X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Farm7_9_common.c;h=6a7b77c4ae441eb58868db154ae2bf3340c90767;hp=c04968efae4c469e775ab1f66e674ffa23296e75;hb=7c7fed0283e5c6e434de94af443218ef78175e87;hpb=11ce572bbed985819989e80dff8d6402fd95b673 diff --git a/src/target/arm7_9_common.c b/src/target/arm7_9_common.c index c04968efae..6a7b77c4ae 100644 --- a/src/target/arm7_9_common.c +++ b/src/target/arm7_9_common.c @@ -48,7 +48,6 @@ #include #include -#include #include #include #include @@ -66,7 +65,6 @@ int handle_arm7_9_fast_memory_access_command(struct command_context_s *cmd_ctx, int handle_arm7_9_dcc_downloads_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_arm7_9_etm_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); - static int arm7_9_clear_watchpoints(arm7_9_common_t *arm7_9) { embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_W0_CONTROL_VALUE], 0x0); @@ -79,6 +77,26 @@ static int arm7_9_clear_watchpoints(arm7_9_common_t *arm7_9) return jtag_execute_queue(); } +static void arm7_9_assign_wp(arm7_9_common_t *arm7_9, breakpoint_t *breakpoint) +{ + if (!arm7_9->wp0_used) + { + arm7_9->wp0_used = 1; + breakpoint->set = 1; + arm7_9->wp_available--; + } + else if (!arm7_9->wp1_used) + { + arm7_9->wp1_used = 1; + breakpoint->set = 2; + arm7_9->wp_available--; + } + else + { + LOG_ERROR("BUG: no hardware comparator available"); + } +} + /* set up embedded ice registers */ static int arm7_9_set_software_breakpoints(arm7_9_common_t *arm7_9) { @@ -143,7 +161,6 @@ int arm7_9_setup(target_t *target) return arm7_9_clear_watchpoints(arm7_9); } - int arm7_9_get_arch_pointers(target_t *target, armv4_5_common_t **armv4_5_p, arm7_9_common_t **arm7_9_p) { armv4_5_common_t *armv4_5 = target->arch_info; @@ -184,6 +201,13 @@ int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { /* either an ARM (4 byte) or Thumb (2 byte) breakpoint */ u32 mask = (breakpoint->length == 4) ? 0x3u : 0x1u; + + /* reassign a hw breakpoint */ + if (breakpoint->set==0) + { + arm7_9_assign_wp(arm7_9, breakpoint); + } + if (breakpoint->set==1) { embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_W0_ADDR_VALUE], breakpoint->address); @@ -231,7 +255,7 @@ int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint) return retval; } - if ((retval = target->type->read_memory(target, breakpoint->address, 4, 1, (u8 *)&verify)) != ERROR_OK) + if ((retval = target_read_u32(target, breakpoint->address, &verify)) != ERROR_OK) { return retval; } @@ -255,7 +279,7 @@ int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint) return retval; } - if ((retval = target->type->read_memory(target, breakpoint->address, 2, 1, (u8 *)&verify)) != ERROR_OK) + if ((retval = target_read_u16(target, breakpoint->address, &verify)) != ERROR_OK) { return retval; } @@ -269,7 +293,6 @@ int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint) } return retval; - } int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint) @@ -291,11 +314,13 @@ int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_W0_CONTROL_VALUE], 0x0); arm7_9->wp0_used = 0; + arm7_9->wp_available++; } else if (breakpoint->set == 2) { embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_W1_CONTROL_VALUE], 0x0); arm7_9->wp1_used = 0; + arm7_9->wp_available++; } retval = jtag_execute_queue(); breakpoint->set = 0; @@ -370,25 +395,9 @@ int arm7_9_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint) if (breakpoint->type == BKPT_HARD) { - arm7_9->wp_available--; - - if (!arm7_9->wp0_used) - { - arm7_9->wp0_used = 1; - breakpoint->set = 1; - } - else if (!arm7_9->wp1_used) - { - arm7_9->wp1_used = 1; - breakpoint->set = 2; - } - else - { - LOG_ERROR("BUG: no hardware comparator available"); - } + arm7_9_assign_wp(arm7_9, breakpoint); } - arm7_9->breakpoint_count++; return arm7_9_set_breakpoint(target, breakpoint); @@ -571,9 +580,6 @@ int