/* Machine independent support for SVR4 /proc (process file system) for GDB.
- Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
- Written by Fred Fish at Cygnus Support.
+ Copyright 1991, 1992-96, 1997 Free Software Foundation, Inc.
+ Written by Fred Fish at Cygnus Support. Changes for sysv4.2mp procfs
+ compatibility by Geoffrey Noer at Cygnus Solutions.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* N O T E S
For information on the details of using /proc consult section proc(4)
in the UNIX System V Release 4 System Administrator's Reference Manual.
-The general register and floating point register sets are manipulated by
-separate ioctl's. This file makes the assumption that if FP0_REGNUM is
+The general register and floating point register sets are manipulated
+separately. This file makes the assumption that if FP0_REGNUM is
defined, then support for the floating point register set is desired,
regardless of whether or not the actual target has floating point hardware.
#include <sys/procfs.h>
#include <fcntl.h>
#include <errno.h>
-#include <string.h>
+#include "gdb_string.h"
#include <stropts.h>
#include <poll.h>
#include <unistd.h>
-#include <sys/stat.h>
+#include "gdb_stat.h"
#include "inferior.h"
#include "target.h"
#include "command.h"
#include "gdbcore.h"
-#include "thread.h"
+#include "gdbthread.h"
+
+/* the name of the proc status struct depends on the implementation */
+#ifdef HAVE_PSTATUS_T
+ typedef pstatus_t gdb_prstatus_t;
+#else
+ typedef prstatus_t gdb_prstatus_t;
+#endif
#define MAX_SYSCALLS 256 /* Maximum number of syscalls for table */
-#ifndef PROC_NAME_FMT
-#define PROC_NAME_FMT "/proc/%05d"
-#endif
+/* proc name formats may vary depending on the proc implementation */
+#ifdef HAVE_MULTIPLE_PROC_FDS
+# ifndef CTL_PROC_NAME_FMT
+# define CTL_PROC_NAME_FMT "/proc/%d/ctl"
+# define AS_PROC_NAME_FMT "/proc/%d/as"
+# define MAP_PROC_NAME_FMT "/proc/%d/map"
+# define STATUS_PROC_NAME_FMT "/proc/%d/status"
+# endif
+#else /* HAVE_MULTIPLE_PROC_FDS */
+# ifndef CTL_PROC_NAME_FMT
+# define CTL_PROC_NAME_FMT "/proc/%05d"
+# define AS_PROC_NAME_FMT "/proc/%05d"
+# define MAP_PROC_NAME_FMT "/proc/%05d"
+# define STATUS_PROC_NAME_FMT "/proc/%05d"
+# endif
+#endif /* HAVE_MULTIPLE_PROC_FDS */
+
+#define MAX_PROC_NAME_SIZE sizeof("/proc/1234567890/status")
extern struct target_ops procfs_ops; /* Forward declaration */
+int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to
+ be a runnable target. Used by targets
+ that can sit atop procfs, such as solaris
+ thread support. */
+
#if 1 /* FIXME: Gross and ugly hack to resolve coredep.c global */
CORE_ADDR kernel_u_addr;
#endif
#define si_uid _data._proc._pdata._kill.uid
#endif /* BROKEN_SIGINFO_H */
+/* Define structures for passing commands to /proc/pid/ctl file. Note that
+ while we create these for the PROCFS_USE_READ_WRITE world, we use them
+ and ignore the extra cmd int in other proc schemes.
+*/
+/* generic ctl msg */
+struct proc_ctl {
+ int cmd;
+ long data;
+};
+
+/* set general registers */
+struct greg_ctl {
+ int cmd;
+ gregset_t gregset;
+};
+
+/* set fp registers */
+struct fpreg_ctl {
+ int cmd;
+ fpregset_t fpregset;
+};
+
+/* set signals to be traced */
+struct sig_ctl {
+ int cmd;
+ sigset_t sigset;
+};
+
+/* set faults to be traced */
+struct flt_ctl {
+ int cmd;
+ fltset_t fltset;
+};
+
+/* set system calls to be traced */
+struct sys_ctl {
+ int cmd;
+ sysset_t sysset;
+};
+
+/* set current signal to be traced */
+struct sigi_ctl {
+ int cmd;
+ siginfo_t siginfo;
+};
+
/* All access to the inferior, either one started by gdb or one that has
been attached to, is controlled by an instance of a procinfo structure,
defined below. Since gdb currently only handles one inferior at a time,
struct procinfo {
struct procinfo *next;
int pid; /* Process ID of inferior */
- int fd; /* File descriptor for /proc entry */
+ int ctl_fd; /* File descriptor for /proc ctl file */
+ int status_fd; /* File descriptor for /proc status file */
+ int as_fd; /* File descriptor for /proc as file */
+ int map_fd; /* File descriptor for /proc map file */
char *pathname; /* Pathname to /proc entry */
int had_event; /* poll/select says something happened */
int was_stopped; /* Nonzero if was stopped prior to attach */
int nopass_next_sigstop; /* Don't pass a sigstop on next resume */
+#ifndef HAVE_NO_PRRUN_T
prrun_t prrun; /* Control state when it is run */
- prstatus_t prstatus; /* Current process status info */
- gregset_t gregset; /* General register set */
- fpregset_t fpregset; /* Floating point register set */
- fltset_t fltset; /* Current traced hardware fault set */
- sigset_t trace; /* Current traced signal set */
- sysset_t exitset; /* Current traced system call exit set */
- sysset_t entryset; /* Current traced system call entry set */
- fltset_t saved_fltset; /* Saved traced hardware fault set */
- sigset_t saved_trace; /* Saved traced signal set */
- sigset_t saved_sighold; /* Saved held signal set */
- sysset_t saved_exitset; /* Saved traced system call exit set */
- sysset_t saved_entryset; /* Saved traced system call entry set */
+#endif
+ gdb_prstatus_t prstatus; /* Current process status info */
+ struct greg_ctl gregset; /* General register set */
+ struct fpreg_ctl fpregset; /* Floating point register set */
+ struct flt_ctl fltset; /* Current traced hardware fault set */
+ struct sig_ctl trace; /* Current traced signal set */
+ struct sys_ctl exitset; /* Current traced system call exit set */
+ struct sys_ctl entryset; /* Current traced system call entry set */
+ struct sig_ctl saved_sighold; /* Saved held signal set */
+ struct flt_ctl saved_fltset; /* Saved traced hardware fault set */
+ struct sig_ctl saved_trace; /* Saved traced signal set */
+ struct sys_ctl saved_exitset; /* Saved traced system call exit set */
+ struct sys_ctl saved_entryset;/* Saved traced system call entry set */
+ int num_syscall_handlers; /* Number of syscall trap handlers
+ currently installed */
+ /* Pointer to list of syscall trap handlers */
+ struct procfs_syscall_handler *syscall_handlers;
+ int new_child; /* Non-zero if it's a new thread */
};
/* List of inferior process information */
static struct procinfo *procinfo_list = NULL;
-
static struct pollfd *poll_list; /* pollfds used for waiting on /proc */
static int num_poll_list = 0; /* Number of entries in poll_list */
-static int last_resume_pid = -1; /* Last pid used with procfs_resume */
-
/* Much of the information used in the /proc interface, particularly for
printing status information, is kept as tables of structures of the
following form. These tables can be used to map numeric values to
#endif
#if defined (PR_PCOMPAT)
{ PR_PCOMPAT, "PR_PCOMPAT", "Ptrace compatibility mode in effect" },
+#endif
+#if defined (PR_MSACCT)
+ { PR_MSACCT, "PR_MSACCT", "Microstate accounting enabled" },
+#endif
+#if defined (PR_BPTADJ)
+ { PR_BPTADJ, "PR_BPTADJ", "Breakpoint PC adjustment in effect" },
+#endif
+#if defined (PR_ASLWP)
+ { PR_ASLWP, "PR_ASLWP", "Asynchronus signal LWP" },
#endif
{ 0, NULL, NULL }
};
#if defined (PR_SIGNALLED)
{ PR_SIGNALLED, "PR_SIGNALLED", "Receipt of a traced signal" },
#endif
-#if defined (PR_FAULTED)
- { PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault" },
-#endif
#if defined (PR_SYSENTRY)
{ PR_SYSENTRY, "PR_SYSENTRY", "Entry to a traced system call" },
#endif
#if defined (PR_JOBCONTROL)
{ PR_JOBCONTROL, "PR_JOBCONTROL", "Default job control stop signal action" },
#endif
+#if defined (PR_FAULTED)
+ { PR_FAULTED, "PR_FAULTED", "Incurred a traced hardware fault" },
+#endif
#if defined (PR_SUSPENDED)
{ PR_SUSPENDED, "PR_SUSPENDED", "Process suspended" },
+#endif
+#if defined (PR_CHECKPOINT)
+ { PR_CHECKPOINT, "PR_CHECKPOINT", "(???)" },
#endif
{ 0, NULL, NULL }
};
/* Prototypes for local functions */
+static void procfs_stop PARAMS ((void));
+
+static int procfs_thread_alive PARAMS ((int));
+
+static int procfs_can_run PARAMS ((void));
+
+static void procfs_mourn_inferior PARAMS ((void));
+
+static void procfs_fetch_registers PARAMS ((int));
+
+static int procfs_wait PARAMS ((int, struct target_waitstatus *));
+
+static void procfs_open PARAMS ((char *, int));
+
+static void procfs_files_info PARAMS ((struct target_ops *));
+
+static void procfs_prepare_to_store PARAMS ((void));
+
+static void procfs_detach PARAMS ((char *, int));
+
+static void procfs_attach PARAMS ((char *, int));
+
+static void proc_set_exec_trap PARAMS ((void));
+
+static int procfs_init_inferior PARAMS ((int));
+
+static struct procinfo *create_procinfo PARAMS ((int));
+
+static void procfs_store_registers PARAMS ((int));
+
+static int procfs_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
+
+static void procfs_kill_inferior PARAMS ((void));
+
+static char *sigcodedesc PARAMS ((siginfo_t *));
+
+static char *sigcodename PARAMS ((siginfo_t *));
+
+static struct procinfo *wait_fd PARAMS ((void));
+
+static void remove_fd PARAMS ((struct procinfo *));
+
+static void add_fd PARAMS ((struct procinfo *));
+
static void set_proc_siginfo PARAMS ((struct procinfo *, int));
static void init_syscall_table PARAMS ((void));
static int proc_address_to_fd PARAMS ((struct procinfo *, CORE_ADDR, int));
-static int open_proc_file PARAMS ((int, struct procinfo *, int));
+static int open_proc_file PARAMS ((int, struct procinfo *, int, int));
static void close_proc_file PARAMS ((struct procinfo *));
static void unconditionally_kill_inferior PARAMS ((struct procinfo *));
-static NORETURN void proc_init_failed PARAMS ((struct procinfo *, char *)) ATTR_NORETURN;
+static NORETURN void proc_init_failed PARAMS ((struct procinfo *, char *, int)) ATTR_NORETURN;
static void info_proc PARAMS ((char *, int));
static void procfs_notice_signals PARAMS ((int pid));
+static void notice_signals PARAMS ((struct procinfo *, struct sig_ctl *));
+
static struct procinfo *find_procinfo PARAMS ((pid_t pid, int okfail));
+static int procfs_write_pcwstop PARAMS ((struct procinfo *));
+static int procfs_read_status PARAMS ((struct procinfo *));
+static void procfs_write_pckill PARAMS ((struct procinfo *));
+
+typedef int syscall_func_t PARAMS ((struct procinfo *pi, int syscall_num,
+ int why, int *rtnval, int *statval));
+
+static void procfs_set_syscall_trap PARAMS ((struct procinfo *pi,
+ int syscall_num, int flags,
+ syscall_func_t *func));
+
+static void procfs_clear_syscall_trap PARAMS ((struct procinfo *pi,
+ int syscall_num, int errok));
+
+#define PROCFS_SYSCALL_ENTRY 0x1 /* Trap on entry to sys call */
+#define PROCFS_SYSCALL_EXIT 0x2 /* Trap on exit from sys call */
+
+static syscall_func_t procfs_exit_handler;
+
+static syscall_func_t procfs_exec_handler;
+
+#ifdef SYS_sproc
+static syscall_func_t procfs_sproc_handler;
+static syscall_func_t procfs_fork_handler;
+#endif
+
+#ifdef SYS_lwp_create
+static syscall_func_t procfs_lwp_creation_handler;
+#endif
+
+static void modify_inherit_on_fork_flag PARAMS ((int fd, int flag));
+static void modify_run_on_last_close_flag PARAMS ((int fd, int flag));
+
+/* */
+
+struct procfs_syscall_handler
+{
+ int syscall_num; /* The number of the system call being handled */
+ /* The function to be called */
+ syscall_func_t *func;
+};
+
+static void procfs_resume PARAMS ((int pid, int step,
+ enum target_signal signo));
+
/* External function prototypes that can't be easily included in any
header file because the args are typedefs in system include files. */
extern void fill_gregset PARAMS ((gregset_t *, int));
+#ifdef FP0_REGNUM
extern void supply_fpregset PARAMS ((fpregset_t *));
extern void fill_fpregset PARAMS ((fpregset_t *, int));
+#endif
/*
poll_list = (struct pollfd *) xrealloc (poll_list,
(num_poll_list + 1)
* sizeof (struct pollfd));
- poll_list[num_poll_list].fd = pi->fd;
+ poll_list[num_poll_list].fd = pi->ctl_fd;
+#ifdef UNIXWARE
+ poll_list[num_poll_list].events = POLLWRNORM;
+#else
poll_list[num_poll_list].events = POLLPRI;
+#endif
num_poll_list++;
}
+/*
+
+LOCAL FUNCTION
+
+ remove_fd -- Remove the fd from the poll/select list
+
+SYNOPSIS
+
+ static void remove_fd (struct procinfo *);
+
+DESCRIPTION
+
+ Remove the fd of the supplied procinfo from the list of fds used
+ for poll/select operations.
+ */
+
static void
remove_fd (pi)
struct procinfo *pi;
for (i = 0; i < num_poll_list; i++)
{
- if (poll_list[i].fd == pi->fd)
+ if (poll_list[i].fd == pi->ctl_fd)
{
if (i != num_poll_list - 1)
- memcpy (poll_list, poll_list + i + 1,
+ memcpy (poll_list + i, poll_list + i + 1,
(num_poll_list - i - 1) * sizeof (struct pollfd));
num_poll_list--;
}
}
-#define LOSING_POLL unixware_sux
+/*
+
+LOCAL FUNCTION
+
+ procfs_read_status - get procfs fd status
+
+SYNOPSIS
+
+ static int procfs_read_status (pi) struct procinfo *pi;
+
+DESCRIPTION
+
+ Given a pointer to a procinfo struct, get the status of
+ the status_fd in the appropriate way. Returns 0 on failure,
+ 1 on success.
+ */
+
+static int
+procfs_read_status (pi)
+ struct procinfo *pi;
+{
+#ifdef PROCFS_USE_READ_WRITE
+ if ((lseek (pi->status_fd, 0, SEEK_SET) < 0) ||
+ (read (pi->status_fd, (char *) &pi->prstatus,
+ sizeof (gdb_prstatus_t)) != sizeof (gdb_prstatus_t)))
+#else
+ if (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) < 0)
+#endif
+ return 0;
+ else
+ return 1;
+}
+
+/*
+
+LOCAL FUNCTION
+
+ procfs_write_pcwstop - send a PCWSTOP to procfs fd
+
+SYNOPSIS
+
+ static int procfs_write_pcwstop (pi) struct procinfo *pi;
+
+DESCRIPTION
+
+ Given a pointer to a procinfo struct, send a PCWSTOP to
+ the ctl_fd in the appropriate way. Returns 0 on failure,
+ 1 on success.
+ */
+
+static int
+procfs_write_pcwstop (pi)
+ struct procinfo *pi;
+{
+#ifdef PROCFS_USE_READ_WRITE
+ long cmd = PCWSTOP;
+ if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
+#else
+ if (ioctl (pi->ctl_fd, PIOCWSTOP, &pi->prstatus) < 0)
+#endif
+ return 0;
+ else
+ return 1;
+}
+
+/*
+
+LOCAL FUNCTION
+
+ procfs_write_pckill - send a kill to procfs fd
+
+SYNOPSIS
+
+ static void procfs_write_pckill (pi) struct procinfo *pi;
+
+DESCRIPTION
+
+ Given a pointer to a procinfo struct, send a kill to
+ the ctl_fd in the appropriate way. Returns 0 on failure,
+ 1 on success.
