/* Print and select stack frames for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
- 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1986-2005, 2007-2012 Free Software Foundation, Inc.
This file is part of GDB.
#include "cp-support.h"
#include "disasm.h"
#include "inline-frame.h"
+#include "linespec.h"
#include "gdb_assert.h"
#include <ctype.h>
void (*deprecated_selected_frame_level_changed_hook) (int);
-/* The possible choices of "set print frame-arguments, and the value
+/* The possible choices of "set print frame-arguments", and the value
of this setting. */
-static const char *print_frame_arguments_choices[] =
+static const char *const print_frame_arguments_choices[] =
{"all", "scalars", "none", NULL};
static const char *print_frame_arguments = "scalars";
+/* The possible choices of "set print entry-values", and the value
+ of this setting. */
+
+const char print_entry_values_no[] = "no";
+const char print_entry_values_only[] = "only";
+const char print_entry_values_preferred[] = "preferred";
+const char print_entry_values_if_needed[] = "if-needed";
+const char print_entry_values_both[] = "both";
+const char print_entry_values_compact[] = "compact";
+const char print_entry_values_default[] = "default";
+static const char *const print_entry_values_choices[] =
+{
+ print_entry_values_no,
+ print_entry_values_only,
+ print_entry_values_preferred,
+ print_entry_values_if_needed,
+ print_entry_values_both,
+ print_entry_values_compact,
+ print_entry_values_default,
+ NULL
+};
+const char *print_entry_values = print_entry_values_default;
+
/* Prototypes for local functions. */
static void print_frame_local_vars (struct frame_info *, int,
enum print_what print_what, int print_args,
struct symtab_and_line sal);
+static void set_last_displayed_sal (int valid,
+ struct program_space *pspace,
+ CORE_ADDR addr,
+ struct symtab *symtab,
+ int line);
+
/* Zero means do things normally; we are interacting directly with the
user. One means print the full filename and linenumber when a
frame is printed, and do so in a format emacs18/emacs19.22 can
cases and in a slightly different syntax. */
int annotation_level = 0;
+
+/* These variables hold the last symtab and line we displayed to the user.
+ * This is where we insert a breakpoint or a skiplist entry by default. */
+static int last_displayed_sal_valid = 0;
+static struct program_space *last_displayed_pspace = 0;
+static CORE_ADDR last_displayed_addr = 0;
+static struct symtab *last_displayed_symtab = 0;
+static int last_displayed_line = 0;
\f
/* Return 1 if we should display the address in addition to the location,
volatile struct gdb_exception e;
/* For mi, alway print location and address. */
- if (ui_out_is_mi_like_p (uiout))
+ if (ui_out_is_mi_like_p (current_uiout))
print_what = LOC_AND_ADDRESS;
TRY_CATCH (e, RETURN_MASK_ERROR)
}
}
+/* Print single argument of inferior function. ARG must be already
+ read in.
+
+ Errors are printed as if they would be the parameter value. Use zeroed ARG
+ iff it should not be printed accoring to user settings. */
+
+static void
+print_frame_arg (const struct frame_arg *arg)
+{
+ struct ui_out *uiout = current_uiout;
+ volatile struct gdb_exception except;
+ struct cleanup *old_chain;
+ struct ui_file *stb;
+
+ stb = mem_fileopen ();
+ old_chain = make_cleanup_ui_file_delete (stb);
+
+ gdb_assert (!arg->val || !arg->error);
+ gdb_assert (arg->entry_kind == print_entry_values_no
+ || arg->entry_kind == print_entry_values_only
+ || (!ui_out_is_mi_like_p (uiout)
+ && arg->entry_kind == print_entry_values_compact));
+
+ annotate_arg_begin ();
+
+ make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
+ fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym),
+ SYMBOL_LANGUAGE (arg->sym), DMGL_PARAMS | DMGL_ANSI);
+ if (arg->entry_kind == print_entry_values_compact)
+ {
+ /* It is OK to provide invalid MI-like stream as with
+ PRINT_ENTRY_VALUE_COMPACT we never use MI. */
+ fputs_filtered ("=", stb);
+
