/* Print and select stack frames for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#include <stdio.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 "gdbcmd.h"
-#include "value.h"
#include "gdbcore.h"
#include "target.h"
#include "breakpoint.h"
+#include "demangle.h"
+#include "inferior.h"
+#include "annotate.h"
+
+static void return_command PARAMS ((char *, int));
+
+static void down_command PARAMS ((char *, int));
+
+static void down_silently_command PARAMS ((char *, int));
+
+static void up_command PARAMS ((char *, int));
+
+static void up_silently_command PARAMS ((char *, int));
+
+static void frame_command PARAMS ((char *, int));
+
+static void select_frame_command PARAMS ((char *, int));
+
+static void args_info PARAMS ((char *, int));
+
+static void print_frame_arg_vars PARAMS ((struct frame_info *, GDB_FILE *));
+
+static void catch_info PARAMS ((char *, int));
+
+static void locals_info PARAMS ((char *, int));
+
+static void print_frame_label_vars PARAMS ((struct frame_info *, int,
+ GDB_FILE *));
+
+static void print_frame_local_vars PARAMS ((struct frame_info *, GDB_FILE *));
+
+static int print_block_frame_labels PARAMS ((struct block *, int *,
+ GDB_FILE *));
+
+static int print_block_frame_locals PARAMS ((struct block *,
+ struct frame_info *,
+ GDB_FILE *));
+
+static void backtrace_command PARAMS ((char *, int));
+
+static struct frame_info *parse_frame_specification PARAMS ((char *));
+
+static void frame_info PARAMS ((char *, int));
extern int addressprint; /* Print addresses, or stay symbolic only? */
extern int info_verbose; /* Verbosity of symbol reading msgs */
-extern char *reg_names[]; /* Names of registers */
+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;
-/* Nonzero means print the full filename and linenumber
- when a frame is printed, and do so in a format programs can parse. */
+/* 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. */
-int frame_file_full_name = 0;
+int annotation_level = 0;
-void print_frame_info ();
\f
-/* Print a stack frame briefly. FRAME should be the frame id
+struct print_stack_frame_args {
+ struct frame_info *fi;
+ int level;
+ int source;
+ int args;
+};
+
+static int print_stack_frame_stub PARAMS ((char *));
+
+/* Pass the args the way catch_errors wants them. */
+static int
+print_stack_frame_stub (args)
+ char *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;
+}
+
+/* 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. */
-static void
-print_stack_frame (frame, level, source)
- FRAME frame;
+void
+print_stack_frame (fi, level, source)
+ 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_ERROR);
+}
+
+struct print_args_args {
+ struct symbol *func;
struct frame_info *fi;
+};
- fi = get_frame_info (frame);
+static int print_args_stub PARAMS ((char *));
- print_frame_info (fi, level, source, 1);
+/* Pass the args the way catch_errors wants them. */
+
+static int
+print_args_stub (args)
+ char *args;
+{
+ int numargs;
+ struct print_args_args *p = (struct print_args_args *)args;
+
+ FRAME_NUM_ARGS (numargs, (p->fi));
+ print_frame_args (p->func, p->fi, numargs, gdb_stdout);
+ return 0;
}
+/* LEVEL is the level of the frame, or -1 if it is the innermost frame
+ but we don't want to print the level. */
+
void
print_frame_info (fi, level, source, args)
struct frame_info *fi;
struct symtab_and_line sal;
struct symbol *func;
register char *funname = 0;
- int numargs;
+ enum language funlang = language_unknown;
-#if 0 /* Symbol reading is fast enough now */
- struct partial_symtab *pst;
+#if 0
+ char buf[MAX_REGISTER_RAW_SIZE];
+ CORE_ADDR sp;
- /* Don't give very much information if we haven't readin the
- symbol table yet. */
- pst = find_pc_psymtab (fi->pc);
- if (pst && !pst->readin)
+ /* 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
{
- /* Abbreviated information. */
- char *fname;
+ annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
- if (!find_pc_partial_function (fi->pc, &fname, 0))
- fname = "??";
-
- printf_filtered ("#%-2d ", level);
- if (addressprint)
- printf_filtered ("0x%x in ", fi->pc);
+ /* 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);
- fputs_demangled (fname, stdout, -1);
- fputs_filtered (" (...)\n", stdout);
-
+ /* 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_signal_handler_caller ();
+ printf_filtered ("<signal handler called>\n");
+ annotate_frame_end ();
return;
}
-#endif
- sal = find_pc_line (fi->pc, fi->next_frame);
+ /* 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));
+
func = find_pc_function (fi->pc);
if (func)
{
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).
