/* Machine independent support for SVR4 /proc (process file system) for GDB.
- Copyright 1999 Free Software Foundation, Inc.
+
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2006, 2007, 2008
+ Free Software Foundation, Inc.
+
Written by Michael Snyder at Cygnus Solutions.
Based on work by Fred Fish, Stu Grossman, Geoff Noer, and others.
-This file is part of GDB.
+ This file is part of GDB.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software Foundation,
-Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
#include "target.h"
#include "gdbcore.h"
+#include "elf-bfd.h" /* for elfcore_write_* */
#include "gdbcmd.h"
#include "gdbthread.h"
+#include "regcache.h"
#if defined (NEW_PROC_API)
#define _STRUCTURED_PROC 1 /* Should be done by configure script. */
#endif
#include <sys/procfs.h>
+#ifdef HAVE_SYS_FAULT_H
#include <sys/fault.h>
+#endif
+#ifdef HAVE_SYS_SYSCALL_H
#include <sys/syscall.h>
+#endif
#include <sys/errno.h>
-#include <sys/wait.h>
+#include "gdb_wait.h"
#include <signal.h>
#include <ctype.h>
+#include "gdb_string.h"
+#include "gdb_assert.h"
+#include "inflow.h"
+#include "auxv.h"
-#include "proc-utils.h"
-
-/*
+/*
* PROCFS.C
*
* This module provides the interface between GDB and the
* Solaris
* OSF
* Unixware
+ * AIX5
*
- * /proc works by immitating a file system: you open a simulated file
+ * /proc works by imitating a file system: you open a simulated file
* that represents the process you wish to interact with, and
* perform operations on that "file" in order to examine or change
* the state of the other process.
* This module has to support both /proc interfaces. This means
* that there are two different ways of doing every basic operation.
*
- * In order to keep most of the code simple and clean, I have
+ * In order to keep most of the code simple and clean, I have
* defined an interface "layer" which hides all these system calls.
* An ifdef (NEW_PROC_API) determines which interface we are using,
* and most or all occurrances of this ifdef should be confined to
/* Determine which /proc API we are using:
- The ioctl API defines PIOCSTATUS, while
+ The ioctl API defines PIOCSTATUS, while
the read/write (multiple fd) API never does. */
#ifdef NEW_PROC_API
#include <sys/types.h>
-#include <dirent.h> /* opendir/readdir, for listing the LWP's */
+#include "gdb_dirent.h" /* opendir/readdir, for listing the LWP's */
#endif
#include <fcntl.h> /* for O_RDONLY */
#include <unistd.h> /* for "X_OK" */
#include "gdb_stat.h" /* for struct stat */
+/* Note: procfs-utils.h must be included after the above system header
+ files, because it redefines various system calls using macros.
+ This may be incompatible with the prototype declarations. */
+
+#include "proc-utils.h"
+
+/* Prototypes for supply_gregset etc. */
+#include "gregset.h"
+
/* =================== TARGET_OPS "MODULE" =================== */
/*
* This module defines the GDB target vector and its methods.
*/
-static void procfs_open PARAMS((char *, int));
-static void procfs_attach PARAMS ((char *, int));
-static void procfs_detach PARAMS ((char *, int));
-static void procfs_resume PARAMS ((int, int, enum target_signal));
-static int procfs_can_run PARAMS ((void));
-static void procfs_stop PARAMS ((void));
-static void procfs_files_info PARAMS ((struct target_ops *));
-static void procfs_fetch_registers PARAMS ((int));
-static void procfs_store_registers PARAMS ((int));
-static void procfs_notice_signals PARAMS ((int));
-static void procfs_prepare_to_store PARAMS ((void));
-static void procfs_kill_inferior PARAMS ((void));
-static void procfs_mourn_inferior PARAMS ((void));
-static void procfs_create_inferior PARAMS ((char *, char *, char **));
-static int procfs_wait PARAMS ((int,
- struct target_waitstatus *));
-static int procfs_xfer_memory PARAMS ((CORE_ADDR,
- char *, int, int,
- struct target_ops *));
-
-static int procfs_thread_alive PARAMS ((int));
-
-void procfs_find_new_threads PARAMS ((void));
-char *procfs_pid_to_str PARAMS ((int));
+static void procfs_open (char *, int);
+static void procfs_attach (char *, int);
+static void procfs_detach (char *, int);
+static void procfs_resume (ptid_t, int, enum target_signal);
+static int procfs_can_run (void);
+static void procfs_stop (void);
+static void procfs_files_info (struct target_ops *);
+static void procfs_fetch_registers (struct regcache *, int);
+static void procfs_store_registers (struct regcache *, int);
+static void procfs_notice_signals (ptid_t);
+static void procfs_prepare_to_store (struct regcache *);
+static void procfs_kill_inferior (void);
+static void procfs_mourn_inferior (void);
+static void procfs_create_inferior (char *, char *, char **, int);
+static ptid_t procfs_wait (ptid_t, struct target_waitstatus *);
+static int procfs_xfer_memory (CORE_ADDR, char *, int, int,
+ struct mem_attrib *attrib,
+ struct target_ops *);
+static LONGEST procfs_xfer_partial (struct target_ops *ops,
+ enum target_object object,
+ const char *annex,
+ void *readbuf, const void *writebuf,
+ ULONGEST offset, LONGEST len);
+
+static int procfs_thread_alive (ptid_t);
+
+void procfs_find_new_threads (void);
+char *procfs_pid_to_str (ptid_t);
+
+static int proc_find_memory_regions (int (*) (CORE_ADDR,
+ unsigned long,
+ int, int, int,
+ void *),
+ void *);
+
+static char * procfs_make_note_section (bfd *, int *);
+
+static int procfs_can_use_hw_breakpoint (int, int, int);
struct target_ops procfs_ops; /* the target vector */
static void
-init_procfs_ops ()
+init_procfs_ops (void)
{
- procfs_ops.to_shortname = "procfs";
- procfs_ops.to_longname = "Unix /proc child process";
- procfs_ops.to_doc =
+ procfs_ops.to_shortname = "procfs";
+ procfs_ops.to_longname = "Unix /proc child process";
+ procfs_ops.to_doc =
"Unix /proc child process (started by the \"run\" command).";
- procfs_ops.to_open = procfs_open;
- procfs_ops.to_can_run = procfs_can_run;
- procfs_ops.to_create_inferior = procfs_create_inferior;
- procfs_ops.to_kill = procfs_kill_inferior;
- procfs_ops.to_mourn_inferior = procfs_mourn_inferior;
- procfs_ops.to_attach = procfs_attach;
- procfs_ops.to_detach = procfs_detach;
- procfs_ops.to_wait = procfs_wait;
- procfs_ops.to_resume = procfs_resume;
- procfs_ops.to_prepare_to_store = procfs_prepare_to_store;
- procfs_ops.to_fetch_registers = procfs_fetch_registers;
- procfs_ops.to_store_registers = procfs_store_registers;
- procfs_ops.to_xfer_memory = procfs_xfer_memory;
- procfs_ops.to_insert_breakpoint = memory_insert_breakpoint;
- procfs_ops.to_remove_breakpoint = memory_remove_breakpoint;
- procfs_ops.to_notice_signals = procfs_notice_signals;
- procfs_ops.to_files_info = procfs_files_info;
- procfs_ops.to_stop = procfs_stop;
-
- procfs_ops.to_terminal_init = terminal_init_inferior;
- procfs_ops.to_terminal_inferior = terminal_inferior;
+ procfs_ops.to_open = procfs_open;
+ procfs_ops.to_can_run = procfs_can_run;
+ procfs_ops.to_create_inferior = procfs_create_inferior;
+ procfs_ops.to_kill = procfs_kill_inferior;
+ procfs_ops.to_mourn_inferior = procfs_mourn_inferior;
+ procfs_ops.to_attach = procfs_attach;
+ procfs_ops.to_detach = procfs_detach;
+ procfs_ops.to_wait = procfs_wait;
+ procfs_ops.to_resume = procfs_resume;
+ procfs_ops.to_prepare_to_store = procfs_prepare_to_store;
+ procfs_ops.to_fetch_registers = procfs_fetch_registers;
+ procfs_ops.to_store_registers = procfs_store_registers;
+ procfs_ops.to_xfer_partial = procfs_xfer_partial;
+ procfs_ops.deprecated_xfer_memory = procfs_xfer_memory;
+ procfs_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ procfs_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ procfs_ops.to_notice_signals = procfs_notice_signals;
+ procfs_ops.to_files_info = procfs_files_info;
+ procfs_ops.to_stop = procfs_stop;
+
+ procfs_ops.to_terminal_init = terminal_init_inferior;
+ procfs_ops.to_terminal_inferior = terminal_inferior;
procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output;
- procfs_ops.to_terminal_ours = terminal_ours;
- procfs_ops.to_terminal_info = child_terminal_info;
-
- procfs_ops.to_find_new_threads = procfs_find_new_threads;
- procfs_ops.to_thread_alive = procfs_thread_alive;
- procfs_ops.to_pid_to_str = procfs_pid_to_str;
-
- procfs_ops.to_has_execution = 1;
- procfs_ops.to_has_stack = 1;
- procfs_ops.to_has_registers = 1;
- procfs_ops.to_stratum = process_stratum;
- procfs_ops.to_has_thread_control = tc_schedlock;
- procfs_ops.to_magic = OPS_MAGIC;
+ procfs_ops.to_terminal_ours = terminal_ours;
+ procfs_ops.to_terminal_save_ours = terminal_save_ours;
+ procfs_ops.to_terminal_info = child_terminal_info;
+
+ procfs_ops.to_find_new_threads = procfs_find_new_threads;
+ procfs_ops.to_thread_alive = procfs_thread_alive;
+ procfs_ops.to_pid_to_str = procfs_pid_to_str;
+
+ procfs_ops.to_has_all_memory = 1;
+ procfs_ops.to_has_memory = 1;
+ procfs_ops.to_has_execution = 1;
+ procfs_ops.to_has_stack = 1;
+ procfs_ops.to_has_registers = 1;
+ procfs_ops.to_stratum = process_stratum;
+ procfs_ops.to_has_thread_control = tc_schedlock;
+ procfs_ops.to_find_memory_regions = proc_find_memory_regions;
+ procfs_ops.to_make_corefile_notes = procfs_make_note_section;
+ procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint;
+ procfs_ops.to_magic = OPS_MAGIC;
}
/* =================== END, TARGET_OPS "MODULE" =================== */
-/*
- * Temporary debugging code:
- *
- * These macros allow me to trace the system calls that we make
- * to control the child process. This is quite handy for comparing
- * with the older version of procfs.
- */
-
-#ifdef TRACE_PROCFS
-#ifdef NEW_PROC_API
-extern int write_with_trace PARAMS ((int, void *, size_t, char *, int));
-extern off_t lseek_with_trace PARAMS ((int, off_t, int, char *, int));
-#define write(X,Y,Z) write_with_trace (X, Y, Z, __FILE__, __LINE__)
-#define lseek(X,Y,Z) lseek_with_trace (X, Y, Z, __FILE__, __LINE__)
-#else
-extern int ioctl_with_trace PARAMS ((int, long, void *, char *, int));
-#define ioctl(X,Y,Z) ioctl_with_trace (X, Y, Z, __FILE__, __LINE__)
-#endif
-#define open(X,Y) open_with_trace (X, Y, __FILE__, __LINE__)
-#define close(X) close_with_trace (X, __FILE__, __LINE__)
-#define wait(X) wait_with_trace (X, __FILE__, __LINE__)
-#define PROCFS_NOTE(X) procfs_note (X, __FILE__, __LINE__)
-#define PROC_PRETTYFPRINT_STATUS(X,Y,Z,T) \
-proc_prettyfprint_status (X, Y, Z, T)
-#else
-#define PROCFS_NOTE(X)
-#define PROC_PRETTYFPRINT_STATUS(X,Y,Z,T)
-#endif
-
-
/*
* World Unification:
*
*/
#ifdef NEW_PROC_API /* Solaris 7 && 8 method for watchpoints */
-#ifndef UNIXWARE
- enum { READ_WATCHFLAG = WA_READ,
+#ifdef WA_READ
+ enum { READ_WATCHFLAG = WA_READ,
WRITE_WATCHFLAG = WA_WRITE,
EXEC_WATCHFLAG = WA_EXEC,
AFTER_WATCHFLAG = WA_TRAPAFTER
};
#endif
#else /* Irix method for watchpoints */
- enum { READ_WATCHFLAG = MA_READ,
+ enum { READ_WATCHFLAG = MA_READ,
WRITE_WATCHFLAG = MA_WRITE,
EXEC_WATCHFLAG = MA_EXEC,
AFTER_WATCHFLAG = 0 /* trapafter not implemented */
};
#endif
+/* gdb_sigset_t */
+#ifdef HAVE_PR_SIGSET_T
+typedef pr_sigset_t gdb_sigset_t;
+#else
+typedef sigset_t gdb_sigset_t;
+#endif
+
+/* sigaction */
+#ifdef HAVE_PR_SIGACTION64_T
+typedef pr_sigaction64_t gdb_sigaction_t;
+#else
+typedef struct sigaction gdb_sigaction_t;
+#endif
+
+/* siginfo */
+#ifdef HAVE_PR_SIGINFO64_T
+typedef pr_siginfo64_t gdb_siginfo_t;
+#else
+typedef struct siginfo gdb_siginfo_t;
+#endif
+
+/* gdb_premptysysset */
+#ifdef premptysysset
+#define gdb_premptysysset premptysysset
+#else
+#define gdb_premptysysset premptyset
+#endif
+
+/* praddsysset */
+#ifdef praddsysset
+#define gdb_praddsysset praddsysset
+#else
+#define gdb_praddsysset praddset
+#endif
+
+/* prdelsysset */
+#ifdef prdelsysset
+#define gdb_prdelsysset prdelsysset
+#else
+#define gdb_prdelsysset prdelset
+#endif
+
+/* prissyssetmember */
+#ifdef prissyssetmember
+#define gdb_pr_issyssetmember prissyssetmember
+#else
+#define gdb_pr_issyssetmember prismember
+#endif
+
+/* As a feature test, saying ``#if HAVE_PRSYSENT_T'' everywhere isn't
+ as intuitively descriptive as it could be, so we'll define
+ DYNAMIC_SYSCALLS to mean the same thing. Anyway, at the time of
+ this writing, this feature is only found on AIX5 systems and
+ basically means that the set of syscalls is not fixed. I.e,
+ there's no nice table that one can #include to get all of the
+ syscall numbers. Instead, they're stored in /proc/PID/sysent
+ for each process. We are at least guaranteed that they won't
+ change over the lifetime of the process. But each process could
+ (in theory) have different syscall numbers.
+*/
+#ifdef HAVE_PRSYSENT_T
+#define DYNAMIC_SYSCALLS
+#endif
typedef prstatus_t gdb_lwpstatus_t;
#endif /* NEW_PROC_API */
-
-/* These #ifdefs are for sol2.x in particular. sol2.x has
- both a "gregset_t" and a "prgregset_t", which have
- similar uses but different layouts. sol2.x gdb tries to
- use prgregset_t (and prfpregset_t) everywhere. */
-
-#ifdef GDB_GREGSET_TYPE
- typedef GDB_GREGSET_TYPE gdb_gregset_t;
-#else
- typedef gregset_t gdb_gregset_t;
-#endif
-
-#ifdef GDB_FPREGSET_TYPE
- typedef GDB_FPREGSET_TYPE gdb_fpregset_t;
-#else
- typedef fpregset_t gdb_fpregset_t;
-#endif
-
-/* Provide default composite pid manipulation macros for systems that
- don't have threads. */
-
-#ifndef PIDGET
-#define PIDGET(PID) (PID)
-#define TIDGET(PID) (PID)
-#define MERGEPID(PID, TID) (PID)
-#endif
-
typedef struct procinfo {
struct procinfo *next;
int pid; /* Process ID */
int was_stopped;
int ignore_next_sigstop;
- /* The following four fd fields may be identical, or may contain
+ /* The following four fd fields may be identical, or may contain
several different fd's, depending on the version of /proc
(old ioctl or new read/write). */
/*
* The next three file descriptors are actually only needed in the
* read/write, multiple-file-descriptor implemenation (NEW_PROC_API).
- * However, to avoid a bunch of #ifdefs in the code, we will use
+ * However, to avoid a bunch of #ifdefs in the code, we will use
* them uniformly by (in the case of the ioctl single-file-descriptor
* implementation) filling them with copies of the control fd.
*/
char pathname[MAX_PROC_NAME_SIZE]; /* Pathname to /proc entry */
fltset_t saved_fltset; /* Saved traced hardware fault set */
- sigset_t saved_sigset; /* 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 */
+ gdb_sigset_t saved_sigset; /* Saved traced signal set */
+ gdb_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 */
gdb_prstatus_t prstatus; /* Current process status info */
#ifndef NEW_PROC_API
gdb_fpregset_t fpregset; /* Current floating point registers */
#endif
-
+
+#ifdef DYNAMIC_SYSCALLS
+ int num_syscalls; /* Total number of syscalls */
+ char **syscall_names; /* Syscall number to name map */
+#endif
+
struct procinfo *thread_list;
int status_valid : 1;
/* Function prototypes for procinfo module: */
-static procinfo *find_procinfo_or_die PARAMS ((int pid, int tid));
-static procinfo *find_procinfo PARAMS ((int pid, int tid));
-static procinfo *create_procinfo PARAMS ((int pid, int tid));
-static void destroy_procinfo PARAMS ((procinfo *p));
-static void dead_procinfo PARAMS ((procinfo *p,
- char *msg, int killp));
-static int open_procinfo_files PARAMS ((procinfo *p, int which));
-static void close_procinfo_files PARAMS ((procinfo *p));
+static procinfo *find_procinfo_or_die (int pid, int tid);
+static procinfo *find_procinfo (int pid, int tid);
+static procinfo *create_procinfo (int pid, int tid);
+static void destroy_procinfo (procinfo * p);
+static void do_destroy_procinfo_cleanup (void *);
+static void dead_procinfo (procinfo * p, char *msg, int killp);
+static int open_procinfo_files (procinfo * p, int which);
+static void close_procinfo_files (procinfo * p);
+static int sysset_t_size (procinfo *p);
+static sysset_t *sysset_t_alloc (procinfo * pi);
+#ifdef DYNAMIC_SYSCALLS
+static void load_syscalls (procinfo *pi);
+static void free_syscalls (procinfo *pi);
+static int find_syscall (procinfo *pi, char *name);
+#endif /* DYNAMIC_SYSCALLS */
/* The head of the procinfo list: */
static procinfo * procinfo_list;
* Returns: pointer to procinfo, or NULL if not found.
*/
-static procinfo *
-find_procinfo (pid, tid)
- int pid;
- int tid;
+static procinfo *
+find_procinfo (int pid, int tid)
{
procinfo *pi;
*/
static procinfo *
-find_procinfo_or_die (pid, tid)
- int pid;
- int tid;
+find_procinfo_or_die (int pid, int tid)
{
procinfo *pi = find_procinfo (pid, tid);
if (pi == NULL)
{
if (tid)
- error ("procfs: couldn't find pid %d (kernel thread %d) in procinfo list.",
+ error (_("procfs: couldn't find pid %d (kernel thread %d) in procinfo list."),
pid, tid);
else
- error ("procfs: couldn't find pid %d in procinfo list.", pid);
+ error (_("procfs: couldn't find pid %d in procinfo list."), pid);
}
return pi;
}
+/* open_with_retry() is a wrapper for open(). The appropriate
+ open() call is attempted; if unsuccessful, it will be retried as
+ many times as needed for the EAGAIN and EINTR conditions.
+
+ For other conditions, open_with_retry() will retry the open() a
+ limited number of times. In addition, a short sleep is imposed
+ prior to retrying the open(). The reason for this sleep is to give
+ the kernel a chance to catch up and create the file in question in
+ the event that GDB "wins" the race to open a file before the kernel
+ has created it. */
+
+static int
+open_with_retry (const char *pathname, int flags)
+{
+ int retries_remaining, status;
+
+ retries_remaining = 2;
+
+ while (1)
+ {
+ status = open (pathname, flags);
+
+ if (status >= 0 || retries_remaining == 0)
+ break;
+ else if (errno != EINTR && errno != EAGAIN)
+ {
+ retries_remaining--;
+ sleep (1);
+ }
+ }
+
+ return status;
+}
+
/*
* Function: open_procinfo_files
*
enum { FD_CTL, FD_STATUS, FD_AS };
static int
-open_procinfo_files (pi, which)
- procinfo *pi;
- int which;
+open_procinfo_files (procinfo *pi, int which)
{
#ifdef NEW_PROC_API
char tmp[MAX_PROC_NAME_SIZE];
#endif
int fd;
- /*
+ /*
* This function is getting ALMOST long enough to break up into several.
* Here is some rationale:
*
* NEW_PROC_API (Solaris 2.6, Solaris 2.7, Unixware):
- * There are several file descriptors that may need to be open
+ * There are several file descriptors that may need to be open
* for any given process or LWP. The ones we're intereted in are:
* - control (ctl) write-only change the state
* - status (status) read-only query the state
* - address space (as) read/write access memory
* - map (map) read-only virtual addr map
* Most of these are opened lazily as they are needed.
- * The pathnames for the 'files' for an LWP look slightly
+ * The pathnames for the 'files' for an LWP look slightly
* different from those of a first-class process:
* Pathnames for a process (<proc-id>):
* /proc/<proc-id>/ctl
* For convenience, we copy the same file descriptor into all
* three fields of the procinfo struct (ctl_fd, status_fd, and
* as_fd, see NEW_PROC_API above) so that code that uses them
- * doesn't need any #ifdef's.
+ * doesn't need any #ifdef's.
