--- /dev/null
+/* Default child (native) target interface, for GDB when running under
+ Unix.
+
+ Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1998, 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
+
+ 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 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. */
+
+#include "defs.h"
+#include "regcache.h"
+#include "memattr.h"
+#include "symtab.h"
+#include "target.h"
+#include "inferior.h"
+
+/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
+ for all registers. */
+
+static void
+inf_child_fetch_inferior_registers (int regnum)
+{
+ if (regnum == -1)
+ {
+ for (regnum = 0; regnum < NUM_REGS; regnum++)
+ regcache_raw_supply (current_regcache, regnum, NULL);
+ }
+ else
+ regcache_raw_supply (current_regcache, regnum, NULL);
+}
+
+/* Store register REGNUM back into the inferior. If REGNUM is -1, do
+ this for all registers (including the floating point registers). */
+
+static void
+inf_child_store_inferior_registers (int regnum)
+{
+}
+
+void
+inf_child_post_wait (ptid_t ptid, int wait_status)
+{
+ /* This version of Unix doesn't require a meaningful "post wait"
+ operation.
+ */
+}
+
+static void
+inf_child_post_attach (int pid)
+{
+ /* This version of Unix doesn't require a meaningful "post attach"
+ operation by a debugger. */
+}
+
+/* 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, this
+ makes sure that registers contains all the registers from the
+ program being debugged. */
+
+static void
+inf_child_prepare_to_store (void)
+{
+}
+
+static void
+inf_child_open (char *arg, int from_tty)
+{
+ error ("Use the \"run\" command to start a Unix child process.");
+}
+
+static void
+inf_child_post_startup_inferior (ptid_t ptid)
+{
+ /* This version of Unix doesn't require a meaningful "post startup
+ inferior" operation by a debugger. */
+}
+
+static void
+inf_child_acknowledge_created_inferior (int pid)
+{
+ /* This version of Unix doesn't require a meaningful "acknowledge
+ created inferior" operation by a debugger. */
+}
+
+static int
+inf_child_insert_fork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of fork
+ events. */
+ return 0;
+}
+
+static int
+inf_child_remove_fork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of fork
+ events. */
+ return 0;
+}
+
+static int
+inf_child_insert_vfork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of vfork
+ events. */
+ return 0;
+}
+
+static int
+inf_child_remove_vfork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of vfork
+ events. */
+ return 0;
+}
+
+static int
+inf_child_follow_fork (int follow_child)
+{
+ /* This version of Unix doesn't support following fork or vfork
+ events. */
+ return 0;
+}
+
+static int
+inf_child_insert_exec_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of exec
+ events. */
+ return 0;
+}
+
+static int
+inf_child_remove_exec_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of exec
+ events. */
+ return 0;
+}
+
+static int
+inf_child_reported_exec_events_per_exec_call (void)
+{
+ /* This version of Unix doesn't support notification of exec
+ events. */
+ return 1;
+}
+
+static int
+inf_child_can_run (void)
+{
+ return 1;
+}
+
+static struct symtab_and_line *
+inf_child_enable_exception_callback (enum exception_event_kind kind,
+ int enable)
+{
+ return (struct symtab_and_line *) NULL;
+}
+
+static struct exception_event_record *
+inf_child_get_current_exception_event (void)
+{
+ return (struct exception_event_record *) NULL;
+}
+
+static char *
+inf_child_pid_to_exec_file (int pid)
+{
+ /* This version of Unix doesn't support translation of a process ID
+ to the filename of the executable file. */
+ return NULL;
+}
+
+static char *
+inf_child_core_file_to_sym_file (char *core)
+{
+ /* The target stratum for a running executable need not support this
+ operation. */
+ return NULL;
+}
+
+struct target_ops *
+inf_child_target (void)
+{
+ struct target_ops *t = XZALLOC (struct target_ops);
+ t->to_shortname = "child";
+ t->to_longname = "Unix child process";
+ t->to_doc = "Unix child process (started by the \"run\" command).";
+ t->to_open = inf_child_open;
+ t->to_post_attach = inf_child_post_attach;
+ t->to_post_wait = inf_child_post_wait;
+ t->to_prepare_to_store = inf_child_prepare_to_store;
+ t->to_insert_breakpoint = memory_insert_breakpoint;
+ t->to_remove_breakpoint = memory_remove_breakpoint;
+ t->to_terminal_init = terminal_init_inferior;
