diff options
Diffstat (limited to 'gdb/utils.c')
| -rw-r--r-- | gdb/utils.c | 2533 |
1 files changed, 0 insertions, 2533 deletions
diff --git a/gdb/utils.c b/gdb/utils.c deleted file mode 100644 index db21d34abed..00000000000 --- a/gdb/utils.c +++ /dev/null @@ -1,2533 +0,0 @@ -/* General utility routines for GDB, the GNU debugger. - Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, - 1996, 1997, 1998, 1999, 2000, 2001, 2002 - 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 "config.h" - -/* Include before "bfd.h" so that we get stdbool.h in time, if <curses.h> - brings it in. */ -#ifdef HAVE_CURSES_H -#include <curses.h> -#endif -#ifdef HAVE_TERM_H -#include <term.h> -#endif - -#include "defs.h" -#include "gdb_assert.h" -#include <ctype.h> -#include "gdb_string.h" -#include "event-top.h" - -#ifdef __GO32__ -#include <pc.h> -#endif - -/* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ -#ifdef reg -#undef reg -#endif - -#include <signal.h> -#include "gdbcmd.h" -#include "serial.h" -#include "bfd.h" -#include "target.h" -#include "demangle.h" -#include "expression.h" -#include "language.h" -#include "annotate.h" - -#include "inferior.h" /* for signed_pointer_to_address */ - -#include <sys/param.h> /* For MAXPATHLEN */ - -#include <readline/readline.h> - -#ifdef USE_MMALLOC -#include "mmalloc.h" -#endif - -#ifdef NEED_DECLARATION_MALLOC -extern PTR malloc (); -#endif -#ifdef NEED_DECLARATION_REALLOC -extern PTR realloc (); -#endif -#ifdef NEED_DECLARATION_FREE -extern void free (); -#endif - -#undef XMALLOC -#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE))) - -/* readline defines this. */ -#undef savestring - -void (*error_begin_hook) (void); - -/* Holds the last error message issued by gdb */ - -static struct ui_file *gdb_lasterr; - -/* Prototypes for local functions */ - -static void vfprintf_maybe_filtered (struct ui_file *, const char *, - va_list, int); - -static void fputs_maybe_filtered (const char *, struct ui_file *, int); - -#if defined (USE_MMALLOC) && !defined (NO_MMCHECK) -static void malloc_botch (void); -#endif - -static void prompt_for_continue (void); - -static void set_width_command (char *, int, struct cmd_list_element *); - -static void set_width (void); - -/* Chain of cleanup actions established with make_cleanup, - to be executed if an error happens. */ - -static struct cleanup *cleanup_chain; /* cleaned up after a failed command */ -static struct cleanup *final_cleanup_chain; /* cleaned up when gdb exits */ -static struct cleanup *run_cleanup_chain; /* cleaned up on each 'run' */ -static struct cleanup *exec_cleanup_chain; /* cleaned up on each execution command */ -/* cleaned up on each error from within an execution command */ -static struct cleanup *exec_error_cleanup_chain; - -/* Pointer to what is left to do for an execution command after the - target stops. Used only in asynchronous mode, by targets that - support async execution. The finish and until commands use it. So - does the target extended-remote command. */ -struct continuation *cmd_continuation; -struct continuation *intermediate_continuation; - -/* Nonzero if we have job control. */ - -int job_control; - -/* Nonzero means a quit has been requested. */ - -int quit_flag; - -/* Nonzero means quit immediately if Control-C is typed now, rather - than waiting until QUIT is executed. Be careful in setting this; - code which executes with immediate_quit set has to be very careful - about being able to deal with being interrupted at any time. It is - almost always better to use QUIT; the only exception I can think of - is being able to quit out of a system call (using EINTR loses if - the SIGINT happens between the previous QUIT and the system call). - To immediately quit in the case in which a SIGINT happens between - the previous QUIT and setting immediate_quit (desirable anytime we - expect to block), call QUIT after setting immediate_quit. */ - -int immediate_quit; - -/* Nonzero means that encoded C++ names should be printed out in their - C++ form rather than raw. */ - -int demangle = 1; - -/* Nonzero means that encoded C++ names should be printed out in their - C++ form even in assembler language displays. If this is set, but - DEMANGLE is zero, names are printed raw, i.e. DEMANGLE controls. */ - -int asm_demangle = 0; - -/* Nonzero means that strings with character values >0x7F should be printed - as octal escapes. Zero means just print the value (e.g. it's an - international character, and the terminal or window can cope.) */ - -int sevenbit_strings = 0; - -/* String to be printed before error messages, if any. */ - -char *error_pre_print; - -/* String to be printed before quit messages, if any. */ - -char *quit_pre_print; - -/* String to be printed before warning messages, if any. */ - -char *warning_pre_print = "\nwarning: "; - -int pagination_enabled = 1; - - -/* Add a new cleanup to the cleanup_chain, - and return the previous chain pointer - to be passed later to do_cleanups or discard_cleanups. - Args are FUNCTION to clean up with, and ARG to pass to it. */ - -struct cleanup * -make_cleanup (make_cleanup_ftype *function, void *arg) -{ - return make_my_cleanup (&cleanup_chain, function, arg); -} - -struct cleanup * -make_final_cleanup (make_cleanup_ftype *function, void *arg) -{ - return make_my_cleanup (&final_cleanup_chain, function, arg); -} - -struct cleanup * -make_run_cleanup (make_cleanup_ftype *function, void *arg) -{ - return make_my_cleanup (&run_cleanup_chain, function, arg); -} - -struct cleanup * -make_exec_cleanup (make_cleanup_ftype *function, void *arg) -{ - return make_my_cleanup (&exec_cleanup_chain, function, arg); -} - -struct cleanup * -make_exec_error_cleanup (make_cleanup_ftype *function, void *arg) -{ - return make_my_cleanup (&exec_error_cleanup_chain, function, arg); -} - -static void -do_freeargv (void *arg) -{ - freeargv ((char **) arg); -} - -struct cleanup * -make_cleanup_freeargv (char **arg) -{ - return make_my_cleanup (&cleanup_chain, do_freeargv, arg); -} - -static void -do_bfd_close_cleanup (void *arg) -{ - bfd_close (arg); -} - -struct cleanup * -make_cleanup_bfd_close (bfd *abfd) -{ - return make_cleanup (do_bfd_close_cleanup, abfd); -} - -static void -do_close_cleanup (void *arg) -{ - int *fd = arg; - close (*fd); - xfree (fd); -} - -struct cleanup * -make_cleanup_close (int fd) -{ - int *saved_fd = xmalloc (sizeof (fd)); - *saved_fd = fd; - return make_cleanup (do_close_cleanup, saved_fd); -} - -static void -do_ui_file_delete (void *arg) -{ - ui_file_delete (arg); -} - -struct cleanup * -make_cleanup_ui_file_delete (struct ui_file *arg) -{ - return make_my_cleanup (&cleanup_chain, do_ui_file_delete, arg); -} - -struct cleanup * -make_my_cleanup (struct cleanup **pmy_chain, make_cleanup_ftype *function, - void *arg) -{ - register struct cleanup *new - = (struct cleanup *) xmalloc (sizeof (struct cleanup)); - register struct cleanup *old_chain = *pmy_chain; - - new->next = *pmy_chain; - new->function = function; - new->arg = arg; - *pmy_chain = new; - - return old_chain; -} - -/* Discard cleanups and do the actions they describe - until we get back to the point OLD_CHAIN in the cleanup_chain. */ - -void -do_cleanups (register struct cleanup *old_chain) -{ - do_my_cleanups (&cleanup_chain, old_chain); -} - -void -do_final_cleanups (register struct cleanup *old_chain) -{ - do_my_cleanups (&final_cleanup_chain, old_chain); -} - -void -do_run_cleanups (register struct cleanup *old_chain) -{ - do_my_cleanups (&run_cleanup_chain, old_chain); -} - -void -do_exec_cleanups (register struct cleanup *old_chain) -{ - do_my_cleanups (&exec_cleanup_chain, old_chain); -} - -void -do_exec_error_cleanups (register struct