/* 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, 2004, 2005
+ Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
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 "defs.h"
#include "value.h"
void (*deprecated_selected_frame_level_changed_hook) (int);
+/* The possible choices of "set print frame-arguments, and the value
+ of this setting. */
+
+static const char *print_frame_arguments_choices[] =
+ {"all", "scalars", "none", NULL};
+static const char *print_frame_arguments = "all";
+
/* Prototypes for local functions. */
static void print_frame_local_vars (struct frame_info *, int,
enum print_what print_what, int print_args,
struct symtab_and_line sal);
-static void set_current_sal_from_frame (struct frame_info *, 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
args.frame = frame;
args.print_level = print_level;
args.print_what = print_what;
+ /* For mi, alway print location and address. */
+ args.print_what = ui_out_is_mi_like_p (uiout) ? LOC_AND_ADDRESS : print_what;
args.print_args = 1;
catch_errors (print_stack_frame_stub, &args, "", RETURN_MASK_ALL);
}
}
+/* Return non-zero if the debugger should print the value of the provided
+ symbol parameter (SYM). */
+
+static int
+print_this_frame_argument_p (struct symbol *sym)
+{
+ struct type *type;
+
+ /* If the user asked to print no argument at all, then obviously
+ do not print this argument. */
+
+ if (strcmp (print_frame_arguments, "none") == 0)
+ return 0;
+
+ /* If the user asked to print all arguments, then we should print
+ that one. */
+
+ if (strcmp (print_frame_arguments, "all") == 0)
+ return 1;
+
+ /* The user asked to print only the scalar arguments, so do not
+ print the non-scalar ones. */
+
+ type = CHECK_TYPEDEF (SYMBOL_TYPE (sym));
+ while (TYPE_CODE (type) == TYPE_CODE_REF)
+ type = CHECK_TYPEDEF (TYPE_TARGET_TYPE (type));
+ switch (TYPE_CODE (type))
+ {
+ case TYPE_CODE_ARRAY:
+ case TYPE_CODE_STRUCT:
+ case TYPE_CODE_UNION:
+ case TYPE_CODE_SET:
+ case TYPE_CODE_STRING:
+ case TYPE_CODE_BITSTRING:
+ return 0;
+ default:
+ return 1;
+ }
+}
+
/* 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
struct symbol *nsym;
nsym = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym),
b, VAR_DOMAIN, NULL, NULL);
+ gdb_assert (nsym != NULL);
if (SYMBOL_CLASS (nsym) == LOC_REGISTER)
{
/* There is a LOC_ARG/LOC_REGISTER pair. This means
annotate_arg_name_end ();
ui_out_text (uiout, "=");
- /* Avoid value_print because it will deref ref parameters.
- We just want to print their addresses. Print ??? for
- args whose address we do not know. We pass 2 as
- "recurse" to val_print because our standard indentation
- here is 4 spaces, and val_print indents 2 for each
- recurse. */
- val = read_var_value (sym, frame);
-
- annotate_arg_value (val == NULL ? NULL : value_type (val));
+ if (print_this_frame_argument_p (sym))
+ {
+ /* Avoid value_print because it will deref ref parameters.
+ We just want to print their addresses. Print ??? for
+ args whose address we do not know. We pass 2 as
+ "recurse" to val_print because our standard indentation
+ here is 4 spaces, and val_print indents 2 for each
+ recurse. */
+ val = read_var_value (sym, frame);
+
+ annotate_arg_value (val == NULL ? NULL : value_type (val));
+
+ if (val)
+ {
+ common_val_print (val, stb->stream, 0, 0, 2,
+ Val_no_prettyprint);
+ ui_out_field_stream (uiout, "value", stb);
+ }
+ else
+ ui_out_text (uiout, "???");
+ }
+ else
+ ui_out_text (uiout, "...");
- if (val)
- {
- common_val_print (val, stb->stream, 0, 0, 2, Val_no_prettyprint);
- ui_out_field_stream (uiout, "value", stb);
- }
- else
- ui_out_text (uiout, "???");
/* Invoke ui_out_tuple_end. */
do_cleanups (list_chain);
long start;
if (highest_offset == -1)
- start = FRAME_ARGS_SKIP;
+ start = gdbarch_frame_args_skip (get_frame_arch (frame));
else
start = highest_offset;
print_args_stub (void *args)
{
struct print_args_args *p = args;
+ struct gdbarch *gdbarch = get_frame_arch (p->frame);
int numargs;
- if (FRAME_NUM_ARGS_P ())
+ if (gdbarch_frame_num_args_p (gdbarch))
{
- numargs = FRAME_NUM_ARGS (p->frame);
+ numargs = gdbarch_frame_num_args (gdbarch, p->frame);
gdb_assert (numargs >= 0);
}
else
FRAME, if possible. When CENTER is true, adjust so the relevant
line is in the center of the next 'list'. */
-static void
+void
set_current_sal_from_frame (struct frame_info *frame, int center)
{
struct symtab_and_line sal;
the symbol table. That'll have parameters, but
that's preferable to displaying a mangled name. */
funname = SYMBOL_PRINT_NAME (func);
+ else
+ xfree (demangled);
}
}
}
enum language funlang = language_unknown;
const char *pc_regname;
int selected_frame_p;
+ struct gdbarch *gdbarch;
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(). */
preferable to displaying a mangled name. */
if (demangled == NULL)