+ t->to_terminal_inferior = terminal_inferior;
+ t->to_terminal_ours_for_output = terminal_ours_for_output;
+ t->to_terminal_save_ours = terminal_save_ours;
+ t->to_terminal_ours = terminal_ours;
+ t->to_terminal_info = child_terminal_info;
+ t->to_post_startup_inferior = inf_child_post_startup_inferior;
+ t->to_acknowledge_created_inferior = inf_child_acknowledge_created_inferior;
+ t->to_insert_fork_catchpoint = inf_child_insert_fork_catchpoint;
+ t->to_remove_fork_catchpoint = inf_child_remove_fork_catchpoint;
+ t->to_insert_vfork_catchpoint = inf_child_insert_vfork_catchpoint;
+ t->to_remove_vfork_catchpoint = inf_child_remove_vfork_catchpoint;
+ t->to_follow_fork = inf_child_follow_fork;
+ t->to_insert_exec_catchpoint = inf_child_insert_exec_catchpoint;
+ t->to_remove_exec_catchpoint = inf_child_remove_exec_catchpoint;
+ t->to_reported_exec_events_per_exec_call =
+ inf_child_reported_exec_events_per_exec_call;
+ t->to_can_run = inf_child_can_run;
+ t->to_enable_exception_callback = inf_child_enable_exception_callback;
+ t->to_get_current_exception_event = inf_child_get_current_exception_event;
+ t->to_pid_to_exec_file = inf_child_pid_to_exec_file;
+ t->to_stratum = process_stratum;
+ t->to_has_all_memory = 1;
+ t->to_has_memory = 1;
+ t->to_has_stack = 1;
+ t->to_has_registers = 1;
+ t->to_has_execution = 1;
+ t->to_magic = OPS_MAGIC;
+ return t;
+}
--- /dev/null
+/* Low level Unix child interface to ptrace, for GDB when running under Unix.
+
+ Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1998, 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
+
+ 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 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. */
+
+#include "defs.h"
+#include "observer.h"
+#include "gdb_ptrace.h"
+#include "inflow.h"
+#include "inferior.h"
+#include "regcache.h"
+#include "command.h"
+#include "gdbcore.h"
+#include "inf-child.h"
+#include "gdbcmd.h"
+
+#include <sys/wait.h>
+#include <signal.h>
+
+/* HACK: Save the ptrace ops returned by ptrace_target. */
+static struct target_ops *ptrace_ops_hack;
+
+static void
+inf_ptrace_kill_inferior (void)
+{
+ int status;
+ int pid = PIDGET (inferior_ptid);
+
+ if (pid == 0)
+ return;
+
+ /* This once used to call "kill" to kill the inferior just in case
+ the inferior was still running. As others have noted in the past
+ (kingdon) there shouldn't be any way to get here if the inferior
+ is still running -- else there's a major problem elsewere in gdb
+ and it needs to be fixed.
+
+ The kill call causes problems under hpux10, so it's been removed;
+ if this causes problems we'll deal with them as they arise. */
+ call_ptrace (PT_KILL, pid, (PTRACE_TYPE_ARG3) 0, 0);
+ ptrace_wait (null_ptid, &status);
+ target_mourn_inferior ();
+}
+
+/* Resume execution of the inferior process. If STEP is nonzero,
+ single-step it. If SIGNAL is nonzero, give it that signal. */
+
+static void
+inf_ptrace_resume (ptid_t ptid, int step, enum target_signal signal)
+{
+ int request = PT_CONTINUE;
+ int pid = PIDGET (ptid);
+
+ if (pid == -1)
+ /* Resume all threads. */
+ /* I think this only gets used in the non-threaded case, where
+ "resume all threads" and "resume inferior_ptid" are the
+ same. */
+ pid = PIDGET (inferior_ptid);
+
+ if (step)
+ {
+ /* If this system does not support PT_STEP, a higher level
+ function will have called single_step() to transmute the step
+ request into a continue request (by setting breakpoints on
+ all possible successor instructions), so we don't have to
+ worry about that here. */
+ request = PT_STEP;
+ }
+
+ /* An address of (PTRACE_TYPE_ARG3)1 tells ptrace to continue from
+ where it was. If GDB wanted it to start some other way, we have
+ already written a new PC value to the child. */
+ errno = 0;
+ ptrace (request, pid, (PTRACE_TYPE_ARG3) 1, target_signal_to_host (signal));
+ if (errno != 0)
+ perror_with_name ("ptrace");
+}
+
+/* Set an upper limit on alloca. */
+#define GDB_MAX_ALLOCA 0x1000
+
+/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
+ in the NEW_SUN_PTRACE case. It ought to be straightforward. But
+ it appears that writing did not write the data that I specified. I
+ cannot understand where it got the data that it actually did
+ write. */
+
+/* Copy LEN bytes to or from inferior's memory starting at MEMADDR to
+ debugger memory starting at MYADDR. Copy to inferior if WRITE is
+ nonzero. TARGET is ignored.