* Pathname for all:
* /proc/<proc-id>
*
* Solaris 2.5 LWP's:
- * Each LWP has an independent file descriptor, but these
+ * Each LWP has an independent file descriptor, but these
* are not obtained via the 'open' system call like the rest:
* instead, they're obtained thru an ioctl call (PIOCOPENLWP)
* to the file descriptor of the parent process.
strcat (tmp, "/lwpctl");
else
strcat (tmp, "/ctl");
- fd = open (tmp, O_WRONLY);
+ fd = open_with_retry (tmp, O_WRONLY);
if (fd <= 0)
return 0; /* fail */
pi->ctl_fd = fd;
if (pi->tid)
return 0; /* there is no 'as' file descriptor for an lwp */
strcat (tmp, "/as");
- fd = open (tmp, O_RDWR);
+ fd = open_with_retry (tmp, O_RDWR);
if (fd <= 0)
return 0; /* fail */
pi->as_fd = fd;
strcat (tmp, "/lwpstatus");
else
strcat (tmp, "/status");
- fd = open (tmp, O_RDONLY);
+ fd = open_with_retry (tmp, O_RDONLY);
if (fd <= 0)
return 0; /* fail */
pi->status_fd = fd;
* In this case, there is only one file descriptor for each procinfo
* (ie. each process or LWP). In fact, only the file descriptor for
* the process can actually be opened by an 'open' system call.
- * The ones for the LWPs have to be obtained thru an IOCTL call
- * on the process's file descriptor.
+ * The ones for the LWPs have to be obtained thru an IOCTL call
+ * on the process's file descriptor.
*
* For convenience, we copy each procinfo's single file descriptor
- * into all of the fields occupied by the several file descriptors
+ * into all of the fields occupied by the several file descriptors
* of the NEW_PROC_API implementation. That way, the code that uses
* them can be written without ifdefs.
*/
#ifdef PIOCTSTATUS /* OSF */
- if ((fd = open (pi->pathname, O_RDWR)) == 0) /* Only one FD; just open it. */
+ /* Only one FD; just open it. */
+ if ((fd = open_with_retry (pi->pathname, O_RDWR)) == 0)
return 0;
#else /* Sol 2.5, Irix, other? */
if (pi->tid == 0) /* Master procinfo for the process */
{
- fd = open (pi->pathname, O_RDWR);
+ fd = open_with_retry (pi->pathname, O_RDWR);
if (fd <= 0)
return 0; /* fail */
}
* Function: create_procinfo
*
* Allocate a data structure and link it into the procinfo list.
- * (First tries to find a pre-existing one (FIXME: why???)
+ * (First tries to find a pre-existing one (FIXME: why?)
*
* Return: pointer to new procinfo struct.
*/
static procinfo *
-create_procinfo (pid, tid)
- int pid;
- int tid;
+create_procinfo (int pid, int tid)
{
procinfo *pi, *parent;
pi->pid = pid;
pi->tid = tid;
+#ifdef DYNAMIC_SYSCALLS
+ load_syscalls (pi);
+#endif
+
+ pi->saved_entryset = sysset_t_alloc (pi);
+ pi->saved_exitset = sysset_t_alloc (pi);
+
/* Chain into list. */
if (tid == 0)
{
*/
static void
-close_procinfo_files (pi)
- procinfo *pi;
+close_procinfo_files (procinfo *pi)
{
if (pi->ctl_fd > 0)
close (pi->ctl_fd);
*/
static void
-destroy_one_procinfo (list, pi)
- procinfo **list;
- procinfo *pi;
+destroy_one_procinfo (procinfo **list, procinfo *pi)
{
procinfo *ptr;
/* Step one: unlink the procinfo from its list */
if (pi == *list)
*list = pi->next;
- else
+ else
for (ptr = *list; ptr; ptr = ptr->next)
if (ptr->next == pi)
{
close_procinfo_files (pi);
/* Step three: free the memory. */
- free (pi);
+#ifdef DYNAMIC_SYSCALLS
+ free_syscalls (pi);
+#endif
+ xfree (pi->saved_entryset);
+ xfree (pi->saved_exitset);
+ xfree (pi);
}
static void
-destroy_procinfo (pi)
- procinfo *pi;
+destroy_procinfo (procinfo *pi)
{
procinfo *tmp;
}
}
+static void
+do_destroy_procinfo_cleanup (void *pi)
+{
+ destroy_procinfo (pi);
+}
+
enum { NOKILL, KILL };
/*
*/
static void
-dead_procinfo (pi, msg, kill_p)
- procinfo *pi;
- char *msg;
- int kill_p;
+dead_procinfo (procinfo *pi, char *msg, int kill_p)
{
char procfile[80];
kill (pi->pid, SIGKILL);
destroy_procinfo (pi);
- error (msg);
+ error ((msg));
+}
+
+/*
+ * Function: sysset_t_size
+ *
+ * Returns the (complete) size of a sysset_t struct. Normally, this
+ * is just sizeof (syset_t), but in the case of Monterey/64, the actual
+ * size of sysset_t isn't known until runtime.
+ */
+
+static int
+sysset_t_size (procinfo * pi)
+{
+#ifndef DYNAMIC_SYSCALLS
+ return sizeof (sysset_t);
+#else
+ return sizeof (sysset_t) - sizeof (uint64_t)
+ + sizeof (uint64_t) * ((pi->num_syscalls + (8 * sizeof (uint64_t) - 1))
+ / (8 * sizeof (uint64_t)));
+#endif
+}
+
+/* Function: sysset_t_alloc
+
+ Allocate and (partially) initialize a sysset_t struct. */
+
+static sysset_t *
+sysset_t_alloc (procinfo * pi)
+{
+ sysset_t *ret;
+ int size = sysset_t_size (pi);
+ ret = xmalloc (size);
+#ifdef DYNAMIC_SYSCALLS
+ ret->pr_size = (pi->num_syscalls + (8 * sizeof (uint64_t) - 1))
+ / (8 * sizeof (uint64_t));
+#endif
+ return ret;
+}
+
+#ifdef DYNAMIC_SYSCALLS
+
+/* Function: load_syscalls
+
+ Extract syscall numbers and names from /proc/<pid>/sysent. Initialize
+ pi->num_syscalls with the number of syscalls and pi->syscall_names
+ with the names. (Certain numbers may be skipped in which case the
+ names for these numbers will be left as NULL.) */
+
+#define MAX_SYSCALL_NAME_LENGTH 256
+#define MAX_SYSCALLS 65536
+
+static void
+load_syscalls (procinfo *pi)
+{
+ char pathname[MAX_PROC_NAME_SIZE];
+ int sysent_fd;
+ prsysent_t header;
+ prsyscall_t *syscalls;
+ int i, size, maxcall;
+
+ pi->num_syscalls = 0;
+ pi->syscall_names = 0;
+
+ /* Open the file descriptor for the sysent file */
+ sprintf (pathname, "/proc/%d/sysent", pi->pid);
+ sysent_fd = open_with_retry (pathname, O_RDONLY);
+ if (sysent_fd < 0)
+ {
+ error (_("load_syscalls: Can't open /proc/%d/sysent"), pi->pid);
+ }
+
+ size = sizeof header - sizeof (prsyscall_t);
+ if (read (sysent_fd, &header, size) != size)
+ {
+ error (_("load_syscalls: Error reading /proc/%d/sysent"), pi->pid);
+ }
+
+ if (header.pr_nsyscalls == 0)
+ {
+ error (_("load_syscalls: /proc/%d/sysent contains no syscalls!"), pi->pid);
+ }
+
+ size = header.pr_nsyscalls * sizeof (prsyscall_t);
+ syscalls = xmalloc (size);
+
+ if (read (sysent_fd, syscalls, size) != size)
+ {
+ xfree (syscalls);
+ error (_("load_syscalls: Error reading /proc/%d/sysent"), pi->pid);
+ }
+
+ /* Find maximum syscall number. This may not be the same as
+ pr_nsyscalls since that value refers to the number of entries
+ in the table. (Also, the docs indicate that some system
+ call numbers may be skipped.) */
+
+ maxcall = syscalls[0].pr_number;
+
+ for (i = 1; i < header.pr_nsyscalls; i++)
+ if (syscalls[i].pr_number > maxcall
+ && syscalls[i].pr_nameoff > 0
+ && syscalls[i].pr_number < MAX_SYSCALLS)
+ maxcall = syscalls[i].pr_number;
+
+ pi->num_syscalls = maxcall+1;
+ pi->syscall_names = xmalloc (pi->num_syscalls * sizeof (char *));
+
+ for (i = 0; i < pi->num_syscalls; i++)
+ pi->syscall_names[i] = NULL;
+
+ /* Read the syscall names in */
+ for (i = 0; i < header.pr_nsyscalls; i++)
+ {
+ char namebuf[MAX_SYSCALL_NAME_LENGTH];
+ int nread;
+ int callnum;
+
+ if (syscalls[i].pr_number >= MAX_SYSCALLS
+ || syscalls[i].pr_number < 0
+ || syscalls[i].pr_nameoff <= 0
+ || (lseek (sysent_fd, (off_t) syscalls[i].pr_nameoff, SEEK_SET)
+ != (off_t) syscalls[i].pr_nameoff))
+ continue;
+
+ nread = read (sysent_fd, namebuf, sizeof namebuf);
+ if (nread <= 0)
+ continue;
+
+ callnum = syscalls[i].pr_number;
+
+ if (pi->syscall_names[callnum] != NULL)
+ {
+ /* FIXME: Generate warning */
+ continue;
+ }
+
+ namebuf[nread-1] = '\0';
+ size = strlen (namebuf) + 1;
+ pi->syscall_names[callnum] = xmalloc (size);
+ strncpy (pi->syscall_names[callnum], namebuf, size-1);
+ pi->syscall_names[callnum][size-1] = '\0';
+ }
+
+ close (sysent_fd);
+ xfree (syscalls);
+}
+
+/* Function: free_syscalls
+
+ Free the space allocated for the syscall names from the procinfo
+ structure. */
+
+static void
+free_syscalls (procinfo *pi)
+{
+ if (pi->syscall_names)
+ {
+ int i;
+
+ for (i = 0; i < pi->num_syscalls; i++)
+ if (pi->syscall_names[i] != NULL)
+ xfree (pi->syscall_names[i]);
+
+ xfree (pi->syscall_names);
+ pi->syscall_names = 0;
+ }
+}
+
+/* Function: find_syscall
+
+ Given a name, look up (and return) the corresponding syscall number.
+ If no match is found, return -1. */
+
+static int
+find_syscall (procinfo *pi, char *name)
+{
+ int i;
+ for (i = 0; i < pi->num_syscalls; i++)
+ {
+ if (pi->syscall_names[i] && strcmp (name, pi->syscall_names[i]) == 0)
+ return i;
+ }
+ return -1;
}
+#endif
/* =================== END, STRUCT PROCINFO "MODULE" =================== */
/*
* This "module" is the interface layer between the /proc system API
- * and the gdb target vector functions. This layer consists of
+ * and the gdb target vector functions. This layer consists of
* access functions that encapsulate each of the basic operations
* that we need to use from the /proc API.
*
* functions, we do our best to hide them all in here.
*/
-int proc_get_status PARAMS ((procinfo *pi));
-long proc_flags PARAMS ((procinfo *pi));
-int proc_why PARAMS ((procinfo *pi));
-int proc_what PARAMS ((procinfo *pi));
-int proc_set_run_on_last_close PARAMS ((procinfo *pi));
-int proc_unset_run_on_last_close PARAMS ((procinfo *pi));
-int proc_set_inherit_on_fork PARAMS ((procinfo *pi));
-int proc_unset_inherit_on_fork PARAMS ((procinfo *pi));
-int proc_set_async PARAMS ((procinfo *pi));
-int proc_unset_async PARAMS ((procinfo *pi));
-int proc_stop_process PARAMS ((procinfo *pi));
-int proc_trace_signal PARAMS ((procinfo *pi, int signo));
-int proc_ignore_signal PARAMS ((procinfo *pi, int signo));
-int proc_clear_current_fault PARAMS ((procinfo *pi));
-int proc_set_current_signal PARAMS ((procinfo *pi, int signo));
-int proc_clear_current_signal PARAMS ((procinfo *pi));
-int proc_set_gregs PARAMS ((procinfo *pi));
-int proc_set_fpregs PARAMS ((procinfo *pi));
-int proc_wait_for_stop PARAMS ((procinfo *pi));
-int proc_run_process PARAMS ((procinfo *pi, int step, int signo));
-int proc_kill PARAMS ((procinfo *pi, int signo));
-int proc_parent_pid PARAMS ((procinfo *pi));
-int proc_get_nthreads PARAMS ((procinfo *pi));
-int proc_get_current_thread PARAMS ((procinfo *pi));
-int proc_set_held_signals PARAMS ((procinfo *pi, sigset_t *sighold));
-int proc_set_traced_sysexit PARAMS ((procinfo *pi, sysset_t *sysset));
-int proc_set_traced_sysentry PARAMS ((procinfo *pi, sysset_t *sysset));
-int proc_set_traced_faults PARAMS ((procinfo *pi, fltset_t *fltset));
-int proc_set_traced_signals PARAMS ((procinfo *pi, sigset_t *sigset));
-
-int proc_update_threads PARAMS ((procinfo *pi));
-int proc_iterate_over_threads PARAMS ((procinfo *pi,
- int (*func) PARAMS ((procinfo *,
- procinfo *,
- void *)),
- void *ptr));
-
-gdb_gregset_t *proc_get_gregs PARAMS ((procinfo *pi));
-gdb_fpregset_t *proc_get_fpregs PARAMS ((procinfo *pi));
-sysset_t *proc_get_traced_sysexit PARAMS ((procinfo *pi, sysset_t *save));
-sysset_t *proc_get_traced_sysentry PARAMS ((procinfo *pi, sysset_t *save));
-fltset_t *proc_get_traced_faults PARAMS ((procinfo *pi, fltset_t *save));
-sigset_t *proc_get_traced_signals PARAMS ((procinfo *pi, sigset_t *save));
-sigset_t *proc_get_held_signals PARAMS ((procinfo *pi, sigset_t *save));
-sigset_t *proc_get_pending_signals PARAMS ((procinfo *pi, sigset_t *save));
-struct sigaction *proc_get_signal_actions PARAMS ((procinfo *pi,
- struct sigaction *save));
-
-void proc_warn PARAMS ((procinfo *pi, char *func, int line));
-void proc_error PARAMS ((procinfo *pi, char *func, int line));
+int proc_get_status (procinfo * pi);
+long proc_flags (procinfo * pi);
+int proc_why (procinfo * pi);
+int proc_what (procinfo * pi);
+int proc_set_run_on_last_close (procinfo * pi);
+int proc_unset_run_on_last_close (procinfo * pi);
+int proc_set_inherit_on_fork (procinfo * pi);
+int proc_unset_inherit_on_fork (procinfo * pi);
+int proc_set_async (procinfo * pi);
+int proc_unset_async (procinfo * pi);
+int proc_stop_process (procinfo * pi);
+int proc_trace_signal (procinfo * pi, int signo);
+int proc_ignore_signal (procinfo * pi, int signo);
+int proc_clear_current_fault (procinfo * pi);
+int proc_set_current_signal (procinfo * pi, int signo);
+int proc_clear_current_signal (procinfo * pi);
+int proc_set_gregs (procinfo * pi);
+int proc_set_fpregs (procinfo * pi);
+int proc_wait_for_stop (procinfo * pi);
+int proc_run_process (procinfo * pi, int step, int signo);
+int proc_kill (procinfo * pi, int signo);
+int proc_parent_pid (procinfo * pi);
+int proc_get_nthreads (procinfo * pi);
+int proc_get_current_thread (procinfo * pi);
+int proc_set_held_signals (procinfo * pi, gdb_sigset_t * sighold);
+int proc_set_traced_sysexit (procinfo * pi, sysset_t * sysset);
+int proc_set_traced_sysentry (procinfo * pi, sysset_t * sysset);
+int proc_set_traced_faults (procinfo * pi, fltset_t * fltset);
+int proc_set_traced_signals (procinfo * pi, gdb_sigset_t * sigset);
+
+int proc_update_threads (procinfo * pi);
+int proc_iterate_over_threads (procinfo * pi,
+ int (*func) (procinfo *, procinfo *, void *),
+ void *ptr);
+
+gdb_gregset_t *proc_get_gregs (procinfo * pi);
+gdb_fpregset_t *proc_get_fpregs (procinfo * pi);
+sysset_t *proc_get_traced_sysexit (procinfo * pi, sysset_t * save);
+sysset_t *proc_get_traced_sysentry (procinfo * pi, sysset_t * save);
+fltset_t *proc_get_traced_faults (procinfo * pi, fltset_t * save);
+gdb_sigset_t *proc_get_traced_signals (procinfo * pi, gdb_sigset_t * save);
+gdb_sigset_t *proc_get_held_signals (procinfo * pi, gdb_sigset_t * save);
+gdb_sigset_t *proc_get_pending_signals (procinfo * pi, gdb_sigset_t * save);
+gdb_sigaction_t *proc_get_signal_actions (procinfo * pi, gdb_sigaction_t *save);
+
+void proc_warn (procinfo * pi, char *func, int line);
+void proc_error (procinfo * pi, char *func, int line);
void
-proc_warn (pi, func, line)
- procinfo *pi;
- char *func;
- int line;
+proc_warn (procinfo *pi, char *func, int line)
{
sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname);
print_sys_errmsg (errmsg, errno);
}
void
-proc_error (pi, func, line)
- procinfo *pi;
- char *func;
- int line;
+proc_error (procinfo *pi, char *func, int line)
{
sprintf (errmsg, "procfs: %s line %d, %s", func, line, pi->pathname);
perror_with_name (errmsg);
*/
int
-proc_get_status (pi)
- procinfo *pi;
+proc_get_status (procinfo *pi)
{
/* Status file descriptor is opened "lazily" */
if (pi->status_fd == 0 &&
pi->status_valid = 0; /* fail */
else
{
- /* Sigh... I have to read a different data structure,
+ /* Sigh... I have to read a different data structure,
depending on whether this is a main process or an LWP. */
if (pi->tid)
- pi->status_valid = (read (pi->status_fd,
- (char *) &pi->prstatus.pr_lwp,
+ pi->status_valid = (read (pi->status_fd,
+ (char *) &pi->prstatus.pr_lwp,
sizeof (lwpstatus_t))
== sizeof (lwpstatus_t));
else
{
- pi->status_valid = (read (pi->status_fd,
+ pi->status_valid = (read (pi->status_fd,
(char *) &pi->prstatus,
sizeof (gdb_prstatus_t))
== sizeof (gdb_prstatus_t));
(pi->prstatus.pr_lwp.pr_flags & PR_ISTOP) &&
pi->prstatus.pr_lwp.pr_why == PR_REQUESTED)
/* Unixware peculiarity -- read the damn thing again! */
- pi->status_valid = (read (pi->status_fd,
+ pi->status_valid = (read (pi->status_fd,
(char *) &pi->prstatus,
sizeof (gdb_prstatus_t))
== sizeof (gdb_prstatus_t));
if (pi->tid == 0) /* main process */
{
/* Just read the danged status. Now isn't that simple? */
- pi->status_valid =
+ pi->status_valid =
(ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0);
}
else
win = (ioctl (pi->status_fd, PIOCTSTATUS, &thread_status) >= 0);
if (win)
{
- memcpy (&pi->prstatus, &thread_status.status,
+ memcpy (&pi->prstatus, &thread_status.status,
sizeof (pi->prstatus));
pi->status_valid = 1;
}
if (pi->status_valid)
{
- PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
+ PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
proc_why (pi),
- proc_what (pi),
+ proc_what (pi),
proc_get_current_thread (pi));
}
/* The status struct includes general regs, so mark them valid too */
pi->gregs_valid = pi->status_valid;
#ifdef NEW_PROC_API
- /* In the read/write multiple-fd model,
+ /* In the read/write multiple-fd model,
the status struct includes the fp regs too, so mark them valid too */
pi->fpregs_valid = pi->status_valid;
#endif
* Function: proc_flags
*
* returns the process flags (pr_flags field).
- */
+ */
long
-proc_flags (pi)
- procinfo *pi;
+proc_flags (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
*/
int
-proc_why (pi)
- procinfo *pi;
+proc_why (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
*/
int
-proc_what (pi)
- procinfo *pi;
+proc_what (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
*/
int
-proc_nsysarg (pi)
- procinfo *pi;
+proc_nsysarg (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
return 0;
-
+
#ifdef NEW_PROC_API
return pi->prstatus.pr_lwp.pr_nsysarg;
#else
*/
long *
-proc_sysargs (pi)
- procinfo *pi;
+proc_sysargs (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
return NULL;
-
+
#ifdef NEW_PROC_API
return (long *) &pi->prstatus.pr_lwp.pr_sysarg;
#else
*/
int
-proc_syscall (pi)
- procinfo *pi;
+proc_syscall (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
return 0;
-
+
#ifdef NEW_PROC_API
return pi->prstatus.pr_lwp.pr_syscall;
#else
}
/*
- * Function: proc_modify_flag
+ * Function: proc_modify_flag
*
- * === I appologize for the messiness of this function.
+ * === I appologize for the messiness of this function.
* === This is an area where the different versions of
* === /proc are more inconsistent than usual. MVS
*
* Note: OSF does not define PR_KLC.
* Note: OSF is the only one that can ONLY use the oldest method.
*
- * Arguments:
+ * Arguments:
* pi -- the procinfo
* flag -- one of PR_FORK, PR_RLC, or PR_ASYNC
* mode -- 1 for set, 0 for reset.
enum { FLAG_RESET, FLAG_SET };
static int
-proc_modify_flag (pi, flag, mode)
- procinfo *pi;
- long flag;
- long mode;
+proc_modify_flag (procinfo *pi, long flag, long mode)
{
long win = 0; /* default to fail */
- /*
- * These operations affect the process as a whole, and applying
- * them to an individual LWP has the same meaning as applying them
- * to the main process. Therefore, if we're ever called with a
- * pointer to an LWP's procinfo, let's substitute the process's
- * procinfo and avoid opening the LWP's file descriptor
- * unnecessarily.
+ /*
+ * These operations affect the process as a whole, and applying
+ * them to an individual LWP has the same meaning as applying them
+ * to the main process. Therefore, if we're ever called with a
+ * pointer to an LWP's procinfo, let's substitute the process's
+ * procinfo and avoid opening the LWP's file descriptor
+ * unnecessarily.
