diff options
Diffstat (limited to 'gdb/stack.c')
| -rw-r--r-- | gdb/stack.c | 2016 |
1 files changed, 0 insertions, 2016 deletions
diff --git a/gdb/stack.c b/gdb/stack.c deleted file mode 100644 index e0bf7dd..0000000 --- a/gdb/stack.c +++ /dev/null @@ -1,2016 +0,0 @@ -/* Print and select stack frames for GDB, the GNU debugger. - Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 1998 - 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 -(at your option) any later version. - -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 this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include <ctype.h> -#include "defs.h" -#include "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 "gdbcore.h" -#include "target.h" -#include "breakpoint.h" -#include "demangle.h" -#include "inferior.h" -#include "annotate.h" -#include "symfile.h" -#include "objfiles.h" - -/* Prototypes for exported functions. */ - -void args_info PARAMS ((char *, int)); - -void locals_info PARAMS ((char *, int)); - -void (*selected_frame_level_changed_hook) PARAMS ((int)); - -void _initialize_stack PARAMS ((void)); - -/* Prototypes for local functions. */ - -static void return_command PARAMS ((char *, int)); - -static void down_command PARAMS ((char *, int)); - -static void down_silently_base PARAMS ((char *)); - -static void down_silently_command PARAMS ((char *, int)); - -static void up_command PARAMS ((char *, int)); - -static void up_silently_base PARAMS ((char *)); - -static void up_silently_command PARAMS ((char *, int)); - -void frame_command PARAMS ((char *, int)); - -static void select_frame_command PARAMS ((char *, int)); - -static void print_frame_arg_vars PARAMS ((struct frame_info *, GDB_FILE *)); - -static void catch_info PARAMS ((char *, int)); - -static void args_plus_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 *, - int, - 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 *, - int, - GDB_FILE *)); - -static void print_frame_info_base PARAMS ((struct frame_info *, int, int, int)); - -static void print_stack_frame_base PARAMS ((struct frame_info *, int, int)); - -static void backtrace_command PARAMS ((char *, int)); - -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 int lines_to_list; /* # of lines "list" command shows by default */ - -/* The "selected" stack frame is used by default for local and arg access. - May be zero, for no selected frame. */ - -struct frame_info *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; - -/* 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 annotation_level = 0; - - -struct print_stack_frame_args { - struct frame_info *fi; - int level; - int source; - int args; -}; - -static int print_stack_frame_base_stub PARAMS ((char *)); - -/* Show and print the frame arguments. - Pass the args the way catch_errors wants them. */ -static int -show_and_print_stack_frame_stub (args) - char *args; -{ - struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; - - /* Reversed order of these so tuiDo() doesn't occur - * in the middle of "Breakpoint 1 ... [location]" printing = RT - */ - if (tui_version) - print_frame_info_base (p->fi, p->level, p->source, p->args); - print_frame_info (p->fi, p->level, p->source, p->args); - - return 0; -} - -/* Show or print the frame arguments. - Pass the args the way catch_errors wants them. */ -static int -print_stack_frame_stub (args) - char *args; -{ - struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; - - if (tui_version) - print_frame_info (p->fi, p->level, p->source, p->args); - else - print_frame_info_base (p->fi, p->level, p->source, p->args); - return 0; -} - -/* Print a stack frame briefly. FRAME_INFI should be the frame info - and LEVEL should be its level in the stack (or -1 for level not defined). - -/* Pass the args the way catch_errors wants them. */ -static int -print_stack_frame_base_stub (args) - char *args; -{ - struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; - - print_frame_info_base (p->fi, p->level, p->source, p->args); - return 0; -} - -/* print the frame arguments to the terminal. - Pass the args the way catch_errors wants them. */ -static int -print_only_stack_frame_stub (args) - char *args; -{ - struct print_stack_frame_args *p = (struct print_stack_frame_args *)args; - - print_frame_info_base (p->fi, p->level, p->source, p->args); - return 0; -} - -/* Print a stack frame briefly. FRAME_INFI should be the frame info - and LEVEL should be its level in the stack (or -1 for level not defined). - This prints the level, the function executing, the arguments, - and the file name and line number. - If the pc is not at the beginning of the source line, - the actual pc is printed at the beginning. - - If SOURCE is 1, print the source line as well. - If SOURCE is -1, print ONLY the source line. */ - -static void -print_stack_frame_base (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_ALL); -} - -/* Show and print a stack frame briefly. FRAME_INFI should be the frame info - and LEVEL should be its level in the stack (or -1 for level not defined). - This prints the level, the function executing, the arguments, - and the file name and line number. - If the pc is not at the beginning of the source line, - the actual pc is printed at the beginning. - - If SOURCE is 1, print the source line as well. - If SOURCE is -1, print ONLY the source line. */ - -void -show_and_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 (show_and_print_stack_frame_stub, (char *)&args, "", RETURN_MASK_ALL); -} - - -/* Show or print a stack frame briefly. FRAME_INFI should be the frame info - and LEVEL should be its level in the stack (or -1 for level not defined). - This prints the level, the function executing, the arguments, - and the file name and line number. - If the pc is not at the beginning of the source line, - the actual pc is printed at the beginning. - - If SOURCE is 1, print the source line as well. - If SOURCE is -1, print ONLY the source line. */ - -void -print_stack_frame (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_ALL); -} - -/* Print a stack frame briefly. FRAME_INFI should be the frame info - and LEVEL should be its level in the stack (or -1 for level not defined). - This prints the level, the function executing, the arguments, - and the file name and line number. - If the pc is not at the beginning of the source line, - the actual pc is printed at the beginning. - - If SOURCE is 1, print the source line as well. - If SOURCE is -1, print ONLY the source line. */ - -void -print_only_stack_frame (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_only_stack_frame_stub, - (char *)&args, "", RETURN_MASK_ALL); -} - -struct print_args_args { - struct symbol *func; - struct frame_info *fi; -}; - -static int print_args_stub PARAMS ((char *)); - -/* 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; -} - -/* Print information about a frame for frame "fi" at level "level". - * Used in "where" output, also used to emit breakpoint or step messages. - * LEVEL is the level of the frame, or -1 if it is the innermost frame - * but we don't want to print the level. - * The meaning of the SOURCE argument is: - * -1: Print only source line - * 0: Print only location - * 1: Print location and source line - */ - -static void -print_frame_info_base (fi, level, source, args) - struct frame_info *fi; - int level; - int source; - int args; -{ - struct symtab_and_line sal; - struct symbol *func; - register char *funname = 0; - enum language funlang = language_unknown; - -#if 0 - char buf[MAX_REGISTER_RAW_SIZE]; - CORE_ADDR sp; - - /* On the 68k, this spends too much time in m68k_find_saved_regs. */ - - /* Get the value of SP_REGNUM relative to the frame. */ - get_saved_register (buf, (int *)NULL, (CORE_ADDR *)NULL, - FRAME_INFO_ID (fi), SP_REGNUM, (enum lval_type *)NULL); - sp = extract_address (buf, REGISTER_RAW_SIZE (SP_REGNUM)); - - /* This is not a perfect test, because if a function alloca's some - memory, puts some code there, and then jumps into it, then the test - will succeed even though there is no call dummy. Probably best is - to check for a bp_call_dummy breakpoint. */ - if (PC_IN_CALL_DUMMY (fi->pc, sp, fi->frame)) -#else - if (frame_in_dummy (fi)) -#endif - { - annotate_frame_begin (level == -1 ? 0 : level, fi->pc); - - /* Do this regardless of SOURCE because we don't have any source - to list for this frame. */ - if (level >= 0) - printf_filtered ("#%-2d ", level); - annotate_function_call (); - printf_filtered ("<function called from gdb>\n"); - annotate_frame_end (); - return; - } - if (fi->signal_handler_caller) - { - annotate_frame_begin (level == -1 ? 0 : level, fi->pc); - - /* Do this regardless of SOURCE because we don't have any source - to list for this frame. */ - if (level >= 0) - printf_filtered ("#%-2d ", level); - annotate_signal_handler_caller (); - printf_filtered ("<signal handler called>\n"); - annotate_frame_end (); - return; - } - - /* 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) - { - /* In certain pathological cases, the symtabs give the wrong - function (when we are in the first function in a file which - is compiled without debugging symbols, the previous function - is compiled with debugging symbols, and the "foo.o" symbol - that is supposed to tell us where the file with debugging symbols - ends has been truncated by ar because it is longer than 15 - characters). This also occurs if the user uses asm() to create - a function but not stabs for it (in a file compiled -g). - - So look in the minimal symbol tables as well, and if it comes - up with a larger address for the function use that instead. - I don't think this can ever cause any problems; there shouldn't - be any minimal symbols in the middle of a function; if this is - ever changed many parts of GDB will need to be changed (and we'll - create a find_pc_minimal_function or some such). */ - - struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); - if (msymbol != NULL - && (SYMBOL_VALUE_ADDRESS (msymbol) - > BLOCK_START (SYMBOL_BLOCK_VALUE (func)))) - { -#if 0 - /* There is no particular reason to think the line number - information is wrong. Someone might have just put in - a label with asm() but left the line numbers alone. */ - /* In this case we have no way of knowing the source file - and line number, so don't print them. */ - sal.symtab = 0; -#endif - /* We also don't know anything about the function besides - its address and name. */ - func = 0; - funname = SYMBOL_NAME (msymbol); - funlang = SYMBOL_LANGUAGE (msymbol); - } - else - { - /* I'd like to use SYMBOL_SOURCE_NAME() here, to display - * the demangled name that we already have stored in - * the symbol table, but we stored a version with - * DMGL_PARAMS