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-rw-r--r--gnu/usr.bin/gdb/stack.c960
1 files changed, 0 insertions, 960 deletions
diff --git a/gnu/usr.bin/gdb/stack.c b/gnu/usr.bin/gdb/stack.c
deleted file mode 100644
index 91218aa..0000000
--- a/gnu/usr.bin/gdb/stack.c
+++ /dev/null
@@ -1,960 +0,0 @@
-/*-
- * This code is derived from software copyrighted by the Free Software
- * Foundation.
- *
- * Modified 1991 by Donn Seeley at UUNET Technologies, Inc.
- * Modified 1990 by Van Jacobson at Lawrence Berkeley Laboratory.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)stack.c 6.3 (Berkeley) 5/8/91";
-#endif /* not lint */
-
-/* Print and select stack frames for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
-
-This file is part of GDB.
-
-GDB 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.
-
-GDB 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. */
-
-/* modified by rjc Thu Nov 1 16:46:57 1990, fixed return_command so that
- it can return values, it still has problems when running on pmax,
- cannot write register 65 */
-
-#include <stdio.h>
-
-#include "defs.h"
-#include "param.h"
-#include "symtab.h"
-#include "frame.h"
-#include "value.h"
-
-
-/* Thie "selected" stack frame is used by default for local and arg access.
- May be zero, for no selected frame. */
-
-FRAME selected_frame;
-
-/* Level of the selected frame:
- 0 for innermost, 1 for its caller, ...
- or -1 for frame specified by address with no defined level. */
-
-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. */
-
-int frame_file_full_name = 0;
-
-static void select_calling_frame ();
-
-void print_frame_info ();
-
-/* Print a stack frame briefly. FRAME should be the frame id
- 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. */
-
-static void
-print_stack_frame (frame, level, source)
- FRAME frame;
- int level;
- int source;
-{
- struct frame_info *fi;
-
- fi = get_frame_info (frame);
-
- print_frame_info (fi, level, source, 1);
-}
-
-/* Flag which will indicate when the frame has been changed
- by and "up" or "down" command. */
-static int frame_changed;
-
-void
-print_frame_info (fi, level, source, args)
- struct frame_info *fi;
- register int level;
- int source;
- int args;
-{
- struct symtab_and_line sal;
- struct symbol *func;
- register char *funname = 0;
- int numargs;
- struct partial_symtab *pst;
-
- /* 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)
- {
- /* Abbreviated information. */
- char *fname;
-
- if (!find_pc_partial_function (fi->pc, &fname, 0))
- fname = "??";
-
- printf_filtered ("#%-2d ", level);
- printf_filtered ("0x%x in ", fi->pc);
-
- fputs_demangled(fname, stdout, -1);
- fputs_filtered(" (...)\n", stdout);
-
- return;
- }
-
- sal = find_pc_line (fi->pc, fi->next_frame);
- 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).
-
- So look in the misc_function_vector 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
- > BLOCK_START (SYMBOL_BLOCK_VALUE (func))))
- {
- /* In this case we have no way of knowing the source file
- and line number, so don't print them. */
- sal.symtab = 0;
- /* We also don't know anything about the function besides
- its address and name. */
- func = 0;
- funname = misc_function_vector[misc_index].name;
- }
- else
- funname = SYMBOL_NAME (func);
- }
- else
- {
- register int misc_index = find_pc_misc_function (fi->pc);
- if (misc_index >= 0)
- funname = misc_function_vector[misc_index].name;
- }
-
- if (frame_changed || source >= 0 || !sal.symtab)
- {
- if (level >= 0)
- printf_filtered ("#%-2d ", level);
- else if (frame_changed)
- printf ("#%-2d ", 0);
- if (fi->pc != sal.pc || !sal.symtab)
- printf_filtered ("0x%x in ", fi->pc);
- fputs_demangled(funname ? funname : "??", stdout, -1);
- printf_filtered(" (");
- if (args)
- {
- if (func)
- numargs = -1;
- else
- FRAME_NUM_ARGS (numargs, fi);
-
- print_frame_args (func, fi, numargs, stdout);
- }
- printf_filtered (")");
- if (sal.symtab)
- printf_filtered (" (%s line %d)", sal.symtab->filename, sal.line);
- printf_filtered ("\n");
- }
-
- if ((frame_changed || source != 0) && 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);
- if (!done)
- {
- if (mid_statement)
- printf_filtered ("0x%x\t", fi->pc);
- print_source_lines (sal.symtab, sal.line, sal.line + 1, 1);
- }
- current_source_line = max (sal.line - 5, 1);
- }
- frame_changed = 0;
- 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
-extern FRAME setup_arbitrary_frame ();
-#endif
-
-/*
- * Read a frame specification in whatever the appropriate format is.