+ */
+
+static void
+procfs_write_pckill (pi)
+ struct procinfo *pi;
+{
+#ifdef PROCFS_USE_READ_WRITE
+ struct proc_ctl pctl;
+ pctl.cmd = PCKILL;
+ pctl.data = SIGKILL;
+ write (pi->ctl_fd, &pctl, sizeof (struct proc_ctl));
+#else
+ int signo = SIGKILL;
+ ioctl (pi->ctl_fd, PIOCKILL, &signo);
+#endif
+}
static struct procinfo *
wait_fd ()
{
struct procinfo *pi;
+#ifndef LOSING_POLL
int num_fds;
int i;
+#endif
set_sigint_trap (); /* Causes SIGINT to be passed on to the
attached process. */
set_sigio_trap ();
#ifndef LOSING_POLL
- num_fds = poll (poll_list, num_poll_list, -1);
-#else
+ while (1)
+ {
+ num_fds = poll (poll_list, num_poll_list, -1);
+ if (num_fds > 0)
+ break;
+ if (num_fds < 0 && errno == EINTR)
+ continue;
+ print_sys_errmsg ("poll failed", errno);
+ error ("Poll failed, returned %d", num_fds);
+ }
+#else /* LOSING_POLL */
pi = current_procinfo;
- while (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0)
+ while (!procfs_write_pcwstop (pi))
{
if (errno == ENOENT)
{
else if (errno != EINTR)
{
print_sys_errmsg (pi->pathname, errno);
- error ("PIOCWSTOP failed");
+ error ("procfs_write_pcwstop failed");
}
}
pi->had_event = 1;
-#endif
+#endif /* LOSING_POLL */
clear_sigint_trap ();
clear_sigio_trap ();
#ifndef LOSING_POLL
- if (num_fds <= 0)
- {
- print_sys_errmsg ("poll failed\n", errno);
- error ("Poll failed, returned %d", num_fds);
- }
-
for (i = 0; i < num_poll_list && num_fds > 0; i++)
{
- if ((poll_list[i].revents & (POLLPRI|POLLERR|POLLHUP|POLLNVAL)) == 0)
+ if (0 == (poll_list[i].revents &
+ (POLLWRNORM | POLLPRI | POLLERR | POLLHUP | POLLNVAL)))
continue;
for (pi = procinfo_list; pi; pi = pi->next)
{
- if (poll_list[i].fd == pi->fd)
+ if (poll_list[i].fd == pi->ctl_fd)
{
- if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0)
+ if (!procfs_read_status(pi))
{
- print_sys_errmsg (pi->pathname, errno);
- error ("PIOCSTATUS failed");
+ /* The LWP has apparently terminated. */
+ if (info_verbose)
+ printf_filtered ("LWP %d doesn't respond.\n",
+ (pi->pid >> 16) & 0xffff);
+ /* could call close_proc_file here, but I'm afraid to... */
}
+
num_fds--;
pi->had_event = 1;
break;
}
}
if (!pi)
- error ("procfs_wait: Couldn't find procinfo for fd %d\n",
+ error ("wait_fd: Couldn't find procinfo for fd %d\n",
poll_list[i].fd);
}
#endif /* LOSING_POLL */
int syscallnum;
{
static char locbuf[32];
- char *rtnval;
- if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS)
- {
- rtnval = syscall_table[syscallnum];
- }
+ if (syscallnum >= 0 && syscallnum < MAX_SYSCALLS
+ && syscall_table[syscallnum] != NULL)
+ return syscall_table[syscallnum];
else
{
sprintf (locbuf, "syscall %u", syscallnum);
- rtnval = locbuf;
+ return locbuf;
}
- return (rtnval);
}
/*
#if defined (SYS_sys3b)
syscall_table[SYS_sys3b] = "sys3b";
#endif
+#if defined (SYS_sysi86)
+ syscall_table[SYS_sysi86] = "sysi86";
+#endif
#if defined (SYS_acct)
syscall_table[SYS_acct] = "acct";
#endif
#if defined (SYS_sproc)
syscall_table[SYS_sproc] = "sproc";
#endif
+#if defined (SYS_keyctl)
+ syscall_table[SYS_keyctl] = "keyctl";
+#endif
+#if defined (SYS_secsys)
+ syscall_table[SYS_secsys] = "secsys";
+#endif
+#if defined (SYS_filepriv)
+ syscall_table[SYS_filepriv] = "filepriv";
+#endif
+#if defined (SYS_procpriv)
+ syscall_table[SYS_procpriv] = "procpriv";
+#endif
+#if defined (SYS_devstat)
+ syscall_table[SYS_devstat] = "devstat";
+#endif
+#if defined (SYS_aclipc)
+ syscall_table[SYS_aclipc] = "aclipc";
+#endif
+#if defined (SYS_fdevstat)
+ syscall_table[SYS_fdevstat] = "fdevstat";
+#endif
+#if defined (SYS_flvlfile)
+ syscall_table[SYS_flvlfile] = "flvlfile";
+#endif
+#if defined (SYS_lvlfile)
+ syscall_table[SYS_lvlfile] = "lvlfile";
+#endif
+#if defined (SYS_lvlequal)
+ syscall_table[SYS_lvlequal] = "lvlequal";
+#endif
+#if defined (SYS_lvlproc)
+ syscall_table[SYS_lvlproc] = "lvlproc";
+#endif
+#if defined (SYS_lvlipc)
+ syscall_table[SYS_lvlipc] = "lvlipc";
+#endif
+#if defined (SYS_acl)
+ syscall_table[SYS_acl] = "acl";
+#endif
+#if defined (SYS_auditevt)
+ syscall_table[SYS_auditevt] = "auditevt";
+#endif
+#if defined (SYS_auditctl)
+ syscall_table[SYS_auditctl] = "auditctl";
+#endif
+#if defined (SYS_auditdmp)
+ syscall_table[SYS_auditdmp] = "auditdmp";
+#endif
+#if defined (SYS_auditlog)
+ syscall_table[SYS_auditlog] = "auditlog";
+#endif
+#if defined (SYS_auditbuf)
+ syscall_table[SYS_auditbuf] = "auditbuf";
+#endif
+#if defined (SYS_lvldom)
+ syscall_table[SYS_lvldom] = "lvldom";
+#endif
+#if defined (SYS_lvlvfs)
+ syscall_table[SYS_lvlvfs] = "lvlvfs";
+#endif
+#if defined (SYS_mkmld)
+ syscall_table[SYS_mkmld] = "mkmld";
+#endif
+#if defined (SYS_mldmode)
+ syscall_table[SYS_mldmode] = "mldmode";
+#endif
+#if defined (SYS_secadvise)
+ syscall_table[SYS_secadvise] = "secadvise";
+#endif
+#if defined (SYS_online)
+ syscall_table[SYS_online] = "online";
+#endif
+#if defined (SYS_setitimer)
+ syscall_table[SYS_setitimer] = "setitimer";
+#endif
+#if defined (SYS_getitimer)
+ syscall_table[SYS_getitimer] = "getitimer";
+#endif
+#if defined (SYS_gettimeofday)
+ syscall_table[SYS_gettimeofday] = "gettimeofday";
+#endif
+#if defined (SYS_settimeofday)
+ syscall_table[SYS_settimeofday] = "settimeofday";
+#endif
+#if defined (SYS_lwp_create)
+ syscall_table[SYS_lwp_create] = "_lwp_create";
+#endif
+#if defined (SYS_lwp_exit)
+ syscall_table[SYS_lwp_exit] = "_lwp_exit";
+#endif
+#if defined (SYS_lwp_wait)
+ syscall_table[SYS_lwp_wait] = "_lwp_wait";
+#endif
+#if defined (SYS_lwp_self)
+ syscall_table[SYS_lwp_self] = "_lwp_self";
+#endif
+#if defined (SYS_lwp_info)
+ syscall_table[SYS_lwp_info] = "_lwp_info";
+#endif
+#if defined (SYS_lwp_private)
+ syscall_table[SYS_lwp_private] = "_lwp_private";
+#endif
+#if defined (SYS_processor_bind)
+ syscall_table[SYS_processor_bind] = "processor_bind";
+#endif
+#if defined (SYS_processor_exbind)
+ syscall_table[SYS_processor_exbind] = "processor_exbind";
+#endif
+#if defined (SYS_prepblock)
+ syscall_table[SYS_prepblock] = "prepblock";
+#endif
+#if defined (SYS_block)
+ syscall_table[SYS_block] = "block";
+#endif
+#if defined (SYS_rdblock)
+ syscall_table[SYS_rdblock] = "rdblock";
+#endif
+#if defined (SYS_unblock)
+ syscall_table[SYS_unblock] = "unblock";
+#endif
+#if defined (SYS_cancelblock)
+ syscall_table[SYS_cancelblock] = "cancelblock";
+#endif
+#if defined (SYS_pread)
+ syscall_table[SYS_pread] = "pread";
+#endif
+#if defined (SYS_pwrite)
+ syscall_table[SYS_pwrite] = "pwrite";
+#endif
+#if defined (SYS_truncate)
+ syscall_table[SYS_truncate] = "truncate";
+#endif
+#if defined (SYS_ftruncate)
+ syscall_table[SYS_ftruncate] = "ftruncate";
+#endif
+#if defined (SYS_lwp_kill)
+ syscall_table[SYS_lwp_kill] = "_lwp_kill";
+#endif
+#if defined (SYS_sigwait)
+ syscall_table[SYS_sigwait] = "sigwait";
+#endif
+#if defined (SYS_fork1)
+ syscall_table[SYS_fork1] = "fork1";
+#endif
+#if defined (SYS_forkall)
+ syscall_table[SYS_forkall] = "forkall";
+#endif
+#if defined (SYS_modload)
+ syscall_table[SYS_modload] = "modload";
+#endif
+#if defined (SYS_moduload)
+ syscall_table[SYS_moduload] = "moduload";
+#endif
+#if defined (SYS_modpath)
+ syscall_table[SYS_modpath] = "modpath";
+#endif
+#if defined (SYS_modstat)
+ syscall_table[SYS_modstat] = "modstat";
+#endif
+#if defined (SYS_modadm)
+ syscall_table[SYS_modadm] = "modadm";
+#endif
+#if defined (SYS_getksym)
+ syscall_table[SYS_getksym] = "getksym";
+#endif
+#if defined (SYS_lwp_suspend)
+ syscall_table[SYS_lwp_suspend] = "_lwp_suspend";
+#endif
+#if defined (SYS_lwp_continue)
+ syscall_table[SYS_lwp_continue] = "_lwp_continue";
+#endif
+#if defined (SYS_priocntllst)
+ syscall_table[SYS_priocntllst] = "priocntllst";
+#endif
+#if defined (SYS_sleep)
+ syscall_table[SYS_sleep] = "sleep";
+#endif
+#if defined (SYS_lwp_sema_wait)
+ syscall_table[SYS_lwp_sema_wait] = "_lwp_sema_wait";
+#endif
+#if defined (SYS_lwp_sema_post)
+ syscall_table[SYS_lwp_sema_post] = "_lwp_sema_post";
+#endif
+#if defined (SYS_lwp_sema_trywait)
+ syscall_table[SYS_lwp_sema_trywait] = "lwp_sema_trywait";
+#endif
}
/*
unconditionally_kill_inferior (pi)
struct procinfo *pi;
{
- int signo;
int ppid;
+ struct proc_ctl pctl;
ppid = pi->prstatus.pr_ppid;
- signo = SIGKILL;
-
+#ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL
+ /* Alpha OSF/1-3.x procfs needs a clear of the current signal
+ before the PIOCKILL, otherwise it might generate a corrupted core
+ file for the inferior. */
+ ioctl (pi->ctl_fd, PIOCSSIG, NULL);
+#endif
#ifdef PROCFS_NEED_PIOCSSIG_FOR_KILL
- /* Alpha OSF/1 procfs needs a PIOCSSIG call with a SIGKILL signal
+ /* Alpha OSF/1-2.x procfs needs a PIOCSSIG call with a SIGKILL signal
to kill the inferior, otherwise it might remain stopped with a
pending SIGKILL.
We do not check the result of the PIOCSSIG, the inferior might have
struct siginfo newsiginfo;
memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
- newsiginfo.si_signo = signo;
+ newsiginfo.si_signo = SIGKILL;
newsiginfo.si_code = 0;
newsiginfo.si_errno = 0;
newsiginfo.si_pid = getpid ();
newsiginfo.si_uid = getuid ();
- ioctl (pi->fd, PIOCSSIG, &newsiginfo);
+ ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo);
}
-#else
- ioctl (pi->fd, PIOCKILL, &signo);
-#endif
+#else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
+ procfs_write_pckill (pi);
+#endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
close_proc_file (pi);
pi = current_procinfo;
- if (lseek(pi->fd, (off_t) memaddr, 0) == (off_t) memaddr)
+ if (lseek(pi->as_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr)
{
if (dowrite)
{
- nbytes = write (pi->fd, myaddr, len);
+ nbytes = write (pi->as_fd, myaddr, len);
}
else
{
- nbytes = read (pi->fd, myaddr, len);
+ nbytes = read (pi->as_fd, myaddr, len);
}
if (nbytes < 0)
{
int regno;
{
struct procinfo *pi;
+#ifdef PROCFS_USE_READ_WRITE
+ struct greg_ctl greg;
+ struct fpreg_ctl fpreg;
+#endif
pi = current_procinfo;
+#ifdef PROCFS_USE_READ_WRITE
if (regno != -1)
{
- ioctl (pi->fd, PIOCGREG, &pi->gregset);
+ procfs_read_status (pi);
+ memcpy ((char *) &greg.gregset,
+ (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs,
+ sizeof (gregset_t));
}
- fill_gregset (&pi->gregset, regno);
- ioctl (pi->fd, PIOCSREG, &pi->gregset);
+ fill_gregset (&greg.gregset, regno);
+ greg.cmd = PCSREG;
+ write (pi->ctl_fd, &greg, sizeof (greg));
+#else /* PROCFS_USE_READ_WRITE */
+ if (regno != -1)
+ {
+ ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset);
+ }
+ fill_gregset (&pi->gregset.gregset, regno);
+ ioctl (pi->ctl_fd, PIOCSREG, &pi->gregset.gregset);
+#endif /* PROCFS_USE_READ_WRITE */
#if defined (FP0_REGNUM)
target has floating point hardware. Since we ignore the returned value,
we'll never know whether it worked or not anyway. */
+#ifdef PROCFS_USE_READ_WRITE
+ if (regno != -1)
+ {
+ procfs_read_status (pi);
+ memcpy ((char *) &fpreg.fpregset,
+ (char *) &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs,
+ sizeof (fpregset_t));
+ }
+ fill_fpregset (&fpreg.fpregset, regno);
+ fpreg.cmd = PCSFPREG;
+ write (pi->ctl_fd, &fpreg, sizeof (fpreg));
+#else /* PROCFS_USE_READ_WRITE */
if (regno != -1)
{
- ioctl (pi->fd, PIOCGFPREG, &pi->fpregset);
+ ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset);
}
- fill_fpregset (&pi->fpregset, regno);
- ioctl (pi->fd, PIOCSFPREG, &pi->fpregset);
+ fill_fpregset (&pi->fpregset.fpregset, regno);
+ ioctl (pi->ctl_fd, PIOCSFPREG, &pi->fpregset.fpregset);
+#endif /* PROCFS_USE_READ_WRITE */
#endif /* FP0_REGNUM */
LOCAL FUNCTION
- create_procinfo - initialize access to a /proc entry
+ init_procinfo - setup a procinfo struct and connect it to a process
SYNOPSIS
- struct procinfo * create_procinfo (int pid)
+ struct procinfo * init_procinfo (int pid)
DESCRIPTION
Allocate a procinfo structure, open the /proc file and then set up the
set of signals and faults that are to be traced. Returns a pointer to
- the new procinfo structure.
+ the new procinfo structure.
