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Diffstat (limited to 'libjava/classpath/lib/java/nio/ByteOrder.class')

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/*************************************************************************** * Copyright (C) 2011 by Broadcom Corporation * * Evan Hunter - ehunter@broadcom.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 * * (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., * * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "rtos.h" #include "target/target.h" #include "helper/log.h" #include "helper/binarybuffer.h" #include "server/gdb_server.h" /* RTOSs */ extern struct rtos_type FreeRTOS_rtos; extern struct rtos_type ThreadX_rtos; extern struct rtos_type eCos_rtos; extern struct rtos_type Linux_os; extern struct rtos_type ChibiOS_rtos; extern struct rtos_type embKernel_rtos; static struct rtos_type *rtos_types[] = { &ThreadX_rtos, &FreeRTOS_rtos, &eCos_rtos, &Linux_os, &ChibiOS_rtos, &embKernel_rtos, NULL }; int rtos_thread_packet(struct connection *connection, const char *packet, int packet_size); int rtos_smp_init(struct target *target) { if (target->rtos->type->smp_init) return target->rtos->type->smp_init(target); return ERROR_TARGET_INIT_FAILED; } static int os_alloc(struct target *target, struct rtos_type *ostype) { struct rtos *os = target->rtos = calloc(1, sizeof(struct rtos)); if (!os) return JIM_ERR; os->type = ostype; os->current_threadid = -1; os->current_thread = 0; os->symbols = NULL; os->target = target; /* RTOS drivers can override the packet handler in _create(). */ os->gdb_thread_packet = rtos_thread_packet; return JIM_OK; } static void os_free(struct target *target) { if (!target->rtos) return; if (target->rtos->symbols) free(target->rtos->symbols); free(target->rtos); target->rtos = NULL; } static int os_alloc_create(struct target *target, struct rtos_type *ostype) { int ret = os_alloc(target, ostype); if (JIM_OK == ret) { ret = target->rtos->type->create(target); if (ret != JIM_OK) os_free(target); } return ret; } int rtos_create(Jim_GetOptInfo *goi, struct target *target) { int x; char *cp; struct Jim_Obj *res; if (!goi->isconfigure && goi->argc != 0) { Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "NO PARAMS"); return JIM_ERR; } os_free(target); Jim_GetOpt_String(goi, &cp, NULL); if (0 == strcmp(cp, "auto")) { /* Auto detect tries to look up all symbols for each RTOS, * and runs the RTOS driver's _detect() function when GDB * finds all symbols for any RTOS. See rtos_qsymbol(). */ target->rtos_auto_detect = true; /* rtos_qsymbol() will iterate over all RTOSes. Allocate * target->rtos here, and set it to the first RTOS type. */ return os_alloc(target, rtos_types[0]); } for (x = 0; rtos_types[x]; x++) if (0 == strcmp(cp, rtos_types[x]->name)) return os_alloc_create(target, rtos_types[x]); Jim_SetResultFormatted(goi->interp, "Unknown RTOS type %s, try one of: ", cp); res = Jim_GetResult(goi->interp); for (x = 0; rtos_types[x]; x++) Jim_AppendStrings(goi->interp, res, rtos_types[x]->name, ", ", NULL); Jim_AppendStrings(goi->interp, res, " or auto", NULL); return JIM_ERR; } int gdb_thread_packet(struct connection *connection, char const *packet, int packet_size) { struct target *target = get_target_from_connection(connection); if (target->rtos == NULL) return rtos_thread_packet(connection, packet, packet_size); /* thread not *found*/ return target->rtos->gdb_thread_packet(connection, packet, packet_size); } static symbol_table_elem_t *next_symbol(struct rtos *os, char *cur_symbol, uint64_t cur_addr) { symbol_table_elem_t *s; if (!os->symbols) os->type->get_symbol_list_to_lookup(&os->symbols); if (!cur_symbol[0]) return &os->symbols[0]; for (s = os->symbols; s->symbol_name; s++) if (!strcmp(s->symbol_name, cur_symbol)) { s->address = cur_addr; s++; return s; } return NULL; } /* searches for 'symbol' in the lookup table for 'os' and returns TRUE, * if 'symbol' is not declared optional */ static bool is_symbol_mandatory(const struct rtos *os, const char *symbol) { for (symbol_table_elem_t *s = os->symbols; s->symbol_name; ++s) { if (!strcmp(s->symbol_name, symbol)) return !s->optional; } return false; } /* rtos_qsymbol() processes and replies to all qSymbol packets from GDB. * * GDB sends a qSymbol:: packet (empty address, empty name) to notify * that it can now answer qSymbol::hexcodedname queries, to look up symbols. * * If the qSymbol packet has no address that means GDB did not find the * symbol, in which case auto-detect will move on to try the next RTOS. * * rtos_qsymbol() then calls the next_symbol() helper function, which * iterates over symbol names for the current RTOS until it finds the * symbol in the received GDB packet, and then returns the next entry * in the list of symbols. * * If GDB replied about the last symbol for the RTOS and the RTOS was * specified explicitly, then no further symbol lookup is done. When * auto-detecting, the RTOS driver _detect() function must return success. * * rtos_qsymbol() returns 1 if an RTOS has been detected, or 0 otherwise. */ int rtos_qsymbol(struct connection *connection, char const *packet, int packet_size) { int rtos_detected = 0; uint64_t addr = 0; size_t reply_len; char reply[GDB_BUFFER_SIZE], cur_sym[GDB_BUFFER_SIZE / 2] = ""; symbol_table_elem_t *next_sym = NULL; struct target *target = get_target_from_connection(connection); struct rtos *os = target->rtos; reply_len = sprintf(reply, "OK"); if (!os) goto done; /* Decode any symbol name in the packet*/ int len = unhexify(cur_sym, strchr(packet + 8, ':') + 1, strlen(strchr(packet + 8, ':') + 1)); cur_sym[len] = 0; if ((strcmp(packet, "qSymbol::") != 0) && /* GDB is not offering symbol lookup for the first time */ (!sscanf(packet, "qSymbol:%" SCNx64 ":", &addr)) && /* GDB did not find an address for a symbol */ is_symbol_mandatory(os, cur_sym)) { /* the symbol is mandatory for this RTOS */ /* GDB could not find an address for the previous symbol */ if (!target->rtos_auto_detect) { LOG_WARNING("RTOS %s not detected. (GDB could not find symbol \'%s\')", os->type->name, cur_sym); goto done; } else { /* Autodetecting RTOS - try next RTOS */ if (!rtos_try_next(target)) { LOG_WARNING("No RTOS could be auto-detected!"); goto done; } /* Next RTOS selected - invalidate current symbol */ cur_sym[0] = '\x00'; } } next_sym = next_symbol(os, cur_sym, addr); if (!next_sym->symbol_name) { /* No more symbols need looking up */ if (!target->rtos_auto_detect) { rtos_detected = 1; goto done; } if (os->type->detect_rtos(target)) { LOG_INFO("Auto-detected RTOS: %s", os->type->name); rtos_detected = 1; goto done; } else { LOG_WARNING("No RTOS could be auto-detected!"); goto done; } } if (8 + (strlen(next_sym->symbol_name) * 2) + 1 > sizeof(reply)) { LOG_ERROR("ERROR: RTOS symbol '%s' name is too long for GDB!", next_sym->symbol_name); goto done; } reply_len = snprintf(reply, sizeof(reply), "qSymbol:"); reply_len += hexify(reply + reply_len, next_sym->symbol_name, 0, sizeof(reply) - reply_len); done: gdb_put_packet(connection, reply, reply_len); return rtos_detected; } int rtos_thread_packet(struct connection *connection, char const *packet, int packet_size) { struct target *target = get_target_from_connection(connection); if (strncmp(packet, "qThreadExtraInfo,", 17) == 0) { if ((target->rtos != NULL) && (target->rtos->thread_details != NULL) && (target->rtos->thread_count != 0)) { threadid_t threadid = 0; int found = -1; sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid); if ((target->rtos != NULL) && (target->rtos->thread_details != NULL)) { int thread_num; for (thread_num = 0; thread_num < target->rtos->thread_count; thread_num++) { if (target->rtos->thread_details[thread_num].threadid == threadid) { if (target->rtos->thread_details[thread_num].exists) found = thread_num; } } } if (found == -1) { gdb_put_packet(connection, "E01", 3); /* thread not found */ return ERROR_OK; } struct thread_detail *detail = &target->rtos->thread_details[found]; int str_size = 0; if (detail->display_str != NULL) str_size += strlen(detail->display_str); if (detail->thread_name_str != NULL) str_size += strlen(detail->thread_name_str); if (detail->extra_info_str != NULL) str_size += strlen(detail->extra_info_str); char *tmp_str = malloc(str_size + 7); char *tmp_str_ptr = tmp_str; if (detail->display_str != NULL) tmp_str_ptr += sprintf(tmp_str_ptr, "%s", detail->display_str); if (detail->thread_name_str != NULL) { if (tmp_str_ptr != tmp_str) tmp_str_ptr += sprintf(tmp_str_ptr, " : "); tmp_str_ptr += sprintf(tmp_str_ptr, "%s", detail->thread_name_str); } if (detail->extra_info_str != NULL) { if (tmp_str_ptr != tmp_str) tmp_str_ptr += sprintf(tmp_str_ptr, " : "); tmp_str_ptr += sprintf(tmp_str_ptr, " : %s", detail->extra_info_str); } assert(strlen(tmp_str) == (size_t) (tmp_str_ptr - tmp_str)); char *hex_str = malloc(strlen(tmp_str) * 2 + 1); int pkt_len = hexify(hex_str, tmp_str, 0, strlen(tmp_str) * 2 + 1); gdb_put_packet(connection, hex_str, pkt_len); free(hex_str); free(tmp_str); return ERROR_OK; } gdb_put_packet(connection, "", 0); return ERROR_OK; } else if (strncmp(packet, "qSymbol", 7) == 0) { if (rtos_qsymbol(connection, packet, packet_size) == 1) { target->rtos_auto_detect = false; target->rtos->type->create(target); target->rtos->type->update_threads(target->rtos); } return ERROR_OK; } else if (strncmp(packet, "qfThreadInfo", 12) == 0) { int i; if (target->rtos != NULL) { if (target->rtos->thread_count == 0) { gdb_put_packet(connection, "l", 1); } else { /*thread id are 16 char +1 for ',' */ char *out_str = malloc(17 * target->rtos->thread_count + 1); char *tmp_str = out_str; for (i = 0; i < target->rtos->thread_count; i++) { tmp_str += sprintf(tmp_str, "%c%016" PRIx64, i == 0 ? 'm' : ',', target->rtos->thread_details[i].threadid); } gdb_put_packet(connection, out_str, strlen(out_str)); free(out_str); } } else gdb_put_packet(connection, "l", 1); return ERROR_OK; } else if (strncmp(packet, "qsThreadInfo", 12) == 0) { gdb_put_packet(connection, "l", 1); return ERROR_OK; } else if (strncmp(packet, "qAttached", 9) == 0) { gdb_put_packet(connection, "1", 1); return ERROR_OK; } else if (strncmp(packet, "qOffsets", 8) == 0) { char offsets[] = "Text=0;Data=0;Bss=0"; gdb_put_packet(connection, offsets, sizeof(offsets)-1); return ERROR_OK; } else if (strncmp(packet, "qCRC:", 5) == 0) { /* make sure we check this before "qC" packet below * otherwise it gets incorrectly handled */ return GDB_THREAD_PACKET_NOT_CONSUMED; } else if (strncmp(packet, "qC", 2) == 0) { if (target->rtos != NULL) { char buffer[19]; int size; size = snprintf(buffer, 19, "QC%016" PRIx64, target->rtos->current_thread); gdb_put_packet(connection, buffer, size); } else gdb_put_packet(connection, "QC0", 3); return ERROR_OK; } else if (packet[0] == 'T') { /* Is thread alive? */ threadid_t threadid; int found = -1; sscanf(packet, "T%" SCNx64, &threadid); if ((target->rtos != NULL) && (target->rtos->thread_details != NULL)) { int thread_num; for (thread_num = 0; thread_num < target->rtos->thread_count; thread_num++) { if (target->rtos->thread_details[thread_num].threadid == threadid) { if (target->rtos->thread_details[thread_num].exists) found = thread_num; } } } if (found != -1) gdb_put_packet(connection, "OK", 2); /* thread alive */ else gdb_put_packet(connection, "E01", 3); /* thread not found */ return ERROR_OK; } else if (packet[0] == 'H') { /* Set current