/* Machine independent support for SVR4 /proc (process file system) for GDB.
- Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation,
- Inc.
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2006, 2007, 2008, 2009, 2010,
+ 2011 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 "elf-bfd.h" /* for elfcore_write_* */
#include "gdbcmd.h"
#include "gdbthread.h"
+#include "regcache.h"
+#include "inf-child.h"
#if defined (NEW_PROC_API)
-#define _STRUCTURED_PROC 1 /* Should be done by configure script. */
+#define _STRUCTURED_PROC 1 /* Should be done by configure script. */
#endif
#include <sys/procfs.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 "procfs.h"
+#include "observer.h"
-/*
- * PROCFS.C
- *
- * This module provides the interface between GDB and the
- * /proc file system, which is used on many versions of Unix
- * as a means for debuggers to control other processes.
- * Examples of the systems that use this interface are:
- * Irix
- * Solaris
- * OSF
- * Unixware
- * AIX5
- *
- * /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.
- *
- * The most important thing to know about /proc and this module
- * is that there are two very different interfaces to /proc:
- * One that uses the ioctl system call, and
- * another that uses read and write system calls.
- * 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
- * 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
- * this interface layer.
- */
-
-
-/* Determine which /proc API we are using:
- The ioctl API defines PIOCSTATUS, while
- the read/write (multiple fd) API never does. */
+/* This module provides the interface between GDB and the
+ /proc file system, which is used on many versions of Unix
+ as a means for debuggers to control other processes.
+
+ Examples of the systems that use this interface are:
+
+ Irix
+ Solaris
+ OSF
+ Unixware
+ AIX5
+
+ /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.
+
+ The most important thing to know about /proc and this module is
+ that there are two very different interfaces to /proc:
+
+ One that uses the ioctl system call, and another that uses read
+ and write system calls.
+
+ 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 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 this interface
+ layer. */
+
+/* Determine which /proc API we are using: The ioctl API defines
+ PIOCSTATUS, while the read/write (multiple fd) API never does. */
#ifdef NEW_PROC_API
#include <sys/types.h>
#include "proc-utils.h"
-/* Prototypes for supply_gregset etc. */
+/* Prototypes for supply_gregset etc. */
#include "gregset.h"
/* =================== TARGET_OPS "MODULE" =================== */
-/*
- * This module defines the GDB target vector and its methods.
- */
+/* This module defines the GDB target vector and its methods. */
-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_attach (struct target_ops *, char *, int);
+static void procfs_detach (struct target_ops *, char *, int);
+static void procfs_resume (struct target_ops *,
+ ptid_t, int, enum target_signal);
+static void procfs_stop (ptid_t);
static void procfs_files_info (struct target_ops *);
-static void procfs_fetch_registers (int);
-static void procfs_store_registers (int);
-static void procfs_notice_signals (ptid_t);
-static void procfs_prepare_to_store (void);
-static void procfs_kill_inferior (void);
-static void procfs_mourn_inferior (void);
-static void procfs_create_inferior (char *, char *, char **);
-static ptid_t procfs_wait (ptid_t, struct target_waitstatus *);
-static int procfs_xfer_memory (CORE_ADDR, char *, int, int,
+static void procfs_fetch_registers (struct target_ops *,
+ struct regcache *, int);
+static void procfs_store_registers (struct target_ops *,
+ struct regcache *, int);
+static void procfs_pass_signals (ptid_t, int, unsigned char *);
+static void procfs_kill_inferior (struct target_ops *ops);
+static void procfs_mourn_inferior (struct target_ops *ops);
+static void procfs_create_inferior (struct target_ops *, char *,
+ char *, char **, int);
+static ptid_t procfs_wait (struct target_ops *,
+ ptid_t, struct target_waitstatus *, int);
+static int procfs_xfer_memory (CORE_ADDR, gdb_byte *, int, int,
struct mem_attrib *attrib,
struct target_ops *);
-
-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 *),
+static LONGEST procfs_xfer_partial (struct target_ops *ops,
+ enum target_object object,
+ const char *annex,
+ gdb_byte *readbuf,
+ const gdb_byte *writebuf,
+ ULONGEST offset, LONGEST len);
+
+static int procfs_thread_alive (struct target_ops *ops, ptid_t);
+
+void procfs_find_new_threads (struct target_ops *ops);
+char *procfs_pid_to_str (struct target_ops *, 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 */
+#if defined (PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
+/* When GDB is built as 64-bit application on Solaris, the auxv data
+ is presented in 64-bit format. We need to provide a custom parser
+ to handle that. */
+static int
+procfs_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
+ gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
+ gdb_byte *ptr = *readptr;
+
+ if (endptr == ptr)
+ return 0;
-static void
-init_procfs_ops (void)
+ if (endptr - ptr < 8 * 2)
+ return -1;
+
+ *typep = extract_unsigned_integer (ptr, 4, byte_order);
+ ptr += 8;
+ /* The size of data is always 64-bit. If the application is 32-bit,
+ it will be zero extended, as expected. */
+ *valp = extract_unsigned_integer (ptr, 8, byte_order);
+ ptr += 8;
+
+ *readptr = ptr;
+ return 1;
+}
+#endif
+
+struct target_ops *
+procfs_target (void)
{
- procfs_ops.to_shortname = "procfs";
- procfs_ops.to_longname = "Unix /proc child process";
- procfs_ops.to_doc =
+ struct target_ops *t = inf_child_target ();
+
+ t->to_shortname = "procfs";
+ t->to_longname = "Unix /proc child process";
+ t->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_terminal_ours_for_output = terminal_ours_for_output;
- 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;
+ t->to_create_inferior = procfs_create_inferior;
+ t->to_kill = procfs_kill_inferior;
+ t->to_mourn_inferior = procfs_mourn_inferior;
+ t->to_attach = procfs_attach;
+ t->to_detach = procfs_detach;
+ t->to_wait = procfs_wait;
+ t->to_resume = procfs_resume;
+ t->to_fetch_registers = procfs_fetch_registers;
+ t->to_store_registers = procfs_store_registers;
+ t->to_xfer_partial = procfs_xfer_partial;
+ t->deprecated_xfer_memory = procfs_xfer_memory;
+ t->to_pass_signals = procfs_pass_signals;
+ t->to_files_info = procfs_files_info;
+ t->to_stop = procfs_stop;
+
+ t->to_find_new_threads = procfs_find_new_threads;
+ t->to_thread_alive = procfs_thread_alive;
+ t->to_pid_to_str = procfs_pid_to_str;
+
+ t->to_has_thread_control = tc_schedlock;
+ t->to_find_memory_regions = proc_find_memory_regions;
+ t->to_make_corefile_notes = procfs_make_note_section;
+
+#if defined(PR_MODEL_NATIVE) && (PR_MODEL_NATIVE == PR_MODEL_LP64)
+ t->to_auxv_parse = procfs_auxv_parse;
+#endif
+
+ t->to_magic = OPS_MAGIC;
+
+ return t;
}
/* =================== END, TARGET_OPS "MODULE" =================== */
-/*
- * World Unification:
- *
- * Put any typedefs, defines etc. here that are required for
- * the unification of code that handles different versions of /proc.
- */
+/* World Unification:
+
+ Put any typedefs, defines etc. here that are required for the
+ unification of code that handles different versions of /proc. */
#ifdef NEW_PROC_API /* Solaris 7 && 8 method for watchpoints */
#ifdef WA_READ
- enum { READ_WATCHFLAG = 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 */
typedef struct siginfo gdb_siginfo_t;
#endif
+/* On mips-irix, praddset and prdelset are defined in such a way that
+ they return a value, which causes GCC to emit a -Wunused error
+ because the returned value is not used. Prevent this warning
+ by casting the return value to void. On sparc-solaris, this issue
+ does not exist because the definition of these macros already include
+ that cast to void. */
+#define gdb_praddset(sp, flag) ((void) praddset (sp, flag))
+#define gdb_prdelset(sp, flag) ((void) prdelset (sp, flag))
+
/* gdb_premptysysset */
#ifdef premptysysset
#define gdb_premptysysset premptysysset
#ifdef praddsysset
#define gdb_praddsysset praddsysset
#else
-#define gdb_praddsysset praddset
+#define gdb_praddsysset gdb_praddset
#endif
/* prdelsysset */
#ifdef prdelsysset
#define gdb_prdelsysset prdelsysset
#else
-#define gdb_prdelsysset prdelset
+#define gdb_prdelsysset gdb_prdelset
#endif
/* prissyssetmember */
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.
-*/
+ (in theory) have different syscall numbers. */
#ifdef HAVE_PRSYSENT_T
#define DYNAMIC_SYSCALLS
#endif
There will be a separate procinfo structure for use by the (not yet
implemented) "info proc" command, so that we can print useful
information about any random process without interfering with the
- inferior's procinfo information. */
+ inferior's procinfo information. */
#ifdef NEW_PROC_API
/* format strings for /proc paths */
# define STATUS_PROC_NAME_FMT "/proc/%05d"
# define MAX_PROC_NAME_SIZE sizeof("/proc/ttttppppp")
# endif
-/* the name of the proc status struct depends on the implementation */
+/* The name of the proc status struct depends on the implementation. */
typedef prstatus_t gdb_prstatus_t;
typedef prstatus_t gdb_lwpstatus_t;
#endif /* NEW_PROC_API */
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). */
int ctl_fd; /* File descriptor for /proc control file */
- /*
- * 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
- * them uniformly by (in the case of the ioctl single-file-descriptor
- * implementation) filling them with copies of the control fd.
- */
+
+ /* 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 them uniformly by (in the case of the ioctl
+ single-file-descriptor implementation) filling them with copies
+ of the control fd. */
int status_fd; /* File descriptor for /proc status file */
int as_fd; /* File descriptor for /proc as file */
int num_syscalls; /* Total number of syscalls */
char **syscall_names; /* Syscall number to name map */
#endif
-
+
struct procinfo *thread_list;
int status_valid : 1;
static int find_syscall (procinfo *pi, char *name);
#endif /* DYNAMIC_SYSCALLS */
+static int iterate_over_mappings
+ (procinfo *pi, find_memory_region_ftype child_func, void *data,
+ int (*func) (struct prmap *map, find_memory_region_ftype child_func,
+ void *data));
+
/* The head of the procinfo list: */
static procinfo * procinfo_list;
-/*
- * Function: find_procinfo
- *
- * Search the procinfo list.
- *
- * Returns: pointer to procinfo, or NULL if not found.
- */
+/* Search the procinfo list. Return a pointer to procinfo, or NULL if
+ not found. */
-static procinfo *
+static procinfo *
find_procinfo (int pid, int tid)
{
procinfo *pi;
here. This means that in general it is the caller's
responsibility to check threads_valid and update before
calling find_procinfo, if the caller wants to find a new
- thread. */
+ thread. */
for (pi = pi->thread_list; pi; pi = pi->next)
if (pi->tid == tid)
return pi;
}
-/*
- * Function: find_procinfo_or_die
- *
- * Calls find_procinfo, but errors on failure.
- */
+/* Calls find_procinfo, but errors on failure. */
static procinfo *
find_procinfo_or_die (int pid, int 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. */
-
+/* 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, 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)
{
return status;
}
-/*
- * Function: open_procinfo_files
- *
- * Open the file descriptor for the process or LWP.
- * ifdef NEW_PROC_API, we only open the control file descriptor;
- * the others are opened lazily as needed.
- * else (if not NEW_PROC_API), there is only one real
- * file descriptor, but we keep multiple copies of it so that
- * the code that uses them does not have to be #ifdef'd.
- *
- * Return: file descriptor, or zero for failure.
- */
+/* Open the file descriptor for the process or LWP. If NEW_PROC_API
+ is defined, we only open the control file descriptor; the others
+ are opened lazily as needed. Otherwise (if not NEW_PROC_API),
+ there is only one real file descriptor, but we keep multiple copies
+ of it so that the code that uses them does not have to be #ifdef'd.
+ Returns the file descriptor, or zero for failure. */
enum { FD_CTL, FD_STATUS, FD_AS };
#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
- * 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
- * different from those of a first-class process:
- * Pathnames for a process (<proc-id>):
- * /proc/<proc-id>/ctl
- * /proc/<proc-id>/status
- * /proc/<proc-id>/as
- * /proc/<proc-id>/map
- * Pathnames for an LWP (lwp-id):
- * /proc/<proc-id>/lwp/<lwp-id>/lwpctl
- * /proc/<proc-id>/lwp/<lwp-id>/lwpstatus
- * An LWP has no map or address space file descriptor, since
- * the memory map and address space are shared by all LWPs.
- *
- * Everyone else (Solaris 2.5, Irix, OSF)
- * There is only one file descriptor for each process or LWP.
- * 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.
- * Pathname for all:
- * /proc/<proc-id>
- *
- * Solaris 2.5 LWP's:
- * 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.
- *
- * OSF threads:
- * These do not even have their own independent file descriptor.
- * All operations are carried out on the file descriptor of the
- * parent process. Therefore we just call open again for each
- * thread, getting a new handle for the same 'file'.
- */
+ /* 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
+ 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
+ different from those of a first-class process:
+ Pathnames for a process (<proc-id>):
+ /proc/<proc-id>/ctl
+ /proc/<proc-id>/status
+ /proc/<proc-id>/as
+ /proc/<proc-id>/map
+ Pathnames for an LWP (lwp-id):
+ /proc/<proc-id>/lwp/<lwp-id>/lwpctl
+ /proc/<proc-id>/lwp/<lwp-id>/lwpstatus
+ An LWP has no map or address space file descriptor, since
+ the memory map and address space are shared by all LWPs.
+
+ Everyone else (Solaris 2.5, Irix, OSF)
+ There is only one file descriptor for each process or LWP.
+ 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.
+ Pathname for all:
+ /proc/<proc-id>
+
+ Solaris 2.5 LWP's:
+ 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.
+
+ OSF threads:
+ These do not even have their own independent file descriptor.
+ All operations are carried out on the file descriptor of the
+ parent process. Therefore we just call open again for each
+ thread, getting a new handle for the same 'file'. */
#ifdef NEW_PROC_API
- /*
- * In this case, there are several different file descriptors that
- * we might be asked to open. The control file descriptor will be
- * opened early, but the others will be opened lazily as they are
- * needed.
- */
+ /* In this case, there are several different file descriptors that
+ we might be asked to open. The control file descriptor will be
+ opened early, but the others will be opened lazily as they are
+ needed. */
strcpy (tmp, pi->pathname);
- switch (which) { /* which file descriptor to open? */
+ switch (which) { /* Which file descriptor to open? */
case FD_CTL:
if (pi->tid)
strcat (tmp, "/lwpctl");
break;
case FD_AS:
if (pi->tid)
- return 0; /* there is no 'as' file descriptor for an lwp */
+ return 0; /* There is no 'as' file descriptor for an lwp. */
strcat (tmp, "/as");
fd = open_with_retry (tmp, O_RDWR);
if (fd <= 0)
return 0; /* unknown file descriptor */
}
#else /* not NEW_PROC_API */
- /*
- * 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.
- *
- * For convenience, we copy each procinfo's single file descriptor
- * 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.
- */
+ /* 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.
+
+ For convenience, we copy each procinfo's single file descriptor
+ 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 */
- /* 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? */
+#else /* Sol 2.5, Irix, other? */
if (pi->tid == 0) /* Master procinfo for the process */
{
fd = open_with_retry (pi->pathname, O_RDWR);
procinfo *process;
int lwpid = pi->tid;
- /* Find the procinfo for the entire process. */
+ /* Find the procinfo for the entire process. */
if ((process = find_procinfo (pi->pid, 0)) == NULL)
return 0; /* fail */
- /* Now obtain the file descriptor for the LWP. */
+ /* Now obtain the file descriptor for the LWP. */
if ((fd = ioctl (process->ctl_fd, PIOCOPENLWP, &lwpid)) <= 0)
return 0; /* fail */
-#else /* Irix, other? */
- return 0; /* Don't know how to open threads */
+#else /* Irix, other? */
+ return 0; /* Don't know how to open threads. */
#endif /* Sol 2.5 PIOCOPENLWP */
}
#endif /* OSF PIOCTSTATUS */
return 1; /* success */
}
-/*
- * Function: create_procinfo
- *
- * Allocate a data structure and link it into the procinfo list.
