X-Git-Url: https://repo.jachan.dev/binutils.git/blobdiff_plain/ed317bb309d40570cbb047d431a4e93659257934..54f74247cb70b5d506de0143d464e1cded1b8085:/gdb/utils.c diff --git a/gdb/utils.c b/gdb/utils.c index 36645ebd1e..abb7d11ded 100644 --- a/gdb/utils.c +++ b/gdb/utils.c @@ -1,5 +1,5 @@ /* General utility routines for GDB, the GNU debugger. - Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc. + Copyright 1986, 89, 90, 91, 92, 95, 1996 Free Software Foundation, Inc. This file is part of GDB. @@ -15,82 +15,83 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include -#include -#include -#include +#include "defs.h" +#ifdef ANSI_PROTOTYPES +#include +#else #include +#endif #include -#include +#include "gdb_string.h" +#ifdef HAVE_UNISTD_H +#include +#endif -#include "defs.h" -#include "param.h" #include "signals.h" #include "gdbcmd.h" -#include "terminal.h" +#include "serial.h" #include "bfd.h" #include "target.h" +#include "demangle.h" +#include "expression.h" +#include "language.h" +#include "annotate.h" -extern volatile void return_to_top_level (); -extern volatile void exit (); -extern char *gdb_readline (); -extern char *getenv(); -extern char *malloc(); -extern char *realloc(); +#include "readline.h" -/* 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 +/* readline defines this. */ +#undef savestring -#ifdef MISSING_VPRINTF -#ifdef __GNU_LIBRARY -#undef MISSING_VPRINTF -#else /* !__GNU_LIBRARY */ +/* Prototypes for local functions */ -#ifndef vfprintf -/* Can't #define it since language.c needs it (though FIXME it shouldn't) */ -void -vfprintf (file, format, ap) - FILE *file; - char *format; - va_list ap; -{ - _doprnt (format, ap, file); -} -#endif /* vfprintf */ +static void vfprintf_maybe_filtered PARAMS ((FILE *, const char *, va_list, int)); -#ifndef vprintf -/* Can't #define it since printcmd.c needs it */ -void -vprintf (format, ap) - char *format; - va_list ap; -{ - vfprintf (stdout, format, ap); -} -#endif /* vprintf */ +static void fputs_maybe_filtered PARAMS ((const char *, FILE *, int)); -#endif /* GNU_LIBRARY */ -#endif /* MISSING_VPRINTF */ +#if !defined (NO_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 *)); -void error (); -void fatal (); +/* 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 /* Chain of cleanup actions established with make_cleanup, to be executed if an error happens. */ static struct cleanup *cleanup_chain; +/* 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. */ +/* 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; @@ -114,7 +115,14 @@ int sevenbit_strings = 0; /* String to be printed before error messages, if any. */ char *error_pre_print; -char *warning_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: "; /* Add a new cleanup to the cleanup_chain, and return the previous chain pointer @@ -123,8 +131,8 @@ char *warning_pre_print; struct cleanup * make_cleanup (function, arg) - void (*function) (); - int arg; + void (*function) PARAMS ((PTR)); + PTR arg; { register struct cleanup *new = (struct cleanup *) xmalloc (sizeof (struct cleanup)); @@ -165,7 +173,7 @@ discard_cleanups (old_chain) while ((ptr = cleanup_chain) != old_chain) { cleanup_chain = ptr->next; - free (ptr); + free ((PTR)ptr); } } @@ -201,177 +209,238 @@ free_current_contents (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; +{ +} + -/* Provide a hook for modules wishing to print their own warning messages - to set up the terminal state in a compatible way, without them having - to import all the target_<...> macros. */ +/* 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_setup () +warning_begin () { target_terminal_ours (); wrap_here(""); /* Force out any buffered output */ - fflush (stdout); + 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. */ + does not force the return to command level. */ /* VARARGS */ void +#ifdef ANSI_PROTOTYPES +warning (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); - target_terminal_ours (); - wrap_here(""); /* Force out any buffered output */ - fflush (stdout); - if (warning_pre_print) - fprintf (stderr, warning_pre_print); string = va_arg (args, char *); - vfprintf (stderr, string, args); - fprintf (stderr, "\n"); +#endif + 