*/
if (pi->pid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API /* Newest method: UnixWare and newer Solarii */
- /* First normalize the PCUNSET/PCRESET command opcode
+ /* First normalize the PCUNSET/PCRESET command opcode
(which for no obvious reason has a different definition
from one operating system to the next...) */
#ifdef PCUNSET
#define GDBRESET PCUNSET
-#endif
+#else
#ifdef PCRESET
#define GDBRESET PCRESET
+#endif
#endif
{
- long arg[2];
+ procfs_ctl_t arg[2];
if (mode == FLAG_SET) /* Set the flag (RLC, FORK, or ASYNC) */
arg[0] = PCSET;
pi->status_valid = 0;
if (!win)
- warning ("procfs: modify_flag failed to turn %s %s",
+ warning (_("procfs: modify_flag failed to turn %s %s"),
flag == PR_FORK ? "PR_FORK" :
flag == PR_RLC ? "PR_RLC" :
#ifdef PR_ASYNC
*/
int
-proc_set_run_on_last_close (pi)
- procinfo *pi;
+proc_set_run_on_last_close (procinfo *pi)
{
return proc_modify_flag (pi, PR_RLC, FLAG_SET);
}
*/
int
-proc_unset_run_on_last_close (pi)
- procinfo *pi;
+proc_unset_run_on_last_close (procinfo *pi)
{
return proc_modify_flag (pi, PR_RLC, FLAG_RESET);
}
*/
int
-proc_set_kill_on_last_close (pi)
- procinfo *pi;
+proc_set_kill_on_last_close (procinfo *pi)
{
return proc_modify_flag (pi, PR_KLC, FLAG_SET);
}
* Function: proc_unset_kill_on_last_close
*
* Reset the kill_on_last_close flag.
- * Process will NOT be killed when debugger
+ * Process will NOT be killed when debugger
* closes its file handles (or exits or dies).
*
* Returns non-zero for success, zero for failure.
*/
int
-proc_unset_kill_on_last_close (pi)
- procinfo *pi;
+proc_unset_kill_on_last_close (procinfo *pi)
{
return proc_modify_flag (pi, PR_KLC, FLAG_RESET);
}
*/
int
-proc_set_inherit_on_fork (pi)
- procinfo *pi;
+proc_set_inherit_on_fork (procinfo *pi)
{
return proc_modify_flag (pi, PR_FORK, FLAG_SET);
}
*/
int
-proc_unset_inherit_on_fork (pi)
- procinfo *pi;
+proc_unset_inherit_on_fork (procinfo *pi)
{
return proc_modify_flag (pi, PR_FORK, FLAG_RESET);
}
* Function: proc_set_async
*
* Set PR_ASYNC flag.
- * If one LWP stops because of a debug event (signal etc.),
+ * If one LWP stops because of a debug event (signal etc.),
* the remaining LWPs will continue to run.
*
* Returns non-zero for success, zero for failure.
*/
int
-proc_set_async (pi)
- procinfo *pi;
+proc_set_async (procinfo *pi)
{
return proc_modify_flag (pi, PR_ASYNC, FLAG_SET);
}
*/
int
-proc_unset_async (pi)
- procinfo *pi;
+proc_unset_async (procinfo *pi)
{
return proc_modify_flag (pi, PR_ASYNC, FLAG_RESET);
}
* Function: proc_stop_process
*
* Request the process/LWP to stop. Does not wait.
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_stop_process (pi)
- procinfo *pi;
+proc_stop_process (procinfo *pi)
{
int win;
else
{
#ifdef NEW_PROC_API
- int cmd = PCSTOP;
+ procfs_ctl_t cmd = PCSTOP;
win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
#else /* ioctl method */
win = (ioctl (pi->ctl_fd, PIOCSTOP, &pi->prstatus) >= 0);
if (win)
{
pi->status_valid = 1;
- PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
+ PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
proc_why (pi),
- proc_what (pi),
+ proc_what (pi),
proc_get_current_thread (pi));
}
#endif
* Function: proc_wait_for_stop
*
* Wait for the process or LWP to stop (block until it does).
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_wait_for_stop (pi)
- procinfo *pi;
+proc_wait_for_stop (procinfo *pi)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
- int cmd = PCWSTOP;
+ procfs_ctl_t cmd = PCWSTOP;
win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
/* We been runnin' and we stopped -- need to update status. */
pi->status_valid = 0;
if (win)
{
pi->status_valid = 1;
- PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
+ PROC_PRETTYFPRINT_STATUS (proc_flags (pi),
proc_why (pi),
- proc_what (pi),
+ proc_what (pi),
proc_get_current_thread (pi));
}
#endif
* signo if zero, clear the current signal if any.
* if non-zero, set the current signal to this one.
*
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_run_process (pi, step, signo)
- procinfo *pi;
- int step;
- int signo;
+proc_run_process (procinfo *pi, int step, int signo)
{
int win;
int runflags;
* We will probably have to apply this operation to individual threads,
* so make sure the control file descriptor is open.
*/
-
+
if (pi->ctl_fd == 0 &&
open_procinfo_files (pi, FD_CTL) == 0)
{
#ifdef NEW_PROC_API
{
- int cmd[2];
+ procfs_ctl_t cmd[2];
cmd[0] = PCRUN;
cmd[1] = runflags;
* Function: proc_set_traced_signals
*
* Register to trace signals in the process or LWP.
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_set_traced_signals (pi, sigset)
- procinfo *pi;
- sigset_t *sigset;
+proc_set_traced_signals (procinfo *pi, gdb_sigset_t *sigset)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
struct {
- int cmd;
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
- char sigset[sizeof (sigset_t)];
+ char sigset[sizeof (gdb_sigset_t)];
} arg;
arg.cmd = PCSTRACE;
- memcpy (&arg.sigset, sigset, sizeof (sigset_t));
+ memcpy (&arg.sigset, sigset, sizeof (gdb_sigset_t));
win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg));
}
pi->status_valid = 0;
if (!win)
- warning ("procfs: set_traced_signals failed");
+ warning (_("procfs: set_traced_signals failed"));
return win;
}
* Function: proc_set_traced_faults
*
* Register to trace hardware faults in the process or LWP.
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_set_traced_faults (pi, fltset)
- procinfo *pi;
- fltset_t *fltset;
+proc_set_traced_faults (procinfo *pi, fltset_t *fltset)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
struct {
- int cmd;
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
char fltset[sizeof (fltset_t)];
} arg;
* Function: proc_set_traced_sysentry
*
* Register to trace entry to system calls in the process or LWP.
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_set_traced_sysentry (pi, sysset)
- procinfo *pi;
- sysset_t *sysset;
+proc_set_traced_sysentry (procinfo *pi, sysset_t *sysset)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
- struct {
- int cmd;
+ struct gdb_proc_ctl_pcsentry {
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
char sysset[sizeof (sysset_t)];
- } arg;
+ } *argp;
+ int argp_size = sizeof (struct gdb_proc_ctl_pcsentry)
+ - sizeof (sysset_t)
+ + sysset_t_size (pi);
- arg.cmd = PCSENTRY;
- memcpy (&arg.sysset, sysset, sizeof (sysset_t));
+ argp = xmalloc (argp_size);
- win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg));
+ argp->cmd = PCSENTRY;
+ memcpy (&argp->sysset, sysset, sysset_t_size (pi));
+
+ win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size);
+ xfree (argp);
}
#else /* ioctl method */
win = (ioctl (pi->ctl_fd, PIOCSENTRY, sysset) >= 0);
#endif
/* The above operation renders the procinfo's cached pstatus obsolete. */
pi->status_valid = 0;
-
+
return win;
}
* Function: proc_set_traced_sysexit
*
* Register to trace exit from system calls in the process or LWP.
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_set_traced_sysexit (pi, sysset)
- procinfo *pi;
- sysset_t *sysset;
+proc_set_traced_sysexit (procinfo *pi, sysset_t *sysset)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
- struct {
- int cmd;
+ struct gdb_proc_ctl_pcsexit {
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
char sysset[sizeof (sysset_t)];
- } arg;
+ } *argp;
+ int argp_size = sizeof (struct gdb_proc_ctl_pcsexit)
+ - sizeof (sysset_t)
+ + sysset_t_size (pi);
- arg.cmd = PCSEXIT;
- memcpy (&arg.sysset, sysset, sizeof (sysset_t));
+ argp = xmalloc (argp_size);
- win = (write (pi->ctl_fd, (char *) &arg, sizeof (arg)) == sizeof (arg));
+ argp->cmd = PCSEXIT;
+ memcpy (&argp->sysset, sysset, sysset_t_size (pi));
+
+ win = (write (pi->ctl_fd, (char *) argp, argp_size) == argp_size);
+ xfree (argp);
}
#else /* ioctl method */
win = (ioctl (pi->ctl_fd, PIOCSEXIT, sysset) >= 0);
* Function: proc_set_held_signals
*
* Specify the set of blocked / held signals in the process or LWP.
- * Returns non-zero for success, zero for failure.
+ * Returns non-zero for success, zero for failure.
*/
int
-proc_set_held_signals (pi, sighold)
- procinfo *pi;
- sigset_t *sighold;
+proc_set_held_signals (procinfo *pi, gdb_sigset_t *sighold)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
struct {
- int cmd;
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
- char hold[sizeof (sigset_t)];
+ char hold[sizeof (gdb_sigset_t)];
} arg;
arg.cmd = PCSHOLD;
- memcpy (&arg.hold, sighold, sizeof (sigset_t));
+ memcpy (&arg.hold, sighold, sizeof (gdb_sigset_t));
win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
}
#else
* Will also copy the sigset if 'save' is non-zero.
*/
-sigset_t *
-proc_get_pending_signals (pi, save)
- procinfo *pi;
- sigset_t *save;
+gdb_sigset_t *
+proc_get_pending_signals (procinfo *pi, gdb_sigset_t *save)
{
- sigset_t *ret = NULL;
+ gdb_sigset_t *ret = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
ret = &pi->prstatus.pr_sigpend;
#endif
if (save && ret)
- memcpy (save, ret, sizeof (sigset_t));
+ memcpy (save, ret, sizeof (gdb_sigset_t));
return ret;
}
* Will also copy the sigactionset if 'save' is non-zero.
*/
-struct sigaction *
-proc_get_signal_actions (pi, save)
- procinfo *pi;
- struct sigaction *save;
+gdb_sigaction_t *
+proc_get_signal_actions (procinfo *pi, gdb_sigaction_t *save)
{
- struct sigaction *ret = NULL;
+ gdb_sigaction_t *ret = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
ret = &pi->prstatus.pr_action;
#endif
if (save && ret)
- memcpy (save, ret, sizeof (struct sigaction));
+ memcpy (save, ret, sizeof (gdb_sigaction_t));
return ret;
}
* Will also copy the sigset if 'save' is non-zero.
*/
-sigset_t *
-proc_get_held_signals (pi, save)
- procinfo *pi;
- sigset_t *save;
+gdb_sigset_t *
+proc_get_held_signals (procinfo *pi, gdb_sigset_t *save)
{
- sigset_t *ret = NULL;
+ gdb_sigset_t *ret = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#endif /* UNIXWARE */
#else /* not NEW_PROC_API */
{
- static sigset_t sigheld;
+ static gdb_sigset_t sigheld;
if (ioctl (pi->ctl_fd, PIOCGHOLD, &sigheld) >= 0)
ret = &sigheld;
}
#endif /* NEW_PROC_API */
if (save && ret)
- memcpy (save, ret, sizeof (sigset_t));
+ memcpy (save, ret, sizeof (gdb_sigset_t));
return ret;
}
* Will also copy the sigset if 'save' is non-zero.
*/
-sigset_t *
-proc_get_traced_signals (pi, save)
- procinfo *pi;
- sigset_t *save;
+gdb_sigset_t *
+proc_get_traced_signals (procinfo *pi, gdb_sigset_t *save)
{
- sigset_t *ret = NULL;
+ gdb_sigset_t *ret = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
ret = &pi->prstatus.pr_sigtrace;
#else
{
- static sigset_t sigtrace;
+ static gdb_sigset_t sigtrace;
if (ioctl (pi->ctl_fd, PIOCGTRACE, &sigtrace) >= 0)
ret = &sigtrace;
}
#endif
if (save && ret)
- memcpy (save, ret, sizeof (sigset_t));
+ memcpy (save, ret, sizeof (gdb_sigset_t));
return ret;
}
*/
int
-proc_trace_signal (pi, signo)
- procinfo *pi;
- int signo;
+proc_trace_signal (procinfo *pi, int signo)
{
- sigset_t temp;
+ gdb_sigset_t temp;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
*/
int
-proc_ignore_signal (pi, signo)
- procinfo *pi;
- int signo;
+proc_ignore_signal (procinfo *pi, int signo)
{
- sigset_t temp;
+ gdb_sigset_t temp;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
*/
fltset_t *
-proc_get_traced_faults (pi, save)
- procinfo *pi;
- fltset_t *save;
+proc_get_traced_faults (procinfo *pi, fltset_t *save)
{
fltset_t *ret = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
*/
sysset_t *
-proc_get_traced_sysentry (pi, save)
- procinfo *pi;
- sysset_t *save;
+proc_get_traced_sysentry (procinfo *pi, sysset_t *save)
{
sysset_t *ret = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
if (!proc_get_status (pi))
return NULL;
+#ifndef DYNAMIC_SYSCALLS
ret = &pi->prstatus.pr_sysentry;
-#else
+#else /* DYNAMIC_SYSCALLS */
+ {
+ static sysset_t *sysentry;
+ size_t size;
+
+ if (!sysentry)
+ sysentry = sysset_t_alloc (pi);
+ ret = sysentry;
+ if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0)
+ return NULL;
+ if (pi->prstatus.pr_sysentry_offset == 0)
+ {
+ gdb_premptysysset (sysentry);
+ }
+ else
+ {
+ int rsize;
+
+ if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysentry_offset,
+ SEEK_SET)
+ != (off_t) pi->prstatus.pr_sysentry_offset)
+ return NULL;
+ size = sysset_t_size (pi);
+ gdb_premptysysset (sysentry);
+ rsize = read (pi->status_fd, sysentry, size);
+ if (rsize < 0)
+ return NULL;
+ }
+ }
+#endif /* DYNAMIC_SYSCALLS */
+#else /* !NEW_PROC_API */
{
static sysset_t sysentry;
if (ioctl (pi->ctl_fd, PIOCGENTRY, &sysentry) >= 0)
ret = &sysentry;
}
-#endif
+#endif /* NEW_PROC_API */
if (save && ret)
- memcpy (save, ret, sizeof (sysset_t));
+ memcpy (save, ret, sysset_t_size (pi));
return ret;
}
*/
sysset_t *
-proc_get_traced_sysexit (pi, save)
- procinfo *pi;
- sysset_t *save;
+proc_get_traced_sysexit (procinfo *pi, sysset_t *save)
{
sysset_t * ret = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
if (!proc_get_status (pi))
return NULL;
+#ifndef DYNAMIC_SYSCALLS
ret = &pi->prstatus.pr_sysexit;
+#else /* DYNAMIC_SYSCALLS */
+ {
+ static sysset_t *sysexit;
+ size_t size;
+
+ if (!sysexit)
+ sysexit = sysset_t_alloc (pi);
+ ret = sysexit;
+ if (pi->status_fd == 0 && open_procinfo_files (pi, FD_STATUS) == 0)
+ return NULL;
+ if (pi->prstatus.pr_sysexit_offset == 0)
+ {
+ gdb_premptysysset (sysexit);
+ }
+ else
+ {
+ int rsize;
+
+ if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysexit_offset, SEEK_SET)
+ != (off_t) pi->prstatus.pr_sysexit_offset)
+ return NULL;
+ size = sysset_t_size (pi);
+ gdb_premptysysset (sysexit);
+ rsize = read (pi->status_fd, sysexit, size);
+ if (rsize < 0)
+ return NULL;
+ }
+ }
+#endif /* DYNAMIC_SYSCALLS */
#else
{
static sysset_t sysexit;
}
#endif
if (save && ret)
- memcpy (save, ret, sizeof (sysset_t));
+ memcpy (save, ret, sysset_t_size (pi));
return ret;
}
*/
int
-proc_clear_current_fault (pi)
- procinfo *pi;
+proc_clear_current_fault (procinfo *pi)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
- int cmd = PCCFAULT;
+ procfs_ctl_t cmd = PCCFAULT;
win = (write (pi->ctl_fd, (void *) &cmd, sizeof (cmd)) == sizeof (cmd));
}
#else
*/
int
-proc_set_current_signal (pi, signo)
- procinfo *pi;
- int signo;
+proc_set_current_signal (procinfo *pi, int signo)
{
int win;
struct {
- int cmd;
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
- char sinfo[sizeof (struct siginfo)];
+ char sinfo[sizeof (gdb_siginfo_t)];
} arg;
- struct siginfo *mysinfo;
+ gdb_siginfo_t *mysinfo;
+ ptid_t wait_ptid;
+ struct target_waitstatus wait_status;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#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.
+ * it messes up the current signal. Work around the kernel bug.
*/
if (signo > 0 &&
signo == proc_cursig (pi))
#endif
/* The pointer is just a type alias. */
- mysinfo = (struct siginfo *) &arg.sinfo;
- mysinfo->si_signo = signo;
- mysinfo->si_code = 0;
- mysinfo->si_pid = getpid (); /* ?why? */
- mysinfo->si_uid = getuid (); /* ?why? */
+ mysinfo = (gdb_siginfo_t *) &arg.sinfo;
+ get_last_target_status (&wait_ptid, &wait_status);
+ if (ptid_equal (wait_ptid, inferior_ptid)
+ && wait_status.kind == TARGET_WAITKIND_STOPPED
+ && wait_status.value.sig == target_signal_from_host (signo)
+ && proc_get_status (pi)
+#ifdef NEW_PROC_API
+ && pi->prstatus.pr_lwp.pr_info.si_signo == signo
+#else
+ && pi->prstatus.pr_info.si_signo == signo
+#endif
+ )
+ /* Use the siginfo associated with the signal being
+ redelivered. */
+#ifdef NEW_PROC_API
+ memcpy (mysinfo, &pi->prstatus.pr_lwp.pr_info, sizeof (gdb_siginfo_t));
+#else
+ memcpy (mysinfo, &pi->prstatus.pr_info, sizeof (gdb_siginfo_t));
+#endif
+ else
+ {
+ mysinfo->si_signo = signo;
+ mysinfo->si_code = 0;
+ mysinfo->si_pid = getpid (); /* ?why? */
+ mysinfo->si_uid = getuid (); /* ?why? */
+ }
#ifdef NEW_PROC_API
arg.cmd = PCSSIG;
*/
int
-proc_clear_current_signal (pi)
- procinfo *pi;
+proc_clear_current_signal (procinfo *pi)
{
int win;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#ifdef NEW_PROC_API
{
struct {
- int cmd;
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
- char sinfo[sizeof (struct siginfo)];
+ char sinfo[sizeof (gdb_siginfo_t)];
} arg;
- struct siginfo *mysinfo;
+ gdb_siginfo_t *mysinfo;
arg.cmd = PCSSIG;
/* The pointer is just a type alias. */
- mysinfo = (struct siginfo *) &arg.sinfo;
+ mysinfo = (gdb_siginfo_t *) &arg.sinfo;
mysinfo->si_signo = 0;
mysinfo->si_code = 0;
mysinfo->si_errno = 0;
return win;
}
-/*
- * Function: proc_get_gregs
- *
- * Get the general registers for the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
+/* Return the general-purpose registers for the process or LWP
+ corresponding to PI. Upon failure, return NULL. */
gdb_gregset_t *
-proc_get_gregs (pi)
- procinfo *pi;
+proc_get_gregs (procinfo *pi)
{
if (!pi->status_valid || !pi->gregs_valid)
if (!proc_get_status (pi))
return NULL;
- /*
- * OK, sorry about the ifdef's.
- * There's three cases instead of two, because
- * in this instance Unixware and Solaris/RW differ.
