X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fserver%2Fgdb_server.c;h=8fb3b64f954f1c539516f14cc7024e6585f6600e;hp=1d29d2129173c27d7a2516a1db2f20b3a5532b26;hb=8d73c2a9b0c00c870694a57f7cfbc23e354855ac;hpb=703dc714c86b83e73acc0ed82944053f0f3b842f diff --git a/src/server/gdb_server.c b/src/server/gdb_server.c index 1d29d21291..8fb3b64f95 100644 --- a/src/server/gdb_server.c +++ b/src/server/gdb_server.c @@ -2,6 +2,9 @@ * Copyright (C) 2005 by Dominic Rath * * Dominic.Rath@gmx.de * * * + * Copyright (C) 2007,2008 Øyvind Harboe * + * oyvind.harboe@zylin.com * + * * * 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 * @@ -43,6 +46,9 @@ #define _DEBUG_GDB_IO_ #endif +static int gdb_breakpoint_override; +static enum breakpoint_type gdb_breakpoint_override_type; + extern int gdb_error(connection_t *connection, int retval); static unsigned short gdb_port; static const char *DIGITS = "0123456789abcdef"; @@ -63,8 +69,10 @@ enum gdb_detach_mode detach_mode = GDB_DETACH_RESUME; /* set if we are sending a memory map to gdb * via qXfer:memory-map:read packet */ -int gdb_use_memory_map = 0; -int gdb_flash_program = 0; +/* enabled by default*/ +int gdb_use_memory_map = 1; +/* enabled by default*/ +int gdb_flash_program = 1; /* if set, data aborts cause an error to be reported in memory read packets * see the code in gdb_read_memory_packet() for further explanations */ @@ -85,12 +93,11 @@ int gdb_last_signal(target_t *target) case DBG_REASON_NOTHALTED: return 0x0; /* no signal... shouldn't happen */ default: - USER("undefined debug reason %d - target needs reset", target->debug_reason); + LOG_USER("undefined debug reason %d - target needs reset", target->debug_reason); return 0x0; } } -#ifndef _WIN32 int check_pending(connection_t *connection, int timeout_s, int *got_data) { /* a non-blocking socket will block if there is 0 bytes available on the socket, @@ -131,7 +138,6 @@ int check_pending(connection_t *connection, int timeout_s, int *got_data) *got_data=FD_ISSET(connection->fd, &read_fds)!=0; return ERROR_OK; } -#endif int gdb_get_char(connection_t *connection, int* next_char) { @@ -151,7 +157,7 @@ int gdb_get_char(connection_t *connection, int* next_char) connection->input_pending = 0; #ifdef _DEBUG_GDB_IO_ - DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char); + LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char); #endif return ERROR_OK; @@ -159,11 +165,9 @@ int gdb_get_char(connection_t *connection, int* next_char) for (;;) { -#ifndef _WIN32 retval=check_pending(connection, 1, NULL); if (retval!=ERROR_OK) return retval; -#endif gdb_con->buf_cnt = read_socket(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE); if (gdb_con->buf_cnt > 0) { @@ -190,7 +194,7 @@ int gdb_get_char(connection_t *connection, int* next_char) gdb_con->closed = 1; return ERROR_SERVER_REMOTE_CLOSED; default: - ERROR("read: %d", errno); + LOG_ERROR("read: %d", errno); exit(-1); } #else @@ -206,7 +210,7 @@ int gdb_get_char(connection_t *connection, int* next_char) gdb_con->closed = 1; return ERROR_SERVER_REMOTE_CLOSED; default: - ERROR("read: %s", strerror(errno)); + LOG_ERROR("read: %s", strerror(errno)); gdb_con->closed = 1; return ERROR_SERVER_REMOTE_CLOSED; } @@ -217,7 +221,7 @@ int gdb_get_char(connection_t *connection, int* next_char) debug_buffer = malloc(gdb_con->buf_cnt + 1); memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt); debug_buffer[gdb_con->buf_cnt] = 0; - DEBUG("received '%s'", debug_buffer); + LOG_DEBUG("received '%s'", debug_buffer); free(debug_buffer); #endif @@ -229,7 +233,7 @@ int gdb_get_char(connection_t *connection, int* next_char) else connection->input_pending = 0; #ifdef _DEBUG_GDB_IO_ - DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char); + LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char); #endif return retval; @@ -246,7 +250,7 @@ int gdb_putback_char(connection_t *connection, int last_char) } else { - ERROR("BUG: couldn't put character back"); + LOG_ERROR("BUG: couldn't put character back"); } return ERROR_OK; @@ -289,7 +293,6 @@ int gdb_put_packet_inner(connection_t *connection, char *buffer, int len) * however sometimes '-' is sent even though we've already received * an ACK (+) for everything we've sent off. */ -#ifndef _WIN32 int gotdata; for (;;) { @@ -299,9 +302,8 @@ int gdb_put_packet_inner(connection_t *connection, char *buffer, int len) break; if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK) return retval; - WARNING("Discard unexpected char %c", reply); + LOG_WARNING("Discard unexpected char %c", reply); } -#endif #endif while (1) @@ -310,7 +312,7 @@ int gdb_put_packet_inner(connection_t *connection, char *buffer, int len) debug_buffer = malloc(len + 1); memcpy(debug_buffer, buffer, len); debug_buffer[len] = 0; - DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum); + LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum); free(debug_buffer); #endif @@ -336,7 +338,10 @@ int gdb_put_packet_inner(connection_t *connection, char *buffer, int len) gdb_write(connection, buffer, len); gdb_write(connection, local_buffer+1, 3); } - + + if (gdb_con->noack_mode) + break; + if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK) return retval; @@ -346,7 +351,7 @@ int gdb_put_packet_inner(connection_t *connection, char *buffer, int len) { /* Stop sending output packets for now */ log_remove_callback(gdb_log_callback, connection); - WARNING("negative reply, retrying"); + LOG_WARNING("negative reply, retrying"); } else if (reply == 0x3) { @@ -359,18 +364,18 @@ int gdb_put_packet_inner(connection_t *connection, char *buffer, int len) { /* Stop sending output packets for now */ log_remove_callback(gdb_log_callback, connection); - WARNING("negative reply, retrying"); + LOG_WARNING("negative reply, retrying"); } else { - ERROR("unknown character 0x%2.2x in reply, dropping connection", reply); + LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply); gdb_con->closed=1; return ERROR_SERVER_REMOTE_CLOSED; } } else { - ERROR("unknown character 0x%2.2x in reply, dropping connection", reply); + LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply); gdb_con->closed=1; return ERROR_SERVER_REMOTE_CLOSED; } @@ -407,7 +412,7 @@ int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len) return retval; #ifdef _DEBUG_GDB_IO_ - DEBUG("character: '%c'", character); + LOG_DEBUG("character: '%c'", character); #endif switch (character) @@ -415,17 +420,19 @@ int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len) case '$': break; case '+': - WARNING("acknowledgment received, but no packet pending"); + /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c) + * incase anyone tries to debug why they receive this warning every time */ + LOG_WARNING("acknowledgment received, but no packet pending"); break; case '-': - WARNING("negative acknowledgment, but no packet pending"); + LOG_WARNING("negative acknowledgment, but no packet pending"); break; case 0x3: gdb_con->ctrl_c = 1; *len = 0; return ERROR_OK; default: - WARNING("ignoring character 0x%x", character); + LOG_WARNING("ignoring character 0x%x", character); break; } } while (character != '$'); @@ -473,7 +480,8 @@ int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len) i++; my_checksum += character & 0xff; buffer[count++] = (character ^ 0x20) & 0xff; - } else + } + else { my_checksum += character & 0xff; buffer[count++] = character & 0xff; @@ -486,7 +494,7 @@ int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len) } if (count > *len) { - ERROR("packet buffer too small"); + LOG_ERROR("packet buffer too small"); return ERROR_GDB_BUFFER_TOO_SMALL; } @@ -511,7 +519,6 @@ int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len) my_checksum += character & 0xff; buffer[count++] = character & 0xff; } - } *len = count; @@ -526,12 +533,22 @@ int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len) if (my_checksum == strtoul(checksum, NULL, 16)) { + if (gdb_con->noack_mode) + break; gdb_write(connection, "+", 1); break; } - WARNING("checksum error, requesting retransmission"); - gdb_write(connection, "-", 1); + if (!gdb_con->noack_mode) + { + LOG_WARNING("checksum error, requesting retransmission"); + gdb_write(connection, "-", 1); + } + else + { + LOG_WARNING("checksum error, no-ack-mode"); + break; + } } if (gdb_con->closed) return