mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
7eb65fafed
target_have_continuable_watchpoint isn't used anywhere so remove it. The property isn't necessary because checking for "continuable" is the same as checking for "!steppable && !non-steppable". gdb/ChangeLog: 2018-08-31 Pedro Alves <palves@redhat.com> * nto-procfs.c (nto_procfs_target::have_continuable_watchpoint): Delete. * s390-linux-nat.c (s390_linux_nat_target::have_continuable_watchpoint): Delete. * target.h (target_ops::have_continuable_watchpoint): Delete. (target_have_continuable_watchpoint): Delete. * x86-nat.h (x86_nat_target::have_continuable_watchpoint): Delete. * target-delegates.c: Regenerate.
1616 lines
40 KiB
C
1616 lines
40 KiB
C
/* Machine independent support for QNX Neutrino /proc (process file system)
|
|
for GDB. Written by Colin Burgess at QNX Software Systems Limited.
|
|
|
|
Copyright (C) 2003-2018 Free Software Foundation, Inc.
|
|
|
|
Contributed by QNX Software Systems Ltd.
|
|
|
|
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 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.
|
|
|
|
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 <fcntl.h>
|
|
#include <spawn.h>
|
|
#include <sys/debug.h>
|
|
#include <sys/procfs.h>
|
|
#include <sys/neutrino.h>
|
|
#include <sys/syspage.h>
|
|
#include <dirent.h>
|
|
#include <sys/netmgr.h>
|
|
#include <sys/auxv.h>
|
|
|
|
#include "gdbcore.h"
|
|
#include "inferior.h"
|
|
#include "target.h"
|
|
#include "objfiles.h"
|
|
#include "gdbthread.h"
|
|
#include "nto-tdep.h"
|
|
#include "command.h"
|
|
#include "regcache.h"
|
|
#include "solib.h"
|
|
#include "inf-child.h"
|
|
#include "common/filestuff.h"
|
|
#include "common/scoped_fd.h"
|
|
|
|
#define NULL_PID 0
|
|
#define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\
|
|
_DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY)
|
|
|
|
int ctl_fd;
|
|
|
|
static sighandler_t ofunc;
|
|
|
|
static procfs_run run;
|
|
|
|
/* Create the "native" and "procfs" targets. */
|
|
|
|
struct nto_procfs_target : public inf_child_target
|
|
{
|
|
void open (const char *arg, int from_tty) override;
|
|
|
|
void attach (const char *, int) override = 0;
|
|
|
|
void post_attach (int);
|
|
|
|
void detach (inferior *, int) override;
|
|
|
|
void resume (ptid_t, int, enum gdb_signal) override;
|
|
|
|
ptid_t wait (ptid_t, struct target_waitstatus *, int) override;
|
|
|
|
void fetch_registers (struct regcache *, int) override;
|
|
void store_registers (struct regcache *, int) override;
|
|
|
|
enum target_xfer_status xfer_partial (enum target_object object,
|
|
const char *annex,
|
|
gdb_byte *readbuf,
|
|
const gdb_byte *writebuf,
|
|
ULONGEST offset, ULONGEST len,
|
|
ULONGEST *xfered_len) override;
|
|
|
|
void files_info () override;
|
|
|
|
int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override;
|
|
|
|
int remove_breakpoint (struct gdbarch *, struct bp_target_info *,
|
|
enum remove_bp_reason) override;
|
|
|
|
int can_use_hw_breakpoint (enum bptype, int, int) override;
|
|
|
|
int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override;
|
|
|
|
int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override;
|
|
|
|
int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
|
|
struct expression *) override;
|
|
|
|
int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type,
|
|
struct expression *) override;
|
|
|
|
bool stopped_by_watchpoint () override;
|
|
|
|
void kill () override;
|
|
|
|
void create_inferior (const char *, const std::string &,
|
|
char **, int) override;
|
|
|
|
void mourn_inferior () override;
|
|
|
|
void pass_signals (int, unsigned char *) override;
|
|
|
|
bool thread_alive (ptid_t ptid) override;
|
|
|
|
void update_thread_list () override;
|
|
|
|
const char *pid_to_str (ptid_t) override;
|
|
|
|
void interrupt () override;
|
|
|
|
const char *extra_thread_info (struct thread_info *) override;
|
|
|
|
char *pid_to_exec_file (int pid) override;
|
|
};
|
|
|
|
/* For "target native". */
|
|
|
|
static const target_info nto_native_target_info = {
|
|
"native",
|
|
N_("QNX Neutrino local process"),
|
|
N_("QNX Neutrino local process (started by the \"run\" command).")
|
|
};
|
|
|
|
class nto_procfs_target_native final : public nto_procfs_target
|
|
{
|
|
const target_info &info () const override
|
|
{ return nto_native_target_info; }
|
|
};
|
|
|
|
/* For "target procfs <node>". */
|
|
|
|
static const target_info nto_procfs_target_info = {
|
|
"procfs",
|
|
N_("QNX Neutrino local or remote process"),
|
|
N_("QNX Neutrino process. target procfs <node>")
|
|
};
|
|
|
|
struct nto_procfs_target_procfs final : public nto_procfs_target
|
|
{
|
|
const target_info &info () const override
|
|
{ return nto_procfs_target_info; }
|
|
};
|
|
|
|
static ptid_t do_attach (ptid_t ptid);
|
|
|
|
/* These two globals are only ever set in procfs_open_1, but are
|
|
referenced elsewhere. 'nto_procfs_node' is a flag used to say
|
|
whether we are local, or we should get the current node descriptor
|
|
for the remote QNX node. */
|
|
static char *nodestr;
|
|
static unsigned nto_procfs_node = ND_LOCAL_NODE;
|
|
|
|
/* Return the current QNX Node, or error out. This is a simple
|
|
wrapper for the netmgr_strtond() function. The reason this
|
|
is required is because QNX node descriptors are transient so
|
|
we have to re-acquire them every time. */
|
|
static unsigned
|
|
nto_node (void)
|
|
{
|
|
unsigned node;
|
|
|
|
if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0
|
|
|| nodestr == NULL)
|
|
return ND_LOCAL_NODE;
|
|
|
|
node = netmgr_strtond (nodestr, 0);
|
|
