From 91078fca0cb2bb1d02316eeb7d2dd5ab422f00e4 Mon Sep 17 00:00:00 2001 From: Marcel Moolenaar Date: Wed, 29 Sep 1999 15:06:27 +0000 Subject: sigset_t change (part 3 of 5) ----------------------------- By introducing a new sigframe so that the signal handler operates on the new siginfo_t and on ucontext_t instead of sigcontext, we now need two version of sendsig and sigreturn. A flag in struct proc determines whether the process expects an old sigframe or a new sigframe. The signal trampoline handles which sigreturn to call. It does this by testing for a magic cookie in the frame. The alpha uses osigreturn to implement longjmp. This means that osigreturn is not only used for compatibility with existing binaries. To handle the new sigset_t, setjmp saves it in sc_reserved (see NOTE). the struct sigframe has been moved from frame.h to sigframe.h to handle the complex header dependencies that was caused by the new sigframe. NOTE: For the i386, the size of jmp_buf has been increased to hold the new sigset_t. On the alpha this has been prevented by using sc_reserved in sigcontext. --- sys/powerpc/include/sigframe.h | 45 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 sys/powerpc/include/sigframe.h (limited to 'sys/powerpc/include') diff --git a/sys/powerpc/include/sigframe.h b/sys/powerpc/include/sigframe.h new file mode 100644 index 000000000000..bc445a938a64 --- /dev/null +++ b/sys/powerpc/include/sigframe.h @@ -0,0 +1,45 @@ +/*- + * Copyright (c) 1999 Marcel Moolenaar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer + * in this position and unchanged. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _MACHINE_SIGFRAME_H_ +#define _MACHINE_SIGFRAME_H_ 1 + +struct osigframe { + struct osigcontext sf_sc; + osiginfo_t sf_si; +}; + +struct sigframe { + unsigned long __spare__; + ucontext_t sf_uc; + siginfo_t sf_si; +}; + +#endif /* _MACHINE_SIGFRAME_H_ */ -- cgit v1.3