/* Print and select stack frames for GDB, the GNU debugger.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
- 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software
- Foundation, Inc.
+ Copyright (C) 1986-2013 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
+ 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,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#include <ctype.h>
#include "defs.h"
-#include "gdb_string.h"
#include "value.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "ui-out.h"
#include "block.h"
#include "stack.h"
+#include "dictionary.h"
+#include "exceptions.h"
+#include "reggroups.h"
+#include "regcache.h"
+#include "solib.h"
+#include "valprint.h"
+#include "gdbthread.h"
+#include "cp-support.h"
+#include "disasm.h"
+#include "inline-frame.h"
+#include "linespec.h"
+#include "cli/cli-utils.h"
+
+#include "gdb_assert.h"
+#include <ctype.h>
+#include "gdb_string.h"
-/* Prototypes for exported functions. */
+#include "psymtab.h"
+#include "symfile.h"
+#include "python/python.h"
-void args_info (char *, int);
+void (*deprecated_selected_frame_level_changed_hook) (int);
-void locals_info (char *, int);
+/* The possible choices of "set print frame-arguments", and the value
+ of this setting. */
-void (*selected_frame_level_changed_hook) (int);
+static const char *const print_frame_arguments_choices[] =
+ {"all", "scalars", "none", NULL};
+static const char *print_frame_arguments = "scalars";
-void _initialize_stack (void);
+/* The possible choices of "set print entry-values", and the value
+ of this setting. */
-void return_command (char *, int);
+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. */
+/* Prototypes for local functions. */
-static void down_command (char *, int);
+static void print_frame_local_vars (struct frame_info *, int,
+ struct ui_file *);
-static void down_silently_base (char *);
+static void print_frame (struct frame_info *frame, int print_level,
+ enum print_what print_what, int print_args,
+ struct symtab_and_line sal);
-static void down_silently_command (char *, int);
+static void set_last_displayed_sal (int valid,
+ struct program_space *pspace,
+ CORE_ADDR addr,
+ struct symtab *symtab,
+ int line);
-static void up_command (char *, int);
+/* 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
+ parse. Two means print similar annotations, but in many more
+ cases and in a slightly different syntax. */
-static void up_silently_base (char *);
+int annotation_level = 0;
-static void up_silently_command (char *, int);
+/* 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
-void frame_command (char *, int);
+/* Return 1 if we should display the address in addition to the location,
+ because we are in the middle of a statement. */
-static void current_frame_command (char *, int);
+static int
+frame_show_address (struct frame_info *frame,
+ struct symtab_and_line sal)
+{
+ /* If there is a line number, but no PC, then there is no location
+ information associated with this sal. The only way that should
+ happen is for the call sites of inlined functions (SAL comes from
+ find_frame_sal). Otherwise, we would have some PC range if the
+ SAL came from a line table. */
+ if (sal.line != 0 && sal.pc == 0 && sal.end == 0)
+ {
+ if (get_next_frame (frame) == NULL)
+ gdb_assert (inline_skipped_frames (inferior_ptid) > 0);
+ else
+ gdb_assert (get_frame_type (get_next_frame (frame)) == INLINE_FRAME);
+ return 0;
+ }
-static void print_frame_arg_vars (struct frame_info *, struct ui_file *);
+ return get_frame_pc (frame) != sal.pc;
+}
-static void catch_info (char *, int);
+/* Show or print a stack frame FRAME briefly. The output is format
+ according to PRINT_LEVEL and PRINT_WHAT printing the frame's
+ relative level, function name, argument list, and file name and
+ line number. If the frame's PC is not at the beginning of the
+ source line, the actual PC is printed at the beginning. */
-static void args_plus_locals_info (char *, int);
+void
+print_stack_frame (struct frame_info *frame, int print_level,
+ enum print_what print_what)
+{
+ volatile struct gdb_exception e;
-static void print_frame_label_vars (struct frame_info *, int,
- struct ui_file *);
+ /* For mi, alway print location and address. */
+ if (ui_out_is_mi_like_p (current_uiout))
+ print_what = LOC_AND_ADDRESS;
-static void print_frame_local_vars (struct frame_info *, int,
- struct ui_file *);
+ TRY_CATCH (e, RETURN_MASK_ERROR)
+ {
+ int center = (print_what == SRC_LINE || print_what == SRC_AND_LOC);
-static int print_block_frame_labels (struct block *, int *,
- struct ui_file *);
+ print_frame_info (frame, print_level, print_what, 1 /* print_args */);
+ set_current_sal_from_frame (frame, center);
+ }
+}
-static int print_block_frame_locals (struct block *,
- struct frame_info *,
- int,
- struct ui_file *);
+/* Print nameless arguments of frame FRAME on STREAM, where START is
+ the offset of the first nameless argument, and NUM is the number of
+ nameless arguments to print. FIRST is nonzero if this is the first
+ argument (not just the first nameless argument). */
-static void print_frame (struct frame_info *fi,
- int level,
- int source,
- int args,
- struct symtab_and_line sal);
+static void
+print_frame_nameless_args (struct frame_info *frame, long start, int num,
+ int first, struct ui_file *stream)
+{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int i;
+ CORE_ADDR argsaddr;
+ long arg_value;
-static void backtrace_command (char *, int);
+ for (i = 0; i < num; i++)
+ {
+ QUIT;
+ argsaddr = get_frame_args_address (frame);
+ if (!argsaddr)
+ return;
+ arg_value = read_memory_integer (argsaddr + start,
+ sizeof (int), byte_order);
+ if (!first)
+ fprintf_filtered (stream, ", ");
+ fprintf_filtered (stream, "%ld", arg_value);
+ first = 0;
+ start += sizeof (int);
+ }
+}
-struct frame_info *parse_frame_specification (char *);
+/* Print single argument of inferior function. ARG must be already
+ read in.
-static void frame_info (char *, int);
+ Errors are printed as if they would be the parameter value. Use zeroed ARG
+ iff it should not be printed accoring to user settings. */
-extern int addressprint; /* Print addresses, or stay symbolic only? */
+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;
-/* 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
- parse. Two means print similar annotations, but in many more
- cases and in a slightly different syntax. */
+ stb = mem_fileopen ();
+ old_chain = make_cleanup_ui_file_delete (stb);
-int annotation_level = 0;
-\f
+ 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));
-struct print_stack_frame_args
- {
- struct frame_info *fi;
- int level;
- int source;
- int args;
- };
-
-/* Show or print the frame arguments.
- Pass the args the way catch_errors wants them. */
-static int print_stack_frame_stub (void *args);
-static int
-print_stack_frame_stub (void *args)
+ 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_no_prettyformat_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 print_stack_frame_args *p = (struct print_stack_frame_args *) args;
+ struct value *val = NULL, *entryval = NULL;
+ char *val_error = NULL, *entryval_error = NULL;
+ int val_equal = 0;
+ volatile struct gdb_exception except;
- print_frame_info (p->fi, p->level, p->source, p->args);
- return 0;
+ 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_COMPUTED_OPS (sym) != NULL
+ && SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry != NULL
+ && 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))
+ {
+ struct type *type = value_type (val);
+
+ if (!value_optimized_out (val)
+ && value_available_contents_eq (val, 0, entryval, 0,
+ TYPE_LENGTH (type)))
+ {
+ /* 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)
+ {
+ struct type *type_deref;
+
+ val_deref = coerce_ref (val);
+ if (value_lazy (val_deref))
+ value_fetch_lazy (val_deref);
+ type_deref = 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,
+ TYPE_LENGTH (type_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;
}
-/* Show or print a stack frame briefly. FRAME_INFI should be the frame info
- and LEVEL should be its level in the stack (or -1 for level not defined).
- This prints the level, the function executing, the arguments,
- and the file name and line number.
- If the pc is not at the beginning of the source line,
- the actual pc is printed at the beginning.
+/* 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
+ arguments is unknown). */
- If SOURCE is 1, print the source line as well.
- If SOURCE is -1, print ONLY the source line. */
+/* Note that currently the "number of arguments according to the
+ stack frame" is only known on VAX where i refers to the "number of
+ ints of arguments according to the stack frame". */
-void
-print_stack_frame (struct frame_info *fi, int level, int source)
+static void
+print_frame_args (struct symbol *func, struct frame_info *frame,
+ int num, struct ui_file *stream)
{
- struct print_stack_frame_args args;
+ 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
+ argument yet. */
+ long highest_offset = -1;
+ /* Number of ints of arguments that we have printed so far. */
+ int args_printed = 0;
+ struct cleanup *old_chain;
+ struct ui_file *stb;
+ /* True if we should print arguments, false otherwise. */
+ int print_args = strcmp (print_frame_arguments, "none");
+
+ stb = mem_fileopen ();
+ old_chain = make_cleanup_ui_file_delete (stb);
+
+ if (func)
+ {
+ struct block *b = SYMBOL_BLOCK_VALUE (func);
+ struct block_iterator iter;
+ struct symbol *sym;
+
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
+ {
+ struct frame_arg arg, entryarg;
+
+ QUIT;
+
+ /* Keep track of the highest stack argument offset seen, and
+ skip over any kinds of symbols we don't care about. */
+
+ if (!SYMBOL_IS_ARGUMENT (sym))
+ continue;
+
+ switch (SYMBOL_CLASS (sym))
+ {
+ case LOC_ARG:
+ case LOC_REF_ARG:
+ {
+ long current_offset = SYMBOL_VALUE (sym);
+ int arg_size = TYPE_LENGTH (SYMBOL_TYPE (sym));
+
+ /* Compute address of next argument by adding the size of
+ this argument and rounding to an int boundary. */
+ current_offset =
+ ((current_offset + arg_size + sizeof (int) - 1)
+ & ~(sizeof (int) - 1));
+
+ /* If this is the highest offset seen yet, set
+ highest_offset. */
+ if (highest_offset == -1
+ || (current_offset > highest_offset))
+ highest_offset = current_offset;
+
+ /* Add the number of ints we're about to print to
+ args_printed. */
+ args_printed += (arg_size + sizeof (int) - 1) / sizeof (int);
+ }
+
+ /* We care about types of symbols, but don't need to
+ keep track of stack offsets in them. */
+ case LOC_REGISTER:
+ case LOC_REGPARM_ADDR:
+ case LOC_COMPUTED:
+ case LOC_OPTIMIZED_OUT:
+ default:
+ break;
+ }
+
+ /* We have to look up the symbol because arguments can have
+ two entries (one a parameter, one a local) and the one we
+ want is the local, which lookup_symbol will find for us.
+ This includes gcc1 (not gcc2) on SPARC when passing a
+ small structure and gcc2 when the argument type is float
+ and it is passed as a double and converted to float by
+ the prologue (in the latter case the type of the LOC_ARG
+ symbol is double and the type of the LOC_LOCAL symbol is
+ float). */
+ /* But if the parameter name is null, don't try it. Null
+ parameter names occur on the RS/6000, for traceback
+ tables. FIXME, should we even print them? */
+
+ if (*SYMBOL_LINKAGE_NAME (sym))
+ {
+ struct symbol *nsym;
+
+ nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
+ b, VAR_DOMAIN, NULL);
+ gdb_assert (nsym != NULL);
+ if (SYMBOL_CLASS (nsym) == LOC_REGISTER
+ && !SYMBOL_IS_ARGUMENT (nsym))
+ {
+ /* There is a LOC_ARG/LOC_REGISTER pair. This means
+ that it was passed on the stack and loaded into a
+ register, or passed in a register and stored in a
+ stack slot. GDB 3.x used the LOC_ARG; GDB
+ 4.0-4.11 used the LOC_REGISTER.
+
+ Reasons for using the LOC_ARG:
+
+ (1) Because find_saved_registers may be slow for
+ remote debugging.
+
+ (2) Because registers are often re-used and stack
+ slots rarely (never?) are. Therefore using
+ the stack slot is much less likely to print
+ garbage.
+
+ Reasons why we might want to use the LOC_REGISTER:
+
+ (1) So that the backtrace prints the same value
+ as "print foo". I see no compelling reason
+ why this needs to be the case; having the
+ backtrace print the value which was passed
+ in, and "print foo" print the value as
+ modified within the called function, makes
+ perfect sense to me.
+
+ Additional note: It might be nice if "info args"
+ displayed both values.
