old-cross-binutils/gdb/gdbserver/inferiors.c
Kwok Yeung d26e3629bb 2011-07-22 Kwok Cheung Yeung <kcy@codesourcery.com>
gdb/
	* defs.h: Add guard against inclusion in gdbserver.
	(struct ptid, ptid_t): Move to common/ptid.h.
	(xfree, xzalloc, xasprintf, xvasprintf, xstrprintf, xstrvprintf,
	xsnprintf, internal_error): Move to common/common-utils.h.
	(nomem): Delete.
	* gdb_assert.h: Move into common/ sub-directory.
	* gdb_locale.h: Ditto.
	* gdb_dirent.h: Ditto.
	* inferior.h (minus_one_ptid, null_ptid, ptid_build, pid_to_ptid,
	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal, ptid_is_pid):
	Move into common/ptid.h.
	* xml-support.c (xml_escape_text): Move into common/xml-utils.c.
	(gdb_xml_create_parser_and_cleanup_1, xml_fetch_context_from_file):
	Change nomem to malloc_failure.
	* xml-support.h (xml_escape_text): Move into common/xml-utils.h.
	* utils.c (nomem): Rename to malloc_failure.
	(xmalloc, xzalloc, xrealloc, xcalloc, xfree, xstrprintf, xasprintf,
	xvasprintf, xstrvprintf, xsnprintf): Move to common/common-utils.c.
	(gdb_buildargv): Change nomem to malloc_failure.
	* infrun.c (null_ptid, minus_one_ptid, ptid_build, pid_to_ptid,
	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal,
	ptid_is_pid): Move into common/ptid.c.
	(initialize_infrun): Delete initialization of null_ptid and
	minus_one_ptid.
	* linux-nat.c (linux_nat_xfer_osdata): Defer to
	linux_common_xfer_osdata.
	* Makefile.in (SFILES): Add common/common-utils.c, common/xml-utils.c,
	common/ptid.c and common/buffer.c.
	(HFILES_NO_SRCDIR): Add common/common-utils.h, common/xml-utils.h,
	common/ptid.h, common/buffer.h and common/linux-osdata.h.
	(COMMON_OBS): Add xml-utils.o, common-utils.o, buffer.o and ptid.o.
	(common-utils.o, xml-utils.o, ptid.o, buffer.o, linux-osdata.o): New
	rules.
	* common/gdb_assert.h: New.
	* common/gdb_dirent.h: New.
	* common/gdb_locale.h: New.
	* common/buffer.c: New.
	* common/buffer.h: New.
	* common/ptid.c: New.
	* common/ptid.h: New.
	* common/xml-utils.c: New.
	* common/xml-utils.h: New.
	* common/common-utils.c: New.
	* common/common-utils.h: New.
	* common/linux-osdata.c: New.
	* common/linux-osdata.h: New.
	* config/alpha/alpha-linux.mh (NATDEPFILES): Add linux-osdata.o.
	* config/arm/linux.mh (NATDEPFILES): Ditto.
	* config/i386/linux.mh (NATDEPFILES): Ditto.
	* config/i386/linux64.mh (NATDEPFILES): Ditto.
	* config/ia64/linux.mh (NATDEPFILES): Ditto.
	* config/m32r/linux.mh (NATDEPFILES): Ditto.
	* config/m68k/linux.mh (NATDEPFILES): Ditto.
	* config/mips/linux.mh (NATDEPFILES): Ditto.
	* config/pa/linux.mh (NATDEPFILES): Ditto.
	* config/powerpc/linux.mh (NATDEPFILES): Ditto.
	* config/powerpc/ppc64-linux.mh (NATDEPFILES): Ditto.
	* config/s390/s390.mh (NATDEPFILES): Ditto.
	* config/sparc/linux.mh (NATDEPFILES): Ditto.
	* config/sparc/linux64.mh (NATDEPFILES): Ditto.
	* config/xtensa/linux.mh (NATDEPFILES): Ditto.

gdbserver/
	* linux-low.c (compare_ints, unique, list_threads, show_process,
	linux_core_of_thread): Delete.
	(linux_target_ops): Change linux_core_of_thread to
	linux_common_core_of_thread.
	(linux_qxfer_osdata): Defer to linux_common_xfer_osdata.
	* utils.c (malloc_failure): Change type of argument.
	(xmalloc, xrealloc, xcalloc, xsnprintf): Delete.
	* Makefile.in (SFILES): Add common/common-utils.c, common/xml-utils.c,
	common/linux-osdata.c, common/ptid.c and common/buffer.c.
	(OBS): Add xml-utils.o, common-utils.o, ptid.o and buffer.o.
	(IPA_OBJS): Add common-utils-ipa.o.
	(ptid_h, linux_osdata_h): New macros.
	(server_h): Add common/common-utils.h, common/xml-utils.h,
	common/buffer.h, common/gdb_assert.h, common/gdb_locale.h and
	common/ptid.h.
	(common-utils-ipa.o, common-utils.o, xml-utils.o, linux-osdata.o,
	ptid.o, buffer.o): New rules.
	(linux-low.o): Add common/linux-osdata.h as a dependency.
	* configure.srv (srv_tgtobj): Add linux-osdata.o to Linux targets.
	* configure.ac: Add AC_HEADER_DIRENT check.
	* config.in: Regenerate.
	* configure: Regenerate.
	* remote-utils.c (xml_escape_text): Delete.
	(buffer_grow, buffer_free, buffer_init, buffer_finish,
	buffer_xml_printf): Move to common/buffer.c.
	* server.c (main): Remove call to initialize_inferiors.
	* server.h (struct ptid, ptid_t, minus_one_ptid, null_ptid,
	ptid_build, pid_to_ptid, ptid_get_pid, ptid_get_lwp, ptid_get_tid,
	ptid_equal, ptid_is_pid, initialize_inferiors, xml_escape_text,
	internal_error, gdb_assert, gdb_assert_fail): Delete.
	(struct buffer, buffer_grow, buffer_free, buffer_init, buffer_finish,
	buffer_xml_printf, buffer_grow_str, buffer_grow_str0): Move to
	common/buffer.h.
	* inferiors.c (null_ptid, minus_one_ptid, ptid_build, pid_to_ptid,
	ptid_get_pid, ptid_get_lwp, ptid_get_tid, ptid_equal, ptid_is_pid,
	initialize_inferiors): Delete.
2011-07-21 23:46:12 +00:00

