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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [gdbserver/] [inferiors.c] - Rev 291
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/* Inferior process information for the remote server for GDB. Copyright (C) 2002, 2005, 2007, 2008 Free Software Foundation, Inc. Contributed by MontaVista Software. This file is part of GDB. 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 3 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, see <http://www.gnu.org/licenses/>. */ #include <stdlib.h> #include "server.h" struct thread_info { struct inferior_list_entry entry; void *target_data; void *regcache_data; unsigned int gdb_id; }; struct inferior_list all_threads; struct inferior_list all_dlls; int dlls_changed; struct thread_info *current_inferior; #define get_thread(inf) ((struct thread_info *)(inf)) #define get_dll(inf) ((struct dll_info *)(inf)) void add_inferior_to_list (struct inferior_list *list, struct inferior_list_entry *new_inferior) { new_inferior->next = NULL; if (list->tail != NULL) list->tail->next = new_inferior; else list->head = new_inferior; list->tail = new_inferior; } void for_each_inferior (struct inferior_list *list, void (*action) (struct inferior_list_entry *)) { struct inferior_list_entry *cur = list->head, *next; while (cur != NULL) { next = cur->next; (*action) (cur); cur = next; } } void remove_inferior (struct inferior_list *list, struct inferior_list_entry *entry) { struct inferior_list_entry **cur; if (list->head == entry) { list->head = entry->next; if (list->tail == entry) list->tail = list->head; return; } cur = &list->head; while (*cur && (*cur)->next != entry) cur = &(*cur)->next; if (*cur == NULL) return; (*cur)->next = entry->next; if (list->tail == entry) list->tail = *cur; } void add_thread (unsigned long thread_id, void *target_data, unsigned int gdb_id) { struct thread_info *new_thread = malloc (sizeof (*new_thread)); memset (new_thread, 0, sizeof (*new_thread)); new_thread->entry.id = thread_id; add_inferior_to_list (&all_threads, & new_thread->entry); if (current_inferior == NULL) current_inferior = new_thread; new_thread->target_data = target_data; set_inferior_regcache_data (new_thread, new_register_cache ()); new_thread->gdb_id = gdb_id; } unsigned int thread_id_to_gdb_id (unsigned long thread_id) { struct inferior_list_entry *inf = all_threads.head; while (inf != NULL) { struct thread_info *thread = get_thread (inf); if (inf->id == thread_id) return thread->gdb_id; inf = inf->next; } return 0; } unsigned int thread_to_gdb_id (struct thread_info *thread) { return thread->gdb_id; } struct thread_info * gdb_id_to_thread (unsigned int gdb_id) { struct inferior_list_entry *inf = all_threads.head; while (inf != NULL) { struct thread_info *thread = get_thread (inf); if (thread->gdb_id == gdb_id) return thread; inf = inf->next; } return NULL; } unsigned long gdb_id_to_thread_id (unsigned int gdb_id) { struct thread_info *thread = gdb_id_to_thread (gdb_id); return thread ? thread->entry.id : 0; } static void free_one_thread (struct inferior_list_entry *inf) { struct thread_info *thread = get_thread (inf); free_register_cache (inferior_regcache_data (thread)); free (thread); } void remove_thread (struct thread_info *thread) { remove_inferior (&all_threads, (struct inferior_list_entry *) thread); free_one_thread (&thread->entry); } struct inferior_list_entry * find_inferior (struct inferior_list *list, int (*func) (struct inferior_list_entry *, void *), void *arg) { struct inferior_list_entry *inf = list->head; while (inf != NULL) { if ((*func) (inf, arg)) return inf; inf = inf->next; } return NULL; } struct inferior_list_entry * find_inferior_id (struct inferior_list *list, unsigned long id) { struct inferior_list_entry *inf = list->head; while (inf != NULL) { if (inf->id == id) return inf; inf = inf->next; } return NULL; } void * inferior_target_data (struct thread_info *inferior) { return inferior->target_data; } void set_inferior_target_data (struct thread_info *inferior, void *data) { inferior->target_data = data; } void * inferior_regcache_data (struct thread_info *inferior) { return inferior->regcache_data; } void set_inferior_regcache_data (struct thread_info *inferior, void *data) { inferior->regcache_data = data; } static void free_one_dll (struct inferior_list_entry *inf) { struct dll_info *dll = get_dll (inf); if (dll->name != NULL) free (dll->name); free (dll); } /* Find a DLL with the same name and/or base address. A NULL name in the key is ignored; so is an all-ones base address. */ static int match_dll (struct inferior_list_entry *inf, void *arg) { struct dll_info *iter = (void *) inf; struct dll_info *key = arg; if (key->base_addr != ~(CORE_ADDR) 0 && iter->base_addr == key->base_addr) return 1; else if (key->name != NULL && iter->name != NULL && strcmp (key->name, iter->name) == 0) return 1; return 0; } /* Record a newly loaded DLL at BASE_ADDR. */ void loaded_dll (const char *name, CORE_ADDR base_addr) { struct dll_info *new_dll = malloc (sizeof (*new_dll)); memset (new_dll, 0, sizeof (*new_dll)); new_dll->entry.id = -1; new_dll->name = strdup (name); new_dll->base_addr = base_addr; add_inferior_to_list (&all_dlls, &new_dll->entry); dlls_changed = 1; } /* Record that the DLL with NAME and BASE_ADDR has been unloaded. */ void unloaded_dll (const char *name, CORE_ADDR base_addr) { struct dll_info *dll; struct dll_info key_dll; /* Be careful not to put the key DLL in any list. */ key_dll.name = (char *) name; key_dll.base_addr = base_addr; dll = (void *) find_inferior (&all_dlls, match_dll, &key_dll); remove_inferior (&all_dlls, &dll->entry); free_one_dll (&dll->entry); dlls_changed = 1; } #define clear_list(LIST) \ do { (LIST)->head = (LIST)->tail = NULL; } while (0) void clear_inferiors (void) { for_each_inferior (&all_threads, free_one_thread); for_each_inferior (&all_dlls, free_one_dll); clear_list (&all_threads); clear_list (&all_dlls); } /* Two utility functions for a truly degenerate inferior_list: a simple PID listing. */ void add_pid_to_list (struct inferior_list *list, unsigned long pid) { struct inferior_list_entry *new_entry; new_entry = malloc (sizeof (struct inferior_list_entry)); new_entry->id = pid; add_inferior_to_list (list, new_entry); } int pull_pid_from_list (struct inferior_list *list, unsigned long pid) { struct inferior_list_entry *new_entry; new_entry = find_inferior_id (list, pid); if (new_entry == NULL) return 0; else { remove_inferior (list, new_entry); free (new_entry); return 1; } }
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