+
+ One more note: There is a case with SPARC
+ structure passing where we need to use the
+ LOC_REGISTER, but this is dealt with by creating
+ a single LOC_REGPARM in symbol reading. */
+
+ /* Leave sym (the LOC_ARG) alone. */
+ ;
+ }
+ else
+ sym = nsym;
+ }
+
+ /* Print the current arg. */
+ if (!first)
+ ui_out_text (uiout, ", ");
+ ui_out_wrap_hint (uiout, " ");
+
+ 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);
- args.fi = fi;
- args.level = level;
- args.source = source;
- args.args = 1;
+ if (arg.entry_kind != print_entry_values_only)
+ print_frame_arg (&arg);
- catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL);
-}
+ 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, " ");
+ }
+
+ print_frame_arg (&entryarg);
+ }
+
+ xfree (arg.error);
+ xfree (entryarg.error);
+
+ first = 0;
+ }
+ }
+
+ /* Don't print nameless args in situations where we don't know
+ enough about the stack to find them. */
+ if (num != -1)
+ {
+ long start;
-struct print_args_args
+ if (highest_offset == -1)
+ start = gdbarch_frame_args_skip (get_frame_arch (frame));
+ else
+ start = highest_offset;
+
+ print_frame_nameless_args (frame, start, num - args_printed,
+ first, stream);
+ }
+
+ do_cleanups (old_chain);
+}
+
+/* Set the current source and line to the location given by frame
+ FRAME, if possible. When CENTER is true, adjust so the relevant
+ line is in the center of the next 'list'. */
+
+void
+set_current_sal_from_frame (struct frame_info *frame, int center)
{
- struct symbol *func;
- struct frame_info *fi;
- struct ui_file *stream;
-};
+ struct symtab_and_line sal;
-static int print_args_stub (void *);
+ find_frame_sal (frame, &sal);
+ if (sal.symtab)
+ {
+ if (center)
+ sal.line = max (sal.line - get_lines_to_list () / 2, 1);
+ set_current_source_symtab_and_line (&sal);
+ }
+}
-/* Pass the args the way catch_errors wants them. */
+/* If ON, GDB will display disassembly of the next source line when
+ execution of the program being debugged stops.
+ If AUTO (which is the default), or there's no line info to determine
+ the source line of the next instruction, display disassembly of next
+ instruction instead. */
-static int
-print_args_stub (void *args)
+static enum auto_boolean disassemble_next_line;
+
+static void
+show_disassemble_next_line (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
{
- int numargs;
- struct print_args_args *p = (struct print_args_args *) args;
+ fprintf_filtered (file,
+ _("Debugger's willingness to use "
+ "disassemble-next-line is %s.\n"),
+ value);
+}
- numargs = FRAME_NUM_ARGS (p->fi);
- print_frame_args (p->func, p->fi, numargs, p->stream);
- return 0;
+/* Use TRY_CATCH to catch the exception from the gdb_disassembly
+ because it will be broken by filter sometime. */
+
+static void
+do_gdb_disassembly (struct gdbarch *gdbarch,
+ int how_many, CORE_ADDR low, CORE_ADDR high)
+{
+ volatile struct gdb_exception exception;
+
+ TRY_CATCH (exception, RETURN_MASK_ERROR)
+ {
+ gdb_disassembly (gdbarch, current_uiout, 0,
+ DISASSEMBLY_RAW_INSN, how_many,
+ low, high);
+ }
+ if (exception.reason < 0)
+ {
+ /* 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);
+ }
}
-/* Print information about a frame for frame "fi" at level "level".
- Used in "where" output, also used to emit breakpoint or step
- messages.
- LEVEL is the level of the frame, or -1 if it is the
- innermost frame but we don't want to print the level.
- The meaning of the SOURCE argument is:
- SRC_LINE: Print only source line
- LOCATION: Print only location
- LOC_AND_SRC: Print location and source line. */
+/* Print information about frame FRAME. The output is format according
+ to PRINT_LEVEL and PRINT_WHAT and PRINT_ARGS. The meaning of
+ PRINT_WHAT is:
+
+ SRC_LINE: Print only source line.
+ LOCATION: Print only location.
+ LOC_AND_SRC: Print location and source line.
+
+ Used in "where" output, and to emit breakpoint or step
+ messages. */
void
-print_frame_info (struct frame_info *fi, int level, int source, int args)
+print_frame_info (struct frame_info *frame, int print_level,
+ enum print_what print_what, int print_args)
{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
struct symtab_and_line sal;
int source_print;
int location_print;
+ struct ui_out *uiout = current_uiout;
- if (get_frame_type (fi) == DUMMY_FRAME
- || get_frame_type (fi) == SIGTRAMP_FRAME)
+ if (get_frame_type (frame) == DUMMY_FRAME
+ || get_frame_type (frame) == SIGTRAMP_FRAME
+ || get_frame_type (frame) == ARCH_FRAME)
{
struct cleanup *uiout_cleanup
= make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
- annotate_frame_begin (level == -1 ? 0 : level, get_frame_pc (fi));
+ annotate_frame_begin (print_level ? frame_relative_level (frame) : 0,
+ gdbarch, get_frame_pc (frame));
/* Do this regardless of SOURCE because we don't have any source
to list for this frame. */
- if (level >= 0)
+ if (print_level)
{
ui_out_text (uiout, "#");
- ui_out_field_fmt_int (uiout, 2, ui_left, "level", level);
+ ui_out_field_fmt_int (uiout, 2, ui_left, "level",
+ frame_relative_level (frame));
}
if (ui_out_is_mi_like_p (uiout))
{
annotate_frame_address ();
- ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi));
+ ui_out_field_core_addr (uiout, "addr",
+ gdbarch, get_frame_pc (frame));
annotate_frame_address_end ();
}
- if (get_frame_type (fi) == DUMMY_FRAME)
+ if (get_frame_type (frame) == DUMMY_FRAME)
{
annotate_function_call ();
ui_out_field_string (uiout, "func", "<function called from gdb>");
}
- else if (get_frame_type (fi) == SIGTRAMP_FRAME)
+ else if (get_frame_type (frame) == SIGTRAMP_FRAME)
{
annotate_signal_handler_caller ();
ui_out_field_string (uiout, "func", "<signal handler called>");
}
+ else if (get_frame_type (frame) == ARCH_FRAME)
+ {
+ ui_out_field_string (uiout, "func", "<cross-architecture call>");
+ }
ui_out_text (uiout, "\n");
annotate_frame_end ();
return;
}
- /* If fi is not the innermost frame, that normally means that fi->pc
- points to *after* the call instruction, and we want to get the
- line containing the call, never the next line. But if the next
- frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the next frame
- was not entered as the result of a call, and we want to get the
- line containing fi->pc. */
- find_frame_sal (fi, &sal);
+ /* If FRAME is not the innermost frame, that normally means that
+ FRAME->pc points to *after* the call instruction, and we want to
+ get the line containing the call, never the next line. But if
+ the next frame is a SIGTRAMP_FRAME or a DUMMY_FRAME, then the
+ next frame was not entered as the result of a call, and we want
+ to get the line containing FRAME->pc. */
+ find_frame_sal (frame, &sal);
- location_print = (source == LOCATION
- || source == LOC_AND_ADDRESS
- || source == SRC_AND_LOC);
+ location_print = (print_what == LOCATION
+ || print_what == LOC_AND_ADDRESS
+ || print_what == SRC_AND_LOC);
if (location_print || !sal.symtab)
- print_frame (fi, level, source, args, sal);
+ print_frame (frame, print_level, print_what, print_args, sal);
- source_print = (source == SRC_LINE || source == SRC_AND_LOC);
+ source_print = (print_what == SRC_LINE || print_what == SRC_AND_LOC);
- if (sal.symtab)
- set_current_source_symtab_and_line (&sal);
+ /* If disassemble-next-line is set to auto or on and doesn't have
+ the line debug messages for $pc, output the next instruction. */
+ if ((disassemble_next_line == AUTO_BOOLEAN_AUTO
+ || disassemble_next_line == AUTO_BOOLEAN_TRUE)
+ && source_print && !sal.symtab)
+ do_gdb_disassembly (get_frame_arch (frame), 1,
+ get_frame_pc (frame), get_frame_pc (frame) + 1);
if (source_print && sal.symtab)
{
- struct symtab_and_line cursal;
int done = 0;
- int mid_statement = (source == SRC_LINE) && (get_frame_pc (fi) != sal.pc);
+ int mid_statement = ((print_what == SRC_LINE)
+ && frame_show_address (frame, sal));
if (annotation_level)
done = identify_source_line (sal.symtab, sal.line, mid_statement,
- get_frame_pc (fi));
+ get_frame_pc (frame));
if (!done)
{
- if (print_frame_info_listing_hook)
- print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0);
+ if (deprecated_print_frame_info_listing_hook)
+ deprecated_print_frame_info_listing_hook (sal.symtab,
+ sal.line,
+ sal.line + 1, 0);
else
{
+ struct value_print_options opts;
+
+ get_user_print_options (&opts);
/* We used to do this earlier, but that is clearly
- wrong. This function is used by many different
+ wrong. This function is used by many different
parts of gdb, including normal_stop in infrun.c,
which uses this to print out the current PC
when we stepi/nexti into the middle of a source
- line. Only the command line really wants this
- behavior. Other UIs probably would like the
- ability to decide for themselves if it is desired. */
- if (addressprint && mid_statement)
+ line. Only the command line really wants this
+ behavior. Other UIs probably would like the
+ ability to decide for themselves if it is desired. */
+ if (opts.addressprint && mid_statement)
{
- ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi));
+ ui_out_field_core_addr (uiout, "addr",
+ gdbarch, get_frame_pc (frame));
ui_out_text (uiout, "\t");
}
print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
}
}
- /* Make sure we have at least a default source file */
- set_default_source_symtab_and_line ();
- cursal = get_current_source_symtab_and_line ();
- cursal.line = max (sal.line - get_lines_to_list () / 2, 1);
- set_current_source_symtab_and_line (&cursal);
+
+ /* If disassemble-next-line is set to on and there is line debug
+ messages, output assembly codes for next line. */
+ if (disassemble_next_line == AUTO_BOOLEAN_TRUE)
+ do_gdb_disassembly (get_frame_arch (frame), -1, sal.pc, sal.end);
}
- if (source != 0)
- set_default_breakpoint (1, get_frame_pc (fi), sal.symtab, sal.line);
+ if (print_what != LOCATION)
+ {
+ CORE_ADDR pc;
+
+ if (get_frame_pc_if_available (frame, &pc))
+ set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line);
+ else
+ 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
-print_frame (struct frame_info *fi,
- int level,
- int source,
- int args,
- struct symtab_and_line sal)
+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. FUNNAME needs to be freed by the caller. */
+
+void
+find_frame_funname (struct frame_info *frame, char **funname,
+ enum language *funlang, struct symbol **funcp)
{
struct symbol *func;
- register char *funname = 0;
- enum language funlang = language_unknown;
- struct ui_stream *stb;
- struct cleanup *old_chain;
- struct cleanup *list_chain;
- stb = ui_out_stream_new (uiout);
- old_chain = make_cleanup_ui_out_stream_delete (stb);
+ *funname = NULL;
+ *funlang = language_unknown;
+ if (funcp)
+ *funcp = NULL;
- func = find_pc_function (frame_address_in_block (fi));
+ func = get_frame_function (frame);
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). This also occurs if the user uses asm() to create
- a function but not stabs for it (in a file compiled -g).
+ 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). This also occurs if the user uses asm()
+ to create a function but not stabs for it (in a file compiled
+ with -g).