445 lines
10 KiB
C

/* Inferior process information for the remote server for GDB.
Copyright (C) 2002, 2005, 2007, 2008, 2009, 2010, 2011
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 inferior_list all_processes;
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;
}
/* Invoke ACTION for each inferior in LIST. */
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 (ptid_t thread_id, void *target_data)
{
struct thread_info *new_thread = xmalloc (sizeof (*new_thread));
memset (new_thread, 0, sizeof (*new_thread));
new_thread->entry.id = thread_id;
new_thread->last_resume_kind = resume_continue;
new_thread->last_status.kind = TARGET_WAITKIND_IGNORE;
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 ());
}
ptid_t
thread_id_to_gdb_id (ptid_t thread_id)
{
struct inferior_list_entry *inf = all_threads.head;
while (inf != NULL)
{
if (ptid_equal (inf->id, thread_id))
return thread_id;
inf = inf->next;
}
return null_ptid;
}
ptid_t
thread_to_gdb_id (struct thread_info *thread)
{
return thread->entry.id;
}
struct thread_info *
find_thread_ptid (ptid_t ptid)
{
struct inferior_list_entry *inf = all_threads.head;
while (inf != NULL)
{
struct thread_info *thread = get_thread (inf);
if (ptid_equal (thread->entry.id, ptid))
return thread;
inf = inf->next;
}
return NULL;
}
ptid_t
gdb_id_to_thread_id (ptid_t gdb_id)
{
struct thread_info *thread = find_thread_ptid (gdb_id);
return thread ? thread->entry.id : null_ptid;
}
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);
}
/* Find the first inferior_list_entry E in LIST for which FUNC (E, ARG)
returns non-zero. If no entry is found then return NULL. */
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)
{
struct inferior_list_entry *next;
next = inf->next;
if ((*func) (inf, arg))
return inf;
inf = next;
}
return NULL;
}
struct inferior_list_entry *
find_inferior_id (struct inferior_list *list, ptid_t id)
{
struct inferior_list_entry *inf = list->head;
while (inf != NULL)
{
if (ptid_equal (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 = xmalloc (sizeof (*new_dll));
memset (new_dll, 0, sizeof (*new_dll));
new_dll->entry.id = minus_one_ptid;
new_dll->name = xstrdup (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);
if (dll == NULL)
/* For some inferiors we might get unloaded_dll events without having
a corresponding loaded_dll. In that case, the dll cannot be found
in ALL_DLL, and there is nothing further for us to do.
This has been observed when running 32bit executables on Windows64
(i.e. through WOW64, the interface between the 32bits and 64bits
worlds). In that case, the inferior always does some strange
unloading of unnamed dll. */
return;
else
{
/* DLL has been found so remove the entry and free associated
resources. */
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);
current_inferior = NULL;
}
/* 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 = xmalloc (sizeof (struct inferior_list_entry));
new_entry->id = pid_to_ptid (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_to_ptid (pid));
if (new_entry == NULL)
return 0;
else
{
remove_inferior (list, new_entry);
free (new_entry);
return 1;
}
}
struct process_info *
add_process (int pid, int attached)
{
struct process_info *process;
process = xcalloc (1, sizeof (*process));
process->head.id = pid_to_ptid (pid);
process->attached = attached;
add_inferior_to_list (&all_processes, &process->head);
return process;
}
/* Remove a process from the common process list and free the memory
allocated for it.
The caller is responsible for freeing private data first. */
void
remove_process (struct process_info *process)
{
clear_symbol_cache (&process->symbol_cache);
free_all_breakpoints (process);
remove_inferior (&all_processes, &process->head);
free (process);
}
struct process_info *
find_process_pid (int pid)
{
return (struct process_info *)
find_inferior_id (&all_processes, pid_to_ptid (pid));
}
/* Return non-zero if INF, a struct process_info, was started by us,
i.e. not attached to. */
static int
started_inferior_callback (struct inferior_list_entry *entry, void *args)
{
struct process_info *process = (struct process_info *) entry;
return ! process->attached;
}
/* Return non-zero if there are any inferiors that we have created
(as opposed to attached-to). */
int
have_started_inferiors_p (void)
{
return (find_inferior (&all_processes, started_inferior_callback, NULL)
!= NULL);
}
/* Return non-zero if INF, a struct process_info, was attached to. */
static int
attached_inferior_callback (struct inferior_list_entry *entry, void *args)
{
struct process_info *process = (struct process_info *) entry;
return process->attached;
}
/* Return non-zero if there are any inferiors that we have attached to. */
int
have_attached_inferiors_p (void)
{
return (find_inferior (&all_processes, attached_inferior_callback, NULL)
!= NULL);
}
struct process_info *
get_thread_process (struct thread_info *thread)
{
int pid = ptid_get_pid (thread->entry.id);
return find_process_pid (pid);
}
struct process_info *
current_process (void)
{
if (current_inferior == NULL)
fatal ("Current inferior requested, but current_inferior is NULL\n");
return get_thread_process (current_inferior);
}