- */
+ /* OK, sorry about the ifdef's. There's three cases instead of two,
+ because in this case Unixware and Solaris/RW differ. */
#ifdef NEW_PROC_API
-#ifdef UNIXWARE /* ugh, a true architecture dependency */
+# ifdef UNIXWARE /* FIXME: Should be autoconfigured. */
return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.gregs;
-#else /* not Unixware */
+# else
return &pi->prstatus.pr_lwp.pr_reg;
-#endif /* Unixware */
-#else /* not NEW_PROC_API */
+# endif
+#else
return &pi->prstatus.pr_reg;
-#endif /* NEW_PROC_API */
+#endif
}
-/*
- * Function: proc_get_fpregs
- *
- * Get the floating point registers for the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
+/* Return the general-purpose registers for the process or LWP
+ corresponding to PI. Upon failure, return NULL. */
gdb_fpregset_t *
-proc_get_fpregs (pi)
- procinfo *pi;
+proc_get_fpregs (procinfo *pi)
{
#ifdef NEW_PROC_API
if (!pi->status_valid || !pi->fpregs_valid)
if (!proc_get_status (pi))
return NULL;
-#ifdef UNIXWARE /* a true architecture dependency */
+# ifdef UNIXWARE /* FIXME: Should be autoconfigured. */
return &pi->prstatus.pr_lwp.pr_context.uc_mcontext.fpregs;
-#else
+# else
return &pi->prstatus.pr_lwp.pr_fpreg;
-#endif /* Unixware */
+# endif
-#else /* not NEW_PROC_API */
+#else /* not NEW_PROC_API */
if (pi->fpregs_valid)
- return &pi->fpregset; /* already got 'em */
+ return &pi->fpregset; /* Already got 'em. */
else
{
- if (pi->ctl_fd == 0 &&
- open_procinfo_files (pi, FD_CTL) == 0)
+ if (pi->ctl_fd == 0 && open_procinfo_files (pi, FD_CTL) == 0)
{
return NULL;
}
else
{
-#ifdef PIOCTGFPREG
+# ifdef PIOCTGFPREG
struct {
long pr_count;
tid_t pr_error_thread;
thread_fpregs.pr_count = 1;
thread_fpregs.thread_1.tid = pi->tid;
- if (pi->tid == 0 &&
- ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0)
+ if (pi->tid == 0
+ && ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0)
{
pi->fpregs_valid = 1;
- return &pi->fpregset; /* got 'em now! */
+ return &pi->fpregset; /* Got 'em now! */
}
- else if (pi->tid != 0 &&
- ioctl (pi->ctl_fd, PIOCTGFPREG, &thread_fpregs) >= 0)
+ else if (pi->tid != 0
+ && ioctl (pi->ctl_fd, PIOCTGFPREG, &thread_fpregs) >= 0)
{
memcpy (&pi->fpregset, &thread_fpregs.thread_1.pr_fpregs,
sizeof (pi->fpregset));
pi->fpregs_valid = 1;
- return &pi->fpregset; /* got 'em now! */
+ return &pi->fpregset; /* Got 'em now! */
}
else
{
return NULL;
}
-#else
+# else
if (ioctl (pi->ctl_fd, PIOCGFPREG, &pi->fpregset) >= 0)
{
pi->fpregs_valid = 1;
- return &pi->fpregset; /* got 'em now! */
+ return &pi->fpregset; /* Got 'em now! */
}
else
{
return NULL;
}
-#endif
+# endif
}
}
-#endif
+#endif /* NEW_PROC_API */
}
-/*
- * Function: proc_set_gregs
- *
- * Write the general registers back to the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
+/* Write the general-purpose registers back to the process or LWP
+ corresponding to PI. Return non-zero for success, zero for
+ failure. */
int
-proc_set_gregs (pi)
- procinfo *pi;
+proc_set_gregs (procinfo *pi)
{
gdb_gregset_t *gregs;
int win;
- if ((gregs = proc_get_gregs (pi)) == NULL)
- return 0; /* get_regs has already warned */
+ gregs = proc_get_gregs (pi);
+ if (gregs == NULL)
+ return 0; /* proc_get_regs has already warned. */
- if (pi->ctl_fd == 0 &&
- open_procinfo_files (pi, FD_CTL) == 0)
+ if (pi->ctl_fd == 0 && open_procinfo_files (pi, FD_CTL) == 0)
{
return 0;
}
{
#ifdef NEW_PROC_API
struct {
- int cmd;
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
char gregs[sizeof (gdb_gregset_t)];
} arg;
- arg.cmd = PCSREG;
+ arg.cmd = PCSREG;
memcpy (&arg.gregs, gregs, sizeof (arg.gregs));
win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
#else
#endif
}
- /* Policy: writing the regs invalidates our cache. */
+ /* Policy: writing the registers invalidates our cache. */
pi->gregs_valid = 0;
return win;
}
-/*
- * Function: proc_set_fpregs
- *
- * Modify the floating point register set of the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
+/* Write the floating-pointer registers back to the process or LWP
+ corresponding to PI. Return non-zero for success, zero for
+ failure. */
int
-proc_set_fpregs (pi)
- procinfo *pi;
+proc_set_fpregs (procinfo *pi)
{
gdb_fpregset_t *fpregs;
int win;
- if ((fpregs = proc_get_fpregs (pi)) == NULL)
- return 0; /* get_fpregs has already warned */
+ fpregs = proc_get_fpregs (pi);
+ if (fpregs == NULL)
+ return 0; /* proc_get_fpregs has already warned. */
- if (pi->ctl_fd == 0 &&
- open_procinfo_files (pi, FD_CTL) == 0)
+ if (pi->ctl_fd == 0 && open_procinfo_files (pi, FD_CTL) == 0)
{
return 0;
}
{
#ifdef NEW_PROC_API
struct {
- int cmd;
+ procfs_ctl_t cmd;
/* Use char array to avoid alignment issues. */
char fpregs[sizeof (gdb_fpregset_t)];
} arg;
- arg.cmd = PCSFPREG;
+ arg.cmd = PCSFPREG;
memcpy (&arg.fpregs, fpregs, sizeof (arg.fpregs));
win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
#else
-#ifdef PIOCTSFPREG
+# ifdef PIOCTSFPREG
if (pi->tid == 0)
win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0);
else
sizeof (*fpregs));
win = (ioctl (pi->ctl_fd, PIOCTSFPREG, &thread_fpregs) >= 0);
}
-#else
+# else
win = (ioctl (pi->ctl_fd, PIOCSFPREG, fpregs) >= 0);
-#endif /* osf PIOCTSFPREG */
-#endif /* NEW_PROC_API */
+# endif
+#endif /* NEW_PROC_API */
}
- /* Policy: writing the regs invalidates our cache. */
+ /* Policy: writing the registers invalidates our cache. */
pi->fpregs_valid = 0;
return win;
}
*/
int
-proc_kill (pi, signo)
- procinfo *pi;
- int signo;
+proc_kill (procinfo *pi, int signo)
{
int win;
else
{
#ifdef NEW_PROC_API
- int cmd[2];
+ procfs_ctl_t cmd[2];
cmd[0] = PCKILL;
cmd[1] = signo;
*/
int
-proc_parent_pid (pi)
- procinfo *pi;
+proc_parent_pid (procinfo *pi)
{
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
}
+/* Convert a target address (a.k.a. CORE_ADDR) into a host address
+ (a.k.a void pointer)! */
+
+static void *
+procfs_address_to_host_pointer (CORE_ADDR addr)
+{
+ void *ptr;
+
+ gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr));
+ gdbarch_address_to_pointer (current_gdbarch, builtin_type_void_data_ptr,
+ &ptr, addr);
+ return ptr;
+}
+
/*
* Function: proc_set_watchpoint
*
*/
int
-proc_set_watchpoint (pi, addr, len, wflags)
- procinfo *pi;
- void *addr;
- int len;
- int wflags;
+proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags)
{
-#if !defined (TARGET_HAS_HARDWARE_WATCHPOINTS)
+#if !defined (TARGET_HAS_HARDWARE_WATCHPOINTS)
return 0;
#else
/* Horrible hack! Detect Solaris 2.5, because this doesn't work on 2.5 */
return 0;
#else
struct {
- int cmd;
+ procfs_ctl_t cmd;
char watch[sizeof (prwatch_t)];
} arg;
prwatch_t *pwatch;
pwatch = (prwatch_t *) &arg.watch;
- pwatch->pr_vaddr = addr;
+ /* NOTE: cagney/2003-02-01: Even more horrible hack. Need to
+ convert a target address into something that can be stored in a
+ native data structure. */
+#ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */
+ pwatch->pr_vaddr = (uintptr_t) procfs_address_to_host_pointer (addr);
+#else
+ pwatch->pr_vaddr = (caddr_t) procfs_address_to_host_pointer (addr);
+#endif
pwatch->pr_size = len;
pwatch->pr_wflags = wflags;
#if defined(NEW_PROC_API) && defined (PCWATCH)
#endif
}
-/*
- * Function: proc_iterate_over_mappings
- *
- * Given a pointer to a function, call that function once for every
- * mapped address space in the process. The callback function
- * receives an open file descriptor for the file corresponding to
- * that mapped address space (if there is one), and the base address
- * of the mapped space. Quit when the callback function returns a
- * nonzero value, or at teh end of the mappings.
- *
- * Returns: the first non-zero return value of the callback function,
- * or zero.
- */
-
-/* FIXME: it's probably a waste to cache this FD.
- It doesn't get called that often... and if I open it
- every time, I don't need to lseek it. */
-int
-proc_iterate_over_mappings (func)
- int (*func) PARAMS ((int, CORE_ADDR));
-{
- struct prmap *map;
- procinfo *pi;
-#ifndef NEW_PROC_API /* avoid compiler warning */
- int nmaps = 0;
- int i;
-#else
- int map_fd;
- char pathname[MAX_PROC_NAME_SIZE];
-#endif
- int funcstat = 0;
- int fd;
-
- pi = find_procinfo_or_die (PIDGET (inferior_pid), 0);
-
-#ifdef NEW_PROC_API
- /* Open map fd. */
- sprintf (pathname, "/proc/%d/map", pi->pid);
- if ((map_fd = open (pathname, O_RDONLY)) < 0)
- proc_error (pi, "proc_iterate_over_mappings (open)", __LINE__);
-
- /* Make sure it gets closed again. */
- make_cleanup ((make_cleanup_func) close, (void *) map_fd);
-
- /* Allocate space for mapping (lifetime only for this function). */
- map = alloca (sizeof (struct prmap));
-
- /* Now read the mappings from the file,
- open a file descriptor for those that have a name,
- and call the callback function. */
- while (read (map_fd,
- (void *) map,
- sizeof (struct prmap)) == sizeof (struct prmap))
- {
- char name[MAX_PROC_NAME_SIZE + sizeof (map->pr_mapname)];
-
- if (map->pr_vaddr == 0 && map->pr_size == 0)
- break; /* sanity */
-
- if (map->pr_mapname[0] == 0)
- {
- fd = -1; /* no map file */
- }
- else
- {
- sprintf (name, "/proc/%d/object/%s", pi->pid, map->pr_mapname);
- /* Note: caller's responsibility to close this fd! */
- fd = open (name, O_RDONLY);
- /* Note: we don't test the above call for failure;
- we just pass the FD on as given. Sometimes there is
- no file, so the ioctl may return failure, but that's
- not a problem. */
- }
-
- /* Stop looping if the callback returns non-zero. */
- if ((funcstat = (*func) (fd, (CORE_ADDR) map->pr_vaddr)) != 0)
- break;
- }
-#else
- /* Get the number of mapping entries. */
- if (ioctl (pi->ctl_fd, PIOCNMAP, &nmaps) < 0)
- proc_error (pi, "proc_iterate_over_mappings (PIOCNMAP)", __LINE__);
-
- /* Allocate space for mappings (lifetime only this function). */
- map = (struct prmap *) alloca ((nmaps + 1) * sizeof (struct prmap));
-
- /* Read in all the mappings. */
- if (ioctl (pi->ctl_fd, PIOCMAP, map) < 0)
- proc_error (pi, "proc_iterate_over_mappings (PIOCMAP)", __LINE__);
-
- /* Now loop through the mappings, open an fd for each, and
- call the callback function. */
- for (i = 0;
- i < nmaps && map[i].pr_size != 0;
- i++)
- {
- /* Note: caller's responsibility to close this fd! */
- fd = ioctl (pi->ctl_fd, PIOCOPENM, &map[i].pr_vaddr);
- /* Note: we don't test the above call for failure;
- we just pass the FD on as given. Sometimes there is
- no file, so the ioctl may return failure, but that's
- not a problem. */
-
- /* Stop looping if the callback returns non-zero. */
- if ((funcstat = (*func) (fd, (CORE_ADDR) map[i].pr_vaddr)) != 0)
- break;
- }
-#endif
-
- return funcstat;
-}
-
#ifdef TM_I386SOL2_H /* Is it hokey to use this? */
#include <sys/sysi86.h>
*/
struct ssd *
-proc_get_LDT_entry (pi, key)
- procinfo *pi;
- int key;
+proc_get_LDT_entry (procinfo *pi, int key)
{
static struct ssd *ldt_entry = NULL;
#ifdef NEW_PROC_API
/* Open the file descriptor for the LDT table. */
sprintf (pathname, "/proc/%d/ldt", pi->pid);
- if ((fd = open (pathname, O_RDONLY)) < 0)
+ if ((fd = open_with_retry (pathname, O_RDONLY)) < 0)
{
proc_warn (pi, "proc_get_LDT_entry (open)", __LINE__);
return NULL;
}
/* Make sure it gets closed again! */
- old_chain = make_cleanup ((make_cleanup_func) close, (void *) fd);
+ old_chain = make_cleanup_close (fd);
/* Now 'read' thru the table, find a match and return it. */
while (read (fd, ldt_entry, sizeof (struct ssd)) == sizeof (struct ssd))
/* This alloc has to persist, 'cause we return a pointer to it. */
if (nldt > nalloc)
{
- ldt_entry = (struct ssd *)
+ ldt_entry = (struct ssd *)
xrealloc (ldt_entry, (nldt + 1) * sizeof (struct ssd));
nalloc = nldt;
}
-
+
/* Read the whole table in one gulp. */
if (ioctl (pi->ctl_fd, PIOCLDT, ldt_entry) < 0)
{
since there is a different way to do threads on every OS. */
/*
- * Function: proc_get_nthreads
+ * Function: proc_get_nthreads
*
- * Return the number of threads for the process
+ * Return the number of threads for the process
*/
#if defined (PIOCNTHR) && defined (PIOCTLIST)
/*
* OSF version
*/
-int
-proc_get_nthreads (pi)
- procinfo *pi;
+int
+proc_get_nthreads (procinfo *pi)
{
int nthreads = 0;
* Solaris and Unixware version
*/
int
-proc_get_nthreads (pi)
- procinfo *pi;
+proc_get_nthreads (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
return 0;
/*
- * NEW_PROC_API: only works for the process procinfo,
+ * NEW_PROC_API: only works for the process procinfo,
* because the LWP procinfos do not get prstatus filled in.
*/
-#ifdef NEW_PROC_API
+#ifdef NEW_PROC_API
if (pi->tid != 0) /* find the parent process procinfo */
pi = find_procinfo_or_die (pi->pid, 0);
#endif
* Default version
*/
int
-proc_get_nthreads (pi)
- procinfo *pi;
+proc_get_nthreads (procinfo *pi)
{
return 0;
}
* Solaris and Unixware version
*/
int
-proc_get_current_thread (pi)
- procinfo *pi;
+proc_get_current_thread (procinfo *pi)
{
/*
* Note: this should be applied to the root procinfo for the process,
* not to the procinfo for an LWP. If applied to the procinfo for
- * an LWP, it will simply return that LWP's ID. In that case,
+ * an LWP, it will simply return that LWP's ID. In that case,
* find the parent process procinfo.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
/*
* OSF version
*/
-int
-proc_get_current_thread (pi)
- procinfo *pi;
+int
+proc_get_current_thread (procinfo *pi)
{
#if 0 /* FIXME: not ready for prime time? */
return pi->prstatus.pr_tid;
/*
* Default version
*/
-int
-proc_get_current_thread (pi)
- procinfo *pi;
+int
+proc_get_current_thread (procinfo *pi)
{
return 0;
}
#endif
/*
- * Function: proc_update_threads
+ * Function: proc_update_threads
*
* Discover the IDs of all the threads within the process, and
* create a procinfo for each of them (chained to the parent).
*/
int
-proc_delete_dead_threads (parent, thread, ignore)
- procinfo *parent;
- procinfo *thread;
- void *ignore;
+proc_delete_dead_threads (procinfo *parent, procinfo *thread, void *ignore)
{
if (thread && parent) /* sanity */
{
* Solaris 2.5 (ioctl) version
*/
int
-proc_update_threads (pi)
- procinfo *pi;
+proc_update_threads (procinfo *pi)
{
gdb_prstatus_t *prstatus;
struct cleanup *old_chain = NULL;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
if ((nlwp = proc_get_nthreads (pi)) <= 1)
return 1; /* Process is not multi-threaded; nothing to do. */
- if ((prstatus = (gdb_prstatus_t *)
- malloc (sizeof (gdb_prstatus_t) * (nlwp + 1))) == 0)
- perror_with_name ("procfs: malloc failed in update_threads");
+ prstatus = xmalloc (sizeof (gdb_prstatus_t) * (nlwp + 1));
- old_chain = make_cleanup (free, prstatus);
+ old_chain = make_cleanup (xfree, prstatus);
if (ioctl (pi->ctl_fd, PIOCLSTATUS, prstatus) < 0)
proc_error (pi, "update_threads (PIOCLSTATUS)", __LINE__);
/*
* Unixware and Solaris 6 (and later) version
*/
+static void
+do_closedir_cleanup (void *dir)
+{
+ closedir (dir);
+}
+
int
-proc_update_threads (pi)
- procinfo *pi;
+proc_update_threads (procinfo *pi)
{
char pathname[MAX_PROC_NAME_SIZE + 16];
struct dirent *direntry;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
/*
* Unixware
*
- * Note: this brute-force method is the only way I know of
- * to accomplish this task on Unixware. This method will
+ * Note: this brute-force method is the only way I know of
+ * to accomplish this task on Unixware. This method will
* also work on Solaris 2.6 and 2.7. There is a much simpler
* and more elegant way to do this on Solaris, but the margins
* of this manuscript are too small to write it here... ;-)
if ((dirp = opendir (pathname)) == NULL)
proc_error (pi, "update_threads, opendir", __LINE__);
- old_chain = make_cleanup ((make_cleanup_func) closedir, dirp);
+ old_chain = make_cleanup (do_closedir_cleanup, dirp);
while ((direntry = readdir (dirp)) != NULL)
if (direntry->d_name[0] != '.') /* skip '.' and '..' */
{
/*
* OSF version
*/
-int
-proc_update_threads (pi)
- procinfo *pi;
+int
+proc_update_threads (procinfo *pi)
{
int nthreads, i;
tid_t *threads;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
if (nthreads < 2)
return 0; /* nothing to do for 1 or fewer threads */
- if ((threads = malloc (nthreads * sizeof (tid_t))) == NULL)
- proc_error (pi, "update_threads, malloc", __LINE__);
-
+ threads = xmalloc (nthreads * sizeof (tid_t));
+
if (ioctl (pi->ctl_fd, PIOCTLIST, threads) < 0)
proc_error (pi, "procfs: update_threads (PIOCTLIST)", __LINE__);
* Default version
*/
int
-proc_update_threads (pi)
- procinfo *pi;
+proc_update_threads (procinfo *pi)
{
return 0;
}
* Note: this function does NOT call update_threads.
* If you want to discover new threads first, you must
* call that function explicitly. This function just makes
- * a quick pass over the currently-known procinfos.
- *
+ * a quick pass over the currently-known procinfos.
+ *
* Arguments:
* pi - parent process procinfo
* func - per-thread function
*/
int
-proc_iterate_over_threads (pi, func, ptr)
- procinfo *pi;
- int (*func) PARAMS ((procinfo *, procinfo *, void *));
- void *ptr;
+proc_iterate_over_threads (procinfo *pi,
+ int (*func) (procinfo *, procinfo *, void *),
+ void *ptr)
{
procinfo *thread, *next;
int retval = 0;
/*
* We should never have to apply this operation to any procinfo
* except the one for the main process. If that ever changes
- * for any reason, then take out the following clause and
+ * for any reason, then take out the following clause and
* replace it with one that makes sure the ctl_fd is open.
*/
-
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
* Here are all of the gdb target vector functions and their friends.
*/
-static int do_attach PARAMS ((int pid));
-static void do_detach PARAMS ((int signo));
-static int register_gdb_signals PARAMS ((procinfo *, sigset_t *));
+static ptid_t do_attach (ptid_t ptid);
+static void do_detach (int signo);
+static int register_gdb_signals (procinfo *, gdb_sigset_t *);
+static void proc_trace_syscalls_1 (procinfo *pi, int syscallnum,
+ int entry_or_exit, int mode, int from_tty);
+static int insert_dbx_link_breakpoint (procinfo *pi);
+static void remove_dbx_link_breakpoint (void);
+
+/* On mips-irix, we need to insert a breakpoint at __dbx_link during
+ the startup phase. The following two variables are used to record
+ the address of the breakpoint, and the code that was replaced by
+ a breakpoint. */
+static int dbx_link_bpt_addr = 0;
+static void *dbx_link_bpt;
/*
* Function: procfs_debug_inferior
*/
static int
-procfs_debug_inferior (pi)
- procinfo *pi;
+procfs_debug_inferior (procinfo *pi)
{
fltset_t traced_faults;
- sigset_t traced_signals;
- sysset_t traced_syscall_entries;
- sysset_t traced_syscall_exits;
+ gdb_sigset_t traced_signals;
+ sysset_t *traced_syscall_entries;
+ sysset_t *traced_syscall_exits;
+ int status;
#ifdef PROCFS_DONT_TRACE_FAULTS
/* On some systems (OSF), we don't trace hardware faults.