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; if this is
- ever changed many parts of GDB will need to be changed (and we'll
- create a find_pc_minimal_function or some such). */
-
- struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi));
- if (msymbol != NULL
- && (SYMBOL_VALUE_ADDRESS (msymbol)
+ I don't think this can ever cause any problems; there
+ shouldn't be any minimal symbols in the middle of a function;
+ if this is ever changed many parts of GDB will need to be
+ changed (and we'll create a find_pc_minimal_function or some
+ such). */
+
+ struct bound_minimal_symbol msymbol;
+
+ /* Don't attempt to do this for inlined functions, which do not
+ have a corresponding minimal symbol. */
+ if (!block_inlined_p (SYMBOL_BLOCK_VALUE (func)))
+ msymbol
+ = lookup_minimal_symbol_by_pc (get_frame_address_in_block (frame));
+ else
+ memset (&msymbol, 0, sizeof (msymbol));
+
+ if (msymbol.minsym != NULL
+ && (SYMBOL_VALUE_ADDRESS (msymbol.minsym)
> BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
{
-#if 0
- /* There is no particular reason to think the line number
- information is wrong. Someone might have just put in
- a label with asm() but left the line numbers alone. */
- /* In this case we have no way of knowing the source file
- and line number, so don't print them. */
- sal.symtab = 0;
-#endif
/* We also don't know anything about the function besides
its address and name. */
func = 0;
- funname = DEPRECATED_SYMBOL_NAME (msymbol);
- funlang = SYMBOL_LANGUAGE (msymbol);
+ *funname = xstrdup (SYMBOL_PRINT_NAME (msymbol.minsym));
+ *funlang = SYMBOL_LANGUAGE (msymbol.minsym);
}
else
{
- /* I'd like to use SYMBOL_PRINT_NAME() here, to display the
- demangled name that we already have stored in the symbol
- table, but we stored a version with DMGL_PARAMS turned
- on, and here we don't want to display parameters. So call
- the demangler again, with DMGL_ANSI only. (Yes, I know
- that printf_symbol_filtered() will again try to demangle
- the name on the fly, but the issue is that if
- cplus_demangle() fails here, it'll fail there too. So we
- want to catch the failure ("demangled==NULL" case below)
- here, while we still have our hands on the function
- symbol.) */
- char *demangled;
- funname = DEPRECATED_SYMBOL_NAME (func);
- funlang = SYMBOL_LANGUAGE (func);
- if (funlang == language_cplus)
+ *funname = xstrdup (SYMBOL_PRINT_NAME (func));
+ *funlang = SYMBOL_LANGUAGE (func);
+ if (funcp)
+ *funcp = func;
+ if (*funlang == language_cplus)
{
- demangled = cplus_demangle (funname, DMGL_ANSI);
- if (demangled == NULL)
- /* If the demangler fails, try the demangled name from
- the symbol table. This'll have parameters, but
- that's preferable to diplaying a mangled name. */
- funname = SYMBOL_PRINT_NAME (func);
+ /* It seems appropriate to use SYMBOL_PRINT_NAME() here,
+ to display the demangled name that we already have
+ stored in the symbol table, but we stored a version
+ with DMGL_PARAMS turned on, and here we don't want to
+ display parameters. So remove the parameters. */
+ char *func_only = cp_remove_params (*funname);
+
+ if (func_only)
+ {
+ xfree (*funname);
+ *funname = func_only;
+ }
}
}
}
else
{
- struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (frame_address_in_block (fi));
- if (msymbol != NULL)
+ struct bound_minimal_symbol msymbol;
+ CORE_ADDR pc;
+
+ if (!get_frame_address_in_block_if_available (frame, &pc))
+ return;
+
+ msymbol = lookup_minimal_symbol_by_pc (pc);
+ if (msymbol.minsym != NULL)
{
- funname = DEPRECATED_SYMBOL_NAME (msymbol);
- funlang = SYMBOL_LANGUAGE (msymbol);
+ *funname = xstrdup (SYMBOL_PRINT_NAME (msymbol.minsym));
+ *funlang = SYMBOL_LANGUAGE (msymbol.minsym);
}
}
+}
+
+static void
+print_frame (struct frame_info *frame, int print_level,
+ enum print_what print_what, int print_args,
+ struct symtab_and_line sal)
+{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ struct ui_out *uiout = current_uiout;
+ char *funname = NULL;
+ enum language funlang = language_unknown;
+ struct ui_file *stb;
+ struct cleanup *old_chain, *list_chain;
+ struct value_print_options opts;
+ struct symbol *func;
+ CORE_ADDR pc = 0;
+ int pc_p;
+
+ pc_p = get_frame_pc_if_available (frame, &pc);
+
+ stb = mem_fileopen ();
+ old_chain = make_cleanup_ui_file_delete (stb);
- annotate_frame_begin (level == -1 ? 0 : level, get_frame_pc (fi));
+ find_frame_funname (frame, &funname, &funlang, &func);
+ make_cleanup (xfree, funname);
+
+ annotate_frame_begin (print_level ? frame_relative_level (frame) : 0,
+ gdbarch, pc);
list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
- if (level >= 0)
+ if (print_level)
{
ui_out_text (uiout, "#");
- ui_out_field_fmt_int (uiout, 2, ui_left, "level", level);
+ ui_out_field_fmt_int (uiout, 2, ui_left, "level",
+ frame_relative_level (frame));
}
- if (addressprint)
- if (get_frame_pc (fi) != sal.pc
- || !sal.symtab
- || source == LOC_AND_ADDRESS)
+ get_user_print_options (&opts);
+ if (opts.addressprint)
+ if (!sal.symtab
+ || frame_show_address (frame, sal)
+ || print_what == LOC_AND_ADDRESS)
{
annotate_frame_address ();
- ui_out_field_core_addr (uiout, "addr", get_frame_pc (fi));
+ if (pc_p)
+ ui_out_field_core_addr (uiout, "addr", gdbarch, pc);
+ else
+ ui_out_field_string (uiout, "addr", "<unavailable>");
annotate_frame_address_end ();
ui_out_text (uiout, " in ");
}
annotate_frame_function_name ();
- fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang,
- DMGL_ANSI);
+ fprintf_symbol_filtered (stb, funname ? funname : "??",
+ funlang, DMGL_ANSI);
ui_out_field_stream (uiout, "func", stb);
ui_out_wrap_hint (uiout, " ");
annotate_frame_args ();
ui_out_text (uiout, " (");
- if (args)
+ if (print_args)
{
- struct print_args_args args;
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ int numargs;
struct cleanup *args_list_chain;
- args.fi = fi;
- args.func = func;
- args.stream = gdb_stdout;
+ volatile struct gdb_exception e;
+
+ if (gdbarch_frame_num_args_p (gdbarch))
+ {
+ numargs = gdbarch_frame_num_args (gdbarch, frame);
+ gdb_assert (numargs >= 0);
+ }
+ else
+ numargs = -1;
+
args_list_chain = make_cleanup_ui_out_list_begin_end (uiout, "args");
- catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL);
- /* FIXME: args must be a list. If one argument is a string it will
- have " that will not be properly escaped. */
+ TRY_CATCH (e, RETURN_MASK_ERROR)
+ {
+ print_frame_args (func, frame, numargs, gdb_stdout);
+ }
+ /* FIXME: ARGS must be a list. If one argument is a string it
+ will have " that will not be properly escaped. */
/* Invoke ui_out_tuple_end. */
do_cleanups (args_list_chain);
QUIT;
}
ui_out_text (uiout, ")");
- if (sal.symtab && sal.symtab->filename)
+ if (sal.symtab)
{
+ const char *filename_display;
+
+ filename_display = symtab_to_filename_for_display (sal.symtab);
annotate_frame_source_begin ();
ui_out_wrap_hint (uiout, " ");
ui_out_text (uiout, " at ");
annotate_frame_source_file ();
- ui_out_field_string (uiout, "file", sal.symtab->filename);
+ ui_out_field_string (uiout, "file", filename_display);
+ if (ui_out_is_mi_like_p (uiout))
+ {
+ const char *fullname = symtab_to_fullname (sal.symtab);
+
+ ui_out_field_string (uiout, "fullname", fullname);
+ }
annotate_frame_source_file_end ();
ui_out_text (uiout, ":");
annotate_frame_source_line ();
annotate_frame_source_end ();
}
-#ifdef PC_SOLIB
- if (!funname || (!sal.symtab || !sal.symtab->filename))
+ if (pc_p && (funname == NULL || sal.symtab == NULL))
{
- char *lib = PC_SOLIB (get_frame_pc (fi));
+ char *lib = solib_name_from_address (get_frame_program_space (frame),
+ get_frame_pc (frame));
+
if (lib)
{
annotate_frame_where ();
ui_out_field_string (uiout, "from", lib);
}
}
-#endif /* PC_SOLIB */
/* do_cleanups will call ui_out_tuple_end() for us. */
do_cleanups (list_chain);
do_cleanups (old_chain);
}
\f
-/* Show the frame info. If this is the tui, it will be shown in
- the source display otherwise, nothing is done */
-void
-show_stack_frame (struct frame_info *fi)
-{
-}
-\f
-/* Read a frame specification in whatever the appropriate format is.
- Call error() if the specification is in any way invalid (i.e.
- this function never returns NULL). */
+/* Read a frame specification in whatever the appropriate format is
+ from FRAME_EXP. Call error(), printing MESSAGE, if the
+ specification is in any way invalid (so this function never returns
+ NULL). When SEPECTED_P is non-NULL set its target to indicate that
+ the default selected frame was used. */
-struct frame_info *
-parse_frame_specification (char *frame_exp)
+static struct frame_info *
+parse_frame_specification_1 (const char *frame_exp, const char *message,
+ int *selected_frame_p)
{
- int numargs = 0;
-#define MAXARGS 4
- CORE_ADDR args[MAXARGS];
- int level;
+ int numargs;
+ struct value *args[4];
+ CORE_ADDR addrs[ARRAY_SIZE (args)];
- if (frame_exp)
+ if (frame_exp == NULL)
+ numargs = 0;
+ else
{
- char *addr_string, *p;
- struct cleanup *tmp_cleanup;
-
- while (*frame_exp == ' ')
- frame_exp++;
-
- while (*frame_exp)
+ numargs = 0;
+ while (1)
{
- if (numargs > MAXARGS)
- error ("Too many args in frame specification");
- /* Parse an argument. */
- for (p = frame_exp; *p && *p != ' '; p++)
- ;
- addr_string = savestring (frame_exp, p - frame_exp);
-
- {
- struct value *vp;
+ char *addr_string;
+ struct cleanup *cleanup;
+ const char *p;
- tmp_cleanup = make_cleanup (xfree, addr_string);
-
- /* NOTE: we call parse_and_eval and then both
- value_as_long and value_as_address rather than calling
- parse_and_eval_long and parse_and_eval_address because
- of the issue of potential side effects from evaluating
- the expression. */
- vp = parse_and_eval (addr_string);
- if (numargs == 0)
- level = value_as_long (vp);
-
- args[numargs++] = value_as_address (vp);
- do_cleanups (tmp_cleanup);
- }
+ /* Skip leading white space, bail of EOL. */
+ frame_exp = skip_spaces_const (frame_exp);
+ if (!*frame_exp)
+ break;
- /* Skip spaces, move to possible next arg. */
- while (*p == ' ')
- p++;
+ /* Parse the argument, extract it, save it. */
+ for (p = frame_exp;
+ *p && !isspace (*p);
+ p++);
+ addr_string = savestring (frame_exp, p - frame_exp);
frame_exp = p;
+ cleanup = make_cleanup (xfree, addr_string);
+
+ /* NOTE: Parse and evaluate expression, but do not use
+ functions such as parse_and_eval_long or
+ parse_and_eval_address to also extract the value.
+ Instead value_as_long and value_as_address are used.
+ This avoids problems with expressions that contain
+ side-effects. */
+ if (numargs >= ARRAY_SIZE (args))
+ error (_("Too many args in frame specification"));
+ args[numargs++] = parse_and_eval (addr_string);
+
+ do_cleanups (cleanup);
}
}
- switch (numargs)
+ /* If no args, default to the selected frame. */
+ if (numargs == 0)
{
- case 0:
- if (deprecated_selected_frame == NULL)
- error ("No selected frame.");
- return deprecated_selected_frame;
- /* NOTREACHED */
- case 1:
- {
- struct frame_info *fid =
- find_relative_frame (get_current_frame (), &level);
- struct frame_info *tfid;
-
- if (level == 0)
- /* find_relative_frame was successful */
- return fid;
-
- /* If SETUP_ARBITRARY_FRAME is defined, then frame specifications
- take at least 2 addresses. It is important to detect this case
- here so that "frame 100" does not give a confusing error message
- like "frame specification requires two addresses". This of course
- does not solve the "frame 100" problem for machines on which
- a frame specification can be made with one address. To solve
- that, we need a new syntax for a specifying a frame by address.