if (node == -1)
|
|
error (_("Lost the QNX node. Debug session probably over."));
|
|
|
|
return (node);
|
|
}
|
|
|
|
static enum gdb_osabi
|
|
procfs_is_nto_target (bfd *abfd)
|
|
{
|
|
return GDB_OSABI_QNXNTO;
|
|
}
|
|
|
|
/* This is called when we call 'target native' or 'target procfs
|
|
<arg>' from the (gdb) prompt. For QNX6 (nto), the only valid arg
|
|
will be a QNX node string, eg: "/net/some_node". If arg is not a
|
|
valid QNX node, we will default to local. */
|
|
void
|
|
nto_procfs_target::open (const char *arg, int from_tty)
|
|
{
|
|
char *endstr;
|
|
char buffer[50];
|
|
int total_size;
|
|
procfs_sysinfo *sysinfo;
|
|
char nto_procfs_path[PATH_MAX];
|
|
|
|
/* Offer to kill previous inferiors before opening this target. */
|
|
target_preopen (from_tty);
|
|
|
|
nto_is_nto_target = procfs_is_nto_target;
|
|
|
|
/* Set the default node used for spawning to this one,
|
|
and only override it if there is a valid arg. */
|
|
|
|
xfree (nodestr);
|
|
nodestr = NULL;
|
|
|
|
nto_procfs_node = ND_LOCAL_NODE;
|
|
nodestr = (arg != NULL) ? xstrdup (arg) : NULL;
|
|
|
|
init_thread_list ();
|
|
|
|
if (nodestr)
|
|
{
|
|
nto_procfs_node = netmgr_strtond (nodestr, &endstr);
|
|
if (nto_procfs_node == -1)
|
|
{
|
|
if (errno == ENOTSUP)
|
|
printf_filtered ("QNX Net Manager not found.\n");
|
|
printf_filtered ("Invalid QNX node %s: error %d (%s).\n", nodestr,
|
|
errno, safe_strerror (errno));
|
|
xfree (nodestr);
|
|
nodestr = NULL;
|
|
nto_procfs_node = ND_LOCAL_NODE;
|
|
}
|
|
else if (*endstr)
|
|
{
|
|
if (*(endstr - 1) == '/')
|
|
*(endstr - 1) = 0;
|
|
else
|
|
*endstr = 0;
|
|
}
|
|
}
|
|
snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s",
|
|
(nodestr != NULL) ? nodestr : "", "/proc");
|
|
|
|
scoped_fd fd (open (nto_procfs_path, O_RDONLY));
|
|
if (fd.get () == -1)
|
|
{
|
|
printf_filtered ("Error opening %s : %d (%s)\n", nto_procfs_path, errno,
|
|
safe_strerror (errno));
|
|
error (_("Invalid procfs arg"));
|
|
}
|
|
|
|
sysinfo = (void *) buffer;
|
|
if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK)
|
|
{
|
|
printf_filtered ("Error getting size: %d (%s)\n", errno,
|
|
safe_strerror (errno));
|
|
error (_("Devctl failed."));
|
|
}
|
|
else
|
|
{
|
|
total_size = sysinfo->total_size;
|
|
sysinfo = alloca (total_size);
|
|
if (sysinfo == NULL)
|
|
{
|
|
printf_filtered ("Memory error: %d (%s)\n", errno,
|
|
safe_strerror (errno));
|
|
error (_("alloca failed."));
|
|
}
|
|
else
|
|
{
|
|
if (devctl (fd.get (), DCMD_PROC_SYSINFO, sysinfo, total_size, 0)
|
|
!= EOK)
|
|
{
|
|
printf_filtered ("Error getting sysinfo: %d (%s)\n", errno,
|
|
safe_strerror (errno));
|
|
error (_("Devctl failed."));
|
|
}
|
|
else
|
|
{
|
|
if (sysinfo->type !=
|
|
nto_map_arch_to_cputype (gdbarch_bfd_arch_info
|
|
(target_gdbarch ())->arch_name))
|
|
error (_("Invalid target CPU."));
|
|
}
|
|
}
|
|
}
|
|
|
|
inf_child_target::open (arg, from_tty);
|
|
printf_filtered ("Debugging using %s\n", nto_procfs_path);
|
|
}
|
|
|
|
static void
|
|
procfs_set_thread (ptid_t ptid)
|
|
{
|
|
pid_t tid;
|
|
|
|
tid = ptid.tid ();
|
|
devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0);
|
|
}
|
|
|
|
/* Return true if the thread TH is still alive. */
|
|
|
|
bool
|
|
nto_procfs_target::thread_alive (ptid_t ptid)
|
|
{
|
|
pid_t tid;
|
|
pid_t pid;
|
|
procfs_status status;
|
|
int err;
|
|
|
|
tid = ptid.tid ();
|
|
pid = ptid.pid ();
|
|
|
|
if (kill (pid, 0) == -1)
|
|
return false;
|
|
|
|
status.tid = tid;
|
|
if ((err = devctl (ctl_fd, DCMD_PROC_TIDSTATUS,
|
|
&status, sizeof (status), 0)) != EOK)
|
|
return false;
|
|
|
|
/* Thread is alive or dead but not yet joined,
|
|
or dead and there is an alive (or dead unjoined) thread with
|
|
higher tid.
|
|
|
|
If the tid is not the same as requested, requested tid is dead. */
|
|
return (status.tid == tid) && (status.state != STATE_DEAD);
|
|
}
|
|
|
|
static void
|
|
update_thread_private_data_name (struct thread_info *new_thread,
|
|
const char *newname)
|
|
{
|
|
nto_thread_info *pti = get_nto_thread_info (new_thread);
|
|
|
|
gdb_assert (newname != NULL);
|
|
gdb_assert (new_thread != NULL);
|
|
|
|
if (pti)
|
|
{
|
|
pti = new nto_thread_info;
|
|
new_thread->priv.reset (pti);
|
|
}
|
|
|
|
pti->name = newname;
|
|
}
|
|
|
|
static void
|
|
update_thread_private_data (struct thread_info *new_thread,
|
|
pthread_t tid, int state, int flags)
|
|
{
|
|
procfs_info pidinfo;
|
|
struct _thread_name *tn;
|
|
procfs_threadctl tctl;
|
|
|
|
#if _NTO_VERSION > 630
|
|
gdb_assert (new_thread != NULL);
|
|
|
|
if (devctl (ctl_fd, DCMD_PROC_INFO, &pidinfo,
|
|
sizeof(pidinfo), 0) != EOK)
|
|
return;
|
|
|
|
memset (&tctl, 0, sizeof (tctl));
|
|
tctl.cmd = _NTO_TCTL_NAME;
|
|
tn = (struct _thread_name *) (&tctl.data);
|
|
|
|
/* Fetch name for the given thread. */
|
|
tctl.tid = tid;
|
|
tn->name_buf_len = sizeof (tctl.data) - sizeof (*tn);
|
|
tn->new_name_len = -1; /* Getting, not setting. */
|
|
if (devctl (ctl_fd, DCMD_PROC_THREADCTL, &tctl, sizeof (tctl), NULL) != EOK)
|
|
tn->name_buf[0] = '\0';
|
|
|
|
tn->name_buf[_NTO_THREAD_NAME_MAX] = '\0';
|
|
|
|
update_thread_private_data_name (new_thread, tn->name_buf);
|
|
|
|
nto_thread_info *pti = get_nto_thread_info (new_thread);
|
|
pti->tid = tid;
|
|
pti->state = state;
|
|
pti->flags = flags;
|
|
#endif /* _NTO_VERSION */
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::update_thread_list ()
|
|
{
|
|
procfs_status status;
|
|
pid_t pid;
|
|
ptid_t ptid;
|
|
pthread_t tid;
|
|
struct thread_info *new_thread;
|
|
|
|
if (ctl_fd == -1)
|
|
return;
|
|
|
|
prune_threads ();
|
|
|
|
pid = inferior_ptid.pid ();
