/* Implementation of
gdb.lookup_symbol (name [, block] [, domain]) -> (symbol, is_field_of_this)
A tuple with 2 elements is always returned. The first is the symbol
object or None, the second is a boolean with the value of
is_a_field_of_this (see comment in lookup_symbol_in_language). */
PyObject *
gdbpy_lookup_symbol (PyObject *self, PyObject *args, PyObject *kw)
{
int domain = VAR_DOMAIN, is_a_field_of_this = 0;
const char *name;
static char *keywords[] = { "name", "block", "domain", NULL };
struct symbol *symbol;
PyObject *block_obj = NULL, *ret_tuple, *sym_obj, *bool_obj;
struct block *block = NULL;
if (! PyArg_ParseTupleAndKeywords (args, kw, "s|O!i", keywords, &name,
&block_object_type, &block_obj, &domain))
return NULL;
if (block_obj)
block = block_object_to_block (block_obj);
else
{
struct frame_info *selected_frame;
volatile struct gdb_exception except;
TRY_CATCH (except, RETURN_MASK_ALL)
{
selected_frame = get_selected_frame (_("No frame selected."));
block = block_for_pc (get_frame_address_in_block (selected_frame));
}
GDB_PY_HANDLE_EXCEPTION (except);
}
static void
fetch_probe_arguments (struct value **arg0, struct value **arg1)
{
struct frame_info *frame = get_selected_frame (_("No frame selected"));
CORE_ADDR pc = get_frame_pc (frame);
struct bound_probe pc_probe;
unsigned n_args;
pc_probe = find_probe_by_pc (pc);
if (pc_probe.prob == NULL
|| pc_probe.prob->get_provider () != "libstdcxx"
|| (pc_probe.prob->get_name () != "catch"
&& pc_probe.prob->get_name () != "throw"
&& pc_probe.prob->get_name () != "rethrow"))
error (_("not stopped at a C++ exception catchpoint"));
n_args = pc_probe.prob->get_argument_count (frame);
if (n_args < 2)
error (_("C++ exception catchpoint has too few arguments"));
if (arg0 != NULL)
*arg0 = pc_probe.prob->evaluate_argument (0, frame);
*arg1 = pc_probe.prob->evaluate_argument (1, frame);
if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL)
error (_("error computing probe argument at c++ exception catchpoint"));
}
/* Print a list of the locals for the current frame. With argument of
0, print only the names, with argument of 1 print also the
values. */
enum mi_cmd_result
mi_cmd_stack_list_locals (char *command, char **argv, int argc)
{
struct frame_info *frame;
enum print_values print_values;
if (argc != 1)
error ("mi_cmd_stack_list_locals: Usage: PRINT_VALUES");
frame = get_selected_frame ();
if (strcmp (argv[0], "0") == 0
|| strcmp (argv[0], "--no-values") == 0)
print_values = PRINT_NO_VALUES;
else if (strcmp (argv[0], "1") == 0
|| strcmp (argv[0], "--all-values") == 0)
print_values = PRINT_ALL_VALUES;
else if (strcmp (argv[0], "2") == 0
|| strcmp (argv[0], "--simple-values") == 0)
print_values = PRINT_SIMPLE_VALUES;
else
error ("Unknown value for PRINT_VALUES: must be: 0 or \"--no-values\", 1 or \"--all-values\", 2 or \"--simple-values\"");
list_args_or_locals (1, print_values, frame);
return MI_CMD_DONE;
}
/* Show command. Display a warning if the language set
does not match the frame. */
static void
show_language_command (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
enum language flang; /* The language of the frame. */
if (language_mode == language_mode_auto)
fprintf_filtered (gdb_stdout,
_("The current source language is "
"\"auto; currently %s\".\n"),
current_language->la_name);
else
fprintf_filtered (gdb_stdout,
_("The current source language is \"%s\".\n"),
current_language->la_name);
if (has_stack_frames ())
{
struct frame_info *frame;
frame = get_selected_frame (NULL);
flang = get_frame_language (frame);
if (flang != language_unknown
&& language_mode == language_mode_manual
&& current_language->la_language != flang)
printf_filtered ("%s\n", lang_frame_mismatch_warn);
}
}
static void
kill_command (char *arg, int from_tty)
{
/* FIXME: This should not really be inferior_ptid (or target_has_execution).