- I think the cleanest syntax is $frame(0x45) ($frame(0x23,0x45) for
- two args, etc.), but people might think that is too much typing,
- so I guess *0x23,0x45 would be a possible alternative (commas
- really should be used instead of spaces to delimit; using spaces
- normally works in an expression). */
-#ifdef SETUP_ARBITRARY_FRAME
- error ("No frame %s", paddr_d (args[0]));
-#endif
+ if (selected_frame_p != NULL)
+ (*selected_frame_p) = 1;
+ return get_selected_frame (message);
+ }
- /* If (s)he specifies the frame with an address, he deserves what
- (s)he gets. Still, give the highest one that matches. */
+ /* None of the remaining use the selected frame. */
+ if (selected_frame_p != NULL)
+ (*selected_frame_p) = 0;
- for (fid = get_current_frame ();
- fid && get_frame_base (fid) != args[0];
- fid = get_prev_frame (fid))
- ;
+ /* Assume the single arg[0] is an integer, and try using that to
+ select a frame relative to current. */
+ if (numargs == 1)
+ {
+ struct frame_info *fid;
+ int level = value_as_long (args[0]);
- if (fid)
- while ((tfid = get_prev_frame (fid)) &&
- (get_frame_base (tfid) == args[0]))
- fid = tfid;
+ fid = find_relative_frame (get_current_frame (), &level);
+ if (level == 0)
+ /* find_relative_frame was successful. */
+ return fid;
+ }
- /* We couldn't identify the frame as an existing frame, but
- perhaps we can create one with a single argument. */
+ /* Convert each value into a corresponding address. */
+ {
+ int i;
+
+ for (i = 0; i < numargs; i++)
+ addrs[i] = value_as_address (args[i]);
+ }
+
+ /* Assume that the single arg[0] is an address, use that to identify
+ a frame with a matching ID. Should this also accept stack/pc or
+ stack/pc/special. */
+ if (numargs == 1)
+ {
+ struct frame_id id = frame_id_build_wild (addrs[0]);
+ struct frame_info *fid;
+
+ /* If (s)he specifies the frame with an address, he deserves
+ what (s)he gets. Still, give the highest one that matches.
+ (NOTE: cagney/2004-10-29: Why highest, or outer-most, I don't
+ know). */
+ for (fid = get_current_frame ();
+ fid != NULL;
+ fid = get_prev_frame (fid))
+ {
+ if (frame_id_eq (id, get_frame_id (fid)))
+ {
+ struct frame_info *prev_frame;
+
+ while (1)
+ {
+ prev_frame = get_prev_frame (fid);
+ if (!prev_frame
+ || !frame_id_eq (id, get_frame_id (prev_frame)))
+ break;
+ fid = prev_frame;
+ }
+ return fid;
+ }
+ }
}
- default:
-#ifdef SETUP_ARBITRARY_FRAME
- return SETUP_ARBITRARY_FRAME (numargs, args);
-#else
- /* Usual case. Do it here rather than have everyone supply
- a SETUP_ARBITRARY_FRAME that does this. */
- if (numargs == 1)
- return create_new_frame (args[0], 0);
- error ("Too many args in frame specification");
-#endif
- /* NOTREACHED */
- }
- /* NOTREACHED */
+ /* We couldn't identify the frame as an existing frame, but
+ perhaps we can create one with a single argument. */
+ if (numargs == 1)
+ return create_new_frame (addrs[0], 0);
+ else if (numargs == 2)
+ return create_new_frame (addrs[0], addrs[1]);
+ else
+ error (_("Too many args in frame specification"));
+}
+
+static struct frame_info *
+parse_frame_specification (char *frame_exp)
+{
+ return parse_frame_specification_1 (frame_exp, NULL, NULL);
}
-/* Print verbosely the selected frame or the frame at address ADDR.
- This means absolutely all information in the frame is printed. */
+/* Print verbosely the selected frame or the frame at address
+ ADDR_EXP. Absolutely all information in the frame is printed. */
static void
frame_info (char *addr_exp, int from_tty)
struct symbol *func;
struct symtab *s;
struct frame_info *calling_frame_info;
- int i, count, numregs;
- char *funname = 0;
+ int numregs;
+ const char *funname = 0;
enum language funlang = language_unknown;
const char *pc_regname;
+ int selected_frame_p;
+ struct gdbarch *gdbarch;
+ struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
+ CORE_ADDR frame_pc;
+ int frame_pc_p;
+ CORE_ADDR caller_pc;
- if (!target_has_stack)
- error ("No stack.");
+ fi = parse_frame_specification_1 (addr_exp, "No stack.", &selected_frame_p);
+ gdbarch = get_frame_arch (fi);
/* Name of the value returned by get_frame_pc(). Per comments, "pc"
is not a good name. */
- if (PC_REGNUM >= 0)
- /* OK, this is weird. The PC_REGNUM hardware register's value can
+ if (gdbarch_pc_regnum (gdbarch) >= 0)
+ /* OK, this is weird. The gdbarch_pc_regnum hardware register's value can
easily not match that of the internal value returned by
get_frame_pc(). */
- pc_regname = REGISTER_NAME (PC_REGNUM);
+ pc_regname = gdbarch_register_name (gdbarch, gdbarch_pc_regnum (gdbarch));
else
- /* But then, this is weird to. Even without PC_REGNUM, an
+ /* But then, this is weird to. Even without gdbarch_pc_regnum, an
architectures will often have a hardware register called "pc",
and that register's value, again, can easily not match
get_frame_pc(). */
pc_regname = "pc";
- fi = parse_frame_specification (addr_exp);
- if (fi == NULL)
- error ("Invalid frame specified.");
-
+ frame_pc_p = get_frame_pc_if_available (fi, &frame_pc);
find_frame_sal (fi, &sal);
func = get_frame_function (fi);
- /* FIXME: cagney/2002-11-28: Why bother? Won't sal.symtab contain
- the same value. */
- s = find_pc_symtab (get_frame_pc (fi));
+ s = sal.symtab;
if (func)
{
- /* I'd like to use SYMBOL_PRINT_NAME() here, to display
- * the demangled name that we already have stored in
- * the symbol table, but we stored a version with
- * DMGL_PARAMS turned on, and here we don't want
- * to display parameters. So call the demangler again,
- * with DMGL_ANSI only. RT
- * (Yes, I know that printf_symbol_filtered() will
- * again try to demangle the name on the fly, but
- * the issue is that if cplus_demangle() fails here,
- * it'll fail there too. So we want to catch the failure
- * ("demangled==NULL" case below) here, while we still
- * have our hands on the function symbol.)
- */
- char *demangled;
- funname = DEPRECATED_SYMBOL_NAME (func);
+ funname = SYMBOL_PRINT_NAME (func);
funlang = SYMBOL_LANGUAGE (func);
if (funlang == language_cplus)
{
- demangled = cplus_demangle (funname, DMGL_ANSI);
- /* If the demangler fails, try the demangled name
- * from the symbol table. This'll have parameters,
- * but that's preferable to diplaying a mangled name.
- */
- if (demangled == NULL)
- funname = SYMBOL_PRINT_NAME (func);
+ /* It seems appropriate to use SYMBOL_PRINT_NAME() here,
+ to display the demangled name that we already have
+ stored in the symbol table, but we stored a version
+ with DMGL_PARAMS turned on, and here we don't want to
+ display parameters. So remove the parameters. */
+ char *func_only = cp_remove_params (funname);
+
+ if (func_only)
+ {
+ funname = func_only;
+ make_cleanup (xfree, func_only);
+ }
}
}
- else
+ else if (frame_pc_p)
{
- register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (get_frame_pc (fi));
- if (msymbol != NULL)
+ struct bound_minimal_symbol msymbol;
+
+ msymbol = lookup_minimal_symbol_by_pc (frame_pc);
+ if (msymbol.minsym != NULL)
{
- funname = DEPRECATED_SYMBOL_NAME (msymbol);
- funlang = SYMBOL_LANGUAGE (msymbol);
+ funname = SYMBOL_PRINT_NAME (msymbol.minsym);
+ funlang = SYMBOL_LANGUAGE (msymbol.minsym);
}
}
calling_frame_info = get_prev_frame (fi);
- if (!addr_exp && frame_relative_level (deprecated_selected_frame) >= 0)
+ if (selected_frame_p && frame_relative_level (fi) >= 0)
{
- printf_filtered ("Stack level %d, frame at ",
- frame_relative_level (deprecated_selected_frame));
- print_address_numeric (get_frame_base (fi), 1, gdb_stdout);
- printf_filtered (":\n");
+ printf_filtered (_("Stack level %d, frame at "),
+ frame_relative_level (fi));
}
else
{
- printf_filtered ("Stack frame at ");
- print_address_numeric (get_frame_base (fi), 1, gdb_stdout);
- printf_filtered (":\n");
+ printf_filtered (_("Stack frame at "));
}
+ fputs_filtered (paddress (gdbarch, get_frame_base (fi)), gdb_stdout);
+ printf_filtered (":\n");
printf_filtered (" %s = ", pc_regname);
- print_address_numeric (get_frame_pc (fi), 1, gdb_stdout);
+ if (frame_pc_p)
+ fputs_filtered (paddress (gdbarch, get_frame_pc (fi)), gdb_stdout);
+ else
+ fputs_filtered ("<unavailable>", gdb_stdout);
wrap_here (" ");
if (funname)
}
wrap_here (" ");
if (sal.symtab)
- printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line);
+ printf_filtered (" (%s:%d)", symtab_to_filename_for_display (sal.symtab),
+ sal.line);
puts_filtered ("; ");
wrap_here (" ");
printf_filtered ("saved %s ", pc_regname);
- print_address_numeric (frame_pc_unwind (fi), 1, gdb_stdout);
+ if (frame_unwind_caller_pc_if_available (fi, &caller_pc))
+ fputs_filtered (paddress (gdbarch, caller_pc), gdb_stdout);
+ else
+ fputs_filtered ("<unavailable>", gdb_stdout);
printf_filtered ("\n");
- {
- int frameless;
- frameless = FRAMELESS_FUNCTION_INVOCATION (fi);
- if (frameless)
- printf_filtered (" (FRAMELESS),");
- }
+ if (calling_frame_info == NULL)
+ {
+ enum unwind_stop_reason reason;
- if (calling_frame_info)
+ reason = get_frame_unwind_stop_reason (fi);
+ if (reason != UNWIND_NO_REASON)
+ 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)));
+ else
{
printf_filtered (" called by frame at ");
- print_address_numeric (get_frame_base (calling_frame_info),
- 1, gdb_stdout);
+ fputs_filtered (paddress (gdbarch, get_frame_base (calling_frame_info)),
+ gdb_stdout);
}
if (get_next_frame (fi) && calling_frame_info)
puts_filtered (",");
if (get_next_frame (fi))
{
printf_filtered (" caller of frame at ");
- print_address_numeric (get_frame_base (get_next_frame (fi)), 1,
- gdb_stdout);
+ fputs_filtered (paddress (gdbarch, get_frame_base (get_next_frame (fi))),
+ gdb_stdout);
}
if (get_next_frame (fi) || calling_frame_info)
puts_filtered ("\n");
+
if (s)
printf_filtered (" source language %s.\n",
language_str (s->language));
-#ifdef PRINT_EXTRA_FRAME_INFO
- PRINT_EXTRA_FRAME_INFO (fi);
-#endif
-
{
/* Address of the argument list for this frame, or 0. */
CORE_ADDR arg_list = get_frame_args_address (fi);
else
{
printf_filtered (" Arglist at ");
- print_address_numeric (arg_list, 1, gdb_stdout);
+ fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout);
printf_filtered (",");
- numargs = FRAME_NUM_ARGS (fi);
- if (numargs < 0)
- puts_filtered (" args: ");
- else if (numargs == 0)
- puts_filtered (" no args.");
- else if (numargs == 1)
- puts_filtered (" 1 arg: ");
+ if (!gdbarch_frame_num_args_p (gdbarch))
+ {
+ numargs = -1;
+ puts_filtered (" args: ");
+ }
else
- printf_filtered (" %d args: ", numargs);
+ {
+ numargs = gdbarch_frame_num_args (gdbarch, fi);
+ gdb_assert (numargs >= 0);
+ if (numargs == 0)
+ puts_filtered (" no args.");
+ else if (numargs == 1)
+ puts_filtered (" 1 arg: ");
+ else
+ printf_filtered (" %d args: ", numargs);
+ }
print_frame_args (func, fi, numargs, gdb_stdout);
puts_filtered ("\n");
}
else
{
printf_filtered (" Locals at ");
- print_address_numeric (arg_list, 1, gdb_stdout);
+ fputs_filtered (paddress (gdbarch, arg_list), gdb_stdout);
printf_filtered (",");
}
}
- if (DEPRECATED_FRAME_INIT_SAVED_REGS_P ()
- && get_frame_saved_regs (fi) == NULL)
- DEPRECATED_FRAME_INIT_SAVED_REGS (fi);
/* Print as much information as possible on the location of all the
registers. */
{
enum lval_type lval;
int optimized;