|
|
|
|
status.tid = 1;
|
|
|
|
for (tid = 1;; ++tid)
|
|
{
|
|
if (status.tid == tid
|
|
&& (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0)
|
|
!= EOK))
|
|
break;
|
|
if (status.tid != tid)
|
|
/* The reason why this would not be equal is that devctl might have
|
|
returned different tid, meaning the requested tid no longer exists
|
|
(e.g. thread exited). */
|
|
continue;
|
|
ptid = ptid_t (pid, 0, tid);
|
|
new_thread = find_thread_ptid (ptid);
|
|
if (!new_thread)
|
|
new_thread = add_thread (ptid);
|
|
update_thread_private_data (new_thread, tid, status.state, 0);
|
|
status.tid++;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void
|
|
procfs_pidlist (const char *args, int from_tty)
|
|
{
|
|
struct dirent *dirp = NULL;
|
|
char buf[PATH_MAX];
|
|
procfs_info *pidinfo = NULL;
|
|
procfs_debuginfo *info = NULL;
|
|
procfs_status *status = NULL;
|
|
pid_t num_threads = 0;
|
|
pid_t pid;
|
|
char name[512];
|
|
char procfs_dir[PATH_MAX];
|
|
|
|
snprintf (procfs_dir, sizeof (procfs_dir), "%s%s",
|
|
(nodestr != NULL) ? nodestr : "", "/proc");
|
|
|
|
gdb_dir_up dp (opendir (procfs_dir));
|
|
if (dp == NULL)
|
|
{
|
|
fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)",
|
|
procfs_dir, errno, safe_strerror (errno));
|
|
return;
|
|
}
|
|
|
|
/* Start scan at first pid. */
|
|
rewinddir (dp.get ());
|
|
|
|
do
|
|
{
|
|
/* Get the right pid and procfs path for the pid. */
|
|
do
|
|
{
|
|
dirp = readdir (dp.get ());
|
|
if (dirp == NULL)
|
|
return;
|
|
snprintf (buf, sizeof (buf), "%s%s/%s/as",
|
|
(nodestr != NULL) ? nodestr : "",
|
|
"/proc", dirp->d_name);
|
|
pid = atoi (dirp->d_name);
|
|
}
|
|
while (pid == 0);
|
|
|
|
/* Open the procfs path. */
|
|
scoped_fd fd (open (buf, O_RDONLY));
|
|
if (fd.get () == -1)
|
|
{
|
|
fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n",
|
|
buf, errno, safe_strerror (errno));
|
|
continue;
|
|
}
|
|
|
|
pidinfo = (procfs_info *) buf;
|
|
if (devctl (fd.get (), DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK)
|
|
{
|
|
fprintf_unfiltered (gdb_stderr,
|
|
"devctl DCMD_PROC_INFO failed - %d (%s)\n",
|
|
errno, safe_strerror (errno));
|
|
break;
|
|
}
|
|
num_threads = pidinfo->num_threads;
|
|
|
|
info = (procfs_debuginfo *) buf;
|
|
if (devctl (fd.get (), DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0)
|
|
!= EOK)
|
|
strcpy (name, "unavailable");
|
|
else
|
|
strcpy (name, info->path);
|
|
|
|
/* Collect state info on all the threads. */
|
|
status = (procfs_status *) buf;
|
|
for (status->tid = 1; status->tid <= num_threads; status->tid++)
|
|
{
|
|
const int err
|
|
= devctl (fd.get (), DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0);
|
|
printf_filtered ("%s - %d", name, pid);
|
|
if (err == EOK && status->tid != 0)
|
|
printf_filtered ("/%d\n", status->tid);
|
|
else
|
|
{
|
|
printf_filtered ("\n");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
while (dirp != NULL);
|
|
}
|
|
|
|
static void
|
|
procfs_meminfo (const char *args, int from_tty)
|
|
{
|
|
procfs_mapinfo *mapinfos = NULL;
|
|
static int num_mapinfos = 0;
|
|
procfs_mapinfo *mapinfo_p, *mapinfo_p2;
|
|
int flags = ~0, err, num, i, j;
|
|
|
|
struct
|
|
{
|
|
procfs_debuginfo info;
|
|
char buff[_POSIX_PATH_MAX];
|
|
} map;
|
|
|
|
struct info
|
|
{
|
|
unsigned addr;
|
|
unsigned size;
|
|
unsigned flags;
|
|
unsigned debug_vaddr;
|
|
unsigned long long offset;
|
|
};
|
|
|
|
struct printinfo
|
|
{
|
|
unsigned long long ino;
|
|
unsigned dev;
|
|
struct info text;
|
|
struct info data;
|
|
char name[256];
|
|
} printme;
|
|
|
|
/* Get the number of map entrys. */
|
|
err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num);
|
|
if (err != EOK)
|
|
{
|
|
printf ("failed devctl num mapinfos - %d (%s)\n", err,
|
|
safe_strerror (err));
|
|
return;
|
|
}
|
|
|
|
mapinfos = XNEWVEC (procfs_mapinfo, num);
|
|
|
|
num_mapinfos = num;
|
|
mapinfo_p = mapinfos;
|
|
|
|
/* Fill the map entrys. */
|
|
err = devctl (ctl_fd, DCMD_PROC_MAPINFO, mapinfo_p, num
|
|
* sizeof (procfs_mapinfo), &num);
|
|
if (err != EOK)
|
|
{
|
|
printf ("failed devctl mapinfos - %d (%s)\n", err, safe_strerror (err));
|
|
xfree (mapinfos);
|
|
return;
|
|
}
|
|
|
|
num = std::min (num, num_mapinfos);
|
|
|
|
/* Run through the list of mapinfos, and store the data and text info
|
|
so we can print it at the bottom of the loop. */
|
|
for (mapinfo_p = mapinfos, i = 0; i < num; i++, mapinfo_p++)
|
|
{
|
|
if (!(mapinfo_p->flags & flags))
|
|
mapinfo_p->ino = 0;
|
|
|
|
if (mapinfo_p->ino == 0) /* Already visited. */
|
|
continue;
|
|
|
|
map.info.vaddr = mapinfo_p->vaddr;
|
|
|
|
err = devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0);
|
|
if (err != EOK)
|
|
continue;
|
|
|
|
memset (&printme, 0, sizeof printme);
|
|
printme.dev = mapinfo_p->dev;
|
|
printme.ino = mapinfo_p->ino;
|
|
printme.text.addr = mapinfo_p->vaddr;
|
|
printme.text.size = mapinfo_p->size;
|
|
printme.text.flags = mapinfo_p->flags;
|
|
printme.text.offset = mapinfo_p->offset;
|
|
printme.text.debug_vaddr = map.info.vaddr;
|
|
strcpy (printme.name, map.info.path);
|
|
|
|
/* Check for matching data. */
|
|
for (mapinfo_p2 = mapinfos, j = 0; j < num; j++, mapinfo_p2++)
|
|
{
|
|
if (mapinfo_p2->vaddr != mapinfo_p->vaddr
|
|
&& mapinfo_p2->ino == mapinfo_p->ino
|
|
&& mapinfo_p2->dev == mapinfo_p->dev)
|
|
{
|
|
map.info.vaddr = mapinfo_p2->vaddr;
|
|
err =
|
|
devctl (ctl_fd, DCMD_PROC_MAPDEBUG, &map, sizeof (map), 0);
|
|
if (err != EOK)
|
|
continue;
|
|
|
|
if (strcmp (map.info.path, printme.name))
|
|
continue;
|
|
|
|
/* Lower debug_vaddr is always text, if nessessary, swap. */