It should be a distinct flag that indicates that a target is active, cuz
some targets don't have processes! */
if (ptid_equal (inferior_ptid, null_ptid))
error ("The program is not being run.");
if (!query ("Kill the program being debugged? "))
error ("Not confirmed.");
target_kill ();
init_thread_list (); /* Destroy thread info */
/* Killing off the inferior can leave us with a core file. If so,
print the state we are left in. */
if (target_has_stack)
{
printf_filtered ("In %s,\n", target_longname);
if (deprecated_selected_frame == NULL)
fputs_filtered ("No selected stack frame.\n", gdb_stdout);
else
print_stack_frame (get_selected_frame (), 1, SRC_AND_LOC);
}
bfd_cache_close_all ();
}
static void
fetch_probe_arguments (struct value **arg0, struct value **arg1)
{
struct frame_info *frame = get_selected_frame (_("No frame selected"));
CORE_ADDR pc = get_frame_pc (frame);
struct bound_probe pc_probe;
const struct sym_probe_fns *pc_probe_fns;
unsigned n_args;
pc_probe = find_probe_by_pc (pc);
if (pc_probe.probe == NULL
|| strcmp (pc_probe.probe->provider, "libstdcxx") != 0
|| (strcmp (pc_probe.probe->name, "catch") != 0
&& strcmp (pc_probe.probe->name, "throw") != 0
&& strcmp (pc_probe.probe->name, "rethrow") != 0))
error (_("not stopped at a C++ exception catchpoint"));
n_args = get_probe_argument_count (pc_probe.probe, frame);
if (n_args < 2)
error (_("C++ exception catchpoint has too few arguments"));
if (arg0 != NULL)
*arg0 = evaluate_probe_argument (pc_probe.probe, 0, frame);
*arg1 = evaluate_probe_argument (pc_probe.probe, 1, frame);
if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL)
error (_("error computing probe argument at c++ exception catchpoint"));
}
void
mi_cmd_stack_list_variables (char *command, char **argv, int argc)
{
struct frame_info *frame;
int raw_arg = 0;
enum py_bt_status result = PY_BT_ERROR;
int print_value;
if (argc > 0)
raw_arg = parse_no_frames_option (argv[0]);
if (argc < 1 || argc > 2 || (argc == 2 && ! raw_arg)
|| (argc == 1 && raw_arg))
error (_("-stack-list-variables: Usage: " \
"[--no-frame-filters] PRINT_VALUES"));
frame = get_selected_frame (NULL);
print_value = mi_parse_print_values (argv[raw_arg]);
if (! raw_arg && frame_filters)
{
int flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS;
result = apply_frame_filter (frame, flags, print_value,
current_uiout, 0, 0);
}
/* Run the inbuilt backtrace if there are no filters registered, or
if "--no-frame-filters" has been specified from the command. */
if (! frame_filters || raw_arg || result == PY_BT_NO_FILTERS)
{
list_args_or_locals (all, print_value, frame);
}
}
/* Return "current" architecture. If the target is running, this is
the architecture of the selected frame. Otherwise, the "current"
architecture defaults to the target architecture.
This function should normally be called solely by the command
interpreter routines to determine the architecture to execute a
command in. */
struct gdbarch *
get_current_arch (void)
{
if (has_stack_frames ())
return get_frame_arch (get_selected_frame (NULL));
else
return target_gdbarch ();
}
static void
mi_on_normal_stop (struct bpstats *bs, int print_frame)
{
/* Since this can be called when CLI command is executing,
using cli interpreter, be sure to use MI uiout for output,
not the current one. */
struct ui_out *mi_uiout = interp_ui_out (top_level_interpreter ());
if (print_frame)
{
int core;
if (current_uiout != mi_uiout)
{
/* The normal_stop function has printed frame information
into CLI uiout, or some other non-MI uiout. There's no
way we can extract proper fields from random uiout
object, so we print the frame again. In practice, this
can only happen when running a CLI command in MI. */
struct ui_out *saved_uiout = current_uiout;
struct target_waitstatus last;
ptid_t last_ptid;
current_uiout = mi_uiout;
get_last_target_status (&last_ptid, &last);
bpstat_print (bs, last.kind);
print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC, 1);
current_uiout = saved_uiout;
}
ui_out_field_int (mi_uiout, "thread-id",
pid_to_thread_id (inferior_ptid));
if (non_stop)
{
struct cleanup *back_to = make_cleanup_ui_out_list_begin_end
(mi_uiout, "stopped-threads");
ui_out_field_int (mi_uiout, NULL,
pid_to_thread_id (inferior_ptid));
do_cleanups (back_to);
}
else
ui_out_field_string (mi_uiout, "stopped-threads", "all");
core = target_core_of_thread (inferior_ptid);
if (core != -1)
ui_out_field_int (mi_uiout, "core", core);
}
fputs_unfiltered ("*stopped", raw_stdout);
mi_out_put (mi_uiout, raw_stdout);
mi_out_rewind (mi_uiout);
mi_print_timing_maybe ();
fputs_unfiltered ("\n", raw_stdout);
gdb_flush (raw_stdout);
}
/* Called from print_frame_info to list the line we stopped in. */
static void
tui_print_frame_info_listing_hook (struct symtab *s,
int line,
int stopline,
int noerror)
{
select_source_symtab (s);
tui_show_frame_info (get_selected_frame (NULL));
}
static int
there_is_a_visible_common_named (char *comname)
{
SAVED_F77_COMMON_PTR the_common;
struct frame_info *fi;
char *funname = 0;
struct symbol *func;
if (comname == NULL)
error (_("Cannot deal with NULL common name!"));
fi = get_selected_frame (_("No frame selected"));
/* The following is generally ripped off from stack.c's routine
print_frame_info() */
func = find_pc_function (fi->pc);
if (func)
{
/* In certain pathological cases, the symtabs give the wrong
function (when we are in the first function in a file which
is compiled without debugging symbols, the previous function
is compiled with debugging symbols, and the "foo.o" symbol
that is supposed to tell us where the file with debugging symbols
ends has been truncated by ar because it is longer than 15
characters).