- * (First tries to find a pre-existing one (FIXME: why?)
- *
- * Return: pointer to new procinfo struct.
- */
+/* Allocate a data structure and link it into the procinfo list.
+ First tries to find a pre-existing one (FIXME: why?). Returns the
+ pointer to new procinfo struct. */
static procinfo *
create_procinfo (int pid, int tid)
{
- procinfo *pi, *parent;
+ procinfo *pi, *parent = NULL;
if ((pi = find_procinfo (pid, tid)))
- return pi; /* Already exists, nothing to do. */
+ return pi; /* Already exists, nothing to do. */
- /* find parent before doing malloc, to save having to cleanup */
+ /* Find parent before doing malloc, to save having to cleanup. */
if (tid != 0)
parent = find_procinfo_or_die (pid, 0); /* FIXME: should I
create it if it
- doesn't exist yet? */
+ doesn't exist yet? */
pi = (procinfo *) xmalloc (sizeof (procinfo));
memset (pi, 0, sizeof (procinfo));
return pi;
}
-/*
- * Function: close_procinfo_files
- *
- * Close all file descriptors associated with the procinfo
- */
+/* Close all file descriptors associated with the procinfo. */
static void
close_procinfo_files (procinfo *pi)
pi->ctl_fd = pi->as_fd = pi->status_fd = 0;
}
-/*
- * Function: destroy_procinfo
- *
- * Destructor function. Close, unlink and deallocate the object.
- */
+/* Destructor function. Close, unlink and deallocate the object. */
static void
destroy_one_procinfo (procinfo **list, procinfo *pi)
{
procinfo *ptr;
- /* Step one: unlink the procinfo from its list */
+ /* 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)
{
break;
}
- /* Step two: close any open file descriptors */
+ /* Step two: close any open file descriptors. */
close_procinfo_files (pi);
- /* Step three: free the memory. */
+ /* Step three: free the memory. */
#ifdef DYNAMIC_SYSCALLS
free_syscalls (pi);
#endif
{
procinfo *tmp;
- if (pi->tid != 0) /* destroy a thread procinfo */
+ if (pi->tid != 0) /* Destroy a thread procinfo. */
{
- tmp = find_procinfo (pi->pid, 0); /* find the parent process */
+ tmp = find_procinfo (pi->pid, 0); /* Find the parent process. */
destroy_one_procinfo (&tmp->thread_list, pi);
}
- else /* destroy a process procinfo and all its threads */
+ else /* Destroy a process procinfo and all its threads. */
{
/* First destroy the children, if any; */
while (pi->thread_list != NULL)
enum { NOKILL, KILL };
-/*
- * Function: dead_procinfo
- *
- * To be called on a non_recoverable error for a procinfo.
- * Prints error messages, optionally sends a SIGKILL to the process,
- * then destroys the data structure.
- */
+/* To be called on a non_recoverable error for a procinfo. Prints
+ error messages, optionally sends a SIGKILL to the process, then
+ destroys the data structure. */
static void
dead_procinfo (procinfo *pi, char *msg, int kill_p)
kill (pi->pid, SIGKILL);
destroy_procinfo (pi);
- error (msg);
+ error ("%s", 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.
- */
+/* Returns the (complete) size of a sysset_t struct. Normally, this
+ is just sizeof (sysset_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)
#endif
}
-/* Function: sysset_t_alloc
-
- Allocate and (partially) initialize a sysset_t struct. */
+/* 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));
+ 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
+/* 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.) */
+ names for these numbers will be left as NULL.) */
#define MAX_SYSCALL_NAME_LENGTH 256
#define MAX_SYSCALLS 65536
pi->num_syscalls = 0;
pi->syscall_names = 0;
- /* Open the file descriptor for the sysent file */
+ /* 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);
+ 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);
+ 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);
+ error (_("load_syscalls: /proc/%d/sysent contains no syscalls!"),
+ pi->pid);
}
size = header.pr_nsyscalls * sizeof (prsyscall_t);
if (read (sysent_fd, syscalls, size) != size)
{
xfree (syscalls);
- error ("load_syscalls: Error reading /proc/%d/sysent", pi->pid);
+ error (_("load_syscalls: Error reading /proc/%d/sysent"), pi->pid);
}
/* Find maximum syscall number. This may not be the same as
pr_nsyscalls since that value refers to the number of entries
in the table. (Also, the docs indicate that some system
- call numbers may be skipped.) */
+ 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_nameoff > 0
&& syscalls[i].pr_number < MAX_SYSCALLS)
maxcall = syscalls[i].pr_number;
for (i = 0; i < pi->num_syscalls; i++)
pi->syscall_names[i] = NULL;
- /* Read the syscall names in */
+ /* Read the syscall names in. */
for (i = 0; i < header.pr_nsyscalls; i++)
{
char namebuf[MAX_SYSCALL_NAME_LENGTH];
int callnum;
if (syscalls[i].pr_number >= MAX_SYSCALLS
- || syscalls[i].pr_number < 0
+ || 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))
+ != (off_t) syscalls[i].pr_nameoff))
continue;
nread = read (sysent_fd, namebuf, sizeof namebuf);
if (pi->syscall_names[callnum] != NULL)
{
- /* FIXME: Generate warning */
+ /* FIXME: Generate warning. */
continue;
}
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
+/* Free the space allocated for the syscall names from the procinfo
structure. */
static void
}
}
-/* Function: find_syscall
-
- Given a name, look up (and return) the corresponding syscall number.
+/* 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)
/* =================== /proc "MODULE" =================== */
-/*
- * This "module" is the interface layer between the /proc system API
- * 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.
- *
- * The main motivation for this layer is to hide the fact that
- * there are two very different implementations of the /proc API.
- * Rather than have a bunch of #ifdefs all thru the gdb target vector
- * functions, we do our best to hide them all in here.
- */
+/* This "module" is the interface layer between the /proc system API
+ 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.
+
+ The main motivation for this layer is to hide the fact that there
+ are two very different implementations of the /proc API. Rather
+ than have a bunch of #ifdefs all thru the gdb target vector
+ functions, we do our best to hide them all in here. */
int proc_get_status (procinfo * pi);
long proc_flags (procinfo * pi);
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);
+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);
perror_with_name (errmsg);
}
-/*
- * Function: proc_get_status
- *
- * Updates the status struct in the procinfo.
- * There is a 'valid' flag, to let other functions know when
- * this function needs to be called (so the status is only
- * read when it is needed). The status file descriptor is
- * also only opened when it is needed.
- *
- * Return: non-zero for success, zero for failure.
- */
+/* Updates the status struct in the procinfo. There is a 'valid'
+ flag, to let other functions know when this function needs to be
+ called (so the status is only read when it is needed). The status
+ file descriptor is also only opened when it is needed. Returns
+ non-zero for success, zero for failure. */
int
proc_get_status (procinfo *pi)
{
- /* Status file descriptor is opened "lazily" */
+ /* Status file descriptor is opened "lazily". */
if (pi->status_fd == 0 &&
open_procinfo_files (pi, FD_STATUS) == 0)
{
pi->status_valid = 0; /* fail */
else
{
- /* Sigh... I have to read a different data structure,
- depending on whether this is a main process or an LWP. */
+ /* 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));
if (pi->status_valid &&
(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,
+ /* Unixware peculiarity -- read the damn thing again! */
+ pi->status_valid = (read (pi->status_fd,
(char *) &pi->prstatus,
sizeof (gdb_prstatus_t))
== sizeof (gdb_prstatus_t));
#ifdef PIOCTSTATUS /* osf */
if (pi->tid == 0) /* main process */
{
- /* Just read the danged status. Now isn't that simple? */
- pi->status_valid =
+ /* Just read the danged status. Now isn't that simple? */
+ 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;
}
}
#else
- /* Just read the danged status. Now isn't that simple? */
+ /* Just read the danged status. Now isn't that simple? */
pi->status_valid = (ioctl (pi->status_fd, PIOCSTATUS, &pi->prstatus) >= 0);
#endif
#endif
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 */
+ /* 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,
- the status struct includes the fp regs too, so mark them valid too */
+ /* 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
- return pi->status_valid; /* True if success, false if failure. */
+ return pi->status_valid; /* True if success, false if failure. */
}
-/*
- * Function: proc_flags
- *
- * returns the process flags (pr_flags field).
- */
+/* Returns the process flags (pr_flags field). */
long
proc_flags (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
- return 0; /* FIXME: not a good failure value (but what is?) */
+ return 0; /* FIXME: not a good failure value (but what is?) */
#ifdef NEW_PROC_API
# ifdef UNIXWARE
/* UnixWare 7.1 puts process status flags, e.g. PR_ASYNC, in
pstatus_t and LWP status flags, e.g. PR_STOPPED, in lwpstatus_t.
- The two sets of flags don't overlap. */
+ The two sets of flags don't overlap. */
return pi->prstatus.pr_flags | pi->prstatus.pr_lwp.pr_flags;
# else
return pi->prstatus.pr_lwp.pr_flags;
#endif
}
-/*
- * Function: proc_why
- *
- * returns the pr_why field (why the process stopped).
- */
+/* Returns the pr_why field (why the process stopped). */
int
proc_why (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
- return 0; /* FIXME: not a good failure value (but what is?) */
+ return 0; /* FIXME: not a good failure value (but what is?) */
#ifdef NEW_PROC_API
return pi->prstatus.pr_lwp.pr_why;
#endif
}
-/*
- * Function: proc_what
- *
- * returns the pr_what field (details of why the process stopped).
- */
+/* Returns the pr_what field (details of why the process stopped). */
int
proc_what (procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
- return 0; /* FIXME: not a good failure value (but what is?) */
+ return 0; /* FIXME: not a good failure value (but what is?) */
#ifdef NEW_PROC_API
return pi->prstatus.pr_lwp.pr_what;
#endif
}
+/* This function is only called when PI is stopped by a watchpoint.
+ Assuming the OS supports it, write to *ADDR the data address which
+ triggered it and return 1. Return 0 if it is not possible to know
+ the address. */
+
+static int
+proc_watchpoint_address (procinfo *pi, CORE_ADDR *addr)
+{
+ if (!pi->status_valid)
+ if (!proc_get_status (pi))
+ return 0;
+
+#ifdef NEW_PROC_API
+ *addr = (CORE_ADDR) gdbarch_pointer_to_address (target_gdbarch,
+ builtin_type (target_gdbarch)->builtin_data_ptr,
+ (gdb_byte *) &pi->prstatus.pr_lwp.pr_info.si_addr);
+#else
+ *addr = (CORE_ADDR) gdbarch_pointer_to_address (target_gdbarch,
+ builtin_type (target_gdbarch)->builtin_data_ptr,
+ (gdb_byte *) &pi->prstatus.pr_info.si_addr);
+#endif
+ return 1;
+}
+
#ifndef PIOCSSPCACT /* The following is not supported on OSF. */
-/*
- * Function: proc_nsysarg
- *
- * returns the pr_nsysarg field (number of args to the current syscall).
- */
+
+/* Returns the pr_nsysarg field (number of args to the current
+ syscall). */
int
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
#endif
}
-/*
- * Function: proc_sysargs
- *
- * returns the pr_sysarg field (pointer to the arguments of current syscall).
- */
+/* Returns the pr_sysarg field (pointer to the arguments of current
+ syscall). */
long *
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
#endif
}
-/*
- * Function: proc_syscall
- *
- * returns the pr_syscall field (id of current syscall if we are in one).
- */
+/* Returns the pr_syscall field (id of current syscall if we are in
+ one). */
int
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
}
#endif /* PIOCSSPCACT */
-/*
- * Function: proc_cursig:
- *
- * returns the pr_cursig field (current signal).
- */
+/* Returns the pr_cursig field (current signal). */
long
proc_cursig (struct procinfo *pi)
{
if (!pi->status_valid)
if (!proc_get_status (pi))
- return 0; /* FIXME: not a good failure value (but what is?) */
+ return 0; /* FIXME: not a good failure value (but what is?) */
#ifdef NEW_PROC_API
return pi->prstatus.pr_lwp.pr_cursig;
#endif
}
-/*
- * Function: proc_modify_flag
- *
- * === I appologize for the messiness of this function.
- * === This is an area where the different versions of
- * === /proc are more inconsistent than usual. MVS
- *
- * Set or reset any of the following process flags:
- * PR_FORK -- forked child will inherit trace flags
- * PR_RLC -- traced process runs when last /proc file closed.
- * PR_KLC -- traced process is killed when last /proc file closed.
- * PR_ASYNC -- LWP's get to run/stop independently.
- *
- * There are three methods for doing this function:
- * 1) Newest: read/write [PCSET/PCRESET/PCUNSET]
- * [Sol6, Sol7, UW]
- * 2) Middle: PIOCSET/PIOCRESET
- * [Irix, Sol5]
- * 3) Oldest: PIOCSFORK/PIOCRFORK/PIOCSRLC/PIOCRRLC
- * [OSF, Sol5]
- *
- * Note: Irix does not define PR_ASYNC.
- * Note: OSF does not define PR_KLC.
- * Note: OSF is the only one that can ONLY use the oldest method.
- *
- * Arguments:
- * pi -- the procinfo
- * flag -- one of PR_FORK, PR_RLC, or PR_ASYNC
- * mode -- 1 for set, 0 for reset.
- *
- * Returns non-zero for success, zero for failure.
- */
+/* === I appologize for the messiness of this function.
+ === This is an area where the different versions of
+ === /proc are more inconsistent than usual.
+
+ Set or reset any of the following process flags:
+ PR_FORK -- forked child will inherit trace flags
+ PR_RLC -- traced process runs when last /proc file closed.
+ PR_KLC -- traced process is killed when last /proc file closed.
+ PR_ASYNC -- LWP's get to run/stop independently.
+
+ There are three methods for doing this function:
+ 1) Newest: read/write [PCSET/PCRESET/PCUNSET]
+ [Sol6, Sol7, UW]
+ 2) Middle: PIOCSET/PIOCRESET
+ [Irix, Sol5]
+ 3) Oldest: PIOCSFORK/PIOCRFORK/PIOCSRLC/PIOCRRLC
+ [OSF, Sol5]
+
+ Note: Irix does not define PR_ASYNC.
+ Note: OSF does not define PR_KLC.
+ Note: OSF is the only one that can ONLY use the oldest method.
+
+ Arguments:
+ pi -- the procinfo
+ flag -- one of PR_FORK, PR_RLC, or PR_ASYNC
+ mode -- 1 for set, 0 for reset.
