/*************************************************************************** * Copyright (C) 2007 by Dominic Rath * * Dominic.Rath@gmx.de * * * * Copyright (C) 2007,2008 Øyvind Harboe * * oyvind.harboe@zylin.com * * * * Copyright (C) 2008 by Spencer Oliver * * spen@spen-soft.co.uk * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "target.h" #include "target_request.h" #include "target_type.h" #include "trace.h" static int charmsg_mode = 0; static int target_asciimsg(struct target *target, uint32_t length) { char *msg = malloc(DIV_ROUND_UP(length + 1, 4) * 4); struct debug_msg_receiver *c = target->dbgmsg; target->type->target_request_data(target, DIV_ROUND_UP(length, 4), (uint8_t*)msg); msg[length] = 0; LOG_DEBUG("%s", msg); while (c) { command_print(c->cmd_ctx, "%s", msg); c = c->next; } return ERROR_OK; } static int target_charmsg(struct target *target, uint8_t msg) { LOG_USER_N("%c", msg); return ERROR_OK; } static int target_hexmsg(struct target *target, int size, uint32_t length) { uint8_t *data = malloc(DIV_ROUND_UP(length * size, 4) * 4); char line[128]; int line_len; struct debug_msg_receiver *c = target->dbgmsg; uint32_t i; LOG_DEBUG("size: %i, length: %i", (int)size, (int)length); target->type->target_request_data(target, DIV_ROUND_UP(length * size, 4), (uint8_t*)data); line_len = 0; for (i = 0; i < length; i++) { switch (size) { case 4: line_len += snprintf(line + line_len, 128 - line_len, "%8.8" PRIx32 " ", le_to_h_u32(data + (4*i))); break; case 2: line_len += snprintf(line + line_len, 128 - line_len, "%4.4x ", le_to_h_u16(data + (2*i))); break; case 1: line_len += snprintf(line + line_len, 128 - line_len, "%2.2x ", data[i]); break; } if ((i%8 == 7) || (i == length - 1)) { LOG_DEBUG("%s", line); while (c) { command_print(c->cmd_ctx, "%s", line); c = c->next; } c = target->dbgmsg; line_len = 0; } } free(data); return ERROR_OK; } /* handle requests from the target received by a target specific * side-band channel (e.g. ARM7/9 DCC) */ int target_request(struct target *target, uint32_t request) { target_req_cmd_t target_req_cmd = request & 0xff; if (charmsg_mode) { target_charmsg(target, target_req_cmd); return ERROR_OK; } switch (target_req_cmd) { case TARGET_REQ_TRACEMSG: trace_point(target, (request & 0xffffff00) >> 8); break; case TARGET_REQ_DEBUGMSG: if (((request & 0xff00) >> 8) == 0) { target_asciimsg(target, (request & 0xffff0000) >> 16); } else { target_hexmsg(target, (request & 0xff00) >> 8, (request & 0xffff0000) >> 16); } break; case TARGET_REQ_DEBUGCHAR: target_charmsg(target, (request & 0x00ff0000) >> 16); break; /* case TARGET_REQ_SEMIHOSTING: * break; */ default: LOG_ERROR("unknown target request: %2.2x", target_req_cmd); break; } return ERROR_OK; } static int add_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target) { struct debug_msg_receiver **p = &target->dbgmsg; if (target == NULL) return ERROR_INVALID_ARGUMENTS; /* see if there's already a list */ if (*p) { /* find end of linked list */ p = &target->dbgmsg; while ((*p)->next) p = &((*p)->next); p = &((*p)->next); } /* add new debug message receiver */ (*p) = malloc(sizeof(struct debug_msg_receiver)); (*p)->cmd_ctx = cmd_ctx; (*p)->next = NULL; /* enable callback */ target->dbg_msg_enabled = 1; return ERROR_OK; } static struct debug_msg_receiver* find_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target) { int do_all_targets = 0; struct debug_msg_receiver **p = &target->dbgmsg; /* if no target has been specified search all of them */ if (target == NULL) { /* if no targets haven been specified */ if (all_targets == NULL) return NULL; target = all_targets; do_all_targets = 1; } do { while (*p) { if ((*p)->cmd_ctx == cmd_ctx) { return *p; } p = &((*p)->next); } target = target->next; } while (target && do_all_targets); return NULL; } int delete_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target) { struct debug_msg_receiver **p; struct debug_msg_receiver *c; int do_all_targets = 0; /* if no target has been specified search all of them */ if (target == NULL) { /* if no targets haven been specified */ if (all_targets == NULL) return ERROR_OK; target = all_targets; do_all_targets = 1; } do { p = &target->dbgmsg; c = *p; while (c) { struct debug_msg_receiver *next = c->next; if (c->cmd_ctx == cmd_ctx) { *p = next; free(c); if (*p == NULL) { /* disable callback */ target->dbg_msg_enabled = 0; } return ERROR_OK; } else p = &(c->next); c = next; } target = target->next; } while (target && do_all_targets); return ERROR_OK; } COMMAND_HANDLER(handle_target_request_debugmsgs_command) { struct target *target = get_current_target(CMD_CTX); int receiving = 0; /* see if reciever is already registered */ if (find_debug_msg_receiver(CMD_CTX, target) != NULL) receiving = 1; if (CMD_ARGC > 0) { if (!strcmp(CMD_ARGV[0], "enable") || !strcmp(CMD_ARGV[0], "charmsg")) { /* don't register if this command context is already receiving */ if (!receiving) { receiving = 1; add_debug_msg_receiver(CMD_CTX, target); } charmsg_mode = !strcmp(CMD_ARGV[0], "charmsg"); } else if (!strcmp(CMD_ARGV[0], "disable")) { /* no need to delete a receiver if none is registered */ if (receiving) { receiving = 0; delete_debug_msg_receiver(CMD_CTX, target); } } else { command_print(CMD_CTX, "usage: target_request debugmsgs ['enable'|'disable'|'charmsg']"); } } command_print(CMD_CTX, "receiving debug messages from current target %s", (receiving) ? (charmsg_mode?"charmsg":"enabled") : "disabled"); return ERROR_OK; } static const struct command_registration target_req_exec_command_handlers[] = { { .name = "debugmsgs", .handler = handle_target_request_debugmsgs_command, .mode = COMMAND_EXEC, .help = "display and/or modify reception of debug messages from target", .usage = "['enable'|'charmsg'|'disable']", }, COMMAND_REGISTRATION_DONE }; static const struct command_registration target_req_command_handlers[] = { { .name = "target_request", .mode = COMMAND_ANY, .help = "target request command group", .chain = target_req_exec_command_handlers, }, COMMAND_REGISTRATION_DONE }; int target_request_register_commands(struct command_context *cmd_ctx) { return register_commands(cmd_ctx, NULL, target_req_command_handlers); } 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288