arm7_9_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint) return ERROR_OK; } - - - int arm7_9_execute_sys_speed(struct target_s *target) { int retval; @@ -584,7 +590,7 @@ int arm7_9_execute_sys_speed(struct target_s *target) reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT]; /* set RESTART instruction */ - jtag_add_end_state(TAP_RTI); + jtag_add_end_state(TAP_IDLE); if (arm7_9->need_bypass_before_restart) { arm7_9->need_bypass_before_restart = 0; arm_jtag_set_instr(jtag_info, 0xf, NULL); @@ -630,7 +636,7 @@ int arm7_9_execute_fast_sys_speed(struct target_s *target) reg_t *dbg_stat = &arm7_9->eice_cache->reg_list[EICE_DBG_STAT]; /* set RESTART instruction */ - jtag_add_end_state(TAP_RTI); + jtag_add_end_state(TAP_IDLE); if (arm7_9->need_bypass_before_restart) { arm7_9->need_bypass_before_restart = 0; arm_jtag_set_instr(jtag_info, 0xf, NULL); @@ -642,9 +648,9 @@ int arm7_9_execute_fast_sys_speed(struct target_s *target) /* check for DBGACK and SYSCOMP set (others don't care) */ /* NB! These are constants that must be available until after next jtag_execute() and - we evaluate the values upon first execution in lieu of setting up these constants - during early setup. - */ + * we evaluate the values upon first execution in lieu of setting up these constants + * during early setup. + * */ buf_set_u32(check_value, 0, 32, 0x9); buf_set_u32(check_mask, 0, 32, 0x9); set=1; @@ -662,7 +668,8 @@ int arm7_9_target_request_data(target_t *target, u32 size, u8 *buffer) arm7_9_common_t *arm7_9 = armv4_5->arch_info; arm_jtag_t *jtag_info = &arm7_9->jtag_info; u32 *data; - int i, retval = ERROR_OK; + int retval = ERROR_OK; + u32 i; data = malloc(size * (sizeof(u32))); @@ -689,7 +696,6 @@ int arm7_9_handle_target_request(void *priv) arm_jtag_t *jtag_info = &arm7_9->jtag_info; reg_t *dcc_control = &arm7_9->eice_cache->reg_list[EICE_COMMS_CTRL]; - if (!target->dbg_msg_enabled) return ERROR_OK; @@ -857,28 +863,25 @@ int arm7_9_assert_reset(target_t *target) jtag_add_reset(0, 1); } - target->state = TARGET_RESET; jtag_add_sleep(50000); armv4_5_invalidate_core_regs(target); - if ((target->reset_halt)&&((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)) + if ((target->reset_halt)&&((jtag_reset_config & RESET_SRST_PULLS_TRST)==0)) { /* debug entry was already prepared in arm7_9_assert_reset() */ target->debug_reason = DBG_REASON_DBGRQ; } return ERROR_OK; - } int arm7_9_deassert_reset(target_t *target) { int retval=ERROR_OK; LOG_DEBUG("target->state: %s", - Jim_Nvp_value2name_simple( nvp_target_state,target->state)->name); - + Jim_Nvp_value2name_simple( nvp_target_state,target->state)->name); /* deassert reset lines */ jtag_add_reset(0, 0); @@ -1283,7 +1286,7 @@ int arm7_9_full_context(target_t *target) /* iterate through processor modes (User, FIQ, IRQ, SVC, ABT, UND) * SYS shares registers with User, so we don't touch SYS */ - for(i = 0; i < 6; i++) + for (i = 0; i < 6; i++) { u32 mask = 0; u32* reg_p[16]; @@ -1492,14 +1495,14 @@ int arm7_9_restart_core(struct target_s *target) arm_jtag_t *jtag_info = &arm7_9->jtag_info; /* set RESTART instruction */ - jtag_add_end_state(TAP_RTI); + jtag_add_end_state(TAP_IDLE); if (arm7_9->need_bypass_before_restart) { arm7_9->need_bypass_before_restart = 0; arm_jtag_set_instr(jtag_info, 0xf, NULL); } arm_jtag_set_instr(jtag_info, 0x4, NULL); - jtag_add_runtest(1, TAP_RTI); + jtag_add_runtest(1, TAP_IDLE); return jtag_execute_queue(); } @@ -1527,7 +1530,6 @@ void arm7_9_enable_breakpoints(struct target_s *target) } } - int arm7_9_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution) { armv4_5_common_t *armv4_5 = target->arch_info; @@ -1553,6 +1555,9 @@ int arm7_9_resume(struct target_s *target, int current, u32 address, int handle_ if (!current) buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, address); + u32 current_pc; + current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32); + /* the