|
|
if ((int) map.info.vaddr < (int) printme.text.debug_vaddr)
|
|
{
|
|
memcpy (&(printme.data), &(printme.text),
|
|
sizeof (printme.data));
|
|
printme.text.addr = mapinfo_p2->vaddr;
|
|
printme.text.size = mapinfo_p2->size;
|
|
printme.text.flags = mapinfo_p2->flags;
|
|
printme.text.offset = mapinfo_p2->offset;
|
|
printme.text.debug_vaddr = map.info.vaddr;
|
|
}
|
|
else
|
|
{
|
|
printme.data.addr = mapinfo_p2->vaddr;
|
|
printme.data.size = mapinfo_p2->size;
|
|
printme.data.flags = mapinfo_p2->flags;
|
|
printme.data.offset = mapinfo_p2->offset;
|
|
printme.data.debug_vaddr = map.info.vaddr;
|
|
}
|
|
mapinfo_p2->ino = 0;
|
|
}
|
|
}
|
|
mapinfo_p->ino = 0;
|
|
|
|
printf_filtered ("%s\n", printme.name);
|
|
printf_filtered ("\ttext=%08x bytes @ 0x%08x\n", printme.text.size,
|
|
printme.text.addr);
|
|
printf_filtered ("\t\tflags=%08x\n", printme.text.flags);
|
|
printf_filtered ("\t\tdebug=%08x\n", printme.text.debug_vaddr);
|
|
printf_filtered ("\t\toffset=%s\n", phex (printme.text.offset, 8));
|
|
if (printme.data.size)
|
|
{
|
|
printf_filtered ("\tdata=%08x bytes @ 0x%08x\n", printme.data.size,
|
|
printme.data.addr);
|
|
printf_filtered ("\t\tflags=%08x\n", printme.data.flags);
|
|
printf_filtered ("\t\tdebug=%08x\n", printme.data.debug_vaddr);
|
|
printf_filtered ("\t\toffset=%s\n", phex (printme.data.offset, 8));
|
|
}
|
|
printf_filtered ("\tdev=0x%x\n", printme.dev);
|
|
printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino);
|
|
}
|
|
xfree (mapinfos);
|
|
return;
|
|
}
|
|
|
|
/* Print status information about what we're accessing. */
|
|
void
|
|
nto_procfs_target::files_info ()
|
|
{
|
|
struct inferior *inf = current_inferior ();
|
|
|
|
printf_unfiltered ("\tUsing the running image of %s %s via %s.\n",
|
|
inf->attach_flag ? "attached" : "child",
|
|
target_pid_to_str (inferior_ptid),
|
|
(nodestr != NULL) ? nodestr : "local node");
|
|
}
|
|
|
|
/* Target to_pid_to_exec_file implementation. */
|
|
|
|
char *
|
|
nto_procfs_target::pid_to_exec_file (const int pid)
|
|
{
|
|
int proc_fd;
|
|
static char proc_path[PATH_MAX];
|
|
ssize_t rd;
|
|
|
|
/* Read exe file name. */
|
|
snprintf (proc_path, sizeof (proc_path), "%s/proc/%d/exefile",
|
|
(nodestr != NULL) ? nodestr : "", pid);
|
|
proc_fd = open (proc_path, O_RDONLY);
|
|
if (proc_fd == -1)
|
|
return NULL;
|
|
|
|
rd = read (proc_fd, proc_path, sizeof (proc_path) - 1);
|
|
close (proc_fd);
|
|
if (rd <= 0)
|
|
{
|
|
proc_path[0] = '\0';
|
|
return NULL;
|
|
}
|
|
proc_path[rd] = '\0';
|
|
return proc_path;
|
|
}
|
|
|
|
/* Attach to process PID, then initialize for debugging it. */
|
|
void
|
|
nto_procfs_target::attach (const char *args, int from_tty)
|
|
{
|
|
char *exec_file;
|
|
int pid;
|
|
struct inferior *inf;
|
|
|
|
pid = parse_pid_to_attach (args);
|
|
|
|
if (pid == getpid ())
|
|
error (_("Attaching GDB to itself is not a good idea..."));
|
|
|
|
if (from_tty)
|
|
{
|
|
exec_file = (char *) get_exec_file (0);
|
|
|
|
if (exec_file)
|
|
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file,
|
|
target_pid_to_str (ptid_t (pid)));
|
|
else
|
|
printf_unfiltered ("Attaching to %s\n",
|
|
target_pid_to_str (ptid_t (pid)));
|
|
|
|
gdb_flush (gdb_stdout);
|
|
}
|
|
inferior_ptid = do_attach (ptid_t (pid));
|
|
inf = current_inferior ();
|
|
inferior_appeared (inf, pid);
|
|
inf->attach_flag = 1;
|
|
|
|
if (!target_is_pushed (ops))
|
|
push_target (ops);
|
|
|
|
procfs_update_thread_list (ops);
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::post_attach (pid_t pid)
|
|
{
|
|
if (exec_bfd)
|
|
solib_create_inferior_hook (0);
|
|
}
|
|
|
|
static ptid_t
|
|
do_attach (ptid_t ptid)
|
|
{
|
|
procfs_status status;
|
|
struct sigevent event;
|
|
char path[PATH_MAX];
|
|
|
|
snprintf (path, PATH_MAX - 1, "%s%s/%d/as",
|
|
(nodestr != NULL) ? nodestr : "", "/proc", ptid.pid ());
|
|
ctl_fd = open (path, O_RDWR);
|
|
if (ctl_fd == -1)
|
|
error (_("Couldn't open proc file %s, error %d (%s)"), path, errno,
|
|
safe_strerror (errno));
|
|
if (devctl (ctl_fd, DCMD_PROC_STOP, &status, sizeof (status), 0) != EOK)
|
|
error (_("Couldn't stop process"));
|
|
|
|
/* Define a sigevent for process stopped notification. */
|
|
event.sigev_notify = SIGEV_SIGNAL_THREAD;
|
|
event.sigev_signo = SIGUSR1;
|
|
event.sigev_code = 0;
|
|
event.sigev_value.sival_ptr = NULL;
|
|
event.sigev_priority = -1;
|
|
devctl (ctl_fd, DCMD_PROC_EVENT, &event, sizeof (event), 0);
|
|
|
|
if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK
|
|
&& status.flags & _DEBUG_FLAG_STOPPED)
|
|
SignalKill (nto_node (), ptid.pid (), 0, SIGCONT, 0, 0);
|
|
nto_init_solib_absolute_prefix ();
|
|
return ptid_t (ptid.pid (), 0, status.tid);
|
|
}
|
|
|
|
/* Ask the user what to do when an interrupt is received. */
|
|
static void
|
|
interrupt_query (void)
|
|
{
|
|
if (query (_("Interrupted while waiting for the program.\n\
|
|
Give up (and stop debugging it)? ")))
|
|
{
|
|
target_mourn_inferior (inferior_ptid);
|
|
quit ();
|
|
}
|
|
}
|
|
|
|
/* The user typed ^C twice. */
|
|
static void
|
|
nto_handle_sigint_twice (int signo)
|
|
{
|
|
signal (signo, ofunc);
|
|
interrupt_query ();
|
|
signal (signo, nto_handle_sigint_twice);
|
|
}
|
|
|
|
static void
|
|
nto_handle_sigint (int signo)
|
|
{
|
|
/* If this doesn't work, try more severe steps. */
|
|
signal (signo, nto_handle_sigint_twice);
|
|
|
|
target_interrupt ();
|
|
}
|
|
|
|
sptid_t
|
|
nto_procfs_target::wait (ptid_t ptid, struct target_waitstatus *ourstatus,
|
|
int options)
|
|
{
|
|
sigset_t set;
|
|
siginfo_t info;
|
|
procfs_status status;
|
|