+
+ Returns the length copied, which is either the LEN argument or
+ zero. This xfer function does not do partial moves, since
+ ptrace_ops_hack doesn't allow memory operations to cross below us in the
+ target stack anyway. */
+
+int
+inf_ptrace_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
+ struct mem_attrib *attrib, struct target_ops *target)
+{
+ int i;
+ /* Round starting address down to longword boundary. */
+ CORE_ADDR addr = memaddr & -(CORE_ADDR) sizeof (PTRACE_TYPE_RET);
+ /* Round ending address up; get number of longwords that makes. */
+ int count = ((((memaddr + len) - addr) + sizeof (PTRACE_TYPE_RET) - 1)
+ / sizeof (PTRACE_TYPE_RET));
+ int alloc = count * sizeof (PTRACE_TYPE_RET);
+ PTRACE_TYPE_RET *buffer;
+ struct cleanup *old_chain = NULL;
+
+#ifdef PT_IO
+ /* OpenBSD 3.1, NetBSD 1.6 and FreeBSD 5.0 have a new PT_IO request
+ that promises to be much more efficient in reading and writing
+ data in the traced process's address space. */
+
+ {
+ struct ptrace_io_desc piod;
+
+ /* NOTE: We assume that there are no distinct address spaces for
+ instruction and data. */
+ piod.piod_op = write ? PIOD_WRITE_D : PIOD_READ_D;
+ piod.piod_offs = (void *) memaddr;
+ piod.piod_addr = myaddr;
+ piod.piod_len = len;
+
+ if (ptrace (PT_IO, PIDGET (inferior_ptid), (caddr_t) & piod, 0) == -1)
+ {
+ /* If the PT_IO request is somehow not supported, fallback on
+ using PT_WRITE_D/PT_READ_D. Otherwise we will return zero
+ to indicate failure. */
+ if (errno != EINVAL)
+ return 0;
+ }
+ else
+ {
+ /* Return the actual number of bytes read or written. */
+ return piod.piod_len;
+ }
+ }
+#endif
+
+ /* Allocate buffer of that many longwords. */
+ if (len < GDB_MAX_ALLOCA)
+ {
+ buffer = (PTRACE_TYPE_RET *) alloca (alloc);
+ }
+ else
+ {
+ buffer = (PTRACE_TYPE_RET *) xmalloc (alloc);
+ old_chain = make_cleanup (xfree, buffer);
+ }
+
+ if (write)
+ {
+ /* Fill start and end extra bytes of buffer with existing memory
+ data. */
+ if (addr != memaddr || len < (int) sizeof (PTRACE_TYPE_RET))
+ {
+ /* Need part of initial word -- fetch it. */
+ buffer[0] = ptrace (PT_READ_I, PIDGET (inferior_ptid),
+ (PTRACE_TYPE_ARG3) addr, 0);
+ }
+
+ if (count > 1) /* FIXME, avoid if even boundary. */
+ {
+ buffer[count - 1] =
+ ptrace (PT_READ_I, PIDGET (inferior_ptid),
+ ((PTRACE_TYPE_ARG3)
+ (addr + (count - 1) * sizeof (PTRACE_TYPE_RET))), 0);
+ }
+
+ /* Copy data to be written over corresponding part of buffer. */
+ memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)),
+ myaddr, len);
+
+ /* Write the entire buffer. */
+ for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET))
+ {
+ errno = 0;
+ ptrace (PT_WRITE_D, PIDGET (inferior_ptid),
+ (PTRACE_TYPE_ARG3) addr, buffer[i]);
+ if (errno)
+ {
+ /* Using the appropriate one (I or D) is necessary for
+ Gould NP1, at least. */
+ errno = 0;
+ ptrace (PT_WRITE_I, PIDGET (inferior_ptid),
+ (PTRACE_TYPE_ARG3) addr, buffer[i]);
+ }
+ if (errno)
+ return 0;
+ }
+ }
+ else
+ {
+ /* Read all the longwords. */
+ for (i = 0; i < count; i++, addr += sizeof (PTRACE_TYPE_RET))
+ {
+ errno = 0;
+ buffer[i] = ptrace (PT_READ_I, PIDGET (inferior_ptid),
+ (PTRACE_TYPE_ARG3) addr, 0);
+ if (errno)
+ return 0;
+ QUIT;
+ }
+
+ /* Copy appropriate bytes out of the buffer. */
+ memcpy (myaddr,
+ (char *) buffer + (memaddr & (sizeof (PTRACE_TYPE_RET) - 1)),
+ len);
+ }
+
+ if (old_chain != NULL)
+ do_cleanups (old_chain);
+ return len;
+}
+
+/* Wait for child to do something. Return pid of child, or -1 in case
+ of error; store status through argument pointer OURSTATUS. */
+
+static ptid_t
+inf_ptrace_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
+{
