/* Machine independent support for SVR4 /proc (process file system) for GDB.
- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2006, 2007, 2008, 2009, 2010,
- 2011 Free Software Foundation, Inc.
+ Copyright (C) 1999-2003, 2006-2012 Free Software Foundation, Inc.
Written by Michael Snyder at Cygnus Solutions.
Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others.
struct regcache *, int);
static void procfs_store_registers (struct target_ops *,
struct regcache *, int);
-static void procfs_notice_signals (ptid_t);
+static void procfs_pass_signals (int, unsigned char *);
static void procfs_kill_inferior (struct target_ops *ops);
static void procfs_mourn_inferior (struct target_ops *ops);
static void procfs_create_inferior (struct target_ops *, char *,
static int procfs_can_use_hw_breakpoint (int, int, int);
+static void procfs_info_proc (struct target_ops *, char *,
+ enum info_proc_what);
+
#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
t->to_store_registers = procfs_store_registers;
t->to_xfer_partial = procfs_xfer_partial;
t->deprecated_xfer_memory = procfs_xfer_memory;
- t->to_notice_signals = procfs_notice_signals;
+ t->to_pass_signals = procfs_pass_signals;
t->to_files_info = procfs_files_info;
t->to_stop = procfs_stop;
t->to_has_thread_control = tc_schedlock;
t->to_find_memory_regions = proc_find_memory_regions;
t->to_make_corefile_notes = procfs_make_note_section;
+ t->to_info_proc = procfs_info_proc;
#if defined(PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
t->to_auxv_parse = procfs_auxv_parse;
#ifdef HAVE_PR_SIGINFO64_T
typedef pr_siginfo64_t gdb_siginfo_t;
#else
-typedef struct siginfo gdb_siginfo_t;
+typedef siginfo_t gdb_siginfo_t;
#endif
/* On mips-irix, praddset and prdelset are defined in such a way that
else
strcat (tmp, "/ctl");
fd = open_with_retry (tmp, O_WRONLY);
- if (fd <= 0)
+ if (fd < 0)
return 0; /* fail */
pi->ctl_fd = fd;
break;
return 0; /* There is no 'as' file descriptor for an lwp. */
strcat (tmp, "/as");
fd = open_with_retry (tmp, O_RDWR);
- if (fd <= 0)
+ if (fd < 0)
return 0; /* fail */
pi->as_fd = fd;
break;
else
strcat (tmp, "/status");
fd = open_with_retry (tmp, O_RDONLY);
- if (fd <= 0)
+ if (fd < 0)
return 0; /* fail */
pi->status_fd = fd;
break;
#ifdef PIOCTSTATUS /* OSF */
/* Only one FD; just open it. */
- if ((fd = open_with_retry (pi->pathname, O_RDWR)) == 0)
+ if ((fd = open_with_retry (pi->pathname, O_RDWR)) < 0)
return 0;
#else /* Sol 2.5, Irix, other? */
if (pi->tid == 0) /* Master procinfo for the process */
{
fd = open_with_retry (pi->pathname, O_RDWR);
- if (fd <= 0)
+ if (fd < 0)
return 0; /* fail */
}
else /* LWP thread procinfo */
return 0; /* fail */
/* Now obtain the file descriptor for the LWP. */
- if ((fd = ioctl (process->ctl_fd, PIOCOPENLWP, &lwpid)) <= 0)
+ if ((fd = ioctl (process->ctl_fd, PIOCOPENLWP, &lwpid)) < 0)
return 0; /* fail */
#else /* Irix, other? */
return 0; /* Don't know how to open threads. */
prsysent_t header;
prsyscall_t *syscalls;
int i, size, maxcall;
+ struct cleanup *cleanups;
pi->num_syscalls = 0;
pi->syscall_names = 0;
{
error (_("load_syscalls: Can't open /proc/%d/sysent"), pi->pid);
}
+ cleanups = make_cleanup_close (sysent_fd);
size = sizeof header - sizeof (prsyscall_t);
if (read (sysent_fd, &header, size) != size)
size = header.pr_nsyscalls * sizeof (prsyscall_t);
syscalls = xmalloc (size);