static int exit_signo = 0; /* To track signals that cause termination. */
|
|
|
|
ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
|
|
|
|
if (inferior_ptid == null_ptid)
|
|
{
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
ourstatus->value.sig = GDB_SIGNAL_0;
|
|
exit_signo = 0;
|
|
return null_ptid;
|
|
}
|
|
|
|
sigemptyset (&set);
|
|
sigaddset (&set, SIGUSR1);
|
|
|
|
devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
|
|
while (!(status.flags & _DEBUG_FLAG_ISTOP))
|
|
{
|
|
ofunc = signal (SIGINT, nto_handle_sigint);
|
|
sigwaitinfo (&set, &info);
|
|
signal (SIGINT, ofunc);
|
|
devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
|
|
}
|
|
|
|
nto_inferior_data (NULL)->stopped_flags = status.flags;
|
|
nto_inferior_data (NULL)->stopped_pc = status.ip;
|
|
|
|
if (status.flags & _DEBUG_FLAG_SSTEP)
|
|
{
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
ourstatus->value.sig = GDB_SIGNAL_TRAP;
|
|
}
|
|
/* Was it a breakpoint? */
|
|
else if (status.flags & _DEBUG_FLAG_TRACE)
|
|
{
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
ourstatus->value.sig = GDB_SIGNAL_TRAP;
|
|
}
|
|
else if (status.flags & _DEBUG_FLAG_ISTOP)
|
|
{
|
|
switch (status.why)
|
|
{
|
|
case _DEBUG_WHY_SIGNALLED:
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
ourstatus->value.sig =
|
|
gdb_signal_from_host (status.info.si_signo);
|
|
exit_signo = 0;
|
|
break;
|
|
case _DEBUG_WHY_FAULTED:
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
if (status.info.si_signo == SIGTRAP)
|
|
{
|
|
ourstatus->value.sig = 0;
|
|
exit_signo = 0;
|
|
}
|
|
else
|
|
{
|
|
ourstatus->value.sig =
|
|
gdb_signal_from_host (status.info.si_signo);
|
|
exit_signo = ourstatus->value.sig;
|
|
}
|
|
break;
|
|
|
|
case _DEBUG_WHY_TERMINATED:
|
|
{
|
|
int waitval = 0;
|
|
|
|
waitpid (inferior_ptid.pid (), &waitval, WNOHANG);
|
|
if (exit_signo)
|
|
{
|
|
/* Abnormal death. */
|
|
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
|
|
ourstatus->value.sig = exit_signo;
|
|
}
|
|
else
|
|
{
|
|
/* Normal death. */
|
|
ourstatus->kind = TARGET_WAITKIND_EXITED;
|
|
ourstatus->value.integer = WEXITSTATUS (waitval);
|
|
}
|
|
exit_signo = 0;
|
|
break;
|
|
}
|
|
|
|
case _DEBUG_WHY_REQUESTED:
|
|
/* We are assuming a requested stop is due to a SIGINT. */
|
|
ourstatus->kind = TARGET_WAITKIND_STOPPED;
|
|
ourstatus->value.sig = GDB_SIGNAL_INT;
|
|
exit_signo = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ptid_t (status.pid, 0, status.tid);
|
|
}
|
|
|
|
/* Read the current values of the inferior's registers, both the
|
|
general register set and floating point registers (if supported)
|
|
and update gdb's idea of their current values. */
|
|
void
|
|
nto_procfs_target::fetch_registers (struct regcache *regcache, int regno)
|
|
{
|
|
union
|
|
{
|
|
procfs_greg greg;
|
|
procfs_fpreg fpreg;
|
|
procfs_altreg altreg;
|
|
}
|
|
reg;
|
|
int regsize;
|
|
|
|
procfs_set_thread (regcache->ptid ());
|
|
if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK)
|
|
nto_supply_gregset (regcache, (char *) ®.greg);
|
|
if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size)
|
|
== EOK)
|
|
nto_supply_fpregset (regcache, (char *) ®.fpreg);
|
|
if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size)
|
|
== EOK)
|
|
nto_supply_altregset (regcache, (char *) ®.altreg);
|
|
}
|
|
|
|
/* Helper for procfs_xfer_partial that handles memory transfers.
|
|
Arguments are like target_xfer_partial. */
|
|
|
|
static enum target_xfer_status
|
|
procfs_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf,
|
|
ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len)
|
|
{
|
|
int nbytes;
|
|
|
|
if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) != (off_t) memaddr)
|
|
return TARGET_XFER_E_IO;
|
|
|
|
if (writebuf != NULL)
|
|
nbytes = write (ctl_fd, writebuf, len);
|
|
else
|
|
nbytes = read (ctl_fd, readbuf, len);
|
|
if (nbytes <= 0)
|
|
return TARGET_XFER_E_IO;
|
|
*xfered_len = nbytes;
|
|
return TARGET_XFER_OK;
|
|
}
|
|
|
|
/* Target to_xfer_partial implementation. */
|
|
|
|
enum target_xfer_status
|
|
nto_procfs_target::xfer_partial (enum target_object object,
|
|
const char *annex, gdb_byte *readbuf,
|
|
const gdb_byte *writebuf, ULONGEST offset,
|
|
ULONGEST len, ULONGEST *xfered_len)
|
|
{
|
|
switch (object)
|
|
{
|
|
case TARGET_OBJECT_MEMORY:
|
|
return procfs_xfer_memory (readbuf, writebuf, offset, len, xfered_len);
|
|
case TARGET_OBJECT_AUXV:
|
|
if (readbuf != NULL)
|
|
{
|
|
int err;
|
|
CORE_ADDR initial_stack;
|
|
debug_process_t procinfo;
|
|
/* For 32-bit architecture, size of auxv_t is 8 bytes. */
|
|
const unsigned int sizeof_auxv_t = sizeof (auxv_t);
|
|
const unsigned int sizeof_tempbuf = 20 * sizeof_auxv_t;
|
|
int tempread;
|
|
gdb_byte *const tempbuf = alloca (sizeof_tempbuf);
|
|
|
|
if (tempbuf == NULL)
|
|
return TARGET_XFER_E_IO;
|
|
|
|
err = devctl (ctl_fd, DCMD_PROC_INFO, &procinfo,
|
|
sizeof procinfo, 0);
|
|
if (err != EOK)
|
|
return TARGET_XFER_E_IO;
|
|
|
|
initial_stack = procinfo.initial_stack;
|
|
|
|
/* procfs is always 'self-hosted', no byte-order manipulation. */
|
|
tempread = nto_read_auxv_from_initial_stack (initial_stack, tempbuf,
|
|
sizeof_tempbuf,
|
|
sizeof (auxv_t));
|
|
tempread = std::min (tempread, len) - offset;
|
|
memcpy (readbuf, tempbuf + offset, tempread);
|
|
*xfered_len = tempread;
|
|
return tempread ? TARGET_XFER_OK : TARGET_XFER_EOF;
|
|
}
|
|
/* Fallthru */
|
|
default:
|
|
return this->beneath ()->xfer_partial (object, annex,
|
|
readbuf, writebuf, offset, len,
|
|
xfered_len);
|
|
}
|
|
}
|
|
|
|
/* Take a program previously attached to and detaches it.