cleanup *old_chain) -{ - do_my_cleanups (&exec_error_cleanup_chain, old_chain); -} - -void -do_my_cleanups (register struct cleanup **pmy_chain, - register struct cleanup *old_chain) -{ - register struct cleanup *ptr; - while ((ptr = *pmy_chain) != old_chain) - { - *pmy_chain = ptr->next; /* Do this first incase recursion */ - (*ptr->function) (ptr->arg); - xfree (ptr); - } -} - -/* Discard cleanups, not doing the actions they describe, - until we get back to the point OLD_CHAIN in the cleanup_chain. */ - -void -discard_cleanups (register struct cleanup *old_chain) -{ - discard_my_cleanups (&cleanup_chain, old_chain); -} - -void -discard_final_cleanups (register struct cleanup *old_chain) -{ - discard_my_cleanups (&final_cleanup_chain, old_chain); -} - -void -discard_exec_error_cleanups (register struct cleanup *old_chain) -{ - discard_my_cleanups (&exec_error_cleanup_chain, old_chain); -} - -void -discard_my_cleanups (register struct cleanup **pmy_chain, - register struct cleanup *old_chain) -{ - register struct cleanup *ptr; - while ((ptr = *pmy_chain) != old_chain) - { - *pmy_chain = ptr->next; - xfree (ptr); - } -} - -/* Set the cleanup_chain to 0, and return the old cleanup chain. */ -struct cleanup * -save_cleanups (void) -{ - return save_my_cleanups (&cleanup_chain); -} - -struct cleanup * -save_final_cleanups (void) -{ - return save_my_cleanups (&final_cleanup_chain); -} - -struct cleanup * -save_my_cleanups (struct cleanup **pmy_chain) -{ - struct cleanup *old_chain = *pmy_chain; - - *pmy_chain = 0; - return old_chain; -} - -/* Restore the cleanup chain from a previously saved chain. */ -void -restore_cleanups (struct cleanup *chain) -{ - restore_my_cleanups (&cleanup_chain, chain); -} - -void -restore_final_cleanups (struct cleanup *chain) -{ - restore_my_cleanups (&final_cleanup_chain, chain); -} - -void -restore_my_cleanups (struct cleanup **pmy_chain, struct cleanup *chain) -{ - *pmy_chain = chain; -} - -/* This function is useful for cleanups. - Do - - foo = xmalloc (...); - old_chain = make_cleanup (free_current_contents, &foo); - - to arrange to free the object thus allocated. */ - -void -free_current_contents (void *ptr) -{ - void **location = ptr; - if (location == NULL) - internal_error (__FILE__, __LINE__, - "free_current_contents: NULL pointer"); - if (*location != NULL) - { - xfree (*location); - *location = NULL; - } -} - -/* Provide a known function that does nothing, to use as a base for - for a possibly long chain of cleanups. This is useful where we - use the cleanup chain for handling normal cleanups as well as dealing - with cleanups that need to be done as a result of a call to error(). - In such cases, we may not be certain where the first cleanup is, unless - we have a do-nothing one to always use as the base. */ - -/* ARGSUSED */ -void -null_cleanup (void *arg) -{ -} - -/* Add a continuation to the continuation list, the global list - cmd_continuation. The new continuation will be added at the front.*/ -void -add_continuation (void (*continuation_hook) (struct continuation_arg *), - struct continuation_arg *arg_list) -{ - struct continuation *continuation_ptr; - - continuation_ptr = (struct continuation *) xmalloc (sizeof (struct continuation)); - continuation_ptr->continuation_hook = continuation_hook; - continuation_ptr->arg_list = arg_list; - continuation_ptr->next = cmd_continuation; - cmd_continuation = continuation_ptr; -} - -/* Walk down the cmd_continuation list, and execute all the - continuations. There is a problem though. In some cases new - continuations may be added while we are in the middle of this - loop. If this happens they will be added in the front, and done - before we have a chance of exhausting those that were already - there. We need to then save the beginning of the list in a pointer - and do the continuations from there on, instead of using the - global beginning of list as our iteration pointer.*/ -void -do_all_continuations (void) -{ - struct continuation *continuation_ptr; - struct continuation *saved_continuation; - - /* Copy the list header into another pointer, and set the global - list header to null, so that the global list can change as a side - effect of invoking the continuations and the processing of - the preexisting continuations will not be affected. */ - continuation_ptr = cmd_continuation; - cmd_continuation = NULL; - - /* Work now on the list we have set aside. */ - while (continuation_ptr) - { - (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); - saved_continuation = continuation_ptr; - continuation_ptr = continuation_ptr->next; - xfree (saved_continuation); - } -} - -/* Walk down the cmd_continuation list, and get rid of all the - continuations. */ -void -discard_all_continuations (void) -{ - struct continuation *continuation_ptr; - - while (cmd_continuation) - { - continuation_ptr = cmd_continuation; - cmd_continuation = continuation_ptr->next; - xfree (continuation_ptr); - } -} - -/* Add a continuation to the continuation list, the global list - intermediate_continuation. The new continuation will be added at the front.*/ -void -add_intermediate_continuation (void (*continuation_hook) - (struct continuation_arg *), - struct continuation_arg *arg_list) -{ - struct continuation *continuation_ptr; - - continuation_ptr = (struct continuation *) xmalloc (sizeof (struct continuation)); - continuation_ptr->continuation_hook = continuation_hook; - continuation_ptr->arg_list = arg_list; - continuation_ptr->next = intermediate_continuation; - intermediate_continuation = continuation_ptr; -} - -/* Walk down the cmd_continuation list, and execute all the - continuations. There is a problem though. In some cases new - continuations may be added while we are in the middle of this - loop. If this happens they will be added in the front, and done - before we have a chance of exhausting those that were already - there. We need to then save the beginning of the list in a pointer - and do the continuations from there on, instead of using the - global beginning of list as our iteration pointer.*/ -void -do_all_intermediate_continuations (void) -{ - struct continuation *continuation_ptr; - struct continuation *saved_continuation; - - /* Copy the list header into another pointer, and set the global - list header to null, so that the global list can change as a side - effect of invoking the continuations and the processing of - the preexisting continuations will not be affected. */ - continuation_ptr = intermediate_continuation; - intermediate_continuation = NULL; - - /* Work now on the list we have set aside. */ - while (continuation_ptr) - { - (continuation_ptr->continuation_hook) (continuation_ptr->arg_list); - saved_continuation = continuation_ptr; - continuation_ptr = continuation_ptr->next; - xfree (saved_continuation); - } -} - -/* Walk down the cmd_continuation list, and get rid of all the - continuations. */ -void -discard_all_intermediate_continuations (void) -{ - struct continuation *continuation_ptr; - - while (intermediate_continuation) - { - continuation_ptr = intermediate_continuation; - intermediate_continuation = continuation_ptr->next; - xfree (continuation_ptr); - } -} - - - -/* Print a warning message. The first argument STRING is the warning - message, used as an fprintf format string, the second is the - va_list of arguments for that string. A warning is unfiltered (not - paginated) so that the user does not need to page through each - screen full of warnings when there are lots of them. */ - -void -vwarning (const char *string, va_list args) -{ - if (warning_hook) - (*warning_hook) (string, args); - else - { - target_terminal_ours (); - wrap_here (""); /* Force out any