NOTES
*/
static struct procinfo *
-create_procinfo (pid)
+init_procinfo (pid, kill)
int pid;
+ int kill;
{
- struct procinfo *pi;
+ struct procinfo *pi = (struct procinfo *)
+ xmalloc (sizeof (struct procinfo));
- pi = find_procinfo (pid, 1);
- if (pi != NULL)
- return pi; /* All done! It already exists */
+ memset ((char *) pi, 0, sizeof (*pi));
+ if (!open_proc_file (pid, pi, O_RDWR, 1))
+ proc_init_failed (pi, "can't open process file", kill);
- pi = (struct procinfo *) xmalloc (sizeof (struct procinfo));
+ /* open_proc_file may modify pid. */
- if (!open_proc_file (pid, pi, O_RDWR))
- proc_init_failed (pi, "can't open process file");
+ pid = pi -> pid;
/* Add new process to process info list */
add_fd (pi); /* Add to list for poll/select */
- memset ((char *) &pi->prrun, 0, sizeof (pi->prrun));
- prfillset (&pi->prrun.pr_trace);
- procfs_notice_signals (pid);
- prfillset (&pi->prrun.pr_fault);
- prdelset (&pi->prrun.pr_fault, FLTPAGE);
-
-#ifdef PROCFS_DONT_TRACE_IFAULT
- /* Tracing T_IFAULT under Alpha OSF/1 causes a `floating point enable'
- fault from which we cannot continue (except by disabling the
- tracing). We rely on the delivery of a SIGTRAP signal (which is traced)
- for the other T_IFAULT faults if tracing them is disabled. */
- prdelset (&pi->prrun.pr_fault, T_IFAULT);
+ /* Remember some things about the inferior that we will, or might, change
+ so that we can restore them when we detach. */
+#ifdef UNIXWARE
+ memcpy ((char *) &pi->saved_trace.sigset,
+ (char *) &pi->prstatus.pr_sigtrace, sizeof (sigset_t));
+ memcpy ((char *) &pi->saved_fltset.fltset,
+ (char *) &pi->prstatus.pr_flttrace, sizeof (fltset_t));
+ memcpy ((char *) &pi->saved_entryset.sysset,
+ (char *) &pi->prstatus.pr_sysentry, sizeof (sysset_t));
+ memcpy ((char *) &pi->saved_exitset.sysset,
+ (char *) &pi->prstatus.pr_sysexit, sizeof (sysset_t));
+
+ /* Set up trace and fault sets, as gdb expects them. */
+
+ prfillset (&sctl.sigset);
+ notice_signals (pi, &sctl);
+ prfillset (&fctl.fltset);
+ prdelset (&fctl.fltset, FLTPAGE);
+
+#else /* ! UNIXWARE */
+ ioctl (pi->ctl_fd, PIOCGTRACE, &pi->saved_trace.sigset);
+ ioctl (pi->ctl_fd, PIOCGHOLD, &pi->saved_sighold.sigset);
+ ioctl (pi->ctl_fd, PIOCGFAULT, &pi->saved_fltset.fltset);
+ ioctl (pi->ctl_fd, PIOCGENTRY, &pi->saved_entryset.sysset);
+ ioctl (pi->ctl_fd, PIOCGEXIT, &pi->saved_exitset.sysset);
+
+ /* Set up trace and fault sets, as gdb expects them. */
+
+ memset ((char *) &pi->prrun, 0, sizeof (pi->prrun));
+ prfillset (&pi->prrun.pr_trace);
+ procfs_notice_signals (pid);
+ prfillset (&pi->prrun.pr_fault);
+ prdelset (&pi->prrun.pr_fault, FLTPAGE);
+#ifdef PROCFS_DONT_TRACE_FAULTS
+ premptyset (&pi->prrun.pr_fault);
#endif
+#endif /* UNIXWARE */
+
+ if (!procfs_read_status (pi))
+ proc_init_failed (pi, "procfs_read_status failed", kill);
+
+ return pi;
+}
+
+/*
+
+LOCAL FUNCTION
+
+ create_procinfo - initialize access to a /proc entry
+
+SYNOPSIS
+
+ struct procinfo * create_procinfo (int pid)
+
+DESCRIPTION
+
+ Allocate a procinfo structure, open the /proc file and then set up the
+ set of signals and faults that are to be traced. Returns a pointer to
+ the new procinfo structure.
+
+NOTES
+
+ If proc_init_failed ever gets called, control returns to the command
+ processing loop via the standard error handling code.
+
+ */
+
+static struct procinfo *
+create_procinfo (pid)
+ int pid;
+{
+ struct procinfo *pi;
+ struct sig_ctl sctl;
+ struct flt_ctl fctl;
+
+ pi = find_procinfo (pid, 1);
+ if (pi != NULL)
+ return pi; /* All done! It already exists */
- if (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0)
- proc_init_failed (pi, "PIOCWSTOP failed");
+ pi = init_procinfo (pid, 1);
+
+#ifndef UNIXWARE
+/* A bug in Solaris (2.5 at least) causes PIOCWSTOP to hang on LWPs that are
+ already stopped, even if they all have PR_ASYNC set. */
+ if (!(pi->prstatus.pr_flags & PR_STOPPED))
+#endif
+ if (!procfs_write_pcwstop (pi))
+ proc_init_failed (pi, "procfs_write_pcwstop failed", 1);
- if (ioctl (pi->fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0)
- proc_init_failed (pi, "PIOCSFAULT failed");
+#ifdef PROCFS_USE_READ_WRITE
+ fctl.cmd = PCSFAULT;
+ if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0)
+ proc_init_failed (pi, "PCSFAULT failed", 1);
+#else
+ if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault) < 0)
+ proc_init_failed (pi, "PIOCSFAULT failed", 1);
+#endif
return pi;
}
/*
+LOCAL FUNCTION
+
+ procfs_exit_handler - handle entry into the _exit syscall
+
+SYNOPSIS
+
+ int procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp)
+
+DESCRIPTION
+
+ This routine is called when an inferior process enters the _exit()
+ system call. It continues the process, and then collects the exit
+ status and pid which are returned in *statvalp and *rtnvalp. After
+ that it returns non-zero to indicate that procfs_wait should wake up.
+
+NOTES
+ There is probably a better way to do this.
+
+ */
+
+static int
+procfs_exit_handler (pi, syscall_num, why, rtnvalp, statvalp)
+ struct procinfo *pi;
+ int syscall_num;
+ int why;
+ int *rtnvalp;
+ int *statvalp;
+{
+ struct procinfo *temp_pi, *next_pi;
+
+ pi->prrun.pr_flags = PRCFAULT;
+
+ if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
+ perror_with_name (pi->pathname);
+
+ if (attach_flag)
+ {
+ /* Claim it exited (don't call wait). */
+ if (info_verbose)
+ printf_filtered ("(attached process has exited)\n");
+ *statvalp = 0;
+ *rtnvalp = inferior_pid;
+ }
+ else
+ {
+ *rtnvalp = wait (statvalp);
+ if (*rtnvalp >= 0)
+ *rtnvalp = pi->pid;
+ }
+
+ /* Close ALL open proc file handles,
+ except the one that called SYS_exit. */
+ for (temp_pi = procinfo_list; temp_pi; temp_pi = next_pi)
+ {
+ next_pi = temp_pi->next;
+ if (temp_pi == pi)
+ continue; /* Handled below */
+ close_proc_file (temp_pi);
+ }
+ return 1;
+}
+
+/*
+
+LOCAL FUNCTION
+
+ procfs_exec_handler - handle exit from the exec family of syscalls
+
+SYNOPSIS
+
+ int procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp)
+
+DESCRIPTION
+
+ This routine is called when an inferior process is about to finish any
+ of the exec() family of system calls. It pretends that we got a
+ SIGTRAP (for compatibility with ptrace behavior), and returns non-zero
+ to tell procfs_wait to wake up.
+
+NOTES
+ This need for compatibility with ptrace is questionable. In the
+ future, it shouldn't be necessary.
+
+ */
+
+static int
+procfs_exec_handler (pi, syscall_num, why, rtnvalp, statvalp)
+ struct procinfo *pi;
+ int syscall_num;
+ int why;
+ int *rtnvalp;
+ int *statvalp;
+{
+ *statvalp = (SIGTRAP << 8) | 0177;
+
+ return 1;
+}
+
+#if defined(SYS_sproc) && !defined(UNIXWARE)
+/* IRIX lwp creation system call */
+
+/*
+
+LOCAL FUNCTION
+
+ procfs_sproc_handler - handle exit from the sproc syscall
+
+SYNOPSIS
+
+ int procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp)
+
+DESCRIPTION
+
+ This routine is called when an inferior process is about to finish an
+ sproc() system call. This is the system call that IRIX uses to create
+ a lightweight process. When the target process gets this event, we can
+ look at rval1 to find the new child processes ID, and create a new
+ procinfo struct from that.
+
+ After that, it pretends that we got a SIGTRAP, and returns non-zero
+ to tell procfs_wait to wake up. Subsequently, wait_for_inferior gets
+ woken up, sees the new process and continues it.
+
+NOTES
+ We actually never see the child exiting from sproc because we will
+ shortly stop the child with PIOCSTOP, which is then registered as the
+ event of interest.
+ */
+
+static int
+procfs_sproc_handler (pi, syscall_num, why, rtnvalp, statvalp)
+ struct procinfo *pi;
+ int syscall_num;
+ int why;
+ int *rtnvalp;
+ int *statvalp;
+{
+/* We've just detected the completion of an sproc system call. Now we need to
+ setup a procinfo struct for this thread, and notify the thread system of the
+ new arrival. */
+
+/* If sproc failed, then nothing interesting happened. Continue the process
+ and go back to sleep. */
+
+ if (pi->prstatus.pr_errno != 0)
+ {
+ pi->prrun.pr_flags &= PRSTEP;
+ pi->prrun.pr_flags |= PRCFAULT;
+
+ if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
+ perror_with_name (pi->pathname);
+
+ return 0;
+ }
+
+ /* At this point, the new thread is stopped at it's first instruction, and
+ the parent is stopped at the exit from sproc. */
+
+ /* Notify the caller of the arrival of a new thread. */
+ create_procinfo (pi->prstatus.pr_rval1);
+
+ *rtnvalp = pi->prstatus.pr_rval1;
+ *statvalp = (SIGTRAP << 8) | 0177;
+
+ return 1;
+}
+
+/*
+
+LOCAL FUNCTION
+
+ procfs_fork_handler - handle exit from the fork syscall
+
+SYNOPSIS
+
+ int procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp)
+
+DESCRIPTION
+
+ This routine is called when an inferior process is about to finish a
+ fork() system call. We will open up the new process, and then close
+ it, which releases it from the clutches of the debugger.
+
+ After that, we continue the target process as though nothing had
+ happened.
+
+NOTES
+ This is necessary for IRIX because we have to set PR_FORK in order
+ to catch the creation of lwps (via sproc()). When an actual fork
+ occurs, it becomes necessary to reset the forks debugger flags and
+ continue it because we can't hack multiple processes yet.
+ */
+
+static int
+procfs_fork_handler (pi, syscall_num, why, rtnvalp, statvalp)
+ struct procinfo *pi;
+ int syscall_num;
+ int why;
+ int *rtnvalp;
+ int *statvalp;
+{
+ struct procinfo *pitemp;
+
+/* At this point, we've detected the completion of a fork (or vfork) call in
+ our child. The grandchild is also stopped because we set inherit-on-fork
+ earlier. (Note that nobody has the grandchilds' /proc file open at this
+ point.) We will release the grandchild from the debugger by opening it's
+ /proc file and then closing it. Since run-on-last-close is set, the
+ grandchild continues on its' merry way. */
+
+
+ pitemp = create_procinfo (pi->prstatus.pr_rval1);
+ if (pitemp)
+ close_proc_file (pitemp);
+
+ if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
+ perror_with_name (pi->pathname);
+
+ return 0;
+}
+#endif /* SYS_sproc && !UNIXWARE */
+
+/*
+
+LOCAL FUNCTION
+
+ procfs_set_inferior_syscall_traps - setup the syscall traps
+
+SYNOPSIS
+
+ void procfs_set_inferior_syscall_traps (struct procinfo *pip)
+
+DESCRIPTION
+
+ Called for each "procinfo" (process, thread, or LWP) in the
+ inferior, to register for notification of and handlers for
+ syscall traps in the inferior.
+
+ */
+
+static void
+procfs_set_inferior_syscall_traps (pip)
+ struct procinfo *pip;
+{
+ procfs_set_syscall_trap (pip, SYS_exit, PROCFS_SYSCALL_ENTRY,
+ procfs_exit_handler);
+
+#ifndef PRFS_STOPEXEC
+#ifdef SYS_exec
+ procfs_set_syscall_trap (pip, SYS_exec, PROCFS_SYSCALL_EXIT,
+ procfs_exec_handler);
+#endif
+#ifdef SYS_execv
+ procfs_set_syscall_trap (pip, SYS_execv, PROCFS_SYSCALL_EXIT,
+ procfs_exec_handler);
+#endif
+#ifdef SYS_execve
+ procfs_set_syscall_trap (pip, SYS_execve, PROCFS_SYSCALL_EXIT,
+ procfs_exec_handler);
+#endif
+#endif /* PRFS_STOPEXEC */
+
+ /* Setup traps on exit from sproc() */
+
+#ifdef SYS_sproc
+ procfs_set_syscall_trap (pip, SYS_sproc, PROCFS_SYSCALL_EXIT,
+ procfs_sproc_handler);
+ procfs_set_syscall_trap (pip, SYS_fork, PROCFS_SYSCALL_EXIT,
+ procfs_fork_handler);
+#ifdef SYS_vfork
+ procfs_set_syscall_trap (pip, SYS_vfork, PROCFS_SYSCALL_EXIT,
+ procfs_fork_handler);
+#endif
+/* Turn on inherit-on-fork flag so that all children of the target process
+ start with tracing flags set. This allows us to trap lwp creation. Note
+ that we also have to trap on fork and vfork in order to disable all tracing
+ in the targets child processes. */
+
+ modify_inherit_on_fork_flag (pip->ctl_fd, 1);
+#endif
+
+#ifdef SYS_lwp_create
+ procfs_set_syscall_trap (pip, SYS_lwp_create, PROCFS_SYSCALL_EXIT,
+ procfs_lwp_creation_handler);
+#endif
+}
+
+/*
+
LOCAL FUNCTION
procfs_init_inferior - initialize target vector and access to a
SYNOPSIS
- void procfs_init_inferior (int pid)
+ int procfs_init_inferior (int pid)
DESCRIPTION
process immediately after the fork. It waits for the child to stop
on the return from the exec system call (the child itself takes care
of ensuring that this is set up), then sets up the set of signals
- and faults that are to be traced.
+ and faults that are to be traced. Returns the pid, which may have had
+ the thread-id added to it.
NOTES
*/
-static void
+static int
procfs_init_inferior (pid)
int pid;
{
+ struct procinfo *pip;
+
push_target (&procfs_ops);
- create_procinfo (pid);
- add_thread (pid); /* Setup initial thread */
+ pip = create_procinfo (pid);
+
+ procfs_set_inferior_syscall_traps (pip);
+
+ /* create_procinfo may change the pid, so we have to update inferior_pid
+ here before calling other gdb routines that need the right pid. */
+
+ pid = pip -> pid;
+ inferior_pid = pid;
+
+ add_thread (pip -> pid); /* Setup initial thread */
#ifdef START_INFERIOR_TRAPS_EXPECTED
startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
/* One trap to exec the shell, one to exec the program being debugged. */
startup_inferior (2);
#endif
+
+ return pid;
}
/*
procfs_notice_signals (pid)
int pid;
{
- int signo;
struct procinfo *pi;
+ struct sig_ctl sctl;
pi = find_procinfo (pid, 0);
+#ifdef UNIXWARE
+ premptyset (&sctl.sigset);
+#else
+ sctl.sigset = pi->prrun.pr_trace;
+#endif
+
+ notice_signals (pi, &sctl);
+
+#ifndef UNIXWARE
+ pi->prrun.pr_trace = sctl.sigset;
+#endif
+}
+
+static void
+notice_signals (pi, sctl)
+ struct procinfo *pi;
+ struct sig_ctl *sctl;
+{
+ 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)
{
- prdelset (&pi->prrun.pr_trace, signo);
+ prdelset (&sctl->sigset, signo);
}
else
{
- praddset (&pi->prrun.pr_trace, signo);
+ praddset (&sctl->sigset, signo);
}
}
- if (ioctl (pi->fd, PIOCSTRACE, &pi->prrun.pr_trace))
+#ifdef PROCFS_USE_READ_WRITE
+ sctl->cmd = PCSTRACE;
+ if (write (pi->ctl_fd, (char *) sctl, sizeof (struct sig_ctl)) < 0)
+#else
+ if (ioctl (pi->ctl_fd, PIOCSTRACE, &sctl->sigset))
+#endif
{
print_sys_errmsg ("PIOCSTRACE failed", errno);
}
static void
proc_set_exec_trap ()
{
- sysset_t exitset;
- sysset_t entryset;
- auto char procname[32];
+ struct sys_ctl exitset;
+ struct sys_ctl entryset;
+ char procname[MAX_PROC_NAME_SIZE];
int fd;
- sprintf (procname, PROC_NAME_FMT, getpid ());
+ sprintf (procname, CTL_PROC_NAME_FMT, getpid ());
+#ifdef UNIXWARE
+ if ((fd = open (procname, O_WRONLY)) < 0)
+#else
if ((fd = open (procname, O_RDWR)) < 0)
+#endif
{
perror (procname);
gdb_flush (gdb_stderr);
_exit (127);
}
- premptyset (&exitset);
- premptyset (&entryset);
+ premptyset (&exitset.sysset);
+ premptyset (&entryset.sysset);
-#ifdef PIOCSSPCACT
+#ifdef PRFS_STOPEXEC
/* Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
exits from exec system calls because of the user level loader. */
{
_exit (127);
}
}
-#else
+#else /* PRFS_STOPEXEC */
/* GW: Rationale...
