/* Machine independent support for SVR4 /proc (process file system) for GDB.
- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2006, 2007
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Written by Michael Snyder at Cygnus Solutions.
*/
static void procfs_open (char *, int);
-static void procfs_attach (char *, int);
-static void procfs_detach (char *, int);
+static void procfs_attach (struct target_ops *, char *, int);
+static void procfs_detach (struct target_ops *, char *, int);
static void procfs_resume (ptid_t, int, enum target_signal);
static int procfs_can_run (void);
-static void procfs_stop (void);
+static void procfs_stop (ptid_t);
static void procfs_files_info (struct target_ops *);
static void procfs_fetch_registers (struct regcache *, int);
static void procfs_store_registers (struct regcache *, int);
static void procfs_notice_signals (ptid_t);
static void procfs_prepare_to_store (struct regcache *);
static void procfs_kill_inferior (void);
-static void procfs_mourn_inferior (void);
-static void procfs_create_inferior (char *, char *, char **, int);
+static void procfs_mourn_inferior (struct target_ops *ops);
+static void procfs_create_inferior (struct target_ops *, char *,
+ char *, char **, int);
static ptid_t procfs_wait (ptid_t, struct target_waitstatus *);
-static int procfs_xfer_memory (CORE_ADDR, char *, int, int,
+static int procfs_xfer_memory (CORE_ADDR, gdb_byte *, int, int,
struct mem_attrib *attrib,
struct target_ops *);
static LONGEST procfs_xfer_partial (struct target_ops *ops,
enum target_object object,
const char *annex,
- void *readbuf, const void *writebuf,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
ULONGEST offset, LONGEST len);
static int procfs_thread_alive (ptid_t);
struct target_ops procfs_ops; /* the target vector */
+#if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
+/* When GDB is built as 64-bit application on Solaris, the auxv data is
+ presented in 64-bit format. We need to provide a custom parser to handle
+ that. */
+static int
+procfs_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
+ gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
+{
+ gdb_byte *ptr = *readptr;
+
+ if (endptr == ptr)
+ return 0;
+
+ if (endptr - ptr < 8 * 2)
+ return -1;
+
+ *typep = extract_unsigned_integer (ptr, 4);
+ ptr += 8;
+ /* The size of data is always 64-bit. If the application is 32-bit,
+ it will be zero extended, as expected. */
+ *valp = extract_unsigned_integer (ptr, 8);
+ ptr += 8;
+
+ *readptr = ptr;
+ return 1;
+}
+#endif
+
static void
init_procfs_ops (void)
{
procfs_ops.to_find_memory_regions = proc_find_memory_regions;
procfs_ops.to_make_corefile_notes = procfs_make_note_section;
procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint;
+
+#if defined(PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
+ procfs_ops.to_auxv_parse = procfs_auxv_parse;
+#endif
+
procfs_ops.to_magic = OPS_MAGIC;
}
static procinfo *
create_procinfo (int pid, int tid)
{
- procinfo *pi, *parent;
+ procinfo *pi, *parent = NULL;
if ((pi = find_procinfo (pid, tid)))
return pi; /* Already exists, nothing to do. */
kill (pi->pid, SIGKILL);
destroy_procinfo (pi);
- error ((msg));
+ error ("%s", msg);
}
/*
char sinfo[sizeof (gdb_siginfo_t)];
} arg;
gdb_siginfo_t *mysinfo;
+ ptid_t wait_ptid;
+ struct target_waitstatus wait_status;
/*
* We should never have to apply this operation to any procinfo
/* The pointer is just a type alias. */