+ fprintf_symbol_filtered (stb, SYMBOL_PRINT_NAME (arg->sym),
+ SYMBOL_LANGUAGE (arg->sym),
+ DMGL_PARAMS | DMGL_ANSI);
+ }
+ if (arg->entry_kind == print_entry_values_only
+ || arg->entry_kind == print_entry_values_compact)
+ fputs_filtered ("@entry", stb);
+ ui_out_field_stream (uiout, "name", stb);
+ annotate_arg_name_end ();
+ ui_out_text (uiout, "=");
+
+ if (!arg->val && !arg->error)
+ ui_out_text (uiout, "...");
+ else
+ {
+ if (arg->error)
+ except.message = arg->error;
+ else
+ {
+ /* TRY_CATCH has two statements, wrap it in a block. */
+
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ const struct language_defn *language;
+ struct value_print_options opts;
+
+ /* Avoid value_print because it will deref ref parameters. We
+ just want to print their addresses. Print ??? for args whose
+ address we do not know. We pass 2 as "recurse" to val_print
+ because our standard indentation here is 4 spaces, and
+ val_print indents 2 for each recurse. */
+
+ annotate_arg_value (value_type (arg->val));
+
+ /* Use the appropriate language to display our symbol, unless the
+ user forced the language to a specific language. */
+ if (language_mode == language_mode_auto)
+ language = language_def (SYMBOL_LANGUAGE (arg->sym));
+ else
+ language = current_language;
+
+ get_raw_print_options (&opts);
+ opts.deref_ref = 1;
+
+ /* True in "summary" mode, false otherwise. */
+ opts.summary = !strcmp (print_frame_arguments, "scalars");
+
+ common_val_print (arg->val, stb, 2, &opts, language);
+ }
+ }
+ if (except.message)
+ fprintf_filtered (stb, _("<error reading variable: %s>"),
+ except.message);
+ }
+
+ ui_out_field_stream (uiout, "value", stb);
+
+ /* Also invoke ui_out_tuple_end. */
+ do_cleanups (old_chain);
+
+ annotate_arg_end ();
+}
+
+/* Read in inferior function parameter SYM at FRAME into ARGP. Caller is
+ responsible for xfree of ARGP->ERROR. This function never throws an
+ exception. */
+
+void
+read_frame_arg (struct symbol *sym, struct frame_info *frame,
+ struct frame_arg *argp, struct frame_arg *entryargp)
+{
+ struct value *val = NULL, *entryval = NULL;
+ char *val_error = NULL, *entryval_error = NULL;
+ int val_equal = 0;
+ volatile struct gdb_exception except;
+
+ if (print_entry_values != print_entry_values_only
+ && print_entry_values != print_entry_values_preferred)
+ {
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ val = read_var_value (sym, frame);
+ }
+ if (!val)
+ {
+ val_error = alloca (strlen (except.message) + 1);
+ strcpy (val_error, except.message);
+ }
+ }
+
+ if (SYMBOL_CLASS (sym) == LOC_COMPUTED
+ && print_entry_values != print_entry_values_no
+ && (print_entry_values != print_entry_values_if_needed
+ || !val || value_optimized_out (val)))
+ {
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ const struct symbol_computed_ops *ops;
+
+ ops = SYMBOL_COMPUTED_OPS (sym);
+ entryval = ops->read_variable_at_entry (sym, frame);
+ }
+ if (!entryval)
+ {
+ entryval_error = alloca (strlen (except.message) + 1);
+ strcpy (entryval_error, except.message);
+ }
+
+ if (except.error == NO_ENTRY_VALUE_ERROR
+ || (entryval && value_optimized_out (entryval)))
+ {
+ entryval = NULL;
+ entryval_error = NULL;
+ }
+
+ if (print_entry_values == print_entry_values_compact
+ || print_entry_values == print_entry_values_default)
+ {
+ /* For MI do not try to use print_entry_values_compact for ARGP. */
+
+ if (val && entryval && !ui_out_is_mi_like_p (current_uiout))
+ {
+ unsigned len = TYPE_LENGTH (value_type (val));
+
+ if (!value_optimized_out (val) && value_lazy (val))
+ value_fetch_lazy (val);
+ if (!value_optimized_out (val) && value_lazy (entryval))
+ value_fetch_lazy (entryval);
+ if (!value_optimized_out (val)
+ && value_available_contents_eq (val, 0, entryval, 0, len))
+ {
+ /* Initialize it just to avoid a GCC false warning. */
+ struct value *val_deref = NULL, *entryval_deref;
+
+ /* DW_AT_GNU_call_site_value does match with the current
+ value. If it is a reference still try to verify if