+ make_cleanup (free_current_contents, &syscalls);
if (read (sysent_fd, syscalls, size) != size)
- {
- xfree (syscalls);
- error (_("load_syscalls: Error reading /proc/%d/sysent"), pi->pid);
- }
+ error (_("load_syscalls: Error reading /proc/%d/sysent"), pi->pid);
/* Find maximum syscall number. This may not be the same as
pr_nsyscalls since that value refers to the number of entries
pi->syscall_names[callnum][size-1] = '\0';
}
- close (sysent_fd);
- xfree (syscalls);
+ do_cleanups (cleanups);
}
/* Free the space allocated for the syscall names from the procinfo
long proc_flags (procinfo * pi);
int proc_why (procinfo * pi);
int proc_what (procinfo * pi);
+int proc_nsysarg (procinfo * pi);
+long *proc_sysargs (procinfo * pi);
+int proc_syscall (procinfo * pi);
+long proc_cursig (struct procinfo * pi);
int proc_set_run_on_last_close (procinfo * pi);
int proc_unset_run_on_last_close (procinfo * pi);
+int proc_set_kill_on_last_close (procinfo * pi);
+int proc_unset_kill_on_last_close (procinfo * pi);
int proc_set_inherit_on_fork (procinfo * pi);
int proc_unset_inherit_on_fork (procinfo * pi);
int proc_set_async (procinfo * pi);
}
#endif
-int
+static int
proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags)
{
#if !defined (PCWATCH) && !defined (PIOCSWATCH)
unfortunately requires a different method on every OS. Returns
non-zero for success, zero for failure. */
-int
+static int
proc_delete_dead_threads (procinfo *parent, procinfo *thread, void *ignore)
{
if (thread && parent) /* sanity */
static ptid_t do_attach (ptid_t ptid);
static void do_detach (int signo);
-static int register_gdb_signals (procinfo *, gdb_sigset_t *);
static void proc_trace_syscalls_1 (procinfo *pi, int syscallnum,
int entry_or_exit, int mode, int from_tty);
if (!proc_set_traced_faults (pi, &traced_faults))
return __LINE__;
- /* Register to trace selected signals in the child. */
- premptyset (&traced_signals);
- if (!register_gdb_signals (pi, &traced_signals))
+ /* Initially, register to trace all signals in the child. */
+ prfillset (&traced_signals);
+ if (!proc_set_traced_signals (pi, &traced_signals))
return __LINE__;
}
}
-/* Traverse the list of signals that GDB knows about (see "handle"
- command), and arrange for the target to be stopped or not,
- according to these settings. Returns non-zero for success, zero
- for failure. */
-
-static int
-register_gdb_signals (procinfo *pi, gdb_sigset_t *signals)
-{
- int signo;
-
- for (signo = 0; signo < NSIG; signo ++)
- if (signal_stop_state (target_signal_from_host (signo)) == 0 &&
- signal_print_state (target_signal_from_host (signo)) == 0 &&
- signal_pass_state (target_signal_from_host (signo)) == 1)
- gdb_prdelset (signals, signo);
- else
- gdb_praddset (signals, signo);
-
- return proc_set_traced_signals (pi, signals);
-}
-
/* Set up to trace signals in the child process. */
static void
-procfs_notice_signals (ptid_t ptid)
+procfs_pass_signals (int numsigs, unsigned char *pass_signals)
{
gdb_sigset_t signals;
- procinfo *pi = find_procinfo_or_die (PIDGET (ptid), 0);
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ int signo;
- if (proc_get_traced_signals (pi, &signals) &&
- register_gdb_signals (pi, &signals))
- return;
- else
- proc_error (pi, "notice_signals", __LINE__);
+ prfillset (&signals);
+
+ for (signo = 0; signo < NSIG; signo++)
+ {