+ 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 misc_function_vector as well, and if it comes
+ 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
- misc_function_vector symbols in the middle of a function. */
- int misc_index = find_pc_misc_function (fi->pc);
- if (misc_index >= 0
- && (misc_function_vector[misc_index].address
+ 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 = misc_function_vector[misc_index].name;
+ funname = SYMBOL_NAME (msymbol);
+ funlang = SYMBOL_LANGUAGE (msymbol);
}
else
- funname = SYMBOL_NAME (func);
+ {
+ funname = SYMBOL_NAME (func);
+ funlang = SYMBOL_LANGUAGE (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);
+ }
}
if (source >= 0 || !sal.symtab)
{
+ annotate_frame_begin (level == -1 ? 0 : level, fi->pc);
+
if (level >= 0)
printf_filtered ("#%-2d ", level);
if (addressprint)
if (fi->pc != sal.pc || !sal.symtab)
- printf_filtered ("0x%x in ", fi->pc);
- fputs_demangled (funname ? funname : "??", stdout, -1);
+ {
+ annotate_frame_address ();
+ print_address_numeric (fi->pc, 1, gdb_stdout);
+ annotate_frame_address_end ();
+ printf_filtered (" in ");
+ }
+ annotate_frame_function_name ();
+ fprintf_symbol_filtered (gdb_stdout, funname ? funname : "??", funlang,
+ DMGL_ANSI);
wrap_here (" ");
- fputs_filtered (" (", stdout);
+ annotate_frame_args ();
+ fputs_filtered (" (", gdb_stdout);
if (args)
{
- FRAME_NUM_ARGS (numargs, fi);
- print_frame_args (func, fi, numargs, stdout);
+ struct print_args_args args;
+ args.fi = fi;
+ args.func = func;
+ catch_errors (print_args_stub, (char *)&args, "", RETURN_MASK_ERROR);
}
printf_filtered (")");
if (sal.symtab && sal.symtab->filename)
{
+ annotate_frame_source_begin ();
wrap_here (" ");
- printf_filtered (" at %s:%d", sal.symtab->filename, sal.line);
+ 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);
+ annotate_frame_source_end ();
+ }
+
+#ifdef PC_LOAD_SEGMENT
+ /* If we couldn't print out function name but if can figure out what
+ load segment this pc value is from, at least print out some info
+ about its load segment. */
+ if (!funname)
+ {
+ annotate_frame_where ();
+ wrap_here (" ");
+ printf_filtered (" from %s", PC_LOAD_SEGMENT (fi->pc));
+ }
+#endif
+#ifdef PC_SOLIB
+ if (!funname)
+ {
+ char *lib = PC_SOLIB (fi->pc);
+ if (lib)
+ {
+ annotate_frame_where ();
+ wrap_here (" ");
+ printf_filtered (" from %s", lib);
+ }
}
+#endif
printf_filtered ("\n");
}
{
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);
+ if (annotation_level)
+ done = identify_source_line (sal.symtab, sal.line, mid_statement,
+ fi->pc);
if (!done)
{
if (addressprint && mid_statement)
- printf_filtered ("0x%x\t", fi->pc);
- print_source_lines (sal.symtab, sal.line, sal.line + 1, 0);
+ {
+ print_address_numeric (fi->pc, 1, gdb_stdout);
+ printf_filtered ("\t");
+ }
+ 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 - 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. */
+ annotate_frame_end ();
-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);
+ gdb_flush (gdb_stdout);
}
-void flush_cached_frames ();
+/* 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). */
-#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).
