 arm11_check_init(arm11, &dscr);
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654 if (dscr & ARM11_DSCR_CORE_HALTED)
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656 // DEBUG("CH %d", target->state);
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658 if (target->state != TARGET_HALTED)
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660 DEBUG("enter TARGET_HALTED");
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661 target->state = TARGET_HALTED;
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662 target->debug_reason = arm11_get_DSCR_debug_reason(dscr);
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663 arm11_on_enter_debug_state(arm11);
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668 // DEBUG("CR %d", target->state);
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670 if (target->state != TARGET_RUNNING)
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672 DEBUG("enter TARGET_RUNNING");
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673 target->state = TARGET_RUNNING;
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674 target->debug_reason = DBG_REASON_NOTHALTED;
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680 /* architecture specific status reply */
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681 int arm11_arch_state(struct target_s *target)
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683 FNC_INFO_NOTIMPLEMENTED;
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689 /* target request support */
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690 int arm11_target_request_data(struct target_s *target, u32 size, u8 *buffer)
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692 FNC_INFO_NOTIMPLEMENTED;
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699 /* target execution control */
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700 int arm11_halt(struct target_s *target)
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704 arm11_common_t * arm11 = target->arch_info;
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706 DEBUG("target->state: %s", target_state_strings[target->state]);
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708 if (target->state == TARGET_HALTED)
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710 WARNING("target was already halted");
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711 return ERROR_TARGET_ALREADY_HALTED;
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714 if (arm11->trst_active)
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716 arm11->halt_requested = true;
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720 arm11_add_IR(arm11, ARM11_HALT, TAP_RTI);
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722 jtag_execute_queue();
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728 dscr = arm11_read_DSCR(arm11);
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730 if (dscr & ARM11_DSCR_CORE_HALTED)
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734 arm11_on_enter_debug_state(arm11);
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736 target->state = TARGET_HALTED;
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737 target->debug_reason = arm11_get_DSCR_debug_reason(dscr);
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743 int arm11_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution)
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747 arm11_common_t * arm11 = target->arch_info;
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749 DEBUG("target->state: %s", target_state_strings[target->state]);
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751 if (target->state != TARGET_HALTED)
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753 WARNING("target was not halted");
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754 return ERROR_TARGET_NOT_HALTED;
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760 target->state = TARGET_RUNNING;
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761 target->debug_reason = DBG_REASON_NOTHALTED;
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763 arm11_leave_debug_state(arm11);
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765 arm11_add_IR(arm11, ARM11_RESTART, TAP_RTI);
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767 jtag_execute_queue();
\r
771 u32 dscr = arm11_read_DSCR(arm11);
\r
773 DEBUG("DSCR %08x", dscr);
\r
775 if (dscr & ARM11_DSCR_CORE_RESTARTED)