ERROR_SERVER_REMOTE_CLOSED; @@ -570,77 +587,69 @@ int gdb_output_con(connection_t *connection, const char* line) return ERROR_OK; } -int gdb_output(struct command_context_s *context, char* line) +int gdb_output(struct command_context_s *context, const char* line) { /* this will be dumped to the log and also sent as an O packet if possible */ - USER_N("%s", line); + LOG_USER_N("%s", line); return ERROR_OK; } int gdb_program_handler(struct target_s *target, enum target_event event, void *priv) { - FILE *script; struct command_context_s *cmd_ctx = priv; - if (target->gdb_program_script) + target_invoke_script(cmd_ctx, target, "gdb_program"); + jtag_execute_queue(); + + return ERROR_OK; +} + +static void gdb_frontend_halted(struct target_s *target, connection_t *connection) +{ + gdb_connection_t *gdb_connection = connection->priv; + + /* In the GDB protocol when we are stepping or coninuing execution, + * we have a lingering reply. Upon receiving a halted event + * when we have that lingering packet, we reply to the original + * step or continue packet. + * + * Executing monitor commands can bring the target in and + * out of the running state so we'll see lots of TARGET_EVENT_XXX + * that are to be ignored. + */ + if (gdb_connection->frontend_state == TARGET_RUNNING) { - script = open_file_from_path(target->gdb_program_script, "r"); - if (!script) + char sig_reply[4]; + int signal; + /* stop forwarding log packets! */ + log_remove_callback(gdb_log_callback, connection); + + if (gdb_connection->ctrl_c) { - ERROR("couldn't open script file %s", target->gdb_program_script); - return ERROR_OK; + signal = 0x2; + gdb_connection->ctrl_c = 0; + } + else + { + signal = gdb_last_signal(target); } - INFO("executing gdb_program script '%s'", target->gdb_program_script); - command_run_file(cmd_ctx, script, COMMAND_EXEC); - fclose(script); - - jtag_execute_queue(); + snprintf(sig_reply, 4, "T%2.2x", signal); + gdb_put_packet(connection, sig_reply, 3); + gdb_connection->frontend_state = TARGET_HALTED; } - - return ERROR_OK; } int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv) { connection_t *connection = priv; - gdb_connection_t *gdb_connection = connection->priv; - char sig_reply[4]; - int signal; switch (event) { case TARGET_EVENT_HALTED: - /* In the GDB protocol when we are stepping or coninuing execution, - * we have a lingering reply. Upon receiving a halted event - * when we have that lingering packet, we reply to the original - * step or continue packet. - * - * Executing monitor commands can bring the target in and - * out of the running state so we'll see lots of TARGET_EVENT_XXX - * that are to be ignored. - */ - if (gdb_connection->frontend_state == TARGET_RUNNING) - { - /* stop forwarding log packets! */ - log_remove_callback(gdb_log_callback, connection); - - if (gdb_connection->ctrl_c) - { - signal = 0x2; - gdb_connection->ctrl_c = 0; - } - else - { - signal = gdb_last_signal(target); - } - - snprintf(sig_reply, 4, "T%2.2x", signal); - gdb_put_packet(connection, sig_reply, 3); - gdb_connection->frontend_state = TARGET_HALTED; - } + gdb_frontend_halted(target, connection); break; - case TARGET_EVENT_GDB_PROGRAM: + case TARGET_EVENT_GDB_FLASH_ERASE_START: gdb_program_handler(target, event, connection->cmd_ctx); break; default: @@ -668,6 +677,7 @@ int gdb_new_connection(connection_t *connection) gdb_connection->vflash_image = NULL; gdb_connection->closed = 0; gdb_connection->busy = 0; + gdb_connection->noack_mode = 0; /* send ACK to GDB for debug request */ gdb_write(connection, "+", 1); @@ -675,6 +685,13 @@ int gdb_new_connection(connection_t *connection) /* output goes through gdb connection */ command_set_output_handler(connection->cmd_ctx, gdb_output, connection); + /* we must remove all breakpoints registered to the target as a previous + * GDB session could leave dangling breakpoints if e.g. communication + * timed out. + */ + breakpoint_clear_target(gdb_service->target); + watchpoint_clear_target(gdb_service->target); + /* register callback to be informed about target events */ target_register_event_callback(gdb_target_callback_event_handler, connection); @@ -694,7 +711,13 @@ int gdb_new_connection(connection_t *connection) * instantaneous and thus avoiding annoying timeout problems during * connect. */ - gdb_service->target->type->halt(gdb_service->target); + target_halt(gdb_service->target); + /* FIX!!!! could extended-remote work better here? + * + * wait a tiny bit for halted state or we just continue. The + * GDB register packet will then contain garbage + */ + target_wait_state(gdb_service->target, TARGET_HALTED, 500); /* remove the initial ACK from the incoming buffer */ if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK) @@ -732,7 +755,7 @@ int gdb_connection_closed(connection_t *connection) } else { - ERROR("BUG: connection->priv == NULL"); + LOG_ERROR("BUG: connection->priv == NULL"); } target_unregister_event_callback(gdb_target_callback_event_handler, connection); @@ -787,7 +810,7 @@ void gdb_target_to_str(target_t *target, char *tstr, char *str) if (str_len % 2) { - ERROR("BUG: gdb value with uneven number of characters encountered"); + LOG_ERROR("BUG: gdb value with uneven number of characters encountered"); exit(-1); } @@ -809,7 +832,7 @@ int gdb_get_registers_packet(connection_t *connection, target_t *target, char* p int i; #ifdef _DEBUG_GDB_IO_ - DEBUG("-"); + LOG_DEBUG("-"); #endif if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK) @@ -835,7 +858,7 @@ int gdb_get_registers_packet(connection_t *connection, target_t *target, char* p { char *reg_packet_p; reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2); - DEBUG("reg_packet: %s", reg_packet_p); + LOG_DEBUG("reg_packet: %s", reg_packet_p); free(reg_packet_p); } #endif @@ -857,7 +880,7 @@ int gdb_set_registers_packet(connection_t *connection, target_t *target, char *p char *packet_p; #ifdef _DEBUG_GDB_IO_ - DEBUG("-"); + LOG_DEBUG("-"); #endif /* skip command character */ @@ -866,7 +889,7 @@ int gdb_set_registers_packet(connection_t *connection, target_t *target, char *p if (packet_size % 2) { - WARNING("GDB set_registers packet with uneven characters received, dropping connection"); + LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -894,7 +917,7 @@ int gdb_set_registers_packet(connection_t *connection, target_t *target, char *p arch_type = register_get_arch_type(reg_list[i]->arch_type); if (arch_type == NULL) { - ERROR("BUG: encountered unregistered arch type"); + LOG_ERROR("BUG: encountered unregistered arch type"); exit(-1); } arch_type->set(reg_list[i], bin_buf); @@ -923,7 +946,7 @@ int gdb_get_register_packet(connection_t *connection, target_t *target, char *pa int retval; #ifdef _DEBUG_GDB_IO_ - DEBUG("-"); + LOG_DEBUG("-"); #endif if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK) @@ -933,7 +956,7 @@ int gdb_get_register_packet(connection_t *connection, target_t *target, char *pa if (reg_list_size <= reg_num) { - ERROR("gdb requested a non-existing register"); + LOG_ERROR("gdb requested a non-existing register"); exit(-1); } @@ -960,7 +983,7 @@ int gdb_set_register_packet(connection_t *connection, target_t *target, char *pa int retval; reg_arch_type_t *arch_type; - DEBUG("-"); + LOG_DEBUG("-"); if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK) { @@ -969,13 +992,13 @@ int gdb_set_register_packet(connection_t *connection, target_t *target, char *pa if (reg_list_size < reg_num) { - ERROR("gdb requested a non-existing register"); + LOG_ERROR("gdb requested a non-existing register"); return ERROR_SERVER_REMOTE_CLOSED; } if (*separator != '=') { - ERROR("GDB 'set register packet', but no '=' following the register number"); + LOG_ERROR("GDB 'set register packet', but no '=' following the register number"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -991,7 +1014,7 @@ int gdb_set_register_packet(connection_t *connection, target_t *target, char *pa arch_type = register_get_arch_type(reg_list[reg_num]->arch_type); if (arch_type == NULL) { - ERROR("BUG: encountered unregistered arch type"); + LOG_ERROR("BUG: encountered unregistered arch type"); exit(-1); } arch_type->set(reg_list[reg_num], bin_buf); @@ -1023,7 +1046,7 @@ int gdb_error(connection_t *connection, int retval) break; default: /* This could