/* Print and select stack frames for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
+ Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
This file is part of GDB.
-GDB is free software; you can redistribute it and/or modify
+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 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
-GDB is distributed in the hope that it will be useful,
+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.
You should have received a copy of the GNU General Public License
-along with GDB; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#include "defs.h"
#include "param.h"
+#include "language.h"
#include "symtab.h"
#include "frame.h"
#include "gdbcmd.h"
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 */
extern char *reg_names[]; /* Names of registers */
/* Thie "selected" stack frame is used by default for local and arg access.
If SOURCE is 1, print the source line as well.
If SOURCE is -1, print ONLY the source line. */
-static void
+void
print_stack_frame (frame, level, source)
FRAME frame;
int level;
printf_filtered ("#%-2d ", level);
if (addressprint)
- printf_filtered ("0x%x in ", fi->pc);
+ printf_filtered ("%s in ", local_hex_string(fi->pc));
fputs_demangled (fname, stdout, -1);
fputs_filtered (" (...)\n", stdout);
printf_filtered ("#%-2d ", level);
if (addressprint)
if (fi->pc != sal.pc || !sal.symtab)
- printf_filtered ("0x%x in ", fi->pc);
+ printf_filtered ("%s in ", local_hex_string(fi->pc));
fputs_demangled (funname ? funname : "??", stdout, -1);
wrap_here (" ");
fputs_filtered (" (", stdout);
if (!done)
{
if (addressprint && mid_statement)
- printf_filtered ("0x%x\t", fi->pc);
+ printf_filtered ("%s\t", local_hex_string(fi->pc));
print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
}
- current_source_line = max (sal.line - lines_to_list () / 2, 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);
}
-/* Call here to print info on selected frame, after a trap. */
-
-void
-print_sel_frame (just_source)
- int just_source;
-{
- print_stack_frame (selected_frame, -1, just_source ? -1 : 1);
-}
-
-/* Print info on the selected frame, including level number
- but not source. */
-
-void
-print_selected_frame ()
-{
- print_stack_frame (selected_frame, selected_frame_level, 0);
-}
-
void flush_cached_frames ();
#ifdef FRAME_SPECIFICATION_DYADIC
/*
* 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).
*/
static FRAME
parse_frame_specification (frame_exp)
switch (numargs)
{
case 0:
+ if (selected_frame == NULL)
+ error ("No selected frame.");
return selected_frame;
/* NOTREACHED */
case 1:
struct frame_saved_regs fsr;
struct symtab_and_line sal;
struct symbol *func;
+ struct symtab *s;
FRAME calling_frame;
int i, count;
char *funname = 0;
fi = get_frame_info (frame);
sal = find_pc_line (fi->pc, fi->next_frame);
func = get_frame_function (frame);
+ s = find_pc_symtab(fi->pc);
if (func)
funname = SYMBOL_NAME (func);
else
}
calling_frame = get_prev_frame (frame);
- if (!addr_exp && selected_frame_level >= 0)
- printf_filtered ("Stack level %d, frame at 0x%x:\n %s = 0x%x",
- selected_frame_level, FRAME_FP(frame),
- reg_names[PC_REGNUM], fi->pc);
- else
- printf_filtered ("Stack frame at 0x%x:\n %s = 0x%x",
- FRAME_FP(frame), reg_names[PC_REGNUM], fi->pc);
+ if (!addr_exp && selected_frame_level >= 0) {
+ printf_filtered ("Stack level %d, frame at %s:\n",
+ selected_frame_level,
+ local_hex_string(FRAME_FP(frame)));
+ } else {
+ printf_filtered ("Stack frame at %s:\n",
+ local_hex_string(FRAME_FP(frame)));
+ }
+ printf_filtered (" %s = %s",
+ reg_names[PC_REGNUM],
+ local_hex_string(fi->pc));
wrap_here (" ");
if (funname)
- printf_filtered (" in %s", funname);
+ {
+ printf_filtered (" in ");
+ fputs_demangled (funname, stdout, 1);
+ }
wrap_here (" ");
if (sal.symtab)