+ dereferenced DW_AT_GNU_call_site_data_value does not
+ differ. */
+
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ unsigned len_deref;
+
+ val_deref = coerce_ref (val);
+ if (value_lazy (val_deref))
+ value_fetch_lazy (val_deref);
+ len_deref = TYPE_LENGTH (value_type (val_deref));
+
+ entryval_deref = coerce_ref (entryval);
+ if (value_lazy (entryval_deref))
+ value_fetch_lazy (entryval_deref);
+
+ /* If the reference addresses match but dereferenced
+ content does not match print them. */
+ if (val != val_deref
+ && value_available_contents_eq (val_deref, 0,
+ entryval_deref, 0,
+ len_deref))
+ val_equal = 1;
+ }
+
+ /* Value was not a reference; and its content matches. */
+ if (val == val_deref)
+ val_equal = 1;
+ /* If the dereferenced content could not be fetched do not
+ display anything. */
+ else if (except.error == NO_ENTRY_VALUE_ERROR)
+ val_equal = 1;
+ else if (except.message)
+ {
+ entryval_error = alloca (strlen (except.message) + 1);
+ strcpy (entryval_error, except.message);
+ }
+
+ if (val_equal)
+ entryval = NULL;
+ }
+ }
+
+ /* Try to remove possibly duplicate error message for ENTRYARGP even
+ in MI mode. */
+
+ if (val_error && entryval_error
+ && strcmp (val_error, entryval_error) == 0)
+ {
+ entryval_error = NULL;
+
+ /* Do not se VAL_EQUAL as the same error message may be shown for
+ the entry value even if no entry values are present in the
+ inferior. */
+ }
+ }
+ }
+
+ if (entryval == NULL)
+ {
+ if (print_entry_values == print_entry_values_preferred)
+ {
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ val = read_var_value (sym, frame);
+ }
+ if (!val)
+ {
+ val_error = alloca (strlen (except.message) + 1);
+ strcpy (val_error, except.message);
+ }
+ }
+ if (print_entry_values == print_entry_values_only
+ || print_entry_values == print_entry_values_both
+ || (print_entry_values == print_entry_values_preferred
+ && (!val || value_optimized_out (val))))
+ entryval = allocate_optimized_out_value (SYMBOL_TYPE (sym));
+ }
+ if ((print_entry_values == print_entry_values_compact
+ || print_entry_values == print_entry_values_if_needed
+ || print_entry_values == print_entry_values_preferred)
+ && (!val || value_optimized_out (val)) && entryval != NULL)
+ {
+ val = NULL;
+ val_error = NULL;
+ }
+
+ argp->sym = sym;
+ argp->val = val;
+ argp->error = val_error ? xstrdup (val_error) : NULL;
+ if (!val && !val_error)
+ argp->entry_kind = print_entry_values_only;
+ else if ((print_entry_values == print_entry_values_compact
+ || print_entry_values == print_entry_values_default) && val_equal)
+ {
+ argp->entry_kind = print_entry_values_compact;
+ gdb_assert (!ui_out_is_mi_like_p (current_uiout));
+ }
+ else
+ argp->entry_kind = print_entry_values_no;
+
+ entryargp->sym = sym;
+ entryargp->val = entryval;
+ entryargp->error = entryval_error ? xstrdup (entryval_error) : NULL;
+ if (!entryval && !entryval_error)
+ entryargp->entry_kind = print_entry_values_no;
+ else
+ entryargp->entry_kind = print_entry_values_only;
+}
+
/* Print the arguments of frame FRAME on STREAM, given the function
FUNC running in that frame (as a symbol), where NUM is the number
of arguments according to the stack frame (or -1 if the number of
print_frame_args (struct symbol *func, struct frame_info *frame,
int num, struct ui_file *stream)
{
+ struct ui_out *uiout = current_uiout;
int first = 1;
/* Offset of next stack argument beyond the one we have seen that is
at the highest offset, or -1 if we haven't come to a stack
long highest_offset = -1;
/* Number of ints of arguments that we have printed so far. */
int args_printed = 0;
- struct cleanup *old_chain, *list_chain;
- struct ui_stream *stb;
+ struct cleanup *old_chain;
+ struct ui_file *stb;
/* True if we should print arguments, false otherwise. */
int print_args = strcmp (print_frame_arguments, "none");
/* True in "summary" mode, false otherwise. */
int summary = !strcmp (print_frame_arguments, "scalars");
