/* Print and select stack frames for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
+ This file is part of GDB.
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
+ 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
+ (at your option) any later version.
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-#include <stdio.h>
+ 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. */
+#include <ctype.h>
#include "defs.h"
-#include "param.h"
+#include "gdb_string.h"
+#include "value.h"
#include "symtab.h"
+#include "gdbtypes.h"
+#include "expression.h"
+#include "language.h"
#include "frame.h"
-#include "inferior.h"
+#include "gdbcmd.h"
#include "gdbcore.h"
+#include "target.h"
+#include "breakpoint.h"
+#include "demangle.h"
+#include "inferior.h"
+#include "annotate.h"
+#ifdef UI_OUT
+#include "ui-out.h"
+#endif
+
+/* Prototypes for exported functions. */
+
+void args_info (char *, int);
+
+void locals_info (char *, int);
+
+void (*selected_frame_level_changed_hook) (int);
+
+void _initialize_stack (void);
+
+/* Prototypes for local functions. */
+
+static void return_command (char *, int);
+
+static void down_command (char *, int);
+
+static void down_silently_base (char *);
+
+static void down_silently_command (char *, int);
+
+static void up_command (char *, int);
+
+static void up_silently_base (char *);
+
+static void up_silently_command (char *, int);
+
+void frame_command (char *, int);
+
+static void current_frame_command (char *, int);
+
+static void select_frame_command (char *, int);
+
+static void print_frame_arg_vars (struct frame_info *, struct ui_file *);
+
+static void catch_info (char *, int);
+
+static void args_plus_locals_info (char *, int);
+
+static void print_frame_label_vars (struct frame_info *, int,
+ struct ui_file *);
+
+static void print_frame_local_vars (struct frame_info *, int,
+ struct ui_file *);
+
+static int print_block_frame_labels (struct block *, int *,
+ struct ui_file *);
+
+static int print_block_frame_locals (struct block *,
+ struct frame_info *,
+ int,
+ struct ui_file *);
+
+static void print_frame (struct frame_info *fi,
+ int level,
+ int source,
+ int args,
+ struct symtab_and_line sal);
+
+static void print_frame_info_base (struct frame_info *, int, int, int);
+
+static void print_stack_frame_base (struct frame_info *, int, int);
+
+static void backtrace_command (char *, int);
+
+struct frame_info *parse_frame_specification (char *);
+
+static void frame_info (char *, int);
+extern int addressprint; /* Print addresses, or stay symbolic only? */
+extern int info_verbose; /* Verbosity of symbol reading msgs */
+extern int lines_to_list; /* # of lines "list" command shows by default */
-/* Thie "selected" stack frame is used by default for local and arg access.
+/* The "selected" stack frame is used by default for local and arg access.
May be zero, for no selected frame. */
-FRAME selected_frame;
+struct frame_info *selected_frame;
/* Level of the selected frame:
0 for innermost, 1 for its caller, ...
int selected_frame_level;
-/* Error message when selected_frame is zero when it's needed */
-char no_sel_frame[] = "There is no current stack frame.";
+/* 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. */
-/* Nonzero means print the full filename and linenumber
- when a frame is printed, and do so in a format programs can parse. */
+int annotation_level = 0;
+\f
-int frame_file_full_name = 0;
+struct print_stack_frame_args
+ {
+ struct frame_info *fi;
+ int level;
+ int source;
+ int args;
+ };
-static void select_calling_frame ();
+static int print_stack_frame_base_stub (char *);
-void print_frame_info ();
-\f
-/* Print a stack frame briefly. FRAME should be the frame address
+/* Show and print the frame arguments.
+ Pass the args the way catch_errors wants them. */
+static int show_and_print_stack_frame_stub (void *args);
+static int
+show_and_print_stack_frame_stub (void *args)
+{
+ struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
+
+ print_frame_info (p->fi, p->level, p->source, p->args);
+
+ return 0;
+}
+
+/* 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)
+{
+ struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
+
+ print_frame_info_base (p->fi, p->level, p->source, p->args);
+ return 0;
+}
+
+/* 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). */
+
+/* Pass the args the way catch_errors wants them. */
+static int
+print_stack_frame_base_stub (char *args)
+{
+ struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
+
+ print_frame_info_base (p->fi, p->level, p->source, p->args);
+ return 0;
+}
+
+/* print the frame arguments to the terminal.
+ Pass the args the way catch_errors wants them. */
+static int print_only_stack_frame_stub (void *);
+static int
+print_only_stack_frame_stub (void *args)
+{
+ struct print_stack_frame_args *p = (struct print_stack_frame_args *) args;
+
+ print_frame_info_base (p->fi, p->level, p->source, p->args);
+ return 0;
+}
+
+/* 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 SOURCE is 1, print the source line as well.
If SOURCE is -1, print ONLY the source line. */
-/* FIXME, the argument "frame" is always "selected_frame". This is why
- we can say "No selected frame" if it == 0. Probably shouldn't be an
- argument anymore... */
-
static void
-print_stack_frame (frame, level, source)
- FRAME frame;
- int level;
- int source;
+print_stack_frame_base (struct frame_info *fi, int level, int source)
{
- struct frame_info *fi;
+ struct print_stack_frame_args args;
- if (frame == 0)
- error (no_sel_frame);
- fi = get_frame_info (frame);
+ args.fi = fi;
+ args.level = level;
+ args.source = source;
+ args.args = 1;
- print_frame_info (fi, level, source, 1);
+ catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL);
}
+/* Show and 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.
+
+ If SOURCE is 1, print the source line as well.
+ If SOURCE is -1, print ONLY the source line. */
+
void
-print_frame_info (fi, level, source, args)
- struct frame_info *fi;
- register int level;
- int source;
- int args;
+show_and_print_stack_frame (struct frame_info *fi, int level, int source)
+{
+ struct print_stack_frame_args args;
+
+ args.fi = fi;
+ args.level = level;
+ args.source = source;
+ args.args = 1;
+
+ catch_errors (show_and_print_stack_frame_stub, &args, "", RETURN_MASK_ALL);
+}
+
+
+/* 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.
+
+ If SOURCE is 1, print the source line as well.
+ If SOURCE is -1, print ONLY the source line. */
+
+void
+print_stack_frame (struct frame_info *fi, int level, int source)
+{
+ struct print_stack_frame_args args;
+
+ args.fi = fi;
+ args.level = level;
+ args.source = source;
+ args.args = 1;
+
+ catch_errors (print_stack_frame_stub, (char *) &args, "", RETURN_MASK_ALL);
+}
+
+/* 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.
+
+ If SOURCE is 1, print the source line as well.