+ int unavailable;
CORE_ADDR addr;
int realnum;
int count;
at one stage the frame cached the previous frame's SP instead
of its address, hence it was easiest to just display the cached
value. */
- if (SP_REGNUM >= 0)
+ if (gdbarch_sp_regnum (gdbarch) >= 0)
{
/* Find out the location of the saved stack pointer with out
actually evaluating it. */
- frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr,
+ frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch),
+ &optimized, &unavailable, &lval, &addr,
&realnum, NULL);
- if (!optimized && lval == not_lval)
+ if (!optimized && !unavailable && lval == not_lval)
{
- char value[MAX_REGISTER_SIZE];
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int sp_size = register_size (gdbarch, gdbarch_sp_regnum (gdbarch));
+ gdb_byte value[MAX_REGISTER_SIZE];
CORE_ADDR sp;
- frame_register_unwind (fi, SP_REGNUM, &optimized, &lval, &addr,
+
+ frame_register_unwind (fi, gdbarch_sp_regnum (gdbarch),
+ &optimized, &unavailable, &lval, &addr,
&realnum, value);
/* NOTE: cagney/2003-05-22: This is assuming that the
stack pointer was packed as an unsigned integer. That
may or may not be valid. */
- sp = extract_unsigned_integer (value, REGISTER_RAW_SIZE (SP_REGNUM));
+ sp = extract_unsigned_integer (value, sp_size, byte_order);
printf_filtered (" Previous frame's sp is ");
- print_address_numeric (sp, 1, gdb_stdout);
+ fputs_filtered (paddress (gdbarch, sp), gdb_stdout);
printf_filtered ("\n");
need_nl = 0;
}
- else if (!optimized && lval == lval_memory)
+ else if (!optimized && !unavailable && lval == lval_memory)
{
printf_filtered (" Previous frame's sp at ");
- print_address_numeric (addr, 1, gdb_stdout);
+ fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
printf_filtered ("\n");
need_nl = 0;
}
- else if (!optimized && lval == lval_register)
+ else if (!optimized && !unavailable && lval == lval_register)
{
printf_filtered (" Previous frame's sp in %s\n",
- REGISTER_NAME (realnum));
+ gdbarch_register_name (gdbarch, realnum));
need_nl = 0;
}
/* else keep quiet. */
}
count = 0;
- numregs = NUM_REGS + NUM_PSEUDO_REGS;
+ numregs = gdbarch_num_regs (gdbarch)
+ + gdbarch_num_pseudo_regs (gdbarch);
for (i = 0; i < numregs; i++)
- if (i != SP_REGNUM)
+ if (i != gdbarch_sp_regnum (gdbarch)
+ && gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
{
/* Find out the location of the saved register without
fetching the corresponding value. */
- frame_register_unwind (fi, i, &optimized, &lval, &addr, &realnum,
- NULL);
+ frame_register_unwind (fi, i, &optimized, &unavailable,
+ &lval, &addr, &realnum, NULL);
/* For moment, only display registers that were saved on the
stack. */
- if (!optimized && lval == lval_memory)
+ if (!optimized && !unavailable && lval == lval_memory)
{
if (count == 0)
puts_filtered (" Saved registers:\n ");
else
puts_filtered (",");
wrap_here (" ");
- printf_filtered (" %s at ", REGISTER_NAME (i));
- print_address_numeric (addr, 1, gdb_stdout);
+ printf_filtered (" %s at ",
+ gdbarch_register_name (gdbarch, i));
+ fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
count++;
}
}
if (count || need_nl)
puts_filtered ("\n");
}
-}
-
-#if 0
-/* Set a limit on the number of frames printed by default in a
- backtrace. */
-
-static int backtrace_limit;
-
-static void
-set_backtrace_limit_command (char *count_exp, int from_tty)
-{
- int count = parse_and_eval_long (count_exp);
-
- if (count < 0)
- error ("Negative argument not meaningful as backtrace limit.");
-
- backtrace_limit = count;
-}
-static void
-backtrace_limit_info (char *arg, int from_tty)
-{
- if (arg)
- error ("\"Info backtrace-limit\" takes no arguments.");
-
- printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit);
+ do_cleanups (back_to);
}
-#endif
-/* Print briefly all stack frames or just the innermost COUNT frames. */
+/* Print briefly all stack frames or just the innermost COUNT_EXP
+ frames. */
-static void backtrace_command_1 (char *count_exp, int show_locals,
- int from_tty);
static void
-backtrace_command_1 (char *count_exp, int show_locals, int from_tty)
+backtrace_command_1 (char *count_exp, int show_locals, int no_filters,
+ int from_tty)
{
struct frame_info *fi;
- register int count;
- register int i;
- register struct frame_info *trailing;
- register int trailing_level;
+ int count;
+ int i;
+ struct frame_info *trailing;
+ int trailing_level, py_start = 0, py_end = 0;
+ enum py_bt_status result = PY_BT_ERROR;
if (!target_has_stack)
- error ("No stack.");
+ error (_("No stack."));
- /* The following code must do two things. First, it must
- set the variable TRAILING to the frame from which we should start
+ /* The following code must do two things. First, it must set the
+ variable TRAILING to the frame from which we should start
printing. Second, it must set the variable count to the number
of frames which we should print, or -1 if all of them. */
trailing = get_current_frame ();
- /* The target can be in a state where there is no valid frames
- (e.g., just connected). */
- if (trailing == NULL)
- error ("No stack.");
-
trailing_level = 0;
if (count_exp)
{
{
struct frame_info *current;
+ py_start = count;
count = -count;
current = trailing;
current = get_prev_frame (current);
}
- /* Will stop when CURRENT reaches the top of the stack. TRAILING
- will be COUNT below it. */
+ /* Will stop when CURRENT reaches the top of the stack.
+ TRAILING will be COUNT below it. */
while (current)
{
QUIT;
count = -1;
}
+ else
+ {
+ py_start = 0;
+ py_end = count;
+ }
}
else
- count = -1;
+ {
+ py_end = -1;
+ count = -1;
+ }
if (info_verbose)
{
- struct partial_symtab *ps;
-
- /* Read in symbols for all of the frames. Need to do this in
- a separate pass so that "Reading in symbols for xxx" messages
- don't screw up the appearance of the backtrace. Also
- if people have strong opinions against reading symbols for
+ /* Read in symbols for all of the frames. Need to do this in a
+ separate pass so that "Reading in symbols for xxx" messages
+ don't screw up the appearance of the backtrace. Also if
+ people have strong opinions against reading symbols for
backtrace this may have to be an option. */
i = count;
- for (fi = trailing;
- fi != NULL && i--;
- fi = get_prev_frame (fi))
+ for (fi = trailing; fi != NULL && i--; fi = get_prev_frame (fi))
{
+ CORE_ADDR pc;
+
QUIT;
- ps = find_pc_psymtab (frame_address_in_block (fi));
- if (ps)
- PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */
+ pc = get_frame_address_in_block (fi);
+ find_pc_sect_symtab_via_partial (pc, find_pc_mapped_section (pc));
}
}
- for (i = 0, fi = trailing;
- fi && count--;
- i++, fi = get_prev_frame (fi))
+ if (! no_filters)
{
- QUIT;
+ int flags = PRINT_LEVEL | PRINT_FRAME_INFO | PRINT_ARGS;
+ enum py_frame_args arg_type;
- /* Don't use print_stack_frame; if an error() occurs it probably
- means further attempts to backtrace would fail (on the other
- hand, perhaps the code does or could be fixed to make sure
- the frame->prev field gets set to NULL in that case). */
- print_frame_info (fi, trailing_level + i, 0, 1);
if (show_locals)
- print_frame_local_vars (fi, 1, gdb_stdout);
+ flags |= PRINT_LOCALS;
+
+ if (!strcmp (print_frame_arguments, "scalars"))
+ arg_type = CLI_SCALAR_VALUES;
+ else if (!strcmp (print_frame_arguments, "all"))
+ arg_type = CLI_ALL_VALUES;
+ else
+ arg_type = NO_VALUES;
+
+ result = apply_frame_filter (get_current_frame (), flags, arg_type,
+ current_uiout, py_start, py_end);
+
}
+ /* Run the inbuilt backtrace if there are no filters registered, or
+ "no-filters" has been specified from the command. */
+ if (no_filters || result == PY_BT_NO_FILTERS)
+ {
+ for (i = 0, fi = trailing; fi && count--; i++, fi = get_prev_frame (fi))
+ {
+ QUIT;
+
+ /* Don't use print_stack_frame; if an error() occurs it probably
+ means further attempts to backtrace would fail (on the other
+ hand, perhaps the code does or could be fixed to make sure
+ the frame->prev field gets set to NULL in that case). */
+
+ print_frame_info (fi, 1, LOCATION, 1);
+ if (show_locals)
+ {
+ 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;
+ }
- /* If we've stopped before the end, mention that. */
- if (fi && from_tty)
- printf_filtered ("(More stack frames follow...)\n");
+ /* If we've stopped before the end, mention that. */
+ if (fi && from_tty)
+ printf_filtered (_("(More stack frames follow...)\n"));
+
+ /* If we've run out of frames, and the reason appears to be an error
+ condition, print it. */
+ if (fi == NULL && trailing != NULL)
+ {
+ enum unwind_stop_reason reason;
+
+ reason = get_frame_unwind_stop_reason (trailing);
+ if (reason >= UNWIND_FIRST_ERROR)
+ printf_filtered (_("Backtrace stopped: %s\n"),
+ frame_stop_reason_string (reason));
+ }
+ }
}
static void
backtrace_command (char *arg, int from_tty)
{
- struct cleanup *old_chain = (struct cleanup *) NULL;
- char **argv = (char **) NULL;
- int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0;
- char *argPtr = arg;
+ struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
+ int fulltrace_arg = -1, arglen = 0, argc = 0, no_filters = -1;
+ int user_arg = 0;
- if (arg != (char *) NULL)
+ if (arg)
{
+ char **argv;
int i;
- argv = buildargv (arg);
- old_chain = make_cleanup_freeargv (argv);
+ argv = gdb_buildargv (arg);
+ make_cleanup_freeargv (argv);
argc = 0;
- for (i = 0; (argv[i] != (char *) NULL); i++)
+ for (i = 0; argv[i]; i++)
{
unsigned int j;
- for (j = 0; (j < strlen (argv[i])); j++)
+ for (j = 0; j < strlen (argv[i]); j++)
argv[i][j] = tolower (argv[i][j]);
- if (argIndicatingFullTrace < 0 && subset_compare (argv[i], "full"))
- argIndicatingFullTrace = argc;
+ if (no_filters < 0 && subset_compare (argv[i], "no-filters"))
+ no_filters = argc;
else
{
- argc++;
- totArgLen += strlen (argv[i]);
+ if (fulltrace_arg < 0 && subset_compare (argv[i], "full"))
+ fulltrace_arg = argc;
+ else
+ {
+ user_arg++;
+ arglen += strlen (argv[i]);
+ }
}
+ argc++;
}
- totArgLen += argc;
- if (argIndicatingFullTrace >= 0)
+ arglen += user_arg;
+ if (fulltrace_arg >= 0 || no_filters >= 0)
{
- if (totArgLen > 0)
+ if (arglen > 0)
{
- argPtr = (char *) xmalloc (totArgLen + 1);
- if (!argPtr)
- nomem (0);
- else
+ arg = xmalloc (arglen + 1);
+ make_cleanup (xfree, arg);
+ arg[0] = 0;
+ for (i = 0; i < argc; i++)
{
- memset (argPtr, 0, totArgLen + 1);
- for (i = 0; (i < (argc + 1)); i++)
+ if (i != fulltrace_arg && i != no_filters)
{
- if (i != argIndicatingFullTrace)
- {
- strcat (argPtr, argv[i]);
- strcat (argPtr, " ");
- }
+ strcat (arg, argv[i]);
+ strcat (arg, " ");
}
}
}
else
- argPtr = (char *) NULL;
+ arg = NULL;
}
}
- backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty);
+ backtrace_command_1 (arg, fulltrace_arg >= 0 /* show_locals */,
+ no_filters >= 0 /* no frame-filters */, from_tty);
- if (argIndicatingFullTrace >= 0 && totArgLen > 0)
- xfree (argPtr);
-
- if (old_chain)
- do_cleanups (old_chain);
+ do_cleanups (old_chain);
}
-static void backtrace_full_command (char *arg, int from_tty);
static void
backtrace_full_command (char *arg, int from_tty)
{
- backtrace_command_1 (arg, 1, from_tty);
+ backtrace_command_1 (arg, 1 /* show_locals */, 0, from_tty);
}
\f
-/* Print the local variables of a block B active in FRAME.