|
|
The program resumes execution and will no longer stop
|
|
on signals, etc. We'd better not have left any breakpoints
|
|
in the program or it'll die when it hits one. */
|
|
void
|
|
nto_procfs_target::detach (inferior *inf, int from_tty)
|
|
{
|
|
int pid;
|
|
|
|
target_announce_detach ();
|
|
|
|
if (siggnal)
|
|
SignalKill (nto_node (), inferior_ptid.pid (), 0, 0, 0, 0);
|
|
|
|
close (ctl_fd);
|
|
ctl_fd = -1;
|
|
|
|
pid = inferior_ptid.pid ();
|
|
inferior_ptid = null_ptid;
|
|
detach_inferior (pid);
|
|
init_thread_list ();
|
|
inf_child_maybe_unpush_target (ops);
|
|
}
|
|
|
|
static int
|
|
procfs_breakpoint (CORE_ADDR addr, int type, int size)
|
|
{
|
|
procfs_break brk;
|
|
|
|
brk.type = type;
|
|
brk.addr = addr;
|
|
brk.size = size;
|
|
errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0);
|
|
if (errno != EOK)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
nto_procfs_target::insert_breakpoint (struct gdbarch *gdbarch,
|
|
struct bp_target_info *bp_tgt)
|
|
{
|
|
bp_tgt->placed_address = bp_tgt->reqstd_address;
|
|
return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, 0);
|
|
}
|
|
|
|
int
|
|
nto_procfs_target::remove_breakpoint (struct gdbarch *gdbarch,
|
|
struct bp_target_info *bp_tgt,
|
|
enum remove_bp_reason reason)
|
|
{
|
|
return procfs_breakpoint (bp_tgt->placed_address, _DEBUG_BREAK_EXEC, -1);
|
|
}
|
|
|
|
int
|
|
nto_procfs_target::insert_hw_breakpoint (struct gdbarch *gdbarch,
|
|
struct bp_target_info *bp_tgt)
|
|
{
|
|
bp_tgt->placed_address = bp_tgt->reqstd_address;
|
|
return procfs_breakpoint (bp_tgt->placed_address,
|
|
_DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0);
|
|
}
|
|
|
|
int
|
|
nto_procfs_target::remove_hw_breakpoint (struct gdbarch *gdbarch,
|
|
struct bp_target_info *bp_tgt)
|
|
{
|
|
return procfs_breakpoint (bp_tgt->placed_address,
|
|
_DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1);
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::resume (ptid_t ptid, int step, enum gdb_signal signo)
|
|
{
|
|
int signal_to_pass;
|
|
procfs_status status;
|
|
sigset_t *run_fault = (sigset_t *) (void *) &run.fault;
|
|
|
|
if (inferior_ptid == null_ptid)
|
|
return;
|
|
|
|
procfs_set_thread (ptid == minus_one_ptid ? inferior_ptid :
|
|
ptid);
|
|
|
|
run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE;
|
|
if (step)
|
|
run.flags |= _DEBUG_RUN_STEP;
|
|
|
|
sigemptyset (run_fault);
|
|
sigaddset (run_fault, FLTBPT);
|
|
sigaddset (run_fault, FLTTRACE);
|
|
sigaddset (run_fault, FLTILL);
|
|
sigaddset (run_fault, FLTPRIV);
|
|
sigaddset (run_fault, FLTBOUNDS);
|
|
sigaddset (run_fault, FLTIOVF);
|
|
sigaddset (run_fault, FLTIZDIV);
|
|
sigaddset (run_fault, FLTFPE);
|
|
/* Peter V will be changing this at some point. */
|
|
sigaddset (run_fault, FLTPAGE);
|
|
|
|
run.flags |= _DEBUG_RUN_ARM;
|
|
|
|
signal_to_pass = gdb_signal_to_host (signo);
|
|
|
|
if (signal_to_pass)
|
|
{
|
|
devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
|
|
signal_to_pass = gdb_signal_to_host (signo);
|
|
if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED))
|
|
{
|
|
if (signal_to_pass != status.info.si_signo)
|
|
{
|
|
SignalKill (nto_node (), inferior_ptid.pid (), 0,
|
|
signal_to_pass, 0, 0);
|
|
run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG;
|
|
}
|
|
else /* Let it kill the program without telling us. */
|
|
sigdelset (&run.trace, signal_to_pass);
|
|
}
|
|
}
|
|
else
|
|
run.flags |= _DEBUG_RUN_CLRSIG | _DEBUG_RUN_CLRFLT;
|
|
|
|
errno = devctl (ctl_fd, DCMD_PROC_RUN, &run, sizeof (run), 0);
|
|
if (errno != EOK)
|
|
{
|
|
perror (_("run error!\n"));
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::mourn_inferior ()
|
|
{
|
|
if (inferior_ptid != null_ptid)
|
|
{
|
|
SignalKill (nto_node (), inferior_ptid.pid (), 0, SIGKILL, 0, 0);
|
|
close (ctl_fd);
|
|
}
|
|
inferior_ptid = null_ptid;
|
|
init_thread_list ();
|
|
inf_child_mourn_inferior (ops);
|
|
}
|
|
|
|
/* This function breaks up an argument string into an argument
|
|
vector suitable for passing to execvp().