So look in the minimal symbol tables as well, and if it comes
up with a larger address for the function use that instead.
I don't think this can ever cause any problems; there shouldn't
be any minimal symbols in the middle of a function.
FIXME: (Not necessarily true. What about text labels) */
struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
if (msymbol != NULL
&& (SYMBOL_VALUE_ADDRESS (msymbol)
> BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
funname = SYMBOL_LINKAGE_NAME (msymbol);
else
funname = SYMBOL_LINKAGE_NAME (func);
}
else
{
struct minimal_symbol *msymbol =
lookup_minimal_symbol_by_pc (fi->pc);
if (msymbol != NULL)
funname = SYMBOL_LINKAGE_NAME (msymbol);
}
the_common = find_common_for_function (comname, funname);
return (the_common ? 1 : 0);
}
static void
record_btrace_goto_end (struct target_ops *ops)
{
struct thread_info *tp;
tp = require_btrace_thread ();
record_btrace_set_replay (tp, NULL);
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
}
static void
tui_register_changed_hook (int regno)
{
struct frame_info *fi;
fi = get_selected_frame (NULL);
if (tui_refreshing_registers == 0)
{
tui_refreshing_registers = 1;
tui_check_data_values (fi);
tui_refreshing_registers = 0;
}
}
static void
record_btrace_goto_begin (struct target_ops *self)
{
struct thread_info *tp;
struct btrace_insn_iterator begin;
tp = require_btrace_thread ();
btrace_insn_begin (&begin, &tp->btrace);
record_btrace_set_replay (tp, &begin);
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
}
/* Show the registers of the given group in the data window
and refresh the window. */
void
tui_show_registers (struct reggroup *group)
{
enum tui_status ret = TUI_FAILURE;
struct tui_data_info *display_info;
/* Make sure the curses mode is enabled. */
tui_enable ();
/* Make sure the register window is visible. If not, select an
appropriate layout. */
if (TUI_DATA_WIN == NULL || !TUI_DATA_WIN->generic.is_visible)
tui_set_layout_for_display_command (DATA_NAME);
display_info = &TUI_DATA_WIN->detail.data_display_info;
if (group == 0)
group = general_reggroup;
/* Say that registers should be displayed, even if there is a
problem. */
display_info->display_regs = TRUE;
if (target_has_registers && target_has_stack && target_has_memory)
{
ret = tui_show_register_group (group, get_selected_frame (NULL),
group == display_info->current_group);
}
if (ret == TUI_FAILURE)
{
display_info->current_group = 0;
tui_erase_data_content (NO_REGS_STRING);
}
else
{
int i;
/* Clear all notation of changed values. */
for (i = 0; i < display_info->regs_content_count; i++)
{
struct tui_gen_win_info *data_item_win;
struct tui_win_element *win;
data_item_win = &display_info->regs_content[i]
->which_element.data_window;
win = (struct tui_win_element *) data_item_win->content[0];
win->which_element.data.highlight = FALSE;
}
display_info->current_group = group;
tui_display_all_data ();
}
}
/* Output one register's contents in the desired format. */
static int
get_register (int regnum, int format)
{
gdb_byte buffer[MAX_REGISTER_SIZE];
int optim;
int realnum;
CORE_ADDR addr;
enum lval_type lval;
static struct ui_stream *stb = NULL;
stb = ui_out_stream_new (uiout);
if (format == 'N')
format = 0;
frame_register (get_selected_frame (NULL), regnum, &optim, &lval, &addr,
&realnum, buffer);
if (optim)
{
mi_error_message = xstrprintf ("Optimized out");
return -1;
}
if (format == 'r')
{
int j;
char *ptr, buf[1024];
strcpy (buf, "0x");
ptr = buf + 2;
for (j = 0; j < register_size (current_gdbarch, regnum); j++)
{
int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j
: register_size (current_gdbarch, regnum) - 1 - j;
sprintf (ptr, "%02x", (unsigned char) buffer[idx]);
ptr += 2;
}
ui_out_field_string (uiout, "value", buf);
/*fputs_filtered (buf, gdb_stdout); */
}
else
{
val_print (register_type (current_gdbarch, regnum), buffer, 0, 0,
stb->stream, format, 1, 0, Val_pretty_default);
ui_out_field_stream (uiout, "value", stb);
ui_out_stream_delete (stb);
}
return 1;
}
/* Set command. Change the current working language. */
static void
set_language_command (char *ignore, int from_tty, struct cmd_list_element *c)
{
int i;
enum language flang = language_unknown;
/* Search the list of languages for a match. */
for (i = 0; i < languages_size; i++)