+ int save_errno;
+ int status;
+ char *execd_pathname = NULL;
+ int exit_status;
+ int related_pid;
+ int syscall_id;
+ enum target_waitkind kind;
+ int pid;
+
+ do
+ {
+ set_sigint_trap (); /* Causes SIGINT to be passed on to the
+ attached process. */
+ set_sigio_trap ();
+
+ pid = ptrace_wait (inferior_ptid, &status);
+
+ save_errno = errno;
+
+ clear_sigio_trap ();
+
+ clear_sigint_trap ();
+
+ if (pid == -1)
+ {
+ if (save_errno == EINTR)
+ continue;
+
+ fprintf_unfiltered (gdb_stderr,
+ "Child process unexpectedly missing: %s.\n",
+ safe_strerror (save_errno));
+
+ /* Claim it exited with unknown signal. */
+ ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
+ ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
+ return pid_to_ptid (-1);
+ }
+
+ /* Did it exit?
+ */
+ if (target_has_exited (pid, status, &exit_status))
+ {
+ /* ??rehrauer: For now, ignore this. */
+ continue;
+ }
+
+ if (!target_thread_alive (pid_to_ptid (pid)))
+ {
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ return pid_to_ptid (pid);
+ }
+ }
+ while (pid != PIDGET (inferior_ptid)); /* Some other child died or stopped */
+
+ store_waitstatus (ourstatus, status);
+ return pid_to_ptid (pid);
+}
+
+void
+inf_ptrace_post_wait (ptid_t ptid, int wait_status)
+{
+ /* This version of Unix doesn't require a meaningful "post wait"
+ operation.
+ */
+}
+
+/* Check to see if the given thread is alive.
+
+ FIXME: Is kill() ever the right way to do this? I doubt it, but
+ for now we're going to try and be compatable with the old thread
+ code. */
+
+static int
+inf_ptrace_thread_alive (ptid_t ptid)
+{
+ pid_t pid = PIDGET (ptid);
+
+ return (kill (pid, 0) != -1);
+}
+
+/* Attach to process PID, then initialize for debugging it. */
+
+static void
+inf_ptrace_attach (char *args, int from_tty)
+{
+ char *exec_file;
+ int pid;
+ char *dummy;
+
+ if (!args)
+ error_no_arg ("process-id to attach");
+
+ dummy = args;
+ pid = strtol (args, &dummy, 0);
+ /* Some targets don't set errno on errors, grrr! */
+ if ((pid == 0) && (args == dummy))
+ error ("Illegal process-id: %s\n", args);
+
+ if (pid == getpid ()) /* Trying to masturbate? */
+ error ("I refuse to debug myself!");
+
+ 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);
+ }
+
+ attach (pid);
+
+ inferior_ptid = pid_to_ptid (pid);
+ push_target (ptrace_ops_hack);
+}
+
+static void
+inf_ptrace_post_attach (int pid)
+{
+ /* This version of Unix doesn't require a meaningful "post attach"
+ operation by a debugger. */
+}
+
+/* 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. For this to work, it may be necessary for the
+ process to have been previously attached. It *might* work if the
+ program was started via the normal ptrace (PTRACE_TRACEME). */
+
+static void
+inf_ptrace_detach (char *args, int from_tty)
+{
+ int siggnal = 0;
+ int pid = PIDGET (inferior_ptid);
+
+ 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 (pid_to_ptid (pid)));
+ gdb_flush (gdb_stdout);
+ }
+ if (args)
+ siggnal = atoi (args);
+
+ detach (siggnal);
+
+ inferior_ptid = null_ptid;
+ unpush_target (ptrace_ops_hack);
+}
+
+/* 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, this
+ makes sure that registers contains all the registers from the
+ program being debugged. */
+
+static void
+inf_ptrace_prepare_to_store (void)
+{
+}
+
+/* Print status information about what we're accessing. */
+
+static void
+inf_ptrace_files_info (struct target_ops *ignore)
+{
+ printf_unfiltered ("\tUsing the running image of %s %s.\n",
+ attach_flag ? "attached" : "child",
+ target_pid_to_str (inferior_ptid));
+}
+
+static void
+inf_ptrace_open (char *arg, int from_tty)
+{