if (!register_gdb_signals (pi, &traced_signals))
return __LINE__;
+
/* Register to trace the 'exit' system call (on entry). */
- premptyset (&traced_syscall_entries);
- praddset (&traced_syscall_entries, SYS_exit);
+ traced_syscall_entries = sysset_t_alloc (pi);
+ gdb_premptysysset (traced_syscall_entries);
+#ifdef SYS_exit
+ gdb_praddsysset (traced_syscall_entries, SYS_exit);
+#endif
#ifdef SYS_lwpexit
- praddset (&traced_syscall_entries, SYS_lwpexit); /* And _lwp_exit... */
+ gdb_praddsysset (traced_syscall_entries, SYS_lwpexit); /* And _lwp_exit... */
#endif
#ifdef SYS_lwp_exit
- praddset (&traced_syscall_entries, SYS_lwp_exit);
+ gdb_praddsysset (traced_syscall_entries, SYS_lwp_exit);
+#endif
+#ifdef DYNAMIC_SYSCALLS
+ {
+ int callnum = find_syscall (pi, "_exit");
+ if (callnum >= 0)
+ gdb_praddsysset (traced_syscall_entries, callnum);
+ }
#endif
- if (!proc_set_traced_sysentry (pi, &traced_syscall_entries))
+ status = proc_set_traced_sysentry (pi, traced_syscall_entries);
+ xfree (traced_syscall_entries);
+ if (!status)
return __LINE__;
#ifdef PRFS_STOPEXEC /* defined on OSF */
names. On the SGI, for example, there is no SYS_exec, but there
*is* a SYS_execv. So, we try to account for that. */
- premptyset (&traced_syscall_exits);
+ traced_syscall_exits = sysset_t_alloc (pi);
+ gdb_premptysysset (traced_syscall_exits);
#ifdef SYS_exec
- praddset (&traced_syscall_exits, SYS_exec);
+ gdb_praddsysset (traced_syscall_exits, SYS_exec);
#endif
#ifdef SYS_execve
- praddset (&traced_syscall_exits, SYS_execve);
+ gdb_praddsysset (traced_syscall_exits, SYS_execve);
#endif
#ifdef SYS_execv
- praddset (&traced_syscall_exits, SYS_execv);
+ gdb_praddsysset (traced_syscall_exits, SYS_execv);
#endif
#ifdef SYS_lwpcreate
- praddset (&traced_syscall_exits, SYS_lwpcreate);
- praddset (&traced_syscall_exits, SYS_lwpexit);
+ gdb_praddsysset (traced_syscall_exits, SYS_lwpcreate);
+ gdb_praddsysset (traced_syscall_exits, SYS_lwpexit);
#endif
#ifdef SYS_lwp_create /* FIXME: once only, please */
- praddset (&traced_syscall_exits, SYS_lwp_create);
- praddset (&traced_syscall_exits, SYS_lwp_exit);
+ gdb_praddsysset (traced_syscall_exits, SYS_lwp_create);
+ gdb_praddsysset (traced_syscall_exits, SYS_lwp_exit);
#endif
+#ifdef DYNAMIC_SYSCALLS
+ {
+ int callnum = find_syscall (pi, "execve");
+ if (callnum >= 0)
+ gdb_praddsysset (traced_syscall_exits, callnum);
+ callnum = find_syscall (pi, "ra_execve");
+ if (callnum >= 0)
+ gdb_praddsysset (traced_syscall_exits, callnum);
+ }
+#endif
- if (!proc_set_traced_sysexit (pi, &traced_syscall_exits))
+ status = proc_set_traced_sysexit (pi, traced_syscall_exits);
+ xfree (traced_syscall_exits);
+ if (!status)
return __LINE__;
#endif /* PRFS_STOPEXEC */
return 0;
}
-static void
-procfs_attach (args, from_tty)
- char *args;
- int from_tty;
+static void
+procfs_attach (char *args, int from_tty)
{
char *exec_file;
int pid;
if (!args)
- error_no_arg ("process-id to attach");
+ error_no_arg (_("process-id to attach"));
pid = atoi (args);
if (pid == getpid ())
- error ("Attaching GDB to itself is not a good idea...");
+ error (_("Attaching GDB to itself is not a good idea..."));
if (from_tty)
{
exec_file = get_exec_file (0);
if (exec_file)
- printf_filtered ("Attaching to program `%s', %s\n",
- exec_file, target_pid_to_str (pid));
+ printf_filtered (_("Attaching to program `%s', %s\n"),
+ exec_file, target_pid_to_str (pid_to_ptid (pid)));
else
- printf_filtered ("Attaching to %s\n", target_pid_to_str (pid));
+ printf_filtered (_("Attaching to %s\n"),
+ target_pid_to_str (pid_to_ptid (pid)));
fflush (stdout);
}
- inferior_pid = do_attach (pid);
+ inferior_ptid = do_attach (pid_to_ptid (pid));
push_target (&procfs_ops);
}
-static void
-procfs_detach (args, from_tty)
- char *args;
- int from_tty;
+static void
+procfs_detach (char *args, int from_tty)
{
- char *exec_file;
- int signo = 0;
+ int sig = 0;
+
+ if (args)
+ sig = atoi (args);
if (from_tty)
{
+ int pid = PIDGET (inferior_ptid);
+ char *exec_file;
+
exec_file = get_exec_file (0);
- if (exec_file == 0)
+ if (exec_file == NULL)
exec_file = "";
- printf_filtered ("Detaching from program: %s %s\n",
- exec_file, target_pid_to_str (inferior_pid));
- fflush (stdout);
+
+ printf_filtered (_("Detaching from program: %s, %s\n"), exec_file,
+ target_pid_to_str (pid_to_ptid (pid)));
+ gdb_flush (gdb_stdout);
}
- if (args)
- signo = atoi (args);
-
- do_detach (signo);
- inferior_pid = 0;
- unpush_target (&procfs_ops); /* Pop out of handling an inferior */
+
+ do_detach (sig);
+
+ inferior_ptid = null_ptid;
+ unpush_target (&procfs_ops);
}
-static int
-do_attach (pid)
- int pid;
+static ptid_t
+do_attach (ptid_t ptid)
{
procinfo *pi;
int fail;
- if ((pi = create_procinfo (pid, 0)) == NULL)
- perror ("procfs: out of memory in 'attach'");
+ if ((pi = create_procinfo (PIDGET (ptid), 0)) == NULL)
+ perror (_("procfs: out of memory in 'attach'"));
if (!open_procinfo_files (pi, FD_CTL))
{
fprintf_filtered (gdb_stderr, "procfs:%d -- ", __LINE__);
- sprintf (errmsg, "do_attach: couldn't open /proc file for process %d",
- pid);
+ sprintf (errmsg, "do_attach: couldn't open /proc file for process %d",
+ PIDGET (ptid));
dead_procinfo (pi, errmsg, NOKILL);
}
dead_procinfo (pi, "do_attach: couldn't save traced faults.", NOKILL);
if (!proc_get_traced_signals (pi, &pi->saved_sigset))
dead_procinfo (pi, "do_attach: couldn't save traced signals.", NOKILL);
- if (!proc_get_traced_sysentry (pi, &pi->saved_entryset))
+ if (!proc_get_traced_sysentry (pi, pi->saved_entryset))
dead_procinfo (pi, "do_attach: couldn't save traced syscall entries.",
NOKILL);
- if (!proc_get_traced_sysexit (pi, &pi->saved_exitset))
- dead_procinfo (pi, "do_attach: couldn't save traced syscall exits.",
+ if (!proc_get_traced_sysexit (pi, pi->saved_exitset))
+ dead_procinfo (pi, "do_attach: couldn't save traced syscall exits.",
NOKILL);
if (!proc_get_held_signals (pi, &pi->saved_sighold))
dead_procinfo (pi, "do_attach: couldn't save held signals.", NOKILL);
}
static void
-do_detach (signo)
- int signo;
+do_detach (int signo)
{
procinfo *pi;
/* Find procinfo for the main process */
- pi = find_procinfo_or_die (PIDGET (inferior_pid), 0); /* FIXME: threads */
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); /* FIXME: threads */
if (signo)
if (!proc_set_current_signal (pi, signo))
proc_warn (pi, "do_detach, set_current_signal", __LINE__);
if (!proc_set_traced_faults (pi, &pi->saved_fltset))
proc_warn (pi, "do_detach, set_traced_faults", __LINE__);
- if (!proc_set_traced_sysentry (pi, &pi->saved_entryset))
+ if (!proc_set_traced_sysentry (pi, pi->saved_entryset))
proc_warn (pi, "do_detach, set_traced_sysentry", __LINE__);
- if (!proc_set_traced_sysexit (pi, &pi->saved_exitset))
+ if (!proc_set_traced_sysexit (pi, pi->saved_exitset))
proc_warn (pi, "do_detach, set_traced_sysexit", __LINE__);
if (!proc_set_held_signals (pi, &pi->saved_sighold))
if (signo || (proc_flags (pi) & (PR_STOPPED | PR_ISTOP)))
if (signo || !(pi->was_stopped) ||
- query ("Was stopped when attached, make it runnable again? "))
+ query (_("Was stopped when attached, make it runnable again? ")))
{
/* Clear any pending signal. */
if (!proc_clear_current_fault (pi))
proc_warn (pi, "do_detach, clear_current_fault", __LINE__);
+ if (signo == 0 && !proc_clear_current_signal (pi))
+ proc_warn (pi, "do_detach, clear_current_signal", __LINE__);
+
if (!proc_set_run_on_last_close (pi))
proc_warn (pi, "do_detach, set_rlc", __LINE__);
}
destroy_procinfo (pi);
}
-/*
- * fetch_registers
- *
- * Since the /proc interface cannot give us individual registers,
- * we pay no attention to the (regno) argument, and just fetch them all.
- * This results in the possibility that we will do unnecessarily many
- * fetches, since we may be called repeatedly for individual registers.
- * So we cache the results, and mark the cache invalid when the process
- * is resumed.
- */
+/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
+ for all registers.
+
+ ??? Is the following note still relevant? We can't get individual
+ registers with the PT_GETREGS ptrace(2) request either, yet we
+ don't bother with caching at all in that case.
+
+ NOTE: Since the /proc interface cannot give us individual
+ registers, we pay no attention to REGNUM, and just fetch them all.
+ This results in the possibility that we will do unnecessarily many
+ fetches, since we may be called repeatedly for individual
+ registers. So we cache the results, and mark the cache invalid
+ when the process is resumed. */
static void
-procfs_fetch_registers (regno)
- int regno;
+procfs_fetch_registers (struct regcache *regcache, int regnum)
{
- gdb_fpregset_t *fpregs;
- gdb_gregset_t *gregs;
- procinfo *pi;
- int pid;
- int tid;
-
- pid = PIDGET (inferior_pid);
- tid = TIDGET (inferior_pid);
+ gdb_gregset_t *gregs;
+ procinfo *pi;
+ int pid = PIDGET (inferior_ptid);
+ int tid = TIDGET (inferior_ptid);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
- /* First look up procinfo for the main process. */
- pi = find_procinfo_or_die (pid, 0);
+ /* First look up procinfo for the main process. */
+ pi = find_procinfo_or_die (pid, 0);
- /* If the event thread is not the same as GDB's requested thread
- (ie. inferior_pid), then look up procinfo for the requested
+ /* If the event thread is not the same as GDB's requested thread
+ (ie. inferior_ptid), then look up procinfo for the requested
thread. */
- if ((tid != 0) &&
- (tid != proc_get_current_thread (pi)))
+ if (tid != 0 && tid != proc_get_current_thread (pi))
pi = find_procinfo_or_die (pid, tid);
if (pi == NULL)
- error ("procfs: fetch_registers failed to find procinfo for %s",
- target_pid_to_str (inferior_pid));
+ error (_("procfs: fetch_registers failed to find procinfo for %s"),
+ target_pid_to_str (inferior_ptid));
- if ((gregs = proc_get_gregs (pi)) == NULL)
+ gregs = proc_get_gregs (pi);
+ if (gregs == NULL)
proc_error (pi, "fetch_registers, get_gregs", __LINE__);
- supply_gregset (gregs);
+ supply_gregset (regcache, (const gdb_gregset_t *) gregs);
-#if defined (FP0_REGNUM) /* need floating point? */
- if ((regno >= 0 && regno < FP0_REGNUM) ||
- regno == PC_REGNUM ||
-#ifdef NPC_REGNUM
- regno == NPC_REGNUM ||
-#endif
- regno == FP_REGNUM ||
- regno == SP_REGNUM)
- return; /* not a floating point register */
+ if (gdbarch_fp0_regnum (gdbarch) >= 0) /* Do we have an FPU? */
+ {
+ gdb_fpregset_t *fpregs;
- if ((fpregs = proc_get_fpregs (pi)) == NULL)
- proc_error (pi, "fetch_registers, get_fpregs", __LINE__);
+ if ((regnum >= 0 && regnum < gdbarch_fp0_regnum (gdbarch))
+ || regnum == gdbarch_pc_regnum (gdbarch)
+ || regnum == gdbarch_sp_regnum (gdbarch))
+ return; /* Not a floating point register. */
- supply_fpregset (fpregs);
-#endif
+ fpregs = proc_get_fpregs (pi);
+ if (fpregs == NULL)
+ proc_error (pi, "fetch_registers, get_fpregs", __LINE__);
+
+ supply_fpregset (regcache, (const gdb_fpregset_t *) fpregs);
+ }
}
/* Get ready to modify the registers array. On machines which store
from the program being debugged. */
static void
-procfs_prepare_to_store ()
+procfs_prepare_to_store (struct regcache *regcache)
{
-#ifdef CHILD_PREPARE_TO_STORE
- CHILD_PREPARE_TO_STORE ();
-#endif
}
-/*
- * store_registers
- *
- * Since the /proc interface will not read individual registers,
- * we will cache these requests until the process is resumed, and
- * only then write them back to the inferior process.
- *
- * FIXME: is that a really bad idea? Have to think about cases
- * where writing one register might affect the value of others, etc.
- */
+/* Store register REGNUM back into the inferior. If REGNUM is -1, do
+ this for all registers.
+
+ NOTE: Since the /proc interface will not read individual registers,
+ we will cache these requests until the process is resumed, and only
+ then write them back to the inferior process.
+
+ FIXME: is that a really bad idea? Have to think about cases where
+ writing one register might affect the value of others, etc. */
static void
-procfs_store_registers (regno)
- int regno;
+procfs_store_registers (struct regcache *regcache, int regnum)
{
- gdb_fpregset_t *fpregs;
- gdb_gregset_t *gregs;
- procinfo *pi;
- int pid;
- int tid;
-
- pid = PIDGET (inferior_pid);
- tid = TIDGET (inferior_pid);
-
- /* First find procinfo for main process */
- pi = find_procinfo_or_die (pid, 0);
+ gdb_gregset_t *gregs;
+ procinfo *pi;
+ int pid = PIDGET (inferior_ptid);
+ int tid = TIDGET (inferior_ptid);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
- /* If current lwp for process is not the same as requested thread
- (ie. inferior_pid), then find procinfo for the requested thread. */
+ /* First find procinfo for main process. */
+ pi = find_procinfo_or_die (pid, 0);
- if ((tid != 0) &&
- (tid != proc_get_current_thread (pi)))
+ /* If the event thread is not the same as GDB's requested thread
+ (ie. inferior_ptid), then look up procinfo for the requested
+ thread. */
+ if (tid != 0 && tid != proc_get_current_thread (pi))
pi = find_procinfo_or_die (pid, tid);
if (pi == NULL)
- error ("procfs: store_registers: failed to find procinfo for %s",
- target_pid_to_str (inferior_pid));
+ error (_("procfs: store_registers: failed to find procinfo for %s"),
+ target_pid_to_str (inferior_ptid));
- if ((gregs = proc_get_gregs (pi)) == NULL)
+ gregs = proc_get_gregs (pi);
+ if (gregs == NULL)
proc_error (pi, "store_registers, get_gregs", __LINE__);
- fill_gregset (gregs, regno);
+ fill_gregset (regcache, gregs, regnum);
if (!proc_set_gregs (pi))
proc_error (pi, "store_registers, set_gregs", __LINE__);
-#if defined (FP0_REGNUM) /* need floating point? */
- if ((regno >= 0 && regno < FP0_REGNUM) ||
- regno == PC_REGNUM ||
-#ifdef NPC_REGNUM
- regno == NPC_REGNUM ||
+ if (gdbarch_fp0_regnum (gdbarch) >= 0) /* Do we have an FPU? */
+ {
+ gdb_fpregset_t *fpregs;
+
+ if ((regnum >= 0 && regnum < gdbarch_fp0_regnum (gdbarch))
+ || regnum == gdbarch_pc_regnum (gdbarch)
+ || regnum == gdbarch_sp_regnum (gdbarch))
+ return; /* Not a floating point register. */
+
+ fpregs = proc_get_fpregs (pi);
+ if (fpregs == NULL)
+ proc_error (pi, "store_registers, get_fpregs", __LINE__);
+
+ fill_fpregset (regcache, fpregs, regnum);
+ if (!proc_set_fpregs (pi))
+ proc_error (pi, "store_registers, set_fpregs", __LINE__);
+ }
+}
+
+static int
+syscall_is_lwp_exit (procinfo *pi, int scall)
+{
+
+#ifdef SYS_lwp_exit
+ if (scall == SYS_lwp_exit)
+ return 1;
+#endif
+#ifdef SYS_lwpexit
+ if (scall == SYS_lwpexit)
+ return 1;
+#endif
+ return 0;
+}
+
+static int
+syscall_is_exit (procinfo *pi, int scall)
+{
+#ifdef SYS_exit
+ if (scall == SYS_exit)
+ return 1;
+#endif
+#ifdef DYNAMIC_SYSCALLS
+ if (find_syscall (pi, "_exit") == scall)
+ return 1;
#endif
- regno == FP_REGNUM ||
- regno == SP_REGNUM)
- return; /* not a floating point register */
+ return 0;
+}
- if ((fpregs = proc_get_fpregs (pi)) == NULL)
- proc_error (pi, "store_registers, get_fpregs", __LINE__);
+static int
+syscall_is_exec (procinfo *pi, int scall)
+{
+#ifdef SYS_exec
+ if (scall == SYS_exec)
+ return 1;
+#endif
+#ifdef SYS_execv
+ if (scall == SYS_execv)
+ return 1;
+#endif
+#ifdef SYS_execve
+ if (scall == SYS_execve)
+ return 1;
+#endif
+#ifdef DYNAMIC_SYSCALLS
+ if (find_syscall (pi, "_execve"))
+ return 1;
+ if (find_syscall (pi, "ra_execve"))
+ return 1;
+#endif
+ return 0;
+}
- fill_fpregset (fpregs, regno);
- if (!proc_set_fpregs (pi))
- proc_error (pi, "store_registers, set_fpregs", __LINE__);
+static int
+syscall_is_lwp_create (procinfo *pi, int scall)
+{
+#ifdef SYS_lwp_create
+ if (scall == SYS_lwp_create)
+ return 1;
+#endif
+#ifdef SYS_lwpcreate
+ if (scall == SYS_lwpcreate)
+ return 1;
#endif
+ return 0;
}
/*
* event codes are returned thru a pointer parameter.
*/
-static int
-procfs_wait (pid, status)
- int pid;
- struct target_waitstatus *status;
+static ptid_t
+procfs_wait (ptid_t ptid, struct target_waitstatus *status)
{
/* First cut: loosely based on original version 2.1 */
procinfo *pi;
- int temp, wstat;
- int retval;
+ int wstat;
+ int temp_tid;
+ ptid_t retval, temp_ptid;
int why, what, flags;
int retry = 0;
retry++;
wstat = 0;
- retval = -1;
+ retval = pid_to_ptid (-1);
/* Find procinfo for main process */
- pi = find_procinfo_or_die (PIDGET (inferior_pid), 0);
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
if (pi)
{
/* We must assume that the status is stale now... */
/* wait_for_stop failed: has the child terminated? */
if (errno == ENOENT)
{
+ int wait_retval;
+
/* /proc file not found; presumably child has terminated. */
- retval = wait (&wstat); /* "wait" for the child's exit */
+ wait_retval = wait (&wstat); /* "wait" for the child's exit */
- if (retval != PIDGET (inferior_pid)) /* wrong child? */
- error ("procfs: couldn't stop process %d: wait returned %d\n",
- inferior_pid, retval);
+ if (wait_retval != PIDGET (inferior_ptid)) /* wrong child? */
+ error (_("procfs: couldn't stop process %d: wait returned %d."),
+ PIDGET (inferior_ptid), wait_retval);
/* FIXME: might I not just use waitpid?
Or try find_procinfo to see if I know about this child? */
+ retval = pid_to_ptid (wait_retval);
}
+ else if (errno == EINTR)
+ goto wait_again;
else
{
/* Unknown error from wait_for_stop. */
into a waitstatus for GDB.
If we actually had to call wait because the /proc file
- is gone (child terminated), then we skip this block,
+ is gone (child terminated), then we skip this block,
because we already have a waitstatus. */
flags = proc_flags (pi);
wstat = (what << 8) | 0177;
break;
case PR_SYSENTRY:
- switch (what) {
-#ifdef SYS_lwp_exit
- case SYS_lwp_exit:
-#endif
-#ifdef SYS_lwpexit
- case SYS_lwpexit:
-#endif
-#if defined (SYS_lwp_exit) || defined (SYS_lwpexit)
- printf_filtered ("[%s exited]\n",
- target_pid_to_str (retval));
- delete_thread (retval);
- status->kind = TARGET_WAITKIND_SPURIOUS;
- return retval;
-#endif /* _lwp_exit */
-
- case SYS_exit:
- /* Handle SYS_exit call only */
- /* Stopped at entry to SYS_exit.
- Make it runnable, resume it, then use
- the wait system call to get its exit code.
- Proc_run_process always clears the current
- fault and signal.
- Then return its exit status. */
- pi->status_valid = 0;
- wstat = 0;
- /* FIXME: what we should do is return
- TARGET_WAITKIND_SPURIOUS. */
- if (!proc_run_process (pi, 0, 0))
- proc_error (pi, "target_wait, run_process", __LINE__);
- if (attach_flag)
- {
- /* Don't call wait: simulate waiting for exit,
- return a "success" exit code. Bogus: what if
- it returns something else? */
- wstat = 0;
- retval = inferior_pid; /* ??? */
- }
- else
- {
- int temp = wait (&wstat);
-
- /* FIXME: shouldn't I make sure I get the right
- event from the right process? If (for
- instance) I have killed an earlier inferior
- process but failed to clean up after it
- somehow, I could get its termination event
- here. */
-
- /* If wait returns -1, that's what we return to GDB. */
- if (temp < 0)
- retval = temp;
- }
- break;
- default:
- printf_filtered ("procfs: trapped on entry to ");
- proc_prettyprint_syscall (proc_what (pi), 0);
- printf_filtered ("\n");
-#ifndef PIOCSSPCACT
+ if (syscall_is_lwp_exit (pi, what))
{
- long i, nsysargs, *sysargs;
-
- if ((nsysargs = proc_nsysarg (pi)) > 0 &&
- (sysargs = proc_sysargs (pi)) != NULL)
+ printf_filtered (_("[%s exited]\n"),
+ target_pid_to_str (retval));
+ delete_thread (retval);
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return retval;
+ }
+ else if (syscall_is_exit (pi, what))
+ {
+ /* Handle SYS_exit call only */
+ /* Stopped at entry to SYS_exit.
+ Make it runnable, resume it, then use
+ the wait system call to get its exit code.
+ Proc_run_process always clears the current
+ fault and signal.