{
if (strcmp (languages[i]->la_name, language) == 0)
{
/* Found it! Go into manual mode, and use this language. */
if (languages[i]->la_language == language_auto)
{
/* Enter auto mode. Set to the current frame's language, if
known, or fallback to the initial language. */
language_mode = language_mode_auto;
TRY
{
struct frame_info *frame;
frame = get_selected_frame (NULL);
flang = get_frame_language (frame);
}
CATCH (ex, RETURN_MASK_ERROR)
{
flang = language_unknown;
}
END_CATCH
if (flang != language_unknown)
set_language (flang);
else
set_initial_language ();
expected_language = current_language;
return;
}
else
{
/* Enter manual mode. Set the specified language. */
language_mode = language_mode_manual;
current_language = languages[i];
set_range_case ();
expected_language = current_language;
return;
}
}
static void
tui_refresh_frame_and_register_information (int registers_too_p)
{
struct frame_info *fi;
CORE_ADDR pc;
struct cleanup *old_chain;
int frame_info_changed_p;
if (!has_stack_frames ())
return;
old_chain = make_cleanup_restore_target_terminal ();
target_terminal_ours_for_output ();
fi = get_selected_frame (NULL);
/* Ensure that symbols for this frame are read in. Also, determine
the source language of this frame, and switch to it if
desired. */
if (get_frame_pc_if_available (fi, &pc))
{
struct symtab *s;
s = find_pc_line_symtab (pc);
/* elz: This if here fixes the problem with the pc not being
displayed in the tui asm layout, with no debug symbols. The
value of s would be 0 here, and select_source_symtab would
abort the command by calling the 'error' function. */
if (s)
select_source_symtab (s);
}
/* Display the frame position (even if there is no symbols or the PC
is not known). */
frame_info_changed_p = tui_show_frame_info (fi);
/* Refresh the register window if it's visible. */
if (tui_is_window_visible (DATA_WIN)
&& (frame_info_changed_p || registers_too_p))
{
tui_refreshing_registers = 1;
tui_check_data_values (fi);
tui_refreshing_registers = 0;
}
do_cleanups (old_chain);
}
static void
tui_register_changed (struct frame_info *frame, int regno)
{
struct frame_info *fi;
/* The frame of the register that was changed may differ from the selected
frame, but we only want to show the register values of the selected frame.
And even if the frames differ a register change made in one can still show
up in the other. So we always use the selected frame here, and ignore
FRAME. */
fi = get_selected_frame (NULL);
if (tui_refreshing_registers == 0)
{
tui_refreshing_registers = 1;
tui_check_data_values (fi);
tui_refreshing_registers = 0;
}
}
static int
register_changed_p (int regnum)
{
gdb_byte raw_buffer[MAX_REGISTER_SIZE];
if (! frame_register_read (get_selected_frame (NULL), regnum, raw_buffer))
return -1;
if (memcmp (&old_regs[DEPRECATED_REGISTER_BYTE (regnum)], raw_buffer,
register_size (current_gdbarch, regnum)) == 0)
return 0;
/* Found a changed register. Return 1. */
memcpy (&old_regs[DEPRECATED_REGISTER_BYTE (regnum)], raw_buffer,
register_size (current_gdbarch, regnum));
return 1;
}
enum mi_cmd_result
mi_cmd_exec_return (char *args, int from_tty)
{
/* This command doesn't really execute the target, it just pops the
specified number of frames. */
if (*args)
/* Call return_command with from_tty argument equal to 0 so as to
avoid being queried. */
return_command (args, 0);
else
/* Call return_command with from_tty argument equal to 0 so as to
avoid being queried. */
return_command (NULL, 0);
/* Because we have called return_command with from_tty = 0, we need
to print the frame here. */
print_stack_frame (get_selected_frame (NULL), 1, LOC_AND_ADDRESS);
return MI_CMD_DONE;
}
static void
register_changed_p (int regnum, map_arg arg)
{
char raw_buffer[MAX_REGISTER_SIZE];
if (!target_has_registers
|| !frame_register_read (get_selected_frame (NULL), regnum, raw_buffer))
return;
if (memcmp (&old_regs[regnum * MAX_REGISTER_SIZE], raw_buffer,
register_size (get_current_arch (), regnum)) == 0)
return;
/* Found a changed register. Save new value and return its number. */
memcpy (&old_regs[regnum * MAX_REGISTER_SIZE], raw_buffer,
register_size (get_current_arch (), regnum));
Tcl_ListObjAppendElement (NULL, result_ptr->obj_ptr, Tcl_NewIntObj (regnum));
}
/* Scroll the source forward or backward horizontally. */