Not all systems with /proc have all the exec* syscalls with the same
names. On the SGI, for example, there is no SYS_exec, but there
*is* a SYS_execv. So, we try to account for that. */
#ifdef SYS_exec
- praddset (&exitset, SYS_exec);
+ praddset (&exitset.sysset, SYS_exec);
#endif
#ifdef SYS_execve
- praddset (&exitset, SYS_execve);
+ praddset (&exitset.sysset, SYS_execve);
#endif
#ifdef SYS_execv
- praddset (&exitset, SYS_execv);
+ praddset (&exitset.sysset, SYS_execv);
#endif
- if (ioctl (fd, PIOCSEXIT, &exitset) < 0)
+#ifdef PROCFS_USE_READ_WRITE
+ exitset.cmd = PCSEXIT;
+ if (write (fd, (char *) &exitset, sizeof (struct sys_ctl)) < 0)
+#else
+ if (ioctl (fd, PIOCSEXIT, &exitset.sysset) < 0)
+#endif
{
perror (procname);
gdb_flush (gdb_stderr);
_exit (127);
}
-#endif
+#endif /* PRFS_STOPEXEC */
- praddset (&entryset, SYS_exit);
+ praddset (&entryset.sysset, SYS_exit);
- if (ioctl (fd, PIOCSENTRY, &entryset) < 0)
+#ifdef PROCFS_USE_READ_WRITE
+ entryset.cmd = PCSENTRY;
+ if (write (fd, (char *) &entryset, sizeof (struct sys_ctl)) < 0)
+#else
+ if (ioctl (fd, PIOCSENTRY, &entryset.sysset) < 0)
+#endif
{
perror (procname);
gdb_flush (gdb_stderr);
/* Turn off inherit-on-fork flag so that all grand-children of gdb
start with tracing flags cleared. */
-#if defined (PIOCRESET) /* New method */
- {
- long pr_flags;
- pr_flags = PR_FORK;
- ioctl (fd, PIOCRESET, &pr_flags);
- }
-#else
-#if defined (PIOCRFORK) /* Original method */
- ioctl (fd, PIOCRFORK, NULL);
-#endif
-#endif
+ modify_inherit_on_fork_flag (fd, 0);
/* Turn on run-on-last-close flag so that this process will not hang
if GDB goes away for some reason. */
-#if defined (PIOCSET) /* New method */
+ modify_run_on_last_close_flag (fd, 1);
+
+#ifdef PR_ASYNC
{
- long pr_flags;
- pr_flags = PR_RLC;
- (void) ioctl (fd, PIOCSET, &pr_flags);
- }
+ long pr_flags;
+ struct proc_ctl pctl;
+
+/* Solaris needs this to make procfs treat all threads seperately. Without
+ this, all threads halt whenever something happens to any thread. Since
+ GDB wants to control all this itself, it needs to set PR_ASYNC. */
+
+ pr_flags = PR_ASYNC;
+#ifdef PROCFS_USE_READ_WRITE
+ pctl.cmd = PCSET;
+ pctl.data = PR_FORK|PR_ASYNC;
+ write (fd, (char *) &pctl, sizeof (struct proc_ctl));
#else
-#if defined (PIOCSRLC) /* Original method */
- (void) ioctl (fd, PIOCSRLC, 0);
-#endif
+ ioctl (fd, PIOCSET, &pr_flags);
#endif
+ }
+#endif /* PR_ASYNC */
}
/*
the end of the mappings or the function returns nonzero.
*/
+#ifdef UNIXWARE
int
proc_iterate_over_mappings (func)
int (*func) PARAMS ((int, CORE_ADDR));
int nmap;
int fd;
int funcstat = 0;
- struct prmap *prmaps;
- struct prmap *prmap;
+ prmap_t *prmaps;
+ prmap_t *prmap;
struct procinfo *pi;
+ struct stat sbuf;
pi = current_procinfo;
- if (ioctl (pi->fd, PIOCNMAP, &nmap) == 0)
- {
+ if (fstat (pi->map_fd, &sbuf) < 0)
+ return 0;
+
+ nmap = sbuf.st_size / sizeof (prmap_t);
+ prmaps = (prmap_t *) alloca (nmap * sizeof(prmap_t));
+ if ((lseek (pi->map_fd, 0, SEEK_SET) == 0) &&
+ (read (pi->map_fd, (char *) prmaps, nmap * sizeof (prmap_t)) ==
+ (nmap * sizeof (prmap_t))))
+ {
+ int i = 0;
+ for (prmap = prmaps; i < nmap && funcstat == 0; ++prmap, ++i)
+ {
+ char name[sizeof ("/proc/1234567890/object") +
+ sizeof (prmap->pr_mapname)];
+ sprintf (name, "/proc/%d/object/%s", pi->pid, prmap->pr_mapname);
+ if ((fd = open (name, O_RDONLY)) == -1)
+ {
+ funcstat = 1;
+ break;
+ }
+ funcstat = (*func) (fd, (CORE_ADDR) prmap->pr_vaddr);
+ close (fd);
+ }
+ }
+ return (funcstat);
+}
+#else /* UNIXWARE */
+int
+proc_iterate_over_mappings (func)
+ int (*func) PARAMS ((int, CORE_ADDR));
+{
+ int nmap;
+ int fd;
+ int funcstat = 0;
+ struct prmap *prmaps;
+ struct prmap *prmap;
+ struct procinfo *pi;
+
+ pi = current_procinfo;
+
+ if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0)
+ {
prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
- if (ioctl (pi->fd, PIOCMAP, prmaps) == 0)
+ if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0)
{
for (prmap = prmaps; prmap -> pr_size && funcstat == 0; ++prmap)
{
}
return (funcstat);
}
+#endif /* UNIXWARE */
#if 0 /* Currently unused */
/*
pi = current_procinfo;
- if (ioctl (pi->fd, PIOCNMAP, &nmap) == 0)
+ if (ioctl (pi->map_fd, PIOCNMAP, &nmap) == 0)
{
prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
- if (ioctl (pi->fd, PIOCMAP, prmaps) == 0)
+ if (ioctl (pi->map_fd, PIOCMAP, prmaps) == 0)
{
for (prmap = prmaps; prmap -> pr_size; ++prmap)
{
{
int fd = -1;
- if ((fd = ioctl (pi->fd, PIOCOPENM, (caddr_t *) &addr)) < 0)
+ if ((fd = ioctl (pi->ctl_fd, PIOCOPENM, (caddr_t *) &addr)) < 0)
{
if (complain)
{
gdb_flush (gdb_stdout);
}
- do_attach (pid);
- inferior_pid = pid;
+ inferior_pid = pid = do_attach (pid);
push_target (&procfs_ops);
}
do_attach (pid)
int pid;
{
- int result;
struct procinfo *pi;
+ struct sig_ctl sctl;
+ struct flt_ctl fctl;
+ int nlwp, *lwps;
- pi = (struct procinfo *) xmalloc (sizeof (struct procinfo));
-
- if (!open_proc_file (pid, pi, O_RDWR))
- {
- free (pi);
- perror_with_name (pi->pathname);
- /* NOTREACHED */
- }
-
- /* Add new process to process info list */
-
- pi->next = procinfo_list;
- procinfo_list = pi;
+ pi = init_procinfo (pid, 0);
- add_fd (pi); /* Add to list for poll/select */
+#ifdef PIOCLWPIDS
+ nlwp = pi->prstatus.pr_nlwp;
+ lwps = alloca ((2 * nlwp + 2) * sizeof (id_t));
- /* Get current status of process and if it is not already stopped,
- then stop it. Remember whether or not it was stopped when we first
- examined it. */
-
- if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- close_proc_file (pi);
- error ("PIOCSTATUS failed");
- }
- if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
+ if (ioctl (pi->ctl_fd, PIOCLWPIDS, lwps))
{
- pi->was_stopped = 1;
+ print_sys_errmsg (pi -> pathname, errno);
+ error ("PIOCLWPIDS failed");
}
- else
+#else /* PIOCLWPIDS */
+ nlwp = 1;
+ lwps = alloca ((2 * nlwp + 2) * sizeof *lwps);
+ lwps[0] = 0;
+#endif
+ for (; nlwp > 0; nlwp--, lwps++)
{
- pi->was_stopped = 0;
- if (1 || query ("Process is currently running, stop it? "))
+ /* First one has already been created above. */
+ if ((pi = find_procinfo ((*lwps << 16) | pid, 1)) == 0)
+ pi = init_procinfo ((*lwps << 16) | pid, 0);
+
+#ifdef UNIXWARE
+ if (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP))
+#else
+ if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
+#endif
{
- /* Make it run again when we close it. */
-#if defined (PIOCSET) /* New method */
- {
- long pr_flags;
- pr_flags = PR_RLC;
- result = ioctl (pi->fd, PIOCSET, &pr_flags);
- }
+ pi->was_stopped = 1;
+ }
+ else
+ {
+ pi->was_stopped = 0;
+ if (1 || query ("Process is currently running, stop it? "))
+ {
+ long cmd;
+ /* Make it run again when we close it. */
+ modify_run_on_last_close_flag (pi->ctl_fd, 1);
+#ifdef PROCFS_USE_READ_WRITE
+ cmd = PCSTOP;
+ if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
#else
-#if defined (PIOCSRLC) /* Original method */
- result = ioctl (pi->fd, PIOCSRLC, 0);
+ if (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) < 0)
#endif
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ close_proc_file (pi);
+ error ("PIOCSTOP failed");
+ }
+#ifdef UNIXWARE
+ if (!procfs_read_status (pi))
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ close_proc_file (pi);
+ error ("procfs_read_status failed");
+ }
#endif
- if (result < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- close_proc_file (pi);
- error ("PIOCSRLC or PIOCSET failed");
+ pi->nopass_next_sigstop = 1;
}
- if (ioctl (pi->fd, PIOCSTOP, &pi->prstatus) < 0)
+ else
{
- print_sys_errmsg (pi->pathname, errno);
- close_proc_file (pi);
- error ("PIOCSTOP failed");
+ printf_unfiltered ("Ok, gdb will wait for %s to stop.\n",
+ target_pid_to_str (pi->pid));
}
- pi->nopass_next_sigstop = 1;
}
- else
+
+#ifdef PROCFS_USE_READ_WRITE
+ fctl.cmd = PCSFAULT;
+ if (write (pi->ctl_fd, (char *) &fctl, sizeof (struct flt_ctl)) < 0)
+ print_sys_errmsg ("PCSFAULT failed", errno);
+#else /* PROCFS_USE_READ_WRITE */
+ if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->prrun.pr_fault))
{
- printf_unfiltered ("Ok, gdb will wait for %s to stop.\n", target_pid_to_str (pid));
+ print_sys_errmsg ("PIOCSFAULT failed", errno);
}
+ if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->prrun.pr_trace))
+ {
+ print_sys_errmsg ("PIOCSTRACE failed", errno);
+ }
+ add_thread (pi->pid);
+ procfs_set_inferior_syscall_traps (pi);
}
-
- /* Remember some things about the inferior that we will, or might, change
- so that we can restore them when we detach. */
-
- ioctl (pi->fd, PIOCGTRACE, &pi->saved_trace);
- ioctl (pi->fd, PIOCGHOLD, &pi->saved_sighold);
- ioctl (pi->fd, PIOCGFAULT, &pi->saved_fltset);
- ioctl (pi->fd, PIOCGENTRY, &pi->saved_entryset);
- ioctl (pi->fd, PIOCGEXIT, &pi->saved_exitset);
-
- /* Set up trace and fault sets, as gdb expects them. */
-
- memset (&pi->prrun, 0, sizeof (pi->prrun));
- prfillset (&pi->prrun.pr_trace);
- procfs_notice_signals (pid);
- prfillset (&pi->prrun.pr_fault);
- prdelset (&pi->prrun.pr_fault, FLTPAGE);
-
-#ifdef PROCFS_DONT_TRACE_IFAULT
- /* Tracing T_IFAULT under Alpha OSF/1 causes a `floating point enable'
- fault from which we cannot continue (except by disabling the
- tracing). We rely on the delivery of a SIGTRAP signal (which is traced)
- for the other T_IFAULT faults if tracing them is disabled. */
- prdelset (&pi->prrun.pr_fault, T_IFAULT);
-#endif
-
- if (ioctl (pi->fd, PIOCSFAULT, &pi->prrun.pr_fault))
- {
- print_sys_errmsg ("PIOCSFAULT failed", errno);
- }
- if (ioctl (pi->fd, PIOCSTRACE, &pi->prrun.pr_trace))
- {
- print_sys_errmsg ("PIOCSTRACE failed", errno);
- }
+#endif /* PROCFS_USE_READ_WRITE */
attach_flag = 1;
- return (pid);
+ return (pi->pid);
}
/*
do_detach (signal)
int signal;
{
- int result;
struct procinfo *pi;
- pi = current_procinfo;
-
- if (signal)
- {
- set_proc_siginfo (pi, signal);
- }
- if (ioctl (pi->fd, PIOCSEXIT, &pi->saved_exitset) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOCSEXIT failed.\n");
- }
- if (ioctl (pi->fd, PIOCSENTRY, &pi->saved_entryset) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOCSENTRY failed.\n");
- }
- if (ioctl (pi->fd, PIOCSTRACE, &pi->saved_trace) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOCSTRACE failed.\n");
- }
- if (ioctl (pi->fd, PIOCSHOLD, &pi->saved_sighold) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOSCHOLD failed.\n");
- }
- if (ioctl (pi->fd, PIOCSFAULT, &pi->saved_fltset) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOCSFAULT failed.\n");
- }
- if (ioctl (pi->fd, PIOCSTATUS, &pi->prstatus) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOCSTATUS failed.\n");
- }
- else
+ for (pi = procinfo_list; pi; pi = pi->next)
{
- if (signal || (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)))
+ if (signal)
+ {
+ set_proc_siginfo (pi, signal);
+ }
+#ifdef PROCFS_USE_READ_WRITE
+ pi->saved_exitset.cmd = PCSEXIT;
+ if (write (pi->ctl_fd, (char *) &pi->saved_exitset,
+ sizeof (struct sys_ctl)) < 0)
+#else
+ if (ioctl (pi->ctl_fd, PIOCSEXIT, &pi->saved_exitset.sysset) < 0)
+#endif
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ printf_unfiltered ("PIOCSEXIT failed.\n");
+ }
+#ifdef PROCFS_USE_READ_WRITE
+ pi->saved_entryset.cmd = PCSENTRY;
+ if (write (pi->ctl_fd, (char *) &pi->saved_entryset,
+ sizeof (struct sys_ctl)) < 0)
+#else
+ if (ioctl (pi->ctl_fd, PIOCSENTRY, &pi->saved_entryset.sysset) < 0)
+#endif
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ printf_unfiltered ("PIOCSENTRY failed.\n");
+ }
+#ifdef PROCFS_USE_READ_WRITE
+ pi->saved_trace.cmd = PCSTRACE;
+ if (write (pi->ctl_fd, (char *) &pi->saved_trace,
+ sizeof (struct sig_ctl)) < 0)
+#else
+ if (ioctl (pi->ctl_fd, PIOCSTRACE, &pi->saved_trace.sigset) < 0)
+#endif
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ printf_unfiltered ("PIOCSTRACE failed.\n");
+ }
+#ifndef UNIXWARE
+ if (ioctl (pi->ctl_fd, PIOCSHOLD, &pi->saved_sighold.sigset) < 0)
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ printf_unfiltered ("PIOSCHOLD failed.\n");
+ }
+#endif
+#ifdef PROCFS_USE_READ_WRITE