+ If SOURCE is -1, print ONLY the source line. */
+
+void
+print_only_stack_frame (struct frame_info *fi, int level, int source)
+{
+ struct print_stack_frame_args args;
+
+ args.fi = fi;
+ args.level = level;
+ args.source = source;
+ args.args = 1;
+
+ catch_errors (print_only_stack_frame_stub, &args, "", RETURN_MASK_ALL);
+}
+
+struct print_args_args
{
- struct symtab_and_line sal;
struct symbol *func;
- register char *funname = 0;
+ struct frame_info *fi;
+ struct ui_file *stream;
+};
+
+static int print_args_stub (PTR);
+
+/* Pass the args the way catch_errors wants them. */
+
+static int
+print_args_stub (PTR args)
+{
int numargs;
+ struct print_args_args *p = (struct print_args_args *) args;
- sal = find_pc_line (fi->pc, fi->next_frame);
- func = find_pc_function (fi->pc);
- if (func)
- funname = SYMBOL_NAME (func);
- else
+ numargs = FRAME_NUM_ARGS (p->fi);
+ print_frame_args (p->func, p->fi, numargs, p->stream);
+ return 0;
+}
+
+/* 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. */
+
+static void
+print_frame_info_base (struct frame_info *fi, int level, int source, int args)
+{
+ struct symtab_and_line sal;
+ int source_print;
+ int location_print;
+
+#if 0
+ char buf[MAX_REGISTER_RAW_SIZE];
+ CORE_ADDR sp;
+
+ /* On the 68k, this spends too much time in m68k_find_saved_regs. */
+
+ /* Get the value of SP_REGNUM relative to the frame. */
+ get_saved_register (buf, (int *) NULL, (CORE_ADDR *) NULL,
+ FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *) NULL);
+ sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM));
+
+ /* This is not a perfect test, because if a function alloca's some
+ memory, puts some code there, and then jumps into it, then the test
+ will succeed even though there is no call dummy. Probably best is
+ to check for a bp_call_dummy breakpoint. */
+ if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame))
+#else
+ if (frame_in_dummy (fi))
+#endif
{
- register int misc_index = find_pc_misc_function (fi->pc);
- if (misc_index >= 0)
- funname = misc_function_vector[misc_index].name;
- }
+ annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
- if (source >= 0 || !sal.symtab)
+ /* Do this regardless of SOURCE because we don't have any source
+ to list for this frame. */
+ if (level >= 0)
+ printf_filtered ("#%-2d ", level);
+ annotate_function_call ();
+ printf_filtered ("<function called from gdb>\n");
+ annotate_frame_end ();
+ return;
+ }
+ if (fi->signal_handler_caller)
{
+ annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
+
+ /* Do this regardless of SOURCE because we don't have any source
+ to list for this frame. */
if (level >= 0)
- printf ("#%-2d ", level);
- if (fi->pc != sal.pc || !sal.symtab)
- printf ("0x%x in ", fi->pc);
- printf ("%s (", funname ? funname : "??");
- if (args)
- {
- FRAME_NUM_ARGS (numargs, fi);
- print_frame_args (func, fi, numargs, stdout);
- }
- printf (")");
- if (sal.symtab)
- printf (" (%s line %d)", sal.symtab->filename, sal.line);
- printf ("\n");
+ printf_filtered ("#%-2d ", level);
+ annotate_signal_handler_caller ();
+ printf_filtered ("<signal handler called>\n");
+ annotate_frame_end ();
+ return;
}
- if (source != 0 && sal.symtab)
+ /* 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 signal_handler_caller 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. */
+ sal =
+ find_pc_line (fi->pc,
+ fi->next != NULL
+ && !fi->next->signal_handler_caller
+ && !frame_in_dummy (fi->next));
+
+ location_print = (source == LOCATION
+ || source == LOC_AND_ADDRESS
+ || source == SRC_AND_LOC);
+
+ if (location_print || !sal.symtab)
+ print_frame (fi, level, source, args, sal);
+
+ source_print = (source == SRC_LINE || source == SRC_AND_LOC);
+
+ if (source_print && sal.symtab)
{
int done = 0;
- int mid_statement = source < 0 && fi->pc != sal.pc;
- if (frame_file_full_name)
- done = identify_source_line (sal.symtab, sal.line, mid_statement);
+ int mid_statement = (source == SRC_LINE) && (fi->pc != sal.pc);
+
+ if (annotation_level)
+ done = identify_source_line (sal.symtab, sal.line, mid_statement,
+ fi->pc);
if (!done)
{
- if (mid_statement)
- printf ("0x%x\t", fi->pc);
- print_source_lines (sal.symtab, sal.line, sal.line + 1, 1);
+ if (addressprint && mid_statement)
+ {
+#ifdef UI_OUT
+ ui_out_field_core_addr (uiout, "addr", fi->pc);
+ ui_out_text (uiout, "\t");
+#else
+ print_address_numeric (fi->pc, 1, gdb_stdout);
+ printf_filtered ("\t");
+#endif
+ }
+ if (print_frame_info_listing_hook)
+ print_frame_info_listing_hook (sal.symtab, sal.line, sal.line + 1, 0);
+ else
+ print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
}
- current_source_line = max (sal.line - 5, 1);
+ current_source_line = max (sal.line - lines_to_list / 2, 1);
}
+
if (source != 0)
set_default_breakpoint (1, fi->pc, sal.symtab, sal.line);
- fflush (stdout);
+ annotate_frame_end ();
+
+ gdb_flush (gdb_stdout);
}
-/* Call here to print info on selected frame, after a trap. */
+static void
+print_frame (struct frame_info *fi,
+ int level,
+ int source,
+ int args,
+ struct symtab_and_line sal)
+{
+ struct symbol *func;
+ register char *funname = 0;
+ enum language funlang = language_unknown;
+#ifdef UI_OUT
+ 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);
+#endif /* UI_OUT */
+
+ func = find_pc_function (fi->pc);
+ if (func)
+ {
+ /* In certain pathological cases, the symtabs give the wrong
+ function (when we are in the first function in a file which
+ is compiled without debugging symbols, the previous function
+ is compiled with debugging symbols, and the "foo.o" symbol
+ that is supposed to tell us where the file with debugging symbols
+ ends has been truncated by ar because it is longer than 15
+ characters). This also occurs if the user uses asm() to create
+ a function but not stabs for it (in a file compiled -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 (fi->pc);
+ if (msymbol != NULL
+ && (SYMBOL_VALUE_ADDRESS (msymbol)
+ > 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 = SYMBOL_NAME (msymbol);
+ funlang = SYMBOL_LANGUAGE (msymbol);
+ }
+ else
+ {
+ /* I'd like to use SYMBOL_SOURCE_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 = SYMBOL_NAME (func);
+ funlang = SYMBOL_LANGUAGE (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_SOURCE_NAME (func);
+ }
+ }
+ }
+ else
+ {
+ struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
+ if (msymbol != NULL)
+ {
+ funname = SYMBOL_NAME (msymbol);
+ funlang = SYMBOL_LANGUAGE (msymbol);
+ }
+ }
+
+ annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
+
+#ifdef UI_OUT
+ list_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "frame");
