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cd7fe7a329
This version of signal (which does not rely on a notion of userland processes and is thus excluded from Vhex) follows C99 semantics but does not generate any signals by default. Basically, the signal function sets up function pointers and the signal function calls them. Termination signals call exit() while other signals call _Exit(), which is a quicker program termination similar to abort(). C99 allows programs to long jump out of signal handlers (!) which is unbelievably scary because it would bypass stack switching code in Vhex as well as normal interrupt handler termination in gint.
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
#ifndef __BITS_SIGNUM_H__
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# define __BITS_SIGNUM_H__
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// Define the number of signals
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#define _NSIG 32
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// Vhex kernel internal define used to indicate
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// if the signal is implemented or not
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#define __SIGUNDEF ((__sighandler_t) -2) /* Not implemented */
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/* Fake signal functions. */
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#define SIG_ERR ((__sighandler_t) -1) /* Error return. */
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#define SIG_DFL ((__sighandler_t) 0) /* Default action. */
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#define SIG_IGN ((__sighandler_t) 1) /* Ignore signal. */
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/* ISO C99 signals. */
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#define SIGINT 2 /* Interactive attention signal. */
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#define SIGILL 4 /* Illegal instruction. */
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#define SIGABRT 6 /* Abnormal termination. */
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#define SIGFPE 8 /* Erroneous arithmetic operation. */
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#define SIGSEGV 11 /* Invalid access to storage. */
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#define SIGTERM 15 /* Termination request. */
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/* Historical signals specified by POSIX. */
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#define SIGHUP 1 /* Hangup. */
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#define SIGQUIT 3 /* Quit. */
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#define SIGTRAP 5 /* Trace/breakpoint trap. */
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#define SIGKILL 9 /* Killed. */
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#define SIGBUS 10 /* Bus error. */
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#define SIGSYS 12 /* Bad system call. */
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#define SIGPIPE 13 /* Broken pipe. */
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#define SIGALRM 14 /* Alarm clock. */
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/* New(er) POSIX signals (1003.1-2008, 1003.1-2013). */
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#define SIGURG 16 /* Urgent data is available at a socket. */
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#define SIGSTOP 17 /* Stop, unblockable. */
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#define SIGTSTP 18 /* Keyboard stop. */
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#define SIGCONT 19 /* Continue. */
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#define SIGCHLD 20 /* Child terminated or stopped. */
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#define SIGTTIN 21 /* Background read from control terminal. */
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#define SIGTTOU 22 /* Background write to control terminal. */
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#define SIGPOLL 23 /* Pollable event occurred (System V). */
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#define SIGXCPU 24 /* CPU time limit exceeded. */
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#define SIGXFSZ 25 /* File size limit exceeded. */
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#define SIGVTALRM 26 /* Virtual timer expired. */
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#define SIGPROF 27 /* Profiling timer expired. */
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#define SIGUSR1 30 /* User-defined signal 1. */
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#define SIGUSR2 31 /* User-defined signal 2. */
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#endif /*__BITS_SIGNUM_H__*/
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