be that the target reset itself. */ - ERROR("unexpected error %i", retval); + LOG_ERROR("unexpected error %i", retval); gdb_send_error(connection, EFAULT); break; } @@ -1054,7 +1077,7 @@ int gdb_read_memory_packet(connection_t *connection, target_t *target, char *pac if (*separator != ',') { - ERROR("incomplete read memory packet received, dropping connection"); + LOG_ERROR("incomplete read memory packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1062,7 +1085,7 @@ int gdb_read_memory_packet(connection_t *connection, target_t *target, char *pac buffer = malloc(len); - DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len); + LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len); retval = target_read_buffer(target, addr, len, buffer); @@ -1128,7 +1151,7 @@ int gdb_write_memory_packet(connection_t *connection, target_t *target, char *pa if (*separator != ',') { - ERROR("incomplete write memory packet received, dropping connection"); + LOG_ERROR("incomplete write memory packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1136,13 +1159,13 @@ int gdb_write_memory_packet(connection_t *connection, target_t *target, char *pa if (*(separator++) != ':') { - ERROR("incomplete write memory packet received, dropping connection"); + LOG_ERROR("incomplete write memory packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } buffer = malloc(len); - DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len); + LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len); for (i=0; i 1) { @@ -1234,14 +1258,16 @@ void gdb_step_continue_packet(connection_t *connection, target_t *target, char * if (packet[0] == 'c') { - DEBUG("continue"); - target->type->resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */ + LOG_DEBUG("continue"); + target_invoke_script(connection->cmd_ctx, target, "pre_resume"); + retval=target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */ } else if (packet[0] == 's') { - DEBUG("step"); - target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */ + LOG_DEBUG("step"); + retval=target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */ } + return retval; } int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size) @@ -1254,7 +1280,7 @@ int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *separator; int retval; - DEBUG("-"); + LOG_DEBUG("-"); type = strtoul(packet + 1, &separator, 16); @@ -1268,10 +1294,15 @@ int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, wp_type = WPT_READ; else if (type == 4) /* access watchpoint */ wp_type = WPT_ACCESS; + + if (gdb_breakpoint_override&&((bp_type==BKPT_SOFT)||(bp_type==BKPT_HARD))) + { + bp_type=gdb_breakpoint_override_type; + } if (*separator != ',') { - ERROR("incomplete breakpoint/watchpoint packet received, dropping connection"); + LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1279,7 +1310,7 @@ int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, if (*separator != ',') { - ERROR("incomplete breakpoint/watchpoint packet received, dropping connection"); + LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1421,10 +1452,29 @@ int gdb_calc_blocksize(flash_bank_t *bank) return block_size; } +static int compare_bank (const void * a, const void * b) +{ + flash_bank_t *b1, *b2; + b1=*((flash_bank_t **)a); + b2=*((flash_bank_t **)b); + + if (b1->base==b2->base) + { + return 0; + } else if (b1->base>b2->base) + { + return 1; + } else + { + return -1; + } +} + int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size) { command_context_t *cmd_ctx = connection->cmd_ctx; - + gdb_connection_t *gdb_connection = connection->priv; + if (strstr(packet, "qRcmd,")) { if (packet_size > 6) @@ -1442,9 +1492,9 @@ int gdb_query_packet(connection_t *connection, target_t *target, char *packet, i /* We want to print all debug output to GDB connection */ log_add_callback(gdb_log_callback, connection); - target_call_timer_callbacks(); + target_call_timer_callbacks_now(); command_run_line(cmd_ctx, cmd); - target_call_timer_callbacks(); + target_call_timer_callbacks_now(); log_remove_callback(gdb_log_callback, connection); free(cmd); } @@ -1469,7 +1519,7 @@ int gdb_query_packet(connection_t *connection, target_t *target, char *packet, i if (*separator != ',') { - ERROR("incomplete read memory packet received, dropping connection"); + LOG_ERROR("incomplete read memory packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1501,8 +1551,8 @@ int gdb_query_packet(connection_t *connection, target_t *target, char *packet, i int size = 0; xml_printf(&retval, &buffer, &pos, &size, - "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-", - (GDB_BUFFER_SIZE - 1), gdb_use_memory_map == 1 ? '+' : '-'); + "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+", + (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1)&&(flash_get_bank_count()>0)) ? '+' : '-'); if (retval != ERROR_OK) { @@ -1515,7 +1565,7 @@ int gdb_query_packet(connection_t *connection, target_t *target, char *packet, i return ERROR_OK; } - else if (strstr(packet, "qXfer:memory-map:read::")) + else if (strstr(packet, "qXfer:memory-map:read::")&&(flash_get_bank_count()>0)) { /* We get away with only specifying flash here. Regions that are not * specified are treated as if we provided no memory map(if not we @@ -1541,23 +1591,63 @@ int gdb_query_packet(connection_t *connection, target_t *target, char *packet, i length = strtoul(separator + 1, &separator, 16); xml_printf(&retval, &xml, &pos, &size, "\n"); - + + /* + sort banks in ascending order, we need to make non-flash memory be ram(or rather + read/write) by default for GDB. + GDB does not have a concept of non-cacheable read/write memory. + */ + flash_bank_t **banks=malloc(sizeof(flash_bank_t *)*flash_get_bank_count()); int i; + for (i=0; ibase) + { + xml_printf(&retval, &xml, &pos, &size, "\n", + ram_start, p->base-ram_start); + } + /* if device has uneven sector sizes, eg. str7, lpc * we pass the smallest sector size to gdb memory map */ blocksize = gdb_calc_blocksize(p); - + xml_printf(&retval, &xml, &pos, &size, "\n" \ "0x%x\n" \ "\n", \ p->base, p->size, blocksize); + ram_start=p->base+p->size; } + if (ram_start!=0) + { + xml_printf(&retval, &xml, &pos, &size, "\n", + ram_start, 0-ram_start); + } else + { + /* a flash chip could be at the very end of the 32 bit address space, in which case + ram_start will be precisely 0 */ + } + + free(banks); + banks = NULL; xml_printf(&retval, &xml, &pos, &size, "\n"); @@ -1616,11 +1706,17 @@ int gdb_query_packet(connection_t *connection, target_t *target, char *packet, i return retval; } - gdb_put_packet(connection, xml, strlen(xml) + 1); + gdb_put_packet(connection, xml, strlen(xml)); free(xml); return ERROR_OK; } + else if (strstr(packet, "QStartNoAckMode")) + { + gdb_connection->noack_mode = 1; + gdb_put_packet(connection, "OK", 2); + return ERROR_OK; + } gdb_put_packet(connection, "", 0); return ERROR_OK; @@ -1648,7 +1744,7 @@ int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int p char *parse = packet + 12; if (*parse == '\0') { - ERROR("incomplete vFlashErase packet received, dropping connection"); + LOG_ERROR("incomplete vFlashErase packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1656,7 +1752,7 @@ int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int p if (*(parse++) != ',' || *parse == '\0') { - ERROR("incomplete vFlashErase packet received, dropping connection"); + LOG_ERROR("incomplete vFlashErase packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1664,7 +1760,7 @@ int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int p if (*parse != '\0') { - ERROR("incomplete vFlashErase packet received, dropping connection"); + LOG_ERROR("incomplete vFlashErase packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } @@ -1673,7 +1769,7 @@ int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int p flash_set_dirty(); /* perform any target specific operations before the erase */ - target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_PROGRAM); + target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_START); /* perform erase */ if ((result = flash_erase_address_range(gdb_service->target, addr, length)) != ERROR_OK) @@ -1682,7 +1778,7 @@ int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int p * treat a failed erase as an I/O error */ gdb_send_error(connection, EIO); - ERROR("flash_erase returned %i", result); + LOG_ERROR("flash_erase returned %i", result); } else gdb_put_packet(connection, "OK", 2); @@ -1698,13 +1794,13 @@ int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int p if (*parse == '\0') { - ERROR("incomplete vFlashErase packet received, dropping connection"); + LOG_ERROR("incomplete vFlashErase packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } addr = strtoul(parse, &parse, 16); if (*(parse++) != ':') { - ERROR("incomplete vFlashErase packet received, dropping connection"); + LOG_ERROR("incomplete vFlashErase packet received, dropping connection"); return ERROR_SERVER_REMOTE_CLOSED; } length = packet_size - (parse - packet); @@ -1739,7 +1835,7 @@ int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int p } else { - DEBUG("wrote %u bytes from vFlash image to flash", written); + LOG_DEBUG("wrote %u bytes from vFlash image to flash", written); gdb_put_packet(connection, "OK", 2); } @@ -1759,15 +1855,17 @@ int gdb_detach(connection_t *connection, target_t *target) switch( detach_mode ) { case GDB_DETACH_RESUME: - target->type->resume(target, 1, 0, 1, 0); + target_invoke_script(connection->cmd_ctx, target, "pre_resume"); + target_resume(target, 1, 0, 1, 0); break; case GDB_DETACH_RESET: - target_process_reset(connection->cmd_ctx); + /* FIX?? make this configurable?? */ + target_process_reset(connection->cmd_ctx, RESET_HALT); break; case GDB_DETACH_HALT: - target->type->halt(target); + target_halt(target); break; case GDB_DETACH_NOTHING: @@ -1794,11 +1892,22 @@ static void gdb_log_callback(void *priv, const char *file, int line, gdb_output_con(connection, string); } +/* Do not allocate this on the stack */ +char gdb_packet_buffer[GDB_BUFFER_SIZE]; + +static void gdb_sig_halted(connection_t *connection) +{ + char sig_reply[4]; + snprintf(sig_reply, 4, "T%2.2x", 2); + gdb_put_packet(connection, sig_reply, 3); + +} + int gdb_input_inner(connection_t *connection) { gdb_service_t *gdb_service = connection->service->priv; target_t *target = gdb_service->target; - char packet[GDB_BUFFER_SIZE]; + char *packet=gdb_packet_buffer; int packet_size; int retval; gdb_connection_t *gdb_con = connection->priv; @@ -1816,7 +1925,7 @@ int gdb_input_inner(connection_t *connection) /* terminate with zero */ packet[packet_size] = 0; - DEBUG("received packet: '%s'", packet); + LOG_DEBUG("received packet: '%s'", packet); if (packet_size > 0) { @@ -1829,6 +1938,7 @@ int gdb_input_inner(connection_t *connection) gdb_put_packet(connection, NULL, 0); break; case 'q': + case 'Q': retval = gdb_query_packet(connection, target, packet, packet_size); break; case 'g': @@ -1859,12 +1969,27 @@ int gdb_input_inner(connection_t *connection) case 'c': case 's': { - /* We're running/stepping, in which case we can - * forward log output until the target is halted */ - gdb_connection_t *gdb_con = connection->priv; - gdb_con->frontend_state = TARGET_RUNNING; - log_add_callback(gdb_log_callback, connection); - gdb_step_continue_packet(connection, target, packet, packet_size); + if (target->state != TARGET_HALTED) + { + /* If the target isn't in the halted state, then we can't + * step/continue. This might be early setup, etc. + */ + gdb_sig_halted(connection); + } else + { + /* We're running/stepping, in which case we can + * forward log output until the target is halted + */ + gdb_connection_t *gdb_con = connection->priv; + gdb_con->frontend_state = TARGET_RUNNING; + log_add_callback(gdb_log_callback, connection); + int retval=gdb_step_continue_packet(connection, target, packet, packet_size); + if (retval!