+#endif
+ if (level >= 0)
+ {
+#ifdef UI_OUT
+ ui_out_text (uiout, "#");
+ ui_out_field_fmt (uiout, "level", "%-2d", level);
+ ui_out_spaces (uiout, 1);
+#else
+ printf_filtered ("#%-2d ", level);
+#endif
+ }
+ if (addressprint)
+ if (fi->pc != sal.pc || !sal.symtab || source == LOC_AND_ADDRESS)
+ {
+ annotate_frame_address ();
+#ifdef UI_OUT
+ ui_out_field_core_addr (uiout, "addr", fi->pc);
+ annotate_frame_address_end ();
+ ui_out_text (uiout, " in ");
+#else
+ print_address_numeric (fi->pc, 1, gdb_stdout);
+ annotate_frame_address_end ();
+ printf_filtered (" in ");
+#endif
+ }
+ annotate_frame_function_name ();
+#ifdef UI_OUT
+ fprintf_symbol_filtered (stb->stream, funname ? funname : "??", funlang,
+ DMGL_ANSI);
+ ui_out_field_stream (uiout, "func", stb);
+ ui_out_wrap_hint (uiout, " ");
+#else
+ fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang,
+ DMGL_ANSI);
+ wrap_here (" ");
+#endif
+ annotate_frame_args ();
+
+#ifdef UI_OUT
+ ui_out_text (uiout, " (");
+#else
+ fputs_filtered (" (", gdb_stdout);
+#endif
+ if (args)
+ {
+ struct print_args_args args;
+#ifdef UI_OUT
+ struct cleanup *args_list_chain;
+#endif
+ args.fi = fi;
+ args.func = func;
+ args.stream = gdb_stdout;
+#ifdef UI_OUT
+ 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. */
+ /* Invoke ui_out_tuple_end. */
+ do_cleanups (args_list_chain);
+#else
+ catch_errors (print_args_stub, &args, "", RETURN_MASK_ALL);
+#endif
+ QUIT;
+ }
+#ifdef UI_OUT
+ ui_out_text (uiout, ")");
+#else
+ printf_filtered (")");
+#endif
+ if (sal.symtab && sal.symtab->filename)
+ {
+ annotate_frame_source_begin ();
+#ifdef UI_OUT
+ ui_out_wrap_hint (uiout, " ");
+ ui_out_text (uiout, " at ");
+ annotate_frame_source_file ();
+ ui_out_field_string (uiout, "file", sal.symtab->filename);
+ annotate_frame_source_file_end ();
+ ui_out_text (uiout, ":");
+ annotate_frame_source_line ();
+ ui_out_field_int (uiout, "line", sal.line);
+#else
+ wrap_here (" ");
+ printf_filtered (" at ");
+ annotate_frame_source_file ();
+ printf_filtered ("%s", sal.symtab->filename);
+ annotate_frame_source_file_end ();
+ printf_filtered (":");
+ annotate_frame_source_line ();
+ printf_filtered ("%d", sal.line);
+#endif
+ annotate_frame_source_end ();
+ }
+
+#ifdef PC_SOLIB
+ if (!funname || (!sal.symtab || !sal.symtab->filename))
+ {
+ char *lib = PC_SOLIB (fi->pc);
+ if (lib)
+ {
+ annotate_frame_where ();
+#ifdef UI_OUT
+ ui_out_wrap_hint (uiout, " ");
+ ui_out_text (uiout, " from ");
+ ui_out_field_string (uiout, "from", lib);
+#else
+ wrap_here (" ");
+ printf_filtered (" from %s", lib);
+#endif
+ }
+ }
+#endif /* PC_SOLIB */
+
+#ifdef UI_OUT
+ /* do_cleanups will call ui_out_tuple_end() for us. */
+ do_cleanups (list_chain);
+ ui_out_text (uiout, "\n");
+ do_cleanups (old_chain);
+#else
+ printf_filtered ("\n");
+#endif
+}
+\f
+
+/* Show or print the frame info. If this is the tui, it will be shown in
+ the source display */
void
-print_sel_frame (just_source)
- int just_source;
+print_frame_info (struct frame_info *fi, register int level, int source,
+ int args)
{
- print_stack_frame (selected_frame, -1, just_source ? -1 : 1);
+ print_frame_info_base (fi, level, source, args);
}
-/* Print info on the selected frame, including level number
- but not source. */
-
+/* Show the frame info. If this is the tui, it will be shown in
+ the source display otherwise, nothing is done */
void
-print_selected_frame ()
+show_stack_frame (struct frame_info *fi)
{
- print_stack_frame (selected_frame, selected_frame_level, 0);
}
+\f
-void flush_cached_frames (); /* FIXME, never called! */
-
-#ifdef FRAME_SPECIFICATION_DYADIC
-extern FRAME setup_arbitrary_frame ();
-#endif
+/* 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.
- */
-static FRAME
-parse_frame_specification (frame_exp)
- char *frame_exp;
+struct frame_info *
+parse_frame_specification (char *frame_exp)
{
int numargs = 0;
- int arg1, arg2;
-
+#define MAXARGS 4
+ CORE_ADDR args[MAXARGS];
+ int level;
+
if (frame_exp)
{
char *addr_string, *p;
struct cleanup *tmp_cleanup;
- struct frame_info *fci;
- while (*frame_exp == ' ') frame_exp++;
- for (p = frame_exp; *p && *p != ' '; p++)
- ;
+ while (*frame_exp == ' ')
+ frame_exp++;
- if (*frame_exp)
+ while (*frame_exp)
{
- numargs = 1;
- addr_string = savestring(frame_exp, p - frame_exp);
+ 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);
{
- tmp_cleanup = make_cleanup (free, addr_string);
- arg1 = parse_and_eval_address (addr_string);
+ value_ptr vp;
+
+ tmp_cleanup = make_cleanup (xfree, addr_string);
+
+ /* NOTE: we call parse_and_eval and then both
+ value_as_long and value_as_pointer 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_pointer (vp);
do_cleanups (tmp_cleanup);
}
- while (*p == ' ') p++;
-
- if (*p)
- {
- numargs = 2;
- arg2 = parse_and_eval_address (p);
- }
+ /* Skip spaces, move to possible next arg. */
+ while (*p == ' ')
+ p++;
+ frame_exp = p;
}
}
switch (numargs)
{
case 0:
- if (selected_frame == 0)
- error (no_sel_frame);
+ if (selected_frame == NULL)
+ error ("No selected frame.");
return selected_frame;
/* NOTREACHED */
case 1:
{
- int level = arg1;
- FRAME fid = find_relative_frame (get_current_frame (), &level);
- FRAME tfid;
+ 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 %d", args[0]);
+#endif
+
/* If (s)he specifies the frame with an address, he deserves what
(s)he gets. Still, give the highest one that matches. */
for (fid = get_current_frame ();
- fid && FRAME_FP (fid) != arg1;
+ fid && fid->frame != args[0];
fid = get_prev_frame (fid))
;
if (fid)
while ((tfid = get_prev_frame (fid)) &&
- (FRAME_FP (tfid) == arg1))
+ (tfid->frame == args[0]))
fid = tfid;
-
-#ifdef FRAME_SPECIFICATION_DYADIC
- if (!fid)
- error ("Incorrect number of args in frame specification");
- return fid;
-#else
- return create_new_frame (arg1, 0);
-#endif
+ /* We couldn't identify the frame as an existing frame, but
+ perhaps we can create one with a single argument. */
}
- /* NOTREACHED */
- case 2:
- /* Must be addresses */
-#ifndef FRAME_SPECIFICATION_DYADIC
- error ("Incorrect number of args in frame specification");
+
+ default:
+#ifdef SETUP_ARBITRARY_FRAME
+ return SETUP_ARBITRARY_FRAME (numargs, args);
#else
- return setup_arbitrary_frame (arg1, arg2);
+ /* 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 */
}
- fatal ("Internal: Error in parsing in parse_frame_specification");
/* NOTREACHED */
}
+/* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except
+ that if it is unsure about the answer, it returns 0
+ instead of guessing (this happens on the VAX and i960, for example).