- */
-static FRAME
-parse_frame_specification (frame_exp)
- char *frame_exp;
-{
- int numargs = 0;
- int arg1, arg2;
-
- 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++)
- ;
-
- if (*frame_exp)
- {
- numargs = 1;
- addr_string = savestring(frame_exp, p - frame_exp);
-
- {
- tmp_cleanup = make_cleanup (free, addr_string);
- arg1 = parse_and_eval_address (addr_string);
- do_cleanups (tmp_cleanup);
- }
-
- while (*p == ' ') p++;
-
- if (*p)
- {
- numargs = 2;
- arg2 = parse_and_eval_address (p);
- }
- }
- }
-
- switch (numargs)
- {
- case 0:
- return selected_frame;
- /* NOTREACHED */
- case 1:
- {
- int level = arg1;
- FRAME fid = find_relative_frame (get_current_frame (), &level);
- FRAME tfid;
-
- if (level == 0)
- /* find_relative_frame was successful */
- return fid;
-
- /* 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 = get_prev_frame (fid))
- ;
-
- if (fid)
- while ((tfid = get_prev_frame (fid)) &&
- (FRAME_FP (tfid) == arg1))
- 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
- }
- /* NOTREACHED */
- case 2:
- /* Must be addresses */
-#ifndef FRAME_SPECIFICATION_DYADIC
- error ("Incorrect number of args in frame specification");
-#else
- return setup_arbitrary_frame (arg1, arg2);
-#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 Frame_unknown
- instead of guessing (this happens on the VAX, 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 frame;
- struct frame_info *fi;
- struct frame_saved_regs fsr;
- struct symtab_and_line sal;
- struct symbol *func;
- FRAME calling_frame;
- int i, count;
- char *funname = 0;
-
- if (!(have_inferior_p () || have_core_file_p ()))
- error ("No inferior or core file.");
-
- frame = parse_frame_specification (addr_exp);
- if (!frame)
- 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);
- if (func)
- funname = SYMBOL_NAME (func);
- else
- {
- register int misc_index = find_pc_misc_function (fi->pc);
- if (misc_index >= 0)
- funname = misc_function_vector[misc_index].name;
- }
- calling_frame = get_prev_frame (frame);
-
- 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);
- else
- printf ("Stack frame at 0x%x:\n pc = 0x%x",
- FRAME_FP(frame), fi->pc);
-
- if (funname)
- printf (" in %s", funname);
- 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");
-
- {
- /* Address of the argument list for this frame, or Frame_unknown. */
- CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi);
- /* Number of args for this frame, or -1 if unknown. */
- int numargs;
-
- if (arg_list != Frame_unknown)
- {
- printf (" Arglist at 0x%x,", arg_list);
-
- FRAME_NUM_ARGS (numargs, fi);
- if (numargs < 0)
- printf (" args: ");
- else if (numargs == 0)
- printf (" no args.");
- else if (numargs == 1)
- printf (" 1 arg: ");
- else
- printf (" %d args: ", numargs);
- print_frame_args (func, fi, numargs, stdout);
- printf ("\n");
- }
- }
-
- /* The sp is special; what's returned isn't the save address, but
- actually the value of the previous frame's sp. */
- printf (" Previous frame's sp is 0x%x\n", fsr.regs[SP_REGNUM]);
- count = 0;
- for (i = 0; i < NUM_REGS; i++)
- if (fsr.regs[i] && i != SP_REGNUM)
- {
- if (count % 4 != 0)
- printf (", ");
- else
- {
- if (count == 0)
- printf (" Saved registers:");
- printf ("\n ");
- }
- printf ("%s at 0x%x", reg_names[i], fsr.regs[i]);
- count++;
- }
- if (count)
- printf ("\n");
-}
-
-#if 0
-/* Set a limit on the number of frames printed by default in a
- backtrace. */
-
-static int backtrace_limit;
-
-static void
-set_backtrace_limit_command (count_exp, from_tty)
- char *count_exp;
- int from_tty;
-{
- int count = parse_and_eval_address (count_exp);
-
- if (count < 0)
- error ("Negative argument not meaningful as backtrace limit.");
-
- backtrace_limit = count;
-}
-
-static void
-backtrace_limit_info (arg, from_tty)
- char *arg;
- int from_tty;
-{
- if (arg)
- error ("\"Info backtrace-limit\" takes no arguments.");
-
- printf ("Backtrace limit: %d.\n", backtrace_limit);
-}
-#endif
-
-/* Print briefly all stack frames or just the innermost COUNT frames. */
-
-static void
-backtrace_command (count_exp)
- char *count_exp;
-{
- struct frame_info *fi;
- register int count;
- register FRAME frame;
- register int i;
- register FRAME trailing;
- register int trailing_level;
-
- /* 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 ();
- trailing_level = 0;
- if (count_exp)
- {
- count = parse_and_eval_address (count_exp);
- if (count < 0)
- {
- FRAME current;
-
- count = -count;
-
- current = trailing;
- while (current && count--)
- current = get_prev_frame (current);
-
- /* Will stop when CURRENT reaches the top of the stack. TRAILING
- will be COUNT below it. */
- while (current)
- {
- trailing = get_prev_frame (trailing);
- current = get_prev_frame (current);
- trailing_level++;
- }
-
- count = -1;
- }
- }
- else
- count = -1;
-
- for (i = 0, frame = trailing;
- frame && count--;
- i++, frame = get_prev_frame (frame))
- {
- QUIT;
- fi = get_frame_info (frame);
- print_frame_info (fi, trailing_level + i, 0, 1);
- }
-
- /* If we've stopped before the end, mention that. */
- if (frame)
- printf_filtered ("(More stack frames follow...)\n");
-}
-
-/* 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 (b, frame, stream)
- struct block *b;
- register FRAME frame;
- register 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)
- {
- values_printed = 1;
- fputs_filtered (SYMBOL_NAME (sym), stream);
- fputs_filtered (" = ", stream);
- print_variable_value (sym, frame, stream);
- fprintf_filtered (stream, "\n");
- fflush (stream);
- }
- }
- return values_printed;
-}
-
-/* Print on STREAM all the local variables in frame FRAME,
- including all the blocks active in that frame
- at its current pc.