- stb = ui_out_stream_new (uiout);
- old_chain = make_cleanup_ui_out_stream_delete (stb);
+ stb = mem_fileopen ();
+ old_chain = make_cleanup_ui_file_delete (stb);
if (func)
{
struct block *b = SYMBOL_BLOCK_VALUE (func);
- struct dict_iterator iter;
+ struct block_iterator iter;
struct symbol *sym;
- struct value *val;
ALL_BLOCK_SYMBOLS (b, iter, sym)
{
+ struct frame_arg arg, entryarg;
+
QUIT;
/* Keep track of the highest stack argument offset seen, and
ui_out_text (uiout, ", ");
ui_out_wrap_hint (uiout, " ");
- annotate_arg_begin ();
-
- list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
- fprintf_symbol_filtered (stb->stream, SYMBOL_PRINT_NAME (sym),
- SYMBOL_LANGUAGE (sym),
- DMGL_PARAMS | DMGL_ANSI);
- ui_out_field_stream (uiout, "name", stb);
- annotate_arg_name_end ();
- ui_out_text (uiout, "=");
-
- if (print_args)
- {
- /* Avoid value_print because it will deref ref parameters.
- We just want to print their addresses. Print ??? for
- args whose address we do not know. We pass 2 as
- "recurse" to val_print because our standard indentation
- here is 4 spaces, and val_print indents 2 for each
- recurse. */
- val = read_var_value (sym, frame);
+ if (!print_args)
+ {
+ memset (&arg, 0, sizeof (arg));
+ arg.sym = sym;
+ arg.entry_kind = print_entry_values_no;
+ memset (&entryarg, 0, sizeof (entryarg));
+ entryarg.sym = sym;
+ entryarg.entry_kind = print_entry_values_no;
+ }
+ else
+ read_frame_arg (sym, frame, &arg, &entryarg);
- annotate_arg_value (val == NULL ? NULL : value_type (val));
-
- if (val)
- {
- const struct language_defn *language;
- struct value_print_options opts;
-
- /* Use the appropriate language to display our symbol,
- unless the user forced the language to a specific
- language. */
- if (language_mode == language_mode_auto)
- language = language_def (SYMBOL_LANGUAGE (sym));
- else
- language = current_language;
-
- get_raw_print_options (&opts);
- opts.deref_ref = 0;
- opts.summary = summary;
- common_val_print (val, stb->stream, 2, &opts, language);
- ui_out_field_stream (uiout, "value", stb);
- }
- else
- ui_out_text (uiout, "???");
- }
- else
- ui_out_text (uiout, "...");
+ if (arg.entry_kind != print_entry_values_only)
+ print_frame_arg (&arg);
+ if (entryarg.entry_kind != print_entry_values_no)
+ {
+ if (arg.entry_kind != print_entry_values_only)
+ {
+ ui_out_text (uiout, ", ");
+ ui_out_wrap_hint (uiout, " ");
+ }
- /* Invoke ui_out_tuple_end. */
- do_cleanups (list_chain);
+ print_frame_arg (&entryarg);
+ }
- annotate_arg_end ();
+ xfree (arg.error);
+ xfree (entryarg.error);
first = 0;
}
{
volatile struct gdb_exception exception;
- TRY_CATCH (exception, RETURN_MASK_ALL)
+ TRY_CATCH (exception, RETURN_MASK_ERROR)
+ {
+ gdb_disassembly (gdbarch, current_uiout, 0,
+ DISASSEMBLY_RAW_INSN, how_many,
+ low, high);
+ }
+ if (exception.reason < 0)
{
- gdb_disassembly (gdbarch, uiout, 0, DISASSEMBLY_RAW_INSN, how_many, low,
- high);
+ /* If an exception was thrown while doing the disassembly, print
+ the error message, to give the user a clue of what happened. */
+ exception_print (gdb_stderr, exception);
}
- /* If an exception was thrown while doing the disassembly, print
- the error message, to give the user a clue of what happened. */
- if (exception.reason == RETURN_ERROR)
- exception_print (gdb_stderr, exception);
}
/* Print information about frame FRAME. The output is format according
struct symtab_and_line sal;
int source_print;
int location_print;
+ struct ui_out *uiout = current_uiout;
if (get_frame_type (frame) == DUMMY_FRAME
|| get_frame_type (frame) == SIGTRAMP_FRAME
CORE_ADDR pc;
if (get_frame_pc_if_available (frame, &pc))
- set_default_breakpoint (1, sal.pspace, pc, sal.symtab, sal.line);
+ set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line);
else
- set_default_breakpoint (0, 0, 0, 0, 0);
+ set_last_displayed_sal (0, 0, 0, 0, 0);
}
annotate_frame_end ();
gdb_flush (gdb_stdout);
}
+/* Remember the last symtab and line we displayed, which we use e.g.