buffered output */ - gdb_flush (gdb_stdout); - if (warning_pre_print) - fprintf_unfiltered (gdb_stderr, warning_pre_print); - vfprintf_unfiltered (gdb_stderr, string, args); - fprintf_unfiltered (gdb_stderr, "\n"); - va_end (args); - } -} - -/* Print a warning message. - The first argument STRING is the warning message, used as a fprintf string, - and the remaining args are passed as arguments to it. - The primary difference between warnings and errors is that a warning - does not force the return to command level. */ - -void -warning (const char *string,...) -{ - va_list args; - va_start (args, string); - vwarning (string, args); - va_end (args); -} - -/* Print an error message and return to command level. - The first argument STRING is the error message, used as a fprintf string, - and the remaining args are passed as arguments to it. */ - -NORETURN void -verror (const char *string, va_list args) -{ - struct ui_file *tmp_stream = mem_fileopen (); - make_cleanup_ui_file_delete (tmp_stream); - vfprintf_unfiltered (tmp_stream, string, args); - error_stream (tmp_stream); -} - -NORETURN void -error (const char *string,...) -{ - va_list args; - va_start (args, string); - verror (string, args); - va_end (args); -} - -static void -do_write (void *data, const char *buffer, long length_buffer) -{ - ui_file_write (data, buffer, length_buffer); -} - -NORETURN void -error_stream (struct ui_file *stream) -{ - if (error_begin_hook) - error_begin_hook (); - - /* Copy the stream into the GDB_LASTERR buffer. */ - ui_file_rewind (gdb_lasterr); - ui_file_put (stream, do_write, gdb_lasterr); - - /* Write the message plus any error_pre_print to gdb_stderr. */ - target_terminal_ours (); - wrap_here (""); /* Force out any buffered output */ - gdb_flush (gdb_stdout); - annotate_error_begin (); - if (error_pre_print) - fprintf_filtered (gdb_stderr, error_pre_print); - ui_file_put (stream, do_write, gdb_stderr); - fprintf_filtered (gdb_stderr, "\n"); - - return_to_top_level (RETURN_ERROR); -} - -/* Get the last error message issued by gdb */ - -char * -error_last_message (void) -{ - long len; - return ui_file_xstrdup (gdb_lasterr, &len); -} - -/* This is to be called by main() at the very beginning */ - -void -error_init (void) -{ - gdb_lasterr = mem_fileopen (); -} - -/* Print a message reporting an internal error. Ask the user if they - want to continue, dump core, or just exit. */ - -NORETURN void -internal_verror (const char *file, int line, - const char *fmt, va_list ap) -{ - static char msg[] = "Internal GDB error: recursive internal error.\n"; - static int dejavu = 0; - int quit_p; - int dump_core_p; - - /* don't allow infinite error recursion. */ - switch (dejavu) - { - case 0: - dejavu = 1; - break; - case 1: - dejavu = 2; - fputs_unfiltered (msg, gdb_stderr); - abort (); /* NOTE: GDB has only three calls to abort(). */ - default: - dejavu = 3; - write (STDERR_FILENO, msg, sizeof (msg)); - exit (1); - } - - /* Try to get the message out */ - target_terminal_ours (); - fprintf_unfiltered (gdb_stderr, "%s:%d: gdb-internal-error: ", file, line); - vfprintf_unfiltered (gdb_stderr, fmt, ap); - fputs_unfiltered ("\n", gdb_stderr); - - /* Default (yes/batch case) is to quit GDB. When in batch mode this - lessens the likelhood of GDB going into an infinate loop. */ - quit_p = query ("\ -An internal GDB error was detected. This may make further\n\ -debugging unreliable. Quit this debugging session? "); - - /* Default (yes/batch case) is to dump core. This leaves a GDB - dropping so that it is easier to see that something went wrong to - GDB. */ - dump_core_p = query ("\ -Create a core file containing the current state of GDB? "); - - if (quit_p) - { - if (dump_core_p) - abort (); /* NOTE: GDB has only three calls to abort(). */ - else - exit (1); - } - else - { - if (dump_core_p) - { - if (fork () == 0) - abort (); /* NOTE: GDB has only three calls to abort(). */ - } - } - - dejavu = 0; - return_to_top_level (RETURN_ERROR); -} - -NORETURN void -internal_error (const char *file, int line, const char *string, ...) -{ - va_list ap; - va_start (ap, string); - - internal_verror (file, line, string, ap); - va_end (ap); -} - -/* The strerror() function can return NULL for errno values that are - out of range. Provide a "safe" version that always returns a - printable string. */ - -char * -safe_strerror (int errnum) -{ - char *msg; - static char buf[32]; - - if ((msg = strerror (errnum)) == NULL) - { - sprintf (buf, "(undocumented errno %d)", errnum); - msg = buf; - } - return (msg); -} - -/* Print the system error message for errno, and also mention STRING - as the file name for which the error was encountered. - Then return to command level. */ - -NORETURN void -perror_with_name (char *string) -{ - char *err; - char *combined; - - err = safe_strerror (errno); - combined = (char *) alloca (strlen (err) + strlen (string) + 3); - strcpy (combined, string); - strcat (combined, ": "); - strcat (combined, err); - - /* I understand setting these is a matter of taste. Still, some people - may clear errno but not know about bfd_error. Doing this here is not - unreasonable. */ - bfd_set_error (bfd_error_no_error); - errno = 0; - - error ("%s.", combined); -} - -/* Print the system error message for ERRCODE, and also mention STRING - as the file name for which the error was encountered. */ - -void -print_sys_errmsg (char *string, int errcode) -{ - char *err; - char *combined; - - err = safe_strerror (errcode); - combined = (char *) alloca (strlen (err) + strlen (string) + 3); - strcpy (combined, string); - strcat (combined, ": "); - strcat (combined, err); - - /* We want anything which was printed on stdout to come out first, before - this message. */ - gdb_flush (gdb_stdout); - fprintf_unfiltered (gdb_stderr, "%s.\n", combined); -} - -/* Control C eventually causes this to be called, at a convenient time. */ - -void -quit (void) -{ - struct serial *gdb_stdout_serial = serial_fdopen (1); - - target_terminal_ours (); - - /* We want all output to appear now, before we print "Quit". We - have 3 levels of buffering we have to flush (it's possible that - some of these should be changed to flush the lower-level ones - too): */ - - /* 1. The _filtered buffer. */ - wrap_here ((char *) 0); - - /* 2. The stdio buffer. */ - gdb_flush (gdb_stdout); - gdb_flush (gdb_stderr); - - /* 3. The system-level buffer. */ - serial_drain_output (gdb_stdout_serial); - serial_un_fdopen (gdb_stdout_serial); - - annotate_error_begin (); - - /* Don't use *_filtered; we don't want to prompt the user to continue. */ - if (quit_pre_print) - fprintf_unfiltered (gdb_stderr, quit_pre_print); - -#ifdef __MSDOS__ - /* No steenking SIGINT will ever be coming our way when the - program is resumed. Don't lie. */ - fprintf_unfiltered (gdb_stderr, "Quit\n"); -#else - if (job_control - /* If there is no terminal switching for this target, then we can't - possibly get screwed by the lack of job control. */ - || current_target.to_terminal_ours == NULL) - fprintf_unfiltered (gdb_stderr, "Quit\n"); - else - fprintf_unfiltered (gdb_stderr, - "Quit (expect signal SIGINT when the program is resumed)\n"); -#endif - return_to_top_level (RETURN_QUIT); -} - -/* Control C comes here */ -void -request_quit (int signo) -{ - quit_flag = 1; - /* Restore the signal handler. Harmless with BSD-style signals, needed - for System V-style signals. So just always do it, rather than worrying - about USG defines and stuff like that. */ - signal (signo, request_quit); - -#ifdef REQUEST_QUIT - REQUEST_QUIT; -#else - if (immediate_quit) - quit (); -#endif -} - -/* Memory management stuff (malloc friends). */ - -#if !defined (USE_MMALLOC) - -/* NOTE: These must use PTR so