mysinfo = (gdb_siginfo_t *) &arg.sinfo;
- mysinfo->si_signo = signo;
- mysinfo->si_code = 0;
- mysinfo->si_pid = getpid (); /* ?why? */
- mysinfo->si_uid = getuid (); /* ?why? */
+ get_last_target_status (&wait_ptid, &wait_status);
+ if (ptid_equal (wait_ptid, inferior_ptid)
+ && wait_status.kind == TARGET_WAITKIND_STOPPED
+ && wait_status.value.sig == target_signal_from_host (signo)
+ && proc_get_status (pi)
+#ifdef NEW_PROC_API
+ && pi->prstatus.pr_lwp.pr_info.si_signo == signo
+#else
+ && pi->prstatus.pr_info.si_signo == signo
+#endif
+ )
+ /* Use the siginfo associated with the signal being
+ redelivered. */
+#ifdef NEW_PROC_API
+ memcpy (mysinfo, &pi->prstatus.pr_lwp.pr_info, sizeof (gdb_siginfo_t));
+#else
+ memcpy (mysinfo, &pi->prstatus.pr_info, sizeof (gdb_siginfo_t));
+#endif
+ else
+ {
+ mysinfo->si_signo = signo;
+ mysinfo->si_code = 0;
+ mysinfo->si_pid = getpid (); /* ?why? */
+ mysinfo->si_uid = getuid (); /* ?why? */
+ }
#ifdef NEW_PROC_API
arg.cmd = PCSSIG;
static void *
procfs_address_to_host_pointer (CORE_ADDR addr)
{
+ struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
void *ptr;
- gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr));
- gdbarch_address_to_pointer (current_gdbarch, builtin_type_void_data_ptr,
- &ptr, addr);
+ gdb_assert (sizeof (ptr) == TYPE_LENGTH (ptr_type));
+ gdbarch_address_to_pointer (target_gdbarch, ptr_type,
+ (gdb_byte *) &ptr, addr);
return ptr;
}
#endif
}
-#ifdef TM_I386SOL2_H /* Is it hokey to use this? */
+#if (defined(__i386__) || defined(__x86_64__)) && defined (sun)
#include <sys/sysi86.h>
#endif
}
-#endif /* TM_I386SOL2_H */
+/*
+ * Function: procfs_find_LDT_entry
+ *
+ * Input:
+ * ptid_t ptid; // The GDB-style pid-plus-LWP.
+ *
+ * Return:
+ * pointer to the corresponding LDT entry.
+ */
+
+struct ssd *
+procfs_find_LDT_entry (ptid_t ptid)
+{
+ gdb_gregset_t *gregs;
+ int key;
+ procinfo *pi;
+
+ /* Find procinfo for the lwp. */
+ if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL)
+ {
+ warning (_("procfs_find_LDT_entry: could not find procinfo for %d:%ld."),
+ PIDGET (ptid), TIDGET (ptid));
+ return NULL;
+ }
+ /* get its general registers. */
+ if ((gregs = proc_get_gregs (pi)) == NULL)
+ {
+ warning (_("procfs_find_LDT_entry: could not read gregs for %d:%ld."),
+ PIDGET (ptid), TIDGET (ptid));
+ return NULL;
+ }
+ /* Now extract the GS register's lower 16 bits. */
+ key = (*gregs)[GS] & 0xffff;
+
+ /* Find the matching entry and return it. */
+ return proc_get_LDT_entry (pi, key);
+}
+
+#endif
/* =============== END, non-thread part of /proc "MODULE" =============== */
}
static void
-procfs_attach (char *args, int from_tty)
+procfs_attach (struct target_ops *ops, char *args, int from_tty)
{
char *exec_file;
int pid;
}
static void
-procfs_detach (char *args, int from_tty)
+procfs_detach (struct target_ops *ops, char *args, int from_tty)
{
int sig = 0;
+ int pid = PIDGET (inferior_ptid);
if (args)
sig = atoi (args);
if (from_tty)
{
- int pid = PIDGET (inferior_ptid);
char *exec_file;
exec_file = get_exec_file (0);
do_detach (sig);
inferior_ptid = null_ptid;
+ detach_inferior (pid);
unpush_target (&procfs_ops);
}
do_attach (ptid_t ptid)
{
procinfo *pi;
+ struct inferior *inf;
int fail;
+ int lwpid;
if ((pi = create_procinfo (PIDGET (ptid), 0)) == NULL)
perror (_("procfs: out of memory in 'attach'"));
if ((fail = procfs_debug_inferior (pi)) != 0)
dead_procinfo (pi, "do_attach: failed in procfs_debug_inferior", NOKILL);