+
+ On most machines, we never have to guess about the args address,
+ so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */
+#if !defined (FRAME_ARGS_ADDRESS_CORRECT)
+#define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS
+#endif
+
/* Print verbosely the selected frame or the frame at address ADDR.
This means absolutely all information in the frame is printed. */
static void
-frame_info (addr_exp)
- char *addr_exp;
+frame_info (char *addr_exp, int from_tty)
{
- FRAME frame;
struct frame_info *fi;
- struct frame_saved_regs fsr;
struct symtab_and_line sal;
struct symbol *func;
- FRAME calling_frame;
- int i, count;
+ struct symtab *s;
+ struct frame_info *calling_frame_info;
+ int i, count, numregs;
char *funname = 0;
- int numargs;
+ enum language funlang = language_unknown;
+
+ if (!target_has_stack)
+ error ("No stack.");
- frame = parse_frame_specification (addr_exp);
+ fi = parse_frame_specification (addr_exp);
+ if (fi == NULL)
+ error ("Invalid frame specified.");
- fi = get_frame_info (frame);
- get_frame_saved_regs (fi, &fsr);
- sal = find_pc_line (fi->pc, fi->next_frame);
- func = get_frame_function (frame);
+ sal = find_pc_line (fi->pc,
+ fi->next != NULL
+ && !fi->next->signal_handler_caller
+ && !frame_in_dummy (fi->next));
+ func = get_frame_function (fi);
+ s = find_pc_symtab (fi->pc);
if (func)
- funname = SYMBOL_NAME (func);
+ {
+ /* I'd like to use SYMBOL_SOURCE_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 = SYMBOL_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_SOURCE_NAME (func);
+ }
+ }
else
{
- register int misc_index = find_pc_misc_function (fi->pc);
- if (misc_index >= 0)
- funname = misc_function_vector[misc_index].name;
+ register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc);
+ if (msymbol != NULL)
+ {
+ funname = SYMBOL_NAME (msymbol);
+ funlang = SYMBOL_LANGUAGE (msymbol);
+ }
}
- calling_frame = get_prev_frame (frame);
+ calling_frame_info = get_prev_frame (fi);
if (!addr_exp && selected_frame_level >= 0)
- printf ("Stack level %d, frame at 0x%x:\n pc = 0x%x",
- selected_frame_level, FRAME_FP(frame), fi->pc);
+ {
+ printf_filtered ("Stack level %d, frame at ", selected_frame_level);
+ print_address_numeric (fi->frame, 1, gdb_stdout);
+ printf_filtered (":\n");
+ }
else
- printf ("Stack frame at 0x%x:\n pc = 0x%x",
- FRAME_FP(frame), fi->pc);
+ {
+ printf_filtered ("Stack frame at ");
+ print_address_numeric (fi->frame, 1, gdb_stdout);
+ printf_filtered (":\n");
+ }
+ printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM));
+ print_address_numeric (fi->pc, 1, gdb_stdout);
+ wrap_here (" ");
if (funname)
- printf (" in %s", funname);
+ {
+ printf_filtered (" in ");
+ fprintf_symbol_filtered (gdb_stdout, funname, funlang,
+ DMGL_ANSI | DMGL_PARAMS);
+ }
+ wrap_here (" ");
if (sal.symtab)
- printf (" (%s line %d)", sal.symtab->filename, sal.line);
- printf ("; saved pc 0x%x\n", FRAME_SAVED_PC (frame));
- if (calling_frame)
- printf (" called by frame at 0x%x", FRAME_FP (calling_frame));
- if (fi->next_frame && calling_frame)
- printf (",");
- if (fi->next_frame)
- printf (" caller of frame at 0x%x", fi->next_frame);
- if (fi->next_frame || calling_frame)
- printf ("\n");
- printf (" Arglist at 0x%x,", FRAME_ARGS_ADDRESS (fi));
- FRAME_NUM_ARGS (i, fi);
- if (i < 0)
- printf (" args: ");
- else if (i == 0)
- printf (" no args.");
- else if (i == 1)
- printf (" 1 arg: ");
- else
- printf (" %d args: ", i);
-
- FRAME_NUM_ARGS (numargs, fi);
- print_frame_args (func, fi, numargs, stdout);
- printf ("\n");
- count = 0;
- for (i = 0; i < NUM_REGS; i++)
- if (fsr.regs[i])
+ printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line);
+ puts_filtered ("; ");
+ wrap_here (" ");
+ printf_filtered ("saved %s ", REGISTER_NAME (PC_REGNUM));
+ print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout);
+ printf_filtered ("\n");
+
+ {
+ int frameless;
+ frameless = FRAMELESS_FUNCTION_INVOCATION (fi);
+ if (frameless)
+ printf_filtered (" (FRAMELESS),");
+ }
+
+ if (calling_frame_info)
+ {
+ printf_filtered (" called by frame at ");
+ print_address_numeric (calling_frame_info->frame, 1, gdb_stdout);
+ }
+ if (fi->next && calling_frame_info)
+ puts_filtered (",");
+ wrap_here (" ");
+ if (fi->next)
+ {
+ printf_filtered (" caller of frame at ");
+ print_address_numeric (fi->next->frame, 1, gdb_stdout);
+ }
+ if (fi->next || 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 = FRAME_ARGS_ADDRESS_CORRECT (fi);
+ /* Number of args for this frame, or -1 if unknown. */
+ int numargs;
+
+ if (arg_list == 0)
+ printf_filtered (" Arglist at unknown address.\n");
+ else
{
- if (count % 4 != 0)
- printf (", ");
+ printf_filtered (" Arglist at ");
+ print_address_numeric (arg_list, 1, 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: ");
else
+ printf_filtered (" %d args: ", numargs);
+ print_frame_args (func, fi, numargs, gdb_stdout);
+ puts_filtered ("\n");
+ }
+ }
+ {
+ /* Address of the local variables for this frame, or 0. */
+ CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi);
+
+ if (arg_list == 0)
+ printf_filtered (" Locals at unknown address,");
+ else
+ {
+ printf_filtered (" Locals at ");
+ print_address_numeric (arg_list, 1, gdb_stdout);
+ printf_filtered (",");
+ }
+ }
+
+ FRAME_INIT_SAVED_REGS (fi);
