#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 "gdb_dirent.h"
#include <sys/netmgr.h>
#include "exceptions.h"
#include "gdb_string.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"
#define NULL_PID 0
#define _DEBUG_FLAG_TRACE (_DEBUG_FLAG_TRACE_EXEC|_DEBUG_FLAG_TRACE_RD|\
_DEBUG_FLAG_TRACE_WR|_DEBUG_FLAG_TRACE_MODIFY)
static struct target_ops procfs_ops;
int ctl_fd;
static void (*ofunc) ();
static procfs_run run;
static void procfs_open (char *, int);
static int procfs_can_run (void);
static ptid_t procfs_wait (ptid_t, struct target_waitstatus *);
static int procfs_xfer_memory (CORE_ADDR, char *, int, int,
struct mem_attrib *attrib,
struct target_ops *);
static void procfs_fetch_registers (int);
static void notice_signals (void);
static void init_procfs_ops (void);
static ptid_t do_attach (ptid_t ptid);
static int procfs_can_use_hw_breakpoint (int, int, int);
static int procfs_insert_hw_breakpoint (CORE_ADDR, char *);
static int procfs_remove_hw_breakpoint (CORE_ADDR addr, char *);
static int procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type);
static int procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type);
static int procfs_stopped_by_watchpoint (void);
static char nto_procfs_path[PATH_MAX] = { "/proc" };
static unsigned nto_procfs_node = ND_LOCAL_NODE;
static unsigned
nto_node (void)
{
unsigned node;
if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0)
return ND_LOCAL_NODE;
node = netmgr_strtond (nto_procfs_path, 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;
}
static void
procfs_open (char *arg, int from_tty)
{
char *nodestr;
char *endstr;
char buffer[50];
int fd, total_size;
procfs_sysinfo *sysinfo;
nto_is_nto_target = procfs_is_nto_target;
nto_procfs_node = ND_LOCAL_NODE;
nodestr = arg ? xstrdup (arg) : arg;
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 ? nodestr : "",
"/proc");
if (nodestr)
xfree (nodestr);
fd = open (nto_procfs_path, O_RDONLY);
if (fd == -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, DCMD_PROC_SYSINFO, sysinfo, sizeof buffer, 0) != EOK)
{
printf_filtered ("Error getting size: %d (%s)\n", errno,
safe_strerror (errno));
close (fd);
error (_("Devctl failed."));
}
else
{
total_size = sysinfo->total_size;
sysinfo = alloca (total_size);
if (!sysinfo)
{
printf_filtered ("Memory error: %d (%s)\n", errno,
safe_strerror (errno));
close (fd);
error (_("alloca failed."));
}
else
{
if (devctl (fd, DCMD_PROC_SYSINFO, sysinfo, total_size, 0) != EOK)
{
printf_filtered ("Error getting sysinfo: %d (%s)\n", errno,
safe_strerror (errno));
close (fd);
error (_("Devctl failed."));
}
else
{
if (sysinfo->type !=
nto_map_arch_to_cputype (TARGET_ARCHITECTURE->arch_name))
{
close (fd);
error (_("Invalid target CPU."));
}
}
}
}
close (fd);
printf_filtered ("Debugging using %s\n", nto_procfs_path);
}
static void
procfs_set_thread (ptid_t ptid)
{
pid_t tid;
tid = ptid_get_tid (ptid);
devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0);
}
static int
procfs_thread_alive (ptid_t ptid)
{
pid_t tid;
tid = ptid_get_tid (ptid);
if (devctl (ctl_fd, DCMD_PROC_CURTHREAD, &tid, sizeof (tid), 0) == EOK)
return 1;
return 0;
}
void
procfs_find_new_threads (void)
{
procfs_status status;
pid_t pid;
ptid_t ptid;
if (ctl_fd == -1)
return;
pid = ptid_get_pid (inferior_ptid);
for (status.tid = 1;; ++status.tid)
{
if (devctl (ctl_fd, DCMD_PROC_TIDSTATUS, &status, sizeof (status), 0)
!= EOK && status.tid != 0)
break;
ptid = ptid_build (pid, 0, status.tid);
if (!in_thread_list (ptid))
add_thread (ptid);
}
return;
}
void
procfs_pidlist (char *args, int from_tty)
{
DIR *dp = NULL;
struct dirent *dirp = NULL;
int fd = -1;
char buf[512];
procfs_info *pidinfo = NULL;
procfs_debuginfo *info = NULL;