turned on, and here we don't want - * to display parameters. So call the demangler again, - * with DMGL_ANSI only. RT - * (Yes, I know that printf_symbol_filtered() will - * again try to demangle the name on the fly, but - * the issue is that if cplus_demangle() fails here, - * it'll fail there too. So we want to catch the failure - * ("demangled==NULL" case below) here, while we still - * have our hands on the function symbol.) - */ - char * demangled; - funname = SYMBOL_NAME (func); - funlang = SYMBOL_LANGUAGE (func); - if (funlang == language_cplus) { - demangled = cplus_demangle (funname, DMGL_ANSI); - if (demangled == NULL) - /* If the demangler fails, try the demangled name - * from the symbol table. This'll have parameters, - * but that's preferable to diplaying a mangled name. - */ - funname = SYMBOL_SOURCE_NAME (func); - } - } - } - else - { - struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); - if (msymbol != NULL) - { - funname = SYMBOL_NAME (msymbol); - funlang = SYMBOL_LANGUAGE (msymbol); - } - } - - 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) - { - 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 (" "); - annotate_frame_args (); - fputs_filtered (" (", gdb_stdout); - if (args) - { - struct print_args_args args; - args.fi = fi; - args.func = func; - catch_errors (print_args_stub, (char *)&args, "", RETURN_MASK_ALL); - QUIT; - } - printf_filtered (")"); - if (sal.symtab && sal.symtab->filename) - { - annotate_frame_source_begin (); - wrap_here (" "); - printf_filtered (" at "); - annotate_frame_source_file (); - printf_filtered ("%s", sal.symtab->filename); - annotate_frame_source_file_end (); - printf_filtered (":"); - annotate_frame_source_line (); - printf_filtered ("%d", sal.line); - 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 || (!sal.symtab || !sal.symtab->filename)) - { - char *lib = PC_SOLIB (fi->pc); - if (lib) - { - annotate_frame_where (); - wrap_here (" "); - printf_filtered (" from %s", lib); - } - } -#endif - printf_filtered ("\n"); - } - - if ((source != 0) && sal.symtab) - { - int done = 0; - int mid_statement = source < 0 && fi->pc != sal.pc; - if (annotation_level) - done = identify_source_line (sal.symtab, sal.line, mid_statement, - fi->pc); - if (!done) - { - if (addressprint && mid_statement && !tui_version) - { - 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 if (!tui_version) - print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); - } - current_source_line = max (sal.line - lines_to_list/2, 1); - } - if (source != 0) - set_default_breakpoint (1, fi->pc, sal.symtab, sal.line); - - annotate_frame_end (); - - gdb_flush (gdb_stdout); -} - - -void -stack_publish_stopped_with_no_frame() -{ - TUIDO(((TuiOpaqueFuncPtr)tuiUpdateOnEnd)); - - return; -} - -/* Show or print the frame info. If this is the tui, it will be shown in - the source display */ -void -print_frame_info(fi, level, source, args) - struct frame_info *fi; - register int level; - int source; - int args; -{ - if (!tui_version) - print_frame_info_base(fi, level, source, args); - else - { - if (fi && (frame_in_dummy(fi) || fi->signal_handler_caller)) - print_frame_info_base(fi, level, source, args); - else - { - TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi)); - } - } -} - -/* Show the frame info. If this is the tui, it will be shown in - the source display otherwise, nothing is done */ -void -show_stack_frame(fi) - struct frame_info *fi; -{ - TUIDO(((TuiOpaqueFuncPtr)tui_vShowFrameInfo, fi)); -} - - -/* 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). */ - -struct frame_info * -parse_frame_specification (frame_exp) - char *frame_exp; -{ - int numargs = 0; -#define MAXARGS 4 - CORE_ADDR args[MAXARGS]; - - if (frame_exp) - { - char *addr_string, *p; - struct cleanup *tmp_cleanup; - - while (*frame_exp == ' ') frame_exp++; - - while (*frame_exp) - { - if (numargs > MAXARGS) - error ("Too many args in frame specification"); - /* Parse an argument. */ - for (p = frame_exp; *p && *p != ' '; p++) - ; - addr_string = savestring(frame_exp, p - frame_exp); - - { - tmp_cleanup = make_cleanup (free, addr_string); - args[numargs++] = parse_and_eval_address (addr_string); - do_cleanups (tmp_cleanup); - } - - /* Skip spaces, move to possible next arg. */ - while (*p == ' ') p++; - frame_exp = p; - } - } - - switch (numargs) - { - case 0: - if (selected_frame == NULL) - error ("No selected frame."); - return selected_frame; - /* NOTREACHED */ - case 1: - { - 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 && fid->frame != args[0]; - fid = get_prev_frame (fid)) - ; - - if (fid) - while ((tfid = get_prev_frame (fid)) && - (tfid->frame == args[0])) - fid = tfid; - - /* We couldn't identify the frame as an existing frame, but - perhaps we can create one with a single argument. */ - } - - default: -#ifdef SETUP_ARBITRARY_FRAME - return SETUP_ARBITRARY_FRAME (numargs, args); -#else - /* 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 */ - } - /* NOTREACHED */ -} - -/* FRAME_ARGS_ADDRESS_CORRECT is just like FRAME_ARGS_ADDRESS except - that if it is unsure about the answer, it returns 0 - instead of guessing (this happens on the VAX and i960, for example). - - On most machines, we never have to guess about the args address, - so FRAME_ARGS_ADDRESS{,_CORRECT} are the same. */ -#if !defined (FRAME_ARGS_ADDRESS_CORRECT) -#define