+
+ Returns non-zero for success, zero for failure. */
enum { FLAG_RESET, FLAG_SET };
{
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
+#ifdef NEW_PROC_API /* Newest method: UnixWare and newer Solarii. */
+ /* 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
{
procfs_ctl_t arg[2];
- if (mode == FLAG_SET) /* Set the flag (RLC, FORK, or ASYNC) */
+ if (mode == FLAG_SET) /* Set the flag (RLC, FORK, or ASYNC). */
arg[0] = PCSET;
- else /* Reset the flag */
+ else /* Reset the flag. */
arg[0] = GDBRESET;
arg[1] = flag;
}
#else
#ifdef PIOCSET /* Irix/Sol5 method */
- if (mode == FLAG_SET) /* Set the flag (hopefully RLC, FORK, or ASYNC) */
+ if (mode == FLAG_SET) /* Set the flag (hopefully RLC, FORK, or ASYNC). */
{
win = (ioctl (pi->ctl_fd, PIOCSET, &flag) >= 0);
}
- else /* Reset the flag */
+ else /* Reset the flag. */
{
win = (ioctl (pi->ctl_fd, PIOCRESET, &flag) >= 0);
}
}
break;
default:
- win = 0; /* fail -- unknown flag (can't do PR_ASYNC) */
+ win = 0; /* Fail -- unknown flag (can't do PR_ASYNC). */
break;
}
#endif
#endif
#endif
#undef GDBRESET
- /* The above operation renders the procinfo's cached pstatus obsolete. */
+ /* The above operation renders the procinfo's cached pstatus
+ obsolete. */
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
return win;
}
-/*
- * Function: proc_set_run_on_last_close
- *
- * Set the run_on_last_close flag.
- * Process with all threads will become runnable
- * when debugger closes all /proc fds.
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Set the run_on_last_close flag. Process with all threads will
+ become runnable when debugger closes all /proc fds. Returns
+ non-zero for success, zero for failure. */
int
proc_set_run_on_last_close (procinfo *pi)
return proc_modify_flag (pi, PR_RLC, FLAG_SET);
}
-/*
- * Function: proc_unset_run_on_last_close
- *
- * Reset the run_on_last_close flag.
- * Process will NOT become runnable
- * when debugger closes its file handles.
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Reset the run_on_last_close flag. The process will NOT become
+ runnable when debugger closes its file handles. Returns non-zero
+ for success, zero for failure. */
int
proc_unset_run_on_last_close (procinfo *pi)
}
#ifdef PR_KLC
-/*
- * Function: proc_set_kill_on_last_close
- *
- * Set the kill_on_last_close flag.
- * Process with all threads will be killed when debugger
- * closes all /proc fds (or debugger exits or dies).
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Set the kill_on_last_close flag. Process with all threads will be
+ killed when debugger closes all /proc fds (or debugger exits or
+ dies). Returns non-zero for success, zero for failure. */
int
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
- * closes its file handles (or exits or dies).
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Reset the kill_on_last_close flag. 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 (procinfo *pi)
}
#endif /* PR_KLC */
-/*
- * Function: proc_set_inherit_on_fork
- *
- * Set inherit_on_fork flag.
- * If the process forks a child while we are registered for events
- * in the parent, then we will also recieve events from the child.
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Set inherit_on_fork flag. If the process forks a child while we
+ are registered for events in the parent, then we will also recieve
+ events from the child. Returns non-zero for success, zero for
+ failure. */
int
proc_set_inherit_on_fork (procinfo *pi)
return proc_modify_flag (pi, PR_FORK, FLAG_SET);
}
-/*
- * Function: proc_unset_inherit_on_fork
- *
- * Reset inherit_on_fork flag.
- * If the process forks a child while we are registered for events
- * in the parent, then we will NOT recieve events from the child.
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Reset inherit_on_fork flag. If the process forks a child while we
+ are registered for events in the parent, then we will NOT recieve
+ events from the child. Returns non-zero for success, zero for
+ failure. */
int
proc_unset_inherit_on_fork (procinfo *pi)
}
#ifdef PR_ASYNC
-/*
- * Function: proc_set_async
- *
- * Set PR_ASYNC flag.
- * 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.
- */
+/* Set PR_ASYNC flag. 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 (procinfo *pi)
return proc_modify_flag (pi, PR_ASYNC, FLAG_SET);
}
-/*
- * Function: proc_unset_async
- *
- * Reset PR_ASYNC flag.
- * If one LWP stops because of a debug event (signal etc.),
- * then all other LWPs will stop as well.
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Reset PR_ASYNC flag. If one LWP stops because of a debug event
+ (signal etc.), then all other LWPs will stop as well. Returns
+ non-zero for success, zero for failure. */
int
proc_unset_async (procinfo *pi)
}
#endif /* PR_ASYNC */
-/*
- * Function: proc_stop_process
- *
- * Request the process/LWP to stop. Does not wait.
- * Returns non-zero for success, zero for failure.
- */
+/* Request the process/LWP to stop. Does not wait. Returns non-zero
+ for success, zero for failure. */
int
proc_stop_process (procinfo *pi)
{
int win;
- /*
- * We might conceivably apply this operation to an LWP, and
- * the LWP's ctl file descriptor might not be open.
- */
+ /* We might conceivably apply this operation to an LWP, and the
+ LWP's ctl file descriptor might not be open. */
if (pi->ctl_fd == 0 &&
open_procinfo_files (pi, FD_CTL) == 0)
{
#ifdef NEW_PROC_API
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
return win;
}
-/*
- * 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.
- */
+/* Wait for the process or LWP to stop (block until it does). Returns
+ non-zero for success, zero for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 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
{
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
return win;
}
-/*
- * Function: proc_run_process
- *
- * Make the process or LWP runnable.
- * Options (not all are implemented):
- * - single-step
- * - clear current fault
- * - clear current signal
- * - abort the current system call
- * - stop as soon as finished with system call
- * - (ioctl): set traced signal set
- * - (ioctl): set held signal set
- * - (ioctl): set traced fault set
- * - (ioctl): set start pc (vaddr)
- * Always clear the current fault.
- * Clear the current signal if 'signo' is zero.
- *
- * Arguments:
- * pi the process or LWP to operate on.
- * step if true, set the process or LWP to trap after one instr.
- * 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.
- */
+/* Make the process or LWP runnable.
+
+ Options (not all are implemented):
+ - single-step
+ - clear current fault
+ - clear current signal
+ - abort the current system call
+ - stop as soon as finished with system call
+ - (ioctl): set traced signal set
+ - (ioctl): set held signal set
+ - (ioctl): set traced fault set
+ - (ioctl): set start pc (vaddr)
+
+ Always clears the current fault. PI is the process or LWP to
+ operate on. If STEP is true, set the process or LWP to trap after
+ one instruction. If SIGNO is 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. */
int
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.
- */
-
+ /* 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)
{
return 0;
}
- runflags = PRCFAULT; /* always clear current fault */
+ runflags = PRCFAULT; /* Always clear current fault. */
if (step)
runflags |= PRSTEP;
if (signo == 0)
runflags |= PRCSIG;
- else if (signo != -1) /* -1 means do nothing W.R.T. signals */
+ else if (signo != -1) /* -1 means do nothing W.R.T. signals. */
proc_set_current_signal (pi, signo);
#ifdef NEW_PROC_API
return win;
}
-/*
- * Function: proc_set_traced_signals
- *
- * Register to trace signals in the process or LWP.
- * Returns non-zero for success, zero for failure.
- */
+/* Register to trace signals in the process or LWP. Returns non-zero
+ for success, zero for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#else /* ioctl method */
win = (ioctl (pi->ctl_fd, PIOCSTRACE, sigset) >= 0);
#endif
- /* The above operation renders the procinfo's cached pstatus obsolete. */
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
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.
- */
+/* Register to trace hardware faults in the process or LWP. Returns
+ non-zero for success, zero for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#else /* ioctl method */
win = (ioctl (pi->ctl_fd, PIOCSFAULT, fltset) >= 0);
#endif
- /* The above operation renders the procinfo's cached pstatus obsolete. */
+ /* The above operation renders the procinfo's cached pstatus obsolete. */
pi->status_valid = 0;
return win;
}
-/*
- * 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.
- */
+/* Register to trace entry to system calls in the process or LWP.
+ Returns non-zero for success, zero for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
char sysset[sizeof (sysset_t)];
} *argp;
int argp_size = sizeof (struct gdb_proc_ctl_pcsentry)
- - sizeof (sysset_t)
+ - sizeof (sysset_t)
+ sysset_t_size (pi);
argp = xmalloc (argp_size);
#else /* ioctl method */
win = (ioctl (pi->ctl_fd, PIOCSENTRY, sysset) >= 0);
#endif
- /* The above operation renders the procinfo's cached pstatus obsolete. */
+ /* 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.
- */
+/* Register to trace exit from system calls in the process or LWP.
+ Returns non-zero for success, zero for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
char sysset[sizeof (sysset_t)];
} *argp;
int argp_size = sizeof (struct gdb_proc_ctl_pcsexit)
- - sizeof (sysset_t)
+ - sizeof (sysset_t)
+ sysset_t_size (pi);
argp = xmalloc (argp_size);
#else /* ioctl method */
win = (ioctl (pi->ctl_fd, PIOCSEXIT, sysset) >= 0);
#endif
- /* The above operation renders the procinfo's cached pstatus obsolete. */
+ /* The above operation renders the procinfo's cached pstatus
+ obsolete. */
pi->status_valid = 0;
return win;
}
-/*
- * 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.
- */
+/* Specify the set of blocked / held signals in the process or LWP.
+ Returns non-zero for success, zero for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#else
win = (ioctl (pi->ctl_fd, PIOCSHOLD, sighold) >= 0);
#endif
- /* The above operation renders the procinfo's cached pstatus obsolete. */
+ /* The above operation renders the procinfo's cached pstatus
+ obsolete. */
pi->status_valid = 0;
return win;
}
-/*
- * Function: proc_get_pending_signals
- *
- * returns the set of signals that are pending in the process or LWP.
- * Will also copy the sigset if 'save' is non-zero.
- */
+/* Returns the set of signals that are pending in the process or LWP.
+ Will also copy the sigset if SAVE is non-zero. */
gdb_sigset_t *
proc_get_pending_signals (procinfo *pi, gdb_sigset_t *save)
{
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
return ret;
}
-/*
- * Function: proc_get_signal_actions
- *
- * returns the set of signal actions.
- * Will also copy the sigactionset if 'save' is non-zero.
- */
+/* Returns the set of signal actions. Will also copy the sigactionset
+ if SAVE is non-zero. */
gdb_sigaction_t *
proc_get_signal_actions (procinfo *pi, gdb_sigaction_t *save)
{
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
return ret;
}
-/*
- * Function: proc_get_held_signals
- *
- * returns the set of signals that are held / blocked.
- * Will also copy the sigset if 'save' is non-zero.
- */
+/* Returns the set of signals that are held / blocked. Will also copy
+ the sigset if SAVE is non-zero. */
gdb_sigset_t *
proc_get_held_signals (procinfo *pi, gdb_sigset_t *save)
{
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
return ret;
}
-/*
- * Function: proc_get_traced_signals
- *
- * returns the set of signals that are traced / debugged.
- * Will also copy the sigset if 'save' is non-zero.
- */
+/* Returns the set of signals that are traced / debugged. Will also
+ copy the sigset if SAVE is non-zero. */
gdb_sigset_t *
proc_get_traced_signals (procinfo *pi, gdb_sigset_t *save)
{
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
return ret;
}
-/*
- * Function: proc_trace_signal
- *
- * Add 'signo' to the set of signals that are traced.
- * Returns non-zero for success, zero for failure.
- */
+/* Add SIGNO to the set of signals that are traced. Returns non-zero
+ for success, zero for failure. */
int
proc_trace_signal (procinfo *pi, int signo)
{
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 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_traced_signals (pi, &temp))
{
- praddset (&temp, signo);
+ gdb_praddset (&temp, signo);
return proc_set_traced_signals (pi, &temp);
}
}
return 0; /* failure */
}
-/*
- * Function: proc_ignore_signal
- *
- * Remove 'signo' from the set of signals that are traced.
- * Returns non-zero for success, zero for failure.
- */
+/* Remove SIGNO from the set of signals that are traced. Returns
+ non-zero for success, zero for failure. */
int
proc_ignore_signal (procinfo *pi, int signo)
{
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 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_traced_signals (pi, &temp))
{
- prdelset (&temp, signo);
+ gdb_prdelset (&temp, signo);
return proc_set_traced_signals (pi, &temp);
}
}
return 0; /* failure */
}
-/*
- * Function: proc_get_traced_faults
- *
- * returns the set of hardware faults that are traced /debugged.
- * Will also copy the faultset if 'save' is non-zero.
- */
+/* Returns the set of hardware faults that are traced /debugged. Will
+ also copy the faultset if SAVE is non-zero. */
fltset_t *
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
return ret;
}
-/*
- * Function: proc_get_traced_sysentry
- *
- * returns the set of syscalls that are traced /debugged on entry.
- * Will also copy the syscall set if 'save' is non-zero.
- */
+/* Returns the set of syscalls that are traced /debugged on entry.
+ Will also copy the syscall set if SAVE is non-zero. */
sysset_t *
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 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 rsize;
if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysentry_offset,
- SEEK_SET)
+ SEEK_SET)
!= (off_t) pi->prstatus.pr_sysentry_offset)
return NULL;
size = sysset_t_size (pi);
return ret;
}
-/*
- * Function: proc_get_traced_sysexit
- *
- * returns the set of syscalls that are traced /debugged on exit.
- * Will also copy the syscall set if 'save' is non-zero.
- */
+/* Returns the set of syscalls that are traced /debugged on exit.
+ Will also copy the syscall set if SAVE is non-zero. */
sysset_t *
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 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 rsize;
- if (lseek (pi->status_fd, (off_t) pi->prstatus.pr_sysexit_offset, SEEK_SET)
+ 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);
return ret;
}
-/*
- * Function: proc_clear_current_fault
- *
- * The current fault (if any) is cleared; the associated signal
- * will not be sent to the process or LWP when it resumes.
- * Returns non-zero for success, zero for failure.
- */
+/* The current fault (if any) is cleared; the associated signal will
+ not be sent to the process or LWP when it resumes. Returns
+ non-zero for success, zero for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 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
{
procfs_ctl_t cmd = PCCFAULT;
+
win = (write (pi->ctl_fd, (void *) &cmd, sizeof (cmd)) == sizeof (cmd));
}
#else
return win;
}
-/*
- * Function: proc_set_current_signal
- *
- * Set the "current signal" that will be delivered next to the process.
- * NOTE: semantics are different from those of KILL.
- * This signal will be delivered to the process or LWP
- * immediately when it is resumed (even if the signal is held/blocked);
- * it will NOT immediately cause another event of interest, and will NOT
- * first trap back to the debugger.
- *
- * Returns non-zero for success, zero for failure.
- */
+/* Set the "current signal" that will be delivered next to the
+ process. NOTE: semantics are different from those of KILL. This
+ signal will be delivered to the process or LWP immediately when it
+ is resumed (even if the signal is held/blocked); it will NOT
+ immediately cause another event of interest, and will NOT first
+ trap back to the debugger. Returns non-zero for success, zero for
+ failure. */
int
proc_set_current_signal (procinfo *pi, int signo)
/* Use char array to avoid alignment issues. */
char sinfo[sizeof (gdb_siginfo_t)];
} arg;
- gdb_siginfo_t *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 replace it
+ with one that makes sure the ctl_fd is open. */
- /*
- * 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
- * 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.
- */
+ receives a PIOCSSIG with a signal identical to the current
+ signal, it messes up the current signal. Work around the kernel
+ bug. */
if (signo > 0 &&
signo == proc_cursig (pi))
- return 1; /* I assume this is a success? */
+ return 1; /* I assume this is a success? */
#endif
/* The pointer is just a type alias. */
- mysinfo = (gdb_siginfo_t *) &arg.sinfo;
- mysinfo->si_signo = signo;
- mysinfo->si_code = 0;
- mysinfo->si_pid = getpid (); /* ?why? */
- mysinfo->si_uid = getuid (); /* ?why? */
+ get_last_target_status (&wait_ptid, &wait_status);
+ if (ptid_equal (wait_ptid, inferior_ptid)
+ && wait_status.kind == TARGET_WAITKIND_STOPPED
+ && wait_status.value.sig == target_signal_from_host (signo)
+ && proc_get_status (pi)
+#ifdef NEW_PROC_API
+ && pi->prstatus.pr_lwp.pr_info.si_signo == signo
+#else
+ && pi->prstatus.pr_info.si_signo == signo
+#endif
+ )
+ /* Use the siginfo associated with the signal being
+ redelivered. */
+#ifdef NEW_PROC_API
+ memcpy (arg.sinfo, &pi->prstatus.pr_lwp.pr_info, sizeof (gdb_siginfo_t));
+#else
+ memcpy (arg.sinfo, &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? */
+ memcpy (arg.sinfo, &mysinfo, sizeof (gdb_siginfo_t));
+ }
#ifdef NEW_PROC_API
arg.cmd = PCSSIG;
return win;
}
-/*
- * Function: proc_clear_current_signal
- *
- * The current signal (if any) is cleared, and
- * is not sent to the process or LWP when it resumes.