thread ( 'c' for step and continue, 'g' for * all other operations ) */ if ((packet[1] == 'g') && (target->rtos != NULL)) sscanf(packet, "Hg%16" SCNx64, &target->rtos->current_threadid); gdb_put_packet(connection, "OK", 2); return ERROR_OK; } return GDB_THREAD_PACKET_NOT_CONSUMED; } int rtos_get_gdb_reg_list(struct connection *connection) { struct target *target = get_target_from_connection(connection); int64_t current_threadid = target->rtos->current_threadid; if ((target->rtos != NULL) && (current_threadid != -1) && (current_threadid != 0) && ((current_threadid != target->rtos->current_thread) || (target->smp))) { /* in smp several current thread are possible */ char *hex_reg_list; target->rtos->type->get_thread_reg_list(target->rtos, current_threadid, &hex_reg_list); if (hex_reg_list != NULL) { gdb_put_packet(connection, hex_reg_list, strlen(hex_reg_list)); free(hex_reg_list); return ERROR_OK; } } return ERROR_FAIL; } int rtos_generic_stack_read(struct target *target, const struct rtos_register_stacking *stacking, int64_t stack_ptr, char **hex_reg_list) { int list_size = 0; char *tmp_str_ptr; int64_t new_stack_ptr; int i; int retval; if (stack_ptr == 0) { LOG_ERROR("Error: null stack pointer in thread"); return -5; } /* Read the stack */ uint8_t *stack_data = malloc(stacking->stack_registers_size); uint32_t address = stack_ptr; if (stacking->stack_growth_direction == 1) address -= stacking->stack_registers_size; retval = target_read_buffer(target, address, stacking->stack_registers_size, stack_data); if (retval != ERROR_OK) { free(stack_data); LOG_ERROR("Error reading stack frame from thread"); return retval; } #if 0 LOG_OUTPUT("Stack Data :"); for (i = 0; i < stacking->stack_registers_size; i++) LOG_OUTPUT("%02X", stack_data[i]); LOG_OUTPUT("\r\n"); #endif for (i = 0; i < stacking->num_output_registers; i++) list_size += stacking->register_offsets[i].width_bits/8; *hex_reg_list = malloc(list_size*2 + 1); tmp_str_ptr = *hex_reg_list; new_stack_ptr = stack_ptr - stacking->stack_growth_direction * stacking->stack_registers_size; if (stacking->stack_alignment != 0) { /* Align new stack pointer to x byte boundary */ new_stack_ptr = (new_stack_ptr & (~((int64_t) stacking->stack_alignment - 1))) + ((stacking->stack_growth_direction == -1) ? stacking->stack_alignment : 0); } for (i = 0; i < stacking->num_output_registers; i++) { int j; for (j = 0; j < stacking->register_offsets[i].width_bits/8; j++) { if (stacking->register_offsets[i].offset == -1) tmp_str_ptr += sprintf(tmp_str_ptr, "%02x", 0); else if (stacking->register_offsets[i].offset == -2) tmp_str_ptr += sprintf(tmp_str_ptr, "%02x", ((uint8_t *)&new_stack_ptr)[j]); else tmp_str_ptr += sprintf(tmp_str_ptr, "%02x", stack_data[stacking->register_offsets[i].offset + j]); } } free(stack_data); /* LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list); */ return ERROR_OK; } int rtos_try_next(struct target *target) { struct rtos *os = target->rtos; struct rtos_type **type = rtos_types; if (!os) return 0; while (*type && os->type != *type) type++; if (!*type || !*(++type)) return 0; os->type = *type; if (os->symbols) { free(os->symbols); os->symbols = NULL; } return 1; } int rtos_update_threads(struct target *target) { if ((target->rtos != NULL) && (target->rtos->type != NULL)) target->rtos->type->update_threads(target->rtos); return ERROR_OK; } void rtos_free_threadlist(struct rtos *rtos) { if (rtos->thread_details) { int j; for (j = 0; j < rtos->thread_count; j++) { struct thread_detail *current_thread = &rtos->thread_details[j]; free(current_thread->display_str); free(current_thread->thread_name_str); free(current_thread->extra_info_str); } free(rtos->thread_details); rtos->thread_details = NULL; rtos->thread_count = 0; } }


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