+ pi->saved_fltset.cmd = PCSFAULT;
+ if (write (pi->ctl_fd, (char *) &pi->saved_fltset,
+ sizeof (struct flt_ctl)) < 0)
+#else
+ if (ioctl (pi->ctl_fd, PIOCSFAULT, &pi->saved_fltset.fltset) < 0)
+#endif
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ printf_unfiltered ("PIOCSFAULT failed.\n");
+ }
+ if (!procfs_read_status (pi))
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ printf_unfiltered ("procfs_read_status failed.\n");
+ }
+ else
{
- if (signal || !pi->was_stopped ||
- query ("Was stopped when attached, make it runnable again? "))
+#ifdef UNIXWARE
+ if (signal || (pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)))
+#else
+ if (signal || (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)))
+#endif
{
- /* Clear any pending signal if we want to detach without
- a signal. */
- if (signal == 0)
- set_proc_siginfo (pi, signal);
+ long cmd;
+ struct proc_ctl pctl;
- /* Clear any fault that might have stopped it. */
- if (ioctl (pi->fd, PIOCCFAULT, 0))
+ if (signal || !pi->was_stopped ||
+ query ("Was stopped when attached, make it runnable again? "))
{
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOCCFAULT failed.\n");
- }
-
- /* Make it run again when we close it. */
-#if defined (PIOCSET) /* New method */
- {
- long pr_flags;
- pr_flags = PR_RLC;
- result = ioctl (pi->fd, PIOCSET, &pr_flags);
- }
+ /* Clear any pending signal if we want to detach without
+ a signal. */
+ if (signal == 0)
+ set_proc_siginfo (pi, signal);
+
+ /* Clear any fault that might have stopped it. */
+#ifdef PROCFS_USE_READ_WRITE
+ cmd = PCCFAULT;
+ if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
#else
-#if defined (PIOCSRLC) /* Original method */
- result = ioctl (pi->fd, PIOCSRLC, 0);
-#endif
+ if (ioctl (pi->ctl_fd, PIOCCFAULT, 0))
#endif
- if (result)
- {
- print_sys_errmsg (pi->pathname, errno);
- printf_unfiltered ("PIOCSRLC or PIOCSET failed.\n");
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ printf_unfiltered ("PIOCCFAULT failed.\n");
+ }
+
+ /* Make it run again when we close it. */
+
+ modify_run_on_last_close_flag (pi->ctl_fd, 1);
}
}
}
+ close_proc_file (pi);
}
- close_proc_file (pi);
attach_flag = 0;
}
FIXME: Investigate why wait() seems to have problems with programs
being control by /proc routines. */
-
static int
procfs_wait (pid, ourstatus)
int pid;
int checkerr = 0;
int rtnval = -1;
struct procinfo *pi;
+ struct proc_ctl pctl;
+#ifndef UNIXWARE
if (pid != -1) /* Non-specific process? */
pi = NULL;
else
{
wait_again:
+ if (pi)
+ pi->had_event = 0;
+
pi = wait_fd ();
}
for (pi = procinfo_list; pi; pi = pi->next)
if (pi->pid == pid && pi->had_event)
break;
+#endif
if (!pi && !checkerr)
goto wait_again;
+#ifdef UNIXWARE
+ if (!checkerr && !(pi->prstatus.pr_lwp.pr_flags & (PR_STOPPED | PR_ISTOP)))
+#else
if (!checkerr && !(pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP)))
+#endif
{
- if (ioctl (pi->fd, PIOCWSTOP, &pi->prstatus) < 0)
+ if (!procfs_write_pcwstop (pi))
{
checkerr++;
}
- }
+ }
if (checkerr)
{
if (errno == ENOENT)
{
+ /* XXX Fixme -- what to do if attached? Can't call wait... */
rtnval = wait (&statval);
- if (rtnval != inferior_pid)
+ if ((rtnval) != (inferior_pid))
{
print_sys_errmsg (pi->pathname, errno);
- error ("PIOCWSTOP, wait failed, returned %d", rtnval);
+ error ("procfs_wait: wait failed, returned %d", rtnval);
/* NOTREACHED */
}
}
}
else if (pi->prstatus.pr_flags & (PR_STOPPED | PR_ISTOP))
{
+#ifdef UNIXWARE
rtnval = pi->prstatus.pr_pid;
+ why = pi->prstatus.pr_lwp.pr_why;
+ what = pi->prstatus.pr_lwp.pr_what;
+#else
+ rtnval = pi->pid;
why = pi->prstatus.pr_why;
what = pi->prstatus.pr_what;
+#endif
switch (why)
{
statval = (what << 8) | 0177;
break;
case PR_SYSENTRY:
- if (what != SYS_exit)
- error ("PR_SYSENTRY, unknown system call %d", what);
-
- pi->prrun.pr_flags = PRCFAULT;
-
- if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0)
- perror_with_name (pi->pathname);
-
- rtnval = wait (&statval);
-
- break;
case PR_SYSEXIT:
- switch (what)
- {
-#ifdef SYS_exec
- case SYS_exec:
-#endif
-#ifdef SYS_execve
- case SYS_execve:
-#endif
-#ifdef SYS_execv
- case SYS_execv:
-#endif
- statval = (SIGTRAP << 8) | 0177;
- break;
-#ifdef SYS_sproc
- case SYS_sproc:
-/* We've just detected the completion of an sproc system call. Now we need to
- setup a procinfo struct for this thread, and notify the thread system of the
- new arrival. */
-
-/* If sproc failed, then nothing interesting happened. Continue the process and
- go back to sleep. */
+ {
+ int i;
+ int found_handler = 0;
- if (pi->prstatus.pr_errno != 0)
+ for (i = 0; i < pi->num_syscall_handlers; i++)
+ if (pi->syscall_handlers[i].syscall_num == what)
{
- pi->prrun.pr_flags &= PRSTEP;
- pi->prrun.pr_flags |= PRCFAULT;
+ found_handler = 1;
+ if (!pi->syscall_handlers[i].func (pi, what, why,
+ &rtnval, &statval))
+ goto wait_again;
- if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0)
- perror_with_name (pi->pathname);
-
- goto wait_again;
+ break;
}
-/* At this point, the new thread is stopped at it's first instruction, and
- the parent is stopped at the exit from sproc. */
-
-/* Notify the caller of the arrival of a new thread. */
- create_procinfo (pi->prstatus.pr_rval1);
-
- rtnval = pi->prstatus.pr_rval1;
- statval = (SIGTRAP << 8) | 0177;
-
- break;
- case SYS_fork:
-#ifdef SYS_vfork
- case SYS_vfork:
-#endif
-/* At this point, we've detected the completion of a fork (or vfork) call in
- our child. The grandchild is also stopped because we set inherit-on-fork
- earlier. (Note that nobody has the grandchilds' /proc file open at this
- point.) We will release the grandchild from the debugger by opening it's
- /proc file and then closing it. Since run-on-last-close is set, the
- grandchild continues on its' merry way. */
-
- {
- struct procinfo *pitemp;
-
- pitemp = create_procinfo (pi->prstatus.pr_rval1);
- if (pitemp)
- close_proc_file (pitemp);
-
- if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0)
- perror_with_name (pi->pathname);
- }
- goto wait_again;
-#endif /* SYS_sproc */
-
- default:
- error ("PIOCSTATUS (PR_SYSEXIT): Unknown system call %d", what);
- }
+ if (!found_handler)
+ if (why == PR_SYSENTRY)
+ error ("PR_SYSENTRY, unhandled system call %d", what);
+ else
+ error ("PR_SYSEXIT, unhandled system call %d", what);
+ }
break;
case PR_REQUESTED:
statval = (SIGSTOP << 8) | 0177;
case FLTBPT:
case FLTTRACE:
statval = (SIGTRAP << 8) | 0177;
- break;
+ break;
case FLTSTACK:
case FLTACCESS:
case FLTBOUNDS:
/* Use the signal which the kernel assigns. This is better than
trying to second-guess it from the fault. In fact, I suspect
that FLTACCESS can be either SIGSEGV or SIGBUS. */
+#ifdef UNIXWARE
+ statval = ((pi->prstatus.pr_lwp.pr_info.si_signo) << 8) | 0177;
+#else
statval = ((pi->prstatus.pr_info.si_signo) << 8) | 0177;
+#endif
break;
}
break;
/* Stop all the other threads when any of them stops. */
{
- struct procinfo *procinfo;
+ struct procinfo *procinfo, *next_pi;
- for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
+ for (procinfo = procinfo_list; procinfo; procinfo = next_pi)
{
+ next_pi = procinfo->next;
if (!procinfo->had_event)
- if (ioctl (procinfo->fd, PIOCSTOP, &procinfo->prstatus) < 0)
- {
- print_sys_errmsg (procinfo->pathname, errno);
- error ("PIOCSTOP failed");
- }
+ {
+#ifdef PROCFS_USE_READ_WRITE
+ cmd = PCSTOP;
+ if (write (pi->ctl_fd, (char *) &cmd, sizeof (long)) < 0)
+ {
+ print_sys_errmsg (procinfo->pathname, errno);
+ error ("PCSTOP failed");
+ }
+#else
+ /* A bug in Solaris (2.5) causes us to hang when trying to
+ stop a stopped process. So, we have to check first in
+ order to avoid the hang. */
+ if (!procfs_read_status (procinfo))
+ {
+ /* The LWP has apparently terminated. */
+ if (info_verbose)
+ printf_filtered ("LWP %d doesn't respond.\n",
+ (procinfo->pid >> 16) & 0xffff);
+ close_proc_file (procinfo);
+ continue;
+ }
+
+ if (!(procinfo->prstatus.pr_flags & PR_STOPPED))
+ if (ioctl (procinfo->ctl_fd, PIOCSTOP, &procinfo->prstatus)
+ < 0)
+ {
+ print_sys_errmsg (procinfo->pathname, errno);
+ warning ("PIOCSTOP failed");
+ }
+#endif
+ }
}
}
}
if (rtnval == -1) /* No more children to wait for */
{
- fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing.\n");
+ warning ("Child process unexpectedly missing");
/* Claim it exited with unknown signal. */
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
{
struct siginfo newsiginfo;
struct siginfo *sip;
+ struct sigi_ctl sictl;
#ifdef PROCFS_DONT_PIOCSSIG_CURSIG
/* With Alpha OSF/1 procfs, the kernel gets really confused if it
receives a PIOCSSIG with a signal identical to the current signal,
it messes up the current signal. Work around the kernel bug. */
+#ifdef UNIXWARE
+ if (signo == pip -> prstatus.pr_lwp.pr_cursig)
+#else
if (signo == pip -> prstatus.pr_cursig)
+#endif
return;
#endif
+#ifdef UNIXWARE
+ if (signo == pip->prstatus.pr_lwp.pr_info.si_signo)
+ {
+ memcpy ((char *) &sictl.siginfo, (char *) &pip->prstatus.pr_lwp.pr_info,
+ sizeof (siginfo_t));
+ }
+#else
if (signo == pip -> prstatus.pr_info.si_signo)
{
sip = &pip -> prstatus.pr_info;
}
+#endif
else
{
+#ifdef UNIXWARE
+ siginfo_t *sip = &sictl.siginfo;
+ memset ((char *) sip, 0, sizeof (siginfo_t));
+#else
memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
sip = &newsiginfo;
+#endif
sip -> si_signo = signo;
sip -> si_code = 0;
sip -> si_errno = 0;
sip -> si_pid = getpid ();
sip -> si_uid = getuid ();
}
- if (ioctl (pip -> fd, PIOCSSIG, sip) < 0)
+#ifdef PROCFS_USE_READ_WRITE
+ sictl.cmd = PCSSIG;
+ if (write (pip->ctl_fd, (char *) &sictl, sizeof (struct sigi_ctl)) < 0)
+#else
+ if (ioctl (pip->ctl_fd, PIOCSSIG, sip) < 0)
+#endif
{
print_sys_errmsg (pip -> pathname, errno);
warning ("PIOCSSIG failed");
enum target_signal signo;
{
int signal_to_pass;
- struct procinfo *pi, *procinfo;
+ struct procinfo *pi, *procinfo, *next_pi;
+ struct proc_ctl pctl;
pi = find_procinfo (pid == -1 ? inferior_pid : pid, 0);
errno = 0;
+#ifdef UNIXWARE
+ pctl.cmd = PCRUN;
+ pctl.data = PRCFAULT;
+#else
pi->prrun.pr_flags = PRSTRACE | PRSFAULT | PRCFAULT;
+#endif
#if 0
/* It should not be necessary. If the user explicitly changes the value,
an inferior to continue running at the same time as gdb. (FIXME?) */
signal_to_pass = 0;
else if (signo == TARGET_SIGNAL_TSTP
+#ifdef UNIXWARE
+ && pi->prstatus.pr_lwp.pr_cursig == SIGTSTP
+ && pi->prstatus.pr_lwp.pr_action.sa_handler == SIG_DFL
+#else
&& pi->prstatus.pr_cursig == SIGTSTP
- && pi->prstatus.pr_action.sa_handler == SIG_DFL)
+ && pi->prstatus.pr_action.sa_handler == SIG_DFL
+#endif
+ )
/* We are about to pass the inferior a SIGTSTP whose action is
SIG_DFL. The SIG_DFL action for a SIGTSTP is to stop
}
else
{
+#ifdef UNIXWARE
+ pctl.data |= PRCSIG;
+#else
pi->prrun.pr_flags |= PRCSIG;
+#endif
}
pi->nopass_next_sigstop = 0;
if (step)
{
+#ifdef UNIXWARE
+ pctl.data |= PRSTEP;
+#else
pi->prrun.pr_flags |= PRSTEP;
+#endif
}
- if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0)
+ pi->had_event = 0;
+ /* Don't try to start a process unless it's stopped on an
+ `event of interest'. Doing so will cause errors. */
+
+ if (!procfs_read_status (pi))
{
- perror_with_name (pi->pathname);
- /* NOTREACHED */
+ /* The LWP has apparently terminated. */
+ if (info_verbose)
+ printf_filtered ("LWP %d doesn't respond.\n",
+ (pi->pid >> 16) & 0xffff);
+ close_proc_file (pi);
+ }
+ else
+ {
+#ifdef PROCFS_USE_READ_WRITE
+ if (write (pi->ctl_fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
+#else
+ if ((pi->prstatus.pr_flags & PR_ISTOP)
+ && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
+#endif
+ {
+ /* The LWP has apparently terminated. */
+ if (info_verbose)
+ printf_filtered ("LWP %d doesn't respond.\n",
+ (pi->pid >> 16) & 0xffff);
+ close_proc_file (pi);
+ }
}
- pi->had_event = 0;
-
- /* Continue all the other threads that haven't had an event of
- interest. */
+ /* Continue all the other threads that haven't had an event of interest.
+ Also continue them if they have NOPASS_NEXT_SIGSTOP set; this is only
+ set by do_attach, and means this is the first resume after an attach.