procfs_status *status = NULL;
pid_t num_threads = 0;
pid_t pid;
char name[512];
dp = opendir (nto_procfs_path);
if (dp == NULL)
{
fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)",
nto_procfs_path, errno, safe_strerror (errno));
return;
}
rewinddir (dp);
do
{
do
{
dirp = readdir (dp);
if (dirp == NULL)
{
closedir (dp);
return;
}
snprintf (buf, 511, "%s/%s/as", nto_procfs_path, dirp->d_name);
pid = atoi (dirp->d_name);
}
while (pid == 0);
fd = open (buf, O_RDONLY);
if (fd == -1)
{
fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n",
buf, errno, safe_strerror (errno));
closedir (dp);
return;
}
pidinfo = (procfs_info *) buf;
if (devctl (fd, 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, DCMD_PROC_MAPDEBUG_BASE, info, sizeof (buf), 0) != EOK)
strcpy (name, "unavailable");
else
strcpy (name, info->path);
status = (procfs_status *) buf;
for (status->tid = 1; status->tid <= num_threads; status->tid++)
{
if (devctl (fd, DCMD_PROC_TIDSTATUS, status, sizeof (buf), 0) != EOK
&& status->tid != 0)
break;
if (status->tid != 0)
printf_filtered ("%s - %d/%d\n", name, pid, status->tid);
}
close (fd);
}
while (dirp != NULL);
close (fd);
closedir (dp);
return;
}
void
procfs_meminfo (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;
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 = xmalloc (num * sizeof (procfs_mapinfo));
num_mapinfos = num;
mapinfo_p = mapinfos;
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 = min (num, num_mapinfos);
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)
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);
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;
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=%016llx\n", printme.text.offset);
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=%016llx\n", printme.data.offset);
}
printf_filtered ("\tdev=0x%x\n", printme.dev);
printf_filtered ("\tino=0x%x\n", (unsigned int) printme.ino);
}
xfree (mapinfos);
return;
}
static void
procfs_files_info (struct target_ops *ignore)
{
printf_unfiltered ("\tUsing the running image of %s %s via %s.\n",
attach_flag ? "attached" : "child",
target_pid_to_str (inferior_ptid), nto_procfs_path);
}
static int
procfs_can_run (void)
{
return 1;
}
static void
procfs_attach (char *args, int from_tty)
{
char *exec_file;
int pid;
if (!args)
error_no_arg (_("process-id to attach"));
pid = atoi (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 (pid_to_ptid (pid)));
else
printf_unfiltered ("Attaching to %s\n",
target_pid_to_str (pid_to_ptid (pid)));
gdb_flush (gdb_stdout);
}
inferior_ptid = do_attach (pid_to_ptid (pid));
push_target (&procfs_ops);
}
static void
procfs_post_attach (pid_t pid)
{
if (exec_bfd)
solib_create_inferior_hook ();
}
static ptid_t
do_attach (ptid_t ptid)
{
procfs_status status;
struct sigevent event;
char path[PATH_MAX];
snprintf (path, PATH_MAX - 1, "%s/%d/as", nto_procfs_path, PIDGET (ptid));
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"));
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 (), PIDGET (ptid), 0, SIGCONT, 0, 0);
attach_flag = 1;
nto_init_solib_absolute_prefix ();
return ptid;
}
static void
interrupt_query (void)
{
target_terminal_ours ();
if (query ("Interrupted while waiting for the program.\n\
Give up (and stop debugging it)? "))
{
target_mourn_inferior ();
deprecated_throw_reason (RETURN_QUIT);
}
target_terminal_inferior ();
}
static void
nto_interrupt_twice (int signo)
{
signal (signo, ofunc);
interrupt_query ();
signal (signo, nto_interrupt_twice);
}
static void
nto_interrupt (int signo)
{
signal (signo, nto_interrupt_twice);
target_stop ();
}
static ptid_t
procfs_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
{
sigset_t set;
