Justin C. Miller
95a35cd0bf
Moving libc from its separate repo into this one, minor resulting build fixes, and a hacky way to add -I for libc headers in builds.
59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/* signal( int, void (*)( int ) )
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This file is part of the Public Domain C Library (PDCLib).
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Permission is granted to use, modify, and / or redistribute at will.
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*/
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#include <signal.h>
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#include <stdlib.h>
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void (*_PDCLIB_sigabrt)( int ) = SIG_DFL;
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void (*_PDCLIB_sigfpe)( int ) = SIG_DFL;
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void (*_PDCLIB_sigill)( int ) = SIG_DFL;
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void (*_PDCLIB_sigint)( int ) = SIG_DFL;
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void (*_PDCLIB_sigsegv)( int ) = SIG_DFL;
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void (*_PDCLIB_sigterm)( int ) = SIG_DFL;
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void (*signal( int sig, void (*func)( int ) ) )( int )
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{
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void (*oldhandler)( int );
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if ( sig <= 0 || func == SIG_ERR )
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{
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return SIG_ERR;
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}
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switch ( sig )
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{
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case SIGABRT:
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oldhandler = _PDCLIB_sigabrt;
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_PDCLIB_sigabrt = func;
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break;
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case SIGFPE:
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oldhandler = _PDCLIB_sigfpe;
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_PDCLIB_sigfpe = func;
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break;
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case SIGILL:
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oldhandler = _PDCLIB_sigill;
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_PDCLIB_sigill = func;
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break;
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case SIGINT:
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oldhandler = _PDCLIB_sigint;
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_PDCLIB_sigint = func;
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break;
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case SIGSEGV:
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oldhandler = _PDCLIB_sigsegv;
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_PDCLIB_sigsegv = func;
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break;
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case SIGTERM:
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oldhandler = _PDCLIB_sigterm;
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_PDCLIB_sigterm = func;
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break;
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default:
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/* The standard calls for an unspecified "positive value". You
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will probably want to define a specific value for this.
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*/
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_PDCLIB_errno = 1;
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return SIG_ERR;
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}
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return oldhandler;
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}
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