+ if (fi->saved_regs != NULL)
+ {
+ /* The sp is special; what's returned isn't the save address, but
+ actually the value of the previous frame's sp. */
+ printf_filtered (" Previous frame's sp is ");
+ print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout);
+ printf_filtered ("\n");
+ count = 0;
+ numregs = NUM_REGS + NUM_PSEUDO_REGS;
+ for (i = 0; i < numregs; i++)
+ if (fi->saved_regs[i] && i != SP_REGNUM)
{
if (count == 0)
- printf (" Saved registers:");
- printf ("\n ");
+ puts_filtered (" Saved registers:\n ");
+ else
+ puts_filtered (",");
+ wrap_here (" ");
+ printf_filtered (" %s at ", REGISTER_NAME (i));
+ print_address_numeric (fi->saved_regs[i], 1, gdb_stdout);
+ count++;
}
- printf ("%s at 0x%x", reg_names[i], fsr.regs[i]);
- count++;
- }
- if (count)
- printf ("\n");
+ if (count)
+ puts_filtered ("\n");
+ }
+ else
+ {
+ /* We could get some information about saved registers by
+ calling get_saved_register on each register. Which info goes
+ with which frame is necessarily lost, however, and I suspect
+ that the users don't care whether they get the info. */
+ puts_filtered ("\n");
+ }
}
#if 0
static int backtrace_limit;
static void
-set_backtrace_limit_command (count_exp, from_tty)
- char *count_exp;
- int from_tty;
+set_backtrace_limit_command (char *count_exp, int from_tty)
{
- int count = parse_and_eval_address (count_exp);
+ int count = parse_and_eval_long (count_exp);
if (count < 0)
error ("Negative argument not meaningful as backtrace limit.");
}
static void
-backtrace_limit_info (arg, from_tty)
- char *arg;
- int from_tty;
+backtrace_limit_info (char *arg, int from_tty)
{
if (arg)
error ("\"Info backtrace-limit\" takes no arguments.");
- printf ("Backtrace limit: %d.\n", backtrace_limit);
+ printf_unfiltered ("Backtrace limit: %d.\n", backtrace_limit);
}
#endif
/* Print briefly all stack frames or just the innermost COUNT frames. */
+static void backtrace_command_1 (char *count_exp, int show_locals,
+ int from_tty);
static void
-backtrace_command (count_exp)
- char *count_exp;
+backtrace_command_1 (char *count_exp, int show_locals, int from_tty)
{
struct frame_info *fi;
register int count;
- register FRAME frame;
register int i;
- register FRAME trailing;
+ register struct frame_info *trailing;
register int trailing_level;
- if (have_inferior_p () == 0 && corefile == 0)
- error ("There is no running program or core file.");
+ if (!target_has_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
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)
{
- count = parse_and_eval_address (count_exp);
+ count = parse_and_eval_long (count_exp);
if (count < 0)
{
- FRAME current;
+ struct frame_info *current;
count = -count;
current = trailing;
while (current && count--)
- current = get_prev_frame (current);
-
+ {
+ QUIT;
+ current = get_prev_frame (current);
+ }
+
/* Will stop when CURRENT reaches the top of the stack. TRAILING
will be COUNT below it. */
while (current)
{
+ QUIT;
trailing = get_prev_frame (trailing);
current = get_prev_frame (current);
trailing_level++;
}
-
+
count = -1;
}
}
else
-#if 0
- count = backtrace_limit;
-#else
count = -1;
-#endif
- for (i = 0, frame = trailing;
- frame && count--;
- i++, frame = get_prev_frame (frame))
+ 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
+ backtrace this may have to be an option. */
+ i = count;
+ for (fi = trailing;
+ fi != NULL && i--;
+ fi = get_prev_frame (fi))
+ {
+ QUIT;
+ ps = find_pc_psymtab (fi->pc);
+ if (ps)
+ PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */
+ }
+ }
+
+ for (i = 0, fi = trailing;
+ fi && count--;
+ i++, fi = get_prev_frame (fi))
{
QUIT;
- fi = get_frame_info (frame);
- print_frame_info (fi, trailing_level + i, 0, 1);
+
+ /* 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_base (fi, trailing_level + i, 0, 1);
+ if (show_locals)
+ print_frame_local_vars (fi, 1, gdb_stdout);
}
/* If we've stopped before the end, mention that. */
- if (frame)
- printf ("(More stack frames follow...)\n");
+ if (fi && from_tty)
+ printf_filtered ("(More stack frames follow...)\n");
}
-\f
-/* Print the local variables of a block B active in FRAME. */
static void
-print_block_frame_locals (b, frame, stream)
- struct block *b;
- register FRAME frame;
- register FILE *stream;
+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;
+
+ if (arg != (char *) NULL)
+ {
+ int i;
+
+ argv = buildargv (arg);
+ old_chain = make_cleanup_freeargv (argv);
+ argc = 0;
+ for (i = 0; (argv[i] != (char *) NULL); i++)
+ {
+ unsigned int 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;
+ else
+ {
+ argc++;
+ totArgLen += strlen (argv[i]);
+ }
+ }
+ totArgLen += argc;
+ if (argIndicatingFullTrace >= 0)
+ {
+ if (totArgLen > 0)
+ {
+ argPtr = (char *) xmalloc (totArgLen + 1);
+ if (!argPtr)
+ nomem (0);
+ else
+ {
+ memset (argPtr, 0, totArgLen + 1);
+ for (i = 0; (i < (argc + 1)); i++)
+ {
+ if (i != argIndicatingFullTrace)
+ {
+ strcat (argPtr, argv[i]);
+ strcat (argPtr, " ");
+ }
+ }
+ }
+ }
+ else
+ argPtr = (char *) NULL;
+ }
+ }
+
+ backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty);
+
+ if (argIndicatingFullTrace >= 0 && totArgLen > 0)
+ xfree (argPtr);
+
+ if (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);
+}
+\f
+
+/* Print the local variables of a block B active in FRAME.