printf_filtered (" (%s:%d)", sal.symtab->filename, sal.line);
puts_filtered ("; ");
wrap_here (" ");
- printf_filtered ("saved %s 0x%x\n", reg_names[PC_REGNUM],
- FRAME_SAVED_PC (frame));
+ printf_filtered ("saved %s %s\n", reg_names[PC_REGNUM],
+ local_hex_string(FRAME_SAVED_PC (frame)));
if (calling_frame)
- printf_filtered (" called by frame at 0x%x", FRAME_FP (calling_frame));
+ printf_filtered (" called by frame at %s",
+ local_hex_string(FRAME_FP (calling_frame)));
if (fi->next_frame && calling_frame)
puts_filtered (",");
wrap_here (" ");
if (fi->next_frame)
- printf_filtered (" caller of frame at 0x%x", fi->next_frame);
+ printf_filtered (" caller of frame at %s", local_hex_string(fi->next_frame));
if (fi->next_frame || calling_frame)
puts_filtered ("\n");
+ if (s)
+ printf_filtered(" source language %s.\n", language_str(s->language));
{
/* Address of the argument list for this frame, or 0. */
printf_filtered (" Arglist at unknown address.\n");
else
{
- printf_filtered (" Arglist at 0x%x,", arg_list);
+ printf_filtered (" Arglist at %s,", local_hex_string(arg_list));
FRAME_NUM_ARGS (numargs, fi);
if (numargs < 0)
get_frame_saved_regs (fi, &fsr);
/* 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 0x%x\n", fsr.regs[SP_REGNUM]);
+ printf_filtered (" Previous frame's sp is %s\n",
+ local_hex_string(fsr.regs[SP_REGNUM]));
count = 0;
for (i = 0; i < NUM_REGS; i++)
if (fsr.regs[i] && i != SP_REGNUM)
else
puts_filtered (",");
wrap_here (" ");
- printf_filtered (" %s at 0x%x", reg_names[i], fsr.regs[i]);
+ printf_filtered (" %s at %s", reg_names[i],
+ local_hex_string(fsr.regs[i]));
count++;
}
if (count)
register FRAME trailing;
register int trailing_level;
+ 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
fputs_filtered (" = ", stream);
print_variable_value (sym, frame, stream);
fprintf_filtered (stream, "\n");
- fflush (stream);
}
}
return values_printed;
}
-/* Same, but print labels.
- FIXME, this does not even reference FRAME... --gnu */
+/* Same, but print labels. */
static int
-print_block_frame_labels (b, frame, have_default, stream)
+print_block_frame_labels (b, have_default, stream)
struct block *b;
- register FRAME frame;
int *have_default;
register FILE *stream;
{
values_printed = 1;
fputs_demangled (SYMBOL_NAME (sym), stream, 1);
if (addressprint)
- fprintf_filtered (stream, " 0x%x", SYMBOL_VALUE_ADDRESS (sym));
+ fprintf_filtered (stream, " %s",
+ local_hex_string(SYMBOL_VALUE_ADDRESS (sym)));
fprintf_filtered (stream, " in file %s, line %d\n",
sal.symtab->filename, sal.line);
- fflush (stream);
}
}
return values_printed;
or 0 if nothing was printed because we have no info
on the function running in FRAME. */
-static int
+static void
print_frame_local_vars (frame, stream)
register FRAME frame;
register FILE *stream;
if (block == 0)
{
fprintf_filtered (stream, "No symbol table info available.\n");
- fflush (stream);
- return 0;
+ return;
}
while (block != 0)
if (!values_printed)
{
fprintf_filtered (stream, "No locals.\n");
- fflush (stream);
}
-
- return 1;
}
/* Same, but print labels. */
-static int
+static void
print_frame_label_vars (frame, this_level_only, stream)
register FRAME frame;
int this_level_only;
if (block == 0)
{
fprintf_filtered (stream, "No symbol table info available.\n");
- fflush (stream);
- return 0;
+ return;
}
bl = blockvector_for_pc (BLOCK_END (block) - 4, &index);
{
if (blocks_printed[index] == 0)
{
- if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), frame, &have_default, stream))
+ if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream))
values_printed = 1;
blocks_printed[index] = 1;
}
index++;
}
if (have_default)
- return 1;
+ return;
if (values_printed && this_level_only)
- return 1;
+ return;
/* After handling the function's top-level block, stop.