+ All threads were CSTOP'd by do_attach, and should be resumed now. */
if (pid == -1)
- for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
+ for (procinfo = procinfo_list; procinfo; procinfo = next_pi)
{
- if (pi != procinfo && !procinfo->had_event)
- {
- procinfo->prrun.pr_flags &= PRSTEP;
- procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG;
- ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus);
- if (ioctl (procinfo->fd, PIOCRUN, &procinfo->prrun) < 0)
- {
- if (ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus) < 0)
- {
- fprintf_unfiltered(gdb_stderr, "PIOCSTATUS failed, errno=%d\n", errno);
- }
- print_sys_errmsg (procinfo->pathname, errno);
- error ("PIOCRUN failed");
- }
- ioctl (procinfo->fd, PIOCSTATUS, &procinfo->prstatus);
- }
- }
-}
-
+ next_pi = procinfo->next;
+ if (pi != procinfo)
+ if (!procinfo->had_event ||
+ (procinfo->nopass_next_sigstop && signo == TARGET_SIGNAL_STOP))
+ {
+ procinfo->had_event = procinfo->nopass_next_sigstop = 0;
+#ifdef PROCFS_USE_READ_WRITE
+ pctl.data = PRCFAULT | PRCSIG;
+ if (write (procinfo->ctl_fd, (char *) &pctl,
+ sizeof (struct proc_ctl)) < 0)
+ {
+ if (!procfs_read_status (procinfo))
+ fprintf_unfiltered(gdb_stderr,
+ "procfs_read_status failed, errno=%d\n",
+ errno);
+ print_sys_errmsg (procinfo->pathname, errno);
+ error ("PCRUN failed");
+ }
+ procfs_read_status (procinfo);
+#else
+ procinfo->prrun.pr_flags &= PRSTEP;
+ procinfo->prrun.pr_flags |= PRCFAULT | PRCSIG;
+ if (!procfs_read_status (procinfo))
+ {
+ /* The LWP has apparently terminated. */
+ if (info_verbose)
+ printf_filtered ("LWP %d doesn't respond.\n",
+ (procinfo->pid >> 16) & 0xffff);
+ close_proc_file (procinfo);
+ continue;
+ }
+
+ /* Don't try to start a process unless it's stopped on an
+ `event of interest'. Doing so will cause errors. */
+
+ if ((procinfo->prstatus.pr_flags & PR_ISTOP)
+ && ioctl (procinfo->ctl_fd, PIOCRUN, &procinfo->prrun) < 0)
+ {
+ if (!procfs_read_status (procinfo))
+ fprintf_unfiltered(gdb_stderr,
+ "procfs_read_status failed, errno=%d\n",
+ errno);
+ print_sys_errmsg (procinfo->pathname, errno);
+ warning ("PIOCRUN failed");
+ }
+ }
+ procfs_read_status (procinfo);
+#endif
+ }
+}
+
/*
LOCAL FUNCTION
pi = current_procinfo;
- if (ioctl (pi->fd, PIOCGREG, &pi->gregset) != -1)
+#ifdef UNIXWARE
+ if (procfs_read_status (pi))
+ {
+ supply_gregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs);
+#if defined (FP0_REGNUM)
+ supply_fpregset (&pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs);
+#endif
+ }
+#else /* UNIXWARE */
+ if (ioctl (pi->ctl_fd, PIOCGREG, &pi->gregset.gregset) != -1)
{
- supply_gregset (&pi->gregset);
+ supply_gregset (&pi->gregset.gregset);
}
#if defined (FP0_REGNUM)
- if (ioctl (pi->fd, PIOCGFPREG, &pi->fpregset) != -1)
+ if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset.fpregset) != -1)
{
- supply_fpregset (&pi->fpregset);
+ supply_fpregset (&pi->fpregset.fpregset);
}
#endif
+#endif /* UNIXWARE */
}
/*
LOCAL FUNCTION
- proc_init_failed - called whenever /proc access initialization
+ proc_init_failed - called when /proc access initialization fails
fails
SYNOPSIS
- static void proc_init_failed (struct procinfo *pi, char *why)
+ static void proc_init_failed (struct procinfo *pi,
+ char *why, int kill_p)
DESCRIPTION
This function is called whenever initialization of access to a /proc
entry fails. It prints a suitable error message, does some cleanup,
and then invokes the standard error processing routine which dumps
- us back into the command loop.
+ us back into the command loop. If KILL_P is true, sends SIGKILL.
*/
static void
-proc_init_failed (pi, why)
+proc_init_failed (pi, why, kill_p)
struct procinfo *pi;
char *why;
+ int kill_p;
{
print_sys_errmsg (pi->pathname, errno);
- kill (pi->pid, SIGKILL);
+ if (kill_p)
+ kill (pi->pid, SIGKILL);
close_proc_file (pi);
error (why);
/* NOTREACHED */
{
struct procinfo *procinfo;
+ delete_thread (pip->pid); /* remove thread from GDB's thread list */
remove_fd (pip); /* Remove fd from poll/select list */
- close (pip -> fd);
+ close (pip->ctl_fd);
+#ifdef HAVE_MULTIPLE_PROC_FDS
+ close (pip->as_fd);
+ close (pip->status_fd);
+ close (pip->map_fd);
+#endif
free (pip -> pathname);
if (procinfo_list == pip)
procinfo_list = pip->next;
else
- for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
- if (procinfo->next == pip)
- procinfo->next = pip->next;
-
- free (pip);
+ {
+ for (procinfo = procinfo_list; procinfo; procinfo = procinfo->next)
+ {
+ if (procinfo->next == pip)
+ {
+ procinfo->next = pip->next;
+ break;
+ }
+ }
+ free (pip);
+ }
}
/*
Note that the pathname is left intact, even when the open fails,
so that callers can use it to construct meaningful error messages
rather than just "file open failed".
+
+ Note that for Solaris, the process-id also includes an LWP-id, so we
+ actually attempt to open that. If we are handed a pid with a 0 LWP-id,
+ then we will ask the kernel what it is and add it to the pid. Hence,
+ the pid can be changed by us.
*/
static int
-open_proc_file (pid, pip, mode)
+open_proc_file (pid, pip, mode, control)
int pid;
struct procinfo *pip;
int mode;
+ int control;
{
+ int tmp, tmpfd;
+
pip -> next = NULL;
pip -> had_event = 0;
- pip -> pathname = xmalloc (32);
+ pip -> pathname = xmalloc (MAX_PROC_NAME_SIZE);
pip -> pid = pid;
- sprintf (pip -> pathname, PROC_NAME_FMT, pid);
- if ((pip -> fd = open (pip -> pathname, mode)) < 0)
+#ifndef PIOCOPENLWP
+ tmp = pid;
+#else
+ tmp = pid & 0xffff;
+#endif
+
+#ifdef HAVE_MULTIPLE_PROC_FDS
+ sprintf (pip->pathname, STATUS_PROC_NAME_FMT, tmp);
+ if ((pip->status_fd = open (pip->pathname, O_RDONLY)) < 0)
+ {
+ return 0;
+ }
+
+ sprintf (pip->pathname, AS_PROC_NAME_FMT, tmp);
+ if ((pip->as_fd = open (pip->pathname, O_RDWR)) < 0)
+ {
+ close (pip->status_fd);
+ return 0;
+ }
+
+ sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp);
+ if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0)
+ {
+ close (pip->status_fd);
+ close (pip->as_fd);
+ return 0;
+ }
+
+ sprintf (pip->pathname, MAP_PROC_NAME_FMT, tmp);
+ if ((pip->map_fd = open (pip->pathname, O_RDONLY)) < 0)
+ {
+ close (pip->status_fd);
+ close (pip->as_fd);
+ return 0;
+ }
+
+ if (control)
+ {
+ sprintf (pip->pathname, CTL_PROC_NAME_FMT, tmp);
+ if ((pip->ctl_fd = open (pip->pathname, O_WRONLY)) < 0)
+ {
+ close (pip->status_fd);
+ close (pip->as_fd);
+ close (pip->map_fd);
+ return 0;
+ }
+ }
+
+#else /* HAVE_MULTIPLE_PROC_FDS */
+ sprintf (pip -> pathname, CTL_PROC_NAME_FMT, tmp);
+
+ if ((tmpfd = open (pip -> pathname, mode)) < 0)
return 0;
+#ifndef PIOCOPENLWP
+ pip -> ctl_fd = tmpfd;
+ pip -> as_fd = tmpfd;
+ pip -> map_fd = tmpfd;
+ pip -> status_fd = tmpfd;
+#else
+ tmp = (pid >> 16) & 0xffff; /* Extract thread id */
+
+ if (tmp == 0)
+ { /* Don't know thread id yet */
+ if (ioctl (tmpfd, PIOCSTATUS, &pip -> prstatus) < 0)
+ {
+ print_sys_errmsg (pip -> pathname, errno);
+ close (tmpfd);
+ error ("open_proc_file: PIOCSTATUS failed");
+ }
+
+ tmp = pip -> prstatus.pr_who; /* Get thread id from prstatus_t */
+ pip -> pid = (tmp << 16) | pid; /* Update pip */
+ }
+
+ if ((pip -> ctl_fd = ioctl (tmpfd, PIOCOPENLWP, &tmp)) < 0)
+ {
+ close (tmpfd);
+ return 0;
+ }
+
+#ifdef PIOCSET /* New method */
+ {
+ long pr_flags;
+ pr_flags = PR_ASYNC;
+ ioctl (pip -> ctl_fd, PIOCSET, &pr_flags);
+ }
+#endif
+
+ /* keep extra fds in sync */
+ pip->as_fd = pip->ctl_fd;
+ pip->map_fd = pip->ctl_fd;
+ pip->status_fd = pip->ctl_fd;
+
+ close (tmpfd); /* All done with main pid */
+#endif /* PIOCOPENLWP */
+
+#endif /* HAVE_MULTIPLE_PROC_FDS */
+
return 1;
}
int summary;
{
struct trans *transp;
+#ifdef UNIXWARE
+ long flags = pip->prstatus.pr_flags | pip->prstatus.pr_lwp.pr_flags;
+#else
+ long flags = pip->prstatus.pr_flags;
+#endif
printf_filtered ("%-32s", "Process status flags:");
if (!summary)
}
for (transp = pr_flag_table; transp -> name != NULL; transp++)
{
- if (pip -> prstatus.pr_flags & transp -> value)
+ if (flags & transp -> value)
{
if (summary)
{
int why;
int what;
+#ifdef UNIXWARE
+ why = pip -> prstatus.pr_lwp.pr_why;
+ what = pip -> prstatus.pr_lwp.pr_what;
+#else
why = pip -> prstatus.pr_why;
what = pip -> prstatus.pr_what;
+#endif
+#ifdef UNIXWARE
+ if (pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED)
+#else
if (pip -> prstatus.pr_flags & PR_STOPPED)
+#endif
{
printf_filtered ("%-32s", "Reason for stopping:");
if (!summary)
{
struct siginfo *sip;
+#ifdef UNIXWARE
+ if ((pip -> prstatus.pr_lwp.pr_flags & PR_STOPPED) &&
+ (pip -> prstatus.pr_lwp.pr_why == PR_SIGNALLED ||
+ pip -> prstatus.pr_lwp.pr_why == PR_FAULTED))
+#else
if ((pip -> prstatus.pr_flags & PR_STOPPED) &&
(pip -> prstatus.pr_why == PR_SIGNALLED ||
pip -> prstatus.pr_why == PR_FAULTED))
+#endif
{
printf_filtered ("%-32s", "Additional signal/fault info:");
+#ifdef UNIXWARE
+ sip = &pip -> prstatus.pr_lwp.pr_info;
+#else
sip = &pip -> prstatus.pr_info;
+#endif
if (summary)
{
printf_filtered ("%s ", signalname (sip -> si_signo));
(sip -> si_signo == SIGSEGV) ||
(sip -> si_signo == SIGBUS))
{
- printf_filtered ("addr=%#x ", sip -> si_addr);
+ printf_filtered ("addr=%#lx ",
+ (unsigned long) sip -> si_addr);
}
else if ((sip -> si_signo == SIGCHLD))
{
if ((sip -> si_signo == SIGILL) ||
(sip -> si_signo == SIGFPE))
{
- printf_filtered ("\t%-16#x %s.\n", sip -> si_addr,
+ printf_filtered ("\t%#-16lx %s.\n",
+ (unsigned long) sip -> si_addr,
"Address of faulting instruction");
}
else if ((sip -> si_signo == SIGSEGV) ||
(sip -> si_signo == SIGBUS))
{
- printf_filtered ("\t%-16#x %s.\n", sip -> si_addr,
+ printf_filtered ("\t%#-16lx %s.\n",
+ (unsigned long) sip -> si_addr,
"Address of faulting memory reference");
}
else if ((sip -> si_signo == SIGCHLD))
}
#endif
- if (ioctl (pip -> fd, PIOCGENTRY, &pip -> entryset) < 0)
+#ifndef UNIXWARE
+ if (ioctl (pip -> ctl_fd, PIOCGENTRY, &pip -> entryset) < 0)
{
print_sys_errmsg (pip -> pathname, errno);
error ("PIOCGENTRY failed");
}
- if (ioctl (pip -> fd, PIOCGEXIT, &pip -> exitset) < 0)
+ if (ioctl (pip -> ctl_fd, PIOCGEXIT, &pip -> exitset) < 0)
{
print_sys_errmsg (pip -> pathname, errno);
error ("PIOCGEXIT failed");
}
+#endif
printf_filtered ("System call tracing information:\n\n");
{
QUIT;
if (syscall_table[syscallnum] != NULL)
- {
- printf_filtered ("\t%-12s ", syscall_table[syscallnum]);
- printf_filtered ("%-8s ",
- prismember (&pip -> entryset, syscallnum)
- ? "on" : "off");
- printf_filtered ("%-8s ",
- prismember (&pip -> exitset, syscallnum)
- ? "on" : "off");
- printf_filtered ("\n");
- }
- }
+ printf_filtered ("\t%-12s ", syscall_table[syscallnum]);
+ else
+ printf_filtered ("\t%-12d ", syscallnum);
+
+#ifdef UNIXWARE
+ printf_filtered ("%-8s ",
+ prismember (&pip->prstatus.pr_sysentry, syscallnum)
+ ? "on" : "off");
+ printf_filtered ("%-8s ",
+ prismember (&pip->prstatus.pr_sysexit, syscallnum)
+ ? "on" : "off");
+#else
+ printf_filtered ("%-8s ",
+ prismember (&pip -> entryset, syscallnum)
+ ? "on" : "off");
+ printf_filtered ("%-8s ",
+ prismember (&pip -> exitset, syscallnum)
+ ? "on" : "off");
+#endif
+ printf_filtered ("\n");
+ }
printf_filtered ("\n");
}
}
if (!summary)
{
- if (ioctl (pip -> fd, PIOCGTRACE, &pip -> trace) < 0)
+#ifndef PROCFS_USE_READ_WRITE
+ if (ioctl (pip -> ctl_fd, PIOCGTRACE, &pip -> trace) < 0)
{
print_sys_errmsg (pip -> pathname, errno);
error ("PIOCGTRACE failed");
}
+#endif
printf_filtered ("Disposition of signals:\n\n");
printf_filtered ("\t%-15s %-8s %-8s %-8s %s\n\n",
{
QUIT;
printf_filtered ("\t%-15s ", signalname (signo));
+#ifdef UNIXWARE
+ printf_filtered ("%-8s ",
+ prismember (&pip -> prstatus.pr_sigtrace, signo)
+ ? "on" : "off");
+ printf_filtered ("%-8s ",
+ prismember (&pip -> prstatus.pr_lwp.pr_context.uc_sigmask, signo)
+ ? "on" : "off");
+#else
printf_filtered ("%-8s ",
prismember (&pip -> trace, signo)
? "on" : "off");
printf_filtered ("%-8s ",
prismember (&pip -> prstatus.pr_sighold, signo)
? "on" : "off");
+#endif
+#ifdef UNIXWARE
+ if (prismember (&pip->prstatus.pr_sigpend, signo) ||
+ prismember (&pip->prstatus.pr_lwp.pr_lwppend, signo))
+ printf_filtered("%-8s ", "yes");
+ else
+ printf_filtered("%-8s ", "no");
+#else /* UNIXWARE */
#ifdef PROCFS_SIGPEND_OFFSET
/* Alpha OSF/1 numbers the pending signals from 1. */
printf_filtered ("%-8s ",
prismember (&pip -> prstatus.pr_sigpend, signo)
? "yes" : "no");
#endif
+#endif /* UNIXWARE */
printf_filtered (" %s\n", safe_strsignal (signo));
}
printf_filtered ("\n");
if (!summary)
{
- if (ioctl (pip -> fd, PIOCGFAULT, &pip -> fltset) < 0)
+#ifndef UNIXWARE
+ if (ioctl (pip -> ctl_fd, PIOCGFAULT, &pip->fltset.fltset) < 0)
{
print_sys_errmsg (pip -> pathname, errno);
error ("PIOCGFAULT failed");
}
+#endif
printf_filtered ("Current traced hardware fault set:\n\n");
printf_filtered ("\t%-12s %-8s\n", "Fault", "Trace");
{
QUIT;
printf_filtered ("\t%-12s ", transp -> name);
- printf_filtered ("%-8s", prismember (&pip -> fltset, transp -> value)
+#ifdef UNIXWARE
+ printf_filtered ("%-8s", prismember (&pip->prstatus.pr_flttrace, transp -> value)
+ ? "on" : "off");
+#else
+ printf_filtered ("%-8s", prismember (&pip->fltset.fltset, transp -> value)
? "on" : "off");
+#endif
printf_filtered ("\n");
}
printf_filtered ("\n");
int nmap;
struct prmap *prmaps;
struct prmap *prmap;
+ struct stat sbuf;
if (!summary)
{
" Size",
" Offset",
"Flags");
- if (ioctl (pip -> fd, PIOCNMAP, &nmap) == 0)
+#ifdef PROCFS_USE_READ_WRITE
+ if (fstat (pip->map_fd, &sbuf) == 0)
+ {
+ nmap = sbuf.st_size / sizeof (prmap_t);
+ prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
+ if ((lseek (pip->map_fd, 0, SEEK_SET) == 0) &&
+ (read (pip->map_fd, (char *) prmaps,
+ nmap * sizeof (*prmaps)) == (nmap * sizeof (*prmaps))))
+ {
+ int i = 0;
+ for (prmap = prmaps; i < nmap; ++prmap, ++i)
+#else
+ if (ioctl (pip -> ctl_fd, PIOCNMAP, &nmap) == 0)
+ {
+ prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
+ if (ioctl (pip -> ctl_fd, PIOCMAP, prmaps) == 0)
+ {
+ for (prmap = prmaps; prmap -> pr_size; ++prmap)
+#endif /* PROCFS_USE_READ_WRITE */
+ {
+#ifdef BFD_HOST_64_BIT
+ printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n",
+#else
+ printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n",
+#endif
+ (unsigned long)prmap -> pr_vaddr,
+ (unsigned long)prmap -> pr_vaddr
+ + prmap -> pr_size - 1,
+ prmap -> pr_size,
+ prmap -> pr_off,
+ mappingflags (prmap -> pr_mflags));
+ }
+ }
+ }
+ printf_filtered ("\n");
+ }
+}
+
+/*
+
+LOCAL FUNCTION
+
+ info_proc -- implement the "info proc" command
+
+SYNOPSIS
+
+ void info_proc (char *args, int from_tty)
+
+DESCRIPTION
+
+ Implement gdb's "info proc" command by using the /proc interface
+ to print status information about any currently running process.