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 () +{ + 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 */ +#ifdef ANSI_PROTOTYPES +NORETURN void +error (char *string, ...) +#else void error (va_alist) va_dcl +#endif { va_list args; - char *string; - +#ifdef ANSI_PROTOTYPES + va_start (args, string); +#else va_start (args); - target_terminal_ours (); - wrap_here(""); /* Force out any buffered output */ - fflush (stdout); - if (error_pre_print) - fprintf (stderr, error_pre_print); - string = va_arg (args, char *); - vfprintf (stderr, string, args); - fprintf (stderr, "\n"); - va_end (args); - return_to_top_level (); +#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. */ + 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 */ -void +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 *); - fprintf (stderr, "gdb: "); - vfprintf (stderr, string, args); - fprintf (stderr, "\n"); +#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 */ -void +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 (stderr, "gdb internal error: "); - vfprintf (stderr, string, args); - fprintf (stderr, "\n"); + fprintf_unfiltered (gdb_stderr, "\ngdb internal error: "); + vfprintf_unfiltered (gdb_stderr, string, args); + fprintf_unfiltered (gdb_stderr, "\n"); va_end (args); +#ifndef _WIN32 signal (SIGQUIT, SIG_DFL); kill (getpid (), SIGQUIT); +#endif /* We should never get here, but just in case... */ exit (1); } - -/* Memory management stuff (malloc friends). */ - -#if defined (NO_MALLOC_CHECK) -void -init_malloc () -{} -#else /* Have mcheck(). */ -static void -malloc_botch () -{ - fatal_dump_core ("Memory corruption"); -} -void -init_malloc () -{ - mcheck (malloc_botch); - mtrace (); -} -#endif /* Have mcheck(). */ - -/* Like malloc but get error if no storage available. */ +/* The strerror() function can return NULL for errno values that are + out of range. Provide a "safe" version that always returns a + printable string. */ -#ifdef __STDC__ -void * -#else char * -#endif -xmalloc (size) - long size; +safe_strerror (errnum) + int errnum; { - register char *val; + char *msg; + static char buf[32]; - /* At least one place (dbxread.c:condense_misc_bunches where misc_count == 0) - GDB wants to allocate zero bytes. */ - if (size == 0) - return NULL; - - val = (char *) malloc (size); - if (!val) - fatal ("virtual memory exhausted.", 0); - return val; + if ((msg = strerror (errnum)) == NULL) + { + sprintf (buf, "(undocumented errno %d)", errnum); + msg = buf; + } + return (msg); } -/* Like realloc but get error if no storage available. */ +/* The strsignal() function can return NULL for signal values that are + out of range. Provide a "safe" version that always returns a + printable string. */ -#ifdef __STDC__ -void * -#else char * -#endif -xrealloc (ptr, size) - char *ptr; - long size; +safe_strsignal (signo) + int signo; { - register char *val = (char *) realloc (ptr, size); - if (!val) - fatal ("virtual memory exhausted.", 0); - return val; + 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. */ @@ -380,16 +449,10 @@ void perror_with_name (string) char *string; { - extern int sys_nerr; - extern char *sys_errlist[]; char *err; char *combined; - if (errno < sys_nerr) - err = sys_errlist[errno]; - else - err = "unknown error"; - + err = safe_strerror (errno); combined = (char *) alloca (strlen (err) + strlen (string) + 3); strcpy (combined, string); strcat (combined, ": "); @@ -398,7 +461,7 @@ perror_with_name (string) /* 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_error = no_error; + bfd_set_error (bfd_error_no_error); errno = 0; error ("%s.", combined); @@ -412,22 +475,19 @@ print_sys_errmsg (string, errcode) char *string; int errcode; { - extern int sys_nerr; - extern char *sys_errlist[]; char *err; char *combined; - if (errcode < sys_nerr) - err = sys_errlist[errcode]; - else - err = "unknown error"; - + err = safe_strerror (errcode); combined = (char *) alloca (strlen (err) + strlen (string) + 3); strcpy (combined, string); strcat (combined, ": "); strcat (combined, err); - printf ("%s.