void
tui_horizontal_source_scroll (struct tui_win_info *win_info,
enum tui_scroll_direction direction,
int num_to_scroll)
{
if (win_info->generic.content != NULL)
{
struct gdbarch *gdbarch = win_info->detail.source_info.gdbarch;
int offset;
struct symtab *s = NULL;
if (win_info->generic.type == SRC_WIN)
{
struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
if (cursal.symtab == NULL)
s = find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL)));
else
s = cursal.symtab;
}
if (direction == LEFT_SCROLL)
offset = win_info->detail.source_info.horizontal_offset
+ num_to_scroll;
else
{
offset = win_info->detail.source_info.horizontal_offset
- num_to_scroll;
if (offset < 0)
offset = 0;
}
win_info->detail.source_info.horizontal_offset = offset;
tui_update_source_window_as_is (win_info, gdbarch, s,
win_info->generic.content[0]
->which_element.source.line_or_addr,
FALSE);
}
return;
}
/* Scroll the source forward or backward vertically. */
void
tui_vertical_source_scroll (enum tui_scroll_direction scroll_direction,
int num_to_scroll)
{
if (TUI_SRC_WIN->generic.content != NULL)
{
struct tui_line_or_address l;
struct symtab *s;
tui_win_content content = (tui_win_content) TUI_SRC_WIN->generic.content;
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
if (cursal.symtab == (struct symtab *) NULL)
s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
else
s = cursal.symtab;
l.loa = LOA_LINE;
if (scroll_direction == FORWARD_SCROLL)
{
l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no
+ num_to_scroll;
if (l.u.line_no > s->nlines)
/* line = s->nlines - win_info->generic.content_size + 1; */
/* elz: fix for dts 23398. */
l.u.line_no
= content[0]->which_element.source.line_or_addr.u.line_no;
}
else
{
l.u.line_no = content[0]->which_element.source.line_or_addr.u.line_no
- num_to_scroll;
if (l.u.line_no <= 0)
l.u.line_no = 1;
}
print_source_lines (s, l.u.line_no, l.u.line_no + 1, 0);
}
}
/* The selected frame has changed. This is happens after a target
stop or when the user explicitly changes the frame
(up/down/thread/...). */
static void
tui_selected_frame_level_changed_hook (int level)
{
struct frame_info *fi;
/* Negative level means that the selected frame was cleared. */
if (level < 0)
return;
fi = get_selected_frame (NULL);
/* Ensure that symbols for this frame are read in. Also, determine
the source language of this frame, and switch to it if
desired. */
if (fi)
{
struct symtab *s;
s = find_pc_symtab (get_frame_pc (fi));
/* elz: This if here fixes the problem with the pc not being
displayed in the tui asm layout, with no debug symbols. The
value of s would be 0 here, and select_source_symtab would
abort the command by calling the 'error' function. */
if (s)
select_source_symtab (s);
/* Display the frame position (even if there is no symbols). */
tui_show_frame_info (fi);
/* Refresh the register window if it's visible. */
if (tui_is_window_visible (DATA_WIN))
{
tui_refreshing_registers = 1;
tui_check_data_values (fi);
tui_refreshing_registers = 0;
}
}
}
static void
record_btrace_goto (struct target_ops *self, ULONGEST insn)
{
struct thread_info *tp;
struct btrace_insn_iterator it;
unsigned int number;
int found;
number = insn;
/* Check for wrap-arounds. */
if (number != insn)
error (_("Instruction number out of range."));
tp = require_btrace_thread ();
found = btrace_find_insn_by_number (&it, &tp->btrace, number);
if (found == 0)
error (_("No such instruction."));
record_btrace_set_replay (tp, &it);
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
}
static void
core_open (char *filename, int from_tty)
{
const char *p;
int siggy;
struct cleanup *old_chain;
char *temp;
bfd *temp_bfd;
int scratch_chan;
int flags;
volatile struct gdb_exception except;
target_preopen (from_tty);
if (!filename)
{
if (core_bfd)
error (_("No core file specified. (Use `detach' "
"to stop debugging a core file.)"));
else
error (_("No core file specified."));
}
filename = tilde_expand (filename);
if (!IS_ABSOLUTE_PATH (filename))
{
temp = concat (current_directory, "/",
filename, (char *) NULL);
xfree (filename);
filename = temp;
}
old_chain = make_cleanup (xfree, filename);
flags = O_BINARY | O_LARGEFILE;
if (write_files)
flags |= O_RDWR;
else
flags |= O_RDONLY;
scratch_chan = open (filename, flags, 0);
