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Diffstat (limited to 'gdb/utils.c')
| -rw-r--r-- | gdb/utils.c | 2933 |
1 files changed, 0 insertions, 2933 deletions
diff --git a/gdb/utils.c b/gdb/utils.c deleted file mode 100644 index 81c4452..0000000 --- a/gdb/utils.c +++ /dev/null @@ -1,2933 +0,0 @@ -/* General utility routines for GDB, the GNU debugger. - Copyright 1986, 89, 90, 91, 92, 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 "defs.h" -#include <ctype.h> -#include "gdb_string.h" -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif - -#ifdef HAVE_CURSES_H -#include <curses.h> -#endif -#ifdef HAVE_TERM_H -#include <term.h> -#endif - -/* SunOS's curses.h has a '#define reg register' in it. Thank you Sun. */ -#ifdef reg -#undef reg -#endif - -#include "signals.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 <readline/readline.h> - -/* readline defines this. */ -#undef savestring - -void (*error_begin_hook) PARAMS ((void)); - -/* Prototypes for local functions */ - -static void vfprintf_maybe_filtered PARAMS ((GDB_FILE *, const char *, - va_list, int)); - -static void fputs_maybe_filtered PARAMS ((const char *, GDB_FILE *, int)); - -#if defined (USE_MMALLOC) && !defined (NO_MMCHECK) -static void malloc_botch PARAMS ((void)); -#endif - -static void -fatal_dump_core PARAMS((char *, ...)); - -static void -prompt_for_continue PARAMS ((void)); - -static void -set_width_command PARAMS ((char *, int, struct cmd_list_element *)); - -static void -set_width PARAMS ((void)); - -/* If this definition isn't overridden by the header files, assume - that isatty and fileno exist on this system. */ -#ifndef ISATTY -#define ISATTY(FP) (isatty (fileno (FP))) -#endif - -#ifndef GDB_FILE_ISATTY -#define GDB_FILE_ISATTY(GDB_FILE_PTR) (gdb_file_isatty(GDB_FILE_PTR)) -#endif - -/* 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' */ - -/* 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 (function, arg) - void (*function) PARAMS ((PTR)); - PTR arg; -{ - return make_my_cleanup (&cleanup_chain, function, arg); -} - -struct cleanup * -make_final_cleanup (function, arg) - void (*function) PARAMS ((PTR)); - PTR arg; -{ - return make_my_cleanup (&final_cleanup_chain, function, arg); -} -struct cleanup * -make_run_cleanup (function, arg) - void (*function) PARAMS ((PTR)); - PTR arg; -{ - return make_my_cleanup (&run_cleanup_chain, function, arg); -} -struct cleanup * -make_my_cleanup (pmy_chain, function, arg) - struct cleanup **pmy_chain; - void (*function) PARAMS ((PTR)); - PTR 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 (old_chain) - register struct cleanup *old_chain; -{ - do_my_cleanups (&cleanup_chain, old_chain); -} - -void -do_final_cleanups (old_chain) - register struct cleanup *old_chain; -{ - do_my_cleanups (&final_cleanup_chain, old_chain); -} - -void -do_run_cleanups (old_chain) - register struct cleanup *old_chain; -{ - do_my_cleanups (&run_cleanup_chain, old_chain); -} - -void -do_my_cleanups (pmy_chain, old_chain) - 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); - free (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 (old_chain) - register struct cleanup *old_chain; -{ - discard_my_cleanups (&cleanup_chain, old_chain); -} - -void -discard_final_cleanups (old_chain) - register struct cleanup *old_chain; -{ - discard_my_cleanups (&final_cleanup_chain, old_chain); -} - -void -discard_my_cleanups (pmy_chain, old_chain) - register struct cleanup **pmy_chain; - register struct cleanup *old_chain; -{ - register struct cleanup *ptr; - while ((ptr = *pmy_chain) != old_chain) - { - *pmy_chain = ptr->next; - free ((PTR)ptr); - } -} - -/* Set the cleanup_chain to 0, and return the old cleanup chain. */ -struct cleanup * -save_cleanups () -{ - return save_my_cleanups (&cleanup_chain); -} - -struct cleanup * -save_final_cleanups () -{ - return save_my_cleanups (&final_cleanup_chain); -} - -struct cleanup * -save_my_cleanups (pmy_chain) - 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 (chain) - struct cleanup *chain; -{ - restore_my_cleanups (&cleanup_chain, chain); -} - -void -restore_final_cleanups (chain) - struct cleanup *chain; -{ - restore_my_cleanups (&final_cleanup_chain, chain); -} - -void -restore_my_cleanups (pmy_chain, chain) - 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 (location) - char **location; -{ - free (*location); -} - -/* 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 (arg) - PTR arg; -{ -} - - -/* Print a warning message. Way to use this is to call warning_begin, - output the warning message (use unfiltered output to gdb_stderr), - ending in a newline. There is not currently a warning_end that you - call afterwards, but such a thing might be added if it is useful - for a GUI to separate warning messages from other output. - - FIXME: Why do warnings use unfiltered output and errors filtered? - Is this anything other than a historical accident? */ - -void -warning_begin () -{ - 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); -} - -/* 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. */ - -/* VARARGS */ -void -#ifdef ANSI_PROTOTYPES -warning (const char *string, ...) -#else -warning (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, string); -#else - char *string; - - va_start (args); - string = va_arg (args, char *); -#endif - if (warning_hook) - (*warning_hook) (string, args); - else - { - warning_begin (); - vfprintf_unfiltered (gdb_stderr, string, args); - fprintf_unfiltered (gdb_stderr, "\n"); - va_end (args); - } -} - -/* Start the printing of an error message. Way to use this is to call - this, output the error message (use filtered output to gdb_stderr - (FIXME: Some callers, like memory_error, use gdb_stdout)), ending - in a newline, and then call return_to_top_level (RETURN_ERROR). - error() provides a convenient way to do this for the special case - that the error message can be formatted with a single printf call, - but this is more general. */ -void -error_begin () -{ - if (error_begin_hook) - error_begin_hook (); - - 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); -} - -/* 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. */ - -/* VARARGS */ -NORETURN void -#ifdef ANSI_PROTOTYPES -error (const char *string, ...) -#else -error (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, string); -#else - va_start (args); -#endif - if (error_hook) - (*error_hook) (); - else - { - error_begin (); -#ifdef ANSI_PROTOTYPES - vfprintf_filtered (gdb_stderr, string, args); -#else - { - char *string1; - - string1 = va_arg (args, char *); - vfprintf_filtered (gdb_stderr, string1, args); - } -#endif - fprintf_filtered (gdb_stderr, "\n"); - va_end (args); - return_to_top_level (RETURN_ERROR); - } -} - - -/* Print an error message and exit reporting failure. - This is for a error that we cannot continue from. - The arguments are printed a la printf. - - This function cannot be declared volatile (NORETURN) in an - ANSI environment because exit() is not declared volatile. */ - -/* VARARGS */ -NORETURN void -#ifdef ANSI_PROTOTYPES -fatal (char *string, ...) -#else -fatal (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, string); -#else - char *string; - va_start (args); - string = va_arg (args, char *); -#endif - fprintf_unfiltered (gdb_stderr, "\ngdb: "); - vfprintf_unfiltered (gdb_stderr, string, args); - fprintf_unfiltered (gdb_stderr, "\n"); - va_end (args); - exit (1); -} - -/* Print an error message and exit, dumping core. - The arguments are printed a la printf (). */ - -/* VARARGS */ -static void -#ifdef ANSI_PROTOTYPES -fatal_dump_core (char *string, ...) -#else -fatal_dump_core (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, string); -#else - char *string; - - va_start (args); - string = va_arg (args, char *); -#endif - /* "internal error" is always correct, since GDB should never dump - core, no matter what the input. */ - fprintf_unfiltered (gdb_stderr, "\ngdb internal error: "); - vfprintf_unfiltered (gdb_stderr, string, args); - fprintf_unfiltered (gdb_stderr, "\n"); - va_end (args); - - signal (SIGQUIT, SIG_DFL); - kill (getpid (), SIGQUIT); - /* We should never get here, but just in case... */ - exit (1); -} - -/* 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 (errnum) - int errnum; -{ - char *msg; - static char buf[32]; - - if ((msg = strerror (errnum)) == NULL) - { - sprintf (buf, "(undocumented errno %d)", errnum); - msg = buf; - } - return (msg); -} - -/* The strsignal() function can return NULL for signal values that are - out of range. Provide a "safe" version that always returns a - printable string. */ - -char * -safe_strsignal (signo) - int signo; -{ - char *msg; - static char buf[32]; - - if ((msg = strsignal (signo)) == NULL) - { - sprintf (buf, "(undocumented signal %d)", signo); - 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 (string) - 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 (string, errcode) - 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 () -{ - serial_t 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); - - 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"); - return_to_top_level (RETURN_QUIT); -} - - -#if defined(__GO32__) - -/* In the absence of signals, poll keyboard for a quit. - Called from #define QUIT pollquit() in xm-go32.h. */ - -void -notice_quit() -{ - if (kbhit ()) - switch (getkey ()) - { - case 1: - quit_flag = 1; - break; - case 2: - immediate_quit = 2; - break; - default: - /* We just ignore it */ - /* FIXME!! Don't think this actually works! */ - fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n"); - break; - } -} - -#elif defined(_MSC_VER) /* should test for wingdb instead? */ - -/* - * Windows translates all keyboard and mouse events - * into a message which is appended to the message - * queue for the process. - */ - -void notice_quit() -{ - int k = win32pollquit(); - if (k == 1) - quit_flag = 1; - else if (k == 2) - immediate_quit = 1; -} - -#else /* !defined(__GO32__) && !defined(_MSC_VER) */ - -void notice_quit() -{ - /* Done by signals */ -} - -#endif /* !defined(__GO32__) && !defined(_MSC_VER) */ - -void -pollquit() -{ - notice_quit (); - if (quit_flag || immediate_quit) - quit (); -} - -/* Control C comes here */ - -void -request_quit (signo) - 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). */ - -/* Make a substitute size_t for non-ANSI compilers. */ - -#ifndef HAVE_STDDEF_H -#ifndef size_t -#define size_t unsigned int -#endif -#endif - -#if !defined (USE_MMALLOC) - -PTR -mmalloc (md, size) - PTR md; - size_t size; -{ - return malloc (size); -} - -PTR -mrealloc (md, ptr, size) - PTR md; - PTR ptr; - size_t size; -{ - if (ptr == 0) /* Guard against old realloc's */ - return malloc (size); - else - return realloc (ptr, size); -} - -void -mfree (md, ptr) - PTR md; - PTR ptr; -{ - free (ptr); -} - -#endif /* USE_MMALLOC */ - -#if !defined (USE_MMALLOC) || defined (NO_MMCHECK) - -void -init_malloc (md) - PTR md; -{ -} - -#else /* Have mmalloc and want corruption checking */ - -static void -malloc_botch () -{ - fatal_dump_core ("Memory corruption"); -} - -/* 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 (md) - PTR 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 (size) - long size; -{ - if (size > 0) - { - fatal ("virtual memory exhausted: can't allocate %ld bytes.", size); - } - else - { - fatal ("virtual memory exhausted."); - } -} - -/* Like mmalloc but get error if no storage available, and protect against - the caller wanting to allocate zero bytes. Whether to return NULL for - a zero byte request, or translate the request into a request for one - byte of zero'd storage, is a religious issue. */ - -PTR -xmmalloc (md, size) - PTR md; - long size; -{ - register PTR val; - - if (size == 0) - { - val = NULL; - } - else if ((val = mmalloc (md, size)) == NULL) - { - nomem (size); - } - return (val); -} - -/* Like mrealloc but get error if no storage available. */ - -PTR -xmrealloc (md, ptr, size) - PTR md; - PTR ptr; - long size; -{ - register PTR val; - - if (ptr != NULL) - { - val = mrealloc (md, ptr, size); - } - else - { - val = mmalloc (md, size); - } - if (val == NULL) - { - nomem (size); - } - return (val); -} - -/* Like malloc but get error if no storage available, and protect against - the caller wanting to allocate zero bytes. */ - -PTR -xmalloc (size) - size_t size; -{ - return (xmmalloc ((PTR) NULL, size)); -} - -/* Like mrealloc but get error if no storage available. */ - -PTR -xrealloc (ptr, size) - PTR ptr; - size_t size; -{ - return (xmrealloc ((PTR) NULL, ptr, size)); -} - - -/* My replacement for the read system call. - Used like `read' but keeps going if `read' returns too soon. */ - -int -myread (desc, addr, len) - 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 (ptr, size) - const char *ptr; - int size; -{ - register char *p = (char *) xmalloc (size + 1); - memcpy (p, ptr, size); - p[size] = 0; - return p; -} - -char * -msavestring (md, ptr, size) - PTR md; - const char *ptr; - int size; -{ - register char *p = (char *) xmmalloc (md, size + 1); - memcpy (p, ptr, size); - p[size] = 0; - return p; -} - -/* The "const" is so it compiles under DGUX (which prototypes strsave - in <string.h>. FIXME: This should be named "xstrsave", shouldn't it? - Doesn't real strsave return NULL if out of memory? */ -char * -strsave (ptr) - const char *ptr; -{ - return savestring (ptr, strlen (ptr)); -} - -char * -mstrsave (md, ptr) - PTR md; - const char *ptr; -{ - return (msavestring (md, ptr, strlen (ptr))); -} - -void -print_spaces (n, file) - register int n; - register GDB_FILE *file; -{ - if (file->ts_streamtype == astring) - { - char *p; - - gdb_file_adjust_strbuf (n, file); - p = file->ts_strbuf + strlen (file->ts_strbuf); - - memset (p, ' ', n); - p[n] = '\000'; - } - else - { - while (n-- > 0) - fputc (' ', file->ts_filestream); - } -} - -/* Print a host address. */ - -void -gdb_print_address (addr, stream) - PTR addr; - GDB_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 -#ifdef ANSI_PROTOTYPES -query (char *ctlstr, ...) -#else -query (va_alist) - va_dcl -#endif -{ - va_list args; - register int answer; - register int ans2; - int retval; - -#ifdef ANSI_PROTOTYPES - va_start (args, ctlstr); -#else - char *ctlstr; - va_start (args); - ctlstr = va_arg (args, char *); -#endif - - 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; -#ifdef MPW - /* FIXME Automatically answer "yes" if called from MacGDB. */ - if (mac_app) - return 1; -#endif /* MPW */ - - 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"); - -#ifdef MPW - /* If not in MacGDB, move to a new line so the entered line doesn't - have a prompt on the front of it. */ - if (!mac_app) - fputs_unfiltered ("\n", gdb_stdout); -#endif /* MPW */ - - wrap_here(""); - gdb_flush (gdb_stdout); - -#if defined(TUI) - if (!tui_version || cmdWin == tuiWinWithFocus()) -#endif - answer = fgetc (stdin); -#if defined(TUI) - else - - answer = (unsigned char)tuiBufferGetc(); - -#endif - 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') || (tui_version && answer != '\r')) - do - { -#if defined(TUI) - if (!tui_version || cmdWin == tuiWinWithFocus()) -#endif - ans2 = fgetc (stdin); -#if defined(TUI) - else - - ans2 = (unsigned char)tuiBufferGetc(); -#endif - clearerr (stdin); - } - while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); - TUIDO(((TuiOpaqueFuncPtr)tui_vStartNewLines, 1)); - - 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 (string_ptr) - 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. */ - -void -gdb_printchar (c, stream, quoter) - register int c; - GDB_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': - fputs_filtered ("\\n", stream); - break; - case '\b': - fputs_filtered ("\\b", stream); - break; - case '\t': - fputs_filtered ("\\t", stream); - break; - case '\f': - fputs_filtered ("\\f", stream); - break; - case '\r': - fputs_filtered ("\\r", stream); - break; - case '\033': - fputs_filtered ("\\e", stream); - break; - case '\007': - fputs_filtered ("\\a", stream); - break; - default: - fprintf_filtered (stream, "\\%.3o", (unsigned int) c); - break; - } - } else { - if (c == '\\' || c == quoter) - fputs_filtered ("\\", stream); - fprintf_filtered (stream, "%c", c); - } -} - - - - -static char * hexlate = "0123456789abcdef" ; -int fmthex(inbuf,outbuff,length,linelength) - unsigned char * inbuf ; - unsigned char * outbuff; - int length; - int linelength; -{ - unsigned char byte , nib ; - int outlength = 0 ; - - while (length) - { - if (outlength >= linelength) break ; - byte = *inbuf ; - inbuf++ ; - nib = byte >> 4 ; - *outbuff++ = hexlate[nib] ; - nib = byte &0x0f ; - *outbuff++ = hexlate[nib] ; - *outbuff++ = ' ' ; - length-- ; - outlength += 3 ; - } - *outbuff = '\0' ; /* null terminate our output line */ - return outlength ; -} - - -/* Number of lines per page or UINT_MAX if paging is disabled. */ -static unsigned int lines_per_page; -/* Number of chars per line or UNIT_MAX is 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() -{ -#if defined(TUI) - if (tui_version && m_winPtrNotNull(cmdWin)) - { - lines_per_page = cmdWin->generic.height; - chars_per_line = cmdWin->generic.width; - } - else -#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 (MPW) && !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; - - val = tgetnum ("li"); - if (val >= 0) - 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 (!GDB_FILE_ISATTY (gdb_stdout)) - lines_per_page = UINT_MAX; - } /* the command_line_version */ - set_width(); -} - -static void -set_width() -{ - 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 (args, from_tty, c) - 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 () -{ - 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') - request_quit (SIGINT); - free (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 () -{ - 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(indent) - char *indent; -{ - /* This should have been allocated, but be paranoid anyway. */ - if (!wrap_buffer) - abort (); - - 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 () -{ - if (chars_printed > 0) - { - puts_filtered ("\n"); - } -} - -int -gdb_file_isatty (stream) - GDB_FILE *stream; -{ - - if (stream->ts_streamtype == afile) - return (isatty(fileno(stream->ts_filestream))); - else return 0; -} - -GDB_FILE * -gdb_file_init_astring (n) - int n; -{ - GDB_FILE *tmpstream; - - tmpstream = xmalloc (sizeof(GDB_FILE)); - tmpstream->ts_streamtype = astring; - tmpstream->ts_filestream = NULL; - if (n > 0) - { - tmpstream->ts_strbuf = xmalloc ((n + 1)*sizeof(char)); - tmpstream->ts_strbuf[0] = '\0'; - } - else - tmpstream->ts_strbuf = NULL; - tmpstream->ts_buflen = n; - - return tmpstream; -} - -void -gdb_file_deallocate (streamptr) - GDB_FILE **streamptr; -{ - GDB_FILE *tmpstream; - - tmpstream = *streamptr; - if ((tmpstream->ts_streamtype == astring) && - (tmpstream->ts_strbuf != NULL)) - { - free (tmpstream->ts_strbuf); - } - - free (tmpstream); - *streamptr = NULL; -} - -char * -gdb_file_get_strbuf (stream) - GDB_FILE *stream; -{ - return (stream->ts_strbuf); -} - -/* adjust the length of the buffer by the amount necessary - to accomodate appending a string of length N to the buffer contents */ -void -gdb_file_adjust_strbuf (n, stream) - int n; - GDB_FILE *stream; -{ - int non_null_chars; - - non_null_chars = strlen(stream->ts_strbuf); - - if (n > (stream->ts_buflen - non_null_chars - 1)) - { - stream->ts_buflen = n + non_null_chars + 1; - stream->ts_strbuf = xrealloc (stream->ts_strbuf, stream->ts_buflen); - } -} - -GDB_FILE * -gdb_fopen (name, mode) - char * name; - char * mode; -{ - int gdb_file_size; - GDB_FILE *tmp; - - gdb_file_size = sizeof(GDB_FILE); - tmp = (GDB_FILE *) xmalloc (gdb_file_size); - tmp->ts_streamtype = afile; - tmp->ts_filestream = fopen (name, mode); - tmp->ts_strbuf = NULL; - tmp->ts_buflen = 0; - - return tmp; -} - -void -gdb_flush (stream) - GDB_FILE *stream; -{ - if (flush_hook - && (stream == gdb_stdout - || stream == gdb_stderr)) - { - flush_hook (stream); - return; - } - - fflush (stream->ts_filestream); -} - -void -gdb_fclose(streamptr) - GDB_FILE **streamptr; -{ - GDB_FILE *tmpstream; - - tmpstream = *streamptr; - fclose (tmpstream->ts_filestream); - gdb_file_deallocate (streamptr); -} - -/* 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 (linebuffer, stream, filter) - const char *linebuffer; - GDB_FILE *stream; - int filter; -{ - const char *lineptr; - - if (linebuffer == 0) - return; - - /* Don't do any filtering if it is disabled. */ - if (stream != gdb_stdout - || (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 (linebuffer, stream) - const char *linebuffer; - GDB_FILE *stream; -{ - fputs_maybe_filtered (linebuffer, stream, 1); -} - -int -putchar_unfiltered (c) - int c; -{ - char buf[2]; - - buf[0] = c; - buf[1] = 0; - fputs_unfiltered (buf, gdb_stdout); - return c; -} - -int -fputc_unfiltered (c, stream) - int c; - GDB_FILE * stream; -{ - char buf[2]; - - buf[0] = c; - buf[1] = 0; - fputs_unfiltered (buf, stream); - return c; -} - -int -fputc_filtered (c, stream) - int c; - GDB_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 (prefix, string, suffix) - 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_stderr); - fputs_unfiltered ("\n", gdb_stderr); - fputs_unfiltered (prefix, gdb_stderr); - } - - /* Print prefix if we printed a newline during the previous call. */ - if (new_line) - { - new_line = 0; - fputs_unfiltered (prefix, gdb_stderr); - } - - 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_stderr); - - else - fprintf_unfiltered (gdb_stderr, "\\x%02x", ch & 0xff); - break; - - case '\\': fputs_unfiltered ("\\\\", gdb_stderr); break; - case '\b': fputs_unfiltered ("\\b", gdb_stderr); break; - case '\f': fputs_unfiltered ("\\f", gdb_stderr); break; - case '\n': new_line = 1; - fputs_unfiltered ("\\n", gdb_stderr); break; - case '\r': fputs_unfiltered ("\\r", gdb_stderr); break; - case '\t': fputs_unfiltered ("\\t", gdb_stderr); break; - case '\v': fputs_unfiltered ("\\v", gdb_stderr); break; - } - - return_p = ch == '\r'; - } - - /* Print suffix if we printed a newline. */ - if (new_line) - { - fputs_unfiltered (suffix, gdb_stderr); - fputs_unfiltered ("\n", gdb_stderr); - } -} - - -/* 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 (stream, format, args, filter) - GDB_FILE *stream; - const char *format; - va_list args; - int filter; -{ - char *linebuffer; - struct cleanup *old_cleanups; - - vasprintf (&linebuffer, format, args); - if (linebuffer == NULL) - { - fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr); - exit (1); - } - old_cleanups = make_cleanup (free, linebuffer); - fputs_maybe_filtered (linebuffer, stream, filter); - do_cleanups (old_cleanups); -} - - -void -vfprintf_filtered (stream, format, args) - GDB_FILE *stream; - const char *format; - va_list args; -{ - vfprintf_maybe_filtered (stream, format, args, 1); -} - -void -vfprintf_unfiltered (stream, format, args) - GDB_FILE *stream; - const char *format; - va_list args; -{ - char *linebuffer; - struct cleanup *old_cleanups; - - vasprintf (&linebuffer, format, args); - if (linebuffer == NULL) - { - fputs_unfiltered ("\ngdb: virtual memory exhausted.\n", gdb_stderr); - exit (1); - } - old_cleanups = make_cleanup (free, linebuffer); - fputs_unfiltered (linebuffer, stream); - do_cleanups (old_cleanups); -} - -void -vprintf_filtered (format, args) - const char *format; - va_list args; -{ - vfprintf_maybe_filtered (gdb_stdout, format, args, 1); -} - -void -vprintf_unfiltered (format, args) - const char *format; - va_list args; -{ - vfprintf_unfiltered (gdb_stdout, format, args); -} - -/* VARARGS */ -void -#ifdef ANSI_PROTOTYPES -fprintf_filtered (GDB_FILE *stream, const char *format, ...) -#else -fprintf_filtered (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, format); -#else - GDB_FILE *stream; - char *format; - - va_start (args); - stream = va_arg (args, GDB_FILE *); - format = va_arg (args, char *); -#endif - vfprintf_filtered (stream, format, args); - va_end (args); -} - -/* VARARGS */ -void -#ifdef ANSI_PROTOTYPES -fprintf_unfiltered (GDB_FILE *stream, const char *format, ...) -#else -fprintf_unfiltered (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, format); -#else - GDB_FILE *stream; - char *format; - - va_start (args); - stream = va_arg (args, GDB_FILE *); - format = va_arg (args, char *); -#endif - vfprintf_unfiltered (stream, format, args); - va_end (args); -} - -/* Like fprintf_filtered, but prints its result indented. - Called as fprintfi_filtered (spaces, stream, format, ...); */ - -/* VARARGS */ -void -#ifdef ANSI_PROTOTYPES -fprintfi_filtered (int spaces, GDB_FILE *stream, const char *format, ...) -#else -fprintfi_filtered (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, format); -#else - int spaces; - GDB_FILE *stream; - char *format; - - va_start (args); - spaces = va_arg (args, int); - stream = va_arg (args, GDB_FILE *); - format = va_arg (args, char *); -#endif - print_spaces_filtered (spaces, stream); - - vfprintf_filtered (stream, format, args); - va_end (args); -} - - -/* VARARGS */ -void -#ifdef ANSI_PROTOTYPES -printf_filtered (const char *format, ...) -#else -printf_filtered (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, format); -#else - char *format; - - va_start (args); - format = va_arg (args, char *); -#endif - vfprintf_filtered (gdb_stdout, format, args); - va_end (args); -} - - -/* VARARGS */ -void -#ifdef ANSI_PROTOTYPES -printf_unfiltered (const char *format, ...) -#else -printf_unfiltered (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, format); -#else - char *format; - - va_start (args); - format = va_arg (args, char *); -#endif - vfprintf_unfiltered (gdb_stdout, format, args); - va_end (args); -} - -/* Like printf_filtered, but prints it's result indented. - Called as printfi_filtered (spaces, format, ...); */ - -/* VARARGS */ -void -#ifdef ANSI_PROTOTYPES -printfi_filtered (int spaces, const char *format, ...) -#else -printfi_filtered (va_alist) - va_dcl -#endif -{ - va_list args; -#ifdef ANSI_PROTOTYPES - va_start (args, format); -#else - int spaces; - char *format; - - va_start (args); - spaces = va_arg (args, int); - format = va_arg (args, char *); -#endif - 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 (string) - const char *string; -{ - fputs_filtered (string, gdb_stdout); -} - -void -puts_unfiltered (string) - 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 (n) - int n; -{ - register char *t; - static char *spaces; - static