\n", combined); + /* 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. */ @@ -435,138 +495,480 @@ print_sys_errmsg (string, errcode) void quit () { + serial_t gdb_stdout_serial = serial_fdopen (1); + target_terminal_ours (); - wrap_here ((char *)0); /* Force out any pending output */ -#ifdef HAVE_TERMIO - ioctl (fileno (stdout), TCFLSH, 1); -#else /* not HAVE_TERMIO */ - ioctl (fileno (stdout), TIOCFLUSH, 0); -#endif /* not HAVE_TERMIO */ -#ifdef TIOCGPGRP - error ("Quit"); -#else - error ("Quit (expect signal %d when inferior is resumed)", SIGINT); -#endif /* TIOCGPGRP */ + + /* 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_FLUSH_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); } -/* Control C comes here */ + +#if defined(__GO32__) || defined(_WIN32) + +/* In the absence of signals, poll keyboard for a quit. + Called from #define QUIT pollquit() in xm-go32.h. */ void -request_quit () +pollquit() { - quit_flag = 1; - -#ifdef USG - /* Restore the signal handler. */ - signal (SIGINT, request_quit); + if (kbhit ()) + { +#ifndef _WIN32 + int k = getkey (); + if (k == 1) { + quit_flag = 1; + quit(); + } + else if (k == 2) { + immediate_quit = 1; + quit (); + } + else + { + /* We just ignore it */ + fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n"); + } +#else + abort (); #endif - - if (immediate_quit) - quit (); + } } - -/* 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) +#endif +#if defined(__GO32__) || defined(_WIN32) +void notice_quit() +{ + if (kbhit ()) { - val = read (desc, addr, len); - if (val < 0) - return val; - if (val == 0) - return orglen - len; - len -= val; - addr += val; +#ifndef _WIN32 + int k = getkey (); + if (k == 1) { + quit_flag = 1; + } + else if (k == 2) + { + immediate_quit = 1; + } + else + { + fprintf_unfiltered (gdb_stderr, "CTRL-A to quit, CTRL-B to quit harder\n"); + } +#else + abort (); +#endif } - return orglen; } +#else +void notice_quit() +{ + /* Done by signals */ +} +#endif +/* 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); + +/* start-sanitize-gm */ +#ifdef GENERAL_MAGIC + target_kill (); +#endif /* GENERAL_MAGIC */ +/* end-sanitize-gm */ + +#ifdef REQUEST_QUIT + REQUEST_QUIT; +#else + if (immediate_quit) + quit (); +#endif +} + -/* 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. */ +/* Memory management stuff (malloc friends). */ -char * -savestring (ptr, size) - char *ptr; - int size; +/* 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 (NO_MMALLOC) + +PTR +mmalloc (md, size) + PTR md; + size_t size; { - register char *p = (char *) xmalloc (size + 1); - bcopy (ptr, p, size); - p[size] = 0; - return p; + return malloc (size); } -/* The "const" is so it compiles under DGUX (which prototypes strsave - in . 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; +PTR +mrealloc (md, ptr, size) + PTR md; + PTR ptr; + size_t size; { - return savestring (ptr, strlen (ptr)); + if (ptr == 0) /* Guard against old realloc's */ + return malloc (size); + else + return realloc (ptr, size); } -char * -concat (s1, s2, s3) - char *s1, *s2, *s3; +void +mfree (md, ptr) + PTR md; + PTR ptr; { - register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; - register char *val = (char *) xmalloc (len); - strcpy (val, s1); - strcat (val, s2); - strcat (val, s3); - return val; + free (ptr); } +#endif /* NO_MMALLOC */ + +#if defined (NO_MMALLOC) || defined (NO_MMCHECK) + void -print_spaces (n, file) - register int n; - register FILE *file; +init_malloc (md) + PTR md; { - while (n-- > 0) - fputc (' ', file); } -/* 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. */ +#else /* Have mmalloc and want corruption checking */ -/* VARARGS */ -int -query (va_alist) - va_dcl +static void +malloc_botch () { - va_list args; - char *ctlstr; - register int answer; - register int ans2; + fatal_dump_core ("Memory corruption"); +} - /* Automatically answer "yes" if input is not from a terminal. */ - if (!input_from_terminal_p ()) - return 1; +/* 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. - while (1) + 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)) { - va_start (args); - ctlstr = va_arg (args, char *); - vfprintf (stdout, ctlstr, args); - va_end (args); - printf ("(y or n) "); - fflush (stdout); - answer = fgetc (stdin); - clearerr (stdin); /* in case of C-d */ + /* 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 . 