- * Returns non-zero for success, zero for failure.
- */
+/* The current signal (if any) is cleared, and is not sent to the
+ process or LWP when it resumes. Returns non-zero for success, zero
+ for failure. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
/* Use char array to avoid alignment issues. */
char sinfo[sizeof (gdb_siginfo_t)];
} arg;
- gdb_siginfo_t *mysinfo;
+ gdb_siginfo_t mysinfo;
arg.cmd = PCSSIG;
/* The pointer is just a type alias. */
- mysinfo = (gdb_siginfo_t *) &arg.sinfo;
- mysinfo->si_signo = 0;
- mysinfo->si_code = 0;
- mysinfo->si_errno = 0;
- mysinfo->si_pid = getpid (); /* ?why? */
- mysinfo->si_uid = getuid (); /* ?why? */
+ mysinfo.si_signo = 0;
+ mysinfo.si_code = 0;
+ mysinfo.si_errno = 0;
+ mysinfo.si_pid = getpid (); /* ?why? */
+ mysinfo.si_uid = getuid (); /* ?why? */
+ memcpy (arg.sinfo, &mysinfo, sizeof (gdb_siginfo_t));
win = (write (pi->ctl_fd, (void *) &arg, sizeof (arg)) == sizeof (arg));
}
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 (procinfo *pi)
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 (procinfo *pi)
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 (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;
}
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 (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;
}
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;
}
-/*
- * Function: proc_kill
- *
- * Send a signal to the proc or lwp with the semantics of "kill()".
- * Returns non-zero for success, zero for failure.
- */
+/* Send a signal to the proc or lwp with the semantics of "kill()".
+ Returns non-zero for success, zero for failure. */
int
proc_kill (procinfo *pi, int signo)
{
int win;
- /*
- * We might conceivably apply this operation to an LWP, and
- * the LWP's ctl file descriptor might not be open.
- */
+ /* We might conceivably apply this operation to an LWP, and the
+ LWP's ctl file descriptor might not be open. */
if (pi->ctl_fd == 0 &&
open_procinfo_files (pi, FD_CTL) == 0)
win = (write (pi->ctl_fd, (char *) &cmd, sizeof (cmd)) == sizeof (cmd));
#else /* ioctl method */
/* FIXME: do I need the Alpha OSF fixups present in
- procfs.c/unconditionally_kill_inferior? Perhaps only for SIGKILL? */
+ procfs.c/unconditionally_kill_inferior? Perhaps only for SIGKILL? */
win = (ioctl (pi->ctl_fd, PIOCKILL, &signo) >= 0);
#endif
}
return win;
}
-/*
- * Function: proc_parent_pid
- *
- * Find the pid of the process that started this one.
- * Returns the parent process pid, or zero.
- */
+/* Find the pid of the process that started this one. Returns the
+ parent process pid, or zero. */
int
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
return pi->prstatus.pr_ppid;
}
-
/* Convert a target address (a.k.a. CORE_ADDR) into a host address
(a.k.a void pointer)! */
+#if (defined (PCWATCH) || defined (PIOCSWATCH)) \
+ && !(defined (PIOCOPENLWP) || defined (UNIXWARE))
static void *
procfs_address_to_host_pointer (CORE_ADDR addr)
{
+ struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
void *ptr;
- gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr));
- ADDRESS_TO_POINTER (builtin_type_void_data_ptr, &ptr, addr);
+ gdb_assert (sizeof (ptr) == TYPE_LENGTH (ptr_type));
+ gdbarch_address_to_pointer (target_gdbarch, ptr_type,
+ (gdb_byte *) &ptr, addr);
return ptr;
}
-
-/*
- * Function: proc_set_watchpoint
- *
- */
+#endif
int
proc_set_watchpoint (procinfo *pi, CORE_ADDR addr, int len, int wflags)
{
-#if !defined (TARGET_HAS_HARDWARE_WATCHPOINTS)
+#if !defined (PCWATCH) && !defined (PIOCSWATCH)
+ /* If neither or these is defined, we can't support watchpoints.
+ This just avoids possibly failing to compile the below on such
+ systems. */
return 0;
#else
-/* Horrible hack! Detect Solaris 2.5, because this doesn't work on 2.5 */
-#if defined (PIOCOPENLWP) || defined (UNIXWARE) /* Solaris 2.5: bail out */
+/* Horrible hack! Detect Solaris 2.5, because this doesn't work on 2.5. */
+#if defined (PIOCOPENLWP) || defined (UNIXWARE) /* Solaris 2.5: bail out. */
return 0;
#else
struct {
procfs_ctl_t cmd;
char watch[sizeof (prwatch_t)];
} arg;
- prwatch_t *pwatch;
+ prwatch_t pwatch;
- pwatch = (prwatch_t *) &arg.watch;
/* 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);
+ pwatch.pr_vaddr = (uintptr_t) procfs_address_to_host_pointer (addr);
#else
- pwatch->pr_vaddr = (caddr_t) procfs_address_to_host_pointer (addr);
+ pwatch.pr_vaddr = (caddr_t) procfs_address_to_host_pointer (addr);
#endif
- pwatch->pr_size = len;
- pwatch->pr_wflags = wflags;
+ pwatch.pr_size = len;
+ pwatch.pr_wflags = wflags;
#if defined(NEW_PROC_API) && defined (PCWATCH)
arg.cmd = PCWATCH;
+ memcpy (arg.watch, &pwatch, sizeof (prwatch_t));
return (write (pi->ctl_fd, &arg, sizeof (arg)) == sizeof (arg));
#else
#if defined (PIOCSWATCH)
- return (ioctl (pi->ctl_fd, PIOCSWATCH, pwatch) >= 0);
+ return (ioctl (pi->ctl_fd, PIOCSWATCH, &pwatch) >= 0);
#else
return 0; /* Fail */
#endif
#endif
}
-#ifdef TM_I386SOL2_H /* Is it hokey to use this? */
+#if (defined(__i386__) || defined(__x86_64__)) && defined (sun)
#include <sys/sysi86.h>
-/*
- * Function: proc_get_LDT_entry
- *
- * Inputs:
- * procinfo *pi;
- * int key;
- *
- * The 'key' is actually the value of the lower 16 bits of
- * the GS register for the LWP that we're interested in.
- *
- * Return: matching ssh struct (LDT entry).
- */
+/* The KEY is actually the value of the lower 16 bits of the GS
+ register for the LWP that we're interested in. Returns the
+ matching ssh struct (LDT entry). */
struct ssd *
proc_get_LDT_entry (procinfo *pi, int key)
proc_warn (pi, "proc_get_LDT_entry (open)", __LINE__);
return NULL;
}
- /* Make sure it gets closed again! */
+ /* Make sure it gets closed again! */
old_chain = make_cleanup_close (fd);
/* Now 'read' thru the table, find a match and return it. */
ldt_entry->acc1 == 0 &&
ldt_entry->acc2 == 0)
break; /* end of table */
- /* If key matches, return this entry. */
+ /* If key matches, return this entry. */
if (ldt_entry->sel == key)
return ldt_entry;
}
- /* Loop ended, match not found. */
+ /* Loop ended, match not found. */
return NULL;
#else
int nldt, i;
return NULL;
}
- /* Allocate space for the number of LDT entries. */
- /* This alloc has to persist, 'cause we return a pointer to it. */
+ /* Allocate space for the number of LDT entries. */
+ /* 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)
{
return NULL;
}
- /* Search the table and return the (first) entry matching 'key'. */
+ /* Search the table and return the (first) entry matching 'key'. */
for (i = 0; i < nldt; i++)
if (ldt_entry[i].sel == key)
return &ldt_entry[i];
- /* Loop ended, match not found. */
+ /* Loop ended, match not found. */
return NULL;
#endif
}
-#endif /* TM_I386SOL2_H */
+/* Returns the pointer to the LDT entry of PTID. */
+
+struct ssd *
+procfs_find_LDT_entry (ptid_t ptid)
+{
+ gdb_gregset_t *gregs;
+ int key;
+ procinfo *pi;
+
+ /* Find procinfo for the lwp. */
+ if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL)
+ {
+ warning (_("procfs_find_LDT_entry: could not find procinfo for %d:%ld."),
+ PIDGET (ptid), TIDGET (ptid));
+ return NULL;
+ }
+ /* get its general registers. */
+ if ((gregs = proc_get_gregs (pi)) == NULL)
+ {
+ warning (_("procfs_find_LDT_entry: could not read gregs for %d:%ld."),
+ PIDGET (ptid), TIDGET (ptid));
+ return NULL;
+ }
+ /* Now extract the GS register's lower 16 bits. */
+ key = (*gregs)[GS] & 0xffff;
+
+ /* Find the matching entry and return it. */
+ return proc_get_LDT_entry (pi, key);
+}
+
+#endif
/* =============== END, non-thread part of /proc "MODULE" =============== */
/* NOTE: you'll see more ifdefs and duplication of functions here,
since there is a different way to do threads on every OS. */
-/*
- * Function: proc_get_nthreads
- *
- * Return the number of threads for the process
- */
+/* Returns the number of threads for the process. */
#if defined (PIOCNTHR) && defined (PIOCTLIST)
-/*
- * OSF version
- */
-int
+/* OSF version */
+int
proc_get_nthreads (procinfo *pi)
{
int nthreads = 0;
#else
#if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */
-/*
- * Solaris and Unixware version
- */
+/* Solaris and Unixware version */
int
proc_get_nthreads (procinfo *pi)
{
if (!proc_get_status (pi))
return 0;
- /*
- * NEW_PROC_API: only works for the process procinfo,
- * because the LWP procinfos do not get prstatus filled in.
- */
-#ifdef NEW_PROC_API
- if (pi->tid != 0) /* find the parent 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
+ if (pi->tid != 0) /* Find the parent process procinfo. */
pi = find_procinfo_or_die (pi->pid, 0);
#endif
return pi->prstatus.pr_nlwp;
}
#else
-/*
- * Default version
- */
+/* Default version */
int
proc_get_nthreads (procinfo *pi)
{
#endif
#endif
-/*
- * Function: proc_get_current_thread (LWP version)
- *
- * Return the ID of the thread that had an event of interest.
- * (ie. the one that hit a breakpoint or other traced event).
- * All other things being equal, this should be the ID of a
- * thread that is currently executing.
- */
+/* LWP version.
+
+ Return the ID of the thread that had an event of interest.
+ (ie. the one that hit a breakpoint or other traced event). All
+ other things being equal, this should be the ID of a thread that is
+ currently executing. */
#if defined (SYS_lwpcreate) || defined (SYS_lwp_create) /* FIXME: multiple */
-/*
- * Solaris and Unixware version
- */
+/* Solaris and Unixware version */
int
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,
- * find the parent process procinfo.
- */
-
+ /* 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, find the parent process procinfo. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
#else
#if defined (PIOCNTHR) && defined (PIOCTLIST)
-/*
- * OSF version
- */
-int
+/* OSF version */
+int
proc_get_current_thread (procinfo *pi)
{
-#if 0 /* FIXME: not ready for prime time? */
+#if 0 /* FIXME: not ready for prime time? */
return pi->prstatus.pr_tid;
#else
return 0;
}
#else
-/*
- * Default version
- */
-int
+/* Default version */
+int
proc_get_current_thread (procinfo *pi)
{
return 0;
#endif
#endif
-/*
- * 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).
- *
- * This unfortunately requires a different method on every OS.
- *
- * Return: non-zero for success, zero for failure.
- */
+/* Discover the IDs of all the threads within the process, and create
+ a procinfo for each of them (chained to the parent). This
+ unfortunately requires a different method on every OS. Returns
+ non-zero for success, zero for failure. */
int
proc_delete_dead_threads (procinfo *parent, procinfo *thread, void *ignore)
}
#if defined (PIOCLSTATUS)
-/*
- * Solaris 2.5 (ioctl) version
- */
+/* Solaris 2.5 (ioctl) version */
int
proc_update_threads (procinfo *pi)
{
procinfo *thread;
int nlwp, i;
- /*
- * 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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 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 (ioctl (pi->ctl_fd, PIOCLSTATUS, prstatus) < 0)
proc_error (pi, "update_threads (PIOCLSTATUS)", __LINE__);
- /* Skip element zero, which represents the process as a whole. */
+ /* Skip element zero, which represents the process as a whole. */
for (i = 1; i < nlwp + 1; i++)
{
if ((thread = create_procinfo (pi->pid, prstatus[i].pr_who)) == NULL)
}
#else
#ifdef NEW_PROC_API
-/*
- * Unixware and Solaris 6 (and later) version
- */
+/* Unixware and Solaris 6 (and later) version. */
static void
do_closedir_cleanup (void *dir)
{
DIR *dirp;
int lwpid;
- /*
- * 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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
proc_iterate_over_threads (pi, proc_delete_dead_threads, NULL);
- /*
- * Unixware
- *
- * 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... ;-)
- */
+ /* Unixware
+
+ 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... ;-) */
strcpy (pathname, pi->pathname);
strcat (pathname, "/lwp");
}
#else
#ifdef PIOCTLIST
-/*
- * OSF version
- */
-int
+/* OSF version */
+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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
nthreads = proc_get_nthreads (pi);
if (nthreads < 2)
- return 0; /* nothing to do for 1 or fewer threads */
+ return 0; /* Nothing to do for 1 or fewer threads. */
threads = xmalloc (nthreads * sizeof (tid_t));
-
+
if (ioctl (pi->ctl_fd, PIOCTLIST, threads) < 0)
proc_error (pi, "procfs: update_threads (PIOCTLIST)", __LINE__);
return 1;
}
#else
-/*
- * Default version
- */
+/* Default version */
int
proc_update_threads (procinfo *pi)
{
#endif /* NEW_PROC_API */
#endif /* SOL 2.5 PIOCLSTATUS */
-/*
- * Function: proc_iterate_over_threads
- *
- * Description:
- * Given a pointer to a function, call that function once
- * for each lwp in the procinfo list, until the function
- * returns non-zero, in which event return the value
- * returned by the function.
- *
- * 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.
- *
- * Arguments:
- * pi - parent process procinfo
- * func - per-thread function
- * ptr - opaque parameter for function.
- *
- * Return:
- * First non-zero return value from the callee, or zero.
- */
+/* Given a pointer to a function, call that function once for each lwp
+ in the procinfo list, until the function returns non-zero, in which
+ event return the value returned by the function.
+
+ 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.
+
+ PI is the parent process procinfo. FUNC is the per-thread
+ function. PTR is an opaque parameter for function. Returns the
+ first non-zero return value from the callee, or zero. */
int
proc_iterate_over_threads (procinfo *pi,
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
- * replace it with one that makes sure the ctl_fd is open.
- */
-
+ /* 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 replace it
+ with one that makes sure the ctl_fd is open. */
+
if (pi->tid != 0)
pi = find_procinfo_or_die (pi->pid, 0);
for (thread = pi->thread_list; thread != NULL; thread = next)
{
- next = thread->next; /* in case thread is destroyed */
+ next = thread->next; /* In case thread is destroyed. */
if ((retval = (*func) (pi, thread, ptr)) != 0)
break;
}
/* =================== GDB "MODULE" =================== */
-/*
- * Here are all of the gdb target vector functions and their friends.