siginfo_t info;
procfs_status status;
static int exit_signo = 0;
ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
if (ptid_equal (inferior_ptid, null_ptid))
{
ourstatus->kind = TARGET_WAITKIND_STOPPED;
ourstatus->value.sig = TARGET_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 = (void (*)()) signal (SIGINT, nto_interrupt);
sigwaitinfo (&set, &info);
signal (SIGINT, ofunc);
devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
}
if (status.flags & _DEBUG_FLAG_SSTEP)
{
ourstatus->kind = TARGET_WAITKIND_STOPPED;
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
}
else if (status.flags & _DEBUG_FLAG_TRACE)
{
ourstatus->kind = TARGET_WAITKIND_STOPPED;
ourstatus->value.sig = TARGET_SIGNAL_TRAP;
}
else if (status.flags & _DEBUG_FLAG_ISTOP)
{
switch (status.why)
{
case _DEBUG_WHY_SIGNALLED:
ourstatus->kind = TARGET_WAITKIND_STOPPED;
ourstatus->value.sig =
target_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 =
target_signal_from_host (status.info.si_signo);
exit_signo = ourstatus->value.sig;
}
break;
case _DEBUG_WHY_TERMINATED:
{
int waitval = 0;
waitpid (PIDGET (inferior_ptid), &waitval, WNOHANG);
if (exit_signo)
{
ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
ourstatus->value.sig = exit_signo;
}
else
{
ourstatus->kind = TARGET_WAITKIND_EXITED;
ourstatus->value.integer = WEXITSTATUS (waitval);
}
exit_signo = 0;
break;
}
case _DEBUG_WHY_REQUESTED:
ourstatus->kind = TARGET_WAITKIND_STOPPED;
ourstatus->value.sig = TARGET_SIGNAL_INT;
exit_signo = 0;
break;
}
}
return inferior_ptid;
}
static void
procfs_fetch_registers (int regno)
{
union
{
procfs_greg greg;
procfs_fpreg fpreg;
procfs_altreg altreg;
}
reg;
int regsize;
procfs_set_thread (inferior_ptid);
if (devctl (ctl_fd, DCMD_PROC_GETGREG, ®, sizeof (reg), ®size) == EOK)
nto_supply_gregset ((char *) ®.greg);
if (devctl (ctl_fd, DCMD_PROC_GETFPREG, ®, sizeof (reg), ®size)
== EOK)
nto_supply_fpregset ((char *) ®.fpreg);
if (devctl (ctl_fd, DCMD_PROC_GETALTREG, ®, sizeof (reg), ®size)
== EOK)
nto_supply_altregset ((char *) ®.altreg);
}
static int
procfs_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int dowrite,
struct mem_attrib *attrib, struct target_ops *target)
{
int nbytes = 0;
if (lseek (ctl_fd, (off_t) memaddr, SEEK_SET) == (off_t) memaddr)
{
if (dowrite)
nbytes = write (ctl_fd, myaddr, len);
else
nbytes = read (ctl_fd, myaddr, len);
if (nbytes < 0)
nbytes = 0;
}
return (nbytes);
}
static void
procfs_detach (char *args, int from_tty)
{
int siggnal = 0;
if (from_tty)
{
char *exec_file = get_exec_file (0);
if (exec_file == 0)
exec_file = "";
printf_unfiltered ("Detaching from program: %s %s\n",
exec_file, target_pid_to_str (inferior_ptid));
gdb_flush (gdb_stdout);
}
if (args)
siggnal = atoi (args);
if (siggnal)
SignalKill (nto_node (), PIDGET (inferior_ptid), 0, siggnal, 0, 0);
close (ctl_fd);
ctl_fd = -1;
init_thread_list ();
inferior_ptid = null_ptid;
attach_flag = 0;
unpush_target (&procfs_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;
}
static int
procfs_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
{
return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC, 0);
}
static int
procfs_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
{
return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC, -1);
}
static int
procfs_insert_hw_breakpoint (CORE_ADDR addr, char *contents_cache)
{
return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, 0);
}
static int
procfs_remove_hw_breakpoint (CORE_ADDR addr, char *contents_cache)
{
return procfs_breakpoint (addr, _DEBUG_BREAK_EXEC | _DEBUG_BREAK_HW, -1);
}
static void
procfs_resume (ptid_t ptid, int step, enum target_signal signo)
{
int signal_to_pass;
procfs_status status;