+ error ("Use the \"run\" command to start a Unix child process.");
+}
+
+/* Stub function which causes the inferior that runs it, to be ptrace-able
+ by its parent process. */
+
+static void
+inf_ptrace_me (void)
+{
+ /* "Trace me, Dr. Memory!" */
+ call_ptrace (0, 0, (PTRACE_TYPE_ARG3) 0, 0);
+}
+
+/* Stub function which causes the GDB that runs it, to start ptrace-ing
+ the child process. */
+
+static void
+inf_ptrace_him (int pid)
+{
+ push_target (ptrace_ops_hack);
+
+ /* On some targets, there must be some explicit synchronization
+ between the parent and child processes after the debugger
+ forks, and before the child execs the debuggee program. This
+ call basically gives permission for the child to exec.
+ */
+
+ target_acknowledge_created_inferior (pid);
+
+ /* START_INFERIOR_TRAPS_EXPECTED is defined in inferior.h,
+ * and will be 1 or 2 depending on whether we're starting
+ * without or with a shell.
+ */
+ startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
+
+ /* On some targets, there must be some explicit actions taken after
+ the inferior has been started up.
+ */
+ target_post_startup_inferior (pid_to_ptid (pid));
+}
+
+/* Start an inferior Unix child process and sets inferior_ptid to its
+ pid. EXEC_FILE is the file to run. ALLARGS is a string containing
+ the arguments to the program. ENV is the environment vector to
+ pass. Errors reported with error(). */
+
+static void
+inf_ptrace_create_inferior (char *exec_file, char *allargs, char **env,
+ int from_tty)
+{
+ fork_inferior (exec_file, allargs, env, inf_ptrace_me, inf_ptrace_him,
+ NULL, NULL);
+ /* We are at the first instruction we care about. */
+ observer_notify_inferior_created (¤t_target, from_tty);
+ /* Pedal to the metal... */
+ proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
+}
+
+static void
+inf_ptrace_post_startup_inferior (ptid_t ptid)
+{
+ /* This version of Unix doesn't require a meaningful "post startup inferior"
+ operation by a debugger.
+ */
+}
+
+static void
+inf_ptrace_acknowledge_created_inferior (int pid)
+{
+ /* This version of Unix doesn't require a meaningful "acknowledge created inferior"
+ operation by a debugger.
+ */
+}
+
+static int
+inf_ptrace_insert_fork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of fork events. */
+ return 0;
+}
+
+static int
+inf_ptrace_remove_fork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of fork events. */
+ return 0;
+}
+
+static int
+inf_ptrace_insert_vfork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of vfork events. */
+ return 0;
+}
+
+static int
+inf_ptrace_remove_vfork_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of vfork events. */
+ return 0;
+}
+
+static int
+inf_ptrace_follow_fork (int follow_child)
+{
+ /* This version of Unix doesn't support following fork or vfork events. */
+ return 0;
+}
+
+static int
+inf_ptrace_insert_exec_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of exec events. */
+ return 0;
+}
+
+static int
+inf_ptrace_remove_exec_catchpoint (int pid)
+{
+ /* This version of Unix doesn't support notification of exec events. */
+ return 0;
+}
+
+static int
+inf_ptrace_reported_exec_events_per_exec_call (void)
+{
+ /* This version of Unix doesn't support notification of exec events.
+ */
+ return 1;
+}
+
+static int
+inf_ptrace_has_exited (int pid, int wait_status, int *exit_status)
+{
+ if (WIFEXITED (wait_status))
+ {
+ *exit_status = WEXITSTATUS (wait_status);
+ return 1;
+ }
+
+ if (WIFSIGNALED (wait_status))
+ {
+ *exit_status = 0; /* ?? Don't know what else to say here. */
+ return 1;
+ }
+
+ /* ?? Do we really need to consult the event state, too? Assume the
+ wait_state alone suffices.