- */
+/* Here are all of the gdb target vector functions and their
+ friends. */
static ptid_t do_attach (ptid_t ptid);
static void do_detach (int signo);
-static int register_gdb_signals (procinfo *, gdb_sigset_t *);
-
-/*
- * Function: procfs_debug_inferior
- *
- * Sets up the inferior to be debugged.
- * Registers to trace signals, hardware faults, and syscalls.
- * Note: does not set RLC flag: caller may want to customize that.
- *
- * Returns: zero for success (note! unlike most functions in this module)
- * On failure, returns the LINE NUMBER where it failed!
- */
+static void proc_trace_syscalls_1 (procinfo *pi, int syscallnum,
+ int entry_or_exit, int mode, int from_tty);
+
+/* 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;
+
+/* Sets up the inferior to be debugged. Registers to trace signals,
+ hardware faults, and syscalls. Note: does not set RLC flag: caller
+ may want to customize that. Returns zero for success (note!
+ unlike most functions in this module); on failure, returns the LINE
+ NUMBER where it failed! */
static int
procfs_debug_inferior (procinfo *pi)
#ifdef PROCFS_DONT_TRACE_FAULTS
/* On some systems (OSF), we don't trace hardware faults.
Apparently it's enough that we catch them as signals.
- Wonder why we don't just do that in general? */
- premptyset (&traced_faults); /* don't trace faults. */
+ Wonder why we don't just do that in general? */
+ premptyset (&traced_faults); /* don't trace faults. */
#else
- /* Register to trace hardware faults in the child. */
- prfillset (&traced_faults); /* trace all faults... */
- prdelset (&traced_faults, FLTPAGE); /* except page fault. */
+ /* Register to trace hardware faults in the child. */
+ prfillset (&traced_faults); /* trace all faults... */
+ gdb_prdelset (&traced_faults, FLTPAGE); /* except page fault. */
#endif
if (!proc_set_traced_faults (pi, &traced_faults))
return __LINE__;
- /* Register to trace selected signals in the child. */
- premptyset (&traced_signals);
- if (!register_gdb_signals (pi, &traced_signals))
+ /* Initially, register to trace all signals in the child. */
+ prfillset (&traced_signals);
+ if (!proc_set_traced_signals (pi, &traced_signals))
return __LINE__;
gdb_praddsysset (traced_syscall_entries, SYS_exit);
#endif
#ifdef SYS_lwpexit
- gdb_praddsysset (traced_syscall_entries, SYS_lwpexit); /* And _lwp_exit... */
+ gdb_praddsysset (traced_syscall_entries, SYS_lwpexit);/* And _lwp_exit... */
#endif
#ifdef SYS_lwp_exit
gdb_praddsysset (traced_syscall_entries, SYS_lwp_exit);
#ifdef DYNAMIC_SYSCALLS
{
int callnum = find_syscall (pi, "_exit");
+
if (callnum >= 0)
gdb_praddsysset (traced_syscall_entries, callnum);
}
/* OSF method for tracing exec syscalls. Quoting:
Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
exits from exec system calls because of the user level loader. */
- /* FIXME: make nice and maybe move into an access function. */
+ /* FIXME: make nice and maybe move into an access function. */
{
int prfs_flags;
return __LINE__;
}
#else /* not PRFS_STOPEXEC */
- /* Everyone else's (except OSF) method for tracing exec syscalls */
+ /* Everyone else's (except OSF) method for tracing exec syscalls. */
/* GW: Rationale...
Not all systems with /proc have all the exec* syscalls with the same
names. On the SGI, for example, there is no SYS_exec, but there
- *is* a SYS_execv. So, we try to account for that. */
+ *is* a SYS_execv. So, we try to account for that. */
traced_syscall_exits = sysset_t_alloc (pi);
gdb_premptysysset (traced_syscall_exits);
gdb_praddsysset (traced_syscall_exits, SYS_lwpexit);
#endif
-#ifdef SYS_lwp_create /* FIXME: once only, please */
+#ifdef SYS_lwp_create /* FIXME: once only, please. */
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");
return 0;
}
-static void
-procfs_attach (char *args, int from_tty)
+static void
+procfs_attach (struct target_ops *ops, char *args, int from_tty)
{
char *exec_file;
int pid;
- if (!args)
- error_no_arg ("process-id to attach");
+ pid = parse_pid_to_attach (args);
- 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",
+ 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_to_ptid (pid)));
+ printf_filtered (_("Attaching to %s\n"),
+ target_pid_to_str (pid_to_ptid (pid)));
fflush (stdout);
}
inferior_ptid = do_attach (pid_to_ptid (pid));
- push_target (&procfs_ops);
+ push_target (ops);
}
-static void
-procfs_detach (char *args, int from_tty)
+static void
+procfs_detach (struct target_ops *ops, char *args, int from_tty)
{
- char *exec_file;
- int signo = 0;
+ int sig = 0;
+ int pid = PIDGET (inferior_ptid);
+
+ if (args)
+ sig = atoi (args);
if (from_tty)
{
+ 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_ptid));
- 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);
+
+ do_detach (sig);
+
inferior_ptid = null_ptid;
- unpush_target (&procfs_ops); /* Pop out of handling an inferior */
+ detach_inferior (pid);
+ unpush_target (ops);
}
static ptid_t
do_attach (ptid_t ptid)
{
procinfo *pi;
+ struct inferior *inf;
int fail;
+ int lwpid;
if ((pi = create_procinfo (PIDGET (ptid), 0)) == NULL)
- perror ("procfs: out of memory in 'attach'");
+ 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",
+ sprintf (errmsg, "do_attach: couldn't open /proc file for process %d",
PIDGET (ptid));
dead_procinfo (pi, errmsg, NOKILL);
}
if (!proc_set_run_on_last_close (pi))
dead_procinfo (pi, "do_attach: couldn't set RLC.", NOKILL);
- /* Now stop the process. */
+ /* Now stop the process. */
if (!proc_stop_process (pi))
dead_procinfo (pi, "do_attach: couldn't stop the process.", NOKILL);
pi->ignore_next_sigstop = 1;
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.",
+ 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);
if ((fail = procfs_debug_inferior (pi)) != 0)
dead_procinfo (pi, "do_attach: failed in procfs_debug_inferior", NOKILL);
+ inf = current_inferior ();
+ inferior_appeared (inf, pi->pid);
/* Let GDB know that the inferior was attached. */
- attach_flag = 1;
- return MERGEPID (pi->pid, proc_get_current_thread (pi));
+ inf->attach_flag = 1;
+
+ /* Create a procinfo for the current lwp. */
+ lwpid = proc_get_current_thread (pi);
+ create_procinfo (pi->pid, lwpid);
+
+ /* Add it to gdb's thread list. */
+ ptid = MERGEPID (pi->pid, lwpid);
+ add_thread (ptid);
+
+ return ptid;
}
static void
{
procinfo *pi;
- /* Find procinfo for the main process */
+ /* Find procinfo for the main process. */
pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0); /* FIXME: threads */
if (signo)
if (!proc_set_current_signal (pi, signo))
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, set_rlc", __LINE__);
}
- attach_flag = 0;
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.
-static void
-procfs_fetch_registers (int regno)
-{
- gdb_fpregset_t *fpregs;
- gdb_gregset_t *gregs;
- procinfo *pi;
- int pid;
- int tid;
+ ??? 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.
- pid = PIDGET (inferior_ptid);
- tid = TIDGET (inferior_ptid);
+ 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. */
- /* First look up procinfo for the main process. */
- pi = find_procinfo_or_die (pid, 0);
+static void
+procfs_fetch_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
+{
+ gdb_gregset_t *gregs;
+ procinfo *pi;
+ int pid = PIDGET (inferior_ptid);
+ int tid = TIDGET (inferior_ptid);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
- /* If the event thread is not the same as GDB's requested thread
- (ie. inferior_ptid), then look up procinfo for the requested
- thread. */
- if ((tid != 0) &&
- (tid != proc_get_current_thread (pi)))
- pi = find_procinfo_or_die (pid, tid);
+ pi = find_procinfo_or_die (pid, tid);
if (pi == NULL)
- error ("procfs: fetch_registers failed to find procinfo for %s",
+ 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 (FP0_REGNUM >= 0) /* need floating point? */
+ if (gdbarch_fp0_regnum (gdbarch) >= 0) /* Do we have an FPU? */
{
- if ((regno >= 0 && regno < FP0_REGNUM) ||
- regno == PC_REGNUM ||
- (DEPRECATED_NPC_REGNUM >= 0 && regno == DEPRECATED_NPC_REGNUM) ||
- regno == DEPRECATED_FP_REGNUM ||
- regno == SP_REGNUM)
- return; /* not a floating point register */
-
- if ((fpregs = proc_get_fpregs (pi)) == NULL)
+ 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, "fetch_registers, get_fpregs", __LINE__);
- supply_fpregset (fpregs);
+ supply_fpregset (regcache, (const gdb_fpregset_t *) fpregs);
}
}
-/* Get ready to modify the registers array. On machines which store
- individual registers, this doesn't need to do anything. On
- machines which store all the registers in one fell swoop, such as
- /proc, this makes sure that registers contains all the registers
- from the program being debugged. */
+/* Store register REGNUM back into the inferior. If REGNUM is -1, do
+ this for all registers.
-static void
-procfs_prepare_to_store (void)
-{
-#ifdef CHILD_PREPARE_TO_STORE
- CHILD_PREPARE_TO_STORE ();
-#endif
-}
+ 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.
-/*
- * 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.
- */
+ 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 (int regno)
+procfs_store_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
- gdb_fpregset_t *fpregs;
- gdb_gregset_t *gregs;
- procinfo *pi;
- int pid;
- int tid;
-
- pid = PIDGET (inferior_ptid);
- tid = TIDGET (inferior_ptid);
-
- /* First find procinfo for main process */
- pi = find_procinfo_or_die (pid, 0);
-
- /* If current lwp for process is not the same as requested thread
- (ie. inferior_ptid), then find procinfo for the requested thread. */
+ gdb_gregset_t *gregs;
+ procinfo *pi;
+ int pid = PIDGET (inferior_ptid);
+ int tid = TIDGET (inferior_ptid);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
- if ((tid != 0) &&
- (tid != proc_get_current_thread (pi)))
- pi = find_procinfo_or_die (pid, tid);
+ pi = find_procinfo_or_die (pid, tid);
if (pi == NULL)
- error ("procfs: store_registers: failed to find procinfo for %s",
+ 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 (FP0_REGNUM >= 0) /* need floating point? */
+ if (gdbarch_fp0_regnum (gdbarch) >= 0) /* Do we have an FPU? */
{
- if ((regno >= 0 && regno < FP0_REGNUM) ||
- regno == PC_REGNUM ||
- (DEPRECATED_NPC_REGNUM >= 0 && regno == DEPRECATED_NPC_REGNUM) ||
- regno == DEPRECATED_FP_REGNUM ||
- regno == SP_REGNUM)
- return; /* not a floating point register */
-
- if ((fpregs = proc_get_fpregs (pi)) == NULL)
+ 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 (fpregs, regno);
+ 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;
return 0;
}
-/*
- * Function: target_wait
- *
- * Retrieve the next stop event from the child process.
- * If child has not stopped yet, wait for it to stop.
- * Translate /proc eventcodes (or possibly wait eventcodes)
- * into gdb internal event codes.
- *
- * Return: id of process (and possibly thread) that incurred the event.
- * event codes are returned thru a pointer parameter.
- */
+/* Remove the breakpoint that we inserted in __dbx_link().
+ Does nothing if the breakpoint hasn't been inserted or has already
+ been removed. */
-static ptid_t
-procfs_wait (ptid_t ptid, struct target_waitstatus *status)
+static void
+remove_dbx_link_breakpoint (void)
{
- /* First cut: loosely based on original version 2.1 */
- procinfo *pi;
- int wstat;
- int temp_tid;
- ptid_t retval, temp_ptid;
- int why, what, flags;
- int retry = 0;
+ if (dbx_link_bpt_addr == 0)
+ return;
-wait_again:
+ if (deprecated_remove_raw_breakpoint (target_gdbarch, dbx_link_bpt) != 0)
+ warning (_("Unable to remove __dbx_link breakpoint."));
- retry++;
+ dbx_link_bpt_addr = 0;
+ dbx_link_bpt = NULL;
+}
+
+#ifdef SYS_syssgi
+/* 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 (target_gdbarch, NULL,
+ 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;
+}
+
+/* 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. */
+
+static 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);
+}
+
+/* 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,
+ find_memory_region_ftype 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);
+}
+#endif
+
+/* Retrieve the next stop event from the child process. If child has
+ not stopped yet, wait for it to stop. Translate /proc eventcodes
+ (or possibly wait eventcodes) into gdb internal event codes.
+ Returns the id of process (and possibly thread) that incurred the
+ event. Event codes are returned through a pointer parameter. */
+
+static ptid_t
+procfs_wait (struct target_ops *ops,
+ ptid_t ptid, struct target_waitstatus *status, int options)
+{
+ /* First cut: loosely based on original version 2.1. */
+ procinfo *pi;
+ int wstat;
+ int temp_tid;
+ ptid_t retval, temp_ptid;
+ int why, what, flags;
+ int retry = 0;
+
+wait_again:
+
+ retry++;
wstat = 0;
retval = pid_to_ptid (-1);
- /* Find procinfo for main process */
+ /* Find procinfo for main process. */
pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
if (pi)
{
- /* We must assume that the status is stale now... */
+ /* We must assume that the status is stale now... */
pi->status_valid = 0;
pi->gregs_valid = 0;
pi->fpregs_valid = 0;
-#if 0 /* just try this out... */
+#if 0 /* just try this out... */
flags = proc_flags (pi);
why = proc_why (pi);
if ((flags & PR_STOPPED) && (why == PR_REQUESTED))
- pi->status_valid = 0; /* re-read again, IMMEDIATELY... */
+ pi->status_valid = 0; /* re-read again, IMMEDIATELY... */
#endif
/* If child is not stopped, wait for it to stop. */
if (!(proc_flags (pi) & (PR_STOPPED | PR_ISTOP)) &&
!proc_wait_for_stop (pi))
{
- /* wait_for_stop failed: has the child terminated? */
+ /* wait_for_stop failed: has the child terminated? */
if (errno == ENOENT)
{
int wait_retval;
- /* /proc file not found; presumably child has terminated. */
- wait_retval = wait (&wstat); /* "wait" for the child's exit */
+ /* /proc file not found; presumably child has terminated. */
+ wait_retval = wait (&wstat); /* "wait" for the child's exit. */
- if (wait_retval != PIDGET (inferior_ptid)) /* wrong child? */
- error ("procfs: couldn't stop process %d: wait returned %d\n",
+ 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? */
+ 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. */
+ /* Unknown error from wait_for_stop. */
proc_error (pi, "target_wait (wait_for_stop)", __LINE__);
}
}
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);
case PR_SYSENTRY:
if (syscall_is_lwp_exit (pi, what))
{
- printf_filtered ("[%s exited]\n",
- target_pid_to_str (retval));
+ if (print_thread_events)
+ printf_unfiltered (_("[%s exited]\n"),
+ target_pid_to_str (retval));
delete_thread (retval);
status->kind = TARGET_WAITKIND_SPURIOUS;
return retval;
}
else if (syscall_is_exit (pi, what))
{
- /* Handle SYS_exit call only */
+ struct inferior *inf;
+
+ /* Handle SYS_exit call only. */
/* Stopped at entry to SYS_exit.
- Make it runnable, resume it, then use
+ Make it runnable, resume it, then use
the wait system call to get its exit code.