if (scratch_chan < 0)
perror_with_name (filename);
temp_bfd = bfd_fopen (filename, gnutarget,
write_files ? FOPEN_RUB : FOPEN_RB,
scratch_chan);
if (temp_bfd == NULL)
perror_with_name (filename);
if (!bfd_check_format (temp_bfd, bfd_core)
&& !gdb_check_format (temp_bfd))
{
/* Do it after the err msg */
/* FIXME: should be checking for errors from bfd_close (for one
thing, on error it does not free all the storage associated
with the bfd). */
make_cleanup_bfd_close (temp_bfd);
error (_("\"%s\" is not a core dump: %s"),
filename, bfd_errmsg (bfd_get_error ()));
}
/* Looks semi-reasonable. Toss the old core file and work on the
new. */
discard_cleanups (old_chain); /* Don't free filename any more */
unpush_target (&core_ops);
core_bfd = temp_bfd;
old_chain = make_cleanup (core_close_cleanup, 0 /*ignore*/);
/* FIXME: kettenis/20031023: This is very dangerous. The
CORE_GDBARCH that results from this call may very well be
different from CURRENT_GDBARCH. However, its methods may only
work if it is selected as the current architecture, because they
rely on swapped data (see gdbarch.c). We should get rid of that
swapped data. */
core_gdbarch = gdbarch_from_bfd (core_bfd);
/* Find a suitable core file handler to munch on core_bfd */
core_vec = sniff_core_bfd (core_bfd);
validate_files ();
core_data = XZALLOC (struct target_section_table);
/* Find the data section */
if (build_section_table (core_bfd,
&core_data->sections,
&core_data->sections_end))
error (_("\"%s\": Can't find sections: %s"),
bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
/* If we have no exec file, try to set the architecture from the
core file. We don't do this unconditionally since an exec file
typically contains more information that helps us determine the
architecture than a core file. */
if (!exec_bfd)
set_gdbarch_from_file (core_bfd);
push_target (&core_ops);
discard_cleanups (old_chain);
/* Do this before acknowledging the inferior, so if
post_create_inferior throws (can happen easilly if you're loading
a core file with the wrong exec), we aren't left with threads
from the previous inferior. */
init_thread_list ();
inferior_ptid = null_ptid;
/* Need to flush the register cache (and the frame cache) from a
previous debug session. If inferior_ptid ends up the same as the
last debug session --- e.g., b foo; run; gcore core1; step; gcore
core2; core core1; core core2 --- then there's potential for
get_current_regcache to return the cached regcache of the
previous session, and the frame cache being stale. */
registers_changed ();
/* Build up thread list from BFD sections, and possibly set the
current thread to the .reg/NN section matching the .reg
section. */
bfd_map_over_sections (core_bfd, add_to_thread_list,
bfd_get_section_by_name (core_bfd, ".reg"));
if (ptid_equal (inferior_ptid, null_ptid))
{
/* Either we found no .reg/NN section, and hence we have a
non-threaded core (single-threaded, from gdb's perspective),
or for some reason add_to_thread_list couldn't determine
which was the "main" thread. The latter case shouldn't
usually happen, but we're dealing with input here, which can
always be broken in different ways. */
struct thread_info *thread = first_thread_of_process (-1);
if (thread == NULL)
{
inferior_appeared (current_inferior (), CORELOW_PID);
inferior_ptid = pid_to_ptid (CORELOW_PID);
add_thread_silent (inferior_ptid);
}
else
switch_to_thread (thread->ptid);
}
post_create_inferior (&core_ops, from_tty);
/* Now go through the target stack looking for threads since there
may be a thread_stratum target loaded on top of target core by
now. The layer above should claim threads found in the BFD
sections. */
TRY_CATCH (except, RETURN_MASK_ERROR)
{
target_find_new_threads ();
}
if (except.reason < 0)
exception_print (gdb_stderr, except);
p = bfd_core_file_failing_command (core_bfd);
if (p)
printf_filtered (_("Core was generated by `%s'.\n"), p);
siggy = bfd_core_file_failing_signal (core_bfd);
if (siggy > 0)
{
/* If we don't have a CORE_GDBARCH to work with, assume a native
core (map gdb_signal from host signals). If we do have
CORE_GDBARCH to work with, but no gdb_signal_from_target
implementation for that gdbarch, as a fallback measure,
assume the host signal mapping. It'll be correct for native