that their definition matches the - declaration found in "mmalloc.h". */ - -static void * -mmalloc (void *md, size_t size) -{ - return malloc (size); /* NOTE: GDB's only call to malloc() */ -} - -static void * -mrealloc (void *md, void *ptr, size_t size) -{ - if (ptr == 0) /* Guard against old realloc's */ - return mmalloc (md, size); - else - return realloc (ptr, size); /* NOTE: GDB's only call to ralloc() */ -} - -static void * -mcalloc (void *md, size_t number, size_t size) -{ - return calloc (number, size); /* NOTE: GDB's only call to calloc() */ -} - -static void -mfree (void *md, void *ptr) -{ - free (ptr); /* NOTE: GDB's only call to free() */ -} - -#endif /* USE_MMALLOC */ - -#if !defined (USE_MMALLOC) || defined (NO_MMCHECK) - -void -init_malloc (void *md) -{ -} - -#else /* Have mmalloc and want corruption checking */ - -static void -malloc_botch (void) -{ - fprintf_unfiltered (gdb_stderr, "Memory corruption\n"); - internal_error (__FILE__, __LINE__, "failed internal consistency check"); -} - -/* Attempt to install hooks in mmalloc/mrealloc/mfree for the heap specified - by MD, to detect memory corruption. Note that MD may be NULL to specify - the default heap that grows via sbrk. - - Note that for freshly created regions, we must call mmcheckf prior to any - mallocs in the region. Otherwise, any region which was allocated prior to - installing the checking hooks, which is later reallocated or freed, will - fail the checks! The mmcheck function only allows initial hooks to be - installed before the first mmalloc. However, anytime after we have called - mmcheck the first time to install the checking hooks, we can call it again - to update the function pointer to the memory corruption handler. - - Returns zero on failure, non-zero on success. */ - -#ifndef MMCHECK_FORCE -#define MMCHECK_FORCE 0 -#endif - -void -init_malloc (void *md) -{ - if (!mmcheckf (md, malloc_botch, MMCHECK_FORCE)) - { - /* Don't use warning(), which relies on current_target being set - to something other than dummy_target, until after - initialize_all_files(). */ - - fprintf_unfiltered - (gdb_stderr, "warning: failed to install memory consistency checks; "); - fprintf_unfiltered - (gdb_stderr, "configuration should define NO_MMCHECK or MMCHECK_FORCE\n"); - } - - mmtrace (); -} - -#endif /* Have mmalloc and want corruption checking */ - -/* Called when a memory allocation fails, with the number of bytes of - memory requested in SIZE. */ - -NORETURN void -nomem (long size) -{ - if (size > 0) - { - internal_error (__FILE__, __LINE__, - "virtual memory exhausted: can't allocate %ld bytes.", size); - } - else - { - internal_error (__FILE__, __LINE__, - "virtual memory exhausted."); - } -} - -/* The xmmalloc() family of memory management routines. - - These are are like the mmalloc() family except that they implement - consistent semantics and guard against typical memory management - problems: if a malloc fails, an internal error is thrown; if - free(NULL) is called, it is ignored; if *alloc(0) is called, NULL - is returned. - - All these routines are implemented using the mmalloc() family. */ - -void * -xmmalloc (void *md, size_t size) -{ - void *val; - - if (size == 0) - { - val = NULL; - } - else - { - val = mmalloc (md, size); - if (val == NULL) - nomem (size); - } - return (val); -} - -void * -xmrealloc (void *md, void *ptr, size_t size) -{ - void *val; - - if (size == 0) - { - if (ptr != NULL) - mfree (md, ptr); - val = NULL; - } - else - { - if (ptr != NULL) - { - val = mrealloc (md, ptr, size); - } - else - { - val = mmalloc (md, size); - } - if (val == NULL) - { - nomem (size); - } - } - return (val); -} - -void * -xmcalloc (void *md, size_t number, size_t size) -{ - void *mem; - if (number == 0 || size == 0) - mem = NULL; - else - { - mem = mcalloc (md, number, size); - if (mem == NULL) - nomem (number * size); - } - return mem; -} - -void -xmfree (void *md, void *ptr) -{ - if (ptr != NULL) - mfree (md, ptr); -} - -/* The xmalloc() (libiberty.h) family of memory management routines. - - These are like the ISO-C malloc() family except that they implement - consistent semantics and guard against typical memory management - problems. See xmmalloc() above for further information. - - All these routines are wrappers to the xmmalloc() family. */ - -/* NOTE: These are declared using PTR to ensure consistency with - "libiberty.h". xfree() is GDB local. */ - -PTR -xmalloc (size_t size) -{ - return xmmalloc (NULL, size); -} - -PTR -xrealloc (PTR ptr, size_t size) -{ - return xmrealloc (NULL, ptr, size); -} - -PTR -xcalloc (size_t number, size_t size) -{ - return xmcalloc (NULL, number, size); -} - -void -xfree (void *ptr) -{ - xmfree (NULL, ptr); -} - - -/* Like asprintf/vasprintf but get an internal_error if the call - fails. */ - -void -xasprintf (char **ret, const char *format, ...) -{ - va_list args; - va_start (args, format); - xvasprintf (ret, format, args); - va_end (args); -} - -void -xvasprintf (char **ret, const char *format, va_list ap) -{ - int status = vasprintf (ret, format, ap); - /* NULL could be returned due to a memory allocation problem; a - badly format string; or something else. */ - if ((*ret) == NULL) - internal_error (__FILE__, __LINE__, - "vasprintf returned NULL buffer (errno %d)", - errno); - /* A negative status with a non-NULL buffer shouldn't never - happen. But to be sure. */ - if (status < 0) - internal_error (__FILE__, __LINE__, - "vasprintf call failed (errno %d)", - errno); -} - - -/* My replacement for the read system call. - Used like `read' but keeps going if `read' returns too soon. */ - -int -myread (int desc, char *addr, int len) -{ - register int val; - int orglen = len; - - while (len > 0) - { - val = read (desc, addr, len); - if (val < 0) - return val; - if (val == 0) - return orglen - len; - len -= val; - addr += val; - } - return orglen; -} - -/* Make a copy of the string at PTR with SIZE characters - (and add a null character at the end in the copy). - Uses malloc to get the space. Returns the address of the copy. */ - -char * -savestring (const char *ptr, size_t size) -{ - register char *p = (char *) xmalloc (size + 1); - memcpy (p, ptr, size); - p[size] = 0; - return p; -} - -char * -msavestring (void *md, const char *ptr, size_t size) -{ - register char *p = (char *) xmmalloc (md, size + 1); - memcpy (p, ptr, size); - p[size] = 0; - return p; -} - -char * -mstrsave (void *md, const char *ptr) -{ - return (msavestring (md, ptr, strlen (ptr))); -} - -void -print_spaces (register int n, register struct ui_file *file) -{ - fputs_unfiltered (n_spaces (n), file); -} - -/* Print a host address. */ - -void -gdb_print_host_address (void *addr, struct ui_file *stream) -{ - - /* We could use the %p conversion specifier to fprintf if we had any - way of knowing whether this host supports it. But the following - should work on the Alpha and on 32 bit machines. */ - - fprintf_filtered (stream, "0x%lx", (unsigned long) addr); -} - -/* Ask user a y-or-n question and return 1 iff answer is yes. - Takes three args which are given to printf to print the question. - The first, a control string, should end in "? ". - It should not say how to answer, because we do that. */ - -/* VARARGS */ -int -query (char *ctlstr,...) -{ - va_list args; - register int answer; - register int ans2; - int retval; - - va_start (args, ctlstr); - - if (query_hook) - { - return query_hook (ctlstr, args); - } - - /* Automatically answer "yes" if input is not from a terminal. */ - if (!input_from_terminal_p ()) - return 1; - - while (1) - { - wrap_here (""); /* Flush any buffered output */ - gdb_flush (gdb_stdout); - - if (annotation_level > 1) - printf_filtered ("\n\032\032pre-query\n"); - - vfprintf_filtered (gdb_stdout, ctlstr, args); - printf_filtered ("(y or n) "); - - if (annotation_level > 1) - printf_filtered ("\n\032\032query\n"); - - wrap_here (""); - gdb_flush (gdb_stdout); - - answer = fgetc (stdin); - clearerr (stdin); /* in case of C-d */ - if (answer == EOF) /* C-d */ - { - retval = 1; - break; - } - /* Eat rest of input line, to EOF or newline */ - if (answer != '\n') - do - { - ans2 = fgetc (stdin); - clearerr (stdin); - } - while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); - - if (answer >= 'a') - answer -= 040; - if (answer == 'Y') - { - retval = 1; - break; - } - if (answer == 'N') - { - retval = 0; - break; - } - printf_filtered ("Please answer y or n.