+ Return 1 if any variables were printed; 0 otherwise. */
+
+static int
+print_block_frame_locals (struct block *b, register struct frame_info *fi,
+ int num_tabs, register struct ui_file *stream)
+{
+ int nsyms;
+ register int i, j;
+ register struct symbol *sym;
+ register int values_printed = 0;
+
+ nsyms = BLOCK_NSYMS (b);
+
+ for (i = 0; i < nsyms; i++)
+ {
+ sym = BLOCK_SYM (b, i);
+ switch (SYMBOL_CLASS (sym))
+ {
+ case LOC_LOCAL:
+ case LOC_REGISTER:
+ case LOC_STATIC:
+ case LOC_BASEREG:
+ values_printed = 1;
+ for (j = 0; j < num_tabs; j++)
+ fputs_filtered ("\t", stream);
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
+ fputs_filtered (" = ", stream);
+ print_variable_value (sym, fi, stream);
+ fprintf_filtered (stream, "\n");
+ break;
+
+ default:
+ /* Ignore symbols which are not locals. */
+ break;
+ }
+ }
+ return values_printed;
+}
+
+/* Same, but print labels. */
+
+static int
+print_block_frame_labels (struct block *b, int *have_default,
+ register struct ui_file *stream)
{
int nsyms;
register int i;
register struct symbol *sym;
+ register int values_printed = 0;
nsyms = BLOCK_NSYMS (b);
for (i = 0; i < nsyms; i++)
{
sym = BLOCK_SYM (b, i);
- if (SYMBOL_CLASS (sym) == LOC_LOCAL
- || SYMBOL_CLASS (sym) == LOC_REGISTER
- || SYMBOL_CLASS (sym) == LOC_STATIC)
+ if (STREQ (SYMBOL_NAME (sym), "default"))
{
- fprintf (stream, "%s = ", SYMBOL_NAME (sym));
- print_variable_value (sym, frame, stream);
- fprintf (stream, "\n");
- fflush (stream);
+ if (*have_default)
+ continue;
+ *have_default = 1;
+ }
+ if (SYMBOL_CLASS (sym) == LOC_LABEL)
+ {
+ struct symtab_and_line sal;
+ sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
+ values_printed = 1;
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
+ if (addressprint)
+ {
+ fprintf_filtered (stream, " ");
+ print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream);
+ }
+ fprintf_filtered (stream, " in file %s, line %d\n",
+ sal.symtab->filename, sal.line);
}
}
+ return values_printed;
}
/* Print on STREAM all the local variables in frame FRAME,
or 0 if nothing was printed because we have no info
on the function running in FRAME. */
-static int
-print_frame_local_vars (frame, stream)
- register FRAME frame;
- register FILE *stream;
+static void
+print_frame_local_vars (register struct frame_info *fi, register int num_tabs,
+ register struct ui_file *stream)
{
- register struct block *block;
+ register struct block *block = get_frame_block (fi);
+ register int values_printed = 0;
- block = get_frame_block (frame);
if (block == 0)
- return 0;
+ {
+ fprintf_filtered (stream, "No symbol table info available.\n");
+ return;
+ }
+
while (block != 0)
{
- print_block_frame_locals (block, frame, stream);
+ 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. */
+ Don't continue to its superblock, the block of
+ per-file symbols. */
if (BLOCK_FUNCTION (block))
break;
block = BLOCK_SUPERBLOCK (block);
}
- return 1;
+
+ if (!values_printed)
+ {
+ fprintf_filtered (stream, "No locals.\n");
+ }
}
+/* Same, but print labels. */
+
static void
-locals_info ()
+print_frame_label_vars (register struct frame_info *fi, int this_level_only,
+ register struct ui_file *stream)
{
- if (selected_frame == 0)
- error(no_sel_frame);
- print_frame_local_vars (selected_frame, stdout);
+ register struct blockvector *bl;
+ register struct block *block = get_frame_block (fi);
+ register int values_printed = 0;
+ int index, have_default = 0;
+ char *blocks_printed;
+ CORE_ADDR pc = fi->pc;
+
+ if (block == 0)
+ {
+ fprintf_filtered (stream, "No symbol table info available.\n");
+ 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));
+
+ while (block != 0)
+ {
+ CORE_ADDR end = BLOCK_END (block) - 4;
+ int last_index;
+
+ if (bl != blockvector_for_pc (end, &index))
+ error ("blockvector blotch");
+ if (BLOCKVECTOR_BLOCK (bl, index) != block)
+ error ("blockvector botch");
+ last_index = BLOCKVECTOR_NBLOCKS (bl);
+ index += 1;
+
+ /* Don't print out blocks that have gone by. */
+ while (index < last_index
+ && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc)
+ index++;
+
+ while (index < last_index
+ && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end)
+ {
+ if (blocks_printed[index] == 0)
+ {
+ if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream))
+ values_printed = 1;
+ blocks_printed[index] = 1;
+ }
+ index++;
+ }
+ if (have_default)
+ return;
+ if (values_printed && this_level_only)
+ return;
+
+ /* After handling the function's top-level block, stop.
+ Don't continue to its superblock, the block of
+ per-file symbols. */
+ if (BLOCK_FUNCTION (block))
+ break;
+ block = BLOCK_SUPERBLOCK (block);
+ }
+
+ if (!values_printed && !this_level_only)
+ {
+ fprintf_filtered (stream, "No catches.\n");
+ }
}
-static int
-print_frame_arg_vars (frame, stream)
- register FRAME frame;
- register FILE *stream;
+/* ARGSUSED */
+void
+locals_info (char *args, int from_tty)
{
- struct symbol *func;
+ if (!selected_frame)
+ error ("No frame selected.");
+ print_frame_local_vars (selected_frame, 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 (!selected_frame)
+ error ("No frame selected.");
+#endif
+ }
+ else
+ {
+ /* Assume g++ compiled code -- old v 4.16 behaviour */
+ if (!selected_frame)
+ error ("No frame selected.");
+
+ print_frame_label_vars (selected_frame, 0, gdb_stdout);
+ }
+}
+
+static void
+print_frame_arg_vars (register struct frame_info *fi,
+ register struct ui_file *stream)
+{
+ struct symbol *func = get_frame_function (fi);
register struct block *b;
int nsyms;
register int i;
- register struct symbol *sym;
+ register struct symbol *sym, *sym2;
+ register int values_printed = 0;
- func = get_frame_function (frame);
if (func == 0)
- return 0;
+ {
+ fprintf_filtered (stream, "No symbol table info available.\n");
+ return;
+ }
b = SYMBOL_BLOCK_VALUE (func);
nsyms = BLOCK_NSYMS (b);
for (i = 0; i < nsyms; i++)
{
sym = BLOCK_SYM (b, i);
- if (SYMBOL_CLASS (sym) == LOC_ARG || SYMBOL_CLASS (sym) == LOC_REGPARM)
+ switch (SYMBOL_CLASS (sym))
{
- fprintf (stream, "%s = ", SYMBOL_NAME (sym));
- print_variable_value (sym, frame, stream);
- fprintf (stream, "\n");
- fflush (stream);
+ case LOC_ARG:
+ case LOC_LOCAL_ARG:
+ case LOC_REF_ARG:
+ case LOC_REGPARM:
+ case LOC_REGPARM_ADDR:
+ case LOC_BASEREG_ARG:
+ values_printed = 1;
+ fputs_filtered (SYMBOL_SOURCE_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.