cores, but most likely incorrect for cross-cores. */
enum gdb_signal sig = (core_gdbarch != NULL
&& gdbarch_gdb_signal_from_target_p (core_gdbarch)
? gdbarch_gdb_signal_from_target (core_gdbarch,
siggy)
: gdb_signal_from_host (siggy));
printf_filtered (_("Program terminated with signal %d, %s.\n"),
siggy, gdb_signal_to_string (sig));
}
/* Fetch all registers from core file. */
target_fetch_registers (get_current_regcache (), -1);
/* Now, set up the frame cache, and print the top of stack. */
reinit_frame_cache ();
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
}
static void
kgdb_trgt_open(char *filename, int from_tty)
{
struct cleanup *old_chain;
struct thread_info *ti;
struct kthr *kt;
kvm_t *nkvm;
char *temp;
int ontop;
target_preopen (from_tty);
if (!filename)
error ("No vmcore file specified.");
if (!exec_bfd)
error ("Can't open a vmcore without a kernel");
filename = tilde_expand (filename);
if (filename[0] != '/') {
temp = concat (current_directory, "/", filename, NULL);
xfree(filename);
filename = temp;
}
old_chain = make_cleanup (xfree, filename);
nkvm = kvm_openfiles(bfd_get_filename(exec_bfd), filename, NULL,
write_files ? O_RDWR : O_RDONLY, kvm_err);
if (nkvm == NULL)
error ("Failed to open vmcore: %s", kvm_err);
/* Don't free the filename now and close any previous vmcore. */
discard_cleanups(old_chain);
unpush_target(&kgdb_trgt_ops);
kvm = nkvm;
vmcore = filename;
old_chain = make_cleanup(kgdb_core_cleanup, NULL);
ontop = !push_target (&kgdb_trgt_ops);
discard_cleanups (old_chain);
kgdb_dmesg();
init_thread_list();
kt = kgdb_thr_init();
while (kt != NULL) {
ti = add_thread(pid_to_ptid(kt->tid));
kt = kgdb_thr_next(kt);
}
if (curkthr != 0)
inferior_ptid = pid_to_ptid(curkthr->tid);
if (ontop) {
/* XXX: fetch registers? */
kld_init();
flush_cached_frames();
select_frame (get_current_frame());
print_stack_frame(get_selected_frame(),
frame_relative_level(get_selected_frame()), 1);
} else
warning(
"you won't be able to access this vmcore until you terminate\n\
your %s; do ``info files''", target_longname);
}
static void
convert_one_symbol (struct compile_c_instance *context,
struct symbol *sym,
int is_global,
int is_local)
{
gcc_type sym_type;
const char *filename = symbol_symtab (sym)->filename;
unsigned short line = SYMBOL_LINE (sym);
error_symbol_once (context, sym);
if (SYMBOL_CLASS (sym) == LOC_LABEL)
sym_type = 0;
else
sym_type = convert_type (context, SYMBOL_TYPE (sym));
if (SYMBOL_DOMAIN (sym) == STRUCT_DOMAIN)
{
/* Binding a tag, so we don't need to build a decl. */
C_CTX (context)->c_ops->tagbind (C_CTX (context),
SYMBOL_NATURAL_NAME (sym),
sym_type, filename, line);
}
else
{
gcc_decl decl;
enum gcc_c_symbol_kind kind;
CORE_ADDR addr = 0;
char *symbol_name = NULL;
switch (SYMBOL_CLASS (sym))
{
case LOC_TYPEDEF:
kind = GCC_C_SYMBOL_TYPEDEF;
break;
case LOC_LABEL:
kind = GCC_C_SYMBOL_LABEL;
addr = SYMBOL_VALUE_ADDRESS (sym);
break;
case LOC_BLOCK:
kind = GCC_C_SYMBOL_FUNCTION;
addr = BLOCK_START (SYMBOL_BLOCK_VALUE (sym));
if (is_global && TYPE_GNU_IFUNC (SYMBOL_TYPE (sym)))
addr = gnu_ifunc_resolve_addr (target_gdbarch (), addr);
break;
case LOC_CONST:
if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_ENUM)
{
/* Already handled by convert_enum. */
return;
}
C_CTX (context)->c_ops->build_constant (C_CTX (context), sym_type,
SYMBOL_NATURAL_NAME (sym),
SYMBOL_VALUE (sym),
filename, line);
return;
case LOC_CONST_BYTES:
error (_("Unsupported LOC_CONST_BYTES for symbol \"%s\"."),
SYMBOL_PRINT_NAME (sym));
case LOC_UNDEF:
internal_error (__FILE__, __LINE__, _("LOC_UNDEF found for \"%s\"."),
SYMBOL_PRINT_NAME (sym));
case LOC_COMMON_BLOCK:
error (_("Fortran common block is unsupported for compilation "
"evaluaton of symbol \"%s\"."),
SYMBOL_PRINT_NAME (sym));
case LOC_OPTIMIZED_OUT:
error (_("Symbol \"%s\" cannot be used for compilation evaluation "
"as it is optimized out."),
SYMBOL_PRINT_NAME (sym));
case LOC_COMPUTED:
if (is_local)
goto substitution;
/* Probably TLS here. */
warning (_("Symbol \"%s\" is thread-local and currently can only "
"be referenced from the current thread in "
"compiled code."),
SYMBOL_PRINT_NAME (sym));
/* FALLTHROUGH */
case LOC_UNRESOLVED:
/* 'symbol_name' cannot be used here as that one is used only for
local variables from compile_dwarf_expr_to_c.
