Date: Thu, 13 Oct 2005 10:31:50 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-arch@freebsd.org Cc: David Xu <bsddiy@126.com> Subject: Re: POSIX siginfo Message-ID: <200510131031.53753.jhb@freebsd.org> In-Reply-To: <434DD327.7090200@126.com> References: <434DD327.7090200@126.com>
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On Wednesday 12 October 2005 11:23 pm, David Xu wrote: > I am trying to implement POSIX sigqueue, while staring some code > in machdep.c and trap.c, I found our si_code for siginfo structure > is not in POSIX standard, all are machine dependent magical values > pushed by CPU. POSIX lists all these standard codes: > > http://www.opengroup.org/onlinepubs/009695399/basedefs/signal.h.html > > /* codes for SIGILL */ > ILL_ILLOPC > ILL_ILLOPN > ILL_ILLADR > ILL_ILLTRP > ILL_PRVOPC > ILL_PRVREG > ILL_COPROC > ILL_BADSTK > > /* codes for SIGBUS */ > BUS_ADRALN > BUS_ADRERR > BUS_OBJERR > BUS_RESERVED > > /* codes for SIGSEGV */ > SEGV_MAPERR > SEGV_ACCERR > > /* codes for SIGFPE */ > FPE_INTOVF 1 > FPE_INTDIV 2 > FPE_FLTDIV 3 > FPE_FLTOVF 4 > FPE_FLTUND 5 > FPE_FLTRES 6 > FPE_FLTINV 7 > FPE_FLTSUB 8 > > /* codes for SIGTRAP */ > TRAP_BRKPT > TRAP_TRACE > > ... > > Note that, NetBSD and Linux had already used the POSIX codes, should we > use them too? Hmm, looks like we do use these values in some cases on i386 at least for SIGFPE and possibly SIGBUS. I think you should fix all the archs to use these codes. I would even go ahead and commit that on its own before the POSIX sigqueue stuff. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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