- */
-static FRAME
+static struct frame_info *
parse_frame_specification (frame_exp)
char *frame_exp;
{
int numargs = 0;
- int arg1, arg2;
+#define MAXARGS 4
+ CORE_ADDR args[MAXARGS];
if (frame_exp)
{
struct cleanup *tmp_cleanup;
while (*frame_exp == ' ') frame_exp++;
- for (p = frame_exp; *p && *p != ' '; p++)
- ;
- if (*frame_exp)
+ while (*frame_exp)
{
- numargs = 1;
+ if (numargs > MAXARGS)
+ error ("Too many args in frame specification");
+ /* Parse an argument. */
+ for (p = frame_exp; *p && *p != ' '; p++)
+ ;
addr_string = savestring(frame_exp, p - frame_exp);
{
tmp_cleanup = make_cleanup (free, addr_string);
- arg1 = parse_and_eval_address (addr_string);
+ args[numargs++] = parse_and_eval_address (addr_string);
do_cleanups (tmp_cleanup);
}
+ /* Skip spaces, move to possible next arg. */
while (*p == ' ') p++;
-
- if (*p)
- {
- numargs = 2;
- arg2 = parse_and_eval_address (p);
- }
+ frame_exp = p;
}
}
/* NOTREACHED */
case 1:
{
- int level = arg1;
- FRAME fid = find_relative_frame (get_current_frame (), &level);
- FRAME tfid;
+ int level = args[0];
+ 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 */
}
This means absolutely all information in the frame is printed. */
static void
-frame_info (addr_exp)
+frame_info (addr_exp, from_tty)
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;
+ enum language funlang = language_unknown;
if (!target_has_stack)
- error ("No inferior or core file.");
+ error ("No stack.");
- frame = parse_frame_specification (addr_exp);
- if (!frame)
+ fi = parse_frame_specification (addr_exp);
+ if (fi == NULL)
error ("Invalid frame specified.");
- fi = get_frame_info (frame);
- 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);
+ {
+ funname = SYMBOL_NAME (func);
+ funlang = SYMBOL_LANGUAGE (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_filtered ("Stack level %d, frame at 0x%x:\n %s = 0x%x",
- selected_frame_level, FRAME_FP(frame),
- reg_names[PC_REGNUM], 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_filtered ("Stack frame at 0x%x:\n %s = 0x%x",
- FRAME_FP(frame), reg_names[PC_REGNUM], fi->pc);
+ {
+ printf_filtered ("Stack frame at ");
+ print_address_numeric (fi->frame, 1, gdb_stdout);
+ printf_filtered (":\n");
+ }
+ printf_filtered (" %s = ", reg_names[PC_REGNUM]);
+ print_address_numeric (fi->pc, 1, gdb_stdout);
wrap_here (" ");
if (funname)
- printf_filtered (" in %s", funname);
+ {
+ printf_filtered (" in ");
+ fprintf_symbol_filtered (gdb_stdout, funname, funlang,
+ DMGL_ANSI | DMGL_PARAMS);
+ }
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));
- if (calling_frame)
- printf_filtered (" called by frame at 0x%x", FRAME_FP (calling_frame));
- if (fi->next_frame && calling_frame)
+ printf_filtered ("saved %s ", reg_names[PC_REGNUM]);
+ print_address_numeric (FRAME_SAVED_PC (fi), 1, gdb_stdout);
+ printf_filtered ("\n");
+
+ {
+ int frameless = 0;
+#ifdef FRAMELESS_FUNCTION_INVOCATION
+ FRAMELESS_FUNCTION_INVOCATION (fi, frameless);
+#endif
+ 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_frame)
- printf_filtered (" caller of frame at 0x%x", fi->next_frame);
- if (fi->next_frame || calling_frame)
+ 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. */
int numargs;
if (arg_list == 0)
- printf_filtered (" Arglist at unknown address.\n");
+ printf_filtered (" Arglist at unknown address.\n");
else
{
- printf_filtered (" Arglist at 0x%x,", arg_list);
+ printf_filtered (" Arglist at ");
+ print_address_numeric (arg_list, 1, gdb_stdout);
+ printf_filtered (",");
FRAME_NUM_ARGS (numargs, fi);
if (numargs < 0)
puts_filtered (" 1 arg: ");
else
printf_filtered (" %d args: ", numargs);