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 FILE *file; +{ + while (n-- > 0) + fputc (' ', file); +} + +/* 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 */ + + gdb_flush (gdb_stdout); + answer = fgetc (stdin); + clearerr (stdin); /* in case of C-d */ if (answer == EOF) /* C-d */ - return 1; + { + retval = 1; + break; + } if (answer != '\n') /* Eat rest of input line, to EOF or newline */ do { @@ -577,12 +979,23 @@ query (va_alist) if (answer >= 'a') answer -= 040; if (answer == 'Y') - return 1; + { + retval = 1; + break; + } if (answer == 'N') - return 0; - printf ("Please answer y or n.\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 @@ -666,18 +1079,23 @@ parse_escape (string_ptr) } } -/* Print the character CH on STREAM as part of the contents - of a literal string whose delimiter is QUOTER. */ +/* 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 -printchar (ch, stream, quoter) - unsigned char ch; +gdb_printchar (c, stream, quoter) + register int c; FILE *stream; int quoter; { - register int c = ch; - if (c < 040 || (sevenbit_strings && c >= 0177)) { + 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': @@ -725,17 +1143,22 @@ static unsigned int lines_printed, chars_printed; 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. + 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; - wrap_column is the column number on the screen where wrap_buffer begins. - When wrap_column is zero, wrapping is not in effect. - wrap_buffer is malloc'd with chars_per_line+2 bytes. - When wrap_buffer[0] is null, the buffer is empty. - wrap_pointer points into it at the next character to fill. - wrap_indent is the string that should be used as indentation if the - wrap occurs. */ +/* Pointer in wrap_buffer to the next character to fill. */ +static char *wrap_pointer; -static char *wrap_buffer, *wrap_pointer, *wrap_indent; +/* 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; /* ARGSUSED */ @@ -755,17 +1178,59 @@ set_width_command (args, from_tty, c) wrap_pointer = wrap_buffer; /* Start it at the beginning */ } +/* 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 to continue, or q 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++; - ignore = gdb_readline ("---Type to continue---"); + /* 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) - free (ignore); - chars_printed = lines_printed = 0; + { + 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 --- line at the top of the screen. */ + reinitialize_more_filter (); + dont_repeat (); /* Forget prev cmd -- CR won't repeat it. */ } @@ -780,7 +1245,7 @@ reinitialize_more_filter () /* 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 nonzero, it is a string to be printed to indent the + 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(). @@ -792,17 +1257,25 @@ reinitialize_more_filter () 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. */ + 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; + char *indent; { + /* This should have been allocated, but be paranoid anyway. */ + if (!wrap_buffer) + abort (); + if (wrap_buffer[0]) { *wrap_pointer = '\0'; - fputs (wrap_buffer, stdout); + fputs_unfiltered (wrap_buffer, gdb_stdout); } wrap_pointer = wrap_buffer; wrap_buffer[0] = '\0'; @@ -813,41 +1286,85 @@ wrap_here(indent) else if (chars_printed >= chars_per_line) { puts_filtered ("\n"); - puts_filtered (indent); + if (indent != NULL) + puts_filtered (indent); wrap_column = 0; } else { wrap_column = chars_printed; - wrap_indent = indent; + 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"); } } -/* Like fputs but pause after every screenful, and can wrap at points - other than the final character of a line. - Unlike fputs, fputs_filtered does not return a value. + +GDB_FILE * +gdb_fopen (name, mode) + char * name; + char * mode; +{ + return fopen (name, mode); +} + +void +gdb_flush (stream) + FILE *stream; +{ + if (flush_hook) + { + flush_hook (stream); + return; + } + + fflush (stream); +} + +/* 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 - (since prompt_for_continue may do so) so this routine should not be - called when cleanups are not in place. */ + 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. */ -void -fputs_filtered (linebuffer, stream) - char *linebuffer; +static void +fputs_maybe_filtered (linebuffer, stream, filter) + const char *linebuffer; FILE *stream; + int filter; { - char *lineptr; + const char *lineptr; if (linebuffer == 0) return; - + /* Don't do any filtering if it is disabled. */ - if (stream != stdout + if (stream != gdb_stdout || (lines_per_page == UINT_MAX && chars_per_line == UINT_MAX)) { - fputs (linebuffer, stream); + fputs_unfiltered (linebuffer, stream); return; } @@ -859,7 +1376,8 @@ fputs_filtered (linebuffer, stream) while (*lineptr) { /* Possible new page. */ - if (lines_printed >= lines_per_page - 1) + if (filter && + (lines_printed >= lines_per_page - 1)) prompt_for_continue (); while (*lineptr && *lineptr != '\n') @@ -870,7 +1388,7 @@ fputs_filtered (linebuffer, stream) if (wrap_column) *wrap_pointer++ = '\t'; else - putc ('\t', stream); + 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. */ @@ -882,7 +1400,7 @@ fputs_filtered (linebuffer, stream) if (wrap_column) *wrap_pointer++ = *lineptr; else - putc (*lineptr, stream); + fputc_unfiltered (*lineptr, stream); chars_printed++; lineptr++; } @@ -897,7 +1415,7 @@ fputs_filtered (linebuffer, stream) if chars_per_line is right, we probably just overflowed anyway; if it's wrong, let us keep going. */ if (wrap_column) - putc ('\n', stream); + fputc_unfiltered ('\n', stream); /* Possible new page. */ if (lines_printed >= lines_per_page - 1) @@ -906,10 +1424,9 @@ fputs_filtered (linebuffer, stream) /* Now output indentation and wrapped string */ if (wrap_column) { - if (wrap_indent) - fputs (wrap_indent, stream); - *wrap_pointer = '\0'; /* Null-terminate saved stuff */ - fputs (wrap_buffer, stream); /* and eject it */ + 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 @@ -930,205 +1447,297 @@ fputs_filtered (linebuffer, stream) chars_printed = 0; wrap_here ((char *)0); /* Spit out chars, cancel further wraps */ lines_printed++; - putc ('\n', stream); + fputc_unfiltered ('\n', stream); lineptr++; } } } - -/* fputs_demangled is a variant of fputs_filtered that - demangles g++ names.*/ - void -fputs_demangled (linebuffer, stream, arg_mode) - char *linebuffer; +fputs_filtered (linebuffer, stream) + const char *linebuffer; FILE *stream; - int arg_mode; { -#ifdef __STDC__ - extern char *cplus_demangle (const char *, int); -#else - extern char *cplus_demangle (); -#endif -#define SYMBOL_MAX 1024 - -#define SYMBOL_CHAR(c) (isascii(c) \ - && (isalnum(c) || (c) == '_' || (c) == CPLUS_MARKER)) - - char buf[SYMBOL_MAX+1]; -# define SLOP 5 /* How much room to leave in buf */ - char *p; - - if (linebuffer == NULL) - return; - - /* If user wants to see raw output, no problem. */ - if (!demangle) { - fputs_filtered (linebuffer, stream); - return; - } + fputs_maybe_filtered (linebuffer, stream, 1); +} - p = linebuffer; +int +putchar_unfiltered (c) + int c; +{ + char buf[2]; - while ( *p != (char) 0 ) { - int i = 0; + buf[0] = c; + buf[1] = 0; + fputs_unfiltered (buf, gdb_stdout); + return c; +} - /* collect non-interesting characters into buf */ - while ( *p != (char) 0 && !SYMBOL_CHAR(*p) && i < (int)sizeof(buf)-SLOP ) { - buf[i++] = *p; - p++; - } - if (i > 0) { - /* output the non-interesting characters without demangling */ - buf[i] = (char) 0; - fputs_filtered(buf, stream); - i = 0; /* reset buf */ - } +int +fputc_unfiltered (c, stream) + int c; + FILE * stream; +{ + char buf[2]; - /* and now the interesting characters */ - while (i < SYMBOL_MAX - && *p != (char) 0 - && SYMBOL_CHAR(*p) - && i < (int)sizeof(buf) - SLOP) { - buf[i++] = *p; - p++; - } - buf[i] = (char) 0; - if (i > 0) { - char * result; - - if ( (result = cplus_demangle(buf, arg_mode)) != NULL ) { - fputs_filtered(result, stream); - free(result); - } - else { - fputs_filtered(buf, stream); - } - } - } + buf[0] = c; + buf[1] = 0; + fputs_unfiltered (buf, stream); + return c; } + /* Print a variable number of ARGS using format FORMAT. If this information is going to put the amount written (since the last call - to INITIALIZE_MORE_FILTER or the last page break) over the page size, - print out a pause message and do a gdb_readline to get the users - permision