front-end may request us not to handle breakpoints */ if (handle_breakpoints) { @@ -1564,8 +1569,18 @@ int arm7_9_resume(struct target_s *target, int current, u32 address, int handle_ return retval; } + /* calculate PC of next instruction */ + u32 next_pc; + if ((retval = arm_simulate_step(target, &next_pc)) != ERROR_OK) + { + u32 current_opcode; + target_read_u32(target, current_pc, ¤t_opcode); + LOG_ERROR("BUG: couldn't calculate PC of next instruction, current opcode was 0x%8.8x", current_opcode); + return retval; + } + LOG_DEBUG("enable single-step"); - arm7_9->enable_single_step(target); + arm7_9->enable_single_step(target, next_pc); target->debug_reason = DBG_REASON_SINGLESTEP; @@ -1675,23 +1690,13 @@ int arm7_9_resume(struct target_s *target, int current, u32 address, int handle_ return ERROR_OK; } -void arm7_9_enable_eice_step(target_t *target) +void arm7_9_enable_eice_step(target_t *target, u32 next_pc) { armv4_5_common_t *armv4_5 = target->arch_info; arm7_9_common_t *arm7_9 = armv4_5->arch_info; - int retval; u32 current_pc; current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32); - - u32 next_pc; - if ((retval = arm_simulate_step(target, &next_pc)) != ERROR_OK) - { - u32 current_opcode; - target_read_u32(target, current_pc, ¤t_opcode); - LOG_ERROR("BUG: couldn't calculate PC of next instruction, current opcode was 0x%8.8x", current_opcode); - return retval; - } if(next_pc != current_pc) { @@ -1756,6 +1761,9 @@ int arm7_9_step(struct target_s *target, int current, u32 address, int handle_br if (!current) buf_set_u32(armv4_5->core_cache->reg_list[15].value, 0, 32, address); + u32 current_pc; + current_pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32); + /* the front-end may request us not to handle breakpoints */ if (handle_breakpoints) if ((breakpoint = breakpoint_find(target, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32)))) @@ -1766,12 +1774,22 @@ int arm7_9_step(struct target_s *target, int current, u32 address, int handle_br target->debug_reason = DBG_REASON_SINGLESTEP; + /* calculate PC of next instruction */ + u32 next_pc; + if ((retval = arm_simulate_step(target, &next_pc)) != ERROR_OK) + { + u32 current_opcode; + target_read_u32(target, current_pc, ¤t_opcode); + LOG_ERROR("BUG: couldn't calculate PC of next instruction, current opcode was 0x%8.8x", current_opcode); + return retval; + } + if ((retval = arm7_9_restore_context(target)) != ERROR_OK) { return retval; } - arm7_9->enable_single_step(target); + arm7_9->enable_single_step(target, next_pc); if (armv4_5->core_state == ARMV4_5_STATE_ARM) { @@ -1817,7 +1835,6 @@ int arm7_9_step(struct target_s *target, int current, u32 address, int handle_br } return err; - } int arm7_9_read_core_reg(struct target_s *target, int num, enum armv4_5_mode mode) @@ -1884,7 +1901,6 @@ int arm7_9_read_core_reg(struct target_s *target, int num, enum armv4_5_mode mod } return ERROR_OK; - } int arm7_9_write_core_reg(struct target_s *target, int num, enum armv4_5_mode mode, u32 value) @@ -1954,7 +1970,7 @@ int arm7_9_read_memory(struct target_s *target, u32 address, u32 size, u32 count arm7_9_common_t *arm7_9 = armv4_5->arch_info; u32 reg[16]; - int num_accesses = 0; + u32 num_accesses = 0; int thisrun_accesses; int i; u32 cpsr; @@ -2000,9 +2016,11 @@ int arm7_9_read_memory(struct target_s *target, u32 address, u32 size, u32 count * from a sufficiently high clock (32 kHz is usually too slow) */ if (arm7_9->fast_memory_access) - arm7_9_execute_fast_sys_speed(target); + retval = arm7_9_execute_fast_sys_speed(target); else - arm7_9_execute_sys_speed(target); + retval = arm7_9_execute_sys_speed(target); + if (retval != ERROR_OK) + return retval; arm7_9->read_core_regs_target_buffer(target, reg_list, buffer, 4); @@ -2129,7 +2147,7 @@ int arm7_9_write_memory(struct target_s *target, u32 address, u32 size, u32 coun reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]; u32 reg[16]; - int num_accesses = 0; + u32 num_accesses = 0; int thisrun_accesses; int i; u32 cpsr; @@ -2308,7 +2326,6 @@ int arm7_9_write_memory(struct target_s *target, u32 address, u32 size, u32 coun static int dcc_count; static u8 *dcc_buffer; - static int arm7_9_dcc_completion(struct target_s *target, u32 exit_point, int timeout_ms, void *arch_info) { int retval = ERROR_OK; @@ -2324,16 +2341,16 @@ static int arm7_9_dcc_completion(struct target_s *target, u32 exit_point, int ti if (count>2) { /* Handle first & last using standard embeddedice_write_reg and the middle ones w/the - core function repeated. - */ + * core function repeated. */ embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], fast_target_buffer_get_u32(buffer, little)); buffer+=4; embeddedice_reg_t *ice_reg = arm7_9->eice_cache->reg_list[EICE_COMMS_DATA].arch_info; u8 reg_addr = ice_reg->addr & 0x1f; - int chain_pos = ice_reg->jtag_info->chain_pos; + jtag_tap_t *tap; + tap = ice_reg->jtag_info->tap; - embeddedice_write_dcc(chain_pos, reg_addr, buffer, little, count-2); + embeddedice_write_dcc(tap, reg_addr, buffer, little, count-2); buffer += (count-2)*4; embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_COMMS_DATA], fast_target_buffer_get_u32(buffer, little)); @@ -2354,7 +2371,6 @@ static int arm7_9_dcc_completion(struct target_s *target, u32 exit_point, int ti return target_wait_state(target, TARGET_HALTED, 500); } - static const u32 dcc_code[] = { /* MRC TST BNE MRC STR B */ @@ -2363,7 +2379,6 @@ static const u32 dcc_code[] = int armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info, int (*run_it)(struct target_s *target, u32 exit_point, int timeout_ms, void *arch_info)); - int arm7_9_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer) { int retval; @@ -2410,8 +2425,6 @@ int arm7_9_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffe buf_set_u32(reg_params[0].value, 0, 32, address); - //armv4_5_run_algorithm_inner(struct target_s *target, int num_mem_params, mem_param_t *mem_params, - // int num_reg_params, reg_param_t *reg_params, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info, int (*run_it)(struct target_s *target, u32 exit_point, int timeout_ms, void *arch_info)) dcc_count=count; dcc_buffer=buffer; retval = armv4_5_run_algorithm_inner(target, 0, NULL, 1, reg_params, @@ -2467,7 +2480,7 @@ int arm7_9_checksum_memory(struct target_s *target, u32 address, u32 count, u32* 0x04C11DB7 /* CRC32XOR: .word 0x04C11DB7 */ }; - int i; + u32 i; if (target_alloc_working_area(target, sizeof(arm7_9_crc_code), &crc_algorithm) != ERROR_OK) { @@ -2519,7 +2532,7 @@ int arm7_9_blank_check_memory(struct target_s *target, u32 address, u32 count, u reg_param_t reg_params[3]; armv4_5_algorithm_t armv4_5_info; int retval; - int i; + u32 i; u32 erase_check_code[] = { @@ -2592,8 +2605,6 @@ int arm7_9_register_commands(struct command_context_s *cmd_ctx) register_command(cmd_ctx, arm7_9_cmd, "dbgrq", handle_arm7_9_dbgrq_command, COMMAND_ANY, "use EmbeddedICE dbgrq instead of breakpoint for target halt requests "); - register_command(cmd_ctx, arm7_9_cmd, "fast_writes", handle_arm7_9_fast_memory_access_command, - COMMAND_ANY, "(deprecated, see: arm7_9 fast_memory_access)"); register_command(cmd_ctx, arm7_9_cmd, "fast_memory_access", handle_arm7_9_fast_memory_access_command, COMMAND_ANY, "use fast memory accesses instead of slower but potentially unsafe slow accesses "); register_command(cmd_ctx, arm7_9_cmd, "dcc_downloads", handle_arm7_9_dcc_downloads_command, @@ -2724,10 +2735,8 @@ int handle_arm7_9_write_core_reg_command(struct command_context_s *cmd_ctx, char value = strtoul(args[2], NULL, 0); return arm7_9_write_core_reg(target, num, mode, value); - } - int handle_arm7_9_dbgrq_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { target_t *target = get_current_target(cmd_ctx);