-
- Returns 1 if the job was done,
- or 0 if nothing was printed because we have no info
- on the function running in FRAME. */
-
-static int
-print_frame_local_vars (frame, stream)
- register FRAME frame;
- register FILE *stream;
-{
- register struct block *block = get_frame_block (frame);
- register int values_printed = 0;
-
- if (block == 0)
- {
- fprintf_filtered (stream, "No symbol table info available.\n");
- fflush (stream);
- return 0;
- }
-
- while (block != 0)
- {
- if (print_block_frame_locals (block, frame, 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. */
- if (BLOCK_FUNCTION (block))
- break;
- block = BLOCK_SUPERBLOCK (block);
- }
-
- if (!values_printed)
- {
- fprintf_filtered (stream, "No locals.\n");
- fflush (stream);
- }
-
- return 1;
-}
-
-static void
-locals_info ()
-{
- if (!have_inferior_p () && !have_core_file_p ())
- error ("No inferior or core file.");
-
- print_frame_local_vars (selected_frame, stdout);
-}
-
-static int
-print_frame_arg_vars (frame, stream)
- register FRAME frame;
- register FILE *stream;
-{
- struct symbol *func = get_frame_function (frame);
- register struct block *b;
- int nsyms;
- register int i;
- register struct symbol *sym;
- register int values_printed = 0;
-
- if (func == 0)
- {
- fprintf_filtered (stream, "No symbol table info available.\n");
- fflush (stream);
- return 0;
- }
-
- 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_REF_ARG
- || SYMBOL_CLASS (sym) == LOC_REGPARM)
- {
- values_printed = 1;
- fputs_filtered (SYMBOL_NAME (sym), stream);
- fputs_filtered (" = ", stream);
- print_variable_value (sym, 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 (!have_inferior_p () && !have_core_file_p ())
- error ("No inferior or core file.");
- print_frame_arg_vars (selected_frame, stdout);
-}
-
-/* Select frame FRAME, 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;
-{
- selected_frame = frame;
- selected_frame_level = level;
- /* Ensure that symbols for this frame are readin. */
- if (frame)
- find_pc_symtab (get_frame_info (frame)->pc);
-}
-
-/* Store the selected frame and its level into *FRAMEP and *LEVELP. */
-
-void
-record_selected_frame (frameaddrp, levelp)
- FRAME_ADDR *frameaddrp;
- int *levelp;
-{
- *frameaddrp = FRAME_FP (selected_frame);
- *levelp = selected_frame_level;
-}
-
-/* Return the symbol-block in which the selected frame is executing.
- Can return zero under various legitimate circumstances. */
-
-struct block *
-get_selected_block ()
-{
- if (!have_inferior_p () && !have_core_file_p ())
- return 0;
-
- if (!selected_frame)
- return get_current_block ();
- return get_frame_block (selected_frame);
-}
-
-/* Find a frame a certain number of levels away from FRAME.
- LEVEL_OFFSET_PTR points to an int containing the number of levels.
- Positive means go to earlier frames (up); negative, the reverse.
- The int that contains the number of levels is counted toward
- zero as the frames for those levels are found.
- If the top or bottom frame is reached, that frame is returned,
- 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;
-{
- register FRAME prev;
- register FRAME frame1, frame2;
-
- /* Going up is simple: just do get_prev_frame enough times
- or until initial frame is reached. */
- while (*level_offset_ptr > 0)
- {
- prev = get_prev_frame (frame);
- if (prev == 0)
- break;
- (*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. */
- 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;
- }
- return frame;
-}
-
-/* The "frame" command. With no arg, print selected frame briefly.