\r
779 DEBUG("RES %d", target->state);
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784 int arm11_step(struct target_s *target, int current, u32 address, int handle_breakpoints)
\r
788 DEBUG("target->state: %s", target_state_strings[target->state]);
\r
790 if (target->state != TARGET_HALTED)
\r
792 WARNING("target was not halted");
\r
793 return ERROR_TARGET_NOT_HALTED;
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796 arm11_common_t * arm11 = target->arch_info;
\r
798 /** \todo TODO: check if break-/watchpoints make any sense at all in combination
\r
801 /** \todo TODO: check if disabling IRQs might be a good idea here. Alternatively
\r
802 the VCR might be something worth looking into. */
\r
804 /* Set up breakpoint for stepping */
\r
806 arm11_sc7_action_t brp[2];
\r
809 brp[0].address = ARM11_SC7_BVR0;
\r
810 brp[0].value = R(PC);
\r
812 brp[1].address = ARM11_SC7_BCR0;
\r
813 brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21);
\r
815 arm11_sc7_run(arm11, brp, asizeof(brp));
\r
819 arm11_leave_debug_state(arm11);
\r
821 arm11_add_IR(arm11, ARM11_RESTART, TAP_RTI);
\r
823 jtag_execute_queue();
\r
825 /** \todo TODO: add a timeout */
\r
827 /* wait for halt */
\r
831 u32 dscr = arm11_read_DSCR(arm11);
\r
833 DEBUG("DSCR %08x", dscr);
\r
835 if ((dscr & (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED)) ==
\r
836 (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED))
\r
841 /* clear breakpoint */
\r
843 arm11_sc7_clear_bw(arm11);
\r
848 arm11_on_enter_debug_state(arm11);
\r
850 // target->state = TARGET_HALTED;
\r
851 target->debug_reason = DBG_REASON_SINGLESTEP;
\r
857 /* target reset control */
\r
858 int arm11_assert_reset(struct target_s *target)
\r
863 /* assert reset lines */
\r
864 /* resets only the DBGTAP, not the ARM */
\r
866 jtag_add_reset(1, 0);
\r
867 jtag_add_sleep(5000);
\r
869 arm11_common_t * arm11 = target->arch_info;
\r
870 arm11->trst_active = true;
\r
876 int arm11_deassert_reset(struct target_s *target)
\r
881 DEBUG("target->state: %s", target_state_strings[target->state]);
\r
883 /* deassert reset lines */
\r
884 jtag_add_reset(0, 0);
\r
886 arm11_common_t * arm11 = target->arch_info;
\r
887 arm11->trst_active = false;
\r
889 if (arm11->halt_requested)
\r
890 return arm11_halt(target);
\r
896 int arm11_soft_reset_halt(struct target_s *target)
\r
898 FNC_INFO_NOTIMPLEMENTED;
\r
903 int arm11_prepare_reset_halt(struct target_s *target)
\r
905 FNC_INFO_NOTIMPLEMENTED;
\r
911 /* target register access for gdb */
\r
912 int arm11_get_gdb_reg_list(struct target_s *target, struct reg_s **reg_list[], int *reg_list_size)
\r
916 arm11_common_t * arm11 = target->arch_info;
\r
918 if (target->state != TARGET_HALTED)
\r
920 return ERROR_TARGET_NOT_HALTED;
\r
923 *reg_list_size = ARM11_GDB_REGISTER_COUNT;
\r
924 *reg_list = malloc(sizeof(reg_t*) * ARM11_GDB_REGISTER_COUNT);
\r
927 for (i = 16; i < 24; i++)
\r
929 (*reg_list)[i] = &arm11_gdb_dummy_fp_reg;
\r
932 (*reg_list)[24] = &arm11_gdb_dummy_fps_reg;
\r
936 for (i = 0; i < ARM11_REGCACHE_COUNT; i++)
\r
938 if (arm11_reg_defs[i].gdb_num == -1)
\r
941 (*reg_list)[arm11_reg_defs[i].gdb_num] = arm11->reg_list + i;
\r
948 /* target memory access
\r
949 * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
\r
950 * count: number of items of <size>
\r
952 int arm11_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
\r
954 /** \todo TODO: check if buffer cast to u32* and u16* might cause alignment problems */
\r
958 DEBUG("ADDR %08x SIZE %08x COUNT %08x", address, size, count);
\r
960 arm11_common_t * arm11 = target->arch_info;
\r
962 arm11_run_instr_data_prepare(arm11);
\r
964 /* MRC p14,0,r0,c0,c5,0 */
\r
965 arm11_run_instr_data_to_core1(arm11, 0xee100e15, address);
\r
970 /** \todo TODO: check if dirty is the right choice to force a rewrite on arm11_resume() */
\r
971 arm11->reg_list[ARM11_RC_R1].dirty = 1;
\r
975 /* ldrb r1, [r0], #1 */
\r
976 arm11_run_instr_no_data1(arm11, 0xe4d01001);
\r
979 /* MCR p14,0,R1,c0,c5,0 */
\r
980 arm11_run_instr_data_from_core(arm11, 0xEE001E15, &res, 1);
\r
988 arm11->reg_list[ARM11_RC_R1].dirty = 1;
\r
990 u16 * buf16 = (u16*)buffer;
\r
994 /* ldrh r1, [r0], #2 */
\r
995 arm11_run_instr_no_data1(arm11, 0xe0d010b2);
\r
999 /* MCR p14,0,R1,c0,c5,0 */
\r
1000 arm11_run_instr_data_from_core(arm11, 0xEE001E15, &res, 1);
\r
1009 /* LDC p14,c5,[R0],#4 */
\r
1010 arm11_run_instr_data_from_core(arm11, 0xecb05e01, (u32 *)buffer, count);