funname = SYMBOL_PRINT_NAME (func);
+ else
+ xfree (demangled);
}
}
else
{
printf_filtered (_("Stack frame at "));
}
- deprecated_print_address_numeric (get_frame_base (fi), 1, gdb_stdout);
+ fputs_filtered (paddress (get_frame_base (fi)), gdb_stdout);
printf_filtered (":\n");
printf_filtered (" %s = ", pc_regname);
- deprecated_print_address_numeric (get_frame_pc (fi), 1, gdb_stdout);
+ fputs_filtered (paddress (get_frame_pc (fi)), gdb_stdout);
wrap_here (" ");
if (funname)
puts_filtered ("; ");
wrap_here (" ");
printf_filtered ("saved %s ", pc_regname);
- deprecated_print_address_numeric (frame_pc_unwind (fi), 1, gdb_stdout);
+ fputs_filtered (paddress (frame_pc_unwind (fi)), gdb_stdout);
printf_filtered ("\n");
+ if (calling_frame_info == NULL)
+ {
+ enum unwind_stop_reason reason;
+
+ reason = get_frame_unwind_stop_reason (fi);
+ if (reason != UNWIND_NO_REASON)
+ printf_filtered (_(" Outermost frame: %s\n"),
+ frame_stop_reason_string (reason));
+ }
+
if (calling_frame_info)
{
printf_filtered (" called by frame at ");
- deprecated_print_address_numeric (get_frame_base (calling_frame_info),
- 1, gdb_stdout);
+ fputs_filtered (paddress (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 ");
- deprecated_print_address_numeric (get_frame_base (get_next_frame (fi)), 1,
- gdb_stdout);
+ fputs_filtered (paddress (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));
else
{
printf_filtered (" Arglist at ");
- deprecated_print_address_numeric (arg_list, 1, gdb_stdout);
+ fputs_filtered (paddress (arg_list), gdb_stdout);
printf_filtered (",");
- if (!FRAME_NUM_ARGS_P ())
+ if (!gdbarch_frame_num_args_p (gdbarch))
{
numargs = -1;
puts_filtered (" args: ");
}
else
{
- numargs = FRAME_NUM_ARGS (fi);
+ numargs = gdbarch_frame_num_args (gdbarch, fi);
gdb_assert (numargs >= 0);
if (numargs == 0)
puts_filtered (" no args.");
else
{
printf_filtered (" Locals at ");
- deprecated_print_address_numeric (arg_list, 1, gdb_stdout);
+ fputs_filtered (paddress (arg_list), gdb_stdout);
printf_filtered (",");
}
}
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, &lval, &addr,
&realnum, NULL);
if (!optimized && lval == not_lval)
{
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, &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_size (current_gdbarch, SP_REGNUM));
+ sp = extract_unsigned_integer (value,
+ register_size (gdbarch,
+ gdbarch_sp_regnum (gdbarch)));
printf_filtered (" Previous frame's sp is ");
- deprecated_print_address_numeric (sp, 1, gdb_stdout);
+ fputs_filtered (paddress (sp), gdb_stdout);
printf_filtered ("\n");
need_nl = 0;
}
else if (!optimized && lval == lval_memory)
{
printf_filtered (" Previous frame's sp at ");
- deprecated_print_address_numeric (addr, 1, gdb_stdout);
+ fputs_filtered (paddress (addr), gdb_stdout);
printf_filtered ("\n");
need_nl = 0;
}
else if (!optimized && 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
- && gdbarch_register_reggroup_p (current_gdbarch, i, all_reggroup))
+ 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. */
else
puts_filtered (",");
wrap_here (" ");
- printf_filtered (" %s at ", REGISTER_NAME (i));
- deprecated_print_address_numeric (addr, 1, gdb_stdout);
+ printf_filtered (" %s at ",
+ gdbarch_register_name (gdbarch, i));
+ fputs_filtered (paddress (addr), gdb_stdout);
count++;
}
}
print_frame_info (fi, 1, LOCATION, 1);
if (show_locals)
print_frame_local_vars (fi, 1, gdb_stdout);
+
+ /* 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 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));
+ }
}
struct backtrace_command_args
if (addressprint)
{
fprintf_filtered (stream, " ");
- deprecated_print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream);
+ fputs_filtered (paddress (SYMBOL_VALUE_ADDRESS (sym)), stream);
}
fprintf_filtered (stream, " in file %s, line %d\n",
sal.symtab->filename, sal.line);
print_frame_label_vars (struct frame_info *frame, int this_level_only,
struct ui_file *stream)
{
+#if 1
+ fprintf_filtered (stream, "print_frame_label_vars disabled.\n");
+#else
struct blockvector *bl;
struct block *block = get_frame_block (frame, 0);
int values_printed = 0;
if (!values_printed && !this_level_only)
fprintf_filtered (stream, _("No catches.\n"));
+#endif
}
void
{
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"));
- }
- else
- {
- /* Assume g++ compiled code; old GDB 4.16 behaviour. */
- print_frame_label_vars (get_selected_frame (_("No frame selected.")),
- 0, gdb_stdout);
- }
+ /* Assume g++ compiled code; old GDB 4.16 behaviour. */
+ print_frame_label_vars (get_selected_frame (_("No frame selected.")),
+ 0, gdb_stdout);
}
static void
if (!target_has_stack)
return 0;
- /* NOTE: cagney/2002-11-28: Why go to all this effort to not create
- a selected/current frame? Perhaps 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.