+ * as the place to put a breakpoint when the `break' command is
+ * invoked with no arguments. */
+
+static void
+set_last_displayed_sal (int valid, struct program_space *pspace,
+ CORE_ADDR addr, struct symtab *symtab,
+ int line)
+{
+ last_displayed_sal_valid = valid;
+ last_displayed_pspace = pspace;
+ last_displayed_addr = addr;
+ last_displayed_symtab = symtab;
+ last_displayed_line = line;
+ if (valid && pspace == NULL)
+ {
+ clear_last_displayed_sal ();
+ internal_error (__FILE__, __LINE__,
+ _("Trying to set NULL pspace."));
+ }
+}
+
+/* Forget the last sal we displayed. */
+
+void
+clear_last_displayed_sal (void)
+{
+ last_displayed_sal_valid = 0;
+ last_displayed_pspace = 0;
+ last_displayed_addr = 0;
+ last_displayed_symtab = 0;
+ last_displayed_line = 0;
+}
+
+/* Is our record of the last sal we displayed valid? If not,
+ * the get_last_displayed_* functions will return NULL or 0, as
+ * appropriate. */
+
+int
+last_displayed_sal_is_valid (void)
+{
+ return last_displayed_sal_valid;
+}
+
+/* Get the pspace of the last sal we displayed, if it's valid. */
+
+struct program_space *
+get_last_displayed_pspace (void)
+{
+ if (last_displayed_sal_valid)
+ return last_displayed_pspace;
+ return 0;
+}
+
+/* Get the address of the last sal we displayed, if it's valid. */
+
+CORE_ADDR
+get_last_displayed_addr (void)
+{
+ if (last_displayed_sal_valid)
+ return last_displayed_addr;
+ return 0;
+}
+
+/* Get the symtab of the last sal we displayed, if it's valid. */
+
+struct symtab*
+get_last_displayed_symtab (void)
+{
+ if (last_displayed_sal_valid)
+ return last_displayed_symtab;
+ return 0;
+}
+
+/* Get the line of the last sal we displayed, if it's valid. */
+
+int
+get_last_displayed_line (void)
+{
+ if (last_displayed_sal_valid)
+ return last_displayed_line;
+ return 0;
+}
+
+/* Get the last sal we displayed, if it's valid. */
+
+void
+get_last_displayed_sal (struct symtab_and_line *sal)
+{
+ if (last_displayed_sal_valid)
+ {
+ sal->pspace = last_displayed_pspace;
+ sal->pc = last_displayed_addr;
+ sal->symtab = last_displayed_symtab;
+ sal->line = last_displayed_line;
+ }
+ else
+ {
+ sal->pspace = 0;
+ sal->pc = 0;
+ sal->symtab = 0;
+ sal->line = 0;
+ }
+}
+
+
/* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function
corresponding to FRAME. */
void
-find_frame_funname (struct frame_info *frame, char **funname,
+find_frame_funname (struct frame_info *frame, const char **funname,
enum language *funlang, struct symbol **funcp)
{
struct symbol *func;
struct symtab_and_line sal)
{
struct gdbarch *gdbarch = get_frame_arch (frame);
- char *funname = NULL;
+ struct ui_out *uiout = current_uiout;
+ const char *funname = NULL;
enum language funlang = language_unknown;
- struct ui_stream *stb;
+ struct ui_file *stb;
struct cleanup *old_chain, *list_chain;
struct value_print_options opts;
struct symbol *func;
pc_p = get_frame_pc_if_available (frame, &pc);
- stb = ui_out_stream_new (uiout);
- old_chain = make_cleanup_ui_out_stream_delete (stb);
+ stb = mem_fileopen ();
+ old_chain = make_cleanup_ui_file_delete (stb);
find_frame_funname (frame, &funname, &funlang, &func);
ui_out_text (uiout, " in ");
}
annotate_frame_function_name ();
- fprintf_symbol_filtered (stb->stream, funname ? funname : "??",
+ fprintf_symbol_filtered (stb, funname ? funname : "??",
funlang, DMGL_ANSI);