+ This includes gcc1 (not gcc2) on the 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). There are also LOC_ARG/LOC_REGISTER pairs which
+ are not combined in symbol-reading. */
+
+ sym2 = lookup_symbol (SYMBOL_NAME (sym),
+ b, VAR_NAMESPACE, (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;
}
}
- return 1;
+ if (!values_printed)
+ {
+ fprintf_filtered (stream, "No arguments.\n");
+ }
+}
+
+void
+args_info (char *ignore, int from_tty)
+{
+ if (!selected_frame)
+ error ("No frame selected.");
+ print_frame_arg_vars (selected_frame, gdb_stdout);
}
+
static void
-args_info ()
+args_plus_locals_info (char *ignore, int from_tty)
{
- if (selected_frame == 0)
- error(no_sel_frame);
- print_frame_arg_vars (selected_frame, stdout);
+ args_info (ignore, from_tty);
+ locals_info (ignore, from_tty);
}
\f
-/* Select frame FRAME, and note that its stack level is LEVEL.
+
+/* Select frame FI, and note that its stack level is LEVEL.
LEVEL may be -1 if an actual level number is not known. */
void
-select_frame (frame, level)
- FRAME frame;
- int level;
+select_frame (struct frame_info *fi, int level)
{
- selected_frame = frame;
+ register struct symtab *s;
+
+ selected_frame = fi;
selected_frame_level = level;
+ if (selected_frame_level_changed_hook)
+ selected_frame_level_changed_hook (level);
+
+ /* Ensure that symbols for this frame are read in. Also, determine the
+ source language of this frame, and switch to it if desired. */
+ if (fi)
+ {
+ s = find_pc_symtab (fi->pc);
+ if (s
+ && s->language != current_language->la_language
+ && s->language != language_unknown
+ && language_mode == language_mode_auto)
+ {
+ set_language (s->language);
+ }
+ }
+}
+\f
+
+/* Select frame FI, noting that its stack level is LEVEL. Also print
+ the stack frame and show the source if this is the tui version. */
+void
+select_and_print_frame (struct frame_info *fi, int level)
+{
+ select_frame (fi, level);
+ if (fi)
+ {
+ print_stack_frame (fi, level, 1);
+ }
}
+\f
-/* Store the selected frame and its level into *FRAMEP and *LEVELP. */
+/* Store the selected frame and its level into *FRAMEP and *LEVELP.
+ If there is no selected frame, *FRAMEP is set to NULL. */
void
-record_selected_frame (frameaddrp, levelp)
- FRAME_ADDR *frameaddrp;
- int *levelp;
+record_selected_frame (CORE_ADDR *frameaddrp, int *levelp)
{
- *frameaddrp = FRAME_FP (selected_frame);
+ *frameaddrp = selected_frame ? selected_frame->frame : 0;
*levelp = selected_frame_level;
}
Can return zero under various legitimate circumstances. */
struct block *
-get_selected_block ()
+get_selected_block (void)
{
- if (!have_inferior_p () && !have_core_file_p ())
+ if (!target_has_stack)
return 0;
if (!selected_frame)
but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
how much farther the original request asked to go. */
-FRAME
-find_relative_frame (frame, level_offset_ptr)
- register FRAME frame;
- register int* level_offset_ptr;
+struct frame_info *
+find_relative_frame (register struct frame_info *frame,
+ register int *level_offset_ptr)
{
- register FRAME prev;
- register FRAME frame1, frame2;
+ register struct frame_info *prev;
+ register struct frame_info *frame1;
- if (frame == 0)
- error (no_sel_frame);
/* Going up is simple: just do get_prev_frame enough times
or until initial frame is reached. */
while (*level_offset_ptr > 0)
(*level_offset_ptr)--;
frame = prev;
}
- /* Going down could be done by iterating get_frame_info to
- find the next frame, but that would be quadratic
- since get_frame_info must scan all the way from the current frame.
- The following algorithm is linear. */
+ /* Going down is just as simple. */
if (*level_offset_ptr < 0)
{
- /* First put frame1 at innermost frame
- and frame2 N levels up from there. */
- frame1 = get_current_frame ();
- frame2 = frame1;
- while (*level_offset_ptr < 0 && frame2 != frame)
+ while (*level_offset_ptr < 0)
{
- frame2 = get_prev_frame (frame2);
- (*level_offset_ptr) ++;
+ frame1 = get_next_frame (frame);
+ if (!frame1)
+ break;
+ frame = frame1;
+ (*level_offset_ptr)++;
}
- /* Then slide frame1 and frame2 up in synchrony
- and when frame2 reaches our starting point
- frame1 must be N levels down from there. */
- while (frame2 != frame)
- {
- frame1 = get_prev_frame (frame1);
- frame2 = get_prev_frame (frame2);
- }
- return frame1;
}
return frame;
}
-/* The "frame" command. With no arg, print selected frame briefly.
+/* 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 print it. See parse_frame_specification for more info on proper
+ and select it. See parse_frame_specification for more info on proper
frame expressions. */
+/* ARGSUSED */
+#ifdef UI_OUT
+void
+select_frame_command_wrapper (char *level_exp, int from_tty)
+{
+ select_frame_command (level_exp, from_tty);
+}
+#endif
static void
-frame_command (level_exp, from_tty)
- char *level_exp;
- int from_tty;
+select_frame_command (char *level_exp, int from_tty)
{
- register FRAME frame, frame1;
+ register struct frame_info *frame, *frame1;
unsigned int level = 0;
+ if (!target_has_stack)
+ error ("No stack.");
+
frame = parse_frame_specification (level_exp);
- for (frame1 = get_prev_frame (0);
- frame1 && frame1 != frame;
- frame1 = get_prev_frame (frame1))
- level++;
+ /* Try to figure out what level this frame is. But if there is
+ no current stack, don't error out -- let the user set one. */
+ frame1 = 0;
+ if (get_current_frame ())
+ {
+ for (frame1 = get_prev_frame (0);
+ frame1 && frame1 != frame;
+ frame1 = get_prev_frame (frame1))
+ level++;
+ }
if (!frame1)
level = 0;
select_frame (frame, level);
+}
- if (!from_tty)
- return;
+/* The "frame" command. With no arg, print selected frame briefly.