is discarded, side effects such as "return i++" still
occur. */
return_value = NULL;
- /* FIXME: cagney/2004-01-17: If the architecture implements both
- return_value and extract_returned_value_address, should allow
- "return" to work - don't set return_value to NULL. */
- else if (!gdbarch_return_value_p (current_gdbarch)
- && (TYPE_CODE (return_type) == TYPE_CODE_STRUCT
- || TYPE_CODE (return_type) == TYPE_CODE_UNION))
- {
- /* NOTE: cagney/2003-10-20: Compatibility hack for legacy
- code. Old architectures don't expect STORE_RETURN_VALUE
- to be called with with a small struct that needs to be
- stored in registers. Don't start doing it now. */
- query_prefix = "\
-A structure or union return type is not supported by this architecture.\n\
-If you continue, the return value that you specified will be ignored.\n";
- return_value = NULL;
- }
- else if (using_struct_return (return_type, 0))
+ else if (using_struct_return (return_type))
{
query_prefix = "\
The location at which to store the function's return value is unknown.\n\
struct frame_id selected_id = get_frame_id (get_selected_frame (NULL));
while (!frame_id_eq (selected_id, get_frame_id (get_current_frame ())))
{
- if (frame_id_inner (selected_id, get_frame_id (get_current_frame ())))
+ struct frame_info *frame = get_current_frame ();
+ if (frame_id_inner (get_frame_arch (frame), selected_id,
+ get_frame_id (frame)))
/* Caught in the safety net, oops! We've gone way past the
selected frame. */
error (_("Problem while popping stack frames (corrupt stack?)"));
frame). */
frame_pop (get_current_frame ());
- /* Store RETURN_VAUE in the just-returned register set. */
+ /* Store RETURN_VALUE in the just-returned register set. */
if (return_value != NULL)
{
struct type *return_type = value_type (return_value);
- gdb_assert (gdbarch_return_value (current_gdbarch, return_type,
- NULL, NULL, NULL)
+ struct gdbarch *gdbarch = get_regcache_arch (get_current_regcache ());
+ gdb_assert (gdbarch_return_value (gdbarch, return_type, NULL, NULL, NULL)
== RETURN_VALUE_REGISTER_CONVENTION);
- gdbarch_return_value (current_gdbarch, return_type,
- current_regcache, NULL /*read*/,
+ gdbarch_return_value (gdbarch, return_type,
+ get_current_regcache (), NULL /*read*/,
value_contents (return_value) /*write*/);
}
if (!found)
printf_filtered (_("'%s' not within current stack frame.\n"), arg);
- else if (frame != deprecated_selected_frame)
+ else if (frame != get_selected_frame (NULL))
select_and_print_frame (frame);
}
enum language
get_frame_language (void)
{
- struct frame_info *frame = deprecated_selected_frame;
+ struct frame_info *frame = deprecated_safe_get_selected_frame ();
if (frame)
{
add_info ("catch", catch_info,
_("Exceptions that can be caught in the current stack frame."));
+ add_setshow_enum_cmd ("frame-arguments", class_stack,
+ print_frame_arguments_choices, &print_frame_arguments,
+ _("Set printing of non-scalar frame arguments"),
+ _("Show printing of non-scalar frame arguments"),
+ NULL, NULL, NULL, &setprintlist, &showprintlist);
+
#if 0
add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, _(\
"Specify maximum number of frames for \"backtrace\" to print by default."),