Global variables can be accessed by GCC only by their address, not
by their name. */
{
struct value *val;
struct frame_info *frame = NULL;
if (symbol_read_needs_frame (sym))
{
frame = get_selected_frame (NULL);
if (frame == NULL)
error (_("Symbol \"%s\" cannot be used because "
"there is no selected frame"),
SYMBOL_PRINT_NAME (sym));
}
val = read_var_value (sym, frame);
if (VALUE_LVAL (val) != lval_memory)
error (_("Symbol \"%s\" cannot be used for compilation "
"evaluation as its address has not been found."),
SYMBOL_PRINT_NAME (sym));
kind = GCC_C_SYMBOL_VARIABLE;
addr = value_address (val);
}
break;
case LOC_REGISTER:
case LOC_ARG:
case LOC_REF_ARG:
case LOC_REGPARM_ADDR:
case LOC_LOCAL:
substitution:
kind = GCC_C_SYMBOL_VARIABLE;
symbol_name = symbol_substitution_name (sym);
break;
case LOC_STATIC:
kind = GCC_C_SYMBOL_VARIABLE;
addr = SYMBOL_VALUE_ADDRESS (sym);
break;
case LOC_FINAL_VALUE:
default:
gdb_assert_not_reached ("Unreachable case in convert_one_symbol.");
}
/* Don't emit local variable decls for a raw expression. */
if (context->base.scope != COMPILE_I_RAW_SCOPE
|| symbol_name == NULL)
{
decl = C_CTX (context)->c_ops->build_decl (C_CTX (context),
SYMBOL_NATURAL_NAME (sym),
kind,
sym_type,
symbol_name, addr,
filename, line);
C_CTX (context)->c_ops->bind (C_CTX (context), decl, is_global);
}
xfree (symbol_name);
}
}
void
mi_cmd_stack_list_variables (char *command, char **argv, int argc)
{
struct frame_info *frame;
int raw_arg = 0;
enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
enum print_values print_value;
int oind = 0;
int skip_unavailable = 0;
if (argc > 1)
{
int i;
enum opt
{
NO_FRAME_FILTERS,
SKIP_UNAVAILABLE,
};
static const struct mi_opt opts[] =
{
{"-no-frame-filters", NO_FRAME_FILTERS, 0},
{"-skip-unavailable", SKIP_UNAVAILABLE, 0},
{ 0, 0, 0 }
};
while (1)
{
char *oarg;
/* Don't parse 'print-values' as an option. */
int opt = mi_getopt ("-stack-list-variables", argc - 1,
argv, opts, &oind, &oarg);
if (opt < 0)
break;
switch ((enum opt) opt)
{
case NO_FRAME_FILTERS:
raw_arg = oind;
break;
case SKIP_UNAVAILABLE:
skip_unavailable = 1;
break;
}
}
}
/* After the last option is parsed, there should be only
'print-values'. */
if (argc - oind != 1)
error (_("-stack-list-variables: Usage: [--no-frame-filters] " \
"[--skip-unavailable] PRINT_VALUES"));
frame = get_selected_frame (NULL);
print_value = mi_parse_print_values (argv[oind]);
if (! raw_arg && frame_filters)
{
int flags = PRINT_LEVEL | PRINT_ARGS | PRINT_LOCALS;
result = mi_apply_ext_lang_frame_filter (frame, flags,
print_value,
current_uiout, 0, 0);
}
/* Run the inbuilt backtrace if there are no filters registered, or
if "--no-frame-filters" has been specified from the command. */
if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS)
{
list_args_or_locals (all, print_value, frame,
skip_unavailable);
}
}