- Proc_run_process always clears the current
+ 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
+ /* 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)
+
+ inf = find_inferior_pid (pi->pid);
+ if (inf->attach_flag)
{
- /* Don't call wait: simulate waiting for exit,
+ /* Don't call wait: simulate waiting for exit,
return a "success" exit code. Bogus: what if
it returns something else? */
wstat = 0;
somehow, I could get its termination event
here. */
- /* If wait returns -1, that's what we return to GDB. */
+ /* If wait returns -1, that's what we return
+ to GDB. */
if (temp < 0)
retval = pid_to_ptid (temp);
}
}
else
{
- printf_filtered ("procfs: trapped on entry to ");
+ printf_filtered (_("procfs: trapped on entry to "));
proc_prettyprint_syscall (proc_what (pi), 0);
printf_filtered ("\n");
#ifndef PIOCSSPCACT
if ((nsysargs = proc_nsysarg (pi)) > 0 &&
(sysargs = proc_sysargs (pi)) != NULL)
{
- printf_filtered ("%ld syscall arguments:\n", nsysargs);
+ printf_filtered (_("%ld syscall arguments:\n"),
+ nsysargs);
for (i = 0; i < nsysargs; i++)
- printf_filtered ("#%ld: 0x%08lx\n",
+ printf_filtered ("#%ld: 0x%08lx\n",
i, sysargs[i]);
}
#endif
if (status)
{
- /* How to exit gracefully, returning "unknown event" */
+ /* How to exit gracefully, returning "unknown
+ event". */
status->kind = TARGET_WAITKIND_SPURIOUS;
return inferior_ptid;
}
/* 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. */
+ 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
else if (syscall_is_lwp_create (pi, what))
{
- /*
- * 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.
- */
+ /* 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);
temp_ptid = MERGEPID (pi->pid, temp_tid);
/* If not in GDB's thread list, add it. */
if (!in_thread_list (temp_ptid))
- {
- printf_filtered ("[New %s]\n",
- target_pid_to_str (temp_ptid));
- add_thread (temp_ptid);
- }
- /* Return to WFI, but tell it to immediately resume. */
+ add_thread (temp_ptid);
+
+ /* Return to WFI, but tell it to immediately resume. */
status->kind = TARGET_WAITKIND_SPURIOUS;
return inferior_ptid;
}
else if (syscall_is_lwp_exit (pi, what))
{
- printf_filtered ("[%s exited]\n",
- target_pid_to_str (retval));
+ if (print_thread_events)
+ printf_unfiltered (_("[%s exited]\n"),
+ target_pid_to_str (retval));
delete_thread (retval);
status->kind = TARGET_WAITKIND_SPURIOUS;
return retval;
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.
+ that threads were actually separate processes.
Irix, maybe? Anyway, low priority for now. */
}
else
{
- printf_filtered ("procfs: trapped on exit from ");
+ printf_filtered (_("procfs: trapped on exit from "));
proc_prettyprint_syscall (proc_what (pi), 0);
printf_filtered ("\n");
#ifndef PIOCSSPCACT
if ((nsysargs = proc_nsysarg (pi)) > 0 &&
(sysargs = proc_sysargs (pi)) != NULL)
{
- printf_filtered ("%ld syscall arguments:\n", nsysargs);
+ printf_filtered (_("%ld syscall arguments:\n"),
+ nsysargs);
for (i = 0; i < nsysargs; i++)
- printf_filtered ("#%ld: 0x%08lx\n",
+ printf_filtered ("#%ld: 0x%08lx\n",
i, sysargs[i]);
}
}
#else
if (retry < 5)
{
- printf_filtered ("Retry #%d:\n", retry);
+ printf_filtered (_("Retry #%d:\n"), retry);
pi->status_valid = 0;
goto wait_again;
}
/* If not in GDB's thread list, add it. */
temp_ptid = MERGEPID (pi->pid, temp_tid);
if (!in_thread_list (temp_ptid))
- {
- printf_filtered ("[New %s]\n",
- target_pid_to_str (temp_ptid));
- add_thread (temp_ptid);
- }
+ add_thread (temp_ptid);
status->kind = TARGET_WAITKIND_STOPPED;
status->value.sig = 0;
wstat = (what << 8) | 0177;
break;
case PR_FAULTED:
- switch (what) { /* FIXME: FAULTED_USE_SIGINFO */
+ switch (what) {
#ifdef FLTWATCH
case FLTWATCH:
wstat = (SIGTRAP << 8) | 0177;
wstat = (SIGTRAP << 8) | 0177;
break;
#endif
- /* FIXME: use si_signo where possible. */
+ /* FIXME: use si_signo where possible. */
case FLTPRIV:
-#if (FLTILL != FLTPRIV) /* avoid "duplicate case" error */
+#if (FLTILL != FLTPRIV) /* Avoid "duplicate case" error. */
case FLTILL:
#endif
wstat = (SIGILL << 8) | 0177;
break;
case FLTBPT:
-#if (FLTTRACE != FLTBPT) /* avoid "duplicate case" error */
+#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
+ == regcache_read_pc (get_current_regcache ()))
+ remove_dbx_link_breakpoint ();
+
wstat = (SIGTRAP << 8) | 0177;
break;
case FLTSTACK:
case FLTACCESS:
-#if (FLTBOUNDS != FLTSTACK) /* avoid "duplicate case" error */
+#if (FLTBOUNDS != FLTSTACK) /* Avoid "duplicate case" error. */
case FLTBOUNDS:
#endif
wstat = (SIGSEGV << 8) | 0177;
break;
case FLTIOVF:
case FLTIZDIV:
-#if (FLTFPE != FLTIOVF) /* avoid "duplicate case" error */
+#if (FLTFPE != FLTIOVF) /* Avoid "duplicate case" error. */
case FLTFPE:
#endif
wstat = (SIGFPE << 8) | 0177;
break;
- case FLTPAGE: /* Recoverable page fault */
- default: /* FIXME: use si_signo if possible for fault */
+ case FLTPAGE: /* Recoverable page fault */
+ default: /* FIXME: use si_signo if possible for
+ fault. */
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.
- */
+ /* Got this far without error: If retval isn't in the
+ threads database, add it. */
if (PIDGET (retval) > 0 &&
!ptid_equal (retval, inferior_ptid) &&
!in_thread_list (retval))
{
- /*
- * 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
- * later.
- */
- printf_filtered ("[New %s]\n", target_pid_to_str (retval));
+ /* 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 later. */
add_thread (retval);
if (find_procinfo (PIDGET (retval), TIDGET (retval)) == NULL)
create_procinfo (PIDGET (retval), TIDGET (retval));
-
- /* In addition, it's possible that this is the first
- * new thread we've seen, in which case we may not
- * have created entries for inferior_ptid yet.
- */
- if (TIDGET (inferior_ptid) != 0)
- {
- if (!in_thread_list (inferior_ptid))
- add_thread (inferior_ptid);
- if (find_procinfo (PIDGET (inferior_ptid),
- TIDGET (inferior_ptid)) == NULL)
- create_procinfo (PIDGET (inferior_ptid),
- TIDGET (inferior_ptid));
- }
}
}
- else /* flags do not indicate STOPPED */
+ else /* Flags do not indicate STOPPED. */
{
- /* surely this can't happen... */
+ /* surely this can't happen... */
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, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
+{
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return (*ops->deprecated_xfer_memory) (offset, readbuf,
+ len, 0/*read*/, NULL, ops);
+ if (writebuf)
+ return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
+ len, 1/*write*/, NULL, ops);
+ return -1;
+
+#ifdef NEW_PROC_API
+ case TARGET_OBJECT_AUXV:
+ return memory_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.
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.) */
+ negative values, but this capability isn't implemented here.) */
static int
-procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite,
+procfs_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int dowrite,
struct mem_attrib *attrib, struct target_ops *target)
{
procinfo *pi;
int nbytes = 0;
- /* Find procinfo for main process */
+ /* Find procinfo for main process. */
pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
if (pi->as_fd == 0 &&
open_procinfo_files (pi, FD_AS) == 0)
if (dowrite)
{
#ifdef NEW_PROC_API
- PROCFS_NOTE ("write memory: ");
+ PROCFS_NOTE ("write memory:\n");
#else
- PROCFS_NOTE ("write memory: \n");
+ PROCFS_NOTE ("write memory:\n");
#endif
nbytes = write (pi->as_fd, myaddr, len);
}
else
{
- PROCFS_NOTE ("read memory: \n");
+ PROCFS_NOTE ("read memory:\n");
nbytes = read (pi->as_fd, myaddr, len);
}
if (nbytes < 0)
return nbytes;
}
-/*
- * Function: invalidate_cache
- *
- * Called by target_resume before making child runnable.
- * Mark cached registers and status's invalid.
- * If there are "dirty" caches that need to be written back
- * to the child process, do that.
- *
- * 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
- * file descriptors for the parent process, but discard any file
- * descriptors we may have accumulated for the threads.
- *
- * Return value:
- * As this function is called by iterate_over_threads, it always
- * returns zero (so that iterate_over_threads will keep iterating).
- */
+/* Called by target_resume before making child runnable. Mark cached
+ registers and status's invalid. If there are "dirty" caches that
+ need to be written back to the child process, do that.
+ 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 file
+ descriptors for the parent process, but discard any file
+ descriptors we may have accumulated for the threads.
+
+ 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 (procinfo *parent, procinfo *pi, void *ptr)
{
- /*
- * About to run the child; invalidate caches and do any other cleanup.
- */
+ /* About to run the child; invalidate caches and do any other
+ cleanup. */
#if 0
if (pi->gregs_dirty)
if (!proc_set_gregs (pi)) /* flush gregs cache */
proc_warn (pi, "target_resume, set_gregs",
__LINE__);
- if (FP0_REGNUM >= 0)
+ if (gdbarch_fp0_regnum (target_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",
+ 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);
}
#if 0
-/*
- * Function: make_signal_thread_runnable
- *
- * A callback function for iterate_over_threads.
- * Find the asynchronous signal thread, and make it runnable.
- * See if that helps matters any.
- */
+/* A callback function for iterate_over_threads. Find the
+ asynchronous signal thread, and make it runnable. See if that
+ helps matters any. */
static int
make_signal_thread_runnable (procinfo *process, procinfo *pi, void *ptr)
}
#endif
-/*
- * Function: target_resume
- *
- * Make the child process runnable. Normally we will then call
- * 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
- * after executing a single instruction.
- * signo: if zero, then cancel any pending 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.
- ******* (not implemented yet)
- */
+/* Make the child process runnable. Normally we will then call
+ procfs_wait and wait for it to stop again (unless gdb is async).
+
+ If STEP is true, then arrange for the child to stop again after
+ executing a single instruction. If SIGNO is zero, then cancel any
+ pending signal; if non-zero, then arrange for the indicated signal
+ to be delivered to the child when it runs. If PID is -1, then
+ allow any child thread to run; if non-zero, then allow only the
+ indicated thread to run. (not implemented yet). */
static void
-procfs_resume (ptid_t ptid, int step, enum target_signal signo)
+procfs_resume (struct target_ops *ops,
+ 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
- (proc_trace_signals, proc_trace_faults)
+ (proc_trace_signals, proc_trace_faults)
PRSVADDR is unnecessary.
PRCFAULT may be replaced by a PIOCCFAULT call (proc_clear_current_fault)
This basically leaves PRSTEP and PRCSIG.
PRCSIG is like PIOCSSIG (proc_clear_current_signal).
So basically PR_STEP is the sole argument that must be passed
- to proc_run_process (for use in the prrun struct by ioctl). */
+ to proc_run_process (for use in the prrun struct by ioctl). */
- /* Find procinfo for main process */
+ /* Find procinfo for main process. */
pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
- /* First cut: ignore pid argument */
+ /* First cut: ignore pid argument. */
errno = 0;
/* Convert signal to host numbering. */
pi->ignore_next_sigstop = 0;
- /* Running the process voids all cached registers and status. */
- /* Void the threads' caches first */
- proc_iterate_over_threads (pi, invalidate_cache, NULL);
+ /* Running the process voids all cached registers and status. */
+ /* Void the threads' caches first. */
+ proc_iterate_over_threads (pi, invalidate_cache, NULL);
/* Void the process procinfo's caches. */
invalidate_cache (NULL, pi, NULL);
if (PIDGET (ptid) != -1)
{
- /* Resume a specific thread, presumably suppressing the others. */
+ /* Resume a specific thread, presumably suppressing the
+ others. */
thread = find_procinfo (PIDGET (ptid), TIDGET (ptid));
if (thread != NULL)
{
if (thread->tid != 0)
{
- /* We're to resume a specific thread, and not the others.
- * Set the child process's PR_ASYNC flag.
- */
+ /* We're to resume a specific thread, and not the
+ others. Set the child process's PR_ASYNC flag. */
#ifdef PR_ASYNC
if (!proc_set_async (pi))
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
- pi = thread; /* substitute the thread's procinfo for run */
+ pi = thread; /* Substitute the thread's procinfo
+ for run. */
}
}
}
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
- * (see "handle" command), and arrange for the target
- * to be stopped or not, according to these settings.
- *
- * Returns non-zero for success, zero for failure.
- */
-
-static int
-register_gdb_signals (procinfo *pi, gdb_sigset_t *signals)
-{
- int signo;
-
- for (signo = 0; signo < NSIG; signo ++)
- if (signal_stop_state (target_signal_from_host (signo)) == 0 &&
- signal_print_state (target_signal_from_host (signo)) == 0 &&
- signal_pass_state (target_signal_from_host (signo)) == 1)
- prdelset (signals, signo);
- else
- praddset (signals, signo);
-
- return proc_set_traced_signals (pi, signals);
-}
-
-/*
- * Function: target_notice_signals
- *
- * Set up to trace signals in the child process.
- */
+/* Set up to trace signals in the child process. */
static void
-procfs_notice_signals (ptid_t ptid)
+procfs_pass_signals (int numsigs, unsigned char *pass_signals)
{
gdb_sigset_t signals;
- procinfo *pi = find_procinfo_or_die (PIDGET (ptid), 0);
+ procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ int signo;
- if (proc_get_traced_signals (pi, &signals) &&
- register_gdb_signals (pi, &signals))
- return;
- else
- proc_error (pi, "notice_signals", __LINE__);
-}
+ prfillset (&signals);
-/*
- * Function: target_files_info
- *
- * Print status information about the child process.
- */
+ for (signo = 0; signo < NSIG; signo++)
+ {
+ int target_signo = target_signal_from_host (signo);
+ if (target_signo < numsigs && pass_signals[target_signo])
+ gdb_prdelset (&signals, signo);
+ }
-static void
-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_ptid));
+ if (!proc_set_traced_signals (pi, &signals))
+ proc_error (pi, "pass_signals", __LINE__);
}
-/*
- * Function: target_open
- *
- * A dummy: you don't open procfs.
- */
+/* Print status information about the child process. */
static void
-procfs_open (char *args, int from_tty)
-{
- 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
- * for "run" or "attach".
- */
-
-int procfs_suppress_run = 0; /* Non-zero if procfs should pretend not to
- be a runnable target. Used by targets
- that can sit atop procfs, such as solaris
- thread support. */
-
-
-static int
-procfs_can_run (void)
+procfs_files_info (struct target_ops *ignore)
{
- /* 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. */
+ struct inferior *inf = current_inferior ();
- return !procfs_suppress_run;
+ printf_filtered (_("\tUsing the running image of %s %s via /proc.\n"),
+ inf->attach_flag? "attached": "child",
+ target_pid_to_str (inferior_ptid));
}
-/*
- * Function: target_stop
- *
- * Stop the child process asynchronously, as when the
- * gdb user types control-c or presses a "stop" button.
- *
- * Works by sending kill(SIGINT) to the child's process group.