- 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
- frame expressions. */
-
-static void
-frame_command (level_exp, from_tty)
- char *level_exp;
- int from_tty;
-{
- register FRAME frame, frame1;
- unsigned int level = 0;
-
- if (!have_inferior_p () && ! have_core_file_p ())
- error ("No inferior or core file.");
-
- frame = parse_frame_specification (level_exp);
-
- for (frame1 = get_prev_frame (0);
- frame1 && frame1 != frame;
- frame1 = get_prev_frame (frame1))
- level++;
-
- if (!frame1)
- level = 0;
-
- frame_changed = level;
- select_frame (frame, level);
-
- if (!from_tty)
- return;
-
- 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. */
-
-static void
-up_command (count_exp)
- char *count_exp;
-{
- register FRAME frame;
- int count = 1, count1;
- if (count_exp)
- count = parse_and_eval_address (count_exp);
- count1 = count;
-
- if (!have_inferior_p () && !have_core_file_p ())
- error ("No inferior or core file.");
-
- frame = 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);
-
- print_stack_frame (selected_frame, selected_frame_level, 1);
- frame_changed++;
-}
-
-/* Select the frame down one or COUNT stack levels
- from the previously selected frame, and print it briefly. */
-
-static void
-down_command (count_exp)
- char *count_exp;
-{
- register FRAME frame;
- int count = -1, count1;
- if (count_exp)
- count = - parse_and_eval_address (count_exp);
- count1 = count;
-
- frame = find_relative_frame (selected_frame, &count1);
- if (count1 != 0 && count_exp == 0)
- 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);
- frame_changed--;
-}
-
-static void
-return_command (retval_exp, from_tty)
- char *retval_exp;
- int from_tty;
-{
- value return_value;
- struct symbol *thisfun = get_frame_function (selected_frame);
- FRAME_ADDR selected_frame_addr = FRAME_FP (selected_frame);
-
- /* If interactive, require confirmation. */
-
- if (from_tty)
- {
- if (thisfun != 0)
- {
- if (!query ("Make %s return now? ", SYMBOL_NAME (thisfun)))
- 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. We
- use this method because the selected_frame is not valid after
- a POP_FRAME. Note that this will not work if the selected frame
- shares it's fp with another frame. */
-
- while (selected_frame_addr != FRAME_FP (get_current_frame()))
- POP_FRAME;
-
- /* get the return value while still in this frame */
- if (retval_exp)
- return_value = parse_and_eval (retval_exp);
-
- /* Then pop that frame. */
- POP_FRAME;
-
- /* Store the return value if there was one */
-
- if (retval_exp)
- set_return_value (return_value);
-
- /* If interactive, print the frame that is now current. */
-
- if (from_tty)
- frame_command ("0", 1);
-}
-
-extern struct cmd_list_element *setlist;
-
-void
-_initialize_stack ()
-{
-#if 0
- backtrace_limit = 30;
-#endif
-
- add_com ("return", class_stack, return_command,
- "Make selected stack frame return to its caller.\n\
-Control remains in the debugger, but when you continue\n\
-execution will resume in the frame above the one now selected.\n\
-If an argument is given, it is an expression for the value to return.");
-
- add_com ("up", class_stack, up_command,
- "Select and print stack frame that called this one.\n\
-An argument says how many frames up to go.");
-
- add_com ("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 ("frame", class_stack, frame_command,
- "Select and print a stack frame.\n\
-With no argument, print the selected stack frame. (See also \"info frame\").\n\
-An argument specifies the frame to select.\n\
-It can be a stack frame number or the address of the frame.\n\
-With argument, nothing is printed if input is coming from\n\
-a command file or a user-defined command.");
-
- add_com_alias ("f", "frame", class_stack, 1);
-
- 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.");
- add_com_alias ("bt", "backtrace", class_stack, 0);
- add_com_alias ("where", "backtrace", class_alias, 0);
- add_info ("stack", backtrace_command,
- "Backtrace of the stack, or innermost COUNT frames.");
- add_info_alias ("s", "stack", 1);
- add_info ("frame", frame_info,
- "All about selected stack frame, or frame at ADDR.");
- add_info_alias ("f", "frame", 1);
- add_info ("locals", locals_info,
- "Local variables of current stack frame.");
- add_info ("args", args_info,
- "Argument variables of current stack frame.");
-
-#if 0
- add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command,
- "Specify maximum number of frames for \"backtrace\" to print by default.",
- &setlist);
- add_info ("backtrace-limit", backtrace_limit_info,
- "The maximum number of frames for \"backtrace\" to print by default.");
-#endif
-}
-
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