FRAME_ARGS_ADDRESS_CORRECT FRAME_ARGS_ADDRESS -#endif - -/* Print verbosely the selected frame or the frame at address ADDR. - This means absolutely all information in the frame is printed. */ - -static void -frame_info (addr_exp, from_tty) - char *addr_exp; - int from_tty; -{ - struct frame_info *fi; - struct symtab_and_line sal; - struct symbol *func; - 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 stack."); - - fi = parse_frame_specification (addr_exp); - if (fi == NULL) - error ("Invalid frame specified."); - - 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) - { - /* I'd like to use SYMBOL_SOURCE_NAME() here, to display - * the demangled name that we already have stored in - * the symbol table, but we stored a version with - * DMGL_PARAMS turned on, and here we don't want - * to display parameters. So call the demangler again, - * with DMGL_ANSI only. RT - * (Yes, I know that printf_symbol_filtered() will - * again try to demangle the name on the fly, but - * the issue is that if cplus_demangle() fails here, - * it'll fail there too. So we want to catch the failure - * ("demangled==NULL" case below) here, while we still - * have our hands on the function symbol.) - */ - char * demangled; - funname = SYMBOL_NAME (func); - funlang = SYMBOL_LANGUAGE (func); - if (funlang == language_cplus) - { - demangled = cplus_demangle (funname, DMGL_ANSI); - /* If the demangler fails, try the demangled name - * from the symbol table. This'll have parameters, - * but that's preferable to diplaying a mangled name. - */ - if (demangled == NULL) - funname = SYMBOL_SOURCE_NAME (func); - } - } - else - { - register struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (fi->pc); - if (msymbol != NULL) - { - funname = SYMBOL_NAME (msymbol); - funlang = SYMBOL_LANGUAGE (msymbol); - } - } - calling_frame_info = get_prev_frame (fi); - - if (!addr_exp && selected_frame_level >= 0) - { - 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 "); - print_address_numeric (fi->frame, 1, gdb_stdout); - printf_filtered (":\n"); - } - printf_filtered (" %s = ", REGISTER_NAME (PC_REGNUM)); - print_address_numeric (fi->pc, 1, gdb_stdout); - - wrap_here (" "); - if (funname) - { - printf_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 ", REGISTER_NAME (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) - { - printf_filtered (" caller of frame at "); - print_address_numeric (fi->next->frame, 1, gdb_stdout); - } - if (fi->next || calling_frame_info) - puts_filtered ("\n"); - if (s) - printf_filtered (" source language %s.\n", language_str (s->language)); - -#ifdef PRINT_EXTRA_FRAME_INFO - PRINT_EXTRA_FRAME_INFO (fi); -#endif - - { - /* Address of the argument list for this frame, or 0. */ - CORE_ADDR arg_list = FRAME_ARGS_ADDRESS_CORRECT (fi); - /* Number of args for this frame, or -1 if unknown. */ - int numargs; - - if (arg_list == 0) - printf_filtered (" Arglist at unknown address.\n"); - else - { - printf_filtered (" Arglist at "); - print_address_numeric (arg_list, 1, gdb_stdout); - printf_filtered (","); - - FRAME_NUM_ARGS (numargs, fi); - if (numargs < 0) - puts_filtered (" args: "); - else if (numargs == 0) - puts_filtered (" no args."); - else if (numargs == 1) - puts_filtered (" 1 arg: "); - else - printf_filtered (" %d args: ", numargs); - print_frame_args (func, fi, numargs, gdb_stdout); - puts_filtered ("\n"); - } - } - { - /* Address of the local variables for this frame, or 0. */ - CORE_ADDR arg_list = FRAME_LOCALS_ADDRESS (fi); - - if (arg_list == 0) - printf_filtered (" Locals at unknown address,"); - else - { - printf_filtered (" Locals at "); - print_address_numeric (arg_list, 1, gdb_stdout); - printf_filtered (","); - } - } - - FRAME_INIT_SAVED_REGS (fi); - if (fi->saved_regs != NULL) - { - /* The sp is special; what's returned isn't the save address, but - actually the value of the previous frame's sp. */ - printf_filtered (" Previous frame's sp is "); - print_address_numeric (fi->saved_regs[SP_REGNUM], 1, gdb_stdout); - printf_filtered ("\n"); - count = 0; - numregs = ARCH_NUM_REGS; - for (i = 0; i < numregs; i++) - if (fi->saved_regs[i] && i != SP_REGNUM) - { - if (count == 0) - puts_filtered (" Saved registers:\n "); - else - puts_filtered (","); - wrap_here (" "); - printf_filtered (" %s at ", REGISTER_NAME (i)); - print_address_numeric (fi->saved_regs[i], 1, gdb_stdout); - count++; - } - if (count) - puts_filtered ("\n"); - } - else - { - /* We could get some information about saved registers by - calling get_saved_register on each register. Which info goes - with which frame is necessarily lost, however, and I suspect - that the users don't care whether they get the info. */ - puts_filtered ("\n"); - } -} - -#if 0 -/* 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_unfiltered ("Backtrace limit: %d.