From 18bc92cb83fdf0f0472432fb7c30914a9cd4df01 Mon Sep 17 00:00:00 2001 From: midipix Date: Sun, 15 Mar 2015 21:08:54 -0400 Subject: libiberty: remove source files that either duplicate functionality already present in all modern libc implementations, or are incompatible with modern development environments, or both. --- libiberty/strsignal.c | 610 -------------------------------------------------- 1 file changed, 610 deletions(-) delete mode 100644 libiberty/strsignal.c (limited to 'libiberty/strsignal.c') diff --git a/libiberty/strsignal.c b/libiberty/strsignal.c deleted file mode 100644 index 666b1b4f1..000000000 --- a/libiberty/strsignal.c +++ /dev/null @@ -1,610 +0,0 @@ -/* Extended support for using signal values. - Written by Fred Fish. fnf@cygnus.com - This file is in the public domain. */ - -#include "config.h" -#include "ansidecl.h" -#include "libiberty.h" - -/* We need to declare sys_siglist, because even if the system provides - it we can't assume that it is declared in (for example, - SunOS provides sys_siglist, but it does not declare it in any - header file). However, we can't declare sys_siglist portably, - because on some systems it is declared with const and on some - systems it is declared without const. If we were using autoconf, - we could work out the right declaration. Until, then we just - ignore any declaration in the system header files, and always - declare it ourselves. With luck, this will always work. */ -#define sys_siglist no_such_symbol -#define sys_nsig sys_nsig__no_such_symbol - -#include -#include - -/* Routines imported from standard C runtime libraries. */ - -#ifdef HAVE_STDLIB_H -#include -#else -extern PTR malloc (); -#endif - -#ifdef HAVE_STRING_H -#include -#else -extern PTR memset (); -#endif - -/* Undefine the macro we used to hide the definition of sys_siglist - found in the system header files. */ -#undef sys_siglist -#undef sys_nsig - -#ifndef NULL -# define NULL (void *) 0 -#endif - -#ifndef MAX -# define MAX(a,b) ((a) > (b) ? (a) : (b)) -#endif - -static void init_signal_tables (void); - -/* Translation table for signal values. - - Note that this table is generally only accessed when it is used at runtime - to initialize signal name and message tables that are indexed by signal - value. - - Not all of these signals will exist on all systems. This table is the only - thing that should have to be updated as new signal numbers are introduced. - It's sort of ugly, but at least its portable. */ - -struct signal_info -{ - const int value; /* The numeric value from */ - const char *const name; /* The equivalent symbolic value */ -#ifndef HAVE_SYS_SIGLIST - const char *const msg; /* Short message about this value */ -#endif -}; - -#ifndef HAVE_SYS_SIGLIST -# define ENTRY(value, name, msg) {value, name, msg} -#else -# define ENTRY(value, name, msg) {value, name} -#endif - -static const struct signal_info signal_table[] = -{ -#if defined (SIGHUP) - ENTRY(SIGHUP, "SIGHUP", "Hangup"), -#endif -#if defined (SIGINT) - ENTRY(SIGINT, "SIGINT", "Interrupt"), -#endif -#if defined (SIGQUIT) - ENTRY(SIGQUIT, "SIGQUIT", "Quit"), -#endif -#if defined (SIGILL) - ENTRY(SIGILL, "SIGILL", "Illegal instruction"), -#endif -#if defined (SIGTRAP) - ENTRY(SIGTRAP, "SIGTRAP", "Trace/breakpoint trap"), -#endif -/* Put SIGIOT before SIGABRT, so that if SIGIOT==SIGABRT then SIGABRT - overrides SIGIOT. SIGABRT is in ANSI and POSIX.1, and SIGIOT isn't. */ -#if defined (SIGIOT) - ENTRY(SIGIOT, "SIGIOT", "IOT trap"), -#endif -#if defined (SIGABRT) - ENTRY(SIGABRT, "SIGABRT", "Aborted"), -#endif -#if defined (SIGEMT) - ENTRY(SIGEMT, "SIGEMT", "Emulation trap"), -#endif -#if defined (SIGFPE) - ENTRY(SIGFPE, "SIGFPE", "Arithmetic exception"), -#endif -#if defined (SIGKILL) - ENTRY(SIGKILL, "SIGKILL", "Killed"), -#endif -#if defined (SIGBUS) - ENTRY(SIGBUS, "SIGBUS", "Bus error"), -#endif -#if defined (SIGSEGV) - ENTRY(SIGSEGV, "SIGSEGV", "Segmentation fault"), -#endif -#if defined (SIGSYS) - ENTRY(SIGSYS, "SIGSYS", "Bad