/* BSD Kernel Data Access Library (libkvm) interface.
- Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+ Copyright (C) 2004-2019 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
+#define _KMEMUSER
#include "defs.h"
#include "cli/cli-cmds.h"
#include "command.h"
#include "frame.h"
#include "regcache.h"
#include "target.h"
+#include "process-stratum-target.h"
#include "value.h"
-#include "gdbcore.h" /* for get_exec_file */
+#include "gdbcore.h"
+#include "inferior.h" /* for get_exec_file */
#include "gdbthread.h"
-#include "gdb_assert.h"
#include <fcntl.h>
#include <kvm.h>
#ifdef HAVE_NLIST_H
#include "readline/readline.h"
#include <sys/param.h>
#include <sys/proc.h>
+#ifdef HAVE_SYS_USER_H
#include <sys/user.h>
+#endif
#include "bsd-kvm.h"
register state from PCB and supplies it to REGCACHE. */
static int (*bsd_kvm_supply_pcb)(struct regcache *regcache, struct pcb *pcb);
-/* Target ops for libkvm interface. */
-static struct target_ops bsd_kvm_ops;
-
/* This is the ptid we use while we're connected to kvm. The kvm
target currently doesn't export any view of the running processes,
so this represents the kernel task. */
static ptid_t bsd_kvm_ptid;
+/* The libkvm target. */
+
+static const target_info bsd_kvm_target_info = {
+ "kvm",
+ N_("Kernel memory interface"),
+ N_("Use a kernel virtual memory image as a target.\n\
+Optionally specify the filename of a core dump.")
+};
+
+class bsd_kvm_target final : public process_stratum_target
+{
+public:
+ bsd_kvm_target () = default;
+
+ const target_info &info () const override
+ { return bsd_kvm_target_info; }
+
+ void close () override;
+
+ void fetch_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;
+ bool thread_alive (ptid_t ptid) override;
+ std::string pid_to_str (ptid_t) override;
+
+ bool has_memory () override { return true; }
+ bool has_stack () override { return true; }
+ bool has_registers () override { return true; }
+};
+
+/* Target ops for libkvm interface. */
+static bsd_kvm_target bsd_kvm_ops;
+
static void
-bsd_kvm_open (char *filename, int from_tty)
+bsd_kvm_target_open (const char *arg, int from_tty)
{
char errbuf[_POSIX2_LINE_MAX];
char *execfile = NULL;
kvm_t *temp_kd;
+ char *filename = NULL;
target_preopen (from_tty);
- if (filename)
+ if (arg)
{
- char *temp;
-
- filename = tilde_expand (filename);
+ filename = tilde_expand (arg);
if (filename[0] != '/')
{
- temp = concat (current_directory, "/", filename, (char *)NULL);
+ gdb::unique_xmalloc_ptr<char> temp (gdb_abspath (filename));
+
xfree (filename);
- filename = temp;
+ filename = temp.release ();
}
}
target_fetch_registers (get_current_regcache (), -1);
reinit_frame_cache ();
- print_stack_frame (get_selected_frame (NULL), -1, 1);
+ print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
}
-static void
-bsd_kvm_close (int quitting)
+void
+bsd_kvm_target::close ()
{
if (core_kd)
{
}
inferior_ptid = null_ptid;
- delete_thread_silent (bsd_kvm_ptid);
+ discard_all_inferiors ();
}
static LONGEST
return nbytes;
}
-static LONGEST
-bsd_kvm_xfer_partial (struct target_ops *ops, enum target_object object,
- const char *annex, gdb_byte *readbuf,
- const gdb_byte *writebuf,
- ULONGEST offset, LONGEST len)
+enum target_xfer_status
+bsd_kvm_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 bsd_kvm_xfer_memory (offset, len, readbuf, writebuf);
+ {
+ LONGEST ret = bsd_kvm_xfer_memory (offset, len, readbuf, writebuf);
+
+ if (ret < 0)
+ return TARGET_XFER_E_IO;
+ else if (ret == 0)
+ return TARGET_XFER_EOF;
+ else
+ {
+ *xfered_len = (ULONGEST) ret;
+ return TARGET_XFER_OK;
+ }
+ }
default:
- return -1;
+ return TARGET_XFER_E_IO;
}
}
-static void
-bsd_kvm_files_info (struct target_ops *ops)
+void
+bsd_kvm_target::files_info ()
{
if (bsd_kvm_corefile && strcmp (bsd_kvm_corefile, _PATH_MEM) != 0)