+ Then return its exit status. */
+ pi->status_valid = 0;
+ wstat = 0;
+ /* FIXME: what we should do is return
+ TARGET_WAITKIND_SPURIOUS. */
+ if (!proc_run_process (pi, 0, 0))
+ proc_error (pi, "target_wait, run_process", __LINE__);
+ if (attach_flag)
{
- printf_filtered ("%ld syscall arguments:\n", nsysargs);
- for (i = 0; i < nsysargs; i++)
- printf_filtered ("#%ld: 0x%08x\n",
- i, sysargs[i]);
+ /* Don't call wait: simulate waiting for exit,
+ return a "success" exit code. Bogus: what if
+ it returns something else? */
+ wstat = 0;
+ retval = inferior_ptid; /* ? ? ? */
+ }
+ else
+ {
+ int temp = wait (&wstat);
+
+ /* FIXME: shouldn't I make sure I get the right
+ event from the right process? If (for
+ instance) I have killed an earlier inferior
+ process but failed to clean up after it
+ somehow, I could get its termination event
+ here. */
+
+ /* If wait returns -1, that's what we return to GDB. */
+ if (temp < 0)
+ retval = pid_to_ptid (temp);
}
-
}
-#endif
- if (status)
- {
- /* How to exit gracefully, returning "unknown event" */
- status->kind = TARGET_WAITKIND_SPURIOUS;
- return inferior_pid;
- }
- else
+ else
+ {
+ printf_filtered (_("procfs: trapped on entry to "));
+ proc_prettyprint_syscall (proc_what (pi), 0);
+ printf_filtered ("\n");
+#ifndef PIOCSSPCACT
{
- /* How to keep going without returning to wfi: */
- target_resume (pid, 0, TARGET_SIGNAL_0);
- goto wait_again;
+ long i, nsysargs, *sysargs;
+
+ if ((nsysargs = proc_nsysarg (pi)) > 0 &&
+ (sysargs = proc_sysargs (pi)) != NULL)
+ {
+ printf_filtered (_("%ld syscall arguments:\n"), nsysargs);
+ for (i = 0; i < nsysargs; i++)
+ printf_filtered ("#%ld: 0x%08lx\n",
+ i, sysargs[i]);
+ }
+
}
- break;
- }
+#endif
+ if (status)
+ {
+ /* How to exit gracefully, returning "unknown event" */
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return inferior_ptid;
+ }
+ else
+ {
+ /* How to keep going without returning to wfi: */
+ target_resume (ptid, 0, TARGET_SIGNAL_0);
+ goto wait_again;
+ }
+ }
break;
case PR_SYSEXIT:
- switch (what) {
-#ifdef SYS_exec
- case SYS_exec:
-#endif
-#ifdef SYS_execv
- case SYS_execv:
-#endif
-#ifdef SYS_execve
- case SYS_execve:
-#endif
- /* Hopefully this is our own "fork-child" execing
- the real child. Hoax this event into a trap, and
- GDB will see the child about to execute its start
- address. */
- wstat = (SIGTRAP << 8) | 0177;
- break;
-#ifdef SYS_lwp_create
- case SYS_lwp_create:
-#endif
-#ifdef SYS_lwpcreate
- case SYS_lwpcreate:
-#endif
-#if defined(SYS_lwp_create) || defined(SYS_lwpcreate)
- /*
- * This syscall is somewhat like fork/exec.
- * We will get the event twice: once for the parent LWP,
- * and once for the child. We should already know about
- * the parent LWP, but the child will be new to us. So,
- * whenever we get this event, if it represents a new
- * thread, simply add the thread to the list.
- */
-
- /* If not in procinfo list, add it. */
- temp = proc_get_current_thread (pi);
- if (!find_procinfo (pi->pid, temp))
- create_procinfo (pi->pid, temp);
-
- temp = MERGEPID (pi->pid, temp);
- /* If not in GDB's thread list, add it. */
- if (!in_thread_list (temp))
- {
- printf_filtered ("[New %s]\n", target_pid_to_str (temp));
- add_thread (temp);
- }
- /* Return to WFI, but tell it to immediately resume. */
- status->kind = TARGET_WAITKIND_SPURIOUS;
- return inferior_pid;
-#endif /* _lwp_create */
-
-#ifdef SYS_lwp_exit
- case SYS_lwp_exit:
+ if (syscall_is_exec (pi, what))
+ {
+ /* Hopefully this is our own "fork-child" execing
+ the real child. Hoax this event into a trap, and
+ GDB will see the child about to execute its start
+ address. */
+ wstat = (SIGTRAP << 8) | 0177;
+ }
+#ifdef SYS_syssgi
+ else if (what == SYS_syssgi)
+ {
+ /* see if we can break on dbx_link(). If yes, then
+ we no longer need the SYS_syssgi notifications. */
+ if (insert_dbx_link_breakpoint (pi))
+ proc_trace_syscalls_1 (pi, SYS_syssgi, PR_SYSEXIT,
+ FLAG_RESET, 0);
+
+ /* This is an internal event and should be transparent
+ to wfi, so resume the execution and wait again. See
+ comment in procfs_init_inferior() for more details. */
+ target_resume (ptid, 0, TARGET_SIGNAL_0);
+ goto wait_again;
+ }
#endif
-#ifdef SYS_lwpexit
- case SYS_lwpexit:
-#endif
-#if defined (SYS_lwp_exit) || defined (SYS_lwpexit)
- printf_filtered ("[%s exited]\n",
- target_pid_to_str (retval));
- delete_thread (retval);
- status->kind = TARGET_WAITKIND_SPURIOUS;
- return retval;
-#endif /* _lwp_exit */
-
-#ifdef SYS_sproc
- case SYS_sproc:
- /* Nothing to do here for now. The old procfs
- seemed to use this event to handle threads on
- older (non-LWP) systems, where I'm assuming that
- threads were actually separate processes. Irix,
- maybe? Anyway, low priority for now. */
-#endif
-#ifdef SYS_fork
- case SYS_fork:
- /* FIXME: do we need to handle this? Investigate. */
-#endif
-#ifdef SYS_vfork
- case SYS_vfork:
- /* FIXME: see above. */
-#endif
- default:
- printf_filtered ("procfs: trapped on exit from ");
- proc_prettyprint_syscall (proc_what (pi), 0);
- printf_filtered ("\n");
-#ifndef PIOCSSPCACT
+ else if (syscall_is_lwp_create (pi, what))
{
- long i, nsysargs, *sysargs;
+ /*
+ * This syscall is somewhat like fork/exec.
+ * We will get the event twice: once for the parent LWP,
+ * and once for the child. We should already know about
+ * the parent LWP, but the child will be new to us. So,
+ * whenever we get this event, if it represents a new
+ * thread, simply add the thread to the list.
+ */
+
+ /* If not in procinfo list, add it. */
+ temp_tid = proc_get_current_thread (pi);
+ if (!find_procinfo (pi->pid, temp_tid))
+ create_procinfo (pi->pid, temp_tid);
- if ((nsysargs = proc_nsysarg (pi)) > 0 &&
- (sysargs = proc_sysargs (pi)) != NULL)
+ temp_ptid = MERGEPID (pi->pid, temp_tid);
+ /* If not in GDB's thread list, add it. */
+ if (!in_thread_list (temp_ptid))
{
- printf_filtered ("%ld syscall arguments:\n", nsysargs);
- for (i = 0; i < nsysargs; i++)
- printf_filtered ("#%ld: 0x%08x\n",
- i, sysargs[i]);
+ printf_filtered (_("[New %s]\n"),
+ target_pid_to_str (temp_ptid));
+ add_thread (temp_ptid);
}
+ /* Return to WFI, but tell it to immediately resume. */
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return inferior_ptid;
+ }
+ else if (syscall_is_lwp_exit (pi, what))
+ {
+ printf_filtered (_("[%s exited]\n"),
+ target_pid_to_str (retval));
+ delete_thread (retval);
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return retval;
+ }
+ else if (0)
+ {
+ /* FIXME: Do we need to handle SYS_sproc,
+ SYS_fork, or SYS_vfork here? The old procfs
+ seemed to use this event to handle threads on
+ older (non-LWP) systems, where I'm assuming
+ that threads were actually separate processes.
+ Irix, maybe? Anyway, low priority for now. */
}
+ else
+ {
+ printf_filtered (_("procfs: trapped on exit from "));
+ proc_prettyprint_syscall (proc_what (pi), 0);
+ printf_filtered ("\n");
+#ifndef PIOCSSPCACT
+ {
+ long i, nsysargs, *sysargs;
+
+ if ((nsysargs = proc_nsysarg (pi)) > 0 &&
+ (sysargs = proc_sysargs (pi)) != NULL)
+ {
+ printf_filtered (_("%ld syscall arguments:\n"), nsysargs);
+ for (i = 0; i < nsysargs; i++)
+ printf_filtered ("#%ld: 0x%08lx\n",
+ i, sysargs[i]);
+ }
+ }
#endif
- status->kind = TARGET_WAITKIND_SPURIOUS;
- return inferior_pid;
- }
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return inferior_ptid;
+ }
break;
case PR_REQUESTED:
#if 0 /* FIXME */
#else
if (retry < 5)
{
- printf_filtered ("Retry #%d:\n", retry);
+ printf_filtered (_("Retry #%d:\n"), retry);
pi->status_valid = 0;
goto wait_again;
}
else
{
/* If not in procinfo list, add it. */
- temp = proc_get_current_thread (pi);
- if (!find_procinfo (pi->pid, temp))
- create_procinfo (pi->pid, temp);
+ temp_tid = proc_get_current_thread (pi);
+ if (!find_procinfo (pi->pid, temp_tid))
+ create_procinfo (pi->pid, temp_tid);
/* If not in GDB's thread list, add it. */
- temp = MERGEPID (pi->pid, temp);
- if (!in_thread_list (temp))
+ temp_ptid = MERGEPID (pi->pid, temp_tid);
+ if (!in_thread_list (temp_ptid))
{
- printf_filtered ("[New %s]\n",
- target_pid_to_str (temp));
- add_thread (temp);
+ printf_filtered (_("[New %s]\n"),
+ target_pid_to_str (temp_ptid));
+ add_thread (temp_ptid);
}
status->kind = TARGET_WAITKIND_STOPPED;
wstat = (what << 8) | 0177;
break;
case PR_FAULTED:
- switch (what) { /* FIXME: FAULTED_USE_SIGINFO */
+ switch (what) {
#ifdef FLTWATCH
case FLTWATCH:
wstat = (SIGTRAP << 8) | 0177;
#if (FLTTRACE != FLTBPT) /* avoid "duplicate case" error */
case FLTTRACE:
#endif
+ /* If we hit our __dbx_link() internal breakpoint,
+ then remove it. See comments in procfs_init_inferior()
+ for more details. */
+ if (dbx_link_bpt_addr != 0
+ && dbx_link_bpt_addr == read_pc ())
+ remove_dbx_link_breakpoint ();
+
wstat = (SIGTRAP << 8) | 0177;
break;
case FLTSTACK:
break;
case FLTPAGE: /* Recoverable page fault */
default: /* FIXME: use si_signo if possible for fault */
- retval = -1;
+ retval = pid_to_ptid (-1);
printf_filtered ("procfs:%d -- ", __LINE__);
- printf_filtered ("child stopped for unknown reason:\n");
+ printf_filtered (_("child stopped for unknown reason:\n"));
proc_prettyprint_why (why, what, 1);
- error ("... giving up...");
+ error (_("... giving up..."));
break;
}
break; /* case PR_FAULTED: */
default: /* switch (why) unmatched */
printf_filtered ("procfs:%d -- ", __LINE__);
- printf_filtered ("child stopped for unknown reason:\n");
+ printf_filtered (_("child stopped for unknown reason:\n"));
proc_prettyprint_why (why, what, 1);
- error ("... giving up...");
+ error (_("... giving up..."));
break;
}
/*
* Got this far without error:
* If retval isn't in the threads database, add it.
*/
- if (retval > 0 &&
- retval != inferior_pid &&
+ if (PIDGET (retval) > 0 &&
+ !ptid_equal (retval, inferior_ptid) &&
!in_thread_list (retval))
{
/*
- * We have a new thread.
+ * We have a new thread.
* We need to add it both to GDB's list and to our own.
- * If we don't create a procinfo, resume may be unhappy
+ * If we don't create a procinfo, resume may be unhappy
* later.
*/
- printf_filtered ("[New %s]\n", target_pid_to_str (retval));
+ printf_filtered (_("[New %s]\n"), target_pid_to_str (retval));
add_thread (retval);
if (find_procinfo (PIDGET (retval), TIDGET (retval)) == NULL)
create_procinfo (PIDGET (retval), TIDGET (retval));
/* In addition, it's possible that this is the first
- * new thread we've seen, in which case we may not
- * have created entries for inferior_pid yet.
+ * new thread we've seen, in which case we may not
+ * have created entries for inferior_ptid yet.
*/
- if (TIDGET (inferior_pid) != 0)
+ if (TIDGET (inferior_ptid) != 0)
{
- if (!in_thread_list (inferior_pid))
- add_thread (inferior_pid);
- if (find_procinfo (PIDGET (inferior_pid),
- TIDGET (inferior_pid)) == NULL)
- create_procinfo (PIDGET (inferior_pid),
- TIDGET (inferior_pid));
+ if (!in_thread_list (inferior_ptid))
+ add_thread (inferior_ptid);
+ if (find_procinfo (PIDGET (inferior_ptid),
+ TIDGET (inferior_ptid)) == NULL)
+ create_procinfo (PIDGET (inferior_ptid),
+ TIDGET (inferior_ptid));
}
}
}
printf_filtered ("procfs:%d -- process not stopped.\n",
__LINE__);
proc_prettyprint_flags (flags, 1);
- error ("procfs: ...giving up...");
+ error (_("procfs: ...giving up..."));
}
}
return retval;
}
+/* Perform a partial transfer to/from the specified object. For
+ memory transfers, fall back to the old memory xfer functions. */
+
+static LONGEST
+procfs_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, void *readbuf,
+ const void *writebuf, ULONGEST offset, LONGEST len)
+{
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return (*ops->deprecated_xfer_memory) (offset, readbuf, len,
+ 0/*write*/, NULL, ops);
+ if (writebuf)
+ return (*ops->deprecated_xfer_memory) (offset, writebuf, len,
+ 1/*write*/, NULL, ops);
+ return -1;
+
+#ifdef NEW_PROC_API
+ case TARGET_OBJECT_AUXV:
+ return procfs_xfer_auxv (ops, object, annex, readbuf, writebuf,
+ offset, len);
+#endif
+
+ default:
+ if (ops->beneath != NULL)
+ return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
+ readbuf, writebuf, offset, len);
+ return -1;
+ }
+}
+
+
+/* Transfer LEN bytes between GDB address MYADDR and target address
+ MEMADDR. If DOWRITE is non-zero, transfer them to the target,
+ otherwise transfer them from the target. TARGET is unused.
+
+ The return value is 0 if an error occurred or no bytes were
+ transferred. Otherwise, it will be a positive value which
+ indicates the number of bytes transferred between gdb and the
+ target. (Note that the interface also makes provisions for
+ negative values, but this capability isn't implemented here.) */
+
static int
-procfs_xfer_memory (memaddr, myaddr, len, dowrite, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int dowrite;
- struct target_ops *target; /* ignored */
+procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite,
+ struct mem_attrib *attrib, struct target_ops *target)
{
procinfo *pi;
int nbytes = 0;
/* Find procinfo for main process */
- pi = find_procinfo_or_die (PIDGET (inferior_pid), 0);
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
if (pi->as_fd == 0 &&
open_procinfo_files (pi, FD_AS) == 0)
{
* If there are "dirty" caches that need to be written back
* to the child process, do that.
*
- * File descriptors are also cached.
+ * File descriptors are also cached.
* As they are a limited resource, we cannot hold onto them indefinitely.
* However, as they are expensive to open, we don't want to throw them
* away indescriminately either. As a compromise, we will keep the
* descriptors we may have accumulated for the threads.
*
* Return value:
- * As this function is called by iterate_over_threads, it always
+ * As this function is called by iterate_over_threads, it always
* returns zero (so that iterate_over_threads will keep iterating).
*/
static int
-invalidate_cache (parent, pi, ptr)
- procinfo *parent;
- procinfo *pi;
- void *ptr;
+invalidate_cache (procinfo *parent, procinfo *pi, void *ptr)
{
/*
* About to run the child; invalidate caches and do any other cleanup.
if (!proc_set_gregs (pi)) /* flush gregs cache */
proc_warn (pi, "target_resume, set_gregs",
__LINE__);
-#ifdef FP0_REGNUM
- if (pi->fpregs_dirty)
- if (parent == NULL ||
- proc_get_current_thread (parent) != pi->tid)
- if (!proc_set_fpregs (pi)) /* flush fpregs cache */
- proc_warn (pi, "target_resume, set_fpregs",
- __LINE__);
-#endif
+ if (gdbarch_fp0_regnum (current_gdbarch) >= 0)
+ if (pi->fpregs_dirty)
+ if (parent == NULL ||
+ proc_get_current_thread (parent) != pi->tid)
+ if (!proc_set_fpregs (pi)) /* flush fpregs cache */
+ proc_warn (pi, "target_resume, set_fpregs",
+ __LINE__);
#endif
if (parent != NULL)
{
/* The presence of a parent indicates that this is an LWP.
- Close any file descriptors that it might have open.
+ Close any file descriptors that it might have open.
We don't do this to the master (parent) procinfo. */
close_procinfo_files (pi);
*/
static int
-make_signal_thread_runnable (process, pi, ptr)
- procinfo *process;
- procinfo *pi;
- void *ptr;
+make_signal_thread_runnable (procinfo *process, procinfo *pi, void *ptr)
{
#ifdef PR_ASLWP
if (proc_flags (pi) & PR_ASLWP)
* procfs_wait and wait for it to stop again (unles gdb is async).
*
* Arguments:
- * step: if true, then arrange for the child to stop again
+ * step: if true, then arrange for the child to stop again
* after executing a single instruction.
* signo: if zero, then cancel any pending signal.
- * If non-zero, then arrange for the indicated signal
+ * If non-zero, then arrange for the indicated signal
* to be delivered to the child when it runs.
* pid: if -1, then allow any child thread to run.
* if non-zero, then allow only the indicated thread to run.
*/
static void
-procfs_resume (pid, step, signo)
- int pid;
- int step;
- enum target_signal signo;
+procfs_resume (ptid_t ptid, int step, enum target_signal signo)
{
procinfo *pi, *thread;
int native_signo;
- /* 2.1:
+ /* 2.1:
prrun.prflags |= PRSVADDR;
- prrun.pr_vaddr = $PC; set resume address
+ prrun.pr_vaddr = $PC; set resume address
prrun.prflags |= PRSTRACE; trace signals in pr_trace (all)
- prrun.prflags |= PRSFAULT; trace faults in pr_fault (all but PAGE)
+ prrun.prflags |= PRSFAULT; trace faults in pr_fault (all but PAGE)
prrun.prflags |= PRCFAULT; clear current fault.
PRSTRACE and PRSFAULT can be done by other means
to proc_run_process (for use in the prrun struct by ioctl). */
/* Find procinfo for main process */
- pi = find_procinfo_or_die (PIDGET (inferior_pid), 0);
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
/* First cut: ignore pid argument */
errno = 0;
/* Running the process voids all cached registers and status. */
/* Void the threads' caches first */
- proc_iterate_over_threads (pi, invalidate_cache, NULL);
+ proc_iterate_over_threads (pi, invalidate_cache, NULL);
/* Void the process procinfo's caches. */
invalidate_cache (NULL, pi, NULL);
- if (pid != -1)
+ if (PIDGET (ptid) != -1)
{
/* Resume a specific thread, presumably suppressing the others. */
- thread = find_procinfo (PIDGET (pid), TIDGET (pid));
- if (thread == NULL)
- warning ("procfs: resume can't find thread %d -- resuming all.",
- TIDGET (pid));
- else
+ thread = find_procinfo (PIDGET (ptid), TIDGET (ptid));
+ if (thread != NULL)
{
if (thread->tid != 0)
{
proc_error (pi, "target_resume, set_async", __LINE__);
#endif
#if 0
- proc_iterate_over_threads (pi,
+ proc_iterate_over_threads (pi,
make_signal_thread_runnable,
NULL);
#endif
if (!proc_run_process (pi, step, native_signo))
{
if (errno == EBUSY)
- warning ("resume: target already running. Pretend to resume, and hope for the best!\n");
+ warning (_("resume: target already running. Pretend to resume, and hope for the best!"));
else
proc_error (pi, "target_resume", __LINE__);
}
/*
* Function: register_gdb_signals
*
- * Traverse the list of signals that GDB knows about
+ * Traverse the list of signals that GDB knows about
* (see "handle" command), and arrange for the target
* to be stopped or not, according to these settings.
*
*/
static int
-register_gdb_signals (pi, signals)
- procinfo *pi;
- sigset_t *signals;
+register_gdb_signals (procinfo *pi, gdb_sigset_t *signals)
{
int signo;
*/
static void
-procfs_notice_signals (pid)
- int pid;
+procfs_notice_signals (ptid_t ptid)
{
- sigset_t signals;
- procinfo *pi = find_procinfo_or_die (PIDGET (pid), 0);
+ gdb_sigset_t signals;
+ procinfo *pi = find_procinfo_or_die (PIDGET (ptid), 0);
if (proc_get_traced_signals (pi, &signals) &&
register_gdb_signals (pi, &signals))
*/
static void
-procfs_files_info (ignore)
- struct target_ops *ignore;
+procfs_files_info (struct target_ops *ignore)
{
- printf_filtered ("\tUsing the running image of %s %s via /proc.\n",
- attach_flag? "attached": "child",
- target_pid_to_str (inferior_pid));
+ printf_filtered (_("\tUsing the running image of %s %s via /proc.\n"),
+ attach_flag? "attached": "child",
+ target_pid_to_str (inferior_ptid));
}
/*
*/
static void
-procfs_open (args, from_tty)
- char *args;
- int from_tty;
+procfs_open (char *args, int from_tty)
{
- error ("Use the \"run\" command to start a Unix child process.");
+ error (_("Use the \"run\" command to start a Unix child process."));
}
/*
* Function: target_can_run
*
- * This tells GDB that this target vector can be invoked
+ * This tells GDB that this target vector can be invoked
* for "run" or "attach".
*/
static int
-procfs_can_run ()
+procfs_can_run (void)
{
/* 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. */
-
+
/* NOTE: possibly obsolete -- use the thread_stratum approach instead. */
return !procfs_suppress_run;
*/
static void
-procfs_stop ()
+procfs_stop (void)
{
- extern pid_t inferior_process_group;
-
kill (-inferior_process_group, SIGINT);
}
* Function: unconditionally_kill_inferior
*
* Make it die. Wait for it to die. Clean up after it.