=ERROR_OK) + { + /* we'll never receive a halted condition... issue a false one.. */ + gdb_frontend_halted(target, connection); + } + } } break; case 'v': @@ -1890,11 +2015,13 @@ int gdb_input_inner(connection_t *connection) break; case 'R': /* handle extended restart packet */ - target_process_reset(connection->cmd_ctx); + breakpoint_clear_target(gdb_service->target); + watchpoint_clear_target(gdb_service->target); + command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %d", get_num_by_target(target)); break; default: /* ignore unkown packets */ - DEBUG("ignoring 0x%2.2x packet", packet[0]); + LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]); gdb_put_packet(connection, NULL, 0); break; } @@ -1908,7 +2035,7 @@ int gdb_input_inner(connection_t *connection) { if (target->state == TARGET_RUNNING) { - target->type->halt(target); + target_halt(target); gdb_con->ctrl_c = 0; } } @@ -1933,21 +2060,20 @@ int gdb_input(connection_t *connection) return ERROR_OK; } -int gdb_init() +int gdb_init(void) { gdb_service_t *gdb_service; - target_t *target = targets; - int i = 0; + target_t *target = all_targets; if (!target) { - WARNING("no gdb ports allocated as no target has been specified"); + LOG_WARNING("no gdb ports allocated as no target has been specified"); return ERROR_OK; } if (gdb_port == 0) { - WARNING("no gdb port specified, using default port 3333"); + LOG_WARNING("no gdb port specified, using default port 3333"); gdb_port = 3333; } @@ -1955,16 +2081,21 @@ int gdb_init() { char service_name[8]; - snprintf(service_name, 8, "gdb-%2.2i", i); + snprintf(service_name, 8, "gdb-%2.2i", target->target_number); gdb_service = malloc(sizeof(gdb_service_t)); gdb_service->target = target; - add_service("gdb", CONNECTION_GDB, gdb_port + i, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service); + add_service("gdb", CONNECTION_GDB, + gdb_port + target->target_number, + 1, gdb_new_connection, gdb_input, + gdb_connection_closed, + gdb_service); - DEBUG("gdb service for target %s at port %i", target->type->name, gdb_port + i); + LOG_DEBUG("gdb service for target %s at port %i", + target->type->name, + gdb_port + target->target_number); - i++; target = target->next; } @@ -2010,7 +2141,7 @@ int handle_gdb_detach_command(struct command_context_s *cmd_ctx, char *cmd, char } } - WARNING("invalid gdb_detach configuration directive: %s", args[0]); + LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]); return ERROR_OK; } @@ -2030,7 +2161,7 @@ int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, } } - WARNING("invalid gdb_memory_map configuration directive: %s", args[0]); + LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]); return ERROR_OK; } @@ -2050,7 +2181,7 @@ int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cm } } - WARNING("invalid gdb_memory_map configuration directive: %s", args[0]); + LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]); return ERROR_OK; } @@ -2070,10 +2201,45 @@ int handle_gdb_report_data_abort_command(struct command_context_s *cmd_ctx, char } } - WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]); + LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]); + return ERROR_OK; +} + +/* daemon configuration command gdb_port */ +int handle_gdb_breakpoint_override_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) +{ + if (argc == 0) + { + + } else if (argc==1) + { + gdb_breakpoint_override = 1; + if (strcmp(args[0], "hard")==0) + { + gdb_breakpoint_override_type=BKPT_HARD; + } else if (strcmp(args[0], "soft")==0) + { + gdb_breakpoint_override_type=BKPT_SOFT; + } else if (strcmp(args[0], "disable") == 0) + { + gdb_breakpoint_override = 0; + } + } else + { + return ERROR_COMMAND_SYNTAX_ERROR; + } + if (gdb_breakpoint_override) + { + LOG_USER("force %s breakpoints", (gdb_breakpoint_override_type==BKPT_HARD)?"hard":"soft"); + } else + { + LOG_USER("breakpoint type is not overriden"); + } + return ERROR_OK; } + int gdb_register_commands(command_context_t *command_context) { register_command(command_context, NULL, "gdb_port", handle_gdb_port_command, @@ -2086,5 +2252,10 @@ int gdb_register_commands(command_context_t *command_context) COMMAND_CONFIG, ""); register_command(command_context, NULL, "gdb_report_data_abort", handle_gdb_report_data_abort_command, COMMAND_CONFIG, ""); + register_command(command_context, NULL, "gdb_breakpoint_override", handle_gdb_breakpoint_override_command, + COMMAND_EXEC, "hard/soft/disabled - force breakpoint type for gdb 'break' commands." + "The raison d'etre for this option is to support GDB GUI's without " + "a hard/soft breakpoint concept where the default OpenOCD behaviour " + "is not sufficient"); return ERROR_OK; }