+
+ Examples of the use of "info proc" are:
+
+ info proc (prints summary info for current inferior)
+ info proc 123 (prints summary info for process with pid 123)
+ info proc mappings (prints address mappings)
+ info proc times (prints process/children times)
+ info proc id (prints pid, ppid, gid, sid, etc)
+ FIXME: i proc id not implemented.
+ info proc status (prints general process state info)
+ FIXME: i proc status not implemented.
+ info proc signals (prints info about signal handling)
+ info proc all (prints all info)
+
+ */
+
+static void
+info_proc (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ int pid;
+ struct procinfo *pip;
+ struct cleanup *old_chain;
+ char **argv;
+ int argsize;
+ int summary = 1;
+ int flags = 0;
+ int syscalls = 0;
+ int signals = 0;
+ int faults = 0;
+ int mappings = 0;
+ int times = 0;
+ int id = 0;
+ int status = 0;
+ int all = 0;
+ int nlwp;
+ int *lwps;
+
+ old_chain = make_cleanup (null_cleanup, 0);
+
+ /* Default to using the current inferior if no pid specified. Note
+ that inferior_pid may be 0, hence we set okerr. */
+
+ pid = inferior_pid & 0x7fffffff; /* strip off sol-thread bit */
+ if (!(pip = find_procinfo (pid, 1))) /* inferior_pid no good? */
+ pip = procinfo_list; /* take first available */
+ pid = pid & 0xffff; /* extract "real" pid */
+
+ if (args != NULL)
+ {
+ if ((argv = buildargv (args)) == NULL)
+ {
+ nomem (0);
+ }
+ make_cleanup (freeargv, (char *) argv);
+
+ while (*argv != NULL)
+ {
+ argsize = strlen (*argv);
+ if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0)
+ {
+ summary = 0;
+ all = 1;
+ }
+ else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0)
+ {
+ summary = 0;
+ faults = 1;
+ }
+ else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0)
+ {
+ summary = 0;
+ flags = 1;
+ }
+ else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0)
+ {
+ summary = 0;
+ id = 1;
+ }
+ else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0)
+ {
+ summary = 0;
+ mappings = 1;
+ }
+ else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0)
+ {
+ summary = 0;
+ signals = 1;
+ }
+ else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0)
+ {
+ summary = 0;
+ status = 1;
+ }
+ else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0)
+ {
+ summary = 0;
+ syscalls = 1;
+ }
+ else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0)
+ {
+ summary = 0;
+ times = 1;
+ }
+ else if ((pid = atoi (*argv)) > 0)
+ {
+ pip = (struct procinfo *) xmalloc (sizeof (struct procinfo));
+ memset (pip, 0, sizeof (*pip));
+
+ pip->pid = pid;
+ if (!open_proc_file (pid, pip, O_RDONLY, 0))
+ {
+ perror_with_name (pip -> pathname);
+ /* NOTREACHED */
+ }
+ pid = pip->pid;
+ make_cleanup (close_proc_file, pip);
+ }
+ else if (**argv != '\000')
+ {
+ error ("Unrecognized or ambiguous keyword `%s'.", *argv);
+ }
+ argv++;
+ }
+ }
+
+ /* If we don't have a valid open process at this point, then we have no
+ inferior or didn't specify a specific pid. */
+
+ if (!pip)
+ {
+ error ("\
+No process. Start debugging a program or specify an explicit process ID.");
+ }
+
+ if (!procfs_read_status (pip))
+ {
+ print_sys_errmsg (pip -> pathname, errno);
+ error ("procfs_read_status failed");
+ }
+
+#ifndef PROCFS_USE_READ_WRITE
+#ifdef PIOCLWPIDS
+ nlwp = pip->prstatus.pr_nlwp;
+ lwps = alloca ((2 * nlwp + 2) * sizeof (*lwps));
+
+ if (ioctl (pip->ctl_fd, PIOCLWPIDS, lwps))
+ {
+ print_sys_errmsg (pip -> pathname, errno);
+ error ("PIOCLWPIDS failed");
+ }
+#else /* PIOCLWPIDS */
+ nlwp = 1;
+ lwps = alloca ((2 * nlwp + 2) * sizeof *lwps);
+ lwps[0] = 0;
+#endif /* PIOCLWPIDS */
+
+ for (; nlwp > 0; nlwp--, lwps++)
+ {
+ pip = find_procinfo ((*lwps << 16) | pid, 1);
+
+ if (!pip)
+ {
+ pip = (struct procinfo *) xmalloc (sizeof (struct procinfo));
+ memset (pip, 0, sizeof (*pip));
+ if (!open_proc_file ((*lwps << 16) | pid, pip, O_RDONLY, 0))
+ continue;
+
+ make_cleanup (close_proc_file, pip);
+
+ if (!procfs_read_status (pip))
+ {
+ print_sys_errmsg (pip -> pathname, errno);
+ error ("procfs_read_status failed");
+ }
+ }
+
+#endif /* PROCFS_USE_READ_WRITE */
+
+ /* Print verbose information of the requested type(s), or just a summary
+ of the information for all types. */
+
+ printf_filtered ("\nInformation for %s.%d:\n\n", pip -> pathname, *lwps);
+ if (summary || all || flags)
+ {
+ info_proc_flags (pip, summary);
+ }
+ if (summary || all)
+ {
+ info_proc_stop (pip, summary);
+ supply_gregset (&pip->prstatus.pr_reg);
+ printf_filtered ("PC: ");
+ print_address (read_pc (), gdb_stdout);
+ printf_filtered ("\n");
+ }
+ if (summary || all || signals || faults)
+ {
+ info_proc_siginfo (pip, summary);
+ }
+ if (summary || all || syscalls)
+ {
+ info_proc_syscalls (pip, summary);
+ }
+ if (summary || all || mappings)
+ {
+ info_proc_mappings (pip, summary);
+ }
+ if (summary || all || signals)
+ {
+ info_proc_signals (pip, summary);
+ }
+ if (summary || all || faults)
+ {
+ info_proc_faults (pip, summary);
+ }
+ printf_filtered ("\n");
+
+ /* All done, deal with closing any temporary process info structure,
+ freeing temporary memory , etc. */
+
+ do_cleanups (old_chain);
+#ifndef PROCFS_USE_READ_WRITE
+ }
+#endif
+}
+
+/*
+
+LOCAL FUNCTION
+
+ modify_inherit_on_fork_flag - Change the inherit-on-fork flag
+
+SYNOPSIS
+
+ void modify_inherit_on_fork_flag (fd, flag)
+
+DESCRIPTION
+
+ Call this routine to modify the inherit-on-fork flag. This routine is
+ just a nice wrapper to hide the #ifdefs needed by various systems to
+ control this flag.
+
+ */
+
+static void
+modify_inherit_on_fork_flag (fd, flag)
+ int fd;
+ int flag;
+{
+#if defined (PIOCSET) || defined (PCSET)
+ long pr_flags;
+#endif
+ int retval = 0;
+ struct proc_ctl pctl;
+
+#if defined (PIOCSET) || defined (PCSET) /* New method */
+ pr_flags = PR_FORK;
+ if (flag)
+ {
+#ifdef PROCFS_USE_READ_WRITE
+ pctl.cmd = PCSET;
+ pctl.data = PR_FORK;
+ if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
+ retval = -1;
+#else
+ retval = ioctl (fd, PIOCSET, &pr_flags);
+#endif
+ }
+ else
+ {
+#ifdef PROCFS_USE_READ_WRITE
+ pctl.cmd = PCRESET;
+ pctl.data = PR_FORK;
+ if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
+ retval = -1;
+#else
+ retval = ioctl (fd, PIOCRESET, &pr_flags);
+#endif
+ }
+
+#else
+#ifdef PIOCSFORK /* Original method */
+ if (flag)
+ {
+ retval = ioctl (fd, PIOCSFORK, NULL);
+ }
+ else
+ {
+ retval = ioctl (fd, PIOCRFORK, NULL);
+ }
+#else
+ Neither PR_FORK nor PIOCSFORK exist!!!
+#endif
+#endif
+
+ if (!retval)
+ return;
+
+ print_sys_errmsg ("modify_inherit_on_fork_flag", errno);
+ error ("PIOCSFORK or PR_FORK modification failed");
+}
+
+/*
+
+LOCAL FUNCTION
+
+ modify_run_on_last_close_flag - Change the run-on-last-close flag
+
+SYNOPSIS
+
+ void modify_run_on_last_close_flag (fd, flag)
+
+DESCRIPTION
+
+ Call this routine to modify the run-on-last-close flag. This routine
+ is just a nice wrapper to hide the #ifdefs needed by various systems to
+ control this flag.
+
+ */
+
+static void
+modify_run_on_last_close_flag (fd, flag)
+ int fd;
+ int flag;
+{
+#if defined (PIOCSET) || defined (PCSET)
+ long pr_flags;
+#endif
+ int retval = 0;
+ struct proc_ctl pctl;
+
+#if defined (PIOCSET) || defined (PCSET) /* New method */
+ pr_flags = PR_RLC;
+ if (flag)
+ {
+#ifdef PROCFS_USE_READ_WRITE
+ pctl.cmd = PCSET;
+ pctl.data = PR_RLC;
+ if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
+ retval = -1;
+#else
+ retval = ioctl (fd, PIOCSET, &pr_flags);
+#endif
+ }
+ else
+ {
+#ifdef PROCFS_USE_READ_WRITE
+ pctl.cmd = PCRESET;
+ pctl.data = PR_RLC;
+ if (write (fd, (char *) &pctl, sizeof (struct proc_ctl)) < 0)
+ retval = -1;
+#else
+ retval = ioctl (fd, PIOCRESET, &pr_flags);
+#endif
+ }
+
+#else
+#ifdef PIOCSRLC /* Original method */
+ if (flag)
+ retval = ioctl (fd, PIOCSRLC, NULL);
+ else
+ retval = ioctl (fd, PIOCRRLC, NULL);
+#else
+ Neither PR_RLC nor PIOCSRLC exist!!!
+#endif
+#endif
+
+ if (!retval)
+ return;
+
+ print_sys_errmsg ("modify_run_on_last_close_flag", errno);
+ error ("PIOCSRLC or PR_RLC modification failed");
+}
+
+/*
+
+LOCAL FUNCTION
+
+ procfs_clear_syscall_trap -- Deletes the trap for the specified system call.
+
+SYNOPSIS
+
+ void procfs_clear_syscall_trap (struct procinfo *, int syscall_num, int errok)
+
+DESCRIPTION
+
+ This function function disables traps for the specified system call.
+ errok is non-zero if errors should be ignored.
+ */
+
+static void
+procfs_clear_syscall_trap (pi, syscall_num, errok)
+ struct procinfo *pi;
+ int syscall_num;
+ int errok;
+{
+ sysset_t sysset;
+ int goterr, i;
+
+ goterr = ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0;
+
+ if (goterr && !errok)
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCGENTRY failed");
+ }
+
+ if (!goterr)
+ {
+ prdelset (&sysset, syscall_num);
+
+ if ((ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0) && !errok)
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCSENTRY failed");
+ }
+ }
+
+ goterr = ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0;
+
+ if (goterr && !errok)
+ {
+ procfs_clear_syscall_trap (pi, syscall_num, 1);
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCGEXIT failed");
+ }
+
+ if (!goterr)
+ {
+ praddset (&sysset, syscall_num);
+
+ if ((ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0) && !errok)
{
- prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
- if (ioctl (pip -> fd, PIOCMAP, prmaps) == 0)
- {
- for (prmap = prmaps; prmap -> pr_size; ++prmap)
- {
-#ifdef BFD_HOST_64_BIT
- printf_filtered (" %#18lx %#18lx %#10x %#10x %7s\n",
-#else
- printf_filtered ("\t%#10lx %#10lx %#10x %#10x %7s\n",
-#endif
- (unsigned long)prmap -> pr_vaddr,
- (unsigned long)prmap -> pr_vaddr
- + prmap -> pr_size - 1,
- prmap -> pr_size,
- prmap -> pr_off,
- mappingflags (prmap -> pr_mflags));
- }
- }
+ procfs_clear_syscall_trap (pi, syscall_num, 1);
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCSEXIT failed");
}
- printf_filtered ("\n");
}
+
+ if (!pi->syscall_handlers)
+ {
+ if (!errok)
+ error ("procfs_clear_syscall_trap: syscall_handlers is empty");
+ return;
+ }
+
+ /* Remove handler func from the handler list */
+
+ for (i = 0; i < pi->num_syscall_handlers; i++)
+ if (pi->syscall_handlers[i].syscall_num == syscall_num)
+ {
+ if (i + 1 != pi->num_syscall_handlers)
+ { /* Not the last entry.
+ Move subsequent entries fwd. */
+ memcpy (&pi->syscall_handlers[i], &pi->syscall_handlers[i + 1],
+ (pi->num_syscall_handlers - i - 1)
+ * sizeof (struct procfs_syscall_handler));
+ }
+
+ pi->syscall_handlers = xrealloc (pi->syscall_handlers,
+ (pi->num_syscall_handlers - 1)
+ * sizeof (struct procfs_syscall_handler));
+ pi->num_syscall_handlers--;
+ return;
+ }
+
+ if (!errok)
+ error ("procfs_clear_syscall_trap: Couldn't find handler for sys call %d",
+ syscall_num);
}
/*
LOCAL FUNCTION
- info_proc -- implement the "info proc" command
+ procfs_set_syscall_trap -- arrange for a function to be called when the
+ child executes the specified system call.
SYNOPSIS
- void info_proc (char *args, int from_tty)
+ void procfs_set_syscall_trap (struct procinfo *, int syscall_num, int flags,
+ syscall_func_t *function)
DESCRIPTION
- Implement gdb's "info proc" command by using the /proc interface
- to print status information about any currently running process.
-
- Examples of the use of "info proc" are:
-
- info proc (prints summary info for current inferior)
- info proc 123 (prints summary info for process with pid 123)
- info proc mappings (prints address mappings)
- info proc times (prints process/children times)
- info proc id (prints pid, ppid, gid, sid, etc)
- FIXME: i proc id not implemented.
- info proc status (prints general process state info)
- FIXME: i proc status not implemented.
- info proc signals (prints info about signal handling)
- info proc all (prints all info)
-
+ This function sets up an entry and/or exit trap for the specified system
+ call. When the child executes the specified system call, your function
+ will be called with the call #, a flag that indicates entry or exit, and
+ pointers to rtnval and statval (which are used by procfs_wait). The
+ function should return non-zero if something interesting happened, zero
+ otherwise.