\n"); - } - - if (annotation_level > 1) - printf_filtered ("\n\032\032post-query\n"); - return retval; -} - - -/* Parse a C escape sequence. STRING_PTR points to a variable - containing a pointer to the string to parse. That pointer - should point to the character after the \. That pointer - is updated past the characters we use. The value of the - escape sequence is returned. - - A negative value means the sequence \ newline was seen, - which is supposed to be equivalent to nothing at all. - - If \ is followed by a null character, we return a negative - value and leave the string pointer pointing at the null character. - - If \ is followed by 000, we return 0 and leave the string pointer - after the zeros. A value of 0 does not mean end of string. */ - -int -parse_escape (char **string_ptr) -{ - register int c = *(*string_ptr)++; - switch (c) - { - case 'a': - return 007; /* Bell (alert) char */ - case 'b': - return '\b'; - case 'e': /* Escape character */ - return 033; - case 'f': - return '\f'; - case 'n': - return '\n'; - case 'r': - return '\r'; - case 't': - return '\t'; - case 'v': - return '\v'; - case '\n': - return -2; - case 0: - (*string_ptr)--; - return 0; - case '^': - c = *(*string_ptr)++; - if (c == '\\') - c = parse_escape (string_ptr); - if (c == '?') - return 0177; - return (c & 0200) | (c & 037); - - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - { - register int i = c - '0'; - register int count = 0; - while (++count < 3) - { - if ((c = *(*string_ptr)++) >= '0' && c <= '7') - { - i *= 8; - i += c - '0'; - } - else - { - (*string_ptr)--; - break; - } - } - return i; - } - default: - return c; - } -} - -/* Print the character C on STREAM as part of the contents of a literal - string whose delimiter is QUOTER. Note that this routine should only - be call for printing things which are independent of the language - of the program being debugged. */ - -static void -printchar (int c, void (*do_fputs) (const char *, struct ui_file *), - void (*do_fprintf) (struct ui_file *, const char *, ...), - struct ui_file *stream, int quoter) -{ - - c &= 0xFF; /* Avoid sign bit follies */ - - if (c < 0x20 || /* Low control chars */ - (c >= 0x7F && c < 0xA0) || /* DEL, High controls */ - (sevenbit_strings && c >= 0x80)) - { /* high order bit set */ - switch (c) - { - case '\n': - do_fputs ("\\n", stream); - break; - case '\b': - do_fputs ("\\b", stream); - break; - case '\t': - do_fputs ("\\t", stream); - break; - case '\f': - do_fputs ("\\f", stream); - break; - case '\r': - do_fputs ("\\r", stream); - break; - case '\033': - do_fputs ("\\e", stream); - break; - case '\007': - do_fputs ("\\a", stream); - break; - default: - do_fprintf (stream, "\\%.3o", (unsigned int) c); - break; - } - } - else - { - if (c == '\\' || c == quoter) - do_fputs ("\\", stream); - do_fprintf (stream, "%c", c); - } -} - -/* Print the character C on STREAM as part of the contents of a - literal string whose delimiter is QUOTER. Note that these routines - should only be call for printing things which are independent of - the language of the program being debugged. */ - -void -fputstr_filtered (const char *str, int quoter, struct ui_file *stream) -{ - while (*str) - printchar (*str++, fputs_filtered, fprintf_filtered, stream, quoter); -} - -void -fputstr_unfiltered (const char *str, int quoter, struct ui_file *stream) -{ - while (*str) - printchar (*str++, fputs_unfiltered, fprintf_unfiltered, stream, quoter); -} - -void -fputstrn_unfiltered (const char *str, int n, int quoter, struct ui_file *stream) -{ - int i; - for (i = 0; i < n; i++) - printchar (str[i], fputs_unfiltered, fprintf_unfiltered, stream, quoter); -} - - - -/* Number of lines per page or UINT_MAX if paging is disabled. */ -static unsigned int lines_per_page; -/* Number of chars per line or UINT_MAX if line folding is disabled. */ -static unsigned int chars_per_line; -/* Current count of lines printed on this page, chars on this line. */ -static unsigned int lines_printed, chars_printed; - -/* Buffer and start column of buffered text, for doing smarter word- - wrapping. When someone calls wrap_here(), we start buffering output - that comes through fputs_filtered(). If we see a newline, we just - spit it out and forget about the wrap_here(). If we see another - wrap_here(), we spit it out and remember the newer one. If we see - the end of the line, we spit out a newline, the indent, and then - the buffered output. */ - -/* Malloc'd buffer with chars_per_line+2 bytes. Contains characters which - are waiting to be output (they have already been counted in chars_printed). - When wrap_buffer[0] is null, the buffer is empty. */ -static char *wrap_buffer; - -/* Pointer in wrap_buffer to the next character to fill. */ -static char *wrap_pointer; - -/* String to indent by if the wrap occurs. Must not be NULL if wrap_column - is non-zero. */ -static char *wrap_indent; - -/* Column number on the screen where wrap_buffer begins, or 0 if wrapping - is not in effect. */ -static int wrap_column; - - -/* Inialize the lines and chars per page */ -void -init_page_info (void) -{ -#if defined(TUI) - if (!tui_get_command_dimension (&chars_per_line, &lines_per_page)) -#endif - { - /* These defaults will be used if we are unable to get the correct - values from termcap. */ -#if defined(__GO32__) - lines_per_page = ScreenRows (); - chars_per_line = ScreenCols (); -#else - lines_per_page = 24; - chars_per_line = 80; - -#if !defined (_WIN32) - /* No termcap under MPW, although might be cool to do something - by looking at worksheet or console window sizes. */ - /* Initialize the screen height and width from termcap. */ - { - char *termtype = getenv ("TERM"); - - /* Positive means success, nonpositive means failure. */ - int status; - - /* 2048 is large enough for all known terminals, according to the - GNU termcap manual. */ - char term_buffer[2048]; - - if (termtype) - { - status = tgetent (term_buffer, termtype); - if (status > 0) - { - int val; - int running_in_emacs = getenv ("EMACS") != NULL; - - val = tgetnum ("li"); - if (val >= 0 && !running_in_emacs) - lines_per_page = val; - else - /* The number of lines per page is not mentioned - in the terminal description. This probably means - that paging is not useful (e.g. emacs shell window), - so disable paging. */ - lines_per_page = UINT_MAX; - - val = tgetnum ("co"); - if (val >= 0) - chars_per_line = val; - } - } - } -#endif /* MPW */ - -#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) - - /* If there is a better way to determine the window size, use it. */ - SIGWINCH_HANDLER (SIGWINCH); -#endif -#endif - /* If the output is not a terminal, don't paginate it. */ - if (!ui_file_isatty (gdb_stdout)) - lines_per_page = UINT_MAX; - } /* the command_line_version */ - set_width (); -} - -static void -set_width (void) -{ - if (chars_per_line == 0) - init_page_info (); - - if (!wrap_buffer) - { - wrap_buffer = (char *) xmalloc (chars_per_line + 2); - wrap_buffer[0] = '\0'; - } - else - wrap_buffer = (char *) xrealloc (wrap_buffer, chars_per_line + 2); - wrap_pointer = wrap_buffer; /* Start it at the beginning */ -} - -/* ARGSUSED */ -static void -set_width_command (char *args, int from_tty, struct cmd_list_element *c) -{ - set_width (); -} - -/* Wait, so the user can read what's on the screen. Prompt the user - to continue by pressing RETURN. */ - -static void -prompt_for_continue (void) -{ - char *ignore; - char cont_prompt[120]; - - if (annotation_level > 1) - printf_unfiltered ("\n\032\032pre-prompt-for-continue\n"); - - strcpy (cont_prompt, - "---Type <return> to continue, or q <return> to quit---"); - if (annotation_level > 1) - strcat (cont_prompt, "\n\032\032prompt-for-continue\n"); - - /* We must do this *before* we call gdb_readline, else it will eventually - call us -- thinking that we're trying to print beyond the end of the - screen. */ - reinitialize_more_filter (); - - immediate_quit++; - /* On a real operating system, the user can quit with SIGINT. - But not on GO32. - - 'q' is provided on all systems so users don't have to change habits - from system to system, and because telling them what to do in - the prompt is more user-friendly than expecting them to think of - SIGINT. */ - /* Call readline, not gdb_readline, because GO32 readline handles control-C - whereas control-C to gdb_readline will cause the user to get dumped - out to DOS. */ - ignore = readline (cont_prompt); - - if (annotation_level > 1) - printf_unfiltered ("\n\032\032post-prompt-for-continue\n"); - - if (ignore) - { - char *p = ignore; - while (*p == ' ' || *p == '\t') - ++p; - if (p[0] == 'q') - { - if (!event_loop_p) - request_quit (SIGINT); - else - async_request_quit (0); - } - xfree (ignore); - } - immediate_quit--; - - /* Now we have to do this again, so that GDB will know that it doesn't - need to save the ---Type <return>--- line at the top of the screen. */ - reinitialize_more_filter (); - - dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ -} - -/* Reinitialize filter; ie. tell it to reset to original values. */ - -void -reinitialize_more_filter (void) -{ - lines_printed = 0; - chars_printed = 0; -} - -/* Indicate that if the next sequence of characters overflows the line, - a newline should be inserted here rather than when it hits the end. - If INDENT is non-null, it is a string to be printed to indent the - wrapped part on the next line. INDENT must remain accessible until - the next call to wrap_here() or until a newline is printed through - fputs_filtered(). - - If the line is already overfull, we immediately print a newline and - the indentation, and disable further wrapping. - - If we don't know the width of lines, but we know the page height, - we must not wrap words, but should still keep track of newlines - that were explicitly printed. - - INDENT should not contain tabs, as that will mess up the char count - on the next line. FIXME. - - This routine is guaranteed to force out any output which has been - squirreled away in the wrap_buffer, so wrap_here ((char *)0) can be - used to force out output from the wrap_buffer. */ - -void -wrap_here (char *indent) -{ - /* This should have been allocated, but be paranoid anyway. */ - if (!wrap_buffer) - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - - if (wrap_buffer[0]) - { - *wrap_pointer = '\0'; - fputs_unfiltered (wrap_buffer, gdb_stdout); - } - wrap_pointer = wrap_buffer; - wrap_buffer[0] = '\0'; - if (chars_per_line == UINT_MAX) /* No line overflow checking */ - { - wrap_column = 0; - } - else if (chars_printed >= chars_per_line) - { - puts_filtered ("\n"); - if (indent != NULL) - puts_filtered (indent); - wrap_column = 0; - } - else - { - wrap_column = chars_printed; - if (indent == NULL) - wrap_indent = ""; - else - wrap_indent = indent; - } -} - -/* Ensure that whatever gets printed next, using the filtered output - commands, starts at the beginning of the line. I.E. if there is - any pending output for the current line, flush it and start a new - line. Otherwise do nothing. */ - -void -begin_line (void) -{ - if (chars_printed > 0) - { - puts_filtered ("\n"); - } -} - - -/* Like fputs but if FILTER is true, pause after every screenful. - - Regardless of FILTER can wrap at points other than the final - character of a line. - - Unlike fputs, fputs_maybe_filtered does not return a value. - It is OK for LINEBUFFER to be NULL, in which case just don't print - anything. - - Note that a longjmp to top level may occur in this routine (only if - FILTER is true) (since prompt_for_continue may do so) so this - routine should not be called when cleanups are not in place. */ - -static void -fputs_maybe_filtered (const char *linebuffer, struct ui_file *stream, - int filter) -{ - const char *lineptr; - - if (linebuffer == 0) - return; - - /* Don't do any filtering if it is disabled. */ - if ((stream != gdb_stdout) || !pagination_enabled - || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) - { - fputs_unfiltered (linebuffer, stream); - return; - } - - /* Go through and output each character. Show line extension - when this is necessary; prompt user for new page when this is - necessary. */ - - lineptr = linebuffer; - while (*lineptr) - { - /* Possible new page. */ - if (filter && - (lines_printed >= lines_per_page - 1)) - prompt_for_continue (); - - while (*lineptr && *lineptr != '\n') - { - /* Print a single line. */ - if (*lineptr == '\t') - { - if (wrap_column) - *wrap_pointer++ = '\t'; - else - fputc_unfiltered ('\t', stream); - /* Shifting right by 3 produces the number of tab stops - we have already passed, and then adding one and - shifting left 3 advances to the next tab stop. */ - chars_printed = ((chars_printed >> 3) + 1) << 3; - lineptr++; - } - else - { - if (wrap_column) - *wrap_pointer++ = *lineptr; - else - fputc_unfiltered (*lineptr, stream); - chars_printed++; - lineptr++; - } - - if (chars_printed >= chars_per_line) - { - unsigned int save_chars = chars_printed; - - chars_printed = 0; - lines_printed++; - /* If we aren't actually wrapping, don't output newline -- - if chars_per_line is right, we probably just overflowed - anyway; if it's wrong, let us keep going. */ - if (wrap_column) - fputc_unfiltered ('\n', stream); - - /* Possible new page. */ - if (lines_printed >= lines_per_page - 1) - prompt_for_continue (); - - /* Now output indentation and wrapped string */ - if (wrap_column) - { - fputs_unfiltered (wrap_indent, stream); - *wrap_pointer = '\0'; /* Null-terminate saved stuff */ - fputs_unfiltered (wrap_buffer, stream); /* and eject it */ - /* FIXME, this strlen is what prevents wrap_indent from - containing tabs. However, if we recurse to print it - and count its chars, we risk trouble if wrap_indent is - longer than (the user settable) chars_per_line. - Note also that this can set chars_printed > chars_per_line - if we are printing a long string. */ - chars_printed = strlen (wrap_indent) - + (save_chars - wrap_column); - wrap_pointer = wrap_buffer; /* Reset buffer */ - wrap_buffer[0] = '\0'; - wrap_column = 0; /* And disable fancy wrap */ - } - } - } - - if (*lineptr == '\n') - { - chars_printed = 0; - wrap_here ((char *) 0); /* Spit out chars, cancel further wraps */ - lines_printed++; - fputc_unfiltered ('\n', stream); - lineptr++; - } - } -} - -void -fputs_filtered (const char *linebuffer, struct ui_file *stream) -{ - fputs_maybe_filtered (linebuffer, stream, 1); -} - -int -putchar_unfiltered (int c) -{ - char buf = c; - ui_file_write (gdb_stdout, &buf, 1); - return c; -} - -/* Write character C to gdb_stdout using GDB's paging mechanism and return C. - May return nonlocally. */ - -int -putchar_filtered (int c) -{ - return fputc_filtered (c, gdb_stdout); -} - -int -fputc_unfiltered (int c, struct ui_file *stream) -{ - char buf = c; - ui_file_write (stream, &buf, 1); - return c; -} - -int -fputc_filtered (int c, struct ui_file *stream) -{ - char buf[2]; - - buf[0] = c; - buf[1] = 0; - fputs_filtered (buf, stream); - return c; -} - -/* puts_debug is like fputs_unfiltered, except it prints special - characters in printable fashion. */ - -void -puts_debug (char *prefix, char *string, char *suffix) -{ - int ch; - - /* Print prefix and suffix after each line. */ - static int new_line = 1; - static int return_p = 0; - static char *prev_prefix = ""; - static char *prev_suffix = ""; - - if (*string == '\n') - return_p = 0; - - /* If the prefix is changing, print the previous suffix, a new line, - and the new prefix. */ - if ((return_p || (strcmp (prev_prefix, prefix) != 0)) && !new_line) - { - fputs_unfiltered (prev_suffix, gdb_stdlog); - fputs_unfiltered ("\n", gdb_stdlog); - fputs_unfiltered (prefix, gdb_stdlog); - } - - /* Print prefix if we printed a newline during the previous call. */ - if (new_line) - { - new_line = 0; - fputs_unfiltered (prefix, gdb_stdlog); - } - - prev_prefix = prefix; - prev_suffix = suffix; - - /* Output characters in a printable format. */ - while ((ch = *string++) != '\0') - { - switch (ch) - { - default: - if (isprint (ch)) - fputc_unfiltered (ch, gdb_stdlog); - - else - fprintf_unfiltered (gdb_stdlog, "\\x%02x", ch & 0xff); - break; - - case '\\': - fputs_unfiltered ("\\\\", gdb_stdlog); - break; - case '\b': - fputs_unfiltered ("\\b", gdb_stdlog); - break; - case '\f': - fputs_unfiltered ("\\f", gdb_stdlog); - break; - case '\n': - new_line = 1; - fputs_unfiltered ("\\n", gdb_stdlog); - break; - case '\r': - fputs_unfiltered ("\\r", gdb_stdlog); - break; - case '\t': - fputs_unfiltered ("\\t", gdb_stdlog); - break; - case '\v': - fputs_unfiltered ("\\v", gdb_stdlog); - break; - } - - return_p = ch == '\r'; - } - - /* Print suffix if we printed a newline. */ - if (new_line) - { - fputs_unfiltered (suffix, gdb_stdlog); - fputs_unfiltered ("\n", gdb_stdlog); - } -} - - -/* Print a variable number of ARGS using format FORMAT. If this - information is going to put the amount written (since the last call - to REINITIALIZE_MORE_FILTER or the last page break) over the page size, - call prompt_for_continue to get the users permision to continue. - - Unlike fprintf, this function does not return a value. - - We implement three variants, vfprintf (takes a vararg list and stream), - fprintf (takes a stream to write on), and printf (the usual). - - Note also that a longjmp to top level may occur in this routine - (since prompt_for_continue may do so) so this routine should not be - called when cleanups are not in place. */ - -static void -vfprintf_maybe_filtered (struct ui_file *stream, const char *format, - va_list args, int filter) -{ - char *linebuffer; - struct cleanup *old_cleanups; - - xvasprintf (&linebuffer, format, args); - old_cleanups = make_cleanup (xfree, linebuffer); - fputs_maybe_filtered (linebuffer, stream, filter); - do_cleanups (old_cleanups); -} - - -void -vfprintf_filtered (struct ui_file *stream, const char *format, va_list args) -{ - vfprintf_maybe_filtered (stream, format, args, 1); -} - -void -vfprintf_unfiltered (struct ui_file *stream, const char *format, va_list args) -{ - char *linebuffer; - struct cleanup *old_cleanups; - - xvasprintf (&linebuffer, format, args); - old_cleanups = make_cleanup (xfree, linebuffer); - fputs_unfiltered (linebuffer, stream); - do_cleanups (old_cleanups); -} - -void -vprintf_filtered (const char *format, va_list args) -{ - vfprintf_maybe_filtered (gdb_stdout, format, args, 1); -} - -void -vprintf_unfiltered (const char *format, va_list args) -{ - vfprintf_unfiltered (gdb_stdout, format, args); -} - -void -fprintf_filtered (struct ui_file * stream, const char *format,...) -{ - va_list args; - va_start (args, format); - vfprintf_filtered (stream, format, args); - va_end (args); -} - -void -fprintf_unfiltered (struct ui_file * stream, const char *format,...) -{ - va_list args; - va_start (args, format); - vfprintf_unfiltered (stream, format, args); - va_end (args); -} - -/* Like fprintf_filtered, but prints its result indented. - Called as fprintfi_filtered (spaces, stream, format, ...); */ - -void -fprintfi_filtered (int spaces, struct ui_file * stream, const char *format,...) -{ - va_list args; - va_start (args, format); - print_spaces_filtered (spaces, stream); - - vfprintf_filtered (stream, format, args); - va_end (args); -} - - -void -printf_filtered (const char *format,...) -{ - va_list args; - va_start (args, format); - vfprintf_filtered (gdb_stdout, format, args); - va_end (args); -} - - -void -printf_unfiltered (const char *format,...) -{ - va_list args; - va_start (args, format); - vfprintf_unfiltered (gdb_stdout, format, args); - va_end (args); -} - -/* Like printf_filtered, but prints it's result indented. - Called as printfi_filtered (spaces, format, ...); */ - -void -printfi_filtered (int spaces, const char *format,...) -{ - va_list args; - va_start (args, format); - print_spaces_filtered (spaces, gdb_stdout); - vfprintf_filtered (gdb_stdout, format, args); - va_end (args); -} - -/* Easy -- but watch out! - - This routine is *not* a replacement for puts()! puts() appends a newline. - This one doesn't, and had better not! */ - -void -puts_filtered (const char *string) -{ - fputs_filtered (string, gdb_stdout); -} - -void -puts_unfiltered (const char *string) -{ - fputs_unfiltered (string, gdb_stdout); -} - -/* Return a pointer to N spaces and a null. The pointer is good - until the next call to here. */ -char * -n_spaces (int n) -{ - char *t; - static char *spaces = 0; - static int max_spaces = -1; - - if (n > max_spaces) - { - if (spaces) - xfree (spaces); - spaces = (char *) xmalloc (n + 1); - for (t = spaces + n; t != spaces;) - *--t = ' '; - spaces[n] = '\0'; - max_spaces = n; - } - - return spaces + max_spaces - n; -} - -/* Print N spaces. */ -void -print_spaces_filtered (int n, struct ui_file *stream) -{ - fputs_filtered (n_spaces (n), stream); -} - -/* C++ demangler stuff. */ - -/* fprintf_symbol_filtered attempts to demangle NAME, a symbol in language - LANG, using demangling args ARG_MODE, and print it filtered to STREAM. - If the name is not mangled, or the language for the name is unknown, or - demangling is off, the name is printed in its "raw" form. */ - -void -fprintf_symbol_filtered (struct ui_file *stream, char *name, enum language lang, - int arg_mode) -{ - char *demangled; - - if (name != NULL) - { - /* If user wants to see raw output, no problem. */ - if (!demangle) - { - fputs_filtered (name, stream); - } - else - { - switch (lang) - { - case language_cplus: - demangled = cplus_demangle (name, arg_mode); - break; - case language_java: - demangled = cplus_demangle (name, arg_mode | DMGL_JAVA); - break; - case language_chill: - demangled = chill_demangle (name); - break; - default: - demangled = NULL; - break; - } - fputs_filtered (demangled ? demangled : name, stream); - if (demangled != NULL) - { - xfree (demangled); - } - } - } -} - -/* Do a strcmp() type operation on STRING1 and STRING2, ignoring any - differences in whitespace. Returns 0 if they match, non-zero if they - don't (slightly different than strcmp()'s range of return values). - - As an extra hack, string1=="FOO(ARGS)" matches string2=="FOO". - This "feature" is useful when searching for matching C++ function names - (such as if the user types 'break FOO', where FOO is a mangled C++ - function). */ - -int -strcmp_iw (const char *string1, const char *string2) -{ - while ((*string1 != '\0') && (*string2 != '\0')) - { - while (isspace (*string1)) - { - string1++; - } - while (isspace (*string2)) - { - string2++; - } - if (*string1 != *string2) - { - break; - } - if (*string1 != '\0') - { - string1++; - string2++; - } - } - return (*string1 != '\0' && *string1 != '(') || (*string2 != '\0'); -} - - -/* - ** subset_compare() - ** Answer whether string_to_compare is a full or partial match to - ** template_string. The partial match must be in sequence starting - ** at index 0. - */ -int -subset_compare (char *string_to_compare, char *template_string) -{ - int match; - if (template_string != (char *) NULL && string_to_compare != (char *) NULL && - strlen (string_to_compare) <= strlen (template_string)) - match = (strncmp (template_string, - string_to_compare, - strlen (string_to_compare)) == 0); - else - match = 0; - return match; -} - - -static void pagination_on_command (char *arg, int from_tty); -static void -pagination_on_command (char *arg, int from_tty) -{ - pagination_enabled = 1; -} - -static void pagination_on_command (char *arg, int from_tty); -static void -pagination_off_command (char *arg, int from_tty) -{ - pagination_enabled = 0; -} - - -void -initialize_utils (void) -{ - struct cmd_list_element *c; - - c = add_set_cmd ("width", class_support, var_uinteger, - (char *) &chars_per_line, - "Set number of characters gdb thinks are in a line.", - &setlist); - add_show_from_set (c, &showlist); - set_cmd_sfunc (c, set_width_command); - - add_show_from_set - (add_set_cmd ("height", class_support, - var_uinteger, (char *) &lines_per_page, - "Set number of lines gdb thinks are in a page.", &setlist), - &showlist); - - init_page_info (); - - /* If the output is not a terminal, don't paginate it. */ - if (!ui_file_isatty (gdb_stdout)) - lines_per_page = UINT_MAX; - - set_width_command ((char *) NULL, 0, c); - - add_show_from_set - (add_set_cmd ("demangle", class_support, var_boolean, - (char *) &demangle, - "Set demangling of encoded C++ names when displaying symbols.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("pagination", class_support, - var_boolean, (char *) &pagination_enabled, - "Set state of pagination.", &setlist), - &showlist); - - if (xdb_commands) - { - add_com ("am", class_support, pagination_on_command, - "Enable pagination"); - add_com ("sm", class_support, pagination_off_command, - "Disable pagination"); - } - - add_show_from_set - (add_set_cmd ("sevenbit-strings", class_support, var_boolean, - (char *) &sevenbit_strings, - "Set printing of 8-bit characters in strings as \\nnn.", - &setprintlist), - &showprintlist); - - add_show_from_set - (add_set_cmd ("asm-demangle", class_support, var_boolean, - (char *) &asm_demangle, - "Set demangling of C++ names in disassembly listings.", - &setprintlist), - &showprintlist); -} - -/* Machine specific function to handle SIGWINCH signal. */ - -#ifdef SIGWINCH_HANDLER_BODY -SIGWINCH_HANDLER_BODY -#endif - -/* print routines to handle variable size regs, etc. */ - -/* temporary storage using circular buffer */ -#define NUMCELLS 16 -#define CELLSIZE 32 -static char * -get_cell (void) -{ - static char buf[NUMCELLS][CELLSIZE]; - static int cell = 0; - if (++cell >= NUMCELLS) - cell = 0; - return buf[cell]; -} - -int -strlen_paddr (void) -{ - return (TARGET_ADDR_BIT / 8 * 2); -} - -char * -paddr (CORE_ADDR addr) -{ - return phex (addr, TARGET_ADDR_BIT / 8); -} - -char * -paddr_nz (CORE_ADDR addr) -{ - return phex_nz (addr, TARGET_ADDR_BIT / 8); -} - -static void -decimal2str (char *paddr_str, char *sign, ULONGEST addr) -{ - /* steal code from valprint.c:print_decimal(). Should this worry - about the real size of addr as the above does? */ - unsigned long temp[3]; - int i = 0; - do - { - temp[i] = addr % (1000 * 1000 * 1000); - addr /= (1000 * 1000 * 1000); - i++; - } - while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); - switch (i) - { - case 1: - sprintf (paddr_str, "%s%lu", - sign, temp[0]); - break; - case 2: - sprintf (paddr_str, "%s%lu%09lu", - sign, temp[1], temp[0]); - break; - case 3: - sprintf (paddr_str, "%s%lu%09lu%09lu", - sign, temp[2], temp[1], temp[0]); - break; - default: - internal_error (__FILE__, __LINE__, "failed internal consistency check"); - } -} - -char * -paddr_u (CORE_ADDR addr) -{ - char *paddr_str = get_cell (); - decimal2str (paddr_str, "", addr); - return paddr_str; -} - -char * -paddr_d (LONGEST addr) -{ - char *paddr_str = get_cell (); - if (addr < 0) - decimal2str (paddr_str, "-", -addr); - else - decimal2str (paddr_str, "", addr); - return paddr_str; -} - -/* eliminate warning from compiler on 32-bit systems */ -static int thirty_two = 32; - -char * -phex (ULONGEST l, int sizeof_l) -{ - char *str; - switch (sizeof_l) - { - case 8: - str = get_cell (); - sprintf (str, "%08lx%08lx", - (unsigned long) (l >> thirty_two), - (unsigned long) (l & 0xffffffff)); - break; - case 4: - str = get_cell (); - sprintf (str, "%08lx", (unsigned long) l); - break; - case 2: - str = get_cell (); - sprintf (str, "%04x", (unsigned short) (l & 0xffff)); - break; - default: - str = phex (l, sizeof (l)); - break; - } - return str; -} - -char * -phex_nz (ULONGEST l, int sizeof_l) -{ - char *str; - switch (sizeof_l) - { - case 8: - { - unsigned long high = (unsigned long) (l >> thirty_two); - str = get_cell (); - if (high == 0) - sprintf (str, "%lx", (unsigned long) (l & 0xffffffff)); - else - sprintf (str, "%lx%08lx", - high, (unsigned long) (l & 0xffffffff)); - break; - } - case 4: - str = get_cell (); - sprintf (str, "%lx", (unsigned long) l); - break; - case 2: - str = get_cell (); - sprintf (str, "%x", (unsigned short) (l & 0xffff)); - break; - default: - str = phex_nz (l, sizeof (l)); - break; - } - return str; -} - - -/* Convert to / from the hosts pointer to GDB's internal CORE_ADDR - using the target's conversion routines. */ -CORE_ADDR -host_pointer_to_address (void *ptr) -{ - if (sizeof (ptr) != TYPE_LENGTH (builtin_type_void_data_ptr)) - internal_error (__FILE__, __LINE__, - "core_addr_to_void_ptr: bad cast"); - return POINTER_TO_ADDRESS (builtin_type_void_data_ptr, &ptr); -} - -void * -address_to_host_pointer (CORE_ADDR addr) -{ - void *ptr; - if (sizeof (ptr) != TYPE_LENGTH (builtin_type_void_data_ptr)) - internal_error (__FILE__, __LINE__, - "core_addr_to_void_ptr: bad cast"); - ADDRESS_TO_POINTER (builtin_type_void_data_ptr, &ptr, addr); - return ptr; -} - -/* Convert a CORE_ADDR into a string. */ -const char * -core_addr_to_string (const CORE_ADDR addr) -{ - char *str = get_cell (); - strcpy (str, "0x"); - strcat (str, phex_nz (addr, sizeof (addr))); - return str; -} - -/* Convert a string back into a CORE_ADDR. */ -CORE_ADDR -string_to_core_addr (const char *my_string) -{ - CORE_ADDR addr = 0; - if (my_string[0] == '0' && tolower (my_string[1]) == 'x') - { - /* Assume that it is in decimal. */ - int i; - for (i = 2; my_string[i] != '\0'; i++) - { - if (isdigit (my_string[i])) - addr = (my_string[i] - '0') + (addr * 16); - else if (isxdigit (my_string[i])) - addr = (tolower (my_string[i]) - 'a' + 0xa) + (addr * 16); - else - internal_error (__FILE__, __LINE__, "invalid hex"); - } - } - else - { - /* Assume that it is in decimal. */ - int i; - for (i = 0; my_string[i] != '\0'; i++) - { - if (isdigit (my_string[i])) - addr = (my_string[i] - '0') + (addr * 10); - else - internal_error (__FILE__, __LINE__, "invalid decimal"); - } - } - return addr; -} - -char * -gdb_realpath (const char *filename) -{ -#ifdef HAVE_REALPATH -#if defined (PATH_MAX) - char buf[PATH_MAX]; -#elif defined (MAXPATHLEN) - char buf[MAXPATHLEN]; -#else -#error "Neither PATH_MAX nor MAXPATHLEN defined" -#endif - char *rp = realpath (filename, buf); - return xstrdup (rp ? rp : filename); -#else - return xstrdup (filename); -#endif -} |