ui_out_field_stream (uiout, "func", stb);
ui_out_wrap_hint (uiout, " ");
struct symtab *s;
struct frame_info *calling_frame_info;
int numregs;
- char *funname = 0;
+ const char *funname = 0;
enum language funlang = language_unknown;
const char *pc_regname;
int selected_frame_p;
printf_filtered (_(" Outermost frame: %s\n"),
frame_stop_reason_string (reason));
}
+ else if (get_frame_type (fi) == TAILCALL_FRAME)
+ puts_filtered (" tail call frame");
else if (get_frame_type (fi) == INLINE_FRAME)
printf_filtered (" inlined into frame %d",
frame_relative_level (get_prev_frame (fi)));
the frame->prev field gets set to NULL in that case). */
print_frame_info (fi, 1, LOCATION, 1);
if (show_locals)
- print_frame_local_vars (fi, 1, gdb_stdout);
+ {
+ struct frame_id frame_id = get_frame_id (fi);
+
+ print_frame_local_vars (fi, 1, gdb_stdout);
+
+ /* print_frame_local_vars invalidates FI. */
+ fi = frame_find_by_id (frame_id);
+ if (fi == NULL)
+ {
+ trailing = NULL;
+ warning (_("Unable to restore previously selected frame."));
+ break;
+ }
+ }
/* Save the last frame to check for error conditions. */
trailing = fi;
enum unwind_stop_reason reason;
reason = get_frame_unwind_stop_reason (trailing);
- if (reason > UNWIND_FIRST_ERROR)
+ if (reason >= UNWIND_FIRST_ERROR)
printf_filtered (_("Backtrace stopped: %s\n"),
frame_stop_reason_string (reason));
}
{
struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
int fulltrace_arg = -1, arglen = 0, argc = 0;
- volatile struct gdb_exception e;
if (arg)
{
if (arglen > 0)
{
arg = xmalloc (arglen + 1);
- memset (arg, 0, arglen + 1);
+ make_cleanup (xfree, arg);
+ arg[0] = 0;
for (i = 0; i < (argc + 1); i++)
{
if (i != fulltrace_arg)
}
}
- TRY_CATCH (e, RETURN_MASK_ERROR)
- {
- backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, from_tty);
- }
-
- if (fulltrace_arg >= 0 && arglen > 0)
- xfree (arg);
+ backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */, from_tty);
do_cleanups (old_chain);
}
static void
backtrace_full_command (char *arg, int from_tty)
{
- volatile struct gdb_exception e;
-
- TRY_CATCH (e, RETURN_MASK_ERROR)
- {
- backtrace_command_1 (arg, 1 /* show_locals */, from_tty);
- }
+ backtrace_command_1 (arg, 1 /* show_locals */, from_tty);
}
\f
iterate_over_block_arg_local_vars_cb cb,
void *cb_data)
{
- struct dict_iterator iter;
+ struct block_iterator iter;
struct symbol *sym;
ALL_BLOCK_SYMBOLS (b, iter, sym)
print_block_frame_labels (struct gdbarch *gdbarch, struct block *b,
int *have_default, struct ui_file *stream)
{
- struct dict_iterator iter;
+ struct block_iterator iter;
struct symbol *sym;
int values_printed = 0;
struct print_variable_and_value_data
{
- struct frame_info *frame;
+ struct frame_id frame_id;
int num_tabs;
struct ui_file *stream;
int values_printed;
void *cb_data)
{
struct print_variable_and_value_data *p = cb_data;
+ struct frame_info *frame;
+
+ frame = frame_find_by_id (p->frame_id);
+ if (frame == NULL)
+ {
+ warning (_("Unable to restore previously selected frame."));
+ return;
+ }
+
+ print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs);
+
+ /* print_variable_and_value invalidates FRAME. */
+ frame = NULL;
- print_variable_and_value (print_name, sym,
- p->frame, p->stream, p->num_tabs);
p->values_printed = 1;
}
+/* Print all variables from the innermost up to the function block of FRAME.