+ inf = add_inferior (pi->pid);
/* Let GDB know that the inferior was attached. */
- attach_flag = 1;
- return MERGEPID (pi->pid, proc_get_current_thread (pi));
+ inf->attach_flag = 1;
+
+ /* Create a procinfo for the current lwp. */
+ lwpid = proc_get_current_thread (pi);
+ create_procinfo (pi->pid, lwpid);
+
+ /* Add it to gdb's thread list. */
+ ptid = MERGEPID (pi->pid, lwpid);
+ add_thread (ptid);
+
+ return ptid;
}
static void
proc_warn (pi, "do_detach, set_rlc", __LINE__);
}
- attach_flag = 0;
destroy_procinfo (pi);
}
int tid = TIDGET (inferior_ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- /* First look up procinfo for the main process. */
- pi = find_procinfo_or_die (pid, 0);
-
- /* If the event thread is not the same as GDB's requested thread
- (ie. inferior_ptid), then look up procinfo for the requested
- thread. */
- if (tid != 0 && tid != proc_get_current_thread (pi))
- pi = find_procinfo_or_die (pid, tid);
+ pi = find_procinfo_or_die (pid, tid);
if (pi == NULL)
error (_("procfs: fetch_registers failed to find procinfo for %s"),
int tid = TIDGET (inferior_ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
- /* First find procinfo for main process. */
- pi = find_procinfo_or_die (pid, 0);
-
- /* If the event thread is not the same as GDB's requested thread
- (ie. inferior_ptid), then look up procinfo for the requested
- thread. */
- if (tid != 0 && tid != proc_get_current_thread (pi))
- pi = find_procinfo_or_die (pid, tid);
+ pi = find_procinfo_or_die (pid, tid);
if (pi == NULL)
error (_("procfs: store_registers: failed to find procinfo for %s"),
case PR_SYSENTRY:
if (syscall_is_lwp_exit (pi, what))
{
- printf_filtered (_("[%s exited]\n"),
- target_pid_to_str (retval));
+ if (print_thread_events)
+ printf_unfiltered (_("[%s exited]\n"),
+ target_pid_to_str (retval));
delete_thread (retval);
status->kind = TARGET_WAITKIND_SPURIOUS;
return retval;
}
else if (syscall_is_exit (pi, what))
{
+ struct inferior *inf;
+
/* Handle SYS_exit call only */
/* Stopped at entry to SYS_exit.
Make it runnable, resume it, then use
TARGET_WAITKIND_SPURIOUS. */
if (!proc_run_process (pi, 0, 0))
proc_error (pi, "target_wait, run_process", __LINE__);
- if (attach_flag)
+
+ inf = find_inferior_pid (pi->pid);
+ if (inf->attach_flag)
{
/* Don't call wait: simulate waiting for exit,
return a "success" exit code. Bogus: what if
temp_ptid = MERGEPID (pi->pid, temp_tid);
/* If not in GDB's thread list, add it. */
if (!in_thread_list (temp_ptid))
- {
- printf_filtered (_("[New %s]\n"),
- target_pid_to_str (temp_ptid));
- add_thread (temp_ptid);
- }
+ add_thread (temp_ptid);
+
/* Return to WFI, but tell it to immediately resume. */
status->kind = TARGET_WAITKIND_SPURIOUS;
return inferior_ptid;
}
else if (syscall_is_lwp_exit (pi, what))
{
- printf_filtered (_("[%s exited]\n"),
- target_pid_to_str (retval));
+ if (print_thread_events)
+ printf_unfiltered (_("[%s exited]\n"),
+ target_pid_to_str (retval));
delete_thread (retval);
status->kind = TARGET_WAITKIND_SPURIOUS;
return retval;
/* If not in GDB's thread list, add it. */
temp_ptid = MERGEPID (pi->pid, temp_tid);
if (!in_thread_list (temp_ptid))
- {
- printf_filtered (_("[New %s]\n"),
- target_pid_to_str (temp_ptid));
- add_thread (temp_ptid);
- }
+ add_thread (temp_ptid);
status->kind = TARGET_WAITKIND_STOPPED;
status->value.sig = 0;
* If we don't create a procinfo, resume may be unhappy
* later.