+ int target_signo = target_signal_from_host (signo);
+ if (target_signo < numsigs && pass_signals[target_signo])
+ gdb_prdelset (&signals, signo);
+ }
+
+ if (!proc_set_traced_signals (pi, &signals))
+ proc_error (pi, "pass_signals", __LINE__);
}
/* Print status information about the child process. */
push_target (ops);
if ((pi = create_procinfo (pid, 0)) == NULL)
- perror ("procfs: out of memory in 'init_inferior'");
+ perror (_("procfs: out of memory in 'init_inferior'"));
if (!open_procinfo_files (pi, FD_CTL))
proc_error (pi, "init_inferior, open_proc_files", __LINE__);
if (!proc_get_traced_sysexit (pi, pi->saved_exitset))
proc_error (pi, "init_inferior, get_traced_sysexit", __LINE__);
- /* Register to trace selected signals in the child. */
- prfillset (&signals);
- if (!register_gdb_signals (pi, &signals))
- proc_error (pi, "init_inferior, register_signals", __LINE__);
-
if ((fail = procfs_debug_inferior (pi)) != 0)
proc_error (pi, "init_inferior (procfs_debug_inferior)", fail);
}
pid = fork_inferior (exec_file, allargs, env, procfs_set_exec_trap,
- NULL, NULL, shell_file);
+ NULL, NULL, shell_file, NULL);
procfs_init_inferior (ops, pid);
}
/* Insert a watchpoint. */
-int
+static int
procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag,
int after)
{
int funcstat;
int map_fd;
int nmap;
+ struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
#ifdef NEW_PROC_API
struct stat sbuf;
#endif
for (prmap = prmaps; nmap > 0; prmap++, nmap--)
if ((funcstat = (*func) (prmap, child_func, data)) != 0)
- return funcstat;
+ {
+ do_cleanups (cleanups);
+ return funcstat;
+ }
+ do_cleanups (cleanups);
return 0;
}
/* Implement the "info proc" command. */
static void
-info_proc_cmd (char *args, int from_tty)
+procfs_info_proc (struct target_ops *ops, char *args,
+ enum info_proc_what what)
{
struct cleanup *old_chain;
procinfo *process = NULL;
int tid = 0;
int mappings = 0;
+ switch (what)
+ {
+ case IP_MINIMAL:
+ break;
+
+ case IP_MAPPINGS:
+ case IP_ALL:
+ mappings = 1;
+ break;
+
+ default:
+ error (_("Not supported on this target."));
+ }
+
old_chain = make_cleanup (null_cleanup, 0);
if (args)
{
{
tid = strtoul (argv[0] + 1, NULL, 10);
}
- else if (strncmp (argv[0], "mappings", strlen (argv[0])) == 0)
- {
- mappings = 1;
- }
- else
- {
- /* [...] */
- }
argv++;
}
if (pid == 0)
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern void _initialize_procfs (void);
+
void
_initialize_procfs (void)
{
observer_attach_inferior_created (procfs_inferior_created);
- add_info ("proc", info_proc_cmd, _("\
-Show /proc process information about any running process.\n\
-Specify process id, or use the program being debugged by default.\n\
-Specify keyword 'mappings' for detailed info on memory mappings."));
add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd,
_("Give a trace of entries into the syscall."));
add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd,
if (get_exec_file (0))
{
- strncpy (fname, strrchr (get_exec_file (0), '/') + 1, sizeof (fname));
- strncpy (psargs, get_exec_file (0),
- sizeof (psargs));
+ strncpy (fname, lbasename (get_exec_file (0)), sizeof (fname));
+ fname[sizeof (fname) - 1] = 0;
+ strncpy (psargs, get_exec_file (0), sizeof (psargs));
+ psargs[sizeof (psargs) - 1] = 0;
inf_args = get_inferior_args ();
if (inf_args && *inf_args &&
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