to continue. + 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 that this routine has a restriction that the length of the - final output line must be less than 255 characters *or* it must be - less than twice the size of the format string. This is a very - arbitrary restriction, but it is an internal restriction, so I'll - put it in. This means that the %s format specifier is almost - useless; unless the caller can GUARANTEE that the string is short - enough, fputs_filtered should be used instead. - 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. */ -#if !defined(MISSING_VPRINTF) || defined (vsprintf) -/* VARARGS */ +static void +vfprintf_maybe_filtered (stream, format, args, filter) + 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) - va_list args; -#else -void fprintf_filtered (stream, format, arg1, arg2, arg3, arg4, arg5, arg6) -#endif FILE *stream; - char *format; + const char *format; + va_list args; { - static char *linebuffer = (char *) 0; - static int line_size; - int format_length; + vfprintf_maybe_filtered (stream, format, args, 1); +} - format_length = strlen (format); +void +vfprintf_unfiltered (stream, format, args) + FILE *stream; + const char *format; + va_list args; +{ + char *linebuffer; + struct cleanup *old_cleanups; - /* Allocated linebuffer for the first time. */ - if (!linebuffer) + vasprintf (&linebuffer, format, args); + if (linebuffer == NULL) { - linebuffer = (char *) xmalloc (255); - line_size = 255; + 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); +} - /* Reallocate buffer to a larger size if this is necessary. */ - if (format_length * 2 > line_size) - { - line_size = format_length * 2; +void +vprintf_filtered (format, args) + const char *format; + va_list args; +{ + vfprintf_maybe_filtered (gdb_stdout, format, args, 1); +} - /* You don't have to copy. */ - free (linebuffer); - linebuffer = (char *) xmalloc (line_size); - } +void +vprintf_unfiltered (format, args) + const char *format; + va_list args; +{ + vfprintf_unfiltered (gdb_stdout, format, args); +} + +/* VARARGS */ +void +#ifdef ANSI_PROTOTYPES +fprintf_filtered (FILE *stream, const char *format, ...) +#else +fprintf_filtered (va_alist) + va_dcl +#endif +{ + va_list args; +#ifdef ANSI_PROTOTYPES + va_start (args, format); +#else + FILE *stream; + char *format; + va_start (args); + stream = va_arg (args, FILE *); + format = va_arg (args, char *); +#endif + vfprintf_filtered (stream, format, args); + va_end (args); +} - /* This won't blow up if the restrictions described above are - followed. */ -#if !defined(MISSING_VPRINTF) || defined (vsprintf) - (void) vsprintf (linebuffer, format, args); +/* VARARGS */ +void +#ifdef ANSI_PROTOTYPES +fprintf_unfiltered (FILE *stream, const char *format, ...) #else - (void) sprintf (linebuffer, format, arg1, arg2, arg3, arg4, arg5, arg6); +fprintf_unfiltered (va_alist) + va_dcl #endif +{ + va_list args; +#ifdef ANSI_PROTOTYPES + va_start (args, format); +#else + FILE *stream; + char *format; - fputs_filtered (linebuffer, stream); + va_start (args); + stream = va_arg (args, FILE *); + format = va_arg (args, char *); +#endif + vfprintf_unfiltered (stream, format, args); + va_end (args); } -#if !defined(MISSING_VPRINTF) || defined (vsprintf) +/* Like fprintf_filtered, but prints its result indented. + Called as fprintfi_filtered (spaces, stream, format, ...); */ + /* VARARGS */ void -fprintf_filtered (va_alist) +#ifdef ANSI_PROTOTYPES +fprintfi_filtered (int spaces, 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; FILE *stream; char *format; va_start (args); + spaces = va_arg (args, int); stream = va_arg (args, FILE *); format = va_arg (args, char *); +#endif + print_spaces_filtered (spaces, stream); - /* This won't blow up if the restrictions described above are - followed. */ - (void) vfprintf_filtered (stream, format, args); + 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 *); - - (void) vfprintf_filtered (stdout, format, args); +#endif + vfprintf_filtered (gdb_stdout, format, args); va_end (args); } -#else + + +/* VARARGS */ void -printf_filtered (format, arg1, arg2, arg3, arg4, arg5, arg6) - char *format; - int arg1, arg2, arg3, arg4, arg5, arg6; +#ifdef