- */
+/* Stop the child process asynchronously, as when the gdb user types
+ control-c or presses a "stop" button. Works by sending
+ kill(SIGINT) to the child's process group. */
static void
-procfs_stop (void)
+procfs_stop (ptid_t ptid)
{
- kill (-inferior_process_group, SIGINT);
+ 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,
- * 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.
- */
+/* Make it die. Wait for it to die. Clean up after it. 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 (procinfo *pi)
parent_pid = proc_parent_pid (pi);
#ifdef PROCFS_NEED_CLEAR_CURSIG_FOR_KILL
- /* FIXME: use access functions */
+ /* FIXME: use access functions. */
/* Alpha OSF/1-3.x procfs needs a clear of the current signal
before the PIOCKILL, otherwise it might generate a corrupted core
file for the inferior. */
newsiginfo.si_errno = 0;
newsiginfo.si_pid = getpid ();
newsiginfo.si_uid = getuid ();
- /* FIXME: use proc_set_current_signal */
+ /* FIXME: use proc_set_current_signal. */
ioctl (pi->ctl_fd, PIOCSSIG, &newsiginfo);
}
#else /* PROCFS_NEED_PIOCSSIG_FOR_KILL */
/* 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
}
}
-/*
- * Function: target_kill_inferior
- *
- * We're done debugging it, and we want it to go away.
- * Then we want GDB to forget all about it.
- */
+/* We're done debugging it, and we want it to go away. Then we want
+ GDB to forget all about it. */
-static void
-procfs_kill_inferior (void)
+static void
+procfs_kill_inferior (struct target_ops *ops)
{
if (!ptid_equal (inferior_ptid, null_ptid)) /* ? */
{
- /* Find procinfo for main process */
+ /* Find procinfo for main process. */
procinfo *pi = find_procinfo (PIDGET (inferior_ptid), 0);
if (pi)
}
}
-/*
- * Function: target_mourn_inferior
- *
- * Forget we ever debugged this thing!
- */
+/* Forget we ever debugged this thing! */
-static void
-procfs_mourn_inferior (void)
+static void
+procfs_mourn_inferior (struct target_ops *ops)
{
procinfo *pi;
if (!ptid_equal (inferior_ptid, null_ptid))
{
- /* Find procinfo for main process */
+ /* Find procinfo for main process. */
pi = find_procinfo (PIDGET (inferior_ptid), 0);
if (pi)
destroy_procinfo (pi);
}
- unpush_target (&procfs_ops);
+ unpush_target (ops);
+
+ if (dbx_link_bpt != NULL)
+ {
+ deprecated_remove_raw_breakpoint (target_gdbarch, 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,
- * 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.
- */
+/* 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 (int pid)
+static void
+procfs_init_inferior (struct target_ops *ops, int pid)
{
procinfo *pi;
gdb_sigset_t signals;
int fail;
+ int lwpid;
/* This routine called on the parent side (GDB side)
after GDB forks the inferior. */
-
- push_target (&procfs_ops);
+ push_target (ops);
if ((pi = create_procinfo (pid, 0)) == NULL)
- perror ("procfs: out of memory in 'init_inferior'");
+ perror (_("procfs: out of memory in 'init_inferior'"));
if (!open_procinfo_files (pi, FD_CTL))
proc_error (pi, "init_inferior, open_proc_files", __LINE__);
PIOCSFAULT
*/
- /* If not stopped yet, wait for it to stop. */
+ /* If not stopped yet, wait for it to stop. */
if (!(proc_flags (pi) & PR_STOPPED) &&
!(proc_wait_for_stop (pi)))
dead_procinfo (pi, "init_inferior: wait_for_stop failed", KILL);
/* Save some of the /proc state to be restored if we detach. */
/* FIXME: Why? In case another debugger was debugging it?
- We're it's parent, for Ghu's sake! */
+ We're it's parent, for Ghu's sake! */
if (!proc_get_traced_signals (pi, &pi->saved_sigset))
proc_error (pi, "init_inferior, get_traced_signals", __LINE__);
if (!proc_get_held_signals (pi, &pi->saved_sighold))
if (!proc_get_traced_sysexit (pi, pi->saved_exitset))
proc_error (pi, "init_inferior, get_traced_sysexit", __LINE__);
- /* Register to trace selected signals in the child. */
- prfillset (&signals);
- if (!register_gdb_signals (pi, &signals))
- proc_error (pi, "init_inferior, register_signals", __LINE__);
-
if ((fail = procfs_debug_inferior (pi)) != 0)
proc_error (pi, "init_inferior (procfs_debug_inferior)", fail);
if (!proc_set_run_on_last_close (pi))
proc_error (pi, "init_inferior, set_RLC", __LINE__);
- /* The 'process ID' we return to GDB is composed of
- the actual process ID plus the lwp ID. */
- inferior_ptid = MERGEPID (pi->pid, proc_get_current_thread (pi));
+ /* We now have have access to the lwpid of the main thread/lwp. */
+ lwpid = proc_get_current_thread (pi);
+
+ /* Create a procinfo for the main lwp. */
+ create_procinfo (pid, lwpid);
+
+ /* We already have a main thread registered in the thread table at
+ this point, but it didn't have any lwp info yet. Notify the core
+ about it. This changes inferior_ptid as well. */
+ thread_change_ptid (pid_to_ptid (pid),
+ MERGEPID (pid, lwpid));
-#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 */
-}
-
-/*
- * Function: set_exec_trap
- *
- * When GDB forks to create a new process, this function is called
- * on the child side of the fork before GDB exec's the user program.
- * Its job is to make the child minimally debuggable, so that the
- * parent GDB process can connect to the child and take over.
- * This function should do only the minimum to make that possible,
- * and to synchronize with the parent process. The parent process
- * should take care of the details.
- */
+
+#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
+}
+
+/* When GDB forks to create a new process, this function is called on
+ the child side of the fork before GDB exec's the user program. Its
+ job is to make the child minimally debuggable, so that the parent
+ GDB process can connect to the child and take over. This function
+ should do only the minimum to make that possible, and to
+ synchronize with the parent process. The parent process should
+ take care of the details. */
static void
procfs_set_exec_trap (void)
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)
{
proc_warn (pi, "set_exec_trap, open_proc_files", __LINE__);
gdb_flush (gdb_stderr);
- /* no need to call "dead_procinfo", because we're going to exit. */
+ /* No need to call "dead_procinfo", because we're going to
+ exit. */
_exit (127);
}
/* OSF method for tracing exec syscalls. Quoting:
Under Alpha OSF/1 we have to use a PIOCSSPCACT ioctl to trace
exits from exec system calls because of the user level loader. */
- /* FIXME: make nice and maybe move into an access function. */
+ /* FIXME: make nice and maybe move into an access function. */
{
int prfs_flags;
}
}
#else /* not PRFS_STOPEXEC */
- /* Everyone else's (except OSF) method for tracing exec syscalls */
+ /* Everyone else's (except OSF) method for tracing exec syscalls. */
/* GW: Rationale...
Not all systems with /proc have all the exec* syscalls with the same
names. On the SGI, for example, there is no SYS_exec, but there
- *is* a SYS_execv. So, we try to account for that. */
+ *is* a SYS_execv. So, we try to account for that. */
exitset = sysset_t_alloc (pi);
gdb_premptysysset (exitset);
}
#endif /* PRFS_STOPEXEC */
- /* FIXME: should this be done in the parent instead? */
+ /* FIXME: should this be done in the parent instead? */
/* Turn off inherit on fork flag so that all grand-children
of gdb start with tracing flags cleared. */
if (!proc_unset_inherit_on_fork (pi))
if (!proc_unset_run_on_last_close (pi))
proc_warn (pi, "set_exec_trap, unset_RLC", __LINE__);
- /* FIXME: No need to destroy the procinfo --
- we have our own address space, and we're about to do an exec! */
+ /* 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,
- * 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
- * be abstracted out and shared with other unix targets such as
- * infptrace?
- */
+/* This function is called BEFORE gdb forks the inferior process. 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 be
+ abstracted out and shared with other unix targets such as
+ inf-ptrace? */
static void
-procfs_create_inferior (char *exec_file, char *allargs, char **env)
+procfs_create_inferior (struct target_ops *ops, char *exec_file,
+ char *allargs, char **env, int from_tty)
{
char *shell_file = getenv ("SHELL");
char *tryname;
+ int pid;
+
if (shell_file != NULL && strchr (shell_file, '/') == NULL)
{
/* 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,
- procfs_init_inferior, NULL, shell_file);
+ pid = fork_inferior (exec_file, allargs, env, procfs_set_exec_trap,
+ NULL, NULL, shell_file);
- /* We are at the first instruction we care about. */
- /* Pedal to the metal... */
+ procfs_init_inferior (ops, pid);
+}
- proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
+/* An observer for the "inferior_created" event. */
+
+static void
+procfs_inferior_created (struct target_ops *ops, int from_tty)
+{
+#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.
+
+ Since these notifications are only ever enabled when we spawned
+ the inferior ourselves, there is nothing to do when the inferior
+ was created by attaching to an already running process, or when
+ debugging a core file. */
+ if (current_inferior ()->attach_flag || !target_can_run (¤t_target))
+ return;
+
+ proc_trace_syscalls_1 (find_procinfo_or_die (PIDGET (inferior_ptid), 0),
+ SYS_syssgi, PR_SYSEXIT, FLAG_RESET, 0);
+#endif
}
-/*
- * Function: notice_thread
- *
- * Callback for find_new_threads.
- * Calls "add_thread".
- */
+/* Callback for find_new_threads. Calls "add_thread". */
static int
procfs_notice_thread (procinfo *pi, procinfo *thread, void *ptr)
{
ptid_t gdb_threadid = MERGEPID (pi->pid, thread->tid);
- if (!in_thread_list (gdb_threadid))
+ if (!in_thread_list (gdb_threadid) || is_exited (gdb_threadid))
add_thread (gdb_threadid);
return 0;
}
-/*
- * Function: target_find_new_threads
- *
- * Query all the threads that the target knows about,
- * and give them back to GDB to add to its list.
- */
+/* 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 (void)
+procfs_find_new_threads (struct target_ops *ops)
{
procinfo *pi;
- /* Find procinfo for main process */
+ /* Find procinfo for main process. */
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'.
- *
- * This guy doesn't really seem to be doing his job.
- * Got to investigate how to tell when a thread is really gone.
- */
+/* Return true if the thread is still 'alive'. This guy doesn't
+ really seem to be doing his job. Got to investigate how to tell
+ when a thread is really gone. */
static int
-procfs_thread_alive (ptid_t ptid)
+procfs_thread_alive (struct target_ops *ops, ptid_t ptid)
{
int proc, thread;
procinfo *pi;
proc = PIDGET (ptid);
thread = TIDGET (ptid);
- /* If I don't know it, it ain't alive! */
+ /* If I don't know it, it ain't alive! */
if ((pi = find_procinfo (proc, thread)) == NULL)
return 0;
destroy_procinfo (pi);
return 0;
}
- /* I couldn't have got its status if it weren't alive, so it's alive. */
+ /* I couldn't have got its status if it weren't alive, so it's
+ alive. */
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 (ptid_t ptid)
+procfs_pid_to_str (struct target_ops *ops, ptid_t ptid)
{
static char buf[80];
- int proc, thread;
- procinfo *pi;
- proc = PIDGET (ptid);
- thread = TIDGET (ptid);
- 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;
}
-/*
- * Function: procfs_set_watchpoint
- * Insert a watchpoint
- */
+/* Insert a watchpoint. */
-int
+int
procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag,
- int after)
+ int after)
{
#ifndef UNIXWARE
#ifndef AIX5
int pflags = 0;
- procinfo *pi;
+ procinfo *pi;
- pi = find_procinfo_or_die (PIDGET (ptid) == -1 ?
+ 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 */
+ /* Translate from GDB's flags to /proc's. */
+ if (len > 0) /* len == 0 means delete watchpoint. */
{
- switch (rwflag) { /* FIXME: need an enum! */
+ switch (rwflag) { /* FIXME: need an enum! */
case hw_write: /* default watchpoint (write) */
pflags = WRITE_WATCHFLAG;
break;
case hw_execute: /* execution HW breakpoint */
pflags = EXEC_WATCHFLAG;
break;
- default: /* Something weird. Return error. */
+ default: /* Something weird. Return error. */
return -1;
}
- if (after) /* Stop after r/w access is completed. */
+ if (after) /* Stop after r/w access is completed. */
pflags |= AFTER_WATCHFLAG;
}
if (!proc_set_watchpoint (pi, addr, len, pflags))
{
- if (errno == E2BIG) /* Typical error for no resources */
+ if (errno == E2BIG) /* Typical error for no resources. */
return -1; /* fail */
/* GDB may try to remove the same watchpoint twice.
If a remove request returns no match, don't error. */
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. */
+ 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
procfs_address_to_host_pointer will reveal that an internal error
will be generated when the host and target pointer sizes are
different. */
- if (sizeof (void *) != TYPE_LENGTH (builtin_type_void_data_ptr))
+ struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
+
+ if (sizeof (void *) != TYPE_LENGTH (ptr_type))
return 0;
/* Other tests here??? */
return 1;
-#endif
}
-/*
- * Function: stopped_by_watchpoint
- *
- * Returns non-zero if process is stopped on a hardware watchpoint fault,
- * else returns zero.
- */
+/* Returns non-zero if process is stopped on a hardware watchpoint
+ fault, else returns zero. */
-int
-procfs_stopped_by_watchpoint (ptid_t ptid)
+static int
+procfs_stopped_by_watchpoint (void)
{
procinfo *pi;
- 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;
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
if (proc_flags (pi) & (PR_STOPPED | PR_ISTOP))
{
if (proc_why (pi) == PR_FAULTED)
- {
+ {
#ifdef FLTWATCH
if (proc_what (pi) == FLTWATCH)
return 1;
return 0;
}
-#ifdef TM_I386SOL2_H
-/*
- * Function: procfs_find_LDT_entry
- *
- * Input:
- * ptid_t ptid; // The GDB-style pid-plus-LWP.
- *
- * Return:
- * pointer to the corresponding LDT entry.
- */
+/* Returns 1 if the OS knows the position of the triggered watchpoint,
+ and sets *ADDR to that address. Returns 0 if OS cannot report that
+ address. This function is only called if
+ procfs_stopped_by_watchpoint returned 1, thus no further checks are
+ done. The function also assumes that ADDR is not NULL. */
-struct ssd *
-procfs_find_LDT_entry (ptid_t ptid)
+static int
+procfs_stopped_data_address (struct target_ops *targ, CORE_ADDR *addr)
{
- gdb_gregset_t *gregs;
- int key;
- procinfo *pi;
+ procinfo *pi;
- /* Find procinfo for the lwp. */
- if ((pi = find_procinfo (PIDGET (ptid), TIDGET (ptid))) == NULL)
+ pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
+ return proc_watchpoint_address (pi, addr);
+}
+
+static int
+procfs_insert_watchpoint (CORE_ADDR addr, int len, int type,
+ struct expression *cond)
+{
+ if (!target_have_steppable_watchpoint
+ && !gdbarch_have_nonsteppable_watchpoint (target_gdbarch))
{
- warning ("procfs_find_LDT_entry: could not find procinfo for %d:%d.",
- PIDGET (ptid), TIDGET (ptid));
- return NULL;
+ /* When a hardware watchpoint fires off the PC will be left at
+ the instruction following the one which caused the
+ watchpoint. It will *NOT* be necessary for GDB to step over
+ the watchpoint. */
+ return procfs_set_watchpoint (inferior_ptid, addr, len, type, 1);
}
- /* get its general registers. */
- if ((gregs = proc_get_gregs (pi)) == NULL)
+ else
{
- warning ("procfs_find_LDT_entry: could not read gregs for %d:%d.",
- PIDGET (ptid), TIDGET (ptid));
- return NULL;
+ /* When a hardware watchpoint fires off the PC will be left at
+ the instruction which caused the watchpoint. It will be
+ necessary for GDB to step over the watchpoint. */
+ return procfs_set_watchpoint (inferior_ptid, addr, len, type, 0);
}
- /* Now extract the GS register's lower 16 bits. */
- key = (*gregs)[GS] & 0xffff;
+}
- /* Find the matching entry and return it. */
- return proc_get_LDT_entry (pi, key);
+static int
+procfs_remove_watchpoint (CORE_ADDR addr, int len, int type,
+ struct expression *cond)
+{
+ return procfs_set_watchpoint (inferior_ptid, addr, 0, 0, 0);
+}
+
+static int
+procfs_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
+{
+ /* The man page for proc(4) on Solaris 2.6 and up says that the
+ system can support "thousands" of hardware watchpoints, but gives
+ no method for finding out how many; It doesn't say anything about
+ the allowed size for the watched area either. So we just tell
+ GDB 'yes'. */
+ return 1;
+}
+
+void
+procfs_use_watchpoints (struct target_ops *t)
+{
+ t->to_stopped_by_watchpoint = procfs_stopped_by_watchpoint;
+ t->to_insert_watchpoint = procfs_insert_watchpoint;
+ t->to_remove_watchpoint = procfs_remove_watchpoint;
+ t->to_region_ok_for_hw_watchpoint = procfs_region_ok_for_hw_watchpoint;
+ t->to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint;
+ t->to_stopped_data_address = procfs_stopped_data_address;
}
-#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.