Don't continue to its superblock, the block of
if (!values_printed && !this_level_only)
{
fprintf_filtered (stream, "No catches.\n");
- fflush (stream);
}
-
- return values_printed;
}
+/* ARGSUSED */
static void
locals_info (args, from_tty)
char *args;
int from_tty;
{
- if (!target_has_stack)
- error ("No stack.");
-
+ if (!selected_frame)
+ error ("No frame selected.");
print_frame_local_vars (selected_frame, stdout);
}
static void
catch_info ()
{
- if (!target_has_stack)
- error ("No stack.");
-
+ if (!selected_frame)
+ error ("No frame selected.");
print_frame_label_vars (selected_frame, 0, stdout);
}
-static int
+static void
print_frame_arg_vars (frame, stream)
register FRAME frame;
register FILE *stream;
if (func == 0)
{
fprintf_filtered (stream, "No symbol table info available.\n");
- fflush (stream);
- return 0;
+ return;
}
b = SYMBOL_BLOCK_VALUE (func);
b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL);
print_variable_value (sym2, frame, stream);
fprintf_filtered (stream, "\n");
- fflush (stream);
}
}
if (!values_printed)
{
fprintf_filtered (stream, "No arguments.\n");
- fflush (stream);
}
-
- return 1;
}
static void
args_info ()
{
- if (!target_has_stack)
- error ("No stack.");
+ if (!selected_frame)
+ error ("No frame selected.");
print_frame_arg_vars (selected_frame, stdout);
}
\f
FRAME frame;
int level;
{
+ register struct symtab *s;
+
selected_frame = frame;
selected_frame_level = level;
- /* Ensure that symbols for this frame are readin. */
+
+ /* Ensure that symbols for this frame are read in. Also, determine the
+ source language of this frame, and switch to it if desired. */
if (frame)
- find_pc_symtab (get_frame_info (frame)->pc);
+ {
+ s = find_pc_symtab (get_frame_info (frame)->pc);
+ if (s
+ && s->language != current_language->la_language
+ && s->language != language_unknown
+ && language_mode == language_mode_auto) {
+ set_language(s->language);
+ }
+ }
}
-/* 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;
{
- *frameaddrp = FRAME_FP (selected_frame);
+ *frameaddrp = selected_frame ? FRAME_FP (selected_frame) : NULL;
*levelp = selected_frame_level;
}
register int* level_offset_ptr;
{
register FRAME prev;
- register FRAME frame1, frame2;
+ register FRAME frame1;
/* Going up is simple: just do get_prev_frame enough times
or until initial frame is reached. */
(*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)
- {
- frame2 = get_prev_frame (frame2);
- (*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;
+ while (*level_offset_ptr < 0) {
+ frame1 = get_next_frame (frame);
+ if (!frame1)
+ break;
+ frame = frame1;
+ (*level_offset_ptr)++;
+ }
}
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 */
static void
-frame_command (level_exp, from_tty)
+select_frame_command (level_exp, from_tty)
char *level_exp;
int from_tty;
{
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. */
+static void
+frame_command (level_exp, from_tty)
+ char *level_exp;
+ int from_tty;
+{
+ select_frame_command (level_exp, from_tty);
print_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_silently_command (count_exp, from_tty)
char *count_exp;
/* Select the frame down one or COUNT stack levels
from the previously selected frame, and print it briefly. */
+/* ARGSUSED */
static void
down_silently_command (count_exp, from_tty)
char *count_exp;
count = - parse_and_eval_address (count_exp);
count1 = count;
+ if (!target_has_stack)
+ 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.");
char *retval_exp;
int from_tty;
{
- struct symbol *thisfun = get_frame_function (selected_frame);
- FRAME_ADDR selected_frame_addr = FRAME_FP (selected_frame);
- CORE_ADDR selected_frame_pc = (get_frame_info (selected_frame))->pc;
+ struct symbol *thisfun;
+ FRAME_ADDR selected_frame_addr;
+ CORE_ADDR selected_frame_pc;
FRAME frame;
+ if (selected_frame == NULL)
+ error ("No selected frame.");
+ thisfun = get_frame_function (selected_frame);
+ selected_frame_addr = FRAME_FP (selected_frame);
+ selected_frame_pc = (get_frame_info (selected_frame))->pc;
+
/* If interactive, require confirmation. */
if (from_tty)
if (from_tty)
frame_command ("0", 1);
}
+
+/* Gets the language of the current frame. */
+enum language
+get_frame_language()
+{
+ register struct symtab *s;
+ FRAME fr;
+ enum language flang; /* The language of the current frame */
+
+ fr = get_frame_info(selected_frame);
+ if(fr)
+ {
+ s = find_pc_symtab(fr->pc);
+ if(s)
+ flang = s->language;
+ else
+ flang = language_unknown;
+ }
+ else
+ flang = language_unknown;
+
+ return flang;
+}
\f
void
_initialize_stack ()
add_com_alias ("f", "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.");
"The maximum number of frames for \"backtrace\" to print by default.");
#endif
}
-
projects / deliverable / binutils-gdb.git / blobdiff