int max_spaces; - - if (n > max_spaces) - { - if (spaces) - free (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 (n, stream) - int n; - GDB_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 (stream, name, lang, arg_mode) - GDB_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; - /* start-sanitize-java */ - case language_java: - demangled = cplus_demangle (name, arg_mode | DMGL_JAVA); - break; - /* end-sanitize-java */ - case language_chill: - demangled = chill_demangle (name); - break; - default: - demangled = NULL; - break; - } - fputs_filtered (demangled ? demangled : name, stream); - if (demangled != NULL) - { - free (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 (string1, string2) - 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'); -} - - -/* -** subsetCompare() -** Answer whether stringToCompare is a full or partial match to -** templateString. The partial match must be in sequence starting -** at index 0. -*/ -int -#ifdef _STDC__ -subsetCompare( - char *stringToCompare, - char *templateString) -#else -subsetCompare(stringToCompare, templateString) - char *stringToCompare; - char *templateString; -#endif -{ - int match = 0; - - if (templateString != (char *)NULL && stringToCompare != (char *)NULL && - strlen(stringToCompare) <= strlen(templateString)) - match = (strncmp(templateString, - stringToCompare, - strlen(stringToCompare)) == 0); - - return match; -} /* subsetCompare */ - - -void pagination_on_command(arg, from_tty) - char *arg; - int from_tty; -{ - pagination_enabled = 1; -} - -void pagination_off_command(arg, from_tty) - char *arg; - int from_tty; -{ - pagination_enabled = 0; -} - - -void -initialize_utils () -{ - 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); - c->function.sfunc = 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 (!GDB_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 - -/* Support for converting target fp numbers into host DOUBLEST format. */ - -/* XXX - This code should really be in libiberty/floatformat.c, however - configuration issues with libiberty made this very difficult to do in the - available time. */ - -#include "floatformat.h" -#include <math.h> /* ldexp */ - -/* The odds that CHAR_BIT will be anything but 8 are low enough that I'm not - going to bother with trying to muck around with whether it is defined in - a system header, what we do if not, etc. */ -#define FLOATFORMAT_CHAR_BIT 8 - -static unsigned long get_field PARAMS ((unsigned char *, - enum floatformat_byteorders, - unsigned int, - unsigned int, - unsigned int)); - -/* Extract a field which starts at START and is LEN bytes long. DATA and - TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */ -static unsigned long -get_field (data, order, total_len, start, len) - unsigned char *data; - enum floatformat_byteorders order; - unsigned int total_len; - unsigned int start; - unsigned int len; -{ - unsigned long result; - unsigned int cur_byte; - int cur_bitshift; - - /* Start at the least significant part of the field. */ - cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT; - if (order == floatformat_little || order == floatformat_littlebyte_bigword) - cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1; - cur_bitshift = - ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT; - result = *(data + cur_byte) >> (-cur_bitshift); - cur_bitshift += FLOATFORMAT_CHAR_BIT; - if (order == floatformat_little || order == floatformat_littlebyte_bigword) - ++cur_byte; - else - --cur_byte; - - /* Move towards the most significant part of the field. */ - while (cur_bitshift < len) - { - if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT) - /* This is the last byte; zero out the bits which are not part of - this field. */ - result |= - (*(data + cur_byte) & ((1 << (len - cur_bitshift)) - 1)) - << cur_bitshift; - else - result |= *(data + cur_byte) << cur_bitshift; - cur_bitshift += FLOATFORMAT_CHAR_BIT; - if (order == floatformat_little || order == floatformat_littlebyte_bigword) - ++cur_byte; - else - --cur_byte; - } - return result; -} - -/* Convert from FMT to a DOUBLEST. - FROM is the address of the extended float. - Store the DOUBLEST in *TO. */ - -void -floatformat_to_doublest (fmt, from, to) - const struct floatformat *fmt; - char *from; - DOUBLEST *to; -{ - unsigned char *ufrom = (unsigned char *)from; - DOUBLEST dto; - long exponent; - unsigned long mant; - unsigned int mant_bits, mant_off; - int mant_bits_left; - int special_exponent; /* It's a NaN, denorm or zero */ - - /* If the mantissa bits are not contiguous from one end of the - mantissa to the other, we need to make a private copy of the - source bytes that is in the right order since the unpacking - algorithm assumes that the bits are contiguous. - - Swap the bytes individually rather than accessing them through - "long *" since we have no guarantee that they start on a long - alignment, and also sizeof(long) for the host could be different - than sizeof(long) for the target. FIXME: Assumes sizeof(long) - for the target is 4. */ - - if (fmt -> byteorder == floatformat_littlebyte_bigword) - { - static unsigned char *newfrom; - unsigned char *swapin, *swapout; - int longswaps; - - longswaps = fmt -> totalsize / FLOATFORMAT_CHAR_BIT; - longswaps >>= 3; - - if (newfrom == NULL) - { - newfrom = (unsigned char *) xmalloc (fmt -> totalsize); - } - swapout = newfrom; - swapin = ufrom; - ufrom = newfrom; - while (longswaps-- > 0) - { - /* This is ugly, but efficient */ - *swapout++ = swapin[4]; - *swapout++ = swapin[5]; - *swapout++ = swapin[6]; - *swapout++ = swapin[7]; - *swapout++ = swapin[0]; - *swapout++ = swapin[1]; - *swapout++ = swapin[2]; - *swapout++ = swapin[3]; - swapin += 8; - } - } - - exponent = get_field (ufrom, fmt->byteorder, fmt->totalsize, - fmt->exp_start, fmt->exp_len); - /* Note that if exponent indicates a NaN, we can't really do anything useful - (not knowing if the host has NaN's, or how to build one). So it will - end up as an infinity or something close; that is OK. */ - - mant_bits_left = fmt->man_len; - mant_off = fmt->man_start; - dto = 0.0; - - special_exponent = exponent == 0 || exponent == fmt->exp_nan; - -/* Don't bias zero's, denorms or NaNs. */ - if (!special_exponent) - exponent -= fmt->exp_bias; - - /* Build the result algebraically. Might go infinite, underflow, etc; - who cares. */ - -/* If this format uses a hidden bit, explicitly add it in now. Otherwise, - increment the exponent by one to account for the integer bit. */ - - if (!special_exponent) - if (fmt->intbit == floatformat_intbit_no) - dto = ldexp (1.0, exponent); - else - exponent++; - - while (mant_bits_left > 0) - { - mant_bits = min (mant_bits_left, 32); - - mant = get_field (ufrom, fmt->byteorder, fmt->totalsize, - mant_off, mant_bits); - - dto += ldexp ((double)mant, exponent - mant_bits); - exponent -= mant_bits; - mant_off += mant_bits; - mant_bits_left -= mant_bits; - } - - /* Negate it if negative. */ - if (get_field (ufrom, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1)) - dto = -dto; - *to = dto; -} - -static void put_field PARAMS ((unsigned char *, enum floatformat_byteorders, - unsigned int, - unsigned int, - unsigned int, - unsigned long)); - -/* Set a field which starts at START and is LEN bytes long. DATA and - TOTAL_LEN are the thing we are extracting it from, in byteorder ORDER. */ -static void -put_field (data, order, total_len, start, len, stuff_to_put) - unsigned char *data; - enum floatformat_byteorders order; - unsigned int total_len; - unsigned int start; - unsigned int len; - unsigned long stuff_to_put; -{ - unsigned int cur_byte; - int cur_bitshift; - - /* Start at the least significant part of the field. */ - cur_byte = (start + len) / FLOATFORMAT_CHAR_BIT; - if (order == floatformat_little || order == floatformat_littlebyte_bigword) - cur_byte = (total_len / FLOATFORMAT_CHAR_BIT) - cur_byte - 1; - cur_bitshift = - ((start + len) % FLOATFORMAT_CHAR_BIT) - FLOATFORMAT_CHAR_BIT; - *(data + cur_byte) &= - ~(((1 << ((start + len) % FLOATFORMAT_CHAR_BIT)) - 1) << (-cur_bitshift)); - *(data + cur_byte) |= - (stuff_to_put & ((1 << FLOATFORMAT_CHAR_BIT) - 1)) << (-cur_bitshift); - cur_bitshift += FLOATFORMAT_CHAR_BIT; - if (order == floatformat_little || order == floatformat_littlebyte_bigword) - ++cur_byte; - else - --cur_byte; - - /* Move towards the most significant part of the field. */ - while (cur_bitshift < len) - { - if (len - cur_bitshift < FLOATFORMAT_CHAR_BIT) - { - /* This is the last byte. */ - *(data + cur_byte) &= - ~((1 << (len - cur_bitshift)) - 1); - *(data + cur_byte) |= (stuff_to_put >> cur_bitshift); - } - else - *(data + cur_byte) = ((stuff_to_put >> cur_bitshift) - & ((1 << FLOATFORMAT_CHAR_BIT) - 1)); - cur_bitshift += FLOATFORMAT_CHAR_BIT; - if (order == floatformat_little || order == floatformat_littlebyte_bigword) - ++cur_byte; - else - --cur_byte; - } -} - -#ifdef HAVE_LONG_DOUBLE -/* Return the fractional part of VALUE, and put the exponent of VALUE in *EPTR. - The range of the returned value is >= 0.5 and < 1.0. This is equivalent to - frexp, but operates on the long double data type. */ - -static long double ldfrexp PARAMS ((long double value, int *eptr)); - -static long double -ldfrexp (value, eptr) - long double value; - int *eptr; -{ - long double tmp; - int exp; - - /* Unfortunately, there are no portable functions for extracting the exponent - of a long double, so we have to do it iteratively by multiplying or dividing - by two until the fraction is between 0.5 and 1.0. */ - - if (value < 0.0l) - value = -value; - - tmp = 1.0l; - exp = 0; - - if (value >= tmp) /* Value >= 1.0 */ - while (value >= tmp) - { - tmp *= 2.0l; - exp++; - } - else if (value != 0.0l) /* Value < 1.0 and > 0.0 */ - { - while (value < tmp) - { - tmp /= 2.0l; - exp--; - } - tmp *= 2.0l; - exp++; - } - - *eptr = exp; - return value/tmp; -} -#endif /* HAVE_LONG_DOUBLE */ - - -/* The converse: convert the DOUBLEST *FROM to an extended float - and store where TO points. Neither FROM nor TO have any alignment - restrictions. */ - -void -floatformat_from_doublest (fmt, from, to) - CONST struct floatformat *fmt; - DOUBLEST *from; - char *to; -{ - DOUBLEST dfrom; - int exponent; - DOUBLEST mant; - unsigned int mant_bits, mant_off; - int mant_bits_left; - unsigned char *uto = (unsigned char *)to; - - memcpy (&dfrom, from, sizeof (dfrom)); - memset (uto, 0, fmt->totalsize / FLOATFORMAT_CHAR_BIT); - if (dfrom == 0) - return; /* Result is zero */ - if (dfrom != dfrom) /* Result is NaN */ - { - /* From is NaN */ - put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, - fmt->exp_len, fmt->exp_nan); - /* Be