*/
- printf_filtered (_("[New %s]\n"), target_pid_to_str (retval));
add_thread (retval);
if (find_procinfo (PIDGET (retval), TIDGET (retval)) == NULL)
create_procinfo (PIDGET (retval), TIDGET (retval));
-
- /* In addition, it's possible that this is the first
- * new thread we've seen, in which case we may not
- * have created entries for inferior_ptid yet.
- */
- if (TIDGET (inferior_ptid) != 0)
- {
- if (!in_thread_list (inferior_ptid))
- add_thread (inferior_ptid);
- if (find_procinfo (PIDGET (inferior_ptid),
- TIDGET (inferior_ptid)) == NULL)
- create_procinfo (PIDGET (inferior_ptid),
- TIDGET (inferior_ptid));
- }
}
}
else /* flags do not indicate STOPPED */
static LONGEST
procfs_xfer_partial (struct target_ops *ops, enum target_object object,
- const char *annex, void *readbuf,
- const void *writebuf, ULONGEST offset, LONGEST len)
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
{
switch (object)
{
case TARGET_OBJECT_MEMORY:
if (readbuf)
- return (*ops->deprecated_xfer_memory) (offset, readbuf, len,
- 0/*write*/, NULL, ops);
+ return (*ops->deprecated_xfer_memory) (offset, readbuf,
+ len, 0/*read*/, NULL, ops);
if (writebuf)
- return (*ops->deprecated_xfer_memory) (offset, writebuf, len,
- 1/*write*/, NULL, ops);
+ return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
+ len, 1/*write*/, NULL, ops);
return -1;
#ifdef NEW_PROC_API
negative values, but this capability isn't implemented here.) */
static int
-procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite,
+procfs_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int dowrite,
struct mem_attrib *attrib, struct target_ops *target)
{
procinfo *pi;
static void
procfs_files_info (struct target_ops *ignore)
{
+ struct inferior *inf = current_inferior ();
printf_filtered (_("\tUsing the running image of %s %s via /proc.\n"),
- attach_flag? "attached": "child",
+ inf->attach_flag? "attached": "child",
target_pid_to_str (inferior_ptid));
}
*/
static void
-procfs_stop (void)
+procfs_stop (ptid_t ptid)
{
kill (-inferior_process_group, SIGINT);
}
*/
static void
-procfs_mourn_inferior (void)
+procfs_mourn_inferior (struct target_ops *ops)
{
procinfo *pi;
procinfo *pi;
gdb_sigset_t signals;
int fail;
+ int lwpid;
/* This routine called on the parent side (GDB side)
after GDB forks the inferior. */
if (!proc_set_run_on_last_close (pi))
proc_error (pi, "init_inferior, set_RLC", __LINE__);
- /* The 'process ID' we return to GDB is composed of
- the actual process ID plus the lwp ID. */
- inferior_ptid = MERGEPID (pi->pid, proc_get_current_thread (pi));
+ /* We now have have access to the lwpid of the main thread/lwp. */
+ lwpid = proc_get_current_thread (pi);
+
+ /* Create a procinfo for the main lwp. */
+ create_procinfo (pid, lwpid);
+
+ /* We already have a main thread registered in the thread table at
+ this point, but it didn't have any lwp info yet. Notify the core
+ about it. This changes inferior_ptid as well. */
+ thread_change_ptid (pid_to_ptid (pid),
+ MERGEPID (pid, lwpid));
/* Typically two, one trap to exec the shell, one to exec the
program being debugged. Defined by "inferior.h". */
*/
static void
-procfs_create_inferior (char *exec_file, char *allargs, char **env,