- Return 1 if any variables were printed; 0 otherwise. */
+/* Iterate over the local variables of a block B, calling CB with
+ CB_DATA. */
-static int
-print_block_frame_locals (struct block *b, register struct frame_info *fi,
- int num_tabs, register struct ui_file *stream)
+static void
+iterate_over_block_locals (struct block *b,
+ iterate_over_block_arg_local_vars_cb cb,
+ void *cb_data)
{
- register int i, j;
- register struct symbol *sym;
- register int values_printed = 0;
+ struct block_iterator iter;
+ struct symbol *sym;
- ALL_BLOCK_SYMBOLS (b, i, sym)
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
{
switch (SYMBOL_CLASS (sym))
{
case LOC_LOCAL:
case LOC_REGISTER:
case LOC_STATIC:
- case LOC_BASEREG:
case LOC_COMPUTED:
- values_printed = 1;
- for (j = 0; j < num_tabs; j++)
- fputs_filtered ("\t", stream);
- fputs_filtered (SYMBOL_PRINT_NAME (sym), stream);
- fputs_filtered (" = ", stream);
- print_variable_value (sym, fi, stream);
- fprintf_filtered (stream, "\n");
+ if (SYMBOL_IS_ARGUMENT (sym))
+ break;
+ if (SYMBOL_DOMAIN (sym) == COMMON_BLOCK_DOMAIN)
+ break;
+ (*cb) (SYMBOL_PRINT_NAME (sym), sym, cb_data);
break;
default:
break;
}
}
- return values_printed;
}
+
/* Same, but print labels. */
+#if 0
+/* Commented out, as the code using this function has also been
+ commented out. FIXME:brobecker/2009-01-13: Find out why the code
+ was commented out in the first place. The discussion introducing
+ this change (2007-12-04: Support lexical blocks and function bodies
+ that occupy non-contiguous address ranges) did not explain why
+ this change was made. */
static int
-print_block_frame_labels (struct block *b, int *have_default,
- register struct ui_file *stream)
+print_block_frame_labels (struct gdbarch *gdbarch, struct block *b,
+ int *have_default, struct ui_file *stream)
{
- register int i;
- register struct symbol *sym;
- register int values_printed = 0;
+ struct block_iterator iter;
+ struct symbol *sym;
+ int values_printed = 0;
- ALL_BLOCK_SYMBOLS (b, i, sym)
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
{
- if (STREQ (DEPRECATED_SYMBOL_NAME (sym), "default"))
+ if (strcmp (SYMBOL_LINKAGE_NAME (sym), "default") == 0)
{
if (*have_default)
continue;
if (SYMBOL_CLASS (sym) == LOC_LABEL)
{
struct symtab_and_line sal;
+ struct value_print_options opts;
+
sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
values_printed = 1;
fputs_filtered (SYMBOL_PRINT_NAME (sym), stream);
- if (addressprint)
+ get_user_print_options (&opts);
+ if (opts.addressprint)
{
fprintf_filtered (stream, " ");
- print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream);
+ fputs_filtered (paddress (gdbarch, SYMBOL_VALUE_ADDRESS (sym)),
+ stream);
}
fprintf_filtered (stream, " in file %s, line %d\n",
sal.symtab->filename, sal.line);
}
}
+
return values_printed;
}
+#endif
-/* Print on STREAM all the local variables in frame FRAME,
- including all the blocks active in that frame
- at its current pc.
-
- Returns 1 if the job was done,
- or 0 if nothing was printed because we have no info
- on the function running in FRAME. */
+/* Iterate over all the local variables in block B, including all its
+ superblocks, stopping when the top-level block is reached. */
-static void
-print_frame_local_vars (register struct frame_info *fi, register int num_tabs,
- register struct ui_file *stream)
+void
+iterate_over_block_local_vars (struct block *block,
+ iterate_over_block_arg_local_vars_cb cb,
+ void *cb_data)
{
- register struct block *block = get_frame_block (fi, 0);
- register int values_printed = 0;
-
- if (block == 0)
- {
- fprintf_filtered (stream, "No symbol table info available.\n");
- return;
- }
-
- while (block != 0)
+ while (block)
{
- if (print_block_frame_locals (block, fi, num_tabs, stream))
- values_printed = 1;
- /* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
+ iterate_over_block_locals (block, cb, cb_data);
+ /* After handling the function's top-level block, stop. Don't
+ continue to its superblock, the block of per-file
+ symbols. */
if (BLOCK_FUNCTION (block))
break;
block = BLOCK_SUPERBLOCK (block);
}
-
- if (!values_printed)
- {
- fprintf_filtered (stream, "No locals.\n");
- }
}
-/* Same, but print labels. */
+/* Data to be passed around in the calls to the locals and args
+ iterators. */
+
+struct print_variable_and_value_data
+{
+ struct frame_id frame_id;
+ int num_tabs;
+ struct ui_file *stream;
+ int values_printed;
+};
+
+/* The callback for the locals and args iterators. */
static void
-print_frame_label_vars (register struct frame_info *fi, int this_level_only,
- register struct ui_file *stream)
+do_print_variable_and_value (const char *print_name,
+ struct symbol *sym,
+ void *cb_data)
{
- register struct blockvector *bl;
- register struct block *block = get_frame_block (fi, 0);
- register int values_printed = 0;
- int index, have_default = 0;
- char *blocks_printed;
- CORE_ADDR pc = get_frame_pc (fi);
+ struct print_variable_and_value_data *p = cb_data;
+ struct frame_info *frame;
- if (block == 0)
+ frame = frame_find_by_id (p->frame_id);
+ if (frame == NULL)
{
- fprintf_filtered (stream, "No symbol table info available.\n");
+ warning (_("Unable to restore previously selected frame."));
return;
}
- bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
- blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
+ print_variable_and_value (print_name, sym, frame, p->stream, p->num_tabs);
- while (block != 0)
- {
- CORE_ADDR end = BLOCK_END (block) - 4;
- int last_index;
+ /* print_variable_and_value invalidates FRAME. */
+ frame = NULL;
- 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;
+ p->values_printed = 1;
+}
- /* Don't print out blocks that have gone by. */
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
- index++;
+/* Print all variables from the innermost up to the function block of FRAME.
+ Print them with values to STREAM indented by NUM_TABS.
- while (index < last_index
- && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
- {
- if (blocks_printed[index] == 0)
- {
- if (print_block_frame_labels (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;
+ This function will invalidate FRAME. */
- /* After handling the function's top-level block, stop.
- Don't continue to its superblock, the block of
- per-file symbols. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
+static void
+print_frame_local_vars (struct frame_info *frame, int num_tabs,
+ struct ui_file *stream)
+{
+ struct print_variable_and_value_data cb_data;
+ struct block *block;
+ CORE_ADDR pc;
+
+ if (!get_frame_pc_if_available (frame, &pc))
+ {
+ fprintf_filtered (stream,
+ _("PC unavailable, cannot determine locals.\n"));
+ return;
}
- if (!values_printed && !this_level_only)
+ block = get_frame_block (frame, 0);
+ if (block == 0)
{
- fprintf_filtered (stream, "No catches.\n");
+ fprintf_filtered (stream, "No symbol table info available.\n");
+ return;
}
+
+ cb_data.frame_id = get_frame_id (frame);
+ cb_data.num_tabs = 4 * num_tabs;
+ cb_data.stream = stream;
+ cb_data.values_printed = 0;
+
+ iterate_over_block_local_vars (block,
+ 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"));
}
-/* ARGSUSED */
void
locals_info (char *args, int from_tty)
{
- if (!deprecated_selected_frame)
- error ("No frame selected.");
- print_frame_local_vars (deprecated_selected_frame, 0, gdb_stdout);
+ print_frame_local_vars (get_selected_frame (_("No frame selected.")),
+ 0, gdb_stdout);
}
-static void
-catch_info (char *ignore, int from_tty)
-{
- struct symtab_and_line *sal;
-
- /* Check for target support for exception handling */
- sal = target_enable_exception_callback (EX_EVENT_CATCH, 1);
- if (sal)
- {
- /* Currently not handling this */
- /* Ideally, here we should interact with the C++ runtime
- system to find the list of active handlers, etc. */
- fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n");
-#if 0
- if (!deprecated_selected_frame)
- error ("No frame selected.");
-#endif
- }
- else
- {
- /* Assume g++ compiled code -- old v 4.16 behaviour */
- if (!deprecated_selected_frame)
- error ("No frame selected.");
+/* Iterate over all the argument variables in block B.
- print_frame_label_vars (deprecated_selected_frame, 0, gdb_stdout);
- }
-}
+ Returns 1 if any argument was walked; 0 otherwise. */
-static void
-print_frame_arg_vars (register struct frame_info *fi,
- register struct ui_file *stream)
+void
+iterate_over_block_arg_vars (struct block *b,
+ iterate_over_block_arg_local_vars_cb cb,
+ void *cb_data)
{
- struct symbol *func = get_frame_function (fi);
- register struct block *b;
- register int i;
- register struct symbol *sym, *sym2;
- register int values_printed = 0;
-
- if (func == 0)
- {
- fprintf_filtered (stream, "No symbol table info available.\n");
- return;
- }
+ struct block_iterator iter;
+ struct symbol *sym, *sym2;
- b = SYMBOL_BLOCK_VALUE (func);
- ALL_BLOCK_SYMBOLS (b, i, sym)
+ ALL_BLOCK_SYMBOLS (b, iter, sym)
{
- switch (SYMBOL_CLASS (sym))
+ /* Don't worry about things which aren't arguments. */
+ if (SYMBOL_IS_ARGUMENT (sym))
{
- case LOC_ARG:
- case LOC_LOCAL_ARG:
- case LOC_REF_ARG:
- case LOC_REGPARM:
- case LOC_REGPARM_ADDR:
- case LOC_BASEREG_ARG:
- case LOC_COMPUTED_ARG:
- values_printed = 1;
- fputs_filtered (SYMBOL_PRINT_NAME (sym), stream);
- fputs_filtered (" = ", stream);
-
/* We have to look up the symbol because arguments can have
two entries (one a parameter, one a local) and the one we
want is the local, which lookup_symbol will find for us.
float). There are also LOC_ARG/LOC_REGISTER pairs which
are not combined in symbol-reading. */
- sym2 = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym),
- b, VAR_DOMAIN, (int *) NULL, (struct symtab **) NULL);
- print_variable_value (sym2, fi, stream);
- fprintf_filtered (stream, "\n");
- break;
-
- default:
- /* Don't worry about things which aren't arguments. */
- break;
+ sym2 = lookup_symbol (SYMBOL_LINKAGE_NAME (sym),
+ b, VAR_DOMAIN, NULL);
+ (*cb) (SYMBOL_PRINT_NAME (sym), sym2, cb_data);
}
}
- if (!values_printed)
+}
+
+/* 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)
+{
+ struct print_variable_and_value_data cb_data;
+ struct symbol *func;
+ CORE_ADDR pc;
+
+ if (!get_frame_pc_if_available (frame, &pc))
+ {
+ fprintf_filtered (stream, _("PC unavailable, cannot determine args.\n"));
+ return;
+ }
+
+ func = get_frame_function (frame);
+ if (func == NULL)
{
- fprintf_filtered (stream, "No arguments.\n");
+ fprintf_filtered (stream, _("No symbol table info available.\n"));
+ return;
}
+
+ 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"));
}
void
args_info (char *ignore, int from_tty)
{
- if (!deprecated_selected_frame)
- error ("No frame selected.");
- print_frame_arg_vars (deprecated_selected_frame, gdb_stdout);
+ print_frame_arg_vars (get_selected_frame (_("No frame selected.")),
+ gdb_stdout);
}
}
\f
-/* Select frame FI. Also print the stack frame and show the source if
- this is the tui version. */
+/* Select frame FRAME. Also print the stack frame and show the source
+ if this is the tui version. */
static void
-select_and_print_frame (struct frame_info *fi)
+select_and_print_frame (struct frame_info *frame)
{
- select_frame (fi);
- if (fi)
- {
- print_stack_frame (fi, frame_relative_level (fi), 1);
- }
+ select_frame (frame);
+ if (frame)
+ print_stack_frame (frame, 1, SRC_AND_LOC);
}
\f
/* Return the symbol-block in which the selected frame is executing.