+ Print them with values to STREAM indented by NUM_TABS.
+
+ This function will invalidate FRAME. */
+
static void
print_frame_local_vars (struct frame_info *frame, int num_tabs,
struct ui_file *stream)
return;
}
- cb_data.frame = frame;
+ cb_data.frame_id = get_frame_id (frame);
cb_data.num_tabs = 4 * num_tabs;
cb_data.stream = stream;
cb_data.values_printed = 0;
do_print_variable_and_value,
&cb_data);
+ /* do_print_variable_and_value invalidates FRAME. */
+ frame = NULL;
+
if (!cb_data.values_printed)
fprintf_filtered (stream, _("No locals.\n"));
}
-/* Same, but print labels. */
-
-static void
-print_frame_label_vars (struct frame_info *frame, int this_level_only,
- struct ui_file *stream)
-{
-#if 1
- fprintf_filtered (stream, "print_frame_label_vars disabled.\n");
-#else
- struct blockvector *bl;
- struct block *block = get_frame_block (frame, 0);
- struct gdbarch *gdbarch = get_frame_arch (frame);
- int values_printed = 0;
- int index, have_default = 0;
- char *blocks_printed;
- CORE_ADDR pc = get_frame_pc (frame);
-
- if (block == 0)
- {
- fprintf_filtered (stream, "No symbol table info available.\n");
- return;
- }
-
- bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
- blocks_printed = alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
-
- while (block != 0)
- {
- CORE_ADDR end = BLOCK_END (block) - 4;
- int last_index;
-
- if (bl != blockvector_for_pc (end, &index))
- error (_("blockvector blotch"));
- if (BLOCKVECTOR_BLOCK (bl, index) != block)
- error (_("blockvector botch"));
- last_index = BLOCKVECTOR_NBLOCKS (bl);
- index += 1;
-
- /* Don't print out blocks that have gone by. */
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
- index++;
-
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
- {
- if (blocks_printed[index] == 0)
- {
- if (print_block_frame_labels (gdbarch,
- BLOCKVECTOR_BLOCK (bl, index),
- &have_default, stream))
- values_printed = 1;
- blocks_printed[index] = 1;
- }
- index++;
- }
- if (have_default)
- return;
- if (values_printed && this_level_only)
- return;
-
- /* After handling the function's top-level block, stop. Don't
- continue to its superblock, the block of per-file symbols.
- Also do not continue to the containing function of an inlined
- function. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
- }
-
- if (!values_printed && !this_level_only)
- fprintf_filtered (stream, _("No catches.\n"));
-#endif
-}
-
void
locals_info (char *args, int from_tty)
{
0, gdb_stdout);
}
-static void
-catch_info (char *ignore, int from_tty)
-{
- /* Assume g++ compiled code; old GDB 4.16 behaviour. */
- print_frame_label_vars (get_selected_frame (_("No frame selected.")),
- 0, gdb_stdout);
-}
-
/* Iterate over all the argument variables in block B.
Returns 1 if any argument was walked; 0 otherwise. */
iterate_over_block_arg_local_vars_cb cb,
void *cb_data)
{
- struct dict_iterator iter;
+ struct block_iterator iter;
struct symbol *sym, *sym2;
ALL_BLOCK_SYMBOLS (b, iter, sym)
}
}
+/* Print all argument variables of the function of FRAME.
+ Print them with values to STREAM.