- int from_tty)
+procfs_create_inferior (struct target_ops *ops, char *exec_file,
+ char *allargs, char **env, int from_tty)
{
char *shell_file = getenv ("SHELL");
char *tryname;
{
ptid_t gdb_threadid = MERGEPID (pi->pid, thread->tid);
- if (!in_thread_list (gdb_threadid))
+ if (!in_thread_list (gdb_threadid) || is_exited (gdb_threadid))
add_thread (gdb_threadid);
return 0;
procfs_address_to_host_pointer will reveal that an internal error
will be generated when the host and target pointer sizes are
different. */
- if (sizeof (void *) != TYPE_LENGTH (builtin_type_void_data_ptr))
+ struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
+ if (sizeof (void *) != TYPE_LENGTH (ptr_type))
return 0;
/* Other tests here??? */
return 0;
}
-#ifdef TM_I386SOL2_H
-/*
- * Function: procfs_find_LDT_entry
- *
- * Input:
- * ptid_t ptid; // The GDB-style pid-plus-LWP.
- *
- * Return:
- * pointer to the corresponding LDT entry.
- */
-
-struct ssd *
-procfs_find_LDT_entry (ptid_t ptid)
-{
- gdb_gregset_t *gregs;
- int key;
- procinfo *pi;
-
- /* Find procinfo for the lwp. */
- if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL)
- {
- warning (_("procfs_find_LDT_entry: could not find procinfo for %d:%d."),
- PIDGET (ptid), TIDGET (ptid));
- return NULL;
- }
- /* get its general registers. */
- if ((gregs = proc_get_gregs (pi)) == NULL)
- {
- warning (_("procfs_find_LDT_entry: could not read gregs for %d:%d."),
- PIDGET (ptid), TIDGET (ptid));
- return NULL;
- }
- /* Now extract the GS register's lower 16 bits. */
- key = (*gregs)[GS] & 0xffff;
-
- /* Find the matching entry and return it. */
- return proc_get_LDT_entry (pi, key);
-}
-#endif /* TM_I386SOL2_H */
-
/*
* Memory Mappings Functions:
*/
static int
info_mappings_callback (struct prmap *map, int (*ignore) (), void *unused)
{
- char *data_fmt_string;
-
- if (gdbarch_addr_bit (current_gdbarch) == 32)
- data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n";
- else
- data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n";
+ unsigned int pr_off;
- printf_filtered (data_fmt_string,
- (unsigned long) map->pr_vaddr,
- (unsigned long) map->pr_vaddr + map->pr_size - 1,
- map->pr_size,
#ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */
- (unsigned int) map->pr_offset,
+ pr_off = (unsigned int) map->pr_offset;
#else
- map->pr_off,
+ pr_off = map->pr_off;
#endif
- mappingflags (map->pr_mflags));
+
+ if (gdbarch_addr_bit (current_gdbarch) == 32)
+ printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n",
+ (unsigned long) map->pr_vaddr,
+ (unsigned long) map->pr_vaddr + map->pr_size - 1,
+ map->pr_size,
+ pr_off,
+ mappingflags (map->pr_mflags));
+ else
+ printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n",
+ (unsigned long) map->pr_vaddr,
+ (unsigned long) map->pr_vaddr + map->pr_size - 1,
+ map->pr_size,
+ pr_off,
+ mappingflags (map->pr_mflags));
return 0;
}
static void
info_proc_mappings (procinfo *pi, int summary)
{
- char *header_fmt_string;
-
- if (gdbarch_ptr_bit (current_gdbarch) == 32)
- header_fmt_string = "\t%10s %10s %10s %10s %7s\n";
- else
- header_fmt_string = " %18s %18s %10s %10s %7s\n";
-
if (summary)