\r
1014 arm11_run_instr_data_finish(arm11);
\r
1019 int arm11_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer)
\r
1023 DEBUG("ADDR %08x SIZE %08x COUNT %08x", address, size, count);
\r
1025 arm11_common_t * arm11 = target->arch_info;
\r
1027 arm11_run_instr_data_prepare(arm11);
\r
1029 /* MRC p14,0,r0,c0,c5,0 */
\r
1030 arm11_run_instr_data_to_core1(arm11, 0xee100e15, address);
\r
1035 arm11->reg_list[ARM11_RC_R1].dirty = 1;
\r
1039 /* MRC p14,0,r1,c0,c5,0 */
\r
1040 arm11_run_instr_data_to_core1(arm11, 0xee101e15, *buffer++);
\r
1042 /* strb r1, [r0], #1 */
\r
1043 arm11_run_instr_no_data1(arm11, 0xe4c01001);
\r
1049 arm11->reg_list[ARM11_RC_R1].dirty = 1;
\r
1051 u16 * buf16 = (u16*)buffer;
\r
1055 /* MRC p14,0,r1,c0,c5,0 */
\r
1056 arm11_run_instr_data_to_core1(arm11, 0xee101e15, *buf16++);
\r
1058 /* strh r1, [r0], #2 */
\r
1059 arm11_run_instr_no_data1(arm11, 0xe0c010b2);
\r
1065 /** \todo TODO: check if buffer cast to u32* might cause alignment problems */
\r
1067 /* STC p14,c5,[R0],#4 */
\r
1068 arm11_run_instr_data_to_core(arm11, 0xeca05e01, (u32 *)buffer, count);
\r
1072 arm11_run_instr_data_finish(arm11);
\r
1078 /* write target memory in multiples of 4 byte, optimized for writing large quantities of data */
\r
1079 int arm11_bulk_write_memory(struct target_s *target, u32 address, u32 count, u8 *buffer)
\r
1083 return arm11_write_memory(target, address, 4, count, buffer);
\r
1087 int arm11_checksum_memory(struct target_s *target, u32 address, u32 count, u32* checksum)
\r
1089 FNC_INFO_NOTIMPLEMENTED;
\r
1095 /* target break-/watchpoint control
\r
1096 * rw: 0 = write, 1 = read, 2 = access
\r
1098 int arm11_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
\r
1100 FNC_INFO_NOTIMPLEMENTED;
\r
1105 int arm11_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
\r
1107 FNC_INFO_NOTIMPLEMENTED;
\r
1112 int arm11_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
\r
1114 FNC_INFO_NOTIMPLEMENTED;
\r
1119 int arm11_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
\r
1121 FNC_INFO_NOTIMPLEMENTED;
\r
1127 /* target algorithm support */
\r
1128 int arm11_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_param, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info)
\r
1130 FNC_INFO_NOTIMPLEMENTED;
\r
1136 int arm11_register_commands(struct command_context_s *cmd_ctx)
\r
1143 int arm11_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
\r
1149 ERROR("'target arm11' 4th argument <jtag chain pos>");
\r
1153 int chain_pos = strtoul(args[3], NULL, 0);
\r
1155 NEW(arm11_common_t, arm11, 1);
\r
1157 arm11->target = target;
\r
1159 /* prepare JTAG information for the new target */
\r
1160 arm11->jtag_info.chain_pos = chain_pos;
\r
1161 arm11->jtag_info.scann_size = 5;
\r
1163 arm_jtag_setup_connection(&arm11->jtag_info);
\r
1165 jtag_device_t *device = jtag_get_device(chain_pos);
\r
1167 if (device->ir_length != 5)
\r
1169 ERROR("'target arm11' expects 'jtag_device 5 0x01 0x1F 0x1E'");
\r
1173 target->arch_info = arm11;
\r
1178 int arm11_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
\r
1182 arm11_common_t * arm11 = target->arch_info;
\r
1184 /* check IDCODE */
\r
1186 arm11_add_IR(arm11, ARM11_IDCODE, -1);
\r
1188 scan_field_t idcode_field;
\r
1190 arm11_setup_field(arm11, 32, NULL, &arm11->device_id, &idcode_field);
\r
1192 jtag_add_dr_scan_vc(1, &idcode_field, TAP_PD);
\r
1196 arm11_add_debug_SCAN_N(arm11, 0x00, -1);
\r
1198 arm11_add_IR(arm11, ARM11_INTEST, -1);
\r
1200 scan_field_t chain0_fields[2];
\r
1202 arm11_setup_field(arm11, 32, NULL, &arm11->didr, chain0_fields + 0);
\r
1203 arm11_setup_field(arm11, 8, NULL, &arm11->implementor, chain0_fields + 1);
\r
1205 jtag_add_dr_scan_vc(asizeof(chain0_fields), chain0_fields, TAP_RTI);
\r
1207 jtag_execute_queue();
\r
1210 switch (arm11->device_id & 0x0FFFF000)
\r
1212 case 0x07B36000: INFO("found ARM1136"); break;
\r
1213 case 0x07B56000: INFO("found ARM1156"); break;
\r
1214 case 0x07B76000: INFO("found ARM1176"); break;
\r
1217 ERROR("'target arm11' expects IDCODE 0x*7B*7****");
\r
1222 arm11->brp = ((arm11->didr >> 24) & 0x0F) + 1;
\r
1223 arm11->wrp = ((arm11->didr >> 28) & 0x0F) + 1;
\r
1226 DEBUG("IDCODE %08x IMPLEMENTOR %02x DIDR %08x",
\r
1228 arm11->implementor,
\r
1231 arm11_build_reg_cache(target);
\r
1234 /* as a side-effect this reads DSCR and thus
\r
1235 * clears the ARM11_DSCR_STICKY_PRECISE_DATA_ABORT / Sticky Precise Data Abort Flag
\r
1236 * as suggested by the spec.