sure it's not infinity, but NaN value is irrel */ - put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start, - 32, 1); - return; - } - - /* If negative, set the sign bit. */ - if (dfrom < 0) - { - put_field (uto, fmt->byteorder, fmt->totalsize, fmt->sign_start, 1, 1); - dfrom = -dfrom; - } - - if (dfrom + dfrom == dfrom && dfrom != 0.0) /* Result is Infinity */ - { - /* Infinity exponent is same as NaN's. */ - put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, - fmt->exp_len, fmt->exp_nan); - /* Infinity mantissa is all zeroes. */ - put_field (uto, fmt->byteorder, fmt->totalsize, fmt->man_start, - fmt->man_len, 0); - return; - } - -#ifdef HAVE_LONG_DOUBLE - mant = ldfrexp (dfrom, &exponent); -#else - mant = frexp (dfrom, &exponent); -#endif - - put_field (uto, fmt->byteorder, fmt->totalsize, fmt->exp_start, fmt->exp_len, - exponent + fmt->exp_bias - 1); - - mant_bits_left = fmt->man_len; - mant_off = fmt->man_start; - while (mant_bits_left > 0) - { - unsigned long mant_long; - mant_bits = mant_bits_left < 32 ? mant_bits_left : 32; - - mant *= 4294967296.0; - mant_long = (unsigned long)mant; - mant -= mant_long; - - /* If the integer bit is implicit, then we need to discard it. - If we are discarding a zero, we should be (but are not) creating - a denormalized number which means adjusting the exponent - (I think). */ - if (mant_bits_left == fmt->man_len - && fmt->intbit == floatformat_intbit_no) - { - mant_long <<= 1; - mant_bits -= 1; - } - - if (mant_bits < 32) - { - /* The bits we want are in the most significant MANT_BITS bits of - mant_long. Move them to the least significant. */ - mant_long >>= 32 - mant_bits; - } - - put_field (uto, fmt->byteorder, fmt->totalsize, - mant_off, mant_bits, mant_long); - mant_off += mant_bits; - mant_bits_left -= mant_bits; - } - if (fmt -> byteorder == floatformat_littlebyte_bigword) - { - int count; - unsigned char *swaplow = uto; - unsigned char *swaphigh = uto + 4; - unsigned char tmp; - - for (count = 0; count < 4; count++) - { - tmp = *swaplow; - *swaplow++ = *swaphigh; - *swaphigh++ = tmp; - } - } -} - -/* temporary storage using circular buffer */ -#define NUMCELLS 16 -#define CELLSIZE 32 -static char* -get_cell() -{ - static char buf[NUMCELLS][CELLSIZE]; - static int cell=0; - if (++cell>=NUMCELLS) cell=0; - return buf[cell]; -} - -/* print routines to handle variable size regs, etc. - - FIXME: Note that t_addr is a bfd_vma, which is currently either an - unsigned long or unsigned long long, determined at configure time. - If t_addr is an unsigned long long and sizeof (unsigned long long) - is greater than sizeof (unsigned long), then I believe this code will - probably lose, at least for little endian machines. I believe that - it would also be better to eliminate the switch on the absolute size - of t_addr and replace it with a sequence of if statements that compare - sizeof t_addr with sizeof the various types and do the right thing, - which includes knowing whether or not the host supports long long. - -fnf - - */ - -static int thirty_two = 32; /* eliminate warning from compiler on 32-bit systems */ - -char* -paddr(addr) - t_addr addr; -{ - char *paddr_str=get_cell(); - switch (sizeof(t_addr)) - { - case 8: - sprintf (paddr_str, "%08lx%08lx", - (unsigned long) (addr >> thirty_two), (unsigned long) (addr & 0xffffffff)); - break; - case 4: - sprintf (paddr_str, "%08lx", (unsigned long) addr); - break; - case 2: - sprintf (paddr_str, "%04x", (unsigned short) (addr & 0xffff)); - break; - default: - sprintf (paddr_str, "%lx", (unsigned long) addr); - } - return paddr_str; -} - -char* -preg(reg) - t_reg reg; -{ - char *preg_str=get_cell(); - switch (sizeof(t_reg)) - { - case 8: - sprintf (preg_str, "%08lx%08lx", - (unsigned long) (reg >> thirty_two), (unsigned long) (reg & 0xffffffff)); - break; - case 4: - sprintf (preg_str, "%08lx", (unsigned long) reg); - break; - case 2: - sprintf (preg_str, "%04x", (unsigned short) (reg & 0xffff)); - break; - default: - sprintf (preg_str, "%lx", (unsigned long) reg); - } - return preg_str; -} - -char* -paddr_nz(addr) - t_addr addr; -{ - char *paddr_str=get_cell(); - switch (sizeof(t_addr)) - { - case 8: - { - unsigned long high = (unsigned long) (addr >> thirty_two); - if (high == 0) - sprintf (paddr_str, "%lx", (unsigned long) (addr & 0xffffffff)); - else - sprintf (paddr_str, "%lx%08lx", - high, (unsigned long) (addr & 0xffffffff)); - break; - } - case 4: - sprintf (paddr_str, "%lx", (unsigned long) addr); - break; - case 2: - sprintf (paddr_str, "%x", (unsigned short) (addr & 0xffff)); - break; - default: - sprintf (paddr_str,"%lx", (unsigned long) addr); - } - return paddr_str; -} - -char* -preg_nz(reg) - t_reg reg; -{ - char *preg_str=get_cell(); - switch (sizeof(t_reg)) - { - case 8: - { - unsigned long high = (unsigned long) (reg >> thirty_two); - if (high == 0) - sprintf (preg_str, "%lx", (unsigned long) (reg & 0xffffffff)); - else - sprintf (preg_str, "%lx%08lx", - high, (unsigned long) (reg & 0xffffffff)); - break; - } - case 4: - sprintf (preg_str, "%lx", (unsigned long) reg); - break; - case 2: - sprintf (preg_str, "%x", (unsigned short) (reg & 0xffff)); - break; - default: - sprintf (preg_str, "%lx", (unsigned long) reg); - } - return preg_str; -} |