return; /* No output for summary mode. */
printf_filtered (_("Mapped address spaces:\n\n"));
- printf_filtered (header_fmt_string,
- "Start Addr",
- " End Addr",
- " Size",
- " Offset",
- "Flags");
+ if (gdbarch_ptr_bit (current_gdbarch) == 32)
+ printf_filtered ("\t%10s %10s %10s %10s %7s\n",
+ "Start Addr",
+ " End Addr",
+ " Size",
+ " Offset",
+ "Flags");
+ else
+ printf_filtered (" %18s %18s %10s %10s %7s\n",
+ "Start Addr",
+ " End Addr",
+ " Size",
+ " Offset",
+ "Flags");
iterate_over_mappings (pi, NULL, NULL, info_mappings_callback);
printf_filtered ("\n");
old_chain = make_cleanup (null_cleanup, 0);
if (args)
{
- if ((argv = buildargv (args)) == NULL)
- nomem (0);
- else
- make_cleanup_freeargv (argv);
+ argv = gdb_buildargv (args);
+ make_cleanup_freeargv (argv);
}
while (argv != NULL && *argv != NULL)
{
return pid_to_ptid (procinfo_list ? procinfo_list->pid : -1);
}
+static int
+find_signalled_thread (struct thread_info *info, void *data)
+{
+ if (info->stop_signal != TARGET_SIGNAL_0
+ && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid))
+ return 1;
+
+ return 0;
+}
+
+static enum target_signal
+find_stop_signal (void)
+{
+ struct thread_info *info =
+ iterate_over_threads (find_signalled_thread, NULL);
+
+ if (info)
+ return info->stop_signal;
+ else
+ return TARGET_SIGNAL_0;
+}
+
/* =================== GCORE .NOTE "MODULE" =================== */
#if defined (UNIXWARE) || defined (PIOCOPENLWP) || defined (PCAGENT)
/* gcore only implemented on solaris and unixware (so far) */
static char *
procfs_do_thread_registers (bfd *obfd, ptid_t ptid,
- char *note_data, int *note_size)
+ char *note_data, int *note_size,
+ enum target_signal stop_signal)
{
struct regcache *regcache = get_thread_regcache (ptid);
gdb_gregset_t gregs;
bfd *obfd;
char *note_data;
int *note_size;
+ enum target_signal stop_signal;
};
static int
{
struct procfs_corefile_thread_data *args = data;
- if (pi != NULL && thread->tid != 0)
+ if (pi != NULL)
{
ptid_t saved_ptid = inferior_ptid;
inferior_ptid = MERGEPID (pi->pid, thread->tid);
args->note_data = procfs_do_thread_registers (args->obfd, inferior_ptid,
args->note_data,
- args->note_size);
+ args->note_size,
+ args->stop_signal);
inferior_ptid = saved_ptid;
}
return 0;
char *note_data = NULL;
char *inf_args;
struct procfs_corefile_thread_data thread_args;
- char *auxv;
+ gdb_byte *auxv;
int auxv_len;
if (get_exec_file (0))
thread_args.obfd = obfd;
thread_args.note_data = note_data;
thread_args.note_size = note_size;
+ thread_args.stop_signal = find_stop_signal ();
proc_iterate_over_threads (pi, procfs_corefile_thread_callback, &thread_args);
- if (thread_args.note_data == note_data)
- {
- /* iterate_over_threads didn't come up with any threads;
- just use inferior_ptid. */
- note_data = procfs_do_thread_registers (obfd, inferior_ptid,
- note_data, note_size);
- }
- else
- {
- note_data = thread_args.note_data;
- }
+ /* There should be always at least one thread. */
+ gdb_assert (thread_args.note_data != note_data);
+ note_data = thread_args.note_data;
auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV,
NULL, &auxv);
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