- * Note: this should only be applied to the real process,
+ * Note: this should only be applied to the real process,
* not to an LWP, because of the check for parent-process.
* If we need this to work for an LWP, it needs some more logic.
*/
static void
-unconditionally_kill_inferior (pi)
- procinfo *pi;
+unconditionally_kill_inferior (procinfo *pi)
{
int parent_pid;
We do not check the result of the PIOCSSIG, the inferior might have
died already. */
{
- struct siginfo newsiginfo;
+ gdb_siginfo_t newsiginfo;
memset ((char *) &newsiginfo, 0, sizeof (newsiginfo));
newsiginfo.si_signo = SIGKILL;
}
#else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
if (!proc_kill (pi, SIGKILL))
- proc_warn (pi, "unconditionally_kill, proc_kill", __LINE__);
+ proc_error (pi, "unconditionally_kill, proc_kill", __LINE__);
#endif /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
destroy_procinfo (pi);
/* If pi is GDB's child, wait for it to die. */
if (parent_pid == getpid ())
- /* FIXME: should we use waitpid to make sure we get the right event?
+ /* FIXME: should we use waitpid to make sure we get the right event?
Should we check the returned event? */
{
#if 0
* Then we want GDB to forget all about it.
*/
-static void
-procfs_kill_inferior ()
+static void
+procfs_kill_inferior (void)
{
- if (inferior_pid != 0) /* ? */
+ if (!ptid_equal (inferior_ptid, null_ptid)) /* ? */
{
/* Find procinfo for main process */
- procinfo *pi = find_procinfo (PIDGET (inferior_pid), 0);
+ procinfo *pi = find_procinfo (PIDGET (inferior_ptid), 0);
if (pi)
unconditionally_kill_inferior (pi);
* Forget we ever debugged this thing!
*/
-static void
-procfs_mourn_inferior ()
+static void
+procfs_mourn_inferior (void)
{
procinfo *pi;
- if (inferior_pid != 0)
+ if (!ptid_equal (inferior_ptid, null_ptid))
{
/* Find procinfo for main process */
- pi = find_procinfo (PIDGET (inferior_pid), 0);
+ pi = find_procinfo (PIDGET (inferior_ptid), 0);
if (pi)
destroy_procinfo (pi);
}
unpush_target (&procfs_ops);
+
+ if (dbx_link_bpt != NULL)
+ {
+ deprecated_remove_raw_breakpoint (dbx_link_bpt);
+ dbx_link_bpt_addr = 0;
+ dbx_link_bpt = NULL;
+ }
+
generic_mourn_inferior ();
}
/*
* Function: init_inferior
*
- * When GDB forks to create a runnable inferior process,
+ * When GDB forks to create a runnable inferior process,
* this function is called on the parent side of the fork.
* It's job is to do whatever is necessary to make the child
* ready to be debugged, and then wait for the child to synchronize.
*/
-static void
-procfs_init_inferior (pid)
- int pid;
+static void
+procfs_init_inferior (int pid)
{
procinfo *pi;
- sigset_t signals;
+ gdb_sigset_t signals;
int fail;
/* This routine called on the parent side (GDB side)
proc_error (pi, "init_inferior, get_held_signals", __LINE__);
if (!proc_get_traced_faults (pi, &pi->saved_fltset))
proc_error (pi, "init_inferior, get_traced_faults", __LINE__);
- if (!proc_get_traced_sysentry (pi, &pi->saved_entryset))
+ if (!proc_get_traced_sysentry (pi, pi->saved_entryset))
proc_error (pi, "init_inferior, get_traced_sysentry", __LINE__);
- if (!proc_get_traced_sysexit (pi, &pi->saved_exitset))
+ if (!proc_get_traced_sysexit (pi, pi->saved_exitset))
proc_error (pi, "init_inferior, get_traced_sysexit", __LINE__);
/* Register to trace selected signals in the child. */
/* The 'process ID' we return to GDB is composed of
the actual process ID plus the lwp ID. */
- inferior_pid = MERGEPID (pi->pid, proc_get_current_thread (pi));
+ inferior_ptid = MERGEPID (pi->pid, proc_get_current_thread (pi));
-#ifdef START_INFERIOR_TRAPS_EXPECTED
+ /* Typically two, one trap to exec the shell, one to exec the
+ program being debugged. Defined by "inferior.h". */
startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
-#else
- /* One trap to exec the shell, one to exec the program being debugged. */
- startup_inferior (2);
-#endif /* START_INFERIOR_TRAPS_EXPECTED */
+
+#ifdef SYS_syssgi
+ /* On mips-irix, we need to stop the inferior early enough during
+ the startup phase in order to be able to load the shared library
+ symbols and insert the breakpoints that are located in these shared
+ libraries. Stopping at the program entry point is not good enough
+ because the -init code is executed before the execution reaches
+ that point.
+
+ So what we need to do is to insert a breakpoint in the runtime
+ loader (rld), more precisely in __dbx_link(). This procedure is
+ called by rld once all shared libraries have been mapped, but before
+ the -init code is executed. Unfortuantely, this is not straightforward,
+ as rld is not part of the executable we are running, and thus we need
+ the inferior to run until rld itself has been mapped in memory.
+
+ For this, we trace all syssgi() syscall exit events. Each time
+ we detect such an event, we iterate over each text memory maps,
+ get its associated fd, and scan the symbol table for __dbx_link().
+ When found, we know that rld has been mapped, and that we can insert
+ the breakpoint at the symbol address. Once the dbx_link() breakpoint
+ has been inserted, the syssgi() notifications are no longer necessary,
+ so they should be canceled. */
+ proc_trace_syscalls_1 (pi, SYS_syssgi, PR_SYSEXIT, FLAG_SET, 0);
+#endif
}
/*
*/
static void
-procfs_set_exec_trap ()
+procfs_set_exec_trap (void)
{
/* This routine called on the child side (inferior side)
after GDB forks the inferior. It must use only local variables,
because it may be sharing data space with its parent. */
procinfo *pi;
- sysset_t exitset;
+ sysset_t *exitset;
if ((pi = create_procinfo (getpid (), 0)) == NULL)
- perror_with_name ("procfs: create_procinfo failed in child.");
+ perror_with_name (_("procfs: create_procinfo failed in child."));
if (open_procinfo_files (pi, FD_CTL) == 0)
{
names. On the SGI, for example, there is no SYS_exec, but there
*is* a SYS_execv. So, we try to account for that. */
- premptyset (&exitset);
+ exitset = sysset_t_alloc (pi);
+ gdb_premptysysset (exitset);
#ifdef SYS_exec
- praddset (&exitset, SYS_exec);
+ gdb_praddsysset (exitset, SYS_exec);
#endif
#ifdef SYS_execve
- praddset (&exitset, SYS_execve);
+ gdb_praddsysset (exitset, SYS_execve);
#endif
#ifdef SYS_execv
- praddset (&exitset, SYS_execv);
+ gdb_praddsysset (exitset, SYS_execv);
#endif
+#ifdef DYNAMIC_SYSCALLS
+ {
+ int callnum = find_syscall (pi, "execve");
+
+ if (callnum >= 0)
+ gdb_praddsysset (exitset, callnum);
+
+ callnum = find_syscall (pi, "ra_execve");
+ if (callnum >= 0)
+ gdb_praddsysset (exitset, callnum);
+ }
+#endif /* DYNAMIC_SYSCALLS */
- if (!proc_set_traced_sysexit (pi, &exitset))
+ if (!proc_set_traced_sysexit (pi, exitset))
{
proc_warn (pi, "set_exec_trap, set_traced_sysexit", __LINE__);
gdb_flush (gdb_stderr);
if (!proc_unset_run_on_last_close (pi))
proc_warn (pi, "set_exec_trap, unset_RLC", __LINE__);
- /* FIXME: No need to destroy the procinfo --
+ /* FIXME: No need to destroy the procinfo --
we have our own address space, and we're about to do an exec! */
/*destroy_procinfo (pi);*/
}
* Function: create_inferior
*
* This function is called BEFORE gdb forks the inferior process.
- * Its only real responsibility is to set things up for the fork,
+ * Its only real responsibility is to set things up for the fork,
* and tell GDB which two functions to call after the fork (one
* for the parent, and one for the child).
- *
+ *
* This function does a complicated search for a unix shell program,
* which it then uses to parse arguments and environment variables
* to be sent to the child. I wonder whether this code could not
*/
static void
-procfs_create_inferior (exec_file, allargs, env)
- char *exec_file;
- char *allargs;
- char **env;
+procfs_create_inferior (char *exec_file, char *allargs, char **env,
+ int from_tty)
{
char *shell_file = getenv ("SHELL");
char *tryname;
/* Not found. This must be an error rather than merely passing
the file to execlp(), because execlp() would try all the
exec()s, causing GDB to get confused. */
- error ("procfs:%d -- Can't find shell %s in PATH",
+ error (_("procfs:%d -- Can't find shell %s in PATH"),
__LINE__, shell_file);
shell_file = tryname;
}
- fork_inferior (exec_file, allargs, env, procfs_set_exec_trap,
+ fork_inferior (exec_file, allargs, env, procfs_set_exec_trap,
procfs_init_inferior, NULL, shell_file);
- /* We are at the first instruction we care about. */
- /* Pedal to the metal... */
-
- proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
+#ifdef SYS_syssgi
+ /* Make sure to cancel the syssgi() syscall-exit notifications.
+ They should normally have been removed by now, but they may still
+ be activated if the inferior doesn't use shared libraries, or if
+ we didn't locate __dbx_link, or if we never stopped in __dbx_link.
+ See procfs_init_inferior() for more details. */
+ proc_trace_syscalls_1 (find_procinfo_or_die (PIDGET (inferior_ptid), 0),
+ SYS_syssgi, PR_SYSEXIT, FLAG_RESET, 0);
+#endif
}
/*
*/
static int
-procfs_notice_thread (pi, thread, ptr)
- procinfo *pi;
- procinfo *thread;
- void *ptr;
+procfs_notice_thread (procinfo *pi, procinfo *thread, void *ptr)
{
- int gdb_threadid = MERGEPID (pi->pid, thread->tid);
+ ptid_t gdb_threadid = MERGEPID (pi->pid, thread->tid);
if (!in_thread_list (gdb_threadid))
add_thread (gdb_threadid);
/*
* Function: target_find_new_threads
*
- * Query all the threads that the target knows about,
+ * Query all the threads that the target knows about,
* and give them back to GDB to add to its list.
*/
void
-procfs_find_new_threads ()
+procfs_find_new_threads (void)
{
procinfo *pi;
/* Find procinfo for main process */
- pi = find_procinfo_or_die (PIDGET (inferior_pid), 0);
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
proc_update_threads (pi);
proc_iterate_over_threads (pi, procfs_notice_thread, NULL);
}
-/*
+/*
* Function: target_thread_alive
*
* Return true if the thread is still 'alive'.
*/
static int
-procfs_thread_alive (pid)
- int pid;
+procfs_thread_alive (ptid_t ptid)
{
int proc, thread;
procinfo *pi;
- proc = PIDGET (pid);
- thread = TIDGET (pid);
+ proc = PIDGET (ptid);
+ thread = TIDGET (ptid);
/* If I don't know it, it ain't alive! */
if ((pi = find_procinfo (proc, thread)) == NULL)
return 0;
return 1;
}
-/*
- * Function: target_pid_to_str
- *
- * Return a string to be used to identify the thread in
- * the "info threads" display.
- */
+/* Convert PTID to a string. Returns the string in a static buffer. */
char *
-procfs_pid_to_str (pid)
- int pid;
+procfs_pid_to_str (ptid_t ptid)
{
static char buf[80];
- int proc, thread;
- procinfo *pi;
- proc = PIDGET (pid);
- thread = TIDGET (pid);
- pi = find_procinfo (proc, thread);
-
- if (thread == 0)
- sprintf (buf, "Process %d", proc);
+ if (TIDGET (ptid) == 0)
+ sprintf (buf, "process %d", PIDGET (ptid));
else
- sprintf (buf, "LWP %d", thread);
- return &buf[0];
+ sprintf (buf, "LWP %ld", TIDGET (ptid));
+
+ return buf;
}
/*
* Insert a watchpoint
*/
-int
-procfs_set_watchpoint (pid, addr, len, rwflag, after)
- int pid;
- CORE_ADDR addr;
- int len;
- int rwflag;
- int after;
+int
+procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag,
+ int after)
{
#ifndef UNIXWARE
+#ifndef AIX5
int pflags = 0;
- procinfo *pi;
+ procinfo *pi;
- pi = find_procinfo_or_die (pid == -1 ?
- PIDGET (inferior_pid) : PIDGET (pid), 0);
+ pi = find_procinfo_or_die (PIDGET (ptid) == -1 ?
+ PIDGET (inferior_ptid) : PIDGET (ptid), 0);
/* Translate from GDB's flags to /proc's */
if (len > 0) /* len == 0 means delete watchpoint */
return 0; /* ignore */
proc_error (pi, "set_watchpoint", __LINE__);
}
-#endif
+#endif /* AIX5 */
+#endif /* UNIXWARE */
return 0;
}
+/* Return non-zero if we can set a hardware watchpoint of type TYPE. TYPE
+ is one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint,
+ or bp_hardware_watchpoint. CNT is the number of watchpoints used so
+ far.
+
+ Note: procfs_can_use_hw_breakpoint() is not yet used by all
+ procfs.c targets due to the fact that some of them still define
+ TARGET_CAN_USE_HARDWARE_WATCHPOINT. */
+
+static int
+procfs_can_use_hw_breakpoint (int type, int cnt, int othertype)
+{
+#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS
+ return 0;
+#else
+ /* Due to the way that proc_set_watchpoint() is implemented, host
+ and target pointers must be of the same size. If they are not,
+ we can't use hardware watchpoints. This limitation is due to the
+ fact that proc_set_watchpoint() calls
+ procfs_address_to_host_pointer(); a close inspection of
+ procfs_address_to_host_pointer will reveal that an internal error
+ will be generated when the host and target pointer sizes are
+ different. */
+ if (sizeof (void *) != TYPE_LENGTH (builtin_type_void_data_ptr))
+ return 0;
+
+ /* Other tests here??? */
+
+ return 1;
+#endif
+}
+
/*
* Function: stopped_by_watchpoint
*
*/
int
-procfs_stopped_by_watchpoint (pid)
- int pid;
+procfs_stopped_by_watchpoint (ptid_t ptid)
{
procinfo *pi;
- pi = find_procinfo_or_die (pid == -1 ?
- PIDGET (inferior_pid) : PIDGET (pid), 0);
+ pi = find_procinfo_or_die (PIDGET (ptid) == -1 ?
+ PIDGET (inferior_ptid) : PIDGET (ptid), 0);
+
+ if (!pi) /* If no process, then not stopped by watchpoint! */
+ return 0;
+
if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))
{
if (proc_why (pi) == PR_FAULTED)
- {
+ {
#ifdef FLTWATCH
if (proc_what (pi) == FLTWATCH)
return 1;
#ifdef TM_I386SOL2_H
/*
- * Function: procfs_find_LDT_entry
+ * Function: procfs_find_LDT_entry
*
* Input:
- * int pid; // The GDB-style pid-plus-LWP.
+ * ptid_t ptid; // The GDB-style pid-plus-LWP.
*
* Return:
* pointer to the corresponding LDT entry.
*/
struct ssd *
-procfs_find_LDT_entry (pid)
- int pid;
+procfs_find_LDT_entry (ptid_t ptid)
{
gdb_gregset_t *gregs;
int key;
procinfo *pi;
/* Find procinfo for the lwp. */
- if ((pi = find_procinfo (PIDGET (pid), TIDGET (pid))) == NULL)
+ if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL)
{
- warning ("procfs_find_LDT_entry: could not find procinfi for %d.",
- pid);
+ warning (_("procfs_find_LDT_entry: could not find procinfo for %d:%d."),
+ PIDGET (ptid), TIDGET (ptid));
return NULL;
}
/* get its general registers. */
if ((gregs = proc_get_gregs (pi)) == NULL)
{
- warning ("procfs_find_LDT_entry: could not read gregs for %d.",
- pid);
+ warning (_("procfs_find_LDT_entry: could not read gregs for %d:%d."),
+ PIDGET (ptid), TIDGET (ptid));
return NULL;
}
/* Now extract the GS register's lower 16 bits. */
}
#endif /* TM_I386SOL2_H */
+/*
+ * Memory Mappings Functions:
+ */
+/*
+ * Function: iterate_over_mappings
+ *
+ * Call a callback function once for each mapping, passing it the mapping,
+ * an optional secondary callback function, and some optional opaque data.
+ * Quit and return the first non-zero value returned from the callback.
+ *
+ * Arguments:
+ * pi -- procinfo struct for the process to be mapped.
+ * func -- callback function to be called by this iterator.
+ * data -- optional opaque data to be passed to the callback function.
+ * child_func -- optional secondary function pointer to be passed
+ * to the child function.
+ *
+ * Return: First non-zero return value from the callback function,
+ * or zero.
+ */
+
+static int
+iterate_over_mappings (procinfo *pi, int (*child_func) (), void *data,
+ int (*func) (struct prmap *map,
+ int (*child_func) (),
+ void *data))
+{
+ char pathname[MAX_PROC_NAME_SIZE];
+ struct prmap *prmaps;
+ struct prmap *prmap;
+ int funcstat;
+ int map_fd;
+ int nmap;
+#ifdef NEW_PROC_API
+ struct stat sbuf;
+#endif
+
+ /* Get the number of mappings, allocate space,
+ and read the mappings into prmaps. */
+#ifdef NEW_PROC_API
+ /* Open map fd. */
+ sprintf (pathname, "/proc/%d/map", pi->pid);
+ if ((map_fd = open (pathname, O_RDONLY)) < 0)
+ proc_error (pi, "iterate_over_mappings (open)", __LINE__);
+
+ /* Make sure it gets closed again. */
+ make_cleanup_close (map_fd);
+
+ /* Use stat to determine the file size, and compute
+ the number of prmap_t objects it contains. */
+ if (fstat (map_fd, &sbuf) != 0)
+ proc_error (pi, "iterate_over_mappings (fstat)", __LINE__);
+
+ nmap = sbuf.st_size / sizeof (prmap_t);
+ prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
+ if (read (map_fd, (char *) prmaps, nmap * sizeof (*prmaps))
+ != (nmap * sizeof (*prmaps)))
+ proc_error (pi, "iterate_over_mappings (read)", __LINE__);
+#else
+ /* Use ioctl command PIOCNMAP to get number of mappings. */
+ if (ioctl (pi->ctl_fd, PIOCNMAP, &nmap) != 0)
+ proc_error (pi, "iterate_over_mappings (PIOCNMAP)", __LINE__);
+
+ prmaps = (struct prmap *) alloca ((nmap + 1) * sizeof (*prmaps));
+ if (ioctl (pi->ctl_fd, PIOCMAP, prmaps) != 0)
+ proc_error (pi, "iterate_over_mappings (PIOCMAP)", __LINE__);
+#endif
+
+ for (prmap = prmaps; nmap > 0; prmap++, nmap--)
+ if ((funcstat = (*func) (prmap, child_func, data)) != 0)
+ return funcstat;
+
+ return 0;
+}
+
+/*
+ * Function: solib_mappings_callback
+ *
+ * Calls the supplied callback function once for each mapped address
+ * space in the process. The callback function receives an open
+ * file descriptor for the file corresponding to that mapped
+ * address space (if there is one), and the base address of the
+ * mapped space. Quit when the callback function returns a
+ * nonzero value, or at teh end of the mappings.
+ *
+ * Returns: the first non-zero return value of the callback function,
+ * or zero.
+ */
+
+int solib_mappings_callback (struct prmap *map,
+ int (*func) (int, CORE_ADDR),
+ void *data)
+{
+ procinfo *pi = data;
+ int fd;
+
+#ifdef NEW_PROC_API
+ char name[MAX_PROC_NAME_SIZE + sizeof (map->pr_mapname)];
+
+ if (map->pr_vaddr == 0 && map->pr_size == 0)
+ return -1; /* sanity */
+
+ if (map->pr_mapname[0] == 0)
+ {
+ fd = -1; /* no map file */
+ }
+ else
+ {
+ sprintf (name, "/proc/%d/object/%s", pi->pid, map->pr_mapname);
+ /* Note: caller's responsibility to close this fd! */
+ fd = open_with_retry (name, O_RDONLY);
+ /* Note: we don't test the above call for failure;
+ we just pass the FD on as given. Sometimes there is
+ no file, so the open may return failure, but that's
+ not a problem. */
+ }
+#else
+ fd = ioctl (pi->ctl_fd, PIOCOPENM, &map->pr_vaddr);
+ /* Note: we don't test the above call for failure;
+ we just pass the FD on as given. Sometimes there is
+ no file, so the ioctl may return failure, but that's
+ not a problem. */
+#endif
+ return (*func) (fd, (CORE_ADDR) map->pr_vaddr);
+}
+
+/*
+ * Function: proc_iterate_over_mappings
+ *
+ * Uses the unified "iterate_over_mappings" function
+ * to implement the exported interface to solib-svr4.c.
+ *
+ * Given a pointer to a function, call that function once for every
+ * mapped address space in the process. The callback function
+ * receives an open file descriptor for the file corresponding to
+ * that mapped address space (if there is one), and the base address
+ * of the mapped space. Quit when the callback function returns a
+ * nonzero value, or at teh end of the mappings.
+ *
+ * Returns: the first non-zero return value of the callback function,
+ * or zero.
+ */
+
+int
+proc_iterate_over_mappings (int (*func) (int, CORE_ADDR))
+{
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+
+ return iterate_over_mappings (pi, func, pi, solib_mappings_callback);
+}
+
+/*
+ * Function: find_memory_regions_callback
+ *
+ * Implements the to_find_memory_regions method.
+ * Calls an external function for each memory region.
+ * External function will have the signiture:
+ *
+ * int callback (CORE_ADDR vaddr,
+ * unsigned long size,
+ * int read, int write, int execute,
+ * void *data);
+ *
+ * Returns the integer value returned by the callback.