printf_filtered (_("\tUsing the kernel crash dump %s.\n"),
return bsd_kvm_supply_pcb (regcache, &pcb);
}
-static void
-bsd_kvm_fetch_registers (struct regcache *regcache, int regnum)
+void
+bsd_kvm_target::fetch_registers (struct regcache *regcache, int regnum)
{
struct nlist nl[2];
if (nl[0].n_value != 0)
{
- /* Found dumppcb. If it contains a valid context, return
+ /* Found dumppcb. If it contains a valid context, return
immediately. */
if (bsd_kvm_fetch_pcb (regcache, (struct pcb *) nl[0].n_value))
return;
}
#endif
- /* i18n: PCB == "Process Control Block" */
+ /* i18n: PCB == "Process Control Block". */
error (_("Cannot find a valid PCB"));
}
\f
struct cmd_list_element *bsd_kvm_cmdlist;
static void
-bsd_kvm_cmd (char *arg, int fromtty)
+bsd_kvm_cmd (const char *arg, int fromtty)
{
/* ??? Should this become an alias for "target kvm"? */
}
#ifndef HAVE_STRUCT_THREAD_TD_PCB
static void
-bsd_kvm_proc_cmd (char *arg, int fromtty)
+bsd_kvm_proc_cmd (const char *arg, int fromtty)
{
CORE_ADDR addr;
target_fetch_registers (get_current_regcache (), -1);
reinit_frame_cache ();
- print_stack_frame (get_selected_frame (NULL), -1, 1);
+ print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
}
#endif
static void
-bsd_kvm_pcb_cmd (char *arg, int fromtty)
+bsd_kvm_pcb_cmd (const char *arg, int fromtty)
{
if (arg == NULL)
- /* i18n: PCB == "Process Control Block" */
+ /* i18n: PCB == "Process Control Block". */
error_no_arg (_("pcb address"));
if (core_kd == NULL)
target_fetch_registers (get_current_regcache (), -1);
reinit_frame_cache ();
- print_stack_frame (get_selected_frame (NULL), -1, 1);
+ print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
}
-static int
-bsd_kvm_thread_alive (ptid_t ptid)
+bool
+bsd_kvm_target::thread_alive (ptid_t ptid)
{
- return 1;
+ return true;
}
-static char *
-bsd_kvm_pid_to_str (ptid_t ptid)
+std::string
+bsd_kvm_target::pid_to_str (ptid_t ptid)
{
- static char buf[64];
- xsnprintf (buf, sizeof buf, "<kvm>");
- return buf;
+ return "<kvm>";
}
/* Add the libkvm interface to the list of all possible targets and
gdb_assert (bsd_kvm_supply_pcb == NULL);
bsd_kvm_supply_pcb = supply_pcb;
- bsd_kvm_ops.to_shortname = "kvm";
- bsd_kvm_ops.to_longname = _("Kernel memory interface");
- bsd_kvm_ops.to_doc = _("Use a kernel virtual memory image as a target.\n\
-Optionally specify the filename of a core dump.");
- bsd_kvm_ops.to_open = bsd_kvm_open;
- bsd_kvm_ops.to_close = bsd_kvm_close;
- bsd_kvm_ops.to_fetch_registers = bsd_kvm_fetch_registers;
- bsd_kvm_ops.to_xfer_partial = bsd_kvm_xfer_partial;
- bsd_kvm_ops.to_files_info = bsd_kvm_files_info;
- bsd_kvm_ops.to_thread_alive = bsd_kvm_thread_alive;
- bsd_kvm_ops.to_pid_to_str = bsd_kvm_pid_to_str;
- bsd_kvm_ops.to_stratum = process_stratum;
- bsd_kvm_ops.to_has_memory = 1;
- bsd_kvm_ops.to_has_stack = 1;
- bsd_kvm_ops.to_has_registers = 1;
- bsd_kvm_ops.to_magic = OPS_MAGIC;
-
- add_target (&bsd_kvm_ops);
+ add_target (bsd_kvm_target_info, bsd_kvm_target_open);
add_prefix_cmd ("kvm", class_obscure, bsd_kvm_cmd, _("\
Generic command for manipulating the kernel memory interface."),
_("Set current context from proc address"), &bsd_kvm_cmdlist);
#endif
add_cmd ("pcb", class_obscure, bsd_kvm_pcb_cmd,
- /* i18n: PCB == "Process Control Block" */
+ /* i18n: PCB == "Process Control Block". */
_("Set current context from pcb address"), &bsd_kvm_cmdlist);
/* Some notes on the ptid usage on this target.
ptid (1, 1, 0) -> kvm inferior 1, in kernel
ptid (1, 1, 1) -> kvm inferior 1, process 1
ptid (1, 1, 2) -> kvm inferior 1, process 2
- ptid (1, 1, n) -> kvm inferior 1, process n
- */
- bsd_kvm_ptid = ptid_build (1, 1, 0);
+ ptid (1, 1, n) -> kvm inferior 1, process n */
+
+ bsd_kvm_ptid = ptid_t (1, 1, 0);
}
projects / deliverable / binutils-gdb.git / blobdiff