\n", backtrace_limit); -} -#endif - -/* Print briefly all stack frames or just the innermost COUNT frames. */ - -static void -backtrace_command_1 (count_exp, show_locals, from_tty) - char *count_exp; - int show_locals; - int from_tty; -{ - struct frame_info *fi; - register int count; - register int i; - register struct frame_info *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 - 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) - { - struct frame_info *current; - - count = -count; - - current = trailing; - while (current && count--) - { - QUIT; - current = get_prev_frame (current); - } - - /* Will stop when CURRENT reaches the top of the stack. TRAILING - will be COUNT below it. */ - while (current) - { - QUIT; - trailing = get_prev_frame (trailing); - current = get_prev_frame (current); - trailing_level++; - } - - count = -1; - } - } - else - count = -1; - - if (info_verbose) - { - struct partial_symtab *ps; - - /* Read in symbols for all of the frames. Need to do this in - a separate pass so that "Reading in symbols for xxx" messages - don't screw up the appearance of the backtrace. Also - if people have strong opinions against reading symbols for - backtrace this may have to be an option. */ - i = count; - for (fi = trailing; - fi != NULL && i--; - fi = get_prev_frame (fi)) - { - QUIT; - ps = find_pc_psymtab (fi->pc); - if (ps) - PSYMTAB_TO_SYMTAB (ps); /* Force syms to come in */ - } - } - - for (i = 0, fi = trailing; - fi && count--; - i++, fi = get_prev_frame (fi)) - { - QUIT; - - /* Don't use print_stack_frame; if an error() occurs it probably - means further attempts to backtrace would fail (on the other - hand, perhaps the code does or could be fixed to make sure - the frame->prev field gets set to NULL in that case). */ - print_frame_info_base (fi, trailing_level + i, 0, 1); - if (show_locals) - print_frame_local_vars(fi, 1, gdb_stdout); - } - - /* If we've stopped before the end, mention that. */ - if (fi && from_tty) - printf_filtered ("(More stack frames follow...)\n"); -} - -static void -backtrace_command (arg, from_tty) - char *arg; - int from_tty; -{ - struct cleanup *old_chain = (struct cleanup *)NULL; - char **argv = (char **)NULL; - int argIndicatingFullTrace = (-1), totArgLen = 0, argc = 0; - char *argPtr = arg; - - if (arg != (char *)NULL) - { - int i; - - argv = buildargv(arg); - old_chain = make_cleanup(freeargv, (char *)argv); - argc = 0; - for (i = 0; (argv[i] != (char *)NULL); i++) - { - int j; - - for (j = 0; (j < strlen(argv[i])); j++) - argv[i][j] = tolower(argv[i][j]); - - if (argIndicatingFullTrace < 0 && subsetCompare(argv[i], "full")) - argIndicatingFullTrace = argc; - else - { - argc++; - totArgLen += strlen(argv[i]); - } - } - totArgLen += argc; - if (argIndicatingFullTrace >= 0) - { - if (totArgLen > 0) - { - argPtr = (char *)xmalloc(totArgLen + 1); - if (!argPtr) - nomem(0); - else - { - memset(argPtr, 0, totArgLen + 1); - for (i = 0; (i < (argc + 1)); i++) - { - if (i != argIndicatingFullTrace) - { - strcat(argPtr, argv[i]); - strcat(argPtr, " "); - } - } - } - } - else - argPtr = (char *)NULL; - } - } - - backtrace_command_1 (argPtr, (argIndicatingFullTrace >= 0), from_tty); - - if (argIndicatingFullTrace >= 0 && totArgLen > 0) - free(argPtr); - - if (old_chain) - do_cleanups(old_chain); -} - -static void -backtrace_full_command (arg, from_tty) - char *arg; - int from_tty; -{ - backtrace_command_1 (arg, 1, from_tty); -} - - -/* 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, fi, num_tabs, stream) - struct block *b; - register struct frame_info *fi; - int num_tabs; - register GDB_FILE *stream; -{ - int nsyms; - register int i, j; - register struct symbol *sym; - register int values_printed = 0; - - nsyms = BLOCK_NSYMS (b); - - for (i = 0; i < nsyms; i++) - { - sym = BLOCK_SYM (b, i); - switch (SYMBOL_CLASS (sym)) - { - case LOC_LOCAL: - case LOC_REGISTER: - case LOC_STATIC: - case LOC_BASEREG: - values_printed = 1; - for (j = 0; j < num_tabs; j++) - fputs_filtered("\t", stream); - fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); - fputs_filtered (" = ", stream); - print_variable_value (sym, fi, stream); - fprintf_filtered (stream, "\n"); - break; - - default: - /* Ignore symbols which are not locals. */ - break; - } - } - return values_printed; -} - -/* Same, but print labels. */ - -static int -print_block_frame_labels (b, have_default, stream) - struct block *b; - int *have_default; - register GDB_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 (STREQ (SYMBOL_NAME (sym), "default")) - { - if (*have_default) - continue; - *have_default = 1; - } - if (SYMBOL_CLASS (sym) == LOC_LABEL) - { - struct symtab_and_line sal; - sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); - values_printed = 1; - fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); - if (addressprint) - { - fprintf_filtered (stream, " "); - print_address_numeric (SYMBOL_VALUE_ADDRESS (sym), 1, stream); - } - fprintf_filtered (stream, " in file %s, line %d\n", - sal.symtab->filename, sal.line); - } - } - return values_printed; -} - -/* Print on STREAM all the local variables in frame FRAME, - 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 void -print_frame_local_vars (fi, num_tabs, stream) - register struct frame_info *fi; - register int num_tabs; - register GDB_FILE *stream; -{ - 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"); - return; - } - - while (block != 0) - { - if (print_block_frame_locals (block, fi, num_tabs, stream)) - values_printed = 1; - /* After handling the function's top-level block, stop. - Don't continue to its superblock, the block of - per-file symbols. */ - if (BLOCK_FUNCTION (block)) - break; - block = BLOCK_SUPERBLOCK (block); - } - - if (!values_printed) - { - fprintf_filtered (stream, "No locals.