if (ptid_equal (inferior_ptid, null_ptid))
return;
procfs_set_thread (ptid_equal (ptid, minus_one_ptid) ? inferior_ptid :
ptid);
run.flags = _DEBUG_RUN_FAULT | _DEBUG_RUN_TRACE;
if (step)
run.flags |= _DEBUG_RUN_STEP;
sigemptyset ((sigset_t *) &run.fault);
sigaddset ((sigset_t *) &run.fault, FLTBPT);
sigaddset ((sigset_t *) &run.fault, FLTTRACE);
sigaddset ((sigset_t *) &run.fault, FLTILL);
sigaddset ((sigset_t *) &run.fault, FLTPRIV);
sigaddset ((sigset_t *) &run.fault, FLTBOUNDS);
sigaddset ((sigset_t *) &run.fault, FLTIOVF);
sigaddset ((sigset_t *) &run.fault, FLTIZDIV);
sigaddset ((sigset_t *) &run.fault, FLTFPE);
sigaddset ((sigset_t *) &run.fault, FLTPAGE);
run.flags |= _DEBUG_RUN_ARM;
sigemptyset (&run.trace);
notice_signals ();
signal_to_pass = target_signal_to_host (signo);
if (signal_to_pass)
{
devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0);
signal_to_pass = target_signal_to_host (signo);
if (status.why & (_DEBUG_WHY_SIGNALLED | _DEBUG_WHY_FAULTED))
{
if (signal_to_pass != status.info.si_signo)
{
SignalKill (nto_node (), PIDGET (inferior_ptid), 0,
signal_to_pass, 0, 0);
run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG;
}
else
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;
}
}
static void
procfs_mourn_inferior (void)
{
if (!ptid_equal (inferior_ptid, null_ptid))
{
SignalKill (nto_node (), PIDGET (inferior_ptid), 0, SIGKILL, 0, 0);
close (ctl_fd);
}
inferior_ptid = null_ptid;
init_thread_list ();
unpush_target (&procfs_ops);
generic_mourn_inferior ();
attach_flag = 0;
}
static void
breakup_args (char *scratch, char **argv)
{
char *pp, *cp = scratch;
char quoting = 0;
for (;;)
{
quoting = 0;
while (*cp == ' ' || *cp == '\t' || *cp == '\n')
cp++;
if (*cp == '\0')
break;
if (*cp == '"')
{
cp++;
quoting = strchr (cp, '"') ? 1 : 0;
}
*argv++ = cp;
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');
if (cp == NULL)
{
pp = cp;
break;
}
*cp++ = '\0';
}
*argv = NULL;
}
static void
procfs_create_inferior (char *exec_file, char *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 ();
argv = xmalloc (((strlen (allargs) + 1) / (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);
breakup_args (args, exec_file ? &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 (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;
}
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 (pid_to_ptid (pid));
attach_flag = 0;
flags = _DEBUG_FLAG_KLC;
errn = devctl (ctl_fd, DCMD_PROC_SET_FLAG, &flags, sizeof (flags), 0);
if (errn != EOK)
{
}
push_target (&procfs_ops);
target_terminal_init ();
if (exec_bfd != NULL
|| (symfile_objfile != NULL && symfile_objfile->obfd != NULL))
solib_create_inferior_hook ();
stop_soon = 0;
proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
}
static void
procfs_stop (void)
{
devctl (ctl_fd, DCMD_PROC_STOP, NULL, 0, 0);
}
static void
procfs_kill_inferior (void)
{
target_mourn_inferior ();
}
static void
procfs_prepare_to_store (void)
{
}
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
procfs_store_registers (int regno)
{
union
{
procfs_greg greg;
procfs_fpreg fpreg;
procfs_altreg altreg;
}
reg;
unsigned off;
int len, regset, regsize, dev_set, err;
char *data;
if (ptid_equal (inferior_ptid, null_ptid))
return;
procfs_set_thread (inferior_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 (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 (regno, regset, &off);
if (len < 1)
return;
regcache_raw_collect (current_regcache, 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));
}
}
static void
notice_signals (void)
{
int signo;
for (signo = 1; 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)
sigdelset (&run.trace, signo);
else
sigaddset (&run.trace, signo);
}
}