- */
+
+/* Memory Mappings Functions: */
+
+/* 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.
+
+ PI is the procinfo struct for the process to be mapped. FUNC is
+ the callback function to be called by this iterator. DATA is the
+ optional opaque data to be passed to the callback function.
+ CHILD_FUNC is the optional secondary function pointer to be passed
+ to the child function. Returns the 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) (),
+iterate_over_mappings (procinfo *pi, find_memory_region_ftype child_func,
+ void *data,
+ int (*func) (struct prmap *map,
+ find_memory_region_ftype child_func,
void *data))
{
char pathname[MAX_PROC_NAME_SIZE];
struct stat sbuf;
#endif
- /* Get the number of mappings, allocate space,
+ /* Get the number of mappings, allocate space,
and read the mappings into prmaps. */
#ifdef NEW_PROC_API
- /* Open map fd. */
+ /* 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 sure it gets closed again. */
make_cleanup_close (map_fd);
- /* Use stat to determine the file size, and compute
+ /* 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__);
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.
- */
+/* Implements the to_find_memory_regions method. Calls an external
+ function for each memory region.
+ 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)
+find_memory_regions_callback (struct prmap *map,
+ find_memory_region_ftype func, void *data)
{
return (*func) ((CORE_ADDR) map->pr_vaddr,
- map->pr_size,
+ map->pr_size,
(map->pr_mflags & MA_READ) != 0,
(map->pr_mflags & MA_WRITE) != 0,
- (map->pr_mflags & MA_EXEC) != 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.
- */
+/* 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)
+proc_find_memory_regions (find_memory_region_ftype func, void *data)
{
procinfo *pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
- return iterate_over_mappings (pi, func, data,
+ return iterate_over_mappings (pi, func, data,
find_memory_regions_callback);
}
-/*
- * Function: mappingflags
- *
- * Returns an ascii representation of a memory mapping's flags.
- */
+/* Returns an ascii representation of a memory mapping's flags. */
static char *
mappingflags (long flags)
return (asciiflags);
}
-/*
- * Function: info_mappings_callback
- *
- * Callback function, does the actual work for 'info proc mappings'.
- */
+/* Callback function, does the actual work for 'info proc
+ mappings'. */
-/* ARGSUSED */
static int
-info_mappings_callback (struct prmap *map, int (*ignore) (), void *unused)
+info_mappings_callback (struct prmap *map, find_memory_region_ftype ignore,
+ void *unused)
{
- char *data_fmt_string;
-
- if (TARGET_ADDR_BIT == 32)
- data_fmt_string = "\t%#10lx %#10lx %#10x %#10x %7s\n";
- else
- data_fmt_string = " %#18lx %#18lx %#10x %#10x %7s\n";
+ unsigned int pr_off;
- printf_filtered (data_fmt_string,
- (unsigned long) map->pr_vaddr,
- (unsigned long) map->pr_vaddr + map->pr_size - 1,
- map->pr_size,
#ifdef PCAGENT /* Horrible hack: only defined on Solaris 2.6+ */
- (unsigned int) map->pr_offset,
+ pr_off = (unsigned int) map->pr_offset;
#else
- map->pr_off,
+ pr_off = map->pr_off;
#endif
- mappingflags (map->pr_mflags));
+
+ if (gdbarch_addr_bit (target_gdbarch) == 32)
+ printf_filtered ("\t%#10lx %#10lx %#10lx %#10x %7s\n",
+ (unsigned long) map->pr_vaddr,
+ (unsigned long) map->pr_vaddr + map->pr_size - 1,
+ (unsigned long) map->pr_size,
+ pr_off,
+ mappingflags (map->pr_mflags));
+ else
+ printf_filtered (" %#18lx %#18lx %#10lx %#10x %7s\n",
+ (unsigned long) map->pr_vaddr,
+ (unsigned long) map->pr_vaddr + map->pr_size - 1,
+ (unsigned long) map->pr_size,
+ pr_off,
+ mappingflags (map->pr_mflags));
return 0;
}
-/*
- * Function: info_proc_mappings
- *
- * Implement the "info proc mappings" subcommand.
- */
+/* Implement the "info proc mappings" subcommand. */
static void
info_proc_mappings (procinfo *pi, int summary)
{
- char *header_fmt_string;
-
- if (TARGET_PTR_BIT == 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");
+ return; /* No output for summary mode. */
+
+ printf_filtered (_("Mapped address spaces:\n\n"));
+ if (gdbarch_ptr_bit (target_gdbarch) == 32)
+ printf_filtered ("\t%10s %10s %10s %10s %7s\n",
+ "Start Addr",
+ " End Addr",
+ " Size",
+ " Offset",
+ "Flags");
+ else
+ printf_filtered (" %18s %18s %10s %10s %7s\n",
+ "Start Addr",
+ " End Addr",
+ " Size",
+ " Offset",
+ "Flags");
iterate_over_mappings (pi, NULL, NULL, info_mappings_callback);
printf_filtered ("\n");
}
-/*
- * Function: info_proc_cmd
- *
- * Implement the "info proc" command.
- */
+/* Implement the "info proc" command. */
static void
info_proc_cmd (char *args, int from_tty)
old_chain = make_cleanup (null_cleanup, 0);
if (args)
{
- if ((argv = buildargv (args)) == NULL)
- nomem (0);
- else
- make_cleanup_freeargv (argv);
+ argv = gdb_buildargv (args);
+ make_cleanup_freeargv (argv);
}
while (argv != NULL && *argv != NULL)
{
if (pid == 0)
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.
- First see if it's a process we're already debugging. */
+ First see if it's a process we're already debugging. */
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 (do_destroy_procinfo_cleanup, process);
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);
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_1 (procinfo *pi, int syscallnum, int entry_or_exit,
+ int mode, int from_tty)
+{
+ sysset_t *sysset;
+
+ if (entry_or_exit == PR_SYSENTRY)
+ sysset = proc_get_traced_sysentry (pi, NULL);
+ else
+ sysset = proc_get_traced_sysexit (pi, NULL);
+
+ if (sysset == NULL)
+ proc_error (pi, "proc-trace, get_traced_sysset", __LINE__);
+
+ if (mode == FLAG_SET)
+ gdb_praddsysset (sysset, syscallnum);
+ else
+ gdb_prdelsysset (sysset, syscallnum);
+
+ 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__);
+ }
+}
+
static void
proc_trace_syscalls (char *args, int from_tty, int entry_or_exit, int mode)
{
procinfo *pi;
- sysset_t *sysset;
- int syscallnum = 0;
if (PIDGET (inferior_ptid) <= 0)
- error ("you must be debugging a process to use this command.");
+ error (_("you must be debugging a process to use this command."));
if (args == NULL || args[0] == 0)
- error_no_arg ("system call to trace");
+ error_no_arg (_("system call to trace"));
pi = find_procinfo_or_die (PIDGET (inferior_ptid), 0);
if (isdigit (args[0]))
{
- 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 (sysset == NULL)
- proc_error (pi, "proc-trace, get_traced_sysset", __LINE__);
+ const int syscallnum = atoi (args);
- if (mode == FLAG_SET)
- gdb_praddsysset (sysset, syscallnum);
- else
- gdb_prdelsysset (sysset, syscallnum);
-
- 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__);
- }
+ proc_trace_syscalls_1 (pi, syscallnum, entry_or_exit, mode, from_tty);
}
}
-static void
+static void
proc_trace_sysentry_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_SET);
}
-static void
+static void
proc_trace_sysexit_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_SET);
}
-static void
+static void
proc_untrace_sysentry_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSENTRY, FLAG_RESET);
}
-static void
+static void
proc_untrace_sysexit_cmd (char *args, int from_tty)
{
proc_trace_syscalls (args, from_tty, PR_SYSEXIT, FLAG_RESET);
void
_initialize_procfs (void)
{
- init_procfs_ops ();
- add_target (&procfs_ops);
- add_info ("proc", info_proc_cmd,
- "Show /proc process information about any running process.\n\
+ observer_attach_inferior_created (procfs_inferior_created);
+
+ add_info ("proc", info_proc_cmd, _("\
+Show /proc process information about any running process.\n\
Specify process id, or use the program being debugged by default.\n\
-Specify keyword 'mappings' for detailed info on memory mappings.");
- add_com ("proc-trace-entry", no_class, proc_trace_sysentry_cmd,
- "Give a trace of entries into the syscall.");
- add_com ("proc-trace-exit", no_class, proc_trace_sysexit_cmd,
- "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.");
+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" =================== */
-/* miscellaneous stubs: */
-/* The following satisfy a few random symbols mostly created by */
-/* the solaris threads implementation, which I will chase down */
-/* later. */
+/* miscellaneous stubs: */
+
+/* The following satisfy a few random symbols mostly created by the
+ solaris threads implementation, which I will chase down later. */
-/*
- * Return a pid for which we guarantee
- * we will be able to find a 'live' procinfo.
- */
+/* Return a pid for which we guarantee we will be able to find a
+ 'live' procinfo. */
ptid_t
procfs_first_available (void)
/* 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)
+procfs_do_thread_registers (bfd *obfd, ptid_t ptid,
+ char *note_data, int *note_size,
+ enum target_signal stop_signal)
{
+ struct regcache *regcache = get_thread_regcache (ptid);
gdb_gregset_t gregs;
gdb_fpregset_t fpregs;
unsigned long merged_pid;
+ struct cleanup *old_chain;
merged_pid = TIDGET (ptid) << 16 | PIDGET (ptid);
- fill_gregset (&gregs, -1);
-#if defined (UNIXWARE)
+ /* This part is the old method for fetching registers.
+ It should be replaced by the newer one using regsets
+ once it is implemented in this platform:
+ gdbarch_regset_from_core_section() and regset->collect_regset(). */
+
+ old_chain = save_inferior_ptid ();
+ inferior_ptid = ptid;
+ target_fetch_registers (regcache, -1);
+
+ fill_gregset (regcache, &gregs, -1);
+#if defined (NEW_PROC_API)
note_data = (char *) elfcore_write_lwpstatus (obfd,
note_data,
note_size,
- merged_pid,
+ merged_pid,
stop_signal,
&gregs);
#else
note_data = (char *) elfcore_write_prstatus (obfd,
note_data,
note_size,
- merged_pid,
+ merged_pid,
stop_signal,
&gregs);
#endif
- fill_fpregset (&fpregs, -1);
+ fill_fpregset (regcache, &fpregs, -1);
note_data = (char *) elfcore_write_prfpreg (obfd,
note_data,
note_size,
&fpregs,
sizeof (fpregs));
+
+ do_cleanups (old_chain);
+
return note_data;
}
bfd *obfd;
char *note_data;
int *note_size;
+ enum target_signal stop_signal;
};
static int
{
struct procfs_corefile_thread_data *args = data;
- if (pi != NULL && thread->tid != 0)
+ if (pi != NULL)
{
- ptid_t saved_ptid = inferior_ptid;
- inferior_ptid = MERGEPID (pi->pid, thread->tid);
- args->note_data = procfs_do_thread_registers (args->obfd, inferior_ptid,
- args->note_data,
- args->note_size);
- inferior_ptid = saved_ptid;
+ ptid_t ptid = MERGEPID (pi->pid, thread->tid);
+
+ args->note_data = procfs_do_thread_registers (args->obfd, ptid,
+ args->note_data,
+ args->note_size,
+ args->stop_signal);
}
return 0;
}
+static int
+find_signalled_thread (struct thread_info *info, void *data)
+{
+ if (info->suspend.stop_signal != TARGET_SIGNAL_0
+ && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid))
+ return 1;
+
+ return 0;
+}
+
+static enum target_signal
+find_stop_signal (void)
+{
+ struct thread_info *info =
+ iterate_over_threads (find_signalled_thread, NULL);
+
+ if (info)
+ return info->suspend.stop_signal;
+ else
+ return TARGET_SIGNAL_0;
+}
+
static char *
procfs_make_note_section (bfd *obfd, int *note_size)
{
char *note_data = NULL;
char *inf_args;
struct procfs_corefile_thread_data thread_args;
+ gdb_byte *auxv;
+ int auxv_len;
+ enum target_signal stop_signal;
if (get_exec_file (0))
{
- strncpy (fname, strrchr (get_exec_file (0), '/') + 1, sizeof (fname));
- strncpy (psargs, get_exec_file (0),
+ strncpy (fname, lbasename (get_exec_file (0)), 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, " ",
+ strncat (psargs, " ",
sizeof (psargs) - strlen (psargs));
- strncat (psargs, inf_args,
+ strncat (psargs, inf_args,
sizeof (psargs) - strlen (psargs));
}
}
- note_data = (char *) elfcore_write_prpsinfo (obfd,
- note_data,
- note_size,
- fname,
+ note_data = (char *) elfcore_write_prpsinfo (obfd,
+ note_data,
+ note_size,
+ fname,
psargs);
+ stop_signal = find_stop_signal ();
+
#ifdef UNIXWARE
- fill_gregset (&gregs, -1);
- note_data = elfcore_write_pstatus (obfd, note_data, note_size,
- PIDGET (inferior_ptid),
+ 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);
+ thread_args.stop_signal = stop_signal;
+ proc_iterate_over_threads (pi, procfs_corefile_thread_callback,
+ &thread_args);
- if (thread_args.note_data == note_data)
- {
- /* iterate_over_threads didn't come up with any threads;
- just use inferior_ptid. */
- note_data = procfs_do_thread_registers (obfd, inferior_ptid,
- note_data, note_size);
- }
- else
+ /* There should be always at least one thread. */
+ gdb_assert (thread_args.note_data != note_data);
+ note_data = thread_args.note_data;
+
+ auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV,
+ NULL, &auxv);
+ if (auxv_len > 0)
{
- note_data = thread_args.note_data;
+ note_data = elfcore_write_note (obfd, note_data, note_size,
+ "CORE", NT_AUXV, auxv, auxv_len);
+ xfree (auxv);
}
make_cleanup (xfree, note_data);
static char *
procfs_make_note_section (bfd *obfd, int *note_size)
{
- error ("gcore not implemented for this host.");
+ error (_("gcore not implemented for this host."));
return NULL; /* lint */
}
#endif /* Solaris or Unixware */
projects / deliverable / binutils-gdb.git / blobdiff