\n"); - } -} - -/* Same, but print labels. */ - -static void -print_frame_label_vars (fi, this_level_only, stream) - register struct frame_info *fi; - int this_level_only; - register GDB_FILE *stream; -{ - register struct blockvector *bl; - register struct block *block = get_frame_block (fi); - register int values_printed = 0; - int index, have_default = 0; - char *blocks_printed; - CORE_ADDR pc = fi->pc; - - if (block == 0) - { - fprintf_filtered (stream, "No symbol table info available.\n"); - return; - } - - bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); - blocks_printed = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); - memset (blocks_printed, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); - - while (block != 0) - { - CORE_ADDR end = BLOCK_END (block) - 4; - int last_index; - - if (bl != blockvector_for_pc (end, &index)) - error ("blockvector blotch"); - if (BLOCKVECTOR_BLOCK (bl, index) != block) - error ("blockvector botch"); - last_index = BLOCKVECTOR_NBLOCKS (bl); - index += 1; - - /* Don't print out blocks that have gone by. */ - while (index < last_index - && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) - index++; - - while (index < last_index - && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) - { - if (blocks_printed[index] == 0) - { - if (print_block_frame_labels (BLOCKVECTOR_BLOCK (bl, index), &have_default, stream)) - values_printed = 1; - blocks_printed[index] = 1; - } - index++; - } - if (have_default) - return; - if (values_printed && this_level_only) - return; - - /* After handling the function's top-level block, stop. - Don't continue to its superblock, the block of - per-file symbols. */ - if (BLOCK_FUNCTION (block)) - break; - block = BLOCK_SUPERBLOCK (block); - } - - if (!values_printed && !this_level_only) - { - fprintf_filtered (stream, "No catches.\n"); - } -} - -/* ARGSUSED */ -void -locals_info (args, from_tty) - char *args; - int from_tty; -{ - if (!selected_frame) - error ("No frame selected."); - print_frame_local_vars (selected_frame, 0, gdb_stdout); -} - -static void -catch_info (ignore, from_tty) - char *ignore; - int from_tty; -{ - struct symtab_and_line * sal; - - /* Check for target support for exception handling */ - sal = target_enable_exception_callback (EX_EVENT_CATCH, 1); - if (sal) - { - /* Currently not handling this */ - /* Ideally, here we should interact with the C++ runtime - system to find the list of active handlers, etc. */ - fprintf_filtered (gdb_stdout, "Info catch not supported with this target/compiler combination.\n"); -#if 0 - if (!selected_frame) - error ("No frame selected."); -#endif - } - else - { - /* Assume g++ compiled code -- old v 4.16 behaviour */ - if (!selected_frame) - error ("No frame selected."); - - print_frame_label_vars (selected_frame, 0, gdb_stdout); - } -} - -static void -print_frame_arg_vars (fi, stream) - register struct frame_info *fi; - register GDB_FILE *stream; -{ - struct symbol *func = get_frame_function (fi); - register struct block *b; - int nsyms; - register int i; - register struct symbol *sym, *sym2; - register int values_printed = 0; - - if (func == 0) - { - fprintf_filtered (stream, "No symbol table info available.\n"); - return; - } - - b = SYMBOL_BLOCK_VALUE (func); - nsyms = BLOCK_NSYMS (b); - - for (i = 0; i < nsyms; i++) - { - sym = BLOCK_SYM (b, i); - 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; - fputs_filtered (SYMBOL_SOURCE_NAME (sym), stream); - fputs_filtered (" = ", stream); - - /* We have to look up the symbol because arguments can have - two entries (one a parameter, one a local) and the one we - want is the local, which lookup_symbol will find for us. - This includes gcc1 (not gcc2) on the sparc when passing a - small structure and gcc2 when the argument type is float - and it is passed as a double and converted to float by - the prologue (in the latter case the type of the LOC_ARG - symbol is double and the type of the LOC_LOCAL symbol is - float). There are also LOC_ARG/LOC_REGISTER pairs which - are not combined in symbol-reading. */ - - sym2 = lookup_symbol (SYMBOL_NAME (sym), - b, VAR_NAMESPACE, (int *)NULL, (struct symtab **)NULL); - print_variable_value (sym2, fi, stream); - fprintf_filtered (stream, "\n"); - break; - - default: - /* Don't worry about things which aren't arguments. */ - break; - } - } - - if (!values_printed) - { - fprintf_filtered (stream, "No arguments.\n"); - } -} - -void -args_info (ignore, from_tty) - char *ignore; - int from_tty; -{ - if (!selected_frame) - error ("No frame selected."); - print_frame_arg_vars (selected_frame, gdb_stdout); -} - - -static void -args_plus_locals_info(ignore, from_tty) - char *ignore; - int from_tty; -{ - args_info(ignore, from_tty); - locals_info(ignore, from_tty); -} - - -/* 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 (fi, level) - struct frame_info *fi; - int level; -{ - register struct symtab *s; - - selected_frame = fi; - selected_frame_level = level; - if (selected_frame_level_changed_hook) - selected_frame_level_changed_hook (level); - - /* Ensure that symbols for this frame are read in. Also, determine the - source language of this frame, and switch to it if desired. */ - if (fi) - { - s = find_pc_symtab (fi->pc); - if (s - && s->language != current_language->la_language - && s->language != language_unknown - && language_mode == language_mode_auto) { - set_language(s->language); - } - /* elz: this if here fixes the problem with the pc not being displayed - in the tui asm layout, with no debug symbols. The value of s - would be 0 here, and select_source_symtab would abort the - command by calling the 'error' function*/ - if (s) - { - TUIDO(((TuiOpaqueFuncPtr)tui_vSelectSourceSymtab, s)); - } - } -} - - -/* Select frame FI, noting that its stack level is LEVEL. Also print - the stack frame and show the source if this is the tui version. */ -void -select_and_print_frame(fi, level) - struct frame_info *fi; - int level; -{ - select_frame(fi, level); - if (fi) - { - print_stack_frame(fi, level, 1); - TUIDO(((TuiOpaqueFuncPtr)tui_vCheckDataValues, fi)); - } -} - - -/* Select frame FI, noting that its stack level is LEVEL. Be silent if - not the TUI */ -void -select_and_maybe_print_frame(fi, level) - struct frame_info *fi; - int level; -{ - if (!tui_version) - select_frame(fi, level); - else - select_and_print_frame(fi, level); -} - - -/* 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) - CORE_ADDR *frameaddrp; - int *levelp; -{ - *frameaddrp = selected_frame ? selected_frame->frame : 0; - *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 (!target_has_stack) - 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. */ - -struct frame_info * -find_relative_frame (frame, level_offset_ptr) - register struct frame_info *frame; - register int *level_offset_ptr; -{ - 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. */ - while (*level_offset_ptr > 0) - { - prev = get_prev_frame (frame); - if (prev == 0) - break; - (*level_offset_ptr)--; - frame = prev; - } - /* Going down is just as simple. */ - if (*level_offset_ptr < 0) - { - while (*level_offset_ptr < 0) { - frame1 = get_next_frame (frame); - if (!frame1) - break; - frame = frame1; - (*level_offset_ptr)++; - } - } - return frame; -} - -/* 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 select it. See parse_frame_specification for more info on proper - frame expressions. */ - -/* ARGSUSED */ -static void -select_frame_command (level_exp, from_tty) - char *level_exp; - int from_tty; -{ - register struct frame_info *frame, *frame1; - unsigned int level = 0; - - if (!target_has_stack) - error ("No stack."); - - frame = parse_frame_specification (level_exp); - - /* 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); -} - -/* The "frame" command. With no arg, print selected frame briefly. - With arg, behaves like select_frame and then prints the selected - frame. */ - -void -frame_command (level_exp, from_tty) - char *level_exp; - int from_tty; -{ - select_frame_command (level_exp, from_tty); - show_and_print_stack_frame (selected_frame, selected_frame_level, 1); -} - -/* The XDB Compatibility command to print the current frame. */ - -void -current_frame_command (level_exp, from_tty) - char *level_exp; - int from_tty; -{ - if (target_has_stack == 0 || selected_frame == 0) - error ("No stack."); - print_only_stack_frame (selected_frame, selected_frame_level, 1); - } - -/* Select the frame up one or COUNT stack levels - from the previously selected frame, and print it briefly. */ - -/* ARGSUSED */ -static void -up_silently_base (count_exp) - char *count_exp; -{ - 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 == 0 || selected_frame == 0) - error ("No stack."); - - fi = find_relative_frame (selected_frame, &count1); - if (count1 != 0 && count_exp == 0) - error ("Initial frame selected; you cannot go up."); - select_frame (fi, selected_frame_level + count - count1); -} - -static void -up_silently_command (count_exp, from_tty) - char *count_exp; - int from_tty; -{ - up_silently_base(count_exp); - if (tui_version) - print_stack_frame (selected_frame, selected_frame_level, 1); -} - -static void -up_command (count_exp, from_tty) - char *count_exp; - int from_tty; -{ - up_silently_base (count_exp); - show_and_print_stack_frame (selected_frame, selected_frame_level, 1); -} - -/* Select the frame down one or COUNT stack levels - from the previously selected frame, and print it briefly. */ - -/* ARGSUSED */ -static void -down_silently_base (count_exp) - char *count_exp; -{ - 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) - { - - /* 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); -} - -/* ARGSUSED */ -static void -down_silently_command (count_exp, from_tty) - char *count_exp; - int from_tty; -{ - down_silently_base (count_exp); - if (tui_version) - print_stack_frame (selected_frame, selected_frame_level, 1); -} - -static void -down_command (count_exp, from_tty) - char *count_exp; - int from_tty; -{ - down_silently_base (count_exp); - show_and_print_stack_frame (selected_frame, selected_frame_level, 1); -} - -static void -return_command (retval_exp, from_tty) - char *retval_exp; - int from_tty; -{ - struct symbol *thisfun; - CORE_ADDR selected_frame_addr; - CORE_ADDR selected_frame_pc; - struct frame_info *frame; - value_ptr return_value = NULL; - - if (selected_frame == NULL) - error ("No selected frame."); - thisfun = get_frame_function (selected_frame); - selected_frame_addr = FRAME_FP (selected_frame); - selected_frame_pc = selected_frame->pc; - - /* Compute the return value (if any -- possibly getting errors here). */ - - if (retval_exp) - { - struct type *return_type = NULL; - - return_value = parse_and_eval (retval_exp); - - /* Cast return value to the return type of the function. */ - if (thisfun != NULL) - return_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (thisfun)); - if (return_type == NULL) - return_type = builtin_type_int; - return_value = value_cast (return_type, return_value); - - /* Make sure we have fully evaluated it, since - it might live in the stack frame we're about to pop. */ - if (VALUE_LAZY (return_value)) - value_fetch_lazy (return_value); - } - - /* If interactive, require confirmation. */ - - if (from_tty) - { - if (thisfun != 0) - { - if (!query ("Make %s return now? ", SYMBOL_SOURCE_NAME (thisfun))) - { - error ("Not confirmed."); - /* NOTREACHED */ - } - } - else - if (!query ("Make selected stack frame return now? ")) - error ("Not confirmed."); - } - - /* Do the real work. Pop until the specified frame is current. We - use this method because the selected_frame is not valid after - a POP_FRAME. The pc comparison makes this work even if the - selected frame shares its fp with another frame. */ - - while (selected_frame_addr != (frame = get_current_frame())->frame - || selected_frame_pc != frame->pc) - POP_FRAME; - - /* Then pop that frame. */ - - POP_FRAME; - - /* Compute the return value (if any) and store in the place - for return values. */ - - if (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); -} - -/* Sets the scope to input function name, provided that the - function is within the current stack frame */ -struct function_bounds -{ - CORE_ADDR low, high; -}; - -static void -func_command (arg, from_tty) - char *arg; - int from_tty; -{ - if (arg != (char *)NULL) - { - struct frame_info *fp; - int found = 0; - struct symtabs_and_lines sals; - int i; - int level = 1; - struct function_bounds *funcBounds = (struct function_bounds *)NULL; - - fp = parse_frame_specification("0"); - sals = decode_line_spec(arg, 1); - funcBounds = (struct function_bounds *)xmalloc( - sizeof(struct function_bounds) * sals.nelts); - for (i = 0; (i < sals.nelts && !found); i++) - { - if (sals.sals[i].pc == (CORE_ADDR)0 || - find_pc_partial_function(sals.sals[i].pc, - (char **)NULL, - &funcBounds[i].low, - &funcBounds[i].high) == 0) - { - funcBounds[i].low = - funcBounds[i].high = (CORE_ADDR)NULL; - } - } - - do - { - for (i = 0; (i < sals.nelts && !found); i++) - found = (fp->pc >= funcBounds[i].low && - fp->pc < funcBounds[i].high); - if (!found) - { - level = 1; - fp = find_relative_frame(fp, &level); - } - } while (!found && level == 0); - - if (funcBounds) - free(funcBounds); - - if (!found) - printf_filtered("'%s' not within current stack frame.\n", arg); - else if (fp != selected_frame) /* set the stack frame here! */ - select_and_print_frame(fp); - } -} - -/* 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; -} - -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 ("up-silently", class_support, up_silently_command, - "Same as the `up' command, but does not print anything.\n\ -This is useful in command scripts."); - - add_com ("down", class_stack, down_command, - "Select and print stack frame called by this one.\n\ -An argument says how many frames down to go."); - add_com_alias ("do", "down", class_stack, 1); - add_com_alias ("dow", "down", class_stack, 1); - add_com ("down-silently", class_support, down_silently_command, - "Same as the `down' command, but does not print anything.\n\ -This is useful in command scripts."); - - add_com ("frame", class_stack, frame_command, - "Select and print a stack frame.\n\ -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); - - if (xdb_commands) - { - add_com("L", class_stack, current_frame_command, - "Print the current stack frame.\n"); - add_com_alias ("V", "frame", class_stack, 1); - } - add_com ("select-frame", class_stack, select_frame_command, - "Select a stack frame without printing anything.\n\ -An argument specifies the frame to select.\n\ -It can be a stack frame number or the address of the frame.\n"); - - add_com ("backtrace", class_stack, backtrace_command, - "Print backtrace of all stack frames, or innermost COUNT frames.\n\ -With a negative argument, print outermost -COUNT frames.\n\ -Use of the 'full' qualifier also prints the values of the local variables.\n"); - add_com_alias ("bt", "backtrace", class_stack, 0); - if (xdb_commands) - { - add_com_alias ("t", "backtrace", class_stack, 0); - add_com ("T", class_stack, backtrace_full_command, - "Print backtrace of all stack frames, or innermost COUNT frames \n\ -and the values of the local variables.\n\ -With a negative argument, print outermost -COUNT frames.\n\ -Usage: T <count>\n"); - } - - add_com_alias ("where", "backtrace", class_alias, 0); - add_info ("stack", backtrace_command, - "Backtrace of the stack, or innermost COUNT frames."); - 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 (xdb_commands) - add_com("l", class_info, args_plus_locals_info, - "Argument and local variables of current stack frame."); - - if (dbx_commands) - add_com("func", class_stack, func_command, - "Select the stack frame that contains <func>.\nUsage: func <name>\n"); - - add_info ("catch", catch_info, - "Exceptions that can be caught in the current stack frame."); - -#if 0 - add_cmd ("backtrace-limit", class_stack, set_backtrace_limit_command, - "Specify maximum number of frames for \"backtrace\" to print by default.", - &setlist); - add_info ("backtrace-limit", backtrace_limit_info, - "The maximum number of frames for \"backtrace\" to print by default."); -#endif -} |