static void
procfs_notice_signals (ptid_t ptid)
{
sigemptyset (&run.trace);
notice_signals ();
}
static struct tidinfo *
procfs_thread_info (pid_t pid, short tid)
{
return NULL;
}
char *
procfs_pid_to_str (ptid_t ptid)
{
static char buf[1024];
int pid, tid, n;
struct tidinfo *tip;
pid = ptid_get_pid (ptid);
tid = ptid_get_tid (ptid);
n = snprintf (buf, 1023, "process %d", pid);
#if 0
tip = procfs_thread_info (pid, tid);
if (tip != NULL)
snprintf (&buf[n], 1023, " (state = 0x%02x)", tip->state);
#endif
return buf;
}
static void
init_procfs_ops (void)
{
procfs_ops.to_shortname = "procfs";
procfs_ops.to_longname = "QNX Neutrino procfs child process";
procfs_ops.to_doc =
"QNX Neutrino procfs child process (started by the \"run\" command).\n\
target procfs <node>";
procfs_ops.to_open = procfs_open;
procfs_ops.to_attach = procfs_attach;
procfs_ops.to_post_attach = procfs_post_attach;
procfs_ops.to_detach = procfs_detach;
procfs_ops.to_resume = procfs_resume;
procfs_ops.to_wait = procfs_wait;
procfs_ops.to_fetch_registers = procfs_fetch_registers;
procfs_ops.to_store_registers = procfs_store_registers;
procfs_ops.to_prepare_to_store = procfs_prepare_to_store;
procfs_ops.deprecated_xfer_memory = procfs_xfer_memory;
procfs_ops.to_files_info = procfs_files_info;
procfs_ops.to_insert_breakpoint = procfs_insert_breakpoint;
procfs_ops.to_remove_breakpoint = procfs_remove_breakpoint;
procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint;
procfs_ops.to_insert_hw_breakpoint = procfs_insert_hw_breakpoint;
procfs_ops.to_remove_hw_breakpoint = procfs_remove_breakpoint;
procfs_ops.to_insert_watchpoint = procfs_insert_hw_watchpoint;
procfs_ops.to_remove_watchpoint = procfs_remove_hw_watchpoint;
procfs_ops.to_stopped_by_watchpoint = procfs_stopped_by_watchpoint;
procfs_ops.to_terminal_init = terminal_init_inferior;
procfs_ops.to_terminal_inferior = terminal_inferior;
procfs_ops.to_terminal_ours_for_output = terminal_ours_for_output;
procfs_ops.to_terminal_ours = terminal_ours;
procfs_ops.to_terminal_info = child_terminal_info;
procfs_ops.to_kill = procfs_kill_inferior;
procfs_ops.to_create_inferior = procfs_create_inferior;
procfs_ops.to_mourn_inferior = procfs_mourn_inferior;
procfs_ops.to_can_run = procfs_can_run;
procfs_ops.to_notice_signals = procfs_notice_signals;
procfs_ops.to_thread_alive = procfs_thread_alive;
procfs_ops.to_find_new_threads = procfs_find_new_threads;
procfs_ops.to_pid_to_str = procfs_pid_to_str;
procfs_ops.to_stop = procfs_stop;
procfs_ops.to_stratum = process_stratum;
procfs_ops.to_has_all_memory = 1;
procfs_ops.to_has_memory = 1;
procfs_ops.to_has_stack = 1;
procfs_ops.to_has_registers = 1;
procfs_ops.to_has_execution = 1;
procfs_ops.to_magic = OPS_MAGIC;
procfs_ops.to_have_continuable_watchpoint = 1;
}
#define OSTYPE_NTO 1
void
_initialize_procfs (void)
{
sigset_t set;
init_procfs_ops ();
add_target (&procfs_ops);
sigemptyset (&set);
sigaddset (&set, SIGUSR1);
sigprocmask (SIG_BLOCK, &set, NULL);
sigemptyset (&run.trace);
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, int type)
{
procfs_break brk;
switch (type)
{
case 1:
brk.type = _DEBUG_BREAK_RD;
break;
case 2:
brk.type = _DEBUG_BREAK_RW;
break;
default:
brk.type = _DEBUG_BREAK_RW;
}
brk.type |= _DEBUG_BREAK_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;
}
static int
procfs_can_use_hw_breakpoint (int type, int cnt, int othertype)
{
return 1;
}
static int
procfs_remove_hw_watchpoint (CORE_ADDR addr, int len, int type)
{
return procfs_hw_watchpoint (addr, -1, type);
}
static int
procfs_insert_hw_watchpoint (CORE_ADDR addr, int len, int type)
{
return procfs_hw_watchpoint (addr, len, type);
}
static int
procfs_stopped_by_watchpoint (void)
{
return 0;
}