|
|
E.g., on "run a b c d" this routine would get as input
|
|
the string "a b c d", and as output it would fill in argv with
|
|
the four arguments "a", "b", "c", "d". The only additional
|
|
functionality is simple quoting. The gdb command:
|
|
run a "b c d" f
|
|
will fill in argv with the three args "a", "b c d", "e". */
|
|
static void
|
|
breakup_args (char *scratch, char **argv)
|
|
{
|
|
char *pp, *cp = scratch;
|
|
char quoting = 0;
|
|
|
|
for (;;)
|
|
{
|
|
/* Scan past leading separators. */
|
|
quoting = 0;
|
|
while (*cp == ' ' || *cp == '\t' || *cp == '\n')
|
|
cp++;
|
|
|
|
/* Break if at end of string. */
|
|
if (*cp == '\0')
|
|
break;
|
|
|
|
/* Take an arg. */
|
|
if (*cp == '"')
|
|
{
|
|
cp++;
|
|
quoting = strchr (cp, '"') ? 1 : 0;
|
|
}
|
|
|
|
*argv++ = cp;
|
|
|
|
/* Scan for next arg separator. */
|
|
pp = cp;
|
|
if (quoting)
|
|
cp = strchr (pp, '"');
|
|
if ((cp == NULL) || (!quoting))
|
|
cp = strchr (pp, ' ');
|
|
if (cp == NULL)
|
|
cp = strchr (pp, '\t');
|
|
if (cp == NULL)
|
|
cp = strchr (pp, '\n');
|
|
|
|
/* No separators => end of string => break. */
|
|
if (cp == NULL)
|
|
{
|
|
pp = cp;
|
|
break;
|
|
}
|
|
|
|
/* Replace the separator with a terminator. */
|
|
*cp++ = '\0';
|
|
}
|
|
|
|
/* Execv requires a null-terminated arg vector. */
|
|
*argv = NULL;
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::create_inferior (const char *exec_file,
|
|
const std::string &allargs,
|
|
char **env, int from_tty)
|
|
{
|
|
struct inheritance inherit;
|
|
pid_t pid;
|
|
int flags, errn;
|
|
char **argv, *args;
|
|
const char *in = "", *out = "", *err = "";
|
|
int fd, fds[3];
|
|
sigset_t set;
|
|
const char *inferior_io_terminal = get_inferior_io_terminal ();
|
|
struct inferior *inf;
|
|
|
|
argv = xmalloc ((allargs.size () / (unsigned) 2 + 2) *
|
|
sizeof (*argv));
|
|
argv[0] = get_exec_file (1);
|
|
if (!argv[0])
|
|
{
|
|
if (exec_file)
|
|
argv[0] = exec_file;
|
|
else
|
|
return;
|
|
}
|
|
|
|
args = xstrdup (allargs.c_str ());
|
|
breakup_args (args, (exec_file != NULL) ? &argv[1] : &argv[0]);
|
|
|
|
argv = nto_parse_redirection (argv, &in, &out, &err);
|
|
|
|
fds[0] = STDIN_FILENO;
|
|
fds[1] = STDOUT_FILENO;
|
|
fds[2] = STDERR_FILENO;
|
|
|
|
/* If the user specified I/O via gdb's --tty= arg, use it, but only
|
|
if the i/o is not also being specified via redirection. */
|
|
if (inferior_io_terminal)
|
|
{
|
|
if (!in[0])
|
|
in = inferior_io_terminal;
|
|
if (!out[0])
|
|
out = inferior_io_terminal;
|
|
if (!err[0])
|
|
err = inferior_io_terminal;
|
|
}
|
|
|
|
if (in[0])
|
|
{
|
|
fd = open (in, O_RDONLY);
|
|
if (fd == -1)
|
|
perror (in);
|
|
else
|
|
fds[0] = fd;
|
|
}
|
|
if (out[0])
|
|
{
|
|
fd = open (out, O_WRONLY);
|
|
if (fd == -1)
|
|
perror (out);
|
|
else
|
|
fds[1] = fd;
|
|
}
|
|
if (err[0])
|
|
{
|
|
fd = open (err, O_WRONLY);
|
|
if (fd == -1)
|
|
perror (err);
|
|
else
|
|
fds[2] = fd;
|
|
}
|
|
|
|
/* Clear any pending SIGUSR1's but keep the behavior the same. */
|
|
signal (SIGUSR1, signal (SIGUSR1, SIG_IGN));
|
|
|
|
sigemptyset (&set);
|
|
sigaddset (&set, SIGUSR1);
|
|
sigprocmask (SIG_UNBLOCK, &set, NULL);
|
|
|
|
memset (&inherit, 0, sizeof (inherit));
|
|
|
|
if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0)
|
|
{
|
|
inherit.nd = nto_node ();
|
|
inherit.flags |= SPAWN_SETND;
|
|
inherit.flags &= ~SPAWN_EXEC;
|
|
}
|
|
inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD;
|
|
inherit.pgroup = SPAWN_NEWPGROUP;
|
|
pid = spawnp (argv[0], 3, fds, &inherit, argv,
|
|
ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0 ? env : 0);
|
|
xfree (args);
|
|
|
|
sigprocmask (SIG_BLOCK, &set, NULL);
|
|
|
|
if (pid == -1)
|
|
error (_("Error spawning %s: %d (%s)"), argv[0], errno,
|
|
safe_strerror (errno));
|
|
|
|
if (fds[0] != STDIN_FILENO)
|
|
close (fds[0]);
|
|
if (fds[1] != STDOUT_FILENO)
|
|
close (fds[1]);
|
|
if (fds[2] != STDERR_FILENO)
|
|
close (fds[2]);
|
|
|
|
inferior_ptid = do_attach (ptid_t (pid));
|
|
procfs_update_thread_list (ops);
|
|
|
|
inf = current_inferior ();
|
|
inferior_appeared (inf, pid);
|
|
inf->attach_flag = 0;
|
|
|
|
flags = _DEBUG_FLAG_KLC; /* Kill-on-Last-Close flag. */
|
|
errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0);
|
|
if (errn != EOK)
|
|
{
|
|
/* FIXME: expected warning? */
|
|
/* warning( "Failed to set Kill-on-Last-Close flag: errno = %d(%s)\n",
|
|
errn, strerror(errn) ); */
|
|
}
|
|
if (!target_is_pushed (ops))
|
|
push_target (ops);
|
|
target_terminal::init ();
|
|
|
|
if (exec_bfd != NULL
|
|
|| (symfile_objfile != NULL && symfile_objfile->obfd != NULL))
|
|
solib_create_inferior_hook (0);
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::interrupt ()
|
|
{
|
|
devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0);
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::kill ()
|
|
{
|
|
target_mourn_inferior (inferior_ptid);
|
|
}
|
|
|
|
/* Fill buf with regset and return devctl cmd to do the setting. Return
|
|
-1 if we fail to get the regset. Store size of regset in regsize. */
|
|
static int
|
|
get_regset (int regset, char *buf, int bufsize, int *regsize)
|
|
{
|
|
int dev_get, dev_set;
|
|
switch (regset)
|
|
{
|
|
case NTO_REG_GENERAL:
|
|
dev_get = DCMD_PROC_GETGREG;
|
|
dev_set = DCMD_PROC_SETGREG;
|
|
break;
|
|
|
|
case NTO_REG_FLOAT:
|
|
dev_get = DCMD_PROC_GETFPREG;
|
|
dev_set = DCMD_PROC_SETFPREG;
|
|
break;
|
|
|
|
case NTO_REG_ALT:
|
|
dev_get = DCMD_PROC_GETALTREG;
|
|
dev_set = DCMD_PROC_SETALTREG;
|
|
break;
|
|
|
|
case NTO_REG_SYSTEM:
|
|
default:
|
|
return -1;
|
|
}
|
|
if (devctl (ctl_fd, dev_get, buf, bufsize, regsize) != EOK)
|
|
return -1;
|
|
|
|
return dev_set;
|
|
}
|
|
|
|
void
|
|
nto_procfs_target::store_registers (struct regcache *regcache, int regno)
|
|
{
|
|
union
|
|
{
|
|
procfs_greg greg;
|
|
procfs_fpreg fpreg;
|
|