struct block *
get_selected_block (CORE_ADDR *addr_in_block)
{
- if (!target_has_stack)
+ if (!has_stack_frames ())
return 0;
- /* NOTE: cagney/2002-11-28: Why go to all this effort to not create
- a selected/current frame? Perhaphs this function is called,
- indirectly, by WFI in "infrun.c" where avoiding the creation of
- an inner most frame is very important (it slows down single
- step). I suspect, though that this was true in the deep dark
- past but is no longer the case. A mindless look at all the
- callers tends to support this theory. I think we should be able
- to assume that there is always a selcted frame. */
- /* gdb_assert (deprecated_selected_frame != NULL); So, do you feel
- lucky? */
- if (!deprecated_selected_frame)
- {
- CORE_ADDR pc = read_pc ();
- if (addr_in_block != NULL)
- *addr_in_block = pc;
- return block_for_pc (pc);
- }
- return get_frame_block (deprecated_selected_frame, addr_in_block);
+ return get_frame_block (get_selected_frame (NULL), addr_in_block);
}
/* Find a frame a certain number of levels away from FRAME.
how much farther the original request asked to go. */
struct frame_info *
-find_relative_frame (register struct frame_info *frame,
- register int *level_offset_ptr)
+find_relative_frame (struct frame_info *frame, int *level_offset_ptr)
{
- register struct frame_info *prev;
- register struct frame_info *frame1;
-
- /* Going up is simple: just do get_prev_frame enough times
- or until initial frame is reached. */
+ /* Going up is simple: just call get_prev_frame enough times or
+ until the initial frame is reached. */
while (*level_offset_ptr > 0)
{
- prev = get_prev_frame (frame);
- if (prev == 0)
+ struct frame_info *prev = get_prev_frame (frame);
+
+ if (!prev)
break;
(*level_offset_ptr)--;
frame = prev;
}
+
/* Going down is just as simple. */
- if (*level_offset_ptr < 0)
+ while (*level_offset_ptr < 0)
{
- while (*level_offset_ptr < 0)
- {
- frame1 = get_next_frame (frame);
- if (!frame1)
- break;
- frame = frame1;
- (*level_offset_ptr)++;
- }
+ struct frame_info *next = get_next_frame (frame);
+
+ if (!next)
+ break;
+ (*level_offset_ptr)++;
+ frame = next;
}
+
return frame;
}
-/* The "select_frame" command. With no arg, NOP.
- With arg LEVEL_EXP, select the frame at level LEVEL if it is a
- valid level. Otherwise, treat level_exp as an address expression
- and select it. See parse_frame_specification for more info on proper
- frame expressions. */
+/* The "select_frame" command. With no argument this is a NOP.
+ Select the frame at level LEVEL_EXP if it is a valid level.
+ Otherwise, treat LEVEL_EXP as an address expression and select it.
+
+ See parse_frame_specification for more info on proper frame
+ expressions. */
void
select_frame_command (char *level_exp, int from_tty)
{
- struct frame_info *frame;
- int level = frame_relative_level (deprecated_selected_frame);
-
- if (!target_has_stack)
- error ("No stack.");
-
- frame = parse_frame_specification (level_exp);
-
- select_frame (frame);
- if (level != frame_relative_level (deprecated_selected_frame))
- selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame));
+ select_frame (parse_frame_specification_1 (level_exp, "No stack.", NULL));
}
-/* The "frame" command. With no arg, print selected frame briefly.
- With arg, behaves like select_frame and then prints the selected
- frame. */
+/* The "frame" command. With no argument, print the selected frame
+ briefly. With an argument, behave like select_frame and then print
+ the selected frame. */
-void
+static void
frame_command (char *level_exp, int from_tty)
{
select_frame_command (level_exp, from_tty);
- print_stack_frame (deprecated_selected_frame,
- frame_relative_level (deprecated_selected_frame), 1);
+ print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
}
-/* The XDB Compatibility command to print the current frame. */
+/* The XDB Compatibility command to print the current frame. */
static void
current_frame_command (char *level_exp, int from_tty)
{
- if (target_has_stack == 0 || deprecated_selected_frame == 0)
- error ("No stack.");
- print_stack_frame (deprecated_selected_frame,
- frame_relative_level (deprecated_selected_frame), 1);
+ print_stack_frame (get_selected_frame (_("No stack.")), 1, SRC_AND_LOC);
}
-/* Select the frame up one or COUNT stack levels
- from the previously selected frame, and print it briefly. */
+/* Select the frame up one or COUNT_EXP stack levels from the
+ previously selected frame, and print it briefly. */
-/* ARGSUSED */
static void
up_silently_base (char *count_exp)
{
- register struct frame_info *fi;
- int count = 1, count1;
+ struct frame_info *frame;
+ int count = 1;
+
if (count_exp)
count = parse_and_eval_long (count_exp);
- count1 = count;
- if (target_has_stack == 0 || deprecated_selected_frame == 0)
- error ("No stack.");
-
- fi = find_relative_frame (deprecated_selected_frame, &count1);
- if (count1 != 0 && count_exp == 0)
- error ("Initial frame selected; you cannot go up.");
- select_frame (fi);
- selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame));
+ frame = find_relative_frame (get_selected_frame ("No stack."), &count);
+ if (count != 0 && count_exp == NULL)
+ error (_("Initial frame selected; you cannot go up."));
+ select_frame (frame);
}
static void
up_command (char *count_exp, int from_tty)
{
up_silently_base (count_exp);
- print_stack_frame (deprecated_selected_frame,
- frame_relative_level (deprecated_selected_frame), 1);
+ print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
}
-/* Select the frame down one or COUNT stack levels
- from the previously selected frame, and print it briefly. */
+/* Select the frame down one or COUNT_EXP stack levels from the previously
+ selected frame, and print it briefly. */
-/* ARGSUSED */
static void
down_silently_base (char *count_exp)
{
- register struct frame_info *frame;
- int count = -1, count1;
+ struct frame_info *frame;
+ int count = -1;
+
if (count_exp)
count = -parse_and_eval_long (count_exp);
- count1 = count;
- if (target_has_stack == 0 || deprecated_selected_frame == 0)
- error ("No stack.");
-
- frame = find_relative_frame (deprecated_selected_frame, &count1);
- if (count1 != 0 && count_exp == 0)
+ frame = find_relative_frame (get_selected_frame ("No stack."), &count);
+ if (count != 0 && count_exp == NULL)
{
+ /* We only do this if COUNT_EXP is not specified. That way
+ "down" means to really go down (and let me know if that is
+ impossible), but "down 9999" can be used to mean go all the
+ way down without getting an error. */
- /* We only do this if count_exp is not specified. That way "down"
- means to really go down (and let me know if that is
- impossible), but "down 9999" can be used to mean go all the way
- down without getting an error. */
-
- error ("Bottom (i.e., innermost) frame selected; you cannot go down.");
+ error (_("Bottom (innermost) frame selected; you cannot go down."));
}
select_frame (frame);
- selected_frame_level_changed_event (frame_relative_level (deprecated_selected_frame));
}
-/* ARGSUSED */
static void
down_silently_command (char *count_exp, int from_tty)
{
down_command (char *count_exp, int from_tty)
{
down_silently_base (count_exp);
- print_stack_frame (deprecated_selected_frame,
- frame_relative_level (deprecated_selected_frame), 1);
+ print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
}
\f
+
void
return_command (char *retval_exp, int from_tty)
{
+ /* Initialize it just to avoid a GCC false warning. */
+ enum return_value_convention rv_conv = RETURN_VALUE_STRUCT_CONVENTION;
+ struct frame_info *thisframe;
+ struct gdbarch *gdbarch;
struct symbol *thisfun;
- CORE_ADDR selected_frame_addr;
- CORE_ADDR selected_frame_pc;
- struct frame_info *frame;
struct value *return_value = NULL;
+ struct value *function = NULL;
+ const char *query_prefix = "";
- if (deprecated_selected_frame == NULL)
- error ("No selected frame.");
- thisfun = get_frame_function (deprecated_selected_frame);
- selected_frame_addr = get_frame_base (deprecated_selected_frame);
- selected_frame_pc = get_frame_pc (deprecated_selected_frame);
+ thisframe = get_selected_frame ("No selected frame.");
+ thisfun = get_frame_function (thisframe);
+ gdbarch = get_frame_arch (thisframe);
- /* Compute the return value (if any -- possibly getting errors here). */
+ if (get_frame_type (get_current_frame ()) == INLINE_FRAME)
+ error (_("Can not force return from an inlined function."));
+ /* Compute the return value. If the computation triggers an error,
+ let it bail. If the return type can't be handled, set
+ RETURN_VALUE to NULL, and QUERY_PREFIX to an informational
+ message. */
if (retval_exp)
{
+ struct expression *retval_expr = parse_expression (retval_exp);
+ struct cleanup *old_chain = make_cleanup (xfree, retval_expr);
struct type *return_type = NULL;
- return_value = parse_and_eval (retval_exp);
+ /* Compute the return value. Should the computation fail, this
+ call throws an error. */
+ return_value = evaluate_expression (retval_expr);
- /* Cast return value to the return type of the function. */
+ /* Cast return value to the return type of the function. Should
+ the cast fail, this call throws an error. */
if (thisfun != NULL)
return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun));
if (return_type == NULL)
- return_type = builtin_type_int;
+ {
+ 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."));
+ return_type = value_type (return_value);
+ }
+ do_cleanups (old_chain);
+ CHECK_TYPEDEF (return_type);
return_value = value_cast (return_type, return_value);
- /* Make sure we have fully evaluated it, since
- it might live in the stack frame we're about to pop. */
- if (VALUE_LAZY (return_value))
+ /* Make sure the value is fully evaluated. It may live in the
+ stack frame we're about to pop. */
+ if (value_lazy (return_value))
value_fetch_lazy (return_value);
- }
- /* If interactive, require confirmation. */
-
- if (from_tty)
- {
- if (thisfun != 0)
+ if (thisfun != NULL)
+ function = read_var_value (thisfun, thisframe);
+
+ rv_conv = RETURN_VALUE_REGISTER_CONVENTION;
+ 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
+ return expression so that, even when the expression result
+ is discarded, side effects such as "return i++" still
+ occur. */
+ return_value = NULL;
+ else if (thisfun != NULL)
{
- if (!query ("Make %s return now? ", SYMBOL_PRINT_NAME (thisfun)))
+ rv_conv = struct_return_convention (gdbarch, function, return_type);
+ if (rv_conv == RETURN_VALUE_STRUCT_CONVENTION
+ || rv_conv == RETURN_VALUE_ABI_RETURNS_ADDRESS)
{
- error ("Not confirmed.");
- /* NOTREACHED */
+ query_prefix = "The location at which to store the "
+ "function's return value is unknown.\n"
+ "If you continue, the return value "
+ "that you specified will be ignored.\n";
+ return_value = NULL;
}
}
- else if (!query ("Make selected stack frame return now? "))
- error ("Not confirmed.");
}
- /* FIXME: cagney/2003-01-18: Rather than pop each frame in turn,
- this code should just go straight to the relevant frame and pop
- that. */
-
- /* Do the real work. Pop until the specified frame is current. We
- use this method because the deprecated_selected_frame is not
- valid after a frame_pop(). The pc comparison makes this work
- even if the selected frame shares its fp with another frame. */
-
- /* FIXME: cagney/32003-03-12: This code should use frame_id_eq().