- print_frame_args (func, fi, numargs, stdout);
+ 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 (",");
+ }
+ }
#if defined (FRAME_FIND_SAVED_REGS)
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 ");
+ print_address_numeric (fsr.regs[SP_REGNUM], 1, gdb_stdout);
+ printf_filtered ("\n");
count = 0;
- for (i = 0; i < NUM_REGS; i++)
+ numregs = ARCH_NUM_REGS;
+ for (i = 0; i < numregs; i++)
if (fsr.regs[i] && i != SP_REGNUM)
{
if (count == 0)
else
puts_filtered (",");
wrap_here (" ");
- printf_filtered (" %s at 0x%x", reg_names[i], fsr.regs[i]);
+ printf_filtered (" %s at ", reg_names[i]);
+ print_address_numeric (fsr.regs[i], 1, gdb_stdout);
count++;
}
if (count)
puts_filtered ("\n");
+#else /* Have FRAME_FIND_SAVED_REGS. */
+ /* 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");
#endif /* Have FRAME_FIND_SAVED_REGS. */
}
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
{
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 (!target_has_stack)
count = parse_and_eval_address (count_exp);
if (count < 0)
{
- FRAME current;
+ struct frame_info *current;
count = -count;
if people have strong opinions against reading symbols for
backtrace this may have to be an option. */
i = count;
- for (frame = trailing;
- frame != NULL && i--;
- frame = get_prev_frame (frame))
+ for (fi = trailing;
+ fi != NULL && i--;
+ fi = get_prev_frame (fi))
{
QUIT;
- fi = get_frame_info (frame);
ps = find_pc_psymtab (fi->pc);
if (ps)
- (void) PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */
+ PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */
}
}
- for (i = 0, frame = trailing;
- frame && count--;
- i++, frame = get_prev_frame (frame))
+ for (i = 0, fi = trailing;
+ fi && count--;
+ i++, fi = get_prev_frame (fi))
{
QUIT;
- fi = get_frame_info (frame);
+
+ /* Don't use print_stack_frame; if an error() occurs it probably
+ means further attempts to backtrace would fail (on the other
+ hand, perhaps the code does or could be fixed to make sure
+ the frame->prev field gets set to NULL in that case). */
print_frame_info (fi, trailing_level + i, 0, 1);
}
/* If we've stopped before the end, mention that. */
- if (frame && from_tty)
+ if (fi && from_tty)
printf_filtered ("(More stack frames follow...)\n");
}
\f
Return 1 if any variables were printed; 0 otherwise. */
static int
-print_block_frame_locals (b, frame, stream)
+print_block_frame_locals (b, fi, stream)
struct block *b;
- register FRAME frame;
- register FILE *stream;
+ register struct frame_info *fi;
+ register GDB_FILE *stream;
{
int nsyms;
register int i;
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)
+ switch (SYMBOL_CLASS (sym))
{
+ case LOC_LOCAL:
+ case LOC_REGISTER:
+ case LOC_STATIC:
+ case LOC_BASEREG:
values_printed = 1;
- fprint_symbol (stream, SYMBOL_NAME (sym));
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
fputs_filtered (" = ", stream);
- print_variable_value (sym, frame, stream);
+ print_variable_value (sym, fi, stream);
fprintf_filtered (stream, "\n");
- fflush (stream);
+ break;
+
+ default:
+ /* Ignore symbols which are not locals. */
+ break;
}
}
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;
+ register GDB_FILE *stream;
{
int nsyms;
register int i;
for (i = 0; i < nsyms; i++)
{
sym = BLOCK_SYM (b, i);
- if (! strcmp (SYMBOL_NAME (sym), "default"))
+ if (STREQ (SYMBOL_NAME (sym), "default"))
{
if (*have_default)
continue;
struct symtab_and_line sal;
sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0);
values_printed = 1;
- fputs_demangled (SYMBOL_NAME (sym), stream, 1);
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
if (addressprint)