ANSI_PROTOTYPES +printf_unfiltered (const char *format, ...) +#else +printf_unfiltered (va_alist) + va_dcl +#endif { - fprintf_filtered (stdout, format, arg1, arg2, arg3, arg4, arg5, arg6); + 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! -/* Easy */ + This routine is *not* a replacement for puts()! puts() appends a newline. + This one doesn't, and had better not! */ void puts_filtered (string) - char *string; + const char *string; { - fputs_filtered (string, stdout); + 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 @@ -1145,7 +1754,7 @@ n_spaces (n) { if (spaces) free (spaces); - spaces = malloc (n+1); + spaces = (char *) xmalloc (n+1); for (t = spaces+n; t != spaces;) *--t = ' '; spaces[n] = '\0'; @@ -1165,26 +1774,91 @@ print_spaces_filtered (n, stream) } /* C++ demangler stuff. */ -char *cplus_demangle (); -/* Print NAME on STREAM, demangling if necessary. */ +/* 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 -fprint_symbol (stream, name) +fprintf_symbol_filtered (stream, name, lang, arg_mode) FILE *stream; char *name; + enum language lang; + int arg_mode; { char *demangled; - if ((!demangle) || NULL == (demangled = cplus_demangle (name, 1))) - fputs_filtered (name, stream); - else + + if (name != NULL) { - fputs_filtered (demangled, stream); - free (demangled); + /* 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_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'); +} + void -_initialize_utils () +initialize_utils () { struct cmd_list_element *c; @@ -1193,7 +1867,7 @@ _initialize_utils () "Set number of characters gdb thinks are in a line.", &setlist); add_show_from_set (c, &showlist); - c->function = set_width_command; + c->function.sfunc = set_width_command; add_show_from_set (add_set_cmd ("height", class_support, @@ -1203,8 +1877,16 @@ _initialize_utils () /* 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"); @@ -1239,9 +1921,16 @@ _initialize_utils () } } } +#endif /* MPW */ + +#if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) + /* If there is a better way to determine the window size, use it. */ + SIGWINCH_HANDLER (); +#endif +#endif /* If the output is not a terminal, don't paginate it. */ - if (!ISATTY (stdout)) + if (!ISATTY (gdb_stdout)) lines_per_page = UINT_MAX; set_width_command ((char *)NULL, 0, c); @@ -1267,3 +1956,392 @@ _initialize_utils () &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 /* 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) + 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) + ++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) + ++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 */ + + 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) + 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) + ++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) + ++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) + { + /* 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; + } + + /* How to tell an infinity from an ordinary number? FIXME-someday */ + +#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; + } +} + +/* temporary storage using circular buffer */ +#define MAXCELLS 16 +#define CELLSIZE 32 +char* +get_cell() +{ + static char buf[MAXCELLS][CELLSIZE]; + static int cell=0; + if (++cell>MAXCELLS) cell=0; + return buf[cell]; +} + +/* print routines to handle variable size regs, etc */ +char* +paddr(addr) + t_addr addr; +{ + char *paddr_str=get_cell(); + switch (sizeof(t_addr)) + { + case 8: + sprintf(paddr_str,"%08x%08x", + (unsigned long)(addr>>32),(unsigned long)(addr&0xffffffff)); + break; + case 4: + sprintf(paddr_str,"%08x",(unsigned long)addr); + break; + case 2: + sprintf(paddr_str,"%04x",(unsigned short)(addr&0xffff)); + break; + default: + sprintf(paddr_str,"%x",addr); + } + return paddr_str; +} + +char* +preg(reg) + t_reg reg; +{ + char *preg_str=get_cell(); + switch (sizeof(t_reg)) + { + case 8: + sprintf(preg_str,"%08x%08x", + (unsigned long)(reg>>32),(unsigned long)(reg&0xffffffff)); + break; + case 4: + sprintf(preg_str,"%08x",(unsigned long)reg); + break; + case 2: + sprintf(preg_str,"%04x",(unsigned short)(reg&0xffff)); + break; + default: + sprintf(preg_str,"%x",reg); + } + return preg_str; +} +