*/
static void
-info_proc (args, from_tty)
- char *args;
- int from_tty;
+procfs_set_syscall_trap (pi, syscall_num, flags, func)
+ struct procinfo *pi;
+ int syscall_num;
+ int flags;
+ syscall_func_t *func;
{
- int pid;
- struct procinfo *pip;
- struct cleanup *old_chain;
- char **argv;
- int argsize;
- int summary = 1;
- int flags = 0;
- int syscalls = 0;
- int signals = 0;
- int faults = 0;
- int mappings = 0;
- int times = 0;
- int id = 0;
- int status = 0;
- int all = 0;
-
- old_chain = make_cleanup (null_cleanup, 0);
-
- /* Default to using the current inferior if no pid specified. Note
- that inferior_pid may be 0, hence we set okerr. */
-
- pip = find_procinfo (inferior_pid, 1);
+ sysset_t sysset;
- if (args != NULL)
+ if (flags & PROCFS_SYSCALL_ENTRY)
{
- if ((argv = buildargv (args)) == NULL)
+ if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysset) < 0)
{
- nomem (0);
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCGENTRY failed");
}
- make_cleanup (freeargv, (char *) argv);
- while (*argv != NULL)
- {
- argsize = strlen (*argv);
- if (argsize >= 1 && strncmp (*argv, "all", argsize) == 0)
- {
- summary = 0;
- all = 1;
- }
- else if (argsize >= 2 && strncmp (*argv, "faults", argsize) == 0)
- {
- summary = 0;
- faults = 1;
- }
- else if (argsize >= 2 && strncmp (*argv, "flags", argsize) == 0)
- {
- summary = 0;
- flags = 1;
- }
- else if (argsize >= 1 && strncmp (*argv, "id", argsize) == 0)
- {
- summary = 0;
- id = 1;
- }
- else if (argsize >= 1 && strncmp (*argv, "mappings", argsize) == 0)
- {
- summary = 0;
- mappings = 1;
- }
- else if (argsize >= 2 && strncmp (*argv, "signals", argsize) == 0)
- {
- summary = 0;
- signals = 1;
- }
- else if (argsize >= 2 && strncmp (*argv, "status", argsize) == 0)
- {
- summary = 0;
- status = 1;
- }
- else if (argsize >= 2 && strncmp (*argv, "syscalls", argsize) == 0)
- {
- summary = 0;
- syscalls = 1;
- }
- else if (argsize >= 1 && strncmp (*argv, "times", argsize) == 0)
- {
- summary = 0;
- times = 1;
- }
- else if ((pid = atoi (*argv)) > 0)
- {
- pip = (struct procinfo *) xmalloc (sizeof (struct procinfo));
- memset (pip, 0, sizeof (*pip));
+ praddset (&sysset, syscall_num);
- pip->pid = pid;
- if (!open_proc_file (pid, pip, O_RDONLY))
- {
- perror_with_name (pip -> pathname);
- /* NOTREACHED */
- }
- make_cleanup (close_proc_file, pip);
- }
- else if (**argv != '\000')
- {
- error ("Unrecognized or ambiguous keyword `%s'.", *argv);
- }
- argv++;
+ if (ioctl (pi->ctl_fd, PIOCSENTRY, &sysset) < 0)
+ {
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCSENTRY failed");
}
}
- /* If we don't have a valid open process at this point, then we have no
- inferior or didn't specify a specific pid. */
-
- if (!pip)
- {
- error ("\
-No process. Start debugging a program or specify an explicit process ID.");
- }
- if (ioctl (pip -> fd, PIOCSTATUS, &(pip -> prstatus)) < 0)
+ if (flags & PROCFS_SYSCALL_EXIT)
{
- print_sys_errmsg (pip -> pathname, errno);
- error ("PIOCSTATUS failed");
- }
+ if (ioctl (pi->ctl_fd, PIOCGEXIT, &sysset) < 0)
+ {
+ procfs_clear_syscall_trap (pi, syscall_num, 1);
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCGEXIT failed");
+ }
- /* Print verbose information of the requested type(s), or just a summary
- of the information for all types. */
+ praddset (&sysset, syscall_num);
- printf_filtered ("\nInformation for %s:\n\n", pip -> pathname);
- if (summary || all || flags)
- {
- info_proc_flags (pip, summary);
- }
- if (summary || all)
- {
- info_proc_stop (pip, summary);
- }
- if (summary || all || signals || faults)
- {
- info_proc_siginfo (pip, summary);
- }
- if (summary || all || syscalls)
- {
- info_proc_syscalls (pip, summary);
- }
- if (summary || all || mappings)
- {
- info_proc_mappings (pip, summary);
+ if (ioctl (pi->ctl_fd, PIOCSEXIT, &sysset) < 0)
+ {
+ procfs_clear_syscall_trap (pi, syscall_num, 1);
+ print_sys_errmsg (pi->pathname, errno);
+ error ("PIOCSEXIT failed");
+ }
}
- if (summary || all || signals)
+
+ if (!pi->syscall_handlers)
{
- info_proc_signals (pip, summary);
+ pi->syscall_handlers = xmalloc (sizeof (struct procfs_syscall_handler));
+ pi->syscall_handlers[0].syscall_num = syscall_num;
+ pi->syscall_handlers[0].func = func;
+ pi->num_syscall_handlers = 1;
}
- if (summary || all || faults)
+ else
{
- info_proc_faults (pip, summary);
- }
- printf_filtered ("\n");
+ int i;
- /* All done, deal with closing any temporary process info structure,
- freeing temporary memory , etc. */
+ for (i = 0; i < pi->num_syscall_handlers; i++)
+ if (pi->syscall_handlers[i].syscall_num == syscall_num)
+ {
+ pi->syscall_handlers[i].func = func;
+ return;
+ }
- do_cleanups (old_chain);
+ pi->syscall_handlers = xrealloc (pi->syscall_handlers, (i + 1)
+ * sizeof (struct procfs_syscall_handler));
+ pi->syscall_handlers[i].syscall_num = syscall_num;
+ pi->syscall_handlers[i].func = func;
+ pi->num_syscall_handlers++;
+ }
}
+#ifdef SYS_lwp_create
+
/*
LOCAL FUNCTION
- procfs_set_sproc_trap -- arrange for child to stop on sproc().
+ procfs_lwp_creation_handler - handle exit from the _lwp_create syscall
SYNOPSIS
- void procfs_set_sproc_trap (struct procinfo *)
+ int procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp)
DESCRIPTION
- This function sets up a trap on sproc system call exits so that we can
- detect the arrival of a new thread. We are called with the new thread
- stopped prior to it's first instruction.
+ This routine is called both when an inferior process and it's new lwp
+ are about to finish a _lwp_create() system call. This is the system
+ call that Solaris uses to create a lightweight process. When the
+ target process gets this event, we can look at sysarg[2] to find the
+ new childs lwp ID, and create a procinfo struct from that. After that,
+ we pretend that we got a SIGTRAP, and return non-zero to tell
+ procfs_wait to wake up. Subsequently, wait_for_inferior gets woken up,
+ sees the new process and continues it.
- Also note that we turn on the inherit-on-fork flag in the child process
- so that any grand-children start with all tracing flags set.
- */
+ When we see the child exiting from lwp_create, we just contine it,
+ since everything was handled when the parent trapped.
-#ifdef SYS_sproc
+NOTES
+ In effect, we are only paying attention to the parent's completion of
+ the lwp_create syscall. If we only paid attention to the child
+ instead, then we wouldn't detect the creation of a suspended thread.
+ */
-static void
-procfs_set_sproc_trap (pi)
+static int
+procfs_lwp_creation_handler (pi, syscall_num, why, rtnvalp, statvalp)
struct procinfo *pi;
+ int syscall_num;
+ int why;
+ int *rtnvalp;
+ int *statvalp;
{
- sysset_t exitset;
-
- if (ioctl (pi->fd, PIOCGEXIT, &exitset) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- error ("PIOCGEXIT failed");
+ int lwp_id;
+ struct procinfo *childpi;
+
+ /* We've just detected the completion of an lwp_create system call. Now we
+ need to setup a procinfo struct for this thread, and notify the thread
+ system of the new arrival. */
+
+ /* If lwp_create failed, then nothing interesting happened. Continue the
+ process and go back to sleep. */
+
+ if (pi->prstatus.pr_reg[R_PSR] & PS_FLAG_CARRY)
+ { /* _lwp_create failed */
+ pi->prrun.pr_flags &= PRSTEP;
+ pi->prrun.pr_flags |= PRCFAULT;
+
+ if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
+ perror_with_name (pi->pathname);
+
+ return 0;
}
- praddset (&exitset, SYS_sproc);
+ /* At this point, the new thread is stopped at it's first instruction, and
+ the parent is stopped at the exit from lwp_create. */
- /* We trap on fork() and vfork() in order to disable debugging in our grand-
- children and descendant processes. At this time, GDB can only handle
- threads (multiple processes, one address space). forks (and execs) result
- in the creation of multiple address spaces, which GDB can't handle yet. */
+ if (pi->new_child) /* Child? */
+ { /* Yes, just continue it */
+ pi->prrun.pr_flags &= PRSTEP;
+ pi->prrun.pr_flags |= PRCFAULT;
- praddset (&exitset, SYS_fork);
-#ifdef SYS_vfork
- praddset (&exitset, SYS_vfork);
-#endif
+ if ((pi->prstatus.pr_flags & PR_ISTOP)
+ && ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
+ perror_with_name (pi->pathname);
- if (ioctl (pi->fd, PIOCSEXIT, &exitset) < 0)
- {
- print_sys_errmsg (pi->pathname, errno);
- error ("PIOCSEXIT failed");
+ pi->new_child = 0; /* No longer new */
+
+ return 0;
}
- /* Turn on inherit-on-fork flag so that all grand-children of gdb start with
- tracing flags set. */
+ /* We're the proud parent of a new thread. Setup an exit trap for lwp_create
+ in the child and continue the parent. */
-#ifdef PIOCSET /* New method */
- {
- long pr_flags;
- pr_flags = PR_FORK;
- ioctl (pi->fd, PIOCSET, &pr_flags);
- }
-#else
-#ifdef PIOCSFORK /* Original method */
- ioctl (pi->fd, PIOCSFORK, NULL);
-#endif
-#endif
+ /* Third arg is pointer to new thread id. */
+ lwp_id = read_memory_integer (pi->prstatus.pr_sysarg[2], sizeof (int));
+
+ lwp_id = (lwp_id << 16) | PIDGET (pi->pid);
+
+ childpi = create_procinfo (lwp_id);
+
+ /* The new process has actually inherited the lwp_create syscall trap from
+ it's parent, but we still have to call this to register handlers for
+ that child. */
+
+ procfs_set_inferior_syscall_traps (childpi);
+ add_thread (lwp_id);
+ printf_filtered ("[New %s]\n", target_pid_to_str (lwp_id));
+
+ /* Continue the parent */
+
+ pi->prrun.pr_flags &= PRSTEP;
+ pi->prrun.pr_flags |= PRCFAULT;
+ if (ioctl (pi->ctl_fd, PIOCRUN, &pi->prrun) != 0)
+ perror_with_name (pi->pathname);
+
+ /* The new child may have been created in one of two states:
+ SUSPENDED or RUNNABLE. If runnable, we will simply signal it to run.
+ If suspended, we flag it to be continued later, when it has an event. */
+
+ if (childpi->prstatus.pr_why == PR_SUSPENDED)
+ childpi->new_child = 1; /* Flag this as an unseen child process */
+ else
+ {
+ /* Continue the child */
+ childpi->prrun.pr_flags &= PRSTEP;
+ childpi->prrun.pr_flags |= PRCFAULT;
+
+ if (ioctl (childpi->ctl_fd, PIOCRUN, &childpi->prrun) != 0)
+ perror_with_name (childpi->pathname);
+ }
+ return 0;
}
-#endif /* SYS_sproc */
+#endif /* SYS_lwp_create */
/* Fork an inferior process, and start debugging it with /proc. */
/* We are at the first instruction we care about. */
/* Pedal to the metal... */
- /* Setup traps on exit from sproc() */
-
-#ifdef SYS_sproc
- procfs_set_sproc_trap (current_procinfo);
-#endif
-
proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
}
static int
procfs_can_run ()
{
- return(1);
+ /* This variable is controlled by modules that sit atop procfs that may layer
+ their own process structure atop that provided here. sol-thread.c does
+ this because of the Solaris two-level thread model. */
+
+ return !procfs_suppress_run;
}
-#ifdef TARGET_CAN_USE_HARDWARE_WATCHPOINT
+#ifdef TARGET_HAS_HARDWARE_WATCHPOINTS
\f
/* Insert a watchpoint */
int
wpt.pr_vaddr = (caddr_t)addr;
wpt.pr_size = len;
wpt.pr_wflags = ((rw & 1) ? MA_READ : 0) | ((rw & 2) ? MA_WRITE : 0);
- if (ioctl (pi->fd, PIOCSWATCH, &wpt) < 0)
+ if (ioctl (pi->ctl_fd, PIOCSWATCH, &wpt) < 0)
{
if (errno == E2BIG)
return -1;
what = pi->prstatus.pr_what;
if (why == PR_FAULTED
#if defined (FLTWATCH) && defined (FLTKWATCH)
- && (what == FLTWATCH) || (what == FLTKWATCH)
+ && (what == FLTWATCH || what == FLTKWATCH)
#else
#ifdef FLTWATCH
&& (what == FLTWATCH)
}
return 0;
}
-#endif
+#endif /* TARGET_HAS_HARDWARE_WATCHPOINTS */
+
+/* Why is this necessary? Shouldn't dead threads just be removed from the
+ thread database? */
+
+static int
+procfs_thread_alive (pid)
+ int pid;
+{
+ struct procinfo *pi, *next_pi;
+
+ for (pi = procinfo_list; pi; pi = next_pi)
+ {
+ next_pi = pi->next;
+ if (pi -> pid == pid)
+ if (procfs_read_status (pi)) /* alive */
+ return 1;
+ else /* defunct (exited) */
+ {
+ close_proc_file (pi);
+ return 0;
+ }
+ }
+ return 0;
+}
+
+int
+procfs_first_available ()
+{
+ struct procinfo *pi;
+
+ for (pi = procinfo_list; pi; pi = pi->next)
+ {
+ if (procfs_read_status (pi))
+ return pi->pid;
+ }
+ return -1;
+}
/* Send a SIGINT to the process group. This acts just like the user typed a
^C on the controlling terminal.
XXX - This may not be correct for all systems. Some may want to use
killpg() instead of kill (-pgrp). */
-void
+static void
procfs_stop ()
{
extern pid_t inferior_process_group;
kill (-inferior_process_group, SIGINT);
}
+\f
+/* Convert a pid to printable form. */
+
+#ifdef TIDGET
+char *
+procfs_pid_to_str (pid)
+ int pid;
+{
+ static char buf[100];
+ sprintf (buf, "Kernel thread %d", TIDGET (pid));
+
+ return buf;
+}
+#endif /* TIDGET */
\f
struct target_ops procfs_ops = {
"procfs", /* to_shortname */
procfs_mourn_inferior, /* to_mourn_inferior */
procfs_can_run, /* to_can_run */
procfs_notice_signals, /* to_notice_signals */
+ procfs_thread_alive, /* to_thread_alive */
procfs_stop, /* to_stop */
process_stratum, /* to_stratum */
0, /* to_next */
_initialize_procfs ()
{
#ifdef HAVE_OPTIONAL_PROC_FS
- char procname[32];
+ char procname[MAX_PROC_NAME_SIZE];
int fd;
/* If we have an optional /proc filesystem (e.g. under OSF/1),
don't add procfs support if we cannot access the running
GDB via /proc. */
- sprintf (procname, PROC_NAME_FMT, getpid ());
+ sprintf (procname, STATUS_PROC_NAME_FMT, getpid ());
if ((fd = open (procname, O_RDONLY)) < 0)
return;
close (fd);
add_target (&procfs_ops);
- add_info ("proc", info_proc,
+ add_info ("processes", info_proc,
"Show process status information using /proc entry.\n\
Specify process id or use current inferior by default.\n\
Specify keywords for detailed information; default is summary.\n\
projects / deliverable / binutils-gdb.git / blobdiff