- fprintf_filtered (stream, " 0x%x", SYMBOL_VALUE_ADDRESS (sym));
+ {
+ 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);
- fflush (stream);
}
}
return values_printed;
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 (fi, stream)
+ register struct frame_info *fi;
+ register GDB_FILE *stream;
{
- register struct block *block = get_frame_block (frame);
+ register struct block *block = get_frame_block (fi);
register int values_printed = 0;
if (block == 0)
{
fprintf_filtered (stream, "No symbol table info available.\n");
- fflush (stream);
- return 0;
+ return;
}
while (block != 0)
{
- if (print_block_frame_locals (block, frame, stream))
+ if (print_block_frame_locals (block, fi, stream))
values_printed = 1;
/* After handling the function's top-level block, stop.
Don't continue to its superblock, the block of
if (!values_printed)
{
fprintf_filtered (stream, "No locals.\n");
- fflush (stream);
}
-
- return 1;
}
/* Same, but print labels. */
-static int
-print_frame_label_vars (frame, this_level_only, stream)
- register FRAME frame;
+static void
+print_frame_label_vars (fi, this_level_only, stream)
+ register struct frame_info *fi;
int this_level_only;
- register FILE *stream;
+ register GDB_FILE *stream;
{
- extern struct blockvector *blockvector_for_pc ();
register struct blockvector *bl;
- register struct block *block = get_frame_block (frame);
+ register struct block *block = get_frame_block (fi);
register int values_printed = 0;
int index, have_default = 0;
char *blocks_printed;
- struct frame_info *fi = get_frame_info (frame);
CORE_ADDR pc = fi->pc;
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);
blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
- bzero (blocks_printed, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
+ memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char));
while (block != 0)
{
{
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.");
-
- print_frame_local_vars (selected_frame, stdout);
+ if (!selected_frame)
+ error ("No frame selected.");
+ print_frame_local_vars (selected_frame, gdb_stdout);
}
static void
-catch_info ()
+catch_info (ignore, from_tty)
+ char *ignore;
+ int from_tty;
{
- if (!target_has_stack)
- error ("No stack.");
-
- print_frame_label_vars (selected_frame, 0, stdout);
+ if (!selected_frame)
+ error ("No frame selected.");
+ print_frame_label_vars (selected_frame, 0, gdb_stdout);
}
-static int
-print_frame_arg_vars (frame, stream)
- register FRAME frame;
- register FILE *stream;
+static void
+print_frame_arg_vars (fi, stream)
+ register struct frame_info *fi;
+ register GDB_FILE *stream;
{
- struct symbol *func = get_frame_function (frame);
+ struct symbol *func = get_frame_function (fi);
register struct block *b;
int nsyms;
register int i;
if (func == 0)
{
fprintf_filtered (stream, "No symbol table info available.\n");
- fflush (stream);
- return 0;
+ return;
}
b = SYMBOL_BLOCK_VALUE (func);
for (i = 0; i < nsyms; i++)
{
sym = BLOCK_SYM (b, i);
- if (SYMBOL_CLASS (sym) == LOC_ARG
- || SYMBOL_CLASS (sym) == LOC_LOCAL_ARG
- || SYMBOL_CLASS (sym) == LOC_REF_ARG
- || SYMBOL_CLASS (sym) == LOC_REGPARM)
+ switch (SYMBOL_CLASS (sym))
{
+ 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;
- fprint_symbol (stream, SYMBOL_NAME (sym));
+ fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream);
fputs_filtered (" = ", stream);
- /* We have to look up the symbol because arguments often have
- two entries (one a parameter, one a register) and the one
- we want is the register, which lookup_symbol will find for
- us. */
+
+ /* 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, frame, stream);