+ */
+
+static int
+find_memory_regions_callback (struct prmap *map,
+ int (*func) (CORE_ADDR,
+ unsigned long,
+ int, int, int,
+ void *),
+ void *data)
+{
+ return (*func) ((CORE_ADDR) map->pr_vaddr,
+ map->pr_size,
+ (map->pr_mflags & MA_READ) != 0,
+ (map->pr_mflags & MA_WRITE) != 0,
+ (map->pr_mflags & MA_EXEC) != 0,
+ data);
+}
+
+/*
+ * Function: proc_find_memory_regions
+ *
+ * External interface. Calls a callback function once for each
+ * mapped memory region in the child process, passing as arguments
+ * CORE_ADDR virtual_address,
+ * unsigned long size,
+ * int read, TRUE if region is readable by the child
+ * int write, TRUE if region is writable by the child
+ * int execute TRUE if region is executable by the child.
+ *
+ * Stops iterating and returns the first non-zero value
+ * returned by the callback.
+ */
+
+static int
+proc_find_memory_regions (int (*func) (CORE_ADDR,
+ unsigned long,
+ int, int, int,
+ void *),
+ void *data)
+{
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+
+ return iterate_over_mappings (pi, func, data,
+ find_memory_regions_callback);
+}
+
+/* Remove the breakpoint that we inserted in __dbx_link().
+ Does nothing if the breakpoint hasn't been inserted or has already
+ been removed. */
+
+static void
+remove_dbx_link_breakpoint (void)
+{
+ if (dbx_link_bpt_addr == 0)
+ return;
+
+ if (deprecated_remove_raw_breakpoint (dbx_link_bpt) != 0)
+ warning (_("Unable to remove __dbx_link breakpoint."));
+
+ dbx_link_bpt_addr = 0;
+ dbx_link_bpt = NULL;
+}
+
+/* Return the address of the __dbx_link() function in the file
+ refernced by ABFD by scanning its symbol table. Return 0 if
+ the symbol was not found. */
+
+static CORE_ADDR
+dbx_link_addr (bfd *abfd)
+{
+ long storage_needed;
+ asymbol **symbol_table;
+ long number_of_symbols;
+ long i;
+
+ storage_needed = bfd_get_symtab_upper_bound (abfd);
+ if (storage_needed <= 0)
+ return 0;
+
+ symbol_table = (asymbol **) xmalloc (storage_needed);
+ make_cleanup (xfree, symbol_table);
+
+ number_of_symbols = bfd_canonicalize_symtab (abfd, symbol_table);
+
+ for (i = 0; i < number_of_symbols; i++)
+ {
+ asymbol *sym = symbol_table[i];
+
+ if ((sym->flags & BSF_GLOBAL)
+ && sym->name != NULL && strcmp (sym->name, "__dbx_link") == 0)
+ return (sym->value + sym->section->vma);
+ }
+
+ /* Symbol not found, return NULL. */
+ return 0;
+}
+
+/* Search the symbol table of the file referenced by FD for a symbol
+ named __dbx_link(). If found, then insert a breakpoint at this location,
+ and return nonzero. Return zero otherwise. */
+
+static int
+insert_dbx_link_bpt_in_file (int fd, CORE_ADDR ignored)
+{
+ bfd *abfd;
+ long storage_needed;
+ CORE_ADDR sym_addr;
+
+ abfd = bfd_fdopenr ("unamed", 0, fd);
+ if (abfd == NULL)
+ {
+ warning (_("Failed to create a bfd: %s."), bfd_errmsg (bfd_get_error ()));
+ return 0;
+ }
+
+ if (!bfd_check_format (abfd, bfd_object))
+ {
+ /* Not the correct format, so we can not possibly find the dbx_link
+ symbol in it. */
+ bfd_close (abfd);
+ return 0;
+ }
+
+ sym_addr = dbx_link_addr (abfd);
+ if (sym_addr != 0)
+ {
+ /* Insert the breakpoint. */
+ dbx_link_bpt_addr = sym_addr;
+ dbx_link_bpt = deprecated_insert_raw_breakpoint (sym_addr);
+ if (dbx_link_bpt == NULL)
+ {
+ warning (_("Failed to insert dbx_link breakpoint."));
+ bfd_close (abfd);
+ return 0;
+ }
+ bfd_close (abfd);
+ return 1;
+ }
+
+ bfd_close (abfd);
+ return 0;
+}
+
+/* If the given memory region MAP contains a symbol named __dbx_link,
+ insert a breakpoint at this location and return nonzero. Return
+ zero otherwise. */
+
+static int
+insert_dbx_link_bpt_in_region (struct prmap *map,
+ int (*child_func) (),
+ void *data)
+{
+ procinfo *pi = (procinfo *) data;
+
+ /* We know the symbol we're looking for is in a text region, so
+ only look for it if the region is a text one. */
+ if (map->pr_mflags & MA_EXEC)
+ return solib_mappings_callback (map, insert_dbx_link_bpt_in_file, pi);
+
+ return 0;
+}
+
+/* Search all memory regions for a symbol named __dbx_link. If found,
+ insert a breakpoint at its location, and return nonzero. Return zero
+ otherwise. */
+
+static int
+insert_dbx_link_breakpoint (procinfo *pi)
+{
+ return iterate_over_mappings (pi, NULL, pi, insert_dbx_link_bpt_in_region);
+}
+
+/*
+ * Function: mappingflags
+ *
+ * Returns an ascii representation of a memory mapping's flags.
+ */
+
+static char *
+mappingflags (long flags)
+{
+ static char asciiflags[8];
+
+ strcpy (asciiflags, "-------");
+#if defined (MA_PHYS)
+ if (flags & MA_PHYS)
+ asciiflags[0] = 'd';
+#endif
+ if (flags & MA_STACK)
+ asciiflags[1] = 's';
+ if (flags & MA_BREAK)
+ asciiflags[2] = 'b';
+ if (flags & MA_SHARED)
+ asciiflags[3] = 's';
+ if (flags & MA_READ)
+ asciiflags[4] = 'r';
+ if (flags & MA_WRITE)
+ asciiflags[5] = 'w';
+ if (flags & MA_EXEC)
+ asciiflags[6] = 'x';
+ return (asciiflags);
+}
+
+/*
+ * Function: info_mappings_callback
+ *
+ * Callback function, does the actual work for 'info proc mappings'.
+ */
+
+static int
+info_mappings_callback (struct prmap *map, int (*ignore) (), void *unused)
+{
+ char *data_fmt_string;
+
+ if (gdbarch_addr_bit (current_gdbarch) == 32)
+ data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n";
+ else
+ data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n";
+
+ printf_filtered (data_fmt_string,
+ (unsigned long) map->pr_vaddr,
+ (unsigned long) map->pr_vaddr + map->pr_size - 1,
+ map->pr_size,
+#ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */
+ (unsigned int) map->pr_offset,
+#else
+ map->pr_off,
+#endif
+ mappingflags (map->pr_mflags));
+
+ return 0;
+}
+
+/*
+ * Function: info_proc_mappings
+ *
+ * Implement the "info proc mappings" subcommand.
+ */
+
+static void
+info_proc_mappings (procinfo *pi, int summary)
+{
+ char *header_fmt_string;
+
+ if (gdbarch_ptr_bit (current_gdbarch) == 32)
+ header_fmt_string = "\t%10s %10s %10s %10s %7s\n";
+ else
+ header_fmt_string = " %18s %18s %10s %10s %7s\n";
+
+ if (summary)
+ return; /* No output for summary mode. */
+
+ printf_filtered (_("Mapped address spaces:\n\n"));
+ printf_filtered (header_fmt_string,
+ "Start Addr",
+ " End Addr",
+ " Size",
+ " Offset",
+ "Flags");
+
+ iterate_over_mappings (pi, NULL, NULL, info_mappings_callback);
+ printf_filtered ("\n");
+}
+
+/*
+ * Function: info_proc_cmd
+ *
+ * Implement the "info proc" command.
+ */
static void
-info_proc_cmd (args, from_tty)
- char *args;
- int from_tty;
+info_proc_cmd (char *args, int from_tty)
{
struct cleanup *old_chain;
- procinfo *process = NULL;
- procinfo *thread = NULL;
- char **argv = NULL;
- char *tmp = NULL;
- int pid = 0;
- int tid = 0;
+ procinfo *process = NULL;
+ procinfo *thread = NULL;
+ char **argv = NULL;
+ char *tmp = NULL;
+ int pid = 0;
+ int tid = 0;
+ int mappings = 0;
old_chain = make_cleanup (null_cleanup, 0);
if (args)
if ((argv = buildargv (args)) == NULL)
nomem (0);
else
- make_cleanup ((make_cleanup_func) freeargv, argv);
+ make_cleanup_freeargv (argv);
}
while (argv != NULL && *argv != NULL)
{
{
tid = strtoul (argv[0] + 1, NULL, 10);
}
+ else if (strncmp (argv[0], "mappings", strlen (argv[0])) == 0)
+ {
+ mappings = 1;
+ }
else
{
/* [...] */
argv++;
}
if (pid == 0)
- pid = PIDGET (inferior_pid);
+ pid = PIDGET (inferior_ptid);
if (pid == 0)
- error ("No current process: you must name one.");
+ error (_("No current process: you must name one."));
else
{
/* Have pid, will travel.
process = find_procinfo (pid, 0);
if (process == NULL)
{
- /* No. So open a procinfo for it, but
+ /* No. So open a procinfo for it, but
remember to close it again when finished. */
process = create_procinfo (pid, 0);
- make_cleanup ((make_cleanup_func) destroy_procinfo, process);
+ make_cleanup (do_destroy_procinfo_cleanup, process);
if (!open_procinfo_files (process, FD_CTL))
proc_error (process, "info proc, open_procinfo_files", __LINE__);
}
if (process)
{
- printf_filtered ("process %d flags:\n", process->pid);
+ printf_filtered (_("process %d flags:\n"), process->pid);
proc_prettyprint_flags (proc_flags (process), 1);
if (proc_flags (process) & (PR_STOPPED | PR_ISTOP))
proc_prettyprint_why (proc_why (process), proc_what (process), 1);
if (proc_get_nthreads (process) > 1)
- printf_filtered ("Process has %d threads.\n",
+ printf_filtered ("Process has %d threads.\n",
proc_get_nthreads (process));
}
if (thread)
{
- printf_filtered ("thread %d flags:\n", thread->tid);
+ printf_filtered (_("thread %d flags:\n"), thread->tid);
proc_prettyprint_flags (proc_flags (thread), 1);
if (proc_flags (thread) & (PR_STOPPED | PR_ISTOP))
proc_prettyprint_why (proc_why (thread), proc_what (thread), 1);
}
+ if (mappings)
+ {
+ info_proc_mappings (process, 0);
+ }
+
do_cleanups (old_chain);
}
+/* Modify the status of the system call identified by SYSCALLNUM in
+ the set of syscalls that are currently traced/debugged.
+
+ If ENTRY_OR_EXIT is set to PR_SYSENTRY, then the entry syscalls set
+ will be updated. Otherwise, the exit syscalls set will be updated.
+
+ If MODE is FLAG_SET, then traces will be enabled. Otherwise, they
+ will be disabled. */
+
static void
-proc_trace_syscalls (args, from_tty, entry_or_exit, mode)
- char *args;
- int from_tty;
- int entry_or_exit;
- int mode;
+proc_trace_syscalls_1 (procinfo *pi, int syscallnum, int entry_or_exit,
+ int mode, int from_tty)
{
- procinfo *pi;
sysset_t *sysset;
- int syscallnum = 0;
+
+ if (entry_or_exit == PR_SYSENTRY)
+ sysset = proc_get_traced_sysentry (pi, NULL);
+ else
+ sysset = proc_get_traced_sysexit (pi, NULL);
- if (inferior_pid <= 0)
- error ("you must be debugging a process to use this command.");
+ if (sysset == NULL)
+ proc_error (pi, "proc-trace, get_traced_sysset", __LINE__);
- if (args == NULL || args[0] == 0)
- error_no_arg ("system call to trace");
+ if (mode == FLAG_SET)
+ gdb_praddsysset (sysset, syscallnum);
+ else
+ gdb_prdelsysset (sysset, syscallnum);
- pi = find_procinfo_or_die (PIDGET (inferior_pid), 0);
- if (isdigit (args[0]))
+ if (entry_or_exit == PR_SYSENTRY)
{
- syscallnum = atoi (args);
- if (entry_or_exit == PR_SYSENTRY)
- sysset = proc_get_traced_sysentry (pi, NULL);
- else
- sysset = proc_get_traced_sysexit (pi, NULL);
+ if (!proc_set_traced_sysentry (pi, sysset))
+ proc_error (pi, "proc-trace, set_traced_sysentry", __LINE__);
+ }
+ else
+ {
+ if (!proc_set_traced_sysexit (pi, sysset))
+ proc_error (pi, "proc-trace, set_traced_sysexit", __LINE__);
+ }
+}
- if (sysset == NULL)
- proc_error (pi, "proc-trace, get_traced_sysset", __LINE__);
+static void
+proc_trace_syscalls (char *args, int from_tty, int entry_or_exit, int mode)
+{
+ procinfo *pi;
- if (mode == FLAG_SET)
- praddset (sysset, syscallnum);
- else
- prdelset (sysset, syscallnum);
+ if (PIDGET (inferior_ptid) <= 0)
+ error (_("you must be debugging a process to use this command."));
- if (entry_or_exit == PR_SYSENTRY)
- {
- if (!proc_set_traced_sysentry (pi, sysset))
- proc_error (pi, "proc-trace, set_traced_sysentry", __LINE__);
- }
- else
- {
- if (!proc_set_traced_sysexit (pi, sysset))
- proc_error (pi, "proc-trace, set_traced_sysexit", __LINE__);
- }
+ if (args == NULL || args[0] == 0)
+ error_no_arg (_("system call to trace"));
+
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ if (isdigit (args[0]))
+ {
+ const int syscallnum = atoi (args);
+
+ proc_trace_syscalls_1 (pi, syscallnum, entry_or_exit, mode, from_tty);
}
}
-static void
-proc_trace_sysentry_cmd (args, from_tty)
- char *args;
- int from_tty;
+static void
+proc_trace_sysentry_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_SET);
}
-static void
-proc_trace_sysexit_cmd (args, from_tty)
- char *args;
- int from_tty;
+static void
+proc_trace_sysexit_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_SET);
}
-static void
-proc_untrace_sysentry_cmd (args, from_tty)
- char *args;
- int from_tty;
+static void
+proc_untrace_sysentry_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_RESET);
}
-static void
-proc_untrace_sysexit_cmd (args, from_tty)
- char *args;
- int from_tty;
+static void
+proc_untrace_sysexit_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_RESET);
}
-int
-mapping_test (fd, core_addr)
- int fd;
- CORE_ADDR core_addr;
-{
- printf ("File descriptor %d, base address 0x%08x\n", fd, core_addr);
- if (fd > 0)
- close (fd);
- return 0;
-}
-
-void
-test_mapping_cmd (args, from_tty)
- char *args;
- int from_tty;
-{
- int ret;
- ret = proc_iterate_over_mappings (mapping_test);
- printf ("iterate_over_mappings returned %d.\n", ret);
-}
-
void
-_initialize_procfs ()
+_initialize_procfs (void)
{
init_procfs_ops ();
add_target (&procfs_ops);
- add_info ("proc", info_proc_cmd,
- "Show /proc process information about any running process.\
-Default is the process being debugged.");
- add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd,
- "Give a trace of entries into the syscall.");
- add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd,
- "Give a trace of exits from the syscall.");
- add_com ("proc-untrace-entry", no_class, proc_untrace_sysentry_cmd,
- "Cancel a trace of entries into the syscall.");
- add_com ("proc-untrace-exit", no_class, proc_untrace_sysexit_cmd,
- "Cancel a trace of exits from the syscall.");
-
- add_com ("test-mapping", no_class, test_mapping_cmd,
- "test iterate-over-mappings");
+ add_info ("proc", info_proc_cmd, _("\
+Show /proc process information about any running process.\n\
+Specify process id, or use the program being debugged by default.\n\
+Specify keyword 'mappings' for detailed info on memory mappings."));
+ add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd,
+ _("Give a trace of entries into the syscall."));
+ add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd,
+ _("Give a trace of exits from the syscall."));
+ add_com ("proc-untrace-entry", no_class, proc_untrace_sysentry_cmd,
+ _("Cancel a trace of entries into the syscall."));
+ add_com ("proc-untrace-exit", no_class, proc_untrace_sysexit_cmd,
+ _("Cancel a trace of exits from the syscall."));
}
/* =================== END, GDB "MODULE" =================== */
-/* miscelaneous stubs: */
+/* miscellaneous stubs: */
/* The following satisfy a few random symbols mostly created by */
/* the solaris threads implementation, which I will chase down */
/* later. */
* we will be able to find a 'live' procinfo.
*/
-int
-procfs_first_available ()
+ptid_t
+procfs_first_available (void)
{
- if (procinfo_list)
- return procinfo_list->pid;
- else
- return -1;
+ return pid_to_ptid (procinfo_list ? procinfo_list->pid : -1);
}
-int
-procfs_get_pid_fd (pid)
- int pid;
+/* =================== GCORE .NOTE "MODULE" =================== */
+#if defined (UNIXWARE) || defined (PIOCOPENLWP) || defined (PCAGENT)
+/* gcore only implemented on solaris and unixware (so far) */
+
+static char *
+procfs_do_thread_registers (bfd *obfd, ptid_t ptid,
+ char *note_data, int *note_size)
{
- procinfo *pi;
+ struct regcache *regcache = get_thread_regcache (ptid);
+ gdb_gregset_t gregs;
+ gdb_fpregset_t fpregs;
+ unsigned long merged_pid;
+
+ merged_pid = TIDGET (ptid) << 16 | PIDGET (ptid);
+
+ fill_gregset (regcache, &gregs, -1);
+#if defined (UNIXWARE)
+ note_data = (char *) elfcore_write_lwpstatus (obfd,
+ note_data,
+ note_size,
+ merged_pid,
+ stop_signal,
+ &gregs);
+#else
+ note_data = (char *) elfcore_write_prstatus (obfd,
+ note_data,
+ note_size,
+ merged_pid,
+ stop_signal,
+ &gregs);
+#endif
+ fill_fpregset (regcache, &fpregs, -1);
+ note_data = (char *) elfcore_write_prfpreg (obfd,
+ note_data,
+ note_size,
+ &fpregs,
+ sizeof (fpregs));
+ return note_data;
+}
- if (pid == -1 && inferior_pid != 0)
- pi = find_procinfo (PIDGET (inferior_pid), 0);
- else
- pi = find_procinfo (PIDGET (pid), 0);
+struct procfs_corefile_thread_data {
+ bfd *obfd;
+ char *note_data;
+ int *note_size;
+};
- if (pi)
- return pi->ctl_fd;
+static int
+procfs_corefile_thread_callback (procinfo *pi, procinfo *thread, void *data)
+{
+ struct procfs_corefile_thread_data *args = data;
+
+ if (pi != NULL && thread->tid != 0)
+ {
+ ptid_t saved_ptid = inferior_ptid;
+ inferior_ptid = MERGEPID (pi->pid, thread->tid);
+ args->note_data = procfs_do_thread_registers (args->obfd, inferior_ptid,
+ args->note_data,
+ args->note_size);
+ inferior_ptid = saved_ptid;
+ }
+ return 0;
+}
+
+static char *
+procfs_make_note_section (bfd *obfd, int *note_size)
+{
+ struct cleanup *old_chain;
+ gdb_gregset_t gregs;
+ gdb_fpregset_t fpregs;
+ char fname[16] = {'\0'};
+ char psargs[80] = {'\0'};
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ char *note_data = NULL;
+ char *inf_args;
+ struct procfs_corefile_thread_data thread_args;
+ char *auxv;
+ int auxv_len;
+
+ if (get_exec_file (0))
+ {
+ strncpy (fname, strrchr (get_exec_file (0), '/') + 1, sizeof (fname));
+ strncpy (psargs, get_exec_file (0),
+ sizeof (psargs));
+
+ inf_args = get_inferior_args ();
+ if (inf_args && *inf_args &&
+ strlen (inf_args) < ((int) sizeof (psargs) - (int) strlen (psargs)))
+ {
+ strncat (psargs, " ",
+ sizeof (psargs) - strlen (psargs));
+ strncat (psargs, inf_args,
+ sizeof (psargs) - strlen (psargs));
+ }
+ }
+
+ note_data = (char *) elfcore_write_prpsinfo (obfd,
+ note_data,
+ note_size,
+ fname,
+ psargs);
+
+#ifdef UNIXWARE
+ fill_gregset (get_current_regcache (), &gregs, -1);
+ note_data = elfcore_write_pstatus (obfd, note_data, note_size,
+ PIDGET (inferior_ptid),
+ stop_signal, &gregs);
+#endif
+
+ thread_args.obfd = obfd;
+ thread_args.note_data = note_data;
+ thread_args.note_size = note_size;
+ proc_iterate_over_threads (pi, procfs_corefile_thread_callback, &thread_args);
+
+ if (thread_args.note_data == note_data)
+ {
+ /* iterate_over_threads didn't come up with any threads;
+ just use inferior_ptid. */
+ note_data = procfs_do_thread_registers (obfd, inferior_ptid,
+ note_data, note_size);
+ }
else
- return -1;
+ {
+ note_data = thread_args.note_data;
+ }
+
+ auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV,
+ NULL, &auxv);
+ if (auxv_len > 0)
+ {
+ note_data = elfcore_write_note (obfd, note_data, note_size,
+ "CORE", NT_AUXV, auxv, auxv_len);
+ xfree (auxv);
+ }
+
+ make_cleanup (xfree, note_data);
+ return note_data;
+}
+#else /* !(Solaris or Unixware) */
+static char *
+procfs_make_note_section (bfd *obfd, int *note_size)
+{
+ error (_("gcore not implemented for this host."));
+ return NULL; /* lint */
}
+#endif /* Solaris or Unixware */
+/* =================== END GCORE .NOTE "MODULE" =================== */
projects / thirdparty / binutils-gdb.git / blobdiff