+ */
+ return 0;
+}
+
+static void
+inf_ptrace_mourn_inferior (void)
+{
+ unpush_target (ptrace_ops_hack);
+ generic_mourn_inferior ();
+}
+
+static int
+inf_ptrace_can_run (void)
+{
+ return 1;
+}
+
+/* Send a SIGINT to the process group. This acts just like the user
+ typed a ^C on the controlling terminal.
+
+ XXX - This may not be correct for all systems. Some may want to
+ use killpg() instead of kill (-pgrp). */
+
+static void
+inf_ptrace_stop (void)
+{
+ kill (-inferior_process_group, SIGINT);
+}
+
+/* Perform a partial transfer to/from the specified object. For
+ memory transfers, fall back to the old memory xfer functions. */
+
+static LONGEST
+inf_ptrace_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, void *readbuf,
+ const void *writebuf, ULONGEST offset, LONGEST len)
+{
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return inf_ptrace_xfer_memory (offset, readbuf, len, 0 /*write */ ,
+ NULL, ops);
+ if (writebuf)
+ return inf_ptrace_xfer_memory (offset, readbuf, len, 1 /*write */ ,
+ NULL, ops);
+ return -1;
+
+ case TARGET_OBJECT_UNWIND_TABLE:
+ return -1;
+
+ case TARGET_OBJECT_AUXV:
+ return -1;
+
+ case TARGET_OBJECT_WCOOKIE:
+ return -1;
+
+ default:
+ return -1;
+ }
+}
+
+static char *
+inf_ptrace_pid_to_str (ptid_t ptid)
+{
+ return normal_pid_to_str (ptid);
+}
+
+struct target_ops *
+inf_ptrace_target (void)
+{
+ struct target_ops *t = inf_child_target ();
+ t->to_open = inf_ptrace_open;
+ t->to_attach = inf_ptrace_attach;
+ t->to_post_attach = inf_ptrace_post_attach;
+ t->to_detach = inf_ptrace_detach;
+ t->to_resume = inf_ptrace_resume;
+ t->to_wait = inf_ptrace_wait;
+ t->to_post_wait = inf_ptrace_post_wait;
+ t->to_prepare_to_store = inf_ptrace_prepare_to_store;
+ t->to_xfer_memory = inf_ptrace_xfer_memory;
+ t->to_xfer_partial = inf_ptrace_xfer_partial;
+ t->to_files_info = inf_ptrace_files_info;
+ t->to_kill = inf_ptrace_kill_inferior;
+ t->to_create_inferior = inf_ptrace_create_inferior;
+ t->to_post_startup_inferior = inf_ptrace_post_startup_inferior;
+ t->to_acknowledge_created_inferior =
+ inf_ptrace_acknowledge_created_inferior;
+ t->to_insert_fork_catchpoint = inf_ptrace_insert_fork_catchpoint;
+ t->to_remove_fork_catchpoint = inf_ptrace_remove_fork_catchpoint;
+ t->to_insert_vfork_catchpoint = inf_ptrace_insert_vfork_catchpoint;
+ t->to_remove_vfork_catchpoint = inf_ptrace_remove_vfork_catchpoint;
+ t->to_follow_fork = inf_ptrace_follow_fork;
+ t->to_insert_exec_catchpoint = inf_ptrace_insert_exec_catchpoint;
+ t->to_remove_exec_catchpoint = inf_ptrace_remove_exec_catchpoint;
+ t->to_reported_exec_events_per_exec_call =
+ inf_ptrace_reported_exec_events_per_exec_call;
+ t->to_has_exited = inf_ptrace_has_exited;
+ t->to_mourn_inferior = inf_ptrace_mourn_inferior;
+ t->to_can_run = inf_ptrace_can_run;
+ t->to_thread_alive = inf_ptrace_thread_alive;
+ t->to_pid_to_str = inf_ptrace_pid_to_str;
+ t->to_stop = inf_ptrace_stop;
+ t->to_stratum = process_stratum;
+ t->to_has_all_memory = 1;
+ t->to_has_memory = 1;
+ t->to_has_stack = 1;
+ t->to_has_registers = 1;
+ t->to_has_execution = 1;
+ t->to_magic = OPS_MAGIC;
+ ptrace_ops_hack = t;
+ return t;
+}
projects / binutils-gdb.git / commitdiff