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/* Default child (native) target interface, for GDB when running under
Unix.
Copyright (C) 1988-1996, 1998-2002, 2004-2005, 2007-2012 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 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 "regcache.h"
#include "memattr.h"
#include "symtab.h"
#include "target.h"
#include "inferior.h"
#include "gdb_string.h"
#include "inf-child.h"
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers. */
static void
inf_child_fetch_inferior_registers (struct target_ops *ops,
struct regcache *regcache, int regnum)
{
if (regnum == -1)
{
for (regnum = 0;
regnum < gdbarch_num_regs (get_regcache_arch (regcache));
regnum++)
regcache_raw_supply (regcache, regnum, NULL);
}
else
regcache_raw_supply (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 (struct target_ops *ops,
struct regcache *regcache, int regnum)
{
}
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 (struct regcache *regcache)
{
}
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 int
inf_child_follow_fork (struct target_ops *ops, int follow_child)
{
/* This version of Unix doesn't support following fork or vfork
events. */
return 0;
}
static int
inf_child_can_run (void)
{
return 1;
}
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;
}
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_fetch_registers = inf_child_fetch_inferior_registers;
t->to_store_registers = inf_child_store_inferior_registers;
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_follow_fork = inf_child_follow_fork;
t->to_can_run = inf_child_can_run;
t->to_pid_to_exec_file = inf_child_pid_to_exec_file;
t->to_stratum = process_stratum;
t->to_has_all_memory = default_child_has_all_memory;
t->to_has_memory = default_child_has_memory;
t->to_has_stack = default_child_has_stack;
t->to_has_registers = default_child_has_registers;
t->to_has_execution = default_child_has_execution;
t->to_magic = OPS_MAGIC;
return t;
}
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