+ print_variable_value (sym2, fi, stream);
fprintf_filtered (stream, "\n");
- fflush (stream);
+ break;
+
+ default:
+ /* Don't worry about things which aren't arguments. */
+ break;
}
}
if (!values_printed)
{
fprintf_filtered (stream, "No arguments.\n");
- fflush (stream);
}
-
- return 1;
}
static void
-args_info ()
+args_info (ignore, from_tty)
+ char *ignore;
+ int from_tty;
{
- if (!target_has_stack)
- error ("No stack.");
- print_frame_arg_vars (selected_frame, stdout);
+ if (!selected_frame)
+ error ("No frame selected.");
+ print_frame_arg_vars (selected_frame, gdb_stdout);
}
\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;
+select_frame (fi, level)
+ struct frame_info *fi;
int level;
{
- selected_frame = frame;
+ register struct symtab *s;
+
+ selected_frame = fi;
selected_frame_level = level;
- /* Ensure that symbols for this frame are readin. */
- if (frame)
- find_pc_symtab (get_frame_info (frame)->pc);
+
+ /* 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);
+ }
+ }
}
/* Store the selected frame and its level into *FRAMEP and *LEVELP.
void
record_selected_frame (frameaddrp, levelp)
- FRAME_ADDR *frameaddrp;
+ CORE_ADDR *frameaddrp;
int *levelp;
{
- *frameaddrp = selected_frame ? FRAME_FP (selected_frame) : NULL;
+ *frameaddrp = selected_frame ? selected_frame->frame : 0;
*levelp = selected_frame_level;
}
but the final value of *LEVEL_OFFSET_PTR is nonzero and indicates
how much farther the original request asked to go. */
-FRAME
+struct frame_info *
find_relative_frame (frame, level_offset_ptr)
- register FRAME frame;
- register int* level_offset_ptr;
+ 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;
/* 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;
{
- register FRAME frame, frame1;
+ register struct frame_info *frame, *frame1;
unsigned int level = 0;
if (!target_has_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. */
+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;
int from_tty;
{
- register FRAME frame;
+ register struct frame_info *fi;
int count = 1, count1;
if (count_exp)
count = parse_and_eval_address (count_exp);
count1 = count;
- if (!target_has_stack)
+ if (target_has_stack == 0 || selected_frame == 0)
error ("No stack.");
- frame = find_relative_frame (selected_frame, &count1);
+ 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
/* 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;
int from_tty;
{
- register FRAME frame;
+ register struct frame_info *frame;
int count = -1, count1;
if (count_exp)
count = - parse_and_eval_address (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);
}
int from_tty;
{
struct symbol *thisfun;
- FRAME_ADDR selected_frame_addr;
+ CORE_ADDR selected_frame_addr;
CORE_ADDR selected_frame_pc;
- FRAME frame;
+ 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 = (get_frame_info (selected_frame))->pc;
+ 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? "))
a POP_FRAME. The pc comparison makes this work even if the
selected frame shares its fp with another frame. */
- while ( selected_frame_addr != FRAME_FP (frame = get_current_frame())
- || selected_frame_pc != (get_frame_info (frame))->pc )
+ 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 interactive, print the frame that is now current. */
if (from_tty)
frame_command ("0", 1);
+ else
+ select_frame_command ("0", 0);
+}
+
+/* Gets the language of the current frame. */
+
+enum language
+get_frame_language()
+{
+ 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
"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_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