+ With arg, behaves like select_frame and then prints the selected
+ frame. */
+
+void
+frame_command (char *level_exp, int from_tty)
+{
+ select_frame_command (level_exp, from_tty);
+ show_and_print_stack_frame (selected_frame, selected_frame_level, 1);
+}
+
+/* The XDB Compatibility command to print the current frame. */
- print_stack_frame (selected_frame, selected_frame_level, 1);
+static void
+current_frame_command (char *level_exp, int from_tty)
+{
+ if (target_has_stack == 0 || selected_frame == 0)
+ error ("No stack.");
+ print_only_stack_frame (selected_frame, selected_frame_level, 1);
}
/* Select the frame up one or COUNT stack levels
from the previously selected frame, and print it briefly. */
+/* ARGSUSED */
static void
-up_command (count_exp)
- char *count_exp;
+up_silently_base (char *count_exp)
{
- register FRAME frame;
+ register struct frame_info *fi;
int count = 1, count1;
if (count_exp)
- count = parse_and_eval_address (count_exp);
+ count = parse_and_eval_long (count_exp);
count1 = count;
-
- frame = find_relative_frame (selected_frame, &count1);
+
+ if (target_has_stack == 0 || selected_frame == 0)
+ error ("No stack.");
+
+ fi = find_relative_frame (selected_frame, &count1);
if (count1 != 0 && count_exp == 0)
error ("Initial frame selected; you cannot go up.");
- select_frame (frame, selected_frame_level + count - count1);
+ select_frame (fi, selected_frame_level + count - count1);
+}
+
+static void
+up_silently_command (char *count_exp, int from_tty)
+{
+ up_silently_base (count_exp);
+}
- print_stack_frame (selected_frame, selected_frame_level, 1);
+static void
+up_command (char *count_exp, int from_tty)
+{
+ up_silently_base (count_exp);
+ show_and_print_stack_frame (selected_frame, selected_frame_level, 1);
}
/* Select the frame down one or COUNT stack levels
from the previously selected frame, and print it briefly. */
+/* ARGSUSED */
static void
-down_command (count_exp)
- char *count_exp;
+down_silently_base (char *count_exp)
{
- register FRAME frame;
+ register struct frame_info *frame;
int count = -1, count1;
if (count_exp)
- count = - parse_and_eval_address (count_exp);
+ count = -parse_and_eval_long (count_exp);
count1 = count;
-
+
+ if (target_has_stack == 0 || selected_frame == 0)
+ error ("No stack.");
+
frame = find_relative_frame (selected_frame, &count1);
if (count1 != 0 && count_exp == 0)
- error ("Bottom (i.e., innermost) frame selected; you cannot go down.");
+ {
+
+ /* 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.");
+ }
+
select_frame (frame, selected_frame_level + count - count1);
+}
- print_stack_frame (selected_frame, selected_frame_level, 1);
+/* ARGSUSED */
+static void
+down_silently_command (char *count_exp, int from_tty)
+{
+ down_silently_base (count_exp);
+}
+
+static void
+down_command (char *count_exp, int from_tty)
+{
+ down_silently_base (count_exp);
+ show_and_print_stack_frame (selected_frame, selected_frame_level, 1);
}
\f
+#ifdef UI_OUT
+void
+return_command_wrapper (char *retval_exp, int from_tty)
+{
+ return_command (retval_exp, from_tty);
+}
+#endif
static void
-return_command (retval_exp, from_tty)
- char *retval_exp;
- int from_tty;
+return_command (char *retval_exp, int from_tty)
{
- struct symbol *thisfun = get_frame_function (selected_frame);
+ struct symbol *thisfun;
+ CORE_ADDR selected_frame_addr;
+ CORE_ADDR selected_frame_pc;
+ struct frame_info *frame;
+ value_ptr return_value = NULL;
+
+ if (selected_frame == NULL)
+ error ("No selected frame.");
+ thisfun = get_frame_function (selected_frame);
+ selected_frame_addr = FRAME_FP (selected_frame);
+ selected_frame_pc = selected_frame->pc;
+
+ /* Compute the return value (if any -- possibly getting errors here). */
+
+ if (retval_exp)
+ {
+ struct type *return_type = NULL;
+
+ return_value = parse_and_eval (retval_exp);
+
+ /* Cast return value to the return type of the function. */
+ if (thisfun != NULL)
+ return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun));
+ if (return_type == NULL)
+ return_type = builtin_type_int;
+ 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))
+ value_fetch_lazy (return_value);
+ }
/* If interactive, require confirmation. */
{
if (thisfun != 0)
{
- if (!query ("Make %s return now? ", SYMBOL_NAME (thisfun)))
- error ("Not confirmed.");
+ if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun)))
+ {
+ error ("Not confirmed.");
+ /* NOTREACHED */
+ }
}
- else
- if (!query ("Make selected stack frame return now? "))
- error ("Not confirmed.");
+ else if (!query ("Make selected stack frame return now? "))
+ error ("Not confirmed.");
}
- /* Do the real work. Pop until the specified frame is current. */
+ /* Do the real work. Pop until the specified frame is current. We
+ use this method because the selected_frame is not valid after
+ a POP_FRAME. The pc comparison makes this work even if the
+ selected frame shares its fp with another frame. */
- while (selected_frame != get_current_frame ())
+ while (selected_frame_addr != (frame = get_current_frame ())->frame
+ || selected_frame_pc != frame->pc)
POP_FRAME;
/* Then pop that frame. */
for return values. */
if (retval_exp)
- set_return_value (parse_and_eval (retval_exp));
+ set_return_value (return_value);
+
+ /* If we are at the end of a call dummy now, pop the dummy frame too. */
+
+ if (CALL_DUMMY_HAS_COMPLETED (read_pc(), read_sp (),
+ FRAME_FP (get_current_frame ())))
+ POP_FRAME;
/* If interactive, print the frame that is now current. */
if (from_tty)
frame_command ("0", 1);
+ else
+ select_frame_command ("0", 0);
}
-\f
-extern struct cmd_list_element *setlist;
+/* 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;
+ int found = 0;
+ struct symtabs_and_lines sals;
+ int i;
+ int level = 1;
+ struct function_bounds *func_bounds = (struct function_bounds *) NULL;
+
+ if (arg != (char *) NULL)
+ return;
+
+ fp = parse_frame_specification ("0");
+ sals = decode_line_spec (arg, 1);
+ func_bounds = (struct function_bounds *) xmalloc (
+ sizeof (struct function_bounds) * sals.nelts);
+ 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)
+ {
+ func_bounds[i].low =
+ func_bounds[i].high = (CORE_ADDR) NULL;
+ }
+ }
+
+ do
+ {
+ for (i = 0; (i < sals.nelts && !found); i++)
+ found = (fp->pc >= func_bounds[i].low &&
+ fp->pc < func_bounds[i].high);
+ if (!found)
+ {
+ level = 1;
+ fp = find_relative_frame (fp, &level);
+ }
+ }
+ while (!found && level == 0);
+
+ if (func_bounds)
+ xfree (func_bounds);
+
+ if (!found)
+ printf_filtered ("'%s' not within current stack frame.\n", arg);
+ else if (fp != selected_frame)
+ select_and_print_frame (fp, level);
+}
+
+/* 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 */
+
+ if (selected_frame)
+ {
+ s = find_pc_symtab (selected_frame->pc);
+ if (s)
+ flang = s->language;
+ else
+ flang = language_unknown;
+ }
+ else
+ flang = language_unknown;
+
+ return flang;
+}
+\f
void
-_initialize_stack ()
+_initialize_stack (void)
{
-#if 0
+#if 0
backtrace_limit = 30;
#endif
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 ("frame", class_stack, frame_command,
"Select and print a stack frame.\n\
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");
+ 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\
+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.");
+With a negative argument, print outermost -COUNT frames.\n\
+Use of the 'full' qualifier also prints the values of the local variables.\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\
+and the values of the local variables.\n\
+With a negative argument, print outermost -COUNT frames.\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.");
"Local variables of current stack frame.");
add_info ("args", args_info,
"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.");
+
+ 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.",
+ 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.");
+ "The maximum number of frames for \"backtrace\" to print by default.");
#endif
}
-
projects / deliverable / binutils-gdb.git / blobdiff