system call"), -#endif -#if defined (SIGPIPE) - ENTRY(SIGPIPE, "SIGPIPE", "Broken pipe"), -#endif -#if defined (SIGALRM) - ENTRY(SIGALRM, "SIGALRM", "Alarm clock"), -#endif -#if defined (SIGTERM) - ENTRY(SIGTERM, "SIGTERM", "Terminated"), -#endif -#if defined (SIGUSR1) - ENTRY(SIGUSR1, "SIGUSR1", "User defined signal 1"), -#endif -#if defined (SIGUSR2) - ENTRY(SIGUSR2, "SIGUSR2", "User defined signal 2"), -#endif -/* Put SIGCLD before SIGCHLD, so that if SIGCLD==SIGCHLD then SIGCHLD - overrides SIGCLD. SIGCHLD is in POXIX.1 */ -#if defined (SIGCLD) - ENTRY(SIGCLD, "SIGCLD", "Child status changed"), -#endif -#if defined (SIGCHLD) - ENTRY(SIGCHLD, "SIGCHLD", "Child status changed"), -#endif -#if defined (SIGPWR) - ENTRY(SIGPWR, "SIGPWR", "Power fail/restart"), -#endif -#if defined (SIGWINCH) - ENTRY(SIGWINCH, "SIGWINCH", "Window size changed"), -#endif -#if defined (SIGURG) - ENTRY(SIGURG, "SIGURG", "Urgent I/O condition"), -#endif -#if defined (SIGIO) - /* "I/O pending" has also been suggested, but is misleading since the - signal only happens when the process has asked for it, not everytime - I/O is pending. */ - ENTRY(SIGIO, "SIGIO", "I/O possible"), -#endif -#if defined (SIGPOLL) - ENTRY(SIGPOLL, "SIGPOLL", "Pollable event occurred"), -#endif -#if defined (SIGSTOP) - ENTRY(SIGSTOP, "SIGSTOP", "Stopped (signal)"), -#endif -#if defined (SIGTSTP) - ENTRY(SIGTSTP, "SIGTSTP", "Stopped (user)"), -#endif -#if defined (SIGCONT) - ENTRY(SIGCONT, "SIGCONT", "Continued"), -#endif -#if defined (SIGTTIN) - ENTRY(SIGTTIN, "SIGTTIN", "Stopped (tty input)"), -#endif -#if defined (SIGTTOU) - ENTRY(SIGTTOU, "SIGTTOU", "Stopped (tty output)"), -#endif -#if defined (SIGVTALRM) - ENTRY(SIGVTALRM, "SIGVTALRM", "Virtual timer expired"), -#endif -#if defined (SIGPROF) - ENTRY(SIGPROF, "SIGPROF", "Profiling timer expired"), -#endif -#if defined (SIGXCPU) - ENTRY(SIGXCPU, "SIGXCPU", "CPU time limit exceeded"), -#endif -#if defined (SIGXFSZ) - ENTRY(SIGXFSZ, "SIGXFSZ", "File size limit exceeded"), -#endif -#if defined (SIGWIND) - ENTRY(SIGWIND, "SIGWIND", "SIGWIND"), -#endif -#if defined (SIGPHONE) - ENTRY(SIGPHONE, "SIGPHONE", "SIGPHONE"), -#endif -#if defined (SIGLOST) - ENTRY(SIGLOST, "SIGLOST", "Resource lost"), -#endif -#if defined (SIGWAITING) - ENTRY(SIGWAITING, "SIGWAITING", "Process's LWPs are blocked"), -#endif -#if defined (SIGLWP) - ENTRY(SIGLWP, "SIGLWP", "Signal LWP"), -#endif -#if defined (SIGDANGER) - ENTRY(SIGDANGER, "SIGDANGER", "Swap space dangerously low"), -#endif -#if defined (SIGGRANT) - ENTRY(SIGGRANT, "SIGGRANT", "Monitor mode granted"), -#endif -#if defined (SIGRETRACT) - ENTRY(SIGRETRACT, "SIGRETRACT", "Need to relinguish monitor mode"), -#endif -#if defined (SIGMSG) - ENTRY(SIGMSG, "SIGMSG", "Monitor mode data available"), -#endif -#if defined (SIGSOUND) - ENTRY(SIGSOUND, "SIGSOUND", "Sound completed"), -#endif -#if defined (SIGSAK) - ENTRY(SIGSAK, "SIGSAK", "Secure attention"), -#endif - ENTRY(0, NULL, NULL) -}; - -/* Translation table allocated and initialized at runtime. Indexed by the - signal value to find the equivalent symbolic value. */ - -static const char **signal_names; -static int num_signal_names = 0; - -/* Translation table allocated and initialized at runtime, if it does not - already exist in the host environment. Indexed by the signal value to find - the descriptive string. - - We don't export it for use in other modules because even though it has the - same name, it differs from other implementations in that it is dynamically - initialized rather than statically initialized. */ - -#ifndef HAVE_SYS_SIGLIST - -static int sys_nsig; -static const char **sys_siglist; - -#else - -#ifdef NSIG -static int sys_nsig = NSIG; -#else -#ifdef _NSIG -static int sys_nsig = _NSIG; -#endif -#endif -extern const char * const sys_siglist[]; - -#endif - - -/* - -NAME - - init_signal_tables -- initialize the name and message tables - -SYNOPSIS - - static void init_signal_tables (); - -DESCRIPTION - - Using the signal_table, which is initialized at compile time, generate - the signal_names and the sys_siglist (if needed) tables, which are - indexed at runtime by a specific signal value. - -BUGS - - The initialization of the tables may fail under low memory conditions, - in which case we don't do anything particularly useful, but we don't - bomb either. Who knows, it might succeed at a later point if we free - some memory in the meantime. In any case, the other routines know - how to deal with lack of a table after trying to initialize it. This - may or may not be considered to be a bug, that we don't specifically - warn about this particular failure mode. - -*/ - -static void -init_signal_tables (void) -{ - const struct signal_info *eip; - int nbytes; - - /* If we haven't already scanned the signal_table once to find the maximum - signal value, then go find it now. */ - - if (num_signal_names == 0) - { - for (eip = signal_table; eip -> name != NULL; eip++) - { - if (eip -> value >= num_signal_names) - { - num_signal_names = eip -> value + 1; - } - } - } - - /* Now attempt to allocate the signal_names table, zero it out, and then - initialize it from the statically initialized signal_table. */ - - if (signal_names == NULL) - { - nbytes = num_signal_names * sizeof (char *); - if ((signal_names = (const char **) malloc (nbytes)) != NULL) - { - memset (signal_names, 0, nbytes); - for (eip = signal_table; eip -> name != NULL; eip++) - { - signal_names[eip -> value] = eip -> name; - } - } - } - -#ifndef HAVE_SYS_SIGLIST - - /* Now attempt to allocate the sys_siglist table, zero it out, and then - initialize it from the statically initialized signal_table. */ - - if (sys_siglist == NULL) - { - nbytes = num_signal_names * sizeof (char *); - if ((sys_siglist = (const char **) malloc (nbytes)) != NULL) - { - memset (sys_siglist, 0, nbytes); - sys_nsig = num_signal_names; - for (eip = signal_table; eip -> name != NULL; eip++) - { - sys_siglist[eip -> value] = eip -> msg; - } - } - } - -#endif - -} - - -/* - -@deftypefn Extension int signo_max (void) - -Returns the maximum signal value for which a corresponding symbolic -name or message is available. Note that in the case where we use the -@code{sys_siglist} supplied by the system, it is possible for there to -be more symbolic names than messages, or vice versa. In fact, the -manual page for @code{psignal(3b)} explicitly warns that one should -check the size of the table (@code{NSIG}) before indexing it, since -new signal codes may be added to the system before they are added to -the table. Thus @code{NSIG} might be smaller than value implied by -the largest signo value defined in @code{}. - -We return the maximum value that can be used to obtain a meaningful -symbolic name or message. - -@end deftypefn - -*/ - -int -signo_max (void) -{ - int maxsize; - - if (signal_names == NULL) - { - init_signal_tables (); - } - maxsize = MAX (sys_nsig, num_signal_names); - return (maxsize - 1); -} - - -/* - -@deftypefn Supplemental {const char *} strsignal (int @var{signo}) - -Maps an signal number to an signal message string, the contents of -which are implementation defined. On systems which have the external -variable @code{sys_siglist}, these strings will be the same as the -ones used by @code{psignal()}. - -If the supplied signal number is within the valid range of indices for -the @code{sys_siglist}, but no message is available for the particular -signal number, then returns the string @samp{Signal @var{num}}, where -@var{num} is the signal number. - -If the supplied signal number is not a valid index into -@code{sys_siglist}, returns @code{NULL}. - -The returned string is only guaranteed to be valid only until the next -call to @code{strsignal}. - -@end deftypefn - -*/ - -#ifndef HAVE_STRSIGNAL - -char * -strsignal (int signo) -{ - char *msg; - static char buf[32]; - -#ifndef HAVE_SYS_SIGLIST - - if (signal_names == NULL) - { - init_signal_tables (); - } - -#endif - - if ((signo < 0) || (signo >= sys_nsig)) - { - /* Out of range, just return NULL */ - msg = NULL; - } - else if ((sys_siglist == NULL) || (sys_siglist[signo] == NULL)) - { - /* In range, but no sys_siglist or no entry at this index. */ - sprintf (buf, "Signal %d", signo); - msg = buf; - } - else - { - /* In range, and a valid message. Just return the message. We - can safely cast away const, since POSIX says the user must - not modify the result. */ - msg = (char *) sys_siglist[signo]; - } - - return (msg); -} - -#endif /* ! HAVE_STRSIGNAL */ - -/* - -@deftypefn Extension {const char*} strsigno (int @var{signo}) - -Given an signal number, returns a pointer to a string containing the -symbolic name of that signal number, as found in @code{}. - -If the supplied signal number is within the valid range of indices for -symbolic names, but no name is available for the particular signal -number, then returns the string @samp{Signal @var{num}}, where -@var{num} is the signal number. - -If the supplied signal number is not within the range of valid -indices, then returns @code{NULL}. - -The contents of the location pointed to are only guaranteed to be -valid until the next call to @code{strsigno}. - -@end deftypefn - -*/ - -const char * -strsigno (int signo) -{ - const char *name; - static char buf[32]; - - if (signal_names == NULL) - { - init_signal_tables (); - } - - if ((signo < 0) || (signo >= num_signal_names)) - { - /* Out of range, just return NULL */ - name = NULL; - } - else if ((signal_names == NULL) || (signal_names[signo] == NULL)) - { - /* In range, but no signal_names or no entry at this index. */ - sprintf (buf, "Signal %d", signo); - name = (const char *) buf; - } - else - { - /* In range, and a valid name. Just return the name. */ - name = signal_names[signo]; - } - - return (name); -} - - -/* - -@deftypefn Extension int strtosigno (const char *@var{name}) - -Given the symbolic name of a signal, map it to a signal number. If no -translation is found, returns 0. - -@end deftypefn - -*/ - -int -strtosigno (const char *name) -{ - int signo = 0; - - if (name != NULL) - { - if (signal_names == NULL) - { - init_signal_tables (); - } - for (signo = 0; signo < num_signal_names; signo++) - { - if ((signal_names[signo] != NULL) && - (strcmp (name, signal_names[signo]) == 0)) - { - break; - } - } - if (signo == num_signal_names) - { - signo = 0; - } - } - return (signo); -} - - -/* - -@deftypefn Supplemental void psignal (int @var{signo}, char *@var{message}) - -Print @var{message} to the standard error, followed by a colon, -followed by the description of the signal specified by @var{signo}, -followed by a newline. - -@end deftypefn - -*/ - -#ifndef HAVE_PSIGNAL - -void -psignal (int signo, char *message) -{ - if (signal_names == NULL) - { - init_signal_tables (); - } - if ((signo <= 0) || (signo >= sys_nsig)) - { - fprintf (stderr, "%s: unknown signal\n", message); - } - else - { - fprintf (stderr, "%s: %s\n", message, sys_siglist[signo]); - } -} - -#endif /* ! HAVE_PSIGNAL */ - - -/* A simple little main that does nothing but print all the signal translations - if MAIN is defined and this file is compiled and linked. */ - -#ifdef MAIN - -#include - -int -main (void) -{ - int signo; - int maxsigno; - const char *name; - const char *msg; - - maxsigno = signo_max (); - printf ("%d entries in names table.\n", num_signal_names); - printf ("%d entries in messages table.\n", sys_nsig); - printf ("%d is max useful index.\n", maxsigno); - - /* Keep printing values until we get to the end of *both* tables, not - *either* table. Note that knowing the maximum useful index does *not* - relieve us of the responsibility of testing the return pointer for - NULL. */ - - for (signo = 0; signo <= maxsigno; signo++) - { - name = strsigno (signo); - name = (name == NULL) ? "" : name; - msg = strsignal (signo); - msg = (msg == NULL) ? "" : msg; - printf ("%-4d%-18s%s\n", signo, name, msg); - } - - return 0; -} - -#endif -- cgit v1.2.3