- Unfortunatly, that function doesn't yet include the PC in any
- frame ID comparison. */
-
- while (selected_frame_addr != get_frame_base (frame = get_current_frame ())
- || selected_frame_pc != get_frame_pc (frame))
- frame_pop (get_current_frame ());
-
- /* Then pop that frame. */
-
- frame_pop (get_current_frame ());
+ /* Does an interactive user really want to do this? Include
+ information, such as how well GDB can handle the return value, in
+ the query message. */
+ if (from_tty)
+ {
+ int confirmed;
- /* Compute the return value (if any) and store in the place
- for return values. */
+ if (thisfun == NULL)
+ confirmed = query (_("%sMake selected stack frame return now? "),
+ query_prefix);
+ else
+ confirmed = query (_("%sMake %s return now? "), query_prefix,
+ SYMBOL_PRINT_NAME (thisfun));
+ if (!confirmed)
+ error (_("Not confirmed"));
+ }
- if (retval_exp)
- set_return_value (return_value);
+ /* Discard the selected frame and all frames inner-to it. */
+ frame_pop (get_selected_frame (NULL));
- /* If we are at the end of a call dummy now, pop the dummy frame too. */
+ /* Store RETURN_VALUE in the just-returned register set. */
+ if (return_value != NULL)
+ {
+ struct type *return_type = value_type (return_value);
+ struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ());
+
+ gdb_assert (rv_conv != RETURN_VALUE_STRUCT_CONVENTION
+ && rv_conv != RETURN_VALUE_ABI_RETURNS_ADDRESS);
+ gdbarch_return_value (gdbarch, function, return_type,
+ get_current_regcache (), NULL /*read*/,
+ value_contents (return_value) /*write*/);
+ }
- /* FIXME: cagney/2003-01-18: This is silly. Instead of popping all
- the frames except the dummy, and then, as an afterthought,
- popping the dummy frame, this code should just pop through to the
- dummy frame. */
-
- if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (),
- get_frame_base (get_current_frame ())))
+ /* If we are at the end of a call dummy now, pop the dummy frame
+ too. */
+ if (get_frame_type (get_current_frame ()) == DUMMY_FRAME)
frame_pop (get_current_frame ());
/* If interactive, print the frame that is now current. */
-
if (from_tty)
frame_command ("0", 1);
else
select_frame_command ("0", 0);
}
-/* Sets the scope to input function name, provided that the
- function is within the current stack frame */
+/* Sets the scope to input function name, provided that the function
+ is within the current stack frame. */
struct function_bounds
{
CORE_ADDR low, high;
};
-static void func_command (char *arg, int from_tty);
static void
func_command (char *arg, int from_tty)
{
- struct frame_info *fp;
+ struct frame_info *frame;
int found = 0;
struct symtabs_and_lines sals;
int i;
int level = 1;
- struct function_bounds *func_bounds = (struct function_bounds *) NULL;
+ struct function_bounds *func_bounds = NULL;
+ struct cleanup *cleanups;
- if (arg != (char *) NULL)
+ if (arg != NULL)
return;
- fp = parse_frame_specification ("0");
- sals = decode_line_spec (arg, 1);
+ frame = parse_frame_specification ("0");
+ 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 == (CORE_ADDR) 0 ||
- find_pc_partial_function (sals.sals[i].pc,
- (char **) 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 = (CORE_ADDR) NULL;
+ func_bounds[i].low = func_bounds[i].high = 0;
}
}
do
{
for (i = 0; (i < sals.nelts && !found); i++)
- found = (get_frame_pc (fp) >= func_bounds[i].low &&
- get_frame_pc (fp) < func_bounds[i].high);
+ found = (get_frame_pc (frame) >= func_bounds[i].low
+ && get_frame_pc (frame) < func_bounds[i].high);
if (!found)
{
level = 1;
- fp = find_relative_frame (fp, &level);
+ frame = find_relative_frame (frame, &level);
}
}
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);
- else if (fp != deprecated_selected_frame)
- select_and_print_frame (fp);
+ printf_filtered (_("'%s' not within current stack frame.\n"), arg);
+ else if (frame != get_selected_frame (NULL))
+ select_and_print_frame (frame);
}
/* Gets the language of the current frame. */
enum language
get_frame_language (void)
{
- register struct symtab *s;
- enum language flang; /* The language of the current frame */
+ struct frame_info *frame = deprecated_safe_get_selected_frame ();
- if (deprecated_selected_frame)
+ if (frame)
{
- s = find_pc_symtab (get_frame_pc (deprecated_selected_frame));
- if (s)
- flang = s->language;
+ volatile struct gdb_exception ex;
+ CORE_ADDR pc = 0;
+ struct symtab *s;
+
+ /* We determine the current frame language by looking up its
+ associated symtab. To retrieve this symtab, we use the frame
+ PC. However we cannot use the frame PC as is, because it
+ usually points to the instruction following the "call", which
+ is sometimes the first instruction of another function. So
+ we rely on get_frame_address_in_block(), it provides us with
+ a PC that is guaranteed to be inside the frame's code
+ block. */
+
+ TRY_CATCH (ex, RETURN_MASK_ERROR)
+ {
+ pc = get_frame_address_in_block (frame);
+ }
+ if (ex.reason < 0)
+ {
+ if (ex.error != NOT_AVAILABLE_ERROR)
+ throw_exception (ex);
+ }
else
- flang = language_unknown;
+ {
+ s = find_pc_symtab (pc);
+ if (s != NULL)
+ return s->language;
+ }
}
- else
- flang = language_unknown;
- return flang;
+ return language_unknown;
}
\f
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+void _initialize_stack (void);
+
void
_initialize_stack (void)
{
-#if 0
- backtrace_limit = 30;
-#endif
-
- add_com ("return", class_stack, return_command,
- "Make selected stack frame return to its caller.\n\
+ add_com ("return", class_stack, return_command, _("\
+Make selected stack frame return to its caller.\n\
Control remains in the debugger, but when you continue\n\
execution will resume in the frame above the one now selected.\n\
-If an argument is given, it is an expression for the value to return.");
-
- add_com ("up", class_stack, up_command,
- "Select and print stack frame that called this one.\n\
-An argument says how many frames up to go.");
- add_com ("up-silently", class_support, up_silently_command,
- "Same as the `up' command, but does not print anything.\n\
-This is useful in command scripts.");
-
- add_com ("down", class_stack, down_command,
- "Select and print stack frame called by this one.\n\
-An argument says how many frames down to go.");
+If an argument is given, it is an expression for the value to return."));
+
+ add_com ("up", class_stack, up_command, _("\
+Select and print stack frame that called this one.\n\
+An argument says how many frames up to go."));
+ add_com ("up-silently", class_support, up_silently_command, _("\
+Same as the `up' command, but does not print anything.\n\
+This is useful in command scripts."));
+
+ add_com ("down", class_stack, down_command, _("\
+Select and print stack frame called by this one.\n\
+An argument says how many frames down to go."));
add_com_alias ("do", "down", class_stack, 1);
add_com_alias ("dow", "down", class_stack, 1);
- add_com ("down-silently", class_support, down_silently_command,
- "Same as the `down' command, but does not print anything.\n\
-This is useful in command scripts.");
+ add_com ("down-silently", class_support, down_silently_command, _("\
+Same as the `down' command, but does not print anything.\n\
+This is useful in command scripts."));
- add_com ("frame", class_stack, frame_command,
- "Select and print a stack frame.\n\
-With no argument, print the selected stack frame. (See also \"info frame\").\n\
+ add_com ("frame", class_stack, frame_command, _("\
+Select and print a stack frame.\nWith no argument, \
+print the selected stack frame. (See also \"info frame\").\n\
An argument specifies the frame to select.\n\
It can be a stack frame number or the address of the frame.\n\
With argument, nothing is printed if input is coming from\n\
-a command file or a user-defined command.");
+a command file or a user-defined command."));
add_com_alias ("f", "frame", class_stack, 1);
if (xdb_commands)
{
add_com ("L", class_stack, current_frame_command,
- "Print the current stack frame.\n");
+ _("Print the current stack frame.\n"));
add_com_alias ("V", "frame", class_stack, 1);
}
- add_com ("select-frame", class_stack, select_frame_command,
- "Select a stack frame without printing anything.\n\
+ add_com ("select-frame", class_stack, select_frame_command, _("\
+Select a stack frame without printing anything.\n\
An argument specifies the frame to select.\n\
-It can be a stack frame number or the address of the frame.\n");
-
- add_com ("backtrace", class_stack, backtrace_command,
- "Print backtrace of all stack frames, or innermost COUNT frames.\n\
-With a negative argument, print outermost -COUNT frames.\n\
-Use of the 'full' qualifier also prints the values of the local variables.\n");
+It can be a stack frame number or the address of the frame.\n"));
+
+ add_com ("backtrace", class_stack, backtrace_command, _("\
+Print backtrace of all stack frames, or innermost COUNT frames.\n\
+With a negative argument, print outermost -COUNT frames.\nUse of the \
+'full' qualifier also prints the values of the local variables.\n\
+Use of the 'no-filters' qualifier prohibits frame filters from executing\n\
+on this backtrace.\n"));
add_com_alias ("bt", "backtrace", class_stack, 0);
if (xdb_commands)
{
add_com_alias ("t", "backtrace", class_stack, 0);
- add_com ("T", class_stack, backtrace_full_command,
- "Print backtrace of all stack frames, or innermost COUNT frames \n\
+ add_com ("T", class_stack, backtrace_full_command, _("\
+Print backtrace of all stack frames, or innermost COUNT frames\n\
and the values of the local variables.\n\
With a negative argument, print outermost -COUNT frames.\n\
-Usage: T <count>\n");
+Usage: T <count>\n"));
}
add_com_alias ("where", "backtrace", class_alias, 0);
add_info ("stack", backtrace_command,
- "Backtrace of the stack, or innermost COUNT frames.");
+ _("Backtrace of the stack, or innermost COUNT frames."));
add_info_alias ("s", "stack", 1);
add_info ("frame", frame_info,
- "All about selected stack frame, or frame at ADDR.");
+ _("All about selected stack frame, or frame at ADDR."));
add_info_alias ("f", "frame", 1);
add_info ("locals", locals_info,
- "Local variables of current stack frame.");
+ _("Local variables of current stack frame."));
add_info ("args", args_info,
- "Argument variables of current stack frame.");
+ _("Argument variables of current stack frame."));
if (xdb_commands)
add_com ("l", class_info, args_plus_locals_info,
- "Argument and local variables of current stack frame.");
+ _("Argument and local variables of current stack frame."));
if (dbx_commands)
- add_com ("func", class_stack, func_command,
- "Select the stack frame that contains <func>.\nUsage: func <name>\n");
-
- add_info ("catch", catch_info,
- "Exceptions that can be caught in the current stack frame.");
-
-#if 0
- add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command,
- "Specify maximum number of frames for \"backtrace\" to print by default.",
- &setlist);
- add_info ("backtrace-limit", backtrace_limit_info,
- "The maximum number of frames for \"backtrace\" to print by default.");
-#endif
+ add_com ("func", class_stack, func_command, _("\
+Select the stack frame that contains <func>.\n\
+Usage: func <name>\n"));
+
+ add_setshow_enum_cmd ("frame-arguments", class_stack,
+ print_frame_arguments_choices, &print_frame_arguments,
+ _("Set printing of non-scalar frame arguments"),
+ _("Show printing of non-scalar frame arguments"),
+ NULL, NULL, NULL, &setprintlist, &showprintlist);
+
+ add_setshow_auto_boolean_cmd ("disassemble-next-line", class_stack,
+ &disassemble_next_line, _("\
+Set whether to disassemble next source line or insn when execution stops."),
+ _("\
+Show whether to disassemble next source line or insn when execution stops."),
+ _("\
+If ON, GDB will display disassembly of the next source line, in addition\n\
+to displaying the source line itself. If the next source line cannot\n\
+be displayed (e.g., source is unavailable or there's no line info), GDB\n\
+will display disassembly of next instruction instead of showing the\n\
+source line.\n\
+If AUTO, display disassembly of next instruction only if the source line\n\
+cannot be displayed.\n\
+If OFF (which is the default), never display the disassembly of the next\n\
+source line."),
+ NULL,
+ 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