\r
1239 arm11_check_init(arm11, NULL);
\r
1244 int arm11_quit(void)
\r
1246 FNC_INFO_NOTIMPLEMENTED;
\r
1251 /** Load a register that is marked !valid in the register cache */
\r
1252 int arm11_get_reg(reg_t *reg)
\r
1256 target_t * target = ((arm11_reg_state_t *)reg->arch_info)->target;
\r
1258 if (target->state != TARGET_HALTED)
\r
1260 return ERROR_TARGET_NOT_HALTED;
\r
1263 /** \todo TODO: Check this. We assume that all registers are fetched debug entry. */
\r
1266 arm11_common_t *arm11 = target->arch_info;
\r
1267 const arm11_reg_defs_t * arm11_reg_info = arm11_reg_defs + ((arm11_reg_state_t *)reg->arch_info)->def_index;
\r
1273 /** Change a value in the register cache */
\r
1274 int arm11_set_reg(reg_t *reg, u8 *buf)
\r
1278 target_t * target = ((arm11_reg_state_t *)reg->arch_info)->target;
\r
1279 arm11_common_t *arm11 = target->arch_info;
\r
1280 // const arm11_reg_defs_t * arm11_reg_info = arm11_reg_defs + ((arm11_reg_state_t *)reg->arch_info)->def_index;
\r
1282 arm11->reg_values[((arm11_reg_state_t *)reg->arch_info)->def_index] = buf_get_u32(buf, 0, 32);
\r
1290 void arm11_build_reg_cache(target_t *target)
\r
1292 arm11_common_t *arm11 = target->arch_info;
\r
1294 NEW(reg_cache_t, cache, 1);
\r
1295 NEW(reg_t, reg_list, ARM11_REGCACHE_COUNT);
\r
1296 NEW(arm11_reg_state_t, arm11_reg_states, ARM11_REGCACHE_COUNT);
\r
1298 if (arm11_regs_arch_type == -1)
\r
1299 arm11_regs_arch_type = register_reg_arch_type(arm11_get_reg, arm11_set_reg);
\r
1301 arm11->reg_list = reg_list;
\r
1303 /* Build the process context cache */
\r
1304 cache->name = "arm11 registers";
\r
1305 cache->next = NULL;
\r
1306 cache->reg_list = reg_list;
\r
1307 cache->num_regs = ARM11_REGCACHE_COUNT;
\r
1309 reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
\r
1310 (*cache_p) = cache;
\r
1312 // armv7m->core_cache = cache;
\r
1313 // armv7m->process_context = cache;
\r
1317 /* Not very elegant assertion */
\r
1318 if (ARM11_REGCACHE_COUNT != asizeof(arm11->reg_values) ||
\r
1319 ARM11_REGCACHE_COUNT != asizeof(arm11_reg_defs) ||
\r
1320 ARM11_REGCACHE_COUNT != ARM11_RC_MAX)
\r
1322 ERROR("arm11->reg_values inconsistent (%d %d %d %d)", ARM11_REGCACHE_COUNT, asizeof(arm11->reg_values), asizeof(arm11_reg_defs), ARM11_RC_MAX);
\r
1326 for (i = 0; i < ARM11_REGCACHE_COUNT; i++)
\r
1328 reg_t * r = reg_list + i;
\r
1329 const arm11_reg_defs_t * rd = arm11_reg_defs + i;
\r
1330 arm11_reg_state_t * rs = arm11_reg_states + i;
\r
1332 r->name = rd->name;
\r
1334 r->value = (u8 *)(arm11->reg_values + i);
\r
1337 r->bitfield_desc = NULL;
\r
1338 r->num_bitfields = 0;
\r
1339 r->arch_type = arm11_regs_arch_type;
\r
1340 r->arch_info = rs;
\r
1342 rs->def_index = i;
\r
1343 rs->target = target;
\r
1348 arm11_run_instr_data_prepare(arm11);
\r
1350 /* MRC p14,0,r0,c0,c5,0 */
\r
1351 arm11_run_instr_data_to_core(arm11, 0xee100e15, 0xCA00003C);
\r
1352 /* MRC p14,0,r1,c0,c5,0 */
\r
1353 arm11_run_instr_data_to_core(arm11, 0xee101e15, 0xFFFFFFFF);
\r
1355 arm11_run_instr_data_finish(arm11);
\r