+
+ This function will invalidate FRAME. */
+
static void
print_frame_arg_vars (struct frame_info *frame, struct ui_file *stream)
{
return;
}
- cb_data.frame = frame;
+ cb_data.frame_id = get_frame_id (frame);
cb_data.num_tabs = 0;
cb_data.stream = gdb_stdout;
cb_data.values_printed = 0;
iterate_over_block_arg_vars (SYMBOL_BLOCK_VALUE (func),
do_print_variable_and_value, &cb_data);
+ /* do_print_variable_and_value invalidates FRAME. */
+ frame = NULL;
+
if (!cb_data.values_printed)
fprintf_filtered (stream, _("No arguments.\n"));
}
struct gdbarch *gdbarch;
struct symbol *thisfun;
struct value *return_value = NULL;
+ struct value *function = NULL;
const char *query_prefix = "";
thisframe = get_selected_frame ("No selected frame.");
return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun));
if (return_type == NULL)
{
- if (retval_expr->elts[0].opcode != UNOP_CAST)
+ if (retval_expr->elts[0].opcode != UNOP_CAST
+ && retval_expr->elts[0].opcode != UNOP_CAST_TYPE)
error (_("Return value type not available for selected "
"stack frame.\n"
"Please use an explicit cast of the value to return."));
if (value_lazy (return_value))
value_fetch_lazy (return_value);
+ if (thisfun != NULL)
+ function = read_var_value (thisfun, thisframe);
+
if (TYPE_CODE (return_type) == TYPE_CODE_VOID)
/* If the return-type is "void", don't try to find the
return-value's location. However, do still evaluate the
occur. */
return_value = NULL;
else if (thisfun != NULL
- && using_struct_return (gdbarch,
- SYMBOL_TYPE (thisfun), return_type))
+ && using_struct_return (gdbarch, function, return_type))
{
query_prefix = "The location at which to store the "
"function's return value is unknown.\n"
{
struct type *return_type = value_type (return_value);
struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ());
- struct type *func_type = thisfun == NULL ? NULL : SYMBOL_TYPE (thisfun);
- gdb_assert (gdbarch_return_value (gdbarch, func_type, return_type, NULL,
+ gdb_assert (gdbarch_return_value (gdbarch, function, return_type, NULL,
NULL, NULL)
== RETURN_VALUE_REGISTER_CONVENTION);
- gdbarch_return_value (gdbarch, func_type, return_type,
+ gdbarch_return_value (gdbarch, function, return_type,
get_current_regcache (), NULL /*read*/,
value_contents (return_value) /*write*/);
}
int i;
int level = 1;
struct function_bounds *func_bounds = NULL;
+ struct cleanup *cleanups;
if (arg != NULL)
return;
frame = parse_frame_specification ("0");
- sals = decode_line_spec (arg, 1);
+ sals = decode_line_with_current_source (arg, DECODE_LINE_FUNFIRSTLINE);
+ cleanups = make_cleanup (xfree, sals.sals);
func_bounds = (struct function_bounds *) xmalloc (
sizeof (struct function_bounds) * sals.nelts);
+ make_cleanup (xfree, func_bounds);
for (i = 0; (i < sals.nelts && !found); i++)
{
- if (sals.sals[i].pc == 0
- || find_pc_partial_function (sals.sals[i].pc, NULL,
- &func_bounds[i].low,
- &func_bounds[i].high) == 0)
+ if (sals.sals[i].pspace != current_program_space)
+ func_bounds[i].low = func_bounds[i].high = 0;
+ else if (sals.sals[i].pc == 0
+ || find_pc_partial_function (sals.sals[i].pc, NULL,
+ &func_bounds[i].low,
+ &func_bounds[i].high) == 0)
{
func_bounds[i].low = func_bounds[i].high = 0;
}
}
while (!found && level == 0);
- if (func_bounds)
- xfree (func_bounds);
+ do_cleanups (cleanups);
if (!found)
printf_filtered (_("'%s' not within current stack frame.\n"), arg);
Select the stack frame that contains <func>.\n\
Usage: func <name>\n"));
- add_info ("catch", catch_info,
- _("Exceptions that can be caught in the current stack frame."));
-
add_setshow_enum_cmd ("frame-arguments", class_stack,
print_frame_arguments_choices, &print_frame_arguments,
_("Set printing of non-scalar frame arguments"),
show_disassemble_next_line,
&setlist, &showlist);
disassemble_next_line = AUTO_BOOLEAN_FALSE;
+
+ add_setshow_enum_cmd ("entry-values", class_stack,
+ print_entry_values_choices, &print_entry_values,
+ _("Set printing of function arguments at function "
+ "entry"),
+ _("Show printing of function arguments at function "
+ "entry"),
+ _("\
+GDB can sometimes determine the values of function arguments at entry,\n\
+in addition to their current values. This option tells GDB whether\n\
+to print the current value, the value at entry (marked as val@entry),\n\
+or both. Note that one or both of these values may be <optimized out>."),
+ NULL, NULL, &setprintlist, &showprintlist);
}
projects / deliverable / binutils-gdb.git / blobdiff