procfs_altreg altreg;
|
|
}
|
|
reg;
|
|
unsigned off;
|
|
int len, regset, regsize, dev_set, err;
|
|
char *data;
|
|
ptid_t ptid = regcache->ptid ();
|
|
|
|
if (ptid == null_ptid)
|
|
return;
|
|
procfs_set_thread (ptid);
|
|
|
|
if (regno == -1)
|
|
{
|
|
for (regset = NTO_REG_GENERAL; regset < NTO_REG_END; regset++)
|
|
{
|
|
dev_set = get_regset (regset, (char *) ®,
|
|
sizeof (reg), ®size);
|
|
if (dev_set == -1)
|
|
continue;
|
|
|
|
if (nto_regset_fill (regcache, regset, (char *) ®) == -1)
|
|
continue;
|
|
|
|
err = devctl (ctl_fd, dev_set, ®, regsize, 0);
|
|
if (err != EOK)
|
|
fprintf_unfiltered (gdb_stderr,
|
|
"Warning unable to write regset %d: %s\n",
|
|
regno, safe_strerror (err));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
regset = nto_regset_id (regno);
|
|
if (regset == -1)
|
|
return;
|
|
|
|
dev_set = get_regset (regset, (char *) ®, sizeof (reg), ®size);
|
|
if (dev_set == -1)
|
|
return;
|
|
|
|
len = nto_register_area (regcache->arch (),
|
|
regno, regset, &off);
|
|
|
|
if (len < 1)
|
|
return;
|
|
|
|
regcache->raw_collect (regno, (char *) ® + off);
|
|
|
|
err = devctl (ctl_fd, dev_set, ®, regsize, 0);
|
|
if (err != EOK)
|
|
fprintf_unfiltered (gdb_stderr,
|
|
"Warning unable to write regset %d: %s\n", regno,
|
|
safe_strerror (err));
|
|
}
|
|
}
|
|
|
|
/* Set list of signals to be handled in the target. */
|
|
|
|
void
|
|
nto_procfs_target::pass_signals (int numsigs, unsigned char *pass_signals)
|
|
{
|
|
int signo;
|
|
|
|
sigfillset (&run.trace);
|
|
|
|
for (signo = 1; signo < NSIG; signo++)
|
|
{
|
|
int target_signo = gdb_signal_from_host (signo);
|
|
if (target_signo < numsigs && pass_signals[target_signo])
|
|
sigdelset (&run.trace, signo);
|
|
}
|
|
}
|
|
|
|
char *
|
|
nto_procfs_target::pid_to_str (ptid_t ptid)
|
|
{
|
|
static char buf[1024];
|
|
int pid, tid, n;
|
|
struct tidinfo *tip;
|
|
|
|
pid = ptid.pid ();
|
|
tid = ptid.tid ();
|
|
|
|
n = snprintf (buf, 1023, "process %d", pid);
|
|
|
|
#if 0 /* NYI */
|
|
tip = procfs_thread_info (pid, tid);
|
|
if (tip != NULL)
|
|
snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state);
|
|
#endif
|
|
|
|
return buf;
|
|
}
|
|
|
|
/* to_can_run implementation for "target procfs". Note this really
|
|
means "can this target be the default run target", which there can
|
|
be only one, and we make it be "target native" like other ports.
|
|
"target procfs <node>" wouldn't make sense as default run target, as
|
|
it needs <node>. */
|
|
|
|
int
|
|
nto_procfs_target::can_run ()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* "target procfs". */
|
|
static nto_procfs_target_procfs nto_procfs_ops;
|
|
|
|
/* "target native". */
|
|
static nto_procfs_target_native nto_native_ops;
|
|
|
|
/* Create the "native" and "procfs" targets. */
|
|
|
|
static void
|
|
init_procfs_targets (void)
|
|
{
|
|
/* Register "target native". This is the default run target. */
|
|
add_target (nto_native_target_info, inf_child_open_target);
|
|
set_native_target (&nto_native_ops);
|
|
|
|
/* Register "target procfs <node>". */
|
|
add_target (nto_procfs_target_info, inf_child_open_target);
|
|
}
|
|
|
|
#define OSTYPE_NTO 1
|
|
|
|
void
|
|
_initialize_procfs (void)
|
|
{
|
|
sigset_t set;
|
|
|
|
init_procfs_targets ();
|
|
|
|
/* We use SIGUSR1 to gain control after we block waiting for a process.
|
|
We use sigwaitevent to wait. */
|
|
sigemptyset (&set);
|
|
sigaddset (&set, SIGUSR1);
|
|
sigprocmask (SIG_BLOCK, &set, NULL);
|
|
|
|
/* Initially, make sure all signals are reported. */
|
|
sigfillset (&run.trace);
|
|
|
|
/* Stuff some information. */
|
|
nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags;
|
|
nto_cpuinfo_valid = 1;
|
|
|
|
add_info ("pidlist", procfs_pidlist, _("pidlist"));
|
|
add_info ("meminfo", procfs_meminfo, _("memory information"));
|
|
|
|
nto_is_nto_target = procfs_is_nto_target;
|
|
}
|
|
|
|
|
|
static int
|
|
procfs_hw_watchpoint (int addr, int len, enum target_hw_bp_type type)
|
|
{
|
|
procfs_break brk;
|
|
|
|
switch (type)
|
|
{
|
|
case hw_read:
|
|
brk.type = _DEBUG_BREAK_RD;
|
|
break;
|
|
case hw_access:
|
|
brk.type = _DEBUG_BREAK_RW;
|
|
break;
|
|
default: /* Modify. */
|
|
/* FIXME: brk.type = _DEBUG_BREAK_RWM gives EINVAL for some reason. */
|
|
brk.type = _DEBUG_BREAK_RW;
|
|
}
|
|
brk.type |= _DEBUG_BREAK_HW; /* Always ask for HW. */
|
|
brk.addr = addr;
|
|
brk.size = len;
|
|
|
|
errno = devctl (ctl_fd, DCMD_PROC_BREAK, &brk, sizeof (brk), 0);
|
|
if (errno != EOK)
|
|
{
|
|
perror (_("Failed to set hardware watchpoint"));
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
nto_procfs_target::can_use_hw_breakpoint (enum bptype type,
|
|
int cnt, int othertype)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
nto_procfs_target::remove_hw_watchpoint (CORE_ADDR addr, int len,
|
|
enum target_hw_bp_type type,
|
|
struct expression *cond)
|
|
{
|
|
return procfs_hw_watchpoint (addr, -1, type);
|
|
}
|
|
|
|
int
|
|
nto_procfs_target::insert_hw_watchpoint (CORE_ADDR addr, int len,
|
|
enum target_hw_bp_type type,
|
|
struct expression *cond)
|
|
{
|
|
return procfs_hw_watchpoint (addr, len, type);
|
|
}
|
|
|
|
bool
|
|
nto_procfs_target::stopped_by_watchpoint ()
|
|
{
|
|
/* NOTE: nto_stopped_by_watchpoint will be called ONLY while we are
|
|
stopped due to a SIGTRAP. This assumes gdb works in 'all-stop' mode;
|
|
future gdb versions will likely run in 'non-stop' mode in which case
|
|
we will have to store/examine statuses per thread in question.
|
|
Until then, this will work fine. */
|
|
|
|
struct inferior *inf = current_inferior ();
|
|
struct nto_inferior_data *inf_data;
|
|
|
|
gdb_assert (inf != NULL);
|
|
|
|
inf_data = nto_inferior_data (inf);
|
|
|
|
return inf_data->stopped_flags
|
|
& (_DEBUG_FLAG_TRACE_RD
|
|
| _DEBUG_FLAG_TRACE_WR
|
|
| _DEBUG_FLAG_TRACE_MODIFY);
|
|
}
|